GB1351770A - Variable-speed and reverse gearbox - Google Patents
Variable-speed and reverse gearboxInfo
- 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
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.
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)
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 |
-
1971
- 1971-10-16 GB GB1351770D patent/GB1351770A/en not_active Expired
-
1972
- 1972-10-05 AU AU47440/72A patent/AU449624B2/en not_active Expired
Cited By (2)
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 |
---|---|
AU4744072A (en) | 1974-04-11 |
AU449624B2 (en) | 1974-06-20 |
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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 |