Overhaul and Reinstallation Technology of Wheel-mounted Brake Disc of EMU

Abstract

The invention discloses an overhauling and remounting process for a brake disc mounted on a wheel of a motor train unit. The overhauling and reassembling process comprises the steps of quantitatively machining the brake disc to reduce the deformation amount; formulating standards such as contact surface deformation amount; finishing relevant overhauling processes such as turning, dismounting, cleaning, measuring and testing; and formulating relevant remounting requirements (such as fastening way and order) as well as standards after preassembling and final mounting to finish the remounting of a wheel disc. A type test is performed on the basis of a 1:1 brake force test procedure after remounting is qualified. At present, the trial overhaul for parts of discs is performed, and it is in a scheme adjusting and affirming process. A technology which is blank in the wheel disc overhauling and remounting industry is achieved, excessive overhaul is avoided, the overhaul cost is greatly reduced, the price of each set of new disc is about 25,000 RMB, and the unnecessary storage space is reduced.

Description

technical field [0001] The invention belongs to the technical field of rail vehicle component overhaul, and in particular relates to the standard and process of removing, overhauling and reinstalling a wheel-mounted brake disc of an EMU from an old wheel. Background technique [0002] At present, there are no precedents, standards and relevant experience in the industry for the removal, maintenance and re-installation of wheel-mounted brake discs for high-speed EMUs (speeds higher than 200km / h). must also be scrapped. In the advanced repair stage of the EMU, the inner hole of the wheel is prone to scratches, which leads to the scrapping of the wheel, or the wheel is worn to the limit and needs to be scrapped. New discs) can only be scrapped together, resulting in a great waste, and the feasibility study of dismantling, overhauling and reinstalling the roulette is imminent. SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the present invention is: b...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: because the wheel is scrapped and the wheel disc has no maintenance and reinstallation standards, it must be scrapped accordingly.