Functions of modern tamping machines include lifting and tamping the track, as well as lining the track to make it parallel and level. They are the current high-performance maintenance equipment involved in hammering track ballasts. As a result, tamping machines are highly needed and large in demand. The core part of the tamper machine is called the Automatic Guiding Computer ( AGC). Put forward a scheme based on Qt in Linux which is convenient for manipulating, and make GUI become more interactive and safe, it particularly describes this system' s whole frame and how to make use of signals. Experimental results show that GUI for tamper machine' s AGC system based on Qt in Linux environment has good stability and security ,it facilitates to transplant the tamping machine' s AGC system on embedded development board in the future.%捣固车是具备拨道、起道、捣固等功能并应用于铁路线路维护的高效现代化有碴轨维护设备,也是维护铁路线路需求最多的装备.捣固车自动引导控制系统是捣固车作业控制系统的核心部件.为了便于工人操作,使图形用户界面能有更好的交互性和使用安全性,提出了一种在Linux环境下基于Qt的实现方案.结合实际开发过程,详细描述了系统界面的构成与实现功能,以及Qt信号与槽机制的应用.实验结果证明Linux下基于Qt的捣固车AGC图形界面有很好的稳定性和安全性,便于未来将捣固车自动引导系统移植到嵌入式开发板上.
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