The utility model relates to a construction auxiliary assembly technical field in tunnel especially relates to a portal pipe canopy conduit jacking is driven in tunnel, including fixing device, strutting arrangement and hoisting device, strutting arrangement is provided with the fixed pulley including predetermined pulley and fastening at the facade inclined support surface of fixing device avris frame, the top of facade inclined support surface frame, hoisting device includes the hoist engine of steel wire lifting rope and the action of drive steel wire lifting rope, and the hoist engine fastens on fixing device, and the steel wire lifting rope passes fixed pulley and predetermined pulley according to the preface, and the hoist is installed to steel wire lifting rope end.