JP4728693B2 - Passenger conveyor and braking method thereof - Google Patents

Description

  The present invention relates to a passenger conveyor and its braking method, and more particularly to a passenger conveyor and its braking method with improved emergency stop content.

  Conventionally, for example, as disclosed in Patent Document 1, braking is performed by operating a mechanical brake including an emergency stop to stop the passenger conveyor. On the other hand, as disclosed in Patent Document 2, there is one in which a stop including an emergency is decelerated by an inverter device to be braked.

Japanese Patent Laid-Open No. 10-81481 Japanese Patent No. 3629207

  In the above-mentioned conventional technology, it is stopped after a short time by a mechanical brake or after being sufficiently decelerated by an inverter device. Therefore, if the passenger conveyor is stopped for a short time when the passenger is using it, the passenger who is using the vehicle will fall down due to a sudden stop, and it is necessary to stop it suddenly. There was a problem that could not be done.

  An object of the present invention is to provide a passenger conveyor that can change the stop time depending on the content of the stop and can ensure the safety of passengers.

  In order to achieve the above object, the present invention includes an inverter device that changes the rotational speed of a drive motor that drives an endlessly connected passenger mounted body, and a mechanical brake that brakes the rotation of the drive motor. In the passenger conveyor, a plurality of stop signal generating means, a first stop command for judging a signal from the stop signal generating means and braking in a short time by a mechanical brake, braking by the inverter device for a long time An operation stop determining means for issuing a second stop command and a third stop command for stopping the inverter device in a shorter time than the second stop command by the inverter device.

With the above configuration, the passenger conveyor is stopped in a short time with a mechanical brake when the passenger is not using it or when there is an accident related to the passenger. Since it does not require urgency, it must be slowly stopped slowly, and when it is used by passengers, it can not be said that urgency is not required at all in the case of a stop command due to an abnormal phenomenon sign, It is possible to perform a slow stop that can be braked for a longer time than an emergency stop and shorter than a stop time at the time of a normal stop command . As a result, passengers can be kept safe without unnecessarily endangering the passengers.

  As described above, according to the present invention, it is possible to change the stop time according to the stop content, and to obtain a passenger conveyor that can ensure passenger safety.

  Hereinafter, a passenger conveyor according to the present invention will be described along an escalator 1 shown in FIGS.

  The escalator 1 includes a frame 2 installed across upper and lower floors, a plurality of steps 3 guided in the frame 2 and connected endlessly by a step chain (not shown), and the step chain wound around The driving sprocket 4 and the driven sprocket 5 to be applied, the driving electric motor 6 for driving the driving sprocket 4, the mechanical brake 7 provided in the driving electric motor 6, and the lower transfer of the driving electric motor 6 are controlled. The inverter device 8 includes a balustrade 9 erected along both sides in the moving direction of the precursor step 3, and a moving handrail 10 that is guided by the periphery of the balustrade 9 and moves synchronously with the step 3. .

  A plurality of operation switches 11 are provided below the balustrade 9 in the vicinity of the boarding / alighting portion of the escalator 1 configured as described above, and perform operation stop, operation direction change, operation speed change, and the like. Further, a hand tension detector 12 for detecting the tension of the moving handrail 10 is provided at the lower part of the balustrade 4, and passenger footwear is placed between the step 3 and the skirt guard below the balustrade 9. When pinched, a pinch detector 13 for detecting pinching due to deformation of the skirt guard is installed facing the back side of the skirt guard.

  Then, the signal A from the operation switch 11, the signal B from the tension detector 12, and the signal C from the pinch detector 13 are received by the operation stop judging means 14, thereby operating the mechanical brake 7 or an inverter. It is determined whether braking is performed via deceleration by the device 8.

  In the escalator 1 configured as described above, the operation switch 11, the tension detector 12, and the pinch detector 13 serve as stop signal generating means according to the present invention.

  Next, the braking operation of the escalator 1 configured as described above will be described with reference to the flowchart shown in FIG.

  When stop signals A, B, and C are input while the escalator 1 is in operation, the operation stop determination means 14 detects whether the normal stop signal A from the operation switch 11 or the stop signal B from the tension detector 12 is caught. If it is determined that the stop signal C is from the device 13 and is a stop signal by turning off the operation switch 11 at the end of work, a slow stop is output to the inverter device 8, and the drive motor 6 is loosened by the inverter device 8. Decelerate to a high speed and stop. When the operation stop determination means 14 determines that the stop signal A is not a normal stop signal A, it is determined whether or not the stop is due to a power failure. Let Conversely, when it is not due to a power failure, it is determined whether the stop signal B is from the tension detector 12, and if so, a slow stop that is shorter than the normal stop is output to the inverter device 8, The drive motor 6 is slowly decelerated by 8 and stopped. When the stop signal B is not the stop signal B from the tension detector 12, it is determined whether the stop signal C is from the pinch detector 13 to which the user is related. Output and stop urgently.

  In this way, by changing the type of braking depending on the type of stop signal, in the case of a stop related to the user, it is possible to immediately stop the user and rescue the user immediately. In the case of a stop, it is possible to prevent a user from falling accidents, etc., by stopping suddenly without sudden braking.

  By the way, in the above braking operation, the stop signal C from the pinch detector 13 corresponds to the first stop command for braking in a short time by the mechanical brake according to the present invention, and the normal stop signal A is the inverter according to the present invention. This corresponds to a second stop command for braking for a long time by the device, and a third stop that causes the inverter device to stop the stop signal B from the tension detector 12 due to an abnormal phenomenon precursor in a shorter time than the second stop command. It falls under the directive.

  In the embodiment described above, an escalator has been described as an example of a passenger conveyor, but it can be applied to an electric road as a matter of course. Moreover, although the tension drop of the moving handrail has been described as an example of a sign of an abnormal phenomenon, and the user's footwear has been pinched as an example of requiring an emergency stop, the present invention is not limited thereto.

The block diagram which shows the flow of the braking signal of the passenger conveyor by this invention. The schematic diagram which shows the whole passenger conveyor by this invention. The flowchart which shows the braking operation | movement of the passenger conveyor by this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Escalator, 11 ... Operation switch, 12 ... Tension detector, 13 ... Pinching detector, 14 ... Operation stop judgment means

Claims (2)

In a passenger conveyor comprising a drive motor that drives an endlessly connected passenger mounted body, an inverter device that changes the rotational speed of the drive motor, and a mechanical brake that brakes the rotation of the drive motor, Stop signal generating means, a first stop command for judging a signal from these stop signal generating means and braking in a short time by a mechanical brake, a second stop command for braking in a long time by the inverter device, A third stop command for causing the inverter device to stop in a shorter time than the second stop command by determining the signal from the tension detector of the moving handrail as a stop signal at the time of an abnormal phenomenon, among the stop signal generating means. A passenger conveyor comprising: an operation stop determination means for emitting A passenger conveyor including a drive motor that drives an endlessly connected passenger mounted body, an inverter device that changes the rotation speed of the drive motor, and a mechanical brake that brakes the rotation of the drive motor is stopped. In the event of an emergency, the mechanical brake is operated and stopped, and when the normal operation is stopped, the inverter device is operated and stopped slowly , and the signal from the tension detector of the moving handrail is used as a stop signal to signal the abnormal phenomenon. A braking method for a passenger conveyor, wherein an inverter device is operated to stop the inverter device in a shorter time than when the normal operation is stopped.

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