How many driving wheels does the field bridge cart mechanism have?

Commonly used are eight rounds, six rounds, four rounds and two rounds.

The universal cart mechanism has basic cart modules, including eight wheels, six wheels, four wheels and two wheels. Other 12 rounds, 16 rounds, and even more are composed of these four basic modules. The cart mechanism is an essential walking mechanism for large port crane products (portal cranes, yard cranes, shore cranes and other gantry cranes). The load of the whole product is finally transferred to the cart mechanism, so the strength, stiffness and stability of the cart mechanism deserve attention.

The yard bridge is the common name of the port industry, and the exact name is the tire container gantry crane.