JP4903589B2 - Combine grain discharge auger - Google Patents

Combine grain discharge auger Download PDF

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JP4903589B2
JP4903589B2 JP2007006018A JP2007006018A JP4903589B2 JP 4903589 B2 JP4903589 B2 JP 4903589B2 JP 2007006018 A JP2007006018 A JP 2007006018A JP 2007006018 A JP2007006018 A JP 2007006018A JP 4903589 B2 JP4903589 B2 JP 4903589B2
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screw
guide member
case
shaft
guide groove
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JP2008167716A (en
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如一 田中
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Kubota Corp
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本発明は、伸縮機構を備えて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 and configured to be expandable / contractible.

従来の技術としては、例えば特許文献１に開示されているコンバインの穀粒排出オーガが知られている。特許文献１に開示されている従来の穀粒排出オーガにおいては、縦オーガと連動連結された翼体回転手段（特許文献１の図２の６０）によって、軸付螺旋翼体（特許文献１の図２の３４）を回動駆動させるとともに、モーター（特許文献１の図２の６４）を正逆転させることによって、駆動軸（特許文献１の図２の６５）及び差動歯車機構（特許文献１の図２の６２）を介して軸無螺旋翼体（特許文献１の図２の３１）を軸付螺旋翼体と異なる回転数で回動駆動させて、軸付螺旋翼体及び軸無螺旋翼体の回転数の差を利用して軸付螺旋翼体に対して軸無螺旋翼体を移動させることによって穀粒排出オーガが伸縮するように構成されている。また、軸付螺旋翼体に対して軸無螺旋翼体を移動させると、軸付螺旋翼体カバー（特許文献１の図２の３６）に対して軸無螺旋翼体カバー（特許文献１の図２の３７）が移動して、軸付螺旋翼体カバー及び軸無螺旋翼体カバーが伸縮するように構成されている。   As a conventional technique, for example, a combine grain discharging auger disclosed in Patent Document 1 is known. In the conventional grain discharge auger disclosed in Patent Document 1, a spiral wing body with a shaft (Patent Document 1 of Patent Document 1) is obtained by a blade rotating means (60 in FIG. 2 of Patent Document 1) interlocked with the vertical auger. 2 is rotated and the motor (64 in FIG. 2 in Patent Document 1) is rotated forward and backward to drive the drive shaft (65 in FIG. 2 in Patent Document 1) and the differential gear mechanism (Patent Document). 2 of FIG. 2 of FIG. 1 is rotated at a rotational speed different from that of the spiral wing body with a shaft through the shaft-less spiral wing body (31 of FIG. 2 of Patent Document 1). The grain discharge auger is configured to expand and contract by moving the shaftless spiral blade relative to the shafted spiral blade using the difference in the rotational speed of the spiral blade. Further, when the shaftless spiral blade body is moved relative to the shafted spiral blade body, the shaftless spiral blade body cover (Patent Document 1 of FIG. 37) of FIG. 2 moves, and the spiral wing body cover with shaft and the non-spiral wing body cover are configured to expand and contract.

特開２００２−１８６３４５号公報（図２〜図５及び図１４参照）JP 2002-186345 A (see FIGS. 2 to 5 and FIG. 14)

特許文献１に開示されている従来のコンバインの穀粒排出オーガにおいては、軸付螺旋翼体及び軸無螺旋翼体（特許文献１の図２の３１及び３４）をそれぞれ異なる回転数で回動駆動させるために、差動歯車機構（特許文献１の図２の６２）等を穀粒排出オーガの先端部に設ける必要があった。そのため、穀粒排出オーガの構造が複雑になって部品点数が多くなり製造コストアップの一因になるといった問題や、穀粒排出オーガ（特に、差動歯車機構を設けた先端部）の重量が重くなって、穀粒排出オーガの旋回部等に無理な曲げモーメントが働き易いといった問題があった。
本発明は、耐久性に優れ、かつ伸縮可能なコンバインの穀粒排出オーガを低コストで実現することを目的とする。 In the conventional combine grain discharging auger disclosed in Patent Document 1, a spiral wing body with shaft and a non-spiral wing body (31 and 34 in FIG. 2 of Patent Document 1) are rotated at different rotational speeds. In order to drive, it was necessary to provide a differential gear mechanism (62 in FIG. 2 of Patent Document 1) and the like at the tip of the grain discharge auger. For this reason, the structure of the grain discharge auger becomes complicated, which increases the number of parts and contributes to an increase in manufacturing cost, and the weight of the grain discharge auger (particularly, the tip portion provided with the differential gear mechanism) There is a problem that an excessive bending moment is easily applied to the turning portion of the grain discharge auger.
An object of the present invention is to realize a combine grain discharge auger that is excellent in durability and stretchable at low cost.

（構成）
本発明の第１特徴は、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、搬送上流側に位置する第１スクリュと搬送下流側に位置する第２スクリュとを備えて、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て、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ケースを伸縮させると、前記第２スクリュを前記第１スクリュと重なり合いながら前記第１スクリュに対してスライド移動させるスライド機構を備え、
前記スライド機構を、前記第１又は第２スクリュの一方に設けられた螺旋状の案内溝と、前記第１又は第２スクリュの他方に設けられた案内部材とを備え、前記案内溝に前記案内部材を係合させて構成し、
前記案内部材を、前記第１又は第２スクリュの一方に備えられた軸と前記軸に外嵌するように前記第１又は第２スクリュの他方に備えられた筒軸とに亘る状態で前記軸と前記筒軸との間に内装してある。
( Configuration)
The first feature of the present invention includes a cylindrical first case, a cylindrical second case configured to be slidable with respect to the first case, and the first case and the second case. A first screw located on the upstream side of the transport and a second screw located on the downstream side of the transport inside the first and second cases, and a first screw of the first screw. The winding direction of one screw blade and the winding direction of the second screw blade of the second screw are set to the same winding direction, and the second case is supplied from a supply port located at the upstream end of the first case. In the grain discharge auger of the combine that is configured to be able to convey the grain toward the discharge port located at the end portion on the downstream side of the conveyance and to be stretchable ,
When the first and second cases are expanded and contracted by the expansion and contraction mechanism, a slide mechanism is provided that slides the second screw relative to the first screw while overlapping the first screw.
The slide mechanism includes a spiral guide groove provided on one of the first or second screw and a guide member provided on the other of the first or second screw, and the guide groove is provided with the guide. It is configured by engaging the members ,
The shaft in a state in which the guide member extends over a shaft provided on one of the first or second screw and a cylindrical shaft provided on the other of the first or second screw so as to be fitted on the shaft. And the cylinder shaft.

（作用）
本発明の第１特徴によると、第１及び第２スクリュを回動駆動させなくても、伸縮機構により第１及び第２ケースを伸縮させると、スライド機構によって第２スクリュが第１スクリュと重なり合いながら第１スクリュに対してスライド移動し、穀粒排出オーガを伸縮することができる。その結果、穀粒排出オーガを伸縮させる構造を簡素化できる。 (Function)
According to the first feature of the present invention, when the first and second cases are expanded and contracted by the expansion / contraction mechanism without the first and second screws being driven to rotate, the second screw overlaps the first screw by the slide mechanism. While sliding with respect to the first screw, the grain discharge auger can be expanded and contracted. As a result, the structure for expanding and contracting the grain discharge auger can be simplified.

具体的には、例えば特許文献１における軸無螺旋翼体（特許文献１の図２の３１）を軸付螺旋翼体（特許文献１の図２の３４）と異なる回転数で回動駆動させるための駆動軸（特許文献１の図２の６５）及び差動歯車機構（特許文献１の図２の６２）に代えて、第１ケースと第２ケースとに亘る伸縮機構（例えば、図３の３３）及びスライド機構（例えば、図３の４０，４１等）によって穀粒排出オーガを伸縮することができるため、特許文献１の構造に比べて、穀粒排出オーガを伸縮させる構造を簡素化できる。   Specifically, for example, the shaft-free spiral wing body in Patent Document 1 (31 in FIG. 2 of Patent Document 1) is rotationally driven at a different rotational speed from the shaft-equipped spiral wing body (34 in FIG. 2 in Patent Document 1). In place of the drive shaft (65 in FIG. 2 of Patent Document 1) and the differential gear mechanism (62 in FIG. 2 of Patent Document 1), a telescopic mechanism (for example, FIG. 3) spans the first case and the second case. 33) and a slide mechanism (for example, 40, 41 in FIG. 3) can expand and contract the grain discharge auger, and therefore, the structure for expanding and contracting the grain discharge auger is simplified compared to the structure of Patent Document 1. it can.

本発明の第１特徴によると、スライド機構を、案内溝と案内部材とを備え、案内溝に案内部材を係合させて構成することにより、例えば穀粒排出オーガを伸縮させる場合には、螺旋状の案内溝に沿って案内部材を移動させることができ、案内溝とこれに入り込む案内部材の係合作用によってスライド機構を確実に作動させることができる。また、例えば穀粒を排出する場合には案内溝とこれに入り込む案内部材の係合作用によって第１及び第２スクリュを連動させることができる。   According to the first feature of the present invention, the slide mechanism includes a guide groove and a guide member, and is configured by engaging the guide member with the guide groove. The guide member can be moved along the guide groove, and the slide mechanism can be reliably operated by the engaging action of the guide groove and the guide member entering the guide groove. Further, for example, when discharging the grain, the first and second screws can be interlocked by the engaging action of the guide groove and the guide member that enters the guide groove.

（発明の効果）
本発明の第１特徴によると、穀粒排出オーガを伸縮させる構造を簡素化できるため、部品点数が少なくなって製造コストを削減することができる。また、穀粒排出オーガを伸縮させる構造を簡素化できる結果として、穀粒排出オーガの重量を軽減できるため、穀粒排出オーガの旋回部等に無理な曲げモーメントが働き難くなって、耐久性に優れた穀粒排出オーガを実現できる。 (The invention's effect)
According to the 1st characteristic of this invention, since the structure which expands and contracts a grain discharge auger can be simplified, a number of parts can decrease and manufacturing cost can be reduced. In addition, as a result of simplifying the structure for expanding and contracting the grain discharge auger, the weight of the grain discharge auger can be reduced, so that an excessive bending moment does not work easily on the turning part of the grain discharge auger and the durability is improved. An excellent grain discharge auger can be realized.

本発明の第１特徴によると、スライド機構を確実に作動させることができるため、穀粒排出オーガの伸縮作動の安定性及び信頼性を向上できる。また、第１及び第２スクリュを連動させることができるため、第１及び第２スクリュを回動駆動する構造を簡素化でき、穀粒排出オーガの製造コストを削減できる。   According to the 1st characteristic of this invention, since a slide mechanism can be operated reliably, stability and reliability of the expansion-contraction operation | movement of a grain discharge auger can be improved. Moreover, since the 1st and 2nd screw can be made to interlock | cooperate, the structure which rotationally drives the 1st and 2nd screw can be simplified, and the manufacturing cost of a grain discharge auger can be reduced.

（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、
前記軸の外周部に前記案内溝を形成し、前記筒軸の内周面に案内部材取付部を凹入形成してある。
（構成）
本発明の第３特徴は、本発明の第２特徴のコンバインの穀粒排出オーガにおいて、
前記案内部材取付部を、前記案内部材取付部に係入する前記案内部材の本体部分が前記筒軸の内周面から突出しない深さを有するように形成してある。
（構成）
本発明の第４特徴は、本発明の第１〜第３特徴のいずれか一つのコンバインの穀粒排出オーガにおいて、
前記案内溝に係合する前記案内部材の係合部を前記案内溝に沿う方向に細長い長円形に形成してある。
（構成）
本発明の第５特徴は、本発明の第１〜第４特徴のいずれか一つのコンバインの穀粒排出オーガにおいて、
前記案内部材の本体部分を前記案内溝に係合する前記案内部材の係合部よりも前記案内溝に沿って前記案内部材が移動する方向と直交する方向での長さが大きくなるように前記案内部材を構成してある。
( Configuration)
The second feature of the present invention is the combine grain discharging auger of the first feature of the present invention,
The guide groove is formed in the outer peripheral portion of the shaft, and the guide member mounting portion is recessed in the inner peripheral surface of the cylindrical shaft.
(Constitution)
The third feature of the present invention is the combine grain discharge auger of the second feature of the present invention,
The guide member mounting portion is formed such that a main body portion of the guide member engaged with the guide member mounting portion has a depth that does not protrude from the inner peripheral surface of the cylindrical shaft.
(Constitution)
The fourth feature of the present invention is the combine grain discharge auger of any one of the first to third features of the present invention,
The engaging portion of the guide member that engages with the guide groove is formed in an elongated oval shape in a direction along the guide groove.
(Constitution)
The fifth feature of the present invention is the combine grain discharge auger of any one of the first to fourth features of the present invention,
The length in a direction orthogonal to the direction in which the guide member moves along the guide groove is larger than the engaging portion of the guide member that engages the main body portion of the guide member with the guide groove. A guide member is formed.

（構成）
本発明の第６特徴は、本発明の第１〜第５特徴のいずれか一つのコンバインの穀粒排出オーガにおいて、
断面形状が矩形状になるように、前記案内溝を構成するとともに、前記案内溝に沿って前記案内部材が移動する方向に直交する方向での前記案内溝に係合する係合部の断面形状が矩形状になるように、前記案内部材を構成し、
前記案内部材を前記第１又は第２スクリュの径方向に沿う軸心周りに回動自在に支持してある。
（作用）
本発明の第６特徴によると、螺旋状の案内溝に沿って案内部材が移動する際に、回動自在に支持した案内部材が自ら回転することで、矩形状に形成した案内溝と矩形状に形成した案内部材の係合部の係合がロックされることが少なくなって、案内溝に沿って案内部材を無理なく移動させることができる。その結果、無理なくスライド移動させることのできるスライド機構を構成することができ、穀粒排出オーガを無理なく伸縮することができる。
 (Constitution)
The sixth feature of the present invention is the combine grain discharge auger of any one of the first to fifth features of the present invention,
The guide groove is configured to have a rectangular cross-sectional shape, and the cross-sectional shape of the engaging portion that engages with the guide groove in a direction orthogonal to the direction in which the guide member moves along the guide groove. The guide member is configured so that is rectangular.
The guide member is rotatably supported around an axis along the radial direction of the first or second screw.
(Function)
According to the sixth aspect of the present invention, when the guide member moves along the spiral guide groove, the guide member supported to rotate freely rotates, so that the guide groove and the rectangular shape are formed in a rectangular shape. The engagement of the engaging portion of the guide member formed in the step is less locked, and the guide member can be moved without difficulty along the guide groove. As a result, a slide mechanism that can be slid and moved without difficulty can be configured, and the grain discharge auger can be expanded and contracted without difficulty.

（発明の効果）
本発明の第６特徴によると、破損し難く耐久性に優れたスライド機構及び穀粒排出オーガを実現できる。
(The invention's effect)
According to the sixth aspect of the present invention, it is possible to realize a slide mechanism and a grain discharge auger that are not easily damaged and have excellent durability.

〔コンバインの全体構成〕
図１及び図２に本発明に係る穀粒排出オーガを備えた自脱型コンバインを示す。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。 [Overall structure of the combine]
FIG.1 and FIG.2 shows the self-decomposing combine provided with the grain discharge auger according to the present invention. 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（穀粒排出オーガに相当）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を起立させた上で、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 grain upward from a discharge screw 11 at the lower part of the Glen tank 6 and a horizontal auger 9 that discharges the grain from the upper part of the vertical auger 8 to a truck bed (not shown). The lower case below the vertical auger 8 after the unloader 7 is erected by operating a hydraulic cylinder 12 provided between the vertical auger 8 and the horizontal auger 9. The unloader 7 can be swung by rotating the swivel motor 13 provided at 14.

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の駆動軸４２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、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搬送スクリュ２０、第２搬送スクリュ２１及び第３搬送スクリュ２２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 drive shaft 42 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 rotates from an engine (not shown) via the transmission case (not shown) located between the Glen tank 6 and the threshing part 5. Then, the vertical feed screw 16 is rotated via the bevel transmission mechanism 17, and further, the first conveyance screw 20, the second conveyance screw 21 and the third conveyance screw 22 are rotated via the bevel transmission mechanism 19. It is configured.

以上の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搬送スクリュ２０、第２搬送スクリュ２１及び第３搬送スクリュ２２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 comprising as mentioned above, the grain stored in the glen tank 6 is conveyed back to the machine body by the discharge screw 11, conveyed upward by the vertical auger 8, and supplied to the supply port 9a 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 transfer screw 20, the second transfer screw 21 and the third transfer screw 22 provided inside the auger 9, and the loading platform of the truck etc. ( The unloader 7 is configured so that the grain can be discharged to a not shown.

〔横オーガ（穀粒排出オーガに相当）の構造〕
図３〜図１１に横オーガ９の詳細構造を示す。図３は、横オーガ９の全体図を示す。図３（イ）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を示し、図３（ロ）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を示す。また、図４〜図７は、図３（イ）の状態でのＡ〜Ｄの位置における横オーガ９の詳細縦断面図をそれぞれ示し、図８〜図１０は、図３（ロ）の状態でのＥ〜Ｇの位置における横オーガ９の詳細縦断面図をそれぞれ示す。なお、図１１は、図１０のＸ―Ｘ断面図を示す。 [Structure of horizontal auger (equivalent to grain discharge auger)]
3 to 11 show the detailed structure of the horizontal auger 9. FIG. 3 shows an overall view of the horizontal auger 9. FIG. 3 (a) shows a longitudinal sectional view in the grain conveying direction of the horizontal auger 9 in the most extended state, and FIG. 3 (b) shows the grain conveying direction of the horizontal auger 9 in the most shortened state. The longitudinal cross-sectional view in is shown. 4 to 7 show detailed longitudinal sectional views of the horizontal auger 9 at positions A to D in the state of FIG. 3 (a), respectively, and FIGS. 8 to 10 show the state of FIG. 3 (b). The detailed vertical sectional view of the horizontal auger 9 in the position of EG in FIG. FIG. 11 is a cross-sectional view taken along the line XX 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第２ケース２４と、第１ケース２３及び第２ケース２４の内部に設けられた第１搬送スクリュ２０、第２搬送スクリュ２１、第３搬送スクリュ２２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 second case 24 fitted in a slidable manner, and a first transport screw 20, a second transport screw 21, a third transport screw 22 and the like provided in the first case 23 and the second case 24 are configured. Has been.

図６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. 6, a cylindrical sleeve 25 is fixed to the outer peripheral portion of the upstream end of the second case 24 in a state of being fitted around 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 collars 28 and 29 provided on the outer periphery thereof, so that the second case 24 slides in the telescopic direction with respect to the first case 23 without difficulty. It is configured.

図６及び図１１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。なお、ブラケット３０は第１ケース２３に対する第２ケース２４の伸縮方向の最も短縮した位置を規制するストッパとしても機能するように構成されている（図１０参照）。   As shown in FIGS. 6 and 11, a pair of brackets 30 are fixed to the lower side of the conveyance downstream end portion of the first case 23, and the rollers 31 are rotatable in 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. The bracket 30 is also configured to function as a stopper that regulates the position where the second case 24 is shortened in the expansion / contraction direction with respect to the first case 23 (see FIG. 10).

一方、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。   On the other hand, 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. .

