Electric cylinder three-degree-of-freedom motion platform capable of preventing radial force

The utility model relates to the technical field of three-degree-of-freedom motion platforms, and discloses a radial force prevention electric cylinder three-degree-of-freedom motion platform which comprises a lower platform body and an upper platform body, and a free motion assembly used for conducting conventional three-degree-of-freedom motion is installed between the opposite sides of the lower platform body and the upper platform body. An auxiliary assembly used for achieving an auxiliary supporting effect is installed between the opposite sides of the lower platform body and the upper platform body, and the free movement assembly comprises two installation grooves formed in the opposite sides of the lower platform body and the upper platform body correspondingly. And three hooke hinge main bodies are fixedly mounted on the sides, opposite to each other, of the two mounting grooves. According to the electric cylinder three-degree-of-freedom motion platform capable of preventing the radial force, the radi