悬臂起重机，也称为下行起重机或悬臂桥式起重机，是一种桥式起重机，其中桥架（水平梁）由建筑结构支撑，并且提升机和小车沿桥架底部法兰运行。

工业电动顶行桥式起重机是现阶段起重机领域应用广泛的类型。它由主梁、端梁、小车和电器四个主要部分组成。通常应用于室内外铁路运输、矿山企业、钢铁行业、港口码头等众多工业生产和起重运输，促进了大规模工业生产和起重运输的快速发展。

SEVENCRANE下悬双梁桥式起重机是一种常见的电动小车桥式起重机。双梁桥式起重机的性能参数包括：起重量、起升高度、跨度、机构工作速度、工作高度、轮压等。

工业电动下悬双梁桥式起重机性能优越，结构紧凑，重量轻，运行可靠，能满足各种工况。可以减少工厂的整体投资，提高生产效率，降低维护成本，节省运行能耗。

Industry electric underhung bridge crane is a major lifting and transportation equipment in the production logistics process, and its utilization efficiency is related to the production rhythm of the enterprise. At the same time, underhung bridge cranes are also dangerous special equipment and may cause harm to people and property in the event of an accident. The driver of the overhead crane is the most active and critical factor in the use of the overhead crane. The driver's ability to operate the overhead crane is very important and is a major issue directly related to the company's efficiency and safe production. The author summarizes his own practical experience in operating bridge cranes and puts forward the following operating experience based on the characteristics of bridge cranes.

桥式起重机的运输、安装、调试和维护费用通常会占到总成本的一部分，但具体所占比例会受到多种因素的影响，包括起重机的类型、尺寸、设计要求、安装位置和运行环境等。