CN217214221U

CN217214221U - Bending-resistant cable

Info

Publication number: CN217214221U
Application number: CN202220272780.5U
Authority: CN
Inventors: 王海东; 付健
Original assignee: Henan Zhongtong Cable Co ltd
Current assignee: Henan Zhongtong Cable Co ltd
Priority date: 2022-02-10
Filing date: 2022-02-10
Publication date: 2022-08-16
Anticipated expiration: 2032-02-10

Abstract

The utility model discloses a bending-resistant cable, belonging to the technical field of communication cables, comprising a cable core, wherein the outer side of the cable core is provided with an insulating layer, and the outer side of the insulating layer is provided with a protective layer; the protective layer comprises an inner silica gel layer arranged on the outer side of the insulating layer, an outer silica gel layer is arranged on the outer side of the inner silica gel layer, a plurality of metal sleeves are arranged between the inner silica gel layer and the outer silica gel layer, waterproof glue is filled between the metal sleeves and the inner silica gel layer, an elastic connecting piece is arranged between every two adjacent metal sleeves, and a nylon layer is coated on the outer side of the outer silica gel layer; the utility model discloses can solve the poor problem of nai buckling of cable pliability through above-mentioned structure.

Description

Bending-resistant cable

Technical Field

The utility model relates to a communication cable technical field, concretely relates to resistant cable of buckling.

Background

The cable includes power cable, control cable, compensation cable, shielding cable, high-temperature cable, computer cable, signal cable, coaxial cable, fire-resistant cable, marine cable, mining cable, aluminum alloy cable and the like. They are all composed of single-strand or multi-strand conducting wire and insulating layer, and are used for connecting circuit, electric appliances, etc. and are series products of mining rubber jacketed flexible cable. The device is suitable for the power connection of coal mining machines and similar equipment with rated voltage Uo/U of 1.9/3.3KV and below. The cable is mostly used in coal mines, the working temperature of the wire core is allowed to be 65 ℃ for a long time, and the minimum bending radius of the wire is 6 times of the diameter of the cable. Yellow jacketed cables must not be exposed to sunlight for long periods of time.

Because the cable length is long, therefore need put the cable dish when storing, but the cable is not able to bear bending, and the pliability is poor, easily breaks when using, influences the use of cable.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a resistant cable of buckling can solve the poor easy cracked problem of cable flexibility.

In order to achieve the purpose, the utility model provides a bending-resistant cable, which comprises a cable core, wherein an insulating layer is arranged on the outer side of the cable core, and a protective layer is arranged on the outer side of the insulating layer; the protective layer is including setting up the interior silica gel layer in the insulating layer outside, the outside on interior silica gel layer is provided with outer silica gel layer, interior silica gel layer with be provided with a plurality of metal sleeves between the outer silica gel layer, the metal sleeve with it has waterproof glue to fill between the interior silica gel layer, and is adjacent be provided with elastic connector between the metal sleeve, the outside on outer silica gel layer is scribbled and is equipped with the nylon layer.

Furthermore, the metal sleeve is made of pure aluminum, and the hardness of the metal sleeve is not higher than HV 30.

Furthermore, the thickness of the metal sleeve is 0.5mm-1 mm.

Furthermore, the elastic connecting pieces are springs, and the number of the elastic connecting pieces between every two adjacent metal sleeves is 3-6.

Furthermore, a support frame is arranged in the cable core, and the end part of the support frame is glued with the insulating layer.

Further, the outside of insulating layer still is provided with around covering and flame retardant coating.

Furthermore, an insulating ring is arranged in the middle of the support frame.

The utility model discloses an above-mentioned technical scheme's beneficial effect as follows:

the utility model can improve the ductility of the cable through the inner silica gel layer, the outer silica gel layer and the outer nylon layer, and has good wear resistance and can prevent the cable from being worn out;

the cable is internally provided with a plurality of metal sleeves, the metal sleeves are made of pure aluminum, the hardness of the metal sleeves is lower than HV30, the metal sleeves are low in density and have good ductility and toughness, the metal sleeves can be bent and prevented from being broken, when the cable needs to be coiled on a column for fixing for a long time, the metal sleeves are subjected to plastic deformation, good adaptability can be realized, the stability of the structure is ensured, and meanwhile, a good protection effect is realized on an internal cable core;

when the cable needs to be coiled, the coiled diameter is generally more than six times of the diameter of the cable, so that the bending angle of the cable is small, the elastic connecting piece between the metal sleeves can prevent the insulating layer inside from being excessively deformed due to external pressure, and the quality of the cable core of the cable can be well ensured;

when the cable needs to be recycled after being used for a long time, the metal sleeve on the inner side belongs to a recyclable material, so that waste is prevented;

the thickness of the metal sleeve is low, so that the quality of the cable body can be prevented from being increased too much due to the installation of the metal sleeve, and the number of cable racks for erecting the cable can be reduced, so that the cost is reduced;

the cable is internally provided with the fireproof layer, the waterproof layer and the wrapping layer, so that the damage caused by small natural disasters can be effectively prevented, and the secondary damage caused by the damage of the cable can be prevented;

a cable support is arranged between cable cores in the cable, and the support can effectively support the cable so as to effectively prevent the tensile strength of the cable cores;

the outside on outer silica gel layer is provided with the nylon layer, and silica gel itself has fine flexible nature, and the better nylon layer of the pull resistance in the outside in addition can further strengthen the bending resistance of cable, improves the quality of cable.

Drawings

Fig. 1 is a schematic view of an assembly structure of a bending-resistant cable according to the present invention;

fig. 2 is a side sectional view of a bend-resistant cable of the present invention;

fig. 3 is a schematic view of a metal sleeve and an elastic connecting member in a bending-resistant cable of the present invention;

fig. 4 is a schematic view of an installation position of the elastic connecting member in the bending-resistant cable of the present invention;

reference numerals:

1. a cable core; 2. an insulating layer; 3. a protective layer; 4. an inner silica gel layer; 5. an outer silicone layer; 6. a metal sheath; 7. an elastic connecting member; 8. a nylon layer; 9. a support frame; 10. an insulating ring; 11. wrapping a covering; 12. and (3) waterproof glue.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 4 of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the present invention, belong to the protection scope of the present invention.

As shown in fig. 1-4: a bending-resistant cable comprises a cable core, wherein an insulating layer is arranged on the outer side of the cable core, and a protective layer is arranged on the outer side of the insulating layer; the protective layer is including setting up the interior silica gel layer in the insulating layer outside, the outside on interior silica gel layer is provided with outer silica gel layer, interior silica gel layer with be provided with a plurality of metal sleeves between the outer silica gel layer.

Specifically, as shown in fig. 1-4, a bending-resistant cable, because a long cable is needed when the existing cable is laid, and the cable is also troublesome to connect outdoors, on one hand, the cable is wound in a winding manner when being wound, on the other hand, the quality of the cable cannot be too large, otherwise, the number of cable brackets (telegraph poles) is increased in multiple when the cable is laid outdoors, and much cost is increased, therefore, a corresponding bending-resistant structure is arranged on the outer side of the cable, and excessive increase of the quality is avoided, and the bending-resistant cable comprises a cable core 1, wherein an insulating layer 2 is arranged on the outer side of the cable core 1, and a protective layer 3 is arranged on the outer side of the insulating layer 2; the protective layer 3 comprises an inner silica gel layer 4 arranged on the outer side of the insulating layer 2, an outer silica gel layer 5 is arranged on the outer side of the inner silica gel layer 4, a plurality of metal sleeves 6 are arranged between the inner silica gel layer 4 and the outer silica gel layer 5, waterproof glue 12 is filled between each metal sleeve 6 and the inner silica gel layer 4, an elastic connecting piece 7 is arranged between every two adjacent metal sleeves 6, a nylon layer 8 is coated on the outer side of the outer silica gel layer 5, each metal sleeve 6 is made of pure aluminum and has the hardness not higher than HV30, the thickness of each metal sleeve 6 is 0.5mm-1mm, the insulating layer 2 is obviously made of plastic, different materials are selected according to different cable cores 1 according to the color, the inner silica gel layer 4 and the outer silica gel layer 5 are made of the same material and have the thickness not more than 2mm, and the waterproof glue 12 can be filled or coated, all can satisfy the operation requirement, nylon layer 8's nylon thickness can set up to 0.5 mm's coating, also can set up to the coating of other thickness, all can satisfy the user demand, the material of metal covering 6 can select the pure aluminium material that the hardness is minimum, also can use other materials, only need the hardness be less than HV30 can, the thickness of metal covering 6 can be 0.5mm-1mm, can select according to the cable core 1 of different materials, when the diameter of cable core 1 is too big, also can set up to multilayer metal covering 6, set up corresponding glue film between the adjacent metal covering 6 and can satisfy the service condition.

According to an embodiment of the present invention, as shown in fig. 1-4, in order to prevent the adjacent metal sleeves 6 from generating large plastic deformation when facing the ordinary bending, and thus cause the existence of a protruding crease or other protrusions when bending the thickness, a corresponding structure should be provided, so that the deformation degree of the metal sleeves 6 can be reduced when coiling; the elastic connecting pieces 7 are springs, the number of the elastic connecting pieces 7 between every two adjacent metal sleeves 6 is 3-6, obviously, the size of the spring should be selected to be a small type, the diameter of the spring should be smaller than 2mm, and the maximum elastic deformation amount should be 0.7 times larger than the length of the spring, so as to meet the use requirement.

According to the utility model discloses an embodiment, as shown in fig. 1-4, in order to make cable core 1 still can keep original shape after having experienced buckling, should be provided with corresponding structure and make cable core 1 keep corresponding shape to can reset after experiencing buckling, be provided with support frame 9 in the cable core 1, just the tip of support frame 9 with for splicing between the insulating layer 2, the outside of insulating layer 2 still is provided with around covering 11 and flame retardant coating, the middle part of support frame 9 is provided with insulator ring 10, and very obvious, but support frame 9 insulator ring 10 all should be insulating material, and itself should possess certain bendability, make it coil smoothly and establish, therefore the material of support frame 9 and insulator ring 10 can select for plastic tubing or carbon fiber tube, all can satisfy the operation requirement.

The utility model discloses a use method: when the cable needs to be coiled, the elastic connecting pieces 7 in the cable deform, the elastic connecting pieces 7 on the outer side extend, the elastic connecting pieces 7 on the inner side are compressed, and meanwhile, the metal sleeve 6 between the elastic connecting pieces 7 can play a good protection effect on the cable core 1 on the inner side; when the elastic connecting piece 7 needs to be restored, the inner silicone tube, the outer silicone tube and the nylon layer 8 on the outer side can be automatically restored due to the excellent ductility of the elastic connecting piece; when the winding is required, the metal sheath 6 is plastically deformed, so that the cable is tightly wound on the object to be fixed.

In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A bending-resistant cable is characterized in that: the cable comprises a cable core (1), wherein an insulating layer (2) is arranged on the outer side of the cable core (1), and a protective layer (3) is arranged on the outer side of the insulating layer (2);

the protective layer (3) is including setting up interior silica gel layer (4) in insulating layer (2) the outside, the outside on interior silica gel layer (4) is provided with outer silica gel layer (5), interior silica gel layer (4) with be provided with a plurality of metal sleeves (6) between outer silica gel layer (5), metal sleeve (6) with it has waterproof glue (12) to fill between interior silica gel layer (4), and is adjacent be provided with elastic connecting piece (7) between metal sleeve (6), nylon layer (8) is scribbled in the outside on outer silica gel layer (5).

2. A bend-resistant cable as recited in claim 1, wherein: the metal sleeve (6) is made of pure aluminum, and the hardness of the metal sleeve is not higher than HV 30.

3. A bend-resistant cable as recited in claim 1, wherein: the thickness of the metal sleeve (6) is 0.5mm-1 mm.

4. A bend-resistant cable as recited in claim 1, wherein: the elastic connecting pieces (7) are springs, and the number of the elastic connecting pieces (7) between every two adjacent metal sleeves (6) is 3-6.

5. A bend-resistant cable as recited in claim 1, wherein: a supporting frame (9) is arranged in the cable core (1), and the end part of the supporting frame (9) is glued with the insulating layer (2).

6. A bend-resistant cable as recited in claim 1, wherein: the outside of insulating layer (2) still is provided with around covering (11) and flame retardant coating.

7. A bend-resistant cable as recited in claim 5, wherein: and an insulating ring (10) is arranged in the middle of the support frame (9).