Conduit lifting device and method used for injection of concrete into steel tubes of power transmission tower in upper air

Abstract

The invention relates to a conduit lifting device and method, in particular to a conduit lifting device and method used for injection of concrete into steel tubes of a power transmission tower in theupper air. At present, conduits are sleeved, wound, tied and fixed by steel wires, lifting operation is carried out on flange openings of the steel tubes, the operation efficiency is low, and the safety is low. The device includes a base, a bracket, a steel wire rope pulley group, a conduit fixing support and a hoisting mechanism; the base includes a bottom frame, long grooves are formed in four corners of the bottom frame respectively, the bottom frame is fixed to flanges crossing the steel tubes of a tower body through connectors, and the bracket is vertically arranged on the bottom frame and provided with the steel wire rope pulley group. The conduit fixing support includes a fixing frame and connecting rods, the connecting rods are detachably connected to the fixing frame through connectors, and the fixing frame is provided with conduit holes matched with the conduits. According to the technical scheme, the operation efficiency is improved, and the operation safety of the conduitsis improved. The long grooves are formed to provide convenience for inserting the connectors, and the connection reliability of the bottom frame is improved.

Description

technical field [0001] The invention relates to a conduit lifting device and method, in particular to a conduit lifting device used for high-altitude pouring of steel pipe concrete for transmission towers. Background technique [0002] The large-scale spanning tower of the large-span project of the transmission line, due to the large load characteristics of the main material of the tower body, adopts the steel pipe concrete structure, whether it is to improve the buckling resistance of the steel pipe members, to enhance the pressure bearing capacity of the steel pipe section, or to reduce the difficulty of manufacturing and construction. , have more advantages than pure steel pipe structures, and have become a development trend in the design of large spanning tower structures. [0003] Due to the structural characteristics of the large root opening of the spanning tower, the section length of the nodes in the main pipe of the tower body is longer, and the corresponding heigh...

AI Technical Summary

Problems solved by technology

At present, the conduit is fixed with a steel wire sleeve, combined with a chain hoist, and the lifting operation is performed at the flange of the steel pipe. This method has two major disadvantages: (1) The operation efficiency is low, and the lifting speed is slow when using a chain hoist, and every The lifting or dismantling of sectioned pipes requires manual switching of the gourd and the binding points of the pipes inside the steel pipe; (2) The operation safety is not high, and the operators carry out the lifting operation of the pipes in the limited space inside the steel pipe. If the station is not correct, prone to personal injury

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