JPH0226976U - - Google Patents

Info

Publication number
JPH0226976U
JPH0226976U JP10580088U JP10580088U JPH0226976U JP H0226976 U JPH0226976 U JP H0226976U JP 10580088 U JP10580088 U JP 10580088U JP 10580088 U JP10580088 U JP 10580088U JP H0226976 U JPH0226976 U JP H0226976U
Authority
JP
Japan
Prior art keywords
steering
pressure oil
agricultural machine
tractor
rear wheels
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.)
Granted
Application number
JP10580088U
Other languages
Japanese (ja)
Other versions
JPH0733973Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1988105800U priority Critical patent/JPH0733973Y2/en
Publication of JPH0226976U publication Critical patent/JPH0226976U/ja
Application granted granted Critical
Publication of JPH0733973Y2 publication Critical patent/JPH0733973Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)

Description

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

図面は、本考案のトラクタ等移動農機における
ステアリング装置の一実施例を示すものであつて
、第１図は、農用トラクタの全体側面図、第２図
は、一部切欠きして示す要部後面図、第３図は、
油圧機構回路図、第４図は、運転操作部の側面図
、第５図ａおよびｂは、走行時の作用説明図、で
ある。 図中、３，３……前輪、４，４……後輪、５…
…前輪操向機構、６……トランスミツシヨンケー
ス、７……後輪操向機構、７ａ……後輪操向シリ
ンダ、１０ａ……ステアリング、１１……変速切
換レバー、１９……パワーステアリングユニツト
、２２ｂ，２２ｃ……伸縮ロツド、２４……後輪
アクスルシヤフトケース、２８，２９……分流弁
、３０……切換バルブ機構、３１，３３……検知
スイツチ、である。 The drawings show an embodiment of the steering device for a mobile agricultural machine such as a tractor according to the present invention. FIG. 1 is an overall side view of the agricultural tractor, and FIG. 2 is a partially cutaway view of the main parts. The rear view and Figure 3 are as follows:
The hydraulic mechanism circuit diagram, FIG. 4 is a side view of the driving operation section, and FIGS. 5 a and 5 b are explanatory views of the operation during running. In the diagram, 3, 3... front wheels, 4, 4... rear wheels, 5...
...Front wheel steering mechanism, 6... Transmission case, 7... Rear wheel steering mechanism, 7a... Rear wheel steering cylinder, 10a... Steering, 11... Speed change lever, 19... Power steering unit , 22b, 22c...Telescopic rod, 24...Rear wheel axle shaft case, 28, 29...Diversion valve, 30...Switching valve mechanism, 31, 33...Detection switch.

Claims (1)

【実用新案登録請求の範囲】 (1) ステアリングの回転に対応して圧力油量を
制御するパワーステアリングユニツトと、該パワ
ーステアリングユニツトの圧力油を分流する分流
弁を介して前輪および後輪を操舵する操向機構と
を備えたトラクタ等移動農機におけるステアリン
グ装置において、上記操向機構には、変速切換レ
バーの操作に連繋して、後輪の後退および直進状
態を検知する検知スイツチを設けると共に、上記
検知スイツチの検知により、圧力油経路を切換る
切換バルブ機構を設けたことを特徴とするトラク
タ等移動農機におけるステアリング装置。 (2) 上記操向機構には、伸縮ロツドの伸縮によ
り後輪を操舵する後輪操向シリンダをトランスミ
ツシヨンケース内を貫通させ、かつ後輪アクスル
シヤフトケースと平行状に設けたことを特徴とす
る請求項１記載のトラクタ等移動農機におけるス
テアリング装置。[Scope of Claim for Utility Model Registration] (1) Steering the front and rear wheels through a power steering unit that controls the amount of pressure oil in response to the rotation of the steering wheel, and a diversion valve that divides the pressure oil of the power steering unit. In the steering device for a mobile agricultural machine such as a tractor, the steering mechanism is provided with a detection switch that detects whether the rear wheels are moving backward or straight in conjunction with the operation of the gear change lever, and A steering device for a mobile agricultural machine such as a tractor, characterized in that it is provided with a switching valve mechanism that switches a pressure oil path upon detection by the detection switch. (2) The above-mentioned steering mechanism is characterized in that a rear wheel steering cylinder that steers the rear wheels by expanding and contracting the telescopic rod is provided through the transmission case and parallel to the rear wheel axle shaft case. A steering device for a mobile agricultural machine such as a tractor according to claim 1.
JP1988105800U 1988-08-10 1988-08-10 Steering device for mobile agricultural machinery such as tractors Expired - Lifetime JPH0733973Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988105800U JPH0733973Y2 (en) 1988-08-10 1988-08-10 Steering device for mobile agricultural machinery such as tractors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988105800U JPH0733973Y2 (en) 1988-08-10 1988-08-10 Steering device for mobile agricultural machinery such as tractors

Publications (2)

Publication Number Publication Date
JPH0226976U true JPH0226976U (en) 1990-02-21
JPH0733973Y2 JPH0733973Y2 (en) 1995-08-02

Family

ID=31338740

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988105800U Expired - Lifetime JPH0733973Y2 (en) 1988-08-10 1988-08-10 Steering device for mobile agricultural machinery such as tractors

Country Status (1)

Country Link
JP (1) JPH0733973Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006001347A (en) * 2004-06-16 2006-01-05 Iseki & Co Ltd Axle case of working vehicle

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6092667U (en) * 1983-11-30 1985-06-25 三菱自動車工業株式会社 rear steering control device
JPS62187656A (en) * 1986-02-12 1987-08-17 Honda Motor Co Ltd Front and rear wheel steering device for vehicle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6092667U (en) * 1983-11-30 1985-06-25 三菱自動車工業株式会社 rear steering control device
JPS62187656A (en) * 1986-02-12 1987-08-17 Honda Motor Co Ltd Front and rear wheel steering device for vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006001347A (en) * 2004-06-16 2006-01-05 Iseki & Co Ltd Axle case of working vehicle

Also Published As

Publication number Publication date
JPH0733973Y2 (en) 1995-08-02

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