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.

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.

(1) The motor type, basic parameters, performance and size should comply with the design of the product and the use requirements of the host. (2) The protection level of the motor shell should not be lower than P44 (except for the wind cover).

(1) The electric hoist should be equipped with rising and falling limit position limiters, and can ensure that the power supply is automatically cut off when the hook is raised and lowered to the limit position. At this time, the action in the opposite direction should be possible.

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