Brake trains

Check the brakes - braking step of the moving train at a given step of the way to verify the distance or time to reduce speed to 10 km / h or deceleration during braking, orienting the driver in the further conduct of the train, and identifies crash brakes. When testing is impossible to determine the security of train brake pressing, as it has completed the first stage at which the pressure in the brake cylinder cars is almost independent of the regime (empty, medium, loaded) by reason of the characteristics of air distributors, ie, for example, the case departure loaded to its maximum capacity trains in empty mode practically can not be detected reliably. Therefore, a satisfactory test result of the brakes really characterizes their status only in conjunction with appropriate preparation, brake equipment, and the only document describing the press brake the train, a reference form of VU-45, issued to employees of rolling stock engineer.

The most accurate brake press is determined by the results of the pilot test of the brakes using the brake nomograms for ways to provide empirical stopping distance train in emergency braking, or according to the emergency brake on trains skorostemernoy tape. It should be known to the braking distance, initial velocity and inhibition profile path. In some cases, defined in this way the brake depression in freight trains is lower than specified in the certificate form ED-45. The reason is that cars can have a significant number of cast iron brake shoes, put in place compositional (calculated brake pressing iron brake pads mounted on the lever transmission composite is only 0,7 to 0,6 for freight and passenger cars from the normative in appropriate mode include diffuser). With increased to 180-230 mm in the output rod brake cylinder press brake design should be reduced by 30%, while the output of more than 230 mm stock car may have a generally approaching zero braking effectiveness, as the piston rests on the cover of the brake cylinder.

Subtopics:

• Traffic Safety
• Places verification
• Priority check
• Specific conditions of inspection