JP2015101461A - Passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a passenger conveyor equipped with a control device that can notice an alarm when the passenger conveyor is operated in maintenance work without fail and allows the passenger conveyor to be operated only when operated by a proper operation procedure.SOLUTION: The passenger conveyor notifies an alarm by ON-operation of an alarm switch, and is allowed to be operated only when ON-operation of an ascend switch or a descend switch is performed following the ON-operation of the alarm switch. This allows the passenger conveyor to be operated only when the ON-operation of the ascend switch or the descend switch is performed following the ON-operation of the alarm switch, so that the alarm can be previously notified to alert attention and the passenger conveyor can be operated unless the ascend switch or the descend switch is in an ON failure, leading to improvement in safety for maintenance work.

Description

  The present invention relates to passenger conveyors such as escalators and electric roads, and more particularly to passenger conveyors having a maintenance mode function.

  Passenger conveyors such as escalators and electric roads are connected to endlessly moving steps or pallets (hereinafter referred to as treads) and railings provided on both sides of the treads. It is composed of a moving handrail that moves on the balustrade in synchronization with the tread, and transports passengers with a tread that moves from one entrance to the other entrance.

  In such a passenger conveyor, maintenance work is required for inspection and repair of various devices constituting the passenger conveyor. And at the time of the maintenance work of a passenger conveyor, it is common to carry out by switching a passenger conveyor to maintenance mode. In this case, for the purpose of improving maintenance workability and safety, the passenger conveyor is operated and stopped by an operation method different from the normal operation used by passengers.

  The operation method during normal operation used by passengers is as follows. First, an alarm switch, which is one of the operation switches of the passenger conveyor, is turned on, and a buzzer sounds or alerts broadcasts to alert the surroundings. After that, the alarm switch is turned off to stop the buzzer sounding or warning broadcast, and either the up switch or the down switch is turned on, so that the operating direction in which the operation switch is turned on (up or down) The operation of the passenger conveyor is started, and then the up switch or the down switch is turned off. In this case, even if the raising switch or the lowering switch is turned off, the passenger conveyor continues to operate without stopping. Furthermore, the operation of the passenger conveyor can be stopped by turning on the stop switch during the passenger conveyor operation.

  On the other hand, when performing maintenance work by switching to the maintenance mode, the operation is as follows. Also in this case, the alarm switch of the passenger conveyor is turned on, and a buzzer sounds or alerts broadcasts to alert the surroundings. Thereafter, the alarm switch is turned off to stop the buzzer sound or the alert broadcast, and either the ascending switch or the descending switch is turned on to start the operation of the passenger conveyor in the driving direction in which the operation switch is turned on. However, in the normal operation, the passenger conveyor continues to operate even if the ascent switch or the descend switch is turned off. However, in the maintenance mode, the operation is executed only while the ascent switch or the descend switch is on. Accordingly, the operation of the passenger conveyor is stopped by turning off either the ascending switch or the descending switch. In this way, by executing the operation only while the ascending switch or the descending switch is turned on, the tread board of the passenger conveyor can be moved to an arbitrary position and stopped.

  By the way, in such maintenance work, it is strongly required to be able to work safely. For example, if the operation switch or the like is operated with one hand when performing maintenance and inspection work on the passenger conveyor or repairing a failure, there is a possibility that an accident such as an opposite hand being caught by a rotating object around the passenger conveyor may occur. This is because an accident due to an operation error is likely to occur because the movement of the passenger conveyor, the maintenance inspection work, and the repair of the failure are performed at the same time.

  In order to avoid such an accident, for example, in Japanese Patent Application Laid-Open No. 2010-179986 (Patent Document 1), the RUN switch is turned on with one hand and the UP switch in the upward direction or the DOWN in the downward direction with the other hand. By turning on one of the switches, the operation of the passenger conveyor is started in the driving direction in which the operation switch is turned on, and by turning off one of the RUN switch, UP switch or DOWN switch, the passenger conveyor is operated. By stopping, accidents caused by operating with one hand are prevented.

JP 2010-179986 A

  The above-described passenger conveyor in Patent Document 1 operates the passenger conveyor under the AND condition of the RUN switch and the UP switch or the DOWN switch. In this case, the maintenance staff operates the passenger conveyor immediately without any warning. Is not preferable from the viewpoint of safety. For this reason, when operating a passenger conveyor, it is desirable to alert | report an alarm, and it can consider performing the maintenance operation of a passenger conveyor safely by using an alarm switch instead of a RUN switch. In other words, when the passenger conveyor is operated, after warning is issued, the passenger conveyor is operated in the upward or downward direction under the AND condition of the alarm switch and the upward or downward switch.

  By the way, in this type of operation switch, there is a case where dust or a debris of the operation mechanism itself enters into the operation mechanism unit and a solid astringent phenomenon occurs in which the switch remains in the ON state. In addition, there may be a phenomenon in which the ON state is continuously maintained even when the operation switch is turned OFF due to a failure of a wiring or a circuit. These failures are called on failures.

  As described above, in maintenance work, the operation of the passenger conveyor is started by the AND condition of the ON operation of the alarm switch and the raising switch or the lowering switch. Thus, when an ON failure occurs with one of the operation switches being in the ON state, there is a problem that the operation of the passenger conveyor is started only by the ON operation of one operation switch.

  In particular, if the ascending switch or descending switch is on-failed, the AND condition is satisfied at the same time when the alarm switch is turned on to perform normal maintenance work without knowing that the maintenance personnel are on-failed. A phenomenon occurs in which alarm notification and passenger conveyor operation are performed simultaneously. Furthermore, when the control logic that stops the alarm notification when the operation of the passenger conveyor is started is employed, a phenomenon occurs in which the passenger conveyor suddenly starts moving without alarm notification. Thus, it is not preferable from the viewpoint of safety unless measures against on-failure are adopted.

  The purpose of the present invention is to perform a maintenance operation safely by notifying the surroundings by alerting the passenger conveyor during operation of the passenger conveyor and by operating the passenger conveyor only when the normal operation procedure is performed. An object is to provide a passenger conveyor having a maintenance mode function.

  The feature of the present invention is that the alarm is first notified by the on operation of the alarm switch, and the passenger only when the normal operation procedure in which the up switch or the down switch is turned on following the on operation of the alarm switch is taken. The place where the conveyor is operated.

  According to the present invention, since the passenger conveyor is operated only when the raising switch or the lowering switch is turned on following the turning-on operation of the warning switch, the warning is issued in advance to call attention. In addition, since the passenger conveyor can be operated only when the up switch or the down switch is not on-failed, the safety of the maintenance work can be improved.

  For example, when the maintenance switch turns on the alarm switch when the up switch or the down switch is on, it is judged that the alarm switch is turned on in sequence after the up switch or the down switch is turned on. In this case, the passenger conveyor is not operated because it is not a normal operation procedure.

It is a schematic side view which shows the structure of the passenger conveyor to which this invention is applied. It is a block diagram which shows the function structure of the control apparatus shown in FIG. It is a flowchart figure which shows the control method of the passenger conveyor in the maintenance operation | work which becomes embodiment of this invention. It is a time chart figure of the pattern 1 of the flowchart shown in FIG. It is a time chart figure of the pattern 2 of the flowchart shown in FIG. It is the schematic which shows the structure of the operation switch of a passenger conveyor.

  Next, embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the following embodiments, and various modifications and application examples are included in the technical concept of the present invention. Is included in the range.

  First, the configuration of the passenger conveyor will be described with reference to FIG. FIG. 1 is a schematic side view showing a configuration of an escalator as a passenger conveyor.

  As shown in FIG. 1, the escalator which is a kind of passenger conveyor is provided with a plurality of treads 1 connected endlessly. Moreover, the balustrade 3 which supports the movable handrail 2 is standingly arranged by the both right and left sides of the tread board 1. A skirt portion 17 is provided at the lower part of the balustrade 3. Then, the tread board 1 and the moving handrail 2 move in synchronization, so that the passenger is transported from the upper entrance / exit floor board 4 to the lower entrance / exit floor board 5 during the descent operation. Further, during the ascending operation, the passenger is conveyed from the lower entrance / exit floor board 5 to the upper entrance / exit floor board 4. A chain 6 that connects the treads 1 endlessly is wound around the sprocket 7 and the sprocket 8. Further, a drive unit 11 including a motor 9 and a speed reducer 10 is provided in a machine room below the upper entrance / exit floor plate 4. The drive device 11 drives the sprocket 8 via the drive chain 12 to drive the chain 6 and the tread plate 1.

