CN103837342A - Diagnosing experiment platform for non-linear vibration fault of gears - Google Patents
Diagnosing experiment platform for non-linear vibration fault of gears Download PDFInfo
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- CN103837342A CN103837342A CN201410083034.1A CN201410083034A CN103837342A CN 103837342 A CN103837342 A CN 103837342A CN 201410083034 A CN201410083034 A CN 201410083034A CN 103837342 A CN103837342 A CN 103837342A
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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
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, in operational process, owing to being subject to the effect of outside and internal motivation, and produces vibration.Owing to existing friction, gap to become in time rigidity, gear vibration shows nonlinear feature.Effective fault diagnosis of gear is the important leverage of kinematic train safe operation.Many scholars are devoted to the particularly algorithm research of non-linear fault diagnosis of Gear Fault Diagnosis always.Suitable experiment porch is most important for carrying out relevant algorithm research.Mainly there are two problems in current experiment porch: the one, and loading system complexity, as mechanical weight type loads, itself is just attended by vibration; The 2nd, more gear changing trouble, bearing mostly is free beam supporting way, more inevitable requirement dismounting bearing when gear changing, and the dismounting of bearing will change original vibration environment.Therefore, need a kind of easy for installationly, and avoid the experiment porch of the vibration that mechanical load brings, test for nonlinear gear system vibrating failure diagnosis.
Summary of the invention
The present invention is directed to the ubiquitous problem of current experiment table, propose a kind of nonlinear gear system vibrating failure diagnosis experiment porch, the vibration realizing that adopts servomotor load mode to avoid mechanical load to bring accurately loads gear, and simple in structure; The mounting means of bearing semi-girder has been avoided the dismounting to bearing.
Nonlinear gear system vibrating failure diagnosis experiment porch provided by the invention, comprises following ingredient: experiment porch stage body, man-machine interface, driving servomotor controller, load servomotor controller, input shaft vibration transducer, output shaft vibration transducer, signal amplifier, data collecting card and signal process computer.Wherein, experiment porch stage body comprises driving servomotor, shaft coupling, input shaft, bearing of input shaft seat, gear reducer, output shaft, output shaft bearing seat, belt and load servomotor.Described gear reducer comprises the gear wheel and the pinion wheel that are meshed.
Described driving servomotor is connected with input shaft by shaft coupling, the pinion wheel of input shaft connection teeth wheel decelerator, and the gear wheel of gear reducer connects output shaft, and output shaft is connected with load servomotor by belt.Belt carries out transmission by the belt wheel that is arranged on output shaft and load servomotor.
Described man-machine interface is electrically connected with driving servomotor controller, load servomotor controller respectively, for controlling the start and stop and the rotating speed that drive servomotor, and the size of load servomotor load is set.Drive servomotor controller to be electrically connected with driving servomotor.Load servomotor controller and load servomotor are electrically connected.
The pinion wheel of described gear reducer is fixedly connected with input shaft, and input shaft is fixed on bearing of input shaft seat by bearing; Gear wheel is fixedly connected with output shaft, and output shaft is fixed on output shaft bearing seat by bearing.Input shaft and output shaft all arrange more than two tool bearing at regular intervals and fix.
Input shaft vibration transducer is installed on bearing of input shaft seat, output shaft vibration transducer is installed on output shaft bearing seat.Signal amplifier is electrically connected with input shaft vibration transducer and output shaft vibration transducer respectively, and the amplifying signal of signal amplifier passes to signal process computer by data collecting card.
Input shaft vibration transducer and output shaft vibration transducer are all provided with more than one, on bearing of input shaft seat different directions, arrange input shaft vibration transducer, on output shaft bearing seat different directions, arrange output shaft vibration transducer.
Nonlinear gear system vibrating failure diagnosis experiment porch of the present invention, prior art tool has the following advantages and good effect relatively:
(1) mounting means of cantilever is selected in the installation of gear of the present invention, input shaft and output shaft as cantilever are all fixed by more than two tool bearing at regular intervals, compared with the bearing-gear-bearing arrangement generally adopting at present, this structure has the features such as vibration interference is little, gear disassembling is convenient; And two or more tools bearing fixed effect at regular intervals is better.
(2) adopt man-machine interface by driving servomotor controller control to drive start and stop and the rotating speed of servomotor; Adopt man-machine interface by the load of load servomotor controller control load servomotor, conveniently gear is loaded.Load to realize by servomotor the precise load of gear is loaded, avoided vibration that mechanical load brings and the bat of the gear phenomenon of shaking when unloaded, and simple in structure.
(3) input shaft vibration transducer and output shaft vibration transducer can be arranged on multiple directions installation as required, for the vibration of prototype gear different directions.When gear distress, the rubbing characteristics of gear and mesh stiffness tool have a greater change, the non-linear feature of fault-signal is obvious, input to gear reducer, the non-linear vibratory signal of output shaft are carried out data acquisition and processing, are convenient to carry out algorithm research and the checking of nonlinear gear system fault diagnosis.And the vibration signal collecting, carries out directly perceived demonstration and fault diagnosis algorithm processing by the software of signal process computer, facilitates fault diagnosis algorithm research and checking.
Brief description of the drawings
Fig. 1 is the structural drawing of a kind of nonlinear gear system vibrating failure diagnosis experiment porch in the embodiment of the present invention;
Fig. 2 connects the input shaft of pinion wheel by the fixing schematic diagram of bearing in the embodiment of the present invention.
In figure:
1. input shaft vibration transducer; 2. signal amplifier; 3. output shaft vibration transducer; 4. data collecting card; 5. signal process computer; 6. load servomotor controller; 7. drive servomotor controller; 8. man-machine interface; 9. drive servomotor; 10. shaft coupling; 11. bearing of input shaft seats; 12. gear wheels; 13. input shafts; 14. pinion wheels; 15. output shaft bearing seats; 16 output shafts; 17. belts; 18. load servomotors; 19. bearings.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
The object of the invention is to design a kind of nonlinear gear system vibrating failure diagnosis experiment porch, can load gear drive, convenient gear is arranged to fault and gear changing more, vibration signal by vibration transducer detection failure gear under different loads, and detected signal is analyzed, thereby gear distress is carried out to algorithm research and checking.
A kind of nonlinear gear system vibrating failure diagnosis experiment porch provided by the invention, as shown in Figure 1, comprising: input shaft vibration transducer 1; Signal amplifier 2; Output shaft vibration transducer 3; Data collecting card 4; Signal process 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, input shaft 13, pinion wheel 14, output shaft bearing seat 15, output shaft 16, belt 17 and load servomotor 18.Gear wheel 12 and pinion wheel 14 are a pair of gears of gear reducer.Drive servomotor 9 to connect input shaft 13 one end by shaft coupling 10, the pinion wheel 14 of the other end connection teeth wheel decelerator of input shaft 13.The pinion wheel 14 of gear reducer 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 the belt wheel that is arranged on output shaft 16 and load servomotor 18.Output shaft 16 and load servomotor 18 adopt belt gear to be conducive to further eliminate the impact of load servomotor 18 output torque fluctuations.
Man-machine interface 8 is electrically connected with driving servomotor controller 7, load servomotor controller 6 respectively, for controlling the start and stop and the rotating speed that drive servomotor 9, and the load of load servomotor 18 is set.Drive servomotor controller 7 to be electrically connected with driving servomotor 9, load servomotor controller 6 is electrically connected with load servomotor 18.
The gear that load servomotor controller 6 control load servomotors 18 are experiment table provides load.
As shown in Figure 1, on bearing of input shaft seat 11 and output shaft bearing seat 15, be provided with the erecting device of vibration transducer.And according to requirement of experiment, can in the multiple directions of bearing seat, vibration transducer be installed, for the vibration of prototype gear different directions.Input shaft vibration transducer 1 is installed on bearing of input shaft seat 11, output shaft vibration transducer 3 is installed on output shaft bearing seat 15.Signal amplifier 2 is electrically connected with input shaft vibration transducer 1 and output shaft vibration transducer 3 respectively, and the amplifying signal of signal amplifier 2 passes to signal process computer 5 by data collecting card 4.Input shaft vibration transducer 1 and output shaft vibration transducer 3 gather vibration signal and send to signal amplifier 2, signal amplifier 2 amplifies the signal of collection and is sent to data collecting card 4, be sent to signal process computer 5 by data collecting card 4, in signal process computer 5, utilize the signal gathering to carry out fault diagnosis research.
Adopt the course of work of nonlinear gear system vibrating failure diagnosis experiment porch of the present invention as follows:
First, drive servomotor 9 for velocity mode by driving servomotor controller 7 to arrange, load servomotor 18 is set for torque mode by load servomotor controller 6.And the rotating speed that drives servomotor 9 is set by man-machine interface 8, the load of load servomotor 18 is set.Then, start and drive servomotor 9.Now, drive the current rotating speed size of servomotor 9 by driving the display module of servomotor controller 7 to see, can see by the display module of load servomotor controller 6 the moment size that load servomotor 18 is current, rotating speed and the moment environmental parameter when as Gear Fault Diagnosis vibration signal processing.The signal that input shaft vibration transducer 1 and output shaft vibration transducer 3 gather is through signal amplifier 2, send data collecting card 4 to, and pass in signal process computer 5, carry out relevant nonlinear gear system vibrating failure diagnosis algorithm research at signal process computer 5, to determine fault signature.
Nonlinear gear system vibrating failure diagnosis experiment porch of the present invention, at needs more when gear changing, directly pinion wheel 14 or gear wheel 12 are taken off, without the bearing in dismounting bearing of input shaft seat 11 or output shaft bearing seat 15, keep to greatest extent gear to change the vibration environment of front and back, significant for checking Gear Fault Diagnosis algorithm.
Claims (2)
1. a nonlinear gear system vibrating failure diagnosis experiment porch, it is characterized in that, comprise following ingredient: experiment porch stage body, man-machine interface, driving servomotor controller, load servomotor controller, input shaft vibration transducer, output shaft vibration transducer, signal amplifier, data collecting card and signal process computer; Described experiment porch stage body comprises driving servomotor, shaft coupling, input shaft, bearing of input shaft seat, gear reducer, output shaft, output shaft bearing seat, belt and load servomotor; Described gear reducer comprises the gear wheel and the pinion wheel that are meshed;
Drive servomotor to be connected with input shaft by shaft coupling, the pinion wheel of input shaft connection teeth wheel decelerator, the gear wheel of gear reducer connects output shaft, and output shaft is connected with load servomotor by belt, and belt carries out transmission by the belt wheel that is arranged on output shaft and load servomotor; Man-machine interface is electrically connected with driving servomotor controller, load servomotor controller respectively, for controlling the start and stop and the rotating speed that drive servomotor, and the load of load servomotor is set; Load servomotor controller and load servomotor are electrically connected; Drive servomotor controller to be electrically connected with driving servomotor;
The pinion wheel of gear reducer is fixedly connected with input shaft, and input shaft is fixed on bearing of input shaft seat by bearing; The gear wheel of gear reducer is fixedly connected with output shaft, and output shaft is fixed on output shaft bearing seat by bearing; Input shaft and output shaft all arrange more than two tool bearing at regular intervals and fix;
Input shaft vibration transducer is installed on bearing of input shaft seat, output shaft vibration transducer is installed on output shaft bearing seat; Signal amplifier is electrically connected with input shaft vibration transducer and output shaft vibration transducer respectively, and the amplifying signal of signal amplifier passes to signal process computer by data collecting card.
2. nonlinear gear system vibrating failure diagnosis experiment porch according to claim 1, it is characterized in that, described input shaft vibration transducer and output shaft vibration transducer are all provided with more than one, input shaft vibration transducer is arranged on bearing of input shaft seat different directions, and output shaft vibration transducer is arranged on output shaft bearing seat different directions.
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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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| 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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| CN103837342B CN103837342B (en) | 2016-06-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606361A (en) * | 2016-01-28 | 2016-05-25 | 上海交通大学 | Adjustable gap experiment platform |
| CN108167429A (en) * | 2017-12-25 | 2018-06-15 | 中北大学 | A kind of failure detector for gear-box |
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2014
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606361A (en) * | 2016-01-28 | 2016-05-25 | 上海交通大学 | Adjustable gap experiment platform |
| CN108167429A (en) * | 2017-12-25 | 2018-06-15 | 中北大学 | A kind of failure detector for gear-box |
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| CN103837342B (en) | 2016-06-08 |
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Granted publication date: 20160608 Termination date: 20210307 |