JPS60244216A - Seedling planting apparatus 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 a seedling mat on a seedling platform in a rice transplanter and then planting the seedlings in a field.

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, this conventional vertically swinging type seedling planting device is different from the previous rotary set described in, for example, Publication No. 3F-18922, in which split claws attached to the rod are used to place the seedlings. Since it moves up and down while facing the direction of the table, it has the advantage of being able to take out the seedlings from the seedling table using the split claw and plant them almost vertically in the field. Vibrations are generated due to the violent up-and-down movement of the rod, and this vibration increases in proportion to the speed of the up-and-down movement. Although seedlings can only be planted once per rotation of the crank, the speed of planting cannot be increased.

Therefore, the inventor of the present invention proposed the patent amount l1l (Japanese Patent Application No. 58-1
No. 75091), which is based on a rotary set, and the tips of the split claws of the two left and right planting rods attached to the rotating body rotate vertically while always facing the direction of the seedling stand. 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 is directed to the seedling planting device of the prior invention, in which the seedlings are unnecessarily divided from the seedling mat when the seedling planting is stopped. If you try to stop the rotation at one phase position, you will have to use the rod to cut and divide the seedlings twice in order to plant both seedlings from the seedling mantle on the seedling stand. This reduces unnecessary cutting and division of seedlings.

For this reason, the present invention fixes a rotating body to a rotating shaft that is horizontally supported on the body of a rice transplanter and substantially parallel to the seedling platform, and that receives power from a power source. At the left and right end positions, an appropriate distance away from the rotation axis in the radial direction,
A camshaft is non-rotatably fixed in parallel with the rotational shaft, and each of the camshafts has a hollow planting shaft that rotates once in the direction opposite to the rotational direction of the rotational body during one rotation of the rotary body. The two plantings are fitted with a shaft, and the planting with split claws extending in the direction of the seedling stand is fitted with a rod, while the rotating shaft or the power transmission shaft to the rotating shaft is fitted with a rod. , a driving clutch interlocked with the power source side is rotatably fitted, and a driven clutch that can mesh with the driving clutch is fitted non-rotatably and slidably, while the transmission case side housing these is fitted with: When the driven clutch is slid in a direction away from the main clutch,
The driven clutch is provided with a fixed clutch that engages at a half-rotation phase position during one rotation of the rotating body.

When the driven clutch is slid in a direction away from the driving clutch when stopping seedling planting, the driven clutch is disengaged from the driving clutch, and power transmission to the rotating body is cut off, and almost at the same time, the driven clutch By engaging the fixed clutch, the rotation of the rotating body is stopped. In this case, the engagement of the driven clutch with the fixed clutch is
If there is only one position during one rotation, when the rotating body stops rotating, the rotating body will rotate close to the highest rotation, so both rods attached to this rotating body will have both rods touch the seedling stand. However, in the present invention, the engagement of the driven flange with the fixed flange is made in half a rotation in one revolution of the rotating body. phase position, i.e. 18 during one rotation.
Since this is done at two locations 0 degrees apart, when the rotating body stops rotating, the rotating body will only rotate half a rotation at most, and therefore, at most one planting will only involve the rod passing through the seedling stand. Therefore, the unnecessary cutting and dividing of seedlings from the seedling mat on the seedling stand can be limited to only one seedling.

The present invention will be described below with reference to drawings of embodiments. In the drawings, reference numeral 1 denotes a transmission case in the body of a rice transplanter, and on both left and right sides of the transmission case I, boss bodies 2 are horizontally oriented, and there is a seedling stand 10. A rotary shaft 3 that protrudes in parallel and is rotatably driven by power transmission from an engine (not shown) mounted on the body of the rice transplanter is inserted into both the boss bodies 2. Oval and hollow rotating bodies 4 are fitted onto the protruding ends of the boss body 2, respectively, and both rotating bodies 4 are configured to be rotated in the right direction in the direction of the arrow when viewed from the side. . A sun gear 5 rotatably fitted into the boss body 2 and rotatable relative to the rotary body 4 is disposed at the center of both of the rotary bodies 4.
is non-rotatably locked to the transmission case 1 by appropriate rotational phase adjusting means (not shown).

A distance Il from the rotation axis 3 is provided at both left and right ends of the two rotating bodies 4.
A spindle 6 is supported parallel to the rotating shaft 3 and non-rotatably with respect to the rotating body 4 at a position where l (L) is equal, and when planting a hollow plant on the spindle 6, the shaft 7 is rotated. One end of the shaft 7 protrudes to the outside of the rotating body 4, and each planting has a split nail on the protruding end of the shaft so as to extend toward the seedling stand IO. The plantings with 9 are fitted with rods 8, while in the rotating body 4, the rotating shaft 3 and each planting are located at an intermediate position between the shaft 7.

An intermediate shaft 11 is rotatably supported in parallel with both shafts, and an intermediate gear 12 that meshes with the sun gear 5 and has the same number of teeth as the sun gear 5 is fitted onto each intermediate shaft 11. .

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 connected to the interlocking gear +3. By interlocking and connecting at i4, one rotation of the rotary body 4 causes the planting shaft 7 to rotate once in the direction opposite to the rotational direction of the rotary body 4.

On the other hand, the rotating shaft 3 in the transmission case 1 is provided with a stopping mechanism 15 that also serves as a clutch.The stopping mechanism 15 that also serves as a clutch is rotatable on the rotating shaft 3 as shown in FIGS. 5 and 6. A main drive clutch 19 is fitted on the shaft 16 from the engine (not shown) through bevel gears 17 and 18, and a drive clutch 19 is fitted on the rotating shaft 3 in a non-rotatable/slidable manner by spline fitting or the like. It consists of a driven clutch 20 and a fixed clutch 21 fixed to the inner surface of the transmission case 1. The driven clutch 20 is always urged by a spring 22 to be engaged with the main driving clutch 19, and this engagement causes the rotating shaft 3 On the other hand, the shifter lever 23 that engages with the driven clutch 20 is installed at an appropriate location such as the handle of the rice transplanter. When connected and planted, when the driven clutch 20 is slid in the direction away from the main drive clutch 19 by operating the operating lever, the engagement with the main drive clutch 19 is disengaged, and power transmission to the rotating shaft 3 is cut off, almost simultaneously. , the driven clutch 20 is the fixed clutch 2
1 to stop the rotation of the rotating shaft 3, and when the driven clutch 20 and the fixed clutch 21 are engaged, a pair of pawls 20 on the driven clutch 20 side
a and 20b are a pair of pawls 2 on the fixed clutch 21 side
1a and 21b, as shown in FIG. 6, they are constructed so as to mesh only at a half-rotation phase position in which the rotary body 2 becomes horizontal during one rotation of the rotary body 2.

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 1o, the tip of the dividing claw 9 moves from the seedling mantle on the seedling platform 10. After one seedling is cut and divided, it is planted in the field area 25 near its lower limit of descent, after which it rises above the field area 25.

In order to stop seedling planting during directional turning during rice planting work, the driven clutch 20 is slid in the direction away from the main drive clutch 19 by operating the operating lever.
At approximately the same time that the driven clutch 20 is engaged with the fixed clutch 21, the rotation of the rotating body 2 is stopped and seedling planting is stopped. . In this case, the engagement of the driven clutch 20 with the fixed clutch 21 is at a half-rotation phase position where the rotating body 2 becomes horizontal during one rotation of the rotating body 2,
In other words, since the rotation is performed only at two locations that are 180 degrees apart during one rotation, when the rotating body 2 stops rotating, the rotating body 2 only makes a maximum of half a rotation, and both the shafts attached to the rotating body 2 Attached is rod 8, and one of the 8 plants is rod 8.
This allows the split claws 9 to pass through the seedling stand 10.

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 planting is caused by the rotation of the shaft 7 to the left due to the rotation of the shaft 7 to the right.
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 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 approaching the upper limit of ascent, the rotating body 4 moves further to the left than the revolution, rotates on its own, and changes its posture upward, so the closed loop of the motion trajectory of the tip 9a of the split claw 9 of the rod 8 for each planting is As shown by the two-dot chain line in FIG. 1, the result is a vertically elongated elliptical closed loop curve 16.

