田间运输是甘蔗机械收获过程中必不可少的环节。根据甘蔗收获后的田间运输要求，采用分级和同步举升的结构设计方案设计出了田间高位举升运输车的举升与自卸机构，可以满足田间货物转运的要求。机构的受力分析与仿真试验结果表明：各机构的拉杆及油缸在举升的起始位置受力最大，自卸机构的油缸最大推力约为80 kN，拉杆最大拉力约为50 kN；T式同步举升机构的油缸最大推力约为73 kN，拉杆最大拉力约为52 kN；举升臂在运动的5 s过程中，在0.47397 s时刻举升臂受到的最大应力值为200.15 MPa，最大应力位置在举升臂与机架的相连处。文中的研究为进一步设计制造田间高位举升运输车提供了技术基础和理论依据。%Field transportation is an indispensable part in the course of mechanical harvesting of sugarcane. According to the transportation requirements in sugarcane field after harvesting,the design plan of mechanism based on multi-stage lifting and sync-lift-ing was proposed to finish the design of height-lifting mechanism and dump-bodies of transportation vehicle which met requirements of transporting crops in the field. The results of stress analysis and simulation show that:the levers and cylinders are subjected to the maximum load at starting positions of lifting process,the maximum push of dump-body’s cylinder is about 80 kN,the maximum pull of dump-body’s lever is about 50 kN,the maximum push of T-sync-lifting’s cylinder is about 73 kN,the maximum pull of T-sync-lift-ing’s lever is about 52 kN,the maximum stress of lifting-arm is 200.15 MPa which is at the joint of the arm with the lifting-frame. The research offers technical and theoretical basis for further designing and manufacturing height-lifting transportation vehicle for sugarcane field.
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