GB2001714A - Hydromechanical transmissions - Google Patents

Hydromechanical transmissions

Info

Publication number
GB2001714A
GB2001714A GB7829363A GB7829363A GB2001714A GB 2001714 A GB2001714 A GB 2001714A GB 7829363 A GB7829363 A GB 7829363A GB 7829363 A GB7829363 A GB 7829363A GB 2001714 A GB2001714 A GB 2001714A
Authority
GB
United Kingdom
Prior art keywords
sun
input
hydrostatic
planets
coaxial
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Withdrawn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
GB7829363A
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.)
Sundstrand Corp
Original Assignee
Sundstrand 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 Sundstrand Corp filed Critical Sundstrand Corp
Publication of GB2001714A publication Critical patent/GB2001714A/en
Withdrawn legal-status Critical Current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
    • F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
    • F16H47/02—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
    • F16H47/04—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion
    • 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
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
    • F16H37/0833—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths
    • F16H37/084—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths at least one power path being a continuously variable transmission, i.e. CVT
    • F16H2037/088—Power split variators with summing differentials, with the input of the CVT connected or connectable to the input shaft

Abstract

A hydromechanical transmission comprises two sets of planetary gears 27, 28 on a common carrier 30 fast with the output shaft 22, and a hydrostatic transmission comprising a variable displacement unit 35 driven by the input shaft 21 and a fixed displacement unit 36 driving a sun 25, the planets 27 meshing with the sun and with the planets 28 and the latter meshing with a ring gear 29 controlled by a brake B and with a sun 26 clutchable at F to the input shaft. Selective operation of the clutch and brake provides two modes of operation, and the addition of a further clutch controlling drive of the ring gear by the input provides for a third mode. The hydrostatic units may be coaxial with the planetaries and input and output shafts, as shown. Alternatively, the hydrostatic unit may be off-set, and the other components, including the further clutch, coaxial. <IMAGE>
GB7829363A 1977-08-01 1978-07-10 Hydromechanical transmissions Withdrawn GB2001714A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US82140177A 1977-08-01 1977-08-01

Publications (1)

Publication Number Publication Date
GB2001714A true GB2001714A (en) 1979-02-07

Family

ID=25233306

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7829363A Withdrawn GB2001714A (en) 1977-08-01 1978-07-10 Hydromechanical transmissions

Country Status (4)

Country Link
JP (1) JPS5445452A (en)
DE (1) DE2831971A1 (en)
FR (1) FR2399588A1 (en)
GB (1) GB2001714A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT406035B (en) * 1992-04-15 2000-01-25 Schreiner Joachim Travel drive for a machine
DE102004053254B3 (en) * 2004-11-04 2006-06-01 Lohmann & Stolterfoht Gmbh Gear arrangement with gear means for speed superposition
JP6346065B2 (en) 2014-10-22 2018-06-20 ヤンマー株式会社 Work vehicle

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3433095A (en) * 1966-10-21 1969-03-18 Gen Motors Corp Split power transmission
US3590658A (en) * 1967-09-28 1971-07-06 Robert M Tuck Power train
US3626787A (en) * 1969-11-24 1971-12-14 White Motor Corp Continuously variable transmission
US3969957A (en) * 1972-12-22 1976-07-20 Delalio George M Synchronously shiftable dual range planetary transmission with coaxial input shafts
DE2337627C2 (en) * 1973-07-24 1975-02-06 Hydromatik Gmbh, 7900 Ulm Infinitely adjustable mechanical-hydrostatic superimposition gear

Also Published As

Publication number Publication date
FR2399588A1 (en) 1979-03-02
JPS5445452A (en) 1979-04-10
DE2831971A1 (en) 1979-02-22

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)