EP1541773A3 - Wheel-type construction machine - Google Patents

Wheel-type construction machine Download PDF

Info

Publication number
EP1541773A3
EP1541773A3 EP04029058A EP04029058A EP1541773A3 EP 1541773 A3 EP1541773 A3 EP 1541773A3 EP 04029058 A EP04029058 A EP 04029058A EP 04029058 A EP04029058 A EP 04029058A EP 1541773 A3 EP1541773 A3 EP 1541773A3
Authority
EP
European Patent Office
Prior art keywords
tilt angle
maximum tolerable
posture
wheel
horizontal posture
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.)
Withdrawn
Application number
EP04029058A
Other languages
German (de)
French (fr)
Other versions
EP1541773A2 (en
Inventor
Masaaki Shisutemu K. Senta of Komatsu Imaizumi
Shinji Shisutemu K. Senta of Komatsu Ltd. Maeda
Yasuo Osaka Works of Komatsu Ltd Tomokane
Taiichir0 c/o Komatsu UK Ltd. Kitatani
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 EP1541773A2 publication Critical patent/EP1541773A2/en
Publication of EP1541773A3 publication Critical patent/EP1541773A3/en
Withdrawn legal-status Critical Current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
    • E02F9/2257—Vehicle levelling or suspension systems
    • 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
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
    • E02F9/2228—Control of flow rate; Load sensing arrangements using pressure-compensating valves including an electronic controller
    • 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
    • E02F9/24—Safety devices, e.g. for preventing overload

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

Overturning of a vehicle on an inclined road is prevented without the function of hydraulic suspension being impaired. When the current tilt angle  for the body (2) is equal to or smaller than the maximum tolerable tilt angle  m, the inflow and outflow of hydraulic oil for the respective hydraulic suspension cylinders (21) to (24) for the wheels (11) to (14) is made free. On the other hand, when the current tilt angle  for the body (2) exceeds the maximum tolerable tilt angle  m, the inflow and outflow of hydraulic oil for the respective hydraulic suspension cylinders (21) to (24) for the wheels (11) to (14) is locked. In a further invention, when it has been determined that the current tilt angle  for the body (2) exceeds the maximum tolerable tilt angle  m, the vehicle height is adjusted, and the posture of the body (2) is brought to near the horizontal posture so as to be equal to or smaller than the maximum tolerable tilt angle  m. In a still further invention, when it has been determined that the body (2) is tilted, the vehicle height is adjusted, and the posture of the body (2) is brought to near the horizontal posture until the body (2) is in the horizontal posture.
EP04029058A 2003-12-08 2004-12-08 Wheel-type construction machine Withdrawn EP1541773A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003409473 2003-12-08
JP2003409473 2003-12-08

Publications (2)

Publication Number Publication Date
EP1541773A2 EP1541773A2 (en) 2005-06-15
EP1541773A3 true EP1541773A3 (en) 2005-10-05

Family

ID=34510478

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04029058A Withdrawn EP1541773A3 (en) 2003-12-08 2004-12-08 Wheel-type construction machine

Country Status (1)

Country Link
EP (1) EP1541773A3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2419286B1 (en) * 2009-04-17 2015-01-28 Volvo Construction Equipment AB Vehicle and method for operating a vehicle
ITBZ20110007A1 (en) * 2011-02-22 2012-08-23 Martin Monsorno DETECTOR OF DANGERS OF TILTING AND CONTRASTING HAZARDS ROUTES FOR VEHICLES, IN PARTICULAR AGRICULTURALS.
US9399382B2 (en) 2014-02-03 2016-07-26 Cnh Industrial America Llc Roll-over protection system
CN104088317A (en) * 2014-07-12 2014-10-08 黄健 Vehicle-mounted stabilizing structure of wheel-type hydraulic excavator
JP2021148231A (en) * 2020-03-19 2021-09-27 株式会社小松製作所 Hydraulic control system for transmission

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3632416A1 (en) * 1986-09-24 1988-04-07 Schaeff Karl Gmbh & Co Centre pivot-steered work vehicle with height adjustable wheels
US5684698A (en) * 1994-04-15 1997-11-04 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Vehicle attitude and average height control apparatus
EP0919407A1 (en) * 1996-08-01 1999-06-02 Komatsu Ltd. Suspension device for excavating work vehicles and method of controlling same
JP2001334816A (en) * 2000-05-29 2001-12-04 Sumitomonacco Materials Handling Co Ltd Roll control system for industrial vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3632416A1 (en) * 1986-09-24 1988-04-07 Schaeff Karl Gmbh & Co Centre pivot-steered work vehicle with height adjustable wheels
US5684698A (en) * 1994-04-15 1997-11-04 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Vehicle attitude and average height control apparatus
EP0919407A1 (en) * 1996-08-01 1999-06-02 Komatsu Ltd. Suspension device for excavating work vehicles and method of controlling same
JP2001334816A (en) * 2000-05-29 2001-12-04 Sumitomonacco Materials Handling Co Ltd Roll control system for industrial vehicle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 04 4 August 2002 (2002-08-04) *

Also Published As

Publication number Publication date
EP1541773A2 (en) 2005-06-15

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