JP4997393B2 - Seeding machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seeder for sowing seeds in a field.
[0002]
[Prior art]
FIG. 6 (a) shows a side sectional view of a main part of a conventional seeder. The seeder 50 includes a seed storage case 52 that stores a large number of seeds 51, and a feeding roll 53 that is rotatably provided at a lower opening of the seed storage case 52. The feeding roll 53 is formed with feeding holes 54 for receiving one seed 51 at predetermined intervals in the circumferential direction. Then, by rotating the feeding roll 53, the seeds 51 in the seed storage case 52 are pumped one by one into the feeding hole 54, and the seeds 51 are sequentially taken out of the seed storage case 52.
[0003]
[Problems to be solved by the invention]
However, since each feeding hole 54 is formed to have a size that allows one seed 51 to enter, for example, as shown in FIG. 6B, the seed 51 in the seed storage case 52 moves to the left and right of the moving path of the feeding hole 54. If the feeding roll 53 is rotated and the feeding hole 54 is moved as shown by the dashed arrows in FIG. 3, the seed 51 does not enter the feeding hole 54.
[0004]
An object of the present invention is to solve the above-mentioned problems and to provide a seeder capable of smoothly removing seeds from a seed storage unit.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the seeder of the present invention comprises:
A seed storage unit that stores a large number of spherical seeds of uniform size , a feed roll that is provided in a lower opening of the seed storage unit and feeds seeds from the seed storage unit, and a seed delivery side in the lower opening A cleaving brush attached to the opening so as to be in sliding contact with the outer periphery of the feeding roll,
The feeding roll has at least one feeding hole for receiving one seed on the peripheral surface, and is rotatably attached so that the feeding hole can be moved between the inside and the outside of the seed storage unit. In the sowing machine
The feeding roll is provided with the feeding hole at the center in the width direction of the peripheral surface, and at both ends in the width direction is provided with a recess having all the following requirements (A) and (B) : The concave portion is configured to swing the seed inside the seed storage portion .
(B) The front side of the feeding roll in the rotational direction is deepened in a stepped manner, and the rear side in the rotational direction is formed so as to become gradually shallower.
(B) The opening of the recess is formed larger than the diameter of the seed, and the depth of the recess is formed to a depth about the radius of the seed .
[0006]
According to this configuration, since the concave portion is provided, the seed flow can be promoted by swinging the seed in the seed storage portion, so that the seed can smoothly enter the feeding hole.
In particular, when the feeding roll is rotated by the configuration (a), seeds enter the concave portion from the front side formed in a step shape, and the seeds move suddenly. As a result, the seed in the seed storage case can be rocked to promote the flow of the seed. Moreover, the structure of said (b) can prevent a seed from passing the lower side of the said chopping brush through the said recessed part.
[0007]
In addition, although it does not specifically limit in the said seeder, it is illustrated making it into the following aspect.
(1) The aspect provided with the guide part for aligning a seed in a line along the movement path | route of the said feeding hole.
(2) The said guide part was equipped with the guide member formed so that it might extend in the circumferential direction of the said delivery roll on the both sides of the movement path | route of the said delivery hole.
[0008]
In this aspect, by aligning the seeds in a line along the movement path of the feeding hole by the guide portion, the seeds are positioned almost directly above the feeding hole to be moved, and the seeds are located in the feeding hole. Seeds enter smoothly.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
1 to 5 show a seeder 1 according to an embodiment of the present invention. This seeding machine 1 is for tractor attachment that is pulled and driven by a tractor (not shown), a body 2, and front wheels 3 and rear wheels 4 that are rotatably supported on the front and rear of the body 2, respectively. A grooving / soil covering mechanism 5 that engraves a sowing groove in the field and covers the soil that has been flipped up in the rear sowing groove, a fertilizer application device 6 that applies fertilizer to the sowing groove, and seeds 9 in the sowing groove. A seeding device 7 for seeding, a medicine application device 8 for applying agricultural chemicals to the seeding groove, and a power transmission mechanism 11 for transmitting power input from the tractor via the input shaft 10 to each mechanism and device are provided. The airframe 2 includes a lift arm 12 and a mast 13 that extend forward, and tip portions of the lift arm 12 and the mast 13 are attached to the tractor and are towed.
