Farm vehicle power take-off
AssigneeCNH America LLC
InventorsGiancarlo Benassi, Ivan Tioli
Life of this patent
Estimating the term…
Abstract
A farm vehicle power take-off device, in particular for a tractor, wherein an output shaft is connected selectively by a drive to a first and second input shaft rotating at different speeds. The selective connection is made by moving a selector sleeve between three settings, in a first and second of which, the output shaft is connected to the first shaft to rotate at a first and second angular speed respectively, and, in a third of which, the output shaft is connected to the second shaft to rotate at a third angular speed different from the first and second angular speed.
Claims12
A power take-off device for a tractor, the device comprising:
- an output shaft including a power take-off shaft;
- a drive interposed between the output shaft and a first input shaft and a second input shaft rotating at different angular speeds;
- the drive comprising a selector for connecting the output shaft selectively to the first input shaft and the second input shaft, such that the output shaft when connected to the first input shaft rotates at a first angular speed or a second angular speed, and, when the output shaft is connected to the second input shaft, rotates at a third angular speed which is different from the first angular speed and the second angular speed;
- and
- wherein the selector is configured to move between at least three speed settings and two neutral positions, corresponding from left to right, to the first angular speed of a first speed setting, a first neutral position, the second angular speed of a second speed setting, a second neutral position, and the third angular speed of a third speed setting of the output shaft, respectively,
- wherein the drive comprises a hollow shaft and an inner shaft rotating freely inside the hollow shaft, wherein the hollow shaft and inner shaft are coaxial with each other and with the first input shaft, and
- wherein the hollow shaft has external teeth at one end facing the first input shaft, and the hollow shaft is fitted at the opposite end with a first gear meshing with a second gear fitted to the output shaft.
A power take-off device for a tractor, the device comprising:
- an output shaft including a power take-off shaft;
- a drive interposed between the output shaft and a first input shaft and a second input shaft rotating at different angular speeds;
- the drive comprising a selector for connecting the output shaft selectively to the first input shaft and the second input shaft, such that the output shaft when connected to the first input shaft rotates at a first angular speed or a second angular speed, and, when the output shaft is connected to the second input shaft, rotates at a third angular speed which is different from the first angular speed and the second angular speed;
- and
- wherein the selector includes a sleeve, and the selector is configured to move between at least three speed settings corresponding to the first angular speed of a first speed setting, the second angular speed of a second speed setting, and the third angular speed of a third speed setting of the output shaft, respectively, and
- wherein when the selector is positioned in a first speed setting, the output shaft is operably connected to the second input shaft, when the selector is positioned in a second speed setting, the output shaft is operably connected to the first input shaft, and when the selector is positioned in the third position, the output shaft is operably connected to the first input shaft.
Dependencies are inferred from the claim text.