Patent ID: 8585324

Claim:
A maintenance platform for an oil rig, the oil rig being equipped with at least one work platform and at least three frame legs, wherein at least one corner module having at least one platform can be moved along at least one frame leg of the oil rig, wherein the at least one corner module is provided with at least one climbing unit which interacts positively with at least one gearing system that is arranged on the at least one frame leg, wherein the at least one climbing unit consists of at least two engagement elements arranged on a rotatable plate, a longitudinal axis of the at least two engagement elements being perpendicular to a plane of said rotatable plate, wherein a first engagement element is engageable in a first tooth spacing of the gearing system of the at least one frame leg and upon rotating of the climbing element, a second engagement element is engageable in a second tooth spacing adjacent to the first tooth spacing, while the first engagement element can be moved out from the first tooth spacing.