Int J Performability Eng ›› 2019, Vol. 15 ›› Issue (7): 1886-1894.doi: 10.23940/ijpe.19.07.p15.18861894

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Analysis of Meshing Performance and Fatigue Reliability of Main Reducer Transmission Device for Rail Conveyor

Wenzhi Liu, Tianxiang Wang*, and Jian Tao   

  1. Institute of Mechanical Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China
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  • Supported by:
    This work is supported by the Key Scientific Research Project of the Inner Mongolia Autonomous Region University (No. NJZZ18075), the Natural Science Fund of the Inner Mongolia Autonomous Region (No. 2018MS05060), and the Talent Development Fund of the Inner Mongolia Autonomous Region.

Abstract: Aiming at the reduction gear transmission of a rail conveyor, the two-stage main gear transmission system is taken as an example to establish the contact collision dynamics calculation model of the meshing gear teeth. The contact force of each gear speed and the tooth flanks of a gear with different helix angles in one motion cycle are calculated and analyzed. Based on the kinetic calculation results, the finite element calculation model of gear transmission friction contact is established. The Lagrangian multiplier method is used to calculate and analyze the meshing performance of the teeth under different helix angle contact conditions during one motion cycle. In order to avoid the contact fatigue of the gear teeth, the dangerous position of the tooth surface contact fatigue is obtained by finite element calculation. Based on the miner linear cumulative damage theory, the contact fatigue damage degree of the tooth surface of the tooth is obtained under different helix angle contact conditions.

Key words: gear reducer, dynamic analysis, contact stress, fatigue damage