Maintenance device for power supply line

Abstract

The present invention discloses a maintenance device for power supply lines, which relates to the field of line maintenance, and includes a combined screw, a movable threaded sleeve, and a mounting plate. The movable threaded sleeve is threadedly sleeved on the outside of the combined screw, and the mounting plate is welded to the upper end of the movable threaded sleeve. The number of the combined screws is two. The maintenance device for power supply lines described in the present invention relaxes the line between the two shrink sleeves to prevent the tightening of the line from affecting the use of maintenance docking, so that the shrink sleeve firmly clamps and fixes the line to prevent the line from loosening during maintenance, and prevents the inconsistent angles of the line ends from affecting the maintenance docking, so that the device is installed on a pole for support and use, so that the second ring is placed vertically to support the device and make it suspend. The middle of the clamping of the lines at both ends is reinforced to increase the strength of the line after maintenance, and the installation vertical plate can be quickly connected to be suspended during the next maintenance.

Description

Technical Field

[0001] The invention relates to the field of line maintenance, and in particular to a maintenance device for a power supply line. Background Art

[0002] The maintenance device for power supply lines is a device used to support the power supply lines overhead when the power supply lines are repaired and connected. The power supply lines are generally laid at high altitudes. When the lines are short-circuited or repaired, the lines need to be supported overhead before repair. Therefore, the maintenance device for power supply lines is widely used in power supply line maintenance occasions.

[0003] The Chinese patent with application number "CN202410471306.9" discloses "a power grid line maintenance tool, including a mounting piece, a semi-arc rod is fixed on one side of the mounting piece, a mounting screw is provided inside the mounting piece, and a mounting slider is provided on the outer wall thread of the mounting screw." Although it can play the role of "facilitating installation and connection with other equipment, better circular cutting of cables, enhancing the supporting strength between the mounting piece and the adjustment box, enhancing the performance of the overall cable maintenance operation, and quickly removing the mounting piece and the fixing piece from the outside of the pole", the maintenance device is generally used to clamp and fix the line end position, and then perform maintenance operations. After the line is clamped, the fixed position of the line is also fixed, so the line will be tightened on the device. During subsequent line maintenance and docking, over-tightened lines will affect the use of maintenance docking, and the tightened lines will produce rebound force. Therefore, after the lines are clamped, the rebound force can easily cause the lines to loosen, making it impossible to repair and use the lines more safely and stably. At the same time, the lines are pulled out at different angles when fixed, and the device can only be clamped and fixed at a single angle, which also brings inconvenience to the overhead maintenance of lines at different angles. When the device requires overhead support, the device can usually only perform a single type of fixed support. The occasions for line maintenance are different, and a single overhead support method is not convenient for use in different occasions. Finally, after the line is repaired, the position where the line is repaired is more fragile, which will also lead to the problem of breakage again. In addition, the operation of connecting the device to the line is cumbersome, and it is not convenient for the subsequent device to maintain and repair the line again. Summary of the invention

[0004] The main purpose of the present invention is to provide a maintenance device for a power supply line, which can effectively solve the technical problems raised by the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] The cam is an assembly made of two members, each of which is connected to a different cam body and has a plurality of camshafts, each of which is connected at least one of the plurality of camshafts being connected at least one of the plurality of camshafts being connected at least one of the plurality of camshafts being connected at least one of the plurality of camshafts being connected at least one of the plurality of camshafts being connected at least one of the plurality of camshafts being connected at least one of the plurality of camshafts being connected at least one of the plurality of

[0007] As a further solution of the present invention, the movable threaded sleeve moves around the outer side of the merging screw, the mounting plates on both sides are symmetrically arranged and installed, the two connecting rods are bent and movable through the universal joint, and the shaft of the worm tooth passes through the gear mounting plate and is fixedly connected to the worm operating block.

[0008] As a further solution of the present invention, a screw operating block is welded to the end of the merging screw opposite to the connecting rod, the threads of the two merging screws are arranged oppositely, and the two merging screws are symmetrically arranged and installed with the universal joint as the center.

[0009] As a further solution of the present invention, two screws are installed on the internal threads of the connecting clamp block, and a mounting hole is opened at the bottom of the mounting plate, and the screws pass through the installation at the bottom of the mounting plate.

[0010] As a further solution of the present invention, a first mounting rod is fixedly installed on one side of the mounting plate, a positioning ring is fixedly installed on the end of the first mounting rod away from the mounting plate, a second mounting rod is fixedly installed on the other side of the mounting plate, and a conical ring is fixedly installed on the end of the second mounting rod away from the mounting plate.

[0011] As a further scheme of the present invention, the clamping structure includes an internal threaded sleeve, a telescopic sleeve, a shrinkage sleeve, a worm gear, a reinforcement ring sleeve and a rope threading hole. The internal threaded sleeve is movably mounted on the inner side of the positioning ring, the telescopic sleeve is threadedly mounted on one end of the internal threaded sleeve, the shrinkage sleeve is integrally formed at the end of the telescopic sleeve opposite to the internal threaded sleeve, the worm gear is fixedly mounted on the other end of the internal threaded sleeve, the reinforcement ring sleeve is fixedly mounted on the end of the worm gear opposite to the internal threaded sleeve, and a plurality of rope threading holes are opened on the ring wall of the reinforcement ring sleeve.

[0012] As a further solution of the present invention, the telescopic sleeve passes through the interior of the mounting plate, a plurality of first mounting rods and a second mounting rod are located on the outside of the mounting plate, the outer side of the shrinkage sleeve and the inner wall of the conical ring are both conically arranged, the shrinkage sleeve is fitted and connected to the inner wall of the conical ring, the worm gear teeth are meshed and connected to the worm gear teeth, and a reinforcement rope is passed through the interior of the reinforcement ring sleeve through the rope threading hole.

[0013] As a further solution of the present invention, the quick-release jacket rotates around the connecting rod when released, and the two quick-release jackets are fixedly connected by a connecting plate.

[0014] As a further solution of the present invention, the support structure includes an overhead support rod, a limiting shaft, a first ring, a second ring, a first clamp ring and a second clamp ring. The overhead support rod is fixedly installed at the lower end of the connecting plate, the limiting shaft is fixedly installed at the lower end of the overhead support rod, the first ring is movably installed on the outside of the limiting shaft, the second ring is arranged at the end of the first ring opposite to the limiting shaft, two first clamp rings are movably installed on both sides of the outside of the first ring, and the second clamp ring is movably installed on the end of the first clamp ring opposite to the first ring.

[0015] As a further solution of the present invention, the first ring is rotatable around the limiting rotation axis, the first ring and the second ring are arranged in a circular ring shape, the ends of the first ring and the second ring are fixedly connected by screws, and the two first clamping rings and the second clamping rings are located at the end positions of the first ring.

[0016] Compared with the prior art, the present invention has the following beneficial effects: after the line to be repaired and docked is clamped, the two shrink sleeves can be brought together by rotating the combined screw, thereby loosening the line between the two shrink sleeves, preventing the tightening of the line from affecting the use of the repair docking, and making the maintenance of the power supply line more convenient;

[0017] The worm gear and worm wheel gear are used for driving. The worm gear and worm wheel gear are the driving structure of the worm gear. The worm gear drives the worm wheel gear, but the worm wheel gear cannot drive the worm gear to rotate. Therefore, the telescopic sleeve cannot move in the opposite direction, so that the shrink sleeve can firmly clamp the line to prevent the line from loosening during maintenance, and the line can be repaired and used more safely and stably.

[0018] When the two ends of the line are pulled out in different directions, first bend the merging screws and adjust them to the same direction as the two ends of the line, and then merge the shrink sleeves and line ends at different angles to prevent the inconsistent angles of the line ends from affecting the maintenance docking, which is more convenient for the maintenance docking of lines at different angles;

[0019] When the device is mounted on a pole, the first and second rings are placed on the outside of the pole and then tightened to fix the device, so that the device is mounted on the pole for support and use, so that the line can be mounted on the pole for maintenance, which is convenient for overhead maintenance of the line next to the pole.

[0020] When the device is used in conjunction with other overhead lines, the first ring is placed on the outside of the lower or upper line, and the second clamping ring and the first clamping ring are placed on the lower line for positioning, so that the second ring is placed vertically to support the device to be overhead, so as to achieve overhead maintenance of the line, which is convenient for overhead maintenance of the line when there is no pole support;

[0021] After the line connection and repair, the installation vertical plate is separated from the connecting clamp, and the part that clamps the line remains on the line. The reinforcement rope is then passed through the reinforcement rings on both sides to fix it, and the middle of the line clamps at both ends is reinforced to increase the strength of the line after repair and prevent the repair position from loosening. The installation vertical plate can also be quickly connected and suspended during the next repair, which is convenient for subsequent maintenance and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of a maintenance device for a power supply line of the present invention;

[0023] Figure 2 It is an enlarged view of a combined screw rod in a maintenance device for a power supply line of the present invention;

[0024] Figure 3 An enlarged view of a mounting plate in a maintenance device for a power supply line of the present invention;

[0025] Figure 4 This is a disassembled diagram of a vertical plate installed in a maintenance device for a power supply line of the present invention;

[0026] Figure 5 This is a disassembled diagram of a telescopic sleeve in a maintenance device for a power supply line of the present invention;

[0027] Figure 6 It is an enlarged view of an internal thread sleeve in a maintenance device for a power supply line of the present invention;

[0028] Figure 7 This is a disassembled diagram of a quick-release jacket in a maintenance device for a power supply line of the present invention;

[0029] Figure 8 This is a disassembled diagram of a second ring in a maintenance device for a power supply line of the present invention;

[0030] Fig. 9 This is a structural diagram of a first ring support on a line in a maintenance device for a power supply line of the present invention;

[0031] Fig.10This is a structural diagram of a first sleeve ring and a second sleeve ring in a maintenance device for a power line of the present invention being installed on a utility pole.

[0032] In the figure: 1. Combined screw; 2. Screw operating block; 3. Connecting rod; 4. Universal shaft; 5. Moving threaded sleeve; 6. Mounting plate; 7. Gear mounting plate; 8. Worm gear; 9. Worm operating block; 10. Connecting clamp block; 11. Mounting vertical plate; 12. First mounting rod; 13. Positioning ring; 14. Second mounting rod; 15. Conical ring; 16. Clamping structure; 17. Internal threaded sleeve; 18. Telescopic sleeve; 19. Shrink sleeve; 20. Worm gear; 21. Reinforcement ring sleeve; 22. Rope threading hole; 23. Quick release clamp sleeve; 24. Connecting plate; 25. Support structure; 26. Overhead support rod; 27. Limiting shaft; 28. First ring; 29. ​​Second ring; 30. First clamp ring; 31. Second clamp ring; 32. Reinforcement rope. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] like Figure 1-Figure 10 As shown, a maintenance device for a power supply line comprises a merging screw 1, a movable threaded sleeve 5 and a mounting plate 6, wherein the movable threaded sleeve 5 is threadedly sleeved on the outer side of the merging screw 1, and the mounting plate 6 is welded to the upper end of the movable threaded sleeve 5. There are two merging screws 1, and a connecting rod 3 is welded to the adjacent ends of the two merging screws 1, and a universal shaft 4 is fixedly installed to the adjacent ends of the two connecting rods 3. A gear mounting plate 7 is welded to one side of the top of the mounting plate 6, and a worm gear 8 is rotatably installed on the inner side of the gear mounting plate 7. A worm operating block 9 is rotatably installed on the front and rear ends of the gear mounting plate 7. A connecting clamp 10 is integrally formed on the other side of the top of the mounting plate 6, and a mounting vertical plate 11 is inserted into the inner side of the connecting clamp 10, and a clamping structure 16 is movably installed on the inner side of the mounting vertical plate 11. The outer sides of the two connecting rods 3 are fixedly sleeved with a quick-release clamp 23, and a connecting plate 24 is fixedly installed on the lower end of the quick-release clamp 23, and a supporting structure 25 is fixedly installed on the lower end of the connecting plate 24.

