KR960008134A - 방향제어밸브 - Google Patents

방향제어밸브 Download PDF

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Publication number
KR960008134A
KR960008134A KR1019950016871A KR19950016871A KR960008134A KR 960008134 A KR960008134 A KR 960008134A KR 1019950016871 A KR1019950016871 A KR 1019950016871A KR 19950016871 A KR19950016871 A KR 19950016871A KR 960008134 A KR960008134 A KR 960008134A
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KR
South Korea
Prior art keywords
piston
stopper
juice pool
oil
juice
Prior art date
Application number
KR1019950016871A
Other languages
English (en)
Inventor
나오키 이시자키
토시로오 타카노
Original Assignee
카타다 테쯔야
카부시키가이샤 코마쯔세이사쿠쇼
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 by 카타다 테쯔야, 카부시키가이샤 코마쯔세이사쿠쇼 filed Critical 카타다 테쯔야
Publication of KR960008134A publication Critical patent/KR960008134A/ko

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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
    • F15B13/021—Valves for interconnecting the fluid chambers of an actuator
    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/024—Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • F15B11/12—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action
    • F15B11/121—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action providing distinct intermediate positions
    • F15B11/123—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action providing distinct intermediate positions by means of actuators with fluid-operated stops
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3122—Special positions other than the pump port being connected to working ports or the working ports being connected to the return line
    • F15B2211/3133—Regenerative position connecting the working ports or connecting the working ports to the pump, e.g. for high-speed approach stroke
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/35—Directional control combined with flow control
    • 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
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86582—Pilot-actuated
    • Y10T137/86606—Common to plural valve motor chambers
    • 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
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86622—Motor-operated
    • Y10T137/8663—Fluid motor

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

재생유량을 2단계로 증감해서 작업기실린더의 하강속도를 2단계로 변경시킬 수 있도록 한다.
주스풀(11)을 제1주수압실(30)내의 압유에 의해 우측으로 스트로우크하는 동시에 수압실(36)의 압유에 의해 이동되는 피스톤(35)으로 주스풀(11)을 우측으로 스트로우크하고, 상기한 주스풀(11)의 우측으로의 최대 스트로우크를 피스톤(34)의 최대 스트로우크보다 길게 해서 제1주수압실(30)에 압유를 공급했을 때에는 미터아우트 개구면적과 재생개구면적을 크게 하고, 수압실(36)에 압유를 공급했을 때에는 미터아우트 개구면적과 재생개구면적을 작게 하므로써 재생유량을 2단계로 한다.

Description

방향제어밸브
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 제1실시예를 표시하는 단면도.
제2도는 주스풀스트로우크와 파일럿압의 관계를 표시하는 도표.
제3도는 본 발명의 제2실시예를 표시하는 단면도.
제4도는 주스풀스트로우크와 파일럿압의 관계를 표시하는 도표.

Claims (5)

  1. 작업기실린더(47)의 하강작동실(49)에 접속한 제2액츄에이디포오트(15)를 역지밸브(18)를 통해서 재생포오트(17)에 연통시키는 재생통로(19)와, 작업기실린더(47)의 상승작동실(48)에 접속한 제1액츄에이터포오트(14)와, 일방향으로 이동하므로써 재2액츄에이티포오트(15)에 압유를 공급하는 동시에 제1액츄에이터포오트(14)를 재생포오트(17)에 연통시키는 주스풀(11)을 보유하는 방향제어밸브에 있어서, 상기한 주스풀(11)의 일방향으로의 최대스트로우크를 복수단으로 절환하는 수단을 설치한 것을 특징으로 하는 방향제어밸브.
  2. 제1항에 있어서, 주스풀(11)의 끝면에 압유을 작용시키는 주수압실과 수압실(36)의 압유에 의해 소정의 스트로우크 접동하여 주스풀(11)을 압압하는 피스톤(35)과, 상기한 주스풀(11)의 최대스트로우크를 상기한 피스톤(35)의 최대스트로우크와 다른 값으로 규제하는 스토퍼로 상기한 절환수단으로 한 것을 특징으로 하는 방향제어 밸브.
  3. 제2항에 있이서, 싱기한 피스톤(35)의 수입면적(A1)을 주스풀(11)의 최대스트로우크보나도 짧게 하고, 그 피스톤(35)의 수압면적(A1)을 주스풀(11)의 수압면적(A2)보다도 작게 한 것을 특징으로 하는 방향제어밸브.
  4. 제1항에 있어서, 주스풀(11)의 일방향으로의 최대스트로우크를 규제하는 제1스토퍼(31)와, 이 제1스토퍼(31)의 스토퍼받이가 되어서 주스풀(11)의 이동방향으로 접동자재하고, 또, 수압실(52)에 압유가 공급되면 제1스토퍼(31)측으로 접동되는 피스톤(51)과, 그 수압실(52)에 압유를 공급하는 절환밸브(55)로 절환수단으로한 것을 특징으로 하는 방향제어밸브.
  5. 제1항에 있어서, 주스풀(11)의 일방향으로의 최대스트로우크를 규제하는 제1스토퍼(31)와, 이 제1스토퍼(31)의 스토퍼받이가 되어서 주스풀(11)의 이동방향으로 접동자재하고, 또 수압실(66)에 압유가 공급되면 제1스토퍼(31)측으로 접동하는 피스톤(64)과, 이 피스톤(64)과 주스풀(11) 사이에 설치한 보조스프링(67)과 상기한 수압실(66)에 압유를 공급하는 절환밸브(70)로 절환수단으로 한 것을 특징으로 하는 방향제어밸브.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019950016871A 1994-08-05 1995-06-22 방향제어밸브 KR960008134A (ko)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP94-184534 1994-08-05
JP18453494 1994-08-05
JP94-304967 1994-12-08
JP30496794A JP3549126B2 (ja) 1994-08-05 1994-12-08 方向制御弁

