A crusher for recycling OBP plastic fishing nets

Abstract

The invention discloses a crusher for recycling OBP plastic fishing nets, comprising a frame and a dust collecting assembly, and a crushing device and a dust removing device arranged on the top of the frame; the crushing device comprises a crushing box with a first dust removing port and a second dust removing port; the dust removing device comprises a dust removing box with a first dust removing chamber and a second dust removing chamber; a first piston block is slidably arranged in the first dust removing chamber, a second piston block is slidably arranged in the second dust removing chamber, the first piston block is transmission-connected with the second piston block, so that the first piston block and the second piston block synchronously move in opposite directions; when the effective volume of the first dust removing chamber increases, the first dust removing chamber is communicated with the crushing box through the first dust removing port, and the second dust removing chamber is communicated with the dust collecting assembly; thereby effectively preventing dust from being dispersed into a working environment during the crushing process of the OBP plastic fishing net, reducing environmental pollution caused by dust, and thus reducing the impact of dust on the health of workers.

Description

Technical Field

[0001] The invention relates to the technical field of fishing net recycling, in particular to a crusher for recycling OBP plastic fishing nets. Background Art

[0002] With the rapid development of the global fishery, plastic fishing nets are widely used in various fishing activities due to their durability, lightness and low cost. However, used plastic fishing nets have caused serious pollution to the marine environment and affected the health of the marine ecosystem. These abandoned plastic fishing nets, often referred to as "ghost fishing nets", float and settle in the ocean, becoming the main component of marine debris, posing a serious threat to marine life and may even enter the human food chain and endanger human health. Therefore, the recycling and reuse of plastic fishing nets has become an important environmental protection issue.

[0003] At present, there are some OBP plastic recycling equipment on the market, which are used to crush, clean and reprocess the discarded OBP plastic. However, these traditional plastic fishing net recycling equipment usually have the problem of poor dust prevention effect: during the crushing process, OBP plastic fishing nets will generate a lot of dust. This dust not only pollutes the working environment, but also affects the health of the workers. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide a crusher for recycling OBP plastic fishing nets, so as to effectively prevent dust from being dispersed into the working environment during the crushing process of OBP plastic fishing nets, reduce environmental pollution caused by dust, and thus reduce the impact of dust on the health of workers.

[0005] To achieve the above-mentioned object, the specific scheme of the present invention is as follows: A crusher for recycling OBP plastic fishing nets, comprising a frame and a dust collection assembly, and a crushing device and a dust removal device arranged on the top of the frame;

[0006] The pulverizing device includes a pulverizing box having a first dust removal port and a second dust removal port;

[0007] The dust removal device comprises a dust removal box having a first dust removal chamber and a second dust removal chamber; a first piston block is slidably arranged in the first dust removal chamber, a second piston block is slidably arranged in the second dust removal chamber, and the first piston block is transmission-connected with the second piston block so that the first piston block and the second piston block move synchronously in opposite directions;

[0008] When the effective volume of the first dust removal chamber increases, the first dust removal chamber is connected to the crushing box through the first dust removal port, and the second dust removal chamber is connected to the dust collection assembly; when the effective volume of the second dust removal chamber increases, the second dust removal chamber is connected to the crushing box through the second dust removal port, and the first dust removal chamber is connected to the dust collection assembly.

[0009] Furthermore, the present invention, the first dust removal port and the second dust removal port are both hinged with a first valve plate, and the first valve plate closes the first dust removal port or the second dust removal port in a natural state.

[0010] The present invention further provides pins at both ends of the first valve plate, and limiting arc grooves at both ends of the first dust removal port and both ends of the second dust removal port, and the pins are movably embedded in the corresponding limiting arc grooves to limit the opening range of the first valve plate.

[0011] Furthermore, the present invention provides a counterweight block on the first valve plate to keep the first valve plate in a closed state in a natural state.

[0012] Furthermore, in the present invention, the first piston block and the second piston block are both connected to a first spring on one side facing away from the crushing box.

[0013] The present invention further provides a first dust removal chamber with a first discharge port connected to the dust collection assembly, and a second dust removal chamber with a second discharge port connected to the dust collection assembly. Second valve plates are slidably provided in the first discharge port and the second discharge port, and a second spring is connected between the second valve plate and the dust removal box. The second spring causes the second valve plate to be in a state of closing the first discharge port or the second discharge port.

[0014] The present invention further provides a transmission connecting rod in the dust removal box, the middle axis of the transmission connecting rod is connected to the inner wall of the dust removal box, both ends of the transmission connecting rod are provided with a first transmission pin, the first piston block and the second piston block are vertically provided with a slide groove, and the first transmission pin is movably embedded in the corresponding slide groove.

[0015] The present invention further includes a crushing device which also includes a driving member and two crushing knife rollers which rotate side by side in the crushing box; the driving member is connected to one of the crushing knife rollers, the two crushing knife rollers are transmission-connected to each other, and the other crushing knife roller is transmission-connected to the first piston block to drive the first piston block to reciprocate in the first dust removal chamber.

[0016] The present invention further comprises a pulverizing knife roller comprising a knife roller body, a first knife and a second knife are evenly distributed on the circumferential surface of the knife roller body, the first knife and the second knife are alternately distributed along the circumferential direction, the second knife is slidably arranged on the knife roller body along the axial direction of the knife roller body, and a third spring is connected between the second knife and the knife roller body;

[0017] A driving ring is rotatably sleeved on one end of the knife roller body. The driving ring is fixedly connected to the inner wall of the crushing box. A spiral boss is convexly provided on the outer peripheral wall of the driving ring.

[0018] When the second tool is in contact with the spiral boss during the rotation process, the spiral boss drives the second tool to slide, so that the third spring is compressed.

[0019] The present invention further comprises that one end of another pulverizing blade roller is fixedly sleeved with a first transmission wheel, a second transmission wheel is rotatably penetrated by the dust removal box, a third transmission wheel is rotatably provided on the inner wall of the dust removal box in the first dust removal chamber, a first transmission belt is wound around the first transmission wheel and the second transmission wheel, a second transmission belt is wound around the second transmission wheel and the third transmission wheel, and the second transmission belt is provided with a second transmission pin;

[0020] One end of the first piston block is provided with a circular ring groove, and the second transmission pin is movably embedded in the circular ring groove.

[0021] The beneficial effects of the present invention are as follows: the present invention enables the first dust removal chamber and the second dust removal chamber to alternately adsorb the dust in the crushing box through the synchronous reciprocating reverse motion of the first piston block and the second piston block, thereby effectively preventing the dust from being dispersed into the working environment during the crushing process of the OBP plastic fishing net, reducing the environmental pollution of the dust, and thus reducing the impact of the dust on the health of the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a cross-sectional schematic diagram of the present invention;

[0024] Figure 3 It is a schematic structural diagram of the dust removal device of the present invention;

[0025] Figure 4 is a cross-sectional schematic diagram of the dust removal device of the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the dust removal device of the present invention after the dust removal box is hidden;

[0027] Figure 6 is a schematic structural diagram of a first piston block of the present invention;

[0028] Figure 7 It is a schematic structural diagram of the pulverizing device of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the pulverizing device of the present invention from another perspective;

[0030] Fig. 9 It is a structural schematic diagram of the crushing knife roller of the present invention;

[0031] Fig.10 It is an exploded schematic diagram of the crushing knife roller of the present invention;

[0032] Fig.11 is a schematic structural diagram of a second tool of the present invention;

[0033] Fig.12 It is a structural schematic diagram of the crushing box of the present invention;

[0034] Fig.13 is a schematic structural diagram of the first valve plate of the present invention;

[0035] Description of reference numerals: 1, frame; 21, crushing box; 211, first dust removal port; 212, second dust removal port; 213, first valve plate; 214, pin shaft; 215, limit arc groove; 216, counterweight block; 22, driving member; 23, crushing roller; 231, roller body; 232, first tool; 233, second tool; 234, third spring; 235, driving ring; 2351, spiral boss; 236, contact roller; 241, first transmission wheel; 242, second transmission wheel; 243, first transmission belt; 2 44. The third transmission wheel; 245. The second transmission belt; 2451. The second transmission pin; 25. The gear; 31. The dust removal box; 311. The first dust removal chamber; 312. The second dust removal chamber; 313. The first discharge port; 314. The second discharge port; 315. The second valve plate; 316. The second spring; 32. The first piston block; 321. The annular groove; 33. The second piston block; 34. The first spring; 35. The transmission connecting rod; 351. The first transmission pin; 36. The slide groove; 41. The washing barrel; 42. The first connecting pipe; 43. The second connecting pipe. DETAILED DESCRIPTION

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the implementation scope of the present invention is not limited thereto.

[0037] like Figures 1 to 13 As shown, a crusher for recycling OBP plastic fishing nets described in this embodiment includes a frame and a dust collection assembly for collecting dust generated during the crushing process of the OBP plastic fishing nets, and a crushing device and a dust removal device installed on the top of the frame;

[0038] The crushing device comprises a crushing box having a first dust removal port and a second dust removal port; the dust removal device comprises a dust removal box having a first dust removal chamber and a second dust removal chamber; a first piston block is slidably arranged in the first dust removal chamber, a second piston block is slidably arranged in the second dust removal chamber, and the first piston block is transmission-connected with the second piston block so that the first piston block and the second piston block move synchronously in opposite directions;

[0039] When the effective volume of the first dust removal chamber increases, the first dust removal chamber is connected to the crushing box through the first dust removal port, and the second dust removal chamber is connected to the dust collection assembly; when the effective volume of the second dust removal chamber increases, the second dust removal chamber is connected to the crushing box through the second dust removal port, and the first dust removal chamber is connected to the dust collection assembly.

[0040] Specifically, when the OBP plastic fishing net recycling crusher of this embodiment is actually used, the OBP plastic fishing net is crushed in the crushing box. During the crushing process, the first piston block and the second piston block perform synchronous reciprocating reverse motion. When the first piston slider slides away from the first dust removal port, the effective volume of the first dust removal chamber increases, and the first dust removal chamber is connected to the crushing box through the first dust removal port. The first dust removal chamber generates an adsorption force on the dust in the crushing box, so that the dust in the crushing box enters the first dust removal chamber through the first dust removal port under the action of the adsorption force, thereby achieving the dust removal effect. At the same time, since the first piston block and the second piston block synchronously move in the opposite direction, the second piston synchronously moves toward the second dust removal port, and the effective volume of the second dust removal chamber is reduced, thereby discharging the dust in the second dust removal chamber into the dust collection assembly; similarly, when the first piston slider slides toward the first dust removal port, the effective volume of the first dust removal chamber is reduced, and the dust in the first dust removal chamber is discharged into the dust collection assembly. At the same time, the second dust removal chamber is connected to the crushing box through the second dust removal port, and the dust in the crushing box is sucked into the second dust removal chamber;

[0041] In this way, as the first piston block and the second piston block synchronously reciprocate in reverse, the first dust removal chamber and the second dust removal chamber alternately adsorb the dust in the crushing box, thereby effectively preventing the dust from drifting into the working environment during the crushing process of the OBP plastic fishing net, reducing the environmental pollution of dust, and thus reducing the impact of dust on the health of workers.

[0042] like Figure 2 , Figure 7 and Figure 8 As shown, in some embodiments, the first dust removal port and the second dust removal port are both hinged with a first valve plate, and the first valve plate closes the first dust removal port or the second dust removal port in a natural state. In this embodiment, by setting the first valve plate at the first dust removal port, when the effective volume of the first dust removal chamber increases, the first valve plate can open the first dust removal port under the action of air pressure, so that the crushing box is connected with the first dust removal chamber, so that the dust in the crushing box is sucked into the first dust removal chamber, and when the effective volume of the first dust removal chamber decreases, the first valve plate can close the first dust removal port to prevent the dust sucked into the first dust removal chamber from entering the crushing box again, thereby ensuring that the dust in the first dust removal chamber is reliably discharged into the dust collection assembly; similarly, the first valve plate is set at the second dust removal port, when the first valve plate is opened, the crushed dust in the crushing box is sucked into the second dust removal chamber, and when the first valve plate is closed, the dust sucked into the second dust removal chamber is prevented from entering the crushing box again, thereby ensuring that the dust in the second dust removal chamber is reliably discharged into the dust collection assembly.

[0043] As shown in the figure, Figure 7 , Figure 8 , Fig.12 and Fig.13As shown, in the pulverizer for recycling OBP plastic fishing nets described in this embodiment, in some embodiments, both ends of the first valve plate are provided with pins, both ends of the first dust removal port and both ends of the second dust removal port are provided with limit arc grooves, and the pins are movably embedded in the corresponding limit arc grooves to limit the opening range of the first valve plate. In this embodiment, the swing range of the first valve plate is limited by setting the pins and the limit arc grooves so that the first valve plate can be reset to close the first dust removal port or the second dust removal port after swinging.

[0044] like Figure 7 , Figure 8 and Fig.13 As shown, in some embodiments of the OBP plastic fishing net recycling crusher described in this embodiment, a counterweight is provided on the first valve plate to keep the first valve plate closed in a natural state. In this embodiment, by providing a counterweight, the first valve plate can reliably close the first dust removal port or the second dust removal port in a natural state, and when the first piston block or the second piston block moves toward the crushing box, that is, the effective volume of the first dust removal chamber or the second dust removal chamber decreases, the first valve plate can quickly close the first dust removal port or the second dust removal port, thereby more effectively preventing the dust sucked into the first dust removal chamber or the second dust removal chamber from entering the crushing box again.

[0045] Benru Figure 2 , Figure 4 and Figure 5 As shown, in the embodiment of the invention, a crusher for recycling OBP plastic fishing nets is provided. In some embodiments, the first piston block and the second piston block are both connected to a first spring on the side facing away from the crushing box. Specifically, in this embodiment, the first spring is provided to provide a buffer for the first piston block or the second piston block; when the first piston block or the second piston block slides away from the crushing box, the first spring is used to contact the inner wall of the dust removal box first, thereby providing a buffer for the first piston block or the second piston block.

[0046] like Figures 1 to 5As shown, in the present embodiment, a crusher for recycling OBP plastic fishing nets is described. In some embodiments, the first dust removal chamber is provided with a first discharge port connected to the dust collection assembly, and the second dust removal chamber is provided with a second discharge port connected to the dust collection assembly. Second valve plates are slidably provided in the first discharge port and the second discharge port, and a second spring is connected between the second valve plate and the dust removal box, and the second spring causes the second valve plate to be in a state of closing the first discharge port or the second discharge port. In this embodiment, a first discharge port is provided, and a second valve plate and a second spring are provided at the first discharge port. Therefore, when the effective volume of the first dust removal chamber is reduced, the second valve plate compresses the second spring under the action of air pressure, thereby opening the first discharge port, and the dust in the first dust removal chamber is discharged into the dust collection component through the first discharge port; similarly, a second valve plate and a second spring are provided at the second discharge port, so that when the effective volume of the second dust removal chamber is reduced, the second valve plate compresses the second spring under the action of air pressure, thereby opening the second discharge port, and the dust in the second dust removal chamber is discharged into the dust collection component through the second discharge port; thereby realizing the collection of dust generated during the crushing process in the crushing box.

[0047] Specifically, Figure 1 and Figure 2 As shown, the dust collection assembly includes a washing bucket, the washing bucket is connected to the first discharge port through a first connecting pipe, and the washing bucket is connected to the second discharge port through a second connecting pipe. The dust is discharged into the washing bucket to settle the dust.

[0048] like Figures 2 to 5 As shown, in some embodiments of the OBP plastic fishing net recycling crusher described in this embodiment, a transmission connecting rod is provided in the dust removal box, the middle part of the transmission connecting rod is axially connected to the inner wall of the dust removal box, both ends of the transmission connecting rod are provided with a first transmission pin, the first piston block and the second piston block are vertically provided with a slide groove, and the first transmission pin is movably embedded in the corresponding slide groove. Specifically, when the first piston block slides, the first piston block cooperates with the first transmission pin through the slide groove to drive the transmission connecting rod to swing, and during the swinging process of the transmission connecting rod, the first transmission pin cooperates with the slide groove of the second piston block, thereby synchronously driving the second piston block to synchronously slide in the opposite direction.

[0049] like Figure 2 , Figures 8 to 11 As shown, in the present embodiment, a crusher for recycling OBP plastic fishing nets is described. In some embodiments, the crushing device also includes a driving member and two crushing knife rollers that rotate side by side and are arranged in a crushing box; the driving member is connected to one of the crushing knife rollers, and the two crushing knife rollers are connected by transmission, and the other crushing knife roller is connected by transmission to the first piston block to drive the first piston block to reciprocate in the first dust removal chamber.

[0050] In actual use, the driving member drives the crushing knife roller to rotate, and the crushing knife roller drives another crushing knife roller to rotate, and during the rotation of the other crushing knife roller, the first piston block is synchronously driven to slide back and forth; thus, the crushing process and the dust removal process are realized by one driving member, and the structural cost is reduced. For example, the driving member is a motor.

[0051] like Figures 9 to 11 As shown, in some embodiments of the pulverizer for recycling OBP plastic fishing nets described in this embodiment, the pulverizing knife roller includes a knife roller body, the circumferential surface of the knife roller body is evenly distributed with a first knife and a second knife, the first knife and the second knife are alternately distributed along the circumferential direction, the second knife is slidably arranged on the knife roller body along the axial direction of the knife roller body, and a third spring is connected between the second knife and the knife roller body; a driving ring is rotatably sleeved at one end of the knife roller body, the driving ring is fixedly connected to the inner wall of the pulverizing box, and a spiral boss is convexly arranged on the outer peripheral wall of the driving ring;

[0052] When the second tool is in contact with the spiral boss during the rotation process, the spiral boss drives the second tool to slide, so that the third spring is compressed.

[0053] One end of the blade roller body of the two crushing blade rollers away from the driving member is fixedly sleeved with a gear, and the two gears are meshed with each other, thereby realizing transmission between the two crushing blade rollers.

[0054] Specifically, the driving member drives the knife roller body to rotate, and the knife roller body drives the first cutter and the second cutter to rotate synchronously, thereby crushing the OBP plastic fishing net. During the rotation process, when the second cutter contacts the spiral boss, the spiral boss drives the second cutter to slide circumferentially, and the third spring is compressed, so that the second cutter cuts and separates the entangled material, effectively preventing the equipment from jamming. This is conducive to ensuring the crushing efficiency and extending the service life of the equipment.

[0055] After the second tool rotates to be out of contact with the spiral boss, the second tool is reset under the elastic force of the third spring to come into contact with the spiral boss in the next rotation cycle.

[0056] In this embodiment, the second cutter is arranged to slide in the axial direction during the rotation process, so as to cut and separate the entangled objects, thereby improving the anti-entanglement performance of the equipment.

[0057] For example, Figures 9 to 11 As shown, one end of the second cutter close to the drive ring is provided with a contact roller for contacting and abutting with the spiral boss. By providing the contact roller, the second cutter and the spiral boss cooperate more smoothly.

[0058] like Figure 1 , Figure 7 and Figure 8As shown, in the present embodiment, a crusher for recycling OBP plastic fishing nets is described. In some embodiments, one end of another crushing knife roller is fixedly sleeved with a first transmission wheel, a second transmission wheel is rotatably penetrated through the dust removal box, and a third transmission wheel is rotatably provided on the inner wall of the dust removal box in the first dust removal chamber, a first transmission belt is wound around the first transmission wheel and the second transmission wheel, a second transmission belt is wound around the second transmission wheel and the third transmission wheel, and the second transmission belt is provided with a second transmission pin; one end of the first piston block is provided with a circular ring groove, and the second transmission pin is movably embedded in the circular ring groove.

[0059] In actual use, the crushing knife roller drives the first transmission wheel to rotate, the first transmission wheel drives the second transmission wheel to rotate through the first transmission belt, the second transmission wheel drives the third transmission wheel to rotate through the second transmission belt, and during the rotation of the third transmission belt, the second transmission pin cooperates with the annular groove to drive the first piston block to slide back and forth in the first dust removal chamber; in this way, by setting the transmission cooperation of the first transmission wheel, the second transmission wheel, the first transmission belt, the second transmission belt and the third transmission wheel, there is no need for multiple drive controls, the control module is simplified, and the control cost is reduced.

[0060] The above is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the protection scope of the patent application of the present invention.

Claims

1. A crusher for recycling OBP plastic fishing nets, characterized in that: It includes a frame and a dust collection assembly, as well as a crushing device and a dust removal device arranged on the top of the frame; The pulverizing device includes a pulverizing box having a first dust removal port and a second dust removal port; The dust removal device comprises a dust removal box having a first dust removal chamber and a second dust removal chamber; a first piston block is slidably arranged in the first dust removal chamber, a second piston block is slidably arranged in the second dust removal chamber, and the first piston block is transmission-connected with the second piston block so that the first piston block and the second piston block move synchronously in opposite directions; When the effective volume of the first dust removal chamber increases, the first dust removal chamber is connected to the crushing box through the first dust removal port, and the second dust removal chamber is connected to the dust collection assembly; when the effective volume of the second dust removal chamber increases, the second dust removal chamber is connected to the crushing box through the second dust removal port, and the first dust removal chamber is connected to the dust collection assembly; The pulverizing device also includes a driving member and two pulverizing knife rollers that rotate side by side in the pulverizing box; the driving member is connected to one of the pulverizing knife rollers, the two pulverizing knife rollers are transmission-connected to each other, and the other pulverizing knife roller is transmission-connected to the first piston block to drive the first piston block to reciprocate in the first dust removal chamber; The pulverizing knife roller comprises a knife roller body, a first knife and a second knife are evenly distributed on the circumference of the knife roller body, the first knife and the second knife are alternately distributed along the circumference, the second knife is slidably arranged on the knife roller body along the axial direction of the knife roller body, and a third spring is connected between the second knife and the knife roller body; A driving ring is rotatably sleeved on one end of the knife roller body. The driving ring is fixedly connected to the inner wall of the crushing box. A spiral boss is convexly provided on the outer peripheral wall of the driving ring. When the second cutter contacts the spiral boss during the rotation process, the spiral boss drives the second cutter to slide, so that the third spring is compressed, and the second cutter cuts and separates the winding.

2. A crusher for recycling OBP plastic fishing nets according to claim 1, characterized in that: The first dust removal port and the second dust removal port are both hinged with a first valve plate, and the first valve plate closes the first dust removal port or the second dust removal port in a natural state.

3. A crusher for recycling OBP plastic fishing nets according to claim 2, characterized in that: Pins are arranged at both ends of the first valve plate, and limiting arc grooves are arranged at both ends of the first dust removal port and both ends of the second dust removal port. The pins are movably embedded in the corresponding limiting arc grooves to limit the opening range of the first valve plate.

4. A crusher for recycling OBP plastic fishing nets according to claim 2, characterized in that: The first valve plate is provided with a counterweight block so that the first valve plate can maintain a closed state in a natural state.

5. A crusher for recycling OBP plastic fishing nets according to claim 1, characterized in that: The first piston block and the second piston block are both connected to a first spring on one side facing away from the crushing box.

6. A crusher for recycling OBP plastic fishing nets according to claim 1, characterized in that: The first dust removal chamber is provided with a first discharge port connected to the dust collection assembly, and the second dust removal chamber is provided with a second discharge port connected to the dust collection assembly. Second valve plates are slidably provided in the first discharge port and the second discharge port, and a second spring is connected between the second valve plate and the dust removal box. The second spring causes the second valve plate to be in a state of closing the first discharge port or the second discharge port.

7. A crusher for recycling OBP plastic fishing nets according to claim 1, characterized in that: A transmission connecting rod is arranged in the dust removal box, the middle axis of the transmission connecting rod is connected to the inner wall of the dust removal box, both ends of the transmission connecting rod are provided with a first transmission pin, the first piston block and the second piston block are vertically provided with a slide groove, and the first transmission pin is movably embedded in the corresponding slide groove.

8. A crusher for recycling OBP plastic fishing nets according to claim 1, characterized in that: One end of the other pulverizing blade roller is fixedly sleeved with a first transmission wheel, a second transmission wheel is rotatably penetrated by the dust removal box, a third transmission wheel is rotatably provided on the inner wall of the dust removal box in the first dust removal chamber, a first transmission belt is wound around the first transmission wheel and the second transmission wheel, a second transmission belt is wound around the second transmission wheel and the third transmission wheel, and the second transmission belt is provided with a second transmission pin; One end of the first piston block is provided with a circular ring groove, and the second transmission pin is movably embedded in the circular ring groove.

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