CN106299764A - A kind of wired earth wire clamp with double hanging wire pattern - Google Patents

Abstract

The invention relates to a wire grounding clamp with a double-hanging wire mode, which includes an upper and lower clamp body, the middle parts of the upper and lower clamp bodies are connected by a shaft pin covered with a torsion spring, and a commutator is fixed at the head end of the upper clamp body. There is a limit plate inside the commutator, and a through hole on the top of the commutator; a through groove is symmetrically arranged in the middle of the upper and lower wire clamp body, and a springboard connected with the lower wire clamp body is arranged at the through groove, and the top of the springboard is passed through a nylon The rope is connected to the limit plate; the tail ends of the upper and lower wire clamp bodies are respectively connected to a connecting plate in rotation, and the two connecting plates are coaxially connected to the pull plate through a pin shaft; an insulating rope is tied to the pull plate, and the other end of the insulating rope is fixed It is on the pin and extends outward; the tail end of the lower clamp body is fixed with an annealed grounding copper wire. The invention has two operation modes, and has the characteristics of simple structure, convenient assembly and disassembly, flexible operation, wide application range and convenient portability, and effectively reduces the labor intensity and operational technical difficulty of operators.

Description

A wire ground clamp with double hanging wire mode

technical field

The invention relates to a wire grounding clamp used for high-voltage overhead transmission line power outage maintenance, in particular to a wire grounding clamp with a double hanging wire mode.

Background technique

The power industry is a basic industry and public utility that supports the development of the national economy and society. With the rapid development of my country's national economy and the continuous improvement of people's living standards, the degree of dependence on electricity is also increasing. Therefore, power grid security is related to national economy and people's livelihood, and transmission line security is an important guarantee for power grid security. In order to ensure the safety and stability of power transmission equipment, the equipment must be inspected and repaired to eliminate defects and troubleshoot hidden dangers in strict accordance with the regulations.

Power outage maintenance is the main way to eliminate the shortage of overhead transmission line equipment. The "Power Grid Safety Work Regulations" clearly stipulates that all ends of the work area of each work shift and all branch lines (including users) that may reverse power transmission in the work area should be grounded, and the construction ground wire should be hung during the construction process to prevent induction. Electricity causes accidents. Therefore, reliable grounding of power failure lines is one of the important technical measures to ensure safety when working on power lines. There are two types of grounding clamps widely used in operations at present:

One is to use the acceleration of gravity when the wire clip falls from the air to hang it. When in use, the operator puts the grounding wire clamp down from the top of the wire at the cross-arm head, and releases the insulating rope held by the wire clamp when it is a certain distance above the wire. The wire clip is clamped on the wire under the action of the spring. This kind of grounding clamp is suitable for straight towers where the cross-arm head has sufficient operating space and the wires are directly below the cross-arm. For tension-resistant corner towers, terminal towers, branch towers, etc., the wires are not directly under the cross-arm. It is very difficult to hang the wire clamp and requires high skills, especially for the wire with a large corner, it often takes a long time to hang it. You can only put the wire clip at the same height as the wire, make the wire clip pendulum, and use the impact Force the clip to hang on the wire. This method requires the operator to have skilled skills, the success rate is very low, and it is time-consuming and labor-intensive.

The other is to use an insulating operating rod to hang. This kind of grounding clamp needs to fix the clamp on the insulating operating rod first, and then rotate the operating rod to tighten the clamp on the wire. This kind of grounding wire clip needs certain experience when hanging, and the tightening force is difficult to master. Often, poor contact between the clip and the wire leads to the clip slipping or induction discharge between the wire and the wire clip, which burns the wire clip and wire, resulting in production accidents. Can not achieve the purpose of ensuring the safety of work. Using the operating rod to hang requires the operator to carry the grounding wire, electroscope pen, etc. and also carry the operating rod at the same time, and the insulation performance of the operating rod must be tested before work. For larger distances, it is necessary to lengthen the operating rod on the tower, which is difficult to operate and has a high risk factor.

Its operation mode technical difficulty of above several kinds of existing wire clamps is big, time-consuming and labor-intensive, complicated procedure, makes the power outage maintenance time that is not abundant originally more tense. Seriously affected the work plan and reduced work efficiency.

Contents of the invention

Based on the above reasons, the object of the present invention is to provide a wire grounding clamp with double hanging wire mode, which can be adapted to the grounding operation of different tower wires through the conversion of the operation mode, and has the advantages of simple operation. Safe and reliable and so on.

In order to achieve the above object, the technical solution adopted in the present invention is:

A wire grounding clamp with a double hanging wire mode, including a clamp body, a springboard, a commutator, a limit plate, a bolt, an insulating rope, a pull plate and a connecting plate; the clamp body is divided into an upper clamp body and a lower wire Clamp body, the middle part of the upper and lower wire clamp body is connected by a shaft pin covered with a torsion spring, the head end of the upper and lower wire clamp body is an open end, the head end of the upper wire clamp body is fixed with a commutator, and a limit plate is arranged inside the commutator , the top of the commutator is provided with a through hole; the middle part of the upper and lower wire clamp body is symmetrically provided with a through groove, and the through groove is provided with a springboard that is rotatably connected with the lower wire clamp body, and the top of the springboard is connected with the limit plate through a nylon rope; The tail ends of the clamp body are respectively connected with a connecting plate in rotation, and the two connecting plates are coaxially connected with the pull plate through the pin shaft; the pull plate is tied with an insulating rope, and the other end of the insulating rope is fixed on the bolt and extends outward; The tail end of the lower clamp body is fixed with an annealed grounding copper wire.

The end of the limit plate exposed to the commutator is provided with a limit plate pull ring, and the nylon rope is tied to the limit plate pull ring. It can reciprocate under the tension of nylon rope.

The bottom of the bolt is provided with a spring, and the bolt is inserted into the through hole on the commutator and fixed by a limiting plate.

The top of the springboard is provided with an L-shaped groove, and an elastic pin is arranged in the through groove of the upper clamp body. When the springboard stands upright, the L-shaped groove is clamped on the elastic pin.

The nylon rope is a high-strength nylon rope.

The invention adds a reversing operation mode through the commutator and the latch, and it can be selected whether to adopt the reversing operation mode according to the needs of the specific operation site environment. It greatly reduces the labor intensity and technical difficulty of the operators.

The present invention will be further elaborated below through the accompanying drawings and specific embodiments.

Description of drawings:

Fig. 1 is the three-dimensional structure schematic diagram of the present invention;

Fig. 2 is the front view structure schematic diagram of the present invention;

Fig. 3 is a top structural schematic diagram of the limiting plate.

detailed description:

As shown in Figures 1 to 3, a wire grounding clamp with a double hanging wire mode includes a clamp body, a springboard 4, a commutator 3, a limit plate 10, a latch 9, an insulating rope 7, and a pull plate 5 And connecting plate 6. Wherein, the wire clamp body is divided into an upper wire clamp body 1 and a lower wire clamp body 2, the middle parts of the upper wire clamp body 1 and the lower wire clamp body 2 are connected by a pin shaft 16 covered with a torsion spring 15, and the upper wire clamp body 1 and the lower wire clamp body The open end of the body 2 is defined as the head end, and the other end is the tail end, and the open end is used for clamping the wire. The separation and closing of the upper wire clamp body 1 and the lower wire clamp body 2 are driven by the torsion spring 15 . The commutator 3 is fixed on the head end of the upper clamp body 1 by a headless screw. There is a cavity inside the commutator 3. The cavity communicates with the round hole on its side. A limiting plate 10 is arranged in the cavity. The limiting plate 10 is covered with a spring 19, and one end of the limit plate pull ring 11 is provided on the limit plate 10 to protrude from the circular hole, and the top of the commutator 3 is provided with a through hole 14, which communicates with the cavity.

In the middle of the upper wire clamp body 1 and the lower wire clamp body 2, a rectangular through groove 18 is symmetrically opened. Can rotate along elastic pin 17. An L-shaped groove 22 is provided on the top of the springboard 4, and an elastic pin 17 is provided in the through groove 18 of the upper clamp body 1, so that the L-shaped groove 22 can be clamped to the upper limit of the elastic pin 17 when the springboard 4 is in an upright position. . The limit plate pull ring 11 is connected with the top of the springboard 4 with a high-strength nylon rope 8, and the pulling force of the nylon rope 8 can be used to pull the limit plate 10 to reciprocate.

The tail ends of the upper wire clamp body 1 and the lower wire clamp body 2 are respectively connected to a connecting plate 6 with an elastic pin 17, so that the connecting plate 6 can rotate along the elastic pin 17, and pass through the pin shaft at the other end of the two connecting plates 6. 16 is coaxially connected with pull plate 5. One of the supporting parts of the wire grounding clamp is a pin 9, the top of the pin 9 is provided with a pin ring 12, the lower cylinder is provided with a limit snap ring, and a spring 13 is installed at the bottom of the pin 9. An insulating rope 7 is tied on the pull plate 5, and when the reversing working mode needs to be selected, the other end of the insulating rope 7 needs to be fixed on the latch ring 12 before extending outward. A hexagonal bolt 20 is fixed on the bottom of the tail end of the lower clamp body 2 , and a ground annealed copper wire 21 is fixed on the hexagonal bolt 20 .

