Bending-resistant multi-core shielding cable
By setting up a center reinforced steel strand and multi-layer shielding structure in a multi-core cable, the problems of insufficient anti-bending performance of the cable, poor core shielding effect, and increased torsional stress by adding multi-strand core accumulation, achieving higher anti-bending, anti-torsional performance and shielding effect.
Patent Information
- Application Number
- CN202420621081.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-03-28
AI Technical Summary
Existing multi-core cables are prone to bending and torsion during long-term use, resulting in reduced bending resistance and damage to the inner cores; at the same time, interference between the inner cores of the cable cannot be effectively shielded, and the accumulation of multi-stranded cores increases local torsion stress.
A resistant multi-core shielded cable is designed. By setting up a center reinforced steel strand, inner ring sleeve, outer ring sleeve, reinforced wire 1, reinforced wire 2, copper-plastic composite winding belt, metal wire mixed shielding film, shielding belt, copper wire winding belt and copper wire shielding layer, the anti-bending and torsional performance of the cable is enhanced, and independent shielding of the inner core and the outer core is achieved.
The anti-bending and torsion resistance of the cable is improved, and the cable core is avoided from being damaged by bending; at the same time, the multi-layer shielding structure effectively shields the interference between the wire cores and external interference, enhances the shielding effect of the cable and reduces local torsion stress.
Smart Images
Figure CN222580809U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field related to power transmission, and particularly relates to a bending-resistant multi-core shielded cable. Background Art
[0002] Cable is a device for transmitting electric energy or signals, usually composed of several or several groups of wires. Multi-core cable refers to a cable with multiple cores, which is mostly used in various electromechanical equipment, especially more sophisticated robots, drive systems, etc. However, this type of cable still has the following disadvantages in actual use:
[0003] 1. Since multi-core cables do not need to be buried underground, they need to move with electromechanical equipment. In the long-term use process, the cables will bend and move continuously, which may cause torsion, reduce the tensile and bending resistance, and even cause damage to the cable core.
[0004] 2. Secondly, since there are multiple cores inside the cable, they cannot affect each other because they have different functions, and multiple cores are more likely to affect each other when they are piled together and twisted. Usually, only a shielding layer is set around all the cores, but the interference between the cores cannot be shielded;
[0005] 3. Finally, conventional multi-core cables are made up of multiple strands of wire cores, and a large number of wire cores are twisted together. When they are wound and then straightened during use, a large amount of torsional stress will be generated, which can easily cause damage to the cable. Utility Model Content
[0006] The utility model aims to provide a bending-resistant multi-core shielded cable, which solves the problems of insufficient bending resistance of the cable, poor shielding effect of the inner core of the cable, and increased local torsional stress due to the stacking of multiple strands of wire cores in a multi-core cable by arranging a central reinforcing steel strand, an inner ring sleeve, an outer ring sleeve, a first reinforcing wire, a second reinforcing wire, a copper-plastic composite wrapping tape, a metal wire mixed shielding film, a shielding tape, a copper wire wrapping tape, and a copper wire shielding layer.
[0007] In order to solve the above technical problems, the utility model is realized by the following technical solutions:
[0008] The utility model is a bending-resistant multi-core shielded cable, comprising a central reinforcing steel strand, an inner ring sleeve and an outer ring sleeve, wherein the central reinforcing steel strand is located on the inner side of the inner ring sleeve, and the inner ring sleeve is located on the inner side of the outer ring sleeve, and arc sleeves distributed in a ring array are fixed on the outer side of the inner ring sleeve, and reinforcing wires are inserted between the connection between each arc sleeve and the inner ring sleeve; and copper-plastic composite wrapping tape is wound around the outer side of all the arc sleeves, and the outer side of the copper-plastic composite wrapping tape is covered with a metal wire mixed shielding film, and an insulating inner sheath is arranged on the outer side of the metal wire mixed shielding film;
[0009] The outer wall of the insulating inner sheath is fitted with the inner wall of the outer ring sleeve, and the interior of the outer ring sleeve is interspersed with reinforcing wires in a circular array. The outer ring sleeve is wrapped with a copper wire wrapping tape, and the copper wire wrapping tape is wrapped with a copper wire shielding layer.
[0010] Furthermore, an inner core wire is embedded in the inner arc surface of each arc sleeve, and the inner core wire is wrapped by a copper-plastic composite wrapping tape.
[0011] Furthermore, a polyethylene filling core material is filled between the outer wall of the central reinforcing steel strand and the inner wall of the inner ring sleeve.
[0012] Furthermore, outer core wires having a number equal to the number of the second reinforcing wires are embedded in an annular array on the outer wall of the outer ring sleeve, and the outer sides of the outer core wires are covered with a shielding tape.
[0013] Furthermore, a reinforcing wire 2 is arranged in the outer ring sleeve between every two adjacent outer core wires.
[0014] Furthermore, the copper wire shielding layer is covered with an insulating layer, and the insulating layer is covered with an outer sheath.
[0015] Furthermore, the central reinforcing steel strand is formed by three strands of stainless steel wires twisted together around a main steel wire.
[0016] The utility model has the following beneficial effects:
[0017] 1. The utility model solves the problem of insufficient bending resistance of the cable by arranging a central reinforcing steel strand, an inner ring sleeve, an outer ring sleeve, a first reinforcing wire and a second reinforcing wire; a central reinforcing steel strand is arranged in the center of the entire cable to enhance the overall structural strength and bending resistance, ensure the stability of the structure, and avoid damage to the cable core due to excessive force during excessive bending; the first reinforcing wire is arranged in the inner ring sleeve, and the second reinforcing wire is arranged in the outer ring sleeve, so that the inner core wire and the outer core wire are respectively structurally reinforced, the bending resistance is increased, and the torsion resistance is increased, and the cable can quickly recover to its original state after torsion.
[0018] 2. The utility model solves the problem of poor shielding effect of the inner core of the cable by arranging a copper-plastic composite wrapping tape, a metal wire mixed shielding film, a shielding tape, a copper wire wrapping tape and a copper wire shielding layer; the copper-plastic composite wrapping tape and the metal wire mixed shielding film are mainly used for wrapping and shielding of the inner core wires. The inner core wires are mostly wire cores of the same nature, and each outer core wire can be a cable core of a different type. Each outer core wire is wrapped with an independent shielding tape and then wrapped with a copper wire wrapping tape. The copper wire wrapping tape also has a certain shielding function. Finally, the copper wire shielding layer is used to wrap all the outer core wires and all the components inside them to achieve shielding and isolation from the external environment. The overall independent shielding function of the cable core is realized, and the shielding between the cable cores is also realized, and the influence of external factors is also shielded to achieve a shielding effect without affecting each other.
[0019] 3. The utility model solves the problem of increasing local torsional stress due to the stacking of multiple cores in a multi-core cable by arranging inner and outer ring sleeves; the multiple inner cores and outer cores are evenly distributed so that they will not be entangled with each other, thereby reducing the local stress during bending and twisting, reducing the torsional force and increasing flexibility. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.
[0021] Figure 1 A three-dimensional diagram of a bending-resistant multi-core shielded cable;
[0022] Figure 2 It is a layer-by-layer cutaway diagram of a bending-resistant multi-core shielded cable;
[0023] Figure 3 The structural diagram of the central reinforcement steel strand;
[0024] Figure 4 It is a three-dimensional diagram of the inner ring sleeve and its accessory structures;
[0025] Figure 5 It is a three-dimensional diagram of the outer ring sleeve and its accessory structures;
[0026] Figure 6 This is the structural composition diagram of the copper wire shielding layer, insulation layer, and outer sheath;
[0027] Figure 7 This is the structural diagram of the outer core wire and shielding tape.
[0028] Reference numerals:
[0029] 1. Center reinforced steel strand; 101. Polyethylene filling core material; 2. Inner ring sleeve; 201. Arc sleeve; 202. Inner core wire; 203. Reinforcement wire one; 204. Copper-plastic composite wrapping tape; 205. Metal wire mixed shielding film; 206. Insulating inner sheath; 3. Outer ring sleeve; 301. Reinforcement wire two; 302. Outer core wire; 303. Shielding tape; 304. Copper wire wrapping tape; 305. Copper wire shielding layer; 306. Insulating layer; 307. Outer sheath. DETAILED DESCRIPTION
[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0031] See also Figure 1-7 As shown, the utility model is a bending-resistant multi-core shielded cable, comprising a central reinforcing steel strand 1, an inner ring sleeve 2 and an outer ring sleeve 3, wherein the central reinforcing steel strand 1 is located on the inner side of the inner ring sleeve 2, and the inner ring sleeve 2 is located on the inner side of the outer ring sleeve 3, and arc sleeves 201 distributed in a ring array are fixed on the outer side of the inner ring sleeve 2, and reinforcing wires 203 are inserted between the connection between each arc sleeve 201 and the inner ring sleeve 2; and a copper-plastic composite wrapping tape 204 is wound around the outer side of all the arc sleeves 201, and a metal wire mixed shielding film 205 is covered on the outer side of the copper-plastic composite wrapping tape 204, and an insulating inner sheath 206 is arranged on the outer side of the metal wire mixed shielding film 205;
[0032] A central reinforcing steel strand 1 is arranged in the center of the entire cable to enhance the overall structural strength and bending resistance and ensure the stability of its structure. A reinforcing wire 203 is arranged in the inner ring sleeve 2 to increase the bending and torsion resistance of the inner ring sleeve 2, thereby further ensuring the normal operation of the inner core wire 202 outside the inner ring sleeve 2 and preventing it from being damaged due to excessive torsion force.
[0033] The outer wall of the insulating inner sheath 206 is in contact with the inner wall of the outer ring sleeve 3. The inner part of the outer ring sleeve 3 is interspersed with reinforcing wires 301 in an annular array. The outer ring sleeve 3 is wrapped with a copper wire wrapping tape 304, and the copper wire wrapping tape 304 is wrapped with a copper wire shielding layer 305.
[0034] A reinforcing wire 301 is arranged inside the outer ring sleeve 3, so as to enhance the anti-bending and anti-torsion performance of the outer ring sleeve 3, thereby increasing the anti-bending performance of the outer core wire 302 outside the outer ring sleeve 3, increasing the overall structural strength, not easy to deform, quickly recovering from torsion, and quickly eliminating torsion stress; the outer side of the outer core wire 302 outside the outer ring sleeve 3 is then wrapped with a copper wire wrapping tape 304 to keep the position of the outer core wire 302 stable and increase the shielding effect, and then a copper wire shielding layer 305 is arranged to further shield interference;
[0035] The inner ring sleeve 2 and the outer ring sleeve 3 are both made of insulating materials commonly used in the cable industry.
[0036] An inner core wire 202 is embedded in the inner arc surface of each arc sleeve 201, and the inner core wire 202 is wrapped by a copper-plastic composite wrapping tape 204;
[0037] After all the inner core wires 202 are embedded in the arc sleeve 201, they are wrapped with a copper-plastic composite wrapping tape 204 to keep their positions stable and not loose, and to improve shielding performance.
[0038] The space between the outer wall of the central reinforcing steel strand 1 and the inner wall of the inner ring sleeve 2 is filled with a polyethylene filling core material 101;
[0039] The polyethylene filling core material 101 is filled to avoid loosening, increase the stability between the central reinforcing steel strand 1 and the inner ring sleeve 2, and avoid loosening. The gap between the outer wall of the inner ring sleeve 2 and the copper-plastic composite wrapping tape 204 can also be filled with the polyethylene filling core material 101; the gap between the outer wall of the outer ring sleeve 3 and the copper wire wrapping tape 304 can also be filled with the polyethylene filling core material 101 to maintain structural stability; select according to actual needs.
[0040] The outer wall of the outer ring sleeve 3 is embedded with outer core wires 302 in a circular array, the number of which is equal to the number of reinforcing wires 301, and the outer side of the outer core wires 302 is covered with a shielding tape 303; each outer core wire 302 is wrapped with an independent shielding tape 303 to increase its anti-interference ability, and is equidistantly embedded in the groove of the outer wall of the outer ring sleeve 3, and then wrapped as a whole with a copper wire wrapping tape 304.
[0041] A second reinforcing wire 301 is disposed in the outer ring sleeve 3 between every two adjacent outer core wires 302; the evenly distributed second reinforcing wires 301 can evenly increase the anti-torsion and anti-bending properties and avoid the occurrence of excessive local stress.
[0042] The copper wire shielding layer 305 is covered with an insulating layer 306, and the insulating layer 306 is covered with an outer sheath 307; the insulating layer 306 and the outer sheath 307 are both conventional cable structures. The insulating layer 306 is provided to increase the insulation effect to prevent electric shock, etc., and the outer sheath 307 is provided at the outermost layer for protection and wear resistance.
[0043] The central reinforcing steel strand 1 is formed by three strands of stainless steel wires twisted together around a main steel wire, thereby enhancing the structural strength.
[0044] The specific working principle of the utility model is as follows: first, the central reinforcing steel strand 1 is placed on the inner side of the inner ring sleeve 2, and then the polyethylene filling core material 101 is filled in the gap between the two to ensure the stability of the structure. Subsequently, the inner core wire 202 is embedded in the arc sleeve 201 outside the inner ring sleeve 2. After all the inner core wires 202 are embedded inside the arc sleeve 201, they are wrapped with a copper-plastic composite wrapping tape 204 to keep their positions stable and not loose, and to increase the shielding performance. Subsequently, a metal wire mixed shielding film 205 is covered on the outer side of the copper-plastic composite wrapping tape 204, and a reinforcing wire 203 is arranged in the inner ring sleeve 2 to increase the bending and torsion resistance of the inner ring sleeve 2, thereby ensuring the normal operation of the inner core wire 202 outside the inner ring sleeve 2. Finally, an insulating inner sheath 206 is arranged on the outer side of the metal wire mixed shielding film 205 to complete the anti-bending shielding treatment of the inner core wire 202.
[0045] Subsequently, the outer wall of the insulating inner sheath 206 is fitted with the inner wall of the outer ring sleeve 3, that is, the outer ring sleeve 3 is sleeved outside the insulating inner sheath 206, and the outer core wires 302 are embedded in a ring array on the outer wall of the outer ring sleeve 3, and each outer core wire 302 is wrapped with an independent shielding tape 303 to increase its anti-interference ability, and is equidistantly embedded in the groove of the outer wall of the outer ring sleeve 3, and then the copper wire wrapping tape 304 is used for the overall wrapping process, and then a copper wire shielding layer 305 is set to further shield interference, and finally, the insulating layer 306 and the outer sheath 307 are covered in turn outside the copper wire shielding layer 305 to form the overall structure of the cable.
[0046] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.
Claims
1. A bending-resistant multi-core shielded cable, comprising a central reinforcing steel strand (1), an inner ring sleeve (2) and an outer ring sleeve (3), characterized in that: The central reinforcing steel strand (1) is located on the inner side of the inner ring sleeve (2), and the inner ring sleeve (2) is located on the inner side of the outer ring sleeve (3). The outer side of the inner ring sleeve (2) is fixed with arc sleeves (201) distributed in a ring array, and a reinforcing wire (203) is inserted between each connection between the arc sleeve (201) and the inner ring sleeve (2); and all the arc sleeves (201) are wrapped with a copper-plastic composite wrapping tape (204) together, and the outer side of the copper-plastic composite wrapping tape (204) is covered with a metal wire mixed shielding film (205), and the outer side of the metal wire mixed shielding film (205) is provided with an insulating inner sheath (206); The outer wall of the insulating inner sheath (206) is in contact with the inner wall of the outer ring sleeve (3); the interior of the outer ring sleeve (3) is interspersed with reinforcing wires (301) in a circular array; the outer surface of the outer ring sleeve (3) is wrapped with a copper wire wrapping tape (304); and the outer surface of the copper wire wrapping tape (304) is wrapped with a copper wire shielding layer (305).
2. The bending-resistant multi-core shielded cable according to claim 1, characterized in that: An inner core wire (202) is embedded in the inner arc surface of each arc sleeve (201), and the inner core wire (202) is wrapped by a copper-plastic composite wrapping tape (204).
3. The bending-resistant multi-core shielded cable according to claim 1, characterized in that: A polyethylene filling core material (101) is filled between the outer wall of the central reinforcing steel strand (1) and the inner wall of the inner ring sleeve (2).
4. The bending-resistant multi-core shielded cable according to claim 1, characterized in that: The outer wall of the outer ring sleeve (3) is embedded with outer core wires (302) in an annular array, the number of which is equal to the number of reinforcing wires 2 (301), and the outer side of the outer core wires (302) is covered with a shielding tape (303).
5. The bending-resistant multi-core shielded cable according to claim 4, characterized in that: A second reinforcing wire (301) is disposed in the outer ring sleeve (3) between every two adjacent outer core wires (302).
6. The bending-resistant multi-core shielded cable according to claim 1, characterized in that: The copper wire shielding layer (305) is covered with an insulating layer (306), and the insulating layer (306) is covered with an outer sheath (307).
7. The bending-resistant multi-core shielded cable according to claim 1, characterized in that: The central reinforcing steel strand (1) is formed by three strands of stainless steel wires twisted together around a main steel wire.