Shearer support device with automatic height adjustment

Abstract

The invention relates to a coal-mining combine supporting device capable of automatically adjusting the height. The coal-mining combine supporting device comprises two sets of plane mechanisms which are arranged in bilateral symmetry, wherein each plane mechanism consists of a supporting sliding shoe, a connecting plate, a single-piston rod oil cylinder and a bidirectional hydraulic lock; in each plane mechanism, the supporting sliding shoe is hinged to one end of the connecting plate; the other end of the connecting plate is hinged to one end of the oil cylinder; the other end of the oil cylinder and the middle part of the connecting plate are hinged to two positions of a traction part respectively, and hinge axes are parallel; two oil outlets of the hydraulic lock are communicated with two cavities of the oil cylinder respectively; oil inlets, corresponding to rod cavities, of the two hydraulic locks are communicated, and are connected with a pressure oil way or an oil returning way; oil inlets, corresponding to rodless cavities, of the two hydraulic locks are communicated, and are connected with the oil returning way or the pressure oil way; the oil returning way or the pressure oil way are alternately switched. The coal-mining combine supporting device overcomes the difficulty that when a coal-mining combine works in an underhand mining mode and in an overhand mining mode, the force condition of a walking system is poor due to inclination of a machine body, and further solves the problem that when scraper conveyers with different heights are used in a matching manner, the cost is increased due to frequent change of the connecting plate.

Description

technical field [0001] The invention relates to a shearer support device, in particular to a height-automatically adjustable support device for a shearer arranged on the coal wall side of a shearer fuselage, and belongs to the technical field of coal shearers. Background technique [0002] The height of the existing shearer support devices is not adjustable, so there are two problems: one is that the shearer is under poor stress conditions and serious wear and tear on the guide shoe under the upward mining state and the downward mining state , frequently damaged, causing the shearer to fall easily; second, the height of the connecting plate needs to be changed every time the shearer is equipped with different scraper conveyors, so it needs to be redesigned, and the wooden formwork is made and put into production, which costs a lot. [0003] In view of this, it is urgent to design a new shearer support device to solve the problem of poor stress on the walking system caused by...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide an automatic height-adjustable support device for a shearer, which can be automatically adjusted in height, so that the problem of poor stress on the walking system caused by the inclination of the body of the shearer can be eliminated. There is no need to change the connection board when the board is transported

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