WO2023286791A1 - 表面形状測定装置、表面形状測定方法及びコンベアベルトの管理方法 - Google Patents
表面形状測定装置、表面形状測定方法及びコンベアベルトの管理方法 Download PDFInfo
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- WO2023286791A1 WO2023286791A1 PCT/JP2022/027476 JP2022027476W WO2023286791A1 WO 2023286791 A1 WO2023286791 A1 WO 2023286791A1 JP 2022027476 W JP2022027476 W JP 2022027476W WO 2023286791 A1 WO2023286791 A1 WO 2023286791A1
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- 238000005259 measurement Methods 0.000 title claims abstract description 63
- 238000007726 management method Methods 0.000 title claims abstract description 11
- 238000000691 measurement method Methods 0.000 title abstract description 7
- 238000004441 surface measurement Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 33
- 230000007246 mechanism Effects 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 9
- 230000005856 abnormality Effects 0.000 description 6
- 230000015654 memory Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/30—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring roughness or irregularity of surfaces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/25—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object
- G01B11/2518—Projection by scanning of the object
- G01B11/2522—Projection by scanning of the object the position of the object changing and being recorded
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/245—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures using a plurality of fixed, simultaneously operating transducers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/20—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring contours or curvatures, e.g. determining profile
Definitions
- the present disclosure relates to a surface shape measuring device, a surface shape measuring method, and a conveyor belt management method.
- the present disclosure particularly relates to a surface profile measuring device, a surface profile measuring method, and a conveyor belt management method for measuring unevenness of a conveyor belt wound around pulleys.
- a belt conveyor which has a conveyor belt wound around a pair of pulleys, is known as a conveying device that conveys raw materials.
- a conveying device that conveys raw materials.
- it is necessary to control the thickness of the conveyor belt so as not to break the conveyor belt.
- Patent Document 1 discloses a surface profile monitoring device that measures unevenness on the surface of a conveyor belt by a light cutting method using a line laser.
- Patent Document 2 discloses a wear amount measuring device that measures surface irregularities on both sides of a conveyor belt by a pair of non-contact displacement measuring means provided on both sides of the conveyor belt.
- An object of the present disclosure which has been made in view of such circumstances, is to provide a surface profile measuring device, a surface profile measuring method, and a conveyor belt management method for accurately measuring the surface profile of a conveyor belt.
- a surface shape measuring device for measuring the surface shape of a conveyor belt wound around a pulley, a pulley surface measuring device for performing a first measurement for measuring the surface shape of the pulley; a belt surface measuring device that performs a second measurement for measuring the surface shape of the conveyor belt at a portion where the conveyor belt contacts the pulley; The surface shape of the conveyor belt excluding the influence of the surface shape of the pulley, based on the surface shape information obtained by the first measurement and the surface shape information obtained by the second measurement. and a computing device that computes
- the pulley surface measuring device measures the surface shape of the pulley for each predetermined rotation angle
- the computing device reads information on the surface shape of the pulley at the corresponding rotation angle according to the rotation angle of the pulley, and computes the surface shape of the conveyor belt excluding the influence of the pulley surface shape.
- the pulley surface measuring device is a contact-type measuring device that measures the surface shape of the pulley while in contact with the pulley
- the belt surface measuring device is a non-contact measuring device that measures the surface shape of the conveyor belt in a non-contact state with the conveyor belt.
- the pulley surface measuring device is a rail member extending in the width direction of the pulley at a portion where the conveyor belt does not contact the pulley; a fixing member that fixes the rail member to the pulley; and a measuring device that measures the surface shape of the pulley while moving the rail member.
- the pulley surface measuring device measures the surface shape of a pulley that does not have a drive mechanism among a plurality of pulleys around which the conveyor belt is wound.
- a surface profile measuring method includes A surface shape measuring method executed by a surface shape measuring device for measuring the surface shape of a conveyor belt wound around a pulley, a pulley surface measuring step of performing a first measurement for measuring the surface shape of the pulley; a belt surface measuring step of performing a second measurement for measuring the surface shape of the conveyor belt at a portion where the conveyor belt contacts the pulley; The surface shape of the conveyor belt excluding the influence of the surface shape of the pulley, based on the surface shape information obtained by the first measurement and the surface shape information obtained by the second measurement. and a computing step of computing
- the pulley surface measurement step is performed while the pulley and the conveyor belt are not rotating
- the belt surface measurement step is performed while the pulleys and the conveyor belt are rotating.
