JP2009240211A - Power transmission apparatus to pre-treating part of combine harvester - Google Patents

Power transmission apparatus to pre-treating part of combine harvester Download PDF

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JP2009240211A
JP2009240211A JP2008090309A JP2008090309A JP2009240211A JP 2009240211 A JP2009240211 A JP 2009240211A JP 2008090309 A JP2008090309 A JP 2008090309A JP 2008090309 A JP2008090309 A JP 2008090309A JP 2009240211 A JP2009240211 A JP 2009240211A
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power
transmission
clutch
reverse
transmission device
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Takayuki Ono
隆行 大野
Teruo Nishi
輝雄 西
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Kubota Corp
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Kubota Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a power transmission apparatus to a pre-treating part of a combine harvester for eliminating clogging of a transporting apparatus by reversely rotating and driving the transporting apparatus when the transporting apparatus of the pre-treating part of the combine harvester is clogged. <P>SOLUTION: The power transmission apparatus to the pre-treating apparatus 3 of the combine harvester is composed by installing the pre-treating part 3 equipped with the transporting apparatus for raising up and reaping grain culms, and transporting the reaped grain culms to a threshing apparatus 5 at the rear, and interposing a transmission apparatus 34 for normal rotation equipped with a clutch for disconnecting and connecting power to a driving system for transmitting the power subjected to a speed change with a speed change gear 26 to the pre-treating part 3, and a one-way clutch 30 for the normal rotation for transmitting normal rotation power so as to synchronize and drive the pre-treating part 3 at a speed in proportion to a traveling speed. A transmission apparatus 35 for reverse rotation for transmitting reverse rotation power in parallel to the transmission apparatus 34 for the normal rotation is installed, and a clutch 43 for connecting and disconnecting the reverse rotation power is installed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、エンジンの出力を正逆転伝動可能な変速装置を設け、この変速装置による変速により、駆動側プーリに一方向クラッチを備えたベルト伝動装置を介して前処理部に走行速度と比例した速度で同調駆動するように構成したコンバインの前処理部への動力伝達装置に関する。   The present invention is provided with a transmission capable of transmitting engine output in the forward and reverse directions, and the speed change by this transmission is proportional to the traveling speed in the preprocessing section via a belt transmission provided with a one-way clutch on the driving pulley. The present invention relates to a power transmission device to a pre-processing unit of a combine configured to be driven synchronously at a speed.

コンバインの前処理部への動力伝達装置として、穀稈を引起こす穀稈引起こし装置、引起こされた穀稈の株元部を刈取る刈取り装置、刈取られた穀稈を後方の脱穀装置に搬送する搬送装置を備えた前処理部を走行機体の前部に装備し、エンジンからの動力を正逆転並びに変速可能な変速装置を設け、この変速装置で変速された動力を走行装置に伝達するとともに、前記変速装置で変速された動力を前処理部に伝達する駆動系に動力を断接するクラッチ、及び、正転用一方向クラッチを備えた駆動側プーリと、被動側プーリとにベルトを巻回した正転用ベルト伝動装置を介装して、前記前処理部に走行速度と比例した速度で同調駆動するように構成したものがある(例えば特許文献1参照)。   As a power transmission device to the pre-processing unit of the combine, a culm pulling device that raises the cereal husk, a reaping device that cuts the stock of the raised culm, and the chopped husk to the rear threshing device A pre-processing unit having a transport device for transporting is provided at the front of the traveling machine body, a transmission that can shift the power from the engine in the forward and reverse directions is provided, and the power shifted by the transmission is transmitted to the traveling device. In addition, a belt is wound around a driving pulley having a forward / reverse one-way clutch and a driven pulley, and a driven pulley, which is connected to a driving system that transmits the power changed by the transmission to the preprocessing unit. In some cases, the pre-processing unit is configured to be synchronously driven at a speed proportional to the traveling speed through the forward belt transmission device (see, for example, Patent Document 1).

上記従来技術では、一筋の刈取りを終えて走行機体を旋回させるときに後進する必要あるときに変速装置を逆転させたとしても正転用一方向クラッチによって前処理部には逆転駆動力が作用しないから、刈取り搬送中の搬送装置は機体後進時に一時停止するだけで、逆駆動はしないから、搬送中の穀稈を逆戻ししないで搬送することができるものである。
特開2007−28980号公報
In the above prior art, even if the transmission is reversed when it is necessary to reverse when finishing the cutting of the line and turning the traveling machine body, the reverse driving force does not act on the preprocessing portion by the forward rotation one-way clutch. Since the conveying device during cutting and conveying is temporarily stopped when the machine is moving backward, it is not reversely driven, so that it can be conveyed without reversing the cereals being conveyed.
JP 2007-28980 A

上記の構成では、穀稈搬送中に詰まりが生じたときには、前処理部の駆動を停止させて、作業者が手作業で詰まっている穀稈を取り除かなければならず、多大な手間のかかるものであった。   In the above configuration, when clogging occurs during the transportation of cereals, the driving of the pre-processing unit must be stopped, and the worker must remove the cereals that are manually jammed, which takes a lot of trouble. Met.

本発明の目的は、機体を後進させるための駆動力を利用して、一時的に前処理部を逆転することによって詰まりを解消することのできる動力伝達装置を提供することにある。   An object of the present invention is to provide a power transmission device that can eliminate clogging by temporarily reversing a pretreatment unit using a driving force for moving the airframe backward.

上記の目的を達成するため、本発明のうちの請求項1に係る発明では、穀稈を引起こす穀稈引起こし装置、引起こされた穀稈の株元部を刈取る刈取り装置、刈取られた穀稈を後方の脱穀装置に搬送する搬送装置を備えた前処理部を走行機体の前部に装備し、エンジンからの動力を正逆転並びに変速可能な変速装置を設け、この変速装置で変速された動力を走行装置に伝達するとともに、変速装置で変速された動力を前処理部に伝達する駆動系に動力を断接するクラッチ、及び、正転動力を伝達する正転用一方向クラッチを備えた正転用伝動装置を介装して、前処理部に走行速度と比例した速度で同調駆動するように構成したコンバインの前処理部への動力伝達装置であって、正転用伝動装置と並列に、逆転動力を伝達するための逆転用伝動装置を設けるとともに、逆転動力を入り切りするクラッチを備えてあることを特徴とする。   In order to achieve the above-mentioned object, in the invention according to claim 1 of the present invention, a grain raising apparatus that raises the grain straw, a harvesting apparatus that harvests the root part of the raised grain straw, Equipped with a pre-processing unit equipped with a transport device that transports the cereal cereals to the rear threshing device, and provided with a transmission that can reverse and reverse the power from the engine. And a clutch for connecting / disconnecting the power to / from a drive system for transmitting the power shifted by the transmission to the pre-processing unit, and a one-way clutch for normal rotation for transmitting the normal rotation power. A power transmission device to the pre-processing unit of the combine configured to drive the pre-processing unit in a synchronized manner at a speed proportional to the traveling speed via a normal transmission device, in parallel with the normal transmission device, Reverse transmission for transmitting reverse power Provided with a, characterized in that are provided with a clutch for permitting and blocking reverse power.

請求項1に係る発明によると、常時は逆転動力を入り切りするクラッチを切っておくことにより、前進での刈取り作業中は、通常の刈取り作業が行えるとともに、圃場の畦際で後進するときは、逆転用伝動装置からは動力は伝動されず、正転用伝動装置へ伝達される逆転動力も正転用伝動装置に備えた一方向クラッチにより伝動されず、後進時に前処理部が逆駆動されることはないので、後進により刈取った搬送中の穀稈を圃場に放出してしまうような不都合はない。
搬送装置で搬送されている穀稈が詰まったときは、機体を一旦停止させて走行系の伝動を断ち、前処理部に対して逆転動力を入り切りするクラッチを入れて、前記変速装置を後進側に変速することにより、前処理部の逆転用伝動装置を介して前処理部に逆転駆動力を伝達することができるから、これにより穀稈の詰まりが生じた搬送装置を逆転させて詰まりを解消することができる。
例えば、搬送装置を少し逆転させて停止させることにより(逆転動力を入り切りするクラッチを切り側に操作したり、変速装置を中立位置に操作する)、搬送装置での穀稈の詰まり(噛み込み)が弱くなるので、この状態で作業者が搬送装置に詰まった穀稈を容易に
手で抜き取ることができる。又、搬送装置を少し逆転させて停止させることにより、搬送
装置に詰まった穀稈が自然に搬送装置から離れて落下することもある。
According to the first aspect of the present invention, by always cutting the clutch that turns on and off the reverse power, during the forward cutting operation, the normal cutting operation can be performed, and when moving backward at the edge of the field, No power is transmitted from the reverse transmission, and the reverse power transmitted to the forward transmission is not transmitted by the one-way clutch provided in the forward transmission, and the preprocessing unit is reversely driven during reverse travel. Since there is no, there is no inconvenience that the cereals being transported by the backward movement are released to the field.
When the cereals being transported by the transport device are clogged, the machine is temporarily stopped, the transmission of the traveling system is cut off, a clutch for turning on and off the reverse power to the pretreatment unit is inserted, and the transmission is moved to the reverse side Since the reverse drive force can be transmitted to the pretreatment unit via the reverse transmission device of the pretreatment unit, the conveying device in which the cereal clogging has occurred is reversed to eliminate the clogging. can do.
For example, by slightly rotating the conveyor device and stopping it (operating the clutch for turning on and off the reverse power to the disengagement side or operating the transmission to the neutral position), clogging of the cereals in the conveyor device (biting) Therefore, in this state, the worker can easily remove the cereals jammed in the conveying device by hand. Further, when the conveying device is slightly reversed and stopped, the cereal cakes jammed in the conveying device may naturally fall away from the conveying device.

請求項2に係る発明は、請求項1に記載の発明において、逆転用伝動装置に逆転動力を伝達する一方向クラッチを備えたものである。   According to a second aspect of the present invention, in the first aspect of the invention, a one-way clutch that transmits reverse power to the reverse transmission is provided.

請求項2に係る発明によると、逆転動力を入り切りするクラッチに加えて、逆転用伝動装置に逆転動力を伝達する一方向クラッチを備えている。これにより、逆転動力を入り切りするクラッチを入れた状態において、変速装置を正転させると、正転用伝動装置を介して前処理部及び搬送装置が正転し(逆転用伝動装置において、逆転動力を伝達する一方向クラッチにより正転動力が遮断される)、変速装置を逆転させると、逆転用伝動装置を介して前処理部及び搬送装置が逆転する(正転用伝動装置において、正転用一方向クラッチにより逆転動力が遮断される)。このように、前処理部及び搬送装置を正転及び逆転させることにより、搬送装置に詰まった穀稈が自然に搬送装置から離れて落下するような状態が期待できる。
通常の刈取りにおいて、逆転動力を入り切りするクラッチを切っておくことにより、逆転動力を伝達する一方向クラッチにより正転動力が遮断されると言う状態が生じなくなるので、逆転動力を伝達する一方向クラッチに掛かる負荷が小さくなり、逆転動力を伝達する一方向クラッチの耐久性を向上させることができる。
According to the invention which concerns on Claim 2, in addition to the clutch which turns on and off reverse rotation power, the one-way clutch which transmits reverse rotation power to the reverse transmission is provided. As a result, when the transmission is rotated in the forward direction with the clutch for turning on and off the reverse rotation power, the pre-processing unit and the conveying device are rotated forward via the normal transmission (the reverse transmission power is reduced in the reverse transmission). When the transmission is reversed, the pre-processing unit and the conveying device are reversed via the reverse transmission (the one-way clutch for normal rotation in the normal transmission). The reverse power is cut off by In this way, by rotating the pretreatment unit and the conveyance device in the normal direction and reverse direction, it is possible to expect a state in which the cereals packed in the conveyance device naturally fall away from the conveyance device.
In normal reaping, the one-way clutch that transmits the reverse power is prevented by cutting the clutch that turns the reverse power on and off, so that the one-way clutch that transmits the reverse power no longer interrupts the normal power. As a result, the load applied to the vehicle is reduced, and the durability of the one-way clutch for transmitting the reverse rotation power can be improved.

請求項3に係る発明は、請求項1または2に記載の発明において、逆転用伝動装置を伝動ベルトを備えたベルト伝動装置に構成し、逆転動力を入り切りするクラッチは、逆転用伝動装置に備えたテンションクラッチである。   The invention according to claim 3 is the invention according to claim 1 or 2, wherein the reverse transmission is configured as a belt transmission having a transmission belt, and the clutch for turning on and off the reverse rotation power is provided in the reverse transmission. Tension clutch.

逆転用伝動装置をベルト伝動装置とし、これにテンションクラッチを備えているので、簡易な構造で、前処理部に動力を伝達するクラッチ付きの伝動装置を構成することができる。   Since the reverse transmission device is a belt transmission device and includes a tension clutch, a transmission device with a clutch that transmits power to the pretreatment unit can be configured with a simple structure.

請求項4に係る発明は、請求項1〜3に記載の発明において、変速装置で変速された動力を前処理部に伝達する駆動系に動力を断接するクラッチは、正転用及び逆転用伝動装置よりも伝動上手側に設けたミッションケース内に設けている。   According to a fourth aspect of the present invention, in the first to third aspects of the present invention, the clutch for connecting / disconnecting the power to the drive system for transmitting the power shifted by the transmission to the pre-processing unit is a transmission device for forward rotation and reverse rotation. It is installed in the mission case provided on the better transmission side.

前処理部への動力を断接するクラッチをミッションケース内に設けたことにより、当該前処理用のクラッチの入り切りにより、刈取り作業中には前処理部を駆動させ、圃場間の移動時などの非作業には前処理部への動力を断って安全に移動することができる。   By providing a clutch for connecting / disconnecting power to / from the pretreatment unit in the transmission case, the pretreatment unit is driven during the cutting operation by turning the pretreatment clutch on and off, and when moving between fields, etc. In the work, the power to the pre-processing unit can be cut off and moved safely.

請求項5に係る発明は、請求項1〜3に記載の発明において、正転用伝動装置を伝動ベルトを備えたベルト伝動装置に構成し、変速装置で変速された動力を前処理部に伝達する駆動系に動力を断接するクラッチは、正転用伝動装置に備えたテンションクラッチである。   According to a fifth aspect of the present invention, in the first to third aspects of the present invention, the forward transmission device is configured as a belt transmission device including a transmission belt, and the power shifted by the transmission device is transmitted to the preprocessing unit. The clutch for connecting / disconnecting power to / from the drive system is a tension clutch provided in the forward transmission.

正転用伝動装置をベルト伝動装置とし、これにテンションクラッチを備えているので、簡易な構造で、前処理部に動力を伝達するクラッチ付きの伝動装置を構成することができる。   Since the forward transmission device is a belt transmission device and is equipped with a tension clutch, a transmission device with a clutch that transmits power to the pretreatment unit can be configured with a simple structure.

請求項6に係る発明は、請求項1〜5に記載の発明において、搬送装置を株元挟持搬送装置と穂先係止搬送装置とで構成するとともに、正転用伝動装置の伝動下手側に穂先係止搬送装置への動力の伝達を断つクラッチを設けたものである。   The invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein the conveying device is constituted by a stock holding-carrying conveying device and a tip locking conveying device, and the tip is connected to the lower transmission side of the forward transmission device. A clutch is provided to cut off the transmission of power to the stop conveyance device.

穀稈の詰まりは通常株元部の搬送装置に生じる。他方、穂先係止搬送装置は、通常穀稈を係止しながら搬送するための係止爪を備えているが、係止爪は搬送領域では突出させて穀稈を係止し、非搬送領域(裏側)では、搬送チェーンに沿う姿勢に倒伏させて移動させる起伏爪であり、その構成上、係止搬送装置を逆転させると係止爪の逆起伏がうまくいかずに係止爪を破損させてしまう虞がある。   Clogging of cereals usually occurs in the stock unit transport device. On the other hand, the tip locking and conveying device is provided with a locking claw for normally transferring the grain candy while it is locked, but the locking claw protrudes in the conveyance area to lock the corn straw, and the non-conveying area (Back side) is a raising and lowering claw that moves in a posture along the conveying chain. Due to its structure, when the locking and conveying device is reversed, the locking claw does not work properly and breaks the locking claw. There is a risk that.

