FR2431386A1 - IMPROVEMENTS TO DRIVE SYSTEMS WITH HYDROSTATIC TRANSMISSIONS - Google Patents

IMPROVEMENTS TO DRIVE SYSTEMS WITH HYDROSTATIC TRANSMISSIONS

Info

Publication number
FR2431386A1
FR2431386A1 FR7918806A FR7918806A FR2431386A1 FR 2431386 A1 FR2431386 A1 FR 2431386A1 FR 7918806 A FR7918806 A FR 7918806A FR 7918806 A FR7918806 A FR 7918806A FR 2431386 A1 FR2431386 A1 FR 2431386A1
Authority
FR
France
Prior art keywords
hydrostatic
transmissions
drive
drive system
hydrostatic transmissions
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.)
Granted
Application number
FR7918806A
Other languages
French (fr)
Other versions
FR2431386B1 (en
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.)
Eaton Corp
Original Assignee
Eaton 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
Priority claimed from US05/400,871 external-priority patent/US3988893A/en
Application filed by Eaton Corp filed Critical Eaton Corp
Publication of FR2431386A1 publication Critical patent/FR2431386A1/en
Application granted granted Critical
Publication of FR2431386B1 publication Critical patent/FR2431386B1/fr
Granted 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
    • F16H61/4157—Control of braking, e.g. preventing pump over-speeding when motor acts as a pump
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D11/00—Steering non-deflectable wheels; Steering endless tracks or the like
    • B62D11/02—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides
    • B62D11/06—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source
    • B62D11/10—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using gearings with differential power outputs on opposite sides, e.g. twin-differential or epicyclic gears
    • B62D11/14—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using gearings with differential power outputs on opposite sides, e.g. twin-differential or epicyclic gears differential power outputs being effected by additional power supply to one side, e.g. power originating from secondary power source
    • B62D11/18—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using gearings with differential power outputs on opposite sides, e.g. twin-differential or epicyclic gears differential power outputs being effected by additional power supply to one side, e.g. power originating from secondary power source the additional power supply being supplied hydraulically
    • 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
    • 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
    • F16H61/423—Motor 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
    • F16H61/42—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

Abstract

a. Système d'entraînement à transmissions hydrostatiques comprenant un moteur commun d'entraînement, deux transmissions hydrostatiques incluant chacune un groupe de pompage et un groupe moteur à débit variable relié au précedent par une bouche hydrostatique, une soupape commune de commande de vitesse et deux soupapes de commande de direction agissant sélectivement sur l'une ou sur l'autre des deux transmissions. b. Le système d'entraînement selon l'invention inclut deux pompes de charge 60, 62 alimentant chacune l'une des transmissions hydrostatiques 14, 16, ainsi que des moyens provoquant en cas d'abaissement anormal de la pression de charge le retour à l'état inopérant des deux transmissions et la mise en court-circuit de leurs boucles hydrostatiques respectives. c. Application notamment à l'entraînement des véhicules à chenilles.at. Hydrostatic transmission drive system comprising a common drive motor, two hydrostatic transmissions each including a pumping group and a variable flow motor group connected to the previous one by a hydrostatic mouth, a common speed control valve and two control valves. steering control acting selectively on one or the other of the two transmissions. b. The drive system according to the invention includes two charge pumps 60, 62 each supplying one of the hydrostatic transmissions 14, 16, as well as means causing, in the event of an abnormal drop in the charge pressure, the return to the pump. inoperative state of the two transmissions and the short-circuiting of their respective hydrostatic loops. vs. Application in particular to the drive of tracked vehicles.

FR7918806A 1973-09-26 1979-07-20 IMPROVEMENTS TO DRIVE SYSTEMS WITH HYDROSTATIC TRANSMISSIONS Granted FR2431386A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/400,871 US3988893A (en) 1972-04-28 1973-09-26 Hydrostatic transmission drive system

Publications (2)

Publication Number Publication Date
FR2431386A1 true FR2431386A1 (en) 1980-02-15
FR2431386B1 FR2431386B1 (en) 1983-06-24

Family

ID=23585359

Family Applications (3)

Application Number Title Priority Date Filing Date
FR7427581A Expired FR2257455B1 (en) 1973-09-26 1974-08-08
FR7918665A Granted FR2431387A1 (en) 1973-09-26 1979-07-19 IMPROVEMENTS TO DRIVE SYSTEMS WITH HYDROSTATIC TRANSMISSIONS
FR7918806A Granted FR2431386A1 (en) 1973-09-26 1979-07-20 IMPROVEMENTS TO DRIVE SYSTEMS WITH HYDROSTATIC TRANSMISSIONS

Family Applications Before (2)

Application Number Title Priority Date Filing Date
FR7427581A Expired FR2257455B1 (en) 1973-09-26 1974-08-08
FR7918665A Granted FR2431387A1 (en) 1973-09-26 1979-07-19 IMPROVEMENTS TO DRIVE SYSTEMS WITH HYDROSTATIC TRANSMISSIONS

Country Status (5)

Country Link
JP (3) JPS5939338B2 (en)
CA (1) CA1018044A (en)
DE (1) DE2446008A1 (en)
FR (3) FR2257455B1 (en)
GB (3) GB1468268A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4173867A (en) * 1978-02-27 1979-11-13 Sundstrand Corporation Transmission
JPS6158750U (en) * 1984-08-23 1986-04-19
AT390921B (en) * 1984-09-11 1990-07-25 Morwitzer Karl Hydraulic drive system for vehicles
JPH034821Y2 (en) * 1984-12-07 1991-02-07
DE3613661A1 (en) * 1986-04-23 1987-10-29 Krupp Gmbh Transporting caterpillar track
JPS63142441U (en) * 1987-03-12 1988-09-20
JP3621524B2 (en) * 1996-09-05 2005-02-16 ヤンマー農機株式会社 Hydraulic traveling farm machine
CN104648475A (en) * 2013-11-22 2015-05-27 湖北万山宏业汽车零部件有限公司 Electrohydraulic steering mechanism of steering wheel type tracked car

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3238723A (en) * 1964-02-17 1966-03-08 New York Air Brake Co Hydrostatic transmission
US3727402A (en) * 1971-06-30 1973-04-17 Eaton Corp Hydrostatic transmission speed and steering control system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB775698A (en) * 1953-11-18 1957-05-29 Galileo Off Improvements in constant power speed-varying hydraulic apparatus
DE1151443B (en) * 1959-04-22 1963-07-11 Int Harvester Co Hydrostatic transmission for motor vehicles
DE1137962B (en) * 1960-09-09 1962-10-11 Entwicklung Braking device for the output shaft of hydraulic torque converters, especially for motor vehicles
US3528243A (en) * 1967-06-14 1970-09-15 Caterpillar Tractor Co Relief and replenish package for a hydrostatic transmission
US3526288A (en) * 1967-06-14 1970-09-01 Caterpillar Tractor Co Hydrostatic transmission control system
US3659419A (en) * 1969-10-13 1972-05-02 Hitachi Construction Machinery Hydraulic circuit of hydraulically driven vehicle
DE2001701C3 (en) * 1970-01-15 1979-04-05 Linde Ag, 6200 Wiesbaden Setting device for the remote control of a continuously adjustable hydrostatic transmission
US3771310A (en) * 1972-01-31 1973-11-13 Caterpillar Tractor Co Hydrostatic drive control system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3238723A (en) * 1964-02-17 1966-03-08 New York Air Brake Co Hydrostatic transmission
US3727402A (en) * 1971-06-30 1973-04-17 Eaton Corp Hydrostatic transmission speed and steering control system

Also Published As

Publication number Publication date
JPS5059926A (en) 1975-05-23
FR2257455A1 (en) 1975-08-08
GB1468269A (en) 1977-03-23
FR2431387B1 (en) 1983-06-17
CA1018044A (en) 1977-09-27
JPS57161353A (en) 1982-10-04
FR2257455B1 (en) 1982-01-15
JPS5939338B2 (en) 1984-09-22
GB1468268A (en) 1977-03-23
FR2431387A1 (en) 1980-02-15
JPS57161354A (en) 1982-10-04
GB1468267A (en) 1977-03-23
FR2431386B1 (en) 1983-06-24
DE2446008A1 (en) 1975-05-22

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