Luggage trundle capable of resisting deformation

The utility model discloses an anti-deformation luggage caster relates to caster technical field, including fixed plate, rotatory seat, support pillar and side wheel, rotatory seat is fixed on the lower surface of fixed plate, the support pillar is fixed on the bottom of rotatory seat, the both sides of support pillar are provided with strip-shaped groove, the side wheel is fixed in the strip-shaped groove, the side wheel is fixed in the strip-shaped groove, and the side wheel is fixed in the strip-shaped groove. A sliding rod is vertically and fixedly arranged in the strip-shaped groove, a sliding block and a spring are arranged on the rod wall of the sliding rod, and the two ends of the spring are fixedly connected with the top of the sliding block and the top of the strip-shaped groove correspondingly; and movable joints are fixedly arranged on the sides, facing the outside, of the two sliding blocks correspondingly, rotating shafts are fixedly arranged on the movable joints, and the tail ends of the two r