[0035] In this embodiment, the movable thread sleeve 5 moves around the outer side of the merging screw 1, the mounting plates 6 on both sides are symmetrically arranged and installed, the two connecting rods 3 are bent and movable through the universal shaft 4, the shaft of the worm tooth 8 passes through the gear mounting plate 7 and is fixedly connected to the worm operating block 9, the universal shaft 4 plays the role of connecting the merging screws 1 on both sides, and the worm operating block 9 is used for wrench operation to drive the worm tooth 8 to rotate.

[0036] In this embodiment, a screw operating block 2 is welded to the end of the merging screw 1 opposite to the connecting rod 3, the threads of the two merging screws 1 are arranged oppositely, and the two merging screws 1 are symmetrically arranged and installed with the universal joint 4 as the center. The screw operating block 2 is used for wrench operation to drive the merging screw 1 to rotate.

[0037] In this embodiment, two screws are installed on the internal threads of the connecting clamp 10, and a mounting hole is opened at the bottom of the mounting plate 11. The screws pass through the installation at the bottom of the mounting plate 11. The mounting plate 11 and the connecting clamp 10 are installed and disassembled by screws.

[0038] In this embodiment, a first mounting rod 12 is fixedly installed on one side of the mounting plate 11, a positioning ring 13 is fixedly installed on the end of the first mounting rod 12 away from the mounting plate 11, a second mounting rod 14 is fixedly installed on the other side of the mounting plate 11, a conical ring 15 is fixedly installed on the end of the second mounting rod 14 away from the mounting plate 11, and the first mounting rod 12 and the second mounting rod 14 have the effect of extended installation.

[0039] In this embodiment, the clamping structure 16 includes an internally threaded sleeve 17, a telescopic sleeve 18, a shrinking sleeve 19, a worm gear 20, a reinforcement ring sleeve 21 and a rope threading hole 22. The internally threaded sleeve 17 is movably mounted on the inner side of the positioning ring 13, the telescopic sleeve 18 is threadedly mounted on one end of the internally threaded sleeve 17, the shrinking sleeve 19 is integrally formed at the end of the telescopic sleeve 18 opposite to the internally threaded sleeve 17, the worm gear 20 is fixedly mounted on the other end of the internally threaded sleeve 17, the reinforcement ring sleeve 21 is fixedly mounted on the end of the worm gear 20 opposite to the internally threaded sleeve 17, a plurality of rope threading holes 22 are provided on the ring wall of the reinforcement ring sleeve 21, and the positioning ring 13 has the effect of rotatably mounting the internally threaded sleeve 17.

[0040] In this embodiment, the telescopic sleeve 18 passes through the interior of the mounting plate 11, and the plurality of first mounting rods 12 and the second mounting rods 14 are located on the outside of the mounting plate 11. The outer side of the shrink sleeve 19 and the inner wall of the conical ring 15 are both conically arranged, and the shrink sleeve 19 is fitted and connected to the inner wall of the conical ring 15. The worm gear teeth 20 are meshed and connected with the worm teeth 8. A reinforcement rope 32 is passed through the rope threading hole 22 inside the reinforcement ring sleeve 21, and the worm gear teeth 8 drive the worm gear teeth 20 to rotate.

[0041] In this embodiment, the quick-release sleeve 23 rotates around the connecting rod 3 when it is loosened, and the two quick-release sleeves 23 are fixedly connected by a connecting plate 24. After the quick-release sleeve 23 is sleeved on the outside of the connecting rod 3, the two connecting rods 3 are fixed by the quick-release sleeve 23, and the connecting rod 3 can no longer rotate around the universal joint 4.

[0042] In this embodiment, the support structure 25 includes an overhead support rod 26, a limiting shaft 27, a first ring 28, a second ring 29, a first clamp ring 30 and a second clamp ring 31. The overhead support rod 26 is fixedly mounted on the lower end of the connecting plate 24, the limiting shaft 27 is fixedly mounted on the lower end of the overhead support rod 26, the first ring 28 is movably mounted on the outer side of the limiting shaft 27, the second ring 29 is arranged at the end of the first ring 28 opposite to the limiting shaft 27, the two first clamp rings 30 are movably mounted on both sides of the outside of the first ring 28, the second clamp ring 31 is movably mounted on the end of the first clamp ring 30 opposite to the first ring 28, the limiting shaft 27 plays the effect of movably mounting the first ring 28, and the screws on the limiting shaft 27 can be tightened for positioning.

[0043] In this embodiment, the first ring 28 is rotatable 90° around the limiting rotating shaft 27, and is arranged in a circular ring shape with the second ring 29. The ends of the first ring 28 and the second ring 29 are fixedly connected by screws. The two first clamp rings 30 and the second clamp rings 31 are located at the ends of the first ring 28. The second ring 29 and the first ring 28 are detachable structures, and are removed when the second ring 29 is not in use.

[0044] It should be noted that the present invention is a maintenance device for power supply lines. When in use, the mounting plate 11 and the connecting clamp block 10 are first separated, and the line end that needs to be repaired and connected passes through the shrink sleeves 19 and the telescopic sleeves 18 on both sides, and then the mounting plate 11 is inserted into the connecting clamp block 10 and screwed in, and at the same time, the worm teeth 8 are meshed and connected with the worm gear teeth 20, and then the worm operating block 9 is rotated to drive the worm teeth 8 to rotate, and the rotation of the worm teeth 8 drives it to rotate through the meshing connection with the worm gear teeth 20, and the rotation of the worm gear teeth 20 drives the internal threaded sleeve 17 to rotate in the positioning ring 13, and then the internal threaded sleeve 17 is driven to move to one side through the threaded connection with the telescopic sleeve 18, so that the telescopic sleeve 18 pulls the shrink sleeve 19 at one end to move into the conical ring 15, and the shrink sleeve is used to The conical structure of 19 and the conical ring 15 allows the shrink sleeve 19 to shrink when it moves into the conical ring 15. After the shrink sleeve 19 shrinks, the line passing through it is firmly clamped and fixed to achieve the initial fixation of the line. After the merging screw 1 is rotated by the screw operating block 2, the rotation of the merging screw 1 drives it to move to one side through the threaded connection with the moving thread sleeve 5. The two merging screws 1 rotate synchronously through the connecting rod 3 and the universal shaft 4, and the thread directions of the two merging screws 1 are opposite. The rotation of the two merging screws 1 drives the two moving thread sleeves 5 to move in opposite directions, so that the two moving thread sleeves 5 move closer to the center. When the two moving thread sleeves 5 move closer to the center, the two shrink sleeves 19 above are also moved closer, so that the line between the two shrink sleeves 19 is loosened, and the line can be repaired;

[0045] The worm gear 8 and the worm wheel gear 20 are driven by the worm gear 8 and the worm wheel gear 20, which are the driving structure of the worm gear. When the worm gear 8 drives the worm wheel gear 20 to rotate to drive the internal threaded sleeve 17 to shrink and move the telescopic sleeve 18, the lead angle of the worm gear 8 is smaller than the equivalent friction angle of the meshing worm wheel gear 20, and reverse self-locking can be achieved, that is, only the worm gear 8 can drive the worm wheel gear 20, but the worm wheel gear 20 cannot drive the worm gear 8 to rotate. Therefore, the telescopic sleeve 18 cannot move in the reverse direction, so that the shrink sleeve 19 firmly clamps and fixes the line to prevent the line from loosening.

[0046] When the directions of the two ends of the line are not the same, the merging screw 1 is first bent to make the two connecting rods 3 rotate around the universal shaft 4, and then the angle between the two merging screws 1 is adjusted until the two merging screws 1 are in the same direction as the two ends of the line, and then the mounting plate 11 is inserted into the connecting clamp 10 for installation. When the merging screws 1 on both sides are bent and rotated, the shrink sleeves 19 at different angles can be merged by driving the universal shaft 4 at different angles to keep rotating.

[0047] When the device is mounted on a pole, after the shrink sleeve 19 clamps the line, the quick-release clamping sleeve 23 is mounted on the outside of the connecting rod 3 to fix it, so that the connecting rods 3 and the combined screw 1 on both sides are fixed, and then the first ring 28 and the second ring 29 are mounted on the outside of the pole and tightened to fix them, so that the device is installed on the pole for support and use, so that the line can be mounted on the pole for maintenance;

[0048] When the device cooperates with other lines to be overheaded, the second ring 29 is separated from the first ring 28, and then the first ring 28 is rotated 90° around the limit rotation shaft 27 to be placed vertically, so that the first ring 28 is placed above the lower line, and then the second clamping ring 31 is separated from the first clamping ring 30, and then sleeved on the outer side of the lower line to merge, so that the second clamping ring 31 and the first clamping ring 30 are sleeved on the lower line for positioning, so that the second ring 29 vertically supports the upper part, so as to realize overhead during line maintenance;

[0049] After the line connection and maintenance, the installation vertical plate 11 is separated from the connecting clamp 10, so that the part on the installation vertical plate 11 remains on the line, and then the reinforcement rope 32 can be passed through the rope hole 22 inside the reinforcement ring sleeve 21 for fixing. The reinforcement rope 32 connects the reinforcement ring sleeves 21 on both sides, thereby reinforcing the middle of the line clamp at both ends, increasing the strength of the line after maintenance, and can also quickly connect the installation vertical plate 11 for overhead maintenance next time.

[0050] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A maintenance device for a power supply line, comprising a combined screw rod (1), a movable threaded sleeve (5) and a mounting plate (6), wherein the movable threaded sleeve (5) is threadedly sleeved on the outer side of the combined screw rod (1), and the mounting plate (6) is welded to the upper end of the movable threaded sleeve (5), characterized in that: The number of the combined screw rods (1) is two, and a connecting rod (3) is welded to the adjacent ends of the two combined screw rods (1), and a universal shaft (4) is fixedly installed to the adjacent ends of the two connecting rods (3). A gear mounting plate (7) is welded to one side of the top of the mounting plate (6), and a worm gear (8) is rotatably installed on the inner side of the gear mounting plate (7). A worm operating block (9) is rotatably installed at the front and rear ends of the gear mounting plate (7). A connecting clamping block (10) is integrally formed on the other side of the top of the mounting plate (6), and a mounting vertical plate (11) is inserted into the inner side of the connecting clamping block (10), and a clamping structure (16) is movably installed on the inner side of the mounting vertical plate (11). The outer sides of the two connecting rods (3) are fixedly sleeved with a quick-release clamping sleeve (23), and a connecting plate (24) is fixedly installed at the lower end of the quick-release clamping sleeve (23), and a supporting structure (25) is fixedly installed at the lower end of the connecting plate (24); A first mounting rod (12) is fixedly mounted on one side of the mounting plate (11), a positioning ring (13) is fixedly mounted on one end of the first mounting rod (12) away from the mounting plate (11), a second mounting rod (14) is fixedly mounted on the other side of the mounting plate (11), and a conical ring (15) is fixedly mounted on one end of the second mounting rod (14) away from the mounting plate (11); The clamping structure (16) comprises an internal thread sleeve (17), a telescopic sleeve (18), a shrink sleeve (19), worm gear teeth (20), a reinforcement ring sleeve (21) and a rope threading hole (22); the internal thread sleeve (17) is movably mounted on the inner side of the positioning ring (13); the telescopic sleeve (18) is threadedly mounted on one end of the internal thread sleeve (17); the shrink sleeve (19) is integrally formed on the end of the telescopic sleeve (18) opposite to the internal thread sleeve (17); the worm gear teeth (20) are fixedly mounted on the other end of the internal thread sleeve (17); the reinforcement ring sleeve (21) is fixedly mounted on the end of the worm gear teeth (20) opposite to the internal thread sleeve (17); and a plurality of rope threading holes (22) are provided on the ring wall of the reinforcement ring sleeve (21); The telescopic sleeve (18) passes through the interior of the mounting vertical plate (11), a plurality of first mounting rods (12) and a second mounting rod (14) are located outside the mounting vertical plate (11), the outer side of the shrink sleeve (19) and the inner wall of the conical ring (15) are both conically arranged, the shrink sleeve (19) is fitted and connected to the inner wall of the conical ring (15), the worm gear teeth (20) are meshed and connected to the worm gear teeth (8), and a reinforcement rope (32) is passed through the rope threading hole (22) inside the reinforcement ring sleeve (21).