[0012]
The seeding device 7 is provided in a seed hopper 15 supported by the machine body 2, a seed storage case 16 as a seed storage unit connected to the lower part of the seed hopper 15, and a lower opening of the seed storage case 16. And a seed dropping cylinder 18 for guiding the drawn seed 9 to fall on the sowing groove.
[0013]
The feeding portion 17 includes a feeding roll 20 as a feeding member that is rotatably supported by a lower opening of the seed storage case 16 via a rotation shaft 27, and a guide portion 21 attached to the seed storage case 16. ing. The tip of the chopping brush 22 is attached to the feeding side opening of the lower opening of the seed storage case 16 so that the tip of the chopping brush 22 slides on the outer periphery of the feeding roll 20. A cover 23 made of a transparent resin for confirming the movement of the seed 9 that has passed through is attached. Further, the counter-feeding side opening of the opening is closed by a seed discharge shutter 24 attached so as to be openable and closable. By sliding the seed discharge shutter 24 in the horizontal direction, when the opening is opened, the seed 9 in the seed storage case 16 is discharged through the tube portion 25 and the hose 26.
[0014]
A plurality (eight in this example) of delivery holes 30 are formed at predetermined intervals in the circumferential direction at positions A and B in the circumferential direction of the delivery roll 20 (every central angle 45 ° in this example). In addition, a pair of seed jumping grooves 31 passing through the centers of the feeding holes 30 at the positions A and B are formed in an annular shape. Each feeding hole 30 is formed in such a size that one seed 9 enters and two or more seeds 9 do not enter, and when the feeding roll 20 is rotated, it is formed between the inside and the outside of the seed storage case 16. Thus, the feeding hole 30 can be moved. The seed jumping groove 31 is formed deeper than the feeding hole 30, and a seed jumping plate 32 attached to the tip of the seed discharge shutter 24 is disposed in the groove. The seed jumping plate 32 forcibly jumps out the seed 9 that does not naturally fall out of the hole even when the feeding hole 30 faces downward.
[0015]
Moreover, the recessed part 33 for rock | fluctuating the seed 9 inside the seed storage case 16 is provided in the both ends side in the width direction of the surrounding surface of the feeding roll 20. A plurality (six in this example) of the recesses 33 are formed at predetermined intervals in the circumferential direction (in this example, every 60 ° central angle). Each concave portion 33 is formed so that the front side in the rotation direction of the feeding roll 20 is deepened in a stepped manner and gradually becomes shallower toward the rear side in the rotation direction. Thereby, when the feeding roll 20 is rotated, the seed 9 enters the recess 33 from the front side formed in a step shape, and the seed 9 moves suddenly. Thereby, the seed 9 in the seed storage case 16 can be swung, and the flow of the seed 9 can be promoted. Although not particularly limited, when the opening of the recess 33 is formed larger than the diameter of the seed 9 as in this example, the depth of the recess 33 is set to a depth at which the entire seed 9 does not enter (preferably a depth of about the radius of the seed 9). Is preferable. This is to prevent the seed 9 from passing under the chopping brush 22 through the recess 33.
[0016]
The guide portion 21 is integrally formed with a tip portion 35 formed so as to extend along the circumferential direction of the circumferential surface of the feeding roll 20 and a support portion 36 for supporting the tip portion 35 to the seed storage case 16. A guide part body 37 is provided, and guide plates 39 are provided on both sides of the tip part 35 through a pair of upper and lower spacers 38. The guide plate 39 is formed in a shape substantially equal to the cross-sectional shape of the distal end portion 35. As shown in FIG. 2, the front end portion 35 is formed with a side surface 35 a at a position substantially in contact with the peripheral edge of the feeding hole 30 so as not to block the feeding hole 30 in a plan view. And the space | interval of this side surface 35a and the front-end | tip part side surface 39a of the guide plate 39 is set so that it may become substantially equal to the diameter of opening of the feeding hole 30. FIG. Thus, the guide part 21 forms guides on both sides of the movement path of the feeding hole 30 by the tip part 35 and the guide plate 39 as a guide member, and aligns the seeds 9 in a line along the movement path of the feeding hole 30. It is supposed to let you.
