A kink-resistant tow cable

Abstract

The utility model relates to a kind of anti-wire breakage tow cable, including cable core and sheath, sheath includes outer sheath layer and inner sheath layer, cable core includes tensile unit in the center of cable core, two oppositely arranged power line core units and two oppositely arranged shield signal units are arranged between tensile unit outer and inner sheath layer, each shield signal unit is located between two power line core units respectively, and each shield signal unit is tangent with tensile unit and two power line core units respectively;Each shield signal unit includes reinforcing rope, reinforcing rope is all provided with a plurality of shield signal line cores distributed along the circumference of reinforcing rope outside, a plurality of shield signal line cores are collectively coated with first composite braided shielding layer outside, each shield signal line core includes two first conductors, each first conductor is extruded with first insulating layer outside, two first insulating layers are also collectively coated with second composite braided shielding layer outside, the utility model can make that tow cable is not easy to distort, not easy to break line.

Description

Technical Field

[0001] This utility model belongs to the field of cable technology, and in particular relates to a cable that is resistant to wire breakage and dragging. Background Technology

[0002] Currently, existing tow cables need to move frequently to follow the movement of electrical equipment. During use, under the action of external forces, the tow cable will be pulled and twisted repeatedly, and the outer layer of the tow cable will be worn. However, because the existing tow cables are not compact in structure, they are prone to twisting and deformation during use. Secondly, the wear resistance of the outer layer of the existing tow cables also needs to be improved, which can easily cause the outer layer of the tow cable to crack, leading to the breakage of the tow cable. Therefore, there are still shortcomings and deficiencies in the existing technology. Utility Model Content

[0003] The purpose of this invention is to provide a cable that is protected against breakage and cable dragging, in order to solve the problems mentioned in the background art.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows:

[0005] A cable designed to prevent breakage and dragging includes a cable core and a sheath covering the cable core. The sheath includes an outer sheath layer and an inner sheath layer arranged concentrically. The cable core includes a tensile unit located at the center of the cable core. Two opposing power core units and two opposing shielding signal units are disposed between the tensile unit and the inner sheath layer. Each shielding signal unit is located between the two power core units and is tangent to both the tensile unit and the two power core units.

[0006] Each shielded signal unit includes a reinforcing rope, and several shielded signal cores are arranged around the reinforcing rope in a circumferential direction. The shielded signal cores are collectively covered with a first composite braided shielding layer. Each shielded signal core includes two first conductors, and each first conductor is covered with a first insulation layer. Furthermore, the two first insulation layers of each shielded signal core are collectively covered with a second composite braided shielding layer.

[0007] Furthermore, both the first composite braided shielding layer and the second composite braided shielding layer are made of copper wire and conductive strip braided together.

[0008] Furthermore, the reinforcing rope is a nylon rope.

[0009] Furthermore, the inner sheath layer is made of polyvinyl chloride resin elastic material.

[0010] Furthermore, the outer sheath layer is made of polyurethane material.

[0011] Furthermore, the tensile unit comprises a steel wire and a steel wire protective layer covering the steel wire, wherein the steel wire protective layer is an environmentally friendly polyvinyl chloride elastomer sheath layer.

[0012] Furthermore, each power core unit includes several power cores, which are all covered by a wrapping layer. Each power core includes a second conductor, and each second conductor is covered with a second insulation layer.

[0013] Furthermore, both the first insulating layer and the second insulating layer are made of elastomeric material.

[0014] The beneficial effects of this utility model by adopting the above technical solution are as follows:

[0015] This invention, by incorporating a tensile-resistant unit, enables the tow cable to possess excellent tensile strength, making it less prone to twisting, deformation, and breakage. Secondly, since the two power core units and two shielded signal units are arranged opposite each other, and each shielded signal unit is tangent to the tensile-resistant unit and the two power core units respectively, the overall structure of the tow cable is compact and rationally distributed. This improves the balance of force under use, thus reducing the tow cable's tendency to twist and deform under external forces. Finally, by designing the tow cable's sheath as a double-layer structure, the thickness of the sheath is increased, improving the tow cable's wear resistance and preventing cracking of the outer layer. In summary, this invention makes the tow cable less prone to twisting, deformation, and breakage. Furthermore, when the tow cable is energized, the shielded signal unit, comprising two layers of composite braided shielding, reduces electromagnetic interference to the outside world. Simultaneously, it also reduces the influence of external electromagnetic fields on the inside of the tow cable, resulting in strong signal transmission. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Reference numerals: 1. Outer sheath layer; 2. Inner sheath layer; 3. Tensile unit; 31. Steel wire; 32. Steel wire protective layer; 4. Power core unit; 41. Wrapping layer; 42. Second conductor; 43. Second insulation layer; 5. Shielded signal unit; 51. Reinforcing rope; 52. Second composite braided shielding layer; 53. First composite braided shielding layer; 54. First conductor; 55. First insulation layer. Detailed Implementation

[0018] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0019] like Figure 1As shown, this utility model provides a cable designed to prevent wire breakage and dragging, comprising a cable core and a sheath covering the cable core. The sheath includes an outer sheath layer 1 and an inner sheath layer 2 arranged concentrically. The cable core includes a tensile strength unit 3 located at the center of the cable core. Between the tensile strength unit 3 and the inner sheath layer 2, two opposing power core units 4 and two opposing shielding signal units 5 are arranged. Each shielding signal unit 5 is located between two power core units 4, and each shielding signal unit 5 is tangent to the tensile strength unit 3 and the two power core units 4. The two power core units 4, the two shielding signal units 5, and the tensile strength unit 3 are twisted together in the same direction to form the cable core. Specifically, each power core unit 4 includes several power cores, and the several power cores are collectively covered by a wrapping layer 41, which is a PET film wrapping layer with high tensile strength and good tear resistance. Each power core includes a second conductor 42, and each second conductor 42 is extruded with a second insulation layer 43.

