JP2930476B2 - No-till direct sowing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Conventionally, a method of directly sown rice seeds in a field after crushing the soil by rotary tilling the entire field is already known. A non-tillage seeder is also known, which is sown in a no-till field and plows its side to cover the sown seed.

[0003]

The above-mentioned known sowing method requires plenty of labor and time in preparation for sowing because the whole field is plowed and crushed, and furthermore, the sowing operation requires labor saving. It was difficult. In order to cover such seeds sown in the sowing groove by throwing the cultivated soil cultivated by the upper cut in the front part from the top and backward by rotating the groove claw in reverse to solve such a problem, the seeding groove Cultivated soil was introduced, sowing depth fluctuated, and proper sowing and growing could not be performed. In addition, the method of sown directly in a no-till field scene and cultivating the side field to cover the soil is easy for weeds to grow on the sown part, and the field scene has many irregularities and the soil cover thickness varies. Therefore, there are problems such as poor germination and susceptibility to bird damage in thin portions of the soil, and problems such as germination delay and growth failure in the thick portions.

[0004]

According to the present invention, a plurality of groove-forming claws rotating about the same locus are mounted on a tilling shaft which rises and rotates on the front side. The above-mentioned problem has been solved by providing a scraper for finishing the bottom surface of the seeding groove formed by the claws and directing a seeding conduit immediately after the scraper.

[0005]

[Action] In a no-till field, when the seeding machine is run while rotating the tilling shaft in the reverse direction (upward rotation on the front side), the grooving claw forms a sowing groove in the no-till field by upper cutting and plows. The raised cultivated soil is thrown backwards through the upper part, the scraper throws out the cultivated soil that has been thrown and accumulated in the seeding trench, and the seeding device sowed in the seeding trench immediately after dredging by the scraper, and was thrown backward. Is covered on seeds sown at the bottom of the ditch.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to a seeding machine shown in the drawings. A tiller 1 is provided with a machine base 3 in a transmission case having wheels 2 at a lower portion, similarly to a conventional one. The engine 4 is mounted, a hitch fitting 5 is attached to a rear portion, and a handle 6 is provided at an upper portion.

The groove forming device 7 supports a tilling shaft 9 at a lower portion of a center chain case 8 via a bearing, and connects an upper input pulley 10 to an output pulley 11 at an upper portion of the transmission case by an interlocking belt 12. The tillage shaft 9
Each of the mounting brackets 13 radially protruding from the boss mounted on the both end portions of the laterally adjustable (seeding interval adjustment) has a groove claw 14 composed of a plurality of saw claws in a side view. As shown in FIG. 1, the support frame 7 a is curved rearward on the grounding side, and is mounted so that the tips of adjacent ones alternately curve left and right when viewed from the front-rear direction, and the front end of the support frame 7 a is the hitch metal 5. Are detachably connected to each other by connecting pins.

The cross section of the horizontal frame extending from the rear of the support frame 7a to both sides has a downward U-shape. The side frame straddles the cultivation shaft 9 and the front and rear portions are in the field scene. The rotary cover 15 is mounted close to the rotary cover 15, and the distance between the side plates of the rotary cover 15 is narrowed (for example, about 8 cm) so as to be close to both sides of the rotation locus of the tip of the groove claw 14, as shown in FIG. ) And the front part from the middle part of the peripheral plate follows the above-mentioned rotation locus, but the rear part bulges rearward, and the stable sled 17 can be adjusted up and down on the bracket 16 fixed to both sides of the rotary cover 15. To adjust the depth of the seeding groove A formed by the forming groove claws 14.

A rake 18, which is inclined downward toward the other side plate, is mounted at the lower rear end of one side plate of the rotary cover 15 so as to face the seeding groove A. The rake 18 is supported by a support rod. 19, a large number of sieve rods 20 are protruded in a comb-like shape and are inclined in the throwing direction of the cultivated soil thrown by the groove-forming claws 14. The adjustment plate 19a is fixed to the rear surface of the side plate by a fulcrum shaft 21 at the intermediate portion, and the upper slot 22 is screwed by a bolt 23 so as to be adjustable in lateral tilt so that the inclination angle of the rake 18 is adjusted. be able to.

A scraper 24 having an inverted V-shaped lower end is provided near the front lower end of the rear 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 rotation locus of the groove 14, the scraper 24 is moved upward by the groove 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 bottom surface of the inverted V-shaped groove formed by the scraper 24 is partially exposed.

The seeding and fertilizing apparatus 25 includes a pair of left and right hoppers 26 and 26 for seeds and fertilizer mounted on both sides of the support frame, a feed roll 27 facing a lower feed outlet, and a feeder for each hopper. Each of the conduits 28 is connected to a pair of seeds and fertilizers one by one from the left and right sides of the outlet. It is on the seeding ditch from the side. However, when the respective hoppers 26, 26 are separated by a partition plate and the seed rice and the fertilizer are separately put, the conduits 28 for seed and fertilizer for each seeding groove A,
28 can be lowered without crossover. The sprocket 30 attached to the shaft of the feed roll 27 is linked to a sprocket 32 attached to the shaft of a driving wheel 31 with a projection that is supported on the rear outside of the rotary cover 15 by a chain 33.

Next, the operation will be described. In a no-till field, hoppers 26, 26 are separately charged with seeded rice seeds coated with an oxygen generating agent (calper) and granular fertilizers coated with a hard solvent to make them slow-acting. When the machine body is moved forward while rotating in the reverse direction so that the forming claw 14 rotates upward at the front, the forming claw 14 raises the seeding groove having a narrow width (for example, 3 to 5 cm) by 3 cm while scraping it up at the front. The excavated soil is excavated inside and outside, and the scraped-up cultivated soil is thrown rearward from above while being guided by the rotary cover 15, and the scraper 24 enters the groove at a position 1 to 2 cm away from the rotation locus of the groove claw 14. The cultivated soil that intrudes into the seeding groove A by being advanced in a state where the soil is deposited is scooped out, and the bottom surface thereof is formed into an inverted V-shape.

Since the driving wheel 31 rotates while touching the ground, a feeding roll 27 interlocking with the driving wheel 31 feeds out the seeds and fertilizer stored in the hopper 26 sequentially, and the feeder 27 feeds the seeds and fertilizer.
The cultivated soil that has been separately thrown into the left and right depressions at the bottom of the sowing groove through the insides of the pits 8, 28 collides with the rake 18 to collide with the rake 18 and is further crushed and sieved to separate fine cultivated soil. The large-diameter cultivated soil, straw or weeds, etc., which are covered with seed rice and granular fertilizer, slide down on the rake 18 and flow obliquely backward along the sieve rods 20. At this time, since the sieve rods 20 are inclined backward, the rake 18
Cultivated soil that has been thrown onto it by throwing large-diameter lumps, weeds, etc., to be deposited on it. The covering soil should be 1cm or less in particle size.
In a state in which 0% or more is contained, a thickness of 0.5 cm causes drying damage, and a thickness of 2 cm or more causes poor germination due to lack of oxygen.
It is desirable to set it to 2 cm.

If a partition plate 24a protrudes from the back of the scraper 24 and the lower portions of the conduits 28, 28 are distributed to the left and right of the partition plate 24a, the seed rice and the granular fertilizer can be more clearly separated and put. Also, even if the heights of the lower ends of the conduit 28 for seeds and the conduit 28 for fertilizer are shifted up and down,
The separation of the seed rice and the fertilizer can be improved, and in any case, the interval between the seed rice and the granular fertilizer is desirably 2-3 cm. Then, when water is supplied to the field at the time of germination 7 to 10 days after sowing, the growth is improved.

FIG. 5 shows another embodiment of the rake 18. The bases of the sieve rods 20 are connected to the support rods 19 so as to be able to swing back and forth, and the bases of the sieve rods 20 are connected. Rod 35
, And one end of the connecting rod 35 is connected to an adjusting lever 36 that can be tilted back and forth.
Is tilted back and forth, the spacing of the sieve rods 20, ie, the mesh size, can be adjusted.

FIGS. 6 and 7 show another embodiment of the rake 18. In this embodiment, the fixed sieve rod 20a and the movable sieve rod 20b are alternately combined to support the base of the movable sieve rod 20b. The ring 3 fixed to the rod 19 and the front end of the support rod 19 is loosely fitted to an eccentric wheel 37 integrated with the tilling shaft 9.
8 are linked to each other via a connecting rod 39. When the cultivating shaft 9 rotates, the movable sieve rods 20b... Reciprocate back and forth, so that the soil breaking action and the sieve sorting action are further improved.

[0017]

As described above, according to the present invention, a plurality of groove-forming claws 14 rotating on substantially the same locus on the tilling shaft 9 rotating upward on the front side.
A scraper 24 for finishing the bottom of the seeding groove A formed by the groove 14 is provided at the rear of the rotation locus of the groove 14, and a seeding conduit 28 is provided immediately after the scraper 24. As a result, the no-till direct sowing operation can be labor-saving, and the cultivated soil thrown rearward by the grooving claws 14 does not enter the sowing groove. It is possible to sow immediately after dredging, whereby the seeding depth and the cover soil thickness are made substantially constant, so that poor germination and growth failure can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is a side view in which a part of a sowing fertilizer is broken.

FIG. 2 is a cross-sectional view of a working groove.

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

FIG. 4 is a cross-sectional view showing a sowing fertilization state.

FIG. 5 is a perspective view of a rake.

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

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

[Explanation of symbols]

 7 Groove device 8 Chain case 14 Groove claw 17 Stable sled 18 Rake 20 Sieve rod 24 Scraper 25 Seeding fertilizer device 28 Pipe

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A01B 33/16 A01B 49/06 A01C 5/06

Claims (1)

(57) [Claims] A plurality of grooving claws rotating about the same locus are mounted on a tilling shaft that rotates upward on the front side, and formed by the grooving claws at the rear of the rotation locus of the grooving claws. Provided a scraper 24 for finishing the bottom of the seeding groove A,
A non-tillage direct sowing machine characterized in that a sowing conduit (28) faces directly after the scraper (24).