High-place operation safety lifeline fixing device
By designing a high-altitude work safety lifeline fixing device including telescopic grooves, telescopic structures, ratchets, pawls and spring structures, the problem of excessive stretching of the snap structure in the prior art is solved, the stability and reliability of the device are improved, and the risk of staff falling is reduced.
Patent Information
- Application Number
- CN202421566068.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-07-04
AI Technical Summary
The clamping structure of the existing high-altitude operation safety lifeline fixing device is prone to excessive stretching under the action of long-term external forces, resulting in exceeding the design safety range, reducing the stability and reliability of the device, and increasing the risk of staff falling.
A high-altitude work safety lifeline fixing device including telescopic grooves, telescopic structures, ratchets, pawls and spring structures is designed. Through the mutual cooperation of the ratchet and the pawl, the resetting force of the spring structure is used to prevent the telescopic structure from being pulled out and prevent excessive stretching of the snap structure.
It effectively avoids excessive stretching of the snap structure, improves the stability and reliability of the fixture, and reduces the risk of structural damage and staff falling.
Smart Images
Figure CN222871199U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of high-altitude operations, and in particular relates to a high-altitude operation safety lifeline fixing device. Background Art
[0002] Working at height refers to various work activities performed at height, which may cause injury or death to workers due to falls. The definition of working at height and the specific height limit may vary depending on the regulations of the country or region, but in general, working at height usually refers to work performed at a height of more than 2 meters (about 6.5 feet).
[0003] In traditional height work safety systems, lifeline fixtures usually rely on connections to building structural beams to achieve worker safety protection. These fixtures are designed to adapt to structural beams of different sizes and usually use retractable snap-on connectors. However, this retractable snap-on structure has certain design defects during long-term use, especially when it is continuously subjected to tension. Specifically, due to long-term external force, these snap-on structures may be over-stretched, exceeding their designed safety range, thereby reducing the stability and reliability of the fixture. This over-stretching may cause structural damage to the fixture, which in turn affects the performance of the entire height work safety system and increases the risk of workers falling. Utility Model Content
[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a high-altitude operation safety lifeline fixing device to solve the problem mentioned in the above background technology that due to the long-term external force, these buckle structures may be over-stretched, resulting in exceeding the designed safety range, thereby reducing the stability and reliability of the fixing device. This over-stretching may cause structural damage to the fixing device, thereby affecting the performance of the entire high-altitude operation safety system and increasing the risk of workers falling.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-altitude working safety lifeline fixing device, comprising a device body, a telescopic groove is provided inside the device body, a telescopic structure is slidably connected inside the telescopic groove, a connecting plate is fixedly connected to the upper end of one side surface of the telescopic structure, a plurality of engaging teeth are provided on the lower surface of the connecting plate, a ratchet is rotatably connected to the inside of the side surface of the device body through a connecting structure, a pawl is rotatably connected to the side surface of the device body through a rotating shaft, a spring structure is provided between the upper surface of the pawl and the side surface of the device body, and a turning handle is fixedly connected to the outer end of the ratchet.
[0006] Preferably, the outer surface of the pawl is fixedly connected with a fixing rod.
[0007] Preferably, a rope buckle is fixedly connected to one side surface of the device body.
[0008] Preferably, a slot is provided on one end surface of the telescopic structure.
[0009] Preferably, the other end of the telescopic structure is rotatably connected to a clamping rod via a rotating shaft.
[0010] Preferably, one end of the clamping rod away from the rotating shaft is fixedly connected with a buckle.
[0011] Preferably, the ratchet and the connecting plate are meshed with each other via engaging teeth.
[0012] Compared with the prior art, the utility model provides a high-altitude operation safety lifeline fixing device, which has the following beneficial effects:
[0013] 1. The utility model cooperates with each other through the ratchet and pawl structures. When fixing the safety lifeline, the pawl is pulled upwards through the fixing rod. At this time, the spring structure is in a compressed state. Then, the turning handle is turned clockwise to drive the ratchet to rotate clockwise, so that the telescopic structure inside the telescopic slot slides to the front end until the extended length of the telescopic structure adapts to the structural beam of the building. Then, the fixing rod is released, and the spring structure will eject the pawl downward due to its resetting elastic force. The pawl is stuck between the teeth on the surface of the ratchet, thereby preventing the ratchet from continuing to rotate clockwise and causing the telescopic structure to be pulled out and cause structural damage. This effectively avoids the possibility that these buckle structures may be overstretched due to long-term external forces, resulting in exceeding their designed safety range, thereby reducing the stability and reliability of the fixing device. This over-travel stretching may cause structural damage to the fixing device, thereby affecting the performance of the entire height operation safety system and increasing the risk of workers falling.
