Analysis of the causes of circular vibrating screen shaft fracture

The circular vibrating screen mainly generates vibration by driving a vibrator with eccentric mass through an electric motor. During the vibration process, the shaft is the key component that drives the circular vibrating screen to vibrate, and is also subject to a large force. Therefore, in actual use, shaft fracture is a relatively common fault. Once the shaft fracture problem occurs, the circular vibrating screen will stop working immediately, and its maintenance is relatively complicated.
 

1. Long-term metal fatigue or poor shaft material

The shaft of the circular vibrating screen is a metal material. During use, it will be subjected to the combined torque of torque and repeated impact force for a long time. Under the action of long-term impact torque, the internal material of the shaft will gradually fatigue, and when the fatigue limit is reached, fracture will occur. In addition, there are large differences in the torsional strength of different materials. If the material is poor, it will inevitably lead to low bending strength and fatigue resistance, and it is easy to be damaged.

It is recommended that when purchasing a circular vibrating screen, you must choose a regular manufacturer to ensure that the material selection of each component is reasonable. At the same time, it is strictly forbidden to start the circular vibrating screen with material, and ensure that the circular vibrating screen is only started without material; strengthen daily maintenance and inspection, and regularly check the shaft. Once bending, deformation and other phenomena are found, they must be replaced in time to avoid damage during the transmission process.

2. Excessive tension of the V-belt

If the tension of the V-belt of the circular vibrating screen is too large, it will cause additional bending moment of the shaft, increase the synthetic moment, and significantly increase the stress during the working process with material, even exceeding the allowable stress of the shaft, directly causing damage to the shaft. Therefore, it is necessary to adjust the tension of the V-belt in time. It is recommended to reduce the tension of the V-belt as much as possible while ensuring normal transmission. Of course, changing to a flexible connection can avoid this phenomenon.