JPH0524554A - Traveling device for working machine - Google Patents
Traveling device for working machineInfo
- Publication number
- JPH0524554A JPH0524554A JP20758391A JP20758391A JPH0524554A JP H0524554 A JPH0524554 A JP H0524554A JP 20758391 A JP20758391 A JP 20758391A JP 20758391 A JP20758391 A JP 20758391A JP H0524554 A JPH0524554 A JP H0524554A
- Authority
- JP
- Japan
- Prior art keywords
- continuously variable
- variable transmission
- lever
- clutch
- rotation
- 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.)
- Withdrawn
Links
Landscapes
- Guiding Agricultural Machines (AREA)
- Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、コンバイン等の作業機
の走行装置に係るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling device for a working machine such as a combine.
【０００２】[0002]
【従来技術】従来公知の、実開昭５４−１８３４４４号
公報には、左右一対のクローラと、該クローラをそれぞ
れ駆動回転させる駆動輪と、前記駆動輪を正逆転させて
スピンターンさせる逆転機構とを有するコンバインの走
行装置について記載されている。なお、入力軸の回転を
無段変速する機構および回転トルク変更機構とを有する
油圧式無段変速装置は、別に公知である。2. Description of the Related Art In Japanese Utility Model Laid-Open No. 54-183444, which has been publicly known, a pair of left and right crawlers, drive wheels for respectively driving and rotating the crawlers, and a reversing mechanism for spin-turning the drive wheels in the forward and reverse directions. The combine traveling device having the above is described. A hydraulic continuously variable transmission having a mechanism for continuously changing the rotation of the input shaft and a rotation torque changing mechanism is separately known.
【０００３】[0003]
【発明が解決しようとする課題】前記公知例の走行装置
は、左右の駆動輪を正逆転させてスピンターンさせると
き、駆動輪に伝達される回転トルクが不足して、エンス
トすることがある。この課題の対策としては、スピンタ
ーンを開始したときは自動的に、駆動輪に伝達される回
転トルクを上昇させるようにするとよい。In the traveling apparatus of the above-mentioned known example, when the left and right drive wheels are rotated in the forward and reverse directions and spin-turned, the rotational torque transmitted to the drive wheels may be insufficient and the engine may stall. As a measure against this problem, it is advisable to automatically increase the rotational torque transmitted to the drive wheels when the spin turn is started.
【０００４】[0004]
【発明の目的】本発明は、スピンターンをするときは、
駆動輪に伝達される回転トルクを自動的に上昇させて、
旋回中の停止を防止したものである。It is an object of the present invention to make a spin turn when
By automatically increasing the rotational torque transmitted to the drive wheels,
This prevents a stop during turning.
【０００５】[0005]
【課題を解決するための手段】よって、本発明は、左右
一対のクローラ１２と、該クローラ１２をそれぞれ駆動
回転させる駆動輪１８と、操作レバー１５の操作により
前記駆動輪１８を正逆転させてスピンターンさせる逆転
機構３２と、入力軸２１の回転を無段変速する機構およ
び回転トルク変更機構とを有する油圧式無段変速装置１
９とからなり、前記操作レバー１５の操作により逆転機
構３２を作動させてスピンターンさせると、この操作に
連動して前記油圧式無段変速装置１９の回転トルク変更
機構が変更されるように前記操作レバー１５と前記油圧
式無段変速装置１９の回転トルク変更機構とを関連的に
連結した作業機の走行装置としたものである。According to the present invention, therefore, a pair of left and right crawlers 12, drive wheels 18 for driving and rotating the crawlers 12, and operation lever 15 are used to rotate the drive wheels 18 forward and backward. Hydraulic continuously variable transmission 1 having a reverse rotation mechanism 32 for spin-turning, a mechanism for continuously changing the rotation of the input shaft 21, and a rotation torque changing mechanism.
When the operation lever 15 is operated to operate the reverse rotation mechanism 32 to cause a spin turn, the rotation torque changing mechanism of the hydraulic continuously variable transmission 19 is changed in association with the operation. The operating lever 15 and the rotational torque changing mechanism of the hydraulic continuously variable transmission 19 are associated with each other to provide a traveling device for a working machine.
【０００６】[0006]
【実施例】本発明の実施例をコンバインの例にて図面に
より説明すると、１はコンバインの機体、２は機体１の
下方に設けた走行装置、３は機体１の上方に設けた脱穀
装置、４は刈取部、５は前記刈取部４の分草体、６は掻
込リ−ル、７は刈刃、８はオーガ、９は刈取部４で刈取
った穀稈を前記脱穀装置３に搬送供給する搬送装置であ
る。１０は前記刈取部４および前記搬送装置９を上下動
させる刈取上下シリンダである。１２は前記走行装置２
の左右一対のクローラであり、左右一対のクローラ１２
のうち一方の駆動を切ることにより方向修正を行ない、
互いを逆回転させることによりスピンターンができるよ
うに構成される。１３は主変速レバー、１４は副変速レ
バー、１５は操作レバー（説明の都合上以下パワステレ
バーという）である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings using an example of a combine. 1 is a combine machine, 2 is a traveling device provided below the machine body, 3 is a threshing device provided above the machine body 1, 4 is a mowing unit, 5 is a grass body of the mowing unit 4, 6 is a scraping reel, 7 is a cutting blade, 8 is an auger, and 9 is a grain culm cut by the mowing unit 4 and is conveyed to the threshing device 3. It is a feeding device for supplying. Reference numeral 10 is a reaper vertical cylinder for moving the reaper 4 and the conveyor 9 up and down. 12 is the traveling device 2
A pair of left and right crawlers, and a pair of left and right crawlers 12
Correcting the direction by turning off one of the drives,
It is configured such that spin rotation can be performed by rotating them in opposite directions. Reference numeral 13 is a main speed change lever, 14 is an auxiliary speed change lever, and 15 is an operation lever (hereinafter referred to as a power steering lever for convenience of description).
【０００７】１６はミッションケース、１７は前記ミッ
ションケース１６に設けた車軸、１８は車軸１７に固定
の駆動輪であり、前記クローラ１２は駆動輪１８により
回転し、駆動輪１８の回転速度は前記ミッションケース
１６に設けた油圧式無段変速装置１９を前記主変速レバ
ー１３による操作または前記副変速レバー１４による副
変速機構２０の変速により変更する。また、前記油圧式
無段変速装置１９は回転数はそのままに回転トルクを変
更させる回転トルク変更機構を有している。２１はミッ
ションケ−ス１３に設けた前記油圧式無段変速装置１９
により回転する入力軸、２２は中間軸、２３は前記入力
軸２１と前記中間軸２２に設けた前記副変速機構２０を
構成する歯車群、２４はサイドクラッチ軸、２５はサイ
ドクラッチ軸２４の中央位置に設けたセンタ−ギヤ、２
６は前記センタ−ギヤ２５の両側の左右内歯と継脱自在
の左右クラッチ体、２７は前記サイドクラッチ軸２４の
近傍に軸装されたカウンタ軸、２８は前記左右クラッチ
体２６に常時噛合っているカウンタ軸２７に遊嵌した歯
車、２９は前記歯車２８と一体回転する歯車、３０は歯
車２９に常時噛合っている前記車軸１７に固定の歯車で
ある。Reference numeral 16 is a mission case, 17 is an axle provided on the mission case 16, 18 is a drive wheel fixed to the axle 17, the crawler 12 is rotated by the drive wheel 18, and the rotational speed of the drive wheel 18 is the above-mentioned. The hydraulic continuously variable transmission 19 provided in the transmission case 16 is changed by the operation of the main transmission lever 13 or the shift of the sub transmission mechanism 20 by the sub transmission lever 14. Further, the hydraulic continuously variable transmission 19 has a rotation torque changing mechanism for changing the rotation torque while keeping the rotation speed unchanged. Reference numeral 21 denotes the hydraulic continuously variable transmission device 19 provided in the mission case 13.
An input shaft that is rotated by 22, an intermediate shaft, a gear group that constitutes the auxiliary transmission mechanism 20 provided on the input shaft 21 and the intermediate shaft, a side clutch shaft, and a center of the side clutch shaft. Center gear set in position, 2
Reference numeral 6 denotes left and right inner teeth on both sides of the center gear 25, and left and right clutch bodies that can be disengaged from each other, 27 denotes a counter shaft mounted near the side clutch shaft 24, and 28 always meshes with the left and right clutch bodies 26. A counter gear 27 is loosely fitted to the counter shaft 27, 29 is a gear that rotates integrally with the gear 28, and 30 is a gear fixed to the axle 17 that is always meshed with the gear 29.
