double toggle jaw crusher vs single toggle crusher

single toggle vs double toggle jaw crusher - jxsc machine

Crusher machines play an important role in the mines, metallurgy, building materials, quarrying, recycling, chemical and so on industries. According to the difference of structure and working principle, the rock crushers are mainly divided into jaw crusher, cone crusher, roller crusher, impact crusher, etc. The jaw crusher usually the primary crusher for in the crushing plant, to reduce the large ore lump to smaller particles for the next stages of fine crushing, grinding. The model selection of crusher is determined by the opening gap, moisture, capacity, and other factors. How to choose a jaw crusher? Get professional help from JXSC engineers. Types of jaw crusher

The main parts of the swing jaw crusher are stationary jaw die, movable jaw die, impellor, eccentric shaft, toggle plate. Single toggle jaw crusher with simple structure, high crushing ratio, is suited for crushing large hard rock. Besides, swing movement wont cause much abrasion on the movable die, thereby easy to maintain. But it is affected by tiny spaces and transport conditions especially in the remote area because of its large volume and heavyweight. There is a trend that a double toggle jaw rock crusher is gradually replacing the single toggle one.

The double toggle jaw crusher has two forms of working direction: one is a swing motion toward the fixed die plate, and the other is a vertical motion because of the rotation of the eccentric shaft. Through adjusting the movable die suspension and support mode, the processing capability, power consumption, liner wear, and moving stroke can be optimized. Double toggle crusher is smaller than a single toggle crusher, is widely used at home and abroad for its lesser price, simple structure and reliable operation.

This type is design firstly by experts of Germany, it also has two types as single toggle double cavity jaw crusher and double toggle double cavity jaw crusher. The eccentric shaft deployed in the lower part of the crusher and the movable part divides into two working surface, which is respectively composed of two independent crushing cavities with the fixed jaw die. With the rotation of the eccentric shaft, the left and right crushing cavity alternatively to do crushing work, that is, crushing and discharging processes are dont affected by the swing jaw. You may be interested in jaw crusher VS gyratory crusher, and the operation tips for jaw crusher.

single toggle jaw crusher with unique benefits | hxjq

There are two kinds of jaw crushers, double toggle jaw crusher and single toggle jaw crusher. In the work of the former jaw crusher, the swing jaw only moveslikea simple arc, so it is also known as simple pendulum jaw crusher, the swing jaw of the latter one moves in an arc at the same time also moves up and down, so it is also known as complex pendulum jaw crusher.

Single toggle jaw crusher is widely used in many industries nowadays and fully replace the double one in actual use because of its advantages of simple structure and easy operation. It deals with all kinds of hard and soft ores and rocks by the extrusion and bending of the two jaw plates: the swing jaw and the fixed jaw. The ores after being crushed can be applied in mining, construction, hydraulic project, chemical industry, etc.

Double toggle jaw crusher is designed for the hardest stones and rocks, tough and abrasive materials, and ferrous metals. But the single one can crush less hard and medium-hardness ores, and deals with a variety of stones and rocks with compressive strength within 320 MPa.

The former crusher can process 5-500 tonsof materials per hour so it can't satisfy larger capacity requirements. While the latter one is suitable for processing 1-2000 tons per hour. Customers can adjust the range of capacity.

The feeding size of the former crusher is about 1,250 mm, and the maximal output size is 20 mm that is decided by the feeding material size. The latter crusher processes larger feeding materials with the maximal size of 1,600 mm. And the adjustment range of the discharging size is also wide from 10 mm to 350 mm.

The working principle ofsingle toggle jaw crusheris that the generator drives the eccentric shaft to rotate through the belt and pulley, and the swing jaw plate reciprocates periodically around the eccentric shaft to the fixed jaw plate, sometimes it is close to the fixed jaw and sometimes it leaves.

When the swing jaw plate is close to the fixed jaw plate, the ores between the two jaw plates are crushed, bent and split. And when the swing jaw plate leaves the fixed one, the crushed ore is discharged through the discharging opening under the action of gravity. Because of the complex trajectory of each point on the swing jaw, it is also called as the complex pendulum jaw crusher.

It works in much the same way as the double one, except that the movements of the swing jaw are different. The double toggle crusher crushes stones by compressing the feeding material between two huge jaw plates. Each point on the swing jaw is an arc line with the suspension axis as the center. Due to its simple movement track, it is called simple pendulum jaw crusher.

Its frame is cast in sections and then bolted together. The casting process is complex. It is mainly used to support the eccentric shaft and bear the impact force of materials, so it requires to be strong enough. The rack of the double one can be welded by a40-50 mm-thick steel plate, but the quality is not as good as cast steel.

The plates comprise a swing jaw plate and a fixed jaw plate. They are fixed on the surface of the jaw bed with wedge-shaped iron block and bolt to protect the jaw bed from abrasion. Usually they are manufactured with high strength and wear-resistant materials, like cast manganese steel jaw, themanganese content in cast steel is 12% - 14%. If the conditions are limited, cast iron can be used instead, but the jaw plate is easy to wear and break, thus the service life is short.

The single toggle type is stronger than the double one, but because of the characteristics of the movement track of the jaw plate, its bottom part is worn out faster than the top, so it is often made into a symmetrical shape, so that the jaw can be installed upside-down after wear, extending the service life.

The crusher with single toggle is a precisely calculated cast iron piece used to adjust the size of the discharge opening and to compensate for wear parts of the jaw plate, toggle plate and toggle plate cushion. The integral toggle plate is used because of its smaller weight and size.

The flywheel is usually made of cast iron or cast steel. It is used to store the energy of swing jaw, and then used for anindustrial formation to make the machine work more uniformly. The smaller crushers are always equipped with anintegral flywheel.

The regulating device adopts wedge type, which is composed of a front and a rear wedge blocks. The front wedge block can move back and forth to support the rear plate. The rear wedge is adjustable, which can move up and down. It moves up and down by the screw and the size of the discharging opening is adjusted. The inclined plane of the two wedge pieces is inverted to fit.

The crusher is light and simple in structure, so it is easy to install and be used in mobile equipment (compared with the double toggle crusher, it is short of some parts, including one connecting rod, one bracket, one spindle and a pair of bearings).

The up and down movement of the swing jaw can promote the discharge of materials, and the horizontal distance of its upper part is farther than that of its lower part, which is easy to crush large pieces of materials, so its crushing efficiency is higher than the double one with the same specification (20-30%), and the crushing ratio is larger (it is general 6-8).

This crusher is smaller in size. It is easy for operators to check and change the parts. General workers can deal with its maintenance. It is almost impossible to get clogging compared with the double toggle crusher.

Generally speaking, the vertical movement track of the crusher is large, and the grinding effect of stone on the jaw plate is severe. We adopt high manganese steel cast to manufacture the plates to strengthen its wear resistance.

In recent years, double toggle jaw crusher has been forgotten by customers all over the world. The majority of the manufacturers do not choose this crusher anymore. But fewer customers seems to choose it because of their lower budget. At the beginning of last year, Mr. Ramli from Indonesia consulted our company on the Internet, he wanted to process coal gangue with a crusher.

As we all know, coal gangue is a kind of black and gray rock with lower carbon content and harder than coal, associated with the coal seam in the process of the coal formation. The application range is very extensive, and the utilization rate is high. Its value will increase especially after processing by mining equipment. But it will produce a lot of dust when piled up in the open air.

He said that he was looking for a cheaper crusher that can produce less pollution. He checked the Internet before, and found that double toggle type crusher produced less dust, so he wanted to buy it.

However, we learned that the customer wanted to process 500 tons gangue per hour. After the customer service staff introduced the double toggle crusher to the customer online, they suggested him to use the single one. The technical manager made a phone call to him to explain the differences between these two type crushers in detail. Mr. Ramli said that he had checked the data, single toggle crusher could produce much dust with a higher cost, so it could not be used in his project.

We sent a detailed equipment diagram to the customer, telling him that the single one with a large crushing ratio and capacity is lighter and easier to install. Most importantly, we have redesigned and manufactured the single toggle crusher with new technology, and has been selected by many users.

Mr. Ramli still could not decide which crusher to choose. Therefore, we found a production site nearest to him. After the site investigation, he was satisfied with the single toggle crusher with large production capacity and less pollution, and finally, he decided to buy this crusher to process gangue.

We also sent technical engineers to his production site to help him install and operate. After learning, the workers of his company all said that single toggle jaw crusher was easy to operate. The customer was very satisfied with the on-site work of it.

Single toggle crusher and the double one have their own advantages and disadvantages in practical application. The latter one is cheaper, but it has gradually been withdrawn from the market due to its heavy weight, complicated structure and difficult maintenance. The former one is in great demand in the world now and is selected by many mining and quarrying factories.

And in recent years, with the expansion of the demand for environment-friendly equipment, crusher manufacturers are investing more innovative talents and high-tech to constantly transform and evolve single toggle crusher, striving to reduce energy consumption and pollution. Crusher users also pay more attention to the daily maintenance of equipment, they learn the maintenance methods for prolonging the service life to reduce the losses.

jaw stone crusher | single toggle vs double toggle - jxsc mine

Jaw stone crusher is heavy duty machines and hence need to be robustly constructed. The movable jaw and static jaw are made up of the crushing chamber. It stimulates the movement of the two jaws of the Animal and completes working. Widely used in mining smelting, building materials, roads, railways, water conservancy, and chemical industries in a variety of ore and large pieces of material crushing. The classification of Jaw crusher: single toggle jaw crusher, double toggle jaw crusher, hydraulic jaw crusher, impact jaw rock crusher, mobile jaw stonecrusher, etc. Which jaw crusher better single toggle or double toggle.

The movable jaw is suspended from the mandrel and swings from side to side. When the eccentric axis rotates, the connecting rod moves up and down. And drives the two thrust plates to move back and forth as well. Thus pushing the jaw to move left and right to move back and forth, realizing crushing and discharging.

This kind of crusher adopts a crank two-bar linkage mechanism. Although the moving jaw is subjected to a great crushing reaction. Its eccentric shaft and connecting rod are subjected to a little force. So it is often made into large and medium-sized machines for crushing hard materials in the industry. In addition, when the crushers work, the movement track of each point on the moving jaw is a circular arc with the center of the center axis.

The radius of the circular arc is equal to the distance from the point to the axis. The upper arc is small, the lower arc is large, and the crushing efficiency is low. The fragmentation ratio is generally 3-6. Because the movement track is simply so-called a single toggle jaw crusher. The structure of the single toggle jaw crusher is compact and simple, and the force of transmission parts such as eccentric shaft is small. The vertical displacement of the movable jaw is small, the material is less excessively broken and the wear of movable jaw plate is small.

The upper end of the movable jaw is directly suspended on the eccentric shaft. As the connecting rod of the crank connecting Rod mechanism, the lower end of the movable jaw is supported on the back wall of the frame by the thrust plate. When the eccentric axis rotates, the track of each point on the movable jaw is from the circumference line of the suspension point (the radius is equal to the eccentric distance), and gradually becomes an ellipse. The movement track of each point on moving jaw is more complex in this kind of machine, so it is called a double toggle jaw crusher.

Compared with the single toggle jaw stone crusher, the double-toggle jaw crusher has the following advantages: less weight, fewer components, more compact structure, a better filling degree in the crushing chamber, even crushing of the loaded material block, and forced unloading of the finished product by moving the lower jaw. Therefore, productivity is higher, 20-30% higher than that of the single-toggle of the same specification. And the material block has a bigger up-down rolling motion in the lower part of the moving jaw, so it is easy to be discharged in the shape of a cube.

First of all, the choice of the crusher machine is determined by the size of feeding and discharging. The feeding degree, product size is coarse, choose the big jaw crusher or more coarse, otherwise use medium and fine. In the calculation of feed size, the maximum open-side feed size is multiplied by 0.85. And the average size of the product is calculated by dividing the maximum feed size by the crushing ratio. In general, the feed size distribution of jaw crushers cannot exceed 10 %. If more than 10 %, the power consumption will increase and the product size will become flaky.

Secondly, when choosing the liner of jaw stone crushers equipment, the user must consider three factors: output, power consumption and wear resistance of liner. In general, the following principles should be followed: maximum feeding size, size change, the size distribution of feeding, the hardness of a material, Abrasion Resistance of materials. The longer the jaw crusher liner, the higher the power consumption, hard materials choose short liner, soft materials choose longliner. In the distribution of materials, thin materials choose short liner, coarse materials choose longliners.

Finally, the crusher in the work, feeding to uniform, can not segregation. If the uneven feeding will occur production capacity reduction, product size is too large, frequent spring action, bowl-shaped bearing pressure, power consumption rise. And it must have iron remover to prevent crushing chamber over iron. If frequent over iron, it may cause shaft broken accident. The moisture content of viscous materials can affect the amount of material through. In terms of moisture content of materials, generally not more than 5 %. In the use of power: Standard stone crusher should reach 75% ~ 80 %, short head crusher should reach 80% ~ 85 %.

Jiangxi Shicheng stone crusher manufacturer is a new and high-tech factory specialized in R&D and manufacturing crushing lines, beneficial equipment,sand-making machinery and grinding plants. Read More

analysis of the single toggle jaw crusher force transmission characteristics

Moses Frank Oduori, David Masinde Munyasi, Stephen Mwenje Mutuli, "Analysis of the Single Toggle Jaw Crusher Force Transmission Characteristics", Journal of Engineering, vol. 2016, Article ID 1578342, 9 pages, 2016. https://doi.org/10.1155/2016/1578342

This paper sets out to perform a static force analysis of the single toggle jaw crusher mechanism and to obtain the force transmission characteristics of the mechanism. In order to obtain force transmission metrics that are characteristic of the structure of the mechanism, such influences as friction, dead weight, and inertia are considered to be extraneous and neglected. Equations are obtained by considering the balance of forces at the moving joints and appropriately relating these to the input torque and the output torque. A mechanical advantage, the corresponding transmitted torque, and the variations thereof, during the cycle of motion of the mechanism, are obtained. The mechanical advantage that characterizes the mechanism is calculated as the mean value over the active crushing stroke of the mechanism. The force transmission characteristics can be used as criteria for the comparison of different jaw crusher mechanism designs in order to select the most suitable design for a given application. The equations obtained can also be used in estimating the forces sustained by the components of the mechanism.

The literature on kinematics and mechanism design identifies three tasks for which linkage mechanisms are commonly designed and used, namely, function generation, motion generation, which is also known as rigid body guidance, and path generation [13]. Way back in 1955, Freudenstein, who is widely regarded as the father of modern Kinematics of Mechanisms and Machines, introduced an analytical method for the design of a four-bar planar mechanism for function generation [4]. Wang et al. presented a study on the synthesis of planar linkage mechanisms for rigid body guidance [5]. An interesting design and application of a planar four-bar mechanism for path generation was reported by Soong and Wu [6]. In general, the use of linkage mechanisms involves the transmission and transformation of motions and forces. In practical applications, linkage mechanisms appear to be more commonly designed and used for the transmission and transformation of motions rather than forces. In such cases, the transmitted forces are quite small.

The jaw crusher happens to be an example of a planar linkage application that is designed and used for the transmission and transformation of motions but also has to transmit, transform, and apply the large forces that are required to crush hard rocks by compression. Therefore it is important to understand the force transmission characteristics of the jaw crusher mechanism and to be able to use them for sound mechanical design of the crusher.

Today, the most commonly used types of jaw crusher are the single toggle and the double toggle designs. The original double toggle jaw crusher was designed by Eli Whitney Blake in the USA in 1857 [7]. The motion of the swing jaw in a double toggle crusher is such that it applies an almost purely compressive force upon the material being crushed. This minimizes wear on the crushing surfaces of the jaws and makes the double toggle jaw crusher suitable for crushing highly abrasive and very hard materials. Even today, the Blake design, with some comparatively minor improvements, can still be found in mines and quarries around the world.

The single toggle design, which was developed between the 1920s and the 1950s, is a simpler, lighter crusher [7]. Its swing jaw has a rolling elliptical motion such that it applies a compressive as well as a rubbing force on the material being crushed. This has a force-feeding effect that improves the throughput of the device, but it also tends to cause rapid wear of the crushing surfaces of the jaws. However, the single toggle jaw crusher has a lower installed cost, as compared to the double toggle design. Improvements in materials and design have made the single toggle jaw crusher more common today as the primary crusher in quarrying operations [8]. According to Carter Russell [9], in 1999 sales of the single toggle jaw crusher exceeded those of the double toggle jaw crusher by a factor of at least nine to one.

This paper performs a static force analysis of the single toggle jaw crusher mechanism. As a result of this analysis, a characteristic force transmission ratio, which may be regarded as a mechanical advantage of the mechanism, is derived. This ratio can be used as a criterion for the comparison of different jaw crusher mechanism designs, with a view to selecting the most suitable design for use in a given application.

Over time, several authors have addressed the static force analysis of the double toggle jaw crusher mechanism. Among the earlier of such efforts is that of Ham et al. [10], who performed a static force analysis of the double toggle jaw crusher mechanism in order to determine the input turning moment that would be required to overcome a known crushing resistance of the material being crushed. They used a graphical method to carry out the analysis.

In discussing linkages, Martin [11] featured the double toggle jaw crusher mechanism as an example of a machine that uses the toggle effect to obtain a large output force that acts through a short distance, but he did not perform a static force analysis of the mechanism.

Erdman and Sandor [1] presented the determination of the mechanical advantage of a double toggle jaw crusher mechanism, as an exercise problem to be solved by(1)the method of instant centres, which is essentially a graphical method;(2)an analytical method that utilized complex number representation of vectors.Norton [2] also discussed the mechanical advantage of linkage mechanisms and explained the toggle effect by the use of a jaw crusher mechanism of the Dodge type [8].

More generally, Lin and Chang [12] addressed the issue of force transmissivity in planar linkage mechanisms. They derived and proposed a force transmissivity index (FTI) that considered the power flow path from the input linkage to the output linkage. They calculated the effective force ratio (EFR) as the ratio of the sum of actual power transmitted at each of the linkage joints in the power flow path to the sum of the maximum possible power that could be transmitted along the same power flow path. They then obtained the FTI as the product of the EFR and the mechanical advantage of the mechanism, thus taking into account the effect of the external load acting on the mechanism. They compared their results to other indices of force transmissivity, such as the Jacobian matrix method [13] and the joint force index (JFI) [14], and found their FTI to be more accurate. Furthermore, the Jacobian matrix method does not consider the effect of the external load while the JFI does not consider the power flow path in the mechanism.

The method used by Lin and Chang [12] involves a static force analysis and the determination of velocities at the joints within the power flow path. Subsequently, Chang et al. [15] extended and applied this method to parallel manipulators, defined, and proposed a mean force transmission index (MFTI). The presentation here will perform a static force analysis and obtain the mechanical advantage of the single toggle jaw crusher mechanism, from first principles.

According to Ham et al. [10], analysis of forces in any machine is based on the fundamental principle which states that the system composed of all external forces and all the inertia forces that act upon any given member of the machine is a system that is in equilibrium.

For a planar mechanism, such as the single toggle jaw crusher, it is customary to treat the forces as if they are coplanar, at least in the initial analysis. The effects of the offsets between the planes of action of the forces can then be revisited at a later stage of analysis and design. The assumption of coplanar forces will be employed in this presentation.

In the static force analysis of a machine, the forces arising due to the accelerations of the machine members are neglected. These forces are taken into account in a dynamic force analysis, which can be done, meaningfully, after the forms and masses of the machine members have been determined. Frictional forces may be taken into account in a static force analysis [16], but in the present case, it shall be assumed that the use of antifriction bearings in the revolute joints reduces frictional forces to negligible levels.

Furthermore, this presentation aims to obtain an indicator of the efficacy of force transmission, in the single toggle jaw crusher, that may be attributed to the structure of the mechanism per se. Therefore, frictional and inertia forces may be regarded as extraneous to this purpose and will not be included in this analysis.

In a planar four-bar mechanism with four revolute joints, which can be denoted by or , the efficacy of force transmission has often been expressed by what is known as the transmission angle [2, 3, 11, 17]. This works well enough if, for instance, the mechanism is a crank-and-rocker, in which the crank is the input link and the rocker is the output link. Then, the transmission angle becomes the acute angle between the rocker and the coupler, and, indeed, its value indicates the efficacy of force transmission in the mechanism.

The single toggle jaw crusher mechanism can be modelled as a planar mechanism, as shown in Figure 1. However, in this mechanism, it is the coupler that is the output link and the transmission angle, as defined in the above cited literature, fails to be a suitable indicator of the efficacy of force transmission. Therefore, a better indicator of the efficacy of force transmission in the single toggle jaw crusher is sought in this paper.

Erdman and Sandor [1], Norton [2], and Shigley and Uicker Jr. [3] presented methods for determining the mechanical advantage of planar mechanisms that make the assumption of 100% mechanical efficiency for the mechanism and find the mechanical advantage of the mechanism to be inversely proportional to the output-to-input angular velocity ratio. The presentation by Shigley and Uicker Jr. [3] defined the mechanical advantage as the ratio of the output torque to the input torque, which led to a slightly different expression for the mechanical advantage, as compared to Erdman and Sandor [1] and Norton [2], who defined mechanical advantage as the ratio of output force to input force.

The methods presented by Erdman and Sandor [1], Norton [2], and Shigley and Uicker Jr. [3] give no indication of the actual forces that are sustained by the members of the mechanism, knowledge of which would be necessary at the design stage.

The method used in this paper includes the following:(i)A static force analysis that neglects the frictional and inertia forces is performed.(ii)All the forces and moments are assumed to be coplanar.(iii)The analysis proceeds by considering the equilibrium of the forces acting at the moving joints of the mechanism and relating them to the input torque as well as the load torque. This may be compared to the method presented by Abhary [18].The method used here is systematic and therefore clear and simple to follow and to use. As a result of the analysis, a characteristic mechanical advantage of the single toggle jaw crusher mechanism is obtained, which may be used as a criterion for selecting such mechanisms.

In the kinematical model of the single toggle jaw crusher, which is illustrated in Figure 1, the eccentric shaft is modelled as a short crank, of length , that continuously rotates about a fixed axis, at . The swing jaw is modelled as the coupler link , of length , which moves with a complex planar motion that has both rotational and translational components. The toggle link is modelled as the rocker , which oscillates about the fixed axis at . The fixed jaw is considered to be an integral part of the frame of the machine.

Oduori et al. [19] analysed the kinematics of the single toggle jaw crusher, as modelled in Figure 1, and found the following expression:Cao et al. [20] used the dimensional data for a PE single toggle jaw crusher, as shown in Table 1.

In the cycle of motion of the single toggle jaw crusher mechanism, two phases, known as the toggle phases, are of particular interest. In each of the toggle phases, the crank and the coupler link fall on a single straight line. Therefore, the toggle phases occur when and when . For the first toggle phase, equation (2) can be reduced to the following:Equation (3) is readily solved to give for the first toggle phase.

In performing the static force analysis it shall be assumed that the masses of the links, as well as friction forces, are negligible. The effects of these forces can be considered at a later stage in the design of the mechanism. In Figure 2, is the driving torque, applied at the crank axis , to drive the crank and the entire crusher mechanism. is the torque, acting about the axis of joint , due to the resistance of the feed material against being crushed. , , and are the forces in links 2, 3, and 4, respectively, and they are all assumed to be compressive. The system of forces and moments is assumed to be in equilibrium in every phase of motion of the mechanism.

Let us start by considering the crank. Static force analysis is based on the assumption that there are no accelerations in the mechanism. Referring to Figures 1, 2, and 3, the equilibrium of moments acting on the crank, about the fixed joint , leads to the following result:Next let us consider the coupler. The equilibrium of forces at joint leads to the following:From equations (5) and (6), it follows thatThe statement in equation (7) is illustrated in Figure 4.

Moreover, it should be evident from Figures 3 and 4 thatNow, in Figure 3, by considering the equilibrium of all the forces acting upon the coupler, the following is obtained:Moreover, in Figure 3, the equilibrium of moments acting on the coupler, about the joint , leads to the following result:From equations (9) and (10), it follows thatA relationship between and can now be obtained from equations (7) and (11), as follows:Equation (12) is in dimensionless form. The left-hand side of this equation can be regarded as a force transmission ratio that compares the nominal transmitted force, , to the nominal input force, . This ratio is an indicator of the theoretical force transmission potential for any given phase of motion of the mechanism.

For a given crusher mechanism, the values of and can be determined from purely kinematical considerations, by the use of (1) along with the dimensional data of the mechanism, and then the value of the right-hand side of (12) will be determined.

Using the dimensional data of the mechanism, given in Table 1, along with given values of , the corresponding values of were computed and then used in (12) to determine the corresponding force transmission ratios, for one and a half cycles of motion of the crank. The results are plotted in Figure 5.

The first spike in Figure 5 indicates the great amplification of the crushing force that occurs at the first toggle position, which corresponds to a crank angle of about . Theoretically, the crushing force amplification should be infinite at this toggle phase. Moreover, there occurs an abrupt reversal of the sign of the force transmission ratio from positive to negative, at this toggle phase. The second spike in Figure 5, which is also accompanied by a reversal in the sign of the force transmission ratio, occurs at a crank angle of about . This spike corresponds to the second toggle phase of the mechanism.

The great amplification of transmitted force, accompanied by the abrupt reversal of the sign of the force transmission ratio, at each of the toggle phases, may be compared with the phenomenon of resonance, in mechanical vibrations, which also features great amplification of the responding motion, accompanied by a reversal of the phase between the forcing and the responding functions.

As the crank rotates from to , the crusher would be on the idle stroke with the swing jaw being retracted and no work being done in crushing the feed material. This is evidenced by the negative values of the force transmission ratio, between these two angular positions of the crank, in Figure 5. Useful work is done as the crank rotates from to , in a succeeding cycle of motion of the crank. Thus, during each cycle of motion of the crank, the useful working stroke of the mechanism lasts for about of rotation of the crank, which is very slightly greater than half the cycle of motion of the crank. On the other hand, during each cycle of motion of the crank, the idle stroke lasts for of rotation of the crank, which is very slightly less than half the cycle of motion of the crank.

Thus, the mechanism has a quick return feature that is hardly noticeable since the crushing stroke lasts for 50.37% of the complete cycle of its motion, while the idle stroke lasts for 49.63% of the complete cycle of the motion of the mechanism.

In the preceding section, we have seen that the crushing stroke lasts for only about 50% of each complete cycle of motion of the single toggle jaw crusher. For the other 50% of the complete cycle of motion, the swing jaw is being retracted in preparation for the next crushing stroke.

Moreover, in Figure 5, it can be seen that the force transmission ratio varies from a very high value, at the beginning of the crushing stroke, that initially falls very rapidly and then levels off to reach a minimum value of less that unity (about 0.6), about halfway through the crushing stroke. The latter half of the crushing stroke appears to be a mirror image of the earlier half, in which the force transmission ratio first rises gradually and then spikes to a very high value at the end of the crushing stroke. Sample values of the force transmission ratio during the useful crushing stroke are given in Table 2.

The fact that the crushing stroke commences with a very high value of the force transmission ratio is advantageous when crushing brittle material, which is often the case. Since brittle materials fracture without undergoing significant deformation, actual crushing of brittle materials in a single toggle jaw crusher would occur soon after commencement of the crushing stroke, where the force transmission ratio is high.

According to Chinese jaw crusher manufacturers data [21], the PE 400 by 600 single toggle jaw crusher has 30kW motor power and an input eccentric shaft speed of 275rpm or 28.7979 radians per second. Assuming that the input speed is constant, the input torque is found to be 1.0417kNm. By using this information, along with the data in Table 1 and (12), the transmitted torque, in kilonewton-metres, can be estimated to be the following:The above calculation assumes a 100% power transmission efficiency. Equation (13) was used to calculate the values of the transmitted torque that are given in Table 3.

The above calculations reveal that the minimum value of the transmitted torque will be about 55 times as big as the input torque, with the theoretical maximum value being infinity. This is why a material that cannot be crushed will lead to breakage of the toggle link.

A force transmission ratio that would characterize the single toggle jaw crusher was calculated as the mean value of the force transmission ratio over a complete useful crushing stroke, which does not include the retraction stroke.

According to the Mean Value Theorem of the integral calculus [22], if a function is continuous on the closed interval , then the mean value of for that interval can be determined as follows:In determining the characteristic mechanical advantage, the mean value of the force transmission ratio was determined as follows:The integral in (15) was evaluated numerically by the use of the composite trapezoidal rule [23]. For , taken at one-degree intervals, the integral was evaluated as follows:For , taken as three unequal intervals, the integral was evaluated as follows:In (16) and (17), , for instance, is the value of for the case where . The total integral was then determined as follows:Thus, the characteristic mechanical advantage was determined as follows:From the preceding analysis, the force transmission characteristics for the PE 400 by 600 single toggle jaw crusher mechanism are summed up in Table 4.

The minimum force transmission ratio occurs at about the midpoint of the active crushing stroke, while the maximum force transmission ratio occurs at the end of the active crushing stroke. However, the force transmission ratio at the beginning of the active crushing stroke is also very highabout 74% of the value at the end of the crushing stroke.

Given a number of different mechanism designs, the characteristics given in Table 4 may be calculated for each candidate mechanism and used, among others, as criterion in the selection of a suitable jaw crusher mechanism for a given application.

A static force analysis of the single toggle jaw crusher mechanism was carried out. The method used is systematic, clear, and simple to follow and to use. As a result of the static force analysis, some force transmission characteristics of the single toggle jaw crusher mechanism were obtained. The analysis can also be used to determine the forces that are sustained by each of the components of the single toggle jaw crusher mechanism, provided that the values of the input torque and load torque are known.

An expression for the force transmission ratio of the single toggle jaw crusher mechanism was derived. By using the dimensional data of the PE 400 by 600 jaw crusher, the maximum value of the force transmission ratio was found to be about 3268, the minimum value of the force transmission ratio was found to be about 0.61, and the mean value of the force transmission ratio was found to be about 10.6. These metrics can be used as criteria in the selection of a suitable mechanism design to be used in a given application, out of different alternatives.

The force transmission ratio was found to be very high at the beginning of the active crushing stroke, dropped off rapidly and then levelled off at about the minimum value, remained at the low value for about two-thirds of the active crushing stroke, and then rose rapidly to a very high value at the end of the active crushing stroke. The fact that the force transmission ratio is very high at the beginning of the active stroke is advantageous in crushing brittle materials which fracture without undergoing appreciable deformation.

Copyright 2016 Moses Frank Oduori et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

jaw crusher working principle

A sectional view of the single-toggle type of jaw crusher is shown below.In one respect, the working principle and application of this machine are similar to all types of rock crushers, the movable jaw has its maximum movement at the top of the crushing chamber, and minimum movement at the discharge point. The motion is, however, a more complex one than the Dodge motion, being the resultant of the circular motion of the eccentric shaft at the top of the swing jaw. combined with the rocking action of the inclined toggle plate at the bottom of this jaw. The motion at the receiving opening is elliptical; at the discharge opening, it is a thin crescent, whose chord is inclined upwardly toward the stationary jaw. Thus, at all points in the crushing chamber, the motion has both, vertical and horizontal, components.

It will be noted that the motion is a rocking one. When the swing jaw is rising, it is opening, at the top, during the first half of the stroke, and closing during the second half, whereas the bottom of the jaw is closing during the entire up-stroke. A reversal of this motion occurs during the downstroke of the eccentric.

The horizontal component of motion (throw) at the discharge point of the single-toggle jaw crusher is greater than the throw of the Dodge crusher at that point; in fact, it is about three-fourths that of Blake machines of similar short-side receiving-opening dimensions. The combination of favorable crushing angle, and nonchoking jaw plates, used in this machine, promotes a much freer action through the choke zone than that in the Dodge crusher. Capacities compare very favorably with comparable sizes of the Blake machine with non-choking plates, and permissible discharge settings are finer. A table of ratings is given.

The single-toggle type jaw crusher has been developed extensively. Because of its simplicity, lightweight, moderate cost, and good capacity, it has found quite a wide field of application in portable crushing rigs. It also fits into the small, single-stage mining operation much better than the slower Dodge type. Some years since this type was developed with very wide openings for reduction crushing applications, but it was not able to seriously challenge the gyratory in this field, especially when the high-speed modern versions of the latter type were introduced.

Due to the pronounced vertical components of motion in the single-toggle machine, it is obvious that a wiping action takes place during the closing strokes; either, the swing jaw must slip on the material, or the material must slip along the stationary jaw. It is inevitable that such action should result in accelerated wear of the jaw plates; consequently, the single-toggle crusher is not an economical machine for reducing highly abrasive, or very hard, tough rock. Moreover, the large motion at the receiving opening greatly accentuates shocks incidental to handling the latter class of material, and the full impact of these shocks must be absorbed by the bearings in the top of the swing jaw.

The single-toggle machine, like the Dodge type, is capable of making a high ratio-of-reduction, a faculty which enables it to perform a single-stage reduction of hand-loaded, mine run ore to a suitable ball mill, or rod mill, feed.

Within the limits of its capacity, and size of receiving openings, it is admirably suited for such operations. Small gravel plant operations are also suited to this type of crusher, although it should not be used where the gravel deposit contains extremely hard boulders. The crusher is easy to adjust, and, in common with most machines of the jaw type, is a simple crusher to maintain.

As rock particles are compressed between the inclined faces of the mantle and concaves there is a tendency for them to slip upward. Slippage occurs in all crushers, even in ideal conditions. Only the particles weight and the friction between it and the crusher surfaces counteract this tendency. In particular, very hard rock tends to slip upward rather than break. Choke feeding this kind of material can overload the motor, leaving no option but to regulate the feed. Smaller particles, which weigh less, and harder particles, which are more resistant to breakage, will tend to slip more. Anything that reduces friction, such as spray water or feed moisture, will promote slippage.

Leading is a technique for measuring the gap between fixed and moveable jaws. The procedure is performed while the crusher is running empty. A lead plug is lowered on a lanyard to the choke point, then removed and measured to find out how much thickness remains after the crusher has compressed it. This measures the closed side setting. The open side setting is equal to this measurement plus the throw of the mantle. The minimum safe closed side setting depends on:

Blake (Double Toggle) Originally the standard jaw crusher used for primary and secondary crushing of hard, tough abrasive rocks. Also for sticky feeds. Relatively coarse slabby product, with minimum fines.

Overhead Pivot (Double Toggle) Similar applications to Blake. Overhead pivot; reduces rubbing on crusher faces, reduces choking, allows higher speeds and therefore higher capacities. Energy efficiency higher because jaw and charge not lifted during cycle.

Overhead Eccentric (Single Toggle) Originally restricted to sampler sizes by structural limitations. Now in the same size of Blake which it has tended to supersede, because overhead eccentric encourages feed and discharge, allowing higher speeds and capacity, but with higher wear and more attrition breakage and slightly lower energy efficiency. In addition as compared to an equivalent double toggle, they are cheaper and take up less floor space.

Since the jaw crusher was pioneered by Eli Whitney Blake in the 2nd quarter of the 1800s, many have twisted the Patent and come up with other types of jaw crushers in hopes of crushing rocks and stones more effectively. Those other types of jaw crusher inventors having given birth to 3 groups:

Heavy-duty crushing applications of hard-to-break, high Work Index rocks do prefer double-toggle jaw crushers as they are heavier in fabrication. A double-toggle jaw crusher outweighs the single-toggle by a factor of 2X and well as costs more in capital for the same duty. To perform its trade-off evaluation, the engineering and design firm will analyze technical factors such as:

1. Proper selection of the jaws. 2. Proper feed gradation. 3. Controlled feed rate. 4. Sufficient feeder capacity and width. 5. Adequate crusher discharge area. 6. Discharge conveyor sized to convey maximum crusher capacity.

Although the image below is of a single-toggle, it illustrates the shims used to make minor setting changes are made to the crusher by adding or removing them in the small space between the crushers mainframe and the rea toggle block.

The jaw crusher discharge opening is the distance from the valley between corrugations on one jaw to the top of the mating corrugation on the other jaw. The crusher discharge opening governs the size of finished material produced by the crusher.

Crusher must be adjusted when empty and stopped. Never close crusher discharge opening to less than minimum opening. Closing crusher opening to less than recommended will reduce the capacity of crusher and cause premature failure of shaft and bearing assembly.

To compensate for wear on toggle plate, toggle seat, pitman toggle seat, and jaws additional shims must be inserted to maintain the same crusher opening. The setting adjustment system is designed to compensate for jaw plate wear and to change the CSS (closed side setting) of the jaw crusher. The setting adjustment system is built into the back frame end.

Here also the toggle is kept in place by a compression spring. Large CSS adjustments are made to the jaw crusher by modifying the length of the toggle. Again, shims allow for minor gap adjustments as they are inserted between the mainframe and the toggle block.

is done considering the maximum rock-lump or large stone expected to be crushed and also includes the TPH tonnage rate needing to be crushed. In sizing, we not that jaw crushers will only have around 75% availability and extra sizing should permit this downtime.

As a rule, the maximum stone-lump dimension need not exceed 80% of the jaw crushers gape. For intense, a 59 x 79 machine should not see rocks larger than 80 x 59/100 = 47 or 1.2 meters across. Miners being miners, it is a certainty during day-to-day operation, the crusher will see oversized ore but is should be fine and pass-thru if no bridging takes place.

It will be seen that the pitman (226) is suspended from an eccentric on the flywheel shaft and consequently moves up and down as the latter revolves, forcing the toggle plates outwards at each revolution. The seating (234) of the rear toggle plate (239) is fixed to the crusher frame; the bottom of the swing jaw (214) is therefore pushed forward each time the pitman rises, a tension rod (245) fitted with a spring (247) being used to bring it back as the pitman falls. Thus at each revolution of the flywheel the movable jaw crushes any lump of ore once against the stationary jaw (212) allowing it to fall as it swings back on the return half-stroke until eventually the pieces have been broken small enough to drop out. It follows that the size to which the ore is crushed.

The jaw crusher is not so efficient a machine as the gyratory crusher described in the next paragraph, the chief reason for this being that its crushing action is confined to the forward stroke of the jaw only, whereas the gyratory crusher does useful work during the whole of its revolution. In addition, the jaw crusher cannot be choke-fed, as can the other machine, with the result that it is difficult to keep it working at its full capacity that is, at maximum efficiency.

Tables 5 and 6 give particulars of different sizes of jaw crushers. The capacity figures are based on ore weighing 100 lb. per cubic foot; for a heavier ore, the figures should be increased in direct proportion to its weight in pounds per cubic foot.

The JAW crusher and the GYRATORY crusher have similarities that put them into the same class of crusher. They both have the same crushing speed, 100 to 200 R.P.M. They both break the ore by compression force. And lastly, they both are able to crush the same size of ore.

In spite of their similarities, each crusher design has its own limitations and advantages that differ from the other one. A Gyratory crusher can be fed from two sides and is able to handle ore that tends to slab. Its design allows a higher-speed motor with a higher reduction ratio between the motor and the crushing surface. This means a dollar saving in energy costs.

A Jaw crusher on the other hand requires an Ely wheel to store energy. The box frame construction of this type of crusher also allows it to handle tougher ore. This design restricts the feeding of the crusher to one side only.

The ore enters from the top and the swing jaw squeezes it against the stationary jaw until it breaks. The broken ore then falls through the crusher to be taken away by a conveyor that is under the crusher.Although the jaws do the work, the real heart of this crusher is the TOGGLE PLATES, the PITMAN, and the PLY WHEEL.

These jaw crushers are ideal forsmall properties and they are of the high capacity forced feed design.On this first Forced Feed Jaw Crusher, the mainframe and bumper are cast of special alloy iron and the initial cost is low. The frame is ribbed both vertically and horizontally to give maximum strength with minimum weight. The bumper is ruggedly constructed to withstand tremendous shock loads. Steel bumper can be furnished if desired. The side bearings are bronze; the bumper bearings are of the antifriction type.

This bearing arrangement adds both strength and ease of movement. The jaw plates and cheek plates are reversible and are of the best-grade manganese steel. The jaw opening is controlled by the position of an adjustable wedge block. The crusher is usually driven by a V-to-V belt drive, but it can be arranged for either V-to-flat or fiat belt drive. The 8x10 size utilizes a split frame and maybe packed for muleback transportation. Cast steel frames can be furnished to obtain maximum durability.

This second type of forced feed rock crusher is similar in design to the Type H listed above except for having a frame and bumper made of cast steel. This steel construction makes the unit lighter per unit of size and adds considerable strength. The bearings are all of the special design; they are bronze and will stand continuous service without any danger of failure. The jaw and cheek plates are manganese steel; and are completely reversible, thus adding to their wearing life. The jaw opening is controlled by the position of an adjustable wedge block. The crushers are usually driven by V-to-V but can be arranged for V-to-flat and belt drive. The 5x6 size and the 8x10 size can be made with sectionalized frame for muleback transportation. This crusher is ideal for strenuous conditions. Consider a multi jaw crusher.

Some jaw crushers are on-floor, some aboveground, and others underground. This in many countries, and crushing many kinds of ore. The Traylor Bulldog Jaw crusher has enjoyed world wide esteem as a hard-working, profit-producing, full-proof, and trouble-free breaker since the day of its introduction, nearly twenty years ago. To be modern and get the most out of your crushing dollars, youll need the Building breaker. Wed value the privilege of telling you why by letter, through our bulletins, or in person. Write us now today -for a Blake crusher with curved jaw plates that crush finer and step up production.

When a machine has such a reputation for excellence that buyers have confidence in its ability to justify its purchase, IT MUST BE GOOD! Take the Type G Traylor Jaw Crusher, for instance. The engineers and operators of many great mining companies know from satisfying experience that this machine delivers a full measure of service and yields extra profits. So they specify it in full confidence and the purchase is made without the usual reluctance to lay out good money for a new machine.

The success of the Type G Traylor Jaw Crusheris due to several characteristics. It is (1) STRONG almost to superfluity, being built of steel throughout; it is (2) FOOL-PROOF, being provided with our patented Safety Device which prevents breakage due to tramp iron or other causes of jamming; it is (3) ECONOMICAL to operate and maintain, being fitted with our well-known patented Bulldog Pitman and Toggle System, which saves power and wear by minimizing frictionpower that is employed to deliver increased production; it is (4) CONVENIENT to transport and erect in crowded or not easily accessible locations because it is sectionalized to meet highly restrictive conditions.

Whenever mining men need a crusher that is thoroughly reliable and big producer (which is of all time) they almost invariably think first of a Traylor Type G Jaw Crusher. By experience, they know that this machine has built into it the four essentials to satisfaction and profit- strength, foolproofness, economy, and convenience.

Maximum STRENGTH lies in the liberal design and the steel of which crushers parts are made-cast steel frame, Swing Jaw, Pitman Cap and Toggles, steel Shafts and Pitman rods and manganese steel Jaw Plates and Cheek Plates. FOOLPROOFNESS is provided by our patented and time-tested safety Device which prevents breakage due to packing or tramp iron. ECONOMY is assured by our well-known Bulldog Pitman and Toggle System, which saves power and wear by minimizing friction, the power that is used to deliver greater productivity. CONVENIENCE in transportation and erection in crowded or not easily accessible locations is planned for in advance by sectionalisation to meet any restrictive conditions.

Many of the worlds greatest mining companies have standardized upon the Traylor Type G Jaw Crusher. Most of them have reordered, some of them several times. What this crusher is doing for them in the way of earning extra dollars through increased production and lowered costs, it will do for you! Investigate it closely. The more closely you do, the better youll like it.

characteristics and comparison of four types of jaw crushers | fote machinery

As ideal primary or secondary crusher equipment, jaw crushers with different types are often used in various industries. Depending on different ways of moving, jaw crushers are divided into four types: Blake jaw crusher, Dodge jaw crusher, PE universal jaw crusher and mobile jaw crusher.

There are two jaws in a blake jaw crusher, one is stationary and vertical, the other is movable and swing. The swing jaw reciprocates in a horizontal plane, and generally the angle between fixed jaw and movable jaw is of 20 to30.

An eccentric shaft is positioned on the top of the crusher. The swing jaw plate hangs on the eccentric drive shaft and moves up and down in elliptical motion, which compresses rock material as it moves down from the feeding part.

As the eccentric rotates it pushed down on the pitman which in turn flattens the angle between the two toggles since the rear toggle is pivoting against the frame, the front toggle pushes on the swing jaw closing the gap between the two jaw plates.

Both of them adopt way of compression: because the top of the toggles is mounted low in relation to the swing jaw and far from the hinge point it is virtually a straight-line motion. This type of motion gives a straight compressive force with low abrasion jaw plates

Single toggle jaw crusher has less toggle, and has two movements at the same time law plate swing together with eccentric shaft moving up and down. Sometimes single toggle jaw crusher performs better than double toggle jaw crusher in productivity.

In the dodge type jaw crushers, the jaws are farther apart at the top than at the bottom which form a tapered chute so that the material is crushed progressively smaller and smaller as it travels downward until it is small enough to escape from the bottom opening.

The universal jaw crusher combines the principles of both Black and Dodge jaw crushers. The pivot is slightly above the bottom end of the movable jaw and therefore it provides two strokes per revolution. When stone material goes through the crushing chamber, with moving jaw compressing towards down and inside, it will generate aggressive force feed action to reduce the size of material.

The mobile crusher is also called the mobile crushing station, including tyre mobile crushing station and crawler mobile crushing station, which is a kind of rock crushing equipment newly developed by our company.

Unlike the traditional jaw crusher, this new type mobile crusher can be easily and flexibly moved to the crushing site, which eliminates the obstacles caused by the crushing sites and the conditions.

Therefore, it is widely applied in coal mining plants, infrastructure, road construction, and urban construction waste recycling which have more requirements on the mobility of the crushing sites.

Mobile jaw crusher: High mobility determines that it is suitable for frequent conversion of crushing sites (like road construction, urban construction waste disposal, etc). Thus, its price is higher than other kinds of jaw crushers.

The various types of jaw crushers designed by Fote Company are widely used in many fields including heavy-duty mining, cement industry, agro-based industries, cement plants, ceramic plants, and salt plants. All jaw crusher products can be customized according to your demands on like productions and jaw plates.

If you have any questions during the purchase of a jaw crusher, or if you are not sure which type of jaw crusher is suitable for you, please leave us a message anytime to get a professional answer from our engineers.

As a leading mining machinery manufacturer and exporter in China, we are always here to provide you with high quality products and better services. Welcome to contact us through one of the following ways or visit our company and factories.

Based on the high quality and complete after-sales service, our products have been exported to more than 120 countries and regions. Fote Machinery has been the choice of more than 200,000 customers.

mechtech singletoggle

The dynamic application of these crushers helps crush various materials such as Black Trap, Basalt, Granite, Iron Ore, Ferro alloys, etc. of more density with high-performance and MechTech Double Toggle Jaw Crushers are designed for primary, secondary, and sometimes tertiary applications.

The Engineering experience spanning over three decades with excellent after-sales service keep the customers permanently associated with MECHTECH to fulfill their production goals. MechTech Jaw Crushers are proudly manufactured in India and has more than 4000 installations domestically and overseas.

MechTech offers elaborate range ofboth Double Toggle Jaw Crusher and Single Toggle Jaw Crusher to provide primary and secondary crushing solution at substantial return on investment by minimal operating cost.

For MechTech Double Toggle Jaw Crusher, crushing takes place by compression / pressure between one fixed and another moveable jaw. The Powerful geometrical configuration of the crushing chamber is engineered in a way which ensures crushing without rubbing action for crushing every hard material. This indeed reduces wear and tear of the jaw plates. MechTech Double Toggle Jaw Crusher incorporates the full spring-loaded safety arm which disconnects immediately to make the driven pulley free from the electric motor during accidental entry of any foreign material like tramp iron. The crusher is choke fed uniformly across the width of the crusher for max productivity and consistent product gradation.

The MechTech Double Toggle Jaw Crusher consists of an eccentric shaft which triggers a Pitman Double Toggle mechanism to move forward the swing jaw that is placed at the hinged top and, to further generate the crushing pressure on the feed material against the fixed jaw. The return cycle occurs by the action of pullback compression spring holding it at the base. The continuous lubrication of Pitman, Toggle mechanism and bearings occurs by automatic motorized oil splash system, in closed-circuit with Oil Tank, Pump, Motors, Flow-switch etc.

new design single toggle jaw crusher - best stone crusher plant solution from henan dewo

Dewo machinery can provides complete set of crushing and screening line, including Hydraulic Cone Crusher, Jaw Crusher, Impact Crusher, Vertical Shaft Impact Crusher (Sand Making Machine), fixed and movable rock crushing line, but also provides turnkey project for cement production line, ore beneficiation production line and drying production line. Dewo Machinery can provide high quality products, as well as customized optimized technical proposal and one station after- sales service.

DYNAMIC DESIGN The Dynamic design of New single toggle jaw crusher promises efficient engineered product with massive crushing energy. The Design ensured the adaptability of Maxwell Single Toggle Jaw Crusher with stationary, Portable and Mobile Quarring and Mining applications, w more...

Jaw Crusher Brackets are designed by dexterous professionals by using premium quality material and progressive Jaw Crusher Brackets technology. Specifications:- Sizes Available : 12 x 7 (300mm x 175mm) TO 48 x 42 (1200mm x 1050) Capacity: Up to 300tph Brand: -Lakshmi Features: Modular design Precisely engineered Made with the latest ...

Blake crusher is of two types, viz: single toggle and double toggle jaw crushers. The single toggle swing jaw is suspended on the eccentric shaft, which allows a lighter, more compact design than with the double toggle crusher [10]. Moreover, the single toggle crusher is taking over most new applications due to lower cost and

Double toggle crusher is smaller than a single toggle crusher, is widely used at home and abroad for its lesser price, simple structure and reliable operation. 3 Double cavity jaw crusher This type is design firstly by experts of Germany, it also has two types as single toggle double cavity jaw crusher and double toggle double cavity jaw crusher.

jaw crusher, double toggle jaw crushers, single toggle jaw crushers, gujarat, india

Double Toggle Jaw Crushers are preferred for crushing ususually hard, abrasive rocks and other materials like ferroalloys and glass. They differ substantially from other types of crushers. There is no rotary motion in the crushing cycle and all crushing is done by compression of the feed material between two massive jaws plates. The moving jaw compresses the material against the stationary jaw. Jaw plates can be either smooth or corrugated.

Double Toggle Jaw Crushers have one jaw fixed, while the other pivots about a top hinge. This moving jaw is shaped to move firmly and squarely against the material. There is no rubbing or grinding. Only compression, which produces a generally cubical product with minimum fines. The moving jaw is very well balanced, so 95% of the drive motor power is ued for crushing. While only 5% of the power is needed to move the jaw itself. As a result of this high mechanical efficiency, double Toggle Jaw Crushers require smaller size motors, keeping power costs down. Behind the stationary jaw are shims, used to adjust the distance between the lower ends of the jaws (closed side setting). The setting determines the output product size. There is also an arrangement of safety arm for protection from us-crushables accidental overloads.

jaw crusher toggle plates vs. hydraulic toggle relief systems - eagle crusher

The crushing market caters to a wide range of material processing industries, like aggregate, asphalt, and concrete and demolition recycling, that handle an even wider range of materials, including limestone, concrete, and gravel, among many others. Yet, all crusher...

As the summer months arrive in North America, operating portable crushing and screening plants on a job site outdoors can become more demanding as exposure to high temperatures introduce new safety hazards to team members. Dangers that are inherent to hot weather like...

From horizontal shaft impactors to jaw crushers, Eagle Crusher manufactures some of the toughest and most powerful crushing equipment on the market, empowering producers to conquer any size crushing project. Not only that, but Eagle Crushers team of engineers...

On a crushing job, every machine and piece of crushing equipment works together to contribute to the success of production. However, it is necessary to recognize that certain components of equipment like portable plants should require extra care to achieve that...

Striking the right balance between producing a quality aggregate product and maximizing operational efficiency is a familiar challenge on any crushing site. To achieve harmony, the right equipment needs to be set up and configured to account for any variables that...

Eagle Crusher Launches New Company Website Eagle Crusher is pleased to announce the launch of our new company website that is designed to better help users find the right crushing and screening products for their operations. An industry leader for more than 100 years,...

Portable crushing and screening plants are engineered with the safety of its operators and others in mind. Just as well, potential safety hazards like pinch points and finger injuries can be prevented on the job site by properly training team members and following...

The most effective crushing operations are often complemented by an appropriate configuration of screening plants and systems that can best sort and stockpile the material being processed as efficiently possible. Eagle Crusher manufactures a comprehensive range of...

In the crushing business, abrasive materials like aggregate, concrete, and asphalt can wear away at vital components across the production line. While these components are manufactured to withstand steady wear, they will require upkeep. As the entry point for the flow...

Portable plants and other crushing equipment can come in many shapes and sizes depending on the needs of a producer. Just as integral to a crushing operation as an impactor or jaw crusher are the screens being utilized to sort product. With so many options and...

Jaw crushers are immensely powerful machines, able to process and reduce aggregate and demolition material efficiently. Despite their powerful nature, they are not immune from damage and generally require a safety device called a toggle plate to protect them.

A toggle plate basically operates like a fuse. If any material enters a jaw crusher that cannot be crushed, whether due to its size or composition, the toggle plate is meant to break, relaxing the moving jaw open to allow for the uncrushable material to fall through or be removed manually.

Traditionally, jaw crusher toggle plates are made of metal machined or cast in a way that they are expected to fracture or bend at a certain pressure, indicating something too hard is in the crushing chamber.

However, for many jaw crusher owners and operators, spending time to remove broken toggle plates, spending money to replace them, and spending even more time to reinstall them incurs a substantial cost.

Instead of the toggle self-destructing when an uncrushable material enters the jaw crusher, a hydraulic relief system simply relies on its hydraulic technology to relax automatically, allowing the material to pass through or be removed, and then to reset.

The hydraulic toggle relief system was engineered to serve as a sustainable alternative to its consumable equivalent, eliminating the need to replace fractured toggles. However, traditional hydraulic toggle or relief systems require extremely high pressures in the system to achieve the necessary forces required to hold the jaw in place for crushing.

The Eagle Crusher hydraulic toggle relief system is available to be equipped onto any Eagle Crusher jaw crushers and will reduce unexpected downtime, decrease unnecessary replacement costs, and keep you up and running.

The unique, patent-pending system differentiates itself from other hydraulic systems as it utilizes much lower hydraulic pressures to hold the toggle in place, increasing durability and reducing risk of system failure.

The crushing market caters to a wide range of material processing industries, like aggregate, asphalt, and concrete and demolition recycling, that handle an even wider range of materials, including limestone, concrete, and gravel, among many others. Yet, all crusher...

As the summer months arrive in North America, operating portable crushing and screening plants on a job site outdoors can become more demanding as exposure to high temperatures introduce new safety hazards to team members. Dangers that are inherent to hot weather like...

From horizontal shaft impactors to jaw crushers, Eagle Crusher manufactures some of the toughest and most powerful crushing equipment on the market, empowering producers to conquer any size crushing project. Not only that, but Eagle Crushers team of engineers...

On a crushing job, every machine and piece of crushing equipment works together to contribute to the success of production. However, it is necessary to recognize that certain components of equipment like portable plants should require extra care to achieve that...

Striking the right balance between producing a quality aggregate product and maximizing operational efficiency is a familiar challenge on any crushing site. To achieve harmony, the right equipment needs to be set up and configured to account for any variables that...

Eagle Crusher Launches New Company Website Eagle Crusher is pleased to announce the launch of our new company website that is designed to better help users find the right crushing and screening products for their operations. An industry leader for more than 100 years,...

Portable crushing and screening plants are engineered with the safety of its operators and others in mind. Just as well, potential safety hazards like pinch points and finger injuries can be prevented on the job site by properly training team members and following...

The most effective crushing operations are often complemented by an appropriate configuration of screening plants and systems that can best sort and stockpile the material being processed as efficiently possible. Eagle Crusher manufactures a comprehensive range of...

In the crushing business, abrasive materials like aggregate, concrete, and asphalt can wear away at vital components across the production line. While these components are manufactured to withstand steady wear, they will require upkeep. As the entry point for the flow...

Portable plants and other crushing equipment can come in many shapes and sizes depending on the needs of a producer. Just as integral to a crushing operation as an impactor or jaw crusher are the screens being utilized to sort product. With so many options and...

jaw crusher vs gyratory crusher - jxscmachine

Jaw crusher and gyratory crusher as the primary crusher, play an important role in the crushing process. How to choose the suited primary crusher from the jaw crusher? Whats the difference between a jaw crusher and a gyratory crusher? JXSC starts with the following points: structure, capacity, energy consumption, maintenance.

All in all, if one set jaw crusher can achieve the needs of production, buy jaw crusher; if need two sets of jaw crusher, that would be better to buy a gyratory crusher. You may interest in 1. Single Toggle vs Double Toggle Jaw Crusher 2. Jaw Crusher Operation

single toggle jaw crusher, double toggle jaw crushers

Royal Engineering offers complete range of single toggle jaw crushers for all types of rock, ores & minerals.These crushers are designed to operate in most rugged environment and need less maintenance.

Available from 5 TPH to 300TPH Capacity machine Royals range of single toggle jaw crushers are designed with an upward facing toggle system. This produces a Flat Elliptical Movement at the bottom of the swing jaw which increases the efficiency of the crushing. The Unique Elliptical motion of the swing jaw guarantees a highly efficient production rate at every setting. This special motion of the jaw also minimizes scrubbing action common in single toggle jaw crushers.

The capacity of jaw crusher can be maximized by providing continuous regulated feed. The under size material (below CSS) should be removed from the feed to eliminate packing and excessive wear on the jaws. These crushers are designed for exceptionally heavy duty and continuous operations. These are well suited for stationary and mobile applications.

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double toggle jaw crusher at best price in india

Sector A7, Ghaziabad D-65, Sector A-7, Part-1, Trans Delhi Signature City (Tronica City) Industrial Area Loni, Ghaziabad - Delhi NCR, Sector A7, Ghaziabad - 201102, Dist. Ghaziabad, Uttar Pradesh

double toggle oil crusher,double toggle jaw crusher manufacturer

Royal Oil Crusher constructed of heavy duty fabricated prime plate with reinforcing ribs.Our machine designed on principal of crushing without rubbing, with high impact pressure. The moving jaw compresses the feed ore against the stationary jaw, Double Toggle Oil Crusher, Double Toggle Jaw Crusher.The balanced heavy fly wheel allows crushing peaks on tough materials, which Suitable to crush hard, tough, abrasive material & overload high capacity. Our all machinery designed for Long life positive machine performance with higher capacity and with low maintenance & minimum power. Wear parts & internal parts are easier to replace. Configure for primary & secondary crushing.

2019 ROYAL JAW CRUSHER. Powered by : #1 Vinayak InfoSoft- Best SEO company India- Last Updated : 01-July-2021 [Vin.Y.R] | Crusher Plant Machine Supplier | Uttarakhand | Raipur | Chandigarh | Saharanpur | Udaipur | Mumbai | Delhi | Bangalore | Chennai | Crushing Plant || Crusher Machine Exporter in India