GB1079857A - Hydraulic transmission systems - Google Patents

Hydraulic transmission systems

Info

Publication number
GB1079857A
GB1079857A GB2183863A GB2183863A GB1079857A GB 1079857 A GB1079857 A GB 1079857A GB 2183863 A GB2183863 A GB 2183863A GB 2183863 A GB2183863 A GB 2183863A GB 1079857 A GB1079857 A GB 1079857A
Authority
GB
United Kingdom
Prior art keywords
pump
pressure
swash
plate
piston
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
GB2183863A
Inventor
Charles Montague Cor Pritchard
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
Joseph Lucas Industries Ltd
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 Lucas Industries Ltd, Joseph Lucas Industries Ltd filed Critical Lucas Industries Ltd
Priority to GB2183863A priority Critical patent/GB1079857A/en
Publication of GB1079857A publication Critical patent/GB1079857A/en
Expired legal-status Critical Current

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
    • F16H61/472—Automatic regulation in accordance with output requirements for achieving a target output torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/02—Driving gear
    • B66D1/08—Driving gear incorporating fluid motors
    • 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
    • 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
    • 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
    • F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
    • F16H61/433—Pump capacity control by fluid pressure control means
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/01—Winches, capstans or pivots
    • B66D2700/0125—Motor operated winches
    • B66D2700/0133—Fluid actuated

Abstract

1,079,857. Hydrostatic transmission control. JOSEPH LUCAS (INDUSTRIES) Ltd. June 1, 1964], May 31, 1963], No. 21838/63. Headings F2C and F2D. The angularity of the swash-plate 14 of a variable-capacity pump 18 feeding a fixedcapacity swash-plate motor driving a winch used, e.g., for docking a ship, is automatically adjusted by pressure of the working liquid so that both the ratio and direction of liquid flow through the motor can be varied to maintain constant working pressure. Pump swash-plate angle is controlled by a transverse piston 17 loaded on its upper face by pump delivery pressure 19, and on its larger lower face by a spring 18 and pump delivery pressure 19 reaching it through a restrictor 26, communicating also with a spill port 25, controlled through an adjustably spring-loaded lever 24, actuated by a piston 23 loaded by pump delivery pressure 19, any change in which thus varies the spill port opening and hence the rate of flow through the restrictor 26. This disturbs the pressure-balance on the ends of the piston 17 which then moves the swash-plate 14 to restore constant delivery pressure. Should excessive load on the winch cable reverse the motor, the latter will then act as a pump, and the working pressure, acting through the piston 17, will move the pump swash-plate 14 over centre to rererse the flow direction, whereupon the pump,. acting as a brake, restores working pressure to its constant value, thus maintaining constant cable tension.
GB2183863A 1963-05-31 1963-05-31 Hydraulic transmission systems Expired GB1079857A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2183863A GB1079857A (en) 1963-05-31 1963-05-31 Hydraulic transmission systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2183863A GB1079857A (en) 1963-05-31 1963-05-31 Hydraulic transmission systems

Publications (1)

Publication Number Publication Date
GB1079857A true GB1079857A (en) 1967-08-16

Family

ID=10169656

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2183863A Expired GB1079857A (en) 1963-05-31 1963-05-31 Hydraulic transmission systems

Country Status (1)

Country Link
GB (1) GB1079857A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE32403E (en) * 1970-08-03 1987-04-21 Dana Corporation Fluid device having interchangeable displacement control means
GB2276853A (en) * 1993-03-23 1994-10-12 Johnston Eng Ltd Exhauster fan system for road-sweeping vehicles
EP2975208A3 (en) * 2014-07-15 2016-04-27 BAUER Maschinen GmbH Construction machine and method for controlling a construction machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE32403E (en) * 1970-08-03 1987-04-21 Dana Corporation Fluid device having interchangeable displacement control means
GB2276853A (en) * 1993-03-23 1994-10-12 Johnston Eng Ltd Exhauster fan system for road-sweeping vehicles
US5419006A (en) * 1993-03-23 1995-05-30 Johnston Engineering Limited Exhauster fan systems
EP2975208A3 (en) * 2014-07-15 2016-04-27 BAUER Maschinen GmbH Construction machine and method for controlling a construction machine
EP2975208B1 (en) 2014-07-15 2019-03-20 BAUER Maschinen GmbH Construction machine and method for controlling a construction machine

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