Theoretical Research on the Crane Operation Impact Caused by the Rail Joint Error

Abstract

Aiming at the problem of the vertical impact dynamic effect caused by crane rail joint, the wheel - rail rigid body dynamics model is established, analyzes the influence degree of the crane operation impact caused by rail defects. According to the principle of maximum kinetic energy, the whole system is equivalent to a single degree of freedom system. On the basis of the response of the equivalent system to crane rail joint, the differential equation of the wheel - rail system is established, and the operation impact expression of the equivalent system is obtained. Which is compared and analyzed with the operation impact coefficient formula of the ISO8686-1:2012 "Cranes - Design principles for loads and load combinations - Part 1: General". Which provides a theoretical basis for the applicability of the operational impact coefficient formula of the ISO8686-1:2012"Cranes - Design principles for loads and load combinations - Part 1: General" and the GB/T3811-2008 "Design rules for cranes".