Device and method for measuring ground steering moment of main wheel turning

Abstract

The invention discloses a main wheel turning ground steering moment measuring device and method, which includes a support base, a torque sensor is installed vertically on the support base, and a ground simulation platform is horizontally installed on the top of the support base through a slewing bearing. The torque sensor is connected to the ground simulation platform through a torque pin, and the support base is fixedly connected to the inner ring of the slewing bearing, and the ground simulation platform is fixedly connected to the outer ring of the slewing bearing, so that the ground simulation platform The platform can turn relative to the support base. The invention avoids the influence of the vertical load on the torque sensor, and can directly measure the torsional moment under the coupling conditions of many influencing factors such as different load distribution, tire pressure and tire-ground relative friction through the torque sensor, and solves the problem of the force sensor The limitation of the measured torque reduces the influence of additional factors such as transmission and friction loss on the test results.

Description

technical field [0001] The invention relates to a frame-type main landing gear test, in particular to a device and method for measuring ground steering moment of a main wheel of a frame-type main landing gear when turning. Background technique [0002] When the frame-type main landing gear is turning, in order to improve the turning efficiency and reduce the turning radius, the last pair of main wheels need to be turned. However, due to the load distribution of the whole machine, the load distribution of run flat tires, tire pressure and Many factors, such as tire relative friction, have a great influence on the turning torque, so it is necessary to test whether the main wheel steering mechanism can meet the fast and effective turning torque provided by the frame-type main landing gear when the aircraft is turning. It is an important indicator of aircraft functional performance for such products. [0003] In the previous turning moment measurement test, since the torque sen...

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Problems solved by technology

[0003] In the previous turning moment measurement test, since the torque sensor cannot withstand the axial tension and compression load, the torsional force is usually measured first by the force sensor, and then converted into torsional moment according to the wheel base of the main engine. However, this method cannot effectively measure the torque of the main engine. The turning moment after the relative sliding between the wheel and the dynamometer surface, especially for the torque measurement when the load distribution of the left and right tires is uneven

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