Patent ID: 8092120
Filing Date: 2012-01-10
Classification: B23K,E02B,Y10T

Abstract:
1. Method for assembling a rack portion ( 1 , 2 ) of a self-raising oil rig, which rack portion ( 1 , 2 ) is constituted by at least one rectangular plate ( 3 , 3 ′) which comprises teeth ( 41 , 51 ) at the longitudinal lateral faces ( 4 , 5 ) thereof and at least one reinforcement ( 8 , 8 ′, 9 , 9 ′, 10 , 10 ′) in the form of a half-shell which is welded to a main face ( 6 , 7 ) of the at least one rectangular plate ( 3 , 3 ′), along the longitudinal edges ( 11 , 12 ) of the at least one reinforcement ( 8 , 8 ′, 9 , 9 ′, 10 , 10 ′), characterized in that: an internal chamfer ( the at least one reinforcement ( at least one welding pass is carried out at the internal portion of each of the longitudinal edges ( and the chamfers are filled at the external portion of each of the longitudinal edges (