Lifting interlocking type safety protection device

Abstract

The utility model relates to the technical field of safety engineering, and discloses a hoisting interlocking type safety protection device which comprises a door frame, a connecting shaft is fixedly connected to the outer wall of the door frame, a protection door is rotatably connected to the outer wall of the connecting shaft, a handle is fixedly connected to the outer wall of the protection door, and an automatic door closing assembly is arranged on the outer wall of the door frame. A locking assembly is arranged on the outer wall of the door frame, the automatic door closing assembly comprises a supporting block, the inner wall of the supporting block is fixedly connected to the outer wall of the door frame, a first rotating column is rotationally connected to the lower surface of the supporting block, a second rotating column is rotationally connected to the lower surface of the first rotating column, and a rotating shaft is rotationally connected to the inner wall of the second rotating column. One end of the rotating shaft is rotationally connected with a damping rod, and the outer wall of the damping rod is fixedly connected with a gear. According to the safety protection device, the possibility that personnel are injured due to the fact that the personnel accidentally intrude into a lifting dangerous area is reduced, stable and reliable safety protection is provided for the lifting operation, and the probability of safety accidents is reduced.

Description

Technical Field

[0001] This utility model relates to the field of safety engineering technology, and in particular to a hoisting interlocking safety protection device. Background Technology

[0002] In modern industrial production and various hoisting operations, hoisting operations are frequent and involve the lifting and transportation of heavy objects. This process carries high safety risks. A hoisting interlocking safety protection device plays a crucial role in ensuring personnel safety and preventing accidents. It is a key piece of equipment for ensuring the safety of the hoisting operation area and avoiding personal injury and property damage. Its performance and reliability directly affect the safety of the entire hoisting operation.

[0003] Currently, in terms of safety protection for hoisting operations, some traditional protective devices use simple manual door structures. Ordinary doors are set up around the hoisting area, which rely on operators to manually open and close. The principle is mainly to prevent personnel from entering the dangerous hoisting area by opening and closing the door. Before the hoisting operation begins, the operator manually closes the door and then manually opens the door after the hoisting is completed. The structure and operation of this type of protective device are relatively simple, without complex mechanical linkage or automated control mechanisms.

[0004] However, this method of manually closing the safety door has drawbacks. In actual hoisting operations, operators usually need to handle multiple tasks simultaneously, resulting in high workload and mental stress. Under such circumstances, it is easy to fail to close the safety door in time due to negligence or being busy. Once the safety door is not closed, the hoisting area is in an unprotected state, and people around may accidentally enter without knowing it. If the hoisted load shakes or falls, it will cause serious injury to the intruders, greatly increasing the probability of safety accidents and posing a huge threat to the safety of people's lives. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a hoisting interlocking safety protection device, which aims to improve the problem that in traditional hoisting scenarios, if the protective door is closed manually, it is very easy for the operator to fail to close it in time due to negligence or being busy.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hoisting interlocking safety protection device, including a door frame, a connecting shaft fixedly connected to the outer wall of the door frame, a protective door rotatably connected to the outer wall of the connecting shaft, a handle fixedly connected to the outer wall of the protective door, an automatic closing component provided on the outer wall of the door frame, and a locking component provided on the outer wall of the door frame;

[0007] The automatic door closing assembly includes a support block, the inner wall of which is fixedly connected to the outer wall of the door frame. A first rotating column is rotatably connected to the lower surface of the support block, and a second rotating column is rotatably connected to the lower surface of the second rotating column. A rotating shaft is rotatably connected to the inner wall of the second rotating column, and a damping rod is rotatably connected to one end of the rotating shaft. A gear is fixedly connected to the outer wall of the damping rod, and a spring-loaded assembly is provided on the outer wall of the protective door.

[0008] Furthermore, the rebound assembly includes a support box, the inner wall of which is fixedly connected to the outer wall of the protective door, a spring is rotatably connected to the inner wall of the support box, a pressing block is fixedly connected to one end of the spring, a rack is fixedly connected to the outer wall of the pressing block, the gear teeth are meshed with the rack teeth, and a sliding column is fixedly connected to one end of the rack.

[0009] Furthermore, the locking assembly includes a fixing block, the inner wall of which is fixedly connected to the outer wall of the door frame. The outer wall of the fixing block has a fixing groove. A support platform is fixedly connected to the outer wall of the protective door. A fixing rod is slidably connected to the inner wall of the support platform. A sliding column is fixedly connected to the outer wall of the fixing rod. A sliding cylinder is slidably connected to the outer wall of the sliding column. A fixing rod is fixedly connected to one end of the sliding cylinder. A support platform is slidably connected to the outer wall of the fixing rod. A spring is sleeved on the outer wall of the sliding cylinder.

[0010] Furthermore, one end of the second spring is fixedly connected to the outer wall of the first fixed rod, and the other end of the second spring is fixedly connected to the outer wall of the second fixed rod.

[0011] Furthermore, the outer wall of the second support platform is fixedly connected to the inner wall of the protective door, and the second support platform is used to limit the movement of the second fixed rod.

[0012] Furthermore, the outer wall of the damping rod is rotatably connected to the inner wall of the support box, and the damping rod is used to drive the gear to rotate.

[0013] Furthermore, the outer wall of the extrusion block is slidably connected to the inner wall of the support box, and the extrusion block is used to extrude spring one.

[0014] Furthermore, the outer wall of the first fixing rod is slidably connected to the inside of the fixing groove, and the outer wall of the second fixing rod is slidably connected to the inside of the fixing groove.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, when the protective door is opened, pulling the handle causes the protective door to rotate around the connecting shaft, which in turn moves the support box and its internal rack. The rack drives the gear meshing with it to rotate, causing the damping rod of the fixed gear to rotate around the shaft. At the same time, the compression block compresses the spring to store energy, releasing the protective door. The spring pushes the compression block, causing the rack to move in the opposite direction. Through gear transmission, the protective door slowly closes around the connecting shaft. This solves the problem that in traditional hoisting scenarios, if the protective door is closed manually, it is easy for the operator to fail to close it in time due to negligence or busyness. This reduces the possibility of personnel being injured due to accidental entry into the hoisting danger zone, provides stable and reliable safety protection for hoisting operations, and reduces the probability of safety accidents.

[0017] 2. In this utility model, when the protective door is closed, the two fixed rods slide into the fixed groove and squeeze the spring. After they are in place, the spring rebounds and locks. When the door is released, the fixed rods are pressed to squeeze the spring, causing it to disengage from the fixed groove and unlock. This achieves the purpose of preventing the hoisted items from falling and injuring people, and improving the safety and stability of hoisting operations. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a hoisting interlocking safety protection device proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the protective door section of a hoisting interlocking safety protection device proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the gear part of a hoisting interlocking safety protection device proposed in this utility model;

[0021] Figure 4 for Figure 1 Enlarged diagram of point A in the middle.

[0022] Legend:

[0023] 1. Door frame; 2. Connecting shaft; 3. Protective door; 4. Handle; 5. Support block; 6. Support box; 7. Rotating column one; 8. Rotating column two; 9. Rotating shaft; 10. Damping rod; 11. Gear; 12. Rack; 13. Pressing block; 14. Spring one; 15. Sliding column one; 16. Fixing block; 17. Fixing groove; 18. Fixing rod one; 19. Support platform one; 20. Fixing rod two; 21. Support platform two; 22. Spring two; 23. Sliding column two; 24. Sliding cylinder. Detailed Implementation

[0024] 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.

[0025] Reference Figure 1 , Figure 2 and Figure 3 An embodiment of this utility model is provided: a hoisting interlocking safety protection device, including a door frame 1, a connecting shaft 2 fixedly connected to the outer wall of the door frame 1, a protective door 3 rotatably connected to the outer wall of the connecting shaft 2, a handle 4 fixedly connected to the outer wall of the protective door 3, an automatic closing component provided on the outer wall of the door frame 1, and a locking component provided on the outer wall of the door frame 1.

[0026] The automatic closing assembly includes a support block 5, the inner wall of which is fixedly connected to the outer wall of the door frame 1. A rotating column 7 is rotatably connected to the lower surface of the support block 5. A rotating column 8 is rotatably connected to the lower surface of the rotating column 7. A rotating shaft 9 is rotatably connected to the inner wall of the rotating column 8. A damping rod 10 is rotatably connected to one end of the rotating shaft 9. A gear 11 is fixedly connected to the outer wall of the damping rod 10. A spring-loaded assembly is provided on the outer wall of the protective door 3.

[0027] Specifically, when the protective door 3 is opened, the protective door 3 moves the support box 6, and the rack 12 inside the support box 6 moves accordingly, driving the gear 11 meshing with it to rotate. This causes the gear 11 fixed on the damping rod 10 to drive the damping rod 10 to rotate around the rotating shaft 9. The damping rod 10 then drives the rotating column 7 to rotate through the rotating column 8. During this process, the spring 14 is compressed and stored by the squeezing block 13. After the protective door 3 is released, the spring 14 returns to its original shape and pushes the squeezing block 13, causing the rack 12 to move in the opposite direction, driving the gear 11 and the damping rod 10 to rotate in the opposite direction. Finally, the protective door 3 slowly closes around the connecting shaft 2, realizing automatic closing.

[0028] Reference Figure 1 - Figure 4The rebound assembly includes a support box 6, whose inner wall is fixedly connected to the outer wall of the protective door 3. A spring 14 is rotatably connected to the inner wall of the support box 6. A pressing block 13 is fixedly connected to one end of the spring 14. A rack 12 is fixedly connected to the outer wall of the pressing block 13. The tooth end of the gear 11 meshes with the tooth end of the rack 12. A sliding column 15 is fixedly connected to one end of the rack 12. The locking assembly includes a fixing block 16, whose inner wall is fixedly connected to the outer wall of the door frame 1. A fixing groove 17 is provided on the outer wall of the fixing block 16. A support platform 19 is fixedly connected to the outer wall of the protective door 3. A fixing rod 18 is slidably connected to the inner wall of the support platform 19. A sliding column 23 is fixedly connected to the outer wall of the fixing rod 18. A sliding cylinder 24 is slidably connected to the outer wall of the sliding column 23. One end is fixedly connected to a fixing rod 20, and the outer wall of the fixing rod 20 is slidably connected to a support platform 21. The outer wall of the slide cylinder 24 is fitted with a spring 22. One end of the spring 22 is fixedly connected to the outer wall of the fixing rod 18, and the other end of the spring 22 is fixedly connected to the outer wall of the fixing rod 20. The outer wall of the support platform 21 is fixedly connected to the inner wall of the protective door 3. The support platform 21 is used to limit the fixing rod 20. The outer wall of the damping rod 10 is rotatably connected to the inner wall of the support box 6. The damping rod 10 is used to drive the gear 11 to rotate. The outer wall of the pressing block 13 is slidably connected to the inner wall of the support box 6. The pressing block 13 is used to press the spring 14. The outer wall of the fixing rod 18 is slidably connected to the inside of the fixing groove 17. The outer wall of the fixing rod 20 is slidably connected to the inside of the fixing groove 17.

[0029] Specifically, when the protective door 3 is closed, the first fixing rod 18 and the second fixing rod 20 move closer to the fixing block 16 as the protective door 3 approaches. After contacting the inclined surface of the fixing groove 17, they slide in and simultaneously compress the second spring 22. The second sliding rod 23 slides into the slide cylinder 24. After reaching the appropriate position, the second spring 22 rebounds and pushes the first fixing rod 18 away from the second fixing rod 20. The second sliding rod 23 slides out of the slide cylinder 24 to lock. When unlocking, pressing the first fixing rod 18 and the second fixing rod 20 compresses the second spring 22, and the second sliding rod 23 slides into the slide cylinder 24, causing the first fixing rod 18 and the second fixing rod 20 to disengage from the fixing groove 17.

[0030] Working principle: When a hoisting interlocking safety protection device is needed, when the protective door 3 is opened, the protective door 3 drives the support box 6 to move, and the rack 12 inside the support box 6 moves accordingly. Since the gear 11 meshes with the rack 12, the movement of the rack 12 drives the gear 11 to rotate. The gear 11 is fixed on the damping rod 10, which in turn causes the damping rod 10 to rotate around the rotating shaft 9. The rotation of the damping rod 10 then drives the rotating column 7 to rotate through the rotating column 8. At this time, the spring 14 is compressed by the compression block 13 to store elastic potential energy. When the protective door 3 is released, the spring 14 returns to its deformation and pushes the compression block 13. The compression block 13 drives the rack 12 to move in the opposite direction, the rack 12 drives the gear 11 to rotate in the opposite direction, and the gear 11 drives the damping rod 10 to rotate in the opposite direction, finally causing the protective door 3 to slowly close around the connecting shaft 2, realizing the automatic closing function. In addition, when the protective door 3 is closed, the fixed rod 18 and As the protective door 3 gradually approaches the fixing block 16, the second fixing rod 20 will gradually come into contact with the slope of the fixing groove 17. The opening of the fixing groove 17 is provided with a slope structure. As the protective door 3 continues to close, the first fixing rod 18 and the second fixing rod 20 will gradually come into contact with the slope of the fixing groove 17. When the first fixing rod 18 and the second fixing rod 20 enter the fixing groove 17, they will simultaneously compress the second spring 22. At this time, the second sliding rod 23 will slide into the sliding cylinder 24. When the first fixing rod 18 and the second fixing rod 20 reach the appropriate position, the second spring 22 will automatically rebound and push the first fixing rod 18 away from the second fixing rod 20. At this time, the second sliding rod 23 will slide out from the sliding cylinder 24, thus locking. When it is necessary to unlock, the first fixing rod 18 and the second fixing rod 20 will be pressed at the same time to compress the second spring 22. At this time, the second sliding rod 23 will slide into the sliding cylinder 24. Finally, the first fixing rod 18 and the second fixing rod 20 will be disengaged from the fixing groove 17 to unlock.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A safety device for overhead hoists, comprising a door frame (1), characterised in that: The outer wall of the door frame (1) is fixedly connected with a connecting shaft (2), the outer wall of the connecting shaft (2) is rotatably connected with a protective door (3), the outer wall of the protective door (3) is fixedly connected with a handle (4), the outer wall of the door frame (1) is provided with an automatic door closing assembly, and the outer wall of the door frame (1) is provided with a locking assembly. The automatic door closing assembly comprises a supporting block (5), the inner wall of the supporting block (5) is fixedly connected to the outer wall of the door frame (1), the lower surface of the supporting block (5) is rotatably connected with a rotating column I (7), the lower surface of the rotating column I (7) is rotatably connected with a rotating column II (8), the inner wall of the rotating column II (8) is rotatably connected with a rotating shaft (9), one end of the rotating shaft (9) is rotatably connected with a damping rod (10), the outer wall of the damping rod (10) is fixedly connected with a gear (11), and the outer wall of the protective door (3) is provided with a rebound assembly.

2. A suspended interlocked safety shield according to claim 1, wherein: The rebound assembly comprises a supporting box (6), the inner wall of the supporting box (6) is fixedly connected to the outer wall of the protective door (3), the inner wall of the supporting box (6) is rotatably connected with a spring I (14), one end of the spring I (14) is fixedly connected with a pressing block (13), the outer wall of the pressing block (13) is fixedly connected with a rack (12), the gear (11) is meshingly connected with the rack (12) at the tooth end, and one end of the rack (12) is fixedly connected with a sliding column I (15).

3. A safety device according to claim 1, wherein: The locking assembly comprises a fixed block (16), the inner wall of the fixed block (16) is fixedly connected to the outer wall of the door frame (1), the outer wall of the fixed block (16) is provided with a fixed groove (17), the outer wall of the protective door (3) is fixedly connected with a supporting table I (19), the inner wall of the supporting table I (19) is slidably connected with a fixed rod I (18), the outer wall of the fixed rod I (18) is fixedly connected with a sliding column II (23), the outer wall of the sliding column II (23) is slidably connected with a sliding cylinder (24), one end of the sliding cylinder (24) is fixedly connected with a fixed rod II (20), the outer wall of the fixed rod II (20) is slidably connected with a supporting table II (21), and the outer wall of the sliding cylinder (24) is sleeved with a spring II (22).

4. A suspended interlocked safety shield according to claim 3, wherein: One end of the spring II (22) is fixedly connected to the outer wall of the fixed rod I (18), and the other end of the spring II (22) is fixedly connected to the outer wall of the fixed rod II (20).

5. A safety device according to claim 3, wherein: The outer wall of the supporting table II (21) is fixedly connected to the inner wall of the protective door (3), and the supporting table II (21) is used for limiting the fixed rod II (20).

6. A load-latching safety shield according to claim 1, wherein: The outer wall of the damping rod (10) is rotatably connected to the inner wall of the supporting box (6), and the damping rod (10) is used for driving the gear (11) to rotate.

7. A suspended interlocked safety shield according to claim 2, wherein: The outer wall of the pressing block (13) is slidably connected to the inner wall of the supporting box (6), and the pressing block (13) is used for extruding the spring I (14).

8. A suspended interlocked safety shield according to claim 3, wherein: The outer wall of the fixed rod I (18) is slidably connected in the fixed groove (17), and the outer wall of the fixed rod II (20) is slidably connected in the fixed groove (17).

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