Publications (1)

Publication Number Publication Date
KR960008134A true KR960008134A (ko) 1996-03-22

Family

ID=26502552

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950016871A KR960008134A (ko) 1994-08-05 1995-06-22 방향제어밸브

Country Status (5)

Country Link
US (1) US5832808A (ko)
EP (1) EP0777056A4 (ko)
JP (1) JP3549126B2 (ko)
KR (1) KR960008134A (ko)
WO (1) WO1996004481A1 (ko)

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JP4532725B2 (ja) * 2000-12-11 2010-08-25 ヤンマー株式会社 掘削旋回作業車のブーム用方向切換弁
US6871574B2 (en) * 2003-05-28 2005-03-29 Husco International, Inc. Hydraulic control valve assembly having dual directional spool valves with pilot operated check valves
US7415989B2 (en) * 2005-12-23 2008-08-26 Husco International, Inc. Spool activated lock-out valve for a hydraulic actuator load check valve
DE102006006228A1 (de) 2006-02-09 2007-08-16 Robert Bosch Gmbh Hydraulische Steueranordnung
DE102006007935A1 (de) * 2006-02-21 2007-10-25 Liebherr France Sas Steuervorrichtung und hydraulische Vorsteuerung
US7921878B2 (en) * 2006-06-30 2011-04-12 Parker Hannifin Corporation Control valve with load sense signal conditioning
KR100814499B1 (ko) * 2007-04-02 2008-03-18 주식회사 파카한일유압 무한궤도형 굴삭기의 주행 직진 기능 개선을 위한 이중제어스풀밸브
US8104511B2 (en) * 2007-08-27 2012-01-31 Parker Hannifin Corporation Sequential stepped directional control valve
JP5356159B2 (ja) * 2009-09-02 2013-12-04 日立建機株式会社 油圧作業機の油圧駆動装置
US9273664B2 (en) * 2011-02-18 2016-03-01 Parker Hannifin Corporation Hydraulic control valve for a one-sided operating differential cylinder having five control edges
US9611871B2 (en) * 2013-09-13 2017-04-04 Norbert J. Kot Pneumatic valve assembly and method
US10519940B2 (en) * 2017-04-19 2019-12-31 Caterpillar Inc. Hydraulic drive system for a linearly actuated hydraulic piston pump
CN107701538B (zh) * 2017-10-17 2023-09-05 上海衡拓液压控制技术有限公司 阀芯内置活塞式液压滑阀结构

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CH659303A5 (de) * 1983-06-15 1987-01-15 Sig Schweiz Industrieges Fluidisches steuerventil und verwendung desselben.
US4623003A (en) * 1985-04-08 1986-11-18 Leonard Willie B Hydraulically actuated spool valve
FR2593265B1 (fr) * 1986-01-17 1988-04-22 Rexroth Sigma Distributeur de fluide hydraulique sous pression
JPH0660644B2 (ja) * 1988-09-20 1994-08-10 油谷重工株式会社 油圧ショベルの油圧回路
JPH0716943Y2 (ja) * 1989-01-27 1995-04-19 東芝機械株式会社 方向制御弁
JP2632728B2 (ja) * 1989-06-26 1997-07-23 株式会社小松製作所 作業機シリンダの制御弁装置
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DE4402633A1 (de) * 1994-01-29 1995-08-03 Rexroth Mannesmann Gmbh Magnetbetätigtes Ventil, insbesondere magnetbetätigtes Vorsteuerventil

Also Published As

Publication number Publication date
EP0777056A1 (en) 1997-06-04
EP0777056A4 (en) 1998-11-25
WO1996004481A1 (fr) 1996-02-15
US5832808A (en) 1998-11-10
JP3549126B2 (ja) 2004-08-04
JPH08100803A (ja) 1996-04-16

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