Lifeline energy buffer

Abstract

The utility model discloses a lifeline energy buffer, it includes square tube sleeve, and the buffer spring structure and two -stage buffer fishbone structure of one level in the sleeve, buffer spring structure contains spring, lifting lug, plug, baffle, pin shaft, plug is fixed in square tube sleeve one end, pin shaft is worn sleeve and is connected baffle with lifting lug, spring is worn pin shaft and is in contact baffle with plug, two -stage buffer fishbone structure contains pressing block, connecting bolt, fishbone hole part, and pressing block is located baffle far from spring side and is connected steel wire rope, and pressing block is fixed with sleeve through connecting bolt, and fishbone hole part is arranged on the lateral wall of sleeve and is formed by arc hole, and connecting bolt is located fishbone hole part near one -level buffer spring structure side. Pressing block is equipped with line slot hole and locking bolt, and the sleeve is opened slot mouth and is equipped with tension force scale at corresponding spring place. The buffer of the utility model adopts double energy absorption, and the safety factor is high, and the cost is low and easy to maintain, is applicable to various high altitude operation scene.

Description

Technical Field

[0001] This utility model relates to the field of energy buffer technology, and in particular to a lifeline energy buffer. Background Technology

[0002] In high-altitude operations such as construction, power maintenance, bridge construction, and installation of high-altitude equipment, workers face the risk of falls. In the event of a fall, the instantaneous impact can cause serious injury or even death. Therefore, lifeline systems, as core protective equipment for ensuring the safety of workers at height, have crucial energy buffers that effectively absorb energy and reduce the instantaneous impact during a fall, becoming a key element in protecting workers' lives.

[0003] Currently, most traditional lifeline energy buffers on the market employ a single buffer structure, such as relying solely on springs or using rope extension for energy absorption. These single-buffer structures have significant limitations: firstly, their buffering capacity is limited. When the fall height is high or the worker is heavy, a single buffer structure cannot adequately absorb the enormous energy generated by the fall, resulting in the instantaneous impact force exceeding the human body's tolerance and failing to effectively prevent injury; secondly, some traditional buffers, in pursuit of a better buffering effect, use complex hydraulic or pneumatic buffer components. These components are not only expensive to manufacture but also prone to problems such as hydraulic oil leakage and pneumatic seal failure during long-term use. Furthermore, some buffers have cumbersome structural designs, making installation and maintenance inconvenient.

[0004] Therefore, there is an urgent need to design a lifeline energy buffer device with a dual energy buffer structure, high safety factor and easy installation and maintenance, in order to make up for the shortcomings of existing technologies, provide more reliable safety protection for high-altitude workers, and meet the urgent demand of current high-altitude work scenarios for high-quality safety protection equipment. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a lifeline energy buffer, which adopts a dual energy buffer structure, has a high safety factor, low cost, is easy to maintain, and is highly versatile, meeting the safety protection needs of high-altitude operations such as construction.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a lifeline energy buffer, including a square tube sleeve and a primary buffer spring structure and a secondary buffer fishbone structure disposed inside the square tube sleeve;

[0007] The primary buffer spring structure achieves initial absorption and buffering of the initial kinetic energy of the fall through the elastic deformation of the spring.

[0008] The secondary buffer fishbone structure includes a pressure block, connecting bolts, and fishbone holes;

[0009] The pressure block is located inside the square tube sleeve and on the side of the baffle away from the spring, and is used to connect with the wire rope; the pressure block and the square tube sleeve are fixedly connected by connecting bolts; the fishbone holes are opened on the two opposite outer walls of the square tube sleeve, and are the same as the side walls through which the connecting bolts pass.

[0010] The fishbone hole is composed of several arc-shaped holes arranged in a way that protrudes away from the primary buffer spring structure; the connecting bolt is located on one side of the primary buffer spring structure in the fishbone hole.

[0011] Furthermore, the primary buffer spring structure includes a spring, a lug, a plug, a baffle, and a pin.

[0012] The plug is fixed to one end of the square tube sleeve; one end of the pin passes through the square tube sleeve and is connected to the baffle; the other end is located outside the square tube sleeve and is connected to the lifting lug; the baffle is movably connected inside the square tube sleeve; the spring is located inside the square tube sleeve and sleeved outside the pin, the spring is located between the baffle and the plug, and both ends of the spring abut against the baffle and the plug respectively;

[0013] Furthermore, the end of the pressure block away from the primary buffer spring structure is provided with a wire groove hole for connecting the wire rope, and the pressure block is connected with a locking bolt for adjusting the width of the wire groove hole.

