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1. 发明申请

US20060260849A1 Bit for excavation and compaction equipment for erecting piles, and excavation equipment provided with said bit 有权
标题翻译：钻头用于竖立桩的挖掘和压实设备，以及提供所述钻头的挖掘设备
公开(公告)号：US20060260849A1
公开(公告)日：2006-11-23
申请号：US11411580
申请日：2006-04-25
申请人： Macro Pedrelli
发明人： Macro Pedrelli
IPC分类号： E21B10/26
CPC分类号： E02D5/46 , E02D5/36 , E02D5/66 , E02D7/22
摘要： Described herein is a bit (9) for excavation and compaction equipment (1) for erecting piles, the bit (9) being provided with a central body (21), an excavation screw (24) fixed to the central body (21), and a dislocating element (40) for compaction of the walls of the excavation, a retention device (25) that can be selectively re-closed being associated to the central body (21) for preventing fall of debris beyond a leading edge (27) of the screw (24) during extraction of the bit (9), and the dislocating element (40) being mounted on a fixed portion (28) of the retention device (25), and presenting a radial development, which decreases with respect to a rotation of excavation of the excavation screw (24) for compaction of the walls (3a) of the excavation (3) during extraction of the bit (9).
摘要翻译：这里描述的是用于竖立桩的挖掘和压实设备（1）的一点（9），钻头（9）设置有中心体（21），固定到中心体（21）的挖掘螺钉（24）以及用于压实挖掘壁的位错元件（40），可以选择性地重新闭合的保持装置（25），其与中心体（21）相关联，用于防止碎片超出前缘（27）在所述钻头（9）的提取期间所述螺钉（24）的位置和所述位移元件（40）安装在所述保持装置（25）的固定部分（28）上，并且呈现出相对于在挖掘钻头（9）期间用于压实挖掘（3）的壁（3a）的挖掘螺钉（24）的旋转。

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