Mining permanent magnet disc type motor rotor forming processing device

Abstract

The invention relates to the technical field of motors, in particular to a mining permanent magnet disc type motor rotor forming machining device which comprises a machining chamber, a detection chamber is fixedly connected to the bottom of the machining chamber, and a die-casting column used for die-casting machining is arranged on the inner side of the machining chamber. A clamping assembly used for clamping a formed rotor part is arranged on the inner side of the machining chamber, a sliding column used for adjusting the clamping assembly is arranged on the inner side of the machining chamber, and a detection assembly used for detecting correction of a center hole is arranged on the inner side of the detection chamber. The clamping assembly and the sliding column are used for fixing the rotor part subjected to die casting, and meanwhile the detection assembly is used for correcting a center hole of the rotor part.

Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular to a rotor forming and processing device for a permanent magnet magnetic disc type motor for mining. Background Art

[0002] Mining permanent magnet disk motor is a type of motor designed for harsh environments such as mines. It usually adopts a compact structure design to meet the needs of narrow spaces such as mines. Its structure mainly includes stators, rotors, permanent magnets, bearings, end covers and other components. Among them, permanent magnets are the core components of mining permanent magnet disk motors. The quality of their performance directly affects the efficiency and reliability of the motor. Permanent magnets usually use high-performance rare earth permanent magnet materials, such as neodymium iron boron, which have high magnetic energy product and coercive force, and can maintain stable magnetic properties in harsh environments.

[0003] In addition, after the stamping and die-casting process steps of the permanent magnet motor rotor, the central axis position of the rotor needs to be roller polished and corrected. After the rotor is die-cast, the staff needs to place the center hole of the die-cast rotor on specific equipment for inspection, which will take up a large area.

[0004] In view of this, we propose a rotor forming and processing device for a permanent magnet magnetic disc motor for mining use. Summary of the invention

[0005] The object of the present invention is to provide a permanent magnet magnetic disc type motor rotor forming and processing device for mining use, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides a rotor forming processing device for a permanent magnet magnetic disc motor for mining, comprising a processing chamber, a detection chamber fixedly connected to the bottom of the processing chamber, a die-casting column for die-casting processing arranged inside the processing chamber, a clamping assembly for clamping a formed rotor component arranged inside the processing chamber, a sliding column for adjusting the clamping assembly arranged inside the processing chamber, and a detection assembly for detecting center hole correction arranged inside the detection chamber, wherein:

[0007] The die-casting column slides, the clamping assembly and the sliding column are used to fix the die-cast rotor component, and the detection assembly is used to calibrate the center hole of the rotor component.

[0008] As a preferred embodiment of the present invention, the outer wall of the processing chamber is fixedly connected to a support frame, the inner side of the processing chamber is fixedly connected to an electric slide rail, the inner side of the electric slide rail is slidably connected to a die-casting column, the bottom of the die-casting column is fixedly connected to a die-casting disk, and the bottom of the electric slide rail is fixedly connected to a platform.

[0009] As a preferred embodiment of the present invention, a guard plate is fixedly connected to the inner side of the detection chamber, a conveying track is arranged on the inner side of the guard plate, a fixed column No. 1 is fixedly connected to the inner side of the guard plate, a push plate is fixedly connected to the inner side of the guard plate, the push plate is located on one side of the fixed column No. 1, and a regular plate is fixedly connected to the bottom of the processing chamber.

[0010] As a preferred embodiment of the present invention, the bottom of the electric slide rail is fixedly connected to a fixed slide rail, the inner side of the fixed slide rail is slidably connected to a sliding column, one side of the sliding column is fixedly connected to a No. 3 fixed column, the No. 3 fixed column is fixedly connected to a No. 1 rotating rod at an end away from the sliding column, the lower end of the No. 1 rotating rod is fixedly connected to the output end of the No. 1 motor, and the No. 1 rotating rod is fixedly connected to a No. 1 gear at an end away from the No. 1 motor.

[0011] As a preferred embodiment of the present invention, a No. 2 fixed column is fixedly connected to one side of the fixed slide rail, and a No. 1 rack is fixedly connected to the bottom of the No. 2 fixed column at an end away from the fixed slide rail, and the No. 1 rack is meshingly connected with the No. 1 gear.

[0012] As a preferred embodiment of the present invention, a No. 2 rack is fixedly connected to the top of the lower end of the sliding column, a bending column is fixedly connected to the bottom of the sliding column, a threaded rod is fixedly connected to the end of the bending column away from the sliding column, and a blocking plate is threadedly connected to the threaded rod.

[0013] As a preferred embodiment of the present invention, the clamping assembly includes a No. 1 fixed plate, and the No. 1 fixed plate is fixedly connected to the bottom of the platform through a column. A turntable is rotatably connected to the inner side of the No. 1 fixed plate, and a No. 2 gear is fixedly connected to the bottom of the turntable. The No. 2 gear is meshed with a No. 2 rack, and the top of the turntable is fixedly connected to the No. 2 fixed plate.

[0014] As a preferred embodiment of the present invention, the top peripheral position of the No. 1 fixed disk is rotatably connected to a No. 1 connecting rod, and the No. 1 connecting rod is fixedly connected to a raised column at the bottom of the end away from the No. 1 fixed disk. The raised column is located at the peripheral position of the end of the No. 1 connecting rod away from the No. 1 fixed disk, and the raised column is rotatably connected between the turntable and the No. 2 fixed disk.

[0015] As a preferred embodiment of the present invention, the detection component includes a No. 2 motor, the No. 2 motor is fixedly connected to the outer wall of the detection chamber, the output end of the No. 2 motor is fixedly connected to a No. 2 rotating rod, the No. 2 rotating rod is in a retractable state, the No. 2 rotating rod is slidably connected to the inner side of the No. 1 fixed column, and both sides of the outer wall of the No. 2 rotating rod are fixedly connected with connecting columns, and the connecting columns pass through the No. 1 fixed column.

[0016] As a preferred embodiment of the present invention, the connecting column is provided with a No. 2 connecting rod at one end away from the No. 2 rotating rod, and the No. 2 connecting rod is provided with a No. 1 arch hole on the surface of one end close to the connecting column, and the connecting column is movably connected to the No. 1 arch hole at one end close to the No. 2 connecting rod, and the No. 2 connecting rod is rotatably connected to the inner side of the guard plate at one end away from the connecting column, and the middle end of the No. 2 connecting rod is provided with a No. 2 arch hole, wherein:

[0017] The inner side of the guard plate is rotatably connected to gear number three, and the gear number three is fixedly connected to a protruding block on the side away from the guard plate, and the protruding block is slidably connected in the arch hole number two, and one side of the gear number three is meshingly connected to gear number four, and the gear number four is fixedly connected to the rotating shaft of the conveying track.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the motor rotor forming processing device, the No. 1 motor drives the No. 1 rotating rod and the No. 1 gear to rotate together, which will cause the No. 1 gear to slide along the edge of the No. 1 rack, and the No. 3 fixed column drives the sliding column to slide together, and the sliding column drives the No. 2 racks on both sides to slide to one side. At the same time, the No. 2 racks on both sides drive the No. 2 gear, the turntable and the No. 2 fixed plate to rotate together. During the rotation of the turntable, the end of the No. 1 connecting rod will be driven to clamp the rotor part. After the final die-casting is completed, the No. 1 motor will drive it again to release the rotor part. In the process of sliding the sliding column, it will also drive the training car blocking plate to expand, so that the rotor part will finally fall onto the regular plate.

[0020] 2. In the motor rotor forming processing device, the No. 4 gear is driven to rotate together with the conveying track shaft, and the No. 4 gear will drive the No. 3 gear to rotate together. During the rotation of the No. 3 gear, the raised block will be driven to rotate around it. When the raised block rotates, it will slide in the No. 2 arch hole, and drive the No. 2 connecting rod, the connecting column and the No. 2 connecting rod to slide in the No. 1 fixed column. When the No. 2 rotating rod slides to the inner side of the regular plate, the end of the No. 2 rotating rod will pass through the center hole position of the rotor part, and slide toward the No. 2 motor again driven by the raised block. The No. 2 rotating rod is rotated under the drive of the No. 2 motor, and the No. 2 rotating rod is used to detect the rotation of the rotor part, and observe whether it is tilted during the rotation process in the external controller. After the detection is completed, the rotor part is removed by the resistance of the push plate, and falls on the conveying track, and finally transported out. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an overall three-dimensional schematic diagram of the motor rotor forming processing device of the present invention;

[0022] Figure 2 It is an overall cross-sectional schematic diagram of the motor rotor forming processing device of the present invention;

[0023] Figure 3 It is a schematic internal stereoscopic diagram of the motor rotor forming processing device of the present invention;

[0024] Figure 4 It is a schematic diagram of the internal three-dimensional details of the motor rotor forming processing device of the present invention;

[0025] Figure 5 It is a three-dimensional schematic diagram of the internal details of the motor rotor forming processing device of the present invention;

[0026] Figure 6 A three-dimensional schematic diagram of the clamping assembly of the motor rotor forming processing device of the present invention

[0027] Figure 7 It is a three-dimensional schematic diagram of a detection component of the motor rotor forming processing device of the present invention;

[0028] Figure 8 A three-dimensional schematic diagram of the details of the detection component of the motor rotor forming processing device of the present invention

[0029] The meaning of each number in the figure is:

[0030] 1. Processing room; 11. Inspection room; 111. Guard plate; 112. Conveying track; 113. Fixed column No. 1; 114. Push plate; 115. Regular plate; 12. Support frame; 13. Electric slide rail; 131. Die-cast column; 132. Die-cast plate; 14. Platform; 2. Fixed slide rail; 21. Sliding column; 22. Fixed column No. 2; 221. Rack No. 1; 23. Fixed column No. 3; 231. Rotating rod No. 1; 232. Gear No. 1; 233. Motor No. 1; 24. Rack No. 2; 25. Bending column; 251. Threaded rod; 252. Blocking plate;

[0031] 3. Clamping assembly; 31. Fixed plate No. 1; 311. Connecting rod No. 1; 312. Raised column; 32. Turntable; 321. Gear No. 2; 322. Fixed plate No. 2; 41. Motor No. 2; 42. Turntable No. 2; 43. Connecting column; 44. Connecting rod No. 2; 441. Arch hole No. 1; 442. Arch hole No. 2; 45. Gear No. 3; 46. Gear No. 4. DETAILED DESCRIPTION

[0032] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] Embodiment 1

[0035] See also Figure 1-8 As shown, the present embodiment provides a mining permanent magnet magnetic disc motor rotor forming processing device, comprising a processing chamber 1, the bottom of the processing chamber 1 is fixedly connected to a detection chamber 11, a die-casting column 131 for die-casting processing is arranged on the inner side of the processing chamber 1, a clamping assembly 3 for clamping the formed rotor component is arranged on the inner side of the processing chamber 1, a sliding column 21 for adjusting the clamping assembly 3 is arranged on the inner side of the processing chamber 1, and a detection assembly 4 for detecting center hole correction is arranged on the inner side of the detection chamber 11, wherein: the die-cast rotor component is fixed by sliding of the die-casting column 131, and the center hole of the rotor component is corrected by the clamping assembly 3 and the sliding column 21, and the detection assembly 4 is used to correct the center hole of the rotor component.

[0036] like Figure 2-Figure 3 The outer wall of the processing chamber 1 is fixedly connected to a support frame 12, the inner side of the processing chamber 1 is fixedly connected to an electric slide rail 13, the inner side of the electric slide rail 13 is slidably connected to a die-casting column 131, the bottom of the die-casting column 131 is fixedly connected to a die-casting disk 132, the bottom of the electric slide rail 13 is fixedly connected to a platform 14, the inner side of the detection chamber 11 is fixedly connected to a guard plate 111, the inner side of the guard plate 111 is provided with a conveying track 112, the inner side of the guard plate 111 is fixedly connected to a fixed column No. 113, the inner side of the guard plate 111 is fixedly connected to a push plate 114, and the push plate 114 is located on one side of the fixed column No. 113, and the bottom of the processing chamber 1 is fixedly connected to a regular plate 115.

[0037] like Figure 4-Figure 5As shown, the bottom of the electric slide rail 13 is fixedly connected to a fixed slide rail 2, the inner side of the fixed slide rail 2 is slidably connected to a sliding column 21, one side of the sliding column 21 is fixedly connected to a third fixed column 23, the third fixed column 23 is fixedly connected to a first rotating rod 231 at one end away from the sliding column 21, the lower end of the first rotating rod 231 is fixedly connected to the output end of the first motor 233, the first rotating rod 231 is fixedly connected to a first gear 232 at one end away from the first motor 233, and the fixed slide rail A No. 2 fixed column 22 is fixedly connected to one side of the sliding column 2, and a No. 1 rack 221 is fixedly connected to the bottom of the No. 2 fixed column 22 at the end away from the fixed slide rail 2, and the No. 1 rack 221 is meshed with the No. 1 gear 232. A No. 2 rack 24 is fixedly connected to the top of the lower end of the sliding column 21, and a bending column 25 is fixedly connected to the bottom of the sliding column 21. The bending column 25 is fixedly connected to a threaded rod 251 at the end away from the sliding column 21, and the thread of the threaded rod 251 is connected to a blocking plate 252.

[0038] like Figure 6 As shown, the clamping assembly 3 includes a No. 1 fixed disk 31, which is fixedly connected to the bottom of the platform 14 through a column, and the inner side of the No. 1 fixed disk 31 is rotatably connected to a turntable 32, and the bottom of the turntable 32 is fixedly connected to a No. 2 gear 321, and the No. 2 gear 321 is meshed with the No. 2 rack 24. The top of the turntable 32 is fixedly connected to the No. 2 fixed disk 322, and the top peripheral position of the No. 1 fixed disk 31 is rotatably connected to a No. 1 connecting rod 311, and the No. 1 connecting rod 311 is fixedly connected to a protruding column 312 at the bottom of the end away from the No. 1 fixed disk 31, and the protruding column 312 is located at a peripheral position of the end of the No. 1 connecting rod 311 away from the No. 1 fixed disk 31, and the protruding column 312 is rotatably connected between the turntable 32 and the No. 2 fixed disk 322.

[0039] From this we can see that Figure 2-Figure 6As shown, the staff continuously transports the steel sheet between the die-casting column 131 and the platform 14 in the processing chamber 1, and continuously presses down through the die-casting column 131, continuously presses the steel sheet down to the inner side of the clamping assembly 3, and finally clamps it to the top of the blocking plate 252. After die-casting to a specified thickness, the No. 1 rotating rod 231 and the No. 1 gear 232 rotate together under the drive of the No. 1 motor 233. Under the influence of the No. 1 rack 221, the No. 1 gear 232 will slide along the edge of the No. 1 rack 221. During the sliding process of the No. 1 gear 232, the sliding column 21 will be driven to slide together through the No. 3 fixed column 23, and the sliding column 21 will drive the No. 2 racks on both sides. 24 slides to one side, and at the same time, the No. 2 racks 24 on both sides will drive the No. 2 gear 321, the turntable 32 and the No. 2 fixed plate 322 to rotate together during the sliding process. During the rotation of the turntable 32, the end of the No. 1 connecting rod 311 close to the turntable 32 will be driven to rotate to one side and the side of the No. 1 connecting rod 311 close to the turntable 32 will be rotated inward, so that the ends of the multiple No. 1 connecting rods 311 clamp the rotor component. After the final die-casting is completed, the No. 1 motor 233 is driven again to release the rotor component, and in the process of the sliding column 21 sliding, it will also drive the training blocking plate 252 to expand, so that the rotor component finally falls on the regular plate 115.

[0040] Embodiment 2

[0041] Different from the first embodiment, in order to realize the simultaneous execution of die casting and center hole detection, as shown in FIG. Figure 7-Figure 8 As shown, the detection component 4 includes a No. 2 motor 41, which is fixedly connected to the outer wall of the detection chamber 11, and the output end of the No. 2 motor 41 is fixedly connected to the No. 2 rotating rod 42, which is in a retractable state, and the No. 2 rotating rod 42 is slidably connected to the inner side of the No. 1 fixed column 113, and both sides of the outer wall of the No. 2 rotating rod 42 are fixedly connected to connecting columns 43, and the connecting columns 43 penetrate the No. 1 fixed column 113, and the connecting column 43 is provided with a No. 2 connecting rod 44 at the end away from the No. 2 rotating rod 42, and the No. 2 connecting rod 44 is provided with a No. 1 arch hole 441 on the surface of the end close to the connecting column 43 The connecting column 43 is movably connected to the No. 1 arch hole 441 at one end close to the No. 2 connecting rod 44, and the No. 2 connecting rod 44 is rotatably connected to the inner side of the guard plate 111 at the end away from the connecting column 43. The middle end of the No. 2 connecting rod 44 is provided with a No. 2 arch hole 442, wherein: the inner side of the guard plate 111 is rotatably connected with a No. 3 gear 45, and the No. 3 gear 45 is fixedly connected with a protruding block on the side away from the guard plate 111, and the protruding block is slidably connected in the No. 2 arch hole 442, and one side of the No. 3 gear 45 is meshingly connected with a No. 4 gear 46, and the No. 4 gear 46 is fixedly connected to the rotating shaft of the conveying track 112.

[0042] From this we can see that Figure 7-Figure 8As shown, under the rotation of the conveying track 112 shaft, the fourth gear 46 is driven to rotate together, and the fourth gear 46 will drive the third gear 45 to rotate together. During the rotation of the third gear 45, the protrusion block will be driven to rotate around it. When the protrusion block rotates, it will slide in the second arch hole 442, and drive the second connecting rod 44, the connecting column 43 and the second rotating rod 42 to slide together in the first fixed column 113, and when the second rotating rod 42 slides to the inner side of the regular plate 115, the end of the second rotating rod 42 will pass through the center hole position of the rotor part, and slide toward the direction of the second motor 41 again driven by the protrusion block, and the second rotating rod 42 is rotated under the drive of the second motor 41, and the second rotating rod 42 is rotated by the second rotating rod 42, and the rotor part is rotated and detected by the second rotating rod 42, and whether it is tilted during the rotation process is observed in the external controller. After the detection is completed, the rotor part is removed by the resistance of the push plate 114, and falls on the conveying track 112, and finally transported out.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit 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. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A permanent magnet magnetic disc motor rotor forming and processing device for mining, comprising a processing chamber (1), characterized in that: The bottom of the processing chamber (1) is fixedly connected to a detection chamber (11); a die-casting column (131) for die-casting processing is arranged on the inner side of the processing chamber (1); a clamping assembly (3) for clamping a formed rotor component is arranged on the inner side of the processing chamber (1); a sliding column (21) for adjusting the clamping assembly (3) is arranged on the inner side of the processing chamber (1); and a detection assembly (4) for detecting center hole correction is arranged on the inner side of the detection chamber (11), wherein: The die-cast rotor component is fixed by sliding the die-cast column (131) using the clamping assembly (3) and the sliding column (21), and the center hole of the rotor component is calibrated using the detection assembly (4).

2. The rotor forming and processing device for a permanent magnet magnetic disc motor for mining use according to claim 1 is characterized in that: The outer wall of the processing chamber (1) is fixedly connected to a support frame (12), the inner side of the processing chamber (1) is fixedly connected to an electric slide rail (13), the inner side of the electric slide rail (13) is slidably connected to a die-casting column (131), the bottom of the die-casting column (131) is fixedly connected to a die-casting plate (132), and the bottom of the electric slide rail (13) is fixedly connected to a platform (14).

3. The rotor forming and processing device for a permanent magnet magnetic disc motor for mining use according to claim 2 is characterized in that: A guard plate (111) is fixedly connected to the inner side of the detection chamber (11), a conveying track (112) is arranged on the inner side of the guard plate (111), a first fixing column (113) is fixedly connected to the inner side of the guard plate (111), a push plate (114) is fixedly connected to the inner side of the guard plate (111), the push plate (114) is located on one side of the first fixing column (113), and a regularization plate (115) is fixedly connected to the bottom of the processing chamber (1).

