| 摘要 |
PURPOSE:To simplify a constitution by a method wherein the pressure of an air brake pipe is transmitted to a stopping brake pattern generating circuit through an air pressure-voltage transducer, and an electric brake pattern is obtained. CONSTITUTION:The air pressure of a brake pipe TFA is controlled by manually operating a brake valve BV of an air transducer BP or exciting a braking solenoid B and a taking-off solenoid R. The air pressure of the brake pipe TFA is supplied to a brake cylinder BC through a cut-off solenoid valve PAMV. An air pressure- voltage transducer TD, on the other hand, converts the air pressure of the brake pipe TFA into voltage, and forwards it to a field chopper device FCH through a stopping brake pattern generating circuit SBPC and a comparison amplifier AMP. A current relay CR excites the cut-off solenoid valve PAMV when a fixed quantity or more of generating braking force is generated, and cuts off air brake. |
