Manufacturers who make automatic doors know that the most common failures of automatic doors are nothing more than noise, vibration, burning motor, and damaged gears due to blockage. In order to reduce these failures in automatic doors and extend the life of the motor, it is important to conduct a detailed study of the duty cycle, torque and speed required for its correct operation.
Additionally, the use of control electronics with ramp-up and ramp-down times reduces stress on the mechanism by limiting the voltage/power at the beginning and end of motion. During start-up, more torque is required because the start-up state is static. Another commonly used solution to keep the system running is the over-current cut-out relay, which is triggered when the system detects a peak in consumption within a certain period of time. By disconnecting the power, it prevents the motor from being burned in case of failure. Focus! It's also important to use brushless motors in heavy-duty doors because, as the name suggests, they don't use brushes and therefore last longer.
How to prevent the noise of the automatic door? Artificial installations using such doors present significant problems related to noise and vibration in the surrounding environment. The reason is directly related to the type of motor used, the material of the kinematic chain and the handling of vibrations transmitted from the mechanism to the housing.
To prevent these failures, using brushless motors indoors is essential to reduce vibration. Furthermore, we must not forget that these motors have a longer service life, which is an added value when considering installations.
Additionally, the use of plastic gears in the kinematic chain also prevents sliding in meshing metal, which can create excessive noise and vibration. It must be remembered that the plastic absorbs vibrations caused by the operating speed of the system. Another good option is to use a helical geared motor, which will have less vibration and slack due to the overlap ratio of the upper teeth. Also, using metal chains in the transmission creates more vibration, and their tightness increases vibration during operation.
Finally, it must be borne in mind that the anchor base needs to be reinforced by the use of bushings fitted between the anchor base and the reducer. These elastomeric polymer seals absorb vibrations that may occur at the contact points between various mechanical components.
