Tool driving or impacting – Impacting devices – Hammer head constitutes piston of drive motor
Patent
1999-03-11
2000-08-22
Vo, Peter
Tool driving or impacting
Impacting devices
Hammer head constitutes piston of drive motor
91276, 173204, 173212, B25D 900
Patent
active
061056863
ABSTRACT:
The invention relates to an arrangement in connection with a hydraulically operated impact device, such as a breaking apparatus. The impact device includes a percussion piston, conduits for feeding pressure fluid into and out of the impact device, and a pressure accumulator. According to the inventive idea, the pressure accumulator is formed as an annular structure surrounding the percussion piston. It consists of sleeve-shaped pressure chambers that are separated by a sleeve-like diaphragm arranged between a frame and a sleeve. The pressure chambers are formed such that the inner circumference of the sleeve placed around the frame and the outer circumference of the frame are provided with recesses opposite one another.
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Calve Jim
Tamrock Oy
Vo Peter
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