Regulation device used for wide-speed-domain and variable-structure exhaust nozzle

The invention discloses a regulation device used for a wide-speed-domain and variable-structure exhaust nozzle. Two same deflection structures are adopted and symmetrically installed on the upper portion of an exhaust nozzle bottom plate of an engine. The head portions of telescopic hydraulic cylinders are fixed to the portions, on the upper portion of the exhaust nozzle, of machine body side plates. Piston rods of the hydraulic cylinders are connected with one ends of long cranks, and the other ends of the long cranks and one ends of short cranks are connected to hinge shafts of the machine body side plates. The other ends of the short cranks are connected with one ends of deformation connection rods, and the other ends of the deformation connection rods are connected with the upper ends of deformation trusses. The lower ends of the deformation trusses are connected to side plates of the exhaust nozzle bottom plate of an aircraft. Sliding constraint is formed through the piston rods and the telescopic hydrau