Authors

Abstract

Aiming at the problem of high loss of oilseed rape combine harvesting cutting platform, this paper combines the biological characteristics of oilseed rape, analyses the way and reason of oilseed rape loss, selects the harvester's forward speed, transverse cutter cutting height and longitudinal cutter cutting speed three factors to influence the loss rate of the cutting platform to carry out the study on the significance of the order of significance of the following: cutting speed > forward speed > cutting height. Through the response surface analysis method, the interaction between the factors was obtained. Through the regression model of the factors affecting the loss rate, the parameter optimisation was carried out with the objective of the lowest loss rate, and the optimal parameter combinations being obtained as follows: the forward speed was 5 km/h, the cutting speed was 1.5 m/s, and the cutting height was 50 cm. Finally, the results of the model were obtained to be reliable through the experimental validation.

Abstract in Chinese

针对油菜联合收获割台损失高的问题，本文结合油菜生物特性，对油菜产生损失的方式和原因进行分析，选择收获机前进速度、横向切割器切割高度和纵向切割器切割速度三项因素对割台损失率进行影响显著性研究，其显著性顺序为：切割速度>前进速度>切割高度；通过响应面分析法得到各因素之间两两存在交互作用；通过损失率影响因素回归模型，以损失率最低为目标进行参数优化，求得最优参数组合为：前进速度为5km/h，切割速度为1.5m/s，切割高度为50cm；最后，经试验验证得到模型结果可靠。