Flexible support type circulating steel belt for underground temporary support of coal mine

The invention provides a flexible support type circulating steel belt for underground coal mine temporary support of a coal mine. The flexible support type circulating steel belt is of a three-sectionstructure and comprises a left side auxiliary steel belt body, a middle main steel belt body and a right side auxiliary steel belt body; the left and right side auxiliary steel belt bodies are symmetrically distributed on two sides of the middle main steel belt body, and are hinged with the middle main steel belt body through hinge lug structures; the left side auxiliary steel belt body, the middle main steel belt body and the right side auxiliary steel belt body are the same in structure and each comprise a supporting bottom plate, a supporting front vertical plate, a supporting rear vertical plate, a flexible rubber top plate and a plurality of elastic corrugated supporting pipes; the front supporting vertical plates are vertically and fixedly arranged on the upper surfaces of the frontedges of the supporting b