Introduction： EDS electric hoist bridge double-beam crane consists of bridge of main beam and end beam, trolley with electric hoist, electric hoist and crane traveling mechanism. The trolley is also composed of trolley frame including cross frame and longitudinal beam frame, small wheel and driving mechanism. Its feature is that the cross frame in the trolley frame is arched, with a concave in the middle, and both ends of the cross frame are welded with the longitudinal beam frame, so that the height of the electric hoist coincides with the trolley frame, So as to reduce the height of the whole machine, it is especially suitable for places with limited height, even in conventional places, and the working space is larger than the existing technology.