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SE7510659L - HYDRAULIC LOAD SENSITIVE, PRESSURE AND RIVER COMPENSATORY SYSTEM - Google Patents

HYDRAULIC LOAD SENSITIVE, PRESSURE AND RIVER COMPENSATORY SYSTEM

Info

Publication number
SE7510659L
SE7510659L SE7510659A SE7510659A SE7510659L SE 7510659 L SE7510659 L SE 7510659L SE 7510659 A SE7510659 A SE 7510659A SE 7510659 A SE7510659 A SE 7510659A SE 7510659 L SE7510659 L SE 7510659L
Authority
SE
Sweden
Prior art keywords
pressure
valve
cylinder
pump
valves
Prior art date
Application number
SE7510659A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE414526B (en
Inventor
J E G Young
Original Assignee
Gen Signal Corp
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 Gen Signal Corp filed Critical Gen Signal Corp
Publication of SE7510659L publication Critical patent/SE7510659L/en
Publication of SE414526B publication Critical patent/SE414526B/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/46—Automatic regulation in accordance with output requirements
    • 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
    • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • F15B11/162—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for giving priority to particular servomotors or users
    • 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
    • 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
    • F15B2211/255—Flow control functions
    • 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
    • F15B2211/3053—In combination with a pressure compensating valve
    • F15B2211/30535—In combination with a pressure compensating valve the pressure compensating valve is arranged between pressure source and 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
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3111—Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed 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
    • F15B2211/45—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
    • F15B2211/70—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)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

1485887 Fluid-pressure servomotor systems GENERAL SIGNAL CORP 24 Sept 1975 [25 Sept 1974] 39146/75 Heading G3P An hydraulic system for selectively controlling operation of a plurality of hydraulic motors 10, 11 including a variable delivery pump 12 having a stroke control cylinder 13 and supplying fluid to the motors through respective control valves 14, 15 having variable restricting orifices 16 comprises pressure responsive flow dividing valve means 17 for delivering surplus flow from the valve 14 to the valve 15 and pressure and flow compensating valve means 18 responsive to a differential pressure across a variable orifice in the valve 15 for controlling the pressure in the cylinder 13 and hence the delivery of the pump 12. When the system is at rest, the valve 18 regulates the pump output to compensate for leakage losses. A further valve 19 connects the pump output direct to cylinder 13 to limit maximum pressure while conventional pressure relief valves are incorporated in each of the units 21, 22. The valves 14, 15 are in the form of reciprocable spools and the orifices 16 are provided by notches in the edges of the spool lands.
SE7510659A 1974-09-25 1975-09-23 HYDRAULIC LOAD SENSITIVE SYSTEM FOR COMPENSATION OF PRESSURE AND FLOW FOR SELECTIVE REGULATORY MANOVERING OF A MULTIPLE HYDRAULIC MOTORS IN SERIES SE414526B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US508977A US3908375A (en) 1974-09-25 1974-09-25 Hydraulic load sensitive pressure and flow compensating system

Publications (2)

Publication Number Publication Date
SE7510659L true SE7510659L (en) 1976-03-26
SE414526B SE414526B (en) 1980-08-04

Family

ID=24024837

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7510659A SE414526B (en) 1974-09-25 1975-09-23 HYDRAULIC LOAD SENSITIVE SYSTEM FOR COMPENSATION OF PRESSURE AND FLOW FOR SELECTIVE REGULATORY MANOVERING OF A MULTIPLE HYDRAULIC MOTORS IN SERIES

Country Status (8)

Country Link
US (1) US3908375A (en)
JP (1) JPS6110686B2 (en)
CA (1) CA1028922A (en)
DE (1) DE2542809A1 (en)
FR (1) FR2286299A1 (en)
GB (1) GB1485887A (en)
IT (1) IT1047558B (en)
SE (1) SE414526B (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987623A (en) * 1976-01-23 1976-10-26 Caterpillar Tractor Co. Controlled priority fluid system of a crawler type vehicle
US4011721A (en) * 1976-04-14 1977-03-15 Eaton Corporation Fluid control system utilizing pressure drop valve
US4074528A (en) * 1976-08-02 1978-02-21 J. I. Case Company Hydraulic control system with priority flow control
US4116587A (en) * 1977-10-12 1978-09-26 Caterpillar Tractor Co. Load plus differential pressure compensator pump control assembly
US4199942A (en) * 1978-09-28 1980-04-29 Eaton Corporation Load sensing control for hydraulic system
US4479349A (en) * 1981-11-19 1984-10-30 General Signal Corporation Hydraulic control system
DE3789230T2 (en) * 1987-01-30 1994-06-09 Komatsu Mfg Co Ltd CONTROL UNIT.
ATE247234T1 (en) * 1999-07-10 2003-08-15 Bosch Rexroth Ag DIRECTIONAL VALVE DISC, ESPECIALLY FOR A MOBILE WORK DEVICE
US7036625B2 (en) * 2002-11-08 2006-05-02 Nmhg Oregon, Inc. Integrated hydraulic control system
CA2725851C (en) * 2010-12-17 2014-10-21 Ace, Accent Controles Electroniques Inc. Load sensing hydraulic system
EP2891806A1 (en) * 2014-01-03 2015-07-08 Danfoss Power Solutions Aps A hydraulic valve arrangement
JP6338428B2 (en) * 2014-04-11 2018-06-06 Ｋｙｂ株式会社 Valve structure
DE102014208019B4 (en) * 2014-04-29 2025-01-30 Robert Bosch Gmbh Hydraulic control arrangement for several actuators
JP6043409B1 (en) * 2015-07-10 2016-12-14 Ｋｙｂ株式会社 Rod member and valve device
ITUB20153574A1 (en) * 2015-09-11 2017-03-11 Studio Tecnico 6M Srl LOAD SENSING CONTROL DEVICE FOR PRIORITY VALVES

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2799995A (en) * 1954-04-13 1957-07-23 Vickers Inc Power transmission
US2892311A (en) * 1958-01-08 1959-06-30 Deere & Co Hydraulic apparatus
US3465519A (en) * 1967-08-18 1969-09-09 Webster Electric Co Inc Hydraulic flow controlling apparatus
US3602104A (en) * 1969-07-08 1971-08-31 Eaton Yale & Towne Pressure-compensated flow control
US3878679A (en) * 1973-08-30 1975-04-22 Gen Signal Corp Compensated multi-function hydraulic system

Also Published As

Publication number Publication date
FR2286299B1 (en) 1979-06-29
GB1485887A (en) 1977-09-14
DE2542809A1 (en) 1976-04-08
CA1028922A (en) 1978-04-04
SE414526B (en) 1980-08-04
US3908375A (en) 1975-09-30
JPS5157380A (en) 1976-05-19
FR2286299A1 (en) 1976-04-23
JPS6110686B2 (en) 1986-03-31
IT1047558B (en) 1980-10-20

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