A self-locking mechanism for aircraft landing gear lowered position

Abstract

The invention discloses an aircraft landing gear drop-down position self-locking mechanism. The self-locking mechanism comprises a ball screw (1) which forms a ball screw pair and a ball nut (9), wherein the ball nut (9) is fixedly connected to a landing gear buffer strut (10); the lower end of the ball screw is installed in a thrust bearing (6), and the thrust bearing is assembled in a bearing seat (5) connected with a fuselage connecting piece (7); and the bottom of the bearing seat is fixedly provided with a stopping ring (4), the lower end of the ball screw penetrates through the stoppingring and a self-locking gasket (3) and then is installed on a locking nut (2), and the self-locking gasket is installed on the locking nut. The self-locking mechanism can automatically realize vertical bearing and automatic locking of the landing gear lower lock drop-down position, and has good practical value for a lifting landing gear which can save the landing gear space and reduce the landinggear weight.

Description

technical field [0001] The invention relates to an aircraft landing gear, in particular to an aircraft landing gear self-locking mechanism at a lowered position. Background technique [0002] The aircraft landing gear lowered position locking mechanism is mainly used to fix the landing gear strut in the lowered position to prevent the landing gear from being accidentally retracted during landing or when it is under ground load. [0003] With the rapid development of the aircraft industry, people have paid more and more attention to simplifying the retractable system of the landing gear and reducing the weight of the landing gear. At the same time, in order to ensure the safety of the aircraft during landing, ground taxiing, take-off and shutdown, higher requirements are placed on the load-carrying capacity and reliability of the locking mechanism of the lowered position of the landing gear of the aircraft. [0004] At present, the conventional load-bearing lower locks mainl...

AI Technical Summary

Problems solved by technology

[0004] At present, the conventional load-bearing lower locks mainly include deflection locks, latch locks and actuator built-in locks, etc., but these lock mechanisms need to cooperate with side struts, landing gear beams, etc. to realize the take-off, landing and taxiing of the landing gear, etc. load during the process, and its unlocking and locking generally require additional drive devices or mechanisms

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