1. The appearance is different
The overhead crane is shaped like a moving bridge, and the gantry crane is shaped like a movable door frame.

2. The running trajectory is different
Overhead crane is a kind of lifting equipment that is horizontally installed on the fixed span column track of the building, which is used in workshops, warehouses, etc., for indoor and outdoor loading and unloading and lifting handling.
Gantry crane is a deformed overhead crane, also known as gantry crane. The main beam has two tall legs at each end and runs along the track on the ground.

3. Different application scenarios
The bridge crane bridge runs longitudinally along the tracks laid on the viaducts on both sides, which can make full use of the space under the bridge to lift materials without being hindered by ground equipment. An overhead crane is a type of lifting machinery with a wide range of uses and a large quantity, which is more common in workshops, warehouses and other rooms.
Gantry cranes have the characteristics of high on-site utilization, large operating range, wide adaptability and strong versatility, and are widely used in port freight yards.

In conclusion, the difference between an overhead crane and a gantry crane is that the gantry crane has its own legs, and the wheels are on the ground (the track is placed on the ground); The overhead crane is located in mid-air, the wheels are located on the beams of the pillars (the rails are laid on the beams), and the beams are located on the brackets (horns) that protrude from the pillars.