Purpose of inspection of brakes on the journey


Check the brakes - braking stage of a moving train at a given step of the way to check the distance or time, reduce the speed of 10 km / h or deceleration during braking, the driver for orienting the further conduct of the train, and identify emergency brake failure. When checking the action is impossible to determine availability of train brake press, as it is performed the first stage at which the pressure in the brake cylinder car is almost independent of the mode (empty, medium, loaded) by reason of the characteristics of the diffusers, ie, for example, the case departure loaded to maximum capacity on trains unloaded mode, can not practically be detected reliably. Therefore, a satisfactory test result of the brakes actually characterizes their status only in conjunction with appropriate training brake equipment, and the only document describing the brake push the train, a certificate form HL-45, issued to employees of Rolling Stock engineer.

Most accurately determined by the results of pressing the braking control the brake test using a nomogram derived braking ways to experimentally train braking distance in emergency braking or emergency braking on these trains with skorostemernoy tape. This should be known to the braking distance, initial velocity and inhibition profile path. In some cases, determined by pressing the brake so freight trains is lower than specified in the certificate forms of HL-45. This is explained by the fact that cars can be a significant amount of iron brake shoes, set at the place of composition (calculated brake pressing iron brake pads installed on the linkage composition is only 0.7 and 0.6 on the cargo on passenger cars from the norm in appropriate mode enable the diffuser). With increased to 180-230 mm output shaft brake cylinder brake pressing estimated to be reduced by 30%, while the output shaft of more than 230 mm may have a car at all approaching to zero braking effectiveness, since the piston rests on the cover of the brake cylinder.


Subsections: