WO2022008288A1 - Dispositif et procédé de surveillance de surveillance de l'état d'une bande transporteuse d'un système de bande transporteuse - Google Patents

Dispositif et procédé de surveillance de surveillance de l'état d'une bande transporteuse d'un système de bande transporteuse Download PDF

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Publication number
WO2022008288A1
WO2022008288A1 PCT/EP2021/067729 EP2021067729W WO2022008288A1 WO 2022008288 A1 WO2022008288 A1 WO 2022008288A1 EP 2021067729 W EP2021067729 W EP 2021067729W WO 2022008288 A1 WO2022008288 A1 WO 2022008288A1
Authority
WO
WIPO (PCT)
Prior art keywords
conveyor belt
sensor
monitoring
holding
folding
Prior art date
Application number
PCT/EP2021/067729
Other languages
German (de)
English (en)
Inventor
Michael Schulte Strathaus
Original Assignee
Schulte Strathaus GmbH & Co. KG Fördertechnik Dichtungssysteme
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 Schulte Strathaus GmbH & Co. KG Fördertechnik Dichtungssysteme filed Critical Schulte Strathaus GmbH & Co. KG Fördertechnik Dichtungssysteme
Publication of WO2022008288A1 publication Critical patent/WO2022008288A1/fr

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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
    • B65G43/02—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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
    • 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
    • B65G2203/042—Sensors
    • 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
    • B65G2207/00—Indexing codes relating to constructional details, configuration and additional features of a handling device, e.g. Conveyors
    • B65G2207/40—Safety features of loads, equipment or persons

Definitions

  • the invention relates to a monitoring device for monitoring the status of a conveyor belt system.
  • the monitoring device has a holding device, at least one force transmission device attached to the holding device and an adjustment device which is connected to the holding device and/or the force transmission device in such a way that a surface of the force transmission device can be brought into contact with the conveyor belt.
  • the present invention relates to a method for monitoring the status of a conveyor belt of a conveyor belt system using a monitoring device of the aforementioned type.
  • Conveyor belt systems have a moving conveyor belt for transporting bulk materials such as sand, gravel, coal, ore or the like.
  • control methods are known with which the condition of the conveyor belt can be monitored optically.
  • this requires a complex evaluation of the measurement results and is also prone to error, associated with high operating, maintenance and manufacturing costs. If damage or potential damage - for example due to adhering bulk material - is detected too late, this can cause damage to the entire conveyor belt system or even a failure of the conveyor belt system and cause follow-up costs that are difficult to estimate. For example, if bulk material gets into the drive system of the conveyor belt system, the damage can be considerable.
  • Damage to the conveyor belt should be detected as early, reliably and automatically as possible, whereby false detections (damage is assumed although there is actually no damage) should be avoided as far as possible.
  • damage occurs, its position on the conveyor belt is preferably detected as precisely as possible.
  • the object of the present invention is therefore to provide a monitoring device and a method for efficiently and reliably monitoring the status of a conveyor belt of a conveyor belt system, in particular where the disadvantages of the prior art are to be avoided or at least substantially reduced.
  • the present invention provides a monitoring device for monitoring the status of a conveyor belt of a conveyor belt system.
  • the monitoring device has a folding device, at least one power transmission device attached to the folding device and a screwdown device.
  • the adjusting device is connected to the folding device and/or the force transmission device in such a way that a surface of the force transmission device can be brought into contact with the conveyor belt.
  • At least one sensor is arranged on and/or in the folding device to monitor the condition of the conveyor belt.
  • a change in the mechanical stress tensor of the folding device can be detected directly and/or at least indirectly by means of the sensor.
  • At least one sensor is arranged on and/or in the adjusting device in order to monitor the state of the conveyor belt.
  • a change in the mechanical stress tensor of the adjustment device can be detected directly and/or at least indirectly by means of the sensor.
  • the at least indirect condition monitoring of the change in the mechanical stress tensor of the folding device or the screwing device can ensure that the condition of the conveyor belt can be monitored or conclusions can be drawn about the condition of the conveyor belt, preferably for damage detection.
  • the mechanical stress tensor of the holding device or the adjusting device can change in the event of an expanding and/or compressing deformation of the holding device or the adjusting device.
  • the sensor can be used to provide a pick-up that detects such a change.
  • a change in the mechanical stress tensor of the holding device or the adjusting device can provide information about the stress and/or the load on the holding device or the adjusting device, which in turn can be related to the condition of the conveyor belt.
  • the mechanical tension of the holding device or the adjusting device is ultimately a measure of the internal stress as a result of an external load.
  • the external load is triggered during operation of the conveyor belt system by using the power transmission device, which is arranged on the holding device.
  • stress tensor characterizes the fact that the holding device or the adjusting device is a three-dimensional object in or on which mechanical stresses can ultimately occur.
  • the mechanical stresses appear in physical laws as components of the stress tensor.
  • the stress tensor describes the state of stress in or at a certain point within the holding device or the adjusting device.
  • Stress tensors at the same reference point can be compared with each other.
  • the sensor is arranged at a specific point and acquires at least indirectly the mechanical stress tensor and/or variables that are related to the mechanical stress tensor, with the change in the mechanical stress tensor being able to be acquired or detected at just any arrangement point of the sensor.
  • normal stresses in the normal direction and tangentially acting (transversal) shear stresses are combined into one mathematical object in the stress tensor.
  • the entire stress tensor does not have to be recorded experimentally in order to monitor the state of the stress tensor, but that the detection of a change already provides information about the state of the conveyor belt, in particular with the change in the stress tensor affecting the at least Essentially the same reference point refers.
  • a monitoring device is provided in which a reliable, efficient and economical monitoring of the conveyor belt can be made possible in a comparatively simple manner by monitoring the folding device or the adjusting device.
  • the condition of the conveyor belt can be monitored.
  • the sensor can be used to detect a load caused by the conveyor belt and occurring on the folding device or the screwdown device when the force transmission device or the screwdown device is in contact with the conveyor belt.
  • the load on the folding device or the screw-on device is recorded in particular by the stress on the folding device or the screw-on device due to the operation of the conveyor belt system and by the power transmission device which is placed on the conveyor belt.
  • the sensor can be used to detect when the folding device or the adjusting device undergoes such a change that the force transmission device is or has been brought out of contact with the conveyor belt.
  • the senor can preferably be designed to detect a bending moment, torque and/or shear and/or transverse forces exerted by the conveyor belt on the folding device or the screwdown device of a deformation of the folding device or the screwdown device caused by the conveyor belt.
  • a deformation of the folding device can occur in particular when the folding device or the screwing device, in particular in the event of damage to the conveyor belt, which in turn can be detected by the sensor.
  • the mechanical stress tensor of the holding device or the adjusting device also changes. This can be detected at least indirectly by the sensor.
  • the sensor preferably comprises a strain gauge or is designed as a strain gauge.
  • the strain gauge ultimately serves in particular to detect expanding and/or compressing deformations, with the strain gauge changing its electrical resistance during such a deformation and/or expansion.
  • the senor is designed to detect vibrations caused by the conveyor belt and occurring on and/or in the holding device or on and/or in the adjusting device. According to the invention, it has been found that by detecting the vibrations, it is possible to draw conclusions about the condition of the conveyor belt, so that in particular possible damage to the conveyor belt can be detected promptly and thus rectified.
  • the senor is attached exclusively to and/or in the holding device or on and/or in the adjusting device and/or is coupled exclusively to the holding device or the adjusting device.
  • the sensor may be located immediately adjacent to the power transmission or may be spaced from the power transmission. Even in a position at a distance from the force transmission device, the sensor can detect a change in the mechanical tension of the holding device due to loading and/or stress on the holding device or the adjusting device.
  • the sensor is preferably arranged, in particular glued, on a surface of the holding device or the adjusting device.
  • the sensor is preferably arranged in a central area of the holding device.
  • the holding device preferably has a holding section, in particular a central holding section, which is directly adjacent to the force transmission device with at least one region or area.
  • the sensor can preferably be arranged on and/or in the holding section. It goes without saying that the holding section can also have areas and/or surfaces that are not directly adjacent to the force transmission device.
  • the particularly centrally arranged holding section has at least one front area directly adjacent to the force transmission device, a rear area opposite the front area and two side areas connecting the front area and the rear area.
  • the holding section can have the external shape and/or basic shape of a circle, oval, polygon, in particular a rectangle or a hexagonal shape, and/or an I-profile.
  • a load and/or stress on the holding device caused by the force transmission device can be introduced into the holding device via the front area of the holding section.
  • the sensor can preferably be arranged on the front area, on the rear area or on one of the side areas. At least one additional sensor is preferably arranged in the front area and/or at least one additional sensor in the rear area and/or at least one additional sensor in one of the side areas.
  • the further sensor can be constructed at least essentially identically to the first sensor. Alternatively or additionally, it can also be provided that the sensors differ from one another. Ultimately, the further sensor can also be designed for the indirect detection of a change in the mechanical stress tensor of the holding device and is also arranged on and/or in the holding device.
  • the additional sensor reference can be made to the previous statements on the sensor, which also apply in the same way to the additional sensor.
  • One sensor is particularly preferably arranged in the front area and another sensor in the rear area.
  • a sensor is arranged on a side area and a further sensor on a further side area.
  • the senor and/or at least one further sensor is arranged at least essentially eccentrically in relation to the longitudinal axis of the holding device on and/or in the holding device, in particular eccentrically on the holding section the holding device.
  • the longitudinal axis of the holding device corresponds in particular to the direction of the greatest extension of the holding device.
  • the longitudinal axis of the holding device is in particular arranged transversely, preferably at an angle of 90°+/-20°, to the conveying direction of the conveyor belt.
  • the senor and at least one additional sensor are arranged on the front area of the holding section, with the greatest extent of the sensor running in the direction of the longitudinal axis of the holding device and the greatest extent of the additional sensor running transversely to the longitudinal axis of the holding device.
  • at least two further sensors can be arranged on the rear area of the holding section, with the largest extension of one sensor running in the direction of the longitudinal axis of the holding device and the largest extension of the other sensor running transversely to the longitudinal axis of the holding device.
  • the senor and at least one further sensor are arranged on the front area of the holding section, preferably eccentrically, with the greatest extension of each sensor running in the direction of the longitudinal axis of the holding device.
  • at least two further sensors can be arranged on the rear area of the holding section, preferably eccentrically, with the greatest extension of each sensor again running in the direction of the longitudinal axis of the holding device.
  • the influence of temperature differences can be reduced. It is known that material—or the holding device—also deforms or expands when the temperature changes and thus causes a change in the mechanical stress tensor. This However, changes due to the temperature difference do not directly indicate the condition of the conveyor belt and should preferably be "filtered out".
  • the sensor is arranged on a side area of the holding section.
  • a further sensor can be arranged on the other side area of the holding section. The greatest extension of each sensor preferably runs at an angle of 45°+/-10° to the direction of the longitudinal axis of the holding device.
  • the senor and/or at least one further sensor is/are arranged outside of the holding section.
  • several sensors can be provided, which are coupled by means of at least one bridge circuit.
  • the sensors are particularly preferably designed as strain gauges which are coupled by means of at least one bridge circuit.
  • a bridge circuit is advantageous in that temperature effects can be compensated.
  • measuring errors caused by temperature differences can be compensated for by connecting a plurality of sensors to at least one bridge circuit.
  • the efficiency of the entire monitoring device can be further improved.
  • the measurement errors caused by the temperature differences can be caused by climatic conditions as well as by the bulk material and/or by the operation of the entire conveyor belt system.
