JPH0549325A - Seedling-planting device of rice transplanter - Google Patents

Abstract

PURPOSE:To reduce the useless division of seedlings in a rotary seedling-planting device, when the rotation of a rotator is stopped to stop the planting of the seedlings. CONSTITUTION:When the rotation of the above-mentioned rotator 4 is stopped by a constant position stopping clutch 20, the number of constant position stopping positions by the constant position stopping clutch 20 is equalized with the number of planting levers 8 attached to the rotator.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling planting device for splitting seedlings from a seedling mat on a seedling mounting table into individual rice planters and then planting the seedlings in a field.

[0002]

2. Description of the Related Art Conventionally, a seedling planting device of this type has a base end of a planting rod having a split claw at its tip and a fan link on the machine side, as described in Japanese Patent Publication No. 49-27762. On the other hand, the middle part of the planting rod is pivotally attached to the tip of the crank fixed to the claw shaft that is driven to rotate by the engine, and the tip of the planting rod is closed looped by the rotation of the crank. It was to swing up and down so as to draw a trajectory.

However, this conventional vertical rocking type seedling planting device has a split claw attached to the planting rod, as compared with the rotary type planting device disclosed in Japanese Utility Model Publication No. 33-18922. Since it moves up and down while facing the direction of the mounting table, it has the feature that it can be planted in a field scene in a substantially vertical manner to the seedlings taken out from the seedling mounting table with the dividing claws, compared to the rotary type. Vibration is generated due to the severe vertical swing of the planting rod, and this vibration increases in proportion to the speed of the vertical swing, and this vibration is caused by one vertical swing, that is, the crank. Since only one seedling can be planted per one rotation, the planting speed cannot be increased.

Therefore, based on the rotary type, the split claws on each of the plurality of planting rods attached to the rotating body are constructed so as to circulate through the seedling taking-out port on the seedling mounting table, thereby providing a rotary type seedling planting device. A seedling planting device having both features of a vertical swing type seedling planting device has been proposed (for example, Japanese Patent Application Laid-Open No. 49-17806). When stopping the rotation of the rotating body having the planting rod by the clutch mechanism, for example, as in the case of the vertical rocking type seedling planting device described in Japanese Patent Laid-Open No. 52-69724, the rotation is performed. The rotation of the body is stopped at one phase position during one rotation.

[0005]

Therefore, in this conventional rotary type seedling planting apparatus, even if the clutch mechanism is disengaged, the seedling mat on the seedling table is removed from the seedling mat until the rotation of the rotating body is stopped. There is a problem that seedlings are wastefully consumed because the seedlings are wastefully cut and split at least twice or more by the split claws in each planting rod.

An object of the present invention is to provide a rotary type seedling planting apparatus which solves this problem.

[0007]

In order to achieve this object, the present invention is directed to a rotary shaft extending substantially horizontally and substantially parallel to a seedling mounting table attached to a machine body of a rice transplanter. A rotating body arranged to be rotated by the rotating body, and at least two or more splitting claws with split claws for splitting and planting seedlings from the seedling mounting table on the rotary body, the split claws of the planting rod are In a seedling planting device of a rice transplanter that is mounted so as to circulate through a seedling take-out port of a seedling mount, a clutch mechanism for intermittently transmitting power to the rotating shaft is configured as a fixed-position stop clutch, and the fixed position The fixed position stopped position by the stop clutch was configured so as to correspond to the number of planting rods corresponding to the seedling take-out port on one seedling mounting table.

[0008]

By operating the fixed position stop clutch to turn off, the rotating body can always be stopped in a fixed phase position. In this case, the fixed position stop position by the fixed position stop clutch is one seedling table. By configuring so as to correspond to the number of planting rods corresponding to the seedling taking-out port in, the split claws in the planting rod pass through the seedling taking-out port of the seedling table until the rotation of the rotating body is stopped. The number of times, that is, the number of times the seedlings are taken out and divided can be limited to at least one.

[0009]

As described above, according to the present invention, it is possible to surely reduce wasteful consumption of seedlings when the rotating body is stopped even though the seedlings are planted at high speed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following is a description of the case where the embodiment of the present invention is applied to a rice transplanter of Nijo planting. In the figure, reference numeral 1 indicates a transmission case in the body of the rice transplanter, and the left and right sides of the transmission case 1 are described. On both sides, a boss body 2 projects in a substantially horizontal lateral direction and substantially parallel to the seedling stand 10. Inside the both boss bodies 2, power is transmitted from an engine (not shown) mounted on a rice transplanter machine. A rotary shaft 3 which is driven to rotate is inserted into the rotary shaft 3 and an oval-shaped and hollow rotary body 4 is fitted to each of the protruding ends of the rotary shaft 3 from the bosses 2. The rotating body 4 is configured to rotate in the right direction of the arrow A in a side view.

A sun gear 5, which is rotatably fitted to the boss body 2 and is rotatable with respect to the rotating body 4, is disposed in the center of each of the rotating bodies 4. Is non-rotatably locked to the transmission case 1 by an appropriate rotation phase adjusting means (not shown). A support shaft 6 is rotatably supported on the left and right ends of both of the rotating bodies 4 at a position where the distance (L) from the rotating shaft 3 is equal to each other, in parallel with the rotating shaft 3 and unrotatable with respect to the rotating body 4. A hollow planting shaft 7 is rotatably fitted onto the support shaft 6, one end of the planting shaft 7 is projected to the outside of the rotating body 4, and the seedlings are mounted on the projecting ends of the respective planting shafts 7. The planting rod 8 having the split claws 9 extending toward the base 10 is mounted, while the rotating shaft 4 has an intermediate shaft 11 at a position intermediate between the rotating shaft 3 and each planting shaft 7. Is rotatably supported in parallel with the respective intermediate shafts 11
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 on the top.

The interlocking gear 13 having the same number of teeth as the intermediate gear 12 is fitted on the intermediate shaft 11, while the interlocking gear 13 on the intermediate shaft 11 has the same teeth on the planting shaft 7. A number of interlocking gears 14 which are always meshed with the intermediate gears 11 and the planting shaft 7 are fitted to the interlocking gears 13, 1
By interlocking with each other at 4, the planting shaft 7 is rotated once in the direction opposite to the rotating direction of the rotating body 4 by one rotation of the rotating body 4.

On the other hand, the rotating shaft 3 in the transmission case 1 is provided with a clutch mechanism 15 for interrupting power transmission to the rotating shaft 3. This clutch mechanism 15 is rotatably fitted onto a rotary shaft 3 as shown in FIGS. 5 and 6, and a bevel gear 1 is attached to a shaft 16 from an engine (not shown).
Drive clutch 19 and rotary shaft 3 that are interlocked via 7, 18
The fixed position stop clutch 20 is fixed to the inner surface of the transmission case 1 by a fixed clutch 21 fixed on the inner surface of the transmission case 1 by a spline fitting or the like so as to be non-rotatably and slidably fitted. The drive clutch 19 is constantly urged so that the rotary shaft 3 is driven to rotate by this engagement, while the shifter lever 23 engaged with the fixed position stop clutch 20 is connected to a handle or the like in a rice transplanter. When a fixed position stop clutch 20 is slid in a direction away from the driving clutch 19 by connecting the planting operation lever (not shown) provided at an appropriate position of the above through a wire 24 and operating the planting operation lever, When the mesh with the clutch 19 is disengaged and the power transmission to the rotary shaft 3 is cut off, the fixed-position stop clutch 20 meshes with the fixed clutch 21 almost at the same time. Te, configured so that the rotation of the rotary shaft 3 is stopped, and the time of engagement of the fixed-position stop clutch 20 and the fixed clutch 21, a pair of claws 20a at the fixed-position stop clutch 20 side, 20b are fixed clutch 21
As shown in FIG. 6, for the pair of claws 21a and 21b on the side, the rotary body 2 is rotated during one rotation of the rotary body 2.
Is configured so as to mesh only at a half-rotation phase position where is horizontal.

In this structure, when the rotating body 4 revolves in the right direction of the arrow A by the rotating shaft 3, the intermediate gear 12 meshing with the sun gear 5 which cannot rotate with respect to the transmission case 1.
Along with the revolution of the rotating body 4, rotates about the same rotation angle as the rotation angle in the right direction of the arrow B. The planting shaft 7 that is interlocked with the intermediate gear 12 via the interlocking gears 13 and 14 rotates in the left direction of the arrow C, that is, in the direction opposite to the revolution direction of the rotating body 4 by the rotation of the intermediate gear 12, so that the planting The planting rod 8 attached to the shaft 7 turns around the rotary shaft 3 with the split claw 9 facing the seedling table 10 as shown in FIG. During the exercise, when the side facing the seedling placing table 10 is descended from the top to the bottom, one seedling is cut off from the seedling mat on the seedling placing table 10 at the tip of the dividing claw 9 and then descended. In the vicinity of the lower limit, it is planted in the farm scene 25, and thereafter rises above the farm scene 25.

In order to stop the seedling planting when turning a direction in rice planting work, the fixed position stop clutch 20 is operated by the operation of the planting operation lever to drive the clutch 1.
When sliding in the direction away from 9, the fixed position stop clutch 20 is disengaged from the driving clutch 19 and the power transmission to the rotating body 2 is interrupted, and substantially at the same time, the fixed position stop clutch 20 moves to the fixed clutch. By engaging with 21, the rotation of the rotating body 2 stops and the seedling planting stops.

In this case, since the fixed-position stop clutch 20 is engaged with the fixed clutch 21 only at two positions which are shifted by 180 degrees during one rotation of the rotating body 2, when the rotating body 2 is stopped rotating. , The rotating body 2 only rotates up to half a turn, and the split claw 9 in one of the two mounting rods 8 attached to this rotating body 2 passes through the seedling mounting table 10 only once. It can be stopped.

Incidentally, the interlocking gears 13 and 14 having the same number of teeth for interlockingly connecting the intermediate shaft 11 and the planting shaft 7 with each other, the centers (O) of these gears are appropriately set from the rotation centers of the respective shafts 11 and 7. If the eccentric gear is eccentric by the dimension (e), the rotation of the planting shaft 7 to the left due to the revolution of the rotating body 4 to the right, the eccentric type rotation is performed during one rotation. Because the diameter difference between the interlocking gears 13 and 14 makes the rotation speed of the rotating body 4 faster or slower, the rotation of the planting shaft 7 to the left with respect to the revolution of the rotating body 4 is prevented. The later time is the time when the planting rod 8 descends so as to approach the field scene 15 and the time when the planting shaft 7 rotates to the left faster is the time when the planting rod 8 rises so as to approach the upper limit of the rise. By setting so as to correspond to each, each planting rod 8 becomes When descending so as to come closer to the left, it rotates behind the revolution of the rotating body 4 to the left, and rotates its posture to change its posture downward. Since it rotates and changes its posture upward, the tip 9a of the split claw 9 of each planting rod 8
The closed loop of the locus of motion is a closed loop curve that is elongated in the vertical direction and is elliptical as shown by the chain double-dashed line in FIG.

In the above embodiment, the planetary gear mechanism including the sun gear 5, the intermediate gear 12, and the interlocking gears 13 and 14 is used as a means for rotating the planting shaft 7 in the opposite direction by one rotation of the rotating body 4. Although the sun gear 5 is replaced with a pulley and the belt is transmitted between this pulley and the planting shaft 7, the planting shaft 7 rotates once in the opposite direction per one rotation of the rotating body 4 by other means. Needless to say, the clutch mechanism 15 including the fixed-position stop clutch 20 on the rotary shaft 3 as in the above-described embodiment may be used.
Instead of providing the above, the clutch mechanism 15 including the fixed position stop clutch 20 may be provided on the shaft for power transmission to the rotary shaft 3 or the like.

[0019]

[Explanation of symbols]

[0020]

FIG. 1 is a front view showing an embodiment of the present invention.

[0021]

FIG. 2 is a plan view of FIG.

[0022]

FIG. 3 is an enlarged sectional view taken along line III-III of FIG.

[0023]

4 is a sectional view taken along line IV-IV in FIG.

[0024]

FIG. 5 is an enlarged view of a clutch mechanism.

[0025]

6 is a sectional view taken along line VI-VI of FIG.

[0026]

[Explanation of symbols]

 1 Transmission Case 3 Rotating Shaft 4 Rotating Body 5 Sun Gear 7 Planting Shaft 8 Planting Rod 9 Dividing Claw 10 Seedling Stand 11 Intermediate Shaft 12 Intermediate Gear 13,14 Interlocking Gear 15 Clutch Mechanism 19 Main Clutch 20 Fixed Position Stop Clutch 21 Fixed Clutch

[Procedure amendment]

[Submission date] July 7, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0019

[Correction method] Delete

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is an enlarged sectional view taken along line III-III of FIG.

4 is a sectional view taken along line IV-IV of FIG.

FIG. 5 is an enlarged view of a clutch mechanism.

6 is a sectional view taken along line VI-VI of FIG.

[Explanation of symbols] 1 transmission case 3 rotating shaft 4 rotating body 5 sun gear 7 planting shaft 8 planting rod 9 split claw 10 seedling stand 11 intermediate shaft 12 intermediate gear 13,14 interlocking gear 15 clutch mechanism 19 main clutch 20 fixed position Stop clutch 21 Fixed clutch

Claims (1)

[Claims] 1. A rotary body which is rotated by a rotary shaft extending substantially horizontally and substantially parallel to the seedling stand mounted on the body of the rice transplanter and facing the seedling stand is provided. In, at least two planting rods with split claws for splitting and planting seedlings from the seedling mounting table are attached so that the split claws of the planting rod circulate through the seedling taking-out port of the seedling mounting table. In the seedling planting device of the rice transplanter, the clutch mechanism for intermittently transmitting power to the rotary shaft is configured as a fixed-position stop clutch, and the fixed-position stop position by the fixed-position stop clutch is one seedling platform. A seedling planting device for a rice transplanter, which is configured so as to correspond to the number of planting rods corresponding to the seedling take-out port in.