Cast-in-place pile bottom sediment detection device

The utility model relates to the technical field of pile bottom sediment detection devices, in particular to a cast-in-place pile bottom sediment detection device which comprises a vertical rod, a movable iron cylinder and a circular iron disc, the movable iron cylinder is fixedly connected to the upper end of the circular iron disc, and the outer wall of the vertical rod is sleeved with the movable iron cylinder and the circular iron disc in a sliding mode. A notch is formed in the side wall of one end of the vertical rod, and a ball hole is formed in the side wall of the other end. Plain ends are formed in the inner walls of the movable iron cylinder and the circular iron disc, the side walls of the plain ends are in sliding connection with the outer walls of the notches, a channel is formed in the side wall of one end of the movable iron cylinder, and a small steel ball is arranged in the channel through a spring; by using the detection device, the hole bottom sediment measurement efficiency is high, and w