The invention discloses a two-dimensional
nozzle throat area control mechanism which comprises a driving mechanism and a
rocker arm connecting rod mechanism. The two-dimensional
nozzle throat area control mechanism is characterized in that the driving mechanism comprises an installation base and an
actuator cylinder and the installation base is fixed to a two-dimensional
nozzle cylinder body; one end of the
actuator cylinder is hinged to the installation base and the other end of the
actuator cylinder is hinged to a driving
rocker arm; the
rocker arm connecting rod mechanism comprises a first support, a first driven rocker arm, the driving rocker arm, a second driven rocker arm, a second support and a connecting rod; one
cantilever end of the driving rocker arm is hinged to the actuator cylinder and the other
cantilever end of the driving rocker arm is hinged to the connecting rod; one end of the connecting rod is hinged to the first driven rocker arm, the second driven rocker arm and the driving rocker arm and the other end of the connecting rod is hinged to a two-dimensional nozzle restraining adjusting sheet. The two-dimensional
nozzle throat area control mechanism has the advantages of being simple and compact in structure, small in number of movement connecting pieces, wide in adjusting range and capable of enabling the control load to be dispersed to multiple points, effectively achieving control over the two-dimensional
nozzle throat area, and meanwhile reducing the concentration degree of the load.