Auxiliary device for replacing insulator string on cable

Abstract

The invention discloses an auxiliary device for replacing an insulator string on a cable, and relates to the technical field of power transmission network maintenance tools. The auxiliary device for replacing an insulator string on a cable comprises a mounting frame, on the surface of which an insulator string body is fixedly mounted, and further comprises: a docking device, wherein the docking device comprises a latch, a support plate, a fixed rod, a fixed pulley, a receiving rod, a clamping plate, a sleeve, a rotating rod, a support plate, a lower clamp and an upper clamp. A clamping groove is provided on the surface of the mounting frame, and the latch is clamped in the inside of the clamping groove. During maintenance, the maintenance personnel of the auxiliary device for replacing an insulator string on a cable only need to carry the latch, and transport the subsequent required rods to the latch through the fixed pulley on the surface of the latch for maintenance work, thereby reducing the work intensity and safety risks during the maintenance process, improving the replacement efficiency of the insulator string body, and providing support for the insulator string body to reduce safety risks.

Description

Technical Field

[0001] The invention relates to the technical field of power transmission network maintenance tools, in particular to an auxiliary device for replacing an insulator string on a cable. Background Art

[0002] In the power system, the cable insulator string is one of the key components. Its function is to support the cable and prevent electrical leakage. When replacing the cable insulator string, especially in high voltage or dangerous environments, specific auxiliary devices are required to ensure safety and efficiency.

[0003] The patent with patent announcement number CN219892803U relates to an auxiliary device for replacing insulators, including: a clamping gripper and a rotating support rod respectively hinged at both ends of a support frame, a coaxial sleeve of a suspension arm is arranged in the rotating support rod, a slider hook is arranged on the suspension arm, and a movable pulley block is hung on the slider hook; the device is convenient to be fixed on the steel beam of the electric tower by arranging a clamping gripper, and the suspension arm is adapted to the structure of the steel frame of the electric tower by cooperating with the fixed disc and the rotating support rod, ensuring that it is in a hoistable state, and the height and direction of the suspension arm can be adjusted, which is flexible and convenient to use; the patent cooperates with the movable pulley block to realize the mechanical lifting of the insulator, avoids manual operation of the rope to replace the insulator, saves manpower, reduces labor intensity and improves work efficiency.

[0004] In the above patent, mechanical lifting of insulators is achieved through a movable pulley block, avoiding manual operation of ropes to replace insulators, saving manpower, reducing labor intensity and improving work efficiency. However, during the installation of the overall equipment, it is cumbersome and inconvenient to install, resulting in complicated preparations before the replacement process. For this reason, an auxiliary device for replacing insulator strings on cables with a better docking device is designed. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an auxiliary device for replacing an insulator string on a cable, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an auxiliary device for replacing an insulator string on a cable, comprising a mounting frame, on the surface of which an insulator string body is fixedly mounted, and also comprising: a docking device, the docking device comprising a latch, a support plate, a fixed rod, a fixed pulley, a receiving rod, a clamping plate, a sleeve, a rotating rod, a support plate, a lower clamp and an upper clamp, a slot is provided on the surface of the mounting frame, the latch is clamped in the interior of the slot, the support plate is fixedly mounted on a side of the latch away from the mounting frame, the fixed rod is fixedly mounted on a side of the latch away from the mounting frame, the fixed pulley is rotatably mounted on the circle of the fixed rod The circumferential surface of the supporting rod is slidably installed on the side of the pin away from the mounting frame, the clamping plate is fixedly installed on the circumferential surface of the supporting rod, the sleeve is fixedly installed on the circumferential surface of the supporting rod, the rotating rod is rotatably installed on the bottom of the sleeve, the supporting plate is fixedly installed on the circumferential surface of the rotating rod, the lower clamp is rotatably installed on the end of the supporting plate away from the rotating rod, and the upper clamp is rotatably installed inside the lower clamp. During maintenance, the maintenance personnel only need to carry the pin and transport the subsequent required rods to it for maintenance work through the fixed pulley on the surface of the pin, thereby reducing the work intensity and safety risks during the maintenance process and improving the replacement efficiency of the insulator string body.

[0007] According to the above technical solution, a sliding groove is provided on the surface of the support plate, and the movement of the receiving rod drives the movement of the clamping plate, and the clamping plate moves into the sliding groove on the surface of the support plate, thereby realizing the clamping and fixing of the receiving rod. The surface of the support plate is set to an arc surface, which can support the receiving rod more stably.

[0008] According to the above technical solution, the surface of the lower clamp slides through the limit rod, a telescopic elastic rod 1 is fixedly installed on the surface of the lower clamp, the free end of the telescopic elastic rod 1 is fixedly connected to the limit rod, and a through hole is opened on the surface of the upper clamp. The upper clamp rotates to contact and squeeze the limit rod to move, and after the limit rod moves, it squeezes the telescopic elastic rod 1 to shrink. After the telescopic elastic rod 1 shrinks, it drives the limit rod to reset and enter the through hole on the surface of the upper clamp, thereby achieving fixation and support of the insulator string body.

[0009] The locking block is fixedly mounted on the side of the L-shaped plate close to the sleeve, which can effectively prevent the rotating rod from rotating during the upward transportation of the supporting plate, causing the supporting plate to rotate and open, thereby affecting the subsequent installation of the supporting plate and improving the replacement efficiency of the insulator string body.

[0010] According to the above technical solution, the free end of the telescopic elastic rod 2 is fixedly connected to the L-shaped plate, the telescopic elastic rod 2 can drive the L-shaped plate to reset, the sliding block is fixedly connected to the L-shaped plate, and the side of the sliding block close to the baffle rod is set as a bevel surface. The sliding block moves downward to contact the baffle rod and moves in the direction away from the baffle rod under the action of the bevel surface.

[0011] According to the above technical solution, a stabilizing device for improving the stability during the replacement of the insulator string body is provided on the surface of the pin, the stabilizing device includes a movable groove and an L-shaped rod, the movable groove is arranged on the surface of the pin, and the L-shaped rod is slidably installed in the movable groove, the stabilizing device also includes a driven roller, a lifting groove, a lifting rod, a centrifugal groove, a rotating block and a pushing rod, the pushing rod rotates to contact and squeeze the L-shaped rod to move downward, and the L-shaped rod moves downward to drive the driven roller to move downward, the driven roller is rotatably installed on the circumferential surface of the L-shaped rod, the lifting groove is arranged on the surface of the L-shaped rod, the lifting rod is slidably installed in the lifting groove, the centrifugal groove is arranged on the surface of the fixed pulley, the rotating block is slidably installed in the centrifugal groove, and the pushing rod is fixedly installed on the circumferential surface of the rotating rod, the rotating block rotates to contact and squeeze the lifting rod to move upward, and the lifting rod moves upward to squeeze the telescopic elastic rod four to contract, thereby realizing the limitation of the rotation speed of the fixed pulley, avoiding rapid falling due to incorrect operation when replacing the insulator string body.

[0012] According to the above technical solution, a telescopic elastic rod three is fixedly installed on the inner wall of the movable groove, and the free end of the telescopic elastic rod three is fixedly connected to the L-shaped rod; a telescopic elastic rod four is fixedly installed on the inner wall of the lifting groove, and the free end of the telescopic elastic rod four is fixedly connected to the lifting rod; a telescopic elastic rod five is fixedly installed on the inner wall of the centrifugal groove, and the free end of the telescopic elastic rod five is fixedly connected to the rotating block. At the same time, when the fixed pulley rotates too fast, the rotating block gradually moves in the direction away from the center of the fixed pulley under the action of centrifugal force. After the rotating block moves to a certain distance, it continues to rotate and disengages from the beveled surface three of the lifting rod and is restricted by it, preventing the fixed pulley from continuing to rotate, effectively avoiding the direct fall of the insulator string body to cause harm to the maintenance personnel, and further reducing the safety risks during the replacement process.

[0013] According to the above technical solution, bevel cut surface 2 is set above the L-shaped rod, and the push rod rotates to squeeze the L-shaped rod downward through bevel cut surface 2. Bevel cut surface 3 is set below the lifting rod, and the rotating block rotates to push the lifting rod upward through bevel cut surface 3.

[0014] The present invention provides an auxiliary device for replacing an insulator string on a cable. It has the following beneficial effects:

[0015] (1) The auxiliary device for replacing insulator strings on the cable, during maintenance, the maintenance personnel only need to carry the pin and use the fixed pulley on the surface of the pin to transport the subsequent required rods to carry out maintenance work, thereby reducing the work intensity and safety risks during the maintenance process and improving the replacement efficiency of the insulator string body. At the same time, the lower clamp and the upper clamp are driven by the rotating rod and the support plate to clamp and fix the insulator string body, which is convenient for the staff to provide additional support and protection when disassembling the insulator string body, avoiding the increase of safety risks during the disassembly of the insulator string body due to incorrect operation or external factors.

[0016] (2) The auxiliary device for replacing the insulator string on the cable, during the docking process, the receiving rod drives the sliding block to move through the sleeve and the stop rod, and the movement of the sliding block drives the L-shaped plate to move and release the limit on the rotating rod through the clamping block. After the limit is released, the support plate can be rotated to support the insulator string body, which can effectively prevent the receiving rod from rotating during the upward transportation process, causing the support plate to rotate and open, thereby affecting the subsequent installation of the receiving rod, thereby improving the replacement efficiency of the insulator string body.

[0017] (3) An auxiliary device for replacing the insulator string on the cable. After the L-shaped plate releases the limit on the rotating rod, the L-shaped rod and the driven roller are squeezed downward by the push rod, and the rope is clamped under the action of the fixed pulley. At the same time, during the replacement of the insulator string body, the fixed pulley rotates to drive the rotating block to rotate. The rotating block rotates through the lifting rod to squeeze the telescopic elastic rod four, thereby limiting the rotation speed of the fixed pulley, avoiding rapid falling due to incorrect operation when replacing the insulator string body, thereby increasing the safety risk during the replacement of the insulator string body. At the same time, when the fixed pulley rotates too fast, the rotating block moves away from the center of the fixed pulley under the action of centrifugal force. After moving to a certain distance, the rotating block continues to rotate and disengages from the oblique cut surface three of the lifting rod and is restricted by it, preventing the fixed pulley from continuing to rotate, effectively avoiding the direct fall of the insulator string body to cause harm to the maintenance personnel, and further reducing the safety risk during the replacement process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the mounting bracket and the latch position structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the position structure of the receiving rod and the supporting plate of the present invention;

[0021] Figure 4 This is a schematic diagram of the explosion structure of the casing and the L-shaped plate of the present invention;

[0022] Figure 5 It is a schematic diagram of the position structure of the lower clamp and the upper clamp of the present invention;

[0023] Figure 6 For the present invention Figure 5 The enlarged structural diagram of part A in the middle;

[0024] Figure 7 It is a schematic diagram of the position structure of the L-shaped rod and the driven roller of the present invention;

[0025] Figure 8 For the present invention Figure 7 The enlarged structural diagram of part B is shown in the figure.

[0026] In the figure: 1, mounting frame; 2, insulator string body; 3, latch; 4, support plate; 5, fixing rod; 6, fixed pulley; 7, receiving rod; 8, clamping plate; 9, sleeve; 10, rotating rod; 11, supporting plate; 12, lower clamp; 13, upper clamp; 14, clamping groove; 15, slide groove; 16, limit rod; 17, telescopic spring rod 1; 18, through hole; 191, stop rod; 192, sliding block; 1 93. Limiting groove; 194. L-shaped plate; 195. Fixed groove; 196. Telescopic spring rod 2; 197. Block; 201. Moving groove; 202. L-shaped rod; 203. Driven roller; 204. Lifting groove; 205. Lifting rod; 206. Centrifugal groove; 207. Rotating block; 208. Push rod; 209. Telescopic spring rod 3; 210. Telescopic spring rod 4; 211. Telescopic spring rod 5. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 8 An embodiment of the present invention is: an auxiliary device for replacing an insulator string on a cable, comprising a mounting frame 1, an insulator string body 2 is fixedly mounted on the surface of the mounting frame 1, and also comprising: a docking device, the docking device comprising a latch 3, a support plate 4, a fixing rod 5, a fixed pulley 6, a receiving rod 7, a clamping plate 8, a sleeve 9, a rotating rod 10, a supporting plate 11, a lower clamp 12 and an upper clamp 13, a card slot 14 is opened on the surface of the mounting frame 1, the latch 3 is clamped in the inside of the card slot 14, the support plate 4 is fixedly mounted on the side of the latch 3 away from the mounting frame 1, the fixing rod 5 is fixedly mounted on the side of the latch 3 away from the mounting frame 1, the fixed pulley 6 is rotatably mounted on the circumferential surface of the fixing rod 5, and the bearing The connecting rod 7 is slidably installed on the side of the pin 3 away from the mounting frame 1, the clamping plate 8 is fixedly installed on the circumferential surface of the receiving rod 7, the sleeve 9 is fixedly installed on the circumferential surface of the receiving rod 7, the rotating rod 10 is rotatably installed at the bottom of the sleeve 9, the supporting plate 11 is fixedly installed on the circumferential surface of the rotating rod 10, the lower clamp 12 is rotatably installed on the end of the supporting plate 11 away from the rotating rod 10, and the upper clamp 13 is rotatably installed inside the lower clamp 12. During maintenance, the maintenance personnel only need to carry the pin 3 and transport the subsequent required rods to the fixed pulley 6 on the surface of the pin 3 for maintenance work, thereby reducing the work intensity and safety risks during the maintenance process and improving the replacement efficiency of the insulator string body 2.