- the pulley surface measuring step measures the surface shape of the pulley for each predetermined rotation angle
- the calculating step according to the rotation angle of the pulley, information on the surface shape of the pulley at the corresponding rotation angle is read, and the surface shape of the conveyor belt is calculated without the influence of the surface shape of the pulley.
- a conveyor belt management method includes: The conveyor belt is managed based on the surface shape of the conveyor belt calculated by the surface shape measuring method of any one of (6) to (8).
- FIG. 1 is a diagram showing a configuration example of a surface shape measuring apparatus according to one embodiment.
- FIG. 2 is a schematic diagram of a belt conveyor that is measured by the surface shape measuring device according to one embodiment.
- FIG. 3 is a diagram illustrating how the pulley surface shape is measured by the pulley surface measuring device.
- FIG. 4 is a diagram illustrating how the surface shape of a conveyor belt is measured by a belt surface measuring device.
- FIG. 5 is a diagram showing an example of unevenness that occurs on a pulley.
- FIG. 6 is a flow chart illustrating an example of a surface profile measurement method according to one embodiment.
- a surface profile measuring device, a surface profile measuring method, and a conveyor belt management method will be described below with reference to the drawings.
- the same reference numerals are given to the same or corresponding parts.
- the description of the same or corresponding parts will be omitted or simplified as appropriate.
- FIG. 1 shows a configuration example of a surface shape measuring apparatus 10 according to this embodiment.
- FIG. 2 is a schematic diagram of the belt conveyor 1 measured by the surface shape measuring device 10.
- the surface profile measuring device 10 measures the surface profile of a conveyor belt 30 (see FIG. 2) wound around a pulley 20 (see FIG. 2).
- the surface shape is a shape including unevenness on the surface.
- a recessed portion of the surface of the conveyor belt 30 may indicate that the thickness of the conveyor belt 30 is thinner than the periphery.
- the surface shape measuring device 10 has a pulley surface measuring device 11, a belt surface measuring device 12, and an arithmetic device 13.
- the pulley surface measuring device 11 has a rail member 111 , a fixing member 112 and a measuring device 113 .
- the surface profile measuring device 10 is a device that measures the surface profile of the conveyor belt 30 by operating a pulley surface measuring device 11, a belt surface measuring device 12, and an arithmetic device 13 in cooperation with each other.
- the pulley surface measuring device 11, the belt surface measuring device 12, and the arithmetic device 13 are connected by a network such as a LAN (Local Area Network), and can transmit and receive information (measurement data) obtained by measurement. can be The details of the constituent elements of the surface shape measuring apparatus 10 will be described later.
- LAN Local Area Network
- the conveyor belt 30, which is the object to be measured by the surface shape measuring device 10, is wound around a pair of pulleys 20.
- the conveyor belt 30 moves and can move the conveyed goods placed on the surface 31 .
- the surface 31 of the conveyor belt 30 is the surface (outer surface) opposite to the pulley 20 side surface (inner surface) of the conveyor belt 30 .
- Surface 21 of pulley 20 is the cylindrical surface of pulley 20 which is cylindrical.
- a center 22 indicates the center of rotation of the pulley 20 .
- a region A2 indicates a portion where the conveyor belt 30 contacts the pulley 20.
- Area A1 is a portion where conveyor belt 30 does not contact pulley 20 .
- a pulley surface measuring device 11 measures the surface shape of the pulley 20 .
- the measurement of the surface shape of the pulley 20 by the pulley surface measuring device 11 is also called "first measurement".
- the pulley surface measuring device 11 is a contact-type measuring device that measures the surface shape of the pulley 20 while it is in contact with the pulley 20 .
- the pulley surface measuring device 11 performs the first measurement while the pulley 20 and the conveyor belt 30 are not rotating.
- the pulley surface measuring device 11 has the rail member 111, the fixing member 112, and the measuring device 113.
- the rail member 111 is a rail-shaped member extending in the width direction of the pulley 20 .
- the width direction is a direction parallel to the rotation axis of the pulley 20 .
- the rail member 111 is arranged in the area A1 in FIG.
- the fixing member 112 is a member that fixes the rail member 111 to the pulley 20 .
