JPH07114571B2 - Seeder - Google Patents

Description

Detailed Description of the Invention

[0001]

The object of the present invention is to provide seed paddy and the like on the bed soil in the seedling box,
It is an object of the present invention to provide a seeder having a novel structure, which has a streak shape and enables uniform and thin seeding.

[0002]

2. Prior Art Limited size (usually 58 cm in height and 28 in width)
When a large amount of seed rice is sown in the soil in a seedling box (cm, depth 3 cm), the germinated seedlings become dense and have poor air permeability,
The seedlings become damp and become slender and soft, and the growth of seedlings in each box becomes uneven. When such seedlings are transplanted to the field, the growth condition of the seedlings thereafter is deteriorated and the quality of rice is affected. Especially in cold regions such as the Tohoku and Hokkaido regions, raising healthy seedlings that can cope with cold damage is directly linked to the amount of yield, and thus healthy seedling production is an extremely important issue.

However, if it is attempted to sow 180 g or less of rice per one seedling box with a conventionally known sowing machine using a grooved roll-shaped sowing roll as shown in FIG. When received in the groove of up to the roll, the paddy stored in the groove will be scattered and uneven seeding will occur, and if the groove is made smaller, the paddy will be difficult to store and once Since it is difficult for the paddy to fall from the narrow groove and cause unevenness, it is almost impossible to evenly sow the seedlings in the seedling box using a seeding machine that used a grooved roll-shaped seeding roll. Has become.

The seeding amount in the cold region where it is necessary to grow more healthy seedlings is, in view of the relation with the harvest amount, a uniform amount of less than 130 g of rice per one seedling box, and a streak. The fact that sowing is extremely effective has already been proved, and therefore it is completely impossible to realize this condition with the above-mentioned conventionally known seeding machine, and it is a seeding roll in the form of a grooved roll. The fact is proved even by the fact that the seeding machine using the rice seedling has not yet provided anything suitable for such a purpose. As a result of repeating many trials and experiments over many years in order to meet the above demands, the present invention realizes a completely new seeding device that can finally cope with them, and its configuration will be described below. Will be described in detail.

[0005]

Structure of the Invention As can be understood from the embodiments representative of the present invention shown in the drawings, the seeder of the present invention basically has the following structure. That is, the paddy receiving belt 15 disposed substantially horizontally between the paddy supply port 7a of the hopper and the seedling box transport mechanism is wound around the roll-shaped drive pulley 13 and the roll-shaped driven pulley 12 having a small diameter section. While rotating at a constant speed, a large number of convex portions 15 are formed on the outer peripheral surface thereof at predetermined intervals over the entire surface and are orthogonal to the circumferential direction.
a, 15a, ..., and each of these convex portions 15a, 1
The paddy receiving groove 15b is formed between the paddles 5a, ...
However, the rotation axis of the leveling roll 16 is arranged obliquely so as not to be orthogonal to the belt circling direction, and the convex portions 15a, 15a ,. The paddle receiving belt 1 which is an end portion on the side deviated in the traveling direction
5, a surplus paddy discharge port 24 is formed at a position almost right next to the paddy receiving groove 15b, and a small gap that does not come into contact with the paddy receiving belt 15 is provided at the rear end of the paddy receiving belt 15 and a pulley having a small diameter section. Paddy receiving groove 1 that expands compulsorily after 13 laps
5b, 15b, ... Below the side of the same pulley 13
Paddy receiving grooves 15b, 15 immediately before the groove for discharging seed paddy on the one side
The seeding machine is configured so that a guide wall 21 capable of covering at least b, ... Is formed.

The paddy feeding port 7a is combined with a feeding roll 8 so that seeded paddy M, M, ... Having been put into the hopper 7 can be fed downward by a predetermined amount onto the paddy receiving belt 15. It is formed into a structure having a predetermined structure. The seedling box transporting mechanism can be adopted in addition to the structure shown in the embodiment described later, and a known appropriate transporting mechanism that can automatically and smoothly advance the seedling boxes 25, 25, ... Is.

The paddy receiving belt 15 is a pulley 13 with a small diameter section.
Alternatively, since the pulleys 13 and 12 are combined so as to be rotated and driven by 12, the entrance of the paddy receiving groove 15b (that is, the maximum position where the convex portions 15a and 15a face each other at the time of orbiting each pulley 13 or 12). (Outer edge)
Are forcibly expanded and fed from the hopper 7 and aligned with the paddy receiving grooves 15b, 15b, ..
..., but the seedling box 25 moving on the seedling box transport mechanism is streaked and uniformly sown. The paddy receiving belt 15 is not particularly limited in its material as long as it can function as a belt, and rubber or plastics alone, or one reinforced by arranging a core material inside is used. Good.

The convex portion 15a has a molded upper paddy receiving belt 15
It is most convenient to be integrally molded with, but it is of course possible to use a separate body which is later integrated with the outer peripheral surface of the paddy receiving belt 15 at predetermined intervals. The size of the convex portion 15a is about 1 per seedling box.
The conditions necessary to realize thin sowing of about 30 grams, that is, the conditions determined by the relative relationship between the orbital speed of the paddy receiving belt 15 and the moving speed of the seedling box 25, the seeded paddy density per row, or It is necessary to adopt the optimum value according to various conditions such as the relationship with the line spacing.

The leveling roll 16 is arranged above the paddy receiving belt 15, and the lower surface thereof is the paddy receiving belt 1.
5 is lightly contacted with the convex portion 15a of the roller 5, or is brought close to the convex portion 15a so as to support the shaft.
With respect to the extension line in the axial direction of 13, the leveling roll 16
The extension lines in the axial direction of must be installed obliquely in such a layout that the front and rear intersect. If the surface of the leveling roll 16 is made of a soft material such as a brush or a sponge, the seedlings M, M ,.

The guide wall 21 has a small-diameter cross section, that is, a paddy-receiving belt 15 formed with paddy-receiving grooves 15b, 15b, ... When it is rotated, the paddy receiving grooves 15b, 15
Expand the entrance side of b, ... to the outside,
b, 15b, ... A roll-shaped pulley 1 formed in a tubular shape having a diameter regulated by a curvature such that the seed rice M, M, ...
When the paddy-receiving belt 15 wound around 2 or 13 goes around the pulley 12 or 13, the convex portions 15a, 15a, 15a located around the pulley-shaped belt 12 or 13 are arranged radially, and the paddy-receiving groove 15b. As a result of forcibly expanding the respective groove widths toward the outside, the seed paddy M, M, ... May spill down even when the paddy receiving groove 15b is in the lateral direction, so that a small diameter cross section is generated. Paddy receiving grooves 15b, 15b, which are forcibly expanded when the pulley 12 or 13 goes around.
... Among the functions to rice receiving groove 15b of the previous groove which releases from the rice seeds in the lower right beside the pulley 13, 15b, to form a configuration that allows at least cover up ......, preventing them It is those, which at the rear end of the rice receiving belt 15, without contact with the surface of the belt 15, and paddy rice M, M, is formed at a small distance as not Shimawa leaking the ...... Is. The most typical embodiment embodying the present invention will be described below.

[0011]

EXAMPLE 1 FIG. 1 is a side view showing the seeding machine of the present invention with the front and rear parts omitted, and the cross section is shown except for the configuration around the paddy receiving belt 15. FIG. 2 is a side view relating to the structure around the paddy receiving belt, and the frame arranged on the front side in the drawing is omitted. FIG. 3 is a plan view in which a part of FIG. 2 is omitted, and the front frame omitted in FIG. 2 is included. In these drawings, the left side is referred to as the front and the right side is referred to as the rear.

