JP2018100138A - Passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a passenger conveyor capable of detecting abnormality during a trial operation.SOLUTION: A passenger conveyor includes: a truss supported by a support angle at a building; a plurality of footsteps disposed along the longer direction in the truss, and connected in an endless manner; a machine room provided at one end part of the truss; a driving device including a motor disposed in the machine room; a pair of left and right main driving sprockets disposed in the machine room, rotating in synchronization with the driving device by a driving chain stretched between itself and the driving device, and for driving the footsteps; a sound collection device for collecting sound generated from the passenger conveyor; and a control part for, in the case where the sound collected by the sound collection device is abnormal sound, stopping the operation of the driving device.SELECTED DRAWING: Figure 1

Description

  Embodiments of the present invention relate to passenger conveyors.

  Passenger conveyors such as escalators and moving walkways are activated and stopped when foreign objects enter. When the safety device is activated, foreign matters are usually removed by an attendant or the like, and after a trial run, normal operation is resumed if there is no abnormality.

JP 2009-35339 A JP-A-10-279246

  However, since confirmation of whether or not an abnormality has occurred is mainly visual confirmation by an attendant, foreign matter is mixed in a place where it is difficult to find by visual confirmation, or foreign matter is mixed in an unexpected place. In some cases, it was not easy to find abnormalities.

  In addition, for example, if the skirt guard is deformed due to excessive stress and the safety device operates and the escalator stops due to contact with the step, when the trial run is performed after safety confirmation, the cause of the abnormality is insufficient This could cause damage to the equipment.

  Then, in view of the said problem, embodiment of this invention aims at providing the passenger conveyor which can detect abnormality at the time of a test run.

  An embodiment of the present invention includes a truss supported by a building at a support angle, a plurality of steps arranged endlessly along the longitudinal direction in the truss, and provided at one end of the truss. And a drive device including a motor arranged in the machine room, and a drive chain arranged in the machine room and spanned between the drive devices and rotating in synchronization with the drive device. A pair of left and right main drive sprockets for driving the steps, a sound collecting device for collecting sound generated from a passenger conveyor, and the sound collected by the sound collecting device when the sound collected by the sound collecting device is an abnormal sound. It is a passenger conveyor which has a control part which stops driving | operation.

Explanatory drawing seen from the side of the escalator which shows one Embodiment of this invention. Explanatory drawing which shows the relationship between the sound which the sound collector collected, and a threshold value. The figure which shows the flowchart at the time of one Embodiment of this invention performing a test run. The block diagram which shows one Embodiment of this invention.

  Hereinafter, the escalator 10 of one Embodiment of this invention is demonstrated based on FIGS. 1-4.

(1) Escalator 10
The structure of the escalator 10 will be described with reference to FIG. FIG. 1 is an explanatory view of the escalator 10 as seen from the side.

  A truss 12 that is a framework of the escalator 10 is supported using support angles 2 and 3 across the upper and lower floors of the building 1.

  Inside the upper floor machine room 14 at the upper end of the truss 12, a drive unit 18 for running the step 30, a pair of left and right main drive sprockets 24, 24, and a pair of left and right handrail drive sprockets 100, 100 are provided. ing. The drive device 18 stops and stops the rotation of the motor 20, the speed reducer, the output sprocket attached to the output shaft of the speed reducer, the drive chain 22 driven by the output sprocket, and the motor 20. And a disc brake for maintaining the state. The drive chain 22 rotates the pair of left and right main drive sprockets 24, 24. The pair of left and right main drive sprockets 24, 24 and the pair of left and right handrail drive sprockets 100, 100 are connected by a connecting belt (not shown) and rotate synchronously. A control unit 50 for controlling the motor 20, the disc brake, and the like is provided in the machine room 14 on the upper floor side.

  A pair of left and right driven sprockets 26 and 26 are provided in the lower floor machine room 16 at the lower end of the truss 12. Between the pair of left and right main drive sprockets 24, 24 on the upper floor side and the pair of left and right driven sprockets 26, 26, a pair of left and right endless step chains 28, 28 are suspended. A plurality of steps 30 are attached to the pair of left and right step chains 28, 28 at equal intervals. When the motor 20 rotates, the front wheel 301 of the step 30 travels on a guide rail (not shown) fixed to the truss 12, and the rear wheel 302 travels on the guide rail 25 fixed to the truss 12.

  On the left and right sides of the truss 12, a pair of left and right balustrades 36, 36 are erected. A handrail rail 39 is provided above the balustrade 36, and an endless handrail belt 38 moves along the handrail rail 39. A front skirt guard 40 on the upper floor side is provided in the lower front part on the upper floor side of the balustrade 36, and a front skirt guard 42 on the lower floor side is provided in the lower front part on the lower floor side. Inlet portions 46 and 48, which are entrances and exits of the handrail belt 38, protrude from each other.

  A skirt guard 44 is provided at the lower side of the balustrade 36, and the step 30 travels between the pair of left and right skirt guards 44, 44. Operation panels 52 and 56 and speakers 54 and 58 are provided on the inner side surfaces of the skirt guards 44 on the upper and lower floors, respectively.

  The handrail belt 38 enters the front skirt guard 40 from the inlet portion 46 on the upper floor side, is passed over the handrail drive sprocket 100 through the guide roller group 64, and then is skirted through the guide roller group 66. It moves in the guard 44 and appears outside the front skirt guard 42 from the inlet 48 on the lower floor side. The handrail belt 38 moves in synchronization with the step 30 as the handrail drive sprocket 100 rotates together with the main drive sprocket 24. Further, a pressing member 70 is provided for pressing the handrail belt 38 that travels to the rotating handrail driving sprocket 100.

  An entrance / exit of a pair of left and right skirt guards 44, 44 on the upper floor side, and the upper floor side entrance / exit plate 32 is horizontally provided on the ceiling surface of the machine room 14. A lower floor side entrance / exit board 34 is provided horizontally on the ceiling surface of the machine room 16, which is the entrance for the pair of left and right skirt guards 44, 44 on the lower floor side. A comb-like comb 60 is provided at the front end of the upper floor board 32, and the step 30 enters the comb 60. A comb-like comb 62 is also provided at the tip of the lower floor board 34.

  The escalator 10 is provided with a safety device 90 for ensuring passenger safety (see FIG. 4). The safety device 90 includes a skirt guard pinched detection device provided in the skirt guard 44, an inlet pinched detection device provided in the inlet portions 46, 48, a step lift detection device provided in the guide rail 25, and a step chain cut. Detection device, emergency stop button, etc. The skirt guard pinching detection device is a device that detects that a foreign object (for example, clothes or luggage) is pinched between the skirt guard 44 and the step 30, and the inlet pinching detection device is a handrail belt 38. Is a device that detects when a foreign object (for example, a passenger's hand or baggage) is drawn simultaneously with the handrail belt 38 into the inlet part 46 or the inlet part 48 into which the vehicle is drawn.

(2) Sound collector 80
The sound collection device 80 is a device that collects sound generated from the passenger conveyor, and as shown in FIG. 1, the installation location is not particularly limited, but is preferably installed at two or more locations, for example, a skirt The guard 44, the comb 60, the inlet portions 46 and 48, the drive chain 22, the step 30, the step chain 28, and the like can be installed at a position where sound can be collected.

  When the sound collecting device 80 is installed in the vicinity of each of the above members, the contact between the skirt guard 44 and the step 30 and the contact between the step 30 and the comb 60 can be confirmed, and the skirt guard 44 and the step 30 can be confirmed. It is possible to confirm whether foreign matter is sandwiched between the step 30 and the comb 60 or between the inlet portions 46 and 48 and the handrail belt 38. Furthermore, it is possible to detect a sound caused by insufficient lubrication of the drive chain 22.

  The collected sound collected by the sound collecting device 80 is transferred to the control unit 50 wirelessly or by wire, and when the control unit 50 determines that the collected sound is an abnormal sound, the operation of the driving device 18 can be stopped.

  The determination as to whether or not the collected sound collected by the sound collecting device 80 is an abnormal sound can be made based on, for example, sound pressure or frequency. Specifically, the sound collection device 80 transfers sound information of the collected sound to the control unit 50. Next, as shown in FIG. 2, when an arbitrary sound pressure is set as the first threshold value and the control unit 50 analyzes the sound information of the collected sound and the collected sound includes a sound pressure equal to or higher than the first threshold value, It can be determined that

  The sound collection performed by the sound collecting device 80 is performed at the time of a trial operation that is performed when the operation is started from the stopped state of the escalator 10, and the test operation is preferably performed at a lower speed than that during the normal operation. The lower speed than that during normal operation is, for example, preferably a speed of 30 m / s or less, more preferably a speed of 5 to 20 m / s, and even more preferably a speed of 5 to 15 m / s. . When the operation speed at the time of the trial operation is lower than that at the time of the normal operation, it is easy to reduce the noise of the sound collected by the sound collection device 80, and thus the accuracy of detecting the abnormal sound is excellent.

(3) Trial Run The procedure for performing a trial run will be described based on the flowchart shown in FIG. 3 and the block diagram shown in FIG.

  In step S1, the escalator 10 is performing normal operation.

  In step S <b> 2, the escalator 10 is broken or mixed with foreign matter, and the safety device 90 is activated, whereby the control unit 50 stops the drive device 18 and the escalator 10 stops. Next, the process proceeds to step S3.

  In step S3, the control unit 50 notifies the outside that there is an abnormality using the speakers 54 and 58, or distributes a signal to a monitoring room or the like, and proceeds to step S4.

  In step S4, an attendant arrives by external notification, and after repair or removal of foreign matter is performed by the attendant, safety confirmation is performed, and the process proceeds to step S5.

  In step S5, it is determined whether the clerk performs a trial run. If the clerk determines that there is a problem at the time of safety confirmation, the test operation is not performed and the process returns to step S4 (in the case of No), and if it is determined that there is no problem, the process proceeds to step S6 to perform the test operation (in the case of Yes).

  In step S6, the clerk performs a trial run starting operation using the key switches of the operation panels 52 and 56, and the process proceeds to step S7.

  In step S7, a trial run is performed at a low speed, and simultaneously with the start of the trial run, the sound collecting device 80 is activated to start collecting sounds generated from the escalator 10, and the process proceeds to step S8.

  In step S8, the sound information of the collected sound collected by the sound collecting device 80 is transferred to the control unit 50, and the control unit 50 analyzes the sound information and determines whether or not the sound is abnormal. When the control unit 50 determines that the collected sound is an abnormal sound, the control unit 50 automatically stops the test operation and then performs external notification, and the staff removes the malfunction and returns to step S6 (in the case of Yes). When the control unit 50 determines that the collected sound is not an abnormal sound, the process proceeds to step S9 (in the case of No).

  In step S9, the clerk performs a trial operation stop operation using the key switches of the operation panels 52 and 56, and the process proceeds to step S10.

  In step S10, the escalator 10 stops and proceeds to step S11.

  In step S11, the trial run ends, and the process proceeds to step S12.

  In step S12, the clerk performs a normal operation starting operation using the key switches of the operation panels 52 and 56, and the process proceeds to step S13.

  In step S13, normal operation starts and ends.

(4) Effect According to the present embodiment, if an abnormal sound is generated during a trial operation when starting operation from the stopped state of the escalator 10, the drive device 18 is stopped early to damage the escalator 10. Can be minimal.

(5) Modification Examples The first threshold value may be a preset value, but is not limited thereto, and based on the collected sound collected by the sound collecting device 80 during operation at a low speed, the control unit 50 May set a threshold for sound pressure or frequency. In this way, it is possible to cope with a change in sound accompanying aging deterioration by resetting the threshold value as needed.

  In the above embodiment, when an arbitrary sound pressure is set as the first threshold, the control unit 50 analyzes the collected sound collected by the sound collecting device 80, and the analyzed collected sound includes a sound pressure equal to or higher than the first threshold. Although it is determined that the sound is abnormal, the present invention is not limited to this. For example, an arbitrary frequency is set as the second threshold, and the collected sound analyzed by the control unit 50 includes a frequency equal to or higher than the second threshold. In some cases, it may be determined that the sound is abnormal, and if an arbitrary frequency is set as the third threshold and the collected sound analyzed by the control unit 50 includes a frequency equal to or lower than the third threshold, the sound is abnormal. Or a combination thereof.

  Moreover, in the said embodiment, although the control part 50 analyzed and judged the sound collected by the sound collector 80, the judgment whether it was abnormal sound was not limited to this, For example, more than arbitrary frequency If the sound collecting device 80 that collects only sound of a specific frequency using a high-pass filter that transmits only a specific frequency or a low-pass filter that transmits only a frequency below an arbitrary frequency detects abnormal sound You may judge that it is a sound.

  As a preferred embodiment, when the sound collecting device 80 is provided in the step 30 or the step chain 22, the sound can be collected while moving in the truss as the step 30 or the step chain 22 is driven during the trial operation. It is possible to specify the sound generation location. For example, when the abnormal sound is collected, the control unit 50 stops the driving device 18 to stop the driving of the steps 30 and the step chain 22. It is possible to stop near the location of abnormal noise. The position information of the sound collecting device 80 may be transferred to the control unit 50, and the control unit 50 may identify the location where the abnormal sound is generated. The sound collecting device 80 itself has a notification function, and the sound collecting device The location where the abnormal sound is generated may be specified by the 80 directly informing the staff. Further, when the sound collecting device 80 is provided in a plurality of steps 30 (preferably all the steps 30), even if an abnormality occurs in the step 30, the step 30 in which the abnormal sound is generated is specified. It's easy to do. When the sound collecting device 80 is installed on the step 30 or the step chain 22, for example, a battery can be used to supply power to the sound collecting device 80, and the battery can be charged by a non-contact charging method. it can.

  As another preferred embodiment, when two or more sound collecting devices 80 are provided, the location where the abnormal sound is generated can be identified from the position information of the sound collecting device 80 that has detected the abnormal sound. Specifically, from the magnitude of the sound pressure of the abnormal sound collected by each sound collecting device 80, the control unit 50 determines which sound collecting device 80 is close to the location where the abnormal sound is generated. Can be specified.

  In addition, although the start operation of the trial run in step S6 in the flowchart is performed by the key switch of the operation panels 52 and 56, the trial run from steps S6 to S11 is performed by inserting a key into the key switch and turning the key. It may be performed during jogging operation in which operation is performed only while the vehicle is in operation.

  Further, the transition from the trial operation stop operation in step S9 to the normal operation start in step S13 in the flowchart is performed by increasing the trial operation speed stepwise over time to reach the normal operation speed. May be.

  Moreover, in the said embodiment, although demonstrated applying to the escalator 10, you may replace with this and may apply to the moving sidewalk.

  Although one embodiment of the present invention has been described above, this embodiment is presented as an example and is not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 10 ... Escalator, 1 ... Building, 12 ... Truss, 14 ... Machine room, 18 ... Drive device, 20 ... Motor, 22 ... Drive chain, 24 ... Main Drive sprocket, 30 ... Step, 32, 34 ... Boarding board, 36 ... Railing, 38 ... Handrail belt, 40, 42 ... Front skirt guard, 44 ... Skirt guard part, 46, 48 ... Inlet part, 50 ... Control part, 80 ... Sound collector, 90 ... Safety device, 100 ... Handrail drive sprocket

An embodiment of the present invention includes a truss supported by a building at a support angle, a plurality of steps arranged endlessly along the longitudinal direction in the truss, and provided at one end of the truss. And a drive device including a motor arranged in the machine room, and a drive chain arranged in the machine room and spanned between the drive devices and rotating in synchronization with the drive device. A pair of left and right main drive sprockets for driving the steps, a sound collecting device for collecting sound generated from a passenger conveyor, and the sound collected by the sound collecting device when the sound collected by the sound collecting device is an abnormal sound. have a control unit for stopping the operation, the control unit is in operation at a lower speed than during normal operation, the sound collecting device for collecting sound, a passenger conveyor.

Claims (10)

A truss supported by a support angle in the building,
A plurality of steps arranged along the longitudinal direction in the truss and connected endlessly,
A machine room provided at one end of the truss;
A drive device including a motor disposed in the machine room;
A pair of left and right main drive sprockets for driving the steps by rotating in synchronization with the drive device by a drive chain disposed in the machine room and spanned between the drive device;
A sound collector that collects sound generated from the passenger conveyor;
A passenger conveyor comprising: a control unit that stops operation of the driving device when the sound collected by the sound collecting device is abnormal sound. The control unit analyzes the sound pressure or frequency of the sound collected by the sound collection device and determines that it is an abnormal sound.
The passenger conveyor according to claim 1. Balustrades erected on the left and right sides of the step;
A skirt guard provided at the bottom of the balustrade;
A boarding board provided at a boarding gate between the pair of left and right skirt guards;
A comb provided at the tip of the boarding board;
Front skirt guard at the bottom of the railing entrance,
A passenger conveyor further comprising an inlet portion provided on the front skirt guard,
The sound collecting device collects sound generated from any of the skirt guard, the comb, the inlet, the drive chain, or the steps;
The passenger conveyor according to claim 1 or 2. The sound collector collects sound during operation at a lower speed than during normal operation.
The passenger conveyor of any one of Claims 1-3. Arbitrary sound pressure is set as a first threshold, and when the sound collector detects a collected sound including a sound pressure equal to or higher than the first threshold, the control unit stops the operation of the drive device.
The passenger conveyor of any one of Claims 1-4. An arbitrary frequency is set as a second threshold, and when the sound collecting device detects a collected sound including a frequency equal to or higher than the second threshold, the control unit stops the operation of the driving device.
The passenger conveyor of any one of Claims 1-5. An arbitrary frequency is set as a third threshold, and when the sound collecting device detects a collected sound including a frequency equal to or lower than the third threshold, the control unit stops the operation of the driving device.
The passenger conveyor of any one of Claims 1-6. Based on the sound collected by the sound collector, the control unit sets a threshold value of sound pressure or frequency,
The passenger conveyor of any one of Claims 5-7. The sound collecting device is provided in the step or the step chain for driving the step;
From the location information where the sound collector has collected abnormal sounds,
The control unit identifies the location where abnormal noise is occurring,
The passenger conveyor of any one of Claims 1-8. Two or more of the sound collectors are provided;
From the location information provided with the sound collecting device that collected the abnormal sound,
The control unit identifies the location where abnormal noise is occurring,
The passenger conveyor according to any one of claims 1 to 9.

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