  Further, an upper operation panel 14A is installed near the upper entrance of the skirt portion 17, and a lower operation panel 14B is installed near the lower entrance. As shown in FIG. 2, the upper operation panel 14A and the lower operation panel 14B have alarm switches 18A and 18B for sounding an alarm device 15 such as a buzzer for alerting, ascent switches 20A and 20B for descending operation, and descending. Down switches 21A and 21B for operation, stop switches 19A and 19B for stopping, and the like are provided. The control device 13 is provided with a maintenance switch 16 for switching to the maintenance mode at the time of maintenance work. The maintenance switch 16 may be provided in the machine room.

  Since the configuration and operation of such a passenger conveyor are well known, further explanation is omitted. Next, the function of the passenger conveyor control device 13 will be described with reference to FIG.

  The passenger conveyor is provided with an upper operation panel 14A, a lower operation panel 14B, a maintenance switch 16, a driving device 11, an alarm device 15, and the like, and these are electrically connected to the control device 13 as shown in FIG. Yes. The control device 13 is connected to the upper operation panel 14A, the lower operation panel 14B, and the maintenance switch 16 to receive signals from them, and is connected to the drive device 11 and the alarm device 15 to output drive control signals. Yes.

  The upper control panel 14A and the lower control panel 14B adopt the same configuration, and are provided with alarm switches 18A and 18B, ascent switches 20A and 20B, descending switches 21A and 21B, and stop switches 19A and 19B, respectively.

  The control device 13 includes an operation control unit 22 that drives and controls the driving device 11 and an alarm control unit 23 that drives and controls the alarm device 15.

  An ON signal or an OFF signal from the maintenance switch 16, alarm switches 18A and 18B, ascent switches 20A and 20B, ascent switches 21A and 21B, and stop switches 19A and 19B are input to the operation control unit 22, and the normal mode function It functions to switch the maintenance mode function and to switch the operation start and operation stop of the passenger conveyor.

  The alarm control unit 23 receives an ON signal or an OFF signal from the alarm switches 18A and 18B, and functions to perform an alarm by the alarm device 15, for example, a buzzer sound or an alert broadcast. The alarm control unit 23 may be connected to the operation control unit 22, and the operation of the alarm control unit 23 can be controlled by a control signal from the operation control unit 22.

  Here, the operation switch of the upper operation panel 14A uses a key cylinder type operation switch operated with both hands as shown in FIG. This key cylinder type operation switch includes an alarm switch 18A, a stop switch 19A, an up switch 20A, and a down switch 21A. The operation switch of the lower operation panel 14B has the same configuration.

  This operation switch inserts an operation key into the upper cylinder and turns it to the left or right to turn on the alarm switch 18A or the stop switch 19A. When the operation is stopped, it returns to the center position and turns off. This is a so-called springback type operation switch.

  Similarly, by inserting an operation key into the lower cylinder and turning it to the left or right, the up switch 20A or the down switch 21A is turned on. When the operation is stopped, the operation returns to the center position and the operation is turned off. is there.

  In addition, a key cylinder system may be adopted for each switch, and a push button type switch or a wave type switch (seesaw switch) may be applied as an operation switch.

  With the configuration as described above, the operation of the control device 13 when the next specific maintenance work is performed will be described with reference to the control flowchart shown in FIG. In the following description, the control flow when the operation switch of the upper operation panel 14A is operated will be described. Of course, since the same operation is performed in the case of the lower control panel 14B, the description thereof is omitted.

  In FIG. 3, it is determined whether or not the maintenance switch 16 is turned on in step S30. If the maintenance switch 16 is not turned on, the routine proceeds to step S31 to execute the normal operation mode for transporting passengers, and this control flow ends. If it is determined in step S30 that the maintenance switch 16 has been turned on, the process proceeds to the next step S32 as a transition to the maintenance mode.

