CN108223632B - The detection method of temperature change in disk based on coal mining brake - Google Patents
The detection method of temperature change in disk based on coal mining brake Download PDFInfo
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- CN108223632B CN108223632B CN201810084003.6A CN201810084003A CN108223632B CN 108223632 B CN108223632 B CN 108223632B CN 201810084003 A CN201810084003 A CN 201810084003A CN 108223632 B CN108223632 B CN 108223632B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/36—Circuit design at the analogue level
- G06F30/367—Design verification, e.g. using simulation, simulation program with integrated circuit emphasis [SPICE], direct methods or relaxation methods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D2066/001—Temperature
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- Pure & Applied Mathematics (AREA)
- Computational Mathematics (AREA)
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- Microelectronics & Electronic Packaging (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses the detection methods of temperature change in the disk based on coal mining brake, a large amount of thermal energy can be sharply generated in brake process mid-game, these, which are collected at the thermal energy in disk, will affect the braking ability of brake, and the maximum temperature point in disk is generally present in the intermediate axial edge placement of friction subcomponent, it is the main reason for causing brake performance to decline and its rub secondary heat fatigue that temperature, which reaches maximum friction sub area, since the structure of coal mining brake limits, maximum temperature region of variation during braking can not be detected directly and can only be obtained indirectly by other temperature measuring points.This detection method is by carrying out analog study to temperature field in friction bracket panel, it finds temperature in disk and sends out changing rule, the relationship between the temperature change of highest temperature region and the temperature of measurement point (other temperature spots) is established, the accurate measurement temperature for obtaining highest temperature region.
Description
Technical field
The present invention relates to the temperature detection models in the analysis of the temperature change of friction pairs of brake, mechano-electronic, especially
Probe into the Functional Design of axial temperature changing regularity and temperature detection in coalcutter brake disks.
Background technique
Industry is the secondary industry in China, is key pillars of the national economy, as the important industry in industry -- coal mine
Industry is always the basic industry in China, occupies an important position and acts in the development of national economy.Coalcutter is as coal mining
Important tool, extremely important in coal mining, its performance and quality is directly related to the safety and quality of coal production
Problem.Brake is the important safety brake apparatus of coalcutter, the quality of performance and the response speed of braking, is directly related to
Coalcutter uses safe and braking efficiency.Coalcutter with brake be by brake inside friction plate and brake(-holder) block it is mutual
The interior energy that the inertia kinetic energy of its coalcutter is converted into friction with friction is squeezed, the position of its coalcutter is no longer changed.
Coalcutter master brake to be used is dish-type liquid braking device, the brake big, small in size, weight with braking moment at present
Gently, simple structure, it is easy to adjust the features such as.Its working method uses spring braking, and hydraulic release, this mode is reliable, but from
Dynamicization degree is low, and this brake cannot be docked directly with monitoring center on coalcutter, therefore, it is impossible to realize its work condition inspection.
Temperature change influences the braking ability of brake very big in brake disks, rubs during brake is in running order secondary
Between the mutual extrusion temperature that causes detection system that can only detect outside disc it is unpredictable for temperature change in disk, in order to obtain
The temperature change of inner disk needs to analyze the change procedure in brake disks by finite element modelling brake operation state.
Certain mathematical simulation is carried out by analyzing temperature change in obtained disk and obtains changing rule, then by these changing rule applications
In the detection system, it can preferably reflect temperature change in disk.
Summary of the invention
The object of the present invention is to provide a kind of detection methods of temperature change in disk based on coal mining brake, effectively keep away
The excessively high bring adverse effect of temperature in brake disc is exempted from, the configuration of the present invention is simple, flexible operation can be according to live flexibly real
With, convenient for staff grasp, understand and analyze its working principle and working condition.
The technical scheme is that in a kind of disk based on coal mining brake temperature change detection method, it is special
Sign is to include the following steps
One: simulating brake device operating condition carries out temperature field analysis, specific analytic process to brake are as follows:
Step 101: friction pairs of brake being subjected to finite element modeling, after the completion of model foundation, using in anasys
Workbench module carries out grid dividing to it, in order to avoid not Convergent Phenomenon, to select after selecting suitable size of mesh opening
The automatic mesh generation of software inhouse.
Step 102: after the completion of grid dividing, to above-mentioned model carry out the general brake of Mechanical loading in braking process by
To the influence of torque, inertia force and rotary inertia, these power and torque are loaded into model, model is post-processed.
Step 103: the contact table by temperature field analysis during above-mentioned brake, due to brake disc with friction plate
Face is round, the better brake temperature variation of effect in order to obtain, and corresponding friction area is divided into six parts, i.e., 0 °,
60°,120°,180°,240°,300°；These regions carry out temperature acquisition drafting, respectively obtain No.1 contact surface, No. two connect
The maximum of contacting surface, No. three contact surfaces, No. four contact surfaces, No. five contact surfaces, No. six contact surfaces, No. seven contact surfaces, No. eight contact surfaces
Temperature, temperature change cloud atlas and the maximum temperature variation for the secondary contact surface that obtains rubbing.
Two: axial temperature changing rule, detailed process are as follows:
Step 201: by No.1 contact surface obtained in step 103, No. two contact surfaces, No. three contact surfaces, No. four contact surfaces,
No. five contact surfaces, No. six contact surfaces, No. seven contact surfaces, 0 ° of No. eight contact surfaces, 60 °, 120 °, 180 °, 240 °, 300 ° of differences point
The data in cloth region average, it is corresponding obtain No.1 contact surface, No. two contact surfaces, No. three contact surfaces, No. four contact surfaces,
No. five contact surfaces, No. six contact surfaces, No. seven contact surfaces, No. eight contact surface maximum temperatures change average value.
Step 202: by maximum temperature variation these data of average value of eight contact surfaces in step 201 in xoy plane
Distribution, and these points are connected to each other, obtain corresponding multi-line section curve.
Step 203: multi-line section curve obtained in step 202 being carried out curve fitting, the curve negotiating Maple of fitting is soft
The curve equation that part is simulated, obtain No.1 contact surface, No. two contact surfaces, No. three contact surfaces, No. four contact surfaces, No. five connect
Contacting surface, No. six contact surfaces, No. seven contact surfaces, the maximum temperature changing rule between No. eight this eight faces of contact surface are to get arriving axis
To temperature changing regularity.
Three: temperature-detecting device design, detailed process is as follows:
Step 301: after detection position is selected, temperature sensor is placed in No.1 contact surface, by No.1 contact surface
Temperature acquisition obtains No. five contact surfaces to temperature change relationship according to brake shaft and (is known that No. five contact surface temperature according to Fig. 2
Degree variation highest) disk in maximum temperature variation.Us are needed to simulate and acquire the signal that it is detected, temperature detection dress
It sets including signal switch device, the reception and processing unit of signal, outside display, external control device.The larger area of temperature change
Temperature-detecting device is placed in domain, is changed, is shown by the acquisition to temperature signal, dress, carrys out the temperature intuitively by brake bush
Degree situation of change is tested and analyzed.
Step 302: temperature-detecting device includes three platinum sensors, and brake is arranged in by way of stickup
On drive end bearing bracket.According to brake end cap and the regression equation of the secondary axial position that rubs, temperature, pass through detection brake drive end bearing bracket
Temperature calculates the temperature of the friction chondromitiome heart by lookup table mode, accumulates experience for the temperature detection of same type brake, selects
Test side of the MAX6675 as temperature-detecting device, temperature-detecting device detect that the value of temperature is indefinite, selected by ANASYS
Its maximum temperature region, the signal transmitted to it will carry out necessary filtering, exclude the interference of other unnecessary signals.Simultaneously
Certain design analysis is carried out to its inside C programmer.By flow chart to its C programmer structure optimization, select best
Program option carries out certain program debugging, is then carrying out solidification operation.
