Bag with caster wheels

A luggage, capable of (1) with box bag main body (3) stand-alone and movably connected with the universal casters of four corners of. The universal casters (1) with a rolling wheels (6); Is rotatably connected with the rolling wheels (6) yokes (7); Yokes (7) is radial plane of the outer ring (8B) is (8); Connected with the radial bearing (8) inner ring (8A) is a rotating shaft (9); With fixing the rotating shaft (9) upper end fixing part (10). A rotary shaft (9), is a rotating shaft of the deviation rotary centre shaft (m) are (11), it bracket (7) is capable of swinging. Yokes (7) and fixing part (10) which are closed and deformed preventing the notch (15), the tapping connector the working is used for rotating shaft (9), yokes (7) and fixing part (10) can prevent the notch (15) are to extrude to support and.