FIELD: hydraulic power engineering. SUBSTANCE: device has a stationary support with vertical posts, a horizontal support with an unbalance and a floating platform with an inertial dynamometer located in between for vertical reciprocating motion. The unbalance is mounted on a horizontal power take-off shaft for rotation, and the horizontal support is kinematically connected to the floating platform and the stationary support. The unbalance is preliminary started into rotation up to the speed higher than the frequency of the acting wave. When the unbalance is below the axis of rotation and the wave rises the support is fixed with the platform thrusts, when the wave lowers - with stationary thrusts. When the unbalance is above the axis of rotation reversed fixing of the support with the thrusts is provided. The support is fixed by a hydraulic circuit which has two hydraulic cylinders and two two-position spool cocks. EFFECT: improved structure and efficiency. 2 cl, 6 dwg
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