JP3481045B2 - Seedling transplanter - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transplanting nail for planting seedlings held by a seedling holding body and standing by in a standby position in the ground together with the seedling holding body, and a seedling holding body by the transplanting nail from a standby position. TECHNICAL FIELD The present invention relates to a seedling transplanting device including a seedling guide that guides movement, and particularly to a seedling transplanting device that is preferably used for transplanting seedlings such as paddy rice.

[0002]

2. Description of the Related Art Conventionally, such an apparatus is disclosed in
JP-A-2-134524 and JP-A-6-197609.
It is already known from Japanese Patent Publication No.

[0003]

[Problems to be Solved by the Invention] By the way
The seedling guide disclosed in Japanese Patent Publication No. 134524 is formed of an elastic plate so as to guide both sides of the seedling holder, and the seedling guide disclosed in Japanese Patent Application Laid-Open No. 6-197609 has both sides of the seedling holder. A pair of left and right elastic horizontal guide plates and a middle guide plate disposed between the side ends of the two horizontal guide plates are formed into a substantially U-shaped cross section. Also, since the contact area with the seedling holder is relatively large, the frictional resistance is relatively large, the power for driving the transplant nail is relatively large, and it is easy to contact the seedlings held by the seedling holder. This may damage the seedlings, and it is not cheap.

The present invention has been made in view of the above circumstances, and provides a seedling transplanting device provided with a seedling guide capable of reliably guiding the movement of seedlings by the transplanted nails while solving the above problems. The purpose is to do.

[0005]

In order to achieve the above-mentioned object, the invention according to claim 1 is a transplant for planting seedlings held by a seedling holder and waiting at a standby position in the ground together with the seedling holder. In a seedling transplanting device comprising a nail and a seedling guide for guiding the movement of the seedling holder by the transplanted nail from the standby position, the seedling guide is at a position spaced apart from the movement trajectory of the tip of the transplanted nail. It is characterized in that it is provided with a plurality of linear guide portions extending along the movement locus, and an interval between the guide portions is set to be equal to or less than the width of the seedling holding body.

The invention according to claim 2 is the above-mentioned claim 1.
In addition to the configuration of the invention described above, the seedling guide is provided with a linear receiving portion that is provided continuously to the upper end of each of the guide portions in close proximity to the seedling holding body at the standby position. .

According to a third aspect of the present invention, in addition to the configuration of the first or second aspect of the invention, the lower ends of the respective guide portions are arranged at positions spaced apart upward from the ground surface, and the guides are provided. It is characterized in that linear escape portions extending in the opposite side to the movement path of the transplanted nail are connected to the lower ends of the portions, respectively.

Further, in addition to the constitution of the invention described in any one of claims 1 to 3, the invention as set forth in claim 4 is such that the transplanted nail has a nail hooking hole provided in a seedling holder made of an elastic material. It is characterized in that a needle to be fitted is provided, and grooves are provided at a plurality of positions on the outer circumference of the needle at intervals in the axial direction.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below based on an embodiment of the present invention shown in the accompanying drawings.

1 to 16 show an embodiment in which the present invention is applied to a riding rice transplanter. FIG. 1 is a side view of the riding rice transplanter, and FIG. 2 is a view taken in the direction of arrow 2 in FIG. 3 is a side view of the seedling sheet, FIG. 4 is an enlarged sectional view taken along line 4-4 of FIG. 3, FIG. 5 is an enlarged sectional view taken along line 5-5 of FIG. 3, and FIG. 6 is an enlarged sectional view taken along line 6-6 of FIG. FIG. 7 is a perspective view of the seedling sheet wound in a roll shape, FIG. 8 is an enlarged side view taken along the arrow 8 of FIG. 2, and FIG. 9 is 9 of FIG.
The arrow enlarged view, FIG. 10 is the 10-10 line enlarged sectional view of FIG.
FIG. 11 is a view showing an operation conversion mechanism in the gear box, FIG.
2 is an enlarged sectional view taken along line 12-12 of FIG. 10, FIG. 13 is a lateral sectional view of driving and driven sprockets before and after winding the seedling sheet, FIG. 14 is an enlarged sectional view taken along line 14-14 of FIG. 9, and FIG. FIG. 16 is an enlarged view of a main part of FIG.

First, in FIG. 1, an engine (not shown) and engine accessories (not shown) are mounted on a front portion of a vehicle body frame 3 of a riding rice transplanter 1 which is a riding work machine. A bonnet 7 that covers the engine and engine accessories is provided on the vehicle body frame 3. Also the rear of the body frame 3 and the transmission T _R and the rear axle frame 12 is provided, on both sides of the rear axle frame 12, a pair of rear wheels W _R is arranged to be driven to rotate by power transmission from the transmission T _R And the vehicle body frame 3 in front of both rear wheels W _R
A pair of front wheels W _F are suspended in the. Further body frame 3
A seat 14 for seating an occupant who operates a steering handle 15 and the like is provided in the rear portion.

Referring also to FIG. 2, a support frame 17 is movably connected to the rear portion of the vehicle body frame 3 of the riding rice transplanter 1 via a link mechanism 16, and the support frame 17 is automatically connected to the support frame 17. Alternatively, floats 18 ... Are provided that can be manually adjusted up and down. Further to the frame body 32 attached to the support frame 17, first to sixth seedling transplantation apparatus 20 ₁ as possible to carry out the rice planting of Rokujo
20 ₆ are arranged side by side in the width direction of the riding rice transplanter 1.

By the way, in carrying out seedling transplantation by each of the seedling transplanting devices 20 _{1 to} 20 ₆ , a seedling sheet 21 as a seedling transplanting zone as shown in FIGS. 3 to 7 is used. Is a film 22 as a support band extending in a strip shape with the width direction being the vertical direction, and a porous sheet 23 having continuous pores.
Are bonded to each other so that they can be separated from the film 22.

The film 22 is made of polyethylene, for example.
It is formed of a thermoplastic resin such as polypropylene, polyvinyl chloride, acrylic and polyurethane, or a thermosetting resin such as polyester or polyethylene terephthalate, and its thickness is such that it does not hinder seedling raising and transplanting work, for example, 0. .05 to 0.15 mm, preferably 0.12 mm. In addition, the porous sheet 23
Is formed of soft (including semi-rigid) polyurethane foam, foam rubber, non-woven fabric, etc., and its thickness is set to such a degree that the entire seedling can be stored in the porous sheet 23, for example, 3 to 10 mm. . However, in FIGS. 3 to 5, in order to clarify the configuration of the seedling sheet 21, the film 22 is drawn with its thickness exaggerated.

The width of the porous sheet 23 is set to be substantially the same as the width of the film 22, but the porous sheet 23 is adhered to the film 22 so that the lower end portion thereof projects from the lower end of the film 22. In the upper part of the porous sheet 23, a storage recess 24 for storing seedlings such as paddy rice is provided.
, Are provided at equal intervals in the longitudinal direction of the film 22 so that one surface of the porous sheet 23 becomes a closed end. Each of the storage recesses 24 is formed in a shape that regulates the posture of the seed rice stored in the storage recess 24 to be substantially vertical or substantially horizontal. In this embodiment, the vertical length of the seed pad is the vertical length. It is formed in a vertically elongated elliptical shape having a diameter substantially equal to or larger than the diameter. Moreover, the storage recesses 24 ... Are arranged close to the upper end of the porous sheet 23 as in this embodiment, or are opened at the upper end of the porous sheet 23. The opening may be larger than the seed pad width, and is changed according to the growing condition of the seed pad to improve the germination of the seed pad.

The porous sheet 23 includes the porous sheet 2
The slits 26 that enable the sheet 3 to be separated into a plurality of sheet pieces 25 serving as a seedling holder are provided in the storage recesses 24.
The porous sheet 23 is provided at positions at substantially equal intervals in the longitudinal direction of the porous sheet 23 so as to be located in the center portion therebetween. These slits 26 may be any slits that can separate the porous sheet 23 into a plurality of sheet pieces 25, and are provided over the entire width of the porous sheet 23 in the vertical direction as in this embodiment. Well, also porous sheet 2
It may be partially provided along the width direction of No. 3.

Further, on the upper and lower parts of the film 22,
Feed holes 27 ..., 27 ... serving as feed locking portions for feeding the film 22 in the longitudinal direction are provided in a line at a plurality of locations at equal intervals along the longitudinal direction of the film 22. Cages and their feed holes 27 ..., 27 ...
Are arranged substantially corresponding to the slits 26 ... In the lower part of the porous sheet 23, holes 28 ... Corresponding to the feed holes 27 provided in the lower part of the film 22 are provided.

A circular claw hook hole 29 for engaging a graft claw 101 (see FIGS. 8 and 15) at the time of transplantation at the lower portion of the porous sheet 23 at a position substantially corresponding to each storage recess 24.
Are provided in the porous sheet 23 such that their lower portions are located below the lower end of the film 22. Moreover, the lower end of the film 22 is provided with semicircular cutouts 30 ... Corresponding to the upper portions of the nail hooking holes 29.

The seedling sheet 21 as described above can be used for raising seedlings not only at the time of transplanting seedlings by each of the seedling transplanting devices 20 _{1 to} 20 ₆ described above. Uses hydroponics. For example, when raising seedlings of paddy rice, seed rice after seeding is stored in each storage recess 24 of the seedling sheet 21, and treatment such as soaking and soaking is performed. At that time, as shown in FIG. 7, the porous sheet 23 is used. That is, each sheet piece 25, 2
The seedling sheet 21 is wound in a roll shape so that 5 are arranged on the outer peripheral side, and the seedling sheet 21 in the roll shape is soaked in water for seeding treatment. By performing the processing, each storage recess 2
The seedlings grown from seed paddy stored in 4 ... can be held in each sheet piece 25 of the porous sheet 23 in the seedling sheet 21.

By the way, basically, the _{first to} sixth seedling transplanting devices 20 _{1 to} 20 ₆ for transplanting seedlings using the seedling sheet 21 in which each seed piece 25 ... are those having the same configuration, hereinafter, described in detail the configuration of the first seedling transplantation apparatus 20 _1, second to sixth
Detailed description of the structures of the seedling transplanting devices 20 _{2 to} 20 ₆ will be omitted.

In FIG. 8 and FIG. 9, the first seedling transplanting device 20 ₁ has a transplantation table 33 for holding the seedlings 21 in a roll state while holding the seedlings on each sheet piece 25 ...
3. Feeding means 34 for intermittently feeding the seedling sheet 21 from above
Then, when the feeding operation by the feeding means 34 is temporarily stopped, the sheet piece 25 is peeled off from the film 22 of the seedling sheet 21 and planted in the ground, and the film 22 after the sheet piece 25 is peeled off is wound up. And a taking means 36.

The transplantation table 33 is mounted on the frame 32 in a forward and upward posture.
The rotary table 37 (see FIG. 8) on which the seedling sheet 21 in a roll state is placed and which is freely rotated is disposed on the transplantation table 33.

Referring also to FIG. 10, the feeding means 34
Is the feed hole 27 of the film 22 in the seedling sheet 21.
, 27 ... respectively engaged with the drive sprocket 39 having pins 38 ..., 38 ... planted on the outer periphery thereof, and the pin 4 engaged with the feed holes 27.
A driven sprocket 41 having 0, 40 ...
And the seedling sheet 21 from the transplantation table 33 is arranged on the outer peripheral side of the porous sheet 23, that is, each sheet piece 25. A driven sprocket 41 to be wound around and a driving sprocket 39 whose rotational direction is the same as that of the driven sprocket 41 are arranged in parallel with the spacing from the transplantation table 33 being substantially the same.

The drive sprocket 39 is coaxially fixed to the drive shaft 42. The drive shaft 42 extends downward from a gear box 43 arranged above the drive sprocket 39, and the gear box 43 is It is sandwiched between the upper and lower support plates 44 and 45 fixed to the frame body 32.

In the gear box 43, in order to convert the continuous rotary power of the transmission shaft 46 into the intermittent rotary power of the drive shaft 42, as shown in FIG. 11, an operation conversion mechanism 69 such as a roller gear cam mechanism. The operation converting mechanism 69 causes the drive shaft 42 to be intermittently operated so that the drive shaft 42 repeats stop → angular displacement → stop → angular displacement in response to the continuous rotation operation of the transmission shaft 46.

The transmission shaft 46 extends along the arranging direction of the _{first to} sixth seedling transplanting devices 20 _{1 to} 20 ₆ , and as clearly shown in FIG. 2, the first to sixth seedling transplanting devices 20.
20 ₁ to 20 ₆ substantially central portion or the third and fourth seedling transplantation apparatus 20 ₃ along the parallel direction of, 20 in the transmission shaft 46 at a position corresponding to between _4, transmission T _R of riding rice transplanter 1
From the rotary drive shaft 47 to which the power from is transmitted, the rotary power is applied so as to be distributed right and left. That is, the driven pulley 48 fixed to the transmission shaft 46 and the rotary drive shaft 4
7, the drive pulley 49 fixedly installed and the tension pulley 5
An endless timing belt 51 is wound around 0.

Referring also to FIG. 12, the driven shaft 52 is coaxially supported by a driven shaft 52 having a rotation axis parallel to the drive shaft 42, and the driven shaft 52 is supported by the upper and lower support plates 44. , 45 is rotatably supported by a shaft holder 53 held between the driven shaft 5 and the driven shaft 5 below the lower support plate 45.
The driven sprocket 41 is mounted on the No. 2.

A synchronous interlocking mechanism 54 is provided between the drive shaft 42 and the driven shaft 52. The synchronous interlocking mechanism 54 is a drive pulley 55 fixed to the drive shaft 42 between the drive sprocket 39 and the support plate 45. A driven pulley 56 fixed to the driven shaft 52 between the driven sprocket 41 and the support plate 45, a drive pulley 55 and a driven pulley 5
6 is composed of an endless timing belt 57 wound around 6 and the tension of the timing belt 57 is
Is adjusted, that is, by adjusting the position of the shaft holder 53 sandwiched between the support plates 44 and 45. By this synchronous interlocking mechanism 54, the driven shaft 52 is also intermittently operated in synchronization with the rotational operation of the drive shaft 42 which is intermittently driven.

By the way, the driven sprocket 41 includes a cylindrical body 58 coaxially surrounding the driven shaft 52, and an upper ring-shaped body 59 which penetrates the driven shaft 52 relatively rotatably and contacts the upper end of the cylindrical body 58. The driven shaft 52 is rotatably pierced through and the lower ring-shaped body 60 that abuts against the lower end of the cylindrical body 58 is connected by a plurality of connecting bolts 61. It is provided on the outer circumference of the cylindrical body 58. Then, the pins 40 ..., 40 ...
It is fixed to the outer periphery of the cylindrical body 58 by adhesion, bolting, integration, or the like. Moreover, the driven shaft 52 and the upper ring-shaped body 59
An oil-free bush 62 is interposed between the driven shaft 52 and
An oil-free bush 63 is interposed between the lower ring-shaped body 60 and the lower ring-shaped body 60.

Cylindrical body 58 of driven sprocket 41
An annular spring chamber 67 is provided between the inner surface of the shaft and the outer surface of the driven shaft 52.
In the spring chamber 67, a torsion spring 64 provided between the driven shaft 52 and the driven sprocket 41 is housed. The torsion spring 64 is housed in the spring chamber 67 so as to surround the driven shaft 52, one end of the torsion spring 64 is engaged with the locking pin 65 mounted on the driven shaft 52, and the other end of the torsion spring 64 is included. Is engaged with a locking recess 66 provided on the inner surface of the lower end of the cylindrical body 58.

Such a torsion spring 64 is shown in FIG. 13 in a natural state where no external force is applied to the driven sprocket 41.
In the state shown in (a), the spring force of the torsion spring 64 is not generated between the driven sprocket 41 and the driven shaft 52 in this state. Thus, when the seedling sheet 21 is wound around the driven sprocket 41 and the drive sprocket 39, as shown in FIG.
As shown in FIG. 3 (b), two driven sprockets 41 (for example, 30 pins, for example, 30) are provided along the rotation direction 68 of the driven shaft 52 by the input from the synchronous interlocking mechanism 54.
Angle), and the seedling sheet 21 is wound around both sprockets 39 and 41 in that state. Then, the rotation direction 68 of the driven shaft 52 by the synchronous interlocking mechanism 54.
The torsion spring 64 exerts a spring force in a direction for urging the driven sprocket 41 in the opposite direction to the driven sprocket 41.
And, the appropriate tension is applied to the seedling sheet 21 between the drive sprockets 39.

By the way, the power of the transmission shaft 46 is directly input to the first to third seedling transplanting devices 2 arranged in parallel.
Of 0 _{1 to} 20 ₃ , the feeding means 34 of the first seedling transplanting device 20 ₁ on one end side in the parallel direction and the fourth to sixth
Among the seedling transplanting devices 20 _{4 to} 20 ₆ , the feeding means 34 of the fourth seedling transplanting device 20 located on one end side in the parallel direction thereof, and located on one end side of the feeding means 34, 34 arranged side by side in the parallel direction. Between the driven shaft 52 of the feeding means 34 and the drive shaft 42 of the feeding means 34 on the other end side in the parallel direction.
0 ... are provided respectively. That is, between the first and second seedling transplanting devices 20 ₁ and 20 _2, between the second and third seedling transplanting devices 20 ₂ and 20 _{3, and} between the fourth and fifth seedling transplanting devices 20 ₄ ,
20 ₅ , and the fifth and sixth seedling transplantation devices 20 ₅ ,
A power transmission mechanism 70 ... Is provided between 20 ₆ respectively.

First and second seedling transplanting devices 20 ₁ , 20 ₂
The power transmission mechanism 70 between the driving pulley 71 fixed to an upper end portion of the driven shaft 52 in the first seedling transplantation apparatus 20 _1,
An endless timing belt 74 is wound around a driven pulley 72 (see FIG. 2) fixed to the upper end of the drive shaft 42 of the second seedling transplanting device 20 ₂ and a tension pulley 73. The pulley 73 is rotatably supported at the tip of a rotating arm 75 whose base end is rotatably supported by a supporting shaft 76 fixed to the supporting plate 44 on the side of the second seedling transplanting device 20 _2. A spring 78 is contracted between the arm 77 and the frame 32 that are connected to the base end of the frame 78. The spring force of the spring 78 urges the rotating arm 75 to rotate in the direction of pressing the tension pulley 73 against the inner circumference of the timing belt 74.

Second and third seedling transplanting devices 20 ₂ , 20 ₃
Between the fourth and fifth seedling transplanting devices 20 ₄ and 20 _{5 and} between the fifth and sixth seedling transplanting devices 20 ₅ and 20 ₆ , respectively. Power transmission mechanism 70 between the seedling transplanting devices 20 ₁ and 20 ₂
The seedling sheet 21 can be intermittently fed in each of the seedling transplanting devices 20 _{1 to} 20 ₆ . However, the second, third, fifth and sixth seedling transplanting devices 20 ₂ , 20 ₃ , 20 ₅ and 20 ₆ do not require the gear box 43, and these seedling transplanting devices 2
Drive shaft 42 in 0 ₂ , 20 ₃ , 20 ₅ , 20 ₆ ...
Are rotatably supported by shaft holders similar to the shaft holder 53 that rotatably supports the driven shaft 52.

By the way, a transmission shaft 46 extending along the arrangement direction of the seedling transplanting devices 20 _{1 to} 20 ₆ is arranged at a position corresponding to the vertical middle portion of the gear box 43 sandwiched between the upper and lower support plates 44 and 45. It is necessary to avoid contact between the seedlings held by the respective sheet pieces 25 of the seedling sheet 21 wound around the driven sprocket 41 located below the transmission shaft 46, and the gear box 43 and the shaft holder. The vertical length of 53 is set to such an extent that contact of the seedling with the transmission shaft 46 can be avoided, and thus the seedling leaf is prevented from being damaged.

A movable guide member 80 is arranged along the outer surface of the seedling sheet 21 on the outer side of the seedling sheet 21 between the transplantation table 33 and the driven sprocket 41.
A fixed guide member 83 along the inner surface of the seedling sheet 21 is fixedly arranged on the inner side of the seedling sheet 21 so as to be fixed to the transplantation table 33.

The base end of the movable guide member 80 is attached to the transplantation table 33.
A support shaft 81 fixedly disposed at a position near the end of the movable guide member 80 supports the driven sprocket 41 so that the driven sprocket 41 can rotate about an axis parallel to the rotation axis of the driven sprocket 41. The sheet piece 25 on the outer peripheral side of the seedling sheet 21 is brought into contact with the portion wound around the sprocket 41. Moreover, the spring 82 is contracted between the tip of the movable guide member 80 and the support frame 17, and the spring force of the spring 82 causes the movable guide member 8 to move.
0 is spring-biased in the direction of rotating the vicinity of its tip toward the side of the driven sprocket 41, so that the movable guide member 8
Sheet piece 2 near the tip of 0 is on the outer peripheral side of seedling sheet 21
5 will be contacted elastically.

Referring also to FIG. 14, the winding means 36
Is arranged diagonally below the transplantation table 33 between the transplantation table 33 and the drive sprocket 39, and includes an electric motor 85 as a drive source, a rotary shaft 86 connected to the electric motor 85, and a rotation shaft. A roller 87 is provided coaxially with the shaft 86, and a torque limiter 88 interposed between the rotary shaft 86 and the roller 87.

The electric motor 85 is fixedly arranged on a fixed support base 89, and a rotary shaft 86 is rotatably supported by a support cylinder 90 provided on the support base 89. A drive gear 91 is fixed to the output shaft 85a of the electric motor 85 below the support base 89, and a driven gear 92 fixed to the rotary shaft 86 is meshed with the drive gear 91. Therefore, the rotary shaft 86 is rotationally driven according to the operation of the electric motor 85.

Instead of using the electric motor 85 as the drive source, the power from the engine may be used as the drive power. For example, the transmission shaft 46 or the rotary drive shaft 47 may be used as the drive source. Is.

Below the driven gear 92, a flange 93 is fixed to the rotary shaft 86 so as to project outward in the radial direction.
The position along the axial direction of is regulated by pins 95 ₁ and 95 _2.
In this way, the torque limiter 88 is attached to the rotary shaft 86.
The torque limit by disabling relative rotation around the axis.
A flange 9 that extends outward in the radial direction at the lower end of a roller 87 that removably fits into the flange 88 from below and contacts the flange 93.
4 are provided. In addition, the rotary shaft 86 has
The engaging pin 95 ₃ is removably mounted.

The torque limiter 88 permits idling of the rotary shaft 86 in response to a torque action of a predetermined value or more, but the output rotational speed of the electric motor 85 is such that torque is transmitted from the rotary shaft 86 to the roller 87. When the roller 8 is
The outermost peripheral speed of the film 22 wound around the film 7 is set to be higher than the peripheral speeds of both the sprockets 39 and 41 in the feeding means 34.

The planting means 35 for stripping the sheet piece 25 from the film 22 of the seedling sheet 21 and planting it in the ground is disposed between the drive sprocket 39 and the driven sprocket 41 on the diagonally lower side of the transplantation table 33. A shaft 97, which is rotatably supported by a rear end portion of a transmission case 96 extending rearward from the support frame 17 and to which power from an engine is transmitted via a transmission mechanism (not shown) in the transmission case 96. And a pawl transmission case 98 to which the shaft 97 is fixed in the central portion, and both ends of the pawl transmission case 98 that are rotatably supported by the pawl transmission case 98 and have axes parallel to the shaft 97. A pair of shafts 9 to which power from a shaft 97 is transmitted via a built-in transmission mechanism (not shown).
9, 99, a pair of arms 100, 100 having their base ends fixed to their shafts 99, 99, and a transplanted nail 1 provided at the tips of these arms 100, 100, respectively.
01 and 101 are provided. Note that seedlings can also be transplanted with a single transplant nail 101.

The transplant nail 101 comprises a needle 102 fixed to the tip of the arm 100, and a seedling pusher 103 which is reciprocally movable along the needle 102 and is attached to the needle 102. Connection member 10 fixed to 103
4 is inserted into the arm 100. Thus, the connecting member 10
A driving mechanism (not shown) incorporated in the arm 100 is connected to the arm 4, and the driving mechanism operates by receiving power from a power transmission mechanism that transmits power to the shaft 97. As a result, the seedling pushing device 103 is reciprocally driven in synchronization with the rotating operation of the arm 100.

According to such planting means 35, the nail hook holes 2 of the seedling sheet 21 sent from the driven sprocket 41 to the drive sprocket 39 side in the feeding means 34.
9, the needle 102 of the transplanted nail 101 is engaged from the side of the film 22 and the arms 100, 1 by rotation of the shafts 97, 99, 99.
When the seedlings with the sheet pieces 25 peeled off from the film 22 are buried in the ground by the needles 102 by the rotation of 00, the seedling pushing tool 103 disengages the seedlings with the sheet pieces 25 from the needles 102. The seedling with the sheet piece 25 is planted by moving in the direction of pushing in.

15 and 16, seedling sheet 2
In order to prevent the sheet piece 25 detached from No. 1 from dropping from the needle 102 in the process of transporting the sheet piece 25 with seedlings to the ground surface 108 by the needle 102 of the transplant nail 101, the needle 10
The seedling guide 107 is attached to the frame 32 so as to guide the sheet piece 25 along the movement trajectory 106 of 2.

By the way, at the central portion between the driving and driven sprockets 39 and 41 of the feeding means 34, the sheet piece 25 of the seedling sheet 21 is put in the seedling 1 when the feeding of the feeding means 34 is stopped.
10 is held and stands by, the central portion between the drive and driven sprockets 39, 41 is set as the standby position P _W , and the seedling guide 107 is the sheet piece 2 with the seedling 110.
5 is attached to the frame 32 so as to guide the movement of the No. 5 from the standby position P _W.

The seedling guide 107 is formed by bending one wire, and is moved along the movement locus 106 at a position spaced from the movement locus 106 of the tip of the transplanted nail 101. A pair of linear guide portions 10 extending along
7a, 107a and linear receiving portions 107b, 107b, which are respectively provided adjacent to and facing the sheet piece 25 at the standby position P _W , and are connected to the upper ends of the guide portions 107a, 107a, respectively.
And linear escape portions 107c and 107c that are respectively provided continuously at the lower ends of the guide portions 107a and 107a, and the lower ends of both guide portions 107a and 107a are set at positions spaced above the ground surface 108. Both escape parts 107
The c and 107c are connected to the lower ends of the guide portions 107a and 107a so as to extend on the side opposite to the movement track 106.

Between the guide portions 107a and 107a, between the receiving portions 107b and 107b, and between the escape portions 107.
The interval between c and 107c is set to be equal to or less than the width of the sheet piece 25, and the receiving portion 107
mounting portions 107d that are respectively connected to b and 107b,
107d is attached to the frame 32 by bolts 111, 111, and the tips of both escape portions 107c, 107c are connected to the connecting portion 1
07e are connected to each other.

Further, on the outer periphery of the needle 102 provided in the transplantation nail 101, annular grooves 1 are formed at a plurality of positions spaced in the axial direction.
09, 109 ... Are provided.

[0051] To describe the operation of the real施例of Tsuginiko, each seedling transplantation apparatus 20 ₁ to 20 _6, seedlings sheet 21 having a plurality of sheet pieces 25 ... having one or a plurality of lines seedlings each, the Film 22 of seedling sheet 21
Are provided intermittently from the transplantation table 33 by a feeding means 34 having a driving sprocket 39 and a driven sprocket 41 engaged with the feeding holes 27, ..., 27, which are set between the driving sprocket 39 and the driven sprocket 41. Sheet pieces with seedlings 2 that are in a stopped state at the designated standby position P _W
5 is planted in the ground by the transplanting nail 101 of the planting means 35. Therefore, when transplanting seedlings using the strip-shaped seedling sheet 21 that is compact and lightweight and does not require the use of soil, each sheet piece 25 having one or a plurality of seedlings is peeled from the film 22 one by one. It becomes possible to plant it in the ground relatively reliably.

Moreover, in the feeding means 34, the drive sprocket 39 is attached to the drive shaft 42 which is intermittently driven to rotate.
Between the driven sprocket 41 and the driven shaft 52 which is fixed and is operated in synchronization with the drive shaft 42 by the synchronous interlocking mechanism 54 provided between the driven shaft 42 and the drive shaft 42. Since the torsion spring 64 that biases the driven sprocket 41 in the direction opposite to the rotation direction 68 of 52 is provided, the seedling sheet 21 can be appropriately tensioned between the driven sprocket 41 and the drive sprocket 39, and the planting means When the seedling-attached sheet piece 25 is peeled from the film 22 by the transplanting nail 101 of 35, the film 22 can be supported with an appropriate force, and the sheet pieces 25 one by one can be relatively reliably released from the film 22. It can be peeled off.

Further, the seedling sheet 21 from the transplantation table 33 is arranged with the seedling-attached sheet pieces 25 ...
1. The vicinity of the tip of the movable guide member 80, which is wound around the driven sprocket 39 and is rotatable about an axis parallel to the rotation axis of the driven sprocket 39, is a portion around which the seedling sheet 21 is wound around the driven sprocket 41 and the seedling-attached sheet piece 25. Since it is elastically brought into contact with the seedling sheet 21, the fixed guide member 83 fixedly arranged on the inner side of the seedling sheet 21 works together with the reliable guiding of the seedling sheet 21 from the transplantation table 33 to the driven sprocket 41 and the seedling sheet 21. It is possible to securely wind the driven sprocket 41 around the driven sprocket 41.

Further, the winding means 36 for winding the film 22 after the sheet piece 25 is peeled off between the driving sprocket 39 and the driven sprocket 41, the film is attached to the rotary shaft 86 connected to the drive source such as the electric motor 85. The roller 87 around which the winding 22 is wound is coaxially mounted via the torque limiter 88, and when the output rotation speed of the drive source such as the electric motor 85 is torque transmitted from the rotation shaft 86 to the roller 87. The outermost peripheral speed of the film 22 wound around the roller 87 depends on the sprocket 3 of the feeding means.
It is set to be higher than the peripheral speed of 9,41. Therefore, regardless of the winding thickness of the film 22 on the roller 87, an appropriate tension can be constantly applied to the film 22 between the drive sprocket 39 and the roller 87, and the film 22 can be prevented from being loosened while avoiding slack. The roller 87 can be reliably wound up.

A standby position P set at the center between the driving and driven sprockets 39, 41 of the feeding means 34.
_The seedling-attached sheet piece 25 waiting in _W is the planting means 35.
Although it is planted in the ground by the transplant nail 101 of
At that time, a seedling guide 107 for guiding the movement of the sheet piece 25 from the standby position P _W is attached to the frame body 32. The seedling guide 107 is formed by bending one wire, and the movement locus 10 is provided at a position spaced from the movement locus 106 of the tip of the transplant nail 101.
6, a pair of linear guide portions 107a, 10 extending along
7a, and the interval between the two guide portions 107a, 107a is set to be equal to or less than the width of the sheet piece 25. Therefore, the contact area with the sheet piece 25 can be made as small as possible to reliably guide the sheet piece 25, and the frictional resistance when the sheet piece 25 moves can be made as small as possible to reduce the power consumption of the planting means 35. The seedling 110 can be prevented from coming into contact with the seedling 110, and the seedling 110 is not damaged.

[0056] The proximate facing the sheet piece 25 in the standby position P _W wherein the guide portions 107a, the upper end in a linear receiving portion 107b of 107a, since 107b are continuously provided each of the standby position P _W The sheet piece 25 peeled off from the film 22 by the transplant nail 101 has two receiving portions 107b,
Immediately received by 107b, the transplanted nail 1
The detachment of the sheet piece 25 from 01 is prevented as much as possible. Moreover, a plurality of annular grooves 109 ... Are provided on the outer periphery of the needle 102 in the transplanted nail 101, and the needle 102 serves as the seat piece 2.
When fitted in the claw hooking hole 29 of No. 5, the inner surface of the sheet piece 25 made of an elastic material elastically engages with the respective grooves 109, which also causes the needle 102 of the sheet piece 25.
Is prevented as much as possible.

Further, the lower ends of the guide portions 107a, 107a are arranged at positions spaced above the ground surface 108, and the lower ends of the guide portions 107a, 107a are
Since the linear escape portions 107c and 107c extending on the opposite side of the movement locus 106 of the tip of the transplanted nail 101 are continuously provided, the sheet piece 2 guided by the guide portions 107a and 107a.
When 5 separates from both guide parts 107a, 107a, the seedlings 110 held by the sheet piece 25 become
It is possible to prevent the lower ends of 07a and 107a from being damaged.

By the way, in each of the seedling transplanting devices 20 _{1 to} 20 ₆ , a driven sprocket 41 around which the seedling sheet 21 from the transplantation table 33 is wound, and a drive sprocket 39 having the same rotation direction as the driven sprocket 41 are provided. It is arranged in parallel with the spacing from the transplantation table 33 being substantially the same, the winding means 36 is arranged between the drive sprocket 39 and the transplantation table 33, and the sheet piece 25 is engaged with the sheet piece 25 from the film 22 side. Since the planting means 35 for peeling off 22 is arranged between the drive sprocket 39 and the driven sprocket 41, it is possible to construct each of the seedling transplanting devices 20 _{1 to} 20 ₆ compactly.
In addition, the support frame 17 connected to the rear part of the riding work machine 1 includes a transplantation table 33 in a forward and upward posture, a feeding unit 34, a planting unit 35, and a winding unit arranged obliquely below and in front of the transplantation table 33. Since the picking means 36 is attached, each of the seedling transplanting devices 20 _{1 to} 20 ₆ can be added to the conventional riding rice transplanter _1.
Can be easily applied.

Further, the first to third seedling transplanting devices 20 _{1 to} 20
One end side along the parallel direction of ₃ , that is, the first seedling transplanting device 20
₁ drive shaft 42 and _4th- 6th seedling transplanting devices 20 4-20
One end side along the parallel direction of ₆ , that is, the fourth seedling transplanting device 20
The rotational power from the transmission shaft 46 extending along the arrangement direction of the respective seedling transplanting devices 20 _{1 to} 20 ₆ is input to the drive shaft 42 of ₄ via the operation converting mechanism 69, and the first and fourth seedling transplanting are performed. The drive shafts 42 of the devices 20 ₁ and 20 ₄ are driven intermittently, and the feeding means 34 of the second and third seedling transplanting devices 20 ₂ and 20 ₃ are fed.
The intermittent rotation power from the drive shaft 42 of the first seedling transplanting device 20 ₁ is sequentially transmitted to the
The intermittent rotation power from the drive shaft 42 of the fourth seedling transplanter 20 ₄ is sequentially transmitted to the feeding means 34 of the fifth and fifth seedling transplanters 20 ₅ and 20 ₆ via the power transmission mechanisms 70 and 70. . Therefore, the operation converting mechanism 69 for converting the rotational power of the transmission shaft 46 into the intermittent operating power of the feeding means 34 in each of the seedling transplanting devices 20 _{1 to} 20 ₆ is minimal (two in this embodiment), and is rotated. Power supply means 34
It is possible to simply and inexpensively configure a mechanism for converting to intermittent rotation power.

FIG. 17 shows a modified example of the seedling sheet, and each slit 26 of the seedling sheet 21 is made of paper or the like so as to partition the sheet pieces 25, 25 adjacent to each other. The shielding members 31 ... Are inserted, and these shielding members 31.
It functions to prevent the roots of the seedlings to be raised at 5, 25 from extending over the slit 26. It should be noted that the slit 26 along the longitudinal direction of the porous sheet 23 may be made relatively large to stop the insertion of the shielding member 31 ..., and continuous pores are eliminated from the side surface of the sheet piece 25 facing the slit 26. In such a case, it is possible to prevent the roots of the seedlings grown by the sheet pieces 25 from invading the adjacent sheet pieces 25 and simplify the planting of the sheet pieces with seedlings 25. .

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the claims. It is possible to do.

For example, the present invention can be applied to a plant that uses a pot with seedlings as a seedling holder, and the present invention can also be applied to a seedling transplanting device for transplanting seedlings using soil as a seedling holder. .

