Locking mechanism for safe hanging and pulling of ground wire on high voltage transmission line

Abstract

The application discloses a locking mechanism capable of realizing safe hanging and removing of a grounding wire on a high-voltage transmission line, and solves the technical problem of how to realize locking of operation behaviors violating operation procedures through a grounding wire hanging and connecting mechanism on site; if the operation of hanging a metal grounding hook (1) on the high-voltage line is performed first, since a first control circuit switch (11) is in a normally open state, a hook bottom end electromagnet coil (13) and a hook top end electromagnet coil (19) are still in a power-off state, a hook bottom end electromagnet magnetic suction block and a hook top end electromagnet magnetic suction block do not generate magnetic force, the metal grounding hook cannot be attracted to the epoxy resin insulation operating rod (2), and the operation of hanging the metal grounding hook on the high-voltage line cannot be performed directly; if the above sequence is violated, the operation procedure cannot be performed, and is mechanically locked, so that the sequence of correctly hanging and removing the grounding wire is ensured, and the life safety of high-altitude operation personnel is ensured.

Description

Technical Field

[0001] This invention relates to a high-voltage line grounding wire used during the maintenance of high-voltage transmission lines, and particularly to a locking mechanism that enables the safe hanging and detachment of the grounding wire on high-voltage transmission lines. Background Technology

[0002] Before performing maintenance and repair on high-voltage transmission lines, maintenance personnel must first install a grounding wire on each phase of the three-phase transmission line on the side of the transmission tower closest to the substation. This connects the three-phase transmission line to the tower, achieving a grounding short circuit to ensure the safety of maintenance personnel operating on the tower. When installing the grounding wire before a power outage, regulations require that the grounding end be installed first. That is, one end of the grounding wire must first be connected to the grounding plate on the grounding end of the tower body before the grounding hook is attached to the high-voltage transmission line. During the removal of the grounding wire, the grounding hook should be removed first. The hook must be removed from the high-voltage transmission line before one end of the grounding wire can be disconnected from the grounding plate on the tower body; this is to ensure the safety of the operators. However, during the connection and disconnection of the grounding wire on site, due to various reasons, operators sometimes violate the above operating procedures. Such operations pose a huge threat to the life safety of on-site maintenance personnel. How to use the on-site operating mechanism to lock in the operation that violates the operating procedures and objectively and effectively protect the life safety of the workers is a difficult problem that needs to be solved on site.

[0003] The existing high-voltage line grounding rods are integrated grounding rods, meaning that a metal grounding hook is fixedly installed at the top of a long, rod-shaped insulated rod. A grounding copper wire is connected to the grounding hook. The entire grounding rod weighs about ten kilograms and is several meters long. The metal grounding hook is U-shaped, and a spring clip with elasticity is installed in the U-shape to hold the wire. After the U-shaped hook is hooked onto the wire, the wire is fixedly connected to the hook body by the spring clip. The on-site operation steps are as follows: First, the operator carries the long, rod-shaped grounding rod and climbs to a certain phase of the transmission line on the tower. At the corresponding grounding point, connect the lower end of the grounding copper wire on the insulating rod (connected to the grounding hook) to the corresponding grounding point on the iron tower. Finally, holding the insulating rod, bring the grounding hook at the end of the insulating rod close to the transmission line of that phase and hook the U-shaped hook onto the transmission line, thus completing the grounding short-circuit work for that phase of the transmission line. Since the transmission line on the tower is a three-phase AC line, after the line-hanging personnel have finished hanging the line for that phase, they need to climb down from the tower to the ground, then carry a second insulating rod back up the tower to continue the work. This process needs to be repeated three times to complete the grounding of the three-phase transmission line. The work of connecting grounding wires is a challenge. Reducing the labor intensity and improving efficiency of the connection work is a problem that needs to be addressed on-site. Furthermore, due to the different tower types, the grounding point of the corresponding line on some towers is below the line being connected, while on others it is above. When the line being connected is above the line, the operator on the tower lifts the insulating rod upwards and then hooks the metal hook at the top of the rod onto the line, with the U-shaped metal hook opening downwards. On the power line, the metal hook, relying on its own weight, hangs on the line, which can basically achieve a reliable electrical connection between the hook and the conductor. However, when the line is below the operating point, the operator can only hang the grounding hook with the U-shaped opening facing upwards in the opposite direction on the power line. At this time, the weight of the metal hook can become a hidden danger of the hook detaching from the conductor. At the same time, the reverse hanging method with the U-shaped opening facing upwards can also easily cause unreliable electrical connection between the grounding hook and the power transmission conductor, and even cause the hook to fall off, resulting in failure of power line grounding, which seriously threatens the life safety of the on-site operators. Summary of the Invention

[0004] This invention provides a locking mechanism that enables the safe attachment and removal of grounding wires on high-voltage transmission lines, solving the technical problem of how to lock out operational behaviors that violate operating procedures through on-site grounding wire attachment mechanisms.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] The overall concept of this invention is as follows: The grounding wire connection mechanism is designed as a split-combination structure, that is, the metal grounding hook and the epoxy resin insulated operating rod are separated into two parts, and the connection between the metal grounding hook and the epoxy resin insulated operating rod is designed as a magnetic attraction, so as to facilitate the assembly and disassembly of the metal grounding hook and the epoxy resin insulated operating rod by the operator at a high position on the tower; an electromagnet block is set at the bottom or top of the metal grounding hook, and the lower end of the grounding copper wire is connected to a U-shaped metal frame. The grounding copper wire is connected to the metal grounding plate on the grounding end of the tower body through the U-shaped metal frame; a magnetic attraction block for the electromagnet is set on the inner side of the arc of the U-shaped metal frame; a normally open first control circuit switch is set between the two parallel sides of the U-shaped metal frame, and a switch on button is set above the first control circuit switch. A manual rotating set screw is set on the U-shaped metal frame above the button; a normally open second control circuit switch is set in the wire hanging groove of the metal grounding hook; the electromagnet inside the U-shaped metal frame is connected to the magnetic attraction block of the electromagnet inside the U-shaped metal frame. After the coil is connected in series with the normally open second control circuit switch, it is connected in parallel to the two ends of the power battery that controls the electromagnet to be energized or de-energized. The coil on the electromagnet block set at the bottom or top of the metal grounding hook is first connected in parallel, then connected in series with the normally open first control circuit switch, and then connected in parallel to the two ends of the power battery that controls the electromagnet to be energized or de-energized. First, the U-shaped metal frame is sleeved together with the metal grounding plate, and then the U-shaped metal frame is pressed together with the metal grounding plate by rotating the manual set screw. At this time, the switch contact in the normally open first control circuit switch is pressed down, closing the first control circuit switch, so that the electromagnet block set at the bottom or top of the metal grounding hook is energized and generates magnetic force. Then, the metal grounding hook and the permanent magnet block at the top of the epoxy resin insulated operating rod are attracted together by magnetic force, so that the operation of hanging the metal grounding hook on the high-voltage line can be carried out. That is to say, only after the U-shaped metal frame is first connected to the metal grounding plate can the combination work of the metal grounding hook and the epoxy resin insulated operating rod be carried out, and only then can the operation of hanging the metal grounding hook on the high-voltage line be carried out.When the metal grounding hook is attached to the high-voltage line, the high-voltage line enters the transmission line locking groove of the metal grounding hook. At this time, the transmission line presses down the switch contact in the normally open second control circuit switch. The coil circuit on the electromagnet magnetic block inside the U-shaped metal frame, located on the inner arc of the U-shaped metal frame, is connected, causing the electromagnet magnetic block inside the U-shaped metal frame to generate magnetic force. This magnetic force firmly attracts the U-shaped metal frame to the metal grounding plate on the tower. Even after loosening the manual set screw on the U-shaped metal frame, it cannot be removed from the metal grounding plate. Only after the metal hook is removed from the high-voltage line, releasing the pressure of the high-voltage line on the switch contact in the second control circuit, de-energizing the coil on the electromagnet's magnetic block inside the U-shaped metal clip, and causing the electromagnet's magnetic block inside the U-shaped metal frame to lose its magnetic force, can the U-shaped metal frame be separated from the metal grounding plate. This achieves the goal of requiring the metal grounding hook to be removed from the high-voltage line before the U-shaped metal frame can be removed from the metal grounding plate. This invention, through the switching of the power supply to the coil on the electromagnet, creatively achieves a lockout against violations of the grounding wire installation procedure, ensuring the safety of the operator.

[0007] A locking mechanism for safely attaching and detaching grounding wires on high-voltage transmission lines includes a metal grounding hook, a retractable epoxy resin insulated operating rod, a metal grounding plate on the grounding end of the tower body, and a grounding copper wire. Within the U-shaped hook body of the metal grounding hook, an eight-shaped elastic latch is provided. A transmission line clamping groove is provided between the top of the eight-shaped elastic latch and the U-shaped hook body. The upper end of the grounding copper wire is connected to the metal grounding hook, and the lower end of the grounding copper wire is connected to a U-shaped metal frame. At the lower right end of the U-shaped hook body, a hook bottom electromagnet magnetic block is provided, and a hook bottom electromagnet coil is provided on the hook bottom electromagnet magnetic block. On the outer surface of the top of the U-shaped hook body, a hook top electromagnet magnetic block is provided, and a hook top electromagnet coil is provided on the hook top electromagnet magnetic block. The U-shaped metal frame... On the inner arc surface of the frame, there is a U-shaped metal frame with an electromagnet magnetic block. On the U-shaped metal frame with the electromagnet magnetic block, there is an electromagnet coil. Between the two parallel sides of the U-shaped metal frame, there is a normally open first control circuit switch. Above the first control circuit switch, there is a switch on button. On the U-shaped metal frame above the switch on button, there is a manual set screw hole. A manual set screw is screwed into the manual set screw hole. In the power line clamping groove, there is a normally open second control circuit switch. The electromagnet coil in the U-shaped metal frame is connected in series with the second control circuit switch and then connected to the positive and negative terminals of the power battery. The electromagnet coil at the bottom of the hook and the electromagnet coil at the top of the hook are first connected in parallel, and then connected in series with the first control circuit switch and then connected to the positive and negative terminals of the power battery.

[0008] On the right side of the top surface of the electromagnet magnetic block at the top of the hook, there is an upper horizontal ring release; on the right side of the bottom surface of the electromagnet magnetic block at the bottom of the hook, there is a lower horizontal ring release; on the top surface of the epoxy resin insulated operating rod, there is a fixed permanent magnet magnetic block at the upper end of the insulating rod, and on the right side of the top surface of the permanent magnet magnetic block at the upper end of the insulating rod, there is a connecting post; the upper end of the epoxy resin insulated operating rod is connected to the lower right end of the U-shaped hook body by the magnetic attraction between the permanent magnet magnetic block at the upper end of the insulating rod and the electromagnet magnetic block at the bottom of the hook, and the connecting post is inserted into the lower horizontal ring release.

[0009] An elastic support rod for the latch is provided between the figure-eight shaped elastic latch and the inner side of the U-shaped hook.

[0010] An expansion joint is provided in the middle of the epoxy resin insulated operating rod; an insulated handle sleeve is provided at the lower end of the epoxy resin insulated operating rod.

[0011] A locking method for safely attaching and detaching grounding wires on high-voltage transmission lines includes a metal grounding hook, a retractable epoxy resin insulated operating rod, a metal grounding plate on the grounding end of the tower body, and a grounding copper wire. Within the U-shaped hook body of the metal grounding hook, an eight-shaped elastic latch is provided. A transmission line clamping groove is provided between the top of the eight-shaped elastic latch and the U-shaped hook body. The upper end of the grounding copper wire is connected to the metal grounding hook, and the lower end of the grounding copper wire is connected to a U-shaped metal frame. A hook bottom electromagnet magnetic block is fixedly installed at the lower right end of the U-shaped hook body, and a hook bottom electromagnet coil is installed on the hook bottom electromagnet magnetic block. A hook top electromagnet magnetic block is fixedly installed on the outer surface of the top of the U-shaped hook body, and a hook top electromagnet coil is installed on the hook top electromagnet magnetic block. Within the U-shaped metal frame... On the arc-shaped surface, a U-shaped metal frame with an electromagnet magnetic block is provided. An electromagnet coil within the U-shaped metal frame is located on the electromagnet magnetic block. Between the two parallel sides of the U-shaped metal frame, a normally open first control circuit switch is provided. Above the first control circuit switch, a switch-on button is provided. A manual set screw threaded hole is provided on the U-shaped metal frame above the switch-on button, and a manual set screw is screwed into the manual set screw threaded hole. A normally open second control circuit switch is provided in the power line clamping groove. The electromagnet coil within the U-shaped metal frame is connected in series with the second control circuit switch and then connected to the positive and negative terminals of the power battery. The electromagnet coil at the bottom of the hook and the electromagnet coil at the top of the hook are first connected in parallel, then connected in series with the first control circuit switch and finally connected to the positive and negative terminals of the power battery. The feature is characterized by the following steps:

[0012] If the U-shaped metal frame is first fitted together with the metal grounding plate, and then the U-shaped metal frame is pressed together with the metal grounding plate by rotating the manual set screw, the switch contact in the normally open first control circuit switch is pressed down, closing the first control circuit switch, so that the electromagnet magnetic block at the bottom of the hook or the electromagnet magnetic block at the top of the hook of the metal grounding hook is energized and generates magnetic force. At this time, the metal grounding hook and the epoxy resin insulated operating rod can be magnetically attracted together, so that the operation of hanging the metal grounding hook on the high voltage line can be carried out.

[0013] If the operation of connecting the metal grounding hook to the high-voltage line needs to be performed first, since the first control circuit switch is in the normally open state, the electromagnet coil at the bottom of the hook and the electromagnet coil at the top of the hook are still in the de-energized state. Neither the magnetic attraction block at the bottom of the hook nor the magnetic attraction block at the top of the hook generates magnetic force, so the metal grounding hook cannot be attracted to the epoxy resin insulated operating rod, directly resulting in the inability to connect the metal grounding hook to the high-voltage line.

[0014] When the metal grounding hook is attached to the high-voltage transmission line, the high-voltage transmission line presses down the normally open contact of the second control circuit switch, causing the second control circuit switch to be in the closed state, resulting in the electromagnet coil inside the U-shaped metal frame.

[0015] If the epoxy resin insulated operating rod and the metal grounding hook are combined by the attraction between the permanent magnet magnetic block at the top of the insulating rod and the electromagnet magnetic block at the bottom of the hook, or by the attraction between the permanent magnet magnetic block at the top of the insulating rod and the electromagnet magnetic block at the top of the hook, the metal grounding hook can be removed from the high-voltage transmission line. After the metal grounding hook is removed from the high-voltage transmission line, the pressure of the normally open contact of the second control circuit switch on the high-voltage transmission line is released, the second control circuit switch is opened, the electromagnet coil inside the U-shaped metal frame is de-energized, and the electromagnet magnetic block inside the U-shaped metal frame loses its magnetism. Then, the manual set screw is loosened, and the U-shaped metal frame can be removed from the metal grounding plate.

[0016] If you want to remove the U-shaped metal frame from the metal grounding plate, even if you can loosen the manual set screw, the metal grounding hook is still attached to the high-voltage transmission line. At this time, the second control circuit switch is closed, the electromagnet coil inside the U-shaped metal frame is still energized, and the magnetic attraction block of the electromagnet inside the U-shaped metal frame has magnetic attraction. The U-shaped metal frame is tightly attached to the metal grounding plate, making it impossible to remove the U-shaped metal frame from the metal grounding plate.

[0017] This invention prioritizes connecting the grounding terminal of the tower before connecting the grounding wire to the high-voltage line, achieving a mechanical interlock of connecting the grounding terminal first and then the conductor end. After the grounding wire is connected to the high-voltage line, the metal hook must be removed from the high-voltage line before the grounding terminal on the tower can be removed. If the above sequence is violated, the operation procedure cannot be carried out and is mechanically locked, ensuring the correct sequence of connecting and removing the grounding wire and guaranteeing the life safety of personnel working at heights. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the epoxy resin insulated operating rod 2 and the metal grounding hook 1 when they are connected in a forward combination according to the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the metal grounding hook 1 of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the epoxy resin insulated operating rod 2 of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the epoxy resin insulated operating rod 2 of the present invention when it rotates away from the metal grounding hook 1;

[0022] Figure 5 This is a schematic diagram of the structure of the epoxy resin insulated operating rod 2 and the metal grounding hook 1 when they are connected in reverse combination according to the present invention;

[0023] Figure 6 This is a schematic diagram of the operation when the grounding wire is hung upward at point 8 on the grounding tower.

[0024] Figure 7 This is a schematic diagram of the operation when the grounding wire is hung downwards at point 8 on the grounding tower.

[0025] Figure 8 It is a schematic diagram of the U-shaped metal frame structure, the metal grounding hook structure, and the electrical connection structure between the two;

[0026] Figure 9 This is a schematic diagram of the circuit structure for controlling the gain and loss of power in the upper coil of the electromagnet according to the present invention. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings:

[0028] A locking mechanism for safely attaching and detaching grounding wires on high-voltage transmission lines includes a metal grounding hook 1, a retractable epoxy resin insulated operating rod 2, a metal grounding plate 14 on the grounding end of the tower body, and a grounding copper wire 3. A figure-eight elastic latch 102 is provided inside the U-shaped hook body 101 of the metal grounding hook 1. A transmission line clamping groove 109 is provided between the top of the figure-eight elastic latch 102 and the U-shaped hook body 101. The upper end of the grounding copper wire 3 is connected to the metal grounding hook 109. On the grounding hook 1, a U-shaped metal frame 15 is connected to the lower end of the grounding copper wire 3. At the lower right end of the U-shaped hook body 101, a hook bottom electromagnet magnetic block 103 is provided. On the hook bottom electromagnet magnetic block 103, a hook bottom electromagnet coil 13 is provided. On the outer side of the top of the U-shaped hook body 101, a hook top electromagnet magnetic block 108 is provided. On the hook top electromagnet magnetic block 108, a hook top electromagnet coil 19 is provided. On the inner arc surface of the U-shaped metal frame 15, there is a U-shaped metal frame internal electromagnet magnetic block 18, and on the U-shaped metal frame internal electromagnet magnetic block 18, there is a U-shaped metal frame internal electromagnet coil 12; between the two parallel sides of the U-shaped metal frame, there is a normally open first control circuit switch 11, above the first control circuit switch 11, there is a switch on button, above the switch on button, there is a manual set screw screw hole 16, and a manual set screw 17 is screwed into the manual set screw screw hole 16; in the power line clamping groove 109, there is a normally open second control circuit switch 10; the U-shaped metal frame internal electromagnet coil 12 and the second control circuit switch 10 are connected in series and then connected to the positive and negative terminals of the power battery 9; the bottom electromagnet coil 13 and the top electromagnet coil 19 of the hook are first connected in parallel, and then connected in series with the first control circuit switch 11 and then connected to the positive and negative terminals of the power battery 9.

[0029] On the right side of the top surface of the electromagnet magnetic block 108 at the top of the hook, an upper horizontal ring release 104 is provided; on the right side of the bottom surface of the electromagnet magnetic block 103 at the bottom of the hook, a lower horizontal ring release 107 is provided; on the top surface of the epoxy resin insulated operating rod 2, an upper permanent magnet magnetic block 201 is fixedly provided, and on the right side of the top surface of the upper permanent magnet magnetic block 201, a connecting post 203 is provided; the upper end of the epoxy resin insulated operating rod 2 is connected to the lower right end of the U-shaped hook body 101 by the magnetic attraction of the upper permanent magnet magnetic block 201 and the electromagnet magnetic block 103 at the bottom of the hook, and the connecting post 203 is inserted into the lower horizontal ring release 107.

[0030] A locking method for safely attaching and detaching grounding wires on high-voltage transmission lines includes a metal grounding hook 1, a retractable epoxy resin insulated operating rod 2, a metal grounding plate 14 on the grounding end of the tower body, and a grounding copper wire 3. A figure-eight elastic latch 102 is provided inside the U-shaped hook body 101 of the metal grounding hook 1. A transmission line clamping groove 109 is provided between the top of the figure-eight elastic latch 102 and the U-shaped hook body 101. The upper end of the grounding copper wire 3 is connected to the metal grounding... On hook 1, a U-shaped metal frame 15 is connected to the lower end of the grounding copper wire 3. A hook bottom electromagnet magnetic block 103 is fixedly installed at the lower right end of the U-shaped hook body 101. A hook bottom electromagnet coil 13 is installed on the hook bottom electromagnet magnetic block 103. On the outer surface of the top of the U-shaped hook body 101, a hook top electromagnet magnetic block 108 is fixedly installed. A hook top electromagnet coil 19 is installed on the hook top electromagnet magnetic block 108. On the inner arc surface of the U-shaped metal frame 15, a U-shaped metal frame electromagnet magnetic block 18 is provided, and a U-shaped metal frame electromagnet coil 12 is provided on the U-shaped metal frame electromagnet magnetic block 18; a normally open first control circuit switch 11 is provided between the two parallel sides of the U-shaped metal frame, and a switch on button is provided above the first control circuit switch 11; a manual set screw screw hole 16 is provided on the U-shaped metal frame above the switch on button, and a manual set screw 17 is screwed into the manual set screw screw hole 16; a normally open second control circuit switch 10 is provided in the power line clamping groove 109; the U-shaped metal frame electromagnet coil 12 and the second control circuit switch 10 are connected in series and then connected to the positive and negative terminals of the power battery 9; the bottom electromagnet coil 13 and the top electromagnet coil 19 of the hook are first connected in parallel, and then connected in series with the first control circuit switch 11 and then connected to the positive and negative terminals of the power battery 9; the characteristic is the following steps:

[0031] If the U-shaped metal frame is first connected to the metal grounding plate 14, and then the U-shaped metal frame is pressed together with the metal grounding plate 14 by rotating the manual set screw 17, at this time, the switch contact in the normally open first control circuit switch 11 is pressed down, closing the first control circuit switch 11, so that the electromagnet magnetic block 103 at the bottom of the hook of the metal grounding hook 1 or the electromagnet magnetic block 108 at the top of the hook is energized and generates magnetic force. At this time, the metal grounding hook 1 and the epoxy resin insulated operating rod 2 can be magnetically attracted together, so that the operation of hanging the metal grounding hook 1 on the high-voltage line can be carried out.

[0032] If the operation of connecting the metal grounding hook 1 to the high-voltage line is to be performed first, since the first control circuit switch 11 is in the normally open state, the electromagnet coil 13 at the bottom of the hook and the electromagnet coil 19 at the top of the hook are still in the de-energized state. The magnetic attraction block 103 at the bottom of the hook and the magnetic attraction block 108 at the top of the hook do not generate magnetic force, so the metal grounding hook 1 cannot be attracted to the epoxy resin insulated operating rod 2, which directly leads to the inability to connect the metal grounding hook 1 to the high-voltage line.

[0033] When the metal grounding hook 1 is attached to the high-voltage transmission line, the high-voltage transmission line presses down the normally open contact of the second control circuit switch 10, so that the second control circuit switch 10 is in the closed state, causing the electromagnet coil 12 in the U-shaped metal frame to be activated.

