JP2015053869A - Seeding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem in which: in the direct seeding cultivation, application of the so-called gel coated seeds is promoted, however, because a gel layer contains a lot of moisture and is rich in viscosity and the like, the seeds tend to stick together in the seed hopper thereby forming a bridge, and seeding accuracy is deteriorated.SOLUTION: In a seeding device 2 comprising a hopper part 17a accommodating gel coated seeds (hereinafter referred to as "seeds") 21, a delivery roll 20 having a roll hole 20b, to which the seeds 21 fall and enter, at an outer peripheral part 20a, and an arcuate guide plate 24 along the outer peripheral part 20a, there are provided: a rotary body 28 for arranging the seeds 21 one by one while rotating the seeds inside the hopper part 17a and guiding the same to the roll hole 20b; a solution application mechanism 29 for supplying a solution to a part between the guide plate 24 and the outer peripheral part 20a in the vicinity of a guide plate starting end part 24a, and coating the seeds 21 inside the roll hole 20b; and an energizing fall mechanism 30 for letting the seeds 21 fall while being energized from the vicinity of a guide plate trailer 24b.

Description

  The present invention includes a seed hopper that accommodates a gel-coated seed, a roll having a roll hole into which the gel-coated seed from the seed hopper falls, and a feed roll that rotates by a substantially horizontal roll shaft, and along the outer periphery. In particular, the seeding device with arc-shaped guide plates arranged in close proximity to each other, in particular, the stirring of the gel-coated seeds and the transfer to the roll hole, gel to improve the sowing accuracy by eliminating and preventing the gel-coated seed bridge It is related with the structure about application | coating of the solution of a layer, and the fall from a supply roll.

For direct sowing cultivation in which seeds are sown directly in a field without seeding on the nursery, so-called gel-coated seeds, which are coated with an elastic polymer gel containing oxygen, nutrients, drugs, etc., are currently being applied. The gel-coated seeds promote and homogenize seed germination, and the germination rate is greatly improved.
For such gel-coated seeds, there is a strong demand for mechanization of sowing work for gel-coated seeds in order to save labor and improve work efficiency. Therefore, it is conceivable to apply a conventional sowing apparatus in which seeds from a seed hopper on the upper part of the aircraft are dropped and sown in a sowing groove made with a grooving tool. However, since the approximately spherical gel-coated seeds fall freely under their own weight, the seeding interval changes by rolling in the falling sowing groove in the groove direction, or stops midway without falling to the bottom of the sowing groove, sowing depth. In some cases, the depth became shallow.
Therefore, a seed hopper having a substantially horizontally rotating eye plate is provided, and the gel-coated seeds in the seed hopper are put into a hole in the rotating eye plate one by one and transferred to a dropping position to freely fall, The fallen gel-coated seeds are separated and held one by one in a holding hopper provided separately from the seed hopper, and the held gel-coated seeds are held and sown by a sowing arm. A technique related to a sowing apparatus with improved sowing accuracy is known (for example, see Patent Document 1).

JP 2000-333511 A

However, since the gel layer of the gel-coated seed contains a lot of moisture and is rich in viscosity and elasticity, in the seed hopper containing a large amount of gel-coated seed, the seeds adhere to each other and a bridge is generated, In the feeding portion, the gel-coated seed may adhere to the inner wall surface and not fall. For this reason, in the above technique, the gel-coated seeds are clogged by entering a plurality of grains in the hole of the eye plate, and cannot be dropped from the seed hopper into the holding hopper. There was a problem that seeds adhered to the inner wall surface and could not roll to a predetermined position, so that the seeding accuracy deteriorated without being taken out by the seeding arm.
In particular, in order to improve the germination rate by quickly decomposing after sowing, the gel layer is usually coated in advance in the seed hopper, so that the gel layer starts to dissolve in the seed hopper. Will contain seeds. For this reason, in the above-mentioned technique, dissolution of the gel layer proceeds with the progress of the sowing time, and the gel-coated seed that enters the hole in the eye plate later becomes more brittle and the seeding accuracy is further deteriorated. there were.
In addition, in the above technique, it is necessary to provide a sowing arm having a holding hopper and a complicated drive mechanism in addition to a normal seed hopper outside the sowing apparatus, which requires a large design change and increases the apparatus cost. At the same time, there has been a problem that the operability of the sowing machine incorporating the sowing apparatus deteriorates due to the increase in size and weight of the sowing apparatus.

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
That is, in claim 1, a seed hopper that accommodates a gel-coated seed, a feed roll that has a roll hole into which the gel-coated seed from the seed hopper falls and is rotated by a substantially horizontal roll shaft, and the outer periphery In a seeding device provided with an arcuate guide plate arranged close to the part, while rotating in the seed hopper, the rotating body for aligning the gel-coated seeds one by one and guiding them to a roll hole, and the feeding In the vicinity of the guide plate start end where the roll starts to sink under the guide plate, a solution of the gel layer is supplied between the guide plate and the outer peripheral portion, and the solution is supplied to the gel in the roll hole. A solution application mechanism for applying to the coated seeds, and in the vicinity of the end of the guide plate where the feeding roll comes out from under the guide plate, It is provided with a biasing dropping mechanism for dropping by energizing the gel-coated seeds which have been held in the roll hole is transported.
3. The urging / falling mechanism according to claim 2, wherein the biasing and dropping mechanism includes a plate-shaped scraper disposed in the vicinity of the terminal end portion of the guide plate, and a slit formed in an annular shape in the feeding roll over the entire circumference around the axis of the roll shaft. The slit groove is formed by cutting radially inward from the bottom of the roll hole, and the tip of the scraper is inserted into the slit groove to contact the groove bottom, The scraper is disposed to face the guide plate end portion so that the edge portion on the guide plate end portion side of the scraper is inclined obliquely upward with respect to the guide plate end portion.
The depth of the groove bottom according to claim 3 increases or decreases following the depth of the hole bottom of the roll hole, and the scraper is configured to be rotatable around a base end portion.
5. The solution application mechanism according to claim 4, wherein the solution application mechanism includes a brush portion at a tip portion of a tube from a solution tank storing the solution at a vicinity of the guide plate start end portion and an outer peripheral portion immediately before the guide plate start end portion. While sandwiched in the gap between the brush to be contacted, the solution from the gap is adsorbed to the inner peripheral portion of the guide plate, the gel-coated seed of the roll hole is brought into contact with the inner peripheral portion, and the solution is supplied. It is something to apply.
6. The front end of the tube according to claim 5, wherein an oblique opening cut obliquely with respect to the longitudinal direction, and a slit cut in the longitudinal direction from the inner cut end of the oblique opening toward the tube body side. The tip opening part which consists of a part is formed.
In Claim 6, while forming the said roll hole so that at least one part of the said gel covering seed may protrude outward from an outer peripheral part, the inner peripheral part of this guide plate is the said delivery roll. It is configured so as to be constantly urged toward the outer peripheral portion.
8. The rotating body according to claim 7, wherein the rotating body includes a stirring shaft that rotates in conjunction with the roll shaft, and a pair of stirring pins formed by juxtaposing two stirring pins extending radially from the stirring shaft in the axial direction. The stirring pin pair is rotated in a direction opposite to the downward direction of the gel-coated seed from the seed hopper, and the minimum distance between the two stirring pins is larger than the seed diameter of the gel-coated seed, And the diameter of the hole of the roll hole is set to be smaller or substantially the same diameter, and the central part between the two agitation pins is set in the same rotational plane as the central part of the hole of the roll hole, and the agitation is performed. The clearance gap between the rotation locus of the tip of the pin and the passage surface where the gel-coated seed descends is set smaller than the seed diameter.

Since this invention was comprised as mentioned above, there exists an effect shown below.
That is, in the first aspect, the rotating body can reliably drop each grain into the roll hole one by one while stirring the gel-coated seed in the seed hopper to eliminate the bridge. With the application mechanism, the solution can be supplied after dropping into the roll hole, and the occurrence of bridges in the seed hopper can be kept to a minimum, whereby clogging due to bridges can be reliably avoided. Further, the urging / falling mechanism causes the gel-coated seeds fed from the feeding rolls to drop vigorously toward the bottom of the sowing groove, so that the gel-coated seeds adhere to the inner wall surface of the feeding part or roll in the sowing groove. It can be prevented from moving or stopping on the way to the bottom of the sowing groove. Therefore, gel-coated seeds can be sown with a certain interval and with a certain depth with high accuracy, and sowing accuracy can be greatly improved. In addition, these rotating bodies, the solution application mechanism, and the urging / falling mechanism can all be easily incorporated into the inside of a roll type seeding device consisting of a seed hopper, a feeding roll, and a guide plate. The cost of the apparatus can be reduced and the seeding apparatus can be reduced in size and weight, and the operability of the seeder incorporating the seeding apparatus can be improved.
According to claim 2, the gel-coated seed fed from the terminal end of the guide plate is caused to collide obliquely with the edge of the scraper supported by the slit groove, and the collision reaction force increased by the elastic force of the gel layer at that time The gel-coated seed can be urged and dropped downward. As a result, the gel-coated seeds can be reliably dropped to the bottom of the seeding groove without rolling unnecessarily, so that seeding at a constant interval and a constant depth can be performed more accurately, and a scraper is arranged near the end of the guide plate. With this simple structure, the urging and dropping can be performed, and the apparatus cost can be further reduced and the seeding apparatus can be reduced in size and weight. Furthermore, since the gel-coated seed is caused to collide with the small edge of the collision surface, adhesion of the gel-coated seed to the scraper can be prevented. Thereby, the delay of the fall time of a gel-coated seed can be made small, and sowing at a fixed interval can be performed more accurately. In addition, since the scraper is disposed so as to face the guide plate end portion so that the edge portion is inclined obliquely upward with respect to the guide plate end portion, without contacting the base end portion of the scraper in the middle of dropping, The gel-coated seed can be dropped vertically as it is, dropped at a uniform drop speed, and sowing accuracy can be further improved.
According to claim 3, for example, even if the roll diameter of the feeding roll remains constant and the particle diameter of the gel-coated seed increases and the bottom of the roll hole becomes deeper, the groove bottom of the slit groove also becomes deeper. The difference in depth from the bottom to the hole bottom (hereinafter referred to as “support depth”) can be kept substantially constant, and the tip of the scraper can be reliably inserted and supported in the slit groove. At this time, the scraper pivots upward with its base end as the center, and is inserted into the slit groove and supported by contact with the groove bottom. When the bottom becomes deeper, the scraper also rises upward, and the horizontal distance (hereinafter referred to as “feeding gap”) from the portion where the gel-coated seed collides with the edge (hereinafter referred to as “collision location”) to the end of the guide plate is increased. Expanding. As a result, even if the particle size of the gel-coated seeds is changed, the scraper can be changed by simply changing the position and posture of the common scraper after replacing the roll with a roll hole and a slit groove corresponding to the particle size. Can be inserted and supported securely in the slit groove, the feeding gap can be made appropriate according to the particle size of the gel-coated seed, and the device cost can be further reduced, and the sowing device can be reduced in size and weight. .
According to claim 4, the solution flowing out from the tube can be supplied to the gel-coated seed in the roll hole after removing impurities such as soil and straw by the brush portion, and the gel layer surface of the gel-coated seed is applied. It is not covered with impurities, and the uncoated surface of the solution on the surface of the gel layer is reduced, so that the gel layer dissolution proceeds uniformly. In addition, the tip of the tube can be supported by utilizing the gap between the guide plate and the brush, which are existing components, so there is no need to install additional support components, and the number of components can be reduced, reducing component costs. Thus, maintenance can be improved. In addition, since the solution is applied to the gel-coated seed while the surface of the gel layer is mechanically scratched by the inner periphery of the guide plate, the gel layer dissolves compared to the case where the solution is simply sprayed onto the gel-coated seed. And the germination rate can be greatly improved in combination with the uniform dissolution of the gel layer.
According to the fifth aspect of the present invention, a long opening can be secured at the tip of the tube by connecting the diagonal opening and the slit in the longitudinal direction, and the slit and the diagonal opening that are different shapes are combined to form a tube. The deformation of the tip can be made non-uniform, and even if the tip of the tube is strongly sandwiched and crimped in the gap, at least a part of the tip opening is opened, so that the solution can be reliably discharged from the gap. Can be drained.
According to claim 6, since the gel-coated seed is pushed into the roll hole by the inner peripheral portion of the guide plate in the biased state during the rotation of the feeding roll, the inner peripheral portion of the guide plate and the gel layer surface of the gel-coated seed The friction force between the gel-coated seeds can be rotated in the roll hole, and by this rotation, the gel-coated seeds are applied many times to the gel-coated seeds, and the gel layer dissolution is further promoted to increase the germination rate. Further improvement can be achieved.
According to claim 7, after the gel-coated seeds are lifted by the rotation of the stirring pin pair to break the bridge, the gel-coated seeds are aligned in a row so as to pass between the stirring pins one by one. Can be dropped into the center of the roll hole, eliminating the bridge with a simple structure by simply placing a rotating body in the seed hopper, further reducing the cost of the device, reducing the size of the seeding device Weight reduction can be achieved.

It is a side view which shows the whole seeder's structure concerning this invention. It is a side view of a seeding apparatus. It is side surface partial sectional drawing of a seeding apparatus lower half part. It is a back surface partial sectional view. It is a top view of a periphery of a solution tank. It is a figure which shows the clamping condition of the front part of a 2nd tube, Comprising: Fig.5 (a) is side sectional drawing of the front part of a 2nd tube, FIG.5 (b) is a top view similarly. It is a figure which shows the feeding condition of a gel coating seed, Comprising: Fig.7 (a) is side surface partial sectional drawing of the sowing apparatus lower part in the feeding clearance 66a, FIG.7 (b) is seeding in 66b where a feeding clearance is larger than 66a. FIG. 7C is a partial cross-sectional side view of the lower part of the device, and FIG. 7C is a partial cross-sectional side view of the lower part of the seeding device at 66c where the feeding gap is larger than 66b.

Hereinafter, embodiments of the present invention will be described in detail.
The direction indicated by the arrow F in FIG. 1 is the forward direction of the hand-seeded seeder 1, and the positions and directions of the members described below are based on this forward direction.

First, the whole structure of the hand-held seeding machine 1 equipped with the seeding device 2 according to the present invention will be described with reference to FIGS.
In the seeder 1, left and right main frames 3L and 3R are arranged in the front-rear direction, and the axle 4a of the front wheel 4 is supported between the front portions of the main frames 3L and 3R, while the main frames 3L and 3R A roller frame 10 protrudes rearward from the rear end, and the axle 11 a of the pressure reducing roller 11 is supported on the roller frame 10. A plurality of lugs 4b are provided around the side surface of the front wheel 4 to prevent the front wheel 4 from slipping.

  Further, a support stay 12 is installed between the left and right main frames 3L and 3R immediately after the front wheel 4, and the front portion of the support stay 12 is brought close to the front wheel 4 to form a scraper portion. A handle 13 made of a U-shaped bar that opens downward is provided upright from a substantially central portion in the front and rear of the stay 12, and the handle 13 is used as a grip when carrying the seeder 1. From the rear part of the main frames 3L and 3R, a frontal gate-type handle 19 is provided so as to project obliquely upward and rearward.

  In addition, a support rod 15 having a groove forming claw 14 attached to the lower end is fixed to the rear portion of the support stay 12 so that the vertical adjustment is possible, and a cover plate 16 is rearward from the rear end of the groove forming claw 14. Is protruding. And the support part 18a of the sowing apparatus 2 concerning this invention is fixed to the rear end of such a support stay 12. FIG.

  In the seeding device 2, the roll shaft 8 of the feeding roll 20 is horizontally mounted in the lower part of the seeding device 2, and an input sprocket 68 is fixed to the right end of the roll shaft 8. A drive sprocket 5 is also fixed to the right end of the axle 4a, and the drive sprocket 5 and the input sprocket 68 are wound by a chain 7 in a chain case 6 provided on the right main frame 3R. It has been turned.

  In the configuration as described above, when the seeder 1 is pushed forward while holding the handle 19, the front wheel 4 rotates, and the rotational force causes the axle 4a, the drive sprocket 5, the chain 7, and the input sprocket 68 to move. Thus, the feed roll 20 is transmitted to the roll shaft 8 to rotate, and is grooved by the grooving claws 14 to form a seeding groove. Then, after the gel-coated seed 21 fed out by the feeding roll 20 falls into the seeding groove, the seeding groove 16 is covered with the soil covering plate 16, and the soil covering upper surface is pressed down by the pressure reducing roller 11. By so doing, the seeding operation by the seeder 1 is performed.

  In the present embodiment, the rotational force of the grounded front wheel 4 is used as the drive source of the seeding device 2, but an electric motor or the like may be used, and the drive system is not particularly limited.

Next, the structure of the sowing apparatus 2 will be described with reference to FIGS.
The seeding device 2 is fitted from the front of the feeding roll 20, an upper feeding case 17 having an upper hopper portion 17 a for storing the gel-coated seed 21, and a feeding case portion 17 b below the upper feeding case 17. And a lower feeding case 18 that houses the feeding roll 20.

  In the upper feeding case 17, the upper surface of the hopper portion 17 a is covered with the cover body 22, while the lower portion of the feeding case portion 17 b is opened so as to bisect the feeding roll 20 in an oblique manner. Has been. Further, the feeding case portion 17b is provided with a fitting recess 17b1 at the lower end of the joint surface with the lower feeding case 18, and the roll shaft 8 of the feeding roll 20 is inserted into the upper portion of the fitting recess 17b1. A shaft hole 17b2 is drilled.

  The lower feeding case 18 is provided with a support shaft 18b at its lower end so that the support shaft 18b can be fitted into the shaft hole 17b2. Further, a screw hole 18c is drilled in the upper end portion of the lower feeding case 18, and a screw hole 17a2 is drilled in the front wall 17a1 of the hopper portion 17a of the upper feeding case 17 coaxially with the screw hole 18c. The knob screw 23 can be screwed from the screw hole 18c to the screw hole 17a2.

  Thus, the roll shaft 8 is inserted into the feeding roll 20 from the shaft hole 17b2 in a state where the feeding roll 20 is fitted into the opening 17b3 of the feeding case section 17b, and the feeding roll 20 is moved by the feeding case section 17b. Pivot. Thereafter, the lower support case 18 is fastened and fixed to the upper supply case 17 by fitting the support shaft 18b into the engagement recess 17b1 and screwing the screw portion of the knob screw 23 into the screw holes 18c and 17a2. The

  Further, an engagement recess 18d is formed on the upper inner side of the lower feeding case 18, and the mounting portion 54c of the guide plate 24 can be inserted and fixed in the engagement recess 18d. Thereby, the guide plate 24 can be easily attached to and detached from the lower feeding case 18 without being screwed.

  Further, in the upper feeding case 17, a screw hole 17 a 3 is drilled on the front wall 17 a 1 of the hopper portion 17 a below the screw hole 17 a 2, and the screw portion 26 a of the thumb screw 26 is connected to the brush 25. The brush 25 can be fastened and fixed to the front wall 17a1 by passing through the base 25a and screwing it into the screw hole 17a3.

  In addition, the lower end of the front surface of the base portion 25a of the brush 25 is pressed toward the guide plate 24, and the brush portion 25b of the brush 25 extends from the base portion 25a toward the outer peripheral portion 20a of the feeding roll 20. The tip of the brush portion 25b is in contact with the outer peripheral portion 20a of the feeding roll 20.

  As a result, the gel-coated seeds 21 that have fallen into the plurality of roll holes 20b formed in a row in the circumferential direction on the outer peripheral portion 20a are moved to the brush 25 as the feeding roll 20 rotates in the direction of the arrow 27. When transported, most of the impurities such as soil and straw that are transported together with the gel-coated seed 21 are dammed by the brush portion 25b so that they cannot be transported any further.

