The basic construction of bridge crane is the same as the hook bridge crane

The basic construction of bridge crane is the same as the hook bridge crane, the difference is on the hook to hang a dc lifting hoist gantry crane (also known as the electromagnetic sucker), used for lifting with magnetic conductivity of ferrous metals and their products. Usually after in bridge walked electric generating set on the stage or in a driver indoor SCR dc to ac power to dc power supply, and then through the trolley frame of special cable drum, dc power supply with flexible cable to lifting electromagnet. Bridge crane bridge crane has three types: grab hook bridge crane, electromagnetic hook bridge crane grab and electromagnetism bridge crane. Its characteristic is everywhere in one car is equipped with two sets of independent lifting mechanism, a set of grab bucket, a hook with (or a set of steel crane chuck with a hook, or a grab for magnetic chuck with a set of use). According to the need can use hook lifting heavy objects, and can also be on the hook to hang a motor grab unloading material, also can unload the grab to hang black metal disk lifting, so called three bridge (renewable) using a crane. As a result, the models must be the same with electromagnetism bridge crane, set up the electric generator or SCR dc power box. This kind of crane is applicable to often change for plant material place. Double bridge crane this crane and hook bridge crane basic same, just the bridge rack is equipped with 2 sets up the same weight of the car. This model used for lifting and handling elongated objects.