Title:
【発明の名称】削岩機への空気供給制御方法および装置
Document Type and Number:
Japanese Patent JPH06507457
Kind Code:
A
Abstract:
PCT No. PCT/FI92/00143 Sec. 371 Date Nov. 12, 1993 Sec. 102(e) Date Nov. 12, 1993 PCT Filed May 5, 1992 PCT Pub. No. WO92/20898 PCT Pub. Date Nov. 26, 1992.A method and an arrangement for controlling the supply of air into a rock drilling machine. In the method, the air supply of an air compressor in a power unit operated by a diesel engine is adjusted so that when the percussion pressure of the percussion device of the rock drilling machine is high, the amount of air supplied by the compressor is small, and vice versa. In the arrangement, the pressure fluid pump of the hydraulic motor of the compressor is an adjustable-displacement pump, the volume flow of the pressure fluid supplied by the pump being adjusted inversely proportionally to the pressure of the supply conduit of the percussion device of the rock drilling machine.
Inventors:
Enlund, Penty
Tantalimeki, Cali
Tantalimeki, Cali
Application Number:
JP50857392A
Publication Date:
August 25, 1994
Filing Date:
May 05, 1992
Export Citation:
Assignee:
Thamrock Oy
International Classes:
E21B6/00; E21B21/00; E21B21/08; E21B21/14; E21B44/06; F02B3/06; (IPC1-7): E21B21/08; E21C7/02
Attorney, Agent or Firm:
Tadashi Hagino (3 outside)