Modular toggle device for a jaw crusher

Abstract

The utility model discloses a modularization toggle plate device suitable for jaw crusher relates to mine crushing technical field, it includes toggle plate, the toggle plate middle part is equipped with the mounting hole, the toggle plate both ends are equipped with fixed groove, one pair of symmetry's first connecting hole is equipped with in fixed groove both sides wall, still include toggle plate head, the toggle plate head is 2, symmetrically sets up in toggle plate both ends, the toggle plate head includes toggle plate head body and center boss, the center boss can be engaged in fixed groove, the toggle plate head body outer end is equipped with transverse lubricating groove, first arc slot and second arc slot, transverse lubricating groove is parallel to the length direction of toggle plate head body, be provided with interval between first arc slot and second arc slot and be crossed with transverse lubricating groove simultaneously, the connecting department passes first connecting hole on toggle plate and second connecting hole on the toggle plate head in proper order for connecting locking toggle plate and toggle plate head, oil absorption layer fills in first through -hole, second through -hole, third through -hole, first connecting groove and second connecting groove, the utility model discloses reasonable in design, and the replacement cost is low, and the replacement efficiency is high, saves the manual work and time, prolongs the life.

Description

Technical Field

[0001] This utility model belongs to the field of mining crushing technology, and specifically relates to a modular toggle plate device suitable for jaw crushers. Background Technology

[0002] The toggle plate used in a jaw crusher, also known as the thrust plate, is typically a one-piece cast structure. In traditional jaw crushers, it serves to transmit crushing force, adjust the discharge opening size, and provide overload protection. Once installed, the one-piece toggle plate functions as an integral, non-separable component. Traditional jaw crushers use integral cast toggle plates, which integrate functions such as transmitting crushing force, adjusting the discharge opening, and overload protection. However, their "non-separable" structural design has significant drawbacks. The core problem is that, as a wear part, any localized wear or damage to the working surface of the toggle plate will lead to the scrapping of the entire component. This not only results in significant material waste but also significantly increases replacement costs due to its large weight and high price. Furthermore, the overall replacement process is time-consuming and labor-intensive, severely restricting the continuous operation efficiency and production benefits of the equipment. Therefore, it is essential to provide a modular toggle plate device suitable for jaw crushers that is rationally designed, has low replacement costs, high replacement efficiency, saves time and labor, and has a long service life. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a modular toggle plate device suitable for jaw crushers that is reasonably designed, has low replacement cost, high replacement efficiency, saves time and effort, and has a long service life.

[0004] The purpose of this utility model is achieved as follows: A modular toggle plate device suitable for a jaw crusher, comprising a toggle plate with a mounting hole in the middle and fixing grooves at both ends. Symmetrical first connecting holes are formed on the side walls of the fixing grooves. It also includes two toggle plate heads, symmetrically arranged at both ends of the toggle plate. Each toggle plate head includes a toggle plate head body and a central boss. The central boss is perpendicular to the toggle plate head body, with one end positioned at the center of the toggle plate head body. A second connecting hole corresponding to the position of the first connecting hole is formed on the central boss, which can engage with the fixing groove. Two third through holes are vertically formed on the toggle plate head, penetrating the central boss and the toggle plate head body sequentially from bottom to top. The toggle plate head body contains the first through hole, the second through hole, the first connecting groove, and the second connecting groove. Two through holes are parallel to each other and extend through the length of the elbow plate head body. The first connecting groove and the second connecting groove are perpendicular to the first through hole and the second through hole and are spaced apart from each other. The first connecting groove and the second connecting groove are respectively connected to the first through hole and the second through hole. The third through hole is connected to the first connecting groove and the second connecting groove. A transverse lubrication groove, a first arc groove and a second arc groove are provided at the outer end of the elbow plate head body. The transverse lubrication groove is parallel to the length of the elbow plate head body. The first arc groove and the second arc groove are spaced apart and intersect with the transverse lubrication groove. The first arc groove and the second arc groove are connected to the third through hole. The connecting part passes through the first connecting hole on the elbow plate and the second connecting hole on the elbow plate head in sequence to connect and lock the elbow plate and the elbow plate head. The oil-absorbing layer fills the first through hole, the second through hole, the third through hole, the first connecting groove and the second connecting groove to store and release lubricating oil.

[0005] Preferably, the outer end face of the elbow plate head body is spherical, and the included angle between the first arc groove, the second arc groove and the transverse lubrication groove is 60° to 120°.

