CN116620780A - Belt conveyor monitoring method and stock ground - Google Patents
Belt conveyor monitoring method and stock ground Download PDFInfo
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- CN116620780A CN116620780A CN202310524798.9A CN202310524798A CN116620780A CN 116620780 A CN116620780 A CN 116620780A CN 202310524798 A CN202310524798 A CN 202310524798A CN 116620780 A CN116620780 A CN 116620780A
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000012544 monitoring process Methods 0.000 title claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 103
- 238000012546 transfer Methods 0.000 claims description 28
- 238000004891 communication Methods 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000001186 cumulative effect Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000003245 coal Substances 0.000 abstract description 16
- 238000002156 mixing Methods 0.000 abstract description 10
- 238000001514 detection method Methods 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 7
- 230000002159 abnormal effect Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
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- 238000012806 monitoring device Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
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- 238000002604 ultrasonography Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/02—Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load carriers, e.g. for interrupting the drive in the event of overheating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The application relates to the technical field of belt conveyors, and discloses a belt conveyor monitoring method and a stock ground, wherein the monitoring method comprises the following steps: acquiring current operation data of a belt conveyor; outputting the material conveying flow of the belt conveyor based on the current operation data; comparing the current operation data with normal operation data; and outputting an alarm signal when the current operation data is not consistent with the normal operation data. So set up, can carry out real-time control to the material flow of belt feeder, simultaneously, current operation data that can real-time supervision belt feeder can export alarm signal when current operation data is unusual to can advance the early warning to the trouble that the belt feeder will appear, let the technician inspect the belt feeder in advance, and then guaranteed the normal work of belt feeder, so that can in time prescribe reasonable coal blending scheme.
Description
Technical Field
The application relates to the technical field of belt conveyors, in particular to a belt conveyor monitoring method and a material yard.
Background
At present, most of thermal power plants are developing coal blending operation, and the power generation cost is reduced on the premise of ensuring the combustion characteristics of the boiler. Or the core goal of blending coal and burning in a single field is that the coal burned by the boiler has the best economy on the basis of meeting the environmental protection emission requirement. To achieve the core goal, the accurate calculation of the coal blending scheme is required, the accurate feeding and the implementation of the coal blending are required, each link can influence the final result, and the value release of the fire coal is influenced.
Because the belt conveyor is generally required to convey coal in the coal blending process, the working condition of the belt conveyor is required to be controlled so as to be capable of timely specifying a reasonable coal blending scheme.
Disclosure of Invention
In view of the above, the application provides a belt conveyor monitoring method and a stock ground, which are used for solving the problem of controlling the working condition of the belt conveyor so as to be capable of timely designating a reasonable coal blending scheme.
In a first aspect, the present application provides a method for monitoring a belt conveyor, the method comprising:
acquiring current operation data of a belt conveyor; outputting the material conveying flow of the belt conveyor based on the current operation data; comparing the current operation data with the normal operation data; and outputting an alarm signal when the current operation data does not accord with the normal operation data.
The beneficial effects are that: so set up, can carry out real-time control to the material flow of belt feeder, simultaneously, current operation data that can real-time supervision belt feeder can export alarm signal when current operation data is unusual to can advance the early warning to the trouble that the belt feeder will appear, let the technician inspect the belt feeder in advance, and then guaranteed the normal work of belt feeder, so that can in time prescribe reasonable coal blending scheme.
In an alternative embodiment, a two-dimensional laser scanner is arranged on the belt conveyor, and the empty load section data of the belt on the belt conveyor when empty load and the material conveying section data of the belt when material conveying are obtained through the two-dimensional laser scanner; and obtaining the material conveying flow based on the no-load section data, the material conveying section data and the running speed of the belt.
The beneficial effects are that: by adopting a laser scanning technology and combining the running speed of the belt conveyor, the material conveying flow of the belt conveyor can be obtained in real time through an algorithm, and in addition, in combination with the running data of the belt conveyor when the belt conveyor is in no-load, a technician can perform data calculation on an on-site processing terminal, and the running data of the belt conveyor can be updated continuously, so that the technician can control the working state of the belt conveyor in real time. Meanwhile, the two-dimensional laser scanner is convenient to install, the two-dimensional laser scanner can dynamically collect the surface point cloud data of the belt conveyor and the belt conveyor in real time at a belt speed, the collected surface point cloud data of the belt conveyor can be subjected to burr correction, abnormal high-point data can be automatically removed, and therefore detection accuracy is improved. Further, the maintenance amount of the two-dimensional laser scanner is small, and the maintenance efficiency of technicians can be improved.
In an alternative embodiment, a speed measuring wheel and a linear speed meter are arranged on the belt conveyor, and the speed measuring wheel is contacted with a belt on the belt conveyor, so that the speed measuring wheel and the belt synchronously move; the speed measuring wheel is in communication connection with the linear speed meter; the running speed is measured by a tachometer wheel and a linear speed meter.
In an alternative embodiment, the feed flow includes instantaneous feed flow and cumulative feed flow.
In an alternative embodiment, an overrun warning is made when the monitored instantaneous flow exceeds 10% of the rated capacity.
In an alternative embodiment, an overrun warning is made when the monitored instantaneous flow exceeds 10% of the rated capacity and the duration exceeds a set duration.
The beneficial effects are that: the arrangement can prevent excessive conveying capacity of the belt conveyor in the actual operation process, so that downstream materials are accumulated, accumulated materials cannot be treated in time, and normal operation of a stock yard and the belt conveyor is ensured. Meanwhile, the excessive transportation amount of the belt conveyor can increase the abrasion degree of the belt conveyor, so that the transportation amount is controlled in a proper range, the maintenance times of the belt conveyor are reduced, and the service life of the belt conveyor can be prolonged.
In an alternative embodiment, the monitoring method further comprises: taking the normal position of the idle belt as a judging datum point, and measuring the offset distance of the belt by a two-dimensional laser scanner; when the offset distance exceeds the preset distance of the width of the belt, outputting an alarm signal of belt deviation; the offset distances include a left offset distance and a right offset distance.
The beneficial effects are that: through carrying out real-time supervision to the offset distance of belt, can in time output alarm signal when the belt off tracking to make things convenient for the technician to handle at the first time, prevent the unable normal work of belt off tracking.
In an alternative embodiment, the monitoring method further comprises: installing a two-dimensional laser scanner on the center line of the belt; measuring the material flow on two sides of the center line by taking the center line as a reference point through a two-dimensional laser scanner; calculating the unbalanced load rate according to the material flow on two sides of the central line; when the sum of the material flow rates at two sides of the middle line is larger than the preset flow rate and the unbalanced load rate is larger than the preset unbalanced load value, an unbalanced load alarm signal is output.
The beneficial effects are that: when the belt conveyor is in a light load state, the specific distribution of materials does not affect the belt conveyor, and meanwhile, when the belt conveyor is in a heavy load state and the distribution of the materials is balanced, the pressure of the materials on the belt conveyor is balanced, and the belt conveyor can work normally. Once the belt conveyor is in a heavy-load state, when the material distribution is unbalanced, the unbalanced load condition is very easy to occur, and the belt conveyor can be damaged to a certain extent under long-time operation. According to the application, through real-time monitoring of the materials on the two sides of the belt conveyor, when the belt conveyor is in an unbalanced load state, an alarm signal can be sent out in time, so that technicians can process the materials in time.
In a second aspect, the present application provides a stockyard comprising:
the transfer station is arranged in the site of the stock yard; the first belt conveyor is connected with a feed inlet of the transfer station, and the second belt conveyor is connected with a discharge outlet of the transfer station; the belt conveyor applies the monitoring method of any of the embodiments described above.
In an alternative embodiment, the discharge port of the transfer station is connected to the second belt conveyor via a transfer chute; the two-dimensional laser scanners are respectively arranged above the first belt conveyor and the second belt conveyor; respectively acquiring the material flow of the first belt conveyor and the material flow of the second belt conveyor through two-dimensional laser scanners; and when the difference between the material flow of the first belt conveyor and the material flow of the second belt conveyor exceeds a preset difference value within a preset time interval and continuously exceeds a first time, outputting an alarm signal for blocking the transfer launder.
The beneficial effects are that: through carrying out the control respectively to two belt conveyors, can carry out real-time control to the operating condition of stock ground transfer chute, can in time judge whether transfer chute is in the jam state. So that the technician can handle in time.
In an alternative embodiment, the stockyard further comprises:
the stacker-reclaimer is arranged in the field of the stock yard; the stacker-reclaimer is suitable for conveying materials to the first belt conveyor; and regulating the material piling and taking flow according to the relation between the instantaneous flow and the material piling and taking flow of the material piling and taking machine.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present application, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a method for monitoring a belt conveyor according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, or can be communicated inside the two components, or can be connected wirelessly or in a wired way. The specific meaning of the above terms in the present application can be understood in a specific case by a worker of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present application described below may be combined with each other as long as they do not collide with each other.
At present, the common belt coal flow detection methods mainly comprise two types of contact type and non-contact type: the contact type detection method comprises a belt scale, stress-strain weighing and the like; non-contact detection methods include ultrasound, image recognition, and the like. The real-time detection precision of the contact type detection method is low, the equipment price of the non-contact type detection method is high, and the high manual maintenance cost exists. In addition, the method can only realize single belt conveyor flow detection, and can not detect belt conveyor faults such as belt deviation, material unbalanced load and coal blockage at the same time.
Moreover, in the running process of the belt conveyor, because the belt is deviated, the material is deviated and the coal is blocked, the corresponding detection mode is also provided, and the image recognition method is commonly adopted at present to realize the pre-warning of the fault. The belt conveyor is characterized in that a large amount of smoke dust can be generated in the process of conveying materials, the accuracy of image identification is affected, the data volume of image transmission is large, the communication delay is long, the pre-warning of faults is carried out after the data processing, the instantaneity is also greatly reduced, and therefore the actual application effect is often not ideal.
An embodiment of the present application is described below with reference to fig. 1.
Example 1
According to an embodiment of the present application, in a first aspect, the present application provides a method for monitoring a belt conveyor, including:
s1, acquiring current operation data of a belt conveyor;
in the actual operation process, the operation data of the belt conveyor needs to be acquired in real time. The operation data can be the movement speed of the belt on the belt conveyor, the material flow on the belt, the working temperature of each part on the belt conveyor, the working time of the belt conveyor, the operation position of the belt and the distribution condition of the materials on the belt. Of course, the present embodiment is merely illustrative of the type of the operation data, but is not limited thereto, and those skilled in the art can vary according to actual situations. For the acquisition mode of the operation data, a person skilled in the art can set a sensor with a corresponding function at a corresponding position. Of course, the monitoring device with the corresponding function may be provided, and the same technical effects may be achieved.
S2, outputting the material conveying flow of the belt conveyor based on the current operation data;
after the current operation data is obtained, the material conveying flow of the belt conveyor can be directly screened out according to the current operation data, and of course, calculation can be directly performed according to data related to the material conveying flow in the current operation data. For example, since the volume of material that can be held by the belt on the belt conveyor is constant, the material delivery flow can be directly calculated when the belt is fully loaded. Or the density of the materials is fixed, and the material conveying flow of the materials on the belt can be directly calculated according to the weight. In the embodiment of the application, an on-site terminal can be arranged, a monitoring screen is arranged on the on-site terminal, and after the current operation data is input into the on-site terminal, the material conveying flow of the belt conveyor can be directly displayed on the monitoring screen. The original collected data and the result data can be uploaded to a higher-level management system according to a set frequency in a TCP/IP Server mode so as to realize further data display and application.
Of course, the present embodiment is merely illustrative of the way of outputting the flow rate of the material, but is not limited thereto, and those skilled in the art may change the way according to the actual situation, and may achieve the same technical effects.
S3, comparing the current operation data with the normal operation data;
and S4, outputting an alarm signal when the current operation data does not accord with the normal operation data.
Each operation data has a normal operation range and an abnormal operation range, wherein the data in the normal operation range is normal operation data, and the data in the abnormal operation range is abnormal operation data. After comparing the current operation data with the normal operation data, if the current operation data does not fall within the range of the normal operation data, the current operation data does not conform to the normal operation data, an alarm signal can be output through the on-site terminal.
For example, the working temperature is exemplified by the normal working temperature of the rotating shaft of the belt conveyor between 30 ℃ and 70 ℃, and when the current working temperature is 79 ℃, the abnormal working temperature of the rotating shaft of the belt conveyor is indicated, then an alarm signal is output through the on-site terminal, and the technician can control the belt conveyor to stop working at the moment and check in time.
