JP2009155050A - Automatic diagnostic operating device of passenger conveyer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To predict early a deterioration of a conveyor apparatus from the initial stage of starting the conveyor operation. <P>SOLUTION: An automatic diagnostic operating device of a passenger conveyor having a motor 7 to drive footboards and handrails through a chain and belt and a controller 4 to control the start and stop of the motor and its rotating speed is equipped with a start command sensing means 14 to sense that a start command is issued, a diagnostic operation ordering means 17 to give command to the controller so that an operation solely devoted to the diagnosis is to be conducted through an acceleration control and/or torque control, different from the ordinary start, in order to diagnose the condition of the chain etc., and a diagnostic data measuring means 18 to measure the information under monitoring by the controller during the diagnostic operation, and when the start command is issued, the diagnostic operation is started for diagnosing the deteriorated condition on the basis of the values or change rate of the measured information. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a passenger conveyor automatic diagnosis operation device, and is particularly suitable for an apparatus that maintains an appropriate state even if a transmission device that drives the conveyor deteriorates.

  Conventionally, by repeating the operation in the special operation mode that is less frequently used at specific intervals, it is possible to prevent the movement of the standby device from getting worse, or when a special operation mode command is given, an abnormality in the device is discovered, In order to reduce or reduce malfunctions that cannot be used when necessary, it is possible to check the operating status of the special operation mode on a daily basis, and automatically switch to the special operation mode at a specific time even in the normal operation start command to perform test operation. For example, it is described in Patent Document 1.

JP-A-5-310393

  In the above-described prior art, the test operation in the special operation mode is performed at a preset interval, so that the passengers who want to use the test operation and the normal operation synchronize with each other, which causes inconvenience to the passengers. . In addition, since the test operation is only self-checking whether the operation has been completed after starting the operation according to the set operation procedure, it is a confirmation that the device operates normally at the moment when the test operation is performed. Since it is not a check that captures the changing tendency of wear deterioration of equipment, it cannot be determined whether it will operate correctly next time.

  Furthermore, it does not prevent the occurrence of breakdowns, and it is not possible to know in advance when adjustments or parts need to be replaced. Must be implemented, and maintaining quality depends on the ability of technicians to catch signs of deterioration.

  An object of the present invention is to solve the above-mentioned problems of the prior art and to predict the signs of equipment deterioration from the beginning of product operation from an early stage. Another object is to reduce the frequency of maintenance work by technicians.

  In order to achieve the above object, the present invention provides a step connected endlessly, a hand rail provided on a balustrade standing on the side of the step and moving in synchronization with the step, the step and the hand Detecting that an activation command is given in an automatic diagnostic operation device for a passenger conveyor having an electric motor that drives a rail via a chain and a belt, and a control device that controls the start, stop, and rotation speed of the electric motor A start command detection means, a diagnosis operation command means for instructing the control device to perform a diagnosis dedicated operation by acceleration or torque control different from a normal start in order to diagnose the state of the chain or the like, and during the diagnosis dedicated operation Diagnostic data measuring means for measuring information monitored by the control device, and when the start command is given, the diagnostic dedicated operation is started and measured. It is intended to diagnose deterioration state based on the value or the change rate of the information.

  According to the present invention, when a start command is given, the diagnosis dedicated operation is started and the deterioration state is diagnosed. Therefore, in the passenger conveyor in which the deterioration speed of the equipment varies depending on the installation environment and operating conditions, for each passenger conveyor By always comparing the diagnosis results under the same conditions, it is possible to accurately grasp the change tendency of deterioration. Therefore, it is possible to plan maintenance work by a technician before deviating from the performance management value of the equipment, and to minimize downtime for maintenance.

  Hereinafter, an embodiment of a passenger conveyor automatic diagnosis operation apparatus according to the present invention will be described in detail with reference to the drawings. An escalator will be described as an example of a passenger conveyor.

