EP0279362A1 - Hydraulisches System - Google Patents

Hydraulisches System Download PDF

Info

Publication number
EP0279362A1
EP0279362A1 EP88102046A EP88102046A EP0279362A1 EP 0279362 A1 EP0279362 A1 EP 0279362A1 EP 88102046 A EP88102046 A EP 88102046A EP 88102046 A EP88102046 A EP 88102046A EP 0279362 A1 EP0279362 A1 EP 0279362A1
Authority
EP
European Patent Office
Prior art keywords
hydraulic
motors
compensating valve
valve assembly
pump
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
EP88102046A
Other languages
English (en)
French (fr)
Other versions
EP0279362B1 (de
Inventor
Steven Harold Johnson
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.)
Deere and Co
Original Assignee
Deere and Co
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 Deere and Co filed Critical Deere and Co
Publication of EP0279362A1 publication Critical patent/EP0279362A1/de
Application granted granted Critical
Publication of EP0279362B1 publication Critical patent/EP0279362B1/de
Expired legal-status Critical Current

Links

Images

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
    • E02F9/2253—Controlling the travelling speed of vehicles, e.g. adjusting travelling speed according to implement loads, control of hydrostatic transmission
    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/044—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out"
    • F15B11/0445—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out" with counterbalance valves, e.g. to prevent overrunning or for braking
    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/22—Synchronisation of the movement of two or more servomotors
    • 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
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/022—Flow-dividers; Priority valves
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50545—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using braking valves to maintain a back pressure
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/605—Load sensing circuits
    • F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7058—Rotary output members
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/78—Control of multiple output members
    • F15B2211/782—Concurrent control, e.g. synchronisation of two or more actuators

Definitions

  • the compensator valve assembly associated with the later opening directional control valve becomes dominated by the earlier opening and now high pressure compensator valve assembly, and tends to reduce flow to the hydraulic motor with which it is associated. Therefore, the hydraulic mo­tor associated with the first opening directional control valve moves faster than the motor associated with the la­ter opening directional control valve resulting in a turn­ing movement by the crawler.
  • the present invention overcomes or reduces this problem.
  • communication line 100 would prevent either compensating valve assembly 32 or 36 from dominating one another.
  • exhaust lines 84 and 102 even though coupled through line 98, would not affect operation of the compen­sating valve assemblies.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
  • Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
EP19880102046 1987-02-19 1988-02-12 Hydraulisches System Expired EP0279362B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US1631887A 1987-02-19 1987-02-19
US16318 1987-02-19

Publications (2)

Publication Number Publication Date
EP0279362A1 true EP0279362A1 (de) 1988-08-24
EP0279362B1 EP0279362B1 (de) 1990-12-05

Family

ID=21776536

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880102046 Expired EP0279362B1 (de) 1987-02-19 1988-02-12 Hydraulisches System

Country Status (4)

Country Link
EP (1) EP0279362B1 (de)
JP (1) JP2604399B2 (de)
CA (1) CA1274748A (de)
DE (1) DE3861194D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1338802A2 (de) * 2002-02-26 2003-08-27 Husco International, Inc. Hydraulische Steuereinrichtung zum Betreiben von zwei parallel angeordneten Aktuatoren

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0433454B1 (de) * 1989-05-24 1996-02-21 Kabushiki Kaisha Komatsu Seisakusho Hydraulische schaltungsvorrichtung
US5209063A (en) * 1989-05-24 1993-05-11 Kabushiki Kaisha Komatsu Seisakusho Hydraulic circuit utilizing a compensator pressure selecting value

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2912131A (en) * 1957-10-01 1959-11-10 Demag Baggerfabrik Gmbh Hydraulically operated machines
GB1035141A (en) * 1964-05-07 1966-07-06 Priestman Brothers Improvements relating to civil engineering machines
GB1044851A (en) * 1964-04-14 1966-10-05 Auxitra Sa Improvements in or relating to hydraulic systems for excavators
GB1131750A (en) * 1965-10-21 1968-10-23 Linde Ag Improvements in or relating to hydraulic drive systems
DE2336157A1 (de) * 1972-07-15 1974-01-24 Kubota Ltd Erdbaufahrzeug mit hydraulischer kraftuebertragung
US3960284A (en) * 1972-10-02 1976-06-01 American Hoist & Derrick Company Hydraulic backhoe circuitry
DE3525823A1 (de) * 1985-07-19 1987-01-29 Schmitz Soehne Gmbh Maschf Wegeabhaengige gleichlauf-drucksteuerung fuer zweiseitig arbeitende pressen, insbes. bundpressen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6244849Y2 (de) * 1981-02-02 1987-11-28
JPS5897030U (ja) * 1981-12-24 1983-07-01 株式会社小松製作所 油圧駆動車の走行用油圧回路

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2912131A (en) * 1957-10-01 1959-11-10 Demag Baggerfabrik Gmbh Hydraulically operated machines
GB1044851A (en) * 1964-04-14 1966-10-05 Auxitra Sa Improvements in or relating to hydraulic systems for excavators
GB1035141A (en) * 1964-05-07 1966-07-06 Priestman Brothers Improvements relating to civil engineering machines
GB1131750A (en) * 1965-10-21 1968-10-23 Linde Ag Improvements in or relating to hydraulic drive systems
DE2336157A1 (de) * 1972-07-15 1974-01-24 Kubota Ltd Erdbaufahrzeug mit hydraulischer kraftuebertragung
US3960284A (en) * 1972-10-02 1976-06-01 American Hoist & Derrick Company Hydraulic backhoe circuitry
DE3525823A1 (de) * 1985-07-19 1987-01-29 Schmitz Soehne Gmbh Maschf Wegeabhaengige gleichlauf-drucksteuerung fuer zweiseitig arbeitende pressen, insbes. bundpressen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MACHINE DESIGN, vol. 40, no. 13, 6th June 1968, pages 166-170, Columbus, Ohio, US; W. MEISEL: "Hydraulic actuators" *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1338802A2 (de) * 2002-02-26 2003-08-27 Husco International, Inc. Hydraulische Steuereinrichtung zum Betreiben von zwei parallel angeordneten Aktuatoren
EP1338802A3 (de) * 2002-02-26 2003-10-15 Husco International, Inc. Hydraulische Steuereinrichtung zum Betreiben von zwei parallel angeordneten Aktuatoren

Also Published As

Publication number Publication date
JPS63215467A (ja) 1988-09-07
DE3861194D1 (de) 1991-01-17
EP0279362B1 (de) 1990-12-05
CA1274748A (en) 1990-10-02
JP2604399B2 (ja) 1997-04-30

Similar Documents

Publication Publication Date Title
US9091281B2 (en) System for allocating fluid from multiple pumps to a plurality of hydraulic functions on a priority basis
EP0887476B1 (de) Hydraulisches Betätigungssystem für Baumaschinen
KR0132687B1 (ko) 토목, 건설기계의 유압회로장치
EP1995155B1 (de) Antriebsvorrichtung für Raupen-Baumaschinen
EP3006744B1 (de) Hydraulische antriebsvorrichtung für eine baumaschine
JP5669448B2 (ja) 掘削機用油圧駆動システム
EP0087748B1 (de) Hydraulikkreislauf für Baumaschinen
US4769991A (en) Balanced hydraulic propulsion system
US6176126B1 (en) Engine speed control system for construction machine
US6453585B1 (en) Hydraulic drive device of working machine
EP3686442B1 (de) Fluiddrucksteuerungsvorrichtung
EP0279362A1 (de) Hydraulisches System
US7607245B2 (en) Construction machine
JP4933299B2 (ja) 建設機械の油圧制御装置
EP0704628B1 (de) Einrichtung zur Vermeidung von Kavitation bei Motoren für hydraulische Systeme
JP3692009B2 (ja) 作業機械の制御装置
JP3511500B2 (ja) 建設機械の油圧回路
WO2023176733A1 (ja) 液圧駆動装置
JP2758335B2 (ja) 建機の油圧回路構造
JP2866238B2 (ja) 建設機械の油圧駆動装置
JP2831423B2 (ja) 土木・建設機械の油圧回路
JP3053987B2 (ja) 作業機の油圧回路構造
JPH1018357A (ja) 油圧機械の油圧再生回路
JP2022075402A (ja) 液圧駆動システム
JP2758334B2 (ja) 建機の油圧回路構造

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR IT

17P Request for examination filed

Effective date: 19881010

17Q First examination report despatched

Effective date: 19900412

ITF It: translation for a ep patent filed

Owner name: LENZI & C.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR IT

REF Corresponds to:

Ref document number: 3861194

Country of ref document: DE

Date of ref document: 19910117

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20020130

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20020219

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030902

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031031

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050212