JPH052993Y2 - - Google Patents

Description

【考案の詳細な説明】 （産業上の利用分野） 本案は、全量供給型コンバインのスクリユー式
脱穀機における受歯に関するものである。[Detailed description of the invention] (Field of industrial application) This invention relates to a receiving tooth in a screw-type threshing machine for a full-feed combine harvester.

（従来技術） 一般にスクリユー式脱穀機を具えたコンバイン
にあつては、掻込リールで掻込まれて刈刃で刈り
取られた穀稈が掻込オーガからフイーダーハウス
のチエーンコンベヤで扱室に運ばれ、スクリユー
式扱胴すなわちローターで脱穀される。(Prior art) Generally, in a combine harvester equipped with a screw-type threshing machine, the grain culm, which has been raked by a raking reel and cut by a cutting blade, is transported from the raking auger to a handling room by a chain conveyor in a feeder house. The grain is then threshed using a screw-type handling drum or rotor.

以上のようなローターでは、スクリユーに固定
の扱歯を設けている。 In the rotor described above, fixed handling teeth are provided on the screw.

（考案が解決しようとする課題） 以上のようなスクリユー式脱穀機のローターで
は、その扱歯で穀稈を掛け、受網当に穀粒を打ち
つけると共に、スクリユーで受網等に擦りつけて
脱穀する。しかし、稲等穀稈の切れにくい材料に
なると、扱歯にからみついて藁が扱歯から外れに
くくなり、扱室の流通性を低下させると共に多く
の藁がからみ合つて塊状になり詰り等の諸問題が
発生する。(Problem to be solved by the invention) The rotor of the screw-type threshing machine as described above hangs the grain culm with its handling teeth, hits the grains against the receiving net, and threshes by rubbing the grains against the receiving net etc. with the screw. do. However, when the grain culm is a material that is difficult to cut, such as rice, the straw becomes entangled with the handling teeth and becomes difficult to remove from the handling teeth, reducing the flowability of the handling room and causing a lot of straw to become entangled and form clumps, resulting in various problems such as clogging. A problem occurs.

（課題を解決するための手段） したがつて本案の技術的課題は、脱穀を促進さ
せることができる全量供給型コンバインのスクリ
ユー式脱穀機を提供しようとすることを目的とす
るもので、そのために次のような構成を採用する
ものである。(Means for solving the problem) Therefore, the technical problem of the present invention is to provide a screw-type threshing machine for a full-feed combine harvester that can accelerate threshing. The following configuration is adopted.

すなわち、ローターのスクリユーに設けた回転
により突出代が可変の扱歯とローター円周方向で
ラツプし、かつローターの軸方向では該扱歯と適
度の隙間をあけた受歯をスクリユーの搬送上手側
において受網又はローターカバーに設けたもので
ある。 In other words, a receiving tooth that wraps in the circumferential direction of the rotor with a handling tooth whose protrusion can be changed by rotation and that is provided on the screw of the rotor and has an appropriate gap between the handling tooth and the handling tooth in the axial direction of the rotor is placed on the upper side of the screw's conveyance side. It is installed on the receiving net or rotor cover.

（実施例） まず、スクリユー式脱穀機を具えたコンバイン
全体から説明する。(Example) First, the entire combine equipped with a screw-type threshing machine will be explained.

第６図において掻込リール１で掻込まれて刈刃
２で刈り取られた作物は、掻込オーガすなわちプ
ラツトホームオーガ３からフイーダーハウス４の
チエーンコンベア５で扱室６に運ばれ、スクリユ
ー式扱胴すなわちローター７で脱穀される。脱穀
されたものはクリンプ網８から揺動選別盤９上に
落下し選別される。 In FIG. 6, the crop that has been raked by the raking reel 1 and cut by the cutting blade 2 is conveyed from the raking auger, that is, the platform auger 3, to the handling room 6 by the chain conveyor 5 of the feeder house 4, The grain is threshed using a rotor 7. The threshed grains fall from the crimp net 8 onto a swinging sorting board 9 and are sorted.

この揺動選別盤９上で脱穀されたものは、選別
されるが長藁のみ後方の排塵口方向に運ばれる。
又、揺動選別盤９での選別物は唐箕１０による選
別風をうけて選別され、穀類は一番樋１１に、２
番物は２番樋１２に落下し、一番樋１１に落下し
た穀類は揚穀筒を介して籾タンクにはこばれ、２
番樋１２に落下した２番物は２番還元オーガ１３
で揺動選別盤９上に還元されるようになつてい
る。 The grains threshed on this swing sorting board 9 are sorted, but only the long straw is carried toward the rear dust outlet.
In addition, the materials to be sorted by the oscillating sorting board 9 are sorted by the sorting wind by the winnowing machine 10, and the grains are placed in the first gutter 11 and the second gutter.
The grains dropped into the second gutter 12, and the grains that fell into the first gutter 11 were thrown into the paddy tank through the grain lifting cylinder, and the grains fell into the first gutter 11.
The second item that fell into the gutter 12 is the second reduction auger 13
It is designed so that it is returned onto the oscillating sorting board 9.

以上のようなコンバインにおけるスクリユー式
脱穀機のスクリユー７ａにはローター７のスクリ
ユーに第５図の如き固定の扱歯１４がある。 The screw 7a of the screw-type threshing machine in the combine harvester as described above has fixed handling teeth 14 on the screw of the rotor 7 as shown in FIG.

ところで、スクリユー式脱穀機では扱歯１４で
穀稈を引掛け、受網８等に穀粒を打ちつけると共
に、スクリユー７ａで受網８等に擦りつけて脱穀
するようになつている。 By the way, in the screw type threshing machine, the grain culm is hooked with the handling teeth 14, and the grains are hit against the receiving net 8 etc., and the grains are rubbed against the receiving net 8 etc. with the screw 7a for threshing.

しかし、稲等穀稈の切れにくい材料になると、
扱歯１４に絡みついた藁が扱歯１４から外れにく
くなり、扱室６の流通性を低下させると共に多く
の藁が絡み合つて団子状になり詰まり易い。 However, when it comes to materials such as rice that are difficult to cut,
The straw entangled with the handling teeth 14 becomes difficult to come off from the handling teeth 14, reducing the flowability of the handling chamber 6, and a large amount of straw becomes entangled and forms a lump, which tends to cause clogging.

そこで、本案にあつては回転により突出代が可
変の扱歯１４とローター７の円周方向でラツプ
し、軸方向では適度の隙間ａを設けた受歯１５を
スクリユー７ａの送り作用面と反対側において受
網８の桟１６又はローターカバー６ａに設けたも
のである。 Therefore, in the present case, the handling tooth 14 whose protrusion distance is variable by rotation overlaps in the circumferential direction of the rotor 7, and the receiving tooth 15 with an appropriate gap a in the axial direction is arranged opposite to the feeding surface of the screw 7a. It is provided on the crosspiece 16 of the receiving net 8 or the rotor cover 6a on the side.

本案のものによれば、扱歯１４に掛つた藁を外
すと共に受歯１５と扱歯１４の作用により脱穀を
促進させ、脱穀性能が向上するようになつた。 According to the present invention, the straw caught on the handling teeth 14 is removed and threshing is promoted by the action of the receiving teeth 15 and the handling teeth 14, thereby improving the threshing performance.

しかして、スクリユー７ａの送り作用面と反対
側に受歯１５を設けたので搬送抵抗は弱く、スク
リユー、扱歯、受歯の変形破損を防止できる。 Since the receiving teeth 15 are provided on the side opposite to the feeding surface of the screw 7a, the conveying resistance is weak, and deformation and damage to the screw, handling teeth, and receiving teeth can be prevented.

第１図のものは受歯１５と扱歯１４との相関関
係を解り易くするために扱歯１４に固定式のもの
を示してあるが、本案はこの固定式の代わりに回
転により突出代が可変の扱歯を用いることを要旨
とするものである。 In the one in Figure 1, a fixed type is shown on the handling tooth 14 in order to make it easier to understand the correlation between the receiving tooth 15 and the handling tooth 14, but in this case, instead of this fixed type, the protrusion length is changed by rotation. The gist is to use variable handling teeth.

第３図のものは本案扱歯の１つの実施例を示す
もので扱歯の形状がスターホイルの形状をなして
いて扱歯のスクリユーからの突出代が回転で変え
られるようになつている。 The one in FIG. 3 shows one embodiment of the handling tooth according to the present invention, and the shape of the handling tooth is a star foil shape, so that the amount of protrusion of the handling tooth from the screw can be changed by rotation.

第３図のものによれば扱歯１４は軸１７で回動
自在に固定されるようになつており、歯１４ａの
ものはフイース角度αが30°、歯１４ｂのものは
フイース角度βが40°のものを示していて、歯１
４ｃ、歯１４ｄは歯先の高さが歯１４ａ，１４ｂ
のものに比べてＢと高いものＡと低いものが示し
てある。 According to the one in FIG. 3, the handling tooth 14 is rotatably fixed on a shaft 17, and the tooth 14a has a face angle α of 30°, and the tooth 14b has a face angle β of 40°. ° is shown, tooth 1
4c and tooth 14d, the height of the tooth tip is the same as that of teeth 14a and 14b.
B is higher than that, and A and lower are shown.

一般に扱歯が摩耗すると脱穀性能に影響するた
め交換の必要がおこる。従来の扱歯は作用面が１
〜２面であり、耐久性に問題があつた。 Generally, when the handling teeth wear out, it affects threshing performance and requires replacement. Conventional handling teeth have 1 working surface.
~2 sides, and there was a problem with durability.

以上のようなものであると、作用面が８面ある
ため耐久性が向上する。 With the structure described above, durability is improved because there are eight active surfaces.

又、スクリユー式脱穀機では扱歯の高さ、すな
わち突出代が非常に脱穀性能に影響する。 In addition, in screw-type threshing machines, the height of the handling teeth, that is, the protrusion amount, greatly affects the threshing performance.

すなわち、高さが低いときロスは大となるが馬
力は小となる。又扱歯の高さと共に扱歯の角度も
脱穀状態に影響するもので、フイース角度が小の
とき、ロスが少なくなるから馬力が大となる。そ
こで、一つの扱歯で作物条件に合わせて扱歯作用
を変化させ、最高の脱穀性能を引き出せる。 In other words, when the height is low, the loss is large but the horsepower is small. In addition to the height of the handling teeth, the angle of the handling teeth also affects the threshing condition; when the face angle is small, the loss is reduced and the horsepower is large. Therefore, the single handling tooth can change the handling tooth action according to the crop conditions to bring out the best threshing performance.

（考案の効果） 本案のものによれば、切歯でない受歯が扱歯に
対してローター円周方向でラツプし、かつロータ
ーの軸方向では適度の隙間をもたせて、スクリユ
ーの作用面と反対側において受網又はローターカ
バーに設けられているので、受歯で扱歯にかかつ
た藁を外すと共に、受歯と扱歯の作用により脱穀
を促進させて脱穀性能を向上させることができ
る。(Effect of the invention) According to the proposed invention, the receiving teeth that are not incisors wrap around the handling teeth in the circumferential direction of the rotor, and have an appropriate clearance in the axial direction of the rotor, which is opposite to the working surface of the screw. Since it is provided on the receiving net or rotor cover on the side, the receiving teeth can remove the straw stuck to the handling teeth, and the action of the receiving teeth and handling teeth can promote threshing and improve threshing performance.

しかも、スクリユーの送り作用面と反対側に受
歯を設けたので搬送抵抗は弱く、スクリユー、扱
歯、受歯、の変形破損を防止できる。 Moreover, since the receiving teeth are provided on the side opposite to the feeding surface of the screw, the conveying resistance is weak, and deformation and damage to the screw, handling teeth, and receiving teeth can be prevented.

更に、扱歯の突出代を変更することにより作物
条件に合わせて最高の脱穀性能を引き出せる。 Furthermore, by changing the protrusion of the handling teeth, the best threshing performance can be brought out according to the crop conditions.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は扱胴に固定式の扱歯を用いた扱室の切
断側面図、第２図は扱歯と受歯との関係を示す切
断平面図、第３図は本案の扱歯を示す側面図、第
４図は同上斜面図、第５図は従来の扱歯を示す側
面図、第６図はコンバイン全体図である。 ６……扱室、７……ロータ、８……受網、７ａ
……スクリユー、１４……扱歯、１５……受歯。 Figure 1 is a cutaway side view of a handling chamber using a fixed handling tooth on the handling barrel, Figure 2 is a cutaway plan view showing the relationship between the handling tooth and the receiving tooth, and Figure 3 shows the handling tooth of the present invention. FIG. 4 is a side view, FIG. 4 is a side view of the same as above, FIG. 5 is a side view showing a conventional handling tooth, and FIG. 6 is an overall view of the combine. 6... Handling room, 7... Rotor, 8... Receiving net, 7a
...screw, 14...handling tooth, 15...receiving tooth.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ローターのスクリユーに設けた回転により突出
代が可変の扱歯とローター円周方向でラツプし、
かつローターの軸方向では該扱歯と適度の隙間を
あけた受歯をスクリユーの搬送上手側において受
網又はローターカバーに設けたことを特徴とする
全量供給型コンバインのスクリユー式脱穀機にお
ける受歯。 The rotation of the screw provided on the rotor causes the protrusion to be variable, and the handling tooth wraps around the rotor in the circumferential direction.
A receiving tooth in a screw-type threshing machine for a full-feed combine harvester, characterized in that a receiving tooth with an appropriate clearance from the handling tooth in the axial direction of the rotor is provided on a receiving net or a rotor cover on the upper side of conveyance of the screw. .