  • the monitoring device preferably has a transmission device that is designed for wired and/or wireless transmission of measurement signals from the sensor and/or evaluation results that have been determined by an evaluation device based on the measurement signals from the sensor to a control device.
  • the measurement results recorded by the sensor are amplified by at least one amplification device.
  • the sensor signals or measurement results recorded by the sensor can be processed before they are transmitted. The processing of the measurement results can preferably be carried out by the evaluation device and/or the control device.
  • the transmission device enables in particular an external - i.e. outside of the holding device and/or the sensor - processing and/or evaluation of the measurement signals or results of the sensor.
  • the power transmission device can be arranged directly or at least essentially indirectly on a deflection roller of the conveyor belt.
  • a further power transmission device can also be arranged on a lower run of the conveyor belt in the running direction of the conveyor belt behind the first power transmission device.
  • the holding device is preferably adjustable.
  • the adjusting device preferably generates the necessary pretension so that the surface of the force transmission device can be brought into contact with the conveyor belt.
  • the adjusting device can have a drive motor.
  • the force transmission device can be exchangeably arranged on the holding device.
  • the present invention also relates to a method for monitoring the
  • the method includes providing a monitoring device according to at least one of the embodiments described above. Furthermore, in the method according to the invention, a change in the mechanical stress tensor of the holding device or the adjusting device that is caused by the conveyor belt and occurs on and/or in the holding device or on and/or in the adjusting device of the monitoring device is detected - at least indirectly - when the force transmission device is in contact with the conveyor belt. According to the invention, it is understood that during and/or after changing the mechanical stress tensor of the holding device or the adjusting device, the force transmission device can also have been brought out of contact with the conveyor belt, in particular due to damage occurring to the conveyor belt.
  • the force transmission device is in contact with the conveyor belt and is held by the holding device, with the force transmission device claiming the holding device.
  • the method according to the invention enables the conveyor belt to be monitored in an efficient, reliable and economical manner, in which case possible damage to the conveyor belt is detected in good time.
  • a bending moment exerted by the conveyor belt on the holding device or the adjusting device and/or shearing and/or transverse forces and/or a deformation of the holding device or the adjusting device caused by the conveyor belt is detected, preferably by means of a sensor designed as a stretch mark.
  • a plurality of sensors, in particular designed as strain gauges can also be used, which are connected to one another in particular with a bridge circuit and/or whose signals are preferably amplified.
  • vibrations caused by the conveyor belt and occurring on and/or in the holding device or on and/or in the adjusting device are detected. The vibrations can be determined in particular by the sensor(s).
  • measurement signals of the sensor and/or evaluation results which have been determined on the basis of the measurement result of the sensor, are transmitted to a control device in a wired and/or wireless manner.
  • the measurement signals of the sensor can be processed in the control device.
  • the bulk material quality and/or pretensioning forces of the adjusting device and/or a loss of performance of the conveyor belt and/or an elongation of the conveyor belt can be recorded.
  • a comparison with limit values can also be carried out so that possible damage to the conveyor belt can be detected in good time.
  • the position of the damage is also determined.
  • the starting position of the conveyor belt is initiated by a signal, in which case the distance between the damage and the starting position can be calculated by the control device by multiplying the time interval between the measured value and the measured value of the starting position by the belt speed. It can thus be made possible according to the invention that a complex search for the damage on a conveyor belt—in particular several kilometers long—can be avoided.
  • the extent of the damage can also be estimated by the control device, so that an alarm and/or a warning and/or an immediate stop of the conveyor belt system can be generated or transmitted.
  • the quality of the bulk material can be determined in particular on the basis of the measurement data recorded by the sensor in such a way that conclusions can be drawn about the quality of the bulk material, in particular that which has been removed from the force transmission device can be drawn. In particular, it can be determined whether the bulk material is, for example, wet, dry or sticky or the like.
  • limit values are determined from maximum values of the measurement signals of the sensor of the monitoring device after the force transmission device has been brought into contact with the conveyor belt, with a warning signal being output if one of the limit values is exceeded after the limit values have been determined will.
  • limit values can be determined that are individually adapted to the respective conveyor belt system and can be used for monitoring and in particular for the timely detection of damage.
  • the limit values are adapted to the conveyor belt used in the conveyor belt system.
  • the maximum values of the measurement signals of the sensor can either have a positive or negative sign, based on the absolute numerical measurement result, or they can be positive or negative measurement signals.
  • average values of the measurement signals from the sensor can also be used to detect damage.
  • the monitoring method and/or the monitoring device can be configured by determining the limit values to be defined.
  • the relevant evaluation and/or calibration can preferably be carried out by the control device.
  • FIG. 1 shows a schematic perspective representation of a discharge end of a conveyor belt system and a first embodiment of a monitoring device according to the invention
  • FIG. 2 shows a schematic side view of a discharge end of a conveyor belt system and a second embodiment of a monitoring device according to the invention
  • FIG. 3a shows a schematic representation of a plan view of the conveyor belt system from FIG. 1 in a first state
  • FIG. 3b shows a schematic representation of the conveyor belt system shown in FIG. 3a in a second state
  • FIG. 4 shows a schematic perspective representation of a folding section of a folding device with a first sensor arrangement of a monitoring device according to the invention
  • FIG. 5 shows a schematic perspective illustration of a folding section of a folding device with a second sensor arrangement of a monitoring device according to the invention
  • FIG. 6 shows a schematic perspective illustration of a folding section of a folding device with a third sensor arrangement of a monitoring device according to the invention
  • FIG. 7 shows a schematic representation of a connection of sensors according to the invention to form a bridge circuit
  • FIG. 8 shows a schematic representation of a further embodiment of a monitoring device according to the invention.
  • Fig. 1 shows schematically a conveyor belt system 1 with a conveyor belt 2, in which a first embodiment of a monitoring device 3 according to the invention for monitoring the condition of the conveyor belt 2 is used.
  • the monitoring device 3 is designed to transmit measurement data to a control and/or processing device 4, for example.
  • the monitoring device 3 has a folding device 5 and at least one force transmission device 6 attached to the folding device 5 , in this case three force transmission devices 6 . Furthermore, the monitoring device 3 comprises an adjusting device 7 which is connected to the folding device 5 in such a way that a surface of the force transmission device 6 can be brought into contact with the conveyor belt 2 .
  • At least one sensor 8 is arranged on and/or in the folding device 5 to monitor the condition of the conveyor belt 2 .
  • At least one sensor 8 is arranged on and/or in the adjusting device 7 to monitor the condition of the conveyor belt 2, with the sensor 8 detecting a change in the mechanical stress tensor of the adjusting device 7 can be detected at least indirectly.
  • measurement data from the sensor 8 can be compared at the same reference point or at the same arrangement point.
  • Fig. 1 shows - in a schematic representation - in the conveying direction front end of the conveyor belt system 1 for conveyed goods 9.
  • the conveyed goods 9 can also be referred to as bulk goods.
  • the conveyor belt 2 has an upper conveyor section 10 and an underlying return section 11 (lower strand).
  • the conveyor belt 2 is arranged in the conveyor belt system 1 in an endlessly revolving manner.
  • the conveyor belt 2 runs around a deflection roller 12 in the transition area from the conveying section 10 to the return section 11.
  • a drive Connected to the conveyor belt 2 is a drive which is not shown in more detail and which is provided for driving the conveyor belt 2 .
  • conveyed material 9 located thereon is indicated schematically in FIG.
  • bulk material such as sand, gravel, coal, ore or the like can be transported as conveyed material 9 .
  • the power transmission device 6 acts on the conveyor belt 2 in the transition region from the conveying section 10 to the return section 11, which is at the front in the conveying direction.
  • Fig. 2 shows a schematic side view of a discharge end of a conveyor belt system 1 and a second embodiment of a monitoring device 3 according to the invention.
  • the monitoring device 3 has, in addition to the folding device 5 explained above, a further holding device 5' on which at least one further power transmission device 6 'Here three more power transmission devices 6' is/are attached.
  • the monitoring device 3 comprises a further screw-on device (not shown in FIG. 2) which is connected to the further folding device 5' in such a way that a surface of the further force transmission devices 6' can be brought into contact with the conveyor belt 2.
  • the further folding device 5' is arranged here in the conveying direction behind the folding device 5 shown in FIG.
  • the folding device 5 has a centrally arranged folding section 13 with at least one front area 14 arranged directly on the force transmission devices 6, a rear area 15 opposite the front area 14 and two side areas 16 connecting the front area 14 and the rear area 15 - example according to FIG. 1, the sensor 8 is arranged on the front area 14.
  • FIG. Here the sensor 8 is attached exclusively to the folding device 5 . It is not shown in more detail that a load caused by the conveyor belt 2 and occurring on the holding device 5 can be detected by means of the sensor 8 when at least one of the force transmission devices 6 is in contact with the conveyor belt 2 .
  • FIG. 3a shows schematically in FIG. 3a that the state of the conveyor belt 2 is monitored with the sensor 8 when the force transmission device 6 is in contact with the conveyor belt 2.
  • FIG. A comparison with FIG. 3b shows that a change in the form of a deformation of the holding device 5 has taken place.
  • the power transmission devices 6 are no longer in direct contact with the conveyor belt 2. This state can be caused, for example, if the conveyor belt 2 is damaged.
  • the change in the holding device 5 can be detected by the sensor 8 .
  • FIG. 3 b shows schematically that the sensor 8 is designed to detect a bending moment exerted by the conveyor belt 2 on the holding device 5 and/or a deformation of the holding device 5 caused by the conveyor belt 2 . What is not shown is that the sensor 8 can also do the same when arranged on the adjusting device 7 .
  • FIGS. 4 to 6 show a schematic perspective view of a holding section 13 of a holding device 5 of a monitoring device 3 according to the invention, with different arrangements of sensors 8.
  • the sensors 8 Strain gauges are provided.
  • the sensors 8 can include strain gauges or be designed as such.
  • the section of the holding device 5 shown in FIGS. 4 to 6 can in particular be the holding section 13, which is arranged in direct contact with the force transmission device 6, which is not shown there.
  • the holding section 13 has at least one front area 14 to be arranged directly on the force transmission device 6, a rear area 15 opposite the front area 14, and two side areas 16 connecting the front area 14 and the rear area 15.
  • a load is introduced from the force transmission device 6 into the holding device 5.
  • the holding section 13 here has the basic shape of a circle—seen in cross section.
  • two sensors 8 are arranged on the front area 14 of the holding section 13 , with the greatest extension of the sensors 8 running in the direction of the longitudinal axis X of the holding device 5 .
  • two further sensors 8 are arranged on the rear area 15 of the holding section 13 , the greatest extent of the sensors 8 again running in the direction of the longitudinal axis X of the holding device 5 .
  • two sensors 8 are arranged eccentrically on the front area 14 of the holding section (on both end areas), with the greatest extent of each sensor 8 being at an angle of 45° +/- 10° to the direction of the longitudinal axis X the holding device 5 runs.
  • two further sensors 8 are arranged eccentrically in each end area on the rear area 15 of the holding section 13 , the greatest extension of each sensor 8 again running at an angle of 45°+/-10° to the direction of the longitudinal axis X of the holding device 5 .
  • each sensor 8 is arranged eccentrically on a side area 16 of the holding section 13 .
  • the greatest extension of each sensor 8 runs at an angle of 45° +/- 10° to the direction of the longitudinal axis X of the holding device 5.
  • the sensors 8 shown in FIGS. 4 to 6 can be coupled to one another and/or have the same construction. It can also be provided that the sensors 8 shown in FIGS. 4 to 6 are coupled or connected to one another via at least one bridge circuit.
  • the sensor 8 can be designed to detect vibrations caused by the conveyor belt 2 and/or occurring in the holding device 5 or on and/or in a positioning device 7 .
  • FIG. 7 shows schematically that several sensors 8 are provided, which are coupled by means of a bridge circuit. The plurality of sensors 8 can be designed in particular as strain gauges.
  • 8 shows schematically that a transmission device 17 of the monitoring device 3 is provided for transmitting the measurement results of the sensor 8 .
  • the transmission device 17 is designed for the wired and/or wireless transmission of the measurement signals of the sensor 8 and/or of evaluation results that have been determined by an evaluation device 18 on the basis of the measurement signals of the sensor 8 to a control device 4 .
  • the 8 also shows the evaluation device 18 schematically.
  • the evaluation device 18 can be arranged on the folding device 5 and/or in the folding device 5 or externally to the folding device 5 .
  • the evaluation device 18 can also be coupled to the sensor 8 and receive the measured signals from the sensor 8 .
  • a method for monitoring the status of a conveyor belt 2 of a conveyor belt system 1 is not shown in detail.
  • the method includes the provision of the monitoring device 3 according to at least one of the previously described embodiments.
  • a change in the mechanical stress tensor of the folding device 5 or the screwing device 7 caused by the conveyor belt 2 and occurring on the folding device 5 or the screwing device 7 is detected by the monitoring device 3 when the force transmission device 6 is in contact with the conveyor belt 2.
  • the folding device 5 or the adjusting device 7 detects a bending moment exerted on the conveyor belt 2 and/or a deformation of the folding device 5 or the adjusting device 7 caused by the conveyor belt 2 .
  • This deformation can be detected in particular by means of a sensor 8 designed as a strain gauge. It is not shown in more detail that vibrations caused in the process by the conveyor belt 2 and/or occurring on and/or in the folding device 5 or on and/or in the adjusting device 7 can be detected.
  • 8 shows that the measurement signal or the measurement results of the sensor 8 and/or evaluation results, which were determined on the basis of the measurement signals of the sensor 8, are transmitted to a control device 4 in a wired and/or wireless manner.
  • a warning signal can be output if, after the limit values have been determined, one of the limit values is exceeded—namely by the measurement signals detected by the sensor 8 .

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  • General Physics & Mathematics (AREA)
  • Control Of Conveyors (AREA)
  • Structure Of Belt Conveyors (AREA)

Abstract

L'invention concerne un dispositif de surveillance (3) destiné à surveiller l'état d'une bande transporteuse (2) d'un système de bande transporteuse (1), comprenant un dispositif de retenue (5), au moins un dispositif de transmission de force (6) fixé au dispositif de retenue (5), et un dispositif de positionnement (7) qui est relié au dispositif de retenue (5) et/ou au dispositif de transmission de force (6) de telle sorte qu'une surface du dispositif de transmission de force (6) peut être amenée en contact avec la bande transporteuse (2). Selon l'invention, pour surveiller l'état de la bande transporteuse (2), au moins un capteur (8) est disposé sur et/ou dans le dispositif de retenue (5) ou sur et/ou dans le dispositif de positionnement (7), lequel permet de détecter au moins indirectement une modification du tenseur de contrainte mécanique du dispositif de retenue (5) ou du dispositif de positionnement (7).
PCT/EP2021/067729 2020-07-08 2021-06-28 Dispositif et procédé de surveillance de surveillance de l'état d'une bande transporteuse d'un système de bande transporteuse WO2022008288A1 (fr)

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DE102020117972.3 2020-07-08
DE102020117972.3A DE102020117972A1 (de) 2020-07-08 2020-07-08 Überwachungsvorrichtung und Verfahren zur Überwachung des Zustands eines Förderbands einer Förderbandanlage

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JP7393598B1 (ja) 2023-02-28 2023-12-07 マフレン株式会社 ベルトコンベアの監視装置とそれを用いたベルトクリーナ

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JP2022016275A (ja) 2022-01-21
TW202202425A (zh) 2022-01-16
KR20220006448A (ko) 2022-01-17

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