Storage device for waste lithium ion battery raw materials

Abstract

The invention discloses a storage device for waste lithium ion battery raw materials, and relates to the technical field of waste lithium ion battery processing. Comprising a material storage structure, a crushing and grinding structure is installed at the top of the material storage structure, a barrel structure is installed in an inner cavity of the material storage structure, the material storage structure comprises a first driving motor installed at the bottom of the crushing and grinding structure, and a transmission column is in transmission connection with the bottom transmission end of the first driving motor and located in an inner cavity of a material storage box; a shifting disc is mounted at one end of the bottom of the transmission column, a placement groove is formed in the surface of the top of the shifting disc, a storage barrel is mounted at the bottom of the inner side of the placement groove, and waste lithium ion battery raw materials are firstly crushed through a crushing and grinding structure, so that the waste lithium ion battery raw materials enter the storage barrel; the waste lithium ion battery raw material crushing device has the advantages that the waste lithium ion battery raw material crushing device is simple in structure, excessive space is occupied, waste lithium ion battery raw materials are more conveniently discharged after being crushed, storage barrels are controlled to move by starting a first driving motor during charging, so that different storage barrels move to the lower surface of a butt joint port, and then a sliding pipeline is controlled to ascend by starting a third driving motor; according to the waste lithium ion battery raw material feeding device, the effect that waste lithium ion battery raw materials enter the storage barrels conveniently is achieved, different storage barrels are switched, and the problem of manual contact is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of waste lithium-ion battery processing, and in particular to a storage device for waste lithium-ion battery raw materials. Background Art

[0002] In the current prior art, the storage device for waste lithium-ion battery raw materials usually includes a tank body, the outer side of the tank body is fully wrapped with a layer of anti-collision pad, and the top of the tank body is equipped with a sealing cover, the bottom of the tank body is equipped with an internal circulation water cooling mechanism, and the bottom of the tank body is equipped with a plurality of elastic telescopic buffer feet. The device of the present invention has better heat dissipation performance, anti-collision ability, can buffer the stamping and extrusion force generated during transportation or other things, and plays a good protective role for the waste lithium-ion battery raw materials inside it, and has better sealing performance.

[0003] However, the existing technology still has shortcomings, such as the following aspects: The storage device for waste lithium-ion battery raw materials has a simple structure, which means that most of the storage and loading of waste lithium-ion battery raw materials requires manual operation, which makes it easy for humans to come into contact with the loaded materials, causing harm to the human body. In addition, there are too many steps on the left side when humans rotate it, which affects the loading effect. Summary of the invention

[0004] The present invention provides a storage device for waste lithium-ion battery raw materials to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: A material storage device for waste lithium-ion battery raw materials, comprising a material storage structure, a crushing and grinding structure is fixedly connected to the top of the material storage structure, a rotating structure is bolted to the outer wall of the top of the material storage structure, a barrel structure is bolted to the inner side of the rotating structure, and the rotating structure comprises a No. 1 driving motor; One end of the bottom transmission of the No. 1 driving motor is located in the inner cavity of the material storage box and is connected to a transmission column. A shift plate is bolted to one end of the bottom of the transmission column. A placement groove is provided on the surface of the top of the shift plate. A storage barrel is installed on the bottom bolt inside the placement groove. A rolling groove is provided at the bottom of the inner cavity of the material storage box and on the lower surface of the shift plate, and a roller bracket is boltedly installed on the outer wall of the bottom of the shift plate and on the inner side of the rolling groove.

[0006] Preferably, the top of the material storage barrel is fixedly connected with a sliding pipe mouth, the top of the material storage barrel and the outer walls on both sides of the sliding pipe mouth are fixedly connected with a limit frame, and the outer wall on one side of the top of the material storage barrel is bolted with a No. 1 mounting frame.

[0007] Preferably, a No. 3 driving motor is installed with bolts on the outer wall of the top of the No. 1 mounting frame, and a No. 2 bevel gear is transmission-connected to one end of the bottom transmission of the No. 3 driving motor and is located on the lower surface of the No. 1 mounting frame, and a No. 3 bevel gear is meshed with the outer wall of the No. 2 bevel gear, and a No. 1 rotating rod is fixedly sleeved on the outer wall on the inner side of the No. 2 bevel gear, and a No. 4 bevel gear is fixedly sleeved on the outer walls at both ends of the No. 1 rotating rod.

[0008] Preferably, the outer wall of the No. 4 bevel gear is meshed with the No. 7 bevel gear, the outer wall of one side of the No. 7 bevel gear is installed with the No. 4 rotating rod, and the outer wall of the No. 4 rotating rod is rotatably connected to the No. 2 mounting frame.

[0009] Preferably, the bottom of the No. 2 mounting frame is bolted to the top of the storage barrel, the outer wall of the No. 7 bevel gear is meshed with the No. 1 bevel gear, the inner side of the No. 1 bevel gear is fixedly sleeved with a threaded rod, and one end of the top of the threaded rod is rotatably connected to the top of the inner side of the limit frame.

[0010] Preferably, one end of the bottom of the threaded rod is rotatably connected to the top of the storage barrel, the sliding connection on the inner side of the sliding pipe mouth is provided with a sliding pipe, the outer wall of the top of the sliding pipe is fixedly sleeved with a fixed plate, the outer wall bolts of the bottom of the fixed plate are provided with a rubber buffer plate, the outer walls on both sides of the fixed plate are fixedly connected with side panels, and the inner sides of the outer walls on both sides of the side panels are threadedly connected to the outer walls of the threaded rod.

[0011] Preferably, the crushing and grinding structure includes a crushing box bolted to the top of the storage box, and a No. 2 driving motor is bolted to the top of the crushing box.

[0012] Preferably, a feed port is bolted on the top of the crushing box and located on one side of the No. 2 drive motor, a crushing head is connected to one end of the bottom transmission of the No. 2 drive motor and located in the inner cavity of the crushing box, and a docking port is bolted on the bottom of the crushing box.

[0013] Preferably, the barrel structure includes a storage barrel, a discharge port is bolted installed at one end of the bottom of the storage barrel, a fixing column is bolted installed on the inner wall of the discharge port, a No. 4 drive motor is bolted installed on the outer wall of one end of the fixing column and located at the outer wall of the discharge port, and a No. 3 rotating rod is connected to one end of the transmission of the No. 4 drive motor and located in the inner cavity of the fixed column.

[0014] Preferably, a bolt at one end of the No. 3 rotating rod is installed with a No. 6 bevel gear, the outer wall of the No. 6 bevel gear is meshed with a No. 5 bevel gear, the inner side of the No. 5 bevel gear is fixedly sleeved with a No. 2 rotating rod, and the outer wall of the No. 2 rotating rod and the upper surface of the fixed column are fixedly connected with threaded leaves.

[0015] In summary, this technical solution mainly has the following beneficial effects: The waste lithium-ion battery raw materials are first crushed by the crushing and grinding structure, so that the waste lithium-ion battery raw materials can enter the internal size problem of the storage barrel, resulting in the occupation of excess space, and it is more convenient to unload the waste lithium-ion battery raw materials after crushing. When loading, the storage barrel movement position is controlled by starting the No. 1 drive motor, so that different storage barrels are moved to the lower surface of the docking port, and then the No. 3 drive motor is started to control the sliding pipe to rise and dock with the outer wall of the docking port, so that it is convenient for the waste lithium-ion battery raw materials to enter the interior of the storage barrel, so that different storage barrels can be switched and the problem of manual contact is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic diagram of the inner cavity structure of the material storage box of the present invention; Figure 3 It is a schematic diagram of the structure of the material storage barrel of the present invention; Figure 4 It is a cross-sectional structural schematic diagram of the present invention; Figure 5 It is a structural schematic diagram of the second mounting frame of the present invention; Figure 6 It is a schematic diagram of the cross-sectional structure of the fixing column of the present invention.

[0017] In the figure: 1. material storage structure; 11. material storage box; 111. rolling groove; 12. No. 1 driving motor; 121. transmission column; 122. shift plate; 123. placement groove; 124. roller bracket; 2. crushing and grinding structure; 21. crushing box; 211. docking port; 22. No. 2 driving motor; 221. crushing head; 23. material discharge port; 3. barrel structure; 31. material storage barrel; 311. sliding pipe mouth; 312. sliding pipe; 313. fixed plate; 314. side plate; 315. rubber buffer plate; 32. limit frame; 321. threaded rod ; 322, bevel gear No. 1; 33, mounting frame No. 1; 331, drive motor No. 3; 332, bevel gear No. 2; 333, bevel gear No. 3; 334, rotating rod No. 1; 335, bevel gear No. 4; 34, discharge port; 341, fixed column; 342, rotating rod No. 2; 343, threaded leaf; 344, rotating rod No. 3; 345, bevel gear No. 5; 346, bevel gear No. 6; 347, drive motor No. 4; 35, mounting frame No. 2; 351, bevel gear No. 7; 352, rotating rod No. 4; 4, rotating structure. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] like Figure 1 - Figure 6 As shown, a storage device for waste lithium-ion battery raw materials comprises a storage structure 1, the top of which is fixedly connected to a crushing and grinding structure 2, the outer wall of the top of the storage structure 1 is bolted with a rotating structure 4, the inner side of the rotating structure 4 is bolted with a barrel structure 3, the rotating structure 4 comprises a No. 1 driving motor 12, one end of the No. 1 driving motor 12 is driven at the bottom and is located in the inner cavity of a storage box 11 and is connected to a transmission column 121 for transmission, one end of the bottom of the transmission column 121 is bolted with a shift disk 122, a placement groove 123 is provided on the surface of the top of the shift disk 122, a storage barrel 31 is bolted on the bottom of the inner side of the placement groove 123, a rolling groove 111 is provided at the bottom of the inner cavity of the storage box 11 and on the lower surface of the shift disk 122, and a roller bracket 124 is bolted on the outer wall of the bottom of the shift disk 122 and on the inner side of the rolling groove 111.

[0020] It should be noted that, in this embodiment, by starting the No. 1 driving motor 12, one end of the bottom transmission of the No. 1 driving motor 12 is used to drive the driving column 121 inside the storage box 11 to rotate, so that the shift plate 122 at the bottom of the driving column 121 is rotated, and the rotation of the shift plate 122 drives the roller bracket 124 at the bottom of the shift plate 122 to roll on the inside of the rolling groove 111, thereby adjusting the position of the storage barrel 31 inside the placement groove 123.

[0021] The top of the material storage barrel 31 is fixedly connected to a sliding nozzle 311, and the top of the material storage barrel 31 and the outer wall on both sides of the sliding nozzle 311 are fixedly connected to the limiting frame 32, and the outer wall bolts on one side of the top of the material storage barrel 31 are installed with a No. 1 mounting frame 33, and the outer wall bolts on the top of the No. 1 mounting frame 33 are installed with a No. 3 driving motor 331, and one end of the No. 3 driving motor 331 is driven at the bottom and located on the lower surface of the No. 1 mounting frame 33 and is transmission-connected with a No. 2 bevel gear 332, and the outer wall of the No. 2 bevel gear 332 is meshed with the No. 3 bevel gear 333, and the outer wall of the inner side of the No. 2 bevel gear 332 is fixedly sleeved with a No. 1 rotating rod 334, and the outer walls of both ends of the No. 1 rotating rod 334 are fixedly sleeved with a No. 4 bevel gear 335, and the outer wall of the No. 4 bevel gear 335 is meshed with a No. 7 bevel gear 351, and the outer wall of one side of the No. 7 bevel gear 351 is installed with a No. 4 rotating rod The outer wall of the No. 4 rotating rod 352 is rotatably connected to the No. 2 mounting frame 35, the bottom of the No. 2 mounting frame 35 is bolted to the top of the storage barrel 31, the outer wall of the No. 7 bevel gear 351 is meshed with the No. 1 bevel gear 322, the inner side of the No. 1 bevel gear 322 is fixedly sleeved with a threaded rod 321, one end of the top of the threaded rod 321 is rotatably connected to the top of the inner side of the limiting frame 32, one end of the bottom of the threaded rod 321 is rotatably connected to the top of the storage barrel 31, the inner side of the sliding nozzle 311 is slidably connected with a sliding pipe 312, the outer wall of the top of the sliding pipe 312 is fixedly sleeved with a fixed plate 313, the outer wall of the bottom of the fixed plate 313 is bolted with a rubber buffer plate 315, the outer walls on both sides of the fixed plate 313 are fixedly connected with side plates 314, and the inner sides of the outer walls on both sides of the side plates 314 are threadedly connected to the outer walls of the threaded rod 321.

[0022] It should be noted that, in the present embodiment, by starting the third driving motor 331, the second bevel gear 332 on the inner side of the bottom of the first mounting frame 33 is driven to rotate, and then the outer wall of the second bevel gear 332 is meshed with the outer wall of the third bevel gear 333 to drive the first rotating rod 334 to rotate, and when the first rotating rod 334 rotates, the fourth bevel gear 335 at both ends is driven to rotate, so that the outer wall of the fourth bevel gear 335 is meshed with the seventh bevel gear 351, driving the fourth rotating rod 352 to rotate, so that the other end of the fourth rotating rod 352 is mounted The seventh bevel gear 351 meshes with the first bevel gear 322, and when the outer wall of the meshing bevel gear 322 rotates through the top of the threaded rod 321 and the top of the inner side of the limit frame 32 and the top of the limit frame 32, the inner side of the first bevel gear 322 drives the threaded rod 321 to rotate, and when the threaded rod 321 rotates, the outer wall of the threaded rod 321 and the inner side of the outer wall of the side plate 314 are threadedly rotated, thereby driving the sliding pipe 312 to slide and rise on the inner side of the sliding pipe mouth 311, and docking the inner side of the top of the sliding pipe 312 with the inner side of the docking port 211.

[0023] The crushing and grinding structure 2 includes a crushing box 21 bolted to the top of the storage box 11, a No. 2 driving motor 22 is bolted to the top of the crushing box 21, a feed port 23 is bolted to the top of the crushing box 21 and located on one side of the No. 2 driving motor 22, a crushing head 221 is transmission-connected to one end of the bottom transmission of the No. 2 driving motor 22 and located in the inner cavity of the crushing box 21, and a docking port 211 is bolted to the bottom of the crushing box 21.

[0024] It should be noted that, in the present embodiment, the waste lithium-ion battery raw materials are placed into the discharge port 23 and enter the inner cavity of the crushing box 21, and then the No. 2 driving motor 22 is started, and the crushing head 221 is driven to rotate by one end of the bottom transmission of the No. 2 driving motor 22, so that the crushing head 221 rotates the inner cavity of the crushing box 21, thereby crushing and grinding the waste lithium-ion battery raw materials, and flowing into the docking port 211, and entering the inner side of the sliding pipe 312 through the inner side of the docking port 211.

[0025] The barrel structure 3 includes a storage barrel 31, one end of the bottom of the storage barrel 31 is bolted with a discharge port 34, the inner wall of the discharge port 34 is bolted with a fixing column 341, the outer wall of one end of the fixing column 341 and the outer wall of the discharge port 34 is bolted with a No. 4 driving motor 347, one end of the No. 4 driving motor 347 is driven and is located in the inner cavity of the fixing column 341 and is connected to a No. 3 rotating rod 344, one end of the No. 3 rotating rod 344 is bolted with a No. 6 bevel gear 346, the outer wall of the No. 6 bevel gear 346 is meshed with a No. 5 bevel gear 345, the inner side of the No. 5 bevel gear 345 is fixedly sleeved with a No. 2 rotating rod 342, and the outer wall of the No. 2 rotating rod 342 and the upper surface of the fixing column 341 are fixedly connected with a threaded leaf 343.

[0026] It should be noted that, in this embodiment, by starting the No. 4 driving motor 347, one end of the transmission of the No. 4 driving motor 347 drives the No. 3 rotating rod 344 to rotate, thereby using one end of the No. 3 rotating rod 344 to drive the No. 6 bevel gear 346 to rotate, so that the outer wall of the No. 6 bevel gear 346 can be engaged with the outer wall of the No. 5 bevel gear 345 to drive the No. 2 rotating rod 342 to rotate, and the threaded leaves 343 installed on the outer wall of the No. 2 rotating rod 342 guide the waste lithium-ion battery raw materials in the inner cavity of the storage barrel 31 to the inner side of the discharge port 34 for discharge.

[0027] The working principle of the present invention is as follows: by starting the No. 1 driving motor 12, the transmission end at the bottom of the No. 1 driving motor 12 is used to drive the driving column 121 inside the storage box 11 to rotate, so that the shift plate 122 at the bottom of the driving column 121 rotates, and when the shift plate 122 rotates, the roller bracket 124 at the bottom of the shift plate 122 is driven to roll on the inner side of the rolling groove 111, thereby adjusting the position of the storage barrel 31 inside the placement groove 123. By starting the No. 3 driving motor 331, the No. 2 bevel gear 332 on the inner side of the bottom of the No. 1 mounting frame 33 is driven to rotate, and then the outer wall of the No. 2 bevel gear 332 is meshed with the outer wall of the No. 3 bevel gear 333 to drive the No. 1 rotating rod 334 to rotate, and when the No. 1 rotating rod 334 rotates, the No. 4 bevel gear 335 at both ends is driven to rotate, so that the outer wall of the No. 4 bevel gear 335 is meshed with the No. 7 bevel gear 351, driving the No. 4 rotating rod 352 to rotate, so that the No. 7 bevel gear installed at the other end of the No. 4 rotating rod 352 is driven to rotate. 351 meshes with the No. 1 bevel gear 322, and when the outer wall of the meshing No. 1 bevel gear 322 rotates through the top of the threaded rod 321 and the top of the inner side of the limit frame 32 and the top of the limit frame 32, the inner side of the No. 1 bevel gear 322 drives the threaded rod 321 to rotate, and when the threaded rod 321 rotates, the outer wall of the threaded rod 321 and the inner side of the outer wall of the side plate 314 are threadedly rotated, thereby driving the sliding pipe 312 to slide and rise on the inner side of the sliding pipe mouth 311, and the inner side of the top of the sliding pipe 312 is docked with the inner side of the docking port 211, The waste lithium-ion battery raw materials are placed into the discharge port 23 and enter the inner cavity of the crushing box 21, and then the second drive motor 22 is started, and the crushing head 221 is driven to rotate by one end of the bottom transmission of the second drive motor 22, so that the crushing head 221 rotates the inner cavity of the crushing box 21, thereby crushing and grinding the waste lithium-ion battery raw materials, and flowing into the docking port 211, and entering the inner side of the sliding pipe 312 through the inner side of the docking port 211, By starting the No. 4 driving motor 347, one end of the transmission of the No. 4 driving motor 347 drives the No. 3 rotating rod 344 to rotate, so that one end of the No. 3 rotating rod 344 drives the No. 6 bevel gear 346 to rotate, so that the outer wall of the No. 6 bevel gear 346 can be engaged with the outer wall of the No. 5 bevel gear 345 to drive the No. 2 rotating rod 342 to rotate, and the threaded leaves 343 installed on the outer wall of the No. 2 rotating rod 342 guide the waste lithium-ion battery raw materials in the inner cavity of the storage barrel 31 to the inner side of the discharge port 34 for discharge.

[0028] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A material storage device for waste lithium-ion battery raw materials, comprising a material storage structure (1), a crushing and grinding structure (2) is fixedly connected to the top of the material storage structure (1), a rotating structure (4) is bolted to the outer wall of the top of the material storage structure (1), and a barrel structure (3) is bolted to the inner side of the rotating structure (4), characterized in that: The rotating structure (4) comprises a first driving motor (12); One end of the bottom transmission of the No. 1 driving motor (12) is located in the inner cavity of the material storage box (11) and is connected to a transmission column (121); a shift plate (122) is bolted to one end of the bottom of the transmission column (121); a placement groove (123) is provided on the top surface of the shift plate (122); a material storage barrel (31) is bolted to the bottom of the placement groove (123); A rolling groove (111) is provided at the bottom of the inner cavity of the material storage box (11) and located on the lower surface of the shift plate (122), and a roller bracket (124) is boltedly mounted on the outer wall of the bottom of the shift plate (122) and located on the inner side of the rolling groove (111).

