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针对铁路货车制动缸缓解弹簧检测工艺的技术要求,在数控测控方面进行了详细的阐述和分析,并研制出了一种以西门子S7-200系列PLC为控制核心的检测装置。该装置由机械、电气、软件三部分组成,可实现数控系统的精确定位控制和计算机与PLC的串行通信,并以专家控制方式对整个检测过程进行实时监控,具备智能化功能,可自动记录管理数据,判断检测结果,分析故障原因,可完成制动缸缓解弹簧的自由高检测和分段回弹力检测。目前,该装置已被中国北车集团沈阳机车车辆有限责任公司使用。
Aiming at the technical requirements of relieving spring detection technology of railway freight car brake cylinder, the paper elaborates and analyzes in detail the numerical control and control, and develops a testing device which takes Siemens S7-200 series PLC as the control core. The device consists of mechanical, electrical and software components, which can realize the precise positioning control of the numerical control system and the serial communication between the computer and the PLC. With the expert control mode, the whole testing process can be monitored in real time. With the intelligent function, the device can automatically record Management data, determine the test results, analyze the cause of the malfunction, to complete the brake cylinder relief spring free high detection and segmental resilience detection. At present, the device has been used by CNR Shenyang Rolling Stock Co., Ltd.