Power cable pair twisting device

Abstract

The invention discloses a power cable pair twisting device, and relates to the technical field of stranding machines, and the device can drive a gear B to move, drive a gear C to rotate when the gear B moves, drive a gear A on a force applying plate to rotate through a connecting rod when the gear C rotates, drive a small shaft to rotate when the gear C rotates, and drive an elliptical ring to move up and down when the small shaft rotates. When the elliptical ring moves up and down, the piston rod can be driven to move up and down, and when the piston rod moves in the piston bin, the lubricating oil can be moved from the oil drum to the discharging box through the conveying pipe; when the gear C rotates, the small shaft can be driven to rotate, when the gear continuously moves, due to lubrication, the situation that the gear fails due to the fact that the surface of the gear is fatigued due to long-time friction and abrasion is avoided, and the gear can be effectively protected.

Description

Technical Field

[0001] The present invention relates to the technical field of stranding machines, and specifically to a power cable twisting device. Background Art

[0002] A power cable twisting device is a device specifically used for twisting some wires. Its purpose is to mechanically twist wires that are difficult to twist manually and wind and twist materials such as the conductors, insulation layers, and sheaths of the cables to form the final structure of the power cable.

[0003] The patent with the patent announcement number CN212675985U involves a first column, a second column, and a baffle. Fixed plates are fixedly arranged on the front surfaces of the first column and the second column, support blocks are fixedly arranged at the bottom ends of the first column and the second column, mounting mechanisms are fixedly arranged at the bottom ends of the two support blocks, first card slots are formed on one sides of the two support blocks, and second card slots are formed at the top parts on one side of the first column and the top parts on one side of the second column; the beneficial effect of this patent is that: for a stranding frame device of a power cable production twisting machine in this patent, by arranging first clamping blocks on both sides of the bottom end of the baffle and second clamping blocks on both sides of the top of the baffle, and engaging the two first clamping blocks and the two second clamping blocks with the two first card slots and the two second card slots respectively, it can limit the top parts on both sides and the two sides at the bottom end of the baffle, facilitating the installation and disassembly of the baffle.

[0004] In the above patent, by arranging first clamping blocks on both sides of the bottom end of the baffle and second clamping blocks on both sides of the top of the baffle, and engaging the two first clamping blocks and the two second clamping blocks with the two first card slots and the two second card slots respectively, it can limit the top parts on both sides and the two sides at the bottom end of the baffle, facilitating the installation and disassembly of the baffle. However, there are still some problems. When the wire-releasing gear at the front end of the motor rotates, it will generate a great force on the gear. When the gear has been used for a long time and not lubricated, it is easy for the gear to age and the teeth of the gear to break. When the aged gear continues to be used, it will affect the twisting and even pose a threat to personal safety. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a power cable twisting device, which solves the problems raised in the above background art.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A power cable twisting device includes a frame. A rear cover is fixedly installed at the rear end inside the frame, a mounting motor is fixed on the top of the rear cover, a force-applying plate is fixedly installed on the right side inside the frame, a limiting mechanism is arranged on the left side of the force-applying plate, a lubricating mechanism is arranged on the left side of the force-applying plate, a gear Q is rotatably installed on the right side of the force-applying plate, and a compaction mechanism is arranged on the front side inside the frame; Among them, the lubrication mechanism includes gear A, gear B, connecting rod, gear C, small shaft, elliptical ring, plug rod, feeding pipe, long plate, push rod, discharge box, wiping plate, oil barrel and piston chamber. Gear A is rotatably installed on the right surface of the force-applying plate. One end of the connecting rod is fixedly installed on the surface of gear A. Gear C is fixedly installed at the other end of the connecting rod. Gear B is fixedly installed at the output end of the motor. The small shaft is fixedly installed on the side of gear C away from gear A. The discharge box is fixedly installed at the top right of the force-applying plate. A small hole is opened at the bottom of one end of the discharge box close to the force-applying plate. The oil barrel is fixedly installed on the front of the frame. One end of the feeding pipe is fixedly installed on the top of the oil barrel. The piston chamber is fixedly installed at the end of the discharge box away from the force-applying plate. The top of the piston chamber is fixedly installed with the other end of the feeding pipe. The other end of the piston chamber is slidably installed with one end of the plug rod. The elliptical ring is fixedly installed at the other end of the plug rod. The elliptical ring is slidably installed with the small shaft. One end of the long plate is fixedly installed at the bottom of the elliptical ring. One end of the push rod is rotatably installed at the other end of the long plate. The wiping plate is rotatably installed at the other end of the push rod. When gear C rotates, it will drive the small shaft to rotate. When the small shaft rotates, it will drive the elliptical ring to move up and down. When the elliptical ring moves up and down, it will drive the plug rod to move up and down. When the plug rod moves in the piston chamber.

[0007] According to the above technical solution, gear B meshes with gear C. A hole is opened at the top of the piston chamber. When gear B moves, it will drive gear C to rotate, and the hole above the piston chamber will flow the lubricating oil into the discharge box.

[0008] According to the above technical solution, the end of the feeding pipe away from the piston chamber is at the bottom of the oil barrel. A soft sponge is installed at the bottom of the wiping plate. When the feeding pipe is at the bottom, it can avoid the influence of air and prevent the lubricating oil from being sucked upward.

[0009] According to the above technical solution, the compaction mechanism includes a round rod, an A-elliptical ring, a small straight rod, a gear D, a rack, a reinforcing plate, a triangular plate, an L-shaped ladder plate, a position plate, a clamping plate and a sliding block. The reinforcing plate is fixedly installed on the left side of the long plate. One end of the round rod is fixedly installed on the side of the reinforcing plate close to the frame. The A-elliptical ring is fixedly installed at the other end of the round rod. The small straight rod is slidably installed inside the A-elliptical ring. The gear D is rotatably installed on the front inner wall of the frame. The small straight rod is fixedly installed on the side of the gear D close to the long plate. The rack is slidably installed in the first chute on the inner wall of the frame. An opening is formed in the middle of the rack. The triangular plate is fixedly installed at the end of the rack away from the long plate. The position plate is fixedly installed in the middle of the frame interior. Chutes are formed on both sides of the position plate. The L-shaped ladder plate is slidably installed in the chute of the position plate. The clamping plate is fixedly installed on the top of the L-shaped ladder plate. The sliding block is fixedly installed inside the clamping plate. When the round rod moves, it will drive the A-elliptical ring to move. When the A-elliptical ring moves, it will drive the small straight rod to move. When the small straight rod moves, it will drive the gear D to rotate. When the gear D rotates, it will drive the rack to move.

[0010] According to the above technical solution, the triangular plate contacts the L-shaped ladder plate, the gear D meshes with the rack, and the movement of the L-shaped ladder plate will push the sliding block above towards the middle.

[0011] According to the above technical solution, the width of the A-elliptical ring is the same as the diameter of the gear D. The two sliding blocks do not contact each other. When the wire is between the sliding blocks, it will be secondarily extruded.

[0012] According to the above technical solution, the limiting mechanism includes a large gear, gear E, rod-shaped column, rotating ring, connecting column, I-shaped column, U-shaped plate, pressing block, stop block, L-shaped thin rod, telescopic rod and telescopic insertion plate. The large gear is rotatably installed on the left side of the force-applying plate. Gear E is slidably installed in the chute of the force-applying plate. One end of the connecting column is fixedly installed on the front of gear E. The rod-shaped column is rotatably installed on the circumferential surface of the connecting column. The rotating ring is fixedly installed on the circumferential surface of the connecting column. A second chute is provided on the rotating ring. One end of the second chute close to the connecting column penetrates the rotating ring. The U-shaped plate is fixedly installed at the other end of the connecting column. A third chute and a fifth chute are provided on the inner wall of the U-shaped plate. The I-shaped column is rotatably installed inside the U-shaped plate. Fourth chutes are provided on the circular plates at both ends of the I-shaped column. The middle position of the fourth chute penetrates the circular plate. The pressing block is slidably installed in the fourth chute of the I-shaped column. The stop block is fixedly installed outside the I-shaped column. The L-shaped thin rod is slidably installed in the third chute on the inner wall of the U-shaped plate. The telescopic rod is slidably installed in the fifth chute on the inner wall of the U-shaped plate. One end of the telescopic rod is fixed to one end of the L-shaped thin rod close to the rotating ring. One end of the telescopic insertion plate is slidably installed at the through end of the chute on the inner wall of the U-shaped plate. The other end of the telescopic insertion plate is slidably installed in the second chute of the rotating ring. When the large gear rotates, it will drive gear E to rotate. When gear E rotates, it will drive the connecting column to rotate. When the connecting column rotates, it will drive the rotating ring and the rod-shaped column to rotate.

