发明名称 |
ROCK DRILLING MACHINE AND AXIAL BEARING |
摘要 |
<p>The invention relates to an axial bearing and to a rock drilling machine pro-vided with an axial bearing. The axial bearing (100) comprises a first piston (20) and a second piston (21). Axial contact surfaces (60, 43a) between the pistons (20, 21) are arranged in the same pressure space (28). The same pressure fluid fed to the axial bearing acts on the contact surfaces and on working pressure surfaces of the pistons.</p> |
申请公布号 |
WO2004060617(A1) |
申请公布日期 |
2004.07.22 |
申请号 |
WO2003FI00984 |
申请日期 |
2003.12.29 |
申请人 |
SANDVIK TAMROCK OY;MUUTTONEN, TIMO;RANTALA, ESA |
发明人 |
MUUTTONEN, TIMO;RANTALA, ESA |
分类号 |
E21B1/00;E21B1/38;F16C17/04;(IPC1-7):B25D17/24;B25D17/22;B25D9/14 |
主分类号 |
E21B1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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