Drum-type mulch puncture and under-mulch precision seeder

Abstract

A drum-type mulch puncture and precision seeder under the film, comprising: two V-shaped drums with opposite ends, gears distributed on the circumference of the drums, a pair of bevel gears at the opposite ends of the two drums, fixed on the drawbar, Connect the seed introduction tube of the seed box seed metering device, the seed injection valve arranged at the lower port of the seed introduction tube, and the seed injection valve on the circumference of the drum to open the dial. Seed valve return spring. The positive effect of the invention is that the synchronous rotation of the double rollers is used to hold the mulch film, and the mulch film is stable. The gears on the drum are relatively angled, the puncture resistance is small, and the position is accurate. The seeding port does not touch the ground, will not be blocked by soil, and will not be affected by soil dryness or wetness. The tangential speed along the circumference of the drum forms a tendency for the seeds to fly horizontally and leave the seed hole. The rate of seed entry into the hole is 100%, and the accuracy of the position of the seed is not affected by the speed of the planter. Under the condition of ensuring the seeding quality, it is better than the existing one. The seeding speed of the class seeder can be increased by 2‑4 times.

Description

technical field [0001] The invention belongs to agricultural machinery, in particular to a seeder pulled by a tractor. Background technique [0002] With the deterioration of the natural environment, the number of spring drought years in the north has increased. In order to maintain the soil moisture after spring sowing, most of the dry fields in the north are covered with plastic film and then sowed. Sowing after covering with mulch film requires simultaneous multiple sowing steps of puncturing the mulch film, squeezing out the seed hole under the film at the puncture hole, and throwing seeds in the seed hole. [0003] The existing small-sized tractor-tracted machine-drag drum-type under-film seeder includes a drum that forms mulch puncture holes and squeezes holes, a connecting frame between the drum and the traction tractor, and thorns that are distributed on the circumference of the drum, squeezes holes and releases seeds. The socket is composed of a fixed flap and a m...

AI Technical Summary

Problems solved by technology

In addition, the power of opening the nozzle to throw seeds comes from the pressure plate pushed by the ground, which is greatly affected by the softness and hardness of the ground and the height difference. The timing and size of opening the nozzle are not uniform, resulting in deviations in the seeding position, and the seeds fall outside the hole. It is not uncommon to even throw it on the film, forming seedless holes, and forming seedlings and broken strips after emergence.

Images