Forestry robot space positioning device and method based on laser sensing

The invention discloses a laser sensing forestry robot space positioning device and method, and relates to the technical field of positioning devices. The device comprises a robot bottom plate, a slurry storage barrel is fixedly arranged on the upper surface of the robot bottom plate, supporting legs which are evenly distributed are fixedly installed at the bottom end of the slurry storage barrel, the ends, away from the slurry storage barrel, of the supporting legs are fixedly connected with the upper surface of the robot bottom plate, and a feeding pipe is fixedly installed at the end, away from the robot bottom plate, of the slurry storage barrel. A sealing plug is movably inserted into one end, far away from the slurry storage barrel, of the feeding pipe; the swing plate swings in a reciprocating mode, the swing plate drives the transmission gear to rotate in a reciprocating mode through the cambered surface gear ring, the transmission gear enables the rotating shaft to rotate in a reciprocating mode, and