A self-locking device for a fibre rope

Abstract

The utility model discloses a kind of self-locking device for fiber rope, including body, brake wheel subassembly, opening device, the body upper side is equipped with connecting assembly fixed connection has buffer, the end of the buffer is equipped with metal hook, the body includes shell, rotating plate, fixed shaft one, knob, the brake wheel subassembly is fixed in the shell of body by fixed shaft one, the opening device includes compression spring and is equipped with button on compression spring.Compared with prior art, by setting "press-rotation" type opening structure, the opening operation is comfortable, and the safety of operation is increased. The brake wheel subassembly of speed lock increases the reliability of locking, avoids the phenomenon of mislock, makes the staff go up or down more smoothly, has buffer and metal hook, ensures that there is no greater impact on staff, and the connection between safety belt hanging point is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of fall protection technology for high-altitude operations, and in particular to a self-locking device for fiber ropes. Background Technology

[0002] At sites such as wind turbine towers, power grid towers, high-rise buildings, bridge piers, and mountain climbing, there are many temporary rope access channels made of fiber ropes, which require the use of self-locking devices for fiber ropes for safety protection.

[0003] Existing self-locking devices for fiber ropes mostly rely on a torsion spring for locking, which is prone to insensitive locking or jamming. Self-locking devices that trigger locking based on speed are gradually becoming available on the market. These are mostly sheet metal housings, typically with an open body, which poses a risk of accidental rope slippage. This type of rope mounting structure is not reliable enough. Utility Model Content

[0004] The purpose of this utility model is to provide a self-locking device for fiber ropes, which can overcome the shortcomings of the unreliable rope mounting structure of self-locking devices for fiber ropes and the tendency to jam when workers go up or down.

[0005] To achieve the above objectives, a self-locking device for fiber ropes is provided, comprising a body, a brake wheel assembly, and an opening device. The upper side of the body is provided with a connecting assembly that is fixedly connected to a buffer. The end of the buffer is provided with a metal hook. The body includes a housing, a rotating plate, a fixed shaft, and a knob. The brake wheel assembly is fixed to the housing of the body via the fixed shaft. The opening device includes a compression spring and a button provided on the compression spring. The button has a slot. The compression spring and the button are fixed to the button mounting hole on the housing by a screw passing through the slot.

[0006] As a further improvement to a self-locking device for fiber ropes, the rotating plate is provided with a positioning part one and a positioning part two, the positioning part one being an arc-shaped groove and the positioning part two being a round hole.

[0007] As a further improvement to a self-locking device for fiber ropes, the brake wheel assembly includes a rolling wheel, a brake arm, and a fixed arm. The rolling wheel is movably connected to the brake arm and the fixed arm via a fixed shaft. The ends of the brake arm and the fixed arm are fixedly connected by a fixed collar, and a torsion spring is installed on the outer side of the fixed collar.

[0008] As a further improvement to a self-locking device for fiber ropes, the connecting assembly includes a first connecting plate and a second connecting plate, which are fixedly connected to the housing via a second fixed shaft. The first connecting plate and the second connecting plate are rotatable around the second fixed shaft, and the ends of the first connecting plate and the second connecting plate are fixedly connected to a third fixed shaft and a second screw.

[0009] As a further improvement to a self-locking device for fiber ropes, the rolling wheel is provided with a braking block inside, the braking block having a guide post and meshing teeth, a limiting plate is provided on the outside of the braking block, the limiting plate has a guide groove and an annular recess on the outside, the guide groove accommodates the guide post, and an annular elastic element is provided in the annular recess.

[0010] During normal walking, the elastic element binds the guide post of the brake block, keeping the brake block within the receiving part. There is sufficient clearance between the brake block and the inner wall of the brake arm ring, preventing locking, and the roller can rotate normally. When a fall occurs, the speed increases, and the centrifugal force of the brake block increases, overcoming the binding force of the annular elastic element. Under the action of centrifugal force, the brake block moves outward, and the meshing teeth on the brake block mesh with the meshing inclined surface. When the brake block contacts the inner wall of the brake arm ring, the roller is locked, and the roller no longer rotates. The self-locking device also achieves self-locking on the rope.

[0011] In summary, this invention achieves a "press-rotate" opening method, resulting in a comfortable opening operation; the internal ropes cannot come loose when the rotating plate is fully closed; the rotating plate has two positioning parts, avoiding the possibility of misoperation and increasing operational safety. It also features a speed-locking brake wheel assembly, solving the technical problem of jamming that easily occurs when moving the worker up or down. With a buffer and metal ring, it ensures minimal impact on the worker and facilitates easier connection to the safety belt attachment point.

