Inhaul cable with anti-cutting structure
By combining the use of inner and outer tube structures and cut-resistant grout, the cut resistance of the stay cables is enhanced, solving the problem of stay cables being easily damaged by cutting tools and achieving a multi-layered protection effect.
Patent Information
- Application Number
- CN202520299615.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-02-24
AI Technical Summary
Existing cable stays have poor protection against cutting tools, making them susceptible to damage and affecting the safety and stability of the bridge.
It adopts an inner and outer tube structure, with cut-resistant grout filling between the inner and outer tubes. Longitudinal and transverse ribs can be added as options. Fireproof materials can be added to the outer tube, and explosion-proof materials can be included in the grout, forming a multi-layer protective structure.
The cables have been improved in terms of cut resistance, fire resistance, and explosion resistance, ensuring the safety and stability of the bridge.
Smart Images

Figure CN223907337U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bridge cable technology field more specifically, it relates to a kind of anti-cutting type structure cable. BACKGROUND
[0002] Cable plays a vital role in bridge construction, ensuring the stability and load-bearing capacity of bridge structure.
[0003] However, the cable is vulnerable to damage from the external environment, especially cutting damage caused by certain tools such as heat torches, grinding wheels, and diamond segmented wheels. These cutting tools pose a significant threat to the cable, which can lead to cable failure and thus affect the safety and stability of the entire bridge.
[0004] Currently, the protective measures for cable mainly focus on reducing wind-induced vibration, fire prevention, explosion prevention, and anti-icing, while less attention is paid to preventing cutting damage, which makes the cable particularly vulnerable to cutting tools and has poor anti-cutting performance. SUMMARY
[0005] The technical problem to be solved by the utility model is to address the above shortcomings of the prior art. The purpose of the utility model is to provide an anti-cutting type structure cable that can improve the anti-cutting performance.
[0006] The technical solution of the utility model is as follows: an anti-cutting type structure cable, comprising a cable body, an inner tube is sleeved around the cable body, an outer tube is sleeved around the inner tube, baffles are provided at both ends of the outer tube and the inner tube, a closed cavity is formed between the outer tube, the inner tube, and the baffles at both ends, a pouring port is provided at one end of the outer tube and communicates with the cavity, an exhaust port is provided at the other end of the outer tube and communicates with the cavity, and an anti-cutting pouring material is poured into the cavity.
[0007] As a further improvement, the anti-cutting pouring material includes at least one of ultra-high molecular weight polyethylene fiber, aramid fiber, glass fiber, steel wire fiber, basalt fiber, high-strength concrete, ceramic fiber, fiber cement, and rubber fiber.
[0008] Further, a rib body is provided in the cavity.
[0009] Further, the rib body includes at least one of longitudinal ribs, transverse ribs, and spiral ribs.
[0010] Further, the inner tube and the outer tube are both steel pipes.
[0011] Further, a fireproof material is provided around the cable body, the inner tube, or the outer tube.
[0012] Further, the fireproof material of the outer periphery of the cable body or the outer periphery of the inner tube or the outer periphery of the outer tube is a fireproof blanket or a non-intumescent fireproof coating or a heat insulation coating.
[0013] Further, the fireproof material of the outer periphery of the outer tube is an intumescent fireproof coating.
[0014] Further, the anti-cutting grouting material further comprises an explosion-proof material.
[0015] Further, the outer periphery of the cable body or the outer periphery of the inner tube or the outer periphery of the outer tube is provided with a fireproof material, and the anti-cutting grouting material further comprises an explosion-proof material.
[0016] Advantages
[0017] Compared with the prior art, the utility model has the advantages of:
[0018] 1. The utility model discloses a outer tube, anti -cutting grouting material and inner tube joint action can realize the improvement of the anti -cutting performance of the cable.
[0019] 2. The utility model discloses a outer tube or inner tube or the outer periphery of cable body increases fireproof material and can realize the improvement of the fireproof performance of the cable.
