GB991434A - Improvements in and relating to drive transmission devices and, in particular, to planetary drive transmission devices - Google Patents

Improvements in and relating to drive transmission devices and, in particular, to planetary drive transmission devices

Info

Publication number
GB991434A
GB991434A GB3770762A GB3770762A GB991434A GB 991434 A GB991434 A GB 991434A GB 3770762 A GB3770762 A GB 3770762A GB 3770762 A GB3770762 A GB 3770762A GB 991434 A GB991434 A GB 991434A
Authority
GB
United Kingdom
Prior art keywords
clutch member
spring
torque
fluid pressure
clutch
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
GB3770762A
Inventor
Alan Salisbury Lamburn
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.)
Axel Wickman Transmissions Ltd
Original Assignee
Axel Wickman Transmissions 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 Axel Wickman Transmissions Ltd filed Critical Axel Wickman Transmissions Ltd
Priority to GB3770762A priority Critical patent/GB991434A/en
Publication of GB991434A publication Critical patent/GB991434A/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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D48/04—Control by fluid pressure providing power assistance
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/12—Details not specific to one of the before-mentioned types
    • F16D25/14—Fluid pressure control
    • 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
    • F16H61/02—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 characterised by the signals used
    • F16H61/0262—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 characterised by the signals used the signals being hydraulic
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0209—Control by fluid pressure characterised by fluid valves having control pistons, e.g. spools
    • 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
    • F16H2716/00—Control devices for speed-change mechanisms of planetary gearings, with toothed wheels remaining engaged, e.g. also for devices to simplify the control or for synchronising devices combined with control devices
    • F16H2716/04—Control devices for speed-change mechanisms of planetary gearings, with toothed wheels remaining engaged, e.g. also for devices to simplify the control or for synchronising devices combined with control devices the control being hydraulic or pneumatic

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Structure Of Transmissions (AREA)

Abstract

991,434. Controlling clutches; change-speed gearing; friction clutches. AXEL WICKMAN TRANSMISSIONS Ltd. Oct. 5, 1962, No. 37707/62. Headings F2C, F2D, F2E, F2F and F2L. The servo controlling means of a friction clutch is controlled by a torque responsive means to regulate the clutch engagement to a value at least sufficient for the transmitted torque. In a planetary overdrive gear having a plant carrier 53 splined to an input shaft 46, a ring gear 56 rigid with an output shaft 50 and a sun gear 57 splined to a cone clutch member 60 engageable with the ring gear 56 for direct drive or a brake 67 for overdrive, the clutch member 60 is urged to the direct drive condition by a series of springs 64. The spring force is modulated by fluid pressure in a cylinder 75 acting on a piston 65 interposed between the springs and the clutch member 60, the fluid pressure being inversely related to torque by a variable spring-rate relief valve 39; the valve being controlled by movement of a lever 36 from a collar 32 moved axially against a spring 29 by torque reaction in helical splines 59, connecting the sun gear with the clutch member, or by helical teeth in the planetary gearing. Rotation of a valve 71 covers fluid pressure to be admitted to an annular cylinder 73 to move a conical piston 67 to disengage the clutch member from the ring gear and to act as a brake on the clutch member for overdrive ratio. Under these conditions the engaging pressure of the brake is still determined by the balance of loading of the springs 64 and relief valve pressure in cylinder 75. The gearing may be used as an underdrive unit by reversing the roles of the input and output shafts. In simplified forms of the invention helical gearing, or helical splines, provide a torque sensing drive to a cone clutch which may be either spring engaged or spring released, the fluid pressure acting against the spring force.
GB3770762A 1962-10-05 1962-10-05 Improvements in and relating to drive transmission devices and, in particular, to planetary drive transmission devices Expired GB991434A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3770762A GB991434A (en) 1962-10-05 1962-10-05 Improvements in and relating to drive transmission devices and, in particular, to planetary drive transmission devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3770762A GB991434A (en) 1962-10-05 1962-10-05 Improvements in and relating to drive transmission devices and, in particular, to planetary drive transmission devices

Publications (1)

Publication Number Publication Date
GB991434A true GB991434A (en) 1965-05-05

Family

ID=10398426

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3770762A Expired GB991434A (en) 1962-10-05 1962-10-05 Improvements in and relating to drive transmission devices and, in particular, to planetary drive transmission devices

Country Status (1)

Country Link
GB (1) GB991434A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4403526A (en) * 1979-09-25 1983-09-13 Mobil Oil Corporation Manual transmission and hydraulically operated subtransmission
CZ305972B6 (en) * 2003-07-23 2016-06-01 Jasoň Hampl Continuously variable transmission

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4403526A (en) * 1979-09-25 1983-09-13 Mobil Oil Corporation Manual transmission and hydraulically operated subtransmission
CZ305972B6 (en) * 2003-07-23 2016-06-01 Jasoň Hampl Continuously variable transmission

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