JP2556782B2 - Turning mechanism in front-wheel steering vehicle - Google Patents
Turning mechanism in front-wheel steering vehicleInfo
- Publication number
- JP2556782B2 JP2556782B2 JP3242095A JP24209591A JP2556782B2 JP 2556782 B2 JP2556782 B2 JP 2556782B2 JP 3242095 A JP3242095 A JP 3242095A JP 24209591 A JP24209591 A JP 24209591A JP 2556782 B2 JP2556782 B2 JP 2556782B2
- Authority
- JP
- Japan
- Prior art keywords
- speed
- wheel
- bevel gear
- front wheel
- brake
- 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.)
- Expired - Lifetime
Links
- 230000007246 mechanism Effects 0.000 title claims description 64
- 230000005540 biological transmission Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
Landscapes
- Arrangement And Driving Of Transmission Devices (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、前輪舵取り車両におけ
る旋回機構に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turning mechanism in a front wheel steering vehicle.
【０００２】[0002]
【従来の技術】従来より、トラクター等の圃場内での作
業性の向上、特に旋回時の旋回半径を小さくすることを
目的として、各種形態の前輪舵取り車両における旋回機
構が開発されている。そして、かかる旋回機構は、一般
に、四輪操舵式のものと前輪内外輪作動駆動式( 倍速タ
ーン式) とに大別される。2. Description of the Related Art Conventionally, various types of turning mechanisms for front-wheel steering vehicles have been developed for the purpose of improving workability in a field such as a tractor, and particularly reducing the turning radius at the time of turning. The turning mechanism is generally classified into a four-wheel steering type and a front wheel inner / outer wheel actuated drive type (double speed turn type).
【０００３】[0003]
【発明が解決しようとする問題点】しかし、従来の四輪
操舵式のものは、一般に構造が複雑であるため製作コス
トが高くなるという問題点があり、一方、前輪内外輪作
動駆動式は、圃場が硬い場合は、スリップしたり、ま
た、差動機構がミッション内に内蔵されているため、余
計な伝動軸を必要として煩雑な構造となり、同様に製作
コストが高くなるとともに、メンテナンスも煩わしいも
のとなっていた。However, the conventional four-wheel steering type has a problem that the manufacturing cost is high because the structure is generally complicated, while the front-wheel inner / outer-wheel actuated type has a problem. If the field is hard, it slips, and since the differential mechanism is built into the mission, an extra transmission shaft is required, resulting in a complicated structure. Similarly, the manufacturing cost is high and maintenance is troublesome. It was.
【０００４】本発明は、上記問題点を解決することがで
きる前輪舵取り車両における旋回機構を提供することを
目的とする。An object of the present invention is to provide a turning mechanism in a front wheel steering vehicle which can solve the above problems.
【０００５】[0005]
【課題を解決するための手段】本発明は、前輪デフ装置
に連動連結し、かつ、操向操作自在な前輪へ動力を伝達
する前輪駆動系路に、後輪駆動速度と略等しい駆動速度
で伝動する標準駆動状態と、後輪駆動速度より大きい駆
動速度で伝動する増速駆動状態とに切換可能とした前輪
舵取り車両において、前輪駆動系路中に、ブレーキに連
動連結するベベルギヤと、デフケースに連結したベベル
ギヤと、前輪デフ装置側に連動したベベルギヤにより構
成した増速用デフ機構を設けると共に、同増速用デフ機
構と、同増速用デフ機構の一方のベベルギヤを減速乃至
停止状態にして、前輪駆動側のベベルギヤを増速させる
ブレーキと、操舵機構側の一定切り角以上の旋回操作に
応じて標準駆動状態を解除できる切換クラッチとを設け
て増速切換機構を構成し、しかも、増速用デフ機構と、
ブレーキと、切換クラッチを直線状に配設したこと、及
び、上記増速切換機構と操舵機構を連動連結すると共
に、同増速切換機構に設けるブレーキは、操舵機構側の
一定切り角以上の旋回操作量に比例して、ブレーキを構
成する摩擦用多板への押圧力を徐々に増加し、徐々に減
速機能を生起すべく構成したことを特徴とする前輪舵取
り車両における旋回機構を提供せんとするものである。SUMMARY OF THE INVENTION According to the present invention, a front wheel drive system which is interlockingly connected to a front wheel diff device and which transmits power to a front wheel which can be steered at a drive speed substantially equal to a rear wheel drive speed. In a front-wheel steering vehicle that can be switched between a standard drive state in which power is transmitted and a speed-increasing drive state in which power is transmitted at a drive speed that is higher than the rear wheel drive speed, a bevel gear linked to a brake and a diff A speed increasing diff mechanism composed of a connected bevel gear and a bevel gear linked to the front wheel diff device side is provided, and the speed increasing diff mechanism and one bevel gear of the speed increasing diff mechanism are decelerated or stopped. , A brake that accelerates the bevel gear on the front-wheel drive side, and a switching clutch that can release the standard drive state in response to a turning operation over a certain turning angle on the steering mechanism side. Form, moreover, a differential mechanism for increased speed,
The brake and the switching clutch are linearly arranged, and the speed increase switching mechanism and the steering mechanism are interlockingly connected, and the brake provided in the speed increasing switching mechanism has a turning angle of a certain turning angle or more on the steering mechanism side. To provide a turning mechanism in a front-wheel steering vehicle, characterized in that it is configured to gradually increase the pressing force on the friction multiple plates constituting the brake in proportion to the operation amount, and gradually generate a deceleration function. To do.
【０００６】[0006]
【作用】操舵機構側を直進状態にして、前輪駆動系路を
後輪駆動速度と略等しい標準駆動状態とする場合は、増
速切換機構のブレーキが解除されており、動力がデフケ
ースやベベルギヤにて構成する増速用デフ機構に伝達さ
れ、さらに、接続状態の切換クラッチを介して前輪デフ
装置へ伝達される。そして、前輪は後輪と略等速状態で
回動する。[Function] When the steering mechanism side is in the straight running state and the front wheel drive system path is in the standard drive state substantially equal to the rear wheel drive speed, the brake of the speed increasing switching mechanism is released and the power is transmitted to the differential case or the bevel gear. To the front wheel diff device via the switching clutch in the connected state. Then, the front wheels rotate at substantially the same speed as the rear wheels.
【０００７】また、操舵機構側を一定切り角以上に旋回
操作して機体を旋回させながら前輪駆動系路を増速駆動
状態とする場合は、操舵機構の旋回操作に連動して切換
クラッチが切り状態となると共に、ブレーキが作動し、
同ブレーキに連動連結するベベルギヤが減速乃至停止状
態となり、この状態のときに増速用デフ機構に動力が伝
達されると、前輪デフ装置側に連動したベベルギヤが増
速され、これにより前輪デフ装置及び前輪が増速状態で
回動する。したがって、機体は円滑に小旋回を行うこと
ができるものである。Further, when the front wheel drive system road is set to the speed increasing drive state while turning the body by turning the steering mechanism side over a certain turning angle, the switching clutch is disengaged in conjunction with the turning operation of the steering mechanism. As soon as it becomes a state, the brake operates,
When the bevel gear linked to the brake is decelerated or stopped, and when power is transmitted to the speed increasing diff mechanism in this state, the bevel gear linked to the front wheel diff device side is accelerated, which causes the front wheel diff device to move. Also, the front wheels rotate in an accelerated state. Therefore, the airframe can smoothly make a small turn.
【０００８】[0008]
【実施例】以下、添付図に示す実施例に基づいて、本発
明を具体的に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings.
【０００９】図１において、Ａはトラクターであり、同
トラクターＡは、その前後部に、それぞれ、前輪１と後
輪２とを取付けており、かかる前輪１及び後輪２は、と
もに、以下に説明する駆動機構によって駆動される。In FIG. 1, A is a tractor, and the tractor A has a front wheel 1 and a rear wheel 2 attached to the front and rear portions thereof, respectively. It is driven by the drive mechanism described.
【００１０】即ち、図２に示す駆動系統図において、３
はエンジン、４は主クラッチ、５は主変速装置、６は副
変速装置、７は後輪デフ装置であり、同デフ装置７のデ
フヨーク軸８は最終減速装置９を介して各後輪２に連動
連結される。なお、10は各デフヨーク軸８の外端部に設
けられた後輪ブレーキである。That is, in the drive system diagram shown in FIG.
Is an engine, 4 is a main clutch, 5 is a main transmission, 6 is an auxiliary transmission, and 7 is a rear wheel differential device. A differential yoke shaft 8 of the differential device 7 is connected to each rear wheel 2 via a final reduction gear device 9. Interlocked and linked. Reference numeral 10 is a rear wheel brake provided on the outer end of each differential yoke shaft 8.
【００１１】なお、上記構成において、主変速装置５、
副変速装置６は、ミッションケース内に内蔵されてい
る。In the above structure, the main transmission 5,
The sub transmission 6 is built in the mission case.
【００１２】また、11は前輪駆動系路を示し、同前輪駆
動系路11は、副変速装置６に歯車列12及び自在継手13を
介して連結した前輪駆動軸14と、同前輪駆動軸14と連結
した前輪デフ装置15とからなり、同前輪デフ装置15の各
デフヨーク軸16は、歯車列17を介して前輪１に連結さ
れ、また、前輪１は、キングピン廻りに操向動作可能と
なっている。Reference numeral 11 denotes a front wheel drive system path. The front wheel drive system path 11 is connected to the auxiliary transmission 6 through a gear train 12 and a universal joint 13, and a front wheel drive shaft 14 and the front wheel drive shaft 14 are provided. The front wheel diff device 15 is connected to the front wheel diff device 15. Each diff yoke shaft 16 of the front wheel diff device 15 is connected to the front wheel 1 through a gear train 17, and the front wheel 1 can be steered around the kingpin. ing.
【００１３】本発明は、上記前輪駆動系路11において、
前輪駆動軸14と前輪デフ装置15との間に、増速切換機構
Ｂを設けたことを特徴とする。According to the present invention, in the front wheel drive train 11,
A speed increasing switching mechanism B is provided between the front wheel drive shaft 14 and the front wheel differential device 15.
【００１４】図３を参照して、かかる増速切換機構Ｂの
構成を詳細に説明する。The structure of the speed increasing switching mechanism B will be described in detail with reference to FIG.
【００１５】図中、21は前輪デフ装置15を内蔵し、かつ
ケース揺動支持部21a によって左右に揺動自在に支持さ
れたフロントアクスルケースであり、同フロントアクス
ルケース21は、その後部に、後方に向けて延出した筒状
ケーシング20の基端を突設しており、同筒状ケーシング
20は、その中途部を、上端を機枠22に固定した軸受24に
よって支持されている。In the figure, reference numeral 21 denotes a front axle case which has a front wheel differential device 15 built-in and is supported by a case swing support portion 21a so as to be swingable right and left, and the front axle case 21 is provided at a rear portion thereof. The base end of a tubular casing 20 extending rearward is provided so as to project.
The middle portion of 20 is supported by a bearing 24 whose upper end is fixed to the machine frame 22.
【００１６】なお、25及び26は機枠22の底部に設けたオ
イルパンとクラッチハウジングであり、筒状ケーシング
20は、これらに接触しないように配設される。 また、
かかる筒状ケーシング20は、その内部に、前輪デフ装置
15から前輪駆動軸14に向けて、前輪デフ装置15の歯車列
を噛合するベベルギヤ27を前端に具備するピニオン軸29
と、後端を自在継手13によって前輪駆動軸14と連動連結
した増速切換機構入力軸30とを直列に配設している。Numerals 25 and 26 are an oil pan and a clutch housing provided at the bottom of the machine frame 22, which are cylindrical casings.
