CN211016574U - A torsion-resistant high-flexible cable - Google Patents

Abstract

The utility model discloses a torsion-resistant high-flexible cable, which comprises a cable core, an elastic wrapping layer, an inner sheath layer, a toughening layer, a torsion-resistant layer, a buffer layer and an outer sheath layer sequentially wrapped around the cable core and anti-crack layer; the cable core includes a wire core and a reinforcing core, the wire cores are twisted around the reinforcing core, the reinforcing core is twisted by an elastic core, and an elastic Filling layer; the wire core includes a conductor and an insulating layer, a shielding layer and a fire-resistant and flame-retardant layer that are sequentially wrapped around the conductor; the middle of the toughening layer is evenly spaced with installation holes, and springs are arranged in the installation holes; the torsion layer is formed by the interval The elastic column is composed of the set elastic column, and the two ends of the elastic column are respectively fixedly connected with the toughening layer and the buffer layer; the buffer hole is opened in the middle of the buffer layer. The utility model improves the problems of poor torsion resistance, poor flexibility and short service life of cables in the prior art. The utility model has the advantages of good torsion resistance, good flexibility and long service life.

Description

A torsion-resistant high-flexible cable

technical field

The utility model relates to the technical field of cables, in particular to a torsion-resistant high-flexible cable.

Background technique

A cable is a wire that transmits electricity or information from one place to another, made of one or more conductors insulated from each other and an outer insulating protective layer. There are many types of cables, including power cables, control cables, high temperature cables, computer cables, signal cables, aluminum alloy cables and other cables. They are all composed of single or multi-strand wires and insulating layers, which are used to connect circuits, appliances, etc. Some applications require frequent movement, bending and twisting of cables, such as cables for wind power generation. Therefore, cables with high flexibility and torsion resistance are required.

Existing cables still have deficiencies in flexibility. The cable has a large bending radius, which often fails to meet the bending requirements of the machine and equipment, which makes it difficult to restore the cable after excessive bending, as well as damage and breakage, which affects the use of the cable. Some cables also have deficiencies in torsion resistance. When the cables are frequently twisted and bent with the machinery and equipment, the cables are prone to breakage and breakage, resulting in exposed inner cores and conductors of the cable, which are prone to electric shock and fire accidents. short service life.

In view of the above technical problems, the utility model discloses a torsion-resistant high-flexible cable, which has the advantages of good torsion-resistance performance, good flexibility, long service life and the like.

Utility model content

The purpose of this utility model is to overcome the deficiencies of the prior art, and to provide a high-flexible cable with resistance to torsion, so as to solve the technical problems of poor torsion resistance, poor flexibility, and short service life of the cable in the prior art. It has the advantages of good torsion performance, good flexibility and long service life.

The utility model is realized through the following technical solutions: The utility model discloses a torsion-resistant high-flexible cable, which comprises a cable core, an elastic wrapping layer, an inner sheath layer, a toughening layer, an anti-torsion layer and an elastic wrapping layer sequentially wrapped around the cable core. layer, buffer layer, outer sheath layer and anti-crack layer; the cable core includes a wire core and a reinforcing core, the number of wire cores is not less than three, and the wire cores are stranded around the reinforcing core as the center, and the reinforcing core consists of It is formed by twisting less than two elastic cores, and an elastic filling layer is arranged between the wire core, the reinforcing core and the elastic wrapping layer; Combustion layer; inner sheath layer and outer sheath layer are made of nitrile rubber; toughening layer is made of TPE material, installation holes are evenly spaced in the middle of the toughening layer, and springs are arranged in the installation holes; torsion resistance The layer is composed of elastic columns arranged at intervals, and the two ends of the elastic columns are respectively fixedly connected with the toughening layer and the buffer layer; buffer holes are evenly arranged in the middle of the buffer layer.

Further, in order to improve the slip resistance and wear resistance of the cable, the outer surface of the outer sheath layer is provided with anti-skid protrusions at intervals, and the top of the anti-skid protrusions penetrates the anti-crack layer.

Further, in order to improve the tightness of the internal structure of the cable, thereby improving the structural strength of the cable, two adjacent wire cores, between the wire cores and the elastic wrapping layer, and between the wire cores and the reinforcing cores are closely fitted.

Further, in order to improve the flexibility and torsion resistance of the cable, the elastic core, the elastic column and the buffer layer are all made of rubber or nylon materials.

Further, in order to improve the flexibility and torsion resistance of the cable, the material of the elastic filling layer is polyethanol fiber or polyurethane foam.

Further, in order to improve the anti-crack performance of the cable and at the same time improve the tensile performance of the cable, the anti-crack layer is woven from aramid fiber, basalt fiber or polyether ether ketone fiber. Aramid fiber, basalt fiber and PEEK fiber all have excellent mechanical and tensile strength.

Further, in order to improve the fire-resistant and flame-retardant properties of the cable, the fire-resistant and flame-retardant layer is made of a fire-resistant mica tape or a glass fiber cloth wrapped around it.

Further, in order to improve the performance of the cable, the shielding layer is braided by steel wire or copper wire.

Further, in order to improve the flexibility and high temperature resistance of the cable, the insulating layer is made of ethylene propylene rubber or silicone rubber. Both ethylene propylene rubber and silicone rubber have excellent flexibility, resilience and high temperature resistance.

Further, in order to improve the flexibility and torsion resistance of the cable, the elastic wrapping layer is wrapped with PTFE tape or nylon tape.

The utility model has the following advantages:

(1) The utility model adopts a plurality of wire cores to be twisted to make a cable core, and a plurality of elastic cores to be twisted to make a reinforcing core. The cable core is wrapped with an elastic wrapping layer, and the insulating layer, inner and outer sheath layer, toughening layer, elastic column and buffer layer are all made of high-elasticity materials, so that the cable has high flexibility;

(2) The utility model is also coated with a toughening layer and a buffer layer outside the cable core. The toughening layer is made of high-elastic TPE material, and a spring is embedded in the toughening layer, and the buffer layer is made of rubber material. Therefore, the flexibility and resilience of the cable are improved, and the cable can be quickly recovered after being twisted by torsional force, so as to prevent the damage to the internal structure of the cable caused by the continuous twisting. At the same time, the utility model has a buffer hole in the middle of the buffer layer. , between the toughening layer and the buffer layer, a torsion-resistant layer composed of elastic columns is arranged, so as to buffer the torsional force to a certain extent after the cable is subjected to torsional force, prevent the cable from being damaged and broken, and improve the torsion resistance of the cable. performance;

(3) The utility model is also covered with a fire-resistant and flame-retardant layer outside the shielding layer, which improves the fire-resistant and flame-retardant performance of the cable;

(4) The utility model is provided with an anti-crack layer outside the outer sheath layer to prevent cracking and breaking of the outer sheath layer when the cable is twisted, and improve the anti-crack performance, tensile resistance and torsion resistance of the cable;

(5) The utility model is provided with anti-skid protrusions outside the outer sheath layer, which improves the anti-skid performance and wear-resistant performance of the cable.

Description of drawings

1 is a cross-sectional view of the utility model;

Figure 2 is a cross-sectional view of the cable core.

Detailed ways

The embodiments of the present utility model are described in detail below. The present embodiment is implemented on the premise of the technical solution of the present utility model, and provides detailed implementation methods and specific operation processes, but the protection scope of the present utility model is not limited to the following described embodiment.

Example 1

Embodiment 1 discloses a torsion-resistant and highly flexible cable, as shown in Figure 1, comprising a cable core 1 and an elastic wrapping layer 2, an inner sheath layer 3, a toughening layer 4, The anti-torsion layer 5, the buffer layer 6, the outer sheath layer 7 and the anti-crack layer 8, the elastic wrapping layer 2 is wrapped with PTFE tape, and the anti-crack layer 8 is woven from aramid fiber; as shown in Figure 2 As shown, the cable core 1 includes a wire core 11 and a reinforcing core 12, the number of the wire cores 11 is six, and the wire cores 11 are twisted with each other around the reinforcing core 12, and the reinforcing core 12 is twisted by twenty one elastic cores 121. When the number of elastic cores 121 is increased, the flexibility of the reinforcing cores 12 can be improved. The elastic cores 121 are made of rubber material. The wire core 11 and the elastic wrapping layer 2 and between the wire core 11 and the reinforcing core 12 are closely attached, and an elastic filling layer 9 is also arranged between the wire core 11 and the reinforcing core 12 and the elastic wrapping layer 2. The material of the filling layer 9 is polyethanol fiber; the wire core 11 includes a conductor 111 and an insulating layer 112, a shielding layer 113 and a fire-resistant and flame-retardant layer 114 which are sequentially wrapped around the conductor 111. The insulating layer 112 is made of ethylene-propylene rubber material. The shielding layer 113 is made of steel wire braided, and the fire-resistant and flame-retardant layer 114 is wrapped with fire-resistant mica tape; the inner sheath layer 3 and the outer sheath layer 7 are both made of nitrile rubber; the toughening layer 4 is made of TPE material As shown in Figure 1, the middle of the toughening layer 4 is evenly spaced with installation holes 41, and springs 42 are arranged in the installation holes 41; They are respectively fixedly connected to the toughening layer 4 and the buffer layer 6, the elastic column 51 is made of rubber material; The outer surface is provided with anti-skid protrusions 71 at intervals, and the top of the anti-skid protrusions 71 protrudes through the anti-crack layer 8 .

The utility model adopts a plurality of wire cores 11 to be twisted to make a cable core 1, and a plurality of elastic cores 121 to be twisted to form a reinforcement core 12. Filling layer 9, wrapping elastic wrapping layer 2 around cable core 1, insulating layer 112, inner sheath layer 3, outer sheath layer 7, toughening layer 4, elastic column 51, buffer layer 6 are all made of high elastic materials The utility model is also coated with a toughening layer 4 and a buffer layer 6 outside the cable core 1, and the toughening layer 4 is made of high-elasticity TPE material, and the toughening layer 4 is made of TPE material. A spring 42 is embedded in the middle, and the buffer layer 6 is made of rubber material, so as to improve the flexibility and resilience of the cable, and it can quickly recover after the cable is twisted by torsion force, so as to prevent damage to the internal structure of the cable caused by continuous torsion At the same time, the utility model is provided with a buffer hole 61 in the middle of the buffer layer 6, and a torsional layer 5 composed of an elastic column 51 is arranged between the toughening layer 4 and the buffer layer 6, so that after the cable is subjected to torsional force, the torsional force is reduced. A certain degree of buffering is performed to prevent the cable from being damaged and broken, and the torsion resistance of the cable is improved; the utility model is also covered with a fire-resistant and flame-retardant layer 114 outside the shielding layer 113, which improves the fire-resistant and flame-retardant performance of the cable; The utility model is provided with an anti-crack layer 8 outside the outer sheath layer 7 to prevent the outer sheath layer 7 from cracking and breaking when the cable is twisted, and improving the anti-crack performance, tensile resistance and torsion resistance of the cable; The new type is provided with anti-skid protrusions 71 outside the outer sheath layer 7, which improves the anti-skid performance and wear-resistant performance of the cable.

Example 2

Embodiment 2 discloses a torsion-resistant and highly flexible cable, comprising a cable core 1 and an elastic wrapping layer 2 sequentially wrapped around the cable core 1, an inner sheath layer 3, a toughening layer 4, a torsion-resistant layer 5, and a buffer layer. Layer 6, outer sheath layer 7 and anti-cracking layer 8, elastic wrapping layer 2 is wrapped with nylon tape, and anti-cracking layer 8 is woven from basalt fiber; cable core 1 includes wire core 11 and reinforcing core 12, The number of wire cores 11 is five, and the wire cores 11 are twisted around the reinforcing core 12 as the center. The reinforcing core 12 is formed by twisting twenty-six elastic cores 121. When the number of elastic cores 121 is increased, the flexibility of the reinforcing core 12 can be improved. The elastic core 121 is made of nylon material, and is located between two adjacent wire cores 11, between the wire cores 11 and the elastic wrapping layer 2, and between the wire cores. 11 and the reinforcing core 12 are closely attached, and an elastic filling layer 9 is also provided between the wire core 11 and the reinforcing core 12 and the elastic wrapping layer 2. The material of the elastic filling layer 9 is polyurethane foam; the wire core 11 includes The conductor 111 and the insulating layer 112, the shielding layer 113 and the fire-retardant and flame-retardant layer 114 which are sequentially wrapped outside the conductor 111, the insulating layer 112 is made of silicone rubber material, the shielding layer 113 is made of copper wire braided, and the fire-resistant and flame-retardant layer 114 The inner sheath layer 3 and the outer sheath layer 7 are made of nitrile rubber; the toughening layer 4 is made of TPE material, and the middle of the toughening layer 4 is evenly spaced with installation holes 41. A spring 42 is arranged in the installation hole 41; the anti-torsion layer 5 is composed of elastic columns 51 arranged at intervals. The buffer layer 6 is made of nylon material, the buffer holes 61 are evenly opened in the middle of the buffer layer 6, the outer surface of the outer sheath layer 7 is provided with anti-skid protrusions 71 at intervals, and the top of the anti-skid protrusions 71 protrudes out of the anti-crack Layer 8.

The utility model adopts a plurality of wire cores 11 to be twisted to make a cable core 1, and a plurality of elastic cores 121 to be twisted to form a reinforcement core 12. Filling layer 9, wrapping elastic wrapping layer 2 around cable core 1, insulating layer 112, inner sheath layer 3, outer sheath layer 7, toughening layer 4, elastic column 51, buffer layer 6 are all made of high elastic materials The utility model is also coated with a toughening layer 4 and a buffer layer 6 outside the cable core 1, and the toughening layer 4 is made of high-elasticity TPE material, and the toughening layer 4 is made of TPE material. A spring 42 is embedded in the middle, and the buffer layer 6 is made of rubber material, so as to improve the flexibility and resilience of the cable, and it can quickly recover after the cable is twisted by torsion force, so as to prevent damage to the internal structure of the cable caused by continuous torsion At the same time, the utility model is provided with a buffer hole 61 in the middle of the buffer layer 6, and a torsional layer 5 composed of an elastic column 51 is arranged between the toughening layer 4 and the buffer layer 6, so that after the cable is subjected to torsional force, the torsional force is reduced. A certain degree of buffering is performed to prevent the cable from being damaged and broken, and the torsion resistance of the cable is improved; the utility model is also covered with a fire-resistant and flame-retardant layer 114 outside the shielding layer 113, which improves the fire-resistant and flame-retardant performance of the cable; The utility model is provided with an anti-crack layer 8 outside the outer sheath layer 7 to prevent the outer sheath layer 7 from cracking and breaking when the cable is twisted, and improving the anti-crack performance, tensile resistance and torsion resistance of the cable; The new type is provided with anti-skid protrusions 71 outside the outer sheath layer 7, which improves the anti-skid performance and wear-resistant performance of the cable.

Claims (10)

1. A torsion-resistant high-flexibility cable is characterized by comprising a cable core, and an elastic belting layer, an inner sheath layer, a toughening layer, an anti-torsion layer, a buffer layer, an outer sheath layer and an anti-cracking layer which are sequentially coated outside the cable core;

the cable core comprises at least three wire cores and a reinforcing core, the wire cores are mutually twisted around the reinforcing core as a center, the reinforcing core is formed by twisting at least two elastic cores, and an elastic filling layer is arranged among the wire cores, the reinforcing core and the elastic belting layer;

the cable core comprises a conductor, and an insulating layer, a shielding layer and a fire-resistant flame-retardant layer which are sequentially coated outside the conductor;

the inner sheath layer and the outer sheath layer are both made of nitrile rubber;

the toughening layer is made of TPE materials, mounting holes are uniformly formed in the middle of the toughening layer at intervals, and springs are arranged in the mounting holes;

the anti-torsion layer is composed of elastic columns arranged at intervals, and two ends of each elastic column are fixedly connected with the toughening layer and the buffer layer respectively;

buffer holes are uniformly formed in the middle of the buffer layer at intervals.

2. The torsion-resistant highly flexible cable according to claim 1, wherein the outer surface of the outer sheath layer is provided with anti-slip protrusions at intervals, and the tops of the anti-slip protrusions penetrate through the anti-crack layer.

3. The torsion-resistant highly flexible cable of claim 1, wherein adjacent two of said wire cores are tightly attached to each other, to said elastic tape layer, and to said reinforcing core.

4. The torsion resistant highly flexible cable of claim 1, wherein the elastic core, the elastic post and the buffer layer are made of rubber or nylon material.

5. The torsion resistant highly flexible cable according to claim 1, wherein the material of the elastic filling layer is a polyvinyl alcohol fiber or a polyurethane foam.

6. The torsion resistant highly flexible cable of claim 1, wherein the crack prevention layer is woven from aramid fibers, basalt fibers, or polyether ether ketone fibers.

7. The torsion-resistant highly flexible cable according to claim 1, wherein the fire-resistant flame-retardant layer is wrapped with fire-resistant mica tape or glass fiber cloth.

8. The torsion-resistant highly flexible cable according to claim 1, wherein the shielding layer is braided using steel wires or copper wires.

9. The torsion-resistant highly flexible cable according to claim 1, wherein the insulating layer is made of an ethylene propylene rubber or a silicone rubber material.

10. The torsion-resistant highly flexible cable according to claim 1, wherein the elastic tape layer is wrapped with a teflon tape or a nylon tape.

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