Modification Method of Tooth Profile of Locomotive Traction Gear Based on Rodent Arm Variation

  • Lei Lei Department of Mechanical Drive, School of Mechanical Engineering, Dalian Jiao Tong University, 116000 Dalian, P. O. B. 289#, China
  • Haichun Ding Department of Mechanical Drive, School of Mechanical Engineering, Dalian Jiao Tong University, 116000 Dalian, P. O. B. 289#, China
  • Liang Xuan Department of Mechanical Drive, School of Mechanical and Architectural Engineering, Jianghan University, 430050 Wuhan, P. O. B. 22#, China
  • Meichao Qin Department of Mechanical Drive, School of Mechanical Engineering, Dalian Jiao Tong University, 116000 Dalian, P. O. B. 289#, China
  • Siyuan Tian Department of Mechanical Drive, School of Mechanical Engineering, Dalian Jiao Tong University, 116000 Dalian, P. O. B. 289#, China
  • Yunan Sui Department of Mechanical Drive, School of Mechanical Engineering, Dalian Jiao Tong University, 116000 Dalian, P. O. B. 289#, China

Abstract

Locomotive traction gear is the key component to power transmission and speed control in locomotive transmission system, which plays an important role in locomotive running speed and load-carrying torque. Considering that there is not universal rule for the method of modification of locomotive gear at present, in this paper, the tooth profile modification is considered with the combination of the increased contact ratio and the variation of the moment arm of action. Based on the principle of modification, according to the load direction after modification, the change rule of moment arm of action after modification is determined, and the interval range of tooth profile modification is also determined. Taking a certain locomotive traction gear as an example, the results obtained through the method of modification which based on combining moment arm of action variation with the increase of contact ratio and the method based on the traditional empirical formula are compared through finite element simulation respectively, on this account to verify the superiority of the theory of modification, which has important theoretical significance for profile modification of locomotive traction gear.

Keywords: locomotive traction gear, contact ratio, moment arm of action, modification coefficient, profile modification
Published online
2019-06-14
How to Cite
Lei, L., Ding, H., Xuan, L., Qin, M., Tian, S. and Sui, Y. “Modification Method of Tooth Profile of Locomotive Traction Gear Based on Rodent Arm Variation”, Periodica Polytechnica Transportation Engineering. doi: https://doi.org/10.3311/PPtr.12633.
Section
Articles