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Fatigue test clamp for bulkhead typical angular connecting pieces and using method

A technology for fatigue testing and connecting parts, which is applied in the direction of aircraft component testing, workpiece clamping devices, manufacturing tools, etc. It can solve problems such as slippage, camber deformation, and disappearance of clamping force, so as to reduce labor intensity, compact components, and facilitate loading and unloading. convenient effect

Pending Publication Date: 2020-08-21
SHENYANG SHENGYUAN INSPECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the small size of the angle connectors, if they are directly installed on the tensile machine, the fixtures of the existing tensile testing machine are prone to camber deformation, clamping force disappearing, and slipping during the tensile test.

Method used

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  • Fatigue test clamp for bulkhead typical angular connecting pieces and using method
  • Fatigue test clamp for bulkhead typical angular connecting pieces and using method
  • Fatigue test clamp for bulkhead typical angular connecting pieces and using method

Examples

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Effect test

Embodiment 1

[0038] Such as Figure 1~8 Shown: A fatigue test fixture for typical angled connectors of bulkheads, including a fixed box body 10, a side plate 4, a lever 8 and a loading mechanism. The fixed box body 10 and the lever 8 are vertically connected (in an L-shape) The fixed box body 10 is fixedly connected from bottom to top with the horizontal part of the angle connecting piece 9 and the side plate 4, the side plate 4 includes a bottom surface and a side surface, one side of the horizontal part of the angle connecting piece 9 and the fixed box The side surface of the body 10 is fixedly connected, the other side of the horizontal part of the angle connector 9 is fixedly connected to the side surface of the side plate 4, and the bottom surface of the side plate 4 is fixedly connected to the bottom surface of the fixed box body 10; the lever 8 is provided with a groove, The vertical part of the angle connecting piece 9 is fixed in the groove; one side of the vertical part of the ang...

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Abstract

The invention provides a fatigue test clamp for a bulkhead typical angular connecting piece and a using method. The fatigue test clamp is particularly suitable for an L-shaped connecting piece havinga design requirement on a special cross section. The clamp comprises a fixing box body, a side plate, a lever and a loading mechanism, wherein the fixing box body is vertically connected with the lever; a horizontal part of the angular connecting piece and the side plate are fixedly connected in the fixing box body from bottom to top, and the side plate is fixedly connected with the horizontal part of the angular connecting piece; the lever is provided with a groove, and a vertical part of the angular connecting piece is fixed in the groove; and the loading mechanism comprises an upper loadingassembly and a lower loading assembly, the upper loading assembly is rotationally connected with the fixing box body, and the lower loading assembly is rotationally connected with the lever. In the loading process, a loading piece connected with the angular connecting piece can move along with the displacement of a clamping head of a testing machine, so that the actual stress state of the angularconnecting piece is accurately simulated; and the clamp is reasonable in structural design and convenient to clamp, and ensures that a fatigue test of a connecting piece with special design requirements on a loaded part is smoothly carried out.

Description

Technical field [0001] The invention belongs to the technical field of clamps, and specifically relates to a fatigue test clamp and a test method for typical angular connectors of bulkheads, especially for aircraft angular connectors with load requirements. Background technique [0002] Most of the angled connectors on aircraft bear alternating loads. Fatigue failure is the main failure mode. Therefore, it is very important to study the fatigue strength and fatigue life of aircraft angled components through experiments. The fatigue performance experiment of the angle connector requires the test piece of the angle connector to be clamped on a specially designed fixture, and the fatigue testing machine implements loading through the loading fixture, and finally obtains the mechanical properties such as fatigue strength, fatigue life, and failure mode of the model. Therefore, the correct simulation of the mechanical characteristics of the aircraft in flight by the experimental fixtu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B11/00B64F5/60
CPCB25B11/00B64F5/60
Inventor 许良马少华周松王宏达宋胜
Owner SHENYANG SHENGYUAN INSPECTION TECH
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