Fixed-distance automatic wire stripping device for high-voltage cable of portable transformer

Abstract

The invention belongs to the technical field of cable stripping, and relates to a portable transformer high-voltage cable fixed-distance automatic stripping device which comprises a motor and a hydraulic cavity which are both fixedly installed on a base, two high-voltage cable rollers are oppositely arranged, and an ultrahigh-voltage cable is inserted between the two high-voltage cable rollers. The lower end of one high-voltage cable roller is fixedly connected with an output shaft, the bottom end of the output shaft is fixedly connected with the output end of the motor, a supporting column is installed on the lower surface of the other high-voltage cable roller through a bearing, a hydraulic rod is integrally formed on the front side of the supporting column, and a hydraulic plate is fixed to the front end of the hydraulic rod. An elastic spring is arranged between the rear side of the hydraulic plate and the rear side of the inner wall of the hydraulic cavity, the hydraulic plate is slidably connected to the inner wall of the hydraulic cavity, and a threaded hole is formed in the front side of the hydraulic cavity. The portable automatic wire stripper is small in size, convenient to carry about, simple in structure, low in manufacturing cost, capable of achieving automatic wire stripping through rotation of the motor and high in wire stripping efficiency.

Description

Technical Field

[0001] This invention belongs to the field of cable stripping technology and relates to a portable automatic stripping device for high-voltage transformer cables. Background Technology

[0002] Ultra-high voltage cable stripping refers to the process of using specialized tools and techniques, and following strict process requirements, to precisely and layer by layer remove the outer sheath, metal shielding layer, insulating shielding layer, and part of the main insulation at the cable ends or joints during the installation or maintenance of ultra-high voltage power cables (usually referring to voltage levels of 110kV, 120kV, 500kV and above) to expose the internal conductors, facilitating the subsequent installation of cable terminations or intermediate joints.

[0003] Currently, wire stripping is mostly done manually using wire strippers or other tools, which is inefficient, especially when the wire length is long. This greatly reduces the efficiency of installation or maintenance, and is time-consuming and labor-intensive. Furthermore, the stripping distance is usually determined by visual inspection or measurement, further reducing efficiency. This phenomenon has become a problem that urgently needs to be solved by those in the field. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a portable automatic stripping device for high-voltage cables of transformers.

[0005] The portable transformer high-voltage cable fixed-distance automatic stripping device of the present invention includes an ultra-high voltage cable and a portable automatic stripper. The portable automatic stripper includes a base, two high-voltage cable rollers, a motor and a hydraulic chamber. The motor and hydraulic chamber are fixedly mounted on the base. Two high-voltage cable rollers are arranged opposite each other for ultra-high-voltage cables to pass through between the two high-voltage cable rollers. One high-voltage cable roller has an output shaft fixedly connected to its lower end, and the bottom end of the output shaft is fixedly connected to the output end of the motor. The lower surface of the other high-voltage cable roller has a support column mounted on a bearing. A hydraulic rod is integrally formed on the front side of the support column. A hydraulic plate is fixed to the front end of the hydraulic rod. A spring is provided between the rear side of the hydraulic plate and the rear side of the inner wall of the hydraulic chamber. The hydraulic plate is slidably connected to the inner wall of the hydraulic chamber. A threaded hole is opened on the front side of the hydraulic chamber, and a screw is connected to the internal thread. The rear end of the screw is in contact with the front surface of the hydraulic plate. Two blades are disposed on the top of the base, and the two blades are arranged opposite each other; The outer surface of the ultra-high voltage cable is an insulating layer. The right end of the ultra-high voltage cable contacts the left side of the blade. The number of rotations of the motor is controlled according to the stripping length.

[0006] The motor is connected to an external control system, which controls the number of rotations of the motor according to the distance to be stripped. That is, when the motor rotates once, the length of the ultra-high voltage cable stripped is L.

[0007] A fixing block is fixedly installed on the top of the base. Both blades are integrally formed with baffles. One blade is connected to the fixing block through a baffle shaft. A connecting plate is integrally formed on the right side of the support column. The other blade is connected to the connecting plate through a baffle shaft.

[0008] The fixed block is slidably connected to a sliding rod in the middle, and two top rods are fixed to the right end of the sliding rod. The two top rods are respectively in contact with the right side of the two baffles.

