CN218996400U - Water-blocking overhead cable - Google Patents

Abstract

The utility model relates to the field of cables and discloses a water-blocking overhead cable, which comprises a copper core, wherein the outer wall of the copper core is connected with a buffer strip, the center of the copper core is connected with an elastic column, the elastic column is internally fixed with an elastic strip, the outer side wall of the copper core is sleeved with an insulating sleeve, the outer wall of the insulating sleeve is sleeved with a heat-resistant sleeve, the outer wall of the heat-resistant sleeve is sleeved with a bending sleeve, and the outer wall of the bending sleeve is sleeved with a wear-resistant sleeve; this kind of novel be applied to water blocking overhead cable, through setting up the cover of buckling, buckle the cover and can assist the holistic bending of cable, can conveniently buckle through the cover of buckling when the cable is crooked, and can laborsaving when buckling, and the outer wall can not produce the crack when crooked.

Description

Water-blocking overhead cable

Technical Field

The utility model relates to the field of cables, in particular to a water-blocking overhead cable.

Background

Although many cables are laid in an embedded manner, it is still common to erect cables in an outdoor overhead manner in environments where the cables cannot be embedded. The weather resistance requirements of the aerial cable such as water resistance are high due to long-term exposure to the environment.

In the prior art, as in patent CN205264392U, a waterproof overhead cable is proposed, which has a structure including a conductor, and an insulating layer is wrapped outside the conductor; the conductor is formed by twisting a plurality of metal monofilaments, and water-blocking yarns, water-blocking powder or water-blocking glue are filled in gaps among the metal monofilaments; the metal monofilaments are divided into multiple layers from inside to outside, and the twisting directions of two adjacent layers of metal monofilaments are opposite; the pitch diameter ratio of the conductor is not more than 14 times that of the outermost layer, and the rest layers are not more than 40 times. Compared with the prior art, the cable meets the requirements of the cable on electrical performance and the like, and is subjected to a longitudinal water blocking test: the method and conditions specified in appendix C of the ABNT-NBR11873 standard were performed with a water pressure equal to 10kPa and no water leakage through the edges of the sample gap occurred.

However, the strength of the cable is high, and the existing overhead cable is difficult to operate when being bent, and is easy to break at the bending position, so that the exposed internal cable is dangerous.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a water-blocking overhead cable, which at least solves one of the problems of the background art, so that the cable is easier to bend when being bent, and the outer wall is free from cracks.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a water blocking aerial cable, includes the copper core, the outer wall of copper core is connected with the buffer strip, the center of copper core is connected with the elastic column, elastic column internal fixation has the elastic strip, the lateral wall cover of copper core is equipped with insulating cover, the outer wall cover of insulating cover is equipped with heat resistant cover, the outer wall cover of heat resistant cover is equipped with the cover of buckling, the outer wall cover of buckling the cover is equipped with wear-resisting cover.

Further, the outer wall of the bending sleeve is provided with a plurality of bending grooves, and the bending grooves are equally arranged in interval.

Further, the bending part of the bending groove is provided with a round corner.

Further, the insulating sleeve is woven from glass fibers.

Further, the heat-resistant sleeve is made of a silicone rubber glass fiber sleeve.

Further, the bending sleeve is made of polyurethane elastomer.

Further, the wear-resistant sleeve is made of a high-strength rubber tube.

The embodiment of the utility model provides a water-blocking overhead cable, which has the following beneficial effects:

this kind of novel be applied to water blocking overhead cable, through setting up the cover of buckling, buckle the cover and can assist the holistic bending of cable, can conveniently buckle through the cover of buckling when the cable is crooked, and can laborsaving when buckling, and the outer wall can not produce the crack when crooked.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model.

FIG. 1 is a schematic view of an overall structure of the present utility model;

FIG. 2 is a schematic view of a buckle and bending groove structure according to the present utility model;

fig. 3 is an enlarged schematic view of the structure at a in fig. 1.

In the figure: 1. a copper core; 2. a buffer strip; 3. an elastic column; 4. an elastic strip; 5. an insulating sleeve; 6. a heat resistant jacket; 7. bending the sleeve; 8. a wear-resistant sleeve; 9. bending groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, a water-blocking overhead cable comprises a copper core 1, wherein a buffer bar 2 is connected to the outer wall of the copper core 1, an elastic column 3 is connected to the center of the copper core 1, an elastic bar 4 is fixed in the elastic column 3, an insulating sleeve 5 is sleeved on the outer side wall of the copper core 1, a heat-resistant sleeve 6 is sleeved on the outer wall of the insulating sleeve 5, a bending sleeve 7 is sleeved on the outer wall of the heat-resistant sleeve 6, and a wear-resistant sleeve 8 is sleeved on the outer wall of the bending sleeve 7.

