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Loading method and loading device for fatigue test

A technology for fatigue testing and loading equipment, which is applied in the direction of applying repeated force/pulsation force to test the strength of materials, measuring devices, instruments, etc. It can solve the problems of large loading load error, small fatigue test load, and inability to fix, and achieve reduction Load error, high reliability, and easy maintenance

Inactive Publication Date: 2020-03-24
XIAN AIRCRAFT IND GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the fatigue test of some components, due to the large range of the hydraulic cylinder, the fatigue test load of the component is small, resulting in excessive load error, and the hydraulic cylinder loading test is complicated and expensive
Small-sized parts can be loaded by the fatigue testing machine, but for relatively large-sized parts, they cannot be fixed on the fatigue testing machine for loading

Method used

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  • Loading method and loading device for fatigue test
  • Loading method and loading device for fatigue test
  • Loading method and loading device for fatigue test

Examples

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Embodiment Construction

[0017] Referring to the accompanying drawings, the loading equipment for the fatigue test provided by the application contains a loading device and a power unit, and the loading device contains a displacement limiting base 1, a loading platform 3, and a loading mass 5, and the displacement limiting The base 1 contains a plurality of parallel vertical slide rails 2, and the loading platform 3 is provided with a plurality of displacement pulleys 4, which are matched with the vertical slide rails 2 on the displacement limiting base 1, so that the loading platform 3 can slide vertically The rail 2 moves up and down, the bottom of the loading platform 3 is provided with a transmission pulley 15, and the upper end of the loading platform 3 is provided with a traction point 6. The loading mass 5 can be placed on the loading platform 3, and the power device includes a motor 8 And cam 10, cam 10 is positioned on the transmission shaft 9 of motor 8, and cam 10 matches with the transmissi...

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Abstract

The invention discloses a loading method and a loading device for a fatigue test. The loading device comprises a loading device and a power device, the loading device comprises a displacement limitingbase, a loading platform and a loading mass block, and the loading platform is provided with a plurality of displacement pulleys. The displacement pulleys are matched with a vertical sliding rail onthe displacement limiting base, a traction point is arranged at the upper end of the loading platform, and the power device comprises a motor and a cam. The cam is located on a transmission shaft of the motor and is matched with a transmission pulley at the bottom of the loading platform, and the motor drives the loading platform to move up and down along the vertical sliding rail through the cam.A traction rope for transmitting load is arranged, a force sensor is arranged on the traction rope, one end of the traction rope is connected with the traction point of the loading platform, and theother end of the traction rope is connected with a fatigue test piece. The loading platform is driven by the cam on the transmission shaft to move up and down along the vertical sliding rail, and theloading platform transmits fatigue load to the fatigue test piece through the traction rope.

Description

technical field [0001] The invention belongs to the field of aircraft fatigue test design, in particular to a loading method and a loading device for performing fatigue tests on aircraft components. Background technique [0002] For fatigue tests of large aircraft parts, hydraulic cylinders are generally used for loading. For the fatigue test of some components, due to the large range of the hydraulic cylinder, the fatigue test load of the component is small, which leads to excessive loading error, and the hydraulic cylinder loading test is complicated and expensive. Small-sized parts can be loaded by a fatigue testing machine, but relatively large-sized parts cannot be fixed on a fatigue testing machine for loading. [0003] For the fatigue test of large-sized and lightly loaded aircraft parts, there is an urgent need for a fatigue test loading device that can ensure high loading accuracy, does not limit the size of parts, has simple equipment, and is easy to maintain. C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/02G01N3/38
CPCG01N3/02G01N3/38
Inventor 王强安彦
Owner XIAN AIRCRAFT IND GROUP
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