-
公开(公告)号：EP1498576A1
公开(公告)日：2005-01-19
申请号：EP02722785.9
申请日：2002-04-25
发明人： NOZAKI, Satoshi , ABE, Takashi , ARAI, Osamu , ARAI, Kazuhiro
IPC分类号： E21B11/04
摘要： Locking elements 3d and 3j are provided at an inner member 3 connected to a kelly bar 1, and a locking element bearing plate 6f is provided at an outer member 6. The outer member 6 includes a cylindrical bucket 7 and a grab bucket 8 housed inside the cylindrical bucket 7. When an excavating tool 2 is in its most contracted state, the inner member 3 is rotated forward to lock the locking elements 3d and 3j at the locking element bearing plate 6f, thereby disallowing relative vertical movement of the inner member 3 and the outer member 6. As the excavating tool is rotated by applying a force to the kelly bar 1 along the lifting direction in this state, an excavating operation can be executed while applying a load smaller than the load of the excavating tool 2. As a result, it becomes possible to execute an excavating operation with a large excavating tool in conjunction with an earth drill having a small drive force. Projections 3k provided at the outer circumference of the inner member 3 are fitted at guide rails extending along the longitudinal direction and provided at the inner circumference of the second member 5 so as to be allowed to move up/down freely. Thus, the grab bucket 8 having an underground obstacle grabbed therein can be rotated to remove the underground obstacle.
摘要翻译： 锁定元件3d和3j设置在与凯利杆1连接的内部构件3处，并且锁定元件支承板6f设置在外部构件6处。外部构件6包括容纳在内部的圆筒形桶7和抓斗8 当挖掘工具2处于最大收缩状态时，内部构件3向前旋转以将锁定元件3d和3j锁定在锁定元件支承板6f处，从而不允许内部构件3的相对垂直运动 和外部构件6.当在这种状态下通过向提升方向施加力而使挖掘工具旋转时，可以在施加小于挖掘工具2的载荷的载荷的同时执行挖掘操作。作为 结果，与具有小的驱动力的地钻相结合，可以用大型挖掘工具执行挖掘操作。 设置在内部构件3的外周的突起3k装配在沿着纵向方向延伸的导轨上，并设置在第二构件5的内周，以允许自由上下移动。 因此，可以旋转具有抓住其中的地下障碍物的抓斗8，以移除地下障碍物。
-
公开(公告)号：EP1498576B1
公开(公告)日：2007-12-26
申请号：EP02722785.9
申请日：2002-04-25
发明人： NOZAKI, Satoshi , ABE, Takashi , ARAI, Osamu , ARAI, Kazuhiro
IPC分类号： E21B11/04
摘要： A drilling device (2) for an earth drill, wherein locking bodies (3d, 3j) are provided on an inner member (3) connected to a kelly-bar (1) and a locking body receiving part (6f) is provided on an outer member (6), the outer member (6) comprises a cylindrical bucket (7) and an openable bucket (8) contained in the cylindrical bucket (7), the locking bodies (3d, 3j) are locked to the locking body receiving part (6f) by rotating the inner member (3) in forward direction when the drilling device (2) is in the fully retracted state to prohibit the vertical movement of the inner member (3) relative to the outer member (6), a force in pull up direction is given to the kelly-bar (1) to rotate the drilling device with a load smaller than the weight of the drilling device (2) applied to a drilled object by rotating the drilling device so that a drilling can be performed using an earth drill with a small drive force and the large drilling device (2), and a projection (3k) provided on the outer periphery of the inner member (3) is movably fitted in vertical direction to a guide rail vertically installed on the inner periphery of a second member (5) so that a ground obstacle can be removed by rotating in the state of being held by the openable bucket (8).
-
搜索结果
2 条记录 (耗时 0.009 秒)
