Storing and conveying equipment for strip-shaped metal materials for workshop

Abstract

The invention discloses storage and conveying equipment for strip-shaped metal materials for workshops, which belongs to the field of storage and conveying equipment and comprises two track shells. Through the arrangement of the movable rods, the movable rods can extrude the strip-shaped metal plates after the telescopic rods move, on one hand, the strip-shaped metal plates can be limited, and the situation that coatings on the surfaces of the strip-shaped metal plates are damaged due to vertical sliding friction between the strip-shaped metal plates is avoided; the strip-shaped metal plate can be bent and wound conveniently, the radian of the strip-shaped metal plate can be fixed, the strip-shaped metal plate is prevented from being bounced off during transportation or storage, surrounding people and objects are prevented from being harmed, and therefore the storage and transportation safety and the fixing stability of the strip-shaped metal plate are improved. And meanwhile, the stress of the rail shell is reduced, the rail shell can receive larger external impact force, and the safety of the strip-shaped metal plate during storage and transportation is improved through the memory cloth.

Description

Technical Field

[0001] The invention relates to the technical field of storage and conveying equipment, and in particular to a storage and conveying equipment for strip metal materials used in workshops. Background Art

[0002] As the name suggests, strip metal is a flat metal strip, which is widely used in the industrial field. However, the storage and transportation of strip metal is difficult. The existing strip metal materials are rolled up by a winding mechanism for storage and transportation. During the transportation or storage process, the buckles that bind the ends and sides of the rolled strip metal materials fall off and suddenly bounce off, endangering the surrounding people or objects. In order to avoid the danger caused by the strip metal materials bouncing off during storage and transportation, a storage and conveying equipment that can prevent the strip metal materials from bouncing off is proposed. Summary of the invention

[0003] The purpose of the present invention is to solve the problem in the prior art that strip metal materials are damaged by external forces during storage and transportation and bounce off objects that endanger surrounding people, and to propose a storage and transportation device for strip metal materials for workshops.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A storage and conveying device for strip metal materials for workshops, comprising a track shell, wherein there are two track shells, and the two track shells are symmetrically arranged in an upper and lower manner, reinforcement rollers are fixed on opposite sides of the two track shells, and a winding assembly is provided at the terminal end of the track shell that rotates inwardly, a running groove is provided on the surface of the track shell, and one side of the running groove is arranged in a slope, a wire hole is provided on the inner bottom wall of the running groove, a slidable connecting seat is inserted into the inside of the running groove, a clamping seat and a plug connector are respectively fixed at both ends of the connecting seat, two adjacent connecting seats are connected to the plug connector through the clamping seat, one end of the plug connector is inserted into the inner wall of the clamping seat, and a limited opening is provided on the top of the plug connector A positioning groove is provided on the top of the card connection seat, and a hanging buckle is fixed to one end of the connecting seat at one end, and one end of the hanging buckle is connected to the winding assembly through a connecting assembly. A accommodating groove is provided inside the connecting seat, and an opening and closing assembly is hinged at the port of the accommodating groove through an axis, a telescopic assembly is provided between the two opening and closing assemblies, through grooves are provided on both sides of the two accommodating grooves, and a supporting assembly is provided inside the through groove, a sliding groove hole is provided at one end of the telescopic assembly, and a movable rod is inserted into the inner wall of the sliding groove hole, a limiting assembly is provided on the top of the telescopic assembly, a traction assembly is provided on the side of the limiting assembly, and a strip support assembly is provided on the opposite surfaces of the upper and lower connecting seats.

[0006] Preferably, the winding assembly comprises a support plate fixed to the inner rotation terminal of the track housing, the top of the support plate is connected to a traction motor via a fixing seat, and a winding disc is fixed to the output end of the traction motor.

[0007] Preferably, the connecting assembly includes a buckle that is clamped to the inner wall of the suspension buckle through hole, a traction slider is fixed to the top of the buckle, the top of the traction slider is inserted into the inner wall of the wire hole, a traction steel cable is fixed to one end of the traction slider, and one end of the traction steel cable passes through the wire hole and is wrapped around the inner wall of the groove of the traction motor reel.

[0008] Preferably, the opening and closing assembly comprises an opening and closing rod hinged to the inner wall of the accommodating groove, one end of the opening and closing rod is hinged to a roller via an axis, and the side surface of the roller is tightly fitted to the slope of the running groove.

[0009] Preferably, the telescopic assembly includes a telescopic plate connected to one end of the two opening and closing rods through tooth groove engagement, and a return spring is fixed to one end of the telescopic plate inserted into the inner wall of the accommodating groove, and one end of the return spring is tightly fitted to the inner bottom wall of the accommodating groove, and an arc plate is fixed to the outer side of the opening and closing rod, and one end of the arc plate is inserted into the inner wall of the through groove.

[0010] Preferably, the support assembly includes a telescopic leg inserted into the inner wall of the through-slot, one end of the telescopic leg passes through the through-slot and is hinged with a support wheel through an axis, the side of the support wheel is tightly fitted to the inner wall of the running slot, the other end of the telescopic leg is fixed with a compression spring, one end of the compression spring is fixed with a support head, and one end of the support head is tightly fitted to one end of the arc plate.

[0011] Preferably, the limiting assembly includes a corrugated groove on the upper surface of the telescopic plate and a rectangular hole on one side of the connecting seat, the inner wall of the corrugated groove is clamped with a lower closing plate, a pillar is fixed on the top of the lower closing plate, a second return spring is sleeved on the bottom end of the pillar, the upper and lower ends of the second return spring are respectively fixed to the inner top wall of the accommodating groove and the upper surface of the lower closing plate, a connecting rod is fixed to one end of the lower closing plate, one end of the connecting rod passes through the rectangular hole to fix a locking plate, and the bottom of the locking plate is inserted into the inner wall of the limiting groove and the adapter groove.

[0012] Preferably, the traction assembly includes a ring sleeved on the top side of the column, a connecting rope is fixed between two adjacent rings, a cross bar is fixed to one end of one of the connecting ropes, and both ends of the cross bar are fixed to the top inner wall of one of the connecting seats.

[0013] Preferably, the strip support assembly comprises a vertical pole fixed between opposite sides of two upper and lower connecting seats, a sleeve is sleeved on the side of the vertical pole, a support spring is fixed on the side of the sleeve, and an arc plate is fixed at one end of the support spring.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention sets a movable rod, and the movable rod can squeeze the strip metal plate after the telescopic rod moves. First, the strip metal plate can be limited to prevent the strip metal plates from sliding up and down and rubbing against each other to damage the coating on the surface of the strip metal plate. Second, the strip metal plate can be bent to facilitate the bending, rolling and winding of the strip metal plate. Third, the curvature of the strip metal plate can be fixed to prevent the strip metal plate from bouncing off during transportation or storage to endanger surrounding people and objects, thereby improving the safety and fixing stability of the strip metal plate during storage and transportation, while reducing the force on the track shell, so that the track shell can receive greater external impact force, and the memory cloth improves the safety of the strip metal plate during storage and transportation.

[0016] 2. The present invention arranges a snap-in seat and a plug connector, which not only play the role of connecting adjacent connecting seats, but also can be positioned in accordance with the curvature of the strip metal plate bent by the movable rod, so that the strip metal plate can still remain in a rolled-up state after the track shell is damaged by external force impact, further improving the safety and stability of the storage and transportation of the strip metal.

[0017] 3. The present invention provides an opening and closing rod, which can gradually increase the opening and closing angle as the depth of the opening and closing rod enters the running groove to promote the bending of the strip metal plate. When the insertion of the strip metal is stopped, the current bending degree of the strip metal plate can be locked through the limit groove and the adapter groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a storage and conveying device for strip metal materials used in a workshop proposed by the present invention;

[0019] Figure 2 A schematic diagram of the explosion structure at the telescopic plate of a storage and conveying device for strip metal materials for workshops proposed by the present invention;

[0020] Figure 3 This is a schematic diagram of the exploded structure of a storage and conveying device for strip metal materials used in a workshop proposed by the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of a return spring of a storage and conveying device for strip metal materials for workshops proposed by the present invention;

[0022] Figure 5 This is a structural schematic diagram of a suspension buckle of a storage and conveying device for strip metal materials used in workshops proposed by the present invention;

[0023] Figure 6 This is a schematic diagram of the cross-sectional structure of a storage and conveying device for strip metal materials used in a workshop proposed by the present invention;

[0024] Figure 7 This is a schematic structural diagram of a sleeve of a storage and conveying device for strip metal materials for workshops proposed by the present invention.

[0025] In the figure: 1. Track housing; 2. Reinforcement roller; 3. Running groove; 4. Wire hole; 5. Connecting seat; 6. Snap-on seat; 7. Plug connector; 8. Limiting groove; 9. Adapter groove; 10. Suspension buckle; 11. Accommodating groove; 12. Through groove; 13. Movable rod; 14. Support plate; 15. Traction motor; 16. Buckle; 17. Traction slider; 18. Traction steel cable; 19. Opening and closing rod; 20. Roller; 21. Telescopic plate; 22. Reset spring; 23. Arc plate; 24. Telescopic leg; 25. Support wheel; 26. Compression spring; 27. Support head; 28. Corrugated groove; 29. ​​Rectangular hole; 30. Lower closing plate; 31. Pillar; 32. Second reset spring; 33. Connecting rod; 34. Locking plate; 35. Connecting rope; 36. Cross bar; 37. Vertical pole; 38. Sleeve; 39. Support spring; 40. Arc plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] Example, see Figure 1-Figure 7 A storage and conveying device for strip metal materials for workshops includes a track shell 1. There are two track shells 1, and the two track shells 1 are symmetrically placed up and down. Reinforcement rollers 2 are fixed on opposite sides of the two track shells 1. The inwardly rotating terminal of the track shell 1 is provided with a winding assembly. The winding assembly further includes a support plate 14 fixed to the inwardly rotating terminal of the track shell 1. The top of the support plate 14 is connected to a traction motor 15 through a fixed seat, and a winding disk is fixed to the output end of the traction motor 15.

[0028] A further advantage of adopting the above method is that the winding assembly can rotate the winding traction cable 18 through the output end of the traction motor 15, thereby driving the strip metal plate winding chain connected by multiple connecting seats 5 to follow the movement trajectory of the running slot 3 and be wound up.

[0029] A running groove 3 is provided on the surface of the track shell 1, and one side of the running groove 3 is arranged in a slope, a wire hole 4 is provided on the inner bottom wall of the running groove 3, a slidable connecting seat 5 is inserted into the inside of the running groove 3, and a clamping seat 6 and a plug connector 7 are fixed at both ends of the connecting seat 5 respectively, and two adjacent connecting seats 5 are connected to the plug connector 7 through the clamping seat 6, one end of the plug connector 7 is plugged into the inner wall of the clamping seat 6, and a limiting groove 8 is provided on the top of the plug connector 7, and an adapting groove 9 is provided on the top of the clamping seat 6, and a hanging buckle 10 is fixed at one end of the connecting seat 5 at one end, and one end of the hanging buckle 10 is connected to the winding assembly through a connecting assembly, and further the connecting assembly includes a buckle 16 clamped on the inner wall of the through hole of the hanging buckle 10, a traction slider 17 is fixed on the top of the buckle 16, and the top of the traction slider 17 is plugged into the inner wall of the wire hole 4, and a traction steel cable 18 is fixed on one end of the traction slider 17, and one end of the traction steel cable 18 passes through the wire hole 4 and is wound around the inner wall of the groove of the winding drum of the traction motor 15.

[0030] A further advantage of adopting the above method is that after the buckle 16 is engaged with the suspension buckle 10, the connecting seat 5 can be driven to slide in the running groove 3 through the traction steel cable 18, and vice versa, the traction steel cable 18 can be pulled out to facilitate secondary use of the traction connecting seat 5.

[0031] A receiving groove 11 is provided inside the connecting seat 5, and an opening and closing assembly is hinged at the end of the receiving groove 11 through an axis. The opening and closing assembly further includes an opening and closing rod 19 hinged to the inner wall of the receiving groove 11, and one end of the opening and closing rod 19 is hinged to a roller 20 through an axis, and the side of the roller 20 is tightly fitted to the slope of the running groove 3.

[0032] A further advantage of adopting the above method is that the opening and closing rods 19 are arranged in an eight-shaped shape. When the roller 20 slides on the slope of the side of the running groove 3, the opening angle of the two opening and closing rods 19 increases as the slope rises, driving the telescopic plate 21 and the telescopic leg 24 to move.

[0033] A telescopic assembly is provided between the two opening and closing assemblies, and the telescopic assembly further includes a telescopic plate 21 connected to one end of the two opening and closing rods 19 through tooth groove engagement, and one end of the telescopic plate 21 is inserted into the inner wall of the accommodating groove 11 and is fixed with a return spring 22, and one end of the return spring 22 is tightly fitted to the inner bottom wall of the accommodating groove 11, and an arc plate 23 is fixed to the outer side of the opening and closing rod 19, and one end of the arc plate 23 is inserted into the inner wall of the through groove 12.

[0034] A further advantage of adopting the above method is that the reset spring 22 can pull the telescopic plate 21 into the accommodating groove 11 when the opening and closing rod 19 is not subjected to external force, thereby promoting the resetting of the opening and closing rod 19. When the telescopic plate 21 is driven by the opening and closing rod 19 to slide outward, it can drive the movable rod 13 to bend the strip metal plate to promote the bending and winding of the strip metal plate.

[0035] A through groove 12 is opened on both sides of the two accommodating grooves 11, and a support component is provided inside the through groove 12. The support component further includes a telescopic leg 24 inserted into the inner wall of the through groove 12, one end of the telescopic leg 24 passes through the through groove 12 and is hinged with a support wheel 25 through an axis, and the side of the support wheel 25 is tightly fitted to the inner wall of the running groove 3, and a compression spring 26 is fixed to the other end of the telescopic leg 24, and a support head 27 is fixed to one end of the compression spring 26, and one end of the support head 27 is tightly fitted to one end of the arc plate 23.

[0036] A further advantage of adopting the above method is that the opening and closing rod 19 can squeeze the telescopic leg 24 after it is opened, so that the supporting wheel 25 at one end of the telescopic leg 24 abuts against the inner wall of the running groove 3, thereby fixing the connecting seat 5.

[0037] It is worth noting that the roller 20 and the supporting wheel 25 are both inserted into the grooves on both sides of the running groove 3 to prevent the connecting seat 5 from falling out of the running groove 3.

[0038] A slide slot hole is provided at one end of the telescopic component, and a movable rod 13 is inserted into the inner wall of the slide slot hole. A limit assembly is provided on the top of the telescopic component. The limit assembly further includes a corrugated groove 28 provided on the upper surface of the telescopic plate 21 and a rectangular hole 29 provided on one side of the connecting seat 5. A lower closing plate 30 is clamped on the inner wall of the corrugated groove 28, and a pillar 31 is fixed on the top of the lower closing plate 30. A second return spring 32 is sleeved on the bottom end of the pillar 31. The upper and lower ends of the second return spring 32 are respectively fixed to the inner top wall of the accommodating groove 11 and the upper surface of the lower closing plate 30. A connecting rod 33 is fixed to one end of the lower closing plate 30. One end of the connecting rod 33 passes through the rectangular hole 29 and is fixed with a locking plate 34, and the bottom of the locking plate 34 is inserted into the inner walls of the limiting groove 8 and the adapting groove 9.

[0039] A further advantage of adopting the above method is that the corrugated groove 28 can close with the lower closing plate 30 after the telescopic plate 21 stops moving outward, thereby preventing the telescopic plate 21 from resetting and causing the restoring force of the strip metal plate to be applied to the track housing 1, thereby reducing the extreme value of the external force borne by the track housing 1.

[0040] A traction assembly is provided on the side of the limiting assembly, and the traction assembly further includes a ring sleeved on the top side of the column 31, and a connecting rope 35 is fixed between two adjacent rings. A cross bar 36 is fixed to one end of one of the connecting ropes 35, and both ends of the cross bar 36 are fixed to the top inner wall of one of the connecting seats 5.

[0041] A further advantage of the above method is that the sleeve can be driven to pull the support column 31 upward by pulling the connecting rope 35, so that the lower closing plate 30 is separated from the corrugated groove 28, and the strip metal plate is restored, thereby improving the safety of the storage of the strip metal plate.

[0042] A strip support assembly is provided on the opposite surfaces of the upper and lower connecting seats 5. The strip support assembly further includes a vertical rod 37 fixed between the opposite sides of the upper and lower connecting seats 5. A sleeve 38 is sleeved on the side of the vertical rod 37. A support spring 39 is fixed on the side of the sleeve 38. An arc plate 40 is fixed at one end of the support spring 39.

[0043] A further advantage of adopting the above method is that the arc-shaped plate 40 can cooperate with the movable rod 13 to initially limit the strip metal plate, so that the strip metal plate can follow the connecting seat 5 into the track housing 1 to be rolled up and stored.

[0044] When the present invention is used, Figure 7 As shown in the figure, the strip metal plate is inserted into the gap between the arc plate 40 and the movable rod 13, and the sleeve 38 can be moved up and down to adapt to the width of the strip metal plate. After the strip metal plate is inserted, the connection is as shown in the figure. Figure 3 The traction motor 15 shown in the figure can be driven by the traction cable 18. Figure 2 The connecting seat 5 shown enters the interior of the track housing 1;

[0045] When the strip metal plate enters the track housing 1, the roller 20 contacts the slope of the side of the running groove 3 to drive the opening and closing rod 19 to open and drive the telescopic plate 21 to move. During the movement of the telescopic plate 21, the movable rod 13 can be driven to squeeze the strip metal plate to promote the bending of the strip metal plate. Figure 4 The lower closing plate 30 shown slides up and down in the corrugated groove 28, and the locking plate 34 connected to the lower closing plate 30 slides up and down. When the strip metal plate stops entering the track housing 1, the corrugated groove 28 and the lower closing plate 30 close and stop moving. At this time, the telescopic plate 21 stops moving, and the locking plate 34 is inserted as shown in FIG. Figure 2 The inner walls of the limiting groove 8 and the adapting groove 9 shown in the figure can be fixed with respect to the curvature of two adjacent connecting seats 5;

[0046] When removing the metal strip, pull it outwards. Figure 2 The connecting rope 35 shown can drive the platform column 31 to move upward. At this time, the telescopic plate 21, the clamping seat 6 and the plug connector 7 can move freely, and the staff can take out the strip metal plate from the inside of the track housing 1.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A storage and conveying device for strip metal materials for workshop use, comprising a track housing (1), characterized in that: There are two track shells (1), and the two track shells (1) are symmetrically arranged in an upper and lower manner. Reinforcement rollers (2) are fixed on opposite sides of the two track shells (1). The terminal end of the track shell (1) that rotates inward is provided with a winding assembly. A running groove (3) is provided on the surface of the track shell (1), and one side of the running groove (3) is arranged in a slope. A wire hole (4) is provided on the inner bottom wall of the running groove (3). A slidable connecting seat (5) is inserted into the inside of the running groove (3). A clamping seat (6) and a plug connector (7) are respectively fixed at both ends of the connecting seat (5). Two adjacent connecting seats (5) are connected to the plug connector (7) via the clamping seat (6). One end of the plug connector (7) is inserted into the inner wall of the clamping seat (6). A limiting groove (8) is provided on the top of the plug connector (7). An adapting groove (9) is provided on the top of the clamping seat (6), and a hanging buckle (10) is fixed to one end of the connecting seat (5) at one end, and one end of the hanging buckle (10) is connected to the winding assembly through a connecting assembly. A containing groove (11) is provided inside the connecting seat (5), and an opening and closing assembly is hinged at the port of the containing groove (11) through an axis, and a telescopic assembly is provided between the two opening and closing assemblies. Through grooves (12) are provided on both sides of the two containing grooves (11), and a supporting assembly is provided inside the through groove (12). A sliding groove hole is provided at one end of the telescopic assembly, and a movable rod (13) is inserted into the inner wall of the sliding groove hole. A limiting assembly is provided on the top of the telescopic assembly, and a traction assembly is provided on the side of the limiting assembly. A strip support assembly is provided on the opposite surfaces of the upper and lower connecting seats (5).

2. The storage and conveying equipment for strip metal materials for workshops according to claim 1 is characterized in that: The winding assembly comprises a support plate (14) fixed to the inner rotation terminal of the track housing (1); the top of the support plate (14) is connected to a traction motor (15) via a fixing seat; and a winding disc is fixed to the output end of the traction motor (15).

3. The storage and conveying equipment for strip metal materials for workshops according to claim 2, characterized in that: The connecting assembly comprises a buckle (16) which is clamped on the inner wall of the through hole of the suspension buckle (10); a traction slider (17) is fixed on the top of the buckle (16); the top of the traction slider (17) is plugged into the inner wall of the wire hole (4); a traction steel cable (18) is fixed on one end of the traction slider (17); one end of the traction steel cable (18) passes through the wire hole (4) and is wound around the inner wall of the groove of the winding drum of the traction motor (15).

4. The storage and conveying equipment for strip metal materials for workshop use according to claim 1, characterized in that: The opening and closing assembly comprises an opening and closing rod (19) hinged to the inner wall of the accommodating groove (11), one end of the opening and closing rod (19) is hinged to a roller (20) via an axis, and the side surface of the roller (20) is tightly fitted to the slope of the running groove (3).

5. The storage and conveying equipment for strip metal materials for workshop use according to claim 4, characterized in that: The telescopic assembly comprises a telescopic plate (21) connected to one end of two opening and closing rods (19) through tooth groove engagement, one end of the telescopic plate (21) inserted into the inner wall of the accommodating groove (11) is fixed with a return spring (22), one end of the return spring (22) is tightly fitted to the inner bottom wall of the accommodating groove (11), and an arc plate (23) is fixed to the outer side of the opening and closing rod (19), one end of the arc plate (23) is inserted into the inner wall of the through groove (12).

6. The storage and conveying equipment for strip metal materials for workshop use according to claim 5, characterized in that: The support assembly comprises a telescopic leg (24) inserted into the inner wall of the through-groove (12); one end of the telescopic leg (24) penetrates through the through-groove (12) and is hinged to a support wheel (25) via an axis; the side surface of the support wheel (25) is tightly fitted to the inner wall of the running groove (3); the other end of the telescopic leg (24) is fixed with a compression spring (26); one end of the compression spring (26) is fixed with a support head (27); one end of the support head (27) is tightly fitted to one end of the arc-shaped plate (23).

7. The storage and conveying equipment for strip metal materials for workshop use according to claim 6, characterized in that: The limiting assembly comprises a corrugated groove (28) provided on the upper surface of the telescopic plate (21) and a rectangular hole (29) provided on one side of the connecting seat (5); a lower closing plate (30) is clamped on the inner wall of the corrugated groove (28); a platform column (31) is fixed on the top of the lower closing plate (30); a second return spring (32) is sleeved on the bottom end of the platform column (31); upper and lower ends of the second return spring (32) are respectively fixed to the inner top wall of the accommodating groove (11) and the upper surface of the lower closing plate (30); a connecting rod (33) is fixed to one end of the lower closing plate (30); one end of the connecting rod (33) passes through the rectangular hole (29) and is fixed with a locking plate (34); and the bottom of the locking plate (34) is plugged into the inner walls of the limiting groove (8) and the adapting groove (9).

8. The storage and conveying equipment for strip metal materials for workshop use according to claim 7, characterized in that: The traction assembly comprises a ring sleeved on the top side of the column (31), a connecting rope (35) is fixed between two adjacent rings, a cross bar (36) is fixed to one end of one of the connecting ropes (35), and both ends of the cross bar (36) are fixed to the top inner wall of one of the connecting seats (5).

9. The storage and conveying equipment for strip metal materials for workshop use according to claim 8, characterized in that: The strip support assembly comprises a vertical rod (37) fixed between opposite sides of an upper and lower connecting seat (5), a sleeve (38) is sleeved on the side of the vertical rod (37), a support spring (39) is fixed on the side of the sleeve (38), and an arc plate (40) is fixed to one end of the support spring (39).

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