Anti-falling safety structure of lifting goods elevator

Abstract

The utility model relates to the technical field of lifting goods elevators, and discloses a lifting goods elevator anti-falling safety structure which comprises a goods elevator platform and arranged side connecting columns, and a protective fence is additionally arranged at the top of the goods elevator platform. The driving motor is coaxially connected with a rotating shaft, and a spiral groove is formed in the surface of the rotating shaft; the protective fence comprises an upper protective fence body and a lower protective fence body, the outer side of the upper protective fence body and the outer side of the lower protective fence body are connected with side connecting bases, telescopic columns are evenly installed between the upper protective fence body and the lower protective fence body, and limiting bolts are installed on the outer sides of the side connecting bases. According to the anti-falling safety structure for the lifting goods elevator, the driving motor drives the rotating shaft and the limiting bolt to drive the upper guardrail and the telescopic end of the telescopic column to ascend and descend along the spiral groove, so that the upper guardrail ascends. On one hand, the stability of the lifting process is guaranteed, and the anti-falling safety is improved; and on the other hand, the side connecting bases can do lifting motion along the inner walls of the side connecting columns, and therefore the stability of the side connecting bases and the connecting structures of the side connecting bases in the lifting process is further guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of lifting elevator technology, specifically a safety structure for preventing lifting elevators from falling. Background Technology

[0002] Freight elevators, also known as cargo elevators or freight lifts, are vertical transportation devices specifically designed for transporting goods. They were originally designed to address the need for vertical goods transport, particularly in locations such as factories, warehouses, shopping malls, and libraries where frequent goods movement is required. Freight elevators are mechanical devices used for vertical goods transport and are widely used in factories, warehouses, shopping malls, hotels, and other places. They can be categorized into hydraulically driven, electrically driven, and pneumatically driven types. To ensure personal safety and protect the safety of goods, freight elevators require the installation of anti-fall safety structures.

[0003] Common safety structures for preventing falls in freight elevators typically consist of a height limiter, safety hook, safety brake, and fall arrestor. The height limiter controls the elevator's travel. The safety hook provides additional safety during operation. The safety brake activates quickly in emergencies, securing the elevator to the guide rails and preventing further descent. The fall arrestor mechanically secures the car or lifting platform to the guide rails in the event of an accidental fall, preventing a rapid descent.

[0004] Traditional safety structures for preventing falls in freight elevators typically include guardrails to ensure the safety of workers and prevent goods from falling. However, these guardrails often have a fixed height and cannot be adjusted to adapt to the surrounding environment. This means that when the total height of goods piled up inside the elevator becomes too high, the guardrails lose their effectiveness in preventing falls and ensuring the safety of the goods inside. To address this issue, some safety structures for freight elevators divide the guardrail into upper and lower sections, adding threaded rods and sliders to the sides. The sliders are then connected to the upper guardrail, allowing for height adjustment. However, this method relies on threaded connections for lifting and lowering, and the vibrations generated during elevator movement not only compromise stability during lifting but also reduce fall prevention safety. Therefore, a new safety structure for preventing falls in freight elevators is proposed. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides an improved safety structure for preventing falls in freight elevators, thereby solving the aforementioned technical problems that not only fail to guarantee stability during lifting but also reduce fall prevention safety.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a safety structure for preventing a freight elevator from falling, comprising:

[0009] The freight elevator platform, and the side columns around the freight elevator platform, with protective side panels installed between the side columns, and a guardrail added to the top of the freight elevator platform.

[0010] A drive motor is located at the top of the side connecting column, and a rotating shaft is rotatably connected to the inner cavity of the side connecting column. The drive motor is coaxially connected to the rotating shaft, and spiral grooves are evenly formed on the surface of the rotating shaft.

