CN104374660B - Friction wheel wear degree monitoring method - Google Patents
Friction wheel wear degree monitoring method Download PDFInfo
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- CN104374660B CN104374660B CN201410707094.6A CN201410707094A CN104374660B CN 104374660 B CN104374660 B CN 104374660B CN 201410707094 A CN201410707094 A CN 201410707094A CN 104374660 B CN104374660 B CN 104374660B
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- auxiliary wheel
- speed measuring
- measuring module
- wheel
- module
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Abstract
The invention provides a wear degree monitoring method applied to a friction wheel in a friction wheel transmission conveying system. A measuring system comprises an auxiliary wheel speed measuring module, a driving wheel speed measuring module and a signal processing and transmitting module, the auxiliary wheel speed measuring module is mainly composed of an elastic wheel fork capable of rotating along with fixed axis, an auxiliary wheel, a proximity switch and the like, elastic force enables the auxiliary wheel to closely contact with the friction wheel and rotate along with the same, and realtime thickness of the friction wheel can be acquired by calculating according to a relation that linear speeds of contact points are equal; the driving wheel speed measuring module is used when an on-site control system cannot provide rotating speed parameters of the friction wheel, and a basic principle for speed measuring of the driving wheel speed measuring module is that the proximity switch is used to calculate number of pulse signals within fixed time. The signal processing and transmitting module takes a controller as a core, processes and calculates rotating speed signals of the auxiliary wheel speed measuring module and the driving wheel speed measuring module and outputs the signals by means of switch value, standard current signals and serial port signals.
Description
Technical field
The present invention relates to frictional wheel drive technical field is and in particular to a kind of friction foot wheel abrasion journey being applied on pipeline
The automatic monitoring method of degree and instrument.
Background technology
Frictional wheel drive is that one kind clamps mobile platform using two-wheeled directly contact or two-wheeled, and compresses and produce frictional force
To realize the mechanical drive mode of power transmission.It has the advantages of frame for movement is simple, and rotational noise is little and easy to maintenance,
The sector applications such as machinery, weaving, automobile and logistics are extensive.
The structure of friction pulley is generally the material that steel wheel hub is cladded with the big coefficient of friction such as leather, polyurethane or rubber.?
During long-term use, the thickness of friction pulley outer layer friction material is gradually reduced in fact it could happen that skidding, being driven the feelings such as imbalance
Condition.A certain friction pulley breaks down and may lead to whole production line downtime, has a strong impact on the production schedule.Therefore, to friction disc sharpener
Damage degree carries out real-time monitoring, and inputs a signal into necessary to corresponding control system.
Be presently available for monitoring the predominantly noncontacting proximity sensor of friction pulley thickness, including capacitive displacement transducer,
Eddy current displacement sensor, ultrasonic displacement sensor and laser displacement sensor etc..Capacitive displacement transducer measures model
Enclose little, big for rotary part installation difficulty；Current vortex sensor effectively can only be monitored to metal material part, to poly- ammonia
The non-metal objects such as ester or rubber cannot measure；Ultrasonic displacement sensor is big to short distance measurement error, and installation accuracy requires
High and easily affected by working environment；Laser displacement sensor has strict demand to the transparency of testee, to polyurethane etc. half
There is error in transparent material monitoring result.
Content of the invention
It is used for monitoring the defect of friction pulley thickness presence for existing non-contact displacement sensor, applicant changes through research
Enter, a kind of indirect contact displacement monitoring method being applied to friction pulley thickness in frictional wheel drive induction system is provided, solve
Drawbacks described above present in technology at present.
Technical scheme is as follows：
The present invention provides one kind to be used for monitoring the friction pulley degree of wear, i.e. the measuring system of friction material thickness, by assisting
Wheel speed measuring module, drivewheel speed measuring module and three parts of signal transacting pick-up module form.Auxiliary wheel speed measuring module and active
Wheel speed measuring module connects signal transacting pick-up module respectively, and signal transacting pick-up module connects the control system of concrete application object
System.
Auxiliary wheel speed measuring module is used for measuring rotary speed in the case of friction pulley thickness real-time change, by casing, auxiliary wheel,
Auxiliary wheel sense contact, auxiliary wheel fork, auxiliary wheel test the speed proximity switch, wheel fork fixing nut, spring, wheel fork fixing axle, spring
Fixing card, upper limit card, lower limit card, signal port, auxiliary wheel stretch out hole and casing fixed bit.It is existing that casing is fixed on application
On the support of field, adjustment casing installing hole makes auxiliary wheel and tested friction pulley be in close contact；Auxiliary wheel is installed on auxiliary wheel fork,
Auxiliary wheel fork fifth wheel fork fixing axle, wheel fork fixing axle connects casing；It is also associated with auxiliary wheel on auxiliary wheel fork and test the speed close to opening
Close, auxiliary wheel tests the speed proximity switch for monitoring the rotating speed of auxiliary wheel, the auxiliary wheel proximity switch that tests the speed connects signal port, signal
Port is fixed in casing；Spring one end connect wheel fork fixing axle, the other end connect auxiliary wheel fork, spring force make auxiliary wheel to
Friction pulley direction produces pressure；Auxiliary wheel fork both sides have upper limit card and lower limit card respectively, and they are all fixed in casing, use
In the moving range limiting auxiliary wheel fork.
Drivewheel speed measuring module is used for monitoring the rotating speed of friction pulley, by contact plate, contact screw rod, sense contact, drivewheel
Speed measuring module proximity switch, drivewheel speed measuring module mounting bracket and fixing nut and support fixed screw composition.Contact plate
It is installed in the rotating shaft of tested friction pulley, contact plate even circumferential is distributed the screw rod of multiple protrusions, screw rod is installed metal magnetic
Sense contact；Drivewheel speed measuring module proximity switch and drivewheel speed measuring module mounting bracket connect, and are installed on support one end, lead to
Overregulating support installation site makes drivewheel speed measuring module proximity switch and sense contact be maintained in measurable range；Drivewheel
Speed measuring module mounting bracket is installed on fixing guide rail at the scene.
The major function of signal transacting pick-up module is receive auxiliary wheel speed measuring module and drivewheel speed measuring module close
Switching signal, carries out being processed and converted to the transducer signal of standard.Signal transacting pick-up module by controller, keyboard circuit,
Isolation circuit, display circuit, standard signal circuit, serial communication circuit, power circuit, related port and casing composition.Control
Device is the core of signal processing, for the sequential operation to receipt signal；Keyboard circuit connects controller I/O mouth, realizes measurement
The input of parameter；The proximity switch port of the output port of auxiliary wheel speed measuring module and drivewheel speed measuring module connects isolation electricity
Road, isolation circuit connects the I/O mouth of controller；Controller is also electric with display circuit, standard signal circuit and serial communication respectively
Road connects；The display of operation result realized by display circuit；Standard signal circuit carries out D/A conversion, again controller operation result
It is further processed as the standard signal of 4-20mA；Serial communication circuit realizes the conversion of RS-485 signal.Power circuit be used for
State each circuit to be powered, related port realizes input and the output of signal, all the said equipments are all installed in casing.
It is to be realized by monitoring the thickness of friction material that the present invention calculates friction pulley wear intensity.To ensure in actual enforcement
Friction pulley in auxiliary wheel and pipeline in auxiliary wheel speed measuring module is in close contact, and does not produce slip.In this case, rub
Wiping wheel and the linear velocity of auxiliary wheel contact point is identical, and this linear velocity is relevant with radius with the rotating speed of each wheel respectively.Rub
The radius wiping wheel can be gradually reduced with use time, and the material of auxiliary wheel can appropriately selected its radius of guarantee be basically unchanged.
Therefore, the rotating speed of friction pulley and auxiliary wheel is measured respectively by auxiliary wheel speed measuring module and drivewheel speed measuring module, then letter
Number it is input to signal transacting pick-up module it is possible to calculate the real-time radius of friction pulley, i.e. wear intensity.
The method have the benefit that：
The design of the present invention is based on modular mode, actually used can select wherein one or more moulds according to field condition
Block realizes required function, has the characteristics that flexible configuration.In site of deployment, there is control system in itself and rub known to wheel speed
In the case of, only need to configure auxiliary wheel speed measuring module and can achieve friction pulley thickness measure work；In site of deployment, there is control in itself
System processed but friction wheel speed unknown situation under, auxiliary wheel speed measuring module and drivewheel speed measuring module need to be configured；Needing scene aobvious
Show with networking in the case of, signal transacting pick-up module can be increased.
The main element that the present invention is used for realizing measuring task is proximity switch, and signal form is switching value pulse, has
Reliability is high, the strong feature of firm interference performance.
Highly versatile of the present invention, is not limited by friction pulley rubbing surface material, can be used for all frictional wheel drive induction systems
In.
Present configuration is simple, compares existing non-contact displacement transducer and has obvious cost advantage.
Brief description
Fig. 1 is agent structure of the present invention and scheme of installation.
Fig. 2 is auxiliary wheel speed measuring module structural representation of the present invention.
Fig. 3 is drivewheel speed measuring module configuration diagram of the present invention.
Fig. 4 is signal transacting pick-up module principle structure chart.
【Reference numeral explanation】1. driven loads；2. friction pulley；3. friction material layer；4. driving motor；5. friction rotation
Axle；6. fixing nut；7. auxiliary wheel；8. auxiliary wheel speed measuring module casing；9. auxiliary wheel speed measuring module mounting bracket；10. scene
Fixed support；11. contact plates；12. contact screw rods；13. sense contact；14. drivewheel speed measuring module proximity switches；15. actively
Wheel speed measuring module mounting bracket；16. support fixed screws；17. signal transacting pick-up modules；18. signal transacting pick-up module peaces
Dress support；19. auxiliary wheel sense contact；20. auxiliary wheel forks；21. auxiliary wheels test the speed proximity switch；22. wheel fork fixing nuts；
23. springs；24. upper limit cards；25. wheel fork fixing axles；26. spring fixed clips；27. signal ports；28. lower limit cards；29. machines
Shell fixed bit；30. auxiliary wheels stretch out hole；31. input A ports；32. input B ports；33.RS-485 port；34.4-20mA end
Mouthful；35. warning output ports.
Specific embodiment
Below in conjunction with the accompanying drawings the specific embodiment of the present invention is described further.
As shown in figure 1, the present invention includes auxiliary wheel speed measuring module 36, drivewheel speed measuring module 37 and signal transacting pick-up mould
38 3 parts of block, it is respectively mounted the correct position of fixed support 10 at the scene.The installation site of auxiliary wheel speed measuring module 36
Parallel with friction pulley 2, suitably adjusting makes auxiliary wheel 7 and friction material layer 3 be in close contact；The installation position of drivewheel speed measuring module 37
Top setting in friction pulley 2；Signal transacting pick-up module 38 install can adjust according to field condition, with facilitate scene display with
According to connecting input signal, outside signal transacting pick-up module 38, there are two generic ports, input port includes inputting A port 31 He
Input B port 32, it connects the proximity switch signal of auxiliary wheel speed measuring module 36 and drivewheel speed measuring module 37, outfan respectively
Mouth includes RS-485 port 33,4-20mA port 34 and warning output port 35；The driving motor 4 of Transmission system connects friction pulley
2, friction material layer 3 and driven loads 1 are in close contact, and friction pulley 2 rotates and drives driven loads 1 to move, and friction material layer 3 is at any time
Between elapse and gradually wear out, thus causing the radius of friction pulley 2 to reduce.
See Fig. 2, auxiliary wheel speed measuring module of the present invention includes auxiliary wheel 7, sense contact 19, auxiliary wheel fork 20, proximity switch
21st, wheel fork fixing nut 22, spring 23, upper limit card 24, wheel fork fixing axle 25, spring fixed clip 26, signal port 27, lower limit
Position card 28, casing fixed bit 29, auxiliary wheel stretch out hole 30, casing 8 and mounting bracket 9.Casing 8 is fixed on by casing fixed bit 29
In mounting bracket 9, mounting bracket 9 connects live fixed support 10；Auxiliary wheel 7 connects auxiliary wheel fork 20, and auxiliary wheel fork 20 connects
Wheel fork fixing axle 25, wheel fork fixing nut 22 is used for fixing auxiliary wheel fork 20, and auxiliary wheel fork 20 can be with wheel fork fixing axle 25 for circle
The heart rotates；Upper limit card 24 and lower limit card 28 are fixed in casing 8, and its effect is so that auxiliary wheel fork 20 is transported in safety range
Dynamic；Spring 23 is also associated with auxiliary wheel fork 20, one end of spring 23 is stuck on auxiliary wheel fork 20, and the other end is stuck in spring and fixes
On card 26, spring 23 elasticity makes auxiliary wheel fork 20 produce to auxiliary wheel to stretch out the power in hole 30 direction；Auxiliary wheel 7 one circle is provided with gold
Belong to Magnetic Induction contact 19, on auxiliary wheel fork 20, corresponding sense contact 19 direction is also associated with proximity switch 21, and auxiliary wheel 7 rotates
Proximity switch 21 can be made to produce pulse signal, proximity switch 21 one end connects signal port 27.
See Fig. 3, drivewheel speed measuring module of the present invention by fixing nut 6, contact plate 11, contact screw rod 12, sense contact 13,
Proximity switch 14, mounting bracket 15 and fixed screw 16 form.Contact plate 11 connects friction pulley rotating shaft 5, and solid with fixing nut 6
Fixed, with friction pulley 2 synchronous axial system；Contact plate 11 even circumferential is distributed with contact screw rod 12, and sense contact 13 is metal magnetic material
Material, is connected on contact screw rod 12；There is proximity switch 14, it is fixed on one end of mounting bracket 15, peace above sense contact 13
Dress support 15 other end is installed at the scene on support 10 by fixed screw 16；Sense contact 13 contact plate 11 rotates, simultaneously close
Switch 14 generation pulse signal, the cable of proximity switch 14 connects the input B port 32. of signal transacting pick-up module 38
See Fig. 4, signal transacting pick-up module of the present invention is mainly by controller, keyboard circuit, signal isolation circuit, alarm signal
Number circuit, display circuit, standard signal circuit, serial communication circuit, power circuit etc. part forms.In figure input A connects auxiliary
Help wheel speed measuring module signal port 27, input B connect drivewheel speed measuring module proximity switch signal, two signals through optocoupler every
From after be input to controller；The number that controller passes through pulse in program calculation one second can get the rotating speed n of friction pulley 2mWith
The rotating speed n of auxiliary wheel 7f, because being in close contact between two-wheeled, linear velocity V of its contact point is identical, then have relational expression：
V=2 π rmnm=2 π rfnf
Wherein rmAnd rfIt is respectively the radius of friction pulley 2 and the radius of auxiliary wheel 7.Auxiliary wheel 7 is as follower, and friction
The contact pressure of wheel 2 is little, and the wearing coefficient of selected materials is very high, it can thus be assumed that rfA constant value, then friction pulley 2
Radius is in real time：
Thus understanding the wear intensity of friction pulley 2.
See Fig. 4, the major function of keyboard circuit is the ginsengs such as maximum radius, least radius and the alarm limit of input friction pulley 2
Number；Circuit is reported to the police according to the warning bound of setting, and its signal output form is switching value；Standard signal electricity
The signal that controller calculates output is carried out digital-to-analogue conversion, signal transmitting etc. and processes the standard signal being transformed to 4-20mA by road, with
Meet the needs as general purpose instrument；Serial communication circuit is converted to the rs 232 serial interface signal of controller in industrial process conventional
RS-485 signal, in case networking uses；Display circuit, as man machine interface, processes identification and the measurement signal of keyboard input signal
Scene display.
Claims (2)
1. in a kind of induction system being applied to frictional wheel drive friction pulley wear intensity measuring system it is characterised in that：Including
Auxiliary wheel speed measuring module (36), drivewheel speed measuring module (37) and signal transacting pick-up module (38) three part, auxiliary wheel tests the speed
The signal port (27) of module (36) connects the input A port (31) of signal transacting pick-up module (38), drivewheel speed measuring module
Proximity switch (14) connects the input B port (32) of signal transacting pick-up module (38), and signal transacting pick-up module (38) also connects
Connect RS-485 port (33), 4-20mA port (34) and warning output port (35)；Auxiliary wheel speed measuring module (36) includes auxiliary
Wheel (7), auxiliary wheel sense contact (19), auxiliary wheel fork (20), auxiliary wheel test the speed proximity switch (21), wheel fork fixing nut
(22), spring (23), wheel fork fixing axle (25), spring fixed clip (26), upper limit card (24), lower limit card (28), signal end
Mouth (27), casing (8), auxiliary wheel stretch out hole (30) and casing fixed bit (29)；Auxiliary wheel (7) circle distribution is connected with auxiliary
Wheel sense contact (19), auxiliary wheel (7) axle center connects auxiliary wheel fork (20), and auxiliary wheel fork (20) connects auxiliary wheel and tests the speed close to opening
Close (21) and spring (23), spring (23) one end connecting spring fixing card (26), the other end is fixed in auxiliary wheel fork (20), auxiliary
Help wheel fork (20) to be also connected with wheel fork fixing axle (25), wheel fork fixing axle (25), spring fixed clip (26), upper limit card (24), under
Limiting card (28) and auxiliary wheel are stretched out hole (30) and are all connected with casing (8)；Drivewheel speed measuring module (37) includes contact plate
(11), contact screw rod (12), sense contact (13), drivewheel speed measuring module proximity switch (14), drivewheel speed measuring module are installed
Support (15) and fixing nut (6) and support fixed screw (16)；Contact plate (11) circumference connects multiple contacts screw rod respectively
(12), contact screw rod (12) connects sense contact (13), and one end of drivewheel speed measuring module mounting bracket (15) connects drivewheel
Speed measuring module proximity switch (14), the other end is fixed on live support；The friction pulley (2) at contact plate (11) and scene connects, and
Fixing with fixing nut (6).
2. as claimed in claim 1 in a kind of induction system being applied to frictional wheel drive friction pulley wear intensity measuring system
Measuring method it is characterised in that：
1) use mediate contact mode, friction pulley thickness or displacement monitoring are changed into rotation speed monitoring, constant further according to linear velocity
Principle is calculated the real-time thickness value of friction pulley；
2) using the resilient wheel fork of tool connect auxiliary wheel and and live friction pulley contact it is ensured that after the reduction of friction pulley radius still
Can be in close contact with auxiliary wheel, so that linear velocity permanence condition is set up always；
3) in the system that can not know friction wheel speed, the mode using contact plate arranges sense contact, and sense contact is
Sense contact can be directly fixed on friction pulley wheel hub by magnetic force by metallicl magnetic material when mounting condition allows；
4) whole measuring system includes auxiliary wheel speed measuring module, drivewheel speed measuring module and signal transacting pick-up module three part,
Each several part is mutually related and separate, can be according to field condition reasonable selection；
5) signal transacting pick-up module includes current signal, switching signal and the rs 232 serial interface signal port of standard, meets general
Instrument use requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410707094.6A CN104374660B (en) | 2014-11-27 | 2014-11-27 | Friction wheel wear degree monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410707094.6A CN104374660B (en) | 2014-11-27 | 2014-11-27 | Friction wheel wear degree monitoring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104374660A CN104374660A (en) | 2015-02-25 |
| CN104374660B true CN104374660B (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410707094.6A Expired - Fee Related CN104374660B (en) | 2014-11-27 | 2014-11-27 | Friction wheel wear degree monitoring method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644936A (en) * | 2016-12-02 | 2017-05-10 | 广州日滨科技发展有限公司 | Elevator sliding guide shoe liner testing machine |
| CN107328376A (en) * | 2017-07-19 | 2017-11-07 | 天奇自动化工程股份有限公司 | Friction drive device with pressure sensor |
| CN109297729A (en) * | 2018-11-22 | 2019-02-01 | 开平市新丽华电子有限公司 | A kind of resistance to system safety testing device of wheel |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5822127Y2 (en) * | 1978-05-22 | 1983-05-11 | 須賀 蓊 | Metal abrasion resistance tester |
| DE19734388C1 (en) * | 1997-08-08 | 1998-11-12 | Univ Magdeburg Tech | Friction and wear testing device |
| CN203648925U (en) * | 2013-11-18 | 2014-06-18 | 铜陵科达车辆装备有限责任公司 | Non-contact pinch roller detection mechanism for wheel set gear box oil washing machine for railway bullet train |
| CN204330513U (en) * | 2014-11-27 | 2015-05-13 | 江南大学 | A kind of friction pulley wear intensity monitoring system |
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2014
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| CN104374660A (en) | 2015-02-25 |
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