[0014] Furthermore, the distance between two adjacent arc-shaped holes in the fishbone-shaped hole portion increases from the middle to both ends; the shortest distance between two arc-shaped holes is 2-4 mm.

[0015] Furthermore, a slot is provided on the outer wall of the square tube sleeve at the position corresponding to the spring. The slot extends along the spring's extension and contraction direction, and a tension force scale is provided on the outer side of the slot to display the tension force value of the buffer in real time.

[0016] The beneficial effects of this utility model are:

[0017] 1. This utility model adopts a dual-buffer design consisting of a primary buffer spring structure and a secondary buffer fishbone structure, breaking through the limitations of traditional single buffer structures. The primary buffer spring quickly converts the kinetic energy generated by the fall into elastic potential energy, initially absorbing the instantaneous impact force and reducing the initial impact intensity. Once the spring reaches its maximum compression stroke, the secondary buffer fishbone structure takes over the energy absorption. As the connecting bolt moves along the arc-shaped hole, the hole undergoes shear deformation and fracture, continuously absorbing the remaining kinetic energy, achieving gradual energy dissipation. The synergistic effect of the dual structures ensures sufficient energy absorption even in scenarios involving high fall heights or large worker weights, ensuring that the instantaneous impact force remains within the safe range tolerable for the human body, significantly improving the safety factor and effectively preventing fall injuries.

[0018] 2. This utility model abandons the complex hydraulic and pneumatic components of traditional buffers. The core structure consists of only simple components such as square tube sleeve, spring, pressure block, and fishbone hole, which reduces the need for high-precision machining and lowers manufacturing costs. The connection method of each component is simple, such as welding and fixing of plugs and double-threaded connection of pin shafts. No professional and complicated tools are required during installation. Later maintenance only requires checking key aspects such as spring elasticity and fishbone hole integrity, which reduces maintenance difficulty and cost.

[0019] 3. The pressure block has a groove hole for the wire rope and is equipped with a locking bolt. The groove width can be adjusted according to the diameter of the wire rope to achieve a stable connection of the wire rope. It is compatible with different specifications of lifeline systems and enhances versatility. The square tube sleeve has a groove with a tension force scale corresponding to the spring position. Before operation, the tension force value of the buffer can be observed in real time through the scale, which is convenient to adjust to the appropriate state in time, avoid the buffering effect due to abnormal tension force, and improve the controllability during use. 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 front view of the overall structure of the concealed square tube sleeve of this utility model.

[0022] Figure 3 This is a side view of the overall structure of the concealed square tube sleeve of this utility model.

[0023] In the diagram: 1. Square tube sleeve; 11. Groove; 2. Primary buffer spring structure; 21. Spring; 22. Lifting lug; 23. Plug; 24. Baffle; 25. Pin; 3. Secondary buffer herringbone structure; 31. Pressure block; 311. Wire groove hole; 32. Connecting bolt; 33. Herringbone hole; 331. Arc hole. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] This utility model discloses a lifeline energy buffer.

[0026] Reference Figures 1 to 3A lifeline energy buffer includes a square tube sleeve 1 and a primary buffer spring structure 2 and a secondary buffer fishbone structure 3 disposed within the square tube sleeve 1. The primary buffer spring structure 2 includes a spring 21, a lug 22, a plug 23, a baffle 24, and a pin 25. The plug 23 is welded and fixed to one end of the square tube sleeve 1. The pin 25 is a double-threaded pin 25, one end of which passes through the square tube sleeve 1 and is connected and fixed to the baffle 24; the other end is located outside the square tube sleeve 1 and is connected and fixed to the lug 22. The baffle 24 is movably connected inside the square tube sleeve 1. The spring 21 is located inside the square tube sleeve 1 and sleeved outside the pin 25. The spring 21 is located between the baffle 24 and the plug 23, and both ends of the spring 21 abut against the baffle 24 and the plug 23, respectively.

[0027] Reference Figures 1 to 3 The secondary buffer fishbone structure 3 includes a pressure block 31, a connecting bolt 32, and a fishbone hole 33. The pressure block 31 is located inside the square tube sleeve 1 and on the side of the baffle 24 away from the spring 21, for connection with the wire rope. The pressure block 31 and the square tube sleeve 1 are fixedly connected by the connecting bolt 32. The fishbone hole 33 is opened on two opposite outer walls of the square tube sleeve 1, and is the same as the connecting bolt 32 passing through the side wall of the square tube sleeve 1. The fishbone hole 33 is composed of several arc-shaped holes 331, and the arc-shaped holes 331 protrude in the direction away from the primary buffer spring structure 2. The connecting bolt 32 is located on the side of the primary buffer spring structure 2 of the fishbone hole 33. The distance between two adjacent arc-shaped holes 331 in the fishbone hole 33 increases from the middle to both ends. The shortest distance between two arc-shaped holes 331 is 2-4 mm.

