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Undercarriage ejection rod folding and unfolding performance testing machine

A landing gear and testing machine technology, applied in the direction of aircraft component testing, etc., can solve the problems of inaccurate force control, low detection accuracy of retraction time, etc., and achieve the effects of high loading accuracy, simple installation and loading implementation, and high detection accuracy.

Active Publication Date: 2020-01-17
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the past, the retractable performance test of the landing gear ejection rod was mostly carried out by means of a spring balance and a cable sensor. The disadvantages are: 1) the detection accuracy of the retractable time is low, 2) the force control is not accurate

Method used

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  • Undercarriage ejection rod folding and unfolding performance testing machine
  • Undercarriage ejection rod folding and unfolding performance testing machine
  • Undercarriage ejection rod folding and unfolding performance testing machine

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Embodiment Construction

[0019] In order to detail the technical content, structural features, achieved goals and effects of the present invention, the following will be described in detail in conjunction with the accompanying drawings.

[0020] Landing gear ejection rod retractable performance test machine, such as figure 1 As shown, it includes a landing gear assembly, a test stand assembly and a performance test assembly.

[0021] landing gear components such as figure 1 and figure 2 As shown, it includes landing gear body, landing gear buffer strut 2, buffer strut piston rod 3, ejection rod rotating shaft 4, ejection rod bearing 5 and ejection rod 6, the upper crossbeam of landing gear assembly and C-shaped test frame 1 The lower surface is fixedly connected, the landing gear body is fixedly connected to the landing gear buffer strut 2, the landing gear buffer strut 2 is provided with a vertical central hole, the central hole of the landing gear buffer strut 2 is connected to the buffer strut p...

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Abstract

The invention provides an undercarriage ejection rod folding and unfolding performance testing machine. The testing machine comprises an undercarriage assembly, a test rack assembly and a performancetest assembly, and the test rack assembly comprises a C-shaped test rack, a rectangular sleeve cup, a proximity switch, a stand column and a guide rod. The C-shaped test rack is fixedly connected withthe concrete foundation, the rectangular sleeve cup is formed by welding a cup wall plate and a bottom plate, the bottom plate of the rectangular sleeve cup faces upwards, and vertical cylindrical through holes are formed in the center and at the four vertex angles of the bottom plate of the rectangular sleeve cup respectively. The performance test assembly comprises an anti-impact base plate, arectangular lifting platform, a pull pressure sensor, a cylinder and a connecting shaft, the first end face of the pull pressure sensor is fixedly connected with the upper end of a cylinder piston rod, and the second end face is fixedly connected with a first end face of the connecting shaft. The second end face of the connecting shaft is fixedly connected with the lower surface of the rectangularlifting platform, and the anti-impact base plate is fixedly connected with upper surface of the rectangular lifting platform. According to the invention, the detection precision of the folding and unfolding time is improved, the labor intensity of workers is reduced, and the experimental data more fitting the reality is obtained.

Description

technical field [0001] The invention relates to the technical field of design and development of a performance test device, in particular to a retractable performance test machine for an ejection rod of a landing gear. Background technique [0002] The ejection lever part of the landing gear is one of the key components of the carrier-based aircraft, and its working performance, reliability and stability will directly affect the flight safety of the carrier-based aircraft. Therefore, a ground test must be carried out on the retractable performance of the landing gear ejection rod before installation. [0003] In the past, the retractable performance test of the landing gear ejection rod was mostly carried out by using a spring balance and a cable sensor. The disadvantages are: 1) the detection accuracy of the retractable time is low, and 2) the force control is not accurate. Contents of the invention [0004] Aiming at the problems existing in the traditional retractable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64F5/60
CPCB64F5/60
Inventor 刘喜平姚静翟富刚
Owner YANSHAN UNIV
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