JPS63132102U - - Google Patents
Info
- Publication number
- JPS63132102U JPS63132102U JP2378787U JP2378787U JPS63132102U JP S63132102 U JPS63132102 U JP S63132102U JP 2378787 U JP2378787 U JP 2378787U JP 2378787 U JP2378787 U JP 2378787U JP S63132102 U JPS63132102 U JP S63132102U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- valve
- hydraulic pilot
- pilot
- 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
- 230000007935 neutral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Fluid-Pressure Circuits (AREA)
Description
第１図〜第３図は本考案の実施例を示し、第１
図および第３図はそれぞれ第１および第２の実施
例における油圧回路図、第２図ａはクイツクエク
ゾーストバルブの断面図、第２図ｂはその拡大図
、第２図ｃは等価油圧回路図である。第４図は第
１図に相当する従来例を示す図である。
２：操作系油圧ポンプ、３，１１：油圧パイロ
ツト弁、５：油圧パイロツト方式方向切換弁、５
ａ，５ｂ：切換手段、１９，２０：電磁式方向切
換弁、５０ａ，５０ｂ：クイツクエクゾーストバ
ルブ。
Figures 1 to 3 show embodiments of the present invention;
3 and 3 are hydraulic circuit diagrams of the first and second embodiments, respectively, FIG. 2a is a sectional view of the quick exhaust valve, FIG. 2b is an enlarged view thereof, and FIG. 2c is an equivalent hydraulic circuit. It is a diagram. FIG. 4 is a diagram showing a conventional example corresponding to FIG. 1. 2: Operation system hydraulic pump, 3, 11: Hydraulic pilot valve, 5: Hydraulic pilot type directional control valve, 5
a, 5b: switching means, 19, 20: electromagnetic directional valve, 50a, 50b: quick exhaust valve.
Claims (1)
た油圧パイロツト式方向切換弁を油圧パイロツト
弁からの圧油で切換えるようにした油圧パイロツ
ト操作回路において、 前記油圧パイロツト弁が操作されるとその圧力
を前記方向切換弁のパイロツトポートに伝え、前
記油圧パイロツト弁が中立に操作されると前記パ
イロツトポートの圧力をタンク側へ逃す切換手段
を前記油圧パイロツト弁と前記方向切換弁との間
に設けたことを特徴とする油圧パイロツト操作回
路。[Scope of Claim for Utility Model Registration] A hydraulic pilot operating circuit in which a hydraulic pilot type directional control valve provided between a hydraulic power source and a hydraulic actuator is switched by pressure oil from the hydraulic pilot valve, wherein the hydraulic pilot valve is A switching means is provided between the hydraulic pilot valve and the directional switching valve, which transmits the pressure to the pilot port of the directional switching valve when operated, and releases the pressure of the pilot port to the tank side when the hydraulic pilot valve is operated to a neutral position. A hydraulic pilot operating circuit characterized by being provided between.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2378787U JPS63132102U (en) | 1987-02-20 | 1987-02-20 | |
| PCT/JP1988/000166 WO1988006241A1 (en) | 1987-02-20 | 1988-02-18 | Pilot-operated hydraulic circuit and hydraulic quick exhaust valve |
| US07/265,457 US5081905A (en) | 1987-02-20 | 1988-02-18 | Hydraulic pilot operation circuit and valve for quickly discharging oil |
| DE19883890121 DE3890121C2 (en) | 1987-02-20 | 1988-02-18 | Hydraulic quick-exhaust control valve |
| DE883890121T DE3890121T1 (en) | 1987-02-20 | 1988-02-18 | HYDRAULIC REMOTE CONTROL CIRCUIT AND QUICK OIL DRAIN VALVE |
| AU12979/88A AU619457B2 (en) | 1987-02-20 | 1988-02-18 | Pilot-operated hydraulic circuit and hydraulic quick exhaust valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2378787U JPS63132102U (en) | 1987-02-20 | 1987-02-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63132102U true JPS63132102U (en) | 1988-08-30 |
Family
ID=30822408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2378787U Pending JPS63132102U (en) | 1987-02-20 | 1987-02-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63132102U (en) |
-
1987
- 1987-02-20 JP JP2378787U patent/JPS63132102U/ja active Pending
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