CN109761015B - Main transportation equipment automatic control method based on mine production coal quantity - Google Patents
Main transportation equipment automatic control method based on mine production coal quantity Download PDFInfo
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- CN109761015B CN109761015B CN201811500076.5A CN201811500076A CN109761015B CN 109761015 B CN109761015 B CN 109761015B CN 201811500076 A CN201811500076 A CN 201811500076A CN 109761015 B CN109761015 B CN 109761015B
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Abstract
The invention provides a main transportation equipment automatic control method based on mine production coal quantity, which is suitable for a system of a coal mine taking a belt conveyor as main transportation equipment. The core content of the invention is that the total transport capacity of the belt conveyor of the full transport line is used as input to control the start, stop and speed regulation of each belt conveyor in real time according to the transport capacity information of the belt conveyor, the lapping relation of the belt conveyor and the equipment running condition.
Description
Technical Field
The invention relates to a control system of a main belt conveyor for coal mine, a material flow detection device of the belt conveyor for mine, in particular to an automatic control method of main conveying equipment based on the coal production amount of a mine.
Background
At present, a belt conveyor is high in coal conveying efficiency, is a main device of a coal mine main conveying system, and along with the fact that the automation degree of coal mine production is higher and higher, users have higher and higher requirements on the process and the intelligent degree of an on-site coal flow control system.
The mining belt conveyor transportation monitoring system in the market at present can simply start and stop the belt conveyor, but cannot automatically start, stop and regulate the speed of each belt conveyor along the whole transportation line on site, because the system lacks data of the whole transportation quantity and data of material loads of each belt conveyor, the basis of scheduling start, stop and speed regulation of the whole system is lacked. When the belt conveyor is used on site, coal piling or long-time idling is easily caused when the belt conveyor is started or stopped, and the normal production of mines is influenced. For example, although frequency converters have been installed in many sites, speed regulation cannot be performed because the throughput of the entire mine and the load overall data of the belt conveyor are unclear, and the frequency converters are used only as soft starts. The belt conveyor runs at high speed in the running process under the states of no load, light load and heavy load, and unnecessary abrasion and power consumption are generated on the devices such as a motor, a speed reducer, a roller, a carrier roller, an adhesive tape and the like during no load and light load, so that the service life of the devices is shortened.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to solve one of the problems, the automatic control method of the main transportation equipment based on the coal production quantity of the mine is provided.
The technical scheme adopted by the invention for solving the problems is as follows:
a main transportation equipment automatic control method based on mine production coal quantity is characterized in that: for belt conveyor D1, which constitutes the main transport system for the coal mine, its activation is determined by the material position X0 on the upstream belt conveyor D0, which is overlapped with it, and when the material is transported to X0, D1 is activated; the stop is determined by the total amount of the upstream belt conveyor material transported W overlapped with the upstream belt conveyor material transported W1 and when W = W1=0, D1 stops; the transportation speed is determined by the yield and the total transportation amount on the current transportation line, if the current yield is Wc1, the total upstream transportation amount of D1 is Wc2, the maximum transportation amount of D1 is Wt (transportation amount per hour), and the transportation amount per second is Wst, the transportation speed of D1 is (Wc1+ Wc2)/Wst, and the constraint condition is that Wst 3600 is not more than Wt.
A main transportation equipment automatic control method based on mine production coal quantity specifically comprises the following steps:
1) calculating to obtain production to-be-transported data;
2) calculating the material transportation position and the total material transportation amount of each belt conveyor by using the load distribution sensor of the mining intrinsic safety type belt conveyor of each belt conveyor;
3) judging the starting control of the downstream lapping belt conveyor according to the material position of the last belt conveyor for material transportation;
4) stopping the belt conveyor when the total upstream conveying amount (the total amount of materials to be conveyed and the total upstream conveying amount of all belt conveyors) and the total upstream conveying amount of the belt conveyor are both 0;
5) and determining the conveying speed of the belt conveyor according to the upstream total conveying capacity and the upstream total conveying amount of all the belt conveyors under the constraint condition of meeting the maximum conveying capacity of the belt conveyor.
An automatic control system of coal mine main transportation equipment based on coal yield comprises a belt conveyor D0, a belt conveyor D1, mining intrinsically safe belt conveyor load distribution sensors, a belt conveyor monitoring control device and a ring network switch, wherein the belt conveyor D0 and the belt conveyor D1 are respectively connected with the mining intrinsically safe belt conveyor load distribution sensors, each mining intrinsically safe belt conveyor load distribution sensor is connected with the belt conveyor monitoring control device, a plurality of belt conveyor monitoring control devices are connected with the ring network switch, the mining intrinsically safe belt conveyor load distribution sensors are used for detecting the conveying materials and material distribution of the belt conveyors, the detected data are sent to the belt conveyor monitoring control device through a 485 bus, the belt conveyor monitoring control device obtains the load distribution data of an upstream belt conveyor D0 through a network, and the start-up of the belt conveyor D0 is decided according to control logic, Stopping and regulating the speed.
The load distribution sensor of the mining intrinsically safe adhesive tape machine is mining intrinsically safe equipment, can measure the load capacity of the current adhesive tape machine, and can qualitatively reflect the load distribution condition of the current adhesive tape machine.
The load distribution sensor of the mining intrinsically safe adhesive tape machine comprises a distance measuring unit 1, a displacement detecting unit 2, a video detecting unit 3 and a three-part sensing probe and a signal processing unit 4, wherein the distance measuring unit 1, the displacement detecting unit 2 and the video detecting unit 3 are all electrically connected with the signal processing unit 4, the distance measuring unit 1 detects the height of a current material in a distance measuring mode, the width of the current material on the adhesive tape machine is detected in a video mode through the video detecting unit 3, the redundancy of the distance measuring unit 1 and the video detecting unit obtains the approximate cross section of the current material, and the cross section of the material is approximate to a triangle. The cross section of the triangle is approximately calculated through calculation, so that the instantaneous transportation flow of the current material is determined qualitatively. The distance traveled by the belt conveyor is detected through the displacement detection unit 2, and the coal quantity on the whole belt conveyor can be obtained by integrating the flow (approximate section) in the distance of the length of the belt conveyor; through the internal memory function, the material distribution condition on the whole adhesive tape machine can be described.
The distance measuring unit 1 is a distance measuring probe, the displacement detecting unit 2 is a displacement probe, and the video detecting unit 3 is a video probe.
The KJ161 type coal mine belt transportation monitoring system can be used for carrying out centralized monitoring and control on a transportation system consisting of one or more belt conveyors and related equipment thereof. The system has multiple optional schemes, and meets the control requirements of various rubber belt conveyors. The system integrates the functions of protecting, controlling, voice communicating, video monitoring and the like of the belt conveyor, realizes the automatic control of the coal flow transportation system, and improves the automatic production level of the coal mine.
The working principle of the invention is as follows: the mining belt conveyor material flow detection device is equipped, the total transport capacity of the whole belt conveyor can be given, the current yield (total amount of materials to be transported) and the load total amount of each belt conveyor can be given, and in the occasion of overlapping multiple belt conveyors, a control algorithm based on the total amount to be transported is given, so that the mining belt conveyor material flow detection device is safer, more accurate and more efficient than the prior coal-following flow control strategy, and on the basis, unmanned operation management of the belt conveyor can be realized, potential safety hazards are reduced to the maximum extent, and the conveying line efficiency is improved.
The material flow detection device is arranged at a discharge point at the tail of the belt conveyor, the device obtains material flow information of the point through distance measurement of the ultrasonic probe, and then the material transport capacity and the whole transport capacity of each position of the belt conveyor are calculated according to the transport speed of the belt conveyor.
The material flow data of the measuring point position of the single belt conveyor can be provided; the material information of the measuring point is measured by an ultrasonic probe; the calculation of the running position of the measuring point data at any moment and the calculation of the total conveying amount of the whole belt conveyor can be realized according to the movement speed of the belt conveyor.
At the beginning of the start of the belt conveyor D1, the distance from the material flow on the belt conveyor D0 which is started upstream of the belt conveyor D1 to the discharge point of D0 must be 2 times Ls, where Ls is the distance required for the belt conveyor to stop from the full load maximum speed
The invention has the beneficial effects that:
(1) the invention can provide the control of starting, stopping and speed regulation of each belt conveyor under the unattended condition of the coal mine to the belt conveyors forming the main coal conveying streamline.
(2) The coal mine production equipment can realize energy conservation and consumption reduction through automatic starting, stopping and speed regulation of the equipment, improve the production efficiency and reduce the enterprise cost.
Drawings
FIG. 1 is a flow chart of the automatic control method of the present invention;
FIG. 2 is a block diagram of the automatic control system of the present invention;
fig. 3 is a structural diagram of a load distribution sensor of the mining intrinsically safe adhesive tape machine.
In the figure: 1. the device comprises a distance measuring unit 2, a displacement detecting unit 3, a video detecting unit 4, a signal processing unit 5 and a belt conveyor.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
the present invention is further illustrated by the following specific examples, which are not intended to limit the scope of the invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Example one
As shown in fig. 1-3, the automatic control method of the main transportation equipment based on the coal amount produced by the mine is characterized in that: for belt conveyor D1, which constitutes the main transport system for the coal mine, its activation is determined by the material position X0 on the upstream belt conveyor D0, which is overlapped with it, and when the material is transported to X0, D1 is activated; the stop is determined by the total amount of the upstream belt conveyor material transported W overlapped with the upstream belt conveyor material transported W1 and when W = W1=0, D1 stops; the transportation speed is determined by the yield and the total transportation amount on the current transportation line, if the current yield is Wc1, the total upstream transportation amount of D1 is Wc2, the maximum transportation amount of D1 is Wt (transportation amount per hour), and the transportation amount per second is Wst, the transportation speed of D1 is (Wc1+ Wc2)/Wst, and the constraint condition is that Wst 3600 is not more than Wt.
A main transportation equipment automatic control method based on mine production coal quantity specifically comprises the following steps:
1) calculating to obtain production to-be-transported data;
2) calculating the material transportation position and the total material transportation amount of each belt conveyor by using the load distribution sensor of the mining intrinsic safety type belt conveyor of each belt conveyor;
3) judging the starting control of the downstream lapping belt conveyor according to the material position of the last belt conveyor for material transportation;
4) stopping the belt conveyor when the total upstream conveying amount (the total amount of materials to be conveyed and the total upstream conveying amount of all belt conveyors) and the total upstream conveying amount of the belt conveyor are both 0;
5) and determining the conveying speed of the belt conveyor according to the upstream total conveying capacity and the upstream total conveying amount of all the belt conveyors under the constraint condition of meeting the maximum conveying capacity of the belt conveyor.
An automatic control system of coal mine main transportation equipment based on coal yield comprises a belt conveyor D0, a belt conveyor D1, mining intrinsically safe belt conveyor load distribution sensors, a belt conveyor monitoring control device and a ring network switch, wherein the belt conveyor D0 and the belt conveyor D1 are respectively connected with the mining intrinsically safe belt conveyor load distribution sensors, each mining intrinsically safe belt conveyor load distribution sensor is connected with the belt conveyor monitoring control device, a plurality of belt conveyor monitoring control devices are connected with the ring network switch, the mining intrinsically safe belt conveyor load distribution sensors are used for detecting the conveying materials and material distribution of the belt conveyors, the detected data are sent to the belt conveyor monitoring control device through a 485 bus, the belt conveyor monitoring control device obtains the load distribution data of an upstream belt conveyor D0 through a network, and the start-up of the belt conveyor D0 is decided according to control logic, Stopping and regulating the speed.
The load distribution sensor of the mining intrinsically safe adhesive tape machine is mining intrinsically safe equipment, can measure the load capacity of the current adhesive tape machine, and can qualitatively reflect the load distribution condition of the current adhesive tape machine.
The load distribution sensor of the mining intrinsically safe adhesive tape machine comprises a distance measuring unit 1, a displacement detecting unit 2, a video detecting unit 3 and a three-part sensing probe and a signal processing unit 4, wherein the distance measuring unit 1, the displacement detecting unit 2 and the video detecting unit 3 are all electrically connected with the signal processing unit 4, the distance measuring unit 1 detects the height of a current material in a distance measuring mode, the width of the current material on the adhesive tape machine is detected in a video mode through the video detecting unit 3, the redundancy of the distance measuring unit 1 and the video detecting unit obtains the approximate cross section of the current material, and the cross section of the material is approximate to a triangle. The cross section of the triangle is approximately calculated through calculation, so that the instantaneous transportation flow of the current material is determined qualitatively. The distance traveled by the belt conveyor is detected through the displacement detection unit 2, and the coal quantity on the whole belt conveyor can be obtained by integrating the flow (approximate section) in the distance of the length of the belt conveyor; through the internal memory function, the material distribution condition on the whole adhesive tape machine can be described.
The distance measuring unit 1 is a distance measuring probe, the displacement detecting unit 2 is a displacement probe, and the video detecting unit 3 is a video probe.
The KJ161 type coal mine belt transportation monitoring system can be used for carrying out centralized monitoring and control on a transportation system consisting of one or more belt conveyors and related equipment thereof. The system has multiple optional schemes, and meets the control requirements of various rubber belt conveyors. The system integrates the functions of protecting, controlling, voice communicating, video monitoring and the like of the belt conveyor, realizes the automatic control of the coal flow transportation system, and improves the automatic production level of the coal mine.
The specific working flow of the embodiment is as follows:
firstly, detecting and calculating the position of the loaded material and the total transportation amount information of the belt conveyor
The load distribution sensor of the mining intrinsic safety type adhesive tape machine is used as a material flow detection device and is arranged near a material receiving point of a belt conveyor. The ultrasonic probe is used for measuring the material height of a single point on the adhesive tape machine; and the signal processing unit processes the signals collected by the probe and combines the data of the speed sensor of the belt conveyor to obtain the material data of any point on the adhesive tape and the total material load data.
1) Measuring installation point materials
The material flow detection device memorizes a distance measurement initial value when the belt is empty through ultrasonic distance measurement, and the difference value of the height of the transported materials and the distance measurement initial value is material load data of a measurement point.
2) Material measuring method for any point of conveying belt of belt conveyor
And according to the running speed V of the conveyor belt of the belt conveyor at the measuring point, the distance L between any point X on the conveyor belt of the belt conveyor and the measuring point is delayed by L/V, and the distance L is the material flow data of the measuring point.
3) Gross haulage data
Assuming that the whole length of the conveying belt is A and the conveying speed is v, one acquisition period is A/x, an array D [ N ] is established, single-point material flow data acquired each time are stored in the D [ N ], and the data in the D [ N ] are accumulated in one acquisition period to obtain whole load data.
② start control
Assuming that the currently controlled belt conveyor is D1, the upstream belt conveyor overlapped with the currently controlled belt conveyor is D0, the maximum conveying speed of the belt conveyor is V1, and the time required for stopping from the maximum conveying speed to 0 is S1, when the distance between D0 and the nose is 2 × V1 × S1, D1 can be started.
③ stop control
Assuming that the currently controlled belt conveyor is D1 and the upstream belt conveyor overlapped with the currently controlled belt conveyor is D0, D1 can be stopped when the total amount of upstream transportation is 0, D0 is stopped and the total amount of D1 transportation materials is 0.
Speed regulation control
Assuming that the currently controlled belt conveyor is D1, the upstream belt conveyor overlapped with the currently controlled belt conveyor is D0, Dx is any one of the downstream belt conveyors, the maximum transport amount per second of Dx is Wdx, the total upstream production to be transported is Wc1, the total upstream transport amount of D1 is Wc2, the transport amount per second of D0 is Wd0, the maximum transport amount per second is Wst, the maximum transport amount per second is Wd1max, and the maximum operation speed is Vmax.
When Wd0= Wst, D1 runs at maximum operating speed
When Wd0< Wst, the D1 operating speed V = Vmax ((Wc1+ Wc2)/Wd 1max), corresponding to a volume of traffic per second Wd1;
when Wd1> Wdx, Wd1= Wdx, at which time the operating speed V = Vmax ((Wc1+ Wc2)/Wd1) of D1 is adjusted.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A main transportation equipment automatic control method based on mine production coal quantity is characterized in that: for belt conveyor D1, which constitutes the main transport system for the coal mine, its activation is determined by the material position X0 on the upstream belt conveyor D0, which is overlapped with it, and when the material is transported to X0, D1 is activated; the stop is determined by the total amount of the upstream belt conveyor material transported W overlapped with the upstream belt conveyor material transported W1 and when W = W1=0, D1 stops; the transportation speed is determined by the yield and the total transportation amount on the current transportation line, if the current yield is Wc1, the total upstream transportation amount of D1 is Wc2, the maximum transportation amount of D1 is Wt, and the transportation amount per second is Wst, the transportation speed of D1 is (Wc1+ Wc2)/Wst, and the constraint condition is that Wst 3600 is not more than Wt.
