A safety belt for working at heights

Abstract

The present invention provides a safety belt for working at height, which includes a load-bearing cable and a plurality of auxiliary cables arranged around the load-bearing cable, and also includes two cable collectors that respectively fix the two ends of the load-bearing cable and the auxiliary cables together, wherein the length of the auxiliary cable is greater than the length of the load-bearing cable; an airbag body is arranged in the auxiliary cable, and a gas generator for filling gas into the airbag body is also connected to the auxiliary cable, and a trigger assembly for triggering the gas generator is further included. In the present invention, a plurality of auxiliary cables each containing a plurality of independent airbag bodies are arranged around the load-bearing cable. When the impact on the load-bearing cable is too large, the airbag bodies in the auxiliary cables expand to form a plurality of balloon bodies around the load-bearing cable, thereby reducing the impact force and preventing the safety belt from completely breaking; the volume of the formed plurality of balloon bodies increases, and during the falling process, it can also collide with surrounding buildings and the like before the electrician, so as to avoid the electrician being injured due to collision with surrounding buildings.

Description

Technical Field

[0001] The present invention relates to the technical field of safety protection appliances, and particularly to a safety belt for high-altitude operations. Background Art

[0002] When an electrician performs high-altitude operations, a safety rope is generally required to prevent the electrician from falling and causing disability or death.

[0003] The safety ropes in the prior art generally include a wearable garment (woven from ropes) worn on the electrician, and a safety belt for connecting the wearable garment and a fixed pile (such as an electric pile). One end of the safety belt is fixed to the fixed pile and the other end is fixed to the wearable garment. When falling, the safety belt will hold the wearable garment together with the electrician to prevent a greater injury caused by falling to the ground.

[0004] When falling, the safety belt will bear a huge impact force and may be broken. If it is broken, disability or death cannot be avoided either. Therefore, it is necessary to improve the safety belt in the prior art. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a safety belt for high-altitude operations, which solves the problem that the safety belt in the prior art may be broken due to bearing a huge impact force (tensile force), resulting in disability or death of electricians.

[0006] According to an embodiment of the present invention, a safety belt for high-altitude operations includes a load-bearing cable, and a plurality of auxiliary cables disposed around the load-bearing cable. It also includes two cable collectors that respectively fix the two ends of the load-bearing cable and the auxiliary cables together. The length of the auxiliary cable is greater than that of the load-bearing cable. An airbag body is disposed inside the auxiliary cable, and a gas generator for filling gas into the airbag body is also connected to the auxiliary cable. It further includes a trigger assembly for triggering the gas generator.

[0007] In the above technical solution, the load-bearing cable directly bears the tensile force. When the tensile force is too large and exceeds its bearing capacity, the auxiliary cable will be subjected to an impact force, thereby triggering the gas generator to generate gas. After the gas is filled into the airbag body, the airbag body is inflated, causing the volume of the airbag body to increase. Since a plurality of auxiliary cables surround the load-bearing cable, a device similar to a balloon can be formed, thereby reducing the impact force generated by falling.

[0008] Further, the auxiliary cable includes a plurality of connecting segments connected to each other, and the airbag body is disposed inside each connecting segment. The two ends of each connecting segment are respectively fixedly connected with a first connector and a second connector, and the first connector and the second connector between adjacent connecting segments are threadedly connected. The gas generator is sleeved outside the connecting segment, and a communication channel in a closed state is provided between the two.

[0009] Further, the first connector includes a first connecting cylinder fixedly connected to one end of the connecting section, and a connecting rod is threadedly connected to the end of the first connecting cylinder away from the connecting section;

[0010] The second connector includes a second connecting cylinder fixedly connected to the end of the connecting section away from the first connecting cylinder, and the end of the connecting rod away from the first connecting cylinder is threadedly connected to the second connecting cylinder.

[0011] Further, a first installation groove is recessed on the connecting rod. The triggering assembly includes a clamping column slidably arranged in the first installation groove, and a second installation groove capable of allowing the clamping column to be clamped is recessed on the inner wall of the first connecting cylinder. The triggering assembly further includes a pressure sensor arranged in the second installation groove, and a wire with an electrical connection is arranged between the pressure sensor and the gas generator; wherein the first installation groove and the second installation groove are in the same plane and are staggered. When the clamping column slides from the first installation groove into the second installation groove, the pressure sensor is triggered, and the wire transmits the pressure signal generated by the triggering of the pressure sensor to the gas generator, thereby triggering the gas generator to fill the airbag body with gas.

[0012] Further, a spring is further arranged in the first installation groove, with one end fixedly connected to its bottom and the other end fixedly connected to the clamping column.

[0013] Further, the cable collector is fixedly connected to the end of the load-bearing cable, and a plurality of threaded holes arranged around the load-bearing cable are formed on the cable collector. Both ends of the connecting section can be threadedly connected to the threaded holes, and the first connecting cylinder and the second connecting cylinder are respectively embedded in the two end faces of the connecting section.

[0014] Further, a plurality of connecting cables are further included, with both ends respectively connected to the load-bearing cable and the auxiliary cable.

[0015] Further, the connecting section includes a braided mesh layer wrapped around the airbag body, and the connecting cable is fixedly connected to the braided mesh layer.

[0016] Further, the airbag body includes a cylindrical outer layer, and a plurality of support rods are arranged therein.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] A plurality of auxiliary cables each containing a plurality of independent airbag bodies are arranged around the load-bearing cable. When the load-bearing cable is impacted too greatly, the airbag bodies in the auxiliary cables expand, forming a plurality of balloon bodies around the load-bearing cable, thereby achieving the effect of reducing the impact force to prevent the safety belt from completely breaking;

[0019] The formed multiple balloon bodies increase in volume and can hit the surrounding buildings and the like before the electrician during the falling process, achieving the purpose of preventing the electrician from being injured by hitting the surrounding buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention;

[0021] Figure 2 Schematic diagram of the internal structure of the connecting section of an embodiment of the present invention;

[0022] Figure 3 Schematic diagram of the internal structure of the first connector of an embodiment of the present invention;

[0023] Figure 4 Schematic diagram of the internal structure of the second connector of an embodiment of the present invention;

[0024] Figure 5 Schematic diagram of the structure of the cable collector of an embodiment of the present invention;

[0025] In the above-mentioned drawings:

[0026] 1, load-bearing cable; 2, auxiliary cable; 3, cable collector; 4, airbag body; 5, gas generator; 6, outer layer; 7, support rod; 8, first connector; 9, second connector; 10, connecting cable; 11, braided mesh layer; 12, first connecting cylinder; 13, connecting rod; 14, second connecting cylinder; 15, clamping column; 16, second installation groove; 17, pressure sensor; 18, wire; 19, spring; 20, threaded hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The technical solutions in the present invention will be further described below with reference to the drawings and embodiments.

[0028] As shown in Figure 1 、 2 、3, 4, this embodiment provides a safety belt for working at height, which includes a load-bearing cable 1 and a plurality of auxiliary cables 2 arranged around the load-bearing cable 1, and also includes two cable collectors 3 that respectively fix the two ends of the load-bearing cable 1 and the auxiliary cables 2 together, wherein the length of the auxiliary cable 2 is greater than the length of the load-bearing cable 1; an airbag body 4 is arranged in the auxiliary cable 2, and a gas generator 5 for filling gas into the airbag body 4 is also connected to the auxiliary cable 2, and a triggering assembly for triggering the gas generator 5 is further included; wherein the airbag body 4 includes a cylindrical outer layer 6, and a plurality of support rods 7 (the support rods 7 are columns made of elastic materials and are used to increase the mechanical bearing capacity of the auxiliary cable 2) are arranged therein, and the outer layer 6 is made of high-elastic silicone material and can expand after being filled with gas.

[0029] In the above embodiments, the load-bearing cable 1 directly bears the tensile force. When the tensile force is too large and exceeds its bearing capacity, the auxiliary cable 2 will be subjected to an impact force, thereby triggering the gas generator 5 to generate gas. After the gas is filled into the airbag body 4, the airbag body 4 is inflated, causing the volume of the airbag body 4 to increase. A plurality of auxiliary cables 2 surround the load-bearing cable 1, so a device similar to a balloon can be formed, thereby reducing the impact force generated by falling.

[0030] As Figure 1 、 2 shown, preferably, the auxiliary cable 2 includes a plurality of connecting segments connected to each other, and the airbag body 4 is arranged in each connecting segment; the two ends of the connecting segment are respectively fixedly connected with a first connector 8 and a second connector 9, and the first connector 8 and the second connector 9 between adjacent two connecting segments are threadedly connected; the gas generator 5 is sleeved outside the connecting segment, and a connecting channel in a closed state is arranged between the two.

