Expandable mechanism suitable for separation of multiple small satellites in limited space

The invention discloses an expandable mechanism suitable for separating a plurality of small satellites in a limited space. The expandable mechanism comprises a main body part and a plurality of folding groups, the folding assemblies are provided with fixed plates and movable plates, the fixed plates of the folding assemblies are connected to the main body component, the movable plates of the folding assemblies are movably connected to the corresponding fixed plates, and satellites are installed on the movable plates. The folding assembly has an unfolded state and a folded state, in the unfolded state, the movable plate drives the satellite to turn over to be away from the main body component, and in the folded state, the movable plate is folded back to the main body component. The deployable mechanism is folded when the rocket flies normally, the occupied space of each satellite is compressed, the deployable mechanism is unfolded before the satellites are separated, and it is guaranteed that the separation e