[0029] A slide groove 15 is provided on the surface of the support plate 4. The movement of the receiving rod 7 drives the clamping plate 8 to move. The clamping plate 8 moves into the slide groove 15 on the surface of the support plate 4, thereby realizing the clamping and fixing of the receiving rod 7. The surface of the support plate 4 is set to an arc surface, which can support the receiving rod 7 more stably.

[0030] The surface of the lower clamp 12 slides through the limit rod 16, and a telescopic elastic rod 17 is fixedly installed on the surface of the lower clamp 12. The free end of the telescopic elastic rod 17 is fixedly connected to the limit rod 16. A through hole 18 is opened on the surface of the upper clamp 13. The upper clamp 13 rotates to contact and squeeze the limit rod 16 to move. After the limit rod 16 moves, it squeezes the telescopic elastic rod 17 to shrink. After the telescopic elastic rod 17 shrinks, it drives the limit rod 16 to reset and enter the through hole 18 on the surface of the upper clamp 13, thereby realizing the fixation and support of the insulator string body 2.

[0031] When this embodiment is working: the maintenance personnel inserts the pin 3 into the card slot 14 on the surface of the mounting frame 1, and then transports the receiving rod 7 to the side of the mounting frame 1 through the rope and the fixed pulley 6 on the surface of the pin 3. Then the maintenance personnel places the receiving rod 7 on the surface of the support plate 4. The movement of the receiving rod 7 drives the card plate 8 to move, and the card plate 8 moves into the slide groove 15 on the surface of the support plate 4, thereby realizing the card connection and fixation of the receiving rod 7. After the receiving rod 7 is fixed, the support plate 11 is rotated, and the rotation of the support plate 11 drives the lower clamp 12 to rotate. When the lower clamp 12 rotates to the bottom of the insulator string body 2, the upper clamp 13 is rotated to contact with the lower clamp 12, and the upper clamp 13 rotates to contact and squeeze the limit rod 16. After the limit rod 16 moves, it squeezes the telescopic elastic rod 17 to shrink. After the telescopic elastic rod 17 shrinks, it drives the limit rod 16 to reset and enter the through hole 18 on the surface of the upper clamp 13, thereby fixing and supporting the insulator string body 2, providing additional support and protection for the staff when disassembling the insulator string body 2, avoiding the increase of safety risks in the disassembly process of the insulator string body 2 due to incorrect operation or external factors. At the same time, during maintenance, the maintenance personnel only need to carry the pin 3 and transport the subsequent required rods to it for maintenance work through the fixed pulley 6 on the surface of the pin 3, thereby reducing the work intensity and safety risks during the maintenance process and improving the replacement efficiency of the insulator string body 2.

[0032] See also Figure 1-Figure 8On the basis of the above embodiment, in another embodiment of the present invention, a limiting device for preventing the support plate 11 from shaking during the docking process is provided on the surface of the sleeve 9, and the limiting device includes a stopper 191 and a sliding block 192. The stopper 191 is fixedly mounted on the side of the support plate 4 close to the sleeve 9, and the sliding block 192 is slidably mounted on the side of the sleeve 9 close to the support plate 4. The limiting device also includes a limiting groove 193, an L-shaped plate 194, a fixing groove 195, a telescopic spring rod 196 and a block 197. The movement of the sleeve 9 drives the sliding block 192 to move, and the sliding block 192 moves to contact the stopper 191 Under its action, it moves in the direction away from the blocking rod 191, the limiting groove 193 is opened on the circumferential surface of the rotating rod 10, the L-shaped plate 194 is slidably installed at the bottom of the sleeve 9, the fixing groove 195 is opened on the surface of the sleeve 9, the telescopic elastic rod 196 is fixedly installed at the bottom of the inner wall of the fixing groove 195, and the block 197 is fixedly installed on the side of the L-shaped plate 194 close to the sleeve 9, which can effectively prevent the rotating rod 10 from rotating during the upward transportation of the receiving rod 7, causing the support plate 11 to rotate and open, thereby affecting the subsequent installation of the receiving rod 7 and improving the replacement efficiency of the insulator string body 2.

[0033] The free end of the telescopic elastic rod 196 is fixedly connected to the L-shaped plate 194, and the telescopic elastic rod 196 can drive the L-shaped plate 194 to reset. The sliding block 192 is fixedly connected to the L-shaped plate 194. The side of the sliding block 192 close to the baffle rod 191 is set as a bevel surface. The sliding block 192 moves downward to contact the baffle rod 191 and moves in the direction away from the baffle rod 191 under the action of the bevel surface.

[0034] The surface of the plug 3 is provided with a stabilizing device for improving the stability during the replacement of the insulator string body 2. The stabilizing device includes a moving groove 201 and an L-shaped rod 202. The moving groove 201 is opened on the surface of the plug 3. The L-shaped rod 202 is slidably installed in the moving groove 201. The stabilizing device also includes a driven roller 203, a lifting groove 204, a lifting rod 205, a centrifugal groove 206, a rotating block 207 and a pushing rod 208. The pushing rod 208 rotates to contact and squeeze the L-shaped rod 202 to move downward. The L-shaped rod 202 moves downward to drive the driven roller 203 to move downward. The driven roller 203 rotates and is installed on the L The lifting groove 204 is provided on the surface of the L-shaped rod 202, the lifting rod 205 is slidably installed inside the lifting groove 204, the centrifugal groove 206 is provided on the surface of the fixed pulley 6, the rotating block 207 is slidably installed inside the centrifugal groove 206, and the pushing rod 208 is fixedly installed on the circumferential surface of the rotating rod 10. The rotating block 207 rotates to contact and squeeze the lifting rod 205 to move upward, and the lifting rod 205 moves upward to squeeze the telescopic elastic rod 210 to contract, thereby limiting the rotation speed of the fixed pulley 6, avoiding rapid falling due to incorrect operation when replacing the insulator string body 2.

[0035] A telescopic elastic rod 3 209 is fixedly installed on the inner wall of the movable groove 201, and the free end of the telescopic elastic rod 3 209 is fixedly connected to the L-shaped rod 202. A telescopic elastic rod 4 210 is fixedly installed on the inner wall of the lifting groove 204, and the free end of the telescopic elastic rod 4 210 is fixedly connected to the lifting rod 205. A telescopic elastic rod 5 211 is fixedly installed on the inner wall of the centrifugal groove 206, and the free end of the telescopic elastic rod 5 211 is fixedly connected to the rotating block 207. At the same time, when the fixed pulley 6 rotates too fast, the rotating block 207 gradually moves away from the center of the fixed pulley 6 under the action of centrifugal force. After the rotating block 207 moves to a certain distance, it continues to rotate and disengages from the beveled surface 3 of the lifting rod 205 and is restricted by it, preventing the fixed pulley 6 from continuing to rotate, effectively avoiding the direct fall of the insulator string body 2 to cause harm to the maintenance personnel, and further reducing the safety risks during the replacement process.

[0036] A second bevel is provided above the L-shaped rod 202, and the push rod 208 rotates through the second bevel to squeeze the L-shaped rod 202 downward. A third bevel is provided below the lifting rod 205, and the rotating block 207 rotates through the third bevel to push the lifting rod 205 upward.

[0037] When this embodiment is working: during the installation of the receiving rod 7, the receiving rod 7 drives the sleeve 9 to move when it moves in the direction close to the supporting plate 4, and the movement of the sleeve 9 drives the sliding block 192 to move, and the sliding block 192 moves to contact the blocking rod 191 and moves in the direction away from the blocking rod 191 under its action, and the movement of the sliding block 192 drives the L-shaped plate 194 to move, and the movement of the L-shaped plate 194 drives the clamping block 197 to move, and the clamping block 197 moves out of the limiting groove 193 on the surface of the rotating rod 10 and releases the limit on the rotating rod 10. After the limit is released, the support plate 11 can be rotated to support the insulator string body 2, which can effectively prevent the rotating rod 10 from rotating during the upward transportation of the receiving rod 7. , causing the support plate 11 to rotate and open, thereby affecting the subsequent installation of the receiving rod 7, improving the replacement efficiency of the insulator string body 2, and at the same time, when the L-shaped plate 194 moves in the direction away from the sleeve 9, it drives the telescopic elastic rod 196 to stretch. When the insulator string body 2 is replaced, the rotating rod 10 is driven to rotate by rotating the support plate 11. The rotating rod 10 rotates so that the limiting groove 193 on its surface contacts the block 197 again, and under the action of the telescopic elastic rod 196, the block 197 re-enters the inside of the limiting groove 193 to limit the support plate 11, further improving the replacement efficiency of the insulator string body 2, and maintaining the stability of the receiving rod 7 during the up and down transportation.

[0038] After the L-shaped plate 194 releases the limit on the rotating rod 10, the rotating rod 10 rotates to drive the push rod 208 to rotate, and the push rod 208 rotates to contact and squeeze the L-shaped rod 202 to move downward, and the L-shaped rod 202 moves downward to drive the driven roller 203 to move downward, and the driven roller 203 moves downward to clamp the rope with the fixed pulley 6. At the same time, the driven roller 203 moves downward to drive the lifting rod 205 to move downward, and the lifting rod 205 moves downward into the motion trajectory of the rotating block 207. When the insulator string body 2 is replaced, the insulator string body 2 drives the fixed pulley 6 to rotate during the rope replacement process, and the fixed pulley 6 rotates to drive the rotating block 207 to rotate, and the rotating block 207 rotates to contact and squeeze the lifting rod 2 05 moves upward, the lifting rod 205 moves upward to squeeze the telescopic spring rod four 210 to contract, thereby limiting the rotation speed of the fixed pulley 6, avoiding rapid falling due to incorrect operation when replacing the insulator string body 2, thereby increasing the safety risk in the process of replacing the insulator string body 2. At the same time, when the fixed pulley 6 rotates too fast, the rotating block 207 gradually moves away from the center of the fixed pulley 6 under the action of centrifugal force. After moving to a certain distance, the rotating block 207 continues to rotate and disengages from the oblique cut surface three of the lifting rod 205 and is restricted by it, preventing the fixed pulley 6 from continuing to rotate, effectively avoiding the insulator string body 2 from directly falling and causing injuries to the maintenance personnel, and further reducing the safety risk in the replacement process.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for replacing an insulator string on a cable, comprising a mounting frame (1), an insulator string body (2) being fixedly mounted on a surface of the mounting frame (1), characterized in that: Also included is a docking device; The docking device comprises a latch (3), a support plate (4), a fixing rod (5), a fixed pulley (6), a receiving rod (7), a clamping plate (8), a sleeve (9), a rotating rod (10), a supporting plate (11), a lower clamp (12) and an upper clamp (13); a clamping groove (14) is provided on the surface of the mounting frame (1); the latch (3) is clamped in the inside of the clamping groove (14); the support plate (4) is fixedly mounted on a side of the latch (3) away from the mounting frame (1); the fixing rod (5) is fixedly mounted on a side of the latch (3) away from the mounting frame (1); the fixed pulley (6) is rotated to rotate with the mounting frame (1). The receiving rod (7) is mounted on the circumferential surface of the fixed rod (5), the receiving rod (7) is slidably mounted on the side of the latch (3) away from the mounting frame (1), the clamping plate (8) is fixedly mounted on the circumferential surface of the receiving rod (7), the sleeve (9) is fixedly mounted on the circumferential surface of the receiving rod (7), the rotating rod (10) is rotatably mounted on the bottom of the sleeve (9), the supporting plate (11) is fixedly mounted on the circumferential surface of the rotating rod (10), the lower clamp (12) is rotatably mounted on one end of the supporting plate (11) away from the rotating rod (10), and the upper clamp (13) is rotatably mounted inside the lower clamp (12); The surface of the sleeve (9) is provided with a limiting device for preventing the support plate (11) from shaking during the docking process, the limiting device comprising a stopper rod (191) and a sliding block (192), the stopper rod (191) being fixedly mounted on a side of the support plate (4) close to the sleeve (9), and the sliding block (192) being slidably mounted on a side of the sleeve (9) close to the support plate (4); The surface of the latch (3) is provided with a stabilizing device for improving the stability of the insulator string body (2) during replacement, the stabilizing device comprising a movable groove (201) and an L-shaped rod (202), the movable groove (201) being provided on the surface of the latch (3), and the L-shaped rod (202) being slidably mounted inside the movable groove (201); A sliding groove (15) is provided on the surface of the support plate (4), and the surface of the support plate (4) is configured as a curved surface; The surface of the lower clamp (12) slides through the limit rod (16), a telescopic elastic rod (17) is fixedly mounted on the surface of the lower clamp (12), the free end of the telescopic elastic rod (17) is fixedly connected to the limit rod (16), and a through hole (18) is opened on the surface of the upper clamp (13); The maintenance personnel insert the latch (3) into the slot (14) on the surface of the mounting frame (1), and then transport the receiving rod (7) to the side of the mounting frame (1) through the rope and the fixed pulley (6) on the surface of the latch (3). The receiving rod (7) moves to drive the card plate (8) to move, and the card plate (8) moves into the slide groove (15) on the surface of the support plate (4), thereby achieving the card connection and fixation of the receiving rod (7). After the receiving rod (7) is fixed, the support plate (11) is rotated, and the support plate (11) rotates to drive the lower clamp The clamp (12) is rotated, and when the lower clamp (12) is rotated to the bottom of the insulator string body (2), the upper clamp (13) is rotated to contact with the lower clamp (12), and the upper clamp (13) is rotated to contact and squeeze the limit rod (16) to move. After the limit rod (16) moves, it squeezes the telescopic elastic rod (17) to shrink. After the telescopic elastic rod (17) shrinks, it drives the limit rod (16) to reset and enter the through hole (18) on the surface of the upper clamp (13), thereby fixing and supporting the insulator string body (2).

