Highly flexible couplings – Technical information
A driveline will normally consist of:
- a driving machine (prime mover)
- coupling elements (couplings, gears etc.)
- a driven machine (power consumer)
The individual components of a driveline are made of elastic materials (e.g. steel) and have a mass. Accordingly they represent a system susceptible to torsional vibration. If this system is incited, it will start vibrating with a determined frequency: its natural frequency and amplitude.
If a damping is introduced, the vibration amplitude will assume a finite value. A reciprocating diesel engine does not convey its capacity evenly over one rotation of the crankshaft. Nonetheless, a diesel engine strains the driveline considerably, especially since the new injection technologies have been introduced and there is the trend towards ever lighter inertia weights.
A useful operational strength and unit lifetime is often achieved only after a highly flexible coupling has been installed in the driveline.
Customer benefits of the highly flexible coupling
Customer benefit by using a Voith highly flexible coupling in the driveline:
- increased availability of all components in the driveline
due to damping of torsional vibrations and load peaks in the driveline
- decreased life cycle costs
due to increases lifetime of all driveline components
- increased comfort
due to less vibration and noise
Dimensioning of highly flexible couplings
Dimensioning a highly flexible coupling is an iterative process due to the complexity of the material stressing: