CN2443514Y

CN2443514Y - Transmission line clamp type earthing wire

Info

Publication number: CN2443514Y
Application number: CN 00210033
Authority: CN
Inventors: 周明政; 修成林
Original assignee: CHAOYANG POWER SUPPLY BUREAU
Current assignee: CHAOYANG POWER SUPPLY BUREAU
Priority date: 2000-08-21
Filing date: 2000-08-21
Publication date: 2001-08-15
Anticipated expiration: 2010-08-21

Abstract

The utility model relates to a mouse clamp type earthing wire of a transmission line, which is composed of a wire clamp of a conducting wire end, a screw nut of an earthing end, short-circuit wire, and an insulating rope. The utility model is suitable for interruption maintenance work of 66 kV-500kV transmission lines. The utility model has the specific structure that the earthing end is provided with the screw nut which is connected with the wire clamp of the conducting wire end through the short-circuit wire; the of the conducting wire end comprises a wire clamp body, a wire clamp movable body, the insulating rope, a clamping pin, and a tension spring. When the utility model works, the wire clamp movable body is opened and is hung on the transmission line by pulling the insulating rope.

Description

Transmission line rat clip type earth connection

The utility model relates to the earth connection that uses on transmission line---transmission line rat clip type earth connection.

The transmission line earth connection is installed in the job site two ends when being used for the line outage operation, can prevent that incoming call, static or thunder and lightning etc. cause unexpected injury to the operating personnel to circuit suddenly.At present, there are split-phase type, composite type portable short-circuit grounding wire in China, and its structure is short-circuit line one a termination conductor wire end wire clamp, another termination earth terminal wire clamp, conductor wire end wire clamp ground connection hook stick.The earth connection of this pattern is because the conductor wire end wire clamp is little, and the operating personnel carries reasons such as earth connection rod-rising tower inconvenience, and the circuit homework personnel are unwilling to use on transmission line.

The purpose of this utility model is exactly that a kind of transmission line rat clip type earth connection is provided in order to overcome the deficiencies in the prior art.

The purpose of this utility model can reach by following measure:

This earth connection comprises: earth terminal nut, ground short circuit line, insulation rope, conductor wire end wire clamp.Concrete structure is that wire clamp main body (6) top is hinged with the top of wire clamp kinetoplast (9) by balance pivot (13), wire clamp kinetoplast one end cylinder lever connecting rod (11) middle part, pull bar one end connects insulation rope (4) one ends that are arranged in the wire clamp main body, the pull bar other end is fixed on the wire clamp main body by extension spring (12) and adjustment screw (7), also be provided with wire clamp kinetoplast bayonet lock (8) on the wire clamp main body, bayonet lock connects spring (15), and the bayonet lock end support is on wire clamp kinetoplast work stop (14).Ground short circuit line (2) one ends are fixed on the fixing hole (10) of wire clamp main body, another termination earth terminal nut (1).Insulation rope (4) other end is fixed on the ground short circuit line by fixed card (3).

The purpose of this utility model can also reach by following measure:

Earth terminal nut (1) is made up of inner nut (16), nut overcoat (17), short-circuit line clamp (18), and inner nut is contained in the nut overcoat, and the short-circuit line clamp is fixed on the end face of nut overcoat by screw (19).

Description of drawings:

Fig. 1 is a general illustration of the present utility model, (1) earth terminal nut wherein, (2) ground short circuit line, (3) insulation rope fixed card, (4) insulation rope, (5) short-circuit line set bolt, (6) wire clamp main body, screw is adjusted in (7) extension spring, (8) bayonet lock, (9) wire clamp kinetoplast, (13) balance pivot.

Fig. 2 is a conductor wire end wire clamp schematic diagram among Fig. 1, (10) short-circuit line fixing hole wherein, (11) pull bar, (12) extension spring, (14) wire clamp kinetoplast work stop, (15) spring.

Fig. 3 is an earth terminal nut schematic diagram among Fig. 1, (16) inner nut wherein, (17) nut overcoat, (18) clamp, (19) screw.

The utlity model has following advantage;

1, modern design, the contact area and holding that has satisfied between earth connection and lead is puted forth effort, any M that the grounding nut of making can be on electric power line pole tower₁₆It is fixing on the bolt that also ground connection is reliable.

2, conductor wire end wire clamp opening diameter and earth terminal nut suit at the lead of all size model With use on the shaft tower.

3, earth connection is hung and to be torn open simply, flexibly, carries, easy to use.

Below the utility model is described further:

Transmission line rat clip type earth connection is made up of conductor wire end wire clamp, earth terminal nut, short-circuit line and insulation four parts of restricting.Be applicable to 66kV-500kV (wire gauge 70～400mm ²) use during the operation of transmission line interruption maintenance.The conductor wire end wire clamp adopts rat clip type principle, lever drive mechanism, and adjustable spring is housed in the wire clamp, can guarantee that the effective contact area between wire clamp and lead is puted forth effort with holding; Earth terminal is made M ₁₆Copper nut also is contained in the copper sheathing, and nut can rotate in copper sheathing, is convenient to any M on electric power line pole tower ₁₆Screw and reliable ground on the bolt; Short-circuit line is selected 38.5mm for use ²The establishment annealed copper wire, external application latex insulating sleeve; Insulation rope (diameter 3mm, long 300mm) two ends are separately fixed on the pull bar of conductor wire end wire clamp and the appropriate location of short-circuit line, replacement ground connection hook stick.

The method of operation of hanging, disconnecting ground wire is as follows: after the transmission line that is overhauled had a power failure and identifies true no electricity, during hanging earthing conductor, the operating personnel at first was tightened on the earth terminal nut of this earth connection the M of shaft tower ₁₆On the bolt, then, the operating personnel mentions the short-circuit line that connects the conductor wire end wire clamp makes the conductor wire end chuck down, and portable short-circuit line upwards pulling insulation rope is opened conductor wire end wire clamp head opening, wire clamp head opening is upwards lifted short-circuit line to the heap lead, and the conductor wire end wire clamp can hang on the lead.Disconnect the operating sequence of ground wire and the reversed in order of hanging earthing conductor.

Claims

1, a kind of transmission line rat clip type earth connection, it comprises the earth terminal nut, the ground short circuit line, the insulation rope, the conductor wire end wire clamp, it is characterized in that wire clamp main body (6) top is hinged with the top of wire clamp kinetoplast (9) by balance pivot (13), wire clamp kinetoplast one end cylinder lever connecting rod (11) middle part, pull bar one end connects insulation rope (4) one ends that are arranged in the wire clamp main body, the pull bar other end is fixed on the wire clamp main body by extension spring (12) and adjustment screw (7), also be provided with wire clamp kinetoplast bayonet lock (8) on the wire clamp main body, bayonet lock connects spring (15), the bayonet lock end support is on wire clamp kinetoplast work stop (14), ground short circuit line (2) one ends are fixed on the fixing hole (10) of wire clamp main body, another termination earth terminal nut (1), insulation rope (4) other end is fixed on the ground short circuit line by fixed card (3).

2, according to the said earth connection of claim 1, it is characterized in that earth terminal nut (1) is made up of inner nut (16), nut overcoat (17), short-circuit line clamp (18), inner nut is contained in the nut overcoat, and the short-circuit line clamp is fixed on the end face of nut overcoat by screw (19).