JPS5933218Y2 - Seedling planting device in rice transplanter - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a seedling planting device in a rice transplanter.

More specifically, the present invention relates to a seedling planting device suitable for planting potted rice seedlings grown in paper pots or the like.

The potted seedlings described above are grown in a 14 mm square paper tube, and these pot unit seedlings are made up of 20 pot unit seedlings horizontally and 42 vertically glued to each other to make a short whole. The short-shaped potted seedlings are grown in a seedling box similar to regular mat seedlings by spot-seeding each unit.

This type of potted seedling has the disadvantage that it is more expensive as a whole because it requires seedling raising materials such as paper tubes to separate each unit compared to matted seedlings, but By raising seedlings, the temperature above the bed during seedling raising can be increased (adding the cumulative temperature), so it is very effective for raising seedlings in cold regions such as Hokkaido.

In addition, since the seedlings are grown by dot-sowing in paper tubes, there is the advantage that by planting in paper tubes, there is no collapse of the seedbed and there are fewer missing plants, unlike unit seedlings of mat seedlings.

When planting this type of potted seedlings, group potted seedlings are placed on a seedling mounting table that moves back and forth to the left and right of the rice transplanter.
Seedlings in unit pots are planted in the upper field divided into unit pot seedlings using a planting rod facing the seedling take-out port provided on the seedling table, but the unit pot seedlings to be divided are placed in an open position facing the seedling take-out port on the seedling table. If, due to the resistance of the nails piercing the upper part of the seedling bed, the glue separates before dividing and tilts inside the seedling outlet, the seedlings will be planted in this tilted state.

In addition, the potted seedlings after division will pass through the rice field during the movement range from the division position to the planting position, but at this time, only the upper part of the seedbed is supported by the piercing nails, and the surrounding area is surrounded by paper tubes, etc. The potted seedlings that are placed in the mud have a dog's resistance to movement through the mud, which results in the potted seedlings tilting forward.

Due to the low temperature at the time of planting, seedlings planted in pots on a slope have a long period of about 15 days or more for the root hairs of the seedlings, whose upper part of the bed is surrounded by a paper tube, to come out to the sides. The mud surrounding the paper tube becomes hard and cannot stand upright, which poses a problem for growth.

The natural inclination of potted seedlings, etc. to the front side when moving through the mud, as mentioned above, is greater in planting fields where the resistance to movement through the mud is high, and smaller in planting fields where the resistance to movement through the mud is small. , a new problem arises in that it is not constant due to variations, and it becomes extremely difficult to correct the planting bed in the vertical direction.

An object of the present invention is to solve the above-mentioned problems and provide a seedling planting device capable of planting divided seedlings such as pot seedlings in an upright manner.

The seedling planting device of the rice transplanter of the present invention, which achieves the above purpose, moves a planting spatula that covers the front surface of the seedbed of the divided seedlings, which is disposed opposite to the support claw that supports the upper part of the seedbed of the divided seedlings, from the supporting surface of the divided seedling bed. The lower part is extended to form a curved part toward the front, and after forming a planting groove and a front groove deeper than the planting groove with the descending trajectory drawn by the lower end of the planting spatula, the split seedlings are pushed out. It is characterized in that it is configured to ascend, and the ascending locus of the planting spatula that rises from the front groove is configured to be a correction path that corrects the divided seedling posture located in the planting groove approximately vertically. .

Hereinafter, the present invention will be explained in detail with reference to embodiments shown in the drawings.

In the figure, 1 is pivotally supported so that the intermediate part A draws a circular locus opening, the front end pivot part C is provided so as to draw a reciprocating circular arc locus 2, and the rear end is equipped with a rod 3 that moves up and down.
This is a regular planting rod for mat seedlings, which has a claw attachment part at the rear of the axis of the rod 3.

Behind this planting rod 1, there is a seedling take-out lower which the planting rod faces, which supports a seedling loading table 6 that moves back and forth in the lateral direction perpendicular to the direction of movement of the rice transplanter main body as shown by the white arrow in Fig. 1. It is installed at an angle so that it is lower and the rear side is higher.

This seedling mounting table 6 is sized to hold normal mat seedlings (width 280 mm x length 580 mm), so there are 20 unit pot seedlings 5 in the horizontal direction within this seedling placing table 6. , 42 pot group seedlings each having a rectangular shape as a whole are placed in the pot, which are glued in the vertical direction.

A support claw 2 which pierces the seedbed of a unit pot seedling 5 from above and supports the upper part of the seedbed of the potted seedling 5 is detachably fixed to the nail attachment part of the planting rod 1.

These support claws 2 are provided in pairs on the left and right, and have a front edge 2a on the rod 3 side.
is formed into a straight line that is perpendicular to the upper surface 5a of the potted seedling 5 when dividing the seedling, and the trailing edge 2b is formed into a tapered shape that is inclined at an angle of θ toward the rear side as it goes upward from the lower end.

Therefore, as the support claws 2 penetrate into the seedbed of the potted seedlings 5, the potted seedlings 5 are forced from side to side toward the collective potted seedlings.

A planting spatula 4 is removably fixed with a nut via a threaded part provided at the lower end of a rod 3 of a planting rod 1.

This planting spatula 4 is configured to have a support surface along the front side of the potted seedlings so as to support the front side of the potted seedlings 5 facing the seedling take-out lower part of the seedling mounting table 6 when dividing the seedlings, and also extends downward from this support surface position. is curved toward the front of the movement trajectory, and its lower end extends below the lower end of the support claw 2 and below the rear surface side of the lower end of the potted seedling 5.

Above the lower end of the support claw 2 of the planting spatula 4, a support piece 4a protrudes toward the linear front edge 2a of the support claw 2.

The claw attachment part of the planting rod 1 has a hole in the upper part and a semicircular locking part in the lower part. A hole formed in the support claw 2 by inserting a pin passing between the support claws 2 integrally formed with the support claw 2;
A bolt is passed through the hole above the claw attachment part, and the support claw 2 is removably fixed with a nut.

When dividing a group of potted seedlings placed on the seedling table 6 into 6 unit potted seedlings 5, the support nails 2 are thrust from above into the seedbed of the potted seedlings 5 facing the seedling removal lower; The supporting surface of the planting spatula 4 on the rod 3 side, which extends downward from the lower end of the claw 2, supports the front side of the potted seedling 5, so the lower end of the potted seedling when the supporting claw 2 penetrates into the seedbed is the seedling. The potted seedlings to be divided will not be tilted by protruding outward from the take-out lower.

When the support claw 2 pierces to a predetermined depth while the front side of the potted seedling 5 facing the seedling removal lower is supported by the planting spatula 4, the pot seedling top surface 5a is supported by the support piece 4a on the side of the planting spatula 4, As the planting rod 1 descends, the seedlings are divided into unit pot seedlings 5.

As the planting rod 1 descends), the rod 3 of the planting rod 1 gradually descends near the field surface, so the descending trajectory B drawn by the lower end of the planting spatula 4 is lower than the descending trajectory A of the support claw 2. Therefore, the lower end of the planting spatula 4 descends along a trajectory that defines the planting groove 9 and the front groove 9', which is deeper than the planting groove 9, so it is surrounded by a paper tube and has a lot of resistance to movement in the mud. The potted seedling 5 is transported along a downward trajectory to point C within the planting groove 9 formed by the lower part of the planting spatula 4 with only its front side protected by the planting spatula 4 of approximately the same width. As shown in Fig. 4, the movement locus of the lower end of the planting spatula 4 is B, so the planting spatula 4 passes through some areas above and below the floor of the potted seedlings 5 where no grooves have been made, and this C
At this point, the potted seedlings 5 are pushed out into the planting groove 9 while the upper part is pushed by the support piece 4a as the planting spatula 4 descends, and the potted seedlings are completely unrestricted to the rear side. 5, the lower part of the seedbed maintains its position in the planting groove 9, and only the upper part of the seedbed is dragged by the planting spatula 4, which moves to the front groove 9' ahead of the planting groove 9. The seedlings 5 are in an inclined position in which the entire bed is once laid down toward the front of the downward trajectory, as shown by the solid line in FIG.

However, when the planting spatula 4 next ascends from the end of its downward trajectory, the lower part of the planting spatula 4 curves toward the front of the descending trajectory B of the planting rod 2, as shown in FIG. Therefore, the lower end 4b of the potted seedling 5, which has been pushed out into the planting groove 9, is located further forward and lower than the lower front position 5a of the potted seedling 5, and returns further rearward from this front groove 9'. Since it ascends along a corrected path, the tip of the planting spatula 4 pushes back the upper part of the potted seedling 5 which is tilted forward by the corrected path returning backward from the front groove 9'. , the potted seedling 5 can be corrected to an upright state as shown by the chain line.

In this way, only the upper part of the seedbed 5 is supported and the rear side is not restricted at all.The slope of the entire seedbed 5 when moving through the mud is controlled by the front groove 9' which is deeper than the planting groove 9. Using the descending trajectory of the planting spatula 4, the range of variation is minimized by forcibly leaning forward. Since the upward trajectory of the planting spatula 4, which rises from the groove 9', is used to correct the position approximately vertically, it is possible to plant approximately vertically even in planting fields with different movement resistance in mud. There is an advantage that

The above-mentioned temporary backward movement of the planting spatula 4 when it is raised can be performed by a link mechanism that restricts the movement of the planting rod 1, and a cam mechanism can also be used if necessary.

The above example described the case of potted seedlings, but
The present invention can also be applied to the case where seedlings are separated from a group of seedlings in which unit nurseries are combined and planted into unit nurseries.

As described above, according to the seedling planting device of the present invention, the planting spatula that covers the front surface of the seedbed for divided seedlings, which is disposed opposite to the support claw that supports the upper part of the seedbed for divided seedlings, is placed higher than the supporting surface of the divided seedling bed. The lower part is extended to form a curved part toward the front, and after forming a planting groove and a front groove deeper than the planting groove with the descending trajectory drawn by the lower end of the planting spatula, the split seedlings are pushed out and raised. At the same time, the ascending locus of the planting spatula that rises from the front groove is configured to be a correction path that corrects the divided seedling posture located in the planting groove almost vertically, so that only the upper part of the seedbed becomes a support claw. Even with split seedlings that are supported and move through the mud without any restriction to the rear, the entire seedbed can be covered by using the descending locus of the planting spat that moves into the front trench, which is deeper than the planting trench. By forcing the seedbed to tilt forward, it is possible to minimize variations in the slope of the seedbed in fields with different mud movement resistance.

Furthermore, a seedbed that is tilted forward due to the descending trajectory of the planting spatula can be corrected to a nearly vertical posture by using the ascending trajectory of the planting spatula, which rises from the front trench, which is deeper than the planting groove. .

Therefore, even split seedlings in which only the upper part of the seedbed is supported can be planted substantially perpendicularly to the field surface.

[Brief explanation of the drawing]

Figure 1 is a diagram explaining the situation of seedling planting using the device of the present invention, Figure 2 is a side view of the planting rod portion of the device, Figure 3 is a front view, and Figure 4 is a circle of the device. This is a diagram explaining the situation of planting seedlings on the surface. 1... Planting rod, 2... Support claw, 3...
... Rod, 4 ... Planted wrasses, 5 ...
...Pot seedling, 6...Seedling mounting stand, D...
・Correction route.

Claims (1)

[Scope of utility model registration request] A planting spatula that covers the front surface of the seedbed of the divided seedlings, which is arranged opposite to the supporting nails that support the upper part of the seedbed of the divided seedlings, is formed into a curved part extending downward from the supporting surface of the divided seedling bed and facing forward. After forming a planting groove and a front groove deeper than the planting groove with the descending trajectory drawn by the lower end of the planting spatula, the structure is configured so that the split seedlings are pushed out and raised, and the planting spatula rises from the front groove. A seedling planting device for a rice transplanter, characterized in that the ascending trajectory of the seedling is configured to be a correction path for substantially vertically correcting the posture of the divided seedlings located in the planting groove.