JPH061A - Direct seeder for non-tilled dry paddy field - Google Patents

Abstract

PURPOSE:To enable the practice of the good covering with soil by sowing seeds in a seeding furrow formed with furrowing pawls in a non-tilled field and sieving soil thrown with the furrowing pawls in furrowing. CONSTITUTION:The direct seeder for a non-tilled dry paddy field 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 cover passing from both sides and the front of the furrowing pawls 14 through the top surface and covering the rear and installing a seeding device for sowing seeds in a seeding furrow (A) formed with the furrowing pawls 14 in the upper part of the cover and further a rake 18 for sieving and grading plowed soil thrown with the furrowing pawls 14 in the upper part at the rear of the seeding position of the seeding device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a no-till dry-field direct seeding machine for directly sowing seeds in a no-till dry field.

[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.

[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 addition, when seed soil was covered with cultivated soil that had just been cultivated, straw, weeds, and large clods scattered in the field landed on the seed pad and caused germination or growth failure.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a plurality of grooving claws that rotate in substantially the same locus are mounted on a tilling shaft that rotates upward on the front side, and both sides and front surfaces of the grooving claws pass through the upper surface to the rear portion. A cover is provided to cover the seed, and a seeding device for sowing is installed on the upper part of the cover so as to sow in the seeding groove formed by the grooving claw, and the cultivated soil thrown by the grooving claw is sieve-selected above the rear part of the seeding position of the sowing device. The above problem was solved by providing a rake.

[0005]

[Operation] In a no-till dry field, when the sowing machine 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 seeding device sows the seeding groove formed by the grooving claws, the thrown cultivated soil is sieve-sorted by the rake, and the cultivated soil leaked from the rake is in the seeding groove. Is covered with seeds.

[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 supporting frame 7a extending from the upper part of the chain case 8 to both sides has a downwardly U-shaped cross section, and in a side view, the supporting frame 7a straddles the cultivating shaft 9 and has a front part and a rear part in the field. A rotary cover 15 close to the surface is attached, and both side plates of the rotary cover 15 are narrowed so as to be close to both sides of the turning locus of the tip of the grooving claws 14 ... As shown in FIG. About 8 cm), and the front part from the middle part of the peripheral plate is along the above-mentioned rotation locus,
The rear part is bulged rearward, and the stable sleds 17 are screwed onto the brackets 16 fixed to both side surfaces of the rotary cover 15 so as to be adjustable up and down. 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 has an intermediate portion pivotally 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. can do. Further, a groove molding plate 24 whose lower end has an inverted V shape is attached near the front end of the rear lower end of the rotary cover 15.

The seeding and fertilizing apparatus 25 is provided with the support frame 7
a, a pair of left and right hoppers 26 and 26 for seeds and fertilizers mounted on a lateral frame extending from the rear part to both sides, a feeding roll 27 facing the feeding port at the lower part thereof, and a feeding port of each hopper. Conduit 2 connected from the left and right respectively
.., and these conduits 28 ..., One set for seeds and one set for fertilizers are set as one set, and their lower end portions are exposed on the sowing groove A. 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 is being scooped up is thrown backward while passing through the upper portion while being guided by the rotary cover 15, and the groove forming plate 24 is 1 to 3
The bottom surface is molded into an inverted V shape by advancing while entering the groove at a position separated by 2 cm.

Since the drive wheel 31 is grounded and rotates, the feeding roll 27 interlocking with it drives the seed paddy and fertilizer stored in the hopper 26 in order, and these are fed into the conduit 2.
The cultivated soil, which has been separately thrown into the right and left depressions on the bottom of the sowing groove through the inside of 8, 28, collides with the rake 18 and is further crushed and sieved, and 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.

If a partition plate 24a is provided on the back surface of the groove molding plate 24 and the lower portions of the conduits 28, 28 are distributed 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 lower ends of the seed conduit 28 and the fertilizer conduit 28 are vertically shifted, the fertilizer and the seed can be separated well, and the fertilizer burning immediately after germination can be prevented. In any case, it is desirable that the distance between the seed paddy and the 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.

FIGS. 6 and 7 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 bases of the movable sieves 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.

[0016]

As described above, according to the present invention, a plurality of grooving claws 14 which rotate on substantially the same locus on the tilling shaft 9 which rises and rotates on the front side.
And a cover for covering the rear part from both sides and the front surface of the grooving claws 14 through the upper surface is provided, and a seeding device for sowing the seeding grooves A formed by the grooving claws 14 is installed on the upper part of the cover. The grooving nail 14 is provided above the rear part of the seeding position of the seeding device.
Since a rake 18 for screening the cultivated soil thrown by
Only the part to be sown needs to be cultivated narrowly, and after sowing in the sowing groove A, the cultivated soil scraped up by the grooving claws 14 ··· to collide with the rake 18 to form the sowing groove A is crushed and sieve-selected. Straws, weeds, large soil blocks, etc. can be removed to ensure that only fine soil is covered.

[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 Groove forming plate 25 Seeding and fertilizing device 28 Conduit

Claims (1)

[Claims] 1. A plurality of grooving claws 14 that rotate in substantially the same locus are mounted on a tilling shaft 9 that rotates upward on the front side, and a cover is provided to cover both sides and front surfaces of the grooving claws 14 from upper surfaces to upper surfaces. A rake 18 for sieving the seeding device for sowing in the seeding groove A formed by the grooving claw 14 on the upper part of the cover, and sieving the cultivated soil thrown by the grooving claw 14 above the rear part of the seeding position of the sowing device. No-till dry rice direct sowing machine characterized by the provision of.