CN104358587A - Adverse feedback conveying system for working face of underground coal mine - Google Patents
Adverse feedback conveying system for working face of underground coal mine Download PDFInfo
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- CN104358587A CN104358587A CN201410520859.5A CN201410520859A CN104358587A CN 104358587 A CN104358587 A CN 104358587A CN 201410520859 A CN201410520859 A CN 201410520859A CN 104358587 A CN104358587 A CN 104358587A
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- coal
- conveyor
- drag conveyor
- winning machine
- control cabinet
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/06—Transport of mined material at or adjacent to the working face
- E21F13/063—Loading devices for use in mining
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
Abstract
The invention relates to an adverse feedback conveying system for a working face of an underground coal mine, and a control method of the system. The adverse feedback conveying system includes a coal cutter, a scraper conveyer, a transferring machine, a crusher and a belt conveyor, and is characterized by further including a control box respectively connected with the belt conveyor, the crusher, the transferring machine and the scraper conveyer, a coal quantity detection device mounted on the transferring machine, and a coal cutter positioning device, wherein the coal quantity detection device is connected with the control box, so as to provide transported coal information of the transferring machine; the coal cutter positioning device is connected with the control box, so as to provide position and forward direction information of the coal cutter relative to the scraper conveyer. After the adoption of the conveying system and the control method provided by the invention, starting signals of the belt conveyor, the crusher, the transferring machine and the scraper conveyer can be sent sequentially through the control box, so that the pressing and slipping can be avoided, equipment wear and power loss during low-load operation of the equipment can be reduced, the coal cutting efficiency is improved, and the requirement for coal cutting on the working face can be met.
Description
Technical field
The present invention relates to a kind of underground coal mine working face equipment against reaction type induction system and control method thereof.
Background technology
For the work plane conveying equipment of colliery pit mining, it is all that rear stage plant capacity, freight volume are all greater than previous stage equipment in the design substantially at present, and load is all permanent rotary speed working after device power-up, so not only add power consumption unnecessary in coal mine user equipment purchase cost and equipment running process, and coal work efficiency is low.Tracing it to its cause is that face condition is extremely complicated, the bad adaptability of a lot of monitoring device, is difficult to collect real work face coal mining course work information, and then the accurate control that cannot realize the work plane conveying equipment speed of service according to load situation of change.
Summary of the invention
An object of the present invention is to provide a kind of underground coal mine working face equipment against reaction type induction system, can reach reduction equipment service wear and power attenuation, improves the object of whole work plane conveying equipment operating efficiency;
Two of object of the present invention is to provide the control method of a kind of underground coal mine working face equipment against reaction type induction system.
A kind of underground coal mine working face equipment is against reaction type induction system, comprise coal-winning machine, drag conveyor, elevating conveyor, crushing engine and conveyor, its special feature is: also comprise control cabinet, this control cabinet respectively with described conveyor, crushing engine, elevating conveyor is connected with drag conveyor, also comprise the coal amount detecting device be arranged on elevating conveyor, this coal amount detecting device is connected with control cabinet thus can provides the fortune coal amount information of elevating conveyor, also comprise coal-winning machine positioner, this coal-winning machine positioner is connected with control cabinet thus the position that coal-winning machine can be provided relative to drag conveyor and direction of advance information.
Wherein also comprise drive division monitoring device, this drive division monitoring device is connected with the drive division of described elevating conveyor, the drive division of drag conveyor respectively thus obtains its moment information, and this drive division monitoring device is also connected with control cabinet.
Wherein control cabinet is connected respectively by the drive division of frequency converter with elevating conveyor and drag conveyor, thus can adjust the chain speed of drag conveyor and elevating conveyor.
Wherein control cabinet adopts programmable controller PLC or programmable operations terminal.
Wherein coal-winning machine positioner comprises the RF transmitter be arranged on coal-winning machine backplate, and at least two infrared receivers be arranged on hydraulic support column, wherein all infrared receivers are all connected with wired or wireless transmitting device, this wired or wireless transmitting device is connected with control cabinet, thus obtains coal-winning machine relative to the position of drag conveyor and direction of advance information.
Underground coal mine working face equipment is against a control method for reaction type induction system, and its special feature is, comprises the steps:
(1) first before coal-winning machine start, first its positional information is fed back to control cabinet by coal-winning machine, and after start, coal-winning machine uploads its operating position information to control cabinet in real time;
(2) coal amount detecting device is by the coal amount on the instantaneous elevating conveyor of scanning, and each instantaneous coal amount informix is become the fortune coal amount information of the elevating conveyor in interval sometime, by this information feed back to control cabinet;
(3) after the fortune coal amount information of all coal-winning machine operating positions information collected, elevating conveyor processes by control cabinet, frequency converter as required to elevating conveyor drive division, drag conveyor drive division sends the instruction adjusting drag conveyor, elevating conveyor chain speed, and makes the rotating speed phase coadaptation between scrapper conveyor with elevating conveyor.
Also will pass through drive division monitoring device after step (2), the consumption moment information in the device start of collection drag conveyor and elevating conveyor and uptime interval, Real-time Feedback is to control cabinet; In step (3), control cabinet also will process the above-mentioned consumption moment information collected.
Wherein the fortune coal amount information of elevating conveyor is specifically comprised the steps: with process
(1), elevating conveyor is opened;
(2), open drag conveyor, the control system of frequency converter starts to start, and makes drag conveyor stable operation;
(3), by coal amount detecting device detect the coal amount on elevating conveyor, obtain coal amount data;
(4), by the coal amount data feedback obtained calculate current fortune coal amount to control cabinet, then compare with default value and export control instruction accordingly;
(5), by control instruction be transferred to drag conveyor frequency converter, thus control the speed of service of drag conveyor;
Step (3), (4) and (5) specifically comprise the steps: first by the scanning laser sensor installed on elevating conveyor, coal seam profiled outline on scanning elevating conveyor, detect the coal seam thickness signal on elevating conveyor, by this signal feedback to the control cabinet of drag conveyor, passing ratio integration or calculus calculate current fortune coal amount and compare with the fortune coal amount preset, according to comparative result, the control cabinet output order of drag conveyor controls drag conveyor frequency converter, frequency converter sends the head motor that signal controls drag conveyor, tail motor, thus control the chain speed of drag conveyor,
Compare with default value in step (4) and export control instruction accordingly and specifically refer to: transport that coal amount is greater than specified freight volume when the elevating conveyor detected 80%, drag conveyor runs according to specified chain speed; When the elevating conveyor fortune coal amount detected is the 60%-80% of specified freight volume, drag conveyor chain speed is set to 80% specified chain speed; When the elevating conveyor fortune coal amount detected is the 40%-60% of specified freight volume, drag conveyor chain speed is set to 60% specified chain speed; When the elevating conveyor fortune coal amount detected is the 30%-40% of specified freight volume, drag conveyor chain speed is set to 40% specified chain speed; When the elevating conveyor fortune coal amount detected is less than 30% of specified freight volume, drag conveyor chain speed is set to 30% specified chain speed.
Wherein coal-winning machine operating position information and process are specifically comprised the steps:
First coal-winning machine positioner is utilized, determine that coal-winning machine is relative to the position of drag conveyor and direction of advance information, then by wired or wireless mode by this information transmission to control cabinet, thus analysis meter calculates the optimized operation velocity amplitude of now drag conveyor, namely current drag conveyor speed preset value, last control cabinet is the drag conveyor speed preset value input intelligent speed-regulating frequency converter obtained, controlled the rotating speed of head motor and tail motor by intelligent speed-regulating frequency converter, thus speed governing is carried out to drag conveyor;
Wherein utilize coal-winning machine positioner, determine that coal-winning machine relative to the position of drag conveyor and the concrete steps of direction of advance information is:
(1) coal-winning machine positioner comprises the RF transmitter be arranged on coal-winning machine backplate, and at least two infrared receivers be arranged on hydraulic support column;
(2) when coal-winning machine is walked on drag conveyor, infrared receiver is by the location point information coordinating continuous acquisition coal-winning machine place with RF transmitter, and give control cabinet information transmission, control cabinet is according to the information received, thus determine that coal-winning machine is heading walking or the walking of tail direction, and determine the particular location of coal-winning machine on drag conveyor;
Wherein analysis meter calculates the concrete steps of the optimized operation velocity amplitude of now drag conveyor and is: optimized operation velocity amplitude calculates according to following rate curve function:
0.0008x
2+0.004x+0.4 (-25＜x≤25)
0.0005x
2-0.0075x+0.675 (25＜x≤100)
0001x+1.15 (100＜x≤150)
-0.004x+1.9 (150＜x≤175)
∫(x)＝-0.005x+2.075 (175＜x≤185)；
0.0021x
2-0.83x+83.7 (185＜x≤-185)
-0.005x+2.075 (-185＜x≤-175)
0.000008x
2+0.0002x-0.4 (-175＜x≤-50)
-0.00024x
2+0.0047x+1.62 (-50＜x≤-25)
Wherein ∫ (x) rotating speed that is drag conveyor, unit is meter per second, and x is the distance of coal-winning machine and handpiece of scraper conveyer, and unit is rice.
After adopting induction system of the present invention and control method, conveyor can be sent successively by control cabinet, crushing engine, elevating conveyor, drag conveyor enabling signal, be arranged on the elevating conveyor interval coal amount information that coal amount detecting device on elevating conveyor and drive division monitoring device can collect thereupon, scrapper conveyor and elevating conveyor drive division moment information, the integrative feedback such as the relative operating position information of coal-winning machine on scrapper conveyor are to the control cabinet of work plane induction system, after integrated treatment, elevating conveyor is made respectively according to these feedback informations, the automatic adjustment of the scrapper conveyor speed of service, prevent pressure to slip, and the equipment attrition reduced under the low condition of loading of equipment and power attenuation, improve coal mining efficiency, it is made to adapt to the requirement of work plane coal work.
Detailed description of the invention
The invention provides a kind of underground coal mine working face equipment against reaction type induction system, comprise coal-winning machine, drag conveyor, elevating conveyor, crushing engine and conveyor, also comprise control cabinet, this control cabinet respectively with described conveyor, crushing engine, elevating conveyor is connected with drag conveyor, also comprise the coal amount detecting device be arranged on elevating conveyor, this coal amount detecting device is connected with control cabinet thus can provides the fortune coal amount information of elevating conveyor, also comprise coal-winning machine positioner, this coal-winning machine positioner is connected with control cabinet thus the position that coal-winning machine can be provided relative to drag conveyor and direction of advance information.
Wherein also comprise drive division monitoring device, this drive division monitoring device is connected with the drive division of described elevating conveyor, the drive division of drag conveyor respectively thus obtains its moment information, and this drive division monitoring device is also connected with control cabinet.Wherein control cabinet is connected respectively by the drive division of frequency converter with elevating conveyor and drag conveyor, thus can adjust the chain speed of drag conveyor and elevating conveyor.Wherein control cabinet adopts programmable controller PLC or programmable operations terminal.Wherein coal-winning machine positioner comprises the RF transmitter be arranged on coal-winning machine backplate, and at least two infrared receivers be arranged on hydraulic support column, wherein all infrared receivers are all connected with wired or wireless transmitting device, this wired or wireless transmitting device is connected with control cabinet, thus obtains coal-winning machine relative to the position of drag conveyor and direction of advance information.
Present invention also offers a kind of underground coal mine working face equipment against the control method of reaction type induction system, comprise the steps:
(1) first before coal-winning machine start, first its positional information is fed back to control cabinet by coal-winning machine, and after start, coal-winning machine uploads its operating position information to control cabinet in real time;
(2) coal amount detecting device is by the coal amount on the instantaneous elevating conveyor of scanning, and each instantaneous coal amount informix is become the fortune coal amount information of the elevating conveyor in interval sometime, by this information feed back to control cabinet;
(3) after the fortune coal amount information of all coal-winning machine operating positions information collected, elevating conveyor processes by control cabinet, frequency converter as required to elevating conveyor drive division, drag conveyor drive division sends the instruction adjusting drag conveyor, elevating conveyor chain speed, and makes the rotating speed phase coadaptation between scrapper conveyor with elevating conveyor.
Also will pass through drive division monitoring device after step (2), the consumption moment information in the device start of collection drag conveyor and elevating conveyor and uptime interval, Real-time Feedback is to control cabinet; In step (3), control cabinet also will process the above-mentioned consumption moment information collected.Specifically control cabinet reads head drive division frequency converter (head frequency converter) Driving Torque in real time; and accurately the torque exported is controlled; send the information such as torque and rotating speed in head drive division frequency converter to tail-driving portion; the torque that tail-driving portion transmits according to head drive division in real time and the information such as rotating speed; real-time regulation output torque; reach the object of head, tail drive division power-balance, realize the protection to drive division.
Further, wherein transport coal amount information gathering and process, comprise the steps:
(1), scraper blade elevating conveyor is opened;
(2), open drag conveyor, frequency converter control system starts to start, and accelerates gradually, realize heavily loaded soft start from 0Hz; Then drag conveyor runs under being stabilized in the frequency of setting, runs self-check program.
(3), by coal amount detecting device detect the coal amount on scraper blade elevating conveyor, obtain coal amount data;
(4), by the coal amount data feedback obtained calculate current fortune coal amount to drag conveyor control cabinet, then compare with default value and export control instruction accordingly;
(5), control instruction is transferred to drag conveyor frequency converter, thus controls the speed of service of drag conveyor.
Step (3), (4) and (5) specifically comprise the steps: first by the scanning laser sensor installed on scraper blade elevating conveyor, coal seam profiled outline on scanning elevating conveyor, detect the coal seam thickness signal on scraper blade elevating conveyor, by this signal feedback to drag conveyor control cabinet, passing ratio integration or calculus calculate fortune coal amount and compare with the fortune coal amount preset, according to comparative result, drag conveyor control cabinet output order controls drag conveyor frequency converter, frequency converter sends signal controlling machine motor end to end, thus control the chain speed of drag conveyor.
Compare with default value in step (4) and export control instruction accordingly and specifically refer to: when the scraper blade elevating conveyor detected transports (> 80%) when coal amount is greater than 80% of specified freight volume, drag conveyor runs according to specified chain speed; When the scraper blade elevating conveyor fortune coal amount detected is the 60%-80% of specified freight volume (≤80% and > 60%), drag conveyor chain speed is 80% specified chain speed; When the scraper blade elevating conveyor fortune coal amount detected is the 40%-60% of specified freight volume (≤60% and > 40%), drag conveyor chain speed is 60% specified chain speed; When the scraper blade elevating conveyor fortune coal amount detected is the 30%-40% of specified freight volume (≤40% and >=30%), drag conveyor chain speed is 40% specified chain speed; When the scraper blade elevating conveyor fortune coal amount detected is less than 30% of specified freight volume (< 30%), drag conveyor chain speed is 30% specified chain speed.Through probationary certificate, are now almost in energy-saving effect and equipment life best state simultaneously, substantially can not affect fortune coal efficiency simultaneously.
The control cabinet of above-mentioned drag conveyor adopts programmable logic controller (PLC) or programmable operations terminal.
Further, wherein coal winning machine position information gathering and process, comprise the steps:
A kind of drag conveyor being applicable to coal-face, comprise head motor and tail motor, and the intelligent speed-regulating frequency converter be connected with this head motor and tail motor respectively, also comprise control cabinet, this control cabinet is connected with coal-winning machine positioner by wired or wireless mode, thus obtain coal-winning machine relative to the position of drag conveyor and direction of advance information, this control cabinet is also connected with described intelligent speed-regulating frequency converter, thus carries out speed governing according to the information collected to drag conveyor.
Wherein coal-winning machine positioner comprises the RF transmitter be arranged on coal-winning machine backplate, and at least two are arranged on the supermedial infrared receiver of hydraulic support column, such as, on each hydraulic support column that coal-winning machine running route is other, an infrared receiver can be installed.All infrared receivers are all connected with radio transmitting device, and this radio transmitting device is wirelessly connected with the wireless communication unit of control cabinet.
First coal-winning machine positioner is utilized, determine that coal-winning machine is relative to the position of drag conveyor and direction of advance information, then by wired or wireless mode by this information transmission to control cabinet, thus analysis meter calculates the optimized operation velocity amplitude of now drag conveyor, namely current drag conveyor speed preset value, last control cabinet, the drag conveyor speed preset value input intelligent speed-regulating frequency converter obtained, controls the rotating speed of head motor and tail motor by intelligent speed-regulating frequency converter.
Wherein utilize coal-winning machine positioner, determine that coal-winning machine relative to the position of drag conveyor and the concrete steps of direction of advance information is:
(1) coal-winning machine positioner comprises the RF transmitter be arranged on coal-winning machine backplate, and at least two are arranged on the supermedial infrared receiver of hydraulic support column;
(2) when coal-winning machine is walked on drag conveyor, infrared receiver is by the location point information coordinating continuous acquisition coal-winning machine place with RF transmitter 1, and give control cabinet information transmission, control cabinet is according to the information received, thus determine that coal-winning machine is heading walking or the walking of tail direction, and determine coal-winning machine particular location on a conveyor.
Wherein analysis meter calculates the concrete steps of the optimized operation velocity amplitude of now drag conveyor and is: optimized operation velocity amplitude calculates according to following rate curve function:
0.0008x
2+0.004x+0.4 (-25＜x≤25)
0.0005x
2-0.0075x+0.675 (25＜x≤100)
0001x+1.15 (100＜x≤150)
-0.004x+1.9 (150＜x≤175)
∫(x)＝-0.005x+2.075 (175＜x≤185)；
0.0021x
2-0.83x+83.7 (185＜x≤-185)
-0.005x+2.075 (-185＜x≤-175)
0.000008x
2+0.0002x-0.4 (-175＜x≤-50)
-0.00024x
2+0.0047x+1.62 (-50＜x≤-25)
Wherein ∫ (x) rotating speed that is drag conveyor, unit is meter per second, and x is the distance of coal-winning machine apart from handpiece of scraper conveyer, and unit is rice, through probationary certificate now conveyer scrape coal usefulness and reach optimum.
Drag conveyor speed regulating control principle of the present invention is as follows:
In coal mining process, the coal mining speed of coal-winning machine is relatively fixing, mining, it is deep and firm fixed to cut, the quantity that coal is trickled down on conveyor chain scraper plate is certain, in this case coal-winning machine direct of travel is different, coal speed scraped by drag conveyor should arrange difference, coal-winning machine position is on a conveyor different, the scraping coal speed and also should difference be set of drag conveyor, when coal-winning machine carries out commutation coal cutting or cutting Triangle Coal operation at head, tail place, drag conveyor should be made to remain on low velocity and to run.Coal intelligent speed-regulating frequency converter is different according to control cabinet set-point, by change of frequency and then control conveyer head, tail motor operating speed, and when can change according to load, controls to keep Driving Torque constant when motor output speed is different.
When coal-winning machine to be advanced from first conveyer head to tail direction operation, and then advance from tail to heading work cycle time, drag conveyor theoretical velocity operation curve as required runs.
By to down-hole coal excavation work plane conveyer SGZ1250/2 × 1000, coal-winning machine model MG900/2310-WD, pass middle frame ZY13000/26/5/57D, coal-face length 200 meters is research object, through quantitatively calculating, when coal-winning machine at the uniform velocity advances, mining, it is necessarily dark to cut, time support is at the uniform velocity passed, coal-winning machine direct of travel is with when drag conveyor position is different, the speed that conveyer needs when the coal amount that guarantee is unloaded on elevating conveyor is substantially certain is different, and concrete rate curve function is as follows:
0.0008x
2+0.004x+0.4 (-25＜x≤25)
0.0005x
2-0.0075x+0.675 (25＜x≤100)
0001x+1.15 (100＜x≤150)
-0.004x+1.9 (150＜x≤175)
∫(x)＝-0.005x+2.075 (175＜x≤185)
0.0021x
2-0.83x+83.7 (185＜x≤-185)
-0.005x+2.075 (-185＜x≤-175)
0.000008x
2+0.0002x-0.4 (-175＜x≤-50)
-0.00024x
2+0.0047x+1.62(-50＜x≤-25)
Note; ∫ (x) is scrapper conveyor rotating speed, and unit is meter per second, and x is coal-winning machine distance handpiece of scraper conveyer distance, and unit is rice.
Utilize multiple far infrared transceiver, measure the multiple position of coal-winning machine on drag conveyor and direction of advance, according to above-mentioned theory speed operation curve theoretical curve, coal-winning machine speed of service curve preset by control cabinet, and default speed of service curve through digital-to-analogue Transformation Program and proportional integral link, provide the speed command that Based Intelligent Control frequency converter is different continuously, intelligent frequency convertor is by the adjustment of frequency, conversion conveyer head, the speed of tail motor, motor is run according to theoretical curve velocity amplitude in real time, direction of advance is different on a conveyor to realize coal-winning machine, time coal mining position is different, conveyer runs at optimal velocity all the time, make conveyer scrape coal usefulness and reach optimum.
Claims (9)
1. a underground coal mine working face equipment is against reaction type induction system, comprise coal-winning machine, drag conveyor, elevating conveyor, crushing engine and conveyor, it is characterized in that: also comprise control cabinet, this control cabinet respectively with described conveyor, crushing engine, elevating conveyor is connected with drag conveyor, also comprise the coal amount detecting device be arranged on elevating conveyor, this coal amount detecting device is connected with control cabinet thus can provides the fortune coal amount information of elevating conveyor, also comprise coal-winning machine positioner, this coal-winning machine positioner is connected with control cabinet thus the position that coal-winning machine can be provided relative to drag conveyor and direction of advance information.
2. underground coal mine working face equipment as claimed in claim 1 is against reaction type induction system, it is characterized in that: wherein also comprise drive division monitoring device, this drive division monitoring device is connected with the drive division of described elevating conveyor, the drive division of drag conveyor respectively thus obtains its moment information, and this drive division monitoring device is also connected with control cabinet.
3. underground coal mine working face equipment as claimed in claim 1 is against reaction type induction system, it is characterized in that: wherein control cabinet is connected respectively by the drive division of frequency converter with elevating conveyor and drag conveyor, thus can adjust the chain speed of drag conveyor and elevating conveyor.
4. underground coal mine working face equipment as claimed in claim 1 is against reaction type induction system, it is characterized in that: wherein control cabinet adopts programmable controller PLC or programmable operations terminal.
5. if the underground coal mine working face equipment in Claims 1-4 as described in any one is against reaction type induction system, it is characterized in that: wherein coal-winning machine positioner comprises the RF transmitter be arranged on coal-winning machine backplate, and at least two infrared receivers be arranged on hydraulic support column, wherein all infrared receivers are all connected with wired or wireless transmitting device, this wired or wireless transmitting device is connected with control cabinet, thus obtains coal-winning machine relative to the position of drag conveyor and direction of advance information.
6. underground coal mine working face equipment is against a control method for reaction type induction system, it is characterized in that, comprises the steps:
(1) first before coal-winning machine start, first its positional information is fed back to control cabinet by coal-winning machine, and after start, coal-winning machine uploads its operating position information to control cabinet in real time;
(2) coal amount detecting device is by the coal amount on the instantaneous elevating conveyor of scanning, and each instantaneous coal amount informix is become the fortune coal amount information of the elevating conveyor in interval sometime, by this information feed back to control cabinet;
(3) after the fortune coal amount information of all coal-winning machine operating positions information collected, elevating conveyor processes by control cabinet, frequency converter as required to elevating conveyor drive division, drag conveyor drive division sends the instruction adjusting drag conveyor, elevating conveyor chain speed, and makes the rotating speed phase coadaptation between scrapper conveyor with elevating conveyor.
7. underground coal mine working face equipment as claimed in claim 6 is against the control method of reaction type induction system, it is characterized in that: after step (2), also will pass through drive division monitoring device, gather the consumption moment information in the device start of drag conveyor and elevating conveyor and uptime interval, Real-time Feedback is to control cabinet; In step (3), control cabinet also will process the above-mentioned consumption moment information collected.
8. underground coal mine working face equipment as claimed in claim 6 is against the control method of reaction type induction system, it is characterized in that: wherein specifically comprise the steps: with process the fortune coal amount information of elevating conveyor
(1), elevating conveyor is opened;
(2), open drag conveyor, the control system of frequency converter starts to start, and makes drag conveyor stable operation;
(3), by coal amount detecting device detect the coal amount on elevating conveyor, obtain coal amount data;
(4), by the coal amount data feedback obtained calculate current fortune coal amount to the control cabinet of drag conveyor, then compare with default value and export control instruction accordingly;
(5), by control instruction be transferred to drag conveyor frequency converter, thus control the speed of service of drag conveyor;
Step (3), (4) and (5) specifically comprise the steps: first by the scanning laser sensor installed on elevating conveyor, coal seam profiled outline on scanning elevating conveyor, detect the coal seam thickness signal on elevating conveyor, by this signal feedback to the control cabinet of drag conveyor, passing ratio integration or calculus calculate current fortune coal amount and compare with the fortune coal amount preset, according to comparative result, the control cabinet output order of drag conveyor controls drag conveyor frequency converter, frequency converter sends the head motor that signal controls drag conveyor, tail motor, thus control the chain speed of drag conveyor,
Compare with default value in step (4) and export control instruction accordingly and specifically refer to: transport that coal amount is greater than specified freight volume when the elevating conveyor detected 80%, drag conveyor runs according to specified chain speed; When the elevating conveyor fortune coal amount detected is the 60%-80% of specified freight volume, drag conveyor chain speed is set to 80% specified chain speed; When the elevating conveyor fortune coal amount detected is the 40%-60% of specified freight volume, drag conveyor chain speed is set to 60% specified chain speed; When the elevating conveyor fortune coal amount detected is the 30%-40% of specified freight volume, drag conveyor chain speed is set to 40% specified chain speed; When the elevating conveyor fortune coal amount detected is less than 30% of specified freight volume, drag conveyor chain speed is set to 30% specified chain speed.
9. underground coal mine working face equipment as claimed in claim 6 is against the control method of reaction type induction system, it is characterized in that: wherein specifically comprise the steps: coal-winning machine operating position information and process
First coal-winning machine positioner is utilized, determine that coal-winning machine is relative to the position of drag conveyor and direction of advance information, then by wired or wireless mode by this information transmission to control cabinet, thus analysis meter calculates the optimized operation velocity amplitude of now drag conveyor, namely current drag conveyor speed preset value, last control cabinet is the drag conveyor speed preset value input intelligent speed-regulating frequency converter obtained, controlled the rotating speed of head motor and tail motor by intelligent speed-regulating frequency converter, thus speed governing is carried out to drag conveyor;
Wherein utilize coal-winning machine positioner, determine that coal-winning machine relative to the position of drag conveyor and the concrete steps of direction of advance information is:
(1) coal-winning machine positioner comprises the RF transmitter be arranged on coal-winning machine backplate, and at least two infrared receivers be arranged on hydraulic support column;
(2) when coal-winning machine is walked on drag conveyor, infrared receiver is by the location point information coordinating continuous acquisition coal-winning machine place with RF transmitter, and give control cabinet information transmission, control cabinet is according to the information received, thus determine that coal-winning machine is heading walking or the walking of tail direction, and determine the particular location of coal-winning machine on drag conveyor;
Wherein analysis meter calculates the concrete steps of the optimized operation velocity amplitude of now drag conveyor and is: optimized operation velocity amplitude calculates according to following rate curve function:
Wherein ∫ (x) rotating speed that is drag conveyor, unit is meter per second, and x is the distance of coal-winning machine and handpiece of scraper conveyer, and unit is rice.
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| CN114194750A (en) * | 2021-12-29 | 2022-03-18 | 国家能源集团宁夏煤业有限责任公司枣泉煤矿 | Intelligent speed regulation method and system for full coal flow transportation of intelligent working face |
| CN114198643A (en) * | 2021-12-10 | 2022-03-18 | 上海交通大学 | Water path control system and control method of multi-metal nodule ore collection test device |
| CN114194851A (en) * | 2021-11-12 | 2022-03-18 | 中国煤炭科工集团太原研究院有限公司 | Coal mine underground automatic loading and unloading coal linkage control method and equipment |
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| CN111994594A (en) * | 2020-08-25 | 2020-11-27 | 精英数智科技股份有限公司 | Method and system for adjusting running speed of coal flow transportation system and electronic equipment |
| CN114194851A (en) * | 2021-11-12 | 2022-03-18 | 中国煤炭科工集团太原研究院有限公司 | Coal mine underground automatic loading and unloading coal linkage control method and equipment |
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