JPS60221008A - Seedling planter of rice planter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seedling planting device for dividing seedlings one by one from the seedling man 1 on the seedling table and then planting the seedlings in a field in a rice transplanter.

Conventionally, this type of seedling planting device was developed by, for example, the Japanese Patent Publication No. 49-2776.
As described in Publication No. 2, the planting with a split claw at the tip connects the base end of the rod to the fuselage side via the fan link, while the planting connects the middle part of the rod to the engine. The planting rod was pivoted to the tip of a crank fixed to a nail shaft that was rotationally driven, and the rotation of the crank caused the planting rod to swing up and down so that the tips of the split nails traced a closed loop trajectory.

However, compared to the previous rotary set described in, for example, Publication No. 33-18922, this conventional vertically swinging type seedling planting device uses split claws attached to the rod to place the seedlings. It moves up and down while facing the direction of the table, so
Although the divided claws have the advantage of allowing the seedlings taken out from the seedling stand to be planted almost vertically on the field, compared to the rotary set described above, vibrations occur during planting due to the violent up-and-down movement of the rods. Moreover, this vibration increases in proportion to the speed of the up-and-down movement, and because it is possible to plant only one seedling per same up-and-down movement, that is, per crank rotation, it is difficult to plant. It was not possible to make the speed faster.

Therefore, the present inventor filed an earlier patent application (Japanese Patent Application No. 58-175).
No. 091), the rotary set is used as the basis, and multiple plantings attached to the rotating body are arranged so that the tips of the split claws on the rod can pivot vertically while facing the direction of the seedling stand. By configuring this, we proposed a seedling planting device that has the features of both a rotary set seedling planting device and a vertically swinging seedling planting device.

The present invention follows the idea of this prior application and also makes this seedling planting device smaller and lighter.

For this reason, the present invention fixes a rotating body to a rotating shaft that is supported horizontally on the body of a rice transplanter and substantially parallel to the seedling platform, and that receives power from a power source, and is attached to the rotating body. Planting at a position a suitable distance away from the rotating shaft in the radial direction and equally distributed in the circumferential direction of the rotating body, so that it rotates once in the direction opposite to the rotational direction of the rotating body during one rotation of the rotating body. has a shaft pivoted parallel to the rotary wheel, and each of the plantings is mounted on the shaft with a split claw extending in the direction of the seedling stand, while a rod is attached to the shaft at its base; When viewed from above, the tips of the split claws on the rod are planted so that they are appropriately sized offset from the base of the rod in the axial direction of the rotating shaft.

The present invention will be explained below with reference to drawings of embodiments. In the drawings, l is a transmission case in the body of a rice transplanter, and on the side of the transmission case 1, a boss body 2 is oriented horizontally and approximately parallel to the seedling platform lO. A rotating shaft 3 that protrudes and is rotationally driven by transmission of power from an engine (not shown) mounted on the body of the rice transplanter is inserted into the boss body 2. An oval and hollow rotary body 4 is fitted into the protruding end of the rotary body 4, and the rotary body 4 is shaped like an arrow A in a side view.
It is configured to be rotated in the right direction.

A sun gear 5 is disposed at the center of the rotary body 4 and is rotatably fitted into the boss body 2 and rotatable with respect to the rotary body 4. 1 by appropriate rotational phase adjusting means (not shown).

The left and right ends of the rotating body 4 have a distance (L) from the rotating shaft 3.
) is at the same position, a support shaft 6 is supported parallel to the rotating shaft 3 and non-rotatably with respect to the rotating body 4, and a hollow plant is placed on the support shaft 6 so that the shaft 7 is rotatably supported. One end of the shaft 7 protrudes to the outside of the rotating body 4, and each planting shaft has a dividing claw 9 extending toward the seedling stand 10 at the protruding end of the shaft. For planting, a rod 8 is attached at its base 8a, while an intermediate shaft 11 is placed in the rotating body 4 at a position between the rotating shaft 3 and each planting shaft 7, and is rotatable parallel to both shafts. An intermediate gear 12 is fitted onto each intermediate shaft 11, which meshes with the sun gear 5 and has the same number of teeth as the sun gear 5.

An interlocking gear 13 having the same number of teeth as the intermediate gear 12 is fitted onto the intermediate shaft 11, while an interlocking gear 13 having the same number of teeth as the interlocking gear 13 on the intermediate shaft 11 is fitted onto the planting shaft 7. The intermediate shaft 11 and the planting shaft 7 are interlocked and connected by the interlocking floats 13 and 14, and the planting is performed by one rotation of the rotating body 4. The attachment is configured such that the shaft 7 rotates once in the direction opposite to the rotational direction of the rotating body 4, while the rod 8 of each planting is bent in a dogleg shape as shown in FIG. 2 in plan view, or As shown in FIG. 5, each divided claw 9 is bent in a dogleg shape in a plan view.
When the tip end 9a of each split claw 9 is viewed from above, each planting has a rod 8
Appropriate dimension (S) in the axial direction of the rotating shaft 3 with respect to the base 8a of
(However, in the embodiments shown in FIGS. 1 and 2, a pusher 17 is provided for pushing the seedlings into the field at the lower descending limit of the dividing claw 9. , FIG. 5 shows the case where no pusher is provided for the dividing claw 9).

In this configuration, when the rotating body 4 revolves in the right direction of arrow A with its rotating shaft 3, the intermediate gear 12 meshing with the sun gear 5, which cannot rotate with respect to the transmission case 1, rotates as the rotating body 4 revolves. , the planting axis 7 interlocked with this intermediate gear 12 through interlocking gears 13 and 14 rotates in the right direction of arrow B by the same rotation angle as the rotation angle of its revolution, and the planting shaft 7 rotates in the direction of the arrow B by the rotation angle of the intermediate gear 12. Since it rotates in the left direction of C, that is, in the opposite direction to the revolving direction of the rotating body 4, the rod 8 is attached to the shaft 7. While keeping the posture facing the direction of the table 10, rotate the rotation axis 3.
During this turning movement, when descending from top to bottom on the side facing the seedling platform 10, the tip fils9a of the dividing claw 9 moves from the seedling cloak on the seedling platform 10. After dividing only one seedling, it is planted in the l1TiI scene 15 near its lower limit of descent, after which it rises above the field scene 15.

In this case, each planting is shifted by an appropriate dimension (S) in the axial direction of the rotating shaft 3 with respect to the base 8a of the rod 8 when the tip 9a of each split claw 9 is viewed from above.
For planting on the side closer to the seedling stand 10, the rod 8 descends toward the field scene 15, while for planting on the side farther from the seedling stand 10, as the rod 8 rises from the field scene 15, the rod 8 descends. Since it is possible to avoid collision between the base 8a of the rod 8 for attaching and the tip 9a of the dividing claw 9 of the rod 8 for ascending planting, the rotating shaft 3 can be avoided.
For each planting, the inter-shaft hole m (L) between the shafts 7 is shortened so that the base 8a of the rod 8 and the tip 9a of the splitting claw 9 overlap each other when viewed from the front in FIG. It is possible.

In addition, the interlocking gears 13 and 14 having the same number of teeth that interlock and connect the intermediate shaft 11 and the planting shaft 7 are connected to the center of each of these gears (
0) from the center of rotation of each axis 11.7.
If the eccentric gear is configured by e), the rotating body 4
The rotation of the shaft 7 in the left direction is caused by the rotation of the shaft 7 in the right direction.
Due to the difference in diameter, the rotation speed of the rotating body 4 will be faster or slower, so the rotation of the planting axis 7 to the left will be slower than the rotation of the rotating body 4. The time is
Planting occurs at the time when the axis 7 moves downward as it approaches the field scene 15 on rod 8, when the rotation of axis 7 to the left becomes faster, and when planting increases as it approaches the upper limit of the rise on rod 8. By setting these to correspond to the following, each planting rod 8 rotates on its own axis to the left behind the revolution of the rotating body 4 when descending to approach the field scene 15, and its posture is downward. change,
When it approaches the upper limit of its ascent, it moves further to the left than the revolution of the rotating body 4, rotates on its own, and changes its attitude upward.
In each planting, the closed loop of the movement locus of the tip 9a of the dividing claw 9 of the rod 8 becomes a closed loop curve 16 in the shape of an ellipse elongated in the vertical direction, as shown by the two-dot chain line in FIG.

In the above embodiment, an M star gear mechanism consisting of a sun gear 5, an intermediate float 12, and interlocking gears 13 and 14 is used as a means for planting the shaft 7 to make one rotation in the opposite direction with one rotation of the rotating body 4. However, the sun gear 5 is replaced with a pulley,
The planting shaft 7 may rotate once in the opposite direction for each rotation of the rotating body 4 by other means, such as by transmitting a cross-belt between this pulley and the planting shaft 7. Needless to say, the planting rod 8 is the same as that in Example 2 above.
It is not limited to the number of pieces, but may be arbitrarily divided into three or more pieces equally divided in the circumferential direction.

As described above, the present invention fixes a rotating body to a rotating shaft that is supported horizontally on the body of a rice transplanter and substantially parallel to the seedling platform, and that receives power from a power source. At a position radially away from the rotating shaft to which it is attached by an appropriate amount of path fit, and at equally divided positions in the rotational circumferential direction of the rotating body, so as to rotate once in the direction opposite to the rotational direction of the rotating body during one rotation of the rotating body. Each planted plant has a shaft supported parallel to the rotational axis, and each planted plant has a shaft supported on the shaft,
In the case of planting with split claws extending in the direction of the seedling platform, the rod is attached at its base, so that each planting provided on one rotating body has a rod attached to it, unlike in the case of a vertically swinging seedling planting device. Similarly, since it is possible to rotate vertically while facing the direction of the seedling platform, if multiple seedlings are planted in a -row seedling planting row, the vibration will increase in the future due to the use of the rod. It can be done at high speed without any effort, and can significantly improve the efficiency of rice planting work.

Moreover, in the present invention, each planting is performed by appropriately shifting the dimensions of the tips of the split claws on the rod in the axial direction of the rotating shaft with respect to the base of the rod when viewed in plan. The distance between the rotating shaft and each planting shaft can be shortened while avoiding collision interference with the base of the rod, making it possible to reduce the size and weight of the seedling planting device. has.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view, FIG. 2 is a plan view, FIG. 3 is an enlarged cross-sectional view taken along line mm of FIG.
FIG. 5 is a plan view of another embodiment. 1...Transmission case, 3...Rotating shaft, 4...
Rotating body, 5... Sun float, 7... Planting axis, 8
... Planting is at the base of the stem, 8a... Planting is at the base of the stem, 9.
...Split claw, 9a...Tip of split claw, 10...
... Seedling stand, 11... Intermediate shaft, 12... Intermediate gear, 13.14... Interlocking float. Patent applicant Yanmar Agricultural Machinery Co., Ltd.

Claims (1)

[Claims] (1) A rotating body is fixed to a rotating shaft that is supported horizontally on the body of the rice transplanter and substantially parallel to the seedling stand, and that receives power from a power source, and the rotating shaft to which this is attached is attached to the rotating body. Planting is carried out at a position radially away from the body by an appropriate pressure of 81t and at equally divided locations in the rotational circumferential direction of the rotating body, so that it rotates once in the direction opposite to the rotational direction of the rotating body during one rotation of the rotating body. A shaft is supported parallel to the rotational axis, and each planting shaft is provided with a split claw extending in the direction of the seedling stand. A seedling planting device of a 111 planter, characterized in that when viewed from above, the tips of the split claws are appropriately dimensionally shifted in the axial direction of the rotating shaft with respect to the base of the stem.