Float, notably for an offshore wind turbine
Disclosed is a float, notably for an offshore wind turbine including at least four columns, including a central column and three exterior columns that are connected to the central column by branches forming pontoons. The columns have a fixing-collar forming unit for fixing the columns to corresponding assembly portions of the branch forming pontoon, and the float includes a unit for centering the columns in the assembled position on the corresponding assembly portions of the branch forming pontoon.
1. A float, comprising:
at least four columns, including a central column and three outer columns connected to the central column by branches forming pontoons,
each column among the central column and the three outer columns comprising fixing-collar forming means for fixing the column onto a corresponding assembly portion of a branch of said branches;
centering means of the central column and the three outer columns, for centering each column among the central column and the three outer columns in the assembly position on the corresponding assembly portion of the branch of said branches; and
guide means for guiding each column among the central column and the three outer columns in the assembly position on the corresponding assembly portion of the branch of said branches.
2. The float according to claim 1 , wherein, for each column among the central column and the three outer columns, the centering means comprise centering pins distributed on the branch of said branches and fixed to the branch, and configured to cooperate with corresponding holes in the fixing-collar forming means of the column for centering the column on the corresponding assembly portion of the branch during assembly of the column.
3. The float according to claim 2 , wherein each centering pin comprises first and second parts detachable from each other, the first part forming a body that is fixed on the branch, and the second part forming a removable head portion configured so as to be detachably affixed to the first part.
4. The float according to claim 3 , wherein the second part of each centering pin has a generally frustoconical shape.
5. The float according to claim 1 , wherein, for each column among the central column and the three outer columns, the guide means comprise peripheral guide tabs distributed on the branch of said branches, around the corresponding assembly portion of the branch and inclined outwards therefrom so as to guide the column in the assembly position on the corresponding assembly portion of the branch.
6. The float according to claim 1 , further comprising:
inclination adjustment means for adjusting each column among the central column and the three outer columns relative to the branches forming pontoons.
7. The float according to claim 6 , wherein the inclination adjustment means comprise at least one adjustment cylinder.
8. The float according to claim 6 ,
wherein the centering means comprise, for each column among the central column and the three outer columns, centering pins distributed on the branch of said branches and fixed to the branch, and configured to cooperate with corresponding holes in the fixing-collar forming means of the column for centering the column on the corresponding assembly portion of the branch during assembly of the column,
wherein each centering pin comprises first and second parts detachable from each other, the first part forming a body that is fixed on the branch, and the second part forming a removable head portion configured so as to be detachably affixed to the first part, and
wherein, for each column among the central column and the three outer columns, the inclination adjustment means are configured to be interposed between the first part of the centering pin and a corresponding bearing portion of the column.
9. The float according to claim 8 , wherein, for each column among the central column and the three outer columns, the corresponding bearing portion is provided in a cylinder stand of the column.
10. The float according to claim 1 , wherein the float is an offshore wind turbine float.