[0009] The outer side of the output shaft is integrally formed with a toothed disc, and the outer surface of the slide rod is integrally formed with a toothed block, which meshes with the toothed disc. The outer side of the slide bar is integrally formed with a limiting block, and a spring is provided between the left side of the limiting block and the right side of the fixing block.

[0010] A seal is provided at the threaded connection between the screw and the hydraulic chamber. A pressure chamber is fixed above the base. A pressure plate is slidably connected to the inner wall of the pressure chamber. The right side of the pressure plate is fixed to the left end of the slide rod.

[0011] The front side of the hydraulic chamber is connected to the left side of the pressure chamber by a pipe, and a control valve is installed in the pipe. The front side of the hydraulic plate and the left side of the pressure plate are both filled with hydraulic oil.

[0012] The opening and closing of the control valve is controlled by an external control system.

[0013] Compared with the prior art, the beneficial effects of the present invention are: The portable automatic wire stripper used in this invention is small in size, easy to carry, simple in structure, and low in manufacturing cost. It achieves automated wire stripping through the rotation of a motor, with high stripping efficiency. For different types of ultra-high voltage cables with different diameters, the operator can adjust the distance between the two high-voltage cable rollers through the screw, thus adapting to different types of ultra-high voltage cables. It has a wide range of applications. At the same time, it squeezes the outer surface of the cable to ensure the stability of the cable transport, resulting in better performance. The stripping length is freely controllable. The cable transport length can be controlled by simply controlling the number of rotations of the motor, thereby controlling the stripping length with high precision. Furthermore, as the ultra-high voltage cable is transported, its insulation layer is blocked on the left side of the baffle. The blade and the baffle rotate via a shaft to increase the cutting force of the blade on the insulation layer and improve the stripping efficiency. The baffle connected by the shaft rotates through the center of the shaft, causing the blade to rotate at an arc angle. This increases the cutting force on the one hand and avoids cutting into the inner core of the cable on the other, further protecting the ultra-high voltage cable. This not only improves the stripping efficiency but also prevents the blade from continuously rotating at an arc angle, which could lead to insufficient cutting of the insulation layer. It ensures that the position of the blade and the cable cutting point is appropriate, thereby improving the stripping quality. Attached Figure Description

[0014] Figure 1 This is one of the structural schematic diagrams of an embodiment of the present invention. Figure 2 This is a second structural schematic diagram of an embodiment of the present invention. Figure 3 This is an exploded view of an embodiment of the present invention. Figure 4 This is a top view of an embodiment of the present invention. Figure 5 This is a schematic diagram showing the installation position relationship between the baffle and the connecting plate in one embodiment of the present invention.

[0015] In the diagram: 1. Base; 2. High-voltage cable roller; 3. Motor; 4. Hydraulic chamber; 5. Screw; 6. Fixing block; 7. Baffle; 8. Spring; 9. Pressure chamber; 10. Output shaft; 11. Gear disc; 12. Support column; 13. Hydraulic rod; 14. Hydraulic plate; 15. Connecting plate; 16. Slide rod; 17. Top rod; 18. Pressure plate. Detailed Implementation

[0016] Example 1 like Figures 1-5 As shown, the portable transformer high-voltage cable fixed-distance automatic stripping device of the present invention includes an ultra-high voltage cable and a portable automatic stripper. The portable automatic stripper includes a base 1, two high-voltage cable rollers 2, a motor 3, and a hydraulic chamber 4. The motor 3 and hydraulic chamber 4 are both fixedly mounted on the base 1. Two high-voltage cable rollers 2 are arranged opposite each other for the ultra-high voltage cable to pass through between the two high-voltage cable rollers 2. One high-voltage cable roller 2 has an output shaft 10 fixedly connected to its lower end, and the bottom end of the output shaft 10 is fixedly connected to the output end of the motor 3. The lower surface of the other high-voltage cable roller 2 is bearing-mounted with a support column 12. A hydraulic rod 13 is integrally formed on the front side of the support column 12. A hydraulic plate 14 is fixed to the front end of the hydraulic rod 13, and a spring is provided between the rear side of the hydraulic plate 14 and the rear side of the inner wall of the hydraulic chamber 4. The hydraulic plate 14 is slidably connected to the inner wall of the hydraulic chamber 4. A threaded hole is opened on the front side of the hydraulic chamber 4, and a screw 5 is threaded inside. The rear end of the screw 5 is in contact with the front surface of the hydraulic plate 14. Two blades are arranged on the top of the base 1, and the two blades are arranged opposite each other. The outer surface of the ultra-high voltage cable is an insulating layer. The right end of the ultra-high voltage cable contacts the left side of the blade. The number of rotations of the motor 3 is controlled according to the stripping length. When stripping the insulation layer of the ultra-high voltage cable, the operator inserts one end of the cable between two high-voltage cable rollers 2. The operator then rotates the screw 5, causing it to move while rotating through the threaded hole, contacting the front of the hydraulic plate 14. This pushes the hydraulic plate 14 to slide along the inner wall of the hydraulic chamber 4, driving the support column 12 to move via the hydraulic rod 13. This, in turn, moves one of the high-voltage cable rollers 2, bringing the two rollers closer together to compress and fix the ultra-high voltage cable, providing guidance and stability. Then, the drive motor 3 operates, driving the other high-voltage cable roller 2 to rotate via the output shaft 10. This causes the ultra-high voltage cable and the other high-voltage cable roller 2, which applies force to the cable, to rotate. Friction then pulls the ultra-high voltage cable to the right. The cable moves to the blade position, where the insulation layer on its outer surface is cut by the blade, thus stripping the ultra-high voltage cable. This portable automatic cable stripper is small in size, easy to carry, simple in structure, and low in manufacturing cost. Automatic stripping is achieved through the rotation of motor 3, resulting in high stripping efficiency. Furthermore, for different types of ultra-high voltage cables with varying diameters, the operator can adjust the distance between the two high-voltage cable rollers 2 using screw 5, thus adapting to different cable types and having a wide range of applications. Simultaneously, the cable's outer surface is compressed to ensure stable cable transport, resulting in better performance. The stripping length is freely controllable; simply controlling the number of rotations of motor 3 controls the cable transport length, thereby controlling the stripping length with high precision.

[0017] The motor 3 is connected to an external control system, which controls the number of rotations of the motor 3 according to the stripping distance. That is, one rotation of the motor 3 corresponds to a stripping length of L in the ultra-high voltage cable. The operator controls the number of rotations of the motor 3 through the external control system. When the stripping length of the ultra-high voltage cable is L, the motor 3 is controlled to rotate one revolution. When the stripping length is L / 4, the motor 3 rotates 1 / 4. The stripping length control is highly accurate, avoiding over-stripping that may affect subsequent safety, and the operation is convenient.

[0018] A fixing block 6 is fixedly installed above the base 1. Both blades are integrally formed with baffles 7. One blade is axially connected to the fixing block 6 through the baffle 7. A connecting plate 15 is integrally formed on the right side of the support column 12. The other blade is axially connected to the connecting plate 15 through the baffle 7. When adjusting the distance between the two high-voltage cable rollers 2 for ultra-high voltage cables of different diameters, the support column 12 drives the blades to move synchronously through the connecting plate 15 to adapt to different types of cables. This ensures sufficient stripping while avoiding cutting into the cable core, thus protecting the ultra-high voltage cable. At the same time, by integrally forming the baffle 7 on the right side of the blade, after the blade cuts the ultra-high voltage cable, the baffle 7 blocks the insulation layer. As the cable is transported, the stripped insulation layer is blocked on the left side of the baffle 7, facilitating subsequent cleaning of the stripped insulation layer.

[0019] A sliding rod 16 is slidably connected to the middle of the fixed block 6. Two push rods 17 are fixed to the right end of the sliding rod 16, and the two push rods 17 are respectively engaged with the right sides of the two baffles 7. A gear disk 11 is integrally formed on the outer side of the output shaft 10, and a toothed block is integrally formed on the outer surface of the sliding rod 16, which meshes with the gear disk 11. A limiting block is integrally formed on the outer side of the sliding rod 16, and a spring 8 is provided between the left side of the limiting block and the right side of the fixed block 6. As the ultra-high voltage cable is transported, its insulation layer is blocked on the left side of the baffle 7, and the insulation layer accumulates on its left side, so that the blade and the baffle 7 are subjected to a force to the right. At this time, when the output shaft 10 rotates, it drives the gear disk 11 to rotate, and through meshing, it drives the sliding rod 16 to move to the left. The sliding rod 16 slides through the fixed block 6. Simultaneously, the limiting plate compresses the spring 8, causing the slide rod 16 to move to the left. This causes the top rod 17 to contact the baffle 7 and pushes the baffle 7 to rotate via the shaft. This increases the cutting force of the blade on the insulation layer, improving stripping efficiency. The baffle 7, connected via the shaft, rotates through the shaft center, causing the blade to rotate at an arc angle. This increases the cutting force while preventing the blade from cutting into the cable core, further protecting the ultra-high voltage cable. When the toothed disc 11 rotates to disengage from the toothed block of the slide rod 16, the spring 8 generates a reaction force that resets the slide rod 16, stopping the pressure on the baffle 7. This improves stripping efficiency and prevents the blade from continuously rotating at an arc angle, which could lead to insufficient insulation layer cutting. It ensures that the position of the blade and the cable cutting point is appropriate, improving the stripping quality.

[0020] A seal is provided at the threaded connection between the screw 5 and the hydraulic chamber 4. A pressure chamber 9 is fixed above the base 1, and a pressure plate 18 is slidably connected to the inner wall of the pressure chamber 9. The right side of the pressure plate 18 is fixed to the left end of the slide rod 16. A pipe connects the front side of the hydraulic chamber 4 to the left side of the pressure chamber 9, and a control valve is installed in the pipe. The front side of the hydraulic plate 14 and the left side of the pressure plate 18 are filled with hydraulic oil. When the stripping distance of the ultra-high voltage cable is long, the amount of insulation layer accumulated on the left side of the baffle 7 is large. The force between the blade and the insulation layer causes the ultra-high voltage cable to be subjected to a strong force to the left. At this time, the control valve can be opened, and the slide rod 16 moves to the left and right. During movement, the pressure plate 18 slides left and right along the inner wall of the pressure chamber 9, thereby squeezing hydraulic oil into the hydraulic chamber 4 and then extracting it, repeating the cycle. This causes the hydraulic pressure on the front side of the hydraulic plate 14 to fluctuate. When the hydraulic pressure on the front side of the hydraulic plate 14 increases, the clamping force of the two high-voltage cable rollers 2 on the ultra-high voltage cable increases, so as to smoothly transport the cable. In order to avoid the cable being continuously subjected to high-intensity compression and damaging the cable core inside the cable, the clamping force is reduced from large to small. This can ensure the stability of ultra-high voltage cable transportation and prevent damage to the cable, so as to protect the quality of ultra-high voltage cable to the greatest extent and overcome the impact of the insulation layer on the ultra-high voltage cable.

[0021] The opening and closing of the control valve is controlled by an external control system. The external control system controls the number of rotations of motor 3 according to the stripping length. When the stripping length is long, the control valve is driven to open to enhance the stability of cable transmission. When the stripping length is short, the control valve is driven to close. This can reduce structural wear, improve the service life of the structure, and make the ultra-high voltage cable evenly stressed, avoiding continuous high-intensity compression damage to the cable, thus providing better protection.

[0022] The portable automatic wire stripper used in this invention is small in size, easy to carry, simple in structure, and low in manufacturing cost. It achieves automated wire stripping through the rotation of motor 3, with high stripping efficiency. For different types of ultra-high voltage cables with different diameters, the operator can adjust the distance between the two high-voltage cable rollers 2 through screw 5, thus adapting to different types of ultra-high voltage cables. It has a wide range of applications. At the same time, it squeezes the outer surface of the cable to ensure the stability of the cable transport, resulting in better performance. The stripping length is freely controllable. The cable transport length can be controlled by simply controlling the number of rotations of motor 3, thereby controlling the stripping length with high precision. Furthermore, as the ultra-high voltage cable is transported, its insulation layer is blocked on the left side of the baffle 7. The blade and the baffle 7 rotate through the shaft to increase the cutting force of the blade on the insulation layer and improve the stripping efficiency. The baffle 7 connected by the shaft rotates through the center of the shaft, causing the blade to rotate at an arc angle. This increases the cutting force on the one hand and avoids cutting into the inner core of the cable on the other hand, further protecting the ultra-high voltage cable. This not only improves the stripping efficiency but also prevents the blade from continuously rotating at an arc angle, which could lead to insufficient cutting of the insulation layer. It ensures that the position of the blade and the cable cutting point is appropriate, thereby improving the stripping quality.

