JPS60244215A - 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 cloak on a seedling stand 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, this conventional vertically swinging type seedling planting device differs from the previous rotary set 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 the direction of the rotary blade, it has the advantage of being able to take out the seedlings from the seedling stand using the split claw and plant them almost perpendicularly to the field. Vibration is 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. Since seedlings can only be planted once per rotation, the speed of planting cannot be increased.

Therefore, the inventor of the present invention proposed the patent application II (Japanese Patent Application No. 58-17
No. 5091), it is based on a rotary set, and is attached to a rotary body (for multiple plantings, the tip of the split claw on the rod is turned 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 in this seedling planting device, a plurality of seedlings are planted on a rod, and each planting device is equipped with a pushing tool for pushing the divided seedlings into the field using dividing claws on the rod. It is something to be worn.

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. Camshafts parallel to the rotational shaft are non-rotatably fixed at positions separated from the rotational shaft by an appropriate distance in the radial direction and at equally divided positions in the rotational circumferential direction of the rotating body, and each camshaft is provided with the The hollow-shaped planting device, which rotates once in the opposite direction to the rotating direction of the rotating body during one rotation of the rotating body, is fitted with a shaft, and the various attachments are divided into shafts extending in the direction of the seedling stand. A stem is attached to each of the plantings equipped with claws, and a guide shaft equipped with a pushing tool that moves up and down along the split claws in the stem is slid approximately parallel to the split claws. The proximal end of an extrusion lever for moving the guide shaft up and down is pivotally connected with a pin at a position above or below the cam shaft, while a cam is fixed to each of the cam shafts. Then, the extrusion lever is brought into contact with the outer peripheral surface of the cam so that the extrusion tool moves downward toward the tip of the split claw near the lower limit of the rod, and the extrusion lever is placed in contact with the center of the cam shaft. The line connecting the center of the proximal end pin of the lever is arranged substantially parallel to the axis of the guide shaft.

The present invention will be explained 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 the side surface of the transmission case 1, a boss body 2 is oriented horizontally and approximately parallel to the seedling platform 10. A rotary shaft 3 that protrudes and is rotationally driven by power transmission from an engine (not shown) mounted on the body of the rice transplanter is inserted into the boss body 2, and the boss body 2 of the rotary shaft 3 is inserted into the boss body 2. An oval and hollow rotating body 4 is fitted onto the protruding end of the rotary body 4, and the rotating body 4 is configured to be rotated to the right in the direction of the arrow 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.
), a camshaft 6 is supported parallel to the rotating shaft 3 and non-rotatably with respect to the rotary body 4, and a hollow plant is placed on the camshaft 6 so that the shaft 7 is rotatably supported. The planting is done on axis 7.
A hollow planting rod is provided with one end protruding outside the rotary body 4, and the protruding end of each planting shaft 7 is provided with a dividing claw 9 extending toward the seedling platform IO. 8 is attached at its base, while an intermediate shaft 11 is rotatably supported in the rotating body 4 at a position intermediate between the rotating shaft 3 and each planting shaft 7 in parallel with both shafts. 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 the 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 interlocked and connected by the interlocking gears 13 and 14, and the planting is performed by one rotation of the rotating body 4. The shaft 7 is configured so that it rotates once in the direction opposite to the direction of rotation of the rotating body 4.

On the other hand, for each hollow planting, one end of the camshaft 6 is inserted into the rod 8, and the cam 15 is fixed thereto.
is provided with a guide shaft 16 that extends approximately parallel to the dividing claw 9 and is slidable up and down, and a pushing tool 17 is fixed to the lower end of the guide shaft 16. Each planting is carried out within the rod 8. is provided with an extrusion lever 18, one end of which is connected to the guide shaft 16.
while engaging the slider 19 at the upper end of the lever 18 for pushing out.
A protrusion 21 is pivotally attached to the bottle 20 at a position above the camshaft 6, and a protrusion 21 protrudes from the lower surface of the extrusion lever 18.
The extrusion lever 18 is brought into contact with the outer circumferential surface of the cam 15 by the pressure of the spring 22, and the outer circumferential surface of the cam 15 is planted only when the rod 8 comes near its lower limit. It is configured in such a shape that it can be rotated downward by the force of the spring 22, and further,
The center of the camshaft 6 and the proximal pin 20 of the extrusion lever 18
The line 23 connecting the center of the guide shaft 16 is the axis 24 of the guide shaft 16.
It is arranged so that it is substantially parallel to the

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 to the left of C, that is, in the opposite direction to the revolving direction of the rotating body 4, the planting rod 8, which is attached to the shaft 7, has its dividing claws 9 attached to the seedling stand as shown in Fig. 1. 10, it rotates around the rotating shaft 3, and during this rotating movement, when the side facing the seedling stand 10 descends from top to bottom, the split claws 9 After dividing only one seedling from the seedling cloak on the seedling stand 10 at the tip of the seedling, it is planted in the field area 25 near the lower limit of descent, and then it is raised from the field area 25.

Then, while the rotating body 4 revolves in the right direction of arrow A,
Each planting comes into contact with the cam 15 of the camshaft 6 at the rod 8 as the rod 8 rotates in the left direction of arrow C with respect to the camshaft 6, that is, in the opposite direction to the revolution direction of the rotating body 4. The extrusion lever 18 for planting is activated by the cam 1 when the tip of the split claw 9 enters the field area 25 at the lower limit of the rod 8.
5 is rotated downward by the spring 22, so that the downward rotation of the extrusion lever 18 causes the extrusion tool 17 at the lower end of the guide shaft 16 to release the split claw as shown by the two-dot chain line in FIG. Move the seedlings down towards the tip of No. 9 and place them in the field scene 2.
5 - When this pushing-in planting is finished, the split claw 9 rises from the field scene 25 and at the same time, the pushing tool 17 returns to its original position from the tip of the split claw 9. be.

