An underhung crane, also known as an under-running crane or underhung bridge crane, is a type of overhead crane where the bridge (horizontal beam) is supported by the building structure, and the hoist and trolley run along the bottom flange of the bridge.

Kren jambatan dua gelanggang underhung SEVENCRANE ialah kren jambatan biasa dengan troli elektrik. Parameter prestasi kren jambatan dwi-girder termasuk: kapasiti mengangkat, ketinggian angkat, rentang, kelajuan kerja mekanisme, tahap kerja, tekanan roda, dsb.

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: