An electric tightening device for long-distance back-bolts of power transmission lines

Abstract

The present invention relates to an electric loosening and tightening device for a long-distance back-to-back bolt of a power transmission line, comprising an operating rod, a video module and a battery box are respectively arranged on the top of the operating rod, an adjusting device is connected to the top of the battery box, a motor is connected to the adjusting device, a control device and a fixing ring are respectively arranged at the middle of the operating rod, the fixing ring is arranged above the control device, a lifting lug is arranged on the fixing ring, and a connecting device is arranged at the bottom of the operating rod; the video module comprises a clamping part connected to the operating rod, an adjusting rod is arranged on the clamping part, and a camera is arranged on the adjusting rod; the adjusting device comprises a rotating support seat arranged on the top of the battery box, a ball head alloy base is connected to the upper part of the rotating support seat, a ball head alloy cover is connected to the upper part of the ball head alloy base, a ball head screw is arranged in the ball head alloy cover, the ball head screw is connected to the motor, and a sleeve is arranged on the motor.

Description

Technical Field

[0001] The invention relates to an electric tightening device for a long-distance back-to-back bolt of a power transmission line, which is applied in the technical field of power transmission line operating equipment. Background Art

[0002] As is known, the current treatment of loose bolts on the conductor side is generally divided into equipotential and ground potential remote treatment. Equipotential operation has high risks and cannot be carried out due to space limitations. Ground potential remote treatment can be carried out by manual and electric remote wrenches, but the tools currently on the market and in various places are mostly 180° turning tools in the forward direction, which can only handle the situation where the bolts are from outside to inside or from left (right) to right (left), etc., and the nuts are in the positive direction of the hardware. For bolts that penetrate from inside to outside, since the nuts are in the back of the hardware, there are currently no corresponding tools, and ground potential maintenance cannot be carried out. All can only be carried out with equipotential live maintenance or power-off maintenance; and the existing remote electric operation wrench is hard-connected to the operating rod with a plum head. When using it, the wrench angle is adjusted as needed. Because the electric wrench and the operating lever are hard-connected and the angle of swing is limited, some angles cannot be operated. In actual use, especially in the long-distance back-to-back bolt tightening operation, the nut position cannot be seen. For this, a physical method is adopted. Simply put, a small mirror is installed on the head of the operating lever, and the working surface is observed through the mirror for installation or removal. The disadvantage is that the mirror is easily collided and broken during operation, which poses a great safety hazard. Once the mirror is not clean, it will affect the observation of the working surface and work efficiency. In order to improve the timeliness, safety and work efficiency of live fault elimination, it is very necessary to develop a new type of long-distance bolt tightening device to realize the live tightening of various types of loose bolts on the wire side by the ground potential method, especially the tightening of long-distance back-to-back bolts. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides an electric tightening device for long-distance back bolts of transmission lines, which can effectively solve the problem of loosening of bolts on the side of various conductors fastened under the ground potential method, especially the tightening and loosening of long-distance back bolts, which is safe, efficient, time-saving and labor-saving.

[0004] The technical solution of the present invention is as follows:

[0005] A transmission line long-distance back-to-back bolt electric loosening device comprises an operating rod, a video module and a battery box are respectively arranged on the top of the operating rod, an adjusting device is connected to the top of the battery box, a motor is connected to the adjusting device, a control device and a fixing ring are respectively arranged in the middle of the operating rod, the fixing ring is arranged above the control device, a lifting lug is arranged on the fixing ring, and a connecting device is arranged at the bottom of the operating rod; the video module comprises a clamping part connected to the operating rod, an adjusting rod is arranged on the clamping part, and a camera is arranged on the adjusting rod; The adjusting device comprises a rotating support seat arranged on the top of the battery box, the upper part of the rotating support seat is connected to a ball head alloy base, the upper part of the ball head alloy base is connected to a ball head alloy cover, a ball head screw is arranged in the ball head alloy cover, the ball head screw is connected to a motor, and a sleeve is arranged on the motor; the control device comprises a switch arranged inside the operating rod, the switch is connected to an insulating rope, and the insulating rope is pulled out through a strip hole opened on the operating rod; the connecting device comprises a plum blossom connector fixed at the bottom of the operating rod and a butterfly nut arranged on the plum blossom connector.

[0006] The operating rod is a hollow cylindrical structure, the top of the operating rod is fixedly connected to the battery box, and the top surface of the battery box is non-detachably connected to the bottom surface of the rotating support seat.

[0007] The rotating support seat is a cylindrical structure, and a cylindrical connecting rod is integrally connected to the top of the rotating support seat. The diameter of the connecting rod is smaller than the diameter of the rotating support seat, and the outside of the connecting rod is movably connected to the ball head alloy base.

[0008] The ball head alloy base is a circular tubular structure, which is sleeved on the outside of the connecting rod. A through hole is opened on the side wall surface of the ball head alloy base, and an embossed knob is arranged in the through hole to fix the ball head alloy base on the upper part of the rotating support seat.

[0009] The upper part of the ball head alloy base is detachably connected to a ball head alloy cover, a first protrusion is integrally connected to the side wall surface of the ball head alloy base, a second protrusion is integrally connected to the side wall surface of the ball head alloy cover, and longitudinal connecting holes are provided on the first protrusion and the second protrusion. The ball head alloy base and the ball head alloy cover are fixed by arranging a pressure rod bolt in the connecting hole, a pressure rod nut is threadedly connected to the bottom of the pressure rod bolt, and a pressure rod is integrally connected to the side wall surface of the pressure rod nut.

[0010] A spherical groove is provided on the top surface of the ball head alloy cover, and an arc groove is provided on the side of the spherical groove. The spherical groove is rotatably connected to the ball portion of the ball head screw, and the rod portion of the ball head screw is connected to the motor by setting a locking motor nut; the output end of the motor is detachably connected to a sleeve.

[0011] The sleeve is a three-layer cylindrical structure, with a pin hole at the end of the sleeve. The sleeve is connected to the front end of the motor by arranging an R pin in the pin hole; the outermost cylinder at the front end of the sleeve has the largest diameter, and the inner wall of the outermost cylinder is inlaid with a plurality of magnetic balls. The diameter of the middle layer of the sleeve is smaller than the diameter of the outermost layer, and the middle layer is a plum blossom structure; the innermost layer of the sleeve has the smallest diameter; the sleeve is made of steel material, and an aluminum alloy ring is provided at the outermost part of the sleeve where the magnetic ball is installed, and the magnetic ball is inlaid on the ring.

[0012] The operating rod is externally sleeved with a plurality of fixing rings which are evenly distributed on the outer wall of the operating rod. The inner wall of the fixing ring is fixedly connected to the outer wall of the operating rod. The outer wall of the fixing ring is fixedly provided with a circular lifting ear.

[0013] One end of the insulating rope is fixedly connected to a switch arranged inside the operating rod by connecting a telescopic limit spring, and a pull ring is fixed to the other end of the insulating rope; a fixing frame is arranged at the strip hole, and two pulleys with a vertically symmetrical structure are arranged at the center of the fixing frame. The insulating rope is pulled out from the strip hole to the outside through the two pulleys, and a guide ring is arranged at the lower part of the strip hole, and a clamping ring is arranged at the lower part of the guide ring, and arc-shaped grooves for passing the insulating rope are opened on the inner wall surfaces of the guide ring and the clamping ring.

[0014] The present invention has the following beneficial effects:

[0015] 1. When the present invention is in use, the rod of the ball screw is connected to the motor, and the ball head of the ball screw is in the shape of a sphere, so that the motor body can rotate 360 ​​degrees without dead angles in the spherical groove opened on the upper part of the ball head alloy cover. No matter where the bolts to be repaired during live operation are, they can be rotated into place. In addition, the rod design of the ball screw plays a lengthening role, so that the motor can be adjusted left and right, and the arc groove opened on the side of the spherical groove allows the motor to rotate back to back, and the motor head can be completely turned back to back, which is convenient for live operation maintenance and repair, and adapts to all maintenance scenarios in live operation of power transmission lines (whether it is a forward bolt or an invisible back bolt); if there is still a position that is not in place and needs further adjustment, the embossed knob can be loosened, and the ball head alloy base can be rotated on the upper part of the rotating support seat, which can be rotated clockwise or counterclockwise. The angle and position can be adjusted according to the operation needs. After adjustment, the embossed knob can be tightened.

[0016] 2. By utilizing the video module provided by the present invention, during operation, the position of the camera can be pre-adjusted according to the adjustment rod connected to the clamping part. Then, during the operation using the motor and the sleeve, the live working personnel can see the real-time status of the back-facing bolt through the synchronous video of the camera on the mobile phone, and further guide the live working personnel to accurately fix the electric wrench sleeve on the maintenance bolt, so that the bolt to be repaired can be smoothly loosened or tightened to complete the live working work. The camera is fixed on the operating rod through the clamping part, so the live working personnel can also install or remove the video module according to different production tasks, which facilitates the completion of the work and adapts to all working surfaces of live working on transmission lines. It is safe, efficient, time-saving and labor-saving.

[0017] 3. In actual operation, since the distances of the working surfaces are different, the required lengths of the operating rods are also different. The two small pulleys that cooperate with each other in the control device provided by the present invention allow the insulating rope of the control switch to extend to the outside of the operating rod, and the force is further controlled by the telescopic limit spring. The insulating rope of the control switch can also be lengthened or shortened according to on-site needs, so that the live working personnel can lengthen or shorten the insulating operating rod as needed, reducing the workload and labor intensity.

[0018] 4. The sleeve provided on the motor provided by the present invention is used as an auxiliary positioning plug-in, and then assisted observation is performed through a video module. Even if the back-facing bolt cannot be seen from a distance under normal circumstances, we can also cooperate with the video module to guide the operator to accurately fix the sleeve on the bolt, loosen or tighten the nut, and complete the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the split structure of the regulating device in the present invention;

[0021] Figure 3 It is a side view structural schematic diagram of the fixing ring in the present invention;

[0022] Figure 4 It is a front view structural schematic diagram of the control device in the present invention;

[0023] Figure 5 It is a front view structural schematic diagram of the connecting device in the present invention;

[0024] Figure 6 A schematic diagram of the use state of the regulating device in the present invention;

[0025] The reference numerals in the figure represent:

[0026] 1. Operating lever; 2. Control device; 21. Guide ring; 22. Insulating rope; 23. Pulley; 24. Snap ring; 25. Fixed bracket; 3. Connecting device; 31. Plum blossom connector; 32. Butterfly nut; 4. Fixing ring; 41. Lifting ear; 5. Video module; 51. Clamping part; 52. Adjusting rod; 53. Camera; 6. Battery box; 7. Adjusting device; 71. Locking motor nut; 72. Ball screw; 73. Ball alloy cover; 74. Press rod bolt; 75. Ball alloy base; 76. Press rod nut; 77. Press rod; 78. Embossed knob; 79. Rotating support seat; 8. Motor; 9. Sleeve. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] See also Figures 1 to 6 The electric tightening device for long-distance back-to-back bolts of a power transmission line comprises an operating rod 1, a video module 5 and a battery box 6 are respectively arranged on the top of the operating rod 1, an adjusting device 7 is connected to the top of the battery box 6, a motor 8 is connected to the adjusting device 7, a control device 2 and a fixing ring 4 are respectively arranged in the middle of the operating rod 1, the fixing ring 4 is arranged above the control device 2, a lifting lug 41 is arranged on the fixing ring 4, and a connecting device 3 is arranged at the bottom of the operating rod 1; the video module 5 comprises a clamping portion 51 connected to the operating rod 1, an adjusting rod 52 is arranged on the clamping portion 51, and a camera 53 is arranged on the adjusting rod 52; the The adjusting device 7 includes a rotating support seat 79 arranged on the top of the battery box 6, the upper part of the rotating support seat 79 is connected to a ball head alloy base 75, the upper part of the ball head alloy base 75 is connected to a ball head alloy cover 73, a ball head screw 72 is arranged in the ball head alloy cover 73, the ball head screw 72 is connected to the motor 8, and a sleeve 9 is arranged on the motor 8; the control device 2 includes a switch arranged inside the operating rod 1, the switch is connected to an insulating rope 22, and the insulating rope 22 is pulled out through a strip hole opened on the operating rod 1; the connecting device 3 includes a plum blossom connector 31 fixed to the bottom of the operating rod 1 and a butterfly nut 32 arranged on the plum blossom connector 31.

[0029] The operating rod 1 is a hollow cylindrical structure. The top of the operating rod 1 is fixedly connected to the battery box 6. The top surface of the battery box 6 is non-detachably connected to the bottom surface of the rotating support seat 79.

[0030] The rotating support seat 79 is a cylindrical structure, and a cylindrical connecting rod is integrally connected to the top of the rotating support seat 79 . The diameter of the connecting rod is smaller than the diameter of the rotating support seat 79 , and the outside of the connecting rod is movably connected to the ball head alloy base 75 .

[0031] The ball head alloy base 75 is a circular tubular structure, which is sleeved on the outside of the connecting rod. A through hole is opened on the side wall of the ball head alloy base 75, and an embossed knob 78 is set in the through hole to fix the ball head alloy base 75 on the upper part of the rotating support seat 79.

[0032] The upper part of the ball head alloy base 75 is detachably connected to the ball head alloy cover 73, the side wall surface of the ball head alloy base 75 is integrally connected with a first protrusion, the side wall surface of the ball head alloy cover 73 is integrally connected with a second protrusion, the first protrusion and the second protrusion are both provided with longitudinal connecting holes, the ball head alloy base 75 and the ball head alloy cover 73 are fixed by arranging a pressure rod bolt 74 in the connecting hole, the bottom of the pressure rod bolt 74 is threadedly connected with a pressure rod nut 76, and the side wall surface of the pressure rod nut 76 is integrally connected with a pressure rod 77.

[0033] A spherical groove is provided on the top surface of the ball head alloy cover 73, and an arc groove is provided on the side of the spherical groove. The spherical groove is rotatably connected to the ball part of the ball head screw 72, and the rod part of the ball head screw 72 is connected to the motor 8 by setting a locking motor nut 71; the output end of the motor 8 is detachably connected to the sleeve 9.

[0034] The sleeve 9 is a three-layer cylindrical structure, and a pin hole is provided at the end of the sleeve 9. The sleeve 9 is connected to the front end of the motor 8 by arranging an R pin in the pin hole; the outermost cylinder at the front end of the sleeve 9 has the largest diameter, and the outermost layer is used to place the gasket. The inner wall of the outermost cylinder is inlaid with a number of magnetic balls, and the small tools such as shrapnel and gaskets are firmly adsorbed by the magnetic force of the magnetic balls. The diameter of the middle layer of the sleeve 9 is smaller than the diameter of the outermost layer, and the middle layer is a plum blossom structure; the innermost layer of the sleeve 9 has the smallest diameter, and the innermost layer is used to clamp the nut; the sleeve 9 is made of steel material, and an aluminum alloy ring is provided on the outermost part of the sleeve 9 where the magnetic ball is installed, and the magnetic ball is inlaid on the ring, so that the material will not be demagnetized and can withstand the instantaneous impact force of the electric wrench during use. The magnetic force of the magnetic ball is utilized, and through the auxiliary effect of the video module 5, the purpose of positioning the bolts on the tower and quickly repairing it can be achieved quickly and efficiently.

[0035] The operating rod 1 is externally sleeved with a plurality of fixing rings 4 which are evenly distributed on the outer wall of the operating rod 1 . The inner wall of the fixing ring 4 is fixedly connected to the outer wall of the operating rod 1 . An annular lifting ear 41 is fixedly provided on the outer wall of the fixing ring 4 .

[0036] One end of the insulating rope 22 is fixedly connected to the switch arranged inside the operating rod 1 by connecting a telescopic limit spring, and a pull ring is fixed to the other end of the insulating rope 22; a fixing frame 25 is arranged at the strip hole, and two pulleys 23 with a vertically symmetrical structure are arranged at the center of the fixing frame 25. The insulating rope 22 is pulled out from the strip hole to the outside through the two pulleys 23, and a guide ring 21 is arranged at the lower part of the strip hole, and a clamping ring 24 is arranged at the lower part of the guide ring 21. The inner wall surfaces of the guide ring 21 and the clamping ring 24 are both provided with arc grooves for passing the insulating rope 22.

[0037] Working principle of the present invention:

[0038] When using the present invention, first, the switch of the control device 2 is hidden in the insulating operating rod 1 to avoid safety hazards caused by accidental collision with the switch. The insulating rope 22 connected to the switch ensures a safe and effective distance for live operations on the power transmission line. The switch control part extends the insulating rope 22 outside the operating rod 1 through two small pulleys 23 that cooperate with each other up and down, and uses a telescopic limit spring to control the force. The guide ring 21 and the clamping ring 24 are set on the outside of the operating rod 1. The arc groove set inside the guide ring 21 and the clamping ring 24 are used as guide grooves for the insulating rope 22 to ensure that the insulating rope 22 is smooth and not knotted during use. The insulating rope 22 of the control switch can be lengthened or shortened according to on-site needs. The connection set at the bottom of the operating rod 1 In the device 3, through the universal plum blossom connector 31, it is convenient for live workers to lengthen or shorten the remote operation of the operating rod 1 according to the on-site conditions, and the insulating rope 22 of the control switch can also be lengthened or shortened at the same time. The fixing ring 4 and the lifting ear 41 provided on the outside of the operating rod 1 are used as a fulcrum, and the lifting rope can be inserted into the lifting ear 41 to reinforce the operating rod 1, which solves the problem of difficult remote operation of the power transmission line, greatly improves the work efficiency of live workers, and reduces the risk of high-altitude operation; the rod part of the ball screw 72 in the adjustment device 7 is connected to the motor 8, and the ball head of the ball screw 72 is in the shape of a sphere, so that the main body of the motor 8 can be 360 ​​degrees in the spherical groove opened on the upper part of the ball head alloy cover 73 The bolt 75 can be rotated without dead angles, and can be rotated into place at any position of the bolt to be repaired during live working. In addition, the rod design of the ball screw 72 has a lengthening effect, so that the motor 8 can be adjusted left and right, and the arc groove opened on the side of the spherical groove allows the motor 8 to rotate in the back direction. The head of the motor 8 can be completely turned into the back direction, which is convenient for live working maintenance and repair, and adapts to all maintenance scenarios in live working of power transmission lines (whether it is a forward bolt or an invisible back bolt); if there is still a position that is not in place and needs further adjustment, the embossed knob 78 can be loosened, and the ball head alloy base 75 can be rotated on the upper part of the rotating support seat 79. It can be rotated clockwise or counterclockwise, and the angle and The position can be adjusted according to the operation needs. After adjustment, tighten the embossed knob 78. A lithium battery is arranged in the battery box 6. When in use, it is protected by a switch controller to prevent the battery pack from overloading and overheating. The battery output and temperature stability are effectively controlled. When not in use, it will not self-discharge, thus extending the battery life and endurance. Later maintenance is simpler and the failure rate is lower. To replace the battery, you only need to open the protective shell of the battery box 6, which is convenient for installation. The motor 8 uses an industrial-grade brushless electric wrench, which has strong power, low energy consumption, long life, high efficiency, no carbon brushes, and is maintenance-free. The strong torque is suitable for most live transmission line maintenance work, and can be remotely controlled on the cross arm side under high voltage and strong magnetic interference.When the video module 5 is in operation, the position of the camera 53 can be pre-adjusted according to the adjustment rod 52 connected to the clamping part 51. Then, during the operation of the motor 8 and the sleeve 9, the live working personnel can see the real-time status of the back-facing bolt through the synchronous video of the camera 53 on the mobile phone, and further guide the live working personnel to accurately fix the sleeve 9 on the maintenance bolt, so that the bolt to be repaired can be smoothly loosened or locked to complete the live working work; the camera 53 is fixed on the operating rod 1 through the clamping part 51, so the live working personnel can also install or remove the video module 5 according to different production tasks, which is convenient for the completion of the work and adapts to all working surfaces of the live working of the power transmission line, which is safe, efficient, time-saving and labor-saving; the sleeve 9 set on the motor 8 is used as an auxiliary positioning plug-in, and then the video module 5 is used for auxiliary observation. Even if the back-facing bolt whose position cannot be seen from a distance under normal circumstances, we can cooperate with the video module 5 to guide the operator to accurately fix the sleeve 9 on the bolt, loosen or lock the nut, and complete the work. ;

[0039] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An electric tightening device for long-distance back-bolts of power transmission lines, characterized in that: The invention comprises an operating rod (1), wherein a video module (5) and a battery box (6) are respectively arranged at the top of the operating rod (1), an adjusting device (7) is connected to the top of the battery box (6), and a motor (8) is connected to the adjusting device (7), a control device (2) and a fixing ring (4) are respectively arranged at the middle of the operating rod (1), the fixing ring (4) is arranged above the control device (2), and a lifting ear (41) is arranged on the fixing ring (4), and a connecting device (3) is arranged at the bottom of the operating rod (1); the video module (5) comprises a clamping portion (51) connected to the operating rod (1), an adjusting rod (52) is arranged on the clamping portion (51), and a camera (52) is arranged on the adjusting rod (52). 3); the adjusting device (7) comprises a rotating support seat (79) arranged on the top of the battery box (6); the upper part of the rotating support seat (79) is connected to a ball head alloy base (75); the upper part of the ball head alloy base (75) is connected to a ball head alloy cover (73); a ball head screw (72) is arranged in the ball head alloy cover (73); the ball head screw (72) is connected to the motor (8); the motor (8) is provided with a sleeve (9); the control device (2) comprises a switch arranged inside the operating rod (1); the switch is connected to an insulating rope (22); the insulating rope (22) is pulled out through a strip hole provided on the operating rod (1); the connecting device (3) comprises a plum blossom fixed at the bottom of the operating rod (1); The invention relates to a connecting head (31) and a butterfly nut (32) arranged on the plum blossom connecting head (31); the operating rod (1) is a hollow cylindrical structure, the top of the operating rod (1) is fixedly connected to the battery box (6), and the top surface of the battery box (6) is non-detachably connected to the bottom surface of the rotating support seat (79); the rotating support seat (79) is a cylindrical structure, the top of the rotating support seat (79) is integrally connected with a cylindrical connecting rod, the diameter of the connecting rod is smaller than the diameter of the rotating support seat (79), and the outside of the connecting rod is movably connected to the ball head alloy base (75); the ball head alloy base (75) is a circular tubular structure, the ball head alloy base (75) is sleeved on the outside of the connecting rod, and a through hole is opened on the side wall surface of the ball head alloy base (75). An embossed knob (78) is provided in the through hole to fix the ball head alloy base (75) to the upper part of the rotating support seat (79); the upper part of the ball head alloy base (75) is detachably connected to a ball head alloy cover (73); a first convex portion is integrally connected to the side wall surface of the ball head alloy base (75); a second convex portion is integrally connected to the side wall surface of the ball head alloy cover (73); longitudinal connecting holes are provided on the first convex portion and the second convex portion; a pressure rod bolt (74) is provided in the connecting hole to fix the ball head alloy base (75) and the ball head alloy cover (73); a pressure rod nut (76) is threadedly connected to the bottom of the pressure rod bolt (74); a pressure rod (77) is integrally connected to the side wall surface of the pressure rod nut (76);A spherical groove is provided on the top surface of the ball head alloy cover (73), and an arc groove is provided on the side of the spherical groove. The spherical groove is rotatably connected to the ball portion of the ball head screw (72), and the rod portion of the ball head screw (72) is connected to the motor (8) by providing a lock motor nut (71); the output end of the motor (8) is detachably connected to a sleeve (9); one end of the insulating rope (22) is fixedly connected to a switch provided inside the operating rod (1) by connecting a telescopic limit spring, and the insulating rope (22) is ) is fixed with a pull ring at the other end; a fixing frame (25) is provided at the strip-shaped hole, two pulleys (23) in a vertically symmetrical structure are provided at the center of the fixing frame (25), the insulating rope (22) is pulled out from the strip-shaped hole through the two pulleys (23), a guide ring (21) is provided at the lower part of the strip-shaped hole, a clamping ring (24) is provided at the lower part of the guide ring (21), and an arc-shaped groove for passing the insulating rope (22) is provided on the inner wall surfaces of the guide ring (21) and the clamping ring (24). ; 2. The electric tightening device for long-distance back-bolts of a power transmission line according to claim 1, characterized in that: The sleeve (9) is a three-layer cylindrical structure, a pin hole is provided at the end of the sleeve (9), and the sleeve (9) is connected to the front end of the motor (8) by arranging an R pin in the pin hole; the outermost cylinder at the front end of the sleeve (9) has the largest diameter, and the inner wall of the outermost cylinder is inlaid with a plurality of magnetic balls; the diameter of the middle layer of the sleeve (9) is smaller than the diameter of the outermost layer, and the middle layer is a plum blossom structure; the innermost layer of the sleeve (9) has the smallest diameter; the sleeve (9) is made of steel material, and an aluminum alloy ring is provided at the outermost portion of the sleeve (9) where the magnetic balls are installed, and the magnetic balls are inlaid on the ring.

3. The electric tightening device for long-distance back-bolts of a power transmission line according to claim 1, characterized in that: The operating rod (1) is sleeved with a plurality of fixing rings (4) on its exterior. The fixing rings (4) are equidistantly distributed on the outer wall surface of the operating rod (1). The inner wall surface of the fixing ring (4) is fixedly connected to the outer wall surface of the operating rod (1). An annular lifting ear (41) is fixedly provided on the outer wall of the fixing ring (4).

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