JPH062A - Non-tilled direct seeder - Google Patents

Abstract

PURPOSE:To make the seeding position and the seeding depth nearly constant by reshaping seeding furrows formed in a non-tilled field. CONSTITUTION:The non-tilled direct seeder is characterized by attaching plural furrowing pawls 14 rotating in nearly the same loci to a tillage shaft 9 rotating and lifting on the front side, providing a scraper 24 for finishing the base of a seeding furrow (A) formed by the furrowing pawls 14 at the rear of the rotation loci of the furrowing pawls 14 and facing a conduit 28 for seeding to a place just after the scraper 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a no-till direct sowing machine in which a sowing groove is formed in a no-till field and seeding is performed immediately after finishing the sowing groove.

[0002]

2. Description of the Related Art Conventionally, a method has been already known in which the entire surface of a field is cultivated by rotary tilling, and then seed rice is directly sown in the field. In addition, a non-tillage sowing machine is also known in which seeds are sown in a no-tillage field, and the side portions thereof are plowed and flipped up to cover the seeds on which the cultivated soil is sown.

[0003]

The known seeding method described above requires plentiful labor and time for the preparation of seeding because it cultivates the entire field and crushes the soil. Moreover, the seeding work requires labor saving. It was difficult. In order to solve such a problem, when trying to cover the seeds sown in the sowing groove by throwing the cultivated soil cultivated by the upper cut in the front part in the front part from the upper side to the rear so as to solve such a problem, Since the cultivated soil was added and the sowing depth fluctuated, proper sowing and growth could not be performed. In addition, the method of sowing directly in a no-tillage field scene and plowing the field on the side to cover the soil is easy for weeds to grow in the seeded area, and moreover there are many irregularities in the field scene and the cover soil thickness varies. Therefore, there were problems such as poor germination in the portion where the soil cover thickness was thin and bird damage was easily caused, and delayed germination and stunting in the thick portion.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a plurality of grooving claws that rotate on substantially the same locus are mounted on a tilling shaft that rises and rotates on the front side. The above-mentioned problem was solved by providing a scraper for finishing the bottom surface of the seeding groove formed by the claw, and allowing the seeding conduit to face immediately after the scraper.

[0005]

[Function] In a no-till field, when the seeder is run while rotating the tiller shaft in the reverse direction (rotating upward on the front side), the grooving claws form a sowing groove in the no-till field by uppercutting and plowing. The raised cultivated soil is thrown backward through the upper part, the scraper scoops out the cultivated soil accumulated in the seeding ditch, and the seeding device sows the seedling ditch immediately after dredging by the scraper, and the cultivated soil thrown behind it. Is covered with soil on the seeds sown at the bottom of the ditch.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A seeder according to an embodiment of the present invention will be described. Like the conventional tiller, the tiller 1 has a machine case 3 attached to a mission case having wheels 2 at the bottom, and the machine case 3 is mounted on the machine case 3. The engine 4 is mounted, the hitch metal fitting 5 is attached to the rear portion, and the handle 6 is provided on the upper portion.

The grooving device 7 supports a cultivating shaft 9 through a bearing on a lower part of a central chain case 8, and connects an upper input pulley 10 to an upper output pulley 11 of the transmission case by a belt 12. The cultivating shaft 9
At the side view, there are grooving claws 14 made up of a plurality of flat claws on the mounting studs 13 that radially protrude from the bosses that are laterally adjustable at both ends of the As shown in FIG. 1, it is mounted so that the front end of the support frame 7a is curved rearward on the ground contact side and adjacent to each other when viewed from the front and rear direction, and the front end of the support frame 7a is protruded alternately. It is detachably connected with a connecting pin.

The lateral frame extending from the rear part of the support frame 7a to both sides has a downwardly U-shaped cross section, and when viewed from the side, it straddles the cultivating shaft 9 and the front part and the rear part are in the field scene. Attaching the rotary cover 15 close to each other, the both side plates of the rotary cover 15 have a narrow interval (for example, about 8 cm) so as to closely follow both sides of the rotation locus of the tip of the grooving claws 14 as shown in FIG. ), The front part from the middle part of the peripheral plate is along the above-mentioned rotation locus, but the rear part bulges rearward, and the stable sled 17 can be vertically adjusted to the brackets 16 fixed to both side surfaces of the rotary cover 15. The depth of the seeding groove A formed by being screwed on the groove 14 is adjusted.

Further, a rake 18 inclined downward toward the other side plate of the rotary cover 15 is attached to the lower rear end of one side plate so as to face the seeding groove A, and the rake 18 is supported. 19 are provided with a large number of sieve rods 20 ... Protruding like comb teeth, and are inclined toward the throwing direction of the cultivated soil thrown by the grooving claws 14 ... The adjusting plate 19a fixed to the center of the rake 18 is rotatably supported by the fulcrum shaft 21 on the rear surface of the side plate, and the upper long hole 22 is screwed by the bolt 23 so that the tilting of the rake 18 can be adjusted. be able to.

A scraper 24 having an inverted V-shaped lower end is provided near the front end of the rear lower end of the rotary cover 15.
Since the scraper 24 is in a rearwardly inclined posture like a plow and is close to the rear surface of the locus of rotation of the grooving claws 14 ,. The cultivated soil thrown rearward is received by the scraper 24, and the cultivated soil is not deposited at least immediately after that, and the reverse V-shaped groove bottom formed by the scraper 24 is partially exposed.

The seeding and fertilizing apparatus 25 comprises a pair of left and right hoppers 26 and 26 for seeds and fertilizers mounted on both sides of the support frame, a feeding roll 27 facing a feeding outlet at a lower portion thereof, and a feeding roll of each hopper. It is composed of two conduits 28, ... Connected from the left and right of the outlet respectively, and these conduits 28..1 are set as one set for seeds and one for fertilizers, and their lower ends are provided immediately after the scraper 24. The seed groove is exposed from the side. However, when the hoppers 26, 26 are partitioned by a partition plate and the seed paddy and the fertilizer are separately stored, the conduits 28 for seeds and fertilizers for each seeding groove A,
28 can be lowered as it is without being crossed. The sprocket 30 mounted on the shaft of the pay-out roll 27 is linked by a chain 33 to a sprocket 32 mounted on the shaft of a drive wheel 31 with a protrusion that is rotatably supported on the outer rear side of the rotary cover 15.

Next, the operation will be described. In a non-tillage field, the hoppers 26, 26 are divided into the seeds that have been soaked and coated with an oxygen generating agent (calper), and the granular fertilizer that is coated with a difficult solvent to have a slow-acting effect. When the machine body is moved forward while driving the grooving claws 9 in the reverse direction so that the grooving claws 14 rotate upward in the front part, the grooving claws 14 scrape the front part at the front while the seeding groove having a narrow width (for example, 3 to 5 cm) is 3 cm. The cultivated soil that has been excavated to the inside and outside depths and guided up by the rotary cover 15 is thrown backward through the upward direction, and the scraper 24 enters the groove at a position 1 to 2 cm away from the rotation track of the grooving claw 14. By advancing in the state described above, the cultivated soil that enters the seeding groove A and becomes a pile is scooped out, and the bottom surface thereof is formed into an inverted V shape.

