公开(公告)号：EP1601500A1

公开(公告)日：2005-12-07

申请号：EP04713560.3

申请日：2004-02-23

申请人： Sandvik Tamrock Oy

发明人： KOSKIMÄKI, Antti ,  KESKINIVA, Markku ,  MÄKI, Jorma ,  ESKO, Mauri ,  AHOLA, Erkki ,  HELIN, Aimo

IPC分类号： B25D9/16

CPC分类号： B25D9/18 ,  B25D9/20 ,  B25D2209/005

摘要： The invention relates to a control valve, a percussion device and a method of controlling a working cycle of a percussion device. A percussion device (1) for breaking rock includes an impact element (8) controlled by a control valve (2). The control valve includes a control element (5) arranged to control channels (7b) leading to a working pressure surface (9) of the impact element (8). The control element, during a working cycle of the control valve, is arranged to open and close pressure channels at several connecting moments so that during one working cycle of the valve, several impact pulses are arranged to be produced.

公开(公告)号：EP1503883A1

公开(公告)日：2005-02-09

申请号：EP02774808.6

申请日：2002-11-07

申请人： Sandvik Tamrock Oy

发明人： RANTALA, Esa ,  HEINONEN, Jarmo ,  KOSKIMÄKI, Antti

IPC分类号： B25D9/18

CPC分类号： B25D9/18

摘要： The invention relates to a percussion device comprising two percussion pistons alternately making a percussion motion and a control valve for controlling the percussion pistons. The control valve (7) comprises a slide (8) affected by a force so that the slide is generally in a first position, but moves at the end of the percussion motion of the first percussion piston from the first position to a second position and correspondingly back to the first position at the end of the percussion motion of the second percussion piston (4).

公开(公告)号：EP1594658A1

公开(公告)日：2005-11-16

申请号：EP04713565.2

申请日：2004-02-23

申请人： Sandvik Tamrock Oy

发明人： KOSKIMÄKI, Antti

IPC分类号： B25D9/16

CPC分类号： B25D9/18 ,  B25D9/20 ,  B25D2209/005

摘要： The invention relates to a control valve, a percussion device and a method of controlling a working cycle of a percussion device. The percussion device (1) for breaking rock includes an impact element (8) whose working cycle is controlled by a control valve (2). The control valve (2) includes a control element (5) arranged to control channels (7b) leading to working pressure surfaces (9) of the impact element (8). The control valve (2) includes two or more parallel working pressure channels (21a, 21b) which the control element (5) is arranged to open simultaneously when the control element (5) is moved in one control direction.

公开(公告)号：EP1601499A1

公开(公告)日：2005-12-07

申请号：EP04713559.5

申请日：2004-02-23

申请人： Sandvik Tamrock Oy

发明人： KOSKIMÄKI, Antti ,  KESKINIVA, Markku ,  MÄKI, Jorma ,  AHOLA, Erkki

IPC分类号： B25D9/16

CPC分类号： B25D9/18 ,  B25D9/20 ,  B25D2209/005

摘要： The invention relates to a control valve, a percussion device and a method of controlling a working cycle of a percussion device. The percussion device (1) used for breaking rock comprises an impact element (8), which is controlled by a control valve (2). The control valve comprises a control element (5), which is arranged to control channels (7b) leading to a working pressure surface (9) of the impact element (8). The movement of the control element to its extreme position is arranged to form a closed pressure space, where pressure medium compresses and converts kinetic energy of the control element into pressure energy. The pressure energy is re-converted into kinetic energy and utilized when the control element changes its direction.

公开(公告)号：EP1451444A1

公开(公告)日：2004-09-01

申请号：EP02783135.3

申请日：2002-12-05

申请人： Sandvik Tamrock Oy

发明人： SAHA, Heikki ,  KESKINIVA, Markku ,  KOSKIMÄKI, Antti ,  RANTALA, Esa ,  PÖYSTI, Tapani ,  PELTONEN, Vesa ,  NIEMI, Jaakko ,  KEMPPAINEN, Timo ,  UITTO, Vesa ,  LEMMETTY, Pauli

IPC分类号： E21B44/00

CPC分类号： E21B44/06 ,  E21B44/08

摘要： A method and an equipment for controlling the operation of a rock drilling apparatus, which rock drilling apparatus (1) comprises a percussion device (4) for producing impact energy to a tool of the rock drilling apparatus (1), a rotating device (5) for rotating the tool (7) in a drill hole, a feeding device (9) for feeding the tool (7) in the drill hole and a flushing device (11) for supplying flushing agent through the toool (7) and the bit (8) for flushing loose drilling waste from the hole. The feed force (FF) and the percussion power (PP) are determined and the relation between the feed force (FF) and the percussion power (PP) is adjusted to a targeted operation area within an upper and a lower limit.

公开(公告)号：EP1399298A1

公开(公告)日：2004-03-24

申请号：EP02722313.0

申请日：2002-05-07

申请人： Sandvik Tamrock Oy

发明人： KOSKIMÄKI, Antti

IPC分类号： B25D9/26

CPC分类号： B25D9/26 ,  B25D9/18 ,  B25D2250/221

摘要： A method for controlling the operating cycle of an impact device, and an impact device. Percussion piston position is measured using a sensor (11) from which the measurement data is transmitted to a control unit (12) of the impact device, which in turn controls an electrically driven control valve (10). According to an embodiment, the electrically driven control valve directly controls the pressure medium flows on the working pressure surfaces of the percussion piston. According to another embodiment the impact device comprises a control slide (6) that is movable in a reciprocating manner, the position of the control slide determining the flows of the pressure medium onto the working pressure surfaces of the percussion piston. The electrically driven control valve thus guides the control slide by supplying pressure medium to the working pressure surfaces (6a, 6b) of the control slide.