Roller base for travelling trunk pulling carrier

The utility model relates to a wheel base for traveling trunk pulling carriers, which comprises a pair of wheel bases; each wheel base is composed of a wheel base body, a compression spring, a short shaft rod, a latch buckle element and a wheel; the wheel base is provided with upright side part and bottom part frame plates which are integrated into forming and are fixedly arranged at the bottom part of the traveling trunk; one end of the short shaft rod is concavely provided with a first fixing slot, and the other end is sheathed in the inner part of a second fixing slot concavely arranged at the center of a latch buckle body of the latch buckle element; one end of the latch buckle element is formed into a simple rotary part, and the other end is formed into the simple latch buckle body; the wheel base is convenient in loading and unloading wheels of the pulling carrier and fittings on the wheel base, which saves production cost and to improves production efficiency.