[0011] The guardrail comprises an upper guardrail and a lower guardrail, both of which are rotatably connected to side connecting seats on their outer sides. Telescopic columns are evenly installed between the upper and lower guardrails. Limit bolts are installed on the outer sides of the side connecting seats, and these limit bolts are movably connected to spiral grooves. After the goods are placed on top of the freight elevator platform and the guardrail is closed, the drive motor rotates the shaft on the side connecting columns. The limit bolts, according to the rotation direction of the shaft, move the side connecting seats and the upper guardrail along the spiral grooves, causing them to rise and fall. Simultaneously, the upper guardrail moves the telescopic ends of the telescopic columns in the same direction, raising the upper guardrail to the same height as the goods. This design not only ensures stability during lifting but also improves safety against falls. Furthermore, the side connecting seats can move up and down along the inner wall of the side connecting columns, further ensuring the stability of the side connecting seats and their connecting structures during lifting.

[0012] Preferably, a connecting plate is connected directly above the side connecting column, and a connecting hole is provided on the upper surface of the connecting plate. The side connecting column can be connected to the corresponding structure through the connecting plate and the connecting hole.

[0013] Preferably, a fixed column is installed at the telescopic end of the telescopic column, and a limiting cylinder is sleeved on the lower part of the fixed column, with a return spring sleeved on the surface of the limiting cylinder. The limiting cylinder can move up and down along the surface of the fixed column, and at the same time, the limiting cylinder can drive the return spring to move in the same direction.

[0014] Preferably, a top plate is added to the top of the fixed column, and the top plate is connected to the limiting cylinder. The top plate can drive the limiting cylinder to move in the same direction along the fixed column, such as rotating or lifting.

[0015] Preferably, the top of the upper guardrail has evenly spaced limiting holes, and the top of each limiting hole has a limiting groove. The limiting holes and limiting grooves correspond to the shape and position of the top plate. The top plate can move along the limiting holes, and can also be inserted into the limiting groove for a secure fit.

[0016] Preferably, fixed side posts are installed on both sides of the inner wall of the limiting hole, and the ends of the return springs are respectively engaged with the limiting cylinder and the fixed side posts. The limiting cylinder is designed to be narrower at the top and wider at the bottom, and the telescopic column is threadedly connected to the lower guardrail. After threading the bottom end of the telescopic column to the lower guardrail, the upper guardrail is then engaged with the top end of the telescopic column. The top plate drives the limiting cylinder to rise along the fixed column and the limiting hole. The limiting cylinder drives the return spring to contact the fixed side posts and compress them. When the top plate rises above the top of the limiting hole, it rotates so that the top plate aligns with the limiting groove. The limiting cylinder can then descend along the fixed column under the action of the return spring, making the top plate and the limiting groove fit tightly together. This not only facilitates the assembly and disassembly of the telescopic column with the upper and lower guardrails, but also allows for adjustment of the overall lifting height of the guardrail.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides a safety structure for preventing freight elevators from falling, which has the following beneficial effects:

[0019] This freight elevator's anti-fall safety structure works by placing goods on top of the elevator platform and closing the guardrail. A drive motor rotates a shaft on the side connecting column. A limit bolt, following the shaft's rotation, moves the side connecting seat and upper guardrail along a spiral groove, raising and lowering them. The side connecting seat moves along the inner wall of the side connecting column, further ensuring the stability of the side connecting seat and its connecting structure during lifting. Simultaneously, the upper guardrail moves the telescopic end of the telescopic column in the same direction, raising the upper guardrail to the same height as the goods. This not only ensures stability during lifting but also enhances anti-fall safety. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the internal structure of the side connecting column of this utility model;

[0022] Figure 3 This is a schematic diagram of the protective structure of this utility model;

[0023] Figure 4 This is an enlarged cross-sectional view of the upper guardrail section of this utility model.

[0024] In the diagram: 1. Freight elevator platform; 2. Side connecting column; 3. Protective side plate; 4. Guardrail; 5. Drive motor; 6. Connecting plate; 7. Rotating shaft; 8. Spiral groove; 9. Side connecting seat; 10. Limit bolt; 11. Upper guardrail; 12. Lower guardrail; 13. Telescopic column; 14. Fixed column; 15. Limiting cylinder; 16. Return spring; 17. Top plate; 18. Limiting hole; 19. Limiting groove; 20. Fixed side column. Detailed Implementation

[0025] 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.

