How to Prevent Vibration Motor from Burning Down?
For vibration motors, burning down is a common fault. So why does the vibration motor burn down? How to prevent it? This article will introduce the specific reasons and preventive measures for this, from the 6 points of anchor bolts loosening, installation, eccentric block adjustment, sealing of the protective cover, ambient temperature and heat dissipation.
- Anchor Bolts Loosening
The loose anchor bolt is one of the main reasons that cause the vibration motor to burn out. Due to the particularity of the body structure of the vibrating motor, the excitation force generated by the eccentric blocks at both ends of the motor impacts the anchor bolts 2,000 times per minute. On the other hand, due to the vibration of the vibration motor itself, the anchor bolts will get loose easily. If one of the bolts is loose, it will cause the other bolts to loosen or even break in a short time, causing the vibration motor to be burned out.
- Reinforce the anchor bolts regularly.
- Add an anti-loose device to vibration motor.
- The anchor bolts must be evenly stressed and a good contact surface between the anchor surface and vibration motor bottom plate must be ensured.
In model selection, try to choose the vibration motor with integrated housing and the base (that is, the foot surface is on the housing). Because the foot surface is processed at one time, the level can be guaranteed in this way. However, as to the vibration motor with no integrated housing and base (that is, the foot surface is on the end caps at both ends), the foot surface is processed in stages and then assembled, there will be certain errors in the assembly process. In this way, the level of the foot surface cannot be guaranteed, and the force of the foot bolts is uneven, and the bolts with larger forces are easy to loosen, causing the loosening and breaking of other bolts, and finally causing the motor to burn out.
There are heavier eccentric blocks at both ends of the vibration motor. If vertical or inclined installation is used (that is, the shaft is vertical or inclined to the horizontal plane), the bearing axis must bear the gravity of the eccentric block. If there is no special device (ie, plane bearing) in the vibration motor, it will have an adverse effect on the bearing and ultimately shorten the service life.
- Choose the vertical vibration motor (add a plane bearing inside).
- Try to avoid vertical or inclined installation for vibration motor.
- Adjustment of the Eccentric Block
When adjusting the eccentric block, if the direction of the eccentric block at both ends is reversed by mistake, the vibration motor will generate a spatial torque, which will cause the vibration motor to work in an abnormal state and cause burnout. Therefore, when adjusting the eccentric block, we must pay attention to its symmetry. That is, the eccentric blocks at both ends should correspond to each other in pairs, or the connecting line of the center of gravity of the eccentric blocks at both ends should be parallel to the axis of rotation and cannot be in different planes.
- Seal of the Protective Cover
Vibration motors generally work in a very harsh environment with relatively large dust. If the protective cover is not tightly sealed, it is easy to cause dust to enter, causing the frictional operation of the eccentric block, thereby burning the motor. Therefore, in a place with a harsh working environment, the first is to increase the seal of the protective cover, and the second is to frequently clean the dust inside the protective cover.
- Ambient Temperature
The temperature of the material conveyed by the equipment cannot be too high. Because the vibration motor and the equipment are rigidly connected, it can also be said to be a whole. If the temperature of the material conveyed by the equipment is too high, it is easy to cause the temperature of the ground and the casing of the vibrating motor to increase, causing difficulty in heat dissipation, and burning the motor.
- Under the premise of not affecting the equipment operation, the vibration motor shall be kept away from the high-temperature material as much as possible.
- It is required to lower down the material temperature.
- Heat Dissipation
Ordinary motors are equipped with fans. When working, the fans will make the wind flow along the vertical ribs on the casing. This not only dissipates heat faster, but also removes the dust on it, making the motor work in good condition.
However, because the vibration motor has no fan to dissipate heat, it depends on natural cooling completely. In addition, the working environment is usually very harsh with plenty of dust, and the dust is easy to accumulate on the surface of the motor, which causes the internal temperature to be too high, and eventually burns the motor.
- The dust on the surface of the motor can be often removed, so that the motor can work in good conditions.
- In the design process, the surface of the vibrating motor should be designed as smooth as possible to prevent dust from accumulating. If the motor is working in a dusty environment, subtracting the heat dissipation ribs on the surface of the case shall be considered. Because, at this time, the heat dissipation ribs not only fail to dissipate heat, but also easily accumulate dust and hinder the heat dissipation of the motor.