[0028] Reference Figures 1 to 3 The pressure block 31 has a groove hole 311 for connecting the wire rope at one end away from the primary buffer spring structure 2. The pressure block 31 is connected to a locking bolt for adjusting the width of the groove hole 311. By tightening the locking bolt, the width of the groove hole 311 is reduced, thereby clamping and fixing the wire rope. The outer wall of the square tube sleeve 1 has a slot 11 at the position corresponding to the spring 21. The slot 11 extends along the extension and contraction direction of the spring 21. A tension force scale is provided on the outside of the slot 11 to display the tension force value of the buffer in real time.

[0029] The working principle of this utility model's lifeline energy buffer is as follows: When a worker falls, the safety belt pulls the steel wire rope, which drives the pressure block 31 through the wire groove hole 311. The pressure block 31, through the connecting bolt 32, drives the square tube sleeve 1 downward, at which time the baffle 24 compresses the spring 21. During the compression process, the spring 21 converts kinetic energy into elastic potential energy, and the instantaneous impact force is absorbed and converted. When the spring 21 is compressed to its maximum stroke, the connecting bolt 32 continues to move along the arc-shaped hole 331 of the fishbone hole 33. During this stage, the arc-shaped hole 331 of the fishbone hole 33 is subjected to shear force between the connecting bolts 32, deforms and breaks to absorb energy. Subsequently, the connecting bolt 32 breaks through into the arc-shaped hole 331 of the next layer, deforming and absorbing energy in sequence, until the kinetic energy is completely absorbed through the deformation of the arc-shaped hole 331 of the fishbone hole 33, and the worker stops falling.

[0030] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A lifeline energy buffer, characterized in that: It includes a square tube sleeve (1) and a primary buffer spring structure (2) and a secondary buffer fishbone structure (3) disposed inside the square tube sleeve (1); The primary buffer spring structure (2) achieves initial absorption and buffering of the initial kinetic energy of the fall through the elastic deformation of the spring (21); The secondary buffer fishbone structure (3) includes a pressure block (31), a connecting bolt (32), and a fishbone hole (33); The pressure block (31) is located inside the square tube sleeve (1) and is used to connect with the wire rope; the pressure block (31) and the square tube sleeve (1) are fixedly connected by connecting bolts (32); the fishbone hole (33) is opened on two opposite outer walls of the square tube sleeve (1) and is the same as the connecting bolts (32) passing through the side walls of the square tube sleeve (1); The fishbone hole (33) is composed of several arc-shaped holes (331) arranged together, and the arc-shaped holes (331) protrude in a direction away from the primary buffer spring structure (2); the connecting bolt (32) is located on one side of the primary buffer spring structure (2) of the fishbone hole (33).

2. A lifeline energy buffer according to claim 1, characterized in that: The primary buffer spring structure (2) includes a spring (21), a lug (22), a plug (23), a baffle (24), and a pin (25); The plug (23) is fixed to one end of the square tube sleeve (1); one end of the pin (25) passes through the square tube sleeve (1) and is connected to the baffle (24); the other end is located outside the square tube sleeve (1) and is connected to the lifting lug (22); the baffle (24) is movably connected inside the square tube sleeve (1); the spring (21) is located inside the square tube sleeve (1) and sleeved outside the pin (25), the spring (21) is located between the baffle (24) and the plug (23), and the two ends of the spring (21) abut against the baffle (24) and the plug (23) respectively.

3. A lifeline energy buffer according to claim 2, characterized in that: The pressure block (31) has a wire groove hole (311) for connecting the wire rope at one end away from the primary buffer spring structure (2), and the pressure block (31) is connected to a locking bolt for adjusting the width of the wire groove hole (311).

4. A lifeline energy buffer according to claim 3, characterized in that: The distance between two adjacent arc-shaped holes (331) in the fishbone hole portion (33) increases from the middle to both ends; the shortest distance between the two arc-shaped holes (331) is 2-4 mm.

5. A lifeline energy buffer according to claim 4, characterized in that: The outer wall of the square tube sleeve (1) is provided with a slot (11) at the position corresponding to the spring (21). The slot (11) extends along the extension and contraction direction of the spring (21). A tension force scale is provided on the outside of the slot (11) to display the tension force value of the buffer in real time.

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