在中铁建设局承接各标段的路桥工程中，The most commonly used crane is the double main beam gantry crane，Therefore, this kind ofcrane也被称作路桥门机、路桥Gantry crane、路桥crane、架桥机等多种名称。Why can double girder gantry cranes be widely used in the road and bridge industry，What are its characteristics？Please refer to the analysis of East China Crane Group。
           
双main beam花架路桥门机多用于路桥工程项目制梁厂、Material yard，吊装桥梁使用。Bridge gantry crane can be divided into single hook gantry crane and double hook gantry crane，也可以说是单小车Gantry crane和双小车Gantry crane。这种Gantry craneStanding legs with flower racks. Standing legs（有角钢、方钢拼装）Two types of structures: circular tube and vertical leg，起重量没有固定量，All are produced according to the requirements of the user unit，The operation mode of the double main beam flower rack door machine is mostly operated by the driver's cab, and there are also two ways to modify the remote control operation。主要点就是结构简单，Road and bridge gantry crane金属结构件采用销轴或者法兰联结，其主要结构由：Large vehicle walking、支腿、main beam座、main beam、Lifting the car、Stabilizer bar、Balanced beam、操作室、Composed of nine parts including the base of the control room。利于运输安装及拆卸，对工作场地要求不高，运行速度较稳，Two gantry cranes are required to work together when lifting a bridge with a single trolley gantry crane，The double trolley gantry crane lifting bridge can be completed independently, but it requires a larger span。The gantry crane with flower frame structure is less prone to collapse accidents due to wind resistance in areas with high wind and sand loads。

Road and bridge gantry crane还有质量好、价格低等优点，对用使用time较短的用户，如果购买的话就比较不划算，因为工期完工之后，路桥Gantry crane就没有用了，If a second-hand gantry crane is used for processing, the price will be lower if it is not fully priced（Basically, it's the price of scrap iron），而且也不好卖，所以We从客户角度出发对于短期路桥工程，还可以提供Road and bridge gantry craneRental Services，路桥Gantry crane租赁过程中的安装运输及拆卸工作均有We承担，用户可以选择按月租及按年租。This can help users reduce a significant amount of engineering expenses。Friends in need can contact us，Contact phone number：13903802779（Manager Jia）