Abstract: In order to ensure the normal production of the grinding and separation system in the con⁃ centrator and reduce the maintenance cost and labor cost, in view of the high failure rate of spring and excit⁃ er, the cracking of beam and sieve plate and other typical faults encountered in the use of large double-lay⁃ er vibrating screen in the beneficiation process of Makeng Mining, the stress, damage mechanism and com⁃ mon fault caused by spring, exciter and sieve plate were studied. The research results show that the spring and exciter are overloaded. It is proposed to ensure the feeding balance through the chute transformation, improve the screening efficiency to reduce the excitation force appropriately, and improve the lubrication ef⁃ fect through the cooling transformation of the exciter while strengthening the point inspection management and other treatment measures, so that the use effect of the vibrating screen has been significantly improved.

Key words: vibrating screen, vibrating mass, screening efficiency, cooler modification