[0013] According to the above technical solution, a first spring is provided between the stop block and the pressing block. The large gear meshes with gear E. When the pressing block presses the stop block, the whole will be limited.

[0014] According to the above technical solution, the rotating ring is in contact with the rod-shaped column. A second spring is provided inside the telescopic rod, and a third spring is provided inside the telescopic insertion plate. The spring will pull the telescopic rod to prevent it from not being able to reset.

[0015] The present invention provides a power cable twisting device. It has the following beneficial effects: (1) In this invention, when gear B moves, it will drive gear C to rotate. When gear C rotates, it will drive gear A on the force-applying plate to rotate through the connecting rod. When gear C rotates, it will drive the small shaft to rotate. When the gears are constantly moving, due to lubrication, the surface of the gears will not produce fatigue due to long-term friction and wear, resulting in gear failure, and the gears can be effectively protected.

[0016] (2) In this invention, when the adding plate moves, it will drive the round rod to move. When the round rod moves, it will drive the A-elliptical ring to move. When the A-elliptical ring moves, it will drive the small straight rod to move, and the already twisted material will be compacted again, avoiding the problem that the twisted material is not tightly compressed, resulting in a decrease in the load-bearing capacity of the structure and being unable to bear the expected mechanical load, thereby reducing the risk of failure.

[0017] (3) This invention shows that when the U-shaped plate rotates, it drives the I-shaped column to rotate. When the I-shaped column rotates, it drives the pressing block and the stop block to move. When the U-shaped plate rotates, it drives the L-shaped thin rod to move. When the L-shaped thin rod moves, it drives the telescopic rod to move, avoiding the situation where when the coil to be twisted is about to be completely wound up, the last wire will be thrown out, causing damage to the surrounding machines and workers. At the same time, it can also prevent the wire that has been wound up in the front from being loosened. Description of the Drawings

[0018] Figure 1 Schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the specific structure of the present invention; Figure 3 Schematic diagram of the lubrication mechanism structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure of part A in the present invention; Figure 5 Schematic diagram of the compaction mechanism structure of the present invention; Figure 6 Schematic diagram of the limiting mechanism structure of the present invention; Figure 7 Schematic diagram of the bar-shaped column and the U-shaped plate of the present invention.

[0019] In the figure: 1, frame; 2, motor; 301, gear A; 302, gear B; 303, connecting rod; 304, gear C; 305, small shaft; 306, elliptical ring; 307, plug rod; 308, feed pipe; 309, long plate; 310, push rod; 311, discharge box; 312, wiping plate; 313, oil barrel; 314, piston chamber; 401, round rod; 402, A elliptical ring; 403, small straight rod; 404, gear D; 405, rack; 406, adding plate; 407, triangular plate; 408, L-shaped ladder plate; 409, position plate; 410, clamping plate; 411, sliding block; 501, large gear; 502, gear E; 503, bar-shaped column; 504, rotating ring; 505, connecting column; 506, I-shaped column; 507, U-shaped plate; 508, pressing block; 509, stop block; 510, L-shaped thin rod; 511, telescopic rod; 512, telescopic plug board; 6, force-bearing plate; 7, rear cover; 8, gear Q. Detailed Implementation Modes

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1 - 7 Figures 1 - 7 , a pair-twisting device for power cables, comprising a frame 1, a rear cover 7 fixedly installed at the inner rear end of the frame 1, a mounting motor 2 fixedly installed at the top of the rear cover 7, a force-bearing plate 6 fixedly installed on the right side inside the frame 1, a limiting mechanism arranged on the left side of the force-bearing plate 6, a lubricating mechanism arranged on the left side of the force-bearing plate 6, a gear Q8 rotatably installed on the right side of the force-bearing plate 6, and a compaction mechanism arranged on the front side inside the frame 1; Among them, the lubricating mechanism includes a gear A301, a gear B302, a connecting rod 303, a gear C304, a small shaft 305, an elliptical ring 306, a plug rod 307, a feeding pipe 308, a long plate 309, a push rod 310, a discharge box 311, a wiping plate 312, an oil barrel 313 and a piston chamber 314. The gear A301 is rotatably installed on the right side surface of the force-bearing plate 6. One end of the connecting rod 303 is fixedly installed on the surface of the gear A301. The gear C304 is fixedly installed at the other end of the connecting rod 303. The gear B302 is fixedly installed at the output end of the motor 2. The small shaft 305 is fixedly installed on the side of the gear C304 away from the gear A301. The discharge box 311 is fixedly installed at the top right side of the force-bearing plate 6. A small hole is opened at the bottom of the end of the discharge box 311 close to the force-bearing plate 6. The oil barrel 313 is fixedly installed on the front of the frame 1. One end of the feeding pipe 308 is fixedly installed at the top of the oil barrel 313. The piston chamber 314 is fixedly installed at the end of the discharge box 311 away from the force-bearing plate 6. The top of the piston chamber 314 is fixedly installed with the other end of the feeding pipe 308. The other end of the piston chamber 314 is slidably installed with one end of the plug rod 307. The elliptical ring 306 is fixedly installed at the other end of the plug rod 307. The elliptical ring 306 is slidably installed with the small shaft 305. One end of the long plate 309 is fixedly installed at the bottom of the elliptical ring 306. One end of the push rod 310 is rotatably installed at the other end of the long plate 309. The wiping plate 312 is rotatably installed at the other end of the push rod 310. When the gears are continuously moving, due to lubrication, the surface of the gears will not be fatigued due to long-term friction and wear, resulting in gear failure, and the gears can be effectively protected.

[0022] The gear B302 meshes with the gear C304. A hole is opened at the top of the piston chamber 314. When the gear B302 moves, it will drive the gear C304 to rotate, and the lubricating oil will flow into the discharge box 311 through the hole above the piston chamber 314.

[0023] The end of the feeding pipe 308 away from the piston chamber is at the bottom of the oil barrel 313. A soft sponge is installed at the bottom of the wiping plate 312. When the feeding pipe 308 is at the bottom, it can avoid the influence of air and prevent the lubricating oil from being sucked upward.

[0024] The compaction mechanism includes a round rod 401, an A-elliptical ring 402, a small straight rod 403, a gear D404, a rack 405, a reinforcing plate 406, a triangular plate 407, an L-shaped ladder plate 408, a position plate 409, a clamping plate 410 and a sliding block 411. The reinforcing plate 406 is fixedly installed on the left side of the long plate 309. One end of the round rod 401 is fixedly installed on the side of the reinforcing plate 406 close to the frame 1. The A-elliptical ring 402 is fixedly installed at the other end of the round rod 401. The small straight rod 403 is slidably installed inside the A-elliptical ring 402. The gear D404 is rotatably installed on the front surface of the inner wall of the frame 1. The small straight rod 403 is fixedly installed on the side of the gear D404 close to the long plate 309. The rack 405 is slidably installed in the first chute on the inner wall of the frame 1. An opening is provided in the middle of the rack 405. The triangular plate 407 is fixedly installed at the end of the rack 405 away from the long plate 309. The position plate 409 is fixedly installed in the middle of the inside of the frame 1. Chutes are provided on both sides of the position plate 409. The L-shaped ladder plate 408 is slidably installed in the chute of the position plate 409. The clamping plate 410 is fixedly installed at the top of the L-shaped ladder plate 408. The sliding block 411 is fixedly installed inside the clamping plate 410. The already stranded material is compacted again to prevent the stranded material from being incompactly compressed, resulting in a decrease in the load-bearing capacity of the structure and being unable to withstand the expected mechanical load, thereby reducing the risk of failure.

[0025] The triangular plate 407 contacts the L-shaped ladder plate 408, and the gear D404 meshes with the rack 405. The movement of the L-shaped ladder plate 408 will push the upper sliding block 411 towards the middle.

[0026] The width of the A-elliptical ring 402 is the same as the diameter of the gear D404. The two sliding blocks 411 do not contact each other. When the wire is between the sliding blocks 411, it will be secondarily extruded.

[0027] The limiting mechanism includes a large gear 501, a gear E 502, a rod-shaped column 503, a rotating ring 504, a connecting column 505, an I-shaped column 506, a U-shaped plate 507, a pressing block 508, a stop block 509, an L-shaped thin rod 510, a telescopic rod 511 and a telescopic insertion plate 512. The large gear 501 is rotatably installed on the left side of the force-applying plate 6. The gear E 502 is slidably installed in the chute of the force-applying plate 6. One end of the connecting column 505 is fixedly installed on the front surface of the gear E 502. The rod-shaped column 503 is rotatably installed on the circumferential surface of the connecting column 505. The rotating ring 504 is fixedly installed on the circumferential surface of the connecting column 505. A second chute is provided on the rotating ring 504. One end of the second chute close to the connecting column 505 penetrates through the rotating ring 504. The U-shaped plate 507 is fixedly installed at the other end of the connecting column 505. A third chute and a fifth chute are provided on the inner wall of the U-shaped plate 507. The I-shaped column 506 is rotatably installed inside the U-shaped plate 507. Fourth chutes are provided on the circular plates at both ends of the I-shaped column 506. The middle position of the fourth chute penetrates through the circular plate. The pressing block 508 is slidably installed in the fourth chute of the I-shaped column 506. The stop block 509 is fixedly installed on the outside of the I-shaped column 506. The L-shaped thin rod 510 is slidably installed in the third chute on the inner wall of the U-shaped plate 507. The telescopic rod 511 is slidably installed in the fifth chute on the inner wall of the U-shaped plate 507. One end of the telescopic rod 511 is fixed to one end of the L-shaped thin rod 510 close to the rotating ring 504. One end of the telescopic insertion plate 512 is slidably installed at the through end of the chute on the inner wall of the U-shaped plate 507. The other end of the telescopic insertion plate 512 is slidably installed in the second chute of the rotating ring 504, avoiding that when the coil to be stranded is about to be completely wound up, the last wire will be thrown out, causing damage to the surrounding machines and workers. At the same time, it can also prevent the previously wound wire from being loosened.

[0028] A first spring is provided between the stop block 509 and the pressing block 508. The large gear 501 meshes with the gear E 502. When the pressing block 508 presses the stop block 509, the whole will be limited.

[0029] The rotating ring 504 fits with the rod-shaped column 503. A second spring is provided inside the telescopic rod 511. A third spring is provided inside the telescopic insertion plate 512. The spring will pull the telescopic rod 511 to prevent it from not being able to reset.

[0030] During operation: Place the frame 1 accurately, put the coil into the I-shaped column 506 in the limiting mechanism, and start the motor 2 above the rear cover 7. When the motor 2 starts, it will drive the gear B302 to move. When the gear B302 moves, it will drive the gear C304 to rotate. When the gear C304 rotates, it will drive the gear A301 on the force plate 6 to rotate through the connecting rod 303. When the gear C304 rotates, it will drive the small shaft 305 to rotate. When the small shaft 305 rotates, it will drive the elliptical ring 306 to move up and down. When the elliptical ring 306 moves up and down, it will drive the plug rod 307 to move up and down. When the plug rod 307 moves in the piston chamber 314, it will move the lubricating oil from the oil barrel 313 to the discharge box 311 through the feed pipe 308. When the elliptical ring 306 moves, it will drive the long plate 309 to move. When the long plate 309 moves, it will drive the push rod 310 below to move. When the push rod 310 moves, it will drive the wiping plate 312 below to move, and wipe off the excess lubricating oil below.

[0031] When the long plate 309 moves, it will drive the adding plate 406 to move. When the adding plate 406 moves, it will drive the round rod 401 to move. When the round rod 401 moves, it will drive the A-elliptical ring 402 to move. When the A-elliptical ring 402 moves, it will drive the small straight rod 403 to move. When the small straight rod 403 moves, it will drive the gear D404 to rotate. When the gear D404 rotates, it will drive the rack 405 to move. When the rack 405 moves, it will drive the triangular plate 407 to move. When the triangular plate 407 moves, it will squeeze the L-shaped ladder plate 408. When the L-shaped ladder plate 408 moves, it will squeeze the clamping plate 410 above the position plate 409. When the clamping plate 410 moves, it will drive the sliding block 411 to move, and compact the already twisted wires.

[0032] When the gear A301 rotates, the gear Q8 will rotate. When the gear Q8 rotates, it will drive the giant gear 501 to rotate. When the giant gear 501 rotates, it will drive the gear E502 to rotate. When the gear E502 rotates, it will drive the connecting column 505 to rotate. When the connecting column 505 rotates, it will drive the rotating ring 504 and the rod-shaped column 503 to rotate. When the rotating ring 504 moves, it will drive the telescopic plug board 512 to move. When the connecting column 505 rotates, it will drive the U-shaped plate 507 to rotate. When the U-shaped plate 507 rotates, it will drive the I-shaped column 506 to rotate. When the I-shaped column 506 rotates, it will drive the pressing block 508 and the stop block 509 to move. When the U-shaped plate 507 rotates, it will drive the L-shaped thin rod 510 to move. When the L-shaped thin rod 510 moves, it will drive the telescopic rod 511 to move.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made therein without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power cable twisting device, comprising a frame (1), characterized in that: A rear cover (7) is fixedly mounted on the rear end of the frame (1), a motor (2) is fixedly mounted on the top of the rear cover (7), a force plate (6) is fixedly mounted on the right side of the frame (1), a limiting mechanism is arranged on the left side of the force plate (6), a lubrication mechanism is arranged on the left side of the force plate (6), a gear Q (8) is rotatably mounted on the right side of the force plate (6), and a compacting mechanism is arranged on the front side of the frame (1); The lubrication mechanism comprises a gear A (301), a gear B (302), a connecting rod (303), a gear C (304), a small shaft (305), an elliptical ring (306), a plug rod (307), a feed pipe (308), a long plate (309), a push rod (310), a discharge box (311), a wiper plate (312), an oil barrel (313) and a piston chamber (314); the gear A (301) is rotatably mounted on the right side surface of the force plate (6); one end of the connecting rod (303) is fixedly mounted on the surface of the gear A (301); the gear C (304) is fixedly mounted on the other end of the connecting rod (303); the gear B (302) is fixedly mounted on the output end of the motor (2); the small shaft (305) is fixedly mounted on a side of the gear C (304) away from the gear A (301); the discharge box (311) is fixedly mounted on the right top of the force plate (6); A small hole is formed at the bottom of one end of the box (311) close to the force plate (6); the oil barrel (313) is fixedly mounted on the front of the frame (1); one end of the feed pipe (308) is fixedly mounted on the top of the oil barrel (313); the piston bin (314) is fixedly mounted on the end of the discharge box (311) away from the force plate (6); the top of the piston bin (314) is fixedly mounted on the other end of the feed pipe (308); the other end of the piston bin (314) is slidably mounted on one end of the plug rod (307); the elliptical ring (306) is fixedly mounted on the other end of the plug rod (307); the elliptical ring (306) is slidably mounted on the small shaft (305); one end of the long plate (309) is fixedly mounted on the bottom of the elliptical ring (306); one end of the push rod (310) is rotatably mounted on the other end of the long plate (309); and the wiper plate (312) is rotatably mounted on the other end of the push rod (310).

2. A power cable twisting device according to claim 1, characterized in that: The gear B (302) is meshed with the gear C (304), and a hole is formed on the top of the piston chamber (314).

3. A power cable twisting device according to claim 2, characterized in that: One end of the material delivery pipe (308) away from the piston chamber is at the bottom of the oil barrel (313), and a soft sponge is installed at the bottom of the wiper plate (312).

4. A power cable twisting device according to claim 3, characterized in that: The compacting mechanism comprises a round rod (401), an elliptical ring A (402), a small straight rod (403), a gear D (404), a rack (405), an additional plate (406), a triangular plate (407), an L ladder plate (408), a position plate (409), a clamping plate (410) and a sliding block (411), wherein the additional plate (406) is fixedly mounted on the left side of the long plate (309), one end of the round rod (401) is fixedly mounted on a side of the additional plate (406) close to the frame (1), the elliptical ring A (402) is fixedly mounted on the other end of the round rod (401), the small straight rod (403) is slidably mounted inside the elliptical ring A (402), and the gear D (404) is rotatably mounted on the inner wall of the frame (1). The small straight rod (403) is fixedly mounted on a side of the gear D (404) close to the long plate (309), the rack (405) is slidably mounted in a first slide groove on the inner wall of the frame (1), a hollow is provided in the middle of the rack (405), the triangular plate (407) is fixedly mounted on an end of the rack (405) away from the long plate (309), the position plate (409) is fixedly mounted in the middle of the frame (1), slide grooves are provided on both sides of the position plate (409), the L ladder plate (408) is slidably mounted in the slide groove of the position plate (409), the clamping plate (410) is fixedly mounted on the top of the L ladder plate (408), and the sliding block (411) is fixedly mounted inside the clamping plate (410).

5. A power cable twisting device according to claim 4, characterized in that: The triangular plate (407) contacts the L ladder plate (408), and the gear D (404) meshes with the rack (405).

6. A power cable twisting device according to claim 5, characterized in that: The width of the A elliptical ring (402) is the same as the diameter of the gear D (404), and the two sliding blocks (411) are not in contact with each other.

7. A power cable twisting device according to claim 6, characterized in that: The limiting mechanism comprises a giant gear (501), a gear E (502), a rod-shaped column (503), a rotating ring (504), a connecting column (505), an I-shaped column (506), a U-shaped plate (507), a pressure block (508), a stopper (509), an L-shaped thin rod (510), a telescopic rod (511) and a telescopic plug plate (512); the giant gear (501) is rotatably mounted on the left side of the force plate (6), and the gear E (502) is slidably mounted on the force plate (6). The connecting column (505) is fixedly mounted on the front face of the gear E (502) at one end, the rod-shaped column (503) is rotatably mounted on the circumferential surface of the connecting column (505), the rotating ring (504) is fixedly mounted on the circumferential surface of the connecting column (505), a No. 2 sliding groove is provided on the rotating ring (504), and one end of the No. 2 sliding groove close to the connecting column (505) passes through the rotating ring (504), and the U-shaped plate (507) is fixedly mounted on the connecting column (505). ), the inner wall of the U-shaped plate (507) is provided with a third slide groove and a fifth slide groove, the I-shaped column (506) is rotatably mounted inside the U-shaped plate (507), the circular plates at both ends of the I-shaped column (506) are provided with a fourth slide groove, the middle position of the fourth slide groove passes through the circular plate, the pressing block (508) is slidably mounted in the fourth slide groove of the I-shaped column (506), the stopper (509) is fixedly mounted on the outside of the I-shaped column (506), and the L thin rod (510) is slidably mounted in the fourth slide groove of the I-shaped column (506). The telescopic rod (511) is slidably mounted in the No. 3 slide groove on the inner wall of the U-shaped plate (507); the telescopic rod (511) is slidably mounted in the No. 5 slide groove on the inner wall of the U-shaped plate (507); one end of the telescopic rod (511) is fixed to one end of the L thin rod (510) close to the rotating ring (504); one end of the telescopic plug plate (512) is slidably mounted on the through end of the slide groove on the inner wall of the U-shaped plate (507); and the other end of the telescopic plug plate (512) is slidably mounted in the No. 2 slide groove of the rotating ring (504).

8. A power cable twisting device according to claim 7, characterized in that: A spring No. 1 is provided between the stopper (509) and the pressure block (508), and the giant gear (501) is meshed with gear E (502).

9. A power cable twisting device according to claim 8, characterized in that: The rotating ring (504) is fitted with the rod-shaped column (503), a No. 2 spring is arranged inside the telescopic rod (511), and a No. 3 spring is arranged inside the telescopic plug plate (512).

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