首页>
外国专利>
Threaded truss foundations and related systems, methods, and machines
Threaded truss foundations and related systems, methods, and machines
展开▼
机译:螺纹桁架基础和相关系统,方法和机器
展开▼
页面导航
摘要
著录项
相似文献
摘要
A machine for rotary driving screw anchors into underlying ground and related. The machine has a mast with a rotary driver and a mandrel driver oriented on a common axis. The mandrel driver passes a mandrel through the rotary driver and the screw anchor to allow the mandrel to be actuated ahead of the screw anchor while the rotary driver drives the screw anchor into the ground. Alternatively, the mandrel driver may also drive a hammering drill through the screw anchor to clear a path ahead of it through subsurface rocks.
展开▼