CN216772832U

CN216772832U - Twisting type branch cable of anti-fracture wrapping structure

Info

Publication number: CN216772832U
Application number: CN202122766209.7U
Authority: CN
Inventors: 周晓秋; 戴兴华; 郑光磊
Original assignee: Shanghai Jiaze Cable Group Co ltd
Current assignee: Shanghai Jiaze Cable Group Co ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-06-17
Anticipated expiration: 2031-11-09

Abstract

The utility model provides a twisting type branch cable with an anti-fracture wrapping structure, which comprises a main cable, a branch cable, a connecting piece and a branch sheath, wherein the main cable is formed by twisting a plurality of main cable cores, the branch cable is formed by twisting a plurality of branch cable cores, the main cable cores and the branch cable cores are connected through the connecting piece, and the branch sheath is wrapped at a branch joint of the main cable cores and the branch cable cores. In this application, trunk cable and branch cable all twist through many sinle silks and twist and form, have improved the tensile strength of cable, reduce the cable size, and every trunk sinle silk all separates corresponding branch sinle silk through the connecting piece alone to the combination forms branch cable, can guarantee that branch cable is the multicore structure, even single branch sinle silk goes out the problem, all the other electric cores still can use, avoid branch cable direct damage.

Description

Twisting type branch cable of anti-fracture wrapping structure

Technical Field

The utility model relates to the field of cables, in particular to a twisting type branch cable of an anti-fracture wrapping structure.

Background

Since the pre-branching cable production process is not introduced into China in the last century, due to the characteristics of economy, small occupied effective space, short construction period, superior performance to bus duct construction and the like, with the strong increase of domestic economy, the speed of various infrastructures, basic constructions and particularly real estate development is accelerated, and under the historical environmental conditions, pre-branching cable products are effectively developed in high-rise buildings in China.

The technology for producing the pre-branched cable is originally from abroad, the standard with the branched cable is established by the japan electric wire industry association in the eighties of the last century (JCS No. 376-1980), and although the industry standard for producing the pre-branched cable is also established in China: JB/T10636-2006 rated voltage 0.6/1kV (Um ═ 1.2 kV) copper core plastic insulation prefabricated branch cable. However, the basic content is not changed, and from the perspective of social development, the production process more than thirty years ago has advancement at that time due to the limitations of all conditions at that time. However, with the development of all aspects of society, new materials and new processes are bound to be replaced.

The pre-branching cable is characterized in that an outer protective layer is arranged outside conductor insulating layers of the main cable and the branch cable, and the main cable and the branch cable are connected into a whole by a tap at a branch joint to ensure the insulativity of the main cable and the branch cable. A method for transmitting a pre-branched cable is that an outer sheath and an insulating layer on a section of main cable are stripped on site, and then the cable head of the branch cable with the outer sheath and the insulating layer stripped is connected to a conductor of the main cable. The connection is made by a conductor connector using hydraulic pliers or other means, and finally encapsulated with epoxy or other insulating material. Meanwhile, the existing pre-branching cable is often small in branching quantity, easy to oxidize after long-time work and difficult to adapt to different changing power supply requirements.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a twisting type branch cable with an anti-fracture wrapping structure.

In order to achieve the purpose, the utility model provides a twisting type branch cable with an anti-fracture wrapping structure, which comprises a main cable, a branch cable, a connecting piece and a branch sheath, wherein the main cable is formed by twisting a plurality of main cable cores, the branch cable is formed by twisting a plurality of branch cable cores, the main cable cores and the branch cable cores are connected through the connecting piece, and branch joints of the main cable cores and the branch cable cores are wrapped with the branch sheath.

Furthermore, in the twisting type branch cable of the anti-fracture wrapping structure, the trunk core comprises a trunk conductor, a trunk insulating layer and a trunk protective layer which are arranged from inside to outside, and the branch core comprises a branch conductor, a branch insulating layer and a branch protective layer which are arranged from inside to outside.

Furthermore, in the twisted branch cable of the anti-fracture wrapping structure, the main conductor and the branch conductor are connected through the connecting piece, the end parts of the main insulating layer and the branch insulating layer are clamped and fixed on the inner side of the connecting piece, and the end parts of the main protective layer and the branch protective layer are arranged on the outer side of the connecting piece.

Furthermore, in the twisted branch cable of the anti-fracture wrapping structure, a raised limiting guide block is arranged in the connecting piece and is arranged on the outer sides of the main conductor and the branch conductor.

Furthermore, in the twisting type branch cable of the anti-fracture wrapping structure, the limiting guide block comprises a first guide block, a second guide block and a third guide block, the first guide block is arranged between the main conductor and the inner wall of the connecting piece, the second guide block is arranged between the branch conductor and the inner wall of the connecting piece, and the third guide block is arranged between the main conductor and the branch conductor.

Furthermore, in the twisted branch cable of the anti-fracture wrapping structure, sealant is arranged at the joint of the main protective layer and the branch sheath.

Furthermore, in the twisting type branch cable of the anti-fracture wrapping structure, the main conductor and the branch conductor are single-core, multi-core or twisting type multi-core conductors.

Furthermore, in the twisted branch cable of the anti-fracture wrapping structure, the trunk insulating layer and the branch insulating layer are made of ceramic silicon rubber.

Furthermore, in the twisted branch cable of the anti-fracture wrapping structure, the trunk protective layer and the branch protective layer are any one of LCP, PI and PTFE.

Furthermore, in the twisted branch cable of the anti-fracture wrapping structure, the branch sheath is formed by an adhesive tape and at least one layer of heat-shrinkable sleeve.

Compared with the prior art, the utility model has the following beneficial effects: trunk cable and branch cable all twist through many sinle silks and twist and form, have improved the tensile strength of cable, reduce the cable size, and every trunk sinle silk all separates corresponding branch sinle silk through the connecting piece alone to the combination forms branch cable, can guarantee that branch cable is the multicore structure, even single branch sinle silk goes out the problem, all the other electric cores still can use, avoid branch cable direct damage.

Drawings

FIG. 1 is a schematic structural view of a twisted branch cable of the anti-fracture wrapping structure of the present invention;

FIG. 2 is a schematic structural view of a connection relationship between a main core and a branch core according to the present invention;

fig. 3 is a schematic cross-sectional view of fig. 2.

Wherein: the cable comprises a main cable 1, a main cable core 11, a branch cable 2, a branch cable core 21, a connecting piece 3, a branch sheath 4, a main conductor 51, a main insulating layer 52, a main protective layer 53, a branch conductor 61, a branch insulating layer 62, a branch protective layer 63, a first guide block 71, a second guide block 72, a third guide block 73 and sealant 8.

Detailed Description

The twist-on drop cable of the breakage-proof wrap configuration of the present invention will now be described in greater detail with reference to the schematic drawings, in which preferred embodiments of the present invention are shown, it being understood that those skilled in the art may modify the utility model herein described while still achieving the advantageous effects of the utility model. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the utility model.

In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated without limiting the specific scope of protection of the present invention.

The utility model is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

As shown in fig. 1, the utility model provides a twisting type branch cable with an anti-fracture wrapping structure, which comprises a main cable 1, a branch cable 2, a connecting piece 3 and a branch sheath 4, wherein the main cable 1 is formed by twisting a plurality of main cable cores 11, the branch cable 2 is formed by twisting a plurality of branch cable cores 21, the main cable cores 11 and the branch cable cores 21 are connected through the connecting piece 3, and branch joints of the main cable cores 11 and the branch cable cores 21 are wrapped with the branch sheath 4.

Specifically, as shown in fig. 2 to 3, the main core 11 includes a main conductor 51, a main insulating layer 52 and a main protective layer 53 disposed from inside to outside, and the branch core 21 includes a branch conductor 61, a branch insulating layer 62 and a branch protective layer 63 disposed from inside to outside. Meanwhile, the trunk conductor 51 and the branch conductor 61 are connected through the connector 3, the ends of the trunk insulating layer 52 and the branch insulating layer 62 are both clamped and fixed on the inner side of the connector 3, and the ends of the trunk protective layer 53 and the branch protective layer 63 are both arranged on the outer side of the connector 3.

Further, as shown in fig. 3, a convex position-limiting guide block is provided in the connecting member 3, and the position-limiting guide block is disposed outside the trunk conductor 51 and the branch conductor 61. The plurality of stopper guides in the connector 3 can separate the trunk conductor 51 and the branch conductor 61 without loss and restrict the bending direction thereof. The limiting guide block comprises a first guide block 71, a second guide block 72 and a third guide block 73, the first guide block 71 is arranged between the main conductor 51 and the inner wall of the connecting piece 3, the second guide block 72 is arranged between the branch conductor 61 and the inner wall of the connecting piece 3, and the third guide block 73 is arranged between the main conductor 51 and the branch conductor 61. The connecting piece 3 is of a metal welding structure, and the welding adopts brazing.

Further, as shown in fig. 3, a sealant 8 is provided at the joints of the trunk protective layer 53 and the branch protective layer 63 and the branch sheaths 4, so as to prevent a large gap from existing between the trunk protective layer 53 and the branch protective layer 63 and the branch sheaths 4, thereby exposing the trunk conductors 51 and the branch conductors 61 outside the branch sheaths 4 during the pulling process.

Further, the trunk conductor 51 and the branch conductor 61 are single-core, multi-core, or twisted multi-core conductors, and the twisting direction of the trunk conductor 51 is the left direction, and the branch conductor 61 is provided.

Further, the trunk insulating layer 52 and the branch insulating layer 62 are made of ceramic silicon rubber, and have the advantages of stable structure, reliable insulating performance, excellent fire resistance, safety and reliability.

Further, the trunk protective layer 53 and the branch protective layer 63 are any one of LCP, P I, and PTFE.

Further, the branch sheath 4 is formed by an adhesive tape and at least one layer of heat-shrinkable sleeve, which may be added to two layers. The adhesive tape is positioned on the inner side of the heat-shrinkable sleeve to serve as an insulating layer, the length of the heat-shrinkable sleeve is required to cover and exceed the edge of the adhesive tape serving as the insulating layer, the heat-shrinkable sleeve highly compresses the adhesive tape, so that the adhesive tape fills a gap between the main wire core 11 and the branch wire core 21 and finally extends towards the two ends, and the heat-shrinkable sleeve is high in coverage and insulativity. And the thickness of the branch sheath 4 is not less than the sum of the thicknesses of the trunk insulating layer 52 and the trunk protecting layer 53.

To sum up, in this embodiment, the twisting type branch cable of package structure is twisted around in the fracture of preventing proposing, trunk cable and branch cable all twist through many sinle silks and twist and form, have improved the tensile strength of cable, reduce cable size, and every trunk sinle silk all separates corresponding branch sinle silk through the connecting piece alone, thereby the combination forms branch cable, can guarantee branch cable and be the multicore structure, even single branch sinle silk goes out the problem, all the other electric cores can still use, avoid branch cable direct damage.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides an anti-fracture twists type branch cable around package structure's twisting, its characterized in that, includes trunk cable (1), branch cable (2), connecting piece (3) and branch sheath (4), trunk cable (1) is twisted by many trunk sinle silks (11) and is twisted and form, branch cable (2) are twisted and twist by many branch sinle silks (21) and form, trunk sinle silk (11) and branch sinle silk (21) pass through connecting piece (3) are connected, the branch joint department cladding of trunk sinle silk (11) and branch sinle silk (21) has branch sheath (4).

2. The twisting type branch cable with the anti-fracture wrapping structure according to claim 1, wherein the main wire core (11) comprises a main conductor (51), a main insulating layer (52) and a main protective layer (53) which are arranged from inside to outside, and the branch wire core (21) comprises a branch conductor (61), a branch insulating layer (62) and a branch protective layer (63) which are arranged from inside to outside.

3. The twist-on branch cable with the anti-fracture wrapping structure according to claim 2, wherein the main conductor (51) and the branch conductor (61) are connected through the connecting piece (3), the ends of the main insulating layer (52) and the branch insulating layer (62) are clamped and fixed on the inner side of the connecting piece (3), and the ends of the main protective layer (53) and the branch protective layer (63) are arranged on the outer side of the connecting piece (3).

4. The twist-on type branch cable with the anti-fracture wrapping structure according to claim 3, wherein a raised limiting guide block is arranged in the connecting piece (3), and the limiting guide block is arranged outside the main conductor (51) and the branch conductors (61).

5. The anti-breakage twisted branch cable with the lapping structure according to claim 4, wherein the limiting guide block comprises a first guide block (71), a second guide block (72) and a third guide block (73), the first guide block (71) is arranged between the main conductor (51) and the inner wall of the connecting piece (3), the second guide block (72) is arranged between the branch conductor (61) and the inner wall of the connecting piece (3), and the third guide block (73) is arranged between the main conductor (51) and the branch conductor (61).

6. The twist-on branch cable with the anti-breaking lapping structure according to claim 3, wherein the joints of the main protective layer (53) and the branch protective layers (63) and the branch sheaths (4) are provided with sealant (8).

7. The twist-on branch cable with the anti-fracture wrapping structure according to claim 2, wherein the main conductor (51) and the branch conductors (61) are single-core, multi-core or twist-on multi-core conductors.

8. The twist-on drop cable with anti-breaking wrapping structure according to claim 2, wherein the main insulating layer (52) and the branch insulating layer (62) are made of ceramic silicone rubber.

9. The twist-on branch cable with anti-breaking lapping structure as claimed in claim 2, wherein the main protective layer (53) and the branch protective layer (63) are any one of LCP, PI and PTFE.

10. The twist-on branch cable of an anti-fracture wrapping structure according to claim 1, wherein the branch sheath (4) is formed by an adhesive tape and at least one layer of heat-shrinkable tubing.