JPH09275733A - Seedling scraping quantity regulator for transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the scraping performance of seedlings. SOLUTION: This rice transplanter is provided with a seedling tray for placing a nursery bed 8, and the seedlings on the nursery bed 8 are scraped by a beak 15a just for prescribed quantity every time and planted on the fields. The rice transplanter is provided with a vertical apron regulation cam 4 for regulating the scraping quantity of seedlings more or less by moving an apron 11 for supporting the seedling tray away from or closer to the beak 15a and an apron supporting stand 17 for changing drawing quantity as difference between the position for the beak 15a to rush into the nursery bed 8 vertically to the nursery bed 8 in the case of scraping the nursery bed 8 through the beak 15a and the position for the beak 15a to get out of the nursery bed 8. Then, when the vertical apron regulation cam 4 is operated and the scraping quantity of seedlings is regulated to be more, while being interlocked with this regulation, the drawing quantity is changed to be more and, when the scraping quantity is regulated to be less, while being interlocked with this regulation, the drawing quantity is changed to be less.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling scraping amount adjusting device in a transplanter, and more specifically, it is possible to simultaneously change a scraping amount and a pulling amount when scraping a seedling placed on a seedling mounting table. The present invention relates to a seedling scraping amount adjusting device for a transplanting machine.

[0002]

2. Description of the Related Art When a seedling is planted in a field (for example, a rice field) with a transplanter, a planting rod is rotated as a wheel travels. This planting rod has a beak and a fork. A beak to the rear of the machine while applying a shearing force to the nursery bed, scraping the seedlings of the number of plants per plant (hereinafter referred to as "scraping amount") from the nursery bed, and the scraped seedlings. The seedlings are detached with a fork and planted in the rice field. The difference between the position of the seedling and the position at which it emerges from the nursery affects the planting performance of the seedling.

[0003] Generally, if the scraping amount of the seedlings is increased, the separation of the seedlings from the nursery becomes worse, while if the scraping amount is decreased, the seedlings slip out of the beak and become comb-shaped. It is known that the beak pulling amount is fixed at a predetermined value, and only the scraping amount of seedlings can be changed.

[0004]

However, as described above, since the scraping amount of the seedling and the pulling amount of the beak affect the planting performance of the seedling, as shown in FIG. 12, for example,
When the scraping amount of the seedlings from the seedbed 8 is small and the pulling amount l ₄ of the beak 15a at the time of scraping is large, as shown in FIG. 13, the beaks 15a scrape the seedlings into comb teeth. , The number of seedlings scraped out varies, and Fig. 1
As shown in FIG. 4, the roots below the seedbed 8 remain for a long time, and the roots hit the apron 11 and impede the vertical feeding performance of the seedlings.

Further, as shown in FIG. 15, when the scraping amount is large and the beak 15a has a small pulling amount l _3, there is a problem that the scraping performance is inferior because the beak 15a only pierces the seedling. .

The present invention has been made in order to solve such a problem, and its object is to change the pulling amount largely when the scraping amount of seedlings is greatly adjusted, and to adjust the scraping amount to be small. It is an object of the present invention to provide a seedling scraping amount adjusting device capable of improving scraping performance by changing the pulling amount small.

[0007]

In order to achieve this object, the present invention comprises a seedling table (7) on which a seedbed (8) is placed, and the seedling table (7) is provided with a seedling receiving plate (7). In the transplanter (1), which is supported by the planting part (5) so as to be movable in the left-right direction at 11), and scrapes the seedbed (8) by a predetermined amount by the planting rod (15) in a predetermined amount to plant in the field. Scraping amount changing means (4) for changing the scraping amount of the seedlings by the planting rod (15) by moving the seedling receiving plate (11) in the perspective direction with respect to the planting rod (15), and the planting When the rod (15) scrapes off the nursery (8), the position where the planting rod (15) enters the nursery (8) and the planting rod (15) when viewed from the direction perpendicular to the nursery (8) (8) provided with a pulling amount changing means (17) for changing the pulling amount which is a difference from the position of
It is characterized by the following.

Preferably, the scraping amount changing means (4)
When the scraping amount of the seedling is adjusted to be large by the above, the pulling amount changing means (17) is changed to increase the pulling amount in association with this, and the scraping amount changing means (4) scrapes the seedling. If you adjust the amount to be small,
In conjunction with this, the pulling amount changing means (17) is changed so that the pulling amount becomes smaller.

Preferably, the pulling amount changing means (17) changes the mounting angle of the seedling receiving plate (11) in conjunction with the changing operation by the scraping amount changing means (4). To do.

(Operation) In the present invention, the transplanter (1) is provided with the seedling placing table (7) for placing the seedbed (8) on the rear side of the machine according to the above-mentioned matters specifying the invention. 7) is supported by a seedling receiving plate (11) so as to be movable in the left-right direction with respect to the planting part (5), and the seedlings of the seedbed (8) are scraped off by a predetermined amount by a planting rod (15) in a field. The seedlings are planted in.

The transplanting machine (1) has the seedling receiving plate (1).
A scraping amount changing means (4) for adjusting the scraping amount of the seedling by the planting rod (15) to a large amount or a small amount by moving 1) in a perspective direction with respect to the planting rod (15), When the planting rod (15) scrapes off the nursery (8), the planting rod (15) moves from the surface of the nursery (8) to the nursery (8) when viewed from the direction perpendicular to the nursery (8). The position to rush,
The planting rod (15) is provided with a pulling amount changing means (17) for changing the pulling amount, which is the difference between the position where the planting rod (15) scrapes and moves inside the nursery (8) and goes out from the bottom surface thereof.

When the scraping amount changing means (4) is operated to increase the scraping amount of the seedlings, the pulling amount changing means (17) increases the pulling amount in conjunction with this. If the scraping amount is adjusted to be small, the pulling amount is changed so that the pulling amount becomes small.

Note that the reference numerals in parentheses described above are for reference to the drawings, and do not limit the configuration of the present invention at all.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a passenger multi-row rice transplanter as a transplanter to which the present invention is applied. The passenger rice transplanter 1 has a traveling machine body 2 supported by front wheels 22 and rear wheels 23 on its front side. A planting portion 5 is supported at the rear of the traveling machine body 2 via a link 3 so as to be vertically movable.

The planting section 5 has a seedling placing table 7 for placing a seedbed thereon, and a belt 9 for feeding the seedlings is attached to the seedling placing table 7, and the planting section 5 is provided. A float 20 is attached below the. Then, the seedbed is sequentially transported to the lower end side based on the driving of the belt 9 and is planted by the planting unit 5.

That is, as shown in FIG. 2, the seedling placing table 7 is provided with a plurality of seedling placing portions 7a for vertically placing a seedbed, and the seedling placing portions 7a are arranged in the lateral direction of the machine body. The lower end thereof is supported by an apron 11 serving as a seedling receiving plate, and is arranged so as to be movable laterally with respect to the planting section 5.

Further, as shown in FIGS. 3 and 4, a scraper 10 is supported on the lower end of the seedling placing table 7, and the scraper 10 is loosely fitted to the rear edge 11a of the apron 11. . The apron 11 has a shape extending in the lateral direction of the machine along the lower surface of the seedling stand 7 so as to receive the lower surface of the seedbed placed on the seedling stand 7.
Further, the front edge portion 11b of the apron 11 is extended to the back side of the seedling stand 7. The front edge portion 11b has a bag shape, and the bolt 12 is embedded in the hole formed in the front edge portion 11b. Further, a rail portion 7b is provided so as to project from the rear surface of the seedling placing base 7, and the rail portion 7b is continuously formed along the lateral direction of the body of the seedling placing base 7.

On the other hand, a plurality of planter cases 13 are arranged below the seedling placing table 7, and these planter cases 13 are connected by a shaft case 13a, and each planter case 13 is connected by a shaft in the shaft case 13a. The driving force is transmitted to the case 13. A planting rod 15 is attached to each planter case 13, and the planting rod 15 is driven by the driving force of the shaft. And, by the planting rod 15,
The seedbeds placed on the seedling placing table 7 are scraped off by a predetermined amount and planted in the field.

Here, in the present invention, the apron 11 is moved in a perspective direction with respect to the planting rod 15 to change a scraping amount of seedlings by the planting rod 15, and the planting rod. When 15 scrapes off the nursery, the position where the planting rod 15 enters the nursery and the planting rod 1 when viewed from the vertical direction with respect to the nursery.
5 is a pulling amount changing means for changing the pulling amount, which is the difference from the position of leaving the nursery.

That is, as shown in FIG. 3, the planter case 13 has a flange portion 13b formed near the shaft case 13a, and the flange portion 13b has an apron support as a pulling amount changing means. Stand 1
7 is fixed.

As shown in FIG. 5, the apron support base 17 is composed of a block having a substantially rectangular cross section, and the support surface for supporting the front edge portion 11b of the apron 11 is a flat surface substantially parallel to the bottom surface. The angle θ with respect to the flat portion 17a and the flat portion 17a
It has a taper part 17b inclined by (for example, 3 ° to 7 °). An attachment hole 17c for the apron support base 17 is formed at substantially the center of the taper portion 17b, and the flat portion 17a and the taper portion 17b are crossed in the vicinity of the left and right ends of the apron support base 17. So that the long hole 17
d and 17d are provided.

As shown in FIGS. 3 and 4, a resin slide piece 19 is attached to the end surface on the taper portion 17b side by a bolt 21. From the back surface of the slide piece 19 and the seedling placing table 7, as shown in FIG. The protruding rail part 7
The seedling stand 7 is supported so as to be movable in the left-right direction of the machine body with respect to b.

On the other hand, as shown in FIGS. 6 to 9, two apron supports 17 are attached at predetermined intervals along the longitudinal direction of the apron 11, and two apron supports 17 are provided in each apron support 17. The bolt 12 is attached to one of the long holes 17d.
Is inserted, and the bolt 12 and the spring (compression) 14
The apron 11 is attached to the apron support base 17 while being brought into close contact with the apron 11 by a spring pressure with a nut 24.

In addition, in the other of the two long holes 17d,
An apron up / down adjustment cam 4 as a scraping amount changing means is loosely fitted, and an enlarged front end portion 4a of the cam 4 is fitted into a groove portion 11c formed on a bottom surface of a front edge portion 11b of a bag-shaped apron 11. Has been done.

The apron vertical adjustment cam 4 is integrally connected to an adjustment lever 16 via a rotary shaft 6, and the adjustment lever 16 is connected to a scraping lever 51.

Therefore, by rotating the scraping lever 51, the apron 1 is inserted through the elongated hole 17d.
Apron vertical adjustment cam 4 fitted in the groove 11c of No. 1
Around the rotation shaft 6, the elongated holes 17d, 17
Swing in d. Then, the front edge portion 11b of the apron 11 supported by the apron support base 17 has the apron support base 1
7 between the flat portion 17a and the tapered portion 17b. Along with this, the apron 11 moves in the perspective direction with respect to the planting rod 15.

That is, when the front edge portion 11b of the apron 11 is supported by the flat portion 17a, the rear edge portion 11a of the apron 11 is in a position close to the planting rod 15 and When the front edge portion 11b of 11 is supported by the taper portion 17b, the rear edge portion 11a of the apron 11 is located far from the planting rod 15.

More specifically, as shown in FIG. 10, from the state where the front edge portion 11b of the apron 11 is supported by the tapered portion 17b of the apron support base 17 (the position indicated by the chain double-dashed line), the apron is moved up and down. When the adjusting cam 4 is rotated in the A direction (clockwise direction) in the figure, the front edge portion 11b of the apron 11 is rotated.
Is the flat part 17a side of the apron support stand 17 (solid line position)
Then, the apron 11 comes to a position close to the planting rod 15.

In this state, when the beak 15a of the planting rod 15 scrapes the seedbed 8, since the apron 11 is approaching the planting rod 15, the beak 15a moves along its trajectory T. The amount of seedlings scraped when doing is increased. At this time, the difference between the position where the planting rod 15 enters the nursery bed 8 (point a in the figure) and the position where the planting rod 15 exits the nursery bed 8 (point b in the diagram) when viewed from the vertical direction with respect to the nursery bed 8. Draw amount (l
₁ ) is also a large value.

