EP0388641A3 - Hydraulic system for earth-moving machines, in particular for loaders, tractors and the like - Google Patents

Hydraulic system for earth-moving machines, in particular for loaders, tractors and the like Download PDF

Info

Publication number
EP0388641A3
EP0388641A3 EP19900103203 EP90103203A EP0388641A3 EP 0388641 A3 EP0388641 A3 EP 0388641A3 EP 19900103203 EP19900103203 EP 19900103203 EP 90103203 A EP90103203 A EP 90103203A EP 0388641 A3 EP0388641 A3 EP 0388641A3
Authority
EP
European Patent Office
Prior art keywords
loaders
tractors
earth
line
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
EP19900103203
Other languages
German (de)
French (fr)
Other versions
EP0388641B1 (en
EP0388641A2 (en
Inventor
Wolfgang Dipl.-Ing. Reich
Franz-Werner Dr.-Ing. Adrian
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.)
Hanomag AG
Original Assignee
Hanomag AG
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 Hanomag AG filed Critical Hanomag AG
Publication of EP0388641A2 publication Critical patent/EP0388641A2/en
Publication of EP0388641A3 publication Critical patent/EP0388641A3/en
Application granted granted Critical
Publication of EP0388641B1 publication Critical patent/EP0388641B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
    • 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
    • E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
    • E02F9/2207—Arrangements for controlling the attitude of actuators, e.g. speed, floating function for reducing or compensating oscillations
    • 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
    • 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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/021—Installations or systems with accumulators used for damping

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)

Abstract

A hydraulic system for earth-moving machines, in particular for loaders, tractors and the like, is provided with an implement, in particular a loading shovel, which can be actuated via hydraulic cylinders (3), a main line (1) being provided for the actuation of the hydraulic cylinders (3), which main line (1) leads from a pressure source via a control valve (2) to the hydraulic cylinders (3) and from which a connecting line (13) branches off downstream of the control valve (2), which connecting line (13) leads to at least one hydraulic reservoir (12) and in which a controllable shut-off valve (14) is arranged. A filling line (19, 20) is provided which bridges the shut-off valve (14) and connects the main line (1) to the hydraulic reservoir (12). A pressure-reducing valve (21) is arranged in the filling line (19, 20). <IMAGE>
EP90103203A 1989-03-21 1990-02-20 Hydraulic system for earth-moving machines, in particular for loaders, tractors and the like Expired - Lifetime EP0388641B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3909205 1989-03-21
DE3909205A DE3909205C1 (en) 1989-03-21 1989-03-21

Publications (3)

Publication Number Publication Date
EP0388641A2 EP0388641A2 (en) 1990-09-26
EP0388641A3 true EP0388641A3 (en) 1991-06-05
EP0388641B1 EP0388641B1 (en) 1993-04-28

Family

ID=6376831

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90103203A Expired - Lifetime EP0388641B1 (en) 1989-03-21 1990-02-20 Hydraulic system for earth-moving machines, in particular for loaders, tractors and the like

Country Status (5)

Country Link
EP (1) EP0388641B1 (en)
AT (1) ATE88773T1 (en)
DE (2) DE3909205C1 (en)
DK (1) DK0388641T3 (en)
ES (1) ES2041061T3 (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE150508T1 (en) * 1991-09-04 1997-04-15 Orenstein & Koppel Ag HYDRAULIC VIBRATION DAMPING SYSTEM FOR WORK MACHINES EQUIPPED WITH WORK EQUIPMENT
DE4221943C2 (en) * 1991-09-04 1996-01-25 Orenstein & Koppel Ag Hydraulic system for mobile working machines provided with working devices
DE4129509C2 (en) * 1991-09-05 1994-06-16 Rexroth Mannesmann Gmbh Hydraulic control arrangement for construction machines
DE4231399A1 (en) * 1992-08-20 1994-02-24 Rexroth Mannesmann Gmbh Hydraulic control device
DE4416228A1 (en) * 1994-05-07 1995-11-09 Rexroth Mannesmann Gmbh Hydraulic system for a mobile working device, in particular for a wheel loader
US5992146A (en) * 1996-04-12 1999-11-30 Caterpillar Inc. Variable rate ride control system
US5706657A (en) * 1996-04-12 1998-01-13 Caterpillar Inc. Ride control system with an auxiliary power source
DE19622762A1 (en) * 1996-06-07 1997-12-11 Rexroth Mannesmann Gmbh Commercial vehicle, especially for agriculture
SE9700297D0 (en) * 1997-01-31 1997-01-31 Lars Bruun Device for hydraulically operated work tools
DE19711769C2 (en) * 1997-03-21 1999-06-02 Mannesmann Rexroth Ag Hydraulic control arrangement for a mobile work machine, in particular for a wheel loader
DE19734658A1 (en) * 1997-08-11 1999-02-18 Mannesmann Rexroth Ag Hydraulic control arrangement for a mobile work machine, in particular for a wheel loader
SE511039C2 (en) 1997-09-30 1999-07-26 Volvo Wheel Loaders Ab Cargo suspension system for damping cargo arm movement
DE19751357B4 (en) * 1997-11-20 2007-01-25 Bosch Rexroth Aktiengesellschaft Hydraulic control arrangement for a mobile work machine, in particular for a wheel loader, for damping pitching vibrations
DE19754828C2 (en) * 1997-12-10 1999-10-07 Mannesmann Rexroth Ag Hydraulic control arrangement for a mobile working machine, in particular for a wheel loader, for damping pitching vibrations
DE19913784A1 (en) 1999-03-26 2000-09-28 Mannesmann Rexroth Ag Load-sensing hydraulic control arrangement for a mobile machine
US6357230B1 (en) * 1999-12-16 2002-03-19 Caterpillar Inc. Hydraulic ride control system
JP2003532848A (en) * 2000-05-11 2003-11-05 マネスマン レックスオート アクチェンゲゼルシャフト Hydraulic control device
US7204086B2 (en) 2000-05-25 2007-04-17 J.C Bamford Excavators Limited Method of operating a hydraulic system for a loader machine
GB2365407B (en) 2000-05-25 2003-10-08 Bamford Excavators Ltd Hydraulic system for wheeled loader
DE10127486A1 (en) * 2001-06-07 2002-12-12 Claas Selbstfahr Erntemasch Relief device for a lifting device
DE10148962C1 (en) * 2001-10-04 2003-02-27 Hydac Technology Gmbh Hydraulic control device for digger or excavator has control block controlling switching valve in filling line and controlled valve in bypass line damping movement of hydraulic cylinders
DE102004033890A1 (en) 2004-07-13 2006-02-16 Bosch Rexroth Aktiengesellschaft Hydraulic control arrangement
DE102008043845A1 (en) * 2008-11-19 2010-05-20 Deere & Company, Moline Vehicle with loader
CN102587444B (en) * 2012-03-07 2014-07-30 浙江大学 Oil hybrid system for excavator with energy differential recovery
DE102018210471B3 (en) 2018-06-27 2019-09-05 Robert Bosch Gmbh Hoist suspension and hoist
DE102021208932B3 (en) 2021-08-16 2022-12-29 Robert Bosch Gesellschaft mit beschränkter Haftung stabilization module

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2856583C2 (en) * 1978-12-22 1985-02-07 Alfred Dipl.-Ing. 1000 Berlin Ulrich Three-point hitch for a tractor with a rear and / or front attachment
EP0381788A1 (en) * 1989-02-06 1990-08-16 KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. Vibration suppressing device for a wheeled construction equipment

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2856583C2 (en) * 1978-12-22 1985-02-07 Alfred Dipl.-Ing. 1000 Berlin Ulrich Three-point hitch for a tractor with a rear and / or front attachment
EP0381788A1 (en) * 1989-02-06 1990-08-16 KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. Vibration suppressing device for a wheeled construction equipment

Also Published As

Publication number Publication date
EP0388641B1 (en) 1993-04-28
DK0388641T3 (en) 1993-09-27
ATE88773T1 (en) 1993-05-15
ES2041061T3 (en) 1993-11-01
DE59001284D1 (en) 1993-06-03
DE3909205C1 (en) 1990-05-23
EP0388641A2 (en) 1990-09-26

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