CN104692077B - A kind of belt haulage band longitudinal tear monitoring device - Google Patents
A kind of belt haulage band longitudinal tear monitoring device Download PDFInfo
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- CN104692077B CN104692077B CN201510049002.4A CN201510049002A CN104692077B CN 104692077 B CN104692077 B CN 104692077B CN 201510049002 A CN201510049002 A CN 201510049002A CN 104692077 B CN104692077 B CN 104692077B
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- sensor
- conveyer belt
- ultrasound wave
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- ultrasonic
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/02—Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load carriers, e.g. for interrupting the drive in the event of overheating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2812/00—Indexing codes relating to the kind or type of conveyors
- B65G2812/02—Belt or chain conveyors
- B65G2812/02128—Belt conveyors
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- Control Of Conveyors (AREA)
- Belt Conveyors (AREA)
Abstract
The present invention relates to conveyer belt monitoring field, more particularly to monitors conveyer belt longitudinal scratch and crack using ultrasonic technology.A kind of belt haulage band longitudinal tear monitoring device, one ultrasonic emitting sensor and a ultrasound wave receive sensor group sensor pair in a pair, a pair or multipair sensor are to immediately below conveyer belt, the ultrasonic emitting sensor of all the sensors pair and ultrasound wave receive sensor and are all linked into central controller, central controller output interface connection alarm device and conveyer on off controller.Central controller is according to whether listen to the feature of ultrasound wave and listened to ultrasonic signal to judge rubber conveyer belt the present situation.
Description
Technical field
The present invention relates to conveyer belt monitoring field, more particularly to monitored using ultrasonic technology conveyer belt longitudinal scratch and
Crack.
Background technology
Ribbon conveyer continuative transport ability is strong, operational efficiency is high, be easily achieved and automatically control, and is widely used for various
The transport of bulk material.Conveyer belt is the important component part of ribbon conveyer, and conveyer belt mainly has plain sail core belt,
Synthetic fibers core belt, Steel cord belt etc..As belt conveyor is towards high speed, extensive, extra long distance, high inclination-angle
Direction develop, Steel cord belt is also increasingly widely used.Steel cable core conveying belt drastically increases stretching
Intensity, but the ability of its longitudinal anti tear is not improved, the only intensity of rubber itself, thus easily cause longitudinal direction and tear
Split.Ribbon conveyer is the large artery trunks of factories and miness production and transport, once there is longitudinal tear, it will bring greatly directly or indirectly
Loss；Especially at high speed, over long distances, the steel cable core conveying belt of high inclination-angle, its loss are bigger.
Conveyer belt longitudinal tear accident happens occasionally, and is worth the even more conveyer belts of millions of units, once there is longitudinal direction
Tear accident, all may be damaged within a very short time, cause huge economic loss.Allow to repair, it is also desirable to quite
Manpower and the time, strong influence is produced to normal production.The usage amount of Chinese belt conveyor was increasing in recent years, its
The scope of application is more and more wider, and the accident that longitudinal tear occurs is also more and more frequent.
In recent years certain research was carried out to the operation theory of adhesive tape, longitudinal tear mechanism and anti-tear application technology both at home and abroad
With exploitation, diversified tear monitoring device is have developed, is summed up：
Imaging method
The method utilizes surface deflection sensor（Ultrasound wave or laser）Survey in " crack ", mainly adopt high-precision ultrasound swash
Sensor, accurately judges length and the width in belt crack, can also monitor the abnormal conditions of belt surface.System is high-precision by CCD
Degree ultrasound line sensor, power supply, cyclelog, general control system, audible-visual annunciator, liquid crystal display, explosion-resistant enclosure and from
The part such as dynamic cleaning device constitutes.After system electrification, the speed of automatic detection belt feeder operation, enters detection state.When belt quilt
Foreign body penetrates and causes belt tear crack, overlaps, leakage coal, bandwidth occur to narrow and during exception sideslip, and detection means can be most
Output trip signal in fast time, the operation for stopping belt feeder concurrently being spoken visual alarm, point out user to take measures.By
Typically poor in induction system running environment, the easy contamination monitoring of dust, muddy water talks investment, so needing to fill using spray washing
Put, periodically the dust on watch-dog surface, dirt are cleaned automatically, can otherwise make thrashing.
Imbedding method
This method is typically with belt or the pre- embedded plain conductor of belt surface, coil, magnetisable material or
It is the methods such as certain conduction, permeability magnetic material, whether testing equipment judges belt by monitoring the integrity of pre-buried thing in belt
Generation longitudinal tear.
The end of the seventies, English, moral begin to the method using plain conductor is buried in belt.But the continuous fortune due to belt
Dynamic, the sustained stress of rolling cut is inevitably resulted from, plain conductor is worn and torn and is ruptured.In order to overcome this shortcoming,
The hollow pipe that the less dacron of Britain's application coefficient of friction is made is enclosed within outside wire, and is vulcanized in rubber conveyer belt,
Wire is protected not produce fatigue damage.
Another for the detection means for burying wire in belt that developed in the past has the disadvantage the rubber on wire and belt
Often chemical reaction is susceptible to because of time length between mixture, so as to destroy the electric conductivity of terminal, cause malfunction
Make.In order to solve this problem, the less zinc-plated steel cable of German diameter as wire, the wire be embedded in carry away from belt and
In the belt upper layer of certain distance, parallel to belt surface.In the connector area of wire, relative wire is tightened mutually, is led
Equivalent end shield at wire terminal has light-alloy sheath, so that wire avoids contact with the rubber composition on belt top, improves
The reliability of system.Also some countries bury conductive rubber, optical fiberss etc. in belt.The shortcoming of such protection device is work
Skill is complicated, Cheng Mugao.In addition, in a sense, due to the problem for having a blending between insert and rubber, if place
Reason is not good at, and can reduce the intensity of belt.
Imbedding method detection means has significant limitation in actual applications：
, such protection device be complex process, high cost；
, the detection of a large amount of belts of installation and operation cannot be applied to；
, easy erroneous judgement, affect production；
, detection material is embedded in due to belt, the maintenance of belt user is put forward higher requirement.
X-ray fluoroscopy method
During x-ray fluoroscopy detector X ray penetrable material, material is anomaly existed if any locality, then pass through the position ray
The decay of intensity will appear from canonical around through the position transmitted intensity decay by value different for normal position.This detection dress
Put by weaving horizontal sheet metal or wire netting in adhesive tape, once longitudinal direction or laterally tear, these sheet metals fractures, X
X ray fluoroscopy x instrument will send alarm signal in time or shut down conveyer.
Advantage：Monitoring accuracy is higher, and misoperation will not occur.
Shortcoming：Need to be stopped production monitoring, and workload is big, affect production；Complex structure, tape liner enter wire netting and increased belt
Cost；Equipment volume is big；There is radiation.
Visit leakage method
Using spy leakage method as longitudinal tear alarm device, after its core concept is generation longitudinal tear, tearing in belt
Splitting place has material to stretch out belt crack or material from leakage.Thereby produce rod type detector, string of a musical instrument formula device, material leakage detection
Device etc..Rod type detector is into trough idler shape, the buffering support below flute profile conveyer belt a rod or tube bending
Form between roller.So, if any the material for piercing through conveyer belt, the material will stir the deflection of flute profile rod, force limit switch or load
Lotus sensor actuation, makes ribbon conveyer shut down.String of a musical instrument formula device is similar with bar type detector, and the device is by nylon wire
As probe, it is placed between impact idler through aperture and is fitted with flute profile band lower surface, one end of line is filled a spring
Limit switch.When the material for piercing through conveyer belt stumbles this line, line is broken or tension force increases, can make limit switch action.
Material leakage detector is made up of pallet, fulcrum, counterweight and switch etc..After conveyer belt is by longitudinal tear, the material on conveyer belt
Leaked in pallet by breach, the weight of material overcomes the weight of counterweight, makes whole device around fulcrum, forces limit
Bit switch action.
It is to be broadened with breach after belt longitudinal tear due to visiting leakage method, so as to cause material to stretch out or the principle for leaking
Based on, so after belt tearing, if belt does not have breach or breach not wide enough, material would not occur and stretch out skin
Band crack or leakage, then this method will be unable to detect.After conveyer belt is by longitudinal tear, only there is material on conveyer belt
And the breach of conveyer belt, when being enough to make material from leakage, this device can just work, and otherwise just be of little use.
Content of the invention
The technical problem to be solved is：How a kind of effective, quick detection conveyer belt is provided longitudinal tearing occurs
The method split and realize device.
The technical solution adopted in the present invention is：A kind of belt haulage band longitudinal tear monitoring device, a ultrasound wave are sent out
Penetrate sensor and ultrasound wave receives sensor group sensor pair in a pair, a pair or multipair sensor are to installed in conveying
Band underface, the ultrasonic emitting sensor of all the sensors pair and ultrasound wave receive sensor and are all linked into central controller,
Central controller output interface connection alarm device and conveyer on off controller.Ultrasound of the central controller to each sensor pair
Ripple emission sensor sends driving pulse, and ultrasonic emitting sensor sends ultrasound wave, and ultrasound wave is by conveyer belt to corresponding
Ultrasound wave receives sensor orientation and propagates, and ultrasound wave receives sensor and monitors ultrasonic signal in real time, and the signal for listening to
Central controller is fed back to, central controller is according to whether the feature for listening to ultrasound wave and listened to ultrasonic signal is come
Judge rubber conveyer belt the present situation.
As a kind of optimal way：Using multipair sensor to, when immediately below conveyer belt, multipair sensor is to peace
The underface of two cross sections of conveyer belt is mounted in, the sensor pair of second cross section is superimposed with the sensor of first cross section
It is staggered；By using multipair sensor pair, shorten ultrasonic emitting sensor and ultrasound wave receive between sensor away from
From being conducive to the transmission of ultrasound wave, it is ensured that the reliability of detection, meanwhile, using install sensor pair on two cross sections,
And making the sensor pair of second cross section be superimposed staggered mode with the sensor of first cross section so that monitoring is wide
Degree covers the bandwidth of whole conveyer belt.
As a kind of optimal way：Central controller is periodically sent out to the ultrasonic emitting sensor of each sensor pair successively
Go out driving pulse, when the ultrasonic emitting sensor of a pair of sensors pair is in work wherein, the ultrasound of other sensors pair
Ripple emission sensor is all in closed mode, it is to avoid ultrasound wave interference between sensor pair.
As a kind of optimal way：The frequency adopted by ultrasonic emitting sensor is for 40KHz-150KHz.Ultrasound wave side
Tropism is good, and penetration capacity is strong, it is easy to obtain compared with the acoustic energy that concentrates, and can be used to finding range, tests the speed, cleans, welding, rubble, sterilization disappear
Poison etc., in medical science, military affairs, industry, agriculturally has a lot of applications.The scope of ultrasound wave is very wide, and ultrasound wave is propagated in media as well
When, intensity weakens with the increase of its propagation distance, this be as ultrasonic energy is absorbed in communication process, the absorption of ultrasound with
Frequency of the density of medium, viscosity, heat conductivity and ultrasound etc. is relevant.And the absorptance of medium is again flat with ultrasonic frequency
Side is directly proportional, thus high frequency ultrasound is abnormal acutely in decay, and ambient temperature can also affect the propagation performance of ultrasound wave in addition.Defeated
Send in the monitoring of band longitudinal tear and protection device, according to the difference of conveyer belt rubber constituent, conveyer belt characteristic and ambient temperature, I
From the ultrasound wave in 40KHz-150KHz frequency ranges, this range effect good directionality, penetration capacity are strong, it is easy to obtain
Compared with the acoustic energy that concentrates.
As a kind of optimal way：Ultrasonic emitting sensor and ultrasound wave receive sensor for wheeled construction, wheeled biography
The tire tread of sensor lower surface of the malleation in conveyors carried band upwards, when conveyer belt runs, wheel sensor is in static friction
Power effect is lower to be rotated.Tire top is formed with conveyer belt lower surface and is in rolling contact area, improves sensor to and conveyer belt between
The communication effect of ultrasound wave.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the schematic diagram for occurring longitudinal tear on conveyer belt；
Fig. 3 is the parts transversely generalized section of Steel cord rubber conveyer belt；
Fig. 4 is the floor map of Steel cord rubber conveyer belt vulcanized joint；
Fig. 5 is the arrangement side of the monitoring of Steel cord rubber conveyer belt longitudinal tear and the wheeled ultrasonic sensor of protection device
Formula；
Fig. 6 is wheel sensor schematic diagram at Fig. 5 section lines 2-2；
Fig. 7 is the hardware block diagram that conveyer belt Longitudinal Surveillance system is realized；
Fig. 8 is the control flow chart that conveyer belt Longitudinal Surveillance system is realized.
