GB2006899A - Power Transmission Mechanisms - Google Patents

Power Transmission Mechanisms

Info

Publication number
GB2006899A
GB2006899A GB7841025A GB7841025A GB2006899A GB 2006899 A GB2006899 A GB 2006899A GB 7841025 A GB7841025 A GB 7841025A GB 7841025 A GB7841025 A GB 7841025A GB 2006899 A GB2006899 A GB 2006899A
Authority
GB
United Kingdom
Prior art keywords
shaft
power transmission
gearing
null
speed
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
GB7841025A
Other versions
GB2006899B (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.)
Brown Gear Industries Ltd David Shipley G A
MCKNIGHT J
David Brown Gear Industries Ltd
Original Assignee
Brown Gear Industries Ltd David Shipley G A
MCKNIGHT J
David Brown Gear 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 Brown Gear Industries Ltd David Shipley G A, MCKNIGHT J, David Brown Gear Industries Ltd filed Critical Brown Gear Industries Ltd David Shipley G A
Priority to GB7841025A priority Critical patent/GB2006899B/en
Publication of GB2006899A publication Critical patent/GB2006899A/en
Application granted granted Critical
Publication of GB2006899B publication Critical patent/GB2006899B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B62D11/12—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 using separate change-speed gearings

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Steering Controls (AREA)

Abstract

A variable-ratio power transmission mechanism 10 having two output shafts 16, 17 for driving respective wheels or tracks at opposite sides of a heavy off-the-road vehicle, and having a steering mechanism for varying the relative rotational speeds of said shafts, is known. Where the steering mechanism includes a null shaft 30 which is not driven when straight-line travel is required, said shaft has been driveable by hydrostatic means, but these have sometimes proved unreliable. It is therefore proposed to drive the null shaft 30 by mechanical two-speed gearing driven from the input of the power transmission mechanism 10. The null shaft 30 is selectively driveable by said gearing in either direction of rotation through the appropriate one of two progressively engaging clutches 47, 58 until it attains a first speed, and an epicyclic reduction gear 42 in said gearing is then locked up to drive the null shaft 30 in the same direction at a higher speed. <IMAGE>
GB7841025A 1977-10-25 1978-10-18 Power transmission mechanisms Expired GB2006899B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7841025A GB2006899B (en) 1977-10-25 1978-10-18 Power transmission mechanisms

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4427277 1977-10-25
GB7841025A GB2006899B (en) 1977-10-25 1978-10-18 Power transmission mechanisms

Publications (2)

Publication Number Publication Date
GB2006899A true GB2006899A (en) 1979-05-10
GB2006899B GB2006899B (en) 1982-04-28

Family

ID=26265365

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7841025A Expired GB2006899B (en) 1977-10-25 1978-10-18 Power transmission mechanisms

Country Status (1)

Country Link
GB (1) GB2006899B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2636289A1 (en) * 1988-09-14 1990-03-16 Equip Systemes Mecanismes TRANSMISSION FOR MOTOR VEHICLES FAST OR WITH NON-DIRECTING WHEELS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2636289A1 (en) * 1988-09-14 1990-03-16 Equip Systemes Mecanismes TRANSMISSION FOR MOTOR VEHICLES FAST OR WITH NON-DIRECTING WHEELS
EP0359654A1 (en) * 1988-09-14 1990-03-21 Societe D'equipements, Systemes Et Mecanismes Transmission for fast tracked or non-deflectable wheeled vehicles

Also Published As

Publication number Publication date
GB2006899B (en) 1982-04-28

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19951018