CN116198945A - Deviation monitoring and correcting device and method for belt conveyor - Google Patents
Deviation monitoring and correcting device and method for belt conveyor Download PDFInfo
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- CN116198945A CN116198945A CN202310397665.XA CN202310397665A CN116198945A CN 116198945 A CN116198945 A CN 116198945A CN 202310397665 A CN202310397665 A CN 202310397665A CN 116198945 A CN116198945 A CN 116198945A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/02—Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load carriers, e.g. for interrupting the drive in the event of overheating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors
- B65G39/10—Arrangements of rollers
- B65G39/12—Arrangements of rollers mounted on framework
- B65G39/16—Arrangements of rollers mounted on framework for aligning belts or chains
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- 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)
- B65G2203/0283—Position of the load carrier
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Conveyors (AREA)
Abstract
The invention discloses a deviation monitoring and correcting device and a deviation correcting method for a belt conveyor, which are characterized in that rotation sensors are respectively arranged on left and right rollers, so that the rotation states of the left and right rollers can be accurately perceived, when a belt is in normal transmission, the left and right clutches are in a separated state, the belt can drive the left and right rollers to synchronously rotate, a computer receives data fed back by the left and right rotation sensors in real time, the rotation speed and the rotation angle of the left and right rollers are obtained, whether the deviation is judged according to whether the absolute value of the difference value of the rotation speed and the rotation angle is larger than a threshold value, if the deviation is judged, a left and right adjusting motor is started and the left and right clutches are in a combined state, at the moment, the adhesive force trend between the left and right rollers and the belt is controlled by changing the rotation speeds of the left and right rollers and the belt, so that the belt is corrected, the whole deviation correcting process does not need to be stopped and adjusted, and manual operation is not needed, and automatic deviation monitoring and correcting can be realized.
Description
Technical Field
The invention relates to a deviation monitoring and correcting device and method for a belt conveyor, and belongs to the technical field of belt conveyor transmission.
Background
Belt conveyors are the machines that are used in most industrial enterprises, but in use various conditions such as run-out, longitudinal tear and edge wear occur, with run-out being the most common problem. Because the idler bracket is not right, or the tightness of the two ends of the bend pulley/the transmission pulley is not consistent, or the tensioning device is not adjusted, the deviation can be caused. When the deviation problem occurs, the production efficiency can be influenced, and the personal safety can be seriously influenced, so that the deviation of the belt conveyor is required to be controlled, or the deviation correcting technology can be timely carried out when the deviation occurs to the belt.
The deviation is corrected by adopting the following method in the current industry: firstly, correcting deviation by adopting a method of adjusting a bearing roller set, and enabling a conveying belt to deviate to one side in the conveying process, and manually moving the side of the bearing roller set forward towards the advancing direction of the conveying belt after stopping; secondly, a special aligning carrier roller set is arranged, so that the carrier roller set can rotate in a certain direction in a horizontal plane, and when the belt is deviated, transverse thrust is blocked or generated, so that deviation correction of the belt is realized; still other are correction by adjusting the position of each roller after shutdown or by adjusting the tension of the tensioner; the above methods can realize deviation correction to a certain extent, but the above methods have the following disadvantages: 1. at present, the deviation monitoring of the belt conveyor still depends on manual observation, and if deviation is not found in time and deviation correction is carried out, the edge of the belt is worn or materials are scattered; 2. the existing deviation correcting mode has higher requirements on the installation precision, processing and manufacturing of a carrier roller set, a roller, a frame and the like, and increases the manufacturing cost; 3. the existing deviation rectifying modes all need to rectify the deviation after the belt conveyor is stopped, and some adjusting methods need to be manually adjusted, so that time and labor are wasted, and the working efficiency of the belt conveyor can be influenced.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the deviation monitoring and correcting device and the deviation correcting method for the belt conveyor, which can continuously monitor the deviation of the belt conveyor, and can automatically correct the deviation of the belt without manual work or stopping of the belt conveyor, thereby effectively ensuring the working efficiency of the belt conveyor.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a deviation monitoring and correcting device of a belt conveyor comprises a left adjusting motor, a left clutch, a left rotary transformer sensor, a left roller, a right adjusting motor, a right clutch, a right rotary transformer sensor, a right roller and a computer;
the left roller and the right roller are coaxially arranged to form a direction-changing roller and are arranged at one end of the belt conveyor, and the left roller and the right roller can rotate along with the belt; a gap is reserved between the close ends of the left roller and the right roller; the left-handed variable sensor and the right-handed variable sensor are respectively arranged on the left roller and the right roller and are used for collecting the rotation state data of the left roller and the right roller, the left adjusting motor and the right adjusting motor are symmetrically arranged on the frames at two sides of the bend roller, the left adjusting motor is coaxially connected with the other end of the left roller through a left clutch, and when the left clutch is in a combined state, the left adjusting motor can drive the left roller to synchronously rotate; the right adjusting motor is coaxially connected with the other end of the right roller through the right clutch, and when the right clutch is in a combined state, the right adjusting motor can drive the right roller to synchronously rotate;
the computer is arranged on the frame and is respectively connected with the left adjusting motor, the left clutch, the left rotary change sensor, the right adjusting motor, the right clutch and the right rotary change sensor, and is used for acquiring and analyzing the rotation state data acquired by the left rotary change sensor and the right rotary change sensor and then respectively controlling the combination or separation state of the left clutch and the right clutch; and simultaneously, the rotating speeds of the left regulating motor and the right regulating motor are respectively controlled.
Further, the left adjusting motor and the right adjusting motor are servo motors. And a servo motor is adopted, so that the rotating speed of the motor is conveniently controlled.
Further, the computer is a PLC controller or a singlechip. The controller is small in size and stable in working.
The working method of the deviation monitoring and correcting device for the belt conveyor comprises the following specific steps:
step one, before the belt conveyor starts to work, setting the initial states of a left clutch and a right clutch to be separation states; then the belt conveyor starts to work, and further the belt transmission enables the left roller and the right roller to rotate along with the belt, and the left-handed variable sensor and the right-handed variable sensor acquire respective rotation state data of the left roller and the right roller respectively according to the acquisition interval and feed the data back to the computer in real time;
step two, after receiving real-time data fed back by a group of left-handed change sensors and a group of right-handed change sensors by a computer, respectively obtaining the rotation angle theta of the left roller after analysis and processing 1 Rotational speed omega 1 Rotation angle theta of right roller 2 At a rotational speed of omega 2 The method comprises the steps of carrying out a first treatment on the surface of the Subtracting the rotation angle and the rotation speed of the left roller from the rotation angle and the rotation speed of the right roller respectively, taking absolute values to obtain a rotation angle difference delta theta and a rotation speed difference delta omega of the left roller and the right roller, and setting a rotation angle threshold value theta 0 And a rotational speed threshold ω 0 If the difference between the rotation angles of the left and right rollers is greater than the set threshold value theta 0 Or the speed difference is greater than a threshold omega 0 When the belt is in the state of deviation, the belt of the belt conveyor is determined to enterStep three, entering; if not, the computer continues to receive the next group of data and repeats the process of the step;
step three, if omega 1 Less than omega 2 Or theta 1 Less than theta 2 If omega, the belt is considered to be deviated to the left 1 Greater than omega 2 Or theta 1 Greater than theta 2 When the belt is considered to deviate rightwards;
step four, when the belt is determined to deviate, the computer controls the left clutch and the right clutch to be in a combined state, and simultaneously controls the left adjusting motor and the right adjusting motor to start, so that the left adjusting motor drives the left roller to synchronously rotate through the left clutch, and the right adjusting motor drives the right roller to synchronously rotate through the right clutch, and the step five is carried out; .
Step five, according to the judgment condition of the step three, when the belt deviates leftwards, the rotating speed of the left regulating motor for driving the left roller is higher than that of the belt, so that the adhesive force between the belt and the left roller is increased, and the left roller applies an upward force to the left side of the belt; meanwhile, the rotating speed of the right regulating motor driving the right roller is smaller than that of the belt driving, so that the adhesive force between the belt and the right roller is increased, the right roller gives a downward force to the right side of the belt, at the moment, the force of the left roller and the right roller gives a clockwise moment to the belt, and finally the belt is driven to shift to right in the transmission process;
when the belt deviates rightwards, the rotating speed of the right regulating motor driving the right roller is higher than that of the belt, so that the adhesive force between the belt and the right roller is increased, and the right roller gives an upward force to the right side of the belt; meanwhile, the rotating speed of the left regulating motor driving the left roller is smaller than that of the belt driving, so that the adhesive force between the belt and the left roller is increased, the left roller gives a downward force to the left side of the belt, at the moment, the left roller and the right roller form a counterclockwise moment to the force of the belt, and finally the belt is driven to deviate to the right in the transmission process;
the specific principle of the correction is as follows: in the normal transmission process of the belt, when the belt drives the left roller and the right roller to rotate, the rotating speed between the belt and the rollers is consistent, the adhesive force is smaller than the situation that the rotating speeds between the left roller and the right roller are inconsistent, the rotating speeds between the left roller and the right roller and the belt are changed, the left roller and the right roller are respectively larger than or smaller than the belt transmission speed, the sliding rate between the left roller and the right roller is adjusted and increased under the condition that the belt transmission speed is kept unchanged, the sliding rate and the adhesive force are positively correlated, the adhesive force between the left roller and the right roller and the belt is increased, the moment in different directions is applied to the belt, and the deviation correcting process of the belt deviation direction is finally realized.
Step six, the belt transmission speed is kept unchanged during the whole deviation correction period, a left-handed change sensor and a right-handed change sensor continuously detect the rotation states of the left roller and the right roller, data are continuously transmitted to a computer, the computer analyzes and processes the data to obtain the real-time rotation speed of the left roller and the right roller and the real-time rotation angle of the left roller, and the obtained real-time rotation speed is used for controlling the rotation speed of a left-right adjusting motor and calculating the rotation angle difference delta theta of the left roller and the right roller; when the rotation angle difference delta theta of the left roller and the right roller is smaller than the set threshold value theta 0 When the belt deviation correcting process is finished, the computer controls the rotation speed of the left and right adjusting motors to be consistent with the rotation speed when the belt is driven, and the belt deviation correcting process is kept for a period of time;
and step eight, after maintaining the synchronous rotating speed for a period of time, the computer controls the left clutch and the right clutch to be in a separated state, then stops the left and right adjusting motors to work, then the computer continuously receives real-time data fed back by the next group of left-handed variable sensors and right-handed variable sensors, and repeats the steps two to eight, so that the processes of monitoring the deviation and correcting the deviation in the working process of the belt conveyor are continuously realized.
Further, the computer is connected with the centralized control center through the cable, when the computer determines that the belt is off tracking, the computer transmits the off tracking signal to the centralized control center, so that the worker can know in time and check the off tracking condition before. Therefore, the influence condition of deviation on transportation can be checked in time, and the belt conveyor can be stopped in time through the centralized control center if an emergency occurs.
Compared with the prior art, the invention adopts the left and right rollers to form the bend roller to replace the original integral roller, combines the left and right adjusting motors, the left and right clutches, the left and right rotation sensors and the computer, can accurately sense the rotation state of the left and right rollers by respectively installing the rotation sensors on the left and right rollers, when the belt is normally transmitted, the left and right clutches are in a separated state, at the moment, the belt can drive the left and right rollers to synchronously rotate to carry out transmission work, the computer receives data fed back by the left and right rotation sensors in real time, the computer obtains the rotation speed and the rotation angle of the left and right rollers through analysis processing, and judges whether the deviation is serious or not according to whether the absolute value of the difference value of the rotation speed and the rotation angle is larger than a threshold value, if the deviation is judged, the computer can rapidly control the starting of the left and right adjusting motors and the rotation speed of the left and right clutches to be in a combined state, at the moment, the adhesive force trend between the left and right rollers and the belt is controlled by changing the rotation speed inconsistency between the left and the belt, the left and right rollers, the correction of the belt is further controlled, the belt is corrected, and the deviation is prevented from further serious deviation. The whole deviation rectifying process does not need to be stopped for adjustment or manual operation, and automatic deviation rectifying monitoring and correcting can be achieved. In addition, the whole device is additionally arranged on the basis of the existing belt conveyor, and only the original bend drum is removed, so that the installation precision and the processing and manufacturing requirements of the original equipment are not required to be improved, and the device is convenient to popularize and use.
Drawings
FIG. 1 is a schematic view of the overall structure of the device of the present invention;
FIG. 2 is an electrical schematic of the various components of the apparatus of the present invention;
fig. 3 is a flow chart of the operation of the method of the present invention.
In the figure: 1-left regulating motor, 2-left clutch, 3-left rotary sensor, 4-left roller, 5-belt, 6-right roller, 7-right rotary sensor, 8-right clutch, 9-right regulating motor, 10-frame, 11-computer.
Detailed Description
The present invention will be further described below.
As shown in fig. 1, the deviation monitoring and correcting device of the belt conveyor comprises a left adjusting motor 1, a left clutch 2, a left rotation sensor 3, a left roller 4, a right adjusting motor 9, a right clutch 8, a right rotation sensor 7, a right roller 6 and a computer 11; the left adjusting motor 1 and the right adjusting motor 9 are servo motors. And a servo motor is adopted, so that the rotating speed of the motor is conveniently controlled.
The left roller 4 and the right roller 6 are coaxially arranged to form a direction-changing roller and are arranged at one end of the belt conveyor, and the left roller 4 and the right roller 6 can rotate along with the belt 5; a gap is reserved between the ends of the left roller 4 and the right roller 6, which are close to each other; the left-handed variable sensor 3 and the right-handed variable sensor 7 are respectively arranged on the left roller 4 and the right roller 6 and are used for collecting the rotation state data of the left roller 4 and the right roller 6, the left adjusting motor 1 and the right adjusting motor 9 are symmetrically arranged on the machine frames 10 on two sides of the direction-changing roller, wherein the left adjusting motor 1 is coaxially connected with the other end of the left roller 4 through the left clutch 2, and when the left clutch 2 is in a combined state, the left adjusting motor 1 can drive the left roller 4 to synchronously rotate; the right regulating motor 9 is coaxially connected with the other end of the right roller 6 through the right clutch 8, and when the right clutch 8 is in a combined state, the right regulating motor 9 can drive the right roller 6 to synchronously rotate;
the computer 11 is arranged on the frame 10, and the computer 11 is a PLC controller or a singlechip. The controller is small in size and stable in working. As shown in fig. 2, the computer 11 is respectively connected with the left adjusting motor 1, the left clutch 2, the left-handed variable sensor 3, the right adjusting motor 6, the right clutch 7 and the right-handed variable sensor 8, and is used for acquiring and analyzing the rotation state data acquired by the left-handed variable sensor 3 and the right-handed variable sensor 7, and then respectively controlling the combination or separation states of the left clutch 2 and the right clutch 8; and simultaneously, the rotating speeds of the left adjusting motor 1 and the right adjusting motor 9 are respectively controlled.
As shown in fig. 3, the working method of the deviation monitoring and correcting device for the belt conveyor comprises the following specific steps:
step one, before the belt conveyor starts to work, setting the initial states of the left clutch 2 and the right clutch 8 to be separation states; then the belt conveyor starts to work, and the belt 5 drives the left roller 4 and the right roller 6 to rotate along with the belt 5, and the left-handed variable sensor 3 and the right-handed variable sensor 7 acquire the rotation state data of the left roller 4 and the right roller 6 respectively according to the acquisition interval and feed the data back to the computer 11 in real time;
step two, after receiving real-time data fed back by a group of left-handed change sensors 3 and right-handed change sensors 6, the computer 11 analyzes and processes the real-time data to obtain the rotation angle theta of the left roller 4 respectively 1 Rotational speed omega 1 Rotation angle theta of right drum 6 2 At a rotational speed of omega 2 The method comprises the steps of carrying out a first treatment on the surface of the Subtracting the rotation angle and rotation speed of the left roller 4 from the rotation angle and rotation speed of the right roller 6 respectively, taking absolute values to obtain a rotation angle difference delta theta and a rotation speed difference delta omega of the left roller and the right roller, and setting a rotation angle threshold value theta 0 And a rotational speed threshold ω 0 (specific threshold setting is obtained by first testing after the belt conveyor is mounted on the required belt conveyor), if the difference between the rotation angles of the left and right rollers is greater than the set threshold value theta 0 Or the speed difference is greater than a threshold omega 0 When the belt conveyer is in the process of the third step, the belt of the belt conveyer is determined to deviate; if not, the computer continues to receive the next group of data and repeats the process of the step;
step three, if omega 1 Less than omega 2 Or theta 1 Less than theta 2 If omega, the belt is considered to be deviated to the left 1 Greater than omega 2 Or theta 1 Greater than theta 2 When the belt is considered to deviate rightwards;
step four, when the belt 5 is determined to deviate, the computer 11 controls the left clutch 2 and the right clutch 8 to be in a combined state, and simultaneously controls the left adjusting motor 1 and the right adjusting motor 9 to start, so that the left adjusting motor 1 drives the left roller 4 to synchronously rotate through the left clutch 2, and the right adjusting motor 9 drives the right roller 6 to synchronously rotate through the right clutch 8, and the step five is entered; .
Step five, according to the judgment condition of the step three, when the belt 5 deviates leftwards, the rotating speed of the left regulating motor 1 for driving the left roller 4 is higher than the rotating speed of the belt 5, so that the adhesive force between the belt 5 and the left roller 4 is increased, and the left roller 4 applies an upward force to the left side of the belt 5; meanwhile, the rotating speed of the right regulating motor 9 driving the right roller 6 is smaller than the rotating speed when the belt 5 is driven, so that the adhesive force between the belt 5 and the right roller 6 is increased, the right roller 6 applies a downward force to the right side of the belt 5, at the moment, the force applied to the belt 5 by the left and right rollers forms a clockwise moment, and finally the belt 5 is driven to deflect to the right side to be positive in the transmission process;
when the belt 5 deviates rightwards, the rotation speed of the right regulating motor 9 driving the right roller 6 is higher than that of the belt 5, so that the adhesive force between the belt 5 and the right roller 6 is increased, and the right roller 6 applies an upward force to the right side of the belt 5; meanwhile, the rotating speed of the left regulating motor 1 driving the left roller 4 is smaller than the rotating speed of the belt 5, so that the adhesive force between the belt 5 and the left roller 4 is increased, the left roller 4 applies a downward force to the left side of the belt 5, at the moment, the left and right rollers apply a counterclockwise moment to the force of the belt 5, and finally the belt 5 is driven to deviate to the right left in the transmission process; the rotating speed of the left roller and the right roller after adjustment during correction can be determined in advance according to the belt material adopted by the installed belt conveyor, the rotating speed and the belt tension degree during belt driving, and thus the motor is directly adjusted to the experimentally determined rotating speed value during subsequent correction, and the belt correction process can be realized.
The specific principle of the correction is as follows: in the normal transmission process of the belt, when the belt 5 drives the left and right rollers to rotate, the rotating speed between the belt 5 and the rollers is consistent, the adhesive force is smaller than the situation that the rotating speeds between the left and right rollers and the belt 5 are inconsistent at the moment, the rotating speeds between the left and right rollers and the belt 5 are changed, the left and right rollers are respectively larger than or smaller than the transmission speed of the belt 5, the sliding rate between the left and right rollers and the belt 5 is adjusted and increased under the condition that the transmission speed of the belt 5 is kept unchanged, the sliding rate and the adhesive force are positively correlated, the adhesive force between the left and right rollers and the belt 5 is increased, the moment in different directions is applied to the belt 5, and the deviation correcting process of the deviation direction of the belt is finally realized.
Step six, the transmission speed of the belt 5 is kept unchanged during the whole deviation correction period, the left-handed change sensor 3 and the right-handed change sensor 7 continuously detect the rotation states of the left and right rollers and continuously transmit data to the computer 11, the computer 11 analyzes and processes the data to obtain the real-time rotation speeds of the left and right rollers and the real-time rotation angles of the left and right rollers, and the obtained real-time rotation speeds are used for controlling the rotation speeds of the left and right regulating motors and calculating the rotation angle difference delta theta of the left and right rollers; when (when)The rotation angle difference delta theta of the left roller and the right roller is smaller than the set threshold value theta 0 When the belt deviation correcting process is finished, the computer 11 controls the rotation speed of the left and right adjusting motors to be consistent with the rotation speed when the belt 5 is driven, and the time is kept for 10-15 s;
and step eight, after the holding time is finished, the computer 11 controls the left clutch and the right clutch to be in a separated state, then the left and right adjusting motors are stopped to work, then the computer 11 continuously receives real-time data fed back by the next group of left-handed variable sensors 3 and right-handed variable sensors 8, and the steps two to eight are repeated, so that the continuous process is realized, and the processes of off tracking monitoring and real-time deviation correction in the working process of the belt conveyor are realized.
As an improvement of the present invention, as shown in fig. 2, the computer 11 is connected with the centralized control center through a cable, and when the computer 11 determines that the belt 5 is off-tracking, the computer 11 transmits the off-tracking signal to the centralized control center, so that the worker can know and check the off-tracking condition in time. Therefore, the influence condition of deviation on transportation can be checked in time, and the belt conveyor can be stopped in time through the centralized control center if an emergency occurs.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (5)
1. The deviation monitoring and correcting device for the belt conveyor is characterized by comprising a left adjusting motor, a left clutch, a left rotary change sensor, a left roller, a right adjusting motor, a right clutch, a right rotary change sensor, a right roller and a computer;
the left roller and the right roller are coaxially arranged to form a direction-changing roller and are arranged at one end of the belt conveyor, and the left roller and the right roller can rotate along with the belt; a gap is reserved between the close ends of the left roller and the right roller; the left-handed variable sensor and the right-handed variable sensor are respectively arranged on the left roller and the right roller and are used for collecting the rotation state data of the left roller and the right roller, the left adjusting motor and the right adjusting motor are symmetrically arranged on the frames at two sides of the bend roller, the left adjusting motor is coaxially connected with the other end of the left roller through a left clutch, and when the left clutch is in a combined state, the left adjusting motor can drive the left roller to synchronously rotate; the right adjusting motor is coaxially connected with the other end of the right roller through the right clutch, and when the right clutch is in a combined state, the right adjusting motor can drive the right roller to synchronously rotate;
the computer is arranged on the frame and is respectively connected with the left adjusting motor, the left clutch, the left rotary change sensor, the right adjusting motor, the right clutch and the right rotary change sensor, and is used for acquiring and analyzing the rotation state data acquired by the left rotary change sensor and the right rotary change sensor and then respectively controlling the combination or separation state of the left clutch and the right clutch; and simultaneously, the rotating speeds of the left regulating motor and the right regulating motor are respectively controlled.
2. The belt conveyor deviation monitoring and correcting device according to claim 1, wherein the left adjusting motor and the right adjusting motor are servo motors.
3. The belt conveyor deviation monitoring and correcting device according to claim 1, wherein the computer is a PLC controller or a single chip microcomputer.
4. A method of operating a belt conveyor deviation monitoring and correction device according to any one of claims 1 to 3, characterized by the specific steps of:
step one, before the belt conveyor starts to work, setting the initial states of a left clutch and a right clutch to be separation states; then the belt conveyor starts to work, and further the belt transmission enables the left roller and the right roller to rotate along with the belt, and the left-handed variable sensor and the right-handed variable sensor acquire respective rotation state data of the left roller and the right roller respectively according to the acquisition interval and feed the data back to the computer in real time;
step two, after the computer receives real-time data fed back by a group of left-handed change sensors and right-handed change sensors, analyzing the positionAfter the treatment, the rotation angle theta of the left roller is respectively obtained 1 Rotational speed omega 1 Rotation angle theta of right roller 2 At a rotational speed of omega 2 The method comprises the steps of carrying out a first treatment on the surface of the Subtracting the rotation angle and the rotation speed of the left roller from the rotation angle and the rotation speed of the right roller respectively, taking absolute values to obtain a rotation angle difference delta theta and a rotation speed difference delta omega of the left roller and the right roller, and setting a rotation angle threshold value theta 0 And a rotational speed threshold ω 0 If the difference between the rotation angles of the left and right rollers is greater than the set threshold value theta 0 Or the speed difference is greater than a threshold omega 0 When the belt conveyer is in the process of the third step, the belt of the belt conveyer is determined to deviate; if not, the computer continues to receive the next group of data and repeats the process of the step;
step three, if omega 1 Less than omega 2 Or theta 1 Less than theta 2 If omega, the belt is considered to be deviated to the left 1 Greater than omega 2 Or theta 1 Greater than theta 2 When the belt is considered to deviate rightwards;
step four, when the belt is determined to deviate, the computer controls the left clutch and the right clutch to be in a combined state, and simultaneously controls the left adjusting motor and the right adjusting motor to start, so that the left adjusting motor drives the left roller to synchronously rotate through the left clutch, and the right adjusting motor drives the right roller to synchronously rotate through the right clutch, and the step five is carried out; .
Step five, according to the judgment condition of the step three, when the belt deviates leftwards, the rotating speed of the left regulating motor for driving the left roller is higher than that of the belt, so that the adhesive force between the belt and the left roller is increased, and the left roller applies an upward force to the left side of the belt; meanwhile, the rotating speed of the right regulating motor driving the right roller is smaller than that of the belt driving, so that the adhesive force between the belt and the right roller is increased, the right roller gives a downward force to the right side of the belt, at the moment, the force of the left roller and the right roller gives a clockwise moment to the belt, and finally the belt is driven to shift to right in the transmission process;
when the belt deviates rightwards, the rotating speed of the right regulating motor driving the right roller is higher than that of the belt, so that the adhesive force between the belt and the right roller is increased, and the right roller gives an upward force to the right side of the belt; meanwhile, the rotating speed of the left regulating motor driving the left roller is smaller than that of the belt driving, so that the adhesive force between the belt and the left roller is increased, the left roller gives a downward force to the left side of the belt, at the moment, the left roller and the right roller form a counterclockwise moment to the force of the belt, and finally the belt is driven to deviate to the right in the transmission process;
step six, during the correction, the left-handed variable sensor and the right-handed variable sensor continuously detect the rotation states of the left roller and the right roller, data are continuously transmitted to a computer, the computer obtains the real-time rotation speed of the left roller and the right roller and the real-time rotation angle of the left roller and the right roller after analysis and processing, and the rotation speed of the left and right adjusting motors is controlled through the obtained real-time rotation speed and the rotation angle difference delta theta of the left roller and the right roller is calculated; when the rotation angle difference delta theta of the left roller and the right roller is smaller than the set threshold value theta 0 When the belt deviation correcting process is finished, the computer controls the rotation speed of the left and right adjusting motors to be consistent with the rotation speed when the belt is driven, and the belt deviation correcting process is kept for a period of time;
and step eight, after maintaining the synchronous rotating speed for a period of time, the computer controls the left clutch and the right clutch to be in a separated state, then stops the left and right adjusting motors to work, then the computer continuously receives real-time data fed back by the next group of left-handed variable sensors and right-handed variable sensors, and repeats the steps two to eight, so that the processes of monitoring the deviation and correcting the deviation in the working process of the belt conveyor are continuously realized.
5. The method for monitoring and correcting the deviation of the belt conveyor according to claim 4, wherein the computer is connected with the centralized control center through a cable, and when the computer determines that the belt is deviated, the computer transmits a deviation signal to the centralized control center, so that a worker can know and check the deviation in time.
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