SEVENCRANE underhung bridge crane is a lifting equipment that is placed horizontally over workshops, warehouses and yards for lifting materials. Because its two ends are located on tall cement pillars or metal supports, it looks like a bridge. The bridge of the bridge crane runs longitudinally along the tracks laid on the elevated structures on both sides, making full use of the space under the bridge to lift materials without being hindered by ground equipment. It is the most widely used and most numerous type of lifting machinery.

Underhung overhead crane with complete runways are mainly used for the transportation of materials in indoor machinery manufacturing and processing workshops, assembly workshops, warehouses, material yards, for lifting fixed maintenance equipment such as power plants, and other occasions. They can also be used in metallurgy and casting workshops as auxiliary lifting equipment. Besides, it is not suitable for flammable, explosive, combustible gas, dust and corrosive gas environments. However, it is not suitable for nuclear radiation environment and toxic gas environment.

The industry electric underhung double girder bridge crane has superior performance, compact structure, light weight, reliability and operation, and can meet various working conditions. It can reduce the overall investment in the factory, improve production efficiency, reduce maintenance costs, and save operating energy consumption.

The wire rope electric hoist is a small lifting equipment with the advantages of compact structure, light weight, small size, strong parts versatility, and easy operation. It can be installed on hoist single beam, bridge crane, gantry crane, and jib crane.

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 new Chinese-style explosion-proof wire rope electric hoist meets JB/T 10222-2011 "Explosion-proof Electric Hoist", GB3836.1-2021 "Explosive Environment Part 1: General Requirements for Equipment" and GB3836.2-2021 "Explosive Environment Part 2: By Partition "Equipment protected by explosion enclosure "d"" national standard requirements.