FI891739A - FOERFARANDE OCH ANORDNING FOER ARBETSMASKIN. - Google Patents

FOERFARANDE OCH ANORDNING FOER ARBETSMASKIN. Download PDF

Info

Publication number
FI891739A
FI891739A FI891739A FI891739A FI891739A FI 891739 A FI891739 A FI 891739A FI 891739 A FI891739 A FI 891739A FI 891739 A FI891739 A FI 891739A FI 891739 A FI891739 A FI 891739A
Authority
FI
Finland
Prior art keywords
arbetsmaskin
anordning foer
och anordning
foerfarande och
foerfarande
Prior art date
Application number
FI891739A
Other languages
Finnish (fi)
Other versions
FI891739A0 (en
Inventor
Bertil Olofsson
Ola Carlqvist
Original Assignee
Akermans Verkstad Ab
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 Akermans Verkstad Ab filed Critical Akermans Verkstad Ab
Publication of FI891739A publication Critical patent/FI891739A/en
Publication of FI891739A0 publication Critical patent/FI891739A0/en

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
    • E02F9/2278—Hydraulic circuits
    • E02F9/2296—Systems with a variable displacement pump
    • 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
    • E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps
    • E02F9/2235—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps 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
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2282—Systems using center bypass type changeover valves
    • 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
    • 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
    • E02F9/2292—Systems with two or more pumps

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)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
FI891739A 1986-10-13 1989-04-12 FOERFARANDE OCH ANORDNING FOER ARBETSMASKIN. FI891739A0 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8604323A SE459686B (en) 1986-10-13 1986-10-13 PROCEDURE AND DEVICE FOR CHANGING THE MAXIMUM EASY ACCESSIBLE HYDRAULAR PRESSURE OF THE PUMP SYSTEM IN AN EXCAVATOR
PCT/SE1987/000460 WO1988002822A1 (en) 1986-10-13 1987-10-12 Method and device for a construction machine, particularly an excavator

Publications (2)

Publication Number Publication Date
FI891739A true FI891739A (en) 1989-04-12
FI891739A0 FI891739A0 (en) 1989-04-12

Family

ID=20365899

Family Applications (1)

Application Number Title Priority Date Filing Date
FI891739A FI891739A0 (en) 1986-10-13 1989-04-12 FOERFARANDE OCH ANORDNING FOER ARBETSMASKIN.

Country Status (5)

Country Link
EP (1) EP0327558A1 (en)
DK (1) DK319788A (en)
FI (1) FI891739A0 (en)
SE (1) SE459686B (en)
WO (1) WO1988002822A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3844398C2 (en) * 1988-12-30 1997-07-31 Rexroth Mannesmann Gmbh Hydraulic circuit for a variable pump
DE19947199A1 (en) * 1999-10-01 2001-04-05 Bosch Gmbh Robert Facility for controlling and monitoring pressure in a hydraulic consumer uses a pressure reducer to adjust a pressure set value and a pressure monitor to send out an electrical signal at a pressure fall below its set value level
US8596052B2 (en) * 2007-11-21 2013-12-03 Volvo Construction Equipment Ab Method for controlling a working machine
RU2458206C2 (en) * 2007-11-21 2012-08-10 Вольво Констракшн Эквипмент Аб Method of controlling working mechanism
EP3020874B1 (en) * 2014-11-12 2022-07-06 John Deere Forestry Oy A hydraulic control system for controlling a moveable device
JP7095287B2 (en) 2018-01-22 2022-07-05 コベルコ建機株式会社 Swivel hydraulic work machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1650771B2 (en) * 1968-03-13 1976-10-28 Linde Ag, 6200 Wiesbaden DRIVE UNIT FOR AT LEAST TWO CONSUMERS
US3826090A (en) * 1973-07-25 1974-07-30 Deere & Co Variable pressure hydraulic system
DE2413295B2 (en) * 1974-03-20 1978-02-02 Robert Bosch Gmbh, 7000 Stuttgart CONTROL DEVICE FOR AN ADJUSTABLE PUMP
US4094144A (en) * 1977-03-16 1978-06-13 Strojarske A Metalurgicke Zavody Hydraulic pressure regulating arrangement
DE3340332C2 (en) * 1983-11-08 1988-11-10 Hydromatik GmbH, 7915 Elchingen Power control device for a hydrostatic drive with flow rate adjustment

Also Published As

Publication number Publication date
SE8604323D0 (en) 1986-10-13
EP0327558A1 (en) 1989-08-16
WO1988002822A1 (en) 1988-04-21
DK319788A (en) 1988-08-10
SE459686B (en) 1989-07-24
DK319788D0 (en) 1988-06-09
FI891739A0 (en) 1989-04-12
SE8604323L (en) 1988-04-14

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MM Patent lapsed

Owner name: ÅKERMANS VERKSTAD AB