Modernization of the GISL screen exciter in conversion to new operating mode

Abstract

Research aim. The article considers the kinematic and dynamic parameters of the screen GISL-62 in order to improve the device for exciting mechanical vibration and the effective use of the screen because of the ISSN 0536-1028 «Известия вузов. Горный журнал», № 2, 2020 107 need to transfer it to the operation mode with increased frequency of vibrator shafts rotation and reduced amplitude of the box vibration. Research methodology. Methods of analytical research with the elements of dynamic and kinematic synthesis are used to specify the adjustment of the screen with the necessary kinematic parameters. Results. The studies of the differential equation of the steady-state screen motion are carried out to obtain the required amplitude of the screen box oscillations and the vibrator shaft rotation frequency. The necessary disturbing force created by the vibrator, the value of static moment of unbalance, the required number of vibration dampers in the screen box supports, the calculated power of motors and other parameters of the vibrator operation mode are determined. The strength and rigidity of the vibrator shafts is calculated considering the significant exciting forces created by the unbalance. The coefficient of the screen dynamics is calculated. Conclusions. The questions connected with defining parameters of the screen, necessary to transfer to a new operation mode are comprehensively settled.