JPH1146535A - Seedling planting equipment - Google Patents

Abstract

(57) [Summary] [Problem] To use mat seedlings of standard size and
Dense planting can be performed by using an ordinary seedling planting mechanism. SOLUTION: A plurality of seedling take-out openings 7 for taking out seedlings from one of the seedling placing parts 4A of a seedling placing part 4 are formed at intervals in a width direction of the seedling placing part 4A. I do.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a seedling planting apparatus.

[0002]

2. Description of the Related Art Conventionally, one seedling take-out opening for taking out a seedling from the seedling placement part is provided for one of the seedling placement parts of a seedling placement base, and a stroke corresponding to the width of the seedling placement part is provided. The mat seedling placed on the seedling placing part is taken out from the seedling placing part by reciprocating right and left. More specifically, for example, in the case of a four-row seedling planting apparatus, by moving a seedling rest formed by juxtaposing four seedling rests side by side in a reciprocating manner, the four seedling rests are moved between the strips corresponding to the width of the seedling rest. We planted each plant. Then, the standard width of the mat seedling, that is, the standard place of the seedling placing part is 280 mm, and the interval between the adjacent seedling take-out openings is 300 mm.
cm.

As a seedling planting mechanism for taking out seedlings from the seedling outlet and planting the seedlings in a field scene, the seedlings taken out of the seedling outlet are planted at positions displaced to the left or right one side from the seedling outlet, and then the seedling outlet is placed. A technique for planting seedlings taken out from the seedlings at locations displaced to the left and right sides from the seedling removal port, and by repeating such a procedure, providing a mechanism to plant the seedlings in a staggered manner, and a technique of densely planting by reducing the streak. Conventionally known.

[0004]

However, in the case of the former technique among the above-mentioned conventional techniques, when performing dense planting in which the plant is planted in a smaller space than a standard space such as 300 mm, the width corresponding to the space between the spaces is reduced. Needless to say, it is necessary to form a seedling placing part on the one having the mat, and it is necessary to prepare a mat seedling having a width corresponding to the length of the streak. In other words, it is necessary to prepare a non-standard mat seedling. For this purpose, a nursery box for growing the non-standard mat seedling is prepared, or the standard mat seedling is cut to obtain a desired mat seedling. It is necessary to prepare mat seedlings having a size of, and it takes time and cost to prepare mat seedlings as compared with the case of preparing standard mat seedlings.

[0005] In the latter technique, a standard size mat seedling can be densely planted. However, since the planting claws are swung left and right to plant the seedlings in a staggered manner, the seedling planting mechanism is very expensive. It was complicated.

[0006] An object of the present invention is to enable dense planting using mat seedlings of a standard size and an ordinary seedling planting mechanism.

[0007]

The features, functions and effects of the first aspect of the present invention are as follows.

[Features] A plurality of seedling outlets for taking out seedlings from one of the seedling placing portions of the seedling placing stand are formed at intervals in the width direction of the seedling placing portion. On the point.

[0009] According to the first aspect of the present invention, a plurality of seedling take-out openings are provided for a single seedling placing portion, which are juxtaposed in the width direction of the seedling placing portion at intervals, and placed on the seedling placing portion. Since multiple seedlings can be taken out from one mat seedling that has been made, the interval between the seedlings becomes the interval of the seedling take-out opening, and the width between the strips can be made smaller than the width of the seedling placement part, that is, the width of the mat seedling. it can. This means, for example, that the width is 280 mm
If a standard size mat seedling is used and two seedling outlets are arranged at 140 mm intervals, the gap between the seedling outlets between the strips while using the standard size mat seedling, that is, It can be 140 mm.

In addition, since it is only necessary to take out the seedlings from the respective seedling taking-out openings and simply plant them in the field scene, there is no need for a complicated plant for planting the seedlings in a staggered manner as a seedling planting mechanism, and it is sufficient to use a general one. .

[Effects] Therefore, according to the first aspect of the present invention, dense planting can be performed with a reduced streak while using standard mat seedlings and using a general seedling planting mechanism. It became so.

According to the second aspect of the present invention, the features, actions,
The effects are as follows.

[Features] In the features of the first invention,
The present invention is characterized in that a seedling pressing tool is provided which presses, from above, a boundary portion of a target seedling portion to be taken out from an adjacent seedling taking-out opening of one mat seedling placed on the seedling placing portion.

According to the second aspect of the present invention, the mat seedling is pressed down from above by the seedling pressing tool so as to prevent the mat seedling from moving on the seedling mounting part with the reciprocating movement of the seedling mounting base. Therefore, it is possible to prevent the target seedling portion to be taken out from a portion other than the corresponding seedling taking-out opening.

Moreover, since the portion to be pressed by the seedling pressing tool is defined as the boundary between the portions of the seedling to be taken out from the adjacent seedling taking-out opening, the removal of the seedling from the seedling taking-out opening is not hindered by the seedling pushing tool.

[Effect] Therefore, according to the second aspect of the present invention, it is possible to satisfactorily take out one mat seedling from each of the plurality of seedling outlets while taking out one mat seedling from the plurality of seedling outlets. Was.

According to the third aspect of the present invention, the features, actions,
The effects are as follows.

[Features] In the features of the first and second aspects of the present invention, two seedling outlets are provided for the one seedling placing portion, and mat seedlings are taken out from these seedling outlets to be used in a field scene. To configure a seedling planting mechanism for planting, a pair of left and right circulating operation between a seedling outlet and a field scene is supported by a planting claw supported in a state of being protruded right and left outward by driving rotation about a left-right axis. Is arranged such that the planting claw protruding surfaces face each other in the left-right direction, and a planting case for driving and rotating the rotating case in a state located between the seedling take-out openings is arranged. .

[Action] For example, when two seedling outlets are formed for one seedling placement part, as a means for constituting a seedling planting mechanism for taking out mat seedlings from these seedling outlets and planting them in a field scene. From the conventional technique of the seedling planting mechanism, the planting claw supported in a state where it is driven to rotate left and right around the axis and projected to the left and right outwards is circulated between the seedling removal port and the field scene A pair of left and right rotating cases are arranged so that the surfaces on which the planting claws do not protrude are opposed to each other in the left and right direction, and both rotating cases are rotatably supported and driven to rotate while being located between the seedling removal openings. Means for arranging is considered. However, in this case, since the planting case and the two rotating cases are located between the left and right planting claws, the distance between the left and right planting claws cannot be shortened, and the strip cannot be reduced. . On the other hand, according to the third aspect of the present invention, a pair of left and right rotating cases are arranged in such a manner that the planting claw protruding surfaces oppose each other in the left and right direction, and the right and left planting cases are arranged between the seedling take-out openings. Since the claws are driven to rotate, only the planting case is disposed between the left and right planting claws, and the distance between the left and right planting claws can be shortened to obtain a predetermined gap. it can. For example, when planting a mat seedling having a width of 280 mm, the distance between the planting claws, that is, the left-right distance between the seedling outlets is 140 mm, and the seedling rest is reciprocated with a stroke of 140 mm in conjunction with the rotation of the rotating case. Thereby, planting with a line spacing of 140 mm can be performed.

[Effect] Therefore, according to the third aspect of the present invention, dense planting can be performed in which the width of the strip is half the width of the mat seedling.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A seedling planting apparatus A which is connected to a rear part of a self-propelled body via a link mechanism so as to be able to move up and down freely and constitutes a riding type rice transplanter is shown in FIGS. A main frame 1 having a pipe-like left-right orientation, and a feed case 2 connected to the left and right substantially central portions of the main frame 1.
And a frame body composed of six planting frames 3 in a front-rear direction connected to the main frame 1 at a set interval in the left-right direction. The seedling rest 4 having a forward tilting posture that can be driven and moved is attached, and five grounding floats 5 are attached to the bottom of the frame body to contact the field scene to support the weight of the device and to level the field scene. Stand 4
, The plant is provided with planting means for taking out the mat seedlings M placed on the seedling rest 4 by planting unit amount and planting them in a leveled field scene. Power for driving the planting device is input to the feed case 2 from the self-propelled body.

The seedling stand 4 is, as shown in FIG.
Mat seedlings M on which five seedling rest parts 4A on which mat seedlings M are placed are formed side by side in the left-right direction and placed on each seedling rest part 4A.
4 that regulates the position of the seedling in the left-right direction with respect to the seedling placing part 4A
B is formed, and the ridge 4B located between the adjacent seedling placing portions 4A also serves as a partition. The set stroke is half the value of the left and right width of the seedling placing part 4A. The power of the feed case 2 is used as a drive source for the seedling rest 4.
The means for driving is well known, and a description thereof will be omitted.

The planting means is provided on a rail 6 slidably supporting the lower end of the seedling rest 4 and the lower end of the placed mat seedling M. A seedling take-out port 7 is formed at a ratio, and ten seedling planting mechanisms 8 are provided to take out seedlings from each seedling take-out port 7 and operate in conjunction with the movement of the seedling placing stand 4 to plant the seedlings in a field scene. , Are configured to be planted at the same time.

