| 摘要 |
The invention relates to a method and apparatus for a pressing process, such as for use of a waste compactor or the like, wherein a pressing force needed in the pressing process is being produced by action of an electric press motor (1 ), by using a mechanical drive assembly or preferably a hydraulic pump arrangement (2), being coupled to a pressure medium system, whereby the hydraulic fluid, is being directed through a valve arrangement (3), into an actuator cylinder arrangement (4), in order to move a pressing piston (5) or the like. The pressing process is being carried out in a controlled manner by a programmable logic (6) and monitoring means (7) coupled therewith. In the method frequency inverter principle is being exploited particularly in order to enable use of the press motor (1 ) in a steplessly adjustable manner and depending on the situation/circumstances with a speed both lower and higher than its nominal speed. |
