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针对现有带式排种器试验台对不同类型排种器适应性差,播种类型受限制、不能模拟播种机田间作业的实际工况等问题,采用理论研究与实验室试验相结合的方法,设计一种新型的排种器试验台,着重对排种器安装架和传送带清油装置进行研究,并对样机进行试验。结果表明:自行设计的排种器安装架具有较强的通用性和适应性,更换排种器操作快捷;传送带清油装置工作可靠,清洁效果良好;试验台可使用常见的机械式和气力式排种器,实现条播、穴播、精播等播种方式的检测;借助排种器安装架调整装置,实现了在试验台上对播种机田间实际工作状态的模拟,排种高度0～400 mm可调,排种器各方向倾斜角度0°～15°可调,能够完成GB/T 6973-2005《单粒(精密)播种机试验方法》、GB/T9478-2005《谷物条播机试验方法》中排种性能指标的检测。
In view of the problems that the existing test bed of the seed metering device has poor adaptability to different types of seed metering devices, the types of sowing are limited, and the actual working conditions of the sowing machine can not be simulated, the method combining the theoretical research and the laboratory test is adopted, and the design A new type of seed metering test bench, focusing on the raiser mounting rack and conveyor oil cleaning device research, and the prototype test. The results show that the self-designed seed metering device mounting rack has strong versatility and adaptability, the operation of replacing the seed metering device is quick, the oil cleaning device of the conveyor belt works reliably and the cleaning effect is good, and the test bench can use common mechanical and pneumatic rows The planting device can realize the sowing method such as cutting, hole-sowing and precision sowing. With the adjusting device of the seed metering device mounting bracket, the simulation of the actual working state of the sowing machine field on the test bench can be realized. The height of the sowing seed is adjustable from 0 to 400 mm , The seed metering device can be adjusted from 0 ° ~ 15 ° in all directions to complete the test method of single grain (precision) planter of GB / T 6973-2005, middle row of GB / T9478-2005 “Test method of grain seed drill” Detection of performance indicators.