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.

Industriel elektrisk topløbende brokran er en meget brugt type inden for kraner på dette stadium. Den består af fire hoveddele: fjernbjælke, endebjælke, trolley og elektriske apparater. Det bruges normalt i mange industriel produktion og løftetransport, såsom indendørs og udendørs jernbanetransport, minevirksomheder, stålindustri, havne og terminaler osv., hvilket fremmer den hurtige udvikling af storstilet industriel produktion og løftetransport.

SEVENCRANE underhængt dobbeltbjælkebrokran er en almindelig brokran med elektriske vogne. Ydeevneparametrene for dobbeltbjælkebrokranen inkluderer: løftekapacitet, løftehøjde, spændvidde, mekanismens arbejdshastighed, arbejdsniveau, hjultryk osv.

Industriens elektriske underhængte dobbeltbjælkebrokran har overlegen ydeevne, kompakt struktur, let vægt, pålidelighed og drift og kan opfylde forskellige arbejdsforhold. Det kan reducere den samlede investering i fabrikken, forbedre produktionseffektiviteten, reducere vedligeholdelsesomkostningerne og spare driftsenergiforbrug.

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.

The cost of transportation, installation, commissioning and maintenance of bridge cranes will usually account for a part of the total cost, but the specific proportion will be affected by many factors, including the type of crane, size, design requirements, installation location and operating environment, etc.