A lift that is easy to maintain

By setting up access plates and limit locking devices for placement holes on the side plates of the construction elevator cage, the problem of no placement of maintenance tools is solved, and the coordinated maintenance of multiple people is achieved, which improves safety and efficiency.

CN115417268BActive Publication Date: 2025-08-19JINJIANG ANHAI LIBA MASCH CO LTD
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Patent Information

Application Number
CN202211117236.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-09-14
Publication Date
2025-08-19
Estimated Expiration
2042-09-14

AI Technical Summary

Technical Problem

When the construction elevator is inspecting the components on the outside of the cage, there is no place for the maintenance tools to be temporarily placed. Due to the special nature of the maintenance location, it can only be inspected separately, which poses safety hazards.

Method used

A lift is designed for easy access. The side plate of the hanging cage is equipped with a placement hole for placing the access plate. The access plate can be flipped and perpendicular to the side plate. The hanging cage door and the peripheral door need to be opened at the same time before entering and exiting. The limit locking device is installed near the side plate, and the access plate and limit locking device are used to realize the placement and safe inspection of tools.

Benefits of technology

It solved the problem that maintenance tools were not placed in the place, and achieved collaborative maintenance by multiple people, improving safety and maintenance efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to an elevator that is easy to maintain. One side of the cage is installed on the guide rail frame and moves along the guide rail frame. The outer side panel and the door frame are surrounded by the cage and the outer periphery of the guide rail frame. The side panel is located on one side of the cage frame and is fixedly connected to the cage frame. At least two placement holes for placing inspection panels are spaced apart on the side panel. The inspection panel is located in the placement holes and the bottom is rotatably connected to the placement holes. The cage door is located on the side of the cage frame and is movably connected to the cage frame up and down. The outer door is on the outside of the door frame and is movably connected to the door frame up and down. The limit locking device is installed at a position close to the side panel. The inspection panel allows maintenance personnel to place maintenance tools on the inspection panel when repairing the side of the cage. At the same time, the maintenance personnel in the cage can cooperate with the maintenance personnel outside the cage to perform maintenance in the cage, thereby overcoming the problem that there is no place to temporarily place the maintenance tools, which is very inconvenient, and the maintenance can only be carried out individually due to the particularity of the maintenance position.
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Description

Technical Field

[0001] The invention belongs to the technical field of construction elevators, and in particular relates to an elevator that is easy to maintain. Background Art

[0002] With the rapid development of the national economy, construction machinery such as construction hoists are playing a significant role in an increasing number of construction fields. The use of construction hoists is particularly important for large-scale projects and high-rise buildings, as they can significantly improve productivity and save labor time. People are also increasingly demanding comprehensive requirements for hoists in terms of performance, efficiency, load capacity, intelligence, labor costs, and maintenance.

[0003] It is very troublesome to inspect the components on the outside of the cage of a construction hoist, especially the limit locking device. Basically, people have to go to the top of the cage or hang on the standard section to perform maintenance and inspection. Personal safety cannot be guaranteed. In particular, there is no place to temporarily place the maintenance tools, which is very inconvenient to replace. Moreover, due to the special nature of the maintenance position, it is difficult to coordinate and can only be inspected individually. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the technical problem to be solved by the present invention is that there is no place to temporarily place the maintenance tools, which makes replacement very inconvenient, and due to the particularity of the maintenance position, it is difficult to coordinate and can only be maintained individually.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: an elevator that is easy to maintain, including a cage, a guide rail frame, an outer fence and a limit locking device, one side of the cage is installed on the guide rail frame and moves along the guide rail frame, the outer fence includes an outer side panel, an outer door and a door frame, the outer side panel and the door frame are surrounded by the cage and the guide rail frame, the cage includes a cage frame, a side panel, a cage door and an inspection panel, the side panel is located on one side of the cage frame and is fixedly connected to the cage frame, at least two placement holes for placing the inspection panel are spaced apart on the side panel, the inspection panel is located in the placement hole and the bottom is rotatably connected to the placement hole, the inspection panel can be flipped toward the inside of the cage frame and finally perpendicular to the side panel, the cage door is located on the side of the cage frame and is movably connected to the cage frame up and down, the position of the door frame is consistent with that of the cage door, the outer door is on the outside of the door frame and is movably connected to the door frame up and down, and the limit locking device is installed near the side panel.