[0026] This utility model provides a technical solution, a safety structure for preventing freight elevators from falling, including: (See details) Figure 1 The elevator platform 1, and the side columns 2 set around the elevator platform 1, with protective side plates 3 installed between the side columns 2, and a guardrail 4 added to the top of the elevator platform 1.

[0027] Please see Figure 2 The drive motor 5 is located on the top of the side column 2, and the inner cavity of the side column 2 is rotatably connected to the rotating shaft 7. The drive motor 5 is coaxially connected to the rotating shaft 7, and spiral grooves 8 are evenly opened on the surface of the rotating shaft 7.

[0028] Please see Figure 3 The guardrail 4 includes an upper guardrail 11 and a lower guardrail 12, with side connecting seats 9 rotatably connected to the outer sides of both the upper and lower guardrails 11 and 12. Telescopic columns 13 are evenly installed between the upper and lower guardrails 11 and 12. Limit bolts 10 are installed on the outer sides of the side connecting seats 9, and these limit bolts 10 are movably connected to the spiral grooves 8. After the goods are placed on top of the freight elevator platform 1 and the guardrail 4 is closed, the drive motor 5 drives the rotating shaft 7 on the side connecting columns 2 to rotate. The limit bolts 10, according to the rotation direction of the rotating shaft 7, drive the side connecting seats 9 and the upper guardrail 11 to rise and fall along the spiral grooves 8. Simultaneously, the upper guardrail 11 drives the telescopic ends of the telescopic columns 13 to move in the same direction, raising the upper guardrail 11 to the same height as the goods. This not only ensures stability during the lifting process but also improves fall prevention safety. Furthermore, the side connecting seats 9 can move up and down along the inner wall of the side connecting columns 2, further ensuring the stability of the side connecting seats 9 and their connecting structures during the lifting process.

[0029] Please see Figure 2 A connecting plate 6 is connected directly above the side column 2, and a connecting hole is provided on the upper surface of the connecting plate 6. The side column 2 can be connected to the corresponding structure through the connecting plate 6 and the connecting hole.

[0030] Please see Figure 4The telescopic column 13 has a fixed column 14 installed at its telescopic end, and a limiting cylinder 15 is sleeved on the lower part of the fixed column 14, with a return spring 16 sleeved on the surface of the limiting cylinder 15. The limiting cylinder 15 can move up and down along the surface of the fixed column 14, and at the same time, the limiting cylinder 15 can drive the return spring 16 to move in the same direction. A top plate 17 is added to the top of the fixed column 14, and the top plate 17 is connected to the limiting cylinder 15. The top plate 17 can drive the limiting cylinder 15 to move in the same direction along the fixed column 14, such as rotating or lifting. Limiting holes 18 are evenly opened on the top of the upper guardrail 11, and limiting grooves 19 are opened at the top of the limiting holes 18. The limiting holes 18 and limiting grooves 19 correspond to the shape and position of the top plate 17. The top plate 17 can move along the limiting holes 18, and at the same time, the top plate 17 can be inserted into the interior of the limiting groove 19 for fitting. Fixed side posts 20 are installed on both sides of the inner wall of the limiting hole 18, and the ends of the return spring 16 are respectively attached to the limiting cylinder 15 and the fixed side posts 20. The limiting cylinder 15 is designed to be narrower at the top and wider at the bottom, and the telescopic column 13 is threadedly connected to the lower guardrail 12. After the bottom end of the telescopic column 13 is threadedly connected to the lower guardrail 12, the upper guardrail 11 is attached to the top end of the telescopic column 13. The top plate 17 drives the limiting cylinder 15 to rise along the fixed column 14 and the limiting hole 18. The limiting cylinder 15 drives the return spring 16 to contact the fixed side posts 20 and squeeze them. When the top plate 17 rises above the top end of the limiting hole 18, it rotates so that the top plate 17 corresponds to the position of the limiting groove 19. The limiting cylinder 15 can descend along the fixed column 14 under the action of the return spring 16, so that the top plate 17 and the limiting groove 19 are tightly attached. It not only facilitates the disassembly and assembly of the telescopic post 13 with the upper guardrail 11 and the lower guardrail 12, but also allows for the adjustment of the overall lifting height of the guardrail 4.

