发明名称 |
OUTBREAKING DEVICE OF SHIELD EXCAVATOR |
摘要 |
PURPOSE:To make easily outbreak-excavation even if a bedrock is a hard soil layer or a sand gravel layer mixed with cobbl stone and to make it possible to ensure a sufficient amount of outbreak and durability. CONSTITUTION:A roller bit 13 having a plurality of disk-like blades 13a are provided to a bearing body 15 located around the outermost peripheral surface section of a revolving cutter heard 5 and sliding in the direction of the radius with the expansion of a hydraulic jack 18 in a rotatable manner in a state to incline the axial center against a driving direction. The ends of the blades of the roller bit 13 are projected and recessed from a normal excavation face 24 of the cutter head 5 with the hydraulic jack 18. |
申请公布号 |
JPH0782988(A) |
申请公布日期 |
1995.03.28 |
申请号 |
JP19930225703 |
申请日期 |
1993.09.10 |
申请人 |
HITACHI CONSTR MACH CO LTD;SEKIYU SAKUSEIKI SEISAKU KK |
发明人 |
HOSOYA YOSHISHIGE;ISHIKAWA YASUAKI;YOSHIDA TAKESHI;TAMACHI NOBUYOSHI;KUMAKURA SHIGERU |
分类号 |
E21D9/06;E21D9/08;E21D9/087;(IPC1-7):E21D9/08 |
主分类号 |
E21D9/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|