1results about How to "Increase flight altitude" patented technology

The present application relates to a kind of one-way swingable unmanned aerial vehicle strip sowing seed tube device of non-driven folding type, including strip sowing seed metering device connection device, normally closed electromagnet driven limiting device, rigid carbon fiber seed tube, flexible bellows, one-way swing assembly of fixed bellows and the roller of each joint connection place thereon.When unmanned aerial vehicle takes off, the gravity of seed tube itself is used to unfold without driving, and when unmanned aerial vehicle lands, the weight of fuselage is used to fold without driving.When operating, the upper end position of seed tube is fixed, the end can swing freely in one direction, and the length of seed tube can be set according to the size of rotor airflow.The present application has compact and ingenious structure, ensures the safety of unmanned aerial vehicle blind take-off and blind landing operation, realizes strip sowing operation in two seed dropping postures of seed tube end close to ground or trailing, and achieves the purpose of effectively inhibiting the interference of rotor airflow on falling seeds and the effect of seed large speed touch ground rebounding.