JPS63101226U - - Google Patents
Info
- Publication number
- JPS63101226U JPS63101226U JP20052186U JP20052186U JPS63101226U JP S63101226 U JPS63101226 U JP S63101226U JP 20052186 U JP20052186 U JP 20052186U JP 20052186 U JP20052186 U JP 20052186U JP S63101226 U JPS63101226 U JP S63101226U
- Authority
- JP
- Japan
- Prior art keywords
- speed
- drive
- front wheel
- steering
- drive state
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 3
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Arrangement And Driving Of Transmission Devices (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Description
図面は本考案に係る作業車の変速操作構造の実
施例を示し、第１図は前輪支持ケース周りの縦断
正面図、第２図はナツクルアーム支持軸とナツク
ルアームボス部との嵌合部の横断平面図、第３図
は操向角度検出装置と前輪変速装置等との連係状
態を示す図、第４図は農用トラクタの全体側面図
、第５図は比較例におけるナツクルアーム周りの
正面図である。
１……前輪、１０……前輪変速装置、１６……
前車軸ケース、１８……内軸、１９……ナツクル
アーム、１９ａ……円筒軸、２２……操向角度検
出装置。
The drawings show an embodiment of the speed change operation structure for a working vehicle according to the present invention, and FIG. 1 is a longitudinal sectional front view of the area around the front wheel support case, and FIG. 3 is a cross-sectional plan view, FIG. 3 is a diagram showing the state of cooperation between the steering angle detection device and the front wheel transmission, etc., FIG. 4 is an overall side view of the agricultural tractor, and FIG. 5 is a front view of the area around the knuckle arm in a comparative example. be. 1...Front wheel, 10...Front wheel transmission, 16...
Front axle case, 18...inner shaft, 19...knuckle arm, 19a...cylindrical shaft, 22...steering angle detection device.
Claims (1)
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える前輪変速装置１０を備え
ると共に、前記前輪１の操向角度を検出し設定角
度以上の操向操作により、前輪変速装置１０が増
速駆動状態側に切換操作されるように構成してあ
る作業車の変速操作構造であつて、前輪１の操向
操作系において互いに相対回動自在な内軸１８と
、前記内軸１８に嵌合される円筒軸１９ａとの嵌
合面部に、両軸１８，１９ａの相対回動角度を電
気的に検出する操向角度検出装置２２を設けてあ
る作業車の変速操作構造。 ２ 前記円筒軸１９ａを前輪１操向用のナツクル
アーム１９に形成し、前記内軸１８を前車軸ケー
ス１６両端のナツクルアーム支持軸で構成してあ
る実用新案登録請求の範囲第１項に記載の作業車
の変速操作構造。[Scope of Claim for Utility Model Registration] 1. The transmission system for the steerable front wheels 1 includes a standard drive state in which power is transmitted at a drive speed approximately equal to the rear wheel drive speed, and an increased drive state in which power is transmitted at a drive speed greater than the rear wheel drive speed. The front wheel transmission 10 is provided with a front wheel transmission 10 that switches to a high speed drive state, and the front wheel transmission 10 is switched to an increased speed drive state when the steering angle of the front wheels 1 is detected and the steering angle is greater than or equal to a set angle. This is a speed change operation structure for a working vehicle, in which an inner shaft 18 that is rotatable relative to each other in a steering operation system for front wheels 1 and a fitting surface portion of a cylindrical shaft 19a that is fitted to the inner shaft 18 are provided. A speed change operation structure for a work vehicle is provided with a steering angle detection device 22 that electrically detects the relative rotation angle of both shafts 18 and 19a. 2. The work according to claim 1, in which the cylindrical shaft 19a is formed into a knuckle arm 19 for steering the front wheel 1, and the inner shaft 18 is formed by knuckle arm support shafts at both ends of the front axle case 16. Car gear shift operation structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20052186U JPH0414273Y2 (en) | 1986-12-23 | 1986-12-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20052186U JPH0414273Y2 (en) | 1986-12-23 | 1986-12-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63101226U true JPS63101226U (en) | 1988-07-01 |
| JPH0414273Y2 JPH0414273Y2 (en) | 1992-03-31 |
Family
ID=31163105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20052186U Expired JPH0414273Y2 (en) | 1986-12-23 | 1986-12-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0414273Y2 (en) |
-
1986
- 1986-12-23 JP JP20052186U patent/JPH0414273Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0414273Y2 (en) | 1992-03-31 |
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