JP2644469B2 - Rice transplanter seedling planting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

TECHNICAL FIELD The present invention relates to a rice transplanter,
The present invention relates to an improvement of a rotary seedling plant among seedling plants for dividing a seedling one by one from a seedling mat on a seedling mounting table and planting the seedlings in a field scene.

2. Description of the Related Art Conventionally, this type of seedling planting apparatus includes a vertically swinging type and a rotary type. The former vertically swinging type is disclosed, for example, in Japanese Patent Publication No. 49-27762. As described in the above, a base end of a planting rod having a split claw at a distal end is connected to a fuselage side via an agitating link, and a middle portion of the planting rod is rotatably driven by an engine. Pivotally attached to the tip of a crank fixed to the arm, and by rotating the crank, the planting rod swings up and down so that the tip of the split claw draws a vertically long elliptical closed-loop motion trajectory. However, the vibrating rods violently oscillate up and down, so that vibrations are remarkably large, so that planting of seedlings is unstable and planting speed is slow. On the other hand, the latter rotary-type seedling plant is disclosed in JP-B-49-17807 and JP-A-49-3.
As described in Japanese Patent No. 7418, for example, a rotating body case is provided on a substantially horizontal and lateral rotating shaft that is rotationally driven by power transmission from a transmission case, and a circle centered on the rotating shaft is provided on the rotating body case. On the circumference, a plurality of planting shafts are rotatably supported, and planting rods having split claws extending toward the seedling mounting table are attached to the planting shafts, while the rotating shafts are provided in the rotating body case. Between the non-rotating sun gear rotatably fitted to the non-rotating sun gear and each of the planting shafts, with the rotation of the rotating body case, each of the planting rods is disposed on the seedling mounting table with respect to each of the planting shafts. Since it is configured to provide a gear train for transmitting rotation so as to turn in a posture facing the direction, there is an advantage that vibration is less and the planting speed can be improved as compared with the former vertical swing type. Having.

However, in this conventional rotary seedling plant, the aforementioned Japanese Patent Publication No. Sho 49-17807 is used.
As described in Japanese Unexamined Patent Application Publication No. 49-37418 and the like, the boss portion of the sun gear provided in the rotating body case is engaged with the transmission case after protruding from the rotating body case. By doing so, the sun gear is configured to be held non-rotating, so that grass and straw chips wrap around the boss of the sun gear during operation, so that the sun gear moves in a direction away from the transmission case. As a result, not only does the non-rotational engagement with the transmission case come off, but also the engagement width between the sun gear and other gears decreases, and wear on each gear increases. That is, in the conventional rotary seedling plant, because grass and straw wastes are wound between the transmission case and the rotating body case,
In addition to the possibility of inoperability, there is a problem that the durability is greatly reduced. Further, in the conventional rotary seedling plant, the load of the rotating body case is configured to be supported only by the rotating shaft to which the rotating body case is attached, so that when the rotating body case is rotated. There is also a problem that the swing motion of the rotating body case is large, and the stability and accuracy of planting seedlings in the field scene are low due to the swing motion. The present invention
It is an object of the present invention to solve all the problems of the conventional rotary seedling plant at a glance.

SUMMARY OF THE INVENTION In order to achieve this technical object, the present invention relates to a method of mounting a rotator case on a substantially horizontal and horizontal rotation shaft which is driven to rotate by transmission of power from a transmission case. A plurality of planting shafts are rotatably supported on a circumference around the rotation shaft, and a planting rod having split claws extending toward the seedling mounting table is attached to each planting shaft. In the portion of the rotating body case between the non-rotating sun gear rotatably fitted to the rotating shaft and each of the planting shafts, the portion of the planting shaft is rotated with the rotation of the rotating body case. On the other hand, in a seedling plant provided with a gear train that transmits a rotation such that each of the planting rods turns in a posture facing the seedling mounting table, the rotation shaft includes a transmission case and a rotating body case. The fixed member can be freely rotated on the rotating shaft The fixing member is fixed at one end to the transmission case, while the other end of the fixing member is non-rotatably engaged with the sun gear within the rotating case, and further includes the rotating case. Of the transmission case side is supported by a bearing portion with respect to the fixing member. "

As described above, the fixing member is rotatably fitted on the rotating shaft at the portion between the transmission case and the rotating body case of the rotating shaft, and one end of the fixing member is connected to the rotating shaft. While fixing to the transmission case, the other end of this fixing member,
Even if grass, straw chips, etc. are wrapped around the fixed member during operation by being non-rotatably engaged with the sun gear in the rotator case, the wrapping causes the sun gear to move away from the transmission case. Can be prevented from being moved. In addition, by supporting a portion of the rotating body case on the transmission case side with the fixed member by a bearing portion, the load of the rotating body case is supported by both the rotating shaft and the fixed member. Therefore, the swinging motion of the rotating case when the rotating case is rotated can be reduced. Therefore, according to the present invention, in the rotary-type seedling-planting device, the inoperability occurs due to the grass and straw chips being wound between the transmission case and the rotating body case, and the durability is reduced. It is possible to reliably prevent the dropping, and it is possible to greatly improve the stability and accuracy of planting seedlings in the field scene.

Embodiments of the present invention will be described below with reference to the drawings. In the figure, reference numeral 1 denotes a transmission case in the body of a rice transplanter, and a boss 2 is horizontally projected on the side surface of the transmission case 1 in a horizontal direction and substantially parallel to the seedling mounting table 10. A rotary shaft 3 that is rotatably driven by power transmission from an engine (not shown) mounted on the body of the rice transplanter is inserted into the main body of the rice transplanter. Rotating body case 4 formed in shape
Is detachably mounted, and the rotating body case 4
Is configured to rotate rightward as indicated by arrow A. Further, this rotating body case is formed in a hollow shape by a split case 4a, 4b, and a sun gear 5 is arranged in the center of the inside so as to be rotatably fitted on the rotating shaft 3. The sun gear 5 is mounted on the transmission case 1
Are locked so as not to rotate. The structure is such that a fixing member 6 attached to the transmission case 1 so as to be able to adjust the rotational phase and the sun gear 5 are meshable with each other so that the sun gear 5 can mesh in the axial direction of the rotary shaft 3 such as a spline. This is done by meshing with each other. Further, the fixing member 6
A bearing 27 such as a ball bearing is provided on an outer diameter portion of the meshing portion 7, and a portion of the rotating case 4 on the transmission case 1 side is rotatably supported by the bearing 27. A ring-shaped filling member 2 having a diameter larger than that of the bearing portion 27 is provided between the fixing member 6 and the rotating body case 4.
6 is provided so as to prevent muddy water from entering the portion between the engagement portion 7 and the bearing portion 27. At both left and right ends of the outer case 4b of the rotator 4, the boss 8 is integrally protruded in parallel to the rotary shaft 3 at positions where the distance (L) from the rotary shaft 3 is equal. Then, a hollow planting rod 11 provided with a split claw 9 extending toward the seedling mounting table 10 is rotatably fitted and mounted at the base thereof. One end of the planting shaft 12 rotatably fitted to the inner diameter of the boss portion 8 is fixed to the side plate 13, and the other end of the planting shaft 12 faces the hollow portion of the rotating body 4, while the planting shaft is Twelve side plates 13 are fixed to outer plates 14 of the planting rods 11 by bolts 15. An intermediate shaft 16 is rotatably supported in the rotating body 4 at a position intermediate between the rotating shaft 3 and each planting shaft 12 in parallel with both shafts. 5 and the sun gear 5
An intermediate gear 17 having the same number of teeth as the above is rotatably provided, while an intermediate gear 17 on the intermediate shaft 16 is provided on the planting shaft 12.
The planetary gear 18 which always meshes with the rotating body 4
Is configured so that the planting shaft 12 makes one rotation in the direction opposite to the rotation direction of the rotating body 4 by one rotation of. At this time, the sun gear 5, the intermediate gear 17, and the planetary gear 18 are connected to the centers (O), (O '), and (O ") of the respective gears 5, 17, and 18.
However, an eccentric gear train eccentric from the rotation center of each of the shafts 3, 16 and 12 by an appropriate dimension (e) is formed to form a variable speed gear train. One end of the boss portion 8 faces each of the hollow planting rods 11, and a meshing claw 19 is formed at the one end, and a cam 20 meshing and engaging with this is rotatable about the planting shaft 12. , And serves as a power transmission unit for driving the split claw 9 of the planting rod 11 between left and right and driving the seedling pushing tool. In the embodiment shown in FIGS. 3 and 5, the pair of left and right split claws 9 of each planting rod 11 can be freely opened and closed right and left. It is forcibly opened so as to be narrow and to be planted in a field scene, that is, in the vicinity of the lower end of the dividing claw 9, so that the left-right interval of the lower end of the dividing claw 9 is widened. An opening / closing shaft 22 to which a member 21 to which one of the claws 9a 9 is detachably bolted to the outer surface of the planting rod 11 and the other of the claws 9b is detachably secured is attached, the one of the claws 9 is attached to the planting rod 11. 9a, a projection 24 protruding from the tip of a lever 23 attached to the opening / closing shaft 22 is pressed against the outer peripheral surface of the cam 20 by a spring 25 in the hollow of the planting rod 11. And the outer peripheral surface of the cam 20 is With rod 1
Only when 1 comes close to its lower limit, the open / close shaft 2
2 is forcibly rotated so that the lower end of the other claw 9b is separated from the lower end of the one claw 9a. In this configuration, when the rotating body 4 revolves in the right direction of the arrow A by the rotating shaft 3, the intermediate gear 17 meshing with the sun gear 5 that cannot rotate with respect to the transmission case 1 is accompanied by the revolution of the rotating body 4. , Arrow B by the same rotation angle as the rotation angle of its revolution
This intermediate gear 17 rotates to the right in the right direction.
The rotation of the intermediate gear 17 causes the planting shaft 12 to rotate in the direction of arrow C, that is, in the direction opposite to the direction of revolution of the rotating body 4, so that the planting rod 1 attached to the planting shaft 12
1, the split claw 9 turns around the rotating shaft 3 while keeping the posture in which the split claw 9 faces the seedling table 10 as shown in FIG. 1. Stand 1
When the side facing 0 is descended from the top to the bottom, the seedling is divided by a single plant from the seedling mat on the seedling mounting table 10 at the tip of the dividing claw 9, and then the seedling is moved to the field scene 26 near the lower lower limit. After planting, it rises from the field scene 26. Since each planting rod 11 is rotatably fitted to the boss 8 protruding from the rotating body 4, the rotating body 4
During the revolution of the arrow A in the right direction, each of the planting rods 11 rotates in the left direction of the arrow C with respect to each of the bosses 8, that is, in the direction opposite to the revolving direction of the rotating body 4.
The lever 23 in contact with the cam 20 meshing with the boss 8 at the lower limit of the lowering of the planting rod 11
When the tip of the intrudes into the field scene 26, it rotates upward by the force of the spring 25 based on the shape of the cam 20.
The opening / closing shaft 22 to which the lever 23 is attached rotates by an appropriate angle around its axis, and the lower end of the other claw 9b provided on the member 21 of the opening / closing shaft 22 is separated from the lower end of the one claw 9a. Seedlings can be reliably planted in the field soil. The gears 17 and 18 having the same number of teeth for interlocking the intermediate shaft 16 and the planting shaft 12 are connected to the center (O) of each gear.
Is constituted by an eccentric gear which is eccentric from the center of rotation of each of the shafts 16 and 12 by an appropriate dimension (e), so that the rotator 4 moves to the left of the planting shaft 12 as the rotating body 4 revolves rightward. The rotation of the rotation of the rotating body 4 is performed such that the rotation speed of the rotating body 4 is increased or decreased with respect to the rotation speed of the rotating body 4 due to the diameter difference between the two eccentric gears 17 and 18 during one rotation. Therefore, the planting shaft 1 with respect to the revolution of the rotating body 4
The time when the rotation of the plant 2 in the left direction is slowed down is when the planting rod 11 descends so as to approach the field scene 26.
2 is set to correspond to the time when the rotation of the planting rod 11 in the left direction is advanced so as to approach the upper limit of the rising of the planting rod 11, so that each planting rod 11 is in the field scene 26.
When descending so as to approach, the rotation of the rotating body 4 is delayed to the left from the revolution of the rotating body 4 and the attitude is changed to the downward direction. When approaching the upper limit of the rising, the rotating body 4 advances leftward more than the revolution of the rotating body 4 and freely. Since the body rotates and changes the posture upward, the closed loop of the movement trajectory of the distal end of the split claw 9 of each planting rod 11 has an elliptical closed loop curve 27 which is elongated in the vertical direction as shown by a two-dot chain line in FIG. It becomes. Note that, in another embodiment, a plurality of planting rods in this planting apparatus may be each equipped with an extruding tool for pushing a seedling divided by a split claw in the planting rod into a field scene. In this case, when the guide shaft for vertically moving the extruding tool along the split claw is driven up and down, the rotating body 4 is used.
The cam 20 that meshes with the boss portion 8 can be used.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment according to 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. 2;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

