JPS63189923U - - Google Patents
Info
- Publication number
- JPS63189923U JPS63189923U JP8332787U JP8332787U JPS63189923U JP S63189923 U JPS63189923 U JP S63189923U JP 8332787 U JP8332787 U JP 8332787U JP 8332787 U JP8332787 U JP 8332787U JP S63189923 U JPS63189923 U JP S63189923U
- Authority
- JP
- Japan
- Prior art keywords
- drive
- speed
- clutch
- control valve
- transmission
- 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 7
- 239000010720 hydraulic oil Substances 0.000 claims 2
- 238000007599 discharging Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 claims 1
Landscapes
- Arrangement And Driving Of Transmission Devices (AREA)
Description
図面は本考案に係る四輪駆動型作業車の実施例
を示し、第１図は制御弁の構造を示す横断平面図
、第２図は制御弁が取付けられたパワーステアリ
ングユニツト周りの側面図、第３図は前輪変速装
置の縦断側面図、第４図は農用トラクタの全体側
面図である。
１……前輪、１０……前輪変速装置、１９……
増速駆動系の油圧クラツチ、２３……回動軸、２
４……ピツトマンアーム、２６……制御弁、２６
ａ……制御弁のローター。
The drawings show an embodiment of a four-wheel-drive work vehicle according to the present invention, in which Fig. 1 is a cross-sectional plan view showing the structure of the control valve, Fig. 2 is a side view of the area around the power steering unit to which the control valve is attached, FIG. 3 is a longitudinal sectional side view of the front wheel transmission, and FIG. 4 is an overall side view of the agricultural tractor. 1...Front wheel, 10...Front wheel transmission, 19...
Hydraulic clutch of speed-increasing drive system, 23...Rotation shaft, 2
4... Pitman arm, 26... Control valve, 26
a...Control valve rotor.
Claims (1)
に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なクラツチ式の前輪変速装
置１０を備えると共に、前記前輪変速装置１０に
おける増速駆動系のクラツチが多板式の油圧クラ
ツチ１９である四輪駆動型作業車であつて、前記
増速駆動系の油圧クラツチ１９に対して作動油の
給排操作を行うロータリー式の制御弁２６を備え
ると共に、前輪操向用のピツトマンアーム２４の
回動軸２３に前記制御弁２６のローター２６ａを
同芯状に連設し、且つ、直進状態から設定角度以
上の操向操作により前記油圧クラツチ１９に作動
油供給されクラツチ入り状態となるように、前記
制御弁２６の内部油路を形成してある四輪駆動型
作業車。 A standard drive state in which the transmission system to the steerable front wheels 1 is transmitted at a drive speed approximately equal to the rear wheel drive speed;
The front wheel transmission 10 is equipped with a clutch type front wheel transmission device 10 that can be switched to a speed increasing drive state in which transmission is performed at a drive speed greater than the rear wheel drive speed, and the clutch of the speed increasing drive system in the front wheel transmission 10 is a multi-disc hydraulic clutch 19. This is a four-wheel drive type work vehicle, which is equipped with a rotary control valve 26 for supplying and discharging hydraulic oil to the hydraulic clutch 19 of the speed-increasing drive system, and a pitman arm 24 for steering the front wheels. The rotor 26a of the control valve 26 is concentrically connected to the rotating shaft 23, and hydraulic oil is supplied to the hydraulic clutch 19 by steering operation beyond a set angle from a straight-ahead state, and the clutch is engaged. , a four-wheel drive working vehicle in which an internal oil passage for the control valve 26 is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8332787U JPH061466Y2 (en) | 1987-05-29 | 1987-05-29 | Four-wheel drive work vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8332787U JPH061466Y2 (en) | 1987-05-29 | 1987-05-29 | Four-wheel drive work vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63189923U true JPS63189923U (en) | 1988-12-07 |
| JPH061466Y2 JPH061466Y2 (en) | 1994-01-12 |
Family
ID=30936813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8332787U Expired - Lifetime JPH061466Y2 (en) | 1987-05-29 | 1987-05-29 | Four-wheel drive work vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH061466Y2 (en) |
-
1987
- 1987-05-29 JP JP8332787U patent/JPH061466Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH061466Y2 (en) | 1994-01-12 |
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