Rotary excavating pile with sediment detection function

The utility model discloses a rotary excavating pile with sediment detection, which belongs to the technical field of rotary excavating equipment and comprises a rotary excavating cylinder, a connecting disc is arranged on the bottom surface of the rotary excavating cylinder, and a connecting rod is coaxially fixed in the middle of the top surface of the connecting disc. The lower end of the connecting rod penetrates through the connecting disc and the interior of the rotary excavating cylinder and is slidably connected with a first sleeve, a first toothed bar is arranged on the inner side of the first sleeve, a gear is connected to one side of the first toothed bar in a meshed mode, a second toothed bar is connected to the outer side of the gear in a meshed mode, and a second sleeve is fixed to one end of the second toothed bar. A second sleeve is fixed to the other end of the gear, a measuring cylinder is slidably connected to the inner side of the first sleeve, scales are arranged on the outer side of the