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Gear dynamic stress test device

A testing equipment, dynamic stress technology, applied in the testing of machine gear/transmission mechanism, testing of mechanical components, force/torque/work measuring instrument, etc. simple structure

Active Publication Date: 2016-06-01
CHINA AVIATION POWER MACHINE INST
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The invention provides a gear dynamic stress testing device to solve the technical problem of dynamic stress testing of accessory transmission gears under the limited conditions of high testing speed, complex vibration environment, compact structure and limited space

Method used

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Embodiment Construction

[0033] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0034] refer to figure 1 , the preferred embodiment of the present invention provides a kind of gear dynamic stress testing equipment, comprises motor 10, is used as the power source of dragging; Pass to accessory transmission system 30 after; Accessory transmission system 30, comprise the gear to be tested 31 and the engine accessory 34 and / or aircraft accessory 32 that are loaded on the gear to be tested 31, be used for undertaking the rotating speed that speed increaser 20 transmits, drive The gear to be measured 31 rotates; the strain gauge is arranged on the web plate of the gear to be measured 31, and is used to collect the strain signal of the gear to be measured 31; Measure the strain...

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Abstract

The invention discloses a gear dynamic stress test device, comprising a motor, speed increasing gear, an accessory transmission system, a strain gage, a sliding ring electricity introducing device, and a dynamic analysis system. The motor is used as a power source for dragging; the speed increasing gear is connected to the motor for accelerating the rotation speed of the motor and transmitting the rotation speed to the accessory transmission system; the accessory transmission system comprises a gear to be tested and an engine accessory and / or a plane accessory which are installed on a gear to be tested; the strain gage is arranged on a spoke plate for collecting strain signals of the gear to be detected; the slip ring electricity introducing device is connected to the strain gage for transmitting the strain signal of the gear to be tested; the dynamic analysis system is connected to the slip ring electricity introducing device for performing amplification and conditioning on the strain signal of the gear to be tested which is transmitted to the slip ring electricity introducing device and processing and outputting the dynamic strain signal. The invention effectively simulates the real working condition of the accessory transmission gear, the structure is simple and the reliability of the test is high.

Description

technical field [0001] The invention relates to the field of gear testing, in particular to a gear dynamic stress testing device. Background technique [0002] The accessory transmission system of an aeroengine is one of the key components of the engine, and the failure of the accessory transmission gear may directly cause the engine to cut off oil, power or stop. With the continuous development of accessory drive systems towards high-speed miniaturization and integration, gear vibration and fatigue failure have become one of the key factors restricting the development of modern aero-engine accessory drive systems. The gear dynamic stress measured under actual working conditions not only represents the fatigue strength and life of the gear, but also can be used to analyze the actual vibration of the gear from its frequency spectrum. Therefore, the research on dynamic stress testing technology of aero-engine accessory transmission gear under actual working conditions has imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/02G01L5/00
CPCG01L5/0061G01M13/021
Inventor 陈青兰江平雷敦财黄向阳雷沫枝
Owner CHINA AVIATION POWER MACHINE INST
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