Transmission line strand repair system and method

Abstract

The application relates to a power transmission line broken strand repairing system, which comprises a walking mechanism, a reset device, a clamp device and a pre-stranding wire winding mechanism, the walking mechanism is used for moving on the ground wire to be repaired; the reset device is used for re-winding the fallen broken wire on the ground wire to reset; the clamp device is used for installing a clamp on the reset broken wire breakpoint; the pre-stranding wire winding mechanism is used for winding the pre-stranding wire on the outer periphery of the clamp and within the length range of 30-50 cm on both sides; the reset device, the clamp device and the pre-stranding wire winding mechanism are selectively installed on the walking mechanism. The application has the advantages of simple structure, accurate pressing of the broken strand into the original position, good reset effect, fixing of the broken point through the clamp after the reset of the broken strand, no loose of the reset broken strand, uniform attachment of the pre-stranding wire on the outer periphery of the broken strand part of the ground wire, increase of the strength of the broken strand part, bearing of larger tension by the ground wire, protection and reinforcement of the reset broken strand part, no danger of the broken strand, and complete elimination of the safety hidden danger.

Description

Technical Field

[0001] This invention belongs to the field of power engineering technology, specifically relating to a transmission line strand breakage repair system and a transmission line strand breakage repair method. Background Technology

[0002] High-voltage transmission lines are long and located in open fields. Due to the influence of geographical conditions, overhead ground wires often break due to strong winds, lightning, icing, corrosion, and other reasons during operation. If the broken strands are not dealt with in time, they will further disperse under the action of tension and torque. The broken strands at the break point will droop to both sides. The drooping broken strands approach or even cross the insulation safety distance or directly connect to the conductor, causing the conductor to short-circuit and trip, resulting in a safety accident. Existing ground wire strand breakage repair methods typically involve manually winding the drooping strands back into place. This requires working at height, is physically demanding, and poses certain safety risks. Furthermore, even after repositioning, the broken strands may still detach from the break point due to ground wire tension, strong winds, lightning strikes, or other factors, resulting in incomplete and ineffective repairs. Additionally, because this method doesn't actually restore the connection of broken strands, it affects the overall strength of the ground wire, reducing its tensile strength and potentially leading to further breakage at the break point, thus preserving safety hazards. Summary of the Invention

[0003] This invention relates to a system and method for repairing broken strands in power transmission lines, which can at least solve some of the defects of the prior art.

[0004] This invention relates to a transmission line strand breakage repair system, comprising a traveling mechanism, a resetter, a clamp, and a pre-twisted wire winding mechanism.

[0005] The walking mechanism is used to move along the ground line to be repaired;

[0006] The resetter is used to rewind the fallen broken wire back onto the ground wire and reset it.

[0007] The clamp is used to fix the broken wire at the reset point;

[0008] The pre-twisted wire winding mechanism is used to wind pre-twisted wire within a length of 30 to 50 centimeters on the outer periphery and both sides of the clamp at the broken wire point on the ground wire.

[0009] The resetter, the clamp, and the pre-twisted wire winding mechanism are selectively installed on the traveling mechanism.

[0010] As one embodiment, the pre-twisted wire winding mechanism includes a longitudinal beam, a pulley, a first winding device, a second winding device, and a lifter; the pulley is mounted on the longitudinal beam, and the wire groove on the rim of the pulley is adapted to be held downwards on the ground wire; the upper end of the lifter is connected to the longitudinal beam and is used to lift the first winding device and the second winding device so that the first winding device and the second winding device are held on the ground wire; the first winding device and the second winding device are arranged opposite to each other on both sides of the ground wire breakage fixing point, and are used to wind the pre-twisted wire around the outer periphery of the ground wire, and the winding mandrels on the first winding device and the second winding device rotate in opposite directions.

[0011] As one embodiment, both the first winding device and the second winding device include a front support plate, a rear support plate, a winding mandrel, a winding motor, and a gear set. The front support plate and the rear support plate are fixedly connected, and the winding mandrel and the gear set are disposed between the front support plate and the rear support plate. The winding motor is mounted on the front support plate and is used to drive the first stage gear of the gear set to rotate. The last stage gear of the gear set is used to drive the winding mandrel to rotate. The winding mandrel is used to hold the ground wire and wind the pre-twisted wire onto the ground wire.

[0012] As one embodiment, the central hole of the winding core mold serves as a through hole for clamping the ground wire. Several guide holes are evenly distributed around the through hole on the side wall of the winding core mold. The guide holes are used for guiding the pre-twisted wire winding. V-shaped openings for the ground wire to pass through are respectively provided on the upper part of the front support plate and the rear support plate, on the circumference of the final gear and the winding core mold.

[0013] As one embodiment, the walking mechanism includes a bracket, a walking wheel, a tensioning wheel, and an electric lifting push rod; the walking wheel is mounted on the bracket, and the groove on the rim of the walking wheel is held downwards on the ground wire; the tensioning wheel is mounted on the electric lifting push rod; the electric lifting push rod is fixed to the bracket and is used to push the tensioning wheel upwards so that the groove on the rim of the tensioning wheel is held upwards on the ground wire.

