JP2009153407A - Grain discharging auger of combine harvester - Google Patents

Grain discharging auger of combine harvester Download PDF

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Publication number
JP2009153407A
JP2009153407A JP2007332482A JP2007332482A JP2009153407A JP 2009153407 A JP2009153407 A JP 2009153407A JP 2007332482 A JP2007332482 A JP 2007332482A JP 2007332482 A JP2007332482 A JP 2007332482A JP 2009153407 A JP2009153407 A JP 2009153407A
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Prior art keywords
screw
case
blade
drive shaft
conveyance
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Japanese (ja)
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Yukikazu Tanaka
如一 田中
Atsushi Fujimoto
淳 藤本
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Kubota Corp
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Kubota Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a grain discharging auger of a combine harvester capable of shortening the length of the auger with a small power and preventing the damage of the grains. <P>SOLUTION: The grain discharging auger 9 of the combine harvester has a second screw blade 53 entering into the space between the adjacent first screw blades 43 while rotating relative to the first screw, and the second screw 50 moves toward the first screw 40 while keeping the state to superpose with the first screw 40. The tip end 53A of the second screw blade 53 at the side of the first screw 40 is formed to gradually narrow the blade width W of the second screw blade 53 toward the first screw 40. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、伸縮機構を備えて、供給口から排出口に向かって穀粒を搬送可能で、かつ、伸縮可能に構成してあるコンバインの穀粒排出オーガに関する。   The present invention relates to a combine grain discharge auger provided with an expansion / contraction mechanism, capable of conveying a grain from a supply port toward a discharge port, and configured to be expandable / contractible.

従来の技術としては、例えば特許文献１に開示されているように、モーター（特許文献１の図３の２９）を正逆回転させると、回転軸（特許文献１の図３の２６）を介して移動スパイラ（特許文献１の図２の２１）が正逆回転し、搬送スパイラ（特許文献１の図２の２０）の羽根（特許文献１の図２の２０ｂ）に沿って移動スパイラが回転しながら移動することで、摺動筒（特許文献１の図２の１２）を固定側筒（特許文献１の図２の１１）に対して伸縮できるように構成されたコンバインの排出オーガが知られている。   As a conventional technique, for example, as disclosed in Patent Document 1, when a motor (29 in FIG. 3 in Patent Document 1) is rotated forward and backward, the rotation shaft (26 in FIG. 3 in Patent Document 1) is rotated. Then, the moving spira (21 in FIG. 2 of Patent Document 1) rotates forward and backward, and the moving spira rotates along the blades (20b in FIG. 2 of Patent Document 1) of the conveying spira (20 in FIG. 2 of Patent Document 1). A combined discharge auger configured so that the sliding cylinder (12 in FIG. 2 of Patent Document 1) can be expanded and contracted with respect to the stationary cylinder (11 in FIG. 2 of Patent Document 1) by moving while moving is known. It has been.

特開平９−５６２４８号公報（図２、図３、及び段落番号「００１４」参照）Japanese Patent Laid-Open No. 9-56248 (refer to FIG. 2, FIG. 3, and paragraph number “0014”)

特許文献１のコンバインの排出オーガでは、モーターを逆回転させると、搬送スパイラの羽根に移動スパイラが摺接して、移動スパイラが回転しながら搬送スパイラ側に移動し、摺動筒が固定側筒側に移動するように構成されている。移動スパイラが回転しながら搬送スパイラ側に移動する場合において、例えば移動スパイラが入り込む固定側筒の内部に搬送途中の籾が存在すると、移動スパイラの羽根の先端部が籾の中を回転しながら入り込むこととなる。そのため、特許文献１のコンバインの排出オーガのような移動スパイラの羽根の先端部の形状であると、移動スパイラの羽根の先端部が籾の中を回転しながら入り込む際の抵抗になり易く、移動スパイラが搬送スパイラ側に入り込み難くかった。その結果、移動スパイラを回転駆動する動力が大きくなるといった問題や、移動スパイラの羽根の先端部によって籾が損傷し易いといった問題があった。
本発明は、小さな動力で無理なく短縮することができ、穀粒の損傷を防止できるコンバインの穀粒排出オーガを実現することを目的とする。 In the combine discharge auger of Patent Document 1, when the motor is rotated in the reverse direction, the moving spiral is brought into sliding contact with the blades of the conveying spiraler, and the moving spiral is moved toward the conveying spiraler while rotating. Configured to move to. When the moving spira moves to the transporting spiraler side while rotating, for example, if there is a trap in the middle of the fixed side tube where the moving spiraler enters, the tip of the blade of the moving spiraler enters while rotating in the trap. It will be. Therefore, if it is the shape of the tip of the blade of the moving spira like the discharge auger of the patent document 1, the tip of the blade of the moving spira tends to become resistance when entering while rotating in the cage, It was difficult for the spailer to enter the conveyor spira. As a result, there has been a problem that the power for rotationally driving the moving spiral is large, and a problem that the heel is easily damaged by the tip of the blade of the moving spiral.
An object of this invention is to implement | achieve the grain discharge auger of the combine which can be shortened reasonably with small power and can prevent damage to a grain.

［Ｉ］
（構成）
本発明の第１特徴は、コンバインの穀粒排出オーガを次のように構成することにある。
円筒状の第１ケースと、前記第１ケースに対してスライド移動可能に構成した円筒状の第２ケースと、前記第１ケースと前記第２ケースとに亘って設けられた伸縮機構とを備え、前記第１及び第２ケースの内部に、直列に接続された第１及び第２スクリュを備えて、前記第１スクリュの第１スクリュ羽根の巻き方向と前記第２スクリュの第２スクリュ羽根の巻き方向とを同じ巻き方向に設定し、前記第１ケースの搬送上流側の端部に位置する供給口から前記第２ケースの搬送下流側の端部に位置する排出口に向かって穀粒を搬送可能で、かつ、伸縮可能に構成してあるコンバインの穀粒排出オーガにおいて、前記伸縮機構により前記第１及び第２ケースを短縮させると、前記第２スクリュ羽根が互いに隣接する前記第１スクリュ羽根の間を相対回転しながら入り込んで、前記第２スクリュが前記第１スクリュと重なり合いながら前記第１スクリュ側に移動するように構成すると共に、前記第２スクリュ羽根の前記第１スクリュ側の先端部を、前記第２スクリュ羽根の羽根幅が前記第１スクリュ側に向かって徐々に狭くなる形状に構成してある。 [I]
(Constitution)
The first feature of the present invention is that the combine grain discharging auger is configured as follows.
A cylindrical first case; a cylindrical second case configured to be slidable with respect to the first case; and an expansion / contraction mechanism provided across the first case and the second case. In the first and second cases, first and second screws connected in series are provided, and the winding direction of the first screw blade of the first screw and the second screw blade of the second screw are provided. The winding direction is set to the same winding direction, and the grain is directed from the supply port located at the transport upstream end of the first case toward the discharge port located at the transport downstream end of the second case. In a combine grain discharge auger configured to be transportable and extendable, when the first and second cases are shortened by the expansion / contraction mechanism, the second screw blades are adjacent to each other. Phase between the feathers The second screw is configured to move while rotating so that the second screw moves toward the first screw while overlapping the first screw, and the tip end portion of the second screw blade on the first screw side The blade width of the two screw blades is configured to gradually narrow toward the first screw side.

（作用）
本発明の第１特徴によると、伸縮機構により第１及び第２ケースを短縮させると、第２スクリュ羽根が第１及び第２ケースの内部に存在する搬送途中の穀粒の間に徐々に入り込む。これにより、第２スクリュの第２スクリュ羽根の先端部が搬送途中の穀粒の中を回転しながら入り込む際の抵抗になり難くなって、第２スクリュ羽根が第１スクリュ側に入り込み易くなる。その結果、伸縮機構により第１及び第２ケースを短縮させる動力を小さくすることができ、穀粒排出オーガを短縮させる際に穀粒が損傷し難くなる。 (Function)
According to the first feature of the present invention, when the first and second cases are shortened by the expansion / contraction mechanism, the second screw blade gradually enters between the grains in the middle of conveyance existing inside the first and second cases. . As a result, the tip of the second screw blade of the second screw is unlikely to become resistance when entering while rotating in the grain in the middle of conveyance, and the second screw blade easily enters the first screw side. As a result, the power for shortening the first and second cases can be reduced by the expansion / contraction mechanism, and the grains are hardly damaged when the grain discharge auger is shortened.

（発明の効果）
本発明の第１特徴によると、穀粒排出オーガを小さな動力で無理なく短縮させることができ、穀粒排出オーガを短縮させる際における穀粒の損傷を防止できる。 (The invention's effect)
According to the 1st characteristic of this invention, a grain discharge auger can be shortened reasonably with small power, and damage to the grain at the time of shortening a grain discharge auger can be prevented.

［ＩＩ］
（構成）
本発明の第２特徴は、本発明の第１特徴のコンバインの穀粒排出オーガにおいて、次のように構成することにある。
前記第２スクリュ羽根の前記第１スクリュ側の先端部における外周端の形状を、滑らかに湾曲した形状に構成してある。 [II]
(Constitution)
The second feature of the present invention is that the combine grain discharge auger of the first feature of the present invention is configured as follows.
The shape of the outer peripheral end at the tip of the second screw blade on the first screw side is configured to be smoothly curved.

（作用）
本発明の第２特徴によると、本発明の第１特徴と同様に前項［Ｉ］に記載の「作用」を備えており、これに加えて以下のような「作用」を備えている。
本発明の第２特徴によると、例えば第２スクリュ羽根の第１スクリュ側の先端部における外周端の形状を角部を有する形状に構成した場合のように、第２スクリュ羽根の先端部の角部が搬送途中の穀粒に引っ掛かることを防止できる。その結果、第２スクリュの第２スクリュ羽根の先端部が搬送途中の穀粒の中を回転しながら入り込む際の抵抗を更に低減でき、第２スクリュ羽根が第１スクリュ側に更に入り込み易くなる。その結果、伸縮機構により第１及び第２ケースを短縮させる動力を更に小さくすることができ、穀粒排出オーガを短縮させる際に穀粒が更に損傷し難くなる。 (Function)
According to the second feature of the present invention, the “action” described in the preceding item [I] is provided in the same manner as the first feature of the present invention, and in addition to this, the following “action” is provided.
According to the second feature of the present invention, for example, when the shape of the outer peripheral end of the tip end of the second screw blade on the first screw side is configured to have a corner portion, the corner of the tip portion of the second screw blade is formed. It is possible to prevent the portion from being caught by the grain being conveyed. As a result, it is possible to further reduce the resistance when the tip of the second screw blade of the second screw enters while rotating in the grain in the middle of conveyance, and the second screw blade is more likely to enter the first screw side. As a result, the power for shortening the first and second cases by the expansion / contraction mechanism can be further reduced, and the grains are more difficult to be damaged when the grain discharge auger is shortened.

（発明の効果）
本発明の第２特徴によると、本発明の第１特徴と同様に前項［Ｉ］に記載の「発明の効果」を備えており、これに加えて以下のような「発明の効果」を備えている。
本発明の第２特徴によると、穀粒排出オーガを更に小さな動力で無理なく短縮させることができ、穀粒排出オーガを短縮させる際における穀粒の損傷を更に防止できる。 (The invention's effect)
According to the second feature of the present invention, the “effect of the invention” described in the preceding item [I] is provided in the same manner as the first feature of the present invention. In addition, the following “effect of the invention” is provided. ing.
According to the 2nd characteristic of this invention, a grain discharge auger can be shortened reasonably with further small power, and damage to the grain at the time of shortening a grain discharge auger can further be prevented.

［コンバインの全体構成］
図１及び図２に基づいて本発明に係る横オーガ９（穀粒排出オーガに相当）を備えた自脱型コンバインの全体構成について説明する。図１は、自脱型コンバインの全体側面図であり、図２は、自脱型コンバインの全体平面図である。 [Overall configuration of combine]
Based on FIG.1 and FIG.2, the whole structure of the self-desorption type combine provided with the horizontal auger 9 (equivalent to a grain discharge auger) which concerns on this invention is demonstrated. FIG. 1 is an overall side view of a self-removing combine, and FIG. 2 is an overall plan view of the self-removing combine.

図１及び図２に示すように、クローラ走行装置１の上部に設けた走行機体２の前部に刈取部３が設けられ、走行機体２に、操縦部４、刈取穀稈を脱穀及び選別する脱穀部５、脱穀部５から供給される穀粒を貯留するグレンタンク６、このグレンタンク６から機外に穀粒を排出するアンローダ７等を備えて自脱型コンバインが構成されている。   As shown in FIG.1 and FIG.2, the cutting part 3 is provided in the front part of the traveling body 2 provided in the upper part of the crawler traveling apparatus 1, and the steering part 4 and the harvested cereal meal are threshed and selected in the traveling body 2. The self-decomposing combine is configured by including a threshing unit 5, a Glen tank 6 that stores the grain supplied from the threshing unit 5, an unloader 7 that discharges the grain out of the machine from the Glen tank 6, and the like.

アンローダ７は、グレンタンク６下部の排出スクリュ１１から上方に穀粒を導く縦オーガ８と、この縦オーガ８の上部から穀粒をトラックの荷台等（図示せず）に排出する横オーガ９等によって構成されており、縦オーガ８と横オーガ９とに亘って設けた油圧シリンダ１２を操作することでアンローダ７を起立させた状態で、縦オーガ８下方のロアケース１４に設けた旋回モータ１３を回転させることによってアンローダ７を旋回させることができるように構成されている。   The unloader 7 includes a vertical auger 8 that guides the grains upward from the discharge screw 11 at the lower part of the grain tank 6, and a horizontal auger 9 that discharges the grains from the upper part of the vertical auger 8 to a truck bed (not shown). The swivel motor 13 provided in the lower case 14 below the vertical auger 8 in a state where the unloader 7 is erected by operating the hydraulic cylinder 12 provided between the vertical auger 8 and the horizontal auger 9. The unloader 7 can be turned by rotating.

縦オーガ８は、グレンタンク６下部の排出スクリュ１１の後端部に連結されたロアケース１４と、ロアケース１４から上方に延出された外装ケース１５と、この外装ケース１５の内部に回動自在に支持された縦送りスクリュ１６等を備えて構成されており、グレンタンク６下部の排出スクリュ１１から機体後方に搬送された穀粒を上方に搬送して横オーガ９に供給できるように構成されている。   The vertical auger 8 is rotatably connected to the lower case 14 connected to the rear end portion of the discharge screw 11 below the Glen tank 6, an outer case 15 extending upward from the lower case 14, and the outer case 15. It is configured to include a supported vertical feed screw 16 and the like, and is configured to be able to convey the grain conveyed rearward from the discharge screw 11 below the Glen tank 6 and supply it to the horizontal auger 9. Yes.

グレンタンク６下部の排出スクリュ１１は、ロアケース１４の内部でベベル伝達機構１７を介して縦オーガ８の縦送りスクリュ１６と連動連結されており、縦オーガ８の縦送りスクリュ１６は、アッパケース１８の内部でベベル伝達機構１９を介して後述する横オーガ９の第１駆動軸４１と連動連結されている。このように構成することにより、エンジン（図示せず）からの動力により、グレンタンク６と脱穀部５との間に位置する伝動ケース（図示せず）を介してグレンタンク６下部の排出スクリュ１１が回動すると、ベベル伝達機構１７を介して縦送りスクリュ１６が回動し、さらに、ベベル伝達機構１９を介して第１及び第２搬送スクリュ２０，２１が回動するように構成されている。   The discharge screw 11 at the lower part of the Glen tank 6 is connected to the vertical feed screw 16 of the vertical auger 8 via the bevel transmission mechanism 17 inside the lower case 14, and the vertical feed screw 16 of the vertical auger 8 is connected to the upper case 18. Is coupled to a first drive shaft 41 of a lateral auger 9 described later via a bevel transmission mechanism 19. By comprising in this way, the discharge screw 11 of the lower part of the Glen tank 6 via the transmission case (not shown) located between the Glen tank 6 and the threshing part 5 with the motive power from an engine (not shown). Is rotated, the longitudinal feed screw 16 is rotated via the bevel transmission mechanism 17, and the first and second conveying screws 20, 21 are further rotated via the bevel transmission mechanism 19. .

上記にように構成することで、グレンタンク６に貯留した穀粒を排出スクリュ１１によって機体後方に搬送し、縦オーガ８によって上方に搬送して、横オーガ９の供給口９ａに供給し、横オーガ９の内部に設けた第１及び第２搬送スクリュ２０，２１によって穀粒を横オーガ９先端の排出口９ｂに導いて、この排出口９ｂからトラックの荷台等（図示せず）に穀粒を排出することができるようにアンローダ７が構成されている。   By configuring as described above, the grain stored in the Glen tank 6 is conveyed to the rear of the machine body by the discharge screw 11, conveyed upward by the vertical auger 8, and supplied to the supply port 9 a of the horizontal auger 9. The grain is guided to the discharge port 9b at the tip of the horizontal auger 9 by the first and second conveying screws 20 and 21 provided inside the auger 9, and the grain is transferred from the discharge port 9b to a truck bed (not shown). The unloader 7 is configured so as to be discharged.

［横オーガ（穀粒排出オーガに相当）の詳細構造］
図３〜図１２に基づいて横オーガ９（穀粒排出オーガに相当）の詳細構造について説明する。図３は、横オーガ９の全体構造を示す縦断面図であり、図３（ａ）は、最も伸長した状態における横オーガ９の穀粒の搬送方向での縦断面図であり、図３（ｂ）は、最も短縮した状態における横オーガ９の穀粒の搬送方向での縦断面図である。図４〜図６は、図３（ａ）の状態でのＡ〜Ｃの位置における横オーガ９の詳細縦断面図であり、図７及び図８は、図３（ｂ）の状態でのＤ及びＥの位置における横オーガ９の詳細縦断面図である。図９は、図８のＩＸ―ＩＸの位置での断面図である。 [Detailed structure of horizontal auger (equivalent to grain discharge auger)]
The detailed structure of the horizontal auger 9 (corresponding to a grain discharge auger) will be described with reference to FIGS. FIG. 3 is a longitudinal sectional view showing the entire structure of the horizontal auger 9, and FIG. 3 (a) is a longitudinal sectional view in the grain conveying direction of the lateral auger 9 in the most extended state. b) is a longitudinal sectional view in the conveying direction of the grain of the horizontal auger 9 in the most shortened state. 4 to 6 are detailed longitudinal sectional views of the horizontal auger 9 at the positions A to C in the state of FIG. 3A, and FIGS. 7 and 8 are views of D in the state of FIG. 4 is a detailed longitudinal sectional view of the horizontal auger 9 at positions E and E. FIG. FIG. 9 is a cross-sectional view taken along the line IX-IX in FIG.

図１０は、第２スクリュ羽根５３の先端部の詳細図であり、図１０（ａ）は、第２スクリュ羽根５３の先端部の側面図であり、図１０（ｂ）は、第２スクリュ羽根５３の先端部を搬送上流側から見た縦断面図である。図１１は、案内部材４５付近の構造を示す穀粒の搬送方向での縦断面図である。図１２は、案内部材４５付近の構造を示す詳細図であり、図１２（ａ）は、穀粒の搬送方向に直交する方向での縦断面図であり、図１２（ｂ）は、穀粒の搬送方向での横断面図である。なお、図１１は、横オーガ９を伸長させた図３（ａ）の状態での第１スクリュ４０と第２スクリュ５０との連結部である。   10 is a detailed view of the tip of the second screw blade 53, FIG. 10 (a) is a side view of the tip of the second screw blade 53, and FIG. 10 (b) is the second screw blade. It is the longitudinal cross-sectional view which looked at the front-end | tip part of 53 from the conveyance upstream. FIG. 11 is a longitudinal sectional view in the grain conveyance direction showing the structure in the vicinity of the guide member 45. FIG. 12 is a detailed view showing the structure in the vicinity of the guide member 45, FIG. 12 (a) is a longitudinal sectional view in a direction orthogonal to the grain conveying direction, and FIG. 12 (b) is a grain. It is a cross-sectional view in the conveyance direction. FIG. 11 shows a connecting portion between the first screw 40 and the second screw 50 in the state shown in FIG.

図３に示すように、横オーガ９は、縦オーガ８と横オーガ９の連結部に位置するアッパケース１８に連結された円筒状の第１ケース２３と、この第１ケース２３に伸縮方向にスライド自在に内嵌された円筒状の第２ケース２４と、第１及び第２ケース２３，２４の内部に設けられた第１及び第２搬送スクリュ２０，２１等を備えて構成されている。   As shown in FIG. 3, the horizontal auger 9 includes a cylindrical first case 23 connected to an upper case 18 positioned at a connecting portion between the vertical auger 8 and the horizontal auger 9, and the first case 23 in a telescopic direction. A cylindrical second case 24 fitted in a slidable manner, first and second transfer screws 20 and 21 provided inside the first and second cases 23 and 24, and the like are provided.

図５に示すように、第２ケース２４の搬送上流側の端部の外周部には、円筒状のスリーブ２５が第２ケース２４に外嵌された状態で固着されており、このスリーブ２５の搬送上流側の端部にパイプ２６が内嵌された状態で固着され、このパイプ２６の搬送上流側の端部に円筒状のスリーブ２７が外嵌された状態で固着されている。なお、スリーブ２７の搬送上流側の端部における内面側にはテーパ加工が施されており、第１ケース２３に対して第２ケース２４がスライドする際に第１ケース２３から第２ケース２４に無理なく穀粒を導けるように構成されている。スリーブ２５，２７は、その外周部に設けた樹脂製のカラー２８，２９を介して第１ケース２３に内嵌されており、第２ケース２４が第１ケース２３に対して伸縮方向に無理なくスライドするように構成されている。   As shown in FIG. 5, a cylindrical sleeve 25 is fixed to the outer peripheral portion of the upstream end portion of the second case 24 in a state of being fitted on the second case 24. The pipe 26 is fixed to the end portion on the upstream side of the conveyance with the pipe 26 fitted therein, and the cylindrical sleeve 27 is fixed to the end portion on the upstream side of the conveyance of the pipe 26 with the pipe 26 being fitted. The sleeve 27 is tapered on the inner surface side at the upstream end of the conveyance, so that when the second case 24 slides relative to the first case 23, the first case 23 changes to the second case 24. It is configured to be able to guide the grain without difficulty. The sleeves 25 and 27 are fitted into the first case 23 via resin collars 28 and 29 provided on the outer peripheral portions thereof, so that the second case 24 can be easily extended and contracted with respect to the first case 23. It is configured to slide.

図５及び図９に示すように、第１ケース２３の搬送下流側端部の下側には、一対のブラケット３０が固定されており、この一対のブラケット３０のそれぞれにローラー３１が回動自在に支持されている。ローラー３１の外周部は第２ケース２４の外周面の形状に合わせた湾曲させた形状に成形されており、第２ケース２４を第１ケース２３に内嵌した状態でローラー３１の外周面に第２ケース２４の外周面が隙間なく接当して、左右のローラー３１によって第２ケース２４を安定して支持でき、かつ第２ケース２４が第１ケース２３に対してスライド移動するとローラー３１が回転して無理なく伸縮できるように構成されている。   As shown in FIG. 5 and FIG. 9, a pair of brackets 30 are fixed to the lower side of the conveyance downstream end of the first case 23, and the roller 31 is freely rotatable on each of the pair of brackets 30. It is supported by. The outer peripheral portion of the roller 31 is formed into a curved shape that matches the shape of the outer peripheral surface of the second case 24, and the second case 24 is fitted on the first case 23 and the second outer surface of the roller 31 is placed on the outer peripheral surface. The outer peripheral surface of the two cases 24 are in contact with each other without gaps, and the second case 24 can be stably supported by the left and right rollers 31, and the rollers 31 rotate when the second case 24 slides relative to the first case 23. And it is configured so that it can be expanded and contracted without difficulty.

第２ケース２４の上端部には、全長に亘って複数のラック溝３２ａが加工されたラック３２が固着されており、後述する電動モータ３５に連結されたピニオンギア３７と連係されている。   A rack 32 in which a plurality of rack grooves 32a are processed over the entire length is fixed to the upper end portion of the second case 24, and is linked to a pinion gear 37 connected to an electric motor 35 described later.

