Method for manufacturing wind turbine tower structure with embedded reinforcement elements
A system for manufacturing a structure includes a supporting frame assembly moveable in a vertical direction of the structure. Further, the system includes an additive printing assembly secured to the supporting frame assembly. The additive printing assembly includes at least one printer head configured to dispense a first cementitious material. The system also includes a reinforcement dispensing assembly supported by the supporting frame assembly. Thus, the reinforcement dispensing assembly is configured to automatically and continuously dispense a plurality of reinforcing members as the structure is printed and built up via the at least one printer head and as the supporting frame assembly moves in the vertical direction.
1. A system for manufacturing a structure, the system comprising:
a supporting frame assembly moveable in a vertical direction of the structure;
an additive printing assembly secured to the supporting frame assembly, the additive printing assembly comprising at least one printer head configured to dispense a first cementitious material; and,
a reinforcement dispensing assembly supported by the supporting frame assembly, the reinforcement dispensing assembly configured to automatically and continuously dispense a plurality of reinforcing members as the structure is printed and built up via the at least one printer head and as the supporting frame assembly moves in the vertical direction,
wherein the supporting frame assembly comprises at least one ring-shaped platform assembly supported by a plurality of rod members, and
wherein the at least one ring-shaped platform assembly comprises a platform supporting an outer ring support member and an inner ring support member arranged concentrically with each other with the plurality of rod members extending therebetween.
2. The system of claim 1 , wherein the at least one printer head of the additive printing assembly further comprises, at least, an outer printer head for printing an outer wall of the structure and an inner printer header for printing an inner wall of the structure.
3. The system of claim 2 , wherein the additive printing assembly further comprises an intermediate printer head secured between the outer and inner printer heads for filling an area between the outer and inner tower walls with a second cementitious material.
4. The system of claim 3 , wherein the second cementitious material is different than the first cementitious material.
5. The system of claim 4 , wherein the second cementitious material is a self-compacting cementitious material.
6. The system of claim 1 , wherein the outer and inner ring support members each comprise an adjustable diameter.
7. The system of claim 1 , further comprising a lifting jack arranged with each of the plurality of rod members and movable along each of the plurality of rod members so as to move the supporting frame assembly in the vertical direction by raising the outer and inner ring support members.
8. The system of claim 7 , wherein the lifting jacks are driven via at least one of hydraulics, pneumatics, or mechanics.
9. The system of claim 1 , wherein the reinforcement dispensing assembly further comprises a plurality of roller devices, the plurality of reinforcing members comprising reinforcing cables, the reinforcing cables being dispensed from the plurality of roller devices by automatically and continuously rolling the reinforcing cables therefrom under tension.
10. The system of claim 9 , wherein the plurality of roller devices are arranged atop at least one of the outer ring support member or the inner ring support member.
11. The system of claim 9 , wherein the reinforcement dispensing assembly further comprises a plurality of pulley blocks with one of the plurality of pulley blocks being arranged with each of the plurality of roller devices, the plurality of pulley blocks arranged atop the at least one ring-shaped platform assembly, the plurality of roller devices being arranged lower than the plurality of pulley blocks.
12. The system of claim 1 , wherein the reinforcement dispensing assembly further comprises a plurality of feeder devices arranged atop at least one of the outer ring support member or the inner ring support member, the plurality of reinforcing members comprising reinforcing bars, wherein the reinforcing bars are dispensed from the plurality of feeder devices by automatically and continuously pushing the reinforcing bars therefrom.