  In step S32, since it is a flow of starting operation, it progresses to step S33 on condition that the passenger conveyor is stopping.

  In the present embodiment, the passenger conveyor is operated under the AND condition of the on operation of the alarm switch 18A and the ascending switch 20A or the descending switch 21A as a way of operating the passenger conveyor in the maintenance work. Therefore, it is first determined in step 33 whether or not the alarm switch 18A is turned on.

  When the alarm switch 18A is turned on, the input signal of the alarm switch 18A input to the operation control unit 22 and the alarm control unit 23 of the control device 13 is turned on. If it is determined in step S33 that the alarm switch 18A is not turned on, the process returns to step S33 again to make a similar determination.

  When the alarm switch 18A is turned on in the determination of step S33, the process proceeds to step S34, where an alarm command is output from the alarm control unit 23, and a buzzer sounding or alerting broadcast is performed from the alarm device 15 to notify the alarm. In the following description, the buzzer sounds. Thereby, it is possible to notify maintenance personnel and the like around the passenger conveyor that the passenger conveyor will be operated.

  Next, when an alarm by a buzzer is notified in step S34, the process proceeds to step S35. In step S35, the ascending switch 20A and the descending switch 21A are in an off state, and the alarm switch 18A is stopped for a certain time (for example, about 1 second) or longer. It is determined whether the on state has been changed from the off state to step S36 if applicable, and to step S33 if not applicable.

  Here, in step S35, if the input signal of the up switch 20A or the down switch 21A is on before or before the input signal of the alarm switch 18A changes to the on state, the up switch 20A or the down switch 21A. Is incorporated as a logic that cannot proceed to the subsequent steps.

  Thus, step S35 is a logic that cannot proceed to the next step even if a switch signal other than the alarm switch 18A is input. Therefore, if it is determined in this step S35 that the alarm switch 18A is turned on under a predetermined condition, it is possible to proceed to the subsequent steps.

  In the present embodiment, the judgment criterion for the regular switch operation procedure is set by first determining whether the alarm switch 18A is turned on in step S35. That is, even if an ON operation signal for the up switch 20A or the down switch 21A arrives before the alarm switch 18A, it is not possible to proceed to the next step in step S35.

  Further, in step S35, it is determined whether or not the alarm switch 18A has changed to the on state through the off state for a predetermined time or more, for example, about 1 second or more while the passenger conveyor is stopped. This is to determine whether or not the alarm switch 18A is normally turned on after entering the maintenance mode. In other words, if the input signal of the alarm switch 18A changes from the OFF state to the ON state for a certain period of time (about 1 second) while the passenger conveyor is stopped, the alarm switch 18A is not in an on-failure state but a normal switch operation. It is judged that.

  On the other hand, if the input signal of the alarm switch 18A is in the on state without passing the off state for a predetermined time or more while the passenger conveyor is stopped, it is considered that the alarm switch 18A is on and the process proceeds to the subsequent steps. There is no such thing. Therefore, even if the ascending switch 20A or the descending switch 21A is operated thereafter, the ascending operation command or the descending operation command is not output to the passenger conveyor and the operation is not started.

  As described above, after the input signal of the alarm switch 18A is changed from the OFF state to the ON state for a predetermined time (about 1 second) or more, the normal operation procedure is performed unless the input signal of the ascent switch 20A or the descending switch 21A is in the ON state. It can be judged that. Then, if it is determined by this determination that the state has changed to the ON state through the OFF state for a predetermined time or more, the process can proceed to the next step. Otherwise, the process returns to step S33 again.

  If it is determined in step S35 that the alarm switch 18A has changed to an on state after an off state for a predetermined time or longer, the process proceeds to step S36 to determine whether or not a predetermined time, for example, about 15 seconds has elapsed since the start of the buzzer sounding. Executed. If it is within 15 seconds, it is determined in a subsequent step whether or not the up switch 20A or the down switch 21A is turned on. If it is determined that it has exceeded 15 seconds, the process returns to step S33 to repeat the same operation.

