JPH0858410A - Running drive controller for tractor - Google Patents
Running drive controller for tractorInfo
- Publication number
- JPH0858410A JPH0858410A JP6198497A JP19849794A JPH0858410A JP H0858410 A JPH0858410 A JP H0858410A JP 6198497 A JP6198497 A JP 6198497A JP 19849794 A JP19849794 A JP 19849794A JP H0858410 A JPH0858410 A JP H0858410A
- Authority
- JP
- Japan
- Prior art keywords
- speed
- wheel
- tractor
- clutch
- double
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Arrangement And Driving Of Transmission Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、トラクタの走行駆動
を前車輪倍速の前後車輪駆動に制御しうる走行駆動制御
装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling drive control device capable of controlling traveling drive of a tractor to drive front and rear wheels at double speed of front wheels.
【０００２】[0002]
【従来の技術、および発明が解決しようとする課題】湿
田でのトラクタ作業（例えばプラウ作業等）では、前後
車輪を駆動しても、後車輪がスリップするときは、作業
能率が上がらない。2. Description of the Related Art In tractor work (for example, plow work) in a wetland, even if the front and rear wheels are driven, the work efficiency does not increase when the rear wheels slip.
【０００３】[0003]
【課題を解決するための手段】この発明は、直進走行時
に、前車輪１の回転が実車速よりも一定以上速くなるこ
とによって、この前車輪１の回転を後車輪２の回転のほ
ぼ二倍に伝動する倍速四輪駆動クラッチ３を入りにする
ことを特徴とするトラクタの走行駆動制御装置の構成と
する。According to the present invention, the rotation of the front wheels 1 is faster than the actual vehicle speed by a certain amount or more during straight running, so that the rotation of the front wheels 1 is almost twice that of the rear wheels 2. The double-speed four-wheel drive clutch 3 that is transmitted to the vehicle is engaged, and the traveling drive control device for the tractor is configured.
【０００４】[0004]
【作用、及び発明の効果】前車輪１と後車輪２とを駆動
走行する作業では、後車輪２がスリップすることによ
り、実車速よりも前車輪１の回転が速くなることがあ
る。このような状態において、実車速に対して前車輪１
の回転速度が一定以上に高くなると、倍速四輪駆動クラ
ッチ３が自動的に入りになって、この前車輪１の伝動が
後車輪２の伝動に対してほぼ二倍の回転駆動となり、前
車輪１の高速駆動によってトラクタ車体の牽引力を増
し、湿田状態の走行条件にあっても円滑な走行を行いう
る。このため、湿田の走行性が良く、作業精度を高める
ことができる。In the work of driving the front wheel 1 and the rear wheel 2 by driving, the front wheel 1 may rotate faster than the actual vehicle speed due to the slip of the rear wheel 2. In such a state, the front wheel 1 with respect to the actual vehicle speed
When the rotational speed of the vehicle becomes higher than a certain value, the double-speed four-wheel drive clutch 3 is automatically turned on, and the transmission of the front wheel 1 is almost twice as much as that of the rear wheel 2, and the front wheel is driven. The high-speed driving of No. 1 increases the traction force of the tractor vehicle body, so that smooth running can be performed even under running conditions in a wetland state. For this reason, the traveling property of the wetland is good, and the working accuracy can be improved.
【０００５】[0005]
【実施例】トラクタ車体４は、前部にエンジンＥを有
し、クラッチハウジング５、前部ミッションケ−ス６、
及び後部ミッションケ−ス７等を一体的に速設し、エン
ジンＥ前部には、フロントアクスルハウジング８で軸装
されてステアリングハンドル９で操向自在の前車輪１を
有し、後部ミッションケ−ス７の左右両側には、リヤア
クスルハウジング１０で軸装される後車輪２を有し、前
記エンジンＥの駆動によって、主クラッチ１１、リバ−
サクラッチ１２、主変速装置１３、副変速装置１４等を
経て、後輪デフ装置１５から左右両側の後車輪２へ伝動
する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A tractor vehicle body 4 has an engine E in the front portion thereof, a clutch housing 5, a front transmission case 6,
Further, the rear mission case 7 and the like are integrally installed at a speed, and the front part of the engine E has front wheels 1 which are axially mounted by a front axle housing 8 and can be steered by a steering handle 9. The rear wheels 2 mounted on the left and right sides of the wheel 7 are mounted on the rear axle housing 10, and by driving the engine E, the main clutch 11 and the river
It is transmitted from the rear wheel differential device 15 to the rear wheels 2 on the left and right sides via the clutch 12, the main transmission device 13, the auxiliary transmission device 14, and the like.
