Patent ID: 11884520
Assignee: NATIONAL OILWELL VARCO, L.P.
Field: Handling (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 20:
21. A tower crane for assembling a wind turbine, comprising:
a boom assembly comprising a boom and a hoisting block coupled to the boom;
an extendable tower assembly comprising a plurality of tower sections; and
a transport assembly comprising a central support frame coupled to the tower assembly, a plurality of independently self-propelled transporters coupled to the central support frame and configured to transport the tower crane, wherein each of the plurality of transporters comprises a guide assembly that is pivotably coupled to and positioned at a front of a body of the transporter, and wherein the guide assembly rides on the terrain ahead of the body of the transporter and comprises an inclination sensor in signal communication with a control system of the transport assembly.