JP2003125619A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve seedling-planting precision by avoiding the inconvenience that causes the deviation in the feed pitch in the feed roller in a seedling transplanter that transplants seedlings as the seedlings of a belt form is conveyed with the feed rollers. SOLUTION: The seedling transplanting part 8 conveys a series of seedlings in a belt form in a prescribed direction, then separates the seedlings into small pieces 4 of seedling at the terminal of the conveyer transplants the small pieces of the seedlings. In this case, the seedling transplanter is equipped with the belt seedling holder 17 that holds the belt seedlings freely drawably, the feed roller 29 for conveying the belt seedling toward the position at which the small pieces of seedlings are separated and the posture-maintaining roller 31 for maintaining the posture of the belt seedlings on the upper side of the route of the feed roller 29.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a belt seedling planting device for holding a plurality of seedlings in series.

[0002]

2. Description of the Related Art Generally, in planting rice seedlings and the like, a mat-shaped mat seedling is placed on a seedling table which reciprocates left and right, and is suitable from the lower end of the seedling table. The mat seedling method, which scrapes several planted seedlings and plants them in the field, is widely adopted, but this method does not allow a large amount of seeds for raising mat seedlings, and the seedlings are not allowed at the time of scraping. There is an inconvenience to hurt. Therefore, a belt seedling method is proposed in which a belt seedling that holds a plurality of seedlings in a row is transported in a predetermined direction, and is separated into planting pieces at the transport end portion and planted in a field. According to this, it is not possible to reduce the required seed amount, and it is possible to prevent damage to the seedlings during planting.

[0003]

However, the above-mentioned belt seedling includes an element that causes conveyance disturbance, such as slackening during conveyance or a change in conveyance resistance due to the tension of roots, especially in the vicinity of the feed roller. If the feeding posture of the belt seedlings is disturbed, the feeding pitch of the feeding roller is deviated, and the planting accuracy is lowered.

[0004]

Means for Solving the Problems The present invention was created for the purpose of solving these problems in view of the above circumstances, and a belt seedling for holding a plurality of seedlings in a series, A seedling planting device that transports in a predetermined direction and separates into planting pieces at the transporting end portion to plant in a field,
The seedling planting device includes a belt seedling holding portion that holds the belt seedling so that the belt seedling can be freely fed, a feed roller that conveys the belt seedling held by the belt seedling holding portion toward a planting piece separating position, An attitude maintaining member for maintaining the transportation attitude of the belt seedling on the side of good conveyance of the feed roller. That is, by maintaining the conveyance posture of the belt seedlings on the side of good conveyance of the feed roller, it is possible to avoid the inconvenience that the feed pitch of the feed roller is deviated, and improve the planting accuracy. Further, the posture maintaining member is a roller member arranged on the opposite side of the feed roller with a belt seedling conveying path as a boundary. In this case,
It is not permissible to give a proper tension to the belt seedlings to stabilize the conveyor posture of the belt seedlings, the winding angle of the belt seedlings with respect to the feed roller can be increased to prevent pitch deviation of the feed roller, and the posture maintaining member By configuring the roller member as a roller member, the structure can be simplified. In addition, the belt seedling holding portion is configured to hold the belt seedling wound in a roll shape so as to be able to be fed out, and contacts the outer periphery of the belt seedling wound in a roll shape to a predetermined value for the belt seedling. It is characterized in that it is provided with a feeding resistance member for giving the feeding resistance of. In this case, it is not possible to prevent excessive feeding of the belt seedlings due to inertia, and it is possible to give an appropriate tension to the belt seedlings and stabilize the transport posture of the belt seedlings.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Next, one of the embodiments of the present invention will be described with reference to the drawings. In the drawings, 1 is a belt seedling, and the belt seedling 1 is obtained by sowing seed rice on a seedling-growing sheet body 2 formed in a long strip, and then raising the seedlings by hydroponics for a predetermined period. is there. The belt seedling 1 obtained by raising seedlings holds the planted seedlings 3 in parallel at a predetermined interval in the longitudinal direction and separates into a large number of planted pieces 4 including at least one planted seedling 3. It is freely formed. That is, each planting piece 4 supports the at least one seedling-growing sheet piece 5 that holds at least one planting seedling 3, and a support sheet that reinforces the seedling-growing sheet piece 5 and that supports the seedling-growing sheet pieces 5 in a continuous manner. 6 and 6 are adhered in a polymerized state, and further the support sheet 6
Has perforations 7 formed at predetermined intervals in the longitudinal direction for facilitating separation in 4 units of planting pieces.
The seedling-growing sheet pieces 5 do not need to be completely separated, and if the separation is easy, some of the seedling-growing sheet pieces 5 may be in a connected state.

The seedling-growing sheet piece 5 is made of a soft porous material and is formed into a rectangle having a predetermined thickness dimension.
The support sheet 6 is made of a flexible film material and is formed in a long strip shape. Then, the seedling-growing sheet body 2 is formed by adhering a large number of the seedling-growing sheet pieces 5 in parallel on the support sheet 6 with their long sides adjacent to each other. 5, the lower side of the seed padding hole 5a formed on one end side is covered with the supporting sheet 6, and the engaging hole 5b formed on the other end side of the seedling raising sheet piece 5 is the engaging hole 6a on the supporting sheet 6 side. Be communicated to.

Next, the procedure for producing the belt seedling 1 will be described.
First, after storing seed paddy in the seed padding storage holes 5a of each seedling raising sheet piece 5, the seedling raising sheet body 2 is wound into a roll so that the seedling raising sheet piece 5 faces the winding center side. next,
The roll-shaped seedling-growing sheet body 2 is placed in a cultivation container (not shown) with the seed-padded storage hole 5a side facing up, and seedlings are grown by hydroponics for a predetermined period. In the seedling-raising sheet body 2 that has been managed for raising a seedling for a predetermined period, the root portion 3a of the planted seedling 3 extends downward along the seedling-raising sheet piece 5, and the leaf portion 3b is the upper end portion (opening 5c) of the seedling-raising sheet piece 5. From above, the belt seedlings 1 are shipped by observing their growth condition.

On the other hand, 8 is a planting section (seedling planting device) which is connected to the rear part of the body of the riding rice transplanter through a lifting link mechanism 9, and the planting section 8 is the tip of the lifting link mechanism 9. A link holder 11 connected to the link holder 11, a planting portion frame 12 that is rollably connected to the link holder 11, and a rolling ammunition 13 provided between the link holder 11 and the planting portion frame 12. A plurality of planter cases 14 projecting rearward from the planting part frame 12, an apron 15 provided above the planter cases 14 in the left-right direction, and vertically swingable below the planter cases 14. A float 16 provided, and a belt seedling holding portion 17 that holds the roll-shaped belt seedling 1 so that it can be drawn out freely,
The belt seedling 1 is conveyed to the apron 15 and is provided with a belt seedling transporting section 18, and a planting claw 19 for taking out the seedling from the seedling take-out port 15a of the apron 15 and planting it in a field. As the planting claw 19, a mat seedling provided with a pair of left and right claw portions 19a arranged in parallel at a predetermined interval and a fork 19b for pushing the seedling held by the claw portion 19a into the soil. Is diverted.

The belt seedling holding portion 17 is a planting portion frame 1.
Arm support shaft 2 provided in the left-right direction at the upper end of 2
0, a seedling support arm 21 rotatably provided on the arm support shaft 20, a seedling support shaft 22 protruding one side from the tip of the seedling support arm 21, and the seedling support shaft 22 rotating It is provided with a cylindrical seedling holder 23 that is freely supported, and the roll-shaped belt seedling 1 held by the outer peripheral portion of the seedling holder 23,
The seedling holder 23 is configured to be fed by the driven rotation. The seedling holder 23 is configured to be freely inserted into and removed from the seedling support shaft 22, and is retained by a handle 24 screwed to the tip of the seedling support shaft 22.

Below the belt seedling holding portion 17, there is provided a feeding resistance roller (feeding resistance member) 25 which gives the belt seedling 1 a predetermined feeding resistance. The feeding resistance roller 25 includes a roller frame 26 protruding upward from the planting part frame 12.
It is rotatably provided at the tip of the roller, and its roller width is substantially equal to the width of the belt seedling 1. When the belt seedling 1 wound around the seedling holder 23 is set on the seedling support shaft 22, the belt seedling 1
The seedling support arm 21 rotates downward under the load
The outer peripheral portion of the sheet comes into contact with the feeding resistance roller 25. In this state, the weight of the belt seedling 1 (seedling support arm 21, seedling holder 2
(Including load such as 3) becomes rotation resistance of the seedling holder 23,
Appropriate feeding resistance (brake) is given to the fed belt seedling 1. As a result, excessive feeding of the belt seedlings 1 due to inertia can be prevented and the conveying posture of the belt seedlings 1 can be stabilized. Further, as the winding diameter of the belt seedlings 1 becomes smaller, the feeding resistance becomes smaller. This makes it possible to avoid inconveniences such as the belt seedling 1 being cut in the middle.

The belt seedling conveying section 18 is a planting section frame 1
2, a plurality of seedling transfer frames 27 standing upright at a predetermined interval in the width direction, a seedling feeding drive shaft 28 rotatably installed on the seedling feeding frame 27, and the seedling feeding drive shaft 28.
To the feeding roller 29, a pressing roller 30 that presses the belt seedling 1 against the feeding roller 29, and a posture maintaining roller (posture maintaining member) that maintains the posture of the belt seedling 1 on the upstream side of the conveyance of the feeding roller 29. ) 31 and.

The power of the seedling feeding drive shaft 28 is taken out from one end of the planted transmission shaft 33 installed in the planted drive case 32, and the first chain transmission mechanism 34 and the second chain transmission mechanism 3 are taken.
5 and the gear transmission mechanism 36 are transmitted to the seedling feeding drive shaft 28. The feed roller 29 forcibly feeds the support sheet surface of the belt seedling 1, and a plurality of engaging protrusions 29a are formed on the outer peripheral portion thereof at predetermined intervals in the circumferential direction.
The engagement protrusion 29a engages with the engagement holes 5b and 6a of the belt seedling 1, and forcibly feeds the belt seedling 1 downward as the feed roller 29 is driven to rotate. Further, flanges 29 for preventing lateral displacement of the belt seedling 1 are provided at both left and right ends of the feed roller 29.
b is formed. The height dimension t3 of the flange portion 29b is
It is set to be smaller than the thickness t1 of the belt seedling 1 and larger than the thickness t2 of the support sheet 6. As a result, it is possible to avoid the inconvenience that the flange portion 29b strongly hits the stem portion of the planted seedling 3 and damages the planted seedling 3, and moreover, securely holds both side portions of the support sheet 7 with a small deformation amount. It is possible to enhance the effect of preventing lateral slippage.

The pressing roller 30 is provided on the upper end of the seedling conveying frame 27 so as to be vertically movable via an arm body 37.
The belt seedling 1 is pressed against the feed roller 29 by the urging force of an ammunition machine 38 provided between the arm body 37 and the seedling transport frame 27. Arm body 37 of the present embodiment
Includes an arm member 37a rotatably connected to the upper end of the seedling transport frame 27, and a plate member 37b rotatably connected to the tip of the arm member 37a. The plate member 37b is provided with an auxiliary roller 39 in addition to the pressing roller 30, and when the auxiliary roller 39 contacts the posture maintaining roller 31, the plate member 37b is maintained in a predetermined posture.

The posture maintaining roller 31 is rotatably provided on the seedling conveying frame 27 via a support shaft 31a, and guides the belt seedling 1 on the side of the feeding roller 29 which is superior in conveying. As a result, the posture of the belt seedling 1 on the feed roller 29 is stabilized, and deviation of the feed pitch is prevented. Further, the posture maintaining roller 31 is arranged on the opposite side of the feed roller 29 with the belt seedling conveying path as a boundary. That is, the belt seedling 1 pulled out from the belt seedling holding portion 17 passes through the lower side of the posture maintaining roller 31 and the upper side of the feeding roller 29 to reach the seedling take-out port 15 a of the apron 15. Then, the posture maintaining roller 31 of the present embodiment guides the belt seedling 1 below the virtual straight line connecting the seedling feeding position of the belt seedling holding portion 17 and the seedling feeding position of the feed roller 29. The belt seedling conveying path may be curved downward between the holding unit 17 and the feed roller 29 to give an appropriate tension to the belt seedling 1.
It becomes possible to prevent the pitch deviation of the feed roller 29 by increasing the winding angle of the.

