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

A technology of aircraft landing gear and test equipment, which is applied in the direction of measuring equipment, testing of mechanical components, testing of machine/structural components, etc. It can solve the problems that the test requirements cannot meet the requirements, do not have driving components, and cannot be triggered. Lightweight, small additional resistance, and compact loading structure

CN103983443BActive Publication Date: 2016-07-06NORTHWESTERN POLYTECHNICAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2016-07-06

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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.
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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...

Examples

Embodiment Construction

[0027] The present invention will be described below in conjunction with specific embodiments:

[0028] The horizontal test device used for the reliability test of the upper lock of the aircraft landing gear door in this embodiment is composed of a connecting support structure, a simulated door structure, and a driving loading structure.

[0029] The upper lock of the cabin door to be tested, the simulated cabin door structure and the drive loading structure are all installed on the connecting support structure, and the connecting support structure is also the connection interface with the external vibration test bench. The installation method of the upper lock of the cabin door to be tested is consistent with the real situation. The simulated cabin door structure is used to simulate the movement trajectory of the cabin door lock ring so that the movement trajectory of the lock ring in the test device is consistent with the movement trajectory of the lock ring required by the test ...