Clear hole of pile foundation pore -forming secondary structure

The utility model discloses a clear hole of pile foundation pore -forming secondary structure, steel including setting up on pile foundation pore -forming upper portion protects a section of thick bamboo, and the pipe passes the lower part that the steel protected a section of thick bamboo and stretched into the pile foundation pore -forming, and the pipe upper end is equipped with the slag notchthat is located ground handling bench side, and the slag notch below sets up and connects the sediment basket, the upper end and the air compressor machine of tuber pipe are connected, and the lower extreme of tuber pipe stretches into the lower extreme of pipe. The utility model discloses construction convenience, effectual. 本实用新型公开了种桩基成孔二次清孔构造，包括设置在桩基成孔上部的钢护筒，导管穿过钢护筒并伸入桩基成孔的下部，导管上端设有位于地面工作台上方的出渣口，出渣口下方设置接渣篮；风管的上端与空压机连接，风管的下端伸入导管的下端。本实用新型施工方便、效果好。