QZ type electric grab bridge crane is mainly composed of a box shaped bridge, a grab trolley, a crane operating mechanism, a driver's cab, and an electrical control system. The retrieval device is a grab bucket capable of grabbing bulk materials.

The grab bucket car has an opening and closing mechanism and a lifting mechanism, and the grab bucket is suspended by four steel wire ropes on the opening and closing mechanism and the lifting mechanism respectively. The opening and closing mechanism drives the grab to close and grab materials. When the bucket mouth is closed, the lifting mechanism is immediately activat-ed to evenly load the four steel wire ropes for lifting work. When unloading, only the opening and closing mechanism is activated, and the hopper opening immediately opens and tilts the material. Except for the different lifting mechanisms, the rest of the structural pats of this crane are basically the same as the hook bridge crane.