JP2009296971A5 - - Google Patents
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- JP2009296971A5 JP2009296971A5 JP2008157034A JP2008157034A JP2009296971A5 JP 2009296971 A5 JP2009296971 A5 JP 2009296971A5 JP 2008157034 A JP2008157034 A JP 2008157034A JP 2008157034 A JP2008157034 A JP 2008157034A JP 2009296971 A5 JP2009296971 A5 JP 2009296971A5
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- soil
- covering
- seedling
- floor
- seeding
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- 239000002689 soil Substances 0.000 claims description 211
- 230000002262 irrigation Effects 0.000 claims description 52
- 238000003973 irrigation Methods 0.000 claims description 52
- 238000010899 nucleation Methods 0.000 claims description 49
- 238000009331 sowing Methods 0.000 claims description 42
- 238000000034 method Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 230000005540 biological transmission Effects 0.000 description 12
- 238000010521 absorption reaction Methods 0.000 description 6
- 241000196324 Embryophyta Species 0.000 description 4
- 230000037250 Clearance Effects 0.000 description 3
- 230000035512 clearance Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009408 flooring Methods 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000004642 transportation engineering Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 241000731961 Juncaceae Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 210000001364 Upper Extremity Anatomy 0.000 description 1
- 230000034303 cell budding Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drugs Drugs 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000000630 rising Effects 0.000 description 1
Description
本発明は、播種機に関する。 The present invention relates to a seeder.
育苗器に播種する播種機であって、前記育苗器を一方向に搬送する搬送経路を備え、該搬送経路に沿って該搬送経路の上手側から順に育苗器に床土を詰める床土詰装置と育苗器に播種する播種装置と育苗器に覆土する覆土装置とを設けた播種機が知られている（特許文献１参照。）。この種の播種機において、床土詰装置と播種装置の間又は播種装置と覆土装置の間に育苗器に灌水する灌水装置を設けたものがある。
上記背景技術の播種機によると、灌水装置が育苗器に灌水した後に播種又は覆土を行うが、床土詰装置により育苗器に詰めた土が、例えば粒径の小さい吸水性の悪い土質であると、育苗器に詰めた床土の上面に灌水した水が吸水されずに溜まった状態で播種又は覆土され、床土の上面に播種された種子が溜まった水と共に床土と覆土の間に閉じ込められやすくなり、播種された種子が酸欠を起こし出芽不良となるおそれがある。 According to the seeder of the above background art, seeding or covering soil is carried out after the irrigation device irrigates the seedling device, but the soil stuffed in the seedling device by the floor soiling device is, for example, a soil having a small particle size and poor water absorption. In addition, the water irrigated on the upper surface of the floor soil packed in the seedling device is sown or covered with water collected without being absorbed, and the seeds sowed on the upper surface of the floor soil are placed between the floor soil and the covered soil. It becomes easy to be trapped, and the seeds sowed may cause oxygen deficiency and become poorly budding.
また、この不具合を回避するために、播種又は覆土までに育苗器に灌水した水が床土の上面に溜まらず吸水されるように、灌水装置の灌水位置から次工程の播種装置の播種位置又は覆土装置の覆土位置までの間隔を大きく設定すると、吸水性の良い土を床土詰めするときは前記間隔が不必要に大きいことになり、播種機が長くなって配置スペースを要し、播種作業の作業性も悪くなるおそれがある。 Also, in order to avoid this problem, the irrigation position of the irrigation apparatus is changed from the irrigation position of the next process so that the water that has been irrigated to the seedling container before sowing or covering soil is absorbed without being accumulated on the upper surface of the floor soil. If the distance to the soil covering position of the soil covering device is set large, when filling soil with good water absorption, the space will be unnecessarily large, so that the seeder becomes longer and requires more space, sowing work There is a possibility that the workability of the machine may also deteriorate.
この発明は、上記課題を解決するべく次のような技術的手段を講じた。
すなわち、請求項１に係る発明は、育苗器（２）に播種する播種機であって、前記育苗器（２）を一方向に搬送する搬送経路（３）を備え、該搬送経路（３）に沿って該搬送経路（３）の上手側から順に育苗器（２）に床土を詰める床土詰装置（６）と育苗器（２）に播種する播種装置（７）と育苗器（２）に覆土する覆土装置（８）とを設け、床土詰装置（６）と播種装置（７）の間又は播種装置（７）と覆土装置（８）の間に育苗器（２）に灌水する灌水装置（２９）を設け、灌水装置（２９）の灌水位置から次工程の播種装置（７）の播種位置又は覆土装置（８）の覆土位置までの間隔を変更できる構成とした播種機とした。
In order to solve the above problems, the present invention has taken the following technical means.
That is, the invention according to claim 1 is a seeder for seeding a seedling device (2), comprising a transporting route (3) for transporting the seedling device (2) in one direction, the transporting route (3). A floor soil filling device (6) for filling the seedling planter (2) with the floor soil in order from the upper side of the transfer path (3), a seeding device (7) for seeding the seedling device (2), and a seedling device (2 ) Is provided with a soil covering device (8), and the seedling device (2) is irrigated between the floor soil filling device (6) and the seeding device (7) or between the seeding device (7) and the soil covering device (8). irrigation device (29) is provided, and the watering device (29) from the irrigation position of the next step of seeding device (7) for sowing position or soil covering device sowing machine to which the distance can change the configuration of up to soil cover position of (8) to did.
従って、この播種機によると、搬送経路（３）に沿って育苗器（２）を搬送させることにより、育苗器（２）に床土を詰め、播種し、覆土する。また、育苗器（２）に床土を詰めた後又は播種した後の覆土する前に、育苗器（２）に灌水する。そして、吸水性の悪い土を床土詰めするときは、灌水位置（２９）から播種位置又は覆土位置までの間隔を大きく変更し、播種又は覆土までに育苗器（２）に灌水した水が床土の上面に溜まらず吸水されるようにできる。逆に、吸水性の良い土を床土詰めするときは、灌水位置から播種位置又は覆土位置までの間隔を、播種又は覆土までに育苗器に灌水した水が床土の上面に溜まらず吸水される適宜の間隔に短く変更できる。
また、請求項２に係る発明は、灌水装置（２９）の灌水位置から次工程の播種装置（７）の播種位置又は覆土装置（８）の覆土位置までの間隔を、育苗器（２）の搬送方向の長さよりも大きく変更できる構成とした請求項１に記載の播種機とした。
また、請求項３に係る発明は、床土詰装置（６）には床土となる培土を貯留する床土タンク（５４）を設け、播種装置（７）には播種する種子を貯留する種子タンク（６８）を設け、覆土装置（８）には覆土となる培土を貯留する覆土タンク（８４）を設け、種子タンク（６８）の上端の開口よりも覆土タンク（８４）の上端の開口及び床土タンク（５４）の上端の開口を低位に配置した請求項１に記載の播種機とした。
また、請求項４に係る発明は、搬送経路（３）に設けた左右の搬送ガイド（１５）の間で育苗器（２）を搬送する構成とし、この育苗器（２）よりも左右幅の小さい育苗器（２）を搬送するときには、搬送経路（３）の左右一方側に着脱可能な規制ガイド（１１２）を取り付けて育苗器（２）の左右位置を規制すると共に、播種装置（７）から繰り出される種子を受ける受け容器（１１１）を搬送経路（３）の前記左右一方側の位置に設ける構成とした請求項１に記載の播種機とした。
Therefore, according to this seeder, the seedling device (2) is transported along the transport path (3), so that the seedling device (2) is filled with the soil, seeded, and covered. In addition, the seedling breeder (2) is irrigated before the seedling container (2) is filled with floor soil or before being seeded and then covered with soil. And when soil with poor water absorption is stuffed into the floor, the interval from the irrigation position (29) to the sowing position or the covering soil position is greatly changed, and the water irrigated to the seedling planter (2) until the sowing or covering soil becomes the floor. Water can be absorbed without collecting on the top surface of the soil. Conversely, when filling soil with good water absorption, the water from the irrigation position to the sowing position or covering position is absorbed by the seedling container before sowing or covering soil without accumulating on the upper surface of the floor soil. It can be changed to a suitable interval.
Moreover, the invention which concerns on Claim 2 WHEREIN: The space | interval from the irrigation position of the irrigation apparatus (29) to the sowing position of the sowing apparatus (7) of the next process or the covering position of the soil covering apparatus (8) The seeder according to claim 1, wherein the seeder is configured to be able to be changed to be larger than the length in the transport direction.
According to a third aspect of the present invention, the floor soil filling device (6) is provided with a floor soil tank (54) for storing the soil to be the floor soil, and the seeding device (7) is a seed for storing the seed to be sown. A tank (68) is provided, and the soil covering device (8) is provided with a soil covering tank (84) for storing the soil to be covered, and the upper end of the soil covering tank (84) is more open than the upper end of the seed tank (68). The seeder according to claim 1, wherein the opening at the upper end of the floor soil tank (54) is disposed at a low position.
Further, the invention according to claim 4 is configured to convey the nursery device (2) between the left and right conveyance guides (15) provided in the conveyance path (3), and has a lateral width wider than that of the nursery device (2). When transporting a small seedling device (2), a detachable regulation guide (112) is attached to the left and right sides of the transport path (3) to regulate the left and right position of the seedling device (2), and the sowing device (7) The seeding machine according to claim 1, wherein a receiving container (111) for receiving seeds fed out from the right side is provided at a position on the left or right side of the transport path (3).
請求項１に係る発明によると、床土の土質に拘らず播種又は覆土までに育苗器に灌水した水が床土の上面に溜まらず吸水されるように、灌水位置から播種位置又は覆土位置までの間隔を変更できるので、床土の上面に播種された種子が溜まった水と共に床土と覆土の間に閉じ込められて酸欠を起こし出芽不良となるのを防止できると共に、灌水位置から播種位置又は覆土位置までの間隔が不必要に大きくならないため、播種機が短くコンパクトになり、播種作業の作業性の向上が図れる。
請求項２に係る発明によると、請求項１に係る発明の効果に加えて、灌水装置２９の灌水作業で不具合があった育苗器２を即座に取り出すことができ、種子又は覆土の無駄を防ぐことができる。
請求項３に係る発明によると、請求項１に係る発明の効果に加えて、床土タンク５４への床土供給作業及び覆土タンク８４への覆土供給作業を低位で容易に行え、床土供給作業又は覆土供給作業を行うとき、誤って種子タンク６８へ床土又は覆土を供給することを防止できる。
請求項４に係る発明によると、請求項１に係る発明の効果に加えて、播種装置７から繰り出される種子を無駄にしないことができる。
According to the invention according to claim 1, from the irrigation position to the sowing position or the covering soil position so that the water irrigated to the seedling plant until seeding or covering soil is absorbed without being accumulated on the upper surface of the floor soil regardless of the soil quality of the floor soil. Since the seeds seeded on the upper surface of the floor soil can be trapped between the soil and the cover soil, it can be prevented from becoming deficient due to oxygen deficiency and the seeding position from the irrigation position. Or, since the distance to the soil covering position does not become unnecessarily large, the sowing machine becomes short and compact, and the workability of the sowing work can be improved.
According to the invention according to claim 2, in addition to the effect of the invention according to claim 1, it is possible to immediately take out the seedling raising device 2 that has failed in the irrigation work of the irrigation device 29, thereby preventing waste of seeds or covering soil. be able to.
According to the invention of claim 3, in addition to the effect of the invention of claim 1, the floor soil supply operation to the floor soil tank 54 and the soil cover supply operation to the cover soil tank 84 can be easily performed at a low level. When performing the work or the covering soil supply operation, it is possible to prevent the floor soil or covering soil from being erroneously supplied to the seed tank 68.
According to the invention according to claim 4, in addition to the effect of the invention according to claim 1, seeds fed out from the sowing device 7 can be not wasted.
この発明の実施の一形態を、以下に説明する。
図１及び図２に示すように、播種機（１）は、例えば水稲苗用の矩形の育苗箱等の育苗器（２）を一方向に搬送する搬送経路（３）を備え、該搬送経路（３）上に支持され該搬送経路（３）に沿って該搬送経路（３）の上手側から順に、上下に複数枚に積み重ねられた育苗器（２）を下側から順に繰り出して搬送経路（３）上に供給する育苗器供給装置（４）と、育苗器（２）に床土を詰める床土詰装置（６）と、床土を詰めた育苗器（２）に灌水する灌水装置（２９）と、育苗器（２）に播種する播種装置（７）と、育苗器（２）に覆土する覆土装置（８）を設けている。尚、育苗器供給装置（４）及び床土詰装置（６）及び播種装置（７）及び覆土装置（８）の各々の装置は、他の装置と独立して単独で設置できるように前後左右計４本の脚部（９，１０）で支持されている。尚、覆土装置（８）の前側の左右の脚部（１０）には上下に回動するアーム（１１）を介して該脚部（１０）の下端より下方に突出させることができる車輪（１２）を各々取り付けており、該車輪（１２）を下方に突出させ播種機（１）を持ち上げて他の脚部（９）を地面から浮かせることにより、播種機（１）を容易に移動させることができる。
One embodiment of the present invention will be described below.
As shown in FIGS. 1 and 2, the seeder (1) includes a transport path (3) for transporting a seedling device (2) such as a rectangular seedling box for paddy rice seedling in one direction, and the transport path. (3) Conveying path by feeding out seedling containers (2) stacked in a plurality of layers in order from the upper side to the conveying path (3) in order, supported from above, sequentially from the upper side of the conveying path (3) (3) A seedling feeder supply device (4) to be supplied above, a floor soil filling device (6) for filling the seedling device (2) with floor soil, and an irrigation device for irrigating the seedling device (2) packed with floor soil (29), a seeding device (7) for seeding the seedling device (2), and a soil covering device (8) for covering the seedling device (2). Each of the seedling feeder supply device (4), floor soil filling device (6), sowing device (7) and soil covering device (8) can be installed independently, independently of the other devices. It is supported by a total of four legs (9, 10). The left and right leg portions (10) on the front side of the soil covering device (8) can be protruded downward from the lower ends of the leg portions (10) via the arms (11) that rotate vertically. ) Are attached, and the seeding machine (1) is easily moved by lifting the seeding machine (1) by lifting the wheel (12) downward and lifting the other leg (9) from the ground. Can do.
搬送経路（３）は、左右の搬送ガイド（１５）で構成され、この左右の搬送ガイド（１５）の間で長手方向を前後に向けた育苗器（２）を搬送する構成となっている。搬送経路（３）には、駆動するコンベアとして、ベルト式の育苗器搬送コンベアである育苗器供給部搬送コンベア（１６）及び床土詰部搬送コンベア（１７）と、ローラ式の育苗器搬送コンベアである播種部搬送コンベア（１８）及び覆土部搬送コンベア（２８）とを備えている。そして、非駆動でフリーで回転するローラ式のコンベアとして、育苗器供給部搬送コンベア（１６）と床土詰部搬送コンベア（１７）の間に床土詰前コンベア（６２）を設け、床土詰部搬送コンベア（１７）と播種部搬送コンベア（１８）の間に灌水部コンベア（６３）を設け、播種部搬送コンベア（１８）と覆土部搬送コンベア（２８）の間に覆土前コンベア（６４）を設け、覆土部搬送コンベア（２８）の後側に育苗器取出コンベア（７５）を設けている。 A conveyance path | route (3) is comprised by the conveyance guide (15) on either side, and becomes a structure which conveys the seedling raising device (2) which orient | assigned the longitudinal direction back and forth between this left and right conveyance guide (15). In the transport path (3), as a conveyor to be driven, a seedling feeder feeding conveyor (16) and a floor soil filling section transporting conveyor (17), which are belt type seedling transporting conveyors, and a roller type seedling transporting conveyor And a sowing part conveyance conveyor (18) and a soil covering part conveyance conveyor (28). Then, as a roller-type conveyor that rotates in a non-driven and free manner, a pre-flooring conveyor (62) is provided between the nursery vessel supply unit transporting conveyor (16) and the floor soiling unit transporting conveyor (17). An irrigation section conveyor (63) is provided between the filling section transport conveyor (17) and the sowing section transport conveyor (18), and the pre-soil covering conveyor (64) is provided between the sowing section transport conveyor (18) and the soil covering section transport conveyor (28). ) And a nursery device take-out conveyor (75) is provided on the rear side of the soil covering section conveyor (28).
育苗器供給装置（４）は、上下に複数枚に積み重ねられた育苗器群を下側から受ける下受板（３４）と、前記育苗器群の下から２枚目の育苗器（２）を下側から受ける上受板（３５）と、育苗器群の最下位の育苗器（２）を強制的に下方へ落とす落とし板（３６）とを備え、人手等により上受板（３５）上に供給された育苗器群を先ず下受板（３４）上に引き継ぎ、上受板（３５）で育苗器群の下から２枚目の育苗器（２）から上側の育苗器（２）を支持した状態で下受板（３４）による育苗器群の最下位の育苗器（２）の支持を解除し、その状態で落とし板（３６）が最下位の育苗器（２）を上側から下方に押して育苗器群から分離して落下させて繰り出して育苗器供給部搬送コンベア（１６）上に供給し、以下この作動工程を繰り返すことにより育苗器群の下側の育苗器（２）から順に育苗器供給部搬送コンベア（１６）上に供給する構成となっている。尚、下受板（３４）、上受板（３５）及び落とし板（３６）は、育苗器群に作用する各々の部分が前後方向で重複しないように各々育苗器群の前後左右４箇所に設けられ、育苗器群の左右外側から作用し、育苗器供給部搬送コンベア（１６）の作動に連動し、育苗器供給部搬送コンベア（１６）上において先に供給した育苗器（２）と次に供給する育苗器（２）との間に隙間が生じないように作動する。伝動構成について説明すると、育苗器供給モータ（９４）に設けた出力スプロケット（９５）から搬送伝動チェーン（９６）及び駆動スプロケット（３８）へ伝動し、該駆動スプロケット（３８）と一体回転する搬送上手側のローラ（３７）を介して育苗器供給部搬送コンベア（１６）を駆動する。そして、駆動スプロケット（３８）からチェーン（３９）及び従動スプロケット（４０）を介して第一のカウンタ軸（４１）へ伝動し、該第一のカウンタ軸（４１）と一体回転する駆動スプロケット（４２）からチェーン（４３）、従動スプロケット（４４）及び一方向クラッチを介して第二のカウンタ軸（４５）へ伝動し、該第二のカウンタ軸（４５）の左右両端部に設けた駆動ベベルギヤ（４６）から従動ベベルギヤ（４７）を介して左右各々の落とし用軸（４８）を互いに反対側に駆動回転させる。この落とし用軸（４８）と落とし板（３６）とが一体回転し、落とし板（３６）が左右内側で下側に移行する方向に回転する。また、落とし用軸（４８）の他端部からアーム（４９，５１）及びリンク（５０）等を介して落とし用軸（４８）の上方に位置する各々の受板用軸（５２）を所定角度範囲内で揺動させ、該受板用軸（５２）と一体回転する下受板（３４）及び上受板（３５）を揺動させ、下受板（３４）と上受板（３５）とを育苗器群に交互に作用させて、育苗器群を順次下降させる。また、第二のカウンタ軸（４５）を手動で回転させるための手動供給操作具となる手動供給レバー（５３）を設けており、該手動供給レバー（５３）により作業者が任意に育苗器供給部搬送コンベア（１６）上に育苗器（２）を落下させて供給することができる。 