Anti-falling structure

Abstract

The utility model provides an anti-falling structure, and relates to the technical field of goods elevator protection equipment. Comprising a goods elevator body, a mounting guide rail is mounted on one side of the goods elevator body, and the goods elevator body, an electric telescopic rod, a moving frame and a buffering anti-falling mechanism are arranged, so that the moving frame on the outer side is driven to conduct height adjustment and normal lifting operation; a first spring rope, a second spring rope and a reinforcing connecting rope can stretch out and draw back, primary buffering treatment is carried out when the moving frame integrally moves, the primary anti-falling effect is achieved, objects needing to be conveyed are conveniently placed through a placing table, the second spring rope and the reinforcing connecting rope are installed between a second installation block and a buffering disc at the same time, and the anti-falling effect is achieved. The service life of the equipment is prolonged, an electric telescopic rod and a second fixing bottom plate are positioned and installed through a supporting chassis and a fourth positioning bolt, secondary supporting treatment is conducted on the whole equipment through the second fixing bottom plate, and the stability of the equipment during normal operation is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of freight elevator safety equipment, and in particular to a fall prevention structure. Background Technology

[0002] Freight elevators can be categorized into two types: scissor lifts and guide rail lifts. Lifting heights range from 1 meter to 20 meters, and custom specifications can be made to meet specific user requirements. They are primarily used for transporting goods vertically in factory assembly lines, warehouses, parking lots, docks, construction sites, and logistics facilities. Freight elevators are widely used as cargo-carrying platforms and are lifting and conveying devices. Guide rail lifts, in particular, feature high load capacity, high safety factor, smooth lifting, long service life, and simple maintenance. Guide rail lifts are specifically designed for lifting goods, using heavy-duty chains and wire ropes for transmission. They are also equipped with anti-fall structures to prevent damage to goods from sudden drops.

[0003] In practice, the existing fall protection structure settings are relatively simple. When a single fall protection mechanism malfunctions, it may cause safety hazards. At the same time, it occupies a lot of power equipment for auxiliary operation, which increases the overall use and installation cost and affects normal operation.

[0004] Therefore, this utility model provides a fall protection structure. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a fall-prevention structure.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a fall-prevention structure, including a freight elevator.

[0007] The freight elevator is equipped with a mounting guide rail on one side, and is fixedly connected with equidistantly distributed reinforcing plates inside the freight elevator. The freight elevator is reinforced as a whole by multiple reinforcing plates. A movable frame is slidably connected to the outside of the mounting guide rail, and a placement platform is fixedly connected to one side of the movable frame.

[0008] A positioning plate is installed at the connection between the movable frame and the mounting rail. The positioning plate is located on the top of the movable frame. Equally spaced mounting seats are installed on the top of the positioning plate. Two fixed frames are installed on the outer side of each mounting seat. Limit pulleys are rotatably connected between the two fixed frames on the same side.

[0009] The freight elevator is internally fixedly connected to a positioning plate. A connecting block is slidably connected to one side of the positioning plate. An electric telescopic rod is installed on one side of the connecting block. A limit frame is fixedly connected to the output end of the electric telescopic rod. The limit frame is connected to the connecting block. The outer side of the limit frame is connected to the movable frame. The operation of the electric telescopic rod drives the limit frame to adjust its height, thereby driving the outer movable frame to adjust its height for normal lifting operations. The positioning plate limits the sliding of the connecting block.

[0010] Two buffer anti-fall mechanisms are installed between the freight elevator and the mounting rail, symmetrically distributed. Each buffer anti-fall mechanism includes a first spring rope. Two first mounting blocks are fixedly connected to the top of the mounting rail, and a first hook is fixedly connected to the top of each of the two first mounting blocks. A first spring rope is fixedly connected to the top of each of the first hooks, and a buffer plate is fixedly connected to the top of each of the first spring ropes. Second mounting blocks are installed on both sides of the freight elevator, and a second spring rope is fixedly connected to the bottom of each of the second mounting blocks. One end of the bottom of each second spring rope is connected to a corresponding buffer plate. The first spring rope, second spring rope, and reinforcing connecting rope are all telescopic, providing a buffer effect during the overall movement of the moving frame, achieving a primary anti-fall effect. Multiple first limit plates, positioning blocks, and third positioning bolts work together to limit the bottom of the moving frame during movement, providing a secondary anti-fall effect. Multiple limit pulleys roll on the outside of the mounting rail, also providing a buffer effect on the movement speed of the moving frame, providing a tertiary anti-fall effect, thereby improving the overall safety of the equipment.

[0011] In a preferred embodiment, the bottom of the placement platform is fixedly connected to two symmetrically distributed reinforcing side plates. Each reinforcing side plate has an auxiliary connecting plate fixedly connected to its other end. One side of each auxiliary connecting plate is connected to the movable frame. An acceleration sensor is fixedly connected to the outer side of each auxiliary connecting plate, above the reinforcing side plates. The acceleration sensors are used to monitor the speed of the movable frame as it slides. The symmetrically distributed reinforcing side plates installed between the movable frame and the placement platform provide reinforcement and support. The placement platform facilitates the placement of the transported items. Equally spaced secondary reinforcing plates are installed between the freight elevator and the mounting rails. A first limiting plate is provided, with positioning blocks extending into the installation guide rail fixedly connected to one side of each first limiting plate. A third positioning bolt extending into the installation guide rail is threadedly connected to the outer side of each first limiting plate. The third positioning bolt is used to position the first limiting plate and the installation guide rail, and to limit the bottom movement. A second limiting plate is installed between the freight elevator and the installation guide rail, above the first limiting plate. A second positioning bolt extending into the installation guide rail is threadedly connected to the outer side of the second limiting plate. The second positioning bolt is used to position the second limiting plate and the installation guide rail, and to limit the top movement.

[0012] The technical effect of adopting the above-mentioned further solution is that the acceleration sensor is used to monitor the speed when the mobile frame slides as a whole, and the symmetrically distributed reinforcing side plates installed between the mobile frame and the placement platform have a reinforcing and supporting effect, and the placement platform facilitates the placement of the required transported items.

[0013] In a preferred embodiment, the mounting guide rail is provided with limiting grooves around its perimeter to accommodate the sliding of the limiting pulleys. The outer side of the fixed frame is equipped with limiting shafts for use with the limiting pulleys. A mounting baffle is installed on the top of the positioning plate and on one side of the mounting base. A buffer spring is installed between the mounting baffle and the mounting base, and a damping shock absorber is installed inside each buffer spring. The buffer spring and damping shock absorber work together to buffer and protect the mounting base from vibration. A fifth positioning bolt extending into the interior of the freight elevator is threaded onto the outer side of the second mounting block. A reinforcing connecting rope is installed between the buffer plate and the second mounting block and on one side of the second spring rope. The simultaneous installation of the second spring rope and the reinforcing connecting rope between the second mounting block and the buffer plate improves the service life of the equipment. The fifth positioning bolt positions the second mounting block after height adjustment, and the height of the buffer and anti-fall mechanism can be adjusted according to the operational requirements, improving the flexibility of equipment use.

[0014] The technical effect of adopting the above-mentioned further solution is that it provides buffer protection when the mounting base vibrates by using a combination of buffer springs and damping shock absorbers.

[0015] In a preferred embodiment, the bottom of the freight elevator is fixedly connected to a first fixed base plate. The first fixed base plate is threaded with first positioning bolts inside and around the perimeter of the freight elevator. The first positioning bolts are used to position the first fixed base plate to the installation ground and provide initial support for the entire equipment.

[0016] The technical effect of adopting the above-mentioned further solution is that the first positioning bolt is used to position the first fixed base plate and the installation ground, and to provide initial support for the entire equipment.

[0017] In a preferred embodiment, a second fixed base plate is installed at the bottom of the freight elevator, located between two first fixed base plates. A support chassis is fixedly connected to the bottom of the electric telescopic rod. Fourth positioning bolts extending into the second fixed base plate are threadedly connected to the top of the support chassis and around the perimeter of the electric telescopic rod. The electric telescopic rod and the second fixed base plate are positioned and installed using the support chassis and the fourth positioning bolts. The second fixed base plate provides secondary support for the entire equipment, improving the stability of the equipment during normal operation. A control panel is installed on the outside of the freight elevator. The electric telescopic rod and the acceleration sensor are electrically connected to the control panel. The control panel is used to control the operation of the electric telescopic rod and the acceleration sensor, realizing unified management of the electrical equipment.

[0018] The technical effect of adopting the above-mentioned further solution is that the control panel is used to control the operation of the electric telescopic pole and the acceleration sensor, realizing unified management of power equipment.

[0019] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0020] By incorporating a freight elevator, electric telescopic boom, movable frame, and a buffer anti-fall mechanism, the height of the drive limit frame is adjusted, thereby adjusting the height of the outer movable frame for normal lifting operations. The positioning plate limits the sliding of the connecting block. The first spring rope, second spring rope, and reinforcing connecting rope, all of which are telescopic, provide initial buffering during the movement of the movable frame, achieving a primary anti-fall effect. Multiple first limit plates, positioning blocks, and third positioning bolts work together to limit the bottom of the movable frame during movement, providing a secondary anti-fall effect. Multiple limit pulleys rolling on the outside of the mounting guide rails also buffer the movement speed of the movable frame, providing a tertiary anti-fall effect, thus improving the overall safety of the equipment. An acceleration sensor monitors the speed of the movable frame during its overall sliding. A control panel is installed on the outside of the freight elevator. The symmetrically distributed reinforcing side plates installed between the mobile frame and the placement platform provide reinforcement and support. The placement platform facilitates the placement of the items to be transported. The simultaneous installation of a second spring rope and a reinforcing connecting rope between the second mounting block and the buffer plate improves the service life of the equipment. The second mounting block, after its height adjustment, is positioned and installed using the fifth positioning bolt. The height of the buffer anti-fall mechanism can be adjusted according to the needs of the work scenario, improving the flexibility of equipment use. The first positioning bolt is used to position the first fixed base plate to the installation ground, providing primary support for the entire equipment. The electric telescopic rod and the second fixed base plate are positioned and installed using the support chassis and the fourth positioning bolt. The second fixed base plate provides secondary support for the entire equipment, improving the stability of the equipment during normal operation. Attached Figure Description

[0021] Figure 1 A schematic diagram of the overall structure of a fall protection structure provided by this utility model. Figure 1 ;

[0022] Figure 2 A schematic diagram of the overall structure of a fall protection structure provided by this utility model. Figure 2 ;

[0023] Figure 3 An enlarged schematic diagram of a buffer fall protection mechanism for a fall protection structure provided by this utility model;

[0024] Figure 4 The present invention provides an attachment for a fall protection structure. Figure 1 Enlarged schematic diagram of the structure at point A in the diagram;

[0025] Figure 5 The present invention provides an attachment for a fall protection structure. Figure 1 Enlarged schematic diagram of the structure at point B in the diagram.

[0026] Legend:

[0027] 1. Freight elevator; 11. First fixed base plate; 12. First positioning bolt; 13. Second positioning bolt; 14. First limiting plate; 15. Positioning block; 16. Third positioning bolt; 17. Second limiting plate; 18. Reinforcing plate;

[0028] 2. Electric telescopic pole; 21. Support chassis; 22. Second fixed base plate; 23. Fourth positioning bolt; 24. Limiting frame; 25. Connecting block; 26. Positioning plate;

[0029] 3. Movable frame; 31. Placement platform; 32. Reinforced side plate; 33. Auxiliary connecting plate; 34. Acceleration sensor;

[0030] 4. Buffer and anti-fall mechanism; 41. First spring rope; 42. First hook; 43. First mounting block; 44. Second mounting block; 45. Fifth positioning bolt; 46. Buffer plate; 47. Second spring rope; 48. Reinforcing connecting rope;

[0031] 5. Install the guide rails;

[0032] 6. Positioning plate; 61. Mounting base; 62. Fixing frame; 63. Limiting pulley; 64. Limiting shaft; 65. Mounting baffle; 66. Buffer spring; 67. Damping shock absorber. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] like Figures 1-5 As shown, this embodiment provides a technical solution: a fall prevention structure, including a freight elevator 1, an installation guide rail 5 installed on one side of the freight elevator 1, and equidistantly distributed reinforcing plates 18 fixedly connected inside the freight elevator 1. The freight elevator 1 is reinforced as a whole by multiple reinforcing plates 18. A movable frame 3 is slidably connected to the outside of the installation guide rail 5, and a placement platform 31 is fixedly connected to one side of the movable frame 3. A positioning plate 6 is installed at the connection between the movable frame 3 and the installation guide rail 5. The positioning plate 6 is located on the top of the movable frame 3. Equidistantly distributed mounting seats 61 are installed on the top of the positioning plate 6. Two fixed frames 62 are installed on the outside of each mounting seat 61, and a limit pulley 63 is rotatably connected between the two fixed frames 62 on the same side.

[0035] In this solution, a positioning plate 26 is fixedly connected inside the freight elevator 1. A connecting block 25 is slidably connected to one side of the positioning plate 26. An electric telescopic rod 2 is installed on one side of the connecting block 25. A limit frame 24 is fixedly connected to the output end of the electric telescopic rod 2. The limit frame 24 is connected to the connecting block 25. The outer side of the limit frame 24 is connected to the movable frame 3. The operation of the electric telescopic rod 2 drives the limit frame 24 to adjust its height, thereby driving the outer movable frame 3 to adjust its height and perform normal lifting operations. The positioning plate 26 limits the sliding of the connecting block 25.

[0036] In this design, two buffer anti-fall mechanisms 4 are installed between the freight elevator 1 and the mounting rail 5. The two buffer anti-fall mechanisms 4 are symmetrically distributed. Each buffer anti-fall mechanism 4 includes a first spring rope 41. Two first mounting blocks 43 are fixedly connected to the top of the mounting rail 5. A first hook 42 is fixedly connected to the top of each of the two first mounting blocks 43. A first spring rope 41 is fixedly connected to the top of each of the first hooks 42. A buffer plate 46 is fixedly connected to the top of each of the first spring ropes 41. Second mounting blocks 44 are installed on both sides of the freight elevator 1. A second spring rope 47 is fixedly connected to the bottom of each of the second mounting blocks 44. One end of each spring rope 47 is connected to a corresponding buffer plate 46. Since the first spring rope 41, the second spring rope 47, and the reinforcing connecting rope 48 can all be telescopic, they provide a buffering effect when the moving frame 3 moves as a whole, achieving a first-stage anti-fall effect. Multiple first limit plates 14, positioning blocks 15, and third positioning bolts 16 work together to limit the bottom of the moving frame 3 when it moves, providing a second-stage anti-fall effect. Multiple limit pulleys 63 roll on the outside of the mounting guide rail 5, which can also buffer the movement speed of the moving frame 3, providing a third-stage anti-fall effect, thereby improving the overall safety of the equipment.

[0037] Going a step further, such as Figures 1-3 As shown: In this scheme, the bottom of the placement platform 31 is fixedly connected to two symmetrically distributed reinforcing side plates 32. The other end of each reinforcing side plate 32 is fixedly connected to an auxiliary connecting plate 33. One side of each auxiliary connecting plate 33 is connected to the moving frame 3. An acceleration sensor 34 is fixedly connected to the outside of the auxiliary connecting plate 33 and above the reinforcing side plate 32. The acceleration sensor 34 is used to monitor the speed when the moving frame 3 slides as a whole. By installing symmetrically distributed reinforcing side plates 32 between the moving frame 3 and the placement platform 31, a reinforcing and supporting effect is achieved. The placement platform 31 facilitates the placement of the items to be transported.

[0038] Going a step further, such as Figures 1-3 As shown: In this scheme, a first limiting plate 14 is installed between the freight elevator 1 and the mounting guide rail 5 at equal intervals. A positioning block 15 extending into the interior of the mounting guide rail 5 is fixedly connected to one side of each first limiting plate 14. A third positioning bolt 16 extending into the interior of the mounting guide rail 5 is threadedly connected to the outer side of each first limiting plate 14. The third positioning bolt 16 is used to position and install the first limiting plate 14 and the mounting guide rail 5, and to limit the bottom when moving. A second limiting plate 17 is installed between the freight elevator 1 and the mounting guide rail 5 and above the first limiting plate 14. A second positioning bolt 13 extending into the interior of the mounting guide rail 5 is threadedly connected to the outer side of each second limiting plate 17. The second positioning bolt 13 is used to position and install the second limiting plate 17 and the mounting guide rail 5, and to limit the top when moving.

[0039] Going a step further, such as Figures 4-5As shown, in this scheme, the mounting guide rail 5 is provided with limiting grooves around its perimeter to cooperate with the limiting pulley 63 for sliding. The outer side of the fixing frame 62 is provided with limiting shafts 64 for use in limiting the limiting pulley 63. The top of the positioning plate 6 and one side of the mounting base 61 are provided with mounting baffles 65. Buffer springs 66 are installed between the mounting baffles 65 and the mounting base 61. Damping shock absorbers 67 are installed inside the buffer springs 66. The buffer springs 66 and the damping shock absorbers 67 work together to buffer and protect the mounting base 61 when it vibrates.

[0040] In this design, the outer side of the second mounting block 44 is threaded with a fifth positioning bolt 45 extending into the interior of the freight elevator 1. A reinforcing connecting rope 48 is installed between the buffer plate 46 and the second mounting block 44 and on one side of the second spring rope 47. By simultaneously installing the second spring rope 47 and the reinforcing connecting rope 48 between the second mounting block 44 and the buffer plate 46, the service life of the equipment is improved. The second mounting block 44 is positioned and installed after the height adjustment is completed by the fifth positioning bolt 45. At the same time, the height of the buffer anti-fall mechanism 4 can be adjusted according to the needs of the operation scenario, which improves the flexibility of the equipment during use.

[0041] Going further, such as Figures 1-4 As shown in the figure, in this scheme, the bottom of the freight elevator 1 is fixedly connected to a first fixed base plate 11. The inside of the first fixed base plate 11 and the perimeter of the freight elevator 1 are threaded with first positioning bolts 12. The first positioning bolts 12 are used to position the first fixed base plate 11 to the installation ground and provide initial support for the entire equipment.

[0042] In this design, a second fixed base plate 22 is installed at the bottom of the freight elevator 1, between two first fixed base plates 11. A support chassis 21 is fixedly connected to the bottom of the electric telescopic rod 2. Fourth positioning bolts 23 extending into the second fixed base plate 22 are threadedly connected to the top of the support chassis 21 and around the electric telescopic rod 2. The electric telescopic rod 2 and the second fixed base plate 22 are positioned and installed by the support chassis 21 and the fourth positioning bolts 23. The second fixed base plate 22 provides secondary support for the entire equipment, improving the stability of the equipment during normal operation. A control panel is installed on the outside of the freight elevator 1. The electric telescopic rod 2 and the acceleration sensor 34 are electrically connected to the control panel. The control panel is used to control the operation of the electric telescopic rod 2 and the acceleration sensor 34, realizing unified management of the electrical equipment.

[0043] Working principle:

[0044] like Figures 1-5 As shown:

[0045] By setting up a freight elevator 1, an electric telescopic rod 2, a movable frame 3, and a buffer anti-fall mechanism 4, when in use, the control panel on the outside of the freight elevator 1 is opened, and the electric telescopic rod 2 is operated to drive the limit frame 24 to adjust the height, thereby driving the movable frame 3 on the outside to adjust the height for normal lifting and lowering operations.

[0046] The positioning plate 26 limits the sliding of the connecting block 25. The first spring rope 41, the second spring rope 47, and the reinforcing connecting rope 48 can all be extended and retracted, providing a buffer when the moving frame 3 moves as a whole, thus achieving a fall prevention effect.

[0047] Multiple first limit plates 14, positioning blocks 15 and third positioning bolts 16 work together to limit the bottom of the moving frame 3 when it moves, and perform secondary anti-fall treatment.

[0048] Multiple limiting pulleys 63 roll on the outside of the mounting rail 5, which can also buffer the movement speed of the moving frame 3 and perform three anti-fall measures, thereby improving the overall safety of the equipment.

[0049] The acceleration sensor 34 is used to monitor the speed of the moving frame 3 as it slides. A control panel is installed on the outside of the freight elevator 1. The electric telescopic rod 2 and the acceleration sensor 34 are both electrically connected to the control panel. The control panel is used to control the operation of the electric telescopic rod 2 and the acceleration sensor 34, realizing unified management of the power equipment.

[0050] The symmetrically distributed reinforcing side plates 32 installed between the mobile frame 3 and the placement platform 31 provide reinforcement and support. The placement platform 31 facilitates the placement of the items to be transported. The third positioning bolt 16 is used to position and install the first limiting plate 14 and the mounting rail 5, and to limit the bottom during movement.

[0051] The second positioning bolt 13 is used to position and install the second limiting plate 17 and the mounting guide rail 5, and to limit the top when moving. The buffer spring 66 and the damping shock absorber 67 work together to buffer and protect the mounting base 61 when it vibrates. The service life of the equipment is improved by installing the second spring rope 47 and the reinforcing connecting rope 48 between the second mounting block 44 and the buffer plate 46.

[0052] The second mounting block 44, after its height has been adjusted, is positioned and installed using the fifth positioning bolt 45. At the same time, the height of the buffer anti-fall mechanism 4 can be adjusted according to the needs of the work scenario, which improves the flexibility of the equipment during use. The first positioning bolt 12 is used to position the first fixed base plate 11 to the installation ground and to provide initial support for the entire equipment.

