Interior circle grinds transmission shaft propulsion system

The utility model relates to an interior round mill equipment field specifically is an interior circle grinds transmission shaft propulsion system, has transmission shaft and two parallel arrangement's guide rail, has arranged the chain track between two parallel arrangement's guide rail side by side, and chain track upper berth is equipped with the tow chain, impels the direction to lay bistrique dolly, a plurality of centre gripping dolly and fixed cohesion device in proper order in two guide rail's top along the transmission shaft, and wherein the bistrique dolly is connected with tow chain traction drive on the chain track, the one end of driving snake is installed on the bistrique dolly in the transmission shaft, and on the circle ground the bistrique including the installation of the other end of driving snake, the sleeve pipe was held tightly respectively on centre gripping dolly and fixed cohesion device in the transmission shaft, the utility model discloses degree of automation is high, has improved