JPS63195164U - - Google Patents
Info
- Publication number
- JPS63195164U JPS63195164U JP8697887U JP8697887U JPS63195164U JP S63195164 U JPS63195164 U JP S63195164U JP 8697887 U JP8697887 U JP 8697887U JP 8697887 U JP8697887 U JP 8697887U JP S63195164 U JPS63195164 U JP S63195164U
- Authority
- JP
- Japan
- Prior art keywords
- spool
- sub
- communication
- actuator port
- passage
- 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
Landscapes
- Multiple-Way Valves (AREA)
Description
図面第1図はこの考案の実施例を示す断面図、
第2図は従来の方向制御弁の断面図である。
1,2……アクチユエータポート、MS……メ
インスプール、SS……サブスプール、9……環
状溝、10……スプリング室、11……パイロツ
ト室、P……ポンプ、T……タンク、23……供
給通路、25……戻り通路、26……オリフイス
、27……連通孔。
Figure 1 is a sectional view showing an embodiment of this invention;
FIG. 2 is a sectional view of a conventional directional control valve. 1, 2... Actuator port, MS... Main spool, SS... Sub spool, 9... Annular groove, 10... Spring chamber, 11... Pilot chamber, P... Pump, T... Tank, 23... Supply passage, 25... Return passage, 26... Orifice, 27... Communication hole.
Claims (1)
クチユエータポートと、ポンプに常時連通する供
給通路と、タンクに常時連通する戻り通路とを形
成し、しかも、上記メインスプールに内装したサ
ブスプールは、その内側をパイロツト室に臨ませ
、外側をスプリング室に臨ませてなり、このサブ
スプールがノーマル位置にあるとき、一方のアク
チユエータポートと戻り通路との連通を遮断する
一方、メインスプールの一方の切り換え位置で、
他方のアクチユエータポートと供給通路とを連通
させるとともに、上記パイロツト室と供給通路と
を連通させてサブスプールを移動し、一方のアク
チユエータポートを、サブスプールの環状溝を経
由して戻り通路に連通させる構成にした方向制御
弁において、上記メインスプールに、一方のアク
チユエータポートとサブスプールの環状溝とを連
通させるオリフイスを形成するとともに、メイン
スプールが中立位置にあるとき、上記スプリング
室を戻り通路に連通させる連通孔を形成してなる
方向制御弁。 A pair of actuator ports, a supply passage that is always in communication with the pump, and a return passage that is always in communication with the tank are formed in the valve body that has the main spool inside, and the sub spool that is installed inside the main spool is Its inner side faces the pilot chamber, and its outer side faces the spring chamber. When this sub-spool is in the normal position, communication between one actuator port and the return passage is cut off, while one side of the main spool At the switching position,
The other actuator port communicates with the supply passage, and the pilot chamber and the supply passage communicate with each other to move the sub-spool, and one actuator port returns via the annular groove of the sub-spool. In the directional control valve configured to communicate with the passage, the main spool is formed with an orifice that communicates one actuator port with the annular groove of the sub spool, and when the main spool is in a neutral position, the spring A directional control valve formed with a communication hole that communicates a chamber with a return passage.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8697887U JPS63195164U (en) | 1987-06-04 | 1987-06-04 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8697887U JPS63195164U (en) | 1987-06-04 | 1987-06-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63195164U true JPS63195164U (en) | 1988-12-15 |
Family
ID=30943780
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8697887U Pending JPS63195164U (en) | 1987-06-04 | 1987-06-04 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63195164U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004084879A (en) * | 2002-08-28 | 2004-03-18 | Shin Caterpillar Mitsubishi Ltd | Control valve device |
KR20190067595A (en) * | 2017-12-07 | 2019-06-17 | 주식회사 두산 | Time delay valve for swivel motor |
-
1987
- 1987-06-04 JP JP8697887U patent/JPS63195164U/ja active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004084879A (en) * | 2002-08-28 | 2004-03-18 | Shin Caterpillar Mitsubishi Ltd | Control valve device |
KR20190067595A (en) * | 2017-12-07 | 2019-06-17 | 주식회사 두산 | Time delay valve for swivel motor |