2. A storage device for waste lithium-ion battery raw materials according to claim 1, characterized in that: The top of the material storage barrel (31) is fixedly connected to a sliding pipe mouth (311), the top of the material storage barrel (31) and the outer walls on both sides of the sliding pipe mouth (311) are fixedly connected to a limiting frame (32), and the outer wall on one side of the top of the material storage barrel (31) is bolted to a No. 1 mounting frame (33).

3. A storage device for waste lithium-ion battery raw materials according to claim 2, characterized in that: A No. 3 driving motor (331) is bolted to the outer wall of the top of the No. 1 mounting frame (33); a No. 2 bevel gear (332) is drivingly connected to one end of the bottom transmission of the No. 3 driving motor (331) and located on the lower surface of the No. 1 mounting frame (33); a No. 3 bevel gear (333) is meshed with the outer wall of the No. 2 bevel gear (332); a No. 1 rotating rod (334) is fixedly sleeved on the outer wall inside the No. 2 bevel gear (332); and a No. 4 bevel gear (335) is fixedly sleeved on the outer walls at both ends of the No. 1 rotating rod (334).

4. A storage device for waste lithium-ion battery raw materials according to claim 3, characterized in that: The outer wall of the fourth bevel gear (335) is meshed with the seventh bevel gear (351), the outer wall of one side of the seventh bevel gear (351) is mounted with a fourth rotating rod (352), and the outer wall of the fourth rotating rod (352) is rotatably connected to the second mounting frame (35).

5. A storage device for waste lithium-ion battery raw materials according to claim 4, characterized in that: The bottom of the No. 2 mounting frame (35) is bolted to the top of the material storage barrel (31); the outer wall of the No. 7 bevel gear (351) is meshed with the No. 1 bevel gear (322); a threaded rod (321) is fixedly sleeved on the inner side of the No. 1 bevel gear (322); one end of the top of the threaded rod (321) is rotatably connected to the top of the inner side of the limiting frame (32).

6. A storage device for waste lithium-ion battery raw materials according to claim 5, characterized in that: One end of the bottom of the threaded rod (321) is rotatably connected to the top of the material storage barrel (31); the inner side of the sliding pipe mouth (311) is slidably connected to a sliding pipe (312); a fixing plate (313) is fixedly sleeved on the outer wall of the top of the sliding pipe (312); a rubber buffer plate (315) is bolted to the outer wall of the bottom of the fixing plate (313); the outer walls on both sides of the fixing plate (313) are fixedly connected to side plates (314); and the inner sides of the outer walls on both sides of the side plates (314) are threadedly connected to the outer walls of the threaded rod (321).

7. A storage device for waste lithium-ion battery raw materials according to claim 1, characterized in that: The crushing and grinding structure (2) comprises a crushing box (21) bolted to the top of the material storage box (11), and a second drive motor (22) is bolted to the top of the crushing box (21).

8. A storage device for waste lithium-ion battery raw materials according to claim 7, characterized in that: A feeding port (23) is bolted to the top of the crushing box (21) and located on one side of the second drive motor (22); a crushing head (221) is transmission-connected to one end of the bottom transmission of the second drive motor (22) and located in the inner cavity of the crushing box (21); and a docking port (211) is bolted to the bottom of the crushing box (21).

9. A storage device for waste lithium-ion battery raw materials according to claim 1, characterized in that: The barrel structure (3) comprises a material storage barrel (31), a discharge port (34) is bolted to one end of the bottom of the material storage barrel (31), a fixing column (341) is bolted to the inner wall of the discharge port (34), a fourth drive motor (347) is bolted to the outer wall of one end of the fixing column (341) and located at the discharge port (34), and a third rotating rod (344) is transmission-connected to one end of the transmission of the fourth drive motor (347) and located at the inner cavity of the fixing column (341).

10. A storage device for waste lithium-ion battery raw materials according to claim 9, characterized in that: A sixth bevel gear (346) is bolted to one end of the third rotating rod (344); a fifth bevel gear (345) is meshed with an outer wall of the sixth bevel gear (346); a second rotating rod (342) is fixedly sleeved on the inner side of the fifth bevel gear (345); and a threaded leaf (343) is fixedly connected to the outer wall of the second rotating rod (342) and located on the upper surface of the fixing column (341).

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