A mine-used wear-resistant cross-linked polyethylene insulated cable

Abstract

The application relates to the cable technical field and discloses a mine wear-resistant crosslinked polyethylene insulated cable, which comprises anti-abrasion ropes, anti-pressure rings and anti-abrasion pad mechanisms, a plurality of anti-abrasion ropes are spirally wound outside an insulation layer, the anti-abrasion ropes can be in contact with the ground, the anti-pressure rings are provided in plurality, the plurality of anti-pressure rings are equidistantly sleeved on the insulation layer, the anti-abrasion ropes are detachably connected with the anti-pressure rings, the anti-abrasion pad mechanisms are detachably connected with the cable, the anti-abrasion pad mechanisms can be detachably connected with a plurality of cables, the anti-abrasion pad mechanisms are used for replacing the cable to rub against the ground, the anti-abrasion pad mechanisms comprise towing plates, cable butt joint assemblies and positioning leg assemblies, the rotating direction of the anti-abrasion ropes when wound outside the insulation layer is opposite to the twisting direction of the wires, and the above technical scheme is used for solving the problem that in the prior art, only part of the mine cable is in contact with the ground and is greatly damaged by friction, and the friction position is prone to faults.

Description

Technical Field

[0001] This invention relates to cross-linked polyethylene insulated power cables and cable accessories, and more specifically to the field of cable technology, specifically to a wear-resistant cross-linked polyethylene insulated cable for mining applications. Background Technology

[0002] Large equipment such as tunneling machines, conveyors, drilling machines, and ventilation fans are used in the mining of coal and other minerals. These machines require a lot of electricity, which is supplied by cables. However, the environment in a mine is very different from the outside world. When the equipment moves in the mine, it drags the cables along. When ore falls, it can squeeze or bump the cables. The environment is also humid, which requires the cables to have high stability. Cable failure or breakage may cause the equipment to stop operating suddenly or cause accidents such as fires.

[0003] Existing mining cables often have a dense fiber layer on the surface to enhance wear resistance and maintain flexibility. However, during use, when equipment moves or vibrates, the cable is often rubbed against the ground on the same side. This results in one side of the cable experiencing deeper friction and is more prone to failure, while other areas are less damaged. Because it is difficult to properly repair the worn areas, a section of cable has to be discarded, which poses a risk of accidents and results in significant waste. Summary of the Invention

[0004] This invention proposes a wear-resistant cross-linked polyethylene insulated cable for mining, which solves the problem that in the prior art, mining cables only have a portion of their contact with the ground and suffer significant frictional damage, making the friction-affected areas prone to failure.

[0005] The technical solution of the present invention is as follows:

[0006] A mining-grade wear-resistant cross-linked polyethylene insulated cable includes conductors, fillers, and an insulation layer. Multiple conductors are arranged in a spiral twist. The insulation layer is sleeved over the conductors. The cable also includes anti-wear cables, anti-pressure rings, and an anti-wear pad mechanism. Multiple anti-wear cables are spirally wound around the insulation layer and are capable of contacting the ground. Multiple anti-pressure rings are equally spaced and sleeved on the insulation layer. The anti-wear cables are detachably connected to the anti-pressure rings. The anti-wear pad mechanism is detachably connected to the cable and can be detachably connected to multiple cables. The anti-wear pad mechanism is used to replace the cables in friction with the ground. The rotation direction of the anti-wear cables when wound around the insulation layer is opposite to the twisting direction of the conductors.

[0007] The anti-pressure ring is provided with a locking groove and a locking ring. There are multiple locking grooves arranged in a circular pattern on the anti-pressure ring. Each locking groove has an anti-wear cable passing through it. The locking ring is detachably mounted on the anti-pressure ring and contacts the anti-wear cable. The locking ring is sleeved on the anti-wear cable passing through the multiple locking grooves.

[0008] The anti-wear pad mechanism includes a drag plate, cable docking assemblies, and positioning foot assemblies. The drag plate is detachably connected to multiple cables. The edge of the drag plate in contact with the ground is arc-shaped. Multiple cable docking assemblies are provided, and the multiple cable docking assemblies are equally spaced on the drag plate. The cable docking assemblies are used to fix the cables on the drag plate. Multiple positioning foot assemblies are provided, and the positioning foot assemblies are located on the drag plate and in contact with the ground. The positioning foot assemblies are used to support and fix the drag plate on the ground.

[0009] The cable connection assembly includes a U-shaped clamp and a connection hole. The U-shaped clamp is U-shaped and is detachably connected to the anti-pressure ring. A connection pin is provided on both sides of the U-shaped clamp. The connection hole is opened on the drag plate and is detachably connected to the connection pin. When the U-shaped clamp is fitted on the anti-pressure ring, the connection pin is inserted into the connection hole, and the anti-pressure ring contacts the drag plate.

[0010] The positioning support assembly includes retractable slots, fan-shaped supports, and pin components. Multiple retractable slots are provided, and the multiple retractable slots are respectively opened on both sides of the towing plate. Multiple fan-shaped supports are provided, and each retractable slot is rotatably connected to one of the fan-shaped supports. The fan-shaped supports have multiple through holes. Multiple pin components are provided, and each retractable slot has one pin component on its side. The pin components are detachably connected to the through holes on the fan-shaped supports.

[0011] One end of the fan-shaped support leg near the edge of the drag plate is rotatably connected to the drag plate, and the end of the fan-shaped support leg near the edge of the drag plate is set as an arc, while the end away from the edge of the drag plate is set with a sharp corner. Multiple fan-shaped support legs on both sides of the drag plate are arranged opposite each other. When the fan-shaped support leg rotates to the point where the sharp corner contacts the ground, the drag plate is supported on the ground by the sharp corner. When the cable is dragged, the sharp corner can be inserted into the ground.

[0012] The working principle and beneficial effects of this invention are as follows:

[0013] 1. In this invention, by setting an anti-pressure ring and an anti-wear cable, the anti-pressure ring protects the cable from lateral compression, while fixing and locking the anti-wear cable. Compared with related technologies that only use steel cables to wrap around the cable for anti-wear, when the cable is worn and breaks, the entire steel cable falls off, causing a significant decline in anti-wear performance. In this application, the anti-pressure ring and locking ring fix the anti-wear cable, which prevents deviation and avoids the entire cable from falling off after breakage.

[0014] 2. In this invention, by setting the anti-abrasion cable to be twisted in the opposite direction to the conductor, the stress on the insulation layer can be made more uniform, and the twisted anti-abrasion cable can increase the protective area of ​​the insulation layer.

[0015] 3. In this invention, by setting up an anti-wear pad mechanism, the cable is protected when it is concentrated on one side. Multiple cables can be bundled together to avoid them getting tangled and rubbing against each other. Compared with only protecting the cable itself, this avoids the mutual wear caused by the cables getting tangled and the axial tension generated when dragged, further reducing the probability of cable damage. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the overall structure from another perspective in this invention;

[0019] Figure 3 This is a partial internal cross-sectional view of the insulating layer and the pressure-resistant ring in this invention.

[0020] Figure 4 This is a partial structural diagram of the U-shaped clamp and cable working together in this invention;

[0021] Figure 5 This is a partial structural diagram of the cooperation between the receiving and releasing groove and the fan-shaped support leg in this invention;

[0022] Figure 6 This is a partial structural diagram of the fan-shaped support leg in this invention.

