DEVICE FOR DETERMINING ENERGY CAPACITY OF ROCK DESTRUCTION Russian patent published in 2018 - IPC E21C39/00 

FIELD: mining engineering.

SUBSTANCE: device includes a bed plate, a perforated cup, a pressure and thrust punches and a loading screw with threaded nuts mounted thereon. In this case, the pressure and thrust punches are made in one piece with the corresponding threaded nuts that come into contact with the load screw in sections with threads of one direction but with different pitch. And the thread pitches on the threaded sections of the pressure and thrust punches differ by no more than 5%.

EFFECT: provided uniform loading of test rock, simplified design of the device without degrading its characteristics.

1 dwg