JP5237657B2 - 重機用リリーフバルブ - Google Patents
重機用リリーフバルブ Download PDFInfo
- Publication number
- JP5237657B2 JP5237657B2 JP2008062327A JP2008062327A JP5237657B2 JP 5237657 B2 JP5237657 B2 JP 5237657B2 JP 2008062327 A JP2008062327 A JP 2008062327A JP 2008062327 A JP2008062327 A JP 2008062327A JP 5237657 B2 JP5237657 B2 JP 5237657B2
- Authority
- JP
- Japan
- Prior art keywords
- plug
- pressure
- guide
- flow path
- poppet
- 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.)
- Expired - Fee Related
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Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
- F16K17/065—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure with differential piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/10—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/14—Control of fluid pressure with auxiliary non-electric power
- G05D16/18—Control of fluid pressure with auxiliary non-electric power derived from an external source
- G05D16/187—Control of fluid pressure with auxiliary non-electric power derived from an external source using pistons within the main valve
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7738—Pop valves
- Y10T137/7744—Adjustable choke
- Y10T137/7745—Annular lip or baffle
- Y10T137/7747—Screw threaded
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Safety Valves (AREA)
- Preventing Unauthorised Actuation Of Valves (AREA)
Description
本発明の属する技術分野において通常の技術を有する者が発明を容易に実施し得る程度に詳細に説明するためのものであって、これにより本発明の技術的思想及び範疇が限定されることを意味するのではない。
2 スリーブ
6 ポペット
7 ピストン
10 ポペットばね
11 ピストンばね
12 パイロットポペット
14 パイロットポペットばね
19 バルブシート
20 ガイド
20a 係止顎
21、23 締結ナット
22 調整プラグ
25 ストッパー
Claims (2)
- 油圧ポンプから作動油が流入される流入口と、流入口の作動油を油圧タンクに帰還させるためのタンク流路とが形成されているスリーブと、
前記流入口とタンク流路との間の流路を開閉するようにスリーブ内部に結合されるポペットと、
前記スリーブの圧力室に設定圧力を形成するようにポペットに対向して設けられるバルブシートと、
前記圧力室に設定圧力を超えるような高圧が生じた時、バルブシートの流路を開放させ、圧力室の作動油を油圧タンクにドレーンさせるパイロットポペットと、
前記スリーブの内部に螺合され、タンク流路と連通するタンク入口が形成されているプラグと、
前記プラグの内部に螺合され、プラグと結合される密着面の隙間を気密に塞ぐようにOリングが外側面に装着され、外側面に前記Oリングが装着される係止顎によって装着溝が形成されているガイドと、
外部よりパイロット信号圧の供給時、パイロットポペットを加圧して圧力室の設定圧力を可変調整するメインピストンと、
前記ガイドの内部に結合され、パイロット信号圧が流入される調整プラグと、
バルブの設定圧力をセットするためにプラグからガイドを弛緩させる場合、前記Oリングを装着するための前記係止顎を支持することでプラグからガイドが離脱することを防止するストッパーとを含めることを特徴とする重機用リリーフバルブ。 - 前記ストッパーとして、前記プラグに形成の螺子孔に螺合する固定ボルトが用いることを特徴とする請求項1に記載の重機用リリーフバルブ。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2007-0029683 | 2007-03-27 | ||
KR1020070029683A KR100826627B1 (ko) | 2007-03-27 | 2007-03-27 | 중장비용 릴리프밸브 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008241037A JP2008241037A (ja) | 2008-10-09 |
JP5237657B2 true JP5237657B2 (ja) | 2013-07-17 |
Family
ID=39596456
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008062327A Expired - Fee Related JP5237657B2 (ja) | 2007-03-27 | 2008-03-12 | 重機用リリーフバルブ |
Country Status (5)
Country | Link |
---|---|
US (1) | US20080236678A1 (ja) |
EP (1) | EP1975481B1 (ja) |
JP (1) | JP5237657B2 (ja) |
KR (1) | KR100826627B1 (ja) |
CN (1) | CN101275684B (ja) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101293800B1 (ko) | 2008-11-21 | 2013-08-06 | 현대중공업 주식회사 | 2단 압력 조절용 파일럿 |
KR100950571B1 (ko) | 2009-02-27 | 2010-04-01 | (주)동우정공 | 건설중장비용 릴리프밸브 |
KR20110038224A (ko) * | 2009-10-08 | 2011-04-14 | 볼보 컨스트럭션 이큅먼트 에이비 | 압력 제어밸브 |
JP5663084B2 (ja) * | 2010-05-17 | 2015-02-04 | ボルボ コンストラクション イクイップメント アーベー | 圧力制御弁 |
CN102191944A (zh) * | 2011-05-09 | 2011-09-21 | 巨隆集团芜湖兴隆液压有限公司 | 一种插装式中流量立柱液控单向阀 |
CN106123412B (zh) * | 2016-06-30 | 2019-03-26 | 江苏金荣森制冷科技有限公司 | 带可调式泄压阀的液压旁路的工业制冷机 |
CN108150473B (zh) * | 2017-12-27 | 2019-07-23 | 凯文斯流体控制(江苏)有限公司 | 一种缓冲溢流阀 |
CN108150472B (zh) * | 2017-12-27 | 2019-11-15 | 浙江百思达水暖股份有限公司 | 一种缓冲溢流阀 |
CN110259751A (zh) * | 2019-07-15 | 2019-09-20 | 宁波克泰液压有限公司 | 螺纹插装式先导增压二级溢流阀 |
CN110566530B (zh) * | 2019-09-06 | 2021-05-11 | 烟台中宇航空液压有限公司 | 一种用于电液伺服阀的防漏油装置 |
CN112555474B (zh) * | 2020-12-03 | 2023-05-16 | 重庆红江机械有限责任公司 | 一种机械式滑油控制安全阀组件 |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
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SE302826B (ja) * | 1961-04-11 | 1968-08-05 | Medicinsk Apparatservice Ab | |
US3249018A (en) * | 1963-07-17 | 1966-05-03 | Ellis Fluid Dynamics Corp | Fluid motor |
US3268220A (en) * | 1964-01-06 | 1966-08-23 | Dro Engineering Company Di | Hydraulic cushion for dies |
JPS4928729U (ja) * | 1972-06-16 | 1974-03-12 | ||
JPS55181072U (ja) * | 1979-06-15 | 1980-12-26 | ||
US4860788A (en) * | 1987-06-29 | 1989-08-29 | Kayaba Industry Co. Ltd. | Metering valve |
FR2671157B1 (fr) * | 1990-12-31 | 1993-10-29 | Forges Belles Ondes | Appareil limiteur de pression. |
JPH05221696A (ja) * | 1992-02-14 | 1993-08-31 | Sumitomo Cement Co Ltd | 光学デバイス用単結晶ファイバーを基体に固定する方法 |
JPH0791557A (ja) * | 1993-09-28 | 1995-04-04 | Komatsu Ltd | リリーフ弁 |
JPH1172172A (ja) * | 1997-06-20 | 1999-03-16 | Hitachi Constr Mach Co Ltd | バランスピストン型リリーフ弁 |
JPH1194105A (ja) * | 1997-09-24 | 1999-04-09 | Shin Caterpillar Mitsubishi Ltd | リリーフバルブおよびその設定圧調整装置 |
JPH11132347A (ja) * | 1997-10-31 | 1999-05-21 | Zexel:Kk | 2段リリーフバルブ |
GB2363187B (en) * | 1999-02-12 | 2003-06-04 | Goodwin Internat Ltd | Check valve plate with anti-pressure surge device |
DE10063153A1 (de) * | 2000-12-18 | 2002-06-20 | Mannesmann Rexroth Ag | Direktgesteuertes Druckbegrenzungsventil |
JP2003185042A (ja) * | 2001-12-17 | 2003-07-03 | Shin Caterpillar Mitsubishi Ltd | ラインリリーフ弁 |
KR100493325B1 (ko) * | 2001-12-18 | 2005-06-07 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | 유압 릴리프밸브 |
JP3600587B2 (ja) * | 2002-02-26 | 2004-12-15 | 株式会社藤井合金製作所 | ガス栓 |
DE10345712A1 (de) * | 2003-10-01 | 2005-04-21 | Bosch Rexroth Ag | Druck-Einspeiseventil |
KR100586023B1 (ko) * | 2004-02-12 | 2006-06-01 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | 릴리프 밸브 |
KR20050081058A (ko) * | 2004-02-12 | 2005-08-18 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | 릴리프 밸브 |
KR100764119B1 (ko) * | 2004-02-25 | 2007-10-08 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | 파일럿 포펫형 릴리프 밸브 |
KR200350187Y1 (ko) * | 2004-02-27 | 2004-06-02 | 치왕 리앙 | 흡착장치 |
KR100621983B1 (ko) * | 2004-07-23 | 2006-09-14 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | 중장비용 가변 재생밸브 |
US7467642B2 (en) * | 2005-03-11 | 2008-12-23 | Sun Hydraulics Corp. | Soft ventable relief valve |
KR200412969Y1 (ko) * | 2005-10-28 | 2006-04-05 | 옥 분 황 | 릴리프밸브장치 |
-
2007
- 2007-03-27 KR KR1020070029683A patent/KR100826627B1/ko not_active IP Right Cessation
-
2008
- 2008-03-12 US US12/075,587 patent/US20080236678A1/en not_active Abandoned
- 2008-03-12 JP JP2008062327A patent/JP5237657B2/ja not_active Expired - Fee Related
- 2008-03-14 EP EP20080004767 patent/EP1975481B1/en not_active Expired - Fee Related
- 2008-03-26 CN CN2008100841001A patent/CN101275684B/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN101275684B (zh) | 2012-06-20 |
JP2008241037A (ja) | 2008-10-09 |
KR100826627B1 (ko) | 2008-05-02 |
US20080236678A1 (en) | 2008-10-02 |
EP1975481B1 (en) | 2014-05-21 |
CN101275684A (zh) | 2008-10-01 |
EP1975481A2 (en) | 2008-10-01 |
EP1975481A3 (en) | 2013-03-13 |
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