2. A main transportation equipment automatic control method based on mine production coal quantity is characterized in that: the method specifically comprises the following steps:
1) calculating to obtain production to-be-transported data;
2) calculating the material transportation position and the total material transportation amount of each belt conveyor by using the load distribution sensor of the mining intrinsic safety type belt conveyor of each belt conveyor;
3) judging the starting control of the downstream lapping belt conveyor according to the material position of the last belt conveyor for material transportation;
4) stopping the belt conveyor when the total upstream conveying capacity and the total material conveying capacity of the belt conveyor are both 0;
5) and determining the conveying speed of the belt conveyor according to the upstream total conveying capacity and the upstream total conveying amount of all the belt conveyors under the constraint condition of meeting the maximum conveying capacity of the belt conveyor.
3. The utility model provides a coal mine owner transportation equipment automatic control system based on coal output which characterized in that: the mining intrinsic safety type belt conveyor load distribution sensor is connected with a belt conveyor monitoring control device and a ring network switch respectively, the belt conveyor D0 and the belt conveyor D1 are connected with the mining intrinsic safety type belt conveyor load distribution sensor respectively, each mining intrinsic safety type belt conveyor load distribution sensor is connected with the belt conveyor monitoring control device, a plurality of belt conveyor monitoring control devices are connected with the ring network switch respectively, the mining intrinsic safety type belt conveyor load distribution sensor is used for detecting material transportation and material distribution of a single belt conveyor, detected data are sent to the belt conveyor monitoring control device through a 485 bus, the belt conveyor monitoring control device obtains load distribution data of an upstream belt conveyor D0 through a network, and starting, stopping and speed regulation of the belt conveyor D1 are decided according to control logic.
4. The automatic control system for coal mine main transportation equipment based on coal yield according to claim 3, characterized in that: the load distribution sensor of the mining intrinsically safe adhesive tape machine is mining intrinsically safe equipment, can measure the load capacity of the current adhesive tape machine, and can qualitatively reflect the load distribution condition of the current adhesive tape machine.
5. The automatic control system for coal mine main transportation equipment based on coal yield according to claim 4, characterized in that: mining ann's type sticky tape machine load distribution sensor includes range unit (1), displacement detecting element (2), video detecting element (3) triplex sensing probe and signal processing unit (4), and range unit (1), displacement detecting element (2), video detecting element (3) all with signal processing unit (4) electric connection, range unit (1) detects the height of current material through the range finding mode, detects the width of current material on the sticky tape machine through video detecting element (3) video mode, and the redundancy of the two obtains the approximate cross-section of current material, and the material cross-section is approximate triangle-shaped, through calculating this approximate triangle-shaped's cross-section to the instantaneous transportation flow of qualitative current material.
6. The automatic control system for coal mine main transportation equipment based on coal yield according to claim 5, characterized in that: the distance measuring unit (1) is a distance measuring probe, the displacement detecting unit (2) is a displacement probe, and the video detecting unit (3) is a video probe.
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| CN111960079A (en) * | 2020-08-19 | 2020-11-20 | 龙口矿业集团有限公司 | Automatic belt starting method based on load video time three-level control |
| CN113562429B (en) * | 2021-08-11 | 2023-06-02 | 中煤科工集团上海有限公司 | Belt conveyor speed regulation control system and method based on load distribution |
| CN113859910B (en) * | 2021-09-18 | 2023-03-31 | 力博工业技术研究院(山东)有限公司 | Energy-saving method and device for controlling belt conveyor based on conveying capacity |
| CN114671213B (en) * | 2022-03-30 | 2023-07-04 | 西安交通大学 | Method, system, equipment and medium for controlling underground coal mine belt conveyor system |
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| JP3577814B2 (en) * | 1995-12-20 | 2004-10-20 | 株式会社明電舎 | Raw material transport equipment |
| CN102942039B (en) * | 2012-11-27 | 2014-10-22 | 山西三元煤业股份有限公司 | Belt conveyor control system and method capable of adjusting belt speeds automatically according to material flows or material levels |
| CN105217271B (en) * | 2015-08-31 | 2017-09-01 | 西安华光信息技术有限责任公司 | The self-adaptation control method of belt transportation system based on video identification |
| CN108069222A (en) * | 2016-11-16 | 2018-05-25 | 江苏鼎盛重工有限公司 | A kind of multi-stage, belt machine speed control system |
| CN107487583B (en) * | 2017-06-28 | 2019-11-01 | 中煤科工集团上海有限公司 | A kind of energy-saving control device and its method of Coal mine transportation system |
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