Rotation elevating apparatus of overhead ground wire of power transmission line

Abstract

The invention discloses a rotation elevating apparatus of an overhead ground wire if a power transmission line. The rotation elevating apparatus comprises a main body vertical pipe, the upper end of the main body vertical pipe is provided with a sleeve wire hook ring, the left end and the right end of the sleeve wire hook ring are respectively provided with a left side steel stay cable and a right side steel stay cable, the lower end of the main body vertical pipe is hinged to a seat body, and the seat body is provided with a clamping mechanism capable of fixation to a power transmission tower. According to the invention, the lower portion of the main body vertical pipe is fixed on the angle iron of the power transmission iron tower through a U-shaped rotation seat, the upper portion of the main body vertical pipe is sleeved by the overhead ground wire, the overhead ground wire is transferred to the ground for maintenance through rotation of the main body vertical pipe, the repaired overhead ground wire can also be recovered to a normal state through upward rotation of the main body vertical pipe, the operation mode can be optimized, the operation process is simplified, and the efficiency and the safety of maintenance work are greatly improved.

Description

technical field [0001] The invention relates to the technical field of maintenance tools for power transmission lines. Background technique [0002] In order to ensure the power supply safety of the transmission line, it is necessary to timely repair the broken strands of the overhead ground wire, according to (State Grid Corporation of China Enterprise Standard Q / GDW1799.2-2013 <State Grid Corporation of Electricity Safety Work Regulations> Line Part 13 Item 13.3.8 Article 13.3.8.1 of Article 13.3.8.1 stipulates that when a ladder (or flying car) is hung on the guide and ground wires with continuous spans, the cross-sectional requirements of the wires and ground wires are: steel-cored aluminum stranded wires and aluminum alloy stranded wires are not allowed to be less than 120mm square millimeters; the steel strands are not allowed to be less than 50 mm square millimeters, and the overhead conductors and ground wires that do not conform to the above regulations are st...

AI Technical Summary

Problems solved by technology

The five types of maintenance require the overhead ground wire to be grounded. Since the towers of the overhead ground wire are mostly made of hot-rolled angle steel, the bolt assembly adopts a space truss structure, and the suspension point of the ground wire is at a 45-degree angle to the cross-arm truss. After the inclined plane of the truss frame, the ground wires of the two adjacent towers have a diameter of 50 mm square millimeters, a length of 600 meters, and a ground wire weight of about 0.38 tons. Due to the resultant force generated by the overhead ground wires of adjacent tower poles, it needs to be completed by 4 people. Pushing and lifting to the cross-arm head, pushing and lifting at high altitude can easily cause dangerous actions and personal injuries, and also easily cause secondary personal injury due to the sliding of the ground wire on the inclined surface of the cross-trunk frame of the tower pole

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