JP3755330B2

JP3755330B2 - Combine telescopic auger

Info

Publication number: JP3755330B2
Application number: JP08195099A
Authority: JP
Inventors: 健治河野; 正典井上; 秀範岡崎
Original assignee: Iseki and Co Ltd
Current assignee: Iseki and Co Ltd
Priority date: 1999-03-25
Filing date: 1999-03-25
Publication date: 2006-03-15
Anticipated expiration: 2019-03-25
Also published as: JP2000270669A

Description

【０００１】
【発明の属する技術分野】
本発明は、コンバインの伸縮式オ−ガに関するもので、農業機械の技術分野に属する。
【０００２】
【従来の技術】
従来からコンバインは、刈取穀稈を脱穀する脱穀装置と、脱穀後の穀粒を収納貯溜するためのグレンタンクとを併設して刈取脱穀作業を連続的に行うことができる構成としている。そして、グレンタンクは、作業の進行にともなって順次貯溜される穀粒が満杯に達すると、内装している排出螺旋から、揚穀装置、排出オ−ガを利用して、貯溜穀粒を待機中のトラックのタンクに搬出する構成としている。
【０００３】
そして、前記排出オ−ガは、基部側の固定搬送筒に、穀粒排出口を有する先端側の移動搬送筒を摺動自由に挿入嵌合して設け、搬送端部の穀粒排出口を遠近方向に伸縮移動できる構成である。
【０００４】
【発明が解決しようとする課題】
この種の伸縮オ−ガは、搬送端部の穀粒排出口をトラックのタンクに合わせて搬出場所を決めて作業を行なうが、このとき、先端側の移動搬送筒を穀粒搬送方向下手側へ最も長く伸ばしたときにおいて移動搬送筒の動きが不安定なものとなっていた。
【０００５】
【課題を解決するための手段】
本発明は、上述した課題を解決するために、次の如き技術手段を講ずるものである。すなわち、固定搬送筒（１５）の基部を揚穀筒（１２）の上部に連結し、先端部に穀粒排出口（１７）を開口する移動搬送筒（２）の基部側を前記固定搬送筒（１５）の先端側から摺動自由に嵌合させるにあたり、移動搬送筒（２）の基部の上下に支持ローラ（２７）を軸架して設けて該支持ローラ（２７）の両側のフランジ（２８，２８´）部を固定搬送筒（１５）側の２つのガイド（２９）の両外側に係合させて移動搬送筒（２）を伸縮ガイドするように構成し、角軸に形成する伝動軸（４）の先端部を前記移動搬送筒（２）の穀粒排出口（１７）の上方位置に軸受すると共に該伝動軸（４）の後部を前記固定搬送筒（１５）に内装される搬送螺旋（１６）の軸内に摺動自由に挿入し、多数の螺旋単体（３ａ）を前記伝動軸（４）に摺動自由に嵌合させて一連の伸縮螺旋（３）を構成するにあたり、前記伝動軸（４）に摺動自由に嵌合する軸受ボス（５）部に対して取付け部材（１８）を略半円筒状に形成して設け、該略半円筒状に形成した取付け部材（１８）に螺旋部（６）を取り付けると共に該隣接する螺旋部（６，６´）どうしを最接近させても該隣接する軸受ボス（５，５´）どうしの間に間隔ができて接触しないように該軸受ボス（５）の端部にスペーサ用の突起（７）を設けて隣接する軸受ボス（５´）との間隔を保持できるように構成し、該螺旋単体（３ａ）どうしが最大に離れても螺旋部（６，６´）どうしは繋がっているように前記隣接する螺旋単体（３ａ）の螺旋部（６´）を係止して離脱を防止する螺旋係止体（６ａ）を設けて前記螺旋単体（３ａ）を構成したことを特徴とするコンバインの伸縮式オーガとしたものである。
【発明の効果】
本発明によると、伝動軸４に摺動自由に嵌合させた多数の螺旋単体３ａの相互の間隔を調節できるため、移動搬送筒２を固定搬送筒１５に嵌合させた状態で伸び縮みさせて、先端部の穀粒排出口１７の位置を基部の揚穀筒１２に対して遠ざけたり近づけたり調節して穀粒の落下位置を選択することができる。
また、移動搬送筒２の基部の上下に軸架した支持ローラ２７の両側のフランジ２８，２８´部を固定搬送筒１５側の２つのガイド２９の両外側に係合させて移動搬送筒２を伸縮ガイドすることにより、移動搬送筒２の伸縮作動時における首振り現象を減少させることができる。
また、螺旋単体３ａに設けた螺旋係止体６ａによって隣接する螺旋単体３ａの螺旋部６´を係止して離脱を防止でき、移動搬送筒２を安定して伸縮させることができる。
また、軸受ボス５の端部にスペーサ用の突起７を設け、略半円筒状に形成した取付け部材１８に螺旋部６を取り付けることにより該隣接する螺旋部６，６´どうしを最接近させても該隣接する軸受ボス５，５´どうしの間に間隔ができて接触しないように該隣接する軸受ボス５´との間隔を保持することができる。
【０００６】
【発明の実施の形態】
まず、その構成について述べる。
コンバインのグレンタンク１は、具体的には図示していないが、従来から公知のように、脱穀装置の側部に併設して走行車体８上に搭載し、その脱穀装置から一番揚穀装置を介して搬送されてきた脱穀・選別後の穀粒を貯溜できる構成としている。そして、排出螺旋９は、図１に示すように、グレンタンク１の底部に軸装して設け、始端側を機外の伝動軸１０にクラッチ装置１１を介して連結し、終端側を揚穀筒１２の下部まで延長して、内装している揚穀螺旋１３の下端部に接続して構成している。
【０００７】
そして、穀粒搬出オ−ガ１４は、前記揚穀筒１２の上部に上下方向へ回動自由に接続する固定搬送筒１５と、これに接続する移動搬送筒２とから構成しているが、以下、その構成を具体的に説明する。
まず、固定搬送筒１５は、図１に示すように、基部を前記揚穀筒１２の上部に連結し、先端部を外方に延長して設け、その筒内には、始端部を前記揚穀螺旋１３に接続した搬送螺旋１６を内装して、揚穀筒１２から受け継いだ穀粒を搬送する構成としている。そして、移動搬送筒２は、図１に示すように、先端部に穀粒排出口１７を開口して設け、基部側を、前記固定搬送筒１５の先端側から挿入嵌合して摺動自由に連結している。
【０００８】
つぎに、伸縮螺旋３は、図１に示すように、移動搬送筒２内において、先端部を穀粒排出口１７の上方位置に軸受して後部を固定搬送筒１５側に延長して前記搬送螺旋１６の軸内に摺動自由に挿入した伝動軸４を軸架して設け、この伝動軸４に多数の螺旋単体３ａ……を摺動自由に嵌合して相互の間隔を調節できるように構成している。
【０００９】
そして、螺旋単体３ａは、図２に示すように、前記伝動軸４に摺動自由に嵌合する軸受ボス５の外周に、略半円筒に形成した取付け部材１８によって螺旋部６を取り付けて構成している。そして、軸受ボス５は、図２に示すように、Ａの長さにて構成している。つまり、螺旋単体３ａは、図４に示すように螺旋部６を隣接の螺旋部６’に最も接近したとき（図４の左部分参照）、隣接の軸受ボス５’との間に間隔ができて接触しない短い長さに形成されている。そして、前記軸受ボス５は、その端部にスペ−サ用の突起７を設けて隣接の軸受ボス５’との間隔を保持する構成としている。６ａは螺旋係止体であって、隣接の螺旋部６’を係止して離脱を防止する（螺旋単体３ａが最大に離れても螺旋部６同志は繋がっている。）構成としている。
【００１０】
このように構成された螺旋単体３ａは、角軸（本実施例では６角軸）にした前記伝動軸４に対して、回転方向へは規制され、軸方向には摺動自由の状態にして嵌合され、複数によって一連の伸縮螺旋３を構成している。
つぎに、伸縮駆動装置１９は、図１に示すように、揚穀筒１２の上部位置に装備した伸縮制御モ−タ２０に減速装置を介して螺旋軸２１の基端部を連結して強制駆動する構成としている。そして、移動装置２２は、上記螺旋軸２１の螺旋溝に係合している伝動ピンを介して、強制的に軸方向に移動するように設け、前記移動搬送筒２の基部側に一体的に連結して構成している。なお、伸縮駆動装置１９は、図１に示すように、縮小側と伸長側とにそれぞれリミットセンサＳ1、Ｓ2を設けて前記移動装置２２が達すると伸縮制御モ−タ２０を自動停止する構成としている。
【００１１】
なお、伸縮制御モ−タ２０は、具体的に図示はしていないが、操縦席の操作パネル上に設けたスイッチ（伸縮スイッチ）のＯＮ操作に基づいて、正転又は逆転方向に駆動されて螺旋軸２１を回転駆動する構成とし、螺旋軸２１が正転すれば、係合している移動装置２２を介して移動搬送筒２を伸長し、逆転すれば、縮小方向に強制的に移動する構成としている。
【００１２】
このようにして、移動搬送筒２は、固定搬送筒１５に嵌合した状態で筒に沿って伸び縮みして、先端部の穀粒排出口１７の位置を、基部の揚穀筒１２に対して、遠ざけたり、近ずけたり調節して穀粒の落下位置を選択できる構成としている。
なお、図１において、２３は昇降油圧シリンダ、２４は旋回モ−タ、２５は駆動ギヤ、２６は旋回ギヤを示す。
【００１３】
そして、支持ロ−ラ２７は、図１に示すように、移動搬送筒２の基部位置の上下に軸架して設け、固定搬送筒１５の周面を転動しながら支持する構成にしているが、具体的構成は、図５に示すように、両側にフランジ２８、２８’を設けて固定搬送筒１５側のガイド２９に係合する構成にしている。これによって、移動搬送筒２は、従来の鼓型のロ−ラに比べて、伸縮作動時に先端側の首振り現象が著しく減少することになった。
【００１４】
前述のごとく構成された伸縮式オ−ガ装置において、図１に示すように、固定搬送筒１５の長さは、移動搬送筒２を長手方向へ移動伸縮させる螺旋軸２１よりも穀粒搬送方向下手側へ長くなるように構成する。すると、移動搬送筒２を最大伸ばしたときにおいて、移動搬送筒２が固定搬送筒１５と嵌合している部分の長さを所定値以上確保できるので、これにより、移動搬送筒２は安定して固定搬送筒１５に嵌合することができるので、移動搬送筒２は安定して移動伸縮することができる。（図６）
次に、図７と図８について説明する。
【００１５】
前記螺旋単体３ａの螺旋部６を支持する軸受ボス５の別実施例の構成において、伝動軸４との摺動抵抗を減らすために、前部摺動部３０ａと後部摺動部３０ｂとの短い区間にて摺動するように構成し、その内部は空間部３０ｃにて構成している。また、前記前部摺動部３０ａの穀粒搬送方向下手側と後部摺動部３０ｂの穀粒搬送方向上手側において、シール部材３１を設けるように構成する。
【００１６】
図８には該シール部材３１の斜視図を示している。シール部材３１にて６角の伝動軸４が通過可能に６角穴３１ａが設けられ、該６角穴３１ａは６角の伝動軸４がきつめに通過するように構成している。また、該６角穴３１ａに６角の伝動軸４を嵌合させやすいように切れ目３１ｂを設けている。これにより、前記伝動軸４に付着する塵埃を除去できるので、螺旋単体３ａはスムーズに移動することができる。また、伝動軸４自体に塵埃が付着しないので螺旋単体３ａにも塵埃が付着することを防止できる。
【００１７】
前記シール部材３１の代わりに、図９と図１０に示すように通常トランスミッション等のオイル漏れ防止等に使用するオイルシール３２を用いる構成でもよい。該オイルシール３２には穴部３２ａが開いているが、６角の伝動軸４が通過しても問題はない。つまり、穴部３２ａの径は小さくしかも弾力性が大きく構成されているので、６角の伝動軸４を充分に密着することができる。これにより、伝動軸４と螺旋単体３ａに塵埃が付着するのを防止することができる。
【００１８】
次に、図１１と図１２について説明する。
前記シール部材３１の代わりに、弾性力のあるブラシ体３３を設けるようにしてもよい。該ブラシ体３３は、図１２に示すように弾性力のある基部３３ａの上面に同じく弾性力のあるブラシ３３ｂを植設している構成である。このブラシ体３３を丸めて、図１１に示すように、前記前部摺動部３０ａの穀粒搬送方向下手側と後部摺動部３０ｂの穀粒搬送方向上手側に設ける構成とする。弾性体であるので、抜けないように接着材にて固着するようにする。これにより、同じく伝動軸４と螺旋単体３に塵埃が付着するのを防止することができる。
【００１９】
【図面の簡単な説明】
【図１】コンバインの右側面図
【図２】螺旋単体の側面図
【図３】螺旋単体の背面図
【図４】複数の螺旋単体の側面図
【図５】断面図
【図６】穀粒搬出オーガの右側面図
【図７】断面図
【図８】斜視図
【図９】断面図
【図１０】斜視図
【図１１】断面図
【図１２】斜視図
【符号の説明】
２移動搬送筒
３ａ螺旋単体
４伝動軸
５軸受ボス
６螺旋部
６´ 隣接する螺旋単体の螺旋部
７突起
１２揚穀筒
１５固定搬送
１６搬送螺旋
１７穀粒排出口
１８取付け部材
２７支持ローラ
２８フランジ
２８´ フランジ
２９ガイド [0001]
BACKGROUND OF THE INVENTION
The present invention relates to a combine expandable auger and belongs to the technical field of agricultural machinery.
[0002]
[Prior art]
Conventionally, a combine has been configured such that a threshing device for threshing a harvested cereal meal and a Glen tank for storing and storing the grain after threshing can be continuously performed. And when the grain which is sequentially stored reaches full as the work progresses, the Glen tank waits for the stored grain from the built-in discharge spiral using the cerealing device and the discharge organ. It is configured to be carried out to the tank of the inside truck.
[0003]
The discharge agar is provided in the base-side fixed transfer cylinder by slidingly inserting and fitting a movable transfer cylinder on the front end side having a grain discharge port, and a grain discharge port at the transfer end is provided. It is a structure that can be expanded and contracted in the perspective direction.
[0004]
[Problems to be solved by the invention]
This type of telescopic auger works by setting the grain outlet at the transport end to the tank of the truck and determining the unloading location. At this time, the moving transport cylinder on the tip side is positioned on the lower side in the grain transport direction. When the tube was extended to the longest, the movement of the movable transfer cylinder was unstable.
[0005]
[Means for Solving the Problems]
The present invention takes the following technical means in order to solve the above-described problems. That is, the base part of the movable transfer cylinder (2) which connects the base part of the fixed transfer cylinder (15) to the upper part of the cereal cylinder (12) and opens the grain discharge port (17) at the tip part is the fixed transfer cylinder. Upon the distal end side of (15) Ru not slide freely fitted, on both sides of the flange and Jikuka supporting roller (27) above and below the base provided the support rollers of the moving conveying cylinder (2) (27) The (28, 28 ') portion is engaged with both outer sides of the two guides (29) on the fixed conveyance cylinder (15) side so that the movable conveyance cylinder (2) is guided to extend and contract , and is formed on a square axis. The front end of the transmission shaft (4) is supported at a position above the grain outlet (17) of the movable transport cylinder (2), and the rear portion of the transmission shaft (4) is housed in the fixed transport cylinder (15). It is slidably inserted into the shaft of the conveying spiral (16), and a large number of single spirals (3a) slide on the transmission shaft (4). In order to form a series of telescopic spirals (3) by freely fitting, the mounting member (18) is substantially semi-cylindrical with respect to the bearing boss (5) portion that is slidably fitted to the transmission shaft (4). provided formed Jo, also said adjacent spiral portion (6, 6 ') How to is closest to is attached a spiral portion (6) to the mounting member (18) formed in said substantially semi-cylindrical shape to the adjacent A spacer projection (7) is provided at the end of the bearing boss (5) so that there is a gap between the bearing bosses (5, 5 ') so that they do not come into contact with each other. It is configured so that the interval can be maintained, and the spiral portions (6a) of the adjacent spiral single bodies (3a) are connected so that the spiral portions (6, 6 ') are connected to each other even if the spiral single bodies (3a) are separated to the maximum. ') Is provided to form the spiral unit (3a) by providing a spiral locking body (6a) for preventing separation. Is obtained by a telescoping auger Combine, characterized in that the.
【The invention's effect】
According to the present invention, it is possible to adjust the distance between the multiple spiral single-pieces 3 a that are slidably fitted to the transmission shaft 4, so that the movable conveyance cylinder 2 is expanded and contracted in a state where the movable conveyance cylinder 2 is fitted to the fixed conveyance cylinder 15. Thus, the position of the grain drop outlet 17 can be selected by adjusting the position of the grain outlet 17 at the distal end away from or closer to the base of the whipping cylinder 12.
The flanges 28 and 28 'on both sides of the support roller 27 pivoted above and below the base of the movable conveyance cylinder 2 are engaged with both outer sides of the two guides 29 on the fixed conveyance cylinder 15 side so that the movable conveyance cylinder 2 is By performing the extension / contraction guide, the swinging phenomenon at the time of the extension / contraction operation of the movable transfer cylinder 2 can be reduced.
Further, the spiral locking body 6a provided on the spiral single body 3a can be used to lock the spiral portion 6 'of the adjacent spiral single body 3a to prevent detachment, and the movable transfer cylinder 2 can be stably expanded and contracted.
In addition, a spacer projection 7 is provided at the end of the bearing boss 5, and the spiral portion 6 is attached to an attachment member 18 formed in a substantially semi-cylindrical shape so that the adjacent spiral portions 6 and 6 ′ are brought closest to each other. In addition, the distance between the adjacent bearing bosses 5 and 5 'can be maintained so that the distance between the adjacent bearing bosses 5 and 5' is not contacted.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
First, the configuration will be described.
The grain tank 1 of the combine is not specifically shown, but, as is conventionally known, it is mounted on the traveling vehicle body 8 along with the side portion of the threshing device, and the threshing device is the first threshing device. It is set as the structure which can store the grain after the threshing and the selection conveyed through. As shown in FIG. 1, the discharge spiral 9 is provided by being mounted on the bottom of the Glen tank 1, the start end side is connected to the transmission shaft 10 outside the machine via the clutch device 11, and the end side is grounded. It extends to the lower part of the cylinder 12 and is connected to the lower end of the whipping spiral 13 that is internally provided.
[0007]
And the grain carrying-out agar 14 is comprised from the fixed conveyance cylinder 15 connected to the upper part of the said whipping cylinder 12 freely in the up-down direction, and the movement conveyance cylinder 2 connected to this, The configuration will be specifically described below.
First, as shown in FIG. 1, the fixed conveying cylinder 15 is provided with a base portion connected to an upper portion of the whipping cylinder 12, an end portion extending outwardly, and a starting end portion in the cylinder. A conveying spiral 16 connected to the grain helix 13 is internally provided to convey the grain inherited from the whipping cylinder 12. As shown in FIG. 1, the movable transfer cylinder 2 is provided with a grain outlet 17 opened at the tip, and the base side is inserted and fitted from the tip side of the fixed transfer cylinder 15 to freely slide. It is linked to.
[0008]
Next, as shown in FIG. 1, the telescopic spiral 3 is configured such that, in the movable conveyance cylinder 2, the front end is supported at a position above the grain outlet 17 and the rear portion is extended to the fixed conveyance cylinder 15 side to convey the conveyance helix 3. A transmission shaft 4 that is freely slidably inserted into the shaft of the spiral 16 is provided so as to be mounted on the shaft, and a plurality of spiral single bodies 3a... It is configured.
[0009]
As shown in FIG. 2, the spiral unit 3 a is configured by attaching the spiral portion 6 to the outer periphery of the bearing boss 5 that is slidably fitted to the transmission shaft 4 by a mounting member 18 formed in a substantially semi-cylindrical shape. is doing. And the bearing boss | hub 5 is comprised by the length of A, as shown in FIG. That is, as shown in FIG. 4, when the spiral unit 6a is closest to the adjacent spiral unit 6 ′ (see the left part of FIG. 4), the spiral unit 3a is spaced from the adjacent bearing boss 5 ′. It is formed in a short length that does not touch. The bearing boss 5 is provided with a spacer projection 7 at an end thereof to maintain a distance from the adjacent bearing boss 5 '. Reference numeral 6a denotes a spiral locking body that locks adjacent spiral portions 6 'to prevent detachment (the spiral portions 6 are connected even if the spiral single body 3a is separated to the maximum).
[0010]
The helical single body 3a configured as described above is regulated in the rotational direction and free to slide in the axial direction with respect to the transmission shaft 4 having an angular axis (hexagonal axis in this embodiment). A series of telescopic spirals 3 are formed by being fitted.
Next, as shown in FIG. 1, the expansion / contraction drive device 19 is connected to the expansion / contraction control motor 20 provided at the upper position of the cereal cylinder 12 by connecting the base end portion of the spiral shaft 21 via the speed reduction device. It is configured to drive. The moving device 22 is provided so as to be forcibly moved in the axial direction via a transmission pin engaged with the spiral groove of the spiral shaft 21, and is integrally formed on the base side of the movable transfer cylinder 2. Concatenated. As shown in FIG. 1, the expansion / contraction driving device 19 is provided with limit sensors S1 and S2 on the reduction side and the expansion side, respectively, and automatically stops the expansion / contraction control motor 20 when the moving device 22 arrives. Yes.
[0011]
Although not specifically illustrated, the expansion / contraction control motor 20 is driven in the forward or reverse direction based on the ON operation of a switch (extension switch) provided on the operation panel of the cockpit. The spiral shaft 21 is configured to rotate, and if the spiral shaft 21 rotates forward, the movable transport cylinder 2 is extended via the engaged moving device 22, and if it is reversed, it is forcibly moved in the reduction direction. It is configured.
[0012]
In this way, the moving conveyance cylinder 2 is expanded and contracted along the cylinder in a state of being fitted to the fixed conveyance cylinder 15, and the position of the grain outlet 17 at the distal end portion is set with respect to the rooted cereal cylinder 12. Therefore, it is possible to select the position where the grain falls by adjusting the distance or the distance.
In FIG. 1, reference numeral 23 denotes an elevating hydraulic cylinder, 24 denotes a turning motor, 25 denotes a drive gear, and 26 denotes a turning gear.
[0013]
As shown in FIG. 1, the support roller 27 is provided so as to pivot on the top and bottom of the base position of the movable transport cylinder 2 and supports the peripheral surface of the fixed transport cylinder 15 while rolling. However, as shown in FIG. 5, the specific configuration is such that flanges 28 and 28 'are provided on both sides to engage with the guide 29 on the fixed conveying cylinder 15 side. As a result, the movable transfer cylinder 2 has a significantly reduced swinging phenomenon on the tip side during the expansion / contraction operation, as compared with a conventional drum-type roller.
[0014]
In the telescopic auger apparatus configured as described above, as shown in FIG. 1, the length of the fixed transport cylinder 15 is larger than the spiral shaft 21 that moves and expands the movable transport cylinder 2 in the longitudinal direction. It is configured to be longer toward the lower side. Then, when the movable conveyance cylinder 2 is extended to the maximum, the length of the portion where the movable conveyance cylinder 2 is fitted to the fixed conveyance cylinder 15 can be secured to a predetermined value or more, so that the movable conveyance cylinder 2 is stabilized. Thus, the movable conveying cylinder 2 can be stably expanded and contracted. (Fig. 6)
Next, FIGS. 7 and 8 will be described.
[0015]
In the configuration of another embodiment of the bearing boss 5 that supports the spiral portion 6 of the spiral unit 3a, the front sliding portion 30a and the rear sliding portion 30b are short in order to reduce the sliding resistance with the transmission shaft 4. It is configured to slide in the section, and the inside is configured by the space portion 30c. Further, the sealing member 31 is provided on the lower side of the front sliding part 30a in the grain conveying direction and the upper side of the rear sliding part 30b in the grain conveying direction.
[0016]
FIG. 8 shows a perspective view of the seal member 31. The seal member 31 is provided with a hexagonal hole 31a through which the hexagonal transmission shaft 4 can pass, and the hexagonal hole 31a is configured so that the hexagonal transmission shaft 4 passes tightly. Further, a cut 31b is provided so that the hexagonal transmission shaft 4 can be easily fitted into the hexagonal hole 31a. Thereby, since the dust adhering to the transmission shaft 4 can be removed, the single helix 3a can move smoothly. Further, since dust does not adhere to the transmission shaft 4 itself, it is possible to prevent dust from adhering to the spiral single body 3a.
[0017]
Instead of the seal member 31, an oil seal 32 used for preventing oil leakage of a normal transmission or the like as shown in FIGS. 9 and 10 may be used. The oil seal 32 has a hole 32a, but there is no problem even if the hexagonal transmission shaft 4 passes. That is, since the diameter of the hole 32a is small and the elasticity is large, the hexagonal transmission shaft 4 can be sufficiently adhered. Thereby, it is possible to prevent dust from adhering to the transmission shaft 4 and the spiral unit 3a.
[0018]
Next, FIGS. 11 and 12 will be described.
Instead of the sealing member 31, a brush body 33 having elasticity may be provided. As shown in FIG. 12, the brush body 33 has a configuration in which a brush 33b having the same elastic force is implanted on the upper surface of the base 33a having an elastic force. As shown in FIG. 11, the brush body 33 is rounded and provided on the lower side in the grain conveying direction of the front sliding portion 30a and on the upper side in the grain conveying direction of the rear sliding portion 30b. Since it is an elastic body, it is fixed with an adhesive so as not to come off. Accordingly, it is possible to prevent dust from adhering to the transmission shaft 4 and the spiral unit 3 in the same manner.
[0019]
[Brief description of the drawings]
[Fig. 1] Right side view of the combine [Fig. 2] Side view of the single helix [Fig. 3] Rear view of the single helix [Fig. 4] Side view of the single helix [Fig. 5] Cross section [Fig. 6] Grain Right side view of unloading auger [FIG. 7] Cross section [FIG. 8] Perspective view [FIG. 9] Cross section [FIG. 10] Perspective view [FIG. 11] Cross section [FIG. 12] Perspective view [Explanation of symbols]
2 Moving tube 3a Spiral unit 4 Transmission shaft 5 Bearing boss 6 Spiral unit 6 'Spiral unit of adjacent spiral unit
7 Protrusion 12 Flouring cylinder 15 Fixed conveying 16 Conveying spiral 17 Grain discharge port 18 Mounting member
27 Support roller
28 Flange
28 'flange
29 Guide

Claims

The base of the movable transfer cylinder (2), which connects the base of the fixed transfer cylinder (15) to the upper part of the whipped cylinder (12) and opens the grain discharge port (17) at the tip, is connected to the fixed transfer cylinder (15 Upon the leading end side Ru not slide freely fitted in), either side of the flange and Jikuka supporting roller (27) above and below the base provided the support rollers of the moving conveying cylinder (2) (27) (28 , 28 ′) is engaged with both outer sides of the two guides (29) on the fixed conveyance cylinder (15) side to extend and guide the movable conveyance cylinder (2), and the transmission shaft is formed on the square axis. The front end of (4) is supported at a position above the grain outlet (17) of the movable transport cylinder (2) and the rear part of the transmission shaft (4) is housed in the fixed transport cylinder (15). Inserted freely into the shaft of the spiral (16), and a large number of single spiral members (3a) are slidably fitted to the transmission shaft (4). In forming the series of expansion / contraction spirals (3), the mounting member (18) is formed in a substantially semi-cylindrical shape with respect to the bearing boss (5) that is slidably fitted to the transmission shaft (4). Te provided, bearing boss (5 contacting該隣also said adjacent spiral portion was what (6,6') by closest is attached a spiral portion (6) to the mounting member (18) formed in said substantially semi-cylindrical , 5 ') A spacer projection (7) is provided at the end of the bearing boss (5) so that there is no gap between the two and the distance between adjacent bearing bosses (5') can be maintained. The helix portions (6 ′) of the adjacent helix pieces (3a) are connected so that the helix portions (6, 6 ′) are connected to each other even if the helix pieces (3a) are spaced apart to the maximum. The spiral single body (3a) is configured by providing a spiral locking body (6a) that stops and prevents separation. Telescopic auger of the combine that with the butterflies.