次に、図４及び図５に基づいて第１搬送スクリュ２０の詳細構造について説明する。図４及び図５に示すように、第１搬送スクリュ２０は、第１ケース２３の搬送上流側に位置する第１スクリュ４０と、この第１スクリュ４０の搬送下流側に位置する第２スクリュ５０とを備えて構成されている。   Next, the detailed structure of the 1st conveyance screw 20 is demonstrated based on FIG.4 and FIG.5. As shown in FIGS. 4 and 5, the first transport screw 20 includes a first screw 40 positioned on the transport upstream side of the first case 23 and a second screw 50 positioned on the transport downstream side of the first screw 40. And is configured.

図４に示すように、第１搬送スクリュ２０を構成する第１スクリュ４０は、第１駆動軸４１と、この第１駆動軸４１の外周部から所定の隙間を開けて設けた第１駆動軸４１と同心状の第１筒軸４２と、この第１筒軸４２の外周部に略全長に亘って固着された螺旋状の第１スクリュ羽根４３とを備えて構成されている。   As shown in FIG. 4, the first screw 40 constituting the first conveying screw 20 includes a first drive shaft 41 and a first drive shaft provided with a predetermined gap from the outer periphery of the first drive shaft 41. 41, a first cylindrical shaft 42 concentric with the first cylindrical shaft 42, and a helical first screw blade 43 fixed to the outer peripheral portion of the first cylindrical shaft 42 over substantially the entire length.

第１駆動軸４１は、円柱状に形成されており、その搬送下流側の端部に連結穴４１ａが形成されており、この連結穴４１ａに第２スクリュ５０の第２駆動軸５１の搬送上流側の端部が内嵌挿入されてピン４７により固定されている。アッパケース１８には、ボス部１８ａが一体成形されており、このボス部１８ａに、ベベル伝達機構１９のベベルギア１９ａがベアリング４６を介して回動自在にされている。第１駆動軸４１の搬送上流側の端部は、ベベルギア１９ａに内嵌挿入されて固定されており、これにより、縦オーガ８の縦送りスクリュ１６からの動力が、ベベル伝達機構１９を介して第１駆動軸４１に伝達される。   The first drive shaft 41 is formed in a columnar shape, and a connection hole 41a is formed at an end portion on the downstream side of the conveyance, and the conveyance screw upstream of the second drive shaft 51 of the second screw 50 is formed in the connection hole 41a. The end on the side is inserted and fixed by a pin 47. A boss portion 18 a is integrally formed in the upper case 18, and a bevel gear 19 a of a bevel transmission mechanism 19 is rotatable on the boss portion 18 a via a bearing 46. The end of the first drive shaft 41 on the upstream side of the conveyance is fixed by being fitted into the bevel gear 19 a, whereby the power from the vertical feed screw 16 of the vertical auger 8 is transmitted via the bevel transmission mechanism 19. It is transmitted to the first drive shaft 41.

第１筒軸４２の搬送上流側の端部には、連結部４２ａが形成されており、この連結部４２ａがアッパケース１８のボス部１８ａに外嵌されると共に、連結ボルト４４によって第１駆動軸４１と一体回動可能に連結されている。これにより、縦オーガ８の縦送りスクリュ１６からの動力により、ベベル伝達機構１９を介して第１駆動軸４１が回転駆動すると、第１筒軸４２が第１駆動軸４１と一体回転するように構成されている。   A connecting portion 42 a is formed at the end of the first cylinder shaft 42 on the upstream side of the conveyance. The connecting portion 42 a is fitted on the boss portion 18 a of the upper case 18 and is connected to the first drive by the connecting bolt 44. It is connected to the shaft 41 so as to be rotatable together. Thus, when the first drive shaft 41 is rotationally driven via the bevel transmission mechanism 19 by the power from the vertical feed screw 16 of the vertical auger 8, the first cylindrical shaft 42 rotates integrally with the first drive shaft 41. It is configured.

図４及び図５に示すように、第１搬送スクリュ２０を構成する第２スクリュ５０は、第２ケース２４の搬送上流側の端部に第２駆動軸５１に対して相対回転自在に支持された第２筒軸５２と、この第２筒軸５２の外周部に第２筒軸５２の略全長に亘って設けられた螺旋状の第２スクリュ羽根５３とを備えて構成されている。   As shown in FIGS. 4 and 5, the second screw 50 constituting the first transport screw 20 is supported at the end of the second case 24 on the transport upstream side so as to be rotatable relative to the second drive shaft 51. The second cylindrical shaft 52 and a spiral second screw blade 53 provided on the outer peripheral portion of the second cylindrical shaft 52 over substantially the entire length of the second cylindrical shaft 52 are configured.

第２筒軸５２は、搬送上流側に位置する筒状部材５２ａと、この筒状部材５２ａの搬送下流側に位置し筒状部材５２ａより小径の第１パイプ５２ｂと、この第１パイプ５２ｂの搬送下流側に位置し第１パイプ５２ｂよりやや外径の大きい第２パイプ５２ｃとを備えて構成されており、外径の大きい第２パイプ５２ｃの部分に第２スクリュ羽根５３の搬送下流側の端部が固着されており、外径の小さい筒状部材５２ａ及び第１パイプ５２ｂの部分に位置する第２スクリュ羽根５３は、筒状部材５２ａ及び第１パイプ５２ｂと所定の隙間を開けて巻き付けられている。   The second cylindrical shaft 52 includes a cylindrical member 52a located on the upstream side of the conveyance, a first pipe 52b having a smaller diameter than the cylindrical member 52a, located on the conveyance downstream side of the cylindrical member 52a, and the first pipe 52b. The second pipe 52c is located on the downstream side of the conveyance and has a slightly larger outer diameter than the first pipe 52b. The second pipe 52c having a larger outer diameter is provided on the downstream side of the conveyance of the second screw blade 53. The end of the second screw blade 53, which is fixed to the cylindrical member 52a and the first pipe 52b with a small outer diameter, is wound around the cylindrical member 52a and the first pipe 52b with a predetermined gap therebetween. It has been.

第２駆動軸５１は、断面形状が正六角形の棒材によって形成されており、その搬送上流側の端部が第１駆動軸４１の搬送下流側の端部に固定され、その搬送下流側の端部が後述する第２搬送スクリュ２１の搬送上流側端部のナット部材５６ｂに伸縮方向にスライド自在に支持されている。   The second drive shaft 51 is formed of a rod having a regular hexagonal cross section, and its upstream end is fixed to the downstream end of the first drive shaft 41, and its downstream downstream side is fixed. The end portion is supported by a nut member 56b at the end portion on the upstream side of conveyance of the second conveyance screw 21 described later so as to be slidable in the telescopic direction.

第２筒軸５２の搬送下流側の端部には、支持部材５２ｆが固定されており、この支持部材５２ｆがベアリング５５を介して、第２ケース２４の搬送上流側の端部のスリーブ２７に固定された軸受部材５４に回動自在に支持されている。支持部材５２ｆには、円柱状の貫通穴が形成されており、この貫通穴に第２駆動軸５１が連通されている。これにより、第２ケース２４が第１ケース２３に対してスライド移動すると、第２スクリュ５０が第２ケース２４とともに第２駆動軸５１に対して伸縮方向にスライド移動し、支持部材５２ｆの貫通穴を連通させた第２駆動軸５１が第２筒軸５２及び第２スクリュ羽根５３に対して伸縮方向に相対移動するように構成されている。   A support member 52f is fixed to an end portion of the second cylindrical shaft 52 on the downstream side of conveyance, and the support member 52f is attached to the sleeve 27 at the end portion of the second case 24 on the upstream side of conveyance via a bearing 55. A fixed bearing member 54 is rotatably supported. The support member 52f is formed with a cylindrical through hole, and the second drive shaft 51 is communicated with the through hole. Thus, when the second case 24 slides relative to the first case 23, the second screw 50 slides in the telescopic direction with respect to the second drive shaft 51 together with the second case 24, and the through hole of the support member 52f The second drive shaft 51 that communicates with each other is configured to move relative to the second cylinder shaft 52 and the second screw blade 53 in the expansion / contraction direction.

第２筒軸５２の搬送上流側の端部は、第２筒軸５２の筒状部材５２ａが第１スクリュ４０の第１駆動軸４１に外嵌され、かつ、第２筒軸５２の筒状部材５２ａが第１筒軸４２に内嵌された状態で、第１スクリュ４０の第１駆動軸４１と第１筒軸４２との間に嵌め込まれている。   The end of the second cylinder shaft 52 on the upstream side of the conveyance is such that the cylindrical member 52 a of the second cylinder shaft 52 is fitted on the first drive shaft 41 of the first screw 40, and the cylindrical shape of the second cylinder shaft 52. The member 52 a is fitted between the first drive shaft 41 and the first cylinder shaft 42 of the first screw 40 in a state in which the member 52 a is fitted into the first cylinder shaft 42.

第１駆動軸４１の外周部には、断面形状が矩形状の案内溝４１ｂが螺旋状に伸縮方向の両端部に亘って形成され、第２筒軸５２の筒状部材５２ａには案内部材取付部５２ｄが形成されており、この案内溝４１ｂと案内部材取付部５２ｄとに亘ってコマ状の案内部材４５を取り付けた状態で、第２筒軸５２の筒状部材５２ａが第１スクリュ４０の第１駆動軸４１と第１筒軸４２との間に嵌め込まれている（図１２参照）。   A guide groove 41b having a rectangular cross-sectional shape is formed on the outer periphery of the first drive shaft 41 in a spiral manner across both ends in the expansion / contraction direction, and a guide member is attached to the cylindrical member 52a of the second cylinder shaft 52. A portion 52d is formed, and the cylindrical member 52a of the second cylindrical shaft 52 is attached to the first screw 40 in a state where the top-like guide member 45 is attached across the guide groove 41b and the guide member attaching portion 52d. It is fitted between the first drive shaft 41 and the first cylinder shaft 42 (see FIG. 12).

次に、図１０に基づいて第２スクリュ羽根５３の先端形状について説明する。図１０に示すように、第２スクリュ５０の第２スクリュ羽根５３の搬送上流側の端部（第１スクリュ４０に入り込む側の端部）には、搬送上流側に向かって第２スクリュ羽根５３の羽根幅Ｗが徐々に先細り状に狭くなるような先端幅狭部５３Ａ（第２スクリュ羽根５３の第１スクリュ４０側の先端部に相当）が形成されている。先端幅狭部５３Ａの端部５３Ｂは、丸く湾曲した形状に成形されており、第１搬送スクリュ２０を短縮させて第２スクリュ５０が第１スクリュ４０側に第１スクリュ４０に対して相対回転しながら入り込む際に、先端幅狭部５３Ａの端部５３Ｂが徐々に第１スクリュ４０側に入り込むように構成されている。   Next, the tip shape of the second screw blade 53 will be described with reference to FIG. As shown in FIG. 10, at the end of the second screw blade 53 of the second screw 50 on the transport upstream side (the end on the side entering the first screw 40), the second screw blade 53 is directed toward the transport upstream side. The tip width narrow portion 53A (corresponding to the tip end of the second screw blade 53 on the first screw 40 side) is formed such that the blade width W of the second screw blade gradually narrows. The end 53B of the narrow tip 53A is formed in a round and curved shape, the first conveying screw 20 is shortened, and the second screw 50 rotates relative to the first screw 40 on the first screw 40 side. However, when entering, the end portion 53B of the narrow tip end portion 53A gradually enters the first screw 40 side.

第２スクリュ羽根５３の外周端５３Ｃは、丸く湾曲した形状に成形されており、これにより、第１搬送スクリュ２０を短縮させて第２スクリュ５０が第１スクリュ４０側に、第１スクリュ４０に対して相対回転しながら入り込む際に、第２スクリュ羽根５３の外周端５３Ｃが穀粒を損傷することを防止できる。   The outer peripheral end 53 </ b> C of the second screw blade 53 is formed in a round and curved shape, whereby the first conveying screw 20 is shortened so that the second screw 50 is moved to the first screw 40 side and the first screw 40 is moved to the first screw 40. On the other hand, when entering with relative rotation, the outer peripheral end 53C of the second screw blade 53 can be prevented from damaging the grain.

