Three-point surrounding type main reflector supporting device

The invention discloses a three-point surrounding type main reflector supporting device, and belongs to the technical field of main reflector supporting devices, the three-point surrounding type main reflector supporting device comprises a supporting frame and at least three flexible structures, and a lens is installed in the supporting frame; each flexible structure comprises a flexible fixing column, the flexible fixing column of each flexible structure penetrates through the corresponding positioning hole and is fixedly mounted on the supporting frame, and the end parts of all the flexible fixing columns abut against the peripheral surface of the lens so as to fix the lens in the concave cavity and enable the lens to be separated from the peripheral wall of the concave cavity; the flexible fixing column is provided with a plurality of first groove sets, the first groove sets are distributed at intervals in the axial direction of the flexible fixing column, each first groove set comprises two symmetrically-