Specific embodiment
As depicted in figs. 1 and 2, a kind of belt haulage band longitudinal tear monitoring device, a ultrasonic emitting sensor and
One ultrasound wave receives sensor group sensor pair in a pair, a pair or multipair sensor to immediately below conveyer belt,
The ultrasonic emitting sensor of all the sensors pair and ultrasound wave receive sensor and all access central controller, central controller 30
Output interface connection alarm device and conveyer on off control device.When central controller 30 is sent out to ultrasonic emitting sensor Tn
When going out pumping signal, ultrasonic emitting sensor Tn can produce certain frequency ultrasound wave, and the ultrasound wave injects rubber conveyer belt, warp
Cross rubber conveyer belt upper and lower surface repeatedly to launch, along the cross-section propagation that faces forward perpendicular to adhesive tape traffic direction.Shown in Fig. 1,
If conveyer belt does not occur longitudinal tear, after certain time, ultrasound wave receives sensor Rn and can receive the ultrasound for transmitting
Ripple；Shown in Fig. 2, if conveyer belt occurs longitudinal tear accident, ultrasound wave receives sensor Rn and will not receive ultrasonic signal,
Or, even if receiving, its signal intensity is also weak compared with normal condition a lot, and it is intact compared with conveyer belt to receive the time of signal
When time for spending to grow.Whether longitudinal tear occurs to be exactly the strong and weak and ultrasonic signal according to the ultrasonic signal for receiving
The time of propagation judges.
When reception sensor receives ultrasound wave, so that it may which this reception sensor and paired transmitting sensing are described
Rubber conveyer belt between device is intact；When reception sensor fails to receive expected ultrasonic signal, you can explanation
Rubber conveyer belt between this reception sensor and paired emission sensor there occurs longitudinal tear；Sense when receiving
When device receives fainter ultrasound wave, illustrate that the rubber between this reception sensor and paired emission sensor is defeated
Send band to occur in that deeper cut, but do not penetrate.
When tear or cut situation is detected, device output switching signal, triggering warning immediately, and it is defeated to control adhesive tape
Machine is sent to shut down, so as to avoid tear from further expanding.
Shown in Fig. 3, Fig. 4, it is evenly distributed that rubber conveyer belt 1 coats longitudinal direction by upper rubber cover 5, lower rubber cover 6 and core rubber 7
Galvanized steel wire rope 4 is constituted.Upper rubber cover 5 and lower 6 surface of rubber cover are smooth, but in use, due to being collided and being rubbed
Wipe, surface can become uneven, be the performance for improving rubber conveyer belt, generally add some fabric components wherein, these
Into the conduction that branch weakens ultrasound wave, such as fire retardant.Natural rubber is easier conducting ultrasonic energy, and asynthetic rubber
Conducting ultrasonic energy is just very poor.Generally the easy conducting ultrasonic energy of conveying band joint sulfuration elastomeric material used, this
Material is generally easy to vulcanize the wire rope core with bonding.
Further, the device can also monitor the defect of rubber conveyer belt vulcanized joint, just vulcanizated to one
When joint is detected, if receive sensor receive ultrasonic signal strength weak when, show this reception sensor and with
Pairing emission sensor between exist sulfuration defect, need to vulcanize again；Similarly, in conveyer belt using after a while
Afterwards, substantially weaken if receiving sensor and ultrasonic signal strength being received at certain vulcanized joint, show this joint
The adhesion strength of the Steel cord 4 at place and core rubber 7 reduces, and there is potential safety hazard, reminds user further to detect, therefore, it can carry
Before predict the failure of vulcanized joint.
As shown in figure 5, existing be illustrated by taking four pairs of sensors pair as an example, T1, T2, T3 and T4 are ultrasonic emitting sensings
Device, R1, R2, R3 and R4 are that ultrasound wave receives sensor.T1 and R1, T2 and R2, T3 and R3, T4 and R4, each two are constituted a pair
Sensor pair, totally four pairs.Each sensor wheel faces upwards malleation in carrying belt lower surface, is rotated by conveyer belt, each
Wheel shaft is strictly perpendicular to running direction of conveyor belt, with group in emission sensor and receive sensor wheel axis be located at same defeated
Send on band transverse section.
Shown in Fig. 6, a wheeled ultrasonic sensor is arranged on carrying belt（The conveyer belt of loaded material）Lower section.Tire 84
Lower surface of the malleation in rubber belt conveyor carrying belt 11 upwards, tire 84 can be free under the driving of the quiet power of rubbing of rubber conveyer belt
Rotate；In the presence of normal pressure, the top of tire 84 is in rolling contact area, ultrasonic beam 34 with being formed with 11 lower surface of carrying belt
Realize propagating by the contact area along ultrasound wave axis 36.
The scope of ultrasound wave is very wide, and when ultrasound wave is propagated in media as well, intensity weakens with its propagation distance increase, and this is
As ultrasonic energy is absorbed in communication process, the frequency of the density of the absorption of ultrasound and medium, viscosity, heat conductivity and ultrasound
Rate etc. is relevant.And the absorptance of medium square is directly proportional to ultrasonic frequency again, thus high frequency ultrasound is abnormal acute in decay
Strong, ambient temperature can also affect the propagation performance of ultrasound wave in addition.Monitor in Steel cord rubber conveyer belt longitudinal tear and protect
In protection unit, according to the difference of conveyer belt rubber constituent, conveyer belt characteristic and ambient temperature, we are from 40KHz-150KHz frequencies
Ultrasound wave in the range of rate.
Fig. 7 shows central controller design frame chart.The central controller structure is based on FPGA and ARM platforms, and which is main
By parts such as multi-channel analog signal front end, FPGA signal processing systems, ARM main frames and Peripheral Interfaces.Multichannel analog is believed
Number front end includes ultrasonic emitting receiving circuit, channel selecting module, Signal-regulated kinase and A/D modular converters.Ultrasound wave is sent out
Penetrate receiving circuit for produce excitation ultrasonic sensor high voltage negative pulse, and receive from receive sensor listen to surpass
The sound wave signal of telecommunication, the signal are sent into signal conditioning circuit and are amplified to wait and process, and then carry out A/D turn under the control of FPGA
Change.Channel selection circuit is in order to controlling the switch of ultrasound wave passage.N group radiating circuits are identical, using time-sharing work
Mode.This N roads radiating circuit is arranged to repeated work mode, and the activation sequence of its repetition rate and probe is defeated according to rubber
Depending on sending the concrete conditions such as the width of band, by setting in the main interface parameter setting item of ARM embedded computers.Radiating circuit
Excitation completed by FPGA, when FPGA output burst pulse be added on a certain radiating circuit when, the radiating circuit is just opened
Beginning work.
The process of realization includes：
A pair or multipair sensor pair are installed below Steel cord rubber transport bearing belt；According to rubber conveyer belt
Width, the quality of rubber materials characteristic of rubber conveyer belt determine the spacing between ultrasonic sensor and using ultrasonic sensor pair
Quantity.
FPGA presses some cycles to each channel emission driving pulse, the 1st, n+1,2n+1,3n+1 ... pulse-triggered first is led to
The work of road emission sensor, the 2nd, n+2,2n+2,3n+2 ... pulse-triggered second channel emission sensor works, the 3rd, n+3,
2n+3,3n+3 ... pulse-triggered third channel emission sensor work, the 4th, n+4,2n+4,3n+4 ... pulse-triggered four-way
The work ... n-th, n+n of road emission sensor, 2n+n, 3n+n ... pulse-triggered the n-th channel emission working sensor, so each
Passage circulates work successively.When the radiating circuit of a certain passage is started working, the transmitting of other passages and receiving circuit are all closed
Close.
The control flow of the tear device of Steel cord rubber conveyer belt shown in Fig. 8, first system initialization, training in rotation are simultaneously remembered
Record each channel ultrasonic experienced time tn is received from being transmitted into.After the completion of initialization, certain ultrasonic sensor all the way is gated
Launch ultrasound wave, and start intervalometer and start timing, if receiving sensor does not listen to corresponding transmitting within the tn times
The acoustic signals that sensor emission goes out, show that rubber conveyer belt tears, and master control system produces warning output.If receive passed
Sensor listens to, within the tn times, the acoustic signals that corresponding emission sensor is launched, then master control system is solved to the signal
Analysis, and Monitoring Data is stored, while judging whether the ultrasound wave for receiving occurs wave character compared with the beginning ripple that emission sensor is launched
Parameters variation, if any, then showing that rubber conveyer belt is present abnormal, master control system output is reported to the police.After the tn times terminate, gate next
Passage.
Claims (3)
1. a kind of belt haulage is with longitudinal tear monitoring device, it is characterised in that：Rubber conveyer belt is by upper rubber cover, lower rubber cover
The evenly distributed galvanized steel wire rope in longitudinal direction is coated with core rubber to be constituted, the galvanized steel wire rope of rubber conveyer belt passes through vulcanized joint glue
Connect, a ultrasonic emitting sensor and a ultrasound wave receive sensor group sensor pair in a pair, and multipair sensor is to peace
It is mounted in immediately below conveyer belt, the ultrasonic emitting sensor of all the sensors pair and ultrasound wave receive sensor and all access central control
Device processed, central controller output interface connection alarm device and conveyer on off control device, when central controller is to ultrasound wave
When emission sensor sends pumping signal, ultrasonic emitting sensor can produce certain frequency ultrasound wave, and the ultrasound wave injects rubber
Glue conveyer belt, propagates along the direction perpendicular to adhesive tape traffic direction, after rubber conveyer belt upper and lower surface is repeatedly launched, passes
It is multicast to ultrasound wave and receives sensor, ultrasonic emitting sensor and ultrasound wave receives sensor for wheeled construction, wheel sensor
Tire tread lower surface of the malleation in conveyors carried band upwards, when conveyer belt runs, wheel sensor is in static friction masterpiece
Lower rotation is used, the quality of rubber materials characteristic of width, rubber conveyer belt according to rubber conveyer belt is determined between ultrasonic sensor
Spacing and the quantity using ultrasonic sensor pair, FPGA press some cycles to each channel emission driving pulse, and the 1st, n+1,2n+
1st, 3n+1 ... pulse-triggered first passage emission sensor work, the 2nd, n+2,2n+2,3n+2 ... pulse-triggered second channel
Emission sensor works, the 3rd, n+3,2n+3,3n+3 ... pulse-triggered third channel emission sensor works, the 4th, n+4,2n+
4th, 3n+4 ... pulse-triggered fourth lane emission sensor work ... n-th, n+n, 2n+n, 3n+n ... the n-th passage of pulse-triggered
Emission sensor works, and so each passage circulates work successively, and when the radiating circuit of a certain passage is started working, other lead to
The transmitting in road and receiving circuit are all closed, first system initialization, training in rotation and record each channel ultrasonic from be transmitted into receive institute
The time tn of experience, after the completion of initialization, gates certain ultrasonic sensor transmitting ultrasound wave all the way, and starts intervalometer and start to count
When, if receiving sensor does not listen to, within the tn times, the acoustic signals that corresponding emission sensor is launched, show rubber
Glue conveyer belt tears, and master control system produces warning output, if receiving sensor listens to corresponding within the tn times
The acoustic signals that sensor emission goes out are penetrated, then master control system is parsed to the signal, and stores Monitoring Data, while judging to receive
To ultrasound wave compared with the beginning ripple that emission sensor is launched whether occur waveform feature parameter change, if any, then show rubber convey
There is abnormal, master control system output warning in band, after the tn times terminate, gate next passage；The device can monitor rubber conveyer belt
The defect of vulcanized joint, when detecting to a vulcanized joint for just having vulcanizated, if receive sensor receive super
When acoustic signals intensity is weak, shows between this reception sensor and paired emission sensor, there is sulfuration defect, need
Again to vulcanize, in conveyer belt using after a period of time, if receiving sensor receives ultrasound at certain vulcanized joint
Ripple signal intensity substantially weakens, then show that the Steel cord at this vulcanized joint and the adhesion strength of core rubber reduce, there is safety
Hidden danger, reminds user further to detect.