図１０（ｂ）に示すように、第２スクリュ羽根５３の羽根幅Ｗは、図１０（ｂ）に示すａの位置では、搬送上流側端部の幅狭に構成された部分以外の第２スクリュ羽根５３の羽根幅と略同じ羽根幅に設定されており、この図１０（ｂ）に示すａの位置からｂの位置までの周方向に約１８０度の範囲内で徐々に羽根幅Ｗが狭くなるように設定されている。   As shown in FIG. 10 (b), the blade width W of the second screw blade 53 is a second width other than the portion configured to have a narrow width at the upstream end of the conveyance at the position a shown in FIG. 10 (b). The blade width is set to be substantially the same as the blade width of the screw blade 53, and the blade width W gradually increases within a range of about 180 degrees in the circumferential direction from the position a to the position b shown in FIG. It is set to be narrow.

図１０（ａ）に示すように、先端幅狭部５３Ａは、横オーガ９が最も伸長した状態で第１スクリュ羽根４３と第２スクリュ羽根５３とが搬送方向でラップする位置に形成されており（図１０（ｂ）におけるａの位置が、第１スクリュ羽根４３の搬送下流側端と略同じ位置又は搬送下流側端より搬送上流側の位置に設定されており）、これにより、先端幅狭部５３Ａを形成することにより第１及び第２スクリュの搬送能力が低下することを防止できる。   As shown in FIG. 10 (a), the narrow end portion 53A is formed at a position where the first screw blade 43 and the second screw blade 53 wrap in the transport direction with the horizontal auger 9 extended most. (The position a in FIG. 10B is set to the position substantially the same as the downstream conveyance end of the first screw blade 43 or the position upstream of the conveyance downstream end). By forming the portion 53A, it is possible to prevent the transport capability of the first and second screws from decreasing.

次に、図１１及び図１２に基づいて案内部材４５付近の詳細構造について説明する。図１１及び図１２に示すように、第２筒軸５２の筒状部材５２ａの内周面から円柱状に凹入する案内部材取付部５２ｄが形成されている。案内部材取付部５２ｄの内径は、後述する案内部材４５の本体部分４５ａの外径より少し大きめに加工されており、案内部材４５を案内部材取付部５２ｄに取り付けた状態で、案内部材４５が軸心Ｐ周りに無理なく回動するように構成されている。   Next, a detailed structure near the guide member 45 will be described with reference to FIGS. 11 and 12. As shown in FIGS. 11 and 12, a guide member attachment portion 52 d that is recessed in a columnar shape from the inner peripheral surface of the cylindrical member 52 a of the second cylindrical shaft 52 is formed. An inner diameter of the guide member mounting portion 52d is processed to be slightly larger than an outer diameter of a main body portion 45a of the guide member 45 described later, and the guide member 45 is pivoted in a state where the guide member 45 is mounted on the guide member mounting portion 52d. It is configured to rotate around the center P without difficulty.

案内部材取付部５２ｄは、図１２（ａ）における筒状部材５２ａの紙面下方側から加工されており、この案内部材取付部５２ｄを加工するための加工穴５２ｅを、案内部材４５を案内部材取付部５２ｄに取り付ける取付穴として兼用することができ、図１２（ａ）における紙面下方側から案内部材４５を筒状部材５２ａの案内部材取付部５２ｄに内嵌挿入できるように構成されている。そのため、案内部材４５の組立作業の作業性を向上できる。   The guide member mounting portion 52d is processed from the lower side of the paper surface of the cylindrical member 52a in FIG. 12A, and a processing hole 52e for processing the guide member mounting portion 52d is provided as a guide member 45. It can also serve as an attachment hole attached to the portion 52d, and is configured such that the guide member 45 can be fitted and inserted into the guide member attachment portion 52d of the cylindrical member 52a from the lower side of the drawing in FIG. Therefore, the workability of the assembly work of the guide member 45 can be improved.

案内部材４５は、磨耗し難い焼入れ加工等を施した鉄鋼材によって構成されており、円柱状の本体部分４５ａと、この本体部分４５ａから突出する係合部４５ｂとを一体的に成形することによって構成されている。係合部４５ｂは、案内溝４１ｂに沿って案内部材４５が移動する方向に直交する方向の断面形状が矩形状に形成されて、加工穴５２ｅ側から見た形状が、四隅を湾曲させた長円形に形成されている。このように、係合部４５ｂの加工穴５２ｅ側から見た形状を、四隅を湾曲させた長円形に形成することにより、案内部材４５の係合部４５ｂが螺旋状の案内溝４１ｂに沿って無理なく移動できる。   The guide member 45 is made of a steel material that has been hardened and hardened so that it is difficult to wear. By integrally forming a cylindrical main body portion 45a and an engaging portion 45b protruding from the main body portion 45a, the guide member 45 is formed. It is configured. The engaging portion 45b has a rectangular cross-sectional shape in a direction orthogonal to the direction in which the guide member 45 moves along the guide groove 41b, and the shape viewed from the machining hole 52e is a length obtained by curving the four corners. It is formed in a circle. In this way, the engagement portion 45b of the guide member 45 is formed along the spiral guide groove 41b by forming the shape of the engagement portion 45b as viewed from the machining hole 52e side into an oval shape with curved four corners. You can move without difficulty.

案内部材４５の係合部４５ｂの幅は、第１駆動軸４１の案内溝４１ｂの幅より少し小さく設定されており、案内部材４５を取り付けた状態で案内部材４５の係合部４５ｂと第１駆動軸４１の案内溝４１ｂとの間に所定の隙間が形成されるように構成されている。このように構成することにより、案内溝４１ｂに対する案内部材４５の係合部４５ｂの方向が変更され易くなり、案内部材４５が無理なく回転できるように構成されている。   The width of the engaging portion 45b of the guide member 45 is set to be slightly smaller than the width of the guide groove 41b of the first drive shaft 41, and when the guide member 45 is attached, A predetermined gap is formed between the drive shaft 41 and the guide groove 41b. With this configuration, the direction of the engaging portion 45b of the guide member 45 with respect to the guide groove 41b can be easily changed, and the guide member 45 can be rotated without difficulty.

案内部材取付部５２ｄに案内部材４５を内嵌した状態で、第１駆動軸４１に形成された案内溝４１ｂに案内部材４５の係合部４５ｂを係合させて、筒状部材５２ａに第１駆動軸４１を内嵌することで、案内部材４５を組み付けることができるように構成されている。   In a state where the guide member 45 is fitted in the guide member mounting portion 52d, the engaging portion 45b of the guide member 45 is engaged with the guide groove 41b formed in the first drive shaft 41, and the cylindrical member 52a is engaged with the first member. The guide shaft 45 can be assembled by fitting the drive shaft 41 therein.

図１２（ｂ）に示すように、伸縮機構３３により第１及び第２ケース２３，２４を伸縮させて第２ケース２４が第１ケース２３に対してスライド移動して、例えば第１駆動軸４１に対して案内部材４５が搬送上流側（図１２（ｂ）中の白矢印の方向）に移動すると、案内部材４５の係合部４５ｂが案内溝４１ｂの搬送上流側の案内面に接当して、回動自在に支持された案内部材４５が少し回転し、適度な摩擦力を案内部材４５の係合部４５ｂと案内溝４１ｂとの間に作用させながら、案内部材４５が案内溝４１ｂに沿って無理なく移動するように構成されている。   As shown in FIG. 12B, the first and second cases 23, 24 are expanded and contracted by the expansion / contraction mechanism 33, and the second case 24 slides relative to the first case 23, for example, the first drive shaft 41. When the guide member 45 moves to the upstream side of conveyance (in the direction of the white arrow in FIG. 12B), the engaging portion 45b of the guide member 45 contacts the guide surface on the upstream side of the guide groove 41b. Thus, the guide member 45 supported in a freely rotating manner rotates slightly, and an appropriate frictional force is applied between the engaging portion 45b of the guide member 45 and the guide groove 41b, while the guide member 45 moves into the guide groove 41b. It is configured to move along with ease.

案内部材４５は第２筒軸５２の案内部材取付部５２ｄに回動自在に支持されているため、伸縮方向を逆方向に転換した場合や伸縮している最中に案内部材４５の係合部４５ｂの移動が妨げられた場合等に、案内部材４５が自ら回転することにより案内溝４１ｂに対する案内部材４５の係合部４５ｂの方向が少し変更されて、係合部４５ｂが無理なく案内溝４１ｂを移動できるように構成されている。   Since the guide member 45 is rotatably supported by the guide member mounting portion 52d of the second cylindrical shaft 52, the engaging portion of the guide member 45 is changed when the expansion / contraction direction is changed to the reverse direction or during expansion / contraction. When the movement of 45b is hindered or the like, the guide member 45 rotates by itself to slightly change the direction of the engaging portion 45b of the guide member 45 with respect to the guide groove 41b. It is configured to be able to move.

また、案内部材４５の本体部分４５ａが必要以上に回転しないため、案内部材４５の本体部分４５ａが磨耗されて筒状部材５２ａの案内部材取付部５２ｄとの間の隙間が大きくなることによるガタツキや案内部材４５及び案内取付部５２ｄの損傷を防止できる。   Further, since the main body portion 45a of the guide member 45 does not rotate more than necessary, the main body portion 45a of the guide member 45 is worn and the gap between the cylindrical member 52a and the guide member mounting portion 52d is increased. Damage to the guide member 45 and the guide attachment portion 52d can be prevented.

なお、案内溝４１ｂ及び案内部材４５の形状は異なるものであってもよく、例えば案内部材４５を球状の伝動ボール（図示せず）で構成し、案内溝４１ｂの断面形状を半円弧状に構成して、筒状部材５２ａに伝動ボールを回動自在に支持し、案内溝４１ｂに沿って伝動ボールを移動させる構成を採用してもよい。また、案内部材４５の係合部４５ｂの加工穴５２ｅ側から見た形状は、断面形状が矩形状になる形状であれば異なる形状（例えば円形や長方形等）であってもよい。   The shapes of the guide groove 41b and the guide member 45 may be different. For example, the guide member 45 is constituted by a spherical transmission ball (not shown), and the cross-sectional shape of the guide groove 41b is constituted by a semicircular arc shape. Then, a configuration may be adopted in which the transmission ball is rotatably supported on the cylindrical member 52a and the transmission ball is moved along the guide groove 41b. Further, the shape of the engaging portion 45b of the guide member 45 viewed from the processing hole 52e side may be a different shape (for example, a circle or a rectangle) as long as the cross-sectional shape is a rectangular shape.

図４に示すように、第１駆動軸４１の外周部に形成した螺旋状の案内溝４１ｂの搬送方向のピッチは、第１スクリュ羽根４３及び第２スクリュ羽根５３の搬送方向のスクリュピッチと略同一の間隔に設定されており、また、第１スクリュ４０に対して第２スクリュ５０が回転しながら移動する際に、第１スクリュ羽根４３の搬送方向のスクリュピッチの略中間位置を第２スクリュ羽根５３が移動するように案内溝４１ｂが形成されている。   As shown in FIG. 4, the pitch in the transport direction of the spiral guide groove 41 b formed on the outer periphery of the first drive shaft 41 is substantially the same as the screw pitch in the transport direction of the first screw blade 43 and the second screw blade 53. When the second screw 50 moves while rotating with respect to the first screw 40, the substantially intermediate position of the screw pitch in the conveying direction of the first screw blade 43 is set to the second screw. A guide groove 41b is formed so that the blade 53 moves.

上記のように、第２スクリュ羽根５３と第１スクリュ羽根４３を上述した形状に形成し、第２筒軸５２の筒状部材５２ａを第２スクリュ５０の第１駆動軸４１と第１筒軸４２との間に嵌合させて、案内溝４１ｂに沿って案内部材４５を案内させることによって、第２スクリュ５０が第１スクリュ４０と重なり合いながら第１スクリュ４０に対してスライド移動するスライド機構が構成されている。   As described above, the second screw blade 53 and the first screw blade 43 are formed in the shape described above, and the cylindrical member 52a of the second cylindrical shaft 52 is used as the first drive shaft 41 and the first cylindrical shaft of the second screw 50. 42, a sliding mechanism that slides relative to the first screw 40 while the second screw 50 overlaps the first screw 40 by guiding the guide member 45 along the guide groove 41b. It is configured.

