JPS60221009A - 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 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 includes, for example,
As described in Publication No. 22, there is a rotary set in which a rotating body is provided with a plurality of divided pawls, and
As described in Publication No. 9-27762, in the case of planting with a split claw at the tip, the base end of the rod is connected to the fuselage side via a fan link, while the planting has a splitting claw at the tip. It is a swinging type that is pivotally attached to the tip of a crank fixed to a claw shaft that is rotationally driven by an engine, and the rotation of the crank moves the stem up and down so that the tip of the split claw draws a closed loop trajectory. There was something.

The former type of rotary set has the feature that there is no vibration in the rotation of the rotating body and that it can be planted multiple times with one revolution of the rotating body, but on the other hand, the closed loop of the motion trajectory at the tip of each split claw has a large curvature. Because it is circular, the split claws tend to damage the leaves of the seedlings when they enter the seedling mantle, and after the seedlings are planted in the field, the split claws do not quickly escape from the seedlings after planting, so the seedlings are The latter oscillating type has drawbacks such as unstable planting posture, but the latter type of swinging type allows the closed loop of the movement locus at the tip of the split claw to be shaped into a vertically elongated ellipse, making it easier to use as a seedling mat. It is possible to reduce the damage to seedlings when dividing them, and after planting the seedlings in the field, the splitting claws quickly escape from the later seedlings, stabilizing the planting posture of the seedlings. On the other hand, when planting, vibrations are generated due to the rapid vertical movement of the stems, and this vibration increases in proportion to the speed of the vertical movement. Since only one seedling can be planted per up-and-down movement, or one rotation of the crank, the speed of planting cannot be increased.

The present invention provides a seedling planting device that has the features of both the rotary set seedling planting device and the swinging type seedling planting device. In other words, when planting a plurality of plants that are attached to a rotary set based on a rotary body, the tips of the dividing claws on the rod are shaped like vertically elongated ellipses, similar to the tips of the dividing claws in the swing-type seedling planting device. It is designed to draw a closed loop motion trajectory.

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 receives power from a power source,
A sun gear configured to be non-rotatable with respect to the machine body but rotatable with respect to the rotary body is disposed at the rotation center position of the rotary body, and the rotary body has a sun gear with a radius from the rotation axis to which it is attached. The planting shaft is supported parallel to the rotational axis at positions separated by an appropriate distance in the rotational direction of the rotating body and at equally divided positions in the rotational circumferential direction of the rotating body, and the planting An intermediate shaft is supported at an intermediate position so as to be parallel to the rotating shaft, and each of the plantings has a rod attached to the shaft, and the planting with split claws has a rod attached to the shaft, and on each intermediate shaft, a rod is attached to the sun gear. Provides an intermediate gear that meshes with the
The intermediate shaft and the planting shaft are fitted with interlocking gears that mesh with each other so that one rotation of the rotating body causes the planting shaft to rotate once in the opposite direction, and the re-interlocking gear or the sun gear and The intermediate gear is configured as an eccentric gear or an elliptical gear.

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. A boss body 2 protrudes horizontally from the side surface of the transmission case 1, and inside the boss body 2. A rotating shaft 3 that is rotationally driven by power transmission from an engine (not shown) mounted on the body of the rice transplanter is inserted, and an oval shaped shaft is inserted into the end of the rotating shaft 3 that protrudes from the boss body 2. A hollow rotating body 4 is fitted therein, and the rotating 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).

At both left and right ends of the rotary body 4, a support shaft 6 is non-rotatably supported with respect to the rotary body 4 in parallel with the rotary shaft 3 at a position equal to the distance from the rotary shaft 3. Hollow-shaped plant 1
The stem 7 is rotatably fitted, one end of the stem 7 protrudes outside the rotating body 4, and the planting has a dividing claw 9 on the protruding end. The dividing claw 9 on the rod 8 is attached so as to face the seedling stand 10, while the intermediate shaft 1 is installed in the rotating body 4 at a position between the rotating shaft 3 and the planting shaft 7.
1 is rotatably supported in parallel with both axes, 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 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 connected by the interlocking gears 13 and 14, and the planting shaft 7 is connected to the intermediate shaft 11 by one rotation of the rotating body 4. In interlocking and connecting the interlocking gears 13 and 14 so as to rotate once, the center (0) of each interlocking gear is eccentric by an appropriate dimension (e) from the center of rotation of each of the shafts 11 and 7. It is constructed of an eccentric gear.

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 through the interlocking gears 13 and 14, rotates to the left of arrow C, that is, in the opposite direction to the revolution direction of the rotating body 4, due to the rotation of the intermediate gear 12. The planting rod 8, which is attached to the shaft 7 for planting, rotates around the rotating shaft 3 while facing the direction of the seedling platform 10. When descending from top to bottom on the side facing 10, divide one seedling from the seedling tray 1 on the seedling stand 10 with the tip of the dividing claw 9, and then move the seedling to the field near the lower limit of descent. They are planted on the surface 15 and then raised above the field surface 15.

In this case, when the interlocking floats 13 and 14 having the same number of teeth that interlock and connect the intermediate gear 12 and the shaft 7 are not eccentric gears, the planting is caused by rotation of the shaft 7 in the left direction of the arrow C. Since the rotation angle is the same as the rotation angle of the rotation of the rotating body 4 in the right direction of the arrow A, the planting with the split claw 9 attached to the shaft 7 is the same as the rotation angle of the rotation of the rotating body 4 in the right direction. As it revolves, it rotates behind by the same rotation angle in the opposite direction to the revolution direction, so that each planting is done with the rod 8 facing the direction of the seedling platform 10, and also with respect to the seedling platform 10. Since the rotating movement is performed while maintaining a constant posture, the closed loop of the movement trajectory at the tip of the dividing claw 9 is only circular with a radius of the distance from the rotation axis 3 to the planting axis 7. However, by configuring the interlocking gears 13 and 14 having the same number of teeth, which interlock and connect the intermediate gear 12 and the shaft 7, as eccentric gears as described above, the revolution of the rotating body 4 in the right direction is prevented. During the planting, the leftward rotation of the shaft 7 is faster (or slower) than the rotation speed of the rotating body 4 due to the diameter difference between the eccentric interlocking gears 13 and 14. or

Therefore, the period when the rotation of the planting shaft 7 to the left slows down relative to the revolution of the rotary body 4 is the period when the planting head descends as it approaches the field scene 15 at stroke 8, as shown in FIG. In addition, the time when the rotation of the planting shaft 7 to the left becomes faster corresponds to the time when the planting axis 7 rises so that it approaches the upper limit of 8 and 1. From, each 4iff extra hit 8
is close to the field scene 15 (= 1 Since it moves further to the left than the revolution, rotates on its own, and changes its ζ attitude upward, the closed loop of the movement of the tip of the split claw 9 of the rod 8 is shown in Fig. 1 by the two-dot chain line. The result is an elliptical closed loop curve 16 that is elongated in the vertical direction.

In addition, in the above embodiment, the interlocking gears 13 and 14 that interlock and connect the intermediate gear 12 and the planting shaft 7 were configured as eccentric gears, but the interlocking gears 13 and 14 were configured as eccentric gears. Even if both the interlocking gears 13 and 14 are configured as elliptical gears instead of the rotation speed of the shaft 7, the rotational speed will be faster (or slower) during one rotation of the shaft 7, so the planting will be performed at the rod 8.
The locus of movement of the tip of the split claw 9 that falls on the rope becomes a closed loop with a long ellipse in the vertical direction, and the same effect as described above is produced.
Instead of configuring the sun gear 5 as an eccentric gear or an elliptical gear, the sun gear 5 and the intermediate gear 12 meshing therewith may be configured as an eccentric gear or an elliptical float. The planting rods 8 are not limited to 11i1 in the second embodiment, but can be arbitrarily divided into three or more pieces equally spaced in the circumferential direction.
During planting, when the rod 8 moves downward toward the field scene 15, the timing when the rod 8 changes its posture upward can be arbitrarily set by adjusting the rotational phase position of the sun gear 5 relative to the transmission case 1. As shown in the example in the drawing, the planting is done with 8 rods.
For planting on the shaft 7, the base and the part to which the split claw 9 is attached or the tip of the split claw 9 are shifted by an appropriate dimension (S) in the axial direction of the rotating shaft 3 in a plan view in FIG. By doing so, the tip of the split claw 9 and the planting rod 8 can avoid collision interference with the base of the rod 8, and the spacing between the shafts 7 and 7 can be narrowed to reduce the size of the seedling planting device. It is possible to achieve this goal. Furthermore,
In order for one revolution of the rotating body 4 to make one revolution of the shaft 7, the sun gear 5, the intermediate gear 12 and the re-interlocking gear 13.1 are required.
The number of teeth of 4 does not necessarily have to be the same number of teeth.

As described above, the present invention has the configuration described in the claims, so that each of a plurality of plants can be planted on one rotating body vertically on a rod, similar to the case of a vertically swinging type seedling planting device. Since the motion of a long and narrow closed-loop trajectory can be applied, multiple seedlings can be planted in one seedling planting row at high speed without causing an increase in vibration, significantly improving the efficiency of rice planting work. It has the effect of

[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 the line IV-IV in FIG. 3, and FIG. 5 is a diagram showing the rotating state of the eccentric gear. 1...Transmission case, 3...Rotating shaft, 4...
Rotating body, 5... Sun gear, 7... Planting axis, 8
... Planting is a rod, 9 ... split claw, 11 ... intermediate shaft, 12 ... intermediate gear, 13.14 ... interlocking gear. Patent applicant Yanmar Agricultural Machinery Co., Ltd.

Claims (1)

[Claims] +11. A rotating body is fixed to a rotating shaft that is horizontally supported on the body of the rice transplanter and transmits power from a power source, and a rotating body that cannot rotate with respect to the machine body but is fixed to a rotating shaft that is not rotatable relative to the machine body and that is A sun gear configured to rotate freely is installed,
The rotating body is planted at a suitable distance in the radial direction from the rotating shaft to which it is attached, and at equal intervals in the rotational circumferential direction of the rotating body. ,
The planting is supported by an intermediate shaft at an intermediate position between the shaft and the rotating shaft so as to be parallel to the rotating shaft. An intermediate gear that meshes with the sun gear is provided on each intermediate shaft, and the intermediate shaft and the planting shaft are meshed with each other such that one rotation of the rotating body causes the planting shaft to rotate once in the opposite direction. 1. A seedling planting device for a rice transplanter, characterized in that an interlocking gear is fitted therein, and the reinterlocking gear or the sun gear and the intermediate gear are configured as eccentric gears or elliptical gears.