Integrated valve bank for coal mining machine

Abstract

The invention belongs to the technical field of hydraulic pressure of a coal mining machine, and particularly relates to an integrated valve bank for a coal mining machine, which solves the problem that products such as an existing small electric traction coal mining machine or an existing thin seam electric traction coal mining machine have low machine height and small box inner space, so that a system formed by various hydraulic components is difficult to assemble in a pump box according to a conventional valve bank. The integrated valve bank comprises a right pilot operated solenoid directional valve, a multi-pass block body, a pressure gage I, a low-pressure overflow valve, a filter, a high-pressure overflow valve, a left pilot operated solenoid directional valve, a left hand hydraulic pressure-actuated directional valve, a right hand hydraulic pressure-actuated directional valve, a two-position solenoid directional valve, and a pressure gage II. The integrated valve bank for the coal mining machine has the beneficial effects that the integrated valve bank has the characteristics of multiple combined hydraulic components, compact structure, small size, convenience in adjustment and maintenance, low manufacturing cost and the like; and is particularly suitable for a hydraulic system of the small coal mining machine and the thin seam coal mining machine. The application of the coal mining machine underground shows that the integrated valve bank for the coal mining machine runs well, is convenient to operate and control, and meets the use requirements of the coal mining machine. The user maintenance expense and the production cost are reduced.

Description

technical field [0001] The invention belongs to the technical field of coal shearer hydraulics, and in particular relates to an integrated valve group for a coal shearer. Background technique [0002] At present, the electric traction shearer is driven by electric power, and some electric traction shearers realize the height adjustment of the left and right cutting drums, the lifting of the crushing drum, the retraction of the coal retaining roof, and the movement of the shearer through hydraulic transmission. Therefore, the design configuration and working performance of the hydraulic system are very important. In the design of small electric traction shearer or thin coal seam electric traction shearer, due to the low height of the machine surface and the small internal space of the box, it is difficult to assemble the valve group of the required hydraulic components in the pump box according to the conventional design. At present, this type of valve group product portfoli...

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Problems solved by technology

[0003] The present invention aims to solve the problems of the existing small electric traction shearer or thin coal seam electric traction shearer. Due to the low height of the machine surface and the small internal space of the box body, it is difficult to assemble the system composed of various hydraulic components in the pump box according to the conventional valve group. In order to solve the problems in the coal mining machine, an integrated valve group is provided

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