[0031] This solution involves placing the goods on top of the freight elevator platform 1 and then closing the guardrail 4. The drive motor 5 drives the rotating shaft 7 to rotate on the side connecting column 2. The limit bolt 10, according to the direction of rotation of the rotating shaft 7, drives the side connecting seat 9 and the upper guardrail 11 to perform lifting and lowering operations along the spiral groove 8. At the same time, the upper guardrail 11 drives the telescopic end of the telescopic column 13 to move in the same direction, so that the upper guardrail 11 rises to the same height as the goods. First, connect the bottom end of the telescopic column 13 to the lower guardrail 12 with threads. Then, attach the upper guardrail 11 to the top end of the telescopic column 13. The top plate 17 drives the limiting cylinder 15 to rise along the fixed column 14 and the limiting hole 18. The limiting cylinder 15 drives the return spring 16 to contact the fixed side column 20 and squeeze it. When the top plate 17 rises above the top end of the limiting hole 18, it rotates so that the top plate 17 corresponds to the position of the limiting groove 19. The limiting cylinder 15 can descend along the fixed column 14 under the drive of the return spring 16, so that the top plate 17 and the limiting groove 19 fit tightly together.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safety structure for preventing falls from a lifting freight elevator, characterized in that, include: The freight elevator platform (1) and the side columns (2) are arranged around the freight elevator platform (1), and protective side plates (3) are installed between the side columns (2), and a guardrail (4) is added to the top of the freight elevator platform (1). A drive motor (5) is located on the top of the side connecting column (2), and a rotating shaft (7) is rotatably connected to the inner cavity of the side connecting column (2). The drive motor (5) is coaxially connected to the rotating shaft (7), and a spiral groove (8) is evenly opened on the surface of the rotating shaft (7). The guardrail (4) includes an upper guardrail (11) and a lower guardrail (12), and the outer sides of the upper guardrail (11) and the lower guardrail (12) are rotatably connected with side connecting seats (9), and telescopic columns (13) are evenly installed between the upper guardrail (11) and the lower guardrail (12). The outer side of the side connecting seat (9) is equipped with a limit bolt (10), and the limit bolt (10) is movably connected with the spiral groove (8).

2. The safety structure for preventing a freight elevator from falling as described in claim 1, characterized in that: A connecting plate (6) is connected directly above the side connecting column (2), and a connecting hole is provided on the upper surface of the connecting plate (6).

3. The safety structure for preventing falls from a lifting freight elevator according to claim 1, characterized in that: The telescopic column (13) has a fixed column (14) installed at its telescopic end, and a limiting cylinder (15) is sleeved on the lower part of the fixed column (14), and a return spring (16) is sleeved on the surface of the limiting cylinder (15).

4. The safety structure for preventing a freight elevator from falling as described in claim 3, characterized in that: The top of the fixed column (14) is provided with a top plate (17), and the top plate (17) is connected to the limiting cylinder (15).

5. The safety structure for preventing a freight elevator from falling as described in claim 4, characterized in that: The top of the upper guardrail (11) is uniformly provided with limiting holes (18), and the top of the limiting holes (18) is provided with limiting grooves (19). The limiting holes (18) and limiting grooves (19) correspond to the shape and position of the top plate (17).

6. The safety structure for preventing a freight elevator from falling as described in claim 5, characterized in that: Fixed side posts (20) are installed on both sides of the inner wall of the limiting hole (18), and the end of the reset spring (16) is in contact with the limiting cylinder (15) and the fixed side post (20) respectively. The limiting cylinder (15) is designed to be narrow at the top and wide at the bottom, and the telescopic post (13) is threadedly connected to the lower guardrail (12).

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