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.
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 revolution 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 so that each of them corresponds to change,
When approaching the upper limit of ascent, the rotating body 4 moves further to the left than its revolution, rotates on its own, and changes its posture upward, so the closed loop of the motion trajectory of the tip of the split claw 9 of the rod 8 for each planting is as follows: As shown by the two-dot chain line in FIG. 1, the result is an elliptical closed loop curve 26 elongated in the vertical direction.

In the above embodiment, a planetary gear mechanism consisting of a sun gear 5, an intermediate gear 12, and interlocking gears 13 and I4 is used as means for rotating the shaft 7 once in the opposite direction with one rotation of the rotating body 4. However, if the sun gear 5 is replaced with a pulley,
Needless to say, the rotation of the rotating body 4 may be made one rotation in the opposite direction by other means such as belt transmission between this pulley and the shaft 7 for planting, and the shaft 7 may be rotated once in the opposite direction for planting. In addition, the number of rods 8 for planting is not limited to two as in the above embodiment, but can be arbitrarily divided into three or more rods equally divided in the circumferential direction. As shown in Fig. 6, the base end pivot pin 20 of the extrusion lever 18
It may be provided at a lower position.

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 extending parallel to the rotational shaft is non-rotatably fixed at a position a suitable distance away from the rotational shaft to be attached in the radial direction and equally divided in the rotational circumferential direction of the rotating body, and each of the camshafts is The hollow-shaped planting which rotates once in the direction opposite to the rotational direction of the rotating body during one rotation of the rotating body is fitted with a shaft, and each planting is arranged in the direction of the seedling stand on the shaft. By attaching a rod to each planter with split nails that extend from one to the other, the rods can be attached to the seedling stand in the same manner as in the case of a conventional vertically swinging seedling planting device. Since it is possible to rotate vertically while facing the direction, planting multiple seedlings on a -row seedling planting row will not cause an increase in vibration due to the rod (it can be done at high speed). .

Moreover, in the present invention, each of the planting rods is provided with a guide shaft equipped with a pusher that moves up and down along the dividing nails in the planting rod so as to be slidable approximately parallel to the dividing nails, The base end of the k-th extrusion lever that moves the guide shaft up and down is pivotally attached to the upper part of the cam shaft with a pin, while a cam is fixed to each of the cam shafts, and the By touching the extrusion lever so that the extrusion tool moves downward toward the tip of the split claw when planting is near the lower limit of the rod, each planting is performed in the opposite direction of the rod with respect to the revolution of the rotating body. Utilizing the rotation of the seedlings, it is possible to force each seedling to be planted using rods.

Furthermore, in the present invention, the proximal end of the extrusion lever during forced planting is pivoted to the planting rod at the upper or lower position of the camshaft, and the center of the camshaft and the extrusion lever are connected to each other. By arranging the line connecting the center of the base end pin to be approximately parallel to the axis of the guide shaft, the height from the center of the cam shaft to the tip of the split claw is reduced as shown in Figures 5 and 6. Since the horizontal distance (X) and the horizontal distance (Y) from the center of the camshaft to the guide shaft can be shortened,
In forced planting, type planting allows the rod to be configured in a smaller size, which in turn has the effect of making the entire seedling planting device smaller and lighter.

[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 sectional view taken along the line m-m of FIG.
The figure is a cross-sectional view taken from IV-IV in Figure 3, and Figure 5 is a cross-sectional view of V in Figure 3.
-V enlarged sectional view, FIG. 6 is another embodiment diagram. 1...Transmission case, 3...Rotating shaft, 4...
Rotating body, 5...Sun gear, 6...Cam shaft, 7...
... Planting on a shaft, 8 ... Planting on a rod, 9 ... Split claw, 10 ... Seedling stand, 11 ... Intermediate shaft, 12.
...Intermediate gear, 13.14...Interlocking gear, 15.
...Cam, 16...Guide shaft, 17...Extrusion tool, 18...Extrusion lever, 20...Base end pin, 22...Spring. Patent applicant Yanmar Agricultural Machinery Co., Ltd.

Claims (1)

[Claims] (l) 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 the rotating body is attached. A camshaft parallel to the rotational shaft is non-rotatably fixed at a position radially away from the rotational body by an appropriate distance and equally divided in the circumferential direction of the rotational body, and each camshaft is attached to the rotational body. A shaft is fitted in the hollow planting which rotates once in the opposite direction to the direction of rotation during one rotation, and each planting has a dividing claw extending in the direction of the seedling platform on the shaft. A rod is attached to each of the planted rods, and a guide shaft equipped with a pushing tool that moves up and down along the dividing nails on the rod is slid approximately parallel to the dividing nails. The proximal end of an extrusion lever for moving the guide shaft up and down is pivoted with a pin at a position above or below the cam shaft, while a cam is fixed to each of the cam shafts. , the extrusion lever is placed on the outer peripheral surface of the cam,
For planting, the extrusion tool comes into contact with the dividing claw in a downward movement toward the tip of the rod near the lower limit, and the line connecting the center of the camshaft and the center of the proximal pin of the extrusion lever is aligned with the above-mentioned line. A seedling planting device for a rice transplanter, characterized in that it is arranged substantially parallel to the axis of a guide shaft.