HYDRAULIC SYSTEM FOR MINING MACHINE CONTROL Russian patent published in 2010 - IPC E21C35/24 E02F9/22 

FIELD: mining.

SUBSTANCE: invention relates to the field of mining and may be used in designs of mining machines and other fields of machine building. Hydraulic system of mining machine control is additionally equipped with hydraulic cylinders of telescope tightening, in working manifolds of which there is a hydraulic valve installed with logical function "OR", as well as controlled check valve with control cavity, besides inlet manifolds of hydraulic valve with logical function "OR", which is installed in working manifolds of hydraulic cylinders for telescope tightening, are connected to outlet channels of hydraulic valves with logical function "OR", which are installed in outlet channels of hydraulic distributors for control of hydraulic cylinders of actuator lift and rotation, and control cavity of controlled check valve is connected to outlet channel of hydraulic valve with logical function "OR", which is installed in outlet channels of hydraulic distributor for control of hydraulic cylinder of telescope extension.

EFFECT: invention increases rigidity and reliability of support structures of mining machine actuator, improves durability of machine as a whole.

1 cl, 1 dwg