CN1217133A

CN1217133A - Precision seeder for maize

Info

Publication number: CN1217133A
Application number: CN 97122327
Authority: CN
Inventors: 马成林; 于建群; 杨海宽; 马旭; 左春柽; 张守勤
Original assignee: Jilin University of Technology
Current assignee: Jilin University of Technology
Priority date: 1997-11-17
Filing date: 1997-11-17
Publication date: 1999-05-26
Anticipated expiration: 2017-11-17
Also published as: CN1070687C

Abstract

The mechanical precision seeding apparatus for maize and other comprises shell body, seeding wheel, feeding shaft, seed baffle and nuts. On the outer edge of the seeding wheel the cylindrical filling holes and the stepped cell seed quantitative holes connected with said filling holes are equidistantly distributed, and the lateral and radial seed-discharging channels are respectively cut on the inside surface and inner cylindrical surface at the seed-feeding hole of the shell body. Under the condition of that the seeding wheel is not changed, said invented seeding apparatus can implement precision quantitative seed-sowing for different varieties of maize seeds with different forms and sizes.

Description

Precision seeder for maize

The invention belongs to the mechanical precise seeding unit that in the agricultural machinery corn seed is carried out precise sowing, also be applicable to other crops precise sowings.

At present, along with promoting the use of of the improved seeds seed of costliness, agricultural presses for a kind of simple in structure, and is easy to use, reliable operation and can carry out the sower of precise sowing to seeding corn and other crops.Precise sowing not only can be saved breeding, and can reduce field thinning, final singling recruitment, can improve crop yield again, and therefore, precise sowing is in all extensive uses of many countries.

One of key problem in technology of carrying out precise sowing is that seeding unit can satisfy the Precision Seeding requirement.China just began one's study and promotes the precise sowing technology from the beginning of the seventies, but was not widely used so far, and its reason is a lot, but mainly was not have the seeding unit that is suitable for.External Precision Seeding seeding unit adopts pneumatic type, this seeding unit complex structure, price height, working service inconvenience more.And that hole roller formula seeding unit has is simple in structure, price is low, advantage such as easy to use.Chinese scholars generally believes: it is fit to broadcast large seed, as comparatively ideal seeding units such as corns.But it exists seed damage ratio height, and is strict to seed sizes, is not suitable for shortcomings such as high speed.For this reason, many scholars have carried out extensive studies and exploration, as add the filling wheel, and strength is filled kind of clear a kind, uses rubber brush kind wheel, compound type hole filling seed inside, adjustable filling seed inside etc.But all be difficult to guarantee type hole, the corn seed of difformity and size is carried out Precision Seeding under stepless situation with a kind of dimensional parameters.

The object of the present invention is to provide under a kind of condition of not changing seed wheel seed to difformity and size is the precision seeder for maize that the corn seed of different cultivars carries out precise sowing.

The object of the present invention is achieved like this: it is by housing, seed wheel, seed retaining plate, feed shaft is formed, seed wheel is sleeved in the housing, and be assembled together by the axis hole on its axostylus axostyle and the housing, use the nut axial location, seed wheel and housing formation are filled kind of a district, feed shaft is contained in the axis hole of axostylus axostyle, seed retaining plate is contained on the madial wall of housing, have on the sidewall of housing and plant the seed inlet that case communicates, have the mouth of charging seed on the face of cylinder of housing, on the face of cylinder of seed wheel, equidistantly be distributed with the cylindricality pack hole with link to each other with the cylindricality pack hole step-like in the nest dosing hole, on the medial surface at the place of charging seed mouthful on the housing and inner cylinder face, have side direction and radially put kind of a groove.

The present invention because on the outer rim of seed wheel, equidistantly be distributed with the cylindricality pack hole and coupled step-like in the nest dosing hole, can guarantee that the corn seed of difformity and size quantitatively deposits in this hole accurately, need not carry out sizing screening to seed.For seed is successfully discharged by charging seed mouthful, on charge seed mouthful medial surface at place and the face of cylinder on the housing, have side direction and radially put kind of a groove, can prevent card type effectively, make the damage ratio of seed extremely low, it is even to charge seed.Therefore, do not change seed wheel, must can not realize the corn seed of difformity and size is carried out precise sowing, and that seeding unit is simple in structure, volume is little, reliable operation, use are promoted be convenient seed grading.

