Shock Response Properties of Crane Slewing Bearing Under the Shock Response Properties of Crane Slewing Bearing Under the Condition of Revolve Braking Condition of Revolve Braking

In order to figure out the origin of the gear failure of crane slewing bearing, taking the outer race gear as research object, an impact dynamics calculation model of the gear under the condition of revolve braking was established, the shock response properties of the gear in different rotary speed were analyzed , and its general rule was discussed by using the explicit dynamics FEA analysis method. The result shows that the impulsive force is the main reason of gear surface pitting and brokenness; the shock responses are more serious while the rotary speed is increasing.