請求項6の発明によれば、穂先係止搬送装置への動力の伝達を断つクラッチを設けてあるので、詰まりが発生して、前処理部を逆駆動させるときに、前記クラッチを切り操作することにより、穂先係止搬送装置を駆動させないで、他の前処理部の装置類を逆駆動させるので、逆駆動によって装置を破損させることなく、詰まりを解消することができる利点がある。   According to the sixth aspect of the present invention, since the clutch that cuts off the transmission of power to the tip locking and conveying device is provided, when the clogging occurs and the pretreatment unit is driven in reverse, the clutch is operated to be turned off. Thus, since the devices of the other pretreatment units are reversely driven without driving the tip locking conveying device, there is an advantage that clogging can be eliminated without damaging the device by reverse driving.

図1に、自脱型のコンバインの前部の側面図が、また、図2にその平面図がそれぞれ示されている。このコンバインは、左右一対のクローラ走行装置1を備えた走行機体2の前部に6条刈り仕様の前処理部3が昇降自在に連結されるとともに、走行機体2に運転部4、脱穀装置5及び穀粒回収タンク6等が搭載された構造となっている。   FIG. 1 is a side view of the front portion of the self-removable combine, and FIG. 2 is a plan view thereof. In this combine, a pre-processing unit 3 having a six-row cutting specification is connected to a front part of a traveling machine body 2 including a pair of left and right crawler traveling devices 1, and a driving unit 4 and a threshing device 5 are connected to the traveling machine body 2. And the grain recovery tank 6 etc. are mounted.

前処理部3には伝動ケースを兼用した前処理部フレーム10が備えられており、この前処理部フレーム10の後端基部が、走行機体2の前端部に立設された支持台11の上部に横向きの支点Pを中心として上下揺動可能に連結支持されるとともに、油圧シリンダ12で上下に駆動揺動されるようになっている。前処理部フレーム10には、植立穀稈を所定の刈取り姿勢に引起こす引起こし装置13、引起こした植立穀稈を切断するバリカン型の刈取り装置14、刈取った穀稈を後方に軽く掻き込む補助搬送ベルト15、穀稈の株元を後方に掻き込み搬送する回転パッカ16、穀稈を2条づつ刈幅内の中間部位に搬送して合流する3組の合流搬送装置17,18,19、及び合流された穀稈を脱穀装置5の横外側に備えられたフィードチェーン7の始端部にまで搬送する供給搬送装置20等が支持されている。   The pre-processing unit 3 includes a pre-processing unit frame 10 that also serves as a transmission case, and a rear end base portion of the pre-processing unit frame 10 is an upper portion of a support base 11 that is erected on the front end of the traveling machine body 2. In addition, it is connected and supported so as to be swingable up and down around a lateral fulcrum P, and is driven to swing up and down by a hydraulic cylinder 12. In the pre-processing unit frame 10, a pulling device 13 that raises the planted culm to a predetermined cutting posture, a clipper-type cutting device 14 that cuts the raised planting culm, and the harvested culm backward Auxiliary conveyor belt 15 for lightly scraping, a rotary packer 16 for scraping and transporting the cereal stock, and three sets of merging and transporting devices 17 for transporting and merging the cereal to the intermediate part within the cutting width by two lines, 18 and 19 and a supply / conveyance device 20 that conveys the merged cereal to the start end of the feed chain 7 provided on the lateral outer side of the threshing device 5 are supported.

機体左側の前記合流搬送装置17は、左2条の穀稈の株元を挟持搬送する株元挟持搬送装置17aと穂先を係止搬送する穂先係止搬送装置17bとで構成され、中央部の前記合流搬送装置18は、中2条用の株元挟持搬送装置18aと穂先係止搬送装置18bとで構成され、また、右側の前記合流搬送装置19は、右2条用の株元挟持搬送装置19aと穂先係止搬送装置19bとから構成されている。そして、各株元挟持搬送装置17a、18a,19aの前端に前記補助搬送ベルト15および回転パッカ16がそれぞれ装備されるとともに、2条単位で臨設する回転パッカ16同士が噛み合い連動されている。   The merging and transporting device 17 on the left side of the machine body is composed of a stock holding and transporting device 17a that sandwiches and transports the stocks of the left two grains, and a tip locking and transporting device 17b that locks and transports the head, The merging / conveying device 18 is constituted by a stock holding / carrying device 18a and a tip locking / conveying device 18b for two middle strips. It is comprised from the apparatus 19a and the tip latching conveying apparatus 19b. The auxiliary conveying belt 15 and the rotating packer 16 are provided at the front ends of the stock holding and conveying apparatuses 17a, 18a, and 19a, respectively, and the rotating packers 16 that are erected in units of two lines are meshed with each other.

