CN116534530A - Raw coal transportation multistage protection system and method - Google Patents

Raw coal transportation multistage protection system and method Download PDF

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Publication number
CN116534530A
CN116534530A CN202310563106.1A CN202310563106A CN116534530A CN 116534530 A CN116534530 A CN 116534530A CN 202310563106 A CN202310563106 A CN 202310563106A CN 116534530 A CN116534530 A CN 116534530A
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CN
China
Prior art keywords
conveying belt
detection
transportation
fault
laser
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310563106.1A
Other languages
Chinese (zh)
Inventor
龙大鹏
王玉福
刘博磊
王磊
孙波
郭志伟
李静波
杨淑欣
孙奇志
张太浩
普璐
郭昕鹏
刘薇
李桂敏
杨青山
闫萍
胡开庚
马龙
刘少辉
高燕
李胜利
韩国庆
董辉
苗祥
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telecommunications Branch Kailuan Group LLC
Zhongluan Technology Co ltd
Original Assignee
Telecommunications Branch Kailuan Group LLC
Zhongluan Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telecommunications Branch Kailuan Group LLC, Zhongluan Technology Co ltd filed Critical Telecommunications Branch Kailuan Group LLC
Priority to CN202310563106.1A priority Critical patent/CN116534530A/en
Publication of CN116534530A publication Critical patent/CN116534530A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • B65G15/60—Arrangements for supporting or guiding belts, e.g. by fluid jets
    • B65G15/64—Arrangements for supporting or guiding belts, e.g. by fluid jets for automatically maintaining the position of the belts
    • 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
    • B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
    • B65G23/02—Belt- or chain-engaging elements
    • B65G23/04—Drums, rollers, or wheels
    • 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
    • B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
    • B65G23/24—Gearing between driving motor and belt- or chain-engaging elements
    • B65G23/30—Variable-speed gearing
    • 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
    • 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
    • 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
    • B65G43/04—Control devices, e.g. for safety, warning or fault-correcting detecting slip between driving element and load-carrier, e.g. for interrupting the drive
    • 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
    • B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
    • B65G2203/02—Control or detection
    • B65G2203/0266—Control or detection relating to the load carrier(s)
    • B65G2203/0275—Damage on the load carrier
    • 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
    • B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
    • B65G2203/04—Detection means
    • B65G2203/041—Camera
    • 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
    • B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
    • B65G2203/04—Detection means
    • B65G2203/042—Sensors
    • B65G2203/044—Optical
    • 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]

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Conveyors (AREA)

Abstract

The invention provides a raw coal transportation multistage protection system and a method, wherein the raw coal transportation multistage protection system comprises a transportation unit, a detection unit and a control unit, the transportation unit comprises a conveying belt, and the conveying belt is used for transporting materials; the detection unit comprises a coal pile identification module and a tearing identification module, the coal pile identification module comprises a first image acquisition assembly and a first laser detection assembly which are arranged above the conveying belt, and the tearing identification module comprises a second image acquisition assembly, a second laser detection assembly and a belt speed detection assembly which are arranged below the conveying belt; the control unit comprises an upper computer, a display device and an early warning device, and the upper computer is respectively and electrically connected with the detection unit and the transportation unit. The invention analyzes and identifies the video image information in the transportation process, and effectively improves the safety of the raw coal transportation system.

Description

Raw coal transportation multistage protection system and method
Technical Field
The invention belongs to the technical field of coal mine transportation safety detection, and relates to a raw coal transportation multistage protection system and method.
Background
The raw coal transportation lifting system is characterized by more links and devices, and each device and each link have problems and can influence the normal production of a mine, so that the system is safe, reliable and efficient in operation and is an important guarantee for improving the production efficiency and economic benefit of the coal mine. The existing coal mine transportation mode generally utilizes belt transportation, and the maintenance of the traditional belt transportation system mainly comprises traditional sensors and manual monitoring.
However, because the belt tunnel environment is relatively poor, the service life and accuracy of the traditional sensor installed on the belt conveyor are reduced due to long-term use, the actual effect is affected, and part of the traditional sensor is installed below the belt, and needs to be regularly adjusted, and the accuracy is greatly changed, so that the stability of the traditional sensor is poor, and the maintenance cost is increased. In addition, the traditional monitoring means mainly comprise manual roadway inspection and remote camera monitoring, and can only perform post-processing and maintenance, so that failure can not be prejudged in advance, and production stopping loss is reduced. For example, belt tearing and coal piling are often problematic to the extent that they can be found in the field or by video, which has resulted in significant losses.
Therefore, it is very important to provide an advanced and complete detection system, which can monitor the condition of the whole system for transporting raw coal in real time, discover faults in time and give an alarm in real time so as to minimize potential safety hazards.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a raw coal transportation multistage protection system and method, which are used for analyzing and identifying video image information in the transportation process, effectively improving the safety of a raw coal transportation system, remotely monitoring raw coal system equipment, receiving remote fault data and information, and realizing early warning on the occurrence of faults so as to timely process the faults and realize multistage protection of the raw coal belt transportation system.
To achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a raw coal transportation multi-stage protection system, which comprises a transportation unit, a detection unit and a control unit, wherein the transportation unit comprises a conveying belt, and the conveying belt is used for transporting materials;
the detection unit comprises a coal pile identification module and a tearing identification module, wherein the coal pile identification module comprises a first image acquisition component and a first laser detection component which are arranged above the conveying belt, the first laser detection component is used for transmitting laser to materials on the conveying belt, the first image acquisition component is used for acquiring image information within a laser range emitted by the first laser detection component, the tearing identification module comprises a second image acquisition component, a second laser detection component and a belt speed detection component which are arranged below the conveying belt, the second laser detection component is used for transmitting laser to the conveying belt, the second image acquisition component is used for acquiring image information within the laser range emitted by the second laser detection component, and the belt speed detection component is used for detecting the moving speed of the conveying belt;
The control unit comprises an upper computer, a display device and an early warning device, wherein the upper computer is electrically connected with the detection unit and the transportation unit respectively and is used for processing analysis data information, the upper computer is also electrically connected with the display device and the early warning device respectively and is used for displaying the data information and the analysis result of the detection unit, and the early warning device is used for giving an alarm.
The raw coal transportation multistage protection system provided by the invention is used for analyzing and anomaly identifying video image information in the transportation process based on the collection of various image information, so that the multistage protection of the raw coal belt transportation system is realized, the multi-parameter analysis is carried out in the whole transportation process, the fault identification is realized, and the safety of the raw coal transportation system is effectively improved.
It should be noted that the transporting unit in the invention may be a combined flow line of multiple belt conveyors, that is, the transporting unit includes multiple belt conveyors that are sequentially connected, and the material on the former belt conveyor falls onto the conveying belt of the latter belt conveyor, so that the material is sequentially transported to the target site through the multiple conveying belts.
As a preferable technical scheme of the invention, the conveying unit further comprises a power module, wherein the power module is used for driving the conveying belt to move. The power module comprises a driving roller, a speed reducing device and a motor device, wherein the conveying belt is wound on the driving roller, two ends of the speed reducing device are respectively connected with the driving roller and the motor device and used for driving the conveying belt to move, and bearing seats are independently arranged on the driving roller, the speed reducing device and the motor device.
The detection unit further comprises a power detection module, the power detection module comprises an information conditioning device and a plurality of vibration sensing assemblies, the information conditioning device is electrically connected with the power detection module, the vibration sensing assemblies are independently arranged on bearing seats of the driving roller, the speed reducing device and the motor device, the vibration sensing assemblies are used for detecting vibration states of the bearing seats, the information conditioning device is electrically connected with the upper computer, and the information conditioning device is used for integrating vibration state information.
Preferably, the power module further comprises a plurality of pull switches, and the pull switches are uniformly distributed on two sides of the conveying belt.
Preferably, the power detection module further comprises a plurality of first sound detection assemblies, and the first sound detection assemblies are used for collecting sound signals in the running process of the bearing seat and transmitting the sound signals to the control unit.
As a preferred technical scheme of the invention, the detection unit further comprises a multi-parameter detection module, wherein the multi-parameter detection module comprises a smoke detection component, a temperature detection component and a speed detection component; the smoke detection assembly is used for detecting the smoke concentration in the transportation unit; the temperature detection component is used for detecting temperature information of the transportation unit; the speed detection assembly is used for detecting the running speed of the conveying belt.
Preferably, a sprinkler is further arranged in the transportation unit, the sprinkler is provided with an electromagnetic switch valve, and the electromagnetic switch valve is electrically connected with the control unit so as to control the sprinkler to be automatically opened, and the sprinkler is used for sprinkling water and cooling.
Preferably, the temperature detection assembly is arranged on a driving roller of the power module and is used for measuring the temperature of the driving roller.
Preferably, the speed detection assembly is arranged on the surface of the conveying belt or on a driving roller of the power module.
As a preferable technical scheme of the invention, the conveying unit further comprises a plurality of supporting rollers, the supporting rollers are uniformly distributed along the length direction of the conveying belt, and the supporting rollers are used for supporting the conveying belt.
The support carrier roller comprises a first roller column, a second roller column and a third roller column, wherein the first roller column and the second roller column are respectively positioned at two sides of the conveying belt and independently extend out of the conveying belt, and two ends of the third roller column are respectively abutted to the first roller column and the second roller column.
As a preferable technical scheme of the invention, the detection unit further comprises a deviation recognition module, wherein the deviation recognition module is electrically connected with the control unit and is used for detecting whether the conveying belt is deviated or not.
Preferably, the off tracking recognition module comprises a plurality of off tracking image recognition components, the off tracking image recognition components are uniformly distributed along the length direction of the conveying belt, the off tracking image recognition components are suspended above the conveying belt, and the off tracking image recognition components are correspondingly arranged with the supporting carrier rollers and are used for recognizing the supporting carrier rollers.
Preferably, the deviation identifying module further comprises a plurality of deviation rectifying components uniformly distributed along the length direction of the conveying belt, the deviation rectifying components comprise a first swinging probe rod and a second swinging probe rod, the first swinging probe rod and the second swinging probe rod are respectively located at two sides of the conveying belt, the first swinging probe rod and the second swinging probe rod are respectively connected with the supporting carrier roller in a rotating mode, and the first swinging probe rod and the second swinging probe rod are independently electrically connected with the upper computer.
As a preferred technical scheme of the invention, the detection unit further comprises a plurality of second sound detection components, the second sound detection components are electrically connected with the control unit, and the second sound detection components are used for collecting sound signals in the running process of the supporting roller and transmitting the sound signals to the control unit.
As a preferable technical scheme of the invention, the coal pile identification module and the tearing identification module are arranged close to the blanking point of the conveying belt.
Preferably, the coal pile identification module and the tearing identification module further comprise a first self-cleaning assembly and a second self-cleaning assembly respectively and independently, the first self-cleaning assembly is used for cleaning the first image acquisition assembly and the first laser detection assembly, and the second self-cleaning assembly is used for cleaning the second image acquisition assembly and the second laser detection assembly.
Preferably, the first image acquisition assembly and the first laser detection assembly are independently hung and arranged above the conveying belt.
Preferably, the second image acquisition assembly and the second laser detection assembly are respectively fixed below the conveying belt through a first bracket and a second bracket.
Preferably, the distance between the second image acquisition assembly and the conveying belt is more than or equal to 500mm.
Preferably, the angle of the second laser detection component for emitting laser is 45-90 degrees.
In a second aspect, the present invention provides a method for protecting raw coal in a multi-stage manner, the method for protecting raw coal in a multi-stage manner using the system for protecting raw coal in a multi-stage manner according to the first aspect, the method for protecting raw coal in a multi-stage manner comprising:
Acquiring image information in the running process of a conveying belt to generate running state information;
analyzing and judging whether the transportation unit is in a fault state according to the running state information;
based on the analysis and judgment result, the early warning device is controlled to give an alarm, and the transportation unit is controlled to stop running.
As a preferred embodiment of the present invention, the analysis and judgment includes:
judging whether the material on the conveying belt has a coal stacking fault, judging whether the conveying belt has a longitudinal tearing fault, judging whether the power module has abnormal operation, judging whether the conveying belt has a deviation fault, judging whether the conveying belt has a smoke generating fault, and judging whether the conveying belt has a slipping fault.
As a preferable technical solution of the present invention, the judging of the coal stacking fault includes:
s101, setting a height threshold;
s102, emitting laser to materials on a conveying belt by using a first laser detection assembly, collecting image information in a laser range by using a first image acquisition assembly, and transmitting the image information to an upper computer for edge analysis and calculation so as to obtain the height profile of the materials;
s103, comparing the height profile with a height threshold, and when the height profile is greater than or equal to the height threshold, controlling the early warning device to give an alarm and displaying a 'coal pile fault' on the display device.
Preferably, the judging of the longitudinal tear fault includes:
s201, setting a length threshold;
s202, emitting laser to the lower surface of the conveying belt by using a second laser detection assembly, collecting image information in a laser range by using a second image acquisition assembly, transmitting the image information to an upper computer, and identifying whether a crack occurs by performing edge detection by the upper computer based on a triangular ranging method;
s203, calculating the tearing length according to the moving speed of the conveying belt acquired by the belt speed detection assembly, comparing the tearing length with a length threshold, displaying a longitudinal tearing fault on a display device when the tearing length is greater than the length threshold, triggering an early warning device to give an alarm, and controlling a conveying unit to stop running in a feedback mode.
Preferably, the judging of the abnormal operation includes:
the vibration sensing assembly is used for respectively collecting vibration signals of the bearing seat of the driving roller, the bearing seat of the speed reducing device and the bearing seat of the motor device, and independently transmitting the vibration signals to the information conditioning device, the information conditioning device converts and amplifies the received vibration signals and transmits the vibration signals to the upper computer, the upper computer analyzes and processes the vibration signals, and according to analysis results, the display device is controlled to display abnormal operation, and the early warning device is controlled to give an alarm.
Preferably, the determining of the deviation fault includes:
the method comprises the steps of collecting image information of a supporting idler by using a deviation image identification component, identifying the number of rollers exposed in the image information, when the number of rollers is fixed, the conveying belt is not deviated, when the number of rollers is reduced, the conveying belt is deviated, an identification result is fed back to a host computer, the host computer determines the position of the deviation image identification component, controls an early warning device to send out an alarm, and displays a deviation fault on a display device.
Preferably, the judging of the smoking failure includes:
s301, presetting a safety value and an alarm value;
s302, detecting the smoke concentration in the transportation unit by using a smoke detection assembly, transmitting the smoke concentration to an upper computer, and controlling a sprinkler to be started for sprinkling and cooling and triggering an early warning device to warn when the smoke concentration is larger than an alarm value by the upper computer;
and S303, the smoke detection component continuously detects the smoke concentration in the transportation unit, when the smoke concentration is reduced to a safe value, the sprinkler is controlled to be closed, and when the smoke concentration is continuously increased, the display device displays 'smoke failure', and the transportation unit is controlled to stop running.
Preferably, the alarm value is 0.1mg/m 3 。
Preferably, the judging of the slip fault includes:
s401, setting a rated speed;
s402, detecting the running speed of the conveying belt by using a speed detection assembly, and transmitting the running speed to an upper computer, wherein the upper computer judges according to the running speed;
s403, when the running speed is lower than 75% of the rated speed, the display device displays a slipping fault and triggers the early warning device to give an alarm, and when the running speed is lower than 30% of the rated speed, the display device displays a belt breakage fault and triggers the early warning device to give an alarm to control the transportation unit to stop running;
s404, when the running speed exceeds 115% of the rated speed, the display device displays overspeed fault and triggers the early warning device to give an alarm.
The system refers to an equipment system, a device system or a production device.
Compared with the prior art, the invention has the beneficial effects that:
according to the raw coal transportation multistage protection system and method provided by the invention, based on the collection of various image information, the video image information in the transportation process is analyzed and abnormal recognition is carried out, so that the multistage protection of the raw coal belt transportation system is realized, the multi-parameter analysis is carried out in the whole transportation process, the fault recognition is realized, and the safety of the raw coal transportation system is effectively improved.
Drawings
FIG. 1 is a schematic structural view of a multi-stage protection system for raw coal transportation according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a power module according to an embodiment of the present invention;
FIG. 3 is a schematic illustration of a conveyor belt according to one embodiment of the present invention when the conveyor belt is not deflected;
FIG. 4 is a schematic diagram of a conveyor belt according to one embodiment of the present invention when the conveyor belt is deflected;
FIG. 5 is a schematic diagram illustrating connection between a control unit and a power detection module according to an embodiment of the present invention;
FIG. 6 is a side view of a coal pile identification module according to one embodiment of the present invention;
FIG. 7 is a front view of a coal pile identification module according to one embodiment of the present invention;
FIG. 8 is a front view of a tear recognition module according to one embodiment of the present invention;
fig. 9 is a side view of a tear recognition module according to one embodiment of the present invention.
Wherein, 1-a conveyor belt; 2-a first image acquisition assembly; 3-a first laser detection assembly; 4-a second image acquisition assembly; 5-a second laser detection assembly; 6-a belt speed detection assembly; 7-an upper computer; 8-a display device; 9-an early warning device; 10-driving a roller; 11-a speed reduction device; 12-motor means; 13-a vibration sensing assembly; 14-pull switch; 15-a smoke detection assembly; 16-a temperature detection assembly; 17-a speed detection assembly; 18-supporting carrier rollers; 19-off-tracking image recognition component; 20-a first swinging probe rod; 21-a second swinging probe rod; 22-a first scaffold; 23-a second scaffold; 24-electromagnetic switch valve; 25-information conditioning device.
Detailed Description
It is to be understood that in the description of the present invention, the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present invention 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 are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
It should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
In a specific embodiment, the invention provides a raw coal transportation multistage protection system, which comprises a transportation unit, a detection unit and a control unit, wherein the control unit is respectively and electrically connected with the transportation unit and the detection unit.
In some embodiments, the conveying unit comprises a conveying belt 1 and a power module, wherein the conveying belt 1 is used for conveying materials, and the power module is used for driving the conveying belt 1 to move. As shown in fig. 1 and 2, the power module includes a driving roller 10, a speed reduction device 11 and a motor device 12, the conveying belt 1 is wound on the driving roller 10, two ends of the speed reduction device 11 are respectively connected with the driving roller 10 and the motor device 12, and are used for driving the conveying belt 1 to move, and the driving roller 10, the speed reduction device 11 and the motor device 12 are independently provided with bearing seats. The conveying unit further comprises a plurality of supporting rollers 18, the supporting rollers 18 are uniformly distributed along the length direction of the conveying belt 1, and the supporting rollers 18 are used for supporting the conveying belt 1. As shown in fig. 3 and 4, the supporting roller 18 includes a first roller, a second roller, and a third roller, where the first roller and the second roller are respectively located at two sides of the conveyor belt 1 and independently extend out of the conveyor belt 1, and two ends of the third roller are respectively abutted to the first roller and the second roller. The conveying unit can be a combined flow line of a plurality of belt conveyors, namely the conveying unit comprises a plurality of belt conveyors which are in butt joint in sequence, and materials on the former belt conveyor fall onto the conveying belt 1 of the latter belt conveyor, so that the materials are conveyed to a target site through the plurality of conveying belts 1 in sequence.
In some embodiments, a sprinkler is further disposed in the transportation unit, the sprinkler is provided with an electromagnetic switch valve 24, and the electromagnetic switch valve 24 is electrically connected to the control unit, so as to control the sprinkler to be automatically opened, and the sprinkler is used for sprinkling water and cooling. The sprinkler can automatically control start and stop to spray water, extinguish smoke and extinguish fire according to signals provided by the overtemperature, smoke and other detection components.
In some embodiments, as shown in fig. 5, the control unit includes an upper computer 7, a display device 8 and an early warning device 9, the upper computer 7 is electrically connected to the detection unit and the transportation unit respectively, and is used for processing analysis data information, the upper computer 7 is also electrically connected to the display device 8 and the early warning device 9 respectively, the display device 8 is used for displaying the data information and the analysis result of the detection unit, and the early warning device 9 is used for sending an alarm. The control unit is used as a terminal for operation and monitoring of operation and maintenance personnel in the coal mine, the upper computer 7, the display device 8 and the early warning device 9 are arranged on the well, a complete communication network is established in the whole inspection area, bidirectional data interaction is realized, remote monitoring is carried out on related equipment in the underground transportation unit and the detection unit, centralized management is realized, digital operation information of belt transportation is collected, and the digital operation information is uploaded in real time through wireless transmission, and early warning is carried out.
In some embodiments, the detection unit includes a coal pile identification module and a tear identification module, and is separately disposed near the blanking point of the conveyor belt 1.
As shown in fig. 6 and 7, the coal pile identification module includes a first image acquisition assembly 2 and a first laser detection assembly 3, wherein the first image acquisition assembly 2 and the first laser detection assembly 3 are suspended above the conveyor belt 1, the first laser detection assembly 3 is used for emitting laser to materials on the conveyor belt 1, and the first image acquisition assembly 2 is used for acquiring image information within a laser range emitted by the first laser detection assembly 3. According to the invention, the first laser detection component 3 projects laser to the material surface of the conveying belt 1, so that the projected light bar changes along with fluctuation of the shape of the material surface, and the first image acquisition component 2 shoots a contour image of the material surface to perform non-contact detection, and has the characteristics of no contact with the conveying belt 1, no abrasion, no dust or water, less maintenance work, durability and the like. The first image acquisition component 2 can be arranged perpendicular to a tunnel at the top of the conveying belt 1, the inclination angle is 45-90 degrees, the video content is ensured to be clear, a light supplementing lamp can be added for real-time monitoring of a region with poor vision, and when a coal block accumulated image appears, the coal accumulation fault can be judged. The first image acquisition component 2 adopts a stainless steel shell and a four-core connector to access signals and a power supply, a thousands of frames of industrial cameras are arranged in the first image acquisition component, the optical size is 1/1.8', the resolution ratio is 1600 multiplied by 1200, the maximum frame rate is 40fps, the data bit number is 8/14, the resolution ratio can reach 10 mu, and the aberration can be furthest reduced by adopting various optical correction modes. The principle of the coal pile identification module is that the first image acquisition component 2 and the first laser detection component 3 are adopted to irradiate on the surface of the coal pile of the conveying belt 1 at a certain angle, the acquired video images are used for carrying out edge analysis and calculation to obtain the height profile of the coal pile falling to the ground, and the non-contact principle is adopted for detection, so that the error of coal pile detection caused by inertial throwing of materials transported during coal unloading can be avoided.
As shown in fig. 8 and 9, the tearing recognition module includes a second image acquisition component 4, a second laser detection component 5 and a belt speed detection component 6, where the second image acquisition component 4 and the second laser detection component 5 are fixed below the conveyor belt 1 by a first bracket 22 and a second bracket 23 respectively, the second laser detection component 5 is used for emitting laser to the conveyor belt 1, the second image acquisition component 4 is used for acquiring image information within a laser range emitted by the second laser detection component 5, and the belt speed detection component 6 is used for detecting a moving speed of the conveyor belt 1 so as to detect whether a scratch or a longitudinal tear occurs on the surface of the conveyor belt 1. The linear distance between the second image acquisition assembly 4 and the conveying belt 1 is more than or equal to 500mm, and the angle of the laser emitted by the second laser detection assembly 5 is 45-90 degrees. Since the longitudinal tearing of the conveyor belt 1 generally occurs when large gangue with pointed protrusions or sharp steel drills appear in the process of discharging coal onto the conveyor belt 1, the second image acquisition assembly 4 can be installed in the range of 20m in the running direction of the conveyor belt 1 in front of the coal dropping point. In the using process, a laser line is emitted to the bottom of the conveying belt 1 by the second laser detection assembly 5 to serve as an auxiliary purpose of video acquisition, discrimination and analysis, the second image acquisition assembly 4 is responsible for acquiring a video picture of an adhesive tape in the irradiation range of the laser line, the upper computer 7 is electrically connected with the second image acquisition assembly 4 and the second laser detection assembly 5, acquired data are transmitted to the upper computer 7 to be subjected to data acquisition, analysis, judgment and storage, and if the conveying belt 1 is detected to be torn, the early warning device 9 is controlled to send an alarm signal.
In some embodiments, the coal pile identification module and the tear identification module further comprise a first self-cleaning assembly and a second self-cleaning assembly, respectively, the first self-cleaning assembly being used for cleaning the first image acquisition assembly 2 and the first laser detection assembly 3, and the second self-cleaning assembly being used for cleaning the second image acquisition assembly 4 and the second laser detection assembly 5. The cleaning components of the coal stacking recognition module and the tearing recognition module can effectively avoid misoperation caused by on-site environmental problems, and the detection reliability is improved.
In some embodiments, the detection unit further comprises a multi-parameter detection module, as shown in fig. 1, comprising a smoke detection assembly 15, a temperature detection assembly 16, and a speed detection assembly 17. The smoke detection component 15 is used for detecting the smoke concentration in the transportation unit, and when the smoke concentration in the transportation unit reaches 1.5% in 2 seconds, smoke protection alarms and stops the operation of the transportation belt 1, and meanwhile, the sprinkler is started to spray water for cooling. The temperature detection assembly 16 is disposed on the driving roller 10 of the power module for measuring the temperature of the driving roller 10. The speed detection assembly 17 is used for detecting the running speed of the conveyor belt 1. The speed detecting assembly 17 is arranged on the surface of the conveying belt 1 or on the driving roller 10 of the power module.
In some embodiments, the detecting unit further includes a deviation identifying module, where the deviation identifying module is electrically connected to the control unit, and the deviation identifying module is configured to detect whether the conveying belt 1 deviates. As shown in fig. 3 and fig. 4, the deviation recognition module includes a plurality of deviation image recognition components 19, a plurality of deviation image recognition components 19 are uniformly distributed along the length direction of the conveying belt 1, the deviation image recognition components 19 are suspended above the conveying belt 1, and the deviation image recognition components 19 are correspondingly arranged with the supporting carrier rollers 18 and are used for recognizing the supporting carrier rollers 18. The invention adopts the deviation image recognition component 19 to be arranged above the central line of the conveying belt 1, acquires the image of the supporting idler roller 18, and when the conveying belt 1 is not deviated, the number of exposed roller columns in the image of the conveying belt 1 acquired from top to bottom is fixed, and when the conveying belt 1 is deviated, the roller columns on one side can be blocked by the belt, and when the number of the platforms is regular and is less than the number, the deviation fault is recognized, and the deviation alarm is generated.
In some embodiments, as shown in fig. 1, the deviation identifying module further includes a plurality of deviation rectifying components uniformly distributed along the length direction of the conveying belt 1, the deviation rectifying components include a first swinging probe rod 20 and a second swinging probe rod 21, the first swinging probe rod 20 and the second swinging probe rod 21 are respectively located at two sides of the conveying belt 1, the first swinging probe rod 20 and the second swinging probe rod 21 are respectively and rotatably connected with the supporting carrier roller 18, and the first swinging probe rod 20 and the second swinging probe rod 21 are independently and electrically connected with the upper computer 7. According to the invention, a pair of first swing probe rods 20 and second swing probe rods 21 are arranged along the line of the conveying belt 1 every 100m, when the conveying belt 1 is deviated, the early warning device 9 is controlled to send out an audible and visual alarm signal, the position of a deviation correcting component can be identified on the display device 8, and the deviation angle of the conveying belt 1 can be adjusted.
In some embodiments, the detection unit further includes a power detection module, as shown in fig. 5, the power detection module includes an information conditioning device 25 electrically connected to the power detection module and a plurality of vibration sensing assemblies 13, and the plurality of vibration sensing assemblies 13 are independently disposed on bearing seats of the driving roller 10, the speed reduction device 11 and the motor device 12, the vibration sensing assemblies 13 are used for detecting vibration states of the bearing seats, the information conditioning device 25 is further electrically connected to the upper computer 7, and the information conditioning device 25 is used for integrating vibration state information. The driving roller 10 directly acts on the conveyor belt 1, and transmits power to the conveyor belt 1 and is disturbed by the conveyor belt 1, and under the disturbance, the bearing is the most frequently occurring fault. One end of the speed reducing device 11 is connected with the motor device 12, the other end is connected with the driving roller 10, the speed reducing and distance increasing effects are achieved through gear transmission, and the normal operation of the gear, the bearing and other core components is an object to be monitored by fault diagnosis. The motor device 12 is used as a power source for the operation of the conveyor belt 1, and a common fault is a bearing fault. Therefore, the vibration sensing assembly 13 is adopted to detect the running state of the bearing, and the identification of the running fault of the power module can be realized.
The power module further comprises a plurality of pull switches 14, and the pull switches 14 are uniformly distributed on two sides of the conveying belt 1. The pull-cord switch 14 of the present invention is used for locking protection and fault identification for controlling emergency stop, and a pull-cord two-way emergency stop switch is installed every 100m along the belt, and the switch should have self-locking and resetting functions. When the wire rope is pulled, the pull switch 14 is operated, the control console sends out an alarm signal and stops in an emergency, and the position of the pull switch 14 can be identified on the display device 8. When an emergency occurs, a person can effectively terminate the operation of the belt conveyor by utilizing the emergency stop stay wire at any time within the range of not more than 50m from the emergency stop switch. Aiming at the condition of long belt distance, a relay power supply is additionally arranged for the emergency stop of the stay wire, so that the reliable implementation of the emergency stop function is ensured.
In some embodiments, the power detection module further includes a plurality of first sound detection components, where the first sound detection components are configured to collect sound signals during operation of the bearing seat and transmit the sound signals to the control unit. The detection unit further comprises a plurality of second sound detection components, the second sound detection components are electrically connected with the control unit, and the second sound detection components are used for collecting sound signals in the operation process of the supporting roller 18 and transmitting the sound signals to the control unit. In the transportation process, when the support carrier roller 18 is worn and the bearing is damaged and other abnormal conditions occur, the abnormal conditions often occur along with the occurrence of 'sharp' sound, and the abnormal conditions are greatly different from normal operation sound.
In another embodiment, the invention provides a method for protecting raw coal transportation in multiple stages, which adopts the system for protecting raw coal transportation in multiple stages according to one embodiment, and comprises the following steps:
acquiring image information in the running process of the conveyor belt 1 to generate running state information;
analyzing and judging whether the transportation unit is in a fault state according to the running state information;
based on the analysis and judgment result, the early warning device 9 is controlled to give an alarm, and the transportation unit is controlled to stop running.
The analysis and judgment comprises the following steps: judging whether the material on the conveying belt 1 has a coal stacking fault, judging whether the conveying belt 1 has a longitudinal tearing fault, judging whether the power module has abnormal operation, judging whether the conveying belt 1 has a deviation fault, judging whether the conveying belt 1 has a smoke generating fault, and judging whether the conveying belt 1 has a slipping fault.
In some embodiments, the determination of a coal pile fault comprises:
s101, setting a height threshold;
s102, utilizing a first laser detection assembly 3 to emit laser to materials on a conveying belt 1, adopting a first image acquisition assembly 2 to acquire image information in a laser range, and transmitting the image information to an upper computer 7 for edge analysis and calculation so as to acquire the height profile of the materials;
S103, comparing the height profile with a height threshold, and when the height profile is greater than or equal to the height threshold, controlling the early warning device 9 to give an alarm and displaying a 'coal pile fault' on the display device 8.
In some embodiments, the judging of the longitudinal tear failure includes:
s201, setting a length threshold;
s202, emitting laser to the lower surface of the conveying belt 1 by using a second laser detection assembly 5, collecting image information in a laser range by using a second image collection assembly 4, transmitting the image information to an upper computer 7, and identifying whether a crack occurs by the upper computer 7 based on a triangular ranging method;
s203, calculating the tearing length according to the moving speed of the conveying belt 1 acquired by the belt speed detection assembly 6, comparing the tearing length with a length threshold, displaying a longitudinal tearing fault on the display device 8 when the tearing length is greater than the length threshold, triggering the early warning device 9 to give an alarm, and controlling the conveying unit to stop running in a feedback mode.
In some embodiments, the determination of abnormal operation includes: vibration signals of the bearing seat of the driving roller 10, the bearing seat of the speed reducing device 11 and the bearing seat of the motor device 12 are respectively collected by the vibration sensing component 13 and are independently transmitted to the information conditioning device 25, the information conditioning device 25 converts and amplifies the received vibration signals and transmits the converted and amplified vibration signals to the upper computer 7, the upper computer 7 analyzes and processes the vibration signals, and controls the display device 8 to display abnormal operation according to analysis results, and the early warning device 9 is controlled to give an alarm.
In some embodiments, the determining of the deviation fault includes: the image information of the supporting idler 18 is acquired by using the deviation image recognition component 19, the number of the exposed rollers in the image information is recognized, when the number of the rollers is fixed, the conveyor belt 1 is not deviated, when the number of the rollers is reduced, the conveyor belt 1 is deviated, the recognition result is fed back to the upper computer 7, the upper computer 7 determines the position of the deviation image recognition component 19, the early warning device 9 is controlled to give an alarm, and the deviation fault is displayed on the display device 8.
In some embodiments, the determination of the smoking failure comprises:
s301, presetting a safety value and an alarm value, wherein the alarm value is 0.1mg/m 3 ；
S302, detecting the smoke concentration in the transportation unit by using the smoke detection assembly 15, transmitting the smoke concentration to the upper computer 7, comparing the smoke concentration with an alarm value by the upper computer 7, and controlling to start a water sprinkling device to perform water sprinkling and cooling and triggering an early warning device 9 to warn when the smoke concentration is greater than the alarm value;
s303, the smoke detection component 15 continuously detects the smoke concentration in the transportation unit, when the smoke concentration is reduced to a safe value, the sprinkler is controlled to be closed, and when the smoke concentration is continuously increased, the display device 8 displays a smoke failure, and the transportation unit is controlled to stop running.
In some embodiments, the determination of the slip fault includes:
s401, setting a rated speed;
s402, detecting the running speed of the conveying belt 1 by using the speed detection assembly 17, and transmitting the detected running speed to the upper computer 7, wherein the upper computer 7 judges according to the running speed;
s403, when the running speed is lower than 75% of the rated speed, the display device 8 displays a slipping fault and triggers the early warning device 9 to give an alarm, and when the running speed is lower than 30% of the rated speed, the display device 8 displays a belt breakage fault and triggers the early warning device 9 to give an alarm to control the transportation unit to stop running;
s404, when the running speed exceeds 115% of the rated speed, the display device 8 displays "overspeed fault" and triggers the warning device 9 to issue an alarm.
In some embodiments, the analysis and judgment further comprises fire fault judgment, and specific embodiments thereof are as follows:
s501, presetting a temperature safety value and a temperature threshold value, wherein the alarm value is 0.1mg/m 3 ；
S502, temperature information in the transportation unit is detected by utilizing the temperature detection assembly 16 and is transmitted to the upper computer 7, the upper computer 7 compares the temperature information with a temperature threshold, and when the temperature information is greater than the temperature threshold, the sprinkler is controlled to be started for sprinkling and cooling, and the early warning device 9 is triggered for warning;
S503, the temperature detection component 16 continuously detects a temperature signal in the transportation unit, and when the temperature is reduced to a temperature safety value, the sprinkler is controlled to be closed; when the temperature smoke concentration continues to rise, the display device 8 displays a fire fault, and the transportation unit is controlled to stop running.
The applicant declares that the above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be apparent to those skilled in the art that any changes or substitutions that are easily conceivable within the technical scope of the present invention disclosed by the present invention fall within the scope of the present invention and the disclosure.

Claims (10)

1. The raw coal transportation multi-stage protection system is characterized by comprising a transportation unit, a detection unit and a control unit, wherein the transportation unit comprises a conveying belt, and the conveying belt is used for transporting materials;
the detection unit comprises a coal pile identification module and a tearing identification module, wherein the coal pile identification module comprises a first image acquisition component and a first laser detection component which are arranged above the conveying belt, the first laser detection component is used for transmitting laser to materials on the conveying belt, the first image acquisition component is used for acquiring image information within a laser range emitted by the first laser detection component, the tearing identification module comprises a second image acquisition component, a second laser detection component and a belt speed detection component which are arranged below the conveying belt, the second laser detection component is used for transmitting laser to the conveying belt, the second image acquisition component is used for acquiring image information within the laser range emitted by the second laser detection component, and the belt speed detection component is used for detecting the moving speed of the conveying belt;
The control unit comprises an upper computer, a display device and an early warning device, wherein the upper computer is electrically connected with the detection unit and the transportation unit respectively and is used for processing analysis data information, the upper computer is also electrically connected with the display device and the early warning device respectively and is used for displaying the data information and the analysis result of the detection unit, and the early warning device is used for giving an alarm.
2. The raw coal transportation multi-stage protection system of claim 1, wherein the transportation unit further comprises a power module for driving the conveyor belt to move;
the power module comprises a driving roller, a speed reducing device and a motor device, wherein the conveying belt is wound on the driving roller, two ends of the speed reducing device are respectively connected with the driving roller and the motor device and used for driving the conveying belt to move, and bearing seats are independently arranged on the driving roller, the speed reducing device and the motor device;
the detection unit further comprises a power detection module, the power detection module comprises an information conditioning device and a plurality of vibration sensing assemblies, the information conditioning device is electrically connected with the power detection module, the plurality of vibration sensing assemblies are independently arranged on bearing seats of the driving roller, the speed reduction device and the motor device, the vibration sensing assemblies are used for detecting vibration states of the bearing seats, the information conditioning device is also electrically connected with the upper computer, and the information conditioning device is used for integrating vibration state information;
Preferably, the power module further comprises a plurality of pull switches, and the plurality of pull switches are uniformly distributed on two sides of the conveying belt;
preferably, the power detection module further comprises a plurality of first sound detection assemblies, and the first sound detection assemblies are used for collecting sound signals in the running process of the bearing seat and transmitting the sound signals to the control unit.
3. The raw coal transportation multistage protection system of claim 1 or 2, wherein the detection unit further comprises a multi-parameter detection module comprising a smoke detection assembly, a temperature detection assembly, and a speed detection assembly;
the smoke detection assembly is used for detecting the smoke concentration in the transportation unit; the temperature detection component is used for detecting temperature information of the transportation unit; the speed detection assembly is used for detecting the running speed of the conveying belt;
preferably, a sprinkler is further arranged in the transportation unit, the sprinkler is provided with an electromagnetic switch valve, and the electromagnetic switch valve is electrically connected with the control unit so as to control the sprinkler to be automatically opened, and the sprinkler is used for sprinkling water and cooling;
Preferably, the temperature detection assembly is arranged on a driving roller of the power module and is used for measuring the temperature of the driving roller;
preferably, the speed detection assembly is arranged on the surface of the conveying belt or on a driving roller of the power module.
4. A raw coal transportation multistage protection system according to any one of claims 1-3, wherein the transportation unit further comprises a plurality of support rollers, the plurality of support rollers being evenly distributed along the length direction of the conveyor belt, the support rollers being for supporting the conveyor belt;
the support carrier roller comprises a first roller column, a second roller column and a third roller column, wherein the first roller column and the second roller column are respectively positioned at two sides of the conveying belt and independently extend out of the conveying belt, and two ends of the third roller column are respectively abutted to the first roller column and the second roller column.
5. The raw coal transportation multistage protection system according to claim 4, wherein the detection unit further comprises a deviation recognition module, the deviation recognition module is electrically connected with the control unit, and the deviation recognition module is used for detecting whether the conveying belt is deviated;
Preferably, the off-tracking recognition module comprises a plurality of off-tracking image recognition components, the off-tracking image recognition components are uniformly distributed along the length direction of the conveying belt, the off-tracking image recognition components are suspended above the conveying belt, and the off-tracking image recognition components are correspondingly arranged with the supporting carrier rollers and are used for recognizing the supporting carrier rollers;
preferably, the deviation identifying module further comprises a plurality of deviation rectifying components uniformly distributed along the length direction of the conveying belt, the deviation rectifying components comprise a first swinging probe rod and a second swinging probe rod, the first swinging probe rod and the second swinging probe rod are respectively located at two sides of the conveying belt, the first swinging probe rod and the second swinging probe rod are respectively connected with the supporting carrier roller in a rotating mode, and the first swinging probe rod and the second swinging probe rod are independently electrically connected with the upper computer.
6. The raw coal transportation multistage protection system of claim 4 or 5, wherein the detection unit further comprises a plurality of second sound detection components, the second sound detection components are electrically connected with the control unit, and the second sound detection components are used for collecting sound signals in the operation process of the supporting idler and transmitting the sound signals to the control unit.
7. The raw coal transportation multistage protection system of any one of claims 1-6, wherein the coal pile identification module and tear identification module are disposed proximate to a blanking point of the conveyor belt;
preferably, the coal pile identification module and the tearing identification module further comprise a first self-cleaning component and a second self-cleaning component respectively and independently, wherein the first self-cleaning component is used for cleaning the first image acquisition component and the first laser detection component, and the second self-cleaning component is used for cleaning the second image acquisition component and the second laser detection component;
preferably, the first image acquisition assembly and the first laser detection assembly are independently hung above the conveying belt;
preferably, the second image acquisition assembly and the second laser detection assembly are respectively fixed below the conveying belt through a first bracket and a second bracket;
preferably, the distance between the second image acquisition component and the conveying belt is more than or equal to 500mm;
preferably, the angle of the second laser detection component for emitting laser is 45-90 degrees.
8. A raw coal transportation multistage protection method, characterized in that the raw coal transportation multistage protection method adopts the raw coal transportation multistage protection system according to any one of claims 1 to 7, and the raw coal transportation multistage protection method comprises:
Acquiring image information in the running process of a conveying belt to generate running state information;
analyzing and judging whether the transportation unit is in a fault state according to the running state information;
based on the analysis and judgment result, the early warning device is controlled to give an alarm, and the transportation unit is controlled to stop running.
9. The method for multi-stage protection of raw coal transportation according to claim 8, wherein the analyzing and judging includes:
judging whether the material on the conveying belt has a coal stacking fault, judging whether the conveying belt has a longitudinal tearing fault, judging whether the power module has abnormal operation, judging whether the conveying belt has a deviation fault, judging whether the conveying belt has a smoke generating fault, and judging whether the conveying belt has a slipping fault.
10. The raw coal transportation multistage protection method according to claim 9, wherein the determination of the coal stacking fault comprises:
s101, setting a height threshold;
s102, emitting laser to materials on a conveying belt by using a first laser detection assembly, collecting image information in a laser range by using a first image acquisition assembly, and transmitting the image information to an upper computer for edge analysis and calculation so as to obtain the height profile of the materials;
S103, comparing the height profile with a height threshold, and controlling the early warning device to give an alarm and displaying a 'coal pile fault' on the display device when the height profile is larger than or equal to the height threshold;
preferably, the judging of the longitudinal tear fault includes:
s201, setting a length threshold;
s202, emitting laser to the lower surface of the conveying belt by using a second laser detection assembly, collecting image information in a laser range by using a second image acquisition assembly, transmitting the image information to an upper computer, and identifying whether a crack occurs by performing edge detection by the upper computer based on a triangular ranging method;
s203, calculating a tearing length according to the moving speed of the conveying belt acquired by the belt speed detection assembly, comparing the tearing length with a length threshold, displaying a longitudinal tearing fault on a display device when the tearing length is greater than the length threshold, triggering an early warning device to give an alarm, and controlling a conveying unit to stop running in a feedback manner;
preferably, the judging of the abnormal operation includes:
the vibration sensing assembly is adopted to respectively collect vibration signals of the bearing seat of the driving roller, the bearing seat of the speed reducing device and the bearing seat of the motor device, and the vibration signals are independently transmitted to the information conditioning device, the information conditioning device converts and amplifies the received vibration signals and transmits the vibration signals to the upper computer, the upper computer analyzes and processes the vibration signals, and controls the display device to display abnormal operation according to analysis results, and the early warning device is controlled to give an alarm;
Preferably, the determining of the deviation fault includes:
the method comprises the steps that image information of a supporting idler is collected by using a deviation image recognition component, the number of rollers exposed in the image information is recognized, when the number of rollers is fixed, the conveying belt is not deviated, when the number of rollers is reduced, the conveying belt is deviated, a recognition result is fed back to a host computer, the host computer determines the position of the deviation image recognition component, an early warning device is controlled to give an alarm, and a deviation fault is displayed on a display device;
preferably, the judging of the smoking failure includes:
s301, presetting a safety value and an alarm value;
s302, detecting the smoke concentration in the transportation unit by using a smoke detection assembly, transmitting the smoke concentration to an upper computer, and controlling a sprinkler to be started for sprinkling and cooling and triggering an early warning device to warn when the smoke concentration is larger than an alarm value by the upper computer;
s303, the smoke detection component continuously detects the smoke concentration in the transportation unit, when the smoke concentration is reduced to a safe value, the sprinkler is controlled to be closed, and when the smoke concentration is continuously increased, the display device displays 'smoke failure', and the transportation unit is controlled to stop running;
Preferably, the alarm value is 0.1mg/m 3 ；
Preferably, the judging of the slip fault includes:
s401, setting a rated speed;
s402, detecting the running speed of the conveying belt by using a speed detection assembly, and transmitting the running speed to an upper computer, wherein the upper computer judges according to the running speed;
s403, when the running speed is lower than 75% of the rated speed, the display device displays a slipping fault and triggers the early warning device to give an alarm, and when the running speed is lower than 30% of the rated speed, the display device displays a belt breakage fault and triggers the early warning device to give an alarm to control the transportation unit to stop running;
s404, when the running speed exceeds 115% of the rated speed, the display device displays overspeed fault and triggers the early warning device to give an alarm.
CN202310563106.1A 2023-05-18 2023-05-18 Raw coal transportation multistage protection system and method Pending CN116534530A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117228262A (en) * 2023-11-16 2023-12-15 徐州众图智控通信科技有限公司 Coal mine conveyor belt longitudinal tearing detection system and method based on laser detection
CN117886081A (en) * 2024-03-14 2024-04-16 山西森尔科技有限公司 Belt conveyor fault monitoring method and device, electronic equipment and medium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117228262A (en) * 2023-11-16 2023-12-15 徐州众图智控通信科技有限公司 Coal mine conveyor belt longitudinal tearing detection system and method based on laser detection
CN117228262B (en) * 2023-11-16 2024-03-08 徐州众图智控通信科技有限公司 Coal mine conveyor belt longitudinal tearing detection system and method based on laser detection
CN117886081A (en) * 2024-03-14 2024-04-16 山西森尔科技有限公司 Belt conveyor fault monitoring method and device, electronic equipment and medium

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