METHOD FOR STARTING A GRINDING PIPE, CONTROL AND DRIVE DEVICES, AND PIPE CRUSHER.

摘要

The invention relates to a method for starting a grinding tube (2) with an assigned drive device (3), wherein during operation of the grinding tube (2) a grinding mode and a load release mode are provided. can be adjusted. Particularly reliable monitoring of the loading state (6) located on the grinding pipe (2) is ensured starting from an inactive state of the grinding pipe (2): - the grinding pipe (2) is rotated and, at a first rotational angle (a1), a first real torque (t1) is captured, - based on the first actual torque (t1) a nominal torque (t2nominal) is calculated for a larger second rotational angle (a2), - when the second rotational angle (a2) is reached a second effective actual torque (t2real) is captured, - Using a predefined threshold range (8) it is investigated how much the second actual torque (t2real) differs from the nominal torque (t2nominal), - and if the second actual torque (t2real) is within the threshold range (8) the grinding tube load release mode (2) is set - and, otherwise, Grinding tube (2) is operated in grinding mode.