The function, type, characteristic and choice of coupling
(1) the function of the coupling
A coupling is connected to the axial axis ability and transfer torque and motion components and compensate the offset with certain, in order to reduce vibration, reduce the impact of the mechanical transmission system peak load, the coupling should also have certain cushioning performance. Coupling sometimes also has overload safety protection function.
(2) types and characteristics of couplings;
Rigid couplings: rigid couplings do not have compensation to be coupled to two shafts...
The function, type, characteristic and choice of coupling
(1) the function of the coupling
A coupling is connected to the axial axis ability and transfer torque and motion components and compensate the offset with certain, in order to reduce vibration, reduce the impact of the mechanical transmission system peak load, the coupling should also have certain cushioning performance. Coupling sometimes also has overload safety protection function.
(2) types and characteristics of couplings;
Rigid couplings: rigid couplings do not have the ability to compensate for the relative offset of the axis of the two shafts, nor do they have cushioning performance, but they are simple in structure and cheap in price. The rigid couplings can be used only when the load is steady and the speed is stable and the relative axis of the two shafts is relatively small.
Flexible coupling: it has the ability to compensate for the relative offset of the axis of the two shafts, and the maximum amount varies with the model.
* flexible components of flexible components, bearing capacity, but also does not have cushioning performance, at high speed or unstable speed, or often positive and reverse, there is impact noise. It is suitable for low speed, heavy load and steady speed.
* flexible coupling non-metallic elastic element has good shock absorption performance in speed instability; but due to the non metal (rubber, nylon) strength elastic element is low, short service life, bearing capacity of small, high temperature and low temperature, so it is suitable for high speed and light load and normal occasions
* flexible couplings of metal elastic components have better bearing capacity besides good cushioning and shock absorption performance. They are suitable for occasions with large change in speed and load, as well as high temperature or low temperature.
Safety coupling: the structural feature is that there is an insurance link (such as pins, movable connections, etc.), which can only be subjected to a limited load. When the actual load exceeds the predetermined load, the insurance changes, cutting off the movement and transmission of power, thereby protecting the rest of the machine from damage, which is a safety role.
Starting safety coupling: in addition to overload protection, as well as the machine, motor starting with the load into an approximate no-load start role.