[0034] If the epoxy resin insulated operating rod 2 and the metal grounding hook 1 are combined by the attraction of the permanent magnet magnetic block 201 at the upper end of the insulating rod and the electromagnet magnetic block 103 at the bottom of the hook, or by the attraction of the permanent magnet magnetic block 201 at the upper end of the insulating rod and the electromagnet magnetic block 108 at the top of the hook, the metal grounding hook 1 can be removed from the high-voltage transmission line. After the metal grounding hook 1 is removed from the high-voltage transmission line, the pressure of the high-voltage transmission line on the normally open contact of the second control circuit switch 10 is released, the second control circuit switch 10 is opened, the electromagnet coil 12 in the U-shaped metal frame is de-energized, the electromagnet magnetic block 18 in the U-shaped metal frame loses its magnetism, and then the manual set screw 17 is loosened, the U-shaped metal frame 15 can be removed from the metal grounding plate 14.

[0035] If the U-shaped metal frame 15 is to be removed from the metal grounding plate 14, although the manual set screw 17 can be loosened, the metal grounding hook 1 is still attached to the high-voltage transmission line. At this time, the second control circuit switch 10 is in the closed state, the electromagnet coil 12 inside the U-shaped metal frame is still in the energized state, and the electromagnet magnetic block 18 inside the U-shaped metal frame has magnetic attraction. The U-shaped metal frame 15 is tightly attracted to the metal grounding plate 14, making it impossible to remove the U-shaped metal frame 15 from the metal grounding plate 14.

[0036] A combined telescopic grounding rod for reliable grounding of high-voltage transmission lines includes a metal grounding hook 1, a telescopic epoxy resin insulated operating rod 2, and a grounding copper wire 3. Inside the U-shaped hook body 101 of the metal grounding hook 1, an eight-shaped elastic latch 102 is provided. Between the top of the eight-shaped elastic latch 102 and the U-shaped hook body 101, a transmission line engaging groove 109 is provided. On the outer surface of the top of the U-shaped hook body 101, a hook top electromagnet magnetic block 108 is fixedly installed. On the right side of the top surface of the hook top electromagnet magnetic block 108, an upper horizontal circular ring release 104 is fixedly installed. On the lower right end of the U-shaped hook body 101, a hook bottom electromagnet magnetic block 103 is fixedly installed. On the right side of the lower bottom surface of the hook bottom electromagnet magnetic block 103, a lower horizontal circular ring release 107 is fixedly installed. On the top surface of the epoxy resin insulated operating rod 2, a... An insulating rod is equipped with a permanent magnet magnetic suction block 201 at the upper end. A connecting post 203 is fixedly installed on the right side of the top surface of the permanent magnet magnetic suction block 201 at the upper end of the insulating rod. The upper end of the epoxy resin insulating operating rod 2 is connected to the lower right end of the U-shaped hook body 101 by the attraction of the permanent magnet magnetic suction block 201 at the upper end of the insulating rod and the electromagnet magnetic suction block 103 at the bottom end of the hook. The connecting post 203 is inserted into the lower horizontal ring release 107. Since the epoxy resin insulating operating rod 2 and the metal grounding hook 1 are designed as separate units, the on-site operator can put the three metal grounding hooks into a bag and only need to carry one epoxy resin insulating operating rod 2 to climb the iron tower to complete the grounding connection work of the three-phase transmission line. After the operator climbs the iron tower, he will combine the three metal grounding hooks he carries with the epoxy resin insulating operating rod 2 in turn to perform the grounding connection work of the three-phase transmission line.

[0037] On the outer side of the lower right end of the U-shaped hook 101, a grounding copper wire connecting bolt 106 is provided, and a grounding copper wire 3 is connected to the grounding copper wire connecting bolt 106. When the U-shaped hook 101 is hung on the power transmission line, the power transmission line is snapped into the power transmission line snapping groove 109, realizing the electrical connection between the power transmission line and the metal grounding hook 1. The metal grounding hook 1 is then electrically connected to the iron tower through the grounding copper wire 3 connected to the grounding copper wire connecting bolt 106, realizing the connection between the power transmission line and the earth, thereby realizing the grounding of the power transmission line.

[0038] Between the figure-eight elastic latch 102 and the inner side of the U-shaped hook 101, there is a latch elastic support rod 105 to achieve a reliable connection between the figure-eight elastic latch 102 and the power transmission line entering the power transmission line latching groove 109, and at the same time to prevent the metal grounding hook 1 from detaching from the power transmission line.

[0039] An expansion joint 202 is provided in the middle of the epoxy resin insulated operating rod 2, through which the epoxy resin insulated operating rod 2 can be extended or shortened; an insulating handle sleeve 204 is provided at the lower end of the epoxy resin insulated operating rod 2 to facilitate the operator's grip and operation.

[0040] A combined telescopic grounding rod for reliably grounding high-voltage transmission lines includes a metal grounding hook 1, a telescopic epoxy resin insulated operating rod 2, and a grounding copper wire 3. Inside the U-shaped hook body 101 of the metal grounding hook 1, an eight-shaped elastic latch 102 is provided. Between the top of the eight-shaped elastic latch 102 and the U-shaped hook body 101, a transmission line engaging groove 109 is provided. On the outer surface of the top of the U-shaped hook body 101, a hook-top electromagnet magnetic block 108 is fixedly installed. On the right side of the top surface of the hook-top electromagnet magnetic block 108, an upper horizontal circular release 104 is fixedly installed. At the lower right end of the U-shaped hook body 101, a hook-bottom electromagnet magnetic block 103 is fixedly installed. On the right side of the lower bottom surface of the hook-bottom electromagnet magnetic block 103, a lower horizontal circular release 107 is fixedly installed. The grounding rod is constructed using epoxy resin insulation. On the top surface of the operating rod 2, a permanent magnet magnetic suction block 201 is fixedly installed at the upper end of the insulating rod. On the right side of the top surface of the permanent magnet magnetic suction block 201 at the upper end of the insulating rod, a connecting post 203 is fixedly installed. The upper end of the epoxy resin insulating operating rod 2 is connected to the top of the U-shaped hook 101 by the attraction of the permanent magnet magnetic suction block 201 at the upper end of the insulating rod and the electromagnet magnetic suction block 108 at the top of the hook. The connecting post 203 is inserted into the upper horizontal ring release 104. When the line is below the operating point 8 on the grounding tower, the metal grounding hook 1 and the epoxy resin insulating operating rod 2 are connected in reverse to ensure that after the operating rod is extended downward, the U-shaped opening of the metal grounding hook 1 can be smoothly hung on the transmission line downward. At this time, the metal grounding hook 1 can be reliably electrically connected to the transmission line by its own weight.

[0041] A method for attaching a combined grounding rod for reliably grounding a high-voltage transmission line includes a metal grounding hook 1, a retractable epoxy resin insulated operating rod 2, a grounding copper wire 3, a transmission tower 4, a substation 5, and an operating point 8 on the grounding tower. An upper transmission line 6 and a lower transmission line 7 are connected between the transmission tower 4 and the substation 5, respectively. The upper transmission line 6 is positioned above the operating point 8 on the grounding tower, and the lower transmission line 7 is positioned below the operating point 8. An eight-shaped elastic latch 102 is provided inside the U-shaped hook 101 of the metal grounding hook 1, and a transmission line clamping groove 1 is provided between the top of the eight-shaped elastic latch 102 and the U-shaped hook 101. 09. A hook top electromagnet magnetic block 108 is fixedly installed on the outer surface of the top of the U-shaped hook body 101. An upper horizontal ring release 104 is fixedly installed on the right side of the top surface of the hook top electromagnet magnetic block 108. A hook bottom electromagnet magnetic block 103 is fixedly installed at the lower right end of the U-shaped hook body 101. A lower horizontal ring release 107 is fixedly installed on the right side of the lower bottom surface of the hook bottom electromagnet magnetic block 103. A permanent magnet magnetic block 201 is fixedly installed on the top surface of the epoxy resin insulated operating rod 2. A connecting post 203 is fixedly installed on the right side of the top surface of the permanent magnet magnetic block 201. The feature is the following steps:

[0042] Step 1: At operation point 8 on the grounding tower, combine the first metal grounding hook 1 with the epoxy resin insulated operating rod 2. That is, attach the upper end of the insulating rod of the epoxy resin insulated operating rod 2 to the lower end of the hook of the first metal grounding hook 1 to obtain a combined grounding rod with grounding wire connection.

[0043] The second step is to lift the combined grounding rod upwards, hook the U-shaped hook 101 onto the upper transmission line 6, and make the upper transmission line 6 snap into the transmission line snap groove 109.

[0044] The third step is to rotate the epoxy resin insulated operating rod 2. The connecting column 203 on the epoxy resin insulated operating rod 2 uses the lower horizontal ring release 107 as the fulcrum to overcome the magnetic attraction between the electromagnet magnetic block 103 at the bottom of the hook and the permanent magnet magnetic block 201 at the top of the insulating rod, so that the epoxy resin insulated operating rod 2 is disengaged from the first metal grounding hook 1, and the grounding wire of the upper transmission line 6 is connected.

[0045] Step 4: Retract the epoxy resin insulated operating rod 2. At the operating point 8 on the grounding tower, combine the second metal grounding hook with the epoxy resin insulated operating rod 2. That is, attract the permanent magnet magnetic block 201 at the upper end of the insulating rod of the epoxy resin insulated operating rod 2 with the electromagnet magnetic block 108 at the top of the hook on the second metal grounding hook. This results in a combined grounding rod with the metal grounding hook 1 reversedly connected to the top of the epoxy resin insulated operating rod 2.

[0046] Fourth step: By extending the newly assembled combined grounding rod downwards, the U-shaped hook 101 on the second metal grounding hook is pressed onto the lower transmission line 7, and the lower transmission line 7 is snapped into the transmission line snapping groove 109, thus realizing the positive hanging of the second metal grounding hook on the lower transmission line 7 in the form of U-shaped opening downwards.

[0047] Step 5: Rotate the epoxy resin insulated operating rod 2. The connecting post 203 on the epoxy resin insulated operating rod 2 uses the upper horizontal ring release 104 as a fulcrum to overcome the magnetic attraction between the permanent magnet magnetic block 108 at the top of the hook and the electromagnet magnetic block 201 at the upper end of the insulating rod, so that the rotating epoxy resin insulated operating rod 2 is disengaged from the second metal grounding hook, thereby completing the grounding wire connection operation of the lower transmission line 7.

[0048] On the outer side of the lower right end of the U-shaped hook 101, a grounding copper wire connecting bolt 106 is provided. The upper end of the grounding copper wire 3 is connected to the grounding copper wire connecting bolt 106. Before the metal grounding hook 1 is hung on the power transmission line, the lower end of the grounding copper wire 3 connected to the metal grounding hook 1 must be connected to the grounding point on the power transmission tower 4.

Claims

1. A locking mechanism for safely attaching and detaching grounding wires on high-voltage transmission lines, comprising a metal grounding hook (1), a retractable epoxy resin insulated operating rod (2), a metal grounding plate (14) on the grounding end of the tower body, and a grounding copper wire (3), wherein an eight-shaped elastic latch (102) is provided inside the U-shaped hook body (101) of the metal grounding hook (1), and a transmission line clamping groove (109) is provided between the top of the eight-shaped elastic latch (102) and the U-shaped hook body (101), the upper end of the grounding copper wire (3) is connected to the metal grounding hook (1), and a U-shaped metal frame (15) is connected to the lower end of the grounding copper wire (3), characterized in that, At the lower right end of the U-shaped hook (101), a hook bottom electromagnet magnetic block (103) is provided, and a hook bottom electromagnet coil (13) is provided on the hook bottom electromagnet magnetic block (103). On the outer surface of the top of the U-shaped hook (101), a hook top electromagnet magnetic block (108) is provided, and a hook top electromagnet coil (19) is provided on the hook top electromagnet magnetic block (108). On the inner arc surface of the U-shaped metal frame (15), a U-shaped metal frame inner electromagnet magnetic block (18) is provided, and a U-shaped metal frame inner electromagnet coil (12) is provided on the U-shaped metal frame inner electromagnet magnetic block (18). Between the two parallel sides of the U-shaped metal frame, a normally open first... A control circuit switch (11) is provided above the first control circuit switch (11). A switch on button is provided on the U-shaped metal frame above the switch on button. A manual set screw screw hole (16) is provided on the U-shaped metal frame above the switch on button. A manual set screw (17) is screwed into the manual set screw screw hole (16). A normally open second control circuit switch (10) is provided in the power line clamping groove (109). The electromagnet coil (12) in the U-shaped metal frame is connected in series with the second control circuit switch (10) and then connected to the positive and negative terminals of the power battery (9). The electromagnet coil (13) at the bottom of the hook and the electromagnet coil (19) at the top of the hook are first connected in parallel, and then connected in series with the first control circuit switch (11) and then connected to the positive and negative terminals of the power battery (9).

2. The locking mechanism for safely attaching and detaching grounding wires on high-voltage transmission lines according to claim 1, characterized in that, On the right side of the top surface of the electromagnet magnetic block (108) at the top of the hook, there is an upper horizontal ring release (104); on the right side of the bottom surface of the electromagnet magnetic block (103) at the bottom of the hook, there is a lower horizontal ring release (107); on the top surface of the epoxy resin insulated operating rod (2), there is a fixed permanent magnet magnetic block (201) at the top end of the insulating rod, and on the right side of the top surface of the permanent magnet magnetic block (201) at the top end of the insulating rod, there is a connecting post (203); the upper end of the epoxy resin insulated operating rod (2) is connected to the lower right end of the U-shaped hook body (101) by the magnetic attraction of the permanent magnet magnetic block (201) at the top end of the insulating rod and the electromagnet magnetic block (103) at the bottom of the hook, and the connecting post (203) is inserted into the lower horizontal ring release (107).

3. A locking mechanism for safely attaching and detaching grounding wires on high-voltage transmission lines according to claim 1 or 2, characterized in that, An elastic support rod (105) for the latch is provided between the figure-eight elastic latch (102) and the inner side of the U-shaped hook (101).

4. A locking mechanism for safely attaching and detaching grounding wires on high-voltage transmission lines according to claim 1 or 2, characterized in that, An expansion joint (202) is provided in the middle of the epoxy resin insulated operating rod (2); an insulated handle sleeve (204) is provided at the lower end of the epoxy resin insulated operating rod (2).

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