JPS6238440Y2 - - Google Patents

Description

【考案の詳細な説明】 この考案は、コンバインなどの動力車における
動力伝達機構、詳しくはミツシヨンケース内に軸
架した回転軸に、駆動側軸に連動連結する駆動側
輪体と、従動側軸に連動連結する従動側輪体とを
挿嵌し、この両輪体に互に咬合可能なクラツチ歯
を形成して、従動側輪体の回転軸上での移動によ
り、駆動側軸から従動側軸への動力伝達遮断を行
なうべく構成する一方、前記従動側輪体のミツシ
ヨンケース側静止部材への圧接により、従動側軸
の回転に対し制動を行なうべく構成した動力伝達
機構に関する。[Detailed explanation of the invention] This invention consists of a power transmission mechanism for a power vehicle such as a combine harvester, specifically, a rotating shaft mounted inside a transmission case, a driving-side wheel body interlockingly connected to the driving-side shaft, and a driven-side wheel body. A driven side wheel that is interlocked with the shaft is inserted, and clutch teeth that can engage with each other are formed on both wheels so that the driven side wheel moves from the driving side shaft to the driven side by moving the driven side wheel on the rotating shaft. The present invention relates to a power transmission mechanism configured to cut off power transmission to a shaft, and also configured to brake rotation of the driven shaft by press-contacting the driven wheel body to a stationary member on the transmission case side.

一般に動力車特にコンバインにあつては、刈取
脱穀作業時に条合わせ操向操作を行なうような場
合、前記動力伝達機構の従動側輪体を回転軸の中
立位置に位置させ、つまり該輪体を駆動側輪体の
クラツチ歯から離合させて、駆動側軸から従動側
軸への動力を遮断状態に保持し、かつ前記従動側
輪体をミツシヨンケース側静止部材に圧接させる
ことなく、所謂従動側軸に制動を与えることなく
操向を行なうのである。 Generally speaking, in the case of a power vehicle, especially a combine harvester, when performing a row alignment steering operation during reaping and threshing work, the driven side wheel of the power transmission mechanism is positioned at a neutral position of the rotating shaft, that is, the wheel is driven. The so-called driven side is separated from the clutch teeth of the side wheel body to maintain the power from the driving side shaft to the driven side shaft in a cutoff state, and without bringing the driven side wheel body into pressure contact with the stationary member on the transmission case side. Steering is performed without applying braking to the shaft.

しかして従来では、前記従動側輪体の回転軸上
での移動をフオーク部材を用いて手動操作により
行なつているのであるが、この手段によるときに
は、前記輪体を回転軸の中立位置に保持すること
ができ、コンバインの条合わせ操向操作に便利と
なる反面、前記輪体をミツシヨンケース側静止部
材に圧接させて、従動側軸の制動を行なうとき、
大きな操作荷重を必要として操作が重い欠陥があ
る。 Conventionally, however, the movement of the driven wheel on the rotating shaft is manually performed using a fork member, but when this means is used, the wheel is held at a neutral position on the rotating shaft. This is convenient for the row alignment and steering operation of the combine harvester, but when the wheel body is brought into pressure contact with the stationary member on the transmission case side and the driven side shaft is braked,
There is a defect that requires a large operating load and is difficult to operate.

そこで制動時の操作荷重を小ならしめるべく、
前記従動側輪体を油圧ピストン装置により移動自
在となし、該ピストン装置を制御弁により切換操
作することによつて、前記輪体の移動による制動
を行なうべくしているが、この手段では前記制御
弁を操作すると、ピストン装置が全ストローク移
動し、つまり従動側輪体が駆動側輪体に咬合した
動力伝達位置と、従動側輪体が静止部材側に圧接
された制動位置との２位置間で選択的に移動さ
れ、従動側輪体を前述した中立位置に位置させる
ことができないのであり、従つてコンバインの条
合わせ操向操作時に非常に不便であつた。 Therefore, in order to reduce the operating load during braking,
The driven wheel body is made movable by a hydraulic piston device, and the piston device is switched by a control valve to effect braking by movement of the wheel body. When the valve is operated, the piston device moves through its entire stroke, which means that it moves between two positions: a power transmission position where the driven wheel engages with the driving wheel, and a braking position where the driven wheel is pressed against the stationary member. This makes it impossible to position the driven wheel body in the neutral position described above, which is extremely inconvenient when steering the combine harvester to align the rows.

本考案は以上のごとき問題に鑑みて考案したも
ので、制動時の操作荷重を小ならしめることがで
き、しかも従動側輪体を回転軸の中立位置に保持
できて、コンバインの条合わせ操向操作を簡単に
行ない得る動力伝達機構を提供せんとするもので
ある。 This invention was devised in view of the above problems, and it is possible to reduce the operating load during braking, and also to maintain the driven side wheel in the neutral position of the rotation axis, thereby improving the row alignment steering of the combine harvester. It is an object of the present invention to provide a power transmission mechanism that can be easily operated.

さらに詳しくは、前記駆動側輪体の内周に円筒
状部材を設けて前記回転軸に挿嵌すると共に、前
記回転軸に前記円筒状部材の内周面に密接するフ
ランジを一体に設けて、前記円筒状部材の内周面
と前記回転軸の外周面と前記フランジとによつて
区画される１対のシリンダー室を設け、これらシ
リンダー室に、前記従動側輪体を軸方向移動させ
るピストンをそれぞれ介装して、ピストン装置を
形成する一方、前記従動側輪体にフオーク部材を
係合させて、前記従動側輪体の移動をフオーク部
材とピストン装置とにより行なうべく構成すると
共に、このフオーク部材及びピストン装置の制御
弁を操作レバーに連結し、かつこの操作レバーに
よる制御弁の操作に操作遅れを与えたことを特徴
とするものである。 More specifically, a cylindrical member is provided on the inner periphery of the drive side wheel body and is inserted into the rotating shaft, and a flange that is in close contact with the inner peripheral surface of the cylindrical member is integrally provided on the rotating shaft, A pair of cylinder chambers defined by the inner circumferential surface of the cylindrical member, the outer circumferential surface of the rotary shaft, and the flange are provided, and a piston for moving the driven wheel body in the axial direction is provided in these cylinder chambers. They are respectively interposed to form a piston device, and a fork member is engaged with the driven wheel body to move the driven wheel body by the fork member and the piston device. The control valve of the member and the piston device is connected to an operating lever, and an operation delay is applied to the operation of the control valve by the operating lever.

以下本考案を図面の実施例によつて説明する。 The present invention will be explained below with reference to embodiments shown in the drawings.

第１図は動力車の一例としてコンバインを示
し、該図において附号１で全体的に示されるコン
バインは、機体２の下部両側に走行用のクローラ
３，３′を設けると共に、この両クローラ３，
３′を駆動する左右駆動輪４，４′を前記機体２上
に搭載した原動機（図示せず）に連動連結し、且
つこの機体２の前方部に設けた刈取部５及び上方
部に設けた脱穀部６を夫々前記原動機に連動連結
し、この原動機の稼動により前記両クローラ３，
３′を各駆動輪４，４′を介して駆動し、機体２を
走行させると共に、前記刈取部５及び脱穀部６を
駆動して穀稈の刈取、脱穀を行なうべく構成され
ている。 FIG. 1 shows a combine harvester as an example of a power vehicle, and the combine harvester, which is generally indicated by number 1 in the figure, has crawlers 3, 3' for running on both sides of the lower part of the machine body 2, and both crawlers 3 ，
Left and right drive wheels 4, 4' driving the main body 3' are interlocked and connected to a prime mover (not shown) mounted on the machine body 2, and a reaping part 5 provided at the front part of the machine body 2 and a reaping part 5 provided at the upper part The threshing sections 6 are interlocked and connected to the prime movers, and the operation of the prime movers causes the crawlers 3,
3' is driven through each drive wheel 4, 4' to make the machine body 2 travel, and at the same time drive the reaping section 5 and threshing section 6 to reap and thresh grain culms.

前記両駆動輪４，４′の前記原動機からの動力
伝達機構は、第２及び第３図に示すごとく構成す
るのであつて、以下この伝動機構について説明す
る。 A power transmission mechanism from the prime mover to the driving wheels 4, 4' is constructed as shown in FIGS. 2 and 3, and this transmission mechanism will be explained below.

