Anti-torsion power flexible cable

Abstract

The utility model discloses an anti-torsion power flexible cable, and relates to the technical field of cables. The cable comprises an outer protection cylinder, a protection assembly, an inner shielding sleeve and a power transmission protection strip, the inner wall of the outer protection cylinder is fixedly provided with the protection assembly, the inner wall of the protection assembly is fixedly provided with the inner shielding sleeve, the inner wall of the inner shielding sleeve is fixedly provided with flexible corrugated plates in an annular array mode, and the surfaces, close to each other, of the flexible corrugated plates are jointly fixedly provided with an inner core. Power transmission protection strips are fixed to the inner wall of the inner shielding sleeve in an annular array mode, the power transmission protection strips are fixed between every two adjacent flexible corrugated plates, and flexible embedding plates are fixed to the peripheral side of the outer protection cylinder in an annular array mode. According to the utility model, through the arrangement of the outer protection cylinder, the protection assembly, the inner shielding sleeve and the power transmission protection strip, the problems that the electric power flexible cable needs to be matched with additional equipment to eliminate torsion stress after torsion, and the laying and embedding position is easy to loosen to affect the embedding stability are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cables, in particular to a torsion-resistant soft power cable. Background Art

[0002] Cable is a device for transmitting electric energy or signals, usually composed of several or several groups of wires. When the cable is working, it is used in metallurgy, ships, tunnels, power plants and other fields. The quality requirements of the cable are very high. Because safety is very important in these fields, generally no hidden safety hazards are allowed. Therefore, in these fields, some cables with strong conductivity, cold resistance, aging resistance, corrosion resistance and excellent shielding performance should be used to better ensure and improve safety. In addition, its hardness needs to be low so that it can be laid better. However, it still has the following disadvantages in actual use:

[0003] 1. First of all, when the cable is produced, it is actually wound on the reel from a straight state to form a ring state, at which time the cable generates a rotational mechanical force; and when the power soft cable is laid, one end of the cable wound on the reel is pulled out and pulled by a wire rope or other rope to a suitable outlet position. In this process, the cable changes from a ring state to a straight state. In this state, the cable will release the stored torsional force and generate another rotational mechanical force, namely, the back-torsion force; then in order to ensure stable straight-line laying, it is necessary to eliminate the back-torsion force and the torsional stress so that the cable itself is in a normal state. In order to eliminate the torsional stress, a back-torsion device is usually installed at the traction end of the cable to rotate and back-twist during the cable traction process; however, this method requires additional structural assistance (such as a back-torsion device and an anti-twist device), and the torsional stress of the cable itself may not be completely eliminated. Additional equipment is required to make the cable rotate in the opposite direction of its own torsional direction to eliminate the torsional stress. If the cable is twisted in the subsequent traction process, it will still cause the insulation layer to be torn and damaged, which is inconvenient to use;

[0004] 2. When the power soft cable is working, when the cable encounters the corresponding environment, it needs to be buried for laying operations. During the laying process, the cable surface is smooth. After it is directly buried in the corresponding position, it is easy to loosen during use after laying, affecting the stability of the burial. Utility Model Content

[0005] The utility model aims to provide a torsion-resistant flexible power cable. By arranging an outer protective tube, a protective component, an inner shielding sleeve and a power transmission protection strip, the utility model solves the problem that the flexible power cable needs additional equipment to eliminate torsional stress after torsion occurs, and the buried position of the laying is easy to loosen, affecting the buried stability.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a torsion-resistant soft power cable, comprising an outer protective tube, a protective component, an inner shielding sleeve and a power transmission protection strip. The protective component is fixed on the inner wall of the outer protective tube, the inner shielding sleeve is fixed on the inner wall of the protective component, flexible corrugated plates are fixed in an annular array on the inner wall of the inner shielding sleeve, inner cores are fixed on the sides of the flexible corrugated plates close to each other, power transmission protection strips are fixed in an annular array on the inner wall of the inner shielding sleeve, the power transmission protection strips are fixed between two adjacent flexible corrugated plates, and flexible interlocking plates are fixed in an annular array on the circumference of the outer protective tube. When working, the protective component, the inner shielding sleeve and the power transmission protection strip are connected therein through the outer protective tube, and the flexible interlocking plates are matched to carry out interlocking during laying and burying of the cable, and the inner shielding sleeve and the power transmission protection strip are protected by the protective component, the torsion resistance of the cable is further increased by the flexible corrugated plates in the inner shielding sleeve, and the first conductor and the second conductor are connected therein by the power transmission protection strip.

[0008] Furthermore, a plurality of connecting rings are fixed to a side of the flexible interlocking plate away from the outer protective tube. The plurality of connecting rings are evenly distributed on the outside of the outer protective tube. When the connecting rings are working, they better increase the connection strength of the flexible interlocking plate and increase the interlocking strength of the buried equipment through the connecting rings.

[0009] Furthermore, the protection component includes an external connecting plate, a reinforcing strip and an inner flexible plate. The outer connecting plate is fixed in a ring array on the inner wall of the outer protective tube, a reinforcing strip is fixed in the middle of the side of the outer connecting plate close to the inner shielding sleeve, an inner flexible plate is fixed on the side of the reinforcing strip close to the inner shielding sleeve, and the inner flexible plate is fixed to the circumference of the inner shielding sleeve. When the protection component is working, the external connecting plate cooperates with the reinforcing strip and the inner flexible plate, so that the protection component and the inner shielding sleeve are stably connected together, and the deformation of the cable during twisting is reduced.

[0010] Furthermore, the protection component also includes an interlocking strip, and the adjacent external connection plates, reinforcement strips and internal flexible plates connected together are all fixed with an interlocking strip, and the interlocking strip is fixed on the circumferential side of the inner shielding sleeve. When the protection component is working, the interlocking strip further cooperates to reduce the deformation of the cable during torsion.

[0011] Furthermore, an inner core is fixed to one side of the flexible corrugated plate in an annular array away from the inner shielding sleeve, and two reinforcing steel wire ropes are fixed to the inner core along the internal axis, and one reinforcing steel wire rope is fixed to the inner core outside the two reinforcing steel wire ropes in an annular array. When the inner core is working, the tensile strength is increased by reinforcing steel wire ropes one and two.

[0012] Furthermore, the power transmission protection strips are all fixed on the circumferential side of the inner core, a second conductor is fixed on the side of the power transmission protection strip close to the inner core, and a first conductor is fixed on the side of the power transmission protection strip away from the inner core, and the first conductor cooperates with the second conductor to ensure the function of conductive operation.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model solves the problem that the power flexible cable needs additional equipment to eliminate torsional stress after torsion occurs by arranging a protection component, an inner shielding sleeve and a power transmission protection strip. When the cable is twisted, the torsion is first transmitted to the protection component. The interlocking strip, the outer connecting plate, the reinforcing strip and the inner flexible plate included in the protection component are twisted. The outer connecting plate, the reinforcing strip and the inner flexible plate are arranged in an I-shape, so that the cable can quickly rotate in the reverse direction of the torsion, and when the torsion is transmitted to the inner shielding sleeve, the flexible corrugated plate in the inner shielding sleeve is twisted. When the flexible corrugated plate is twisted under radial force, an anti-twist effect is generated, and under the action of elasticity, the original shape is quickly restored, so that after the cable is twisted, the cable itself has good torsion resistance, the use of other equipment is reduced, and the installation and use are more convenient.

[0015] 2. The utility model solves the problem that the buried position of the power soft cable is easy to loosen during operation, which affects the buried stability by providing an outer protective tube. After the cable is transported to a suitable position for laying, the corresponding outer protective tube is set at a suitable position during the laying and burying operation. When the outer protective tube is buried at a suitable position through the action of the flexible interlocking plate, the external buried material enters between the flexible interlocking plates and is stably interlocked in the external buried position during operation, so that the buried position of the power soft cable is more stable during operation and the buried stability is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the assembly structure of a torsion-resistant power flexible cable;

[0017] Figure 2 It is a three-dimensional diagram of the structure of the outer protective tube;

[0018] Figure 3 To protect the structural perspective diagram of the components;

[0019] Figure 4 It is a three-dimensional diagram of the inner shielding sleeve structure;

[0020] Figure 5 for Figure 4 A magnified view of the structure at A;

[0021] Figure 6 This is a three-dimensional diagram of the transmission protection strip structure.

