JPH0461154U - - Google Patents
Info
- Publication number
- JPH0461154U JPH0461154U JP10217790U JP10217790U JPH0461154U JP H0461154 U JPH0461154 U JP H0461154U JP 10217790 U JP10217790 U JP 10217790U JP 10217790 U JP10217790 U JP 10217790U JP H0461154 U JPH0461154 U JP H0461154U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- pressure oil
- operation valve
- work machine
- steering
- 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
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Description
第１図は本考案の第１実施例を示す油圧回路図
、第２図は制御弁の変形例を示すブロツク図、第
３図は第２実施例の油圧回路図である。
Ｐ１は第１油圧ポンプ（第１の油圧ポンプ）、
Ｐ２，Ｐ３は第２、第３油圧ポンプ（第２の油圧
ポンプ）、２は作業機用操作弁、３は作業機用ア
クチユエータ、６はデマンドバルブ、７はステア
リング用操作弁、８は応援回路、９はステアリン
グ用アクチユエータ、１０は追加操作弁、１１は
弁本体、１２は入口ポート、１４は主回路、１５
は出口ポート、１６はドレーンポート、１７はカ
ツトオフ弁。
FIG. 1 is a hydraulic circuit diagram showing a first embodiment of the present invention, FIG. 2 is a block diagram showing a modification of the control valve, and FIG. 3 is a hydraulic circuit diagram of a second embodiment. P1 is a first hydraulic pump (first hydraulic pump),
P 2 and P 3 are second and third hydraulic pumps (second hydraulic pumps), 2 is a work machine operation valve, 3 is a work machine actuator, 6 is a demand valve, 7 is a steering operation valve, and 8 is a work machine operation valve. Support circuit, 9 is a steering actuator, 10 is an additional operation valve, 11 is a valve body, 12 is an inlet port, 14 is a main circuit, 15
is an outlet port, 16 is a drain port, and 17 is a cut-off valve.
Claims (1)
２で作業機用アタツチメント３に供給制御し、第
２の油圧ポンプの吐出圧油をデマンドバルブ６で
ステアリング用操作弁７と応援回路８に供給制御
し、そのステアリング用操作弁７でステアリング
用アクチユエータ９に圧油を供給制御する油圧回
路において、 弁本体１１に、入口ポート１２と出口ポート１
５を連通する主油路１４及びその主油路１４をド
レーンポート１６に連通・遮断するカツトオフ弁
１７を設けた追加操作弁１０を設け、この追加操
作弁１０の入口ポート１２を前記応援回路８に接
続し、出口ポート１５を第１の油圧ポンプの吐出
路に接続したことを特徴とする油圧回路。[Scope of Claim for Utility Model Registration] The pressure oil discharged from the first hydraulic pump is controlled to be supplied to the attachment 3 for the work machine using the operation valve 2 for the work machine, and the pressure oil discharged from the second hydraulic pump is controlled to be supplied to the work machine attachment 3 using the demand valve 6 for steering. In the hydraulic circuit that controls the supply of pressure oil to the steering operation valve 7 and the support circuit 8, and the steering operation valve 7 controls the supply of pressure oil to the steering actuator 9, the valve body 11 has an inlet port 12 and an outlet port 1.
An additional operation valve 10 is provided, which includes a main oil passage 14 that communicates with the drain port 16 and a cut-off valve 17 that connects and blocks the main oil passage 14 with the drain port 16. A hydraulic circuit characterized in that the outlet port 15 is connected to a discharge path of a first hydraulic pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10217790U JP2507123Y2 (en) | 1990-10-01 | 1990-10-01 | Hydraulic circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10217790U JP2507123Y2 (en) | 1990-10-01 | 1990-10-01 | Hydraulic circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0461154U true JPH0461154U (en) | 1992-05-26 |
| JP2507123Y2 JP2507123Y2 (en) | 1996-08-14 |
Family
ID=31846205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10217790U Expired - Fee Related JP2507123Y2 (en) | 1990-10-01 | 1990-10-01 | Hydraulic circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2507123Y2 (en) |
-
1990
- 1990-10-01 JP JP10217790U patent/JP2507123Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2507123Y2 (en) | 1996-08-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |