CN105035647A - Scraper conveyer detecting device and method - Google Patents
Scraper conveyer detecting device and method Download PDFInfo
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- CN105035647A CN105035647A CN201510462888.5A CN201510462888A CN105035647A CN 105035647 A CN105035647 A CN 105035647A CN 201510462888 A CN201510462888 A CN 201510462888A CN 105035647 A CN105035647 A CN 105035647A
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000001419 dependent effect Effects 0.000 claims description 38
- 238000006073 displacement reaction Methods 0.000 claims description 34
- 239000011241 protective layer Substances 0.000 claims description 16
- 238000007689 inspection Methods 0.000 claims description 8
- 239000003351 stiffener Substances 0.000 claims description 6
- 239000003245 coal Substances 0.000 abstract description 11
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 229910000792 Monel Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 238000002360 preparation method Methods 0.000 description 1
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- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The invention relates to the field of scraper conveyer detection and discloses a scraper conveyer detecting device and method. The normal component of a magnetic signal in a stress concentration area of a scraper is acquired through magnetic sensors, whether the scraper of a scraper conveyer is to be broken or has been broken is judged according to the intensity of a gradient signal of the normal component, the distances between distance measuring sensors and the scraper are measured through the distance measuring sensors, and whether chain falling or chain breaking occurs to the scraper is judged according to the distances. By the adoption of the scraper conveyer detecting device and method, maintenance staff can be informed in time for maintenance when the scraper is broken or to be broken or chain falling or chain breaking occurs to the scraper, and then accidents such as coal leakage and coal piling are prevented.
Description
Technical field
The present invention relates to scrapper conveyor detection field, particularly, relate to a kind of scrapper conveyor check implement and method of inspection.
Background technology
Scrapper conveyor is widely used in colliery industry and coal electrical travelling industry, particularly coal preparation plant's coal handling system.Due to otherness and the particularity of fortune coal measures system scrapper conveyor operating condition, the breakdown of equipment that common protected mode can not occur this system is effectively carried out the chain rupture fault of available protecting, particularly scrapper conveyor, is jumped the fracture defect of chain fault and scraper plate.Can not Timeliness coverage once jump chain accident, scraper plate is very easily stuck on lower groove runway, causes chain rupture, if and chain rupture accident can not Timeliness coverage, scrapper conveyor chain rupture can be wound around drive wheel, causes the damage of a large amount of chain, cause race coal, coal piling accident simultaneously, cause larger economic loss.Scraper plate fracture simultaneously also can have a strong impact on shaft production, and coal supply shaft production benefit brings economic loss, and serious conditions can cause stopping production.
Summary of the invention
The object of this invention is to provide a kind of scrapper conveyor check implement and method of inspection, this equipment adopts metal magnetic memory detection technology to detect scrapper conveyor, does not damage scraper plate, can detect by real-time online.
To achieve these goals, the invention provides a kind of scrapper conveyor check implement, this equipment comprises: magneto-dependent sensor, for gathering the normal component of scraper plate area of stress concentration magnetic signal; And control setup, for judging according to the gradient signal of described normal component whether the scraper plate of described scrapper conveyor is about to occur or ruptured.
Correspondingly, the present invention also provides a kind of scrapper conveyor method of inspection, and the method comprises: the normal component gathering scraper plate area of stress concentration magnetic signal; And judge that whether the scraper plate of described scrapper conveyor is by rupturing according to the gradient signal of described normal component.
By technique scheme, adopt magneto-dependent sensor, utilize metal magnetic memory detection technology, can judge whether scraper plate is about to occur or ruptured, and then convenient for maintaining personnel keep in repair to scraper plate fault.
Other features and advantages of the present invention are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification sheets, is used from explanation the present invention, but is not construed as limiting the invention with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 shows the structured flowchart of the scrapper conveyor check implement of an embodiment of the present invention;
Fig. 2 shows the structured flowchart of the scrapper conveyor check implement according to another embodiment of the present invention;
Fig. 3 shows the scheme of installation of the scrapper conveyor check implement according to another embodiment of the present invention; And
Fig. 4 shows running state (comprising normal operating condition and the failure operation state) schematic diagram of scrapper conveyor.
Description of reference numerals
1 first pillar stiffener 2 second pillar stiffener
3 upper beam 4 central sills
5 underbeam 6 up-protective layer
7 lower protective layer 10 magneto-dependent sensors
11 first magneto-dependent sensor 12 second magneto-dependent sensors
13 the 3rd magneto-dependent sensor 14 the 4th magneto-dependent sensors
15 scraper plate 16 scratch board machine chains
21 first distance measuring sensor 22 second distance measuring sensors
30 control setup 31 subtracters
32 signal processing circuit 33 embedded chips
40 displacement encoder 41 first displacement encoders
42 second displacement encoder 50 warning devices
60 read out instruments
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
Fig. 1 shows the structured flowchart of the scrapper conveyor check implement of an embodiment of the present invention.As shown in Figure 1, scrapper conveyor check implement can comprise: magneto-dependent sensor 10, for gathering the normal component of scraper plate area of stress concentration magnetic signal; And control setup 30, for judging that according to the gradient signal of described normal component whether the scraper plate of described scrapper conveyor is by rupturing.Wherein, control setup 30, also for when described gradient signal is greater than the first preset value, judges that the scraper plate of scrapper conveyor is by rupturing.Be employed herein metal magnetic memory detection technology to detect scrapper conveyor scraper plate, can realize being about to fracture occur or fracture has occurred to notify that maintainer keeps in repair at scraper plate, and then prevent the accident of running coal, coal piling etc. from occurring.
With further reference to Fig. 1, scrapper conveyor check implement can also comprise: the first distance measuring sensor 21, for measuring the first distance L1 of scraper plate one end; And second distance measuring sensor 22, for measuring the second distance L2 of the described scraper plate other end, control setup 30 is also for judging according to this first distance L1 and second distance L2 whether described scrapper conveyor occurs to jump chain or chain rupture.Wherein, control setup 30 can at the absolute value of the difference of the first distance L1 and described second distance L2 | judge when L1-L2| is greater than the second preset value that described scrapper conveyor occurs to jump chain or chain rupture.
Wherein, magneto-dependent sensor 10 can be HMC1001 or HMC1002, but is not restricted to this.
Fig. 4 shows the running state schematic diagram of scrapper conveyor.With reference to figure 4, scrapper conveyor normal operating condition as shown in phantom in FIG., solid line be scratch board machine chain 16 occur jump chain or chain rupture accident time scraper plate running state.As can be known from Fig. 4, when occurring to jump chain or chain rupture accident, scraper plate 15 can produce and horizontally rotate, the first distance L1 that two distance measuring sensors are measured is the vertical distance of the first distance measuring sensor 21 to scraper plate 15, second distance L2 is the vertical distance of the second distance measuring sensor 22 to non-scraper plate, namely second distance L2 is the vertical distance at dotted line position place in the second distance measuring sensor 22 to Fig. 4, second distance L2 is greater than the first distance L1 (difference of its distance is the thickness of scraper plate 15), therefore can judge whether scrapper conveyor occurs to jump chain or chain rupture accident according to the difference of second distance L2 and the first distance L1.
In addition, scrapper conveyor check implement can also comprise: warning device 50, control setup 30 also for when described scraper plate occurs to jump chain or chain rupture by generation fracture or described scrapper conveyor, controls this warning device 50 and carries out reporting to the police to remind staff to stop scrapper conveyor work immediately.Warning device 50 can be combined aural and visual alarm, sounds during warning, and light is reported to the police and can ruddiness or gold-tinted be reported to the police, and maintainer can report to the police according to different light, the type of failure judgement.But warning device 50 is not restricted to this, it can be any one annunciator known.
Scrapper conveyor check implement can also comprise: displacement encoder 40, for measuring the operation displacement of described scrapper conveyor, displacement difference determination scraper plate between control setup 30 can quit work according to being displaced to during et out of order is about to the position occurring or ruptured or the position judging scrapper conveyor generation jumping chain or chain rupture, namely, judge fault origination point, keep in repair scrapper conveyor to facilitate staff.Here also can use displacement pickup, measure the operation displacement of scrapper conveyor when scrapper conveyor et out of order, maintainer can according to this operation displacement determination fault origination point.
Embodiment one
Described scraper unit is installed on the head of scrapper conveyor when measuring, avoid the transport thing on operational process middle scraper machine to damage magneto-dependent sensor.
