龙门架是根据中、小工厂（公司）日常生产需要搬运设备、仓库进出货，起吊维修重型设备及材料运输的需要，开发出来的新型小型起重龙门架。适用于制造模具、汽修工厂、矿山、土建施工工地及需要起重场合。常见的在建筑施工中兼作材料运输和施工人员的上下使用，实现起重机械化。可减少人力，降低生产运营成本，提高工作效率。
严格按照《龙门架使用说明书》的操作规定条件和作业顺序进行安装。
In strict accordance with the "Longmen shelf manual" operation conditions and operation sequence installation.
动力装置包括液压泵、 液压缸、导轨和龙门架，龙门架与壳体固定联接；
The power plant includes a hydraulic pump, a hydraulic cylinder, a guide rail and a gantry. The gantry is fixedly connected with the casing.
有些情况下，地铁车辆还要通过公路运到车辆段交货，这种情况下必须考虑设计有硬化的卸货场地和起重设备，如起重机或龙门架。
In some cases, it is necessary to provide car delivery access by road. Hard standing areas and unloading facilities like cranes or gantries must be considered when designing such a depot.
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