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以集装箱桥吊的驱动器节能改造项目为例,分析了西门子双起升、双小车桥吊能耗较大的原因,通过与其他型号桥吊的对比,提出了进行改造的可能和具体方案。通过切断断路器,并修改相应控制程序,实现主司机室、门架司机室分开控制相应机构驱动器。当门架不动时,可以单独使门架起升和门架小车驱动器,以实现主小车装卸船时能耗减少。在桥吊不装卸船时,可以停止对主起升和主小车驱动器供电,实现节能。通过微小的外部硬件和接线改造,在基本不增加成本的基础上,主要依靠可编程逻辑控制器(PLC)程序的改编,实现了既定的节能改造效果。经过一段时间的使用,节能效果非常显著,可为同型号桥吊节能改造提供有益参考。
Taking the drive crane energy conservation retrofit project of container bridge crane as an example, the reason of large energy consumption of double lift crane and double crane suspension in Siemens was analyzed. The possible and specific scheme of rebuilding was put forward by comparing with other types of crane. By cutting off the circuit breaker and modifying the corresponding control program, the main driver’s cab and the gantry driver’s cab can be separately controlled to drive the corresponding agencies. When the mast is not moving, the mast can be lifted and mast drive separately to reduce the energy consumption of the main car when loading and unloading the mast. When the bridge crane is not loading or unloading the ship, it is possible to stop supplying power to the main lifting and main car drive to save energy. Through minor external hardware and wiring transformation, basically no additional cost, based mainly on programmable logic controller (PLC) program adaptation, to achieve the desired energy-saving effect. After a period of use, energy-saving effect is very significant, which can provide useful reference for the energy-saving reconstruction of the same type of bridge crane.