Internal and external gimbal rigid connection mechanism of airborne photoelectric sight-stabilizing system

The invention belongs to the technical field of photoelectric systems, and discloses an internal and external gimbal rigid connection mechanism of an airborne photoelectric sight-stabilizing system, which is different from a connection mode of an internal gimbal and an external gimbal of a traditional double-square-shaped two-axis four-frame photoelectric sight-stabilizing system. Compact volume compression and weight reduction of pitch shaft systems between the internal gimbal and the external gimbal are implemented through a nested design of an internal pitch shaft system and an external pitch shaft system, and a shock absorber is moved to the joint of the external gimbal and an aerial carrier, so that integral vibration isolation of the gimbal structure is realized. Compared with a traditional double-square-shaped two-axis four-frame gimbal with a built-in shock absorber, the internal and external gimbal rigid connection mechanism has the advantages that the occupied volume of the internal pitch shaft syst