[0014] As one embodiment, the resetter includes a wire twisting mechanism for winding the broken wire onto a ground wire, a drive shaft for driving the wire twisting mechanism to rotate, a gear mechanism for providing rotational driving force to the drive shaft, and an electrical bridge for supplying power to the wire twisting mechanism. The wire twisting mechanism and the gear mechanism are arranged opposite to each other, and the electrical bridge is located between the wire twisting mechanism and the gear mechanism.

[0015] As one embodiment, the wire twisting mechanism includes a clamping body, which is a ring structure. The ring structure has a central hole through which the ground wire passes, and the ring body of the ring structure has a plurality of wire-threading holes through which broken wires of the ground wire pass, and each of the wire-threading holes is arranged around the central hole.

[0016] As one embodiment, the bridge includes an insulating and fixed conductive ring on the drive shaft and an electrode that slides in contact with the conductive ring. The conductive ring is coaxially arranged with the drive shaft, the electrode has a power input terminal, and the conductive ring is electrically connected to the twisting mechanism.

[0017] As one embodiment, the clamp includes a front support plate, a rear support plate, a left push rod, and a right push rod. The upper parts of the left and right push rods are respectively hinged to the front and rear support plates via hinge shafts. The upper end of the left push rod is provided with a left jaw, and the upper end of the right push rod is provided with a right jaw. The left and right jaws are combined to form a cylindrical jaw. The jaw size of the cylindrical jaw is adapted to the size of the ground wire break point clamp. The left and right push rods are driven to open and close the cylindrical jaw, thereby fixing the clamp to the broken wire break point.

[0018] This invention also relates to a method for repairing broken strands in transmission lines, implemented based on the aforementioned transmission line broken strand repair system, the method comprising:

[0019] Step 1: Observe the location of the broken wire after the ground wire breaks, install the resetter onto the walking mechanism to form a first assembly, and use a drone to place the first assembly on the ground wire on one side of the broken wire breakage point. Use the resetter to rewrap the broken wire hanging down on one side onto the ground wire to reset it.

[0020] Step 2: Remove the first assembly from the ground wire using a drone, turn it around and place it back on the ground wire on the other side of the broken wire break point. Use the resetter to rewrap the broken wire hanging down on the other side back onto the ground wire.

[0021] Step 3: Install the clamp onto the walking mechanism to form a second assembly. Place the second assembly on the ground wire using a drone. Then, use the clamp to fix the assembly at the broken wire point after resetting.

[0022] Step 4: Install the pre-twisted wire winding mechanism onto the walking mechanism to form a third assembly. The pre-twisted wire is pre-loaded into the winding mandrels of the first and second winders. The third assembly is placed on the ground wire by a drone. The walking mechanism moves so that the first and second winders are located on both sides of the clamp. The pre-twisted wire is wound by the pre-twisted wire winding mechanism within a length of 30 to 50 centimeters on the outer periphery and both sides of the clamp to complete the repair of the broken strands of the ground wire.

[0023] The present invention has at least the following beneficial effects:

[0024] The transmission line strand breakage repair system provided by this invention has a simple structure and a high degree of automation. It can accurately press the broken strands back into their original positions, resulting in a good reset effect. After the broken strands of the ground wire are reset, the break point is fixed by clamps, preventing the broken strands from loosening again. The pre-twisted wires are evenly attached to the outer periphery of the broken strand, increasing the strength of the broken strand and enabling the ground wire to withstand greater tension. The reset broken strand is protected and reinforced, preventing the broken strands from falling off again and completely eliminating safety hazards. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is the front view of the traveling mechanism;

[0027] Figure 2 This is the right view of the traveling mechanism;

[0028] Figure 3 A three-dimensional structural diagram of the walking mechanism after the housing has been removed;

[0029] Figure 4 This is a schematic diagram of the working state structure of the resetter.

[0030] Figure 5 This is the front view of the resetter;

[0031] Figure 6 Left view of the resetter;

[0032] Figure 7 A 3D view of the reset device;

[0033] Figure 8 This is a three-dimensional structural diagram of the wire twisting mechanism;

[0034] Figure 9 A three-dimensional structural diagram of the wire twisting mechanism after removing the front connecting plate;

[0035] Figure 10 A three-dimensional structural diagram of the twisting mechanism after removing the front outer connecting plate and the front inner connecting plate;

[0036] Figure 11 A schematic diagram of the planar structure of the bridge and gear mechanism assembly;

[0037] Figure 12 A three-dimensional structural diagram of the bridge and gear mechanism assembly;

[0038] Figure 13 A schematic diagram of the gear mechanism after removing the front upright plate;

[0039] Figure 14 This is a schematic diagram of the internal structure of the gear mechanism;

[0040] Figure 15 This is a schematic diagram of the working structure of the clamp;

[0041] Figure 16 This is a schematic diagram of the clamp device structure;

[0042] Figure 17 Schematic diagram of the structure after removing the front bracket of the clamp;

[0043] Figure 18 This is a schematic diagram of the three-dimensional structure of the clamp;

[0044] Figure 19 A schematic diagram of the working state of the pre-twisted wire winding mechanism;

[0045] Figure 20 This is a schematic diagram of the three-dimensional structure of the pre-twisted wire winding mechanism;

[0046] Figure 21 A three-dimensional structural diagram of the pre-twisted wire winding mechanism, pre-twisted wire, and grounding wire assembly;

