红花丝采收机扶禾器升降装置设计及仿真分析

Motion Simulation and Design of Safflower Harvester Crop Lifter Adjustment Mechanism

新型自走式红花丝采收机工作效率受到扶禾器与红花植株的相对位置影响。为此,针对红花丝采收机在采收时保持扶禾器与红花花丝相对位置,设计了一种仿形升降装置,使扶禾器工作达到效率最大化。对仿形装置进行受力及伸长量变化率分析,确定机构尺寸及伸长量变化率与位移的关系。综合考虑力学与位移,确定各液压杆的长度变化范围为600~1 050mm,辅助液压缸的长度变化范围400~500mm,纵向仿形量可达到5 0 0 mm,横向仿形量可达到4 0 0 mm。通过ADMAS仿真进行纵向仿形和横向仿形,纵向仿形量可达到5 8 0 mm,横向仿形量可达到410mm,满足机械式红花丝采收机的运动仿形。该机构为研制机械式红花丝采收机提供了依据。

New self-propelled safflower recovery efficiency crop lifter and the relative position of the safflower plant influences. Address safflower harvest harvesting machine to keep grain lifter and relative location of Saffron filaments,a lifting device is designed to make grain lifter work to achieve maximum efficiency. The copying device for analysis of the rate of change of force and elongation of mechanism determined the relationship between size and elongation rate and displacement. Considering the mechanics and displacement to determine the length change of hydraulic lever in the range of600-1050 mm,auxiliary hydraulic cylinder length range of 400-500 mm. Longitudinal profiling at levels up to 500 mm,transverse profile at levels up to 400 mm. By ADMAS simulation for vertical profiling and horizontal profile,vertical profile at levels up to 580 mm,transverse profiling can reach 410 mm meet mechanical saffron harvesting machine motion profile. The Agency provided a basis for developing mechanical saffron harvesting machine.