# US 2021/0277873 A1 · Wind turbine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0277873 A1 - Document ID: US20210277873A1 - Status: Published application - Kind: A1 - Application number: 17/189,602 - Filed: 2021-03-02 - Published: 2021-09-09 - Earliest claimed: 2020-03-09 - Assignees: Siemens Gamesa Renewable Energy A/S - Applicants: Siemens Gamesa Renewable Energy A/S - Inventors: Amandeep Gagein; Pankaj Narang; Frederik Sig Pedersen; Anders Nygaard Rasmussen; Vipin Sendwal - Web page: https://patentgrep.com/patent/US20210277873A1 ## CPC - F03D 13/20: Arrangements for mounting or supporting wind motors; Masts or towers for wind motors - F03D 13/22: {Foundations specially adapted for wind motors} - F03D 13/201: {Towers} - F03D 13/25: specially adapted for offshore installation - F03D 80/50: Maintenance or repair - F03D 80/88: {of mechanical components} - F05B 2230/60: Assembly methods - Y02E 10/72: Wind turbines with rotation axis in wind direction - Y02E 10/727: Offshore wind turbines - Y02E 10/728: Onshore wind turbines - 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 ## Abstract Provided is a wind turbine, including a tower, a foundation, a transition piece, which is arranged between the tower and the foundation and which connects the tower to the foundation, a platform, which is arranged inside the transition piece, a service lift, which is lowered to the platform, and a permanent working platform which is arranged below the platform and in a distance thereof. Due to the permanent working platform, the service lift is easily accessible from below. The labor- and cost-intensive installation of a temporary scaffold below the platform is expendable. Advantageously, the working platform can also be used for array cable installation. ## Claims ### Claim 1 A wind turbine, comprising a tower, a foundation, a transition piece, which is arranged between the tower and the foundation and which connects the tower to the foundation, a platform, which is arranged inside the transition piece, a service lift, which is lowered to the platform, and a permanent working platform which is arranged below the platform and in a distance thereof. ### Claim 2 (depends on 1) The wind turbine according to claim 1, wherein the distance is one of between 2 m and 3 m and is 2.5 m. ### Claim 3 (depends on 1) The wind turbine according to claim 1, further comprising a plurality of support beams which run along a longitudinal direction of the tower, wherein the platform and the working platform are both attached to the support beams. ### Claim 4 (depends on 3) The wind turbine according to claim 3, wherein the support beams are connected to a flange of the transition piece. ### Claim 5 (depends on 3) The wind turbine according to claim 3, wherein the platform is supported by a first support structure, wherein the working platform is supported by a second support structure, and wherein the first support structure and the second support structure are both connected to the support beams. ### Claim 6 (depends on 3) The wind turbine according to claim 3, further comprising a platform arrangement which is suspended in the transition piece, wherein the platform arrangement comprises the platform, the working platform and the support beams. ### Claim 7 (depends on 1) The wind turbine according to claim 1, wherein the platform and the working platform are attached to a wall of the transition piece. ### Claim 8 (depends on 1) The wind turbine according to claim 1, further comprising a switch gear which is arranged on the platform. ### Claim 9 (depends on 8) The wind turbine according to claim 8, wherein the working platform has an elevated working section which is arranged below the switch gear. ### Claim 10 (depends on 9) The wind turbine according to claim 9, wherein the working section is one of elevated to 100 mm to 500 mm and to 300 mm, above the working platform. ### Claim 11 (depends on 1) The wind turbine according to claim 1, wherein the platform comprises a centrally arranged hatch which is opened and closed. ### Claim 12 (depends on 1) The wind turbine according to claim 1, wherein the working platform comprises a service space for mounting and/or maintaining the service lift. ### Claim 13 (depends on 1) The wind turbine according to claim 1, wherein the working platform comprises openings for pulling in array cables. ### Claim 14 (depends on 1) The wind turbine according to claim 1, wherein the working platform has a circular shape. ### Claim 15 (depends on 1) The wind turbine according to claim 1, wherein the working platform has a semi-circular shape.