公开(公告)号：US4056154A

公开(公告)日：1977-11-01

申请号：US701761

申请日：1976-07-02

申请人： George John Tamaro

发明人： George John Tamaro

IPC分类号： E02D5/20 ,  E02D17/13 ,  E02D17/148

CPC分类号： E02D5/20 ,  E02D17/13

摘要： There is disclosed a tool for squaring off and reaming the walls of an elongated trench excavation which has been previously formed utilizing the slurry trench excavation method. The tool is constituted by a pair of spaced parallel steel beams which are connected and maintained in their space relation by a plurality of connecting steel lattice bars. The lower edges of the beams and the lower connecting lattice bars have cutting and smoothing edges formed thereon for smoothing and squaring the walls of the elongated excavation. The tool may be left in the last excavation of a series and serve as the connected H-beam pair as disclosed in the article appearing in the October, 1973 issue of Roads and Streets Magazine entitled "Slurry Wall, Special Equipment Solved `No Room` Excavation Problem".

摘要翻译： 公开了一种用于使用浆料沟槽挖掘方法预先形成的细长沟槽挖掘的平面和扩孔的工具。 该工具由一对隔开的平行钢梁构成，它们通过多个连接的钢格栅杆连接并保持其空间关系。 梁的下边缘和下连接格子条具有形成在其上的切割和平滑边缘，用于平滑和平坦化细长挖掘的壁。 该工具可能留在一系列的最后一次挖掘中，并作为连接的H型梁对，如1973年10月号“道路与街道杂志”题为“泥浆墙，特殊设备解决的无房间” 挖掘问题“。

公开(公告)号：US4023629A

公开(公告)日：1977-05-17

申请号：US699783

申请日：1976-06-25

申请人： David L. Watson

发明人： David L. Watson

IPC分类号： E21B10/32 ,  E02D17/148

CPC分类号： E21B10/32

摘要： An underreamer includes a housing and a plurality of underreamer doors, each including a toggle mechanism for selectively extending and retracting the doors. Upon activation of the toggle mechanism thereby extending the doors, the doors are pivoted outwardly from the housing and the tops of the doors are simultaneously moved downwardly. In this manner the overall vertical height of an underreamer adapted to form a given diameter excavation may be substantially reduced.

摘要翻译： 一个扩音器包括一个壳体和多个扩孔门，每个门都包括一个用于选择性地延伸和缩回门的肘节机构。 在启动肘节机构从而延伸门时，门从壳体向外枢转，并且门的顶部同时向下移动。 以这种方式，可以显着减少适于形成给定直径挖掘的扩孔器的总垂直高度。