| 摘要 |
FIELD: agriculture.SUBSTANCE: planting unit comprises a housing and a hopper for seeds. In the housing on the horizontal axis a metering vertical straight line cellular wheel is mounted. The latter is secured by bolts on the plastic gear. The device also has a roller-reflector, a seed ejector blade, a pulsator and a bypass air-duct. The latter is mounted on the elongated head of the horizontal axis by means of the holder. The pulsator has a plug with supporting rollers and a round turnbuckle. The cellular wheel is made corrugated with waves of the same length and height, arranged circumferentially in the inner cavity. The number of the waves is equal to the number of seed cells. The tops of the waves are connected to the centres of the bottoms of the cells with the nozzle openings. Ejection of seeds is carried out by compressed air flowing periodically through these openings through the bypass air-duct and the pulsator from the pneumatic system of the tractor or the seeding machine in the moment of seed approach to their ejection into the furrow. The seed ejector blade is shifted by the cell diameter from the ejection window and pushes the seeds stuck, restoring the functional capacity of cells. Due to the high speed of flight the seeds are introduced into the soil at the point of their first contact into the narrow groove with compacted bed without rolling on it.EFFECT: invention provides sowing seeds with the seeding machines of type SST-12V, uniform location of seeds in the furrow, increases labour productivity.6 cl, 5 dwg |
