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意大利一公司制造的名为“WUPAR83”的车轮防滑装置最近通过国际铁路联盟鉴定。本装置在阻止打滑过程中能不断地调整制动缸压力,使容许打滑值保持在最大粘着力的规定范围内。通过传感器和齿轮测定车辆各车轴的速度,随后通过信号处理决定加速度。在分配器和各转向架的制动缸连接的管路上安装两个阀,当探测到某个车轴减速过量时,可以根据需要起减压作用,此时一个阀遮断向气缸的送气,由另一个阀使气缸排气。
A wheel anti-skid device made by an Italian company called “WUPAR83” was recently certified by the International Union of Railways. The device in the process to prevent slipping can continue to adjust the brake cylinder pressure, so that the allowable slipping value in the maximum adhesion within the prescribed range. The speed of each axle of the vehicle is measured by sensors and gears, and then the acceleration is determined by signal processing. Two valves are installed on the pipe connecting the distributor and the brake cylinder of each bogie. When an excessive deceleration of an axle is detected, the valve may be depressurized as required. At this time, one valve interrupts the air supply to the cylinder, A valve exhausts the cylinder.