[0047] Figure 22 A three-dimensional structural diagram of the combination of the first winding device and the second winding device;

[0048] Figure 23 This is a schematic diagram of the three-dimensional structure of the first winding device;

[0049] Figure 24 A schematic diagram of the three-dimensional structure of the first winding machine after the support plate has been removed;

[0050] Figure 25 This is a schematic diagram of the three-dimensional structure of the third-stage gear;

[0051] Figure 26 This is a schematic diagram of the three-dimensional structure of the winding mandrel. Detailed Implementation

[0052] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] like Figure 1This invention provides a transmission line broken strand repair system, including a traveling mechanism 2, a resetter 6, a clamp 8, and a pre-twisted wire winding mechanism 1. The traveling mechanism 2 is used to move the resetter 6, the clamp 8, and the pre-twisted wire winding mechanism 1 to a designated working position on the ground wire 3 to be repaired. The resetter 6 is used to rewind the drooping broken wire onto the ground wire 3. The clamp 8 is used to install a clamp 12 at the broken point of the reset broken wire for fixation. The pre-twisted wire winding mechanism 1 is used to form a broken wire fixing point 11 after reset and the clamp 12 is installed at the broken point. Pre-twisted wire 9 is wound within a length of 30 to 50 centimeters on the outer periphery and both sides of the clamp 12 at the broken point on the ground wire 3. The resetter 6, the clamp 8, and the pre-twisted wire winding mechanism 1 are selectively installed on the traveling mechanism 2.

[0054] The walking mechanism 2 travels on the ground wire 3 that needs to be repaired via its walking wheels 201, such as... Figures 1-3 As shown, the walking mechanism 2 includes two walking wheels 201 connected to both ends of the support, a tension wheel 202 connected to the bottom of the support, a housing 203, a walking motor 204, a reducer 205, an electric lifting push rod 208, a power supply, and a controller. The left support 207 and the right support 206 are fixedly connected to form the support. The tension wheel 202 is connected to the upper end of the telescopic rod of the electric lifting push rod 208. The lower cylinder of the electric lifting push rod 208 is fixedly connected to the lower part of the support via a connecting plate. The walking motor 204 and the reducer 205 are fixedly mounted on the support. The walking motor 204 is reduced in speed by the reducer 205 and then... One of the walking wheels 201 is connected, driving the walking wheel 201 to rotate; the two walking wheels 201 are held downward on the ground wire 3 through the grooves on their rims; the electric lifting push rod 208 pushes the tension wheel 202 upward, so that the grooves on the rim of the tension wheel 202 are held upward on the ground wire 3; the housing 203 is fixed on the bracket and covers the electric lifting push rod 208, power supply, and controller. The power supply provides power to the walking motor 204, electric lifting push rod 208, resetter 6, clamp 8 and pre-twisted wire winding mechanism 1. The controller is used to control the movement of the walking mechanism 2, resetter 6 and clamp 8. A C-shaped opening is provided on one side of the housing 203; a guide rod 209 is provided on the bracket of the walking mechanism 2 at the part where the axle of the walking wheel 201 is connected. When the walking mechanism 2 is suspended on the ground wire 3, the guide rod 209 slides along the ground wire 3 to guide the ground wire 3 into the groove on the rim of the walking wheel 201; the C-shaped opening serves as a passage for the ground wire 3, holding the ground wire 3 in the groove on the rim of the walking wheel 201 and the tension wheel 202; the guide rod 209 extends from the C-shaped opening on the housing 203.

[0055] like Figures 4-7 , Figures 11-14As shown, the resetter 6 includes a gear mechanism 601, an electric bridge 602, and a wire-winding mechanism 603. The gear mechanism 601 includes a motor 6011, a front plate 6013, a rear plate 6012, a gear set, and a drive shaft 6038. The front plate 6013 and the rear plate 6012 are fixedly connected opposite each other. The gear set includes a first-stage gear 6014, a second-stage gear 6015, and a third-stage gear 6016 that mesh sequentially. The gears of the gear set are located between the front plate 6013 and the rear plate 6012. The motor 6011 is installed on the outside of the rear plate 6012 to drive the gear set. The first-stage gear 6014 rotates, thereby sequentially driving the second-stage gear 6015 and the third-stage gear 6016 to rotate. The third-stage gear 6016 is a hollow ring gear. A drive shaft 6038 with a central through hole is fixed to the side wall of the third-stage gear 6016 and extends out of the front upright plate 6013. The central through hole of the drive shaft 6038 is used to hold the ground wire 3. This central through hole is coaxial with the third-stage gear 6016. Below the front upright plate 6013 and the rear upright plate 6012, on the circumference of the third-stage gear 6016 and the drive shaft 6038, a through hole extending to the central through hole of the drive shaft is provided. The ground wire 3 is held in place by the U-shaped opening, which is located in the center hole of the transmission shaft 6038 and the center hole of the third-stage gear 6018. There are two second-stage gears 6015, each of which can rotate freely on its central axis. The two ends of its central axis are supported on the front upright plate 6013 and the rear upright plate 6012. Each second-stage gear 6015 is rotatably connected between the front upright plate 6013 and the rear upright plate 6012 via its respective central axis. The first-stage gear 6014 drives the third-stage gear 6016 simultaneously via the two second-stage gears 6015, thereby enabling the U-shaped opening... The three-stage gear 6016 can operate continuously. Protruding support rings are provided on the annular sidewalls on both sides of the three-stage gear 6016. Limiting ring grooves adapted to the support rings are provided on the opposite sidewalls of the front plate 6013 and the rear plate 6012 at the positions where they contact the three-stage gear 6016. The support rings are placed in the limiting grooves, and the bottom surfaces of the limiting grooves on both sides form an axial clamping force on the corresponding support rings. The circumference of the limiting grooves radially limits the support rings. The three-stage gear 6016 forms a rotational engagement with the front plate 6013 and the rear plate 6012 through the support rings on both sides.

[0056] like Figures 8-10As shown, the wire twisting mechanism 603 includes an electric push rod 6031, two opposing and fixedly connected outer connecting plates 6032, two opposing and fixedly connected inner connecting plates 6033, and a clamping body 6037. Both the outer connecting plates 6032 and the inner connecting plates 6033 are annular rings with U-shaped openings at the bottom, and lugs are provided on the outer circumference of the annulus. The telescopic end of the electric push rod 6031 is hinged to the lugs of the two inner connecting plates 6033, and the cylinder end of the electric push rod 6031 is hinged to the lugs of the two outer connecting plates 6032. The clamping body 6037 is a ring structure composed of three sector-shaped blocks. The central hole is used to clamp the ground wire 3; a guide post 6035 is inserted into the side wall of each sector block, and the guide post 6035 extends from both side walls of the sector block; three inner connecting plate guide grooves 6036 are provided on the annular side wall of the inner connecting plate 6033, and three outer connecting plate guide grooves 6034 are provided on the annular side wall of the outer connecting plate 6032; the clamping body 6037 is placed between two inner connecting plates 6033, and the two inner connecting plates 6033 are placed between two outer connecting plates 6032; the three guide posts 6035 extending from both sides of the three sector blocks of the clamping body 6037 are respectively placed on the three inner connecting plate guide grooves on both sides. The guide grooves 6036 and 6034 of the two outer connecting plates are located within the groove; a V-shaped opening is provided on the outer circumference of the connection between the two sector blocks of the clamping body 6037; one end of the drive shaft 6038 is fixedly connected to the outside of the outer connecting plate 6032, the central through hole of the drive shaft 6038 is coaxial with the central hole of the clamping body 6037, and the direction of the U-shaped opening of the drive shaft 6038, the direction of the V-shaped opening on the outer circumference of the sector block, and the direction of the U-shaped opening of the outer connecting plate 6032 and the inner connecting plate 6033 are consistent. When it is necessary to clamp the ground wire 3, the telescopic rod of the electric push rod 6031 controls the extension and retraction of the outer connecting plate 6032. 32 and the inner connecting plate 6033 rotate relative to each other around the axis of the central hole. The three guide posts 6035 slide in the guide grooves 6034 and 6036 of the outer connecting plate, respectively, thereby driving the three sector blocks of the clamping body 6037 to move relative to each other. The V-shaped opening of the clamping body 6037 opens and connects with the central hole. The ground wire 3 is guided through the V-shaped opening and is inserted into the central hole of the clamping body through the U-shaped opening. Then, the telescopic rod of the electric push rod 6031 extends and retracts in the opposite direction. The three sector blocks of the clamping body 6037 close to form a closed hole and completely clamp the ground wire 3 around the central hole.

[0057] like Figure 5 , Figures 11-12As shown, the bridge 602 includes two conductive rings 6021 and two corresponding inverted V-shaped electrodes 6022. The two conductive rings 6021 are fixed parallel to each other on the outer circumference of the drive shaft 6038. An insulating layer is provided on the contact surface between the outer circumference of the drive shaft 6038 and the conductive rings 6021. Each conductive ring 6021 has an opening corresponding to the U-shaped opening of the drive shaft 6038 for the ground wire 3 to enter the central through hole of the drive shaft 6038. The opening width of the inverted V-shaped electrode 6022 is greater than the opening width on the outer circumference of the conductive ring 6021, so that the inverted V-shaped electrode 6022 can straddle the outer circumference of the conductive ring 6021. When the drive shaft 6038 rotates, the inverted V-shaped electrode 6022... The two ends of the open end slide on the outer circumference of the conductive ring 6021, and the inverted V-shaped electrode 6022 can always maintain at least one end of the open end in contact with the outer circumference of the conductive ring 6021; the two lower ends of one inverted V-shaped electrode 6022 are dynamically pressed on the outer circumference of one conductive ring 6021 as positive contacts, and the two lower ends of the other inverted V-shaped electrode 6022 are dynamically pressed on the outer circumference of another conductive ring 6021 as negative contacts. The upper parts of the two inverted V-shaped electrodes 6022 are respectively connected to the insulating post fixed on the front plate 6013, and are respectively connected to the power control circuit of the resetter 6. The two conductive rings 6021 are respectively connected to the motor terminal of the electric push rod 6031 through wires.

[0058] A wire-passing hole is also provided on the sector block of the clamping body 6037. The broken wire of the broken ground wire 3 is passed through the wire-passing hole of the clamping body 6037 and clamped in the center hole of the clamping body 6037. The drive shaft 6038 of the gear mechanism rotates, which drives the wire-twisting mechanism 603 to rotate. The electric push rod 6031 of the wire-twisting mechanism 603 is continuously powered through the bridge 602. As the wire-twisting mechanism 603 rotates, the broken wire returns to its original position with the rotation of the clamping body 6037, thereby realizing the reset of the broken wire.

[0059] like Figures 16-18As shown, the clamp 8 includes a front support plate 801, a rear support plate 802, a right push rod 803, a left push rod 804, a left connecting rod 805, a right connecting rod 806, a crossbar 807, a lead screw 808, a base 809, and a lead screw lifting motor 810. The front support plate 801 and the rear support plate 802 are fixedly mounted on the base 809. The lead screw lifting motor 810 is fixedly connected to the lower part of the base 809, and the motor shaft is mechanically connected to the lower end of the lead screw 808. The threaded end of the lead screw 808 is threadedly connected to the nut in the middle of the crossbar 807. Both ends of the crossbar 807 are hinged to the lower ends of the left connecting rod 805 and the right connecting rod 806, respectively. The upper ends of the left connecting rod 805 and the right connecting rod 806 are hinged to the lower ends of the left push rod 804 and the right push rod 803, respectively. The upper parts of the left push rod 804 and the right push rod 803 are hinged to the front support plate 801 and the rear support plate 802, respectively, via hinge shafts. The upper ends of the left push rod 804 and the right push rod... The upper end of 803 is provided with a left jaw and a right jaw, which are combined to form a cylindrical jaw. The jaw size of the cylindrical jaw is adapted to the size of the ground wire 3 break point clamp. Guide blocks are provided on both sides of the crossbar 807 adjacent to the front support plate 801 and the rear support plate 802 along the direction of the screw nut axis. Guide grooves are provided at corresponding positions on the front support plate 801 and the rear support plate 802. The guide blocks are placed in the guide grooves on the adjacent front support plate 801 and the rear support plate 802. When the screw lifting motor 810 drives the screw 808 to move up and down, the guide blocks slide up and down in the corresponding guide grooves. The screw 808 drives the crossbar 807 to move up and down. The left connecting rod 805 and the right connecting rod 806 drive the jaws at the ends of the left push rod 804 and the right push rod 803 to open and close, thereby fixing the clamp 12 to the broken wire break point 11, thus fixing the reset broken wire and preventing the reset broken wire from loosening and falling again.

[0060] like Figures 19-22As shown, the pre-twisted wire winding mechanism 1 includes a longitudinal beam 105, two rollers 106 disposed at both ends of the longitudinal beam 105, a first winding device 101, a second winding device 102, a guide rail 107, a first winding motor 103, a second winding motor 104, two lifting devices 108, and two V-shaped guides 109. The rims of the rollers 106 are provided with grooves for holding the ground wire 3. The pre-twisted wire winding mechanism 1 is suspended on the ground wire 3 by the two rollers 106 and is held in place by the grooves on its rims, allowing it to move freely. The pre-twisted wire winding mechanism 1 also includes V-shaped guides. 109, the V-shaped guide 109 is used to accurately guide the ground wire 3 into the wire groove on the rim of the pulley 106 when the pre-twisted wire winding mechanism is suspended on the ground wire 3; the V-shaped guide 109 is composed of two guide rods set on the axle of the pulley 106. One end of the two guide rods is fixedly connected to the axle of the pulley 106 or the longitudinal beam 105, and the other end forms a V-shaped groove at a certain angle. The large end of the V-shaped groove opens towards the guide rail 107. The wire groove on the rim of the pulley 106 is located at the root of the V-shaped groove. The ground wire 3 can slide directly into the wire groove of the pulley 106 along the guide rod in the V-shaped groove.

[0061] The first winding device 101 and the second winding device 102 have the same structure, and each of them is provided with a guide block 1019 at its lower end. The shape of the guide block 1019 is adapted to the shape of the slide rail 107. The first winding device 101 and the second winding device 102 are movably connected to the slide rail 107 through the guide block 1019 at their respective lower ends. The first winding device 101 and the second winding device 102 slide freely on the guide rail 107 along the slide rail through the guide block 1019. Electric lifting devices 108 are respectively provided on the upper end. In this embodiment, the electric lifting devices 108 are electric hydraulic push rods. The cylinders at the lower ends of the two lifting devices 108 are respectively fixedly connected to the two ends of the guide rail 107 through connecting blocks 110. The guide rail 107 moves up and down below the longitudinal beam 105 along with the extension and retraction of the lifting devices 108 at both ends. The lifting devices 108 are used to lift the guide rail 107 so that the first winding device 101 and the second winding device 102 are clamped on the overhead ground wire 3 for strand repair.

[0062] like Figures 23-26As shown, both the first winding device 101 and the second winding device 102 include a front support plate 1011, a rear support plate 1012, a winding mandrel 1016, a winding motor, and a gear set. The front support plate 1011 and the rear support plate 1012 are fixedly connected, and the winding mandrel 1016 and the gear set are disposed between the front support plate 1011 and the rear support plate 1012. The gear set includes a first-stage gear 1015, a second-stage gear 1014, and a third-stage gear 1013 that mesh sequentially. The winding motor is mounted on the front support plate 1011 to drive the first-stage gear 1015 of the gear set to rotate, thereby sequentially driving the second-stage gear 1014 and the third-stage gear 1013. Rotation; the winding motor mounted on the first winding machine 101 is the first winding motor 103, and the winding motor mounted on the second winding machine 102 is the second winding motor 104. The first winding motor 103 is used to drive the gear set of the first winding machine 101 to rotate, and the second winding motor 104 is used to drive the gear set of the second winding machine 102 to rotate; the third-stage gear 1013 is a hollow ring gear (the tooth profile of the third-stage gear 1013 is not shown in the accompanying drawings to simplify the drawing and reduce excessive lines). The winding mandrel 1016 is set at the center of the ring of the third-stage gear 1013, and is fixedly connected to the side wall of the third-stage gear 1013 by screws and follows the ring. The gear rotates, and the winding mandrel 1016 is used to hold the ground wire 3 and wind the pre-twisted wire 4 onto the ground wire 3. At the center of the winding mandrel 1016 is a wire-passing hole, the diameter of which matches the diameter of the ground wire 3, used to clamp the ground wire 3. Several guide holes 1017 (three guide holes 1017 are shown in the figure) are evenly distributed around the wire-passing hole on the side wall of the winding mandrel 1016, guiding the pre-twisted wire 4 during winding. Above the front support plate 1011 and the rear support plate 1012, and on the circumference of the third-stage gear 1013 and the winding mandrel 1016, a V-shaped opening 1018 extending to the wire-passing hole is provided; the ground wire 3 passes through the V-shaped opening 1018. It enters and is held in the wire hole; because the V-shaped opening 1018 on the third gear 1013 causes the gear tooth profile to be incomplete, in order to maintain the continuity of gear transmission, a second gear is set and two second gears 1014 are set. The angle between the center of the first gear 1015 and the line connecting the centers of the two second gears 1014 is greater than the V-shaped opening angle of the V-shaped opening 1018; the first winding device 101 and the second winding device 102 are arranged opposite to each other on both sides of the ground wire broken wire fixing point 6. During operation, they slide from the ground wire broken wire fixing point 6 to both sides. The winding mandrel 1016 on the first winding device 101 and the second winding device 102 rotate in opposite directions.

[0063] The output shafts of the winding motors (first winding motor 103 and second winding motor 104) are positioned between the front support plate 1011 and the rear support plate 1012. A first-stage gear 1015 is connected to the output shaft of the winding motor, and two second-stage gears 1014 are rotatably connected between the front support plate 1011 and the rear support plate 1012 via their central shafts. Protruding support rings 10131 are respectively provided on the annular sidewalls on both sides of the third-stage gear 1013. On 012, limiting ring grooves adapted to support ring 10131 are respectively provided at the positions that contact the third stage gear 1013 on both sides. The support ring 10131 is placed in the corresponding limiting ring groove. The third stage gear 1013 forms a rotational engagement with the front support plate 1011 and the rear support plate 1012 through the support rings 10131 on both sides. That is, the third stage gear 1013 rotates under the drive of the second stage gear 1014. The support rings 10131 on both sides use the limiting ring grooves on both sides as rotational support and limiting, respectively.

[0064] To prevent excessive sway of the pre-twisted wire 9 during winding and contact with the longitudinal beam 105 or guide rail 107, causing motion interference, limit rings 10 are respectively provided on the first winder 101 and the second winder 102. The limit rings 10 are used for guiding and limiting the winding process of the pre-twisted wire 9. The root of the limit ring 10 of the first winder 101 is connected to the housing of the first winding motor 103, and the root of the limit ring 10 of the second winder 102 is connected to the housing of the second winding motor 104. When winding the pre-twisted wire 9, both ends of the pre-twisted wire 9 are placed in the upper ring of the limit rings 10 on both sides. An opening is provided at the top of the upper ring of the limit ring 10 so that when the lifter 108 lifts the two winders holding the ground wire 3 of the pre-twisted wire winding mechanism 1, the ground wire 3 can pass into the upper ring of the limit ring 10.

[0065] This embodiment also provides a method for repairing broken strands in transmission lines, which is implemented based on the above-mentioned transmission line broken strand repair system and includes the following steps:

[0066] Step 1: Observe the location of the broken wire after the ground wire breaks. The walking mechanism 2 and the resetter 6 are mechanically connected through the resetter connector 4 to form a first assembly. The two ends of the resetter connector 4 are fixedly connected to the housing 203 of the walking mechanism 2 and the rear upright plate 6012 of the resetter 6 by screws. The first assembly is placed on the ground wire 3 with broken strand to be repaired by the drone, so that the walking mechanism 2 is located at the front end of the resetter 6. The electric push rod of the wire twisting mechanism of the resetter 6 is activated to pass the broken wire through the central through hole of the clamping body 6037 of the resetter 6. Then, the walking mechanism 2 is controlled to walk to the rear end of the resetter 6 and stop at the root position of the broken strand, and the broken wire is passed into the wire passing hole of the clamping body 6037.

[0067] Step 2: Start the walking mechanism 2 and the resetter 6. While the resetter 6 moves with the walking mechanism towards the broken wire point, the twisting mechanism 603 rotates and the clamping body 6037 drives the drooping twisted wire to wind back to its original position along the ground wire, that is, the drooping broken wire is reset; the resetter 6 winds back the drooping twisted wire through its twisting mechanism 603.

