JP2005035496A - Transmission mechanism of travelling device - Google Patents

Transmission mechanism of travelling device Download PDF

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Publication number
JP2005035496A
JP2005035496A JP2003277049A JP2003277049A JP2005035496A JP 2005035496 A JP2005035496 A JP 2005035496A JP 2003277049 A JP2003277049 A JP 2003277049A JP 2003277049 A JP2003277049 A JP 2003277049A JP 2005035496 A JP2005035496 A JP 2005035496A
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turning
gear
rotation
clutch
differential mechanism
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JP2003277049A
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JP4336954B2 (en
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Mikiya Shirakata
幹也 白方
Takahiko Kamimura
孝彦 上村
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Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
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Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem wherein mounting of a differential mechanism and a clutch for turning is troublesome, and upsizing and maintenance work of a transmission case are troublesome. <P>SOLUTION: This transmission mechanism comprises right and left side clutches 20 for connecting or disconnecting the power transmission of a travelling device 1 to right and left axles 21, and the differential mechanism 23 for transmitting power to the cutoff axle 21 of the right and left side clutches 20. A transmission route on the upstream side of the differential mechanism 23 is provided with a transmission device 33 for turning. The transmission device 33 comprises a clutch 40 for linear motion for transmitting power from the differential mechanism 23 to the axles 21 during linear motion synchronously with the rotation from the right and left clutches 20, and a clutch 51 for turning for transmitting rotation to the axle 21 inside the turning on the left or right side during turning. An intermediate gear 53 for turning for transmitting rotation to a passive gear 15 and the clutch 51 to which the rotation from the engine is transmitted is disposed near the center of a side clutch shaft 14 having the right and left clutches 20. The passive gear 15 and the intermediate gear 53 are disposed close to a steering section 3 disposed on one side of the right and left sides in the machine body travel direction above the travelling device 1 with reference to the transmission device 33. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、走行装置の伝動機構に係るものである。   The present invention relates to a transmission mechanism of a traveling device.

従来、左右車軸への動力伝達を継脱する左右サイドクラッチと、切りにされたサイドクラッチが伝達すべき車軸へ動力伝達する差動機構と、該差動機構に回転伝達する旋回用クラッチとを設けた走行装置の伝動機構は公知である(例えば、特許文献1参照)。
特開平4−103472号公報(3頁、図1、図2)
Conventionally, a left and right side clutch that transfers power to the left and right axles, a differential mechanism that transmits power to the axle that the cut side clutch should transmit, and a turning clutch that transmits rotation to the differential mechanism The transmission mechanism of the provided traveling device is known (for example, refer to Patent Document 1).
JP-A-4-103472 (page 3, FIG. 1 and FIG. 2)

前記公知例は、差動機構および旋回用クラッチはミッションケースの外側に設けた構成のため、取付が面倒であるという課題がある。
しかし、差動機構および旋回用クラッチをミッションケースの内側に設けたのでは、ミッションケースそのものが大型化し、また、メンテナンス作業が面倒になるという別の課題も生じる。
The known example has a problem that mounting is troublesome because the differential mechanism and the turning clutch are provided outside the mission case.
However, if the differential mechanism and the turning clutch are provided inside the transmission case, the transmission case itself becomes large, and another problem that maintenance work becomes troublesome arises.

本願は、差動機構および旋回用伝達装置をミッションケース内に設けつつ、全体を小型にし、しかも、旋回用伝達装置等のメンテナンス作業の作業性を低下させないようにしたものである。
本発明では、走行装置1の左右車軸21、21への動力伝達を継脱する左右サイドクラッチ20を設け、前記左右サイドクラッチ20うちの切りにされた車軸21へ動力伝達する差動機構23を設け、該差動機構23の上手側の伝達経路には、該差動機構23が直進時の左右車軸21に前記左右サイドクラッチ20からの回転と同期して伝達する直進用クラッチ40と旋回時に前記左側または右側の旋回内側の車軸21に回転伝達する旋回用クラッチ51とを有する旋回用伝達装置33を設け、前記左右サイドクラッチ20を設けたサイドクラッチ軸14の中央付近にエンジンからの回転が伝達される受動歯車15と前記旋回用クラッチ51に回転伝達する旋回用中間歯車53を設け、該受動歯車15と旋回用中間歯車53は、前記旋回用伝達装置33を基準に、前記走行装置1の上方の機体走行方向左右何れか一側に設けた操縦部3に寄った側に設けた走行装置の伝動機構としたものであり、直進状態では左右サイドクラッチ20からの回転が車軸21に伝達され、操向レバーを傾倒操作すると、左右サイドクラッチ20の一方を切りにし、これに対応する車軸21には差動機構23の左右差動出力軸24のいずれかより回転が伝達されて旋回する。
差動機構23は、直進用クラッチ40が入りのときサイドクラッチ左右サイドクラッチ20から伝達される回転に同期した回転を車軸21に伝達し、旋回用クラッチ51が入りになってケース25に伝達する回転を変更すると、旋回内側となる車軸21を旋回外側の車軸21より遅く駆動回転させて行う緩旋回や、旋回内側となる車軸を停止させて行なうブレーキターンや、旋回内側となる車軸を旋回外側の車軸と反対に駆動回転させて行なうスピンターン等が可能になり、この操向レバーの操作の操作位置に応じて直進用クラッチ40と旋回用クラッチ51の夫々の接続圧力を昇降制御する。
しかして、受動歯車15と旋回用中間歯車53は、旋回用伝達装置33に対して操縦部3に寄った側(内側)に設けられているから、操縦部3の反対側に設けた旋回用伝達装置33の着脱やメンテナンスは、操縦部3の反対側で操縦部3に邪魔されずに行える。
また、本発明では、走行装置1の左右車軸21、21への動力伝達を継脱する左右サイドクラッチ20を設け、前記左右サイドクラッチ20うちの切りにされた車軸21へ動力伝達する差動機構23を設け、該差動機構23の上手側の伝達経路には、該差動機構23が直進時の左右車軸21に前記左右サイドクラッチ20からの回転と同期して伝達する直進用クラッチ40と旋回時に前記左側または右側の旋回内側の車軸21に回転伝達する旋回用クラッチ51とを有する旋回用伝達装置33を設け、前記左右サイドクラッチ20を設けたサイドクラッチ軸14の中央にエンジンからの回転が伝達される受動歯車15と前記旋回用クラッチ51に回転伝達する旋回用中間歯車53を設け、該受動歯車15と旋回用中間歯車53は、前記旋回用伝達装置33を基準に、前記走行装置1の上方の機体走行方向左右何れか一側に設けた操縦部3に寄った側に設け、前記受動歯車15に噛合う直進用入力歯車37と前記旋回用中間歯車53に噛合う旋回用入力歯車52と差動機構23に回転伝達するケース回転出力歯車34は、旋回用中間軸35に夫々設けると共に、直進用入力歯車37と旋回用入力歯車52はケース回転出力歯車34に対して操縦部3より離れた側に設けた走行装置の伝動機構としたものであり、直進用入力歯車37と旋回用入力歯車52はケース回転出力歯車34に対して操縦部3より離れた側(外側)に設けているから、直進用入力歯車37と旋回用入力歯車52を旋回用中間軸35に対して外側に摺動させると、旋回用伝達装置33を取り外せる。
また、本発明では、走行装置1の左右車軸21、21への動力伝達を継脱する左右サイドクラッチ20を設け、前記左右サイドクラッチ20うちの切りにされた車軸21へ動力伝達する差動機構23を設け、該差動機構23の上手側の伝達経路には、該差動機構23が直進時の左右車軸21に前記左右サイドクラッチ20からの回転と同期して伝達する直進用クラッチ40と旋回時に前記左側または右側の旋回内側の車軸21に回転伝達する旋回用クラッチ51とを有する旋回用伝達装置33を設け、前記左右サイドクラッチ20を設けたサイドクラッチ軸14の中央にエンジンからの回転が伝達される受動歯車15と前記旋回用クラッチ51に回転伝達する旋回用中間歯車53を設け、該受動歯車15と旋回用中間歯車53は、前記旋回用伝達装置33を基準に、前記走行装置1の上方の機体走行方向左右何れか一側に設けた操縦部3に寄った側に設け、前記受動歯車15に噛合う直進用入力歯車37と前記旋回用中間歯車53に噛合う旋回用入力歯車52と差動機構23に回転伝達するケース回転出力歯車34は、旋回用中間軸35に夫々設け、直進用入力歯車37と旋回用入力歯車52はケース回転出力歯車34に対して操縦部3より離れた側に設けると共に、ケース回転出力歯車34および直進用入力歯車37に対して旋回用入力歯車52は最も操縦部3より離れた側に配置した走行装置の伝動機構としたものであり、ケース回転出力歯車34および直進用入力歯車37に対して大径の旋回用入力歯車52を一番操縦部3より離れた側(外側)に配置しているので、旋回用入力歯車52がメタル部材42aを外したミッションケース10の開口部から通して旋回用伝達装置33を着脱する。
In the present application, a differential mechanism and a turning transmission device are provided in a transmission case, the whole is made small, and the workability of maintenance work for the turning transmission device and the like is not lowered.
In the present invention, left and right side clutches 20 for connecting / disconnecting power transmission to the left and right axles 21, 21 of the traveling device 1 are provided, and a differential mechanism 23 for transmitting power to the axle 21 cut off of the left and right side clutches 20 is provided. In the upper transmission path of the differential mechanism 23, the differential mechanism 23 transmits to the left and right axles 21 when traveling straight in synchronism with the rotation from the left and right side clutches 20 and when the vehicle turns. A turning transmission device 33 having a turning clutch 51 for transmitting rotation to the left or right turning inner axle 21 is provided, and rotation from the engine is performed near the center of the side clutch shaft 14 provided with the left and right side clutches 20. A passive gear 15 to be transmitted and a turning intermediate gear 53 for transmitting rotation to the turning clutch 51 are provided. The passive gear 15 and the turning intermediate gear 53 are connected to the turning transmission gear 51. With reference to the device 33, the transmission mechanism of the traveling device provided on the side close to the control unit 3 provided on the left or right side of the aircraft traveling direction above the traveling device 1 is used. When the rotation from the clutch 20 is transmitted to the axle 21 and the steering lever is tilted, one of the left and right side clutches 20 is disconnected, and the corresponding axle 21 has the left and right differential output shaft 24 of the differential mechanism 23. The rotation is transmitted from either of them and turns.
The differential mechanism 23 transmits the rotation synchronized with the rotation transmitted from the side clutch left and right side clutch 20 to the axle 21 when the straight traveling clutch 40 is engaged, and the turning clutch 51 is engaged and transmitted to the case 25. When the rotation is changed, the axle 21 on the inside of the turn is driven and rotated slower than the axle 21 on the outside of the turn, the brake turn is performed by stopping the axle on the inside of the turn, or the axle on the inside of the turn is turned outside. A spin turn or the like can be performed by driving and rotating in the direction opposite to the vehicle axle, and the connection pressures of the straight traveling clutch 40 and the turning clutch 51 are controlled to be raised or lowered according to the operation position of the steering lever.
Thus, the passive gear 15 and the turning intermediate gear 53 are provided on the side (inner side) of the turning transmission device 33 that faces the control unit 3, so that the turning gear provided on the opposite side of the control unit 3 is provided. The attachment and detachment and maintenance of the transmission device 33 can be performed on the opposite side of the control unit 3 without being disturbed by the control unit 3.
Further, in the present invention, a left and right side clutch 20 for transferring power to the left and right axles 21 and 21 of the traveling device 1 is provided, and a differential mechanism for transmitting power to the axle 21 that is cut off of the left and right side clutches 20. 23, and in the transmission path on the upper side of the differential mechanism 23, a linear clutch 40 that transmits the differential mechanism 23 to the left and right axles 21 when traveling straight in synchronization with the rotation from the left and right side clutches 20; A turning transmission device 33 having a turning clutch 51 for transmitting rotation to the left or right turning inner axle 21 during turning is provided, and rotation from the engine is provided at the center of the side clutch shaft 14 provided with the left and right side clutches 20. Is provided, and a turning intermediate gear 53 for transmitting rotation to the turning clutch 51 is provided. The passive gear 15 and the turning intermediate gear 53 are provided for the turning. A straight input gear 37 that engages with the passive gear 15 and the swivel provided on the side closer to the control unit 3 provided on either the left or right side of the vehicle traveling direction above the traveling device 1 with respect to the reaching device 33 The turning input gear 52 that meshes with the intermediate gear 53 and the case rotation output gear 34 that transmits the rotation to the differential mechanism 23 are provided on the turning intermediate shaft 35, and the linear input gear 37 and the turning input gear 52 are This is a transmission mechanism for a traveling device provided on the side away from the control unit 3 with respect to the case rotation output gear 34, and the linear input gear 37 and the turning input gear 52 are operated with respect to the case rotation output gear 34. Since the linear input gear 37 and the turning input gear 52 are slid outward with respect to the turning intermediate shaft 35, the turning transmission device 33 can be removed.
Further, in the present invention, a left and right side clutch 20 for connecting / disconnecting power transmission to the left and right axles 21, 21 of the traveling device 1 is provided, and a differential mechanism for transmitting power to the axle 21 cut off of the left and right side clutches 20. 23, and in the transmission path on the upper side of the differential mechanism 23, a linear clutch 40 that transmits the differential mechanism 23 to the left and right axles 21 when traveling straight in synchronization with the rotation from the left and right side clutches 20; A turning transmission device 33 having a turning clutch 51 for transmitting rotation to the left or right turning inner axle 21 during turning is provided, and rotation from the engine is provided at the center of the side clutch shaft 14 provided with the left and right side clutches 20. Is provided, and a turning intermediate gear 53 for transmitting rotation to the turning clutch 51 is provided. The passive gear 15 and the turning intermediate gear 53 are provided for the turning. A straight input gear 37 that engages with the passive gear 15 and the swivel provided on the side closer to the control unit 3 provided on either the left or right side of the vehicle traveling direction above the traveling device 1 with respect to the reaching device 33 The turning input gear 52 that meshes with the intermediate gear 53 for rotation and the case rotation output gear 34 that transmits the rotation to the differential mechanism 23 are provided on the turning intermediate shaft 35, respectively, and the linear input gear 37 and the turning input gear 52 are the case. The rotation output gear 34 is provided on the side farther from the control unit 3, and the turning input gear 52 is disposed on the side farthest from the control unit 3 with respect to the case rotation output gear 34 and the linear input gear 37. This is a transmission mechanism of the device, and the large-diameter turning input gear 52 is arranged on the side (outside) farthest from the steering unit 3 with respect to the case rotation output gear 34 and the straight-traveling input gear 37. So for turning Power gear 52 is removable to swing transmission device 33 through the opening of the transmission case 10 to remove the metal member 42a.

請求項1では、旋回用伝達装置33の着脱等は、操縦部3の反対側で操縦部3に邪魔されずに広い作業空間で行え、メンテナンス作業を容易にできる。
請求項2では、直進用入力歯車37と旋回用入力歯車52を旋回用中間軸35に対して外側に摺動させて旋回用伝達装置33を取り外しでき、着脱が容易になる。
請求項3では、旋回用伝達装置33と差動機構23の回転伝達のギヤ設定において減速比の大きい旋回用入力歯車52の納まりを最もコンパクトにでき、全体を小型にできる。
In claim 1, the turning transmission device 33 can be attached and detached in a wide work space on the opposite side of the control unit 3 without being obstructed by the control unit 3, thereby facilitating maintenance work.
According to the second aspect, the straight transmission gear 37 and the turning input gear 52 can be slid outwardly with respect to the turning intermediate shaft 35 to remove the turning transmission device 33, so that the attachment / detachment is facilitated.
According to the third aspect of the present invention, the turning input gear 52 having a large reduction ratio can be made the most compact in the rotation transmission gear setting of the turning transmission device 33 and the differential mechanism 23, and the whole can be made compact.

本発明の実施例を図面により説明すると、1はコンバイン等の作業機の走行装置1、2は脱穀装置、3は機体走行方向左右何れか一側に設けた操縦部、4は刈取部であり、操縦部3の側部に刈取部4で刈り取った穀稈を脱穀装置2の穀稈供給搬送装置5に搬送する搬送装置6を設けている。
10は前記走行装置1にエンジンからの回転を伝達するミッションケースであり、上部位置にエンジンからの回転を無段階に変速して走行速度を変速する走行用油圧式主変速装置(ハイドロスタチックトランスミッション)を設け(図示省略)ている。
11は中間軸であり、実施例では走行用油圧式主変速装置の回転を複数の歯車選択的に噛み合わせる組合せにより変速する副変速軸により構成している。中間軸(副変速軸)11には一体的に回転するように歯車12群を設け、歯車群12には図示は省略するが、中間軸11より上手側の伝達軸(図示省略)の歯車(図示省略)を選択的に噛み合わせる。前記中間軸中間軸11にはセンターギヤ13を設け、センターギヤ13はサイドクラッチ軸14に固定の受動歯車15と常時噛合っている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. In addition, a conveying device 6 is provided on the side of the control unit 3 to convey the cereals harvested by the reaping unit 4 to the cereal supply and conveying device 5 of the threshing device 2.
Reference numeral 10 denotes a transmission case that transmits the rotation from the engine to the traveling device 1. The traveling hydraulic main transmission (hydrostatic transmission) shifts the rotation speed from the engine steplessly to the upper position to change the traveling speed. ) Is provided (not shown).
Reference numeral 11 denotes an intermediate shaft. In the embodiment, the intermediate shaft is constituted by a sub-transmission shaft that changes speed by a combination that selectively meshes the rotation of the traveling hydraulic main transmission. The intermediate shaft (sub-transmission shaft) 11 is provided with a group of gears 12 so as to rotate integrally. The gear group 12 is not shown in the figure, but a gear (not shown) on the transmission shaft (not shown) on the upper side of the intermediate shaft 11 ( (Not shown) are selectively engaged. A center gear 13 is provided on the intermediate shaft 11 and the center gear 13 is always meshed with a passive gear 15 fixed to the side clutch shaft 14.

サイドクラッチ軸14にはサイドクラッチ歯車16を摺動自在に設け、サイドクラッチ歯車16の一部またはサイドクラッチ歯車16に設けたクラッチ爪17を受動歯車15の内歯18に継脱自在に嵌合させて、左右サイドクラッチ20を形成する。左右サイドクラッチ20の構成は任意であり、実施例には限定されない。
サイドクラッチ歯車16は左右車軸21に設けた車軸歯車22に夫々噛み合わせて、車軸21に回転を伝達する。
しかして、サイドクラッチ軸14の近傍には差動機構23を設け、差動機構23はその左右差動出力軸24に相互の回転数を変更して出力する。差動機構23は、ミッションケース10内に回転自在にケース25を設け、ケース25内には前記左右差動出力軸24の夫々の先端を臨ませる。実施例の左右差動出力軸24は軸筒形状に形成し、左右差動出力軸24はミッションケース10に設けた取付軸26に夫々独立して回転するように嵌合させる。この左右差動出力軸24の基部には左右傘歯車28を相対峙するように設ける。左右傘歯車28も実施例では左右差動出力軸24の先端に一体に設け、取付軸26に遊嵌させている。
左右傘歯車28にはそれぞれケース25に固定のケース軸29に回転自在に取付けた中間傘歯車30を噛合わせ、前記ケース25の外周にはケース回転受動歯車31を設け、左右差動出力軸24の夫々に設けた旋回伝達歯車32は車軸歯車22に夫々噛み合わせる。
A side clutch gear 16 is slidably provided on the side clutch shaft 14, and a part of the side clutch gear 16 or a clutch pawl 17 provided on the side clutch gear 16 is detachably fitted to an internal tooth 18 of the passive gear 15. As a result, the left and right side clutches 20 are formed. The configuration of the left and right side clutch 20 is arbitrary and is not limited to the embodiment.
The side clutch gears 16 mesh with the axle gears 22 provided on the left and right axles 21, respectively, and transmit the rotation to the axles 21.
Thus, a differential mechanism 23 is provided in the vicinity of the side clutch shaft 14, and the differential mechanism 23 changes the mutual rotational speed to the left and right differential output shaft 24 and outputs it. The differential mechanism 23 is provided with a case 25 in the mission case 10 so as to be rotatable, and the tip of each of the left and right differential output shafts 24 faces in the case 25. The left-right differential output shaft 24 of the embodiment is formed in a cylindrical shape, and the left-right differential output shaft 24 is fitted to a mounting shaft 26 provided in the mission case 10 so as to rotate independently. Left and right bevel gears 28 are provided at the base of the left and right differential output shaft 24 so as to face each other. In the embodiment, the left and right bevel gears 28 are also integrally provided at the tip of the left and right differential output shaft 24 and are loosely fitted to the mounting shaft 26.
The left and right bevel gears 28 are meshed with intermediate bevel gears 30 rotatably attached to a case shaft 29 fixed to the case 25, and a case rotation passive gear 31 is provided on the outer periphery of the case 25. Each of the turning transmission gears 32 provided on the gears meshes with the axle gear 22.

差動機構23は、ケース回転受動歯車31を介してケース25の回転を変更し、左右差動出力軸24の夫々が出力する回転を変速させて走行装置1を旋回走行させる。
この場合、ケース25に伝達する回転を変更することにより、旋回内側となる車軸を旋回外側の車軸より遅く駆動回転させて行なう緩旋回と、旋回内側となる車軸を停止させて行なうブレーキターンと、旋回内側となる車軸を旋回外側の車軸と反対に駆動回転させて行なうスピンターンとを行え、ケース25に伝達する回転数の設定は任意である。
しかして、差動機構23の近傍には、前記ケース回転受動歯車31に回転を伝達する旋回用伝達装置33を設ける。
34はケース回転受動歯車31に常時噛合うケース回転出力歯車であり、旋回用中間軸35に該旋回用中間軸35と一体回転するように設ける。
この場合、サイドクラッチ軸14および差動機構23の左右差動出力軸24並びに旋回用中間軸35は、夫々軸心方向を左右方向となるように配置し、ケース回転出力歯車34は旋回用中間軸35の操縦部3に寄った側(内側)に設ける。
一方、ケース回転出力歯車34に対して旋回用中間軸35の操縦部3より離れた側(外側)には内周側ボス36を回転のみ自在に嵌合させ、内周側ボス36の操縦部3に寄った側には直進用入力歯車37を一体回転するように設ける。直進用入力歯車37は前記センターギヤ13と常時噛合っている受動歯車15に常時噛合せる。
The differential mechanism 23 changes the rotation of the case 25 via the case rotation passive gear 31 and shifts the rotation output by each of the left and right differential output shafts 24 to cause the traveling device 1 to turn.
In this case, by changing the rotation transmitted to the case 25, a slow turn performed by driving and rotating the axle on the inside of the turn slower than the axle on the outside of the turn, and a brake turn performed by stopping the axle on the inside of the turn, A spin turn performed by driving and rotating the axle on the inside of the turn opposite to the axle on the outside of the turn can be performed, and the setting of the number of revolutions transmitted to the case 25 is arbitrary.
Thus, in the vicinity of the differential mechanism 23, a turning transmission device 33 for transmitting rotation to the case rotation passive gear 31 is provided.
Reference numeral 34 denotes a case rotation output gear that is always meshed with the case rotation passive gear 31 and is provided on the turning intermediate shaft 35 so as to rotate integrally with the turning intermediate shaft 35.
In this case, the side clutch shaft 14, the left and right differential output shafts 24 of the differential mechanism 23, and the turning intermediate shaft 35 are arranged so that the axial directions are the left and right directions, respectively, and the case rotation output gear 34 is the turning intermediate gear 34. Provided on the side (inner side) of the shaft 35 close to the control unit 3.
On the other hand, the inner peripheral boss 36 is fitted to the case rotation output gear 34 on the side (outside) of the turning intermediate shaft 35 away from the control unit 3 so as to be rotatable only. On the side close to 3, a linear input gear 37 is provided so as to rotate integrally. The rectilinear input gear 37 is always meshed with the passive gear 15 that is meshed with the center gear 13 at all times.

しかして、前記旋回用中間軸35の外周部分にはケーシング38を位置させ、ケーシング38は内周側ボス36に対して操縦部3より離れた側の旋回用中間軸35の外周部分に一体回転するように設ける。ケーシング38の内周にはディスクを設け、該ディスクは前記内周側ボス36の外周に設けたディスクと継脱自在に当接するようにして直進用クラッチ40を構成する。
直進用クラッチ40は旋回操作時以外では常時入り状態に構成し、前記センターギヤ13の回転を直進用入力歯車37により内周側ボス36に伝達し、内周側ボス36の回転を直進用クラッチ40介してケーシング38に伝達し、ケーシング38の回転により旋回用中間軸35を回転させてケース回転歯車34を回転させる。
この場合、直進用クラッチ40は常時入り状態のため、差動機構23は、差動機構23経由の左右車軸21に伝達される回転と左右サイドクラッチ20経由で伝達される回転とが同じになるようにしてメカロックを防止しており、そのため、左右差動出力軸24、24の夫々が同じ回転数になるようにケース25を回転させて直進用に作動させ、同一回転している左右傘歯車28の回転を旋回伝達歯車32を介して左右車軸21に伝達させて直進する。
Thus, the casing 38 is positioned on the outer peripheral portion of the turning intermediate shaft 35, and the casing 38 rotates integrally with the outer peripheral portion of the turning intermediate shaft 35 on the side farther from the control unit 3 than the inner peripheral boss 36. Provide to do. A disk is provided on the inner periphery of the casing 38, and the disk is configured so as to contact the disk provided on the outer periphery of the inner peripheral boss 36 so as to be detachable.
The rectilinear clutch 40 is always in an engaged state except during a turning operation, and the rotation of the center gear 13 is transmitted to the inner peripheral boss 36 by the rectilinear input gear 37, and the rotation of the inner peripheral boss 36 is transmitted. The rotation is transmitted to the casing 38 via the rotation of the casing 38, and the turning intermediate shaft 35 is rotated by the rotation of the casing 38 to rotate the case rotation gear 34.
In this case, since the straight traveling clutch 40 is always engaged, the rotation transmitted to the left and right axles 21 via the differential mechanism 23 and the rotation transmitted via the left and right side clutch 20 are the same in the differential mechanism 23. Thus, the mechanical lock is prevented. Therefore, the case 25 is rotated so that each of the left and right differential output shafts 24 and 24 has the same rotational speed, and the case 25 is operated for straight traveling, and the left and right bevel gears rotating in the same direction. The rotation of 28 is transmitted to the left and right axles 21 via the turning transmission gear 32 and goes straight.

前記ケーシング38の操縦部3より離れた側の外周には旋回クラッチ用ドラム41を設け、旋回クラッチ用ドラム41の基部側(操縦部3より離れた側)にはピストン42を設け、ピストン42とミッションケース10の操縦部3より離れた側のメタル部材42aとの間に外側シリンダ室43を形成する。
旋回クラッチ用ドラム41の操縦部3より離れた側(外側)には外側プレート44を設け、送油口45から外側シリンダ室43に送油されると、ピストン42と旋回クラッチ用ドラム41と外側プレート44が操縦部3に向かって移動してケーシング38のディスクを内周側ボス36の外周のディスクから離脱させて、直進用クラッチ40を切りにする。
外側プレート44より内側の旋回クラッチ用ドラム41には内側プレート46を設け、前記外側プレート44と内側プレート46の間に直進用クラッチ40を入り方向に付勢するスプリング47を設け、スプリング47により直進用クラッチ40を常時入りに付勢する。
前記内周側ボス36の外周には外周側ボス50を回転のみ自在に設ける。外周側ボス50は外側プレート44よりも操縦部3に寄った側(内側)に位置し、外周側ボス50の外周に設けたディスクにケーシング38の内周に設けたディスクを、継脱自在に当接するようにして旋回用クラッチ51を構成する。
したがって、ケーシング38内の軸心方向の外側に直進用クラッチ40を、内側に旋回用クラッチ51を夫々配置する。
A swing clutch drum 41 is provided on the outer periphery of the casing 38 on the side away from the control unit 3, and a piston 42 is provided on the base side (side away from the control unit 3) of the swing clutch drum 41. An outer cylinder chamber 43 is formed between the mission case 10 and the metal member 42a on the side away from the control section 3.
An outer plate 44 is provided on the side (outer side) of the turning clutch drum 41 away from the control unit 3. When oil is supplied from the oil supply port 45 to the outer cylinder chamber 43, the piston 42, the turning clutch drum 41, and the outer side are disposed. The plate 44 moves toward the control unit 3 to disengage the disk of the casing 38 from the disk on the outer periphery of the inner peripheral boss 36, and the linear clutch 40 is disengaged.
An inner plate 46 is provided on the drum 41 for the turning clutch inside the outer plate 44, and a spring 47 is provided between the outer plate 44 and the inner plate 46 to urge the linear clutch 40 in the entering direction. The clutch 40 is always energized.
An outer peripheral boss 50 is provided on the outer periphery of the inner peripheral boss 36 so as to be rotatable only. The outer peripheral boss 50 is located on the side closer to the control unit 3 (inner side) than the outer plate 44, and the disk provided on the outer periphery of the outer peripheral boss 50 can be detachably attached to the disk provided on the inner periphery of the casing 38. The turning clutch 51 is configured so as to abut.
Therefore, the straight clutch 40 is disposed outside the casing 38 in the axial direction, and the turning clutch 51 is disposed inside.

しかして、内周側ボス36の直進用入力歯車37より外側の外周側ボス50には旋回用入力歯車52を設け、旋回用入力歯車52には旋回用中間歯車53を噛み合わせる。
旋回用クラッチ51は、外側シリンダ室43に送油して直進用クラッチ40を切りにすると、入りとなって、旋回用中間歯車53→旋回用入力歯車52→外周側ボス50→ディスク→ケーシング38→旋回用中間軸35を介してケース回転歯車34に伝達し、差動機構23を旋回用に作動させる。
即ち、直進用クラッチ40と旋回用クラッチ51は何れか一方が切りになると何れか他方が入りになるようにケーシング38に、夫々のディスクの移動方向に並設し、直進用クラッチ40のディスクの移動方向切り側に外側シリンダ室43を設け、直進用クラッチ40のディスクの移動方向入り側にスプリング47を設け、外側シリンダ室43に送油すると、ピストン42が旋回クラッチ用ドラム41と外側プレート44を移動させ、ケーシング38のディスクが内周側ボス36の外周のディスクから離脱して、直進用クラッチ40を切りにし、ケーシング38の移動により内側プレート46が移動して旋回用クラッチ51を入りにする。
Accordingly, the turning input gear 52 is provided on the outer peripheral boss 50 outside the linearly moving input gear 37 of the inner peripheral boss 36, and the turning intermediate gear 53 is engaged with the turning input gear 52.
When the clutch 51 for turning is fed to the outer cylinder chamber 43 and the clutch 40 for straight running is disengaged, the turning clutch 51 enters the turning intermediate gear 53 → the turning input gear 52 → the outer boss 50 → the disk → the casing 38. → Transmitted to the case rotating gear 34 via the turning intermediate shaft 35 to operate the differential mechanism 23 for turning.
That is, when either one of the rectilinear clutch 40 and the turning clutch 51 is disengaged, the casing 38 is juxtaposed in the moving direction of the respective discs so that either one is engaged. The outer cylinder chamber 43 is provided on the moving direction cut side, the spring 47 is provided on the moving direction entering side of the disc of the straight traveling clutch 40, and when the oil is fed to the outer cylinder chamber 43, the piston 42 is rotated with the drum 41 for the turning clutch and the outer plate 44. The disc of the casing 38 is disengaged from the disc of the outer circumference of the inner peripheral boss 36, the linear clutch 40 is disengaged, and the inner plate 46 is moved by the movement of the casing 38 to enter the turning clutch 51. To do.

この場合、旋回用クラッチ51は、ディスクの接触圧力を変更し、回転伝達「0」の切り状態(直進用クラッチ40が入りで接触圧力が「0」)から入り状態へ無段階に伝達するようにし、これにより、前記差動機構23のケース25の回転を、前記したように、緩旋回と、ブレーキターンと、スピンターンとをできるように変速する。
したがって、旋回用伝達装置33には、差動機構23を旋回用に作動させるための回転の伝達を継脱させる旋回用クラッチ51と、差動機構23を直進用に作動させるために回転伝達を継脱させる直進用クラッチ40とを設けている。
なお、実施例では、ブレーキターンは、差動機構23により旋回内側の車軸21の回転を停止させて行い、機体の制動は後述する走行速度を変更操作する主変速レバーにより行う。また、別途駐車ブレーキペダルを設けてもよい。
しかして、前記旋回用中間歯車53は、受動歯車15の操縦部3より離れた側(外側)に、受動歯車15と一体状に形成してサイドクラッチ軸14に固定状態に取付ける。
In this case, the turning clutch 51 changes the contact pressure of the disk and continuously transmits the rotation transmission “0” from the disconnected state (the straight traveling clutch 40 is engaged and the contact pressure is “0”) to the engaged state. As a result, the rotation of the case 25 of the differential mechanism 23 is changed so as to perform a slow turn, a brake turn, and a spin turn as described above.
Therefore, the turning transmission device 33 receives the rotation transmission for moving the differential mechanism 23 for straight travel, and the turning clutch 51 for transferring the rotation transmission for operating the differential mechanism 23 for turning. A straight-forward clutch 40 that is connected and detached is provided.
In the embodiment, the brake turn is performed by stopping the rotation of the axle 21 on the inner side of the turn by the differential mechanism 23, and braking of the airframe is performed by a main transmission lever that changes the traveling speed described later. A separate parking brake pedal may be provided.
Thus, the turning intermediate gear 53 is formed integrally with the passive gear 15 on the side (outside) of the passive gear 15 away from the control unit 3 and attached to the side clutch shaft 14 in a fixed state.

この場合、受動歯車15と旋回用中間歯車53は、ケーシング38に対して操縦部3に寄った側(内側)に設け、受動歯車15と旋回用中間歯車53の外側に旋回用伝達装置33を配置する。
即ち、旋回用伝達装置33は、この旋回用伝達装置33に回転を出力する受動歯車15および旋回用中間歯車53を基準に、操縦部3の反対側に設けることで、旋回用伝達装置33を外側(反操縦部3側)に取り外すことができ、旋回用伝達装置33の着脱自在構成を採用するに際し有利であり、メンテナンス作業が容易になる。
また、直進用入力歯車37と旋回用入力歯車52はケース回転出力歯車34に対して操縦部3より離れた側(外側)に設け、直進用入力歯車37と旋回用入力歯車52を旋回用中間軸35より外側に摺動させて、旋回用伝達装置33を取り外せるように構成する。
即ち、旋回用伝達装置33の回転を差動機構23に出力するケース回転出力歯車34はミッションケース10に残しつつ、旋回用伝達装置33のケーシング38と旋回クラッチ用ドラム41と内周側ボス36と外周側ボス50を、一体的に着脱自在構成とすることも可能であり、合理的な構成になる。
したがって、ミッションケース10全体を分解することなく、旋回用伝達装置33の部分のみ分解可能であり、しかも、着脱分解構成をシンプルに且つコンパクトに構成でき、コストも低くできる。
In this case, the passive gear 15 and the turning intermediate gear 53 are provided on the side (inner side) of the casing 38 close to the control unit 3, and the turning transmission device 33 is provided outside the passive gear 15 and the turning intermediate gear 53. Deploy.
That is, the turning transmission device 33 is provided on the opposite side of the control unit 3 with respect to the passive gear 15 and the turning intermediate gear 53 that output rotation to the turning transmission device 33, so that the turning transmission device 33 is provided. It can be removed to the outside (the counter-control unit 3 side), which is advantageous when adopting a detachable configuration of the turning transmission device 33 and facilitates maintenance work.
Further, the rectilinear input gear 37 and the turning input gear 52 are provided on the side (outside) away from the control unit 3 with respect to the case rotation output gear 34, and the rectilinear input gear 37 and the turning input gear 52 are arranged in the middle for turning. The turning transmission device 33 can be removed by sliding outward from the shaft 35.
That is, while the case rotation output gear 34 that outputs the rotation of the turning transmission device 33 to the differential mechanism 23 remains in the transmission case 10, the casing 38, the turning clutch drum 41, and the inner peripheral boss 36 of the turning transmission device 33 are left. It is also possible to make the outer boss 50 integrally detachable, which is a rational configuration.
Therefore, only the turning transmission device 33 can be disassembled without disassembling the entire mission case 10, and the detachable disassembly configuration can be configured simply and compactly, and the cost can be reduced.

しかして、旋回用入力歯車52および旋回用中間歯車53とケース回転歯車34とは、サイドクラッチ20から車軸21に伝達する回転に対して所定の旋回半径となる回転を伝達しうるギヤ比に設定する(旋回用クラッチ51が完全に入り状態のとき前記差動機構23がスピンターン用の出力可能に設定)。
この場合、旋回用伝達装置33は、ケース回転出力歯車34および直進用入力歯車37に対して旋回用入力歯車52を一番操縦部3より離れた側(外側)に配置する。
この構成により、旋回用伝達装置33と差動機構23の回転伝達のギヤ設定において減速比の大きい旋回用入力歯車52の納まりを最もコンパクトにでき、全体を小型にできる。
また、差動機構23のケース回転受動歯車31は、ケース25を基準に、ケース25の操縦部3に寄った側(内側)に設ける。これにより、旋回用伝達装置33の旋回用入力歯車52の納まりを一層コンパクトにでき、全体を小型にできる。
即ち、ケース回転受動歯車31の位置により、左右差動出力軸24(取付軸26)と旋回用中間軸35との軸間距離が決まるが、ケース回転受動歯車31内側に設けることで側面視旋回用伝達装置33と重合させることができ、左右差動出力軸24(取付軸26)と旋回用中間軸35との軸間を短くして、全体を小型にできる。
また、差動機構23のケース25は、旋回用伝達装置33を設けた旋回用中間軸35の下方に配置する。このように差動機構23のケース25を配置すると、旋回用伝達装置33と差動機構23との間にカウンタ軸を設けることが不要となり、軽量化とコストダウンに貢献する。
Thus, the turning input gear 52 and the turning intermediate gear 53 and the case rotating gear 34 are set to a gear ratio capable of transmitting a rotation having a predetermined turning radius with respect to the rotation transmitted from the side clutch 20 to the axle 21. (When the turning clutch 51 is completely engaged, the differential mechanism 23 is set to enable output for spin turn).
In this case, the turning transmission device 33 arranges the turning input gear 52 on the side (outside) farthest from the steering unit 3 with respect to the case rotation output gear 34 and the straight-traveling input gear 37.
With this configuration, in the rotation transmission gear setting of the turning transmission device 33 and the differential mechanism 23, the accommodation of the turning input gear 52 having a large reduction ratio can be made most compact, and the whole can be made compact.
Further, the case rotation passive gear 31 of the differential mechanism 23 is provided on the side (inner side) of the case 25 close to the steering unit 3 with respect to the case 25. Thereby, the accommodation of the turning input gear 52 of the turning transmission device 33 can be made more compact, and the whole can be made smaller.
That is, the distance between the left and right differential output shaft 24 (mounting shaft 26) and the turning intermediate shaft 35 is determined by the position of the case rotating passive gear 31. Therefore, the distance between the left and right differential output shafts 24 (mounting shafts 26) and the turning intermediate shaft 35 can be shortened, and the overall size can be reduced.
The case 25 of the differential mechanism 23 is disposed below the turning intermediate shaft 35 provided with the turning transmission device 33. If the case 25 of the differential mechanism 23 is arranged in this way, it is not necessary to provide a counter shaft between the turning transmission device 33 and the differential mechanism 23, which contributes to weight reduction and cost reduction.

しかして、図6は、他の実施例を示し、左右サイドクラッチ20は、所謂ディスククラッチにより構成する。
即ち、プッシュシリンダを用いた爪式左右サイドクラッチ20では、左右サイドクラッチ20の入り切りの際のショックが必ず残り、これが走行中不快感の原因となっており、また、高負荷時では爪が抜けにくいので入り切りに伴う作動時間に遅れが発生し、また、油圧回路・配管が複雑になる等の課題がある。
そこで、ディスククラッチ構成の左右サイドクラッチ20とすることで、前記課題を克服する。また、左右左右サイドクラッチ20は左右同一構成のものをサイドクラッチ軸14の左右側に夫々設けているので、プッシュシリンダおよびシフタ・フォーク・配管等が不要となって、メンテナンス性が向上し、コストダウン・軽量化が図れ、コンパクトにでき、シフト作動部が無いので、組立ても容易であり、また、左右サイドクラッチ20に高負荷が掛かる大型コンバインにも適している。
左右サイドクラッチ20の具体的構成は、サイドクラッチ軸14の中央部に受動歯車15を固定状態に設け、受動歯車15の左右側のサイドクラッチ軸14にサイドクラッチ歯車16を回転自在に設け、サイドクラッチ歯車16にはボス部材60を夫々設ける。ボス部材60の外周にはディスクを設け、該ディスクはサイドクラッチ軸14と一体回転するケーシング61のディスクに継脱自在に当接するようにして構成する。
FIG. 6 shows another embodiment, and the left and right side clutches 20 are so-called disc clutches.
That is, in the claw-type left and right side clutch 20 using a push cylinder, the shock when the left and right side clutch 20 is turned on and off always remains, which causes discomfort during traveling, and the claw comes off at high loads. Since it is difficult, there are problems such as a delay in the operation time associated with turning on and off, and a complicated hydraulic circuit and piping.
Therefore, the left and right side clutch 20 having a disk clutch configuration is used to overcome the above-described problem. In addition, the left and right and left and right side clutches 20 have the same configuration on the left and right sides of the side clutch shaft 14 respectively, so that a push cylinder, shifter, fork, piping, etc. are not required, improving maintainability and cost. It can be reduced in weight and weight, can be made compact, has no shift operating part, is easy to assemble, and is also suitable for a large combine that places a heavy load on the left and right side clutches 20.
The specific structure of the left and right side clutch 20 is as follows. The passive gear 15 is fixedly provided at the center of the side clutch shaft 14, and the side clutch gear 16 is rotatably provided on the left and right side clutch shafts 14 of the passive gear 15. Each clutch gear 16 is provided with a boss member 60. A disk is provided on the outer periphery of the boss member 60, and the disk is configured to be in contact with the disk of the casing 61 that rotates integrally with the side clutch shaft 14 so as to be freely removable.

62はケーシング61の外側に設けたドラム、63はピストン、64はピストン63とミッションケース10のメタル部材65との間に形成したシリンダ室、66はケーシング61のディスクを常時入り方向に付勢するバネである。
左右サイドクラッチ20は、バネ66によりケーシング61のディスクとボス部材60のディスクとが常時押し付けられて「入り」となり、受動歯車15によりサイドクラッチ軸14に伝達された回転がケーシング61に伝達され、ケーシング61に伝達された回転が左右サイドクラッチ20を介してサイドクラッチ歯車16に伝達される。
反対に、左右サイドクラッチ20はシリンダ室64への送油によりケーシング61が受動歯車15に向かって移動することで、ケーシング61のディスクがボス部材60のディスクから離れて「切り」になる。
62 is a drum provided outside the casing 61, 63 is a piston, 64 is a cylinder chamber formed between the piston 63 and the metal member 65 of the transmission case 10, and 66 urges the disk of the casing 61 in the always entering direction. It is a spring.
In the left and right side clutch 20, the disk of the casing 61 and the disk of the boss member 60 are always pressed by the spring 66 to “enter”, and the rotation transmitted to the side clutch shaft 14 by the passive gear 15 is transmitted to the casing 61. The rotation transmitted to the casing 61 is transmitted to the side clutch gear 16 via the left and right side clutch 20.
On the contrary, the left and right side clutch 20 moves to the passive gear 15 by the oil feeding to the cylinder chamber 64, so that the disk of the casing 61 is separated from the disk of the boss member 60 and is “cut”.

しかして、前記サイドクラッチ軸14の近傍の、差動機構23のケース25に回転を伝達させる旋回用伝達装置33は、旋回用クラッチ51を設けて構成し、直進用クラッチは設けない。
この場合、ディスククラッチ構成の左右サイドクラッチ20を採用し、左右サイドクラッチ20のディスクを徐々に離しながら旋回用クラッチ51を入りにすることで、円滑な旋回走行にし、左右の左右サイドクラッチ20と旋回用クラッチ51とは、旋回方向内側となる車軸21に回転を伝達していた左右サイドクラッチ20は徐々にディスクを離して切りにしつつ、左右サイドクラッチ20が完全に切りになる前より旋回用クラッチ51の油圧を立ち上げて入りにする。
67は操向レバー(パワステレバー)の操作位置を検出する操向レバー位置検出部(ポテンショメータ)であり、操向レバー位置検出部67により検出した操向レバーの操作位置に応じて左右サイドクラッチ20と旋回用伝達装置33の旋回用クラッチ51の夫々の接続圧力を昇降制御する。
Therefore, the turning transmission device 33 that transmits the rotation to the case 25 of the differential mechanism 23 in the vicinity of the side clutch shaft 14 is provided with the turning clutch 51, and is not provided with the rectilinear clutch.
In this case, the left and right side clutch 20 having a disc clutch configuration is adopted, and the turning clutch 51 is turned on while gradually releasing the discs of the left and right side clutches 20 to achieve smooth turning traveling. The left and right side clutch 20 that has transmitted the rotation to the axle 21 on the inner side in the turning direction is gradually turned away from the disc while turning the clutch 51 for turning from before the left and right side clutch 20 is completely turned off. The hydraulic pressure of the clutch 51 is raised and turned on.
Reference numeral 67 denotes a steering lever position detector (potentiometer) that detects the operating position of the steering lever (power steering lever). The left and right side clutches 20 correspond to the operating position of the steering lever detected by the steering lever position detector 67. The connection pressure of each of the turning clutches 51 of the turning transmission device 33 is controlled to be raised and lowered.

旋回用クラッチ51の構成は任意であるが、旋回用中間軸35にケーシング38を回転のみ自在に嵌合させ、ケーシング38の内周にはディスクを設け、該ディスクは旋回用中間軸35と一体回転するボス部材68の外周に設けたディスクと継脱自在に当接するようにして旋回用クラッチ51を構成し、この旋回用クラッチ51により33を構成している。
旋回用クラッチ51は、外側シリンダ室43に送油すると、ピストン42がボス部材68のディスクをケーシング38のディスクに押し付けて旋回用クラッチ51を入りにする。
なお、本実施例においても、旋回用入力歯車52および旋回用中間歯車53とケース回転歯車34とは、サイドクラッチ左右サイドクラッチ20から車軸21に伝達する回転に対して所定の旋回半径となる回転を伝達しうるギヤ比に設定し、緩旋回、ブレーキターン、あるいはスピンターン用の任意の出力可能に設定する。
前記左右サイドクラッチ20は、バネ66によりディスクを常時入り方向に付勢しているから、旋回時のみの油圧作動になり、馬力ロスが少ない。また、エンジン停止中でも、クラッチ「入り」状態のため、転がる心配が無い。
The structure of the turning clutch 51 is arbitrary, but the casing 38 is fitted to the turning intermediate shaft 35 so as to be rotatable only, and a disk is provided on the inner periphery of the casing 38, and the disk is integrated with the turning intermediate shaft 35. The turning clutch 51 is configured so as to be in a freely detachable contact with a disk provided on the outer periphery of the rotating boss member 68, and the turning clutch 51 constitutes 33.
When the turning clutch 51 feeds oil to the outer cylinder chamber 43, the piston 42 presses the disk of the boss member 68 against the disk of the casing 38 to turn on the turning clutch 51.
Also in this embodiment, the turning input gear 52, the turning intermediate gear 53, and the case rotating gear 34 rotate with a predetermined turning radius with respect to the rotation transmitted from the side clutch left / right side clutch 20 to the axle 21. Is set to a gear ratio that can be transmitted, and can be set to any output for slow turn, brake turn, or spin turn.
Since the left and right side clutch 20 always urges the disk in the entering direction by the spring 66, the hydraulic operation is performed only during turning, and the horsepower loss is small. Even when the engine is stopped, the clutch is “engaged” so there is no fear of rolling.

しかして、図9、10は、他の実施例を示し、左右サイドクラッチ20は、所謂ディスククラッチにより構成すると共に、サイドクラッチ軸14を左右移動可能にして、ピストンとしての構成も兼用するように構成する。
即ち、サイドクラッチ軸14に受動歯車15を回転方向のみならず軸方向にも固定状態に取付ける。受動歯車15の左右側のサイドクラッチ軸14にはボス部材70を摺動のみ自在に設け、ボス部材70の外周にはディスクを設ける。ボス部材70のディスクにはサイドクラッチ歯車16と一体回転するケーシング71に設けたディスクに継脱自在に当接するようにして左右サイドクラッチ20を構成する。
72は軸装部分のサイドクラッチ軸14の端面とミッションケース10との間に形成したシリンダ室、73はケーシング71のディスクを常時入り方向に付勢するバネ、74はバネ73の受動歯車15側のケーシング71に設けたプレート74、75はプレート74に接離する受動歯車15の両側に設けたボス部75である。
図9は直進状態を示し、シリンダ室72の油圧が抜かれており、サイドクラッチ軸14は左右中央の直進位置に位置し、受動歯車15の左右のボス部75が何れもプレート74に当接し、ケーシング71のディスクにボス部材70のディスクを押し付け、左右サイドクラッチ20の両方が「入り」となる。
次に、左右何れか一方のシリンダ室72に送油することで、サイドクラッチ軸14を左右何れか一方に移動させ、ケーシング71に設けたバネ73に対する受動歯車15のボス部75の押し付けを解除させ、ボス部材70のディスクがサイドクラッチ歯車16のケーシング71のディスクから離れて一方のサイドクラッチ20が「切り」となり、他方のサイドクラッチ20は中立位置より移動した受動歯車15のボス部75が接近移動した分プレート74およびバネ73を介してケーシング71のディスクとボス部材70のディスクとを強く押し付けて「入り」にして、直進状態より走行抵抗が大きくなる旋回走行でも確実に回転を伝達する。
9 and 10 show another embodiment, and the left and right side clutches 20 are constituted by so-called disk clutches, and the side clutch shaft 14 can be moved left and right so that it can also be used as a piston. Constitute.
That is, the passive gear 15 is fixed to the side clutch shaft 14 not only in the rotational direction but also in the axial direction. A boss member 70 is slidably provided on the left and right side clutch shafts 14 of the passive gear 15, and a disk is provided on the outer periphery of the boss member 70. The left and right side clutches 20 are configured such that the discs of the boss members 70 are in contact with the discs provided in the casing 71 that rotates integrally with the side clutch gears 16 so as to be detachable.
72 is a cylinder chamber formed between the end face of the side clutch shaft 14 of the shaft mounting portion and the transmission case 10, 73 is a spring that constantly biases the disk of the casing 71 in the entering direction, and 74 is the passive gear 15 side of the spring 73. Plates 74 and 75 provided in the casing 71 are boss portions 75 provided on both sides of the passive gear 15 that contacts and separates from the plate 74.
FIG. 9 shows a straight traveling state, in which the hydraulic pressure in the cylinder chamber 72 is released, the side clutch shaft 14 is positioned at the straight traveling position at the center of the left and right, and the left and right boss portions 75 of the passive gear 15 are in contact with the plate 74. The disc of the boss member 70 is pressed against the disc of the casing 71, and both the left and right side clutches 20 are “entered”.
Next, by sending oil to either the left or right cylinder chamber 72, the side clutch shaft 14 is moved to either the left or right side, and the pressing of the boss 75 of the passive gear 15 against the spring 73 provided on the casing 71 is released. The disc of the boss member 70 is separated from the disc of the casing 71 of the side clutch gear 16 so that one side clutch 20 is “disengaged”, and the other side clutch 20 has the boss portion 75 of the passive gear 15 moved from the neutral position. The disk of the casing 71 and the disk of the boss member 70 are strongly pressed through the minutely moved plate 74 and the spring 73 to “enter”, and the rotation is reliably transmitted even in the turning traveling where the traveling resistance is larger than the straight traveling state. .

しかして、前記差動機構23のケース25に回転数を変速しつつ伝達する旋回用クラッチ51の接続圧力制御パターンを、調整可能に構成する。
圃場条件による影響を受け、方向修正等が困難な場合があり、油圧制御ダイヤル76等の手動操作手段により操作角度に応じた旋回半径となるように予め設定されている旋回用クラッチ51の昇降圧ラインの傾斜を変更する。
したがって、圃場の条件適応性が向上し、操作性が向上する。
Therefore, the connection pressure control pattern of the turning clutch 51 that transmits the rotational speed to the case 25 of the differential mechanism 23 while shifting the speed is configured to be adjustable.
Depending on the field conditions, it may be difficult to correct the direction, etc., and the raising / lowering pressure of the turning clutch 51 set in advance so that the turning radius according to the operation angle is set by manual operation means such as the hydraulic control dial 76. Change the slope of the line.
Therefore, the condition adaptability of the field is improved and the operability is improved.

コンバインの側面図。The side view of a combine. ミッションケースの展開状態の縦断面略図。The longitudinal cross-sectional schematic of the expansion | deployment state of a mission case. ミッションケースの展開状態の旋回用クラッチ部分の縦断面略図。The longitudinal cross-sectional schematic of the clutch part for rotation of the unfolding state of a mission case. ミッションケースと操縦部との制御配線概略図。The control wiring schematic of a mission case and a control part. 旋回クラッチと直進クラッチの接続圧力の昇降ラインの制御説明図。Control explanatory drawing of the raising / lowering line of the connection pressure of a turning clutch and a rectilinear clutch. サイドクラッチの他の実施例のミッションケースの展開状態の縦断面略図。The longitudinal cross-sectional schematic of the expansion | deployment state of the mission case of the other Example of the side clutch. 同ブロック図。The block diagram. 同フロー図。FIG. サイドクラッチの他の実施例の直進状態の縦断面略図。The longitudinal cross-section schematic of the straight-ahead state of the other Example of the side clutch. 同旋回直進状態の縦断面略図。The longitudinal cross-section schematic of the turning straight advance state. 旋回用クラッチの接続圧力制御パターン調整可能にする実施例のブロック図。The block diagram of the Example which enables the connection pressure control pattern adjustment of the clutch for rotation. 同作用状態を示す制御説明図。Control explanatory drawing which shows the action state.

符号の説明Explanation of symbols

1…走行装置、2…脱穀装置、3…操縦部、4…刈取部、5…穀稈供給搬送装置、6…搬送装置、10…ミッションケース、11…中間軸(副変速軸)、12…歯車群、13…センターギヤ、14…サイドクラッチ軸、15…受動歯車、16…サイドクラッチ歯車、17…クラッチ爪、18…内歯、20…左右サイドクラッチ、21…車軸、22…車軸歯車、23…差動機構、24…左右差動出力軸、25…ケース、28…左右傘歯車、29…軸、30…中間傘歯車、31…ケース回転受動歯車、32…旋回伝達歯車、33…旋回用伝達装置、34…ケース回転歯車、35…旋回用中間軸、36…内周側ボス、37…直進用入力歯車、38…ケーシング、40…直進用クラッチ、41…ドラム、42…ピストン、42a…メタル部材、43…外側シリンダ室、44…外側プレート、45…送油口、46…内側プレート、47…スプリング、50…外側ボス、51…旋回用クラッチ、60…ボス部材、61…ケーシング、62…ドラム、63…ピストン、64…シリンダ室、65…メタル部材、66…バネ、67…操向レバー位置検出部、68…ボス部材、70…ボス部材、71…ケーシング、72…シリンダ室、73…バネ、74…プレート、75…ボス部、76…油圧制御ダイヤル。   DESCRIPTION OF SYMBOLS 1 ... Traveling device, 2 ... Threshing device, 3 ... Steering part, 4 ... Harvesting part, 5 ... Grain supply feeding device, 6 ... Conveying device, 10 ... Transmission case, 11 ... Intermediate shaft (sub-transmission shaft), 12 ... Gear group, 13 ... center gear, 14 ... side clutch shaft, 15 ... passive gear, 16 ... side clutch gear, 17 ... clutch claw, 18 ... internal teeth, 20 ... left and right side clutch, 21 ... axle, 22 ... axle gear, 23 ... Differential mechanism, 24 ... Left / right differential output shaft, 25 ... Case, 28 ... Left and right bevel gear, 29 ... Shaft, 30 ... Intermediate bevel gear, 31 ... Case rotation passive gear, 32 ... Swivel transmission gear, 33 ... Swivel Transmission device, 34 ... case rotating gear, 35 ... intermediate shaft for turning, 36 ... inner peripheral boss, 37 ... input gear for rectilinear advance, 38 ... casing, 40 ... clutch for rectilinear advance, 41 ... drum, 42 ... piston, 42a ... Metal members, 43 ... Side cylinder chamber, 44 ... outer plate, 45 ... oil feed port, 46 ... inner plate, 47 ... spring, 50 ... outer boss, 51 ... rotating clutch, 60 ... boss member, 61 ... casing, 62 ... drum, 63 ... Piston, 64 ... cylinder chamber, 65 ... metal member, 66 ... spring, 67 ... steering lever position detector, 68 ... boss member, 70 ... boss member, 71 ... casing, 72 ... cylinder chamber, 73 ... spring, 74 ... Plate, 75 ... boss portion, 76 ... hydraulic control dial.

Claims (3)

走行装置1の左右車軸21、21への動力伝達を継脱する左右サイドクラッチ20を設け、前記左右サイドクラッチ20うちの切りにされた車軸21へ動力伝達する差動機構23を設け、該差動機構23の上手側の伝達経路には、該差動機構23が直進時の左右車軸21に前記左右サイドクラッチ20からの回転と同期して伝達する直進用クラッチ40と旋回時に前記左側または右側の旋回内側の車軸21に回転伝達する旋回用クラッチ51とを有する旋回用伝達装置33を設け、前記左右サイドクラッチ20を設けたサイドクラッチ軸14の中央付近にエンジンからの回転が伝達される受動歯車15と前記旋回用クラッチ51に回転伝達する旋回用中間歯車53を設け、該受動歯車15と旋回用中間歯車53は、前記旋回用伝達装置33を基準に、前記走行装置1の上方の機体走行方向左右何れか一側に設けた操縦部3に寄った側に設けた走行装置の伝動機構。 The left and right side clutches 20 for transferring power to the left and right axles 21 and 21 of the traveling device 1 are provided, and a differential mechanism 23 for transmitting power to the cut axles 21 of the left and right side clutches 20 is provided. In the transmission path on the upper side of the moving mechanism 23, the differential mechanism 23 transmits to the left and right axles 21 when traveling straight in synchronism with the rotation from the left and right side clutches 20 and the left or right side when turning. A turning transmission device 33 having a turning clutch 51 for transmitting the rotation to the axle 21 on the inside of the turning is provided, and the rotation from the engine is transmitted to the vicinity of the center of the side clutch shaft 14 provided with the left and right side clutches 20. A turning intermediate gear 53 for transmitting rotation to the gear 15 and the turning clutch 51 is provided, and the passive gear 15 and the turning intermediate gear 53 are connected to the turning transmission device 33. Quasi on, the running device 1 of the upper fuselage running direction left or right transmission mechanism of the traveling device provided on the side closer to the steering unit 3 provided on one side. 走行装置1の左右車軸21、21への動力伝達を継脱する左右サイドクラッチ20を設け、前記左右サイドクラッチ20うちの切りにされた車軸21へ動力伝達する差動機構23を設け、該差動機構23の上手側の伝達経路には、該差動機構23が直進時の左右車軸21に前記左右サイドクラッチ20からの回転と同期して伝達する直進用クラッチ40と旋回時に前記左側または右側の旋回内側の車軸21に回転伝達する旋回用クラッチ51とを有する旋回用伝達装置33を設け、前記左右サイドクラッチ20を設けたサイドクラッチ軸14の中央にエンジンからの回転が伝達される受動歯車15と前記旋回用クラッチ51に回転伝達する旋回用中間歯車53を設け、該受動歯車15と旋回用中間歯車53は、前記旋回用伝達装置33を基準に、前記走行装置1の上方の機体走行方向左右何れか一側に設けた操縦部3に寄った側に設け、前記受動歯車15に噛合う直進用入力歯車37と前記旋回用中間歯車53に噛合う旋回用入力歯車52と差動機構23に回転伝達するケース回転出力歯車34は、旋回用中間軸35に夫々設けると共に、直進用入力歯車37と旋回用入力歯車52はケース回転出力歯車34に対して操縦部3より離れた側に設けた走行装置の伝動機構。 The left and right side clutches 20 for transferring power to the left and right axles 21 and 21 of the traveling device 1 are provided, and a differential mechanism 23 for transmitting power to the cut axles 21 of the left and right side clutches 20 is provided. In the transmission path on the upper side of the moving mechanism 23, the differential mechanism 23 transmits to the left and right axles 21 when traveling straight in synchronism with the rotation from the left and right side clutches 20 and the left or right side when turning. A turning transmission device 33 having a turning clutch 51 for transmitting the rotation to the axle 21 on the inner side of the turning, and a passive gear that transmits the rotation from the engine to the center of the side clutch shaft 14 provided with the left and right side clutches 20. 15 and a turning intermediate gear 53 that transmits the rotation to the turning clutch 51. The passive gear 15 and the turning intermediate gear 53 are based on the turning transmission device 33. , Provided on the side closer to the control unit 3 provided on either the left or right side of the aircraft traveling direction above the traveling device 1 and meshed with the straight input gear 37 and the turning intermediate gear 53 that mesh with the passive gear 15. The turning input gear 52 and the case rotation output gear 34 for transmitting the rotation to the differential mechanism 23 are provided on the turning intermediate shaft 35, respectively, and the linear input gear 37 and the turning input gear 52 are connected to the case rotation output gear 34, respectively. On the other hand, a transmission mechanism of the traveling device provided on the side away from the control unit 3. 走行装置1の左右車軸21、21への動力伝達を継脱する左右サイドクラッチ20を設け、前記左右サイドクラッチ20うちの切りにされた車軸21へ動力伝達する差動機構23を設け、該差動機構23の上手側の伝達経路には、該差動機構23が直進時の左右車軸21に前記左右サイドクラッチ20からの回転と同期して伝達する直進用クラッチ40と旋回時に前記左側または右側の旋回内側の車軸21に回転伝達する旋回用クラッチ51とを有する旋回用伝達装置33を設け、前記左右サイドクラッチ20を設けたサイドクラッチ軸14の中央にエンジンからの回転が伝達される受動歯車15と前記旋回用クラッチ51に回転伝達する旋回用中間歯車53を設け、該受動歯車15と旋回用中間歯車53は、前記旋回用伝達装置33を基準に、前記走行装置1の上方の機体走行方向左右何れか一側に設けた操縦部3に寄った側に設け、前記受動歯車15に噛合う直進用入力歯車37と前記旋回用中間歯車53に噛合う旋回用入力歯車52と差動機構23に回転伝達するケース回転出力歯車34は、旋回用中間軸35に夫々設け、直進用入力歯車37と旋回用入力歯車52はケース回転出力歯車34に対して操縦部3より離れた側に設けると共に、ケース回転出力歯車34および直進用入力歯車37に対して旋回用入力歯車52は最も操縦部3より離れた側に配置した走行装置の伝動機構。 The left and right side clutches 20 for transferring power to the left and right axles 21 and 21 of the traveling device 1 are provided, and the differential mechanism 23 for transmitting power to the cut axles 21 of the left and right side clutches 20 is provided. In the transmission path on the upper side of the moving mechanism 23, the differential mechanism 23 transmits to the left and right axles 21 when traveling straight in synchronism with the rotation from the left and right side clutches 20 and the left or right side when turning. A turning transmission device 33 having a turning clutch 51 for transmitting rotation to the axle 21 on the inner side of the turning, and a passive gear that transmits the rotation from the engine to the center of the side clutch shaft 14 provided with the left and right side clutches 20. 15 and a turning intermediate gear 53 that transmits the rotation to the turning clutch 51. The passive gear 15 and the turning intermediate gear 53 are based on the turning transmission device 33. , Provided on the side closer to the control unit 3 provided on either the left or right side of the aircraft traveling direction above the traveling device 1 and meshed with the straight input gear 37 and the turning intermediate gear 53 that mesh with the passive gear 15. The turning input gear 52 and the case rotation output gear 34 that transmits the rotation to the differential mechanism 23 are provided on the turning intermediate shaft 35, respectively. The linear input gear 37 and the turning input gear 52 are connected to the case rotation output gear 34. The traveling gear transmission mechanism is provided on the side farther from the control unit 3 and the turning input gear 52 is located farthest from the control unit 3 with respect to the case rotation output gear 34 and the linear input gear 37.
JP2003277049A 2003-07-18 2003-07-18 Transmission mechanism of traveling device Expired - Fee Related JP4336954B2 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008143261A (en) * 2006-12-07 2008-06-26 Mitsubishi Agricult Mach Co Ltd Working traveling vehicle
JP2010242894A (en) * 2009-04-07 2010-10-28 Gkn Driveline Japan Ltd Final reduction gear device
WO2014208117A1 (en) * 2013-06-28 2014-12-31 株式会社クボタ Transmission device for working machine, and harvester
JP2015054639A (en) * 2013-09-12 2015-03-23 株式会社クボタ Transmission device for working machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008143261A (en) * 2006-12-07 2008-06-26 Mitsubishi Agricult Mach Co Ltd Working traveling vehicle
JP2010242894A (en) * 2009-04-07 2010-10-28 Gkn Driveline Japan Ltd Final reduction gear device
WO2014208117A1 (en) * 2013-06-28 2014-12-31 株式会社クボタ Transmission device for working machine, and harvester
JP2015054639A (en) * 2013-09-12 2015-03-23 株式会社クボタ Transmission device for working machine

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