Since the drive wheel 31 rotates while being grounded, the feeding roll 27 interlocked with it drives the seed paddy and fertilizer stored in the hopper 26 in order, and these feed them.
The cultivated soil, which has been separately thrown into the right and left depressions on the bottom of the sowing groove through 8 and 28, collides with the rake 18 and is further crushed and sieved, so that fine cultivated soil leaks. Covered with seed paddy and granular fertilizer, large diameter cultivated soil, straw, weeds, etc. slide down on the rake 18 and flow diagonally backward along the sieve rod 20 ... toward the rice field on the side of the groove. At that time, since the sieve rods 20 ...
The arable soil that has been thrown up with large-sized soil masses and weeds that accumulate on top is washed away. Also, the soil cover is 8 if the particle size is 1 cm or less.
If the content is 0% or more and the thickness is 0.5 cm, drying damage will occur, and if it is 2 cm or more, germination will be poor due to oxygen deficiency.
It is desirable to set it to ˜2 cm.

By partitioning the partition plate 24a on the rear surface of the scraper 24 and arranging the lower portions of the conduits 28, 28 to the left and right of the partition plate 24a, the seed paddy and the granular fertilizer can be more clearly separated and charged. Moreover, even if the heights of the lower ends of the conduit 28 for seeds and the conduit 28 for fertilizer are vertically shifted,
Separation of seed paddy and fertilizer can be improved, and in any case, it is desirable that the distance between seed paddy and granular fertilizer is 2-3 cm. Then, the growth is improved by supplying water to the field at a time when germination occurs 7 to 10 days after sowing.

FIG. 5 shows another embodiment of the rake 18, in which the bases of the sieve rods 20 ... Are connected to the support rods 19 so that they can be rocked back and forth, and the bases of the sieve rods 20. Rod 35
Is connected to an adjusting lever 36 that can be tilted back and forth.
When the tilting operation is performed back and forth, the interval between the screen rods 20, that is, the mesh size can be expanded or contracted.

6 and 7 respectively show another embodiment of the rake 18. In this example, the fixed sieve 20a and the movable sieve 20b are alternately combined to support the base of the movable sieve 20b. A ring 3 fixed to a rod 19 and having a front end of the support rod 19 loosely fitted to an eccentric ring 37 integrated with the tiller shaft 9.
8 is interlocked with each other via a connecting rod 39, and when the tilling shaft 9 rotates, the movable sieve rods 20b ... Reciprocate back and forth, so that the crushing action and the sieve selecting action are further improved.

[0017]

As described above, according to the present invention, a plurality of grooving claws 14 that rotate on substantially the same locus on the tilling shaft 9 that rotates upward on the front side as described above.
And a scraper 24 for finishing the bottom surface of the seeding groove A formed by the grooving claws 14 is provided at the rear of the rotation loci of the grooving claws 14, and a seeding conduit 28 is provided immediately after the scraper 24. Since there is no need, the non-till direct sowing work can be saved, and moreover, the cultivated soil thrown backward by the grooving claws 14 does not enter the sowing groove, but the scraper 24 makes the sowing groove A It is possible to sow immediately after dredging, whereby the sowing depth and soil cover thickness can be made substantially constant, and it is possible to reliably prevent poor germination and growth failure.

[Brief description of drawings]

FIG. 1 is a side view in which a part of a seeding fertilizer applicator is cut away.

FIG. 2 is a cross-sectional view of a groove forming portion.

FIG. 3 is a cross-sectional view showing a groove-making state.

FIG. 4 is a transverse cross-sectional view showing a seeded and fertilized state.

FIG. 5 is a perspective view of a rake.

FIG. 6 is a perspective view of a swing rake.

FIG. 7 is a plan view of another example of the above.

[Explanation of symbols]

 7 Grooving device 8 Chain case 14 Grooving claw 17 Stabilizing sled 18 Rake 20 Screening rod 24 Scraper 25 Seeding and fertilizing device 28 Conduit

Claims (1)

[Claims] 1. A plurality of grooving claws 14 that rotate on substantially the same locus are mounted on a tilling shaft 9 that rotates upward on the front side, and the grooving claws 14 are formed at the rear of the rotation loci of these grooving claws 14. The scraper 24 for finishing the bottom surface of the seeding groove A
A non-tillage direct sowing machine characterized in that a conduit 28 for sowing is faced immediately after the scraper 24.