So set up, can carry out real-time control to the material flow of belt feeder, simultaneously, current operation data that can real-time supervision belt feeder can export alarm signal when current operation data is unusual to can advance the early warning to the trouble that the belt feeder will appear, let the technician inspect the belt feeder in advance, and then guaranteed the normal work of belt feeder, so that can in time prescribe reasonable coal blending scheme.
In an alternative embodiment, a two-dimensional laser scanner is arranged on the belt conveyor, and the empty-load section data of the belt on the belt conveyor when empty and the material conveying section data of the belt when conveying materials are acquired through the two-dimensional laser scanner. Specifically, the two-dimensional laser scanner can acquire surface point cloud data on the belt, and then can obtain no-load section data of the belt in no-load and material conveying section data of the belt in material conveying according to the surface point cloud data. Then, the direct difference between the material conveying section data and the empty section data is the material flow value on the belt, and finally, the material conveying flow can be directly obtained based on the empty section data, the material conveying section data and the running speed of the belt.
By adopting a laser scanning technology and combining the running speed of the belt conveyor, the material conveying flow of the belt conveyor can be obtained in real time through an algorithm, and in addition, in combination with the running data of the belt conveyor when the belt conveyor is in no-load, a technician can perform data calculation on an on-site processing terminal, and the running data of the belt conveyor can be updated continuously, so that the technician can control the working state of the belt conveyor in real time. Meanwhile, the two-dimensional laser scanner is convenient to install, the two-dimensional laser scanner can dynamically collect the surface point cloud data of the belt conveyor and the belt conveyor in real time at a belt speed, the collected surface point cloud data of the belt conveyor can be subjected to burr correction, abnormal high-point data can be automatically removed, and therefore detection accuracy is improved. Further, the maintenance amount of the two-dimensional laser scanner is small, and the maintenance efficiency of technicians can be improved.
In an alternative embodiment, be provided with tachometer wheel and linear velocity meter on the belt feeder, the tachometer wheel contacts with the belt on the belt feeder for tachometer wheel and belt synchronous motion can carry out the dynamic collection of real-time belt speed to the belt feeder. And the speed measuring wheel is in communication connection with the line speed meter, and the speed measuring wheel and the line speed meter are in communication connection with the local terminal. The running speed can thus be measured by means of the tachometer wheel and the tachometer.
In an alternative embodiment, the feed flow includes instantaneous feed flow and cumulative feed flow.
In an alternative embodiment, when the monitored instantaneous flow exceeds 10% of the rated capacity, it is indicated that more material is conveyed on the belt, a certain pressure and abrasion are caused to the belt, and therefore, the capacity overrun warning is performed.
In an alternative embodiment, an overrun warning is made when the monitored instantaneous flow exceeds 10% of the rated capacity and the duration exceeds a set duration. Compared with the previous embodiment, the present embodiment can filter out uneven material on the belt by increasing the duration limit, and has too much material and too little material. If the duration exceeds the set duration, indicating that the material on the belt is in an excess state, a technician is required to process the belt. For example, the belt may be shut down, excess material on the belt may be removed with a take-out tool, and so on.
Of course, the present embodiment is merely illustrative of the excess processing mode, but is not limited thereto, and those skilled in the art can change the processing mode according to actual circumstances, and can achieve the same technical effects.
The arrangement can prevent excessive conveying capacity of the belt conveyor in the actual operation process, so that downstream materials are accumulated, accumulated materials cannot be treated in time, and normal operation of a stock yard and the belt conveyor is ensured. Meanwhile, the excessive transportation amount of the belt conveyor can increase the abrasion degree of the belt conveyor, so that the transportation amount is controlled in a proper range, the maintenance times of the belt conveyor are reduced, and the service life of the belt conveyor can be prolonged.
In an alternative embodiment, the monitoring method further comprises:
s5, taking the normal position of the idle belt as a judging reference point, and measuring the offset distance of the belt by a two-dimensional laser scanner;
s6, outputting an alarm signal of belt deviation when the deviation distance exceeds a preset distance of the width of the belt; the offset distances include a left offset distance and a right offset distance.
In the embodiment, the normal position of the idle belt is taken as a judging reference point, the left and right offset distances of the belt are measured by a two-dimensional laser scanner, the offset distances are displayed in a local terminal, and if the offset distances exceed 5% of the width of the belt, the belt offset alarm is output. Through carrying out real-time supervision to the offset distance of belt, can in time output alarm signal when the belt off tracking to make things convenient for the technician to handle at the first time, prevent the unable normal work of belt off tracking.
Of course, the present embodiment is merely illustrative of specific values of the preset distance, but is not limited thereto, and those skilled in the art may change according to actual situations, and may achieve the same technical effects.
In an alternative embodiment, the monitoring method further comprises:
s7, installing a two-dimensional laser scanner on the center line of the belt;
s8, respectively measuring the material flow on two sides of the center line by taking the center line as a reference point through a two-dimensional laser scanner;
s9, calculating the unbalanced load rate according to the material flow on two sides of the central line; the partial load rate is calculated by the difference between the flow rates at the left and right sides and the sum of the flow rates at the left and right sides, and is displayed in the local terminal.
S10, outputting an unbalanced load alarm signal when the sum of the material flow rates at two sides of the middle line is larger than a preset flow rate and the unbalanced load rate is larger than a preset unbalanced load value. Of course, in this embodiment, the preset flow and the preset unbalanced load value may be changed according to the actual situation. For example, the preset flow rate may be 50%, 60%, 70%, etc., and the preset unbalanced load value may be 10%, 20%, 30%, etc.
When the belt conveyor is in a light load state, the specific distribution of materials does not affect the belt conveyor, and meanwhile, when the belt conveyor is in a heavy load state and the distribution of the materials is balanced, the pressure of the materials on the belt conveyor is balanced, and the belt conveyor can work normally. Once the belt conveyor is in a heavy-load state, when the material distribution is unbalanced, the unbalanced load condition is very easy to occur, and the belt conveyor can be damaged to a certain extent under long-time operation. According to the application, through real-time monitoring of the materials on the two sides of the belt conveyor, when the belt conveyor is in an unbalanced load state, an alarm signal can be sent out in time, so that technicians can process the materials in time.
Example 2
In a second aspect, the application provides a stockyard comprising at least two belt conveyors and a transfer station.
In particular, the transfer station is disposed within the field of the stockyard, and the transfer station is typically disposed on two floors of the ground, so the vertical height of the transfer station is higher than the belt conveyor within the field. The first belt conveyor is connected with the feed inlet of the transfer station, the second belt conveyor is connected with the discharge outlet of the transfer station, and the belt conveyor adopts the monitoring method according to any one of the above embodiments. That is, the transfer station and the two belt conveyors form a trapezoid structure, the platform of the transfer station is the upper edge of the trapezoid, the two belt conveyors are respectively two waists of the trapezoid, and the ground is the lower edge of the trapezoid.
In an alternative embodiment, the discharge port of the transfer station is connected to the second belt conveyor via a transfer chute, and the two-dimensional laser scanners are mounted above the first belt conveyor and the second belt conveyor, respectively. And respectively acquiring the material flow of the first belt conveyor and the material flow of the second belt conveyor through two-dimensional laser scanners. And when the difference between the material flow of the first belt conveyor and the material flow of the second belt conveyor exceeds a preset difference value within a preset time interval and continuously exceeds a first time, outputting an alarm signal for blocking the transfer launder. For example, the first belt conveyor has a material flow rate of 10, the second belt conveyor has a material flow rate of 5, and the duration is longer, indicating that most of the material is blocked in the transfer launder.
Through carrying out the control respectively to two belt conveyors, can carry out real-time control to the operating condition of stock ground transfer chute, can in time judge whether transfer chute is in the jam state. So that the technician can handle in time.
In an alternative embodiment, the yard further comprises a stacker-reclaimer disposed within the yard, the stacker-reclaimer being adapted to convey material to the first belt conveyor. And regulating the material piling and taking flow according to the relation between the instantaneous flow and the material piling and taking flow of the material piling and taking machine. That is, when the first belt conveyor conveys less materials, the material piling and taking flow rate of the material piling and taking machine is controlled to be increased by a little, and when the first belt conveyor conveys more materials, the material piling and taking flow rate of the material piling and taking machine is controlled to be decreased by a little.
Although embodiments of the present application have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the application, and such modifications and variations fall within the scope of the application as defined by the appended claims.
Claims (11)
1. A method of monitoring a belt conveyor, comprising:
acquiring current operation data of a belt conveyor;
outputting the material conveying flow of the belt conveyor based on the current operation data;
comparing the current operation data with normal operation data;
and outputting an alarm signal when the current operation data is not consistent with the normal operation data.
2. The method of claim 1, wherein the belt conveyor is provided with a two-dimensional laser scanner,
acquiring no-load section data of a belt on the belt conveyor when no load is carried out and carrying section data of the belt when carrying materials through the two-dimensional laser scanner;
and obtaining the material conveying flow based on the no-load section data, the material conveying section data and the running speed of the belt.
3. The monitoring method according to claim 2, wherein the belt conveyor is provided with a tachometer wheel and a line speed meter,
the speed measuring wheel is contacted with a belt on the belt conveyor, so that the speed measuring wheel and the belt synchronously move;
the speed measuring wheel is in communication connection with the linear speed meter;
and measuring the running speed through the tachometer wheel and the linear speed meter.
4. A method of monitoring according to claim 2 or claim 3, wherein the feed flow rate comprises an instantaneous feed flow rate and a cumulative feed flow rate.
5. The method of monitoring according to claim 4, wherein the volume overrun alarm is given when the monitored instantaneous volume exceeds 10% of the rated volume.
6. The method of monitoring according to claim 5, wherein the volume overrun alarm is given when the monitored instantaneous volume exceeds 10% of the rated volume and the duration exceeds a set period of time.
7. A monitoring method according to claim 2 or 3, further comprising:
taking the normal position of the idle belt as a judging datum point, and measuring the offset distance of the belt by the two-dimensional laser scanner;
when the offset distance exceeds the preset distance of the width of the belt, outputting an alarm signal of belt deviation;
the offset distances include a left offset distance and a right offset distance.
8. The method of monitoring of claim 7, further comprising:
mounting the two-dimensional laser scanner on a centerline of the belt;
measuring the material flow on two sides of the center line by using the two-dimensional laser scanner and taking the center line as a reference point;
calculating the unbalanced load rate according to the material flow on two sides of the central line;
and outputting an unbalanced load alarm signal when the sum of the material flow rates at the two sides of the central line is larger than a preset flow rate and the unbalanced load rate is larger than a preset unbalanced load value.
9. A stockyard, comprising:
a transfer station arranged in the site of the stock yard;
the first belt conveyor is connected with a feed inlet of the transfer station, and the second belt conveyor is connected with a discharge outlet of the transfer station; the belt conveyor applying the monitoring method according to any one of claims 1 to 8.
10. The stockyard of claim 9, wherein the discharge port of the transfer station is connected to a second belt conveyor via a transfer chute; the two-dimensional laser scanners are respectively arranged above the first belt conveyor and the second belt conveyor;
respectively acquiring the material flow of the first belt conveyor and the material flow of the second belt conveyor through two-dimensional laser scanners;
and when the difference between the material flow of the first belt conveyor and the material flow of the second belt conveyor exceeds a preset difference value within a preset time interval and continuously exceeds a first time, outputting an alarm signal for blocking the transfer launder.
11. The stockyard of claim 10, further comprising:
the stacker-reclaimer is arranged in the field of the stock ground; the stacker-reclaimer is suitable for conveying materials to the first belt conveyor;
and regulating the material piling and taking flow according to the relation between the instantaneous flow and the material piling and taking flow of the material piling and taking machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310524798.9A CN116620780A (en) | 2023-05-10 | 2023-05-10 | Belt conveyor monitoring method and stock ground |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310524798.9A CN116620780A (en) | 2023-05-10 | 2023-05-10 | Belt conveyor monitoring method and stock ground |
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| Publication Number | Publication Date |
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| CN116620780A true CN116620780A (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310524798.9A Pending CN116620780A (en) | 2023-05-10 | 2023-05-10 | Belt conveyor monitoring method and stock ground |
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| Country | Link |
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| CN (1) | CN116620780A (en) |
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2023
- 2023-05-10 CN CN202310524798.9A patent/CN116620780A/en active Pending
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