[0006] Preferably, the cross-sections of the first arc groove, the second arc groove, and the transverse lubrication groove are all arc-shaped, with an arc angle of 60° to 90°.

[0007] Preferably, the connecting part includes a cover, a connecting post, a threaded post, a disc spring, and a nut. One end of the connecting post is fixed with the cover, and the other end of the connecting post is fixed with the threaded post. The nut is threadedly connected to the threaded post.

[0008] Preferably, the cross-sections of the connecting post, the first connecting hole, and the second connecting hole are all regular hexagonal structures with the same dimensions. The diameter of the inscribed circle of the cross-section of the connecting post is larger than the diameter of the threaded post. The disc spring is sleeved between the nut and the connecting post. The connecting post of the connecting part passes through the first connecting hole on the elbow plate and the second connecting hole on the elbow plate head to connect the elbow plate and the elbow plate head.

[0009] Preferably, the third through hole is perpendicularly connected to the middle of the first connecting groove, the second connecting groove, the first arc-shaped groove, and the second arc-shaped groove.

[0010] Preferably, a fixing post corresponding to the position of the third through hole is provided in the fixing groove, and the diameter of the fixing post is the same as the diameter of the third through hole.

[0011] Preferably, the oil-absorbing layer is an industrial-grade polyurethane foam.

[0012] The beneficial effects of this utility model are as follows: 1. The elbow plate and elbow plate head of this utility model are connected in a detachable manner. When any elbow plate head is worn and needs to be replaced, only the corresponding elbow plate head needs to be removed and a new elbow plate head needs to be replaced in time to start working. This solves the problem of material waste and high replacement cost caused by the traditional method of replacing an entire elbow plate when the local working surface is worn. It greatly improves the replacement efficiency and replacement time. At the same time, replacing only the elbow plate head can save manpower and reduce the replacement cost. 2. This utility model uses a hexagonal connecting column as the main connecting part to connect the elbow plate and the elbow plate head. It has a strong ability to bear bending moment and torque, can better resist complex alternating loads, and reduce the risk of fracture. Moreover, multiple sides provide more shear resistance surfaces, resulting in excellent shear resistance. The six sides fit with the inner wall of the connecting hole to prevent relative rotation and ensure accurate power transmission. The clear shape facilitates quick and accurate installation, ensures consistent positioning, improves assembly accuracy, and reduces vibration and wear. In terms of stress distribution, it can evenly disperse stress, avoid stress concentration, and improve fatigue life. The six sides of the connecting column can also adapt to multi-directional forces, effectively transmit and disperse forces in different directions, and withstand greater comprehensive loads. At the same time, the large contact area between the connecting column and the first and second connecting holes results in low pressure per unit area and less wear under the same pressure, which can also improve friction and enhance connection stability. 3. This utility model adopts an oil circuit structure in which a first through hole, a second through hole, a third through hole, a first connecting groove and a second connecting groove are set inside the elbow plate head body to form an interconnected oil circuit structure. When the elbow plate is working, the lubricating oil in the oil circuit will overflow into the lubricating groove formed by the transverse lubrication groove, the first arc groove and the second arc groove under the power of the elbow plate head, to lubricate the working surface of the elbow plate head, reduce the wear of the working surface of the elbow plate head, and greatly improve the service life of the elbow plate head. In summary, this utility model has a reasonable design, low replacement cost, high replacement efficiency, saves labor and time, and extends service life. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the structure of the elbow plate head of this utility model.

[0015] Figure 3 This is a cross-sectional schematic diagram of the elbow plate head of this utility model.

[0016] Figure 4 This is a three-dimensional structural diagram of the elbow plate of this utility model.

[0017] Figure 5 This is a cross-sectional schematic diagram of the elbow plate head, elbow plate and connecting part of this utility model.

[0018] Figure 6 This is a schematic diagram of the connecting part of this utility model.

[0019] In the figure: 1. Elbow plate 101. Mounting hole 102. Fixing groove 103. Fixing post 104. First connecting hole 2. Elbow plate head 201. Transverse lubrication groove 202. First arc groove 203. Second arc groove 204. First through hole 205. Elbow plate head body 206. Second connecting hole 207. Central boss 208. Second through hole 209. First connecting groove 210. Second connecting groove 211. Third through hole 3. Connecting part 301. Cover 302. Connecting post 303. Threaded post 304. Disc spring 305. Nut 4. Oil absorption layer. Detailed Implementation

[0020] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0021] like Figure 1-6As shown, a modular toggle plate device suitable for a jaw crusher includes a toggle plate 1 with a mounting hole 101 in the middle and fixing grooves 102 at both ends. Symmetrical first connecting holes 104 are formed on the side walls of the fixing grooves 102. The device also includes two toggle plate heads 2, symmetrically arranged at both ends of the toggle plate 1. Each toggle plate head 2 includes a toggle plate head body 205 and a central boss 207. The central boss 207 is perpendicular to the toggle plate head body 205, and one end of the central boss 207 is located at the center of the toggle plate head body 205. The central boss 207 has a second connecting hole 206 corresponding to the position of the first connecting hole 104. The central boss 207 can be engaged in the fixing groove 102. The elbow plate head 2 has two third through holes 211 in the vertical direction. The third through holes 211 pass through the central boss 207 and the elbow plate head body 205 from bottom to top. The elbow plate head body 205 has a first through hole 204, a second through hole 208, a first connecting groove 209 and a second connecting groove 210. The first through hole 204 and the second through hole 208 are parallel to each other and pass through the elbow plate head body 205. Along the length of the elbow plate head body 205, the first connecting groove 209 and the second connecting groove 210 are perpendicular to the first through hole 204 and the second through hole 208 and are spaced apart from each other. The first connecting groove 209 and the second connecting groove 210 communicate with the first through hole 204 and the second through hole 208, respectively. The third through hole 211 communicates with the first connecting groove 209 and the second connecting groove 210. A transverse lubrication groove 201, a first arc-shaped groove 202 and a second arc-shaped groove 203 are provided at the outer end of the elbow plate head body 205. The transverse lubrication groove 201 is parallel to the length of the elbow plate head body 205. In the direction, a gap is provided between the first arc groove 202 and the second arc groove 203 and they intersect with the transverse lubrication groove 201. The first arc groove 202 and the second arc groove 203 are connected to the third through hole 211. The connecting part 3 passes through the first connecting hole 104 on the elbow plate 1 and the second connecting hole 206 on the elbow plate head 2 in sequence, and is used to connect and lock the elbow plate 1 and the elbow plate head 2. The oil-absorbing layer 4 fills the first through hole 204, the second through hole 208, the third through hole 211, the first connecting groove 209 and the second connecting groove 210, and is used to store and release lubricating oil.

[0022] like Figure 2 , Figure 4 , Figure 5As shown, the first connecting hole 104 on the elbow plate head 2 corresponds one-to-one with the second connecting hole 206 on the central boss 207. This design facilitates the smooth installation of the connecting post 302 on the connecting part 3. At the same time, during use, the central boss 207 is engaged in the fixing groove 102, and the connecting post 302 on the connecting part 3 passes through the first connecting hole 104 at one end of the elbow plate 1, the second connecting hole 206 on the central boss 207, and the first connecting hole 104 at the other end of the elbow plate 1 in sequence. Then, the disc spring 304 is put into the threaded post 303, and the nut 305 is locked onto the threaded post 303, which greatly improves the replacement efficiency of the elbow plate head 2.

[0023] like Figure 1 , Figure 3 As shown, the first through hole 204 and the second through hole 208 are parallel to each other and extend through the length of the elbow plate head body 205. The oil-absorbing layer 4 is filled in the first through hole 204, the second through hole 208, the third through hole 211, the first connecting groove 209, and the second connecting groove 210. The first connecting groove 209 and the second connecting groove 210 are respectively connected to the first through hole 204 and the second through hole 208, and the third through hole 211 is connected to the first connecting groove 209 and the second connecting groove 210. This facilitates the injection of lubricating oil into the oil-absorbing layer 4 of the first through hole 204 and the second through hole 208 from the elbow plate head body 205. Specifically, a syringe or similar device can be used to inject lubricating oil into the oil-absorbing layer 4. The lubricating oil will enter and fill the first connecting groove 209, the second connecting groove 210, and the third through hole 211 through the first through hole 204 and the second through hole 208, greatly ensuring sufficient lubricating oil in the elbow plate head 2. During operation, this ensures sufficient lubrication of the working surface of the elbow plate head 2.

[0024] The outer end face of the elbow plate head body 205 is spherical, and the included angle between the first arc groove 202, the second arc groove 203 and the transverse lubrication groove 201 is 60° to 120°.

[0025] like Figure 1 As shown, the transverse lubrication groove 201 is parallel to the length direction of the elbow head body 205. There is a gap between the first arc groove 202 and the second arc groove 203. When the angle between the first arc groove 202, the second arc groove 203 and the lubrication groove is 90°, the first arc groove 202, the second arc groove 203 and the lubrication groove remain perpendicular. When the angle between the first arc groove 202, the second arc groove 203 and the lubrication groove is 60° or 120°, the first arc groove 202 and the second arc groove 203 are biased towards the leftmost or rightmost end of the working surface of the elbow head 2. In these two states, the area occupied by the first arc groove 202 and the second arc groove 203 on the working surface of the elbow head 2 increases, further increasing the coverage area of ​​the lubricating oil on the working surface of the elbow head 2 and enhancing the lubrication effect.

[0026] Among them, the cross-sections of the first arc groove 202, the second arc groove 203 and the transverse lubrication groove 201 are all arc-shaped with an arc angle of 60° to 90°. Within this angle range, the first arc groove 202 and the second arc groove 203 can store and continuously deliver sufficient lubricating medium to ensure the formation of a stable oil film between the working surfaces and minimize friction and wear. At the same time, the degree of weakening of the working surface strength of the elbow plate head 2 is controlled within an acceptable range, ensuring the structural integrity and durability of the elbow plate head 2 under high impact loads.

[0027] The connecting part 3 includes a cover 301, a connecting post 302, a threaded post 303, a disc spring 304, and a nut 305. One end of the connecting post 302 is fixed with the cover 301, and the other end of the connecting post 302 is fixed with the threaded post 303. The nut 305 is threadedly connected to the threaded post 303.

[0028] like Figure 6 As shown, the design of the cover 301 can limit the connection post 302, ensuring the locking function of the connection part 3. The disc spring 304 is used, and its core function is to transform the rigid connection into an elastic pre-tightening connection. Through its own elastic deformation, it continuously applies restoring force to compensate for the gap caused by vibration or wear, ensuring that the connection pre-tightening force never fails. At the same time, its spring characteristics can effectively absorb and buffer impact loads, significantly reduce dynamic stress peaks, and protect the threaded post 303 and nut 305. In addition, it can distribute the fastening pressure more evenly, reduce stress concentration, and thus comprehensively improve the reliability and fatigue life of the connection.

[0029] Among them, the cross-sections of the connecting post 302, the first connecting hole 104, and the second connecting hole 206 are all regular hexagonal structures with the same dimensions. The diameter of the inscribed circle of the cross-section of the connecting post 302 is larger than the diameter of the threaded post 303. The disc spring 304 is sleeved between the nut 305 and the connecting post 302. The connecting post 302 of the connecting part 3 passes through the first connecting hole 104 on the elbow plate 1 and the second connecting hole 206 on the elbow plate head 2 to connect the elbow plate 1 and the elbow plate head 2.

[0030] like Figure 5-6As shown, the diameter of the inscribed circle of the connecting post 302 is larger than the diameter of the threaded post 303. When the disc spring 304 is fitted onto the threaded post 303, the shoulder at the connection between the connecting post 302 and the threaded post 303 can axially limit the disc spring 304, providing strong support for the compression force of the disc spring 304 and ensuring the further effective locking of the nut 305. The cross-sections of the connecting post 302, the first connecting hole 104, and the second connecting hole 206 are all regular hexagonal structures with the same dimensions. The connecting part 3, with the hexagonal connecting post 302 as the main body, connects the elbow plate 1 and the elbow plate head 2. It has a strong ability to bear bending moment and torque, and can better resist complex alternating loads and reduce [the load]. The connection column 302 has a large contact area with the first connecting hole 104 and the second connecting hole 206, resulting in a high shear resistance and excellent shear performance. The six sides fit with the inner wall of the connecting hole to prevent relative rotation and ensure accurate power transmission. Its clear shape facilitates quick and accurate installation, ensures consistent positioning, improves assembly accuracy, and reduces vibration and wear. In terms of stress distribution, it can evenly disperse stress, avoid stress concentration, and improve fatigue life. The six sides of the connecting column 302 can also adapt to multi-directional forces, effectively transmit and disperse forces in different directions, and withstand greater comprehensive loads. At the same time, the large contact area between the connecting column 302 and the first connecting hole 104 and the second connecting hole 206 results in low pressure per unit area and less wear under the same pressure, and also increases friction to enhance connection stability.

[0031] The third through hole 211 is vertically connected to the middle of the first connecting groove 209, the second connecting groove 210, the first arc groove 202, and the second arc groove 203.

[0032] like Figure 1 , Figure 3 As shown, the third through hole 211 vertically connects the first connecting groove 209, the second connecting groove 210, the first arc-shaped groove 202, and the second arc-shaped groove 203, forming a mutually perpendicular grid-like internal network. When the elbow head 2 swings, the internal lubricating oil is subjected to centrifugal force. The mutually perpendicular channel network can more effectively throw the lubricating oil to the end of the third through hole 211, and the lubricating oil can fill the first arc-shaped groove 202, the second arc-shaped groove 203, and the transverse lubrication groove 201. Thus, during the swinging process of the elbow head 2, the lubricating oil will continuously fill the working surface of the elbow head 2, achieving lubrication of the working surface of the elbow head 2. At the same time, when the elbow head 2 swings, the working surface of the elbow head 2 will generate a lot of heat. This internal channel network filled with lubricating oil is like a built-in heat dissipation circulation system. The flow of lubricating oil in the channels can carry away the heat generated by the working surface and conduct it to the inside of the elbow head 2, which helps to reduce the working temperature of the friction pair, prevent the lubricating oil from failing due to overheating, and thus extend the service life of the entire component.

[0033] The fixing groove 102 is provided with a fixing post 103 corresponding to the position of the third through hole 211, and the diameter of the fixing post 103 is the same as the diameter of the third through hole 211.

[0034] like Figure 2 , Figure 4 As shown, when connecting the elbow plate head 2 and the elbow plate 1, the central boss 207 on the elbow plate head 2 is aligned with the fixing groove 102 on the elbow plate 1, and then the central boss 207 is inserted into the fixing groove 102. At the same time, the third through hole 211 at the bottom of the central boss 207 is aligned with the fixing post 103 in the fixing groove 102 of the elbow plate 1, so that the fixing post 103 is inserted into the third through hole 211, completing the initial positioning and installation of the elbow plate head 2. The use of the fixing post 103 can, on the one hand, fix and limit the elbow plate head 2, which facilitates the installation and locking of the connecting part 3. On the other hand, after the fixing post 103 is inserted into the third through hole 211, it can squeeze the oil absorption layer 4 in the third through hole 211 and form a simple oil film seal. During the operation, it can promote the oil to flow further towards the working surface of the elbow plate head 2, avoid the leakage of lubricating oil, and ensure sufficient lubrication effect.

[0035] like Figure 5 As shown, the oil-absorbing layer 4 is made of industrial-grade polyurethane sponge. Its porous structure locks in the lubricating oil through capillary action and releases it as needed according to the operating temperature and pressure, ensuring that the friction pair continuously obtains a fresh oil film and greatly extending the lubrication cycle. At the same time, the sponge itself acts as a physical barrier, which can tightly wrap the fixed column 103 under pressure to form a reliable elastic seal, preventing lubricating oil leakage and effectively blocking the intrusion of external contaminants. Its outer layer can also adsorb and filter impurities, significantly improving the system's fault tolerance. Ultimately, this results in a significant reduction in maintenance frequency and significantly improves the reliability and economy of the equipment under harsh operating conditions.

[0036] The working principle of this utility model is as follows: In use, this invention involves first filling industrial-grade polyurethane foam in sections into the first through hole 204, the second through hole 208, the first connecting groove 209, the second connecting groove 210, and the third through hole 211. Then, the central boss 207 of the elbow plate head 2 is inserted into the corresponding fixing grooves 102 on both sides of the elbow plate 1, and the third through hole 211 is inserted into the fixing post 103. Finally, the connecting post 302 on the connecting part 3 passes sequentially through the first connecting hole 104 at one end of the elbow plate 1, the second connecting hole 206 on the central boss 207, and the elbow plate 1. The first connecting hole 104 at the other end is then inserted, and the disc spring 304 is fitted onto the threaded post 303. The nut 305 is then locked onto the threaded post 303, thus completing the secure locking of the elbow head 2 and the elbow plate 1. Then, lubricating oil is injected through the first through hole 204 and the second through hole 208 on both sides of the elbow head 2 into the polyurethane foam and filled it completely. Finally, the elbow plate device can be installed into the jaw crusher and put into operation. The installation method of the elbow plate 1 and the normal operation method of the jaw crusher are the same as those of the existing technology, and will not be described in detail here.

[0037] In summary, this utility model has a reasonable design, low replacement cost, high replacement efficiency, saves labor and time, and extends service life.

[0038] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A modular toggle plate device suitable for a jaw crusher, comprising a toggle plate (1), wherein the toggle plate (1) has a mounting hole (101) in the middle, characterized in that: The elbow plate (1) has fixing grooves (102) at both ends, and the fixing grooves (102) have symmetrical first connecting holes (104) on both sides of each side wall. It also includes... Elbow plate head (2), there are two elbow plate heads (2), symmetrically arranged at both ends of the elbow plate (1). The elbow plate head (2) includes an elbow plate head body (205) and a central boss (207). The central boss (207) is perpendicular to the elbow plate head body (205). One end of the central boss (207) is located at the center of the elbow plate head body (205). A second connecting hole (206) corresponding to the position of the first connecting hole (104) is opened on the central boss (207). The central boss (207) can be engaged in the fixing groove (102). The elbow plate head (2) has two third through holes (211) in the vertical direction. The third through holes (211) pass through the central boss (207) and the elbow plate head body (205) from bottom to top. The elbow plate head body (205) has a first through hole (204), a second through hole (208), a first connecting groove (209), and a second connecting groove (210) inside. The first through hole (204) and the second through hole (210) are connected to each other. The holes (208) are parallel to each other and extend through the length of the elbow plate head body (205). The first connecting groove (209) and the second connecting groove (210) are perpendicular to the first through hole (204) and the second through hole (208) and are spaced apart from each other. The first connecting groove (209) and the second connecting groove (210) are connected to the first through hole (204) and the second through hole (208) respectively. The third through hole (211) is connected to the first connecting groove (209) and the second connecting groove (210). The elbow plate head body (205) is connected to the third through hole (211). A transverse lubrication groove (201), a first arc-shaped groove (202), and a second arc-shaped groove (203) are provided at the outer end of the elbow plate head body (205). The transverse lubrication groove (201) is parallel to the length direction of the elbow plate head body (205). A gap is provided between the first arc-shaped groove (202) and the second arc-shaped groove (203), and they intersect with the transverse lubrication groove (201). The first arc-shaped groove (202) and the second arc-shaped groove (203) are connected to the third through hole (211). The connecting part (3) passes through the first connecting hole (104) on the elbow plate (1) and the second connecting hole (206) on the elbow plate head (2) in sequence, and is used to connect and lock the elbow plate (1) and the elbow plate head (2). An oil-absorbing layer (4) is filled in the first through hole (204), the second through hole (208), the third through hole (211), the first connecting groove (209), and the second connecting groove (210) for storing and releasing lubricating oil.

2. A modular toggle plate device suitable for a jaw crusher according to claim 1, characterized in that: The outer end face of the elbow plate head body (205) is spherical, and the included angle between the first arc groove (202), the second arc groove (203) and the transverse lubrication groove (201) is 60° to 120°.

3. A modular toggle plate device suitable for a jaw crusher according to claim 2, characterized in that: The cross-sections of the first arc groove (202), the second arc groove (203), and the transverse lubrication groove (201) are all arc-shaped, with an arc angle of 60° to 90°.

4. A modular toggle plate device suitable for a jaw crusher according to claim 1, characterized in that: The connecting part (3) includes a cover (301), a connecting post (302), a threaded post (303), a disc spring (304), and a nut (305). One end of the connecting post (302) is fixed with the cover (301), and the other end of the connecting post (302) is fixed with the threaded post (303). The nut (305) is threadedly connected to the threaded post (303).

5. A modular toggle plate device suitable for a jaw crusher according to claim 4, characterized in that: The cross-sections of the connecting post (302), the first connecting hole (104), and the second connecting hole (206) are all regular hexagonal structures with the same dimensions. The diameter of the inscribed circle of the cross-section of the connecting post (302) is larger than the diameter of the threaded post (303). The disc spring (304) is sleeved between the nut (305) and the connecting post (302). The connecting post (302) of the connecting part (3) passes through the first connecting hole (104) on the elbow plate (1) and the second connecting hole (206) on the elbow plate head (2) to connect the elbow plate (1) and the elbow plate head (2).

6. A modular toggle plate device suitable for a jaw crusher according to claim 1, characterized in that: The third through hole (211) is vertically connected to the middle of the first connecting groove (209), the second connecting groove (210), the first arc groove (202), and the second arc groove (203).

7. A modular toggle plate device suitable for a jaw crusher according to claim 1, characterized in that: The fixing groove (102) is provided with a fixing post (103) corresponding to the position of the third through hole (211), and the diameter of the fixing post (103) is the same as the diameter of the third through hole (211).

8. A modular toggle plate device suitable for a jaw crusher according to claim 1, characterized in that: The oil-absorbing layer (4) is an industrial-grade polyurethane sponge.

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