The 20 is arranged so as not to contact them. Also,
The tubular casing 20 has a front wheel differential device inside thereof.
A pinion shaft 29 having a bevel gear 27 at the front end that meshes with the gear train of the front wheel differential device 15 from 15 to the front wheel drive shaft 14.
And a speed-up switching mechanism input shaft 30 whose rear end is interlockingly connected to the front-wheel drive shaft 14 by a universal joint 13 are arranged in series.
【００１７】また、31はピニオン軸29の略全長にわたっ
て同心円的にかつ相対回転自在に取付けた中間回転筒で
あり、同中間回転筒31は、その前端に、軸線方向に摺動
自在だがスプラインによって中間回転筒31と一体回転す
る摺動カム体32を取付けており、同摺動カム体32は、切
換クラッチ33を介して、ピニオン軸29の中途に固着した
フランジ34と着脱自在に係合している。Further, 31 is an intermediate rotary cylinder which is concentrically and relatively rotatably mounted over substantially the entire length of the pinion shaft 29. The intermediate rotary cylinder 31 is slidable in the axial direction at its front end but by a spline. A sliding cam body 32 that rotates integrally with the intermediate rotary cylinder 31 is attached, and the sliding cam body 32 is detachably engaged with a flange 34 fixed in the middle of the pinion shaft 29 via a switching clutch 33. ing.
【００１８】なお、摺動カム体32は枢軸35によって揺動
自在に枢支した揺動ホーク36によって軸線方向に移動さ
れるものであり、かかる揺動ホーク36は、図示しない操
舵機構と連動連結され、切換クラッチ33の係合離脱を行
うことができる。The sliding cam body 32 is moved in the axial direction by a swing fork 36 pivotally supported by a pivot 35, and the swing fork 36 is interlocked with a steering mechanism (not shown). Thus, the switching clutch 33 can be engaged and disengaged.
【００１９】また、37は中間回動筒31の中途であって、
かつ、摺動カム体32に隣接した位置に取付けたブレーキ
であり、摩擦用多板より構成されており、同ブレーキ37
は、摺動カム体32の軸線方向移動によってスプリング38
を圧縮することによって、中間回動筒31を筒状ケーシン
グ20に固定し、その回転を減速乃至停止することができ
る。Further, 37 is the middle of the intermediate rotation cylinder 31,
Moreover, it is a brake attached to a position adjacent to the sliding cam body 32, and is composed of multiple plates for friction.
Is caused by the movement of the sliding cam body 32 in the axial direction.
By compressing, the intermediate rotation cylinder 31 can be fixed to the cylindrical casing 20, and its rotation can be decelerated or stopped.
【００２０】また、40はピニオン軸29の後端に設けた増
速用デフ機構であり、同デフ機構40は、ピニオン軸29の
後端廻りに同心円的にかつデフケース41を取付け、同デ
フケース41の内面にピニオン軸29の軸線と直交する方向
に軸線を有するベベルギヤ42を取付け、同ベベルギヤ42
の前面と後面とをそれぞれピニオン軸29の後端に固着し
たベベルギヤ43と中間回動筒31の後端に一体的に形成し
たベベルギヤ44と噛合させ、さらに、デフケース41の後
端に設けたスプライン部41-1を増速切換機構入力軸30の
前端に形成したスプライン部30-1と噛合させることによ
って構成している。Reference numeral 40 denotes a speed increasing differential mechanism provided at the rear end of the pinion shaft 29. The differential mechanism 40 concentrically mounts a differential case 41 around the rear end of the pinion shaft 29 and attaches the differential case 41. Attach a bevel gear 42 having an axis in a direction orthogonal to the axis of the pinion shaft 29 to the inner surface of the bevel gear 42.
The front surface and the rear surface of the pinion shaft 29 are meshed with a bevel gear 43 fixed to the rear end of the pinion shaft 29 and a bevel gear 44 integrally formed at the rear end of the intermediate rotation tube 31, respectively. The portion 41-1 is configured by meshing with the spline portion 30-1 formed at the front end of the speed increasing switching mechanism input shaft 30.
【００２１】ついで、上記構成を有する増速切換機構Ｂ
の作用について説明する。Next, the speed increasing switching mechanism B having the above structure
The operation of will be described.
【００２２】エンジン３を始動し、主クラッチ４を接続
すると、エンジン３の動力は、主クラッチ４、主変速装
置５、副変速装置６、後輪デフ装置７及び最終減速装置
９を介して各後輪２へ伝達される。When the engine 3 is started and the main clutch 4 is connected, the power of the engine 3 is transmitted through the main clutch 4, the main transmission 5, the auxiliary transmission 6, the rear wheel differential device 7 and the final reduction gear 9. It is transmitted to the rear wheel 2.
【００２３】一方、副変速装置６から前輪駆動軸14, 増
速切換機構Ｂ、前輪デフ装置15を介して各前輪１へ伝達
されるので、トラクターＡは、この前輪１及び後輪２の
四輪を駆動輪として走行することになる。 しかして、
直進走行時には、前輪１と後輪２とを同じ速度で駆動さ
れることになるが、これを駆動系統説明図を参照して説
明すると、以下の如くなる。On the other hand, since the transmission is transmitted from the sub transmission 6 to each front wheel 1 via the front wheel drive shaft 14, the speed increasing switching mechanism B, and the front wheel differential device 15, the tractor A has four front wheels 1 and two rear wheels 2. The wheels will drive as driving wheels. Then
When traveling straight ahead, the front wheels 1 and the rear wheels 2 are driven at the same speed. This will be described below with reference to the drive system explanatory diagram.
【００２４】即ち、操舵機構は揺動ホーク36を作動する
程度には操舵されていないので、ブレーキ37は作動して
おらず、中間回転筒31は筒状ケーシング21に固定されて
おらず、一方、切換クラッチ33によって中間回転筒31は
ピニオン軸29に一体的に連結された状態にある。That is, since the steering mechanism is not steered to the extent that the rocking hawk 36 is operated, the brake 37 is not operated, the intermediate rotary cylinder 31 is not fixed to the tubular casing 21, and The intermediate rotating cylinder 31 is integrally connected to the pinion shaft 29 by the switching clutch 33.
【００２５】そのため、前輪駆動軸14の回転は、増速切
換機構入力軸30からデフケース41に伝達されるが、ベベ
ルギヤ42, ベベルギヤ43, ピニオン軸29, ベベルギヤ4
4, 中間回転筒31は、前輪駆動軸14と同一速度で回転
し、その後、前輪デフ装置15及び前輪ヨーク軸16を介し
て前輪１に伝達されることになる。Therefore, the rotation of the front wheel drive shaft 14 is transmitted from the speed-increasing switching mechanism input shaft 30 to the differential case 41, but the bevel gear 42, the bevel gear 43, the pinion shaft 29, the bevel gear 4
4. The intermediate rotary cylinder 31 rotates at the same speed as the front wheel drive shaft 14, and then is transmitted to the front wheel 1 via the front wheel differential device 15 and the front wheel yoke shaft 16.
【００２６】一方、操舵機構が揺動ホーク36を作動する
程度に操舵されると、ブレーキ37が作動し、中間回転筒
31は筒状ケーシング20に固定されることになるととも
に、切換クラッチ33の離脱によって、ピニオン軸29と中
間回転筒31との連結は解除されることになる。On the other hand, when the steering mechanism is steered to the extent that the rocking hawk 36 is operated, the brake 37 is operated and the intermediate rotary cylinder
31 is fixed to the tubular casing 20, and the disengagement of the switching clutch 33 releases the connection between the pinion shaft 29 and the intermediate rotary cylinder 31.
【００２７】そのため、前輪駆動軸14の回転は、増速切
換機構入力軸30からデフケース41に伝達されるが、ベベ
ルギヤ42からベベルギヤ43、ピニオン軸29及びフロント
アクスルケース21への伝達経路のみが活きており、これ
と、デフケース41との相対回転によって、差動歯車機構
を形成し、ピニオン軸29は、前輪駆動軸14の２倍の速度
で回転し、その後、前輪デフ装置15及び前輪ヨーク軸16
を介して前輪１に伝達されることになる。Therefore, the rotation of the front wheel drive shaft 14 is transmitted from the speed-increasing switching mechanism input shaft 30 to the differential case 41, but only the transmission path from the bevel gear 42 to the bevel gear 43, the pinion shaft 29 and the front axle case 21 is used. The relative rotation between this and the differential case 41 forms a differential gear mechanism, the pinion shaft 29 rotates at twice the speed of the front wheel drive shaft 14, and then the front wheel differential device 15 and the front wheel yoke shaft. 16
Will be transmitted to the front wheel 1 via.
【００２８】従って、トラクターＡは小旋回半径でスリ
ップを生じることなく、旋回することができる。Therefore, the tractor A can turn at a small turning radius without slipping.
【００２９】また、上記構成において、増速切換機構Ｂ
を除いて他の構成要素は標準仕様であるため、小旋回可
能な旋回機構を容易かつ安価に構成でき、後付け( オプ
ション) も容易となる。また、フロントアクスルケース
21後方に増速切換機構Ｂを配設したため、余計な伝動部
を不用とすることができ、走行の障害とならない。さら
に、前方に増速切換機構Ｂを有するため、前後重量バラ
ンスが良好となり、旋回中心が従来より前方にくるた
め、旋回半径を小さくすることができる。Further, in the above structure, the speed increasing switching mechanism B
Except for the above, other components are standard specifications, so a swivel mechanism that allows small swivels can be configured easily and inexpensively, and retrofitting (option) becomes easy. Also, front axle case
21 Since the speed-increasing switching mechanism B is arranged on the rear side, an unnecessary transmission portion can be dispensed with, which does not hinder traveling. Further, since the speed increasing / switching mechanism B is provided on the front side, the weight balance between the front and the rear is improved, and the center of turning comes to the front side as compared with the conventional case, so that the turning radius can be reduced.
【００３０】[0030]
【発明の効果】本発明によれば、前輪駆動系路中に増速
用デフ機構を設けると共に、同増速用デフ機構と、同増
速用デフ機構の一方のベベルギヤを減速乃至停止状態に
して、他方の前輪駆動側のベベルギヤを増速させるブレ
ーキと、操舵機構側の一定切り角以上の旋回操作に応じ
て標準駆動状態を解除できる切換クラッチとを設けて増
速切換機構を構成し、しかも、増速用デフ機構と、ブレ
ーキと、切換クラッチを直線状に配設したものであるか
ら、増速切換機構がコンパクトに構成されると共に、増
速切換が円滑に行われるものである。According to the present invention, the speed increasing diff mechanism is provided in the front wheel drive system road, and the speed increasing diff mechanism and one bevel gear of the speed increasing diff mechanism are decelerated or stopped. Then, a brake that accelerates the bevel gear on the other front wheel drive side and a switching clutch that can release the standard drive state in response to a turning operation over a certain turning angle on the steering mechanism side are provided to configure the speed-up switching mechanism, Moreover, since the speed increasing diff mechanism, the brake, and the switching clutch are linearly arranged, the speed increasing switching mechanism is compact and the speed increasing switching is smoothly performed.
【００３１】また、操舵機構側の旋回操作に応じて、ブ
レーキの押圧力が徐々に調整されて前輪側の増速比を変
更できるので、圃場条件及び機体の操向速度に対して最
適な旋回速度により小旋回が可能である。したがって、
各種作業を能率的に行うことができるものである。In addition, the pressing force of the brake can be gradually adjusted according to the turning operation on the steering mechanism side to change the speed increasing ratio on the front wheel side, so that the turning is optimal for the field conditions and the steering speed of the machine. A small turn is possible depending on the speed. Therefore,
Various operations can be performed efficiently.
【図１】本発明に係る旋回機構を具備する前輪舵取り車
両（トラクター）の側面図である。FIG. 1 is a side view of a front wheel steering vehicle (tractor) equipped with a turning mechanism according to the present invention.
【図２】同駆動系統図である。FIG. 2 is a drive system diagram of the same.
【図３】旋回機構の拡大構造説明図である。FIG. 3 is an enlarged structural explanatory view of a turning mechanism.
Ａ トラクター Ｂ 増速切換機構 １ 前輪 11 前輪駆動系路 15 前輪デフ装置 33 切換クラッチ 37 ブレーキ 40 増速用デフ機構 41 デフケース 42 ベベルギヤ 43 ベベルギヤ 44 ベベルギヤ A tractor B speed-up switching mechanism 1 front wheel 11 front-wheel drive system road 15 front-wheel diff device 33 switching clutch 37 brake 40 speed-up diff mechanism 41 differential case 42 bevel gear 43 bevel gear 44 bevel gear
Claims (2)
向操作自在な前輪１へ動力を伝達する前輪駆動系路11
に、後輪駆動速度と略等しい駆動速度で伝動する標準駆
動状態と、後輪駆動速度より大きい駆動速度で伝動する
増速駆動状態とに切換可能とした前輪舵取り車両におい
て、 前輪駆動系路11中に、ブレーキ37に連動連結するベベル
ギヤ44と、デフケース41に連結したベベルギヤ42と、前
輪デフ装置15側に連動したベベルギヤ43により構成した
増速用デフ機構40を設けると共に、同増速用デフ機構40
と、同増速用デフ機構40の一方のベベルギヤ44を減速乃
至停止状態にして、前輪駆動側のベベルギヤ43を増速さ
せるブレーキ37と、操舵機構側の一定切り角以上の旋回
操作に応じて標準駆動状態を解除できる切換クラッチ33
とを設けて増速切換機構Ｂを構成し、しかも、増速用デ
フ機構40と、ブレーキ37と、切換クラッチ33を直線状に
配設したことを特徴とする前輪舵取り車両における旋回
機構。1. A front-wheel drive system path 11 for interlockingly connecting to a front-wheel diff device 15 and transmitting power to a front wheel 1 which can be steerably operated.
In the front-wheel steering vehicle in which the front-wheel steering system is capable of switching between the standard drive state in which the drive speed is substantially equal to the rear-wheel drive speed and the increased drive state in which the drive speed is higher than the rear-wheel drive speed, Inside, there is provided a speed increasing diff mechanism 40 composed of a bevel gear 44 linked to the brake 37, a bevel gear 42 linked to the diff case 41, and a bevel gear 43 linked to the front wheel differential device 15 side. Mechanism 40
And a brake 37 for increasing the speed of the bevel gear 43 on the front wheel drive side by decelerating or stopping one bevel gear 44 of the speed increasing diff mechanism 40, and in response to a turning operation over a certain turning angle on the steering mechanism side. Switching clutch 33 that can release the standard drive state
Is provided to configure the speed increasing switching mechanism B, and further, the speed increasing differential mechanism 40, the brake 37, and the switching clutch 33 are linearly arranged.
結すると共に、同増速切換機構Ｂに設けるブレーキ37
は、操舵機構側の一定切り角以上の旋回操作量に比例し
て、ブレーキを構成する摩擦用多板への押圧力を徐々に
増加し、徐々に減速機能を生起すべく構成したことを特
徴とする請求項１起債の前輪舵取り車両における旋回機
構。2. A brake 37 provided on the speed increase switching mechanism B while interlockingly connecting the speed increase switching mechanism B and the steering mechanism.
It is proportional to the rotation operation amount above a certain cutting angle of steering rudder mechanism side
Gradually increase the pressing force on the friction plates that make up the brake.
