Overhead power transmission cable traction device and use method

Abstract

The invention discloses an overhead transmission cable traction device and a using method. The overhead transmission cable traction device comprises a rack, a torque limiting unit and an adjusting unit. The right side of the upper end of the rack is rotationally connected with a driving shaft, and the middle of the rack is rotationally connected with a traction cylinder; the torque limiting unit comprises a flange seat, a groove shaft, steel balls, a pressing sleeve, a spring seat and a first spring, the flange seat is arranged at the right end of the traction cylinder, the groove shaft is arranged at the left end of the driving shaft, the left end of the outer arc face of the groove shaft is movably sleeved with the pressing sleeve, and the steel balls which are evenly distributed are installed in the pressing sleeve; according to the overhead power transmission cable traction device and the use method, the overhead power transmission cable traction device is provided with a torque protection assembly, traction of traction ropes with different strengths is facilitated, the traction ropes can be prevented from being snapped, and the safety and convenience of overhead power transmission cable erection are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power construction, and in particular to an overhead power transmission cable traction device and a use method thereof. Background Art

[0002] Overhead transmission cables play an important role in power transmission. The construction cost of overhead transmission lines is low, and the maintenance and upgrading costs are also relatively low. They can effectively save the cost of power grid construction and improve the economy and sustainability of the power grid. In the process of laying overhead transmission cables, drones will be used to pass the lighter traction rope from above the pole frame, and then the construction workers will use the traction device to drag the traction rope to achieve the traction of the overhead transmission cable. In order to facilitate the lifting of the drone, the initial traction rope is lighter, and the diameter is thinner and the tensile capacity is limited. Therefore, during the traction process, the initial traction rope will be replaced with a thicker traction rope for the final traction. The initial traction rope is generally more laborious to drag by manpower, and some traction equipment such as motorized capstans are used for traction, but these devices generally lack torque protection and torque adjustment structure, and have a large traction force. When the resistance of the traction rope exceeds its own upper limit of tension, continuous traction can easily tear it off, affecting the safety and convenience of use. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide an overhead power transmission cable traction device and a method of use. The device is provided with a torque protection component. The output torque is adjustable to control its own winding torque, which is convenient for traction of traction ropes of different strengths and can avoid breaking of the traction ropes, thereby improving the safety of the installation of overhead power transmission cables. The output torque can be adjusted conveniently and labor-savingly, which greatly improves the convenience of using the overhead power transmission cable traction device and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: an overhead power transmission cable traction device, comprising a frame, a torque limiting unit and an adjustment unit; Frame: The right side of the upper end is rotatably connected to the driving shaft, and the middle part of the frame is rotatably connected to the traction cylinder; Torque limiting unit: it includes a flange seat, a grooved shaft, steel balls, a press sleeve, a spring seat and a spring 1, wherein the flange seat is arranged at the right end of the traction cylinder, the grooved shaft is arranged at the left end of the driving shaft, the left end of the outer arc surface of the grooved shaft is movably sleeved with a press sleeve, and steel balls evenly distributed are installed inside the press sleeve, the right end of the flange seat and the left end of the outer arc surface of the grooved shaft are provided with grooves corresponding to the steel balls one by one, the right end of the outer arc surface of the grooved shaft is movably sleeved with a spring seat and a spring 1, and the spring 1 is located between the spring seat and the press sleeve; Adjustment unit: It is used to adjust the position of the spring seat. It is equipped with a torque protection component. The adjustable output torque can control its own winding torque, which is convenient for traction of traction ropes of different strengths. It can avoid the breaking of the traction rope and improve the safety of the installation of overhead power transmission cables. The output torque adjustment is convenient and labor-saving, which greatly improves the convenience of using the overhead power transmission cable traction device.

[0005] Furthermore, the torque limiting unit also includes a retaining ring, which is arranged at the right end of the outer arc surface of the groove shaft. The retaining ring is located on the right side of the spring seat to limit the movement range of the spring seat.

[0006] Furthermore, the adjustment unit includes a support shaft, a lever, an adjustment seat and a sliding column. The support shaft is arranged at the upper end of the frame. The outer arc surface of the support shaft is rotatably connected to the lever. The rear end of the lever is provided with a sliding column. The left end of the adjustment seat is rotatably connected to the spring seat, and the right end of the adjustment seat is slidably connected to the frame. The long sliding hole at the upper right end of the adjustment seat is slidably connected to the sliding column, which facilitates the control of the movement of the spring seat.

[0007] Furthermore, the adjustment unit also includes a socket and a positioning shaft, the socket is slidably connected to the middle of the lever, the upper surface of the frame is provided with evenly distributed positioning shafts, and the socket is movably engaged with the longitudinally corresponding positioning shafts to facilitate the positioning of the lever.

[0008] Furthermore, the front end of the lever is slidably connected to a handle, the rear end of the handle is fixedly connected to the socket, a second spring is installed inside the handle, a positioning block is provided at the front end of the handle, and the second spring is located between the socket and the positioning block to facilitate the operation of the lever and the socket.

[0009] Furthermore, a worm wheel is provided in the middle of the outer arc surface of the driving shaft, a worm is rotatably connected to the middle of the frame, the worm wheel and the worm are meshingly connected, a motor is provided at the rear end of the frame, the output shaft of the motor is fixedly connected to the rear end of the worm, a control switch is provided at the front end of the frame, the input end of the motor is electrically connected to the output end of the control switch, and the input end of the control switch is electrically connected to an external power supply, so as to facilitate the rotation of the driving shaft.

[0010] Furthermore, the left end of the frame is rotatably connected to two support arms, and the upper ends of the two support arms are fixedly connected to the shaft sleeve at the left end of the traction cylinder, providing support for the left end of the traction cylinder.

[0011] A method for using an overhead power transmission cable traction device comprises the following steps: (S1: Preparation: Anchor the frame to the ground, loosen the support arm, wrap the traction rope of the overhead power transmission cable around the traction drum for more than five turns, and then fix the support arm to support the left end of the traction drum; (S2: Adjust the output torque: pull the handle forward, the handle drives the clamping seat to move forward along the lever and separate from the positioning shaft, the handle drives the lever to rotate around the support shaft, the rear end of the lever drives the spring seat to move through the sliding column and the adjustment seat, and the compression degree of the spring 1 is adjusted according to the diameter and material of the traction rope, the clamping seat is connected with the positioning shaft to position the spring seat; (S3: Traction: The motor is running, the output shaft of the motor drives the driving shaft to rotate through the worm and the worm gear, the driving shaft drives the traction drum to rotate through the grooved shaft, the steel ball and the flange seat, and the traction drum winds the traction rope to achieve traction of the overhead transmission cable; (S4: Work completed: The motor stops working and the overhead transmission cable is fixed to the tower Furthermore, when traction is performed, if the overhead power transmission cable or the traction rope is stuck, the flange seat slips and the traction drum stops rotating, the traction of the traction rope is stopped to avoid breaking, the motor stops working, and traction continues after the resistance is eliminated.

[0012] Compared with the prior art, the beneficial effects of the present invention are: the overhead power transmission cable traction device and the use method have the following advantages: 1. The automatic rotation of the traction drum can entangle the traction rope of the overhead power transmission cable to achieve the traction of the overhead power transmission cable, thereby reducing the labor burden of the installation personnel and improving the installation efficiency of the overhead power transmission cable.

[0013] 2. It is equipped with a torque protection component. The adjustable output torque can control its own winding torque, which is convenient for traction of traction ropes of different strengths. After overload, the transmission flange seat and the steel ball will slip, which can prevent the traction force from being greater than the upper limit of the traction rope, and can prevent the traction rope from breaking, thereby improving the safety of the installation of overhead power transmission cables.

[0014] 3. The pressure of the steel ball can be adjusted by using the lever structure through the operating handle. The force-applying end of the lever has a large force arm, which saves effort in operation and can be self-locking, thereby greatly improving the convenience of using the overhead power transmission cable traction device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic cross-sectional structural diagram of the regulating unit of the present invention; Figure 3 This is a schematic diagram of the enlarged structure of location A of the present invention; Figure 4 It is a schematic cross-sectional structural diagram of the torque limiting unit of the present invention; Figure 5 It is a schematic diagram of the exploded structure of the torque limiting unit of the present invention.

[0016] In the figure: 1 frame, 2 traction cylinder, 3 drive shaft, 4 torque limiting unit, 41 flange seat, 42 groove shaft, 43 steel ball, 44 pressure sleeve, 45 spring seat, 46 spring one, 47 retaining ring, 5 adjustment unit, 51 support shaft, 52 lever, 53 adjustment seat, 54 slide column, 55 clamping seat, 56 positioning shaft, 6 worm gear, 7 worm, 8 motor, 9 control switch, 10 support arm, 11 handle, 12 positioning block, 13 spring two. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figure 1-5 ,This embodiment provides a technical solution: an overhead power transmission cable traction device, including a frame 1, a torque limiting unit 4 and an adjustment unit 5; Frame 1: The right side of its upper end is rotatably connected to a drive shaft 3 to anchor the frame 1 to the ground. The middle part of the frame 1 is rotatably connected to a traction drum 2 to wind the traction rope of the overhead power transmission cable around the drive shaft 3. The number of windings is more than four. The traction rope is tightened in the middle of the traction drum 2. As the traction drum 2 rotates, the traction rope is wound to achieve traction of the overhead power transmission cable. A worm gear 6 is provided in the middle of the outer arc surface of the drive shaft 3. The middle part of the frame 1 is rotatably connected to a worm 7. The worm gear 6 is meshed with the worm 7. A motor 8 is provided at the rear end of the frame 1. The output shaft of the motor 8 is fixedly connected to the rear end of the worm 7. A control switch 9 is provided at the front end of the frame 1. The input end of the motor 8 is electrically connected to the output of the control switch 9. The input end of the control switch 9 is electrically connected to an external power supply, the motor 8 is running, the output shaft of the motor 8 drives the worm 7 to rotate, the worm 7 drives the drive shaft 3 to rotate through the worm gear 6, and the left end of the frame 1 is rotatably connected to two support arms 10, the upper ends of the two support arms 10 are fixedly connected to the shaft sleeve at the left end of the traction cylinder 2, and the bolts at the upper ends of the two support arms 10 are loosened with a wrench, the two support arms 10 are rotated to open and separated from the shaft sleeve at the left end of the traction cylinder 2, and the support arms 10 are rotated to reset, and the upper ends of the two support arms 10 are connected and fixed with bolts at the same time, the two support arms 10 clamp the shaft sleeve at the left end of the traction cylinder 2 and provide support at the same time, and the left end of the traction cylinder 2 is rotatably connected to the shaft sleeve through a bearing; Torque limiting unit 4: It includes a flange seat 41, a grooved shaft 42, a steel ball 43, a pressing sleeve 44, a spring seat 45 and a spring 46. The flange seat 41 is arranged at the right end of the traction cylinder 2, and the grooved shaft 42 is arranged at the left end of the driving shaft 3. The left end of the outer arc surface of the grooved shaft 42 is movably sleeved with a pressing sleeve 44, and the inside of the pressing sleeve 44 is installed with uniformly distributed steel balls 43. The right end of the flange seat 41 and the left end of the outer arc surface of the grooved shaft 42 are both provided with grooves corresponding to the steel balls 43 one by one. The right end of the outer arc surface of the grooved shaft 42 is movably sleeved with a spring seat 45 and a spring 46, and the spring 46 is located between the spring seat 45 and the pressing sleeve 44. The driving shaft 3 drives the grooved shaft 42 to rotate, and the steel ball 43 is in the groove at the left end of the grooved shaft 42 and the inside of the pressing sleeve 44. At the same time, the pressing sleeve 44 presses the steel ball 43 into the groove at the right end of the flange seat 41 under the action of the spring 46. Inside, the groove shaft 42 will drive the flange seat 41 and the traction cylinder 2 to rotate through the steel ball 43. The torque limiting unit 4 also includes a retaining ring 47. The pressure of the compression sleeve 44 is adjusted according to the diameter and material of the traction rope. When the overhead power transmission cable or the traction rope is blocked, the required traction force will increase sharply. At this time, the rotation resistance of the compression sleeve 41 increases, and the steel ball 43 will not be able to move the flange seat 41 to rotate. The flange seat 41 exerts a rightward force on the steel ball 43 that is greater than the pressure of the spring 46, and then the steel ball 43 will slide relative to the flange seat 41 and move out of the groove of the flange seat 41. The flange seat 41 slips and the traction cylinder 2 stops rotating, thereby avoiding breaking the traction rope. The retaining ring 47 is arranged at the right end of the outer arc surface of the groove shaft 42, and the retaining ring 47 is located on the right side of the spring seat 45. The retaining ring 47 limits the farthest position of the spring seat 45; Adjusting unit 5: used for adjusting the position of spring seat 45, adjusting unit 5 comprises supporting shaft 51, lever 52, adjusting seat 53 and sliding column 54, supporting shaft 51 is arranged at the upper end of frame 1, outer arc surface of supporting shaft 51 is rotatably connected with lever 52, rear end of lever 52 is provided with sliding column 54, left end of adjusting seat 53 is rotatably connected with spring seat 45, right end of adjusting seat 53 is slidably connected with frame 1, long sliding hole at the upper right end of adjusting seat 53 is slidably connected with sliding column 54, lever 52 rotates around supporting shaft 51, lever 52 drives sliding column 54 to rotate around supporting shaft 51, sliding column 54 and long sliding hole at the upper right end of adjusting seat 53 slide relative to each other and drive adjusting seat 53 to move longitudinally along frame 1, adjusting seat 53 drives spring seat 45 to move laterally along groove shaft 42, and adjusting unit 51 is provided with supporting shaft 51, lever 52 drives sliding column 54 to rotate around supporting shaft 51, sliding column 54 and long sliding hole at the upper right end of adjusting seat 53 slide relative to each other and drive adjusting seat 53 to move longitudinally along frame 1, adjusting seat 53 drives spring seat 45 to move laterally along groove shaft 42, and adjusting unit 52 is provided with supporting shaft 51, lever 52 drives sliding column 54 Element 5 also includes a socket 55 and a positioning shaft 56. The socket 55 is slidably connected to the middle part of the lever 52. The upper surface of the frame 1 is provided with uniformly distributed positioning shafts 56. The socket 55 is movably engaged with the longitudinally corresponding positioning shafts 56. The socket 55 is movably engaged with the longitudinally corresponding positioning shafts 56, thereby limiting the rotation of the lever 52 and positioning the spring seat 45. The front end of the lever 52 is slidably connected with a handle 11, and the rear end of the handle 11 is fixedly connected to the socket 55. A spring 2 13 is installed inside the handle 11. The handle 11 drives the socket 55 to move forward along the lever 52. The socket 55 moves forward to separate from the positioning shaft 56 and squeeze the spring 2 13. A positioning block 12 is provided at the front end of the handle 11. The spring 2 13 is located between the socket 55 and the positioning block 12, and the positioning block 12 provides support for the spring 2 13.

[0019] A method for using an overhead power transmission cable traction device comprises the following steps: (S1: Preparation: Anchor the frame 1 on the ground, loosen the support arm 10, wrap the traction rope of the overhead power transmission cable around the traction drum 2 for more than five turns, and then fix the support arm 10 to support the left end of the traction drum 2; (S2: Adjust the output torque: pull the handle 11 forward, the handle 11 drives the clamping seat 55 to move forward along the lever 52 and separate from the positioning shaft 56, the handle 11 drives the lever 52 to rotate around the support shaft 51, the rear end of the lever 52 drives the spring seat 45 to move through the sliding column 54 and the adjustment seat 53, and the compression degree of the spring 1 46 is adjusted according to the diameter and material of the traction rope, and the clamping seat 55 is engaged with the positioning shaft 56 to position the spring seat 45; (S3: Traction: The motor 8 is running, and the output shaft of the motor 8 drives the drive shaft 3 to rotate through the worm 7 and the worm wheel 6. The drive shaft 3 drives the traction drum 2 to rotate through the groove shaft 42, the steel ball 43 and the flange seat 41. The traction drum 2 winds the traction rope to achieve traction of the overhead power transmission cable. When traction is performed, if the overhead power transmission cable or the traction rope is blocked, the flange seat 41 slips and the traction drum 2 stops rotating, and the traction of the traction rope is stopped to avoid breaking. The motor 8 stops working, and the traction is continued after the resistance is eliminated; (S4: Work completed: the motor 8 stops working and the overhead transmission cable is fixed to the tower.

[0020] The working principle of an overhead power transmission cable traction device and a method of use provided by the present invention is as follows: before use, the frame 1 is anchored to the ground, and then a wrench is used to loosen the bolts on the upper ends of the two support arms 10, and the two support arms 10 are rotated open to separate from the shaft sleeve at the left end of the traction cylinder 2, and then the traction rope of the overhead power transmission cable is wound around the drive shaft 3, and the number of winding turns is more than four. After the winding is completed, the support arm 10 is rotated and reset, and the upper ends of the two support arms 10 are connected and fixed with bolts at the same time. The two support arms 10 clamp the shaft sleeve at the left end of the traction cylinder 2 and provide support at the same time. The left end of the traction cylinder 2 is rotatably connected to the shaft sleeve through a bearing, and then the pressure of the pressing sleeve 44 is adjusted according to the diameter and material of the traction rope. During adjustment, Pull the handle 11 forward, the handle 11 drives the holder 55 to move forward along the lever 52, the holder 55 moves forward and separates from the positioning shaft 56 and squeezes the spring 13, and then the handle 11 can be pulled left or right, the handle 11 drives the lever 52 to rotate around the support shaft 51, the lever 52 drives the sliding column 54 to rotate around the support shaft 51, the sliding column 54 and the long sliding hole at the upper right end of the adjustment seat 53 slide relative to each other and drive the adjustment seat 53 to move longitudinally along the frame 1, the adjustment seat 53 drives the spring seat 45 to move laterally along the groove shaft 42, so as to adjust the compression degree of the spring 1 46, the greater the angle of the handle 11 tilting to the right, the greater the compression degree of the spring 1 46, and the greater the torque transmitted, and the adjustment is adjusted to the specified value. After the gear is in the gear position, the handle 11 is moved backward, and the handle 11 drives the card seat 55 to engage with the longitudinal corresponding positioning shaft 56, thereby limiting the rotation of the lever 52, positioning the spring seat 45, and then adjusting the control switch 9, the motor 8 is running, the output shaft of the motor 8 drives the worm 7 to rotate, the worm 7 drives the drive shaft 3 to rotate through the worm gear 6, and the drive shaft 3 drives the groove shaft 42 to rotate, the steel ball 43 is in the groove at the left end of the groove shaft 42 and the inside of the pressing sleeve 44, and at the same time, the pressing sleeve 44 presses the steel ball 43 into the groove at the right end of the flange seat 41 under the action of the spring 46, and then the groove shaft 42 will drive the flange seat 41 and the traction drum 2 to rotate through the steel ball 43, and at the same time, the construction personnel tighten the end of the traction rope, and the traction rope is in the traction drum 2 The middle part is tightened, and the traction rope is wound with the rotation of the traction drum 2 to achieve traction of the overhead power transmission cable. When the overhead power transmission cable or the traction rope is stuck, the required traction force will increase sharply. At this time, the rotation resistance of the pressing sleeve 41 increases, and the steel ball 43 will not be able to move the flange seat 41 to rotate. The flange seat 41 exerts a rightward force on the steel ball 43 that is greater than the pressure of the spring 46, and then the steel ball 43 will slide relative to the flange seat 41 and move out of the groove of the flange seat 41. The flange seat 41 slips and the traction drum 2 stops rotating, thereby avoiding breaking the traction rope. The operator promptly controls the motor 8 to stop running, finds the resistance position, and then continues the traction work after the resistance is resolved. After traction is in place, the overhead power transmission cable can be fixed.

[0021] It is worth noting that the motor 8 disclosed in the above embodiment can be freely configured according to the actual application scenario. The motor 8 can select a three-phase asynchronous motor with model Y132S1-4, and the control switch 9 is provided with a switch button corresponding to the motor 8 for controlling its switching operation.

[0022] 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 overhead power transmission cable traction device, characterized in that: It comprises a frame (1), a torque limiting unit (4) and an adjustment unit (5); Frame (1): The right side of the upper end thereof is rotatably connected to a driving shaft (3), and the middle part of the frame (1) is rotatably connected to a traction cylinder (2); A torque limiting unit (4): comprising a flange seat (41), a grooved shaft (42), steel balls (43), a compression sleeve (44), a spring seat (45) and a spring 1 (46), wherein the flange seat (41) is arranged at the right end of the traction cylinder (2), the grooved shaft (42) is arranged at the left end of the driving shaft (3), the left end of the outer arc surface of the grooved shaft (42) is movably sleeved with a compression sleeve (44), the interior of the compression sleeve (44) is provided with uniformly distributed steel balls (43), the right end of the flange seat (41) and the left end of the outer arc surface of the grooved shaft (42) are both provided with grooves corresponding to the steel balls (43), the right end of the outer arc surface of the grooved shaft (42) is movably sleeved with a spring seat (45) and a spring 1 (46), and the spring 1 (46) is located between the spring seat (45) and the compression sleeve (44); Adjustment unit (5): used to adjust the position of the spring seat (45).

2. An overhead power transmission cable traction device according to claim 1, characterized in that: The torque limiting unit (4) further comprises a retaining ring (47), wherein the retaining ring (47) is arranged at the right end of the outer arc surface of the groove shaft (42), and the retaining ring (47) is located on the right side of the spring seat (45).

3. The overhead power transmission cable traction device according to claim 1, characterized in that: The adjustment unit (5) comprises a support shaft (51), a lever (52), an adjustment seat (53) and a slide post (54); the support shaft (51) is arranged at the upper end of the frame (1); the outer arc surface of the support shaft (51) is rotatably connected to the lever (52); a slide post (54) is arranged at the rear end of the lever (52); the left end of the adjustment seat (53) is rotatably connected to the spring seat (45); the right end of the adjustment seat (53) is slidably connected to the frame (1); and a long slide hole at the upper right end of the adjustment seat (53) is slidably connected to the slide post (54).

4. An overhead power transmission cable traction device according to claim 3, characterized in that: The adjustment unit (5) further comprises a clamping seat (55) and a positioning shaft (56); the clamping seat (55) is slidably connected to the middle part of the lever (52); the upper surface of the frame (1) is provided with evenly distributed positioning shafts (56); the clamping seat (55) is movably clamped with the longitudinally corresponding positioning shafts (56).

5. An overhead power transmission cable traction device according to claim 4, characterized in that: The front end of the lever (52) is slidably connected to a handle (11), the rear end of the handle (11) is fixedly connected to a clamping seat (55), a second spring (13) is installed inside the handle (11), a positioning block (12) is provided at the front end of the handle (11), and the second spring (13) is located between the clamping seat (55) and the positioning block (12).

6. The overhead power transmission cable traction device according to claim 1, characterized in that: A worm wheel (6) is provided at the middle of the outer arc surface of the driving shaft (3); a worm (7) is rotatably connected to the middle of the frame (1); the worm wheel (6) is meshingly connected to the worm (7); a motor (8) is provided at the rear end of the frame (1); an output shaft of the motor (8) is fixedly connected to the rear end of the worm (7); a control switch (9) is provided at the front end of the frame (1); an input end of the motor (8) is electrically connected to an output end of the control switch (9); and an input end of the control switch (9) is electrically connected to an external power supply.

7. The overhead power transmission cable traction device according to claim 1, characterized in that: The left end of the frame (1) is rotatably connected to two support arms (10), and the upper ends of the two support arms (10) are fixedly connected to the shaft sleeve at the left end of the traction cylinder (2).

8. A method for using an overhead power transmission cable traction device, characterized in that: An overhead power transmission cable traction device according to any one of claims 1 to 7 is used, comprising the following steps: (S1: Preparation: Anchor the frame (1) on the ground, loosen the support arm (10), wrap the traction rope of the overhead power transmission cable around the traction drum (2) for more than five turns, and then fix the support arm (10) to support the left end of the traction drum (2); (S2: adjusting the output torque: pulling the handle (11) forward, the handle (11) drives the clamping seat (55) to move forward along the lever (52) and separate from the positioning shaft (56), the handle (11) drives the lever (52) to rotate around the support shaft (51), the rear end of the lever (52) drives the spring seat (45) to move through the sliding column (54) and the adjustment seat (53), and the compression degree of the spring one (46) is adjusted. The compression degree of the spring one (46) is adjusted according to the diameter and material of the traction rope, and the clamping seat (55) is engaged with the positioning shaft (56) to position the spring seat (45); (S3: performing traction: the motor (8) is running, the output shaft of the motor (8) drives the driving shaft (3) to rotate through the worm (7) and the worm wheel (6), the driving shaft (3) drives the traction drum (2) to rotate through the grooved shaft (42), the steel ball (43) and the flange seat (41), and the traction drum (2) winds the traction rope to achieve traction of the overhead power transmission cable; (S4: Work completed: the motor (8) stops working and the overhead transmission cable is fixed to the tower.

9. The method for using the overhead power transmission cable traction device according to claim 8, characterized in that: When the overhead power transmission cable or the traction rope is blocked during traction, the flange seat (41) slips, the traction drum (2) stops rotating, the traction of the traction rope stops to avoid breaking, the motor (8) stops working, and traction continues after the resistance is eliminated.

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