초록

A crane system includes a structural truss positioned within a central opening defined by an inside surface of an annular tower, a crane mast connected to an outside surface of the annular tower, and a jib arm connected to the crane mast.

대표청구항 ▼

1. A method of erecting an annular tower, comprising: positioning a structural truss within a central opening of a first annular tower section at a first height, wherein the structural truss has multiple beams that form a lattice with multiple joints that are in contact with an inside surface of the

1. A method of erecting an annular tower, comprising: positioning a structural truss within a central opening of a first annular tower section at a first height, wherein the structural truss has multiple beams that form a lattice with multiple joints that are in contact with an inside surface of the first annular tower section;connecting a crane mast positioned on an outside of the first annular tower section to the structural truss through a lateral opening in the first annular tower section; andmoving the structural truss to a second height within the central opening. 2. The method of claim 1, wherein a jib arm is attached to the crane mast. 3. The method of claim 2, further comprising attaching a second annular tower section to a cable of the jib arm. 4. The method of claim 3, further comprising lifting the second annular tower section to a height above the first annular tower section. 5. The method of claim 4, further comprising positioning the second annular tower section onto the annular tower so that the second annular tower section becomes part of the annular tower. 6. The method of claim 5, further comprising disconnecting the structural truss from the crane mast. 7. The method of claim 6, further comprising raising the structural truss into the second annular tower section. 8. The method of claim 7, further comprising raising the crane mast to the second annular tower section. 9. The method of claim 8, further comprising connecting the structural truss to the crane mast through the lateral opening in the second annular tower section. 10. The method of claim 1, wherein the structural truss further comprises at least two joints in contact with an inside surface of the central opening. 11. The method of claim 10, wherein each of the at least two joints comprises a length that is greater than a cross sectional width of the annular tower. 12. The method of claim 1, wherein a length of the structural truss is over twenty feet long.