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Dongyuan Homepage > Encyclopedia of warehouse wall vibrator > Encyclopedia of shaker >Analysis on the tuning link of automatic feeding machine

Analysis on the tuning link of automatic feeding machine

Automatic feeding machine The adjustment of elastic system is a very important part in production. The so-called elastic system adjustment, automatic feeding machine is to adjust the excitation frequency. The ratio Z of the natural frequency W0 of the automatic feeder determines whether the device can work normally and stably. In order to obtain higher mechanical properties with lower power consumption, the tuning value Z needs to reach the critical resonance state. Considering the mass of the material in the tank during the feeder operation, the value of Z is usually U. 8 ~ 0.   95。
 
In the process of adjusting the elastic system of the automatic feeder, since the excitation frequency w cannot be changed according to the frequency of 50 Hz power grid, only the natural frequency W0 of the whole automatic feeder system can be changed. In order to change the natural frequency, the formula w = sqrt (K / M) knows that the automatic feeder is changing the stiffness and transfer mass of the elastic system.
The common force method is to change the number of leaf springs or to add weight to the system to achieve the purpose of adjustment. The balance weight of the system and the need to change the number of leaf springs need enough patience. With the change of ore variety and quality, it needs to be readjusted, which undoubtedly greatly increases the difficulty of the work. Therefore, the tuning link of automatic feeding machine has always been the bottleneck of its production.
 
The excitation frequency w of the original electromagnetic feeder is 50 Hz, z = w / W0 = 0.   85〜0。 Its natural frequency W0 is about 60Hz. It comes from the natural frequency measuring instrument. It can also be measured. The frequency of the automatic feeder is adjusted to this range, and the voltage and current are output to the electromagnetic actuator to achieve the required critical resonance state.
 
In the actual working environment, due to the different types of ore transported by the automatic feeder, the natural frequency will change. In order to quickly adjust the force, the vibration composed of PLC, frequency converter and sensor is designed. Tuning system.
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