A kind of anti-electric heating cable excessively for automatically forming heat dissipation wind channel
Technical field
The present invention relates to field of cable technology more particularly to a kind of anti-electric heating cables excessively for automatically forming heat dissipation wind channel.
Background technology
It is well known that cable is all installed together when installing and arranging by multi-cable is bundles of.This causes each electricity
Gap is generally all smaller between cable or even tight, mutual ventilation effect are bad.So as to cause cable in the course of work
In, the phenomenon that can not carrying out proper heat reduction, be susceptible to cable overheat, if handled not in time, consequence is hardly imaginable.
The content of the invention
Based on above-mentioned background technology, the present invention proposes a kind of anti-mistake for automatically forming heat dissipation wind channel
Electric heating cable can be formed on its surface air intake passage automatically, to accelerate its radiating rate, really when its temperature is more than predetermined value
Protect cable normal operation.
The present invention proposes a kind of anti-electric heating cable excessively for automatically forming heat dissipation wind channel, including:It cable core and coats successively
In the lapping layer of cable core periphery, shielded layer, inner sheath and oversheath, wherein:
Inner sheath is made by hard material, and oversheath is made by elastic material, and the outer circumferential surface of inner sheath with
Spacing is reserved between the inner peripheral surface of oversheath to form ring cavity;It is equal around the outer circumferential surface annular of inner sheath equipped with several in ring cavity
The traction body of cloth, the traction body are made by heat-shrinkage material and along the length direction linear extension of the cable, traction bodies
One side fixed with inner sheath, and fixed away from the one side of inner sheath with oversheath.
Preferably, it is equipped with the branch extended in the same direction with traction body in ring cavity and between two traction bodies of arbitrary neighborhood
Support body, one side and the inner sheath of the supporter are fixed, and the one side away from inner sheath is fixed with oversheath.
Preferably, supporter is made by thermal expansion material.
Preferably, the both sides of supporter are equipped with to carry out it circumferential mutual limit body, and the limit body is by hard
Material is made and is extended in the same direction with supporter, and the one side of limit body is fixed with inner sheath.
Preferably, the periphery of shielded layer and positioned at inner sheath inside be equipped with extrude layer.
In the present invention, by being made choice in inner sheath and oversheath material, so that inner sheath has good knot
Structure stability, oversheath has good elastic property, by setting ring cavity between inner sheath and oversheath, so that oversheath
With the space become to inner sheath direction bullet;By setting traction body in ring cavity, and make the traction body by heat-shrinkage material system
It forms, one side and the inner sheath of the traction body are fixed, and the one side away from inner sheath is fixed with oversheath, in use, when electricity
When cable temperature is more than predetermined value, traction body heat shrinkable pulls oversheath to become with its inward-facing sheath direction bullet that connects, thus
The outer circumferential surface of oversheath forms several grooves that are circumferentially uniformly distributed and extending longitudinally along the cable, to utilize the groove type formed
Heat dissipation is aerated into air intake passage, to cool down to cable;And when the temperature of cable is recovered to predetermined value, traction body is automatic
Recover to intrinsic shape.
In conclusion a kind of anti-electric heating cable excessively for automatically forming heat dissipation wind channel proposed by the present invention, it can be according in it
The variation of portion's heat makes its external structure make corresponding change automatically, its heat generated is made quickly to disperse, so as to improve cable
It is safe to use.
Description of the drawings
Fig. 1 is a kind of anti-cross-section diagram for crossing electric heating cable for automatically forming heat dissipation wind channel proposed by the present invention.
Specific embodiment
In the following, technical scheme is described in detail by specific embodiment.
As shown in Figure 1, Fig. 1 is a kind of anti-section for crossing electric heating cable for automatically forming heat dissipation wind channel proposed by the present invention
Figure.
With reference to Fig. 1, a kind of anti-electric heating cable excessively for automatically forming heat dissipation wind channel of proposition of the embodiment of the present invention, including:Cable
Core 1 and lapping layer 2, shielded layer 3, inner sheath 4 and the oversheath 5 for being coated on 1 periphery of cable core successively, wherein:Inner sheath 4 is by hard
Material is made, and oversheath 5 is made by elastic material, between the outer circumferential surface of inner sheath 4 and the inner peripheral surface of oversheath 5
Spacing is reserved with to form ring cavity;It is described equipped with several around the uniformly distributed traction body 6 of the outer circumferential surface annular of inner sheath 4 in ring cavity
Traction body 6 is made by heat-shrinkage material and along the length direction linear extension of the cable, the one side of traction body 6 and inner sheath
4 fix, and the one side away from inner sheath 4 is fixed with oversheath 5.
The present invention so works:By being made choice in inner sheath 4 and oversheath 5 material, so that inner sheath 4
With good structural stability, oversheath 5 has good elastic property, by being set between inner sheath 4 and oversheath 5
Ring cavity, so that oversheath 5 has the space become to 4 direction bullet of inner sheath;By setting traction body 6 in ring cavity, and lead this
Draw body 6 to be made by heat-shrinkage material, one side and the inner sheath 4 of the traction body 6 are fixed, the one side away from inner sheath 4 with
Oversheath 5 is fixed, in use, when cable temperature is more than predetermined value, 6 heat shrinkable of traction body pulls oversheath 5 to connect with it
Become towards 4 direction bullet of inner sheath, so as to form several circumferential directions uniformly in the outer circumferential surface of oversheath 5 and prolong longitudinally along the cable
The groove stretched is aerated heat dissipation, to cool down to cable to form air intake passage using the groove of formation;And when the temperature of cable
When recovering to predetermined value, traction body 6 recovers automatically to intrinsic shape.
From the foregoing, it will be observed that a kind of anti-electric heating cable excessively for automatically forming heat dissipation wind channel proposed by the present invention, it can be according in it
The variation of portion's heat makes its external structure make corresponding change automatically, to avoid because cable arrangement it is overstocked caused by cable bear for a long time
When carrying work, heat can not quickly disperse and superheating phenomenon occurs, can effectively improve the safe to use of cable.
In addition, in the present embodiment, it is equipped with and traction body 6 in ring cavity and between two traction bodies 6 of arbitrary neighborhood
The supporter 7 extended in the same direction, one side and the inner sheath 4 of the supporter 7 are fixed, the one side away from inner sheath 4 and oversheath 5
It is fixed.The molding effect of groove is improved with the cooperation of traction body 6 using supporter 7.
In the present embodiment, supporter 7 is made by thermal expansion material, so that supporter 7 can surpass in the temperature of cable
Expansion can be generated when crossing predetermined value, to expand against 5 outwardly convex of oversheath using supporter 7, it is made to match somebody with somebody with traction body 6
Increase depth of groove is closed, the intake of groove is improved, accelerates its radiating rate.And in the present embodiment, the both sides of supporter 7 are equal
Equipped with for carrying out circumferential mutual limit body 8 to it, the limit body 8 is made and same with supporter 7 by hard material
To extension, and the one side of limit body 8 is fixed with inner sheath 4.So that during 7 expanded by heating of supporter, can only radial expansion, so as to rise
Expansion stroke is all used for promoting the outside deformation of oversheath 5.
In the present embodiment, the periphery of shielded layer 3 and positioned at inner sheath 4 inside be equipped with extrude layer 9, to improve inside cable
Protection effect.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.