CN201673700U

CN201673700U - Aerial cable

Info

Publication number: CN201673700U
Application number: CN2010201870377U
Authority: CN
Inventors: 高元松
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-05-12
Filing date: 2010-05-12
Publication date: 2010-12-15
Anticipated expiration: 2020-05-12

Abstract

An aerial cable relates to the field of cables and solves the defects that the existing aerial cable is poor in firmness, and easy to protrude in the shoulder, pop up or float. An aerial cable is provided and comprises a conductor, a cable core formed by an insulating layer, a polyolefin filled layer, a lapped covering and an outer jacket layer, wherein the insulating layer covers the outside of the conductor to form the cable core; the lapped covering covers the outside of the cable core; and the cable core in the lapped covering is filled with the polyolefin filled layer to form the cable, and in the cable, the cross section of the conductor covered with the outer jacket layer is a circle or sector; and the inner wall of the outer jacket layer is provided with a groove that is distributed around the cable spirally. By adopting the outer jacket layer, the inner wall of which is provided with the groove, the aerial cable effectively diffuses tension, avoids damage caused by excessive local tension and prevents stranded conductor bundles from popping up or floating and the like. With the same material and in the same use situation, the durability of the aerial cable is 1.2-1.5 times that of the aerial cable in the prior art.

Description

Aerial cable

Technical field

The utility model relates to field of cables, a kind of aerial cable of more specifically saying so.

Background technology

Along with the mankind to preserving the ecological environment and the pay attention to day by day of self health, the security performance of cable has been proposed higher more fully requirement.

Because the needs of transmission, most of cable can't be sleeved on and be installed in the pipeline in underground or the building, but need be erected at aerial, this aerial cable is influenced by Changes in weather, environmental impact, and influences such as weight of self and erection mode, damage easily, influence safety.The factor that influences coefficient of safety is a lot, as the stress of hitch point stress greater than the sag minimum point, compensation elongation just needs to increase stress, produces additional stress during vibration and disconnected burst of back overhead wire intensity reduces, because of the burn into crush injury cause intensity to reduce and design, construction in error or the like.

Get rid of of the influence of uncontrollable factors such as Changes in weather and environment to aerial cable, the tension force that how to disperse cable self to produce, the firmness of increase cable reduces phenomenons such as shoulder protrusion, ejection or flotation line as far as possible, is the prior art urgent problem.

The utility model content

Poor in order to overcome existing aerial cable firmness, the deficiency of phenomenons such as protrusion, ejection or flotation line is takeed in generation easily, and the purpose of this utility model is: a kind of aerial cable is provided,

The technical scheme that its technical problem that solves the utility model adopts is as follows: a kind of aerial cable, and it comprises conductor, the cable core that insulating barrier constitutes, polyolefin packed layer, lapping layer, external sheath layer; Insulating barrier is wrapped in conductor and forms cable core outward, and lapping layer is wrapped in outside the cable core, and filled polyolefin packed layer between the cable core forms cable in the lapping layer, and cable is circular or fan-shaped by the cross section that external sheath layer wraps up described conductor.

Described external sheath layer inner wall belt is fluted, and external sheath layer is wrapped in outside the cable, just forms groove around the cable state that distributes of shape in the shape of a spiral.

Described recess width is 1-10mm, and the degree of depth is 0.2-3mm; The groove cross section is a regular shape, and is trapezoidal as rectangle, V-arrangement, semicircle, arc; Preferred arc, semicircle.

Described recess width is 1.5-5mm, and the degree of depth is 0.5-2mm.

Described recess width is 3mm, and the degree of depth is 1.5mm.

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

The utility model provides a kind of aerial cable, adopt the reeded external sheath layer of inner wall belt, disperse tension force effectively, the damage of avoiding local overtension to cause, prevent phenomenons such as the ejection of stranded conductor bundle and flotation line, under equivalent material and equal operating position, durability is 1.2-1.5 a times of prior art aerial cable.Especially working as described recess width is 3mm, and when the degree of depth was 1.5mm, performance reached optimum state.

Description of drawings

Fig. 1 is the structural representation of the utility model aerial cable;

Fig. 2 is that the utility model aerial cable external sheath layer inwall launches schematic diagram;

Fig. 3 is that external sheath layer launches the cross section schematic diagram.

Embodiment

Below in conjunction with drawings and Examples the utility model is further specified, but not as to qualification of the present utility model.

See also the embodiment of the utility model aerial cable shown in Fig. 1-3, it comprises conductor 1, the cable core that insulating barrier 2 constitutes, polyolefin packed layer 3, lapping layer 4, external sheath layer 5; Insulating barrier 2 is wrapped in the conductor 1 outer cable core that forms, and lapping layer 4 is wrapped in outside the cable core, and filled polyolefin packed layer 3 between the cable core forms cable in the lapping layer 4, and cable is by external sheath layer 5 parcels.

Described external sheath layer inner wall belt is fluted 6, and groove 6 is wavy, around cable in the shape of a spiral shape distribute.

Above-described embodiment, the utility model embodiment a kind of more preferably just, the common variation that those skilled in the art carries out in the technical solutions of the utility model scope and replacing all should be included in the protection range of the present utility model.

Claims

1. aerial cable, it is characterized in that: it comprises conductor, the cable core that insulating barrier constitutes, polyolefin packed layer, lapping layer, external sheath layer; Insulating barrier is wrapped in conductor and forms cable core outward, and lapping layer is wrapped in outside the cable core, and filled polyolefin packed layer between the cable core forms cable in the lapping layer, and cable is wrapped up by external sheath layer.

2. aerial cable according to claim 1 is characterized in that: described external sheath layer inner wall belt is fluted, and it is wavy that groove is.

3. aerial cable according to claim 2 is characterized in that: described recess width is 1-10mm, and the degree of depth is 0.2-3mm; Described groove cross section is a regular shape.

4. aerial cable according to claim 3 is characterized in that: described groove cross section is rectangle, and is trapezoidal, V-arrangement, semicircle, any one in the arc.

5. aerial cable according to claim 3 is characterized in that: described groove cross section is arc or semicircle.

6. aerial cable according to claim 3 is characterized in that: described recess width is 1.5-5mm, and the degree of depth is 0.5-2mm.

7. aerial cable according to claim 6 is characterized in that: described recess width is 3mm, and the degree of depth is 1.5mm.

8. aerial cable according to claim 2 is characterized in that: described groove is around cable shape distribution in the shape of a spiral.