Pneumatic probe three-dimensional motion mechanism for testing axial flow gas compressor

The invention relates to a pneumatic probe three-dimensional motion mechanism for testing an axial flow compressor, and belongs to the technical field of wind tunnel tests. The problem of pneumatic parameter measurement in a large angle range is solved. Comprising a gear ring, a gear, a blade grid, a motor, a probe and a bearing, the motor is fixed to the outer wall of the blade grid, the gear is arranged at the output end of the motor, the gear ring is connected with the outer wall of the blade grid through the bearing, the gear is meshed with the gear ring, the gear ring is connected with the probe, and the probe extends into a flow channel of the blade grid. Therefore, on the basis that stable operation of the pneumatic probe is guaranteed, the angle of the pneumatic probe in the circumferential direction can be adjusted and controlled in a larger range, measurement of pneumatic parameters in a large-angle range is met, and therefore the accuracy and precision of a test are improved. 本发明涉及一种轴流压气机测试用气动探针三维运