The connecting plate and the connecting groove are connected by bolts, and the side of the connecting groove far from the connecting plate is welded with the side plate of the container.

In order to solve the shortcomings of the prior art, the utility model aims to provide an anti-expansion carriage structure of a truck.

Through the cooperation of bolt seat, bolt, pin shaft vertical plate connecting assembly, pin shaft sleeve connecting assembly and other structures, the extrusion force on the side rail plate is dispersed and transmitted to the frame, and the telescopic resistance of the rail plate is enhanced.