Overhead line maintenance operation method combining lifting device and transverse walking device

Abstract

The invention relates to the technical field of overhead line maintenance operation, and provides an overhead line maintenance operation method combining a lifting device and a transverse walking device. Operation is carried out on a wire only by matching with an unmanned aerial vehicle, and a ground operator operates the unmanned aerial vehicle and puts in a traction rope; a ground operator fastens a static rope for the lifting device and a personal anti-falling backup protection rope on the transverse walking device, hangs the transverse walking device on a wire by using a traction rope, then installs the lifting device, fastens a safety belt by an equipotential operator, sits on the lifting device, and then lifts the lifting device on the ground. A worker can reach an on-line position by operating the device, and then enters a defect position of a live line to carry out work by using the transverse walking device, so that the application range of the lifting device is expanded, accurate positioning can also be realized in maintenance operation in a large-span span area, the requirement of the worker for carrying physical intensive equipment such as a rope ladder is reduced, and the working efficiency is improved. And the physical burden of workers during high-altitude operation is relieved.

Description

Technical Field

[0001] The invention relates to the technical field of overhead line maintenance operations, in particular to an overhead line maintenance operation method combining a lifting device with a lateral walking device. Background Art

[0002] At present, in the process of overhead lines, replacement of spacers, replacement of shock-absorbing hammers, repairing conductors, etc., workers often need to climb onto poles and ground wires to perform high-altitude operations. The average height of high-voltage transmission line towers is basically above 20 meters. The company requires that workers must abide by various safety regulations during high-altitude maintenance, such as not losing the protection of safety belts when climbing poles and towers. This also adds the burden of extra physical exertion to workers when climbing, and brings certain safety risks.

[0003] When entering the electric field, climbing soft ladders, riding hanging rails, along insulator strings, and along horizontal ladders have always been used. These methods have their own advantages and disadvantages in actual application: Enter the electric field along the insulated soft ladder, which is suitable for live operations on 110kV and above transmission lines, and can be used on both straight and tension towers. Features: Simple and easy to learn, but it depends on the operator's own climbing, has high requirements on the operator's physical fitness, and has high labor intensity; Enter the electric field by sitting on the hanging rail. This method is applicable to the straight towers of 500kV and above lines. Features: 1. When installing the hanging rail, at least 2 people are required to complete it, and the position of the hanging point on the control rope should be selected reasonably. 2. The equipotential electrician needs to go up to the tower to sit on the hanging rail, and at least 2 people need to cooperate with each other to put the operator down. 3. When the equipotential electrician enters the electric field on the hanging rail, the body should be curled up in the ladder (basket) as much as possible to reduce the effective safety distance occupied by the human body in the electric field. 4. When entering the electric field by the hanging ladder method, the person must not lose the protection of the backup protection rope behind him, and the hanging point on the backup protection rope should be reasonably selected according to the actual situation; Enter the electric field along the insulator string. This method is generally applicable to 220kV and above lines. However, in actual operation, the number of good insulators and the combined gap of the 220kV line should be fully considered to determine whether to use this method. Features: simple and easy to learn, without the help of other external climbing tools; Enter the electric field along the horizontal ladder. This method is suitable for entering the electric field through straight lines and tension towers of 110kV and above lines. It is especially suitable for 110-220kV lines (partial tower types of 500kV can be used as a reference). Features: stable entry potential, but difficult to transport and install; The State Grid Corporation of China's Gansu Electric Power Company Maintenance Company has developed a combined live-line working method for transmission lines using drones and electric lifting devices. The principle of the operation is to first use a drone to hang a traction rope on the conductor of the working phase, and the ground workers use the traction rope to bring the semi-static rope used by the lifting device over the conductor. The ground workers install the lifting device on the semi-static rope, and the equipotential workers fasten their full-body safety belts, and the whole body is suspended under the lifting device (the workers are in a suspended state during the entire process of rising and falling). Carry an insulating soft ladder, operate the lifting device to move up and down to the vicinity of the conductor, and hang the hard insulating ladder head on the conductor after transferring the potential. The equipotential workers can then climb up the hard ladder head to the conductor to carry out the corresponding work; the physical energy consumption of the equipotential workers is large, the skill requirements for the equipotential workers are high, and the workers cannot move on the conductor, and the limitations are high. With regard to the current personnel quality of the live-line working team of the transmission line, it is difficult for 1 / 3 of the personnel to complete the work with this method, so it has not been promoted and applied in the system of the Southern Power Grid Company, and when the workers are working.

[0004] In view of the many limitations of traditional working methods, a new aerial work solution is urgently needed to improve the convenience and safety of operators, maximize the advantages of aerial lifting devices, optimize the maintenance process, and improve the overall work effect. Summary of the invention

[0005] One object of the present invention is to provide a lifting device which is combined with a traction rope and electrically lifted and lowered, thereby effectively reducing the physical exertion of workers when climbing.

[0006] Another object of the present invention is to provide a lateral walking device that can move laterally along the conductor and is equipped with a deceleration device so as to accurately locate the maintenance operation position.

[0007] Another object of the present invention is to provide an overhead line maintenance operation method which combines a lifting device and a lateral walking device, which is easy to operate, highly efficient and saves the physical energy of the workers.

[0008] In order to achieve the above purpose, the technical solution adopted by the present invention is: A lifting device, comprising a triangular balancing bracket, an insulating anti-rope wear deceleration mechanism, an aluminum alloy shell explosion-proof lithium battery, a descending speed control mechanism and a backrest combination adjustment chair; The triangular balancing bracket is arranged at the bottom of the transmission line aerial work lifting device and is detachably connected to the insulating rope wear prevention speed reduction mechanism; The insulating rope wear prevention deceleration mechanism is powered by an aluminum alloy shell explosion-proof lithium battery fixedly arranged on one side, and can be rotated to wind the insulating rope. A descending speed control mechanism is provided on the other side of the insulating rope wear prevention deceleration mechanism; The descending speed control mechanism is transmission-connected with the insulating rope wear-proof deceleration mechanism, and the descending speed can be controlled by the insulating rope wear-proof deceleration mechanism; The backrest combination adjustable chair is arranged at the top of the transmission line aerial work lifting device, and the two sides of its bottom are respectively fixedly connected to the descending speed control mechanism and the aluminum alloy shell explosion-proof lithium battery, and its front end is fixedly arranged; The insulating rope anti-wear speed reduction mechanism comprises a rope clamping assembly, a wire blocking assembly, an insulating rope reel, a gear box and a brushless motor.

[0009] A lateral walking device comprises: a left hanger and a right hanger connected to the conductor at the upper ends, a plurality of connecting cross bars connected to the left hanger at one end and the right hanger at the other end, a driving device arranged at the front side of the right hanger, a speed reduction device arranged at the inner side of the left hanger or the right hanger, and a rope threading device detachably connected to the connecting cross bar; the bottom of the rope threading device is connected to the high-altitude lifting device; the bottom of the speed reduction device is against the conductor; an inverted U-shaped hook is arranged on the upper ends of the left and right hangers, an auxiliary wheel is rotatably connected to the top of the inverted U-shaped hook of the left hanger, and a walking wheel is rotatably connected to the top of the inverted U-shaped hook of the right hanger; the auxiliary wheel and the walking wheel are placed above the conductor; the walking wheel is sleeved with the right hanger through a third rotating shaft, the third rotating shaft is rotatably connected to the right hanger, the walking wheel is fixedly connected to the third rotating shaft, and one end of the third rotating shaft passes through the front side of the right hanger; The driving device includes: a fifth connecting shaft with one end sleeved on the front side of the right hanging bracket, a driving pulley coaxially fixedly connected to the other end of the fifth connecting shaft, an electric wrench joint coaxially fixedly connected to the driving pulley, a driven pulley fixedly connected to one end of the third rotating shaft, and a transmission belt sleeved on the driving pulley and the driven pulley. The fifth connecting shaft and the right hanging bracket can rotate relative to each other.

[0010] Preferably, the left hanger is connected to the auxiliary wheel via a first rotating shaft, a bearing is provided between the first rotating shaft and the auxiliary wheel, the bottom of the inverted U-shaped hook of the left hanger is rotatably connected to a first gear rod via a second rotating shaft, the top of the first gear rod is in contact with the inner side of the inverted U-shaped hook of the left hanger, and a first spring is provided between the inner side of the first gear rod and the left hanger.

[0011] Preferably, a bearing is provided between the right hanger and the third rotating shaft, a fixed key is provided between the walking wheel and the third rotating shaft, the bottom of the inverted U-shaped hook of the right hanger is rotatably connected to a second gear rod through a fourth rotating shaft, the top of the second gear rod is in contact with the inner side of the inverted U-shaped hook of the right hanger, and a second spring is provided between the inner side of the second gear rod and the right hanger.

[0012] Preferably, a limiting groove is provided at the bottom of the front side of the right hanger, and a plurality of connecting holes are respectively provided on both sides of the limiting groove. An adjustment block is slidably connected in the limiting groove, and the adjustment block is sleeved on the end of the fifth connecting shaft away from the driving pulley. A bearing is provided between the adjustment block and the fifth connecting shaft, and a limiting protrusion matching the limiting groove is provided on the adjustment block, and waist-shaped holes are respectively provided on both sides of the limiting protrusion. A through hole is provided on the top of the adjustment block, and a limiting bolt is provided in the through hole.

[0013] Preferably, a protective shell is provided on the front side of the driving device, and the protective shell is detachably connected to the right hanging bracket.

[0014] Preferably, the deceleration device includes: a connecting block fixedly connected to the inner side of the left hanger or the right hanger, a screw sleeved with the connecting block, both ends of the screw passing through the connecting block, a pressure block fixedly connected to one end of the screw, a rotating handle fixedly connected to the idle end of the screw, an internal thread matching the external thread of the screw is provided at the connection block and the screw sleeve, and an anti-slip pad is provided at the bottom of the pressure block.

[0015] Preferably, a receiving groove is provided on the front side of the rope threading device, a guide wheel is provided on the top of the receiving groove, a safety rod is provided in front of the guide wheel, and a plurality of hooks are provided on the front and rear sides of the rope threading device.

[0016] Preferably, an extension section is provided at the bottom of the left and right hangers, and one end of the connecting cross bar is connected to the extension section of the left hanger and the other end is connected to the extension section of the right hanger.

[0017] An overhead line maintenance operation method combining a lifting device and a lateral walking device comprises the following steps: S1. Release the traction rope. Combined with the rope length of the operation team, select the location where the line needs to be placed and use the drone to release the traction rope. S2. Install the lateral travel device, tie the traction rope to the lateral travel device, and turn on the deceleration device of the lateral travel device; tie the high-strength static rope for the lifting device and the fall protection backup protection rope for the equipotential workers to the lateral travel device; the ground workers operate the traction rope and hang the lateral travel device on the wire; S3. Install the lifting device and check whether the appearance and main components of the lifting device are normal; the ground operator connects the rope threader to the lifting device, passes the static rope through the rope threader, and connects the static rope to the rope clamping assembly in the insulating rope anti-wear deceleration mechanism of the lifting device; S4. Equipotential workers enter the electric field. They wear a full set of qualified shielding suits, sit on the chair, fasten the anti-fall protection rope, sit on the lifting device, and operate the lifting device to enter the electric field; S5. Enter the defective position of the live line and perform operations. Connect the rope threader to the horizontal bar of the lateral travel device, close the deceleration device of the lateral travel device, drive the lifting device and the operator to move horizontally along the conductor through the lateral travel device to enter the defective position of the live line, open the deceleration device of the lateral travel device, lock the lateral travel device, and perform overhead line maintenance operations; S6. Exit the defective position of the live line. After the overhead line maintenance work is completed, close the deceleration device of the lateral travel device, drive the lifting device and the operator to move horizontally along the conductor back to the offline position through the lateral travel device, and open the deceleration device of the lateral travel device; S7. The equipotential workers exit the electric field. After the maintenance work is completed, they check that there are no leftovers from the work, check the connection of each point of the shielding suit, and report to the person in charge of the work after confirming that the connection is firm. After obtaining the permission order, they use the potential transfer rod to transfer the potential, exit the electric field, and operate the lifting device to return to the ground; S8. Remove the work tools and clean up the work site. The ground workers remove the horizontal walking device hanging on the wire, lower it to the ground with a traction rope, clean up the work site, and the work is completed.

[0018] Preferably, the step S1 in which the drone drops the traction rope comprises the following steps: a. Set up the drone: set up an observation line 10m away from the vertical projection of the side phase conductor; set up a helipad and moisture-proof mat in parallel in sequence outside the 10-meter observation line, set up the drone on the helipad, and arrange an insulating traction rope in an S shape on the moisture-proof mat. One end of the insulating traction rope is connected to a plumb bob, and the plumb bob is connected to the towing buckle device of the drone; b. Check the drone: The operator checks and confirms that the drone's body structure, the battery level of the remote controller, the data transmission facilities between the drone and the remote controller, and the status of the towing device are normal; c. Drone rope throwing: The operator detects the wind speed, and when the wind speed meets the drone flight requirements of ≤5m / s, the drone rope is thrown; the drone pilot operates the drone to carry the plumb bob and the traction rope to take off vertically. After reaching a height twice the distance of the conductor to the ground, the pilot operates the drone to fly horizontally to the inside of the line, that is, keeping the vertical distance to the ground unchanged. The observer stands on the ground between the side-phase conductor and the ground wire for observation. When the drone reaches between the side-phase conductor and the ground wire, the operator uses the hand crank to open the towing device, so that the plumb bob carrying the traction rope falls vertically and falls to the ground. The drone returns to the original route and lands back on the helipad. After the drone lands, make sure that the remote control is locked, first cut off all types of power to the drone, and then cut off the power to the remote control.

[0019] Preferably, after the lateral walking device is hung on the conductor in step S2, two operators perform an impact inspection test on it to confirm whether it is hung firmly.

[0020] Preferably, in step S4, the medium-potential operator operates the lifting device and pauses when it is about 1m away from the ground. Two ground operators perform an impact test on the lifting device and the backup protection. After confirming that the impact test is qualified, the equal-potential operator operates the lifting device to rise to 0.5m away from the conductor and pauses, checks the connection points of the shielding suit again and confirms that the connection is secure, reports to the person in charge of the work, completes the potential transfer with the potential transfer rod after obtaining the permission order, and continues to operate the lifting device to lift the personnel to the working position for maintenance work.

[0021] Preferably, in step S4, a fall arrester is installed on the protection rope, and the potential operator is connected to the fall arrester after wearing a full set of qualified shielding clothing and sitting on the chair.

[0022] Preferably, in step S4, during the ascending process of the lifting device, within the range allowed by the safe load of the lifting device, tools or materials can be carried and lifted together.

[0023] Preferably, in step S5, the electric wrench is sleeved with the electric wrench connector, and the electric wrench is used to drive the lateral walking device to drive the lifting device and the operator to move laterally along the conductor back to the offline position.

[0024] Preferably, in step S6, the electric wrench and the electric wrench connector are sleeved, and the electric wrench is used to drive the lateral walking device to drive the lifting device and the operator to move laterally along the conductor into the defective position of the energized line.

[0025] Preferably, in step 3, to check whether the main components of the lifting device are normal, it is necessary to turn on the power of the electric device, check whether the power is sufficient, and detect and confirm that the ascending and descending functions of the electric device are normal.

[0026] The present invention discloses an overhead line maintenance operation method combining a lifting device with a lateral walking device, which has the following beneficial effects.

[0027] The present invention operates on the conductor only by cooperating with the unmanned aerial vehicle. The unmanned aerial vehicle is operated by the ground operator to release a traction rope. The ground operator ties the static rope used for the lifting device and the backup protection rope for personal fall protection to the lateral walking device. The ground operator uses the traction rope to hang the lateral walking device on the conductor, and then installs the lifting device and the static rope. The equipotential operator fastens the safety belt and the backup protection rope, sits on the lifting device, and operates the device by himself to reach the upper line position, and then uses the lateral walking device to enter the defective position of the energized line to carry out work; the application scope of the lifting device is expanded, so that maintenance operations in large span and distance areas can also achieve precise positioning, reducing the need for operators to carry soft ladders or use physically intensive equipment such as flying cars, thereby reducing the physical burden of workers when working at high altitudes, reducing the need for operators to perform dangerous actions (such as self-walking or using soft ladder racks to move), and increasing the safety of high-altitude operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the lateral walking device of the present invention.

[0029] Figure 2 This is a schematic diagram of the structure of the lateral walking device of the present invention after removing the protective shell.

[0030] Figure 3 This is another schematic diagram of the structure of the lateral walking device of the present invention after removing the protective shell.

[0031] Figure 4 This is a schematic diagram of the right side structure of the lateral walking device of the present invention after removing the protective shell.

[0032] Figure 5 This is a front view structural schematic diagram of the lateral walking device of the present invention after removing the protective shell.

[0033] Figure 6 for Figure 5 Schematic diagram of the cutaway structure of section AA.

[0034] Figure 7 It is a schematic diagram of the structure of the adjustment block of the lateral walking device of the present invention.

[0035] Figure 8 It is a schematic diagram of the connection between the lateral walking device and the lifting device on the conductor of the present invention.

[0036] Fig. 9 This is another schematic diagram of the connection between the lateral walking device and the lifting device on the conductor of the present invention.

[0037] Fig.10 The present invention is a flow chart of an overhead line maintenance operation method combining a lifting device and a lateral walking device.

[0038] In the attached drawings: 1, left bracket; 11, auxiliary wheel; 12, first rotating shaft; 13, first gear lever; 14, second rotating shaft; 15, first spring; 2, right bracket; 21, walking wheel; 22, third rotating shaft; 23, second gear lever; 24, fourth rotating shaft; 25, second spring; 26, limiting groove; 27, connecting hole; 28, fixing key; 3, connecting cross bar; 4, driving device; 41, adjusting block; 411, waist-shaped hole; 412, through hole; 413, limiting convex block; 42, fifth connecting shaft; 43, driving pulley; 44, electric wrench joint; 45, driven pulley; 46, transmission belt; 47, Connecting sleeve; 48, limit bolt; 5, protective shell; 6, speed reducer; 61, connecting block; 62, screw; 63, rotating handle; 64, pressure block; 65, anti-slip pad; 7, rope threader; 71, receiving slot; 72, hook; 73, guide wheel; 74, safety bar; 8, static rope; A1, triangular balance bracket; A2, insulated anti-rope wear speed reduction mechanism; A3, aluminum alloy shell explosion-proof lithium battery; A4, descending speed control mechanism and; A5, backrest combination adjustment chair; A15, rope clamping assembly; A16, wire blocking assembly; A17, insulated rope reel; A18, gear box; A19, brushless motor. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0040] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example 1

[0041] Reference Figures 1 to 6A lateral walking device comprises: a left hanger 1 and a right hanger 2 whose upper ends are clamped above the wire, a plurality of connecting cross bars 3 connected to the left hanger 1 by bolts at one end and to the right hanger 2 by bolts at the other end, a driving device 4 arranged at the front side of the right hanger 2, a deceleration device 6 arranged on the inner side of the left hanger 1 or the right hanger 2, and a rope threader 7 clamped to the connecting cross bars 3; in this embodiment, there are two specific connecting cross bars 3, the deceleration device 6 is arranged on the inner side of the right hanger 2, and the bottom of the rope threader 7 is connected to the high-altitude lifting device; the bottom of the deceleration device 6 is against the wire; the left hanger 1 and the upper end of the right hanger 2 is provided with an inverted U-shaped hook 72, the top of the inverted U-shaped hook 72 of the left hanger 1 is rotatably connected to an auxiliary wheel 11, and the auxiliary wheel 11 can rotate relative to the wire, and the top of the inverted U-shaped hook 72 of the right hanger 2 is rotatably connected to a running wheel 21, and the running wheel 21 can rotate relative to the wire; the auxiliary wheel 11 and the running wheel 21 are placed above the wire; the running wheel 21 is sleeved with the right hanger 2 through a third rotating shaft 22, the third rotating shaft 22 is rotatably connected to the right hanger 2, the running wheel 21 is fixedly connected to the third rotating shaft 22, and one end of the third rotating shaft 22 passes through the front side of the right hanger 2; Preferably, the left bracket 1 is connected to the auxiliary wheel 11 through a first rotating shaft 12, a bearing is provided between the first rotating shaft 12 and the auxiliary wheel 11, the bottom of the inverted U-shaped hook 72 of the left bracket 1 is rotatably connected to a first baffle rod 13 through a second rotating shaft 14, the top of the first baffle rod 13 is in contact with the inner side of the inverted U-shaped hook 72 of the left bracket 1, and a first spring 15 (not shown in the figure) is provided between the inner side of the first baffle rod 13 and the left bracket 1. The first baffle rod 13 is in contact with the inner side of the inverted U-shaped hook 72 of the left bracket 1 under the push of the spring to prevent the wire from escaping from the left bracket 1.

[0042] A bearing is provided between the right bracket 2 and the third rotating shaft 22, and a fixed key 28 is provided between the running wheel 21 and the third rotating shaft 22 to ensure that there is no relative rotation between the third rotating shaft 22 and the running wheel 21. The bottom of the inverted U-shaped hook 72 of the right bracket 2 is rotatably connected to the second gear rod 23 through the fourth rotating shaft 24, and the top of the second gear rod 23 contacts the inner side of the inverted U-shaped hook 72 of the right bracket 2. A second spring 25 is provided between the inner side of the second gear rod 23 and the right bracket 2. The second gear rod 23 contacts the inner side of the inverted U-shaped hook 72 of the right bracket 2 under the push of the spring to prevent the wire from escaping from the right bracket 2.

[0043] An extension section is provided at the bottom of the left hanger 1 and the right hanger 2, and one end of the connecting cross bar 3 is connected to the extension section of the left hanger 1 and the other end is connected to the extension section of the right hanger 2.

[0044] The left hanger 1, the right hanger 2 and the rope threader 7 are provided with a plurality of weight reduction grooves. The left hanger 1 and the right hanger 2 can be indistinguishable from left to right. Since most people are right-handed, the hanger with the driving device 4 is arranged on the right side for the convenience of using an electric wrench to drive.

[0045] The left hanger 1, the right hanger 2 and the rope threader 7 are provided with a plurality of weight reduction grooves. It is worth noting that the left hanger 1 and the right hanger 2 can be indistinguishable from left to right. Since most people are right-handed, the hanger with the driving device 4 is arranged on the right side for the convenience of driving with an electric wrench.

[0046] Please refer to Figure 6 The driving device 4 includes: a fifth connecting shaft 42 with one end sleeved on the front side of the right hanging frame 2, a driving pulley 43 coaxially fixedly connected to the other end of the fifth connecting shaft 42, an electric wrench connector 44 coaxially fixedly connected to the driving pulley 43, a driven pulley 45 fixedly connected to one end of the third rotating shaft 22, and a transmission belt 46 sleeved on the driving pulley 43 and the driven pulley 45. The fifth connecting shaft 42 and the right hanging frame 2 can rotate relative to each other. Two bearings are provided at the sleeve position of the fifth connecting shaft 42 and the right hanging frame 2. The electric wrench connector 44 is fixedly connected to the fifth connecting shaft 42 through a connecting sleeve 47. The electric wrench connector 44 is driven by the electric wrench, thereby driving the fifth connecting shaft 42 to rotate, thereby driving the driving pulley 43 to rotate, and driving the transmission belt 46 to rotate, thereby driving the driven pulley 45 to rotate, thereby driving the third rotating shaft 22 to rotate, thereby driving the walking wheel 21 to rotate relative to the wire, thereby driving the device as a whole to move laterally along the wire.

[0047] This embodiment sets a plurality of connecting bars 3 between the left hanger 1 and the right hanger 2, sets a detachable rope threading device 7 on the connecting bars 3, and then connects with the high-altitude lifting device through the rope threading device 7, and sets a driving device 4 powered by an electric wrench on the right hanger 2, and drives the running wheel 21 on the right hanger 2 to rotate through the driving device 4, thereby driving the entire device to move laterally along the wire, and further sets a deceleration device 6, and when deceleration is needed, the pressure block 64 rubs against the wire to decelerate, and brake deceleration can be performed. The application scope of the high-altitude lifting device is expanded, so that maintenance operations in large span areas can also achieve precise positioning.

[0048] Please refer to Figure 3 , Figure 4 , Figure 6 and Figure 7A limiting groove 26 is provided at the bottom of the front side of the right hanger 2, and three connecting holes 27 are respectively provided on both sides of the limiting groove 26. An adjusting block 41 is slidably connected in the limiting groove 26. The adjusting block 41 and the fifth connecting shaft 42 are sleeved at one end away from the active pulley 43. A bearing is provided between the adjusting block 41 and the fifth connecting shaft 42. A limiting protrusion 413 matching the limiting groove 26 is provided on the adjusting block 41, and waist-shaped holes 411 are respectively provided on both sides of the limiting protrusion 413. A through hole 412 is provided at the top of the adjusting block 41, and a limiting bolt 48 is provided in the through hole 412. By connecting the fifth connecting shaft 42 with the adjusting block 41 first, and then slidingly connecting the adjusting block 41 with the bottom of the front side of the right hanger 2, the distance between the active pulley 43 and the driven pulley 45 can be adjusted within a certain range, so that relative sliding between the transmission belt 46 and the active pulley 43 and the driven pulley 45 can be prevented after the transmission belt 46 is stretched, so as to better ensure the driving effect. A protective shell 5 is provided on the front side of the driving device 4 , and the protective shell 5 is detachably connected to the right hanging bracket 2 to prevent the driving device 4 from hurting people.

[0049] Please refer to Figure 2 The deceleration device 6 includes: a connection block 61 fixedly connected to the inner side of the left bracket 1 or the right bracket 2, a screw 62 sleeved with the connection block 61, both ends of the screw 62 pass through the connection block 61, a pressure block 64 is fixedly connected to one end of the screw 62, a rotating handle 63 is fixedly connected to the idle end of the screw 62, an internal thread matching the external thread of the screw 62 is provided at the sleeve of the connection block 61 and the screw 62, and an anti-skid pad 65 is provided at the bottom of the pressure block 64, which can prevent the deceleration mechanism from failing and avoid damaging the wire. By twisting the rotating handle 63, the screw 62 rotates and drives the pressure block 64 to move up and down, so that the pressure block 64 presses or loosens the wire, and the device moves horizontally to a suitable position and is fixed at the position by the deceleration mechanism to prevent the device from moving.

[0050] Please refer to Figure 1 A receiving groove 71 is provided on the front side of the rope threader 7, a guide wheel 73 is provided on the top of the receiving groove 71, a safety rod 74 is provided in front of the guide wheel 73, and two hooks 72 are provided on the front and rear sides of the rope threader 7. One end of the static rope 8 is hung on the wire, and the other end passes through the rope threader 7 and is fixed in position. Then, the bottom of the rope threader 7 is connected to the high-altitude lifting device, and the high-altitude lifting device is pulled up. The rope threader 7 is hung on the connecting cross bar through the hook 72. At this time, the high-altitude lifting device is in place. At this time, if it needs to be moved left and right, it only needs to be driven by a driving device 4 provided on the right bracket 2 and powered by an electric wrench. The driving device 4 drives the walking wheel 21 on the right bracket 2 to rotate, thereby driving the entire device to move laterally along the wire. Example 2

[0051] Please refer to Fig.10, Based on Example 1, this embodiment provides an overhead line maintenance operation method combining a lifting device and a lateral walking device. The lifting device used in this embodiment has been disclosed in the patent with publication number CN112117703B. The lifting device includes a triangular balancing bracket A1, an insulating anti-rope wear deceleration mechanism A2, an aluminum alloy shell explosion-proof lithium battery A3, a descending speed control mechanism A4 and a backrest combination adjustment chair A5; The triangular balancing bracket A1 is arranged at the bottom of the transmission line aerial work lifting device, and is detachably connected to the insulating rope wear prevention deceleration mechanism A2; the insulating rope wear prevention deceleration mechanism A2 is powered by an aluminum alloy shell explosion-proof lithium battery A3 fixedly arranged on one side, and can rotate to wind the insulating rope, and the other side of the insulating rope wear prevention deceleration mechanism A2 is provided with a descending speed control mechanism; the descending speed control mechanism is transmission-connected with the insulating rope wear prevention deceleration mechanism A2, and can control the descending speed through the insulating rope wear prevention deceleration mechanism A2; the backrest combination adjustment chair A5 is arranged at the top of the transmission line aerial work lifting device, and the two sides of its bottom are respectively fixedly connected to the descending speed control mechanism and the A4 aluminum alloy shell explosion-proof lithium battery A3, and its front end is fixedly arranged; the insulating rope wear prevention deceleration mechanism includes a rope clamping assembly A15, a wire blocking assembly A16, an insulating rope reel A17, a gear box A18 and a brushless motor A19; An overhead line maintenance operation method combining a lifting device and a lateral walking device comprises the following steps: S1. Release the traction rope, and select the position where the line needs to be placed based on the rope length of the work team. Use a drone to release the traction rope. It is worth noting that the selected position for going online is not necessarily the position of the defect in the live line. Other lower positions can be selected, and then the workers will enter the position of the defect in the live line along the conductor. For example, in the case of large spans (rivers, deep ditches, high-speed canyons, dense forests, etc.), it is necessary to select a position at a low distance from the ground to send the workers to the conductor, and then the workers will enter the position of the defect in the live line along the conductor. Choosing to enter the conductor from a lower position can save the length of all auxiliary ropes used.

[0052] Preferably, in this embodiment, the drone dropping the traction rope in step S1 includes the following steps: a. Set up the drone: set up an observation line 10m away from the vertical projection of the side phase conductor; set up a helipad and moisture-proof mat in parallel in sequence outside the 10-meter observation line, set up the drone on the helipad, and arrange an insulating traction rope in an S shape on the moisture-proof mat. One end of the insulating traction rope is connected to a plumb bob, and the plumb bob is connected to the towing buckle device of the drone; b. Check the drone: The operator checks and confirms that the drone's body structure, the battery level of the remote controller, the data transmission facilities between the drone and the remote controller, and the status of the towing device are normal; c. Drone rope throwing: The operator detects the wind speed, and when the wind speed meets the drone flight requirements of ≤5m / s, the drone rope is thrown; the drone pilot operates the drone to carry the plumb bob and the traction rope to take off vertically. After reaching a height twice the distance of the conductor to the ground, the pilot operates the drone to fly horizontally to the inside of the line, that is, keeping the vertical distance to the ground unchanged. The observer stands on the ground between the side-phase conductor and the ground wire for observation. When the drone reaches between the side-phase conductor and the ground wire, the operator uses the hand crank to open the towing device, so that the plumb bob carrying the traction rope falls vertically and falls to the ground. The drone returns to the original route and lands back on the helipad. After the drone lands, make sure that the remote control is locked, first cut off all types of power to the drone, and then cut off the power to the remote control.

[0053] S2. Install the lateral travel device, tie the traction rope to the lateral travel device, and turn on the deceleration device 6 of the lateral travel device; tie the high-strength static rope 8 for the lifting device and the fall-proof backup protection rope for the equipotential workers to the lateral travel device; the ground workers operate the traction rope to hang the lateral travel device on the wire; make the lower plane of the pressure block 64 lower than the contact surface between the walking wheel 21 and the wire; place the wire below the auxiliary wheel 11 between the first gear lever 13 and the left bracket 11 and below the walking wheel 21 between the second gear lever 23 and the right bracket 2; Preferably, in this embodiment, after the lateral walking device is hung on the conductor in step S2, two operators perform an impact inspection test on it to confirm whether it is hung firmly.

[0054] S3. Install the lifting device and check whether the appearance and main components of the lifting device are normal; the ground operator connects the rope threading device 7 to the lifting device, passes the static rope 8 through the rope threading device 7, and connects the static rope 8 to the rope clamping assembly A15 in the insulating rope anti-wear deceleration mechanism of the lifting device; Preferably, in this embodiment, in step 3, to check whether the main components of the lifting device are normal, it is necessary to turn on the power of the electric device, check whether there is sufficient power, and test to confirm that the rising and lowering functions of the electric device are normal.

[0055] S4. Equipotential workers enter the electric field. They wear a full set of qualified shielding suits, sit on the chair, fasten the anti-fall protection rope, sit on the lifting device, and operate the lifting device to enter the electric field; As a preferred embodiment, in this embodiment, in step S4, the equal potential operator operates the lifting device, and pauses when it is about 1m away from the ground. Two ground operators perform an impact test on the lifting device and the backup protection. After confirming that the impact test is qualified, the equal potential operator operates the lifting device to rise to 0.5m away from the wire and pauses, checks the connection points of the shielding suit again and confirms that the connection is reliable, reports to the person in charge of the work, completes the potential transfer with the potential transfer rod after obtaining the permission order, and continues to operate the lifting device to lift the personnel to the working position for maintenance work; In step S4, a fall arrester is installed on the protective rope, and the potential operator sits on the chair wearing a full set of qualified shielding clothing and connects the fall arrester; in step S4, during the ascent of the lifting device, tools or materials can be carried and lifted together within the range allowed by the safe load of the lifting device.

[0056] S5, enter the defective position of the live line and perform the operation, connect the rope threader 7 to the horizontal travel device connecting bar 3, close the deceleration device 6 of the horizontal travel device, the position relationship between the horizontal travel device and the lifting device is as follows Figure 8 and Fig. 9 As shown, the lifting device and the operator are driven by the lateral walking device to move laterally along the conductor into the defective position of the live line, the deceleration device 6 of the lateral walking device is turned on, the lateral walking device is locked, and the overhead line maintenance operation is carried out; Preferably, in this embodiment, the electric wrench and the electric wrench connector 44 are mounted, and the electric wrench is used to drive the lateral walking device to drive the lifting device and the operator to move laterally along the conductor back to the offline position. Specifically, the electric wrench and the electric wrench connector 44 are mounted, and the electric wrench is used to drive the walking wheel 21 to drive the lifting device and the operator to move laterally along the conductor into the defective position of the energized line.

[0057] S6, exit the defective position of the live line, close the deceleration device 6 of the lateral travel device after the overhead line maintenance work is completed, drive the lifting device and the operator to move horizontally along the conductor back to the offline position through the lateral travel device, and open the deceleration device 6 of the lateral travel device; As a preferred embodiment, in this embodiment, the electric wrench and the electric wrench connector 44 are set, and the electric wrench is used to drive the lateral walking device to drive the lifting device and the operator to move laterally along the wire to enter the defective position of the live line. Specifically, the electric wrench and the electric wrench connector 44 are set, and the electric wrench is used to drive the walking wheel 21 to drive the lifting device and the operator to move laterally along the wire back to the offline position; S7. The equipotential workers exit the electric field. After the maintenance work is completed, they check that there are no leftovers from the work, check the connection of each point of the shielding suit, and report to the person in charge of the work after confirming that the connection is firm. After obtaining the permission order, they use the potential transfer rod to transfer the potential, exit the electric field, and operate the lifting device to return to the ground; S8. Remove the work tools and clean up the work site. The ground workers remove the horizontal walking device hanging on the wire, lower it to the ground with a traction rope, clean up the work site, and the work is completed.

[0058] In this embodiment, when working on the conductor, it is only necessary to cooperate with the drone. The ground operator operates the drone and drops a traction rope. The ground operator ties the static rope 8 used for the lifting device and the backup protection rope for personal fall protection to the lateral walking device. The ground operator uses the traction rope to hang the lateral walking device on the conductor, and then installs the lifting device and the static rope 8. The equipotential operator fastens the safety belt and the anti-fall protection rope, sits on the lifting device, and operates the device by himself to reach the upper line position, and then uses the lateral walking device to enter the defective position of the live line to carry out work (replace the spacer, replace the shockproof hammer, repair the conductor, etc.); the application scope of the lifting device is expanded, so that the maintenance work in the large span barrier area can also achieve precise positioning, reducing the need for operators to carry soft ladders or use physically intensive equipment such as flying cars, thereby reducing the physical burden of workers when working at high altitudes, reducing the need for operators to perform dangerous actions (such as self-walking or using soft ladder racks to move), and increasing the safety of high-altitude operations.

[0059] The above are only preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto. The substitution may be a substitution of a part of the structure, device, method step, or a complete technical solution. Any equivalent replacement or change according to the technical solution and the inventive concept of the present invention shall be covered within the protection scope of the present invention.