前記供給搬送装置20は、右2条の合流箇所近くからフィードチェーン7の前方まで延出された穂先係止搬送装置21と、前記合流搬送装置17,18,19の合流箇所から後方に延出された株元挟持搬送装置22と、フィードチェーン7の前方に配備された横回し型の中継搬送装置23とから構成されており、合流搬送装置17,18,19で合流された穀稈を立姿勢で受取り、後方上方に搬送しながら穀稈を横倒れ姿勢に変更し、フィードチェーン7の始端部に横倒れ姿勢で受け渡す機能を発揮する。   The supply / conveyance device 20 extends rearward from the confluence of the tip end locking / conveyance device 21 extending from the vicinity of the right two merging points to the front of the feed chain 7 and the merging / conveying devices 17, 18, and 19. The stock holding / carrying device 22 and the horizontally-turned relay conveying device 23 arranged in front of the feed chain 7 are used to stand the cereals joined by the merging / conveying devices 17, 18, and 19. The cereals are received in a posture, changed to a laterally tilted posture while being conveyed rearward and upward, and delivered to the starting end of the feed chain 7 in a laterally tilted posture.

ここで、前記株元挟持搬送装置22は、前部支点を中心に上下揺動して搬送終端位置を稈長方向に変更することで、フィードチェーン7への穀稈受け渡し位置を稈長方向に変更して脱穀装置5への穀稈挿入長さを変更調節する扱き深さ調節機能が備えられている。   Here, the stock holding and conveying device 22 swings up and down around the front fulcrum and changes the conveyance end position in the cocoon length direction, thereby changing the corn straw delivery position to the feed chain 7 in the cocoon length direction. A handling depth adjusting function for changing and adjusting the length of the culm inserted into the threshing device 5 is provided.

上記のように構成された前処理部3の伝動構造の概略が図3に示されている。
前記運転部4における座席下方に配備されたエンジン25からの動力は2系統に分岐され、その一方の分岐動力が走行用主変速装置としての静油圧式無段変速装置(HST)26にベルト伝達され、その変速動力がミッションケース27でギヤ変速されて左右のクローラ走行装置1に伝達される。静油圧式無段変速装置26は運転部4に備えた主変速レバー28に機械連係されており、この主変速レバー28を中立位置から前方あるいは後方に操作することで零速発進と前進あるいは後進への無段変速を行うことができるようになっている。また、エンジン動力の他方の分岐動力は脱穀装置5にベルト伝達され、フィードチェーン7と脱穀および選別用の各作動機構が駆動される。
An outline of the transmission structure of the pre-processing unit 3 configured as described above is shown in FIG.
The power from the engine 25 disposed under the seat in the driving unit 4 is branched into two systems, and one of the branch powers is transmitted to a hydrostatic continuously variable transmission (HST) 26 as a main transmission for traveling. Then, the transmission power is gear-shifted by the transmission case 27 and transmitted to the left and right crawler traveling devices 1. The hydrostatic continuously variable transmission 26 is mechanically linked to a main transmission lever 28 provided in the operation unit 4. By operating the main transmission lever 28 forward or backward from a neutral position, zero speed start and forward or reverse travel are performed. Can be continuously variable. Further, the other branching power of the engine power is transmitted to the threshing device 5 as a belt, and the feed chain 7 and the threshing and sorting operating mechanisms are driven.

前記静油圧式無段変速装置26から走行系に伝動される変速出力の一部がミッションケース27に備えられたPTO軸29に分岐伝達され、このPTO軸29の回転動力が一方向クラッチ30,31を備えたベルト式伝動装置32を介して取り出されて前処理部3に伝達される。   A part of the shift output transmitted from the hydrostatic continuously variable transmission 26 to the traveling system is branched and transmitted to the PTO shaft 29 provided in the transmission case 27, and the rotational power of the PTO shaft 29 is transmitted to the one-way clutch 30, It is taken out via a belt type transmission device 32 provided with 31 and transmitted to the pretreatment unit 3.

前処理部3おける前記前処理部フレーム10の基端部には、前処理部3の支点Pと同芯にカウンタ軸33が横架されており、このカウンタ軸33にPTO軸29からの前記動力がベルト式伝動装置32に伝達される。カウンタ軸33に伝達された動力の一部は、前処理部フレーム10の内部を通して前処理部前部に伝達され、引起こし装置13、刈取り装置14、補助搬送ベルト15、回転パッカ16、合流流搬送装置17,18,19及び供給搬送装置20の株元挟持搬送装置22が駆動される。また、カウンタ軸33に伝達された動力の一部が軸端部から上方に取り出されて、供給搬送装置20の穂先係止搬送装置21と中継搬送装置23が駆動される。   A counter shaft 33 is horizontally mounted on the base end portion of the preprocessing unit frame 10 in the preprocessing unit 3 so as to be concentric with the fulcrum P of the preprocessing unit 3, and the counter shaft 33 extends from the PTO shaft 29. The power is transmitted to the belt type transmission device 32. A part of the motive power transmitted to the counter shaft 33 is transmitted to the front part of the pretreatment part through the inside of the pretreatment part frame 10, and the pulling device 13, the mowing device 14, the auxiliary transport belt 15, the rotary packer 16, the merging flow The stock holding and conveying device 22 of the conveying devices 17, 18, 19 and the supply conveying device 20 is driven. Further, part of the power transmitted to the counter shaft 33 is extracted upward from the shaft end portion, and the tip locking transport device 21 and the relay transport device 23 of the supply transport device 20 are driven.

前記ベルト式伝動装置32は、刈取り作業時に動力を伝達するための正転用伝動装置34と、穀稈の詰まりが発生したり、メンテナンスを行うときに逆転駆動させる逆転用伝動装置35とからなる。
図4、図5に示すように、正転用伝動装置34及び逆転用伝動装置35は、それぞれPTO軸29に設けた駆動側プーリ36,37と、カウンタ軸33に設けた被動側プーリ38,39と、駆動側プーリ36,37と被動側プーリ38,39とにそれぞれ巻回したベルト40,41と、ベルト40,41を押圧・押圧解除して駆動側プーリ36,37から被動側プーリ38,39への動力を断接するベルトテンションクラッチ42,43とで構成されている。
The belt-type transmission device 32 includes a forward transmission device 34 for transmitting power during the cutting operation, and a reverse transmission device 35 that is reversely driven when cereal clogging occurs or maintenance is performed.
As shown in FIGS. 4 and 5, the forward transmission device 34 and the reverse transmission device 35 include a driving pulley 36 and 37 provided on the PTO shaft 29 and a driven pulley 38 and 39 provided on the counter shaft 33, respectively. The belts 40 and 41 wound around the driving pulleys 36 and 37 and the driven pulleys 38 and 39, respectively, and pressing and releasing the belts 40 and 41 from the driving pulleys 36 and 37 to the driven pulley 38, Belt tension clutches 42 and 43 for connecting / disconnecting power to / from 39.

図5、図6に示すように、正転用伝動装置34の駆動側プーリ36には、刈取り作業を行う正転時にのみ動力を伝達し、逆転時は駆動側プーリ36を回転させない一方向クラッチ30を設けており、逆転用伝動装置35の駆動側プーリ37には、穀稈の詰まりが発生したり、メンテナンスを行うときに前処理部3の搬送装置を逆転駆動させ、正転時には駆動側プーリ37を回転させない一方向クラッチ31を設けている。   As shown in FIGS. 5 and 6, the one-way clutch 30 transmits power to the driving pulley 36 of the forward transmission 34 only during forward rotation when performing a cutting operation, and does not rotate the driving pulley 36 during reverse rotation. The drive-side pulley 37 of the reverse transmission 35 is driven by reverse rotation of the conveying device of the pre-processing unit 3 when clogging occurs or maintenance is performed, and during normal rotation, the drive-side pulley A one-way clutch 31 that does not rotate 37 is provided.

図7に示すように、前処理部3のフレーム10に内蔵した伝動軸44からベベルギヤ45,46を介して、搬送装置の一つである株元挟持搬送装置18aの挟持用チェーンを巻回する駆動スプロケット47と穂先係止搬送装置18bの係止用チェーンを巻回する駆動スプロケット48へ動力と伝達するように構成されている。穂先係止搬送装置18bの駆動スプロケット48に対しては、レバー49を切換えて、図外の係止部に係合させて位置保持することにより、動力を断つ状態と動力を伝動する状態とに入り切りできる穂先搬送用のクラッチ50を備えている。これと同様な穂先搬送用のクラッチ50は、他の穂先係止搬送装置17b,19b,21にも設けてある。   As shown in FIG. 7, the chain for clamping of the stock holding and conveying device 18a, which is one of the conveying devices, is wound from the transmission shaft 44 built in the frame 10 of the preprocessing unit 3 via the bevel gears 45 and 46. The driving sprocket 47 is configured to transmit power to the driving sprocket 48 that winds the locking chain of the tip locking conveying device 18b. With respect to the drive sprocket 48 of the tip locking and conveying device 18b, the lever 49 is switched and engaged with the locking portion (not shown) to hold the position, so that the power is cut off and the power is transmitted. It has a tip conveying clutch 50 that can be turned on and off. A similar tip transfer clutch 50 is also provided in the other tip locking transfer devices 17b, 19b, and 21.

従って、収穫作業での前進走行においては、逆転用伝動装置35のベルトテンションクラッチ43を切るとともに、正転用伝動装置34のベルトテンションクラッチ42を入り状態にして、静油圧式無段変速装置26を前進操作すると、PTO軸29からの出力が正転用伝動装置34を介して前処理部3の各部に伝達され、静油圧式無段変速装置26を増速操作するに連れてPTO軸29からの出力が走行速度と正比例して高速となり、前処理部3の各部が走行速度と同調した速度で駆動されることになる。   Accordingly, during forward traveling in the harvesting operation, the belt tension clutch 43 of the reverse transmission 35 is disengaged and the belt tension clutch 42 of the forward transmission 34 is engaged so that the hydrostatic continuously variable transmission 26 is operated. When the forward operation is performed, the output from the PTO shaft 29 is transmitted to each part of the preprocessing unit 3 via the forward transmission 34 and the speed from the PTO shaft 29 is increased as the hydrostatic continuously variable transmission 26 is increased. The output becomes high in direct proportion to the traveling speed, and each part of the preprocessing unit 3 is driven at a speed synchronized with the traveling speed.

刈取り作業中に搬送中の穀稈が搬送装置に詰まった場合は、一旦走行を停止し、図外の走行用の副変速装置を中立にした状態で、正転用伝動装置34のベルトテンションクラッチ42を切るとともにレバー49の操作で必要な穂先係止搬送装置17b,18b,19b,21のクラッチ50を切り操作し、逆転用伝動装置35のベルトテンションクラッチ43を入り状態にして、静油圧式無段変速装置26を後進側に微小操作すると、PTO軸29からの出力が逆転用伝動装置35を介して前処理部3の各部の搬送装置が逆転駆動されて、詰まりを解消することができる。これでも穀稈が取り除くことができないときは、正転用伝動装置34のベルトテンションクラッチ42を入れて、静油圧式無段変速装置26を前後に微小作動させれば、搬送装置が小刻みに前後動して、咬み込んだ穀稈を振るい落とすことができ、詰まりを解消しやすくなる。   If the cereal grains being transported are jammed in the transport device during the mowing operation, the travel is temporarily stopped and the belt tension clutch 42 of the forward transmission 34 is set in a state where the travel sub-transmission device (not shown) is neutral. And the clutch 50 of the tip locking transport devices 17b, 18b, 19b, 21 required by the operation of the lever 49 is turned off, and the belt tension clutch 43 of the reverse transmission 35 is turned on, so that the hydrostatic When the stepped transmission 26 is slightly operated to the reverse side, the output from the PTO shaft 29 is reversely driven through the reverse transmission 35 to drive the conveying devices of the respective parts of the preprocessing unit 3 to eliminate clogging. If the cereals cannot be removed even after this, the belt tension clutch 42 of the forward transmission 34 is inserted and the hydrostatic continuously variable transmission 26 is operated slightly back and forth. Thus, the bitten cereal can be shaken off, and clogging can be easily eliminated.

〔別の実施の形態〕
(1)上記実施の形態では、逆転用伝動装置35の駆動側プーリ37に一方向クラッチ31を設けたが、この一方向クラッチ31は省略してもよい。
(2)正転用伝動装置34及び逆転用伝動装置35としては、ベルト伝動の他、チェーンで伝動する装置、ギヤで伝動する装置、その他べベルギヤ等を備えた軸伝動構造であってもよい。
(3)正転用伝動装置34の動力を断つクラッチとしては、テンションクラッチ43に代えて、ミッションケース内に摩擦クラッチや噛み合いクラッチとして設けてもよく、又、テンションクラッチ43に加えてミッションケース内に上記クラッチを設けてもよい。
(4)逆転用伝動装置35のクラッチとしては、テンションクラッチ43に代えて、駆動側プーリ36と37の間に噛み合いクラッチを設けてもよい。
[Another embodiment]
(1) Although the one-way clutch 31 is provided in the drive pulley 37 of the reverse transmission 35 in the above embodiment, the one-way clutch 31 may be omitted.
(2) The forward transmission 34 and the reverse transmission 35 may be a belt transmission, a chain transmission device, a gear transmission device, a shaft transmission structure including a bevel gear or the like.
(3) As a clutch for cutting off the power of the transmission device 34 for forward rotation, a friction clutch or a meshing clutch may be provided in the transmission case instead of the tension clutch 43. The clutch may be provided.
(4) As a clutch of the reverse transmission 35, a meshing clutch may be provided between the drive pulleys 36 and 37 instead of the tension clutch 43.

コンバインの全体側面図Combine side view 刈取り部の平面図Top view of the cutting part 伝動系統図Transmission system diagram ベルト式伝動装置の側面図Side view of belt-type transmission 一方向クラッチを備えた駆動側プーリの縦断正面図Longitudinal front view of drive pulley with one-way clutch 一方向クラッチを備えた駆動側プーリの縦断側面図Vertical side view of drive pulley with one-way clutch 搬送装置の駆動部を示す一部縦断面図Partial longitudinal sectional view showing the drive unit of the transport device

符号の説明Explanation of symbols

1 走行装置
3 前処理部
5 脱穀装置
13 引起こし装置
14 刈取り装置
17,18,19 合流搬送装置
20 供給搬送装置
21 穂先係止搬送装置
22 株元挟持搬送装置
23 中継搬送装置
25 エンジン
26 静油圧式無段変速装置
27 ミッションケース
30,31 一方向クラッチ
34 正転用伝動装置
35 逆転用伝動装置
40,41 伝動ベルト
42,43 ベルトテンションクラッチ
50 クラッチ
DESCRIPTION OF SYMBOLS 1 Traveling device 3 Pre-processing part 5 Threshing device 13 Pulling device 14 Mowing device 17, 18, 19 Combined conveyance device 20 Supply conveyance device 21 Ear tip latching conveyance device 22 Stock source pinching conveyance device 23 Relay conveyance device 25 Engine 26 Hydrostatic pressure Type continuously variable transmission 27 transmission case 30, 31 one-way clutch 34 forward rotation transmission 35 reverse rotation transmission 40, 41 transmission belt 42, 43 belt tension clutch 50 clutch

Claims (6)

穀稈を引起こす穀稈引起こし装置、引起こされた穀稈の株元部を刈取る刈取り装置、刈取られた穀稈を後方の脱穀装置に搬送する搬送装置を備えた前処理部を走行機体の前部に装備し、エンジンからの動力を正逆転並びに変速可能な変速装置を設け、この変速装置で変速された動力を走行装置に伝達するとともに、前記変速装置で変速された動力を前処理部に伝達する駆動系に動力を断接するクラッチ、及び、正転動力を伝達する正転用一方向クラッチを備えた正転用伝動装置を介装して、前記前処理部を走行速度と比例した速度で同調駆動するように構成したコンバインの前処理部への動力伝達装置において、
前記正転用伝動装置と並列に逆転動力を伝達するための逆転用伝動装置を設けるとともに、逆転動力を入り切りするクラッチを備えてあることを特徴とするコンバインの前処理部への動力伝達装置。
Travels through a pre-processing unit equipped with a cereal pulling device that raises cereals, a reaping device that cuts the stock of the cereals that have been raised, and a transport device that transports the harvested cereals to the rear threshing device Equipped at the front of the fuselage, a transmission is provided that can shift the power from the engine in the forward and reverse directions, and the power shifted by this transmission is transmitted to the traveling device, and the power shifted by the transmission is forwarded. The pre-processing unit is proportional to the traveling speed by including a clutch for connecting / disconnecting power to / from a drive system that transmits to the processing unit and a forward transmission device including a one-way clutch for normal rotation that transmits normal driving power. In the power transmission device to the pre-processing unit of the combine configured to be driven synchronously with the speed,
A power transmission device for a pre-processing section of a combine, comprising a reverse transmission device for transmitting reverse power in parallel with the forward transmission device, and a clutch for turning on and off the reverse power.
前記逆転用伝動装置に逆転動力を伝達する一方向クラッチを備えている請求項1記載のコンバインの前処理部への動力伝達装置。   The power transmission device to the pre-processing part of a combine according to claim 1, further comprising a one-way clutch that transmits reverse power to the reverse transmission device. 前記逆転用伝動装置を伝動ベルトを備えたベルト伝動装置に構成し、逆転動力を入り切りする前記クラッチは、前記逆転用伝動装置に備えたテンションクラッチである請求項1または2記載のコンバインの前処理部への動力伝達装置。   The pre-processing of a combine according to claim 1 or 2, wherein the reverse transmission device is configured as a belt transmission device including a transmission belt, and the clutch for turning on and off the reverse rotation power is a tension clutch provided in the reverse transmission device. Power transmission device to the part. 前記変速装置で変速された動力を前処理部に伝達する駆動系に動力を断接するクラッチは、前記正転用及び逆転用伝動装置よりも伝動上手側に設けたミッションケース内に設けている請求項1〜3のいずれか一項に記載のコンバインの前処理部への動力伝達装置。   A clutch for connecting / disconnecting power to a drive system that transmits power shifted by the transmission to a pre-processing unit is provided in a transmission case provided closer to the transmission than the transmission device for forward rotation and reverse rotation. The power transmission apparatus to the pre-processing part of the combine as described in any one of 1-3. 前記正転用伝動装置を伝動ベルトを備えたベルト伝動装置に構成し、前記変速装置で変速された動力を前処理部に伝達する駆動系に動力を断接するクラッチは、前記正転用伝動装置に備えたテンションクラッチである請求項1〜3のいずれか一項に記載のコンバインの前処理部への動力伝達装置。   The forward rotation transmission device is configured as a belt transmission device including a transmission belt, and a clutch that connects and disconnects power to a drive system that transmits the power shifted by the transmission device to a preprocessing unit is provided in the forward rotation transmission device. The power transmission apparatus to the pre-processing part of a combine as described in any one of Claims 1-3 which is a tension clutch. 前記搬送装置を株元挟持搬送装置と穂先係止搬送装置とで構成するとともに、前記正転用伝動装置の伝動下手側に前記穂先係止搬送装置への動力の伝達を断つクラッチを設けてある請求項1〜5のいずれか一項に記載のコンバインの前処理部への動力伝達装置。   The transport device is composed of a stock holding and transport device and a tip locking transport device, and a clutch for cutting off transmission of power to the head locking transport device is provided on the lower transmission side of the forward transmission device. The power transmission device to the pre-processing part of a combine as described in any one of claim | item 1 -5.
JP2008090309A 2008-03-31 2008-03-31 Power transmission apparatus to pre-treating part of combine harvester Pending JP2009240211A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012213342A (en) * 2011-03-31 2012-11-08 Kubota Corp Normal type combine harvester
JP2013039092A (en) * 2011-08-18 2013-02-28 Mitsubishi Agricultural Machinery Co Ltd Combine harvester
CN104186117A (en) * 2014-09-05 2014-12-10 马振忠 Harvester header reversing device
CN106105547A (en) * 2015-05-07 2016-11-16 大同工业株式会社 United reaper
CN106105548A (en) * 2015-05-07 2016-11-16 大同工业株式会社 United reaper
JP2016202086A (en) * 2015-04-23 2016-12-08 三菱マヒンドラ農機株式会社 Combine-harvester
JP2020065502A (en) * 2018-10-26 2020-04-30 三菱マヒンドラ農機株式会社 Combine
JP2020065501A (en) * 2018-10-26 2020-04-30 三菱マヒンドラ農機株式会社 Combine
JP2022001025A (en) * 2020-06-19 2022-01-06 株式会社クボタ Head-feeding combine

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012213342A (en) * 2011-03-31 2012-11-08 Kubota Corp Normal type combine harvester
JP2013039092A (en) * 2011-08-18 2013-02-28 Mitsubishi Agricultural Machinery Co Ltd Combine harvester
CN104186117A (en) * 2014-09-05 2014-12-10 马振忠 Harvester header reversing device
JP2016202086A (en) * 2015-04-23 2016-12-08 三菱マヒンドラ農機株式会社 Combine-harvester
CN106105547A (en) * 2015-05-07 2016-11-16 大同工业株式会社 United reaper
CN106105548A (en) * 2015-05-07 2016-11-16 大同工业株式会社 United reaper
JP2020065502A (en) * 2018-10-26 2020-04-30 三菱マヒンドラ農機株式会社 Combine
JP2020065501A (en) * 2018-10-26 2020-04-30 三菱マヒンドラ農機株式会社 Combine
JP7041606B2 (en) 2018-10-26 2022-03-24 三菱マヒンドラ農機株式会社 combine
JP7083301B2 (en) 2018-10-26 2022-06-10 三菱マヒンドラ農機株式会社 combine
JP2022001025A (en) * 2020-06-19 2022-01-06 株式会社クボタ Head-feeding combine

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