CN103837342B - A kind of nonlinear gear system vibrating failure diagnosis experiment porch - Google Patents
A kind of nonlinear gear system vibrating failure diagnosis experiment porch Download PDFInfo
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- CN103837342B CN103837342B CN201410083034.1A CN201410083034A CN103837342B CN 103837342 B CN103837342 B CN 103837342B CN 201410083034 A CN201410083034 A CN 201410083034A CN 103837342 B CN103837342 B CN 103837342B
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Abstract
The invention provides a kind of nonlinear gear system vibrating failure diagnosis experiment porch, for gear vibration fault diagnosis technology field. Two gears of experiment porch middle gear decelerator, with cantilever design form, connect power shaft and output shaft respectively; Power shaft and output shaft all have bearing at regular intervals by two or more and are fixed on bearing block; Output shaft is connected with load servomotor by belt; Bearing block is provided with vibrating sensor; Vibrating sensor and signal amplifier electrical connection, the signal that signal amplifier amplifies sends signal processing computer to through data collecting card; Servomotor and load servomotor is driven all to carry out parameter setting and status monitoring by corresponding controller and man machine interface. Vibration interference of the present invention is little, and gear disassembling is convenient, loaded can gear accurately be loaded by servomotor, it is to avoid vibration that mechanical load is brought and unloaded time gear bat shake phenomenon, and simple in construction.
Description
Technical field
The invention belongs to gear vibration fault diagnosis technology field, be specifically related to a kind of nonlinear gear system vibrating failure diagnosis experiment porch.
Background technology
In a lot of visual plants, Large-Scale Equipment, there is gear drive. Gear is in running, due to the effect outwardly and inwardly encouraged, and produces vibration. Owing to there is friction, gap and time-varying rigidity, gear vibration shows nonlinear feature. Effective fault diagnosis of gear is the important leverage of drive system safe operation. Many scholars are devoted to the algorithm research of Gear Fault Diagnosis particularly non-linear fault diagnosis always. Suitable experiment porch is most important for the algorithm research carrying out being correlated with. Current experiment porch is primarily present two problems: one is that loading system is complicated, as machinery weight type loads, is inherently attended by vibration; Two is that more gear changing bothers, and bearing mostly is simply supported beam supporting way, more inevitable requirement dismounting bearing during gear changing, and the dismounting of bearing will change original vibration environment. Accordingly, it would be desirable to a kind of easy for installation, and avoid the experiment porch of vibration that mechanical load brings, test for nonlinear gear system vibrating failure diagnosis.
Summary of the invention
The present invention is directed to current laboratory table common problem, it is proposed to a kind of nonlinear gear system vibrating failure diagnosis experiment porch, gear is accurately loaded by vibration realizing that mechanical load brings to adopt servomotor load mode to avoid, and simple in construction; The mounting means of bearing cantilever beam avoids the dismounting to bearing.
Nonlinear gear system vibrating failure diagnosis experiment porch provided by the invention, including following ingredient: experiment porch stage body, man machine interface, driving servomotor controller, load servomotor controller, power shaft vibrating sensor, output shaft vibrating sensor, signal amplifier, data collecting card and signal processing computer. Wherein, experiment porch stage body includes driving servomotor, shaft coupling, power shaft, bearing of input shaft seat, gear reduction unit, output shaft, output shaft bearing seat, belt and load servomotor. Described gear reduction unit includes the gear wheel that is meshed and little gear.
Described driving servomotor is connected with power shaft by shaft coupling, and power shaft connects the little gear of gear reduction unit, and the gear wheel of gear reduction unit connects output shaft, and output shaft is connected with load servomotor by belt. Belt carries out transmission by being arranged on the belt wheel of output shaft and load servomotor.
Described man machine interface is electrically connected with driving servomotor controller, load servomotor controller respectively, for controlling to drive start and stop and the rotating speed of servomotor, and arranges the size of load servomotor load. Drive servomotor controller and be electrically connected with driving servomotor. Load servomotor controller and load servomotor are electrically connected.
The little gear of described gear reduction unit and power shaft are fixed and are connected, and power shaft is fixed on bearing of input shaft seat by bearing; Gear wheel and output shaft are fixed and are connected, and output shaft is fixed on output shaft bearing seat by bearing. Power shaft and output shaft all arrange two or more tool bearing at regular intervals and fix.
Bearing of input shaft seat is provided with power shaft vibrating sensor, output shaft bearing seat is provided with output shaft vibrating sensor. Signal amplifier is electrically connected with power shaft vibrating sensor and output shaft vibrating sensor respectively, and the amplification signal of signal amplifier passes to signal processing computer by data collecting card.
Power shaft vibrating sensor and output shaft vibrating sensor are fitted with more than one, arrange power shaft vibrating sensor on bearing of input shaft seat different directions, arrange output shaft vibrating sensor on output shaft bearing seat different directions.
The nonlinear gear system vibrating failure diagnosis experiment porch of the present invention, hinge structure has the advantage that and good effect:
(1) mounting means installing selection cantilever of the gear of the present invention, power shaft and output shaft as cantilever all have bearing at regular intervals by two or more and fix, compared with bearing-gear-bearing arrangement commonly used at present, this structure has the features such as vibration interference is little, gear disassembling is convenient; And two or more tools bearing at regular intervals fixed effect is better.
(2) adopt man machine interface by driving servomotor controller to control to drive start and stop and the rotating speed of servomotor; Adopt man machine interface to control the load of load servomotor by load servomotor controller, conveniently gear is loaded. Loaded by servomotor and realize the precise load of gear is loaded, it is to avoid when vibration that mechanical load is brought and zero load, the bat of gear is shaken phenomenon, and simple in construction.
(3) power shaft vibrating sensor and output shaft vibrating sensor can be arranged on multiple directions installation as required, for the vibration of prototype gear different directions. During gear distress, the frictional behavior of gear and mesh stiffness tool have a greater change, the non-linear behavior of fault-signal is obvious, the non-linear vibratory signal of the input of gear reduction unit, output shaft is carried out data acquisition and procession, it is simple to carry out the algorithm development and validation of nonlinear gear system fault diagnosis. Further, the vibration signal collected, carry out display directly perceived by the software of signal processing computer and fault diagnosis algorithm processes, facilitate fault diagnosis algorithm research and checking.
Accompanying drawing explanation
Fig. 1 is the structure chart of a kind of nonlinear gear system vibrating failure diagnosis experiment porch in the embodiment of the present invention;
Fig. 2 is the schematic diagram that the power shaft connecting little gear in the embodiment of the present invention is fixed by bearing.
In figure:
1. power shaft vibrating sensor; 2. signal amplifier; 3. output shaft vibrating sensor; 4. data collecting card; 5. signal processing computer; 6. load servomotor controller; 7. drive servomotor controller; 8. man machine interface; 9. drive servomotor; 10. shaft coupling; 11. bearing of input shaft seat; 12. gear wheel; 13. power shaft; 14. little gear; 15. output shaft bearing seat; 16 output shafts; 17. belt; 18. load servomotor; 19. bearing.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.
It is an object of the invention to design a kind of nonlinear gear system vibrating failure diagnosis experiment porch, gear drive can be loaded, convenient gear is arranged fault and more gear changing, fault gear vibration signal under different loads is detected by vibrating sensor, and the signal detected is analyzed, thus gear distress is carried out algorithm research and checking.
A kind of nonlinear gear system vibrating failure diagnosis experiment porch provided by the invention, as it is shown in figure 1, include: power shaft vibrating sensor 1; Signal amplifier 2; Output shaft vibrating sensor 3; Data collecting card 4; Signal processing computer 5; Load servomotor controller 6; Drive servomotor controller 7; Man machine interface 8; And experiment porch stage body.
Described experiment porch stage body includes: drive servomotor 9, shaft coupling 10, bearing of input shaft seat 11, gear wheel 12, power shaft 13, little gear 14, output shaft bearing seat 15, output shaft 16, belt 17 and load servomotor 18. Gear wheel 12 and little gear 14 are a pair gears of gear reduction unit. Driving servomotor 9 to connect power shaft 13 one end by shaft coupling 10, the other end of power shaft 13 connects the little gear 14 of gear reduction unit. The little gear 14 of gear reduction unit engages with gear wheel 12. Gear wheel 12 connects one end of output shaft 16, and the other end of output shaft 16 is connected with load servomotor 18 by belt 17. Belt 17 carries out transmission by being arranged on the belt wheel of output shaft 16 and load servomotor 18. Output shaft 16 and load servomotor 18 adopt belt transmission to be conducive to eliminating load servomotor 18 further and export the impact of torque ripple.
Gear wheel 12 and little gear 14 adopt cantilever design to arrange. Power shaft 13 as the cantilever of little gear 14, output shaft 16 as the cantilever of gear wheel 12, gear wheel 12 and and little gear 14 be meshed. As in figure 2 it is shown, little gear 14 and the fixing connection of power shaft 13, power shaft 13 is fixed on bearing of input shaft seat 11 by bearing 19. Equally, gear wheel 12 and output shaft 16 are fixed and are connected, and output shaft 16 is fixed on output shaft bearing seat 15 by bearing 19. The present invention adopts two or more to have bearing 19 at regular intervals for power shaft 13 and output shaft 16 and is fixed. As in figure 2 it is shown, schematic diagram power shaft 13 being fixed for two bearings 19 of employing. The cantilever design adopted by a pair gear of gear reduction unit is arranged, it is achieved that more gear changing is convenient. Bearing of input shaft seat 11 and output shaft bearing seat 15 are fitted with two or more and have bearing at regular intervals, secure power shaft 13 and output shaft 16, the gear avoiding power shaft 13 and output shaft 16 and its connection swings, the two or more that the present invention adopts has bearing cantilever mounted at regular intervals, the structure of relatively existing double or multiple rows of bearing, has better fixed effect.
Man machine interface 8 is electrically connected with driving servomotor controller 7, load servomotor controller 6 respectively, for controlling to drive start and stop and the rotating speed of servomotor 9, and arranges the load of load servomotor 18. Driving servomotor controller 7 and be electrically connected with driving servomotor 9, load servomotor controller 6 and load servomotor 18 are electrically connected.
Load servomotor controller 6 controls the gear that load servomotor 18 is laboratory table provides load.
As it is shown in figure 1, bearing of input shaft seat 11 and output shaft bearing seat 15 are provided with the erecting device of vibrating sensor. And according to requirement of experiment, vibrating sensor can be installed in the multiple directions of bearing block, for the vibration of prototype gear different directions. Bearing of input shaft seat 11 is provided with power shaft vibrating sensor 1, output shaft bearing seat 15 is provided with output shaft vibrating sensor 3. Signal amplifier 2 is electrically connected with power shaft vibrating sensor 1 and output shaft vibrating sensor 3 respectively, and the amplification signal of signal amplifier 2 passes to signal processing computer 5 by data collecting card 4. Power shaft vibrating sensor 1 and output shaft vibrating sensor 3 gather vibration signal and are sent to signal amplifier 2, the signal of collection is amplify and pass to data collecting card 4 by signal amplifier 2, it is sent to signal processing computer 5 by data collecting card 4, utilizes the signal of collection to carry out fault diagnosis research in signal processing computer 5.
The work process adopting the nonlinear gear system vibrating failure diagnosis experiment porch of the present invention is as follows:
First, by driving servomotor controller 7 to arrange driving servomotor 9 for velocity mode, by load servomotor controller 6, load servomotor 18 is set for torque mode. And the rotating speed driving servomotor 9 is set by man machine interface 8, the load of load servomotor 18 is set. Then, driving servomotor 9 is started. Now, by driving the display module of servomotor controller 7 it can be seen that drive the current rotating speed size of servomotor 9, by the display module of load servomotor controller 6 it can be seen that the current moment size of load servomotor 18, rotating speed and moment are using ambient parameter during as Gear Fault Diagnosis vibration signal processing. The signal that power shaft vibrating sensor 1 and output shaft vibrating sensor 3 gather is through signal amplifier 2, send data collecting card 4 to, and pass in signal processing computer 5, the nonlinear gear system vibrating failure diagnosis algorithm research being correlated with is carried out, in order to determine fault signature at signal processing computer 5.
The nonlinear gear system vibrating failure diagnosis experiment porch of the present invention, when needs more gear changing, directly little gear 14 or gear wheel 12 are taken off, without dismantling the bearing in bearing of input shaft seat 11 or output shaft bearing seat 15, maintain gear to greatest extent and change the vibration environment of front and back, significant for checking Gear Fault Diagnosis algorithm.
Claims (1)
1. a nonlinear gear system vibrating failure diagnosis experiment porch, it is characterized in that, including following ingredient: experiment porch stage body, man machine interface, driving servomotor controller, load servomotor controller, power shaft vibrating sensor, output shaft vibrating sensor, signal amplifier, data collecting card and signal processing computer; Described experiment porch stage body includes driving servomotor, shaft coupling, power shaft, bearing of input shaft seat, gear reduction unit, output shaft, output shaft bearing seat, belt and load servomotor; Described gear reduction unit includes the gear wheel that is meshed and little gear;
Servomotor is driven to be connected with power shaft by shaft coupling, power shaft connects the little gear of gear reduction unit, the gear wheel of gear reduction unit connects output shaft, and output shaft is connected with load servomotor by belt, and belt carries out transmission by being arranged on the belt wheel of output shaft and load servomotor; Man machine interface is electrically connected with driving servomotor controller, load servomotor controller respectively, for controlling to drive start and stop and the rotating speed of servomotor, and arranges the load of load servomotor; Load servomotor controller and load servomotor are electrically connected; Drive servomotor controller and be electrically connected with driving servomotor;
Gear wheel and little gear adopt cantilever design to arrange, power shaft is as the cantilever of little gear, and output shaft is the cantilever of gear wheel; When needs more gear changing, directly little gear or gear wheel are taken off, it is not necessary to the bearing in dismounting bearing of input shaft seat or output shaft bearing seat; The little gear of gear reduction unit and power shaft are fixed and are connected, and power shaft is fixed on bearing of input shaft seat by bearing; The gear wheel of gear reduction unit and output shaft are fixed and are connected, and output shaft is fixed on output shaft bearing seat by bearing; Power shaft and output shaft all arrange two or more tool bearing at regular intervals and fix;
Bearing of input shaft seat is provided with power shaft vibrating sensor, output shaft bearing seat is provided with output shaft vibrating sensor; Power shaft vibrating sensor and output shaft vibrating sensor are fitted with more than one, and power shaft vibrating sensor is arranged on bearing of input shaft seat different directions, and output shaft vibrating sensor is arranged on output shaft bearing seat different directions; Signal amplifier is electrically connected with power shaft vibrating sensor and output shaft vibrating sensor respectively, and the amplification signal of signal amplifier passes to signal processing computer by data collecting card.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410083034.1A CN103837342B (en) | 2014-03-07 | 2014-03-07 | A kind of nonlinear gear system vibrating failure diagnosis experiment porch |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410083034.1A CN103837342B (en) | 2014-03-07 | 2014-03-07 | A kind of nonlinear gear system vibrating failure diagnosis experiment porch |
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| CN103837342A CN103837342A (en) | 2014-06-04 |
| CN103837342B true CN103837342B (en) | 2016-06-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105606361B (en) * | 2016-01-28 | 2019-02-19 | 上海交通大学 | Adjustable clearance experiment porch |
| CN108167429A (en) * | 2017-12-25 | 2018-06-15 | 中北大学 | A kind of failure detector for gear-box |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4159642A (en) * | 1978-03-02 | 1979-07-03 | Avco Corporation | Aircraft transmission test set |
| JP3673689B2 (en) * | 2000-02-29 | 2005-07-20 | 独立行政法人科学技術振興機構 | Gear dynamic performance evaluation system and evaluation method |
| CN101576438B (en) * | 2009-06-02 | 2011-06-01 | 西安交通大学 | Bearing-gear multi-fault coupled simulation experiment table |
| CN101725706B (en) * | 2009-12-31 | 2011-07-27 | 中国人民解放军国防科学技术大学 | Embedded-type condition monitoring and fault diagnosis system of gear cases |
| CN202511969U (en) * | 2012-04-23 | 2012-10-31 | 长安大学 | Device for diagnosing faults of gearbox |
| CN202693304U (en) * | 2012-07-20 | 2013-01-23 | 华南理工大学 | Gear fault diagnosis platform |
| CN102967459B (en) * | 2012-12-03 | 2015-07-08 | 中国计量学院 | Simulated experiment system for fault of rotary machine |
| CN102996720B (en) * | 2012-12-27 | 2015-03-11 | 北京林业大学 | Multifunctional fault diagnosis gear box for gears |
| CN103604604A (en) * | 2013-12-02 | 2014-02-26 | 清华大学 | Device for fault simulation of gear transmission case of wind turbine |
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