Adjustable pressure distortion simulator and transmission device thereof

Abstract

The invention discloses an adjustable pressure distortion simulator and a transmission device of the adjustable pressure distortion simulator. The transmission device is used for moving distortion simulation inserting plate assemblies and comprises a stepping motor, a first bevel gear, a second bevel gear, a worm assembly, a lead screw, a lead screw nut and a guiding rod, the first bevel gear is driven by the stepping motor, the second bevel gear is matched with the first bevel gear, the worm assembly and the second bevel gear are connected and synchronously move, the lead screw is transmitted by the worm assembly through a worm wheel, the lead screw nut is matched to the lead screw, the guiding rod is parallel to the lead screw, the guiding rod is connected with the distortion simulation inserting plate assemblies through a linear bearing movably arranged on the guiding rod in a sleeved mode, and the lead screw nut drives the linear bearing and the distortion simulation inserting plate assemblies to move up and down when the lead screw rotates. The transmission device is reliable in structure, small in space size, high in displacement accuracy and high in use reliability.

Description

technical field [0001] The invention relates to the field of turbofan engine stability tests, in particular to a transmission device of an adjustable pressure distortion simulator and an adjustable pressure distortion simulator provided therewith. Background technique [0002] The transmission device of the adjustable pressure distortion simulator is a key device in the stability evaluation test of the turbofan engine. Its principle is to cover the local area in the airflow channel by moving the analog board, causing different degrees of disturbance to the airflow flowing through the channel, thereby generating a distorted flow field at the inlet of the downstream engine to meet different application requirements. [0003] How to drive the movement of the simulation plate in the flow channel is the key problem of the adjustable pressure distortion simulator. At present, the transmission devices of domestic adjustable distortion simulators mainly include hydraulic transmissi...

AI Technical Summary

Problems solved by technology

[0005] 1. The hydraulic control system is complicated, the construction cost is high, and the use and maintenance cost is high;

[0006] 2. The hydraulic system needs a comprehensive system inspection for each test, and the test preparation time is long;

[0007] 3. Low precision of transmission displacement

[0009] 1. The electric push rod transmission box is large in size and low in space utilization, which limits the use of the distortion simulator mold;

[0010] 2. It is difficult to guarantee the axial direction and positioning of the simulation board in space, and the verticality of the simulation board inside the flow channel cannot be guaranteed

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