CN106241270A - A kind of belt conveying machine monitoring and life span management system - Google Patents

A kind of belt conveying machine monitoring and life span management system Download PDF

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Publication number
CN106241270A
CN106241270A CN201610715183.4A CN201610715183A CN106241270A CN 106241270 A CN106241270 A CN 106241270A CN 201610715183 A CN201610715183 A CN 201610715183A CN 106241270 A CN106241270 A CN 106241270A
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CN
China
Prior art keywords
sensor
motor
gear
box
ribbon conveyer
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
CN201610715183.4A
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Chinese (zh)
Inventor
宋建成
李宏伟
李璐
武斌
曲兵妮
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Taiyuan University of Technology
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Taiyuan University of Technology
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 Taiyuan University of Technology filed Critical Taiyuan University of Technology
Priority to CN201610715183.4A priority Critical patent/CN106241270A/en
Publication of CN106241270A publication Critical patent/CN106241270A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G43/00Control devices, e.g. for safety, warning or fault-correcting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G43/00Control devices, e.g. for safety, warning or fault-correcting
    • B65G43/02Control 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G43/00Control devices, e.g. for safety, warning or fault-correcting
    • B65G43/04Control devices, e.g. for safety, warning or fault-correcting detecting slip between driving element and load-carrier, e.g. for interrupting the drive
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G43/00Control devices, e.g. for safety, warning or fault-correcting
    • B65G43/06Control devices, e.g. for safety, warning or fault-correcting interrupting the drive in case of driving element breakage; Braking or stopping loose load-carriers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2203/00Indexing code relating to control or detection of the articles or the load carriers during conveying
    • B65G2203/02Control or detection
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2203/00Indexing code relating to control or detection of the articles or the load carriers during conveying
    • B65G2203/02Control or detection
    • B65G2203/0266Control or detection relating to the load carrier(s)
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2203/00Indexing code relating to control or detection of the articles or the load carriers during conveying
    • B65G2203/02Control or detection
    • B65G2203/0266Control or detection relating to the load carrier(s)
    • B65G2203/0275Damage on the load carrier
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2203/00Indexing code relating to control or detection of the articles or the load carriers during conveying
    • B65G2203/04Detection means
    • B65G2203/042Sensors

Abstract

A kind of belt conveying machine monitoring and life span management system are to be carried out communication by the master controller being positioned at belt conveyer head with the multiple IOCs being positioned at ribbon conveyer each node along the line, the IOC sideslip to ribbon conveyer, overtemperature, smog, coal piling, tear, the fault-signal skidded and motor, gear-box and the temperature signal of cylinder, adhesive tape running speed signal, the vibration signal of motor current signal and motor and gear-box is acquired, the information collected is analyzed by master controller by man machine interface based on VB, calculate and process, realize ribbon conveyer overall monitor in running and motor, gear-box, cylinder, the life-span management of carrying roller parts.The present invention monitors the running status of ribbon conveyer in real time, and corresponding control signal can be exported according to monitoring information and the life-span of motor, gear-box, cylinder and carrying roller is managed, improve safety, stability and seriality that ribbon conveyer runs.

Description

A kind of belt conveying machine monitoring and life span management system
Technical field
The present invention relates to a kind of Belt Conveyors Underground Coal Mine monitoring system, especially one utilizes master controller with multiple IOC carries out communication, it is achieved ribbon conveyer running carries out the system of overall monitor and life-span management.
Background technology
Along with constantly expanding of colliery scale and improving constantly of production facility of coalmine automaticity, rubber conveyer is also Towards large conveying quantity, high belt speed, the trend development of distance, its transport task undertaken is more and more great, and its functional reliability is straight Connect and affect coal production seriality, safety and economic benefit.
At present, domestic most mine the management of ribbon conveyer is only limitted to sideslip, tear, skid, overtemperature, smog, The protection of the most common failures such as coal piling, it is impossible to realize the complete perception to ribbon conveyer work information and motor, gear-box, rolling Cylinder, the life-span management of each parts of carrying roller.Existing colliery uses more belt conveyor monitoring system, as Bake group of Germany is raw The KJ50 type PROMOS monitoring system, the KHP157 ribbon conveyer of Changzhou Lianli Automation Technology Co., Ltd.'s production that produce are protected Devices etc., also have existing disclosed technology, such as the patent of invention of " a kind of mine explosion-suppression and intrinsic safety type protector for belt conveyer " The utility model patent of " a kind of mine belt conveyor intelligent monitoring and controlling device ", the subject matter all existed is: can only realize To the monitoring of the work informations such as ribbon conveyer operating current, ambient temperature, the speed of service and sideslip, tear, coal piling, overtemperature, The protection of the faults such as smog, status monitoring information amount is few, it is impossible to meet ribbon conveyer motor, gear-box, cylinder, carrying roller each The demand of component life management, and fault and maintenance alarm can only be sent after fault occurs, belong to correction maintenance, it is impossible to realize The State Maintenance of each parts of motor, gear-box, cylinder, carrying roller.
Summary of the invention
It is an object of the invention to provide a kind of belt conveying machine monitoring and life span management system, comprehensive to ribbon conveyer While monitoring, it is achieved to the motor of ribbon conveyer, gear-box, cylinder, the life-span management of each parts of carrying roller, to guarantee The safety of Coal mine transportation system operation and seriality.
To achieve these goals, the technical solution used in the present invention is as follows.
A kind of belt conveying machine monitoring and life span management system, including master controller and multiple IOC;Its It is characterised by:
Described master controller is in belt conveyer head, by CAN be positioned at ribbon conveyer each node along the line The plurality of IOC that the detection sensor arranged connects communicates, and IOC is to belt conveying The sideslip of machine, overtemperature, smog, coal piling, tear, the fault-signal that skids and the temperature signal of motor, gear-box and cylinder, glue The vibration signal of tape running speed signal, motor current signal, motor and gear-box, carrying roller velocity information along the line and along thread environment Temperature information is acquired, and the information collected is analyzed, calculates and locates by man machine interface based on VB by master controller Reason, it is achieved to ribbon conveyer overall monitor in running and motor, gear-box, cylinder, the life-span of carrying roller parts Management.
In technique scheme, described detection sensor include temperature sensor, Smoke Sensor, misalignment sensor, Heap coal sensor, tear sensor, velocity sensor, current sensor, vibrating sensor and tension pick-up.
In technique scheme, described temperature sensor is arranged on driving cylinder support axle, motor and the shell of gear-box Body;At the lower air port that described Smoke Sensor is arranged on above driving drum of belt conveyor in 5 meters, setting height(from bottom) close proximity to The material being positioned on adhesive tape;Described misalignment sensor is arranged on the adhesive tape both sides of belt conveyer head, middle part, afterbody;Described Heap coal sensor is arranged on milling coal hole and adhesive tape lap-joint;Described tear sensor is arranged on unloading of ribbon conveyer traffic direction Material mouth;Described velocity sensor be arranged on below carrying idler with lower adhesive tape above, be rolling friction type contact;Described electric current Sensor is arranged on motor power bus-bar frame;Described vibrating sensor is arranged on the housing of motor and gear-box, vertical and water Flat each installation one;Described tension pick-up is fixedly mounted on one end of the steel wire rope of conveyer and tensioning dolly.
In technique scheme, described life-span management be described master controller by read stored motor oscillating, Gear-box vibration, bowl temperature and the historical data of carrying roller speed, extract the eigenvalue of historical data, i.e. maximum, minima, Absolute average, peak-to-peak value, root-mean-square, meansigma methods, standard deviation, kurtosis, variance, eigenvalue and each parts full longevity that will extract Life periodic samples data do similarity analysis, find the data slot of similarity maximum position in sample data in sample data Put, be now service life state residing for ribbon conveyer motor, gear-box, cylinder, carrying roller all parts.
Further, described service life state is Pyatyi: one-level is that operating mode is good, it is not necessary to maintenance;Two grades is that operating mode is normal, Suggestion is periodically patrolled and examined;Three grades, for there is fatigue loss, wear and tear bigger, it is proposed that periodically carry out key position and patrol and examine;Level Four is More serious fatigue loss, it may appear that fault, it is proposed that stop ribbon conveyer and run, carry out key position maintenance;Pyatyi is serious Fatigue loss, will break down, it is proposed that stops ribbon conveyer immediately and runs, keeps in repair and change.
Realize a kind of belt conveying machine monitoring and life span management system that the invention described above is provided, with prior art phase Ratio, the present invention not only achieves the overall monitor of ribbon conveyer, and can to the motor of ribbon conveyer, gear-box, cylinder, The each component life of carrying roller carries out good management, it is achieved the State Maintenance of each parts.Specifically, the present invention has following spy Point.
Multiple IOCs that the present invention is along the line by being arranged at whole ribbon conveyer, it is achieved that belt conveying The complete perception of machine work information.
The information collected is analyzed, calculates, processes and shows by master controller of the present invention, it is achieved that ribbon conveyer Overall monitor and motor, gear-box, cylinder, the life-span management of each parts of carrying roller.
The present invention solve existing monitoring system cannot realize motor, gear-box, cylinder, carrying roller each component life management Problem, it is possible to monitor the running status of ribbon conveyer in real time, finds the fault of Operation of Belt Conveyor in time, and output is corresponding Protection control signal, and motor, gear-box, cylinder, the life-span management of each parts of carrying roller can be carried out according to the information of monitoring, real The State Maintenance of the most each parts, improves safety, stability and seriality that ribbon conveyer runs.
Accompanying drawing explanation
Fig. 1 is the frame structure schematic diagram of the present invention.
Fig. 2 is the life-span management flow chart of the present invention.
Detailed description of the invention
For the ease of understanding objects and advantages of the present invention, below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is made Further instruction.
As shown in Figure 1, above-mentioned the provided a kind of belt conveying machine monitoring of the present invention and life span management system are provided, are On the basis of existing technology, for the ribbon conveyer of underground coal mine, it is achieved the monitoring designed by automated mining and life-span Management system, this belt conveying machine monitoring and life span management system mainly include master controller and multiple IOC, This master controller is to realize the overall monitor to ribbon conveyer and motor, gear by the plurality of IOC The life-span management of each parts of case, cylinder, carrying roller.
In above-mentioned specific embodiments, described master controller is to be controlled with the plurality of input and output by CAN Device communicates, and is located at belt conveyer head, by man machine interface based on VB, the information collected is received, is deposited Storage, display and Intelligent treatment, manage information by condition monitoring and each component life and show in LCDs.System people Machine interface includes that 5 option windows, respectively master control window, life-span management, wiring chart, failure logging and parameter are arranged, main Control window includes system running state, sensor data acquisition, motor operating state, abort situation, communication errors present The functions such as display, mainly show the predicting residual useful life of each parts of motor, gear-box, cylinder, carrying roller in life-span management window Result and keep in repair suggestion accordingly, shows IOC input/output port connection in wiring files window, defeated Incoming interface connects sideslip, tear, temperature, smog, coal piling, speed, electric current, tension force and vibrating sensor, and output interface connects electricity Machine and watering calutron remote switch, the time, fault type and the fault that have recorded fault generation in failure logging window are sent out Raw position, includes bowl temperature overtemperature alarm setting value, belt tension setting value and belt band in parameter setting window Speed setting value.
In above-mentioned specific embodiments, multiple IOCs are by CAN intercommunication, are located at belt On conveyer each node along the line, arrange one every 300 meters, be by micro controller unit, CAN communication unit, data acquisition Unit and relay output unit are integrated;IOC micro controller unit selects the STM32F107VCT6 of ST company, By data acquisition unit gather the sideslip of ribbon conveyer, tear, high temperature, smog, coal piling, exceed the speed limit, the fault-signal such as skidding, Motor temperature signal, gearbox temperature signal, bowl temperature signal, adhesive tape running speed signal, motor current signal, motor and The vibration signal of gear-box, carrying roller velocity information along the line and ambient temperature information along the line, by Control motor and watering The start and stop of calutron, and by CAN, above-mentioned signal is transferred to master controller and processes.
In above-mentioned specific embodiments, detection sensor is to include temperature sensor, Smoke Sensor, sideslip sensing Device, heap coal sensor, tear sensor, velocity sensor, current sensor, vibrating sensor and tension pick-up.Temperature passes Sensor uses KGW200H, is arranged on driving cylinder support axle, motor and the housing of gear-box;Smoke Sensor uses GQL0.1, At the lower air port being arranged on above driving drum of belt conveyor in 5 meters, setting height(from bottom) is close proximity to the material being positioned on adhesive tape; Misalignment sensor uses GEJ30, and including two-stage sideslip, during one-level sideslip, system alarm is pointed out, during two grades of sideslips, and system alarm Shut down, be arranged on the adhesive tape both sides of belt conveyer head, middle part, afterbody;Heap coal sensor uses GUJ30, is arranged on and slips coal Eye and adhesive tape lap-joint;Tear sensor uses GVD1200, is arranged on the discharge port of ribbon conveyer traffic direction;Speed passes Sensor use GSC-200/1000, be arranged on below carrying idler with lower adhesive tape above, be rolling friction type contact;Electric current passes Sensor uses WB1414S43, is arranged on motor power bus-bar frame, is used for detecting motor stator electric current;Vibrating sensor uses LC0159-1000, is arranged on the housing of motor and gear-box, and vertical and horizontal respectively installs one;Tension pick-up uses GAD100, is fixedly mounted on one end of the steel wire rope of conveyer and tensioning dolly, is used for detecting conveyor belt tension, prevents conveyor belt tension Too small, adhesive tape slipping, overtension, adhesive tape breaking.
In above-mentioned specific embodiments, power supply is mine flameproof and intrinsic safety type power supply, export 1 group of DC 5V, 1 group DC 12V, 1 group of DC 18V, DC 5V and DC 12V are for powering to controller, and DC 18V is for supplying to IOC Electricity.
As shown in Figure 2, in above-mentioned specific embodiments, described life-span management is that described master controller is by having read The vibration of the motor oscillating of storage, gear-box, bowl temperature and the historical data of carrying roller speed, extract the eigenvalue of historical data, I.e. maximum, minima, absolute average, peak-to-peak value, root-mean-square, meansigma methods, standard deviation, kurtosis, variance, the spy that will extract Value indicative and each parts life cycle management sample data do similarity analysis, find the data slot that in sample data, similarity is maximum Position in sample data, is now life-span shape residing for ribbon conveyer motor, gear-box, cylinder, carrying roller all parts State.
In above-mentioned specific embodiments, service life state is divided into 5 grades: 1) operating mode is good, it is not necessary to maintenance;2) operating mode is just Often, it is proposed that periodically patrol and examine;3) fatigue loss occurs, wear and tear bigger, it is proposed that periodically carry out key position and patrol and examine;4) occur relatively Major fatigue is lost, in fact it could happen that fault, it is proposed that stops ribbon conveyer and runs, carries out key position maintenance;5) appearance is the tightest Heavily fatigue loss, will break down, it is proposed that stops ribbon conveyer immediately and runs, keeps in repair and change.
In above-mentioned specific embodiments, it is achieved a kind of belt conveying machine monitoring and the specific works side of life span management system Case comprises the following steps.
1) after powering on, first system initializes, and prepares the work such as man machine interface shows, then carries out sensor states Self-inspection.
2), after obtaining allowing enabling signal, IOC starts to gather the Monitoring Data of each sensor output, right Data carry out changing, Filtering Processing, and Monitoring Data information and positional information are packed is transferred to master controller through CAN, Master controller carries out real-time storage to data, and is analyzed judging, then determines whether to control to drive list according to judged result Metaaction.
3) clicking on life-span management button, system carries out life-span management, by the longevity to motor, gear-box, cylinder, each parts of carrying roller Life predicts the outcome and shows at man machine interface " life-span management " window, and gives the maintenance suggestion of each parts, maintainer Service life state according to current each parts is safeguarded.
The foregoing is only presently preferred embodiments of the present invention, be not limitation of the invention, relate in this manual Should understand according to the common knowledge of this area and usual technological means to other technology contents and technical term and implement, Also enforcement can be set by rational analysis ratiocination.

Claims (5)

1. belt conveying machine monitoring and a life span management system, including master controller and multiple IOC;It is special Levy and be: described master controller is in belt conveyer head, by CAN be positioned at ribbon conveyer along the line each The plurality of IOC that the detection sensor that node is arranged connects communicates, and IOC is to belt The sideslip of conveyer, overtemperature, smog, coal piling, tear, the fault-signal that skids and the temperature letter of motor, gear-box and cylinder Number, adhesive tape running speed signal, motor current signal, motor and the vibration signal of gear-box, carrying roller velocity information along the line and edge Thread environment temperature information is acquired, and the information collected is analyzed, counts by man machine interface based on VB by master controller Calculate and process, it is achieved to ribbon conveyer overall monitor in running and motor, gear-box, cylinder, carrying roller parts Life-span management.
Belt conveying machine monitoring the most according to claim 1 and life span management system, it is characterised in that: described detection sensing Device includes temperature sensor, Smoke Sensor, misalignment sensor, heap coal sensor, tear sensor, velocity sensor, electric current Sensor, vibrating sensor and tension pick-up.
Belt conveying machine monitoring the most according to claim 2 and life span management system, it is characterised in that: described temperature sensing Device is arranged on driving cylinder support axle, motor and the housing of gear-box;Described Smoke Sensor is arranged on ribbon conveyer and drives Above cylinder at the lower air port in 5 meters, setting height(from bottom) is close proximity to the material being positioned on adhesive tape;Described misalignment sensor is arranged on Belt conveyer head, middle part, the adhesive tape both sides of afterbody;Described heap coal sensor is arranged on milling coal hole and adhesive tape lap-joint;Institute State tear sensor and be arranged on the discharge port of ribbon conveyer traffic direction;Described velocity sensor is arranged on below carrying idler Above lower adhesive tape, it is rolling friction type contact;Described current sensor is arranged on motor power bus-bar frame;Described vibration Sensor is arranged on the housing of motor and gear-box, and vertical and horizontal respectively installs one;Described tension pick-up is fixedly mounted on One end of the steel wire rope of conveyer and tensioning dolly.
Belt conveying machine monitoring the most according to claim 1 and life span management system, it is characterised in that: described life-span management It is that described master controller is by reading motor oscillating, gear-box vibration, bowl temperature and the history number of carrying roller speed stored According to, extract the eigenvalue of historical data, i.e. maximum, minima, absolute average, peak-to-peak value, root-mean-square, meansigma methods, standard Difference, kurtosis, variance, do similarity analysis by the eigenvalue extracted and each parts life cycle management sample data, find sample The data slot that in data, similarity is maximum position in sample data, is now ribbon conveyer motor, gear-box, rolling Service life state residing for cylinder, carrying roller all parts.
Belt conveying machine monitoring the most according to claim 4 and life span management system, it is characterised in that: described service life state It it is Pyatyi: one-level is that operating mode is good, it is not necessary to maintenance;Two grades is that operating mode is normal, it is proposed that periodically patrol and examine;Three grades tired for occurring Strain consumption, weares and teares bigger, it is proposed that periodically carry out key position and patrol and examine;Level Four is more serious fatigue loss, it may appear that fault, it is proposed that Stop ribbon conveyer running, carry out key position maintenance;Pyatyi is major fatigue loss, will break down, it is proposed that immediately Stop ribbon conveyer running, keep in repair and change.
CN201610715183.4A 2016-08-25 2016-08-25 A kind of belt conveying machine monitoring and life span management system Pending CN106241270A (en)

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Application Number Priority Date Filing Date Title
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Cited By (6)

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Publication number Priority date Publication date Assignee Title
CN108001997A (en) * 2017-12-11 2018-05-08 上海信耀电子有限公司 A kind of drum conveying line based on bus marco
CN110864776A (en) * 2019-11-22 2020-03-06 常州机电职业技术学院 Weighing equipment predictive maintenance algorithm and weighing equipment predictive maintenance method
CN110887944A (en) * 2019-12-02 2020-03-17 长江师范学院 Tea-seed oil quality short-term test device
CN111453340A (en) * 2020-04-24 2020-07-28 安徽海螺建材设计研究院有限责任公司 Control method and system of high-power rubber belt conveyor
CN111891683A (en) * 2020-07-15 2020-11-06 太原理工大学 Detection apparatus for belt conveyor bearing roller state parameter
CN110864775B (en) * 2019-11-22 2021-05-07 常州机电职业技术学院 Predictive maintenance system for weighing equipment of automatic belt scale

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108001997A (en) * 2017-12-11 2018-05-08 上海信耀电子有限公司 A kind of drum conveying line based on bus marco
CN110864776A (en) * 2019-11-22 2020-03-06 常州机电职业技术学院 Weighing equipment predictive maintenance algorithm and weighing equipment predictive maintenance method
CN110864775B (en) * 2019-11-22 2021-05-07 常州机电职业技术学院 Predictive maintenance system for weighing equipment of automatic belt scale
CN110864776B (en) * 2019-11-22 2021-08-20 常州机电职业技术学院 Weighing equipment predictive maintenance algorithm and weighing equipment predictive maintenance method
CN110887944A (en) * 2019-12-02 2020-03-17 长江师范学院 Tea-seed oil quality short-term test device
CN111453340A (en) * 2020-04-24 2020-07-28 安徽海螺建材设计研究院有限责任公司 Control method and system of high-power rubber belt conveyor
CN111891683A (en) * 2020-07-15 2020-11-06 太原理工大学 Detection apparatus for belt conveyor bearing roller state parameter

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