| 摘要 |
A device for driving the winch of a crane car, in which, as means for arranging the speed reducer of said driving device in the winch drum (30), a structure is composed of: a first planetary gear train (1), (2), (6), and (5) including a first sun gear (1) connected to the output shaft (13) of the winch driving motor and a ring gear (6) fixed to the inner periphery of the winch drum (30); and a second planetary gear train (7), (8), (6), and (11) including a second sun gear (7) to which the first carrier (5) connected to the first planetary gear (2) of said first planetary gear train is connected, the ring gear (6) fixed to the winch drum (30), and a second carrier (11) connected to a second planetary gear (8) and to the clutch hub (12) so that the entire length of the winch driving device may be largely reduced. A similar purpose can be attained when a reducer is composed of one train of planetary gears (61), (62), (66), and (65). |
