JPS6359644B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a seeding amount changing device that can be used in a row seeding device for seedling raising boxes, and is capable of finely adjusting the amount of seed sowing and also adjusting it in the length direction. It was made so that it could be sown.
Furthermore, the present invention allows seed rice to be sown one grain at a time.

If you make rows on the surface of the bed soil in the seedling box and sow seeds within the rows, the growth will be better than if you sow them in a scattered manner, but even if you sow the same stripes, it will grow even better if you sow them in more complete rows. Growth will improve.

For example, if you take a grain of rice with tweezers and carefully line it up in the center of the row, you will be able to sow a perfect row with the desired amount of seed, which will result in extremely good growth. In this case, even if the placement is the same, if the seed rice is placed so that its longitudinal direction runs along the rows, it will grow better than if it is placed freely along the rows.

However, sowing methods such as placing rice seeds with tweezers are not industrially practical, so row sowing similar to that method was made to be industrially achievable.

Another problem with row sowing is the amount of seed sown. When it comes to the total amount of seed sown in rows, if it is sown thickly all over, it must be sown thinly, but there is currently no particularly effective method. .

The present invention provides a simple solution to this problem.

In the present invention, at least two inclined guide rolls are arranged in parallel with a narrow interval to prevent the seeds from falling between the feed roll shafted at the lower part of the seed rice hopper and the sowing surface of the seedling box. The gist of the invention is a sowing amount changing device that forms a rice seed straightening channel on the upper surface of the guide roll, and changes the rotational speed of the guide roll to increase or decrease the sowing amount by changing the rotational speed.

To explain with a diagram, 1 is a transfer table; transfer table 1
A large number of rolls 3 are attached to move the seedling raising box 2 laterally. The roll 3 is rotated by a motor at a constant speed and transports the seedling growing box 2 placed thereon.
The seedling raising box 2 is a square box with a shallow bottom made of synthetic resin, and the inside is filled with bed soil 4, seeds are sown, and seedlings are grown. For the transferred seedling box 2,
A rowing device 5 is attached to the transfer table 1 for contacting the seeding surface on the upper surface of the soil bed 4 and forming rows on the seeding surface. The rowing device 5 is provided with a rowing roll 7 having a large number of annular rings 6 arranged in parallel so as to be movable up and down, and is normally biased to constantly move downward using a spring. The box 2 lifts the striped roll 7 and enters under it. In the embodiment, the lower end of the arm 8 is pivoted to the transfer table 1, the arm 8 is tilted, and the striped roll 7 is pivoted to the upper end of the arm 8. The striated roll 7 may be of a self-rotating type, but it is usually of a drive type. When a drive type is used, the arm 8 is preferably formed into a transmission case, and a chain or the like is built into the transmission case. Reference numeral 9 denotes a threaded rod that defines the maximum downward movement position of the striped roll 7, and its lower end abuts against the transfer table 1. A sowing device 12 is provided so that seed rice 11 can be sown at a place where rows 10 are attached with a row roll 7. The seeding device 12 is made up of a seed hopper 13 and a feed roll 14. Conventionally, a seed guide device having various structures has been provided between the sowing device 12 and the sowing surface, but the present invention is provided with a specially developed seed guide device. This point is the gist of the present invention. That is, at least two inclined guide rolls 15, 15, . . . are arranged in parallel. The guide rolls 15, 15...
is the seed rice straightening channel 1 between the rolls 15 and 15.
6 are arranged in parallel and close to each other at intervals where the seed rice does not fall. Which roll 15
A gear 17 is attached to the higher side of both wheels and rotates at the same speed. In the embodiment of FIG. 3, the gear 17,
An intermediate gear 21 is attached in the middle of 17.
A passive gear 22 is attached to one of the shafts of the guide rolls 15, and a chain 25 is wound between the driven gear 22 and the drive gear 24 of the variable speed motor 23.
The group of rolls 15 has the dropping part 18 of the seeding device 12 facing a position above the high side so that the seed rice fed out from the feeding roll 14 falls on the high side,
Moreover, the rolls 15 are arranged so as to be parallel to the strips 10 when viewed from above. Guide roll 15,1
5 is attached at an angle that does not allow the seed rice 11 to flow down when it is stopped, but allows the seed rice 11 to flow down when it rotates. Also, due to the structure, when the rotation speed is high, a large amount of water flows down, and when it slows down, a small amount of water flows down.
The change is approximately proportional to the rotation speed. 19 is the suppression roll, and 20 is its arm.

Since the present invention has the above-described configuration, the seed rice hopper 13 is filled with sprouted rice seeds 11, the seedling raising box 2 is filled with bed soil 4, and the seedling raising box 2 is transferred to the transfer table 1.
When placed on the starting end side of the seedling box 2, the seedling raising box 2
is fed by the rotation of the striation roll 7 of the striation device 5.
When passing under the annular ring 6, a striation 10 is applied. When the feeding roll 14 rotates, the seed rice 11 in the seed rice hopper 13 is fed out little by little and dropped from the drop section 18 to the guide roll 1.
5, 15 is fed to the high side of the roll 15,
15 are all rotating in the same direction, the rice seeds 11 flow into the rice seed straightening channel 16 formed between the rolls 15, 15, and are gradually straightened into a line. The longitudinal direction is parallel to the rectifying channel 16, and the grains are sown one by one in the rows 10. In this case, the amount sown in the row 10 is determined by changing the rotational speed of the variable speed motor 23, thereby changing the rotational speed of the guide rolls 15, 15. That is, when the rotational speed of the guide rolls 15, 15 is changed, the speed of the flow of rice seeds flowing through the rectifying channel 16 changes, and the amount of sowing changes.

The present invention has the above-mentioned structure and function, and in particular, at least two inclined guide rolls 15 are provided between the feed roll 14 shafted at the lower part of the seed rice hopper 13 and the sowing surface of the seedling raising box 2 to prevent the seed rice 11 from falling. The guide rolls 15 are arranged in parallel at intervals to form a rice seed straightening channel 16 on the upper surface between the guide rolls 15, and the rotation speed of the guide rolls 15 can be changed to increase or decrease the amount of sowing by changing the rotation speed. (1) It is possible to sow the rice seeds in perfect alignment one by one.

(2) It is possible to sow seed rice aligned in the longitudinal direction.

(3) You can adjust the minute amount of rice seed sown as you wish.

(4) It has the effect of reliably guiding the seed rice to the center of the row.

[Brief explanation of the drawing]

FIG. 1 is an overall side view, FIG. 2 is a longitudinal side view of FIG. 1, and FIG. 3 is a perspective view of the main parts. Explanation of symbols, 1...transfer table, 2...seedling box, 3
...roll, 4...bed soil, 5...rowing device, 6...
...Annular ring, 7...Striped roll, 8...Arm, 9
...screw rod, 10...row, 11...seed rice, 12...
...Seeding device, 13... Seed hopper, 14... Feeding roll, 15... Guide roll, 16... Seed straightening path, 17... Gear, 18... Falling part, 19...
Suppressing roll, 20... Arm, 21... Intermediate gear, 22... Passive gear, 23... Variable speed motor,
24... Drive gear, 25... Chain.

Claims (1)

[Claims] 1. By arranging at least two inclined rolls in parallel between the seed hopper and the sowing surface of the seedling raising box with a narrow interval so that the seed rice does not fall, the seedling raising box can be moved from the seed hopper to the upper surface between the rolls. A sowing rate changing device, which has a configuration in which a rice seed flow path is formed, and the roll is configured to be able to change the rotational speed to increase or decrease the sowing rate.