【０００８】３１は前記サイドクラッチ軸２４の近傍に
設けた逆転クラッチ軸であり、該逆転クラッチ軸３１に
は、左右の車軸１７を互いに逆転させてスピンターンを
行なう逆転機構３２を設ける。該逆転機構３２は、前記
逆転クラッチ軸３１と一体回転するクラッチ体３３と、
該クラッチ体３３に摺接して前記逆転クラッチ軸３１に
回転のみ自由に設けたクラッチ体３４とにより構成さ
れ、クラッチ体３４に形成した歯車３５を前記歯車３０
の一方に常時噛合せる。３６は逆転クラッチ軸３１に固
定の別の歯車、３７は逆転用中間軸３８の一側に固定の
歯車、３９は前記逆転用中間軸３８の他側に固定の歯車
であり、前記歯車３７は歯車３６に、歯車３９は前記歯
車３０に常時噛合せている。４０は副変速機構２０の歯
車群２３のシフタ、４１は前記左右クラッチ体２６のシ
フタである。図３は、油圧回路図であり、４２は油タン
ク、４３は油ポンプ、４４はクラッチ用切替バルブ、４
５は前記ミッションケース１６内に設けた左右クラッチ
体２６のシフタを操作するクラッチシリンダである。４
６は前記左右クラッチ体２６を切にしたとき、左右のク
ラッチシリンダ４５を連通させて両者の油圧が均衡する
ように排油する排出油路であり、該排出油路４６に前記
パワステレバー１５と前記逆転機構３２による操作の流
量制御弁４７を設けている。また、４８は前記逆転機構
３２を作動させるときの油路である。Reference numeral 31 is a reverse rotation clutch shaft provided in the vicinity of the side clutch shaft 24, and the reverse rotation clutch shaft 31 is provided with a reverse rotation mechanism 32 for rotating the left and right axles 17 in reverse to perform a spin turn. The reverse rotation mechanism 32 includes a clutch body 33 that rotates integrally with the reverse rotation clutch shaft 31.
A clutch body 34, which is slidably in contact with the clutch body 33 and is rotatably provided on the reverse rotation clutch shaft 31, is provided with a gear 35 formed on the clutch body 34.
Always mesh with one side. 36 is another gear fixed to the reverse rotation clutch shaft 31, 37 is a gear fixed to one side of the reverse rotation intermediate shaft 38, 39 is a gear fixed to the other side of the reverse rotation intermediate shaft 38, and the gear 37 is The gear 36 and the gear 39 are constantly meshed with the gear 30. Reference numeral 40 is a shifter of the gear group 23 of the auxiliary transmission mechanism 20, and 41 is a shifter of the left and right clutch bodies 26. FIG. 3 is a hydraulic circuit diagram. 42 is an oil tank, 43 is an oil pump, 44 is a clutch switching valve, and 4 is a clutch switching valve.
Reference numeral 5 is a clutch cylinder for operating the shifters of the left and right clutch bodies 26 provided in the transmission case 16. Four
When the left and right clutch bodies 26 are disengaged, 6 is an exhaust oil passage for communicating the left and right clutch cylinders 45 so that the oil pressures of the two are balanced so that the power steering lever 15 and A flow rate control valve 47 operated by the reversing mechanism 32 is provided. Reference numeral 48 is an oil passage when operating the reversing mechanism 32.
【０００９】前記パワステレバー１５は、中立位置から
左右のいずれか一側に傾倒させると、前記左右のクラッ
チ体２６のうち一方のクラッチ体２６を切にして、他方
のクローラ１２を駆動回転させて方向修正を行ない、更
に倒すと、前記逆転機構３２のクラッチ体３３とクラッ
チ体３４とを接触させ、左右のクローラ１２を互いに逆
回転させてスピンターンを行なう。なお、前記左右クラ
ッチ体２６を入の状態で操作席に設けたフットペダル４
９を踏むと、前記逆転機構３２のクラッチ体３３とクラ
ッチ体３４とを接触させ、前記左右のクローラ１２の回
転を同時に停止させてブレーキを掛ける（なお、フット
ペダル４９の操作によりスピンターンを行なえるように
構成することもある）。When the power steering lever 15 is tilted to the left or right from the neutral position, one of the left and right clutch bodies 26 is disengaged and the other crawler 12 is driven and rotated. When the direction is corrected and further tilted, the clutch body 33 and the clutch body 34 of the reversing mechanism 32 are brought into contact with each other, and the left and right crawlers 12 are rotated in opposite directions to perform a spin turn. In addition, the foot pedal 4 provided in the operation seat with the left and right clutch bodies 26 in the on state.