2. The auxiliary device for replacing an insulator string on a cable according to claim 1, characterized in that: The limiting device further comprises a limiting groove (193), an L-shaped plate (194), a fixing groove (195), a second telescopic elastic rod (196) and a clamping block (197); the limiting groove (193) is formed on the circumferential surface of the rotating rod (10); the L-shaped plate (194) is slidably mounted on the bottom of the sleeve (9); the fixing groove (195) is formed on the surface of the sleeve (9); the second telescopic elastic rod (196) is fixedly mounted on the bottom of the inner wall of the fixing groove (195); and the clamping block (197) is fixedly mounted on a side of the L-shaped plate (194) close to the sleeve (9).

3. The auxiliary device for replacing an insulator string on a cable according to claim 2, characterized in that: The free end of the second telescopic elastic rod (196) is fixedly connected to the L-shaped plate (194), the sliding block (192) is fixedly connected to the L-shaped plate (194), and a side of the sliding block (192) close to the blocking rod (191) is arranged as a beveled surface.

4. The auxiliary device for replacing an insulator string on a cable according to claim 3, characterized in that: The stabilizing device further comprises a driven roller (203), a lifting groove (204), a lifting rod (205), a centrifugal groove (206), a rotating block (207) and a pushing rod (208); the driven roller (203) is rotatably mounted on the circumferential surface of the L-shaped rod (202); the lifting groove (204) is provided on the surface of the L-shaped rod (202); the lifting rod (205) is slidably mounted inside the lifting groove (204); the centrifugal groove (206) is provided on the surface of the fixed pulley (6); the rotating block (207) is slidably mounted inside the centrifugal groove (206); and the pushing rod (208) is fixedly mounted on the circumferential surface of the rotating rod (10).

5. The auxiliary device for replacing an insulator string on a cable according to claim 4, characterized in that: A telescopic elastic rod three (209) is fixedly mounted on the inner wall of the movable groove (201), and the free end of the telescopic elastic rod three (209) is fixedly connected to the L-shaped rod (202); a telescopic elastic rod four (210) is fixedly mounted on the inner wall of the lifting groove (204), and the free end of the telescopic elastic rod four (210) is fixedly connected to the lifting rod (205); a telescopic elastic rod five (211) is fixedly mounted on the inner wall of the centrifugal groove (206), and the free end of the telescopic elastic rod five (211) is fixedly connected to the rotating block (207).

6. The auxiliary device for replacing an insulator string on a cable according to claim 5, characterized in that: The upper portion of the L-shaped rod (202) is provided as a second beveled surface, and the lower portion of the lifting rod (205) is provided as a third beveled surface.

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