図７に示すように、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が配設されており、後述する第１搬送スクリュ２０、第２搬送スクリュ２１、第３搬送スクリュ２２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。   As shown in FIG. 7, a discharge port 9 b opened downward is disposed at the end of the second case 24 on the downstream side of conveyance, and a first conveyance screw 20, a second conveyance screw 21, which will be described later, It is comprised so that the grain conveyed by the 3rd conveyance screw 22 can be discharged | emitted below from this discharge port 9b.

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４１とを備えて構成されている。   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 41 positioned on the transport downstream side of the first screw 40. It is configured with.

駆動軸４２は、断面形状が正六角形の棒材によって形成されており、アッパケース１８の内部に設けたベベル伝達機構１９を介して縦オーガ８の縦送りスクリュ１６に連動連結されて、その搬送上流側の端部が連結筒軸３８を介してベベル伝達機構１９に設けたベアリング４３に回動自在に支持され、他端部は後述する第２ケース２４の内部に設けた第３搬送スクリュ２２の第３筒軸５６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（図６参照）。   The drive shaft 42 is formed of a rod having a regular hexagonal cross-sectional shape, and is linked to the longitudinal feed screw 16 of the longitudinal auger 8 via a bevel transmission mechanism 19 provided in the upper case 18 to convey the drive shaft 42. An upstream end is rotatably supported by a bearing 43 provided in the bevel transmission mechanism 19 via a connecting cylinder shaft 38, and the other end is a third transport screw 22 provided in a second case 24 described later. Is supported by a nut member 56b at the upstream end of the third cylinder shaft 56 so as to be slidable in the telescopic direction (see FIG. 6).

第１搬送スクリュ２０を構成する第１スクリュ４０は、第１ケース２３の搬送上流側の端部にすべり軸受４４を介して駆動軸４２に対して相対回転自在に支持された第１筒軸４５と、この第１筒軸４５の外周部に第１筒軸４５の全長に亘って設けられた螺旋状の第１スクリュ羽根４６とを備えて構成されている。第１筒軸４５は、搬送上流側に位置する第１パイプ４５ａと、この第１パイプ４５ａの搬送下流側に位置し第１パイプ４５ａより小径の第２パイプ４５ｂと、この第２パイプ４５ｂの搬送下流側に位置し第２パイプ４５ｂよりやや外径の大きい筒状部材４５ｃとによって構成されており、外径の大きい第１パイプ４５ａの部分に第１スクリュ羽根４６の搬送上流側の端部が固着されており、外径の小さい第２パイプ４５ｂ及び筒状部材４５ｃの部分に位置する第１スクリュ羽根４６は、第２パイプ４５ｂ及び筒状部材４５ｃと一定の隙間を開けて巻き付けられている。   The first screw 40 constituting the first transport screw 20 is supported at the end of the first case 23 on the transport upstream side by a slide bearing 44 so as to be relatively rotatable with respect to the drive shaft 42. And a helical first screw blade 46 provided over the entire length of the first tube shaft 45 on the outer periphery of the first tube shaft 45. The first cylinder shaft 45 includes a first pipe 45a located on the upstream side of the conveyance, a second pipe 45b located on the conveyance downstream side of the first pipe 45a and having a smaller diameter than the first pipe 45a, and the second pipe 45b. An end portion of the first screw blade 46 on the upstream side of the first pipe blade 46a is formed by a cylindrical member 45c located on the downstream side of the conveyance and having a slightly larger outer diameter than the second pipe 45b. Is fixed, and the first screw blades 46 located in the portions of the second pipe 45b and the cylindrical member 45c having a small outer diameter are wound around the second pipe 45b and the cylindrical member 45c with a certain gap therebetween. Yes.

第１搬送スクリュ２０を構成する第２スクリュ４１は、駆動軸４２と一体回動可能で、駆動軸４２に対して伸縮方向にスライド自在な中間軸４７と、この中間軸４７の外周部から一定の隙間を開けて設けた中間軸４７と同心状の第２筒軸４８と、この第２筒軸４８の外周部に全長に亘って固着された螺旋状の第２スクリュ羽根４９とを備えて構成されている。   The second screw 41 constituting the first conveying screw 20 can rotate integrally with the drive shaft 42 and is slidable in the expansion / contraction direction with respect to the drive shaft 42, and is fixed from the outer peripheral portion of the intermediate shaft 47. And a second cylindrical shaft 48 concentric with the intermediate shaft 47 provided with a gap therebetween, and a helical second screw blade 49 fixed to the outer peripheral portion of the second cylindrical shaft 48 over the entire length. It is configured.

中間軸４７は、円筒状に形成されており、その搬送下流側の端部には六角穴が加工されたナット部材４７ａが固着されている。中間軸４７に固着したナット部材４７ａの六角穴に駆動軸４２を内嵌することで、中間軸４７が駆動軸４２と一体回動し、中間軸４７が駆動軸４２に対して伸縮方向にスライド移動するように構成されている。   The intermediate shaft 47 is formed in a cylindrical shape, and a nut member 47a in which a hexagonal hole is machined is fixed to an end portion on the downstream side of the conveyance. By inserting the drive shaft 42 into the hexagonal hole of the nut member 47 a fixed to the intermediate shaft 47, the intermediate shaft 47 rotates together with the drive shaft 42, and the intermediate shaft 47 slides in the telescopic direction with respect to the drive shaft 42. Is configured to move.

第２筒軸４８は連結ボルト５０によって中間軸４７と一体回動可能に連結されており、駆動軸４２に対して中間軸４７が回動すると第２筒軸４８も一体回動し、駆動軸４２に対して中間軸４７が伸縮方向に移動すると第２筒軸４８も伸縮方向にスライド移動するように構成されている。   The second cylinder shaft 48 is connected to the intermediate shaft 47 by the connecting bolt 50 so as to be integrally rotatable. When the intermediate shaft 47 is rotated with respect to the drive shaft 42, the second cylinder shaft 48 is also integrally rotated. When the intermediate shaft 47 moves in the expansion / contraction direction with respect to 42, the second cylinder shaft 48 slides in the expansion / contraction direction.

上述した第１筒軸４５は、第１筒軸４５の筒状部材４５ｃが第２スクリュ４１の中間軸４７に外嵌され、かつ、第１筒軸４５の筒状部材４５ｃが第２筒軸４８に内嵌された状態で、第２スクリュ４１の中間軸４７と第２筒軸４８との間に嵌合されている。   In the first cylinder shaft 45 described above, the cylindrical member 45c of the first cylinder shaft 45 is fitted on the intermediate shaft 47 of the second screw 41, and the cylindrical member 45c of the first cylinder shaft 45 is the second cylinder shaft. In a state of being fitted into the ring 48, it is fitted between the intermediate shaft 47 of the second screw 41 and the second cylinder shaft 48.

中間軸４７の外周部には、断面形状が矩形状の案内溝４７ｂが螺旋状に伸縮方向の両端部に亘って形成され、第１筒軸４５の筒状部材４５ｃには案内部材取付部４５ｄが形成されており、この案内溝４７ｂと案内部材取付部４５ｄとに亘ってコマ状の案内部材５１を取り付けた状態で、第１筒軸４５の筒状部材４５ｃが第２スクリュ４１の中間軸４７と第２筒軸４８との間に嵌め込まれている。   A guide groove 47b having a rectangular cross-sectional shape is formed on the outer peripheral portion of the intermediate shaft 47 in a spiral manner across both ends in the expansion / contraction direction, and a guide member mounting portion 45d is provided on the cylindrical member 45c of the first cylindrical shaft 45. The cylindrical member 45c of the first cylindrical shaft 45 is the intermediate shaft of the second screw 41 in a state where the frame-shaped guide member 51 is mounted across the guide groove 47b and the guide member mounting portion 45d. 47 and the second cylinder shaft 48 are fitted.

図１２〜図１４に基づいて、案内溝４７ｂ、案内部材５１及び案内部材取付部４５ｄの詳細構造について説明する。図１２は、穀粒の搬送方向での詳細縦断面図を示し、図１３（イ）及び（ロ）は、穀粒の搬送方向に直交する方向での詳細縦断面図、及び案内部材５１と案内溝４７ｂの位置関係を示す穀粒の搬送方向での詳細横断面図をそれぞれ示す。また、図１４は、案内部材５１の部品図を示し、図１４の上方及び下方に示す図は、案内部材５１の側面図及び底面図をそれぞれ示す。なお、図１２は、横オーガ９を短縮させた図３（ロ）の状態での第１搬送スクリュ２０と第２搬送スクリュ２１との連結部を示す。   Based on FIGS. 12-14, the detailed structure of the guide groove 47b, the guide member 51, and the guide member attaching part 45d is demonstrated. FIG. 12 shows a detailed longitudinal sectional view in the grain conveying direction, and FIGS. 13A and 13B are a detailed longitudinal sectional view in a direction orthogonal to the grain conveying direction, and a guide member 51. The detailed cross-sectional view in the conveyance direction of the grain which shows the positional relationship of the guide groove 47b is each shown. FIG. 14 is a component diagram of the guide member 51, and the upper and lower views of FIG. 14 show a side view and a bottom view of the guide member 51, respectively. FIG. 12 shows a connecting portion between the first transport screw 20 and the second transport screw 21 in the state of FIG.

図１２及び図１３に示すように、第１筒軸４５の筒状部材４５ｃの内周面から円柱状に凹入する案内部材取付部４５ｄが形成されている。案内部材取付部４５ｄの内径は、後述する案内部材５１の本体部分５１ａの外径より少し大きめに加工されており、案内部材５１を案内部材取付部４５ｄに取り付けた状態で、案内部材５１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。   As shown in FIGS. 12 and 13, a guide member mounting portion 45 d that is recessed in a columnar shape from the inner peripheral surface of the cylindrical member 45 c of the first cylindrical shaft 45 is formed. An inner diameter of the guide member mounting portion 45d is processed to be slightly larger than an outer diameter of a main body portion 51a of the guide member 51 described later, and the guide member 51 is pivoted in a state where the guide member 51 is mounted on the guide member mounting portion 45d. It is configured to rotate around the center P without difficulty.

