Patent ID: 11891892
Assignee: CHENGDU XINHAO FOUNDATION ENGINEERING CO., LTD.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 2:
3. The square pile drill bit of claim 2, wherein the power driving device comprises the power transmission shaft, a first connecting square head, a lifting pressure plate and a pressure conducting plate, the power transmission shaft is in a center of the box body, the power transmission shaft is rotatably connected with the box body via a bearing, the bearing has upper and lower sides respectively including a first bearing pressure plate and a second bearing pressure plate, the first bearing pressure plate and the second bearing pressure plate are fixedly connected with the box body, the box body has an upper end connected with the lifting pressure plate, the power transmission shaft has an upper outer wall with a shoulder, the shoulder is in the lifting pressure plate, the shoulder includes the pressure conducting plate, the pressure conducting plate is fixedly connected to the box body, and the power transmission shaft is fixedly connected with the first connecting square head.