Vibration Diagnosis of Sand Units in Stone Crusher Plant On-site Field Test
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References
Nearshore dynamics of artificial sand and oil agglomerates.
Design and Evaluation of an Expert System in a Crushing Plant
Trispectrum and correlation dimension analysis of magnetorheological damper in vibration screen
Beating frequency and amplitude modulation of the piano tone due to coupling of tones.
Robust Damage Diagnostic Method Using Short Time Fourier Transform and Beating
Related Papers (5)
Frequently Asked Questions (14)
Q2. What is the role of the rock breaking and crushing process?
The rock (or stone) breaking and crushing process plays an important role in minimizing the particle size of stone or rock for various construction activities, such as building bridges or infrastructure.
Q3. What is the vibration transmission principle of the screen and sand production plant?
The vibration that occurred during the operation of the screen unit and sand units is transmitted the power to the shaft through the belt pulley directly related to the excitation force generated by actuating motors.
Q4. What is the vibration isolation for the artificial sand production plant?
The vibration isolation for the artificial sand production plant is mainly achieved by utilizing rubber mounts and/or coil springs.
Q5. What is the main reason for the lack of sand in the natural environment?
indiscriminate collection of sand from rivers causes flooding and destruction of the natural environment such as river ecosystems, leading to various social issues.
Q6. How many dB are calculated for the sand unit?
More specifically, for the sand unit, VAL, ∆VAL, transmissibility and percent isolation are calculated by 116 dB, 31 dB, 0.028, and 97.2%, respectively.
Q7. What is the fundamental frequency of the sand and screen unit actuators?
In this work, the beating phenomenon can occur by resonance when the fundamental frequencies corresponding to the driving frequencies of sand and screen unit actuators are close.
Q8. What is the definition of passive isolators?
The example of passive isolators in a mechanical system includes metal coil spring, cork, felt, pneumatic springs and viscoelastic material, such as elastomer or rubber springs.
Q9. How many dB is the VAL at the upper point of the coil spring?
The vibration acceleration level (VAL) at the upper point of the coil spring is calculated by 150 dB, and the VAL at the bottom point of the coil spring is by 140 dB, respectively.
Q10. What is the minimum value of the vibration isolation efficiency?
The vibration isolation design has three criteria or requirements as follows [32–38]: (i) the frequency ratio should be more than three (f /fn = r ≥ 3), (ii) the vibration transmissibility (or percentage isolation) should be below 0.1 (%I ≥ 90%, where, %I represents the vibration isolation rate percentage) (iii) the minimum value of the vibration isolation efficiency should be under 12.5%.
Q11. What is the main technical contribution of this work?
Appl. Sci. 2020, 10, 4327 3 of 17Consequently, the main technical contribution of this work is to experimentally investigate the vibration characteristics of the artificial sand production plant through on-site measurement.
Q12. How many dB is the VAL at the top point of the coil spring?
Based on Equation (4), the calculated VAL at the top point of the coil spring is 147 dB, and the calculated VAL at the bottom point of the coil spring is 116 dB, respectively.
Q13. What is the reason why the vibration is so high?
the occurrence of the beating behavior is seriously considered as one of the main reasons which can cause high vibration levels.
Q14. How many isolations of the sand and screen units are evaluated?
Appl. Sci. 2020, 10, 4327 4 of 17Appl. Sci. 2020, 10, x FOR PEER REVIEW 3 of 17 isolations of the sand and screen units are evaluated, and vibration sources are identified.