Dynamic Simulation And Structure Strength Finite Element Analysis Of Heavy Apron Feeder

Heavy apron feeder is one of the key equipment to guarantee mechanization and automation of material transportation and loading in the process of mining, its performance will directly affect the mining safety production and economic benefits. Combining the domestic large mine feeding machine research and development projects, motor power under different working conditions and structural strength of key parts were analyzed. First of all, according to the principle of chain transmission and force, the calculation method of total resistance was given, on the basis of this, the power of driving chain wheel under full load and no load conditions was given. Then, using high-speed track module of multibody dynamics software RecurDyn to establish the virtual prototype model of heavy apron feeder, motor power was analyzed in the light and full loading in the three stages of start, stable operation and brake, and compared with theoretical calculation results, the correctness of theoretical calculation was verified further. Then, the coupled model of drive shaft was established, the author analyzed the drive shaft on dynamic strength under different working conditions which was based on the driving power of loading conditions that was given and extracted the real-time changes of the node stress of dangerous position, on the basis of this, the evaluation of the reliability of the drive shaft was given. Finally, finite element model of key parts like the bracket, the drive shaft and chain plate were set up, the author analyzed the strength and rigidity of key parts in dangerous working conditions, in addition, supported by the modal analysis, The weak parts of the bracket was obtained to provide guidance to improve the design.In this paper, the author detailed introduced the calculation method of motor driven power of heavy apron feeder and modeling method of virtual prototype. The process of establishing coupled model and the finite element model of key components was given to provide guidance and help for the future design of heavy apron feeder.