Now the high-speed rail bridge frame span of the beam
But it is very different from the general sense of the crane. The requirements of the harsh conditions, and the existence of the beam on the line, or called the longitudinal shift. Bridge machine is divided into the erection of highway bridges, conventional railway bridge, passenger dedicated railway bridge, etc..
Bridge crane is a crane, because its main function is to lift the beam, and then transported to the location and put down
The bridge erecting machine is a device for placing a prefabricated beam on a prefabricated pier
