JP2507869B2 - Rice planting equipment for rice transplanters - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary type seedling plant in a rice planting machine for dividing a seedling from a seedling mat on a seedling table and then planting this in a field scene in a rice transplanter. It relates to an improvement of the device.

[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 rotary type seedling planting apparatus is, as described in Japanese Patent Publication No. Sho 49-17807, a substantially horizontal horizontal rotation shaft which is rotationally driven by power transmission from a transmission case. A rotating body case is detachably attached to the rotating body case, and a plurality of planting shafts are rotatably supported on the rotating body case around a circumference centered on the rotating shaft. While installing a planting rod having a split claw extending in the same direction, the rotating body case is provided between the planting shaft and a non-rotating sun gear rotatably fitted to the rotating shaft. A configuration is provided in which a gear train is provided for transmitting the rotation such that the planting rod attached to the planting shaft turns in a posture facing the seedling mounting table with respect to each planting shaft as the case rotates. Since it was done, above the former Than the swing type, little vibration,
In addition, there is an advantage that the planting speed can be improved.

[0004]

However, in this conventional rotary type seedling plant, the non-rotating sun gear is
Since it is configured to engage with the transmission case on the outside of the rotating case, the grass may be wound between the rotating case and the transmitting case during work, or mud may enter the sun gear, However, there is a problem in that the mesh width between the sun gear and the gear train is reduced by being pushed in a direction away from the transmission case, and the teeth of these gears may be damaged.

The present invention has a technical object to provide a rotary type seedling planting apparatus capable of solving this problem.

[0006]

In order to achieve this technical object, the present invention provides: "A rotary body case is attached to a substantially horizontal sideways rotary shaft which is rotationally driven by power transmission from the transmission case, and the rotary body case is attached to the rotary body case. , A plurality of planting shafts are rotatably supported on a circumference centered on the rotating shaft, and each planting shaft is attached with a planting rod having a split claw extending toward the seedling table, while rotating the planting rod. In the body case, between the non-rotating sun gear rotatably fitted to the rotation shaft and the planting shaft, the planting shaft is planted on each planting shaft as the body casing rotates. In a seedling planting device provided with a gear train adapted to transmit a rotation such that the planting rod attached to the shaft turns in the posture facing the seedling mounting table, the tip of the fixing member attached to the transmission case is provided. , The inner wall of the rotating case Provided to be inserted into the rotating body case, this tip was configured to say the engage sun gear in a rotating body case and provided so as not to rotate. ".

[0007]

As described above, the tip portion of the fixing member attached to the transmission case is provided so as to be inserted into the rotor case from the inner wall of the rotor case. By providing the sun gear in the rotating body case so that it does not rotate, even if grass gets caught between the rotating body case and the transmission case during operation or mud enters, In addition, since it is possible to reliably prevent the sun gear from being pushed in the direction away from the transmission case, there is no possibility that the meshing between the sun gear and the gear train will change, and damage to each of these gears will occur. It has an effect that it can be surely prevented, and appropriate planting of seedlings can be stably performed.

[0008]

Embodiments of the present invention will now be described with reference to the drawings. In the drawings, reference numeral 1 indicates a transmission case of a rice transplanter machine, and a boss body 2 is provided on a side surface of the transmission case 1.
Is projected horizontally and in a direction substantially parallel to the seedling table 10,
A rotary shaft 3 that is driven to rotate 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 rotary shaft 3 projects from the boss body 2. An oval-shaped rotating body case 4 is detachably attached to the end, and the rotating body case 4 is configured to rotate rightward as indicated by an arrow A.

Further, the rotating body case is formed in a hollow shape by the two divided cases 4a and 4b, and the sun gear 5 is rotatably fitted on the rotating shaft 3 at the center of the inside thereof. The sun gear 5 is arranged in the transmission case 1 as described above.
On the other hand, it is locked so that it cannot rotate. The structure is such that the tip of the fixing member 6 mounted on the transmission case 1 so as to adjust the rotational phase is inserted into the rotor case 4 from the inner wall of the rotor case 4, and , The sun gear 5 is meshed with a meshing portion 7 which can mesh in the axial direction of the rotary shaft 3 such as a spline.

The engaging member 7 is attached to the fixing member 6.
A bearing portion 27 such as a bearing is provided on the outer diameter portion of the, and the bearing portion 27 rotatably supports the rotating body case 4, and between the fixed member 6 and the rotating body case 4, A ring-shaped seal member 26 having a diameter larger than that of the bearing portion 27 is provided to seal the meshing portion 7 and the bearing portion 27 against the atmosphere.

At the left and right ends of the outer case 4b of the rotating body 4, boss portions 8 are integrally projected in parallel with the rotating shaft 3 at positions where the distance (L) from the rotating shaft 3 is equal.
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 that is rotatably fitted into the inner diameter of the boss portion 8 is
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 at a position intermediate between the rotating shaft 3 and each of the planting shafts 12 so as to be rotatable parallel to 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, regarding the sun gear 5, the intermediate gear 17, and the planetary gear 18, the centers (O), (O '), and (O ") of these gears 5, 17, and 18 have their shafts 3 and 16 respectively. ，
An eccentric gear train is formed by eccentricizing the rotation center 12 by an appropriate dimension (e) to form a non-constant speed gear train. Then, one end of the boss portion 8 is exposed in each of the hollow planting rods 11, and a meshing pawl 19 is formed at the one end, and a cam 20 meshingly engaged with this is freely rotatable on the planting shaft 12. It is configured to be a power transmission part for driving the split claws 9 in the planting rod 11 between the left and right sides and driving the seedling pushing tool.

In the embodiment shown in FIG. 3 and FIG. 5, the pair of left and right split claws 9 in each planting rod 11 can be opened and closed left and right, and when the seedling mat on the seedling table 10 is split, the split claws 9 are used.
The bottom end has a narrow left-right space and is forcibly opened when planted in a field, that is, in the vicinity of the lower end of the split claw 9 so that the left-right space of the bottom end of the split claw 9 becomes 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 brought into contact with the outer peripheral surface of the cam 20 by pressing the spring 25, and the outer peripheral surface of the cam 20 is forced to force the opening / closing shaft 22 only when each of the planting rods 11 is near the lower limit of its descending. The lower end of the other claw 9b is rotated and the lower end of the other claw 9b is rotated.
It is configured to be separated from the lower end of a.

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 17 meshing with the sun gear 5 which 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 portion 8 projecting from the rotating body 4, each planting rod is revolved while the rotating body 4 revolves in the right direction of 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 appropriately sized with respect to the center (O) of each gear from the center of rotation of the respective shafts 16 and 12. By constructing an eccentric gear that is eccentric only in (e), the rotation of the planting shaft 12 to the left along with the revolution of the rotating body 4 to the right, the eccentric type rotation is performed during one rotation. The diameter difference between the interlocking gears 17 and 18 causes the rotating body 4 to swing and rotate faster or slower than the rotation speed of the rotating body 4. When the rotation of the planting rod 11 to the left is delayed, the planting rod 12 is lowered to approach the farm scene 26, and when the planting shaft 12 is rotated to the left, the upper limit of the planting rod 11 is increased. Set to correspond to each rising time 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.

[0018] In another embodiment, a plurality of planting rods in this planting apparatus are equipped with pushers for pushing seedlings divided by the dividing claws in the planting rods into a field scene. In this case, the cam 20 meshing with the boss portion 8 of the rotating body 4 can be used to vertically drive the guide shaft for vertically moving the pushing tool along the split claw.

[Brief description of drawings]

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

FIG. 2 is a plan view of FIG.

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

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

5 is a cross-sectional view taken along line VV of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transmission case 3 Rotating shaft 4 Rotating body case 5 Sun gear 6 Fixing member 7 Engagement portion 8 Boss portion 12 Planting shaft 11 Planting rod 9 Dividing claw 10 Seedling table 16 Intermediate shaft 17 Intermediate gear 18 Planetary gear. 26 seal member 27 bearing

Claims (1)

(57) [Claims] 1. A rotary body case is attached to a substantially horizontal lateral rotary shaft that is rotationally driven by power transmission from a power transmission case, and a plurality of planting shafts are attached to the rotary body case on a circumference centered on the rotary shaft. Is rotatably supported, and each of the planting shafts is fitted with a planting rod having a split claw extending toward the seedling table, while the rotary body case is rotatably fitted to the rotary shaft. Between the non-rotating sun gear provided and the planting shaft, the posture in which the planting rods attached to the planting shafts with respect to the planting shafts in the direction of the seedling mounting table with respect to the planting shafts as the rotor case rotates. In a seedling planting device that is provided with a gear train adapted to transmit rotation that swivels at, the tip of the fixing member attached to the transmission case is moved from the inner wall of the rotation body case into the rotation body case. Provided to be inserted, this tip , Seedling planting apparatus rice transplanter, characterized in that provided so as not to rotate engage the sun gear in a rotating body case.