As shown in FIG. 1, the machine casing 1 is
It is supported by legs 2 and 2 at an appropriate height, and rolling rolls 3, 3 and V pulleys 4 and 4 are suspended between the left and right machine frames 1 and 1, and V pulley 4 and Box feed belts 5 and 5 are wound between the boxes 4 and 5. A hopper 7 is provided on an upper portion of a supporting side plate 6 whose lower portion is fixed to the machine frame 1, a feeding roll 8 is arranged at a paddy supply port 7a of the hopper 7, and the supporting side plate 6 is pivotally mounted on the supporting side plate 6. The feeding roll 8 and the box feed belts 5 and 5 described above are driven by the motor 9 fixed to 2
Are rotated in the same direction by the V-belt 10.

Between the lower part of the pay-out roll 8 and the machine frame 1, a seeding structure portion centering on the paddy receiving belt 15 is arranged. As shown in FIGS. 2 and 3, the left and right side frames 11,
11 is a roll-shaped driven pulley 12 on the front side in the frame body connected by the front wall 22 and the rear wall 23, and a roll-shaped drive pulley 13 on the rear side.
2a and 12b are arranged so as to be axially supported by both side frames 11 and 11, and a paddy receiving belt 15 is wound around both pulleys 12 and 13.

On the surface of the paddy receiving belt 15, convex portions 15a, 15a, ...
Are formed by projecting at regular intervals, and each convex portion 15a, 1
The paddy receiving grooves 15b, 15b, ...
The intervals are such that seeds M, M, ... Are accommodated and arranged. A leveling roll 16 is provided above the paddy-receiving belt 15, and the lower surface of the roll 16 is lightly contacted with the convex portion 15a of the paddy-receiving belt 15 or is placed very close to the pad to support the roll. The extension lines in the axial direction of the leveling roll 16 are obliquely arranged so as to intersect with the extension lines in the axial direction of the respective pulleys 12 and 13 in such a manner that they are crossed in the front-rear direction.

On the rear side of the roll-shaped drive pulley 13, a guide wall 21 is formed so as to be fixed between the side frames 11, 11. The guide wall 21 and the convex portion 15a of the paddy receiving belt 15 should not be in contact with each other, and an appropriate gap should be provided so that the seed paddy M, M, ... Does not leak. The shaft 14a of the electric motor 14 is a side frame 1 on the left side in the drawing.
1, and the sprocket 17 is fitted on the shaft 14a. Further, sprockets 18 and 19 are fitted to the shaft 13a of the roll-shaped drive pulley 13 and the shaft 16a of the leveling roll 16, respectively, and the chain 20 is wound between these three sprockets 17, 18 and 19, and the same electric motor 14 is used. It is designed to rotate in the direction.

Downward end 16b of the leveling roll 16 (the third
A surplus paddy discharge port 24 is opened in the lower side frame 11 (on the right side in the drawing). In FIG. 1, reference numeral 25 is a seedling box, which is arranged below the paddy receiving belt 15 and is mounted on the box feeding belt 5 to advance.

[0017]

[Operation] Next, the operation will be explained based on the seeder shown as a representative example of the present invention. When the motor 9 is rotated in the arrow R direction and the electric motor 14 is rotated in the arrow P direction, the paddy receiving belt 15 moves in the arrow V direction, and the leveling roll 16 rotates in the arrow F direction. By the rotation of the feeding roll 8, the seed paddy M, M, ... Is fed out from the seed paddy hopper 7 and falls onto the paddy receiving belt 15 in front of the leveling roll 16.

By the movement of the paddy receiving belt 15, the seed pad M, which is projected above the protrusion 15a of the paddy receiving belt 15,
The M, ... Are carried to the right by the leveling roll 16 as shown in FIG. 3, and discharged to the surplus paddy discharge port 24. The paddy on the paddy receiving belt 15 that has passed through the leveling roll 16 is stored and aligned in the paddy receiving groove 15b.
.. only, and falls at the rear end of the paddy receiving belt 15 and drops onto the soil of the seedling box 25 which advances under the paddy receiving belt 15 in the direction of arrow S.

The paddy receiving belt 15 has a rack-shaped cross section in which the convex portions 15a and the paddy receiving grooves 15b are alternately repeated at regular intervals, and thus has a very flexible structure. Therefore, as shown in FIG. 2 and FIG. 5, both roll-shaped pulleys 1 that wind and drive this paddy receiving belt 15
2 and 13 can be cylindrical bodies having a small diameter cross section. When the paddy receiving belt 15 is wound so as to be in close contact with the roll-shaped pulley 13 having a small cross section, the convex portion 15a has a radial cross section whose longitudinal axis extends toward the center of the pulley 13.
The groove width of the paddy receiving groove 15b formed by the adjacent convex portions 15a, 15a when it goes around the same place is necessarily a groove that widens outward. The extent of this expansion increases as the diameter of the pulley 13 decreases, and the seed paddy M, M, ... Entering the paddy receiving groove 15b becomes very easy to fall.

As a result, the seed paddy M, M, ... May fall even when the paddy receiving groove 15b is oriented laterally. Therefore, the guide wall is slightly spaced from the rear end of the paddy receiving belt 15. 21 is provided so that when the paddy receiving groove 15b at the rear end of the paddy receiving belt 15 starts to shift downward from the lateral direction, the seed paddy in the groove can be dropped all at once. Thus, the seed paddy M in the paddy receiving groove 15b,
M, ... fall at a stretch and are sown in a neat streak shape as if a horizontal line is drawn on the surface of the soil in the seedling box 25.

On the other hand, in the conventional case, the grooves 26 are equally divided and have a sectional shape of a size as shown in FIG.
It is a seeding roll 26 having a, and if the diameter of this seeding roll is made small, the paddy feed port at the bottom of the hopper must be made smaller by that amount, and seed paddy is provided in the gap between the feed port and the seeding roll. The M, M, ... Causes a bridge phenomenon that makes it easier to bite, and there is a risk that the seed rice M, M ,.

Therefore, the seeding roll having a diameter of at least about FIG. 4 is unavoidable, and in the case of the seeding roll 26 having such a size, seeded rice M,
The initial positions where the M, ... Start to fall are not uniform, and the state of seeding in the seedling box 25 is not streaky but scattered. Further, if the groove 26a of the seeding roll 26 is made small for the purpose of thinly sowing, not only it becomes difficult to evenly house the seed rice M, M, ... In the groove 26a, but also the housed rice M, M. , .... It becomes difficult to drop the seeds and the difference in the seeding condition also occurs. Therefore, even if a small amount is tried to be seeded, the conventional seeding roll type naturally has a limit and cannot be realized.

[0023]

[Effect] The seeding machine of the present invention having the above-described action is provided with a large number of convex portions 15a, 15a, ...
Are arranged at a predetermined interval all over the outer peripheral surface, and the paddy receiving belt 15 in which the paddy receiving groove 15b is formed between the convex portions 15a, 15a is used as the roll-shaped drive pulley 1 having a small diameter section.
Since the roller 3 and the roll-shaped driven pulley 12 are rotated and driven, the entrance of the paddy receiving groove 15b is forcibly widened at the time of orbiting the small diameter section pulley, and the seed paddy M, M, It is possible to drop the ...... from the same groove 15b at a stretch, and even in the seedling box 25 moving on the seedling box transport mechanism, it is possible to realize a very beautiful streaking on the bed soil. It will exhibit its unique characteristics.

Also, the paddy M, M, ... Falling from the paddy supply port 7a of the hopper 7 and randomly placed on the paddy receiving belt 15 and protruding from the convex portion 15a has an oblique structure. The leveling rolls 16 arranged are the paddy receiving grooves 15
While pushing in the direction along b, the projecting seeds M, M, ... Are housed in the paddy receiving groove 15b.
Since the extra paddy M, M, ... is collected in the lateral direction of the paddy receiving belt 15 via the surplus paddy discharge port 24, there is less risk of damaging paddy buds during their operation. , A certain amount of paddy M, M, ... Is always housed in any paddy receiving groove 15b, 15b, .. Therefore, the above-mentioned characteristic is the leveling roller 1 of this oblique structure.
6 makes it even more reliable.

In addition, the seeding machine of the present invention employs a roll-shaped pulley 12 or 13 having a small diameter cross section to forcibly open the paddy receiving groove 15b, and the seed paddy M, M ,.
When dropping the ..., the guide wall 21 closely arranged behind it collaborates to accurately adjust the fall timing of the seeds M, M ,. It makes it possible to sow thinly.

As a result, the soil occupancy rate per seedling in the seedling box 25 is surely increased, and the seedlings can be grown in an aligned manner. Not only is it easy to grow thick and sturdy seedlings, but at the time of mechanical rice planting with a rice transplanter, it is possible to accurately scrape a predetermined number of seedlings from each seedling mat taken out from the seedling box in order, The number of seedlings to be planted in the field is fixed, and the number of seedlings per plant is reduced to ensure a favorable growth environment, which can lead to increased yields and many other excellent effects. Will be played.

As described above, the seeding machine of the present invention is one in which it is possible to surely realize the sowing of muscles, which was difficult to realize by the conventional sowing machines, and the sowing of thin muscles with a simple structure. Therefore, it is expected to greatly contribute to farmers, especially rice farmers located in cold regions.

[Brief description of drawings]

 The drawings show one embodiment of the present invention.

FIG. 1 is a side view in which the front and rear of a seeder and a part of legs are omitted.

FIG. 2 is a side view of a structural portion centering on a paddy receiving belt.

FIG. 3 is a plan view of a part of FIG. 2 omitted.

FIG. 4 is a side view of a main part for explaining the operation of the conventional technology.

FIG. 5 is a side view of an essential part for explaining the operation of the present invention.

[Explanation of Codes] 1 Machine frame 2 Legs 3 Rolling roll 4 V pulley 5 Box feed belt 6 Bearing side plate 7 Type paddy hopper 8 Feeding roll 9 Motor 10 V belt 11 Side frame 12 Rolled driven pulley 14 Electric motor 15 Paddy receiving belt 15a Same Convex part 15b Same paddy receiving groove 16 Leveling roll 16b Lower end of the leveling roll 17 Sprocket 18 Sprocket 19 Sprocket 20 Chain 21 Guide wall 22 Front wall 23 Rear wall 24 Excess paddy discharge port 25 Seedling box 26 Seeding roll M seeds

Claims (1)

[Claims] 1. A paddy receiving belt, which is arranged substantially horizontally between the paddy feeding port of the hopper and the seedling box transport mechanism, is wound around a roll-shaped driving pulley and a roll-shaped driven pulley having a small diameter section. While rotating at a high speed, a large number of convex portions are formed on the outer peripheral surface at predetermined intervals and are orthogonal to each other in the circumferential direction, and a paddy receiving groove is formed between the respective convex portions. On the other hand, with respect to the paddy receiving belt, the leveling roll is formed in a slanting shape in which the rotation axis of the leveling roller is not orthogonal to the belt circumferential direction and is in light contact with the surface of the convex portion. The surplus paddy discharge port is formed at the end of the leveling rolls on the side deviated in the belt advancing direction, at a position substantially right next to the paddy receiving belt and lower than the paddy receiving groove. A small gap that does not contact the belt is placed at the rear end, and a small cross-section -A guide wall is formed that can cover at least the paddy receiving groove immediately below the pulley in the paddy receiving groove that is forcibly expanded during the recirculation and immediately before the groove that discharges seed paddy. Sowing machine.