A safety auxiliary device for high-altitude bridge welding

Abstract

The invention discloses a safety auxiliary device for high-altitude bridge welding, which belongs to the field of bridge welding safety. The safety auxiliary device for high-altitude bridge welding, through the setting of a double-layer magnetic rope, on the one hand, when an accident occurs, the compressed air in the gas cylinder is released to make the gas net spacer rope deflated. At this time, two adjacent inner magnetic rods are close to each other and adsorbed to form a whole, thereby significantly reducing the overall flexibility of the two-state variable rope. Compared with the prior art, the range of shaking with the safety rope when stepping on air is significantly reduced, thereby effectively avoiding the situation where high-altitude workers hit the bridge, and effectively reducing safety hazards. On the other hand, the gas net spacer rope can form a rope body that can bear longitudinal force inside the outer nylon rope. Compared with the prior art, the strength of the two-state variable rope is significantly improved. When the two-state variable rope is accidentally damaged or broken, the gas support mesh tube can play an auxiliary pulling role inside, thereby providing a safety line for high-altitude workers who step on air.

Description

Technical Field

[0001] The invention relates to the field of bridge welding safety, and more specifically to a safety auxiliary device for high-altitude bridge welding. Background Art

[0002] When welding high-altitude bridges, for safety reasons, it is generally mandatory to use a safety rope. The function of the safety rope is generally to prevent accidental stepping on air and falling. However, in actual use, when someone accidentally steps on air, the flexibility of the safety rope may cause it to swing or sway at high altitudes, causing the worker who accidentally steps on air to hit the bridge, posing a major safety hazard. Summary of the invention

[0003] 1. Technical problems to be solved

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide a safety auxiliary device for high-altitude bridge welding. It uses the setting of a double-layer magnetic rope. On the one hand, when an accident occurs, the high-altitude workers release the compressed air in the gas cylinder to make the air net rope deflated. At this time, the two adjacent inner magnetic rods are close to each other and adsorbed to form a whole, thereby significantly reducing the overall flexibility of the two-state variable rope. Compared with the prior art, the range of shaking with the safety rope when stepping on air is significantly reduced, thereby effectively avoiding the situation where the high-altitude workers hit the bridge, effectively reducing safety hazards. On the other hand, the air net rope can form a rope body that can bear longitudinal force inside the outer nylon rope. Compared with the prior art, the strength of the two-state variable rope is significantly improved. When the two-state variable rope is accidentally damaged or broken, the air support mesh tube inside can play an auxiliary pulling role, thereby providing a safety line for high-altitude workers who step on air.

[0005] 2. Technical solution

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A safety auxiliary device for high-altitude bridge welding, comprising a wearing end and a double-layer magnetic rope connected to the wearing end and a hook connected to the end of the double-layer magnetic rope away from the wearing end, the double-layer magnetic rope comprising two bolting ends respectively connected to the wearing end and the hook and a two-state variable rope connected between the two bolting ends, a gas cylinder with a threaded plug is fastened at the connection between the wearing end and the bolting end, the gas cylinder is fixedly connected to the end of the bolting end, the two-state variable rope comprises an outer nylon rope and a plurality of inner magnetic rods wrapped in the outer nylon rope, two adjacent inner magnetic rods attract each other, the plurality of inner magnetic rods are wrapped with an air net separator rope, an air pipe is embedded in the bolting end connected to the wearing end, the two ends of the air pipe are respectively connected to the gas cylinder and the air net separator rope, and the double-layer magnetic rope is used to connect the two ends of the air pipe. The setting, on the one hand, when an accident occurs, the aerial workers release the compressed air in the gas cylinder to make the gas net rope deflated. At this time, the two adjacent inner magnetic rods are close to each other and adsorbed to form a whole, thereby significantly reducing the overall flexibility of the two-state variable rope. Compared with the existing technology, the range of shaking with the safety rope when stepping on air is significantly reduced, thereby effectively avoiding the situation where aerial workers hit the bridge, effectively reducing safety hazards. On the other hand, the gas net rope can form a rope body that can bear longitudinal force inside the outer nylon rope. Compared with the existing technology, the strength of the two-state variable rope is significantly improved. When the two-state variable rope is accidentally damaged or broken, the gas support net tube inside can play an auxiliary pulling role, thereby providing a safety line for aerial workers who step on air.

[0008] Furthermore, the air net spacer rope is filled with air through a gas cylinder, and the air is in a compressed state.

[0009] Furthermore, the air mesh separation rope is in an expanded state, and the air compression multiple is 2-3 times, so that the air mesh separation rope can effectively isolate two adjacent inner magnetic rods so that the two do not contact each other. At this time, the multiple hard inner magnetic rods are separate individuals from each other, so that the inner magnetic rods are not likely to have a significant impact on the overall flexibility of the two-state variable rope, and are not likely to affect the normal use of the two-state variable rope.

[0010] Furthermore, the outer nylon rope is a hollow tubular structure woven from nylon ropes, and the inner magnetic rod is made of a hard material. When an accident occurs, the aerial workers unscrew the threaded plug on the gas cylinder to release the compressed air. At this time, the two adjacent inner magnetic rods are close to each other and adsorbed, so that the multiple inner magnetic rods are integrated, thereby significantly reducing the overall flexibility of the two-state variable rope. Compared with the existing technology, the range of shaking with the safety rope when stepping on air is significantly reduced, thereby effectively avoiding the occurrence of aerial workers hitting the bridge, and effectively reducing safety hazards.

[0011] Furthermore, the air mesh rope includes a plurality of pneumatic bags respectively located at the ends of the inner magnetic rods and an air-supported mesh tube connected between two adjacent pneumatic bags. The air-supported mesh tube is woven from a plurality of hollow ropes interwoven with each other, and the pneumatic bags and the hollow ropes are interconnected. The air mesh rope can form a rope body that can bear longitudinal force inside the outer nylon rope. Compared with the existing technology, the strength of the two-state variable rope is significantly improved. When the two-state variable rope is accidentally damaged or broken, the air-supported mesh tube can play an auxiliary pulling role inside, thereby providing a safety line for high-altitude workers who step on air.

[0012] Furthermore, the pneumatic septa and the hollow rope are both made of flexible sealing materials, and the number of the pneumatic septa is one more than the number of the internal magnetic rods. The two pneumatic septa at the outermost edges are respectively fixedly connected to the two bolted ends, so that there is a pneumatic septum at the end of the two internal magnetic rods at the outermost edges close to the bolted ends, which facilitates the communication between the pneumatic septum and the trachea in the bolted ends.

[0013] Furthermore, a magnetic storage cavity is bored inside the inner magnetic rod, and magnetic fluid is filled inside the magnetic storage cavity. The upper and lower ends of the inner magnetic rod are fixedly connected with force-reducing variable ends, the magnetic storage cavity is communicated with the two force-reducing variable ends, a groove is bored on the inner wall of the force-reducing variable end, and ferromagnetic mixed powder is filled inside the groove. A limited spacing net is fixedly connected at the notch of the groove. During normal use, the pneumatic partition bag is in an expanded state, pushing the force-reducing variable ends on the two adjacent inner magnetic rods to move toward the inner magnetic rods, so that the magnetic fluid and the ferromagnetic mixed powder inside one inner magnetic rod are away from the other inner magnetic rod, thereby effectively reducing the attraction between the two adjacent inner magnetic rods, effectively ensuring that the multiple inner magnetic rods exist as separate individuals, and reducing the impact on the flexibility of the dual-state variable rope. When an accident occurs, after the air in the air support network tube is released, the magnetic fluid and the ferromagnetic mixed powder in the two adjacent inner magnetic rods approach each other, so that the multiple inner magnetic rods are adsorbed on each other, thereby being connected as a whole, thereby reducing the flexibility of the dual-state variable rope.

[0014] Furthermore, the particle size of the ferromagnetic mixed powder is larger than the aperture of the limiting screen, so that the ferromagnetic mixed powder is not easy to seep out of the limiting screen, and the mixed volume ratio of iron powder and magnetic powder in the ferromagnetic mixed powder is 1:1.5-2.

[0015] Furthermore, the filling degree of the magnetic fluid in the magnetic storage cavity is 85-90%. Under the action of gravity, the magnetic fluid can penetrate into the groove below, so that the ferromagnetic mixed powder inside it maintains good magnetic properties. At the same time, when the pneumatic septum is in an expanded state, the two force-reducing variable ends are deformed toward the inner magnetic rod. On the one hand, the force-reducing variable end below pushes the magnetic fluid to raise its liquid level. On the other hand, the other force-reducing variable end pushes the ferromagnetic mixed powder to move toward the magnetic fluid liquid surface. The filling amount of 85-90% effectively ensures that the magnetic fluid can be immersed in the ferromagnetic mixed powder above.

[0016] Furthermore, the force-reducing variable end is made of elastic material, and the lower end of the force-reducing variable end is a curved surface structure, so that it is not easy to cause excessive local force when it contacts the pneumatic diaphragm.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] (1) This scheme adopts the setting of double-layer magnetic rope. On the one hand, when an accident occurs, the high-altitude workers release the compressed air in the gas cylinder to make the air net rope deflated. At this time, the two adjacent inner magnetic rods are close to each other and adsorbed to form a whole, thereby significantly reducing the overall flexibility of the two-state variable rope. Compared with the existing technology, the range of swaying with the safety rope when stepping on air is significantly reduced, thereby effectively avoiding the high-altitude workers from colliding with the bridge, effectively reducing safety hazards. On the other hand, the air net rope can form a rope body that can bear longitudinal force inside the outer nylon rope. Compared with the existing technology, the strength of the two-state variable rope is significantly improved. When the two-state variable rope is accidentally damaged or broken, the air support net tube inside can play an auxiliary pulling role, thereby providing a safety line for high-altitude workers who step on air.

[0020] (2) The air mesh rope is filled with air through a gas cylinder, and the air is in a compressed state. The air mesh rope is in an expanded state, and the air compression multiple is 2-3 times, so that the air mesh rope can effectively isolate two adjacent inner magnetic rods from contacting each other. At this time, the multiple hard inner magnetic rods are separate individuals, so that the inner magnetic rods are not likely to have a significant impact on the overall flexibility of the dual-state variable rope, and are not likely to affect the normal use of the dual-state variable rope.

[0021] (3) The outer nylon rope is a hollow tubular structure woven from nylon ropes, and the inner magnetic rod is made of a hard material. When an accident occurs, the aerial workers unscrew the threaded plug on the gas cylinder to release the compressed air. At this time, the two adjacent inner magnetic rods are close to each other and adsorbed, so that the multiple inner magnetic rods are integrated, thereby significantly reducing the overall flexibility of the two-state variable rope. Compared with the existing technology, the range of shaking with the safety rope when stepping on air is significantly reduced, thereby effectively avoiding the occurrence of aerial workers hitting the bridge, effectively reducing safety hazards.

[0022] (4) The air net rope includes a plurality of pneumatic baffles respectively located at the ends of the inner magnetic rod and an air-supported net tube connected between two adjacent pneumatic baffles. The air-supported net tube is woven from a plurality of hollow ropes interwoven with each other, and the pneumatic baffles and the hollow ropes are interconnected. The air net rope can form a rope body that can bear longitudinal force inside the outer nylon rope. Compared with the existing technology, the strength of the two-state variable rope is significantly improved. When the two-state variable rope is accidentally damaged or broken, the air-supported net tube can play an auxiliary pulling role inside, thereby providing a safety line for high-altitude workers who step on air.

[0023] (5) The pneumatic septa and the hollow rope are both made of flexible sealing materials, and the number of the pneumatic septa is one more than the number of the internal magnetic rods. The two pneumatic septa at the outermost edges are respectively fixedly connected to the two bolted ends, so that there is a pneumatic septum at the end of the two internal magnetic rods at the outermost edges close to the bolted ends, which facilitates the communication between the pneumatic septa and the air tube in the bolted end.

[0024] (6) A magnetic storage cavity is excavated inside the inner magnetic rod, and the magnetic storage cavity is filled with magnetic fluid. The upper and lower ends of the inner magnetic rod are fixedly connected with force-reducing variable ends. The magnetic storage cavity is connected to the two force-reducing variable ends. A groove is excavated on the inner wall of the force-reducing variable end, and the groove is filled with ferromagnetic mixed powder. A limited spacing net is fixedly connected at the notch of the groove. During normal use, the pneumatic sac is in an expanded state, pushing the force-reducing variable ends on the two adjacent inner magnetic rods toward the inner magnetic rods, so that the magnetic fluid and ferromagnetic mixed powder in one inner magnetic rod are away from the other inner magnetic rod, thereby effectively reducing the attraction between the two adjacent inner magnetic rods, effectively ensuring that the multiple inner magnetic rods exist as separate individuals, and reducing the impact on the flexibility of the dual-state variable rope. When an accident occurs, after the air in the air support net is released, the magnetic fluid and ferromagnetic mixed powder in the two adjacent inner magnetic rods are close to each other, so that the multiple inner magnetic rods are adsorbed on each other, thus connecting as a whole, thereby reducing the flexibility of the dual-state variable rope.

[0025] (7) The particle size of the ferromagnetic mixed powder is larger than the aperture of the limiting screen, so that the ferromagnetic mixed powder is not easy to seep out of the limiting screen, and the mixed volume ratio of iron powder and magnetic powder in the ferromagnetic mixed powder is 1:1.5-2.

[0026] (8) The filling degree of the magnetic fluid in the magnetic storage chamber is 85-90%. Under the action of gravity, the magnetic fluid can penetrate into the groove below, so that the ferromagnetic mixed powder inside it maintains good magnetic properties. At the same time, when the pneumatic septum is in an expanded state, the two force-reducing variable ends are deformed toward the inner magnetic rod. On the one hand, the lower force-reducing variable end pushes the magnetic fluid to raise its liquid level. On the other hand, the other force-reducing variable end pushes the ferromagnetic mixed powder toward the magnetic fluid liquid surface. The 85-90% filling amount effectively ensures that the magnetic fluid can be immersed in the ferromagnetic mixed powder above.

[0027] (9) The force-reducing variable end is made of elastic material, and the lower end of the force-reducing variable end is a curved surface structure, so that it is not easy to cause excessive local force when it contacts the pneumatic diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0029] Figure 2 It is a structural schematic diagram of a partial cross section of a double-layer magnetic rope of the present invention;

[0030] Figure 3It is a three-dimensional structural schematic diagram of the air support mesh pipe part of the present invention;

[0031] Figure 4 It is a structural schematic diagram of the end portion of the inner magnetic rod of the present invention;

[0032] Figure 5 It is a partial structural schematic diagram of the pneumatic septum of the present invention when it is in an expanded state so that the two inner magnetic rods are away from each other.

[0033] Description of the numbers in the figure:

[0034] 1 wearing end, 2 bolt connection end, 3 hook, 4 two-state variable rope, 41 outer nylon rope, 42 inner magnetic rod, 51 pneumatic spacer, 52 hollow rope, 6 gas cylinder, 7 magnetic storage cavity, 8 force reduction variable end, 9 groove, 10 limit spacer. DETAILED DESCRIPTION

[0035] The following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Embodiment 1:

[0039] See also Figure 1-2A safety auxiliary device for high-altitude bridge welding, comprising a wearing end 1, a double-layer magnetic rope connected to the wearing end 1, and a hook 3 connected to the end of the double-layer magnetic rope away from the wearing end 1, the double-layer magnetic rope comprises two bolting ends 2 respectively connected to the wearing end 1 and the hook 3, and a two-state variable rope 4 connected between the two bolting ends 2, a gas cylinder 6 with a threaded plug is fastened at the connection between the wearing end 1 and the bolting end 2, the gas cylinder 6 is fixedly connected to the end of the bolting end 2, the two-state variable rope 4 comprises an outer nylon rope 41 and a plurality of inner magnetic rods 42 wrapped in the outer nylon rope 41, the outer nylon rope 41 is a hollow tubular structure woven from nylon ropes, and the inner magnetic rods 42 are made of hard materials, When an accident occurs, the aerial worker unscrews the threaded plug on the gas cylinder 6 to release the compressed air. At this time, the two adjacent inner magnetic rods 42 are close to each other and adsorbed, so that the multiple inner magnetic rods 42 form a whole, thereby significantly reducing the overall flexibility of the two-state variable rope 4. Compared with the existing technology, the range of shaking with the safety rope when stepping on air is significantly reduced, thereby effectively avoiding the situation where the aerial worker hits the bridge, effectively reducing safety hazards, and the two adjacent inner magnetic rods 42 attract each other. The multiple inner magnetic rods 42 are wrapped with an air mesh partition rope, and an air pipe is embedded in the bolted end 2 connected to the wearing end 1. The two ends of the air pipe are respectively connected to the gas cylinder 6 and the air mesh partition rope.

[0040] See also Figure 2-3 The air mesh rope includes a plurality of pneumatic spacer bags 51 respectively located at the ends of the inner magnetic rods 42 and an air support mesh tube connected between two adjacent pneumatic spacer bags 51. The air support mesh tube is woven from a plurality of hollow ropes 52 interwoven with each other, and the pneumatic spacer bags 51 are interconnected with the hollow ropes 52. The air mesh rope is filled with air through the gas cylinder 6, and the air is in a compressed state. The air mesh rope is in an expanded state, and the air compression multiple is 2-3 times, so that the air mesh rope effectively isolates two adjacent inner magnetic rods 42 so that the two do not contact each other. At this time, the multiple hard inner magnetic rods 42 are separate individuals from each other, so that the inner magnetic rods 42 are not likely to have a significant impact on the overall flexibility of the dual-state variable rope 4, so that it is not likely to affect the normal use of the dual-state variable rope 4. In addition, the air mesh spacer rope can form a rope body that can bear longitudinal force inside the outer nylon rope 41. Compared with the existing technology, the strength of the two-state variable rope 4 is significantly improved. When the two-state variable rope 4 is accidentally damaged or broken, the air support mesh tube inside can play an auxiliary pulling role, thereby providing a safety line for high-altitude workers who step on air. The pneumatic spacers 51 and the hollow rope 52 are both made of flexible sealing materials, and the number of pneumatic spacers 51 is one more than the number of internal magnetic rods 42. The two pneumatic spacers 51 at the edge are respectively fixedly connected to the two bolted ends 2, so that there is a pneumatic spacer 51 at the end of the two inner magnetic rods 42 at the edge close to the bolted end 2, which facilitates the pneumatic spacer 51 to communicate with the air pipe in the bolted end 2.

[0041] See also Figure 4-5A magnetic storage cavity 7 is excavated inside the inner magnetic rod 42, and the magnetic storage cavity 7 is filled with magnetic fluid. The filling degree of the magnetic fluid in the magnetic storage cavity 7 is 85-90%. Under the action of gravity, the magnetic fluid can penetrate into the groove 9 below, so that the ferromagnetic mixed powder inside it maintains good magnetic properties. At the same time, when the pneumatic septum 51 is in an expanded state, the two force-reducing variable ends 8 are deformed toward the inner magnetic rod 42. On the one hand, the force-reducing variable end 8 below pushes the magnetic fluid to raise its liquid level, and on the other hand, the other force-reducing variable end 8 The force changing end 8 pushes the ferromagnetic mixed powder to move toward the surface of the magnetic fluid. The filling amount of 85-90% effectively ensures that the magnetic fluid can be immersed in the ferromagnetic mixed powder above. The upper and lower ends of the inner magnetic rod 42 are fixedly connected with the force reducing changing end 8. The force reducing changing end 8 is made of elastic material, and the lower end of the force reducing changing end 8 is a curved surface structure, so that it is not easy to cause excessive local force when it contacts the pneumatic septum 51. The magnetic storage cavity 7 is connected to the two force reducing changing ends 8, and the inner wall of the force reducing changing end 8 is cut with The groove 9 is filled with ferromagnetic mixed powder, and the mixed volume ratio of iron powder and magnetic powder in the ferromagnetic mixed powder is 1:1.5-2. The limited spacing net 10 is fixedly connected at the notch of the groove 9. The particle size of the ferromagnetic mixed powder is larger than the aperture of the limited spacing net 10, so that the ferromagnetic mixed powder is not easy to seep out of the limited spacing net 10. During normal use, the pneumatic capsule 51 is in an expanded state, pushing the force-reducing variable end 8 on the two adjacent inner magnetic rods 42 to move toward the inner magnetic rods 42, so that the magnetic fluid and the ferromagnetic mixed powder in one inner magnetic rod 42 are away from the other inner magnetic rod 42, thereby effectively reducing the attraction between the two adjacent inner magnetic rods 42, effectively ensuring that the multiple inner magnetic rods 42 exist as separate individuals, reducing the impact on the flexibility of the two-state variable rope 4, and when an accident occurs, after the air in the air support net tube is released, the magnetic fluid and the ferromagnetic mixed powder in the two adjacent inner magnetic rods 42 are close to each other, so that the multiple inner magnetic rods 42 are adsorbed on each other, thereby being connected as a whole, thereby reducing the flexibility of the two-state variable rope 4.

