CN108684264B

CN108684264B - Even sowing head

Info

Publication number: CN108684264B
Application number: CN201810288956.4A
Authority: CN
Inventors: 胡建平; 骆佳明; 刘伟; 韩绿化; 杨德勇; 董立立
Original assignee: Jiangsu University
Current assignee: Jiangsu University
Priority date: 2018-04-03
Filing date: 2018-04-03
Publication date: 2024-05-14
Anticipated expiration: 2038-04-03
Also published as: CN108684264A

Abstract

The invention provides a uniform sowing seeding head, which comprises a seed guide pipe and a diversion part; one end of the seed guide pipe is communicated with a seed conveying pipe of the seeder, and the other end of the seed guide pipe is communicated with an inlet of the diversion part; the surface of the diversion part is provided with a groove, and the diversion part is arranged on a sowing head upright post of the sowing machine through the groove; the split part is internally divided into a plurality of material dropping grooves by split walls; and a first baffle is arranged in each material dropping groove. The invention can realize the uniform transverse sowing and the uniform longitudinal sowing depth of the seeds, can lead the seeds to be more uniformly distributed, is more beneficial to the development and the growth of crops, leads the crops to increase the yield and the income and promotes the agricultural development.

Description

Even sowing head

Technical Field

The invention relates to the field of agricultural machinery, in particular to a uniformly sowing head.

Background

With the development of agricultural machinery, the combination of agriculture and agricultural machinery is becoming more and more intimate. The even sowing technology is based on the growth and development characteristics of crops, and fully exerts a coordination mechanism of uniform and robust individual crops and sufficient and reasonable population. The evenly-sowed crops create the condition of balanced nutrition of the individual plants because the individual plants are uniformly distributed, the individual nutrition competition in the seedling stage is small, the individual plants are robust in development, the formation and development of dominant tillers are facilitated, the growth of the individual plants is robust, the yield formation potential of the dominant tillers is fully exerted, and therefore the high yield and high efficiency of the crops are achieved. At present, some uniform sowing machines appear in China, but most of the machines are close-line drill sowing technology, and the uniform sowing is still not performed in a strict sense. The seeding depth of the close-packed drill crops is inconsistent, so that the growth speed of the crops is different, the phenomenon of unbalanced emergence of seedlings can occur, the yield increase of the crops is not facilitated, the front-rear plant spacing and the left-right plant spacing of the close-packed drill crops are still larger, and the advantages of the uniform seeding technology are not fully reflected.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the even sowing head which can realize the uniform sowing of seeds transversely and the uniform sowing depth longitudinally, can lead the seeds to be more uniformly distributed, is more beneficial to the development and the growth of crops, leads the yield and the income of the crops to be increased and promotes the agricultural development.

The present invention achieves the above technical object by the following means.

A uniform sowing head, which comprises a seed guiding pipe and a diversion part; one end of the seed guide pipe is communicated with a seed conveying pipe of the seeder, and the other end of the seed guide pipe is communicated with an inlet of the diversion part; the surface of the diversion part is provided with a groove, and the diversion part is arranged on a sowing head upright post of the sowing machine through the groove; the split part is divided into a plurality of material dropping grooves through split walls.

Further, the shape of the split flow part is circular arc, and the circular arc is centrosymmetric; the top of the splitting part is communicated with the seed guide pipe, and the chord length of the bottom of the splitting part is larger than that of the top of the splitting part.

Further, the bottom of the diversion part is provided with an inclined plane, and the inclined plane forms an obtuse angle with the advancing direction of the seeder. The inclined design is used for preventing the seeding head from being stuck to soil during the forward operation of the seeding head random set, so that the bottom of the seeding head is blocked.

Further, the cross-sectional areas of the blanking grooves are gradually reduced downwards from the seed guide pipe.

Further, the ratio of the maximum cross-sectional area to the minimum cross-sectional area of the blanking groove is as follows: 1.5 to 2.

Further, a tapering device is positioned in the seed guide tube and is used for reducing the flow in the seed guide tube.

Further, the tapering device is a pair of slant circular arc board downwards, circular arc board one end is fixed at the seed guide pipe inner wall. The seed can receive the reaction force spring of circular arc board, makes the seed that falls from the seed delivery pipe more scattered even, and the circular arc board makes the seed can scatter to both sides in addition, prevents that the seed from falling to the circumstances that the mid portion is more than two limit partial seeds when dividing the structure.

Further, the included angle between the arc plate and the wall of the seed guide pipe is 30-45 degrees.

Further, each blanking groove is internally provided with a first baffle, the first baffles are arranged obliquely downwards in the blanking groove, and the horizontal included angle of the first baffles is 30-45 degrees.

The invention has the beneficial effects that:

1. According to the even sowing head, the seed guiding pipe and the diversion part can realize the uniform sowing of the seeds transversely and the uniform sowing depth longitudinally, so that the seeds are more uniformly distributed, the development and the growth of crops are more facilitated, the yield and income of the crops are increased, and the agricultural development is promoted.

2. According to the even sowing head, the symmetrical arc plates are arranged, so that seeds can be sprung up by the reaction force of the arc plates, the seeds falling from the seed conveying pipe are scattered more uniformly, and in addition, the arc plates enable the seeds to scatter to two sides, so that the situation that more seeds exist in the middle part than in the two sides when the seeds fall to the distribution structure is prevented.

3. According to the uniformly-sowing head, the inclined plane is arranged at the bottom of the diversion part, so that the phenomenon that the sowing head is blocked due to soil adhesion during the random group advancing operation of the sowing head can be prevented.

Drawings

Fig. 1 is a schematic view of the installation of the dodging sowing head according to the present invention.

Fig. 2 is a three-dimensional view of a shunt portion according to the present invention.

Fig. 3 is a view showing an internal structure of the shunt part according to the present invention.

Fig. 4 is a stepped cross-sectional view of a diverter portion according to the present invention.

In the figure:

1-stand columns; 2-a seed conveying pipe; 3-a first baffle; 4-grooves; 5-seed guiding tube; 6-arc plates; 7-a split section; 8-dividing wall; 9-a blanking groove.

Detailed Description

The invention will be further described with reference to the drawings and the specific embodiments, but the scope of the invention is not limited thereto.

As shown in fig. 1, the seed-sowing head according to the present invention comprises a seed guide tube 5 and a split-flow portion 7; one end of the seed guide pipe 5 is communicated with the seed conveying pipe 2 inside the seeder, and the other end of the seed guide pipe 5 is communicated with the inlet of the diversion part 7; the seed guide pipe 5 is in interference fit with the seed conveying pipe 2; the surface of the diversion part 7 is provided with a groove 4, and the diversion part 7 is arranged on the sowing head upright post 1 of the sowing machine through the groove 4; the sowing head upright post 1 is arranged on the frame of the sowing machine and positioned behind the rotary tillage cutter and is used for installing the cutter shovel part and the even sowing head; the inside of the flow dividing part 7 is divided into a plurality of material dropping grooves 9 by a flow dividing wall 8; a first baffle plate 3 is arranged in each blanking groove 9. The first baffle plate 3 is obliquely downwards arranged in the blanking groove 9, and the horizontal included angle of the first baffle plate 3 is 30-45 degrees. As shown in fig. 2, the split portion 7 is circular arc-shaped, and the circular arc-shaped is centrally symmetrical; the top of the diversion part 7 is communicated with the seed guide pipe 5, and the chord length of the bottom of the diversion part 7 is larger than that of the top of the diversion part 7. This can increase the area of one seed sowing and in addition provide uniformity of sowing. The inclined plane is arranged at the bottom of the diversion part 7, and the inclined plane forms an obtuse angle with the advancing direction of the seeder, so that soil adhesion can be prevented when the seeding head is randomly assembled to advance, and the bottom of the seeding head is blocked. The obtuse angle ranges from 120 to 160 degrees. The bevel can be seen in fig. 4.

As shown in fig. 3 and 4, the cross-sectional area of the blanking grooves 9 is gradually reduced downwards from the seed guide pipe 5, and the ratio of the maximum cross-sectional area to the minimum cross-sectional area of the blanking grooves 9 is as follows: 1.5 to 2. The upper cross-sectional areas of the blanking grooves 9 are equal to realize the effect of uniform distribution, and the lower cross-sectional areas of the blanking grooves are equal to realize the uniform sowing of seeds by the uniform sowing head. The first baffle plates 3 are arranged in the plurality of blanking grooves, so that seeds uniformly scattered in the blanking grooves are scattered again, uniform seed scattering in the coverage range of a single blanking groove is realized, and the required uniform sowing width is achieved.

The tapering device is located in the seed guide 5 for reducing the flow in the seed guide 5. The tapering device is a pair of arc plates 6 which are inclined downwards, and one end of each arc plate 6 is fixed on the inner wall of the seed guide tube 5. The included angle between the arc plate 6 and the pipe wall of the seed guide pipe 5 is 30-45 degrees. Through setting up the circular arc board of symmetry, the seed can receive the reaction force spring of circular arc board, makes the seed that falls in the seed delivery pipe more scattered even, and the circular arc board makes the seed can scatter to both sides in addition, prevents that the seed from falling to the circumstances that the middle part is more than both sides part seed when shunting structure.

The examples are preferred embodiments of the present invention, but the present invention is not limited to the above-described embodiments, and any obvious modifications, substitutions or variations that can be made by one skilled in the art without departing from the spirit of the present invention are within the scope of the present invention.

Claims

1. A sowing head for evenly sowing, which is characterized by comprising a seed guide tube (5), a tapering device and a diversion part (7); one end of the seed guide pipe (5) is connected with the inside of the seeder, and the other end of the seed guide pipe (5) is communicated with the inlet of the diversion part (7); the surface of the diversion part (7) is provided with a groove (4), and the diversion part (7) is arranged on a sowing head upright post (1) of the sowing machine through the groove (4); the inside of the dividing part (7) is divided into a plurality of material dropping grooves (9) through dividing walls (8);

The tapering device is positioned in the seed guide pipe (5) and is used for reducing the flow in the seed guide pipe (5); the tapering device is a pair of arc plates (6) which are inclined downwards, and one end of each arc plate (6) is fixed on the inner wall of the seed guide tube (5); a first baffle (3) is arranged in each blanking groove (9), the first baffles (3) are obliquely downwards arranged on the blanking grooves (9), and the horizontal included angle of each first baffle (3) is 30-45 degrees; the two arc plates (6) are symmetrically arranged, a certain interval is reserved at the end parts of the arc plates (6), and a gap between the arc plates (6) is arranged in the direction corresponding to the blanking groove (9);

the shape of the shunt part (7) is circular arc; the top of the splitting part (7) is communicated with the seed guide pipe (5), and the bottom chord length of the splitting part (7) is larger than the top chord length of the splitting part (7); an inclined plane is arranged at the bottom of the diversion part (7), and an included angle between the inclined plane and the advancing direction of the seeder is an obtuse angle; the ratio of the maximum cross-sectional area to the minimum cross-sectional area of the blanking groove (9) is as follows: 1.5-2; the included angle between the arc plate (6) and the pipe wall of the seed guide pipe (5) is 30-45 degrees.

2. The reseeding head according to claim 1, wherein a number of said blanking channels (9) decrease in cross-sectional area downwards from the seed guide tube (5).