案内部材取付部４５ｄは、図１３（イ）における筒状部材４５ｃの紙面下方側から加工されており、この案内部材取付部４５ｄを加工するための加工穴４５ｅを、案内部材５１を案内部材取付部４５ｄに取り付ける取付穴として兼用することができ、図１３（イ）における紙面下方側から案内部材５１を筒状部材４５ｃの案内部材取付部４５ｄ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５１の組立作業の作業性を向上できる。   The guide member mounting portion 45d is processed from the lower side of the paper surface of the cylindrical member 45c in FIG. 13 (a), and a processing hole 45e for processing the guide member mounting portion 45d is provided as a guide member 51. It can also be used as an attachment hole attached to the portion 45d, and is configured such that the guide member 51 can be fitted and inserted into the guide member attachment portion 45d of the cylindrical member 45c from the lower side of the drawing in FIG. Therefore, the workability of the assembly work of the guide member 51 can be improved.

図１２〜図１４に示すように、案内部材５１は、磨耗し難い焼入れ等を施した鉄鋼材によって構成されており、円筒状の本体部分５１ａと、この本体部分５１ａから突出する係合部５１ｂとを一体成形することによって構成されている。係合部５１ｂは、案内溝４７ｂに沿って案内部材５１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４５ｅ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５１ｂの加工穴４５ｅ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５１の係合部５１ｂが螺旋状の案内溝４７ｂに沿って無理なく移動できる。   As shown in FIGS. 12-14, the guide member 51 is comprised with the steel material which gave the hardening etc. which are hard to wear, The cylindrical main-body part 51a and the engaging part 51b which protrudes from this main-body part 51a Are integrally formed. The engaging portion 51b has a rectangular cross-sectional shape in a direction orthogonal to the direction in which the guide member 51 moves along the guide groove 47b, and the shape viewed from the processing hole 45e side is a length in which the four corners are curved. It is formed in a circle. In this way, by forming the shape of the engaging portion 51b as viewed from the processing hole 45e side into an oval shape with curved four corners, the engaging portion 51b of the guide member 51 extends along the spiral guide groove 47b. You can move without difficulty.

案内部材５１の係合部５１ｂの幅は、中間軸４７の案内溝４７ｂの幅より少し小さく設定されており、案内部材５１を取り付けた状態で案内部材５１の係合部５１ｂと中間軸４７の案内溝４７ｂとの間に一定の隙間を形成でき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４７ｂに対する案内部材５１の係合部５１ｂの方向が変更され易くなり、案内部材５１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 51 b of the guide member 51 is set slightly smaller than the width of the guide groove 47 b of the intermediate shaft 47, and the engaging portion 51 b of the guide member 51 and the intermediate shaft 47 are in a state where the guide member 51 is attached. A fixed gap can be formed between the guide groove 47b and the guide groove 47b. With this configuration, the direction of the engaging portion 51b of the guide member 51 with respect to the guide groove 47b is easily changed, and the guide member 51 can be rotated without difficulty.

案内部材取付部４５ｄに案内部材５１を内嵌した状態で、中間軸４７に形成された案内溝４７ｂに案内部材５１の係合部５１ｂを係合させて、筒状部材４５ｃに中間軸４７を内嵌することで、案内部材５１を組み付けることができるように構成されている。   With the guide member 51 fitted in the guide member mounting portion 45d, the engaging portion 51b of the guide member 51 is engaged with the guide groove 47b formed in the intermediate shaft 47, and the intermediate shaft 47 is attached to the cylindrical member 45c. By being internally fitted, the guide member 51 can be assembled.

図１３（ロ）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、例えば中間軸４７に対して案内部材５１が搬送上流側（図１３（ロ）中の白矢印の方向）に移動すると、案内部材５１の係合部５１ｂが案内溝４７ｂ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５１が少し回転し、適度な摩擦力を案内部材５１の係合部５１ｂと案内溝４７ｂとの間に作用させながら、案内部材５１が案内溝４７ｂ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. 13B, the first and second cases 23 and 24 are expanded and contracted by the expansion / contraction mechanism 33 so that the second case 24 slides relative to the first case 23, for example, with respect to the intermediate shaft 47. When the guide member 51 is moved upstream (in the direction of the white arrow in FIG. 13B), the engaging portion 51b of the guide member 51 contacts the guide surface on the upstream side of the guide groove 47b, The guide member 51 supported so as to be able to rotate is slightly rotated, and an appropriate frictional force is applied between the engaging portion 51b of the guide member 51 and the guide groove 47b. It is configured to move without difficulty.

案内部材５１は第１筒軸４５の案内部材取付部４５ｄ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５１の係合部５１ｂの移動が妨げられた場合等に、案内部材５１が自ら回転することにより案内溝４７ｂに対する案内部材５１の係合部５１ｂの方向が少し変更されて、係合部５１ｂが無理なく案内溝４７ｂを移動できるように構成されている。   Since the guide member 51 is rotatably supported by the guide member mounting portion 45d of the first cylindrical shaft 45, the engaging portion of the guide member 51 is changed when the expansion / contraction direction is changed to the reverse direction or during expansion / contraction. When the movement of 51b is hindered or the like, the direction of the engaging portion 51b of the guide member 51 with respect to the guide groove 47b is slightly changed by the rotation of the guide member 51, so that the engaging portion 51b can be comfortably guided to the guide groove 47b. It is configured to be able to move.

また、案内部材５１の本体部分５１ａが必要以上に回転しないため、案内部材５１の本体部分５１ａが磨耗されて筒状部材４５ｃの案内部材取付部４５ｄ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５１及び案内取付部４５ｄの損傷を防止できる。   Further, since the main body portion 51a of the guide member 51 does not rotate more than necessary, the main body portion 51a of the guide member 51 is worn and the gap between the guide member mounting portion 45d of the cylindrical member 45c becomes large and the Damage to the guide member 51 and the guide attachment portion 45d can be prevented.

中間軸４７の外周部に形成した螺旋状の案内溝４７ｂの搬送方向のピッチは、第１スクリュ羽根４６及び第２スクリュ羽根４９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２スクリュ４１に対して第１スクリュ４０が回転しながら移動する際に、第２スクリュ羽根４９の搬送方向のスクリュピッチの略中間位置を第１スクリュ羽根４６が移動するように案内溝４７ｂが加工されている。   The pitch in the conveying direction of the spiral guide groove 47b formed on the outer peripheral portion of the intermediate shaft 47 is set to be approximately the same as the screw pitch in the conveying direction of the first screw blade 46 and the second screw blade 49, Further, when the first screw 40 moves while rotating with respect to the second screw 41, the guide groove so that the first screw blade 46 moves at a substantially intermediate position of the screw pitch in the conveying direction of the second screw blade 49. 47b is processed.

以上のように、第１スクリュ羽根４６と第２スクリュ羽根４９を上述した形状に形成し、第１筒軸４５の筒状部材４５ｃを第２スクリュ４１の中間軸４７と第２筒軸４８との間に嵌合させて、案内溝４７ｂに沿って案内部材５１を案内させることによって、第２スクリュ４１を第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させるスライド機構が構成されている。   As described above, the first screw blade 46 and the second screw blade 49 are formed in the shape described above, and the cylindrical member 45c of the first cylinder shaft 45 is replaced with the intermediate shaft 47 and the second cylinder shaft 48 of the second screw 41. And a guide mechanism 51 is guided along the guide groove 47b so that the second screw 41 slides relative to the first screw 40 while overlapping the first screw 40. ing.

このように、中間軸４７の案内溝４７ｂのピッチ、並びに、第１スクリュ羽根４６及び第２スクリュ羽根４９のスクリュピッチを略同一に設定し、第２スクリュ羽根４９の搬送方向のスクリュピッチの略中間位置を第１スクリュ羽根４６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４６と第２スクリュ４１の第２スクリュ羽根４９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４６と第２スクリュ羽根４９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。   As described above, the pitch of the guide groove 47b of the intermediate shaft 47 and the screw pitch of the first screw blade 46 and the second screw blade 49 are set to be substantially the same, and the screw pitch in the transport direction of the second screw blade 49 is substantially reduced. By configuring the intermediate screw position so that the first screw blade 46 moves, the first screw blade 46 of the first screw 40 and the second screw blade 49 of the second screw 41 when the first conveying screw 20 is expanded and contracted. A gap between the first screw blade 46 and the second screw blade 49 when the horizontal auger 9 is expanded or contracted, and the grain is damaged. Can be prevented.

図３，図８〜図１０に示すように、第１搬送スクリュ２０を上記のように構成することによって、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に対して搬送上流側にスライド移動すると、第１スクリュ４０の第１筒軸４５が第２スクリュ４１の中間軸４７と第２筒軸４８との間を案内溝４７ｂに案内されて、第２スクリュ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第２スクリュ４１の方に入り込んで、第１スクリュ４０の第１スクリュ羽根４６が第２スクリュ４１の第２スクリュ羽根４９のスクリュピッチの間を第２スクリュ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ながら第２スクリュ４１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。   As shown in FIGS. 3 and 8 to 10, by configuring the first conveying screw 20 as described above, the first and second cases 23 and 24 are expanded and contracted by the expansion and contraction mechanism 33 so that the second case 24 is expanded. When the first casing 23 slides and moves upstream of the first case 23, the first cylindrical shaft 45 of the first screw 40 is guided between the intermediate shaft 47 of the second screw 41 and the second cylindrical shaft 48 in the guide groove 47b. The second screw 41 enters the second screw 41 while rotating relative to the second screw in the direction opposite to the direction in which the grain is conveyed to the discharge port 9b, and the first screw blade 46 of the first screw 40 is second. By entering relative to the second screw 41 between the screw pitches of the second screw blades 49 of the screw 41 and entering the second screw 41 while relatively rotating in the direction opposite to the direction in which the grain is conveyed to the discharge port 9b. , First Feed screw 20 is configured so as to shorten.

一方、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４５が第２スクリュ４１の中間軸４７と第２筒軸４８との間を案内溝４７ｂに案内されて、第２スクリュ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ながら搬送上流側に相対移動するとともに、第１スクリュ４０の第１スクリュ羽根４６が第２スクリュ４１の第２スクリュ羽根４９のスクリュピッチの間を第２スクリュ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ながら搬送上流側に相対移動して、第１搬送スクリュ２０を伸長するように構成されている。   On the other hand, when the first and second cases 23 and 24 are expanded and contracted 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 first cylindrical shaft 45 of the first screw 40 is moved. The second screw 41 is guided by the guide groove 47b between the intermediate shaft 47 and the second cylindrical shaft 48, and is transported upstream while rotating relative to the second screw 41 in the direction of transporting the grain to the discharge port 9b. The first screw blade 46 of the first screw 40 conveys the grain to the discharge port 9b with respect to the second screw 41 between the screw pitches of the second screw blades 49 of the second screw 41. The first conveying screw 20 is extended by moving relatively upstream in the direction while relatively rotating in the direction.

また、伸縮機構３３を操作せずに駆動軸４２が回転して第２スクリュ４１が回転すると、搬送方向の力が働かないため、駆動軸４２の動力が中間軸４７及び案内部材５１を介して第１筒軸４５の筒状部材４５ｃに伝達されて、第１スクリュ４０が第２スクリュ４１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５１、中間軸４７に設けた案内溝４７ｂ、第１筒軸４５に設けた案内部材取付部４５ｄ等によって、第１スクリュ４０が第２スクリュ４１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４０，４１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４０，４１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４０，４１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 drive shaft 42 rotates without operating the telescopic mechanism 33 and the second screw 41 rotates, the force in the transport direction does not work, so the power of the drive shaft 42 is transmitted via the intermediate shaft 47 and the guide member 51. The first screw 40 is configured to rotate integrally with the second screw 41 by being transmitted to the cylindrical member 45 c of the first cylindrical shaft 45. Thus, the first screw 40 rotates integrally with the second screw 41 by the guide member 51, the guide groove 47b provided in the intermediate shaft 47, the guide member mounting portion 45d provided in the first cylinder shaft 45, and the like. By configuring, for example, the first and second screws 40, 41 can be driven to rotate independently of each other, and the first and second screws 40, 41 can be compared with the case where the lateral auger 9 can be expanded and contracted. It is not necessary to separately provide a mechanism for rotationally driving the first and second screws 40 and 41, and the mechanism for rotationally driving the first and second screws 40 and 41 can be simplified.

なお、駆動軸４２と一体回動する中間軸４７に螺旋状の案内溝４７ｂを設けて、この中間軸４７と第２筒軸４８との間に案内部材５１を設けた第１筒軸４５を配置することによって、案内溝４７ｂを加工した中間軸４７，案内部材５１，筒状部材４５ｃ等の部品を第２スクリュ４１の第２筒軸４８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中間軸４７や案内部材５１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、中間軸４７や案内部材５１等が錆び付くことを防止できる。   A spiral guide groove 47 b is provided in the intermediate shaft 47 that rotates integrally with the drive shaft 42, and the first cylinder shaft 45 provided with a guide member 51 between the intermediate shaft 47 and the second cylinder shaft 48 is provided. By disposing, parts such as the intermediate shaft 47, the guide member 51, and the cylindrical member 45c in which the guide groove 47b is processed can be accommodated in the second cylindrical shaft 48 of the second screw 41. Therefore, it becomes difficult for the dust and moisture of the grain passing through the horizontal auger 9 to adhere to the intermediate shaft 47, the guide member 51, etc., and it can be slid without difficulty, and the intermediate shaft 47, the guide member 51, etc. It can prevent rusting.

図４に示すように、伸縮機構３３を操作せずに駆動軸４２を回転させて穀粒を排出口９ｂに向って搬送している状態においては、第１スクリュ４０の第１スクリュ羽根４６及び第２スクリュ４１の第２スクリュ羽根４９は、いずれも穀粒を排出口９ｂに搬送する方向に回転する。しかし、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スクリュ４１が第１スクリュ４０に対して搬送上流側に移動すると、案内溝４７ｂに案内されて第１スクリュ４０の第１スクリュ羽根４６は、穀粒を排出口９ｂに搬送する方向とは逆方向に回転する。すなわち、伸縮機構３３により第１及び第２ケース２３，２４を伸縮させて横オーガ９を短縮させる状態においては、第１スクリュ４０が横オーガ９の供給口９ａ側に向って穀粒を搬送する方向に回転する。   As shown in FIG. 4, in the state where the drive shaft 42 is rotated without operating the telescopic mechanism 33 and the grain is conveyed toward the discharge port 9b, the first screw blade 46 of the first screw 40 and The second screw blades 49 of the second screw 41 rotate in the direction in which the grain is conveyed to the discharge port 9b. However, when the first and second cases 23 and 24 are expanded and contracted by the expansion / contraction mechanism 33 and the second screw 41 moves to the upstream side of the conveyance relative to the first screw 40, the first screw 40 is guided by the guide groove 47b. The first screw blade 46 rotates in the direction opposite to the direction in which the grain is conveyed to the discharge port 9b. In other words, in a state where the first and second cases 23 and 24 are expanded and contracted by the expansion / contraction mechanism 33 to shorten the horizontal auger 9, the first screw 40 conveys the grain toward the supply port 9a side of the horizontal auger 9. Rotate in the direction.

そのため、第１搬送スクリュ２０を伸縮させて、第２スクリュ４１に対して第１スクリュ４０を回転させたとしても、穀粒が横オーガ９の排出口９ｂに向って供給されることが少なくなって、横オーガ９を短縮させることによって排出口９ｂから穀粒が排出される穀粒ロスを少なくすることができる。特に、駆動軸４２を停止し第２スクリュ４１が回転していない場合においては、第２スクリュ４１が停止し第１スクリュ４０のみが横オーガ９の供給口９ａ側に向って穀粒を搬送する方向に回転している状態になるため、伸縮機構３３により第１及び第２ケース２３，２４を伸縮させて横オーガ９を伸縮する際に、排出口９ｂから穀粒が排出されてしまう穀粒ロスを更に少なくすることができる。   Therefore, even if the first conveying screw 20 is expanded and contracted and the first screw 40 is rotated with respect to the second screw 41, the grains are less likely to be supplied toward the discharge port 9b of the horizontal auger 9. Thus, by shortening the horizontal auger 9, it is possible to reduce the grain loss in which the grain is discharged from the discharge port 9b. In particular, when the drive shaft 42 is stopped and the second screw 41 is not rotating, the second screw 41 stops and only the first screw 40 conveys the grain toward the supply port 9a side of the lateral auger 9. Since the first and second cases 23, 24 are expanded / contracted by the expansion / contraction mechanism 33 and the horizontal auger 9 is expanded / contracted, the grains are discharged from the discharge port 9b. Loss can be further reduced.

図５及び図６に示すように、第２搬送スクリュ２１は、上述した第１搬送スクリュ２０と同様に、第１スクリュ４０と第２スクリュ４１とを備えて、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に対して搬送上流側にスライド移動すると、第１スクリュ４０の第１筒軸４５が第２スクリュ４１の中間軸４７と第２筒軸４８との間を案内溝４７ｂに案内されて第２スクリュ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ながら第２スクリュ４１の方に入り込んで、第１スクリュ４０の第１スクリュ羽根４６が第２スクリュ４１の第２スクリュ羽根４９のスクリュピッチの間を第２スクリュ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ながら第２スクリュ４１の方に入り込むことによって、第２搬送スクリュ２１が短縮するように構成されている。   As shown in FIGS. 5 and 6, the second transport screw 21 includes a first screw 40 and a second screw 41, similar to the first transport screw 20 described above, and the first and second screws are extended by the telescopic mechanism 33. When the second case 24 is expanded and contracted and the second case 24 is slid to the transport upstream side with respect to the first case 23, the first cylindrical shaft 45 of the first screw 40 and the intermediate shaft 47 of the second screw 41 are It is guided by the guide groove 47b between the two cylinder shafts 48 and enters the second screw 41 while rotating relative to the second screw 41 in the direction opposite to the direction in which the grain is conveyed to the discharge port 9b. The first screw blade 46 of the first screw 40 is opposite to the direction in which the grain is conveyed to the discharge port 9b with respect to the second screw 41 between the screw pitches of the second screw blades 49 of the second screw 41. While relative rotation By entering the 2/5 screw 41, the second conveying screw 21 is configured to shorten.

第２搬送スクリュ２１を構成する第１スクリュ４０の搬送上流側の端部は、第１搬送スクリュ２０を構成する第２スクリュ４１の中間軸４７に固定されたナット部材４７ａにすべり軸受５２を介して回動自在に支持されており、第１搬送スクリュ２０の第２スクリュ４１と一体で伸縮方向にスライド移動し、駆動軸４２に対して相対回転するように構成されている。一方、第２搬送スクリュ２１を構成する第２スクリュ４１の搬送下流側の端部は、第２スクリュ４１の中間軸４７に固定されたナット部材４７ａに外嵌したベアリング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に固定された支持部材５３に回動自在に支持されており、駆動軸４２と一体回動し、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ケース２４とともに駆動軸４２に対して伸縮方向にスライド移動するように構成されている。   The upstream end portion of the first screw 40 constituting the second conveying screw 21 is connected to the nut member 47a fixed to the intermediate shaft 47 of the second screw 41 constituting the first conveying screw 20 via the slide bearing 52. The second screw 41 of the first conveying screw 20 is slidably moved in the expansion / contraction direction and rotated relative to the drive shaft 42. On the other hand, the end of the second screw 41 constituting the second conveying screw 21 on the downstream side of the conveying is connected to the second screw 41 via a bearing 55 that is externally fitted to a nut member 47 a fixed to the intermediate shaft 47 of the second screw 41. The case 24 is rotatably supported by a support member 53 fixed to the sleeve 27 at the end portion on the upstream side of conveyance of the case 24, and rotates together with the drive shaft 42, so that the second case 24 is relative to the first case 23. When sliding, the second case 24 and the drive shaft 42 are configured to slide in the telescopic direction.

図６及び図７に示すように、第１搬送スクリュ２０及び第２搬送スクリュ２１の搬送下流側に第３搬送スクリュ２２を備え、第１搬送スクリュ２０と第２搬送スクリュ２１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の搬送下手側の端部に設けた排出口９ｂに向って搬送するように構成されている。   As shown in FIGS. 6 and 7, a third transport screw 22 is provided on the transport downstream side of the first transport screw 20 and the second transport screw 21, and the second case 24 is formed by the first transport screw 20 and the second transport screw 21. It is configured to convey the grain that has been conveyed to the discharge port 9b provided at the end of the second case 24 on the lower conveyance side.

第３搬送スクリュ２２は、円筒状の第３筒軸５６と、この第３筒軸５６の外周部の全長に亘って巻き付けられて固着された螺旋状の第３スクリュ羽根５７等を備えて構成されている。   The third conveying screw 22 includes a cylindrical third tube shaft 56 and a helical third screw blade 57 that is wound and fixed over the entire length of the outer peripheral portion of the third tube shaft 56. Has been.

第３搬送スクリュ２２の第３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３搬送スクリュ２２の第３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駆動軸４２の先端部が内嵌されている。   A support shaft 56a extends from the end of the third transport screw 22 on the downstream side of the third cylindrical shaft 56, and the support shaft 56a is rotatably supported by the second case 24 via a bearing 58. ing. On the other hand, a nut member 56b in which a hexagonal hole is machined is fixed to an end portion of the third conveying screw 22 on the upstream side of the third cylindrical shaft 56, and the nut member 56b has a hexagonal cross-sectional drive. The tip of the shaft 42 is fitted inside.

以上のように、第３搬送スクリュ２２を構成することによって、ベベル伝達機構１９を介して駆動軸４２が回転すると、第３搬送スクリュ２２もこの駆動軸４２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に向って搬送するように構成されている。   As described above, by configuring the third conveying screw 22, when the drive shaft 42 rotates via the bevel transmission mechanism 19, the third conveying screw 22 also rotates integrally with the driving shaft 42, and the second case. The grain that has been conveyed to 24 is configured to be conveyed toward a discharge port 9 b provided at the end of the second case 24 on the downstream side of conveyance.

〔伸縮機構の構造〕
図６、図１０及び図１１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。 [Structure of telescopic mechanism]
As shown in FIGS. 6, 10, and 11, an extension mechanism 33 that extends and retracts the lateral 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 are provided. 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.

以上のように伸縮機構３３を構成することによって、操縦部４に設けた横オーガ伸縮レバー６０（図１参照）を伸長側に操作すると電動モータ３５が回転するとともに減速機３６の出力軸３６ａが回転して、この出力軸３６ａに固定されたピニオンギア３７が回転する。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に設けた横オーガ伸縮レバー６０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 lateral auger telescopic lever 60 (see FIG. 1) provided in the control unit 4 is operated to the expansion side, the electric motor 35 rotates and the output shaft 36a of the speed reducer 36 The pinion gear 37 fixed to the output shaft 36a rotates by rotating. 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 lateral auger telescopic lever 60 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 fixed to the output shaft 36a. The gear 37 rotates in the reverse direction. 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.

〔横オーガの伸縮状態〕
図３に示すように、横オーガ９が最も伸長した状態（図３（イ）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の内部に位置する駆動軸４２は第３筒軸５６の内部を搬送下流側に移動する。そして、第１搬送スクリュ２０の搬送上流側の端部と第２搬送スクリュ２１の搬送下流側の端部の間の長さが短くなって、第１搬送スクリュ２０及び第２搬送スクリュ２１の第２スクリュ４１，４１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１スクリュ４０が、第１搬送スクリュ２０の第２スクリュ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ながら第１搬送スクリュ２０の第２スクリュ４１の方に入り込んで、第２搬送スクリュ２１の第１スクリュ４０が、第２搬送スクリュ２１の第２スクリュ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ながら第２搬送スクリュ２１の第２スクリュ４１の方に入り込む。 [Expanded state of horizontal auger]
As shown in FIG. 3, when the second case 24 is moved upstream of the first case 23 with respect to 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 drive shaft 42 located inside the case 24 moves inside the third cylindrical shaft 56 to the downstream side of conveyance. The length between the upstream end of the first transport screw 20 and the downstream end of the second transport screw 21 is shortened, and the first transport screw 20 and the second transport screw 21 have the first length. Two screws 41, 41 are pushed into the upstream side of conveyance. The first transport screw 20 rotates relative to the second screw 41 of the first transport screw 20 in the direction opposite to the direction in which the first screw 40 transports the grains to the discharge port 9b. The direction of entering the 20 second screw 41 and the direction in which the first screw 40 of the second conveying screw 21 conveys the grain to the discharge port 9b with respect to the second screw 41 of the second conveying screw 21 is reversed. The second conveying screw 21 enters the second screw 41 while relatively rotating in the direction.

一方、横オーガ９が最も短縮した状態（図３（ロ）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の内部に位置する駆動軸４２は第３筒軸５６の内部を搬送上流側に移動する。そして、第１搬送スクリュ２０の搬送上流側の端部と第２搬送スクリュ２１の搬送下流側の端部の間の長さが長くなって、第１搬送スクリュ２０及び第２搬送スクリュ２１の第２スクリュ４１，４１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１スクリュ４０は、その搬送上流側の端部が第１ケース２４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４１のみが搬送下流側に移動し、第１搬送スクリュ２０の第１スクリュ４０は第２スクリュ４１に対して穀粒を排出口９ｂに搬送する方向に相対回転する。また、第２搬送スクリュ２１の第１スクリュ４０は、その搬送上流側の端部が第１搬送スクリュ２０の第２スクリュ４１に支持されているため、第１搬送スクリュ２０に対して第２搬送スクリュ２１の第２スクリュ４１のみが搬送下流側に移動し、第２搬送スクリュ２１の第１スクリュ４０は第２搬送スクリュ２１の第２スクリュ４１及び第１搬送スクリュ２０の第２スクリュ４１に対して穀粒を排出口９ｂに搬送する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 by the telescopic mechanism 33 from the state in which the horizontal auger 9 is shortened most (the state shown in FIG. The drive shaft 42 positioned moves inside the third cylindrical shaft 56 to the upstream side of conveyance. The length between the end of the first transport screw 20 on the upstream side of the transport and the end of the second transport screw 21 on the downstream side of the transport becomes longer, so that the first transport screw 20 and the second transport screw 21 have the first length. The two screws 41, 41 are pulled downstream of the conveyance. And since the 1st screw 40 of the 1st conveyance screw 20 is supported by the 1st case 24 in the end part of the conveyance upstream, only the 2nd screw 41 of the 1st conveyance screw 20 moves to the conveyance downstream side. Then, the first screw 40 of the first transport screw 20 rotates relative to the second screw 41 in the direction of transporting the grain to the discharge port 9b. The first screw 40 of the second transport screw 21 is supported by the second screw 41 of the first transport screw 20 at the end on the upstream side of the transport, so that the second transport of the first screw 40 with respect to the first transport screw 20 is performed. Only the second screw 41 of the screw 21 moves to the downstream side of conveyance, and the first screw 40 of the second conveyance screw 21 is in relation to the second screw 41 of the second conveyance screw 21 and the second screw 41 of the first conveyance screw 20. And rotate relative to the direction of conveying the grain to the discharge port 9b.

図３（ロ）に示すように、伸縮機構３３によって第２ケース２４が第１ケース２３に対して搬送上流側に２Ｌ移動すると、第１搬送スクリュ２０及び第２搬送スクリュ２１がそれぞれＬ短縮する。すなわち、第１搬送スクリュ２０の第１スクリュ４０が第１搬送スクリュ２０の第２スクリュ４１に対してＬ入り込むことによって、第１搬送スクリュ２０がＬ短縮し、第２搬送スクリュ２１の第１スクリュ４０が第２搬送スクリュ２１の第２スクリュ４０に対してＬ入り込むことによって、第２搬送スクリュ２１がＬ短縮する。   As shown in FIG. 3 (b), when the second case 24 moves 2L upstream of the first case 23 by the telescopic mechanism 33, the first transfer screw 20 and the second transfer screw 21 are shortened by L, respectively. . That is, when the first screw 40 of the first conveying screw 20 enters L with respect to the second screw 41 of the first conveying screw 20, the first conveying screw 20 is shortened by L, and the first screw of the second conveying screw 21. When 40 enters L with respect to the second screw 40 of the second transport screw 21, the second transport screw 21 is shortened by L.

このように、第１スクリュ４０及び第２スクリュ４１を備えた第１搬送スクリュ２０に加えて、第１スクリュ４０及び第２スクリュ４１を備えた第２搬送スクリュ２１を設けて横オーガ９を構成することによって、横オーガ９を伸縮する長さを長く確保することができ、横オーガ９を広範囲で伸縮することができる。また、駆動軸４２が第３搬送スクリュ２２の第３筒軸５６の内部に入り込むように構成するとともに、駆動軸４２によって第１搬送スクリュ２０、第２搬送スクリュ２１及び第３搬送スクリュ２２のすべてを回動駆動可能に構成することができる。すなわち、第１搬送スクリュ２０、第２搬送スクリュ２１及び第３搬送スクリュ２２の配置やその駆動構造等の特性を有効に活用して、伸縮可能な横オーガ９を簡素な構造で、かつ、機能性に優れたものにすることができる。   Thus, in addition to the 1st conveyance screw 20 provided with the 1st screw 40 and the 2nd screw 41, the 2nd conveyance screw 21 provided with the 1st screw 40 and the 2nd screw 41 is provided, and the horizontal auger 9 is constituted. By doing so, it is possible to secure a long length for extending and retracting the horizontal auger 9, and to extend and contract the horizontal auger 9 in a wide range. Further, the drive shaft 42 is configured to enter the inside of the third cylindrical shaft 56 of the third transport screw 22, and all of the first transport screw 20, the second transport screw 21, and the third transport screw 22 are driven by the drive shaft 42. Can be configured to be rotatable. In other words, the expandable lateral auger 9 has a simple structure and functions by effectively utilizing the characteristics of the arrangement of the first conveying screw 20, the second conveying screw 21, and the third conveying screw 22 and the drive structure thereof. It can be made excellent.

［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及び第３搬送スクリュ２２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を構成してもよく、また、第１搬送スクリュ２０と第３搬送スクリュ２２との組み合わせによって横オーガ９を構成してもよい。 [First Alternative Embodiment of the Invention]
In the above-mentioned [Best Mode for Carrying Out the Invention], the horizontal auger 9 (grain discharge auger) provided with the second transport screw 21 and the third transport screw 22 in addition to the first transport screw 20 is taken as an example. However, the horizontal auger 9 may be constituted by only the first conveying screw 20, or the horizontal auger 9 may be constituted by a combination of the first conveying screw 20 and the third conveying screw 22.

前述の［発明を実施するための最良の形態］においては、第１スクリュ４０を、一端部を固着し一定の隙間を開けて巻き付けられた螺旋状の第１スクリュ羽根４６を備えて構成し、第２スクリュ４１を、全長に亘って固着された螺旋状の第２スクリュ羽根４９を備えて構成した例を示したが、第１スクリュ４０を、全長に亘って固着された螺旋状のスクリュ羽根を備えて構成し、第２スクリュ４１を、一端部を固着し一定の隙間を開けて巻き付けられた螺旋状のスクリュ羽根を備えて構成してもよい。   In the above-mentioned [Best Mode for Carrying Out the Invention], the first screw 40 is provided with a spiral first screw blade 46 that is fixed at one end and wound around a certain gap, Although the example which comprised the 2nd screw 41 with the helical 2nd screw blade 49 fixed over the full length was shown, the helical screw blade fixed over the full length was shown for the 1st screw 40. The second screw 41 may be configured to include a helical screw blade wound around one end of the second screw 41 with a certain gap.

前述の［発明を実施するための最良の形態］においては、第２スクリュ羽根４９の搬送方向のスクリュピッチの略中間位置を第１スクリュ羽根４６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１スクリュ羽根４６と第２スクリュ羽根４９の間に摩擦力が働き難い位置であれば、第２スクリュ羽根４９に対して第１スクリュ羽根４６が移動する位置は異なる位置であってもよい。   In the above-mentioned [Best Mode for Carrying Out the Invention], the example in which the first screw blade 46 is configured to move at a substantially intermediate position of the screw pitch in the transport direction of the second screw blade 49 is shown. If the grain can be prevented from being compressed and the frictional force is difficult to work between the first screw blade 46 and the second screw blade 49, the first screw blade 46 moves relative to the second screw blade 49. Different positions may be used.

［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、案内溝４７ｂの断面形状を矩形状に形成し、案内部材５１の係合部５１ｂの断面形状を矩形状に形成した例を示したが、案内溝４７ｂ及び案内部材５１の形状は異なるものであってもよく、例えば案内部材５１を球状の伝動ボール（図示せず）で構成し、案内溝４７ｂの断面形状を半円弧状に構成して、筒状部材４５ｃに伝動ボールを回動自在に支持し、案内溝４７ｂ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。 [Second Embodiment of the Invention]
In the above-mentioned [Best Mode for Carrying Out the Invention] and [First Different Embodiment of the Invention], the cross-sectional shape of the guide groove 47b is formed in a rectangular shape, and the cross-section of the engaging portion 51b of the guide member 51 is formed. Although an example in which the shape is formed in a rectangular shape has been shown, the shapes of the guide groove 47b and the guide member 51 may be different. For example, the guide member 51 is configured by a spherical transmission ball (not shown) and guided. A configuration may be adopted in which the cross-sectional shape of the groove 47b is formed in a semicircular arc shape, the transmission ball is rotatably supported on the cylindrical member 45c, and the transmission ball is moved along the guide groove 47b.

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、案内部材５１の材質を鉄鋼材で構成した例を示したが、案内部材５１の材質を異なる材質で構成してもよく、例えば、他の金属や磨耗し難い樹脂で構成してもよい。   In the above-mentioned [Best Mode for Carrying Out the Invention] and [First Alternative Embodiment of the Invention], the guide member 51 is made of steel. You may comprise with a different material, for example, you may comprise with other metals and resin with little abrasion.

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、案内部材５１の係合部５１ｂの加工穴４５ｅ側から見た形状を、四隅を湾曲させた長円形に形成した例を示したが、図１５及び図１６に示すように、案内部材５１の係合部５１ｂの形状は、断面形状が矩形状になる形状であれば異なる形状であってもよい。なお、図１５（イ）〜（ハ）は、案内部材５１の部品図を示し、図１５（イ）〜（ハ）の上方及び下方に示す図は、案内部材５１の側面図及び底面図をそれぞれ示す。また、図１６は、図１５（ハ）の案内部材５１を採用した場合における案内部材５１と案内溝４７ｂの位置関係を示す詳細横断面図を示す。   In the above-mentioned [Best Mode for Carrying Out the Invention] and [First Alternative Embodiment], the shape of the engaging portion 51b of the guide member 51 viewed from the processing hole 45e side is curved at the four corners. 15 and 16, the shape of the engaging portion 51b of the guide member 51 is different if the cross-sectional shape is a rectangular shape. Also good. FIGS. 15A to 15C are component diagrams of the guide member 51. FIGS. 15A to 15C are a side view and a bottom view of the guide member 51. Each is shown. FIG. 16 is a detailed cross-sectional view showing the positional relationship between the guide member 51 and the guide groove 47b when the guide member 51 of FIG.

図１５（イ）に示すように、係合部５１ｂの加工穴４５ｅ側から見た形状を楕円状に形成し、断面形状の幅が滑らかに変化するように構成してもよく、図１５（ロ）に示すように、係合部５１ｂの加工穴４５ｅ側から見た形状を屈曲させた直線状に形成し、係合部５１ｂの先端部に面取り加工を施した形状を採用してもよい。   As shown in FIG. 15A, the shape of the engagement portion 51b viewed from the processing hole 45e side may be formed in an elliptical shape so that the width of the cross-sectional shape changes smoothly. As shown in (b), a shape obtained by bending the shape of the engaging portion 51b viewed from the processing hole 45e side into a straight line and chamfering the tip of the engaging portion 51b may be adopted. .

また、図１５（ハ）に示すように、係合部５１ｂの形状を円柱状に形成してもよく、このように円柱状に形成することにより、案内溝４７ｂに沿って案内部材５１を更に無理なく移動させることができるため、無理なくスライド移動させることのできるスライド機構を構成することができ、横オーガ９を無理なく伸縮することができる。   Further, as shown in FIG. 15C, the shape of the engaging portion 51b may be formed in a columnar shape. By forming the columnar shape in this way, the guide member 51 is further moved along the guide groove 47b. Since it can be moved without difficulty, a slide mechanism that can be moved without difficulty can be configured, and the horizontal auger 9 can be expanded and contracted without difficulty.

具体的に説明すると、図１６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、例えば中間軸４７に対して案内部材４７が搬送上流側（図１６中の白矢印の方向）に移動すると、案内部材５１の係合部５１ｂが案内溝４７ｂの搬送上流側の案内面と接当することによって、この案内面との摩擦力が案内部材５１を回転させる方向（図１６中の黒矢印の方向）の力として作用して、回動自在に支持された案内部材５１が回転しながら案内溝４７ｂに沿って移動する。その結果、案内部材５１及び案内溝４７ｂに無理な力が働き難くなって、案内溝４７ｂに沿って案内部材５１を更に無理なく移動させることができる。   More specifically, as shown in FIG. 16, the first and second cases 23 and 24 are expanded and contracted by the expansion / contraction mechanism 33, and the second case 24 slides relative to the first case 23. When the guide member 47 moves to the upstream side (in the direction of the white arrow in FIG. 16) with respect to 47, the engaging portion 51b of the guide member 51 contacts the guide surface on the upstream side of the guide groove 47b. The frictional force with the guide surface acts as a force in the direction of rotating the guide member 51 (the direction of the black arrow in FIG. 16), and the guide groove 47b is rotated while the guide member 51 supported rotatably is rotated. Move along. As a result, it is difficult for an excessive force to act on the guide member 51 and the guide groove 47b, and the guide member 51 can be moved more easily along the guide groove 47b.

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］において示した案内溝４７ｂ、案内部材５１及び案内部材５１の取付構造に代えて、図１７に示すような案内溝４７ｂ、案内部材５１及び案内部材５１の取付構造を採用してもよい。なお、図１７（イ）及び（ロ）は、案内溝４７ｂに沿って案内部材５１が移動する方向に直交する方向の詳細縦断面図を示す。   As shown in FIG. 17 in place of the guide groove 47b, the guide member 51, and the guide member 51 mounting structure shown in the above [Best Mode for Carrying Out the Invention] and [First Alternative Embodiment]. The guide groove 47b, the guide member 51, and the guide member 51 mounting structure may be employed. FIGS. 17A and 17B are detailed longitudinal sectional views in a direction orthogonal to the direction in which the guide member 51 moves along the guide groove 47b.