2. a kind of belt haulage according to claim 1 is with longitudinal tear monitoring device, it is characterised in that：Ultrasonic emitting
The frequency adopted by sensor is for 40KHz-150KHz.
3. a kind of belt haulage according to claim 1 is with longitudinal tear monitoring device, it is characterised in that：Central authorities' control
Device structure is based on FPGA and ARM platforms, including multi-channel analog signal front end, FPGA signal processing systems, ARM main frames and outer
If interface, multi-channel analog signal front end includes ultrasonic emitting receiving circuit, channel selecting module, Signal-regulated kinase and A/
D modular converters, ultrasonic emitting receiving circuit are used for the high voltage negative pulse for producing excitation ultrasonic sensor, and receive from connecing
The ultrasonic electrical signal that sensor is listened to is received, the signal is sent into signal conditioning circuit and is amplified process, then FPGA's
A/D conversions are carried out under control, and in order to control the switch of ultrasound wave passage, radiating circuit is identical to channel selecting module circuit
, using time sharing mode, radiating circuit is arranged to repeated work mode, the activation sequence of its repetition rate and probe
Depending on according to the width of rubber conveyer belt, by setting in the main interface parameter setting item of ARM embedded computers, radiating circuit
Excitation completed by FPGA, when FPGA output burst pulse be added on a certain radiating circuit when, the radiating circuit is just opened
Beginning work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510049002.4A CN104692077B (en) | 2015-01-30 | 2015-01-30 | A kind of belt haulage band longitudinal tear monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510049002.4A CN104692077B (en) | 2015-01-30 | 2015-01-30 | A kind of belt haulage band longitudinal tear monitoring device |
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| CN104692077A CN104692077A (en) | 2015-06-10 |
| CN104692077B true CN104692077B (en) | 2017-03-15 |
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| CN201510049002.4A Expired - Fee Related CN104692077B (en) | 2015-01-30 | 2015-01-30 | A kind of belt haulage band longitudinal tear monitoring device |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106124619A (en) * | 2016-03-29 | 2016-11-16 | 中北大学 | A kind of belt ultrasound detection wheel seach unit group |
| JP6939271B2 (en) * | 2017-08-31 | 2021-09-22 | 横浜ゴム株式会社 | Conveyor belt monitoring system |
| CN108082886B (en) * | 2018-01-15 | 2024-03-15 | 洛阳威尔若普检测技术有限公司 | Automatic monitoring system and method for steel wire rope core conveyor belt |
| CN108082887A (en) * | 2018-01-19 | 2018-05-29 | 天津工业大学 | A kind of conveyer band discerption failure detector based on radar range finding technology |
| CN114751138A (en) * | 2022-03-09 | 2022-07-15 | 国家能源集团国源电力有限公司 | Belt longitudinal tearing monitoring system and conveying equipment |
| CN118090924B (en) * | 2024-04-25 | 2024-07-09 | 广东汕头超声电子股份有限公司 | Detection method for longitudinal tear seam of conveyor belt |
| CN118220762B (en) * | 2024-05-27 | 2024-07-16 | 山西顺联科技股份有限公司 | Mining safety monitoring device and monitoring method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934924A (en) * | 2010-04-22 | 2011-01-05 | 煤炭科学研究总院上海分院 | Detection method for longitudinal tearing of conveying belt |
| CN102745478A (en) * | 2011-04-21 | 2012-10-24 | 澳枫(上海)控制技术有限公司 | Belt conveyor longitudinal tear detector and detection method |
| WO2014179560A1 (en) * | 2013-05-01 | 2014-11-06 | Joy Mm Delaware, Inc. | Conveyor carriage position monitoring |
| CN103935729B (en) * | 2014-04-15 | 2016-02-03 | 天地（常州）自动化股份有限公司 | Based on hypracoustic rubber belt longitudinal tearing of conveyer checking system and method for inspection |
| CN204124749U (en) * | 2014-07-26 | 2015-01-28 | 长治市同诚机械有限公司 | A kind of belt tearing detector |
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