Plane main undercarriage space retraction/extension mechanism and retraction/extension method

Abstract

The invention discloses a plane main undercarriage space retraction / extension mechanism and a plane main undercarriage space retraction / extension method and belongs to the design field of plane main undercarriages. In order to solve the problem that a traditional undercarriage is required to be turned, and a undercarriage cabin door retraction / extension mechanism and a control system are complex, the plane main undercarriage space retraction / extension mechanism consists of a five-pole and five-secondary space retraction / extension mechanism and a plane four-connecting rod driving mechanism, wherein the five-pole and five-secondary space retraction / extension mechanism consists of a cross beam, a pivoting shaft, an outer cylinder, a rocker and a rotary sleeve; and the combined plane four-connecting rod driving mechanism consists of connecting rod components, a lever, a bracket and a driving component retraction / extension acting cylinder. The undercarriage space retraction / extension is realized by using a universal hinge, and kinematic pairs, such as a rotation pair and the like, so the design of the undercarriage cabin door and a retraction / extension control system are simplified.

Description

technical field

[0001] The invention relates to the field of aircraft landing gear design, in particular to an aircraft main landing gear space retractable mechanism and a retractable method. Background technique

[0002] At present, for high-wing aircraft with special storage requirements for the main landing gear, the traditional main landing gear retraction mechanism is generally a plane flipping and retracting around the fixed axis of the outer cylinder. figure 1 and figure 2 As shown, the mechanism drives the outer cylinder around the fixed axis through the retracting actuator to realize retracting and retracting. During the retracting and retracting process, the buffer pillar and the machine wheel turn over. The landing gear door consists of a middle door and an aft door, which are driven separately.

[0003] The traditional retractable mechanism of this type of main landing gear, due to the overturning of the landing gear during retraction, makes it impossible for ...

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