JPH0767330B2 - Seed feeding device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a seed feeding device for a seedling raising machine.

(Prior Art) Conventionally, as a seedling raising seeding machine, there is one shown in FIG.
The seeding machine has a hopper 28 and a feeding roll 29 arranged above the nursery box transfer mechanism 2, and a rotary brush 30 for adjusting the amount of seeds to be fed into the feeding groove 58 above the feeding roll 29. Between the lower opening 31 of 28 and the feeding roll 29, a guide path 32 for guiding seeds such as germinated paddy to the feeding groove 58 is formed, and by the rotation of the feeding roll 29, seedlings during transfer of seeds. It is configured to feed a fixed amount to the box 1.

(Problems to be Solved by the Invention) In the above conventional device, the feeding roll 29 is rotated in the direction of the arrow in FIG. 4, and the seeds are scooped by the feeding groove 58, so that the seed is placed in the feeding groove 58. The seeding optimum amount is measured by putting the seeds into the feeding groove 58.In this case, if the seeds that enter the feeding groove 58 are few, it is not possible to secure a uniform seeding amount. Therefore, the amount of seeds dropped and supplied from the lower opening 31 of the hopper 28 is set to be slightly larger than the required amount, and the feeding roll between the rotary brush 30 and the guide path 32 is provided. The seeds are retained on the 29 in a layered manner, and the excess seeds are removed by the rotating brush 30 which rotates in the same direction as the feeding roll 29, so that the seed supply amount into the feeding groove 58 does not decrease. I have to.

However, in the conventional type, the rotating brush 30 and the guideway are
Since there is nothing between it and 32, the lower opening 31 of the hopper 28
The seeds steadily flow out from the feeding roll 29 and excessively stay on the feeding roll 29. Therefore, the seeds that accompany the rotary brush 30 and the seeds sandwiched in the rotary brush 30 are forward of the upper portion of the feeding roll 29 in the rotation direction (the fourth side). In the figure, it is supplied to the right side of the rotary brush 30, and there is a problem that seeds are excessively supplied into the feeding groove 58 even though the optimum amount of seeding is adjusted by the rotary brush 30.

Therefore, in view of the above problems, the present invention prevents the seeds from being excessively supplied on the feeding roll between the rotating brush and the guide path, and the seeds sandwiched in the rotating brush are on the upper portion of the feeding roll. It is intended to prevent the supply to the front side in the rotation direction.

(Means for Solving Problems) The present invention has been made to solve the above problems, and the specific configuration of the problem solving means is that the nursery box 1 is transferred above the nursery box transfer mechanism 2. A feeding roll 29 rotatable about the axis transverse to the direction is provided, and above the feeding roll 29, rotation for rotating in the same direction as the feeding roll 29 in order to adjust the amount of seeds entering the feeding groove 58. A brush 30 is provided, on the rear side in the rotational direction of the upper side of the feeding roll 29, to the feeding roll 29 to guide the seeds into the feeding groove 58 of the feeding roll 29 from the lower opening 31 of the hopper 28 located on the upper side of the feeding roll 29. In the seed feeding device provided with a guide path 32 formed in a downwardly inclined shape as it goes, between the rotary brush 30 and the guide path 32, one end is in sliding contact with the rotary brush 30 and the other end is in the guide path 32. Closed shoot 66
Is provided so as to be inclined so that the side of the guide path 32 becomes low and has a space in which seeds can be retained between itself and the feeding roll 29.

(Operation) The seeds that have flowed into the feeding groove 58 of the feeding roll 29 are adjusted to a set amount by the rotating brush 30 that rotates in the same direction as the feeding roll 29, and the optimum amount is fed from the feeding groove 58, and the seedling raising box 1 Fall on. On the other hand, the seed sandwiched between the rotating brushes 30, when the rotating brush 30 slides on the edge of the chute 66, the seeds spring up due to the spring action of the bristles and fall onto the chute 66, and the seeds on the chute 66 slip off. Guided into the guideway 32. In addition, the chute 66 is a rotating brush 30.
Between the guide path 32 and the guide path 32, one end of the chute 66 is slidably contacted with the rotating brush 30 and the other end is close to the guide path 32. Seeds are restricted and seeds are overwhelmed 29
Since the seeds do not stay on top and are always supplied on the feeding roll 29 in a constant amount, and the accumulated amount of extra seeds on the feeding roll 29 does not increase, the rotating brush 30 ensures the adjustment, Only the optimum amount of powder is delivered.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to Figs.

FIG. 3 shows seedling raising seeding equipment. This seeding equipment is roughly classified into a transfer mechanism 2 for placing and transporting the seedling raising box 1,
A supporting frame 3 of the transfer mechanism 2 and a floor earthing machine 5 placed on the supporting frame 3 and straddling a nursery box transfer passage 4 of the transfer mechanism 2,
Rotary brush device 6, watering device 7, seeder 8 and soil cover 9
It consists of

The support frame 3 has a pair of left and right parallel frames 10 and a plurality of support legs 11.

The transfer mechanism 2 is composed of a plurality of rollers 12 pivotally supported on the frame 10 at intervals, a sprocket 14, a chain 15, a roller shaft 16 and the like for transmitting power from a motor 13 described later to all the rollers 12.

The floor earthmoving machine 5 includes a belt conveyor 17 parallel to the transfer passage 4,
It has a hopper 18 above it and a belt conveyor 17
Is powered from the transfer mechanism 2 by the chain transmission means 19,
It is configured to supply the bed soil into the nursery box 1 in synchronization with the movement.

20 is a gate member, and the opening edge of the hopper 18 and the belt conveyor 17
The amount of floor soil to be supplied is adjusted by adjusting the size of the soil discharge port 21 formed between and.

The rotating brush device 6 is located in front of the bed soil moving machine 5 in the transfer direction of the nursery box and removes excess soil so that the top surface of the bed soil placed in the nursery box 1 is leveled to a predetermined amount. Both shaft ends of a rotary brush 23 are pivotally supported by a frame body 22 provided on the frame 10 of the support frame 3, and the rotary brush 23 receives power from the roller shaft 16 by a chain transmission means 24 or the like. Is configured.

The irrigation device 7 has a water sprinkling plate 26 swingably and pivotally supported below a water supply pipe 25 communicating with a water pipe, so that a predetermined amount of water is sprinkled substantially evenly on the soil in the nursery box 1. It has become.

The seeding machine 8 mainly includes a support frame 27 on both left and right sides fixed to the frame 10, a hopper 28 detachably arranged on the support frame 27, and a feeding roll 29 pivotally supported between the support frames 27 and The rotating brush 30, a guide path 32 arranged between the lower opening 31 of the hopper 28 and the feeding roll 29, for guiding seeds to the feeding roll 29, the motor 13 and the transmission mechanism.
It is composed of 33 and.

The soil cover machine 9 has the same structure as the floor soil machine 5, drives the belt conveyor 35 from the transfer mechanism 2 via the chain transmission means 34, and removes the soil in the hopper 36 through the soil discharge port 37 to the seeds in the nursery box 1. It is configured to be sprayed on and covered with soil.

The specific configuration of the seeding machine 8 is shown in FIGS. 1 and 2, and the powder and granular material feeding device according to the present invention is adopted.

The frame 10 is formed of a U-shaped member in cross section, and is connected to each other at a plurality of positions. A large number of the roller shafts 16 are supported at equal intervals in the longitudinal direction, and each roller shaft 16 is located inside the frame 10. Two rollers 12 are provided respectively, and one sprocket 14 is located in the frame 10 and one is attached to each shaft end. A driven gear 38 is attached to an end of the roller shaft 16 near the seeder 8 on the opposite side of the sprocket 14, and a transmission gear 39 meshed with the driven gear 38.
Is attached to a rotary shaft 40 that is hung parallel to the roller shaft 16, and a transmission sprocket 41 is attached to the outer end of the rotary shaft 40.The transmission sprocket 41 is connected to the motor via chain transmission means 42 and the like. The driving force from 13 is transmitted, and these constitute a transfer mechanism 2 for moving the nursery box 1 placed on the roller 12 in a direction indicated by an arrow A at a constant speed.

The support frame 27 is composed of a pair of left and right plates, and a flange portion 43 provided at the lower end of the support frame 27 is placed on the frame 10 and is detachably attached by a bolt (not shown). The hopper 28 is placed on a hopper support member 44 fixed to the upper facing surfaces of the left and right support frames 27, and is detachably attached by a thumbscrew 45 or the like.
Further, on the support frame 27, the roll shaft 46 of the feeding roll 29, the rotary shaft 47 of the rotary brush 30, the transmission mechanism 33.
Of the intermediate gear shaft 48 is rotatably supported via bearings 49, 50, 51, respectively, and transmission gears 52, 53, 54 meshing with each other are fixed to one end of each shaft 46, 47, 48. .

An intermediate sprocket 55 that transmits power to the moving mechanism 2 is fixed to an end of the intermediate gear shaft 48, and power is transmitted from the intermediate sprocket 55 to the transmission sprocket 41 via the chain transmission means 42. . A drive gear 57 mounted on the reduction gear output shaft 56 of the motor 13 is meshed with the transmission gear 54 fixed to the intermediate gear shaft 48.

The pay-out roll 29 has a large number of pay-out grooves 58 on the outer circumference, enables row seeding and loose seeding, and has a hollow inside.

The guide path 32 formed between the feeding roll 29 and the lower opening 31 of the hopper 28 is formed by a guide plate 59 and the left and right support frames 27.

The guide plate 59 has a horizontal mounting rod 60 fixed to the upper end thereof, and the mounting rod 60 is passed through the left and right support frames 27 to be supported, and an inclined wall 59A crossing below the lower opening 31 of the hopper.
And a horizontal wall 59B extending horizontally in the opposite direction from the lower end of the inclined wall 59A, and bracket portions 61 formed at the left and right ends of the horizontal wall 59B are the support frames.
It is attached to 27 via bolts 62 so that the inclination angle can be adjusted. Further, on the lower surface of the horizontal wall 59B, a seed receiving brush 63 whose tip is in sliding contact with the feeding roll 29 is attached over the entire width.

As shown in FIG. 1, the bearing 50 of the rotary shaft 47 of the rotary brush 30 is mounted by a bolt 65 via a bearing mounting plate 64 so that the vertical position can be adjusted.
By adjusting the vertical position of 30
In contrast, the rotary brush 30 moves back and forth, and the amount of overlap during sliding is adjusted.

That is, when the rotary brush 30 is advanced to the payout roll 29 side, the length of the bristles of the brush that enters the payout groove 58 becomes long, more seeds in the groove 58 are discharged, and the seed payout amount is reduced, Conversely, when the rotary brush 30 is retracted, the seed feeding amount is increased.

66 is a chute between the lower opening 31 of the hopper 28 and the feeding roll 29, so that one upper end is in sliding contact with the rotary brush 30 and the other lower end is exposed in the guide path 32. A flange portion 66A is attached to the support frame 27 so that the shoot inclination angle can be adjusted, and a space 67 is formed between the support frame 27 and the lower delivery roll 29. Therefore,
Seeds that have fallen from the lower opening 31 of the hopper 28 are
It slides down on the inclined wall 59A of 59 and enters the feeding groove 58 of the rotating feeding roll 29, and the seed amount is adjusted by the rotating brush 30 rotating in the same direction. The set is returned onto the pay-out roll 29. However, most of the excess seeds are sandwiched between the bristles of the rotating brush 30 and are entrained, and when the rotating brush 30 makes sliding contact with the end of the chute 66, the bristles of the brush are bent and separated from the end of the chute 66. At the same time, the spring action (restoring force) of the bristles of the brush causes the seeds sandwiched between the bristles to be repelled, and the seeds are thrown out onto the chute 66, slide on the chute 66 and fall into the guide path 32. Therefore, a space where seeds are not scattered is formed below the chute 66, and the seeds supplied onto the feeding roll 29 are always supplied with a constant pressing force, and a constant amount of seeds is supplied. Therefore, the amount of seeds that enter the feeding groove 58 is also constant, the amount of seeds can be accurately adjusted by the rotating brush 30, and the optimum amount of seeds can be accurately fed.

68 is a seed guide plate, which has a curved shape having substantially the same curvature as the outer peripheral surface of the payout roll 29, is brought into contact with the payout side of the payout roll 29, and the seed that has entered the payout groove 58 on the guide path 32 side is The lower part of the feeding roll 29 is guided without being naturally dropped.

Reference numeral 69 denotes a scraper, which is formed in a comb shape so as to fit into scraper grooves 70 which are provided in a circumferential direction of the pay-out roll 29 at a large number of lines at equal intervals, and both ends thereof are attached to the support frame 27. Therefore, the seeds in the feeding groove 58 are surely pushed out from the feeding groove 58 and fall onto the soil in the nursery box 1 with good posture.

In the above embodiment, the inclination angle of the guide passage 32, the size of the hopper lower opening 31, the distance between the guide plate 59 and the chute 66, the inclination angle of the chute 66, the chute 66 and the rotating brush 30.
It is necessary to select and set the state of sliding contact with etc. so as to match the properties of the seeds to be handled.

(Effect of the Invention) The powdery- or granular-material feeding device according to the present invention is provided with a feeding roll 29 rotatable above the seedling-raising-box transfer mechanism 2 and rotatable about an axis in a direction transverse to the transfer direction of the seedling-raising box 1. Roll 29
Above, a rotary brush 30 that rotates in the same direction as the feeding roll 29 to adjust the amount of seeds that enter the feeding groove 58 is provided, on the rear side in the rotational direction of the upper side of the feeding roll 29, the upper side of the feeding roll 29. In the seed feeding device provided with a guide path 32 that is formed in a downward slope toward the feeding roll 29 to guide the seeds from the lower opening 31 of the hopper 28 located in the feeding groove 58 of the feeding roll 29, Between the rotary brush 30 and the guide path 32, a chute 66, one end of which is in sliding contact with the rotary brush 30 and the other end of which is close to the guide path 32,
Since the side is inclined so as to be low and has a space in which seeds can stay with the feeding roll 29, the feeding roll is fed from the hopper 28 by the chute 66 located between the rotary brush 30 and the guide path 32. The seeds supplied on the 29 are limited, the seeds do not excessively stay on the feeding roll 29, and the seeds sandwiched in the rotary brush 30 are obtained by the rotary brush 30 slidingly contacting the chute 66. The spring action of the brush bristles prevents the brush bristles from springing up, dropping them on the chute, returning them to the guide path 32, and supplying them to the front side in the rotation direction of the upper part of the feeding roll 29.

As described above, the shoot 66 has an effect that the optimum amount of seeds can be accurately delivered.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is a central longitudinal side view, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG.
The figure is an overall explanatory view of a seedling raising plant in which the present invention is adopted,
FIG. 4 is a sectional explanatory view showing a conventional technique. 2 ... Nursery box transfer mechanism, 28 ... Hopper, 29 ... Delivery roll, 30 ... Rotating brush, 31 ... Lower opening, 32 ... Guideway, 58 ... Delivery groove, 66 ... Shoot, 67 ... …space.

Claims (1)

[Claims] 1. A feeding roll 29 is provided above the seedling raising box transfer mechanism 2 so as to be rotatable about an axis transverse to the feeding direction of the seedling raising box 1, and above the feeding roll 29, inside the feeding groove 58. A rotating brush 30 that rotates in the same direction as the feeding roll 29 is provided to adjust the amount of seeds to enter, and the lower opening 31 of the hopper 28 located on the upper side of the feeding roll 29 is provided on the rear side in the rotation direction of the upper side of the feeding roll 29. In the seed feeding device provided with a guide path 32 that is formed in a downward slope toward the paying roll 29 in order to guide the seeds in the paying groove 58 of the paying roll 29 from the rotary brush 30 and the guide path 32. Between one end of the chute 66, one end of the chute 66 slidably contacts the rotating brush 30 and the other end of the chute 66 approaches the guide path 32.
Is provided so as to be inclined so that the side of the guide path 32 becomes lower and has a space in which seeds can stay with the feeding roll 29.