Authors

Abstract

Aiming at the problem of high cob loss in non-opposed row harvesting of 4YZ-6 fresh corn harvester, a front-end part adapted to the grain splitter of this model was designed. The structure of the front-end part was elaborated, the sliding conditions of the stalks under the action of the grain splitter were studied, the forces between the stalks and the front-end part were theoretically analyzed, and the operating effect of the front-end part was verified through field tests. The tests show that the expected operating effect is optimal when the inclination of the grain separator is 27.7°, the clamping angle of the grain splitter is 31°, the stubble height is 270 mm, and the front-end guards half width is 3.8 mm. The verification test for this parameter combination yielded a breakage rate of 8.71% and a loss rate of 9.47%, which were basically consistent with the expected values. The design of this front-end component of the grain splitter provides an effective means to reduce the loss of ears in the harvesting process of fresh corn.

Abstract in Chinese

针对 4YZ-6 型鲜食玉米收获机在非对行收获时果穗损失大的问题，设计了与该机型分禾器相适应的前端部件。详细阐述了前端部件的结构，研究了茎秆在分禾器作用下的滑动情况，对茎秆与前端部件之间的作用力进行了理论分析，并通过现场试验验证了前端部件的工作效果。试验表明，当谷物分离器倾角为 27.7°、谷物分割器夹角为 31°、留茬高度为 270 mm、前端护板半宽为 3.8 mm时，预期运行效果最佳。对这一参数组合进行验证测试的结果是，破损率为 8.71%，损失率为 9.47%，与预期值基本一致。该分禾器前端部件的设计为减少鲜食玉米收获过程中的果穗损失提供了有效手段。