Title:
打撃装置の制御方法、ソフトウエア製品、打撃装置
Document Type and Number:
Japanese Patent JP4874964
Kind Code:
B2
Abstract:
A method and software product for controlling a percussion device belonging to a rock-drilling machine, and a percussion device. The impact frequency of the percussion device is set so that the percussion device forms a new compression stress wave to the tool always when reflected waves from the previous compression stress waves reach a first end of the tool. This requires that the impact frequency be set proportional to the propagation time of the stress wave, whereby the length of the used tool and the propagation velocity of the stress wave in the tool material are to be noted.
More Like This:
| WO/2021/178786 | FLUID PULSE GENERATION IN SUBTERRANEAN WELLS |
| WO/1988/005115 | PERCUSSION DEVICE |
Inventors:
Keskiniva, Maluk
Maki, Yoruma
Hyelin, Aimo
Esco, Mauri
Ahora, Elkki
Maki, Yoruma
Hyelin, Aimo
Esco, Mauri
Ahora, Elkki
Application Number:
JP2007518630A
Publication Date:
February 15, 2012
Filing Date:
June 30, 2005
Export Citation:
Assignee:
SANDVIK MINING AND CONSTRUCTION OY
International Classes:
E21B1/28; B25D9/26; E21B1/00; E21B6/00; E21B44/08; E21B
Domestic Patent References:
| JPH11182170A | 1999-07-06 | |||
| JPS611792A | 1986-01-07 |
Attorney, Agent or Firm:
Takao Katori
Koichi Kushida
Koichi Kushida