Crankshaft bend fatigue test system and method

A bending fatigue and test system technology, applied in the field of machinery, can solve the problems of poor authenticity and accuracy of test results and analysis results, lack of test organization and management methods, intelligence, and low level of automation, so as to reduce human participation, Ease of test operation and reduction of manpower burden

Inactive Publication Date: 2005-03-23
ZHEJIANG UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0006] (1) The load accuracy of the test device is low, about ±5%;
[0007] (2) The load calibration calculation method is relatively backward; the precise mathematical statistics and analysis methods are not fully utilized to process the test data; the test results and analysis results have problems of poor authenticity and accuracy
[0008] (3) Modern test control technology and scientific test organization and management methods are not adopted; the system has a low level of intelligence and automation

Method used

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  • Crankshaft bend fatigue test system and method
  • Crankshaft bend fatigue test system and method
  • Crankshaft bend fatigue test system and method

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Embodiment Construction

[0021] The present invention will be described in detail below according to the accompanying drawings.

[0022] Figure 1~3 The detailed structure of the crankshaft bending fatigue test system of the present invention is shown. The present invention adopts a horizontal high-speed resonant platform with convenient operation and a loading mechanism with adjustable swing arm inertia and excitation torque; a computer with strong data management and calculation processing capabilities and a long-term stable operation capability and power-off The upper and lower units composed of programmable controllers with protection capabilities constitute the core of the system's measurement and control.

[0023] Such as figure 1 As shown, the crankshaft 1 and the swing arm 11 form a resonance platform. The strain gauge 2 is pasted on the rounded corner of the crankshaft 1, the compensation strain gauge 3 is pasted on the crankshaft 1, both the strain gauge 2 and the compensation strain gaug...

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Abstract

The invention discloses a crank bending fatigue experiment system and method. The system is mainly made up of resonance desk, vibration generator, transducer, programmable logic controller, sensor group, stress amplifier and computer. The invention reduces the manpower burden; the operation is simple and convenient. The accuracy is upgraded greatly.

Description

technical field [0001] The invention relates to the mechanical field, in particular to a crankshaft bending fatigue test system and test method applied to mechanical product reliability evaluation and research. Background technique [0002] The reliability of mechanical products has always been concerned by people because of its important impact on human production and life. As a key bearing part of internal combustion engine, one of the main contents of crankshaft reliability is its bending fatigue problem under the action of high cycle fatigue stress. With the continuous strengthening of internal combustion engines, this problem will inevitably exist for a long time as a hot spot. [0003] Due to the complexity of the crankshaft fatigue problem, there are still many limitations in the current technical level to analyze the reliability of the crankshaft in actual work through calculation. It is necessary to simulate the working process through the test method to obtain som...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/00G01N19/00
Inventor 周迅俞小莉刘震涛沈瑜铭齐放
Owner ZHEJIANG UNIV
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