【０００６】又、この副変速装置１４からは、前車輪１
へ伝動するための前輪取出軸１６が、前輪クラッチ１
７、及びフロントアクスルハウジング８内の前輪デフ装
置１８を経て伝動される。前記前輪クラッチ１７は、前
車輪１を後車輪２とほぼ同速比で駆動する等速四輪駆動
クラッチ１９と、後車輪２のほぼ二倍の速比で駆動する
倍速四輪駆動クラッチ３とを有し、いずれのクラッチ１
９，３共に切りの位置では、前車輪１を伝動しない二輪
駆動２ＷＤ走行となる。即ち、通常は二輪駆動２ＷＤ走
行であるが、いずれかのクラッチ１９，３を入れること
によって、等速、又は倍速の四輪駆動４ＷＤ走行とする
ことができる。From the sub transmission 14, the front wheels 1
The front wheel take-out shaft 16 for transmitting to the front wheel clutch 1
7 and a front wheel differential device 18 in the front axle housing 8 for transmission. The front wheel clutch 17 includes a constant-velocity four-wheel drive clutch 19 that drives the front wheels 1 at substantially the same speed ratio as the rear wheels 2, and a double-speed four-wheel drive clutch 3 that drives at a speed ratio approximately twice that of the rear wheels 2. Has any clutch 1
When both 9 and 3 are in the off position, the two-wheel drive 2WD traveling in which the front wheels 1 are not transmitted is performed. That is, normally, two-wheel drive 2WD traveling is performed, but by engaging either of the clutches 19 and 3, it is possible to perform constant-speed or double-speed four-wheel drive 4WD traveling.
【０００７】なお、２１は操縦席、２２はフェンダ−、
２３はリフトア−ムである。２４は動力取出軸で、車体
４の後部等に連結する作業機を伝動することができる。
前記前輪クラッチ１７を出力制御するコントロ−ラ２５
の入力としては、前車輪１の操向角度を検出するステア
リングセンサ２６と、前輪クラッチ１７の入力側の入力
軸２７の回転数を検出する前輪入力軸センサ２８と、出
力側の前輪取出軸１６の回転数を検出する前輪出力軸セ
ンサ２９と、車輪４の地面に対する実車速を検出するド
ップラ−センサ３０と、走行伝動等を湿田に適応するモ
−ドに切替える湿田モ−ドスイッチや、走行旋回モ−ド
スイッチ３２等を有する。21 is a cockpit, 22 is a fender,
23 is a lift arm. A power take-off shaft 24 can transmit a working machine connected to a rear portion of the vehicle body 4 or the like.
A controller 25 for controlling the output of the front wheel clutch 17.
The steering sensor 26 that detects the steering angle of the front wheels 1, the front wheel input shaft sensor 28 that detects the rotation speed of the input shaft 27 of the input side of the front wheel clutch 17, and the front wheel take-out shaft 16 of the output side Front wheel output shaft sensor 29 for detecting the number of revolutions of the vehicle, a Doppler sensor 30 for detecting the actual vehicle speed of the wheel 4 with respect to the ground, a wetland mode switch for switching traveling transmission to a mode suitable for wetlands, and traveling. It has a turning mode switch 32 and the like.
【０００８】又、コントロ−ラ２５の出力側には、前記
前輪クラッチ１７の油圧による切替えを行う等速四輪駆
動ソレノイド３３と、倍速四輪駆動ソレノイド３４と、
リフトア−ム２３を昇降するための昇降ソレノイドバル
ブ３５と、後車輪２を制動するためにリヤアクスルハウ
ジング１０内に設けられる操向ブレ−キを制動する操向
ブレ−キソレノイドバルブ３６等を有する。On the output side of the controller 25, a constant velocity four-wheel drive solenoid 33 for switching the hydraulic pressure of the front wheel clutch 17 and a double-speed four-wheel drive solenoid 34 are provided.
A lift solenoid valve 35 for raising and lowering the lift arm 23, a steering brake solenoid valve 36 for braking a steering brake provided in the rear axle housing 10 for braking the rear wheels 2, and the like are provided.
【０００９】又、ダッシュボ−ドのメ−タパネル３７に
は、前記等速四輪駆動クラッチ１９の入り切りの表示器
３８、倍速四輪駆動クラッチ３の入り切りの表示器３
９、これらの手動切替を行う四輪駆動切替スイッチ４０
等を設けている。湿田モ−ドスイッチ３１をＯＮにし
て、直進走行時の制御では、図５のように、前後車輪
１，２の回転差を検出しながら、二輪駆動２ＷＤと四輪
駆動４ＷＤとの切替が、前輪クラッチ１７によって行わ
れる。スリップ検出時や、前車輪１のオ−バ−ラン検出
時は、四輪駆動４ＷＤとなる。後車輪２がスリップする
等の原因によって、ドップラ−センサ３０による実車速
の検出値が低下して、前輪出力軸センサ２９による検出
速度が該実車速よりも予め設定された一定以上に速くな
ると、これによって倍速四輪駆動ソレノイド３４が出力
されて、等速四輪駆動クラッチ１９が切りで、倍速四輪
駆動クラッチ３が入りになって、等速四輪駆動から倍速
四輪駆動に切替えられて、前車輪１が後車輪２のほぼ二
倍の速度に駆動されるため、前車輪１による駆動力によ
って湿田走行をも円滑に行うことができる。Further, on the dashboard panel 37 of the dashboard, an indicator 38 for turning on / off the constant speed four-wheel drive clutch 19 and an indicator 3 for turning on / off the double speed four-wheel drive clutch 3 are provided.
9. Four-wheel drive selector switch 40 for manually switching these
Etc. With the wetland mode switch 31 turned ON, in the control during straight running, switching between the two-wheel drive 2WD and the four-wheel drive 4WD is performed while detecting the rotation difference between the front and rear wheels 1 and 2, as shown in FIG. It is performed by the front wheel clutch 17. At the time of slip detection or the overrun detection of the front wheel 1, the four-wheel drive 4WD is selected. When the detected value of the actual vehicle speed by the Doppler sensor 30 decreases due to a cause such as the rear wheel 2 slipping, and the detected speed by the front wheel output shaft sensor 29 becomes higher than the actual vehicle speed by a preset value or more, As a result, the double-speed four-wheel drive solenoid 34 is output, the constant-speed four-wheel drive clutch 19 is disengaged, the double-speed four-wheel drive clutch 3 is turned on, and the constant-speed four-wheel drive is switched to the double-speed four-wheel drive. Since the front wheels 1 are driven at a speed almost double that of the rear wheels 2, the driving force of the front wheels 1 enables smooth running in the wetland.
【００１０】操向旋回モ−ドスイッチ３２で自動操向ブ
レ−キモ−ドを指定するときは、ステアリングハンドル
９の操向旋回操作によって、ステアリングセンサ２６が
一定の切れ角を検出することにより、昇降ソレノイドバ
ルブ３５が出力されてリフトア−ム２３が上昇されて、
作業機を土壌面から浮上させて、倍速四輪駆動ソレノイ
ド３４を出力して倍速四輪駆動クラッチ３を入りにして
前車輪１を後車輪２に対してほぼ二倍の速度に変速駆動
し、旋回側の後車輪２における操向ブレ−キが操向ブレ
−キソレノイドバルブ３６の出力によって制動される。When the automatic steering brake mode is designated by the steering turning mode switch 32, the steering sensor 26 detects a constant turning angle by the steering turning operation of the steering handle 9. The lift solenoid valve 35 is output to lift the lift arm 23,
The work implement is levitated from the soil surface, the double-speed four-wheel drive solenoid 34 is output, the double-speed four-wheel drive clutch 3 is turned on, and the front wheel 1 is speed-changed to almost double the speed with respect to the rear wheel 2. The steering brake on the turning rear wheel 2 is braked by the output of the steering brake solenoid valve 36.
【００１１】図６，図７において、ダッシュボ−ド４１
部のペタル配置及びスイッチについて、ハンドルポスト
４２部の左右に主クラッチ１１を操作するクラッチペタ
ル４３と、左右の後車輪２の操向ブレ−キを制動するブ
レ−キペタル４４，４５とを設け、このダッシュボ−ド
４１部の下部フロア部で該クラッチペタル４３の横側部
に、湿田脱出用のスイッチ４６を設ける。In FIGS. 6 and 7, the dashboard 41 is shown.
Regarding the petal arrangement and switches of the parts, a clutch petal 43 for operating the main clutch 11 and brake petals 44, 45 for braking the steering brakes of the left and right rear wheels 2 are provided on the left and right of the handle post 42. A switch 46 for escaping the wetland is provided on the lower floor of the dash board 41 on the lateral side of the clutch petal 43.
【００１２】このスイッチ４６は、前記コントロ−ラ２
５へ入力して、前記倍速四輪駆動ソレノイド３４を出力
させて、倍速四輪駆動クラッチ３を入りにする。湿田作
業時は右足で左右の操向ブレ−キペタル４４，４５を操
作することが多く、スイッチ４６を主クラッチペタル４
３と同じ左側の足元部に設置することによって、該操作
をなくすることができる。This switch 46 is used for the controller 2
5, the double speed four-wheel drive solenoid 34 is output, and the double speed four-wheel drive clutch 3 is turned on. During wetland work, the right foot is often used to operate the left and right steering brake petals 44, 45, and the switch 46 is used for the main clutch petal 4.
The operation can be eliminated by installing the same on the left foot part as that of No. 3.
【図１】走行駆動制御装置のブロック図FIG. 1 is a block diagram of a traveling drive control device.
【図２】トラクタの伝動装置の側面図FIG. 2 is a side view of the transmission of the tractor.
【図３】トラクタの側面図FIG. 3 is a side view of the tractor.
【図４】走行駆動制御のブロック図FIG. 4 is a block diagram of traveling drive control.
【図５】その一部のフロ−チャ−トFIG. 5: Part of the flow chart
【図６】トラクタのダッシュボ−ド部の側面図FIG. 6 is a side view of the dashboard portion of the tractor.
【図７】その背面図[Figure 7] Rear view
１ 前車輪 ２ 後車輪 ３ 倍速四輪駆動クラッチ 1 front wheel 2 rear wheel 3 speed four-wheel drive clutch
Claims (1)
よりも一定以上速くなることによって、この前車輪１の
回転を後車輪２の回転のほぼ二倍に伝動する倍速四輪駆
動クラッチ３を入りにすることを特徴とするトラクタの
走行駆動制御装置。1. A double-speed four-wheel drive clutch for transmitting the rotation of the front wheel 1 almost twice as much as the rotation of the rear wheel 2 when the rotation of the front wheel 1 becomes higher than the actual vehicle speed by a certain amount or more during straight running. A traveling drive control device for a tractor, characterized in that the number 3 is included.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6198497A JPH0858410A (en) | 1994-08-23 | 1994-08-23 | Running drive controller for tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6198497A JPH0858410A (en) | 1994-08-23 | 1994-08-23 | Running drive controller for tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0858410A true JPH0858410A (en) | 1996-03-05 |
Family
ID=16392117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6198497A Pending JPH0858410A (en) | 1994-08-23 | 1994-08-23 | Running drive controller for tractor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0858410A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008208986A (en) * | 2007-02-23 | 2008-09-11 | Deere & Co | Engagement method of differential lock by determining wheel slippage of working vehicle |
-
1994
- 1994-08-23 JP JP6198497A patent/JPH0858410A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008208986A (en) * | 2007-02-23 | 2008-09-11 | Deere & Co | Engagement method of differential lock by determining wheel slippage of working vehicle |
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