The conductor ground wire clamp with the above structure has two working modes, one is commutation mode and the other is non-commutation mode. Among them, the non-reversing mode is applicable when the grounding position is directly below the cross-arm and the conductor is close to the cross-arm. When using this mode for grounding work, without using the latch 9, the insulating rope 7 can be directly tied to the pull plate 5, and the other end of the insulating rope 7 is held in hand, and the clamp is put down from the top of the wire so that its open end is aligned with the wire. When the distance between the wire clip and the wire reaches a certain distance, the wire clip is accelerated to fall. Under the impact of gravity, the L-shaped groove 22 at the top of the springboard 4 is separated from the elastic pin 17, and the upper wire clip body 1 and the lower wire clip body 2 are on the pull plate. 5 and the effect of the torsion spring 15 drive the open end to open and clamp the lead, and complete the whole hanging operation. Wherein, the pull plate 5 and the connecting plate 6 are connected coaxially, and the geometric principle is used to act as a lever, so that the disassembly and opening of the wire clip is more labor-saving and convenient.

When it is used for large corner wires and the wires are far away from the cross arm, the reversing mode can be selected. First, one end of the insulating rope 7 is tied to the pull plate 5, the middle part is fixed on the latch pull ring 12, and the other end is used as the operating end. . Insert the bolt 9 fastened with the insulating rope 7 into the cavity from the through hole 14 at the top of the commutator 3 , and under the action of the limiting plate 10 , clamp and lock the limiting snap ring at the bottom of the bolt 9 . Because the rope only transmits pulling force, the nylon rope 8 that is tied between the springboard 4 and the limit plate pull ring 11 can not have an impact on the locking state of the springboard 4. At this time, the L-shaped groove 22 on the springboard 4 is just engaged with the elastic pin 17 . The worker puts the wire clip down on the outside of the wire along the horizontal line direction, and gradually approaches the wire with the operating end of the insulating rope 7. Under the gravity of the ground soft copper wire 21, the open end of the wire clip naturally faces upward without additional adjustment. , and under the action of gravity, the insulating rope 7 pulls the pull plate 5, so that the opening end of the clamp body opens to clamp the wire. At this time, the springboard 4 slides off from the elastic pin 17, and the springboard 4 passes through the nylon The rope 8 drives the limiting plate 10 to move to the outside of the commutator 3, making the locking of the locking pin 9 by the limiting plate 10 invalid, and the latch 9 is ejected from the commutator 3 under the action of the spring 13, and the whole line hanging operation is completed. .

Each part of the conductor grounding clamp provided by the invention adopts movable connection, which is very convenient for disassembly and assembly, and the operation is simple, and does not need to be controlled by experience. There are two hanging wire modes that can be freely selected to meet the grounding conditions of all overhead wires involved in current production.

The above embodiments are only used to illustrate the technical solution of the present invention without limitation. Other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the present invention should be covered as long as they do not depart from the spirit and scope of the technical solution of the present invention. Within the scope of the claims of the present invention.

Claims (5)

1. A wire grounding clamp with double hanging wire mode is characterized in that: it includes a clamp body, a springboard, a commutator, a limit plate, a latch, an insulating rope, a pull plate and a connecting plate; the clamp body is divided into The upper and lower wire clamp bodies are connected by a shaft pin covered with a torsion spring in the middle of the upper and lower wire clamp bodies. There is a limit plate inside the switch, and a through hole is set on the top of the commutator; a through groove is symmetrically arranged in the middle of the upper and lower wire clamp body, and a springboard connected with the lower wire clamp body is arranged at the through groove, and the top of the springboard is connected with the nylon rope The limit plate is connected; the tail ends of the upper and lower wire clamp bodies are respectively connected with a connecting plate in rotation, and the two connecting plates are coaxially connected with the pull plate through the pin shaft; the pull plate is tied with an insulating rope, and the other end of the insulating rope is fixed to the bolt and extend outward; the end of the lower clamp body is fixed with an annealed ground copper wire. 2. A wire grounding clamp with double hanging wire mode according to claim 1, characterized in that: the end of the limit plate exposed to the commutator is provided with a limit plate pull ring, and the nylon rope is tied to the limit plate. On the pull ring of the position plate, a section of the limit plate placed inside the commutator is sheathed with a spring, and the limit plate can reciprocate under the tension of the nylon rope. 3. A wire grounding clamp with double hanging wire mode according to claim 1, characterized in that: the bottom of the pin is provided with a spring, and the pin is inserted into the through hole on the commutator and fixed by the limit plate . 4. A wire grounding clip with double hanging wire mode according to claim 1, characterized in that: the top of the springboard is provided with an L-shaped groove, and an elastic pin is provided in the through groove of the upper wire clip body, and the springboard When standing upright, the L-shaped groove is clamped on the elastic pin. 5. The wire grounding clip with double hanging wire mode according to claim 1, characterized in that: the nylon rope is a high-strength nylon rope.