前記機体２の適所に装備されたミツシヨンケー
ス１１に、前記原動機に連動連結する駆動側軸１
２、後記する回転軸１３、前記両駆動輪４，４′
に連動する従動側軸１４，１４′並びにこの各軸
１４，１４′に固挿した歯車１５，１５′と咬合す
る歯車１７，１７′、後記する従動側輪体３０，
３０′のギヤー歯３０ａ，３０′ａと咬合する歯車
１８，１８′をもつた中間軸１６を夫々軸架し、
且つ前記駆動側軸１２に対応する前記ミツシヨン
ケース１１の外壁にポンプ装置１９を固設する。
このポンプ装置１９は前記ミツシヨンケース１１
の外壁にポンプギヤー２１をもつポンプ本体２０
を固設すると共に、該ポンプ本体２０にその開口
側部を閉鎖すべく別のポンプギヤー２３をもつポ
ンプ本体２２を固設し、該ポンプ本体２２の開口
側部を端板２４により閉鎖し、且つ前記両ポンプ
ギヤー２１，２３を夫々１本のポンプ軸２５によ
り駆動すべく構成して成るもので、このポンプ軸
２５を前記駆動側軸１２にカツプリング２６を介
して連結するのである。一方前記ミツシヨンケー
ス１１の両側壁に固設した蓋体２７，２７′内に
軸受２８，２８′を内装して該軸受２８，２８′に
より回転軸１３を回転自在に軸架し、且つこの回
転軸１３にギヤー歯２９ａをもつ駆動側輪体２９
を固挿し、該輪体２９を前記ポンプ装置１９のポ
ンプ本体２０側から吐出される圧油によつて作動
せしめられる油圧クラツチ付変速装置Ａを介して
前記駆動側軸１２に連動連結させると共に、この
輪体２９を挟んで前記回転軸１３に２個従動側輪
体３０，３０′を回転並びに軸方向移動自在に挿
嵌し、この両輪体３０，３０′の外周に前記歯車
１８，１８′に咬合するギヤー歯３０ａ，３０′ａ
を形成してこの両輪体３０，３０′を前記両駆動
輪４，４′に連動連結し、且つ前記駆動側輪体２
９の両側にクラツチ歯２９ｂ，２９′ｂを形成す
る一方、前記従動側輪体３０，３０′には、前記
両クラツチ歯２９ｂ，２９′ｂに咬合するクラツ
チ歯３０ｂ，３０′ｂを形成している。 A drive-side shaft 1 interlocked and connected to the prime mover is attached to a transmission case 11 installed at a proper location on the aircraft body 2.
2. The rotating shaft 13, which will be described later, and both drive wheels 4, 4'
Driven side shafts 14, 14' interlocked with the shafts 14, 14', gears 17, 17' meshing with the gears 15, 15' fixedly inserted into the respective shafts 14, 14', and the driven side wheels 30, which will be described later.
Intermediate shafts 16 having gears 18, 18' meshing with gear teeth 30a, 30'a of 30' are respectively mounted,
Further, a pump device 19 is fixedly installed on the outer wall of the transmission case 11 corresponding to the drive side shaft 12.
This pump device 19 is connected to the mission case 11.
A pump body 20 with a pump gear 21 on the outer wall of the pump body 20
A pump main body 22 having another pump gear 23 is fixed to the pump main body 20 to close the open side thereof, and the open side of the pump main body 22 is closed by an end plate 24, and The pump gears 21 and 23 are each driven by a single pump shaft 25, and the pump shaft 25 is connected to the drive shaft 12 via a coupling 26. On the other hand, bearings 28, 28' are installed inside lids 27, 27' fixed to both side walls of the mission case 11, and the rotary shaft 13 is rotatably supported by the bearings 28, 28'. A drive side wheel body 29 having gear teeth 29a on the rotating shaft 13
is firmly inserted, and the wheel body 29 is interlocked and connected to the drive side shaft 12 via a transmission A with a hydraulic clutch operated by pressure oil discharged from the pump body 20 side of the pump device 19, Two driven side wheels 30, 30' are inserted into the rotating shaft 13 with the wheel 29 in between so as to be rotatable and movable in the axial direction, and the gears 18, 18' are attached to the outer peripheries of the two wheels 30, 30'. Gear teeth 30a, 30'a that engage with
The two wheel bodies 30, 30' are interlocked and connected to the two drive wheels 4, 4', and the drive side wheel bodies 2
Clutch teeth 29b, 29'b are formed on both sides of the wheel body 9, while clutch teeth 30b, 30'b are formed on the driven side wheels 30, 30' to engage with both the clutch teeth 29b, 29'b. ing.

