JPH08170710A - Mission structure of work machine - Google Patents
Mission structure of work machineInfo
- Publication number
- JPH08170710A JPH08170710A JP31438694A JP31438694A JPH08170710A JP H08170710 A JPH08170710 A JP H08170710A JP 31438694 A JP31438694 A JP 31438694A JP 31438694 A JP31438694 A JP 31438694A JP H08170710 A JPH08170710 A JP H08170710A
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- hst
- transmission mechanism
- work
- speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Transmission Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、田植機、トラクタ、コ
ンバインといった作業機のミッション構造に係り、詳し
くは、走行用にＨＳＴ（静油圧式無段変速装置）を備え
たミッションに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mission structure of working machines such as rice transplanters, tractors and combine harvesters, and more particularly to a mission equipped with an HST (hydrostatic stepless transmission) for traveling. .
【０００２】[0002]
【従来の技術】例えば、特開平６‐１７９０９号公報で
示されるトラクタのミッションのように、ＨＳＴにおけ
る変速後のモータ軸から走行系に伝動し、変速されない
ポンプ軸からＰＴＯ系に伝動する構成を採るのが一般的
である。2. Description of the Related Art For example, as in the transmission of a tractor disclosed in Japanese Patent Laid-Open No. 6-17909, a structure in which power is transmitted from a motor shaft after a gear shift in HST to a traveling system and from a pump shaft that is not geared to a PTO system. It is generally taken.
【０００３】[0003]
【発明が解決しようとする課題】つまり、きめ細かな速
度設定が必要な走行系には無段変速動力を、かつ、一定
速度での駆動状態が望ましい作業装置駆動用のＰＴＯ系
にはＨＳＴを経ない非変速動力を夫々伝動してあり、合
理的にＨＳＴを使用している。ＨＳＴはショックなく滑
らかな変速が行える利点がある反面、油を介しての伝動
であって伝達効率は比較的低いものである。そのため、
植付作業等のように一定速度での作業走行中でも、すな
わち、変速の必要のない場合においてもＨＳＴを介して
伝動させているのは不経済であり、改善の余地があるよ
うに思える。本発明の目的は、滑らかに変速できるＨＳ
Ｔを採用しながら、作業走行時における伝達効率を改善
させる点にある。In other words, continuously variable transmission power is applied to a traveling system that requires a fine speed setting, and HST is applied to a PTO system for driving a work device, which is preferably driven at a constant speed. The non-shift power is transmitted respectively, and the HST is reasonably used. The HST has the advantage that smooth gear shifting can be performed without shock, but on the other hand, the transmission is via oil and the transmission efficiency is relatively low. for that reason,
It is uneconomical to transmit power through the HST even during work traveling at a constant speed such as planting work, that is, when gear shifting is not necessary, and it seems that there is room for improvement. An object of the present invention is to provide an HS that can shift smoothly.
The point is to improve the transmission efficiency during work traveling while adopting T.
【０００４】[0004]
【課題を解決するための手段】上記目的の達成のために
本発明は、走行用のＨＳＴにおけるモータ軸と駆動車軸
とを連動連結可能な走行用伝動機構と、ＨＳＴにおける
ポンプ軸とＰＴＯ軸とを連動連結可能な作業装置用伝動
機構とを備え、走行用伝動機構に、モータ軸と駆動車軸
とを連動連結する油圧伝動状態と、作業装置用伝動機構
と駆動車軸とを連動連結する非油圧伝動状態とを択一的
に選択設定可能な伝動切換機構を設けてあることを特徴
とするものである。作業装置用伝動機構に、作業装置駆
動に適した変速比を有する高速伝動状態と、この高速伝
動状態の変速比よりも減速されて湿地脱出駆動に適した
変速比を有する低速伝動状態とを備えたＰＴＯ副変速機
構を設けてあるようにすれば好都合である。又、作業装
置用伝動機構に、所定以上の回転負荷が作用すると滑り
作動する滑りクラッチを備えてあるのも良い。To achieve the above object, the present invention provides a traveling transmission mechanism capable of interlockingly connecting a motor shaft and a drive axle in a traveling HST, a pump shaft and a PTO shaft in the HST. And a power transmission mechanism for a working device capable of interlocking connection with each other, a hydraulic power transmission state in which a motor shaft and a drive axle are interlockingly connected to a traveling power transmission, and a non-hydraulic state in which the working device power transmission mechanism and a drive axle are interlockingly connected. It is characterized in that a transmission switching mechanism capable of selectively selecting and setting the transmission state is provided. The work device transmission mechanism includes a high-speed transmission state having a gear ratio suitable for driving the work device, and a low-speed transmission state having a gear ratio suitable for wetland escape driving by being decelerated from the gear ratio of the high-speed transmission state. It is convenient if a PTO auxiliary transmission mechanism is provided. Further, the work device power transmission mechanism may be provided with a slip clutch that slides when a rotational load of a predetermined amount or more acts.
【０００５】[0005]
【作用】請求項１の構成によれば、走行車輪には、ＨＳ
Ｔを経た変速後の動力と、ＨＳＴを経ない動力とを選択
して伝達することが可能である。従って、村落から圃場
への移動走行とか、圃場の泥土状態や作業条件による作
業速度のセッティング走行時には、ＨＳＴによる変速性
に優れた油圧伝動状態を選択し、セッティング後におけ
る定速での作業走行や、信号、踏切等の減速機会のない
移動走行等の、変速せずに一定速度で走行し続けられる
ような場合の走行時には非油圧伝動状態を選択して、高
い伝動効率を現出させるのである。According to the structure of claim 1, the traveling wheels are provided with HS.
It is possible to select and transmit the power after shifting after passing T and the power not passing through HST. Therefore, when traveling from a village to the field, or when setting the working speed according to the mud condition and working conditions in the field, select the hydraulic transmission state with excellent gear shifting by the HST, and perform the constant speed work running after setting. , Non-hydraulic transmission state is selected when traveling at a constant speed without shifting, such as moving traveling without deceleration opportunities such as traffic lights and railroad crossings, to achieve high transmission efficiency. .
【０００６】請求項２の構成では、非油圧伝動状態にお
いてＰＴＯ副変速機構が存在しているから、高速伝動状
態に設定すれば作業走行に適した変速比が得られ、又、
低速伝動状態に設定すれば、深い泥地での湿地脱出に適
した変速比が得られる。この湿地脱出駆動用の低速伝動
状態は非油圧伝動状態であるから、例えばＨＳＴを経た
後の伝動系にこのような低速状態を可能とする変速機構
を設定する場合よりも、伝動効率に優れている分湿地脱
出作用が優れている。According to the second aspect of the present invention, since the PTO auxiliary transmission mechanism is present in the non-hydraulic power transmission state, if the high speed transmission state is set, a gear ratio suitable for work traveling can be obtained, and
When set to the low speed transmission state, a gear ratio suitable for escape from a wetland in a deep swamp can be obtained. Since the low-speed transmission state for driving the wetland escape is a non-hydraulic transmission state, the transmission efficiency is superior to that in the case where a transmission mechanism that allows such a low-speed state is set in the transmission system after passing through HST, for example. It has excellent wetland escape function.
【０００７】請求項３の構成では、ギヤ伝動等の非油圧
伝動状態である故に、強大な過負荷が作用すると、エン
ストや伝動系の損傷の懸念があるから、所定以上の回転
負荷で作用する滑りクラッチを設けてあれば、その不都
合おそれを回避することができる。According to the third aspect of the present invention, because of a non-hydraulic power transmission state such as gear transmission, if a strong overload is applied, there is a risk of engine stall or damage to the transmission system. If the slip clutch is provided, it is possible to avoid the inconvenience.
【０００８】[0008]
【発明の効果】その結果、請求項１に記載のミッション
構造では、伝動切換機構の働きによって、ＨＳＴを介さ
ない非油圧伝動状態で実作業時間の多くを占める定速で
の作業走行や移動走行が行え、変速操作性に優れたＨＳ
Ｔ変速構造を採りながらも全体としての伝動効率が改善
されて経済性を向上できた。請求項２に記載のミッショ
ン構造では、高い伝動効率の非油圧伝動状態での低速に
より、高いトルクによる有効な湿地脱出機能が発揮でき
る利点がある。請求項３に記載のミッション構造では、
高い伝動効率による有効な駆動力を得ながらも、作業装
置用伝動機構の保護が行えるようにできた。As a result, in the mission structure according to the first aspect, due to the operation of the transmission switching mechanism, work traveling or traveling traveling at a constant speed that occupies most of the actual work time in a non-hydraulic power transmission state not through the HST. HS with excellent gear shifting operability
While adopting the T-shift structure, overall transmission efficiency was improved and economic efficiency was improved. The mission structure according to claim 2 has an advantage that an effective wetland escape function by high torque can be exhibited due to the low speed in the non-hydraulic power transmission state of high transmission efficiency. In the mission structure according to claim 3,
It was possible to protect the power transmission mechanism for the working device while obtaining an effective driving force due to high transmission efficiency.
【０００９】[0009]
【実施例】以下に、本発明の実施例を、作業機の一例で
ある田植機の場合について図面に基づいて説明する。図
１に田植機が示され、１は植付装置２を機体５に対して
昇降操作する四連リンク式の昇降機構、３はエンジン、
４は走行用のＨＳＴ（静油圧式無段変速装置）、１１は
ミッション、６は前輪、７は後輪である。Embodiments of the present invention will be described below with reference to the drawings in the case of a rice transplanter, which is an example of a working machine. A rice transplanter is shown in FIG. 1, 1 is a four-link type lifting mechanism for vertically moving the planting device 2 with respect to the machine body 3, 3 is an engine,
Reference numeral 4 is a traveling HST (hydrostatic continuously variable transmission), 11 is a mission, 6 is a front wheel, and 7 is a rear wheel.
【００１０】図２に示すように、ＨＳＴ４のトラニオン
軸４ｔを変速操作する電動シリンダ８と、この電動シリ
ンダ８を駆動指令する変速レバー９と、変速レバー９の
操作位置を検出可能なポテンショメータ１０と、ＨＳＴ
４のモータ軸４ａの回転速度を検出可能な出力回転検出
手段Ａと、エンジン３の出力回転数を検出する回転数検
出器１５が制御装置１２に接続されて走行制御装置が構
成されている。つまり、エンジン３がある回転数（通常
はフルアクセルによる最高回転数にセットされている）
変速レバー９の操作によって設定されるモータ軸４ａの
設定回転速度と、モータ軸４ａの実出力回転速度とが一
致するように、回転数検出器１５と両検出手段１０，Ａ
の検出情報に基づいて電動シリンダ８を操作するフィー
ドバック制御手段Ｆが制御装置１２に備えられている。As shown in FIG. 2, an electric cylinder 8 that shifts the trunnion shaft 4t of the HST 4, a shift lever 9 that drives the electric cylinder 8, and a potentiometer 10 that can detect the operating position of the shift lever 9. , HST
The output rotation detecting means A capable of detecting the rotation speed of the motor shaft 4a of No. 4 and the rotation speed detector 15 detecting the output rotation speed of the engine 3 are connected to the control device 12 to configure a travel control device. That is, the engine 3 has a certain rotation speed (usually set to the maximum rotation speed by full accelerator)
The rotation speed detector 15 and both detection means 10, A are arranged so that the set rotation speed of the motor shaft 4a set by the operation of the shift lever 9 and the actual output rotation speed of the motor shaft 4a match.
The control device 12 is provided with the feedback control means F for operating the electric cylinder 8 on the basis of the detection information.
【００１１】図３に示すように、出力回転検出手段Ａ
は、モータ軸４ａに近接配置される電磁式のピックアッ
プ１３と、モータ軸４ａに設けられる単一の磁性金属製
カム１４とで成るピックアップセンサで構成されてい
る。つまり、ピックアップセンサＡによる検出波におけ
る突出波形部ａが、単位時間当たりに幾つあるかによっ
て回転速度（回転数）を検出することができるように構
成されている。As shown in FIG. 3, output rotation detecting means A
Is composed of an electromagnetic pickup 13 arranged close to the motor shaft 4a, and a pickup sensor composed of a single magnetic metal cam 14 provided on the motor shaft 4a. That is, the rotation speed (the number of rotations) can be detected by the number of protruding waveform portions a in the detection wave of the pickup sensor A per unit time.
【００１２】例えば、変速レバー９を中立と前進最高速
度との丁度中間位置の前進操作域に操作すると、そのと
きのエンジン３の回転数からＨＳＴモータ軸４ａの回転
速度が一義的に決まる（設定される）から、そのときに
実際に検出されるモータ軸４ａの回転速度がその設定速
度よりも遅いと、フィードバック制御手段Ｆは、トラニ
オン軸４ｔがさらに前進高速側に操作されるように電動
シリンダ８を駆動させるように機能する。そして、その
電動シリンダ８の駆動は、検出回転速度が設定回転速度
に一致するまで続けられる。For example, when the speed change lever 9 is operated in the forward operation range of the intermediate position between the neutral position and the maximum forward speed, the rotational speed of the engine 3 at that time uniquely determines the rotational speed of the HST motor shaft 4a (setting). Therefore, if the rotation speed of the motor shaft 4a actually detected at that time is slower than the set speed, the feedback control means F causes the trunnion shaft 4t to operate further toward the forward high speed side. 8 to drive 8. Then, the driving of the electric cylinder 8 is continued until the detected rotation speed matches the set rotation speed.
【００１３】又、モータ軸４ａの回転方向を判別する回
転方向判別手段Ｂを設け、変速レバー９が中立操作され
ている状態においてＨＳＴモータ軸４ａが回転している
ときには、その回転速度を零にするようにトラニオン軸
４ｔが操作される状態に、出力回転検出手段Ａと回転方
向判別手段Ｂと。電動シリンダ８とが連係される修正制
御手段Ｓが制御装置１２に備えられている。回転方向判
別手段Ｂは、前述したピックアップセンサＡで兼用構成
されており、図３に示すように、カム１４の形状を、片
側を略垂直に切り立った面に、もう片側をなだらかに隆
起した曲線面に形成されたもの、すなわちモータ軸４ａ
の回転方向で非対称形状に形成してあり、図４に示す検
出波形ａにおけるなだらかな***部Ｎａと、垂直部Ｓａ
とがグラフ進行上でどちらが前（又は後）にあるか、に
よって回転方向の正逆を判別するようになっている。Further, a rotation direction discriminating means B for discriminating the rotation direction of the motor shaft 4a is provided, and when the HST motor shaft 4a is rotating while the speed change lever 9 is in the neutral operation, the rotation speed thereof is made zero. The output rotation detection means A and the rotation direction determination means B are set in a state in which the trunnion shaft 4t is operated as described above. The control device 12 is provided with correction control means S which is linked to the electric cylinder 8. The rotation direction discriminating means B is also configured by the above-mentioned pickup sensor A, and as shown in FIG. 3, the cam 14 has a curved shape in which one side is a substantially vertical raised surface and the other side is gently raised. Formed on the surface, that is, the motor shaft 4a
Is formed in an asymmetrical shape in the direction of rotation of FIG. 4 and has a gentle rising portion Na and a vertical portion Sa in the detected waveform a shown in FIG.
The forward and reverse of the rotation direction are determined depending on which is the front (or the rear) in the graph progress.
【００１４】つまり、変速レバー９とポテンショメータ
１０との連結部のガタや、出荷前におけるＨＳＴ４の中
立位置合わせ操作に誤差があった等の要因により、変速
レバー９を中立位置に操作しても、モータ軸４ａが極低
速で前進側又は後進側に回転する場合があると、ピック
アップセンサＡの回転速度検出情報、及び回転方向検出
情報から、モータ軸４ａの回転が停止するように制御さ
れるのである。That is, even if the speed change lever 9 is operated to the neutral position due to a play in the connecting portion between the speed change lever 9 and the potentiometer 10 or an error in the neutral position alignment operation of the HST 4 before shipment, When the motor shaft 4a rotates at an extremely low speed toward the forward side or the reverse side, the rotation speed detection information and the rotation direction detection information of the pickup sensor A are controlled to stop the rotation of the motor shaft 4a. is there.
【００１５】図５に示すように、ＨＳＴ４におけるモー
タ軸４ａと後輪７に伝動する駆動車軸１６とを連動連結
可能な走行用伝動機構１７と、ＨＳＴ４におけるポンプ
軸４ｃとＰＴＯ軸１８とを連動連結可能な作業装置用伝
動機構１９とを備え、走行用伝動機構１７に、モータ軸
４ａと駆動車軸１６とを連動連結する油圧伝動状態と、
作業装置用伝動機構１９と駆動車軸１６とを連動連結す
る非油圧伝動状態とを択一的に選択設定可能な伝動切換
機構２０を設けてある。走行用伝動伝動機構１７は、高
低２段の走行用副変速機構２１とデフ機構２２等から、
そして、作業装置用伝動機構１９は、高低２段のＰＴＯ
副変速機構２３とジャンプクラッチ２４等から夫々構成
されている。As shown in FIG. 5, a traveling transmission mechanism 17 capable of interlockingly connecting a motor shaft 4a of the HST 4 and a drive axle 16 for transmitting to the rear wheels 7, and a pump shaft 4c and a PTO shaft 18 of the HST 4 are interlocked. A hydraulic transmission state in which a work device transmission mechanism 19 that can be connected is provided, and the traveling transmission mechanism 17 connects the motor shaft 4a and the drive axle 16 in an interlocking manner;
A transmission switching mechanism 20 is provided which can selectively set the non-hydraulic transmission state in which the work device transmission mechanism 19 and the drive axle 16 are interlockingly connected. The traveling transmission transmission mechanism 17 includes a traveling sub-transmission mechanism 21 and a differential mechanism 22 having two high and low stages.
Then, the power transmission mechanism 19 for the working device is a high-low two-stage PTO.
The sub-transmission mechanism 23, the jump clutch 24, and the like are included.
【００１６】ＰＴＯ軸１８には一体回転状態でスライド
可能なシフトギヤ２５が装備されており、そのシフト操
作によって、このシフトギヤ２５が走行用副変速機構２
１における低速従動ギヤ２６に咬合した咬合状態と、咬
合が解除された咬合解除状態との現出が自在である。つ
まり、シフトギヤ２５を咬合解除状態に切換え、かつ、
走行用副変速機構２１を伝動入りに操作すれば、後輪７
にはＨＳＴ４を経た変速動力が伝わる油圧伝動状態にな
り、走行用副変速機構２１を中立操作し、かつ、シフト
ギヤ２５を咬合状態に切換ると、ポンプ軸４ｃの動力を
ギヤ伝動によって後輪７に入力されることになるのであ
る。The PTO shaft 18 is equipped with a shift gear 25 which is slidable in an integrated rotation state, and the shift gear 25 is operated by the shift operation to move the shift auxiliary gear 2 for traveling.
The occlusal state in which the low speed driven gear 26 in 1 and the occlusal state in which the occlusal state is released can freely appear. That is, the shift gear 25 is switched to the disengaged state, and
By operating the auxiliary drive speed change mechanism 21 for transmission, the rear wheels 7
Is in a hydraulic power transmission state in which the transmission power through HST4 is transmitted, the auxiliary drive speed change mechanism 21 is neutrally operated, and the shift gear 25 is switched to the occlusal state. Will be input to.
【００１７】ＰＴＯ副変速機構２３において、高速駆動
ギヤ２７と高速従動ギヤ２８とが咬合すると、作業装置
駆動に適した変速比を有する高速伝動状態が現出され、
低速駆動ギヤ２９と低速従動ギヤ３０とが咬合すると、
高速伝動状態の変速比よりも減速されて湿地脱出駆動に
適した変速比を有する低速伝動状態が現出される。つま
り、定速での植付作業時等では油圧伝動状態に操作する
とともに、ＰＴＯ副変速機構２３を高速に切換え、深み
に嵌まって抜け出せなくなった場合にはＰＴＯ副変速機
構２３を低速に切換え、その強大なトルクによって脱出
を図るのである。又、ジャンプクラッチ（滑りクラッチ
に相当）２４は、所定以上の回転負荷が作用すると滑り
作動するので、非油圧伝動状態での湿地脱出走行等にお
ける不測の負荷による伝動系の損傷やエンストが防止さ
れるようになる。In the PTO auxiliary speed change mechanism 23, when the high speed drive gear 27 and the high speed driven gear 28 are engaged with each other, a high speed transmission state having a speed change ratio suitable for driving the working apparatus appears.
When the low speed drive gear 29 and the low speed driven gear 30 mesh with each other,
A low speed transmission state having a speed ratio suitable for wetland escape driving is realized by reducing the transmission ratio in the high speed transmission state. That is, during planting work at a constant speed, the hydraulic transmission is operated, and the PTO subtransmission mechanism 23 is switched to a high speed. When the PTO subtransmission mechanism 23 cannot be slipped out due to a deep fit, the PTO subtransmission mechanism 23 is switched to a low speed. , I try to escape by the powerful torque. Further, since the jump clutch (corresponding to a slip clutch) 24 slides when a rotational load of a predetermined amount or more acts, damage or stalling of the transmission system due to an unexpected load during wetland escape traveling in a non-hydraulic transmission state is prevented. Become so.
【００１８】尚、特許請求の範囲の項に図面との対照を
便利にするために符号を記すが、該記入により本発明は
添付図面の構成に限定されるものではない。It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.
【図１】乗用型田植機の側面図[Figure 1] Side view of a riding rice transplanter
【図２】走行制御装置を示す系統図FIG. 2 is a system diagram showing a travel control device.
【図３】ピックアップセンサの構造を示す正面図FIG. 3 is a front view showing the structure of a pickup sensor.
【図４】ピックアップセンサの検出波形グラフを示す図FIG. 4 is a diagram showing a detection waveform graph of a pickup sensor.
【図５】ミッション構造を示す線図FIG. 5 is a diagram showing a mission structure.
４ ＨＳＴ ４ａ モータ軸 ４ｃ ポンプ軸 １６ 駆動車軸 １７ 走行用伝動伝動機構 １８ ＰＴＯ軸 １９ 作業装置用伝動機構 ２０ 伝動切換機構 ２３ ＰＴＯ副変速機構 ２４ 滑りクラッチ 4 HST 4a Motor shaft 4c Pump shaft 16 Drive axle 17 Travel transmission transmission mechanism 18 PTO shaft 19 Working device transmission mechanism 20 Transmission switching mechanism 23 PTO auxiliary transmission mechanism 24 Slip clutch
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成７年７月２６日[Submission date] July 26, 1995
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】図５[Name of item to be corrected] Figure 5
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図５】 [Figure 5]
Claims (3)
（４ａ）と駆動車軸（１６）とを連動連結可能な走行用
伝動機構（１７）と、前記ＨＳＴ（４）におけるポンプ
軸（４ｃ）とＰＴＯ軸（１８）とを連動連結可能な作業
装置用伝動機構（１９）とを備え、前記走行用伝動機構
（１７）に、前記モータ軸（４ａ）と前記駆動車軸（１
６）とを連動連結する油圧伝動状態と、前記作業装置用
伝動機構（１９）と前記駆動車軸（１６）とを連動連結
する非油圧伝動状態とを択一的に選択設定可能な伝動切
換機構（２０）を設けてある作業機のミッション構造。1. A traveling transmission mechanism (17) capable of interlockingly connecting a motor shaft (4a) and a drive axle (16) in a traveling HST (4), and a pump shaft (4c) in the HST (4). And a PTO shaft (18) are interlockingly connected to each other, and a work device transmission mechanism (19) is provided, and the traveling transmission mechanism (17) includes the motor shaft (4a) and the drive axle (1).
6) A transmission switching mechanism capable of selectively selecting and setting a hydraulic transmission state in which the working device transmission mechanism 19 and the drive axle 16 are coupled in a non-hydraulic transmission state. The mission structure of the working machine provided with (20).
業装置駆動に適した変速比を有する高速伝動状態と、こ
の高速伝動状態の変速比よりも減速されて湿地脱出駆動
に適した変速比を有する低速伝動状態とを備えたＰＴＯ
副変速機構（２３）を設けてある請求項１に記載の作業
機のミッション構造。2. A high speed transmission state having a gear ratio suitable for driving the work device in the work device transmission mechanism (19), and a gear shift suitable for wetland escape drive by being decelerated from the gear ratio in the high speed transmission state. PTO with low speed transmission with ratio
The mission structure for a working machine according to claim 1, wherein a sub transmission mechanism (23) is provided.
定以上の回転負荷が作用すると滑り作動する滑りクラッ
チ（２４）を備えてある請求項１又は２に記載の作業機
のミッション構造。3. The work machine mission structure according to claim 1, wherein the work device power transmission mechanism (19) is provided with a slip clutch (24) that slides when a rotational load of a predetermined amount or more acts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31438694A JPH08170710A (en) | 1994-12-19 | 1994-12-19 | Mission structure of work machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31438694A JPH08170710A (en) | 1994-12-19 | 1994-12-19 | Mission structure of work machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08170710A true JPH08170710A (en) | 1996-07-02 |
Family
ID=18052726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31438694A Pending JPH08170710A (en) | 1994-12-19 | 1994-12-19 | Mission structure of work machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08170710A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003090430A (en) * | 2001-09-20 | 2003-03-28 | Yanmar Agricult Equip Co Ltd | Working vehicle |
| JP2011052833A (en) * | 2010-12-10 | 2011-03-17 | Yanmar Co Ltd | Working vehicle |
| JP2011257007A (en) * | 2011-08-08 | 2011-12-22 | Yanmar Co Ltd | Working vehicle |
| JP2012159204A (en) * | 2012-05-30 | 2012-08-23 | Yanmar Co Ltd | Work vehicle |
| JP2012159205A (en) * | 2012-05-30 | 2012-08-23 | Yanmar Co Ltd | Transmission for work vehicle |
| JP2012159203A (en) * | 2012-05-30 | 2012-08-23 | Yanmar Co Ltd | Work vehicle |
| JP2013019542A (en) * | 2012-09-24 | 2013-01-31 | Yanmar Co Ltd | Working vehicle |
| JP2013177985A (en) * | 2013-06-28 | 2013-09-09 | Yanmar Co Ltd | Output control method of farming vehicle |
-
1994
- 1994-12-19 JP JP31438694A patent/JPH08170710A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003090430A (en) * | 2001-09-20 | 2003-03-28 | Yanmar Agricult Equip Co Ltd | Working vehicle |
| JP2011052833A (en) * | 2010-12-10 | 2011-03-17 | Yanmar Co Ltd | Working vehicle |
| JP2011257007A (en) * | 2011-08-08 | 2011-12-22 | Yanmar Co Ltd | Working vehicle |
| JP2012159204A (en) * | 2012-05-30 | 2012-08-23 | Yanmar Co Ltd | Work vehicle |
| JP2012159205A (en) * | 2012-05-30 | 2012-08-23 | Yanmar Co Ltd | Transmission for work vehicle |
| JP2012159203A (en) * | 2012-05-30 | 2012-08-23 | Yanmar Co Ltd | Work vehicle |
| JP2013019542A (en) * | 2012-09-24 | 2013-01-31 | Yanmar Co Ltd | Working vehicle |
| JP2013177985A (en) * | 2013-06-28 | 2013-09-09 | Yanmar Co Ltd | Output control method of farming vehicle |
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