The two seedling outlets 7 for the one seedling placing part 4A are formed at a set interval L1 in the left-right width direction of the seedling placing part 4A, and the set interval L1 is defined by the left and right sides of the seedling placing part 4A. It is half of the width L. When the seedling rest 4 is located at the left end of the set stroke, the right seedling outlet 7 is located at the right end of the seedling rest 4A, and the left seedling outlet 7 is at the left half of the seedling rest 4A. When the seedling rest 4 is located at the right end of the set stroke while the seedling rest 4 is located at the right end, the left seedling outlet 7 is located at the left end of the seedling rest 4A and the right seedling outlet 7 is located at the seeding rest. 4A
The positional relationship between the seedling placing stand 4 and the seedling take-out opening 7 is set so as to be located at the left end of the right half of. Note that the left-right gap L2 between the seedling outlets 7 of the adjacent seedling placing parts 4A is set to a value larger than the set gap L1.

As shown in FIG. 4, each of the seedling planting mechanisms 8 has a rotating case 9 attached to the planting frame 3 so as to be rotatable around a first left-right axis P1. The claw support case 10 is rotatably mounted around the second left-right axis P2 at each of the locations where the direction axis P1 is sandwiched and at the same distance from the left-right axis P1. After the planting claw 11 attached to the claw support case 10 passes through the seedling take-out opening 7 and takes out the seedling, the field scene occurs after the driving rotation in one direction F around the first left-right axis P1 of No. 9 A rotating means for rotating the claw support case 10 at an irregular speed in the opposite direction so as to circulate on a locus a to be planted by planting the rotating case 9; and a driving means for driving and rotating the rotating case 9 in one direction. ing.

The same seedling placing part 4 of the rotating case 9
The two corresponding to the seedling outlet 7 for extracting seedlings from A,
An intermediate portion is disposed in such a manner that a planted nail projecting surface for projecting the nail supporting case 10 is opposed in the left-right direction, and a surface opposite to the planted nail projecting surface is opposed in the left-right direction. Are mounted with the planting frame 3 located between them as a common mounting portion.

As shown in FIG. 6, the claw support case 10 is reciprocally movable along the planting claws 12 so that the planting claws 11 move toward the tip of the claw at the timing of entering the field scene. A seedling pushing tool 12 for pushing and separating the seedling held by the nail 11 toward the tip of the nail is attached. The means for driving the seedling pushing tool 12 is provided with a pushing spring 13 for urging the seedling pushing tool 12 toward the tip of the nail, and rotates relative to the nail supporting case 10 with the rotation of the rotating case 9, that is, By rotating around the rotating case 9 and acting on the swinging cam follower 14 interlocking with the seedling extruding tool 12, the seedling extruding tool 12 is moved by the force of the pushing spring 13 at the timing described above. A camshaft 15 for controlling the movement is formed.

As shown in FIG. 5, the rotating means includes a rotating case 9 attached to the planting frame 3 by a first left-right axis P1.
A support shaft 3a rotatably supported therearound and a fixed gear 16 having a first left-right axis P1 as an axis are provided. 3 is provided with a pair of first transmission gears 17 that rotate around the left-right direction axis P3. A pair of second transmission gears 19 that rotate unequally around the axis P4 is provided, and each of the rotation shafts 10a that rotates integrally with the claw support case 10 meshes with and engages with a corresponding one of the second transmission gears 19. Third transmission gear 2
0 is provided so as to rotate integrally with the rotating shaft 10a. Note that, as shown in FIG.
The cam groove 17a formed in the first transmission gear 17 and the first
With the rotation of the transmission gear 17, the second transmission is performed in such a manner that the transmission gear 17 is pressed by the cam groove 17a and slides along the cam groove 17a and is fitted into the cam groove 17a so as to rotate around the fourth left-right axis P4. And a projection 19a formed on the gear 19.

The driving means moves the five planting cases 21 interlocking with the feed case 2 to the main frame 1 in a state in which each of the five planting cases 21 is located between two seedling outlets 7 for one seedling placing portion 4A in plan view. A connecting rod 22 for connecting the camshafts 15 so as to revolve the camshaft 15 together with the rotating case 9 is provided, and the output shaft 21a of the planting case 21 is connected to the first left-right shaft center of the connecting rod 22. The rotation case 9 is configured to rotate in one direction by rotating the connecting rod 22 in one direction by connecting to a location where P1 passes.

Further, in the rotating case 9, the claw supporting case 10 caused by the backlash between the third transmission gear 20 and the second transmission gear 19 when the planting claw 11 takes out the seedling from the seedling placing stand 4. The third transmission gear 20 prevents rattling and swinging.
And a collision preventing means for preventing a collision between the motor and the second transmission gear 19. In this collision preventing means, a cam 23 is fixed to the rotating shaft 10a, and a cam arm 24 which is in contact with the cam 23 is swingably mounted on the rotating case 9, and the cam arm 24 is swung so as to contact the cam 23. A biasing spring 25 is provided, and when the claw support case 10 is located immediately before the seedling is taken out of the seedling placing table 4 with the rotation of the rotating case 9, the step 26 formed on the cam 23 is pushed by the cam arm 24 and the second step is performed. By rotating the second transmission gear 19 in advance, the second transmission gear 19 and the third
By bringing the teeth with the transmission gear 20 into contact in advance,
This is a means to prevent tooth collision.

As shown in detail in FIG. 3, the seedling placing stand 4 has a target seedling portion M1 to be taken out from two seedling taking-out openings 7 of one mat seedling M placed on the seedling placing portion 4A. , M2 is pressed from above to elastically press the boundary between M2 and M2. Each time the seedling rest 4 is positioned at the end of the set stroke, the seedling portion M to be taken out is set.
A feed belt 28 for feeding each of M1 and M2 independently to the seedling take-out port 7 side is attached.

The mounting structure of the seedling pusher 27 is such that columns 29 are erected at the lower and upper portions of the ridges 4B located on the left and right sides of each seedling placing portion 4A, and the bar 30 is extended across the left and right columns 29. The bar 3 is attached movably in the direction along the column 29, that is, in the direction toward and away from the seedling placing portion 4A.
And a spring 31 for urging the seedling pushing tool 2 toward the seedling placing part 4A.
7 is attached.

According to the above configuration, although the number of the seedling placing portions 4A of the seedling placing stand 4 is five, the interval between the strips is set to L1.
And a ten-row planting with the left-right spacing L2. In other words, dense planting can be performed in which one seedling take-out port 7 is provided for one seedling placing portion 4A and a plant is planted almost twice as much as a conventional planting device that performs five-row planting. as a result,
Even with the same amount of fertilizer applied, the amount of fertilizer (nitrogen) applied per plant is greatly reduced, and delicious rice can be produced.

By the way, when a standard mat seedling M having a left and right width of 280 mm is used, an example of the actual numerical values of the dimensions of each part is shown. The left and right width L of the seedling placing part 4A is 283 mm,
7 is 1.6 mm, the left-right gap L1 (set interval) between the two seedling outlets 7 with respect to one seedling placement part 4A is 140 mm, and the left-right spacing L2 between the seedling removal openings 7 of the adjacent seedling placement parts 4A is 140 mm. 200 mm and inter-stock L3 is 105 mm. According to the seedling planting apparatus according to the real numerical example, 40,000 plants can be planted per 10 ares.

[Alternative Embodiment] In the above embodiment, two seedling take-out ports 7 are provided for one seedling placing part 4A, but three or four seedlings are provided for one seedling placing part 4A. Three or more seedling outlets 7 may be provided and implemented.

In the above embodiment, the seedling pusher 27 is provided, but may be implemented without providing it.

[Brief description of the drawings]

FIG. 1 is a side view of a seedling planting apparatus.

FIG. 2 is a cutaway plan view of the seedling planting apparatus.

FIG. 3 is a cross-sectional view of a main part of a seedling mounting table.

FIG. 4 is a longitudinal sectional front view of the seedling planting mechanism.

FIG. 5 is a longitudinal sectional side view of a rotating case.

FIG. 6 is a longitudinal sectional side view of a claw support case.

FIG. 7 is an exploded perspective view of a cam mechanism.

[Explanation of symbols]

 Reference Signs List 4 seedling placing stand 4A seedling placing part 7 seedling taking-out port 8 seedling planting mechanism 9 rotating case 11 planting claw 21 planting case 27 seedling pushing tool M mat seedling M1, M2 Picking target seedling part P1 Left-right axis

Claims (3)

[Claims] 1. A seedling having a plurality of seedling take-out openings for taking out seedlings from one of the seedling placing portions of the seedling placing portion at a width direction of the seedling placing portion. Planting equipment. 2. The seedling pressing tool according to claim 1, further comprising: a pressing means for pressing a boundary portion of a target seedling portion to be taken out from an adjacent seedling taking-out opening of one mat seedling placed on the seedling placing portion from above. Seedling plant. 3. A seedling-planting mechanism for providing two seedling outlets for the one seedling-placed portion, extracting mat seedlings from these seedling outlets, and planting the mat seedlings in a field scene.
A pair of left and right rotating cases that circulate and operate the planting claw supported in a state where it protrudes to the left and right outward by driving and rotating around the left and right axis between the seedling take-out port and the field scene. The planting case for driving and rotating the rotating case in a state where it is arranged in a state facing in the left-right direction and is located between the seedling take-out openings, is arranged.
A seedling plant as described.