Title:
破砕装置などの液圧作動式衝撃装置に関する装置
Document Type and Number:
Japanese Patent JP4376994
Kind Code:
B2
Abstract:
The invention relates to an arrangement in connection with a hydraulically operated impact device, such as a breaking apparatus, the impact device comprising a percussion piston (2), means 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 (2). It consists of sleeve-shaped pressure chambers (6a, 6b) that are separated by a sleeve-like diaphragm (11) arranged between a frame (5) and a sleeve (9). The pressure chambers (6a) and (6b) are formed such that the inner circumference of the sleeve (9) placed around the frame and the outer circumference of the frame (5) are provided with recesses opposite one another.
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Inventors:
Ilkka Niemi
Application Number:
JP8524499A
Publication Date:
December 02, 2009
Filing Date:
March 29, 1999
Export Citation:
Assignee:
SANDVIK MINING AND CONSTRUCTION OY
International Classes:
B25D9/14
Domestic Patent References:
| JP56035801A |
Attorney, Agent or Firm:
Takao Katori