CN216871625U

CN216871625U - Cable suitable for control circuit

Info

Publication number: CN216871625U
Application number: CN202123217355.0U
Authority: CN
Inventors: 李嘉楠
Original assignee: LOROM PRECISION INDUSTRY (SHENZHEN) CO LTD
Current assignee: LOROM PRECISION INDUSTRY (SHENZHEN) CO LTD
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-07-01
Anticipated expiration: 2031-12-21

Abstract

The utility model discloses a cable suitable for a control circuit, which comprises a protective shell, wherein the bottom surface of the protective shell is connected with a bottom plate, two sides of the protective shell are respectively provided with a sleeve hole, the positions of the two sleeve holes correspond to each other, a protective layer A is arranged inside the protective shell, a cable body is arranged inside the protective layer A, the outer circular wall surface of the protective layer A is sleeved with the sleeve holes, the top surface of the bottom plate is connected with two connecting blocks A, one side of each connecting block A is provided with a connecting hole A, the outer circular wall surface of the protective layer A is sleeved with the connecting hole A, a breaking prevention component for preventing the protective layer A from being broken is arranged inside the protective shell, the protective layer A can be accidentally touched and pulled by people when the protective layer A is used in a dark environment such as a tunnel, the protective layer A which is arranged in a bending and winding mode inside the protective shell is straightened at the moment that the protective layer A is pulled, the tensile force of the outside on the protective layer A is buffered in the straightening process.

Description

Cable suitable for control circuit

Technical Field

The utility model relates to the technical field of cables, in particular to a cable suitable for a control circuit.

Background

The wire and cable industry is the second industry in China next to the automobile industry, the product variety satisfaction rate and the domestic market share of the wire and cable industry exceed nine percent, wherein the control cable is widely applied to industrial and mining enterprises and energy transportation departments, the total output value of the wire and cable in China exceeds the United states at present, and the control cable becomes the first wire and cable producing country in the world.

However, the cables on the market still have the following problems:

for example, chinese patent publication No. CN207867914U proposes a bus cable for a tunnel, which combines a signal cable for a control signal and a power cable for power transmission into a single multi-core cable structure to reduce investment costs and maintenance and management costs for a building developer, but in the actual use, the cable may be inadvertently touched and pulled by a person when used in a dark environment such as a tunnel, and the cable may be directly broken without a buffering process when pulled, thereby causing a power transmission interruption.

Aiming at the problems, the novel design is carried out on the basis of the original cable.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a cable suitable for a control line, so as to solve the problems that the cable proposed in the above-mentioned background art may be touched and pulled by a person or unintentionally when used in a dark environment such as a tunnel, and the cable may be broken directly when pulled due to no buffering process, thereby causing a power transmission interruption.

In order to achieve the purpose, the utility model provides the following technical scheme: a cable suitable for a control line comprises a protective shell, wherein a bottom plate is connected to the bottom surface of the protective shell, two sleeving holes are respectively formed in two sides of the protective shell, the positions of the two sleeving holes are corresponding, a protective layer A is arranged in the protective shell, a cable body is arranged in the protective layer A, the outer circular wall surface of the protective layer A is sleeved with the sleeving holes, two connecting blocks A are connected to the top surface of the bottom plate, a connecting hole A is formed in one side of each connecting block A, the outer circular wall surface of the protective layer A is sleeved with the connecting hole A, a breaking-preventing component for preventing the protective layer A from being broken is arranged in the protective shell, the breaking-preventing component comprises a limiting plate, the limiting plate is connected to the top surface of the bottom plate, a limiting hole is formed in one side of the limiting plate, and a connecting block B is arranged in the protective shell, connecting hole B has been seted up to one side of connecting block B, connecting hole B with the excircle wall of inoxidizing coating A cup joints mutually, spacing post has been cup jointed to the inside in spacing hole, the one end of spacing post with one side of connecting block B is connected, the outer disc wall of spacing post has cup jointed the spring, the one end of spring with the limiting plate is connected, the other end of spring with connecting block B is connected.

Preferably, one end of the limiting column is connected with a limiting block.

Preferably, a flame-retardant sheath is sleeved inside the protective layer A.

Preferably, a protective layer D is sleeved inside the flame-retardant sheath.

Preferably, a protective layer C is sleeved inside the protective layer D.

Preferably, the protective layer B is sleeved inside the protective layer C.

Preferably, a puncture-proof layer is filled between the protective layer B and the cable body.

