Title:
削岩機制御方法および装置
Document Type and Number:
Japanese Patent JP4576085
Kind Code:
B2
Abstract:
A method and device for controlling a rock drilling machine (51) includes an impact device (5) arranged to act on a drilling tool (52), a rotation motor (7) for rotating the drilling tool (52), and a feed motor (6) for feeding the drilling tool (52) against a ground surface (53). The pressure to an inlet (30) of the rotation motor (7) is sensed, and the pressure to an inlet (32) of the feed motor (6) is reduced, for the purpose of maintaining the pressure to the rotation motor substantially constant, when the pressure to the inlet (30) of the rotation motor (7) exceeds a first predetermined value (41). When the pressure to the inlet (30) of the rotation motor (7) exceeds a second predetermined value (42), the pressure to an inlet (31) of the impact device (5) is controlled to be inversely proportional to the pressure to the inlet (30) of the rotation motor (7).
Inventors:
Eccleph, Orchestra
Application Number:
JP2001535709A
Publication Date:
November 04, 2010
Filing Date:
October 13, 2000
Export Citation:
Assignee:
Atlas Copco Rock Drills Activolag
International Classes:
E21B6/02; E21B44/00; E21B3/00; E21B44/06; F15B11/17
Domestic Patent References:
| JP62156494A |
Foreign References:
| WO1997049896A1 | ||||
| US4023626 | ||||
| US3979944 | ||||
| US4356871 | ||||
| US4440236 |
Attorney, Agent or Firm:
Takao Hamano