JPH0312005U - - Google Patents
Info
- Publication number
- JPH0312005U JPH0312005U JP6909789U JP6909789U JPH0312005U JP H0312005 U JPH0312005 U JP H0312005U JP 6909789 U JP6909789 U JP 6909789U JP 6909789 U JP6909789 U JP 6909789U JP H0312005 U JPH0312005 U JP H0312005U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- pilot
- switching valve
- valve
- tank port
- 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
- 230000007935 neutral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
Landscapes
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Description
第１図は本考案の油圧回路図、第２図は要部断
面図、第３図は従来公知の油圧回路の一般的な回
路図である。
１……油圧パイロツト弁、２……油圧パイロツ
ト切換弁、３，４……パイロツト管路、５……可
動弁体、６……フイルタ、７……可変容量ポンプ
、８，９……通路、Ｔ……タンク、Ｔ１……タン
クポート、Ｔ２……タンク管路。
FIG. 1 is a hydraulic circuit diagram of the present invention, FIG. 2 is a sectional view of essential parts, and FIG. 3 is a general circuit diagram of a conventionally known hydraulic circuit. DESCRIPTION OF SYMBOLS 1... Hydraulic pilot valve, 2... Hydraulic pilot switching valve, 3, 4... Pilot pipe line, 5... Movable valve body, 6... Filter, 7... Variable displacement pump, 8, 9... Passage, T...tank, T1 ...tank port, T2 ...tank pipe line.
Claims (1)
パイロツト管路によつて接続した油圧回路におい
て、前記油圧パイロツト切換弁のタンクポートを
該切換弁の可動弁体が中立位置にあるときのみ連
通する通路を介してパイロツト管路に接続したこ
とを特徴とする油圧シヨベル等の油圧回路。 In a hydraulic circuit in which a hydraulic pilot valve and a hydraulic pilot switching valve are connected by a pilot pipe, the tank port of the hydraulic pilot switching valve is connected to the tank port of the hydraulic pilot switching valve through a passage that communicates only when the movable valve body of the switching valve is in a neutral position. A hydraulic circuit for a hydraulic excavator, etc., characterized in that it is connected to a pilot pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6909789U JPH0312005U (en) | 1989-06-15 | 1989-06-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6909789U JPH0312005U (en) | 1989-06-15 | 1989-06-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0312005U true JPH0312005U (en) | 1991-02-07 |
Family
ID=31604108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6909789U Pending JPH0312005U (en) | 1989-06-15 | 1989-06-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0312005U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002034764A (en) * | 2000-07-28 | 2002-02-05 | Kojima Iryo:Kk | Hanger rack |
| JP2022071746A (en) * | 2020-10-28 | 2022-05-16 | 株式会社クボタ | Hydraulic system for work machine |
-
1989
- 1989-06-15 JP JP6909789U patent/JPH0312005U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002034764A (en) * | 2000-07-28 | 2002-02-05 | Kojima Iryo:Kk | Hanger rack |
| JP2022071746A (en) * | 2020-10-28 | 2022-05-16 | 株式会社クボタ | Hydraulic system for work machine |