Authors

Abstract

In view of the complex agronomic technology of highland barley production and the lack of special machinery for harvesting and bundling highland barley, the harvesting of highland barley is basically done manually. There is a seriously reduced degree of mechanization of highland barley harvesting. Therefore, this paper designs a self-propelled highland barley harvesting and bundling machine, which realizes a single operation process to complete mechanized complex operations such as harvesting, bundling and laying highland barley. By designing the highland barley harvesting method and cutting platform, the height of the cutting platform can be adjusted stepless, and the highland barley bundle knotter is designed to realize the regulation and control of the baling diameter of the highland barley. According to the design of the rope feeding mechanism, the gathering mechanism and the baling mechanism, the main parameters of the baling device are determined. The stubble cutting height of the machine is 325 mm, the average diameter of the highland barley bundles is 195 mm, the average weight per bundle is 5.08 kg, bale formation rate is 97.8%, the qualification rate of the straw bundle reaches 95.6%, drop resistance rate is 92.6%, operating efficiency is 0.82 ha/h. The harvest baler runs in low speed 1 gear, the machine has high operation efficiency, high bundling rate of highland barley, good paving effect, reduced labor intensity, provides the mechanized efficiency of highland barley harvesting. Fuel consumption per hectare is 8.05 kg.hm-2, and the three shifts are without fault, to sum up, it can meet the requirements of highland barley harvesting and baling. The above research can provide a reference basis for the design of the highland barley harvesting baler.

Abstract in Chinese

针对青稞生产农艺技术复杂且青稞收割打捆无专用机械，目前青稞收获基本靠人工被辐射收割机割倒青稞后，人工打捆后用拖拉机拉到场地上晾晒，劳动强度非常大，且效率低下，严重降低了青稞收获的机械化作业程度。因此本文设计了自走式青稞收割打捆一体机，该机具实现了一个作业流程即可完成青稞收割、打捆、铺放等机械化复式作业。该机具通过设计青稞收割方式和割台，可无级调整割台高度，设计了青稞成捆打结器，实现了对青稞打捆捆径的调节控制，通过对送绳机构、集禾机构、放捆机构进行设计，确定了打捆装置的主要参数。该机作业后的割茬高度325mm，青稞捆平均直径为195mm，每捆平均重量为5.08 kg，成捆率97.8%，草捆合格率达到95.6%，草捆抗摔率92.6%，作业效率0.82公顷/小时，收割打捆机行驶速度挂在低速1挡，该机具作业效率高，青稞成捆率高，铺放效果好，降低了劳动强度，提供了青稞收获的机械化效率，每公顷燃油消耗量8.05kg·hm-2，并且三班次作业无故障，综上，可满足青稞收割打捆一体化机械作业需求，以上研究可为青稞收割打捆机的设计提供参考依据。