CN112466526A

CN112466526A - High-strength anti-winding load cable

Info

Publication number: CN112466526A
Application number: CN202011292253.2A
Authority: CN
Inventors: 陈彦; 王振金; 陈颖; 王焱; 张海平
Original assignee: Hunan Valin Wire and Cable Co Ltd
Current assignee: Hunan Valin Wire and Cable Co Ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-03-09

Abstract

The invention discloses a high-strength bending-resistant load-bearing cable which comprises a cable core, a braided layer and a sheath, wherein the braided layer and the sheath are sequentially provided with a cable core wrapped from inside to outside, the cable core is formed by twisting an insulating wire core and tensile filling, the insulating wire core comprises a conductor and an insulating layer wrapped outside the conductor, and the high-strength bending-resistant load-bearing cable comprises a frequently-moving tensile conductor, a high-strength insulating layer, a bending-resistant tensile loose-woven protective layer, a tensile filling, bending-resistant winding and tensile sheath, so that the cable has the functions of frequent bending and load bearing, the service life of the cable in the states of frequent bending and load bearing is prolonged, accidents caused by core breakage and short circuit of the cable in the using process are reduced, and the cable is particularly suitable for being used in places such as a winding drum, a travelling crane and the like.

Description

High-strength anti-winding load cable

Technical Field

The invention relates to the technical field of cables, in particular to a high-strength anti-bending load-bearing cable.

Background

Along with the development of industrial technology, hoisting and port machinery equipment is developed faster and more, the frequency of use and the requirements of a winding-resistant load-bearing cable are higher and higher, and the problem of core breaking or short circuit often occurs in the use process. The cable structure commonly used at present is mainly characterized in that a steel wire with the size similar to that of a conductor core is added in the cable, extruded and insulated, and twisted together with other insulated cores to be used for tensile strength. Because the hardness and the strength of the steel wire are far larger than those of the conductor, the steel wire extrudes and damages the adjacent insulating wire cores to cause short circuit under the condition of winding and stretching for a period of time, and because the softness of the steel wire is far larger than those of the conductor wire cores, the winding degree of the conductor is different, and the conductor is easy to break.

Disclosure of Invention

The invention aims to solve the problem of core breakage or short circuit of a winding-resistant load-bearing cable in the prior art, and provides a winding-resistant high-strength winding-resistant load-bearing cable capable of bearing certain tensile force.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an anti heavy burden cable that winds of high strength includes cable core, weaving layer and sheath have in proper order and wrap up the cable core to outer, the cable core is filled the transposition by insulation core and tensile and forms, insulation core includes the conductor and wraps up in the outside insulating layer of conductor.

Further, the conductor is formed by mixing and stranding aramid fibers located in the middle and copper wires located outside the aramid fibers, the diameter of each copper wire is 0.2mm-0.5mm, and the copper wires can be tinned copper wires. The pitch ratio of the conductor is not more than 6D, and the flexibility and the tensile resistance of the conductor are ensured.

Furthermore, the insulating layer is formed by extruding a butyronitrile rubber-plastic mixture or a corresponding high polymer material, the space between the insulating layer and the conductor is compact in extrusion, and the thickness of the insulating layer is 0.2mm larger than that of the insulating layer specified by GB/T12706 and GB/T9330.

Further, the weaving layer adopts 1000D and above aramid fiber silk to weave and forms, forms resistant winding tensile and dredges the protective layer of weaving, and the weaving clearance of weaving layer is not more than the three times of sheath external diameter size, and the weaving layer can prevent the deformation of insulating core after frequent bending, plays the effect of constraint insulating core.

Furthermore, the tensile filling is located in the middle of the cable core, and the tensile filling is formed by twisting more than 3 1000D aramid fibers and can bear the weight of the cable and the weight of accessory equipment pulled by the cable.

Furthermore, the sheath is formed by extruding a butyronitrile rubber-plastic mixture, polyether TPU or a corresponding high polymer material, the sheath and the cable core need to be densely extruded, and the materials are selected according to the use occasions of users. The material of sheath is tensile wear-resistant material, weaving layer embedding sheath in situ with, sheath and weaving layer make up into an organic whole, reach wear-resistant anti-bending and prevent the effect of insulating core deformation.

The invention has the beneficial effects that: this anti heavy load cable that twists of high strength includes frequently removing type tensile conductor, high strength insulating layer, anti tensile loose the protective layer of weaving, tensile packing and anti winding, tensile sheath for this cable has the function of anti frequent winding and heavy burden, improves the cable in frequent winding and the life-span under the heavy burden state, reduces the cable and breaks the core in the use, the accident that the short circuit caused, and specially adapted makes a round trip to twist, bear dead weight etc. places use at reel, driving etc..

