JPH07121174B2 - 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 planting device for planting a seedling in a field after dividing each seedling from a seedling mat on a seedling mounting table in a rice transplanter. .

[0002]

2. Description of the Related Art Conventionally, a rotary type seedling plant of this type, as described in, for example, Japanese Patent Publication No. 47-28104, projects laterally from a portion of a machine body near a seedling stand. A hollow rotating case is attached to the rotating shaft, and a plurality of planting shafts are axially supported on the outer peripheral portion of the rotating case in parallel with the rotating shafts. Among the face plates, the side plate on the side opposite to the machine body is penetrated to project in the opposite direction to the machine body, and at this projecting end, a planting body equipped with a seedling splitting claw, the seedling splitting claw is located on the seedling platform side. On the other hand, the rotating case and the non-rotating sun gear are arranged at the center position in the rotating case, and the intermediate gear is provided between the sun gear and the interlocking gear on the planting shaft. By gear transmission via Body, the rotational movement of the rotating case, is configured to pivot movement remains vertical posture facing direction of the seedling mounting table.

[0003]

However, in the conventional rotary type seedling planting apparatus, the intermediate gear is configured to mesh with both the non-rotating sun gear and the interlocking gear on the planting shaft at the same time. Therefore, there is a problem that the wear of each tooth in the intermediate gear is large and the durability of the intermediate gear is low.

An object of the present invention is to solve this problem without increasing the size and weight of the rotating case.

[0005]

In order to achieve this object, the present invention provides a hollow rotating case, which is provided on a rotating shaft projecting in a substantially horizontal direction from a portion of the machine body near the seedling mounting table. Of the left and right side plates on the side plate opposite to the machine body, the mounting boss is fitted to the rotary shaft by fitting, and a plurality of planting shafts are mounted on the outer peripheral part of the rotary case. It is supported in parallel with, and one end of each planting shaft is projected from the side surface of the rotating case, and the projecting end is provided with a planting body having a seedling dividing claw, and the seedling dividing claw is placed on the seedling mounting table side. In a seedling planting device that is mounted in a facing posture, the rotating case is provided with a non-rotating sun gear at a central position in the rotating case, and each of the planting shafts and In the middle of the rotation axis, Is rotatably supported in parallel with the rotation shaft, and a first intermediate gear that meshes with the sun gear and a second intermediate gear that rotates integrally with the first intermediate gear are provided on the intermediate shafts. The second intermediate gear is provided so as to mesh with the interlocking gear of each of the planting shafts, while the intermediate shaft has a distance from the rotating shaft to the intermediate shaft and a distance from the planting shaft to the intermediate shaft. The second intermediate gear and the interlocking gear in the second gear train of the first gear train and the second gear train are arranged at the same positions, and the second intermediate gear and the interlocking gear are the same as those of the sun gear and the first intermediate gear in the first gear train. The rotating case is disposed in a portion of the left and right side surfaces opposite to the machine body so as to form a space between the second intermediate gears in the second gear train. The mounting boss portion for the rotating shaft is provided. " It was.

[0006]

Embodiments of the present invention will now be described with reference to the drawings. In the drawings, reference numeral 1 indicates a transmission case in the body of a rice transplanter, and a boss body 2 horizontally projects laterally on the side surface of the transmission case 1. Into the boss body 2, a rotary shaft 3 which is rotationally driven by power transmission from an engine (not shown) mounted on the body of the rice transplanter is inserted, and the rotary shaft 3 from the boss body 2 is inserted. At the protruding end, an oval-shaped and hollow rotor body 4 is attached to the side plate 4a of the left and right side plates 4a, 4b of the rotary case 4 opposite to the transmission case 1. Attach the boss 4a 'to the rotary shaft 3
Mounted on the rotating case 4 by fitting
Is configured to rotate to the right of arrow A in a side view.

At the center of the rotating case 4,
A non-rotating sun gear 5, which is rotatably fitted to the boss body 2 and is rotatable with respect to the rotating case 4, is disposed. The sun gear 5 has an appropriate rotation phase with respect to the transmission case 1. It is non-rotatably locked by adjusting means (not shown). At both left and right ends of the rotating case 4, the supporting shaft 6 is rotatably supported by the rotating case 4 such that the supporting shaft 6 is parallel to the rotating shaft 3 at positions where the distance L from the rotating shaft 3 is equal. A hollow planting shaft 7 is rotatably fitted on the shaft 6, and one end of each planting shaft 7 is attached to a side plate 4a of the left and right side plates 4a, 4b of the rotating case 4 opposite to the transmission case 1. A planting body 8 having a seedling dividing claw 9 at the projecting end,
The seedling dividing claw 9 of the planting body 8 is attached to the seedling placing table 10 at the base end 8a of the planting body 8, while the rotary case 4 includes the rotary shaft 3 and the planting shaft 7. At an intermediate position, an intermediate shaft 11 is rotatably supported in parallel with the rotary shaft 3 and the planting shaft 7, and the sun gear 5 is always meshed with the sun gear 5 on the intermediate shaft 11. The first intermediate gear 12 having the same number of teeth is fitted to the intermediate shaft 11 so that the intermediate shaft 11 rotates once per one rotation of the rotating case 4.

