DE69520585D1 - Ventileinrichtung zur verhinderung des zusammenfallens eines baumaschinen-arbeitswerkzeuges - Google Patents

Ventileinrichtung zur verhinderung des zusammenfallens eines baumaschinen-arbeitswerkzeuges

Info

Publication number
DE69520585D1
DE69520585D1 DE69520585T DE69520585T DE69520585D1 DE 69520585 D1 DE69520585 D1 DE 69520585D1 DE 69520585 T DE69520585 T DE 69520585T DE 69520585 T DE69520585 T DE 69520585T DE 69520585 D1 DE69520585 D1 DE 69520585D1
Authority
DE
Germany
Prior art keywords
construction
preventing
machine tool
valve device
construction machine
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 - Lifetime
Application number
DE69520585T
Other languages
English (en)
Other versions
DE69520585T2 (de
Inventor
Shuji Hori
Tadao Karakama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
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 Komatsu Ltd filed Critical Komatsu Ltd
Publication of DE69520585D1 publication Critical patent/DE69520585D1/de
Application granted granted Critical
Publication of DE69520585T2 publication Critical patent/DE69520585T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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)
  • Fluid-Driven Valves (AREA)
  • Safety Valves (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
  • Component Parts Of Construction Machinery (AREA)
DE1995620585 1994-08-05 1995-08-03 Ventileinrichtung zur verhinderung des zusammenfallens eines baumaschinen-arbeitswerkzeuges Expired - Lifetime DE69520585T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP18449294A JP3397454B2 (ja) 1994-08-05 1994-08-05 落下防止弁装置
PCT/JP1995/001545 WO1996004431A1 (fr) 1994-08-05 1995-08-03 Appareil a soupapes empechant la chute d'un engin de terrassement

Publications (2)

Publication Number Publication Date
DE69520585D1 true DE69520585D1 (de) 2001-05-10
DE69520585T2 DE69520585T2 (de) 2001-08-09

Family

ID=16154129

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1995620585 Expired - Lifetime DE69520585T2 (de) 1994-08-05 1995-08-03 Ventileinrichtung zur verhinderung des zusammenfallens eines baumaschinen-arbeitswerkzeuges

Country Status (7)

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

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
AR101238A1 (es) 2014-05-14 2016-12-07 Castro Salinas Moisés Seguro para tolva de camión compactador
WO2015174814A1 (es) * 2014-05-14 2015-11-19 CASTRO SALINAS, Moisés Válvula de seguridad para sistema hidráulico de elevación de tolva de camiones compactadores
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 (de) 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 (de) * 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
DE69520585T2 (de) 2001-08-09
KR960008133A (ko) 1996-03-22
EP0774547A4 (de) 1997-12-29
WO1996004431A1 (fr) 1996-02-15
EP0774547A1 (de) 1997-05-21
CN1158649A (zh) 1997-09-03
EP0774547B1 (de) 2001-04-04
US5813310A (en) 1998-09-29
JP3397454B2 (ja) 2003-04-14
JPH0842740A (ja) 1996-02-16

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition