JPH03102661U - - Google Patents
Info
- Publication number
- JPH03102661U JPH03102661U JP1171090U JP1171090U JPH03102661U JP H03102661 U JPH03102661 U JP H03102661U JP 1171090 U JP1171090 U JP 1171090U JP 1171090 U JP1171090 U JP 1171090U JP H03102661 U JPH03102661 U JP H03102661U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- pressure regulating
- piston
- regulating valve
- stroke
- 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
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Safety Valves (AREA)
Description
第１図は本考案に係る圧力調整弁の一実施例を
示す断面図、第２図は本考案の圧力調整弁の昇圧
特性を示す特性曲線図、第３図は圧力調整弁を使
用した旋回体を有する建設機械の油圧回路図、第
４図は従来の圧力調整弁を示す断面図、第５図は
第４図の圧力調整弁の“イ”部の詳細な説明で圧
力補償スプールが右行してバランスした状態を示
す図である。
２０……高圧室、２１……低圧室、２２……シ
ート、２３……ポペツト、２４……ロツド部、２
５……ハウジング、２６……スリーブ、２７……
内径部、２８……ストツパ部、２９，３０，３５
……圧縮バネ、３１……ピストン、３２……ピス
トン肩部、３３……キヤツプ、３４……圧力補償
スプール、３６……貫通孔、３７，３９，４６…
…油室、３８……オリフイス、４０……横穴、４
１……溝、４２，４４……油路、４３……ピスト
ン背圧室、４５……内径部。
Fig. 1 is a sectional view showing an embodiment of the pressure regulating valve according to the present invention, Fig. 2 is a characteristic curve diagram showing the pressure increase characteristics of the pressure regulating valve of the present invention, and Fig. 3 is a turning diagram using the pressure regulating valve. Figure 4 is a cross-sectional view showing a conventional pressure regulating valve, and Figure 5 is a detailed explanation of the "A" part of the pressure regulating valve in Figure 4, with the pressure compensating spool on the right. FIG. 20... High pressure chamber, 21... Low pressure chamber, 22... Seat, 23... Poppet, 24... Rod portion, 2
5...Housing, 26...Sleeve, 27...
Inner diameter part, 28...Stopper part, 29, 30, 35
... Compression spring, 31 ... Piston, 32 ... Piston shoulder, 33 ... Cap, 34 ... Pressure compensation spool, 36 ... Through hole, 37, 39, 46 ...
...Oil chamber, 38...Orifice, 40...Side hole, 4
1...Groove, 42, 44...Oil passage, 43...Piston back pressure chamber, 45...Inner diameter part.
Claims (1)
低圧室の間を開閉するポペツトに、他端を規定ス
トロークＧ内で摺動可能なピストンの一端面にそ
れぞれ当接させるとともに、前記ピストンの他端
のピストン背圧室へ前記高圧室の圧油を圧力補償
付流量調整弁を介して導入することにより、前記
圧力調整弁の作動圧力を漸次上昇させ、前記ピス
トンが前記ストロークＧを移動した位置で作動圧
力が一定となるよう構成した圧力調整弁において
、前記調圧用圧縮バネと並設され、初めは自由で
、前記ピストンのストロークＧ途中から前記ピス
トンによる圧縮力を受けて前記調圧用圧縮バネと
ともに協働して前記ポペツトを押圧するよう構成
された別の圧縮バネを設けたことを特徴とする圧
力調整弁。 One end of the pressure regulating compression spring of the pressure regulating valve is brought into contact with a poppet that opens and closes between a high pressure chamber and a low pressure chamber, and the other end is brought into contact with one end surface of a piston that can slide within a specified stroke G, and By introducing the pressure oil in the high pressure chamber into the piston back pressure chamber at the other end via a flow rate adjustment valve with pressure compensation, the operating pressure of the pressure adjustment valve is gradually increased, and the piston moves through the stroke G. In a pressure regulating valve configured such that the operating pressure is constant at a certain position, the pressure regulating valve is arranged in parallel with the pressure regulating compression spring, is free at first, and receives the compression force from the piston in the middle of the stroke G of the piston, and starts the pressure regulating compression. A pressure regulating valve, characterized in that a further compression spring is provided, which is arranged to cooperate with the spring to press the poppet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1171090U JP2515790Y2 (en) | 1990-02-08 | 1990-02-08 | Pressure regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1171090U JP2515790Y2 (en) | 1990-02-08 | 1990-02-08 | Pressure regulating valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03102661U true JPH03102661U (en) | 1991-10-25 |
| JP2515790Y2 JP2515790Y2 (en) | 1996-10-30 |
Family
ID=31515231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1171090U Expired - Lifetime JP2515790Y2 (en) | 1990-02-08 | 1990-02-08 | Pressure regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2515790Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010255748A (en) * | 2009-04-24 | 2010-11-11 | Maruyama Mfg Co Ltd | Pressure regulating valve |
-
1990
- 1990-02-08 JP JP1171090U patent/JP2515790Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010255748A (en) * | 2009-04-24 | 2010-11-11 | Maruyama Mfg Co Ltd | Pressure regulating valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2515790Y2 (en) | 1996-10-30 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |