CN210223602U

CN210223602U - Bending-resistant mineral insulated cable

Info

Publication number: CN210223602U
Application number: CN201921136640.XU
Authority: CN
Inventors: Xingquan Zhang; 张星权
Original assignee: Chongqing Shenzhou Cable Group Ltd By Share Ltd
Current assignee: Chongqing Shenzhou Cable Group Ltd By Share Ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-03-31
Anticipated expiration: 2029-07-19

Abstract

The utility model discloses a mineral insulated cable of nai buckling, including the cable main part, the cable main part includes sheath, armor, interior sheath and conductor from outside to inside in proper order, sheath central point department installs location buffering subassembly, and a plurality of conductors become the circumference and distribute in the location buffering subassembly outside, and the two is tangent, and the conductor outer surface cover is equipped with the insulating layer, and the insulating layer outer surface cover is equipped with the buffer layer, the buffer layer includes rubber layer and buffer rod, and a plurality of the buffer rod is the circumference setting inside the rubber layer; the utility model discloses be provided with and be provided with the buffer beam, can increase the relative hardness of cable main part, can receive crooked or when buckling at the cable main part, reduce its degree of buckling to reduce the sheath and buckle surface cracking's probability, increase its life, set up location buffering subassembly and protection buffering subassembly, can receive external impact or when extrudeing in the cable main part, the rotation of spin is strikeed to the external buffering and is unloaded the power effect.

Description

Bending-resistant mineral insulated cable

Technical Field

The utility model belongs to the technical field of the cable, concretely relates to mineral insulated cable of nai buckling.

Background

Cable: usually, the cable is composed of several or several groups of wires, and 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, etc. They are made up of single or multiple wire and insulating layer for connecting electric circuit, electric appliances, etc., and wire and cable for transmitting electric (magnetic) energy, information and wire products for realizing electromagnetic energy conversion.

The existing mineral insulated cable can be bent when being used possibly, a sheath of an outer layer of the cable or even an inner layer of the cable is prone to cracking and damage at a bent part for a long time, or the cable can be dragged to wear on the ground when being used sometimes, conductors inside the cable can be exposed seriously, and the cable cannot be used due to damage, so that the bending-resistant mineral insulated cable is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mineral insulated cable of nai buckling to the mineral insulated cable that proposes in solving above-mentioned background art can appear the condition of buckling when probably using when using, gets off for a long time that the outer sheath of cable or inlayer crack damage in the department of buckling easily, perhaps the cable can pull when using sometimes and cause wearing and tearing on the ground, seriously can expose the conductor of the inside, causes the cable to damage unable problem.

In order to achieve the above object, the utility model provides a following technical scheme: a bending-resistant mineral insulated cable comprises a cable main body, wherein the cable main body sequentially comprises a sheath, an armor layer, an inner protection layer and a conductor from outside to inside, a positioning buffer component is arranged at the central point of the sheath, the plurality of conductors are distributed on the outer side of the positioning buffer component in a circumferential manner, the conductor and the buffer layer are tangent, the outer surface of the conductor is sleeved with an insulating layer, the outer surface of the insulating layer is sleeved with the buffer layer, the buffer layer comprises a rubber layer and buffer rods, a plurality of the buffer rods are circumferentially arranged in the rubber layer, the buffer rod is made of thin iron wires, the positioning buffer component comprises buffer rubber and rolling balls, the interior of the buffer rubber is hollow, and a plurality of the rolling balls are positioned in the buffer rubber and mutually contact with each other to rotate, an protective layer is arranged between the sheath and the armor layer, and a protective buffer assembly is arranged in the protective layer.

Preferably, protection buffering subassembly includes a plurality of circular circles and horizon bar, circular circle is circular iron wire, the horizon bar is fixed circular circle surface, and has a plurality of tie points between the two, and the tie point surface has the buffer block, a buffer block terminal surface with the horizon bar is fixed, another terminal surface with sheath internal surface contact.

Preferably, the horizon bar is the iron wire, the buffer block is the block rubber, just circular circle internal surface with the corresponding department of buffer block is provided with the rolling subassembly, the rolling subassembly includes ball and spherical groove.

Preferably, an open spherical groove is formed in the inner surface of the circular ring, the ball is located in the spherical groove, the inner end surface of the ball is in contact with the surface of the armor layer, and the ball can rotate in the spherical groove.

Preferably, the sheath is rubber, the insulating layer is a rubber sleeve, and the inner sheath layer is rubber.

Preferably, a filling layer is filled between the outer surface of the buffer layer and the inner surface of the inner sheath layer, and the filling layer is mainly polyolefin.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses be provided with the buffer beam, can increase the relative hardness of cable main part, can receive crooked or when buckling at the cable main part, reduce its degree of buckling, thereby reduce the sheath and buckle the probability of surface crack, increase its life, be provided with location buffering subassembly and protection buffering subassembly, can receive external impact or when extrudeing in the cable main part, the rotation of spin is strikeed to the external world and is played the buffering and unload the power effect, and location buffering subassembly also plays the positioning action to the conductor, prevent that the conductor from moving the dislocation each other because the external impact.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top view of a partial structure of the protective bumper assembly of the present invention;

fig. 3 is an enlarged schematic view of the inside of the present invention;

fig. 4 is an enlarged schematic view of the inside of the present invention B;

FIG. 5 is an enlarged schematic view of the positioning buffer assembly of the present invention;

in the figure: 1. a sheath; 2. a protective layer; 3. a protective cushioning component; 301. a circular ring; 302. a horizontal bar; 4. positioning the buffer assembly; 401. a cushion rubber; 402. rolling a ball; 5. an armor layer; 6. an inner protective layer; 7. a filling layer; 8. a conductor; 9. an insulating layer; 10. a buffer layer; 101. a rubber layer; 102. a buffer rod; 11. a buffer block; 12. a ball bearing; 13. a spherical groove.

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a mineral insulated cable resistant to bending comprises a cable main body, the cable main body sequentially comprises a sheath 1, an armor layer 5, an inner protection layer 6 and conductors 8 from outside to inside, a positioning buffer component 4 is installed at the central point of the sheath 1, a plurality of conductors 8 are circumferentially distributed on the outer side of the positioning buffer component 4 and are tangent to the positioning buffer component 4, an insulating layer 9 is sleeved on the outer surface of each conductor 8, a buffer layer 10 is sleeved on the outer surface of each insulating layer 9, each buffer layer 10 comprises a rubber layer 101 and buffer rods 102, the buffer rods 102 are circumferentially arranged inside the rubber layer 101, the buffer rods 102 are thin iron wires, the buffer rods 102 are arranged to increase the relative hardness of the cable main body, the bending degree of the cable main body can be reduced when the cable main body is bent or bent, the probability of cracking of the bending surface of the sheath 1 is reduced, the service life of the cable main body is prolonged, the inside hollow that is of cushion rubber 401, and a plurality of spin 402 are located inside cushion rubber 401, and the mutual contact rotates each other, location buffering subassembly 4 can receive external impact or when extrudeing at the cable main part, spin 402 rotation each other can play the buffering to unload power effect to external impact, and whole simultaneously also can play the locate action to conductor 8, prevent that conductor 8 from because external impact from removing the dislocation each other, be provided with inoxidizing coating 2 between sheath 1 and the armor 5, install protection buffering subassembly 3 in the inoxidizing coating 2.

In this embodiment, preferably, the protective buffer assembly 3 includes a plurality of circular rings 301 and horizontal rods 302, the circular rings 301 are made of circular iron wires, the horizontal rods 302 are fixed on the outer surface of the circular rings 301, and a plurality of connection points are arranged between the circular rings 301 and the horizontal rods 302, the outer surface of the connection points is provided with buffer blocks 11, one end surface of each buffer block 11 is fixed with the horizontal rod 302, the other end surface of each buffer block 11 is in contact with the inner surface of the sheath 1, the horizontal rods 302 are made of iron wires, the buffer blocks 11 are made of rubber blocks, and the inner surface of each circular ring 301 is provided with a rolling assembly corresponding to the buffer blocks 11, the rolling assembly includes balls 12 and spherical grooves 13, the inner surface of the circular ring 301 is provided with spherical grooves 13 having openings, the balls 12 are located in the spherical grooves 13, the opening diameter of the spherical grooves 13 is smaller than the maximum diameter of the balls 12, and the inner end surface of, reduce relative degree of buckling to increase the life of cable main part, and ball 12 and buffer block 11 can play preliminary buffering when receiving external force and unload the power effect.

