JPH0368684U - - Google Patents

Info

Publication number
JPH0368684U
JPH0368684U JP13006889U JP13006889U JPH0368684U JP H0368684 U JPH0368684 U JP H0368684U JP 13006889 U JP13006889 U JP 13006889U JP 13006889 U JP13006889 U JP 13006889U JP H0368684 U JPH0368684 U JP H0368684U
Authority
JP
Japan
Prior art keywords
pressure
drain passage
control
orifice
valve
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
Application number
JP13006889U
Other languages
Japanese (ja)
Other versions
JP2538764Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1989130068U priority Critical patent/JP2538764Y2/en
Publication of JPH0368684U publication Critical patent/JPH0368684U/ja
Application granted granted Critical
Publication of JP2538764Y2 publication Critical patent/JP2538764Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案第１実施例の圧力制御弁を示す
断面図、第２図は本考案第２実施例の圧力制御弁
を示す断面図である。 ２４……パイロツトスプール（バルブスプール
）、７５……バルブスプール、２６，７９……フ
イードバツク室（反力手段）、３３，８０……ス
プリング（反力手段）、２７，３２，７８，８１
……低圧室、２８……ソレノイド（制御手段）、
３４……パイロツト供給ポート、６１……メイン
供給ポート、７６……供給ポート、４１，４２，
４３，８５……油路（メインドレイン通路）、４
５，８６……（第２の）背圧防止用オリフイス、
４７，８４……（第１の）背圧防止用オリフイス
、４６，４８，８２，８３……油路（サブドレイ
ン通路）、５２，８９……シリンダポート（制御
圧ポート）、２０１……緩衝用オリフイス、２０
２……連通路。 FIG. 1 is a sectional view showing a pressure control valve according to a first embodiment of the present invention, and FIG. 2 is a sectional view showing a pressure control valve according to a second embodiment of the present invention. 24... Pilot spool (valve spool), 75... Valve spool, 26, 79... Feedback chamber (reaction force means), 33, 80... Spring (reaction force means), 27, 32, 78, 81
...Low pressure chamber, 28...Solenoid (control means),
34... Pilot supply port, 61... Main supply port, 76... Supply port, 41, 42,
43, 85...Oil passage (main drain passage), 4
5, 86... (second) back pressure prevention orifice,
47, 84... (first) back pressure prevention orifice, 46, 48, 82, 83... oil passage (sub drain passage), 52, 89... cylinder port (control pressure port), 201... buffer orifice for, 20
2...Communication path.

Claims (1)

【実用新案登録請求の範囲】 １ バルブ穴内に摺動可能に設けられ、バルブ穴
に形成された制御圧ポートを供給ポート及びメイ
ンドレイン通路のいずれかに接続して制御圧ポー
トの制御液圧を制御可能なバルブスプールと、 該バルブスプールを制御液圧増圧方向へ押圧制
御する制御手段と、 前記バルブスプールを制御液圧減圧方向へ押圧
する反力手段と、 前記バルブスプールの両端面にそれぞれ画成さ
れた両低圧室と、 該両低圧室を前記メインドレイン通路に背圧防
止用オリフイスを介して連通したサブドレイン通
路と、 前記両低圧室を途中に緩衝用オリフイスを介し
て連通した連通路と、 を備えていることを特徴とする圧力制御弁。 ２ 前記背圧防止用オリフイスが、一方の低圧室
とメインドレイン通路との間に設けられた第１の
背圧防止用オリフイスと、これとは並列に他方の
低圧室とメインドレイン通路との間に設けられた
第２の背圧防止用オリフイスとの２つのオリフイ
スで構成されていることを特徴とする請求項１記
載の圧力制御弁。[Claims for Utility Model Registration] 1. A control pressure port that is slidably provided in a valve hole and is formed in the valve hole is connected to either the supply port or the main drain passage to supply the control fluid pressure of the control pressure port. a controllable valve spool; a control means that presses and controls the valve spool in a direction to increase control fluid pressure; a reaction force that presses the valve spool in a direction to decrease control fluid pressure; a sub-drain passage that communicates the two low-pressure chambers with the main drain passage via a backpressure prevention orifice; and a communication line that communicates the two low-pressure chambers with the buffer orifice midway through the main drain passage. A pressure control valve comprising: a passage; 2. The back pressure prevention orifice is a first back pressure prevention orifice provided between one low pressure chamber and the main drain passage, and a first back pressure prevention orifice provided between the other low pressure chamber and the main drain passage in parallel. 2. The pressure control valve according to claim 1, wherein the pressure control valve comprises two orifices, a second orifice for preventing back pressure provided in the pressure control valve.
JP1989130068U 1989-11-07 1989-11-07 Pressure control valve Expired - Lifetime JP2538764Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989130068U JP2538764Y2 (en) 1989-11-07 1989-11-07 Pressure control valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989130068U JP2538764Y2 (en) 1989-11-07 1989-11-07 Pressure control valve