  FIG. 1 is a front view showing the configuration of an escalator drive device, and the escalator travels a step 1 on which a passenger gets on and off to transport the passenger. When the escalator is running, a key is inserted into the operation panel 3 by the equipment manager or engineer 2, and there is no person in the vicinity of the boarding / alighting part or alerts the surroundings, and the key is turned by hand to output an activation signal. Is transmitted to the control device 4 provided in the machine room.

  When receiving the activation signal, the control device 4 opens the braking device 5 that brakes the step 1 as shown in FIG. 2, gives a command to the torque variable device 6 to drive the electric motor 7, and the electric motor 7 starts to rotate. And the speed reducer 8 rotate synchronously. The speed reducer 8 is connected to a step chain 10 that connects the steps 1 by a driving chain 9, and is further connected to a handrail drive chain 13 that transmits power to a handrail drive device 12 that drives the handrail 11. Therefore, the step 1 and the handrail 11 rotate in synchronization with the rotation of the electric motor 7 to transport passengers safely.

  FIG. 3 is a functional block diagram. When the escalator is operated in the upper or lower direction, the facility manager or the engineer 2 issues an alarm command as a preparatory operation and announces that the person in the vicinity starts to start. Thereafter, an activation operation is performed by operating a key or the like, and an activation signal is output. The start command detecting means 14 for detecting that the start signal is output and the escalator main body control function are stored in an isolated area.

  The start determination means 15 determines whether the start signal is the first signal of the day based on the waiting time information and the date / time information, and the stop command detection means 16 is instructed to stop from the normal running state by a stop operation of the facility manager or the technician 2 Detect that is given. If it is determined that it is the first start signal on that day, a dedicated operation for diagnosis is performed before the normal acceleration operation by the product body control is started. The diagnostic operation command means 17 gives a command to perform a dedicated operation for diagnosis again immediately after the normal stop operation for the first time of the day is performed after continuing normal running for a certain time or longer.

  When a diagnosis operation command is given, the escalator starts operation according to the program command of the diagnosis operation command means 17 for a predetermined time, and the diagnosis data measurement means 18 receives information monitored by the control device 4, for example, an operation command. Measure the time from when it is given until the step 1 starts to move to diagnose the movable piece operation stroke of the braking device 5, or measure the time for 2 to 10 pulses after the handrail 11 starts to move to drive the handrail Data for diagnosing the tension of the chain 13 is measured.

  The measurement data storage means 19 stores the measured data for a certain period in order to catch the change tendency, and the deterioration diagnosis means 20 changes by dividing the difference between the last measurement data measured and the latest measurement data by the distance and time traveled in the meantime. Capture trends and diagnose equipment degradation. The monitoring center 21 notifies the technician of the diagnosis result when it is determined that the adjustment work plan is necessary according to the result of the diagnosis.

  The operation of the automatic diagnosis operation will be described with reference to the flowchart shown in FIG. 4 and the graphs shown in FIGS.

  In step 1, it is determined whether an escalator activation command is given by the key operation of the facility manager or the technician 2. If it is determined that the start command is given, it is determined in step 2 whether it is the first start command of the day. The determination is made based on the date information based on whether the date has changed with respect to the previous activation operation and the waiting time from the previous stop has elapsed approximately three hours or more.

  If it is determined that this is the first start command, a diagnostic operation command is given in step 3. The storage area of the program that gives the diagnostic operation command and the program that controls the escalator main body is clearly isolated, and the escalator operates by giving the initiative to the main body control and the diagnostic operation instruction program that is isolated only during the diagnostic operation.

  When a diagnostic operation command is given, a torque for rotating the electric motor 7 in a holding state without applying power to the braking device 5 in step 4 is applied. The torque at this time may be such that the brake holding state is maintained and is not defeated by some unbalance of the steps, so that 10% to 100% of the rated torque is appropriate as a guide.

