Fireproof and moistureproof subway cable

Abstract

The utility model provides a fireproof and moistureproof subway cable, and relates to the field of cables. The fireproof and moistureproof subway cable comprises a cable body and a wire core body, connecting mechanisms are arranged at the two ends of the cable body, each connecting mechanism comprises a fixing sleeve shell, a connecting convex block and a connecting concave block, and an insulating block for limiting the connecting convex block and the connecting concave block is fixedly connected into the fixing sleeve shell. A protection mechanism is arranged on the surface of the fixing sleeve shell and comprises a second fastening sleeve and a moisture-proof ring. According to the fire-resistant and moisture-proof subway cable, the two groups of cable core bodies are connected together through the connecting convex blocks and the connecting concave blocks, the insulating blocks are fixed through the fixing sleeve shells, the multiple groups of connecting blocks are separated through the insulating blocks, the two fixing sleeve shells are fixed together through the second fastening sleeve, and the two fixing sleeve shells are fixed through the moisture-proof ring. Gaps between the fixing sleeve shells are protected, the cables are prevented from being corroded by external moisture, and the safety of cable joints is improved.

Description

Technical Field

[0001] The utility model relates to a fire-resistant and moisture-proof cable, in particular to a fire-resistant and moisture-proof cable for subways, belonging to the technical field of cables. Background Art

[0002] A cable is a device for transmitting electrical energy or signals, typically consisting of several or several groups of conductors, that transmits power or information from one location to another. It is typically a rope-like cable made of several or several groups of conductors twisted together. Each group of conductors is insulated from each other and often twisted around a core. The entire cable is covered with a highly insulating coating. Cables are characterized by internal conduction and external insulation.

[0003] Patent No. CN216435496U discloses a waterproof, rat-proof, mosquito-proof DC cable for subways. This utility model relates to the field of cable technology and aims to address the technical problem of short circuits caused by cable damage from insects such as rats and mosquitoes. The key technical aspects of the solution are: a cable body, an inner sheath, and an outer sheath. The outer sheath is sheathed with a metal anti-bite layer, which is provided with a plurality of metal anti-bite spikes. These spikes include short and tall spikes, each staggered around the center of the cable body. The outer wall of the metal anti-bite layer is provided with a safety layer, the inner wall of which is provided with several grooves for the short and tall spikes. The purpose of this utility model is to provide a DC cable for subways that is resistant to insect bites, thereby preventing short circuits.

[0004] When the subway is running, cables are used to ensure the normal operation of electricity and communications. Although the cables in the above patents can prevent mosquito bites, the cable construction is relatively concealed, which is cumbersome during maintenance and disassembly. In addition, since the underground is relatively humid, water easily enters the cable connection, causing cable connection failure. Therefore, we provide a fire-resistant and moisture-proof subway cable to solve the above problems. Utility Model Content

[0005] The purpose of the present utility model is to provide a fire-resistant and moisture-proof subway cable in order to solve the above problems, so as to solve the problem of poor moisture-proof ability of cable connections in the prior art.

[0006] The utility model is realized through the following technical solutions: a fire-resistant and moisture-proof subway cable.

[0007] It includes a cable body and a wire core body fixed inside the cable body. Connecting mechanisms are provided at both ends of the cable body. The connecting mechanisms include a fixed sleeve, a connecting protrusion and a connecting recess. The interior of the fixed sleeve is fixedly connected to an insulating block with limited connecting protrusions and connecting recesses. The surface of the fixed sleeve is provided with a protective mechanism. The protective mechanism includes a second fastening sleeve and a moisture-proof ring, and the moisture-proof ring is sleeved on the surface of the insulating block.

[0008] Preferably, the connecting protrusion and the connecting recess are respectively fixed at one end of the two wire core bodies, and the connecting protrusion is clamped with the connecting recess. The connecting protrusion and the connecting recess are respectively sleeved inside the two insulating blocks, and the two groups of wire core bodies are connected together by inserting the connecting protrusion into the connecting recess.

[0009] Preferably, an insulating pad is fixedly connected to the surface of the insulating block, and the surface of the insulating pad is in conflict with another insulating block. A sealing pad is fixedly connected to the inside of the fixed sleeve, and the sealing pad is in conflict with the surface of the cable body. The insulating pad is used to seal the gap between the two insulating blocks, thereby improving the effect of the insulating blocks in blocking the wire cores.

[0010] Preferably, the surface of the fixing housing is fixedly connected with circumferentially arranged fastening clamping rods, and the surface of the fastening clamping rods is threadedly connected with a first fastening sleeve. By rotating the first fastening sleeve, the fastening clamping rods are brought close to the surface of the cable body, thereby fixing the fixing housing and the cable body together.

[0011] Preferably, a fixing block is fixedly connected to the interior of the fastening clamp rod, and the fixing block is clamped with the surface of the cable body. The fixing block is inserted into the interior of the cable body to improve the fixing ability of the fixing sleeve.

[0012] Preferably, the surfaces of the two fixed sleeves are respectively fixedly connected with a fixing ring and a threaded ring, the second fastening sleeve is slidingly connected to the fixing ring, and the second fastening sleeve is threadedly connected to the threaded ring, and the second fastening sleeve is rotated on the surface of the threaded ring, and the two fixed sleeves are pulled closer to each other by the fixing ring.

[0013] Preferably, a limiting ring is clamped on the surface of the second fastening sleeve, and the limiting ring and the fixed sleeve are in conflict with each other. A shielding ring is fixedly connected to the surface of the moisture-proof ring, and the two ends of the shielding ring are respectively fixedly connected to the two fixed sleeves. The limiting ring prevents moisture from entering through the gap between the second fastening sleeve and the fixed ring.

[0014] Preferably, the outer portion of the second fastening sleeve is provided with a fire-resistant pad, and both ends of the fire-resistant pad are in contact with the surfaces of the two cable bodies respectively. The fire-resistant pad seals the device and enhances the fire resistance of the cable connection.

[0015] The utility model provides a kind of fireproof damp-proof cable for subway, it has the beneficial effects as follows:

[0016] The fireproof damp-proof cable for subway, two cable bodies are connected together by connecting convex block and connecting concave block, then the safety and stability of cable connection are improved by fixing sleeve, insulating block, multiple connecting blocks are isolated by insulating block, arc penetration line core is avoided to cause circuit connection, two fixed sleeves are connected together by second fastening sleeve, the gap between two fixed sleeves is shielded and protected by moisture-proof ring, external humid air is avoided to enter to cause wire corrosion, and the safety of cable connection is improved.

[0017] The fireproof damp-proof cable for subway, two cable bodies are connected together by connecting convex block and connecting concave block, then the safety and stability of cable connection are improved by fixing sleeve, insulating block, multiple connecting blocks are isolated by insulating block, arc penetration line core is avoided to cause circuit connection, two fixed sleeves are connected together by second fastening sleeve, the gap between two fixed sleeves is shielded and protected by moisture-proof ring, external humid air is avoided to enter to cause wire corrosion, and the safety of cable connection is improved.

[0018] The fireproof damp-proof cable for subway, the fixing ability of fixed sleeve is improved by fixed clamping block, fixed sleeve is avoided to separate from cable body when the device is used, two fixed sleeves are close to each other under the pulling of fixed ring by rotating second fastening sleeve on the surface of thread ring, the connecting ability of connecting convex block and connecting concave block is improved, and the sealing performance of the device is improved, the connecting place of second fastening sleeve and fixed sleeve is sealed by limiting ring, moisture is avoided to enter through the gap between second fastening sleeve and fixed ring, the moisture-proof ability of the device is improved, the device is sealed and fixed by fireproof pad, the fireproof performance of connecting place can be enhanced, and the sealing performance of connecting place can be enhanced. ACCURACY OF DRAWINGS

[0019] Figure 1 It is the whole structure schematic view of the utility model;

[0020] Figure 2 It is the whole structure cross-sectional schematic view of the utility model;

[0021] Figure 3 It is the internal structure schematic view of the utility model insulating block;

[0022] Figure 4 It is the fastening clamp rod connecting structure schematic view of the utility model;

[0023] Figure 5 It is the protection mechanism structure schematic view of the utility model.

[0024]

Main component symbol description

[0025] 1. Cable body; 2. Wire core body;

[0026] 3. Connecting mechanism; 301. Fixed housing; 302. Fastening clamping rod; 303. Fixed clamping block; 304. First fastening sleeve; 305. Sealing gasket; 306. Insulating block; 307. Connecting protrusion; 308. Connecting concave block; 309. Insulating cushion;

[0027] 4. Protection mechanism; 401. Second fastening sleeve; 402. Threaded ring; 403. Fixing ring; 404. Limiting ring; 405. Shielding ring; 406. Moisture-proof ring; 407. Refractory pad. DETAILED DESCRIPTION

[0028] The embodiment of the utility model provides a fire-resistant and moisture-proof subway cable.

