CN-115764353-B - Locking mechanism capable of realizing safe hanging and detaching of grounding wire on high-voltage transmission line

Abstract

The invention discloses a locking mechanism capable of realizing safe hanging and detaching of an earth wire on a high-voltage transmission line, which solves the technical problem of locking operation behaviors violating operation regulations by an on-site earth wire hanging mechanism, and if the operation of hanging a metal earth hook (1) on the high-voltage line is required, the operation of hanging and detaching the earth wire correctly is ensured because a first control circuit switch (11) is in a normally open state and a hook bottom electromagnet coil (13) and a hook top electromagnet coil (19) are still in a power-off state, and a hook bottom electromagnetic ferromagnetic suction block and a hook top electromagnetic ferromagnetic suction block (both generate no magnetic force, so that the metal earth hook and an epoxy resin insulating operation rod (2) cannot be attracted, the operation of hanging the metal earth hook on the high-voltage line cannot be directly caused, and if the operation procedures are violating the sequence, the operation procedures cannot be mechanically locked, so that the life safety of high-altitude operators is ensured.

Inventors

• YAO LIANGAN
• LI YUJIE
• LI DING
• LIU JUN
• QIAO WEIZHEN
• XIE QIANG
• REN HAIPING
• SHI JINGJIA
• WANG CHUN
• DU JUAN
• PAN YIFEI

Assignees

• 国网山西省电力公司晋中供电公司

Dates

Publication Date

20260508

Application Date

20221120

Claims (4)

1. 1. The locking mechanism capable of realizing safe hanging and dismantling of the grounding wire on the high-voltage transmission line comprises a metal grounding hook (1), a telescopic epoxy resin insulation operating rod (2), a metal grounding plate (14) on the grounding end of a tower body of an iron tower and a grounding copper wire (3), wherein a splayed elastic clamping tongue (102) is arranged in a U-shaped hook body (101) of the metal grounding hook (1), a transmission line clamping groove (109) is arranged between the top end of the splayed elastic clamping tongue (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), the lower end of the grounding copper wire (3) is connected with a U-shaped metal frame (15), and the locking mechanism is characterized in that a hook bottom electromagnetic ferromagnetic attraction block (103) is arranged at the right lower end of the U-shaped hook body (101), a hook bottom electromagnetic attraction coil (13) is arranged on the U-shaped hook bottom electromagnetic attraction block (103), a hook top electromagnetic attraction block (108) is arranged on the outer side surface of the top end of the U-shaped hook body (101), a hook top electromagnetic attraction block (108) is arranged on the outer side of the U-shaped hook body (101), a ferromagnetic attraction block (18) is arranged in the U-shaped electromagnetic attraction block (18), the power supply device comprises a U-shaped metal frame, an electromagnet coil (12) arranged in the U-shaped metal frame, a normally open first control circuit switch (11) arranged between two parallel sides of the U-shaped metal frame, a switch-on button arranged above the first control circuit switch (11), a manual jackscrew threaded hole (16) arranged on the U-shaped metal frame above the switch-on button, a manual jackscrew (17) screwed in the manual jackscrew threaded hole (16), a normally open second control circuit switch (10) arranged in a power transmission line clamping groove (109), wherein the electromagnet coil (12) in the U-shaped metal frame is connected with the positive electrode and the negative electrode of a power supply battery (9) in series, and the electromagnet coil (13) at the bottom end of a hook is connected with the electromagnet coil (19) at the top end of the hook in parallel first and then connected with the positive electrode and the negative electrode of the power supply battery (9) in series after the electromagnet coil (11) is connected with the first control circuit switch.
2. 2. The locking mechanism capable of achieving safe hanging and detaching of the grounding wire on the high-voltage transmission line is characterized in that an upper horizontal circular ring trip (104) is arranged on the right side of the top end face of an electromagnetic ferromagnetic suction block (108) at the top end of a hook, a lower horizontal circular ring trip (107) is arranged on the right side of the bottom face of an electromagnetic ferromagnetic suction block (103) at the bottom end of the hook, an insulating rod upper permanent magnet magnetic suction block (201) is fixedly arranged on the top end face of an epoxy resin insulating operation rod (2), a connecting column (203) is arranged on the right side of the top end face of the insulating rod upper permanent magnet magnetic suction block (201), the upper end of an epoxy resin insulating operation rod (2) is connected with the right lower end of a U-shaped hook body (101) through the magnetic attraction force of the insulating rod upper permanent magnet magnetic suction block (201) and the electromagnetic ferromagnetic suction block (103) at the bottom end of the hook, and the connecting column (203) is spliced in the lower horizontal circular ring trip (107).
3. 3. The locking mechanism capable of realizing safe hanging and detaching of the grounding wire on the high-voltage transmission line according to claim 1 or 2, wherein a clamping tongue elastic supporting rod (105) is arranged between the splayed elastic clamping tongue (102) and the inner side surface of the U-shaped hook body (101).
4. 4. The locking mechanism capable of realizing safe hanging and detaching of the grounding wire on the high-voltage transmission line according to claim 1 or 2 is characterized in that an expansion joint (202) is arranged in the middle of an epoxy resin insulation operation rod (2), and an insulation handle sheath (204) is arranged at the lower end of the epoxy resin insulation operation rod (2).

Description

Locking mechanism capable of realizing safe hanging and detaching of grounding wire on high-voltage transmission line Technical Field The invention relates to a high-voltage line grounding wire used in high-voltage transmission line maintenance, in particular to a locking mechanism capable of realizing safe hanging and detaching of the grounding wire on the high-voltage transmission line. Background Before operation, maintenance and repair are carried out on the high-voltage transmission line, operation and repair personnel must connect a grounding wire on each phase line of the three-phase transmission line on one side of the transmission tower, which is close to the transformer substation, in advance, and electrically connect the three-phase transmission line with the transmission tower together so as to realize grounding short circuit of the transmission line, thereby ensuring the safety of operation on the tower of the operation, repair and repair personnel; when the grounding wire is hung before power failure overhaul, the procedure requires that the grounding end is firstly hung, namely, one end of the grounding wire is firstly connected with the grounding plate on the grounding end of the tower body of the iron tower and then the grounding hook can be hung on the high-voltage transmission line, in the process of dismantling the grounding wire, the grounding hook is firstly removed from the high-voltage transmission line, then one end of the grounding wire can be dismantled from the grounding plate on the grounding end of the tower body of the iron tower, so that the life safety of operators is ensured, but in the process of carrying out the hanging and dismantling operation of the grounding wire on site, the phenomenon that the operators violate the operation procedure sometimes occurs, the life safety of site operation staff is greatly threatened, and the problem of how to realize the locking of the operation behavior violating the operation procedure through the operation mechanism on site is solved on site. The existing high-voltage circuit grounding rod is an integrated grounding rod, namely, a metal grounding hook is fixedly arranged at the top end of a long rod-shaped insulating rod, a grounding copper wire is connected to the grounding hook, the weight of the whole grounding rod is about ten jin, the length of the whole grounding rod is about several meters, the metal grounding hook is U-shaped, a clamp spring with elasticity for clamping a wire is arranged in a U-shaped opening, and after the U-shaped hook is hooked on the wire, the wire and the hook body are fixedly connected into a whole through the clamp spring; the method comprises the steps of carrying a long rod-shaped grounding rod by an operator, climbing a certain phase of power transmission line on an iron tower to a corresponding grounding point on the iron tower, connecting the lower end of a grounding copper wire connected with a grounding hook on the insulating rod to the corresponding grounding point on the iron tower, finally holding the insulating rod by hands, hooking the grounding hook at the end of the insulating rod to the phase of power transmission line, and hooking a U-shaped hook body on the power transmission line to complete the grounding short circuit work of the phase of power transmission line, lifting the corresponding power transmission line on the iron tower by the operator after the power transmission line on the iron tower is hung on the phase of power transmission line, carrying a second insulating rod to climb the tower, repeating the tower climbing operation for three times to complete the ground wire hanging work of the three-phase power transmission line, reducing the labor intensity of the ground wire hanging work, improving the field hanging work efficiency, and being a problem to be solved on the site, the metal hook at the top end of the insulating rod is positively hung on the line, namely, the U-shaped metal hook is downwards hung on the line, the metal hook depends on dead weight and is hung on the line, so that reliable electric connection between the hook and a wire can be basically realized, but when the hanging line is below an operating point, an operator can only upwards hang the U-shaped opening of the grounding hook on the power transmission line in a reverse direction, at the moment, the dead weight of the metal hook can become hidden danger that the hook is separated from the wire, and meanwhile, the reverse hanging mode of the U-shaped opening upwards also easily causes unreliable electric connection between the grounding hook and the power transmission wire, even the phenomenon that the hook falls off, so that the power transmission line fails in grounding, and the life safety of on-site operators is seriously threatened. Disclosure of Invention The invention provides a locking mechanism capable of realizing safe hanging and detaching of a grounding wire on a high-voltage transmission