Step 303: single-chip microcontroller is STC89C52 series, is the production of macrocrystalline science and technology as the reception and processing unit of signal
Single clock/machine cycle (1T) single-chip microcontroller, be high speed/low-power consumption/superpower jamproof 8051 single-chip microcontroller of new generation, instruction
Code completely compatible traditional 8051, but fast 8-12 times of speed, it is internally integrated MAX810 Special reset circuit.Due to the center of control
Part is single-chip microcontroller, and single-chip microcontroller can only identify digital signal.It would therefore be desirable to convert the electrical signal to digital signal, selecting
Select in signal switch device, due to the device with when do not need to add amplifying circuit again, performance is stablized, and precision is high, integrates
The advantages that degree is high, fast response time, strong antijamming capability, save the cost.Therefore, selected HX711 as A/D conversion equipment.
Step 304: collected temperature progress host computer is shown, for the variation of real-time monitoring brake temperature value,
The visualization for improving intelligent monitoring realizes the communication of single-chip microcontroller and PC using VB Programming with Pascal Language man-machine interface.Upper aircraft window
Body interface mainly realizes the display of the real time temperature curve of first contact surface, is also changed using the axial temperature in step 2
The real time temperature variation of intermediate 4th contact surface of rule display.
Compared with the prior art, the present invention has the following advantages:
1, method and step of the invention is simple, easy to operate, easy to accomplish.
2, the present invention carries out temperature field simulation emulation to brake using finite element model, can effectively use brake base
This information carries out reliable analysis to temperature in friction bracket panel, solves the unreliability of traditional analysis and brings to temperature field analysis
Uncertain problem.
3, Finite Element Analysis on Temperature Field model of the present invention is by the axial temperature of the subcomponent that rubs variation and single
Rubbing, secondary circumference temp variation is organic, reasonably unites, and obtains the temperature change cloud atlas of contact surface, and by corresponding maximum
Temperature change carries out sample collection, the variation relation between axial rub pair is carried out by the temperature data of acquisition, and will be this
Relation formula gives temperature prediction means in rationally effective disk.
4, using method of the invention, it is possible to quickly and effectively assessing temperature variations in brake disks, being brake
The analysis and design of braking provide effective foundation and reference.
5, of the invention practical, using effect is good, convenient for promoting the use of.
In conclusion the method for the present invention step is simple, and it is easy to operate, it can be effectively with the sample letter of temperature change in disk
Breath carries out reliability detection and assessment to temperature change in liquid braking device disk, obtains corresponding temperature changing regularity, variation rule
Rule result is effective and reasonable, and practical, using effect is good, convenient for promoting the use of.
Below by the drawings and specific embodiments, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Fig. 1 is contact surface and temperature detecting point distribution map.
Fig. 2 is the maximum temperature change curve of eight contact surfaces.
Fig. 3 is axial temperature variation curve and temperature foh curve in disk.
Fig. 4 is temperature-detecting device flow chart.
Specific embodiment
As shown in Figure 1,1 corresponding contact surface one；2 corresponding contact surfaces two；3 corresponding contact surfaces three；4 corresponding contacts
Face four；5 corresponding contact surfaces five；6 corresponding contact surfaces six；7 corresponding contact surfaces seven；8 corresponding contact surfaces eight；9 is corresponding
It is temperature detecting point.The temperature change in Stopper contact face is analyzed after eight contact surface profile sets, analytical procedure:
Step 1: the basic parameter of selected coal mining brake carries out temperature field analysis to it, analytic process:
Step 101: friction pairs of brake being subjected to finite element modeling, model foundation is as shown in Figure 1, model foundation is completed
Afterwards, grid dividing is carried out to it using the workbench module in anasys, in order to avoid not Convergent Phenomenon, selected suitable
Size of mesh opening after to select the automatic mesh generation of software inhouse.
