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。

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。

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.

Intelligent underslung bridge crane systems are used in many industries, including but not limited to the following: