Live-line work wire backup protection device and method

Abstract

The invention relates to the technical field of electric power overhaul, in particular to a live-line work wire backup protection device and method.The live-line work wire backup protection device comprises a support and a speed difference automatic controller, guide through grooves parallel to each other are formed in the vertical faces of the two opposite sides of the support respectively, and the speed difference automatic controller is arranged between the vertical faces of the two sides of the support; the two sides of the shell are vertically connected with spindles in sliding connection with the guide through grooves respectively, Y-shaped connecting rods are arranged outside the vertical faces of the two sides of the support, the opening ends of the Y-shaped connecting rods are hinged to the spindles at the two ends respectively, the top of the support is connected with a transversely-arranged fixing plate through bolts, and a wire pressing plate is arranged under the fixing plate in a right-facing mode. A connecting rod A and a connecting rod B are hinged between the fixing plate and the wire pressing plate, the lower end of the connecting rod A is hinged to the other end of the Y-shaped connecting rod, and a pullback device is hinged between the hinged end of the connecting rod B and the wire pressing plate and the support. According to the invention, the risk that an operator easily intrudes into an air gap due to repeated station adjustment is avoided, the intrinsic safety is enhanced, and meanwhile, the working quality and efficiency are obviously improved.

Description

Technical Field

[0001] The invention relates to the technical field of backup protection for electric power maintenance conductors, and in particular to a backup protection device and method for live working conductors. Background Art

[0002] The distribution network is an important part of the power system. The tension pole is the breakable point of the entire line, which can be used to "break the whole line into parts" for fine maintenance of the line. When a fault occurs, the power supply personnel can quickly restore normal power supply to other users by means of power transfer, fault isolation, etc., making the line maintenance more accurate and further reducing the scope of power outages. Replacing loaded straight poles with tension poles is one of the common operation items in the distribution network and one of the important means to achieve tension poles. In the process of tightening and disconnecting the wires by replacing loaded straight poles with tension poles, the live working personnel did not use backup protection devices, or used backup protection ropes as simple backup protection measures. All of the above situations have serious safety hazards.

[0003] If backup protection devices are not used, once the tightening tool falls off or is damaged, it will cause an overhead wire run accident, causing great harm to on-site construction workers, the power grid and the equipment on its internal overhead lines.

[0004] The backup protection rope is used as a simple backup protection measure. The backup protection rope is in a loose state. If an accident occurs during the process of tightening and disconnecting the wire, the wire will run at a high speed and force, and it is very likely to break. On-site construction workers are also seriously threatened during the wire running process, which poses a great safety hazard. If the operator manually tightens the backup protection rope, the air gap will be violated when the movement amplitude is large, and the risk of single-phase grounding and phase short circuit is high, and the quality and efficiency of the operation is not high. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a backup protection device and method for live working conductors, which solves the risk of workers easily intruding into air gaps when adjusting their workstations multiple times, thereby enhancing inherent safety and significantly improving work quality and efficiency.

[0006] The present invention is achieved through the following technical solutions: Provided is a backup protection device for live working conductors, comprising a bracket with an H-shaped cross section and a speed difference controller, wherein mutually parallel and opposite guide through grooves are respectively transversely opened on the two side facades directly facing the bracket, the speed difference controller is arranged between the two side facades of the bracket, and main shafts respectively slidably connected to the guide through grooves are vertically connected on both sides of its shell, the bracket is provided with Y-shaped connecting rods outside the two side facades, the open ends of the Y-shaped connecting rods are respectively hinged to the main shafts at both ends, the top of the bracket is connected with a transversely arranged fixing plate by bolts, a wire pressing plate is directly arranged below the fixing plate, a connecting rod A and a connecting rod B are respectively hinged between the fixing plate and the wire pressing plate, the lower end of the connecting rod A is hinged to the other end of the Y-shaped connecting rod, and a puller is hinged between the hinged end of the connecting rod B with the wire pressing plate and the bracket.

[0007] In this solution, the puller is used to finally drive the connecting rod B so that the wire pressing plate and the fixing plate can firmly clamp the wire. At the same time, with the existence of the speed difference automatic controller, the insulating safety rope is always under a slight stress state. At the same time, the operator avoids the high risk of repeatedly adjusting the working position to adjust the backup protection insulating rope, and repeating tedious actions.

[0008] Preferably, the length of connecting rod A is greater than the length of connecting rod B.

[0009] The length of connecting rod A is greater than that of connecting rod B. Connecting rod A can be hinged to the Y-shaped connecting rod and the wire pressing plate to transmit the force of the Y-shaped connecting rod to achieve stable clamping of the wire by the wire pressing plate.

[0010] Preferably, two opposite surfaces of the fixing plate and the wire pressing plate are respectively provided with arc-shaped wire grooves for accommodating the wires.

[0011] By forming an arc-shaped wire groove on the fixing plate and the wire pressing plate, the arc-shaped wire groove can be adapted to the shape of the wire, thereby facilitating stable clamping of the wire.

[0012] Furthermore, at least two anti-slip plates are rotatably mounted on one side of the fixed plate in the length direction of the arc-shaped wire trough, and a paddle is connected to the anti-slip plate.

[0013] Two anti-slip plates are arranged on one side of the fixed plate in the length direction of the arc-shaped wire groove. The anti-slip plate is rotated perpendicular to the fixed plate by the paddle, so that the anti-slip plate is rotated to one side of the fixed plate and the wire pressing plate to block the guide, preventing the wire from falling out of the wire pressing plate and the fixed plate, thereby improving the clamping stability.

[0014] Furthermore, the two arc-shaped wire grooves are both connected with a clamping plate.

[0015] A clamping plate is arranged in the arc-shaped wire groove to increase the friction force with the wire, so that the fixing plate and the wire pressing plate can clamp the wire more stably.

[0016] Furthermore, the puller includes a sleeve and a sleeve rod, the sleeve is connected to the sleeve rod through a tension spring, the end of the sleeve is hinged to the bracket, and the end of the sleeve rod is hinged to the connecting rod B and the hinged end of the wire pressing plate.

[0017] The puller utilizes the guiding and limiting effect of the sleeve on the sleeve rod, and cooperates with the elastic force of the tension spring on the sleeve rod when it is deformed, so as to maintain the pulling force on the sleeve rod, and utilizes the tension effect to drive the connecting rod B so that the wire pressing plate and the fixing plate can better clamp the wire.

[0018] Furthermore, the length of the guide groove is greater than the maximum distance between the wire pressing plate and the fixing plate.

[0019] The length of the guide groove is greater than the maximum distance between the fixing plate and the wire pressing plate, so that the wire pressing plate and the fixing plate can be used for wires of different wire diameters, thereby expanding the scope of application.

[0020] Preferably, a weight-reducing hole is provided on the bracket.

[0021] By opening weight-reducing holes on the bracket, it helps to reduce the overall weight, lower costs and facilitate carrying and use.

[0022] Furthermore, the safety rope of the speed differential automatic controller is an insulating safety rope.

[0023] Insulated safety rope helps to improve insulation performance and protect the safety of operators.

[0024] A method for using a backup protection device for a live working conductor comprises the following steps: S1. Connect the mechanical hook at the end of the safety rope of the speed differential automatic controller to the cross arm of the pole; S2. The spindle slides in the guide groove of the bracket to move the wire pressing plate and the fixing plate away from each other, and the wire passes through the gap between the wire pressing plate and the fixing plate. The elastic effect of the tension spring inside the puller can drive the connecting rod B to make the wire pressing plate and the fixing plate approach each other and clamp the wire; S3. Rotate and adjust the anti-drop plate to clamp the wires in cooperation with the wire pressing plate and the fixing plate to prevent them from dropping out. S4. The tension spring is deformed in the puller to always apply tension to the connecting rod B. The wire pressing plate and the fixing plate clamp the wire and cooperate with the speed difference automatic controller. The safety rope is always in a state of slight stress and will not break due to excessive relaxation.

[0025] Beneficial effects of the present invention: The present invention has a simple overall structure, is easy to install, and has high reliability. The insulating safety rope can be automatically and timely placed in a state of slight stress during operation, and the operator does not need to adjust it. This fundamentally solves the problems of high risk of multiple adjustments to the working position, repetitive and cumbersome actions, and improves the inherent safety level of live working, while significantly improving the work quality and efficiency of live working.

[0026] By setting up an H-shaped bracket, the wire can be more conveniently passed through the gap between the wire pressing plate and the fixing plate from the side. By setting up an anti-drop plate, the wire can be prevented from falling off, thereby achieving stable clamping. The balance of the device can be maintained to ensure the stability of the overall structure of the device. At the same time, it is also convenient to take out the wire from the side, making installation and disassembly convenient.

[0027] By setting the speed difference automatic controller, the insulating safety rope is always slightly stressed to prevent the insulating safety rope from being too loose, causing the backup protection of the wire to fail and posing a threat to personal safety. The speed difference automatic controller can slide in the guide groove on the H-shaped bracket to control the gap between the wire pressing plate and the fixing plate, so that it can better adapt to wires of different diameters and expand the scope of application.

[0028] By hingedly connecting the puller between the connecting rod B and the H-shaped bracket, the tension spring in the puller is deformed to pull back the sleeve rod, and the connecting rod B is driven by the tensioning action so that the wire pressing plate and the fixing plate can better clamp the wire. At the same time, the friction force on the wire is increased by using the clamping teeth in the arc-shaped wire groove, thereby further improving the clamping stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a front view of the backup protection device for live working conductors of the present invention.

[0030] Figure 2 It is a front three-dimensional structural schematic diagram of the backup protection device for live working conductors of the present invention.

[0031] Figure 3 It is a schematic diagram of the back three-dimensional structure of the backup protection device for live working conductors of the present invention.

[0032] Figure 4 for Figure 3 Right view of .

[0033] Figure 5 for Figure 3 Left view of .

[0034] As shown in the figure: 1. Mechanical hook; 2. Insulated safety rope; 3. Speed ​​difference automatic controller; 4. H-shaped bracket; 5. Main shaft; 6. Guide groove; 7. Y-shaped connecting rod; 8. Connecting rod A; 91. Wire pressing plate; 92. Fixed plate; 10. Connecting rod B; 11. Puller; 111. Sleeve; 112. Sleeve rod; 12. Anti-slip plate; 13. Arc wire groove; 14. Thread plate; 15. Weight reduction hole; 16. Pick. DETAILED DESCRIPTION

[0035] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0036] Embodiment 1: A backup protection device for live working conductors includes a bracket 4 with an H-shaped cross section and a speed difference automatic controller 3. The bracket 4 is provided with a plurality of weight-reducing holes 15, which are helpful for weight reduction and convenient for carrying and use. The safety rope of the speed difference automatic controller 3 is an insulating safety rope 2, which is used to improve the safety factor. The insulating safety rope 2 is connected to the pole cross arm through a mechanical hook 1 to adapt to the slightly stressed state of the insulating safety rope 2 under different tension lengths.

[0037] The two side elevations facing the bracket 4 are respectively provided with mutually parallel and opposite guide slots 6, and the speed difference automatic controller 3 is arranged between the two side elevations of the bracket 4, and the main shafts 5 respectively connected to the guide slots 6 are vertically connected on both sides of its shell, and the main shafts 5 can slide in the guide slots 6 to control the gap between the wire pressing plate 91 and the fixed plate 92; the bracket 4 is provided with a Y-shaped connecting rod 7 outside its two side elevations, and the open ends of the Y-shaped connecting rod 7 are respectively hinged with the main shafts 5 at both ends, and the top of the bracket 4 is connected with a horizontally arranged fixed plate 92 by bolts, and the wire pressing plate 91 is arranged opposite to the fixed plate 92 below, and the two sides facing the fixed plate 92 and the wire pressing plate 91 are respectively recessed with arc-shaped wire grooves 13 for accommodating wires, and the two arc-shaped wire grooves 13 are connected with tooth plates 14. The fixed plate 92 is rotatably installed with at least two anti-slip plates 12 on one side of the length direction of the arc-shaped wire groove 13, and the anti-slip plate 12 is connected with a paddle 16.

[0038] A connecting rod A8 and a connecting rod B10 are respectively hinged between the fixing plate 92 and the pressing plate 91, and the length of the connecting rod A8 is greater than that of the connecting rod B10. The lower end of the connecting rod A8 is hinged to the other end of the Y-shaped connecting rod 7, and the connecting rod B10 is hinged to a puller 11 between the hinged end thereof and the pressing plate 91 and the bracket 4.

[0039] The puller 11 includes a sleeve 111 and a sleeve rod 112 . The sleeve 111 is connected to the sleeve rod 112 via a tension spring. The end of the sleeve 111 is hinged to the bracket 4 . The end of the sleeve rod 112 is hinged to the hinged end of the connecting rod B10 and the wire pressing plate 91 .

[0040] The length of the guide slot 6 is greater than the maximum distance between the wire pressing plate 91 and the fixing plate 92 , so that the wire pressing plate 91 and the fixing plate 92 can be adapted to wires of different wire diameters.

[0041] The wire passes through the gap between the wire pressing plate 91 and the fixed plate 92. The main shaft 5 can slide in the guide groove 6 of the bracket 4 to control the gap between the wire pressing plate 91 and the fixed plate 92. The puller 11 drives the connecting rod B10 to make the wire pressing plate 91 and the fixed plate 92 better clamp the wire. The anti-drop plate effectively prevents the wire from falling off and maintains the overall force balance, which solves the high risk of adjusting the working position multiple times, repetitive and tedious actions, and other problems, thereby improving the safety level and the work quality and efficiency of live working.

[0042] Push the Y-shaped connecting rod 7 laterally, and at the same time, the main shafts 5 on both sides of the speed difference controller 3 move in the same direction. There is an appropriate gap between the wire pressing plate 91 and the fixed plate 92, and the wire can be put in from the side. The two anti-drop plates 12 are rotated and adjusted, and the wire can be firmly clamped to prevent it from falling off by clamping the wire pressing plate 91 and the fixed plate 92.

[0043] During operation, under normal circumstances, the deformation of the tension spring in the puller 11 is used to always apply tension to the connecting rod B10, so that the wire pressing plate 91 and the fixing plate 92 firmly clamp the wire and due to the existence of the speed difference controller 3, the insulating safety rope 2 is always under a slight stress state. At the same time, the operator avoids the high risk of adjusting the working position multiple times to adjust the backup protective insulating rope, and repeating tedious actions.

[0044] When the wire runs away, the speed and force of the wire running will be very large. Due to the existence of the speed difference automatic controller 3, the insulating safety rope 2 will always be in a state of slight stress, avoiding the risk of the insulating safety rope 2 breaking due to excessive relaxation. At the same time, it solves the problem that on-site construction workers are also subject to serious safety threats during the wire running process.

[0045] Embodiment 2: A method for using the backup protection device for live working conductors according to any one of claims 1 to 9, characterized in that it comprises the following steps: S1. Connect the mechanical hook at the end of the safety rope of the speed differential automatic controller to the cross arm of the pole; S2. The spindle slides in the guide groove of the bracket to move the wire pressing plate and the fixing plate away from each other, and the wire passes through the gap between the wire pressing plate and the fixing plate. The elastic effect of the tension spring inside the puller can drive the connecting rod B to make the wire pressing plate and the fixing plate approach each other and clamp the wire; S3. Rotate and adjust the anti-drop plate to clamp the wires in cooperation with the wire pressing plate and the fixing plate to prevent them from dropping out. S4. The tension spring is deformed in the puller to always apply tension to the connecting rod B. The wire pressing plate and the fixing plate clamp the wire and cooperate with the speed difference automatic controller. The safety rope is always in a state of slight stress and will not break due to excessive relaxation.

[0046] Of course, the above description is not limited to the above examples. Technical features not described in the present invention can be achieved by or by using existing technologies, which will not be described here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention, and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A backup protection device for live working conductors, characterized in that: The utility model comprises a bracket with an H-shaped cross section and a speed difference controller. The two side facades facing the bracket are respectively provided with mutually parallel and opposite guide through grooves. The speed difference controller is arranged between the two side facades of the bracket, and main shafts which are respectively slidably connected to the guide through grooves are vertically connected to the two sides of its shell. The bracket is provided with a Y-shaped connecting rod outside the two side facades. The open ends of the Y-shaped connecting rod are respectively hinged to the main shafts at both ends. The top of the bracket is connected with a horizontally arranged fixing plate by bolts. A wire pressing plate is arranged opposite to the fixing plate below. A connecting rod A and a connecting rod B are respectively hinged between the fixing plate and the wire pressing plate. The lower end of the connecting rod A is hinged to the other end of the Y-shaped connecting rod. A puller is hinged between the hinged end of the connecting rod B and the wire pressing plate and the bracket.

2. The backup protection device for live working conductor according to claim 1, characterized in that: The length of connecting rod A is greater than the length of connecting rod B.

3. The backup protection device for live working conductor according to claim 1, characterized in that: The two opposite sides of the fixing plate and the wire pressing plate are respectively concavely provided with arc-shaped wire grooves for accommodating wires.

4. The backup protection device for live working conductor according to claim 3, characterized in that: At least two anti-dropout plates are rotatably mounted on one side of the fixed plate in the length direction of the arc-shaped wire trough, and the anti-dropout plates are connected with paddles.

5. The backup protection device for live working conductor according to claim 3 or 4, characterized in that: The two arc-shaped wire grooves are both connected with clamping plates.

6. The backup protection device for live working conductor according to claim 1, characterized in that: The puller includes a sleeve and a sleeve rod. The sleeve is connected to the sleeve rod through a tension spring. The end of the sleeve is hinged to the bracket. The end of the sleeve rod is hinged to the connecting rod B and the hinged end of the wire pressing plate.

7. The backup protection device for live working conductor according to claim 1, characterized in that: The length of the guide through groove is greater than the maximum distance between the wire pressing plate and the fixing plate.

8. The backup protection device for live working conductor according to claim 1, characterized in that: The bracket is provided with weight-reducing holes.

9. The backup protection device for live working conductor according to claim 1, characterized in that: The safety rope of the speed differential controller is an insulating safety rope.

10. A method for using the backup protection device for live working conductors according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Connect the mechanical hook at the end of the safety rope of the speed differential automatic controller to the cross arm of the pole; S2. The spindle slides in the guide groove of the bracket to move the wire pressing plate and the fixing plate away from each other, and the wire passes through the gap between the wire pressing plate and the fixing plate. The elastic effect of the tension spring inside the puller can drive the connecting rod B to make the wire pressing plate and the fixing plate approach each other and clamp the wire; S3. Rotate and adjust the anti-drop plate to clamp the wires in cooperation with the wire pressing plate and the fixing plate to prevent them from dropping out. S4. The tension spring is deformed in the puller to always apply tension to the connecting rod B. The wire pressing plate and the fixing plate clamp the wire and cooperate with the speed difference automatic controller. The safety rope is always in a state of slight stress and will not break due to excessive relaxation.

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