[0006] Furthermore, the cage also includes a rotating shaft, one end of which is fixedly connected to the side plate and the other end is fixedly connected to the inspection plate, and the inspection plate is rotatably connected to the side plate via the rotating shaft.

[0007] Furthermore, a placement groove is provided on the top surface of the inspection plate, and when the inspection plate is perpendicular to the side plate, the placement groove faces upward.

[0008] Furthermore, the cage also includes a support seat, which is located on the inner side of the side panel and is fixedly connected to the side panel. When the inspection panel is perpendicular to the side panel, the support seat is located below the inspection panel.

[0009] Furthermore, the cage also includes a pedal, and there are at least two pedals. The pedals are located outward from the side panels and are fixedly connected to the side panels. The pedals are located below the inspection panel.

[0010] Furthermore, the cage also includes a handle, which is located on the bottom surface of the inspection plate and fixedly connected to the inspection plate. When the inspection plate is perpendicular to the side plate, the handle is located below the side plate.

[0011] Furthermore, the limit locking device includes a clamping part, a locking part, and a touch and unlocking part. The clamping part is located at the top of the outer door and is fixedly connected to the outer door. The locking part is located at the top of the door frame and is detachably connected to the door frame. The touch and unlocking part is installed on the side of the cage frame. The locking part is buckled above the clamping part. The locking part cooperates with the clamping part to prevent the outer door from moving upward. When the touch and unlocking part contacts the locking part, the locking part disengages from the clamping part. The touch and unlocking part cooperates with the locking part to ensure that the outer door can move upward without obstruction.

[0012] Furthermore, the locking member includes a locking column and a locking block, the locking column is located at the top of the peripheral door and is fixedly connected to the peripheral door, the locking block is located at the top of the locking column and is fixedly connected to the locking column, the locking member includes a swivel seat, a swivel block, a first buffer spring, a connecting column, a fixing column, a hook and a contact wheel, the swivel seat is located at the top of the door frame and is detachably connected to the door frame, the swivel block is rotatably connected to the swivel seat, the top surface of the swivel block is provided with a hook placement groove for placing the hook, the lower end of the hook is located in the hook placement groove, buffer grooves are provided on both sides of the swivel block, and the buffer grooves are connected to the hook placement grooves The lower end side surface of the hook is provided with a through hole, the connecting column is non-cylindrical, and the shape of the through hole is consistent with the connecting column. The middle of the connecting column is located in the hook groove, and the hook is passed through the through hole and fixed on the connecting column. The two ends of the connecting column are respectively located in the buffer groove and can slide in the buffer groove. The fixed column is located on both sides of the rotating block and is fixedly connected to the rotating block. There are two first buffer springs, one end of the first buffer spring is fixedly connected to the connecting column and the other end is fixedly connected to the fixed column. The collision wheel is located at the bottom of the rotating block and is rotatably connected to the rotating block.

[0013] Furthermore, the collision and unlocking member includes a connecting plate, a collision block, a fixing cap, a fixing ring, a second buffer spring, a third buffer spring and a rotating rod. The connecting plate is located on the side of the cage frame and is detachably connected to the cage frame. A limiting rotating hole is provided on the side of the connecting plate. One end of the rotating rod is fixedly connected to the side of the collision block and the other end extends into the limiting rotating hole and is rotatably connected to the connecting plate. There are two fixing rings, which are respectively arranged on the upper and lower sides of the bottom surface of the collision block and are fixedly connected to the collision block. The fixing cap is located on the side of the connecting plate and is detachably connected to the connecting plate. One end of the second buffer spring and the third buffer spring is fixedly connected to the fixing ring and the other end is fixedly connected to the fixing cap.