Specific working principle and implementation mode: in the prior art, an overhead cable such as the overhead cable in the patent number CN205264392U is inconvenient to operate due to harder cable bending; can solve above-mentioned problem through this design, be connected with buffer bar 2 at the outer wall of copper core 1, the center of copper core 1 is connected with elastic column 3, elastic column 3 internal fixation has elastic strip 4, and the outer wall cover at copper core 1 is equipped with insulating cover 5, the outer wall cover of insulating cover 5 is equipped with heat-resistant cover 6, the outer wall cover of heat-resistant cover 6 is equipped with the cover 7 of buckling, can make things convenient for the holistic buckling of cable through the cover 7 of buckling, make it buckle less hard, be equipped with wear-resisting cover 8 at the outer wall cover of buckling the cover 7 and can increase the wearability of outer wall.

As shown in fig. 2, the outer wall of the bending sleeve 7 is provided with a plurality of bending grooves 9, the intervals are equal, the outer wall of the bending sleeve 7 is provided with the bending grooves 9, and the bending can be performed through the gaps of the bending grooves 9 when the whole cable is bent, so that the bending is labor-saving, and no crack is generated outside.

As shown in fig. 2, the bending portion of the bending groove 9 is a rounded corner, and the bending portion of the bending groove 9 is a rounded corner so as to reduce the external crack generated by the rounded corner when bending.

As shown in fig. 3, the insulating sleeve 5 is made of glass fiber, and the glass fiber is a common insulating material, and the insulating sleeve 5 made of glass fiber can achieve good insulating effect.

As shown in fig. 3, the heat-resistant sleeve 6 is made of a silicone rubber glass fiber sleeve, which is a heat-resistant material commonly used at present, and the heat-resistant sleeve 6 can achieve good heat-resistant effect through the silicone rubber glass fiber sleeve.

As shown in fig. 3, the bending sleeve 7 is made of polyurethane elastomer, which is a manufacturing material with toughness commonly used at present, and the bending sleeve 7 is made of polyurethane elastomer so as to be not easy to break when the cable is laid and bent.

As shown in fig. 3, the wear-resistant sleeve 8 is made of a high-strength rubber tube, the density of the high-strength rubber tube is higher than that of a normal rubber tube, and the wear-resistant sleeve 8 can play a better wear-resistant effect through the high-strength rubber tube.

The present utility model is not limited to the above embodiments, but is capable of modification and variation in all aspects, including those of ordinary skill in the art, without departing from the spirit and scope of the present utility model.

Claims (7)

1. The utility model provides a water blocking overhead cable, includes copper core (1), its characterized in that, the outer wall of copper core (1) is connected with buffer bar (2), the center of copper core (1) is connected with elastic column (3), elastic column (3) internal fixation has elastic strip (4), the lateral wall cover of copper core (1) is equipped with insulating cover (5), the outer wall cover of insulating cover (5) is equipped with heat resistant cover (6), the outer wall cover of heat resistant cover (6) is equipped with and buckles cover (7), the outer wall cover of buckling cover (7) is equipped with wear-resisting cover (8).

2. The water-blocking overhead cable according to claim 1, wherein the outer wall of the bending sleeve (7) is provided with a plurality of bending grooves (9), and the bending grooves (9) are equally spaced.

3. A water-blocking overhead cable according to claim 2, characterized in that the bending position of the bending groove (9) is a rounded corner.

4. A water-resistant overhead cable according to claim 1, 2 or 3, characterized in that the insulating sheath (5) is woven from glass fibres.

5. A water-resistant overhead cable according to claim 1, 2 or 3, characterized in that the heat-resistant jacket (6) is made of a silicone rubber glass fiber sleeve.

6. A water-blocking overhead cable according to claim 1, 2 or 3, characterized in that the bending jacket (7) is made of polyurethane elastomer.

7. A water-blocking overhead cable according to claim 1, 2 or 3, characterized in that the wear sleeve (8) is made of a high-strength rubber tube.

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