[0068] Step 3: Use a drone to remove the first assembly from the ground wire, turn it around and place it on the other side of the broken wire point of the ground wire 3 to be repaired; reset the broken wire hanging down on the other side of the broken point in the same way; remove the first assembly, and the broken wire reset is complete;

[0069] Step 4: Mechanically connect the clamp 8 and the walking mechanism 2 to form the second assembly, as shown below. Figure 15 As shown, the two ends of the clamp connector 5 are fixedly connected to the housing 203 of the walking mechanism 2 and the base 809 of the clamp 8 by screws. The second assembly is placed on the ground wire 3 after the broken strand and wire have been reset by the drone. The walking mechanism 2 drives the clamp 8 to move on the ground wire 3 after the broken strand and wire have been reset to the broken wire break point, so that the jaws of the clamp 8 clamp upward and clamp on the broken wire break point. An open clamp is placed on the jaws of the clamp 8. The screw lifting motor 810 of the clamp 8 is started, so that the crossbar 807 of the clamp 8 moves upward and the jaws of the clamp 8 continuously close, thereby pressing the opening of the clamp 12 and fixing the clamp 12 on the broken wire break point. The second assembly is removed and the clamp installation process is completed.

[0070] Step 5: Mechanically connect the pre-twisted wire winding mechanism 1 and the traveling mechanism 2 through the winding device connector 7 to form a third assembly, such as... Figures 19-21 As shown, the pre-twisted wire 9 is pre-loaded into the guide hole 1017 of the winding mandrel 1016 of the first winder 101 and the second winder 102. The third assembly is placed on the ground wire 3 by a drone. The first winder 101 and the second winder 102 are gathered in the center of the guide rail 107. The walking mechanism 2 moves so that the first winder 101 and the second winder 102 are located on both sides of the clamp 12. The walking mechanism 2 stops moving. The lifting device 108 is activated to lift the guide rail 107. The center hole of the winding mandrel 1016 of the first winder 101 and the second winder 102 is held on the ground wire 3.

[0071] Step 6: Simultaneously start the winding motors of the first winding machine 101 and the second winding machine 102. The winding mandrels 1016 of the first winding machine 101 and the second winding machine 102 rotate in opposite directions. The pre-twisted wire 9 rotates with the winding mandrel 1016. The first winding machine 101 and the second winding machine 102 move simultaneously to both sides from the broken wire fixing point 11 and the clamp 12 position until all the pre-twisted wire 9 is wound on the ground wire 3. Remove the third assembly. The pre-twisted wire winding is complete.

[0072] Step 7: Ground wire breakage repair completed.

[0073] In actual use, a wireless communication module is installed on the walking mechanism 2. The wireless communication module is electrically connected to the controller and communicates wirelessly with the ground control computer. Cameras are also installed at appropriate positions on the longitudinal beam 105 of the pre-twisted wire winding mechanism 1 and on the walking mechanism 2 to observe the direction of the U-shaped opening on the winding mechanism, the position of the clamp jaws of the clamp 8, the position of the broken wire fixing point 6, and the position of the V-shaped opening 1018 on the winding mandrel 1016 of the first winder 101 and the second winder 102, so as to accurately control the working process of the walking mechanism 2, the pre-twisted wire winding mechanism 1, the clamp 8 and the resetter 6 on the ground.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A power line strand repair system, characterized by: The walking mechanism, the reset device, the clamp device and the pre-stranding device, The walking mechanism is used for moving on the ground wire to be repaired; The reset device is used for rewinding the fallen broken wire on the ground wire; The clamp device is used for installing a clamp on the reset broken wire; The pre-stranding device is used for winding the pre-stranding wire on the length range of 30-50 cm outside the periphery of the clamp and on both sides of the broken wire of the ground wire; The reset device, the clamp device and the pre-stranding device are selectively installed on the walking mechanism; The reset device comprises a stranding mechanism for winding the broken wire on the ground wire, a transmission shaft for driving the stranding mechanism to rotate, a gear mechanism for providing the transmission shaft with rotary driving force and an electric bridge for providing the stranding mechanism with power, the stranding mechanism and the gear mechanism are oppositely arranged, and the electric bridge is arranged between the stranding mechanism and the gear mechanism; The stranding mechanism comprises an electric push rod, two oppositely fixed and connected outer connecting plates, two oppositely fixed and connected inner connecting plates and a clamping body, the outer connecting plate and the inner connecting plate are both circular rings with U-shaped openings in lower parts, and lugs are arranged on outer peripheries of the circular rings; the telescopic end of the electric push rod is hinged to the lugs of the two inner connecting plates, and the cylinder end of the electric push rod is hinged to the lugs of the two outer connecting plates; the clamping body is a circular ring structure composed of three fan-shaped blocks, a central hole of the circular ring is used for clamping the ground wire; a guide column is penetrated into each side wall of the fan-shaped block, and the guide column extends from the two side walls of the fan-shaped block; three inner connecting plate guide grooves are arranged on the side wall of the circular ring of the inner connecting plate, three outer connecting plate guide grooves are arranged on the side wall of the circular ring of the outer connecting plate, the clamping body is arranged between the two inner connecting plates, the two inner connecting plates are arranged between the two outer connecting plates, and the three guide columns extending from the two side walls of the three fan-shaped blocks of the clamping body are arranged in the three inner connecting plate guide grooves and the two outer connecting plate guide grooves on the two sides respectively; A wire penetrating hole through which the broken wire of the ground wire falls is further arranged on the fan-shaped block of the clamping body, each wire penetrating hole is arranged around the central hole, the broken wire of the broken strand of the ground wire falls through the wire penetrating hole of the clamping body, the ground wire is clamped in the central hole of the clamping body, and the fallen broken wire is restored to the original position along with the rotation of the clamping body along with the rotation of the stranding mechanism, so that the broken wire is reset.

2. The power line strand repair system of claim 1, wherein: The pre-stranding device comprises a longitudinal beam, a hanging wheel, a first winding device, a second winding device and a lifting device; the hanging wheel is installed on the longitudinal beam, and a wire groove on a wheel rim of the hanging wheel is adapted to be clamped downward on the ground wire; the lifting device is connected to the longitudinal beam at an upper end, and is used for lifting the first winding device and the second winding device to enable the first winding device and the second winding device to be clamped on the ground wire; the first winding device and the second winding device are oppositely arranged on both sides of the broken wire fixing point of the ground wire, and are used for winding the pre-stranding wire on the periphery of the ground wire; and the rotation directions of winding cores of the first winding device and the second winding device are opposite.

3. The power line strand repair system of claim 2, wherein: The first and second winding devices each comprise a front support plate, a rear support plate, a winding core, a winding motor and a gear set, the front support plate and the rear support plate are fixedly connected, the winding core and the gear set are arranged between the front support plate and the rear support plate; the winding motor is installed on the front support plate and used to drive the first-stage gear of the gear set to rotate; the last-stage gear of the gear set is used to drive the winding core to rotate; the winding core is used to hold the ground wire and wind the pre-stranded wire on the ground wire.

4. The power line strand repair system of claim 3, wherein: The central hole of the winding core serves as a wire passing hole for clamping the ground wire, and a plurality of wire guide holes are uniformly distributed around the wire passing hole on the side wall of the winding core, the wire guide holes are used for pre-stranded wire winding guidance; V-shaped openings for the ground wire to pass through are respectively arranged on the upper portions of the front support plate and the rear support plate and on the circumferences of the last-stage gear and the winding core.

5. The power line strand repair system of claim 1, wherein: The walking mechanism comprises a support, a walking wheel, a tensioning wheel and an electric lifting push rod; the walking wheel is installed on the support, and the wire groove on the rim of the walking wheel holds the ground wire downward; the tensioning wheel is installed on the electric lifting push rod; the electric lifting push rod is fixed on the support and used to push the tensioning wheel upward so that the wire groove on the rim of the tensioning wheel holds the ground wire upward.

6. The power line strand repair system of claim 1, wherein: The electric bridge comprises an electrically conductive ring fixedly arranged on the transmission shaft and insulated and an electrode slidingly contacting the electrically conductive ring, the electrically conductive ring is coaxially arranged with the transmission shaft, the electrode has a power supply access end, and the electrically conductive ring is electrically connected with the stranding mechanism.

7. The power line strand repair system of claim 1, wherein: The clamp device comprises a front support plate, a rear support plate, a left top rod and a right top rod, the upper portions of the left top rod and the right top rod are hingedly connected to the front support plate and the rear support plate through hinge shafts, the upper end of the left top rod is provided with a left jaw, and the upper end of the right top rod is provided with a right jaw, the left jaw and the right jaw are combined into a cylindrical jaw, the jaw size of the cylindrical jaw is adapted to the size of the clamp for the ground wire break point, and the left top rod and the right top rod are used to be driven to drive the cylindrical jaw to open and close, so as to fix the clamp on the broken wire break point.

8. A method of repairing a broken strand of a power transmission line, the method comprising: The power transmission line breakage repairing system based on any one of claims 1-7 is implemented, and the method comprises: Step 1: observing the position of the broken wire after the ground wire breakage, installing the reset device on the walking mechanism to form a first combination, placing the first combination on the ground wire on one side of the broken wire break point by using a drone, and resetting the fallen broken wire on the ground wire by using the reset device; Step 2: taking off the first combination from the ground wire by using the drone, turning the direction to place the first combination on the ground wire on the other side of the broken wire break point, and resetting the fallen broken wire on the ground wire by using the reset device; Step 3: installing the clamp device on the walking mechanism to form a second combination, placing the second combination on the ground wire by using the drone, and fixing the clamp on the reset broken wire break point by using the clamp device. Step 4, the pre-stranded wire winding mechanism is installed on the walking mechanism to form a third assembly, the pre-stranded wire is previously loaded into the winding core mold of the first winding device and the second winding device, the third assembly is placed on the ground wire by the unmanned aerial vehicle, and the walking mechanism moves so that the first winding device and the second winding device are located on the two sides of the clamp; the pre-stranded wire is wound on the outer periphery of the clamp and within a length range of 30 to 50 cm on the two sides of the clamp through the pre-stranded wire winding mechanism, and the ground wire breakage repair is completed.

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