Tilt rotation driving mechanism for tilt rotation nacelle of tilt rotor craft

Abstract

The invention discloses a tilt rotation driving mechanism for a tilt rotation nacelle of a tilt rotor craft, which comprises a tilt rotor box, a gear plate, a mounting frame, a power driving shaft and a power driving control motor. The tilt rotor box is cylindrical, with the gear plate mounted on the external end thereof and the internal end thereof rotatably inserted in the mounting frame, wherein the gear plate is fixedly connected to the nacelle box of the tilt rotation nacelle; the power driving shaft is penetrated through the tilt rotation nacelle; one end of the power driving shaft is connected to a power transmission shaft in the craft wing while the other end thereof is driven and connected to a rotor shaft through an arc bevel gear; a worm gear mechanism is mounted on the mounting frame; an output gear shaft of the worm gear mechanism is connected to the gear plate in order to drive the gear plate to rotate under the driving of the driving control motor; and a fastening element which is connected to a big beam in the craft wing is mounted on the mounting frame. The invention overcomes the shortcoming of the traditional tilt rotation driving mechanism, has compact structure, can transmit regularly and simply and is convenient to control the tilt rotation of the tilt rotation nacelle.

Description

technical field [0001] The present invention relates to tilt rotor aircraft. More specifically, the present invention relates to a rotor nacelle tilting drive system for a tiltrotor aircraft for switching between helicopter mode and aircraft mode. Background technique [0002] The tilt rotor aircraft is a new type of rotor aircraft with the advantages of vertical take-off and landing of helicopters and fast forward flight of aircraft. When the tilt rotor aircraft needs to take off and land vertically, the tilt rotor nacelle rotates around the tilt axis and stands up, the rotor axis is perpendicular to the wing chord line, and the tilt rotor works in helicopter mode; when the tilt rotor aircraft needs to take off in the air When flying at high speed, the tilt rotor nacelle rotates around the tilt axis to a horizontal position, the rotor axis is parallel to the wing chord line, and the tilt rotor works in the propeller aircraft mode. [0003] The working characteristics of t...

AI Technical Summary

Problems solved by technology

[0004] (1) The drive based on the linear motion mode, which uses the pushing action of the actuator to drive the rotor nacelle to rotate around the tilt axis; this kind of linear drive usually uses the hydraulic system to drive the ball screw to expand and contract to realize the pushing action of the drive (Refer to U.S. Patent No. 6,247,667B1). Although the driving force of the linear actuator is relatively large, due to the existence of the hydraulic system, the volume and weight of the linear actuator are often too large, and the actuator often needs to extend out of the wing skin. to the aerodynamic shape of the tiltrotor aircraft;

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