一器多行环槽推送式排种器的优化设计及研究

设计了一种适用于水稻穴直播的一器多行环槽推送式排种器,分析了排种器的工作原理和种子在出种口的受力及运动情况,对排种器的清种和护种结构进行了合理的设计,并对精播条件进行了理论计算,推算出排种盘的理论最大转速。在结合农艺对播种穴距要求的基础上,设计了穴距可调机构,改变不同齿轮啮合得到不同传动比,进而实现播种的穴距可在一定范围内可调节,并通过pro/E对穴距可调结构进行了运动学仿真分析。结果表明:穴距可调机构传动比符合理论传动比要求,穴距可调范围合理,排种器工作可靠。

Design and Research of Multi-line Metering Device with Ring Groove Push Movement

A multi-line metering device was designed for hill-drop of rice with ring groove push movement .Working principle of the multi-line metering device and force on dropping seed were analyzed , improvement design of structure for cleaning and protecting seeds were made , and the theoretical maximum speed of the metering plate was investigated by theoretical calculation of precision sowing condition .On the base of agronomic requirement for hole distance , a hole space adjustable mechanism was designed.It' s change gears engagement to obtain different transmission ratio and rea lized the sowing distance adjustable under the certain range .Kinematics simulation analysis for the hole space adjusta-ble mechanism was made on the base of Pro/E, the results showed that the transmission ratio can meet the theoretical re-quest , the adjustable range of hole distance is rational and device working stable and performance well .