Publications (2)

Publication Number Publication Date
JPH0368684U true JPH0368684U (en) 1991-07-05
JP2538764Y2 JP2538764Y2 (en) 1997-06-18

Family

ID=31677664

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989130068U Expired - Lifetime JP2538764Y2 (en) 1989-11-07 1989-11-07 Pressure control valve

Country Status (1)

Country Link
JP (1) JP2538764Y2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05256227A (en) * 1991-12-24 1993-10-05 Robert Bosch Gmbh Electrically controlled fuel injection system
JP2007239408A (en) * 2006-03-13 2007-09-20 Pc Bridge Co Ltd Floor slab removing method and floor slab removing device
JP2007247273A (en) * 2006-03-16 2007-09-27 Pc Bridge Co Ltd Floor slab separating method and floor slab separating device
CN107923550A (en) * 2016-03-30 2018-04-17 日立建机株式会社 Depressurize valve cell

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS599381A (en) * 1982-07-03 1984-01-18 ロ−ベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Electromagnetic-operation direction control valve proportionally operated
JPS636281U (en) * 1986-07-01 1988-01-16
JPH01199081A (en) * 1988-02-01 1989-08-10 Atsugi Motor Parts Co Ltd Electromagnetically proportional pressure control valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS599381A (en) * 1982-07-03 1984-01-18 ロ−ベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Electromagnetic-operation direction control valve proportionally operated
JPS636281U (en) * 1986-07-01 1988-01-16
JPH01199081A (en) * 1988-02-01 1989-08-10 Atsugi Motor Parts Co Ltd Electromagnetically proportional pressure control valve

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05256227A (en) * 1991-12-24 1993-10-05 Robert Bosch Gmbh Electrically controlled fuel injection system
JP2007239408A (en) * 2006-03-13 2007-09-20 Pc Bridge Co Ltd Floor slab removing method and floor slab removing device
JP4573355B2 (en) * 2006-03-13 2010-11-04 ピーシー橋梁株式会社 Floor slab peeling method and floor slab peeling apparatus
JP2007247273A (en) * 2006-03-16 2007-09-27 Pc Bridge Co Ltd Floor slab separating method and floor slab separating device
JP4573356B2 (en) * 2006-03-16 2010-11-04 ピーシー橋梁株式会社 Floor slab peeling method
CN107923550A (en) * 2016-03-30 2018-04-17 日立建机株式会社 Depressurize valve cell
CN107923550B (en) * 2016-03-30 2019-09-27 日立建机株式会社 Depressurize valve cell

Also Published As

Publication number Publication date
JP2538764Y2 (en) 1997-06-18

Similar Documents

Publication Publication Date Title
JPH01133503U (en)
ATE214816T1 (en) ELECTROHYDRAULIC PROPORTIONAL PRESSURE REDUCING/RELIEF VALVE
JPH0368684U (en)
CA2266787A1 (en) Electrically controlled flow regulator valve with transient dampening
JPH0196502U (en)
JPH0442901U (en)
JPH01169681U (en)
JPS6217814A (en) Three-port type pressure reducing valve
JPS6188008A (en) Hydraulic control device
JPS6427504U (en)
JP2506965Y2 (en) Solenoid directional valve
JPH0229372U (en)
JPH01148962U (en)
JPH0314384U (en)
JPH0330108U (en)
JPH0328378U (en)
JPH03123169U (en)
JPH02110749U (en)
JPS63133604U (en)
JPS63145762U (en)
JPH0241777U (en)
JPH0268269U (en)
JPH0246181U (en)
JPH0326880U (en)
JPH03123167U (en)