Abstract: The invention relates to a maintenance platform (1, 10) for an oil rig equipped with a work platform and at least three frame legs (2) b, particularly a jackup oil rig, wherein at least one corner module (6) having at least one platform can be moved along at least one frame leg (2) of the oil rig, wherein the at least one corner module (6) is equipped with at least one climbing unit (110), which positively interacts with at least one gearing system (4) that is arranged on the frame leg (2) in order to bring about an up or down movement of the at least one corner module (6) along the frame leg (2).