# US 8,465,237 B2 · Arrangement and method for transporting a wind turbine rotor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,465,237 B2 - Document ID: US8465237B2 - Status: Granted - Kind: B2 - Application number: 13/307,348 - Filed: 2011-11-30 - Published: 2012-06-14 - Granted: 2013-06-18 - Earliest claimed: 2010-12-08 - Assignees: Siemens Aktiengesellschaft - Applicants: Henrik Fomsgaard Lynderup - Inventors: Henrik Fomsgaard Lynderup - Web page: https://patentgrep.com/patent/US8465237B2 ## CPC - B63B 35/003: {for transporting very large loads, e.g. offshore structure modules (construction methods for artificial islands mounted on piles E02B17/00; for transporting marine vessels B63B35/40; docks B63C1/00)} - F03D 13/40: Arrangements or methods specially adapted for transporting wind motor components - F05B 2230/6102: carried on a floating platform - F05B 2250/232: conical - F05B 2250/314: the axes being inclined in relation to each other - Y02E 10/72: Wind turbines with rotation axis in wind direction - Y02E 10/727: Offshore wind turbines - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - B63B: SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING (arrangements of vessel ventilation, heating, cooling, or air-conditioning B63J2/00; floating substructures as supports of dredgers or soil-shifting machines E02F9/06) - F03D: WIND MOTORS - F05B: INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract An arrangement for transporting a rotor of a wind turbine at sea is provided. The arrangement includes a vessel having a deck. Moreover, the arrangement includes at least one rotor including a hub and at least one blade affixed to the hub. The hub is positioned on the deck in such a way that the at least one blade is at least partially located above the sea surface and that the center axis of the hub is tilted in relation to the deck so as to increase the distance between the at least one blade and the sea surface. Furthermore, a method for transporting a wind turbine rotor at sea on a vessel having a deck is also provided. ## Claims ### Claim 1 An arrangement for transporting a rotor of a wind turbine at sea, comprising: a vessel including a deck; and a rotor including a hub and a blade affixed to the hub, wherein the hub is positioned on the deck in such a way that the blade is at least partially located above the sea surface and that a center axis of the hub is tilted in relation to the deck so as to increase the distance between the blade and the sea surface. ### Claim 2 (depends on 1) The arrangement according to claim 1, wherein the hub is positioned on the deck in such a way that the center axis of the hub is tilted substantially along a longitudinal direction of the vessel. ### Claim 3 (depends on 1) The arrangement according to claim 1, wherein the hub is positioned on the deck in such a way that the center axis of the hub is tilted substantially towards the center of the deck. ### Claim 4 (depends on 1) The arrangement according to claim 1, wherein a tilting angle between the center axis of the hub and the deck is in a range of 3 to 15 degrees. ### Claim 5 (depends on 1) The arrangement according to claim 1, wherein the blade includes a blade tip, a substantially concave face and a substantially convex face, and wherein the substantially convex face is directed downwards in relation to the deck and the substantially concave face is directed upwards in relation to the deck such that the blade is bended off the sea surface and the distance between the blade tip and the sea surface is further increased. ### Claim 6 (depends on 1) The arrangement according to claim 1, wherein a first rotor and a second rotor are arranged on the deck, wherein the first rotor comprises a first hub and the second rotor comprises a second hub, wherein at least one blade is affixed to each of the hubs; wherein the first hub and the second hub are positioned on the deck in such a way that the blades affixed to the respective hub are at least partially located above the sea surface, and wherein the first hub and the second hub are positioned on the deck in such a way that a first center axis of the first hub and a second center axis of the second hub are tilted in relation to the deck so as to increase the distance between the blades affixed to the respective hub and the sea surface. ### Claim 7 (depends on 6) The arrangement according to claim 6, wherein the second hub is located above the first hub in such a way that the second center axis of the second hub is tilted in relation to the deck in the same manner as the first center axis of the first hub. ### Claim 8 (depends on 6) The arrangement according to claim 6, wherein the second hub is located on the deck of the vessel adjacent to the first hub in such a way that the second center axis of the second hub is tilted in relation to the deck in the same manner as the first center axis of the first hub. ### Claim 9 (depends on 6) The arrangement according to claim 6, wherein the first rotor comprises a first blade and a second blade, and wherein the first blade is located at least partially above the sea surface, and wherein the second blade is located entirely above the deck. ### Claim 10 A method for transporting a rotor of a wind turbine at sea on a vessel having a deck, comprising: positioning a rotor with a hub and a blade on the deck in such a way that a center axis of the hub is tilted in relation to the deck so as to increase the distance between the blade and the sea surface. ### Claim 11 (depends on 10) The method according to claim 10, wherein the hub is positioned on the deck in such a way that the center axis of the hub is tilted substantially along a longitudinal direction of the vessel. ### Claim 12 (depends on 10) The method according to claim 10, wherein the hub is positioned on the deck in such a way that the center axis of the hub is tilted substantially towards the center of the deck. ### Claim 13 (depends on 10) The method according to claim 10, wherein a tilting angle between the center axis of the hub and the deck is in a range of 3 to 15 degrees. ### Claim 14 (depends on 10) The method according to claim 10, wherein the blade includes a blade tip, a substantially concave face and a substantially convex face, and wherein the substantially convex face is directed downwards in relation to the deck and the substantially concave face is directed upwards in relation to the deck such that the blade is bended off the sea surface and the distance between the blade tip and the sea surface is further increased. ### Claim 15 (depends on 10) The method according to claim 10, wherein a first rotor and a second rotor are arranged on the deck, wherein the first rotor comprises a first hub and the second rotor comprises a second hub, wherein at least one blade is affixed to each of the hubs, wherein the first hub and the second hub are positioned on the deck in such a way that the blades affixed to the respective hub are at least partially located above the sea surface, and wherein the first hub and the second hub are positioned on the deck in such a way that a first center axis of the first hub and a second center axis of the second hub are tilted in relation to the deck so as to increase the distance between the blades affixed to the respective hub and the sea surface. ### Claim 16 (depends on 15) The method according to claim 15, wherein the second hub is located above the first hub in such a way that the second center axis of the second hub is tilted in relation to the deck in the same manner as the first center axis of the first hub. ### Claim 17 (depends on 15) The method according to claim 15, wherein the second hub is located on the deck of the vessel adjacent to the first hub in such a way that the second center axis of the second hub is tilted in relation to the deck in the same manner as the first center axis of the first hub. ### Claim 18 (depends on 15) The method according to claim 15, wherein the first rotor comprises a first blade and a second blade, and wherein the first blade is located at least partially above the sea surface, and wherein the second blade is located entirely above the deck.