JPS58176170U - Construction machinery hydraulic circuit - Google Patents
Construction machinery hydraulic circuitInfo
- Publication number
- JPS58176170U JPS58176170U JP7141182U JP7141182U JPS58176170U JP S58176170 U JPS58176170 U JP S58176170U JP 7141182 U JP7141182 U JP 7141182U JP 7141182 U JP7141182 U JP 7141182U JP S58176170 U JPS58176170 U JP S58176170U
- Authority
- JP
- Japan
- Prior art keywords
- steering
- flow rate
- pump
- valve
- discharge
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
図面はこの考案の一実施例を示す回路図である。
１はステアリングポンプ、２は作業機ポンプ、３はデマ
ンドバルブ、６はエンジン、７はプライオリティバルブ
、１０は作業機シリンダ、１１はステアリング回路、１
２はステアリング制御弁、１３はステアリングシリンダ
、１４はアンロード弁。The drawing is a circuit diagram showing an embodiment of this invention. 1 is a steering pump, 2 is a work machine pump, 3 is a demand valve, 6 is an engine, 7 is a priority valve, 10 is a work machine cylinder, 11 is a steering circuit, 1
2 is a steering control valve, 13 is a steering cylinder, and 14 is an unload valve.
Claims (1)
ステアリングポンプ１の吐出流量に応答して、エンジン
６の低速回転時作業機ポンプ２の吐出流量をステアリン
グポンプ１の吐出流量に合流するデマンドバルブ３を設
け、上記デマンドバルブ３を出たステアリング流量は、
ステアリング回路１１に設けたステアリング制御弁１２
からの信号により、ステアリングに必要な流量をステア
リングシリンダ１３へ供給するプライ１リテイバルブ７
へ流入させ、またデマンド−バルブ３を出た作業機流量
は、ステアリング操作をしないときに上記プライオリテ
ィバルブ７より流出するステアリング流量と合流させて
作業機シリンダ１０へ供給すると共に、上記作業機ポン
プ２の吐出側に、作業機流量が予め設定し−たセットａ
２を越えたとき開放して、作業機ポンプ２の吐出流量を
ドレンするアンロード弁１４を設けてなる建設機械の油
圧回路。 ゛On the discharge side of the steering pump 1 and the work equipment pump 2,
In response to the discharge flow rate of the steering pump 1, a demand valve 3 is provided which merges the discharge flow rate of the work equipment pump 2 with the discharge flow rate of the steering pump 1 when the engine 6 rotates at low speed, and the steering flow rate leaving the demand valve 3 is ,
Steering control valve 12 provided in the steering circuit 11
The ply 1 retention valve 7 supplies the flow rate necessary for steering to the steering cylinder 13 according to a signal from
The work machine flow rate flowing into the work machine cylinder 10 and flowing out of the demand valve 3 is combined with the steering flow rate flowing out from the priority valve 7 when no steering operation is performed, and is supplied to the work machine cylinder 10. On the discharge side of
This hydraulic circuit for construction machinery is provided with an unload valve 14 that opens when the flow rate exceeds 2 and drains the discharge flow rate of a working machine pump 2.゛
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7141182U JPS58176170U (en) | 1982-05-18 | 1982-05-18 | Construction machinery hydraulic circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7141182U JPS58176170U (en) | 1982-05-18 | 1982-05-18 | Construction machinery hydraulic circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58176170U true JPS58176170U (en) | 1983-11-25 |
| JPH0227010Y2 JPH0227010Y2 (en) | 1990-07-23 |
Family
ID=30081028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7141182U Granted JPS58176170U (en) | 1982-05-18 | 1982-05-18 | Construction machinery hydraulic circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58176170U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5771412A (en) * | 1980-10-17 | 1982-05-04 | Avtex Fibers Inc | Viscose rayon and production thereof |
-
1982
- 1982-05-18 JP JP7141182U patent/JPS58176170U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5771412A (en) * | 1980-10-17 | 1982-05-04 | Avtex Fibers Inc | Viscose rayon and production thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0227010Y2 (en) | 1990-07-23 |
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