JP4809686B2 - Feeding device - Google Patents

Feeding device Download PDF

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JP4809686B2
JP4809686B2 JP2006024832A JP2006024832A JP4809686B2 JP 4809686 B2 JP4809686 B2 JP 4809686B2 JP 2006024832 A JP2006024832 A JP 2006024832A JP 2006024832 A JP2006024832 A JP 2006024832A JP 4809686 B2 JP4809686 B2 JP 4809686B2
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feeding
roll
feeding device
outer peripheral
recess
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JP2007202464A (en
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孝 白木
映明 有吉
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Agritecno Yazaki Co Ltd
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Agritecno Yazaki Co Ltd
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Description

本発明は、繰出ロールを回転させることにより一定量ずつ肥料や種子や薬剤等の粒状体を繰り出す繰出装置の構成に関するものである。   The present invention relates to a configuration of a feeding device that feeds granular materials such as fertilizers, seeds, and medicines by rotating a feeding roll by a certain amount.

従来から、トラクタ等の走行車両の後部に施肥播種機を取り付け、該施肥播種機においては、肥料、種子、薬剤等を充填するホッパーの下部に繰出装置を設け、該繰出装置中の繰出ロールを、トラクタの走行に合わせて回転させることで、肥料、種子、薬剤等の粒状体を一定量ずつ放出するようにしている。そして、このような施肥播種機では、ホッパー内の粒状体を、ホッパー上部から繰出ロールの繰出凹部に落入させ、繰出ロールの回転と共に下方に搬送して一定量ずつ繰り出すという技術が公知となっている。このような構成の繰出装置に関しては、特許文献1において種子の落下間隔にばらつきが生じないように繰出装置下部のガイドロートの内部に垂直面を設ける等の技術が開示されている。また、特許文献2及び特許文献3においては繰出ロールの外周部にガイド板を設けることで、播種精度を向上するという技術が開示されている。また、特許文献4においては回転可能なガイド体を用いて、種子を安定的に繰り出すという技術が開示されている。
特開2003−125615号公報 実公平3−79612号公報 特開平9−168317号公報 特開2005−58060号公報
Conventionally, a fertilizer seeding machine is attached to the rear part of a traveling vehicle such as a tractor, and in the fertilizer seeding machine, a feeding device is provided below a hopper that is filled with fertilizer, seeds, medicines, etc., and a feeding roll in the feeding device is provided. By rotating the tractor in accordance with the traveling of the tractor, granular materials such as fertilizers, seeds, and medicines are discharged in a certain amount. And in such a fertilizer seeding machine, the technique of dropping the granular material in the hopper into the feeding recess of the feeding roll from the upper part of the hopper, transporting it downward along with the rotation of the feeding roll, and feeding it by a fixed amount is known. ing. With respect to the feeding device having such a configuration, Patent Document 1 discloses a technique such as providing a vertical surface inside the guide funnel at the lower portion of the feeding device so as not to cause variations in seed drop intervals. Moreover, in patent document 2 and patent document 3, the technique of improving sowing precision by providing a guide plate in the outer peripheral part of a feeding roll is disclosed. Patent Document 4 discloses a technique for stably feeding seeds using a rotatable guide body.
JP 2003-125615 A Japanese Utility Model Publication No. 3-79612 JP-A-9-168317 JP 2005-58060 A

しかし、特許文献2及び特許文献3に開示されているようなガイド板を設けた繰出装置においては、ガイド板が板状の一体構造で形成されているために種子が繰出ロールとガイド板の間に噛み込んでしまうと、繰出ロールとガイド板との間に隙間が発生し繰出凹部から搬送途中の種子がこぼれ落ちることがあった。つまり、ガイド板のガイド機能が十分に働かず種子の落下間隔にばらつきが生じてしまっていたのである。さらに種子が大きなものになるほど上記のような問題が起こりやすくなり、点播間隔を一定にすることが難しくなり条播状態となってしまうのである。また、条播になった場合、苗が隙間を持たずに過密状態で成育することとなり、風を通さず空気が澱みやすくなる。その結果、湿気が溜まる原因となり、病気が発生しやすくなるのである。さらに一部で病気や害虫が発生した際にも、隣接する苗に伝染しやすいため広範囲に広がってしまうという課題がある。そのため精度良く点播を行う必要があるのである。
そこで、本発明においては、精度良く圃場に点播することができる繰出装置を提供することを目的とする。
However, in the feeding device provided with the guide plate as disclosed in Patent Literature 2 and Patent Literature 3, since the guide plate is formed in a plate-like integrated structure, the seed is bitten between the feeding roll and the guide plate. If this occurs, a gap may be generated between the feeding roll and the guide plate, and seeds in the middle of conveyance may spill out from the feeding recess. In other words, the guide function of the guide plate did not work sufficiently, resulting in variations in seed drop intervals. Furthermore, the larger the seeds, the more likely the problems described above occur, and it becomes difficult to maintain a constant seeding interval, resulting in a row seeding state. In addition, when the seedling is sown, the seedling grows in an overcrowded state without a gap, and air is easily stagnated without passing the wind. As a result, moisture accumulates and diseases are more likely to occur. Furthermore, even when a disease or pest occurs in some areas, there is a problem that it spreads to a wide area because it is easily transmitted to adjacent seedlings. Therefore, it is necessary to perform spotting with high accuracy.
Therefore, an object of the present invention is to provide a feeding device capable of spotting on a farm field with high accuracy.

本発明の解決しようとする課題は以上の如くであり、次にこの課題を解決するための手段を説明する。   The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

請求項1においては、粒状体を収容するホッパーと、該ホッパーの下部開口近傍に回転可能に設けられると共に外周部に繰出凹部を有する繰出ロールと、該繰出ロール下方の落下位置まで繰出ロールの外周を覆うことにより粒状体が前記繰出凹部から落下しないように案内するガイド部とを設けた繰出装置において、該ガイド部を、前記繰出ロールの外周部に摺接する低摩擦層と、弾性変形が可能な中間緩衝層と、繰出時に発生する応力によっても弾性変形しない剛性を有するベース部とにより構成し、前記ホッパーの下部開口近傍から前記ガイド部の間にブラシ部を設け、該ブラシ部の先端を前記繰出ロールの外周部に摺接させ、前記ブラシ部の上部に、繰出ロールの外周部に当接する擦り切り部を設け、該擦り切り部を前記繰出ロールの外周部に対して耐摩耗性のある部材で構成したものである。 In Claim 1, the hopper which accommodates a granular material, The feeding roll which is rotatably provided in the lower opening vicinity of this hopper, and has a feeding recessed part in an outer peripheral part, The outer periphery of a feeding roll to the fall position under this feeding roll In the feeding device provided with a guide portion that guides the granular material so as not to fall from the feeding recess by covering the guide portion, the guide portion can be elastically deformed with a low friction layer that is in sliding contact with the outer peripheral portion of the feeding roll. An intermediate buffer layer and a base portion having rigidity that is not elastically deformed even by a stress generated during feeding , a brush portion is provided between the guide portion from the vicinity of the lower opening of the hopper, and the tip of the brush portion is A scraping portion that is brought into sliding contact with the outer peripheral portion of the feeding roll and is in contact with the outer peripheral portion of the feeding roll is provided at an upper portion of the brush portion, and the scraping portion is provided on the feeding roll. Which is constituted by members having the wear-resistant with respect to the circumferential portion.

請求項2においては、請求項1記載の繰出装置において、前記繰出凹部が、前記繰出ロールの外周部に等間隔に配置されるとともに、前記繰出凹部間の円弧長が繰出凹部の円弧長の略2倍以上になるように設けたものである。 According to a second aspect of the present invention, in the feeding device according to the first aspect, the feeding recesses are arranged at equal intervals on the outer peripheral portion of the feeding roll, and the arc length between the feeding recesses is an abbreviation of the arc length of the feeding recess. It is provided to be twice or more.

請求項3においては、請求項1又は請求項2記載の繰出装置において、前記繰出凹部の相対する断面角部のうち少なくとも一方に、丸み又は面取りを施したものである。 According to a third aspect of the present invention, in the feeding device according to the first or second aspect, at least one of the opposing cross-sectional corners of the feeding recess is rounded or chamfered.

請求項4においては、請求項1乃至請求項3の何れか一項に記載の繰出装置において、前記繰出装置の下部に、風防手段を設け、該風防手段の本体または表面を、滑り性及び撥水性の良い部材で構成したものである。 According to a fourth aspect of the present invention, in the feeding device according to any one of the first to third aspects, a windshield means is provided at a lower portion of the feeding device, and the main body or surface of the windshield means is provided with a slippery and repellent surface. It is composed of a good water-based member.

本発明の効果として、以下に示すような効果を奏する。   As effects of the present invention, the following effects can be obtained.

請求項1においては、粒状体を収容するホッパーと、該ホッパーの下部開口近傍に回転可能に設けられると共に外周部に繰出凹部を有する繰出ロールと、該繰出ロール下方の落下位置まで繰出ロールの外周を覆うことにより粒状体が前記繰出凹部から落下しないように案内するガイド部とを設けた繰出装置において、該ガイド部を、前記繰出ロールの外周部に摺接する低摩擦層と、弾性変形が可能な中間緩衝層と、繰出時に発生する応力によっても弾性変形しない剛性を有するベース部と、により構成したことにより繰出ロールとガイド部との間に粒状体が噛み込んだ際に繰出凹部からの種子の落下を防ぐことができる。そのため従来よりも点播精度が向上し、点播間隔を一定にすることができる。   In Claim 1, the hopper which accommodates a granular material, The feeding roll which is rotatably provided in the lower opening vicinity of this hopper, and has a feeding recessed part in an outer peripheral part, The outer periphery of a feeding roll to the fall position under this feeding roll In the feeding device provided with a guide portion that guides the granular material so as not to fall from the feeding recess by covering the guide portion, the guide portion can be elastically deformed with a low friction layer that is in sliding contact with the outer peripheral portion of the feeding roll. The intermediate buffer layer and the base portion having rigidity that is not elastically deformed by the stress generated during feeding, so that the seed from the feeding recess when the granular material is caught between the feeding roll and the guide portion. Can prevent falling. Therefore, the spotting accuracy is improved as compared with the conventional case, and the spotting interval can be made constant.

また、前記ホッパーの下部開口近傍から前記ガイド部の間にブラシ部を設け、該ブラシ部の先端を前記繰出ロールの外周部に摺接させることにより、種子等の粒状体の繰出凹部への充填を効率よく行うことができる。   In addition, a brush portion is provided between the guide portion from the vicinity of the lower opening of the hopper, and the tip of the brush portion is brought into sliding contact with the outer peripheral portion of the feeding roll, thereby filling the feeding concave portion of granular materials such as seeds. Can be performed efficiently.

また、前記ブラシ部の上部に、繰出ロールの外周部に当接する擦り切り部を設け、該擦り切り部を前記繰出ロールの外周部に対して耐磨耗性のある部材で構成したことにより、前記中間緩衝層を設けた場合の粒状体の噛み込みを低減することが可能となる。また従来のブラシだけを用いたものよりも繰出ロールに対する擦り切り性能を向上させることができるため、種子等の粒状体の繰出凹部への充填を効率よく行うことができる。   Further, by providing a scraping portion that contacts the outer peripheral portion of the feeding roll at the upper portion of the brush portion, and the scraping portion is made of a member having wear resistance with respect to the outer peripheral portion of the feeding roll, It becomes possible to reduce the biting of the granular material when the buffer layer is provided. Moreover, since the scuffing performance with respect to the feeding roll can be improved as compared with the conventional one using only the brush, the filling of the feeding concave portion with the granular material such as seeds can be performed efficiently.

請求項2においては、前記繰出凹部が、前記繰出ロールの外周部に等間隔に配置されるとともに、前記繰出凹部間の円弧長が繰出凹部の円弧長の略2倍以上になるように規制したことにより、点播精度が向上し、点播間隔を一定することができる。 In Claim 2, the said feeding recessed part was arrange | positioned at equal intervals in the outer peripheral part of the said feeding roll, and it controlled so that the circular arc length between the said feeding recessed parts might be more than twice the circular arc length of a feeding recessed part. Thus, the spotting accuracy is improved and the spotting interval can be made constant.

請求項3においては、前記繰出凹部の相対する断面角部のうち少なくとも一方に、丸み又は面取りを施したことにより、繰出凹部において種子等の粒状体の擦り切りや出入りがスムーズにできる。 In Claim 3, by rounding or chamfering at least one of the opposing cross-sectional corners of the feeding recess, the particles such as seeds can be scraped off and in and out smoothly in the feeding recess.

請求項4においては、前記繰出装置の下部に、風防手段を設け、該風防手段の本体または表面を、滑り性及び撥水性の良い部材で構成したことにより、種子への風の影響や泥はねによる種子等の粒状体の落下間隔のばらつきを防止できる。 According to claim 4 , windshield means is provided at the lower part of the feeding device, and the windshield means has a main body or a surface made of a member having good slipperiness and water repellency, so that the influence of wind on the seeds and mud are reduced. It is possible to prevent variation in the interval of dropping of granular materials such as seeds due to the seeds.

次に、発明の実施の形態を説明する。   Next, embodiments of the invention will be described.

図1は本発明に係る繰出装置を搭載した施肥播種機の全体的な構成を示した全体側面図、図2は本発明に係る繰出装置を示した側面一部図、図3は同じく断面側面図、図4は本発明に係る繰出ロールの断面側面図である。   FIG. 1 is an overall side view showing the overall configuration of a fertilizer seeding machine equipped with a feeding device according to the present invention, FIG. 2 is a partial side view showing the feeding device according to the present invention, and FIG. 4 and 4 are sectional side views of the feeding roll according to the present invention.

図5は本発明に係る風防部を備えた湛水点播直播機の右斜め背面からの斜視図、図6は同じく背面からの斜視図、図7は湛水点播直播機の繰出装置下部からみた斜視図、図8は本発明に係る風防部を備えた繰出装置の断面側面図、図9は後端部が開放された風防部を備えた繰出装置の断面側面図、図10は後端部が開放された風防部の斜視図、図11は従来の繰出装置の断面側面図である。   FIG. 5 is a perspective view from the right rear side of a flooded spot direct sowing machine equipped with a windshield part according to the present invention, FIG. 6 is a perspective view from the same rear side, and FIG. 7 is a view from the lower part of the feeding device of the flooded spot sowing machine. FIG. 8 is a sectional side view of the feeding device provided with the windshield portion according to the present invention, FIG. 9 is a sectional side view of the feeding device provided with the windshield portion with the rear end opened, and FIG. 10 is the rear end portion. FIG. 11 is a sectional side view of a conventional feeding device.

本発明に係る繰出装置の実施例として、施肥播種機に搭載されるロールタイプの繰出装置の例を示す。但し、本発明は施肥機や播種機や薬剤散布機等にも適用でき、繰出装置を具備するものであれば特に限定するものではない。   As an example of the feeding device according to the present invention, an example of a roll-type feeding device mounted on a fertilizer seeder is shown. However, the present invention can be applied to a fertilizer applicator, a seeder, a chemical spreader, and the like, and is not particularly limited as long as it includes a feeding device.

