提高整秆式甘蔗收割机喂入速度的仿真试验及改进效果

为改善与企业合作开发的整秆式甘蔗收割机样机的作业效果,在三维设计软件UG中建立了甘蔗收割机切割及输送系统的虚拟样机模型,并导入多体动力学仿真软件ADAMS中,分别在切割系统前方增加一级主动喂入辊,在螺旋提升机构外表面上包裹表面粗糙的橡胶,以及在随刀轴旋转的套筒上安装橡胶拨块等状态下,对甘蔗通过切割系统的速度进行了虚拟仿真试验。结果表明,改进后,可提高切断后甘蔗向后的输送速度,降低甘蔗在输送过程中出现堵塞的概率。田间试验表明,改进后样机收获的甘蔗头部完好率由28.76%提高到54.51%,含杂率由4.20%降低至2.67%,生产效率由5.66 t/h提高至7.61 t/h。

Experiment and simulation in improvement of the feeding velocity for the whole stalk sugarcane harvester

In order to improve the performance of the whole stalk sugarcane harvester, a 3D model of cutting and feeding system was built to simulate the working process by ADAMS software.In the front ofthe cutting system, an active feeding roller was added and a rubber with rough surface was used in the screw elevator, to improve the feeding efficiency. The virtual test results showed that the transporting speed of the sugarcane after cutting was improved and the blocking rate was decreased for the optimized structure. Field test resulted indicated that the rate of no damage of the base of sugar cane stalks enhanced from 28.76% to 54.51%, trash content decreased from 4.20% to 2.67%, production efficiency raised from 5.66 t/h to 7.61 t/h.