In step 5, a command is given to the control device 4 so as to start the escalator operation at a slower starting acceleration than usual. In order to make a detailed diagnosis of the change tendency due to wear deterioration of the equipment at this time, the diagnosis accuracy increases as the acceleration is delayed, but instead the convenience of the person who performs the start-up operation decreases, so that the acceleration is reduced to 0. An approximate value of 05 m / s ^{2 to} 0.005 m / s ² is appropriate. At the same time as the operation start command is given, current is supplied to the braking device 5 in Step 6 to generate an electromagnetic force to release the holding state. If this state continues, the holding state is released and the step 1 starts to move. In step 7, it is determined whether the time until the step 1 starts to move has not exceeded N seconds.

  As shown in FIGS. 5 and 6, when the stroke of the movable piece of the braking device 5 increases, the time required until the holding state is released increases, and as a result, the time until the step 1 starts moving also increases. If the stroke management value is a general movable piece, the opening operation is completed in about 0.2 seconds to 0.8 seconds, so N includes the control loss time. If N is increased, it takes longer to operate in accordance with the program command for diagnostic purposes that is isolated from the escalator control program, so it may be possible that the safety device control function does not work for 3 seconds. ~ 7 seconds is appropriate. If the start of movement of step 1 cannot be detected even after N seconds have elapsed in step 7, it is determined in step 8 that it is a diagnostic operation error or a braking device abnormality, and the remote monitoring center 21 is notified and the driving control initiative is given. Hand over to the escalator program and switch to normal operation to finish the diagnosis.

  If it is determined in step 9 that the step 1 starts moving within N seconds, the time T2 when the step 1 starts moving is measured in step 10, and at the same time, the driving control initiative is transferred to the escalator program in step 11 to start normal operation. The escalator starts driving at normal acceleration and continues running at the set speed. During this time, the time D1 required from the time when the current is supplied to the braking device 5 from the data measured in Step 6 and Step 10 in Step 12 until the step 1 starts to move is calculated, and the calculation result is stored in a predetermined area.

  Thereafter, in step 13, it is determined whether a stop command is normally given to the escalator by a key operation while confirming the surrounding safety by the facility manager or the engineer 2. If it is determined that a normal stop instruction has been given, braking of the escalator is started in step 14, and it is determined in step 15 whether the braking device 5 is in the holding state and the escalator has stopped. If it determines with having stopped, it will determine whether the time which drive | worked from the start of an escalator until it stops in step 16 is more than M time. Here, M is a guideline for the time required for the coil device 5 to be energized and stabilized when the braking device 5 is energized, and 0.5 to 3 hours is appropriate.

  If the vehicle stops without traveling for more than M hours, it is determined in step 17 that the brake device 5 cannot be diagnosed based on the HOT state after the stop, and the diagnosis is terminated. If it is determined that the vehicle has stopped after traveling for M hours or more, an instruction is given to perform a diagnostic operation again immediately after stopping in Step 18, and the time until Step 1 starts moving in the same procedure as in Procedure 4 to Procedure 10 is set in Procedure 19 to Measure at 25. In step 25, the movement start time T5 of step 1 is measured, and in step 26, a stop command is given to the escalator to stop the operation.

  Next, the time D2 required from when the current is supplied to the braking device 5 from the data measured in the procedure 21 and the procedure 25 in the diagnostic operation immediately after the stop in the procedure 27 until the step 1 starts to move is calculated to obtain a predetermined area. Store the calculation result. Then, in step 28, the deterioration state of the braking device 5 is diagnosed. As a diagnosis method, the measured D1 and D2 can be compared with the value immediately after the escalator has been installed and the completion of construction is started, and the rate of change can be determined. Generally, if the rate of change is 110% to 150%, it can be determined that the stroke of the movable piece of the braking device 5 is out of the control value. It is also effective to compare D1 and D2 with absolute values, and it can be roughly determined that the control value is out of the range if it is longer than 350 ms to 450 ms.

  As a result, there are generally no passengers or a small number of passengers on the escalator at the time of starting or immediately after stopping, and the change tendency can always be monitored under the same conditions. Furthermore, the diagnostic accuracy can be improved by monitoring both the diagnostic operation measurement immediately after the start of startup from the standby state and the diagnostic operation measurement immediately after the stop after traveling for a certain period of time.

  Based on the diagnosis result in step 28, it is determined whether or not the adjustment work of the braking device 5 is necessary in step 29. If the management value is soon reached or deviated from the management value, the adjustment operation of the braking device 5 is planned in step 30 Thus, the monitoring center 21 is notified and the diagnosis is terminated.

  As described above, since the diagnosis operation command is issued based on the start and stop operations of the facility manager or the technician 2, the diagnosis data is always measured in a stable state where there are no passengers, and the deterioration diagnosis of the highly reliable device is performed. Can do.

  FIG. 7 is a functional block diagram showing another embodiment. In contrast to that shown in FIG. 3, instead of issuing a diagnostic operation instruction based on the start and stop operation instructions by the facility manager or the engineer 2, getting on and off the escalator Surveillance camera 22 that can monitor the state of the mouth and surroundings, image recognition means 23 that determines whether it is safe to start the escalator from the camera image, and remote control to the escalator if it is determined that the escalator can be started safely Remote start command means 24 to which a start command is given is provided.

  Therefore, since it is possible to perform the diagnostic operation of the device as many times as necessary during the standby period from when the escalator is stopped until it is activated, it is possible to prevent variation by increasing the number of diagnoses and averaging The reliability of maintenance can be improved.

The front view which shows the drive equipment structure of the passenger conveyor of one Embodiment by this invention. The perspective view which shows arrangement | positioning of the braking device of the passenger conveyor by one Embodiment. The functional block diagram of the escalator which is one Embodiment. The flowchart figure which shows the diagnostic driving | operation procedure of the escalator which is one Embodiment. The graph which shows the diagnostic driving | operation procedure of the escalator which is one Embodiment. The graph which shows the diagnostic driving | operation procedure of the escalator which is one Embodiment. The functional block diagram of the escalator which is other embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Step 2 Equipment manager or technician 3 Operation panel 4 Control device 5 Braking device 6 Torque variable device 7 Electric motor 8 Reducer 9 Driving chain 10 Step chain 11 Handrail 12 Handrail drive device 13 Handrail drive chain 14 Start command detection means 15 Start determination means 16 Stop command detection means 17 Diagnostic operation command means 18 Diagnostic data measurement means 19 Measurement data storage means 20 Deterioration diagnosis means 21 Remote monitoring center 22 Monitoring camera 23 Image recognition means 24 Remote start command means

Claims (5)

Steps connected endlessly, a handrail that is provided on a railing that is erected on the side of the step and moves in synchronization with the step, and an electric motor that drives the step and the handrail via a chain and a belt And an automatic diagnostic operation device for a passenger conveyor having a control device that controls the start, stop, and rotation speed of the electric motor,
Start command detecting means for detecting that the start command is given;
A diagnostic operation command means for instructing the control device to perform a diagnostic-dedicated operation by acceleration or torque control different from normal startup in order to diagnose the state of the chain and the like;
Diagnostic data measuring means for measuring information monitored by the control device during the diagnostic operation;
An automatic diagnostic operation device for a passenger conveyor, wherein when the start command is given, the diagnosis-only operation is started, and a deterioration state is diagnosed based on the measured value or rate of change of the information .   2. The information monitored by the control device according to claim 1, wherein the information monitored by the control device is a time from when a driving command is given until the step starts to move, or a tension of the chain that drives the handrail. An automatic diagnostic operation device for a passenger conveyor, characterized in that   2. The passenger conveyor automatic diagnosis operation device according to claim 1, wherein when the activation command detected by the activation command detection means is the first activation command of the day, the diagnosis-only operation is started.   2. The automatic diagnosis operation device for a passenger conveyor according to claim 1, wherein the deterioration state is diagnosed immediately after the passenger conveyor stops.   The thing of Claim 1 provided with the monitoring camera which monitors the mode near the entrance / exit of a passenger conveyor, and the image recognition means which recognizes the image of the said monitoring camera, It replaces with the said starting instruction | command being given In addition, when it is determined that there is no person in the vicinity of the entrance / exit, the automatic diagnosis operation device for a passenger conveyor performs diagnosis of the deterioration state.

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