2. A power supply line maintenance device according to claim 1, characterized in that: The movable thread sleeve (5) moves around the outer side of the combined screw (1), the mounting plates (6) on both sides are symmetrically arranged and installed, the two connecting rods (3) are bent and movable through the universal shaft (4), and the shaft of the worm gear (8) passes through the gear mounting plate (7) and is fixedly connected to the worm operating block (9).

3. A power supply line maintenance device according to claim 1, characterized in that: A screw operating block (2) is welded to the end of the merging screw (1) opposite to the connecting rod (3); the threads of the two merging screws (1) are arranged in opposite directions; and the two merging screws (1) are symmetrically arranged and installed with the universal shaft (4) as the center.

4. A power supply line maintenance device according to claim 1, characterized in that: Two screws are installed on the internal threads of the connecting clamp (10), and a mounting hole is provided at the bottom of the mounting vertical plate (11), and the screws penetrate the installation hole at the bottom of the mounting vertical plate (11).

5. A power supply line maintenance device according to claim 1, characterized in that: When the quick-release jacket (23) is released, it rotates around the connecting rod (3), and the two quick-release jackets (23) are fixedly connected via a connecting plate (24).

6. A power supply line maintenance device according to claim 1, characterized in that: The support structure (25) comprises an overhead support rod (26), a limit rotating shaft (27), a first sleeve ring (28), a second sleeve ring (29), a first clamp ring (30) and a second clamp ring (31); the overhead support rod (26) is fixedly mounted on the lower end of the connecting plate (24); the limit rotating shaft (27) is fixedly mounted on the lower end of the overhead support rod (26); the first sleeve ring (28) is movably mounted on the outer side of the limit rotating shaft (27); the second sleeve ring (29) is arranged at an end of the first sleeve ring (28) opposite to the limit rotating shaft (27); two first clamp rings (30) are movably mounted on both sides of the outer side of the first sleeve ring (28); and the second clamp ring (31) is movably mounted on an end of the first clamp ring (30) opposite to the first sleeve ring (28).

7. A power supply line maintenance device according to claim 6, characterized in that: The first ring (28) is rotatable at 90° around the limiting rotating shaft (27); the first ring (28) and the second ring (29) are arranged in a circular ring shape; the ends of the first ring (28) and the second ring (29) are fixedly connected by screws; and two first clamping rings (30) and a second clamping ring (31) are located at the ends of the first ring (28).

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