JPH11318147A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling transplanter capable of eliminating a problem that seedlings can accurately not be transplanted, because matted seedlings are drawn and sheared or pulled off to disorder the density of the matted seedlings or because the changes in the numbers of seedlings picked with a seedling-planting device or the interruption of a continuous planting operation are caused, when the bed portions of the mat seedlings are soft on the transfer of the mat seedlings by the use of the seedling transfer belt of the seedling transplanter. SOLUTION: This rice transplanter is provided with a seedling-planting device for separately picking seedlings from matted seedlings loaded on a seedling carriage 11 and subsequently separately planting the picked seedlings in a field and with seedling transfer belts 20 for transferring the matted seedlings to the side of the seedling-planting device. Therein, seedling-pressing rollers 42 disposed in states faced to the seedling transfer belts 20 are disposed to press the matted seedlings over the whole widths of the matted seedlings.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling transplanter for picking mat-shaped seedlings on a seedling mounting table one by one and planting them in a field.

[0002]

2. Description of the Related Art Conventionally, a seedling feeding device constituted by a transfer belt is provided below a mat seedling placed on a seedling mounting table, and the mat seedling is transferred to a seedling planting device by the seedling feeding device. In the seedling transplanter having a configuration in which the seedlings are transferred one by one and the seedlings are taken one by one from the end of the mat seedling and planted in a field, a seedling holding device is provided at a position opposed to the seedling feeder, that is, above the mat seedling, There is a type in which the mat seedling is pressed against the mat seedling by contacting the matting seedling with the seedling feeding device, so that the mat seedling can be reliably transferred by the seedling feeding device. As the seedling holding device, there is a structure in which a plurality of bars are provided in parallel with a seedling feeding direction of a seedling feeding device, and the plurality of bars are brought into contact with a mat seedling.

[0003]

However, since the seedling press of the prior art is composed of a plurality of rods extending in the seedling feeding direction of the seedling feeding device, it is orthogonal to the seedling feeding direction of the seedling feeding device. In this direction, only a part of the mat seedling is abutted, and the operation of the seedling feeder causes a difference in the transfer force of the mat seedling between the part where the bar material abuts and the part where it does not abut. Therefore, if the floor of the mat seedlings is soft, the mat seedlings are stretched or torn so as to be sheared, and the density of the mat seedlings fluctuates. There is a problem that accurate planting cannot be performed due to invitation or interruption of continuous planting.

[0004] In addition, when the seedling feeding device feeds seedlings, if the pressing force of a fixed seedling holding device such as the bar is too large,
There is a problem that the mat seedling is deformed or damaged due to sliding resistance with the seedling holding device. Also, the leaves of the mat seedlings may be tilted with respect to the seedling feed direction due to the pressing of the seedling holding device, and the seedlings planted in the field without being scraped off in an appropriate posture by the seedling planting device may be improperly positioned. Problem.

[0005]

The present invention takes the following technical means to solve the above-mentioned problems. That is, a seedling planting device 13 for taking one seedling from each end of the mat seedling placed on the seedling mounting table 11 and planting it in a field, and matting the seedlings on the seedling mounting table 11 to the seedling planting device 13. In the seedling transplanter provided with the seedling feeding device 20 for transferring to the side, the seedling holding device 42 provided opposite to the seedling feeding device 20 is used for mat seedlings in a direction orthogonal to the seedling feeding direction of the seedling feeding device 20. A seedling transplanter was provided so as to press the mat seedling over the entire width.

In the second invention, the seedling mounting table 1
1. A seedling planting device 13 for picking up seedlings one by one from an end of the mat seedling placed on the plant 1 and planting the seedlings in a field, and the seedling mounting table 11
In a seedling transplanting machine provided with a seedling feeding device 20 for transferring a mat seedling to the seedling planting device 13 above, a seedling holding roller 42 that rotates in a seedling feeding direction provided opposite to the seedling feeding device 20 is provided. A seedling transplanter is provided which presses a mat seedling over the entire width of the mat seedling in a direction perpendicular to the seedling feeding direction of the seedling feeding device 20.

In the third invention, the seedling mounting table 1
1. A seedling planting device 13 for picking up seedlings one by one from an end of the mat seedling placed on the plant 1 and planting the seedlings in a field, and the seedling mounting table 11
In a seedling transplanting machine provided with a seedling feeding device 20 for transferring a mat seedling to the seedling planting device 13 above, a seedling holding roller 42 that rotates in a seedling feeding direction provided opposite to the seedling feeding device 20 is provided. The seedling press roller 4 is provided so as to press the matte seedling over the entire width of the matt seedling in a direction perpendicular to the seedling feeding direction of the seedling feeding device 20.
2 irregularities 4 in the direction perpendicular to the seedling feeding direction
2a... Are provided.

[0008]

Therefore, in the seedling transplanter of the present invention, the mat seedlings are pressed toward the seedling feeding device by the seedling holding device. Since the apparatus presses the mat seedlings over the entire width of the mat seedling in a direction orthogonal to the seedling feeding direction of the seedling feeding device, the transfer force of the mat seedling by the seedling feeding device can be made uniform over the entire width of the mat seedlings, The operation of the seedling feeding device suppresses the floor portion of the mat seedlings from being stretched or torn so as to be sheared, suppressing the deformation or damage of the mat seedlings, and causing poor seedling feeding to the seedling planting device. Seedlings can be sent properly and planted with the correct number of seedlings to be harvested, enabling continuous planting.

Further, according to the second aspect of the present invention, since the seedling pressing device is constituted by the seedling pressing roller rotating in the seedling feeding direction, the seedling pressing roller rotates following the seedling feeding operation by the seedling feeding device. However, it is possible to prevent the mat seedling from being deformed or damaged due to sliding resistance with the seedling holding device when feeding the seedlings. Further, according to the third invention, since the unevenness is provided on the outer peripheral surface of the seedling holding roller in a direction orthogonal to the seedling feeding direction, the leaves of the mat seedling are guided by the unevenness at the time of feeding the seedling, and the seedling leaves are seeded. The seedlings are corrected in the feeding direction, and the seedlings can be scraped by a seedling planting device in a proper posture and planted in a field in a proper posture.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG.
As shown in FIG. 1, a riding type rice transplanter 3 including a traveling vehicle body 1 and a six-row planting section 2 will be described. The traveling vehicle body 1 is mounted with a pair of left and right front wheels 4, 4 and rear wheels 5, 5 and drives the front and rear wheels 4, 4, 5, 5 to travel. A cockpit 6 is provided substantially at the center, and a steering handle 7 is provided in front of the cockpit 6. The seedling mounting portion 2 is mounted on the rear portion of the traveling vehicle body 1 via a lifting link mechanism 8, and the seedling mounting portion 2 is provided so as to be able to move up and down by expansion and contraction of a hydraulic lifting cylinder 9. A planting / elevating lever 10 is provided on the right side of the cockpit 6 so that the planting / elevating lever 10 can be used to turn on and off the drive of the seedling planting unit 2 and perform an elevating operation. .

The seedling planting section 2 includes a seedling mounting table 11 on which mat seedlings are placed, a planting transmission section 12, and a seedling planting apparatus 13 of each row for scraping the mat seedlings one plant at a time and planting them in a field. Power is transmitted from the planting input case 14 on the running vehicle body side to the planting transmission section 12 via the planting transmission shaft 15 to operate. In the lower part of the seedling planting section 2, three floats 16, 16, 16 are arranged in parallel on the left and right, and these floats 16, 16, 16 slide on a field scene. It is. In addition, the said seedling planting apparatus 13 ...
The seedling separating needles 13a operate so as to draw a predetermined loop locus T to scrape off one seedling from the mat seedling, and the loop locus is driven. T
Are actuated at the bottom dead center to plant seedlings in the field.

When the seedling planting devices 13 are operated,
The seedling mounting table 11 is moved left and right along a seedling mounting table left / right moving guide plate 19 by a left / right moving rod 18 which moves left and right by the power from the planting transmission unit 12, and is moved to a seedling scraping opening 19 a provided on the guide plate 19. The seedlings are sent one by one in the horizontal direction, and mat seedlings are seeded from the seedling scraping openings 19a.
The seedling separation needles 13a of No. 3 scrape off one stock at a time.

