Trundle capable of being oriented

The utility model relates to an orientable caster, which comprises a caster assembly, an orientable brake mechanism and an aligning mechanism, the orientable brake mechanism comprises a pedal and a support pillar, one end of the support pillar is provided with a limiting part, the other end of the support pillar is connected with the pedal, the support pillar axially translates along with the rotation of the pedal, the aligning mechanism comprises a connecting shaft and a support rod, and the connecting shaft is connected with the support rod. The connecting shaft is perpendicular to the supporting rod, the supporting rod is sleeved with a sliding block and an elastic piece, the two sides of the sliding block abut against the connecting shaft and the elastic piece respectively, the trundle assembly comprises a rotating disc, and a limiting groove matched with the limiting part is formed in the outer side of the rotating disc. A rotating hole matched with the connecting shaft is formed in the rotating disc, an