When step 9 is depressed, the clutch body 33 and the clutch body 34 of the reversing mechanism 32 are brought into contact with each other, and the rotations of the left and right crawlers 12 are stopped at the same time to apply a brake (note that the foot pedal 49 can be operated to perform a spin turn). Sometimes configured to).
【００１０】しかして、前記駆動輪１８の回転数は前記
ミッションケース１６に設けた油圧式無段変速装置１９
または副変速機構２０により変更して、走行速度を変更
するが、前記油圧式無段変速装置１９は回転数に反比例
して回転トルクを変更可能に構成し、前記スピンタ−ン
させるような前記駆動輪１８の回転に負荷が係るとき
は、前記油圧式無段変速装置１９の回転トルクを増大さ
せる。本発明では、パワステレバー１５による操作に連
動させて自動的に前記油圧式無段変速装置１９が伝達す
る回転のトルクを増大させるように構成している。前記
パワステレバー１５の油路には、別の油路５０を形成
し、油路５０には切替バルブ５１を介してトルク変更用
シリンダ５２を設ける。トルク変更用シリンダ５２は前
記油圧式無段変速装置１９のトルク変更機構を作動させ
るトルク変更レバー５３を操作し、前記入力軸２１へ伝
達する回転トルクを高くさせる。即ち、トルク変更レバ
ー５３をトルク変更用シリンダ５２により傾倒させる
と、前記油圧式無段変速装置１９内の斜板の傾斜角度を
変更させて前記入力軸２１に伝達する回転のトルクを変
更させる。なお、回転トルク変更機構の構成はいずれで
もよい。Therefore, the rotational speed of the drive wheel 18 is set to the hydraulic continuously variable transmission 19 provided in the transmission case 16.
Alternatively, the auxiliary speed change mechanism 20 is used to change the traveling speed, but the hydraulic continuously variable transmission 19 is configured to be able to change the rotational torque in inverse proportion to the number of revolutions, and to drive the spin turn. When a load is applied to the rotation of the wheels 18, the rotational torque of the hydraulic continuously variable transmission 19 is increased. In the present invention, the rotational torque transmitted by the hydraulic continuously variable transmission 19 is automatically increased in association with the operation of the power steering lever 15. Another oil passage 50 is formed in the oil passage of the power steering lever 15, and a torque changing cylinder 52 is provided in the oil passage 50 via a switching valve 51. The torque changing cylinder 52 operates the torque changing lever 53 that operates the torque changing mechanism of the hydraulic continuously variable transmission 19 to increase the rotational torque transmitted to the input shaft 21. That is, when the torque changing lever 53 is tilted by the torque changing cylinder 52, the inclination angle of the swash plate in the hydraulic continuously variable transmission 19 is changed to change the rotational torque transmitted to the input shaft 21. The rotational torque changing mechanism may have any configuration.
【００１１】本実施例では、前記切替バルブ５１は副変
速レバー１４と連動するように連結し、副変速レバー１
４を低速にしたとき、切替バルブ５１が切替わり、前記
パワステレバー１５の傾倒操作に連動して前記トルク変
更用シリンダ５２を伸縮させ、前記入力軸２１の回転ト
ルクを増減させ、副変速レバー１４が高速または中速に
位置するときは、前記パワステレバー１５を傾倒操作し
てもスピンターンはできず、前記油圧式無段変速装置１
９のトルク変更機構は作動しないように構成している。In the present embodiment, the switching valve 51 is connected so as to interlock with the auxiliary transmission lever 14, and the auxiliary transmission lever 1
4 is set to a low speed, the switching valve 51 is switched, the torque changing cylinder 52 is expanded and contracted in conjunction with the tilting operation of the power steering lever 15, the rotational torque of the input shaft 21 is increased or decreased, and the auxiliary transmission lever 14 is moved. Is located at a high speed or a medium speed, a spin turn cannot be performed even if the power steering lever 15 is tilted, and the hydraulic continuously variable transmission 1
The torque changing mechanism of 9 is configured not to operate.
【００１２】図６、図７は第２実施例であり、前記左右
クラッチ体２６には、ブレーキ５５を設けた構成であ
り、第２実施例の逆転機構３２はスピンターンときに使
用する。即ち、前記パワステレバー１５の油路には切替
バルブ５６を設け、切替バルブ５６と副変速レバー１４
とを連結し、副変速レバー１４を低速にしたとき、切替
バルブ５６が切替わってスピンターン可能状態にすると
ともに、パワステレバー１５の傾倒操作に連動して前記
トルク変更用シリンダ５２を伸縮させ、前記入力軸２１
の回転トルクを増減させるようにしている。6 and 7 show a second embodiment, in which the left and right clutch bodies 26 are provided with a brake 55, and the reversing mechanism 32 of the second embodiment is used during a spin turn. That is, the switching valve 56 is provided in the oil passage of the power steering lever 15, and the switching valve 56 and the auxiliary transmission lever 14 are connected.
When the auxiliary shift lever 14 is set to a low speed, the switching valve 56 is switched to enable the spin turn, and the torque changing cylinder 52 is expanded and contracted in conjunction with the tilting operation of the power steering lever 15. The input shaft 21
The rotation torque of is increased or decreased.
【００１３】[0013]
【作用】次に作用を述べる。本発明は以上の構成であ
り、エンジンを回転させると、この回転が油圧式無段変
速装置１９に伝達され、油圧式無段変速装置１９は主変
速レバー１３の操作により無段変速して入力軸２１に回
転数を変更しながらエンジンからの回転を伝達し、副変
速レバー１４により副変速機構２０のシフタ４０を操作
して入力軸２１および中間軸２２との間の歯車群２３の
噛合いを変更して変速しながら、サイドクラッチ軸２４
のセンタ−ギヤ２５を回転させる。センタ−ギヤ２５が
回転すると、センタ−ギヤ２５の左右内歯に噛合ってい
る左右クラッチ体２６が回転し、左右クラッチ体２６の
歯部と常時噛合っているカウンタ軸２７の歯車２８、歯
車２９を介して歯車３０を正回転させ、走行する。[Operation] Next, the operation will be described. The present invention is configured as described above, and when the engine is rotated, this rotation is transmitted to the hydraulic continuously variable transmission 19, and the hydraulic continuously variable transmission 19 is operated by continuously operating the main transmission lever 13 to input the continuously variable transmission. Rotation from the engine is transmitted while changing the rotation speed to the shaft 21, and the shifter 40 of the auxiliary transmission mechanism 20 is operated by the auxiliary transmission lever 14 to engage the gear group 23 between the input shaft 21 and the intermediate shaft 22. While changing the speed and changing the side clutch shaft 24
The center gear 25 of is rotated. When the center gear 25 rotates, the left and right clutch bodies 26 that mesh with the left and right inner teeth of the center gear 25 rotate, and the gears 28 and 28 of the counter shaft 27 that constantly mesh with the teeth of the left and right clutch bodies 26. The gear 30 is normally rotated via 29 to travel.
【００１４】しかして、中立位置にあるパワステレバー
１５を左右側の一方の例えば右側に傾倒操作すると、ク
ラッチ用切替バルブ４４が切替って右側のクラッチシリ
ンダ４５が伸張して、左クラッチ体２６は入のまま右ク
ラッチ体２６をセンタ−ギヤ２５の右内歯より外し、右
側の歯車３０への伝達を切にして右側のクローラ１２へ
の駆動を停止させ、左側のクローラ１２の駆動回転によ
り機体は右側に方向修正を行なう。反対に、中立位置に
あるパワステレバー１５を左側に傾倒操作すると、前記
と反対に左側のクローラ１２への駆動を停止させ、右側
のクローラ１２の駆動回転により機体は左側に方向修正
を行なう。反When the power steering lever 15 in the neutral position is tilted to one of the left and right sides, for example, the right side, the clutch switching valve 44 is switched, the right side clutch cylinder 45 is extended, and the left clutch body 26 is With the clutch engaged, the right clutch body 26 is disengaged from the right inner tooth of the center gear 25, the transmission to the right gear 30 is cut off to stop the drive to the right crawler 12, and the left crawler 12 is driven and rotated to drive the machine body. Corrects the direction to the right. On the contrary, when the power steering lever 15 in the neutral position is tilted to the left, the drive to the left crawler 12 is stopped contrary to the above, and the direction of the machine body is corrected to the left by the drive rotation of the right crawler 12. Anti
【００１５】そして、圃場において機体１の方向変換す
るときは、パワステレバー１５をサイドクラッチ体２６
を切にする位置よりも更に右に傾倒させると、クラッチ
シリンダ４５が伸長してサイドクラッチ体２６が切にな
った後、前記逆転機構３２の油圧が高くなって、クラッ
チ体３３とクラッチ体３４とが摺接し、クラッチ体３３
とクラッチ体３４とが摺接すると、左側の歯車３０の回
転が歯車３９→逆転用中間軸３８→歯車３７→歯車３６
→逆転クラッチ軸３１→クラッチ体３３→クラッチ体３
４→歯車３５を介して右側の歯車３０に戻されて、左右
の駆動輪１８は互いに逆回転してスピンターンを開始す
る。When changing the direction of the machine body 1 in the field, the power steering lever 15 is moved to the side clutch body 26.
When the clutch cylinder 45 is extended and the side clutch body 26 is disengaged, the hydraulic pressure of the reversing mechanism 32 becomes high, and the clutch body 33 and the clutch body 34 are tilted further to the right than the position where the clutch body is disengaged. Is in sliding contact with the clutch body 33.
When the clutch body 34 and the clutch body 34 are in sliding contact with each other, the rotation of the left gear 30 is changed from the gear 39 to the reverse rotation intermediate shaft 38 to the gear 37 to the gear 36.
→ reverse rotation clutch shaft 31 → clutch body 33 → clutch body 3
4 → Returned to the right gear 30 via the gear 35, the left and right drive wheels 18 rotate in opposite directions to start a spin turn.
【００１６】この場合、パワステレバー１５の油路５０
には切替バルブ５１が設けられ、切替バルブ５１と副変
速レバー１４とは連動連結されているから、前記副変速
レバー１４が高速および中速位置では、パワステレバー
１５を傾倒操作しても、前記クラッチシリンダ４５は左
右クラッチ体２６切の位置より伸張せず方向修正のみ行
ない、前記副変速レバー１４を低速位置にしたとき切替
バルブ５１が切替わりスピンターン可能状態になる。In this case, the oil passage 50 of the power steering lever 15
Since a switching valve 51 is provided in the vehicle, and the switching valve 51 and the sub-transmission lever 14 are interlocked with each other, even when the power steering lever 15 is tilted at the high speed and medium speed positions, The clutch cylinder 45 does not extend from the position where the left and right clutch bodies 26 are disengaged, and only corrects the direction. When the auxiliary transmission lever 14 is set to the low speed position, the switching valve 51 is switched to enable the spin turn.
【００１７】しかして、スピンターンを行なうときは、
前記左右のクローラ１２は互いに逆回転するので、駆動
輪１８には負荷が掛るが、切替バルブ５１が副変速レバ
ー１４の操作で切替わると、トルク変更用シリンダ５２
はパワステレバー１５の操作に連動して伸縮し、トルク
変更用シリンダ５２の伸縮により油圧式無段変速装置１
９の斜板の傾斜角度を変更させるトルク変更レバー５３
が回動して、前記油圧式無段変速装置１９が入力軸２１
に伝達する回転のトルクを大きくする。したがって、円
滑にスピンターンが行なえる。When performing a spin turn,
Since the left and right crawlers 12 rotate in opposite directions to each other, a load is applied to the drive wheels 18, but when the switching valve 51 is switched by the operation of the auxiliary transmission lever 14, the torque changing cylinder 52 is changed.
Expands and contracts in conjunction with the operation of the power steering lever 15, and the expansion and contraction of the torque changing cylinder 52 causes the hydraulic continuously variable transmission 1 to move.
Torque change lever 53 for changing the tilt angle of the swash plate 9
Is rotated, the hydraulic continuously variable transmission 19 is moved to the input shaft 21.
Increase the rotational torque transmitted to. Therefore, the spin turn can be smoothly performed.
【００１８】[0018]
【効果】本発明は、左右一対のクローラ１２と、該クロ
ーラ１２をそれぞれ駆動回転させる駆動輪１８と、操作
レバー１５の操作により前記駆動輪１８を正逆転させて
スピンターンさせる逆転機構３２と、入力軸２１の回転
を無段変速する機構および回転トルク変更機構とを有す
る油圧式無段変速装置１９とからなり、前記操作レバー
１５の操作により逆転機構３２を作動させてスピンター
ンさせると、この操作に連動して前記油圧式無段変速装
置１９の回転トルク変更機構が変更されるように前記操
作レバー１５と前記油圧式無段変速装置１９の回転トル
ク変更機構とを関連的に連結した作業機の走行装置とし
たものであるから、操作レバー１５の操作によりスピン
ターンを開始させて負荷が大になる状態になると、操作
レバー１５の操作に連動して前記油圧式無段変速装置１
９の回転トルク変更機構が自動的に作動し、入力軸２１
に伝達される回転トルクは自動的に上昇するので、駆動
輪１８に負荷が掛ることによる回転トルク不足を防止
し、スピンタ−ンが終了まで停止することなく円滑に行
なえ、作業に支障を来たさないという効果を奏する。According to the present invention, a pair of left and right crawlers 12, drive wheels 18 for driving and rotating the crawlers 12, respectively, and a reversing mechanism 32 for rotating the drive wheels 18 in the forward and reverse directions by operating the operating lever 15 to spin-turn. It is composed of a hydraulic continuously variable transmission 19 having a mechanism for continuously changing the rotation of the input shaft 21 and a rotation torque changing mechanism, and when the reversing mechanism 32 is operated by the operation of the operating lever 15 to make a spin turn. Work in which the operation lever 15 and the rotation torque changing mechanism of the hydraulic continuously variable transmission 19 are associated with each other so that the rotation torque changing mechanism of the hydraulic continuously variable transmission 19 is changed in association with the operation. Since it is a traveling device for the machine, when the spin turn is started by operating the operating lever 15 and the load becomes large, the operating lever 15 is operated. Conjunction with the hydraulic stepless transmission 1
The rotation torque changing mechanism of 9 automatically operates, and the input shaft 21
Since the rotational torque transmitted to the vehicle automatically increases, the rotational torque shortage due to the load on the drive wheels 18 is prevented, and the spin turn can be smoothly performed without stopping until the end, which hinders the work. It has the effect of not doing it.
【図１】 コンバインの側面図。FIG. 1 is a side view of a combine.
【図２】 ミッションケースの断面図。FIG. 2 is a cross-sectional view of a mission case.
【図３】 油圧回路図。FIG. 3 is a hydraulic circuit diagram.
【図４】 操作レバーとトルクの関係を示す説明図。FIG. 4 is an explanatory diagram showing a relationship between an operation lever and torque.
【図５】 回転数と回転トルクの関係を示す説明図。FIG. 5 is an explanatory diagram showing a relationship between a rotation speed and a rotation torque.
【図６】 第２実施例のミッションケースの断面図。FIG. 6 is a sectional view of the mission case of the second embodiment.
【図７】 同油圧回路図。FIG. 7 is a hydraulic circuit diagram of the same.