[0053] The electric telescopic rod 2 and the second fixed base plate 22 are positioned and installed by supporting the chassis 21 and the fourth positioning bolt 23. The second fixed base plate 22 provides secondary support for the entire equipment, which improves the stability of the equipment during normal operation.

[0054] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A fall protection structure, comprising a freight elevator (1), characterized in that, The freight elevator (1) is equipped with an installation guide rail (5) on one side, and is fixedly connected with equidistantly distributed reinforcing plates (18) inside the freight elevator (1). The installation guide rail (5) is slidably connected with a movable frame (3) on the outside, and is fixedly connected with a placement platform (31) on one side of the movable frame (3). A positioning plate (6) is installed at the connection between the movable frame (3) and the mounting guide rail (5). The top of the positioning plate (6) is equipped with equally spaced mounting seats (61). Two fixed frames (62) are installed on the outer side of each mounting seat (61). Limiting pulleys (63) are rotatably connected between the two fixed frames (62) on the same side. The freight elevator (1) is fixedly connected to a positioning plate (26), and a connecting block (25) is slidably connected to one side of the positioning plate (26). An electric telescopic rod (2) is installed on one side of the connecting block (25), and a limit frame (24) is fixedly connected to the output end of the electric telescopic rod (2). Two buffer anti-fall mechanisms (4) are installed between the freight elevator (1) and the mounting rail (5). The buffer anti-fall mechanism (4) includes a first spring rope (41). Two first mounting blocks (43) are fixedly connected to the top of the mounting rail (5). A first hook (42) is fixedly connected to the top of each of the two first mounting blocks (43). A first spring rope (41) is fixedly connected to the top of each of the first hooks (42). A buffer plate (46) is fixedly connected to the top of each of the first spring ropes (41). A second mounting block (44) is installed on both sides of the freight elevator (1). A second spring rope (47) is fixedly connected to the bottom of each of the second mounting blocks (44).

2. The fall protection structure according to claim 1, characterized in that: The bottom of the placement platform (31) is fixedly connected to two symmetrically distributed reinforcing side plates (32). The other end of each reinforcing side plate (32) is fixedly connected to an auxiliary connecting plate (33). One side of each auxiliary connecting plate (33) is connected to the moving frame (3). An acceleration sensor (34) is fixedly connected to the outside of each auxiliary connecting plate (33) and above the reinforcing side plate (32).

3. The fall protection structure according to claim 1, characterized in that: A first limiting plate (14) is installed between the freight elevator (1) and the mounting rail (5) at equal intervals. A positioning block (15) extending into the mounting rail (5) is fixedly connected to one side of the first limiting plate (14). A third positioning bolt (16) extending into the mounting rail (5) is threadedly connected to the outer side of the first limiting plate (14). The third positioning bolt (16) is used to position the first limiting plate (14) and the mounting rail (5) and limit the bottom when moving. A second limiting plate (17) is installed between the freight elevator (1) and the mounting rail (5) and above the first limiting plate (14). A second positioning bolt (13) extending into the mounting rail (5) is threadedly connected to the outer side of the second limiting plate (17).

4. The fall protection structure according to claim 3, characterized in that: The mounting guide rail (5) is provided with a limiting groove around its perimeter to allow sliding of the limiting pulley (63). The outer side of the fixed frame (62) is provided with a limiting shaft (64) for limiting the limiting pulley (63). The top of the positioning plate (6) and the side of the mounting base (61) are provided with a mounting baffle (65). A buffer spring (66) is provided between the mounting baffle (65) and the mounting base (61). A damping shock absorber (67) is provided inside the buffer spring (66).

5. The fall protection structure according to claim 4, characterized in that: The outer side of the second mounting block (44) is threaded with a fifth positioning bolt (45) extending into the interior of the freight elevator (1). The buffer plate (46) and the second mounting block (44) are each equipped with a reinforcing connecting rope (48) on one side of the second spring rope (47).

6. The fall protection structure according to claim 1, characterized in that: The bottom of each freight elevator (1) is fixedly connected to a first fixed base plate (11), and the inside of the first fixed base plate (11) and around the perimeter of the freight elevator (1) are threaded with first positioning bolts (12).

7. The fall protection structure according to claim 6, characterized in that: A second fixed base plate (22) is installed at the bottom of the freight elevator (1) and between the two first fixed base plates (11). A support chassis (21) is fixedly connected to the bottom of the electric telescopic rod (2). A fourth positioning bolt (23) extending into the second fixed base plate (22) is threadedly connected to the top of the support chassis (21) and around the electric telescopic rod (2).

Images