动态播种试验装置液压控制系统设计研究

Design and Research of Hydraulic Control System for Dynamic Seeding Test Divice

为提高排种器播种性能测试准确性,模拟排种器真实播种作业状况,设计一种动态播种试验装置,可对不同型号排种器进行试验测试。试验装置的控制系统采用全液压系统控制,详尽设计了试验装置行驶、排种器排种、以及排种器移动安装架液压控制系统,主要利用比例方向阀和比例流量阀对行驶速度和排种器转速进行匹配调控,实现不同作业速度,调整播种粒距,以适应不同作物的排种器性能测试,并给出了所需相关液压元件选定的方法。试验装置结构简洁,操作灵便,具有广泛的应用前景,为排种器排种性能测试试验台创新设计提供了新的思路,对排种器快速发展具有重大意义。

In order to improve the accuracy of seed metering device s seeding performance,simulate the real seeding operation of seed metering device,to design dynamic seeding test device,and carry out tests on different types of seed metering device.Test device of control system adopted full hydraulic pressure control system.It is designed detailed of the driving device of hydraulic control system,metering hydraulic control system and seed metering device installed mobile hydraulic control system,mainly using the proportional direction valve and proportional flow valve for matching speed and metering device speed regulation,implement different operation speed,adjust the sowing seed spacing,the exhaust device during the test,so as to adapt to different crops and related hydraulic components needed for the selected method is presented.This test device is simple in structure,easy to operate,and has a wide application prospect.It provides a new idea for the innovative design of the test device for testing the seeding performance of the seed metering device,and has great significance for the rapid development of the seed metering device.