JPH0937621A - Seedling-planting unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the use of a rotary case in the rotary type planting unit in order to increase the planting density, as the interval is secured between plants, by transplanting the seedlings in the tottering-step pattern. SOLUTION: This planting unit comprises a rotary case which is rotated as one body together with the driving shaft for planting, a couple of the seedling-planting cases which rotate reversely to the rotary case and are attached each to both sides of the cease and seedling separators 14 which are fixed to these planting ceases, respectively. In the seedling separators 14 on the couple of the planting cases, one is made movable transversely to one side, while the other is made movable transversely to the other side.

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 used in a rice transplanter or the like.

[0002]

2. Description of the Related Art In recent years, as disclosed in Japanese Patent Laid-Open No. 4-365408, staggered seedlings are planted to appropriately secure the spacing between seedlings and to increase the density of seedlings to increase the yield. Research is ongoing. The aforementioned publication discloses a rotary-type seedling planting device that operates so as to draw the trajectory of the tip of the seedling separator in a three-dimensional space in order to plant seedlings.

[0003]

In the above-mentioned conventional seedling planting apparatus, the rotation axis of the seedling planting case is provided so as to be inclined with respect to the rotation axis of the rotary case, and the locus of the tip of the seedling separating tool is set. Since it is designed to be drawn in a three-dimensional space, the rotating case has a configuration in which it is bent to the left and right, and a rotary type seedling planting device that can draw the trajectory of the tip of the seedling separating tool in the conventional two-dimensional plane. It is not economical because a rotating case cannot be used.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the conventional device, the present invention is directed to a rotary case provided so as to rotate integrally with a planted drive shaft, and both ends of the rotary case. Each of the left and right sides of the section is provided with a seedling planting case provided with one group so as to rotate in a direction opposite to the rotation direction of the rotating case, and a seedling separating device fixed to the seedling planting case. , One of the two seedling planting cases can be moved to one of the left and right sides, and the other seedling planting case of the other case can be moved to the other side. And a seedling planting device.

[0005]

According to the seedling planting apparatus of the present invention, one seedling planting case is provided on each of the left and right sides of both ends of the rotating case, and the two seedling planting cases are provided. Since one of the seedling separating tools can be moved to the left and right sides and the other seedling separating case can be moved to the other side of the left and right sides, two rotating seedlings can be planted when the rotating case rotates. The attached case alternately picks up seedlings from one seedling take-up port and plant the seedlings in the topsoil of the field, but the seedling separation tool of one of the seedling-applied cases left and right sides after passing through the seedling take-out port. While descending while moving to plant the seedlings in the field, the seedling separating device of the other case with seedling planting moves to the other side on the right and left after descending and planting seedlings in the field. The seedlings are then staggered in the field.

Therefore, this seedling planting device is economical because it can use the rotating case of the rotary type seedling planting device which can draw the locus of the tip of the seedling separator in the conventional two-dimensional plane. In addition, the seedlings can be planted in a staggered manner in the field to secure the space between the seedling-planted plants and improve the seedling-planting density to increase the yield.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment in which a seedling planting device of the present invention is mounted on a riding rice transplanter will be described below with reference to the drawings. In the riding rice transplanter 1, the seedling planting machine 7 is mounted on the rear side of the traveling vehicle body 5 having a pair of left and right front wheels 3.3 and rear wheels 4.4 which are driven and rotated by the engine 2 via an elevating link device 6. It is installed. The traveling vehicle body 5 is provided with a control seat 8 and a steering handle 9.

In the seedling planting machine 7, a planting transmission frame 10 which is transmitted from the traveling vehicle body 5 side serves as a frame of the seedling planting machine 7, and each of the seedling planting machines 7 is provided therein. It is provided with a power transmission mechanism to the operating portion. The planted transmission frame 1
A seedling stand 11 is provided so that the front side of the plant is inclined so that the front side is higher. The seedling stand 11 is linked to the left and right reciprocating mechanism in the planting transmission frame 10 to reciprocate left and right. Further, the planting device 13 is attached to the planting drive shaft 12 projecting to both sides of the rear end side of the planting plant transmission frame portions 10b, 10b extending rearward of the planting transmission frame 10. There is.
Therefore, the seedling placing table 11 reciprocates left and right, and the seedlings on the seedling placing table are provided at the lower end of the seedling placing table and the seedling take-out port 15a of the seedling receiving frame 15 is provided.
, And the seedling separating tool 14 of the planting device 13 rotates while drawing a predetermined locus to separate and hold the seedlings supplied to the seedling take-out port 15a. When it reaches the field, it is released and planted. In addition, below the seedling planting machine 7, the center float 1 is provided at the center.
6a, side floats 16b, 16b are attached to both left and right sides so as to be rotatable around left and right lateral axis axes, respectively.

The structure of the seedling planting device 13 will be described below.
First, the rotation case 20 is attached to the planting drive shaft 12 projecting to both sides of each rear end side of the seedling planting device transmission frame portions 10b and 10b.
Install so as to rotate together. In the rotating case 20, a sun gear 21 is rotatably provided on the planting drive shaft 12,
In addition, the sun gear 21 is connected to the metal 22 fixed to the side surface of the transmission frame portion 10b so as not to rotate.
Also, a counter gear 23.2 that meshes with the sun gear 21.
3 is rotatably provided in the rotating case 20, and further, inside the both ends of the rotating case 20, seedling planting case rotating gears 24, 24 meshing with the counter gears 23, 23 are provided. There is. The seedling-planting case rotating gears 24, 24 are attached to the seedling-planting case rotating shafts 26, 26 that are rotatably fitted to the cam shafts 25, 25 provided in the rotating case 20 so as not to rotate. The key is used to rotate integrally. Attachment plates 27, 27 are fixed to the end portions of the seedling planting case rotating shafts 26, 26 that have come out of the rotating case 20.
・ Cases 28 with seedlings 28 ・ 28 lower case 29.2
9 is fixed with a bolt. The cam shafts 25, 25 extending outside the rotary case 20 are inserted into the lower cases 29, 29 and support the lower cases 29, 29 via bearings. The planting drive shaft 12, the sun gear 21, the counter gears 23, 23 and the seedling planting case rotating gears 24, 24 are provided in parallel with each other. The rotary case of the rotary type seedling planting device for drawing the trajectory of the tip of the seedling separating device in a conventional two-dimensional plane has the same configuration. Further, the seedling planting cases 28, 28 rotate in a direction opposite to the direction of rotation of the rotating case 20, so that the rotating case 20 ...
Even if is rotated by the planting drive shaft 12, the same posture is maintained.

Further, on the cam shafts 25, 25, two laterally rotating cams 30, 30; 3 in the lower case 29, 29 are provided.
0.30 and one seedling pushing cam 3 located between them
1 and 31 are provided so as to rotate integrally with the cam shafts 25, 25 using a key. Left and right lateral rotation cams 30, 30;
30 and 30, the left and right ends of rotating plates 33 and 33 screwed to the horizontal rotating shafts 32 and 32 are attached to the steel ball 3.
4.34; provided so as to abut with 34.34 interposed. The steel balls 34, 34; 34, 34 are rotatably fitted in hemispherical holes provided in the rotating plates 33, 33. The lateral rotation shafts 32, 32 are supported by the lower cases 29, 29 via bearings with their axes oriented in the vertical direction, and the upper ends thereof are the upper cases of the seedling plant cases 28, 28. -One end of a coiled spring 36, 36 is fixed to the bottom of the case 35, and the lower end is engaged with the other end of the spring 36.
The lateral rotation shafts 32, 32 are urged so that the upper casings 35, 35 contact the inner wall of 29 to rotate toward the front side. The lateral rotation shaft 32 is the lateral rotation cams 30 and 30.
It is positioned so as to enter the space between the seedlings and immediately behind the seedling pushing cam 31. The shaft portion of the lateral rotation shaft 32 immediately after the seedling pushing cam 31 has a U-shaped notch on the front side in side view.

Accordingly, the lateral rotation shafts 32, 32 are rotated by the lateral rotation cams 30, 30, and the seedling planting cases 28, 28 are attached.
Upper case 35.35 of the seedling separating device 14,14 fixed to the upper case 35.35 moves laterally with respect to the lower case 29.29. To do. still,
The upper case 35 of one of the seedling planting cases 28 (A) has a posture in which the tip of the seedling separating tool 14 faces the front (seedling take-out port 15).
(the posture toward a)), the upper case 35 of the other seedling planting case 28 (B) is rotated laterally in the direction away from the rotary case 20, that is, to the left and right. The tip of the seedling separating tool 14 rotates laterally in a direction approaching the rotating case 20, that is, inward and laterally inward from a frontal attitude (an attitude toward the seedling take-out port 15a). In addition, seedling planting case 28.2
The lateral rotation of the upper case 35 of FIG.
After the tip of 4 has passed through the seedling take-out port 15a and before it reaches the field scene, the tip part of the seedling separating tool 14 is moved to the top of the field and the tip of the seedling separating tool 14 moves to the top. Lateral rotation is restored until it returns to the outlet 15a.

Cases with seedlings 28, upper case 35 of 28
A seedling separating tool 14/14, which is formed into a fork by bending a wire into a U shape, is fixed to 35.
Seedling pushers 37, 37 are provided on the lower side of the tip end of the so as to project toward the tip of the seedling separator. Seedling extrusion tool 3
The rod-shaped portions 7 and 37 are inserted into the upper casings 35 and 35, and the spring 3 is provided between the shaft end portion and the inner wall of the casing.
The seedling pushing tools 37, 37 are urged so as to project from the inside of the case by interposing 8.38. Also, the seedling pushing device 37
.Seedling extrusion arm 39.39 at the shaft end in the 37 case
The front end of is engaged. Seedling extrusion arm 39 ・ 39
At the base of the upper case 35, 35 with pins 40, 40
It is anchored inside. The rotation of the seedling pushing arms 39, 39 around the pins 40, 40 is operated by the seedling pushing cams 31; 31 in the lower cases 29, 29.
That is, cam followers 41, 41 pivotally mounted in the lower cases 29, 29 abut the seedling pushing cams 31; 31, and the tip end of the cam followers 41, 41 is a lateral rotation shaft 32.
32 into the U-shaped notch, and the lateral rotation shaft 32.
The lower end of the interlocking rod 42, 42 slidably fitted in the hole formed along the axis of 32 is abutted from below, and the upper end of the interlocking rod 42, 42 moves the seedling pushing arm 39, 39 upward. It is designed to be pushed up and rotated. Seedling separation tool 1
Before the tip part of 4 approaches the seedling take-out port 15a, the seedling pushing tools 37, 37 retract, and when the tip part of the seedling separating tool 14 enters the topsoil of the field, it operates to project, and the seedling separating tool 14 The seedlings retained at the tip of the are released into the topsoil.

The operation of the seedling planting device configured as described above will be described below. First, when the riding rice transplanter 1 is moved to the seedling planting field and reaches the planting start point, the elevating link device 6 is operated to descend and the floats 16a, 16b, 1 of the seedling planting machine 7 are operated.
6b is kept in contact with the farm scene. Then, the seedling planting clutch is turned on and the seedling planting machine 7 is set in the transmission state, and the seedling planting work run is started.

At this time, the seedling planting device 13 is equipped with a rotating case 2
0 One seedling planting case 28 is provided on each of the left and right sides of both ends, and one seedling separating tool 14 of the two seedling planting cases is provided.
Can be moved to one side of the left and right, and the seedling separating tool 14 of the other case with seedling planting can be moved to the other side of the left and right. Therefore, when the rotating case 20 rotates, two seedling planting cases are provided. 28 ・ 28
Alternately takes seedlings from one seedling take-off port 15a at the lower end of the seedling placing table 11 to plant the seedlings on the topsoil of the field. The seedling separating tool 14 of one of the seedling planting cases 28 has a seedling takeoff port 15a. After moving through one side, it descends while moving to the left and right sides to plant seedlings in the field, and the seedling separating tool 14 of the other seedling planting case 28 moves to the other side on the right and left sides after passing through the seedling taking port 15a. The plant descends to plant seedlings in the field, and the seedlings are planted in a staggered manner in the field.

As described above, the seedling planting device 13 is provided with a rotary case provided so as to rotate integrally with the planting drive shaft 12.
The seeds 20, seedling planting cases 28, 28 provided on the left and right sides of the opposite ends of the turnable case 20 so as to rotate in opposite directions to the direction of rotation of the turnable case 20, and the seedlings. Planted case 28 ・
And a seedling separating tool 14 fixed to 28.
Since one seedling separating tool 14 of the base seedling planting case can be moved to the left and right side and the other seedling separating tool 14 of the seedling planting case can be moved to the left and right side, It is economical to use a rotating case of a rotary type seedling planting device that draws the trajectory of the tip of the seedling separator in a two-dimensional plane, and it is economical to plant the seedlings in a staggered manner in the field. It is possible to increase the yield by improving the seedling planting density while properly securing the planted plant spacing.

[Brief description of drawings]

FIG. 1 is a side view of a riding rice transplanter.

FIG. 2 is a partial cross-sectional side view of the seedling planting device.

FIG. 3 is a sectional side view of a main part of the seedling planting device.

FIG. 4 is a partial cross-sectional plan view of the seedling planting device.

FIG. 5 is a rear view of the seedling planting device.

[Explanation of symbols]

 12: Drive shaft with planting 13: Seedling planting device 20: Rotating case 28/28: Case with seedling planting 14/14: Seedling separator

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 000006851 Yanmar Agricultural Machinery Co., Ltd. 1-32, Chaya-cho, Kita-ku, Osaka-shi, Osaka (72) Inventor Tatsuya Konishi 1-40, Nisshin-cho, Omiya-shi, Saitama 2 Biological system identification Industrial Technology Research Promotion Organization (72) Inventor Makoto Honmoto, No. 1 Hachikura, Tobe-cho, Iyo-gun, Ehime Prefecture, Engineering Department, Iseki Agricultural Machinery Co., Ltd. (72) Kuhei Ouchi 64, Ishizukita-machi, Sakai-shi, Osaka Kubota Sakai Co., Ltd. In-house (72) Inventor Toshihiko Kato, 667 Izamiya-cho, Higashi-Izumo-cho, Yatsuka-gun, Shimane Prefecture 1 Mitsubishi Agricultural Machinery Co., Ltd. Within

Claims (1)

[Claims] 1. A rotating case provided so as to rotate integrally with a planting drive shaft, and one side of both ends of the rotating case so as to rotate in a direction opposite to the rotating direction of the rotating case. A seedling planting case provided for each one and a seedling separating tool fixed to the seedling planting case are provided, and one seedling separating tool of the two seedling planting cases is provided on the left and right. A seedling planting device characterized in that it is movable to one side and the seedling separating device of the other case with seedling planting is movable to the other side on the left and right.