JP6429195B2 - Abnormality diagnosis apparatus for passenger conveyor and abnormality diagnosis method for passenger conveyor - Google Patents

Description

  The present invention relates to a passenger conveyor abnormality diagnosis device and a passenger conveyor abnormality diagnosis method for diagnosing abnormality of a step roller of a passenger conveyor in an initial stage.

  The steps of the passenger conveyor are provided with a total of four rollers, two drive rollers and two follow rollers, and run on the rails by these four step rollers. When the step rollers of the passenger conveyor deteriorate, vibration and noise are generated, and the ride quality is lowered. In the worst case, the roller falls. At present, the maintenance of the roller is diagnosed by listening to the sound during operation.

  However, since such a diagnosis method relies on experience, there is a difference depending on the skill level of maintenance personnel. Further, even if the general location where the sound is generated is known, it is difficult to determine the abnormal roller that needs to be replaced at a pinpoint.

  Therefore, as a method for quantitatively diagnosing passenger conveyor abnormalities regardless of individual differences, a sound detection device and a step forming body are provided on the rail, and the sound when passing through the normal sound stored in advance. A conventional technique for diagnosing whether or not an abnormality has occurred in a step by comparing the above is disclosed (for example, see Patent Document 1).

JP 2006-151621 A

However, the prior art has the following problems.
Experience has shown that deterioration of step rollers proceeds in the order of vibration, noise and drop. For this reason, the conventional method using the acoustic detection device has a problem that although the noise generation at the second stage can be detected, the abnormal roller at the initial stage where no sound is generated cannot be detected.

  The present invention has been made to solve the above-described problems, and provides a passenger conveyor abnormality diagnosis device and a passenger conveyor abnormality diagnosis method capable of detecting an abnormal roller in an initial stage where no sound is generated. With the goal.

  The apparatus for diagnosing abnormality of a passenger conveyor according to the present invention is measured by an acceleration sensor that measures a vibration amount of a rail that a step roller attached to a step of the passenger conveyor travels, and an acceleration sensor while the step is traveling at a constant speed. Based on the change over time of vibration amount, the section where the vibration amount exceeding the preset threshold is continuously measured for the preset duration or longer is extracted as the abnormal vibration section and corresponds to the peak vibration amount in the abnormal vibration section And a controller for identifying the abnormal roller from the time to perform.

  A passenger conveyor abnormality diagnosis method according to the present invention is a passenger conveyor abnormality diagnosis method for determining a deterioration state of a step roller attached to a step of the passenger conveyor from a vibration state of the step roller. The data acquisition step for acquiring the time-dependent change data of the vibration amount by reading the output from the acceleration sensor attached to the rail on which the roller for traveling travels during constant speed travel, and the vibration amount acquired by the data acquisition step When there is a section in which the vibration amount exceeding the preset threshold value continues for a preset duration or more in the time-dependent change data, the section extraction step for extracting as an abnormal vibration section and the section extraction step are used. An abnormal roller specifying step for specifying an abnormal roller from the time corresponding to the peak vibration amount in the abnormal vibration section. It is intended to.

  According to the present invention, based on the measurement result of the vibration waveform of the step during constant speed traveling, the portion where the vibration that deviates from the allowable range continues for the determination time or more is detected as the abnormal vibration section, and the vibration in the abnormal vibration section is detected. The controller is configured to identify the abnormal roller from the peak time. As a result, it is possible to obtain a passenger conveyor abnormality diagnosis device and a passenger conveyor abnormality diagnosis method capable of detecting an abnormal roller in an initial stage where no sound is generated.

It is a side view which shows the whole normal passenger conveyor. It is a side view of a step. It is the schematic at the time of installing the abnormality diagnosis apparatus of the passenger conveyor in Embodiment 1 of this invention in a rail. It is the figure which showed the layout of the roller for steps, and the abnormality diagnosis apparatus when it sees from the AA line direction of FIG. 3 in Embodiment 1 of this invention. It is a flowchart of the abnormal roller discrimination | determination operation | movement performed by the controller in Embodiment 1 of this invention. It is a conceptual diagram of the abnormal roller discrimination operation based on the vibration waveform in the first embodiment of the present invention. It is a conceptual diagram of the abnormal roller position corresponding to the vibration waveform of previous FIG. 6 in Embodiment 1 of this invention. It is a block diagram of the abnormality diagnosis apparatus of the passenger conveyor in Embodiment 2 of this invention. It is a flowchart of discrimination | determination operation | movement of the abnormal roller performed with the controller in Embodiment 2 of this invention. It is a block diagram of the abnormality diagnosis apparatus of the passenger conveyor in Embodiment 3 of this invention. It is the figure which showed the example of arrangement | positioning of the 1st abnormality diagnostic apparatus and 2nd abnormality diagnostic apparatus in Embodiment 3 of this invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a passenger conveyor abnormality diagnosis device and a passenger conveyor abnormality diagnosis method of the present invention will be described with reference to the drawings.

Embodiment 1 FIG.
First, the structure of the steps to be diagnosed according to the present invention will be described. FIG. 1 is a side view showing an entire ordinary passenger conveyor 1. In FIG. 1, the rail 3 of the passenger conveyor 1 includes an outward drive rail 3A, an outward follow-up rail 3B, a return drive rail 3C, and a return follow-up rail 3D, one on each side.

  FIG. 2 is a side view of the step 2. In FIG. 2, the step 2 of the passenger conveyor 1 is provided with four driving rollers 4 </ b> A and one follower roller 4 </ b> B, one on each of the right and left, for a total of four step rollers 4. doing.

  When the passenger roller step rollers 4 are deteriorated, vibration and noise are generated, and the ride quality is lowered. For this reason, periodic inspections are performed by maintenance personnel. The step rollers 4 determined to be abnormal by inspection are replaced by maintenance personnel in the machine room 6 in the lower part of FIG.

  FIG. 3 is a schematic view when the abnormality diagnosis device 10 for the passenger conveyor 1 according to Embodiment 1 of the present invention is installed on the rail 3. FIG. 4 is a diagram showing a layout of the step roller 4 and the abnormality diagnosis device 10 when viewed from the AA line direction of FIG. 3 in the first embodiment of the present invention.

  The abnormality diagnosis device 10 for the passenger conveyor 1 according to the first embodiment includes an acceleration sensor 11 that measures vibration of the rail 3, a controller 12 that determines an abnormal roller based on the value of the acceleration sensor 11, and a controller 12 It comprises a marking device 13 for marking an abnormal roller in response to an instruction, and an alarm device 14 for notifying maintenance personnel that there was an abnormal roller.

  As shown in FIG. 4, the abnormality diagnosis device 10 is housed in a housing 100, and the housing 100 is fixed to the rail 3 by a magnet 7.

  The marking device 13 may be any spraying device that sprays paint, one that presses a roller containing paint, one that attaches a seal, etc., as long as it can easily identify an abnormal roller only by visual inspection by maintenance personnel. Such a structure may be used.

  The abnormality diagnosis apparatus 10 according to the first embodiment can be installed on the forward drive rail 3A or the forward tracking rail 3B that can be accessed during inspection. The rail 3 is fixed to the longitudinal beam 8 of the truss every certain length.

  The abnormality diagnosis device 10 can be installed at an arbitrary position on the rail 3. However, since the center of the two vertical beams 8 becomes an antinode of the amplitude and the vibration becomes the largest, it is desirable to install in the center of the two vertical beams 8.

  Next, the abnormal roller discrimination operation by the controller 12 will be described. FIG. 5 is a flowchart of the abnormal roller discrimination operation executed by the controller 12 according to the first embodiment of the present invention.

  The operation of discriminating abnormal rollers by the controller 12 is broadly divided into two types: measurement diagnosis operation and marking operation. The controller 12 performs a measurement diagnosis operation from step S001 to step S006, and performs a marking operation from step S007 to step S010.

