Double-rocker transmission mechanism applicable to movable control surface of aerial vehicle

Abstract

The invention relates to a double-rocker transmission mechanism applicable to a movable control surface of an aerial vehicle. A first hinged joint pair is formed between a rocker and a connecting bar, a second hinged joint pair is formed between the connecting bar and an auxiliary rocker, a third hinged joint pair is formed between the auxiliary rocker and a linear servo actuator, a fourth hinged joint pair is formed between the linear servo actuator and a first base, and a fifth hinged joint pair is formed between the auxiliary rocker and a second base; in each hinged joint pair, the axial movement of a hinge bearing is prevented by the way that a bush 12 and a sleeve 13 arranged on corresponding connecting lugs are in abutted connection with two sides of an inner ring of a hinge bearing 9 on a connector between two connecting lugs. The double-rocker transmission mechanism applicable to a movable control surface of an aerial vehicle provided by the invention can avoid exposure of a driving part of the mechanism to external high-temperature environments, so that the movement reliability of the mechanism is improved.

Description

technical field [0001] The invention relates to a double rocker arm transmission mechanism suitable for a movable rudder surface of an aircraft, belonging to the field of mechanism device design. Background technique [0002] In order to control the flight attitude in real time, multiple active rudder surfaces are generally set on the aircraft. The transmission mechanism is an important device that transmits the active force of the servo actuator to manipulate the movable rudder surface for deflection. [0003] At present, the drive of the movable rudder surface mostly adopts the form of motor direct drive or single rocker mechanism drive. The motor direct drive mode is that the motor rotor is directly connected to the rudder shaft, and the rudder surface is driven to deflect by the rotation of the motor; the single rocker arm mechanism is driven by a linear servo actuator to push the rocker arm fixed on the rudder shaft to deflect, driving The rudder deflects. The above-...

AI Technical Summary

Problems solved by technology

Since the rudder shaft is placed outside the cabin, on the one hand, there is no layout space for the direct drive of the motor, and on the other hand, the motor is exposed to the harsh high and low temperature environment outside the cabin, which seriously affects the performance of the motor and increases the risk of damage to the drive device

The drive form of the single rocker mechanism will also cause the actuating rod of the linear servo actuator to be exposed to the harsh high and low temperature environment outside the cabin, increasing the risk of damage to the servo actuator and reducing reliability

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