[0012] This invention offers the following advantages: Compared to existing technologies, the "press-rotate" opening structure improves operational comfort and safety. The speed-locking brake wheel assembly enhances locking reliability, prevents accidental locking, and facilitates smoother ascent and descent for workers. The inclusion of a buffer and metal hook ensures minimal impact on workers and facilitates easier connection to the safety belt attachment point. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0014] Figure 1 This is a schematic diagram of the overall structure of a self-locking device for fiber rope according to an embodiment of the present utility model;

[0015] Figure 2 This is a partial structural schematic diagram of a self-locking device for fiber rope according to an embodiment of the present utility model;

[0016] Figure 3 This is a schematic diagram of the rotating plate in the first stage of opening and closing according to an embodiment of the present utility model;

[0017] Figure 4 This is a schematic diagram of the rotating plate when it is fully open and closed according to an embodiment of the present utility model;

[0018] Figure 5 This is an exploded view of a partial structure of a self-locking device for fiber rope according to an embodiment of the present utility model;

[0019] Figure 6 This is an exploded view of the brake wheel assembly according to an embodiment of the present utility model.

[0020] Legend:

[0021] 1. Body; 11. Housing; 111. Rope receiving groove; 112. Limiting groove; 113. Button mounting hole; 12. Rotating plate; 121. Positioning part one; 122. Positioning part two; 13. Fixed shaft one; 14. Toggle switch; 141. Fixing component; 142. Cam part; 2. Opening device; 21. Button; 211. Slot; 22. Compression spring; 23. Screw one; 3. Connecting assembly; 31. Fixed shaft two; 32. Stepped washer; 33. Connecting plate one; 34. Connecting plate two; 35. Fixed shaft three; 36. Screw two; 4. Brake Wheel assembly; 41. Rolling wheel; 411. Receiving part; 412. Meshing inclined surface; 42. Brake block; 421. Guide post; 422. Meshing tooth; 43. Limiting plate; 431. Annular groove; 432. Guide groove; 44. Annular elastic element; 45. Washer; 46. Brake arm; 461. Arm ring; 462. Through hole one; 463. Spring mounting hole; 47. Fixed shaft four; 48. Fixed arm; 49. Torsion spring; 491. Spring rod one; 492. Spring rod two; 50. Fixed collar; 5. Buffer; 6. Metal hook. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] One embodiment of this utility model is as follows: Figures 1-4As shown, a self-locking device for fiber rope includes a body 1, a brake wheel assembly 4, and an opening device 2. A connecting assembly 3 is provided on the upper side of the body 1, and a buffer 5 is fixedly connected thereto. A metal hook 6 is provided at the end of the buffer 5. The body 1 includes a housing 11, a rotating plate 12, a fixed shaft 13, and a knob 14. The brake wheel assembly 4 is fixed to the housing 11 of the body 1 through the fixed shaft 13. Both the rotating plate 12 and the brake wheel assembly 4 can rotate around the fixed shaft 13.

[0024] One embodiment of this utility model is as follows: Figure 5 As shown, the opening device 2 includes a compression spring 22 and a button 21 provided on the compression spring 22. The button 21 has a slot 211. The compression spring 22 and the button 21 are fixed to the button mounting hole 113 on the housing 11 by a screw 23 passing through the slot 211.

[0025] One embodiment of this utility model is as follows: Figure 3 , Figure 4 As shown, the rotating plate 12 is provided with a positioning part 121 and a positioning part 122. The positioning part 121 is an arc-shaped groove, and the positioning part 122 is a round hole. The diameter of the round hole is larger than the diameter of the button 21.

[0026] When the self-locking device for the fiber rope needs to be opened, the operator presses button 21 and then rotates the rotating plate 12 downwards until the rotating plate 12 reaches the first stage of opening / closing (e.g., ...). Figure 3 At this point, the positioning part 121 is in contact with the cylindrical position of the button 21. If the button 21 is released at this time, the rotating plate 12 cannot continue to rotate downwards; if the button 21 is held down and rotated downwards, the rotating plate 12 will be fully opened (as shown). Figure 4 When the self-locking device for the fiber rope is installed on the fiber rope and needs to be locked, after rotating the rotating plate 12 upward, the front end of the rotating plate 12 returns to the limiting groove 112. Under the action of the compression spring 22, the button 21 is automatically lifted, thereby restricting the movement of the rotating plate 12 and forming a closed space. The rope is located in the rope receiving groove 111, and there is no possibility of the fiber rope coming out.

[0027] One embodiment of this utility model is as follows: Figure 5As shown, the brake wheel assembly 4 includes a rolling wheel 41, a brake support arm 46, and a fixed support arm 48. The rolling wheel 41 is movably connected to the brake support arm 46 and the fixed support arm 48 via a fixed shaft 47. The ends of the brake support arm 46 and the fixed support arm 48 are fixedly connected by a fixed collar 50. The fixed collar 50 is a stepped shaft with a through hole in the middle for the fixed shaft 13 to pass through. The thin shaft part at one end of the fixed collar 50 is installed in the through hole 462 on the brake support arm 46. A torsion spring 49 is installed on the outside of the fixed collar 50. The spring rod 491 of the torsion spring 49 passes through the spring mounting hole 463 on the brake support arm 46, and the spring rod 492 of the torsion spring 49 abuts against the inside of the housing 11.

[0028] In one embodiment of this utility model, the connecting component 3 includes a first connecting plate 33 and a second connecting plate 34. The first connecting plate 33 and the second connecting plate 34 are fixedly connected to the housing 11 via a second fixed shaft 31. A stepped washer 32 is provided between the first connecting plate 33, the second connecting plate 34 and the second fixed shaft 31. The first connecting plate 33 and the second connecting plate 34 can rotate around the second fixed shaft 31. The ends of the first connecting plate 33 and the second connecting plate 34 are fixedly connected to the third fixed shaft 35 and the second screw 36.

[0029] In one embodiment of this utility model, a knob 14 is provided on the housing 11. The front end of the knob 14 has a cam portion 142. The knob 14 is fixed to the housing 11 by a fixing member 141. When the knob 14 is pushed, it can drive the brake wheel assembly 4 to move forward, so as to achieve a tighter contact between the rolling wheel 41 and the fiber rope.

[0030] In one embodiment of this utility model, a brake block 42 is provided inside the rolling wheel 41. The brake block 42 has a guide post 421 and a meshing tooth 422. A limit plate 43 is provided on the outside of the brake block 42. A guide groove 432 and an annular groove 431 are provided on the outside of the limit plate 43. The guide groove 432 accommodates the guide post 421. An annular elastic element 44 is provided in the annular groove 431. A washer 45 is provided on the outside of the elastic element 44.

[0031] During normal walking, the elastic element 44 binds the guide post 421 of the brake block 42, so that the brake block 42 is located in the receiving part 411. There is sufficient gap between the brake block 42 and the inner wall of the support ring 461 of the brake arm 46, so it will not lock and the rolling wheel 41 can rotate normally. When a fall occurs, the speed increases and the centrifugal force of the brake block 42 increases, which overcomes the binding force of the annular elastic element 44. Under the action of centrifugal force, the brake block 42 moves outward. The meshing teeth 422 on the brake block 42 mesh with the meshing inclined surface 412. When the brake block 42 contacts the inner wall of the support ring 461 of the brake arm 46, the rolling wheel 41 is locked. At this time, the rolling wheel 41 no longer rotates, and the self-locking device also achieves self-locking on the rope.

[0032] In summary, this utility model, through its two-stage opening and closing structure, achieves a "press-rotate" opening method, resulting in a comfortable opening operation. When the rotating plate 12 is fully closed, the internal ropes cannot come loose. The rotating plate 12 has two positioning parts, preventing accidental operation and increasing operational safety. Simultaneously, the speed-locking brake wheel assembly 4 solves the problem of jamming that easily occurs when moving the worker up or down. The inclusion of a buffer 5 and a metal hook 5 ensures minimal impact on the worker and facilitates easier connection to the safety belt attachment point.

[0033] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A self-locking device for fiber ropes, comprising a body (1), a brake wheel assembly (4), and an opening device (2), characterized in that, The upper side of the main body (1) is provided with a connecting component (3) to which a buffer (5) is fixedly connected, and the end of the buffer (5) is provided with a metal hook (6). The main body (1) includes a housing (11), a rotating plate (12), a fixed shaft (13), and a knob (14). The brake wheel assembly (4) is fixed to the housing (11) of the main body (1) by a fixed shaft (13); The opening device (2) includes a compression spring (22) and a button (21) provided on the compression spring (22). The button (21) has a slot (211). The compression spring (22) and the button (21) are fixed inside the button mounting hole (113) on the housing (11) by a screw (23) passing through the slot (211).

2. A self-locking device for fiber ropes according to claim 1, characterized in that, The rotating plate (12) is provided with a positioning part one (121) and a positioning part two (122). The positioning part one (121) is configured as an arc groove, and the positioning part two (122) is configured as a round hole.

3. A self-locking device for fiber ropes according to claim 1, characterized in that, The brake wheel assembly (4) includes a rolling wheel (41), a brake arm (46), and a fixed arm (48). The rolling wheel (41) is movably connected to the brake arm (46) and the fixed arm (48) via a fixed shaft (47). The ends of the brake arm (46) and the fixed arm (48) are fixedly connected via a fixed collar (50). A torsion spring (49) is installed on the outer side of the fixed collar (50).

4. A self-locking device for fiber ropes according to claim 1, characterized in that, The connecting assembly (3) includes a connecting plate one (33) and a connecting plate two (34). The connecting plate one (33) and the connecting plate two (34) are fixedly connected to the housing (11) via a fixed shaft two (31). The connecting plate one (33) and the connecting plate two (34) can rotate around the fixed shaft two (31). The ends of the connecting plate one (33) and the connecting plate two (34) are fixedly connected to a fixed shaft three (35) and a screw two (36).

5. A self-locking device for fiber ropes according to claim 3, characterized in that, The rolling wheel (41) is provided with a brake block (42) inside. The brake block (42) has a guide post (421) and a meshing tooth (422). A limit plate (43) is provided on the outside of the brake block (42). A guide groove (432) and an annular groove (431) are provided on the outside of the limit plate (43). The guide groove (432) accommodates the guide post (421). An annular elastic element (44) is provided in the annular groove (431).

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