Vertical servo loading device

Abstract

The invention relates to the field of airplane structural strength test loading equipment, in particular to a vertical servo loading device in order to at least solve the problem that an existing device is low in test precision. The device comprises a load cell, a pull rod, a lever, a first bearing, a second bearing, a first loading connector, a second loading connector and an extensible part, wherein the top end of the pull rod is hinged to the bottom end of the load cell; a connecting part of the lever is hinged to the bottom end of the load cell; the first bearing and the second bearing are arranged on two horizontal sections of the lever correspondingly; the first loading connector and the second loading connector are connected with the first bearing and the second bearing correspondingly; the top end of the extensible part is connected with the first loading connector, and the bottom end of the extensible part is connected with a first base; and the bottom end of the second loading connector bypasses a chain wheel of a second base through a roller chain to be connected with a loading actuator cylinder. In the loading process of the vertical servo loading device, the loading position can be automatically adjusted along with the movement of a loading point of a test piece, generation of additional course components is prevented in the vertical loading process of an airplane structural test, and the loading test precision is improved.

Description

technical field [0001] The invention relates to the field of loading equipment for aircraft structure strength tests, in particular to a vertical follow-up loading device. Background technique [0002] In some working conditions of the aircraft structure test, such as the landing gear test condition, the vertical upward load of the loading point is generally applied through the column-crowbar method or vertically loaded by the actuator directly below the loading point; however, this The two loading methods can only ensure that the direction of the test load is vertical at the initial moment of loading. Since the loading point will deviate from the initial position with the deformation of the test piece during the test loading process, the loads applied by these two loading methods will be in the test loading process. In the process, additional heading load components will inevitably be generated, which affects the accuracy of the test loading. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of this invention is to provide a kind of vertical follow-up loading device, to at least solve the problem of low test precision of existing vertical test loading device

Images