Drawings

FIG. 1 is a schematic view of the present high strength, bend-resistant cable;

fig. 2 is a schematic structural diagram of a cross section of the high-strength anti-bending load cable.

In the figure: 1. a wire; 2. an insulating layer; 3. filling in a tensile manner; 4. weaving layer; 5. a sheath; 11. aramid fiber filaments; 12. copper wire.

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.

Example 1

Referring to fig. 1 and 2, a high-strength anti-bending load cable comprises a cable core, a weaving layer 4 and a sheath 5, wherein the weaving layer 4 and the sheath 5 are sequentially wrapped with the cable core from inside to outside, the cable core is formed by twisting an insulation wire core and a tensile filler 3, and the insulation wire core comprises a conductor 1 and an insulation layer 2 wrapped outside the conductor 1.

Further, conductor 1 is formed by aramid fiber silk 11 that is located the middle part and the mixed hank system of copper line 12 that is located aramid fiber silk 11 outside of aramid fiber silk 11, the diameter of copper line is 0.2mm, and the copper line here is the tinned wire, and conductor 1's pitch ratio is not more than 6D.

Furthermore, the insulating layer 2 is formed by extruding and wrapping the space between the insulating layer 2 and the conductor 1, wherein the insulating layer 2 is made of a nitrile rubber-plastic mixture, and the thickness of the insulating layer 2 is 0.2mm larger than that of the insulating layer specified by GB/T12706 and GB/T9330.

Furthermore, tensile filler 3 is located the cable core middle part, tensile filler 3 is twisted by 1000D aramid fiber silk more than 3, can bear the weight of cable self weight and the weight of the subsidiary equipment that the cable was drawn.

Further, weaving layer 4 adopts 1000D and above aramid fiber silk to weave and forms, forms resistant winding tensile and dredges the protective layer of weaving, and the weaving clearance of weaving layer 4 is not more than the three times of 5 external diameter of sheath size, and weaving layer 4 can prevent the deformation of insulating core after frequent bending, plays the effect of constraint insulating core.

Furthermore, the sheath 5 is made of a butyronitrile rubber-plastic mixture, the woven layer 3 is embedded into the sheath 5, and the sheath 5 and the woven layer 3 are combined into a whole, so that the effects of resisting abrasion and bending and preventing the deformation of the insulated wire core are achieved.

The high-strength anti-bending load cable in the embodiment has the functions of resisting frequent bending and load, the service life of the cable in the frequent bending and load states is prolonged, accidents caused by core breakage and short circuit of the cable in the using process are reduced, and the high-strength anti-bending load cable is particularly suitable for being used in places such as winding drums, travelling cranes and the like, and the load.

Example 2

Further, conductor 1 is formed by aramid fiber silk 11 that is located the middle part and the mixed hank system of copper line 12 that is located aramid fiber silk 11 outside of aramid fiber silk 11, the diameter of copper line is 0.3mm, and the copper line here is the tinned wire, and conductor 1's pitch ratio is not more than 6D.

Further, the sheath 5 is made of polyether TPU, the weaving layer 3 is embedded into the sheath 5, and the sheath 5 and the weaving layer 3 are combined into a whole, so that the effects of resisting abrasion and bending and preventing the deformation of the insulated wire core are achieved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides an anti heavy burden cable that winds of high strength, its characterized in that, includes cable core, weaving layer (4) and sheath (5) have in proper order and wrap up the cable core to outer, the cable core is formed by insulating sinle silk and tensile packing (3) transposition, insulating sinle silk includes conductor (1) and wraps up in insulating layer (2) of conductor (1) outside.

2. A high strength bending load-carrying cable according to claim 1, wherein said conductor (1) is made by twisting a mixture of aramid filaments (11) located in the middle and copper wires (12) of aramid filaments (11) located outside the aramid filaments (11), and the pitch ratio of the conductor (1) is not more than 6D.

3. A high strength anti-bending load-carrying cable according to claim 1, wherein the material of said insulating layer (2) is nitrile rubber-plastic mixture.

4. A high strength and bending load-carrying cable as claimed in claim 1, wherein said braided layer (4) is braided with 1000D or more aramid filaments, and the braiding gap of the braided layer (4) is not more than three times the outer diameter of the sheath (5).

5. The high-strength anti-bending load-carrying cable according to claim 1, wherein the tensile filler (3) is positioned in the middle of the cable core, and the tensile filler (3) is formed by twisting more than 3 1000D aramid fibers.

6. A high strength anti-bending load-carrying cable according to claim 1, wherein the material of the sheath (5) is nitrile rubber-plastic mixture or polyether TPU.