DOUBLE ACTION COMPRESSION-VACUUM IMPACT MACHINE Russian patent published in 2019 - IPC E02D7/02 E21C37/22 B25D9/14 

FIELD: construction; mining.

SUBSTANCE: invention relates to mining and construction – to impact machines, is used in breaking monoliths, for destruction of obsolete foundations during reconstruction of buildings and pile driving, as well as in seismic survey as source of excitation of seismic waves at shallow depths. Machine comprises housing and hammer arranged therein, forming lower and upper chambers, vacuum compressor, hammer retainer made in the form of a magnet and installed in the housing, a rotary distributor of the working medium with a gate, constantly connected to the atmosphere and alternatively with a compression channel with a vacuum compressor. Working fluid depressurisation check valve is connected to the lower part of the housing. Said rotary distributor of working medium located in upper chamber is connected alternately by vacuum channel with vacuum compressor, and its gate, rigidly connected with bottom of rotary distributor of working medium in its lower part and equipped with rotary switch with torsion spring, is installed with possibility of alternate connection of upper chamber with compression and vacuum channels of vacuum compressor. Lower chamber is constantly connected to atmosphere. Above check valve is installed above the hammer in its lower position, and the hammer retainer is mounted on the mounting disc and spring-loaded relative to it.

EFFECT: higher efficiency and reliability of machine operation.

1 cl, 2 dwg