The turning mechanism in a front wheel steering vehicle according to claim 1, wherein the turning mechanism is configured to increase and gradually generate a deceleration function .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3242095A JP2556782B2 (en) | 1991-09-20 | 1991-09-20 | Turning mechanism in front-wheel steering vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3242095A JP2556782B2 (en) | 1991-09-20 | 1991-09-20 | Turning mechanism in front-wheel steering vehicle |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2896987A Division JPH0735129B2 (en) | 1987-02-10 | 1987-02-10 | Turning mechanism in front-wheel steering vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0747852A JPH0747852A (en) | 1995-02-21 |
| JP2556782B2 true JP2556782B2 (en) | 1996-11-20 |
Family
ID=17084227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3242095A Expired - Lifetime JP2556782B2 (en) | 1991-09-20 | 1991-09-20 | Turning mechanism in front-wheel steering vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2556782B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101982337A (en) * | 2010-09-01 | 2011-03-02 | 广东棕榈园林股份有限公司 | Tractor for loading nursery stock |
| IT201800005615A1 (en) * | 2018-05-23 | 2019-11-23 | SELF-PROPELLED VEHICLE WITH FULL DRIVE | |
| KR102582845B1 (en) * | 2021-11-23 | 2023-09-26 | 주식회사 진명파워텍 | Work vehicle and driving extraction device of work vehicle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5347631A (en) * | 1976-10-13 | 1978-04-28 | Iseki & Co Ltd | Construction for front wheel driving section of power-driven agricultural machinery |
| JPS5398630A (en) * | 1977-02-08 | 1978-08-29 | Ishikawajima Shibaura Mach | Front axle driving system |
| JPS54120138A (en) * | 1978-03-07 | 1979-09-18 | Yanmar Agricult Equip | Traveling driving gear of traveling repair lorry* etc* |
| JPS5660728A (en) * | 1979-10-22 | 1981-05-25 | Kubota Ltd | Four-wheel drive tractor |
| JPS58136521A (en) * | 1982-02-05 | 1983-08-13 | Kubota Ltd | Steering and traveling device of front wheel driven tractor |
| JPS58211923A (en) * | 1982-06-04 | 1983-12-09 | Kubota Ltd | Front wheel speed control device of four-wheeled drive vehicle |
| JPS59176117A (en) * | 1983-03-22 | 1984-10-05 | Kubota Ltd | 4-wheel-drive type tractor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58157727U (en) * | 1982-04-15 | 1983-10-21 | ヤンマー農機株式会社 | Four-wheel drive device for mobile agricultural machinery |
| JPS5966627U (en) * | 1982-10-28 | 1984-05-04 | ヤンマー農機株式会社 | Swing control device for four-wheel drive agricultural tractors |
| JPS59136330U (en) * | 1983-03-02 | 1984-09-11 | 株式会社クボタ | Power take-off device for front wheel drive |
| JPH0632438Y2 (en) * | 1987-04-10 | 1994-08-24 | 三菱農機株式会社 | Four-wheel drive agricultural tractor |
-
1991
- 1991-09-20 JP JP3242095A patent/JP2556782B2/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5347631A (en) * | 1976-10-13 | 1978-04-28 | Iseki & Co Ltd | Construction for front wheel driving section of power-driven agricultural machinery |
| JPS5398630A (en) * | 1977-02-08 | 1978-08-29 | Ishikawajima Shibaura Mach | Front axle driving system |
| JPS54120138A (en) * | 1978-03-07 | 1979-09-18 | Yanmar Agricult Equip | Traveling driving gear of traveling repair lorry* etc* |
| JPS5660728A (en) * | 1979-10-22 | 1981-05-25 | Kubota Ltd | Four-wheel drive tractor |
| JPS58136521A (en) * | 1982-02-05 | 1983-08-13 | Kubota Ltd | Steering and traveling device of front wheel driven tractor |
| JPS58211923A (en) * | 1982-06-04 | 1983-12-09 | Kubota Ltd | Front wheel speed control device of four-wheeled drive vehicle |
| JPS59176117A (en) * | 1983-03-22 | 1984-10-05 | Kubota Ltd | 4-wheel-drive type tractor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0747852A (en) | 1995-02-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |