EP0310134A3 - Hydraulic control system for vehicles used in agriculture and civil engineering - Google Patents

Hydraulic control system for vehicles used in agriculture and civil engineering Download PDF

Info

Publication number
EP0310134A3
EP0310134A3 EP88116284A EP88116284A EP0310134A3 EP 0310134 A3 EP0310134 A3 EP 0310134A3 EP 88116284 A EP88116284 A EP 88116284A EP 88116284 A EP88116284 A EP 88116284A EP 0310134 A3 EP0310134 A3 EP 0310134A3
Authority
EP
European Patent Office
Prior art keywords
control system
hydraulic control
agriculture
civil engineering
vehicles used
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
EP88116284A
Other languages
German (de)
Other versions
EP0310134A2 (en
EP0310134B1 (en
Inventor
Heribert Dipl.-Landw. Adams
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz 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 Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Priority to AT88116284T priority Critical patent/ATE79664T1/en
Publication of EP0310134A2 publication Critical patent/EP0310134A2/en
Publication of EP0310134A3 publication Critical patent/EP0310134A3/en
Application granted granted Critical
Publication of EP0310134B1 publication Critical patent/EP0310134B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • F15B2211/30585—Assemblies of multiple valves having a single valve for multiple 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
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
    • 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
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3138—Directional control characterised by the positions of the valve element the positions being discrete
    • 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
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/321—Directional control characterised by the type of actuation mechanically
    • F15B2211/322—Directional control characterised by the type of actuation mechanically actuated by biasing means, e.g. spring-actuated
    • 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
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/321—Directional control characterised by the type of actuation mechanically
    • F15B2211/324—Directional control characterised by the type of actuation mechanically manually, e.g. by using a lever or pedal
    • 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
    • F15B2211/355—Pilot pressure control
    • 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
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6306—Electronic controllers using input signals representing a pressure
    • F15B2211/6309—Electronic controllers using input signals representing a pressure the pressure being a pressure source supply 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
    • F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
    • F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve means
    • 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
    • F15B2211/67—Methods for controlling pilot 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders

Abstract

Hydraulic control system for a tractor, with a control unit (24) for the power lift with at least one directional control valve (1) connected in the supply line (22, 23) to the control unit (24) and having neutral circulation for the pressure fluid, the directional control valve (1) serving to switch a consuming device on or off and being provided with a detent (6) which can be engaged automatically by spring force and disengaged by pressure fluid and, after an operation at the consuming device is complete, can in each case be unlocked in a delayed manner by an electro-hydraulic switching device (35 or 50). <IMAGE>
EP88116284A 1987-10-02 1988-10-01 Hydraulic control system for vehicles used in agriculture and civil engineering Expired - Lifetime EP0310134B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88116284T ATE79664T1 (en) 1987-10-02 1988-10-01 HYDRAULIC CONTROL DEVICE FOR THE WORKING HYDRAULICS OF AN AGRICULTURAL AND CONSTRUCTION VEHICLE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873733371 DE3733371A1 (en) 1987-10-02 1987-10-02 HYDRAULIC CONTROL DEVICE FOR THE WORKING HYDRAULICS OF A AGRICULTURAL AND CONSTRUCTIVE VEHICLE
DE3733371 1987-10-02

Publications (3)

Publication Number Publication Date
EP0310134A2 EP0310134A2 (en) 1989-04-05
EP0310134A3 true EP0310134A3 (en) 1990-04-25
EP0310134B1 EP0310134B1 (en) 1992-08-19

Family

ID=6337498

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88116284A Expired - Lifetime EP0310134B1 (en) 1987-10-02 1988-10-01 Hydraulic control system for vehicles used in agriculture and civil engineering

Country Status (3)

Country Link
EP (1) EP0310134B1 (en)
AT (1) ATE79664T1 (en)
DE (2) DE3733371A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2440949A (en) * 2006-08-15 2008-02-20 Agco Gmbh Spool valve
DE102008042386A1 (en) * 2008-09-26 2010-04-08 Zf Friedrichshafen Ag Locking device for a valve spool
CN101660551B (en) * 2009-09-25 2011-08-24 中国北方车辆研究所 Oil gas suspension hydraulic locking device
CN103352889B (en) * 2013-07-08 2015-07-01 太原理工大学 Method for buffering hydraulic system shock of crawler loader

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3646968A (en) * 1970-09-30 1972-03-07 Sperry Rand Corp Power transmission valve with detent
US3716075A (en) * 1971-10-12 1973-02-13 Parker Hannifin Corp Power assist mechanism for fluid control valves
US4195551A (en) * 1977-06-23 1980-04-01 Gresen Manufacturing Company Hydraulic control valve including electromagnetic detent
DE3125482A1 (en) * 1981-06-29 1983-01-13 Günter Till Präzisionsmechanik, 3330 Helmstedt Control valve

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3203465A1 (en) * 1982-02-03 1983-08-11 Klöckner-Humboldt-Deutz AG, 5000 Köln PRINTING MEDIUM CIRCUIT, IN PARTICULAR FOR A MOWING MACHINE
DE8311270U1 (en) * 1982-04-16 1983-11-17 Steyr-Daimler-Puch AG, 1011 Wien Device for actuating the hydraulic piston drive of an additional device, in particular for agricultural tractors
DE3334253A1 (en) * 1983-09-22 1985-04-04 Klöckner-Humboldt-Deutz AG, 5000 Köln HYDRAULIC CONTROL DEVICE FOR WORKING HYDRAULICS OF TRACTORS

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3646968A (en) * 1970-09-30 1972-03-07 Sperry Rand Corp Power transmission valve with detent
US3716075A (en) * 1971-10-12 1973-02-13 Parker Hannifin Corp Power assist mechanism for fluid control valves
US4195551A (en) * 1977-06-23 1980-04-01 Gresen Manufacturing Company Hydraulic control valve including electromagnetic detent
DE3125482A1 (en) * 1981-06-29 1983-01-13 Günter Till Präzisionsmechanik, 3330 Helmstedt Control valve

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
Landtechnik, Band 38, Nr. 6 1983, Hannover W. Kötter "Anforderungen an hydraulische Zusatzventile für Ackerschlepper" Seiten 238-242 *
Ölhydraulik und Pneumatik, Band 22, Nr. 9 1978, Mainz Seiten 511-514 H. Harms, B. Scheuffler: "Zur Entwicklung der Hydrostatik in Landmaschinen und Ackerschleppern" *
Ölhydraulik und Pneumatik, Band 28, Nr. 5 1984, Mainz W. Kötter "Anforderungen an hydraulische Zusatzventile für Ackerschlepper" Seiten 325-329 *
Ölhydraulik und Pneumatik, Band 30, Nr. 11 1986, Mainz, Seiten 815-820 H. Garbers "Belastungsgrössen und Leistungsbilanzen von Schlepperhydraulik-Systemen" *

Also Published As

Publication number Publication date
ATE79664T1 (en) 1992-09-15
DE3873868D1 (en) 1992-09-24
DE3733371A1 (en) 1989-04-13
EP0310134A2 (en) 1989-04-05
EP0310134B1 (en) 1992-08-19

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