Abstract:

We apply springdamper vibration isolation technology to a steel scrap crusher for the issue of its excessive vibration. Based on vibration isolation theory, we design a springdamper isolator with tuning ratio of 3.74 and damping ratio of 0.1. It reduces the maximum vibration velocity to control cabin and foundation from 4.83 mm/s to 1.82 mm/s. Twoyear practical operation demonstrates that the design can guarantee the health of workers and enhance the safety of a crusher and outbuildings. Vibration isolation efficiency increases by 30%, as compared with the original design. The vibration isolation design therefore has broad market prospect.

Key words: mechanical vibration, vibration isolation, natural frequency, resonance