An off-line protection pole device for transmission line pole and tower structure

Abstract

The invention discloses a line-releasing and rod-protecting apparatus of a power transmission line tower structure. The upward side of an end cover is connected with an insulator on a telegraph pole while the downward side is fixed with a sleeve and a fixed arm; the upper end of the fixed arm is tightly attached to the outer wall of the sleeve while lower end is equipped with a check block in an adjustment manner up and down; the upper end, which can slide up and down, of a suspension column is mounted in the sleeve; the lower end of the suspension column extends out of the bottom of the sleeve and is connected with a flying ring; an elastic apparatus is arranged in the sleeve, and the elastic apparatus is compressed between the top of the suspension column and the bottom of the sleeve; anopening is formed in the bottom of the flying ring; the upper end of a vertical rod is fixed with one end of the flying ring; the two ends of a connecting rod mechanism are hinged with the upper andlower ends of the vertical rod respectively; and the connecting rod mechanism and the vertical rod jointly form a right triangle capable of closing the opening of the flying ring. The line-releasing and rod-protecting apparatus is capable of flexibly adjusting the wire releasing on-load critical value, applicable to multi-direction stress, reliable and safe, simple in operation implantation, and capable of enabling the wire to be released in time.

Description

technical field The invention belongs to the technical field of power grid distribution line mechanical devices, and in particular relates to an off-line protection pole device for a transmission line pole structure. Background technique The existing off-line devices for pole and tower structures of transmission lines generally cannot achieve the corresponding off-line effect, that is, when strong winds come, the traditional pole protection devices cannot make the wires fall off. There are four main technical solutions for the existing device, which are the plan of adding shear bolts to the porcelain cross arm, the plan of disconnecting the connecting wire clip, the plan of the spring disconnecting device, and the energy-absorbing line selection device. The cost of using the above devices is high , or it is not easy to repair after a typhoon occurs, wasting a lot of manpower and material resources. With the continuous development of science and technology, many power grid ...

AI Technical Summary

Problems solved by technology

However, when the wind direction of this device is opposite, the force of the typhoon is very large. If it cannot fall off at that moment, the corresponding off-line effect will not be achieved.

The existing off-line protection pole device of the transmission line tower structure only considers the stress in one direction, which is not suitable for the situation of multi-directional force, or the set critical condition when off-line cannot be adjusted, and the structure is not simple enough , high cost, inconvenient disassembly and assembly, and the wires failed to fall off in time when the typhoon came, etc.

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