The portal crane includes four connecting rod and one arm frame two structure. The four link portal is mainly used for bulk material handling port operations, mainly for sling hook and grab, high work efficiency, multi-purpose portal crane can also configure the container spreader container loading and unloading, but the work efficiency is low; single boom portal is mainly used for shipyard shipbuilding operations, lifting capacity, working range and lifting height are larger but the work efficiency is low. The portal crane is mainly composed of steel structure (including door frame, rotary table, boom system, such as tower), hoisting mechanism, slewing mechanism, luffing mechanism, cart, electrical systems and accessories.
Track type container gantry crane
Tire type container crane
Track type container gantry crane 50t40mRMG
41t × 40m track type container gantry crane