Impact hammer and control arrangement therefor

Details Impact hammer and control arrangement therefor Impact hammer and control arrangement therefor

B - Operations, Transporting

25

D

B25D 9/12 (2006.01)

Patent

CA 2057883

2057883 9117023 PCTABS00008 Hydraulic hammers are normally controlled by an actuating valve (32) which controls the flow of fluid from a source (27) of pressurized fluid to the hydraulic hammer. During certain periods of operation, the actuating valve totally blocks communication of fluid to the hydraulic hammer (10) thereby causing the fluid from the source (27) of pressurized fluid to be expelled through a relief valve (59). The subject hydraulic hammer and control arrangement therefor includes an accumulator (58) for storing the pressurized fluid from the source of pressurized fluid (27) during periods of fluid blockage by the actuating valve and for supplementing the flow of fluid from the source of pressurized fluid when the actuating valve is communicating pressurized fluid to the hydraulic hammer. This increases the overall efficiency thereof.

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