JPS63150155U - - Google Patents
Info
- Publication number
- JPS63150155U JPS63150155U JP4311487U JP4311487U JPS63150155U JP S63150155 U JPS63150155 U JP S63150155U JP 4311487 U JP4311487 U JP 4311487U JP 4311487 U JP4311487 U JP 4311487U JP S63150155 U JPS63150155 U JP S63150155U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- operates
- electric motor
- hydraulic actuator
- amount
- 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
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000002706 hydrostatic effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Motor Power Transmission Devices (AREA)
- Control Of Fluid Gearings (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図は変速ペダルと変速操作軸と
の連係を示す説明図、第２図は要部断面図、第３
図はバルブスプールを操作した状態を示す断面図
、第４図は一部切欠き断面図、第５図は第４図の
―線矢視図、第６図は静油圧式無段変速装置
の油圧回路図、第７図は農用トラクタの全体側面
図である。
３……油圧アクチユエータ、４……バルブ、８
……静油圧式無段変速装置、９……電動モータ、
１０……速度設定器、１２……機械式サーボ機構
、１４……制御回路、１８……電気式サーボ機構
、２２……変速操作軸。
The drawings show an embodiment of the shift operation structure for a working vehicle according to the present invention, in which FIG. 1 is an explanatory diagram showing the connection between the shift pedal and the shift operation shaft, FIG. 2 is a sectional view of the main part, and FIG.
The figure is a sectional view showing the state in which the valve spool is operated, Fig. 4 is a partially cutaway sectional view, Fig. 5 is a view taken along the line - - in Fig. 4, and Fig. 6 is a hydrostatic continuously variable transmission. The hydraulic circuit diagram, FIG. 7, is an overall side view of the agricultural tractor. 3...Hydraulic actuator, 4...Valve, 8
...Hydrostatic continuously variable transmission, 9...Electric motor,
10... Speed setting device, 12... Mechanical servo mechanism, 14... Control circuit, 18... Electric servo mechanism, 22... Speed change operation axis.
Claims (1)
作する油圧アクチユエータ３と、この油圧アクチ
ユエータ３を作動させるバルブ４と、該バルブ４
を作動させる電動モータ９と、人為操作される速
度設定器１０からの指令に基づいて前記電動モー
タ９を駆動させる制御回路１４と、前記バルブ４
の操作量に応じて前記油圧アクチユエータ３の駆
動量を制御する機械式サーボ機構１２と、前記速
度設定器１０からの指令に基づいて前記電動モー
タ９の駆動量を制御する電気式サーボ機構１８と
を備えてある作業車の変速操作構造。 A hydraulic actuator 3 that operates the speed change operation shaft 22 of the hydrostatic continuously variable transmission 8, a valve 4 that operates the hydraulic actuator 3, and the valve 4.
an electric motor 9 that operates the valve 4; a control circuit 14 that drives the electric motor 9 based on a command from a speed setting device 10 that is manually operated;
a mechanical servo mechanism 12 that controls the amount of drive of the hydraulic actuator 3 according to the amount of operation; and an electric servo mechanism 18 that controls the amount of drive of the electric motor 9 based on a command from the speed setter 10. A gear shift operation structure for a work vehicle equipped with
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4311487U JPS63150155U (en) | 1987-03-24 | 1987-03-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4311487U JPS63150155U (en) | 1987-03-24 | 1987-03-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63150155U true JPS63150155U (en) | 1988-10-03 |
Family
ID=30859668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4311487U Pending JPS63150155U (en) | 1987-03-24 | 1987-03-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63150155U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008185188A (en) * | 2007-01-31 | 2008-08-14 | Iseki & Co Ltd | Transmission for hydraulic drive vehicle |
-
1987
- 1987-03-24 JP JP4311487U patent/JPS63150155U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008185188A (en) * | 2007-01-31 | 2008-08-14 | Iseki & Co Ltd | Transmission for hydraulic drive vehicle |
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