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Diagnosing experiment platform for non-linear vibration fault of gears

A nonlinear vibration and experimental platform technology, applied in the direction of machine gear/transmission mechanism testing, etc., can solve the problems of complex loading system, change of vibration environment, troublesome gear replacement, etc., and achieve good effect, small vibration interference, and convenient disassembly.

Inactive Publication Date: 2014-06-04
BEIJING FORESTRY UNIVERSITY
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Problems solved by technology

There are two main problems in the current experimental platform: one is that the loading system is complex, such as mechanical weight loading, which is accompanied by vibration; the other is that it is troublesome to replace the gears, and most of the bearings are supported by simply supported beams. Bearing, and the removal of the bearing will change the original vibration environment

Method used

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  • Diagnosing experiment platform for non-linear vibration fault of gears
  • Diagnosing experiment platform for non-linear vibration fault of gears

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Embodiment Construction

[0018] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0019] The purpose of the present invention is to design an experimental platform for gear nonlinear vibration fault diagnosis, which can load the gear transmission, facilitate setting faults on the gear and replace the gear, detect the vibration signal of the faulty gear under different loads through the vibration sensor, and analyze all The detected signal is analyzed to carry out algorithm research and verification on gear faults.

[0020] A gear nonlinear vibration fault diagnosis experiment platform provided by the present invention, such as figure 1 As shown, it includes: input shaft vibration sensor 1; signal amplifier 2; output shaft vibration sensor 3; data acquisition card 4; signal processing computer 5; load servo motor controller 6; drive servo motor controller 7; man-machine interface 8; And the experimental platform body.

[0021] The...

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Abstract

The invention provides a diagnosing experiment platform for a non-linear vibration fault of gears. The diagnosing experiment platform is applied to the technical field of gear vibration fault diagnosis. Two gears of a gear reducer in the experiment platform are connected with an input shaft and an output shaft respectively in a cantilever structural form. The input shaft and the output shaft are respectively fixed to a bearing seat through bearings with a certain distance. The output shaft is connected with a load servo motor through a belt, a vibration sensor is arranged on the bearing seat, the vibration sensor is in electrical connection with a signal amplifier, a signal amplified by the signal amplifier is transmitted to a signal processing computer through a data acquisition card, and parameter setting and state monitoring are conducted on a drive servo motor and the load servo motor through corresponding controllers and human-machine interfaces. The diagnosing experiment platform for the non-linear vibration fault of gears is small in vibration interference, the gears are convenient to disassemble, the gears can be accurately loaded through loading of the servo motor, vibration caused by mechanical loading and the beat vibration phenomenon of the gears in the time of no-load is avoided, and a structure is simple.

Description

technical field [0001] The invention belongs to the technical field of gear vibration fault diagnosis, and in particular relates to an experimental platform for gear nonlinear vibration fault diagnosis. Background technique [0002] In many important equipment and large equipment, there are gear transmissions. During operation, gears vibrate due to external and internal excitations. Due to the existence of friction, backlash and time-varying stiffness, gear vibration exhibits nonlinear characteristics. Effective fault diagnosis of gears is an important guarantee for the safe operation of transmission systems. Many scholars have been working on the algorithm research of gear fault diagnosis, especially nonlinear fault diagnosis. Appropriate experimental platform is crucial to carry out related algorithm research. There are two main problems in the current experimental platform: one is that the loading system is complex, such as mechanical weight loading, which is accompan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/02
Inventor 苏勋文曹双倩刘紫刘乐杨柳
Owner BEIJING FORESTRY UNIVERSITY
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