Research on Assembly Process of Small Gear Shafts of Standard Multiple Unit Train
To analyze the problem of unstable bearing clearance of the small gear shaft during the assembly and running in process of the standard multiple unit gearbox,it was identified that the influencing factors on the bearing clearance of the small gear shaft bearings(column+column+ball)of the standard multiple unit gearbox.Through theoretical analysis,factors that may affect bearing clearance(such as the measurement method of pinion shaft clearance,inadequate assembly of components,and distribution of ball bearing outer rings)were proposed,and experiments were conducted to determine that the assembly of the sealing cover affected bearing clearance.By optimizing the assembly process of the sealing cover and comparing the clearance after assembly with running in of the gearbox,it was confirmed that the optimized assembly process could effectively control the clearance of the small gear shaft bearings.
standard multiple unit trainmaintenancegearboxbearingsclearanceassembly process
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