High-flexibility fireproof wire and cable structure

Abstract

The utility model belongs to the technical field of wires and cables, and particularly relates to a high-flexibility fireproof wire and cable structure, which comprises a sheath layer, two annular grooves are arranged on the outer wall of the sheath layer, connecting rings are arranged in the two annular grooves, four positioning blocks are annularly distributed on the outer wall of each connecting ring, and the outer wall of each positioning block is provided with a plurality of grooves. And threaded holes are formed in the outer walls of the four positioning blocks. According to the utility model, the outer wall of the end part of the sheath layer is provided with the two annular grooves, then the connecting rings are sleeved on the inner sides of the annular grooves, the wear-resistant sleeve is sleeved on the outer wall of the sheath layer, and the two connecting rings are positioned at the two ends of the inner side of the wear-resistant sleeve, so that the positioning blocks are positioned in the positioning grooves; the wear-resistant sleeve is arranged on the end portion of the cable, then the locking bolt penetrates through the wear-resistant sleeve and is connected with the threaded hole in the positioning block, so that the wear-resistant sleeve can be installed on the end portion of the cable, then the wear-resistant sleeve and the protruding wear-resistant protruding block can play a role in protecting the end portion in the cable pulling process, and then safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electric wire and cable, specifically relates to a high flexibility fireproof electric wire and cable structure. BACKGROUND

[0002] The general electric wire and cable is insulated with plastic and rubber, and these materials are conventional engineering materials, have abundant sources, can satisfy large-scale production and are relatively low in cost. However, for some special industries such as petroleum chemical industry, steel, aerospace, shipbuilding, military industry, pharmacy, food, plastic machinery and boiler, the electric wire and cable capable of resisting certain high temperature is required, and the ordinary electric wire and cable cannot be used, and the electric wire and cable capable of resisting high temperature can ensure the safe operation of power and signal.

[0003] At present, the existing high flexibility fireproof electric wire and cable needs to transport and install the flame-retardant power cable in a suitable position in the process of use, and the end of the high flexibility fireproof electric wire and cable is in contact with the ground when being dragged during installation, and is rubbed with the ground in the process of continuous pulling, so that the outer wall of the high flexibility fireproof electric wire and cable can be abraded, thereby reducing the safety in the process of use. UTILITARIAN CONTENT

[0004] The utility model discloses a high flexibility fireproof electric wire and cable structure, and aims at solving the problem that the existing high flexibility fireproof electric wire and cable is transported and installed in a suitable position in the process of use, and the end of the high flexibility fireproof electric wire and cable is in contact with the ground when being dragged during installation, and is rubbed with the ground in the process of continuous pulling, so that the outer wall of the high flexibility fireproof electric wire and cable can be abraded, thereby reducing the safety in the process of use.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: a high flexibility fireproof electric wire and cable structure, including the sheath layer, the outer wall of sheath layer is equipped with two annular grooves, the inside of two annular grooves is provided with the connecting ring, the outer wall of connecting ring annularly is distributed with four positioning blocks, the outer wall of four positioning blocks is equipped with the threaded hole, the outer wall of sheath layer is sleeved with the wear -resisting cover, the outer wall of wear -resisting cover annularly is distributed with a plurality of grooves, a plurality of grooves are internally screwed and are penetrated with the locking bolt.

[0006] As a high flexibility fireproof electric wire and cable structure of the utility model preferably, the inner wall of wear -resisting cover is equipped with four positioning grooves, and four positioning grooves are annularly distributed.

[0007] As a preferred embodiment of the high-flexibility fireproof wire and cable structure of this utility model, the two connecting rings are located at both ends of the inner side of the wear-resistant sleeve.

[0008] In a preferred embodiment of the high-flexibility fireproof wire and cable structure of this utility model, the positioning block is located inside the positioning groove.

[0009] As a preferred embodiment of the high-flexibility fireproof wire and cable structure of this utility model, the outer wall of the wear-resistant sleeve is connected with a plurality of wear-resistant protrusions, and the plurality of wear-resistant protrusions are arranged in a ring.

[0010] As a preferred embodiment of the high-flexibility fireproof wire and cable structure of this utility model, the outer wall of the wear-resistant sleeve is provided with multiple anti-slip grooves, and the multiple anti-slip grooves are distributed in a ring.

[0011] As a preferred embodiment of the high-flexibility fireproof wire and cable structure of this utility model, a shielding layer is sleeved inside the sheath layer, a fireproof layer is sleeved inside the shielding layer, an insulation layer is provided inside the fireproof layer, and a conductor is provided inside the insulation layer.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] By creating two annular grooves on the outer wall of the sheath layer, connecting rings are fitted inside, and then a wear-resistant sleeve is fitted onto the outer wall of the sheath layer, with the two connecting rings positioned at the inner ends of the wear-resistant sleeve. At this point, the positioning block is located within the positioning groove. A locking bolt is then used to connect the wear-resistant sleeve to the threaded hole on the positioning block, allowing the wear-resistant sleeve to be installed at the end of the wire or cable. The wear-resistant sleeve and the protruding wear-resistant protrusions can protect areas prone to wear during cable pulling, thereby improving safety.

[0014] The positioning block and positioning groove can play a positioning role during the installation of the wear-resistant sleeve, so that the threaded locking bolt on the wear-resistant sleeve corresponds to the threaded hole on the positioning block, thereby improving the convenience of installation. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the main cross-sectional structure of this utility model;

[0018] Figure 3This is a schematic diagram of the sheath layer structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the wear-resistant sleeve structure of this utility model;

[0020] Figure 5 This is an enlarged structural schematic diagram of the present invention.

[0021] In the diagram: 1. Sheath layer; 2. Shielding layer; 3. Fireproof layer; 4. Insulation layer; 5. Conductor; 6. Annular groove; 7. Connecting ring; 8. Positioning block; 9. Threaded hole; 10. Wear-resistant sleeve; 11. Groove; 12. Locking bolt; 13. Positioning groove; 14. Wear-resistant protrusion; 15. Anti-slip groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5 The present invention provides the following technical solution: a highly flexible fireproof wire and cable structure, including a sheath layer 1, two annular grooves 6 are opened on the outer wall of the sheath layer 1, a connecting ring 7 is arranged inside the two annular grooves 6, four positioning blocks 8 are distributed in an annular pattern on the outer wall of the connecting ring 7, threaded holes 9 are opened on the outer wall of the four positioning blocks 8, a wear-resistant sleeve 10 is sleeved on the outer wall of the sheath layer 1, a plurality of grooves 11 are distributed in an annular pattern on the outer wall of the wear-resistant sleeve 10, and locking bolts 12 are threaded through the interior of the plurality of grooves 11.

[0024] It should be noted that the connecting ring 7 is made up of two semi-circular rings joined together, and the joint is fixed by welding, so that it fits inside the annular groove 6.

[0025] Preferably, the inner wall of the wear-resistant sleeve 10 has four positioning grooves 13, which are arranged in a ring. Two connecting rings 7 are located at the inner ends of the wear-resistant sleeve 10. The outer wall of the wear-resistant sleeve 10 is connected with multiple wear-resistant protrusions 14, which are arranged in a ring.

[0026] In practical use, two annular grooves 6 are opened on the outer wall of the end of the sheath layer 1, and then the connecting ring 7 is sleeved on its inner side. Then the wear-resistant sleeve 10 is sleeved on the outer wall of the sheath layer 1, and the two connecting rings 7 are located at the inner ends of the wear-resistant sleeve 10. At this time, the positioning block 8 will be located in the positioning groove 13. Then, the locking bolt 12 passes through the threaded hole 9 on the positioning block 8 and is connected to the wear-resistant sleeve 10, so that the wear-resistant sleeve 10 can be installed at the end of the wire and cable. Then, the wear-resistant sleeve 10 and the protruding wear-resistant protrusion 14 can protect the end during the pulling of the cable.

[0027] Preferably, the positioning block 8 is located inside the positioning groove 13.

[0028] In practical use, the positioning block 8 and the positioning groove 13 can play a positioning role during the installation of the wear-resistant sleeve 10, so that the locking bolt 12 with thread through the wear-resistant sleeve 10 corresponds to the position of the threaded hole 9 on the positioning block 8, thereby improving the convenience of installation.

[0029] Preferably, the outer wall of the wear-resistant sleeve 10 is provided with multiple anti-slip grooves 15, and the multiple anti-slip grooves 15 are distributed in a ring.

[0030] In practical use, the multiple annularly distributed anti-slip grooves 15 can increase the friction of the hand when the worker grasps the wear-resistant sleeve 10, thus preventing slippage.

[0031] Preferably, a shielding layer 2 is sleeved inside the sheath layer 1, a fireproof layer 3 is sleeved inside the shielding layer 2, an insulating layer 4 is provided inside the fireproof layer 3, and a conductor 5 is provided inside the insulating layer 4.

[0032] It is important to note that shielding layer 2 is made of copper. Copper has excellent conductivity, which can effectively transmit electrical signals and reduce signal attenuation and distortion. For high-speed data transmission cables, such as network cables and video cables, it can ensure high-quality signal transmission. Copper also has good corrosion resistance, which can resist the erosion of oxygen, moisture and some chemicals in the air, extending the service life of the cable. Furthermore, copper has a certain tensile strength and toughness, which can withstand a certain degree of mechanical stress such as tension, bending and torsion, making it less likely to break during installation and use, and facilitating cable laying and installation.

[0033] The fireproof layer 3 uses mica tape. Mica tape can maintain stable physical and chemical properties at high temperatures and can withstand flame temperatures of up to 1000℃ or more. It can effectively prevent the flame from spreading into the cable and protect the conductor 5 and insulation layer 4 from high temperature damage. At the same time, mica itself has good insulation properties, which can ensure electrical insulation during normal cable operation and prevent faults such as leakage and short circuit. Finally, mica tape has a certain degree of flexibility and can be tightly wrapped around the insulation layer 4 or conductor 5 of the cable to adapt to the bending and deformation of the cable. It will not break or fall off due to bending during cable laying and use, thus ensuring the integrity and reliability of the fireproof layer 3.

[0034] The insulation layer 4 is made of cross-linked polyethylene. Cross-linked polyethylene has high insulation resistance, low dielectric loss, and can withstand high working voltage. It is also less prone to partial discharge under high voltage, making it particularly suitable for high-voltage and ultra-high-voltage power cables. Its long-term operating temperature can reach 90℃, and its short-term overload temperature can withstand 130℃. It can maintain good insulation and mechanical properties even in high-temperature environments and is not prone to aging or damage due to heat. Finally, cross-linked polyethylene has high tensile strength and tear resistance, as well as good flexibility. It can withstand various mechanical stresses during cable laying and operation and is not prone to cracking or breakage.

[0035] The conductor 5 is made of multiple strands of fine copper or aluminum wires to increase the cable's flexibility, enabling it to adapt to complex laying environments and frequent bending. Thus, through the sheath layer 1, the copper shielding layer 2, the mica tape fireproof layer 3, the cross-linked polyethylene insulation layer 4, and the conductor 5 made of multiple strands of fine copper or aluminum wires, a highly flexible fireproof wire and cable can be formed.

[0036] Working principle: First, two annular grooves 6 are made on the outer wall of the end of the sheath layer 1. Then, connecting rings 7 are sleeved on the inner side of the grooves. Next, wear-resistant sleeve 10 is sleeved on the outer wall of the sheath layer 1, with the two connecting rings 7 located at the inner ends of the wear-resistant sleeve 10. At this time, the positioning block 8 will be located in the positioning groove 13. Then, the locking bolt 12 passes through the wear-resistant sleeve 10 and connects with the threaded hole 9 on the positioning block 8, so that the wear-resistant sleeve 10 can be installed at the end of the wire and cable. The wear-resistant sleeve 10 and the protruding wear-resistant protrusion 14 can protect the end during the pulling of the cable, thereby improving safety. Furthermore, the positioning block 8 and the positioning groove 13 can play a positioning role during the installation of the wear-resistant sleeve 10, so that the locking bolt 12 threaded through the wear-resistant sleeve 10 corresponds to the threaded hole 9 on the positioning block 8, thereby improving the convenience of installation.

[0037] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A highly flexible fire-resistant wire and cable structure, comprising a sheath layer (1), characterized in that: The outer wall of the sheath layer (1) has two annular grooves (6), and the two annular grooves (6) are provided with connecting rings (7). The outer wall of the connecting rings (7) is provided with four positioning blocks (8). The outer wall of the four positioning blocks (8) is provided with threaded holes (9). The outer wall of the sheath layer (1) is fitted with a wear-resistant sleeve (10). The outer wall of the wear-resistant sleeve (10) is provided with multiple grooves (11). The internal threads of the multiple grooves (11) are threaded through by locking bolts (12).

2. The highly flexible fire-resistant wire and cable structure according to claim 1, characterized in that: The inner wall of the wear-resistant sleeve (10) has four positioning grooves (13), and the four positioning grooves (13) are arranged in a ring.

3. The highly flexible fire-resistant wire and cable structure according to claim 1, characterized in that: The two connecting rings (7) are located at the inner ends of the wear-resistant sleeve (10).

4. The highly flexible fire-resistant wire and cable structure according to claim 2, characterized in that: The positioning block (8) is located inside the positioning groove (13).

5. The highly flexible fire-resistant wire and cable structure according to claim 1, characterized in that: The outer wall of the wear-resistant sleeve (10) is connected with a plurality of wear-resistant protrusions (14), and the plurality of wear-resistant protrusions (14) are arranged in a ring.

6. The highly flexible fire-resistant wire and cable structure according to claim 5, characterized in that: The outer wall of the wear-resistant sleeve (10) is provided with multiple anti-slip grooves (15), and the multiple anti-slip grooves (15) are arranged in a ring.

7. The highly flexible fire-resistant wire and cable structure according to claim 1, characterized in that: The sheath layer (1) is fitted with a shielding layer (2), the shielding layer (2) is fitted with a fireproof layer (3), the fireproof layer (3) is fitted with an insulating layer (4), and the insulating layer (4) is fitted with a conductor (5).

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