[0017]
Next, operation | movement of this seeding apparatus 7 is demonstrated. When the seeder 1 in which the seeds 9 are put in the seed storage case 16 is installed in the field, attached to the tractor and pulled, the feeding roll 20 moves in the direction indicated by the solid line in FIGS. 3 and 4 according to the progress of the seeder 1. Rotate to. With this rotation, the seeds 9 in the seed storage case 16 are sequentially pumped into the feeding hole 30 as shown in FIG. Further, by the same rotation, the seed 9 in the seed storage case 16 is swung by the recess 33 formed in the feeding roll 20 as shown in FIG. Thereby, the flow of the seed 9 is promoted, and the seed 9 is smoothly fed into the guide formed by the distal end portion 35 of the guide portion 21 and the guide plate 39, and the seed 9 is smoothly fed into the feeding hole 30.
[0018]
Now, the seed 9 pumped up to the feeding hole 30 passes under the cutting brush 22 and is guided by the cover 23, then falls from the feeding hole 30, passes through the seed dropping cylinder 18, and enters the sowing groove. It falls and is covered with the grooving / covering mechanism 5. Along with the sowing, fertilizer is appropriately applied to the sowing groove by the fertilizer application device 6 or the agricultural chemical is appropriately applied by the drug application device 8.
[0019]
Although the said Example demonstrated the seeder 1 for tractor attachment, this invention can be implemented in various seeders, such as a seeder for towing a tailor, a hand-held seeder, and is not limited to the said Example.
[0020]
According to the seeder 1 of the present invention configured as described above, since the guide portion 21 for aligning the seeds 9 in a line along the moving path of the feeding hole 30 is provided, the feeding hole to be moved. The seed 9 can be positioned substantially directly above 30. For this reason, since the seed 9 smoothly enters the feeding hole 30, the seed 9 can be smoothly taken out from the seed storage case 16 as a seed storage section.
[0021]
Further, since the feeding roll 20 as the feeding member includes the recess 33 for swinging the seed 9 inside the seed storage case 16, the flow of the seed 9 in the seed storage case 16 can be promoted. For this reason, since the seed 9 smoothly enters the feeding hole 30, the seed 9 can be smoothly taken out from the seed storage case 16.
[0022]
In addition, this invention is not limited to the said embodiment, For example, it can also be suitably changed and embodied as follows, for example in the range which does not deviate from the meaning of invention.
(1) A convex portion is provided on the peripheral surface of the feeding roll 20 instead of the concave portion 33 or together with the concave portion 33.
(2) Omit the recess 33 from the peripheral surface of the feeding roll 20.
(3) The guide part 21 is omitted.
[0023]
【Effect of the invention】
According to the seeder of this invention, there exists the outstanding effect that a seed can be taken out smoothly from a seed storage part.
[Brief description of the drawings]
FIG. 1 is a side view of a seeder according to an embodiment of the present invention.
FIG. 2 is a plan view showing a feeding part of the seeding machine.
3 is a cross-sectional view taken along line III-III in FIG.
4 is a cross-sectional view taken along line IV-IV in FIG.
FIG. 5 is a perspective view showing a main part of the feeding portion.
FIG. 6 is a view showing a feeding portion of a conventional seeder, where (a) is a side cross-sectional view and (b) is a plan view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sowing machine 7 Seeding apparatus 9 Seed 16 Seed storage case 17 Feeding part 20 Feeding roll 21 Guide part 30 Feeding hole 33 Concave part 35 Tip part 39 as a guide member 39 Guide plate as a guide member

Claims (1)

A seed storage unit that stores a large number of spherical seeds of uniform size , a feed roll that is provided in a lower opening of the seed storage unit and feeds seeds from the seed storage unit, and a seed delivery side in the lower opening A cleaving brush attached to the opening so as to be in sliding contact with the outer periphery of the feeding roll,
The feeding roll has at least one feeding hole for receiving one seed on the peripheral surface, and is rotatably attached so that the feeding hole can be moved between the inside and the outside of the seed storage unit. In the sowing machine
The feeding roll is provided with the feeding hole at the center in the width direction of the peripheral surface, and at both ends in the width direction is provided with a recess having all the following requirements (A) and (B) : A seeder configured to swing seeds inside the seed storage unit by the recess .
(B) The front side of the feeding roll in the rotational direction is deepened in a stepped manner, and the rear side in the rotational direction is formed so as to become gradually shallower.
(B) The opening of the recess is formed larger than the diameter of the seed, and the depth of the recess is formed to a depth about the radius of the seed .

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