CN203011692U - Portable fault diagnosing device for rolling bearing - Google Patents
Portable fault diagnosing device for rolling bearing Download PDFInfo
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- CN203011692U CN203011692U CN 201220634812 CN201220634812U CN203011692U CN 203011692 U CN203011692 U CN 203011692U CN 201220634812 CN201220634812 CN 201220634812 CN 201220634812 U CN201220634812 U CN 201220634812U CN 203011692 U CN203011692 U CN 203011692U
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- rolling bearing
- bearing
- diagnosing device
- fault diagnosing
- portable fault
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Abstract
The utility model relates to a bearing detecting and diagnosing device and specifically relates to a portable fault diagnosing device for a rolling bearing. The portable fault diagnosing device for the rolling bearing includes a hardware system and a software system. The hardware system includes an acceleration sensor arranged on a bearing pedestal. The acceleration sensor is connected with a signal modulator and a data collecting card. The data collecting card is connected with a computer through a data cable. The software system includes a data collecting module, a bearing parameter module and a signal processing module. The portable fault diagnosing device for the rolling bearing provided by the utility model has advantages that the portable fault diagnosing device for the rolling bearing is small in detection device size, low in manufacturing cost and convenient to operate. At the same time, by using the portable fault diagnosing device for the rolling bearing, diagnosis with comparatively high precision can be realized.
Description
Technical field
The utility model relates to bearing and detects diagnostic device, specifically a kind of portable rolling bearing fault diagnosis device.
Background technology
The method of at present rolling bearing being diagnosed mainly contains rod and electronic auscultation device mensuration, acoustic emission (AE) diagnosis, temperature monitoring diagnosis and the play monitoring, diagnosing method etc. of listening.
Wherein more traditional method is to adopt to listen rod and electronic auscultation device mensuration to test rolling bearing, this method is simple, can check, judge the fatigue damage of bearing, experienced personnel can diagnose out the fatigue flake that has just occured, even also can diagnose out the position of damage, but the method requires diagnostic personnel must accumulate a large amount of practical experiences, and also higher to the requirement of neighbourhood noise, influence factor is more, and reliability ratio is relatively poor.
Another kind of method is acoustic emission (AE) diagnosis, the generation of rolling bearing fault and development, all be accompanied by the generation of acoustic emission signal, adopt acoustic emission to diagnose and to obtain very significantly characteristic frequency, due to the bearing micro-crack extension need to through one for a long time, process slowly, acoustic-emission can early prediction and tracing trouble.Can effectively identify the failure message of rolling bearing due to the acoustic emission diagnostic method, certain development has been arranged in recent years aborning, but its fatal shortcoming is to need expensive specialized equipment and professional, thereby, be limited by very large in production application.
If rolling bearing has produced certain damage in use, its temperature will change, and therefore can diagnose bearing fault by the monitoring bearing temperature.The method is used very early, simultaneously because this method is simple and practical, really played certain effect in the patrolling and examining of rolling bearing, but the fatal shortcoming of this method is when temperature has obvious variation, fault has generally all reached quite serious degree, therefore can't find initial failure, and error is generally larger.
The play monitoring is also a kind of method of rolling bearing fault diagnosis.In the inner ring and outer ring of rolling bearing, even fixed one of them, but because its inside is gapped, loose bearing ring still can be to a side shifting, and this amount of movement is exactly the bearing clearance, claims again play.If bearing ring or rolling body wearing and tearing, the bearing clearance can increase, and compares with original gap width, namely knows wear extent.The gap determination method is more effective to the diagnosis of bearing wear, galvanic corrosion, but because its measurement is not direct, influence factor is more, and when the gap is larger, the fault of bearing has generally all reached quite serious degree, that is to say that this method can't find initial failure.
All there is defective in various degree in above method and apparatus, as large in equipment volume, cost is high, signal analysis method is relatively backward, can't realize adaptivity, particularly can't detect exactly in early days the damage of existing equipment centre bearer, and bearing be destroyed cause the damage of equipment.
Summary of the invention
The purpose of this utility model is exactly the problem that exists for solving prior art, and has designed a kind of portable rolling bearing fault diagnosis device.
The technical solution of the utility model is: a kind of portable rolling bearing fault diagnosis device, comprise hardware system and software systems, described hardware system comprises the acceleration transducer that is arranged on bearing base, acceleration transducer connects signal conditioner and data collecting card, and data collecting card is connected with computer by data cable; Described software systems comprise data acquisition module, bearing parameter module, signal processing module.
Described acceleration transducer adopts piezoelectric acceleration transducer; Signal condition uses charge amplifier; Computer adopts portable notebook computer.
Described signal processing module need be used the Hilbert-Huang transform method and analyze.
The beneficial effects of the utility model can draw by such scheme: owing to adopting acceleration transducer to collect signal and the processing by signal conditioner and data collecting card, then connect computer analysis, improved signal analysis method, and combined with virtual instrument development instrument LabVlEW 8.6, obtain the rolling bearing diagnostic system that operation is easy to carry, analysis precision is high.The utility model advantage also has the checkout equipment volume little, and low cost of manufacture is easy to operate, can realize the diagnosis of degree of precision simultaneously.
This shows, the utility model compared with prior art has substantive distinguishing features and progress, and the beneficial effect of its enforcement is also apparent.
Description of drawings:
Fig. 1 is that mechanism of the present utility model forms schematic diagram;
Fig. 2 is the signal analysis schematic diagram.
Wherein, 1 is rotating machinery device to be detected, and 2 is acceleration transducer, and 3 is bearing base, and 4 is charge amplifier, and 5 is data collecting card, and 6 is notebook computer.
Embodiment:
In order to understand better the utility model, explain in detail embodiment of the present utility model below in conjunction with accompanying drawing.
Embodiment: as shown in Figure 1, a kind of portable rolling bearing fault diagnosis device, comprise hardware system and software systems, described hardware system comprises the acceleration transducer 2 that is arranged on bearing base 3, acceleration transducer 2 connects signal conditioner and data collecting card 5, and data collecting card 5 is connected with notebook computer 6 by data cable.Acceleration transducer 2 adopts the ULT2405 piezoelectric acceleration transducer, and frequency response range is 0.2-4kHz, and resonance frequency is 12kHz.Signal conditioner uses LC0602 charge amplifier 4.Data collecting card 5 is selected NI PCI-6221 collection signal and is changed, and resolution is 16bits, the highest 250kS/s of sampling rate, and input voltage range is to the maximum-10～10V.
Described software systems are set comprise data acquisition module, bearing parameter module, signal processing module.Software systems are take Virtual Instrument Development instrument LabVlEW 8.6 as carrier, data by modules connect, complete corresponding function, there are data acquisition, signal processing, bearing parameter and waveform to show, signal processing module need be used Hilbert-Huang conversion (HHT) method and analyze, and the signal analysis principle as shown in Figure 2.
Wherein, data acquisition module is mainly realized the control to the data capture card, comprises signalization acquisition channel, sampling number etc., after correct configuration, completes collection and the convert task of vibration signal.The bearing parameter module is calculated the failure-frequency of each parts, as the foundation of signal analysis mainly by the structural parameters of different rolling bearings in conjunction with rotational speed.Signal processing module mainly is based on the analysis of improved HHT method, can carry out to the signal that collects EMD and decompose, and also can obtain the HHT spectrum, and proper vector that can also calculation bearing is carried out intelligent diagnostics.
Specific works process: at first the ULT2405 piezoelectric acceleration transducer is placed in the axial and radial position of bearing base; Then collect preprocessed signal and change by NI PCI-6221 data collecting card; Use improved HHT analytical approach to carry out analyzing and processing to the signal data that collects, carry out the envelope spectrum analysis by selecting suitable mode function (imf) component, and extract characteristic component.Analysis result is presented in the waveform display module.
Above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example; the variation that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement also should belong to protection domain of the present utility model.
Claims (2)
1. portable rolling bearing fault diagnosis device, comprise hardware system and software systems, it is characterized in that: described hardware system comprises the acceleration transducer that is arranged on bearing base, acceleration transducer connects signal conditioner and data collecting card, and data collecting card is connected with computer by data cable.
2. portable rolling bearing fault diagnosis device as claimed in claim 1, is characterized in that: described acceleration transducer employing piezoelectric acceleration transducer; Signal condition uses charge amplifier; Computer adopts portable notebook computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220634812 CN203011692U (en) | 2012-11-27 | 2012-11-27 | Portable fault diagnosing device for rolling bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220634812 CN203011692U (en) | 2012-11-27 | 2012-11-27 | Portable fault diagnosing device for rolling bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203011692U true CN203011692U (en) | 2013-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220634812 Expired - Fee Related CN203011692U (en) | 2012-11-27 | 2012-11-27 | Portable fault diagnosing device for rolling bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203011692U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104267345A (en) * | 2014-09-10 | 2015-01-07 | 珠海格力电器股份有限公司 | servo driver vibration suppression function test system |
| CN104764605A (en) * | 2015-04-23 | 2015-07-08 | 中国工程物理研究院总体工程研究所 | Online monitoring method for dynamic parameters of pressure feed air bearing |
| CN109883701A (en) * | 2017-12-04 | 2019-06-14 | 斯凯孚公司 | The method that self testing circuit and inspection signal pass through the integrality of signal path |
-
2012
- 2012-11-27 CN CN 201220634812 patent/CN203011692U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104267345A (en) * | 2014-09-10 | 2015-01-07 | 珠海格力电器股份有限公司 | servo driver vibration suppression function test system |
| CN104267345B (en) * | 2014-09-10 | 2017-03-22 | 珠海格力电器股份有限公司 | Servo driver vibration suppression function test system |
| CN104764605A (en) * | 2015-04-23 | 2015-07-08 | 中国工程物理研究院总体工程研究所 | Online monitoring method for dynamic parameters of pressure feed air bearing |
| CN104764605B (en) * | 2015-04-23 | 2017-04-05 | 中国工程物理研究院总体工程研究所 | The on-line testing method of pressure-feed air bearing dynamic parameter |
| CN109883701A (en) * | 2017-12-04 | 2019-06-14 | 斯凯孚公司 | The method that self testing circuit and inspection signal pass through the integrality of signal path |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20131127 |