CN209993376U - Fire-resistant damp-proof cable for subway - Google Patents

Abstract

The utility model discloses a fire-resistant and moisture-proof subway cable, which comprises an outer sheath, wherein an inner sheath is arranged inside the outer sheath, a fire-resistant layer is arranged inside the inner sheath, a moisture-resistant layer is arranged inside the fire-resistant layer, an inner liner is arranged inside the moisture-resistant layer, a filling layer is arranged inside the inner liner, an insulating layer is arranged inside the filling layer, a conductor is arranged inside the insulating layer, a groove is arranged on the outer sheath, absorbent cotton is arranged inside the groove, a cutting sleeve is sleeved outside the outer sheath, connecting blocks are fixedly connected with both ends of the cutting sleeve, and mounting holes are arranged on both the connecting blocks. Then the water is absorbed by the absorbent cotton in the groove, and the waterproof effect is achieved.

Description

Fire-resistant damp-proof cable for subway

Technical Field

The utility model relates to the technical field of cables, specifically be a fire-resistant damp-proofing cable for subway.

Background

Cables are generally rope-like cables made by stranding several wires or groups of wires, each group insulated from the other and often twisted around a center, the entire outer surface being covered with a highly insulating covering. Many cables are installed in the air or underground or underwater for telecommunication or power transmission, and the cables are classified into power cables, communication cables, control cables, etc. according to their uses. Compared with an overhead line, the cable has the advantages of small insulating distance between lines, small occupied space, no occupation of space above the ground due to underground laying, no influence of pollution of the surrounding environment, high power transmission reliability, and small interference on personal safety and the surrounding environment. But the cost is high, the construction and the maintenance are troublesome, and the manufacture is complicated. Therefore, the cable is mostly applied to dense areas of population and power grids and places with heavy traffic.

However, existing cables have some drawbacks. For example, the existing cable is inconvenient to fix, is easy to trip people when being placed on the ground, has poor waterproof effect and is easy to damage the cable. Therefore, a fire-resistant and moisture-proof cable for the subway is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fire-resistant damp-proofing cable for subway, through set up the recess on the overcoat, can be with the leading-in recess of water on the oversheath in, prevent that adnexed water from damaging the cable on the oversheath, then absorb moisture through the cotton that absorbs water in the recess futilely, waterproof effect has been played, and through registing the cutting ferrule on the cable, then the mounting hole on the connecting block through the cutting ferrule both ends, fix the cable in suitable position, prevent that the cable from placing on the ground, stumble the personnel of walking easily, the problem that proposes among the background art has been solved.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a fire-resistant damp-proofing cable for subway, includes the oversheath, the inside of oversheath is provided with the inner sheath, the internally mounted of inner sheath has the flame retardant coating, the inside of flame retardant coating is provided with the dampproof course, the inside of dampproof course is provided with the inner liner, the inside of inner liner is provided with the filling layer, the inside of filling layer is provided with the insulating layer, the inside of insulating layer is provided with the conductor, set up flutedly on the oversheath, the inside of recess is provided with the cotton that absorbs water, the outside registrated cutting ferrule of oversheath, the equal fixedly connected with connecting block in both ends of cutting ferrule, two the mounting hole has all been seted up on the.

As a preferred embodiment of the present invention, the inner surface wall of the ferrule is provided with a rubber layer.

As a preferred embodiment of the present invention, the grooves are provided with eight grooves, and the eight grooves are annularly distributed.

As a preferred embodiment of the present invention, the ferrule is a hollow cylinder structure.

As a preferred embodiment of the present invention, the connecting block has a zigzag structure.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a fire-resistant damp-proofing cable for subway through set up the recess on the oversheath, can be with the leading-in recess of water on the oversheath in, prevent that adnexed water from damaging the cable on the oversheath, then absorb moisture through the cotton of absorbing water in the recess futilely, played waterproof effect.

2. The utility model discloses a fire-resistant damp-proofing cable for subway through registrates the cutting ferrule on the cable, then through the mounting hole on the connecting block at cutting ferrule both ends, fixes the cable in suitable position, prevents that the cable from placing on the ground, stumbles the personnel of walking easily.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a cross-sectional view of the fire-resistant and moisture-proof subway cable of the present invention;

fig. 2 is a front view of the fire-resistant and moisture-proof subway cable of the present invention;

fig. 3 is the utility model discloses the structure schematic diagram of the cutting ferrule of fire-resistant damp-proofing cable for the subway.

In the figure: the cable comprises an outer sheath 1, an inner sheath 2, a fireproof layer 3, a damp-proof layer 4, an inner liner 5, an insulating layer 6, a filling layer 7, a conductor 8, a groove 9, a water absorption cotton 10, a cutting sleeve 11, a mounting hole 12, a connecting block 13 and a rubber layer 14.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a fire-resistant damp-proofing cable for subway, including oversheath 1, the inside of oversheath 1 is provided with inner sheath 2, the internally mounted of inner sheath 2 has flame retardant coating 3, the inside of flame retardant coating 3 is provided with dampproof course 4, the inside of dampproof course 4 is provided with inner liner 5, the inside of inner liner 5 is provided with filling layer 7, the inside of filling layer 7 is provided with insulating layer 6, the inside of insulating layer 6 is provided with conductor 8, the last recess 9 of having seted up of oversheath 1, the inside of recess 9 is provided with cotton 10 that absorbs water, oversheath 1's outside registrates cutting ferrule 11, the equal fixedly connected with connecting block 13 in both ends of cutting ferrule 11, mounting hole 12 has all been seted.

In this embodiment (see fig. 3), the inner surface wall of the ferrule 11 is provided with a rubber layer 14.

In this embodiment (see fig. 1), eight grooves 9 are formed, and the eight grooves 9 are annularly distributed.

In this embodiment (see fig. 3), the ferrule 11 is a hollow cylinder structure.

In this embodiment (see fig. 3), the connecting block 13 has a zigzag structure.

It should be noted that the utility model relates to a fire-resistant and moisture-proof cable for subway, which comprises an outer sheath 1, an inner sheath 2, a fire-resistant layer 3, a moisture-proof layer 4, an inner liner layer 5, an insulating layer 6, a filling layer 7, a conductor 8, a groove 9, absorbent cotton 10, a cutting ferrule 11, a mounting hole 12, a connecting block 13, a rubber layer 14, all of which are universal standard parts or parts known by technicians in the field, the structure and principle of which can be known by technical manuals or by conventional test methods, when the fire-resistant and moisture-proof cable for subway is used, an operator can firstly sleeve the cutting ferrule 11 on the cable, then fix the cable at a proper position through the mounting holes 12 on the connecting blocks 13 at the two ends of the cutting ferrule 11, prevent the cable from being placed on the ground and easily tripping the walking personnel, the groove 9 on the outer sheath 1 can lead water on the outer sheath 1 into the groove 9, prevent that adnexed water from damaging the cable on oversheath 1, then absorb moisture through the cotton 10 that absorbs water in the recess 9 futilely, played waterproof effect, flame retardant coating 3 has increased the refractiveness of cable, and dampproof course 4 prevents the inside humidity of cable, influences the normal use of cable, and insulating layer 6 can prevent that conductor 8 and adjacent conductor 8 from electrically conducting.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (5)

1. The utility model provides a fire-resistant dampproofing cable for subway, includes oversheath (1), its characterized in that: the utility model discloses a waterproof thermal insulation protective sleeve, including oversheath (1), the inside of oversheath (1) is provided with inner sheath (2), the internally mounted of inner sheath (2) has flame retardant coating (3), the inside of flame retardant coating (3) is provided with dampproof course (4), the inside of dampproof course (4) is provided with inner liner (5), the inside of inner liner (5) is provided with filling layer (7), the inside of filling layer (7) is provided with insulating layer (6), the inside of insulating layer (6) is provided with conductor (8), seted up recess (9) on oversheath (1), the inside of recess (9) is provided with cotton (10) that absorbs water, cutting ferrule (11) have been registrated to the outside of oversheath (1), the equal fixedly connected with connecting block (13) in both ends of cutting ferrule (11), two mounting hole (12) have all been seted up on.

2. The fire-resistant and moisture-proof subway cable according to claim 1, wherein: the inner surface wall of the cutting sleeve (11) is provided with a rubber layer (14).

3. The fire-resistant and moisture-proof subway cable according to claim 1, wherein: eight grooves (9) are arranged, and the eight grooves (9) are distributed in an annular shape.

4. The fire-resistant and moisture-proof subway cable according to claim 1, wherein: the cutting sleeve (11) is of a hollow cylindrical structure.

5. The fire-resistant and moisture-proof subway cable according to claim 1, wherein: the connecting block (13) is of a Z-shaped structure.

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