Semi-gantry Crane has a special design structure to suit various crane work situations. It can be single girder and double girder,
the two ends connections are different, one side is connected and supported by the crane gantry leg travel on the ground mounted
rails, another side is connected and supported by an end carriage travel on the overhead track.
Compare to the standard gantry crane, it will save one side support gantry leg, not only reduce the cost, but also can expand
crane effective workspace in some limited workshops.
