Portable folding wagon

A portable folding wagon, comprising:

• a carrying plate assembly, wherein the carrying plate assembly comprises a carrying plate, a connecting rod fixed on a pressing plate, a plurality of casters rotatably mounting on the connecting rod, a turnover limiting member slidably mounted on the connecting rod and capable of limiting rotation of the casters on the connecting rod, and a first spring elastically acting on the turnover limiting member;
• the caster comprises a wheel frame rotatably mounted on the connecting rod, the turnover limiting member and the wheel frame are limited with cooperation of a concave-convex structure, the first spring elastically acts on the concave-convex structure between the turnover limiting member and the wheel frame, and the turnover limiting member can limit the wheel frame to be used perpendicular to the carrying plate or to be stored in close contact with the carrying plate;
• the carrying plate is provided with a lifting part, a grip is slidably mounted at the lifting part or on the carrying plate, a second spring with elastic action is arranged between the lifting part and the grip, a pull rod is connected between the grip and the turnover limiting member, the pull rod is rotatably connected to the grip and the turnover limiting member, and the caster comprises a torsion spring capable of acting the caster to be rotationally stored;
• and
• when the lifting part and the grip are kneaded, the grip can pull the turnover limiting member away from the wheel frame by the pull rod, and the torsion spring can act on the caster to rotate and attach to a lower portion of the carrying plate.