Concrete structure of the present invention is provided by following examples and accompanying drawing thereof.

Fig. 1 is the profile of the precision seeder for maize of proposition according to the present invention.

Fig. 2 is that A among Fig. 1 is to view.

Fig. 3 is the end view of Fig. 1 middle shell 4.

Describe the details and the working condition of the concrete seeding unit that proposes according to the present invention in detail below in conjunction with accompanying drawing.

This seeding unit comprises a seed wheel 1, and its center is provided with axostylus axostyle 9, and feed shaft is contained in the axis hole 10 of axostylus axostyle 9, and seed wheel 1 is the toroidal cavity that a side is opened wide.When this seed wheel is sleeved on the housing 4 and side of housing forms fills kind of a district 5.Seed wheel 1 is to insert in the axis hole of housing 4 by axostylus axostyle 9 with the assembling of housing 4, and locatees back locking with nut 8.The side of housing 4 is provided with seed inlet 11, and this mouth communicates with the kind case.The face of cylinder of housing 4 is provided with the mouth 14 of charging seed, and seed retaining plate 12 is fixed on the medial surface of housing 4, and its structure is the cambered surface parallel with the housing face of cylinder.On the medial surface of the housing at mouthful 14 places of charging seed and inner cylinder face, have side direction and radially put kind of groove 13.On the outer rim of seed wheel 1 be have on its face of cylinder uniform cylindricality pack hole 2 with stairstepping that this hole links to each other in nest dosing hole 3.This seeding unit is owing to be provided with cylindricality pack hole 2 and interior nest dosing hole 3 combining forms of stairstepping, reach kind of the groove of putting that matches with it, can guarantee that seed quantitatively deposits in accurately and seeding smoothly, effectively solve the card type problem, and can adapt to the sowing of different size seed.

In order to guarantee the seeding unit reliably working, the axostylus axostyle 9 of seed wheel 1 adopts slidable fit with the axis hole of housing 4, and has fuel feed hole 7 on the axis hole wall of housing, has oil guide groove 6 in the axis hole inboard of housing, has good lubrication when rotating to guarantee seed wheel.

The number of nest dosing hole 3 can be provided with 14-28 in the desirable 130-260mm of the internal diameter of seed wheel 1, cylindricality pack hole 2 on it and stairstepping.

The course of work of this seeding unit is: when seed wheel 1 rotated, the seed that is entered seeding unit by seed inlet 11 entered cylindricality pack hole 2 by its flow by gravity and centrifugal force, enters nest dosing hole 3 in the stairstepping by cylindricality pack hole 2 then.Along with seed wheel is rotated further, what unnecessary seed fell back seeding unit fills kind district 5, and after forwarding certain angle to, the seeds in the ladder in the nest dosing hole 3 are launched, and enter a side of seed retaining plate 12, puts kind from charging seed and mouthfuls 14 launches along putting kind of groove 13, finishes the seeding process.

Claims

1, precision seeder for maize is by housing (4), seed wheel (1), when kind of a plate (12), feed shaft is formed, seed wheel (1) is sleeved in the housing (4), and be assembled together by the axis hole on its axostylus axostyle (9) and the housing (4), with nut (8) axial location, seed wheel (1) fills kind of a district (5) with housing (4) formation, seeding unit is contained in the axis hole (10) of axostylus axostyle (9), seed retaining plate (12) is contained on the madial wall of housing (4), have on the sidewall of housing (4) and plant the seed inlet (11) that case communicates, have charge seed mouthful (14) on the face of cylinder of housing (4), it is characterized in that on the face of cylinder of seed wheel (1), equidistantly being distributed with cylindricality pack hole (2) with stairstepping that cylindricality pack hole (2) links to each other in nest dosing hole (3), have on the medial surface of locating in charge seed mouthful (14) on the housing (4) and the face of cylinder side direction and radially put kind of a groove (13).

2, precision seeder for maize according to claim 1 is characterized in that axostylus axostyle (9) and housing (4) adopt the assembling that is slidingly matched, and have fuel feed hole (7), and have oil guide groove (6) in housing axis hole inboard on the housing shaft hole wall of assembling place.

3, precision seeder for maize according to claim 1 and 2, the number that it is characterized in that nest pack hole (3) in said cylindricality pack hole (2) and the stairstepping are 14-28.