In the vicinity of the seedling take-out port 15a (engagement position of the planting claw) in the apron 15, a notch 40a leading to the seedling take-out port 15a and an inclined guide part 40b for guiding the planting piece 4 to the seedling take-out port 15a. There is provided a planting separation table 40 including. When the planting piece 4 (belt seedling 1) is sent to the planting separation table 40, one claw portion 19a of the planting claw 19 engages with the engaging holes 5b, 6a from above in synchronization with the timing. At the same time, the planting piece 4 is separated from the succeeding piece. At this time,
The planting piece 4 bends along the side surface of the planting claw 19 while being guided by the inclined guide 40b, and comes out downward from the seedling take-out port 15a. Further, when the planting claw 19 descends, the lower side of the planting piece 4 plunges into the soil and the fork 19b.
Is activated to plant the planting piece 4 in the field. still,
Reference numeral 41 denotes a seedling guide provided at a lateral position of the descending locus of the planting claw 19, and the seedling guide 41 is provided so as to hang downward from the lower end of the inclined guide 40b. Guide the planting piece 4 so that

The planting section 8 constructed as described above conveys the belt seedling 1 which holds a plurality of seedlings in a row in a predetermined direction, and separates it into the planting pieces 4 at the conveying end portion thereof to produce a field. In planting the seedlings, the belt seedling holding portion 17 that holds the belt seedling 1 so that the belt seedling 1 can be freely fed, and the feeding roller 29 that conveys the belt seedling 1 held by the belt seedling 1 toward the planting piece separating position. And a posture maintaining roller 3 for maintaining the transporting posture of the belt seedling 1 on the side on which the feeding roller 29 is good to transport.
1 and 1. That is, since the feeding posture of the belt seedlings 1 is maintained on the side on which the feeding roller 29 is good in feeding, it is possible to avoid the inconvenience that the feeding pitch of the feeding roller 29 is deviated and improve the planting accuracy.

Further, since the posture maintaining roller 31 is arranged on the opposite side of the feed roller 29 with the belt seedling conveying path as a boundary, it gives an appropriate tension to the belt seedling 1 and the belt seedling 1
Is not allowed to be stabilized, the wrapping angle of the belt seedling 1 with respect to the feed roller 29 can be increased to prevent pitch deviation of the feed roller 29, and the posture of the belt seedling 1 can be adjusted by using a roller member. By maintaining it, the structure can be simplified.

The belt seedling holding portion 17 is configured to hold the belt-shaped seedling 1 wound in a roll so that the belt-shaped seedling 1 can be paid out, and contacts the outer periphery of the belt-shaped seedling 1 wound in a roll. Since the belt seedling 1 is provided with the feeding resistance roller 25 for giving a predetermined feeding resistance, it is not possible to prevent the belt seedling 1 from being excessively fed out due to inertia. The conveyance posture can be stabilized.

[Brief description of drawings]

1A is a partial plan view of a belt seedling, and FIG. 1B is a sectional view.

FIG. 2 is a side view of a planting part.

FIG. 3 is a plan view of a main part of a planting part.

FIG. 4 is a side view of a main part of a planting part.

FIG. 5 is a sectional view of a belt seedling conveying section.

FIG. 6 is a front view of the same.

FIG. 7 is a plan view showing a planting piece separation position.

FIG. 8 is a front view of a main part showing a planting operation.

[Explanation of symbols]

1 belt seedling 4 Planted pieces 8 planting department 15 aprons 17 Belt seedling holder 18 Belt seedling carrier 19 planting nails 25 Feeding resistance roller 27 Seedling transport frame 28 Drive shaft 29 Feed roller 30 Presser roller 31 Posture maintaining roller

Claims (3)

[Claims] 1. A seedling planting device for transporting a belt seedling, which holds a plurality of seedlings in a row, in a predetermined direction, and separating the seedlings into planting pieces at the transporting end portion to plant in a field. The seedling planting device includes a belt seedling holding portion that holds the belt seedling so that the belt seedling can be freely fed, a feed roller that conveys the belt seedling held by the belt seedling toward a planting piece separating position, and the feed. A seedling planting device, comprising: a posture maintaining member that maintains a transporting posture of the belt seedlings on the side of good conveyance of the rollers. 2. The seedling planting device according to claim 1, wherein the posture maintaining member is a roller member arranged on the opposite side of the feed roller with a belt seedling conveying path as a boundary. 3. The belt seedling holding portion according to claim 1, wherein the belt seedling holding portion is configured to hold the belt seedling wound in a roll shape so as to be able to be fed out, and the outer periphery of the belt seedling wound in a roll shape. A seedling planting device, comprising: a feeding resistance member that comes into contact with a portion to give a predetermined feeding resistance to a belt seedling.