- the measuring device 113 is a device that measures the surface shape of the pulley 20 while moving the rail member 111 .
- FIG. 3 is a diagram illustrating how the surface shape of the pulley 20 is measured by the pulley surface measuring device 11.
- the measuring device 113 measures the surface shape while traveling (scanning) along the width direction of the pulley 20 on the rail member 111 extending in the width direction of the pulley 20 .
- the fixing member 112 is, for example, a pair of clamp mechanisms, and fixes the rail member 111 by clamping left and right edge portions of the pulley 20 .
- the fixing member 112 is not limited to a clamp mechanism as long as it can fix the rail member 111 to the pulley 20 .
- the measuring device 113 is a device that measures the distance of one point, and may be, for example, a contact rangefinder, but is not limited to this.
- the pulley surface measuring device 11 may further include an encoder or a laser rangefinder for measuring the distance from the end of the rail member 111 to measure the position of the measuring device 113 on the rail member 111 . In this way, the pulley surface measuring device 11 can obtain information on the surface shape of the pulley 20 including unevenness by performing the first measurement.
- the pulley surface measuring device 11 has a structure in which a rail member 111 is fixed to the pulley 20 itself by a fixing member 112 and a contact-type measuring device 113 moves on the rail member 111 .
- the size can be reduced, and the surface shape of the pulley 20 can be measured with high accuracy in a narrow space inside the conveyor belt 30 .
- the conveyor belt 30 is wound around a plurality of pulleys 20, but the surface shape of one of the plurality of pulleys 20 may be measured.
- one of the pair of pulleys 20 may have a drive mechanism (for example, a motor) and the other may not have a drive mechanism.
- the space around the pulley 20 without the drive mechanism is often larger than the space around the pulley 20 with the drive mechanism. Therefore, from the viewpoint of ease of installation, the pulley surface measuring device 11 preferably measures the surface shape of the pulley 20 that does not have a drive mechanism among the plurality of pulleys 20 around which the conveyor belt 30 is wound.
- the measuring device 113 of the pulley surface measuring device 11 may be a non-contact device such as a laser beam cutting method. Further, the pulley surface measuring apparatus 11 may be configured to measure the entire widthwise length of the pulley 20 at one time with a device extending over the widthwise length of the pulley 20 instead of the configuration that scans the measuring device 113 . Further, the pulley surface measuring device 11 may have a configuration in which the rail member 111 is held near the surface of the pulley 20 using a stand installed on the ground instead of the configuration in which the rail member 111 is fixed to the pulley 20.
- the belt surface measuring device 12 measures the surface shape of the conveyor belt 30 .
- the measurement of the surface profile of the conveyor belt 30 by the belt surface measuring device 12 is also called "second measurement".
- the belt surface measuring device 12 is a non-contact measuring device that measures the surface shape of the conveyor belt 30 in a non-contact state.
- Belt surface measurement device 12 makes a second measurement while pulley 20 and conveyor belt 30 are rotating.
- FIG. 4 is a diagram illustrating how the surface shape of the conveyor belt 30 is measured by the belt surface measuring device 12.
- the belt surface measuring device 12 is, for example, a laser light-cutting type device such as a light-cutting shape meter.
- the belt surface measuring device 12 can measure the surface shape of the entire length of the conveyor belt 30 in the width direction by irradiating the conveyor belt 30 with a laser beam.
- the belt surface measuring device 12 is provided at a position where it can irradiate the conveyor belt 30 with laser light from obliquely above the pulley 20 .
- the surface shape of the conveyor belt 30 can be measured at the portion where the conveyor belt 30 contacts the pulley 20 (area A2 in FIG. 2).
- the belt surface measuring device 12 may be configured to be held near the pulley 20 by a holding member 40 installed on the ground.
- the belt surface measuring device 12 is installed so that the irradiation direction of the laser light passes through the center 22 of the pulley 20 . Since the belt surface measuring device 12 measures the surface shape of the conveyor belt 30 in the area A2 in FIG. 2, the conveyor belt 30 can be measured in a stable posture without shaking up and down. In this way, the belt surface measuring device 12 can perform the second measurement to obtain information about the surface shape of the conveyor belt 30, including unevenness.
- the surface shape information of the second measurement is surface shape information including not only the conveyor belt 30 but also the pulleys 20 .
- the belt surface measuring device 12 can also use a device that does not use a laser beam cutting method. However, since the belt surface measuring device 12 measures the surface shape of the conveyor belt 30 while the conveyor belt 30 is rotating, the belt surface measuring device 12 is preferably a non-contact type measuring device that can measure the conveyor belt 30 in a non-contact state.
- the computing device 13 computes the surface shape of only the conveyor belt 30 based on the surface shape information obtained by the first measurement and the surface shape information obtained by the second measurement.
- a first measurement by the pulley surface measuring device 11 provides information on the surface shape of the pulley 20 .
- information on the surface shape including not only the conveyor belt 30 but also the pulley 20 is obtained.
- the computing device 13 compares the surface shape information obtained by the first measurement with the surface shape information obtained by the second measurement, and removes the influence of the surface shape of the pulleys 20 from the conveyor belt 30. Calculate the surface shape of only.
- the calculation performed by the calculation device 13 includes, for example, subtracting the surface shape information obtained in the first measurement from the surface shape information obtained in the second measurement. Further, the calculations executed by the calculation device 13 are, in the above subtraction, the position (coordinates) in the surface shape obtained by the first measurement, the position (coordinates) in the surface shape obtained by the second measurement, contains operations to match
- the arithmetic device 13 may be configured with a processor that executes arithmetic operations and a storage unit that stores data used in the arithmetic operations (for example, surface shape information).
- the computing device 13 may be, for example, a computer.
- the processor is, for example, a general-purpose processor or a dedicated processor specialized for specific processing, but is not limited to these and can be any processor.
- a storage unit is one or more memories.
- the memory is, for example, a semiconductor memory, a magnetic memory, an optical memory, or the like, but is not limited to these and can be any memory.
- FIG. 5 is a diagram showing an example of unevenness that occurs on the pulley 20.
- the pulley 20 is dented mainly by wear. Regarding the dent due to wear, the dent in the width direction measured by stopping the pulley 20 at a certain rotation angle is the same as the dent in the width direction measured by stopping the pulley 20 at another rotation angle. In other words, the surface shape in the width direction (unevenness due to wear) can be treated as the same over the entire circumference (whole in the circumferential direction) of the pulley 20 .
- the computing device 13 uses the surface shape information obtained in the first measurement as the width direction (one scan along the width direction) measured by stopping the pulley 20 at a certain rotation angle. Measurement data are acquired and applied to the entire circumference of the pulley 20 .
- the calculation device 13 accurately calculates the surface shape of only the conveyor belt 30 excluding the influence of the surface shape of the pulley 20, and applies the measurement data of one scan to the entire circumference of the pulley 20, thereby improving the calculation. It is possible to reduce the load.
- FIG. 6 is a flow chart showing an example of a surface shape measuring method executed by the surface shape measuring apparatus 10 according to this embodiment.
- the surface shape measuring device 10 waits while the pulley 20 and the conveyor belt 30 are rotating (No in step S1). If the pulley 20 and the conveyor belt 30 are not rotating (Yes in step S1), the surface shape measuring device 10 installs the pulley surface measuring device 11 and performs the first measurement (step S2). In the first measurement, the surface shape measuring apparatus 10 scans the measuring device 113 to measure the surface shape in the width direction of the pulley 20 stopped at a predetermined rotation angle. Information on the surface shape of the pulley 20 obtained by the first measurement may be output from the pulley surface measuring device 11 to the arithmetic device 13 and stored in the arithmetic device 13 .
- step S2 corresponds to the pulley surface measurement step.
- the surface shape measuring device 10 waits if the pulley 20 and the conveyor belt 30 are not rotating (No in step S3). If the pulley 20 and the conveyor belt 30 are rotating (Yes in step S3), the surface shape measuring device 10 performs the second measurement using the belt surface measuring device 12 (step S4). In the second measurement, the surface shape measuring device 10 measures the surface shape of the conveyor belt 30 in the width direction over the entire length of the conveyor belt 30 in the conveying direction. Information on the surface shape of the conveyor belt 30 obtained in the second measurement (including the influence of the surface shape of the pulley 20) is output from the belt surface measuring device 12 to the arithmetic device 13 and stored in the arithmetic device 13. good.
- step S4 corresponds to the belt surface measurement step.
- the computing device 13 of the surface shape measuring device 10 uses the stored surface shape information to compute the surface shape of only the conveyor belt 30 (step S5).
- step S5 corresponds to the calculation step.
- the arithmetic unit 13 displays the surface shape of only the conveyor belt 30, for example, on an external display device (a display as an example), so that the operation manager of the belt conveyor 1 can prevent the conveyor belt 30 from breaking. 30 thickness may be made manageable.
- the external display device may be a device provided in a process computer that manages operating machines including the belt conveyor 1 .
- the conveyor belt 30 can be managed (monitored) based on the calculated surface shape of the conveyor belt 30 .
- the surface profile measuring device 10 determines whether the thickness of the conveyor belt 30 is sufficient, for example, based on the calculated surface profile of the conveyor belt 30 . When determining that the thickness is not sufficient, the surface shape measuring device 10 can notify the operator of the abnormality of the conveyor belt 30 or stop the belt conveyor 1 . For example, the surface profile measuring device 10 may notify the abnormality to a display device or an audio output device (such as a speaker) provided in a process computer that manages the operating machine.
- the process computer when the process computer acquires a signal requesting notification of abnormality from the surface shape measuring apparatus 10, the process computer may not only notify the abnormality but also stop the belt conveyor 1.
- FIG. In this way, by managing the conveyor belt 30 based on the calculated surface shape of the conveyor belt 30, it is possible to accurately detect an abnormality of the conveyor belt 30, and it is possible to respond to the abnormality at an early stage. become.
- the surface profile measuring device 10 and the surface profile measuring method according to the present embodiment can accurately measure the surface profile of the conveyor belt 30 by the above configuration and steps.
- the surface shape measuring apparatus 10 according to this embodiment has a pulley surface measuring apparatus 11 including a rail member 111 , a fixing member 112 and a measuring device 113 .
- the size of the pulley surface measuring device 11 can be reduced, and the surface shape of the pulley 20 can be measured with high accuracy in a narrow space inside the conveyor belt 30 .
- the pulley surface measuring device 11 can be installed on various types of belt conveyors 1 having different configurations.
- the belt management method according to the present embodiment enables the thickness of the conveyor belt 30 to be determined accurately, and the conveyor belt 30 to be managed so as not to break.
- the calculation unit 13 uses the surface shape information obtained in the first measurement in the width direction (one scan along the width direction) measured by stopping the pulley 20 at a certain rotation angle. is applied to the entire circumference of the pulley 20.
- the surface shape of the pulley 20 may differ in the rotational direction (circumferential direction).
- the surface shape measuring apparatus 10 and the surface shape measuring method according to the second embodiment accurately measure the surface shape of only the conveyor belt 30 even when the surface shape of the pulley 20 is partially different. can do. In order to avoid duplication of explanation, configurations and processes different from those of the first embodiment will be explained below.
- the surface shape of the pulley 20 is measured for each predetermined rotation angle. Specifically, the pulley 20 is rotated, and the rail member 111 is fixed to the pulley 20 each time the rotation angle is changed, and the measurement is performed a plurality of times.
- the rotation angle of the pulley 20 with respect to the reference position is measured by, for example, an encoder attached to the rotation shaft of the pulley 20 .
- the surface shape information of the pulley 20 obtained by the first measurement is associated with the rotation angle of the pulley 20 and the surface shape information in the width direction.
- the first measurement modified as described above is also performed in the pulley surface measurement step (see step S2 in FIG. 6) of the surface profile measurement method.
- the arithmetic unit 13 reads the surface shape information of the pulley 20 at the corresponding rotation angle, and determines the influence of the surface shape of the pulley 20.
- the surface shape of the removed conveyor belt 30 is calculated.
- the calculation process (see step S5 in FIG. 6) of the surface profile measurement method is also performed using surface profile information corresponding to the rotation angle.
- a portion in contact with the reference position of the pulley 20 may be set as the reference position.
- Positional correspondence between the rotation direction of the pulley 20 and the conveying direction of the conveyor belt 30 is performed by such a reference position setting method or another known method.
- the surface shape measuring apparatus 10 and the surface shape measuring method according to the present embodiment can be used even when there is local deformation such as a scratch on the surface of the pulley 20 due to the above configuration and steps. It is possible to remove the effect of Therefore, the surface shape measuring apparatus 10 and the surface shape measuring method according to the present embodiment can measure the surface shape of only the conveyor belt 30 with higher accuracy.
- the calculations executed by the calculation device 13 include calculations for subtraction and matching positions (coordinates).
- the computation executed by the computation device 13 may include exception processing. For example, if a groove exists on the surface of the pulley 20 for the purpose of preventing slippage with the conveyor belt 30, the computing device 13 obtains information on the surface shape of the portion where the groove exists, based on the information on the measured position. , or adjust the value to cancel out the groove. Further, for example, when there is a joint in the conveyor belt 30, the arithmetic device 13 excludes information on the surface shape of the portion where the joint exists, based on the information on the measured position, or sets a value to cancel the joint. may be adjusted.
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Abstract
Description
プーリーに巻き掛けられたコンベアベルトの表面形状を測定する表面形状測定装置であって、
前記プーリーの表面形状を測定する第1の測定を行うプーリー表面測定装置と、
前記コンベアベルトが前記プーリーに接する部分において、前記コンベアベルトの表面形状を測定する第2の測定を行うベルト表面測定装置と、
前記第1の測定で得られた表面形状の情報と、前記第2の測定で得られた表面形状の情報と、に基づいて、前記プーリーの表面形状の影響を除いた前記コンベアベルトの表面形状を演算する演算装置と、を有する。
前記プーリー表面測定装置は、所定の回転角毎に前記プーリーの表面形状を測定し、
前記演算装置は、前記プーリーの回転角に応じて、対応する回転角における前記プーリーの表面形状の情報を読込んで、前記プーリーの表面形状の影響を除いた前記コンベアベルトの表面形状を演算する。
前記プーリー表面測定装置は、前記プーリーに接触した状態で前記プーリーの表面形状を測定する接触式測定装置であり、
前記ベルト表面測定装置は、前記コンベアベルトに非接触の状態で前記コンベアベルトの表面形状を測定する非接触式測定装置である。
前記プーリー表面測定装置は、
前記コンベアベルトが前記プーリーに接しない部分において、前記プーリーの幅方向に延びるレール部材と、
前記レール部材を前記プーリーに固定する固定部材と、
前記レール部材を移動しながら、前記プーリーの表面形状を測定する測定機器と、を有する。
前記プーリー表面測定装置は、前記コンベアベルトを巻き掛ける複数のプーリーのうち駆動機構を備えないプーリーの表面形状を測定する。
プーリーに巻き掛けられたコンベアベルトの表面形状を測定する表面形状測定装置が実行する表面形状測定方法であって、
前記プーリーの表面形状を測定する第1の測定を行うプーリー表面測定工程と、
前記コンベアベルトが前記プーリーに接する部分において、前記コンベアベルトの表面形状を測定する第2の測定を行うベルト表面測定工程と、
前記第1の測定で得られた表面形状の情報と、前記第2の測定で得られた表面形状の情報と、に基づいて、前記プーリーの表面形状の影響を除いた前記コンベアベルトの表面形状を演算する演算工程と、を有する。
前記プーリー表面測定工程は、前記プーリー及び前記コンベアベルトの回転停止中に実行され、
前記ベルト表面測定工程は、前記プーリー及び前記コンベアベルトの回転中に実行される。
前記プーリー表面測定工程は、所定の回転角毎に前記プーリーの表面形状を測定し、
前記演算工程は、前記プーリーの回転角に応じて、対応する回転角における前記プーリーの表面形状の情報を読込んで、前記プーリーの表面形状の影響を除いた前記コンベアベルトの表面形状を演算する。
(6)から(8)のいずれかの表面形状測定方法によって演算された前記コンベアベルトの表面形状に基づいて、前記コンベアベルトを管理する。
<表面形状測定装置>
図1は、本実施形態に係る表面形状測定装置10の構成例を示す。図2は、表面形状測定装置10によって測定されるベルトコンベア1の模式図である。表面形状測定装置10は、プーリー20(図2参照)に巻き掛けられたコンベアベルト30(図2参照)の表面形状を測定する。ベルトコンベア1では、コンベアベルト30が破断しないようにコンベアベルト30の厚さを管理する必要がある。表面形状測定装置10によって測定される表面形状によって、コンベアベルト30の厚さを演算して、管理することが可能である。ここで、表面形状とは、表面の凹凸を含む形状である。例えば、コンベアベルト30の表面において周囲より凹んだ部分は、コンベアベルト30の厚さが周囲より薄いことを示し得る。
プーリー表面測定装置11は、プーリー20の表面形状を測定する。プーリー表面測定装置11によるプーリー20の表面形状の測定は「第1の測定」とも称される。本実施形態において、プーリー表面測定装置11は、プーリー20に接触した状態でプーリー20の表面形状を測定する接触式測定装置である。本実施形態において、プーリー表面測定装置11は、プーリー20及びコンベアベルト30の回転停止中に、第1の測定を行う。
ベルト表面測定装置12は、コンベアベルト30の表面形状を測定する。ベルト表面測定装置12によるコンベアベルト30の表面形状の測定は「第2の測定」とも称される。本実施形態において、ベルト表面測定装置12は、コンベアベルト30に非接触の状態でコンベアベルト30の表面形状を測定する非接触式測定装置である。ベルト表面測定装置12は、プーリー20及びコンベアベルト30の回転中に、第2の測定を行う。
演算装置13は、第1の測定で得られた表面形状の情報と、第2の測定で得られた表面形状の情報と、に基づいて、コンベアベルト30のみの表面形状を演算する。プーリー表面測定装置11による第1の測定では、プーリー20の表面形状の情報が得られる。また、ベルト表面測定装置12による第2の測定では、コンベアベルト30だけでなくプーリー20も含んだ表面形状の情報が得られる。演算装置13は、第1の測定で得られた表面形状の情報と、第2の測定で得られた表面形状の情報と、を比較し、プーリー20の表面形状の影響を除いたコンベアベルト30のみの表面形状を算出する。ここで、演算装置13が実行する演算は、例えば第2の測定で得られた表面形状の情報から第1の測定で得られた表面形状の情報を減算することを含む。また、演算装置13が実行する演算は、上記の減算において、第1の測定で得られた表面形状における位置(座標)と、第2の測定で得られた表面形状における位置(座標)と、を合わせるための演算を含む。
図6は、本実施形態に係る表面形状測定装置10が実行する表面形状測定方法の例を示すフローチャートである。
上記の表面形状測定方法を用いて、演算したコンベアベルト30の表面形状に基づいてコンベアベルト30を管理(監視)することができる。表面形状測定装置10は、例えば演算したコンベアベルト30の表面形状に基づいて、コンベアベルト30の厚さが十分か否かを判定する。表面形状測定装置10は、厚さが十分ではないと判定する場合に、作業者に対してコンベアベルト30の異常を報知したり、ベルトコンベア1を停止させたりすることができる。例えば表面形状測定装置10は、操業用機械を管理するプロセスコンピュータが備える表示装置又は音声出力装置(スピーカーなど)に異常を報知させてよい。また、例えばプロセスコンピュータは、表面形状測定装置10から異常の報知を要求する信号を取得した場合に、異常を報知するだけでなく、ベルトコンベア1を停止させてよい。このように、演算したコンベアベルト30の表面形状に基づいてコンベアベルト30を管理することで、コンベアベルト30の異常を精度よく検知することが可能となり、異常に対して早期に対応することが可能になる。
第1実施形態において、演算装置13は、第1の測定で得られた表面形状の情報として、プーリー20をある回転角で停止させて測定した幅方向(幅方向に沿った1回の走査)の測定データをプーリー20の全周に適用する。ここで、プーリー20の表面が部分的に損傷している場合などに、プーリー20の表面形状が回転方向(円周方向)に異なる可能性がある。第2実施形態に係る表面形状測定装置10及び表面形状測定方法は、以下に説明するように、部分的にプーリー20の表面形状が異なる場合にも、コンベアベルト30のみの表面形状を精度よく測定することができる。重複説明を回避するため、第1実施形態と異なる構成及び工程が以下に説明される。
10 表面形状測定装置
11 プーリー表面測定装置
12 ベルト表面測定装置
13 演算装置
20 プーリー
21 プーリーの表面
22 中心
30 コンベアベルト
31 コンベアベルトの表面
40 保持部材
111 レール部材
112 固定部材
113 測定機器
Claims (9)
- プーリーに巻き掛けられたコンベアベルトの表面形状を測定する表面形状測定装置であって、
