Roadbed reinforcing device

The utility model relates to the field of roadbeds, and provides a roadbed reinforcing device which comprises a bottom plate. Each reinforcing assembly comprises a reinforcing plate, a first guide plate and a second guide plate, the first side of the reinforcing plate is hinged to the bottom plate, the first guide plate is transversely arranged on the upper portion of the inner side face of the reinforcing plate, a first guide groove is formed in the first guide plate, and the second guide plate is transversely arranged on the lower portion of the inner side face of the reinforcing plate; a second guide groove is formed in the second guide plate; the two sides of the connecting plate are in sliding connection with the groove walls of the first guide grooves in the two first guide plates correspondingly; the two sides of the supporting plate are in sliding connection with the groove walls of the second guide grooves in the two second guide plates correspondingly; the two first locking pieces are used for preve