4. The rotor forming and processing device for a permanent magnet magnetic disc motor for mining use according to claim 3 is characterized in that: The bottom of the electric slide rail (13) is fixedly connected to a fixed slide rail (2), the inner side of the fixed slide rail (2) is slidably connected to a sliding column (21), one side of the sliding column (21) is fixedly connected to a third fixed column (23), the third fixed column (23) is fixedly connected to a first rotating rod (231) at an end away from the sliding column (21), the lower end of the first rotating rod (231) is fixedly connected to an output end of a first motor (233), and the first rotating rod (231) is fixedly connected to a first gear (232) at an end away from the first motor (233).

5. The rotor forming and processing device for a permanent magnet magnetic disc motor for mining use according to claim 4 is characterized in that: A second fixing column (22) is fixedly connected to one side of the fixed slide rail (2), and a first rack (221) is fixedly connected to the bottom of the second fixing column (22) at an end away from the fixed slide rail (2), and the first rack (221) is meshingly connected to a first gear (232).

6. The rotor forming and processing device for a permanent magnet magnetic disc motor for mining use according to claim 5 is characterized in that: The top of the lower end of the sliding column (21) is fixedly connected to a second rack (24), the bottom of the sliding column (21) is fixedly connected to a bending column (25), the bending column (25) is fixedly connected to a threaded rod (251) at one end away from the sliding column (21), and the threaded connection of the threaded rod (251) is connected to a blocking plate (252).

7. The rotor forming and processing device for a permanent magnet magnetic disc motor for mining use according to claim 6 is characterized in that: The clamping assembly (3) includes a No. 1 fixed disk (31), the No. 1 fixed disk (31) being fixedly connected to the bottom of the platform (14) via a column, a rotating disk (32) being rotatably connected to the inner side of the No. 1 fixed disk (31), a No. 2 gear (321) being fixedly connected to the bottom of the rotating disk (32), the No. 2 gear (321) being meshingly connected to a No. 2 rack (24), and the No. 2 fixed disk (322) being fixedly connected to the top of the rotating disk (32).

8. The rotor forming and processing device for a permanent magnet magnetic disc motor for mining use according to claim 7 is characterized in that: A No. 1 connecting rod (311) is rotatably connected to the top peripheral position of the No. 1 fixed disk (31); a protruding column (312) is fixedly connected to the bottom of the No. 1 connecting rod (311) at one end away from the No. 1 fixed disk (31); the protruding column (312) is located at a peripheral position of the end of the No. 1 connecting rod (311) away from the No. 1 fixed disk (31); and the protruding column (312) is rotatably connected between the rotating disk (32) and the No. 2 fixed disk (322).

9. The rotor forming and processing device for a permanent magnet magnetic disc motor for mining use according to claim 8 is characterized in that: The detection component (4) includes a No. 2 motor (41), the No. 2 motor (41) is fixedly connected to the outer wall of the detection chamber (11), the output end of the No. 2 motor (41) is fixedly connected to a No. 2 rotating rod (42), the No. 2 rotating rod (42) is in a retractable state, the No. 2 rotating rod (42) is slidably connected to the inner side of a No. 1 fixed column (113), and both sides of the outer wall of the No. 2 rotating rod (42) are fixedly connected to connecting columns (43), and the connecting columns (43) penetrate the No. 1 fixed column (113).

10. The rotor forming and processing device for a permanent magnet magnetic disc motor for mining use according to claim 9, characterized in that: The connecting column (43) is provided with a No. 2 connecting rod (44) at one end away from the No. 2 rotating rod (42); the No. 2 connecting rod (44) is provided with a No. 1 arch hole (441) on the surface of one end close to the connecting column (43); the connecting column (43) is movably connected to the No. 1 arch hole (441) at one end close to the No. 2 connecting rod (44); the No. 2 connecting rod (44) is rotatably connected to the inner side of the guard plate (111) at one end away from the connecting column (43); the No. 2 arch hole (442) is provided at the middle end of the No. 2 connecting rod (44), wherein: A third gear (45) is rotatably connected to the inner side of the guard plate (111); a protrusion is fixedly connected to the third gear (45) on a side away from the guard plate (111); the protrusion is slidably connected in the second arch hole (442); a fourth gear (46) is meshingly connected to one side of the third gear (45); the fourth gear (46) is fixedly connected to the rotating shaft of the conveying track (112).

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