Rigid spanning support and spanning method for overhead transmission line construction

Abstract

The invention discloses a rigid crossing support, in particular to a rigid crossing support and a crossing method for construction of overhead transmission lines. The rigid crossing support comprises a hanging basket for enabling operation staff to stand on, a pair of V-shaped outward-extending cleat-shaped structures is arranged on one end face of the hanging basket, two pulleys are arranged on a top beam of the hanging basket, and the hanging basket is installed at the top end of a lazy arm of a crane. The rigid crossing support and the crossing method for construction of overhead transmission lines have the advantage that by means of the hanging basket and the crane on the hanging basket, the crane can drive the hanging basket to finish cable crossing, meanwhile the V-shaped outward-extending cleat-shaped structures can prevent cables from dropping during cable crossing, the provided pulleys facilitate stable crossing of the cables, and the rigid crossing support is simple in structure, low in cost and good in safety and stability, requires no scaffold, is strong in maneuverability, convenient to operate and use and short in construction period, and ensures device safety and construction safety.

Description

technical field [0001] The invention relates to a rigid spanning support, in particular to a rigid spanning support and a spanning method for the construction of an overhead power transmission line spanning a railway bridge. Background technique [0002] The general construction plan for overhead transmission lines spanning railway bridges is to erect bamboo or steel pipe spanning frames on both sides of the railway, throw the guide ropes over the high-voltage railway lines, and then lay insulation nets for construction. The existing spanning frames used in spanning construction exist There are many disadvantages and hidden dangers, such as large overall frame size, low process efficiency, high cost, high time cost, low economic benefits, and poor safety and stability; for example, the high-speed railway accident on the Wenyong Line on July 23, 2011 Afterwards, the railway department's review of safety measures for cross-railway construction became more stringent. Contents...

AI Technical Summary

Problems solved by technology

[0002] The general construction plan for overhead transmission lines spanning railway bridges is to erect bamboo or steel pipe spanning frames on both sides of the railway, throw the guide ropes over the high-voltage railway lines, and then lay insulation nets for construction. The existing spanning frames used in spanning construction exist There are many disadvantages and hidden dangers. The overall frame is bulky, the process efficiency is low, the cost is high, the time cost is high, the economic benefit is not outstanding, and there are also problems of poor safety and stability; Afterwards, the railway department's review of safety measures for cross-railway construction has become more stringent

Images