CN104318851A - Rotating machinery fault simulation platform - Google Patents
Rotating machinery fault simulation platform Download PDFInfo
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- CN104318851A CN104318851A CN201410627748.4A CN201410627748A CN104318851A CN 104318851 A CN104318851 A CN 104318851A CN 201410627748 A CN201410627748 A CN 201410627748A CN 104318851 A CN104318851 A CN 104318851A
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
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- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/02—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery
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Abstract
The invention relates to a rotating machinery fault simulation platform. The simulation platform is a laboratory device for verification experiment and diagnosis experiment teaching of rotating machinery faults. The rotating machinery fault simulation platform comprises a sliding gear mechanism, a geneva wheel mechanism, a triple sliding gear mechanism, a lead screw nut mechanism and a combination mechanism formed by a worm gear and inner gearing incomplete gear. All the mechanisms are independent to one another, and power can be obtained through a gear pair formed by gears and power gears at the ends of the mechanisms. By means of the rotating machinery fault simulation platform, the problems that it is difficult to replace fault parts in the experiment process, and the experiment function is single and the teaching requirement cannot be met are mainly solved. The integrated building is conducted in combination with the teaching purpose, and the blank of rotating machinery type fault experiment in colleges and universities is filled; based on construction of machinery transmission and test devices of certain existing machinery type experiment platform, the reliability, practicability and usability of the novel rotating machinery fault simulation platform are improved beneficially, and the experiment platform is made to have good popularization value.
Description
Technical field
The invention belongs to electromechanical integration experiment field, be specifically related to a kind of detection platform of rotating machinery fault.The present invention relates to a kind of rotating machinery fault analog platform.
Background technology
Current domestic and international existing rotating machinery fault analog platform is applied in commercial production and scientific research substantially, and its cost is general higher.And all there is operation inconvenience in the rotating machinery fault analog platform that can be applied to teaching, the problem of using function limitation.
The analysis of rotating machinery fault is the important content in the courses such as China university Machine Design, equipment condition monitoring and fault diagnosis, and the simulated experiment of rotating machinery fault is also the one of national universities mechanical major Making Innovation Experiments.Based on the needs of teaching, we devise and can carry out for rotating machinery typical fault problem the Comprehensive Experimental Platform demonstrating and analyze.It can simulate axle system typical fault, bearing typical fault, gear typical fault.
But on existing classroom, teacher will use rotating machinery fault simulation experiment platform ubiquity the problem of following several respects: 1. need Tear Down Deficiency part continually, waste time and energy, and affects the normal progress of course; 2. related data shows, such use-pattern is easy to cause failed part to damage, and can not use; 3. enthusiasm may be lost because of loaded down with trivial details process during students hands-on; 4. experiment porch is only provided with the fault of single type, student can not go the feature understanding rotating machinery fault comparatively all sidedly.
Therefore, in order to realize the classroom instruction object of following 3: 1. teacher carries out rotating machinery fault analog demenstration easily, allow student have one to experience intuitively to rotating machinery fault; 2. student can use experiment table to carry out the replication experiment of rotating machinery quasi-representative fault, deepens the understanding to relative theory by experiment; 3. conventional method for diagnosing faults grasped by platform by experiment.We intend designing a novel rotating machinery fault analog platform.
Summary of the invention
Technical matters solved by the invention is: provide a kind of rotating machinery fault analog platform, to solve the single problem of current rotating machinery fault test experience platform feature.
The present invention solves its technical matters and adopts following technical scheme:
Rotating machinery fault analog platform provided by the invention, it comprises shifting slide gear mechanism, Geneva mechanism, three shifting slide gear mechanisms, screw-nut body, and the combined mechanism be made up of worm and gear and internal messing partial gear; Each mechanism is separate, forms gear pair obtain power by the gear of each mechanism end and power gear.
Described shifting slide gear mechanism, it makes the gear on alternating current generator engage with the input end gear of three fault simulation modules respectively by shifting slide gear mechanism, and for they provide power; Described three fault simulation modules are gear distress analog module, axle system fault simulation module, bearing fault simulation module respectively.
Described Geneva mechanism, it can carry out the switching of three kinds of faulty bearings and normal bearing, simulates the bearing fault of three types, dismounting difficult problem when faulty bearings so just can be avoided to change; The typical fault of bearing has inner ring spot corrosion, outer ring spot corrosion, retainer to damage.
Three described shifting slide gear mechanisms, it comprises a normal gear, a spot corrosion gear and a tooth surface abrasion gear, moved by fork controls three shifting slide gear and can make the left and right slippage on three shifting slide gear axles of this shift fork, respectively with the normal gear on another root axle, spot corrosion gear, tooth surface abrasion gears meshing.
Three described shifting slide gear mechanisms, it avoids the frequent dismounting of gear by the simulation of three kinds of gear operating modes, described three kinds of gear operating modes respectively: a pair normal gears meshing, a pair spot corrosion gears meshing, a pair tooth surface abrasion gears meshing.
The described combined mechanism be made up of worm and gear and internal messing partial gear, and screw-nut body, simulate axle system typical fault, avoid the disassemble and assemble work of part with this; Described typical fault comprises that angle misaligns, sound is uneven.
Described screw-nut body, its this widget of joint bolt nut achieves the simulation of static unbalance, regulates the slip of bolt and nut on disk mounting holes, thus on change axle, rotating circular disk balance mass carrys out the mass eccentricity of model rotor; Further, use the unbalance dynamic that two their spacings of rotating circular disk simulation are different, regulate the distance between two rotating circular disks by leading screw and nut mechanism, simulate the unbalance dynamic under multiple spacing.
The present invention compared with prior art has following major advantage:
The switching between various faults gear, various faults bearing is achieved respectively, the inconvenience that the dismounting avoiding them brings by shifting slide gear mechanism, Geneva mechanism;
The fault simulation utilizing the combined mechanism of worm and gear and internal messing partial gear to achieve angle to misalign, simultaneously ingenious to maintain in conjunction with worm and gear reverse self-locking characteristic the state that angle misaligns constant.
Use the mode of virtual instrument software to obtain experimental data, not only realize experimental data visual, also reduce cost, enhance the function of detection.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is Fig. 1 medium power module.
Fig. 3 is the schematic diagram of the axle system fault simulation module in Fig. 1.
Fig. 4 is the schematic diagram of the bearing fault simulation module in Fig. 1.
Fig. 5 is Fig. 4 left view.
Fig. 6 is the schematic diagram of the gear distress analog module in Fig. 1.
Fig. 7 is that the present invention is for detecting the schematic diagram of rotating machinery fault.
Fig. 8 is that the present invention is for detecting the process flow diagram of rotating machinery fault.
Fig. 9 is that the present invention is for detecting the Cleaning Principle process flow diagram of rotating machinery fault.
Figure 10 is the corresponding spectrum diagram of most common failure.
In figure: 1. power plant module; 1.1 AC motor; 1.2 shifting slide gear mechanisms; 2. axle system fault simulation module; 2.1 speed reduction unit; 2.2 set screw; 2.3 rotary disk; 2.4 worm and gear; 2.5 internal messing partial gears; 2.6 screw-nut body; 3. bearing fault simulation module; 3.1 normal bearings; 3.2-3.4 three faulty bearings; 3.5 Geneva mechanism; 4. gear distress analog module; 4.1 speed reduction unit; 4.2 3 shifting slide gear mechanisms; 4.3 normal gears; 4.4 spot corrosion gears; 4.5 tooth surface abrasion gears; 4.6 magnetic powder brake.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the invention will be further described.
Rotating machinery fault analog platform provided by the invention, its structure as shown in Figures 1 to 6, comprises shifting slide gear mechanism 1.2, the combined mechanism of worm and gear 2.4 and internal messing partial gear 2.5, screw-nut body 2.6, Geneva mechanism 3.5 and three shifting slide gear mechanisms 4.2 etc.Each mechanism above-mentioned is separate, and the gear pair formed by the shifting slide gear mechanism 1.2 on the gear of each module ends and power plant module obtains power.
Described shifting slide gear mechanism 1.2, it is engaged with the input end gear of three fault simulation modules respectively by the shifting slide gear on power plant module 1, makes AC motor 1.1 for they provide power; Such as, and by the speed reduction unit before each fault simulation module, the speed reduction unit 2.1 in axle system fault simulation module, reduces rotating speed, transmits power, increases torque.Described three fault simulation modules are axle system fault simulation module 2, bearing fault simulation module 3, gear distress analog module 4 respectively.
The combined mechanism of described worm and gear 2.4 and internal messing partial gear 2.5, the typical fault of its axle system has: angle misaligns, sound uneven.The present invention utilizes worm and gear 2.4 to carry out analog angle with the combined mechanism of internal messing partial gear 2.5 and misaligns fault, does not so just need to use pin and bolt and nut to locate, and avoids the part disassemble and assemble work of these location.Manually make worm screw rotate, drive worm gear wheel.The pinion rotation coaxial with worm gear, under the effect of internal messing incomplete gear mechanism, whole driven shaft part and main drive shaft define angle and misalign.Make use of the reverse self-locking characteristic of worm and gear simultaneously, driven shaft part can be realized and maintain angle condition of misalignment in fault simulation with when detecting, keep fixing.
Described screw-nut body 2.6, it achieves the simulation of static unbalance in conjunction with this widget of set screw 2.2, regulate the slip of set screw 2.2 on rotary disk 2.3 mounting hole, thus on change axle, rotary disk 2.3 balance mass carrys out the mass eccentricity (static unbalance) of model rotor; Further, two rotary disks 2.3 can be used to simulate the different unbalance dynamic of their spacing, regulate the distance between two rotating circular disks by leading screw and nut mechanism 2.6, simulate the unbalance dynamic under multiple spacing.
Described Geneva mechanism 3.5, it can carry out the switching of three kinds of faulty bearings bearing 3.2-3.4 and normal bearing 3.1, simulates the bearing fault of three types, dismounting difficult problem when faulty bearings so just can be avoided to change; The typical fault of bearing has inner ring spot corrosion, outer ring spot corrosion, retainer to damage.
Described three shifting slide gear mechanisms 4.2, it can realize the simulation of three kinds of gear operating modes, so just can avoid the frequent dismounting of gear; It is imported into the rotating speed of gear distress analog module by speed reduction unit 4.1 reduction and is increased torque; Its measurement of power carrying out gearing by magnetic powder brake 4.6 loads and braking.Described three kinds of gear operating modes refer to: operating mode 1 is a pair normal gears meshing; Operating mode 2 is a pair spot corrosion gears meshing; Operating mode 3 is a pair tooth surface abrasion gears meshing.This three shifting slide gears mechanism 4.2 comprises a normal gear, a spot corrosion gear and a tooth surface abrasion gear, moved by fork controls three shifting slide gear and can make its left and right slippage on axle, engage with the normal gear 4.3 on another root axle, spot corrosion gear 4.4, tooth surface abrasion gear 4.5 respectively.
Above-mentioned rotating machinery fault analog platform provided by the invention, its application in rotating machinery typical fault problem carries out demonstrating and analyze.Described rotating machinery typical fault type mainly divides 3 kinds: gear distress, axle system fault, bearing fault.
In described gear distress, common typical fault has: gear pitting corrosion and tooth surface abrasion.
In described axle system fault, common typical fault has: sound imbalance and angle misalign;
In described bearing fault, common typical fault has: inner ring spot corrosion, outer shroud spot corrosion, retainer damage and turbine being utilized.
Use this Novel rotary mechanical fault analog platform of the present invention's design, teacher can realize the analog demenstration of these fault types on laboratory, students by touching, listen sound, observe the various modes such as sensor data measured at computer display interface and set up the contrast of phenomenon when a certain fault of rotating machinery is occurred the visual understanding of rotatory mechanical system impact and existed by normal phenomenon and fault and more can be familiar with the extent of injury and the feature of clear various fault, and the replication experiment of rotating machinery fault and the diagnostic test of fault can be carried out.
The present invention can adopt detection module and supporting detection mode to realize above-mentioned functions.
One. detection module
Rotating machinery fault analog platform is divided into the detection module of three types fault, so, need to be respectively them and power is provided, its scheme is: the gears meshing being realized shifting slide gear and three fault detection module power intake places by shifting slide gear mechanism 1.2, can be respectively them and provide power.
1. gear distress analog module:
Three gears adopting three shifting slide gear mechanism 4.2, three shifting slide gears are normal gear, spot corrosion gear, tooth surface abrasion gear respectively.Can engage with normal gear 4.3, spot corrosion gear 4.4, tooth surface abrasion gear 4.5 respectively with it, a pair normal gear, a pair spot corrosion gear, a pair these three kinds of operating mode of tooth surface abrasion gear can be simulated.
