Braking systems of trains

In stock brake cylinder passenger car with composite pads installed clamp length of 70 mm. At a total length of the clamp (Fig. 2) the piston rod 2 with brake cylinder does not reach the initial position when the brake is released completely, increasing the amount of "harmful" Space brake cylinder about 7 liters. Thus, at full output shaft 130-160 mm in the complete inhibition of movement of the piston is only 60-90 mm. This ensures that the amount of brake cylinder that is required for normal operation of the diffuser number 292. Nedohodom piston to the starting position of 70 mm is provided by the normal clearance between the pads and wheels to the brake released condition.

The average gap between the pads and the wheels is determined by dividing the maximum stroke no stroke due to elastic deformations on the ratio linkage, ie, passenger car with the output shaft 130 mm, the elastic deformation of 30 mm, length 70 mm clamp (130 -30-70): 5.4 = 5.5 mm, as it exits the rod 160 mm (160-30-70): 5.5 = 11.1 mm.
If the clip was absent, the gaps are, respectively, in the course of the piston 130 and 160 mm were (130-30): 5.4 == 18.5 mm, and (160-30): 5.4 = 24.1 mm, which is unacceptable.

On the freight cars in the brake cylinder pressure is independent of the output shaft. Therefore, when installing composite output pads brake cylinder piston rod reduce freight car, which ensures the necessary clearance between the pads and wheels. Decrease in stroke reduction is achieved by spending the compressed air braking, accelerating after braking, charging the brakes and their willingness to re-inhibition, which is important when frequent braking in plain view.