Self-propelling construction machine

A method for controlling a self-propelling construction machine, wherein the construction machine includes:

• a chassis including crawler track units;
• a working unit including at least one milling drum configured to mill a ground surface as the construction machine is advanced by the crawler track units;
• a drive unit including at least one internal combustion engine;
• a first power transmission line for transmitting a first drive power of the drive unit to the crawler track units, wherein the first power transmission line is configured such that the first drive power to be transmitted can be controlled;
• a second power transmission line for transmitting a second drive power of the drive unit to the milling drum, the second power transmission line including a gear mechanism system including a hydrodynamic gear mechanism with a drive shaft and an output shaft ;
• the method comprising:
• controlling the first drive power to be transmitted by the first power transmission line so as to control an advance speed of the crawler track units and thereby advance speed at which the milling drum is advanced into the ground surface such that a rotational speed difference between the drive shaft and the output shaft of the hydrodynamic gear mechanism corresponds to a predefined value.

A self-propelling construction machine, comprising:

• a chassis including crawler track units;
• a milling drum configured to mill a ground surface as the construction machine is advanced by the crawler track units;
• at least one internal combustion engine;
• a first power transmission line for transmitting power from the internal combustion engine to the crawler track units, the first power transmission line including an adjustment device configured to adjust the power transmitted to the crawler track units;
• a second power transmission line for transmitting power from the internal combustion engine to the milling drum, the second power transmission line including a hydrodynamic gear mechanism including a drive shaft and an output shaft;
• a sensor system configured to detect an input rotational speed of the drive shaft and an output rotational speed of the output shaft;
• and
• a controller configured to control the adjustment device to adjust the power transmitted to the crawler track units so as to control an advance speed of the crawler track units and thereby control an advance seed at which the milling drum is advanced into the ground surface such that a rotational speed difference between the input rotational speed and the output rotational speed corresponds to a predefined value.