Asymmetric traction plate and matching line release pulley for one-pull-three tension line release

Abstract

The invention provides a matching asymmetric traction plate and a line release pulley for construction of one-pull-three tension line release. The asymmetric traction plate comprises a large guided pulling plate, a traction plate body, small guided pulling plates and an anti-twister. Two small guided pulling plates and one small guided pulling plate are respectively arranged at both sides of the anti-twister of the tail end of the traction plate, and two leads and one lead are respectively connected with both sides. The line release pulley comprises a hanging plate, a bracket, a bearing shaft,a steel wire rope pulley and wire pulleys. Two wire pulleys and one wire pulley are respectively arranged at both sides of the steel wire rope pulley, and the position of the wire pulley, which corresponds to the steel wire rope pulley, is in one-to-one corresponding with the position of the small guided pulling plate, which corresponds to the anti-twister. The traction plate cannot overturn dueto the guarantee of the requirements on a certain distance from the small guided pulling plate to an axial line of the anti-twister as well as a lightening hole and a balancing weight which are additionally arranged on a certain position of the traction plate body. The line release pulley is hung on a transmission tower by two hanging holes of the hanging plate, asymmetric loads subjected in linerelease are transmitted to the tower through a connecting piece, thereby guaranteeing the stability of the pulley.

Description

technical field [0001] The invention belongs to the field of tension pay-off construction equipment for overhead power transmission lines, and in particular relates to an asymmetrical traction plate and a pay-off pulley for "one pull three" tension pay-off. Background technique [0002] Tension unwinding refers to the use of tractors, tension machines, pay-off blocks, traction plates and other construction equipment and tools to spread out the wires, so that the wires have a certain tension during the unwinding process, so that they are lifted off the ground and cross obstacles in the air. A setting-out construction method in which the state is laid out on each foundation tower in the setting-out section. At present, tension setting-out has become the most important construction method for the erection of overhead transmission line conductors at home and abroad. Compared with manual setting-out, it has obvious advantages such as less wear of wires, saving manpower, and impro...

AI Technical Summary

Problems solved by technology

If the existing one-to-four traction board is used in the "one-to-three" construction, since the number of wires connected to the two sides of the traction board is different, it will generate torque to the traction board, and the anti-twisting device cannot overcome such a large torque, resulting in The traction plate is overturned and the construction cannot be realized

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