Definition: A coupling is a mechanical device used to connect a drive shaft (active shaft) and a driven shaft so that the two shafts rotate together to transmit motion and torque (rotational power).
Core functions:
Transmitting torque: The most fundamental function is to transmit power from the active shaft to the driven shaft.
Compensating for inter-axis deviation:
Radial displacement: The axes of the two shafts are parallel but not coincident.
Axial displacement: The relative movement of the two shafts along the axis direction.
Angular displacement: The axes of the two shafts intersect at a certain angle.
Comprehensive displacement: The above displacements exist at the same time.
Absorbing vibration and shock: Buffering the impact load generated during start-up, stop or sudden load change, reducing the vibration transmitted to the shaft system and bearings, and protecting the equipment.
Overload protection: Some types of couplings (such as safety couplings) disconnect or slip when overloaded to protect key equipment in the transmission chain.
Improving the dynamic performance of the transmission system: Changing the torsional stiffness and damping characteristics of the system to avoid resonance.
Convenient maintenance: Allows the drive connection to be disconnected for maintenance without moving the main body of the equipment.