2. axle system fault simulation module:
The unbalanced analog form of sound is: rely on and regulate set screw 2.2 on rotary disk 2.3 rotor to slide on its hole slot, simulation static unbalance; Rely on two above-mentioned rotary disks and screw-nut body 2.6, simulate the unbalance dynamic situation of two disc rotors under different distance.The analog form that angle misaligns is then: drive universal coupling right part with position, universal coupling center for the center of circle by worm and gear 2.4 and the combined mechanism of internal messing partial gear 2.5, thus driven shaft and main drive shaft angulation misalign, the reverse self-locking characteristic of worm and gear 2.4 can ensure that the state that maintenance angle misaligns when fault simulation is constant simultaneously.
3. bearing fault simulation module:
The analog form of fault is: utilize Geneva mechanism 3.5 to realize the switching of normal bearing 3.1 and three faulty bearings 3.2-3.4.The simulation of turbine being utilized can adopt the mode of loose bolts to realize.
Two. detection mode
1. Cleaning Principle:
As shown in Figure 8, the present invention builds detection module described on Fig. 8.It is made up of piezoelectric acceleration transducer, transistor amplifier, data collecting card, virtual instrument software.First vibration signal can be obtained at the corresponding detection position of each fault simulation module respectively by piezoelectric acceleration transducer, the charge signal of the high impedance obtained by sensor via transistor amplifier transfers low-impedance voltage signal to, analog signals can be changed into digital quantity signal by Usage data collection card again, send into the virtual instrument software analyzing and processing with labview software programming.
2. the design of detection mode:
As shown in Figure 8, piezoelectric acceleration transducer is relied on to obtain vibration signal, high impedance charge signal is transferred to voltage signal in low impedance via transistor amplifier, the conversion of analog quantity and digital quantity is carried out again through data collecting card, can send into by the virtual instrument software Treatment Analysis that labview finishes in computer equipment, observation experiment phenomenon.
3.. detection mode flow process:
As shown in Figure 9, the replication experiment function of rotating machinery typical fault and the diagnostic function of rotating machinery fault is comprised.
(1) the replication experiment function of rotating machinery typical fault:
By switching mechanism and detection module, the data finally shown in computer virtual instrument software can be observed and carry out there is the replication experiment about all kinds of fault conclusion.
(2) diagnostic function of rotating machinery fault:
The method of learning and mastering common fault diagnosis diagnoses the type, position etc. of the fault of generation.Spectrogram as observable vibration carries out the judgement of fault type.
Being designed with of virtual instrument detection mode is beneficial to reduction experiment porch cost, improves economy, and makes function more complete.Student can carry laptop devices or the computer equipment that provided by school can carry out the simulation of rotating machinery typical fault on experiment porch, carries out the replication experiment of being correlated with and diagnostic test.Go by experiment comparatively to be all sidedly familiar with rotating machinery fault, the study of Auxiliary Principle knowledge.
Table 1 replication experiment contents table
Claims (7)
1. a rotating machinery fault analog platform, is characterized in that comprising shifting slide gear mechanism, Geneva mechanism, three shifting slide gear mechanisms, screw-nut body, and the combined mechanism be made up of worm and gear and internal messing partial gear; Each mechanism is separate, forms gear pair obtain power by the gear of each mechanism end and power gear.
2. rotating machinery fault analog platform according to claim 1, it is characterized in that described shifting slide gear mechanism, it makes the gear on alternating current generator engage with the input end gear of three fault simulation modules respectively by shifting slide gear mechanism, and for they provide power; Described three fault simulation modules are gear distress analog module, axle system fault simulation module, bearing fault simulation module respectively.
3. rotating machinery fault analog platform according to claim 1, it is characterized in that described Geneva mechanism, it passes through the switching of three kinds of faulty bearings and normal bearing, simulates the bearing fault of three types, dismounting difficult problem when faulty bearings so just can be avoided to change; The typical fault of bearing has inner ring spot corrosion, outer ring spot corrosion, retainer to damage.
