The name of railway vehicle axle parts and function introduction

The various parts of the railway vehicle axle name and function introduction, 2018 - 09 - 05, rolling bearing axle 1. Axle center hole: processing and assembly, processing, machine tool for fashion top pinhole fulcrum, and can be used as a proofreading axis neck, the center of the wheel roundness. 2. Shaft end bolt hole: before installation of bearing cover or clamp, prevent migrated through the rolling element bearing. 3. Journal: put bearing, under vertical load. 4. Unloading trough: for grinding shaft neck to grinding wheel knife, back up the effect of relief groove, can reduce the bearing inner ring after assembly and the contact stress between each other, and to improve the fatigue strength of here. 5. Axis neck shoulder: shaft neck and dust shield between transition arc, can prevent stress concentration. 6. Dust shield block: bearings after installation file and limit the rolling bearing. 7. Round shoulder before: dust-proof plate bridge with round the transition between the circular arc, can prevent stress concentration. 8. Wheel seat: fixed wheel, is the biggest stress of axle parts. 9. Round shoulder: after the wheels with the transition between the shaft and circular arc, can prevent stress concentration. 10. Axis of the body: the middle axle connection parts. 11. Shaft end chamfering: shaft end is equipped with 1:10 chamfering, its effect is a leading role in the rolling bearing installation. Second, sliding bearing axle sliding bearing and rolling bearing axle axle parts name and function basic same, the difference has the following points: 1. Offshoring add shaft collar: the main is to prevent the bearing shell. 2. Journal: install sliding bearing bush. 3. No shaft end bolt hole. 4. There is no unloading slot.