Fig. 2 shows the structured flowchart of the scrapper conveyor check implement according to another embodiment of the present invention.As shown in Figure 2, in this embodiment, magneto-dependent sensor 10 can comprise four magneto-dependent sensors, is respectively: the first magneto-dependent sensor 11, second magneto-dependent sensor 12, the 3rd magneto-dependent sensor 13 and the 4th magneto-dependent sensor 14.Displacement encoder 40 can comprise two displacement encoders, is respectively: the first displacement encoder 41 and the second displacement encoder 42.Control setup 30 can comprise: subtracter 31, signal processing circuit 32 and embedded chip 33.In addition, scrapper conveyor check implement can also comprise read out instrument 60.
Fig. 3 shows the scheme of installation of the scrapper conveyor check implement according to another embodiment of the present invention.As shown in Figure 3, scrapper conveyor check implement can also comprise: upper beam 3, and the first displacement encoder 41 and the second displacement encoder 42 are installed on the below of this upper beam 3; Central sill 4, this central sill 4 can comprise up-protective layer 6 and lower protective layer 7, wherein lower protective layer 7 is positioned at the below of up-protective layer 6, first magneto-dependent sensor 11 and the second magneto-dependent sensor 12 are installed on the below of up-protective layer 6, and the 3rd magneto-dependent sensor 13 and the 4th magneto-dependent sensor 14 are installed on the top of lower protective layer 7; Underbeam 5, the first distance measuring sensor 21 and the second distance measuring sensor 22 are installed on the top of this underbeam 5; And first pillar stiffener 1 and the second pillar stiffener 2, be vertically installed on the both sides of upper beam 3, central sill 4 and underbeam 5 respectively, for fixing and supporting upper beam 3, central sill 4 and underbeam 5.Wherein, central sill position and the distance between up-protective layer 6 and lower protective layer 7 are adjustable.
As a kind of optimal way, protective cover adopts monel, and thickness is within 5mm.
When detecting scraper plate; scraper plate is through up-protective layer 6 and lower protective layer 7; measure to make the first displacement encoder 41 and the second displacement encoder 42 and the first magneto-dependent sensor 11 and the second magneto-dependent sensor 12 be positioned at above scraper plate, and the 3rd magneto-dependent sensor 13 and the 4th magneto-dependent sensor 14 and the first distance measuring sensor 21 and the second distance measuring sensor 22 are positioned at below scraper plate and measure.Further, these sensors all can along beam slide control, fixing, to enable these sensors and the most impaired place (place that chain passes) of scraper plate on same plumb bob vertical, and improves the reliability of fault detection.
With further reference to Fig. 2, first magneto-dependent sensor 11, second magneto-dependent sensor 12, the normal component of the scraper plate area of stress concentration magnetic signal that the 3rd magneto-dependent sensor 13 and the 4th magneto-dependent sensor 14 can be gathered is sent to signal processing circuit 32 respectively, by signal processing circuit 32, respectively amplification filtering and analogue to digital conversion are carried out to received normal component magnetic signal, and the signal after process is sent in embedded chip 33, embedded chip 33 calculates the gradient signal of magnetic signal normal component respectively, draw four gradient signals, if when wherein having Grad to be greater than the first preset value, then embedded chip 33 controls warning device 50 and reports to the police, gold-tinted glimmers, according to this type of alarm, maintainer can judge that the scraper plate of scrapper conveyor is by rupturing.In addition, embedded chip 33 can also gather the first displacement signal and the second shifting signal of the scrapper conveyor of the first displacement encoder 41 and the transmission of the second displacement encoder 42, the two is averaged, and determine that scraper plate is about to occur the position of fracture according to scrapper conveyor et out of order to the average displacement difference between quitting work, with convenient for maintaining, personnel keep in repair.
First distance measuring sensor 21 measures the first distance L1 of scraper plate one end, second distance measuring sensor 22 measures the second distance L2 of the scraper plate other end, the signal of the first distance L1 and second distance L2 is sent to subtracter 31, the absolute value that subtraction draws the difference of scraper plate two ends distance is carried out by subtracter 31 | L1-L2|, and this absolute value signal is sent to signal processing circuit 32, by signal processing circuit 32, amplification filtering and analogue to digital conversion are carried out to this absolute value signal, and the signal after this process is sent in embedded chip 33, if when this signal value is greater than the second preset value, then embedded chip 33 controls warning device 50 and reports to the police, red flare, according to this type of alarm, maintainer can judge that scrapper conveyor there occurs and jump chain or chain rupture accident.In addition, embedded chip 33 can also gather the first displacement signal and the second shifting signal of the scrapper conveyor of the first displacement encoder 41 and the transmission of the second displacement encoder 42, the two is averaged, and to the average displacement determination scrapper conveyor between quitting work, the position of jumping chain or chain rupture occurs according to scrapper conveyor et out of order.With convenient for maintaining, personnel keep in repair.
Wherein, embedded chip 33 can select ARM7, but is not restricted to this.
In addition, embedded chip 33 can control read out instrument and show the Grad of the normal component magnetic signal of the scraper plate area of stress concentration calculated, the absolute value of the difference of scraper plate two ends distance and the displacement signal of scrapper conveyor operation, carries out observing and judge to facilitate staff.
Correspondingly, the present invention also provides a kind of scrapper conveyor method of inspection, and the method comprises: the normal component gathering scraper plate area of stress concentration magnetic signal; And judge whether the scraper plate of described scrapper conveyor is about to occur or ruptured according to the gradient signal of the normal component of described magnetic signal.And when described gradient signal is greater than the first preset value, judge that the described scraper plate of described scrapper conveyor is by rupturing.
Scrapper conveyor method of inspection can also comprise: the first distance measuring described scraper plate one end; Measure the second distance of the described scraper plate other end; And second distance judges whether described scrapper conveyor occurs to jump chain or chain rupture according to described first Distance geometry.And judge that when the absolute value of the difference of second distance is greater than the second preset value described in described first Distance geometry described scrapper conveyor occurs to jump chain or chain rupture.
The corresponding test philosophy of scrapper conveyor method of inspection is similar with the test philosophy of above scrapper conveyor check implement, repeats no more here.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out combination in any between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (13)
1. a scrapper conveyor check implement, is characterized in that, this equipment comprises:
Magneto-dependent sensor, for gathering the normal component of scraper plate area of stress concentration magnetic signal; And
Control setup, for judging according to the gradient signal of described normal component whether the scraper plate of described scrapper conveyor is about to occur or ruptured.
2. equipment according to claim 1, is characterized in that, described control setup, also for when described gradient signal is greater than the first preset value, judges that the described scraper plate of described scrapper conveyor is about to occur or ruptured.
3. equipment according to claim 2, is characterized in that,
Described magneto-dependent sensor is four magneto-dependent sensors,
For the output of the normal component of scraper plate area of stress concentration magnetic signal gathered according to described four magneto-dependent sensors, described control setup also judges whether the scraper plate of described scrapper conveyor is about to occur or ruptured, wherein when the gradient signal of any one normal component exported of described four magneto-dependent sensors is greater than the first preset value, judge that the described scraper plate of described scrapper conveyor is about to occur or ruptured.
4. equipment according to claim 1, is characterized in that, described equipment also comprises:
First distance measuring sensor, for measuring first distance of this sensor to described scraper plate one end; And
Second distance measuring sensor, for measuring the second distance of this sensor to the described scraper plate other end,
For second distance according to described first Distance geometry, described control setup also judges whether described scrapper conveyor occurs to jump chain or chain rupture.
5. equipment according to claim 4, is characterized in that, described control setup is also for judging that when the absolute value of the difference of second distance is greater than the second preset value described in described first Distance geometry described scrapper conveyor occurs to jump chain or chain rupture.
6. equipment according to claim 5, is characterized in that, described equipment also comprises:
Displacement encoder, for measuring the operation displacement of described scrapper conveyor;
Described control setup is also for determining the position that described scraper plate is about to occur or ruptured or judging that the position of chain or chain rupture occurs to jump described scrapper conveyor according to described operation displacement.
7. equipment according to claim 6, is characterized in that,
Described displacement encoder is two displacement encoders,
Described control setup is also determined the position that described scraper plate is about to occur or ruptured for the aviation value of the displacement of measuring according to described two displacement encoders or is judged that the position of chain or chain rupture occurs to jump described scrapper conveyor.
8. equipment according to claim 7, is characterized in that, described equipment also comprises:
Upper beam, described displacement encoder is arranged on the below of this upper beam;
Central sill, this central sill comprises up-protective layer and lower protective layer, wherein said magneto-dependent sensor comprises four magneto-dependent sensors, and two magneto-dependent sensors in these four magneto-dependent sensors are installed on the below of described up-protective layer, and other two magneto-dependent sensors are installed on the top of described lower protective layer;
Underbeam, described first distance measuring sensor and described second distance measuring sensor are installed on the top of this underbeam; And
First pillar stiffener and the second pillar stiffener, be vertically installed on the both sides of described upper beam, central sill and underbeam respectively, for fixing described upper beam, central sill and underbeam.
