What are the different types of gantry cranes?

There are several types of gantry cranes, including:

1. Full gantry crane: This type of crane has a bridge that runs over two legs supported by a framework. It is mainly used in shipyards, warehouses, and other industrial facilities.

2. Portable gantry crane: These are smaller and lighter cranes that can be moved and assembled easily. They are often used in workshops and repair facilities.

3. Adjustable height gantry crane: These cranes can have an adjustable height, allowing them to adapt to different work environments. They are often used in construction sites and other places where the height of the crane needs to be constantly adjusted.

4. Semi-gantry crane: This type of crane has one end supported by a building or structure and the other end supported by a gantry leg. They are often used in outdoor areas where a full gantry crane would not be possible.

5. Rubber-tired gantry crane: This type of crane is equipped with wheels and is used in container terminals to load and unload shipping containers.