Concrete lining device

The utility model discloses a concrete lining device which comprises a lining machine, grooves are formed in the two sides and the top of the lining machine in a penetrating mode, a supporting plate is installed, the other lining machine drives the supporting plate to move, the supporting plate drives a large spring, a bent hook, a supporting rod and a rolling wheel to be inserted into the grooves together, and the large spring, the bent hook, the supporting rod and the rolling wheel are driven to rotate. The convex block extrudes the hook to enable the large spring to be stressed and shrunk, meanwhile, the rolling wheel is attached to the convex block to roll, so that the hook moves along the groove until the hook loses resistance of the convex block, the hook extrudes the rubber plug to enable the spring to be shrunk and stored energy to be inserted into the inner side of the lining machine, and meanwhile, the hook can be embedded into a crack between the groove and the convex block; and meanwhile, the rubb