JPH0196341U - - Google Patents
Info
- Publication number
- JPH0196341U JPH0196341U JP19311487U JP19311487U JPH0196341U JP H0196341 U JPH0196341 U JP H0196341U JP 19311487 U JP19311487 U JP 19311487U JP 19311487 U JP19311487 U JP 19311487U JP H0196341 U JPH0196341 U JP H0196341U
- Authority
- JP
- Japan
- Prior art keywords
- front wheel
- view
- sensor
- high speed
- solenoid valve
- 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 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Control Of Transmission Device (AREA)
- Arrangement And Driving Of Transmission Devices (AREA)
Description
図面は本考案の一実施例を示すものであつて、
第１図は切角検出装置の平面図、第２図は同上側
面図、第３図は制御回路図、第４図は走行変速操
作部の斜視図、第５図は人為操作装置の側面図、
第６図は油圧回路図、第７図はパワステアリング
油圧シリンダ取付部の分解斜視図、第８図は切角
センサーの分解斜視図、第９図は前輪駆動装置の
展開断面図、第１０図は切換装置の部分断面図、
第１１図は切換装置の横断面図、第１２図はクラ
ツチ部の断面図、第１３―１図、第１３―２図及
び第１３―３図は制御弁の作用を示す断面図、第
１４図は油圧クラツチの部分断面図、第１５図は
伝動系統図、第１６図は農用トラクタの側面図で
ある。
１１……差動装置、２４……前輪駆動軸、２５
……ブレーキ軸、２７……後部ミツシヨン、３２
……サポート、４０……ピストン、５３……シフ
トレール、６９……フオーク、７３……スプール
部、８６，８８……凹凸爪、８９……巻きスプリ
ング、９９……操作レバー、１１２……増速待機
位置センサー、１１４……高速センサー、１１５
……切角センサー、ａ……電磁弁。
The drawings show one embodiment of the present invention,
Fig. 1 is a plan view of the turning angle detection device, Fig. 2 is a side view of the same as above, Fig. 3 is a control circuit diagram, Fig. 4 is a perspective view of the traveling speed change operation section, and Fig. 5 is a side view of the manual operation device. ,
Figure 6 is a hydraulic circuit diagram, Figure 7 is an exploded perspective view of the power steering hydraulic cylinder mounting section, Figure 8 is an exploded perspective view of the turning angle sensor, Figure 9 is an exploded sectional view of the front wheel drive system, and Figure 10. is a partial sectional view of the switching device,
Fig. 11 is a cross-sectional view of the switching device, Fig. 12 is a sectional view of the clutch portion, Figs. 13-1, 13-2, and 13-3 are sectional views showing the operation of the control valve, and Fig. 14 The figure is a partial sectional view of the hydraulic clutch, FIG. 15 is a transmission system diagram, and FIG. 16 is a side view of the agricultural tractor. 11...Differential device, 24...Front wheel drive shaft, 25
... Brake shaft, 27 ... Rear transmission, 32
... Support, 40 ... Piston, 53 ... Shift rail, 69 ... Fork, 73 ... Spool part, 86, 88 ... Uneven pawl, 89 ... Winding spring, 99 ... Operation lever, 112 ... Increase High speed standby position sensor, 114...High speed sensor, 115
...Angle sensor, a...Solenoid valve.
Claims (1)
動型農用トラクタにおいて、前記前輪増速装置を
油圧により切換操作するように構成すると共にそ
の油圧回路に制御弁として電磁弁ａを挿入し、該
電磁弁ａの制御回路に、前輪の切角センサー１１
５と、走行変速の高速位置を検出する常閉型の高
速センサー１１４と、前輪駆動切換手段の増速待
機位置センサー１１２とを直列に挿入したことを
特徴とする四輪駆動型農用トラクタの安全装置。 A four-wheel drive agricultural tractor having a front wheel speed increaser installed in a front wheel transmission system, wherein the front wheel speed increaser is configured to be switched by hydraulic pressure, and a solenoid valve a is inserted as a control valve into the hydraulic circuit. , a front wheel turning angle sensor 11 is included in the control circuit of the solenoid valve a.
5, a normally closed type high speed sensor 114 for detecting the high speed position of the travel gear change, and a speed increase standby position sensor 112 of the front wheel drive switching means are inserted in series. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987193114U JPH0627467Y2 (en) | 1987-12-20 | 1987-12-20 | Four-wheel drive agricultural tractor safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987193114U JPH0627467Y2 (en) | 1987-12-20 | 1987-12-20 | Four-wheel drive agricultural tractor safety device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0196341U true JPH0196341U (en) | 1989-06-27 |
| JPH0627467Y2 JPH0627467Y2 (en) | 1994-07-27 |
Family
ID=31483931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987193114U Expired - Lifetime JPH0627467Y2 (en) | 1987-12-20 | 1987-12-20 | Four-wheel drive agricultural tractor safety device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0627467Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002156035A (en) * | 2000-11-20 | 2002-05-31 | Yanmar Agricult Equip Co Ltd | Forward-backward movement switching device of working vehicle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6076475A (en) * | 1983-10-03 | 1985-04-30 | Kubota Ltd | Control arrangement for agricultural tractor |
| JPS62101531A (en) * | 1985-10-28 | 1987-05-12 | Kubota Ltd | Travel transmission structure for agricultural tractor |
| JPH0195438U (en) * | 1987-12-18 | 1989-06-23 |
-
1987
- 1987-12-20 JP JP1987193114U patent/JPH0627467Y2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6076475A (en) * | 1983-10-03 | 1985-04-30 | Kubota Ltd | Control arrangement for agricultural tractor |
| JPS62101531A (en) * | 1985-10-28 | 1987-05-12 | Kubota Ltd | Travel transmission structure for agricultural tractor |
| JPH0195438U (en) * | 1987-12-18 | 1989-06-23 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002156035A (en) * | 2000-11-20 | 2002-05-31 | Yanmar Agricult Equip Co Ltd | Forward-backward movement switching device of working vehicle |
| JP4610071B2 (en) * | 2000-11-20 | 2011-01-12 | ヤンマー株式会社 | Forward / reverse switching device for work vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0627467Y2 (en) | 1994-07-27 |