JPS5858154U - counter balance valve - Google Patents
counter balance valveInfo
- Publication number
- JPS5858154U JPS5858154U JP15335281U JP15335281U JPS5858154U JP S5858154 U JPS5858154 U JP S5858154U JP 15335281 U JP15335281 U JP 15335281U JP 15335281 U JP15335281 U JP 15335281U JP S5858154 U JPS5858154 U JP S5858154U
- Authority
- JP
- Japan
- Prior art keywords
- flow
- spool
- actuator
- flow path
- 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.)
- Granted
Links
Landscapes
- Safety Valves (AREA)
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
図面第１．２図は従来のカウンターバランスバルブを示
すもので、第１図はそれをクレーン等のシリンダに接続
した状態の回路図、第２図は断面図、第５．４図はこの
考案の１実施例を示すもので、第３図は第１図と同様の
回路図、第４図は断面図である。
１６・・・アクチェータたるシリンダ、２９・・・スプ
−／！／、３Ｇ・・・ダンパー室、３４・・・オリフィ
ス、３６・・・チェック弁、Ｐ・・・ポンプ、３５及び
３７・・・連通路を構成する連通孔及び油路。Figures 1.2 of the drawings show a conventional counterbalance valve, Figure 1 is a circuit diagram of it connected to a cylinder of a crane, etc., Figure 2 is a cross-sectional view, and Figure 5.4 shows this invention. FIG. 3 is a circuit diagram similar to FIG. 1, and FIG. 4 is a sectional view. 16...actuator cylinder, 29...spring/! /, 3G... Damper chamber, 34... Orifice, 36... Check valve, P... Pump, 35 and 37... Communication hole and oil path forming the communication path.
Claims (1)
えるとともに、この他方の流路においてポンプからアク
チェータへの流れに対してはフリーフローとし、アクチ
ェータからの戻り流に対してはコントロールフローとす
る構成にしたカウンターバランスバルブにおいて、前記
一方の流路のパイロット圧に応じて他方の流路を開閉し
てコントロールフローとするスプールと、このスプール
に形成され、かつポンプからの圧油を当該スプールのダ
ンパー室に導くオリフィスと、このダンパー室とアクチ
ェータに通じる前記他方の流路との間に形成した連通路
内に設けてアクチェータからのカウンタ圧が作用する関
係にするとともに、ダンパー室からの油の流出のみを許
容する関係にしたチェック弁とを備え、前記ダンパー室
内の圧が、当該チェック弁９ばね力及びそれに作用する
カウンタ圧に打ち勝ったとき、そのチェック弁を開いて
前記オリフィスに流れを発生させ、そのオリフィス前後
の差圧によって前記スプールが開き、フリーフローとす
る構成にしたカウンターバランスバルブ。One flow path leading to the actuator and the other flow path are provided, and in this other flow path, the flow from the pump to the actuator is free flow, and the return flow from the actuator is controlled flow. The counterbalance valve has a spool that opens and closes the other flow path according to the pilot pressure of the one flow path to create a controlled flow, and a spool that is formed on the spool and that transmits pressure oil from the pump to the spool. An orifice leading to the damper chamber is provided in a communication path formed between the damper chamber and the other flow path leading to the actuator, so that the counter pressure from the actuator acts on it, and the oil from the damper chamber is removed. and a check valve configured to allow only outflow, and when the pressure in the damper chamber overcomes the spring force of the check valve 9 and the counter pressure acting thereon, the check valve is opened to generate a flow in the orifice. The counterbalance valve is configured such that the spool is opened by a pressure difference before and after the orifice, and a free flow is created.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15335281U JPS5858154U (en) | 1981-10-15 | 1981-10-15 | counter balance valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15335281U JPS5858154U (en) | 1981-10-15 | 1981-10-15 | counter balance valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5858154U true JPS5858154U (en) | 1983-04-20 |
| JPS6128531Y2 JPS6128531Y2 (en) | 1986-08-23 |
Family
ID=29945971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15335281U Granted JPS5858154U (en) | 1981-10-15 | 1981-10-15 | counter balance valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5858154U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5250419U (en) * | 1975-10-07 | 1977-04-11 | ||
| JPS55631A (en) * | 1978-06-16 | 1980-01-07 | Toshiba Corp | Industrial television camera |
-
1981
- 1981-10-15 JP JP15335281U patent/JPS5858154U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5250419U (en) * | 1975-10-07 | 1977-04-11 | ||
| JPS55631A (en) * | 1978-06-16 | 1980-01-07 | Toshiba Corp | Industrial television camera |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6128531Y2 (en) | 1986-08-23 |
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