[0063]

As described above, according to the invention of claim 1, the seedling guide has a plurality of lines extending along the movement locus at positions spaced from the movement locus of the tip of the transplanted nail. Since the guide section is provided with a shape, and the interval between the guide sections is set to be equal to or less than the width of the seedling holder, the seedling guide can be manufactured inexpensively and easily by bending the linear member,
The contact area with the seedling holder can be made as small as possible to guide the seedling holder surely, and the frictional resistance when moving the seedling holder can be made as small as possible to reduce the power for driving the transplant nail. Moreover, contact with the seedlings can be avoided as much as possible and the seedlings are not damaged.

According to the invention of claim 2, in addition to the constitution of the invention of claim 1, the seedling guide is provided on the upper end of each of the guide parts so as to closely face the seedling holder at the standby position. Since it is equipped with a linear receiving part that is continuously installed, the seedling holder should be detached from the transplanted nail so that the seedling holder is received by the receiving part when the seedling holder is moved from the standby position by the transplanted nail. Can be prevented as much as possible.

According to the invention of claim 3, in addition to the structure of the invention of claim 1 or 2, the lower end of each guide portion is arranged at a position spaced upward from the ground surface, At the lower end of the guide part, linear relief parts that extend on the opposite side to the movement path of the transplanted nail are connected respectively, so that when the seedling holder is separated downward from each guide part, It is possible to prevent the seedlings from being damaged.

Further, according to the invention described in claim 4, in addition to the structure of the invention described in any one of claims 1 to 3, the transplanted nail is a nail hook provided on a seedling holder made of an elastic material. A needle that fits into the hole is provided, and grooves are provided at multiple locations on the outer circumference of the needle that are spaced in the axial direction, so that the seedling holding body can be elastically engaged with the groove of the needle to hold the seedling. The detachment of the body from the transplanted nail can be prevented more reliably.

[Brief description of drawings]

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

FIG. 2 is a view on arrow 2 of FIG.

FIG. 3 is a side view of a seedling sheet.

4 is an enlarged sectional view taken along line 4-4 of FIG.

5 is an enlarged sectional view taken along line 5-5 of FIG.

6 is an enlarged sectional view taken along line 6-6 of FIG.

FIG. 7 is a perspective view of a seedling sheet wound in a roll shape.

FIG. 8 is an enlarged side view taken along the arrow 8 of FIG.

9 is an enlarged view taken along arrow 9 of FIG.

10 is an enlarged cross-sectional view taken along line 10-10 of FIG.

FIG. 11 is a diagram showing an operation conversion mechanism in a gear box.

12 is an enlarged sectional view taken along line 12-12 of FIG.

FIG. 13 is a transverse cross-sectional view of a drive and driven sprocket before and after winding the seedling sheet.

FIG. 14 is an enlarged sectional view taken along line 14-14 of FIG.

FIG. 15 is an enlarged view of a main part of FIG.

16 is a view from arrow 16 of FIG.

FIG. 17 is a cross-sectional view corresponding to FIG. 6 of a modified example of the seedling sheet.

[Explanation of symbols]

20 _{1 to} 20 ₆ ... Seedling transplanting device 25 ... Sheet piece 101 as a seedling holding body ... Transplanting claw 102 ... Needle 106 ... Trajectory 107 ... Seedling guide 107a ... Guide Part 107b ... Receiving part 107c ... Escape part 109 ... Groove _PW ... Standby position

Front Page Continuation (72) Inventor Yasumi Fukuzumi 1-4-1 Chuo, Wako-shi, Saitama, Ltd. Inside Honda R & D Co., Ltd. (72) Inventor Katsuhisa Ichikawa 1-1-4, Chuo, Wako, Saitama Prefecture In the laboratory (72) Tsuneo Onodera, 9 Hataoka, Minamikata-cho, Tome-gun, Miyagi Prefecture, Paddy Laboratory, Ltd. (56) Reference: JP-A-6-197609 (JP, A), SAI 52-134524 (JP, U) ) Actual development Sho 60-62218 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A01C 11/02

Claims (4)

(57) [Claims] 1. A transplant nail (101) for planting seedlings held by a seedling holder (25) and waiting at a standby position (P _W ) in the ground together with the seedling holder (25), and a transplant nail (101). )
In the seedling transplantation device comprising a seedling guide (107) for guiding the movement of the seedling holder (25) from the standby position (P _W ) by the seedling guide (107), the seedling guide (107) is a movement trajectory of the tip of the transplant nail (101). A plurality of linear guide portions (107a) extending along the movement locus (106) are provided at positions spaced apart from the seedling holding body (25). ) The width of the seedling transplanter is equal to or less than the width. 2. The linear receiving guides (107) are linearly connected to the upper end of each guide part (107a) so as to closely face the seedling holding body (25) at the standby position (P _W ). The seedling transplanting device according to claim 1, further comprising a stop portion (107b). 3. The lower end of each of the guide portions (107a) is arranged at a position spaced upward from the ground surface (108), and the lower end of each of the guide portions (107a) has a graft claw (101). The seedling transplanting device according to claim 1 or 2, wherein linear escape portions (107c) extending on the side opposite to the movement locus (106) are provided in series. 4. The transplanted nail (101) is provided with a needle (102) fitted into a nail hooking hole (29) provided in a seedling holder (25) made of an elastic material, and the outer periphery of the needle (102). The seedling transplanting device according to any one of claims 1 to 3, wherein grooves (109) are provided at a plurality of positions spaced apart from each other in the axial direction.