机车辅助电机试验台研制
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摘要
随着铁路提速和运营生产的市场化,机车运行负荷逐年增加,为了有效保证机车的运行安全,机车检修必须从定期维修向状态维修转变,以提高机车检修的速度和质量,降低机车检修成本,更重要实现检修自动化、数字化,完成对机车检修数据进行有效的记录管理,建立机车关键设备的状态参数数据库,从而实现对机车状态有效控制。机车辅机试验台便是负责对直流电机、交流电机、劈相机等机车辅机综合性能的试验检修测试的设备之一。
     为适应机车检修水平现代化的发展步伐,本文研究设计了基于PLC和触摸屏技术控制的机车数字化辅机试验台,作为常规的手动开关和继电器控制试验台的升级换代产品,通过人机界面(HMI)——触摸屏完成对直流电机、交流电机、劈相机的试验检测操作。要求本试验台可以动态显示试验对象参数和故障状态,自动存储试验结果,实时打印文字图表,有多种表达形式的试验记录和故障信息,有自动保护功能、预置参数功能、信息实时上传和下载功能。同时,试验台增加了密级和登记操作管理等智能化功能,实现记名记车检修,从而有效提高辅机试验的自动化程度和机车检修生产管理水平。现场安装试验表明,该系统操作简便,可靠性高,具有重要的推广应用价值。
With the speed-raising of railway and the marketing of the management, the load that the electric locomotive burdens increased annually. In order to guarantee the security of the locomotive, the overhaul must be transited from preventive maintenance to state maintenance, which can accelerate the speed and the quality of the locomotive overhaul and reduce the overhaul cost. The most important achievement is that the overhaul can be performed automatically and digitally and can be effectively competent for the record management of the overhaul data. Besides, it can set up a database about some central equipment's state parameters. Thus it can make effective control of the state of the locomotive. The auxiliary motor test-bed is one of the devices which can examinant and tests the auxiliary motor's general performances such as D.C engine, A.C engine and phase converter.
    In order to adapt well to the development of the overhaul with the locomotive, the article introduces a digital auxiliary motor test-bed based PLC and touch screen technology, being an updated product of routine manual switch and relay-controlled test-bed, it can accomplish the functions such as testing, checking and other manipulations to D.C engine, A.C engine and phase converter through HMI-touch screen. It is demanded that the test-bed can dynamically display the parameters of tested device and its malfunction states, store the results of the test automatically, and print some characters and graphs in real time. Besides, it should be provided with the many functions including multifarious testing records and malfunction information, automatic protection, presetting parameters, download and upload in
    
    
    
    real time. Meanwhile, some intellectualized functions such as encryption techniques, manipulating and managing after register, memorizing the locomotive's name when repairing are added into the system, which will effectively improve the level of automation of for testing the auxiliary motor as well as the level of the producing, overhauling, and the management to the locomotive. The installation and experimentation on the site shows that the system is easily manipulated and in high reliability so it deserves for extending use.
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