JPH0478372U - - Google Patents
Info
- Publication number
- JPH0478372U JPH0478372U JP12179790U JP12179790U JPH0478372U JP H0478372 U JPH0478372 U JP H0478372U JP 12179790 U JP12179790 U JP 12179790U JP 12179790 U JP12179790 U JP 12179790U JP H0478372 U JPH0478372 U JP H0478372U
- Authority
- JP
- Japan
- Prior art keywords
- damping
- valve
- hydraulic
- damping bush
- bush
- 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)
- Fluid-Pressure Circuits (AREA)
Description
第１図はこの考案の１実施例の部分縦断面図、
第２図はカウンターバランスバルブの回路図、第
３図は従来技術に基づくカウンターバランスバル
ブ本体の部分縦断面図である。
９……カウンターバランスバルブ、４……油圧
ポンプ、３……アクチユエータ（油圧モータ）、
６……油圧回路、７……チエツクバルブ、８，８
′，８″……カウンターバランスバルブ本体、１
２′……ケーシング、１７′……ダンピング室、
１９″……バルブスプール、１１″……ダンピン
グスプリング、１９……ダンピングブツシユ、１
８……油圧通路、１４′……オリフイス。
FIG. 1 is a partial vertical sectional view of one embodiment of this invention.
FIG. 2 is a circuit diagram of a counterbalance valve, and FIG. 3 is a partial longitudinal cross-sectional view of a counterbalance valve body based on the prior art. 9... Counter balance valve, 4... Hydraulic pump, 3... Actuator (hydraulic motor),
6...Hydraulic circuit, 7...Check valve, 8,8
',8''... Counterbalance valve body, 1
2'...Casing, 17'...Dumping chamber,
19″... Valve spool, 11″... Damping spring, 19... Damping bush, 1
8... Hydraulic passage, 14'... Orifice.
Claims (1)
た油圧回路にチエツクバルブを併設したカウンタ
ーバランスバルブがそのケーシング内にバルブス
プールとこれに対向してダンピングスプリングに
被圧されたスライド自在なダンピングブツシユと
を装備されている構造において、該ダンピングブ
ツシユが上記バルブスプールに外挿されると共に
ケーシング内のダンピング室に内挿され、その前
部が圧油通路のオリフイスを開閉調節自在にされ
ていることを特徴とするカウンターバランスバル
ブ構造。 A counterbalance valve with a check valve attached to a hydraulic circuit connected to a hydraulic pump and a hydraulic actuator is equipped with a valve spool and a slidable damping bush opposite to it that is pressurized by a damping spring. In this structure, the damping bush is fitted onto the valve spool and inserted into the damping chamber in the casing, and the front part of the damping bush is adapted to open and close an orifice of the pressure oil passage. Counterbalance valve structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12179790U JP2559326Y2 (en) | 1990-11-22 | 1990-11-22 | Counterbalance valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12179790U JP2559326Y2 (en) | 1990-11-22 | 1990-11-22 | Counterbalance valve structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0478372U true JPH0478372U (en) | 1992-07-08 |
| JP2559326Y2 JP2559326Y2 (en) | 1998-01-14 |
Family
ID=31869630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12179790U Expired - Fee Related JP2559326Y2 (en) | 1990-11-22 | 1990-11-22 | Counterbalance valve structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2559326Y2 (en) |
-
1990
- 1990-11-22 JP JP12179790U patent/JP2559326Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2559326Y2 (en) | 1998-01-14 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |