CN204346711U - A kind of portable bearing fault diagnosing apparatus based on vibration detection - Google Patents
A kind of portable bearing fault diagnosing apparatus based on vibration detection Download PDFInfo
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- CN204346711U CN204346711U CN201520040477.2U CN201520040477U CN204346711U CN 204346711 U CN204346711 U CN 204346711U CN 201520040477 U CN201520040477 U CN 201520040477U CN 204346711 U CN204346711 U CN 204346711U
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Abstract
The utility model provides a kind of portable bearing fault diagnosing apparatus based on vibration detection, involving vibrations sensor and portable bearing fault diagnostic instrument; Portable bearing fault diagnostic instrument comprises housing and circuit arrangement; Circuit arrangement comprises A/D modular converter, DSP data analysis module, ARM data processing module, memory module, display module and power module; The signal of the vibration transducer after acquisition process is uploaded to DSP data analysis module by A/D modular converter to carry out analyzing and breakdown judge; ARM data processing module receives result and memory allocated and display.The utility model be easy and simple to handle fast, diagnostic accuracy and automaticity high, effectively can realize the Real-Time Monitoring to rolling bearing fault and fault diagnosis.
Description
Technical field
The utility model relates to Bearing testing technical field, is specifically related to a kind of portable rolling bearing fault diagnosis device based on vibration detection.
Background technology
Rolling bearing is the vitals of colliery Diagnosing System for Oil Pump, and its poor working environment, load weight, during operation, various fault easily occurs, and even causes device damage and causes security incident, affecting Safety of Coal Mine Production.Therefore, the duty of rolling bearing to be detected and fault diagnosis is very important.At present, detection for the rolling bearing in the main equipment of colliery is generally undertaken by artificial mode, testing staff is by manual detection or by parameter that some supplementary instruments show or curve, judge the state of rolling bearing by rule of thumb, high to the competency profiling of testing staff like this, testing process is intelligent not, and detection efficiency is low.
Utility model content
The purpose of this utility model is: for prior art Problems existing, the utility model provide a kind of simple and compact for structure, with low cost, easy to operate fast, diagnostic accuracy is high, the portable rolling bearing fault diagnosis device based on vibration detection that can meet high automation degree.
The technical solution of the utility model is: the portable rolling bearing fault device based on vibration detection of the present utility model, and its design feature is: involving vibrations sensor and portable bearing fault diagnostic instrument; Vibration transducer is fixedly mounted on tested rolling bearing when using;
Portable bearing fault diagnostic instrument is integrated part; Portable bearing fault diagnostic instrument comprises housing and circuit arrangement; The circuit arrangement of portable bearing fault diagnostic instrument comprises A/D modular converter, DSP data analysis module, ARM data processing module, memory module, display module and power module;
A/D modular converter and DSP data analysis module are respectively equipped with signal input part and signal output part; ARM data processing module is provided with analysis result signal input part, storing communication end and display output terminal; Memory module is provided with communication ends; Display module is provided with signal input part;
The signal input part of A/D modular converter is electrically connected with vibration sensor signal; The signal input part of DSP data analysis module is electrically connected with the signal output part signal of A/D modular converter; The analysis result signal input part of ARM data processing module is electrically connected with the signal output part signal of DSP data analysis module; The communication ends of memory module is electrically connected with the storing communication end two-way signaling of ARM data processing module; The signal input part of display module is electrically connected with the display output end signal of ARM data processing module; Power module is used for providing working power.
Further scheme is: above-mentioned vibration transducer is KGS18 type Mine-used I. S vibration acceleration sensor.
The utility model has positive effect: (1) rolling bearing fault diagnosis device based on vibration detection of the present utility model, simple and compact for structure, with low cost.(2) the rolling bearing fault diagnosis device based on vibration detection of the present utility model, when it uses, fast easy and simple to handle, fault diagnosis precision is high.(3) the rolling bearing fault diagnosis device based on vibration detection of the present utility model, by detecting and extract the vibration signal of rolling bearing during use, convert frequency signal to, the frequency signal feature detected in real time and the built-in failure-frequency feature of portable bearing fault diagnostic instrument are compared, to realize the automatic decision to rolling bearing fault, automaticity is high, can the generation of the effective rolling bearing fault of Monitoring and prevention colliery unit.
Accompanying drawing explanation
Fig. 1 is the circuit arrangement schematic diagram of the portable rolling bearing fault diagnosis device based on vibration detection of the present utility model;
Fig. 2 is the utility model arrangement schematic diagram in use;
Fig. 3 is the process flow diagram of the portable Fault Diagnosis of Roller Bearings based on vibration detection of the present utility model.
Reference numeral in above-mentioned accompanying drawing is as follows:
Vibration transducer 1,
Portable bearing fault diagnostic instrument 2, A/D modular converter 21, DSP data analysis module 22, ARM data processing module 23, memory module 24, display module 25, power module 26,
Tested rolling bearing 3.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
(embodiment 1)
See Fig. 1 and Fig. 2, the portable rolling bearing fault diagnosis device based on vibration detection of the present embodiment, forms primarily of vibration transducer 1 and portable bearing fault diagnostic instrument 2, for carrying out fault detect to tested rolling bearing 3.
KGS18 type Mine-used I. S vibration acceleration sensor is preferably adopted in vibration transducer 1 the present embodiment.Vibration transducer 1 is fixedly mounted on when using on tested rolling bearing 3.During work, vibration transducer 1 is for receiving the vibration signal of tested rolling bearing 3 and being uploaded to portable bearing fault diagnostic instrument 2.
Portable bearing fault diagnostic instrument 2 is integrated part.Portable bearing fault diagnostic instrument 2 comprises housing and circuit arrangement.The circuit arrangement of portable bearing fault diagnostic instrument 2 forms primarily of A/D modular converter 21, DSP data analysis module 22, ARM data processing module 23, memory module 24, display module 25 and power module 26.
A/D modular converter 21 and DSP data analysis module 22 are respectively equipped with signal input part and signal output part; ARM data processing module 23 is provided with analysis result signal input part, storing communication end and display output terminal; Memory module 24 is provided with communication ends; Display module 25 is provided with signal input part.
The signal input part of A/D modular converter 21 is electrically connected with vibration transducer 1 signal; The signal input part of DSP data analysis module 22 is electrically connected with the signal output part signal of A/D modular converter 21; The analysis result signal input part of ARM data processing module 23 is electrically connected with the signal output part signal of DSP data analysis module 22; The communication ends of memory module 24 is electrically connected with the storing communication end two-way signaling of ARM data processing module 23; The signal input part of display module 25 is electrically connected with the display output end signal of ARM data processing module 23; Power module 26 is for providing working power.
A/D modular converter 21 is for carrying out Data collecting conversion and filtering noise reduction to the signal of vibration transducer 1 collect and transmit; DSP data analysis module 22 pairs of vibration signals carry out Treatment Analysis and feature extraction: carry out frequency spectrum calculating to vibration signal, failure-frequency calculates, vibration peak calculates and extract following characteristics: spectrum signature, failure-frequency feature, sharp peaks characteristic carry out breakdown judge; Finally result data are passed to ARM data processing module 23 pairs of result datas to show, store and transmit.
The portable rolling bearing fault diagnosis device based on vibration detection of the present embodiment, it mainly comprises for the method for rolling bearing fault diagnosis with step:
1. vibration transducer obtains vibration signal: the vibration signal being installed on the vibration transducer 1 real-time reception rolling bearing 3 on rolling bearing 3, and the vibration signal received is sent to the A/D modular converter 21 of portable bearing fault diagnostic instrument 2;
2. A/D modular converter signals collecting: the A/D modular converter 21 of portable bearing fault diagnostic instrument 2 gathers after signal that vibration transducer 1 uploads carries out analog-to-digital conversion module and signal is uploaded to DSP data analysis module 22;
3. DSP data analysis module 22 analyzing and processing: DSP data analysis module 22 is built-in with rolling bearing 3 failure collection and the fault characteristic frequency set corresponding with rolling bearing 3 failure collection, specifically as shown in table 1:
For rolling bearing 3 inner ring fault, outer ring fault, rolling body fault, retainer fault, concrete diagnostic procedure is as follows:
When rolling bearing 3 produces defect, the rolling body of rolling bearing 3 and raceway contact point encounter a local defect will produce a shock pulse.Defect is when rolling bearing 3 diverse location, and contact point is different by the shock pulse frequency produced during defect, and this frequency is referred to as characteristic frequency.The complex vibration signal containing this characteristic frequency detected is uploaded to the A/D modular converter 21 in portable bearing fault diagnostic instrument 2 by vibration transducer 1, undesired signal after carrying out analog to digital conversion is removed in the physics filtering that A/D modular converter 21 carries out signal, effective digital signal is sent to DSP data analysis module 22 pairs of signals and carry out computational analysis, the formula of the calculating of the fault characteristic frequency to rolling bearing 3 that DSP data analysis module 22 is built-in is as follows:
A, inner ring turn frequently:
(1), in formula: N is rotating speed;
B, rolling body (or retainer) are by the frequency of an impaired loci in inner ring:
（2），
In formula, Z is rolling body number, and d is rolling body diameter, and D is bearing pitch diameter,
for pressure angle;
C, rolling body (or retainer) are by the frequency of an impaired loci on outer shroud:
（3）
On d, rolling body one damages the frequency put by inner ring or outer shroud:
（4）
The gyro frequency (i.e. the revolution frequency of rolling body) of e, retainer:
（5）
Physical parameter value involved in above-mentioned calculating formula is input in DSP data analysis module 22 according to the measured data of rolling bearing 3.DSP data analysis module 22 calculates according to above-mentioned formula, obtains characteristic frequency value S1, S2, S3, S4, S5, i.e. fault characteristic frequency set.
The vibration signal of DSP data analysis module 22 to the rolling bearing 3 received carries out spectrum signature and calculates:
DSP data analysis module 22 adopts fourier transform algorithm to carry out spectrum signature computing, spectrum signature collection Z(n corresponding under obtaining time domain waveform)=(m0, m1, m2mn), n=0.5p in formula, and p=sampling number, m is the frequency amplitude under corresponding sequence, Z(m) be the vibration equipment frequency values set that useful signal comprises.Determine for reference value the m value that Z (s) is corresponding with characteristic frequency value S, if ms<1, then think that S1 fault signature does not exist; If ms>1, then think that S1 fault signature exists, in corresponding fault type Sample Storehouse, A1 inner ring fault is the fault that equipment exists.Equally, with S2, S3, S4, S5 for reference value, comparison Z(n) mn value in characteristic set, can judge in Sample Storehouse, whether fault type A2, A3, A4, A5 exist, thus the fault diagnosis of finishing equipment; Analysis processing result is uploaded to ARM data processing module 23 by DSP data analysis module 22;
4. failure analysis result stores and display: ARM data processing module 23 receives the real time data that DSP data analysis module 22 is uploaded, and is transferred to memory module 24 and stores; Simultaneously analysis processing result is transferred to display module 25 and shows in real time.
Above embodiment is the explanation to embodiment of the present utility model; but not to restriction of the present utility model; person skilled in the relevant technique is not when departing from spirit and scope of the present utility model; can also make various conversion and change and obtain corresponding equivalent technical scheme, therefore all equivalent technical schemes all should be included into scope of patent protection of the present utility model.
Claims (2)
1. based on a portable rolling bearing fault diagnosis device for vibration detection, it is characterized in that: involving vibrations sensor (1) and portable bearing fault diagnostic instrument (2); Described vibration transducer (1) is fixedly mounted on tested rolling bearing (3) when using;
Portable bearing fault diagnostic instrument (2) is integrated part; Portable bearing fault diagnostic instrument (2) comprises housing and circuit arrangement; The circuit arrangement of portable bearing fault diagnostic instrument (2) comprises A/D modular converter (21), DSP data analysis module (22), ARM data processing module (23), memory module (24), display module (25) and power module (26);
A/D modular converter (21) and DSP data analysis module (22) are respectively equipped with signal input part and signal output part; ARM data processing module (23) is provided with analysis result signal input part, storing communication end and display output terminal; Memory module (24) is provided with communication ends; Display module (25) is provided with signal input part;
The signal input part of A/D modular converter (21) is electrically connected with vibration transducer (1) signal; The signal input part of DSP data analysis module (22) is electrically connected with the signal output part signal of A/D modular converter (21); The analysis result signal input part of ARM data processing module (23) is electrically connected with the signal output part signal of DSP data analysis module (22); The communication ends of memory module (24) is electrically connected with the storing communication end two-way signaling of ARM data processing module (23); The signal input part of display module (25) is electrically connected with the display output end signal of ARM data processing module (23); Power module (26) is for providing working power.
2. the portable rolling bearing fault diagnosis device based on vibration detection according to claim 1, is characterized in that: described vibration transducer (1) is KGS18 type Mine-used I. S vibration acceleration sensor.
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| CN201520040477.2U CN204346711U (en) | 2015-01-21 | 2015-01-21 | A kind of portable bearing fault diagnosing apparatus based on vibration detection |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556858A (en) * | 2017-09-26 | 2019-04-02 | 南京淳泰控制设备有限公司 | A kind of flywheel bearing unit running-in test equipment |
| CN110567721A (en) * | 2019-10-28 | 2019-12-13 | 齐鲁工业大学 | rolling bearing fault diagnosis method and system |
| CN112268703A (en) * | 2020-09-08 | 2021-01-26 | 安徽千禧精密轴承制造有限公司 | Mine ventilation machine bearing detecting system |
-
2015
- 2015-01-21 CN CN201520040477.2U patent/CN204346711U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556858A (en) * | 2017-09-26 | 2019-04-02 | 南京淳泰控制设备有限公司 | A kind of flywheel bearing unit running-in test equipment |
| CN110567721A (en) * | 2019-10-28 | 2019-12-13 | 齐鲁工业大学 | rolling bearing fault diagnosis method and system |
| CN110567721B (en) * | 2019-10-28 | 2021-08-17 | 齐鲁工业大学 | Rolling bearing fault diagnosis method and system |
| CN112268703A (en) * | 2020-09-08 | 2021-01-26 | 安徽千禧精密轴承制造有限公司 | Mine ventilation machine bearing detecting system |
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