GENERATION OF DYNAMIC FORCES IN EXCAVATOR MECHANISM Russian patent published in 2014 - IPC E02F9/20 

FIELD: mining.

SUBSTANCE: invention relates to mining particularly to openworking of rocks. Proposed method comprises setting of the drive operating and maximum possible speeds, measurement of current force and its comparison with preset magnitude. Note here that two types of zones in excavation face are localised by coordinates of gotten blast wells and actual parameters of drilling-and blasting jobs that differ in probability of maximum dynamic load expectation. At the first zone, that of probable expectation of maximum dynamic loads, located around gotten blast wells with accrual parameters of drilling-and blasting jobs not complying with design values, drive speed is changed from maximum to operating magnitude. At second zone, that of probable expectation of maximum dynamic loads and localised by the position of gotten well spacing with actual parameters of drilling-and blasting jobs, after confirmation of maximum preset digging forces, drive operating speed is set. If maximum loads are not confirmed in the next excavation cycles, drive speed is changed to maximum value. Drive maximum speed is used beyond the zones of maximum dynamic load expectation.

EFFECT: higher efficiency of excavation.