[0022] Reference numerals:

[0023] 1. Outer protective tube; 101. Flexible interlocking plate; 102. Connecting ring; 2. Protective assembly; 201. Interlocking strip; 202. Outer connecting plate; 203. Reinforcement strip; 204. Inner flexible plate; 3. Inner shielding sleeve; 301. Flexible corrugated plate; 302. Inner core; 303. Reinforced steel wire rope 1; 304. Reinforced steel wire rope 2; 4. Transmission protection strip; 401. Conductor 1; 402. Conductor 2. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-6 As shown, the utility model is a torsion-resistant soft power cable, comprising an outer protective tube 1, a protective component 2, an inner shielding sleeve 3 and a power transmission protection strip 4. The protective component 2 is fixed on the inner wall of the outer protective tube 1. When the outer protective tube 1 is working, the inner shielding sleeve 3 is protected by the protective component 2, so that the inner shielding sleeve 3 better protects the power transmission protection strip 4 therein. The inner shielding sleeve 3 is fixed on the inner wall of the protective component 2. When the inner shielding sleeve 3 is working, the power transmission protection strip 4 is enclosed therein and electromagnetic shielding is performed. Flexible corrugated plates 301 are fixed in an annular array on the inner wall of the inner shielding sleeve 3. When the flexible corrugated plates 301 are working, the power transmission protection strip 4 is fixed in the inner shielding sleeve 3, and when the inner shielding sleeve 3 is working, The radial strength of the cable is increased by the flexible corrugated plate 301, and the radial deformation of the cable when in use is reduced. The inner core 302 is fixed to the sides of the flexible corrugated plates 301 that are close to each other. The inner core 302 increases the strength of the inner shielding sleeve 3 when working. The inner wall of the inner shielding sleeve 3 is fixed with power transmission protection strips 4 in a ring array. The power transmission protection strips 4 are fixed between two adjacent flexible corrugated plates 301. The power transmission protection strips 4 fix the conductor 1 401 and the conductor 2 402 therein. The circumferential side of the outer protective tube 1 is fixed with flexible mosaic plates 101 in a ring array. After the cable is buried, the flexible mosaic plates 101 are fully embedded with the external burying material, so that the outer protective tube 1 is stably buried in the corresponding position.

[0026] Among them Figure 1 , 2 As shown, a plurality of connecting rings 102 are fixed to one side of the flexible interlocking plate 101 away from the outer protective tube 1. The plurality of connecting rings 102 are evenly distributed on the outside of the outer protective tube 1. When the flexible interlocking plate 101 is working, the connecting rings 102 increase the connection strength, making the flexible interlocking plate 101 more stable to use.

[0027] Among them Figure 1-3As shown, the protection component 2 includes an outer connecting plate 202, a reinforcing strip 203 and an inner flexible plate 204. The outer connecting plate 202 is fixed in a ring array on the inner wall of the outer protective tube 1, a reinforcing strip 203 is fixed in the middle of the side of the outer connecting plate 202 close to the inner shielding sleeve 3, an inner flexible plate 204 is fixed on the side of the reinforcing strip 203 close to the inner shielding sleeve 3, and the inner flexible plate 204 is fixed on the peripheral side of the inner shielding sleeve 3. When the protection component 2 is working, it is connected to the outer protective tube 1 through the outer connecting plate 202, reduces the torsional stress of the cable through the reinforcing strip 203, and is connected to the inner shielding sleeve 3 through the inner flexible plate 204.

[0028] Among them Figure 1 , 3 As shown, the protection component 2 also includes a fitting strip 201, and the fitting strips 201 are fixed between the adjacent external connection plates 202, the reinforcement strips 203 and the internal flexible plates 204 connected together. The fitting strips 201 are fixed to the peripheral side of the inner shielding sleeve 3. When the protection component 2 is working, the fitting strips 201 are made of insulating material to ensure that the fitting strips 201 are fitted, thereby better reducing the deformation of the cable after torsion.

[0029] Among them Figure 1 , 4 As shown in Figure 5, the flexible corrugated plate 301 in an annular array has an inner core 302 fixed on one side away from the inner shielding sleeve 3, and the inner core 302 has a reinforcing steel wire rope 2 304 fixed along the internal axis, and the inner core 302 outside the reinforcing steel wire rope 2 304 has a reinforcing steel wire rope 1 303 fixed in an annular array inside the inner core 302. The flexible corrugated plate 301 increases its own strength through the inner core 302, and the inner core 302 cooperates with the reinforcing steel wire rope 1 303 and the reinforcing steel wire rope 2 304 to increase the corresponding strength inside the outer protective tube 1.

[0030] Among them Figure 1 , 6 As shown, the power transmission protection strips 4 are all fixed on the circumferential side of the inner core 302, and the conductor 2 402 is fixed on the side of the power transmission protection strip 4 close to the inner core 302, and the conductor 1 401 is fixed on the side of the power transmission protection strip 4 away from the inner core 302. The power transmission protection strip 4 protects the conductor 1 401 and the conductor 2 402 in the inner shielding sleeve 3, and transmits power or signals through the conductor 1 401 and the conductor 2 402.

[0031] The specific working principle of the utility model is as follows: when working, when laying the cable, after the cable is transported to the corresponding position, after the cable is transported to the appropriate position for laying, when the laying and burying operation is carried out, the corresponding outer protective tube 1 is set at the appropriate position, and when the flexible interlocking plate 101 acts, the outer protective tube 1 is buried at the appropriate position, and the external buried material enters between the flexible interlocking plates 101, and when working, it is stably embedded in the external buried position, and through the cooperation with the connecting ring 102, it will not be loosened. When the cable is pulled out to generate a torsional force, the torsion is first transmitted to the protection component 2, and the protection component 2 includes an interlocking strip 201, the outer connecting plate 202, the reinforcing strip 203 and the inner flexible plate 204 are twisted, and the outer connecting plate 202, the reinforcing strip 203 and the inner flexible plate 204 are arranged in an I-shape, so that the cable can quickly rotate in the reverse direction of the twisting, and when the twisting is transmitted to the inner shielding sleeve 3, the flexible corrugated plate 301 in the inner shielding sleeve 3 is twisted, and the flexible corrugated plate 301 produces an anti-twisting effect when it is twisted by radial force, and quickly restores its original shape under the action of elasticity, and the reinforcing steel wire rope 1 303 and the reinforcing steel wire rope 2 304 arranged in the inner core 302 increase the internal tensile strength of the outer protective tube 1, and protect the conductor 1 401 and the conductor 2 402.

[0032] 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 torsion-resistant flexible power cable, comprising an outer protective tube (1), a protective assembly (2), an inner shielding sleeve (3) and a power transmission protection strip (4), characterized in that: A protection component (2) is fixed on the inner wall of the outer protection tube (1), an inner shielding sleeve (3) is fixed on the inner wall of the protection component (2), flexible corrugated plates (301) are fixed in an annular array on the inner wall of the inner shielding sleeve (3), inner cores (302) are fixed on the mutually adjacent sides of the flexible corrugated plates (301), power transmission protection strips (4) are fixed in an annular array on the inner wall of the inner shielding sleeve (3), the power transmission protection strips (4) are fixed between two adjacent flexible corrugated plates (301), and flexible interlocking plates (101) are fixed in an annular array on the circumference of the outer protection tube (1).

2. A torsion-resistant flexible power cable according to claim 1, characterized in that: A plurality of connection rings (102) are fixed to a surface of the flexible interlocking plate (101) away from the outer protective tube (1), and the plurality of connection rings (102) are evenly distributed on the outside of the outer protective tube (1).

3. The torsion-resistant flexible power cable according to claim 1, characterized in that: The protection component (2) comprises an outer connection plate (202), a reinforcement strip (203) and an inner flexible plate (204); the outer connection plates (202) are fixed in an annular array on the inner wall of the outer protection tube (1); a reinforcement strip (203) is fixed in the middle of a side of the outer connection plate (202) close to the inner shielding sleeve (3); an inner flexible plate (204) is fixed on a side of the reinforcement strip (203) close to the inner shielding sleeve (3); and the inner flexible plate (204) is fixed on the circumference of the inner shielding sleeve (3).

4. A torsion-resistant flexible power cable according to claim 3, characterized in that: The protection component (2) further comprises an embedding strip (201), and the embedding strip (201) is commonly fixed between the adjacent outer connection plates (202), reinforcement strips (203) and inner flexible plates (204) connected together, and the embedding strip (201) is fixed on the peripheral side of the inner shielding sleeve (3).

5. The torsion-resistant flexible power cable according to claim 1, characterized in that: The flexible corrugated plates (301) in an annular array are fixed with an inner core (302) on one side away from the inner shielding sleeve (3); a second reinforcing steel wire rope (304) is fixed through the inner core (302) along the inner axis; and a first reinforcing steel wire rope (303) is fixed in an annular array inside the inner core (302) outside the second reinforcing steel wire rope (304).

6. The torsion-resistant flexible power cable according to claim 5, characterized in that: The power transmission protection strips (4) are all fixed on the circumferential side of the inner core (302); a second conductor (402) is fixed on the side of the power transmission protection strip (4) close to the inner core (302); and a first conductor (401) is fixed on the side of the power transmission protection strip (4) away from the inner core (302).

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