QD model overhead crane with hook is mainly composed of bridge, running gear of crane, trolley and electrical device, etc. it is divided into two  working classes: A5 A6 according to use grade and loade- up condition.

there are three kinds of method for entering the platform of cab: form the side  from the wnd and from the top .the figure is the side entrance; arrowhead A shows the end entrance is at the place there is no door.
safe silde wire or angle iron can be used for electric conduction of crane; it can be either  at the opposite side of cab ( same as the figure)or at the same side of the cab.
operation of the crane shall be finished in the cab completely

H0 is the increased height of huffer of the crane ,h0<250

QDoverhead crane with hook model:50/10 ton  75/20~125/32ton. 150/32~160/32ton.200/50~250/50ton 300/75~350/80ton 400/80~450/100ton 550/100 ton