Claims

1. An overhead line maintenance operation method combining a lifting device and a lateral walking device, characterized in that: The following steps are involved: S1. Release the traction rope. Combined with the rope length of the operation team, select the location where the line needs to be placed and use the drone to release the traction rope. S2. Install the lateral travel device, tie the traction rope to the lateral travel device, and turn on the deceleration device of the lateral travel device; tie the high-strength static rope for the lifting device and the fall protection backup protection rope for the equipotential workers to the lateral travel device; the ground workers operate the traction rope and hang the lateral travel device on the wire; S3. Install the lifting device and check whether the appearance and main components of the lifting device are normal; the ground operator connects the rope threader to the lifting device, passes the static rope through the rope threader, and connects the static rope to the rope clamping assembly in the insulating rope anti-wear deceleration mechanism of the lifting device; S4. Equipotential workers enter the electric field. They wear a full set of qualified shielding suits, sit on the chair, fasten the anti-fall protection rope, sit on the lifting device, and operate the lifting device to enter the electric field; S5. Enter the defective position of the live line and perform operations. Connect the rope threader to the horizontal bar of the lateral travel device, close the deceleration device of the lateral travel device, drive the lifting device and the operator to move horizontally along the conductor through the lateral travel device to enter the defective position of the live line, open the deceleration device of the lateral travel device, lock the lateral travel device, and perform overhead line maintenance operations; S6. Exit the defective position of the live line. After the overhead line maintenance work is completed, close the deceleration device of the lateral travel device, drive the lifting device and the operator to move horizontally along the conductor back to the offline position through the lateral travel device, and open the deceleration device of the lateral travel device; S7. The equipotential workers exit the electric field. After the maintenance work is completed, they check that there are no leftovers from the work, check the connection of each point of the shielding suit, and report to the person in charge of the work after confirming that the connection is firm. After obtaining the permission order, they use the potential transfer rod to transfer the potential, exit the electric field, and operate the lifting device to return to the ground; S8. Remove the work tools and clean up the work site. The ground workers remove the horizontal walking device hanging on the wire, lower it to the ground with a traction rope, clean up the work site, and the work is completed.

2. The overhead line maintenance operation method combining a lifting device and a lateral walking device according to claim 1 is characterized in that: The step S1 in which the drone releases the traction rope includes the following steps: a. Set up the drone: set up an observation line 10m away from the vertical projection of the side phase conductor; set up a helipad and moisture-proof mat in parallel in sequence outside the 10-meter observation line, set up the drone on the helipad, and arrange an insulating traction rope in an S shape on the moisture-proof mat. One end of the insulating traction rope is connected to a plumb bob, and the plumb bob is connected to the towing buckle device of the drone; b. Check the drone: The operator checks and confirms that the drone's body structure, the battery level of the remote controller, the data transmission facilities between the drone and the remote controller, and the status of the towing device are normal; c. Drone rope throwing: The operator detects the wind speed, and when the wind speed meets the drone flight requirements of ≤5m / s, the drone rope is thrown; the drone pilot operates the drone to carry the plumb bob and the traction rope to take off vertically. After reaching a height twice the distance of the conductor to the ground, the pilot operates the drone to fly horizontally to the inside of the line, that is, keeping the vertical distance to the ground unchanged. The observer stands on the ground between the side-phase conductor and the ground wire for observation. When the drone reaches between the side-phase conductor and the ground wire, the operator uses the hand crank to open the towing device, so that the plumb bob carrying the traction rope falls vertically and falls to the ground. The drone returns to the original route and lands back on the helipad. After the drone lands, make sure that the remote control is locked, first cut off all types of power to the drone, and then cut off the power to the remote control.

3. The overhead line maintenance operation method combining a lifting device and a lateral walking device according to claim 1 is characterized in that: After the lateral walking device is hung on the conductor in step S2, two operators perform an impact inspection test on it to confirm whether it is hung firmly.

4. The overhead line maintenance operation method combining a lifting device and a lateral walking device according to claim 1 is characterized in that: In the step S4, the medium-potential operator operates the lifting device and pauses when it is about 1m away from the ground. Two ground operators perform an impact test on the lifting device and the backup protection. After confirming that the impact test is qualified, the equal-potential operator operates the lifting device to rise to 0.5m away from the conductor and pauses. The operator checks the connection points of the shielding suit again and confirms that the connection is secure. The operator reports to the person in charge of the work, completes the potential transfer with the potential transfer rod after obtaining the permission order, and continues to operate the lifting device to lift the personnel to the working position for maintenance work.

5. The overhead line maintenance operation method combining a lifting device and a lateral walking device according to claim 1 or 4, characterized in that: In step S4, a fall arrester is installed on the protection rope, and the potential operator wears a full set of qualified shielding clothing and sits on the chair, and then connects the fall arrester.

6. The overhead line maintenance operation method combining a lifting device and a lateral walking device according to claim 1 or 4, characterized in that: In step S4, during the ascending process of the lifting device, within the range allowed by the safe load of the lifting device, tools or materials can be carried and lifted together.

7. The overhead line maintenance operation method combining a lifting device and a lateral walking device according to claim 1 is characterized in that: In step S5, the electric wrench is used to drive the lateral walking device to drive the lifting device and the operator to move laterally along the conductor back to the offline position.

8. The overhead line maintenance operation method combining a lifting device and a lateral walking device according to claim 1 is characterized in that: In step S6, an electric wrench is used to drive the lateral walking device to drive the lifting device and the operator to move laterally along the conductor into the defective position of the energized line.

9. The overhead line maintenance operation method combining a lifting device and a lateral walking device according to claim 1 is characterized in that: In step 3, to check whether the main components of the lifting device are normal, it is necessary to turn on the power of the electric device, check whether the power is sufficient, and test to confirm that the rising and lowering functions of the electric device are normal.

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