油菜联合收割机脱粒分离装置的试验

为了获得一种适合油菜的脱粒分离装置及其工作参数，首先对油菜部分特性参数进行了测定，然后对纹杆、锯齿型滚筒和栅格、冲孔式组合凹板的脱粒分离装置，在不同喂入量和滚筒转速下进行了油菜脱粒试验．试验结果表明，该装置脱分损失不超过0．5％．运用DPs数据处理系统对试验结果进行处理，建立了油菜喂入量、脱粒滚筒线速度、脱粒滚筒长度与脱粒分离率的回归方程，并进行了计算机仿真．分析表明，脱分率主要与油菜的喂入量、滚筒结构、滚筒线速度和滚筒长度有关，其中滚筒线速度和喂入量对脱分率影响最大．通过试验找到了脱粒分离装置的最佳工作参数．

Experimental study on threshing and separating unit of rape combine

In order to get good working parameters of threshing and separating unit for rape, some performance parameters of rape are measured. Experimental studies with different feed and threshing rotating speed are made on threshing and separating unit of rape combine by best regressive design. The rasp bar and the saw tooth are used as threshing elements; the separating element is grid concave and hole concave. The regressive equation between rape feed, cylinder line speed, cylinder length, and threshing and separating rate is established based on the test results using DPS and is simulated. The results of the study are important to the design and manufacture of the rape combine.