図1にて本発明の施肥播種機1の全体構成から説明する。なお、以下の説明ではトラクターの進行方向である図1中の矢印Aの方向を前方とする。施肥播種機1は前上部に設けた取付フレーム35がトラクター等の走行車両の後部に設けたツールバーに装着され、左右に位置調整可能とされている。該取付フレーム35の後部に播種フレーム36が固設され、該播種フレーム36の後部に施肥用の繰出装置6が固設され、該繰出装置6の後部に播種用の繰出装置7が固定され、該繰出装置6・7の上部にホッパー4・5がそれぞれ脱着可能に設けられている。繰出装置6の下部にはガイドロート8が配設され、ガイドロート8下端にガイドパイプ10が連通されている。該ガイドパイプ10は、図1の側面手前かつ前方に湾曲し、その下端は作溝ディスク19の回転軸の略前方側面側に位置している。一方、繰出装置7の下部にはガイドロート9が配設され、該ガイドロート9の下端に導管12が連通されている。該導管12の下端はガイドパイプ11に挿入されている。ガイドパイプ11はローラーフレーム17に固定されており、ガイドパイプ11下端は作溝ディスク19・19間に挿入している(以下播種フレーム36、ホッパー4・5、繰出装置6・7、ガイドロート8・9、ガイドパイプ10、導管12等トラクターの後部に接続固定される部分を総称して「接続部2」とする)。   The overall configuration of the fertilizer seeder 1 according to the present invention will be described with reference to FIG. In the following description, the direction of the arrow A in FIG. The fertilizer seeding machine 1 has a mounting frame 35 provided at the front upper part attached to a tool bar provided at the rear part of a traveling vehicle such as a tractor, and can be adjusted in position from side to side. A sowing frame 36 is fixed to the rear portion of the mounting frame 35, a fertilizer feeding device 6 is fixed to the rear portion of the sowing frame 36, and a sowing feeding device 7 is fixed to the rear portion of the feeding device 6. The hoppers 4 and 5 are detachably provided on the upper portions of the feeding devices 6 and 7, respectively. A guide funnel 8 is disposed at the lower part of the feeding device 6, and a guide pipe 10 is communicated with the lower end of the guide funnel 8. The guide pipe 10 is curved in front of and in front of the side surface in FIG. 1, and the lower end thereof is positioned on the substantially front side surface side of the rotating shaft of the groove forming disk 19. On the other hand, a guide funnel 9 is disposed at the lower part of the feeding device 7, and a conduit 12 is communicated with the lower end of the guide funnel 9. The lower end of the conduit 12 is inserted into the guide pipe 11. The guide pipe 11 is fixed to the roller frame 17, and the lower end of the guide pipe 11 is inserted between the grooving disks 19 and 19 (hereinafter referred to as the sowing frame 36, the hoppers 4 and 5, the feeding devices 6 and 7, the guide funnel 8). (9) The parts connected and fixed to the rear part of the tractor such as the guide pipe 10 and the conduit 12 are collectively referred to as “connecting part 2”).

前記取付フレーム35の前面より下方に支持フレーム13が垂設され、該支持フレーム13の下部には平行リンク15・16が枢支軸31・32により回動自在に枢支され、下端に前記ガイドパイプ10下端を固定するための支持杆37が固定されている。前記平行リンク15・16の他端は後方へ延出されてローラーフレーム17の前部に枢支軸33・34により回動自在に枢支されている。該ローラーフレーム17の前端には支持杆18が固設され、下端に作溝ディスク19を平面視V 字状に回転自在に軸支している。そして、ローラーフレーム17より斜め下方に突設したアーム20の下端で作溝ディスク19の後部に覆土ディスク21を付設し、更に、ローラーフレーム17の前後中途部にローラーアーム22の前端を回動自在に枢支して後下方に突出し、該ローラーアーム22後部に鎮圧ローラー23を装着している(作溝ディスク19、覆土ディスク21、鎮圧ローラー23、ローラーフレーム17等平行リンク15・16の回動により圃場の凹凸に追随する部分を総称して「接地部3」とする)。   A support frame 13 is suspended below the front surface of the mounting frame 35, parallel links 15 and 16 are pivotally supported by pivot shafts 31 and 32 at the lower portion of the support frame 13, and the guide is provided at the lower end. A support rod 37 for fixing the lower end of the pipe 10 is fixed. The other ends of the parallel links 15 and 16 extend rearward and are pivotally supported by pivot shafts 33 and 34 at the front portion of the roller frame 17. A support rod 18 is fixed to the front end of the roller frame 17, and a groove forming disk 19 is pivotally supported at the lower end thereof so as to be rotatable in a V shape in plan view. Then, a soil covering disk 21 is attached to the rear part of the groove forming disk 19 at the lower end of the arm 20 projecting obliquely downward from the roller frame 17, and the front end of the roller arm 22 is rotatable in the middle of the front and rear of the roller frame 17. And a pressure-reducing roller 23 is mounted on the rear part of the roller arm 22 (rotating of the parallel links 15 and 16 such as the grooving disk 19, the soil covering disk 21, the pressure-reducing roller 23, and the roller frame 17). The parts following the unevenness of the field are collectively referred to as “grounding part 3”).

前記取付フレーム35後面より、付勢アーム14が後方へ突設され、該付勢アーム14とローラーフレーム17との間に付勢部材となる圧縮バネ24・38を外嵌した支持ロッド39が介装されている。該支持ロッド39の下端は支点軸25により枢支され、上部は支点軸26により摺動自在かつ回動自在に支持されている。こうして、接地部3は略一定圧で圃場に押し付けて、圃場の凹凸に追随しつつ付勢されるようにしている。   A biasing arm 14 projects rearward from the rear surface of the mounting frame 35, and a support rod 39 is provided between the biasing arm 14 and the roller frame 17 and externally fitted with compression springs 24 and 38 serving as biasing members. It is disguised. The lower end of the support rod 39 is pivotally supported by the fulcrum shaft 25, and the upper portion is supported by the fulcrum shaft 26 so as to be slidable and rotatable. In this way, the grounding portion 3 is pressed against the field with a substantially constant pressure, and is urged while following the unevenness of the field.

このような構成において、作業時にはホッパー4に粉粒状肥料を、ホッパー5に粒状体の一例である種子60を充填し、トラクター後部に施肥播種機1を装着してトラクターを前進させると、作溝ディスク19により圃場には断面V 字状の溝ができ、図示しない駆動機構により繰出装置6・7が駆動されて、ホッパー4から繰出装置6、ガイドロート8、ガイドパイプ10を経て圃場に形成された溝から所定距離離れた位置に肥料が投下される。一方、ホッパー5から繰出装置7、ガイドロート9、導管12、ガイドパイプ11を経て種子60が該溝に投下され、覆土ディスク21により覆土され、覆土ローラー23により鎮圧される。   In such a configuration, when the hopper 4 is filled with powdered fertilizer and the hopper 5 is filled with seed 60 which is an example of a granular body, and the fertilizer seeder 1 is attached to the rear of the tractor and the tractor is advanced, A disk 19 forms a V-shaped groove in the field, and the feeding devices 6 and 7 are driven by a drive mechanism (not shown) to be formed in the field from the hopper 4 through the feeding device 6, the guide funnel 8, and the guide pipe 10. Fertilizer is dropped at a position away from the groove by a predetermined distance. On the other hand, the seed 60 is dropped from the hopper 5 through the feeding device 7, the guide funnel 9, the conduit 12, and the guide pipe 11 into the groove, covered with the soil covering disk 21, and pressed by the soil covering roller 23.

次に、繰出装置の構成について図2、図3を用いて説明する。なお、繰出装置6・7は略同じ構成となっているので、種子の繰出装置7について説明する。繰出装置7は繰出ケース40と繰出ロール41と繰出駆動軸42とブラシ部43よりなり、繰出ケース40は上方及び下方を開放して、上部にホッパー5の下部を連通し、下部にロート9を連通接続している。繰出ケース40の上下前後略中央に繰出駆動軸42が左右水平方向に貫通され、該繰出駆動軸42上に繰出ロール41が外嵌されて、該繰出ロール41は繰出ケース40内に収納されている。   Next, the configuration of the feeding device will be described with reference to FIGS. Since the feeding devices 6 and 7 have substantially the same configuration, the seed feeding device 7 will be described. The feeding device 7 includes a feeding case 40, a feeding roll 41, a feeding drive shaft 42, and a brush portion 43. The feeding case 40 opens upward and downward, communicates the lower part of the hopper 5 to the upper part, and the funnel 9 to the lower part. Communication connection is established. A feeding drive shaft 42 penetrates the feeding case 40 in the horizontal direction in the horizontal direction in the vertical center of the feeding case 40, a feeding roll 41 is fitted on the feeding driving shaft 42, and the feeding roll 41 is accommodated in the feeding case 40. Yes.

前記繰出ロール41の外周面には一定間隔をおいて繰出凹部41a・41a・・・(本実施例では4箇所)が形成されている。また、繰出ケース40の後面より繰出ロール41の中心に向かう如くブラシ部43が挿入されて、ブラシ部43の先端は繰出ロール41の外周面に接するように配設される。そして、ブラシ部43の下部から繰出ロール41最下位置近傍までを覆うようにガイド部50を配設している。   On the outer peripheral surface of the feeding roll 41, feeding recesses 41a, 41a,... (Four places in the present embodiment) are formed. Further, the brush portion 43 is inserted from the rear surface of the feeding case 40 toward the center of the feeding roll 41, and the tip of the brush portion 43 is disposed so as to contact the outer peripheral surface of the feeding roll 41. And the guide part 50 is arrange | positioned so that the lower part of the feed roll 41 may be covered from the lower part of the brush part 43. FIG.

このような構成において、繰出駆動軸42の回転駆動により繰出ロール41を矢印方向に回転すると、ホッパー5内に充填された種子60は繰出凹部41a内に嵌入し、この嵌入した状態で回転してブラシ部43によって、繰出凹部41a内に嵌入できない余分な種子60は除かれ、繰出凹部41a内に嵌入した種子60のみ下方に搬送される。そして、ブラシ部43及びガイド部50を通過すると、種子60の自重により自然落下して、ロート9上に落ち、導管12、ガイドパイプ11を介して圃場面に落下するのである。   In such a configuration, when the feeding roll 41 is rotated in the direction of the arrow by the rotational drive of the feeding drive shaft 42, the seed 60 filled in the hopper 5 is fitted into the feeding recess 41a and rotated in this fitted state. The excess seed 60 that cannot be fitted into the feeding recess 41a is removed by the brush portion 43, and only the seed 60 that is fitted into the feeding recess 41a is conveyed downward. And when it passes the brush part 43 and the guide part 50, it will fall naturally by the dead weight of the seed 60, will fall on the funnel 9, and will fall to the field scene via the conduit | pipe 12 and the guide pipe 11. FIG.

次に、本発明に係る繰出装置7の特徴について詳述する。   Next, the features of the feeding device 7 according to the present invention will be described in detail.

図3に示すように、繰出ロール41の外周部には、繰出凹部41aが一定間隔を置いて複数形成されており(本実施例では4箇所)、繰出ロール41を回転させることで、前記繰出凹部41aが上方の粒状体貯溜空間に臨む位置から下方の粒状体排出空間に向けて回動する際に、該繰出凹部41a内に入り込み貯溜された種子60を下方に搬送して繰り出されるように構成している。   As shown in FIG. 3, a plurality of feeding recesses 41 a are formed at regular intervals on the outer peripheral portion of the feeding roll 41 (four in this embodiment), and the feeding roll 41 is rotated to rotate the feeding roll 41. When the concave portion 41a rotates from the position facing the upper granular material storage space toward the lower granular material discharge space, the seed 60 entering the stored concave portion 41a is conveyed downward and fed out. It is composed.

前記繰出ロール41は略円筒状であり、繰出駆動軸42上に繰出ロール41の軸心部が取り付けられており、繰出ケース40に回転自在に支持され着脱可能としている。またブラシ部43が繰出ケース40に固定されて繰出駆動軸42に対して略水平位置にある繰出ロール41の外周面に当接するように配置されている。種子60を繰出凹部41a内に収めて繰出ロール41下方の落下位置まで安定して搬送するためのガイド機能をもたせるように前記ブラシ部43の下部から前記繰出ロール41最下位置近傍まで覆うガイド部50を配置している。該ガイド部50は、繰出ロール41に摺接している低摩擦層51を備え、その下部には発泡体で構成した中間緩衝層52があり、それらを支持するために剛性を持ったベース部53より構成されている。こうしてホッパー5内の種子60は上部の開放された部分より繰出ロール41の繰出凹部41a内に入り、繰出ロール41が回転することにより、まず擦り切り部44で繰出凹部41a内に入ることができない余分な種子60を除き、続いてブラシ部43で種子60を繰出凹部41a内にきれいに収納するように表面をならして繰出凹部41a内の種子60のみ下方へ搬送されてロート9上に落ち、導管12、ガイドパイプ11を介して圃場面に繰り出される。   The feeding roll 41 has a substantially cylindrical shape, and an axial center portion of the feeding roll 41 is mounted on the feeding drive shaft 42, and is rotatably supported by the feeding case 40 so as to be detachable. Further, the brush portion 43 is fixed to the feeding case 40 and is disposed so as to abut on the outer peripheral surface of the feeding roll 41 that is in a substantially horizontal position with respect to the feeding drive shaft 42. A guide portion that covers from the lower portion of the brush portion 43 to the vicinity of the lowest position of the feeding roll 41 so as to have a guide function for storing the seed 60 in the feeding recess 41a and stably transporting the seed 60 to the dropping position below the feeding roll 41. 50 are arranged. The guide portion 50 includes a low friction layer 51 that is in sliding contact with the feeding roll 41, and an intermediate buffer layer 52 made of a foam is provided at a lower portion thereof, and a base portion 53 having rigidity to support them. It is made up of. In this way, the seed 60 in the hopper 5 enters the feeding recess 41a of the feeding roll 41 from the open part of the upper portion, and when the feeding roll 41 rotates, the surplus portion 44 cannot first enter the feeding recess 41a. The seed 60 is removed by the brush 43 and the surface is leveled so that the seed 60 is housed cleanly in the feeding recess 41a. Only the seed 60 in the feeding recess 41a is conveyed downward and falls onto the funnel 9, 12. It is fed out to the farm scene through the guide pipe 11.

このような構成において、まず、低摩擦層51はガイド部50が常に繰出ロール41と接触することから、繰出ロール41の表面摩耗を防ぐために繰出ロール41の表面に接するガイド部50及びその近傍に設けた滑性のある樹脂等で形成した表面層である。これにより繰出ロール41の表面摩耗を防ぐだけではなく、繰出凹部41a内に種子60が入らずに繰出ロール41と低摩擦層51との間に種子60を噛み込んだ場合においても種子60が抵抗とならずに繰出ロール41が滑らかに回転することができる。本実施例では低摩擦層51の材質として超高分子ポリエチレン(商標名ニューライト等)を用いたが、これに限るものではなく他の滑性のある材質のもの、例えば4フッ化エチレン(テフロン(登録商標))等であっても構わない。   In such a configuration, first, since the guide portion 50 is always in contact with the feeding roll 41, the low friction layer 51 is formed on the guide portion 50 in contact with the surface of the feeding roll 41 and in the vicinity thereof in order to prevent surface wear of the feeding roll 41. It is a surface layer formed of a provided resin having lubricity. This not only prevents the surface wear of the feeding roll 41 but also prevents the seed 60 from resisting even when the seed 60 is bitten between the feeding roll 41 and the low friction layer 51 without the seed 60 entering the feeding recess 41a. The feeding roll 41 can rotate smoothly without becoming. In this embodiment, ultra-high molecular weight polyethylene (trade name: Neurite, etc.) is used as the material of the low friction layer 51. However, the material is not limited to this, and other slippery materials such as tetrafluoroethylene (Teflon) are used. (Registered trademark)) or the like.

また、本発明においては、前記低摩擦層51の下部に中間緩衝層52を設けている。この中間緩衝層52として弾性体の一例である発泡体(スポンジ状のもの)で構成したことで、繰出ロール41とガイド部50との間に余分な隙間を極力発生させずに種子60の搬送を可能としたのである。中間緩衝層52の層の厚さとしては、搬送する粒状体の大きさに応じて考慮すれば良いが、搬送性と緩衝効果を鑑みると好ましくは粒状体の直径と比べ同等もしくは、やや大きい程度、例えば粒状体の大きさの1〜2倍程度の厚さを備えることが好ましい。なお、本実施例では中間緩衝層52の材質としてポリウレタン樹脂の発泡体を使用したが、弾性のあるものであれば、これに限るものではない。また、上記中間緩衝層52を支持するために弾性変形しない剛性を有するベース部53を備えたことで、種子60を噛み込んだ際に不要な隙間を生じないように変形した中間緩衝層52を安定して支持し一定の形状を保持するように土台部分として機能するのものである。なお本実施例では、ベース部53の部材として塩化ビニール樹脂(PVC)を使用したがこれに限るものではなく弾性変形しない剛性を有する材料であれば他の樹脂や金属等であっても構わない。以上の構成により、図11で示すような従来のガイド板55を備えた繰出装置よりも播種のばらつきを抑え、一定量を一定間隔で繰り出すことができるようになったのである。   In the present invention, an intermediate buffer layer 52 is provided below the low friction layer 51. Since the intermediate buffer layer 52 is made of a foam (sponge-like material) which is an example of an elastic body, the seed 60 can be conveyed without generating an excessive gap between the feeding roll 41 and the guide portion 50 as much as possible. Is made possible. The thickness of the intermediate buffer layer 52 may be considered in accordance with the size of the granular material to be transported, but is preferably equal to or slightly larger than the diameter of the granular material in view of transportability and buffering effect. For example, it is preferable to have a thickness of about 1 to 2 times the size of the granular material. In this embodiment, a polyurethane resin foam is used as the material of the intermediate buffer layer 52, but the material is not limited to this as long as it is elastic. In addition, since the base portion 53 having rigidity that does not elastically deform to support the intermediate buffer layer 52 is provided, the intermediate buffer layer 52 deformed so as not to generate an unnecessary gap when the seed 60 is bitten. It functions as a base part so as to stably support and maintain a certain shape. In this embodiment, vinyl chloride resin (PVC) is used as a member of the base portion 53, but the present invention is not limited to this, and any other resin or metal may be used as long as the material has rigidity that does not elastically deform. . With the above configuration, it is possible to suppress seeding variation more than a conventional feeding device provided with a guide plate 55 as shown in FIG. 11, and to feed a constant amount at a constant interval.

すなわち、粒状体である種子60を収容するホッパー5と、該ホッパー5の下部開口近傍に回転可能に設けられると共に外周部に繰出凹部41aを有する繰出ロール41と、該繰出ロール41下方の落下位置まで繰出ロール41の外周を覆うことにより粒状体である種子60が前記繰出凹部41aから落下しないように案内するガイド部50とを設けた繰出装置7において、該ガイド部50を、前記繰出ロール41の外周部に摺接する低摩擦層51と、弾性変形が可能な中間緩衝層52と、繰出時に発生する応力によっても弾性変形しない剛性を有するベース部53と、により構成したことにより繰出ロール41とガイド部50との間に種子60が噛み込んだ際に繰出凹部41aからの種子60の落下を防ぐことができる。そのため従来よりも点播精度が向上し、点播間隔を一定にすることができる。   That is, the hopper 5 that accommodates the seeds 60 that are granular, the feeding roll 41 that is rotatably provided near the lower opening of the hopper 5 and that has the feeding recess 41a on the outer peripheral portion, and the drop position below the feeding roll 41 In the feeding device 7 provided with a guide portion 50 that guides the seed 60, which is a granular material, from falling from the feeding recess 41a by covering the outer periphery of the feeding roll 41 until the guide roll 50 is provided, The feeding roll 41 is constituted by the low friction layer 51 slidably in contact with the outer peripheral portion, the intermediate buffer layer 52 capable of elastic deformation, and the base portion 53 having rigidity that does not elastically deform even when stress is generated during feeding. The seed 60 can be prevented from dropping from the feeding recess 41a when the seed 60 is caught between the guide portion 50 and the guide portion 50. Therefore, the spotting accuracy is improved as compared with the conventional case, and the spotting interval can be made constant.

また、前記ブラシ部43において、前記ブラシ部43の上部に、繰出ロール41の外周部に当接する擦り切り部44を設け、該擦り切り部44を前記繰出ロール41の外周部に対して耐磨耗性のある部材で構成している。   Further, in the brush portion 43, a scraping portion 44 that comes into contact with the outer peripheral portion of the feeding roll 41 is provided on the upper portion of the brush portion 43, and the scraping portion 44 is wear-resistant with respect to the outer peripheral portion of the feeding roll 41. It consists of a member with.

このような構成において、擦り切り効果を上げるため擦り切り部44の先端部が、繰出ロール41に当接している。そのため繰出ロール41の摩耗を防止するために耐磨耗性のある硬質部材で構成している。硬質部材としては、本実施例ではゴム硬度7〜10程度の硬質ゴムを使用したがこれに限るものではなく、繰出ロール41の回転時に巻き込まれない程度の硬度を持つものであれば良い。ある程度の弾性があり摩耗に耐えうる材料であれば硬質ゴム以外であっても構わない。また硬質ゴムとしては天然ゴム、合成ゴム等を使用状況に応じて適宜選択すればよい。例えば、繰出凹部41a内に入り切らない余分な種子60の掻き取りを行うために擦り切り部44を設けずにブラシ部43だけを設けた場合、中間緩衝層52が発泡体等の柔らかい部材で構成されているため、種子60によっては噛み込み等が発生しやすくなる。そのような場合に対応するため、本発明では、ブラシ部43の上部に硬質部材で構成された擦り切り部44を設けるようにしている。以上の構成により、従来のブラシだけを用いた擦り切りよりも繰出ロール41に対する擦り切り性能を更に向上させることができるため、種子60の繰出凹部41aへの充填を効率よく行うことができる。   In such a configuration, the tip of the scraping portion 44 is in contact with the feeding roll 41 in order to increase the scraping effect. Therefore, in order to prevent the feeding roll 41 from being worn, it is composed of a hard member having wear resistance. As the hard member, hard rubber having a rubber hardness of about 7 to 10 is used in the present embodiment, but the hard member is not limited to this, and any hard member may be used as long as it does not get caught when the feeding roll 41 is rotated. A material other than hard rubber may be used as long as it has a certain degree of elasticity and can withstand abrasion. Further, as the hard rubber, natural rubber, synthetic rubber or the like may be appropriately selected according to the use situation. For example, in the case where only the brush portion 43 is provided without the scraping portion 44 in order to scrape off the excess seed 60 that does not fit into the feeding recess 41a, the intermediate buffer layer 52 is made of a soft member such as foam. Therefore, biting or the like is likely to occur depending on the seed 60. In order to deal with such a case, in the present invention, a scraping portion 44 made of a hard member is provided on the upper portion of the brush portion 43. With the above configuration, the scraping performance with respect to the feeding roll 41 can be further improved as compared with the conventional scraping using only a brush, and therefore the filling of the seed 60 into the feeding recess 41a can be performed efficiently.