  In the seeding device 1 having the above-described configuration, the rotating body 28 according to the present invention and the solution are respectively provided in the hopper 17a, in front of the feeding roll 20, and below the feeding roll 20. An application mechanism 29 and a biasing drop mechanism 30 are disposed.

Next, the rotator 28 will be described with reference to FIGS.
In the rotating body 28, a stirring shaft 31 parallel to the roll shaft 8 is horizontally mounted between the left and right side walls 17aL and 17aR of the hopper portion 17a so as to be able to rotate back and forth, and at the right end of the stirring shaft 31. A stirring sprocket 32 having the same number of teeth as that of the roll sprocket 9 fixed to the inside of the input sprocket 68 on the roll shaft 8 is fixed, and a chain is interposed between the stirring sprocket 32 and the roll sprocket 9. 33 is wound.

  Thereby, the rotational force of the front wheel 4 is transmitted from the roll shaft 8 to the stirring shaft 31 via the roll sprocket 9, the chain 33 and the stirring sprocket 32, and the stirring shaft 31 is synchronized with the feeding roll 20. Thus, it can be rotated in the direction of the arrow 37 in the same direction as the arrow 27.

  Further, a central portion of the plate thickness of the square plate-like rotating plate 34 is fitted on the stirring shaft 31, and a pair of stirring pins 35 and 36 are respectively attached to outer edge ends 34 a and 34 b in the radial direction of the rotating plate 34. Has been planted.

  The pair of stirring pins 35 includes two stirring pins 35L and 35R extending radially from the stirring shaft 31. The stirring pins 35L and 35R are parallel to each other in the axial direction of the stirring shaft 31. It is installed. Similarly, the pair of stirring pins 36 also includes two stirring pins 36L and 36R extending radially, and the stirring pins 36L and 36R are also arranged in parallel in the axial direction.

  Moreover, the agitation pin 35L and the agitation pin 36L, and the agitation pin 35R and the agitation pin 36R are all arranged on the same diameter line of the agitation shaft 31.

  As a result, the outer periphery of the agitation shaft 31 can be provided with the agitation pin pairs 35 and 36 at positions 180 degrees apart from each other in the circumferential direction. The rotating body 28 is composed of 36 and the like.

  Each of the stirring pins 35L, 35R, 36L, and 36R includes a rod-shaped main body portion 35La, 35Ra, 36La, and 36Ra and a head portion 35Lb, 35Rb, 36Lb, and 36Rb at the tip.

  The distance 38 between the heads 35Lb and 35Rb or between the heads 36Lb and 36Rb, which corresponds to the minimum distance between the stirring pins 35L and 35R or between the stirring pins 36L and 36R, is a seed diameter 21a of the gel-coated seed 21. It is set to be larger.

  Thereby, the gel-coated seed 21 can pass between the stirring pins 35L and 35R or between the stirring pins 36L and 36R.

  In addition, the interval 38 is smaller than or substantially equal to the diameter 40 of the hole 20b2 of the roll hole 20b, and the central portion between the stirring pins 35L and 35R and between the stirring pins 36L and 36R. The central part is set so as to be located in the rotation plane 41 substantially the same as the central part of the hole 20b2 of the roll hole 20b.

  Thus, the gel-coated seed 21 that has passed between the stirring pins 35L and 35R or between the stirring pins 36L and 36R does not roll out to the outer peripheral portion 20a other than the hole 20b2, and is accurately placed at the center of the hole 20b2. It can be dropped.

  Further, the gel-coated seed 21 gradually descends on the passage surface 17a5 on the inner side of the rear wall 17a4 of the hopper portion 17a. A gap interval 45 between the locus 44 is set to be smaller than the seed diameter 21a.

  As a result, the gel-coated seed 21 with the bridge generated enters the feed roll 20 side from the gap between the heads 35Lb, 35Rb, 36Lb, 36Rb and the passage surface 17a5 and drops into the roll hole 20b. Can be prevented in advance.

  In addition, the heads 35Lb, 35Rb, 36Lb, and 36Rb are formed in a hemispherical shape with the spherical surface facing outward, and the gel of the gel-coated seed 21 is rotated by the rotating stirring pins 35L, 35R, 36L, and 36R. The layer is not damaged.

  In the configuration as described above, when the feeding roll 20 rotates in the direction of the arrow 27, the stirring shaft 31 also rotates in the same direction, and the pair of stirring pins 35 and 36 separated from each other by 180 degrees in the circumferential direction are formed on the passage surface. The gel-coated seeds 21, 21... Descending on 17 a 5 are rotated in the facing direction indicated by the arrow 37 and stirred.

  Then, after the bridge generated between the gel-coated seeds 21, 21... Is scraped and eliminated by being picked up by the stirring pin pairs 35, 36, each gel-coated seed 21 is mixed with the stirring pins 35 L, 35 R. By passing between the two or between the stirring pins 36L and 36R while descending on the passage surface 17a5 as shown by the arrow 42, they are aligned in a line. Thereafter, the gel-coated seeds 21 are dropped one by one into the roll holes 20b that are successively exposed in front of the passage surface 17a5.

  At this time, since the stirring shaft 31 rotates in synchronization with the feeding roll 20 as described above, even if the traveling speed of the seeding machine 1 is changed and the feeding speed of the feeding roll 20 is increased or decreased, the stirring speed is interlocked with the feeding speed. Thus, the agitation / falling speed also changes, and this enables stable feeding of the gel-coated seeds 21 irrespective of the working speed of the sowing work.

Next, the solution application mechanism 29 will be described with reference to FIGS. 1, 3, 5, and 6.
First, the solution supply mechanism 43 that supplies the solution to the solution application mechanism 29 will be described.
As shown in FIGS. 1, 3, and 5, the solution supply mechanism 43 includes a solution tank 49 that stores the solution, and a two-way cock type that controls the flow rate of the solution from the solution tank 49. The flow rate adjusting valve 50, the first tube 51 in which the dissolved solution flows down from the dissolved solution tank 49 to the flow rate adjusting valve 50, and the second in which the dissolved solution flows down from the flow rate adjusting valve 50 to the seeding device 2. And the tube 52.

  Here, an L-shaped support frame 46 in a side view is fastened and fixed to the left main frame 3L between the axle 4a of the front wheel 4 and the handle 13 by front and rear bolts 47, and from the front end of the support frame 46 A long plate-like support bar 46a is erected, and the dissolution liquid tank 49 is sandwiched and supported by a sandwich arm 48 fixed to the upper end of the support bar 46a.

  The solution tank 49 is in the shape of a translucent bottle, and its mouth portion 49b is capped with a cap 58 and turned upside down, and has a diameter larger than the interval between the sandwiching portions 48a and 48b. And it is formed so as to be elastically deformable in the direction of diameter reduction. An air vent hole 49 a is opened on the upper surface after being turned upside down, and the hole 49 a is closed by a rubber plug 53.

