High-strength fireproof cable

Abstract

The utility model discloses a high-strength fireproof cable which comprises a reinforced winding layer arranged on the outer side of a cable core, a wrapping layer arranged on the outer side of the reinforced winding layer, a reinforced composite layer arranged on the outer side of the wrapping layer, an asbestos yarn braid layer arranged on the outer side of the reinforced composite layer, and a metal wire braid layer arranged on the outer side of the asbestos yarn braid layer. An aramid fiber high-density braid layer is arranged on the outer side of the metal wire braid layer; by means of the design of the multi-layer woven structure, winding of the high-strength wire harness and wrapping of the metal wire woven layer, the strength of the cable is greatly improved, meanwhile, the anti-skid high-temperature-resistant coating is matched with the metal wire woven layer and the asbestos yarn woven layer, and the multi-layer high-temperature-resistant fireproof effect can be achieved; and the flame-retardant powder filled in the cable can effectively prevent the cable from burning, so that the fireproof performance is further improved, and the applicability of the cable is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a high-strength fireproof cable. Background Art

[0002] Cables have properties such as tensile resistance, impact resistance, abrasion resistance, flexibility and softness, and are multi-strand ropes used to tie ships; they are required to have properties such as tensile resistance, impact resistance, abrasion resistance, flexibility and softness; in the past, steel cables, hemp or cotton ropes were commonly used; after synthetic fibers appeared, most of them have been made of textile materials such as nylon, polypropylene, vinylon, and polyester.

[0003] At present, cables with good flexibility and abrasion resistance are required in fire fighting and rescue or some rock climbing sports. However, the existing cables on the market only have abrasion resistance, and the fireproof property is only achieved by simply soaking in fireproof liquid and drying. Repeated exposure to rain and water during long-term use will cause the fireproof property to fail and the durability to be poor. At the same time, traditional fire fighting and rescue cables need to withstand open fire burning, resulting in limited use of traditional fire fighting and rescue ropes. When rescuing, a suitable fixed position needs to be found, which affects the rescue speed. Therefore, the utility model proposes a high-strength fireproof cable to solve the problems existing in the prior art. Content of the Utility Model

[0004] Aiming at the above problems, the purpose of the utility model is to propose a high-strength fireproof cable. Through the design of a multi-layer braided structure, combined with the winding of high-strength wire bundles and the wrapping of a metal wire braided layer, the strength of the cable is greatly improved. At the same time, the anti-slip and high-temperature resistant coating, combined with the metal wire braided layer and the asbestos wire braided layer, can achieve the effect of multi-layer high-temperature fire protection. The internally filled flame retardant powder can effectively prevent the cable from burning, further improving the fireproof performance and effectively increasing the applicability of the cable.

[0005] To achieve the purpose of the utility model, the utility model is realized through the following technical solutions: A high-strength fireproof cable includes a cable core, an intermediate layer and an outer protective layer. The intermediate layer includes a strengthening winding layer, a wrapping layer and a strengthening composite layer. The strengthening winding layer is arranged outside the cable core, the wrapping layer is arranged outside the strengthening winding layer. After the strengthening winding layer is wound, the whole cable is immersed in molten rubber and undergoes multiple dipping operations to form the wrapping layer. The strengthening composite layer is arranged outside the wrapping layer. The outer protective layer includes an asbestos wire braided layer, a metal wire braided layer and an aramid fiber high-density braided layer. The asbestos wire braided layer is braided outside the strengthening composite layer, the metal wire braided layer is arranged outside the asbestos wire braided layer, and the aramid fiber high-density braided layer is arranged outside the metal wire braided layer. The braided structure of the aramid fiber high-density braided layer is the same as that of the braided belt of an automobile seat belt.

[0006] A further improvement lies in that: the strengthening winding layer is formed by helically winding multiple high-strength wire bundles arranged densely around the cable core. The high-strength wire bundle is composed of a metal wire core and an outer winding layer. The metal wire core is a soft steel wire with a diameter of 1.5 mm, and the outer winding layer is formed by braiding aramid fibers with a thickness of 1 mm, and the braiding method is cross-dense braiding.

[0007] A further improvement lies in that: the wrapping layer is a rubber layer with a thickness of 2 mm, and the strengthening composite layer is a composite rope with a diameter of 5 mm arranged closely. The composite rope is formed by helically braiding aramid fibers and ultra-high molecular weight polyethylene fibers.

[0008] A further improvement lies in that: the asbestos wire braiding layer is formed by cross-densely braiding asbestos wires with a diameter of 3 mm. A flame retardant powder is filled between the asbestos wire braiding layer and the strengthening composite layer, and a plastic film layer with a thickness of 0.2 mm is wrapped outside the asbestos wire braiding layer.

[0009] A further improvement lies in that: the metal wire braiding layer is formed by braiding soft steel wires with a diameter of 0.8 mm, which can effectively improve the strength of the cable and have a certain fire prevention effect. The cable will not break even when encountering an open flame burning. The high-density aramid fiber braiding layer is formed by cross-densely braiding aramid fibers with a thickness of 4 mm; an anti-slip and high-temperature resistant coating is sprayed outside the high-density aramid fiber braiding layer.

[0010] The beneficial effects of the present utility model are as follows: through the design of a multi-layer braiding structure, combined with the winding of high-strength wire bundles and the wrapping of the metal wire braiding layer, the strength of the cable is greatly improved. At the same time, through the anti-slip and high-temperature resistant coating, combined with the metal wire braiding layer and the asbestos wire braiding layer, a multi-layer high-temperature and fire prevention effect can be achieved. The internally filled flame retardant powder can effectively prevent the cable from burning, further improving the fire prevention performance and effectively increasing the applicability of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic cross-sectional view of the cable of the present utility model.

[0012] Wherein: 1. Cable core; 2. Strengthening winding layer; 201. Metal wire core; 202. Outer winding layer; 3. Wrapping layer; 4. Strengthening composite layer; 401. Aramid fiber; 402. Ultra-high molecular weight polyethylene fiber; 5. Asbestos wire braiding layer; 6. Metal wire braiding layer; 7. High-density aramid fiber braiding layer; 8. Flame retardant powder; 9. Plastic film layer; 10. Anti-slip and high-temperature resistant coating. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] In order to deepen the understanding of the present utility model, the following will further describe the present utility model in detail in combination with embodiments. These embodiments are only used to explain the present utility model and do not constitute a limitation to the protection scope of the present utility model.

[0014] According to Figure 1 As shown, this embodiment provides a high-strength fireproof cable, which includes a cable core 1, an intermediate layer, and an outer protective layer. The intermediate layer includes a reinforcing winding layer 2, a wrapping layer 3, and a reinforcing composite layer 4. The reinforcing winding layer 2 is arranged outside the cable core 1. The wrapping layer 3 is arranged outside the reinforcing winding layer 2. After the reinforcing winding layer is wound, the whole cable is immersed in molten rubber to form the wrapping layer through multiple dipping processes. The reinforcing composite layer 4 is arranged outside the wrapping layer 3. The outer protective layer includes an asbestos wire braided layer 5, a metal wire braided layer 6, and an aramid fiber high-density braided layer 7. The asbestos wire braided layer 5 is braided outside the reinforcing composite layer 4. The metal wire braided layer 6 is arranged outside the asbestos wire braided layer 5. The aramid fiber high-density braided layer 7 is arranged outside the metal wire braided layer 6. The braided structure of the aramid fiber high-density braided layer is the same as that of the braided belt of an automobile safety belt, effectively improving the tensile strength and wear resistance of the cable.

[0015] The reinforcing winding layer 2 is formed by spirally winding multiple intensively arranged high-strength wire bundles outside the cable core 1. The high-strength wire bundles are composed of a metal wire core 201 and an outer winding layer 202. The metal wire core 201 is a soft steel wire with a diameter of 1.5 mm. The outer winding layer 202 is formed by braiding aramid fibers with a thickness of 1 mm, and the braiding method is cross-intensive braiding.

[0016] The wrapping layer 3 is a rubber layer with a thickness of 2 mm. The reinforcing composite layer 4 is a composite rope with a diameter of 5 mm arranged closely. The composite rope is formed by spiral braiding of aramid fibers 401 and ultra-high molecular weight polyethylene fibers 402.

[0017] The asbestos wire braided layer 5 is formed by cross-intensive braiding of asbestos wires with a diameter of 3 mm. A flame retardant powder 8 is filled between the asbestos wire braided layer 5 and the reinforcing composite layer 4. The outside of the asbestos wire braided layer 5 is wrapped with a plastic film layer 9 with a thickness of 0.2 mm. When encountering a burning open flame, the plastic film layer is damaged by heat. Subsequently, the internal flame retardant powder is exposed through the asbestos wire braided layer and the metal wire braided layer with gaps, playing a role in flame retardant and fire extinguishing, and preventing the open flame from continuing to burn the cable.

[0018] The metal wire braided layer 6 is formed by braiding soft steel wires with a diameter of 0.8 mm, which can effectively improve the strength of the cable and have a certain fireproof effect. It will not break even when the cable is burned by an open flame. The aramid fiber high-density braided layer 7 is formed by high-density cross-braiding of aramid fibers, and its thickness is 4 mm; an anti-slip and high-temperature resistant coating 10 is sprayed on the outside of the aramid fiber high-density braided layer 7.

[0019] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A high-strength fireproof cable, characterized in that: It includes a cable core (1), an intermediate layer, and an outer protective layer. The intermediate layer includes a strengthening winding layer (2), a wrapping layer (3), and a strengthening composite layer (4). The strengthening winding layer (2) is arranged outside the cable core (1), the wrapping layer (3) is arranged outside the strengthening winding layer (2), and the strengthening composite layer (4) is arranged outside the wrapping layer (3). The outer protective layer includes an asbestos wire braided layer (5), a metal wire braided layer (6), and an aramid fiber high-density braided layer (7). The asbestos wire braided layer (5) is arranged outside the strengthening composite layer (4), the metal wire braided layer (6) is arranged outside the asbestos wire braided layer (5), and the aramid fiber high-density braided layer (7) is arranged outside the metal wire braided layer (6).

2. The high-strength fireproof cable according to claim 1, characterized in that: The strengthening winding layer (2) is formed by helically winding multiple intensively arranged high-strength wire bundles outside the cable core (1). The high-strength wire bundle is composed of a metal wire core (201) and an outer winding layer (202). The metal wire core (201) is a soft steel wire with a diameter of 1.5 mm, and the outer winding layer (202) is formed by braiding aramid fibers with a thickness of 1 mm.

3. A high-strength fireproof cable according to claim 1, characterized in that: The wrapping layer (3) is a rubber layer with a thickness of 2 mm, and the strengthening composite layer (4) is a composite rope with a diameter of 5 mm arranged closely. The composite rope is formed by helically braiding aramid fibers (401) and ultra-high molecular weight polyethylene fibers (402).

4. A high-strength fireproof cable according to claim 1, characterized in that: The asbestos wire braided layer (5) is formed by cross-intensively braiding asbestos wires with a diameter of 3 mm. A flame retardant powder (8) is filled between the asbestos wire braided layer (5) and the strengthening composite layer (4). The outside of the asbestos wire braided layer (5) is wrapped with a plastic film layer (9) with a thickness of 0.2 mm.

5. A high-strength fireproof cable according to claim 1, characterized in that: The metal wire braided layer (6) is formed by braiding soft steel wires with a diameter of 0.8 mm, and the aramid fiber high-density braided layer (7) is formed by high-density cross-braiding of aramid fibers with a thickness of 4 mm; the outside of the aramid fiber high-density braided layer (7) is sprayed with an anti-slip and high-temperature resistant coating (10).

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