Locking deflection detection device and detection method of a foldable strut

Abstract

The invention discloses a foldable brace rod locking deflection detection device and detection method. The detection method comprises the following steps: S1, an observing detection window is processed on a side wall of an upper brace rod, and an observing detection window is processed on a side wall of a lower brace rod; S2, gap values, corresponding to deflection values of the brace rod, of a gap between a lock pin and an inner wall of a lock hole of the lower brace rod are obtained, and a maximum deflection value of the brace rod corresponds to a maximum gap value while a minimum deflection value of the brace rod corresponds to a maximum gap value; S3, a maximum deflection detection sheet of corresponding thickness is processed based on the maximum gap value, and a minimum deflection detection sheet of corresponding thickness is processed based on the minimum gap value; S4, in deflection detection processes, the maximum deflection detection sheet and the minimum deflection detection sheet respectively run through the observing detection window of the upper brace rod and the observing detection window of the lower brace rod, and then the maximum deflection detection sheet and the minimum deflection detection sheet are plugged in a space between the lock pin and the inner wall of the lock hole, and therefore whether design requirements are met by brace rod mechanism locking deflection can be quickly detected.

Description

technical field [0001] The invention relates to a locking deflection detection device and a detection method of a foldable strut, belonging to the field of mechanical design, and is especially suitable for detecting the locking deflection of an aircraft landing gear strut. Background technique [0002] The function of the lower position lock of the aircraft landing gear is to fix the landing gear in the lowered position. At present, the common lower position locks of aircraft landing gear generally use foldable strut locks. The foldable strut locks are composed of upper and lower struts, upper and lower locking struts, and upper locking springs. When the landing gear is lowered, the collapsible strut is locked in the lowered position by the locking strut mechanism with the help of the locking spring. The traditional strut lock of this type of landing gear has a complex structure and a large number of parts, which increases the weight of the landing gear structure and requir...

AI Technical Summary

Problems solved by technology

[0004] However, it is still very difficult to detect the locking deflection of the strut with this kind of foldable strut lock mechanism, and the measurement and adjustment of the locking deflection must use a measuring tool, which has a complex and bulky structure and is time-consuming and laborious to measure.

Taking the UAV landing gear strut as an example, when specifically measuring the locking deflection, the UAV landing gear strut is generally measured with a three-coordinate measuring machine, and the landing gear strut is installed on the measuring tool during measurement (measurement The tooling needs to be specially designed), and the deflection is calculated from the coordinate value measured by the three-coordinate measuring machine. In the actual assembly, the locking deflection is adjusted by filing and repairing the stop table. During the adjustment process, it is necessary to repeatedly measure whether the deflection meets the design requirements. Frequent use of three Coordinate measuring machine, process handover takes a long time, which greatly affects the progress of production assembly

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