Design of Metering Device Key Parts of Pneumatic Grass Seeder

Abstract

Based on the mechanical and physical properties study of forage grass seeds, multi-line with one-device type metering device was designed. It was composed of adjustable screw, stirrer, metering device housing and central metering sheave and so on. The sowing rate can be set by turning the screw to change the working length of the central metering sheave relative to the metering device housing. The stirrer inside of the sheave housing is used to prevent seeds overhead. And metering of different sizes of seed is adjusted by changing the position of internal components of the slot wheel mechanism. Innovative design on the structure of the central metering sheave was finished. According to the structure parameters and physical characteristic parameters, different seed sowing rate of per hectares was calculated. And then the working length scale of the central metering groove wheel was made. And there is a one-to-one correspondence between scale values and sowing quantity per hectare of different kinds of seed.

Design of 'Anjul' Seed Metering Mechanism for Round Seeds and its Seed Pattern Characteristics

“…Mishra et al, (2015) modified these cups to a shape which was cylindrical at top and conical at the bottom for better retention of seeds of crops like groundnut, paddy and green gram. The arc-shaped grooves over the periphery of cylinder were developed for metering of bothsmall and large seeds (Gaixia et al, 2015). For small seeds, the groove was shallow and the number of grooves was more, while metering big seeds, the depth of the groove was decreased up to not less than half the thickness of the seed in order to reduce the damage to seed.…”

A Smart Feeding System for Planting Machine

“…It receives and fabricates the obtained data through the control system to send a voltage to a mounted DC motor with the rotating shaft to drop seeds through the tube seed. Gaixia et al (2015) designed a metering device of a pneumatic seeder, they reported that the metering device is mainly composed of an adjustable screw rod, sprocket wheel, Stirring teeth, regulating mechanism and casing body. It takes its motion from the machine land wheel.…”