GB1351770A - Variable-speed and reverse gearbox - Google Patents

Variable-speed and reverse gearbox

Info

Publication number
GB1351770A
GB1351770A GB1351770DA GB1351770A GB 1351770 A GB1351770 A GB 1351770A GB 1351770D A GB1351770D A GB 1351770DA GB 1351770 A GB1351770 A GB 1351770A
Authority
GB
United Kingdom
Prior art keywords
wheel
countershaft
layshaft
synchro
shaft
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
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 IND
BROWN GEAR INDUSTRIES Ltd DAVID
Original Assignee
BROWN GEAR IND
BROWN GEAR INDUSTRIES Ltd DAVID
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 IND, BROWN GEAR INDUSTRIES Ltd DAVID filed Critical BROWN GEAR IND
Publication of GB1351770A publication Critical patent/GB1351770A/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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
    • F16H3/093—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts
    • F16H3/097—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts the input and output shafts being aligned on the same axis
    • 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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/085—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts with more than one output shaft
    • 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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H2003/0803—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts with countershafts coaxial with input or output shaft
    • 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
    • F16H2200/006—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising eight forward speeds
    • 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/0082—Transmissions for multiple ratios characterised by the number of reverse speeds
    • F16H2200/0086—Transmissions for multiple ratios characterised by the number of reverse speeds the gear ratios comprising two reverse speeds

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Transmissions (AREA)

Abstract

1351770 Change-speed gear DAVID BROWN GEAR INDUSTRIES Ltd 10 Oct 1972 [16 Oct 1971] 48233/71 Heading F2D A change-speed gear, which, in effect, combines an auxiliary two-speed gear with a fourspeed and reverse main gear to provide eight forward and two reverse ratios, comprises aligned input and output shafts 11, 13; a coaxial intermediate shaft in the form of a sleeve 16 rotatable on the output shaft, or of a separate shaft spacing input and output shafts; a layshaft 18 constantly driven by an input gear pair 24, 25, and providing direct and three reduced ratios to the intermediate shaft 16 through meshing wheel pairs 26 ... 31 selected by two double dog clutches 32, 33; and a parallel short countershaft 20, Fig. 2, driven either by a wheel 34 fast on the layshaft 18 meshing a wheel 35 clutched at 36 to the countershaft 20, or by a wheel 38 synchro-clutched at 43 to the intermediate shaft 16 and meshing a wheel 40 integral with the countershaft 20, the latter also having an integral wheel 41 meshing a wheel 42 synchro-clutched at 43 to the output shaft 13. With the countershaft clutch 36 engaged, the layshaft wheel 34 drives the countershaft 20 in the same direction as that of the input shaft 11, so that the double synchro-clutch 43 on the output shaft 13 provides two reverse ratios. With the countershaft clutch 36 disengaged, and the synchro-clutch 43 engaged with the wheel 38, the intermediate shaft 16 directly drives the output shaft 13 at any of the four layshaft ratios, whilst with the synchro-clutch 43 engaging the wheel 42, the intermediate shaft 16 drives the output 13 through the wheel pair 38, 40, countershaft 20 and wheel pair 41, 42, providing four additional ratios which may be all under-drive or may include over-drive depending on the sizes of the wheels 41, 42. A power take-off is clutched to the layshaft at 61.
GB1351770D 1971-10-16 1971-10-16 Variable-speed and reverse gearbox Expired GB1351770A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4823371 1971-10-16

Publications (1)

Publication Number Publication Date
GB1351770A true GB1351770A (en) 1974-05-01

Family

ID=10447850

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1351770D Expired GB1351770A (en) 1971-10-16 1971-10-16 Variable-speed and reverse gearbox

Country Status (2)

Country Link
AU (1) AU449624B2 (en)
GB (1) GB1351770A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2422875A1 (en) * 1978-04-11 1979-11-09 Volvo Ab GEARBOX FOR VEHICLES
US4640141A (en) * 1983-06-07 1987-02-03 Getrag Getriebe- Und Zahnradfabrik Gmbh Gearbox-transmission with synchronized reverse-gear

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2422875A1 (en) * 1978-04-11 1979-11-09 Volvo Ab GEARBOX FOR VEHICLES
US4640141A (en) * 1983-06-07 1987-02-03 Getrag Getriebe- Und Zahnradfabrik Gmbh Gearbox-transmission with synchronized reverse-gear

Also Published As

Publication number Publication date
AU449624B2 (en) 1974-06-20
AU4744072A (en) 1974-04-11

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PLNP Patent lapsed through nonpayment of renewal fees