JPS58146167U - double counterbalance valve - Google Patents
double counterbalance valveInfo
- Publication number
- JPS58146167U JPS58146167U JP4187682U JP4187682U JPS58146167U JP S58146167 U JPS58146167 U JP S58146167U JP 4187682 U JP4187682 U JP 4187682U JP 4187682 U JP4187682 U JP 4187682U JP S58146167 U JPS58146167 U JP S58146167U
- Authority
- JP
- Japan
- Prior art keywords
- spool
- ports
- counterbalance valve
- damping
- pressure receiving
- 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
Landscapes
- Safety Valves (AREA)
- Fluid-Pressure Circuits (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図は従来の断面図、第２及び３図はこの考案の
第１実施例の断面図及び回路図、第４及び５図は第２実
施例の断面図及び回路図、第６及び７図は第３実施例の
断面図及び回路図、第８及び９図は第４実施例の断面図
及び回路図、第１０及び１１図は第５実施例の断面図及
び回路図、第１２及び１３図は第６実施例の断面図及び
回路図である。
１６・・・弁本体、１７．１８・・・Ｐポート、１９゜
２０・・・Ｍポート、２１・・・スプール、２２．２３
・・・ダンピング室、２６，２７，５４，６５．７４・
・・連通路、２Ｂ、 ２９． ５５． ５６・・・ダ
ンパオリフィス、３０，３１，５２，５３，５９．６０
・・・小ピストン、３４．３５・・・受圧面、３６．３
７・・・パイロット圧室。Figure 1 is a conventional sectional view, Figures 2 and 3 are sectional views and circuit diagrams of the first embodiment of this invention, Figures 4 and 5 are sectional views and circuit diagrams of the second embodiment, and Figures 6 and 5 are sectional views of the second embodiment. 7 is a sectional view and circuit diagram of the third embodiment, FIGS. 8 and 9 are sectional views and circuit diagrams of the fourth embodiment, FIGS. 10 and 11 are sectional views and circuit diagrams of the fifth embodiment, and 12th and 13 are a sectional view and a circuit diagram of the sixth embodiment. 16...Valve body, 17.18...P port, 19°20...M port, 21...Spool, 22.23
...Dumping room, 26, 27, 54, 65.74・
...Communication path, 2B, 29. 55. 56...Damper orifice, 30, 31, 52, 53, 59.60
...Small piston, 34.35...Pressure receiving surface, 36.3
7...Pilot pressure chamber.
Claims (1)
ールを組込み、このスプールの両端をダンピング室に臨
ませるとともに、このダンピング室にはスプリングを介
在させ、このスプリング力とパイロンへ圧とを対抗させ
る関係にしたダブルカウンタバランス弁において、前記
両ダンピング室内におけるスプール両端の受圧面積を等
しくするとともに、このスプール両端にそれと一体ある
いは別体にした小ピ長トンを設け、それぞれＰポートに
連通したパイロット圧室に小ピストンを臨ませ、この小
ピストンのパイロット圧受圧面積をダンピング室内にお
けるスプールの受圧面積に対して十分小さくする一方、
ダンパオリフィスを設けた連通路を介して前記両ダンピ
ング室を連通させるとともに、この連通路を、いずれか
一方のＰポート側あるいはいずれか一方のＭポート側に
連通させてなるダブルカウンタバランス弁。A spool is built into the valve body that has a pair of P ports and M ports, and both ends of the spool face a damping chamber. A spring is interposed in the damping chamber, and the spring force and pressure are applied to the pylon. In the double counterbalance valve arranged in opposing relation, the pressure receiving areas at both ends of the spool in both damping chambers are made equal, and small pin length tons are provided at both ends of the spool either integrally or separately, and each communicates with the P port. A small piston is made to face the pilot pressure chamber, and the pilot pressure receiving area of the small piston is made sufficiently smaller than the pressure receiving area of the spool in the damping chamber, while
A double counterbalance valve in which both the damping chambers are communicated through a communication passage provided with a damper orifice, and the communication passage is communicated with one of the P ports or one of the M ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4187682U JPS58146167U (en) | 1982-03-26 | 1982-03-26 | double counterbalance valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4187682U JPS58146167U (en) | 1982-03-26 | 1982-03-26 | double counterbalance valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58146167U true JPS58146167U (en) | 1983-10-01 |
Family
ID=30053047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4187682U Pending JPS58146167U (en) | 1982-03-26 | 1982-03-26 | double counterbalance valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58146167U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996012110A1 (en) * | 1994-10-18 | 1996-04-25 | Komatsu Ltd. | Counter-balance valve |
-
1982
- 1982-03-26 JP JP4187682U patent/JPS58146167U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996012110A1 (en) * | 1994-10-18 | 1996-04-25 | Komatsu Ltd. | Counter-balance valve |
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