Step 102: after the completion of grid dividing, Mechanical loading being carried out to above-mentioned model, general brake is in braking process
It is influenced by torque, inertia force and rotary inertia, these power and torque is loaded into model, model is post-processed.
Step 103: the contact table by temperature field analysis during above-mentioned brake, for brake disc with friction plate
Face is circle, and the better brake temperature variation of effect, is divided into six for the friction area of corresponding eight contact surfaces in order to obtain
A part, i.e., 0 °, 60 °, 120 °, 180 °, 240 °, 300 ° carries out temperature acquisition in these regions and obtains No.1 contact surface, No. two
Contact surface, No. three contact surfaces, No. four contact surfaces, No. five contact surfaces, No. six contact surfaces, No. seven contact surfaces, No. eight contact surfaces are most
Big temperature is acquired draftings, the temperature change cloud atlas for the secondary contact surface that obtains rubbing, maximum temperature variation sample point such as 1 institute of table
Show:
1 maximum temperature of table changes sample point acquisition
Step 2: as shown in Fig. 2, being the maximum temperature change curve of eight contact surfaces, by the difference of eight contact surfaces point
The maximum temperature data in cloth region average.It is corresponding to obtain No.1 contact surface, No. two contact surfaces, No. three contact surfaces, four
Number contact surface, No. five contact surfaces, No. six contact surfaces, No. seven contact surfaces, No. eight contact surface maximum temperatures change average values.By step
Maximum temperature variation these data of average value of eight contact surfaces are distributed in reference axis in 201, and each other by these points
Connection, obtains corresponding multi-line section curve.Obtained multi-line section curve carries out curve fitting, the song of obtained curve and fitting
For line as shown in figure 3, from Fig. 2, Fig. 3 and table 1 can clearly find out No. five contact surface temperature highests, the curve negotiating of fitting
The curve equation that Maple software is simulated obtains No.1 contact surface, No. two contact surfaces, No. three contact surfaces, No. four contacts
Face, No. five contact surfaces, No. six contact surfaces, No. seven contact surfaces, the maximum temperature changing rule between No. eight this eight faces of contact surface,
Obtain axial temperature changing rule.It changes formula are as follows:
Y=-2.606X2+23.28X+182.8
Wherein y is the temperature change of contact surface, which contact surface x corresponding is.
Step 3: selecting after suitable temperature detecting point (i.e. 9 be measuring points placement position in Fig. 1), carries out temperature detection
Device design, detailed process is as follows:
Step 301: after detection position is selected, us being needed to simulate and acquire the signal that it is detected, detect function
It can include temperature-detecting device, signal switch device, the reception and processing unit of signal, outside display, external control device.Temperature
Degree changes greatly region and places temperature-detecting device, is changed, is shown by the acquisition to temperature signal, dress, and coming intuitively will braking
The temperature variations of device friction plate are tested and analyzed.
Step 302: temperature-detecting device includes three platinum sensors, and brake is arranged in by way of stickup
On drive end bearing bracket.According to brake end cap and the regression equation of the secondary axial position that rubs, temperature, it may be convenient to be braked by detection
The temperature of device drive end bearing bracket calculates the temperature of the friction chondromitiome heart by lookup table mode, is the temperature detection product of same type brake
Tired experience, selects test side of the MAX6675 as temperature-detecting device, internal flow chart is as shown in Figure 4.Temperature-detecting device
It detects that the value of temperature is indefinite, its maximum temperature region is selected by ANASYS, the signal transmitted to it will carry out necessary filter
Wave excludes the interference of other unnecessary signals.Certain design is carried out to its inside C programmer simultaneously to analyze.Pass through stream
Journey figure carries out certain program debugging, then carries out solidification fortune to its C programmer structure optimization, selected optimum program scheme
Row.
Step 303: single-chip microcontroller is the monolithic that STC89C52 series is single clock/machine cycle (1T) that macrocrystalline science and technology produces
Reception and processing unit of the machine as signal are high speed/low-power consumption/superpower jamproof 8051 single-chip microcontrollers of new generation, instruct generation
Code completely compatible traditional 8051, but fast 8-12 times of speed, it is internally integrated MAX810 Special reset circuit.Due to the central part of control
It is divided into single-chip microcontroller, single-chip microcontroller can only identify digital signal.It would therefore be desirable to convert the electrical signal to digital signal, selecting
In signal switch device, due to the device with when do not need to add amplifying circuit again, performance is stablized, and precision is high, integrated level
The advantages that height, fast response time, strong antijamming capability, save the cost.Therefore, selected HX711 as A/D conversion equipment.
Step 304: collected temperature progress host computer is shown, for the variation of real-time monitoring brake temperature value,
The visualization for improving intelligent monitoring realizes the communication of single-chip microcontroller and PC using VB Programming with Pascal Language man-machine interface.Upper aircraft window
Body interface mainly realizes the display of the real time temperature curve of first contact surface, is also changed using the axial temperature in step 2
The real time temperature variation of intermediate 4th contact surface of rule display.
Claims (1)
1. the detection method of temperature change in a kind of disk based on coal mining brake, it is characterized in that in face of during brake
There is the reason of heat fatigue or even brake fade in the excessively high brake that will lead to of friction plate temperature, utilizes finite element modelling brake work
Make state, analyze the temperature change situation in brake disks, the change of brake axial temperature is simulated using a certain amount of data
Change curve, and these are analyzed into the data come and is formulated, obtains brake process mid-game inner shaft to temperature change
Process；Specifically include following steps
Step 1: simulating brake device operating condition carries out temperature field analysis, specific analytic process to brake are as follows:
Step 101: finite element being carried out to friction pairs of brake and establishes model, using the workbench module in anasys to it
Carry out grid dividing；
Step 102: after the completion of grid dividing, Mechanical loading being carried out to the model that step 101 is established, model was carried out at the later period
Reason；
Step 103: the friction area of contact surface corresponding between brake disc and friction plate is divided into six parts, i.e., 0 °, 60 °,
120 °, 180 °, 240 °, 300 ° carry out temperature acquisition in these regions, obtain No.1 contact surface, No. two contact surfaces, No. three contacts
Face, No. four contact surfaces, No. five contact surfaces, No. six contact surfaces, No. seven contact surfaces, No. eight contact surfaces maximum temperature, and to acquisition
Maximum temperature drawn, temperature change cloud atlas and the maximum temperature variation for the secondary contact surface that obtains rubbing；
Step 2: axial temperature changing rule, detailed process are as follows:
Step 201: by No.1 contact surface obtained in step 103, No. two contact surfaces, No. three contact surfaces, No. four contact surfaces, No. five
0 °, 60 °, 120 °, 180 °, 240 °, 300 ° of different distributions areas of contact surface, No. six contact surfaces, No. seven contact surfaces, No. eight contact surfaces
The data in domain average, it is corresponding obtain No.1 contact surface, No. two contact surfaces, No. three contact surfaces, No. four contact surfaces, No. five connect
Contacting surface, No. six contact surfaces, No. seven contact surfaces, No. eight contact surface maximum temperatures change average value；
Step 202: maximum temperature variation these data of average value of eight contact surfaces in step 201 are distributed in xoy plane,
And these points are connected to each other, obtain corresponding multi-line section curve；
Step 203: multi-line section curve obtained in step 202 is carried out curve fitting, the curve negotiating Maple software of fitting into
The curve equation of row simulation obtains No.1 contact surface, No. two contact surfaces, No. three contact surfaces, No. four contact surfaces, No. five contacts
