Three-dimensional force measurement platform capable of laterally sliding

Abstract

The invention discloses a three-dimensional force measurement platform capable of laterally sliding. The three-dimensional force measurement platform is characterized in that an airplane wheel touch side sliding mechanism is arranged on the three-dimensional force measurement platform, a first X-direction force sensor assembly, a second X-direction force sensor assembly, a first Y-direction forcesensor assembly, a second Y-direction force sensor assembly, a first Z-direction force sensor assembly, a second Z-direction force sensor assembly and a third Z-direction force sensor assembly are arranged on the three-dimensional force measurement platform, acting force lines of the first X-direction force sensor assembly and the second Z-direction force sensor assembly intersect at a point, acting force lines of the first Y-direction force sensor assembly and the first Z-direction force sensor assembly intersect at a point, acting force lines of the second X-direction force sensor assembly,the second Y-direction force sensor assembly and the third Z-direction force sensor assembly intersect at a point, a sliding plat is arranged on the airplane wheel touch side sliding mechanism by a planer needle bearing, a tension spring is arranged at a front end of the sliding plate, and Y-direction freedom degree of the sliding plate is open. The coupling error during real-time measurement andanalysis on a three-dimensional dynamic load under the same time domain is small, the measurement accuracy is high, and the three-dimensional force measurement platform can be used for various types of airplanes and unmanned aerial machines.

Description

technical field [0001] The invention relates to a sliding force-measuring platform for drop impact load test, in particular to a laterally slidable three-way force-measuring platform. Background technique [0002] Four or six piezoresistive three-way force sensors are commonly used in the three-way ground load measurement in landing gear drop tests of large and medium-sized transport aircraft, passenger planes, and fighter jets, which requires high sensor installation accuracy. It results in high processing costs and low labor efficiency; at the same time, this method has a low amplitude-frequency response and a large measuring range, which can basically meet the requirements when performing high-power drop shock tests, but for small-power landing gear, the amplitude-frequency response of the product High, the load measurement error is large, and it cannot effectively simulate and truly reflect the cushioning performance of the product. [0003] Based on the lateral load me...

AI Technical Summary

Problems solved by technology

[0002] Four or six piezoresistive three-way force sensors are commonly used in the three-way ground load measurement in landing gear drop tests of large and medium-sized transport aircraft, passenger planes, and fighter jets, which requires high sensor installation accuracy. It results in high processing costs and low labor efficiency; at the same time, this method has a low amplitude-frequency response and a large measuring range, which can basically meet the requirements when performing high-power drop shock tests, but for small-power landing gear, the amplitude-frequency response of the product High, the load measurement error is large, and it cannot effectively simulate and truly reflect the cushioning performance of the product

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