The seedling mounting table 11 is provided with a seedling feeding belt 20 serving as a seedling feeding device for each strip. Two seedling feed belts 20 are provided on the left and right sides of one seedling mounting portion 11a of the seedling mounting table 11, and are provided so as to occupy most of the left and right widths of the seedling mounting portions 11a. The mat seedlings are transferred by contacting and driving most of the bottom surface of the floor of the mat seedlings in the seedling placing portions 11a. The seedling feed belts 20 of each strip are wound around a lower driving roller 21 and an upper driven roller 22. A description will be given of the drive configuration of the drive rollers 21. The right and left seedling feed drive cams 23 which rotate integrally with the output shafts 23a, 23a projecting left and right from inside the planting transmission case 12a of the planting transmission unit 12. , 23 are rotated to contact the cams 23, 23 so as to contact the right and left seedling feed transmission arms.
The motors 24 rotate by a predetermined angle. And the arm 2
The seedling feed transmission shaft 25 that rotates together with the seedlings 4 and 24 is driven.
Each of the seedling feed transmission shafts 25 includes two shafts that rotate integrally with the shaft 25.
A seedling feed driving arm 26, 26, 26 is provided for each row, and the seedling feed drive arm 2 is driven by driving the seedling feed transmission shaft 25.
6, 26, 26 are driven. Then, seedling feed relay arms 27, 27, 27, 27, 27, 27, 27, 27, 27a, 27a are rotatably attached to respective ends of the seedling feed drive arms 26, 26, 26 for each two rows. Notch portions 27b, 27b, 27b at the tip of 27 are provided with seedling feeding arms 2 for each two rows.
8, 28, 28, a cylindrical portion 28a at the tip of 28, 28a, 28a
Each has a configuration in which it fits. Accordingly, the drive of the seedling feeding driving arms 26, 26, 26 is transmitted to the seedling feeding arms 28, 28, 28. The seedling feeding arms 28, 28, 28 are provided with ratchet claws 29a... The ratchet feeding arms 28, 28, 28 are driven to drive the ratchet claws 29a. , 29b are driven only in a certain direction, and the ratchet wheels 29b, 29b, 29b and
The drive rollers 21, which rotate integrally via the seedling feed shafts 30, 30, 30 for each row, rotate only in a direction in which the seedlings on the seedling mounting table 11 are sent to the seedling planting device 13 side. The right and left seedling feed driving cams 23 are arranged so as to contact the right and left seedling feed transmitting arms 24 at the left and right ends of the left and right movements of the seedling mounting table 11, respectively. Therefore, every time the seedling mounting table 11 is located at the end of the left and right movement, the seedling feeding belt 20.
Transfer one share at a time.

Further, the seedling mounting portion 11 of each section of the seedling mounting table 11
A seedling detection switch 31 which is a limit switch is provided at an appropriate position in FIG.
The presence or absence of seedlings on the seedling mounting table 11 is detected by 1... To recognize the decrease in seedlings. By the way, this riding type rice transplanter 3 rolls a long seedling, about 30 cm wide and about 6 m long, into a roll shape.
The roll seedlings are loaded into the roll seedling supply section 32 for each row on the upper side of 1, and mat seedlings are fed from the roll seedlings r and the seedlings are planted in the field. FIG.
As shown in FIG. 6, the roll seedling r is formed by winding a long mat seedling around a roll seedling take-up pipe 33 composed of a cylinder having the same length as the left and right widths of the mat seedling to be wound. You.
When loading the roll seedling r into the roll seedling supply section 32, a roll seedling loading tool 34 is inserted into the roll seedling winding pipe 33, and the roll seedling loading tool 32 is inserted. The roll seedlings r can be loaded into the roll seedling supply section 32 via 34. The roll seedling loader 34 includes triangular plates 34a, 34a at both left and right ends and plates 3a at the left and right.
Three rods 34b, 34b, 34b connecting 4a, 34a
And stepped shafts 34c, 34c fixed to the left and right outer sides of the plates 34a, 34a, respectively.
Then, the roll seedling loader 34 is attached to the roll seedling winding pipe 33.
Are inserted, the three rods 34b, 34b, 34
b comes into contact with the inner surface of the roll seedling take-up pipe 33, and the roll seedling take-up pipe 33 is placed on the roll seedling loading device 34 in a direction perpendicular to the winding axis of the roll seedling r. The position is fixed.

The roll seedling supply units 32 are arranged on the seedling mounting table 1.
Fence part 11b that partitions the seedling placement part 11a of each section 1
The rotating shaft 35a is attached to the left and right base plates 35 fixed to.
… It is configured to be rotatable around,
A connecting frame 32b for connecting the left and right roll seedling rotating support plates 32a to the left and right roll seedling rotating supporting plates 32a which rotates around the rotating shaft 35a. And a roll seedling supply lever 32c fixed to the left roll seedling rotation support plate 32a. At the ends of the left and right roll seedling rotation supporting plates 32a, 32a, stepped shafts 3 at both left and right ends of the roll seedling loading device 34 are provided.
Notches 32d, 32d for fitting 4c, 34c
Is provided. At the roll seedling loading position A in which the roll seedling supply section 32 is rotated toward the cockpit 6 by the roll seedling supply lever 32c, the stepped shaft 34 is loaded to load the roll seedling r.
c, 34c are fitted into the notches 32d, 32d.
The roll seedling supply section 32 is rotated by the roll seedling supply lever 32c toward the seedling mounting table 11, and the roll seedling r is brought into contact with the seedling mounting table 11 by its own weight. It is configured to supply to the position B.

The outer peripheral surface of the roll seedling r at the roll seedling feeding position B is in contact with the upper part of the seedling feeding belts 20. Therefore, by the operation of the seedling feeding belts 20, the roll seedlings r are rotated to feed mat seedlings from the roll seedlings r onto the seedling mounting table 11, and the mat seedlings on the seedling mounting table 11 are transferred to the seedlings. It transfers to the planting device 13 side. Therefore, the seedling feed belts 20 act on the outer peripheral surface of the roll seedlings r, so that the remaining amount of the roll seedlings r, that is, the roll seedlings r.
A predetermined amount of the roll seedlings r can be fed out regardless of the outer diameter of the seedlings r, and the roll seedling r feeding and seedling planting apparatus 1
Since the feeding of the seedlings to the seedlings 3 is performed by the same seedling feeding belt 20, the feeding of the roll seedlings r and the feeding of the seedlings to the seedling planting apparatus 13 are synchronized, and the seedling feeding amount and the seedling feeding amount are substantially equal. Since the mat seedlings are the same, the mat seedlings on the seedling mounting table 11 are not loosened or pulled by the seedling feeding belt 20, so that deformation or damage of the mat seedlings can be prevented.

As shown in FIG. 7, the leaves h of the mat seedlings are placed on the lower side of the seedling mounting table 11 so as not to interfere with the operation of the seedling mounting apparatuses 13. There are provided resistance plates 36 for defeating. The resistance plate 36
It is provided for each article. Fence part 1 of seedling mounting table 11
A hexagonal shaft 38 provided to prevent rotation of the resistance plate support portions 37 provided in 1b is provided in the left and right direction for each strip, and an outer fitting portion 39 is fitted to the hexagonal shaft 38 so as not to rotate. The resistance plate 36 is fixedly provided on mounting plates 40 integral with the mounting plates 40 by mounting bolts 41,41. The lower end of the resistor plate 36 has a fine wavy shape 36a.

With this arrangement, when the seedling planting device 13 scrapes the seedlings, the leaf h of the mat seedling is prevented from interfering with the seedling planting device 13 by the resistance plate 36. In this way, the leaves h of the mat seedlings are prevented from being damaged, and the seedling separation needles 13a of the seedling planting device 13 can accurately act on the floor g of the mat seedlings to reliably scrape the seedlings. Further, the lower end of the resistance plate 36 is formed into a fine wave shape 3.
6a, when the seedlings are scraped by the seedling planting device 13, the leaves h of the matted seedlings are guided by the wavy shape 36a,
The seedlings to be scraped are less likely to shift in the left-right direction, and the seedlings can be planted in the field by the seedling planting device 13 in an appropriate posture. If the floor g of the mat seedling is soft, the mat seedling may move in the left-right direction due to the sliding resistance between the seedling mounting base left / right moving guide plate 19 and the bottom surface of the mat seedling floor g accompanying the left-right movement of the seedling mounting base 11. Although the resistance plate 36 tends to shift, the resistance plate 36
When the seedling mounting table 11 moves left and right, the leaves h of the mat seedlings move left and right in a state of being engaged with the corrugations 36a of the resistance plate 36, thereby suppressing the mat seedlings from shrinking and shifting in the left and right directions. be able to.

At the front side of the resistance plates 36, there are provided rotatable seedling pressing rollers 42, which serve as seedling holding devices for holding mat seedlings from above. The seedling holder
LA is provided for each strip so as to have the same length as the left and right widths of the seedling mounting portions 11a of the seedling mounting table 11.
Are provided at positions facing the lower part of the seedling feed belts 20 so that the mat seedlings are sandwiched between the seedling feed belts 20.
The outer circumferential surface of the seedling holding roller 42 is configured such that grooves 42a... Along the rotation direction of the roller 42 are arranged innumerably in the left-right direction. Incidentally, the seedling holding roller 42 is formed of a cylindrical body. At both ends of the inner diameter portion of the roller 42, the roller
The bushes 43, 43 are fitted so as not to rotate with respect to the ra. And left and right roller support arms 44, 44 rotatable about the hexagonal shaft 38 having cutouts 44a, 44a for engaging with the hexagonal shafts 38 provided on the resistance plate support portions 37. The left and right roller support arms 4
Roller rotary shafts 45 are inserted through holes 44b, 44b provided at the respective ends of the bushings 43, 43 and holes 43a, 43a at the center of the bushings 43, 43. Seedling holding roller 4 by supporting arms 44, 44
2 is supported. Therefore, seedling holder
The seedling holding roller 42 presses the mat seedling toward the seedling feeding belt 20 while being supported by the roller supporting arms 44, 44 by the weight of the roller 42. A connecting pipe 4 for connecting the left and right roller support arms 44,44.
6 is provided so as to be curved upward, so that an operator can grasp the connecting pipe 46 and remove the seedling holding roller 42 from the seedling mounting table 11.

As described above, this riding type rice transplanter 3 comprises a seedling planting device 13 for picking up seedlings one by one from the lower end of the mat seedling placed on the seedling mounting table 11 and planting the seedlings in a field. The mat seedling is placed on the mounting table 11 by the seedling planting device 13.
And a seedling feeder constituted by a seedling feed belt 20 for transferring to the side, and a mat seedling is pressed by a seedling holding roller 42 serving as a seedling holding device provided opposite to the seedling feed belt 20. In addition, the seedling holding devices 42 are provided so as to press the mat seedlings over the entire width of the mat seedlings in a direction perpendicular to the seedling feeding direction of the seedling feeding belts 20, that is, in the left-right direction.

Accordingly, the riding type rice transplanter 3 transfers the mat seedlings placed on the seedling mounting table 11 to the seedling planting device 13 side by the seedling feeding belt 20 and the seedling planting device 13. One seedling is taken and planted in the field. Since the mat seedlings are pressed toward the seedling feeding belt 20 by the seedling holding rollers 42, the mat seedlings can be reliably transferred by the seedling feeding belts 20, and the seedling holding rollers 42 are fed by the seedling feeding rollers 20. Since the mat seedlings are pressed over the entire width of the mat seedling in the direction perpendicular to the seedling feeding direction of the belts 20, that is, in the left-right direction, the transfer force of the mat seedlings by the seedling feeding belts 20 over the entire width of the mat seedlings is uniform. At the time of transplanting the roll seedlings r on which the floor portion is thinned and softened so as to reduce the outer diameter of the roll seedlings r, the floor portion g of the mat seedlings is moved by the operation of the seedling feeding belt 20. It prevents the seedlings from being stretched or torn so as to be sheared, suppresses deformation or damage of mat seedlings, and causes poor seedling feeding to the seedling planting apparatus 13. And without proper send a seedling, make planting by accurately seedlings up the number, it is possible with continuous planting.

When the planting test is carried out with the seedling holding rollers 42... Compared with the case without the seedling holding rollers 42, the number of seedlings per planted seedling is found. It was concluded that the standard deviation indicating the variation in the number of seedlings was reduced from 3.1 to 2.6, and the number of seedlings was stabilized. In addition, the number of missing plants has been reduced. Further, since the seedling holding device is constituted by the seedling holding rollers 42, the seedling feeding belts 20 are formed.
The seedling holding rollers 42 are rotated following the seedling feeding operation of the seedlings, thereby preventing deformation or damage of the mat seedlings due to sliding resistance with the seedling holding device during seedling feeding.

Further, the seedling holding rollers 42 are operated by their own weight by the rollers 42.
The spacing between the seedling feed belts 20 and the seedling feed belts 20 is freely changed by the rotation of the seedling holding rollers 42.
The deformation or damage of the mat seedling caused by unnecessarily increasing the transfer force of the mat seedling by the pressing can be suppressed. In addition, as shown in FIG.
May be provided so as to abut against the outer peripheral surface of the seedling holding roller 42 to support the seedling holding roller 42 so that the interval between the seedling pressing roller 42 and the seedling feeding belt 20 can be freely changed. With this configuration,
The seedling holding rollers 42 can be easily attached and detached when the mat seedlings are loaded into the seedling mounting table 11 at the start of the planting operation. Further, as shown in FIG. 10, the seedling holding rollers 42 may be urged toward the seedling feed belt 20 using the tension springs 52. With this configuration, the interval between the seedling holding rollers 42 and the seedling feeding belt 20 can be freely changed to prevent the transfer force of the mat seedlings from being unnecessarily increased, and the seedling holding rollers 42 by the tension springs 52 can be prevented. , The weight of the seedling pressing rollers 42 can be reduced.

Since the grooves 42a along the rotation direction of the rollers 42 are arranged innumerably in the left and right direction on the outer peripheral surface of the seedling pressing roller 42, the matte seedlings h are placed in the grooves 42a when feeding the seedlings. Is guided in the direction along the seedling feeding direction so that the leaves h of the seedlings do not incline left and right. When the seedlings are scraped by the seedling planting device 13, the seedlings to be scraped hardly shift in the left-right direction. Thereby, the seedlings can be scraped in a proper posture and planted in a field in a proper posture. When the floor g of the mat seedling is soft, the guide plate 19 for moving the seedling mounting table left and right accompanying the right and left movement of the seedling mounting table 11 and the floor g of the mat seedling.
The mat seedlings tend to shift in the left-right direction due to the sliding resistance with the bottom surface of the seedling. However, the seedling holding roller 42 having the grooves 42a... When the 11 moves left and right, the leaves of the mat seedlings h
Move left and right in a state of being engaged with the grooves 42a of the seedling holding roller 42, and it is possible to prevent the mat seedling from shrinking in the left and right direction and being displaced.

The arrangement shown in FIG.
Are formed in a hexagonal shape in side view. By forming the seedling holding rollers 53 in a polygonal shape in this manner, the seedling holding action surface can be made wider than that of the circular seedling holding rollers 42 in side view. It is possible to increase the overall pressing force while setting the pressure of the pressing of the mats 53 to such a degree that the mat seedlings are not compressed and deformed or damaged. The rollers 53 rotate to prevent the mat seedlings from deforming or being damaged due to sliding resistance with the seedling holding device when feeding the seedlings, and to prevent the mat seedlings from shrinking and shifting in the left-right direction due to the lateral movement of the seedling mounting table 11. be able to.

The seedling holding roller 54 shown in FIG.
The left and right ends 54 that press the left and right ends of the mat seedling
The a and 54a have slightly larger outer diameters. With this configuration, the pressure of pressing the left and right ends of the mat seedling becomes extremely large, so that the mat seedling shrinks in the left and right directions due to the left and right movement of the seedling mounting table 11 can be rationally suppressed.

By the way, the raising of the roll seedling is shown in FIG.
4, nursery gutter 61 having a slight inclination as shown in FIG.
Are performed by the seedling raising device 62 provided with. The seedling raising device 62 has a configuration in which four seedling raising troughs 61 are provided in parallel so as to raise four long mat seedlings. A mat member 63 such as urethane or nonwoven fabric is laid on the nursery gutter 61, seeds s are sowed in an appropriate amount and uniformly on the mat member 63, and soil is covered with fertilizer mixed soil 64.
Then, the water 66 stored in the tank 65 is sent by a pump 67 to a quick valve 69 on the upper side of the seedling gutter 61 via a water supply pipe 68. Unnecessary water discharged from the pump 67 is returned to the tank 65 via the flow control valve 70 and the return pipe 71. Before the seeding on the mat member 63, the weirs 72, 72 maintain a predetermined liquid level by the weirs 72, 72 so that water mixed with oxygen and dissolved by the quick valve 69 is supplied to the seedlings 61. 61 flows to the lower side. A drain hole 73 is provided on the bottom surface on the lower side of the seedling gutters 61. Water is returned from the drain hole 73 to the tank 65 via a drain pipe 74. Then, water is stored in the nursery gutters 61.
When the above-mentioned running water is stopped, the seeds are seeded on the mat member 63, covered with soil, and germinated, water is supplied to the seedling gutters 61 at appropriate times to grow seedlings on the mat member 63. The root n of the seedling is entangled with the mat member 63 and extends. Until the seeds germinate after sowing and covering, the room temperature is raised to create an environment where germination is easy.

In the seedling raising of the roll seedling, since the soil covering 64 is performed on the seeded mat member 63, the seed s is prevented from rising from the mat member 63 due to the extension of the root n. It is extended so that it is entangled with the mat, so that a sturdy mat seedling on the floor can be obtained. In addition, compared to the conventional method of raising seedling by mixing fertilizer into water and supplying fertilizer, soil covering 6
4 so that fertilizer is mixed and supplied.
The fertilizer effect can be accelerated, and the supply of fertilizer throughout the mat member 63 can be made uniform, so that the fertilizer effect of the entire mat seedling can be made uniform. In addition, since water does not flow through the seedling gutter 61 until the seeds germinate from the sowing, the flow of water is stopped until some roots n extend to the mat member 63, so that the flow of the seeds s can be prevented. In addition, since water does not flow into the seedling raising gutter 61 from the time of sowing to the time of germination, the temperature of the mat member 63 and the like at the time of germination can be prevented from lowering, and germination can be performed well.

The above embodiment relates to a six-row seedling transplanter, but the present invention is not limited to six-row planting. In this embodiment, a riding type rice transplanter has been described. However, the present invention can be applied to a walking type rice transplanter or the like.

[Brief description of the drawings]

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

FIG. 2 is a side view of a seedling planting section.

FIG. 3 is a plan view of a seedling planting section.

FIG. 4 is a side view showing a transmission mechanism to a seedling feed belt.

FIG. 5 is a side view showing a roll seedling winding pipe and a roll seedling loading device.

FIG. 6 is a cross-sectional view showing a roll seedling winding pipe and a roll seedling loading device.

FIG. 7 is a side view showing a seedling holding roller and a resistance plate.

FIG. 8 is a view showing a resistance plate;

FIG. 9 is a partial sectional view showing a seedling holding roller.

FIG. 10 is a side view showing a seedling planting section having another configuration.

FIG. 11 is a side view showing a seedling holding roller having another configuration.

FIG. 12 is a side view showing a seedling holding roller having another configuration.

FIG. 13 is a view showing a seedling holding roller having another configuration.

FIG. 14 is a plan view showing a seedling raising device.

FIG. 15 is a side view showing a seedling raising device;

FIG. 16 is a diagram showing a seedling raising state.

[Explanation of symbols]

3: Riding rice transplanter (seedling transplanter), 11: seedling mounting table, 1
3 ... seedling planting device, 20 ... seedling feeding belt (seedling feeding device),
42: seedling holding roller (seedling holding device), 42a: groove

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hideaki Fukuyama 1st Hachikura, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd. Within the department (72) Inventor Manabu Namoto 1 Hachikura, Toze-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd.

Claims (3)

[Claims] 1. A seedling planting device (13) for picking up seedlings one by one from an end of a mat seedling placed on a seedling placing stand (11) and planting the seedlings in a field, and matting seedlings on the seedling placing stand (11). In the seedling transplanter provided with the seedling feeding device 20 for transferring to the attaching device 13 side, the seedling holding device 42 provided opposite to the seedling feeding device 20 is moved in a direction orthogonal to the seedling feeding direction of the seedling feeding device 20. A seedling transplanter provided so as to press the mat seedling over the entire width of the mat seedling. 2. A seedling planting device 13 for picking up seedlings one by one from an end of a mat seedling placed on a seedling placing stand 11 and planting the seedlings in a field, and matting seedlings on the seedling placing stand 11 In the seedling transplanting machine provided with the seedling feeding device 20 for transferring to the attachment device 13 side, the seedling holding roller 42 rotating in the seedling feeding direction provided opposite to the seedling feeding device 20 is fed by the seedling feeding device 20. A seedling transplanter provided so as to press the mat seedling over the entire width of the mat seedling in a direction perpendicular to the direction. 3. A seedling planting device 13 for picking up seedlings one by one from an end portion of the mat seedling placed on the seedling placing stand 11 and planting the seedlings in a field. In the seedling transplanting machine provided with the seedling feeding device 20 for transferring to the attachment device 13 side, the seedling holding roller 42 rotating in the seedling feeding direction provided opposite to the seedling feeding device 20 is fed by the seedling feeding device 20. A seedling that is provided so as to press the mat seedling over the entire width of the mat seedling in a direction perpendicular to the direction, and that irregularities 42a are provided on the outer peripheral surface of the seedling holding roller 42 in a direction perpendicular to the seedling feeding direction. Transplant machine.