CN212484983U

CN212484983U - Aluminum alloy cable of resistance to compression

Info

Publication number: CN212484983U
Application number: CN202021195720.5U
Authority: CN
Inventors: 沈伟佳; 郭克钢
Original assignee: Shenzhen Deep Cable Technology Co ltd
Current assignee: Shenzhen Deep Cable Technology Co ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-02-05
Anticipated expiration: 2030-06-24

Abstract

The utility model discloses a compression-resistant aluminum alloy cable, which comprises a pipe body and an outer sheath wrapping the pipe body, wherein the pipe body comprises an inner sheath, a support shaft and at least two support rods, grooves which are uniformly distributed are formed in the outer side wall of the inner sheath, the support shaft is positioned on the axis of the pipe body, the two support rods are respectively fixedly connected with the inner sheath and the support shaft and symmetrically distributed along the support shaft, and the support rods divide the interior of the inner sheath into two cavities for placing aluminum alloy conductors; the utility model discloses a safety protection sleeve, including oversheath, recess, lug, elastic component, air bag, protruding piece, the protruding piece is provided with the lug on the inside wall of oversheath evenly, the lug is arranged in the recess, install the elastic component who is used for the buffering between lug and the recess, elastic component includes curved elastic webbing and gasbag, the protruding one side of elastic webbing and the tip fixed connection of lug, the gasbag is installed between elastic webbing and recess. The cable has high pressure resistance and high flame retardancy.

Description

Aluminum alloy cable of resistance to compression

Technical Field

The utility model relates to a preparation field of cable, concretely relates to aluminum alloy cable of resistance to compression.

Technical Field

The cable is a wire which is widely applied to various industries and transmits electric power or information from one place to another place, is often influenced by external pressure in the installation or use process, and is easy to break when bearing larger pressure; the cable of traditional structure, the crushing resistance is not strong, appears easily because receive the cable damage that too big pressure leads to for a long time, has shortened the life of cable, has increased the maintenance frequency of cable, has reduced work efficiency when increasing the cost, and the use of giving the user brings inconveniently.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem that exists, the utility model provides an aluminum alloy cable of resistance to compression, its concrete technical scheme as follows:

a compression-resistant aluminum alloy cable comprises a pipe body and an outer sheath wrapped on the outer side of the pipe body, wherein the pipe body comprises an inner sheath, a support shaft and at least two support rods, grooves which are uniformly distributed are formed in the outer side wall of the inner sheath, the support shaft is located on the axis of the pipe body, the two support rods are respectively fixedly connected with the inner sheath and the support shaft and symmetrically distributed along the support shaft, and the support rods divide the interior of the inner sheath into two cavities for containing aluminum alloy conductors; the utility model discloses a safety protection sleeve, including oversheath, recess, lug, elastic component, air bag, protruding piece, the protruding piece is provided with the lug on the inside wall of oversheath evenly, the lug is arranged in the recess, install the elastic component who is used for the buffering between lug and the recess, elastic component includes curved elastic webbing and air bag, the protruding one side of elastic webbing contacts with the tip of lug, the air bag is installed between elastic webbing and recess. The cable absorbs a part of pressure by virtue of the buffering effect of the elastic component, the pressure resistance of the cable is enhanced, and then the pressure resistance of the cable is further enhanced under the action of the inner sheath and the supporting rod.

Further, the air bag is filled with non-flammable gas or liquid. When the outer sheath is damaged due to combustion and the air bag is damaged, the non-combustible gas or liquid in the air bag can leak, the combustion area is subjected to flame retardance, and the aluminum alloy conductor in the cable is prevented from being damaged. Specifically, the above-mentioned non-combustible gas or liquid may be carbon dioxide or water.

Further, the outer sheath sequentially comprises an insulating layer, a flame-retardant layer, a steel wire layer and an armor layer from inside to outside, wherein insulating rubber is arranged in the insulating layer, the flame-retardant layer is filled with flame-retardant fibers, and galvanized steel wires are arranged in the steel wire layer. The external electromagnetic interference is shielded through the insulating layer, so that the using effect and safety of the cable are improved; the flame-retardant fiber can initially prevent the cable from being damaged due to combustion; the pressure resistance of the cable can be further improved through the steel wire layer and the armor layer.

Furthermore, the quantity of bracing piece is four, four the bracing piece is along the circumference of back shaft outside and even distribution, four the bracing piece separates the inboard of inner sheath for four cavitys that are used for placing the aluminum alloy conductor.

Furthermore, the cavity is filled with a water-blocking filler.

Furthermore, the aluminum alloy conductor comprises a protective layer, a central unit body and a plurality of outer unit bodies wound along the axial direction of the central unit body, and the central unit body and the outer unit bodies are wrapped in the protective layer.

Has the advantages that: when the compression-resistant aluminum alloy cable disclosed by the utility model is subjected to external pressure, a part of pressure can be absorbed through the elastic component, the compression resistance of the cable is improved, and then the compression resistance of the cable is further enhanced under the action of the inner sheath and the supporting rod; when fire disaster and other conditions occur, flame damages the outer sheath and the air bag, and the incombustible liquid or gas in the air bag flows out to prevent the flame from damaging the inner sheath and the aluminum alloy conductor. Therefore the utility model discloses a cable structure has high crushing resistance and high fire resistance, can provide protection and the flame protection of shocking resistance to inner sheath and aluminum alloy conductor.

Drawings

Fig. 1 is a schematic radial cross-sectional view of a cable according to the present invention;

FIG. 2 is a schematic structural view of the outer sidewall of the inner sheath of the present invention;

fig. 3 is a schematic structural diagram of the aluminum alloy conductor of the present invention.

Reference numerals: 1-an inner sheath; 2-supporting the shaft; 3-supporting rods; 4-an insulating layer; 5-a flame retardant layer; 6-steel wire layer; 7-an armor layer; 8-an elastic component; a 9-aluminum alloy conductor; 11-a groove; 12-a cavity; 41-a bump; 81-air bag; 82-an elastic sheet; 91-a protective layer; 92-central unit cell; 93-outer unit cell.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 and 2, the pressure-resistant aluminum alloy cable comprises a pipe body and an outer sheath wrapped outside the pipe body, wherein the pipe body comprises an inner sheath 1, a support shaft 2 and at least two support rods 3, grooves 11 which are uniformly distributed are formed in the outer side wall of the inner sheath 1, the support shaft 2 is located on the axis of the pipe body, the two support rods 3 are respectively fixedly connected with the inner sheath 1 and the support shaft 2 and symmetrically distributed along the support shaft 2, and the support rods 3 divide the interior of the inner sheath 1 into two cavities 12 for placing aluminum alloy conductors 9; the utility model discloses a safety protective sheath, including the outer sheath, be provided with the lug 41 on the inside wall of outer sheath is even, lug 41 is arranged in recess 11, install the elastic component 8 that is used for the buffering between lug 41 and the recess 11, elastic component 8 includes curved elastic webbing 82 and gasbag 81, the protruding one side of elastic webbing 82 and the tip contact of lug 41, gasbag 81 is installed between elastic webbing 82 and recess 11.

When the cable with the structure is not pressurized, the air bag 81 is supported between the elastic sheet 82 and the groove 11, and the air bag 81 does not fill the groove 11, when the cable is pressurized, the convex block 41 extrudes the elastic sheet 82 to deform and press down the elastic sheet 82, so as to extrude the air bag 81, and the air bag 81 deforms under the pressure to fill the residual space of the groove 11, so that the pressure resistance of the cable is enhanced due to the buffering action of the elastic sheet 82 and the air bag 81; simultaneously, the supporting shaft 2 divides the inner sheath 1 into a plurality of cavities 12, and the aluminum alloy conductors 9 are placed in the cavities 12, so that the aluminum alloy conductors 9 are separated from each other, the winding generated among the aluminum alloy conductors 9 is prevented, and the compression resistance of the cable is further improved under the action of the inner sheath 1 and the supporting rod 3.

Particularly, the supporting rods 3 with corresponding quantity are selected according to the quantity of the aluminum alloy conductors 9, when the number of the aluminum alloy conductors 9 is four, the number of the supporting rods 3 is four, the supporting rods 3 are evenly distributed along the circumference of the outer side of the supporting shaft 2, and the supporting rods 3 divide the inner side of the inner sheath 1 into four cavities 12 for placing the aluminum alloy conductors 9. The cavity 12 is filled with a water-blocking filler, so that the aluminum alloy conductor 9 is fixed in the cavity 12 and protected from water.

Specifically, the grooves 11 on the outer side wall of the outer sheath are uniformly distributed along the circumference of the outer sheath, and the grooves 11 are uniformly distributed along the axial direction of the outer sheath.

Further, the outer sheath comprises an insulating layer 4, a flame-retardant layer 5, a steel wire layer 6 and an armor layer 7 in sequence from inside to outside, insulating rubber is arranged in the insulating layer 4, the flame-retardant layer 5 is filled with flame-retardant fibers, and galvanized steel wires are arranged in the steel wire layer 6. The external electromagnetic interference is shielded through the insulating layer 4, so that the using effect and safety of the cable are improved; the flame-retardant fiber can initially prevent the cable from being damaged due to combustion; the steel wire layer 6 and the armor layer 7 can further improve the pressure resistance of the cable.

When the outer sheath is damaged, the inner sheath 1 and the aluminum alloy conductor 9 are easily damaged when encountering a fire source, and therefore, the air bag 81 is filled with incombustible gas or liquid. When the outer sheath is destroyed by combustion and the air bag 81 is destroyed, the incombustible gas or liquid in the air bag 81 leaks to retard the combustion region, thereby preventing the aluminum alloy conductor 9 in the cable from being damaged. Specifically, the above-mentioned non-combustible gas or liquid may be carbon dioxide or water.

Specifically, as shown in fig. 3, the aluminum alloy conductor 9 includes a protective layer 91, a central unit body 92, and a plurality of outer unit bodies 93 wound along an axial direction of the central unit body 92, the central unit body 92 and the outer unit bodies 93 are wrapped in the protective layer 91, and the central unit body 92 and the outer unit bodies 93 are made of aluminum alloy.

The working principle is as follows: when the cable is under the action of external pressure, the steel wire layer 6 and the armor layer 7 provide primary compression-resistant protection for the cable, when the outer sheath of the cable is deformed by the pressure, the lug 41 extrudes the elastic sheet 82 to deform the elastic sheet 82, so that the air bag 81 is extruded, and the air bag 81 is deformed by the pressure to fill the residual space of the groove 11, so that the compression-resistant capability of the cable is enhanced due to the buffering action of the elastic sheet 82 and the air bag 81; meanwhile, the inner sheath 1 is divided into a plurality of cavities 12 by the supporting shaft 2, and the aluminum alloy conductors 9 are placed in the cavities 12, so that the aluminum alloy conductors 9 are separated from each other, the aluminum alloy conductors 9 are prevented from being wound, and the compression resistance of the cable is further improved under the action of the inner sheath 1 and the supporting rod 3; further, since the gas bag 81 is filled with a nonflammable gas or liquid, when the outer sheath and the gas bag 81 are destroyed by combustion, the nonflammable gas or liquid in the gas bag 81 flows out, and the inner sheath 1 and the aluminum alloy conductor 9 are prevented from being damaged by combustion.

The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. The pressure-resistant aluminum alloy cable is characterized by comprising a pipe body and an outer sheath wrapped on the outer side of the pipe body, wherein the pipe body comprises an inner sheath (1), a supporting shaft (2) and at least two supporting rods (3), grooves (11) which are uniformly distributed are formed in the outer side wall of the inner sheath (1), the supporting shaft (2) is located on the axis of the pipe body, the two supporting rods (3) are respectively fixedly connected with the inner sheath (1) and the supporting shaft (2) and symmetrically distributed along the supporting shaft (2), and the supporting rods (3) divide the interior of the inner sheath (1) into two cavities (12) for placing aluminum alloy conductors (9); evenly be provided with lug (41) on the inside wall of oversheath, lug (41) are arranged in recess (11), install between lug (41) and recess (11) and be used for the elastic component (8) of buffering, elastic component (8) are including curved elastic sheet (82) and gasbag (81), the bellied one side of elastic sheet (82) contacts with the end of lug (41), gasbag (81) are installed between elastic sheet (82) and recess (11).

2. The pressure-resistant aluminum alloy cable according to claim 1, wherein: the air bag (81) is filled with non-flammable gas or liquid.

3. The pressure-resistant aluminum alloy cable according to claim 1, wherein: the outer sheath comprises an insulating layer (4), a flame-retardant layer (5), a steel wire layer (6) and an armor layer (7) from inside to outside in sequence, insulating rubber is arranged in the insulating layer (4), the flame-retardant layer (5) is filled with flame-retardant fibers, and galvanized steel wires are arranged in the steel wire layer (6).

4. The pressure-resistant aluminum alloy cable according to claim 1, wherein: the quantity of bracing piece (3) is four, four bracing piece (3) are along back shaft (2) outside circumference and even distribution, four bracing piece (3) are separated the inboard of inner sheath (1) for four cavity (12) that are used for placing aluminum alloy conductor (9).

5. The pressure-resistant aluminum alloy cable according to claim 1, wherein: and water-blocking fillers are filled in the cavity (12).

6. The pressure-resistant aluminum alloy cable according to any one of claims 1 to 5, wherein: the aluminum alloy conductor (9) comprises a protective layer (91), a central unit body (92) and a plurality of outer unit bodies (93) which are wound along the axial direction of the central unit body (92), wherein the central unit body (92) and the outer unit bodies (93) are wrapped in the protective layer (91).