Foundation engineering sediment thickness detector

The utility model relates to the technical field of engineering construction equipment, and discloses a foundation engineering sediment thickness detector which comprises a first main support, a controller is arranged on the first main support, a transmission adjusting assembly is arranged on the first main support, and the transmission adjusting assembly comprises an adjusting part arranged in the first main support. A detection part is arranged on the first main support, the adjusting part comprises a first inner bearing, and the first inner bearing is fixedly installed on the inner wall of the first main support, the adjusting part is arranged on the first main support, a second conical tooth inside is driven to rotate by rotating a first rotary knob on the first main support, then a first conical tooth is driven to rotate, and therefore a lead screw is driven to rotate; the rotary knob is arranged on the main support and drives the inner supporting column connected to the outer wall of the lead screw to b