拨禾星轮式玉米收获台设计与试验

Design and Experiment of Corn Harvester Head with Reel Star Wheel

为了提高玉米收获机的行距适应性，研发了拨禾星轮式玉米收获台，设计了均布有6个拨禾指的拨禾星轮、螺旋扶禾导人辊、拉茎辊等部件，对玉米不被推倒折断、单株连续有序喂人的条件作了理论分析，进行了田间试验与性能测试。结果表明，作业速度为1．1～1．5m／s时，拨禾星轮转速为50r／min、扶禾导人辊转速为1300r／min、拉茎辊转速为1050r／min，行距适应性显著提高。

In order to improve the adaptability of row spacing, a new type of corn harvester with reel star wheel harvester head was developed. The corn harvester head was composed of the star wheel, the screw roller and stalk pulling roller. The star wheel had six fingers, and the screw roller could lift tilting corn and feed the corn in the picking device. And the stalk pulling roller were designed by analyzing the conditions of maize not pushing to break and single continuous feeding. Finally the performance of the corn harvester head was tested when working along row or inclined row or vertical row in field. The results showed that the corn harvester head could work along row or inclined row or vertical row, and the adaptability of row spacing was improved largely, when the operation speed was 1.1 - 1.5 m/s, star wheel speed was 50 r/min, lifting import roller speed was 1 300 r/min, and stalk pulling roller rotate speed was 1 050 r/min.