[0042] Through the setting of double-layer magnetic rope, on the one hand, when an accident occurs, the aerial workers release the compressed air in the gas cylinder 6 to make the air net rope deflated. At this time, the two adjacent inner magnetic rods 42 are close to each other and adsorbed to form a whole, thereby significantly reducing the overall flexibility of the two-state variable rope 4. Compared with the existing technology, the range of shaking with the safety rope when stepping on air is significantly reduced, thereby effectively avoiding the situation where the aerial workers hit the bridge, effectively reducing the safety hazard. On the other hand, the air net rope can form a rope body that can bear longitudinal force inside the outer nylon rope 41. Compared with the existing technology, the strength of the two-state variable rope 4 is significantly improved. When the two-state variable rope 4 is accidentally damaged or broken, the air support net tube inside can play an auxiliary pulling role, thereby providing a safety line for the aerial workers who step on air.

[0043] The above is only a preferred specific implementation manner of the present invention; but the protection scope of the present invention is not limited thereto; any technician familiar with the technical field within the technical scope disclosed by the present invention; any equivalent replacement or change based on the technical solution and improved concept of the present invention shall be covered by the protection scope of the present invention.

Claims

1. A safety auxiliary device for high-altitude bridge welding, comprising a wearing end (1), a double-layer magnetic rope connected to the wearing end (1), and a hook (3) connected to an end of the double-layer magnetic rope away from the wearing end (1), characterized in that: The double-layer magnetic rope comprises two bolting ends (2) respectively connected to the wearing end (1) and the hook (3) and a two-state variable rope (4) connected between the two bolting ends (2); a gas cylinder (6) with a threaded plug is fastened at the connection between the wearing end (1) and the bolting end (2); the gas cylinder (6) is fixedly connected to the end of the bolting end (2); the two-state variable rope (4) comprises an outer nylon rope (41) and a plurality of inner magnetic rods (42) wrapped in the outer nylon rope (41); two adjacent inner magnetic rods (42) attract each other; the plurality of inner magnetic rods (42) are wrapped with an air net separator rope; an air pipe is embedded in the bolting end (2) connected to the wearing end (1); the two ends of the air pipe are respectively connected to the gas cylinder (6) and the air net separator rope; The air net spacer rope is filled with air through a gas cylinder (6), and the air is in a compressed state. The outer nylon rope (41) is a hollow tubular structure formed by weaving nylon ropes. The inner magnetic rod (42) is made of a hard material. The air net spacer rope comprises a plurality of pneumatic spacer bags (51) respectively located at the ends of the inner magnetic rod (42) and an air support net tube connected between two adjacent pneumatic spacer bags (51). The air support net tube is formed by weaving a plurality of hollow ropes (52) interwoven with each other, and the pneumatic spacer bags (51) and the hollow ropes (52) are connected with each other.

2. A safety auxiliary device for high-altitude bridge welding according to claim 1, characterized in that: The air net spacer rope is in an expanded state, and the air compression multiple is 2-3 times.

3. A safety auxiliary device for high-altitude bridge welding according to claim 1, characterized in that: The pneumatic sacs (51) and the hollow rope (52) are both made of flexible sealing materials, and the number of the pneumatic sacs (51) is two more than the number of the internal magnetic rods (42).

4. A safety auxiliary device for high-altitude bridge welding according to claim 1, characterized in that: A magnetic storage cavity (7) is bored inside the inner magnetic rod (42), and the magnetic storage cavity (7) is filled with magnetic fluid. The upper and lower ends of the inner magnetic rod (42) are fixedly connected to force-reducing variable ends (8), and the magnetic storage cavity (7) and the two force-reducing variable ends (8) are interconnected. A groove (9) is bored on the inner wall of the force-reducing variable end (8), and the groove (9) is filled with ferromagnetic mixed powder. A limited spacing net (10) is fixedly connected at the notch of the groove (9).

5. A safety auxiliary device for high-altitude bridge welding according to claim 4, characterized in that: The particle size of the ferromagnetic mixed powder is larger than the aperture of the limiting partition (10), and the mixing volume ratio of the iron powder and the magnetic powder in the ferromagnetic mixed powder is 1:1.5-2.

6. A safety auxiliary device for high-altitude bridge welding according to claim 5, characterized in that: The filling degree of the magnetic fluid in the magnetic storage cavity (7) is 85-90%.

7. A safety auxiliary device for high-altitude bridge welding according to claim 6, characterized in that: The force-reducing variable end (8) is made of an elastic material, and the lower end of the force-reducing variable end (8) is a curved surface structure.

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