前記プーリーの表面形状を測定する第1の測定を行うプーリー表面測定装置と、
前記コンベアベルトが前記プーリーに接する部分において、前記コンベアベルトの表面形状を測定する第2の測定を行うベルト表面測定装置と、
前記第1の測定で得られた表面形状の情報と、前記第2の測定で得られた表面形状の情報と、に基づいて、前記プーリーの表面形状の影響を除いた前記コンベアベルトの表面形状を演算する演算装置と、を有する、表面形状測定装置。 - 前記プーリー表面測定装置は、所定の回転角毎に前記プーリーの表面形状を測定し、
前記演算装置は、前記プーリーの回転角に応じて、対応する回転角における前記プーリーの表面形状の情報を読込んで、前記プーリーの表面形状の影響を除いた前記コンベアベルトの表面形状を演算する、請求項1に記載の表面形状測定装置。 - 前記プーリー表面測定装置は、前記プーリーに接触した状態で前記プーリーの表面形状を測定する接触式測定装置であり、
前記ベルト表面測定装置は、前記コンベアベルトに非接触の状態で前記コンベアベルトの表面形状を測定する非接触式測定装置である、請求項1又は2に記載の表面形状測定装置。 - 前記プーリー表面測定装置は、
前記コンベアベルトが前記プーリーに接しない部分において、前記プーリーの幅方向に延びるレール部材と、
前記レール部材を前記プーリーに固定する固定部材と、
前記レール部材を移動しながら、前記プーリーの表面形状を測定する測定機器と、を有する、請求項3に記載の表面形状測定装置。 - 前記プーリー表面測定装置は、前記コンベアベルトを巻き掛ける複数のプーリーのうち駆動機構を備えないプーリーの表面形状を測定する、請求項1から4のいずれか一項に記載の表面形状測定装置。
- プーリーに巻き掛けられたコンベアベルトの表面形状を測定する表面形状測定装置が実行する表面形状測定方法であって、
前記プーリーの表面形状を測定する第1の測定を行うプーリー表面測定工程と、
前記コンベアベルトが前記プーリーに接する部分において、前記コンベアベルトの表面形状を測定する第2の測定を行うベルト表面測定工程と、
前記第1の測定で得られた表面形状の情報と、前記第2の測定で得られた表面形状の情報と、に基づいて、前記プーリーの表面形状の影響を除いた前記コンベアベルトの表面形状を演算する演算工程と、を有する、表面形状測定方法。 - 前記プーリー表面測定工程は、前記プーリー及び前記コンベアベルトの回転停止中に実行され、
前記ベルト表面測定工程は、前記プーリー及び前記コンベアベルトの回転中に実行される、請求項6に記載の表面形状測定方法。 - 前記プーリー表面測定工程は、所定の回転角毎に前記プーリーの表面形状を測定し、
前記演算工程は、前記プーリーの回転角に応じて、対応する回転角における前記プーリーの表面形状の情報を読込んで、前記プーリーの表面形状の影響を除いた前記コンベアベルトの表面形状を演算する、請求項6又は7に記載の表面形状測定方法。 - 請求項6から8のいずれか一項に記載の表面形状測定方法によって演算された前記コンベアベルトの表面形状に基づいて、前記コンベアベルトを管理する、コンベアベルトの管理方法。
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JPH01193604A (ja) * | 1988-01-28 | 1989-08-03 | Dainippon Printing Co Ltd | フイルム状物体の厚み測定装置 |
JP2006132942A (ja) * | 2004-11-02 | 2006-05-25 | Toyota Motor Corp | ベルト表面の変形検査装置 |
JP2012112918A (ja) * | 2010-11-29 | 2012-06-14 | Nogata Tetsuro | ロール変位測定方法、及びそれを用いたロール変位測定装置、並びにフィルム厚測定方法、及びそれを用いたフィルム厚測定装置 |
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JPH01193604A (ja) * | 1988-01-28 | 1989-08-03 | Dainippon Printing Co Ltd | フイルム状物体の厚み測定装置 |
JP2006132942A (ja) * | 2004-11-02 | 2006-05-25 | Toyota Motor Corp | ベルト表面の変形検査装置 |
JP2012112918A (ja) * | 2010-11-29 | 2012-06-14 | Nogata Tetsuro | ロール変位測定方法、及びそれを用いたロール変位測定装置、並びにフィルム厚測定方法、及びそれを用いたフィルム厚測定装置 |
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