[0031] After the gas generator 5 is triggered, the generated gas flushes open the connecting channel (which is provided with an elastic diaphragm (such as a silica gel film) that can be broken by high-pressure gas when subjected to gas impact, thereby flushing open the connecting channel) and enters the airbag body 4; the first connector 8 and the second connector 9 are threadedly connected, that is, combined into the auxiliary cable 2. When subjected to an impact, a plurality of balloon bodies are generated, so as to increase the reaction force (mainly the buoyancy force generated by the balloon bodies) and offset the impact force.

[0032] As Figure 1 、 2 、4 shown, preferably, the seat belt further includes a plurality of connecting cables 10 whose two ends are respectively connected to the load-bearing cable 1 and the auxiliary cable 2. The connecting cable 10 is short in length and is used to shorten the distance between the auxiliary cable 2 and the load-bearing cable 1 to prevent them from being too loose from each other;

[0033] In particular, the length of the auxiliary cable 2 is 1.2 to 1.4 times the length of the load-bearing cable 1. When the load-bearing cable 1 is stretched to be about to break, the connecting cable 10 is tensioned by the tensile force of the load-bearing cable 1 over time, thereby triggering the triggering component.

[0034] As Figure 2 、 4 shown, preferably, the connecting segment includes a woven mesh layer 11 wrapped outside the airbag body 4, and the connecting cable 10 is fixedly connected to the woven mesh layer 11. The woven mesh layer 11 is used to protect the airbag body 4 from accidental triggering. At the same time, the woven mesh layer 11 is also woven with elastic ropes to avoid restricting the volume expansion of the airbag body 4 and enable the airbag body 4 to expand more regularly to form a balloon body similar to a tube.

[0035] As Figure 1 、 3, as shown in FIG. 4, preferably, the first connector 8 includes a first connecting cylinder 12 fixedly connected to one end of the connecting section, and a connecting rod 13 is threadedly connected to the end of the first connecting cylinder 12 away from the connecting section;

[0036] The second connector 9 includes a second connecting cylinder 14 fixedly connected to the end of the connecting section away from the first connecting cylinder 12, and the end of the connecting rod 13 away from the first connecting cylinder 12 is threadedly connected to the second connecting cylinder 14. The adjacent connecting sections are connected by the connecting rod 13 to form the secondary cable 2.

[0037] As Figure 2 , 3 shown, preferably, a first installation groove is recessed in the connecting rod 13. The trigger assembly includes a clamping post 15 slidably disposed in the first installation groove (the clamping post 15 slides up and down in the first installation groove), and a second installation groove 16 capable of being clamped by the clamping post 15 is recessed in the inner wall of the first connecting cylinder 12. The trigger assembly further includes a pressure sensor 17 disposed in the second installation groove 16, and a wire 18 with an electrical connection is provided between the pressure sensor 17 and the gas generator 5; under normal circumstances, the first installation groove is located at the bottom of the first connecting cylinder 12, and the second installation groove 16 is located at the end of the first connecting cylinder 12 close to the outlet. When subjected to a tensile force, the connecting rod 13 is pulled out of the first installation cylinder, so that the clamping post 15 can approach the second installation groove 16 and be clamped therein. After the clamping post 15 is clamped into the second installation groove 16, it contacts the pressure sensor 17 to trigger the pressure sensor 17;

[0038] To ensure that the clamping post 15 can smoothly trigger the pressure sensor 17, the first installation groove and the second installation groove 16 are in the same plane and are staggered. When the clamping post 15 slides from the first installation groove into the second installation groove 16, the pressure sensor 17 is triggered. The wire 18 transmits the pressure signal generated by the trigger of the pressure sensor 17 to the gas generator 5, thereby triggering the gas generator 5 to fill the airbag body 4 with gas.

[0039] As Figure 3 shown, preferably, a spring 19 is further disposed in the first installation groove, with one end fixedly connected to its bottom and the other end fixedly connected to the clamping post 15. The provided spring 19 can assist the clamping post 15 to be more quickly clamped into the second installation groove 16. In particular, after the clamping post 15 is clamped into the second installation groove 16, its two ends are respectively located in the first installation groove and the second installation groove 16 to prevent the connecting section from breaking.

