Unmanned aerial vehicle anti-collision device

The utility model provides an unmanned aerial vehicle anti-collision device which comprises a plurality of vehicle arms evenly distributed on the periphery of an unmanned aerial vehicle body, a notch is formed in each vehicle arm, a guide rod is arranged in each notch, a sliding block arranged on each guide rod in a sleeved mode is arranged in each notch, each vehicle arm is hinged to an anti-collision arm, one end of a pull rod is hinged to the anti-collision arm, and the other end of the pull rod is hinged to the anti-collision arm. One end of the anti-collision arm is hinged to the sliding block, the other end of the anti-collision arm is hinged to the sliding block, the upper end of the guide rod is sleeved with an upper spring and a lower spring, the upper side of the tail end of the anti-collision arm is fixedly connected with an upper anti-collision ball, and the lower end of the tail end of the anti-collision arm is fixedly connected with a lower anti-collision ball. And the pull rod pulls the sliding