Multi-point loading and side-pulling testing apparatus for static tests on blades of large wind turbines

The invention discloses a multi-point loading and side-pulling testing apparatus for static tests on blades of large wind turbines, which is characterized in that a to-be-tested blade is fixed by a permanent seat parallel to the ground, a plurality of side-pulling supports are arranged on one side of the blade and perpendicular to the ground, and the distribution number of the side-pulling supports is corresponding to the number of blade loading points; the testing apparatus is provided with at least a power plant, and the power plant loads static forces on sectionalization test parts of the blade by the plurality of side-pulling supports; the height of a fixed pulley on each side-pulling support can be adjusted with the height of the blade loading point, and the position of each side-pulling support can be flexibly moved according to different blade loading positions. The testing apparatus disclosed by the invention can adapt to tests on different-sized blades, and the blade loading points and the fixed pulleys are always in horizontal positions, therefore, a situation that forces transferred to the blade loading points through pulling a rope are always in the horizontal direction is ensured, and real and reasonable test data are obtained, thereby achieving a test effect on multi-point loading in static tests.