Patent ID: 11926974
Assignee: WIRTGEN GMBH
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 10:
11. A method of starting up a removal tool of an interchangeable unit of a road construction machine:
wherein the interchangeable unit includes:
a housing;
a removal tool mounted on the housing;
a drive belt pulley rotatably mounted on the housing;
a transmission gear unit configured to transmit torque and rotary motion from the drive belt pulley to the removal tool;
a start-up motor; and
a start-up clutch configured to connect the start-up motor and the removal tool in a torque-transmitting fashion such that the start-up motor is disengageable from the removal tool;

wherein the road construction machine includes:
a machine frame, the housing being mounted to the machine frame;
at least three drive units configured to rollably stand on a ground surface;
a motor;
an output belt pulley drivable by the motor; and
a drive belt connecting the output belt pulley to the drive belt pulley;

the method comprising:
switching the start-up clutch into a, or holding the start-up clutch in a, torque-transmitting connection state if the removal tool rotates at a speed that is lower than or equal to a first limit speed, the first limit speed being lower than a removal speed of the removal tool during normal removal operation of the removal tool.