Automatic Inspection System Of Railway Passenger Car Brake Valve Spring

Brake valve train air brake system is the main component, brake in good condition is important to ensure the safe operation of trains, and accurate brake and brake individual action or not directly related to the parameters of the spring, so railway vehicles are required to brake in the spring when the plant detects geometric parameters repair or depot repair. The main objective of this research is the use of advanced and mature technologies and products, development of brake springs automatic detection system, brake springs for passenger cars with automatic detection.The hardware of the system mainly uses servo motors, encoders, weighing sensors can achieve precise control products, software part using C++ Builder system development.Servo motor (servo motor) is a mechanical device control movement in the servo system of the engine. Rotor speed servo motor controlled by the input signal, the electrical signal can be received quickly converted into angular displacement or angular velocity of the motor output shaft, it is possible to quickly react and can accurately control the position and speed control. Use servo motor as a power source in this system, used to perform the action command.Grating is a measure of the use of optics grating feedback device to carry out the work. Grating measurement signal into a digital pulse output, with a detection range, high precision, fast response characteristics. According to different manufacturing methods and optical principles, grating can be divided into transmission grating and reflection grating, its accuracy can reach micron level. In this system, the use of linear encoders as a brake valve spring height measuring device for the specific detection of the height of the spring brake valve.The load cell is a device capable of mass into a measurable electrical output of resistance strain gauge load sensor accuracy and high sensitivity, good stability, long life, environmental requirements are less stringent, therefore, in this system, the choice of resistance strain gauge load cell as a pressure sensing element, both as a feedback signal to ensure the system is properly directed, but also as the bearer and the pressure sensing member, involved in the actual measurements.C++ Builder is a visual integrated development tools from Borland introduced a object-oriented applications. It is fast, easy visual development environment and powerful. In this system, the use of C++ Builder programming software, developed brake spring automatic detection system application software, enables application software has a visual user interface, improved database systems and data processing and other functions, to achieve automatic detection system brake spring measurements, the results display, data storage, query, print and other operations.The topic of the key technologies and methodologies system were studied in detail description of the hardware components, software and other preparation work has made a careful study of convergence, from the perspective of the actual doing spring brake system can be automatically detected operability and feasibility. Finally, the error is a simple case of system analysis and improvement program and system development.