CN211699769U

CN211699769U - Flexible cable

Info

Publication number: CN211699769U
Application number: CN202020635567.7U
Authority: CN
Inventors: 宋伟; 彭宇
Original assignee: Anhui Ruizhixing Cable Group Co ltd
Current assignee: Anhui ruizhixing Electronic Technology Group Co.,Ltd.
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2020-10-16
Anticipated expiration: 2030-04-24

Abstract

The utility model discloses a flexible cable, including central rubber tube, periphery at central rubber tube is provided with a plurality of sinle silks and constitutes the cable core, the outside cladding has first shielding layer in proper order at the cable core, the metal armor, reinforcing weaving layer and oversheath, the space intussuseption that constitutes between first shielding layer and metal armor inner wall is filled with the fire prevention filling layer, the space intussuseption that constitutes between metal armor outer wall and reinforcing weaving layer is filled with the filling layer that blocks water, the sinle silk is including the conductor, the outside of conductor cladding has the insulating layer in proper order, second shielding layer and triangle-shaped rubber support frame, it has polyurethane elasticity filling layer to fill in the inside of triangle-shaped support frame. The utility model discloses be equipped with the bracing piece that the cross-section is rice style of calligraphy in the inside of central rubber tube, cable strength is big, and difficult fracture is equipped with triangle-shaped rubber support frame in the refill outside, and it has polyurethane elasticity filling layer to fill in the inside of triangle-shaped support frame, increases the antitorque performance and the compressive property of sinle silk, and is flexible good.

Description

Flexible cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a flexible cable.

Background

With the wide application of high-speed elevators, high-speed cranes and industrial robots, higher requirements are put forward on the bending resistance, wear resistance, mechanical strength, flexibility, load and the like of cables. The traditional flexible cable is used in the original working occasions, the normal service life of the traditional flexible cable is generally more than 24 months, after the traditional flexible cable is used in the high-speed lifting occasions, the conditions of distortion and sheath cracking are easy to occur, the probability and frequency of core breaking of the insulated wire core are greatly increased, even distortion occurs within half a year of putting into use in some cases, the service life is seriously shortened, and great potential safety hazards and economic loss are brought.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose is exactly in order to remedy prior art's defect, provides a flexible cable.

The utility model discloses a realize through following technical scheme:

the utility model provides a flexible cable, is equipped with the bracing piece that the cross-section is the rice style of calligraphy including central rubber tube in the inside of central rubber tube, is provided with a plurality of sinle silks in the periphery of central rubber tube and constitutes the cable core, and the outside at the cable core has first shielding layer, metal armor in proper order the cladding, reinforcing weaving layer and oversheath, the cross-section of metal armor be saw-toothed shape, the space intussuseption that constitutes between first shielding layer and metal armor inner wall is filled with the fire prevention filling layer, the space intussuseption that constitutes between metal armor outer wall and reinforcing weaving layer is filled with the filling layer that blocks water, the sinle silk including the conductor, the cladding has insulating layer, second shielding layer and triangle-shaped rubber support frame in proper order in the outside of conductor, it has polyurethane elasticity filling layer to fill in.

And a polypropylene filling support layer is arranged on the inner side of the first shielding layer.

The outer sheath is an environment-friendly low-smoke halogen-free flame-retardant oil-resistant EVM rubber sheath.

The metal armor layer adopts a double-layer galvanized steel strip armor layer.

The outer sheath is uneven in thickness.

The utility model has the advantages that: the utility model discloses pack the inside and outside both sides and the first shielding layer of zigzag armor respectively with fire prevention filling layer and waterproof layer, space department between the reinforcing weaving layer, increase the stability of cable periphery, non-deformable and fracture, fireproof effect is good, the inside of rubber tube at the center is equipped with the bracing piece that the cross-section is rice style of calligraphy, cable strength is big, difficult fracture, difficult twist-off, be equipped with triangle-shaped rubber support frame outside the line core, it has polyurethane elasticity filling layer to fill in the inside of triangle-shaped support frame, increase the antitorque performance and the compressive property of sinle silk, flexibility is good.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

As shown in figure 1, the flexible cable comprises a central rubber tube 1, a support rod 2 with a cross section in a shape of Chinese character mi is arranged inside the central rubber tube 1, a plurality of wire cores are arranged on the periphery of the central rubber tube 1 to form a cable core, a first shielding layer 3, a metal armor layer 4, a reinforcing braid layer 5 and an outer sheath 6 are sequentially coated on the outer side of the cable core, the cross section of the metal armor layer 4 is in a sawtooth shape, a fireproof filling layer 7 is filled in a gap formed between the first shielding layer 3 and the inner wall of the metal armor layer 4, a water-blocking filling layer 8 is filled in a gap formed between the outer wall of the metal armor layer 4 and the reinforcing braid layer 5, the wire core comprises a conductor 9, an insulating layer 10, a second shielding layer 11 and a triangular rubber support frame 12 are sequentially coated on the outer side of the conductor 9, and a polyurethane elastic filling layer 13 is filled in the triangular support frame 12.

A polypropylene filled support layer 14 is arranged on the inner side of the first shielding layer 3.

The outer sheath 6 is an environment-friendly low-smoke halogen-free flame-retardant oil-resistant EVM rubber sheath.

The metal armor layer 4 adopts a double-layer galvanized steel strip armor layer.

The outer sheath 6 is uneven in thickness. By utilizing the asymmetry of the cable appearance, the cable always stretches and contracts along the weakest part of stress when being bent, so that the side with thick sheath is always positioned at the inner side of the bending, the side with large thickness is automatically contracted at the inner side of the cable when the cable is looped or coiled, directional automatic winding and contraction are realized, the bending stress and the torsional stress generated by the cable can be uniformly loaded on the whole length of the cable, the concentration of the bending stress is reduced, the local damage of the cable is avoided, and the service life of the cable is greatly prolonged.

The first shielding layer 3 can be an aluminum-plastic composite film shielding layer, the second shielding layer 11 can be a tinned soft copper wire and polyester wire braided shielding layer, the shielding effect is good, and signal interference is prevented; the metal armor layer 4 is made of metal materials and has strong heat-conducting property and structural strength; the waterproof filling layer is made of waterproof glue and is not easy to fall off and transfer; the reinforcing braided layer 5 can be a Kevlar fiber braided layer, and has small specific gravity and high strength.

Claims

1. A flexible cable, characterized by: including central rubber tube, be equipped with the bracing piece that the cross-section is the rice style of calligraphy in the inside of central rubber tube, be provided with a plurality of sinle silks in the periphery of central rubber tube and constitute the cable core, the outside at the cable core in proper order the cladding have first shielding layer, metal armor, reinforcing weaving layer and oversheath, the cross-section of metal armor be saw-tooth shape, the space intussuseption that constitutes between first shielding layer and metal armor inner wall is filled with the fire prevention filling layer, the space intussuseption that constitutes between metal armor outer wall and reinforcing weaving layer is filled with the filling layer that blocks water, the sinle silk including the conductor, the outside at the conductor in proper order the cladding have insulating layer, second shielding layer and triangle-shaped rubber support frame, it has polyurethane elasticity filling layer to fill in the inside of.

2. A flexible electrical cable according to claim 1, wherein: and a polypropylene filling support layer is arranged on the inner side of the first shielding layer.

3. A flexible electrical cable according to claim 1, wherein: the outer sheath is an environment-friendly low-smoke halogen-free flame-retardant oil-resistant EVM rubber sheath.

4. A flexible electrical cable according to claim 1, wherein: the metal armor layer adopts a double-layer galvanized steel strip armor layer.

5. A flexible electrical cable according to claim 1, wherein: the outer sheath is uneven in thickness.