In this embodiment, it is preferable that the sheath 1 is made of rubber, the insulating layer 9 is made of rubber, and the inner sheath 6 is made of rubber.

In this embodiment, it is preferable that the filling layer 7 is filled between the outer surface of the buffer layer 10 and the inner surface of the inner sheath layer 6, and the filling layer 7 is mainly polyolefin.

The utility model discloses a theory of operation and use flow: the utility model discloses when using, if the cable main part is in wanting to buckle, then horizontal pole 302 and bumper bar 102 receive the effect of power simultaneously and become curved gradually, but because certain hardness that self has for the cable main part can receive certain influence and make angle of buckling and radian reduce relatively when buckling, thereby reduce the probability of 1 surface crack of sheath, and protect buffering subassembly 3 also can receive the wearing and tearing fracture back at sheath 1, play the guard action to inside.

When the cable main part receives external impact or extrusion, buffer block 11 receives the extrusion shrink, but not be in ball 12 under the vertical action of power can be because of the effect of power at spherical groove 13 internal rotation, and simultaneously, location buffering subassembly 4 receives the effect of power, inside spin 402 is because of the effect of power looks mutual rotation each other, these two kinds of settings, thereby can play certain cushioning effect to the effort of external world, and play certain locate action to conductor 8, prevent that it from removing the dislocation, the service life of cable main part has been increased.

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

Claims

1. The utility model provides a mineral insulated cable of nai buckling, includes cable main body, cable main body is from outer to interior sheath (1), armor (5), interior sheath (6) and conductor (8) of having included in proper order, its characterized in that: the utility model discloses a buffer assembly, including sheath (1), buffer layer (4), buffer layer (10), buffer layer (102), buffer layer (401), buffer rubber (401) is inside hollow, and is a plurality of buffer rod (102) is the circumference setting inside rubber layer (101), just buffer rod (102) are thin iron wire, location buffer assembly (4) is including buffer rubber (401) and spin (402), buffer rubber (401) is inside hollow, and a plurality of spin (402) are located inside buffer rubber (401), and each other the mutual contact rotates, be provided with inoxidizing coating (2) between sheath (1) and armor (5), and a protection buffer component (3) is arranged in the protective layer (2).

2. A bend-resistant mineral-insulated cable according to claim 1, characterized in that: protection buffer unit (3) include a plurality of circular circles (301) and horizon bar (302), circular circle (301) are circular iron wire, horizon bar (302) are fixed circular circle (301) surface, and have a plurality of tie points between the two, and the tie point surface has buffer block (11), a buffer block (11) terminal surface with horizon bar (302) are fixed, another terminal surface with sheath (1) internal surface contact.

3. A bend-resistant mineral-insulated cable according to claim 2, characterized in that: the utility model discloses a buffer block, including horizontal pole (302), buffer block (11), circular circle (301) internal surface and the corresponding department of buffer block (11) is provided with rolling assembly, rolling assembly includes ball (12) and spherical groove (13).

4. A bend resistant mineral insulated cable according to claim 3, characterized in that: the inner surface of the circular ring (301) is provided with an open spherical groove (13), the ball (12) is positioned in the spherical groove (13), the inner end surface of the ball is in surface contact with the armor layer (5), and the ball (12) can rotate in the spherical groove (13).

5. A bend-resistant mineral-insulated cable according to claim 1, characterized in that: the protective sleeve (1) is made of rubber, the insulating layer (9) is a rubber sleeve, and the inner protective layer (6) is made of rubber.

6. A bend-resistant mineral-insulated cable according to claim 1, characterized in that: and a filling layer (7) is filled between the outer surface of the buffer layer (10) and the inner surface of the inner sheath layer (6), and the filling layer (7) is mainly polyolefin.