Undercarriage test load loading device

Abstract

The invention relates to an undercarriage test load loading device. A through hole for installing an FZ loading connector and an FX loading hole for installing an FX loading connector are formed in an upper part of a loading fake wheel; one end of an FZ loading lug is connected to the FZ loading connector, and the other end of the FZ loading lug is connected to one end of a hydraulic servo actuator cylinder; the other end of the hydraulic servo actuator cylinder is arranged on a vertical column; a shaft sleeve hole for arranging the loading fake wheel on a wheel shaft of an undercarriage and a PX loading hole for installing a PX loading lug are formed in a lower part of the loading fake wheel; a PY loading hole for installing a PY loading lug is formed in the bottom of the loading fake wheel; a chain is connected to the PY loading lug; and force sensors are arranged on the upper parts of the hydraulic servo actuator cylinder and the chain. The loading fake wheel replaces an airplane wheel so as to satisfy the loading demand of a test, a connection between the loading fake wheel and the undercarriage is consistent with a connection between a real airplane wheel and the undercarriage, the transmission path of the load is constant, the accuracy of a test result will not be affected, and the loading demands of different testes in different directions can be met.

Description

technical field [0001] The invention relates to the technical field of test load loading, in particular to a landing gear test load loading device. Background technique [0002] The landing gear is an important load-bearing part of the aircraft and also has control characteristics. It bears an extremely important mission during the take-off and landing process that seriously affects the safety of the aircraft. With the increasingly prominent role of aircraft landing gear in modern aircraft design, designers are faced with new challenges. They need to design the safest landing gear with the lightest weight and most compact structure. [0003] The static strength test and fatigue test of the landing gear are important links to verify the design of the landing gear. The purpose of the static test of the landing gear is to assess the static strength of the landing gear and its connecting structure. Fatigue performance, to expose its structural fatigue weak parts to determine th...

AI Technical Summary

Problems solved by technology

The load of the landing gear mainly comes from the action of the ground on the wheel, and in the static strength test and fatigue test of the landing gear, the wheel cannot be installed, because the wheel will rotate around the wheel axis, and the surface of the wheel is not conducive to the loading of the equipment. Installation; if the wheel is not installed and the load is directly applied to the wheel shaft, the load in some directions cannot be applied due to structural limitations; therefore, it is necessary to design a loading device to replace the wheel of the aircraft to apply loads in all directions, and at the same time, it must be guaranteed. The loading device has sufficient strength and meets the requirements that the connection mode between the loading device and the axle is consistent with the actual connection form

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