Caving coal hydraulic support with large swing beam structure

Abstract

The invention discloses a caving coal hydraulic support with a large swing beam structure and is improvement of an existing caving coal hydraulic support. The caving coal hydraulic support with the large swing beam structure is mainly composed of a top beam, a telescopic beam, a shield beam, a side protecting plate, a connecting rod, a base, a thrust mechanism, a column, jacks and an operating valve. The caving coal hydraulic support with the large swing beam structure further comprises a large swing beam, the lower side of the large swing beam is hinged to a swing beam jack, the front end of the large swing beam is hinged to a hinged hole above the rear portion of the top beam, and an oil cylinder of the swing beam jack is hinged to a hinged base below the rear portion of the top beam or the base so as to form a reverse four-linkage structure. Furthermore, an inserting plate and an inserting plate jack are arranged in the large swing beam. The caving coal hydraulic support with the large swing beam structure has the advantages of being large in coal placing window and high in coal placing point, facilitating discharge of large top coal, and facilitating improvement of top coal recovery rate. When the swing beam jack is supported on the base, carrying capacity of the large swing beam can be increased, and lowering of an adjacent coal layer of the nearest coal layer can be performed conveniently.

Description

technical field [0001] The invention relates to a support device for fully mechanized coal mining face. Background technique [0002] Support equipment is an indispensable key equipment for the mechanization of fully mechanized mining, which is related to the safety of personnel in the working face, the normal operation of machines and the improvement of miners' safe production conditions. The current support equipment for fully mechanized mining face mainly adopts caving coal hydraulic support, which is composed of top beam, telescopic beam, cover beam, side guard plate, tail beam, connecting rod, base, pushing mechanism, column, jack and operation The rear part of the top beam is connected with the front and rear connecting rods and the base through the cover beam. There is a moving mechanism inside the base. The tail beam is connected to the cover beam, and the tail beam is used for top coal caving. In the mining of thin coal seams, it is necessary to lower the gangue, a...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of low recovery rate of top-coal caving in thin coal seams and extremely close coal seams, improve the existing hydraulic caving support for top-coal caving, and design a hydraulic caving support for top-coal caving with a large swing beam structure

Images