CONTROL METHOD FOR OPERATION CYCLE OF HYDRAULIC PERCUSSION MACHINE Russian patent published in 2005 - IPC

FIELD: mining and building, particularly control methods for hydraulic driven pulse systems, to design hydraulic percussion machines.

SUBSTANCE: method involves permanently connecting return stroke chamber to system comprising liquid source and accumulator; connecting forward stroke chamber alternately to liquid source or to drain means adapted to discharge liquid into vessel through hydraulic distribution means including the first and the second control chambers, wherein forward stroke chamber is connected to liquid source in response to a control signal which controls striker shifting into forward stroke, and forward stroke chamber is connected to drain means in response to a control signal which controls striker shifting into return stroke after striker fixation; exerting permanent additional force upon the second control chamber connected to upper striker location sensor. Above alternate connection between forward stroke chamber and liquid source or drain means is carried out by means of quick-acting valve connected to liquid source, to drain means and to the first chamber of hydraulic distribution means. Above control signals for striker shifting into forward or return strokes are transmitted to quick-acting valve from control unit. Time delays for control signal transmission are set manually or with the use of control unit to provide quick-acting valve shifting relative synchronization moment set by timing sensor in accordance to operation condition sensor signal magnitude.

EFFECT: increased efficiency and operational reliability.

2 cl, 1 dwg