公开(公告)号：EP1102917B1

公开(公告)日：2003-10-08

申请号：EP99936645.3

申请日：1999-08-05

申请人： Sandvik Tamrock Oy

发明人： PÖYSTI, Tapani ,  NIEMI, Jaakko ,  RÄMÖ, Reijo ,  MUUTTONEN, Timo

IPC分类号： E21B44/00

CPC分类号： E21B44/06

摘要： The invention concerns an arrangement for controlling a hydraulic rock drilling device. The adaptation includes a pressure ratio valve (18; 18') that is used for adjusting the relation between the pressures in the pressure channel leading to the percussion device and/or other actuator, such as a shank stabilizer (28), and the pressure channel leading to the feed mechanism. The pressure ratio valve (18; 18') is arranged to keep the relation between the pressures of the actuator and the feed mechanism constant over the normal drilling range.

公开(公告)号：EP1102917A1

公开(公告)日：2001-05-30

申请号：EP99936645.3

申请日：1999-08-05

申请人： Sandvik Tamrock Oy

发明人： PÖYSTI, Tapani ,  NIEMI, Jaakko ,  RÄMÖ, Reijo ,  MUUTTONEN, Timo

IPC分类号： E21B44/00

CPC分类号： E21B44/06

摘要： The invention concerns an arrangement for controlling a hydraulic rock drilling device. The adaptation includes a pressure ratio valve (18; 18') that is used for adjusting the relation between the pressures in the pressure channel leading to the percussion device and/or other actuator, such as a shank stabilizer (28), and the pressure channel leading to the feed mechanism. The pressure ratio valve (18; 18') is arranged to keep the relation between the pressures of the actuator and the feed mechanism constant over the normal drilling range.