Face, No. six contact surfaces, No. seven contact surfaces, the maximum temperature changing rule between No. eight this eight faces of contact surface are to get to axial
Temperature changing regularity；
Step 3: temperature-detecting device design, detailed process is as follows:
Step 301: temperature sensor is placed in No.1 contact surface, by the temperature acquisition to No.1 contact surface, according to brake
Axial temperature variation relation, which obtains maximum temperature in the disk of No. five contact surfaces, to be changed, and is changed, is shown by the acquisition to temperature signal, dress
Show intuitively to test and analyze the temperature variations of brake bush；
Step 302: temperature-detecting device includes three platinum sensors, and the front end of brake is arranged in by way of stickup
It covers, selects test side of the MAX6675 as temperature-detecting device, according to brake end cap and rub secondary axial position, temperature
Regression equation, by detect brake drive end bearing bracket temperature, calculated by lookup table mode friction the chondromitiome heart temperature, temperature
Detection device detects that the value of temperature is indefinite, selectes its maximum temperature region by ANASYS, the signal transmitted to it will carry out
Necessary filtering excludes the interference of other unnecessary signals, while carrying out certain design point to its inside C programmer
Analysis, by flow chart to its C programmer structure optimization, selected optimum program scheme carries out certain program debugging, then exists
Carry out solidification operation；
Step 303: selecting reception and processing unit of the STC89C52 single chip as signal, HX711 is as A/D conversion equipment；
Step 304: single-chip microcontroller shows collected temperature progress host computer, for the change of real-time monitoring brake temperature value
Change, improve the visualization of intelligent monitoring, using VB Programming with Pascal Language man-machine interface, realizes the communication of single-chip microcontroller and host computer,
Host computer window interfaces mainly realize the display of the real time temperature curve of first contact surface, also utilize the axial direction in step 2
The real time temperature variation of intermediate 4th contact surface of temperature changing regularity display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810084003.6A CN108223632B (en) | 2018-01-29 | 2018-01-29 | The detection method of temperature change in disk based on coal mining brake |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810084003.6A CN108223632B (en) | 2018-01-29 | 2018-01-29 | The detection method of temperature change in disk based on coal mining brake |
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| CN108223632B true CN108223632B (en) | 2019-06-21 |
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| CN115163708B (en) * | 2022-06-21 | 2023-07-25 | 东风柳州汽车有限公司 | Real-time detection method and device for temperature of brake disc |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204740079U (en) * | 2015-05-29 | 2015-11-04 | 黑龙江大学 | Special type vehicle automobile body temperature monitoring device based on fiber grating |
| CN105956264A (en) * | 2016-04-28 | 2016-09-21 | 辽宁科技学院 | Temperature field simulated analysis method applied to multi-disk dry brake under comprehensive action of multiple physical fields |
| CN205689641U (en) * | 2016-06-22 | 2016-11-16 | 西安科技大学 | Coal-winning machine multi-disc brake with work state monitoring function |
| CN107633144A (en) * | 2017-09-25 | 2018-01-26 | 湖南大学 | Large-scale permanent-magnetic wind driven generator Parameters design based on electromagnetism Thermal-mechanical Coupling field |
-
2018
- 2018-01-29 CN CN201810084003.6A patent/CN108223632B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204740079U (en) * | 2015-05-29 | 2015-11-04 | 黑龙江大学 | Special type vehicle automobile body temperature monitoring device based on fiber grating |
| CN105956264A (en) * | 2016-04-28 | 2016-09-21 | 辽宁科技学院 | Temperature field simulated analysis method applied to multi-disk dry brake under comprehensive action of multiple physical fields |
| CN205689641U (en) * | 2016-06-22 | 2016-11-16 | 西安科技大学 | Coal-winning machine multi-disc brake with work state monitoring function |
| CN107633144A (en) * | 2017-09-25 | 2018-01-26 | 湖南大学 | Large-scale permanent-magnetic wind driven generator Parameters design based on electromagnetism Thermal-mechanical Coupling field |
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