Suction type precision seed bunch planting device

Abstract

The invention relates to an agricultural seeding device, in particular to a suction type precision seed bunch planting device. The suction type precision seed bunch planting device mainly comprises a seed tank (26), a suction type seed sorter, a roller, a negative pressure air suction pipe (6), a speed shifting mechanism and a seed receiving and delivering device, wherein the suction type seed sorter is arranged in the roller and communicated with the negative pressure air suction pipe (6); a seed delivering box (30) is arranged between a seed outlet of the suction type seed sorter and a ducknozzle (42); a main shaft (4) of the roller is a hollow pipe; a main shaft (9) of the suction type seed sorter is arranged in the hollow pipe-shaped main shaft (4) of the roller; one end of the main shaft (9) of the suction type seed sorter is coupled to the suction type seed sorter through a bearing (8.1) and drives a seed suction disk (33), and the other end of the main shaft (9) of the suctiontype seed sorter passes through a sealing bearing (8) in the main shaft (4) of the roller; the main shaft (4) of the roller and the main shaft (9) of the suction type seed sorter are in speed-shifting connection through a gear or a chain or a notched belt. The suction type precision seed bunch planting device has the advantages of increasing the inner space of the roller as much as possible, increasing the height of the seed delivering box simultaneously, conveniently regulating the rotating speed ratio of the roller to the seed absorption box according to the agronomic requirements, and greatly improving the seeding speed while seeding accurately. Due to the unique transmission structure, the suction type precision seed bunch planting device is compact and steady, and the fault rate is reduced obviously under the environment of worse working condition.

Description

technical field [0001] The invention relates to an agricultural seeding device, in particular to an air-suction hole-sowing device for precision seeding. Background technique [0002] At present, with the continuous and in-depth development of precision agriculture, precision sowing agricultural machinery as the sowing link in precision agriculture has also accelerated the pace of modernization of agricultural machinery. Especially for a precision hole-seeding machine, due to the high cost of good seeds and the need for precision agronomy, new technologies and new products of this machine have emerged continuously in recent years. Chinese patent document discloses a kind of air-suction type sowing film spreading device on June 17, 1998, and publication number is CN2283960, and this device is made of cylinder, cylinder shaft and film-pressing wheel, and its film-pressing wheel and cylinder are connected as a whole , the drum chamber is provided with a seed chamber, a seed su...

AI Technical Summary

Problems solved by technology

The first defect of this device is that the seeds rely on gravity to fall directly into the duck's mouth from the seed tray

In this way, the following technical problems are involved: a technical solution is to adopt an air cavity or the main shaft of the air-suction suction device to be parallel to the main shaft of the drum, and to adopt gear or chain transmission to change speed between the two shafts. The defect of doing this is that the air cavity must be close to The drum will inevitably shorten the distance between the seed dropping port and the duck’s beak’s seed inlet. In this way, the free space inside the drum is large, but the height space of the seed delivery box is very small, and the design of the seed delivery box is limited. The frequency of the seeds hitting the bottom of the seed box is very high, and it is easy to hit the seeds outside. It is difficult to ensure that all the seeds accurately reach the seed box and enter the duck's mouth to achieve precise sowing.

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