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挪威NRS公司LG600下行式架桥机由支撑托架及支腿、推进小车、液压设备、主梁、鼻梁、龙门吊和节段悬挂梁组成,它能架设跨度为25m至35m,最大工作荷载为600t,最小曲线半径为600m;同时可根据现场的施工场地条件在架桥机中部、端部、侧面喂梁。下行式架桥机整机支承在支撑托架上,通过支撑托架将架桥机和整跨梁的重量传递在承台上,原设计支撑托架的高度为3．85m,只适用于墩高3．8m以上的节段梁架设。
Norway NRS company LG600 down the bridge by the support brackets and legs, propulsion car, hydraulic equipment, the main beam, bridge of the nose, gantry crane and segment suspension beam composition, it can span 25m to 35m, the maximum working load of 600t , The minimum curve radius of 600m; at the same time according to the site construction site conditions in the erecting machine central, end, side beam. The down-bridge machine is supported on the support bracket, and the weight of the erecting machine and the whole cross beam is transmitted on the support platform through the support bracket. The height of the original design support bracket is 3.85m, which is only applicable to the pier 3.8m high segment beam erection.