CN104318851B - Rotating machinery fault analog platform - Google Patents
Rotating machinery fault analog platform Download PDFInfo
- Publication number
- CN104318851B CN104318851B CN201410627748.4A CN201410627748A CN104318851B CN 104318851 B CN104318851 B CN 104318851B CN 201410627748 A CN201410627748 A CN 201410627748A CN 104318851 B CN104318851 B CN 104318851B
- Authority
- CN
- China
- Prior art keywords
- gear
- fault
- shifting slide
- rotating machinery
- simulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- 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
Abstract
The present invention relates to a kind of rotating machinery fault analog platform, it is the laboratory equlpment of a kind of replication experiment for rotating machinery fault and diagnostic test teaching, including shifting slide gear mechanism, Geneva mechanism, three shifting slide gear mechanisms, screw-nut body, and the combined mechanism being made up of with internal messing partial gear worm and gear；Each mechanism is separate, can constitute gear pair by the gear of each mechanism end and power gear and obtain power.The present invention highlights and solves experimentation fault part replacement process difficulty, the single problem that can not meet teaching demand of experiential function, and combining with teaching purpose carries out holistic conformation, compensate for the blank of colleges and universities' rotating machinery class malfunction test.It is configured to basis with the machine driving of more existing mechanical experiment platforms and test device, is conducive to improving the reliability of Novel rotary mechanical breakdown analog platform, practicality, ease for use, makes experiment porch have good promotional value.
Description
Technical field
The invention belongs to electromechanical integration experiment field, be specifically related to the detection platform of a kind of rotating machinery fault.This
Bright relate to a kind of rotating machinery fault analog platform.
Background technology
Current domestic and international existing rotating machinery fault analog platform is basically applied in commercial production and scientific research, and it becomes
This is the highest.And the rotating machinery fault analog platform that can be applied to teaching all exists operation inconvenience, use function limitation
Problem.
The analysis of rotating machinery fault is in the courses such as China university Machine Design, equipment condition monitoring and fault diagnosis
Important content, and the simulation 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 put down for the comprehensive experiment that rotating machinery typical fault problem carries out demonstrating and analyzing
Platform.It can simulate axle system typical fault, bearing typical fault, gear typical fault.
But, on existing classroom, teacher's rotating machinery fault to be used simulation experiment platform generally also exists following a few side
The problem in face: 1. need Tear Down Deficiency part continually, waste time and energy, affects the normal progress of course；2. related data shows,
Such occupation mode easily causes failed part and damages, it is impossible to use；3. may be because of loaded down with trivial details during students hands-on
Process and lose enthusiasm；4. being provided only with the fault of single type on experiment porch, student can not go to understand the most all sidedly
The feature of rotating machinery fault.
Therefore, in order to realize the classroom instruction purpose of following three points: 1. teacher carries out rotating machinery fault simulation easily
Demonstration, allows student have one to rotating machinery fault and experiences intuitively；2. student can use laboratory table to carry out rotating machinery class
The replication experiment of typical fault, deepens the understanding to relative theory by experiment；3. conventional event is grasped by experiment porch
Barrier diagnostic method.We intend designing a novel rotating machinery fault analog platform.
Summary of the invention
Solved by the invention technical problem is that: a kind of rotating machinery fault analog platform is provided, in order to solve rotation at present
The problem turning mechanical fault detection experiment porch function singleness.
The present invention solves its technical problem and uses following technical scheme:
The rotating machinery fault analog platform that the present invention provides, it includes shifting slide gear mechanism, Geneva mechanism, three slidings
Gear mechanism, screw-nut body, and the combined mechanism being made up of with internal messing partial gear worm and gear；Each mechanism
Separate, gear pair can be constituted by the gear of each mechanism end and power gear and obtain power.
Described shifting slide gear mechanism, its by shifting slide gear mechanism make the gear on alternating current generator respectively with three faults
The input end gear engagement of analog module, and provide power for them；Described three fault simulation modules are gear distress respectively
Analog module, axle system fault simulation module, bearing fault simulation module.
Described Geneva mechanism, it can carry out the switching of three kinds of faulty bearings and normal bearing, simulate three types
Bearing fault, dismounting difficult problem when faulty bearings thus can be avoided to change；The typical fault of bearing is punctuated in having
Erosion, outer ring spot corrosion, retainer damage.
Three described shifting slide gear mechanisms, it includes a normal gear, a spot corrosion gear and a tooth surface abrasion
Gear, is moved by fork controls three shifting slide gear and can make the left and right sliding on three shifting slide gear axles of this shift fork, respectively with
Normal gear on another root axle, spot corrosion gear, the engagement of tooth surface abrasion gear.
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 are respectively: a pair normal gear engagement, a pair engagement of spot corrosion gear, a pair tooth surface abrasion gear are nibbled
Close.
The described combined mechanism being made up of with internal messing partial gear worm and gear, and screw-nut body, come
Simulation axle system typical fault, avoids the dismounting work of part with this；Described typical fault include angle misalign, sound uneven
Weighing apparatus.
Described screw-nut body, its this widget of joint bolt nut achieves the simulation of static unbalance, regulation
The slip of bolt and nut on disk mounting holes, thus change rotating circular disk balance mass on axle and carry out the mass eccentricity of model rotor；
Further, the unbalance dynamic that two rotating circular disk their spacings of simulation are different is used, by leading screw and nut mechanism regulation two rotation
Turn the distance between disk, simulate the unbalance dynamic under multiple spacing.
The present invention compared with prior art has a following major advantage:
Cutting between various faults gear, various faults bearing is achieved respectively by shifting slide gear mechanism, Geneva mechanism
Change, it is to avoid the inconvenience that their dismounting is brought；
Worm and gear is utilized to achieve, with the combined mechanism of internal messing partial gear, the fault simulation that angle misaligns, with
Shi Qiaomiao combines worm and gear reverse self-locking characteristic, and to maintain the state that angle misaligns constant.
The mode using virtual instrument software obtains experimental data, not only realizes experimental data visualization, also drops
Low cost, enhances the function of detection.
Accompanying drawing explanation
Fig. 1 is the 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 flow chart of rotating machinery fault.
Fig. 9 is that the present invention is for detecting the Cleaning Principle flow chart of rotating machinery fault.
Figure 10 is most common failure correspondence spectrum diagram.
In figure: 1. power plant module；1.1 ac motor；1.2 shifting slide gear mechanisms；2. axle system fault simulation module；2.1
Decelerator；2.2 regulation screws；2.3 rotate disk；2.4 worm and gear；2.5 internal messing partial gears；2.6 feed screw nut machines
Structure；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 decelerator；4.2 3 shifting slide gear mechanisms；4.3 normal gears；4.4 spot corrosion gears；4.5 tooth surface abrasion teeth
Wheel；4.6 magnetic powder brake.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the invention will be further described.
The present invention provide rotating machinery fault analog platform, its structure as shown in Figures 1 to 6, including shifting slide gear machine
Structure 1.2, worm and gear 2.4 and the combined mechanism of internal messing partial gear 2.5, screw-nut body 2.6, Geneva mechanism 3.5
With three shifting slide gear mechanisms 4.2 etc..Each mechanism above-mentioned is separate, can be by the gear of each module ends and power plant module
On shifting slide gear mechanism 1.2 constitute gear pair obtain power.
Described shifting slide gear mechanism 1.2, its by the shifting slide gear on power plant module 1 respectively with three fault simulation modules
Input end gear engagement, make ac motor 1.1 for they provide power；And by the deceleration before each fault simulation module
Decelerator 2.1 in device, such as axle system fault simulation module, reduces rotating speed, transmission power, increases torque.Described three faults
Analog module is axle system fault simulation module 2, bearing fault simulation module 3, gear distress analog module 4 respectively.
Described worm and gear 2.4 and the combined mechanism of internal messing partial gear 2.5, the typical fault of its axle system has: angle
Degree misaligns, sound is uneven.The present invention utilizes worm and gear 2.4 to carry out mould with the combined mechanism of internal messing partial gear 2.5
Intend angle and misalign fault, so there is no need to use pin to position with bolt and nut, it is to avoid parts of these location dismount
Work.Manually make worm screw rotate, drive worm gear wheel.The pinion rotation coaxial with worm gear, at internal messing partial gear machine
Under the effect of structure, whole driven shaft part defines angle with driving shaft and misaligns.Make use of simultaneously worm and gear reversely from
Lock characteristic, can realize driven shaft part and maintain angle condition of misalignment when fault simulation is with detection, keep fixing.
Described screw-nut body 2.6, its combination regulation this widget of screw 2.2 achieves the simulation of static unbalance,
Regulation rotates the slip regulating screw 2.2 on disk 2.3 installing hole, thus changes rotation disk 2.3 balance mass on axle and carry out mould
Intend the mass eccentricity (static unbalance) of rotor；And it is possible to the spacing that them are simulated by use two rotation disks 2.3 is different
Unbalance dynamic, regulates the distance between two rotating circular disks by leading screw and nut mechanism 2.6, simulates the dynamic injustice under multiple spacing
Weighing apparatus.
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,
Simulate the bearing fault of three types, dismounting difficult problem when faulty bearings thus can be avoided to change；The allusion quotation of bearing
Type fault 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, thus can avoid tooth
The frequent dismounting of wheel；It is reduced the rotating speed of incoming gear distress analog module by decelerator 4.1 and is increased torque；It passes through magnetic
Powder brake 4.6 carries out the measurement of power of gearing and loads and braking.Described three kinds of gear operating modes refer to: operating mode 1 be a pair normal
Gear engages；Operating mode 2 is a pair spot corrosion gear engagement；Operating mode 3 is a pair tooth surface abrasion gear engagement.This three shifting slide gears machine
Structure 4.2 includes a normal gear, a spot corrosion gear and a tooth surface abrasion gear, by fork controls three shifting slide gear
Movement can make its left and right sliding on axle, respectively with the normal gear 4.3 on another root axle, spot corrosion gear 4.4, tooth surface abrasion tooth
Wheel 4.5 engagement.
The above-mentioned rotating machinery fault analog platform that the present invention provides, it is demonstrated in rotating machinery typical fault problem
With the application in analysis.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 is uneven and angle misaligns；
In described bearing fault, common typical fault has: internal ring spot corrosion, outer shroud spot corrosion, retainer damage and bearing block pine
Dynamic.
Using this Novel rotary mechanical breakdown analog platform of present invention design, teacher can realize on laboratory
The analog demenstration of these fault types, students can be by touching, listen sound, observing sensor data measured at computer display interface
The generation of rotating machinery a certain fault is set up on the visual understanding of rotatory mechanical system impact with by normal existing etc. various modes
As with fault in the presence of the contrast of phenomenon be better able to recognize the extent of injury and the feature of clear various fault, it is possible to rotate
The replication experiment of mechanical breakdown and the diagnostic test of fault.
The present invention can use 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, it is therefore desirable to be respectively them
Thering is provided power, its scheme is: realize shifting slide gear and three fault detection module power intakes by shifting slide gear mechanism 1.2
The gear engagement at place, can be respectively them and provide power.
1. gear distress analog module:
Using three shifting slide gear mechanisms 4.2, three gears of three shifting slide gears are normal gear, spot corrosion tooth respectively
Wheel, tooth surface abrasion gear.Can engage, i.e. 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 tooth surface abrasion gear these three operating mode can be simulated.
2. axle system fault simulation module:
The unbalanced analog form of sound is: relies on regulation to rotate on disk 2.3 rotor and regulates screw 2.2 on its hole slot
Slide, simulate static unbalance；Rely on two above-mentioned rotation disks and screw-nut body 2.6, simulate two disc rotors not
Unbalance dynamic situation under same distance.The analog form that angle misaligns is then: incomplete with internal messing by worm and gear 2.4
The combined mechanism of gear 2.5 drive universal coupling right part with position, universal coupling center as the center of circle, thus from
Moving axis misaligns with driving shaft angulation, and the reverse self-locking characteristic of worm and gear 2.4 can ensure to tie up when fault simulation simultaneously
Hold the state that angle misaligns constant.
3. bearing fault simulation module:
The analog form of fault is: utilize Geneva mechanism 3.5 to realize normal bearing 3.1 and three faulty bearings 3.2-3.4
Switching.The simulation of turbine being utilized can use 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 by piezoelectric acceleration transducer, audion
Amplifying circuit, data collecting card, virtual instrument software form.First can be by piezoelectric acceleration transducer respectively in each fault
Analog module detects position accordingly and obtains vibration signal, via the electric charge of the high impedance that sensor is obtained by transistor amplifier
Signal transfers low-impedance voltage signal to, then analog signals can be changed into Usage data collection card digital quantity signal, sends into
Analyze and process with the virtual instrument software of labview software programming.
2. the design of detection mode:
As shown in Figure 8, piezoelectric acceleration transducer is relied on to obtain vibration signal, via transistor amplifier by high resistant
Anti-charge signal transfers voltage signal in low impedance, then the conversion through data collecting card simulation amount Yu digital quantity to, can send
Enter the virtual instrument software Treatment Analysis finished in computer equipment, observation experiment phenomenon with labview.
3.. detection mode flow process:
As it is shown in figure 9, include the replication experiment function of rotating machinery typical fault and the diagnosis merit of rotating machinery fault
Energy.
(1) the replication experiment function of rotating machinery typical fault:
By switching mechanism and detection module, the final data shown in computer virtual instrument software can be observed and carry out
It is related to the replication experiment of all kinds of fault conclusion.
(2) diagnostic function of rotating machinery fault:
The method of learning and mastering common fault diagnosis diagnoses the type of the fault of generation, position etc..As observable vibrates
Spectrogram carry out the judgement of fault type.
The design of virtual instrument detection mode advantageously reduces 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 rotating machinery allusion quotation on experiment porch
The simulation of type fault, carries out replication experiment and the diagnostic test being correlated with.Go to recognize rotating machinery by experiment the most all sidedly
Fault, the study of Auxiliary Principle knowledge.
Table 1 replication experiment content table
Claims (2)
1. a rotating machinery fault analog platform, it is characterised in that include shifting slide gear mechanism, Geneva mechanism, three sliding teeth
Wheel mechanism, screw-nut body, and the combined mechanism being made up of with internal messing partial gear worm and gear；Each mechanism's phase
The most independent, constitute gear pair by the gear of each mechanism end and power gear and obtain power；
Described shifting slide gear mechanism, its by shifting slide gear mechanism make the gear on alternating current generator respectively with three fault simulation moulds
The input end gear engagement of block, and provide power for them；Described three fault simulation modules are that gear distress simulates mould respectively
Block, axle system fault simulation module, bearing fault simulation module；
Described Geneva mechanism, it, by the switching of three kinds of faulty bearings with normal bearing, simulates the allusion quotation of the bearing of three types
Type fault, this makes it possible to dismounting difficult problem when avoiding faulty bearings to change；The typical fault of bearing has inner ring spot corrosion, outer
Punctuate erosion, retainer damage；
Described three shifting slide gear mechanisms, including a normal gear, a spot corrosion gear and a tooth surface abrasion gear, pass through
Fork controls three shifting slide gear moves and can make the left and right sliding on three shifting slide gear axles of this shift fork, respectively with on another root axle
Normal gear, spot corrosion gear, tooth surface abrasion gear engagement；
Described screw-nut body, its this widget of joint bolt nut achieves the simulation of static unbalance, regulation disk peace
The slip of bolt and nut on dress hole, thus change rotating circular disk balance mass on axle and carry out the mass eccentricity of model rotor；Further, make
With the different unbalance dynamic of two rotating circular disks their spacing of simulation, by screw-nut body regulate two rotating circular disks it
Between distance, simulate the unbalance dynamic under multiple spacing；
The described combined mechanism being made up of with internal messing partial gear worm and gear, and screw-nut body, simulate axle
It is typical fault, avoids the dismounting work of part with this；Described axle system typical fault include angle misalign, sound uneven
Weighing apparatus.
Rotating machinery fault analog platform the most according to claim 1, it is characterised 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 is normal
Gear engagement, a pair spot corrosion gear engagement, a pair tooth surface abrasion gear engagement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410627748.4A CN104318851B (en) | 2014-11-10 | 2014-11-10 | Rotating machinery fault analog platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410627748.4A CN104318851B (en) | 2014-11-10 | 2014-11-10 | Rotating machinery fault analog platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104318851A CN104318851A (en) | 2015-01-28 |
| CN104318851B true CN104318851B (en) | 2016-09-14 |
Family
ID=52374075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410627748.4A Expired - Fee Related CN104318851B (en) | 2014-11-10 | 2014-11-10 | Rotating machinery fault analog platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104318851B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105277358B (en) * | 2015-11-27 | 2018-05-08 | 长安大学 | The power taking measurement of power platform and its application method of a kind of paver screw distributing device |
| CN107314893B (en) * | 2017-05-08 | 2020-05-22 | 上海交通大学 | Modularized multifunctional rotor experiment table |
| 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 |
| 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 |
| CN113050599B (en) * | 2021-03-16 | 2022-09-23 | 中国人民解放军国防科技大学 | Fault diagnosis test bed for electromechanical actuator |
| CN113049958B (en) * | 2021-04-13 | 2022-06-10 | 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984482A (en) * | 2010-11-18 | 2011-03-09 | 浙江亚龙教育装备股份有限公司 | Comprehensive training assessment device for mechanical assembly and adjustment technology |
| CN103514797A (en) * | 2013-10-31 | 2014-01-15 | 马登云 | Mechanical principle experiment examination platform |
| CN203415119U (en) * | 2013-04-28 | 2014-01-29 | 苏州博实机器人技术有限公司 | Dynamo-electric integrated general teaching platform |
| CN203858810U (en) * | 2014-05-22 | 2014-10-01 | 张远芳 | New gear manufacturing experiment teaching device with integrated gear shaping and gear hobbing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU1787287C (en) * | 1990-11-27 | 1993-01-07 | В.А.Высокий и М.Е.Матиласов | Video monitoring of models |
-
2014
- 2014-11-10 CN CN201410627748.4A patent/CN104318851B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984482A (en) * | 2010-11-18 | 2011-03-09 | 浙江亚龙教育装备股份有限公司 | Comprehensive training assessment device for mechanical assembly and adjustment technology |
| CN203415119U (en) * | 2013-04-28 | 2014-01-29 | 苏州博实机器人技术有限公司 | Dynamo-electric integrated general teaching platform |
| CN103514797A (en) * | 2013-10-31 | 2014-01-15 | 马登云 | Mechanical principle experiment examination platform |
| CN203858810U (en) * | 2014-05-22 | 2014-10-01 | 张远芳 | New gear manufacturing experiment teaching device with integrated gear shaping and gear hobbing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104318851A (en) | 2015-01-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104318851B (en) | Rotating machinery fault analog platform | |
| CN107314893B (en) | Modularized multifunctional rotor experiment table | |
| CN101900640B (en) | Fault simulation combined test table of machine drive system | |
| Liu et al. | Resultant vibration signal model based fault diagnosis of a single stage planetary gear train with an incipient tooth crack on the sun gear | |
| CN207336013U (en) | Dual rotors system coupling misaligns simulator | |
| CN100575904C (en) | A kind of multi-fault coupling gear box simulated experiment bench | |
| CN105675298B (en) | A kind of corner-type Hooks coupling universal coupling testing stand | |
| CN103234747B (en) | Test stand capable of adjusting installation errors for comprehensive performance of spiral bevel gears | |
| CN103487252A (en) | Automobile transmission rack endurance test operation state monitoring method | |
| CN102967459A (en) | Simulated experiment system for fault of rotary machine | |
| CN104330254B (en) | A kind of laboratory table of simulation gear combination fault and analogy method | |
| CN102252840B (en) | Tester of fault diagnosis of rotating machinery with closed power | |
| CN210269162U (en) | Wind power gear box test bed measurement and control system for simulating working conditions | |
| CN204269367U (en) | Helicopter Main driving unit fault diagnosis comprehensive experiment table | |
| CN105067106B (en) | A kind of intershaft bearing vibration signals collecting method | |
| CN104502094B (en) | A kind of Helicopter Main driving unit fault analogue means | |
| CN202614367U (en) | Fault diagnosis apparatus for induced draught fan | |
| CN114720119A (en) | Comprehensive fault simulation test bed considering multidirectional loading working condition for plate and strip rolling mill | |
| CN201199195Y (en) | Simulated experiment bench for multi-fault coupling gear case | |
| CN109243234A (en) | A kind of gear train assembly fault diagnosis experimental bench | |
| CN201993125U (en) | Testing platform of yaw systems in wind turbine generator system plant | |
| CN202994993U (en) | Single-wheel drive mode test system and drive comprehensive performance test apparatus formed by the same | |
| CN116625692B (en) | Gear type coaxial contra-rotating double-rotor system simulation test bed | |
| CN202793970U (en) | Double-disc type lubricating oil tractive power testing machine | |
| CN2518097Y (en) | Integrated fault diagnostic test bench for machinery and appts. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160914 Termination date: 20171110 |