Three-dimensional laser scanning detector

The utility model discloses a three-dimensional laser scanning detector which comprises a fixed supporting underframe, the upper surface of the fixed supporting underframe is of a T-shaped structure and is provided with a plurality of U-shaped handles, and the front side of the upper surface of the fixed supporting underframe is provided with an inertial navigation system used for controlling work and providing a power supply. Assembly is convenient, online is convenient, single-person measurement can be achieved, full-automatic data acquisition is achieved, the scanning precision is high, the scanning range is wide, the point cloud density is accurate, the mileage precision is better, and the data acquisition speed is practical; the telescopic spring stretches out and draws back to drive the L-shaped supporting frame to slide on the outer wall of the T-shaped sliding supporting block in a reciprocating mode, when the telescopic spring conducts compression action, through the telescopic supporting block and a