EP3914545A1 - Transporteur à courroie et tambour destiné à un transporteur à courroie - Google Patents

Transporteur à courroie et tambour destiné à un transporteur à courroie

Info

Publication number
EP3914545A1
EP3914545A1 EP19828271.7A EP19828271A EP3914545A1 EP 3914545 A1 EP3914545 A1 EP 3914545A1 EP 19828271 A EP19828271 A EP 19828271A EP 3914545 A1 EP3914545 A1 EP 3914545A1
Authority
EP
European Patent Office
Prior art keywords
drum
belt
axis
sensors
sensor
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
EP19828271.7A
Other languages
German (de)
English (en)
Inventor
Manfred ZIEGLER DR.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
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 Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP3914545A1 publication Critical patent/EP3914545A1/fr
Pending legal-status Critical Current

Links

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
    • 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
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/18—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration in two or more dimensions
    • 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)
    • 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

Definitions

  • the invention relates to drums for a belt conveyor and a belt conveyor and a method for operating the belt conveyor.
  • Drums in conveyor systems must be well aligned so that the belt does not skew. Due to the size and weight, handling is difficult and alignment with aids such as spirit levels, laser measuring devices or the like. time consuming and cumbersome. A misalignment can often only occur during operation, e.g. due to deformation of the steel structure or movement of the subsurface. Reliable detection of such misalignment is not yet possible.
  • damaged drums are often the cause of unplanned downtimes. Damage detected too late, such as cracks in the drum jacket or drum base, can also cause serious damage to the belt.
  • a bearing roller for a belt conveyor is known from WO 2015/042661 A2, which is provided with sensors, in particular temperature sensors for monitoring the condition of the bearing roller.
  • the storage roll is equipped with a generator for the generation of electrical energy.
  • a belt conveyor is known from WO 2016/135642 A2, which is provided with a system for preventing fire.
  • the shaft of a tape roll of the Belt conveyor is equipped with a temperature sensor.
  • a transmitter is assigned to this sensor, the transmitter transmitting the sensor signals to an intended receiver.
  • the energy required for this sensor system is generated inductively in the tape roll.
  • a system for monitoring the state of the conveyor belt is known from WO 10033526 A1.
  • the object of the invention is to reduce the operating costs and the downtimes of the belt conveyor.
  • the belt conveyor can be switched off and / or an indication of the type of damage and location of damage in the belt can be made.
  • damage can be prevented in the event of misalignment and a foreign body on the drum body.
  • Force measuring devices and / or acceleration sensors are provided for this damage detection.
  • the force measuring device comprises strain gauges. Strain gauges have been found to be particularly suitable because they are very robust and inexpensive and provide very accurate measurements.
  • Each force measuring device preferably consists of at least two strain gauges, which are arranged offset on a circular ring.
  • the number and arrangement of the strain gauges are ideally selected so that at least one strain gauge per force measuring device is always in the same circle segment as the belt lying on it. As a result, a good signal for the detection of belt damage, a foreign body or a belt connection can be generated at any time.
  • an energy recovery device preferably a generator, is arranged between the drum jacket and the drum axis.
  • the sensors can be supplied with electrical energy and possibly also a telecommunications device and also a signal processor with electrical energy.
  • a cable-guided energy supply from the outside is therefore not required, which simplifies the construction. If a discharging energy store is used, regular replacement would be necessary, which is disadvantageous.
  • the space available inside the drum jacket and drum base can be used for the arrangement. The energy supply is protected inside the drum, e.g. from moisture and dust.
  • the sensors are arranged between the drum shell and the bearing of the drum axis. This means that the sensors are easily accessible from the outside and can be easily replaced in the event of a defect.
  • misalignments of the drum in particular can be recognized particularly well on the basis of the deviations of the sensor data from the two sides from one another. The deviation can be a difference or a time offset.
  • a signal processor is arranged on the drum axis. This signal processor can already process the measurement data. This makes it possible to reduce the amount of data transmitted by only transmitting data records that indicate misalignment or damage to the belt and / or bearing.
  • the measurement data of the sensors can be transmitted wirelessly by means of this telecommunication device.
  • a signal line for data transmission e.g. by means of a slip ring. This can be provided in particular under difficult environmental conditions in which wireless transmission is problematic or unreliable.
  • sensor data associated with each drum side in particular data from force measuring devices and / or acceleration sensors, are recorded with a time assignment. There is a comparison of the temporally assigned sensor data. These sensor data are also referred to as measurement data.
  • data processing In data processing, misalignment and / or belt damage due to a foreign body are detected. For this purpose, recorded differences in the sensor data of the different sides, which can include both a difference and a time offset, are used. In a preferred embodiment, it can be provided that the measurement data are already being processed and only data records are transmitted in which there are abnormalities. This can reduce the amount of data transferred. Data can be stored in the data processing, preferably in the central data processing, which directly allow the output of a misalignment or the indication of which type of damage to the belt is present at which location.
  • the sensor data are generated by sensors between the drum base and the bearing from force and / or acceleration sensors arranged on both sides. This makes misalignments particularly easy to recognize from the sensor data.
  • both belt tensile forces are almost the same. The difference arises from the bearing friction torque and can be neglected in comparison to the belt tensile forces.
  • the belt tensile force in front of and behind the drum is therefore about half of the axle load measured using force sensors.
  • the two belt tensile forces in front of and behind the drum differ by the circumferential force, which can be determined from the torsional stress component of the force measuring devices. If the belt tensile forces are known at both ends of the unloaded lower run, it is possible to determine the idler roller resistance based on the measurement data of the force measuring devices.
  • the use of such a drum is therefore particularly advantageous as a supplement to the Voith product BeltGenius ERIC.
  • FIG. 1 a section of a belt conveyor is shown.
  • a drum 7 is shown.
  • a belt 1 is deflected by the drum 7.
  • the belt comprises a part designated as the upper run 6 and a part referred to as the lower run 5.
  • the running direction of the belt is designated as the longitudinal axis of the belt with the X axis.
  • the belt transverse axis 3 corresponds to the y axis and the z axis 4 runs counter to the force of gravity.
  • the drum 7 is shown in detail in FIG.
  • the drum 7 comprises a drum body 22 mounted on a drum axis 20.
  • the drum axis 20 is supported on both sides by bearing 21.
  • the axis of rotation of the drum axis is designated by 26.
  • a drum 7 is equipped with a sensor system 10 for receiving measurement signals, a signal processor 24 for signal processing and with a telecommunication device 23.
  • the recorded and generated data can be received by an assigned central data processing 30.
  • strain gauges 12 are provided for detecting bending and torsional stresses. In the illustration shown, these strain gauges 12 are provided on both sides.
  • acceleration sensors 13, preferably 3-axis, are attached to the drum axis 20, preferably also on both sides.
  • the electrical energy required for sensors 10, signal processor 24 and remote data transmission 23 is provided by an integrated generator 25. The generator obtains the electrical energy from the drum speed.
  • the belt 1 is controlled in the direction of the lower edge tensions.
  • the two force measuring devices 11 on the drum axis 20 on the left and right between the drum base 28 and the bearing 21 deliver equally large forces in the z direction and practically none in the y direction a rotation about the z-axis to unequal forces left and right in the x direction and to axial forces in the y direction.
  • the size of the angle of rotation around the z-axis can be deduced from the axle load (sum of the two forces in the x-direction) and the axial force.
  • the position of the belt on the drum can be concluded from the ratio of the two forces in the x direction.
  • the orientation of a 3D acceleration sensor 13 in space can be clearly determined, since the acceleration due to gravity is reflected in the three coordinate axes in accordance with the rotation of the sensor.
  • the two acceleration sensors 13 e.g. Aligned on the shaft so that its y component is parallel to the drum axis 20 and if the drum 7 is ideally aligned horizontally (no rotation about the x axis), the acceleration due to gravity is only found in the x and sine and cosine signals. and z components according to the angle of rotation of the drum axis, while the y component measures no signal from the acceleration of gravity.
  • the y component When the drum 7 is rotated about the x-axis 2, the y component also has a signal from the acceleration of gravity which fluctuates periodically with the drum speed, the height of which corresponds to the angular error.
  • the drum body 22 increases the section modulus of the drum 7 against deflection, which occurs from the weight of the drum, but mainly from the belt tension.
  • the force signals from the two force measuring devices 11 behave periodically uniformly and the deflection is found as a sinusoidal force signal in the y-direction of the same size.
  • a crack in one of the two drum bottoms 28 or in the drum casing 29 will lead to a characteristic disturbance of these signals and, by comparing the signals from the two sides of the drum 7, will enable the size and position of the crack to be determined.
  • the Effect of different crack shapes on the stress distribution in the drum axis 20 can be calculated using FEM. This information can be stored in a memory. This enables the damage to be assigned and characterized.
  • the signals from the acceleration sensors 13 can be used to assess the state of the two bearings 21.
  • the complete conveyor belt 1 of a belt system is composed of individual belt sections - usually by vulcanizing the appropriately prepared belt ends, and in the case of low-strength belts partly also by mechanical clamp connections.
  • the connections represent a spatially sharply defined inhomogeneity of the belt, which can be clearly found both in the signals of the force measuring devices 11 and in those of the acceleration sensors 13. Since not all of the belt pieces have the same length, the sequence of the connections can be used to infer the longitudinal belt coordinate as follows: the drum speed can be determined very precisely from the signals from the sensors 10. On the basis of the drum speed and with the drum diameter, which is also known, an exact speed signal, the integration of which in time provides the longitudinal coordinate, can be determined.
  • the belt 1 itself tends to skew - for example, because connections are made wrong or because the belt tensile force is not distributed symmetrically over the belt cross-section due to errors in the manufacturing process, this will be reflected in the force signals.
  • the sum of the two force signals corresponds to the axle load from the two belt forces (rising and falling belt).
  • the level of this axle load depends on the load and the current drive power and therefore usually changes very slowly.
  • a misalignment arising from the belt itself will lead to a pattern recurring with the belt's rotational frequency in the distribution of the axle load between the two force measuring devices 11 and can thus be recognized and analyzed.
  • a connection that becomes defective should be noticeable by a change in the signal pattern of this connection when it passes through the drum 7.
  • Overstretched edge ropes of the belt shift the axle load to the "healthy" side.
  • a transverse edge break shows up in a time-limited, asymmetrical distribution of the axle load.
  • the permanent measurement of the axle load and the drum speed enable the creation of load spectra and prospective service life forecasts.
  • the behavior of the transmission can be monitored by comparing the torque measurement in front of the transmission input with the torque measurement on the drum axis 20.
  • the torque measurement in front of the gearbox can e.g. in the transmission-side part of a charge-controlled starting clutch, also referred to as a turbo clutch.
  • the described recording of the longitudinal belt coordinate can be used to provide an application, the application being able to be displayed by mobile devices. This makes it possible to view the measurement data and the evaluation both in a remote mode and when the user is on site. For example,
  • a targeted shutdown of the belt is made possible at a preselected point.
  • This access can also be provided by a mobile device using the application.
  • manual input of belt damage with assignment to the current belt position can also be provided.
  • the use of at least one such intelligent drum in a suitable position is advantageous in relation to the measurement of the belt pretensioning force of a belt system.
  • the provision of such a drum in the rear has proven to be advantageous.
  • Valuable additional information can be collected. Based on this data, the idler roller resistance can be determined more precisely or the lack of a customer measurement of the belt tension can be compensated for.
  • sensors can also be used to record the axle load in the bearings or the bearing contact surfaces.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Conveyors (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Structure Of Belt Conveyors (AREA)

Abstract

L'invention concerne un transporteur à courroie comprenant au moins un tambour. Le tambour (7) présente un axe de tambour (20) et un corps de tambour comprenant un revêtement de tambour et des fonds de tambour. L'axe de tambour est monté des deux côtés par l'intermédiaire de deux paliers (21). Un dispositif de mesure de force et/ou un capteur d'accélération sont agencés des deux côtés sur l'axe de tambour (20). De préférence, les capteurs agencés des deux côtés sont agencés entre le corps de tambour (22) et les paliers (21) à l'extérieur du corps de tambour (22). Les signaux de capteur peuvent être transmis sans fil au moyen d'un dispositif de télécommunication (23) associé aux capteurs.
EP19828271.7A 2019-01-24 2019-12-19 Transporteur à courroie et tambour destiné à un transporteur à courroie Pending EP3914545A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019101698.3A DE102019101698A1 (de) 2019-01-24 2019-01-24 Gurtförderer und Trommel für einen Gurtförderer
PCT/EP2019/086424 WO2020151892A1 (fr) 2019-01-24 2019-12-19 Transporteur à courroie et tambour destiné à un transporteur à courroie

Publications (1)

Publication Number Publication Date
EP3914545A1 true EP3914545A1 (fr) 2021-12-01

Family

ID=69024267

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19828271.7A Pending EP3914545A1 (fr) 2019-01-24 2019-12-19 Transporteur à courroie et tambour destiné à un transporteur à courroie

Country Status (7)

Country Link
US (1) US11840405B2 (fr)
EP (1) EP3914545A1 (fr)
CN (1) CN113329959A (fr)
CA (1) CA3127510A1 (fr)
CL (1) CL2021001907A1 (fr)
DE (1) DE102019101698A1 (fr)
WO (1) WO2020151892A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230416009A1 (en) * 2022-06-22 2023-12-28 Pablo Gonzalez Predictive maintenance system, methods, and apparatus for use with conveyor belts
CN116198945B (zh) * 2023-04-14 2023-08-25 中国矿业大学 一种皮带输送机跑偏监测并纠偏装置及方法
DE102023111575A1 (de) 2023-05-04 2024-05-08 Voith Patent Gmbh System und Energieversorgungsvorrichtung

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3276306D1 (en) * 1982-12-17 1987-06-19 Erbo Maschinenbau Erley & Bonn Device for monitoring the function of belt-supporting rollers in belt conveyors
GB2142146B (en) * 1983-06-21 1986-07-16 Coal Ind Sensing conveyor belt tension remotely
GB0107900D0 (en) * 2001-03-29 2001-05-23 Post Office Improvements in monitoring systems
US7034711B2 (en) * 2001-08-07 2006-04-25 Nsk Ltd. Wireless sensor, rolling bearing with sensor, management apparatus and monitoring system
CN2902975Y (zh) * 2006-03-31 2007-05-23 韩士权 带式输送机输送带跑偏自动校正装置
US8260574B1 (en) * 2007-12-21 2012-09-04 Dematic Corp. Diagnostic device for material handling system and method of diagnosing
CN101429873B (zh) * 2008-01-21 2011-04-13 樊铁山 利用燃气发动机直接驱动煤矿主斜井皮带输送机的方法
WO2010033527A1 (fr) 2008-09-19 2010-03-25 Fenner Dunlop Americas, Inc. Système de contrôle de l’état d’une bande transporteuse
SE536095C2 (sv) * 2010-10-25 2013-05-07 Eistec Ab Rulle för en bandtransportör innefattande sensorer för övervakning av rullens kondition
KR20130100181A (ko) * 2010-11-02 2013-09-09 라이트람, 엘엘씨 컨베이어 시스템, 벨트, 및 가속도계들을 사용하는 방법
CN102756899A (zh) * 2012-07-27 2012-10-31 江苏高盛华宇电力设备制造有限公司 一种带式输送机用无源电动纠偏装置
WO2015042661A2 (fr) 2013-09-24 2015-04-02 Vayeron Pty Ltd Rouleau, procédé pour contrôler une pluralité de rouleaux, et système de transport
AU2015100473A4 (en) * 2014-08-04 2015-05-14 Ezifix Mining Solutions Pty Ltd Conveyor roller monitoring apparatus
WO2016135642A2 (fr) 2015-02-25 2016-09-01 Geoffrey Smith Prévention contre l'incendie
US9533832B1 (en) * 2015-06-11 2017-01-03 Norman Victor Wheat Belt misalignment sensing and sensor status sensing apparatus and method of use
DE102016114524B4 (de) * 2016-08-05 2020-09-03 Interroll Holding Ag Trommelmotor mit Frequenzumrichter und optionalem Bandspannungssensor
EP3354604A1 (fr) * 2017-01-27 2018-08-01 Schott AG Rouleau, en particulier pour des transporteurs à rouleaux
PE20201327A1 (es) * 2017-12-22 2020-11-25 Flexible Steel Lacing Co Aparato y metodo para monitorear sistemas transportadores

Also Published As

Publication number Publication date
DE102019101698A1 (de) 2020-07-30
CN113329959A (zh) 2021-08-31
US11840405B2 (en) 2023-12-12
CL2021001907A1 (es) 2022-03-11
US20220048715A1 (en) 2022-02-17
WO2020151892A1 (fr) 2020-07-30
CA3127510A1 (fr) 2020-07-30

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