Abstract:

In view of the coal mine underground explosion-proof diesel engine in use in the process of crankshaft fracture phenomenon, the use of dynamic simulation software AVL Excite established the explosion-proof diesel engine crankshaft system multi-body dynamics simulation model ,and several working cycle of crankshaft dynamic stress analysis, The results show that the maximum of the sixth crank stress values of explosion-proof diesel engine close to the limit, operation in overload conditions is easier to be broken, and the results of conformity, the theoretical basis is provided in order to solve the fracture and optimize the crankshaft.

Key words: flameproof diesel engine, multi-body dynamics, crankshaft, dynamic stress