  First, after the abnormality diagnosis device 10 is installed on the rail 3, the constant speed operation of the passenger conveyor 1 is started. Then, the controller 12 counts time in the first step S001, and measures the vibration by the acceleration sensor 11 in step S002. Further, the controller 12 confirms whether or not the step 2 has made one turn in step S003.

  Since the step 2 moves at a constant speed and the number of the step 2 is known in advance, the time required for one lap is also known. Therefore, in step S003, the controller 12 determines whether or not the step 2 has made one turn by measuring the time required for one turn.

  The controller 12 repeats the processing of step S001 and step S002 until the step 2 makes one turn, and stores the vibration amount temporal change data in which the measurement time is associated with the vibration data as a vibration waveform. If the controller 12 determines in step S003 that the step 2 has made one revolution, the controller 12 proceeds to the next step S004.

  In step S004, the controller 12 compares the stored vibration waveform for one round with a preset threshold value, and determines an abnormal vibration section. In the diagnosis of the step roller 4, a plurality of step rollers 4 travel on the rail 3. For this reason, the vibration of the adjacent rail 3 is transmitted, and the vibration is generated before and after the passage of the abnormal roller. Therefore, it is important to accurately determine which step roller 4 has an abnormality.

  Therefore, a method for determining the step roller 4 in which an abnormality has occurred, executed by the controller 12 in the first embodiment, will be described in detail with reference to FIGS. FIG. 6 is a conceptual diagram of the abnormal roller discrimination operation based on the vibration waveform in the first embodiment of the present invention. FIG. 7 is a conceptual diagram of an abnormal roller position corresponding to the vibration waveform of FIG. 6 in the first embodiment of the present invention.

  As shown in FIGS. 6 and 7, when the abnormal roller travels on the rail 3 of the passenger conveyor 1, the vibration of the adjacent rail 3 is transmitted. For this reason, for example, if the position where the abnormality diagnosis device 10 is installed is (b), after the passage from the position (a) before the abnormal roller passes (b) next to the abnormality diagnosis device 10 In the section up to the position (c), vibration waveforms exceeding the threshold are continuously measured.

  Therefore, in step S004, the controller 12 reversely utilizes such a characteristic that a large vibration is continuously detected to determine the abnormal roller. That is, the controller 12 compares the vibration waveform with a preset threshold value, and determines that the abnormal roller has passed when a vibration waveform exceeding the threshold value is continuously detected over a preset duration. To do.

  If all the rollers are determined to be abnormal rollers when the threshold value is exceeded, in the case of FIG. 7, all the sections in the positions (a) to (c) are determined to be abnormal rollers, and other step rollers 4 are also detected. This results in marking. Therefore, in step S004, the controller 12 determines that the sections (a) to (c) are abnormal vibration sections, and specifies abnormal rollers in the subsequent steps.

  The controller 12 also confirms the continuity of the vibration waveform exceeding the threshold, so that the vibration waveform that exceeds the threshold for a moment due to noise is an abnormal vibration section, as shown by (d) in FIG. As a result, it is possible to prevent erroneous determination of abnormal rollers.

  Returning to the description of the flowchart of FIG. 5, in step S004, when the controller 12 determines that there is no continuation of vibration exceeding the threshold and no abnormal vibration section is extracted, there is no abnormal roller. Then, the abnormal roller discrimination operation is terminated.

  On the other hand, if the controller 12 determines in step S004 that an abnormal vibration section has been extracted, the controller 12 performs the processing from step S005. In step S005, the controller 12 generates an alarm sound from the alarm device 14 to notify the maintenance staff that there is an abnormal roller.

  Only when this alarm sound is generated, the maintenance staff only needs to enter the lower machine room 6 and replace the abnormal roller. On the other hand, if the alarm 14 does not sound, this corresponds to the determination that there is no abnormal roller. Therefore, the maintenance staff does not need to enter the lower machine room 6 to perform the replacement operation of the abnormal roller.