また前記両蓋体２７，２７′から各従動側輪体
３０，３０′側に向けて、筒状部２７ａ，２７′ａ
を延出形成すると共に、この各輪体３０，３０′
から前記筒状部２７ａ，２７′ａ内へと夫々延び
る筒状部３０ｃ，３０′ｃを形成し、この蓋体側
筒状部２７ａ，２７′ａに夫々複数本のスリツト
２７ｂ，２７′ｂを形成し、輪体側筒状部３０
ｃ，３０′ｃの外周にスプライン溝３０ｄ，３
０′ｄを形成し、夫々の筒状部２７ａ，３０ｃ及
び２７′ａ，３０′ｃ間に、前記スリツト２７ｂ，
２７′ｂに係合して前記蓋体２７，２７′に係止さ
れる複数枚のリング状摩擦板３１…，３１′…
と、前記スプライン溝３０ｄ，３０′ｄにスプラ
イン嵌合して前記輪体３０，３０′と共に回転す
る複数枚のリング状摩擦板３２…，３２′…とを
交互に介装位置させ、前記各輪体３０，３０′を
蓋体２７，２７′の固定壁２７ｃ，２７′ｃに各摩
擦板３１…，３１′…及び３２…，３２′…を介し
て圧接させることにより、前記各輪体３０，３
０′つまり前記従動側軸１４，１４′の回転を制動
させるべくしている。 Further, cylindrical portions 27a, 27'a are formed from the lids 27, 27' toward the driven wheels 30, 30'.
are formed to extend, and each wheel body 30, 30'
A plurality of slits 27b, 27'b are formed in the lid side cylindrical parts 27a, 27'a, respectively. The ring body side cylindrical part 30
spline grooves 30d, 3 on the outer periphery of c, 30'c
0'd, and between the respective cylindrical parts 27a, 30c and 27'a, 30'c, the slits 27b,
27'b and a plurality of ring-shaped friction plates 31..., 31'... which are locked to the lids 27, 27'.
and a plurality of ring-shaped friction plates 32..., 32'... which are spline-fitted into the spline grooves 30d, 30'd and rotate together with the wheels 30, 30' are interposed alternately, By bringing the wheels 30, 30' into pressure contact with the fixed walls 27c, 27'c of the lids 27, 27' via the respective friction plates 31..., 31'... and 32..., 32'... 30,3
0', that is, the rotation of the driven shafts 14, 14' is to be braked.

しかして本考案は以上のごとき動力伝達機構に
おいて、第３図に詳しく示すごとく、前記駆動側
輪体２９と従動側輪体３０，３０′との間にピス
トン装置３３，３３′を介装させ、該各ピストン
装置３３，３３′により前記従動側輪体３０，３
０′を移動させるべくなすと共に、この従動側輪
体３０，３０′の外周面に周溝３０ｅ，３０′ｅを
設け、該各周溝３０ｅ，３０′ｅにフオーク部材
３４，３４′を取付け、この各フオーク部材３
４，３４′によつても従動側輪体３０，３０′を移
動可能となすのである。 Therefore, in the power transmission mechanism as described above, the present invention has a piston device 33, 33' interposed between the driving side wheel body 29 and the driven side wheel body 30, 30', as shown in detail in FIG. , the driven side wheels 30, 3 by the respective piston devices 33, 33'.
At the same time, circumferential grooves 30e, 30'e are provided on the outer circumferential surface of the driven side wheels 30, 30', and fork members 34, 34' are attached to each of the circumferential grooves 30e, 30'e. , each fork member 3
4 and 34' also allow the driven wheels 30 and 30' to move.

前記ピストン装置３３，３３′は、駆動側輪体
２９の内周面と回転軸１３の外周面との間に、シ
リンダ室３３ａ，３３′ａを形成し、この各シリ
ンダ室３３ａ，３３′ａ内にそれぞれピストン３
３ｂ，３３′ｂを介装させて構成するのであり、
前記各シリンダ室３３ａ，３３′ａを前記ポンプ
装置１９にそれぞれ制御弁３５を介して連通さ
せ、該各制御弁３５の切換操作をして前記シリン
ダ室３３ａ，３３′ａに圧油を供給することによ
り、ピストン３３ｂ，３３′ｂを介して従動側輪
体３０，３０′を移動させるべくなす。 The piston devices 33, 33' form cylinder chambers 33a, 33'a between the inner circumferential surface of the driving side wheel body 29 and the outer circumferential surface of the rotating shaft 13, and each of the cylinder chambers 33a, 33'a 3 pistons inside each
3b and 33'b are interposed,
Each of the cylinder chambers 33a, 33'a is communicated with the pump device 19 through a control valve 35, and the control valves 35 are switched to supply pressure oil to the cylinder chambers 33a, 33'a. This allows the driven wheels 30, 30' to be moved via the pistons 33b, 33'b.

また前記フオーク部材３４，３４′は、第４図
に示すごとく、リンク部材３６及び操作ワイヤ３
７を介してコンバイン操縦部に設ける各操作レバ
ー３８に連結し、該各レバー３８により各フオー
ク部材３４，３４′つまり各従動側輪体３０，３
０′を移動させるべくなす一方、この各レバー３
８を前記各制御弁３５の切換アーム３９に操作ワ
イヤ４０を介して連結し、該レバー３８によるフ
オーク部材３４，３４′の操作に対して、制御弁
３５の操作にタイムラグつまり時間的遅れを与え
るべくしたのである。 Further, the fork members 34, 34' include a link member 36 and an operating wire 3, as shown in FIG.
7 to each operating lever 38 provided in the combine operating section, and each lever 38 controls each fork member 34, 34', that is, each driven side wheel body 30, 3.
0', while each lever 3
8 is connected to the switching arm 39 of each of the control valves 35 via an operating wire 40 to provide a time lag in the operation of the control valve 35 with respect to the operation of the fork members 34, 34' by the lever 38. I decided to do so.

具体的には、前記レバー３８の操作に伴ないフ
オーク部材３４，３４′を介して従動側輪体３
０，３０′が、駆動側輪体２９から動力遮断位置
に移動されるまでは、前記制御弁３５の切換アー
ム３９を作動させることのない遊びをもつ３角形
状の連結杆４１を、前記操作レバー３８に取付
け、この連結杆４１に前記操作ワイヤ４０を連結
するのであり、即ち操作レバー３８の初期操作時
には、フオーク部材３４，３４′により従動側輪
体３０，３０′を動力遮断位置に移動させ、前記
レバー３８をさらに操作することにより、前記切
換アーム３９を介して制御弁３５を操作し、前記
輪体３０，３０′をピストン装置３３，３３′を介
して制動位置に移動させるべくしたのである。 Specifically, as the lever 38 is operated, the driven side wheel body 3 is moved through the fork members 34, 34'.
0, 30' is moved from the drive side wheel body 29 to the power cutoff position, the triangular connecting rod 41 with a play that does not operate the switching arm 39 of the control valve 35 is operated. It is attached to the lever 38, and the operating wire 40 is connected to this connecting rod 41. That is, when the operating lever 38 is initially operated, the driven side wheels 30, 30' are moved to the power cutoff position by the fork members 34, 34'. By further operating the lever 38, the control valve 35 is operated via the switching arm 39, and the wheel bodies 30, 30' are moved to the braking position via the piston devices 33, 33'. It is.

図中４２，４２′は前記従動側輪体３０，３
０′の押戻し用ばねである。 In the figure, 42, 42' are the driven wheels 30, 3.
0' push-back spring.

本考案の動力伝達機構は以上のごとく構成する
もので、原動機に連動連結する駆動側軸１２から
の動力はポンプ装置１９の軸２５に伝達され、該
ポンプ装置１９を駆動せしめると共に、このポン
プ装置１９からの圧油によつて動作される油圧ク
ラツチ付変速装置Ａを介して駆動側輪体２９に伝
達され、該輪体２９から両従動側輪体３０，３
０′、歯車１８，１８′、歯車１７，１７′、歯車
１５，１５′を介して各駆動輪４，４′の従動側軸
１４，１４′に伝達され、この各駆動輪４，４′に
より両側のクローラ３，３′を駆動して機体２を
走行させる。 The power transmission mechanism of the present invention is constructed as described above, and the power from the drive shaft 12 interlocked with the prime mover is transmitted to the shaft 25 of the pump device 19 to drive the pump device 19, and also to drive the pump device 19. The transmission is transmitted to the drive side wheel body 29 through the transmission A with a hydraulic clutch operated by pressure oil from the wheel body 29, and from the wheel body 29 to both driven side wheel bodies 30, 3.
0', gears 18, 18', gears 17, 17', and gears 15, 15' to the driven shafts 14, 14' of each drive wheel 4, 4'. The crawlers 3, 3' on both sides are driven to make the aircraft 2 travel.

しかして機体２を旋回させるときには、何れか
一方の操作レバー３８を揺動操作して行なうので
あり、このレバー３８の初期操作時には操作ワイ
ヤ３７及びリンク部材３６によるフオーク部材３
４，３４′の移動操作により、従動側輪体３０，
３０′が回転軸１３に沿つて外側方へ移動され、
該各輪体３０，３０′のクラツチ歯３０ｂ，３
０′が駆動側輪体２９のクラツチ歯２９ｂ，２
９′ｂから離合され、この駆動側輪体２９から従
動側輪体３０，３０′への動力伝達、つまり原動
機から駆動輪４，４′への動力伝達が遮断され
る。 Therefore, when the aircraft body 2 is turned, it is done by swinging one of the operating levers 38, and when the lever 38 is initially operated, the fork member 3 is connected to the operating wire 37 and the link member 36.
4, 34', the driven side wheels 30,
30' is moved outwardly along the rotation axis 13,
Clutch teeth 30b, 3 of each wheel 30, 30'
0' is the clutch tooth 29b, 2 of the drive side wheel body 29.
9'b, and power transmission from the drive side wheel body 29 to the driven side wheel bodies 30, 30', that is, power transmission from the prime mover to the drive wheels 4, 4' is cut off.

さらに前記レバー３８の揺動操作を継続する
と、操作ワイヤ４０を介して制御弁３５の切換ア
ーム３９が作動され、ピストン装置３３，３３′
のシリンダ室３３ａ，３３′ａに前記ポンプ室１
９から圧油が供給されて、ピストン３３ｂ，３
３′ｂを外側方へ進出させ、これに伴ない前記従
動側輪体３０，３０′を押動して、該各輪体３
０，３０′を摩擦板３１…，３２…を介してミツ
シヨンケース１１の固定壁２７ｃ，２７′ｃに押
付け、この輪体３０，３０′に制動力を与えて、
駆動輪４，４′の回転を停止させる。 Further, when the swinging operation of the lever 38 is continued, the switching arm 39 of the control valve 35 is operated via the operation wire 40, and the piston devices 33, 33'
The pump chamber 1 is placed in the cylinder chambers 33a, 33'a of
Pressure oil is supplied from 9, and the pistons 33b, 3
3'b to the outside, and in conjunction with this, the driven side wheels 30, 30' are pushed, and each of the wheels 3'
0, 30' are pressed against the fixed walls 27c, 27'c of the transmission case 11 via the friction plates 31..., 32..., and a braking force is applied to the wheels 30, 30'.
The rotation of the drive wheels 4, 4' is stopped.

またコンバインの刈取脱穀作業時に、条合わせ
操向操作を行なうような場合には、前記レバー３
８を中立位置に揺動操作するのであり、つまり前
述したごとく従動側輪体３０，３０′のクラツチ
歯３０ｂ，３０′ｂが駆動側輪体２９のクラツチ
歯２９ｂ，２９′ｂから離合されて動力伝達が遮
断され、かつ従動側輪体３０，３０′をミツシヨ
ンケース１１の固定壁２７ｃ，２７′ｃに圧接さ
せることなく、所謂制動を行なうことなく条合せ
操向操作を行なうのである。 In addition, when performing row alignment steering operation during reaping and threshing work of the combine, the lever 3
8 to the neutral position, that is, as mentioned above, the clutch teeth 30b, 30'b of the driven wheels 30, 30' are separated from the clutch teeth 29b, 29'b of the driving wheels 29. The power transmission is cut off, and the steering operation is performed without pressing the driven wheels 30, 30' against the fixed walls 27c, 27'c of the transmission case 11, and without performing so-called braking.

以上説明したごとく本考案の動力伝達機構で
は、駆動側輪体の内周に円筒状部材を設けて前記
回転軸に挿嵌すると共に、前記回転軸に前記円筒
状部材の内周面に密接するフランジを一体に設け
て、前記円筒状部材の内周面と前記回転軸の外周
面と前記フランジとによつて区画される１対のシ
リンダー室を設け、これらシリンダー室に、前記
従動側輪体を軸方向移動させるピスンをそれぞれ
介装して、ピストン装置を形成する一方、前記従
動側輪体にフオーク部材を係合させて、従動側輪
体の移動をフオーク部材とピストン装置とにより
行なうべく構成すると共に、このピストン装置の
制御弁とフオーク部材とを操作レバーに連結し、
かつ該レバーによりフオーク部材の操作に対して
前記制御弁の操作に操作遅れを与えるべくしたか
ら、前記回転軸及び駆動側輪体の内周側を利用し
てミツシヨンケースを大きくすることなくピスト
ン装置をコンパクトに組込むことができ、しか
も、従動側輪体の軸方向移動をピストン装置とフ
オーク部材とによつて可能としているから、操作
荷重の大きい従動側輪体の制動操作を、ピストン
装置を駆動させることによつて簡単に行なえる
し、又フオーク部材の操作によつて駆動側輪体か
ら従動側輪体への動力伝達を遮断することができ
るのである。 As explained above, in the power transmission mechanism of the present invention, a cylindrical member is provided on the inner periphery of the drive side wheel body, and is inserted into the rotating shaft, and the cylindrical member is attached to the rotating shaft in close contact with the inner peripheral surface of the cylindrical member. A pair of cylinder chambers are provided which are integrally provided with a flange and partitioned by the inner circumferential surface of the cylindrical member, the outer circumferential surface of the rotary shaft, and the flange, and the driven side wheel body is disposed in these cylinder chambers. A piston device is formed by interposing pistons for moving the wheels in the axial direction, and a fork member is engaged with the driven wheel body, so that the movement of the driven wheel body is performed by the fork member and the piston device. and connecting the control valve and fork member of the piston device to the operating lever,
In addition, since the lever is designed to provide a delay in the operation of the control valve with respect to the operation of the fork member, the inner peripheral side of the rotating shaft and the drive side wheel body can be used to prevent the piston from increasing in size without increasing the size of the transmission case. The device can be incorporated compactly, and since the axial movement of the driven wheel body is possible using the piston device and the fork member, the braking operation of the driven side wheel body, which has a large operating load, can be performed without using the piston device. This can be easily done by driving, and power transmission from the driving wheel to the driven wheel can be cut off by operating the fork member.

更にコンバインの条合わせ操向操作時に操作レ
バーを中立位置に保持することにより、ピストン
装置を作動させることなく、フオーク部材を作動
させて、従動側輪体への動力伝達を遮断し、かつ
該輪体に制動力を与えることなく中立状態に保持
できるものであり、従つて、前記条合わせ作業を
簡単に行なうことができ、しかも前記輪体をミツ
シヨンケースの静止部材に強く押付けて制動を行
なうときには、前記ピストン装置により行なうた
め制動時の操作荷重を小ならしめ得るのである。 Furthermore, by holding the operating lever in the neutral position during the row alignment steering operation of the combine, the fork member is operated without operating the piston device, cutting off power transmission to the driven wheel body, and It can be maintained in a neutral state without applying braking force to the body, and therefore, the above-mentioned row alignment work can be easily performed, and moreover, the above-mentioned wheel body can be strongly pressed against the stationary member of the transmission case to perform braking. In some cases, since the piston device is used, the operating load during braking can be reduced.

