What is the difference between a port platform crane and a stationary crane?
This question is not accurate, I guess you are asking the door type crane, this one has the track and the stationary; If it's a door seat, that's a functional difference
Stage posture under the crane usually have a space, can have the vehicles through (job site), the machine can run along a fixed orbit, a cart runs, slewing, luffing three institutions. The fixed crane usually has no space under it, which is composed of solid platform column, which can not be moved, and the whole machine can only be turned into two institutions
The platform crane belongs to the portal crane, which belongs to the mobile