  Next, in step S006, the controller 12 obtains the time during which vibration peaks during the abnormal vibration section. Even in the abnormal vibration section, the amplitude peaks when the abnormal roller comes to the position (b) just beside the abnormality diagnosis device 10. For this reason, the controller 12 sets the time as the passing time of the abnormal roller.

  In addition, when there are a plurality of abnormal rollers, a plurality of abnormal vibration sections exist in one period. In this case, the controller 12 calculates the peak time of vibration for each abnormal vibration section.

  From here, the controller 12 performs a series of processes related to the marking operation. In step S007, the controller 12 starts counting the time for the second round. In step S008, the controller 12 confirms whether or not the abnormal roller passage time obtained in the previous step S006 has come.

  Here, the controller 12 counts the time until the abnormal roller passage time is reached, and determines that the abnormal roller has passed when the abnormal roller passage time is reached. Next, in step S009, the controller 12 causes the marking device 13 to mark the abnormal roller.

  Finally, in step S010, the controller 12 checks whether or not the step 2 has made two turns. If two rounds have not been completed, the process returns to step S007, and the controller 12 repeats steps S007 to S010 until the step 2 makes two rounds to mark abnormal rollers. On the other hand, when the controller 12 determines that the step 2 has made two revolutions, it ends the abnormal roller determination operation.

  The above-described abnormal roller discrimination operation by the series of processes shown in FIG. 4 can be performed in both the upward operation and the downward operation.

The effects of the abnormality diagnosis device 10 for the passenger conveyor 1 according to the first embodiment are summarized as follows.
(Effect 1) The abnormality diagnosis apparatus 10 according to the first embodiment collects vibration waveforms when the step roller 4 passes, and vibrations deviating from an allowable range defined by the upper limit threshold and the lower limit threshold are determined in advance. A portion that continues for the determined determination time or more is detected as an abnormal vibration section, and an abnormal roller can be specified from the peak vibration position in the abnormal vibration section. As a result, it is possible to prevent erroneous determination due to noise in consideration of vibrations of adjacent rails, and to identify the location of the abnormal roller with high accuracy at an initial stage before noise is generated.

(Effect 2) The abnormality diagnosis device 10 according to the first embodiment includes a configuration that warns maintenance personnel when an abnormal roller is detected, and a configuration that can mark the position of the specified abnormal roller. . As a result, the maintenance staff can easily identify the position of the abnormal roller by visual inspection at the initial stage when the vibration due to the deterioration occurs, and the working time can be shortened.

(Effect 3) In the abnormality diagnosis device 10 according to the first embodiment, all of the components are housed in one housing 100. Furthermore, the structure which can fix the housing | casing 100 to the rail 3 by using the magnet 7 is provided. As a result, installation at the time of inspection becomes easy, and the working time can be shortened. Furthermore, since the abnormality diagnosis device 10 can be easily fixed at a desired position, the abnormality roller can be easily detected for both the driving roller 4A and the follower roller 4B.

(Effect 4) The abnormality diagnosis device 10 according to the first embodiment can perform a measurement diagnosis operation that identifies the position of the abnormal roller in the first turn of the circulating step 2 and can perform a marking operation in the second turn. It has a configuration that can. As a result, the measurement diagnosis operation and the marking operation can be completed in a short time, and as a result, the work time can be shortened.

  Note that the controller 12 can execute the measurement diagnosis operation by making a plurality of rounds instead of one round. In this case, for the abnormal vibration section and peak vibration position obtained in each circumference, false detection is prevented by looking at the degree of coincidence, and detection accuracy is improved by performing statistical processing such as averaging. It is possible.

  Further, when performing the measurement diagnosis operation in one round, depending on the start position, there is a possibility that the vibration section that deviates from the allowable range is detected separately at the first and last two locations. In such a case, the controller 12 considers a predetermined determination time and connects the last data of the first round and the first data to perform the determination process, thereby performing vibration for one round. Measurement and diagnosis operations can be performed accurately from the data.

Embodiment 2. FIG.
In previous Embodiment 1, it demonstrated on the assumption that the abnormality diagnosis apparatus 10 of the passenger conveyor 1 is installed at the time of an inspection. On the other hand, in the second embodiment, a case will be described in which the abnormality diagnosis device 10 for the passenger conveyor 1 is always installed, and when an abnormal roller is detected, a notification is sent to a maintenance staff located at a remote location. .

  FIG. 8 is a configuration diagram of the abnormality diagnosis apparatus 10 for the passenger conveyor 1 according to Embodiment 2 of the present invention. Compared with the configuration of FIG. 4 in the first embodiment, the structure of FIG. 8 in the second embodiment has a communication device 15 instead of the alarm device 14. The point which can communicate with the monitoring center 20 is different. Therefore, these differences will be mainly described below.

  FIG. 9 is a flowchart of the abnormal roller discrimination operation executed by the controller 12 according to the second embodiment of the present invention. The abnormal roller discrimination operation in the second embodiment can be broadly divided into a measurement diagnosis operation and a marking operation, similar to the operation of FIG. 5 in the first embodiment, and in steps S101 to S107. A measurement diagnosis operation is performed, and a marking operation is performed in steps S108 to S111.

  The operation from step S101 to step S103 in FIG. 9 is the same as that from step S001 to step S003 in FIG.

  In step S104, the controller 12 determines an abnormal vibration section by using a preset threshold and duration for the measured vibration waveform. This determination process itself is the same as step S004 in FIG.

  However, in the second embodiment, since the abnormality diagnosis device is always installed, vibration due to passengers running down is also detected. However, in the present invention, the continuity of the vibration waveform exceeding the threshold is also confirmed. For this reason, a vibration waveform having no continuity due to a passenger running down or the like is not extracted as an abnormal vibration section, and is not erroneously determined as an abnormal roller.

  If it is determined in step S104 that there is no vibration that continuously exceeds the threshold and no abnormal vibration section is detected, the controller 12 returns to S101 and continues the vibration measurement, while step S104. When the abnormal vibration section continuously exceeding the threshold value is detected, the controller performs the processing after the next step S105.

  Step S105 is the same as step S006 in FIG. 5, and the controller 12 obtains the time when the vibration peaks in the abnormal vibration section. In step S106, the controller 12 stores the vibration peak time.

  Next, in step S107, the controller 12 confirms whether or not the vibration peak stored in the previous S106 occurs at the same time every round as the vibration reproducibility. When vibration is detected for the first time, the process returns to S101, and the controller 12 performs another round vibration measurement. If the vibration is caused by a passenger, the vibration will not be detected at the same time on the next lap. Then, when the vibration peak is detected at the same time more than the preset number of times, the controller 12 determines that the roller is an abnormal roller, and proceeds to the processing after the next step S108.

  From here, the controller 12 performs a series of processes related to the marking operation. The operation from step S108 to S110 is the same as that in steps S007 to S009 of FIG. 5 described above, and the controller 12 marks the abnormal roller with the marking device 13 when the passing time of the abnormal roller is reached.

  In step S <b> 111, the controller 12 issues a notification to the monitoring center 20 where maintenance personnel are present via the communication device 15 to notify that there is an abnormal roller.

The abnormality diagnosis device 10 for the passenger conveyor 1 in the second embodiment of the present invention is different from the first embodiment in that it is always installed, but basically the same effect can be obtained. Furthermore, the special effects in the second embodiment are summarized as follows.
(Effect 5) The abnormality diagnosis apparatus 10 according to the second embodiment has a configuration including the communication device 15. As a result, it is possible to always monitor that there is an abnormal roller, not at the time of inspection. Furthermore, the maintenance staff who has received the notification of the abnormal roller can go to the site, and in the machine room 6 can determine the corresponding abnormal roller only by visual observation, so that the working time can be reduced.

(Effect 6) Since the abnormality diagnosis apparatus 10 in the second embodiment is always installed, the structure for fixing the casing 100 to the rail 3 is not the magnet 7 but bolt fixing, adhesive fixing, or the like. be able to.

  Furthermore, in the first embodiment, the abnormality diagnosis device 10 can be installed on the forward drive rail 3A or the forward tracking rail 3B that can access the step 2 at the time of inspection. However, in the second embodiment, since the abnormality diagnosis device 10 is always installed, the return drive rail 3C or the return tracking rail 3D that is difficult to access at the time of inspection is also installed if the passenger conveyor 1 is manufactured. be able to. When the abnormality diagnosis device 10 is installed on the return drive rail 3C or the return follow-up rail 3D, vibration due to passengers running down is not detected.

  As a result, the abnormality diagnosis device 10 can be installed at an appropriate position in terms of space, and the abnormality diagnosis device 10 can be installed at a plurality of locations as required, so that constant monitoring of abnormal rollers can be realized with high accuracy.

Embodiment 3 FIG.
In the first and second embodiments, the case where the acceleration sensor 11 and the marking device 13 are arranged in one housing 100 has been described. On the other hand, in the third embodiment, the acceleration sensor 11 and the marking device 13 are arranged at positions apart from each other, and when an abnormal roller is detected, the acceleration sensor 11 and the marking device 13 are not placed on the step roller 4 but on the step 2. A case where marking is performed will be described.

  FIG. 10 is a configuration diagram of the abnormality diagnosis apparatus 10 for the passenger conveyor 1 according to Embodiment 3 of the present invention. The abnormality diagnosis device 10 according to the third embodiment is divided into a first abnormality diagnosis device 10A in which an acceleration sensor is arranged and a second abnormality diagnosis device 10B in which a marking device 13 is arranged.

  The first abnormality diagnosis apparatus 10A includes an acceleration sensor 11, a controller 12A, and a transmitter 16, and is housed in the housing 100A. The housing 100 </ b> A is fixed to the rail 3 by the magnet 7.

  On the other hand, the second abnormality diagnosis device 10B includes a controller 12B, a marking device 13, an alarm device 14, and a receiver 17, and is housed in the housing 100B.

  Based on the value of the acceleration sensor 11, the controller 12A in the first abnormality diagnosis device 10A determines the abnormal roller in the same manner as the controller 12 in the first and second embodiments.

  In addition, when an abnormal roller is detected, the transmitter 16 in the first abnormality diagnostic device 10A transmits information specifying the position to the second abnormality diagnostic device 10B.

  On the other hand, the controller 12B in the second abnormality diagnosis device 10B receives the transmission signal of the transmitter 16 in the first abnormality diagnosis device 10A via the receiver 17. Then, the controller 12B controls the marking device 13 based on the received information, thereby marking the position corresponding to the abnormal roller.

  FIG. 11 is a diagram illustrating an arrangement example of the first abnormality diagnosis device 10A and the second abnormality diagnosis device 10B according to Embodiment 3 of the present invention. In FIG. 11, the first abnormality diagnosis device 10A is installed on the outward drive rail 3A or the outward follow-up rail 3B accessible at the time of inspection, and the second abnormality diagnosis device 10B is provided on the upper landing 5A or the lower landing 5B. It is installed near the step 2.

  The abnormal roller discriminating operation in the third embodiment is the same as the flowchart shown in FIG. 5 in the first embodiment. However, in the third embodiment, the positions of the first abnormality diagnostic device 10A and the second abnormality diagnostic device 10B are different. For this reason, in performing the process of step S006, the controller 12A performs a correction operation so as to shift the vibration peak time by the movement time between the first abnormality diagnosis device 10A and the second abnormality diagnosis device 10B. .

  By performing such a correction calculation, the first abnormality diagnosis device 10A may be disposed at any position on the rail 3, and the second abnormality diagnosis device 10B is disposed at either the upper landing or the lower landing. It will be good. However, it is necessary to measure the distance between the first abnormality diagnosis device 10A and the second abnormality diagnosis device 10B and set the travel time between them in advance.