[0014] Furthermore, two protrusions are provided on the inner wall of the position-limiting rotating hole, and the two protrusions are parallel. The side surface of the rotating rod is elliptical, and the rotating rod cooperates with the protrusions to limit the rotation angle.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention utilizes an inspection plate so that maintenance personnel can place maintenance tools on the inspection plate when repairing the side of the cage. At the same time, the maintenance personnel inside the cage can cooperate with maintenance personnel outside the cage to perform maintenance inside the cage, thereby overcoming the problem that there is no place to temporarily place maintenance tools, which is very inconvenient to replace, and the problem that due to the particularity of the maintenance position, it is difficult to cooperate and can only be repaired individually. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the right side of the position limiting locking device of the present invention in the open state;

[0019] Figure 3 This is a schematic diagram of the right side of the position limiting locking device of the present invention in the unopened state;

[0020] Figure 4 This is a left side schematic diagram of the position limiting locking device of the present invention in an unopened state;

[0021] Figure 5 for Figure 4 A partial enlarged view of part A;

[0022] Figure 6 for Figure 4 A partial enlarged view of part B;

[0023] Figure 7 It is a structural diagram of the cage;

[0024] Figure 8 for Figure 7 A partial enlarged view of part C;

[0025] Figure 9 It is the structural diagram of the repair panel;

[0026] Figure 10 This is a side view of the combination of the lock hook, the rotating block and the impact wheel;

[0027] Figure 11 This is a front view of the assembled lock hook, rotating block and impact wheel;

[0028] Figure 12 Schematic diagram of the structure of the lock hook;

[0029] Figure 13 Schematic diagram of the structure of the fixed cap;

[0030] Figure 14 Schematic diagram of the transposition structure;

[0031] Figure 15 Schematic diagram of the structure of the rotating rod.

[0032] Figure 16 It is a schematic diagram of the combination of side panels, treads, support bases and inspection panels.

[0033] Markings in the figure:

[0034] 1. Cage;

[0035] 11. Cage frame; 12. Side panels; 121. Inspection panel; 122. Rotating shaft; 123. Placement slot; 13. Step plate; 14. Cage door; 15. Support base; 16. Handle;

[0036] 2. Guide rail frame;

[0037] 3. External fence; 31. External side panels; 32. External door; 33. Door frame;

[0038] 4. Limit locking device;

[0039] 41. Clamping member; 411. Clamping column; 412. Clamping block;

[0040] 42. Locking element; 421. Rotating seat; 422. Rotating block; 4221. Buffer groove; 4222. Rotating hole; 4223. Hooking groove; 423. First buffer spring; 424. Connecting post; 425. Fixing post; 426. Hook; 427. Through hole; 428. Contact wheel; 429. Magnetic ring;

[0041] 43. Touch and unlocking member; 431. Connecting plate; 4311. Long hole; 4312. Position-limiting rotating hole; 432. Touch block; 4321. Fixed ring; 433. Rotating rod; 434. Second buffer spring; 435. Third buffer spring; 436. Fixed cap. DETAILED DESCRIPTION

[0042] In order to make the above features and advantages of the present invention more obvious and easy to understand, embodiments are given below with reference to the accompanying drawings for detailed description.

[0043] like Figure 1-16 As shown, this embodiment provides an elevator that is easy to maintain, including a cage 1, a guide rail frame 2, an outer fence 3 and a limit locking device 4.

[0044] One side of the cage 1 is installed on the guide rail frame 2 and moves along the guide rail frame 2. The cage 1 includes a cage frame 11, a side panel 12, a rotating shaft 122, a support seat 15, a pedal 13, a handle 16, a cage door 14 and an inspection plate 121. The side panel 12 is located on one side of the cage frame 11 and is fixedly connected to the cage frame 11. At least two placement holes for placing the inspection plate 121 are spaced apart on the side panel 12. The inspection plate 121 is located in the placement hole. One end of the rotating shaft 122 is fixedly connected to the side panel 12 and the other end is fixedly connected to the bottom of the inspection plate 121. 121 is rotatably connected to the side panel 12 through the rotating shaft 122, and the support seat 15 is located on the inner side of the side panel 12 and is fixedly connected to the side panel 12. When the inspection panel 121 is perpendicular to the side panel 12, the support seat 15 is located below the inspection panel 121. The inspection panel 121 can be flipped toward the inside of the cage frame 11 and finally perpendicular to the side panel 12 through the support seat 15. The inspection panel 121 allows maintenance personnel to place maintenance tools on the inspection panel 121 when repairing the side of the cage 1. At the same time, maintenance personnel in the cage 1 can cooperate with maintenance personnel outside the cage 1 to perform maintenance in the cage 1.