[0023] In the diagram: 1. Wire; 2. Filler; 3. Insulation layer; 4. Anti-abrasion cable; 5. Anti-pressure ring; 6. Clamping groove; 7. Locking ring; 8. Trailing plate; 9. U-shaped clamp; 10. Connecting pin; 11. Connecting hole; 12. Retraction groove; 13. Fan-shaped support leg; 14. Pin component; 15. Sharp corner. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0025] like Figures 1-6 As shown, the cable in this embodiment belongs to cross-linked polyethylene insulated power cables and cable accessories. A mining-grade wear-resistant cross-linked polyethylene insulated cable is proposed, including conductors 1, filler 2, and insulation layer 3. Multiple conductors 1 are provided, arranged in a spiral twist. The insulation layer 3 is sleeved on the outer layer of the multiple conductors 1. It also includes anti-wear cables 4, anti-pressure rings 5, and an anti-wear pad mechanism. Multiple anti-wear cables 4 are provided, spirally wound around the outside of the insulation layer 3, and the anti-wear cables 4 can contact the ground. Multiple anti-pressure rings 5 ​​are provided, equally spaced, sleeved on the insulation layer 3. The anti-wear cables 4 and anti-pressure rings 5 ​​are detachably connected. The anti-wear pad mechanism is detachably connected to the cable, and the anti-wear pad mechanism can... It can be detachably connected to multiple cables. The anti-abrasion pad mechanism is used to replace the cable in friction with the ground. When the anti-abrasion cable 4 is wrapped around the outside of the insulation layer 3, the rotation direction is opposite to the torsion direction of the conductor 1. In this application, the anti-abrasion cable 4 is wrapped around the outside of the insulation layer 3. When the cable is dragged, the anti-abrasion cable 4 contacts the ground and rubs. The anti-pressure ring 5 is sleeved on the cable. On the one hand, it is used to prevent the cable from being compressed and provide lateral rigid support. On the other hand, it is used to position the anti-abrasion cable 4 and prevent the anti-abrasion cable 4 from deviating. At the same time, the anti-abrasion pad mechanism can protect the cable and avoid excessive friction. It can also fix multiple cables to prevent them from getting tangled together and being damaged by large tensile forces when dragged.

[0026] like Figures 1-4 As shown, the anti-pressure ring 5 is provided with locking grooves 6 and locking rings 7. Multiple locking grooves 6 are arranged in a circular pattern around the anti-pressure ring 5. An anti-wear cable 4 passes through each locking groove 6. The locking ring 7 is detachably mounted on the anti-pressure ring 5 and contacts the anti-wear cable 4. The locking ring 7 is fitted onto the anti-wear cable 4 passing through the multiple locking grooves 6. The locking grooves 6 can position the anti-wear cable 4, maintaining a certain distance between the multiple anti-wear cables 4. Simultaneously, the locking ring... 7. The anti-abrasion cable 4 passing through the clamping groove 6 is tightened and fixed. After long-term use, the anti-abrasion cable 4 is subjected to a lot of friction and is bound to break. When the anti-abrasion cable 4 breaks, the two ends of the break are clamped by the adjacent locking ring 7 and the clamping groove 6, which can prevent the entire anti-abrasion cable 4 from loosening and reducing the cable's anti-abrasion performance. Only a section of the cable is broken, which does not affect the use of the cable and can greatly extend the service life of the cable. At the same time, the anti-pressure ring 5 is also in contact with the ground, which can reduce the damage to the anti-abrasion cable 4.

[0027] like Figures 1-2 As shown, the anti-wear pad mechanism includes a drag plate 8, cable docking assemblies, and positioning foot assemblies. The drag plate 8 is detachably connected to multiple cables. The edge of the drag plate 8 in contact with the ground is arc-shaped. Multiple cable docking assemblies are provided, and they are evenly spaced on the drag plate 8. The cable docking assemblies are used to fix the cables to the drag plate 8. Multiple positioning foot assemblies are provided, and they are set on the drag plate 8 and in contact with the ground. The positioning foot assemblies are used to support and fix the drag plate 8 on the ground. The cable docking assembly includes a U-shaped clamp 9 and docking holes 11. The U-shaped clamp 9 is U-shaped and detachably connected to the anti-pressure ring 5. Both sides of the U-shaped clamp 9 are provided with docking pins 10. The docking holes 11 are opened on the drag plate 8 and are detachably connected to the docking pins 10. When the U-shaped clamp 9 is fitted onto the anti-pressure ring 5... When the cable is moved, the connecting pin 10 is inserted into the connecting hole 11, and the anti-pressure ring 5 contacts the drag plate 8. When the cable moves with the equipment and one side of the cable rubs against the ground, the cable can be fixed on the drag plate 8 by using the U-shaped clamp 9. When the cable is dragged, the drag plate 8 slides on the ground instead of the cable being rubbed. At the same time, since the drag plate 8 is plate-shaped, it can also prevent the cable from twisting. In this embodiment, there are three cable docking components. When there are three cables running in parallel, the three cables or two cables can be fixed on the drag plate 8 at the same time by the U-shaped clamp 9. After the cables are fixed, they can avoid tangling with each other. The drag plate 8 can also act as a cable bundle. The U-shaped clamp 9 is sleeved on the anti-pressure ring 5 and its two sides do not contact the insulation layer 3. This can prevent the edge of the U-shaped clamp 9 from contacting the insulation layer 3 when the cable is bent, which would cause damage to the insulation layer 3. It can also prevent the cable from sliding axially in the U-shaped clamp 9.