[0023] The descriptions of the orientation and relative positional relationships of the structures in this invention, such as front, back, left, right, up, and down, do not constitute a limitation of this invention, but are merely for the convenience of description.

Claims

1. A portable automatic wire stripping device for high-voltage transformer cables, comprising an ultra-high-voltage cable and a portable automatic wire stripper, characterized in that: The portable automatic wire stripper includes a base (1), two high-voltage cable rollers (2), a motor (3), and a hydraulic chamber (4). The motor (3) and the hydraulic chamber (4) are fixedly installed on the base (1). Two high-voltage cable rollers (2) are arranged opposite each other for the ultra-high voltage cable to pass through between the two high-voltage cable rollers (2). One of the high-voltage cable rollers (2) has an output shaft (10) fixedly connected to its lower end. The bottom end of the output shaft (10) is fixedly connected to the output end of the motor (3). The other high-voltage cable roller (2) has a support column (12) mounted on its lower surface bearing. The front side of the support column (12) is integrally formed with a hydraulic rod (13). The front end of the hydraulic rod (13) is fixed with a hydraulic plate (14). A spring is provided between the rear side of the hydraulic plate (14) and the rear side of the inner wall of the hydraulic chamber (4). The hydraulic plate (14) is slidably connected to the inner wall of the hydraulic chamber (4). The front side of the hydraulic chamber (4) is provided with a threaded hole, and a screw (5) is connected to the internal thread. The rear end of the screw (5) is in contact with the front surface of the hydraulic plate (14). Two blades are provided on the top of the base (1), and the two blades are arranged opposite each other; The outer surface of the ultra-high voltage cable is an insulating layer. The right end of the ultra-high voltage cable is in contact with the left side of the blade. The number of rotations of the motor (3) is controlled according to the stripping length.

2. The portable automatic stripping device for high-voltage transformer cables according to claim 1, characterized in that: The motor (3) is connected to an external control system, and the external control system is used to control the number of rotations of the motor (3) according to the distance to be stripped, that is, when the motor (3) rotates once, the length of the ultra-high voltage cable stripped is L.

3. The portable automatic stripping device for high-voltage transformer cables according to claim 2, characterized in that: A fixing block (6) is fixedly installed on the top of the base (1). Both blades are integrally formed with baffles (7). One blade is connected to the fixing block (6) through the baffle (7). A connecting plate (15) is integrally formed on the right side of the support column (12). The other blade is connected to the connecting plate (15) through the baffle (7).

4. The portable automatic stripping device for high-voltage transformer cables according to claim 3, characterized in that: The fixed block (6) is slidably connected to a slide rod (16) in the middle. Two top rods (17) are fixed to the right end of the slide rod (16). The two top rods (17) are respectively attached to the right side of the two baffles (7).

5. The portable automatic stripping device for high-voltage cables of transformers according to claim 4, characterized in that: The output shaft (10) has a toothed disc (11) integrally formed on its outer side, and the slide bar (16) has a toothed block integrally formed on its outer surface, and the toothed block meshes with the toothed disc (11). The slide bar (16) has an integrally formed limiting block on its outer side, and a spring (8) is provided between the left side of the limiting block and the right side of the fixing block (6).

6. The portable automatic stripping device for high-voltage transformer cables according to claim 5, characterized in that: A sealing element is provided at the threaded hole connection between the screw (5) and the hydraulic chamber (4). A pressure chamber (9) is fixed above the base (1). A pressure plate (18) is slidably connected to the inner wall of the pressure chamber (9). The right side of the pressure plate (18) is fixed to the left end of the slide rod (16).

7. The portable automatic stripping device for high-voltage transformer cables according to claim 6, characterized in that: The front side of the hydraulic chamber (4) is connected to the left side of the pressure chamber (9) by a pipe, and a control valve is installed in the pipe. The front side of the hydraulic plate (14) and the left side of the pressure plate (18) are filled with hydraulic oil.

8. The portable automatic stripping device for high-voltage transformer cables according to claim 7, characterized in that: The opening and closing of the control valve is controlled by an external control system.

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