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

Abstract

The invention discloses a horizontal testing device for a reliability test of an aircraft landing gear door uplock. The horizontal testing device is composed of a connecting and supporting structure, a simulated door structure and a driving and loading structure, wherein the door uplock to be tested, the simulated door structure and the driving and loading structure are all installed on the connecting and supporting structure, the simulated door structure comprises a lock ring, a lock ring support, a rotary cross beam and a bearing support, and the driving and loading structure comprises a composite rocker arm, a transmission connecting rod, a main bearing shaft, a hydraulic actuator cylinder, an actuator cylinder transmission connecting rod, a loading assembly and a loading transmission connecting rod. The horizontal testing device can be matched with a vibration table to achieve vibration stress loading, can be matched with a comprehensive environment testing box to achieve the change of working temperature, can be matched with a hydraulic system to achieve the work triggering of the door uplock to be tested, and can simulate the loading of aerodynamic loads through a loading structure. According to the horizontal testing device, the loading structure is compact, the degree of freedom of work is high, additional resistance is small, circular motion of the lock ring can be achieved, and load control is accurate.

Description

Technical field [0001] The invention relates to the field of aircraft reliability testing, in particular to a horizontal testing device used for the reliability testing of the upper lock of aircraft landing gear doors. Background technique [0002] The aircraft landing gear system includes a complex system composed of the landing gear mechanism assembly, landing gear doors and actuators, upper and lower cabin door locks, auxiliary sensors, and hydraulic control systems. It has the characteristics of high quality, complex principles, and high requirements for use; Whether the system can work normally is an important condition for the aircraft to complete its mission and ensure safety as required, and is a key part to ensure the normal use of the aircraft. The upper lock of the aircraft landing gear door (hereinafter referred to as the upper lock of the door) is a key product related to the normal operation of the door, and a key product that affects the operation of the landing ge...

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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