Vertical test device for reliability test of aircraft landing gear door up lock

Abstract

The invention provides a vertical testing device for a reliability test of an aircraft landing gear door uplock. The vertical testing device is composed of a supporting mechanism, a simulated door structure and a driving device, wherein the door uplock to be tested, the simulated door structure and the driving device are all installed on the supporting mechanism, the supporting mechanism is connected with an external vibration table, the driving device drives the simulated door structure to move, and the simulated door structure comprises a lock ring, a lock ring supporting part, a simulated door frame and a belleville spring. The vertical testing device is small in size and low in weight, can be installed in an environment temperature test box and meet the weight requirement of the vibration table, can be matched with the vibration table to achieve vibration stress loading, can be matched with a hydraulic system to achieve work triggering of the door uplock to be tested, and can simulate aerodynamic force loading. The environment conditions and working conditions simulated by the device are pretty real, and the device has certain universality and can be used for the reliability test of door locks with similar principles. The vertical testing device is low in machining cost and low in testing cost.

Description

technical field [0001] The invention relates to the field of aircraft reliability tests, in particular to a vertical test device for the reliability test of an aircraft landing gear cabin door uplock. Background technique [0002] The aircraft landing gear system includes a complex system consisting of landing gear mechanism assembly, landing gear door and actuator, upper / lower cabin door locks, auxiliary sensors and hydraulic control system, which has the characteristics of large mass, complex principle and high requirements for use; Whether the system can work normally is an important condition related to whether the aircraft can complete the task as required and ensure safety, and is a key part to ensure the normal use of the aircraft. The aircraft landing gear door up lock (hereinafter referred to as the door up lock) is a key product that affects whether the door can work normally, and is a key product that affects the work of the landing gear system. The door uplock i...

AI Technical Summary

Problems solved by technology

[0004] The current problem is that the existing aircraft landing gear door uplock reliability test device cannot meet the test requirements for this type of product, that is, it usually does not have a driving component and cannot trigger the mechanical device of the door uplock under working conditions, that is, It cannot trigger the work of the upper lock of this kind of cabin door, thus fulfilling the relevant requirements for completing the reliability test

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