JP2644470B2 - Rice transplanter seedling planting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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.

[0002]

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 type of rotary seedling plant is disclosed in JP-B-49-17807 and JP-A-49-17807.
As described in Japanese Patent Publication No. 37418 (Japanese Utility Model Publication No. 56-21212), a rotating body case is attached to a substantially horizontal sideways rotating shaft that is rotationally driven by power transmission from a transmission case. Of the left and right side plates, provided at the mounting boss portion integrally provided on the side plate opposite to the transmission case, a plurality of planting shafts are provided on the rotating body case on a circumference around the rotation 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 rotatably fitted to the rotating shaft in the rotating body case. Between the non-rotating sun gear provided and each of the planting shafts, each of the planting rods pivots with respect to each of the planting shafts in a posture facing the seedling mounting table with the rotation of the rotating body case. Provide a gear train that transmits rotation Since those configured to say, than the former vertical swing type, little vibration, and has the advantage of improving the planting rate.

[0004]

However, in this conventional rotary seedling plant, the aforementioned Japanese Patent Publication No. Sho 49-17807 is used.
And Japanese Utility Model Publication No. 49-37418 (Japanese Utility Model Publication No. 56-2
No. 1212) As described in the official gazette, etc., a hollow boss portion integrally provided with a sun gear provided in a rotating body case is engaged with a transmission case after protruding from the rotating body case. By combining, the sun gear is configured to be held in a non-rotating manner, so that grass and straw chips wrap around the boss portion of the sun gear during operation, so that the sun gear moves away from the transmission case. Not only does it cause a non-rotational engagement with the transmission case due to being moved, but also the engagement width between the sun gear and other gears decreases, and wear on each gear increases.

[0005] That is, in the conventional rotary seedling plant, there is a possibility that not only the inoperability may occur due to the grass and straw chips being wound between the transmission case and the rotating body case, There was a problem that the durability was greatly reduced. Moreover, in the conventional rotary seedling plant, in order to reduce the thickness of the rotating body case, a mounting boss for the rotating shaft of the rotating body case is provided integrally with the sun gear. By projecting into the hollow boss portion, the diameter of the sun gear increases by that much, and, consequently, the diameter of each gear in the gear train increases. There is also a problem that the distance between the shafts is increased, which causes the rotator case to be enlarged in the diameter direction.

SUMMARY OF THE INVENTION It is a technical object of the present invention to solve all the above-mentioned problems of the conventional rotary seedling plant at once.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above technical object, the present invention provides a rotating case having a rotating body case mounted on a substantially horizontal and horizontal rotating shaft which is rotationally driven by power transmission from a transmission case. A mounting boss is provided integrally on the side plate on the opposite side to the transmission case of the left and right side plates, and a plurality of planting shafts are mounted on the rotating body case on a circumference centered on the rotating shaft. Is rotatably supported,
A non-rotating sun gear provided rotatably fitted to the rotating shaft in the rotating body case while attaching a planting rod having a split claw extending toward the seedling mounting table to each of the planting shafts. A gear that transmits a rotation between the planting shafts so that the planting rods turn in a posture facing the seedling mounting table with respect to the planting shafts with the rotation of the rotating body case. In the seedling plant comprising rows, without attaching the mounting boss portion to the inner diameter portion of the sun gear,
Of the left and right side plates in the rotating body case, the transmission case is configured to protrude outward from the side plate opposite to the transmission case, and a portion of the rotating shaft between the transmission case and the rotating body case, a fixing member, Provided 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 non-rotatably engaged with the sun gear in the rotating body case. ".

[0008]

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.

Also, the mounting boss portion for the rotating shaft of the rotating body case does not protrude into the inner diameter portion of the sun gear, and is mounted on the left and right side face plates of the rotating body case on the side opposite to the transmission case. By configuring to protrude outward, the diameter of the sun gear can be made smaller than in the conventional case, and consequently, the diameter of each gear in the gear train can be reduced, so that each planting can be performed from the rotating shaft. The distance between the axes to the axis can be reduced.

Therefore, according to the present invention, in the rotary-type seedling-planting apparatus, inoperability occurs due to grass and straw chips being wound between the transmission case and the rotating body case, and It is possible to reliably prevent the durability from being reduced and to achieve a reduction in the diameter of the rotating body case in the diameter direction.

[0011]

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, the rotating body case 4 is formed in a hollow shape by two divided cases 4a and 4b, and is externally attached to a divided case 4b of the two divided cases 4a and 4b opposite to the power transmission case 1. Attached to the rotating shaft 3 by an attachment boss 4b 'integrally provided so as to protrude in the direction,
Further, it is configured to rotate integrally with the rotating shaft 3 by the mounting boss 4b 'and the pin 4b "inserted so as to penetrate the rotating shaft 3.

A sun gear 5 is provided at the center of the inside of the rotating body case 4 so as to be rotatably fitted on the rotating shaft 3, and 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.

The fixing member 6 is provided with the engaging portion 7.
A bearing 27 such as a ball bearing is provided on the outer diameter of
The rotating body case 4 is rotatably supported by the bearing portion 27, and a ring-shaped filling member 26 having a larger diameter than the bearing portion 27 is provided between the fixed member 6 and the rotating body case 4. 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 rotating body 4, boss portions 8 are integrally protruded at positions where the distance (L) from the rotating shaft 3 is equal, in parallel with the rotating shaft 3.
A hollow planting rod 11 having a split claw 9 extending toward the seedling mounting table 10 is rotatably fitted and mounted on the base of the boss 8 at the base thereof. The planting shaft 12 rotatably fitted to the inner diameter of the boss portion 8 includes:
One end thereof is fixed to the side plate 13, and the other end of the planting shaft 12 faces the hollow part of the rotating body 4, while the side plate 13 of the planting shaft 12 is fixed to the outer plate 14 of the planting rod 11 by bolts 15. .

In the rotating body 4, an intermediate shaft 16 is rotatably supported in a position intermediate between the rotating shaft 3 and each planting shaft 12 in parallel with both shafts. The sun gear 5
An intermediate gear 17 having the same number of teeth as the sun gear 5 is rotatably provided while a planetary gear 18 constantly meshing with the intermediate gear 17 on the intermediate shaft 16 is fitted on the planting shaft 12. Then, the planting shaft 12 is configured to make one rotation in the direction opposite to the rotation direction of the rotating body 4 by one rotation of the rotating body 4.

At this time, the center (O), (O '), and (O ") of the sun gear 5, the intermediate gear 17, and the planetary gear 18 are adjusted to their respective axes 3, 16 ,
An eccentric gear train eccentric from the rotation center of No. 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 opened and closed left and right.
When the plant is planted in a field scene, that is, in the vicinity of the lower end of the dividing claw 9, the left and right spacing of the lower end of the dividing claw 9 is forcibly opened so as to be wider.
One of the pair of left and right split claws 9 is detachably bolted to the outer surface of the planting rod 11 with one of the claws 9a, and a member 21 is detachably fixed to the other claw 9b.
Reference numeral 2 denotes a projection 24 which is rotatably supported by the planting rod 11 so as to be rotatable substantially parallel to the one claw 9a, and protrudes from the tip of a lever 23 attached to the opening / closing shaft 22 in the hollow of the planting rod 11.
Is pressed against the outer peripheral surface of the cam 20 by a spring 25, and the outer peripheral surface of the cam 20 is forcibly forced to open / close the opening / closing shaft 22 only when each of the planting rods 11 comes near the lower limit of its lowering. By rotating, the lower end of the other claw 9b is
It is configured to be separated from the lower end of a.

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 meshes with the sun gear 5 that cannot rotate with respect to the transmission case 1.
Is connected to the intermediate gear 17 via the planetary gear 18 via the planetary gear 18 so as to rotate rightward in the direction of the arrow B by the same rotation angle as the rotation of the rotating body 4.
Is rotated by the rotation of the intermediate gear 17 in the direction of arrow C, that is, in the direction opposite to the revolving direction of the rotating body 4, so that the planting rod 11 attached to the planting shaft 12 has the split claw 9 as shown in FIG. While keeping the posture facing the seedling table 10
In this pivoting motion, when the side facing the seedling platform 10 descends from the top to the bottom during this pivoting motion, the tip of the split claw 9 moves on the seedling platform 10. After a single seedling is divided from the seedling mat, the seedlings are planted in the field scene 26 near the lower lower limit, and then rise from the field scene 26.

Since each planting rod 11 is rotatably fitted on the boss 8 projecting from the rotating body 4, each planting rod 11 is rotated while the rotating body 4 revolves rightward as indicated by the arrow A. 11
Is rotated in the left direction of the arrow C, that is, in the direction opposite to the revolving direction of the rotating body 4 with respect to each of the bosses 8, so that the lever 23 in contact with the cam 20 that meshes with the boss 8 in each planting rod 11 is When the tip of the split claw 9 enters the field scene 26 at the lower limit of the lowering of the planting rod 11, the cam 2
The opening and closing shaft 22 to which the lever 23 is attached is rotated by an appropriate angle around its axis because the opening and closing shaft 22 is attached to the member 21 of the opening and closing shaft 22. The lower end of the claw 9b is separated from the lower end of the one claw 9a, so that the seedlings can be reliably planted in the field soil.

The gears 17 and 18 having the same number of teeth for interlockingly connecting the intermediate shaft 16 and the planting shaft 12 are arranged such that the center (O) of each of the gears is appropriately dimensioned from the rotation center of the respective shaft 16 and 12. By configuring the eccentric gear with eccentricity only by (e), the rotation of the planting shaft 12 to the left due to the revolving of the rotating body 4 to the right causes the eccentric gears to rotate in one rotation. Due to the difference between the diameters of the interlocking gears 17 and 18, the rotation of the rotating body 4 is made faster or slower with respect to the rotation speed of the rotating body 4. The time when the rotation of the planting shaft 11 to the left becomes slower is when the planting rod 11 descends so as to approach the field scene 26, and the time when the rotation of the planting shaft 12 is faster to the left is the upper limit of the rising of the planting rod 11. Set to correspond to the time of ascent to approach Thus, when the planting rod 11 descends so as to approach the field scene 26, the planting rod 11 rotates to the left more slowly than the revolution of the rotating body 4 to change the posture downward, and when approaching the upper limit of rotation, the rotating body 11 rotates. 4, the closed loop of the movement trajectory of the tip of the split claw 9 of each planting rod 11 is shown by a two-dot chain line in FIG. Thus, a closed loop curve 27 having an elliptical shape elongated vertically is obtained.

In another embodiment, an extruding tool for pushing a seedling divided by a split claw of the planting rod into a field scene is attached to each of the plurality of planting rods in the seedling planting apparatus. In this case, the cam 20 that meshes with the boss 8 of the rotating body 4 can be used to vertically move a guide shaft for vertically moving the pusher along the split claw.

[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 4b 'Mounting boss part 5 Sun gear 6 Fixing member 7 Meshing part 8 Boss part 12 Planting shaft 11 Planting rod 9 Division claw 10 Seedling stand 16 Intermediate shaft 17 Intermediate gear 18 Planetary gear 27 Bearing part

Claims (1)

(57) [Claims] To 1. A substantially horizontal transverse rotary shaft driven to rotate by power transmission from the transmission case, the rotary body case, those
The transmission cable is provided between the left and right side plates of the rotating body case.
Mounting boss part integrally provided on the side plate opposite to the base
The rotating body case has a plurality of planting shafts rotatably supported on a circumference around the rotating shaft, and each of the planting shafts has a split claw extending toward the seedling mounting table. and while mounting the planting rod, the dose of the said rotary body case
Non-rotating sun gear rotatably fitted on the pivot and front
Rotation of the rotating body case between the planting axes
Each of the planting rods is mounted on the seedling shaft with respect to each of the planting axes.
Teeth that transmit rotation as if turning in the direction of the platform
In a seedling plant comprising a train, the mounting boss protrudes from the inner diameter of the sun gear.
Without the front of the left and right side plates in the rotating body case
It protrudes outward from the side plate opposite to the transmission case.
Of the rotating shaft, the transmission case and the rotating body case
The fixed member is rotatably fitted to the rotating shaft
And one end of the fixing member is fixed to the transmission case.
On the other hand, the other end of the fixing member is inserted into the rotating body case.
And a non-rotatable engagement with the sun gear .