内置式双位投种穴播器

Embedded Double-position Throwing Seeds Dibbler

设计了一种内置式双位投种穴播器,在牵引工作状态下自动滚动、实现入土成穴器入土。采用内置式双位投种方式,且上位一次变量排种器布置在轮盘的定盘中心,以减小向入土成穴器的输种距离和省略传动装置。入土成穴器采用定、动两瓣结构,非开启状态为常闭,动瓣在达到最大入土深度后按杠杆原理打开,完成下位二次投种、出土后关闭。样机试验证明,穴播器各项性能符合设计和农艺要求。

A dibbler with embedded double-position throwing seeds was presented.Variable seed-metering device on the position was layout in the center of helm-shaped wheel for shortening the distance of dropping seeds and omitting gearing device.Boring and caving device was composed with fixed part and rotatable part,always closed in the state of non-opening.Based on the lever principle,rotatable part was opened when the most depth in the soil was reached.The second lower position throwing seeds was completed,and then rotatable part was came up out of soil and closed.The experiment results showed that the proposed dibbler could meet the design and agriculture requirements.