Slewing ring flange is a new type of mechanical part. It is composed of inner and outer rings and rolling elements. Slewing ring flange is a kind of large bearing which can bear comprehensive load. It can bear large axial and radial loads and overturning moments during operation. Swing bearing is widely used in practical industry. They are called "machine joints". They are important transmission components in the mechanical field, which need the relative rotation between the two flanges. Bear axial force, radial force and overturning moment. With the rapid development of machinery industry, slewing ring has been widely used in shipbuilding equipment, engineering machinery, light industry machinery, metallurgical machinery, medical machinery, industrial machinery and other industries.
Slewing ring is usually composed of worm, slewing ring flange, bearing seat, motor and other components. As the core component adopts slewing ring flange, it can bear axial force, radial force and overturning moment at the same time. There are many forms, but the structure and composition are basically the same.
If the rolling surface of the slewing ring is cracked, dented or corroded. It will produce periodic vibration and noise like rivets. The period may be fixed, but most of them have a certain corresponding relationship with the speed. In this case, traces will occasionally be left on the steel ball, and the noise will change with the flange installation and lubrication conditions.
This noise is not just caused by the bearings. It is invalid to find the cause only from the bearing. Pay full attention to the host and improve its performance if necessary. Now it mainly describes the common buzzing sound and frame resonance in the motor. The buzzing sound of the motor and its countermeasures the vibration of the motor shaft the slewing ring flange will produce a lot of high-frequency noise, and its frequency is the same as that of the axial vibration. Can be constant. It can also be variable. The same way to prevent buzzing is to prevent axial vibration.
Rotating sound and its countermeasures when the axial natural vibration of the outer ring mass system causes the axial bending natural vibration of the slewing ring flange. It produces a noise called resonance sound. Increasing the preload can improve the axial natural frequency of the outer ring mass system, destroy the resonance condition and reduce the noise.
