JP2852277B2 - Rice transplanter seedling guide structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for planting seedlings in a rice transplanter.

[0002]

2. Description of the Related Art In general, a rice transplanter is provided with a seedling rest on which seedlings are placed, an outlet for seedlings formed below the seedling stand, and planting claws. The seedlings (roots) are planted in the field by holding the roots of the seedlings, taking out the seedlings, and inserting the planting claws into the field. In this case, a pair of right and left seedling guides extending downward from the outlet along the passage locus of the planting nails are provided, and after the seedlings are taken out from the outlet by the planting nails, the planting nails reach the lower field and the seedlings reach. Until the seedlings are planted, the seedling guide guides the roots of the seedlings from the left and right, and the seedling guides give light resistance to the roots of the seedlings, so that the seedlings (roots) do not fall from the planting nails. There are many.

[0003]

There are many mat-type seedlings used as seedlings for planting, and the mat-type seedlings are germinated by sowing seed seeds on the floor soil in a state where the soil is spread in a nursery box. Produced by. Therefore, the root portion of the seedling that the planting claw takes out from the outlet is in a state where the root of the seedling and the floor soil are intertwined. In this case, the type of floor soil to be used (for example, floor soil with a lot of clay or floor soil with a lot of sand)
Also, depending on the thickness of the floor soil laid in the nursery box, the nature of the roots of the seedlings, etc., the roots of the seedlings may be hard, soft, sticky and difficult to break, or brittle and easily break.

[0004] Thus, for example, when the roots of the seedlings are brittle due to sandy floor soil, etc.,
By the time it reaches the lower field and is planted,
The roots of the seedlings collapse due to the resistance received from the seedling guide, and the seedlings (roots) fall from the planting nails before reaching the lower field,
The planting claws may cause a condition where the seedlings cannot be planted normally in the field. Also, for example, when the root of the seedling is hard, if the resistance from the seedling guide is not sufficiently applied to the root of the seedling, the planting nail alone cannot hold the seedling (root) until it reaches the lower field as described above. In some cases, seedlings (roots) may fall off the planting nails.

[0005] Conversely, if the roots of the seedlings are sticky due to, for example, clay floor soil, the seedlings removed by the planting nails will
By the time it reaches the lower field and is planted,
When the root of the seedling bites into the planting nail due to the resistance received from the seedling guide, it becomes difficult for the root of the seedling to separate from the planting nail, and when the planting nail reaches the lower field and plant the seedling,
The roots of the seedlings may be delayed from being released from the planting nails, so that the seedlings may not be properly planted in the field. Further, for example, when the root portion of the seedling is loose due to softness or the like, even if the seedling (root portion) does not fall from the planting nail and reaches the field and is planted, the root portion of the seedling is loosened in the field after planting. Therefore, if the above-described seedlings that tend to have loose roots are planted in a soft field with a lot of water, the roots of the seedlings may fall apart in the field and the seedlings may fall easily. An object of the present invention is to provide a seedling guide structure of a rice transplanter so that seedlings can be normally planted in a field by planting claws regardless of the state of the root of the seedling.

[0006]

[1]

A seedling rest on which the seedlings are placed, an outlet for the seedling formed at the lower part of the seedling stand, and a planting claw for taking out the seedling through the outlet and planting it in the field are provided. Equipped with a pair of left and right seedling guides extending downward along the passage trajectory, the interval between the left and right seedling guides connected to the outlet is maintained at a predetermined interval, and the lower interval between the left and right seedling guides Is provided.

[2] A seedling rest on which seedlings are placed, an outlet for seedlings formed at the lower part of the seedling stand, and planting claws through which the seedlings are taken out and planted in a field, A pair of left and right seedling guides extending downward along the passage of the planting claws from the outlet is provided, and the space between the left and right seedling guides connected to the outlet is maintained substantially equal to the width of the outlet. There is provided changing means for freely changing the interval between the lower portions of the left and right seedling guides as it is.

[3] In the configuration of the above item [1] or [2], changing means is configured so that the distance between the lower portions of the left and right seedling guides can be freely changed in a downwardly narrowing shape in which the distance becomes narrower toward the lower side.

[0009]

According to the first aspect of the present invention, the interval between the left and right seedling guides can be changed by the changing means. Thereby, for example, if the roots of the seedlings are brittle due to sandy floor soil, etc., for example, if the interval between the left and right seedling guides is widened, the seedlings taken out by the planting claws reach the lower field and are planted until they are planted. As the resistance from the seedling guide to the root of the seedling decreases, the resistance received from the seedling guide collapses the root of the seedling,
There is no such thing as a seedling (root) falling from the planting nail. Also, for example, if the roots of the seedlings are sticky due to clay flooring, etc., for example, if the interval between the left and right seedling guides is widened, the resistance applied to the roots of the seedlings from the seedling guides will be reduced in the same manner as described above. There is no possibility that the root portion of the seedling bites into the planting nail due to the resistance received, and the root portion of the seedling is hardly separated from the planting nail.

Conversely, for example, when the roots of the seedlings are hard and easily fall off the planting nails, for example, if the distance between the left and right seedling guides is reduced, the resistance from the seedling guides will be sufficiently applied to the roots of the seedlings. By the nail and the left and right seedling guides, the seedling taken out by the planting nail is held by the planting nail without falling until it reaches the field below and planted in the field. Also, for example, when the root portion of the seedling is likely to be loose due to soft root portion of the seedling, for example, if the interval between the left and right seedling guides is reduced, the root portion of the seedling is relatively strongly pressed by the seedling guide. The roots of the seedlings taken out by the claws are pressed and compacted by the seedling guides, thereby preventing a state in which the roots of the seedlings fall apart in the field after planting.

[II] For example, when the interval between the left and right seedling guides connected to the outlet changes as the interval between the lower portions of the left and right seedling guides changes, the planting claws take out the seedlings from the outlet. At this time, the resistance and the pressing action of the root portion of the seedling to be taken out from the left and right seedling guide portions connected to the takeout port also change.

According to the first aspect of the present invention, the space between the left and right seedling guides connected to the outlet is maintained at a predetermined distance, and the lower means between the left and right seedling guides can be freely changed by the changing means. doing. In other words, even if the interval between the lower portions of the left and right seedling guides is changed by the changing means, the interval between the portions of the left and right seedling guides connected to the outlet does not change at the predetermined interval. Therefore, regardless of the distance between the lower portions of the left and right seedling guides, when the planting claws take out the seedlings from the outlet, the roots of the seedlings to be taken out are connected to the outlets. The resistance and the pressing action received from the plant are constant without changing, and the seedlings can be stably taken out from the take-out opening by the planting claws.

[III] According to the features of the second aspect, similar to the case of the first aspect, the present invention has the "action" described in the above-mentioned [I], and additionally has the following "action". ing. For example, if the interval between the left and right seedling guides connected to the outlet changes with the change in the interval between the lower portions of the left and right seedling guides, the planting claws move from the outlet as described in the preceding section (II). When the seedlings are taken out, the resistance and the pressing action that the roots of the seedlings receive from the left and right seedling guide portions connected to the takeout port also change.

According to a second aspect of the present invention, the spacing between the left and right seedling guides connected to the outlet is kept substantially the same as the width of the outlet, and the lowering means between the left and right seedling guides is changed by the changing means. Is configured to be freely changeable. In other words, even if the interval between the lower portions of the left and right seedling guides is changed by the changing means, the interval between the portions of the left and right seedling guides connected to the outlet remains substantially unchanged from the width of the outlet.
Therefore, regardless of the distance between the lower portions of the left and right seedling guides, when the planting claws take out the seedlings from the outlet, the roots of the seedlings to be taken out are connected to the outlets. The resistance and the pressing action received from the plant are not too large or too small, are not changed at appropriate values and are constant, and the seedlings are stably taken out from the take-out opening by the planting claws.

[IV] According to the feature of claim 3, similar to the case of claim 1 or 2, the "action" described in the above [I], [II], and [III] is provided. It has the following "action". When the lower portions of the left and right seedling guides are narrowed downward and the interval can be freely changed as in the feature of claim 3, after the planting claws pass through the outlet and take out the seedlings, the roots of the seedlings move from the seedling guide. The received resistance and the pressing action gradually increase. Therefore, the resistance and the pressing action received from the seedling guide are sharply increased, so that the seedling (root) is not detached from the planting nail and falls or the root of the seedling is not crushed.

[0016]

According to the first aspect of the present invention, in the seedling guide structure of the rice transplanter, by changing the interval between the left and right seedling guides, the root portion of the seedling (hard and soft, sticky and brittle, etc.) can be reduced. Irrespective of this, the seedlings can be normally planted in the field without dropping by the planting claws, and the state that the roots of the seedlings fall apart in the field after planting and the seedlings fall down can be prevented. Planting performance could be improved. According to the features of claim 1, even if the interval between the lower portions of the left and right seedling guides is changed, the resistance and the pressing action received from the left and right seedling guide portions where the roots of the seedlings to be taken out are connected to the outlet are not changed. Will be constant,
Since the seedlings can be stably taken out from the take-out port by the planting claws and the number of defective pick-ups is reduced, the planting performance of the rice transplanter can be further improved.

According to a second aspect of the present invention, in the seedling guide structure of the rice transplanter, the interval between the left and right seedling guides can be changed so that the planting can be performed regardless of the hardness of the root portion of the seedling or the amount of the seedling to be taken out. The planting performance of the rice transplanter can be prevented because the seedlings can be planted normally in the field without the nails falling down, and the roots of the seedlings fall apart in the field after planting and the seedlings fall. Could be improved. According to the feature of claim 2, even if the interval between the lower portions of the left and right seedling guides is changed, the resistance and the pressing action received from the left and right seedling guide portions connected to the outlet at the root portion of the seedling to be taken out are too large or too small. The planting performance of the rice transplanter can be further improved because the seedlings are removed stably from the outlet by the planting claws and the failure to remove the seedlings is reduced. Can be improved.

According to the features of claim 3, claim 1 or 2
"Effects of the Invention" of Claim 1 or 2 as in the case of
It has. According to the feature of the third aspect, the resistance and the pressing action of the root portion of the seedling received from the seedling guide are gradually increased, so that the seedling (root portion) comes off the planting nail and falls or the root portion of the seedling is crushed. Since it is unlikely that the seedlings will be planted, the planting failure of the seedlings caused by the planting claws is further reduced, and the planting performance of the rice transplanter can be further improved.

[0019]

1 shows a riding type rice transplanter to which the present invention is applied. In this rice transplanter, a seedling planting device 4 is connected to a rear part of a four-wheel drive type riding traveling body 1 via a four-link mechanism 3 driven by a hydraulic cylinder 2 so as to be able to move up and down. It has a structure in which the fertilizer application device 5 is mounted.

A plurality of seedlings for seedlings are placed on the seedling planting device 4, and the seedling rest 6 is reciprocated and moved laterally at a constant stroke. The seedlings are taken out from the lower end of the seedling rest 6 one plant at a time and planted. A rotary seedling planting mechanism 7 for a plurality of rows, a float 8 for leveling a field scene, a pair of left and right drawing markers 9 for forming a running reference line in a field scene for the next step, and the like are provided.

As shown in FIG. 2, the lower end of the seedling rest 6 is guided and supported by a sliding rail 11 fixed to the planting and transmission case 10, and as shown in FIG. A pair of left and right support frames 13 erected from the left and right ends of a square pipe-shaped main frame 12 that supports the front portion of the planting transmission case 10 is engaged and supported slidably left and right. .

As shown in FIG. 2 and FIG.
1 shows a planting claw 7a of the seedling planting mechanism 7 in each planting line.
Is formed with a notch, through which the outlet 1 passes.
A take-out guide 15 is attached to 4, and a pair of left and right seedling guides 16 for guiding the roots of the seedlings taken out by the planting claws 7 a from left and right are attached below the take-out guide 15. The seedling guide 16 is made of a resin material, and as shown in FIG.
5 is inserted into the mounting groove 15a formed through the guide protrusion 16a. Thereby, the outlet 14
The space between the left and right seedling guides 16 connected to the outlet port 14 is kept substantially the same as the width of the outlet 14.

On the outer surface of the seedling guide 16, a pair of upper and lower tapered projections 16b and 16c are provided, and the projections 16b and 16c are U-shaped to regulate the distance between the left and right seedling guides 16. It is used to bridge the connecting member 17 (corresponding to a changing means). FIG.
As shown in (a), the connecting member 1 is press-fitted from the tips of the upper left and right projections 16b and extends over the left and right seedling guides 16.
7, the distance between the left and right seedling guides 16 is set to be narrow, and the left and right seedling guides 16 are set to be narrowed down and elastically spread, so that the function of pressing the roots of the seedlings from the left and right is sufficient. It is exhibited in.

As shown in FIG. 4 (b), when the connecting member 17 is laid across the lower left and right projections 16c, the distance between the left and right seedling guides 16 is set to be slightly wide, and the left and right seedling guides 16 are set. Is slightly narrowed downward and is not elastically expanded. As shown in FIG. 5 and FIG. 6, the connecting member 17 may be pressed into and engaged with the constricted portions of the left and right projections 16b and 16c from the side.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is an overall side view of a riding type rice transplanter.

FIG. 2 is a side view of the vicinity of a slide rail outlet and a seedling guide.

FIG. 3 is a perspective view of the vicinity of an outlet of a sliding rail and a seedling guide.

FIG. 4 is a rear view of the vicinity of the seedling guide.

FIG. 5 is a side view showing another embodiment of the seedling guide and the connecting member.

FIG. 6 is a rear view showing another embodiment of the seedling guide and the connecting member.

[Explanation of symbols]

 6 Seedling stand 7a Planting claw 14 Extraction port 16 Seedling guide 17 Changing means

Claims (3)

(57) [Claims] 1. A seedling rest (6) on which seedlings are placed, and a seedling outlet (14) formed below the seedling rest (6).
And a planting claw (7a) through which the seedling is taken out through the outlet (14) and planted in the field, and extends downward along the passage locus of the planting nail (7a) from the outlet (14). A pair of left and right seedling guides (1
6), while keeping the interval between the left and right seedling guides (16) connected to the outlet (14) at a predetermined interval,
A seedling guide structure for a rice transplanter, comprising a change means (17) capable of changing a space below the left and right seedling guides (16). 2. A seedling rest (6) on which seedlings are placed, and an outlet (14) for seedlings formed below the seedling rest (6).
And a planting claw (7a) through which the seedling is taken out through the outlet (14) and planted in the field, and extends downward along the passage locus of the planting nail (7a) from the outlet (14). A pair of left and right seedling guides (1
6), and the left and right seedling guides (16) connected to the outlet (14) are maintained at substantially the same width as the width of the outlet (14). Guide (1
6) A seedling guide structure of a rice transplanter, comprising a changing means (17) capable of changing the lower interval. 3. The space between the lower portions of the left and right seedling guides (16) can be freely changed in a downwardly narrowed shape in which the distance is narrower as the lower side is reached.
The seedling guide structure for a rice transplanter according to claim 1 or 2, wherein said changing means (17) is constituted.