FIG. 5 is a sectional view taken along line VV of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transmission case 3 Rotating shaft 4 Rotating body case 5 Sun gear 6 Fixing member 7 Meshing part 8 Boss part 12 Planting shaft 11 Planting rod 9 Dividing claw 10 Seedling stand 16 Intermediate shaft 17 Intermediate gear 18 Planetary gear 26 Sealing member 27 Bearing

Claims (1)

(57) [Claims] 1. A rotating body case is mounted on a substantially horizontal and horizontal rotating shaft that is driven to rotate by transmission of power from a transmission case, and a plurality of planting shafts are mounted on the rotating body case on a circumference centered on the rotating shaft. Is rotatably supported, and a mounting rod having a split claw extending toward the seedling mounting table is mounted on each of the planting shafts, while being attached to the rotating shaft in the rotating body case.
A non-rotating sun gear rotatably fitted and
Between the attachment shaft and the rotating body case
The planting rod is closer to the seedling table
A gear train that transmits rotation that turns in a posture facing
In the seedling plant apparatus provided, a portion of the rotating shaft between a transmission case and a rotating body case is provided.
In addition, the fixing member is provided so as to be rotatably fitted on the rotating shaft,
While fixing one end of this fixing member to the transmission case,
The other end of the fixing member is moved forward in the rotating body case.
The sun gear is non-rotatably engaged with the sun gear, and
Of the transmission case side of the
A seedling planting device for a rice transplanter, which is supported by a bearing .