Three-degree-of-freedom motion platform

A three-degree-of-freedom motion platform belongs to the technical field of interactive control of the three-degree-of-freedom motion platform. The three-degree-of-freedom motion platform comprises a protection cover, a lower base, a motion platform and three groups of motion mechanisms. The three groups of the motion mechanisms are distributed between the lower base and the motion platform evenly. Each group of motion mechanism respectively comprises a set of folding assembly, a servo motor, a speed reducer, a crankshaft and a connecting rod. The folding assembly is composed of an upper folding piece and a lower folding piece, and the upper folding piece and the lower folding piece are connected together through a movable joint. The upper end of the upper folding piece is connected with the motion platform through a movable connecting piece, the lower end of the lower folding piece is connected with the lower base through a movable connecting piece, the servo motor is connected with the speed reducer, the speed reducer is arranged on a speed reducer installing board, and the speed reducer installing board connected with the lower folding piece is connected with the lower base through a movable connecting board. A four dimensional (4D) simulation motion platform which is not limited by conditions such as fields and climate and combines entertainment with games can be produced based on the three-degree-of-freedom motion platform.