The abnormality diagnosis device 10 for the passenger conveyor 1 according to Embodiment 3 of the present invention is different from the previous Embodiments 1 and 2 in that the acceleration sensor 11 and the marking device 13 are separately arranged. The same effect can be obtained. Furthermore, the unique effects in the third embodiment are summarized as follows.
(Effect 7) By placing the acceleration sensor 11 and the marking device 13 separately, the marking position can be the step 2. As a result, since the surface of the step 2 is wider than the step roller 4, it is possible to easily identify the abnormal roller by visual inspection in the machine room 6 in which the maintenance staff replaces the abnormal roller. However, since the marking on the step 2 is visible to the user, it must be marked with something that can be erased after inspection.

  In the third embodiment described above, the first abnormality diagnosis device 10A and the second abnormality diagnosis device 10B are each provided with the controllers 12A and 12B, and the transmitter 16 and the receiver 17 transmit and receive signals. Although described, the present invention is not limited to such a configuration. For example, the marking device 13 and the alarm device 14 may be connected by a cable from the controller 12A in the first abnormality diagnosis device 10A, and the same effect can be obtained with fewer components.

  1 Passenger conveyor, 2 steps, 3 rails, 3A outbound drive rail, 3B outbound drive rail, 3C return drive rail, 3D return track rail, 4 step roller, 4A drive roller, 4B follower roller, 5A upper landing, 5B lower landing , 6 Machine room, 7 Magnet, 8 Vertical beam, 10 Abnormality diagnosis device, 10A 1st abnormality diagnosis device, 10B 2nd abnormality diagnosis device, 11 Acceleration sensor, 12 Controller, 12A Controller, 12B Controller, 13 Marking device, 14 alarm device, 15 communication device, 16 transmitter, 17 receiver, 20 monitoring center, 100 housing, 100A first housing, 100B second housing.

Claims (7)

An acceleration sensor for measuring the vibration amount of the rail on which the step rollers attached to the steps of the passenger conveyor travel;
Based on the change over time of the vibration amount measured by the acceleration sensor while the step is traveling at a constant speed, a section where the vibration amount exceeding a preset threshold is continuously measured for a preset duration or more is defined as an abnormal vibration section. And a controller for identifying an abnormal roller from a time corresponding to a peak vibration amount in the abnormal vibration section. The abnormality diagnosis device for a passenger conveyor according to claim 1, further comprising a marking device for marking the abnormal roller specified by the controller so that a maintenance staff can visually check the abnormal roller. An alarm device for notifying maintenance personnel that an abnormal roller has been identified;
3. The abnormality diagnosis of a passenger conveyor according to claim 1, wherein when the controller identifies the abnormal roller, the controller notifies the maintenance staff that the abnormal roller has been identified via the alarm device. apparatus. A communication device for notifying a monitoring center located at a remote location that an abnormal roller has been identified;
3. The passenger conveyor abnormality according to claim 1, wherein when the controller identifies the abnormal roller, the controller notifies the monitoring center that the abnormal roller has been identified via the communication device. Diagnostic device. The abnormality diagnosis apparatus has a structure in which each component is mounted in a housing,
The abnormality diagnosis device for a passenger conveyor according to any one of claims 1 to 4, wherein the casing is fixed to the rail by a magnet. The acceleration sensor and the marking device are arranged at separate positions,
The abnormality diagnosis device for a passenger conveyor according to claim 2, wherein the marking device attaches the mark to the step including an abnormal roller. An abnormality diagnosis method for a passenger conveyor for determining a deterioration state of a step roller attached to a step of a passenger conveyor from a vibration state of the step roller,
A data acquisition step of acquiring time-dependent data of vibration amount by reading an output from an acceleration sensor attached to a rail on which the step roller runs while the step is traveling at a constant speed;
A section to be extracted as an abnormal vibration section when there is a section in which the vibration amount exceeding a preset threshold value continues for a preset duration in the time-dependent change data of the vibration amount acquired by the data acquisition step An extraction step;
An abnormality diagnosis method for a passenger conveyor, comprising: an abnormal roller specifying step for specifying an abnormal roller from a time corresponding to a peak vibration amount in the abnormal vibration section extracted in the section extracting step.

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