[0040] As Figure 1 , 5As shown, preferably, the cable collector 3 is fixedly connected to the end of the load-bearing cable 1, and a number of threaded holes 20 are provided on the cable collector 3 around the load-bearing cable 1. Both ends of the connecting section can be threadedly connected to the threaded holes 20, and the first connecting cylinder 12 and the second connecting cylinder 14 are respectively embedded in the two end faces of the connecting section. Among them, the provided threaded holes 20 are through holes and have a relatively deep depth. The provided connecting rod 13 can be completely inserted without interfering with the threaded connection between the connecting section and the threaded holes 20. At the same time, both ends of the cable collector 3 can be connected to the load-bearing cable 1 and the auxiliary cable 2, so that the safety belt can be lengthened.

[0041] Compared with the prior art, the safety belt provided by this embodiment has the following beneficial effects:

[0042] A number of auxiliary cables 2 containing multiple independent airbag bodies 4 are arranged around the load-bearing cable 1. When the impact on the load-bearing cable 1 is too large, the airbag bodies 4 in the auxiliary cable 2 expand to form a number of balloon bodies around the load-bearing cable 1, so as to reduce the impact force and prevent the safety belt from completely breaking; the volume of the formed balloon bodies increases, and during the falling process, it can also collide with surrounding buildings and the like before the electrician, so as to avoid the electrician being injured due to collision with surrounding buildings; the safety belt can also be lengthened according to specific situations; even when the load-bearing cable 1 breaks, multiple auxiliary cables 2 will not break immediately, but form a protection device similar to a parachute to reduce the harm to the electrician. Even if part of the auxiliary cable 2 breaks, the remaining airbag bodies 4 can also play a certain buffering role, thereby reducing the impact force on the electrician.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. An aerial work safety belt, characterized in that, It includes a load-bearing cable and several auxiliary cables arranged around the load-bearing cable, and also includes two cable collectors that respectively fix the two ends of the load-bearing cable and the auxiliary cables together. The length of the auxiliary cable is greater than that of the load-bearing cable. An airbag body is arranged inside the auxiliary cable, and a gas generator for filling gas into the airbag body is also connected to the auxiliary cable. It also includes a trigger assembly for triggering the gas generator. The auxiliary cable includes several connected connection segments, and an airbag body is arranged in each connection segment. The two ends of the connection segment are respectively fixedly connected with a first connector and a second connector, and the first connector and the second connector between adjacent two connection segments are threadedly connected. The gas generator is sleeved outside the connection segment, and a closed communication channel is arranged between the two. It also includes several connecting cables with two ends respectively connected to the load-bearing cable and the auxiliary cable. The connection segment includes a woven mesh layer wrapped outside the airbag body, and the connecting cable is fixedly connected with the woven mesh layer. The woven mesh layer is woven with elastic ropes. The airbag body includes a cylindrical outer layer, and several support rods are arranged therein. The support rods are columns made of elastic materials, and the outer layer is made of high-elastic silicone materials.

2. The aerial work safety belt according to claim 1, characterized in that, The first connector includes a first connection cylinder fixedly connected to one end of the connection segment, and a connecting rod is threadedly connected to the end of the first connection cylinder away from the connection segment. The second connector includes a second connection cylinder fixedly connected to the end of the connection segment away from the first connection cylinder, and the end of the connecting rod away from the first connection cylinder is threadedly connected to the second connection cylinder.

3. The aerial work safety belt according to claim 2, characterized in that, A first installation groove is recessed on the connecting rod. The trigger assembly includes a clamping column slidably arranged in the first installation groove, and a second installation groove for the clamping column to be clamped into is recessed on the inner wall of the first connection cylinder. The trigger assembly also includes a pressure sensor arranged in the second installation groove, and a wire with an electrical connection is arranged between the pressure sensor and the gas generator. The first installation groove and the second installation groove are in the same plane and are staggered. When the clamping column slides from the first installation groove into the second installation groove, the pressure sensor is triggered, and the wire transmits the pressure signal generated by the trigger of the pressure sensor to the gas generator, thereby triggering the gas generator to fill the airbag body with gas.

4. The aerial work safety belt according to claim 3, characterized in that, A spring with one end fixedly connected to its bottom and the other end fixedly connected to the clamping column is also arranged in the first installation groove.

5. The aerial work safety belt according to any one of claims 2 to 4, characterized in that, The cable collector is fixedly connected to the end of the load-bearing cable, and several threaded holes arranged around the load-bearing cable are formed on the cable collector. Both ends of the connection segment can be threadedly connected to the threaded holes, and the first connection cylinder and the second connection cylinder are respectively embedded in the two end faces of the connection segment.

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