Pliers-type live work fixture and its usage

Abstract

The invention relates to the field of tools, in particular to a pincer-type live work jig for replacing composite insulators in power transmission lines and a method for using it. Composed of a lead screw wrench, the feature is that there is a fastening groove on the card body, and a fastening bolt is arranged perpendicular to the card body in the fastening groove, and a fastening hook is set on the fastening bolt, and the fastening hook is parallel to the card body , the present invention changes the single function of the original straight line fixture, and can be applied to all types of straight line towers at present. Due to the reason of the fasteners, the fixture does not have the phenomenon of loosening and tilting, and the force on both sides of the cross-arm angle iron is not easy to produce It has the advantages of flexible operation, strong practicability, high work efficiency and high safety.

Description

technical field [0001] The invention relates to the field of tools, in particular to a pincer-type live work jig for replacing synthetic insulators in power transmission lines and a method for using it. Background technique [0002] As we all know, insulators are wearing parts in power transmission lines. When replacing insulators, linear clamps are generally used. The linear clamps are composed of a clamp body with a U-shaped groove and a screw hole, a screw with a positioning block and a screw wrench. There is a fastening screw handle on one side of the card slot on the card body, and the screw hole can be provided with a thread that meshes with the screw, or a card slot and a guide post that are meshed with the screw can be provided on the card body. It can only be applied to straight cement poles and single-circuit straight towers. When applied to cement poles, the fixture is installed on the angle iron above the insulator hanging point, because the length of the angle i...

AI Technical Summary

Problems solved by technology

[0002] As we all know, insulators are wearing parts in power transmission lines. When replacing insulators, linear clamps are generally used. The linear clamps are composed of a clamp body with a U-shaped groove and a screw hole, a screw with a positioning block and a screw wrench. There is a fastening screw handle on one side of the card slot on the card body, and the screw hole can be provided with a thread that meshes with the screw, or a card slot and a guide post that are meshed with the screw can be provided on the card body. It can only be applied to straight cement poles and single-circuit straight towers. When applied to cement poles, the fixture is installed on the angle iron above the insulator hanging point, because the length of the angle iron at the cross arm insulator hanging point of the iron tower is 1 / 2 shorter than that of the cement pole. 3 or so, so the straight line clamps used on the iron tower can only be installed on the angle irons on both sides of the cross arm. Due to the differences in the length and specifications of the angle irons, the bearing coefficient of the angle irons on both sides of the cross arm is significantly reduced. The fixture cannot be used on special straight-line towers such as double-circuit towers, large down-pressure towers, and large-span span towers. In addition, the use of this fixture on the angle irons on both sides of the cross arm will cause the vertical direction of the fixture and the wire to exist. At a certain angle, the opening direction of the U-shaped groove of the fixture is exactly the same as the wire, so that the lead screw of the fixture cannot swing along the vertical direction of the wire, which limits the operability of the lead screw and the fixture. Due to the U-shaped groove and the lead screw There is only a 1-2mm gap between them. According to the current structure of all types of straight iron tower cross-arms, when the inclination angle of the lead screw of the fixture is greater than 5°, there will be a dead angle between the lead screw and the fixture and the jamming phenomenon will occur, and the lead screw will be overstressed on one side. Large, very difficult to operate, and there are very unsafe factors

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