The pipeline from two hinge the sites located along a face, and two telescopic sites on lines is synthesised. Influence of a design of the hinge on losses of pressure and the central corner divergence of hinge sections on effort of its reduction is analysed. The diagramme of communication of width dredging strips of coal with capacity of a layer is offered at the set level of losses of pressure of water in hinge the pipeline and effort of its reduction.
Drilling and boring units, which include a hydraulic motor and anchoring mechanism, are used to attach the cutting machine. The schemes of water supply of the machine tool are analyzed and a rational variant is selected. The disadvantages of the known water motors are disclosed and the ways of their improvement are suggested. Recommendations on calculation of the parameters of the hydraulic motor, on the design of the anchoring mechanism and its calculation are developed. The result on the efficiency of light cutting machine with a new way of fixing its time is obtained.
