Gearbox unit for a farm vehicle with a wide range of speeds
First Claim
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1. A gearbox unit for a farming motor vehicle comprising:
- a system of staged planetary gears in order to provide a plurality of first transmission ratios;
a clutch device comprising an input shaft clutch coupled to said system of staged planetary gears and an output shaft clutch;
a large high speed clutch wheel rotatably mounted on said output shaft, and a small low speed clutch wheel rotatably mounted on said output shaft clutch in order to provide two second transmission ratios;
a clutch coupling device in order to be able to couple one or the other of said low and high speed wheels with said output shaft clutch;
an output shaft comprising a small high speed output wheel meshing with said large high speed clutch wheel and a large low speed output wheel meshing with said small low speed clutch wheel; and
further comprising a decoupling device between said output shaft and said large low speed output wheel in order to be able to release said output shaft from said small low speed clutch wheel.
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Abstract
A gearbox assembly that includes a system of stacked planetary gearsets; a clutch device including an input clutch shaft and an output clutch shaft; a large clutch wheel and a small clutch wheel mounted idle on the output clutch shaft; a clutch coupling device for coupling the small and large wheels with the output clutch shaft; an output shaft including a small output wheel meshing with the large clutch wheel and a large output wheel meshing with the small clutch wheel.
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Citations
10 Claims
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1. A gearbox unit for a farming motor vehicle comprising:
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a system of staged planetary gears in order to provide a plurality of first transmission ratios; a clutch device comprising an input shaft clutch coupled to said system of staged planetary gears and an output shaft clutch; a large high speed clutch wheel rotatably mounted on said output shaft, and a small low speed clutch wheel rotatably mounted on said output shaft clutch in order to provide two second transmission ratios; a clutch coupling device in order to be able to couple one or the other of said low and high speed wheels with said output shaft clutch; an output shaft comprising a small high speed output wheel meshing with said large high speed clutch wheel and a large low speed output wheel meshing with said small low speed clutch wheel; and further comprising a decoupling device between said output shaft and said large low speed output wheel in order to be able to release said output shaft from said small low speed clutch wheel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification