FR2429347A1 - Control system for traction vehicle hydraulic attachments - has spool valve with restrictor characteristics and additional control features - Google Patents

Control system for traction vehicle hydraulic attachments - has spool valve with restrictor characteristics and additional control features

Info

Publication number
FR2429347A1
FR2429347A1 FR7916162A FR7916162A FR2429347A1 FR 2429347 A1 FR2429347 A1 FR 2429347A1 FR 7916162 A FR7916162 A FR 7916162A FR 7916162 A FR7916162 A FR 7916162A FR 2429347 A1 FR2429347 A1 FR 2429347A1
Authority
FR
France
Prior art keywords
control system
control
traction vehicle
vehicle hydraulic
restrictor
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.)
Withdrawn
Application number
FR7916162A
Other languages
French (fr)
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of FR2429347A1 publication Critical patent/FR2429347A1/en
Withdrawn legal-status Critical Current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
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • 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
    • F15B2211/2053—Type of pump
    • F15B2211/20538—Type of pump constant capacity
    • 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
    • F15B2211/30515—Load holding 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
    • F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
    • F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
    • F15B2211/31576—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having a single pressure source and a single output member
    • 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
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
    • 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
    • F15B2211/41509—Flow control characterised by the connections of the flow control means in the circuit being connected to a pressure source 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
    • F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow to the return line
    • 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
    • F15B2211/70—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
    • F15B2211/7051—Linear output members
    • F15B2211/7052—Single-acting 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
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members
    • F15B2211/7054—Having equal piston areas
    • 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)
  • Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)

Abstract

The control system is used in traction vehicle hydraulic system for actuating attached tools. Energy losses are low and the arrangement is relatively simple and can be readily fitted to existing control systems. The control element (37) of the flow regulator valve (15) has an additional control edge (41) which influences the control pipeline (43) when the connection between the pump (25) and the return flow path (35) is open. The pressure reducer valve is connected to a pipeline in the region between the pump and the flow regulator valve and the connecting channel is separated from the control system pipeline (43).
FR7916162A 1978-06-22 1979-06-22 Control system for traction vehicle hydraulic attachments - has spool valve with restrictor characteristics and additional control features Withdrawn FR2429347A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782827339 DE2827339A1 (en) 1978-06-22 1978-06-22 CONTROL DEVICE FOR HYDRAULIC POWER TRANSMISSION, ESPECIALLY FOR TRACTOR HYDRAULICS

Publications (1)

Publication Number Publication Date
FR2429347A1 true FR2429347A1 (en) 1980-01-18

Family

ID=6042416

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7916162A Withdrawn FR2429347A1 (en) 1978-06-22 1979-06-22 Control system for traction vehicle hydraulic attachments - has spool valve with restrictor characteristics and additional control features

Country Status (3)

Country Link
DE (1) DE2827339A1 (en)
FR (1) FR2429347A1 (en)
IT (1) IT1121411B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3345192A1 (en) * 1983-12-14 1985-06-27 Robert Bosch Gmbh, 7000 Stuttgart HYDRAULIC CONTROL DEVICE
DE3431104A1 (en) * 1984-08-24 1986-03-06 Robert Bosch Gmbh, 7000 Stuttgart HYDRAULIC CONTROL DEVICE

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1511987A (en) * 1966-03-04 1968-02-02 Bosch Gmbh Robert Distribution device with multiple valve, for limiting the flow rate and changing the flow direction of a pressurized fluid
DE1928896B1 (en) * 1969-06-06 1970-11-12 Internat Harvester Co Mbh Control device for a hydraulic power transmission, in particular for a tractor hydraulics
FR2359296A1 (en) * 1976-07-20 1978-02-17 Fiat Spa HYDRAULIC POWER SUPPLY FOR SEVERAL INDEPENDENT HYDRAULIC SERVO-CONTROLLED DEVICES

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1511987A (en) * 1966-03-04 1968-02-02 Bosch Gmbh Robert Distribution device with multiple valve, for limiting the flow rate and changing the flow direction of a pressurized fluid
DE1928896B1 (en) * 1969-06-06 1970-11-12 Internat Harvester Co Mbh Control device for a hydraulic power transmission, in particular for a tractor hydraulics
FR2359296A1 (en) * 1976-07-20 1978-02-17 Fiat Spa HYDRAULIC POWER SUPPLY FOR SEVERAL INDEPENDENT HYDRAULIC SERVO-CONTROLLED DEVICES

Also Published As

Publication number Publication date
DE2827339A1 (en) 1980-01-10
IT7923604A0 (en) 1979-06-15
IT1121411B (en) 1986-04-02

Similar Documents

Publication Publication Date Title
JPS6487901A (en) Fluid pressure control system
GB1350846A (en) Fluid flow rate control device
KR830007315A (en) Hydraulic control system with flow control automatic emergency pump
ES472950A1 (en) Hydraulic auxiliary power steering with energy supply arrangement
JPS5747240A (en) Two system hydraulic pressure control valve
GB1531175A (en) Hydraulic system for extremely cold environments
GB2003101A (en) Vehicle hydraulic systems
FR2429347A1 (en) Control system for traction vehicle hydraulic attachments - has spool valve with restrictor characteristics and additional control features
EP0265761A3 (en) Hydraulic systems
GB1492487A (en) Controlling brake flaps on aircraft
SE7706138L (en) RIVER CONTROL VALVE
ES8506144A1 (en) Fluid-sampling valve for a hydraulic system.
JPS5779369A (en) Three way valve type flow rate control valve
DE3375938D1 (en) Signal valve for pressure compensated system
ES480099A1 (en) Arrangement for a hydraulic brake booster
GB1497567A (en) Fluid valve devices
EP0077203A3 (en) Fluid flow control valve
GB1143273A (en) Hydraulic actuator control system
IE791596L (en) Coupling branch line to a main pressure line
GB1306866A (en) Hydraulic servo valve
FR2372980A1 (en) Hydraulic control system for servomotor - has variable frequency impulse generator to regulate flow valve in supply line connected to pressure vessel and throttled drain passage
ES8706232A1 (en) Pressure control servo device for a hydraulic installation, particularly for vehicle servo steering.
EP0297401A3 (en) Hydraulic control device
JPS57158161A (en) Control device for power steering system
FR2283342A1 (en) Hydraulic control valve arrangement - contains direction valves, pressure compensation valves, pre-control pressure monitors, back pressure valves

Legal Events

Date Code Title Description
RE Withdrawal of published application