[0029] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , including a cable body 1 and a wire core body 2 fixed inside the cable body 1, a connecting mechanism 3 is provided at both ends of the cable body 1, the connecting mechanism 3 includes a fixed shell 301, a connecting protrusion 307 and a connecting recessed block 308, the internal fixed connection of the fixed shell 301 is fixed with an insulating block 306 with limited connecting protrusions 307 and connecting recessed blocks 308, the two groups of wire core bodies 2 are connected together by the connecting protrusions 307 and the connecting recessed blocks 308, and then the two cable bodies 1 are connected together, the insulating block 306 is fixed by the fixed shell 301, and the multiple groups of connecting blocks are isolated by the insulating block 306 to prevent the arc from penetrating the wire core and causing the circuit to overlap together, causing circuit abnormalities, thereby improving the safety and stability of the cable connection.

[0030] The connecting protrusion 307 and the connecting recess 308 are respectively fixed on one end of the two core bodies 2, and the connecting protrusion 307 is clamped with the connecting recess 308. The connecting protrusion 307 and the connecting recess 308 are respectively arranged inside the two insulating blocks 306. The connecting protrusion 307 is inserted into the connecting recess 308 to connect the connecting protrusion 307 and the connecting recess 308, thereby connecting the two core bodies 2 together. The insulating block 306 is used to separate multiple groups of connecting protrusions 307 and connecting recesses 308.

[0031] An insulating pad 309 is fixedly connected to the surface of the insulating block 306, and the surface of the insulating pad 309 is in conflict with another insulating block 306. A sealing gasket 305 is fixedly connected to the inside of the fixed shell 301, and the sealing gasket 305 is in conflict with the surface of the cable body 1. The insulating gasket 309 is used to seal the gap between the two insulating blocks 306, thereby improving the effect of the insulating block 306 in blocking the wire core and preventing external humid air from contacting or corroding the wire core. The sealing gasket 305 is used to fill the fixed shell 301, so that the fixed shell 301 and the cable body 1 are more tightly connected.

[0032] The surface of the fixed shell 301 is fixedly connected with circumferentially arranged fastening clamping rods 302, and the surface of the fastening clamping rods 302 is threadedly connected with a first fastening sleeve 304. By rotating the first fastening sleeve 304, the fastening clamping rods 302 are brought close to the surface of the cable body 1, thereby fixing the fixed shell 301 and the cable body 1 together.

[0033] The interior of the fastening clamp rod 302 is fixedly connected to a fixed block 303, and the fixed block 303 is clamped with the surface of the cable body 1. When the fastening clamp rod 302 is close to the cable body 1, the fixed block 303 is inserted into the interior of the cable body 1. The fixed block 303 improves the fixing ability of the fixed shell 301, thereby preventing the fixed shell 301 from separating from the cable body 1 when the device is in use.

[0034] Please refer again Figure 2 and Figure 5 A protective mechanism 4 is provided on the surface of the fixed shell 301. The protective mechanism 4 includes a second fastening sleeve 401 and a moisture-proof ring 406. The moisture-proof ring 406 is sleeved on the surface of the insulating block 306. The two fixed shells 301 are connected together through the second fastening sleeve 401. The moisture-proof ring 406 blocks and protects the gap between the two fixed shells 301 to prevent external humid air from entering and causing corrosion of the wires, thereby improving the safety of the cable connection.

[0035] The surfaces of the two fixed sleeves 301 are respectively fixedly connected with a fixing ring 403 and a threaded ring 402. The second fastening sleeve 401 is slidingly connected to the fixing ring 403, and the second fastening sleeve 401 is threadedly connected to the threaded ring 402. By rotating the second fastening sleeve 401 on the surface of the threaded ring 402, the two fixed sleeves 301 are pulled closer to each other by the fixing ring 403, which can not only improve the connection ability of the connecting protrusion 307 and the connecting concave block 308, but also improve the sealing performance of the device.

[0036] The surface of the second fastening sleeve 401 is clamped with a limiting ring 404, and the limiting ring 404 and the fixed housing 301 are in conflict with each other. The surface of the moisture-proof ring 406 is fixedly connected to a shielding ring 405, and the two ends of the shielding ring 405 are respectively fixedly connected to the two fixed housings 301. The limiting ring 404 is used to seal the connection between the second fastening sleeve 401 and the fixed housing 301 to prevent moisture from entering through the gap between the second fastening sleeve 401 and the fixed ring 403, thereby improving the moisture-proof ability of the device. The shielding ring 405 is used to shield the information and current transmitted by the cable, thereby reducing the impact of current transmission on the external environment and improving the stability and safety of cable transmission.

[0037] The outer sleeve of the second fastening sleeve 401 is provided with a fire-resistant pad 407, and the two ends of the fire-resistant pad 407 are respectively in contact with the surfaces of the two cable bodies 1. The device is sealed and fixed by the fire-resistant pad 407, which can enhance the fire resistance of the connection and the sealing performance of the connection.

[0038] When the utility model is in use, first, the connecting protrusion 307 and the connecting concave block 308 are sleeved on one end of the two sets of wire core bodies 2 to be connected, and then the connecting protrusion 307 and the connecting concave block 308 are pressurized by the pressure clamp to make the connection between the connecting protrusion 307 and the connecting concave block 308 and the wire core body 2 more firmly connected, and then the fixing sleeve 301 is sleeved on the surface of the cable body 1, and the connecting protrusion 307 or the connecting concave block 308 passes through the corresponding hole of the insulating block 306, and the first fastening sleeve 304 is rotated to make the fastening clamp rod 302 close to the cable body 1, and the fixing block 303 is squeezed into the interior of the cable body 1 to fix the fixing sleeve 301, and the gap between the fixing sleeve 301 and the cable body 1 is filled by the sealing gasket 305, and then the moisture-proof ring 406 is sleeved on the insulating Block 306 surface, dock the two fixed sleeves 301, insert the connecting protrusion 307 into the connecting recess 308, and then connect the two core bodies 2 together, rotate the second fastening sleeve 401, and make the two fixed sleeves 301 close to each other, which can not only improve the connection ability of the connecting protrusion 307 and the connecting recess 308, but also improve the sealing performance of the device, and then insert the limiting ring 404 into the gap between the second fastening sleeve 401 and the fixed sleeve 301 to seal the second fastening sleeve 401, and then wrap the fire-resistant pad 407 on the surface of the connection to seal the connection. Through the above device, the fire resistance and moisture resistance of the cable can be improved, the safety and stability of the cable in the subway environment can be improved, and the inspection and maintenance of the cable are convenient, thereby improving the efficiency of cable maintenance.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A fire-resistant and moisture-proof subway cable, comprising a cable body (1) and a wire core body (2) fixed inside the cable body (1), characterized in that: Both ends of the cable body (1) are provided with connecting mechanisms (3), the connecting mechanisms (3) comprising a fixed housing (301), a connecting protrusion (307) and a connecting recess (308), the interior of the fixed housing (301) is fixedly connected to an insulating block (306) with a limited connecting protrusion (307) and a connecting recess (308), the surface of the fixed housing (301) is provided with a protective mechanism (4), the protective mechanism (4) comprising a second fastening sleeve (401) and a moisture-proof ring (406), and the moisture-proof ring (406) is sleeved on the surface of the insulating block (306).

2. The fire-resistant and moisture-proof subway cable according to claim 1, characterized in that: The connecting protrusion (307) and the connecting concave block (308) are respectively fixed to one end of the two wire core bodies (2), and the connecting protrusion (307) and the connecting concave block (308) are clamped together. The connecting protrusion (307) and the connecting concave block (308) are respectively sleeved inside the two insulating blocks (306).

3. The fire-resistant and moisture-proof subway cable according to claim 1, characterized in that: An insulating pad (309) is fixedly connected to the surface of the insulating block (306), and the surface of the insulating pad (309) is in conflict with another insulating block (306). A sealing pad (305) is fixedly connected to the interior of the fixed housing (301), and the sealing pad (305) is in conflict with the surface of the cable body (1).

4. The fire-resistant and moisture-proof subway cable according to claim 1, characterized in that: The surface of the fixed housing (301) is fixedly connected to circumferentially arranged fastening clamping rods (302), and the surface of the fastening clamping rods (302) is threadedly connected to a first fastening sleeve (304).

5. The fire-resistant and moisture-proof subway cable according to claim 4, characterized in that: A fixed clamping block (303) is fixedly connected to the interior of the fastening clamping rod (302), and the fixed clamping block (303) is clamped to the surface of the cable body (1).

6. The fire-resistant and moisture-proof subway cable according to claim 1, characterized in that: A fixing ring (403) and a threaded ring (402) are fixedly connected to the surfaces of the two fixing sleeves (301), respectively; the second fastening sleeve (401) is slidably connected to the fixing ring (403), and the second fastening sleeve (401) is threadedly connected to the threaded ring (402).

7. The fire-resistant and moisture-proof subway cable according to claim 1, characterized in that: The surface of the second fastening sleeve (401) is clamped with a limiting ring (404), and the limiting ring (404) and the fixed housing (301) are in conflict with each other. The surface of the moisture-proof ring (406) is fixedly connected with a shielding ring (405), and both ends of the shielding ring (405) are respectively fixedly connected to the two fixed housings (301).

8. The fire-resistant and moisture-proof subway cable according to claim 1, characterized in that: The exterior of the second fastening sleeve (401) is provided with a fire-resistant pad (407), and both ends of the fire-resistant pad (407) respectively contact the surfaces of the two cable bodies (1).

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