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

第１図は本考案の動力伝達機構を備えた動力車
の一例として示すコンバインの側面図、第２図は
同伝達機構の縦断面図、第３図はその要部の拡大
断面図、第４図は前記伝達機構の操作部を示す図
面である。 １１……ミツシヨンケース、１２……駆動側
軸、１３……回転軸、１４……従動側軸、２９…
…駆動側輪体、２９ｂ，２９′ｂ……クラツチ
歯、３０，３０′……従動側輪体、３０ｂ，３
０′ｂ……クラツチ歯、３３，３３′……ピストン
装置、３４，３４′……フオーク部材、３５……
制御弁、３８……操作レバー。 FIG. 1 is a side view of a combine harvester as an example of a power vehicle equipped with the power transmission mechanism of the present invention, FIG. The figure is a diagram showing an operating section of the transmission mechanism. 11... Mission case, 12... Driving side shaft, 13... Rotating shaft, 14... Driven side shaft, 29...
...Drive side wheel body, 29b, 29'b...Clutch teeth, 30,30'...Driven side wheel body, 30b, 3
0'b...Clutch tooth, 33, 33'...Piston device, 34, 34'...Fork member, 35...
Control valve, 38... operation lever.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ミツシヨンケース内に軸架した回転軸に、駆動
側軸に連動連結する駆動側輪体と、従動側軸に連
動連結する従動側輪体とを挿嵌し、この両輪体に
互いに咬合可能なクラツチ歯を形成して、従動側
輪体の回転軸上での移動により駆動側軸から従動
側軸への動力の伝達遮断を行なうべく構成する一
方、前記従動側輪体のミツシヨンケース側静止部
材への圧接により、従動側軸の回転に対し制動を
行なうべく構成した動力伝達機構において、前記
駆動側輪体の内周に円筒状部材を設けて前記回転
軸に挿嵌すると共に、前記回転軸に前記円筒状部
材の内周面に密接するフランジを一体に設けて、
前記円筒状部材の内周面と前記回転軸の外周面と
前記フランジとによつて区画される１対のシリン
ダー室を設け、これらシリンダー室に、前記従動
側輪体を軸方向移動させるピストンをそれぞれ介
装して、ピストン装置を形成する一方、前記従動
側輪体にフオーク部材を係合させて、従動側輪体
の移動をフオーク部材とピストン装置とにより行
なうべく構成すると共に、このフオーク部材及び
ピストン装置の制御弁を操作レバーに連結し、か
つこの操作レバーによる制御弁の操作に操作遅れ
を与えたことを特徴とする動力車における動力伝
達機構。 A driving side wheel that is interlocked and connected to the driving side shaft and a driven side wheel that is interlocked and connected to the driven side shaft are inserted into the rotating shaft that is mounted inside the transmission case, and these two wheels can be engaged with each other. Clutch teeth are formed to cut off the transmission of power from the drive side shaft to the driven side shaft by movement of the driven side wheel body on the rotating shaft, while the transmission case side of the driven side wheel body is stationary. In a power transmission mechanism configured to brake the rotation of a driven side shaft by press contact with a member, a cylindrical member is provided on the inner periphery of the drive side wheel body and is inserted into the rotation shaft, and the rotation is A flange is integrally provided on the shaft and comes into close contact with the inner circumferential surface of the cylindrical member,
A pair of cylinder chambers defined by the inner circumferential surface of the cylindrical member, the outer circumferential surface of the rotary shaft, and the flange are provided, and a piston for moving the driven wheel body in the axial direction is provided in these cylinder chambers. They are respectively interposed to form a piston device, and a fork member is engaged with the driven wheel body to move the driven wheel body by the fork member and the piston device, and the fork member and a power transmission mechanism for a power vehicle, characterized in that a control valve of a piston device is connected to an operating lever, and an operation delay is given to the operation of the control valve by the operating lever.