Compared with the prior art, the utility model has the beneficial effects that: the cable suitable for the control circuit is provided with the protective layer A, the protective layer A can be touched and pulled by people and carelessness when being used in a tunnel and other dark environments, at the moment that the protective layer A is pulled, the protective layer A which is arranged in the protective shell in a bending and winding way is straightened, the pulling force of the outside on the protective layer A is buffered in the straightening process, the interruption of power transmission caused by the direct breakage of the protective layer A without the buffering process when the protective layer A is pulled is avoided, by arranging the limiting block, the limiting block prevents the limiting column from falling off when moving in the limiting hole by contacting one side of the limiting plate, by arranging the flame-retardant sheath which is a polyolefin thermoplastic composite material containing a flame retardant, the flame-retardant sheath does not release halogen acid and has the characteristic of self-extinguishing, can greatly reduce the emission of toxic corrosive gas and the generation of smoke, and the low toxicity of the smoke reduces the harm to workers.

Through setting up inoxidizing coating D, inoxidizing coating D is the steel band around the covering, can improve inoxidizing coating D inner line's bulk strength, through setting up inoxidizing coating C, inoxidizing coating C is around the covering for the packing that the non-woven fabrics was made, it is dampproofing to have, pliable and tough, fire-retardant characteristics, can ensure that the inside circuit of fire-retardant sheath can not break off by tensile in-process, through setting up inoxidizing coating B, inoxidizing coating B is the insulating cover that polyvinyl chloride made, better mechanical properties and tensile strength have, effectively avoid the cable body to break off by tensile in-process, through setting up puncture-proof layer, puncture-proof layer is the filler that thermoplastic resin made, its toughness is higher, can prevent that the cable body from producing the burr when the bending simultaneously.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the bottom plate structure of the present invention;

FIG. 3 is a schematic structural diagram of a connecting block A according to the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 3;

fig. 5 is an enlarged view of the structure at B in fig. 3.

In the figure: 1. a protective shell; 2. a base plate; 3. sleeving holes; 4. a protective layer A; 5. a cable body; 6. a limiting plate; 7. a connecting block A; 8. a connecting hole A; 9. a limiting hole; 10. a limiting column; 11. a spring; 12. connecting block B; 13. a connecting hole B; 14. a limiting block; 15. a protective layer B; 16. a protective layer C; 17. a protective layer D; 18. a flame retardant jacket; 19. and (4) a puncture-proof layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the present invention provides a technical solution: a cable suitable for a control circuit comprises a protective shell 1, a bottom plate 2 is fixedly installed on the bottom surface of the protective shell 1, two sides of the protective shell 1 are respectively provided with a sleeve hole 3, the positions of the two sleeve holes 3 are corresponding, a protective layer A4 is arranged inside the protective shell 1, a protective layer A4 is made of insulating rubber, a cable body 5 is arranged inside the protective layer A4, the outer circle wall surface of the protective layer A4 is movably sleeved with the sleeve holes 3, the top surface of the bottom plate 2 is fixedly provided with two connecting blocks A7, one side of the connecting block A7 is provided with a connecting hole A8, the outer circle wall surface of the protective layer A4 is movably sleeved with the connecting hole A8, a breaking prevention component for preventing the protective layer A4 from being broken is arranged inside the protective shell 1 and comprises a limiting plate 6, the limiting plate 6 is fixedly installed on the top surface of the bottom plate 2, one side of the limiting plate 6 is provided with a limiting hole 9, a connecting block B12 is arranged inside the protective shell 1, connecting hole B13 has been seted up to one side of connecting block B12, connecting hole B13 cup joints with the excircle wall activity of inoxidizing coating A4, spacing post 10 has been cup jointed in the inside activity of spacing hole 9, one end of spacing post 10 and one side fixed mounting of connecting block B12, spring 11 has been cup jointed to the excircle wall fixed of spacing post 10, spring 11's one end and limiting plate 6 fixed mounting, spring 11's the other end and connecting block B12 fixed mounting, inoxidizing coating A4 is straightened in-process, connecting block B12 removes to limiting plate 6's direction, spring 11 is in the stress state this moment, inoxidizing coating A4 of protecting casing 1 inside passes cup joint hole 3 and extends to the outside of protecting casing 1, prevent inoxidizing coating A4 by direct breaking.

Referring to fig. 3 and 4, in order to prevent the limiting post 10 from falling off when moving inside the limiting hole 9, a limiting block 14 is fixedly installed at one end of the limiting post 10, and when the limiting block 14 contacts the limiting plate 6, the limiting post 10 stops moving.

Referring to fig. 5, in order to reduce the emission of toxic corrosive gas and the generation of smoke, a flame retardant jacket 18 is fixedly sleeved inside the protective layer a4, and the flame retardant jacket 18 is a polyolefin thermoplastic composite material containing a flame retardant and has the characteristics of not releasing halogen acid and self-extinguishing.

Referring to fig. 5, in order to improve the overall strength of the circuit inside the protective layer D17, a protective layer D17 is fixedly sleeved inside the flame-retardant sheath 18, and the protective layer D17 is a wrapping layer made of steel tape.

Referring to fig. 5, in order to ensure that the circuit inside the flame-retardant sheath 18 is not broken during the stretching process, a protective layer C16 is fixedly sleeved inside the protective layer D17, and the protective layer C16 is a filling wrapping made of non-woven fabric.

Referring to fig. 5, in order to effectively prevent the cable body 5 from breaking during the stretching process, a protective layer B15 is fixedly sleeved inside the protective layer C16, and the protective layer B15 is an insulating sleeve made of polyvinyl chloride, and has better mechanical properties and tensile strength.

Referring to fig. 5, in order to prevent the cable body 5 from generating burrs when being bent, the stab-resistant layer 19 is filled between the protective layer B15 and the cable body 5, and the stab-resistant layer 19 is a filler made of thermoplastic resin, has high toughness, and can be tightly wrapped on the surface of the cable body 5.

The working principle is as follows: when the anti-pulling device is used, the protective layer A4 can be touched and pulled by people unintentionally when being used in a dark environment such as a tunnel, at the moment when the protective layer A4 is pulled, the protective layer A4 which is arranged in the protective shell 1 in a bending and winding mode is pulled straight, in the process that the protective layer A4 is pulled straight, the connecting block B12 moves towards the direction of the limiting plate 6, at the moment, the spring 11 is in a stressed state, the protective layer A4 in the protective shell 1 penetrates through the sleeving hole 3 and extends to the outside of the protective shell 1, the protective layer A4 is prevented from being pulled off directly, when external pulling force disappears, the spring 11 releases elastic force, the connecting block B12 is popped away from the direction of the limiting plate 6, when the limiting block 14 contacts the limiting plate 6, the limiting column 10 stops moving, and at the moment, the protective layer A4 in the protective shell 1 recovers the bending and winding mode to deal with the next pulling.

Through setting up cable body 5, cable body 5 is used for transmitting electric power or signal, fire-retardant sheath 18 is a polyolefin thermoplasticity combined material who contains the fire retardant, fire-retardant sheath 18 does not release haloid acid, have from putting out the characteristics, inoxidizing coating D17 is the steel band around the covering, improve the bulk strength of inoxidizing coating D17 internal line, inoxidizing coating C16 is the packing of non-woven fabrics making around the covering, guarantee that fire-retardant sheath 18 internal line can not break by the tensile in-process, inoxidizing coating B15 is the insulating cover that polyvinyl chloride made, better mechanical properties and tensile strength have, avoid cable body 5 to break by the tensile in-process, puncture-proof layer 19 is the filler that thermoplastic resin made, its toughness is higher, can prevent cable body 5 production burr when the bending simultaneously.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A cable suitable for control lines, comprising a protective casing (1), characterized in that: the bottom surface of the protective shell (1) is connected with a bottom plate (2), two sleeving holes (3) are respectively formed in two sides of the protective shell (1), the two sleeving holes (3) are corresponding in position, a protective layer A (4) is arranged in the protective shell (1), a cable body (5) is arranged in the protective layer A (4), the excircle wall surface of the protective layer A (4) is sleeved with the sleeving holes (3), the top surface of the bottom plate (2) is connected with two connecting blocks A (7), a connecting hole A (8) is formed in one side of each connecting block A (7), the excircle wall surface of the protective layer A (4) is sleeved with the connecting hole A (8), a breaking-preventing component for preventing the protective layer A (4) from being broken is arranged in the protective shell (1), the breaking-preventing component comprises a limiting plate (6), and the limiting plate (6) is connected to the top surface of the bottom plate (2), spacing hole (9) have been seted up to one side of limiting plate (6), the inside of protecting crust (1) is provided with connecting block B (12), connecting hole B (13) have been seted up to one side of connecting block B (12), connecting hole B (13) with the excircle wall of inoxidizing coating A (4) cup joints mutually, spacing post (10) have been cup jointed to the inside of spacing hole (9), the one end of spacing post (10) with one side of connecting block B (12) is connected, the excircle wall of spacing post (10) has cup jointed spring (11), the one end of spring (11) with limiting plate (6) are connected, the other end of spring (11) with connecting block B (12) are connected.

2. A cable adapted for use in a control line, according to claim 1, wherein: one end of the limiting column (10) is connected with a limiting block (14).

3. A cable adapted for use in a control line, according to claim 1, wherein: and a flame-retardant sheath (18) is sleeved in the protective layer A (4).

4. A cable adapted for use in a control line, according to claim 3, wherein: and a protective layer D (17) is sleeved in the flame-retardant sheath (18).

5. A cable adapted for use in a control line, according to claim 4, wherein: and a protective layer C (16) is sleeved in the protective layer D (17).

6. A cable adapted for use in a control line, according to claim 5, wherein: and a protective layer B (15) is sleeved in the protective layer C (16).

7. A cable adapted for use in a control line, according to claim 6, wherein: and a puncture-proof layer (19) is filled between the protective layer B (15) and the cable body (5).