すなわち、前記ブラシ部43の上部に、繰出ロール41の外周部に当接する擦り切り部44を設け、該擦り切り部44を前記繰出ロール41の外周部に対して耐磨耗性のある部材で構成したことにより、前記中間緩衝層52を設けた場合の粒状体の噛み込みを低減することが可能となる。また従来のブラシだけを用いたものよりも繰出ロール41に対する擦り切り性能を向上させることができるため、粒状体の一例である種子60の繰出凹部41aへの充填を効率よく行うことができる。   That is, at the upper part of the brush portion 43, a scraping portion 44 that comes into contact with the outer peripheral portion of the feeding roll 41 is provided, and the scraping portion 44 is constituted by a member that is wear resistant to the outer peripheral portion of the feeding roll 41. As a result, it is possible to reduce the biting of the granular material when the intermediate buffer layer 52 is provided. Moreover, since the scraping performance with respect to the supply roll 41 can be improved as compared with the case using only the conventional brush, the filling recess 41a of the seed 60, which is an example of the granular material, can be efficiently performed.

次に、繰出ロール41の外周面に設けた繰出凹部41aについて、図3、図4を用いて説明する。本発明においては、図3に示すように繰出凹部41aの相対する断面角部のうち少なくとも一方に、丸み又は面取りを施したものである。本実施例では繰出ロール41の回転時に擦り切り部44と最初に接触する断面角部を鋭角にしており、もう一方の断面角部に丸みを持たせている。   Next, the feeding recess 41a provided on the outer peripheral surface of the feeding roll 41 will be described with reference to FIGS. In the present invention, as shown in FIG. 3, at least one of the opposing cross-sectional corners of the feeding recess 41a is rounded or chamfered. In this embodiment, when the feeding roll 41 is rotated, the corner portion that first contacts the scraping portion 44 is an acute angle, and the other corner portion is rounded.

このような構成において、まず擦り切り部44に最初に接触する断面角部を鋭角にしたことで種子60の擦り切り性能を高めている。また、もう一方の断面角部に丸みを持たせることで、擦り切り部44と断面角部との間に種子60が挟まれることを回避し種子60の割れを防ぐことができる。なお、種子60の搬送を考慮し、断面角部に面取りを施す場合は、繰出ロール41の外周接線より30°以内の傾斜部を持たせることが好ましい。さらに面取り後できた角部についても丸みを持たせることが好ましい。また、断面角部に丸みを持たせる場合、曲率半径Rは繰出凹部の深さより小さいことが好ましい。   In such a configuration, first, the cornering portion that first contacts the chafing portion 44 is made an acute angle, so that the chafing performance of the seed 60 is enhanced. Further, by rounding the other cross-sectional corner, it is possible to prevent the seed 60 from being sandwiched between the scraped portion 44 and the cross-sectional corner, and to prevent the seed 60 from cracking. In consideration of the conveyance of the seed 60, when chamfering the cross-sectional corner portion, it is preferable to have an inclined portion within 30 ° from the outer peripheral tangent of the feeding roll 41. Further, it is preferable to round the corners after chamfering. Moreover, when rounding a cross-sectional corner | angular part, it is preferable that the curvature radius R is smaller than the depth of a feeding recessed part.

すなわち、前記繰出凹部41aの相対する断面角部のうち少なくとも一方に、丸み又は面取りを施したことにより、繰出凹部41aにおいて粒状体の一例である種子60の擦り切りや出入りがスムーズにできる。   That is, by rounding or chamfering at least one of the opposing cross-sectional corners of the feeding recess 41a, the seed 60, which is an example of a granular body, can be scraped off and in and out smoothly in the feeding recess 41a.

また、図4に示すように、本発明では前記繰出凹部41aが、前記繰出ロール41の外周部に等間隔に配置されるとともに、前記繰出凹部41a間の円弧長が繰出凹部41aの円弧長の略2倍以上になるように規制したものである。   As shown in FIG. 4, in the present invention, the feeding recesses 41a are arranged at equal intervals on the outer periphery of the feeding roll 41, and the arc length between the feeding recesses 41a is equal to the arc length of the feeding recess 41a. It is regulated to be approximately twice or more.

このような構成において、図4に示すように繰出凹部41aの円弧長をLa、繰出凹部41a間の円弧長をLbとすると、繰出凹部41a間の円弧長Lbが繰出凹部41aの円弧長Laの2倍より短い場合、期待する点播間隔より短くなりすぎるため、略条播状態になってしまう。また図11に示すような従来の繰出ロール41では繰出凹部41aの間隔が狭いため、種子が噛み込んだ場合に、ガイド板55と繰出ロール41との間に隙間が発生し、種子60がこぼれ落ちる割合が高くなっていた。これらを鑑みて点播間隔を一定にするような精度の良い点播を行うにはLb≧2Laの条件で繰出凹部41aを繰出ロール41の外周面に配置することが好ましいことがわかったのである。   In such a configuration, if the arc length of the feeding recess 41a is La and the arc length between the feeding recesses 41a is Lb as shown in FIG. 4, the arc length Lb between the feeding recesses 41a is equal to the arc length La of the feeding recess 41a. If it is shorter than twice, it becomes too short than the expected spot sowing interval, resulting in an approximately strip sowing state. Further, in the conventional feeding roll 41 as shown in FIG. 11, since the spacing between the feeding recesses 41a is narrow, a gap is generated between the guide plate 55 and the feeding roll 41 when the seed is bitten, and the seed 60 is spilled off. The percentage of In view of these, it has been found that it is preferable to dispose the feeding recess 41a on the outer peripheral surface of the feeding roll 41 under the condition of Lb ≧ 2La in order to perform accurate spotting so as to make the spotting interval constant.

すなわち、前記繰出凹部41aが、前記繰出ロール41の外周部に等間隔に配置されるとともに、前記繰出凹部41a間の円弧長が繰出凹部41aの円弧長の略2倍以上になるように規制したことにより、点播精度が向上し、点播間隔を一定することができるのである。   That is, the feeding recesses 41a are arranged at equal intervals on the outer periphery of the feeding roll 41, and the arc length between the feeding recesses 41a is regulated to be approximately twice or more the arc length of the feeding recess 41a. As a result, the spotting accuracy is improved and the spotting interval can be made constant.

つまり、以上のように構成することによって、繰出駆動軸42の回転駆動により繰出ロール41を矢印方向に回転すると、ホッパー5内に充填された種子60は繰出凹部41a内に嵌入し、この嵌入した状態で回転して、先ずはブラシ部43の上部に固着した擦り切り部44で繰出ロール41の外周面に沿って種子60が擦り切られ、繰出凹部41a内に嵌入できない余分な種子60が除かれる。次にブラシ部43で繰出凹部41a内に嵌入された種子60の表面が慣らされて、より均一に種子60が繰出凹部41a内に収まるようにしている。繰出ロール41の回転による種子60の搬送においても、低摩擦層51を設けたことにより搬送中に種子60が引っかからずにスムーズに流れるように促している。また、弾性変形が可能な中間緩衝層52を設けたことで種子60を搬送する際にガイド部50が繰出ロール41に密着した状態を維持し隙間を埋めるような形状を保つため、種子60が噛み込んでも余計な隙間が発生しないため搬送途中の種子60が繰出凹部41aから落下することが無くなるのである。また繰出凹部41aの形状を上記のように構成することで種子60の噛み込みや割れ等が少なくなり、よりスムーズに繰出凹部41aに種子60が充填されるのである。そうして繰出凹部41a内に嵌入した種子60のみ下方へ搬送される。そして、ガイド部50を通過すると、意図した時期において種子60の自重により自然に落下し、圃場面に繰り出されるのである。このようにして本発明では安定して種子60を搬送することが可能となり播種のばらつきが少なくなり、ほぼ一定量の種子を一定間隔で落下させることにより、播種精度を上げることができたのである。   That is, by configuring as described above, when the feeding roll 41 is rotated in the direction of the arrow by the rotational drive of the feeding drive shaft 42, the seed 60 filled in the hopper 5 is fitted into the feeding recess 41a and is fitted. The seed 60 is first scraped along the outer peripheral surface of the feeding roll 41 by the scraping portion 44 fixed to the upper portion of the brush portion 43, and the excess seed 60 that cannot be fitted into the feeding recess 41a is removed. . Next, the surface of the seed 60 fitted in the feeding recess 41a is acclimatized by the brush portion 43 so that the seed 60 fits in the feeding recess 41a more uniformly. Also in the conveyance of the seed 60 by the rotation of the feeding roll 41, the low friction layer 51 is provided to encourage the seed 60 to flow smoothly without being caught during the conveyance. In addition, by providing the intermediate buffer layer 52 that can be elastically deformed, when the seed 60 is transported, the guide portion 50 maintains a shape that is in close contact with the feeding roll 41 and fills the gap. Even if it is bitten, no extra gap is generated, so that the seed 60 in the middle of conveyance is not dropped from the feeding recess 41a. Further, by configuring the shape of the feeding recess 41a as described above, the seed 60 is less bitten or broken, and the seed 60 is filled more smoothly into the feeding recess 41a. Thus, only the seed 60 fitted in the feeding recess 41a is conveyed downward. And if it passes the guide part 50, it will fall naturally by the dead weight of the seed 60 in the intended time, and will be drawn out to a farm scene. In this way, according to the present invention, the seed 60 can be stably conveyed, so that there is less variation in sowing, and the seeding accuracy can be improved by dropping a substantially constant amount of seeds at regular intervals. .

なお、本実施例においては、繰出凹部41aとして溝状の繰出凹部41aを具備する繰出ロール41の例を示したが、繰出凹部41aの容量が変更できるスライドロール方式の繰出装置に適用することも可能である。   In the present embodiment, the example of the feeding roll 41 having the groove-shaped feeding recess 41a as the feeding recess 41a has been shown, but the present invention can also be applied to a slide roll type feeding device in which the capacity of the feeding recess 41a can be changed. Is possible.

また、本実施例では本発明の繰出装置を牽引型施肥播種機に搭載する例を示したが、その他の手押し型、固定型の播種機等に、あらゆるタイプの播種機、施肥播種機等に搭載することができる。   Further, in this embodiment, an example in which the feeding device of the present invention is mounted on a towing type fertilizer seeder is shown, but other types of seeder, fixed seeder, etc., all types of seeders, fertilizer seeders, etc. Can be installed.

次に、本発明に係る繰出装置の下部に風防部70を設けた例について図5乃至図10を用いて説明する。   Next, the example which provided the windshield part 70 in the lower part of the feeding apparatus which concerns on this invention is demonstrated using FIG. 5 thru | or FIG.

図5は、実施例1と同様の繰出装置7を備えた湛水点播直播機である。図5に示すように湛水点播直播機は、繰出装置7を備え、該繰出装置7の下部には図5、図6及び図8に示すように風防部70が配設されている。風防部70の断面形状は円筒状となっており、圃場面と接触しないように配置されている。また、風防部70の本体表面部分は滑り性及び撥水性の高い4フッ化エチレン(テフロン(登録商標))を用いて構成されている。   FIG. 5 is a direct seeding seeding machine equipped with a feeding device 7 similar to that in the first embodiment. As shown in FIG. 5, the flooded point direct sowing machine includes a feeding device 7, and a windshield portion 70 is disposed below the feeding device 7 as shown in FIGS. 5, 6, and 8. The cross-sectional shape of the windshield portion 70 is a cylindrical shape, and is arranged so as not to contact the farm scene. Further, the surface portion of the main body of the windshield portion 70 is configured using tetrafluoroethylene (Teflon (registered trademark)) having high slipperiness and water repellency.

このように構成することで、風の影響を排除し、また図7に示した繰出ケース40の下部や繰出ロール41の周辺部分及び圃場に落下する種子等を風や水分の付着から防ぐことが可能となる。特に車体前方にある接地輪71の泥の跳ね上げやフロート部72の旋回時の上げ下ろし時の泥はね等を防ぐのに効果的である。また繰出装置7の下部に風防部70を付加したことで、種子60が繰り出される風防部70の下端開口部と圃場面との間隔が縮まり、風の影響範囲が小さくなったことでも点播位置精度が向上したのである。つまり風防部70を配設したことで水分や泥の付着等が抑えられることにより種子60の落下間隔のばらつきを防止できることにより、播種精度を上げることが可能となったのである。なお、本実施例では風防部70は図5、図6に示すような円筒状の形状であるが、図9、図10に示すように風防部70の断面形状がU字状になっている、つまり後端部が一部開放した形状であっても構わない。また風防部70を透明な合成樹脂等で構成し、その表面を滑り性及び撥水性の良い部材で構成することで種子60の落下状況も確認できるようにしても構わない。また、本実施例では風防機能を具備する風防手段の一例を示したが、風防機能を有しているものであれば従来の施肥播種機等で用いられている種子等のガイドパイプである屈曲可能な軟質部材や伸縮自在な蛇腹等で構成されたパイプを風防手段として用いても構わない。上記のような軟質部材や蛇腹で構成されたガイドパイプを風防手段として使用した場合、伸縮自在・屈曲可能であるためパイプ下端の位置調整が自在にできる。これによりガイドパイプ下端部と圃場との間隔も状況に応じて適宜設定することができるため、風防手段としての機能を最大限発揮することが可能となる。また、本実施例では風防部70本体の表面を水分や泥の付着防止効果を向上させるために4フッ化エチレン(テフロン(登録商標))をコーティングして用いているが、その他の滑り性又は撥水性の良い樹脂材料で構成しても構わない。さらに風防部70本体自体を滑り性及び撥水性の良い樹脂材料だけで構成しても構わない。   By comprising in this way, the influence of a wind is excluded and the lower part of the feeding case 40 shown in FIG. 7, the peripheral part of the feeding roll 41, the seeds which fall to a farm field, etc. are prevented from attachment of a wind or a water | moisture content. It becomes possible. In particular, it is effective in preventing mud splashing when the grounding wheel 71 in front of the vehicle body is splashed and when the float 72 is turned up and down when turning. Further, by adding the windshield portion 70 to the lower part of the feeding device 7, the distance between the lower end opening of the windshield portion 70 from which the seed 60 is fed and the field scene is reduced, and the wind-affected range is reduced, so that the spot seeding position accuracy is reduced. Improved. In other words, by providing the windshield portion 70, it is possible to prevent seeds 60 from being dispersed by preventing moisture and mud from adhering, thereby increasing the sowing accuracy. In the present embodiment, the windshield portion 70 has a cylindrical shape as shown in FIGS. 5 and 6, but the cross-sectional shape of the windshield portion 70 is U-shaped as shown in FIGS. 9 and 10. That is, the rear end portion may be partially open. Further, the windshield portion 70 may be made of a transparent synthetic resin or the like, and the surface of the windshield portion 70 may be made of a member having good slipperiness and water repellency so that the falling state of the seed 60 can be confirmed. Further, in this embodiment, an example of a windshield means having a windshield function is shown, but if it has a windshield function, it is a bent pipe that is a guide pipe for seeds and the like used in conventional fertilizer seeding machines. You may use as a windshield means the pipe comprised by the possible soft member, the elastic bellows, etc. As shown in FIG. When a guide pipe composed of a soft member or bellows as described above is used as a windshield means, the position of the lower end of the pipe can be adjusted freely because it is extendable and bendable. Thereby, since the space | interval of a guide pipe lower end part and a farm field can also be set suitably according to a condition, it becomes possible to exhibit the function as a windshield means to the maximum. In this embodiment, the surface of the windshield portion 70 body is coated with tetrafluoroethylene (Teflon (registered trademark)) in order to improve the moisture and mud adhesion prevention effect. You may comprise with a resin material with good water repellency. Furthermore, you may comprise the windshield part 70 main body itself only with a resin material with good slipperiness and water repellency.

すなわち、前記繰出装置7の下部に、風防手段である風防部70を設け、該風防手段の本体または表面を、滑り性及び撥水性の良い部材で構成したことにより、種子への風の影響や泥はねによる種子60等の粒状体の落下間隔のばらつきを防止できる。   That is, by providing a windshield portion 70 which is a windshield means at the lower part of the feeding device 7 and the body or surface of the windshield means is made of a member having good slipperiness and water repellency, It is possible to prevent variation in the interval of dropping of granular materials such as seeds 60 due to mud splashing.

なお、本実施例の風防部70においては、一定間隔で一定量を落下させる種子繰出装置について説明したが、肥料繰出装置や薬剤繰出装置等にも適用できる。また、本実施例ではロール式の繰出装置について説明したが、目皿式やベルト式等の繰出装置の下方に配置することもできるものである。   In addition, in the windshield part 70 of a present Example, although the seed delivery apparatus which drops a fixed quantity at fixed intervals was demonstrated, it is applicable also to a fertilizer delivery apparatus, a chemical | medical agent delivery apparatus, etc. In the present embodiment, the roll-type feeding device has been described. However, the roll-type feeding device can also be arranged below the feeding device such as a pan-type or belt-type feeding device.

本発明に係る繰出装置を搭載した施肥播種機の全体的な構成を示した全体側面図。The whole side view which showed the whole structure of the fertilizer seeding machine equipped with the feeding apparatus which concerns on this invention. 本発明に係る繰出装置を示した側面一部図。The partial side view which showed the feeding apparatus which concerns on this invention. 同じく断面側面図。Similarly sectional side view. 本発明に係る繰出ロールの断面側面図。The cross-sectional side view of the supply roll which concerns on this invention. 本発明に係る風防部を備えた湛水点播直播機の右斜め背面からの斜視図。The perspective view from the diagonally right back of the flooded point direct sowing machine provided with the windshield according to the present invention. 同じく背面からの斜視図。The perspective view from the back similarly. 湛水点播直播機の繰出装置下部からみた斜視図。The perspective view seen from the feeding apparatus lower part of the flooded point direct seeding machine. 本発明に係る風防部を備えた繰出装置の断面側面図。The cross-sectional side view of the feeding apparatus provided with the windshield part which concerns on this invention. 後端部が開放された風防部を備えた繰出装置の断面側面図。The cross-sectional side view of the feeding apparatus provided with the windshield part by which the rear-end part was open | released. 後端部が開放された風防部の斜視図。The perspective view of the windshield part by which the rear-end part was open | released. 従来の繰出装置の断面側面図。Sectional side view of the conventional feeding apparatus.

4・5 ホッパー
6・7 繰出装置
41 繰出ロール
41a繰出凹部
42 繰出駆動軸
43 ブラシ部
44 擦り切り部
50 ガイド部
51 低摩擦層
52 中間緩衝層
53 ベース部
60 種子
70 風防部
4 · 5 hopper 6 · 7 feeding device 41 feeding roll 41a feeding recess 42 feeding drive shaft 43 brush portion 44 scraping portion 50 guide portion 51 low friction layer 52 intermediate buffer layer 53 base portion 60 seed 70 windshield portion

Claims (4)

粒状体を収容するホッパーと、該ホッパーの下部開口近傍に回転可能に設けられると共に外周部に繰出凹部を有する繰出ロールと、該繰出ロール下方の落下位置まで繰出ロールの外周を覆うことにより粒状体が前記繰出凹部から落下しないように案内するガイド部とを設けた繰出装置において、該ガイド部を、前記繰出ロールの外周部に摺接する低摩擦層と、弾性変形が可能な中間緩衝層と、繰出時に発生する応力によっても弾性変形しない剛性を有するベース部とにより構成し、前記ホッパーの下部開口近傍から前記ガイド部の間にブラシ部を設け、該ブラシ部の先端を前記繰出ロールの外周部に摺接させ、前記ブラシ部の上部に、繰出ロールの外周部に当接する擦り切り部を設け、該擦り切り部を前記繰出ロールの外周部に対して耐摩耗性のある部材で構成したことを特徴とする繰出装置。 A hopper that accommodates the granular material, a feeding roll that is rotatably provided in the vicinity of the lower opening of the hopper and has a feeding recess on the outer peripheral portion, and the granular material by covering the outer periphery of the feeding roll to the drop position below the feeding roll In the feeding device provided with a guide part that guides so as not to fall from the feeding recess, the guide part is slidably in contact with the outer peripheral part of the feeding roll, an intermediate buffer layer capable of elastic deformation, A base portion having rigidity that does not elastically deform even when stress is generated during feeding , a brush portion is provided between the guide portion from the vicinity of the lower opening of the hopper, and the tip of the brush portion is an outer peripheral portion of the feeding roll The brush portion is provided with a scraping portion that contacts the outer peripheral portion of the feeding roll, and the scraping portion is wear-resistant against the outer peripheral portion of the feeding roll. Feeding device characterized in that is constituted by members with. 請求項1記載の繰出装置において、前記繰出凹部が、前記繰出ロールの外周部に等間隔に配置されるとともに、前記繰出凹部間の円弧長が繰出凹部の円弧長の略2倍以上になるように設けたことを特徴とする繰出装置。 2. The feeding device according to claim 1, wherein the feeding recesses are arranged at equal intervals on an outer peripheral portion of the feeding roll, and an arc length between the feeding recesses is approximately twice or more than an arc length of the feeding recess. A feeding device characterized by being provided in the above. 請求項1又は請求項2記載の繰出装置において、前記繰出凹部の相対する断面角部のうち少なくとも一方に、丸み又は面取りを施したことを特徴とする繰出装置。 3. The feeding device according to claim 1, wherein at least one of the opposing cross-sectional corners of the feeding recess is rounded or chamfered. 請求項1乃至請求項3の何れか一項に記載の繰出装置において、前記繰出装置の下部に、風防手段を設け、該風防手段の本体または表面を、滑り性及び撥水性の良い部材で構成したことを特徴とする繰出装置。 The feeding device according to any one of claims 1 to 3, wherein a windshield means is provided at a lower portion of the feeding device, and a main body or a surface of the windshield means is configured by a member having good slipperiness and water repellency. A feeding device characterized by the above.
JP2006024832A 2006-02-01 2006-02-01 Feeding device Active JP4809686B2 (en)

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