HYDRAULIC PULSE PERCUSSION APPARATUS Russian patent published in 2001 - IPC

FIELD: procedures demanding application of instantaneous power efforts such as soil compaction and so on. SUBSTANCE: instantaneous action of hydraulic pulse percussion apparatus is realized due to discharge of hydraulic accumulator providing liquid supply at instantaneous opening of main cock-type hydraulic distributor driven by means of rotary hydraulic motor. Percussion is performed by means of piston with striker arranged in massive movable cylinder. Displaced liquid is used for charging hydraulic accumulator. In order to provide instantaneous operation of hydraulic distributor apparatus includes starting mechanism with ball catch. EFFECT: simplified design providing pulse feed of liquid. 8 cl, 7 dwg