Constitute a bridge crane

bridge crane is commonly used as a factory lifting and transportation machinery, accounting for about 80% of the total number of all cranes, so it's safe management and use is very important. The statistical results of the incident. Bridge crane accident caused the largest proportion. Such as lifting 42 deaths and serious injuries to statistics, since  overhead bridge crane  accidents caused 90% of the total accidents. I plant the existing ll station bridge crane, rated load of 5 to 15 tons in recent years, in daily use and management of the process, found a number of factors that affect the performance of the equipment unsafe, if not promptly treated, ranging from failure, affecting normal production, while in an accident. The following analysis may exist in a variety of  bridge crane  insecurity. Depending on the device so that the practical problems, propose effective approach.

Constitute a bridge crane
Bridge crane with a hook (also useful for power grab or disk) heavy lifting equipment, the appearance of the bridge, the bridge ends on the track by the roller frame. Walking along the track rollers, drive trays moved from the structural point of view, bridge cranes mainly consists of three parts, namely, metal structures, mechanical transmission, electrical equipment.
(1) metal structure is mainly composed of bridge, walkway, the cab and the like. It is mainly exposed to heavy, placement machinery, electrical equipment,  overhead bridge crane s whole group of friends.
(2) mechanical transmission part includes carts parts and car parts. Some with carts carts run institutions, with a small portion of the frame trolley run institutions, such as the lifting mechanism.
(3) electrical equipment are protected disk (switchboard), controller, collector (supply Waterloo line), electrical lighting and various limit switch, interlock switch, grounding and other safety devices.