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KR960008133A - 낙하방지 밸브장치 - Google Patents

낙하방지 밸브장치 Download PDF

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Publication number
KR960008133A
KR960008133A KR1019950015300A KR19950015300A KR960008133A KR 960008133 A KR960008133 A KR 960008133A KR 1019950015300 A KR1019950015300 A KR 1019950015300A KR 19950015300 A KR19950015300 A KR 19950015300A KR 960008133 A KR960008133 A KR 960008133A
Authority
KR
South Korea
Prior art keywords
valve
control valve
side passage
spool
cylinder
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.)
Ceased
Application number
KR1019950015300A
Other languages
English (en)
Inventor
슈우지 호리
타다오 카라카마
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 KR960008133A publication Critical patent/KR960008133A/ko
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2267—Valves or distributors
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/226—Safety arrangements, e.g. hydraulic driven fans, preventing cavitation, leakage, overheating
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2271—Actuators and supports therefor and protection therefor
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2285—Pilot-operated systems
    • 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
    • F15B13/01—Locking-valves or other detent i.e. load-holding devices
    • F15B13/015—Locking-valves or other detent i.e. load-holding devices using an enclosed pilot flow 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
    • Y10T137/8593—Systems
    • Y10T137/87169—Supply and exhaust
    • Y10T137/87233—Biased exhaust valve
    • Y10T137/87241—Biased closed

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Safety Valves (AREA)
  • Fluid-Driven Valves (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Lifting Devices For Agricultural Implements (AREA)

Abstract

본 발명에 의하면 실린더에 부착할 때 밸브본체의 부착높이치수를 작게함과 아울러, 밸브본체(10)에 체크밸브(24)와 유량제어밸브(34)와 안전밸브(44)를 그 실린더부착면(11)과 평행한 동일 평면내에 설치해서 부착하여 밸브본체(l0)의 실린더부착면(11)으로부터의 높이를 낮은 것으로 한다.

Description

낙하방지 밸브장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제2도는 본 발명의 제1실시예를 표시하는 횡단면도.
제3도는 제2도의 좌측면도.
제4도는 제2도의 우측면도.
제7도는 유량제어밸브의 스풀스트로크와 파일럿 작동유의 압력과의 관계를 표시하는 도표.
제8도는 유압회로에 조립된 상태의 설명도.
제9도는 본 발명의 제2실시예를 표시하는 횡단면도.

Claims (3)

  1. 실린더부착면(11)에 열린 실린더포트(19)에 연이어 통한 실린더측 통로(20)와, 방향제어밸브포트(17)에 연이어 통한 방향제어밸브측 통로(18)를 보유하는 밸브본체(1O)와, 이 밸브본체(10)에 설치되어서 실린더측통로(20)로부더 방향제어밸브측 통로(18)로의 작동유유입을 저지하는 체크밸브(24)와, 상기 밸브본체(10)에 설치되어 방향제어밸브측 통로(18)와 실린더측 통로(20)를 항상 차단하고, 외부신호로 연이어 통하는 유량제어밸브(34)와, 상기 밸브본체(10)에 설치되어서 실린더측 통로(20)의 고압을 릴리프하는 안전밸브(44)로 이루어지고, 상기 체크밸브(24), 유량제어밸브(34), 안전밸브(44)를 실린더부착면(11)과 대략 평행한 한평면에 설치한 것을 특징으로 하는 낙하방지 밸브장치.
  2. 제1항에 있어서, 상기 유량제어밸브(34)를 스풀구멍(25)에 스풀(26)을 연이어 통하는 위치와 차단위치에 걸쳐서 미끄럼자재하게 끼워맞춤하고, 이 스풀(26)을 복수의 스프링에 의해, 차단위치에 힘을 더하여 보유하고, 또한 파일럿작동유에 의해 연이어 통하는 방향으로 미는 것으로 하고, 상기한 복수의 스프링을 그 파일럿 작동유의 압력이 낮은 범위에서는 파일럿작동유의 변화에 대하여 스풀스트로크가 크고, 어느 압력이상으로 되면 스풀스트토크가 작아지도록 설정한 낙하방지 벨브장치.
  3. 제1항에 있어서, 상기한 유량제어밸브(34)를 스풀구멍(25)에 스풀(26)을 끼워 맞춤하고, 고 스풀(26)에 콘시이트부(81)를 설치하고, 그 콘시이트부(81)에 의해서 방향제어밸브측 통로(18)와 실린더측 통로(20)를 차단하도룩 한 낙하방지 밸브장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019950015300A 1994-08-05 1995-06-10 낙하방지 밸브장치 Ceased KR960008133A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP94-184492 1994-08-05
JP18449294A JP3397454B2 (ja) 1994-08-05 1994-08-05 落下防止弁装置

Publications (1)

Publication Number Publication Date
KR960008133A true KR960008133A (ko) 1996-03-22

Family

ID=16154129

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950015300A Ceased KR960008133A (ko) 1994-08-05 1995-06-10 낙하방지 밸브장치

Country Status (7)

Country Link
US (1) US5813310A (ko)
EP (1) EP0774547B1 (ko)
JP (1) JP3397454B2 (ko)
KR (1) KR960008133A (ko)
CN (1) CN1158649A (ko)
DE (1) DE69520585T2 (ko)
WO (1) WO1996004431A1 (ko)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5860233A (en) * 1997-04-14 1999-01-19 Caterpillar Inc. Valve configuration and mounting arrangement
KR100611713B1 (ko) * 2004-10-14 2006-08-11 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 재생기능을 구비한 유압제어밸브
TWM315185U (en) * 2006-12-15 2007-07-11 Wei-Te Hsu Vehicular hydraulic tank reverse safety device
US9340956B2 (en) 2012-10-11 2016-05-17 Cnh Industrial America Llc Boom lock system for work machine
US20170175780A1 (en) * 2014-05-14 2017-06-22 Moisés Castro Salinas Safety Valve For The Hydraulic Hopper Lifting System Of Compactor Trucks
WO2015174815A1 (es) 2014-05-14 2015-11-19 CASTRO SALINAS, Moisés Seguro para tolva de camión compactador
JP2017133596A (ja) * 2016-01-28 2017-08-03 Ｋｙｂ株式会社 パイロット式切換弁
US10487474B2 (en) * 2017-06-23 2019-11-26 Deere & Company System and method for hydraulic actuator lock valve
US11459220B2 (en) * 2017-11-30 2022-10-04 Danfoss Power Solution II Technology A/S Hydraulic system with load sense and methods thereof

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795255A (en) * 1972-01-10 1974-03-05 Parker Hannifin Corp Load control and holding valve
US3929159A (en) * 1975-02-10 1975-12-30 Sperry Rand Corp Power transmission
JPS5722554U (ko) 1980-07-15 1982-02-05
DE3239930A1 (de) 1982-10-28 1984-05-10 Mannesmann Rexroth GmbH, 8770 Lohr Hydraulisch steuerbares sperrventil, insbesondere fuer die rohrbruchsicherung
US4716933A (en) * 1986-10-16 1988-01-05 J. I. Case Company Valve unit
JPH01169105A (ja) * 1987-12-23 1989-07-04 Komatsu Ltd 作業機シリンダの急速落下防止装置
JPH0829834B2 (ja) * 1989-08-14 1996-03-27 株式会社青山製作所 台車上への箱積上げ装置
JPH0373713U (ko) * 1989-11-22 1991-07-24
US5062349A (en) * 1990-03-19 1991-11-05 Baroid Technology, Inc. Fluid economizer control valve system for blowout preventers
JPH06193750A (ja) * 1992-12-22 1994-07-15 Komatsu Ltd 油圧バルブ装置
US5579676A (en) * 1995-07-13 1996-12-03 Husco International, Inc. Hydraulic valve to maintain control in fluid-loss condition

Also Published As

Publication number Publication date
EP0774547A1 (en) 1997-05-21
DE69520585D1 (de) 2001-05-10
CN1158649A (zh) 1997-09-03
DE69520585T2 (de) 2001-08-09
JP3397454B2 (ja) 2003-04-14
EP0774547B1 (en) 2001-04-04
WO1996004431A1 (fr) 1996-02-15
JPH0842740A (ja) 1996-02-16
US5813310A (en) 1998-09-29
EP0774547A4 (en) 1997-12-29

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A201 Request for examination
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Patent event code: PA01091R01D

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Patent event date: 19950610

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Patent event date: 19980525

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E601 Decision to refuse application
PE0601 Decision on rejection of patent

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