Harmless circulating treatment device for livestock farm waste

Abstract

The invention discloses a livestock farm waste harmless circulating treatment device, and relates to the technical field of waste treatment.The livestock farm waste harmless circulating treatment device comprises a device body, a first support is fixedly connected to the top face of the device body, a rotating rod is rotatably connected to the top end of the first support, and a treatment box is rotatably connected to the rotating rod; supporting plates are fixedly connected to the two sides of the treatment box, the other ends of the supporting plates are fixedly connected to the first support, a first material receiving plate is arranged on the bottom face of the treatment box, the two sides of the first material receiving plate are fixedly connected to the first support, and a liquid collecting box is arranged on the device body; the device further comprises an extrusion assembly, a rolling assembly and a spreading assembly. The device is reasonable in structure, sewage in waste is conveniently extruded out through the extrusion assembly, then agglomerates in solid waste in the treatment box are crushed through the rolling assembly, and finally the extruded solid waste is scattered through the spreading assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste treatment, in particular to a harmless recycling treatment device for farm waste. BACKGROUND

[0002] Farm waste mainly includes the following solid waste, and its treatment is crucial to environmental protection and sustainable agricultural development. Livestock and poultry manure and litter contain daily excreta, shed litter, etc., which are easy to produce foul-smelling gases (such as ammonia, hydrogen sulfide) and pollute the soil and water sources. Livestock wastewater contains nitrogen, phosphorus and other pollutants, and direct discharge will cause water eutrophication, so it needs to be treated to meet the discharge standards.

[0003] The Chinese utility model patent with the publication number CN219581345U discloses a harmless recycling treatment device for pig farm waste, which comprises a treatment box, an inner wall of the treatment box is fixedly connected with a partition plate, a filter screen and a first filter plate, the partition plate is fixedly connected with the filter screen, the lower surface of the first filter plate is fixedly connected with the upper surface of the partition plate, a crushing mechanism is connected in the treatment box through bolts, the crushing mechanism is located above the filter screen, the crushing mechanism is located on one side of the first filter plate, and a screw conveyor is connected in the treatment box through bolts; the present application relates to the technical field of pig breeding. When the harmless recycling treatment device for pig farm waste is used, the crushing mechanism is used to crush the larger solid waste on the filter screen, the screw conveyor is started to control the solid waste to move while being filtered, and then the solid waste is collected in the inside of the collecting mechanism, or the solid waste is directly discharged outward through the solid collecting mechanism, so that the application is more convenient to use. The above-mentioned patent crushes the breeding waste through the crushing mechanism, and then moves the breeding waste through the screw conveyor, but some fecal breeding waste contains a large amount of sewage, and most of the existing ones are manually salvaged from the solid waste in the sewage, so the breeding waste treatment efficiency is very slow. SUMMARY

[0004] The present application aims to provide a harmless recycling treatment device for farm waste, which realizes the extrusion of sewage in the waste through the extrusion assembly, the crushing of the agglomerated block in the solid waste in the treatment box through the roller assembly, and the spreading treatment of the extruded solid waste through the spreading assembly.

[0005] In order to achieve the above object, the present application provides the following technical scheme: a harmless recycling device for farm waste, comprising a device body, a first support fixedly connected to the top surface of the device body, a rotating shaft rotatably connected to the top end of the first support, a treatment box rotatably connected to the rotating shaft, support plates fixedly connected to the two sides of the treatment box, the other end of the support plates fixedly connected to the first support, a first material receiving plate provided at the bottom surface of the treatment box, the two sides of the first material receiving plate fixedly connected to the first support, and a liquid collecting tank provided on the device body; further comprising an extrusion assembly, a roller assembly and a spreading assembly, the extrusion assembly is arranged on the treatment box for treating waste, the roller assembly is arranged on the device body for secondary treatment of waste, and the spreading assembly is arranged on the roller assembly for cooperative use.

[0006] Preferably, the extrusion assembly comprises a guide rail fixedly installed on the outer surface of the treatment box, a box door slidably connected inside the guide rail, a handle fixedly connected to the surface of the box door, and a hole plate fixedly installed at the bottom of the treatment box.

[0007] Preferably, a pressing plate is fixedly connected to the rotating shaft, first belt pulleys are fixedly connected to the two ends of the rotating shaft, a first transmission belt is sleeved on the first belt pulleys, the other end of the first transmission belt is sleeved on a second belt pulley, the second belt pulley is fixedly connected to one end of a transmission rod, the other end of the transmission rod is fixedly connected to the output end of a first motor, the first motor is fixedly installed at the middle position of a frame, and the frame is fixedly connected to the first support.

[0008] Preferably, the roller assembly comprises a second support fixedly installed on the device body, a rod body rotatably connected to the second support, a first compression roller fixedly connected to the rod body, and stop discs fixedly connected to the two ends of the first compression roller, and a second compression roller attached to one side of the stop discs.

[0009] Preferably, the two ends of the second compression roller are fixedly connected to a sleeve block, the sleeve block is slidably connected to a sliding rod, one end of the sliding rod is fixedly connected to a first shaft seat, the first shaft seat is fixedly connected to the second support, the other end of the sliding rod is fixedly connected to a sleeve ring, a first spring is sleeved on the sliding rod, and the two ends of the first spring are fixedly connected to one side of the sleeve block and one side of the sleeve ring, respectively.

[0010] Preferably, a second material receiving plate is provided at the bottom surface position of the second compression roller and the first compression roller, the two ends of the second material receiving plate are fixedly connected to the second support, and a storage box is provided on the device body.

[0011] Preferably, a third belt pulley is fixedly connected to the rod body, a second transmission belt is sleeved on the third belt pulley, the other end of the second transmission belt is fixedly sleeved on a fourth belt pulley, the fourth belt pulley is fixedly connected to an output shaft, the other end of the output shaft is fixedly connected to the output end of a second motor, and the second motor is fixedly installed on the device body.

[0012] Preferably, the spreading assembly comprises an arm plate fixedly installed at both ends of the rod body, the other end of the arm plate is fixedly connected with a pin column, the pin column is rotatably connected with a linkage plate, and the other end of the linkage plate is rotatably connected to a butt joint rod.

[0013] Preferably, the other end of the butt joint rod is fixedly connected to a sliding block, the sliding block is slidably connected to a side rod, both ends of the side rod are fixedly connected to a second shaft seat, and the second shaft seat is fixedly connected to one side of the storage box.

[0014] Preferably, the top surface of the sliding block is fixedly connected with a fixed plate, the top end of the fixed plate is fixedly connected to a top plate, a plug rod is movably inserted on the top plate, the top end of the plug rod is fixedly connected with a snap ring, a second spring is sleeved on the plug rod, both ends of the second spring are fixedly connected with the bottom surface of the snap ring and the top end of the top plate, and the bottom end of the plug rod is fixedly connected with a claw plate.

[0015] In summary, the present application has the following advantages: 1. The structure of the present application is reasonable, the breeding waste is added to the inside of the treatment box, then the first motor starts to operate, the transmission rod is rotated through the operation of the first motor, the second belt pulley is fixedly connected at both ends of the transmission rod, the second belt pulley is rotated through the rotation of the transmission rod, the rotating rod is rotated through the first belt pulley on the first transmission belt, the pressing plate is fixedly connected to the rotating rod, the pressing plate is rotated through the rotation of the rotating rod, so that the pressing plate can extrude the solid waste in the treatment box, the sewage is discharged through the hole plate, then the box door is opened to discharge the solid waste in the treatment box.

[0016] 2. In the present application, the extruded solid waste in the treatment box enters between the first and second compression rollers by opening the box door, then the second motor starts to operate, the output shaft is rotated through the operation of the second motor, the fourth belt pulley is fixedly connected to the output shaft, the fourth belt pulley is rotated through the rotation of the output shaft, the third belt pulley is rotated through the rotation of the fourth belt pulley, the third belt pulley is fixedly connected to the rod body, the rod body is rotated through the rotation of the third belt pulley, so that the first and second compression rollers can crush the clumps in the solid waste, and the second material receiving plate enters the storage box for further treatment.

[0017] 3、The arm plate is fixedly connected to both ends of the rod body, and the arm plate is rotated through the rotation of the rod body, the rotation of the arm plate drives the abutment rod to move through the linkage plate on the linkage plate, the abutment rod is fixedly connected to the sliding block, the movement of the abutment rod drives the sliding block to slide on the side rod, the movement of the sliding block drives the top plate on the fixed plate to move, so that the claw plate at the bottom of the top plate can scatter the solid waste after extrusion, thereby completing the solid-liquid separation work of the waste. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the device body; Figure 2 It is a schematic diagram of the three-dimensional structure of the device body from the back; Figure 3 It is a schematic diagram of the three-dimensional structure of the processing box from the back; Figure 4 It is a schematic diagram of the three-dimensional structure of the processing box from the bottom; Figure 5 It is a schematic diagram of the three-dimensional structure of the processing box from the side; Figure 6 It is a schematic diagram of the three-dimensional structure of the storage box; Figure 7 It is a schematic diagram of the three-dimensional structure of the second compression roller.

[0020] As shown in the figure: 1, the device body; 101, the first support; 102, the rotating rod; 103, the processing box; 104, the support plate; 105, the first receiving plate; 106, the liquid collecting tank; 2, the guide rail; 201, the box door; 202, the handle; 203, the hole plate; 204, the pressing plate; 205, the first pulley; 206, the first transmission belt; 207, the second pulley; 208, the transmission rod; 209, the first motor; 210, the frame; 3, the second support; 301, the rod body; 302, the first compression roller; 303, the baffle; 304, the second compression roller; 305, the sleeve block; 306, the sliding rod; 307, the first shaft seat; 308, the sleeve ring; 309, the first spring; 310, the second receiving plate; 311, the storage box; 312, the third pulley; 313, the second transmission belt; 314, the fourth pulley; 315, the output shaft; 316, the second motor; 4, the arm plate; 401, the pin column; 402, the linkage plate; 403, the butt joint rod; 404, the sliding block; 405, the side rod; 406, the second shaft seat; 407, the fixed plate; 408, the top plate; 409, the insertion rod; 410, the snap ring; 411, the second spring; 412, the claw plate. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] Embodiment: Reference Figure 1 Figure 7 As shown in the figure: 1, the device body; 101, the first support; 102, the rotating rod; 103, the processing box; 104, the support plate; 105, the first receiving plate; 106, the liquid collecting tank; 2, the guide rail; 201, the box door; 202, the handle; 203, the hole plate; 204, the pressing plate; 205, the first pulley; 206, the first transmission belt; 207, the second pulley; 208, the transmission rod; 209, the first motor; 210, the frame; 3, the second support; 301, the rod body; 302, the first compression roller; 303, the baffle; 304, the second compression roller; 305, the sleeve block; 306, the sliding rod; 307, the first shaft seat; 308, the sleeve ring; 309, the first spring; 310, the second receiving plate; 311, the storage box; 312, the third pulley; 313, the second transmission belt; 314, the fourth pulley; 315, the output shaft; 316, the second motor; 4, the arm plate; 401, the pin column; 402, the linkage plate; 403, the butt joint rod; 404, the sliding block; 405, the side rod; 406, the second shaft seat; 407, the fixed plate; 408, the top plate; 409, the insertion rod; 410, the snap ring; 411, the second spring; 412, the claw plate.

[0023] ​Specifically, it needs to be noted that the first motor 209 and the second motor 316 are electrically connected to the control unit through wires, and the specific control mode between them is through the prior art, which will not be described here.

[0024] As an embodiment of the present embodiment, the extrusion assembly comprises a guide rail 2 fixedly installed on the outer surface of the treatment box 103, a box door 201 slidingly connected inside the guide rail 2, a handle 202 fixedly connected to the surface of the box door 201, a hole plate 203 fixedly installed at the bottom position of the treatment box 103, a pressure plate 204 fixedly connected to the rotating rod 102, a first belt pulley 205 fixedly connected to both ends of the rotating rod 102, a first transmission belt 206 sleeved on the first belt pulley 205, the other end of the first transmission belt 206 sleeved on a second belt pulley 207, the second belt pulley 207 fixedly connected to one end of a transmission rod 208, the other end of the transmission rod 208 fixedly connected to the output end of a first motor 209, the first motor 209 fixedly installed at the middle position of a frame 210, and the frame 210 fixedly connected to the first support 101.

[0025] Specifically, the breeding waste is added to the inside of the treatment box 103, and then the first motor 209 starts to operate, the transmission rod 208 is rotated by the operation of the first motor 209, the second belt pulley 207 is fixedly connected to both ends of the transmission rod 208, the second belt pulley 207 is rotated by the rotation of the transmission rod 208, the rotating rod 102 is rotated by the first belt pulley 205 on the first transmission belt 206, the pressure plate 204 is fixedly connected to the rotating rod 102, the pressure plate 204 is rotated by the rotation of the rotating rod 102, so that the pressure plate 204 can extrude the solid waste in the treatment box 103, and the sewage is discharged through the hole plate 203, then the box door 201 is opened to discharge the solid waste in the treatment box 103.

[0026] As an embodiment in the embodiment, the roller assembly comprises a second support 3 fixedly installed on the device body 1, a rod body 301 is rotatably connected to the second support 3, a first compression roller 302 is fixedly connected to the rod body 301, blocking discs 303 are fixedly connected to both ends of the first compression roller 302, a second compression roller 304 is attached to one side of the blocking disc 303, both ends of the second compression roller 304 are fixedly connected to a sleeve block 305, the sleeve block 305 is slidingly connected to a sliding rod 306, one end of the sliding rod 306 is fixedly connected to a first shaft seat 307, the first shaft seat 307 is fixedly connected to the second support 3, the other end of the sliding rod 306 is fixedly connected to a sleeve ring 308, a first spring 309 is sleeved on the sliding rod 306, both ends of the first spring 309 are fixedly connected to one side of the sleeve block 305 and one side of the sleeve ring 308 respectively, a second material receiving plate 310 is arranged at the bottom surface position of the second compression roller 304 and the first compression roller 302, both ends of the second material receiving plate 310 are fixedly connected to the second support 3, a storage box 311 is arranged on the device body 1, a third pulley 312 is fixedly connected to the rod body 301, a second transmission belt 313 is sleeved on the third pulley 312, the other end of the second transmission belt 313 is fixedly sleeved on a fourth pulley 314, the fourth pulley 314 is fixedly connected to an output shaft 315, the other end of the output shaft 315 is fixedly connected to the output end of a second motor 316, and the second motor 316 is fixedly installed on the device body 1.

[0027] Specifically, the extruded solid waste in the treatment box 103 is made to enter between the first compression roller 302 and the second compression roller 304 by opening the box door 201, and then the second motor 316 starts to operate, the output shaft 315 is rotated by the operation of the second motor 316, the fourth pulley 314 is fixedly connected to the output shaft 315, the fourth pulley 314 is rotated by the rotation of the output shaft 315, the third pulley 312 is driven to rotate by the rotation of the fourth pulley 314 through the second transmission belt 313, the third pulley 312 is fixedly connected to the rod body 301, the rod body 301 is rotated by the rotation of the third pulley 312, so that the first compression roller 302 and the second compression roller 304 can crush the lumps in the solid waste, and the second material receiving plate 310 enters the storage box 311 for further processing.

[0028] As an embodiment in the embodiment, the spreading assembly comprises arm plates 4 fixedly installed at both ends of the rod body 301, a pin column 401 fixedly connected to the other end of the arm plate 4, a linkage plate 402 rotatably connected to the pin column 401, the other end of the linkage plate 402 rotatably connected to a butt joint rod 403, the other end of the butt joint rod 403 fixedly connected to a sliding block 404, the sliding block 404 slidingly connected to a side rod 405, both ends of the side rod 405 fixedly connected to a second shaft seat 406, the second shaft seat 406 fixedly connected to one side of the storage box 311, a fixed plate 407 fixedly connected to the top surface of the sliding block 404, the top end of the fixed plate 407 fixedly connected to a top plate 408, a plug rod 409 movably inserted in the top plate 408, a snap ring 410 fixedly connected to the top end of the plug rod 409, a second spring 411 sleeved on the plug rod 409, both ends of the second spring 411 fixedly connected to the bottom surface of the snap ring 410 and the top end of the top plate 408 respectively, and a claw plate 412 fixedly connected to the bottom end of the plug rod 409.

[0029] Specifically, when the solid waste enters the inside of the storage box 311, the arm plates 4 are fixedly connected at both ends of the rod body 301, the arm plates 4 are rotated through the rotation of the rod body 301, the rotation of the arm plates 4 drives the butt joint rod 403 to move through the linkage plate 402 on the linkage plate 402, the movement of the butt joint rod 403 is fixedly connected to the sliding block 404, the movement of the butt joint rod 403 drives the sliding block 404 to slide on the side rod 405, the movement of the sliding block 404 drives the top plate 408 on the fixed plate 407 to move, so that the claw plate 412 at the bottom of the top plate 408 can scatter the solid waste after being extruded, thereby completing the solid-liquid separation of the waste.

[0030] The working principle of the application is that the breeding waste is added into the treatment box 103, then the first motor 209 starts to work, the transmission rod 208 is rotated through the work of the first motor 209, the second belt pulley 207 is fixedly connected at both ends of the transmission rod 208, the second belt pulley 207 is rotated through the rotation of the transmission rod 208, the rotation of the second belt pulley 207 drives the rotating rod 102 to rotate through the first belt pulley 205 on the first transmission belt 206, the pressing plate 204 is fixedly connected to the rotating rod 102, the pressing plate 204 is rotated through the rotation of the rotating rod 102, so that the pressing plate 204 can extrude the solid waste in the treatment box 103, the sewage is discharged through the hole plate 203, then the door 201 is opened to discharge the solid waste in the treatment box 103. The extruded solid waste in the treatment box 103 is made to enter between the first compression roller 302 and the second compression roller 304 by opening the box door 201, and then the second motor 316 starts to operate, the output shaft 315 is made to rotate by the operation of the second motor 316, the fourth belt pulley 314 is fixedly connected to the output shaft 315, the fourth belt pulley 314 is made to rotate by the rotation of the output shaft 315, the rotation of the fourth belt pulley 314 drives the third belt pulley 312 to rotate through the second transmission belt 313, the third belt pulley 312 is fixedly connected to the rod body 301, the rod body 301 is made to rotate by the rotation of the third belt pulley 312, so that the first compression roller 302 and the second compression roller 304 crush the clumps in the solid waste, and then the solid waste enters the storage box 311 through the second receiving plate 310 for further processing. When the solid waste enters the storage box 311, the arm plate 4 is fixedly connected to both ends of the rod body 301, the arm plate 4 is made to rotate by the rotation of the rod body 301, the rotation of the arm plate 4 drives the abutting rod 403 to move through the linkage plate 402 on the linkage plate 402, the abutting rod 403 is fixedly connected to the sliding block 404, the movement of the abutting rod 403 makes the sliding block 404 slide on the side rod 405, the movement of the sliding block 404 makes the top plate 408 on the fixed plate 407 move, so that the claw plate 412 at the bottom of the top plate 408 scatters the extruded solid waste, thereby completing the solid-liquid separation of the waste.

[0031] Finally, it should be noted that: the above is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A device for the harmless recycling and treatment of livestock farm waste, characterized in that, Include: The device body (1), the top surface of the device body (1) is fixedly connected with the first support (101), the top end of the first support (101) is rotatably connected with the rotating rod (102), the rotating rod (102) is rotatably connected with the processing box (103), both sides of the processing box (103) are fixedly connected with the supporting plate (104), the other end of the supporting plate (104) is fixedly connected on the first support (101), the bottom surface of the processing box (103) is provided with the first receiving plate (105), both sides of the first receiving plate (105) are fixedly connected on the first support (101), the device body (1) is provided with the liquid collecting tank (106); It also includes an extrusion assembly, a roller assembly and a spreading assembly, the extrusion assembly is arranged on the processing box (103) for processing waste, the roller assembly is arranged on the device body (1) for secondary processing of waste, and the spreading assembly is arranged on the roller assembly for cooperation.

2. A device for recycling and rendering harmless farm waste according to claim 1, characterized in that: The extrusion assembly includes a guide rail (2) fixedly installed on the outer surface of the processing box (103), the guide rail (2) is slidably connected with a box door (201), the surface of the box door (201) is fixedly connected with a handle (202), and the bottom of the processing box (103) is fixedly installed with a hole plate (203).

3. A device for recycling and rendering harmless farm waste according to claim 2, characterized in that: The rotating rod (102) is fixedly connected with a pressing plate (204), both ends of the rotating rod (102) are fixedly connected with a first belt pulley (205), the first belt pulley (205) is sleeved with a first transmission belt (206), the other end of the first transmission belt (206) is sleeved on a second belt pulley (207), the second belt pulley (207) is fixedly connected on one end of a transmission rod (208), the other end of the transmission rod (208) is fixedly connected with the output end of a first motor (209), the first motor (209) is fixedly installed on the middle position of a frame (210), and the frame (210) is fixedly connected on the first support (101).

4. The farm waste harmless recycling treatment device according to claim 2, characterized in that: The roller assembly includes a second support (3) fixedly installed on the device body (1), the second support (3) is rotatably connected with a rod body (301), the rod body (301) is fixedly connected with a first compression roller (302), both ends of the first compression roller (302) are fixedly connected with a baffle disc (303), and the side of the baffle disc (303) is attached with a second compression roller (304).

5. A farm waste harmless recycling treatment device according to claim 4, characterized in that: Both ends of the second compression roller (304) are fixedly connected to a sleeve block (305), the sleeve block (305) is slidingly connected to a sliding rod (306), one end of the sliding rod (306) is fixedly connected to a first shaft seat (307), the first shaft seat (307) is fixedly connected to the second support (3), the other end of the sliding rod (306) is fixedly connected to a sleeve ring (308), a first spring (309) is sleeved on the sliding rod (306), and both ends of the first spring (309) are fixedly connected to one side of the sleeve block (305) and one side of the sleeve ring (308) respectively.

6. A farm waste harmless recycling treatment device according to claim 5, characterized in that: The bottom surface of the second compression roller (304) and the first compression roller (302) is provided with a second material receiving plate (310), both ends of the second material receiving plate (310) are fixedly connected to the second support (3), and the device body (1) is provided with a storage box (311).

7. A farm waste harmless recycling treatment device according to claim 6, characterized in that: The rod body (301) is fixedly connected with a third belt pulley (312), a second transmission belt (313) is sleeved on the third belt pulley (312), the other end of the second transmission belt (313) is fixedly sleeved on a fourth belt pulley (314), the fourth belt pulley (314) is fixedly connected to an output shaft (315), the other end of the output shaft (315) is fixedly connected to the output end of a second motor (316), and the second motor (316) is fixedly installed on the device body (1).

8. The farm waste harmless recycling treatment device according to claim 6, characterized in that: The spreading assembly comprises an arm plate (4) fixedly installed at both ends of the rod body (301), the other end of the arm plate (4) is fixedly connected with a pin column (401), the pin column (401) is rotatably connected with a linkage plate (402), and the other end of the linkage plate (402) is rotatably connected to a butt joint rod (403).

9. A farm waste harmless recycling treatment device according to claim 8, characterized in that: The other end of the butt joint rod (403) is fixedly connected to a sliding block (404), the sliding block (404) is slidingly connected to a side rod (405), both ends of the side rod (405) are fixedly connected to a second shaft seat (406), and the second shaft seat (406) is fixedly connected to one side of the storage box (311).

10. A farm waste harmless recycling treatment device according to claim 9, characterized in that: The top surface of the sliding block (404) is fixedly connected with a fixed plate (407), the top end of the fixed plate (407) is fixedly connected to a top plate (408), a plug rod (409) is movably inserted on the top plate (408), the top end of the plug rod (409) is fixedly connected with a snap ring (410), a second spring (411) is sleeved on the plug rod (409), and both ends of the second spring (411) are fixedly connected to the bottom surface of the snap ring (410) and the top end of the top plate (408) respectively. The bottom end of the plug rod (409) is fixedly connected with a claw plate (412).

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