Next, as shown in FIG. 11, an apron 11
Front edge 11b of the flat portion 17a of the apron support 17
When the apron vertical adjustment cam 4 is rotated in the direction B (counterclockwise) in the figure from the state where it is supported by the apron 11, the front edge 11b of the apron 11 is tapered by the taper portion 17b of the apron support base 17.
When moved to the side, the apron 11 is located away from the planting rod 15.

In this state, when the beak 15a of the planting rod 15 scrapes the seedbed 8, the beak 15a moves along its trajectory T because the apron 11 is separated from the planting rod 15. The amount of seedlings scraped at that time is reduced.
At this time, the difference between the position where the planting rod 15 enters the nursery 8 (point c in the figure) and the position where the planting rod 15 exits the nursery 8 (point d in the diagram) when viewed from the direction perpendicular to the nursery 8 is shown. The pull amount (l ₂ ) also has a small value. Therefore, the seedling scraping performance is improved regardless of whether the seedling scraping amount is large or small.

In the above, when the apron vertical adjustment cam 4 is swung, the apron 11 is moved to the apron support base 1.
7 is slid on the support surface of the planting rod 15 in the perspective direction with respect to the planting rod 15 to change the scraping amount of the seedlings and the apron 1
1 is a flat portion 17a and a tapered portion 17 of the apron support base 17.
By moving between b and b, the attachment angle of the apron 11 is changed and the pulling amount of the seedling is also changed at the same time.

That is, when the apron vertical adjustment cam 4 is swung to adjust the scraping amount of seedlings, the apron support 17 interlocks with the scraping amount to increase the pulling amount. Further, when the scraping amount is adjusted by the apron up / down adjusting cam 4 to be small, the apron support base 17 interlocks with the scraping amount to change the scraping amount.

Next, the operation of this embodiment described above will be described.

At the time of planting work, the planting rods 15 are operated to sequentially scrape off the seedlings from the nursery bed 8 placed on the seedling platform 7 to plant the seedlings in the field. In order to smoothly supply the seedlings to the section 5, the seedbed 8 is continuously supplied to the planting section 5 while the seedling platform 7 moves in the lateral direction of the machine body along the apron 11.

At this time, the seedling placing table 7 has a rail portion 7b fixed to the back surface of the seedling placing table 7 when the seedling placing table 7 is moved laterally.
And the slide piece 1 provided on the apron support base 17.
It moves smoothly with 9 being in surface contact.

Now, in order to change the scraping amount of the seedlings from the seedbed 8, in FIG. 10, the scraping lever 51 is rotated in the clockwise direction (the direction of arrow A), and the apron 11 is shown by the chain double-dashed line. When the apron vertical adjustment cam 4 is moved from the position to the position shown by the solid line, the enlarged portion 4a of the apron up / down adjusting cam 4 pushes the apron 11 downward through the groove 11c of the apron 11. At the same time, the support surface of the apron 11 also changes, and the apron 11 rotates clockwise by the angle θ (direction of arrow A).

As a result, the apron 11 moves in a direction approaching the planting rod 15, the amount of seedlings scraped off from the nursery 8 by the planting rod 15 increases, and the apron 11 rotates as the nursery bed rotates. The direction perpendicular to 8 (shear direction) changes, and the pulling amount increases.

Further, in FIG. 11, a scraping lever 51
Is rotated counterclockwise (direction of arrow B) to move the apron 11 from the above-mentioned position (position of FIG. 10) to the position shown in FIG. The apron 11 is pushed upward through the groove 11 c of the seedling 11 on the seedling stand 7. At the same time, the support surface of the apron 11 also changes, and the apron 11
Rotates counterclockwise (direction of arrow B) by an angle θ.

As a result, the apron 11 moves in a direction away from the planting rod 15, the amount of seedlings scraped from the seedling 8 by the planting rod 15 decreases, and the seedbed 8 rotates as the apron 11 rotates. The vertical direction (shear direction) with respect to changes, and the pulling amount decreases.

[0042]

As described above, according to the present invention, the seedling receiving plate that supports the seedling mounting table is moved in the perspective direction with respect to the planting rod to change the scraping amount of the seedling by the planting rod. The scraping amount changing means and the difference between the position where the planting rod enters the nursery and the position where the planting rod exits the nursery when viewed from the direction perpendicular to the nursery bed when the planting rod scrapes the nursery. By providing the pulling amount changing means for changing the pulling amount, it is possible to freely change the scraping amount and the pulling amount of the seedlings, thereby improving the scraping performance.

In particular, even when the scraping amount is small, it is possible to scrape a certain number of seedlings by adjusting the pulling amount appropriately and without causing the scraped seedlings to have a comb-like shape. In addition, since the scraped seedling does not have a comb-like shape, the roots below the seedling do not hinder the vertical feeding function of the seedbed.

Further, according to the present invention, when the scraping amount of the seedlings is adjusted to be large, the pulling amount is changed so as to be interlocked with this, and when the scraping amount is adjusted to be small, this is changed. The pulling amount changing means changes the attachment angle of the seedling receiving plate in association with the change operation by the scraping amount changing means by changing the pulling amount so that the pulling amount is reduced. By configuring it to
A preferable pulling amount is automatically selected according to the magnitude of the scraping amount of the seedling, and the scraping performance and workability can be improved. Moreover, since the structure is simple, it can be achieved at low cost.

[Brief description of drawings]

FIG. 1 is a side view of a riding rice transplanter to which the present invention is applied.

FIG. 2 is a plan view of the riding rice transplanter.

FIG. 3 is an enlarged side view of a planting part.

FIG. 4 is an enlarged side view of a planting part.

FIG. 5 is an external perspective view of an apron support base.

FIG. 6 is a view of the apron mounting portion viewed from the rear of the machine body.

FIG. 7 is a view of the apron mounting portion viewed from the side of the machine body.

FIG. 8 is a diagram showing an engaged state between an apron vertical adjustment cam and an apron.

FIG. 9 is a view showing how the apron is attached to the apron support base.

FIG. 10 is a diagram showing a positional relationship between a beak locus and an apron when a scraping amount is increased.

FIG. 11 is a diagram showing a positional relationship between a beak locus and an apron when the scraping amount is reduced.

FIG. 12 is a diagram showing a positional relationship between a beak locus and an apron when the scraping amount is small and the beak pulling amount is large.

FIG. 13 is a diagram showing a state where seedlings are scraped in a comb shape when the scraping amount is small and the beak pulling amount is large.

FIG. 14 is a diagram showing a state in which roots under a scraped seedbed remain long when the scraping amount is small and the beak pulling amount is large.

FIG. 15 is a diagram showing a relationship between a beak locus and a nursery bed when the scraping amount is large and the beak pulling amount is small.

[Explanation of symbols]

 1 Passenger rice transplanter 2 Traveling machine 4 Apron vertical adjustment cam 5 Planting part 6 Rotating shaft 7 Seedling platform 7a Seedling loading part 7b Rail part 8 Nursery 10 Scraper 11 Apron 11a Rear edge 11b Front edge 11c Groove 15 Planting Rod 15a Beak 17 Apron support 17a Flat portion 17b Tapered portion 17d Long hole 19 Slide piece 51 Scraping lever

Claims (3)

[Claims] 1. A seedling placing table for placing a seedbed is provided, the seedling placing plate is supported by a seedling receiving plate so as to be movable in the left-right direction with respect to a planting section, and the seedbed is fixed in a predetermined amount by a planting rod. In a transplanter for scraping and planting in a field, a scraping amount changing means for changing the scraping amount of seedlings by the planting rod by moving the seedling receiving plate in a perspective direction with respect to the planting rod, and the planting rod. When scraping the nursery, pulling amount changing means for changing the pulling amount which is the difference between the position where the planting rod enters the nursery and the position where the planting rod exits the nursery when viewed from the vertical direction with respect to the nursery, A seedling scraping amount adjusting device for a transplanter, comprising: 2. When the scraping amount changing unit adjusts the scraping amount of the seedling to be large, the pulling amount changing unit changes the pulling amount to be large in association with the scraping amount. The transplantation according to claim 1, wherein when the scraping amount is adjusted to be small by the changing unit, the pulling amount changing unit is changed so as to reduce the scraping amount in association with the adjustment. Scraping amount adjusting device for machine. 3. The pulling amount changing means is configured to change the mounting angle of the seedling receiving plate in association with the changing operation by the scraping amount changing means. A seedling scraping amount adjustment device for a transplanter.