IMPACT DEVICE Russian patent published in 1997 - IPC

FIELD: mining and construction equipment. SUBSTANCE: device can be used for combined crushing of rock by blasting and wedge-thrusting, also for removing barriers, etc. Device has cylinder, circular striker and system for control of fluid working body streams. Tail portion of working tool is in the form of stem passing through hole in circular striker and is provided with front and rear shoulder - anvils adapted for transmitting impact action to working tool. One of these shoulders is removable from stem. Such embodiment of device ensures transmission of intensive impacts directly to working tool in reverse stroke. EFFECT: high efficiency. 2 cl, 4 dwg