JPS63174609U - - Google Patents
Info
- Publication number
- JPS63174609U JPS63174609U JP19383886U JP19383886U JPS63174609U JP S63174609 U JPS63174609 U JP S63174609U JP 19383886 U JP19383886 U JP 19383886U JP 19383886 U JP19383886 U JP 19383886U JP S63174609 U JPS63174609 U JP S63174609U
- Authority
- JP
- Japan
- Prior art keywords
- relief
- hydraulic
- hydraulic actuator
- valve
- lifts
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Lifting Devices For Agricultural Implements (AREA)
Description
図面は本考案に係る農用トラクタの油圧装置の
実施例を示し、第１図は農用トラクタの全体側面
図、第２図は一部切欠き正面図、第３図は油圧回
路を示す図、第４図はリリーフ圧切り換え機構の
概略図である。
２……付設作業装置、４……第１油圧アクチユ
エータ、５……制御バルブ、７……付設作業装置
、９……第２油圧アクチユエータ、１０……制御
バルブ、１２……油圧ポンプ、１４……リリーフ
バルブ、１５……タイマー、１６……リリーフ機
構。
The drawings show an embodiment of the hydraulic system for an agricultural tractor according to the present invention, in which Fig. 1 is an overall side view of the agricultural tractor, Fig. 2 is a partially cutaway front view, Fig. 3 is a diagram showing a hydraulic circuit, and Fig. FIG. 4 is a schematic diagram of the relief pressure switching mechanism. 2... Attached working device, 4... First hydraulic actuator, 5... Control valve, 7... Attached working device, 9... Second hydraulic actuator, 10... Control valve, 12... Hydraulic pump, 14... ...Relief valve, 15...Timer, 16...Relief mechanism.
Claims (1)
ユエータ４に対する制御バルブ５と、別の付設作
業装置７を昇降操作する第２油圧アクチユエータ
９に対する制御バルブ１０とを油圧ポンプ１２対
して直列に接続するとともに、前記油圧ポンプ１
２と、上手側の第１油圧アクチユエータ４との間
にリリーフバルブ１４を備えてある農用トラクタ
の油圧装置であつて、前記リリーフバルブ１４の
リリーフ圧を可変に構成し、且つ人為指令により
起動されるタイマー１５を介して設定時間だけリ
リーフ圧を常態より高圧に切り換え保持するリリ
ーフ圧切り換え機構１６を装備してある農用トラ
クタの油圧装置。 A control valve 5 for a first hydraulic actuator 4 that lifts and lowers an attached work device 2 and a control valve 10 for a second hydraulic actuator 9 that lifts and lowers another attached work device 7 are connected in series to a hydraulic pump 12. , the hydraulic pump 1
2 and a first hydraulic actuator 4 on the upper side, the hydraulic system for an agricultural tractor is provided with a relief valve 14, and the relief pressure of the relief valve 14 is configured to be variable, and the relief valve 14 is configured to be activated by a human command. This hydraulic system for an agricultural tractor is equipped with a relief pressure switching mechanism 16 that switches and maintains the relief pressure to a higher pressure than normal for a set time via a timer 15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19383886U JPS63174609U (en) | 1986-12-16 | 1986-12-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19383886U JPS63174609U (en) | 1986-12-16 | 1986-12-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63174609U true JPS63174609U (en) | 1988-11-14 |
Family
ID=31150238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19383886U Pending JPS63174609U (en) | 1986-12-16 | 1986-12-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63174609U (en) |
-
1986
- 1986-12-16 JP JP19383886U patent/JPS63174609U/ja active Pending