公开(公告)号：EP2925949A4

公开(公告)日：2016-07-20

申请号：EP13859021

申请日：2013-10-30

申请人： ATLAS COPCO ROCK DRILLS AB

发明人： JOHANSSON THOMAS

IPC分类号： E21B1/26 ,  B25D9/12 ,  B25D9/26

CPC分类号： B25D9/26 ,  B25D9/12 ,  B25D2250/131 ,  B25D2250/231

摘要： A percussion device for a hydraulic rock drilling machine (1) including, inside a cylinder (4), a to and fro moveable impact piston (3), which is provided with a land portion (12) for cooperation with a braking recess (11) in the cylinder (4) for the establishment of a braking chamber in advanced positions of the impact piston, wherein a throttle slit (17) is arranged to be established between the land portion (12) and the braking recess (11). A pressure channel (14), being connected to a pressure medium source, is arranged to debouch in the cylinder (4) between the piston guiding device (6) and a position of the land portion (12) in a most advanced position of the impact piston (3). The invention also concerns a method and a hydraulic rock drilling machine.

公开(公告)号：EP2925491A4

公开(公告)日：2016-07-27

申请号：EP13859488

申请日：2013-11-22

申请人： ATLAS COPCO ROCK DRILLS AB

发明人： JAKOBSSON ERIK ,  JOHANSSON THOMAS

IPC分类号： B25D9/14 ,  E21B1/26 ,  F16K27/00

CPC分类号： B25D9/20 ,  B25D9/12 ,  B25D9/18 ,  F15B13/02 ,  F16K27/041

摘要： A device in a hydraulic rock drilling machine (1) has a distribution valve (7, 7′, 7″) for controlling hydraulic flow to different parts of the rock drilling machine. The distribution valve has a valve body (8, 8′, 8″) which moves to and from in an axial direction inside a valve chamber (33). The valve chamber is limited in axial direction by two valve end walls (10, 11; 10′, 11′; 10″, 11″). One of the valve end walls is movable in an axial direction against an abutment (12, 12″) to define an end position for the valve body, and a pressing device (13, 13′, 13″) is provided for pressing at least one of the valve end walls against the abutment. A rock drilling machine includes the device.

摘要翻译： 一种液压凿岩机（1）中的装置，包括与凿岩机相连的排放阀（7,7'，7“），用于控制到凿岩机的不同部分的液压流，其中分配阀包括 一个阀体（8,8'，8“），其可以在阀室（33）内沿轴向移动地布置，并且其中所述阀室在轴向上被两个阀端壁（10,11; 10'，11; 10“，11”）。 其中一个阀门端壁可以沿轴向方向抵靠着支座（12,12“）移动，从而限定阀体的终端位置，而压紧装置（13,13'，13”）是 布置成压靠所述阀端壁中的所述至少一个抵靠所述基座。 本发明还涉及一种凿岩机。