Three-dimensional laser scanner supporting device for surveying and mapping

The invention discloses a three-dimensional laser scanner supporting device for surveying and mapping. The three-dimensional laser scanner supporting device comprises a triangular supporting mechanism, a contraction protection mechanism and a blowback buffering mechanism. The triangular supporting mechanism comprises a cylinder body and a supporting assembly, and the supporting assembly comprises a pressure sensor and a telescopic supporting leg; the contraction protection mechanism comprises a protection cylinder; the blowback buffer mechanism comprises a high-pressure gas cylinder, a breather pipe, a gas ejector pipe, a driving motor and a rotating frame. When the pressure sensor detects that the device topples over, the driving motor drives the rotating frame to rotate by a preset angle, so that the two gas spraying pipes rotate to one side to be toppled over, and in the rotating process, the three-dimensional laser scanner rapidly shrinks to the protective cylinder to be prevented from colliding with the