  The sandwiching arm 48 has a U-shape in plan view opened rightward, and at least one of the front and rear sandwiching portions 48a and 48b is formed to be elastically deformable outward in the front-rear direction which is the sandwiching release direction. .

  Thereby, after at least one of the sandwiching portions 48a and 48b is pushed open to the outside in the front-rear direction, the dissolution liquid tank 49 is inserted into and removed from the sandwiching arm 48 from the right side, so that the dissolution tank 49 can be easily attached and detached. Then, the solution can be replenished quickly after removing the cap 58 after turning upside down.

  And since the dissolution liquid tank 49 currently attached to the tank is firmly held by the elastic force of both the dissolution liquid tank 49 and the holding portions 48a and 48b, it is not easily displaced even if the seeding machine 1 vibrates. In particular, the upper and lower portions of the portion sandwiched between the sandwiching portions 48a and 48b are maintained at the original large diameter without being reduced in diameter, and the solution tank 49 is almost displaced due to vertical vibration. There is nothing.

  Further, the lysing solution tank 49 is disposed in front of and above the seeding device 2, thereby pushing the seeder 1 forward while grasping the handle 19 behind the seeding device 2. When the seeding operation is performed, the operator can visually check the remaining solution in the solution tank 49 without disturbing the line of sight by the seeding device 2, and frequently performs the operation to check the remaining amount. There is no need to cancel and work efficiency can be improved.

  In addition, unlike the case where the solution tank 49 is disposed on the handle 19 side behind the seeding device 2, the tube 52 from the solution tank 49 is straightened without being bent from the front portion of the seeding device 2. It can be introduced, piping can be performed easily, and the operation of the handle 19 is not obstructed by the arranged tubes 51 and 52 and the like.

  In addition, the solution tank 49 is arranged at the left and right center of the left and right main frames 3L and 3R, can improve the left and right weight balance, and can place the center of gravity of the seeder 1 at the center of the width. It is possible to reduce the burden on the worker during work.

  The flow rate adjusting valve 50 is configured by providing a two-way cock 50a with a scale plate 50b for displaying the cock opening degree. The inlet of the two-way cock 50a is communicated with the mouth portion 49b of the solution tank 49 via the first tube 51, and the outlet of the two-way cock 50a is seeded via the second tube 52. It communicates with a solution application mechanism 29 in the apparatus 2.

  Thereby, the opening degree of the two-way cock 50a is adjusted with the scale plate 50b as a guide according to the working speed of the seeding work, and the first tube 51 and the flow rate adjustment valve are supplied from the solution tank 49 to the solution at an appropriate flow rate. 50, and can be supplied to the solution application mechanism 29 via the second tube 52.

Further, as shown in FIGS. 3 and 6, a solution applying mechanism 29 for applying the solution from the solution supplying mechanism 43 to the gel-coated seed 21 will be described.
The solution application mechanism 29 inserts and holds the tip portion 52a of the second tube 52 in the gap 56 between the guide plate 24 and the brush 25, and the solution flowing out of the gap 56, It is applied to the gel-coated seed 21 using the guide plate 24.

  The guide plate 24 is composed of a spring plate 54 having elasticity and a fabric 55 adhered to the rear surface of the spring plate 54, and the spring plate 54 of the guide plate 24 extends along the outer peripheral portion 20 a of the feeding roll 20. From the arcuate guide portion 54a disposed so as to cover the front half, the flat plate-like support portion 54b extending obliquely upward from the upper end of the guide portion 54a, and the upper end of the support portion 54b. It is comprised from the said attaching part 54c extended in the front diagonally downward.

  Then, from the portion of the mounting portion 54c excluding the portion inserted into the engaging recess 18d of the lower feeding case 18, the rear surface of the spring plate 54 extending over the support portion 54b and the guide portion 54a is covered, The fabric 55 is adhered.

  In addition, in the state where the spring plate 54 is compressed forward, the feeding roll 20 is installed immediately after the spring plate 54, and the fabric 55 is fed backward by the elastic force of the spring plate 54. The roll 20 is constantly urged toward the outer peripheral portion 20a.

  The feeding roll 20 that is rotating in the direction of the arrow 27 with respect to such a guide plate 24 is a bent portion (hereinafter referred to as “guide plate start end portion”) 24a from the guide portion 54a to the support portion 54b. Under the guide plate 24 starts to be submerged, and is exposed to the outside from the guide plate 24 at a lower end portion (hereinafter referred to as “guide plate end portion”) 24b of the guide portion 54a.

  And the front-end | tip of the brush part 25b of the said brush 25 contacts the outer peripheral part 20a just before this guide plate start end part 24a, the lower end 25a1 of the base 25a of this brush 25, and the cloth near the said guide plate start end part 24a The tip portion 52a of the second tube 52 is inserted and held in the gap 56 between the second tube 52 and the second tube 52. The tip 52a is inserted into the seeding device 2 through the protective tube 57 attached to the front wall opening 18e of the lower feeding case 18, and the protective tube 57 causes vibration of the second tube 52 or the like. Prevents damage.

  As a result, the solution flowing out from the tip 52 a of the second tube 52 enters the brush portion 25 b from the gap 56 and enters between the outer peripheral portion 20 a of the feeding roll 20 and the cloth 55 of the guide plate 24. Then, it is supplied to the gel-coated seed 21 in the roll hole 20b from which impurities such as soil and cocoons have already been removed by the brush portion 25b.

  Further, the solution that has been transmitted to the fabric 55 in this way penetrates into the fabric 55, and the entire fabric 55 is in a wet state in which the solution is adsorbed. It is always urged toward the outer peripheral portion 20a of the rear feeding roll 20.

  And since the said roll hole 20b is comprised so that at least one part of the fallen gel coating seed 21 may protrude outward from the outer peripheral part 20a of the delivery roll 20, during the delivery roll 20 rotation, the said fabric 55, the protruding portion is pressed so that the gel-coated seed 21 is strongly pushed into the roll hole 20b, and the friction force between the fabric 55 and the gel-coated surface of the gel-coated seed 21 at this time The gel-coated seed 21 rotates in the roll hole 20b.

  As a result, when the fabric 55 comes into contact with the gel-coated seed 21 in the roll hole 20b of the feeding roll 20, the solution is applied to the gel-coated seed 21 at the same time as rubbing accompanying the contact. Moreover, in a state where the protruding portion of the gel-coated seed 21 is pressed by the cloth 55, the gel-coated seed 21 is applied with the solution many times by the cloth 55 while rotating in the roll hole 20b.

