Pile hole diameter detection device

The utility model relates to a pile hole diameter detection device, and relates to the technical field of pile hole detection, the pile hole diameter detection device comprises a rack, a main body used for detecting the size of the hole diameter of a pile hole, a lifting assembly used for driving the main body to lift in the pile hole, and an auxiliary mechanism used for assisting the main body to lift stably, and the auxiliary mechanism comprises a limiting rod arranged on the main body; the multiple sets of guide wheels are arranged on the limiting rod in a circumferential array mode along the axis of the limiting rod, and the multiple sets of guide wheels abut against the inner hole wall of the pile hole; the adjusting assembly is arranged on the limiting rod and used for adjusting the distance between the guide wheel and the axis of the limiting rod; and the deviation adjusting assembly communicates with the multiple sets of guide wheels and is used for adjusting the distance between the multiple sets of