DL multi-angle tire coupling unbalance phenomenon

DL type multi-angle tire coupling is actually due to a variety of reasons will make the coupling parts of the center of mass or inertia main shaft and its axis of addition do not coincide, in operation will produce unbalanced centrifugal inertia force, centrifugal inertia couple and dynamic deflection (mode) phenomenon, known as the rotor imbalance phenomenon, this imbalance phenomenon will inevitably cause shafting vibration. Thus affecting the normal work and service life of the machine, so it needs to be paid attention to.

In order to correct or greatly reduce the unbalance of Type DL polygonal tire couplings, the appropriate balance class shall be selected as necessary and achieved by adding or subtracting appropriate mass on the specified balance (correction) plane of type DL polygonal tire couplings after the product is manufactured and installed on the machine. This process is called balance correction, or balancing for short.

At present, the unbalance degree of DL multi-angle tire coupling is usually expressed by the product of the mass m of the rotor and the distance r from the center of mass to the rotary axis of the rotor, mr, so it is called mass diameter product. It is also expressed in terms of mass product per unit mass, called eccentricity e (not eccentricity in the geometric sense) Mass product mr Is a relative quantity related to rotor mass, while eccentricity e is a quantity independent of rotor mass. The former is more intuitive, often used for the balance operation of a specific given rotor, the latter is used to measure the pros and cons of the rotor balance or detect the balance accuracy, the balance grade standard of the tire coupling is evaluated by e.