JP2852280B2 - 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]

A feature of the present invention resides in the following structure in a seedling guide structure of a rice transplanter. A seedling rest on which the seedlings are placed, an outlet for the seedlings 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; A pair of left and right seedling guides extending downward along the passage trajectory, engagement portions provided on each of the left and right seedling guides, and the right and left seedling guides extend across the right and left seedling guides on opposite sides of the planting claws. The right and left seedling guides are provided with a connecting member that can set and change the distance between the right and left seedling guides. The connecting member and the engaging portion are configured so that the connecting member is separated from the engaging portion in the opposite direction so that the member is engaged with the engaging portion and the connecting member is laid across the left and right seedling guides. It is.

[0007]

According to the first aspect of the present invention, the distance between the left and right seedling guides can be changed by the connecting member. 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 from the planting nails, for example, if the interval 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] In a pair of left and right seedling guides as in the feature of claim 1,
When the distance between the left and right seedling guides is changed, a connecting member as in claim 1 is laid across the left and right seedling guides, and the distance between the left and right seedling guides is set and changed by this connecting member. Is considered as a simple structure.

In this case, when the planting nail takes out the seedling from the outlet, the planting nail and the seedling (root) pass between the left and right seedling guides and reach the field, so that the connecting member is left and right. The connecting member is located on the opposite side of the left and right seedling guides from the planting claws in a state of being installed on the seedling guide. Therefore, the planting claws and the seedlings (roots) pass between the left and right seedling guides and reach the field without contacting the connecting member.

[III] In the feature of the first aspect, when the connecting member is erected on the left and right seedling guides, for example, as shown in FIG.
6, the connecting member 17 is engaged with the engaging portion 16b in the direction toward the left and right seedling guides 16 from the side opposite to the planting claws (left side in the drawing), and the connecting members 17 are connected to the left and right seedling guides 16. It is constructed so as to be spanned over.

Thus, when the connecting member 17 is erected on the left and right seedling guides 16, the operator pushes the connecting member 17 into the engaging portion 16 b with the index finger or thumb while grasping the seedling guide 16 by hand. Then, the connecting member 17 is engaged with the engaging portion 16b, and the connecting member 17 is bridged between the left and right seedling guides 16. When the connecting member 17 is pulled away from the seedling guide 16 in the opposite direction, the connecting member 17 is disengaged from the engaging portion 16b. In this case, when engaging and removing the connecting member with the engaging portion of the seedling guide, the connecting member is pressed against the engaging portion without performing a complicated operation such as tightening or loosening the bolts and nuts. The connection member can be easily engaged with or removed from the engaging portion by being separated or separated.

[0013]

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. When the connecting member for setting and changing the interval between the left and right seedling guides is provided as in the first aspect, the planting claws and the seedlings (roots) do not contact the connecting member so that there is no obstacle between the left and right seedling guides. Since the seedlings pass through and reach the field, and the seedlings are planted, planting defects such as planting nails and seedlings (roots) coming into contact with the connecting members and falling from the planting nails do not occur.

According to the first aspect of the present invention, if the connecting member is pushed into the engaging portion with the index finger or thumb while grasping the seedling guide by hand, the connecting member is engaged with the engaging portion and connected. The points where the members are erected on the left and right seedling guides, and
The workability of attaching and detaching the connecting member is good because the connecting member can be easily installed and removed across the left and right seedling guides without performing a complicated operation by engaging with the engaging portion. It will be.

[0015]

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 reciprocally moved in a fixed 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. 1, the lower end of the seedling rest 6 is guided and supported by a sliding rail 11 fixed to the planting transmission case 10, and the upper rear surface of the seedling rest 6 is in front of the planting transmission case 10. Left and right slidably engaged with upper ends of a pair of left and right support frames 13 erected from the left and right ends of a square pipe-shaped main frame 12 supporting the portions.

As shown in FIG. 2, an outlet 14 through which the planting claw 7a (see FIG. 1) of the seedling planting mechanism 7 at each planting strip passes is formed on the sliding rail 11, and the outlet 14 is provided with a notch. A guide 15 is attached, and a pair of right and left seedling guides 16 for guiding the roots of the seedlings taken out by the planting claws 7a from left and right are attached below the left and right sides of the outlet guide 15. The seedling guide 16 is made of a resin material, and is inserted into and attached to a mounting groove 15a formed in the outlet guide 15 via a guide projection 16a.

The outer surface of the seedling guide 16 is provided with a pair of upper and lower tapered stepped projections 16b and 16c (corresponding to engagement portions). U-shaped connecting member 17 for regulating the interval
It is used for erection. For example, as shown in FIG.
Since the connecting member 17 is engaged with the constricted portion of the projection 16b (16c) in the direction toward the left and right seedling guides 16 from the opposite side, the connecting member 17 is laid across the left and right seedling guides 16. Yes, the connecting member 17 separates from the protrusion 16b (16c) in the opposite direction. Left and right seedling guide 16
When the connecting member 17 is laid across the connecting member 17, the connecting member 17 is located on the left and right seedling guides 16 on the side opposite to the planting claws 7a.

As shown in FIGS. 3 and 4, when the connecting member 17 is engaged with the upper left and right projections 16b and the connecting member 17 is laid across the left and right seedling guides 16, the left and right seedling guides 16 are formed. The interval is set to a narrow one, and the left and right seedling guides 16 are set to be elastically expandable in a narrowed manner,
The function of pressing the roots of the seedlings from left and right is fully demonstrated. Conversely, the connecting member 17 extends over the lower left and right protrusions 16c.
Is installed, the interval between the left and right seedling guides 16 is set to be slightly wide, and the left and right seedling guides 16 are fixed in a state where they are slightly narrowed and do not elastically expand.

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 perspective view of an opening of a sliding rail and a vicinity of a seedling guide;

FIG. 3 is a side view of a seedling guide and a connecting member.

FIG. 4 is a rear view of a seedling guide and a connecting member.

[Explanation of symbols]

 6 Nursery stand 7a Planting claw 14 Extraction port 16 Nursery guide 16b, 16c Engagement part of nursery guide 17 Connecting member

Claims (1)

(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), engaging portions (16b) and (16c) provided in each of the left and right seedling guides (16), and the planting claws (7) in the left and right seedling guides (16).
On the opposite side to a), the left and right seedling guides (16)
The connecting member (17) that can set and change the interval between the left and right seedling guides (16) by being erected over
And the planting claw (7) with respect to the left and right seedling guides (16).
The connecting member (17) is engaged with the engaging portions (16b) and (16c) in a direction toward the left and right seedling guides (16) from the side opposite to the side of FIG.
7) so as to extend over the right and left seedling guides (16) so that the connecting member (17) is separated from the engaging portions (16b) and (16c) in the opposite direction. 17) and a seedling guide structure of the rice transplanter, which constitutes the engaging portions (16b) and (16c).