Sovitelma kallionporauslaitteen vinssin ohjaamiseksi

PCT No. PCT/FI96/00238 Sec. 371 Date Nov. 19, 1997 Sec. 102(e) Date Nov. 19, 1997 PCT Filed Apr. 30, 1996 PCT Pub. No. WO96/36554 PCT Pub. Date Nov. 21, 1996An arrangement for controlling a winch cable connected to rock drilling equipment, the arrangement including the winch; a pressure fluid motor...

Full description

Saved in:
Bibliographic Details
Main Author ENLUND,PENTTI
Format Patent
LanguageFinnish
Swedish
Published 27.01.1997
Edition6
Subjects
CAPSTANS
HAULING
HOISTING
HOISTS
LIFTING
PERFORMING OPERATIONS
TACKLES, e.g. PULLEY BLOCKS
TRANSPORTING
WINCHES
Online AccessGet full text

Cover

More Information
Summary:PCT No. PCT/FI96/00238 Sec. 371 Date Nov. 19, 1997 Sec. 102(e) Date Nov. 19, 1997 PCT Filed Apr. 30, 1996 PCT Pub. No. WO96/36554 PCT Pub. Date Nov. 21, 1996An arrangement for controlling a winch cable connected to rock drilling equipment, the arrangement including the winch; a pressure fluid motor arranged to operate the winch; a pressure fluid pump for operating the pressure fluid motor; a pressure-controlled pressure relief valve installed between a pair of pressure fluid channels connected to the pressure fluid motor for setting a counterpressure of the pressure fluid motor when pulling the cable off a drum; and control means for controlling counterpressure of the pump; wherein the pump is a pressure-controlled volume flow pump and the control means comprise an adjusting device with which a control pressure prevailing in a control channel of the pressure relief valve can be adjusted for setting a limit pressure of the pressure relief valve and thus the counterpressure of the pressure fluid motor.
Bibliography:Application Number: FI19950002467