[0028] like Figures 5-6As shown, the positioning support leg assembly includes retractable slots 12, fan-shaped legs 13, and pin components 14. Multiple retractable slots 12 are provided, each located on one side of the drag plate 8. Multiple fan-shaped legs 13 are provided, with one fan-shaped leg 13 rotatably connected to each retractable slot 12. Multiple through holes are provided on each fan-shaped leg 13. Multiple pin components 14 are provided, with one pin component 14 located on the side of each retractable slot 12. The pin components 14 are detachably connected to the through holes on the fan-shaped legs 13. One end of the fan-shaped support leg 13 near the edge of the drag plate 8 is rotatably connected to the drag plate 8. The end of the fan-shaped support leg 13 near the edge of the drag plate 8 is rounded, while the end away from the edge of the drag plate 8 has a sharp corner 15. Multiple fan-shaped support legs 13 on both sides of the drag plate 8 are arranged opposite each other. When the fan-shaped support leg 13 rotates to the point where the sharp corner 15 contacts the ground, the drag plate 8 is supported on the ground by the sharp corner 15. When the cable is dragged, the sharp corner 15 can insert into the ground. When the cable is on one side, the arc-shaped end of the fan-shaped support 13 is aligned with the edge of the drag plate 8. At this time, as the cable drags the drag plate 8, the arc-shaped edge of the drag plate 8 and the fan-shaped support 13 contacts the ground, facilitating the drag plate 8's sliding on the ground. When the fan-shaped support 13 is rotated so that the pointed corner 15 contacts the ground, it is fixed by inserting the pin component 14 into the through hole. At this time, the pointed corner 15 is supported on the ground. Since the ground in the mine is mostly soil or ore, the pointed corner 15 will penetrate into the ground as the cable is dragged. With multiple fan-shaped supports... The pointed corners 15 on foot 13 penetrate into the ground, making it difficult for the drag plate 8 to be dragged on the ground. The position of the cable on the ground can be easily fixed by rotating the fan-shaped support foot 13. When the position of the cable needs to be relatively fixed or the cable does not need to be dragged back and forth, the position of the cable can be fixed by the fan-shaped support foot 13. At the same time, not fixing it rigidly can also avoid the equipment dragging the cable for too long and causing damage to the cable. When the pulling force on the cable is too large, the fan-shaped support foot 13 can separate from the ground and the cable continues to move.

[0029] In this embodiment, when the cable is in use, the anti-pressure ring 5 is directly supported by the ground. When a heavy object is pressed down, the anti-pressure ring 5 can support the object and prevent the cable from being directly squeezed. When the cable is dragged and rubs against the ground, the anti-pressure ring 5 contacts the ground, and the anti-wear cable 4, located between the anti-pressure rings 5, contacts the ground. The anti-wear cable 4 replaces the insulation layer 3 and rubs against the ground. The anti-wear cable 4 is fastened by the locking ring 7, so that if the anti-wear cable 4 breaks when there is a lot of friction with the ground, the two adjacent locking rings 7 can prevent the anti-wear cable 4 from loosening completely. When one side of the cable repeatedly rubs against the ground, it can be prevented by a U-shaped... The clamp secures the cable to the drag plate 8. The mating pin 10 is inserted into the mating hole 11 to fix the cable. At this time, dragging the cable causes the drag plate 8 to drag on the ground, replacing the friction of the cable. The rounded sides of the drag plate 8 can also avoid resistance during dragging. Multiple cables can be fixed on the drag plate 8 at the same time to prevent tangling. Rotating the fan-shaped support leg 13 makes the pointed corner 15 support the ground. When fixed by the pin component 14, the pointed corner 15 inserts into the ground. At this time, dragging the cable causes the pointed corner 15 to insert into the ground along with the drag plate 8, reducing the range of cable dragging.

[0030] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cross-linked polyethylene insulated cable for mining applications, comprising conductors (1), filler (2), and insulation layer (3), wherein multiple conductors (1) are arranged in a spiral twist, and the insulation layer (3) is sleeved on the outer layer of the multiple conductors (1), characterized in that, Also includes: Multiple anti-wear cables (4) are provided, and the multiple anti-wear cables (4) are wound around the outside of the insulation layer (3) in a spiral rotation, and the anti-wear cables (4) can contact the ground; Multiple anti-pressure rings (5) are provided, and the multiple anti-pressure rings (5) are equally spaced and sleeved on the insulating layer (3). The anti-wear cable (4) is detachably connected to the anti-pressure rings (5). A wear-resistant pad mechanism is detachably connected to a cable. The wear-resistant pad mechanism can be detachably connected to multiple cables and is used to replace the cables in friction with the ground. The direction of rotation of the anti-wear cable (4) when it is wrapped around the outside of the insulation layer (3) is opposite to the direction of twist of the conductor (1); The wear-resistant pad mechanism includes: The towing plate (8) is detachably connected to multiple cables, and the edge of the side of the towing plate (8) in contact with the ground is set to be arc-shaped; Multiple cable docking assemblies are provided, and the multiple cable docking assemblies are equally spaced on the drag plate (8). The cable docking assemblies are used to fix the cable on the drag plate (8). Multiple positioning support components are provided. The positioning support components are disposed on the towing plate (8). The positioning support components are in contact with the ground and are used to support and fix the towing plate (8) on the ground. The positioning support assembly includes: Multiple take-up and release slots (12) are provided, and the multiple take-up and release slots (12) are respectively opened on both sides of the drag plate (8); Multiple fan-shaped support legs (13) are provided, and each of the receiving and dispensing slots (12) is rotatably connected to a fan-shaped support leg (13). Multiple through holes are provided on the fan-shaped support leg (13). Multiple pin components (14) are provided, and each of the receiving and releasing slots (12) has a pin component (14) on its side. The pin component (14) is detachably connected to the through hole on the fan-shaped support (13).

2. The cross-linked polyethylene insulated cable for mining applications according to claim 1, characterized in that, The anti-pressure ring (5) is provided with: Multiple locking grooves (6) are provided, and the multiple locking grooves (6) are arranged in a circle around the anti-pressure ring (5). Each locking groove (6) has a wear-resistant cable (4) passing through it. A locking ring (7) is detachably mounted on the anti-pressure ring (5). The locking ring (7) is in contact with the anti-wear cable (4). The locking ring (7) is sleeved on the anti-wear cable (4) which passes through multiple locking grooves (6).

3. The cross-linked polyethylene insulated cable for mining applications according to claim 2, characterized in that, The cable connection assembly includes: The U-shaped clip (9) is configured in a U-shape. The U-shaped clip (9) is detachably connected to the anti-pressure ring (5). Both sides of the U-shaped clip (9) are provided with mating pins (10). A docking hole (11) is provided on the drag plate (8), and the docking hole (11) is detachably connected to the docking pin (10); When the U-shaped clip (9) is fitted onto the anti-pressure ring (5), the docking pin (10) is inserted into the docking hole (11), and the anti-pressure ring (5) comes into contact with the drag plate (8).

4. A cross-linked polyethylene insulated cable for mining applications according to claim 3, characterized in that, The end of the fan-shaped support (13) near the edge of the drag plate (8) is rotatably connected to the drag plate (8), and the end of the fan-shaped support (13) near the edge of the drag plate (8) is set as an arc, and the end away from the edge of the drag plate (8) is set with a sharp corner (15).

5. A cross-linked polyethylene insulated cable for mining applications according to claim 4, characterized in that, The multiple fan-shaped legs (13) on both sides of the drag plate (8) are arranged opposite to each other. When the fan-shaped legs (13) rotate to the point (15) contacting the ground, the drag plate (8) is supported on the ground by the point (15). When the cable is dragged, the point (15) can be inserted into the ground.

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