Title:
複数の連結モーメントを含む作動サイクルを有する打撃装置用制御弁および方法
Document Type and Number:
Japanese Patent JP4685756
Kind Code:
B2
Abstract:
The invention relates to a control valve, a percussion device and a method of controlling a working cycle of a percussion device. A percussion device ( 1 ) for breaking rock includes an impact element ( 8 ) controlled by a control valve ( 2 ). The control valve includes a control element ( 5 ) arranged to control channels ( 7 b) leading to a working pressure surface ( 9 ) of the impact element ( 8 ). The control element, during a working cycle of the control valve, is arranged to open and close pressure channels at several connecting moments so that during one working cycle of the valve, several impact pulses are arranged to be produced.
Inventors:
Koskimaki, Antti
Keskiniva, Maluk
Maki, Yoruma
Esco, Mauri
Ahora, Elkki
Hyelin, Aimo
Keskiniva, Maluk
Maki, Yoruma
Esco, Mauri
Ahora, Elkki
Hyelin, Aimo
Application Number:
JP2006502067A
Publication Date:
May 18, 2011
Filing Date:
February 23, 2004
Export Citation:
Assignee:
SANDVIK MINING AND CONSTRUCTION OY
International Classes:
B25D9/18; B25D9/20
Domestic Patent References:
| JP200037661A | ||||
| JP5346402A | ||||
| JP52150871A | ||||
| JP4325053B1 | ||||
| JP5380304A |
Attorney, Agent or Firm:
Takao Katori