Design and simulation of straw-turning combined soil preparation machine's hydraulic system
Since the combined soil preparation machine is difficult to control the loosening depth and the flatness of the culti-vated ground,efforts are made to develop a dynamically-adjustable soil preparation machine and its hydraulic system.The struc-ture is analyzed and the ADAMS multi-body kinematics simulation is carried out;it is solved that the hydraulic cylinder's expan-sion-contraction amount is 0.12 m,and the adjustment range of the loosening depth is 0~0.15 m;the combined simulation of ADAMS and AMESim mechanical hydraulics is used to obtain the average rising speed of the loosening device is 0.04 m/s and the average descent speed is 0.03 m/s,which has verifies the stability of the hydraulic system and determines the working param-eters of the hydraulic components.The simulation experiments have verified the hydraulic system's ability to withstand the impact loads.These results show that the adjustment device meetssuch requirements as loosening and leveling of the combined soil prepa-ration machine,which provides strong support for prototype manufacturing.