9. according to the equipment in claim 1 to 8 described in any one claim, it is characterized in that, described equipment also comprises:
Warning device;
Described control setup also for described scraper plate be about to occur ruptured or described scrapper conveyor occur jump chain or chain rupture time, control described warning device and report to the police.
10. a scrapper conveyor method of inspection, is characterized in that, the method comprises:
Gather the normal component of scraper plate area of stress concentration magnetic signal; And
Judge whether the scraper plate of described scrapper conveyor is about to occur or ruptured according to the gradient signal of described normal component.
11. methods according to claim 10, is characterized in that, described method also comprises:
When described gradient signal is greater than the first preset value, judge that the described scraper plate of described scrapper conveyor is by rupturing.
12. methods according to claim 10, is characterized in that, described method also comprises:
The first distance measuring sensor is used to measure first distance of this sensor to described scraper plate one end;
The second distance measuring sensor is used to measure the second distance of this sensor to the described scraper plate other end; And
According to described first Distance geometry, second distance judges whether described scrapper conveyor occurs to jump chain or chain rupture.
13. methods according to claim 12, is characterized in that, described method also comprises:
Judge that when the absolute value of the difference of second distance is greater than the second preset value described in described first Distance geometry described scrapper conveyor occurs to jump chain or chain rupture.
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| CN201510462888.5A CN105035647A (en) | 2015-07-31 | 2015-07-31 | Scraper conveyer detecting device and method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107537690A (en) * | 2017-09-30 | 2018-01-05 | 艾尼科环保技术(安徽)有限公司 | A kind of electrostatic precipitator scrapper conveyor broken chain detecting device |
| CN108072533A (en) * | 2017-11-30 | 2018-05-25 | 太原理工大学 | A kind of experimental provision and method for detecting drag conveyor dynamic characteristic |
| CN109051627A (en) * | 2018-09-20 | 2018-12-21 | 宁夏天地奔牛实业集团有限公司 | Mine flight conveyer chain rupture monitoring signals processor |
| CN109051625A (en) * | 2018-09-20 | 2018-12-21 | 宁夏天地奔牛实业集团有限公司 | Mine flight conveyer chain rupture monitoring device |
| CN109051626A (en) * | 2018-09-20 | 2018-12-21 | 宁夏天地奔牛实业集团有限公司 | Mine flight conveyer chain rupture monitors sensor |
| CN110950004A (en) * | 2019-12-12 | 2020-04-03 | 华电重工股份有限公司 | Positioning system, method and device for scraper plate of scraper machine |
| CN111104810A (en) * | 2019-12-16 | 2020-05-05 | 太原理工大学 | Scraper structure fracture monitoring method based on radio frequency identification |
| CN113671506A (en) * | 2021-09-08 | 2021-11-19 | 国家能源集团宁夏煤业有限责任公司 | Scraper conveyor protection device based on ultrasonic ranging principle |
| CN115468848A (en) * | 2022-09-13 | 2022-12-13 | 中国原子能科学研究院 | Testing device, system and method |
| CN116159648A (en) * | 2023-04-21 | 2023-05-26 | 太原科技大学 | Material conveying and transferring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107537690A (en) * | 2017-09-30 | 2018-01-05 | 艾尼科环保技术(安徽)有限公司 | A kind of electrostatic precipitator scrapper conveyor broken chain detecting device |
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| CN111104810A (en) * | 2019-12-16 | 2020-05-05 | 太原理工大学 | Scraper structure fracture monitoring method based on radio frequency identification |
| CN111104810B (en) * | 2019-12-16 | 2023-09-08 | 太原理工大学 | Scraper structure fracture monitoring method of scraper based on radio frequency identification |
| CN113671506A (en) * | 2021-09-08 | 2021-11-19 | 国家能源集团宁夏煤业有限责任公司 | Scraper conveyor protection device based on ultrasonic ranging principle |
| CN115468848A (en) * | 2022-09-13 | 2022-12-13 | 中国原子能科学研究院 | Testing device, system and method |
| CN115468848B (en) * | 2022-09-13 | 2024-02-20 | 中国原子能科学研究院 | Test device, system and method |
| CN116159648A (en) * | 2023-04-21 | 2023-05-26 | 太原科技大学 | Material conveying and transferring device |
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