4. rotating machinery fault analog platform according to claim 1, it is characterized in that described three shifting slide gear mechanisms, comprise a normal gear, a spot corrosion gear and a tooth surface abrasion gear, moved by fork controls three shifting slide gear and can make the left and right slippage on three shifting slide gear axles of this shift fork, respectively with the normal gear on another root axle, spot corrosion gear, tooth surface abrasion gears meshing.
5. rotating machinery fault analog platform according to claim 3, it is characterized in that described three shifting slide gear mechanisms, it avoids the frequent dismounting of gear by the simulation of three kinds of gear operating modes, described three kinds of gear operating modes respectively: a pair normal gears meshing, a pair spot corrosion gears meshing, a pair tooth surface abrasion gears meshing.
6. rotating machinery fault analog platform according to claim 1, it is characterized in that the described combined mechanism be made up of worm and gear and internal messing partial gear, and screw-nut body, simulate axle system typical fault, avoid the disassemble and assemble work of part with this; Described typical fault comprises that angle misaligns, sound is uneven.
7. rotating machinery fault analog platform according to claim 1, it is characterized in that described screw-nut body, its this widget of joint bolt nut achieves the simulation of static unbalance, regulate the slip of bolt and nut on disk mounting holes, thus on change axle, rotating circular disk balance mass carrys out the mass eccentricity of model rotor; Further, use the unbalance dynamic that two their spacings of rotating circular disk simulation are different, regulate the distance between two rotating circular disks by leading screw and nut mechanism, simulate the unbalance dynamic under multiple spacing.
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| CN201410627748.4A CN104318851B (en) | 2014-11-10 | 2014-11-10 | Rotating machinery fault analog platform |
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| CN201410627748.4A CN104318851B (en) | 2014-11-10 | 2014-11-10 | Rotating machinery fault analog platform |
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| CN104318851A true CN104318851A (en) | 2015-01-28 |
| CN104318851B CN104318851B (en) | 2016-09-14 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105277358A (en) * | 2015-11-27 | 2016-01-27 | 长安大学 | Force-taking power testing platform of paver spiral distributor and using method thereof |
| CN107314893A (en) * | 2017-05-08 | 2017-11-03 | 上海交通大学 | A kind of modular multi-function rotor testbed |
| CN110595766A (en) * | 2019-08-30 | 2019-12-20 | 天津工业大学 | Gear drive system axis misalignment fault simulation experiment table |
| CN110595773A (en) * | 2019-11-01 | 2019-12-20 | 浙江倍时信息科技有限公司 | Mechanical multi-fault real-time simulation device |
| CN110595767A (en) * | 2019-08-30 | 2019-12-20 | 天津工业大学 | Gear drive system fault simulation experiment table capable of rapidly replacing parts |
| CN113049958A (en) * | 2021-04-13 | 2021-06-29 | 天津大学 | Motor fault diagnosis simulation experiment table and diagnosis method based on ADXL335 and deep learning |
| CN113050599A (en) * | 2021-03-16 | 2021-06-29 | 中国人民解放军国防科技大学 | Fault diagnosis test bed for electromechanical actuator |
| CN113990140A (en) * | 2021-11-09 | 2022-01-28 | 武汉理工大学 | Fault simulation system of rotating machinery |
| CN115343040A (en) * | 2022-09-20 | 2022-11-15 | 北京理工大学 | Transmission fault detection structure |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105277358A (en) * | 2015-11-27 | 2016-01-27 | 长安大学 | Force-taking power testing platform of paver spiral distributor and using method thereof |
| CN107314893A (en) * | 2017-05-08 | 2017-11-03 | 上海交通大学 | A kind of modular multi-function rotor testbed |
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| CN113050599A (en) * | 2021-03-16 | 2021-06-29 | 中国人民解放军国防科技大学 | Fault diagnosis test bed for electromechanical actuator |
| CN113049958A (en) * | 2021-04-13 | 2021-06-29 | 天津大学 | Motor fault diagnosis simulation experiment table and diagnosis method based on ADXL335 and deep learning |
| CN113990140A (en) * | 2021-11-09 | 2022-01-28 | 武汉理工大学 | Fault simulation system of rotating machinery |
| CN113990140B (en) * | 2021-11-09 | 2024-06-25 | 武汉理工大学 | Fault simulation system of rotary machine |
| CN115343040A (en) * | 2022-09-20 | 2022-11-15 | 北京理工大学 | Transmission fault detection structure |
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