DE3464083D1 - Hydraulic control system for the steering and power hydraulics of vehicles - Google Patents

Hydraulic control system for the steering and power hydraulics of vehicles

Info

Publication number
DE3464083D1
DE3464083D1 DE8484103939T DE3464083T DE3464083D1 DE 3464083 D1 DE3464083 D1 DE 3464083D1 DE 8484103939 T DE8484103939 T DE 8484103939T DE 3464083 T DE3464083 T DE 3464083T DE 3464083 D1 DE3464083 D1 DE 3464083D1
Authority
DE
Germany
Prior art keywords
valve
hydraulic
pressure fluid
distributing
power
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
Application number
DE8484103939T
Other languages
German (de)
Inventor
Heribert 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 DE8484103939T priority Critical patent/DE3464083D1/en
Application granted granted Critical
Publication of DE3464083D1 publication Critical patent/DE3464083D1/en
Expired 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
    • F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
    • 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20576—Systems with pumps with multiple pumps
    • 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
    • F15B2211/30505—Non-return valves, i.e. check 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
    • F15B2211/31—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
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40523—Flow control characterised by the type of flow control means or valve with flow dividers
    • F15B2211/4053—Flow control characterised by the type of flow control means or valve with flow dividers using 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
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41554—Flow control characterised by the connections of the flow control means in the circuit being connected to a return line and a 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
    • F15B2211/40—Flow control
    • F15B2211/42—Flow control characterised by the type of actuation
    • F15B2211/428—Flow control characterised by the type of actuation actuated by fluid 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
    • F15B2211/40—Flow control
    • F15B2211/46—Control of flow in the return line, i.e. meter-out 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7142—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups
    • 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
    • F15B2211/781—Control of multiple output members one or more output members having priority

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Steering Mechanism (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

1. A hydraulic control system for the steering and other hydraulically energized equipment - including a controllable power lift (18, 19, 32) - of a motor vehicle, particularly of a tractor, the system comprising two hydraulic circuits serving to feed pressure fluid to the hydraulically operable devices, each circuit including its respective hydraulic pump (1, 2) and both being interconnectable by actuating a sequence valve (37), in which the hydraulic pump (1) of the first circuit is arranged to feed pressure fluid to a hydraulic power steering device (8) via an element (10) adapted to accord priority to supplying this device, in which any pressure fluid not required for steering is arranged to flow via one or more distributing valves (16) for the other consuming devices to the - subsequent - power lift (19), and in which the second hydraulic circuit's hydraulic pump (2) communicates, if pressure fluid is not required, via the sequence valve (37) with a pressure fluid reservoir (7), characterized in that a duct (50) of the second hydraulic circuit includes at least one distributing valve (52) which serves to feed pressure fluid to the other consuming devices, which is located between the hydraulic pump (2) and the sequence valve (37) and which is provided, like the other distributing valve (16), with a neutral passage, that the outlet of the first mentioned distributing valve's (52) neutral passage is connected via a nonreturn valve (53) to the inlet of the distributing valve (16) of the first hydraulic circuit, that the sequence valve (37) while normally connecting the outlet of the first-mentioned distributing valve's (52) neutral passage with the reservoir (7) closes this by-pass if either the distributing valve (16) of the first hydraulic circuit or a power-lift control valve (20) is actuated, that the power-lift control valve (20) is arranged to be actuated by a pilot valve (32), that the pilot pressure for the control valve (20) is also simultaneously transmitted to the sequence valve (37) so as to urge the latter towards its closing position, and in that the transmission of the pilot pressure to the sequence valve (37) is effected via a flow-inhibiting throttling member (throttling relief valves 44, 45).
DE8484103939T 1983-05-28 1984-04-09 Hydraulic control system for the steering and power hydraulics of vehicles Expired DE3464083D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8484103939T DE3464083D1 (en) 1983-05-28 1984-04-09 Hydraulic control system for the steering and power hydraulics of vehicles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833319533 DE3319533A1 (en) 1983-05-28 1983-05-28 HYDRAULIC CONTROL SYSTEM FOR THE STEERING AND WORKING HYDRAULICS ON VEHICLES
DE8484103939T DE3464083D1 (en) 1983-05-28 1984-04-09 Hydraulic control system for the steering and power hydraulics of vehicles

Publications (1)

Publication Number Publication Date
DE3464083D1 true DE3464083D1 (en) 1987-07-09

Family

ID=6200219

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19833319533 Withdrawn DE3319533A1 (en) 1983-05-28 1983-05-28 HYDRAULIC CONTROL SYSTEM FOR THE STEERING AND WORKING HYDRAULICS ON VEHICLES
DE8484103939T Expired DE3464083D1 (en) 1983-05-28 1984-04-09 Hydraulic control system for the steering and power hydraulics of vehicles

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE19833319533 Withdrawn DE3319533A1 (en) 1983-05-28 1983-05-28 HYDRAULIC CONTROL SYSTEM FOR THE STEERING AND WORKING HYDRAULICS ON VEHICLES

Country Status (3)

Country Link
EP (1) EP0129652B1 (en)
AT (1) ATE27640T1 (en)
DE (2) DE3319533A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5332053A (en) * 1993-01-26 1994-07-26 Aquilon Technologies Inc. Hydraulic drive system
CN110206776A (en) * 2019-07-16 2019-09-06 郑州宇通重工有限公司 A kind of hydraulic pressure maintaining and self-unloading energy conservation valve group
IT202100010577A1 (en) * 2021-04-27 2022-10-27 Cnh Ind Italia Spa HYDRAULIC CIRCUIT FOR AN AGRICULTURAL VEHICLE EQUIPPED WITH AN ANTI-SATURATION SYSTEM AND ANTI-SATURATION CONTROL METHOD
IT202100010601A1 (en) * 2021-04-27 2022-10-27 Cnh Ind Italia Spa HYDRAULIC CIRCUIT FOR AN AGRICULTURAL VEHICLE EQUIPPED WITH AN ANTI-SATURATION SYSTEM AND ANTI-SATURATION CONTROL METHOD

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3448576A (en) * 1967-08-17 1969-06-10 Westinghouse Air Brake Co Fluid control system
FR2039123A1 (en) * 1969-12-19 1971-01-15 Poclain Sa
DE2437262B2 (en) * 1974-08-02 1976-09-02 Klöckner-Humboldt-Deutz AG, 5000 Köln HYDRAULIC CONTROL DEVICE FOR AN AGRICULTURAL VEHICLE
DE2458897A1 (en) * 1974-12-12 1976-06-24 Int Harvester Co ELECTRICAL CONTROL DEVICE FOR DISTRIBUTION OF PRESSURE LIQUID FROM A PRESSURE FLUID SOURCE TO SEVERAL DIFFERENT RANKING HYDRAULIC SYSTEMS
DE2625101C2 (en) * 1976-06-04 1985-11-14 Robert Bosch Gmbh, 7000 Stuttgart Hydraulic control device for the volume flow-dependent distribution of hydraulic fluid between two systems
DE2644717A1 (en) * 1976-10-04 1978-04-06 Abex Gmbh Hydraulic control system for articulated loader - has pressure compensated flow control valve with sensor operated pressure limiter
DE2837605A1 (en) * 1978-08-29 1980-03-06 Kloeckner Humboldt Deutz Ag Tractor hydraulic power lift controller - is supplied by the hydraulic circuits each with main control plunger both coupled to pre-control plunger, one via delay element
DE2855749A1 (en) * 1978-12-22 1980-06-26 Int Harvester Co HYDRAULIC CONTROL DEVICE FOR DISTRIBUTING PRESSURE LIQUID AT LEAST ONE, IN PARTICULAR, FROM TWO PRESSURE LIQUID SOURCES TO SEVERAL VARIOUS CONSUMERS
DE3237019C2 (en) * 1981-10-07 1994-07-28 Linde Ag Lift truck with a steering system with hydrostatic power steering system

Also Published As

Publication number Publication date
EP0129652B1 (en) 1987-06-03
DE3319533A1 (en) 1984-11-29
EP0129652A1 (en) 1985-01-02
ATE27640T1 (en) 1987-06-15

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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