Ground wire lifter

Abstract

The invention relates to a ground wire lifter, which is characterized by being composed of a cross arm clamp device and a wire lifting hook device, wherein one end part of a positioning block of the wire lifting hook device is located inside a U-shaped notch of the cross arm clamp device. The cross arm clamp device comprises a fastening bolt, a U-shaped clamp plate, a strip plate, a bottom plate, a fixed plate, a fixed plate bolt and a fixed beam. The wire lifting hook device comprises a positioning cylinder, the positioning block, a screw rod, a U-shaped tongue notched plate, a tongue notched plate bolt, a wire lifting hook, a screw rod nut, an insulation rubber layer and a screw rod nut handle. The invention has the beneficial effects that the ground wire lifter can be firmly fixed on a cross arm of a pole tower so as to prevent offset fault, and is light and convenient to carry, suitable for different installation manners and favorable for lifting a ground wire; and the ground wire lifter has the characteristics of simple structure, light weight, convenience for operation, small labor intensity, high operation efficiency and good safety performance.

Description

technical field [0001] The invention relates to a ground wire lifter. Background technique [0002] The rated load of the ground wire lifter is 15KN, which is suitable for lifting the ground wire with large span or top gear. When in use, first hang the ground wire lifter bracket on the ground wire cross arm, place the ground wire in the grooves at both ends of the wire support beam, then turn the screw to drive the screw and the wire support beam to move up, and the wire support beam Lift the ground wires on both sides of the tower at the same time at both ends. [0003] We have carried out a statistical analysis of the long-term construction situation, and found that when the pulley is installed on the linear tower, the existing ground wire lifter often deviates, which all occur on the tower with a large gear or the top gear; When lifting the ground wire, because the actual stress of the ground wires on both sides is not equal, the lifting force required on both sides of ...

AI Technical Summary

Problems solved by technology

[0003] We have carried out a statistical analysis of the long-term construction situation, and found that when the pulley is installed on the linear tower, the existing ground wire lifter often deviates, which all occur on the tower with a large gear or the top gear; When lifting the ground wire, because the actual stress of the ground wires on both sides is not equal, the lifting force required on both sides of the tool is also different. However, the lifter uses a single screw rod. The lifting height is exactly the same, causing the ground wire to wear at the edge of the groove of the support beam, and the different force causes the existing ground wire lifter to deviate to different degrees; the ground wire cross-arm hanging point is generally composed of two pieces or one piece of angle material , the upper bracket of the ground wire lifter is hung on the angle material of the ground wire cross arm, and the width of the upper bracket is only 16mm, the contact area with the ground wire bracket is too small, and there is no auxiliary component that increases friction, the ground wire is stressed Afterwards, the lifter is prone to slipping. In addition, after the wire support beam tilts due to unbalanced force, the contact area between the upper part and the ground wire hanging point cross arm is too small to stabilize the existing ground wire lifter, resulting in the existing ground wire Riser misaligned

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