  For this reason, if the ascending switch 20A or the descending switch 21A is not turned on even after 15 seconds, it is considered that the alerting effect to the surroundings has been reduced, and the on operation state of the alarm switch 18A has been maintained for a certain period of time ( Even if the ascending switch 20A or the descending switch 21A is turned on after about 15 seconds), it is determined that the operating procedure is not a normal operation procedure, and the ascending operation command or the descending operation command is not output and the operation is not started. .

  If it is determined in step S36 that the buzzer ringing time is within 15 seconds, then the process proceeds to step S37, where it is determined whether or not the buzzer ringing time has continued for a predetermined time, for example, about 5 seconds. This step S37 is for notifying surrounding maintenance personnel and the like that the operation of the passenger conveyor is started by ringing the buzzer for a predetermined time. For this reason, as long as this ringing time is not exceeded, it cannot proceed to the next step.

  Here, when the buzzer sounds, attention can be drawn to the surroundings, so that the maintenance staff thinks that the passenger conveyor can be operated, and turns on the ascent switch 20A or the descending switch 21A. In this case, there are a case where the rising switch 20A or the lowering switch 21A is turned on after 5 seconds have elapsed from the start of the buzzer and a case where the raising switch 20A or the lowering switch 21A is turned on before 5 seconds have passed. .

  When the up switch 20A or the down switch 21A is turned on after 5 seconds have elapsed, it is first determined in step S38 whether the up switch 20A has been turned on. If it is determined in this step that the raising switch 20A is turned on, the process proceeds to step S40. If it is determined that the raising switch 20A is not turned on, the process proceeds to step S39.

  In step S39, it is determined whether or not the lowering switch 21A is turned on. If it is determined that the lower switch 21A is turned on in this step, the process proceeds to step S41. If it is determined that the lower switch 21A is not turned on, the process returns to step S36 and the same operation is repeated.

  On the other hand, if the ON operation of the up switch 20A or the down switch 21A is performed before 5 seconds elapses, this information is stored in the storage memory of the operation control device 22 (for example, the RAM area of the control microcomputer) and used later. Will be. When 5 seconds elapse, the on-operation information of the ascending switch 20A or the descending switch 21A is read, and step S38 or step S39 is executed. The reason why steps S38 and S39 are executed after the elapse of 5 seconds is to ensure that the buzzer is sounded and the attention is cautioned.

  Next, if it is determined in step S38 that the ascent switch 20A has been operated, step S40 is executed. If it is determined in step S39 that the lower switch 21A has been operated, step S41 is executed. Steps S40 and S41 are control steps that perform the same operation, and stop the buzzer sounding as if the alerting to the surroundings has been completed.

  When the sounding of the buzzer is stopped in step S40, the process proceeds to step S42, and the ascending operation for moving the passenger conveyor treads and moving handrails is started. Similarly, when the buzzer is stopped in step S41, the process proceeds to step S43, and the descending operation of the passenger conveyor is started.

  Here, in this embodiment, the buzzer is stopped in steps S40 and S41 and the passenger conveyor ascending operation and starting of the descending operation in steps S42 and S43 are substantially the same time. For this reason, there is a problem that maintenance personnel cannot grasp the buzzer ringing stop time and accordingly the passenger conveyor operation start time cannot be grasped. .

  For this reason, as a method to make it easier for maintenance personnel to know the operation start time of the passenger conveyor, a predetermined time (several seconds) is set after stopping the buzzer ringing, and the passenger conveyor is operated after this time has elapsed. You may make it start. As a result, the above-mentioned problems can be addressed. That is, since the operation of the passenger conveyor is started after a short interval after the buzzer stops ringing, it becomes easy to grasp the operation start time, and it becomes easy for the maintenance personnel to make psychological preparations for the operation start of the passenger conveyor.

  Further, it is possible to provide a new step for determining that the operation procedure is incorrect when both the input signals of the ascending switch 20A and the descending switch 21A are on between the steps S38 and S39 and the steps S40 and S41. This is based on the assumption that one of the ascending switch 20A and the descending switch 21A fails to turn on during a series of steps. For example, whether or not both switches are on after the “YES” determination in step S38 and step S39. If both switches are determined to be in the on state, it is determined that the operation procedure is not normal, and the ascending operation command or the descending operation command is not output so that the operation is not started.

  In a state where the passenger conveyor is operated in the upward direction or the downward direction in step S42 or step S43, the process proceeds to step S44 or step S45, and it is determined whether or not a stop command is issued from the upper operation panel 14A. In this case, the operation start condition of the passenger conveyor by the operation switch is an AND condition of the alarm switch 18A and the up switch 20A or the down switch 21A.

  Therefore, since the passenger conveyor is driven in the upward direction before proceeding to step 44, the alarm switch 18A and the upward switch 20A are in the ON operation state. When the alarm switch 18A or the ascent switch 20A is turned off from this ascending operation state, this operation is detected in step S44, and the process proceeds to step S46. Further, the process proceeds to step 46 also when the stop switch 19A is turned on.

  In step 46, since the AND condition of the alarm switch 18A and the ascent switch 20A is not satisfied, an operation stop command is output from the operation control unit 22, and the drive device 11 is thereby stopped. When the stop switch 19A is turned on, a stop command is output from the operation control unit 22 with priority over the alarm switch 18A and the ascent switch 20A. When this stop command is output, the driving device 11 is stopped, and as a result, the operation of the passenger conveyor is stopped.

  Since the stop switch 19A is given a preferential level, for example, a logic for determining whether or not the stop switch 19A is turned on is added between steps S42 and S43 and steps S44 and S45. In this case, the process can proceed to step 46. In this case, determination of the on operation of the stop switch 19A in S44 and S45 can be omitted.

  Thus, by turning on both the alarm switch 18A and the lift switch 20A, the passenger conveyor can be operated to move the tread board 1, and one of the alarm switch 18A and the lift switch 20A is turned off. Alternatively, by turning on the stop switch 19A, the tread board 1 of the passenger conveyor can be moved to a predetermined position and stopped.

  Similarly, when the passenger conveyor is operating in the downward direction, the operation states of the alarm switch 18A, the downward switch 21A, and the stop switch 19A are determined in step S45, and the same operation as in step S44 is performed. It has become.

  In the state where the passenger conveyor is in operation, the elevator switch 20A or the lowering switch 21A is turned off to stop the passenger conveyor, and then the raising switch 20A or the lowering switch 21A is again operated while the alarm switch 18A is kept on. When the switch is turned on, the input signal of the alarm switch 18A is not turned off for a certain time (about 1 second). Therefore, it is determined in step S35 that the operation procedure is incorrect, and the ascending operation command or the descending operation is performed. The command is not output and the operation is not started.

  In general, an upper operation panel 14A is installed on the upper side of the passenger conveyor, and a lower operation panel 14B is installed on the lower side. In such a case, when the combination of the alarm switch 18A, the ascending switch 20A, and the descending switch 21A on the upper operation panel 14A is operated, the operation operation and the stop operation are executed as effective, and the alarm switch 18B on the lower operation panel 14B is executed. When the combination of the ascending switch 20B and the descending switch 21B is operated, the driving operation and the stopping operation are executed as valid.

  Even if there is an operation of combining the operation switches of the upper operation panel 14A and the operation switches of the lower operation panel 14B, this is not effective. This negates operations by different maintenance personnel on the upper and lower sides of the passenger conveyor.

  However, the stop switches 19A and 19B provided on the upper operation panel 4A and the lower operation panel 14B are preferentially processed in common. Therefore, if the stop switch 19B of the lower operation panel 14B is turned on while the passenger conveyor is being operated by the upper operation panel 14A, the operation control unit 22 gives priority to this and stops the passenger conveyor. Therefore, if the stop switch 19A or the stop switch 19B is turned on while the passenger conveyor is stopped, the operation of the passenger conveyor is not started, and the stop switch 19A or the stop switch 19B is turned on during the operation of the passenger conveyor. As a result, the operation of the passenger conveyor is stopped.

  4A and 4B show time charts for operation and stop of the passenger conveyor in this embodiment. FIG. 4A is a time chart when the rising switch 20A or the lowering switch 21A is turned on while the buzzer sounds within 5 seconds, and FIG. 4B is the rising switch 20A or the lowering after the buzzer sounds for more than 5 seconds. It is a time chart when the switch 21A is turned on. In this figure, the operation by the upper operation panel 14A is also shown.

  In FIG. 4A, when the alarm switch 18A is turned on at time TA-1 from the off state for about 1 second, the buzzer starts sounding in response thereto. Even if the ascending switch 20A or the descending switch 21A is turned on at the time TB-1 during the ringing, the passenger conveyor is not started. When the buzzer continues to sound for 5 seconds, the buzzer is stopped at time TC-1 and the operation of the passenger conveyor is started. Further, when the ascending switch 20A or the descending switch 21A is turned off at time TD-1, the AND condition is not satisfied, the passenger conveyor is stopped, and the buzzer is restarted. In this case, as described above, the passenger conveyor is stopped even if the alarm switch 18A is turned off.

  Next, at time TE-1 when the passenger conveyor is stopped, even if the ascending switch 20A or the descending switch 21A is turned on again, the alarm switch 18A continues to be on, so the control logic of step S35 determines the passenger conveyor Operation is not resumed. In FIG. 4A, as described above, the passenger conveyor may be started after a predetermined time after the buzzer stops ringing.

4B, when the alarm switch 18A is turned on at time TA-2 from the off state for about 1 second, the buzzer starts sounding in response thereto. Then, after the time TC-2, which is a ringing time of 5 seconds, when the ascending switch 20A or the descending switch 21A is turned on at the time TB-2, the buzzer is stopped and the passenger conveyor is immediately operated. It will be started. If the alarm switch 18A is turned off at time TD-2, the AND condition is not satisfied and the passenger conveyor is stopped. In this case, since the alarm switch 18A is turned off, the buzzer is not restarted.
In this case as well, the passenger conveyor is stopped even if the ascending switch 20A or the descending switch 21A is turned off as described above.

  Next, at time TE-2 when the passenger conveyor is stopped, even if the alarm switch 18A is turned on again, the buzzer sounds, but the up switch 20A or the down switch 21A continues to be on. The operation of the passenger conveyor is not resumed by the control logic of S35. That is, in step S35, since the input signal of the ascending switch 20A or the descending switch 21A is in the on state at or before the time when the input signal of the alarm switch 18A changes to the on state, it is determined that it is different from the normal operation procedure. Because it is done. In FIG. 4B, the buzzer may be stopped after ringing for 5 seconds.

  Moreover, although applied in the maintenance mode during the operation period after installation in this embodiment, it can also be used in the maintenance mode when installing the passenger conveyor. Furthermore, the present invention can be applied only to the maintenance mode when installing the customer conveyor from the viewpoint of safety.

  Furthermore, when the motor of the driving device uses inverter control, the acceleration or driving speed of the passenger conveyor in the maintenance mode should be made smaller than the acceleration or driving speed in the normal mode used by the passenger. Is also possible. Thereby, the safety in the maintenance work can be further improved.

  As described above, according to the present invention, a normal operation procedure is performed in which an alarm is notified by an on operation of an alarm switch and an up switch or a down switch is turned on following the on operation of the alarm switch. It was configured to operate the passenger conveyor only when According to this, since the passenger conveyor is operated only when the raising switch or the lowering switch is turned on following the operation of turning on the warning switch, the warning can be notified in advance to call attention. In addition, since the passenger conveyor can be operated only when the up switch or the down switch is not on-failed, the safety of the maintenance work can be improved.

  DESCRIPTION OF SYMBOLS 1 ... Step, 2 ... Moving handrail, 3 ... Railing, 4 ... Entrance floor board, 5 ... Exit floor board, 6 ... Chain, 7, 8 ... Sprocket, 9 ... Motor, 10 ... Reduction gear, 11 ... Drive apparatus, 12 ... Drive chain, 13 ... Control device, 14A ... Upper operation panel, 14B ... Lower operation panel, 15 ... Alarm device, 16 ... Maintenance switch, 17 ... Skirt, 18A ... Alarm switch, 18B ... Alarm switch, 19A ... Stop switch , 19B: Stop switch, 20A: Up switch, 20B: Up switch, 21A: Down switch, 21B: Down switch, 22: Operation control unit, 23: Alarm control unit.

Claims (10)

A plurality of endlessly connected treads that move between one entrance and the other entrance, a balustrade provided on both sides of the tread, and a movement that moves on the balustrade in synchronization with the tread An alarm switch for operating the handrail, the operation of the stepping board and the moving handrail, an alarm notification associated therewith, and an operation stop, an up switch and a down switch, a stop switch, and a maintenance switch for switching to the maintenance mode; , A driving device for driving the step board and the moving handrail, an alarm device for informing an alarm, and an ON operation signal and an OFF operation signal from each switch are input, and a drive control signal is output to the driving device and the alarm device A passenger conveyor equipped with a control device,
The control device notifies an alarm when the alarm switch is turned on in a state set to a maintenance mode by the maintenance switch, and in the state where the alarm switch is turned on, subsequently, the rising switch or the Only when the lowering switch is turned on, it is determined as a normal operation procedure, and the operation of the step board and the moving handrail is started in the driving direction in which the ascent switch or the lowering switch is turned on. Passenger conveyor. In claim 1,
The said control apparatus judges that the said alarm switch was normally operated, only when the said alarm switch changed from an OFF state to an ON state, The passenger conveyor characterized by the above-mentioned. In claim 1 or claim 2,
The control device notifies an alarm when the alarm switch is turned on, stops the alarm notification when the up switch or the lower switch is turned on, and starts the operation of the footboard and the moving handrail. And passenger conveyor. In claim 1 or claim 2,
When the alarm switch is turned on, the control device notifies the alarm for a predetermined time, and when the up switch or the down switch is turned on during the alarm notification, when the alarm notification ends, Passenger conveyor characterized by starting operation of tread and said moving handrail. In any one of Claims 1 thru | or 4,
The control device determines that the operation procedure is not a normal operation procedure before the alarm switch is turned on, or when the signal of the ascending switch or the descending switch is in an on state at the time of the on operation. Passenger conveyor, characterized by not starting the operation. In any one of Claims 1 to 5,
The control device determines that the alarm switch is not in a normal operation procedure when the alarm switch is turned on for a predetermined time, and the elevating switch or the lowering switch is turned on after the elapse of the predetermined time. Passenger conveyor characterized by not starting operation of treads and said moving handrail. In any one of Claims 1 thru | or 6,
The control device determines that the operation procedure is not a normal operation procedure and does not start the operation of the tread plate and the moving handrail when both signals from the up switch and the down switch are in an on state. Passenger conveyor. In any one of Claims 1 thru | or 7,
When the stop switch is turned on, the control device gives priority to the stop operation, and does not start if the tread and the moving handrail are stopped, and the tread and the moving handrail are in operation. Passenger conveyor characterized by stopping operation if any. In any one of Claims 1 to 8,
The control device is configured to turn off the ascent switch or the descending switch from a state where the alarm switch and the ascent switch or the descending switch are turned on to stop the operation of the step board and the moving handrail. A passenger conveyor characterized in that when the up switch or the down switch is turned on again while continuing the on operation, it is determined that the operation procedure is not a normal operation procedure, and the operation of the step board and the moving handrail is not started. In any one of Claims 1 to 9,
The alarm switch, the stop switch, the ascending switch, or the descending switch are provided on the first operation panel disposed near the one entrance / exit and the second operation panel disposed near the other entrance / exit. ,
The control device is configured to operate the alarm switch, the up switch or the down switch provided on the first operation panel, and the alarm switch, the up switch or the down switch provided on the second operation panel. Regarding the operation, the state of the operation is individually determined, and the operation of each stop switch provided on the first operation panel and the second operation panel is performed on the first operation panel and the second operation panel. The operation state is commonly determined for the operation panel, and when the stop switch of either the first operation panel or the second operation panel is turned on, the step board and the moving handrail are stopped. The passenger conveyor is characterized in that the operation is not started if the vehicle is in the middle, and the operation is stopped if the footboard and the moving handrail are in operation.

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