The seedling feeder supply device (4) includes a receiving plate (34) that receives a group of seedlings stacked from above and below from the lower side, and a second seedling container (2) from the bottom of the group of seedlings An upper receiving plate (35) received from the lower side, and a dropping plate (36) for forcibly dropping the lowest raising seedling device (2) of the group of raising plants, are provided on the upper receiving plate (35) manually. The seedling device group supplied to the first is handed over to the lower receiving plate (34), and the upper receiving plate (35) is used to transfer the second seedling device (2) from the lower seedling device group to the upper one (2). In the supported state, release the support of the lowest seedling device (2) of the seedling group by the lower receiving plate (34), and in that state, the drop plate (36) lowers the lowest seedling device (2) from above The seedling device group is separated from the seedling device group, dropped, fed out and supplied onto the seedling device supply section conveyor (16), and this operation process is repeated thereafter. Has nursery unit group the lower nursery unit (2) and supplies constructed on nursery unit supply section conveyor in order (16) by. The lower receiving plate (34), the upper receiving plate (35), and the dropping plate (36) are arranged at four positions on the front, rear, left and right sides of the nursery group so that the portions acting on the nursery group do not overlap in the front-rear direction. Next to the nursery device (2) previously provided on the nursery device supply unit transport conveyor (16), which is provided and acts from the left and right outer sides of the seedling device group, interlocked with the operation of the nursery device supply unit transport conveyor (16) It operates so that there is no gap between it and the nursery device (2) to be fed to the plant. The transmission structure will be described. The transfer sprocket is transmitted from the output sprocket (95) provided in the seedling feeder supply motor (94) to the transfer transmission chain (96) and the drive sprocket (38) and rotates integrally with the drive sprocket (38). The seedling feeder supply unit transport conveyor (16) is driven through the roller (37) on the side. Then, the drive sprocket (42) is transmitted from the drive sprocket (38) to the first counter shaft (41) through the chain (39) and the driven sprocket (40) and rotates integrally with the first counter shaft (41). ) From the chain (43), the driven sprocket (44) and the one-way clutch to the second countershaft (45), and drive bevel gears provided on the left and right ends of the second countershaft (45) ( 46), the left and right dropping shafts (48) are driven to rotate opposite to each other via the driven bevel gear (47). The dropping shaft (48) and the dropping plate (36) rotate as a unit, and the dropping plate (36) rotates in the direction of moving downward on the left and right inner sides. Further, each receiving plate shaft (52) positioned above the dropping shaft (48) from the other end of the dropping shaft (48) via the arm (49, 51), the link (50) and the like is predetermined. The lower receiving plate (34) and the upper receiving plate (35) that are swung within the angular range and rotate integrally with the receiving plate shaft (52) are swung, and the lower receiving plate (34) and the upper receiving plate (35) are swung. ) Are alternately applied to the seedling group, and the seedling group is lowered sequentially. Further, a manual supply lever (53) serving as a manual supply operation tool for manually rotating the second counter shaft (45) is provided, and the manual supply lever (53) allows the operator to arbitrarily supply the nursery device. The seedling raising device (2) can be dropped and supplied onto the partial transport conveyor (16).
床土詰装置（６）は、床土となる培土を貯留する床土タンク（５４）と、該床土タンク（５４）内の床土を所定量ずつ繰り出して育苗器（２）へ落下させて供給する床土繰出具となる床土繰出ベルト（５５）と、育苗器（２）上で溢れる床土を均す均平具となる均平ブラシ（１９）と、育苗器（２）内に突入して床土を鎮圧する床土鎮圧具となる床土鎮圧ローラ（５７）と、床土繰出ベルト（５５）上の隙間を調節して床土の繰出量を変更調節する床土量調節具となる床土量調節レバーを備え、床土繰出ベルト（５５）が床土を供給する搬送経路（３）上の床土詰位置の搬送下手側に均平ブラシ（１９）が位置し、均平ブラシ（１９）の搬送下手側に床土鎮圧ローラ（５７）が位置する。床土詰装置（６）の伝動構成について説明すると、床土繰出モータ（２０）により床土繰出ベルト（５５）が駆動し、該床土繰出ベルト（５５）から歯車伝動機構を介して均平ブラシ（１９）が駆動する。また、床土詰搬送モータ（２１）に設けた出力スプロケット（９７）から搬送伝動チェーン（５９）を介して駆動スプロケット（６０）へ伝動し、該駆動スプロケット（６０）と一体回転する搬送下手側のローラ（６１）により床土詰部搬送コンベア（１７）を駆動する。尚、均平ブラシ（１９）と床土繰出ベルト（５５）とが互いに逆方向に回転するようになっている。尚、床土繰出モータ（２０）又は床土詰搬送モータ（２１）の一方の駆動で、床土繰出ベルト（５５）と均平ブラシ（１９）と床土詰部搬送コンベア（１７）へ伝動する構成としてもよい。 The floor soil filling device (6) feeds a predetermined amount of the floor soil tank (54) for storing the soil to be used as the floor soil, and drops the soil into the nursery device (2). Floor soil feeding belt (55) serving as a floor soil feeding tool to be supplied, leveling brush (19) serving as a leveling tool for leveling the floor soil overflowing on the nursery device (2), and inside the nursery device (2) The floor soil pressure roller (57), which is a floor soil pressure reducing tool that rushes into the floor and compresses the floor soil, and the amount of floor soil that changes and adjusts the amount of floor soil delivered by adjusting the clearance on the floor soil delivery belt (55) A leveling brush (19) is provided on the lower conveyance side of the floor soiling position on the conveyance path (3) on which the floor soil supply belt (55) supplies the floor soil. The floor soil pressure reducing roller (57) is positioned on the lower conveyance side of the leveling brush (19). The transmission structure of the floor soil filling device (6) will be described. The floor soil feeding belt (55) is driven by the floor soil feeding motor (20), and the floor soil feeding belt (55) is leveled through a gear transmission mechanism. The brush (19) is driven. In addition, the lower side of the transport that is transmitted from the output sprocket (97) provided in the floor soil transport motor (21) to the drive sprocket (60) via the transport transmission chain (59) and rotates integrally with the drive sprocket (60). The floor soiling section conveyor (17) is driven by the roller (61). The leveling brush (19) and the floor soil feeding belt (55) rotate in opposite directions. In addition, it is transmitted to a floor soil feeding belt (55), a leveling brush (19), and a floor soiling portion transport conveyor (17) by driving one of the floor soil feeding motor (20) or the floor soil transporting motor (21). It is good also as composition to do.
播種装置（７）は、播種する種子（種籾）を貯留する種子タンク（６８）と、該種子タンク（６８）内の種子を間欠的に所定量ずつ繰り出して育苗器（２）へ落下させて播種位置で供給する外周に所定のピッチで複数の繰出溝を備える種子繰出具となる種子繰出ローラ（６９）と、該種子繰出ローラ（６９）の外周面に接触して該種子繰出ローラ（６９）の繰出溝から溢れる種子を除去する除去ブラシ（７０）と、種子繰出ローラ（６９）に臨む種子タンク（６８）の出口の隙間を調節して種子繰出ローラ（６９）への種子の供給状態を変更調節する種子供給調節具となる種子供給調節ハンドル（７２）を備える。播種装置（７）の伝動構成について説明すると、播種モータ（６５）に設けた出力スプロケット（６６）から繰出伝動チェーン（６７）を介して種子繰出ローラ（６９）へ伝動され、前記出力スプロケット（６６）から第一除去チェーン（７３）及び第二除去チェーン（７４）を介して除去ブラシ（７０）へ伝動され、前記出力スプロケット（６６）から搬送伝動チェーン（７１）を介して播種部搬送コンベア（１８）の搬送下手側のローラ（７５）へ伝動し、該搬送下手側のローラ（７５）からチェーン（７７）を介して搬送上手側のローラ（７６）へ伝動する。尚、搬送上手側のローラ（７６）と搬送下手側のローラ（７５）の間に、播種位置がある。尚、除去ブラシ（７０）及び播種部搬送コンベア（１８）と種子繰出ローラ（６９）とが互いに逆方向に回転するべく、第一除去チェーン（７３）と搬送伝動チェーン（７１）を側面視で交差するように巻き掛けている。尚、種子繰出ローラ（６９）の外周部において除去ブラシ（７０）の位置と播種位置との間には、繰出溝から種子が脱落しないように該繰出溝を覆うガイド体を設けている。 The seeding device (7) has a seed tank (68) that stores seeds to be seeded (seed seeds), and seeds in the seed tank (68) are intermittently fed out by a predetermined amount and dropped into a seedling breeder (2). A seed feeding roller (69) serving as a seed feeding tool having a plurality of feeding grooves at a predetermined pitch on the outer periphery supplied at the sowing position, and the seed feeding roller (69 in contact with the outer peripheral surface of the seed feeding roller (69) ) Of the removal brush (70) that removes the seed overflowing from the feeding groove and the gap between the outlet of the seed tank (68) facing the seed feeding roller (69) is adjusted to supply the seed to the seed feeding roller (69). A seed supply adjustment handle (72) serving as a seed supply adjustment tool for changing and adjusting The transmission configuration of the seeding device (7) will be described. The output sprocket (66) provided in the seeding motor (65) is transmitted to the seed feeding roller (69) through the feeding transmission chain (67), and the output sprocket (66) ) To the removal brush (70) via the first removal chain (73) and the second removal chain (74), and from the output sprocket (66) to the seeding part conveyance conveyor (71) via the conveyance transmission chain (71). 18) is transmitted to the roller (75) on the lower conveyance side, and is transmitted from the roller (75) on the lower conveyance side to the roller (76) on the upper conveyance side via the chain (77). There is a seeding position between the roller (76) on the upper conveyance side and the roller (75) on the lower conveyance side. In addition, the first removal chain (73) and the conveyance transmission chain (71) are viewed in a side view so that the removal brush (70) and the sowing part conveyance conveyor (18) and the seed feeding roller (69) rotate in opposite directions. It is wrapped around to intersect. A guide body that covers the feeding groove is provided between the position of the removal brush (70) and the sowing position on the outer periphery of the seed feeding roller (69) so that the seed does not fall off from the feeding groove.
覆土装置（８）は、覆土となる培土を貯留する覆土タンク（８４）と、該覆土タンク（８４）内の覆土を所定量ずつ繰り出して育苗器（２）へ落下させて覆土位置で供給する覆土繰出具となる覆土繰出ベルト（８５）と、育苗器（２）上で溢れる覆土を均す均平具となる均平板（８６）と、覆土繰出ベルト（８５）上の隙間を調節して覆土の繰出量を変更調節する覆土量調節具となる覆土量調節レバーとを備え、覆土繰出ベルト（８５）が覆土を供給する搬送経路（３）上の覆土位置の搬送下手側に均平板（８６）が位置する。覆土装置（８）の伝動構成について説明すると、覆土モータ（７８）により覆土繰出ベルト（８５）が駆動し、覆土モータ（７８）に設けた出力スプロケット（７９）から搬送伝動チェーン（８０）を介して覆土部搬送コンベア（２８）の搬送下手側のローラ（８１）へ伝動し、該搬送下手側のローラ（８１）からチェーン（９８）を介して搬送上手側のローラ（８２）へ伝動する。尚、搬送上手側のローラ（８２）と搬送下手側のローラ（８１）の間に、覆土位置がある。尚、覆土繰出ベルト（８５）と覆土部搬送コンベア（２８）とが互いに逆方向に回転するべく、搬送伝動チェーン（８０）を側面視で交差するように巻き掛けている。 The soil covering device (8) feeds the soil covering in the soil covering tank (84) for storing the soil to be covered with soil, and the soil covering in the soil covering tank (84) by a predetermined amount, drops it to the nursery device (2), and supplies it at the soil covering position. Adjust the clearance on the soil covering belt (85), the soil covering belt (85), the leveling plate (86) serving as a leveling device for leveling the soil covering on the nursery device (2), and the clearance on the soil covering belt (85). A soil covering amount adjusting lever that serves as a soil covering amount adjusting tool for changing and adjusting the amount of covering soil, and a leveling plate (8) 86) is located. The transmission configuration of the soil covering device (8) will be described. The soil covering belt (85) is driven by the soil covering motor (78), and the output sprocket (79) provided on the soil covering motor (78) is passed through the transport transmission chain (80). Then, it is transmitted to the roller (81) on the lower conveyance side of the soil covering section conveyance conveyor (28), and is transmitted from the roller (81) on the lower conveyance side to the roller (82) on the upper conveyance side through the chain (98). There is a soil covering position between the roller (82) on the upper conveyance side and the roller (81) on the lower conveyance side. In addition, the conveyance transmission chain (80) is wound so that it may cross | intersect in a side view so that a covering soil supply belt (85) and a covering soil conveyance conveyor (28) may rotate in a mutually reverse direction.
覆土装置（８）の前側の脚部（１０）には、育苗器搬送コンベアを手動で回転させるための操作具となる手動搬送ハンドル（９２）をフック（９３）を介して保持している。この手動搬送ハンドル（９２）により、播種装置（７）で播種をしている途中で故障で播種機（１）が停止したときや播種作業を終了するために播種機（１）を停止させたとき、手動で育苗器（２）を搬送して該育苗器（２）を播種機（１）から容易に取り出すことができる。 On the front leg (10) of the soil covering device (8), a manual transport handle (92) serving as an operation tool for manually rotating the nursery container transport conveyor is held via a hook (93). With this manual transfer handle (92), the seeder (1) was stopped when the seeder (1) stopped due to a failure during the sowing with the seeder (7) or to end the seeding operation. At this time, the nursery device (2) can be manually conveyed and the nursery device (2) can be easily taken out from the seeder (1).
灌水装置（２９）は、灌水部コンベア（６３）の上側に設けられ、灌水部コンベア（６３）の左右の搬送ガイド（１５）から各々立ち上がる左右の支持フレーム（１００）を設け、左右に配列される複数のノズルを備える左右に延びる灌水パイプ（９９）を、左右の支持フレーム（１００）で両持ち支持している。該灌水パイプ（９９）すなわち灌水位置は、灌水部コンベア（６３）の搬送上手寄りの位置に配置されている。 The irrigation device (29) is provided on the upper side of the irrigation unit conveyor (63), and is provided with left and right support frames (100) respectively rising from the left and right conveyance guides (15) of the irrigation unit conveyor (63), and is arranged on the left and right. The left and right irrigation pipes (99) having a plurality of nozzles are both supported by the left and right support frames (100). The irrigation pipe (99), that is, the irrigation position, is arranged at a position closer to the conveyance of the irrigation unit conveyor (63).
床土詰前コンベア（６２）及び灌水部コンベア（６３）及び覆土前コンベア（６４）及び育苗器取出コンベア（７５）の各々のコンベアは、左右の搬送ガイド（１５）の前後端部で搬送上手側及び搬送下手側の装置に嵌る嵌合部材（１０１）により、播種機（１）本体に対して独立して個別に着脱可能に設けられている。従って、図６に示すように、これらのコンベアを短いものに組み替えることにより、各装置間の距離を変更でき、ひいては灌水装置の灌水位置から次工程の播種装置（７）の播種位置及び覆土装置（８）の覆土位置までの間隔を変更できる。また、床土詰前コンベア（６２）及び灌水部コンベア（６３）及び覆土前コンベア（６４）及び育苗器取出コンベア（７５）の各々のコンベアは、育苗器（２）の長手方向の長さ（６０ｃｍ）より長く設定されている。従って、育苗器供給装置（４）と床土詰装置（６）と播種装置（７）と覆土装置（８）の何れの装置で育苗器（２）への作業の不具合があっても、その直後で不具合のあった育苗器（２）を即座に取り出すことができ、無駄な作業を防止でき、床土や種子や覆土の無駄を防ぐことができる。しかも、灌水部コンベア（６３）の灌水位置より後側部分自体が育苗器（２）の長手方向の長さ（６０ｃｍ）より長く設定されているので、灌水作業で不具合があった育苗器（２）を即座に取り出すことができ、種子や覆土の無駄を防ぐことができる。 Each conveyor of the pre-flooring conveyor (62), the irrigation section conveyor (63), the pre-covering conveyor (64), and the nursery device take-out conveyor (75) is well transported at the front and rear ends of the left and right transport guides (15). By the fitting member (101) which fits into the apparatus of the side and conveyance lower side, it is provided so that attachment or detachment is possible independently with respect to the seeder (1) main body. Therefore, as shown in FIG. 6, by changing these conveyors to short ones, the distances between the devices can be changed. As a result, the sowing position and the soil covering device of the sowing device (7) in the next step from the irrigation position of the irrigation device. The distance to the soil covering position in (8) can be changed. In addition, the conveyors of the pre-flooring conveyor (62), the irrigation section conveyor (63), the pre-covering conveyor (64), and the nursery device takeout conveyor (75) are the lengths in the longitudinal direction of the nursery device (2) ( 60 cm). Therefore, even if there is a malfunction in the nursery device (2) in any of the seedling feeder supply device (4), floor soil filling device (6), seeding device (7), and soil covering device (8), Immediately after that, the seedling raising device (2) having a defect can be immediately taken out, wasteful work can be prevented, and floor soil, seeds and covering soil can be prevented from being wasted. Moreover, since the rear portion itself of the irrigation part conveyor (63) is set to be longer than the length (60 cm) in the longitudinal direction of the seedling device (2), the seedling device (2 ) Can be taken out immediately, and waste of seeds and soil covering can be prevented.
また、灌水部コンベア（６３）を播種装置（７）と覆土装置（８）の間に組み付けることにより、播種装置（７）と覆土装置（８）の間に灌水装置（２９）を配置することができる。あるいは、灌水部コンベア（６３）を覆土装置（８）の後側に組み付けることにより、覆土後に灌水する構成とすることもできる。これらの場合も、灌水部コンベア（６３）を組み替えて該灌水部コンベア（６３）の長さを変更できる構成とすればよい。 Further, the irrigation device (29) is arranged between the seeding device (7) and the soil covering device (8) by assembling the irrigation part conveyor (63) between the seeding device (7) and the soil covering device (8). Can do. Or it can also be set as the structure which irrigates after soil covering by assembling the irrigation part conveyor (63) to the back side of the soil covering apparatus (8). In these cases, the irrigation unit conveyor (63) may be rearranged to change the length of the irrigation unit conveyor (63).
以上により、この播種機（１）は、育苗器（２）に播種する播種機であって、前記育苗器（２）を一方向に搬送する搬送経路（３）を備え、該搬送経路（３）に沿って該搬送経路（３）の上手側から順に育苗器（２）に床土を詰める床土詰装置（６）と育苗器（２）に播種する播種装置（７）と育苗器（２）に覆土する覆土装置（８）とを設け、床土詰装置（６）と播種装置（７）の間又は播種装置（７）と覆土装置（８）の間に育苗器（２）に灌水する灌水装置（２９）を設け、灌水部コンベア（６３）を組み替えることにより、灌水装置（２９）の灌水位置から次工程の播種装置（７）の播種位置及び覆土装置（８）の覆土位置までの間隔を変更できる構成とした。 As described above, the seeder (1) is a seeder for seeding the seedling device (2), and includes the transport path (3) for transporting the seedling device (2) in one direction. ) Along the transport path (3) from the upper side to the seedling device (2), the floor soil filling device (6), the seedling device (2), the seeding device (7) and the seedling device ( 2) is provided with a soil covering device (8) for covering soil, and the seedling device (2) is provided between the floor soil filling device (6) and the seeding device (7) or between the seeding device (7) and the soil covering device (8). By providing an irrigation device (29) for irrigation and rearranging the irrigation unit conveyor (63), the sowing position of the sowing device (7) in the next step and the covering position of the soil covering device (8) from the irrigation position of the irrigation device (29) The interval can be changed.
従って、搬送経路（３）に沿って育苗器（２）を搬送させることにより、育苗器（２）に床土を詰め、播種し、覆土する。また、育苗器（２）に床土を詰めた後の覆土する前に、育苗器（２）に灌水する。そして、例えば水田の土壌等、吸水性の悪い土を床土詰めするときは、灌水部コンベア（６３）を長いものに組み替えることで灌水位置から播種位置及び覆土位置までの間隔を大きく変更し、播種及び覆土までに育苗器に灌水した水が床土の上面に溜まらず吸水されるようにできる。逆に、吸水性の良い土を床土詰めするときは、灌水部コンベア（６３）を短いものに組み替え、灌水位置から播種位置及び覆土位置までの間隔を、播種及び覆土までに育苗器に灌水した水が床土の上面に溜まらず吸水される適宜の間隔に短く変更できる。 Accordingly, by transporting the seedling device (2) along the transport path (3), the seedling device (2) is filled with the soil, sown, and covered. In addition, before the seedling device (2) is filled with floor soil and before covering, the seedling device (2) is watered. And, for example, when padding soil with poor water absorption, such as paddy soil, by changing the irrigation section conveyor (63) to a long one, the interval from the irrigation position to the sowing position and the covering soil position is greatly changed, Water that has been irrigated to the seedling container before sowing and covering soil can be absorbed without collecting on the upper surface of the floor soil. On the other hand, when soil with good water absorption is filled with floor soil, the irrigation unit conveyor (63) is replaced with a short one, and the seedling device is irrigated with the intervals from the irrigation position to the sowing position and the covering soil position until the sowing and covering soil. The water can be changed to an appropriate interval for absorbing water without collecting on the upper surface of the floor soil.
よって、床土の土質に拘らず播種及び覆土までに育苗器に灌水した水が床土の上面に溜まらず吸水されるように、灌水位置から播種位置及び覆土位置までの間隔を変更できるので、床土の上面に播種された種子が溜まった水と共に床土と覆土の間に閉じ込められて酸欠を起こし出芽不良となるのを防止できると共に、灌水位置から播種位置及び覆土位置までの間隔が不必要に大きくならないため、播種機が短くコンパクトになり、作業者が、育苗器供給装置（４）へ空の育苗器（２）を供給したり、床土詰装置（６）の床土タンク（５４）へ床土を供給したり、播種装置（７）の種子タンク（６８）へ種子を供給したり、覆土装置（８）の覆土タンク（８４）へ覆土を供給したり、育苗器取出コンベア（７５）から播種作業が終わった育苗器（２）を取り出したりする作業において、相互の作業をあまり移動せずに容易に行え、播種作業の作業性の向上が図れる。 Therefore, since the water irrigated to the seedling plant until sowing and covering soil regardless of the soil quality of the floor soil can be absorbed without collecting on the upper surface of the floor soil, the interval from the irrigation position to the sowing position and the covering soil position can be changed, The seeds sowed on the upper surface of the floor soil are confined between the floor soil and the cover soil together with the accumulated water, and it is possible to prevent a lack of sprouting due to oxygen deficiency and the distance from the irrigation position to the sowing position and the cover soil position. Since it does not become unnecessarily large, the seeder becomes short and compact, and the operator supplies an empty seedling device (2) to the seedling device supply device (4) or the floor soil tank of the floor soil filling device (6). (54) Supplying floor soil, supplying seed to seed tank (68) of seeding device (7), supplying soil to covering soil tank (84) of soil covering device (8), taking out seedling device Seedling device that has been seeded from the conveyor (75) In operation of taking out the 2), can mutual work easily without significant movement, thereby improving the workability of the seeding operations.
尚、種子タンク（６８）の上端の開口より覆土タンク（８４）の上端の開口を低位に設け、覆土タンク（８４）の上端の開口より床土タンク（５４）の上端の開口を低位に設けている。これにより、使用量が多いため作業者が頻繁に床土タンク（５４）へスコップで床土を供給しなければならないが、この床土供給作業を低位で容易に行え、次いで供給頻度が高い覆土タンク（８４）への覆土供給作業を容易に行える。しかも、種子タンク（６８）の上端の開口が高位となるので、床土供給作業又は覆土供給作業を行うとき、誤って種子タンク（６８）へ床土又は覆土を供給するようなことを防止でき、土が供給されることで播種装置（７）が故障するようなことを防止できる。 The upper end opening of the soil covering tank (84) is provided lower than the upper end opening of the seed tank (68), and the upper end opening of the floor soil tank (54) is provided lower than the upper end opening of the soil covering tank (84). ing. As a result, since the amount of use is large, an operator must frequently supply floor soil to the floor soil tank (54) with a scoop. This floor soil supply operation can be easily performed at a low level, and then the cover soil having a high supply frequency is used. The covering soil supply operation to the tank (84) can be easily performed. In addition, since the opening at the upper end of the seed tank (68) is high, it is possible to prevent the floor or cover soil from being accidentally supplied to the seed tank (68) when performing the floor soil supply operation or the cover soil supply operation. The seeding device (7) can be prevented from malfunctioning due to the supply of soil.
床土タンク（５４）は変形可能なゴム製の弾性体（１１３）を介して支持されており、作業者が床土を供給する度にその重みで揺れる構成となっている。これにより、床土タンク（５４）内での床土のブリッジ現象を防止でき、特に水田の土壌等、ブリッジ現象を生じ易い土壌を床土として使用するとき、床土の繰り出しを適正に行える。尚、作業者がスコップ等で床土タンク（５４）に触れることで、床土タンク（５４）を揺らすこともできる。 The floor soil tank (54) is supported via a deformable rubber elastic body (113), and swings with its weight each time the operator supplies the floor soil. Thereby, the bridging phenomenon of the floor soil in the floor soil tank (54) can be prevented, and when the soil which is likely to cause the bridging phenomenon such as paddy soil is used as the floor soil, the floor soil can be properly fed out. The floor soil tank (54) can be shaken by the operator touching the floor soil tank (54) with a scoop or the like.
また、左右幅がコンベアの左右幅より小さい（３０ｃｍ未満の）育苗器（１１０）に播種作業を行うときは、図１に示すように、コンベアの左右一方側にコンベア搬送方向の適宜間隔で複数の規制ガイド（１１２）を取り付け、コンベア上の育苗器（１１０）の左右位置を規制するようにすればよい。このとき、播種装置（７）で繰り出される種子が前記左右一方側の部分で無駄になるので、この種子を受ける受け容器（１１１）を播種装置（７）下方で前記左右一方側の位置に配置すればよい。 In addition, when performing seeding work on a seedling device (110) whose left and right width is smaller than the left and right width of the conveyor (less than 30 cm), as shown in FIG. The regulation guide (112) may be attached to regulate the left and right positions of the nursery device (110) on the conveyor. At this time, the seeds fed out by the seeding device (7) are wasted at the left and right side portions, so that the receiving container (111) for receiving the seeds is disposed at the position on the left and right sides below the seeding device (7). do it.
尚、前述では、床土詰前コンベア（６２）及び灌水部コンベア（６３）及び覆土前コンベア（６４）及び育苗器取出コンベア（７５）の各々のコンベアを組み替えて、該コンベアの長さを変更する方法について説明したが、これらのコンベアを伸縮できる構成として長さを変更する構成としてもよい。このときは、該コンベアの左右の搬送ガイド（１５）を前後に複数に分割して重複させることによりコンベアを縮小し、該コンベアのローラの互いの間隔が変更される構成とすればよい。 In the above, the length of the conveyor is changed by rearranging the conveyors before the floor soil filling (62), the irrigation section conveyor (63), the before soil covering conveyor (64), and the nursery device takeout conveyor (75). Although the method to do was demonstrated, it is good also as a structure which changes length as a structure which can expand and contract these conveyors. In this case, the conveyor may be reduced by dividing the left and right conveyance guides (15) of the conveyor into a plurality of front and rear parts, and the distance between the rollers of the conveyor may be changed.
また、前述では、育苗器供給装置（４）と床土詰装置（６）と灌水装置（２９）と播種装置（７）と覆土装置（８）を独立して構成したが、育苗器供給装置（４）と床土詰装置（６）を一体で構成し、播種装置（７）と覆土装置（８）を一体で構成し、灌水部コンベア（６３）のみ組み替え又は伸縮できる構成としてもよい。 In the above description, the seedling feeder supply device (4), the floor filling device (6), the irrigation device (29), the seeding device (7), and the soil covering device (8) are configured independently. (4) and the floor soil filling device (6) may be configured integrally, the seeding device (7) and the soil covering device (8) may be configured integrally, and only the irrigation unit conveyor (63) may be rearranged or expanded.
１：播種機、２：育苗器、３：搬送経路、５：育苗ポット、６：床土詰装置、７：播種装置、８：覆土装置、１３：搬送用の孔、１７：搬送上手側の育苗器搬送スプロケット、１８：搬送下手側の育苗器搬送スプロケット、９４：薬剤供給装置 1: seeding machine, 2: seedling raising device, 3: transport route, 5: seedling pot, 6: floor soil filling device, 7: seeding device, 8: soil covering device, 13: hole for transportation, 17: upper side of transportation Nursery device transport sprocket, 18: Nursery device transport sprocket on the lower transport side, 94: Drug supply device
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| CN116420451B (en) * | 2023-05-09 | 2023-11-24 | 山东常林机械集团股份有限公司 | Multifunctional seeder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3533707B2 (en) * | 1994-06-28 | 2004-05-31 | 井関農機株式会社 | Seeding equipment |
| JPH11127696A (en) * | 1997-10-24 | 1999-05-18 | Suzutec Co Ltd | Fertilizing and seeding apparatus for nursery box |
| JP2000166318A (en) * | 1998-12-09 | 2000-06-20 | Daiwa Seiko Inc | Apparatus for handling seedling raising box |
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2008
- 2008-06-16 JP JP2008157034A patent/JP5176712B2/en not_active Expired - Fee Related
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