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,
Needless to say, it is also possible to make one rotation of the rotating body 4 by using other means, such as using a heald transmission between this pulley and the shaft 7 for planting, and for planting, the shaft 7 may rotate once in the opposite direction. In addition, instead of providing the stop mechanism 15 that also serves as a clutch on the rotating shaft 3 as in the above embodiment, the rotating shaft 3
The stop mechanism 15 that also serves as the clutch is attached to the shaft for transmitting power to the
may be provided, and the fixed clutch 21 of the driven clutch 20
In the case of both plantings on the rotary body 4 as in the above-mentioned embodiment, the dividing claws 9.9 of the rods 8.8 are both positioned in the field area 25.
If you set it so that it is in a raised position, both split type 9,
9 can be prevented from being damaged, and the divided claws can be inspected and adjusted easily.

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. A camshaft is non-rotatably fixed in parallel to the rotational shaft at both left and right end positions at an appropriate distance in the radial direction from the rotational shaft to be attached. A hollow planting that rotates once in the opposite direction to the rotation direction is fitted with a shaft, and both plantings are fitted with a shaft, and a planting with a dividing claw extending in the direction of the seedling stand is fitted with a rod. By installing the , the two planting rods installed on one rotary body can be rotated vertically while keeping the rod facing the direction of the seedling stand, as in the case of a vertically swinging seedling planting device. Because of the ability to move, two seedlings can be planted in one seedling planting row at a high speed without increasing vibration in the future, and the efficiency of rice planting work can be significantly improved. .

Moreover, in the present invention, the rotating shaft or the power transmission shaft to the rotating shaft is rotatably fitted with a driving clutch that is interlocked with the power source, and a driven clutch that can be engaged with the driving clutch is fixed to the rotating shaft or the power transmission shaft to the rotating shaft. While these are slidably fitted, the transmission gamma side that accommodates them has a structure that, when the driven clutch is slid in a direction away from the main clutch, the driven clutch rotates half a rotation within one revolution of the rotating body. By providing a fixed clutch that engages at a phase position of , when seedling planting is stopped, the division claws of the rods of both planting rods on the rotary body can be prevented from passing through the seedling stand for the maximum number of times. This has the effect of reducing unnecessary cutting and division of seedlings when seedling planting is stopped.

[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, and FIG. 3 is an enlarged cross section taken along the line m-m of FIG.
4 is a cross-sectional view of mV-I' in FIG. 3; FIG. 5 is an enlarged view of the stop mechanism that also serves as a clutch; FIG.
It is a sectional view taken along Vl. 1...Transmission case, 3...Rotating shaft, 4...
・Rotating body, 5...sun gear, 7...planting axis,
8... Planting with stems, 9... Divided claws, 10...
Seedling stand, 11... intermediate shaft, 12... intermediate gear,
13.14... Interlocking gear, 15... Stop mechanism that also serves as a clutch, 19... Main drive clutch, 20...
- Driven clutch, 21... fixed clutch.

Claims (2)

[Claims] (1) A rotating body is fixed to a rotating shaft that is supported horizontally on the body of the rice transplanter and approximately parallel to the seedling stand, and that transmits power from a power source. A camshaft is non-rotatably fixed in parallel to the rotational shaft at both left and right end positions radially apart from the camshaft by an appropriate distance, and both camshafts include:
A hollow planting that rotates once in a direction opposite to the rotational direction of the rotating body during one rotation of the rotating body is fitted with a shaft, and both plantings extend around the shaft in the direction of the seedling stand. For planting with split claws, a rod is attached, and on the rotating shaft or the power transmission shaft to the rotating shaft, a driving clutch that is connected to the power source side is rotatably fitted, and the driving clutch is engaged with the driving clutch. A driven clutch is fitted in a non-rotatable but slidable manner, and on the transmission case side that accommodates these, when the driven clutch is slid in a direction away from the main clutch, the driven clutch is inserted into the rotating body. A seedling planting device for a rice transplanter, characterized in that a fixed clutch is provided that engages at a phase position of half a rotation during one rotation. (2) The position at which the driven clutch engages with the fixed clutch is set at a position where the split claws of the rods for both plantings on the rotating body are both elevated from the field surface. Seedling planting device of rice transplanter.