| 摘要 |
1. A coupling device (1) for a power-shift transmission, consisting of two multiple-disk couplings (2, 3), which are operable by pressure fluid and have disks supplied with a cooling fluid, wherein one (3) of said multiple-disk couplings opens against the force of a coupling spring (6) in response to a supply of pressure fluid, and the other (2) of said couplings closes against the force of a disengaging spring in response to a supply of pressure fluid, the multiple-disk couplings are mounted on a common drive shaft (9) and supply bores (10, 11) and a control device (12) associated with said supply bores are provided in the drive shaft (9) for a supply of pressure fluid and a cooling fluid through pressure fluid and cooling fluid supply bores (13, 14), characterized in that the drive shaft (9) comprises as a control device (12) provided adjacent to the supply lines (13, 14) for pressure fluid and cooling fluid a cylinder chamber (16a), which is adapted to be supplied with pressure fluid at one end (cylinder chamber [16]) and with cooling fluid at the other end and serves to receive a control piston (15), which is reciprocable between limiting stops, and via control passages (19) or the like of the control piston (15) the cooling fluid supply line (14) or the cylinder chamber (16a) which is supplied with cooling fluid is connected by said control piston to the supply bore (10) for that multiple-disk coupling (2) which is operable by pressure fluid in a closing sense when said control piston is in its end position on the cooling fluid side and is connected by said control piston to the supply bore (11) for that multiple-disk coupling (3) which is operable by pressure fluid in an opening sense when said control piston is in its end position on the pressure fluid side. |