図１７（イ）に示すように、案内部材５１の係合部５１ｂを円錐状に形成し、螺旋状の案内溝４７ｂの断面形状を少し斜めに傾斜させた台形状に構成してもよい。少し斜めに傾斜させた傾斜面によって案内部材５１の係合片５１ｂに働く周方向の力成分の一部が、図１７（イ）の紙面上方へ案内部材５１を推す力として働くため、係合部５１ｂの破損を防止することができ、係合部５１ｂを無理なく移動させることができる。   As shown in FIG. 17A, the engaging portion 51b of the guide member 51 may be formed in a conical shape, and the cross-sectional shape of the spiral guide groove 47b may be formed in a trapezoidal shape that is slightly inclined. A part of the circumferential force component acting on the engaging piece 51b of the guide member 51 by the inclined surface slightly inclined acts as a force for pushing the guide member 51 upward in FIG. The breakage of the part 51b can be prevented, and the engaging part 51b can be moved without difficulty.

図１７（ロ）に示すように、案内部材５１と第１筒軸４５とに亘って弾性部材６１を設けて、案内部材５１を中間軸４７の案内溝４７ｂに押し付ける反力を作用させるように構成してもよい。弾性部材６１を設けることにより、案内部材５１に無理な力が作用した場合には、弾性部材６１の反力に抗して案内部材５１が図１７（ロ）の紙面上方に逃げることができるため、係合部５１ｂを更に無理なく移動させることができる。なお、図１７（イ）の案内部材５１に、図１７（ロ）の弾性部材６１を適用する構成を採用してもよい。   As shown in FIG. 17 (b), an elastic member 61 is provided across the guide member 51 and the first tube shaft 45 so as to apply a reaction force that presses the guide member 51 against the guide groove 47 b of the intermediate shaft 47. It may be configured. By providing the elastic member 61, when an excessive force is applied to the guide member 51, the guide member 51 can escape upward in the drawing of FIG. 17B against the reaction force of the elastic member 61. The engaging portion 51b can be further moved without difficulty. In addition, you may employ | adopt the structure which applies the elastic member 61 of FIG. 17 (B) to the guide member 51 of FIG. 17 (A).

［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、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。 [Third Another Embodiment of the Invention]
In the above-mentioned [Best Mode for Carrying Out the Invention], [First Another Mode of Carrying Out the Invention] and [Second Another Mode of Carrying Out the Invention], the telescopic mechanism 33 includes the rack 32, the pinion gear 37, and the like. Although an example of using it has been shown, a different structure may be adopted as long as the same function is achieved. For example, the telescopic mechanism 33 may be configured using a feed screw (not shown) or the like.

コンバインの全体右側面図Combine right 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Ａ部の詳細構造を示す縦断面図Longitudinal sectional view showing the detailed structure of part A 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Ｂ部の詳細構造を示す縦断面図Longitudinal sectional view showing the detailed structure of part B 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Ｃ部の詳細構造を示す縦断面図Longitudinal sectional view showing the detailed structure of part C 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Ｄ部の詳細構造を示す縦断面図Longitudinal sectional view showing detailed structure of part D 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Ｅ部の詳細構造を示す縦断面図Longitudinal sectional view showing the detailed structure of part E 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Ｆ部の詳細構造を示す縦断面図Longitudinal sectional view showing the detailed structure of the F section when the horizontal auger is shortened 横オーガを短縮させた状態におけるＧ部の詳細構造を示す縦断面図Longitudinal sectional view showing the detailed structure of the G section in a state where the horizontal auger is shortened 伸縮機構の構造を示すＸ―Ｘ断面図XX cross section showing structure of telescopic mechanism 案内部材及び案内溝の詳細構造を示す縦断面図Longitudinal sectional view showing detailed structure of guide member and guide groove 案内部材及び案内溝の構造を示す詳細図Detailed view showing structure of guide member and guide groove 案内部材の部品図Part drawing of guide member 発明の実施の第２別形態における案内部材の部品図Part drawing of guide member in second alternative embodiment of invention 発明の実施の第２別形態における案内部材及び案内溝の構造を示す詳細図Detailed view showing the structure of the guide member and the guide groove in the second alternative embodiment of the invention 発明の実施の第２別形態における案内部材の構造を示す概略図Schematic which shows the structure of the guide member in 2nd another form of implementation of 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
４１ 第２スクリュ
４５ 筒軸
４５ｄ 案内部材取付部
４６ 第１スクリュ羽根
４７ 軸
４７ｂ 案内溝
４９ 第２スクリュ羽根
５１ 案内部材
５１ａ 本体部分
５１ｂ 係合部
Ｐ 軸心 9 Horizontal auger (grain discharge auger)
9a supply port 9b discharge port 23 first case 24 second case 33 telescopic mechanism 40 first screw 41 second screw
45 cylinder shaft
45d guide member mounting portion 46 first screw blade
47 shaft 47b guide groove 49 second screw blade 51 guide member
51a body portion 51b engaging portion
P axis

Claims (6)

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、搬送上流側に位置する第１スクリュと搬送下流側に位置する第２スクリュとを備えて、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て、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であって、
前記伸縮機構により前記第１及び第２ケースを伸縮させると、前記第２スクリュを前記第１スクリュと重なり合いながら前記第１スクリュに対してスライド移動させるスライド機構を備え、
前記スライド機構を、前記第１又は第２スクリュの一方に設けられた螺旋状の案内溝と、前記第１又は第２スクリュの他方に設けられた案内部材とを備え、前記案内溝に前記案内部材を係合させて構成し、
前記案内部材を、前記第１又は第２スクリュの一方に備えられた軸と前記軸に外嵌するように前記第１又は第２スクリュの他方に備えられた筒軸とに亘る状態で前記軸と前記筒軸との間に内装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. The first and second cases include a first screw located on the upstream side of the conveyance and a second screw located on the downstream side of the conveyance, and the winding direction of the first screw blade of the first screw and the The winding direction of the second screw blade of the second screw is set to the same winding direction, and the supply port located at the end of the first case on the upstream side of the transfer from the supply port on the downstream side of the transfer of the second case. It is a combine grain discharge auger that is configured to be able to convey the grain toward the discharge port located and to be stretchable,
When the first and second cases are expanded and contracted by the expansion and contraction mechanism, a slide mechanism is provided that slides the second screw relative to the first screw while overlapping the first screw.
The slide mechanism includes a spiral guide groove provided on one of the first or second screw and a guide member provided on the other of the first or second screw, and the guide groove is provided with the guide. It is configured by engaging the members ,
The shaft in a state in which the guide member extends over a shaft provided on one of the first or second screw and a cylindrical shaft provided on the other of the first or second screw so as to be fitted on the shaft. Combined grain discharge auger, which is built in between the cylinder shaft . 前記軸の外周部に前記案内溝を形成し、前記筒軸の内周面に案内部材取付部を凹入形成してある請求項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 guide groove is formed in an outer peripheral portion of the shaft, and a guide member attaching portion is recessedly formed in an inner peripheral surface of the cylindrical shaft. 前記案内部材取付部を、前記案内部材取付部に係入する前記案内部材の本体部分が前記筒軸の内周面から突出しない深さを有するように形成してある請求項２記載のコンバインの穀粒排出オーガ。3. The combine according to claim 2, wherein the guide member mounting portion is formed so that a main body portion of the guide member engaged with the guide member mounting portion does not protrude from an inner peripheral surface of the cylindrical shaft. Kernel discharge auger. 前記案内溝に係合する前記案内部材の係合部を前記案内溝に沿う方向に細長い長円形に形成してある請求項１〜３のいずれか一つに記載のコンバインの穀粒排出オーガ。The combine grain discharge auger according to any one of claims 1 to 3, wherein an engaging portion of the guide member that engages with the guide groove is formed in an elongated oval shape in a direction along the guide groove. 前記案内部材の本体部分を前記案内溝に係合する前記案内部材の係合部よりも前記案内溝に沿って前記案内部材が移動する方向と直交する方向での長さが大きくなるように前記案内部材を構成してある請求項１〜４のいずれか一つに記載のコンバインの穀粒排出オーガ。The length in a direction orthogonal to the direction in which the guide member moves along the guide groove is larger than the engaging portion of the guide member that engages the main body portion of the guide member with the guide groove. The combine grain discharge auger according to any one of claims 1 to 4, wherein the guide member is configured. 断面形状が矩形状になるように、前記案内溝を構成するとともに、前記案内溝に沿って前記案内部材が移動する方向に直交する方向での前記案内溝に係合する係合部の断面形状が矩形状になるように、前記案内部材を構成し、
前記案内部材を前記第１又は第２スクリュの径方向に沿う軸心周りに回動自在に支持してある請求項１〜５のいずれか一つに記載のコンバインの穀粒排出オーガ。 The guide groove is configured to have a rectangular cross-sectional shape, and the cross-sectional shape of the engaging portion that engages with the guide groove in a direction orthogonal to the direction in which the guide member moves along the guide groove. The guide member is configured so that is rectangular.
The combine grain discharge auger according to any one of claims 1 to 5, wherein the guide member is rotatably supported around an axial center along a radial direction of the first or second screw.
JP2007006018A 2007-01-15 2007-01-15 Combine grain discharge auger Active JP4903589B2 (en)

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JPH0639564Y2 (en) * 1988-02-10 1994-10-19 三菱農機株式会社 Grain discharging device in combine
JP3843563B2 (en) * 1997-11-27 2006-11-08 井関農機株式会社 Grain discharger
JP3282587B2 (en) * 1998-06-29 2002-05-13 井関農機株式会社 Telescopic grain transfer device such as combine
JP3975641B2 (en) * 2000-03-10 2007-09-12 井関農機株式会社 Combined expansion and contraction grain transfer device
JP2002186345A (en) * 2000-12-19 2002-07-02 Yanmar Agricult Equip Co Ltd Extension and contraction structure for discharging auger of combine

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