[0020] 3. The utility model discloses a explosion -proof material in anti -cutting grouting material can realize the improvement of the explosion -proof performance of the cable.
[0021] 4. The utility model discloses a anti -cutting grouting material, fireproof material and explosion -proof material combination uses and can realize the improvement of the anti -cutting + explosion -proof + fireproof performance of the cable. DRAWINGS
[0022] Fig. 1 It is the front view structural schematic drawing of the utility model;
[0023] Fig. 2 It is the left view structural schematic drawing of the utility model;
[0024] Fig. 3 It is the structural schematic drawing of the fireproof material in the utility model.
[0025] Among them: 1-cable body, 2-inner tube, 3-outer tube, 4-baffle, 5-grouting port, 6-exhaust port, 7-anti -cutting grouting material, 8-longitudinal rib, 9-cross rib, 10-fireproof material. DETAILED DESCRIPTION
[0026] The utility model will be further explained in combination with specific embodiment in the drawing.
[0027] Reference Figs. 1-3The application discloses a kind of anti-cutting structure inhaul cables, including cable body 1, the outer sleeve of cable body 1 is connected with inner tube 2, the outer sleeve of inner tube 2 is connected with outer tube 3, outer tube 3 and inner tube 2 both ends are equipped with baffle 4, outer tube 3, inner tube 2, baffle 4 between both ends form closed cavity, one end of outer tube 3 is equipped with with cavity communication perfusion mouth 5, the other end of outer tube 3 is equipped with with cavity communication exhaust port 6, cavity is filled with anti-cutting perfusion material 7.I.e., anti-cutting perfusion material 7 can be filled from perfusion mouth 5, air in cavity is exhausted from exhaust port 6, until filled with anti-cutting perfusion material 7 in cavity.By outer tube 3, anti-cutting perfusion material 7 and inner tube 2 jointly acting composition anti-cutting structure, can realize the anti-cutting performance of inhaul cable is improved.
[0028] Preferably, anti-cutting perfusion material 7 includes at least one of ultra-high molecular weight polyethylene fiber, aramid fiber, glass fiber, steel wire fiber, basalt fiber, high-strength concrete, ceramic fiber, fiber cement, rubber fiber.I.e., according to the requirement of different anti-cutting time and cutting tool, one or more materials are selected to mix and fill to ensure the anti-cutting effect.
[0029] The anti-cutting structure inhaul cable of the application can be prefabricated in a factory, and can also be assembled and filled at a construction site.
[0030] As a further improvement, a rib body is arranged in the cavity to strengthen the rigidity of the overall structure and the bonding effect of the anti-cutting perfusion material 7 and the overall structure, and to improve the overall anti-cutting capability.The rib body includes at least one of a longitudinal rib 8, a transverse rib 9 and a spiral rib (i.e., the spiral rib is similar to a spring and is sleeved on the outer periphery of the inner tube 2), and can be used in combination according to actual needs. Fig. 1 As shown in the figure, the longitudinal rib 8 and the transverse rib 9 are arranged in the cavity to improve the overall anti-cutting capability.
[0031] In one embodiment, the inner tube 2 and the outer tube 3 are both steel pipes, which can further improve the anti-cutting performance of the inhaul cable.Correspondingly, the baffle 4 is a steel plate, and the baffle 4 is welded to the inner tube 2 and the outer tube 3.
[0032] In one embodiment, the outer periphery of the cable body 1 or the outer periphery of the inner tube 2 or the outer periphery of the outer tube 3 is provided with fireproof material 10, which can improve the fireproof performance of the inhaul cable.
[0033] The fireproof material 10 on the outer periphery of the cable body 1 or the outer periphery of the inner tube 2 is a fireproof blanket or a non-intumescent fireproof coating or a heat insulation coating, i.e., the fireproof blanket is wrapped around the outer periphery of the cable body 1 or the inner tube 2, or the non-intumescent fireproof coating or the heat insulation coating is sprayed on the outer periphery of the inner tube 2.This way not only effectively protects the fireproof blanket, but also limits the fireproof blanket after the inner tube 2 is wrapped with the fireproof blanket or the non-intumescent fireproof coating or the heat insulation coating is sprayed on the outer periphery of the inner tube 2, and then the anti-cutting perfusion material 7 is filled, so that the fireproof blanket is effectively limited, and the use of the fireproof blanket or the fireproof coating or the heat insulation coating is more reliable.
[0034] The fireproof material 10 on the periphery of the outer tube 3 is an intumescent fireproof coating.
[0035] In an embodiment, the anti-cutting grouting 7 also comprises an anti-explosion material.
[0036] In an embodiment, the periphery of the cable body 1 or the periphery of the inner tube 2 or the periphery of the outer tube 3 is provided with the fireproof material 10, and the anti-cutting grouting 7 also comprises an anti-explosion material.
[0037] The anti-cutting cable of the utility model provides the anti-cutting structure for the cable on the basis of not changing the original function of the cable, and through the flexible combination of the fireproof material 10 or the anti-explosion material on the basis of the structure, the novel cable with multiple protections can be realized, and the anti-cutting structure and the cable body are separated from each other, so that the performance and construction of the cable are not affected.
[0038] The above is only the preferred embodiment of the utility model, and it should be pointed out that for the person skilled in the art, without departing from the structure of the utility model, a number of modifications and improvements can be made, which will not affect the effect and practicality of the utility model.
Claims
1. A cut-resistant structural cable comprising a cable body (1), characterised in that, The outer periphery of the cable body (1) is sleeved with an inner tube (2), the outer periphery of the inner tube (2) is sleeved with an outer tube (3), the outer tube (3) is provided with a baffle (4) at both ends of the inner tube (2), a closed cavity is formed between the outer tube (3), the inner tube (2) and the baffles (4) at both ends, one end of the outer tube (3) is provided with a pouring port (5) in communication with the cavity, the other end of the outer tube (3) is provided with an exhaust port (6) in communication with the cavity, and the cavity is filled with a cutting-resistant pouring material (7).
2. The cut-resistant structural cable of claim 1, wherein, The cutting-resistant pouring material (7) comprises at least one of an ultra-high molecular weight polyethylene fiber, an aramid fiber, a glass fiber, a steel wire fiber, a basalt fiber, high-strength concrete, a ceramic fiber, a fiber cement and a rubber fiber.
3. The cut-resistant structural cable of claim 1, wherein, The cavity is provided with a rib body.
4. The cut-resistant structural cable of claim 3, wherein, The rib body comprises at least one of a longitudinal rib (8), a transverse rib (9) and a spiral rib.
5. The cut-resistant structural cable of claim 1, wherein, The inner tube (2) and the outer tube (3) are steel tubes.
6. The cut-resistant structural cable of any of claims 1-5, wherein, The outer periphery of the cable body (1), the outer periphery of the inner tube (2) or the outer periphery of the outer tube (3) is provided with a fireproof material (10).
7. The cut-resistant structural cable of claim 6, wherein, The fireproof material (10) on the outer periphery of the cable body (1) or the outer periphery of the inner tube (2) is a fireproof blanket or a non-intumescent fireproof coating or a heat insulation coating.
8. The cut-resistant structural cable of claim 6, wherein, The fireproof material (10) on the outer periphery of the outer tube (3) is an intumescent fireproof coating.
9. The cut-resistant structural cable of any of claims 1-5, wherein, The cutting-resistant pouring material (7) further comprises an explosion-proof material.
10. The cut-resistant structural cable of any of claims 1-5, wherein, The outer periphery of the cable body (1), the outer periphery of the inner tube (2) or the outer periphery of the outer tube (3) is provided with a fireproof material (10), and the cutting-resistant pouring material (7) further comprises an explosion-proof material.