[0045] There are at least two pedals 13. The pedals 13 are located outward from the side panels 12 and are fixedly connected to the side panels 12. The pedals 13 are located below the inspection panel 121. The pedals 13 allow for temporary footing outside the cage 1 for easy inspection. The handles 16 are located on the bottom surface of the inspection panel 121 and are fixedly connected to the inspection panel 121. When the inspection panel 121 is perpendicular to the side panels 12, the handles 16 are located below the side panels 12. To prevent the inspection panel 121 from tipping over, the damping of the rotating shaft 122 is increased to prevent it from flipping over. Therefore, it is necessary to install the handles 16 on the inspection panel 121 to facilitate its flipping. The cage door 14 is located on the side of the cage frame 11 and is movably connected to the cage frame 11 up and down.

[0046] Furthermore, a placement groove 123 is provided on the top surface of the inspection plate 121. When the inspection plate 121 is perpendicular to the side plate 12, the placement groove 123 is upward. The placement groove 123 can better place the inspection items to prevent them from sliding off the inspection plate 121.

[0047] The outer fence 3 includes an outer side panel 31, an outer door 32 and a door frame 33. The outer side panel 31 and the door frame 33 are surrounded by the cage 1 and the guide rail frame 2. The position of the door frame 33 is consistent with the cage door 14. The outer door 32 is outside the door frame 33 and is movably connected to the door frame 33 up and down. In this way, the cage door 14 and the outer door 32 need to be opened at the same time to achieve entry and exit.

[0048] The limit locking device 4 includes a locking part 41, a locking part 42 and a contact and unlocking part 43. The locking part 41 includes a clamping column 411 and a clamping block 412. The clamping column 411 is located at the top of the outer door 32 and is fixedly connected to the outer door 32. The clamping block 412 is located at the top of the clamping column 411 and is fixedly connected to the clamping column 411.

[0049] The locking member 42 includes a rotating seat 421, a rotating block 422, a first buffer spring 423, a connecting column 424, a fixing column 425, a hook 426, a magnetic ring 429 and a contact wheel 428. The rotating seat 421 is located at the top of the door frame 33 and is threadedly connected to the door frame 33 through screws. A rotating hole 4222 is provided on the side of the rotating block 422. The rotating block 422 is rotatably connected to the rotating seat 421 through a rotating shaft passing through the rotating hole 4222. The top surface of the rotating block 422 is provided with a hole for placing the hook 426. The hook groove 4223 is provided, and the hook 426 is located in the hook groove 4223. Buffer grooves 4221 are provided on both sides of the rotating block 422. The buffer grooves 4221 are communicated with the hook groove 4223. A through-hole 427 is provided on the side surface of the lower end of the hook 426. The hook 426 is passed through the connecting column 424 through the through-hole 427. The buffer groove 4221 is a long hole. The connecting column 424 is non-cylindrical. Therefore, the connecting column 424 will not rotate relative to the buffer groove 4221. The connecting post 424 can be passed through the buffer groove 4221 on the rotating block 422 and is slidably connected to the rotating block 422. The shape of the through hole 427 is consistent with that of the connecting post 424, so the hook 426 will not rotate relative to the connecting post 424. Since the connecting post 424 will not rotate in the buffer groove 4221, the hook 426 will not rotate relative to the rotating block 422. The top surfaces of both ends of the connecting post 424 are provided with threaded holes, and the first buffer spring 423 can cooperate with the screw to connect one end of itself to the connecting post 424. The connecting posts 424 are fixed together, the fixing posts 425 are located on both sides of the rotating block 422 and are fixedly connected to the rotating block 422. There are two first buffer springs 423, one end of which is fixedly connected to the connecting post 424 and the other end is fixedly connected to the fixing post 425. The contact wheel 428 is located at the bottom of the rotating block 422 and is rotatably connected to the rotating block 422. The arc surface of the contact wheel 428 has a groove for accommodating a magnetic ring 429, which is mounted on the contact wheel 428. When the hook 426 is engaged above the locking block 412, the buffer groove 4221 cooperates with the first buffer spring 423 to effectively absorb the upward impact of the outer door 32, thereby preventing the hook 426 from being damaged by excessive impact. The lock member 42 has a streamlined structure and is easy to repair.

[0050] The collision and unlocking member 43 includes a connecting plate 431, a collision block 432, a fixing cap 436, a fixing ring 4321, a second buffer spring 434, a third buffer spring 435 and a rotating rod 433. The connecting plate 431 is located on the side of the cage frame 11 and is detachably connected to the cage frame 11. A limiting rotation hole 4312 is provided on the side of the connecting plate 431. One end of the rotating rod 433 is fixedly connected to the side of the collision block 432, and the other end extends into the limiting rotation hole 4312 and is rotatably connected to the connecting plate 431. There are two fixing rings 4321, which are respectively arranged on the upper and lower sides of the bottom surface of the collision block 432 and are fixedly connected to the collision block 432. The fixing cap 436 is located on the side of the connecting plate 431 and is detachably connected to the connecting plate 431. One end of the second buffer spring 434 and the third buffer spring 435 is fixedly connected to the fixing ring 4321, and the other end is fixedly connected to the fixing cap 436. The second buffer spring 434 and the third buffer spring 435 are used to maintain the balance of the collision block 432. When it is not subjected to excessive impact force, the angle of the collision block 432 remains unchanged. When it is subjected to excessive impact force, the second buffer spring 434 and the third buffer spring 435 cooperate with the collision block 432 to rotate to resolve the impact force. The structure is simple and easy to maintain.

[0051] Furthermore, two protrusions are provided on the inner wall of the limiting rotating hole 4312, and the two protrusions are parallel. The side of the rotating rod 433 is elliptical. The rotating rod 433 cooperates with the protrusions to limit the rotation angle of the rotating rod 433 and thus limit the rotation angle of the bump block 432. The protrusions on the inner wall of the limiting rotating hole 4312 are used to prevent the rotating rod 433 from driving the bump block 432 to rotate too much, thereby causing the bump block 432 to collide with the cage 1 and damage the cage 1 and the bump block 432.

[0052] Furthermore, the side of the connecting plate 431 is provided with an elongated hole 4311, and the fixing cap 436 cooperates with the elongated hole 4311 to adjust the connection position of the connecting plate 431 and the cage 11. The elongated hole 4311 is used to adjust the position of the bump block 432 to adapt the locking member 42.

[0053] Furthermore, the collision block 432 is made of iron, and the collision wheel 428 is adsorbed and connected to the collision block 432 through the magnetic ring 429. The magnetic ring 429 makes the combination of the collision wheel 428 and the collision block 432 more stable.

[0054] Working principle: When inspection is needed, flip the inspection plate 121, and then place the inspection tools on the inspection plate 121. The limit locking device 4 is installed near the side panel 12 to facilitate inspection and adjustment of the position of the bump block 432. When the bump block 432 is hit by external force due to the offset of the cage 1, it can be buffered by the second buffer spring 434 and the third buffer spring 435 in conjunction with the rotating rod 433. When the outer door 32 is opened by mistake, it can be buffered by the hook 426 in conjunction with the first buffer spring 423 to prevent accidental opening while reducing the loss of the hook 426. The hook 426 and the rotating block 422 are detachably connected, and it is also convenient to replace if the hook 426 is damaged.

