DE3873868D1 - HYDRAULIC CONTROL DEVICE FOR THE WORKING HYDRAULICS OF A AGRICULTURAL AND CONSTRUCTIVE VEHICLE. - Google Patents

HYDRAULIC CONTROL DEVICE FOR THE WORKING HYDRAULICS OF A AGRICULTURAL AND CONSTRUCTIVE VEHICLE.

Info

Publication number
DE3873868D1
DE3873868D1 DE8888116284T DE3873868T DE3873868D1 DE 3873868 D1 DE3873868 D1 DE 3873868D1 DE 8888116284 T DE8888116284 T DE 8888116284T DE 3873868 T DE3873868 T DE 3873868T DE 3873868 D1 DE3873868 D1 DE 3873868D1
Authority
DE
Germany
Prior art keywords
circuit
hydraulic control
agricultural
control device
working hydraulics
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.)
Expired - Fee Related
Application number
DE8888116284T
Other languages
German (de)
Inventor
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 DE8888116284T priority Critical patent/DE3873868D1/en
Application granted granted Critical
Publication of DE3873868D1 publication Critical patent/DE3873868D1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

The hydraulic circuit for the working attachments of the tractor has a main controller linked to the circuit by a slider valve. This is held in the operating position by a ratchet, which is released when the working pressure is reached in the attachment circuit. A time delay retards the resetting of the valve. The time delay includes a delay relay and a hystulic switching circuit. This islinked to the main circuit by a flow restriction and a non return valve. The ratchet is lifted by a hydraulic servo operated from the hydraulic control.
DE8888116284T 1987-10-02 1988-10-01 HYDRAULIC CONTROL DEVICE FOR THE WORKING HYDRAULICS OF A AGRICULTURAL AND CONSTRUCTIVE VEHICLE. Expired - Fee Related DE3873868D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8888116284T DE3873868D1 (en) 1987-10-02 1988-10-01 HYDRAULIC CONTROL DEVICE FOR THE WORKING HYDRAULICS OF A AGRICULTURAL AND CONSTRUCTIVE 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
DE8888116284T DE3873868D1 (en) 1987-10-02 1988-10-01 HYDRAULIC CONTROL DEVICE FOR THE WORKING HYDRAULICS OF A AGRICULTURAL AND CONSTRUCTIVE VEHICLE.

Publications (1)

Publication Number Publication Date
DE3873868D1 true DE3873868D1 (en) 1992-09-24

Family

ID=6337498

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19873733371 Withdrawn DE3733371A1 (en) 1987-10-02 1987-10-02 HYDRAULIC CONTROL DEVICE FOR THE WORKING HYDRAULICS OF A AGRICULTURAL AND CONSTRUCTIVE VEHICLE
DE8888116284T Expired - Fee Related DE3873868D1 (en) 1987-10-02 1988-10-01 HYDRAULIC CONTROL DEVICE FOR THE WORKING HYDRAULICS OF A AGRICULTURAL AND CONSTRUCTIVE VEHICLE.

Family Applications Before (1)

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

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

Family Cites Families (7)

* 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
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

Also Published As

Publication number Publication date
EP0310134A2 (en) 1989-04-05
EP0310134B1 (en) 1992-08-19
EP0310134A3 (en) 1990-04-25
DE3733371A1 (en) 1989-04-13
ATE79664T1 (en) 1992-09-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee