| 摘要 |
The invention relates to a sectional blade for a wind turbine, the blade comprising at least a first blade section and a second blade section extending in opposite directions from a blade joint, where each blade section comprises a spar section forming a structural member and extending in the longitudinal direction of the blade, and where the first and second blade sections are connected by fastening means restraining any movement of the first blade section relative to the second blade section length ways. The first and the second blade sections are structurally connected by a spar bridge protruding from one of the blade sections and terminating axially in an end portion, which is received in the spar section of the other blade section. The spar bridge and the spar section have interlocking shapes by which rotation of the spar bridge in the spar section is prevented thereby preventing rotation of one of the blade sections relative to the other. Further, the spar section of the other blade section comprises a receiving section extending from the blade joint and inwards into the spar section of that blade, which receiving section holds the spar bridge such that movement of the end portion of the spar bridge relative to the receiving section is enabled in the longitudinal direction. The invention further relates to a method of manufacturing a sectional blade as mentioned above. |
