CN108243680B

CN108243680B - Air suction seed suction and mechanical scooping combined type precision seed sowing device

Info

Publication number: CN108243680B
Application number: CN201810109987.9A
Authority: CN
Inventors: 王金武; 唐汉; 关睿; 王金峰; 李杞超; 张曌
Original assignee: Northeast Agricultural University
Current assignee: Northeast Agricultural University
Priority date: 2018-01-24
Filing date: 2018-01-24
Publication date: 2021-03-12
Anticipated expiration: 2038-01-24
Also published as: CN108243680A

Abstract

A combined precision seed-metering device of air suction seed and mechanical scoop belongs to agricultural machinery; a circular groove type negative pressure air chamber shell, a cylindrical inner gear ring and a seed conveying groove are fixedly arranged in the seed sowing device shell, an air-break boss and an air suction through hole are arranged on the inner wall surface of the bottom of the circular groove type negative pressure air chamber shell, a rotary driving shaft fixedly provided with a disc type planet wheel carrier and a cylindrical sun gear is inserted in the central part of the circular groove type negative pressure air chamber shell, a plurality of air suction pipe shafts are rotatably and uniformly distributed and arranged on the disc type planet wheel carrier, the cylindrical planet gear and a barrel type scoop are fixedly arranged on the air suction pipe shafts, and the bottom of the seed conveying groove is communicated and provided with a seed; the device combines two different technical schemes of negative pressure air suction seed suction and mechanical scooping type seed filling on the same seed sowing device to play a role of mutual matching and support, and has the characteristics of novel, unique, simple and reasonable structure, good seed suction and filling operation effect, high precision, low hole rate of missed seeding and reliable use.

Description

Air suction seed suction and mechanical scooping combined type precision seed sowing device

Technical Field

The invention belongs to agricultural machinery, and mainly relates to a seed sowing device.

Background

The mechanical seed charging and discharging device and the air suction seed discharging device are both crop seed discharging assemblies used in agricultural mechanized operation at present. The mechanical seed filling and seeding device adopts a single cellular wheel type seed filling and seeding roller or a scoop type seed filling and seeding wheel to complete the seed filling and seeding operation, and the air suction seed suction seeding device adopts a single negative pressure suction force to adsorb the seeds on the seed scoop to complete the seed filling and seeding operation. The seed sowing device with the structure adopts the single mechanical seed filling or single air suction negative pressure seed suction principle and the technical scheme respectively, in the production operation and use practice, the missed seeding and the cavity caused by the fact that the seeds are easy to fill and cannot be sucked are generated, the seeding operation quality is reduced, the seedling protection number on the unit area does not meet the specified requirement, and the crop yield on the unit area is reduced. In order to solve the problems, the technical scheme of adding the air suction structure on the original traditional mechanical seed sowing device is disclosed, and due to the limitation of the traditional mechanical seed sowing device, the successful report and use of the research are not found.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and researches and designs a combined type precise seed sowing device with air suction and seed suction and mechanical scooping, so that the purposes of ensuring the seed filling and seed suction reliability and precision of the seed sowing device, avoiding and eliminating the phenomenon of missed seeding holes and improving the sowing operation quality are achieved.

The purpose of the invention is realized as follows: a circular groove type negative pressure air chamber shell, a cylindrical inner gear ring and a seed conveying groove are fixedly arranged in the seed sowing device shell in sequence, an air-break boss and an air suction through hole are respectively arranged at the upper part and the lower part of the inner wall surface of the bottom of the circular groove type negative pressure air chamber shell, a rotary driving shaft is rotatably inserted in the central part of the circular groove type negative pressure air chamber shell, a disc type planet wheel carrier and a cylindrical sun gear are fixedly arranged on the rotary driving shaft, the disc type planet wheel carrier is positioned at the position between the circular groove type negative pressure air chamber shell and the cylindrical inner gear ring to seal the circular groove type negative pressure air chamber shell to form a negative pressure cavity, a plurality of air suction pipe shafts are rotatably and uniformly arranged on the disc type planet wheel carrier along the circumferential direction, the cylindrical planet gear is fixedly arranged on the outer side part of the air suction pipe shafts, the cylindrical planet gear is respectively engaged with the cylindrical sun gear and, the seed metering device is characterized in that a barrel cavity of the barrel type scoop is communicated with a suction pipe shaft cavity, the suction pipe shaft cavity is communicated with a negative pressure cavity of a circular groove type negative pressure air chamber shell, the end part of the other side of the suction pipe shaft is in contact or out of contact fit with a gas-cut boss, and a seed metering pipe is communicated and installed on the bottom of a seed conveying groove, so that the gas suction seed-suction and mechanical scoop combined type precise seed metering device is formed.

The invention combines two different technical schemes of air suction negative pressure seed suction and mechanical seed scooping on the same seed sowing device, supports accurate and reliable seed suction and filling on the seed scooping through the matching of the two modes of air suction seed suction and mechanical seed scooping, and has the characteristics of novel, unique, simple and reasonable structure, good seed suction and filling operation effect, high accuracy, low miss-seeding void ratio and reliable use.

Drawings

FIG. 1 is a schematic view of the general structure of a combined air-suction seed and mechanical scoop type precision seed metering device;

FIG. 2 is a schematic view of the assembly structure of the rotary driving shaft, the disc type planetary gear carrier, the suction pipe shaft, the cylindrical sun gear, the cylindrical planetary gear and the bucket scoop in FIG. 1;

FIG. 3 is a schematic view of the suction tube shaft and bucket scoop assembly;

FIG. 4 is a schematic view of the structure of the circular groove type negative pressure air chamber shell.

Description of part numbers in the figures:

1. seed metering ware casing, 2, cylindrical sun gear, 3, rotation drive shaft, 4, circular slot type negative pressure air chamber casing, 5, cylindrical ring gear, 6, cylindrical planetary gear, 7, suction tube axle, 8, bucket formula scoop up, 9, seed conveying groove, 10, seed metering pipe, 11, disc type planet wheel carrier, 12, gas-break boss, 13, the through-hole of breathing in.

Detailed Description

The following detailed description of the inventive embodiments is provided in connection with the accompanying drawings. A combined type precision seed sowing device with air suction and seed suction and mechanical scooping is characterized in that a circular groove type negative pressure air chamber shell 4, a cylindrical inner gear ring 5 and a seed conveying groove 9 are sequentially and fixedly arranged in a seed sowing device shell 1, an air breaking boss 12 and an air suction through hole 13 are respectively arranged on the upper part and the lower part of the inner wall surface of the bottom of the circular groove type negative pressure air chamber shell 4, a rotary driving shaft 3 is rotatably inserted in the central part of the circular groove type negative pressure air chamber shell 4, a disc type planet wheel carrier 11 and a cylindrical sun gear 2 are fixedly arranged on the rotary driving shaft 3, the disc type planet wheel carrier 11 is positioned between the circular groove type negative pressure air chamber shell 4 and the cylindrical inner gear ring 5, the circular groove type negative pressure air chamber shell 4 is sealed to form a negative pressure chamber, a plurality of air suction pipe shafts 7 are uniformly and rotatably arranged on the planet wheel carrier 11 along the circumferential direction, the cylindrical planet gear 6, the cylindrical planetary gear 6 is respectively engaged with the cylindrical sun gear 2 and the cylindrical inner gear ring 5, a barrel type scoop 8 is fixedly arranged at one side end of the air suction pipe shaft 7, a barrel cavity of the barrel type scoop 8 is communicated with a pipe cavity of the air suction pipe shaft 7, the pipe cavity of the air suction pipe shaft 7 is communicated with a negative pressure cavity of the circular groove type negative pressure air chamber shell 4, the other side end of the air suction pipe shaft 7 is in contact or out of contact with the air cut-off boss 12, and the bottom of the seed conveying groove 9 is communicated with and provided with a seed discharging pipe 10.

During operation, the rotary driving shaft 3 drives the cylindrical planetary gear 6 to do rotary motion through the cylindrical sun gear 2 which synchronously rotates, under the matching control of the cylindrical inner gear ring 5, the cylindrical planetary gear 6 drives the air suction pipe shaft 7 and the bucket scooping spoon 8 to do revolution around the cylindrical sun gear 2 and self-rotation motion, when one bucket scooping spoon 8 is positioned in a seed stack at the bottom of the seed metering device shell 1, the bucket scooping spoon 8 scoops seeds and charges seeds, negative pressure in the circular groove type negative pressure air chamber shell 4 generates negative pressure suction to the bucket scooping spoon 8 through the air suction pipe shaft 7, the seeds are more reliably adsorbed and filled on the port of the bucket scooping spoon 8, when the bucket scooping spoon 8 which sucks seeds rotates to the upper side part of the seed metering device shell 1 along with the air suction pipe shaft 7, the end part of the air suction pipe shaft 7 is in contact with the air-breaking boss 12 to cut off the negative pressure and match, at the moment, the self-rotating bucket scooping spoon 8 is in an inclined, the seeds fall into the seed conveying groove 9 under the action of no negative pressure suction force by means of self weight and are discharged through the seed discharging pipe 10, and the operation process from seed suction and filling to seed discharging is completed. And circulating in sequence.

Claims

1. The utility model provides a kind of a kind is inhaled with mechanical combined type smart volume seed metering ware that ladles out which characterized in that: a circular groove type negative pressure air chamber shell (4), a cylindrical inner gear ring (5) and a seed conveying groove (9) are fixedly arranged in a seed sowing device shell (1) in sequence, an air-break boss (12) and an air suction through hole (13) are respectively arranged at the upper part and the lower part of the inner wall surface of the groove bottom of the circular groove type negative pressure air chamber shell (4), a rotary driving shaft (3) is rotatably inserted in the central part of the circular groove type negative pressure air chamber shell (4), a disc type planet wheel carrier (11) and a cylindrical sun gear (2) are fixedly arranged on the rotary driving shaft (3), the disc type planet wheel carrier (11) is positioned at the position between the circular groove type negative pressure air chamber shell (4) and the cylindrical inner gear ring (5) to seal the circular groove type negative pressure air chamber shell (4) to form a negative pressure chamber, a plurality of air suction pipe shafts (7) are rotatably and uniformly arranged on the disc type planet wheel carrier, cylindrical planetary gear (6) are fixedly installed on the outer side portion of an air suction pipe shaft (7), cylindrical planetary gear (6) is respectively meshed with cylindrical sun gear (2) and cylindrical inner gear ring (5), a barrel type scoop (8) is fixedly installed on one side end portion of the air suction pipe shaft (7), a barrel cavity of the barrel type scoop (8) is communicated with a pipe cavity of the air suction pipe shaft (7), the pipe cavity of the air suction pipe shaft (7) is communicated with a negative pressure cavity of a circular groove type negative pressure air chamber shell (4), the other side end portion of the air suction pipe shaft (7) is in contact with or is out of contact with a gas cut-off boss (12) to be matched, and a seed conveying groove (9) is communicated with and provided with a seed metering pipe (10).