小型甘蔗收获机切割器试验研究

小型甘蔗收割机切割器必须具有切割功耗(切割扭矩)和切割损失小的特点。通过正交试验，对影响这两个评价指标的切割参数进行单、多因素试验，得出切割参数的主次顺序，即刀盘转速、刀盘倾角、刀刃滑切角。进而采用正交多项式回归分析方法对试验数据进行处理，获得影响这两个评价指标的数学模型。利用该模型对切割参数进行优化，获得切割损失和切割功耗均较小的最佳切割参数组合：刀盘转速为685 r/min，刀盘倾角为9°，刀刃滑切角为26°，从而为小型甘蔗收割机切割器设计提供依据。

Experimental investigation of the basecutter for minitype sugarcane harvester

The basecutter of minitype sugarcane harvester must have the characteristics of lower cutting power consumption and sugarcane cutting loss. Through generally and orthogonally experimental studies, the experimental investigations of single factor and multi-factors on the sugarcane cutting parameters which influence the two evaluation indexes were carried out to meet requirements. Hence, the primary and secondary sequences of the sugarcane cutting parameters were obtained, i.e. the rotating speed of knife disc, the declining angle of knife disc and the slippage angle of blade. The mathematical models for the two evaluation indexes were constructed by using orthogonal multinomial regression analysis method to deal with the experimental data. The mathematical models were employed to optimize the sugarcane cutting parameters. The optimal sugarcane cutting parameters with minimum cutting power consumption and sugarcane cutting loss were worked out, namely, the rotating speed of knife disc equals to 685 r/min, the declining angle of knife disc equals to 9° and the slippage angle of blade equals to 26°. The results provide some foundations for design of basecutter for minitype sugarcane harvester.