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Combined pile drill rod, drilling tool and combined pile manufacturing method
The invention relates to a combined pile drill rod, a drilling tool and a combined pile manufacturing method, and belongs to the technical field of pile forming equipment. The drill rod comprises a rod body, a drill bit is connected to the end of the rod body, a liquid outlet is formed in the drill bit, a plurality of rotating cutter sets are arranged in the length direction of the rod body at intervals, rotating cutters in each rotating cutter set are circumferentially distributed on the rod body, the rotating cutters are connected to the rod body through a supporting seat and can rotate on the supporting seat, a first blocking piece and a second blocking piece are arranged on the supporting seat, and the rotating cutters can make contact with the first blocking piece to form an expansion state after rotating in the forward direction, and the rotating radius of the rotating cutters in the expansion state is D1; and the rotating cutters can be in contact with the second blocking piece to form a contraction state after rotating in the reverse direction, the rotating radius of the rotating cutters in the contraction state is D2, and D1 is larger than D2.
本发明涉及一种组合桩钻杆、钻具及组合桩制作方法，属于成桩设备技术领域，该钻杆包括杆体，杆体的端部连接钻头，钻头上设有出液口，在所述杆体长度方向间隔设有多个旋转刀组，每个旋转刀组内的旋转刀在杆体上呈圆周分布，旋转刀通过支撑座连接在杆体上，且能够在支撑座上旋转，支撑座上设有第一挡件和第二挡件，旋转刀正向旋转之后能够与第一挡件接触形成扩张状态，在扩张状态下旋转刀的旋转半径为D1，旋转刀反向旋转之后能够与第二挡件接触形成收缩状态，在收缩状态下旋转刀的旋转半径为D2，其中D1>D2。
Combined pile drill rod, drilling tool and combined pile manufacturing method
The invention relates to a combined pile drill rod, a drilling tool and a combined pile manufacturing method, and belongs to the technical field of pile forming equipment. The drill rod comprises a rod body, a drill bit is connected to the end of the rod body, a liquid outlet is formed in the drill bit, a plurality of rotating cutter sets are arranged in the length direction of the rod body at intervals, rotating cutters in each rotating cutter set are circumferentially distributed on the rod body, the rotating cutters are connected to the rod body through a supporting seat and can rotate on the supporting seat, a first blocking piece and a second blocking piece are arranged on the supporting seat, and the rotating cutters can make contact with the first blocking piece to form an expansion state after rotating in the forward direction, and the rotating radius of the rotating cutters in the expansion state is D1; and the rotating cutters can be in contact with the second blocking piece to form a contraction state after rotating in the reverse direction, the rotating radius of the rotating cutters in the contraction state is D2, and D1 is larger than D2.
本发明涉及一种组合桩钻杆、钻具及组合桩制作方法，属于成桩设备技术领域，该钻杆包括杆体，杆体的端部连接钻头，钻头上设有出液口，在所述杆体长度方向间隔设有多个旋转刀组，每个旋转刀组内的旋转刀在杆体上呈圆周分布，旋转刀通过支撑座连接在杆体上，且能够在支撑座上旋转，支撑座上设有第一挡件和第二挡件，旋转刀正向旋转之后能够与第一挡件接触形成扩张状态，在扩张状态下旋转刀的旋转半径为D1，旋转刀反向旋转之后能够与第二挡件接触形成收缩状态，在收缩状态下旋转刀的旋转半径为D2，其中D1>D2。
Combined pile drill rod, drilling tool and combined pile manufacturing method
一种组合桩钻杆、钻具及组合桩制作方法
SONG YIZHONG (author) / LIU BIN (author) / LI JIANMING (author) / MI CHUNRONG (author) / CHENG HAITAO (author) / CUI HONGTAO (author) / CHANG GUORUI (author) / LIANG HONGJUN (author) / LYU ZHE (author) / MA YUE (author)
2021-09-28
Patent
Electronic Resource
Chinese
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