[0055] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand 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 shall 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 lift that is easy to maintain, characterized by: It includes a cage, a guide rail frame, an outer fence and a limit locking device. One side of the cage is installed on the guide rail frame and moves along the guide rail frame. The outer fence includes an outer side plate, an outer door and a door frame. The outer side plate and the door frame are enclosed around the cage and the guide rail frame. The cage includes a cage frame, a side panel, a cage door, and an inspection panel. The side panel is located on one side of the cage frame and is fixedly connected to the cage frame. At least two placement holes for placing the inspection panel are spaced apart on the side panel. The inspection panel is located in the placement holes and the bottom is rotatably connected to the placement holes. The inspection panel can be flipped toward the inside of the cage frame and finally perpendicular to the side panel. The placement holes are through holes. The cage further comprises a tread plate, the tread plates comprising at least two pieces, the tread plates being located outwardly of the side plates and fixedly connected to the side plates, and the tread plates being located below the inspection plate; The cage door is located on the side of the cage frame and is movably connected to the cage frame up and down. The door frame is located in the same position as the cage door. The peripheral door is located outside the door frame and is movably connected to the door frame up and down. The limit locking device is installed near the side panel. The limit locking device includes a clamping member, a locking member, and a striking and unlocking member, wherein the clamping member is located at the top of the peripheral door and is fixedly connected to the peripheral door, the locking member is located at the top of the door frame and is detachably connected to the door frame, the striking and unlocking member is installed on the side of the cage frame, the locking member is buckled above the clamping member, the locking member cooperates with the clamping member to prevent the peripheral door from moving upward, and when the striking and unlocking member contacts the locking member, the locking member disengages from the clamping member, and the striking and unlocking member cooperates with the locking member to ensure that the peripheral door can move upward without obstruction; The collision and unlocking member includes a connecting plate, a collision block, a fixing cap, a fixing ring, a second buffer spring, a third buffer spring and a rotating rod, the connecting plate is located on the side of the cage frame and is detachably connected to the cage frame, the side of the connecting plate is provided with a limiting rotating hole, one end of the rotating rod is fixedly connected to the side of the collision block, the other end extends into the limiting rotating hole and is rotatably connected to the connecting plate, and there are two fixing rings, the fixing rings are respectively provided on the upper and lower sides of the bottom surface of the collision block and are fixedly connected to the collision block, the fixing cap is located on the side of the connecting plate and is detachably connected to the connecting plate, one end of the second buffer spring and the third buffer spring is fixedly connected to the fixing ring, and the other end is fixedly connected to the fixing cap; The inner wall of the position-limiting rotating hole is provided with two protrusions, which are parallel to each other. The side surface of the rotating rod is elliptical, and the rotating rod cooperates with the protrusions to limit the rotation angle.

2. The elevator for easy maintenance according to claim 1, characterized in that: The cage further comprises a rotating shaft, one end of which is fixedly connected to the side plate and the other end of which is fixedly connected to the inspection plate, and the inspection plate is rotatably connected to the side plate via the rotating shaft.

3. The elevator for easy maintenance according to claim 1, characterized in that: A placement groove is provided on the top surface of the inspection plate, and when the inspection plate is perpendicular to the side plate, the placement groove faces upward.

4. The elevator for easy maintenance according to claim 1, characterized in that: The cage also includes a support seat, which is located on the inner side of the side plate and is fixedly connected to the side plate. When the inspection plate is perpendicular to the side plate, the support seat is located below the inspection plate.

5. The elevator for easy maintenance according to claim 1, characterized in that: The cage also includes a handle, which is located on the bottom surface of the inspection plate and fixedly connected to the inspection plate. When the inspection plate is perpendicular to the side plate, the handle is located below the side plate.

6. The elevator for easy maintenance according to claim 1, characterized in that: The locking part includes a locking column and a locking block, the locking column is located at the top of the peripheral door and is fixedly connected to the peripheral door, the locking block is located at the top of the locking column and is fixedly connected to the locking column, the locking part includes a swivel seat, a swivel block, a first buffer spring, a connecting column, a fixing column, a hook and a touch wheel, the swivel seat is located at the top of the door frame and is detachably connected to the door frame, the swivel block is rotatably connected to the swivel seat, the top surface of the swivel block is provided with a hook placement groove for placing the hook, the lower end of the hook is located in the hook placement groove, buffer grooves are provided on both sides of the swivel block, the buffer grooves are communicated with the hook placement grooves, The side surface of the lower end of the hook is provided with a through hole, the connecting column is non-cylindrical, and the shape of the through hole is consistent with the connecting column. The middle part of the connecting column is located in the hook groove, and the hook is passed through the through hole and fixed on the connecting column. The two ends of the connecting column are respectively located in the buffer groove and can slide in the buffer groove. The fixed column is located on both sides of the rotating block and is fixedly connected to the rotating block. There are two first buffer springs, one end of the first buffer spring is fixedly connected to the connecting column and the other end is fixedly connected to the fixed column. The collision wheel is located at the bottom of the rotating block and is rotatably connected to the rotating block.

Citation Information

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