| 摘要 |
A tractor power take-off drive line having an output shaft (11) with a socket (12) within which a removeable PTO stub shaft (13) is drivingly received. The stub shaft is retained in the socket by radially moveable retaining members (16) housed in the output shaft and moveable between a radially inward retaining position in which the retaining members each projecting into the socket (12) to engage a retaining formation (18) in the stub shaft (13) within the socket and a radially outward releasing position in which the retaining members are free to move radially outwardly relative to the socket to disengage the retaining formation and allow the stub-shaft to be removed from the socket. The retaining members (16) are moved between their retaining and releasing positions by an actuating sleeve (19, 29) which is axially slidable on the output shaft (11) by a tractor operator between a first retaining position in which a first stub shaft designed to be driven at a first output speed is retained in position in the socket, a second retaining position in which a second stub shaft designed to be driven at a second output speed is retained in position in the socket, and a third releasing position in which the retaining members are allowed to move to their releasing positions. The sleeve (19, 29) carries first and second PTO shaft speed indicating formations which are respectively designed to be aligned with a speed sensor (32) when the sleeve is in its first and second stub shaft retaining positions respectively. |
