CN202424088U - Socket spanner special for charged installation of arrester in ground potential - Google Patents

Abstract

The utility model discloses a sleeve wrench specially used for installing lightning arresters charged at ground potential, which includes a sleeve, wherein one end of the sleeve is provided with a joint connected with an insulating operating rod, and the inner side of the other end is provided with a plum blossom-shaped keyway matched with a nut. There are two sections of quincunx-shaped keyway side by side. The diameter of the outer quincunx-shaped keyway is larger than that of the inner quincunx-shaped keyway, corresponding to the lock nut and the end of the screw respectively. There is a compression spring between one end, and two opposite slide grooves are arranged on the casing, and a slide pin is arranged in the slide groove, and two opposite slide pin locking grooves are arranged in the middle of the slide groove. The utility model has a structure Reasonable, in the operation of installing the arrester at the ground potential, the fastening and locking operations can be realized without the operator directly contacting the live body, the safety of personnel and equipment is greatly improved, the operation time is greatly shortened, and manpower and material resources are saved.

Description

A special socket wrench for live installation of arrester at ground potential

Technical field:

The utility model relates to a device for installing electric facilities, in particular to a special socket wrench for installing lightning arresters charged at ground potential. the

Background technique:

Chengde Power Grid is located in the Duolei mountain area, and the power grid accidents caused by lightning are increasing day by day. It is particularly important to take effective measures to reduce the power grid accidents caused by lightning damage. The installation of line arresters is one of the effective technical means to reduce the lightning tripping rate of transmission lines at present. Installing lightning arrestors while live improves the reliability of power supply and avoids less power transmission caused by power outages for maintenance. At the same time, it also enhances the maintenance planning. After adopting the live maintenance method, the operation mode of the system can be kept unchanged, ensuring the safe operation of the power grid, and reducing equipment and personal accidents. Compared with power outage operations, it greatly reduces equipment and personal accidents caused by mistakenly climbing on the tower, mistakenly entering the electrified interval, misoperation, and repeated power outages, power inspections, and grounding procedures. Live work refers to the operation of high-voltage electrical equipment and facilities without power failure. There are three types of live work methods: (1) Equal potential work: refers to the work in which the operator and the charged body are at the same potential. Equipotential electricians generally use tools such as flat ladders or soft ladders to enter the potential; (2) Ground potential work: Refers to the operation where the operator is at the ground potential (standing on the tower) during live work, and uses insulated tools to indirectly contact the high-voltage live body; (3) Intermediate potential work: refers to the work where the worker is between the potential of the live body and the ground potential during live work Potential work. At present, in the process of live installation of lightning arresters in our country, the working methods used are all equipotential working methods. The equipotential working method requires equipotential working electricians to climb soft ladders or flat ladders to enter the potential, and it is necessary to set up a variety of insulating work tools. To set these The operating tools are very cumbersome, the operation is difficult, and the labor intensity is high. According to statistics on the working time of live installation of lightning arresters, the average working time of installing a lightning arrester using the equipotential working method is 28 minutes, and the equipotential working requires very high physical fitness and skills of electricians. At the same time, the equipotential operation method can only be limited to some towers where the safety distance such as the combination gap meets the requirements, and some small-pitch towers cannot carry out live installation arresters due to the limitation of the air gap. In order to solve this problem, the operator designed a wire clamp, which is provided with a hanging hole, and the wire clamp can be hung on the wire through the lifting hole by using the insulating operating rod, and then fastened by the end of the screw. In order to ensure the fastening effect, a lock nut is set on the screw rod. After the screw rod is fastened in place, it is locked by the lock nut. In this way, two types of fastening tools need to be replaced, which makes the operation cumbersome and prolongs the working time. . the

Utility model content:

Aiming at the deficiencies of the prior art, the utility model provides a special socket wrench for installing lightning arresters charged at the ground potential. To realize the fastening and locking operation, the technical scheme adopted by the utility model is as follows: the utility model includes a sleeve, wherein one end of the sleeve is provided with a joint connected with an insulating operating rod, and the inner side of the other end is provided with a plum blossom that cooperates with the nut. It is characterized in that the quincunx keyway is provided with two sections side by side, and the aperture of the outer quincunx keyway is larger than that of the inner quincunx keyway, corresponding to the lock nut and the end of the screw respectively. There is a compression spring between the keyway and the other end of the casing, and there are two opposite sliding grooves on the casing, a sliding pin is arranged in the sliding groove, and two opposite sliding pin slots are arranged in the middle of the sliding groove . the

The using method of the utility model is as follows:

At the ground potential of the operator, use the insulating operating rod with a hook to lift the clamp to the wire on which the arrester is installed, and then fix the socket wrench on the insulating operating rod. At this time, the sliding pin does not have a compression spring, because the screw end The diameter of the head is smaller than the hole diameter of the plum blossom-shaped keyway on the outside of the casing, so it can be directly matched with the plum-shaped keyway on the inside of the casing. After tightening the screw, compress the spring through the sliding pin, and turn the sliding pin to make it snap into the sliding pin slot. At this time, a space is formed between the quincunx-shaped keyway on the inside of the casing and the sliding pin, and the casing wrench can be continued to be pushed to make the end of the screw enter the space, so that the quincunx-shaped keyway on the outside of the casing and the lock nut Cooperate to realize the locking operation. the

Compared with the prior art, the utility model has a reasonable structure. In the operation of installing the lightning arrester at the ground potential, the fastening and locking operations can be realized without the operator directly contacting the electrified body, and the safety of personnel and equipment is greatly improved. Improvement, the operation time is greatly shortened, and manpower and material resources are saved. the

Description of drawings:

Accompanying drawing 1 is the utility model front view,

Accompanying drawing 2 is the utility model plan view,

Accompanying drawing 3 is A-A view among accompanying drawing 1,

Accompanying drawing 4 is B-B view among accompanying drawing 1. the

Detailed ways:

The utility model includes a casing 3, wherein one end of the casing is provided with a joint 6 connected to an insulating operating rod, and the joint is rigidly connected to the insulating operating rod, and can also be connected through a universal joint to adapt to different operations. The inner side of the other end of the sleeve is provided with a plum blossom-shaped keyway that cooperates with the nut, and there are two sections of the plum-shaped keyway side by side. The nut and the screw end are provided with a compression spring 5 in the casing, between the plum blossom-shaped keyway on the inner side and the other end of the casing, and two opposite slide grooves 7 are arranged on the casing, that is, they are 180° apart. Sliding pin 4 is provided in the chute, and the middle part of the chute is provided with two relative sliding pin slots 8, which are also 180° apart, and the space distance formed after the sliding pin compresses the spring should ensure that the lock nut is tightened. the

Claims (1)

1. at earth potential live the lightning arrester special sleeve spanner is installed for one kind, is comprised sleeve pipe, an end of its middle sleeve is provided with the joint that is connected with insulating bar; Other end inboard is provided with the plum blossom shape keyway that cooperates with nut; It is characterized in that plum blossom shape keyway is provided with two sections side by side, wherein the aperture of the plum blossom shape keyway in the outside is bigger than inboard plum blossom shape keyway aperture, respectively corresponding locking nut and screw end head; In sleeve pipe, between the plum blossom shape keyway of inboard and the sleeve pipe other end, be provided with stage clip; And on sleeve pipe, be provided with two relative chutes, and being provided with sliding pin in the chute, the middle part of chute is provided with two relative sliding pin draw-in grooves.

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