このように、第１駆動軸４１の案内溝４１ｂのピッチ、並びに、第１スクリュ羽根４３及び第２スクリュ羽根５３のスクリュピッチを略同一に設定し、第１スクリュ羽根４３の搬送方向のスクリュピッチの略中間位置を第２スクリュ羽根５３が移動するように構成することにより、第１搬送スクリュ２０を伸縮する際に、第１スクリュ４０の第１スクリュ羽根４３と第２スクリュ５０の第２スクリュ羽根５３との間の隙間を確保することができるため、横オーガ９を伸縮する際に、第１スクリュ羽根４３と第２スクリュ羽根５３との間に穀粒が挟まれて穀粒が損傷することを防止することができる。   Thus, the pitch of the guide groove 41b of the first drive shaft 41 and the screw pitch of the first screw blade 43 and the second screw blade 53 are set substantially the same, and the screw pitch in the transport direction of the first screw blade 43 is set. When the first conveying screw 20 is expanded and contracted, the first screw blade 43 of the first screw 40 and the second screw 50 of the second screw 50 are configured so that the second screw blade 53 moves at a substantially intermediate position. Since the gap between the blades 53 can be secured, when the horizontal auger 9 is expanded and contracted, the grains are sandwiched between the first screw blades 43 and the second screw blades 53 and the grains are damaged. This can be prevented.

次に、図５及び図６に基づいて第２搬送スクリュ２１の詳細構造について説明する。図５及び図６に示すように、第１搬送スクリュ２０の搬送下流側に、第２搬送スクリュ２１を備え、第１搬送スクリュ２０によって第２ケース２４に搬送されてきた穀粒を第２ケース２４の搬送下流側に向かって搬送するように構成されている。第２ケース２４の搬送下流側の端部には、下方に開放された排出口９ｂが形成されており、第１及び第２搬送スクリュ２０，２１によって搬送されてきた穀粒をこの排出口９ｂから下方に排出できるように構成されている。   Next, the detailed structure of the 2nd conveyance screw 21 is demonstrated based on FIG.5 and FIG.6. As shown in FIG.5 and FIG.6, the 2nd conveyance screw 21 is provided in the conveyance downstream of the 1st conveyance screw 20, and the grain conveyed by the 1st conveyance screw 20 to the 2nd case 24 is 2nd case. It is comprised so that it may convey toward 24 conveyance downstream. A discharge port 9b opened downward is formed at an end of the second case 24 on the downstream side of conveyance, and the grains conveyed by the first and second conveyance screws 20 and 21 are discharged from the discharge port 9b. It is comprised so that it can discharge below from.

第２搬送スクリュ２１は、円筒状の筒軸５６と、この筒軸５６の外周部の略全長に亘って巻き付けられて固着された螺旋状のスクリュ羽根５７等を備えて構成されている。   The second conveying screw 21 includes a cylindrical tube shaft 56 and a helical screw blade 57 that is wound and fixed over substantially the entire length of the outer peripheral portion of the tube shaft 56.

第２搬送スクリュ２１の筒軸５６の搬送下流側の端部から支軸５６ａが延出されており、この支軸５６ａがベアリング５８を介して第２ケース２４に回動自在に支持されている。一方、第２搬送スクリュ２１の筒軸５６の搬送上流側の端部には、六角穴が加工されたナット部材５６ｂが固着されており、このナット部材５６ｂに断面形状が六角形状の第２駆動軸５１の先端部が内嵌されている。   A support shaft 56a extends from the end portion of the second transport screw 21 on the downstream side of the cylindrical shaft 56, and the support shaft 56a is rotatably supported by the second case 24 via a bearing 58. . On the other hand, a nut member 56b in which a hexagonal hole is machined is fixed to an end portion of the second conveying screw 21 on the upstream side of the cylindrical shaft 56, and a second drive having a hexagonal cross section is secured to the nut member 56b. The tip of the shaft 51 is fitted inside.

上記のように、第２搬送スクリュ２１を構成することによって、ベベル伝達機構１９及び第１駆動軸４１を介して第２駆動軸５１が回転すると、第２搬送スクリュ２１もこの第２駆動軸５１と一体回動して、第２ケース２４に搬送されてきた穀粒を第２ケース２４の搬送下流側の端部に設けた排出口９ｂに向かって搬送するように構成されている。   As described above, by configuring the second transport screw 21, when the second drive shaft 51 rotates through the bevel transmission mechanism 19 and the first drive shaft 41, the second transport screw 21 also has the second drive shaft 51. And the grain conveyed to the second case 24 is conveyed toward the discharge port 9b provided at the end of the second case 24 on the downstream side of conveyance.

次に、図５、図８及び図９に基づいて伸縮機構３３の詳細構造について説明する。図５、図８及び図９に示すように、第１ケース２３と第２ケース２４とに亘って、横オーガ９を伸縮する伸縮機構３３が設けられており、伸縮機構３３を操作すると、第２ケース２４が第１ケース２３に入り込むことによって横オーガ９の長さを調節できるように構成されている。   Next, the detailed structure of the telescopic mechanism 33 will be described with reference to FIGS. As shown in FIGS. 5, 8, and 9, an expansion / contraction mechanism 33 that expands / contracts the horizontal auger 9 is provided across the first case 23 and the second case 24. The length of the horizontal auger 9 can be adjusted by the two cases 24 entering the first case 23.

第１ケース２３の搬送下流側端部の上側にブラケット３４が固定されており、このブラケット３４に電動モータ３５が減速機３６を介して取り付けられている。減速機３６の出力軸３６ａには、ピニオンギア３７が固定されており、第１ケース２３の上側に設けた開口２３ａを介して、このピニオンギア３７が第２ケース２４の上側に設けたラック３２のラック溝３２ａに係合するように構成されている。このように、第１ケース２３側に電動モータ３５を設け、第２ケース２４側にラック３２を設けて伸縮機構３３を構成することによって、電動モータ３５への配線が容易になる。また、第１ケース２３及び第２ケース２４の上側に伸縮機構３３を設ける構成を採用することによって、例えば横オーガ９を旋回させる際に、伸縮機構３３を構成するブラケット３４、電動モータ３５、減速機３６等が旋回の邪魔になることを防止でき、横オーガ９の旋回作業の作業性を向上させることができる。   A bracket 34 is fixed to the upper side of the conveyance downstream end of the first case 23, and an electric motor 35 is attached to the bracket 34 via a speed reducer 36. A pinion gear 37 is fixed to the output shaft 36 a of the speed reducer 36, and the rack 32 provided on the upper side of the second case 24 through the opening 23 a provided on the upper side of the first case 23. It is configured to engage with the rack groove 32a. Thus, by providing the electric motor 35 on the first case 23 side and providing the rack 32 on the second case 24 side to form the telescopic mechanism 33, wiring to the electric motor 35 is facilitated. Further, by adopting a configuration in which the expansion / contraction mechanism 33 is provided on the upper side of the first case 23 and the second case 24, for example, when the horizontal auger 9 is turned, the bracket 34, the electric motor 35, the deceleration constituting the expansion / contraction mechanism 33 The machine 36 and the like can be prevented from interfering with the turning, and the workability of the turning work of the horizontal auger 9 can be improved.

上記のように伸縮機構３３を構成することによって、操縦部４に設けたオーガ操作リモコン（図示せず）を伸長側に操作すると電動モータ３５が正回転するとともに減速機３６の出力軸３６ａが正回転して、この出力軸３６ａに固定されたピニオンギア３７が正回転する。そして、第２ケース２４が第１ケース２３に対して搬送下流側に移動して横オーガ９を伸長させることができる。一方、操縦部４に設けたオーガ操作リモコンを短縮側に操作すると、電動モータ３５が逆回転するとともに減速機３６の出力軸３６ａが逆回転して、この出力軸３６ａに固定されたピニオンギア３７が逆回転する。そして、第２ケース２４が第１ケース２３に対して搬送上流側に移動して横オーガ９を短縮させることができる。   By configuring the telescopic mechanism 33 as described above, when the auger operation remote controller (not shown) provided in the control unit 4 is operated to the extension side, the electric motor 35 rotates forward and the output shaft 36a of the speed reducer 36 rotates forward. The pinion gear 37 fixed to the output shaft 36a rotates forward. And the 2nd case 24 can move to the conveyance downstream side with respect to the 1st case 23, and can extend the horizontal auger 9. FIG. On the other hand, when the auger operation remote controller provided in the control unit 4 is operated to the shortened side, the electric motor 35 rotates in the reverse direction and the output shaft 36a of the speed reducer 36 rotates in the reverse direction, and the pinion gear 37 fixed to the output shaft 36a. Rotates in reverse. And the 2nd case 24 can move to the conveyance upstream side with respect to the 1st case 23, and the horizontal auger 9 can be shortened.

このように、第２ケース２４側に設けたラック３２と第１ケース２３側に設けた電動モータ３５及びピニオンギア３７によって、第１ケース２３に対して第２ケース２４をスライド移動させる構成を採用することによって、構造を簡素化することができ、製造コストを削減できる。   In this way, a configuration is adopted in which the second case 24 is slid relative to the first case 23 by the rack 32 provided on the second case 24 side, the electric motor 35 and the pinion gear 37 provided on the first case 23 side. By doing so, the structure can be simplified and the manufacturing cost can be reduced.

［横オーガの伸縮状況］
図３〜図８に基づいて横オーガ９の伸縮状況について説明する。図３〜図８に示すように、第１駆動軸４１を停止した状態で、伸縮機構３３により第１及び第２ケース２３，２４を短縮させて第２ケース２４が第１ケース２３に対して搬送上流側にスライド移動すると、第２スクリュ５０の第２筒軸５２が第１スクリュ４０の第１駆動軸４１と第１筒軸４２との間を案内溝４１ｂに案内されて第１スクリュ４０に対して穀粒を排出口９ｂに搬送する方向に相対回転しながら第１スクリュ４０の方に入り込んで、第２スクリュ５０の第２スクリュ羽根５３が第１スクリュ４０の第１スクリュ羽根４３のスクリュピッチの間を第１スクリュ４０に対して穀粒を排出口９ｂに搬送する方向に相対回転しながら第１スクリュ４０の方に入り込むことによって、第１搬送スクリュ２０が短縮するように構成されている。 [Horizontal auger expansion and contraction]
The expansion / contraction state of the horizontal auger 9 will be described with reference to FIGS. As shown in FIGS. 3 to 8, in a state where the first drive shaft 41 is stopped, the first and second cases 23, 24 are shortened by the expansion / contraction mechanism 33, so that the second case 24 is made to the first case 23. When the second cylinder shaft 52 of the second screw 50 is slid and moved to the upstream side of the conveyance, the first screw 40 is guided between the first drive shaft 41 and the first cylinder shaft 42 of the first screw 40 by the guide groove 41b. The second screw blade 53 of the second screw 50 enters the first screw blade 43 of the first screw 40 while entering the first screw 40 while relatively rotating in the direction of conveying the grain to the discharge port 9b. The first conveying screw 20 is configured to be shortened by entering the first screw 40 while rotating relative to the first screw 40 in the direction of conveying the grains to the discharge port 9b with respect to the first screw 40. ing

一方、第１駆動軸４１を停止した状態で、伸縮機構３３により第１及び第２ケース２３，２４を伸長させて第２ケース２４が第１ケース２３に対して搬送下流側にスライド移動すると、第２スクリュ５０の第２筒軸５２が第１スクリュ４０の第１駆動軸４１と第１筒軸４２との間を案内溝４１ｂに案内されて第１スクリュ４０に対して穀粒を排出口９ｂに搬送する方向とは逆方向に相対回転しながら搬送下流側に相対移動するとともに、第２スクリュ５０の第２スクリュ羽根５３が第１スクリュ４０の第１スクリュ羽根４３のスクリュピッチの間を第１スクリュ４０に対して穀粒を排出口９ｂに搬送する方向とは逆方向に相対回転しながら搬送下流側に相対移動して、第１搬送スクリュ２０が伸長するように構成されている。   On the other hand, when the first drive shaft 41 is stopped, the first and second cases 23 and 24 are extended by the expansion / contraction mechanism 33 and the second case 24 is slid to the transport downstream side with respect to the first case 23. The second cylinder shaft 52 of the second screw 50 is guided by the guide groove 41b between the first drive shaft 41 and the first cylinder shaft 42 of the first screw 40, and the grain is discharged to the first screw 40. The second screw blade 53 of the second screw 50 moves between the screw pitches of the first screw blades 43 of the first screw 40 while moving relatively downstream in the direction opposite to the direction of conveyance to 9b. The first conveying screw 20 is configured to extend relative to the first screw 40 while relatively rotating in the direction opposite to the direction in which the grain is conveyed to the discharge port 9b, while moving relative to the conveying downstream side.

