JPS63180470U - - Google Patents
Info
- Publication number
- JPS63180470U JPS63180470U JP7219187U JP7219187U JPS63180470U JP S63180470 U JPS63180470 U JP S63180470U JP 7219187 U JP7219187 U JP 7219187U JP 7219187 U JP7219187 U JP 7219187U JP S63180470 U JPS63180470 U JP S63180470U
- Authority
- JP
- Japan
- Prior art keywords
- auxiliary
- pump
- discharge
- pipe
- pressure
- 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 3
Landscapes
- Fluid-Pressure Circuits (AREA)
Description
第１図は本考案の実施例を示す油圧回路図、第
２図はシーケンス弁の制御特性図、第３図はパイ
ロツト切替弁の切替え特性図である。
１……主ポンプ、２……補助ポンプ、３……エ
ンジン、４……主ポンプの吐出管路、５……ステ
アリングハンドル、６……操向操作弁、７……ス
テアリングシリンダ、８……シーケンス弁、９…
…補助ポンプの吐出管路、１０……パイロツト切
替弁、１２……非常用管路、１３……補助管路、
１４……キヤビンクーラ、１５……オイルクーラ
、１６……アクチユエータ。
FIG. 1 is a hydraulic circuit diagram showing an embodiment of the present invention, FIG. 2 is a control characteristic diagram of a sequence valve, and FIG. 3 is a switching characteristic diagram of a pilot switching valve. DESCRIPTION OF SYMBOLS 1... Main pump, 2... Auxiliary pump, 3... Engine, 4... Main pump discharge pipe, 5... Steering handle, 6... Steering operation valve, 7... Steering cylinder, 8... Sequence valve, 9...
...Auxiliary pump discharge pipe line, 10...Pilot switching valve, 12...Emergency pipe line, 13...Auxiliary pipe line,
14...cabin cooler, 15...oil cooler, 16...actuator.
Claims (1)
ンプとを備え、主ポンプの吐出管路に操向操作弁
を介して操向シリンダが接続され、補助ポンプの
吐出管路にパイロツト切替弁を介して上記主ポン
プの吐出管路に合流する非常用管路と、補助油圧
機器に圧油を供給する補助管路とが切替自在に接
続され、上記パイロツト切替弁は、主ポンプの吐
出管路の圧力が設定値以下の時に補助ポンプの吐
出管路を非常用管路に、設定値より高圧の時に補
助ポンプの吐出管路を補助管路に接続するように
構成されていることを特徴とする非常用操向油圧
制御装置。 It is equipped with a main pump and an auxiliary pump driven by an engine, a steering cylinder is connected to the main pump's discharge line via a steering operation valve, and a steering cylinder is connected to the auxiliary pump's discharge line via a pilot switching valve. An emergency pipe line that merges with the discharge pipe line of the main pump and an auxiliary pipe line that supplies pressure oil to the auxiliary hydraulic equipment are switchably connected, and the pilot switching valve controls the pressure of the main pump discharge pipe line. The emergency pump is configured to connect the discharge pipe of the auxiliary pump to the emergency pipe when the pressure is below a set value, and to connect the discharge pipe of the auxiliary pump to the auxiliary pipe when the pressure is higher than the set value. Steering hydraulic control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7219187U JPS63180470U (en) | 1987-05-14 | 1987-05-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7219187U JPS63180470U (en) | 1987-05-14 | 1987-05-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63180470U true JPS63180470U (en) | 1988-11-22 |
Family
ID=30915428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7219187U Pending JPS63180470U (en) | 1987-05-14 | 1987-05-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63180470U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005016722A1 (en) * | 2003-08-19 | 2005-02-24 | Hitachi, Ltd. | Power steering device and method of controlling the power steering device |
| JP2013151258A (en) * | 2012-01-26 | 2013-08-08 | Isuzu Motors Ltd | Power steering system, vehicle, and method of controlling the same |
-
1987
- 1987-05-14 JP JP7219187U patent/JPS63180470U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005016722A1 (en) * | 2003-08-19 | 2005-02-24 | Hitachi, Ltd. | Power steering device and method of controlling the power steering device |
| JP2013151258A (en) * | 2012-01-26 | 2013-08-08 | Isuzu Motors Ltd | Power steering system, vehicle, and method of controlling the same |
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