JPS62162477U - - Google Patents
Info
- Publication number
- JPS62162477U JPS62162477U JP5131286U JP5131286U JPS62162477U JP S62162477 U JPS62162477 U JP S62162477U JP 5131286 U JP5131286 U JP 5131286U JP 5131286 U JP5131286 U JP 5131286U JP S62162477 U JPS62162477 U JP S62162477U
- Authority
- JP
- Japan
- Prior art keywords
- shockless
- chamber
- piston
- relief valve
- secondary 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
- 239000006096 absorbing agent Substances 0.000 claims 1
- 238000013016 damping Methods 0.000 claims 1
- 239000010720 hydraulic oil Substances 0.000 claims 1
- 230000035939 shock Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Fluid-Pressure Circuits (AREA)
- Safety Valves (AREA)
- Details Of Valves (AREA)
Description
図面第1,2図はこの考案の実施例を示すもの
で、第1図は回路図、第2図は断面図、第3図は
第2実施例を示す断面図、第4,5図は従来の装
置を示すもので、第4図は回路図、第5図は断面
図である。
22,23……リリーフ弁、30,31……2
次圧室、32,33,47……シヨツクレスピス
トン、34,35,48……緩衝室、37a……
シート部、38……ポペツト部材、38c……オ
リフイス、43,49……ダンパ室、46,52
……チエツク弁。
Drawings 1 and 2 show an embodiment of this invention; Fig. 1 is a circuit diagram, Fig. 2 is a sectional view, Fig. 3 is a sectional view showing the second embodiment, and Figs. 4 and 5 are A conventional device is shown, with FIG. 4 being a circuit diagram and FIG. 5 being a sectional view. 22, 23...Relief valve, 30, 31...2
Secondary pressure chamber, 32, 33, 47...Shockless piston, 34, 35, 48...Buffer chamber, 37a...
Seat portion, 38... Poppet member, 38c... Orifice, 43, 49... Damper chamber, 46, 52
...Check valve.
Claims (1)
たオリフイスを介して連通させるとともに、シヨ
ツクレスピストンによつて区画形成した緩衝室を
上記2次圧室に接続し、当該リリーフ弁の作動時
に、上記2次圧室の作用でシヨツクレスピストン
が移動し、緩衝室の容積を拡大して、ポペツト部
材に形成した上記オリフイスに流れる流量を確保
し、そのオリフイス前後に発生する差圧の作用で
シート部の開度を制御する一方、上記シヨツクレ
スピストンがストロークエンドに達したとき、当
該リリーフ弁の流入側と2次圧室との受圧面積差
によつて、シート部の開度が制御される構成にし
たリリーフ弁の昇圧緩衝装置において、上記シヨ
ツクレスピストンのストロークエンド近傍で、ダ
ンピング機能を発揮するダンパ室を設けるととも
に、当該シヨツクレスピストンが原位置に復帰す
るときにのみ、上記ダンパ室への作動油の流入を
許容するチエツク弁を設けたリリーフ弁の昇圧緩
衝装置。 The inflow side and the secondary pressure chamber are communicated through an orifice formed in the poppet member, and a buffer chamber defined by a shockless piston is connected to the secondary pressure chamber, and when the relief valve is activated, The shockless piston moves under the action of the secondary pressure chamber, expands the volume of the buffer chamber, and secures the flow rate to the orifice formed in the poppet member, and due to the action of the differential pressure generated before and after the orifice. While controlling the opening degree of the seat part, when the above-mentioned shockless piston reaches the stroke end, the opening degree of the seat part is controlled by the difference in pressure receiving area between the inflow side of the relief valve and the secondary pressure chamber. In a pressure boosting shock absorber for a relief valve, a damper chamber that exhibits a damping function is provided near the stroke end of the above-mentioned shockless piston, and the damper chamber is provided only when the above-mentioned shockless piston returns to its original position. A relief valve pressure boosting buffer equipped with a check valve that allows hydraulic oil to flow into the system.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1986051312U JPH0451202Y2 (en) | 1986-04-04 | 1986-04-04 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1986051312U JPH0451202Y2 (en) | 1986-04-04 | 1986-04-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS62162477U true JPS62162477U (en) | 1987-10-15 |
JPH0451202Y2 JPH0451202Y2 (en) | 1992-12-02 |
Family
ID=30875452
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1986051312U Expired JPH0451202Y2 (en) | 1986-04-04 | 1986-04-04 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0451202Y2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013120730A1 (en) * | 2012-02-17 | 2013-08-22 | Robert Bosch Gmbh | Pressure-limiting valve and hydrostatic traction drive |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5833834U (en) * | 1981-08-28 | 1983-03-05 | カヤバ工業株式会社 | brake valve |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5833834B2 (en) * | 1978-03-22 | 1983-07-22 | 啓 後藤 | transfer paper |
-
1986
- 1986-04-04 JP JP1986051312U patent/JPH0451202Y2/ja not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5833834U (en) * | 1981-08-28 | 1983-03-05 | カヤバ工業株式会社 | brake valve |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013120730A1 (en) * | 2012-02-17 | 2013-08-22 | Robert Bosch Gmbh | Pressure-limiting valve and hydrostatic traction drive |
Also Published As
Publication number | Publication date |
---|---|
JPH0451202Y2 (en) | 1992-12-02 |
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