On the other hand, the second intermediate gear 13 having the same number of teeth as the first intermediate gear 12 is fitted on the intermediate shaft 11, while the second intermediate gear 13 on the planting shaft 7 is formed on the intermediate shaft 11. 2 An interlocking gear 14 having the same number of teeth as that of the intermediate gear 13 and constantly meshing with the intermediate gear 13 is fitted so that the planting shaft 7 becomes the intermediate shaft 1.
It is configured to rotate once per one rotation. In this case, the intermediate shaft 11 is moved from the rotary shaft 3 to the intermediate shaft 1
1 and the distance from the planting shaft 7 to the intermediate shaft 1
In addition to the configuration in which the distance L2 up to 1 is arranged at the same position, the second intermediate gear 13 and the interlocking gear 14 meshing with the second intermediate gear 13 are coupled to the sun gear 5 and the first intermediate gear meshing with the sun gear 5. The left and right side surfaces of the gear 12 are arranged on the opposite side of the transmission case 1 so as to form a space portion a between the second intermediate gears 13 and are arranged in the space portion a. A mounting boss 4a 'for mounting the rotary case 4 on the rotary shaft 3 is provided.

In this structure, when the rotating case 4 revolves in the right direction of the arrow A by the rotating shaft 3, the first intermediate gear 12 meshing with the non-rotatable sun gear 5 with respect to the transmission case 1 becomes the rotating case. With the revolution of No. 4, the rotor rotates about the same rotation angle as the revolution in the right direction of arrow B. The planting shaft 7 that is interlocked with the first intermediate gear 12 via the second intermediate gear 13 and the interlocking gear 14 is opposite to the left direction of the arrow C, that is, the revolving direction of the rotating case 4 due to the rotation of the first intermediate gear 12. Since it rotates in the direction of rotation, the planting body 8 attached to the planting shaft 7 turns around the rotary shaft 3 with the seedling table 10 facing the direction.
During this turning motion, when the side facing the seedling mounting table 10 is descended from the top to the bottom, after splitting one seedling from the seedling mat on the seedling mounting table 10 at the tip 9a of the seedling dividing claw 9, It is planted in the field scene 15 in the vicinity of the lower limit of the lowering, and thereafter rises above the field scene 15.

In this case, the second intermediate gear 13
And the interlocking gear 14 with the center (0) of each of these gears.
Is configured as an eccentric gear that is eccentric from the rotation center of each of the shafts 11 and 7 by an appropriate dimension (e), so that the planting shaft 7 moves to the left along with the revolution of the rotating case 4 to the right. During the one rotation, the rotation rotation is non-constant speed rotation that is faster or slower than the rotation speed of the rotating case 4 due to the diameter difference between the eccentric type gears 13 and 14.

Therefore, the time when the rotation speed of the non-uniform rotation of the planting shaft 7 to the left with respect to the revolution of the rotating case 4 becomes slower, as shown in FIG. The time when the rotation speed becomes faster among the non-constant rotation of the planting shaft 7 to the left, the time when the planting shaft 7 descends so as to approach 15 and the time when the planting shaft 7 rises so as to approach the ascent limit of the planting body 8 respectively. By setting so that each planting body 8 descends so as to approach the field scene 15, the planting body 8 rotates to the left rather than the revolution of the rotating case 4 to change its posture downwards to the upper limit. When approaching, it moves to the left more than the revolution of the rotating case 4 and freely swings around to rotate its posture so as to change its posture upward.
The closed loop of the locus of movement of the tip 9a of the seedling dividing claw 9 is a closed loop curve 16 which is elongated in the vertical direction and is elongated as shown by the chain double-dashed line in FIG.

It should be noted that the number of the planting bodies 8 is not limited to two in the above-mentioned embodiment, and it is also possible to arbitrarily make a plurality of three or more plants in the circumferential direction, and the planting body 8 is directed to the field scene 15. The timing at which the posture of the planting body 8 is changed upward when descending can be arbitrarily set by adjusting the rotational phase position of the sun gear 5 with respect to the transmission case 1. Further, as shown in FIG. 2, the mounting base end portion 8a of the planting body 8 to the planting shaft 7 as shown in the embodiment of the drawing is appropriately dimensioned in the direction of the rotating case 4 rather than the tip 9a of the seedling dividing claw (S). ), The tip 9a of the seedling dividing claw can be prevented from colliding with the base end 8a of the planting body 8, and the rotary shaft 3
Since the distance L from the planting shaft 7 to the planting shaft 7 can be shortened, the rotating case 4 can be downsized.

[0013]

INDUSTRIAL APPLICABILITY As described above, according to the present invention, in the rotary type seedling planting apparatus, each plant attached to the rotating case is placed in a posture in which it is oriented toward the seedling table by the rotating motion of the rotating case. That is, the first gear train including the sun gear and the first intermediate gear that mesh with each other and the second gear train including the second intermediate gear and the interlocking gear that also mesh with each other Since the first intermediate gear meshes only with the sun gear and the second intermediate gear meshes only with the interlocking gear, the wear of the teeth in both of these intermediate gears is prevented by the conventional method. As described above, the intermediate gear can be significantly reduced as compared with the case where both the sun gear and the interlocking gear are meshed at the same time, and the durability thereof can be surely improved.

By the way, an intermediate shaft for pivotally supporting the first intermediate gear in the first gear train and the second intermediate gear in the second gear train is planted from an intermediate portion between the rotary shaft at the center of the rotating case and the planting shaft. In the case where the sun gear and the first intermediate gear in the first gear train are large in diameter when they are arranged in the portion that is eccentric to the shaft side, the planting shaft is correspondingly arranged with respect to the planting shaft. Since the distance from the rotating shaft must be increased so that the first intermediate gear does not interfere with each other, the rotating case becomes large. Further, when the intermediate shaft is arranged in a region eccentric to the rotary shaft side from a region intermediate between the rotary shaft at the center of the rotary case and the planting shaft, the second intermediate gear in the second gear train and Since the diameter of the interlocking gear increases, the distance from the planting shaft to the outer peripheral surface of the rotating case must be increased, which also leads to an increase in the size of the rotating case.

On the other hand, according to the present invention, as described above,
By arranging the intermediate shaft at a position where the distance from the rotary shaft to the intermediate shaft and the distance from the planting shaft to the intermediate shaft are equal, it is possible to reduce the diameter of each gear in both gear trains. Therefore, both the distance from the rotation axis to the planting axis and the distance from the planting axis to the outer peripheral surface of the rotating case can be minimized. Moreover, in the present invention, the second intermediate gear and the interlocking gear in the second gear train of the first gear train and the second gear train are provided on the left and right side surfaces of the sun gear and the first intermediate gear in the first gear train. Since the second intermediate gear is arranged so as to form a space between the second intermediate gears in the second gear train on the side opposite to the machine body, the second intermediate gear becomes the second intermediate gear. Can be prevented from interfering with a support portion or the like for non-rotatably supporting the sun peeling gear, as in the case of disposing the sun gear on both sides of the body of the sun gear. Since the distance from the rotating shaft to the intermediate shaft can be reduced, both the distance from the rotating shaft to the planting shaft and the distance from the planting shaft to the outer peripheral surface of the rotating case can be minimized. In combination with The width of size and weight reduction can be achieved. In addition to this, according to the present invention, by disposing the mounting boss portion for mounting the rotating case to the rotating shaft in the space formed between the second intermediate gears,
Since the space can be used as a mounting portion for the rotating shaft of the rotating case, the rotating case can be firmly mounted on the rotating shaft without significantly increasing the protrusion of the mounting portion from the rotating case.

[Brief description of drawings]

FIG. 1 is a front view of a seedling planting device according to 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 in FIG.

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

FIG. 5 is a diagram showing a rotating state of an eccentric gear.

[Explanation of symbols]

 1 Transmission Case 3 Rotating Shaft 4 Rotating Case 5 Sun Gear 7 Planting Shaft 8 Planting Body 9 Seedling Dividing Claw 9a Tip of Seedling Dividing Claw 11 Intermediate Shaft 12 First Intermediate Gear 13 Second Intermediate Gear 14 Interlocking Gear 16 Motion Trajectories 4a, 4b Left and right side plates of the rotating case 4a 'Mounting boss a Space

Claims (1)

[Claims] To 1. A rotary shaft protruding from a portion near the seedling mounting table of the machine body in a substantially horizontal sideways, the hollow rotary case, the
Out of the left and right side plates of the rotating case,
Fit the mounting boss provided on the opposite side plate to the rotating shaft.
By mounting the plurality of planting shafts on the outer peripheral portion of the rotating case in parallel with the rotating shafts, one end of each planting shaft is projected from the side surface of the rotating case, In the seedling planting device, wherein the planting body having the seedling dividing claws is mounted in a posture in which the seedling dividing claws face the seedling mounting table side, in the rotating case, the rotating case is located at a central position. A non-rotating sun gear is arranged with respect to the rotating case, and an intermediate shaft is rotatably supported in parallel with the rotating shaft at a position substantially intermediate between the planting shaft and the rotating shaft. A first intermediate gear that meshes with the sun gear and a second intermediate gear that rotates integrally with the first intermediate gear are provided on the top, and the second intermediate gear is used as the interlocking gear for each planting shaft. While engaging the intermediate shaft from the rotary shaft And distance to the axis, arranged at a distance and are equal position from the planting axis to the intermediate shaft, further, a second tooth of said first gear train and the second gear train
The second intermediate gear and the interlocking gear in the train are provided with the first teeth.
On the left and right side surfaces of the sun gear and the first intermediate gear in the train
Among the parts on the side opposite to the machine body, the second gear train
The second intermediate gears are arranged so as to form a space between them.
The rotary shaft of the rotary case in the space.
A seedling planting device for a rice transplanter, which is provided with a mounting boss portion .