CN106842918A - A kind of computational methods of the real-time coal amount of drag conveyor - Google Patents
A kind of computational methods of the real-time coal amount of drag conveyor Download PDFInfo
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- CN106842918A CN106842918A CN201611271965.XA CN201611271965A CN106842918A CN 106842918 A CN106842918 A CN 106842918A CN 201611271965 A CN201611271965 A CN 201611271965A CN 106842918 A CN106842918 A CN 106842918A
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- 238000000205 computational method Methods 0.000 title claims abstract description 15
- 238000005065 mining Methods 0.000 claims abstract description 29
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- 238000005303 weighing Methods 0.000 claims abstract description 11
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
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Abstract
The present invention relates to Coal Mining Technology field, the computational methods of specifically a kind of real-time coal amount of drag conveyor.Existing method is that the coal amount on elevating conveyor is detected by the coal amount scanning sensor on elevating conveyor, and the current coal amount on drag conveyor is inferred to by this data.Although the method precision is higher, there is certain hysteresis quality.The present invention is by mining height of coal mining machine, the speed of travel, section deep, electric current, the data acquisitions such as drag conveyor electric current, voltage, the speed of service, realize the calculating of the real-time coal amount of drag conveyor, computational methods are made with amendment with reference to the coal amount scanner on elevating conveyor, it is ensured that coal weighing method is accurate in real time.It is an advantage of the invention that：The computational methods of design are scientific and reasonable, reaction coal amount data are accurate in real time, realize the calculating to the real-time coal amount of drag conveyor, the coal amount data of drag conveyor grasped in real time, to provide data basis according to coal amount automatic speed regulation in drag conveyor running.
Description
Technical field
The present invention relates to drag conveyor intelligent speed-regulating technical field during underground coal mine Mining Transport, specifically
A kind of computational methods of the real-time coal amount of drag conveyor.
Background technology
When underground coal mine Seams are exploited, raw coal is transported work by drag conveyor by scraper plate chain movement
Face, the extensive use on drag conveyor with converter technique so that turned into according to the current coal amount intelligent speed-regulating of drag conveyor
May, this collection and calculating just to the real-time coal amount data of drag conveyor proposes requirement higher.Existing method is to pass through
The coal amount on coal amount scanning sensor detection elevating conveyor on elevating conveyor, drag conveyor is inferred to by this coal amount
On coal amount.Although the method precision is higher, there is certain hysteresis quality, i.e., can only be counted after coal is unloaded and falls elevating conveyor
Coal output is calculated, the real-time coal amount of drag conveyor for reflecting has certain hysteresis quality.In order to grasp drag conveyor in real time
Coal amount and load state, be easy to carry out speed governing to it according to drag conveyor real time load, reach drag conveyor application
Green, energy-conservation purpose are realized in journey, a kind of computational methods of the real-time coal amount of drag conveyor have been invented.
The content of the invention
The purpose of the present invention is to invent a kind of computational methods of the real-time coal amount of drag conveyor, accurately perceives drag conveyor
Current coal amount in running, is easy to be applied in drag conveyor real-time speed regulating.
The technical solution adopted by the present invention is：A kind of computational methods of the real-time coal amount of drag conveyor, are adopted using coal-winning machine
Mining height, section deep, speed of travel, position, electric current, direction, drag conveyor motor speed, input current, hydraulic pressure branch during coal
Frame elapses step pitch, coal amount data of coal amount scanner detection etc., and in summary data calculate the real-time coal amount of drag conveyor.One
The computational methods of the real-time coal amount of drag conveyor are planted, is comprised the following steps：
1. coal amount data computing system 1 is by coal-winning machine control system 2, support electricity hydraulic control system 3, drag conveyor frequency conversion
Mining height, section deep, speed of travel, position, electric current, direction during the collection coal mining of coal-winning machine 6 such as controller 4, coal amount scanner 5,
The speed of service of drag conveyor 7, input current, the passage step pitch of hydraulic support 9, the coal of coal amount scanner 5 on elevating conveyor 8
The data such as amount data, data basis are provided for coal amount data are calculated.
2. the data such as step pitch are elapsed by mining height of coal mining machine, section deep, speed of travel, position, electric current, direction and hydraulic support
Build the Mathematical Modeling of the real-time coal weighing of drag conveyor：
K coalings coefficient, Q for coal-winning machine in formula1It is the coal amount that coal-winning machine is calculated, t0On the basis of time, t1It is the time of coalingging
Point, t2It is real-time time, v1The coal-winning machine speed of service, v2The drag conveyor speed of service, H mining height of coal mining machine, D coal-winning machines cut deep,
Lt0It is t0Moment coal winning machine position.
3. the relation for existing with load by drag conveyor electric current calculates the coal amount on drag conveyor.Because scraper plate
Conveyer load change factor only have coal amount change, also drag conveyor flexibility, working face condition change etc. its
His factor, so only accounting for a real-time coal amount part according to the coal amount that curent change is calculated.
4. the real-time coal amount of drag conveyor is calculated according to working face condition and each machine operation：
Q=pQ1+(1-p)Q2
Q real-time coal amount of drag conveyor, Q obtained by calculating in formula1The real-time coal amount of drag conveyor calculated by coal-winning machine,
Q2Drag conveyor coal amount is calculated by drag conveyor real-time current, p is that coal-winning machine calculates the ratio that coal amount accounts for real-time coal weighing
Weight.
5. the scraper plate conveying that the drag conveyor coal amount for calculating is detected with the coal amount scanner being arranged on elevating conveyor
The coal amount of synchronization is compared on machine, each parameter when long-time has larger difference in Adjustable calculation method, it is ensured that
The accuracy of result of calculation.
Coal amount data computing system 1 gathers the real-time of coal-winning machine 6 by real-time data communication from coal-winning machine control system 2
The information, meter such as data, the speed of travel, two rocking arms height, coal-winning machine current location and coal-winning machine cut electric current including coal-winning machine
Calculate mining height of coal mining machine, cut the information such as deep.
Coal amount data computing system 1 and hydraulic support electricity hydraulic control system 3 gather the passage step pitch of hydraulic support 9, according to pushing away
Walk cuts deep, and the cut electric current and the speed of travel for passing through coal-winning machine away from coal-winning machine current location information calculates coal-winning machine
Cut deep as auxiliary parameter checking.
It is defeated that coal amount data computing system 1 obtains each variable-frequency motor of drag conveyor 7 by drag conveyor frequency-variable controller 4
Enter electric current, motor speed etc., the current operation speed of drag conveyor is calculated with information such as variable-frequency motor rotating speed, decelerator no-load voltage ratios
Degree, the input current of variable-frequency motor is the reaction directly perceived of drag conveyor load state, due to except the outside the pale of civilization influence scraper plate of coal quantitative change
The factor of conveyer input current change is more, so input current is only used as reacting the auxiliary ginseng of the real-time coal amount of drag conveyor
Number.
Coal amount scanner 5 coal amount data of the collection of coal amount data computing system 1 on elevating conveyor 8, as coal amount number
According to the checking of computing system result of calculation, when the result exist deviation it is larger when, other gathered datas, system in integrated system
Automatic corrected parameter is set, so as to ensure the accurate of result of calculation.
The present invention is reasonable in design, and it is convenient to realize, each data is gathered using the existing equipment of fully-mechanized mining working, by computer
Technology realizes the calculating to the real-time coal amount of drag conveyor, can in real time grasp the coal amount data of drag conveyor, is defeated scraper plate
Send in machine running and provide data basis according to the automatic speed regulation of coal amount.
Brief description of the drawings
Fig. 1 is system diagram of the invention.
Fig. 2 is the flow chart of the real-time coal weighing of drag conveyor.
Fig. 3 is the curve map that the real-time coal amount of drag conveyor is calculated by coal-winning machine.
In figure：1 coal amount data computing system, 2 coal-winning machine control systems, 3 supports electricity hydraulic control system, 4 drag conveyors become
Frequency controller, 5 coal amount scanners, 6 coal-winning machines, 7 drag conveyors, 8 elevating conveyors, 9 hydraulic supports.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings：
As shown in Figure 1, a kind of computational methods of the real-time coal amount of drag conveyor, involved equipment includes coal amount data meter
Calculation system 1, coal-winning machine control system 2, support electricity hydraulic control system 3, drag conveyor frequency-variable controller 4, coal amount scanner 5 is adopted
Coal machine 6, drag conveyor 7, elevating conveyor 8, hydraulic support 9.Coal amount data computing system 1 is operated on a flame proof computer,
At crossheading equipment train, become by communication acquisition coal-winning machine control system 2, support electricity hydraulic control system 3, drag conveyor
Depending on the data of frequency controller 4, coal amount scanner 5, communications protocol and interface are according to each associate device.Coal-winning machine control system 2
From the data such as Real-time Collection mining height, section deep, speed of travel, position, electric current, direction on coal-winning machine 6.Support electricity hydraulic control system 3 is adopted
Collect the data such as passage step pitch, the supporting height of each hydraulic support 9.Drag conveyor frequency-variable controller 4 gathers each variable-frequency motor
Input current, motor speed etc..Coal amount scanner 5 is arranged on elevating conveyor 8, the coal amount unloaded on detection drag conveyor, inspection
Survey result to compare with last stage coal amount on drag conveyor, verify the accuracy of result of calculation.
1st, coal-winning machine cuts deep determination
The passage step pitch of hydraulic support is that coal-winning machine cuts deep reflection directly perceived in theory, under actual condition, due to branch
The passage method and sensor error reason of frame, passage step pitch and coal-winning machine cut and deep occasionally there are larger error.Coal-winning machine cuts deep
There is linear relationship with cut current relationship：
I=aD+b
I coal-winning machine cut electric currents
A slopes
B coal-winning machines zero load cut electric current
D coal-winning machines cut deep
A, b in formula can determine that according to actual condition.Formula can be according to coal mining machine roller cut electric current to hydraulic pressure after determining
The passage step pitch (i.e. coal-winning machine cuts deep) of support is compensated.When cut electric current long-time and a section deep mismatch, then according to electric current
The coal-winning machine used during Adjustable calculation coal amount cuts deep numerical value.
2nd, according to coal-winning machine ruuning situation to the real-time coal weighing of drag conveyor
Coal amount data computing system 1 carries out real-time coal on calculating drag conveyor according to the coal-winning machine service data for detecting
Amount.According to coal-winning machine ruuning situation, the coal amount under the cumulative calculation coal-winning machine cut of coal amount data computing system 1 is by coalingging
Number is calculated and adds up coal amount on drag conveyor, and the coal amount that removing drag conveyor is laid down on this basis is the reality of drag conveyor
When coal amount.It is calculated as follows：
1., coal-winning machine runs in the middle part of drag conveyor
When coal-winning machine runs to tail direction,
When coal-winning machine runs to heading,
K coal-winning machines are coaling coefficient
Q1For the coal amount that coal-winning machine is calculated
t0On the basis of the time
t1It is time point of coalingging
t2It is real-time time
v1The coal-winning machine speed of service
v2The drag conveyor speed of service
H mining height of coal mining machine
D coal-winning machines cut deep
Lt0 t0Moment coal winning machine position
2., coal-winning machine runs to tail inverted running
After drag conveyor is run to tail, reversely run to head,
K coal-winning machines are coaling coefficient
Q1For the coal amount that coal-winning machine is calculated
t0On the basis of the time
t1It is time point of coalingging
t2It is real-time time
v1The coal-winning machine speed of service
v2The drag conveyor speed of service
H mining height of coal mining machine
D coal-winning machines cut deep
Lt0 t0Moment coal winning machine position
L face lengths
3., coal-winning machine runs to head inverted running
After drag conveyor is run to head, reversely run to tail,
K coal-winning machines are coaling coefficient
Q1For the coal amount that coal-winning machine is calculated
t0On the basis of the time
t1It is time point of coalingging
t2It is real-time time
v1The coal-winning machine speed of service
v2The drag conveyor speed of service
H mining height of coal mining machine
D coal-winning machines cut deep
Lt0 t0Moment coal winning machine position
Coal amount data computing system 1 chooses above computing formula based on above method by coal-winning machine real time position.
T in formula0The selection at moment can be changed by the coal-winning machine cycle of operation, but t0It is necessarily less than t1。
3rd, the real-time coal weighing of drag conveyor
When drag conveyor runs under conditions of straight, no objective factor, in the case that speed is certain in theory
Electric current is linear with real-time coal amount, i.e.,：
I2Drag conveyor electric current
Q2The real-time coal amount of drag conveyor according to Current calculation
M coefficients
I0Drag conveyor no-load current
According to drag conveyor flexibility in the process of running, the ratio of the real-time coal amount of Current calculation is adjusted, draw meter
The real-time coal amount for calculating drag conveyor is as follows：
Q=pQ1+(1-p)Q2
Q calculates the gained real-time coal amount of drag conveyor
Q1The real-time coal amount of drag conveyor calculated by coal-winning machine
Q2Drag conveyor coal amount is calculated by drag conveyor real-time current
P coal-winning machines calculate the proportion that coal amount accounts for real-time coal weighing
After raw coal is discharged to elevating conveyor by drag conveyor, system is to t1When the coal amount that calculates detected with coal amount scanner 5
Coal amount be compared, when calculating coal value and detected value and there is larger difference for a long time, result of calculation is carried out in proportion
Amendment.
Claims (4)
1. computational methods of the real-time coal amount of a kind of drag conveyor, it is characterised in that：Comprise the following steps：
1. coal amount data computing system (1) is become by coal-winning machine control system (2), support electricity hydraulic control system (3), drag conveyor
Frequency controller (4), coal amount scanner (5) etc. gather mining height during coal-winning machine (6) is mined, cut the deep, speed of travel, position, electricity
Stream, direction, drag conveyor (7) speed of service, input current, hydraulic support (9) passage step pitch, on elevating conveyor (8)
The data such as coal amount scanner (5) coal amount data, provide data basis for coal amount data are calculated；
2. the data such as step pitch are elapsed by mining height of coal mining machine, section deep, speed of travel, position, electric current, direction and hydraulic support to build
The Mathematical Modeling of the real-time coal weighing of drag conveyor：
K coalings coefficient, Q for coal-winning machine in formula1It is the coal amount that coal-winning machine is calculated, t0On the basis of time, t1It is time point of coalingging, t2For
Real-time time, v1The coal-winning machine speed of service, v2The drag conveyor speed of service, H mining height of coal mining machine, D coal-winning machines cut deep, Lt0It is t0
Moment coal winning machine position；
3. the relation for existing with load by drag conveyor electric current calculates the coal amount on drag conveyor.Because scraper plate is conveyed
Machine load change factor only have coal amount change, also drag conveyor flexibility, working face condition change etc. other because
Element, so only accounting for a real-time coal amount part according to the coal amount that curent change is calculated；
4. the real-time coal amount of drag conveyor is calculated according to working face condition and each machine operation：
Q=pQ1+(1-p)Q2
Q real-time coal amount of drag conveyor, Q obtained by calculating in formula1The real-time coal amount of drag conveyor calculated by coal-winning machine, Q2By
Drag conveyor real-time current calculates drag conveyor coal amount, and p is that coal-winning machine calculates the proportion that coal amount accounts for real-time coal weighing；
5. on the drag conveyor that the drag conveyor coal amount for calculating is detected with the coal amount scanner being arranged on elevating conveyor
The coal amount of synchronization is compared, each parameter when long-time has larger difference in Adjustable calculation method, it is ensured that calculated
The accuracy of result.
2. computational methods of the real-time coal amount of a kind of drag conveyor according to claim 1, it is characterised in that by mining
It is real-time that the data such as machine mining height, section deep, speed of travel, position, electric current, direction and hydraulic support passage step pitch build drag conveyor
The Mathematical Modeling of coal weighing.
3. computational methods of the real-time coal amount of a kind of drag conveyor according to claim 1, it is characterized in that, according to working face
The real-time coal amount Q of drag conveyor that condition and the adjustment of each machine operation are calculated according to coal-winning machine operation1Account for real-time coal amount Q's
Proportion.
4. computational methods of the real-time coal amount of a kind of drag conveyor according to claim 1, it is characterized in that, scanned by coal amount
Instrument verifies the real-time coal weighing method of drag conveyor.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107697598A (en) * | 2017-10-12 | 2018-02-16 | 中煤张家口煤矿机械有限责任公司 | A kind of frequency conversion drag conveyor Intelligent speed-adjustable control system |
| CN108491360A (en) * | 2018-02-26 | 2018-09-04 | 北京天地玛珂电液控制系统有限公司 | A kind of computational methods of coal mining output |
| CN108910405A (en) * | 2018-04-13 | 2018-11-30 | 宁夏天地奔牛实业集团有限公司 | Coal seam height controller and its working method on pit mining drag conveyor |
| CN110033128A (en) * | 2019-03-18 | 2019-07-19 | 西安科技大学 | Drag conveyor loaded self-adaptive prediction technique based on limited Boltzmann machine |
| CN110040472A (en) * | 2019-04-25 | 2019-07-23 | 连云港天明装备有限公司 | A kind of fully-mechanized mining working frequency conversion scratch board conveyor automatic speed governing device and its method |
| CN111689170A (en) * | 2020-06-17 | 2020-09-22 | 青岛中加特电气股份有限公司 | Scraper conveyor and self-adaptive speed regulation method thereof |
| CN111897376A (en) * | 2020-06-10 | 2020-11-06 | 常州联力自动化科技有限公司 | Automatic speed regulation method for conveyor and coal mining machine without coal flow sensor |
| CN112340387A (en) * | 2020-09-30 | 2021-02-09 | 中煤科工集团上海有限公司 | Belt conveyor intelligent control system and control method based on machine vision |
| CN114988024A (en) * | 2022-06-09 | 2022-09-02 | 北京天地华泰矿业管理股份有限公司 | Fully mechanized coal mining face scraper conveying speed regulation control system and method |
| CN116916193A (en) * | 2023-09-12 | 2023-10-20 | 苏州爱雄斯通信技术有限公司 | Coal mining data transmission method for multi-platform collaborative operation |
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| CN110040472A (en) * | 2019-04-25 | 2019-07-23 | 连云港天明装备有限公司 | A kind of fully-mechanized mining working frequency conversion scratch board conveyor automatic speed governing device and its method |
| CN111897376A (en) * | 2020-06-10 | 2020-11-06 | 常州联力自动化科技有限公司 | Automatic speed regulation method for conveyor and coal mining machine without coal flow sensor |
| CN111689170A (en) * | 2020-06-17 | 2020-09-22 | 青岛中加特电气股份有限公司 | Scraper conveyor and self-adaptive speed regulation method thereof |
| CN111689170B (en) * | 2020-06-17 | 2021-11-30 | 青岛中加特电气股份有限公司 | Scraper conveyor and self-adaptive speed regulation method thereof |
| CN112340387A (en) * | 2020-09-30 | 2021-02-09 | 中煤科工集团上海有限公司 | Belt conveyor intelligent control system and control method based on machine vision |
| CN114988024A (en) * | 2022-06-09 | 2022-09-02 | 北京天地华泰矿业管理股份有限公司 | Fully mechanized coal mining face scraper conveying speed regulation control system and method |
| CN116916193A (en) * | 2023-09-12 | 2023-10-20 | 苏州爱雄斯通信技术有限公司 | Coal mining data transmission method for multi-platform collaborative operation |
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