また、伸縮機構３３を操作せずに第１駆動軸４１が回転して第１スクリュ４０が回転すると、搬送方向の力が働かないため、第１駆動軸４１の動力が案内部材４５を介して第２筒軸５２の筒状部材５２ａに伝達されて、第２スクリュ５０が第１スクリュ４０と一体回動するように構成されている。このように、案内部材４５、第１駆動軸４１に設けた案内溝４１ｂ、第２筒軸５２に設けた案内部材取付部５２ｄ等により、第２スクリュ５０が第１スクリュ４０と一体回動するように構成することによって、例えば、第１及び第２スクリュ４０，５０をそれぞれ独立して回動駆動させて、横オーガ９を伸縮可能に構成する場合に比べて、第１及び第２スクリュ４０，５０を回転駆動させる機構を別個に設ける必要がなくなって、第１及び第２スクリュ４０，５０を回転駆動させる機構を簡素化することができる。   Further, when the first drive shaft 41 rotates and the first screw 40 rotates without operating the telescopic mechanism 33, the force in the transport direction does not work, so the power of the first drive shaft 41 is transmitted via the guide member 45. The second screw 50 is configured to rotate integrally with the first screw 40 by being transmitted to the cylindrical member 52 a of the second cylindrical shaft 52. Thus, the second screw 50 rotates integrally with the first screw 40 by the guide member 45, the guide groove 41b provided on the first drive shaft 41, the guide member mounting portion 52d provided on the second cylinder shaft 52, and the like. By configuring as described above, for example, the first and second screws 40 and 50 can be driven to rotate independently of each other and the lateral auger 9 can be expanded and contracted. , 50 need not be provided separately, and the mechanism for rotating the first and second screws 40, 50 can be simplified.

なお、第１駆動軸４１に螺旋状の案内溝４１ｂを設けて、この第１駆動軸４１と第１筒軸４２との間に案内部材４５を設けた第２筒軸５２を配置することによって、案内溝４１ｂを加工した第１駆動軸４１，案内部材４５等の部品を第１スクリュ４０の第１筒軸４２の内部に収容することができる。そのため、横オーガ９内を通過する穀粒の粉塵や水分が第１駆動軸４１や案内部材４５等に付着し難くなって、無理なくスライド移動させることができるとともに、第１駆動軸４１や案内部材４５等の錆び付きを防止できる。   A spiral guide groove 41b is provided in the first drive shaft 41, and a second cylindrical shaft 52 provided with a guide member 45 is disposed between the first drive shaft 41 and the first cylindrical shaft 42. Parts such as the first drive shaft 41 and the guide member 45 in which the guide groove 41b is processed can be accommodated in the first cylindrical shaft 42 of the first screw 40. Therefore, the dust and moisture of the grains passing through the horizontal auger 9 are difficult to adhere to the first drive shaft 41, the guide member 45, etc., and can be slid and moved without difficulty, and the first drive shaft 41 and the guide The rusting of the member 45 etc. can be prevented.

図３に示すように、横オーガ９が最も伸長した状態（図３（ａ）の状態）から伸縮機構３３によって第１ケース２３に対して第２ケース２４が搬送上流側に移動すると、第２ケース２４の内部に位置する第２駆動軸５１は筒軸５６の内部を搬送下流側に相対移動する。そして、第２駆動軸５１を除く第１搬送スクリュ２０の長さが短くなって、第１搬送スクリュ２０の第２スクリュ５０が搬送上流側に押し込まれる。そして、第１搬送スクリュ２０の第２スクリュ５０が、第１搬送スクリュ２０の第１スクリュ４０に対して穀粒を排出口９ｂに搬送する方向に相対回転しながら第１搬送スクリュ２０の第１スクリュ４０の方に入り込む。   As shown in FIG. 3, when the second case 24 is moved upstream of the first case 23 by the telescopic mechanism 33 from the state in which the horizontal auger 9 is most extended (the state of FIG. The second drive shaft 51 located inside the case 24 moves relatively inside the cylinder shaft 56 toward the downstream side of conveyance. And the length of the 1st conveyance screw 20 except the 2nd drive shaft 51 becomes short, and the 2nd screw 50 of the 1st conveyance screw 20 is pushed in the conveyance upstream. Then, the second screw 50 of the first transport screw 20 rotates relative to the first screw 40 of the first transport screw 20 in the direction of transporting the grains to the discharge port 9b, and the first of the first transport screw 20 is rotated. Enter the screw 40.

一方、横オーガ９が最も短縮した状態（図３（ｂ）の状態）から伸縮機構３３によって第１ケース２３に対して第２ケース２４が搬送下流側に移動すると、第２ケース２４の内部に位置する第２駆動軸５１は筒軸５６の内部を搬送上流側に相対移動する。そして、第２駆動軸５１を除く第１搬送スクリュ２０の長さが長くなって、第１搬送スクリュ２０の第２スクリュ５０が搬送下流側に引っ張られる。そして、第１搬送スクリュ２０の第２スクリュ５０は、その搬送下流側の端部が第２ケース２４側に支持されているため、第１搬送スクリュ２０の第２スクリュ５０のみが搬送下流側に相対移動すると共に、第１搬送スクリュ２０の第２スクリュ５０が第１スクリュ４０に対して穀粒を排出口９ｂに搬送する方向とは逆方向に相対回転する。   On the other hand, when the second case 24 is moved downstream of the first case 23 with respect to the first case 23 by the telescopic mechanism 33 from the state in which the lateral auger 9 is shortened most (the state of FIG. The second drive shaft 51 that is positioned relatively moves inside the cylindrical shaft 56 toward the upstream side of conveyance. And the length of the 1st conveyance screw 20 except the 2nd drive shaft 51 becomes long, and the 2nd screw 50 of the 1st conveyance screw 20 is pulled to the conveyance downstream side. And since the 2nd screw 50 of the 1st conveyance screw 20 is supporting the end part of the conveyance downstream to the 2nd case 24 side, only the 2nd screw 50 of the 1st conveyance screw 20 is in the conveyance downstream. While relatively moving, the second screw 50 of the first conveying screw 20 rotates relative to the first screw 40 in the direction opposite to the direction in which the grain is conveyed to the discharge port 9b.

これにより、図３に示すように、第１搬送スクリュ２０の第２スクリュ５０が第１搬送スクリュ２０の第１スクリュ４０に対して長さＬ相対移動することによって、第１搬送スクリュ２０が長さＬ伸縮し、横オーガ９が長さＬ伸縮する。   As a result, as shown in FIG. 3, the second screw 50 of the first transport screw 20 moves relative to the first screw 40 of the first transport screw 20 by a length L, so that the first transport screw 20 is long. The horizontal auger 9 expands and contracts by a length L.

［発明の実施の第１別形態］
前述の［発明を実施するための最良の形態］における第１搬送スクリュ２０に代えて、図１３に示すような第１搬送スクリュ２０を構成してもよい。図１３は、第１搬送スクリュ２０付近の縦断面図である。なお、図１３に示す以外の他の構成は、前述の［発明を実施するための最良の形態］と同様である。 [First Alternative Embodiment of the Invention]
Instead of the first conveying screw 20 in the above-mentioned [Best Mode for Carrying Out the Invention], a first conveying screw 20 as shown in FIG. 13 may be configured. FIG. 13 is a longitudinal sectional view in the vicinity of the first conveying screw 20. The configuration other than that shown in FIG. 13 is the same as the above-described [Best Mode for Carrying Out the Invention].

図１３に示すように、第１スクリュ４０は、第１駆動軸４１と、この第１駆動軸４１の外周部から所定の隙間を開けて設けた第１駆動軸４１と同心状の第１筒軸４２と、この第１筒軸４２の外周部に略全長に亘って固着された螺旋状の第１スクリュ羽根４３とを備えて構成されている。   As shown in FIG. 13, the first screw 40 includes a first drive shaft 41 and a first cylinder concentric with the first drive shaft 41 provided with a predetermined gap from the outer periphery of the first drive shaft 41. A shaft 42 and a spiral first screw blade 43 fixed to the outer peripheral portion of the first tube shaft 42 over substantially the entire length are provided.

第１筒軸４２の搬送上流側の端部には、連結部４２ａが固定されており、この連結部４２ａと第１駆動軸４１とに亘って第１ワンウェイクラッチ６０が装備されている。第１ワンウェイクラッチ６０は、第１駆動軸４１が穀粒を搬送する方向に回転すると、第１駆動軸４１側に設けたクラッチ体と連結部４２ａ側に設けたクラッチ体とが係合し、第１筒軸４２が第１駆動軸４１と一体回動するように構成されており、第１筒軸４２が第１駆動軸４１に対して穀粒を搬送する方向に相対回転しようとすると、クラッチ体の係合が解除し、第１駆動軸４１に対する第１筒軸４２の相対回転が許容されるように構成されている。   A connecting portion 42 a is fixed to an end of the first cylindrical shaft 42 on the upstream side of conveyance, and a first one-way clutch 60 is provided across the connecting portion 42 a and the first drive shaft 41. When the first drive shaft 41 rotates in the direction in which the first drive shaft 41 conveys the grain, the first one-way clutch 60 is engaged with the clutch body provided on the first drive shaft 41 side and the clutch body provided on the connecting portion 42a side, The first cylinder shaft 42 is configured to rotate integrally with the first drive shaft 41, and when the first cylinder shaft 42 attempts to rotate relative to the first drive shaft 41 in the direction in which the grain is conveyed, The clutch body is disengaged and the first cylinder shaft 42 is allowed to rotate relative to the first drive shaft 41.

これにより、縦送りスクリュ１６からの動力により、ベベル伝達機構１９を介して第１駆動軸４１が回転すると、第１駆動軸４１に伝達された動力が第１ワンウェイクラッチ６０を介して第１筒軸４２に伝達されて、第１筒軸４２が第１駆動軸４１と一体回転するように構成されている。一方、第１駆動軸４１を停止した状態で、横オーガ９を伸長させて第１筒軸４２が第１駆動軸４１に対して穀粒を搬送する方向に相対回転しようとすると、クラッチ体の係合が解除し、第１駆動軸４１に対する第１筒軸４２の相対回転が許容されるように構成されている。   As a result, when the first drive shaft 41 is rotated via the bevel transmission mechanism 19 by the power from the vertical feed screw 16, the power transmitted to the first drive shaft 41 is transmitted through the first one-way clutch 60 to the first cylinder. The first cylindrical shaft 42 is configured to rotate integrally with the first drive shaft 41 by being transmitted to the shaft 42. On the other hand, with the first drive shaft 41 stopped, when the lateral auger 9 is extended and the first tube shaft 42 attempts to rotate relative to the first drive shaft 41 in the direction of conveying the grain, The engagement is released, and the relative rotation of the first cylinder shaft 42 with respect to the first drive shaft 41 is allowed.

第２スクリュ５０は、第２ケース２４の搬送上流側の端部に第２ワンウェイクラッチ６１を介して支持された第２筒軸５２と、この第２筒軸５２の外周部に第２筒軸５２の全長に亘って設けられた螺旋状の第２スクリュ羽根５３とを備えて構成されている。   The second screw 50 includes a second cylinder shaft 52 supported on the end of the second case 24 on the upstream side of the conveyance via the second one-way clutch 61, and a second cylinder shaft on the outer periphery of the second cylinder shaft 52. And a spiral second screw blade 53 provided over the entire length of 52.

第２搬送スクリュ２１の搬送下流側の端部に固定されたナット部材５６ｂには、搬送下流側に延出された筒状のクラッチ連結部５６ｃが一体成形されており、このクラッチ連結部５６ｃと第２筒軸５２の第２パイプ５２ｃとに亘って第２ワンウェイクラッチ６１が装備されている。ナット部材５６ｂには、全長に亘って六角穴が形成されており、このナット部材５６ｂに断面形状が六角形状の第２駆動軸５１が内嵌されて、ナット部材５６ｂが第２駆動軸５１と一体回動するように構成されている。   The nut member 56b fixed to the end of the second transport screw 21 on the downstream side of the transport is integrally formed with a cylindrical clutch coupling portion 56c extending to the downstream side of the transport. A second one-way clutch 61 is provided across the second pipe 52 c of the second cylinder shaft 52. The nut member 56 b is formed with a hexagonal hole over its entire length, and the second drive shaft 51 having a hexagonal cross section is fitted into the nut member 56 b, and the nut member 56 b is connected to the second drive shaft 51. It is configured to rotate integrally.

第２ワンウェイクラッチ６１は、第２駆動軸５１が穀粒を搬送する方向に回転すると、クラッチ連結部５６ｃ側に設けたクラッチ体と第２筒軸５２の第２パイプ５２ｃ側に設けたクラッチ体とが係合し、第２筒軸５２が第２駆動軸５１と一体回動するように構成されている。一方、第１駆動軸４１を停止した状態で、横オーガ９を短縮させて第２筒軸５２が第２駆動軸５１に対して穀粒を搬送する方向に相対回転しようとすると、クラッチ体の係合が解除し、第２駆動軸５１に対する第２筒軸５２の相対回転が許容されるように構成されている。   When the second drive shaft 51 rotates in the direction in which the grain is conveyed, the second one-way clutch 61 and the clutch body provided on the second pipe 52c side of the second cylinder shaft 52 are provided on the clutch connecting portion 56c side. And the second cylinder shaft 52 is configured to rotate integrally with the second drive shaft 51. On the other hand, when the first agitation shaft 41 is stopped and the lateral auger 9 is shortened and the second cylinder shaft 52 attempts to rotate relative to the second drive shaft 51 in the direction of conveying the grain, The engagement is released, and the relative rotation of the second cylinder shaft 52 with respect to the second drive shaft 51 is allowed.

伸縮機構３３を操作せずに第１駆動軸４１が穀粒を搬送する方向に回転すると、第１ワンウェイクラッチ６０を介して第１筒軸４２が回転し、第１スクリュ４０が穀粒を搬送する方向に回転する。そして、第１駆動軸４１の動力が第２駆動軸５１に伝達されて第２駆動軸５１が回転すると、第２ワンウェイクラッチ６１を介して第２筒軸５２が回転し、第２スクリュ５０が穀粒を搬送する方向に回転する。この場合、ナット部材５６ｂを介して第２搬送スクリュ２１も回転するため、第２搬送スクリュ２１も穀粒を搬送する方向に回転する。これにより、縦オーガ８によって上方に搬送されて横オーガ９の供給口９ａに供給された穀粒を、第１及び第２搬送スクリュ２０，２１によって横オーガ９先端の排出口９ｂに搬送できる。   When the first drive shaft 41 rotates in the direction in which the grain is conveyed without operating the telescopic mechanism 33, the first cylinder shaft 42 is rotated via the first one-way clutch 60, and the first screw 40 conveys the grain. Rotate in the direction you want. When the power of the first drive shaft 41 is transmitted to the second drive shaft 51 and the second drive shaft 51 rotates, the second cylinder shaft 52 rotates via the second one-way clutch 61, and the second screw 50 moves. Rotates in the direction of conveying the grain. In this case, since the 2nd conveyance screw 21 also rotates via the nut member 56b, the 2nd conveyance screw 21 also rotates in the direction which conveys a grain. Thereby, the grain conveyed upward by the vertical auger 8 and supplied to the supply port 9 a of the horizontal auger 9 can be conveyed to the discharge port 9 b at the tip of the horizontal auger 9 by the first and second conveying screws 20, 21.

第１駆動軸４１を停止した状態で、伸縮機構３３により第１及び第２ケース２３，２４を伸長させて第２ケース２４が第１ケース２３に対して搬送下流側にスライド移動すると、第１スクリュ４０の第１筒軸４２は、第１駆動軸４１に対して穀粒を排出口９ｂに搬送する方向に相対回転しようとする。そして、第１ワンウェイクラッチ６０の係合が解除し、第１駆動軸４１に対する第１筒軸４２の相対回転が許容され、第１搬送スクリュ２０が伸長し、横オーガ９が伸長する。この場合、第２スクリュ５０の第２筒軸５２は、第２駆動軸５１に対して穀粒を排出口９ｂに搬送する方向とは逆方向に相対回転しようとするが、第２ワンウェイクラッチ６１によりその回転が阻止される。   When the first and second cases 23 and 24 are extended by the expansion / contraction mechanism 33 with the first drive shaft 41 stopped, the second case 24 is slid to the transport downstream side with respect to the first case 23. The first cylinder shaft 42 of the screw 40 tends to rotate relative to the first drive shaft 41 in the direction in which the grain is conveyed to the discharge port 9b. Then, the engagement of the first one-way clutch 60 is released, the relative rotation of the first tube shaft 42 with respect to the first drive shaft 41 is allowed, the first transport screw 20 is extended, and the lateral auger 9 is extended. In this case, the second cylindrical shaft 52 of the second screw 50 attempts to rotate relative to the second drive shaft 51 in the direction opposite to the direction in which the grain is conveyed to the discharge port 9b. This prevents the rotation.

一方、第１駆動軸４１を停止した状態で、伸縮機構３３により第１及び第２ケース２３，２４を短縮させて第２ケース２４が第１ケース２３に対して搬送上流側にスライド移動すると、第２スクリュ５０の第２筒軸５２は、第２駆動軸５１に対して穀粒を排出口９ｂに搬送する方向に相対回転しようとする。そして、第２ワンウェイクラッチ６１の係合が解除し、第２駆動軸５１に対する第２筒軸５２の相対回転が許容され、第１搬送スクリュ２０が短縮し、横オーガ９が短縮する。この場合、第１スクリュ４０の第１筒軸４２は、第１駆動軸４１に対して穀粒を排出口９ｂに搬送する方向とは逆方向に相対回転しようとするが、第１ワンウェイクラッチ６０によりその回転が阻止される。   On the other hand, with the first drive shaft 41 stopped, the first and second cases 23 and 24 are shortened by the telescopic mechanism 33 so that the second case 24 slides and moves upstream of the first case 23, The second cylinder shaft 52 of the second screw 50 tends to rotate relative to the second drive shaft 51 in the direction in which the grain is conveyed to the discharge port 9b. Then, the engagement of the second one-way clutch 61 is released, the relative rotation of the second cylinder shaft 52 with respect to the second drive shaft 51 is allowed, the first conveying screw 20 is shortened, and the lateral auger 9 is shortened. In this case, the first cylindrical shaft 42 of the first screw 40 attempts to rotate relative to the first drive shaft 41 in the direction opposite to the direction in which the grain is conveyed to the discharge port 9b. This prevents the rotation.

上記のように第１搬送スクリュ２０を構成することで、第１及び第２ワンウェイクラッチ６０，６１によりベベル伝達機構１９からの動力を、無理なく第１及び第２スクリュ４０，５０に伝達して、穀粒を排出することができ、例えば上述の［発明を実施するための最良の形態］のように案内部材４５と案内溝４１ｂとの係合によりベベル伝達機構１９からの動力を第２スクリュ５０に伝達する場合や、例えばスクリュ羽根同士を接当させて搬送上流側のスクリュの動力を搬送下流側のスクリュに伝達する場合（図示せず）に比べ、案内部材４５、案内溝４１ｂ、スクリュ羽根等に、動力を伝達することによる無理な力が働き難くなって、これらの破損を防止できる。これにより、伸縮可能な第１搬送スクリュ２０（横オーガ９）を構成しながら、第１搬送スクリュ２０（横オーガ９）の耐久性を向上できる。   By configuring the first conveying screw 20 as described above, the first and second one-way clutches 60 and 61 transmit the power from the bevel transmission mechanism 19 to the first and second screws 40 and 50 without difficulty. The grain can be discharged, and the power from the bevel transmission mechanism 19 is supplied to the second screw by the engagement between the guide member 45 and the guide groove 41b, for example, as described above [Best Mode for Carrying Out the Invention]. Compared to the case where the screw blades are brought into contact with each other and the power of the screw on the upstream side of the transfer is transmitted to the screw on the downstream side of the transfer (not shown), for example, the guide member 45, the guide groove 41b, the screw Unreasonable force due to transmission of power to the blades or the like becomes difficult to work, and these breakage can be prevented. Thereby, durability of the 1st conveyance screw 20 (horizontal auger 9) can be improved, comprising the 1st conveyance screw 20 (horizontal auger 9) which can be expanded-contracted.

［発明の実施の第２別形態］
前述の［発明を実施するための最良の形態］及び［発明の実施の第１別形態］においては、第１搬送スクリュ２０に加えて、第２搬送スクリュ２１を備えた横オーガ９（穀粒排出オーガ）を例に示したが、第１搬送スクリュ２０のみによって横オーガ９を構成してもよい。また、１組の第１及び第２スクリュ４０，５０（１つの第１搬送スクリュ２０）を備えて、横オーガ９を構成した例を示したが、２組以上の第１及び第２スクリュ４０，５０（２つ以上の第１搬送スクリュ２０）を備えて、横オーガ９を構成してもよい。例えば２組の第１及び第２スクリュ４０，５０（２つの第１搬送スクリュ２０）を備えると、横オーガ９を伸縮する長さを２倍長く確保でき、横オーが９の伸縮ストロークが２倍長く確保できる。 [Second Embodiment of the Invention]
In the above-mentioned [Best Mode for Carrying Out the Invention] and [First Alternative Embodiment of the Invention], in addition to the first transport screw 20, the horizontal auger 9 (grains) provided with the second transport screw 21 Although the discharge auger) is shown as an example, the horizontal auger 9 may be constituted by only the first conveying screw 20. Moreover, although the example which comprised the 1st and 2nd screw 40,50 (one 1st conveying screw 20) and comprised the horizontal auger 9 was shown, the 1st and 2nd screw 40 of 2 or more sets was shown. , 50 (two or more first conveying screws 20), the horizontal auger 9 may be configured. For example, when two sets of the first and second screws 40 and 50 (two first conveying screws 20) are provided, the length for extending / contracting the horizontal auger 9 can be ensured twice as long, and the expansion / contraction stroke of 9 is horizontal lateral load. Can be secured twice as long.

前述の［発明を実施するための最良の形態］及び［発明の実施の第１別形態］においては、第１スクリュ４０を搬送上流側に配設し、第２スクリュ５０を搬送下流側に配設した例を示したが、第２スクリュ５０を搬送上流側に配設し、第１スクリュ４０を搬送下流側に配設してもよい。この場合、第１スクリュ４０の搬送下流側端部から第１及び第２スクリュ４０，５０を回転駆動する動力を入力するように構成してもよい。   In the above-mentioned [Best Mode for Carrying Out the Invention] and [First Alternative Embodiment of the Invention], the first screw 40 is disposed on the upstream side of the conveyance, and the second screw 50 is disposed on the downstream side of the conveyance. Although the provided example is shown, the second screw 50 may be disposed on the upstream side of the conveyance, and the first screw 40 may be disposed on the downstream side of the conveyance. In this case, you may comprise so that the power which rotationally drives the 1st and 2nd screws 40 and 50 may be input from the conveyance downstream end part of the 1st screw 40. FIG.

前述の［発明を実施するための最良の形態］及び［発明の実施の第１別形態］においては、伸縮可能な第１搬送スクリュ２０を搬送上流側に配設し、第２搬送スクリュ２１を搬送下流側に配設した例を示したが、伸縮可能な第１搬送スクリュ２０を搬送下流側に配設し、第２搬送スクリュ２１を搬送上流側に配設してもよい。   In the above-mentioned [Best Mode for Carrying Out the Invention] and [First Alternative Embodiment of the Invention], the extendable first transport screw 20 is arranged on the transport upstream side, and the second transport screw 21 is mounted. Although the example arrange | positioned in the conveyance downstream was shown, the 1st conveyance screw 20 which can be expanded-contracted may be arrange | positioned in the conveyance downstream, and the 2nd conveyance screw 21 may be arrange | positioned in the conveyance upstream.

前述の［発明を実施するための最良の形態］及び［発明の実施の第１別形態］においては、第１スクリュ羽根４３の搬送方向のスクリュピッチの略中間位置を第２スクリュ羽根５３が移動するように構成した例を示したが、穀粒が圧縮されることを防止でき、第２スクリュ羽根５３と第１スクリュ羽根４３との間に摩擦力が働き難い位置であれば、第１スクリュ羽根４３に対して第２スクリュ羽根５３が移動する位置は異なる位置であってもよく、例えば第１スクリュ羽根４３の搬送方向のスクリュピッチの中央部における異なる位置を第２スクリュ羽根５３が移動するように構成してもよい。   In the above-mentioned [Best Mode for Carrying Out the Invention] and [First Different Embodiment of the Invention], the second screw blade 53 moves at a substantially intermediate position of the screw pitch in the conveying direction of the first screw blade 43. Although the example which comprised was shown, if it is a position which can prevent that a grain is compressed and a frictional force does not work between the 2nd screw blade | wing 53 and the 1st screw blade | wing 43, it will be 1st screw. The position at which the second screw blade 53 moves with respect to the blade 43 may be different. For example, the second screw blade 53 moves at a different position in the center of the screw pitch in the transport direction of the first screw blade 43. You may comprise as follows.

［発明の実施の第３別形態］
前述の［発明を実施するための最良の形態］、［発明の実施の第１別形態］及び［発明の実施の第２別形態］においては、第２スクリュ５０の第２スクリュ羽根５３の搬送上流側端部の形状を、第２スクリュ羽根５３の羽根幅Ｗが第１スクリュ４０側に向かって徐々に先細り状に狭くなる形状に構成した例を示したが、第１スクリュ４０の第１スクリュ羽根４３の搬送下流側端部の形状を、第１スクリュ羽根４３の羽根幅Ｗが第２スクリュ５０側に向かって徐々に先細り状に狭くなる形状に構成してもよい。例えば、第１及び第２スクリュ羽根４３，５３の双方の先端部の羽根幅Ｗを徐々に狭くなる形状に構成することで、更に無理なく横オーガ９を伸縮できる。 [Third Another Embodiment of the Invention]
In the above-mentioned [Best Mode for Carrying Out the Invention], [First Alternative Embodiment of the Invention] and [Second Alternative Embodiment of the Invention], the second screw blade 53 of the second screw 50 is conveyed. Although the shape of the upstream end portion is shown as an example in which the blade width W of the second screw blade 53 is gradually tapered toward the first screw 40 side, the first screw 40 has a first shape. You may comprise the shape of the conveyance downstream side edge part of the screw blade 43 in the shape where the blade width W of the 1st screw blade 43 becomes a taper shape gradually narrows toward the 2nd screw 50 side. For example, the lateral auger 9 can be expanded and contracted more easily by configuring the blade width W of the tip portions of both the first and second screw blades 43 and 53 to be gradually narrowed.

前述の［発明を実施するための最良の形態］、［発明の実施の第１別形態］及び［発明の実施の第２別形態］においては、第２スクリュ羽根５３の外周端５３Ｃを、丸く湾曲した形状に構成した例を示したが、第２スクリュ羽根５３の外周端５３Ｃを屈曲した形状に構成してもよい。   In the above-mentioned [Best Mode for Carrying Out the Invention], [First Alternative Embodiment of the Invention] and [Second Alternative Embodiment of the Invention], the outer peripheral end 53C of the second screw blade 53 is rounded. Although an example of a curved shape is shown, the outer peripheral end 53C of the second screw blade 53 may be bent.

前述の［発明を実施するための最良の形態］、［発明の実施の第１別形態］及び［発明の実施の第２別形態］においては、第２スクリュ羽根５３の先端幅狭部５３Ａの羽根幅Ｗが周方向に約１８０度の範囲内で徐々に羽根幅Ｗが狭くなるように設定した例を示したが、第２スクリュ羽根５３の先端幅狭部５３Ａの羽根幅Ｗが狭くなる範囲を広く又は狭く設定してもよい。   In the above-mentioned [Best Mode for Carrying Out the Invention], [First Alternative Embodiment of the Invention] and [Second Alternative Embodiment of the Invention], the tip narrow portion 53A of the second screw blade 53 is formed. Although the example in which the blade width W is set to be gradually narrowed within the range of about 180 degrees in the circumferential direction has been shown, the blade width W of the tip narrow portion 53A of the second screw blade 53 is narrowed. The range may be set wide or narrow.

［発明の実施の第４別形態］
前述の［発明を実施するための最良の形態］、［発明の実施の第１別形態］、［発明の実施の第２別形態］及び［発明の実施の第３別形態］においては、第１駆動軸４１を停止した状態で、伸縮機構３３により第１及び第２ケース２３，２４を伸縮するように構成した例を示したが、第１駆動軸４１を駆動しながら、伸縮機構３３により第１及び第２ケース２３，２４を伸縮するように構成するように構成してもよい。 [Fourth Embodiment of the Invention]
In the aforementioned [Best Mode for Carrying Out the Invention], [First Alternative Embodiment of the Invention], [Second Alternative Embodiment of the Invention] and [Third Alternative Embodiment of the Invention] Although the example in which the first and second cases 23 and 24 are expanded and contracted by the expansion / contraction mechanism 33 with the one drive shaft 41 stopped is shown, the expansion / contraction mechanism 33 drives the first drive shaft 41. You may comprise so that the 1st and 2nd cases 23 and 24 may be expanded and contracted.

前述の［発明を実施するための最良の形態］、［発明の実施の第１別形態］、［発明の実施の第２別形態］及び［発明の実施の第３別形態］においては、伸縮機構３３をラック３２、ピニオンギア３７等を用いて構成した例を示したが、同様の機能を果たすものであれば異なる構造を採用してもよく、例えば送りネジ（図示せず）等を用いて伸縮機構３３を構成してもよい。   In the above-mentioned [Best Mode for Carrying Out the Invention], [First Different Embodiment of Invention], [Second Different Embodiment of Invention] and [Third Another Embodiment of Invention] Although an example in which the mechanism 33 is configured using the rack 32, the pinion gear 37, and the like has been shown, a different structure may be adopted as long as it performs the same function, for example, a feed screw (not shown) or the like is used. The telescopic mechanism 33 may be configured.

［発明の実施の第５別形態］
前述の［発明を実施するための最良の形態］、［発明の実施の第１別形態］、［発明の実施の第２別形態］、［発明の実施の第３別形態］及び［発明の実施の第４別形態］においては、コンバインの一例として自脱型コンバインを例に示したが、普通型コンバイン等の異なるコンバインにおいても同様に適用できる。 [Fifth Embodiment of the Invention]
[Best Mode for Carrying Out the Invention], [First Alternative Embodiment of the Invention], [Second Alternative Embodiment of the Invention], [Third Alternative Embodiment of the Invention] and [Invention of the Invention] In the fourth embodiment, the self-removing combine is shown as an example of a combine. However, the present invention can be similarly applied to a different combine such as a normal combine.

コンバインの全体側面図Combine side view コンバインの全体平面図Overall plan view of combine 横オーガの全体構造を示す縦断面図Longitudinal section showing the overall structure of the horizontal auger 横オーガを伸長させた状態における図３のＡの位置での縦断面図3 is a longitudinal sectional view at the position A in FIG. 3 in a state where the horizontal auger is extended. 横オーガを伸長させた状態における図３のＢの位置での縦断面図3 is a longitudinal sectional view at the position B in FIG. 3 in a state where the horizontal auger is extended. 横オーガを伸長させた状態における図３のＣの位置での縦断面図3 is a longitudinal sectional view at the position C in FIG. 3 in a state where the horizontal auger is extended. 横オーガを短縮させた状態における図３のＤの位置での縦断面図3 is a longitudinal sectional view at the position D in FIG. 3 in a state where the horizontal auger is shortened. 横オーガを短縮させた状態における図３のＥの位置での縦断面図Longitudinal sectional view at position E in FIG. 3 with the horizontal auger shortened 伸縮機構の構造を示す図８のＩＸ―ＩＸの位置での縦断面図Vertical sectional view at the position of IX-IX in FIG. 8 showing the structure of the telescopic mechanism 第２スクリュ羽根の先端部の形状を説明する詳細図Detailed view explaining the shape of the tip of the second screw blade 案内部材付近の構造を示す縦断面図Longitudinal sectional view showing the structure near the guide member 案内部材付近の構造を示す詳細図Detailed view showing the structure near the guide member 発明の実施の第１別形態における第１搬送スクリュ付近の縦断面図Longitudinal sectional view of the vicinity of the first conveying screw in the first alternative embodiment of the invention

符号の説明Explanation of symbols

９ 横オーガ（穀粒排出オーガ）
９ａ 供給口
９ｂ 排出口
２３ 第１ケース
２４ 第２ケース
３３ 伸縮機構
４０ 第１スクリュ
４３ 第１スクリュ羽根
５０ 第２スクリュ
５３ 第２スクリュ羽根
５３Ａ 先端幅狭部（第２スクリュ羽根の第１スクリュ側の先端部）
Ｗ 羽根幅 9 Horizontal auger (grain discharge auger)
9a Supply port 9b Discharge port 23 1st case 24 2nd case 33 Telescopic mechanism 40 1st screw 43 1st screw blade 50 2nd screw 53 2nd screw blade 53A Tip narrow part (the 1st screw side of the 2nd screw blade) Tip)
W feather width

Claims (2)

円筒状の第１ケースと、前記第１ケースに対してスライド移動可能に構成した円筒状の第２ケースと、前記第１ケースと前記第２ケースとに亘って設けられた伸縮機構とを備え、前記第１及び第２ケースの内部に、直列に接続された第１及び第２スクリュを備えて、前記第１スクリュの第１スクリュ羽根の巻き方向と前記第２スクリュの第２スクリュ羽根の巻き方向とを同じ巻き方向に設定し、前記第１ケースの搬送上流側の端部に位置する供給口から前記第２ケースの搬送下流側の端部に位置する排出口に向かって穀粒を搬送可能で、かつ、伸縮可能に構成してあるコンバインの穀粒排出オーガにおいて、
前記伸縮機構により前記第１及び第２ケースを短縮させると、前記第２スクリュ羽根が互いに隣接する前記第１スクリュ羽根の間を相対回転しながら入り込んで、前記第２スクリュが前記第１スクリュと重なり合いながら前記第１スクリュ側に移動するように構成すると共に、
前記第２スクリュ羽根の前記第１スクリュ側の先端部を、前記第２スクリュ羽根の羽根幅が前記第１スクリュ側に向かって徐々に狭くなる形状に構成してあるコンバインの穀粒排出オーガ。 A cylindrical first case; a cylindrical second case configured to be slidable with respect to the first case; and an expansion / contraction mechanism provided across the first case and the second case. In the first and second cases, first and second screws connected in series are provided, and the winding direction of the first screw blade of the first screw and the second screw blade of the second screw are provided. The winding direction is set to the same winding direction, and the grain is directed from the supply port located at the transport upstream end of the first case toward the discharge port located at the transport downstream end of the second case. In a combine grain discharge auger that is transportable and stretchable,
When the first and second cases are shortened by the telescopic mechanism, the second screw blade enters between the first screw blades adjacent to each other while rotating relative to each other, and the second screw is connected to the first screw. While configured to move to the first screw side while overlapping,
A combine grain discharge auger in which a tip end portion of the second screw blade on the first screw side is formed in a shape in which a blade width of the second screw blade is gradually narrowed toward the first screw side. 前記第２スクリュ羽根の前記第１スクリュ側の先端部における外周端の形状を、滑らかに湾曲した形状に構成してある請求項１記載のコンバインの穀粒排出オーガ。   The combine grain discharge auger according to claim 1, wherein the shape of the outer peripheral end of the second screw blade at the first screw side tip is smoothly curved.
JP2007332482A 2007-12-25 2007-12-25 Grain discharging auger of combine harvester Pending JP2009153407A (en)

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