基于PLC的变频牵引机车重联控制系统

Reconnection Control System of Frequency-conversion Traction Locomotives Based on PLC

国内隧道施工多使用变频牵引机车(后文简称机车)进行物料的运输,随着隧道施工进度的加快,对物料运输吞吐量也有更高要求,这就要求机车能够提供更大的牵引力。分析机车现有的控制系统以及重联控制对控制信号传递和数据处理的要求,利用机车现有的PLC控制系统设计了重联控制系统,并用1台40 t和1台20 t机车进行双机车重联同步运行从而实现更大的牵引力,提高物料运输吞吐量。由于利用了现有机车,单台机车规格不变,所以对轨道要求不变,同时重联运行的2台机车使用灵活,既可以重联后作为一个整体使用,也可以在需要的时候分开单独使用,提高了施工效率和设备利用率,节省了施工的成本和时间。

Frequency-conversion traction locomotives are commonly used in tunneling in China.With the growing of the tunneling speed,more materials are to be transported in tunneling,which requires that the locomotives should have greater traction force.In this article,the existing control system of the locomotives and the requirement of the reconnection control system on the signal transmission and data processing of the reconnection control system are analyzed,and a reconnection control system is designed for a 40t locomotive and a 20t locomotive based on existing PLC control system,so as to improve the traction capacity of the locomotives.The reconnection control system designed has many advantages,which improves the tunneling efficiency and the equipment availability,reduces the construction cost and shortens the tunneling period.