[0014] 2. The utility model provides a telescopic slot, which facilitates the telescopic structure to be telescoped inside the telescopic slot, thereby facilitating the device to be fixed on the structural beams of buildings of different sizes. After the telescopic length of the telescopic structure of the device is adjusted through the provided slots and buckles, the clamping rod is rotated through the rotating shaft to make the buckle stuck in the inside of the slot, and then the safety lifeline is tied to the rope buckle to complete the installation of the safety lifeline for high-altitude operations. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0016] Figure 1 This is an axonometric diagram of a high-altitude operation safety lifeline fixing device proposed by the utility model;
[0017] Figure 2 The utility model provides a high-altitude operation safety lifeline fixing device Figure 1 The enlarged view of point A in the middle;
[0018] Figure 3 This is a top view of a high-altitude operation safety lifeline fixing device proposed by the utility model;
[0019] Figure 4 This is a cross-sectional view of the device body in a high-altitude operation safety lifeline fixing device proposed by the utility model;
[0020] Figure 5 It is a schematic diagram of another angle of the cross-sectional view of the device body in the high-altitude operation safety lifeline fixing device proposed by the utility model;
[0021] Figure 6 The utility model provides a high-altitude operation safety lifeline fixing device Figure 5 The enlarged view of point B in the middle;
[0022] In the figure: 1. device body; 2. telescopic structure; 3. card slot; 4. rotating shaft; 5. card rod; 6. buckle; 7. rope buckle; 8. connecting structure; 9. ratchet; 10. rotating shaft; 11. pawl; 12. spring structure; 13. fixing rod; 14. turning handle; 15. connecting plate; 16. engaging teeth; 17. telescopic slot. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] See also Figure 1-6The utility model provides a technical solution: a high-altitude operation safety lifeline fixing device, including a device body 1, a telescopic groove 17 is provided inside the device body 1, a telescopic structure 2 is slidably connected inside the telescopic groove 17, a connecting plate 15 is fixedly connected to the upper end of one side surface of the telescopic structure 2, a plurality of engaging teeth 16 are provided on the lower surface of the connecting plate 15, a ratchet 9 is rotatably connected to the inside of the side surface of the device body 1 through a connecting structure 8, a pawl 11 is rotatably connected to the side surface of the device body 1 through a rotating shaft 10, a spring structure 12 is provided between the upper surface of the pawl 11 and the side surface of the device body 1, a turning handle 14 is fixedly connected to the outer end of the ratchet 9, and the safety lifeline is fixed by the mutual cooperation of the ratchet 9 and the pawl 11 and other structures. At a certain time, the pawl 11 is pulled upward by the fixing rod 13. At this time, the spring structure 12 is in a compressed state. Then, the turning handle 14 is turned clockwise to drive the ratchet 9 to rotate clockwise, so that the telescopic structure 2 inside the telescopic slot 17 slides toward the front end until the extension length of the telescopic structure 2 adapts to the structural beam of the building. Then, the fixing rod 13 is released. The spring structure 12 will eject the pawl 11 downward due to its resetting elastic force. The pawl 11 is stuck between the teeth on the surface of the ratchet 9, thereby preventing the ratchet 9 from continuing to rotate clockwise and causing the telescopic structure 2 to be pulled out and cause structural damage. This effectively avoids the possibility that these buckle 6 structures may be overstretched due to long-term external force, resulting in exceeding the designed safety range, thereby reducing the stability and reliability of the fixing device. This over-travel stretching may cause structural damage to the fixing device, thereby affecting the performance of the entire high-altitude operation safety system and increasing the risk of workers falling. By setting the telescopic slot 17, it is convenient for the telescopic structure 2 to be telescoped inside the telescopic slot 17, thereby facilitating the device to be fixed on the structural beams of buildings of different sizes.
[0025] In the present invention, preferably, the outer surface of the pawl 11 is fixedly connected with a fixing rod 13 .
[0026] In the utility model, preferably, a rope buckle 7 is fixedly connected to one side surface of the device body 1 .
[0027] In the present invention, preferably, a slot 3 is provided on one end surface of the telescopic structure 2 .
[0028] In the present invention, preferably, the other end of the telescopic structure 2 is rotatably connected to a clamping rod 5 via a rotating shaft 4 .
[0029] In the utility model, preferably, one end of the clamping rod 5 away from the rotating shaft 4 is fixedly connected with a buckle 6. Through the provided clamping slot 3 and the buckle 6, after the telescopic length adjustment of the telescopic structure 2 of the device is completed, the clamping rod 5 is rotated through the rotating shaft 4 to make the buckle 6 stuck in the inside of the clamping slot 3, and then the safety lifeline is tied to the rope buckle 7, so that the installation of the safety lifeline for high-altitude operations can be completed.
[0030] In the present invention, preferably, the ratchet 9 and the connecting plate 15 are meshed with each other via the engaging teeth 16 .
[0031] The working principle and use process of the utility model are as follows: when in use, first slide the telescopic structure 2 into the telescopic slot 17 of the device body 1, and then fix the several engaging teeth 16 on the connecting plate 15. Next, rotate the ratchet 9 so that it engages with the engaging teeth 16 on the connecting plate 15. At this time, the pawl 11 is pulled upward by the fixing rod 13, so that the spring structure 12 is in a compressed state. Then, the turning handle 14 is turned clockwise to drive the ratchet 9 to rotate clockwise, so that the telescopic structure 2 inside the telescopic slot 17 slides toward the front end until the extended length of the telescopic structure 2 adapts to the structural beam of the building. When the fixing rod 13 is released, the spring structure 12 will eject the pawl 11 downward due to its resetting elastic force, and the pawl 11 will be stuck between the teeth on the surface of the ratchet 9, thereby preventing the ratchet 9 from continuing to rotate clockwise, causing the telescopic structure 2 to be pulled out and causing damage to the structure. Finally, the clamping rod 5 is rotated by the rotating shaft 4 so that the clamping buckle 6 is clamped in the inside of the clamping slot 3, and the safety lifeline is tied to the rope buckle 7, so that the installation of the safety lifeline for high-altitude operation can be completed.
[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A safety lifeline fixing device for working at heights, comprising a device body (1), characterized in that: A telescopic groove (17) is provided inside the device body (1), and a telescopic structure (2) is slidably connected inside the telescopic groove (17). A connecting plate (15) is fixedly connected to the upper end of a side surface of the telescopic structure (2), and a plurality of engaging teeth (16) are provided on the lower surface of the connecting plate (15). A ratchet (9) is rotatably connected to the inside of the side surface of the device body (1) via a connecting structure (8). A pawl (11) is rotatably connected to the side surface of the device body (1) via a rotating shaft (10), and a spring structure (12) is provided between the upper surface of the pawl (11) and the side surface of the device body (1). A turning handle (14) is fixedly connected to the outer end of the ratchet (9).
2. A high-altitude operation safety lifeline fixing device according to claim 1, characterized in that: The outer surface of the ratchet pawl (11) is fixedly connected to a fixing rod (13).
3. A high-altitude operation safety lifeline fixing device according to claim 1, characterized in that: A rope buckle (7) is fixedly connected to one side surface of the device body (1).
4. A high-altitude operation safety lifeline fixing device according to claim 1, characterized in that: A clamping groove (3) is provided on one end surface of the telescopic structure (2).
5. A high-altitude operation safety lifeline fixing device according to claim 1, characterized in that: The other end of the telescopic structure (2) is rotatably connected to a clamping rod (5) via a rotating shaft (4).
6. A safety lifeline fixing device for working at heights according to claim 5, characterized in that: One end of the clamping rod (5) away from the rotating shaft (4) is fixedly connected with a clamping buckle (6).
7. A high-altitude operation safety lifeline fixing device according to claim 1, characterized in that: The ratchet wheel (9) and the connecting plate (15) are meshed with each other via meshing teeth (16).