Gearbox for an agricultural tractor

Details Gearbox for an agricultural tractor Gearbox for an agricultural tractor

F - Mech Eng,Light,Heat,Weapons

16

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74/117

F16H 37/04 (2006.01) F16H 3/08 (2006.01) F16H 3/54 (2006.01)

Patent

CA 1110876

ABSTRACT OF THE DISCLOSURE A speed change gearbox for agricultural tractors and similar vehicles has an elongate casing rotatably mounting input and output shafts which are coupled by gearing compris- ing reduction means selectively operable to provided one of a plurality of reduction ratios, and a final gearing stage which serves to set a particular range of ratios. The reduction means includes an epicyclic gear mechanism provided with associated hydraulic control means for selectively controlling movement gears operatively selectable by further of continuously meshing gears operatively selectable by further hydraulic control means. The arrangement of the hydraulic control means is such that they are all centred on the input shaft which enables the transverse bilk of the gearbox to be minimised.

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