Simulation and Experimental Research on Temperature Increase of Safety Gear Action of Explosive-Proof Lift

The kinetic energy of lift car will be consumed by the friction between the safety gear and guide rail in emergent braking process. This will lead to remarkable temperate increase of frictional surface. Due to the explosive atmospheres in which the explosive-proof lift servers, the high temperature may result in severe explosion accident. In this paper, an finite element model is developed to analysis this progress. The transient heat flux density is derived from energy transformation progress in safety gear action, and applied as boundary condition to the finite element model. Experiments are carried out to measure the temperature increase of safety gear frictional surface, and the results show good coincidence of temperature increase tendency between experiments and simulations.