Faults causing noise in belt conveyors and their solutions

Thread Content

This post was last edited by ztj1118 on 2015-11-20 at 11:52. The normal operating sound should be even and steady; if unusual noises occur occasionally, then be aware that a malfunction may have occurred. In such cases, it is necessary to identify the source of the noise and repair the equipment. Next, the editor from Shanghai Yuyin will discuss the problems caused by noise in belt conveyors and the corresponding solutions: 1. Different couplings can cause noise. When noise occurs between the motor and the belt brake shaft coupling, the frequency of the rotating noise is the same as the frequency at which the motor rotates. This shows that there is no difference in frequency between the two; when noise is generated, we should adjust the relative position of the reducer to prevent it from breaking. 2. The occurrence of noise is related to the eccentricity of the idlers. During operation, these idlers can generate unusual noises, and the belt conveyor will also vibrate. As for the return idler, it has a length as well as a mass, and its noise level is much higher than before. There are mainly two reasons for this: first, it is a steel pipe without any gaps, which generates a relatively strong centrifugal force. Second, during the machining of its bearings, the center hole was slightly offset outward, which indicates that excessive centrifugal force was at play. If there is a problem with the bearing and noise persists, we can still continue to use it. 3. Comprehensively reduce the noise generated by the rollers and the drive rollers. The noise level is very low when the noise from the rollers is reduced, and it remains low as well when the direction of roller rotation is changed. Unexplained noises occur due to damaged bearings, and these bearings should be replaced at this time. At the upper part of the shaft, fatigue damage occurs easily due to the transition fillet. If the radius is too small over a relatively short period of time, it can cause the shaft of the reducer to break, which is not beneficial for the thrust shaft. In such cases, we must replace the modifier promptly. Also, the high-speed shaft is a bit different. This vehicle will reduce the increase in the radial load on the input shaft as well as the deviation of the high-speed shaft in the gearbox; this, in turn, increases the bending of the shafts. It is normal for the shafts to break after operating for a long time. We must carefully maintain and adjust the two communication points, to ensure that under normal conditions the motor shaft does not break. This is largely related to the material used; if the stress concentration on the diameter of the motor shaft is low, then the shaft will not break either.