CN114464353A - Bending-resistant flame-retardant cable - Google Patents

Abstract

The invention relates to the field of electric power, and discloses a bending-resistant and flame-retardant cable, comprising a cable core group, the outer part of the cable core group is wrapped with a wear-resistant layer, and the outside of the wear-resistant layer is wrapped with a bending-resistant layer The outside of the bending-resistant layer is wrapped with a flame-retardant layer, the outer wall of the flame-retardant layer is wrapped with a braided layer, the outside of the braided layer is wrapped with an insulating layer, and the outside of the heat-insulating layer is wrapped with an outer protective cover , the cable provides bending space through the bending-resistant layer, and can also prevent excessive bending, and the copper spring and bellows at the center of the cable will also be deformed during bending. When the copper spring passes through its own toughness The space provided by the bulge of the corrugated pipe increases the bending resistance of the cable, and the cable is wrapped with a flame retardant layer, and the thermal insulation layer can effectively increase the fire resistance.

Description

A bending-resistant flame-retardant cable

technical field

The invention relates to the field of electric power, in particular to a bending-resistant flame-retardant cable.

Background technique

Cable is a general term for optical cables, cables and other items. There are many uses for cables. They are mainly used to control installation, connect equipment, and transmit power. It is a common and indispensable thing in daily life. Manufactured to meet optical, electrical, mechanical or environmental performance specifications, it uses one or more electrical conductors placed in a sheath as a transmission medium and can be used individually or in groups. Components, optical cables are mainly composed of light guides It is composed of fiber, plastic protective sleeve and plastic outer skin. There is no metal such as gold, silver, copper and aluminum in the optical cable, and generally has no recycling value. The optical cable is a certain number of optical fibers composed of a cable core according to a certain method. Covering the outer sheath, a communication line used to realize optical signal transmission. The traditional cable structure is generally composed of inner core wire plus outer shield and outer protection by PVC material. The core wire is used for internal signal transmission, and the outer shield is used for EMI protection and grounding. Use, because the outer shield is composed of small single copper wires, and there is no support to protect the outside. In special wiring applications, the cable is easily squeezed or bent by external pressure, causing the inner core wire to be flattened or damaged, affecting the transmission. Use, the defective rate of wiring products is high, it does not have good protection effect, and it does not have good bending resistance, which is not practical enough. For this reason, we propose a bending-resistant flame-retardant cable.

SUMMARY OF THE INVENTION

In view of the deficiencies of the prior art, the present invention provides a bending-resistant flame-retardant cable, which solves the above-mentioned problems.

In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bending-resistant and flame-retardant cable, comprising a cable core group, the outer part of the cable core group is wrapped with a wear-resistant layer, and the wear-resistant layer is The outside is covered with a bending-resistant layer, the outside of the bending-resistant layer is covered with a flame-retardant layer, the outer wall of the flame-retardant layer is covered with a braided layer, the outside of the braided layer is covered with a thermal insulation layer, and the outside of the thermal insulation layer is covered The package has an outer cover.

Preferably, the cable core wire set includes a cable core, an insulating sleeve, a corrugated tube, a copper spring, a wire cotton, and an inner protective layer, the copper spring is located at the center of the cable, and the copper spring is wrapped with A corrugated tube, a circumference of the corrugated tube is provided with multiple sets of insulating sleeves at equal distances, and a cable core is wrapped inside the insulating sleeve.

Preferably, the inner protective layer is wrapped on the outside of the insulating sleeve and the bellows, and there is a gap between the insulating sleeve, the bellows and the inner protective layer, and the gap is filled with wire cotton.

Preferably, the outer wall of the corrugated tube is provided with raised portions at equal distances laterally.

Preferably, the anti-bending layer includes a stretch-resistant rubber sleeve and a bending-resistant plate, the inner wall of the anti-stretching rubber sleeve is fixedly installed with a bending-resistant plate at an equal distance around the circumference, and the bottom outer wall of the anti-bending plate is on the surface of the wear-resistant layer. The outer wall is in contact, and the anti-bending plate is also installed on the inner wall of the anti-stretching rubber sleeve laterally and equidistantly.

Preferably, a plurality of groups of raised rubber soft bodies are arranged on the outer wall of the wear-resistant layer.

Preferably, the braided layer is formed by regularly twisting and braiding multiple groups of steel wires.

Compared with the prior art, the present invention provides a bending-resistant flame-retardant cable, which has the following beneficial effects:

1. The bending-resistant and flame-retardant cable is wrapped with a bending-resistant layer on the outside of the wear-resistant layer. The bending-resistant layer includes a stretch-resistant rubber sleeve and a bending-resistant plate. Bending plate, and the bottom outer wall of the anti-bending plate is in contact with the outer wall of the wear-resistant layer, and the anti-bending plate is also installed on the inner wall of the anti-stretching rubber sleeve horizontally and equidistantly. Provide space for the cable when it is bent, and collide with each other between multiple sets of bending resistance plates, and at the same time prevent the cable from continuing to bend, preventing the staff from bending the cable excessively.

2. For the bending-resistant and flame-retardant cable, the outer part of the cable core group is wrapped with a wear-resistant layer, and the outer wall of the wear-resistant layer is provided with a plurality of groups of raised rubber software, and the bending resistance plate will move toward the center with the bending. Extrusion, the rubber soft body on the surface of the wear-resistant layer can effectively buffer the extrusion force of the bending resistance plate on the cable core group, and prevent the cable core in the cable core group from being damaged.

3. The bending-resistant and flame-retardant cable, the cable core wire group includes a cable core, an insulating sleeve, a corrugated tube, a copper spring, a wire cotton, and an inner protective layer. The copper spring is located at the center of the cable, and the copper spring is The outer part of the cable is wrapped with a corrugated tube, and the copper spring and corrugated tube at the center of the cable will also be deformed during bending. Bend.

4. The bending-resistant flame-retardant cable is wrapped with a flame-retardant layer, and the thermal insulation layer can effectively increase the fire resistance.

Description of drawings

FIG. 1 is a schematic cross-sectional view of the structure of the present invention.

In the picture: 1. Cable core wire group; 2. Cable core; 3. Insulation sleeve; 4. Corrugated pipe; 5. Copper spring; 6. Cotton wool; 7. Inner protection layer; Anti-stretching rubber cover; 10. Bending plate; 11. Flame retardant layer; 12. Heat insulation layer; 13. Steel wire; 14. Braided layer;

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Referring to FIG. 1, a bending-resistant and flame-retardant cable includes a cable core group 1. The outer part of the cable core group 1 is wrapped with a wear-resistant layer 16, and the outside of the wear-resistant layer 16 is wrapped with a bending-resistant layer 8. The outside of the bending layer 8 is wrapped with a flame retardant layer 11, the outer wall of the flame retardant layer 11 is wrapped with a braided layer 14, the outside of the braided layer 14 is wrapped with a heat insulating layer 12, and the outside of the heat insulating layer 12 is wrapped with an outer protective cover 15. The cable is wrapped with a flame retardant layer 11, and the heat insulation layer 12 can effectively increase the fire resistance.

Further, the cable core wire group 1 includes a cable core 2, an insulating sleeve 3, a corrugated tube 4, a copper spring 5, a wire cotton 6, and an inner protective layer 7. The copper spring 5 is located at the center of the cable, and the copper spring The outside of 5 is wrapped with a corrugated tube 4, and a circumference of the corrugated tube 4 is provided with multiple sets of insulating sleeves 3 at equal distances, and the inside of the insulating sleeve 3 is wrapped with a cable core 2.

Further, the inner protective layer 7 is wrapped on the outside of the insulating sleeve 3 and the bellows 4, there is a gap between the insulating sleeve 3, the bellows 4 and the inner protective layer 7, and the gap is filled with wire cotton 6, and the outer wall of the bellows 4 is horizontal. Protruding parts are provided at equal distances, and the copper spring 5 and the bellows 4 at the center of the cable will also be deformed during bending. When the copper spring 5 increases the space provided by its own toughness and the protrusion of the bellows 4 the bending resistance of the cable.

Further, the anti-bending layer 8 includes an anti-stretching rubber sleeve 9 and a bending-resisting plate 10. The inner wall of the anti-stretching rubber sleeve 9 is fixedly installed with the anti-bending plate 10 at an equal distance around the circumference, and the bottom outer wall of the anti-bending plate 10 is resistant to wear and tear. The outer wall of the layer 16 is in contact, and the bending resistance plate 10 is also installed on the inner wall of the anti-stretching rubber sleeve 9 at equal distances horizontally. There is a gap between the bending resistance plates 10 in the bending resistance layer 8, which can provide space for the cable to bend. , and collide with each other between the bending resistance plates 10 of the plurality of groups, and at the same time prevent the cable from being bent further, preventing the staff from bending the cable excessively.

Further, the outer wall of the wear-resistant layer 16 is provided with a plurality of groups of raised rubber soft bodies, the bending resistance plate 10 will be squeezed toward the center along with the bending, and the rubber soft body on the surface of the wear-resistant layer 16 can effectively buffer the bending resistance plate. 10 pairs of squeezing force of the cable core group 1 to prevent the cable core 2 in the cable core group 1 from being damaged.

Further, the braided layer 14 is formed by regularly twisting and braiding a plurality of groups of steel wires 13, and the twisting method is to make the multiple groups of steel wires 13 twist and intertwine together toward the center point according to a predetermined direction.

Working principle: When the cable is bent and laid, there is a gap between the anti-bending plates 10 in the bending-resistant layer 8, which can provide space for the cable when it is bent, and when it is bent to multiple sets of anti-bending plates 10 They collide with each other, and at the same time prevent the cable from continuing to bend, preventing the staff from bending the cable excessively, and the bending plate 10 will be squeezed toward the center with the bending, and the rubber soft body on the surface of the wear-resistant layer 16 can effectively buffer The squeezing force of the baffle plate 10 on the cable core group 1 prevents the cable core 2 in the cable core group 1 from being damaged, and the copper spring 5 and the corrugated tube 4 at the center of the cable will also occur during bending. Deformation, when the copper spring 5 increases the bending resistance of the cable through its own toughness and the space provided by the bulge of the corrugated tube 4, and the flame retardant layer 11 is wrapped in the cable, the heat insulation layer 12 can effectively increase the fire resistance sex.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. The utility model provides a resistant fire-retardant cable of buckling, includes cable core group (1), its characterized in that: the cable core wire group is characterized in that the outer portion of the cable core wire group (1) is wrapped with a wear-resistant layer (16), the outer portion of the wear-resistant layer (16) is wrapped with a bending-resistant layer (8), the outer portion of the bending-resistant layer (8) is wrapped with a flame-retardant layer (11), the outer wall of the flame-retardant layer (11) is wrapped with a woven layer (14), the outer portion of the woven layer (14) is wrapped with a heat-insulating layer (12), and the outer portion of the heat-insulating layer (12) is wrapped with an outer protective sleeve (15).

2. The bend-resistant flame-retardant cable according to claim 1, wherein: the cable core wire set (1) comprises a cable core (2), an insulating sleeve (3), a corrugated pipe (4), a copper spring (5), wire cotton (6) and an inner protective layer (7), wherein the copper spring (5) is located at the center of the cable, the corrugated pipe (4) wraps the copper spring (5), a plurality of groups of insulating sleeves (3) with equal distances are arranged in a circle of the corrugated pipe (4), and the cable core (2) wraps the insulating sleeve (3).

3. The bend-resistant flame-retardant cable according to claim 2, wherein: the inner protective layer (7) wraps the outer portions of the insulating sleeve (3) and the corrugated pipe (4), gaps exist among the insulating sleeve (3), the corrugated pipe (4) and the inner protective layer (7), and the gaps are filled with the wire cotton (6).

4. A bend-resistant flame-retardant cable according to claim 3, characterized in that: the outer wall of the corrugated pipe (4) is transversely provided with convex parts at equal intervals.

5. The bend-resistant flame-retardant cable according to claim 1, wherein: resistant layer (8) of bending includes stretch-proofing rubber sleeve (9) and bending-resistant board (10), the inner wall a week equidistance fixed mounting of stretch-proofing rubber sleeve (9) has bending-resistant board (10), and the bottom outer wall of bending-resistant board (10) in the outer wall contact of wearing layer (16), on the inner wall of the stretch-proofing rubber sleeve (9) of installation of also horizontal equidistance of bending-resistant board (10).

6. The bend-resistant flame-retardant cable according to claim 5, wherein: the outer wall of the wear-resistant layer (16) is provided with a plurality of groups of raised rubber soft bodies.

7. The bend-resistant flame-retardant cable according to claim 1, wherein: the braided layer (14) is formed by regularly twisting and braiding a plurality of groups of steel wires (13).

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