GB1234416A - - Google Patents

Info

Publication number
GB1234416A
GB1234416A GB1234416DA GB1234416A GB 1234416 A GB1234416 A GB 1234416A GB 1234416D A GB1234416D A GB 1234416DA GB 1234416 A GB1234416 A GB 1234416A
Authority
GB
United Kingdom
Prior art keywords
output pressure
piston
valve
adjusting means
pressure
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
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 filed Critical
Publication of GB1234416A publication Critical patent/GB1234416A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/08—Regulating by delivery pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/26—Control
    • F04B1/30—Control of machines or pumps with rotary cylinder blocks
    • F04B1/32—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block
    • F04B1/324—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the swash plate
    • 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
    • F16H61/475—Automatic regulation in accordance with output requirements for achieving a target power, e.g. input power or output power

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Hydraulic Motors (AREA)
  • Control Of Fluid Gearings (AREA)

Abstract

1,234,416. Fluid-pressure servomotor systems. INTERNATIONAL BASIC ECONOMY CORP. Aug. 14, 1968 [Aug.25, 1967], No.38950/68. Heading G3P. The product of output pressure and volume per stroke of a variable displacement pump are maintained constant by a valve 28 controlling the fluidpressure applied to stroke adjusting means 14 and subjected to pump output pressure P, the valve acting against a loading means 45 through a lever 36 having a pivot 39 movable with the stroke adjusting means 14. The annular space 22 above a piston 19 on the stroke adjusting means 14 is connected by a pipe 23 with the output pressure of the pump and a supply port 25 of the valve 28 which connects the space 61 below the piston 19 either with the supply port 25 or with an exhaust port 31 in response to output pressure variations. The loading spring 45 is manually adjustable and may be replaced by a weight or by remotely controlled fluid-pressure acting on a piston. (For Figure see next page)
GB1234416D 1967-08-25 1968-08-14 Expired GB1234416A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1653385A DE1653385C3 (en) 1967-08-25 1967-08-25 Device for keeping the product of pressure and stroke volume constant in a positive displacement pump

Publications (1)

Publication Number Publication Date
GB1234416A true GB1234416A (en) 1971-06-03

Family

ID=6987426

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1234416D Expired GB1234416A (en) 1967-08-25 1968-08-14

Country Status (7)

Country Link
US (1) US3554671A (en)
JP (1) JPS4937927B1 (en)
AT (1) AT276955B (en)
CH (1) CH485122A (en)
DE (1) DE1653385C3 (en)
FR (1) FR1565961A (en)
GB (1) GB1234416A (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE29333E (en) * 1969-04-23 1977-08-02 Massey-Ferguson Services N.V. Hydraulic apparatus for regulating the flow of one or more pumps
DE2017656A1 (en) * 1969-04-23 1970-11-05 Pensa, Carlo, Esino Lario, Como (Italien) Hydraulic flow rate adjustment device for one or more pumps
DE2146586C3 (en) * 1971-09-17 1981-12-17 G.L. Rexroth Gmbh, 8770 Lohr Hydrostatic drive with constant tension control
US3861832A (en) * 1972-08-04 1975-01-21 Poclain Sa Pump power governor
SE373188B (en) * 1973-04-25 1975-01-27 Volvo Flygmotor Ab
GB1481043A (en) * 1974-06-10 1977-07-27 Paterson Candy Int Non-pulsing pumping apparatus
JPS5141818U (en) * 1974-09-20 1976-03-27
JPS5264429U (en) * 1975-11-06 1977-05-12
JPS5320736U (en) * 1976-07-31 1978-02-22
DE2737963C3 (en) * 1977-04-26 1981-03-19 Kurt Wilen-Wollerau Christiansen Volume regulator for hydraulic unit
DE2734933A1 (en) * 1977-08-03 1979-02-15 Linde Ag CONTROL DEVICE FOR AN AXIAL PISTON PUMP
DE2930106A1 (en) * 1979-07-25 1981-02-12 Linde Ag Hydraulic pump with differential piston - has auxiliary spring in-side bottom piston half, assisting return at zero position
DE2930139A1 (en) * 1979-07-25 1981-02-12 Linde Ag CONTROL DEVICE FOR A HYDROSTATIC TRANSMISSION OR A PISTON PUMP
DE2938088A1 (en) * 1979-09-20 1981-04-02 Linde Ag, 6200 Wiesbaden Control for hydrostatic piston pump - has unbalance between different piston ends counteracted by spring within sealed annulus supplied with control pressure
US4508011A (en) * 1982-04-02 1985-04-02 Abex Corporation Hydraulic axial piston machine
US4639195A (en) * 1984-01-19 1987-01-27 Linde Aktiengesellschaft Power control devices for hydrostatic pumps
DE3408105A1 (en) * 1984-03-05 1985-09-12 Hydromatik GmbH, 7915 Elchingen Summed-output regulating device for a hydrostatic system having at least two pumps or pump groups with variable volumetric flow rates and a common drive
US5241872A (en) * 1991-05-20 1993-09-07 Sauer Inc. Swashplate centering mechanism for a variable displacement pump
DE102007048316B4 (en) * 2007-10-09 2010-05-27 Danfoss A/S Hydraulic axial piston machine
JP6913527B2 (en) * 2017-06-22 2021-08-04 株式会社小松製作所 Hydraulic pumps and motors
DE102018212419A1 (en) * 2018-07-25 2020-01-30 Danfoss Power Solutions Gmbh & Co. Ohg TORQUE CONTROL AND RETURN DEVICE
DE102020211284A1 (en) * 2020-02-13 2021-08-19 Robert Bosch Gesellschaft mit beschränkter Haftung Hydrostatic axial piston machine in swash plate design

Also Published As

Publication number Publication date
AT276955B (en) 1969-12-10
FR1565961A (en) 1969-05-02
DE1653385A1 (en) 1970-08-27
JPS4937927B1 (en) 1974-10-14
US3554671A (en) 1971-01-12
CH485122A (en) 1970-01-31
DE1653385C3 (en) 1980-07-24
DE1653385B2 (en) 1979-09-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee