JPH0233461Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a rice transplanter for transplanting seedlings into a plowed field.

(b) Prior Art Conventionally, in a rice transplanter equipped with a center float and side floats as shown in Fig. 4, only the front portions of these floats were made to protrude laterally, and the rear portions were extended rearward approximately in parallel. However, with this type of float, the flow of muddy water suddenly flows toward the side of the float after passing the protrusion at the front, so it is difficult to plant seedlings immediately after the protrusion. There was a drawback to defeating him.

In order to overcome these drawbacks, Japanese Utility Model Publication No. 55-34735 proposed a device in which the center float and the side floats are tapered from the middle to the rear.

(c) Problems to be solved by the invention The invention described in the above-mentioned Japanese Utility Model Publication No. 55-34735 prevents the mud pushed out by the front part of the float from flowing into the planting position at a steep angle. Although the seedlings were no longer pushed down by muddy water flow, the planting rods were not able to level the planting position of the seedlings, resulting in seedlings being planted deeply in high places or shallowly in low places. There were some shortcomings.

In addition, the purpose of the rice transplanter float is not only to level the planting position, but also to share and support part of the weight of the planting device, but the width is narrow and the supporting capacity is reduced. If the length is increased in order to increase the supporting force, another drawback arises in that the maneuverability of the aircraft deteriorates.

Furthermore, in order to increase the supporting force and even out the planting position, only the front part of the float can be made to protrude to the side and the distance between the adjacent floats can be narrowed.
While traveling, mud builds up and accumulates at the front of these floats, which falls to the planting position at the rear, creating a new drawback that obstructs planting.

(d) Means for solving the problems The present invention aims to solve the above-mentioned drawbacks. By doing so, the planting position can be leveled at the front end of the center float, but the spacing between the floats can be reduced. It is narrowed to increase supporting capacity, and there is no turbulent flow of mud from the center float side in the planting area.
This device is characterized in that the flow velocity of muddy water can be reduced by the recessed portions of the side floats.

(e) Function When the planting device plants seedlings in the surrogate field, the area near the front end of the intermediate center float corresponding to the planting position can be leveled, and the temporary float can be brought closer and supported. Even if we try to increase the force, the muddy water and mud on the center float side will move away from the planted seedlings along the tapered surface extending from near the front end to the planting area, and the concave part of the side float on the center float side will cause the separation of the planted seedlings. The width of the flow path for muddy water is expanded from the front part, reducing the flow velocity, and even if muddy soil accumulated on the front part of the side float falls, it falls into the recess and falls into the planting part. Never.

(f) Example An example of the present invention will be explained with reference to the drawings.
Reference numeral 1 denotes a body of a traveling vehicle having left and right front wheels and rear wheels 2, 2, and at the rear thereof a seedling platform 4 supported on a planting transmission case 3 so as to be movable laterally;
a plurality of planting rods 5 for scraping out pine seedlings one by one and planting them on the rice field; the planting transmission case 3;
Center float 6 connected to the bottom of the
and a planting device 8 consisting of side floats 7, 7, etc.
is upper link 9' and lower link 10, 10
The planting device 8 is raised and lowered by a hydraulic cylinder 11 connected to an upper link 9'.

As shown in FIG. 1, the center float 6 has a tapered shape with a narrowed rear end from near the front end to the rear end, and has a center back groove 6a on the bottom surface and a groove on both sides of the front half. (Excluding the front end) Side grooves 6b, 6 whose outer side is open on the lower surface
b, and both sides of the front protrude outward from the area corresponding to the planting position A.

In addition, the side float 7 has a protrusion 7a on the outer front portion for leveling the area corresponding to the side planting position B, and the side back groove 6b on the side of the center float 6.
It is provided with a notch 9 extending from a position facing the intermediate part of A to a part facing the planting position A, and the notch 9
The rear end has a gentle slope 9a, the bottom has a central groove 7b as shown in FIGS. 1 and 2, and the outside of the front part has a shallow side groove 7c following the central groove 7b. It has been formed.

When planting while moving the aforementioned rice transplanter forward, the weight of the planting device 8 is mainly due to the body 1 of the traveling vehicle.
However, the center float 6 and side floats 7, 7 slide on the mud surface while sharing and supporting part of the weight, and the center float 6
The left and right planting positions A, A are leveled at the front part of the plant, and the protrusions 7a, 7a of the side floats 7, 7 level the side planting positions B, B.

The muddy soil and muddy water that have flowed between the center float 6 and the side floats 7, 7 flow from the front end of the center float 6 through the expanded channel formed by the tapered side surface, gradually decreasing the flow velocity. On the center float 6 side, mud, etc. flows along its tapered side surface as shown by arrow a without causing turbulence, and on the side float 7 side, at planting position A, mud, etc. also flows into the notch 9. The flow rate is rapidly reduced until the planting position is reached to prevent the planted seedlings from lodging. At the rear of the notch 9, the rear end becomes a gentle slope 9a and the distance b to the planting position A is Coupled with the fact that the center float 6 is larger than that of the center float 6, the planted seedlings will not fall over, and the groove 6 on the side back of the center float 6
b and 6b expand the mud flow path width and contribute to lowering the flow velocity.

Moreover, in the outer part, seedlings are planted in side planting parts B, B, where the protruding parts of the side floats 7, 7 are leveled.

(g) Effects of the invention Since the present invention is constructed as described above, the supporting force is increased in the wider part of the center float 6 at the front than the planting parts A, A, and the part corresponding to the planting parts A, A is increased. Furthermore, by making the rear part of the side floats 7, 7 wider than the part where the cutout part 9 is located, the supporting force can be increased.

In this way, although the center float 6 and the side floats 7, 7 have sufficient supporting force and are capable of leveling the planting position, the amount of water that flows between the front ends of the center float 6 and the side floats 7, 7. Mud soil and muddy water diffuse along the tapered surface on the center float 6 side and flow in an orderly manner without causing turbulence, and on the side floats 7, 7 side at the planting position A, the flow speed rapidly increases due to the notches 9. To prevent seedlings to be planted and already planted seedlings to be pushed down by turbulent flow of muddy soil and muddy water.

Moreover, even if mud rides on and accumulates on the front portion of the side floats 7, 7 on the side of the center float 6 and sometimes falls, it will not fall into the notch 9 and become an obstacle to planting.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Figure 1 is a plan view of the main parts, Figure 2 is a sectional view taken along line X-X of the side float, Figure 3 is a side view of the planting device attached to the rear of the vehicle, and Figure 4 is a plan view of the conventional example. It is. 5... Planting rod, 6... Center float, 6b
... Side back groove, 7 ... Side float, 8 ... Planting device, 9 ... Notch, A ... Planting position.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A center float 6 and side floats 7 are attached to the lower part of the machine frame, and the front part of the center float 6 is extended to both sides to a part corresponding to the planting position. In the rice transplanter, the center float 6 is configured to have a tapered shape with a narrow rear width from near the front end to the rear end, and the side surface of the side float 7 facing the center float 6 is arranged at least at the planting position A from the front side. A float for a rice transplanter characterized by having a notch extending over a portion facing the. (2) A float for a rice transplanter according to claim 1, wherein the rear end of the notch 9 of the side float 7 is formed into a gentle slope 9a.