The invention discloses an anti-falling unmanned aerial vehicle for pesticide spraying. The unmanned aerial vehicle comprises an unmanned aerial vehicle body; a rotating shaft of a propeller on the unmanned aerial vehicle body is rotationally connected with the first turntable; a plurality of limiting convex teeth are fixed on rotating shaft of the propeller; a first rotating shaft and a second rotating shaft are rotationally connected with the first turntable; a first limiting rod is fixed on the first rotating shaft; one end of the first limiting rod is in contact with the limiting convex teeth to limit rotation of the limiting convex teeth; a first hinge arm is rotationally connected to other end of the first limiting rod and is hinged to a second hinge arm; a volute spiral spring is connected with the first turntable and the second rotating shaft. When the first limiting rod makes contact with a limiting block, the included angle between the first hinge arm and the second hinge armreaches the maximum, and the maximum included angle between the first hinge arm and the second hinge arm ranges from 160 degrees to 170 degrees. After the impact force reaches a threshold value, therotating shaft and the first turntable relatively rotate, the acting force of the first limiting rod relative to the limiting convex teeth is quickly reduced, and the propeller can be separated from driving of the first turntable to be protected.
本发明公开了一种用于喷药的防坠无人机,包括无人机本体,无人机本体上螺旋桨的旋转轴与第一转盘转动连接,螺旋桨的旋转轴固定若干限位凸齿,第一转轴和第二转轴分别与第一转盘转动连接,第一转轴固定有第一限位杆,第一限位杆的一端与限位凸齿接触用于限制限位凸齿转动,另一端转动连接有第一铰接臂,第一铰接臂与第二铰接臂铰接,涡卷弹簧分别连接第一转盘和第二转轴,第一限位杆与限位块接触时第一铰接臂与第二铰接臂的夹角达到最大,第一铰接臂与第二铰接臂的最大夹角为160°~170°。在撞击力度达到阈值后旋转轴与第一转盘相对转动,第一限位杆相对限位凸齿的作用力迅速减小,螺旋桨可以脱离第一转盘的驱动,保护螺旋桨。
Anti-falling unmanned aerial vehicle for pesticide spraying
一种用于喷药的防坠无人机
2020-11-20
Patent
Electronic Resource
Chinese
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