GB1107714A - Hydraulic power transmission - Google Patents

Hydraulic power transmission

Info

Publication number
GB1107714A
GB1107714A GB16186/64A GB1618664A GB1107714A GB 1107714 A GB1107714 A GB 1107714A GB 16186/64 A GB16186/64 A GB 16186/64A GB 1618664 A GB1618664 A GB 1618664A GB 1107714 A GB1107714 A GB 1107714A
Authority
GB
United Kingdom
Prior art keywords
motor
pump
dead centre
centre position
shafts
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
GB16186/64A
Inventor
Dennis Ernest Lambeth
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.)
Dowty Technical Developments Ltd
Original Assignee
Dowty Technical Developments 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 Dowty Technical Developments Ltd filed Critical Dowty Technical Developments Ltd
Priority to GB16186/64A priority Critical patent/GB1107714A/en
Priority to US448297A priority patent/US3271957A/en
Publication of GB1107714A publication Critical patent/GB1107714A/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
    • F16H39/00—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution
    • F16H39/02—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motors at a distance from liquid pumps
    • 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
    • F16H39/00—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution
    • F16H39/04—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motor and pump combined in one unit
    • F16H39/06—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motor and pump combined in one unit pump and motor being of the same type
    • F16H39/08—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motor and pump combined in one unit pump and motor being of the same type each with one main shaft and provided with pistons reciprocating in cylinders
    • 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
    • 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
    • F16H61/427—Motor capacity control by mechanical control means, e.g. by levers or pedals
    • 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
    • F16H39/00—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution
    • F16H2039/005—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution comprising arrangements or layout to change the capacity of the motor or pump by moving the hydraulic chamber of the motor or pump

Abstract

1,107,714. Hydrostatic transmissions. DOWTY TECHNICAL DEVELOPMENTS Ltd. 13 April, 1965 [18 April, 1964], No. 16186/64. Heading F2C. An hydraulic power transmission comprises a tilting head pump 4 and motor 2 mounted on a support maintaining the parallel tilting axes MT, PT and the drive shafts 1, 3 in fixed relative positions, a link 7 being pivoted at MP, PP to extensions 8, 9 of the motor and pump. The pump is tilted from a dead centre position, wherein axes MP, PP, PT lie in a plane, angle PP, PT, MT is acute and distance MP-PT is greater than MT-PT, by a servo 11 and thus tilts motor 2. In this dead centre position the pump displacement is zero and motor displacement is maximum and the quadrilateral linkage MP-MT, MT-PT, PTPP, PP-MP is such that initial movements of pump 4 to either side of the dead centre position for forward and reverse drive, produces very small movements of the motor. The servo 11 normally has limited movement to prevent the motor reaching a dead centre position with axes MT, MP, PP in a plane, but should it be necessary for the motor to reach this position then a second servo acting on the motor is provided. The pump may have its zero displacement position not coinciding with the dead centre position so that the forward speed ratio may be greater than the reverse ratio. The link 7 may be a pair of rods housing the hydraulic connection between the pump and motor. In Fig. 3, (not shown), the linkage is as in Fig. 2, but the shafts 1, 3 are parallel. In Fig. 5, (not shown), the shafts are parallel with the angle PP, PT, MT obtuse as it is in, Fig. 7, (not shown), wherein the distance PTMP is less than MT-PT and the shafts 1, 3 are at right angles. The pump on motor, Fig. 8, (not shown), has an annular flange on the drive shaft having sockets for ball joints on the ends of pistons slidable in a block rotatably mounted in a head which can pivot relative to the flange. Reference has been directed by the Comptroller to Specifications 978,603; 979,532; 994,794 and 994,797.
GB16186/64A 1964-04-18 1964-04-18 Hydraulic power transmission Expired GB1107714A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB16186/64A GB1107714A (en) 1964-04-18 1964-04-18 Hydraulic power transmission
US448297A US3271957A (en) 1964-04-18 1965-04-15 Hydraulic apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB16186/64A GB1107714A (en) 1964-04-18 1964-04-18 Hydraulic power transmission

Publications (1)

Publication Number Publication Date
GB1107714A true GB1107714A (en) 1968-03-27

Family

ID=10072736

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16186/64A Expired GB1107714A (en) 1964-04-18 1964-04-18 Hydraulic power transmission

Country Status (2)

Country Link
US (1) US3271957A (en)
GB (1) GB1107714A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59915204D1 (en) * 1998-08-28 2010-10-28 Febit Holding Gmbh PROCESS FOR THE PRODUCTION OF BIOCHEMICAL REACTION CARRIER

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA693320A (en) * 1964-08-25 D. H. Andrews Thomas Hydrostatic power transmission
US3142963A (en) * 1961-10-26 1964-08-04 Dowty Hydraulic Units Ltd Hydraulic apparatus
US3143859A (en) * 1962-03-07 1964-08-11 Dowty Hydraulic Units Ltd Hydraulic apparatus
US3142964A (en) * 1962-03-07 1964-08-04 Dowty Hydraulic Units Ltd Hydraulic apparatus
GB962361A (en) * 1962-05-21 1964-07-01 Dowty Technical Dev Ltd Hydrostatic drives
GB978603A (en) * 1962-06-22 1964-12-23 Dowty Technical Dev Ltd Hydrostatic power transmission
US3213619A (en) * 1964-04-22 1965-10-26 Ford Motor Co Hydrostatic transmission

Also Published As

Publication number Publication date
US3271957A (en) 1966-09-13

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