Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Efficiency optimization of freight wagon brake rigging
Submission Author:
Samuel Ferreira , MG , Brazil
Co-Authors:
Anderson Gomes, Pedro Proença, Francisco José Freitas Lopes, Claysson Vimieiro, Samuel Ferreira
Presenter: Samuel Ferreira
doi://10.26678/ABCM.COBEM2017.COB17-2847
Abstract
The railway wagons need a brake system in good condition to be used, because this system is responsible the control of the train speed. The brakes are always tested before starting a trip, in a workshop after maintenance or even when attaching other wagons along the stretch. This system does not allow failures as it can lead to serious accidents, affecting the merchandise present in the composition, safety and health of railroad employees, environment and surrounding community. The study elaborated here deals with the brake system of the freight wagons that cross the Brazilian railroads. The entire operation of the brake system is studied and detailed, as well as the characteristics and functions of each component that contains it. From this study, the causes and effects of brake rigging looseness that cause the loss of braking efficiency and brake reliability are analysed, and then the production of scaled rigging brake is made to analyse possible improvements of efficiency as change of forms or levers reductions of the brake rigging. The first proposed solution is to insert a bearing between the brake levers and connecting rods of the brake rigging, reducing the friction between the parts that are in contact. The second solution is the inner coating of the holes of the connecting rods and brake levers by a material with greater resistance to wear, thus reducing the shape change of the orifice and consequently, looseness of the brake rigging.
Keywords
Train, Freight train, Freight wagon, Brake Rigging, Rail Brakes, wagon
