CLIAMS:1. A system (100) for bi-directional power take-off (PTO) in a tractor, the system (100) comprising:
a driver gear (120) mounted on a pump shaft (110), wherein the pump shaft (110) and the driven gear (120) are driven by a main drive shaft (102) coupled to an engine of the tractor;
an idler gear (402) mounted on an idler shaft (404), wherein the idler gear (402) is in constant mesh with the driver gear (120);
a cluster gear (128) mounted on a pinion shaft (132), wherein the cluster gear (128) is in constant mesh with the idler gear (402);
a driven gear (124) mounted on a PTO output shaft (116), wherein the driven gear (124) is in constant mesh with the cluster gear (128), and wherein the PTO output shaft (116) is adapted to be coupled to an implement;
a fixed sleeve (126) mounted on the PTO output shaft (116); and
a shift sleeve (122) coupled to the fixed sleeve (126), wherein the shift sleeve (122) is coupleable to the driver gear (120) and to the driven gear (124) through a shifting assembly (300) to provide a forward drive, a reverse drive, and a neutral drive to the PTO output shaft (116), and wherein the shifting assembly (300) comprises:
a rail (302);
a fork (308) mounted on the rail (302) and coupled with the shift sleeve (122); and
a selector arm (310) coupled to the rail (302), wherein the selector arm (310) is operable by an operator of the tractor to shift the shift sleeve (122) for the forward drive, the reverse drive, and the neutral drive of the PTO output shaft (116).
2. The system (100) as claimed in claim 1, wherein the rail (302) includes a forward groove, wherein, in the forward drive, the fork (308) engages with the forward groove to engage the shift sleeve (122) with the driver gear (120), and wherein the PTO output shaft (116) is driven by the pump shaft (110) directly through the driver gear (120), the shift sleeve (122), and the fixed sleeve (126).
3. The system (100) as claimed in claim 1, wherein the rail (302) includes a reverse groove, wherein, in the reverse drive, the fork (308) engages with the reverse groove to engage the shift sleeve (122) with the driven gear (124), and wherein the PTO output shaft (116) is driven by the pump shaft (110) through the driver gear (120), the idler gear (402), the cluster gear (128), the driven gear (124), the shift sleeve (122), and the fixed sleeve (126).
4. The system (100) as claimed in claim 1, wherein the rail (302) includes a neutral groove, wherein, in the neutral drive, the fork (308) engages with the neutral groove to place the shift sleeve (122) in a neutral position, wherein in the neutral position, the shift sleeve (122) is not engaged with the driven gear (124) and the driver gear (120).
5. The system (100) as claimed in claim 1 further comprising:
a bracket (406) coupled to the pinion shaft (132);
an idler support (408) coupled to a main drive housing (134); and
wherein the idler shaft (404) is supported by the bracket (406) and the idler support (408) for suspending the idler gear (402) in a cantilever configuration between the driver gear (120) and the cluster gear (128).
6. The system (100) as claimed in claim 1 further comprising a single selector lever (314), wherein a first end (316) of the single selector lever (314) is directly connected to the selector arm (310), and wherein a second end of the single selector lever (314) is disposed substantially close to the operator of the tractor for operating the selector arm (310).
7. The system (100) as claimed in claim 1, wherein the shifting assembly (300) is enclosed inside a main drive housing (134). ,TagSPECI:As Attached