JPH01199511A - Seedling transplantation apparatus of rice transplantation machine - Google Patents

Abstract

PURPOSE:To perform high-speed transplantation on a transplantation row with plural transplantation rams, by attaching plural transplantation rams to one rotary member and gyrating each transplantation ram in vertical direction keeping the posture directing toward a seedling holding table. CONSTITUTION:An elliptic rotary member 4 is fixed to a rotary shaft 3 rotated by power transmitted from an engine of a transplantation machine. Plural transplantation shafts 7 are pivoted to the circumference of the rotary member at equal intervals in the rotational circumferential direction and are maintained parallel to the rotary shaft 3. A planetary gear mechanism, etc., is provided in such a manner as to rotate in one revolution in opposite direction when the rotary member 4 is rotated in one revolution. A dividing claw 9 is made to extend toward the seedling holding table 10 by attaching a transplantation ram 8 to each transplantation shaft 7. The tip end part of the dividing claw 9 is staggered by a proper dimension S in the axial direction of the rotary shaft 3 from the base of the transplantation ram 8 when viewed from the top. The distance between the shafts 3 and 7 can be shortened by this structure.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a seedling planting device for dividing seedlings one by one from a seedling mat on a seedling platform in a rice transplanter and then planting the seedlings in a field. It is related to.

[Conventional technology and its problems]

Conventionally, this type of seedling planting device has been developed, for example, by Japanese Patent Publication No. 49-277.
As described in Publication No. 62, the planting with a split claw at the tip connects the base end of the rod to the aircraft side via the fan link, while the planting connects the middle part of the rod to the engine. The stem was pivoted to the tip of a crank fixed to a nail shaft that was rotated by the machine, and the rotation of the crank caused the planting rod to swing up and down so that the tips of its split nails traced a closed-loop trajectory. However, this conventional vertically swinging type seedling planting device differs from the previous rotary type described in, for example, Japanese Utility Model Publication No. 33-18922, in that the split claw attached to the rod is used as a seedling platform for planting. Since it moves up and down while facing in the direction of the rotary type, it has the advantage of being able to take out the seedlings from the seedling stand with the split claw and plant them almost vertically in the field. Vibration is generated due to the violent vertical movement of the rod, and this vibration increases in proportion to the speed of the vertical movement, and this vibration occurs per - times of vertical movement, that is, the crankshaft. Since it is possible to only plant seedlings once per revolution, it is not possible to speed up the planting process.

Therefore, the present inventor filed an earlier patent application (Japanese Patent Application No. 58-175).
No. 091) is based on a rotary system, in which multiple plants are attached to a rotating body so that the tips of the split claws on the rod can pivot vertically while facing the direction of the seedling stand. We proposed a seedling planting device that has the features of both a rotary type seedling planting device and a vertically swinging type seedling planting device.

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

[Means to solve the problem]

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 rotational axis, and each of the plantings has a rod attached to the shaft at its base, and a planting having a dividing claw extending in the direction of the seedling stand has a rod attached to the shaft; When viewed from above, the tips of the split claws on the rod are planted so that they are appropriately dimensionally shifted from the base of the rod in the axial direction of the rotating shaft.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawing, reference numeral 1 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 horizontally oriented and approximately parallel to the seedling platform 10. A rotary shaft 3 is inserted into the boss body 2 and is rotatably driven by power transmission from an engine (not shown) mounted on the body of the rice transplanter. An oval and hollow rotary body 4 is fitted into the protruding end from the rotor 4, and the rotary body 4 is configured to be rotated in the right direction of arrow A when viewed from the side.

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. Each planting has a rod 8 attached at its base 8a, while the rotary body 4 has a rotating shaft 3 and a shaft 7 for each planting.
An intermediate shaft 11 is rotatably supported parallel to the two shafts, and on each intermediate shaft 11 is an intermediate gear 12 that meshes with the sun gear 5 and has the same number of teeth as the sun gear 5. Insert.

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 gears 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 pushing tool 17 is provided for pushing the seedlings into the field at the lower limit of the split claw 9. , FIG. 5 shows the case where no pushing tool is provided for the dividing claw 9).

In this configuration, when the rotating body 4 revolves in the right direction of the arrow by 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. , rotates to the right of arrow B by the same rotation angle as that of its revolution. The planting shaft 7, which is interlocked with the intermediate gear 12 via the interlocking gears 13' and 14, moves to the left of arrow C, that is, to the rotating body 4, due to the rotation of the intermediate gear 12.
Since it rotates in the opposite direction to the direction of revolution, this planting is done on axis 7.
Particularly, during planting, the rod 8 rotates around the rotation axis 3 while keeping its divided claws 9 facing the direction of the seedling platform 10 as shown in FIG. During this turning movement, when descending from top to bottom on the side facing the seedling platform 10, only one seedling was split from the seedling cloak on the seedling platform 10 with the tip 9a of the dividing claw 9. Afterwards, they are planted in the field 15 near the lower limit of descent, and then rise above the field 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 distance (L) between the shafts 7 is shortened so that the base 8a of the planting rod 8 and the tip 9a of the dividing claw 9 overlap each other in the front view of 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 of the shafts 11 and 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.
The rotation speed of the rotating body 4 will be faster or slower depending on the difference in diameter, so the planting is done at a time when the leftward rotation of the axis 7 slows down relative to the revolution of the rotating body 4. but,
Planting occurs at the time when the axis 7 is rotating rapidly to the left, and the planting period is when the axis 7 moves upward as it approaches the upper limit of the rise of rod 8. By setting the rods 8 to correspond to each of , when descending to approach the field scene 15, each planting rod 8 rotates to the left later than the revolution of the rotating body 4, and its posture is downward. When approaching the upper limit of the 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, a planetary gear mechanism consisting of a sun gear 5, an intermediate gear 12, and interlocking gears 13 and 14 is used as means for rotating the shaft 7 once in the opposite direction with one rotation of the rotary body 4. However, if the sun gear 5 is replaced with a pulley,
The cross between this pulley and the planting shaft 7 is the bell 1 of the formula.
It goes without saying that the planting shaft 7 may rotate once in the opposite direction for each rotation of the rotating body 4 by other means such as transmission. However, it is not limited to this, but it is also possible to arbitrarily divide the number into three or more pieces equally divided in the circumferential direction.

[Action/effect of the invention]

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 suitable distance in the radial direction from the rotating shaft to which the rotating body is attached, and at equally divided positions in the rotational circumferential direction of the rotating body, so that the rotating body rotates once in the opposite direction of rotation during one rotation of the rotating body. Each of the planted plants has a shaft supported parallel to the rotational axis, and each of the planted plants has a split claw extending in the direction of the seedling stand, and a planting rod is attached to the base of the shaft. Each planting device installed on one rotating body can pivot vertically while keeping the rod facing the direction of the seedling stand, as in the case of the two-bottom swing type seedling planting device. By using rods, multiple seedlings can be planted at high speed without increasing vibration, and the efficiency of rice planting work can be significantly improved.

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 the drawing]

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 sectional view taken along the line m-m of FIG.
The figure is a sectional view taken along line IV-IV in FIG. 3, and FIG. 5 is a plan view of another embodiment. 1...Transmission case, 3...Rotating shaft, 4...
Rotating body, 5... Sun gear, 7... Planting axis, 8
... Planted at the base of the stem, 8a... Planted 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 gear.

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. A planting shaft is placed at a suitable distance in the radial direction from the plant and equally spaced in the circumferential direction of the rotating body, and is arranged to rotate once in the direction opposite to the rotational direction of the rotating body during one rotation of the rotating body. A planting rod that is supported in parallel with the rotating shaft and that is equipped with a split claw that extends in the direction of the seedling stand is attached to each planting shaft at its base, while the tip of the split claw in each of the planting rods is viewed in plan. A seedling planting device for a rice transplanter, characterized in that the axis of rotation is appropriately dimensionally shifted in the axial direction with respect to the base of the planting rod.