Construction machine, as well as clutch for switching the power flow

A construction machine (1), with a working drum (6) mounted at a machine frame (4), a combustion engine (10) for driving the working drum (6), a drive train (8) between the combustion engine (10) and the working drum (6), and a clutch (14) in the drive train (8), where the clutch (14) is arranged between a drive shaft (21) and an output shaft (22) of the drive train (8), clutch elements (34, 36).on the drive side that are capable of being engaged with clutch elements (41, 42, 43) on the output side, where the clutch elements (34, 36, 41, 42, 43) on the drive side or on the output side are provided with several clutch part elements (34, 36) that are permanently engaged with one another via at least one mechanical coupling, characterized in that a braking device (19) acting between the drive shaft and the output shaft (21, 22) is arranged at the clutch (14), the said braking device (19) being additionally engaged during engagement of the clutch in order to eliminate or to reduce any rotary vibrations caused by play of the mechanical coupling between the clutch part elements (34, 36).