１…機体、２…走行装置、３…脱穀装置、４…刈取部、
５…分草体、６…掻込リ−ル、７…刈刃、８…オーガ、
９…搬送装置、１０…刈取上下シリンダ、１２…クロー
ラ、１３…主変速レバー、１４…副変速レバー、１５…
パワステレバー、１６…ミッションケース、１７…車
軸、１８…駆動輪、１９…油圧式無段変速装置、２０…
副変速機構、２１…入力軸、２２…中間軸、２３…歯車
群、２４…サイドクラッチ軸、２５…センタ−ギヤ、２
６…左右クラッチ体、２７…カウンタ軸、２８、２９、
３０…歯車、３１…逆転クラッチ軸、３２…逆転機構、
３３、３４…クラッチ体、３５、３６、３７…歯車、３
８…逆転用中間軸、３９…歯車、４０、４１…シフタ、
４２…油タンク、４３…油ポンプ、４４…クラッチ用切
替バルブ、４５…クラッチシリンダ、４６…排出油路、
４７…流量制御弁、４８…油路、４９…フットペダル、
５０…油路、５１…切替バルブ、５２…トルク変更用シ
リンダ、５３…トルク変更レバー、５５…ブレーキ、５
６…切替バルブ。1 ... Airframe, 2 ... Traveling device, 3 ... Threshing device, 4 ... Mowing unit,
5 ... bud body, 6 ... scraping reel, 7 ... cutting blade, 8 ... auger,
9 ... Conveyor device, 10 ... Mowing vertical cylinder, 12 ... Crawler, 13 ... Main shift lever, 14 ... Sub shift lever, 15 ...
Power steering lever, 16 ... Mission case, 17 ... Axle, 18 ... Drive wheel, 19 ... Hydraulic continuously variable transmission, 20 ...
Sub-transmission mechanism, 21 ... Input shaft, 22 ... Intermediate shaft, 23 ... Gear group, 24 ... Side clutch shaft, 25 ... Center gear, 2
6 ... Left and right clutch bodies, 27 ... Counter shafts, 28, 29,
30 ... Gear, 31 ... Reverse rotation clutch shaft, 32 ... Reverse rotation mechanism,
33, 34 ... Clutch body, 35, 36, 37 ... Gears, 3
8 ... Intermediate shaft for reverse rotation, 39 ... Gear, 40, 41 ... Shifter,
42 ... Oil tank, 43 ... Oil pump, 44 ... Clutch switching valve, 45 ... Clutch cylinder, 46 ... Discharge oil passage,
47 ... flow control valve, 48 ... oil passage, 49 ... foot pedal,
50 ... Oil passage, 51 ... Switching valve, 52 ... Torque changing cylinder, 53 ... Torque changing lever, 55 ... Brake, 5
6 ... Switching valve.
Claims (1)
１２をそれぞれ駆動回転させる駆動輪１８と、操作レバ
ー１５の操作により前記駆動輪１８を正逆転させてスピ
ンターンさせる逆転機構３２と、入力軸２１の回転を無
段変速する機構および回転トルク変更機構とを有する油
圧式無段変速装置１９とからなり、前記操作レバー１５
の操作により逆転機構３２を作動させてスピンターンさ
せると、この操作に連動して前記油圧式無段変速装置１
９の回転トルク変更機構が変更されるように前記操作レ
バー１５と前記油圧式無段変速装置１９の回転トルク変
更機構とを関連的に連結した作業機の走行装置。1. A pair of right and left crawlers 12, drive wheels 18 for driving and rotating the crawlers 12, respectively, and reverse rotation for spin-turning the drive wheels 18 in the forward and reverse directions by operating an operating lever 15. The operating lever 15 includes a mechanism 32, a hydraulic continuously variable transmission 19 having a mechanism for continuously changing the rotation of the input shaft 21 and a rotation torque changing mechanism.
When the reversing mechanism 32 is operated to spin-turn by the operation of, the hydraulic continuously variable transmission 1 is interlocked with this operation.
9. A traveling device for a working machine in which the operation lever 15 and the rotation torque changing mechanism of the hydraulic continuously variable transmission 19 are associated with each other so that the rotation torque changing mechanism of 9 is changed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20758391A JPH0524554A (en) | 1991-07-24 | 1991-07-24 | Traveling device for working machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20758391A JPH0524554A (en) | 1991-07-24 | 1991-07-24 | Traveling device for working machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0524554A true JPH0524554A (en) | 1993-02-02 |
Family
ID=16542165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20758391A Withdrawn JPH0524554A (en) | 1991-07-24 | 1991-07-24 | Traveling device for working machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0524554A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE41353E1 (en) | 1999-03-03 | 2010-05-25 | Panduit Corp. | Cable manager for network rack |
-
1991
- 1991-07-24 JP JP20758391A patent/JPH0524554A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE41353E1 (en) | 1999-03-03 | 2010-05-25 | Panduit Corp. | Cable manager for network rack |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19981008 |