[0020] Specifically, by setting the tensile unit 3, the tow cable can have good tensile performance, making it less prone to twisting, deformation, and breakage. Secondly, since the two power core units 4 and the two shielded signal units 5 are arranged opposite each other, and each shielded signal unit 5 is tangent to the tensile unit 3 and the two power core units 4 respectively, the overall structure of the tow cable is compact and rationally distributed. This improves the balance of the tow cable under stress during use, and makes it less prone to twisting and deformation under external force. Finally, setting the sheath of the tow cable as a double-layer structure can increase the thickness of the sheath, thereby improving the wear resistance of the tow cable and making the outer layer of the tow cable less prone to cracking. In summary, this utility model can make the tow cable less prone to twisting, deformation, and breakage.

[0021] In addition, each shielded signal unit 5 includes a reinforcing rope 51, which is made of nylon. Nylon rope has good flexibility and tensile strength, making the tow cable less prone to breakage and preventing it from breaking due to external forces during use. Several shielded signal cores are arranged around the reinforcing rope 51, distributed circumferentially. These shielded signal cores are collectively covered by a first composite braided shielding layer 53. Each shielded signal core includes two first conductors 54, each first conductor 54 is covered by a first insulation layer 55, and each shielded signal core's two first insulation layers 55 are also collectively covered by a second composite braided shielding layer 52, which is elliptical in shape. Both the first composite braided shielding layer 53 and the second composite braided shielding layer 52 are made of copper wire and conductive strip braided together. Specifically, by setting two composite braided shielding layers, electromagnetic interference to the outside world can be reduced when the tow cable is energized. Simultaneously, the influence of external electromagnetic fields on the inside of the tow cable can be reduced, resulting in stronger signal transmission.

[0022] Furthermore, the inner sheath layer 2 is made of polyvinyl chloride resin elastic material, specifically, polyvinyl chloride resin elastic material is also known as PV elastic material, which has flame retardant, high modulus and low temperature resistance properties; while the outer sheath layer 1 is made of polyurethane material, specifically, polyurethane material is also known as PUR material, which has flame retardant, high modulus, high elasticity and wear resistance properties. By setting the sheath of the trailing cable to a double-layer structure, and selecting different materials for the inner sheath layer 2 and the outer sheath layer 1 according to their distribution positions, the wear resistance of the trailing cable can be improved, so that the outer layer of the trailing cable is not easy to crack.

[0023] Furthermore, such as Figure 1 As shown, the tensile unit 3 consists of a steel wire 31 and a steel wire protective layer 32 covering the steel wire 31. The steel wire protective layer 32 is an environmentally friendly polyvinyl chloride elastomer sheath layer. Specifically, the steel wire 31 is made of multiple strands of fine and soft steel wires twisted together. By setting the tensile unit 3, the tow cable can have good tensile performance. In addition, during use, the load can be borne by the tensile unit 3, so that the tow cable is not easily twisted, deformed, or broken.

[0024] Furthermore, both the first insulation layer 55 and the second insulation layer 43 are made of elastomer material. Specifically, the elastomer material can be nitrile composite elastomer or PV elastomer material. In addition, both the first conductor 54 and the second conductor 42 are made of multiple strands of Category 5 oxygen-free copper wire or multiple strands of Category 6 oxygen-free copper wire. Category 5 or Category 6 oxygen-free copper wire has excellent conductivity, and the wire diameter is thinner and more flexible. The gaps between the individual wires in the conductor are smaller, which gives the drag cable good flexibility and bending resistance.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cable designed to prevent breakage and dragging, comprising a cable core and a sheath covering the cable core, characterized in that: The sheath includes an outer sheath layer and an inner sheath layer arranged concentrically. The cable core includes a tensile unit located at the center of the cable core. Two opposing power core units and two opposing shielding signal units are arranged between the tensile unit and the inner sheath layer. Each shielding signal unit is located between the two power core units and is tangent to the tensile unit and the two power core units. Each shielded signal unit includes a reinforcing rope, and several shielded signal cores are arranged around the reinforcing rope in a circumferential direction. The shielded signal cores are collectively covered with a first composite braided shielding layer. Each shielded signal core includes two first conductors, and each first conductor is covered with a first insulation layer. Furthermore, the two first insulation layers of each shielded signal core are collectively covered with a second composite braided shielding layer.

2. The anti-breakage cable according to claim 1, characterized in that: Both the first composite braided shielding layer and the second composite braided shielding layer are made of copper wire and conductive strip braided together.

3. The anti-breakage cable according to claim 1, characterized in that: The reinforcing rope is a nylon rope.

4. The anti-breakage cable according to claim 1, characterized in that: The inner sheath layer is made of polyvinyl chloride resin elastic material.

5. The anti-breakage cable according to claim 1, characterized in that: The outer sheath is made of polyurethane material.

6. The anti-breakage cable according to claim 1, characterized in that: The tensile unit comprises a steel wire and a steel wire protective layer covering the steel wire. The steel wire protective layer is an environmentally friendly polyvinyl chloride elastomer sheath material.

7. The anti-breakage cable according to claim 1, characterized in that: Each power conductor unit includes several power conductors, which are all covered by a wrapping layer. Each power conductor includes a second conductor, and each second conductor is covered by a second insulation layer.

8. The anti-breakage cable according to claim 7, characterized in that: Both the first insulating layer and the second insulating layer are made of elastomeric material.

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