Loading simulation device for test bed of wind turbine

The invention discloses a loading simulation device for a test bed of a wind turbine. A driving shaft is connected with a flange and a mainshaft flange of the wind turbine by a single-flange flexible shaft coupler, a torque sensor, a flange and a loading shaft; two ends of the loading shaft are supported in the bearing seat respectively; one end of each of four vertical dual-action oil cylinders is connected with a base; the other end of each of the four vertical dual-action oil cylinders is symmetrically connected at two sides of a loading bearing seat respectively; one end of each of two axial dual-action oil cylinders is connected with the base respectively; the other end of each of the two axial dual-action oil cylinders is connected with the loading bearing seat close to the mainshaft flange end of the wind turbine mainshaft; one end of each of two connecting rods is connected on the base; and the other end of each of the two connecting rods is connected with the lower part of each of the two loading bearing seats. The loading simulation device can be used for simulating various loads under practical running conditions of the wind turbine; the oil cylinder in only one direction is arranged in radial plane; the vertical force is converted into horizontal force by the connecting rods, thus realizing the loading of any radial forces; the loading simulation device has a simple and compact structure, has the advantages of reducing the arrangement space and cost, and can be controlled conveniently.