旱地全膜双垄沟播直插机构的仿真

Simulating Optimization of Direct Insert Corn Painting Furrow Seeder for Whole Plastic-Film Mulching on Double Ridges in Dry Land

针对膜上播种需求,设计了一种新型曲柄滑块机构驱动平行四杆机构直插式播种装置,能实现播种时成穴器"零速"播种。以成穴器相对于机架水平位移差和播深为考虑目标,在Solid Works Motion中进行了该直插式播种装置的结构优化仿真。得到最佳工作组合参数为:当整机前进速度0.20 m/s、主动齿轮转速为192°/s时的播种装置能基本实现"零速"播种,满足直插播种性能要求,能有效减少播种作业时成穴器挑膜、撕膜等现象,能使膜的保温性和抗风性提高,为作物增产提供有力保障。

In order to meet the requirements of sowing on the film, a new type of crank slider mechanism is designed, which is driven by parallel four bar mechanism. Taking the horizontal displacement difference and the sowing depth of the hole form- ing device relative to the frame as the target, the structure optimization of the direct seeding device is carried out in Solidworks Motion. Get the best working parameters： when the speed of 0.20m/s, the driving gear speed of seeding device at 192°/s, the zero speed seeding can be basically achieved, thus it can meet the performance requirements, effectively reduce the sowing hole for pick film, tear film and other phenomena, and can improve the heat preservation property and wind resistance of mem- brane so as to provide powerful guarantee for the crop production.