  In the gap 56, the second tube 52 has a tip opening 52b at the tip 52a. The distal end opening 52b includes an oblique opening 52b1 that is cut obliquely with respect to the longitudinal direction, and a slit 52b2 that is cut from the inner cut end of the oblique opening 52b1 toward the tube body.

  Then, the elastic force of the spring plate 54 causes the cloth 55 of the guide plate 24 to press the tip portion 52 a toward the lower end 25 a 1 of the base portion 25 a of the brush 25, so that the tip opening 52 b is a gap 56. It is made to be pinched in.

  As a result, the oblique opening 52b1 and the slit 52b2 can be connected in the longitudinal direction to form a long tip opening 52b, and even if the clamping position is slightly shifted in the longitudinal direction, only a partial crimping is performed. The tip opening 52b is not completely blocked.

  In addition, since the oblique opening 52b1 and the slit 52b2 have different shapes, the tip opening 52b is deformed unevenly even when sandwiched, and a local opening can be secured. For example, even if the oblique opening 52b1 is completely pressure-bonded, the slit 52b2 is deformed so as to spread in the lateral direction, and a part of the slit 52b1 is opened, so that the solution can flow out from the opening.

Next, the urging and dropping mechanism 30 will be described with reference to FIGS. 2 to 4 and 7.
In the urging / falling mechanism 30, a plate-shaped scraper 59 is disposed in the vicinity of the guide plate end portion 24 b, and a slit groove 20 c into which the tip end portion 59 b of the scraper 59 is inserted has a shaft of the feeding roll 20. It is formed in an annular shape around the entire circumference.

  Of these, the scraper 59 has a base end portion 59a that is mounted on a bolt 60 that is horizontally disposed between the left and right side walls 18L and 18R of the lower feeding case 18 substantially below the roll shaft 8 so as to be pivotable back and forth. It is fitted and fixed.

  The bolt 60 is inserted from the left into the left and right elongated holes 18La and 18Ra opened in the front-rear direction at the lower part of the side walls 18L and 18R, and protrudes from the right side wall 18R. 61 is screwed.

  Further, the left and right side walls 18L and 18R of the bolt 60 have shaft portions 60a sandwiched between right and left fixed collars 62L and 62R having substantially the same shape, and a shaft portion between the fixed collars 62L and 62R. A shaft hole 59a1 drilled in the base end portion 59a of the scraper 59 is fitted on the 60a.

  Accordingly, when the scraper 59 is fixed, the bolt 60 is rotated in the fastening direction to bring the left and right side walls 18L and 18R closer to each other, and the base end portion 59a of the scraper 59 is sandwiched and fixed between the fixed collars 62L and 62R. . When the base end portion 59a of the scraper 59 is moved back and forth along the long holes 18La and 18Ra, or when the base end portion 59a is rotated back and forth around the shaft portion 60a, the bolt 60 is turned in the release direction and the left and right side walls are reversed. 18L and 18R are separated from each other, and gaps are provided between the fixed collars 62L and 62R, between the fixed collar 62L and the side wall 18L, and between the fixed collar 62R and the side wall 18R.

  The slit groove 20c is formed by further cutting the hole bottom 20b1 of the roll hole 20b inward in the radial direction, and a scraper 59 rotated upward around the bolt 60 in the slit groove 20c. The front end portion 59b is inserted, the front end portion 59b is brought into contact with the groove bottom 20c1, and the bolt 60 is rotated in the fastening direction as described above to fix the scraper 59.

  The scraper 59 is positioned so as to face the guide plate end portion 24b so that the front edge portion 59c on the guide plate end portion 24b side is inclined forward and obliquely upward with respect to the guide plate end portion 24b. Yes.

  Thereby, when the feeding roll 20 rotates in the direction of the arrow 27, the gel-coated seed 21 to which the solution is sufficiently applied in the roll hole 20b as described above is fed backward from the guide plate terminal portion 24b. Then, it collides with the front edge part 59c of the scraper 59 at an angle, and the gel-coated seed 21 drops vigorously downward due to the elastic force of the gel layer.

  Further, the depth 64 of the slit groove 20c is set so as to increase when the depth 63 of the roll hole 20b becomes deep and to decrease when the depth 63 of the roll hole 20b becomes shallow.

  For example, as shown in FIG. 7, when the depth 63 of the roll hole 20b is increased as 63a → 63b → 63c, the depth 64 of the slit groove 20c is also increased as 64a → 64b → 64c. Thus, the support depth 65 from the groove bottom 20c1 to the hole bottom 20b1 can be kept substantially constant.

  At this time, when the depth 64 of the slit groove 20c is increased, the tip end portion 59b that is in contact with and supported by the groove bottom 20c1 of the slit groove 20c is also raised, and the collision location 59c1 where the gel-coated seed 21 collides with the front edge portion 59c. Thus, the feeding gap 66 from the guide plate terminal portion 24b to the guide plate terminal end 24b can be increased as 66a → 66b → 66c.

  As a result, when the roll diameter of the feeding roll 20 is constant, the support depth 65 is kept substantially constant even when the particle diameter of the gel-coated seed 21 is increased and the hole bottom 20b1 of the roll hole 20b is deepened. The feeding gap 66 can be adjusted according to the particle size of the coated seed 21.

  That is, in the above configuration, the outer peripheral portion 20a has a hopper portion 17a that is a seed hopper that accommodates the gel-coated seed 21 and a roll hole 20b into which the gel-coated seed 21 falls from the hopper portion 17a. In the seeding device 2 provided with a feeding roll 20 that is rotated by a roll shaft 8 and an arcuate guide plate 24 that is arranged close to the outer peripheral part 20a, the gel coating is carried out while rotating in the hopper part 17a. A rotating body 28 that aligns the seeds 21 one by one and guides them to the roll hole 20b, and the guide plate 24 and the outer periphery in the vicinity of the guide plate starting end portion 24a where the feeding roll 20 starts to sink under the guide plate 24. The gel layer solution is supplied between the portion 20a and the gel solution in the roll hole 20b. A solution coating mechanism 29 for applying to the child 21 is provided, and in the vicinity of the guide plate terminal portion 24b where the feeding roll 20 comes out from under the guide plate 24, the gel coating held and transferred in the roll hole 20b is provided. Since the urging / falling mechanism 30 for urging and dropping the seeds 21 is provided, the rotator 28 stirs the gel-coated seeds 21 in the hopper 17a to eliminate the bridge, and surely one by one. The solution can be dropped into the roll hole 20b, and the solution application mechanism 29 supplies the solution after dropping into the roll hole 20b to minimize the occurrence of bridging in the hopper portion 17a. Thus, clogging by the bridge can be surely avoided. Further, the urging / falling mechanism 30 causes the gel-coated seed 21 fed out from the feeding roll 20 to drop vigorously toward the bottom of the sowing groove, so that the gel-coated seed 21 adheres to the inner wall surface of the feeding portion or sowing. It is possible to prevent rolling in the groove and stopping on the way to the bottom of the seeding groove. Therefore, it is possible to sow the gel-coated seeds 21 one by one at a constant interval and with a certain depth with high accuracy, and sowing accuracy can be greatly improved. The rotating body 28, the solution applying mechanism 29, and the urging / falling mechanism 30 are all easily incorporated into the roll type seeding device 2 including the hopper portion 17a, the feeding roll 20, and the guide plate 24. In addition, it is possible to reduce the cost of the apparatus because a large design change is not required, and the operability of the seeder 1 incorporating the seeder 2 can be improved by reducing the size and weight of the seeder 2.

  Further, the urging / falling mechanism 30 is formed in an annular shape in the feed roll 20 over the entire circumference around the axis of the roll shaft 8 and a plate-shaped scraper 59 disposed in the vicinity of the guide plate terminal portion 24b. The slit groove 20c is formed by cutting radially inward from the hole bottom 20b1 of the roll hole 20b, and the tip 59b of the scraper 59 is inserted into the slit groove 20c. The scraper 59 so that the front edge portion 59c, which is the edge portion on the guide plate end portion 24b side, is inclined obliquely upward with respect to the guide plate end portion 24b. 59 is disposed opposite to the guide plate end portion 24b, so that the gel-coated seed 21 fed out from the guide plate end portion 24b is Colliding obliquely with the front edge 59c of the scraper 59 supported by the lit groove 20c and causing the gel-coated seed 21 to be urged and dropped downward by a collision reaction force increased by the elastic force of the gel layer at that time. Can do. As a result, the gel-coated seed 21 is reliably dropped to the bottom of the seeding groove without unnecessarily rolling, so that seeding to a constant depth at a constant interval can be performed more accurately, and a scraper is provided near the guide plate end portion 24b. The urging and dropping can be performed with a simple structure in which only 59 is arranged, so that the apparatus cost can be further reduced, and the seeding apparatus can be reduced in size and weight. Furthermore, since the gel-coated seed 21 is caused to collide with the front edge portion 59c having a small collision surface, it is possible to increase the local impact of the gel-coated seed 21 while preventing the gel-coated seed 21 from adhering to the scraper 59. Thereby, the delay of the fall time of the gel-coated seed 21 can be reduced, and seeding at a constant interval can be performed more accurately. In addition, since the scraper 59 is disposed to face the guide plate end portion 24b so that the front edge portion 59c is inclined obliquely upward with respect to the guide plate end portion 24b, the base end portion 59a of the scraper 59 is in the middle of dropping. The gel-coated seed 21 can be dropped as it is without contacting it, and dropped at a uniform dropping speed, so that the sowing accuracy can be further improved.

  In addition, the depth of the groove bottom 20c1 increases and decreases following the depth of the hole bottom 20b1 of the roll hole 20b, and the scraper 59 is configured to be rotatable about the base end portion 59a. For example, even if the roll diameter of the feeding roll 20 remains constant and the particle diameter of the gel-coated seed 21 increases and the hole bottom 20b1 of the roll hole 20b becomes deep, the groove bottom 20c1 of the slit groove 20c also becomes deep, The support depth 65 can be kept substantially constant, and the tip portion 59b of the scraper 59 can be reliably inserted and supported in the slit groove 20c. At this time, the scraper 59 has its distal end portion 59b pivoted upward around its base end portion 59a, and is inserted into the slit groove 20c so as to be in contact with and supported by the groove bottom 20c1. When the groove bottom 20c1 of the slit groove 20c becomes deeper, the scraper 59 also rises upward, and the feeding gap 66, which is the horizontal distance from the collision location 59c1 to the guide plate end portion 24b, is expanded. Thereby, even if the particle diameter of the gel-coated seed 21 is changed, the position and posture of the common scraper 59 are adjusted after replacing the roll 20b and the feeding roll 20 having the slit groove 20c according to the particle diameter. The scraper 59 can be reliably inserted and supported in the slit groove 20c, and the feeding gap 66 can be made appropriate as 66a, 66b, 66c according to the particle diameter of the gel-coated seed 21, and further. It is possible to reduce the device cost and to reduce the size and weight of the seeding device.

  Then, the solution application mechanism 29 includes a tip 52a of the second tube 52, which is a tube from the solution tank 49 for storing the solution, a cloth 55 in the vicinity of the guide plate start end portion 24a, and the guide plate. The cloth is sandwiched between the outer peripheral portion 20a immediately before the start end portion 24a and the base portion 25a of the brush 25 that contacts the brush portion 25b, and the solution from the gap 56 is the inner peripheral portion of the guide plate 24. 55, the gel-coated seed 21 of the roll hole 20b is brought into contact with the cloth 55 and the solution is applied. Therefore, the solution flowing out from the second tube 52 is allowed to flow through the brush portion 25b, such as soil or straw. It can be supplied to the gel-coated seed 21 in the roll hole 20b after removing the impurities, and the gel layer surface of the gel-coated seed 21 is covered with the impurities during application. Without gel layer dissolution progresses uniformly uncoated surface of the dissolution liquid in the gel layer surface is reduced. Further, the tip portion 52a of the second tube 52 can be supported using the gap 56 between the guide plate 24 and the brush 25, which is an existing component, so that it is not necessary to mount a separate support component and the number of components is small. The cost of parts can be reduced, and maintenance can be improved. In addition, since the solution is applied to the gel-coated seed 21 while the surface of the gel layer is mechanically scratched by the cloth 55 of the guide plate 24, the gel is compared with the case where the solution is simply sprayed onto the gel-coated seed 21. Layer dissolution is promoted, and the germination rate can be greatly improved in combination with the uniform gel layer dissolution.

  Further, the tip 52a of the second tube 52, which is the tube, has an oblique opening 52b1 cut obliquely with respect to the longitudinal direction, and the longitudinal direction from the inner cut end of the oblique opening 52b1 toward the tube body side. Since the front end opening 52b is formed of the slit 52b2 cut into the slit, the slanted opening 52b1 and the slit 52b2 are connected in the longitudinal direction so that a long opening is secured at the tip 52a of the second tube 52. In addition, the slits 52b2 and the oblique openings 52b1 which are openings having different shapes can be combined to make the deformation of the tip 52a of the second tube 52 non-uniform, and the tip 52a of the second tube 52 can be made nonuniform. Even if the gap 56 is strongly clamped and pressure-bonded in the gap 56, at least a part of the tip opening 52 b is opened, and the dissolved liquid is surely discharged from the gap 56. Rukoto can.

  In addition, the roll hole 20b is formed so that at least a part of the gel-coated seed 21 protrudes outward from the outer peripheral portion 20a, and the guide plate 24 is an inner peripheral portion of the guide plate 24. Since the fabric 55 is constantly biased toward the outer peripheral portion 20a of the feeding roll 20, the gel-coated seed 21 is rolled into the roll hole by the fabric 55 of the guide plate 24 in the biased state during the rotation of the feeding roll 20. 20b, the gel-coated seed 21 can be rotated in the roll hole 20b by the frictional force between the cloth 55 of the guide plate 24 and the gel layer surface of the gel-coated seed 21. Thus, the solution is applied to the gel-coated seed 21 many times, so that the gel layer dissolution is further promoted and the germination rate can be further improved.

  The rotating body 28 includes a stirring shaft 31 that rotates in conjunction with the roll shaft 8 and two stirring pins 35L and 35R and 36L and 36R that extend radially from the stirring shaft 31 in the axial direction. A pair of stirring pins 35 and 36 is provided, and the pair of stirring pins 35 and 36 is indicated by an arrow 37 which is a direction opposite to the downward direction of the gel-coated seed 21 from the hopper portion 17a which is the seed hopper. The gap 38, which is the minimum gap between the two stirring pins 35L and 35R and between the two stirring pins 36L and 36R, is larger than the seed diameter 21a of the gel-coated seed 21 and the roll hole 20b. The diameter of the hole 20b2 is smaller than or substantially the same as the diameter 40, and the central part between the two agitation pins 35L and 35R and between the two agitation pins 36L and 36R is the hole 20b2 of the roll hole 20b. Set in substantially the same rotation plane 41 as the central portion, and a clearance distance between the rotation locus 44 of the tip of the stirring pins 35L, 35R, 36L, and 36R and the passage surface 17a5 where the gel-coated seed 21 descends 45 is set smaller than the seed diameter 21a, so that the gel-coated seeds 21 are separated one by one after the gel-coated seeds 21 are lifted by the rotation of the stirring pin pairs 35 and 36 to break the bridge. The two agitating pins 35L and 35R and between the agitating pins 36L and 36R can be aligned in a row, and can be dropped into the center of the hole 20b2 of the roll hole 20b, and rotate into the hopper 17a. The bridge can be eliminated with a simple structure in which the body 28 is simply arranged, and the device cost can be further reduced and the seeding device can be reduced in size and weight.

  The present invention includes a seed hopper that accommodates a gel-coated seed, a roll having a roll hole into which the gel-coated seed from the seed hopper falls, and a feed roll that rotates by a substantially horizontal roll shaft, and along the outer periphery. It can be applied to all seeding devices having arcuate guide plates arranged in close proximity to each other.

2 Seeding equipment 8 Roll shaft 17a Hopper part (seed hopper)
17a5 Passage surface 20 Feeding roll 20a Outer part 20b Roll hole 20b1 Hole bottom 20b2 Hole 20c Slit groove 20c1 Groove bottom 21 Gel-coated seed 21a Seed diameter 24 Guide plate 24a Guide plate start end 24b Guide plate end 25 Brush 25a Base 25b Brush 25a 28 Rotating body 29 Solution application mechanism 30 Biasing drop mechanism 31 Stirring shaft 35/36 Stirring pin pair 35L / 35R / 36L / 36R Stirring pin 38 Interval (minimum interval)
40 Diameter 41 Rotating plane 44 Rotating locus 45 Gap spacing 49 Dissolving liquid tank 52 Second tube (tube)
52a tip 52b tip opening 52b1 oblique opening 52b2 slit 55 cloth (inner circumference)
56 Clearance 59 Scraper 59a Base end 59b Tip 59c Front edge (edge)

Claims (7)

  A seed hopper for accommodating the gel-coated seed, a roll having a roll hole into which the gel-coated seed from the seed hopper falls, and a feeding roll that is rotated by a substantially horizontal roll shaft, and is disposed close to the outer periphery. A rotating body that guides the gel-coated seeds one by one to the roll hole while rotating in the seed hopper, and the feeding roll is under the guide plate A solution for supplying a gel layer solution toward the gap between the guide plate and the outer periphery, and applying the solution to the gel-coated seeds in the roll hole, in the vicinity of the guide plate start end where the submergence starts. And an application mechanism, and in the vicinity of the end portion of the guide plate where the feed roll comes out from under the guide plate, the roll is held and transferred in the roll hole. Providing the biasing dropping mechanism for dropping the by has a gel-coated seed urged to seeding device according to claim.   The biasing and dropping mechanism includes a plate-shaped scraper disposed in the vicinity of the guide plate end portion, and a slit groove formed in an annular shape in the feeding roll over the entire circumference around the axis of the roll shaft, The slit groove is formed by cutting radially inward from the bottom of the roll hole, and the tip of the scraper is inserted into the slit groove and brought into contact with the groove bottom. 2. The seeding device according to claim 1, wherein the scraper is disposed to face the guide plate end portion so that an end portion side edge portion is inclined obliquely upward with respect to the guide plate end portion.   The depth of the groove bottom increases or decreases following the depth of the bottom of the roll hole, and the scraper is configured to be rotatable about a base end portion. The seeding device as described.   The solution applying mechanism includes a brush that contacts a brush portion with a tip portion of a tube from a solution tank storing the solution, in the vicinity of the guide plate start end portion and an outer peripheral portion immediately before the guide plate start end portion. The solution is sandwiched between the gaps, and the solution from the gap is adsorbed to the inner periphery of the guide plate, and the solution is applied by bringing the gel-coated seeds of the roll holes into contact with the inner periphery. The seeding device according to any one of claims 1 to 3.   The distal end of the tube includes an oblique opening cut obliquely with respect to the longitudinal direction, and a slit portion cut in the longitudinal direction from the inner cut end of the oblique opening toward the tube body side. The seeding device according to claim 4, wherein an opening is formed.   The roll hole is formed so that at least a part of the gel-coated seed protrudes outward from the outer peripheral portion, and the guide plate has an inner peripheral portion of the guide plate facing an outer peripheral portion of the feeding roll. The seeding device according to claim 4 or 5, wherein the seeding device is configured to be constantly energized.   The rotating body includes an agitation shaft that rotates in conjunction with the roll shaft, and an agitation pin pair in which two agitation pins radially extending from the agitation shaft are arranged in the axial direction. The pin pair is rotated in a direction opposite to the downward direction of the gel-coated seed from the seed hopper, and the minimum distance between the two stirring pins is larger than the seed diameter of the gel-coated seed, and the roll hole It is set to be smaller than or substantially the same diameter as the diameter of the hole, and the central part between the two stirring pins is set in the same rotational plane as the central part of the hole of the roll hole, The clearance gap between a rotation locus | trajectory and the channel | path surface where the said gel-coated seed descend | falls is set smaller than the said seed diameter, The Claim 1 characterized by the above-mentioned. Seeding equipment.

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