High-efficiency pig face bone removing device

Abstract

This application relates to the field of pig face deboning technology, and discloses a high-efficiency pig face deboning device, including a frame, a drive assembly on the top of the frame, and a separation assembly inside the frame. The separation assembly includes a clamping rod, a rotating shaft rotatably connected inside the clamping rod, and another clamping rod rotatably connected to the outer wall of the rotating shaft. A conical spike is fixedly connected to one side of the clamping rod, a conical column is fixedly connected to one side of the clamping rod, and a conical column is fixedly connected to one side of the clamping rod. A limiting assembly is provided on the top of the frame. The clamping rods clamp the lower jaw of the pig face, with the clamping rod being limited by the conical spike, and the clamping rod being limited by the conical columns. The output of a motor drives a winch to rotate, achieving the effect of easily separating the upper and lower jaws of the pig skull. This solves the problem of inconvenience caused by manual operation during pig face deboning and improves the convenience of pig face deboning.

Description

Technical Field

[0001] This utility model relates to the field of pig face deboning technology, specifically a high-efficiency pig face deboning device. Background Technology

[0002] Pig heads are a common part of fresh meat processing. Their internal structure is complex, with bones and meat tightly integrated. Traditional deboning processes rely on manual hand-held knives for separation, which is labor-intensive and inefficient. To improve the processing efficiency of pig faces and ensure product consistency and safety, the industry has gradually begun to develop auxiliary devices for deboning pig faces to achieve mechanized or semi-automated cutting processes, thereby replacing repetitive manual labor.

[0003] In existing technologies, mechanical support structures are often combined with manual or semi-automatic cutting mechanisms to complete the deboning operation. Typically, the target position is fixed by a base support and a limiting mechanism, and then the flesh and bones are separated by manual blades or pneumatic shears. The structural design mainly focuses on fixed structures and unidirectional cutting structures. Some devices also incorporate electric actuators to assist the cutting blade, but the overall process still relies on human experience to judge positioning and make repeated adjustments, resulting in limited efficiency and accuracy.

[0004] However, there is still significant room for improvement in the aforementioned existing technologies. For example, in actual deboning processes, due to the unique structure of the pig's lower jaw, existing deboning devices often cannot achieve coordinated clamping and separation actions. This necessitates continuous manual clamping and assistance during deboning, which is not only inefficient but also poses certain safety hazards. Therefore, achieving stable positioning of the pig's facial structure and efficient mechanical separation has become a key technical issue for improving the efficiency and convenience of pig face deboning. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a highly efficient pig face deboning device, which solves the problem of the inconvenience of manual operation during pig face deboning.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A high-efficiency pig face deboning device includes a frame, a drive assembly on the top of the frame, and a separation assembly inside the frame.

[0008] The separation assembly includes a clamping rod 1, a rotating shaft 2 rotatably connected inside the clamping rod 1, a clamping rod 2 rotatably connected to the outer wall of the rotating shaft 2, a conical spike fixedly connected to one side of the clamping rod 1, a conical column 1 fixedly connected to one side of the clamping rod 2, a conical column 2 fixedly connected to one side of the clamping rod 2, and a limit assembly provided at the top of the frame.

[0009] Furthermore, the drive assembly includes a motor, the outer wall of which is fixedly connected to the inside of the frame, and a winch is fixedly connected to the output end of the motor, with one end of the winch connected to a clamping rod.

[0010] Furthermore, the limiting component includes a base, a frame is fixedly connected to the bottom of the base, a boss is fixedly connected to the top of the base, a baffle is fixedly connected to one side of the boss, an extension rod is fixedly connected to the other side of the boss, a stop bar is fixedly connected to the top of the extension rod, and a limiting plate is fixedly connected to the top of the base.

[0011] Furthermore, a bracket is fixedly connected to the top of the frame, and a rotating shaft is rotatably connected inside the bracket. A W-shaped pressure plate is fixedly connected to one end of the rotating shaft, a toothed block is provided on one side of the W-shaped pressure plate, and a pressure rod is fixedly connected to the other end of the rotating shaft.

[0012] Furthermore, a limiting post is fixedly connected to the top of the frame, and a sliding sleeve is slidably connected to the outer wall of the limiting post.

[0013] Furthermore, a connecting plate is fixedly connected to the outer wall of the sliding sleeve, and a fixing plate is fixedly connected to one side of the connecting plate.

[0014] Furthermore, a serrated strip is fixedly connected to the bottom of the fixed plate, a V-shaped plate is fixedly connected to the bottom of the fixed plate, and a cutting blade is fixedly connected to the bottom of the fixed plate.

[0015] Furthermore, a second motor is fixedly connected inside the frame, a gearbox is fixedly connected to the output end of the second motor, the input end of the gearbox is connected to the output end of the second motor, and a first sprocket is fixedly connected to the output end of the gearbox.

[0016] Furthermore, a rotating shaft three is rotatably connected inside the frame, and a sprocket two is fixedly connected to the outer wall of the rotating shaft three. A chain is provided on the outer wall of the sprocket two and the outer wall of the sprocket one. A connecting rod one is fixedly connected to both ends of the rotating shaft three. A connecting rod two is rotatably connected to one end of the connecting rod one, and a connecting rod two is rotatably connected to the outer wall of the sliding sleeve.

[0017] This invention provides a highly efficient device and method for deboning pig faces. It has the following beneficial effects:

[0018] 1. This utility model involves clamping rod one and clamping rod two on the lower jaw of a pig's face. Then, clamping rod one is limited to the pig's face by a conical spike, and clamping rod two is limited to the pig's face by conical column one and conical column two. Then, the output end of motor one drives the winch to rotate, which achieves the effect of easily separating the upper and lower jaws of the pig's skull. This solves the problem that manual operation is inconvenient when deboning the pig's face and improves the convenience of deboning the pig's face.

[0019] 2. In this utility model, when the fixing plate descends, the serrated strip limits the pig's lips, and the V-shaped plate is embedded in the eye socket on the pig's skull to fix it. Then, the cutting blade separates the pig's skull from the meat, achieving the effect of simultaneous descent of the two blades to position and cut the pig's face. This solves the problem of the tedious process of removing the pig's skull and meat, and improves the practicality of deboning the pig's face.

[0020] 3. In this utility model, the rotating shaft drives the W-shaped pressure plate to press down and fix the pig's head. The W-shaped pressure plate and the pig's head are prevented from slipping by toothed blocks. Then the pig's head is supported by the protrusion on the base, and the two sides are limited by limiting plates. The head is limited by a baffle, and the tail is limited by a stop bar. This achieves the effect of positioning and limiting the pig's face, solves the problem of Julian's inconvenience in positioning when deboning the pig's skull, and improves the versatility of the pig face deboning device. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present utility model;

[0022] Figure 2 This is a schematic diagram of the sliding sleeve structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the fixing plate structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the cutting blade structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the base structure of this utility model;

[0026] Figure 6 This is a schematic diagram of the frame structure of this utility model;

[0027] Figure 7 This is a schematic diagram of the clamping rod structure of this utility model;

[0028] Figure 8 This is a schematic diagram of the limiting column structure of this utility model;

[0029] Figure 9 This is a schematic diagram of the connecting rod structure of this utility model.

[0030] The components are as follows: 1. Frame; 2. Base; 3. Boss; 4. Limiting plate; 5. Baffle; 6. Extension rod; 7. Stop bar; 8. Bracket; 9. Rotating shaft one; 10. W-shaped pressure plate; 11. Tooth block; 12. Pressure rod; 13. Limiting post; 14. Sliding sleeve; 15. Fixing plate; 16. Connecting plate; 17. Sawtooth strip; 18. V-mouth plate; 19. Cutting knife; 20. Frame; 21. Motor one; 22. Winch; 23. Clamping rod one; 24. Conical spike; 25. Clamping rod two; 26. Conical column one; 27. Conical column two; 28. Rotating shaft two; 29. ​​Motor two; 30. Gearbox; 31. Rotating shaft three; 32. Sprocket one; 33. Sprocket two; 34. Chain; 35. Connecting rod one; 36. Connecting rod two. Detailed Implementation

[0031] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] Example 1:

[0033] Please see the appendix Figure 1 Appendix Figure 2 Appendix Figure 6 and attached Figure 7 This utility model provides an efficient pig face deboning device, including a frame 1, a frame 20 fixedly connected to the top of the frame 1, a drive component on the top of the frame 20, and a separation component inside the frame 20.

[0034] The separation assembly includes a clamping rod 23, a rotating shaft 28 is rotatably connected inside the clamping rod 23, a clamping rod 25 is rotatably connected to the outer wall of the rotating shaft 28, a conical spike 24 is fixedly connected to one side of the clamping rod 23, a conical column 26 is fixedly connected to one side of the clamping rod 25, a conical column 27 is fixedly connected to one side of the clamping rod 25, a limit assembly is provided at the top of the frame 1, and the drive assembly includes a motor 21, the outer wall of the motor 21 is fixedly connected to the inside of the frame 20, a winch 22 is fixedly connected to the output end of the motor 21, and one end of the winch 22 is connected to the clamping rod 23.

[0035] Specifically, the frame 1 is used to support the overall structure and ensure the stability of the equipment operation. A frame 20 is fixedly connected to the top of the frame 1. The frame 20 is used to install and position the upper functional components and provide a structural support foundation. A drive component is set on the top of the frame 20 to provide power output for the deboning process. A separation component is set inside the frame 20 to realize the separation operation of the pig's facial bones from the meat.

[0036] The separation assembly includes a clamping rod 23 for clamping one side of the pig's lower jaw. A rotating shaft 28 is rotatably connected inside the clamping rod 23, serving as a rotatable connection point between the clamping rods 23 and 25, facilitating synchronized opening and closing for clamping. The outer wall of the rotating shaft 28 is rotatably connected to the clamping rod 25, which clamps the other side of the pig's lower jaw. A conical spike 24 is fixedly connected to one side of the clamping rod 23; the spike 24 has a conical structure and is used to pierce the soft tissue of the pig's face to enhance... To ensure stability and prevent slippage, a cone column 26 is fixedly connected to one side of clamping rod 25. The cone column 26 works with the cone spike 24 to form a symmetrical limiting structure to provide multi-point support. A cone column 27 is fixedly connected to one side of clamping rod 25. The cone column 27 and cone column 26 are arranged at intervals and work together at different positions of the pig face structure to improve clamping effect and adaptability. A limiting component is set at the top of the frame 1. The limiting component is used to initially position the pig face to ensure that the separation component operates in the accurate position.

[0037] The drive assembly includes a motor 21, which provides rotational driving force. Its outer wall is fixedly connected inside the frame 20 to ensure the stability of motor operation and the reliability of transmission. A winch 22 is fixedly connected to the output end of the motor 21. The winch 22 converts the rotational motion output by the motor into traction power. One end of the winch 22 is connected to a clamping rod 23. The traction action of the winch 22 drives the clamping rod 23 to rotate and clamp, thereby driving the clamping rod 23 and the clamping rod 25 to move closer together synchronously, clamping the pig's face and realizing the mechanical action of separating the upper and lower jaws.

[0038] Please see the appendix Figure 5 The limiting component includes a base 2, a frame 1 is fixedly connected to the bottom of the base 2, a boss 3 is fixedly connected to the top of the base 2, a baffle 5 is fixedly connected to one side of the boss 3, an extension rod 6 is fixedly connected to the other side of the boss 3, a stop bar 7 is fixedly connected to the top of the extension rod 6, a limiting plate 4 is fixedly connected to the top of the base 2, a bracket 8 is fixedly connected to the top of the frame 1, a rotating shaft 9 is rotatably connected inside the bracket 8, a W-shaped pressure plate 10 is fixedly connected to one end of the rotating shaft 9, a toothed block 11 is provided on one side of the W-shaped pressure plate 10, and a pressure rod 12 is fixedly connected to the other end of the rotating shaft 9.

[0039] Specifically, the limiting component includes a base 2, which supports the entire limiting structure, providing stable foundation support and ensuring that the structure does not shift or loosen during use; a frame 1 is fixedly connected to the bottom of the base 2, which serves as the main support for the entire machine, providing a stable connection for the base 2 and other upper structures, and improving the structural rigidity and load-bearing capacity of the overall device; a boss 3 is fixedly connected to the top of the base 2, which serves as a support component to support the bottom of the pig's head, keeping it in a horizontal and stable state during operation and preventing the pig's head from sinking or shifting.

[0040] A baffle 5 is fixedly connected to one side of the boss 3. The baffle 5 is used to limit the displacement of the pig head in the lateral movement direction, and plays a lateral limiting role to ensure that the pig head is fixed in position during deboning or cutting operations. An extension rod 6 is fixedly connected to the other side of the boss 3. The extension rod 6 is used to expand the length space of the support structure to accommodate pig heads of different sizes and to limit the rear side. A stop rod 7 is fixedly connected to the top of the extension rod 6. The stop rod 7 cooperates with the baffle 5 to limit the rear of the pig head and prevent it from sliding backward during operation.

[0041] A limiting plate 4 is fixedly connected to the top of the base 2. The limiting plate 4 is mainly used to restrict the relative movement of the pig's head area. The pig's head is stably positioned by the upper pressing method, which effectively avoids the problem of front-end slippage. A bracket 8 is fixedly connected to the top of the frame 1. The bracket 8 is used to install rotating parts, provide a reliable rotating support foundation for the rotating shaft 9, and enhance the overall integrity of the machine through the fixed connection. The rotating shaft 9 is rotatably connected inside the bracket 8. The rotating shaft 9 serves as the transmission shaft of the W-shaped pressure plate 10 and is used to drive it to perform up and down pressing actions to ensure the dynamic response of the limiting function.

[0042] One end of the rotating shaft 9 is fixedly connected to a W-shaped pressure plate 10. The W-shaped pressure plate 10 has a multi-bend structure, and its pressing part can make multiple contacts with the surface of the pig's head. It is used to directional limit the pig's head from above and prevent it from shaking. A toothed block 11 is provided on one side of the W-shaped pressure plate 10. The toothed block 11 serves as an anti-slip structure and can fit into the surface of the pig's head to enhance the friction between the plate and the pig's head during the limiting process, improve the fixing effect, and prevent slippage during operation. The other end of the rotating shaft 9 is fixedly connected to a pressure rod 12. The pressure rod 12 is an operating component. Manual or power device can drive the rotating shaft 9 to rotate through the pressure rod 12, thereby controlling the pressing or releasing of the W-shaped pressure plate 10, realizing the quick adjustment of the limiting component and the convenience of operation.

[0043] Please see the appendix Figure 3 Appendix Figure 4 Appendix Figure 8 and attached Figure 9A limit post 13 is fixedly connected to the top of the frame 1. A sliding sleeve 14 is slidably connected to the outer wall of the limit post 13. A connecting plate 16 is fixedly connected to the outer wall of the sliding sleeve 14. A fixing plate 15 is fixedly connected to one side of the connecting plate 16. A serrated strip 17 is fixedly connected to the bottom of the fixing plate 15. A V-mouth plate 18 is fixedly connected to the bottom of the fixing plate 15. A cutting blade 19 is fixedly connected to the bottom of the fixing plate 1. A second motor 29 is fixedly connected inside the frame 1. A speed reducer is fixedly connected to the output end of the second motor 29. The input end of the gearbox 30 is connected to the output end of the motor 29. The output end of the gearbox 30 is fixedly connected to the sprocket 32. The internal frame 1 is rotatably connected to the shaft 31. The outer wall of the shaft 31 is fixedly connected to the sprocket 23. The outer walls of the sprocket 233 and the sprocket 132 are provided with a chain 34. Both ends of the shaft 31 are fixedly connected to the connecting rod 15. One end of the connecting rod 15 is rotatably connected to the connecting rod 26. One end of the connecting rod 26 is rotatably connected to the outer wall of the sliding sleeve 14.

[0044] Specifically, a limiting post 13 is fixedly connected to the top of the frame 1. The limiting post 13 serves as a vertical guide structure to guide the sliding sleeve 14, ensuring the accuracy of vertical linear motion during the sliding process and preventing deviation or jamming. The sliding sleeve 14 is slidably connected to the outer wall of the limiting post 13. The sliding sleeve 14 serves as a connecting mechanism between the load-bearing and transmission components and can slide up and down along the limiting post 13 to realize the lifting and lowering action of the tool component.

[0045] A connecting plate 16 is fixedly connected to the outer wall of the sliding sleeve 14. The connecting plate 16 is used to connect the sliding sleeve 14 and the fixed plate 15, and to transmit the displacement of the sliding sleeve 14 to the fixed plate 15 to ensure that the up and down movements are synchronized. A fixed plate 15 is fixedly connected to one side of the connecting plate 16. The fixed plate 15 serves as the mounting base for the tool and is used to support and fix multiple cutting components to ensure their relative position is stable.

[0046] A serrated strip 17 is fixedly connected to the bottom of the fixed plate 15. The serrated strip 17 is a limiting component used to limit and clamp the pig's lips during descent, preventing the pig's head from shifting position during operation. A V-shaped groove plate 18 is fixedly connected to the bottom of the fixed plate 15. The V-shaped groove plate 18 has a V-shaped groove structure, which is easy to insert into the pig's eye socket to achieve precise positioning, ensuring cutting accuracy and stability. A cutting blade 19 is fixedly connected to the bottom of the fixed plate 15. The cutting blade 19 is used to separate the pig's skull from the muscle tissue. Its installation at the bottom of the fixed plate 15 ensures that it moves synchronously with the positioning component, improving operation efficiency.

[0047] Motor 29 is fixedly connected inside the frame 1. Motor 29 serves as the main drive source, providing rotational power to drive the entire separation system. A gearbox 30 is fixedly connected to the output end of motor 29. Gearbox 30 is used to reduce the high speed of the motor output to adapt it to the working speed and torque requirements of the chain drive system.

[0048] The input end of the gearbox 30 is connected to the output end of the motor 29 to form a power transmission link, realizing the effective transmission of power output; the output end of the gearbox 30 is fixedly connected to the sprocket 32, which serves as the driving sprocket and is used to transmit the rotational power after speed change to the chain 34; the frame 1 is rotatably connected to the shaft 31, which serves as the driven transmission shaft and rotates under the drive of the sprocket, thereby driving the linkage mechanism to run;

[0049] A sprocket 2 33 is fixedly connected to the outer wall of the rotating shaft 31. The sprocket 2 33 acts as a driven sprocket and is synchronously driven by the chain 34 between it and the sprocket 1 32 to realize the power transmission between the two sprockets. The outer walls of the sprocket 2 33 and the sprocket 1 32 are provided with a chain 34. The chain 34 is a closed transmission chain used to transmit rotational motion and realize the overall synchronous drive function.

[0050] Both ends of the rotating shaft 31 are fixedly connected to connecting rod 35. Connecting rod 35 reciprocates under the rotation of rotating shaft 31, which is used to convert the rotational motion into linear reciprocating motion. Connecting rod 36 is rotatably connected to one end of connecting rod 35. Connecting rod 36 is rotatably connected to the outer wall of sliding sleeve 14, forming the terminal execution component of the sliding mechanism. Through the cooperation of connecting rod 35 and connecting rod 36, the synchronous lifting and lowering action of sliding sleeve 14 and connected tool components is realized, thereby improving the overall cutting efficiency and stability of the equipment.

[0051] Working principle: When using this high-efficiency pig face deboning device, first place the pig head on the top of the base, then step on the pressure bar to drive the rotating shaft to rotate, and then the rotating shaft drives the W-shaped pressure plate to press down and fix the pig head. The W-shaped pressure plate and the pig head are prevented from slipping by toothed blocks. Then the pig head is supported by the protrusions on the base, the sides are limited by the limiting plates, the head is limited by the baffle, and the tail is limited by the baffle, thus achieving the effect of positioning and limiting the pig face.

[0052] When separating the pig skull, clamp rod one and clamp rod two are first clamped on the lower jaw of the pig's face. Then, clamp rod one is limited to the pig's face by a cone, and clamp rod two is limited to the pig's face by cone column one and cone column two. Then, the output end of motor one drives the winch to rotate. The winch and clamp rod one are wound up and lifted by a steel cable, thereby separating the upper and lower jaws of the pig skull, achieving the effect of facilitating the separation of the upper and lower jaws of the pig skull.

[0053] When separating the pig's skull from the meat, the output end of motor two is connected to the input end of the gearbox. The gearbox increases the torque of motor two, and then the output end of the gearbox drives sprocket two to rotate through sprocket one and chain. Sprocket two drives shaft three to rotate, and then shaft three drives connecting rod one to rotate. One end of connecting rod one drives the sliding sleeve to slide up and down on the outer wall of the limiting post through connecting rod two. The sliding sleeve is connected to the fixing plate through a connecting plate. When the fixing plate descends, it limits the pig's lips through the serrated strip. The V-mouth plate is embedded in the eye socket on the pig's skull to fix it. Then the cutting knife separates the pig's skull from the meat, achieving the effect of simultaneous descent of the two blades to position and cut the pig's face.

[0054] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency pig face bone removing device comprising a rack (1), characterized in that, The top of the frame (1) is fixedly connected to a frame (20), the top of the frame (20) is provided with a drive component, and the inside of the frame (20) is provided with a separation component; The separation assembly includes a clamping rod (23), a rotating shaft (28) is rotatably connected inside the clamping rod (23), a clamping rod (25) is rotatably connected to the outer wall of the rotating shaft (28), a conical spike (24) is fixedly connected to one side of the clamping rod (23), a conical column (26) is fixedly connected to one side of the clamping rod (25), a conical column (27) is fixedly connected to one side of the clamping rod (25), and a limit assembly is provided on the top of the frame (1).

2. The high-efficiency pig face bone removing device according to claim 1, characterized in that, The drive assembly includes a motor (21), the outer wall of which is fixedly connected to the inside of the frame (20), and a winch (22) is fixedly connected to the output end of the motor (21), one end of which is connected to a clamping rod (23).

3. The high-efficiency pig face deboning device according to claim 1, characterized in that, The limiting component includes a base (2), a frame (1) is fixedly connected to the bottom of the base (2), a boss (3) is fixedly connected to the top of the base (2), a baffle (5) is fixedly connected to one side of the boss (3), an extension rod (6) is fixedly connected to the other side of the boss (3), a stop bar (7) is fixedly connected to the top of the extension rod (6), and a limiting plate (4) is fixedly connected to the top of the base (2).

4. The efficient pig face deboning device according to claim 1, characterized in that, The top of the frame (1) is fixedly connected to a bracket (8), and a rotating shaft (9) is rotatably connected inside the bracket (8). A W-shaped pressure plate (10) is fixedly connected to one end of the rotating shaft (9), and a toothed block (11) is provided on one side of the W-shaped pressure plate (10). A pressure rod (12) is fixedly connected to the other end of the rotating shaft (9).

5. The efficient pig face deboning device according to claim 1, characterized in that, The top of the frame (1) is fixedly connected to a limiting post (13), and a sliding sleeve (14) is slidably connected to the outer wall of the limiting post (13).

6. The efficient pig face deboning device according to claim 5, characterized in that, A connecting plate (16) is fixedly connected to the outer wall of the sliding sleeve (14), and a fixing plate (15) is fixedly connected to one side of the connecting plate (16).

7. The efficient pig face deboning device according to claim 6, characterized in that, A serrated strip (17) is fixedly connected to the bottom of the fixed plate (15), a V-shaped plate (18) is fixedly connected to the bottom of the fixed plate (15), and a cutting blade (19) is fixedly connected to the bottom of the fixed plate (15).

8. The efficient pig face deboning device according to claim 1, characterized in that, The frame (1) is fixedly connected to a second motor (29), and the output end of the second motor (29) is fixedly connected to a gearbox (30). The input end of the gearbox (30) is connected to the output end of the second motor (29), and the output end of the gearbox (30) is fixedly connected to a first sprocket (32).

9. The efficient pig face deboning device according to claim 1, characterized in that, The frame (1) is rotatably connected to a rotating shaft three (31). A sprocket two (33) is fixedly connected to the outer wall of the rotating shaft three (31). A chain (34) is provided on the outer wall of the sprocket two (33) and the sprocket one (32). A connecting rod one (35) is fixedly connected to both ends of the rotating shaft three (31). A connecting rod two (36) is rotatably connected to one end of the connecting rod one (35). One end of the connecting rod two (36) is rotatably connected to the outer wall of the sliding sleeve (14).

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