Knock-resistant, water-spray-resistant and flame-retardant cable

Abstract

The utility model relates to the technical field of cables, and discloses a knock-resistant, water-spray-resistant and flame-retardant cable, which comprises a wire core, an insulating layer fixedly connected to the outer side of the wire core, a filling layer fixedly connected to the outer side of the insulating layer, a winding layer fixedly connected to the outer side of a braid layer, a reinforcing layer arranged on the outer side of the winding layer, and a flame-retardant layer arranged on the outer side of the reinforcing layer. A sheath is arranged on the outer side of the reinforcing layer, a protective layer is fixedly connected to the outer side of the sheath, and a supporting mechanism is arranged in the protective layer; the supporting mechanism comprises a supporting ring, a first clamping ring and a second clamping ring, and the first clamping ring and the second clamping ring are fixedly connected to the two sides of the supporting ring respectively. According to the utility model, through the cooperation of the protective layer, the first clamping ring, the second clamping ring and the supporting ring, when the cable is impacted, the first clamping ring, the supporting ring and the second clamping ring are extruded and deformed, and the first clamping ring, the supporting ring and the second clamping ring are extruded mutually, so that the impact force can be buffered, and the impact force resistance of the cable is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a knock-resistant, water-spray-resistant and flame-retardant cable. Background Art

[0002] Cable is a collection of conductors used to transmit power or telecommunication signals, usually composed of multiple insulated conductors, insulation materials, braiding layers, sheaths, etc. Cables come in a variety of types and structures, suitable for different applications.

[0003] After searching, the Chinese patent document with the announcement number CN219575226U discloses a knock-resistant, water-spray-resistant, flame-retardant cable. The knock-resistant, water-spray-resistant, flame-retardant cable includes a conductor, a fire-resistant layer, an insulating layer, a filling strip, a sheath, an oxygen-insulating layer, a metal layer, and an outer sheath. Since the fire-resistant layer of the cable is a double-layer ceramic mica tape, it can withstand high temperatures up to 950°C and pass a 180-minute fire-resistant test, so the cable has better fire resistance. The oxygen-insulating material is made of silicone rubber material, which is flexible at room temperature and remains soft at high temperatures. It can buffer impact force and prevent the internal structure of the cable from being damaged when a heavy object hits it, thereby ensuring that the cable can operate normally even in the event of a fire, and enhancing its knock resistance. The outer sheath of the cable is made of polyolefin material, which has excellent flame-retardant properties. It does not produce a large amount of smoke when it burns, and is a low-smoke, halogen-free, environmentally friendly material with lower smoke toxicity, which is more conducive to personal safety.

[0004] This patent solves the problem that traditional cable materials may have insufficient flame retardancy, high smoke toxicity, and poor environmental friendliness, which may pose certain risks to the sustainable and normal operation of the cable when a fire occurs.

[0005] However, during the use of this cable, the outer sheath is made of polyolefin material, which has excellent flame retardant properties. It does not produce a large amount of smoke when burned, and is a low-smoke, halogen-free, environmentally friendly material with lower smoke toxicity, which is more conducive to personal safety. Although polyolefin material as the cable outer sheath can provide excellent weather resistance, chemical resistance, wear resistance and flexibility, when the cable is impacted or hit, the instantaneous impact force generated is large, which can easily cause the outermost layer of the cable to rupture, thereby causing safety hazards. Utility Model Content

[0006] In order to make up for the above deficiencies, the utility model provides an impact-resistant, water-spray-resistant, flame-retardant cable, which aims to improve the existing impact-resistant, water-spray-resistant, flame-retardant cable. During use, although polyolefin material is used as the cable outer sheath to protect the cable, when the cable is impacted or hit, the instantaneous impact force generated is large, which can easily cause the outermost layer of the cable to rupture, thereby causing a safety hazard.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a knock-resistant, water-spray-resistant, flame-retardant cable, comprising a wire core, an insulating layer is fixedly connected to the outer side of the wire core, a filling layer is fixedly connected to the outer side of the insulating layer, a fireproof layer is fixedly connected to the outer side of the filling layer, a braided layer is fixedly connected to the outer side of the fireproof layer, a braided mesh is arranged inside the braided layer, a winding layer is fixedly connected to the outer side of the braided layer, a reinforcement layer is arranged outside the winding layer, a sheath is arranged outside the reinforcement layer, a protective layer is fixedly connected to the outer side of the sheath, and a supporting mechanism is arranged inside the protective layer;

[0008] The supporting mechanism comprises a support ring, a first clamping ring and a second clamping ring, wherein the first clamping ring and the second clamping ring are respectively fixedly connected to two sides of the support ring.

[0009] Through the above technical solution, when the cable is impacted, the protective layer will be compressed, and the pressure can be transferred to the first clamping ring and the second clamping ring. The first clamping ring and the second clamping ring can be pulled by the support ring. At this time, the first clamping ring, the support ring and the second clamping ring will be squeezed and deformed, and mutual squeezing will occur between the three, thereby achieving buffering of the impact force and improving the impact resistance of the cable.

[0010] As a further description of the above technical solution:

[0011] The first clamping ring and the second clamping ring are fixedly connected to the upper and lower inner walls of the protective layer respectively.

[0012] As a further description of the above technical solution:

[0013] The insulating layer and the filling layer are both made of rubber material, the woven mesh is made of glass fiber material, and the winding layer is made of aluminum-plated tape material.

[0014] Through the above technical scheme, the insulating layer and the filling layer can make the wire core in an insulated and sealed state, the glass fiber can be used to improve the hardness of the cable, and the aluminum-plated tape can be used to enhance the mechanical strength of the cable.

[0015] As a further description of the above technical solution:

[0016] The protective layer, the first clamp ring, the second clamp ring and the support ring are all made of fluororubber material, and filling gas is arranged between the protective layer, the first clamp ring, the second clamp ring and the support ring.

[0017] As a further description of the above technical solution:

[0018] The first clamping ring and the second clamping ring are distributed in a diamond shape.

[0019] As a further description of the above technical solution:

[0020] The filling gas is set to be nitrogen.

[0021] Through the above technical solution, while the impact force is buffered by the deformation of the protective layer, the first clamp ring, the second clamp ring and the support ring, the nitrogen will also be compressed, which can further buffer the impact force. In addition, the characteristic of nitrogen not supporting combustion can provide fire protection inside the cable, which can effectively suppress the spread of flames, thereby reducing the fire when the cable burns.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, through the cooperation of the protective layer, the first clamp ring, the second clamp ring and the support ring, when the cable is impacted, the first clamp ring, the support ring and the second clamp ring will be squeezed and deformed, and mutual squeezing will occur between the three, thereby achieving buffering of the impact force and improving the impact resistance of the cable.

[0024] 2. In the utility model, the mechanical compression property of nitrogen can be used to further buffer the impact force, and the property of nitrogen not supporting combustion can be used to provide fire protection inside the cable, which can effectively suppress the spread of flames and thus reduce the fire intensity of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a three-dimensional structural schematic diagram of the impact-resistant, water-spray-resistant and flame-retardant cable proposed by the utility model;

[0026] Figure 2 This is a front cross-sectional view of the impact-resistant, water-spray-resistant and flame-retardant cable proposed by the utility model;

[0027] Figure 3 This is a cross-sectional view of the support ring structure of the impact-resistant, water-spray-resistant and flame-retardant cable proposed by the utility model;

[0028] Figure 4 This is a cross-sectional view of the first clamping ring structure of the impact-resistant, water-spray-resistant and flame-retardant cable proposed by the utility model;

[0029] Figure 5 This is a cross-sectional view of the braided layer of the impact-resistant, water-spray-resistant and flame-retardant cable proposed by the utility model after being laid flat.

[0030] Legend:

[0031] 1. Wire core; 2. Insulation layer; 3. Filling layer; 4. Fireproof layer; 5. Braided layer; 6. Braided mesh; 7. Wrapping layer; 8. Reinforcement layer; 9. Sheath; 10. Protective layer; 11. First clamp ring; 12. Second clamp ring; 13. Branch ring; 14. Filling gas. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the specification of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Reference Figure 1 , Figure 2 and Figure 5 The utility model provides an embodiment: an impact-resistant, water-spray-resistant, flame-retardant cable, comprising a wire core 1, an insulating layer 2 is fixedly connected to the outside of the wire core 1, a filling layer 3 is fixedly connected to the outside of the insulating layer 2, a fireproof layer 4 is fixedly connected to the outside of the filling layer 3, a braided layer 5 is fixedly connected to the outside of the fireproof layer 4, a braided mesh 6 is arranged inside the braided layer 5, a winding layer 7 is fixedly connected to the outside of the braided layer 5, a reinforcement layer 8 is arranged on the outside of the winding layer 7, a sheath 9 is arranged on the outside of the reinforcement layer 8, a protective layer 10 is fixedly connected to the outside of the sheath 9, and a supporting mechanism is arranged inside the protective layer 10.

[0034] The supporting mechanism includes a support ring 13, a first clamp ring 11 and a second clamp ring 12, and the first clamp ring 11 and the second clamp ring 12 are respectively fixedly connected to both sides of the support ring 13. The first clamp ring 11 and the second clamp ring 12 are respectively fixedly connected to the upper and lower inner walls of the protective layer 10.

[0035] During use, when the cable is impacted, the protective layer 10 will first be subjected to pressure and compressed. At this time, the pressure will continue to be transmitted to the first clamping ring 11 and the second clamping ring 12, thereby driving the first clamping ring 11, the support ring 13 and the second clamping ring 12 to be squeezed and deformed, thereby achieving buffering of the impact force and improving the impact resistance of the cable.

[0036] Reference Figure 1-2 The insulating layer 2 and the filling layer 3 are both made of rubber material, the braided mesh 6 is made of glass fiber material, and the winding layer 7 is made of aluminum-plated tape material.

[0037] The insulating layer 2 and the filling layer 3 can make the core 1 in an insulated and sealed state to avoid leakage. The glass fiber can improve the hardness of the cable. The aluminum-plated tape can enhance the mechanical strength of the cable and improve the cable's ability to resist tension, compression and external physical damage.

[0038] Reference Figure 2-4 The protective layer 10, the first clamp ring 11, the second clamp ring 12 and the support ring 13 are all made of fluororubber, and a filling gas 14 is provided between the protective layer 10, the first clamp ring 11, the second clamp ring 12 and the support ring 13. In this embodiment, the first clamp ring 11 and the second clamp ring 12 are distributed in a diamond shape. The filling gas 14 is set to nitrogen.

[0039] When the cable catches fire, since the protective layer 10 is arranged on the outermost side of the cable, and nitrogen is arranged as the filling gas 14 between the protective layer 10, the first clamp ring 11, the second clamp ring 12 and the support ring 13, and since nitrogen does not support combustion, when the cable catches fire, the spread of the flame can be effectively suppressed, thereby slowing down the fire when the cable burns, thereby improving the fireproof performance of the cable and further improving the safety of use.

[0040] Working principle: When the cable is in use, when it is impacted by the outside world, the pressure generated at this time will first act on the protective layer 10, which will cause the protective layer 10 to deform, and then squeeze the first clamp ring 11 and the second clamp ring 12 inside the protective layer 10. After the first clamp ring 11 and the second clamp ring 12 are squeezed, they will deform, and then pull the support ring 13 to drive it to deform together. At this time, the generated pressure can be buffered, and a filling gas 14 is provided between the protective layer 10, the first clamp ring 11, the second clamp ring 12 and the support ring 13, and the filling gas 14 is nitrogen. The characteristic of nitrogen that can be mechanically compressed can further buffer the pressure, thereby reducing the pressure acting on the core 1, so that the cable has the effect of buffering the pressure when it is impacted, thereby improving the protection of the core 1;

[0041] At the same time, by setting the protective layer 10, the first clamp ring 11, the second clamp ring 12 and the support ring 13 to be made of fluororubber, which has good water resistance and is not easy to absorb water or be penetrated by water, the cable can have good spray resistance. At the same time, fluororubber also has good corrosion resistance, which can prevent the outer layer of the cable from being corroded or dissolved when there are some chemical substances in the water, thereby further improving the protection effect of the core 1.

[0042] Furthermore, when the cable burns, since the protective layer 10 is arranged on the outermost side of the cable and nitrogen is arranged inside the protective layer 10, the characteristic of nitrogen not supporting combustion can provide a fireproof effect inside the cable, which can effectively suppress the spread of flames, thereby slowing down the fire when the cable burns, thereby improving the fireproof performance of the cable and further improving the safety of use.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A shock-resistant, water-spray-resistant, flame-retardant cable, comprising a wire core (1), characterized in that: The outer side of the wire core (1) is fixedly connected to an insulating layer (2), the outer side of the insulating layer (2) is fixedly connected to a filling layer (3), the outer side of the filling layer (3) is fixedly connected to a fireproof layer (4), the outer side of the fireproof layer (4) is fixedly connected to a braided layer (5), the interior of the braided layer (5) is provided with a braided mesh (6), the outer side of the braided layer (5) is fixedly connected to a winding layer (7), the outer side of the winding layer (7) is provided with a reinforcement layer (8), the outer side of the reinforcement layer (8) is provided with a sheath (9), the outer side of the sheath (9) is fixedly connected to a protective layer (10), and the interior of the protective layer (10) is provided with a supporting mechanism; the supporting mechanism comprises a support ring (13), a first clamp ring (11) and a second clamp ring (12), the first clamp ring (11) and the second clamp ring (12) being fixedly connected to two sides of the support ring (13), respectively.

2. The impact-resistant and water-spray-resistant flame-retardant cable according to claim 1, characterized in that: The first clamping ring (11) and the second clamping ring (12) are fixedly connected to the upper and lower inner walls of the protective layer (10) respectively.

3. The impact-resistant and water-spray-resistant flame-retardant cable according to claim 1, characterized in that: The insulating layer (2) and the filling layer (3) are both made of rubber material, the braided mesh (6) is made of glass fiber material, and the winding layer (7) is made of aluminum-plated tape material.

4. The impact-resistant and water-spray-resistant flame-retardant cable according to claim 3 is characterized in that: The protective layer (10), the first clamping ring (11), the second clamping ring (12) and the supporting ring (13) are all made of fluororubber material, and filling gas (14) is provided between the protective layer (10), the first clamping ring (11), the second clamping ring (12) and the supporting ring (13).

5. The impact-resistant and water-spray-resistant flame-retardant cable according to claim 4, characterized in that: The first clamping ring (11) and the second clamping ring (12) are distributed in a diamond shape.

6. The impact-resistant and water-spray-resistant flame-retardant cable according to claim 4, characterized in that: The filling gas (14) is set to be nitrogen.

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