JP2012017200A - Passenger conveyor control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a passenger conveyor control device which stably keeps the posture of a passenger who gets on a footboard regardless of on passenger weight load in the case of an emergency stop by a safety device.SOLUTION: The passenger conveyor control device has a safety device operation detection means 13 for detecting the operation of the safety device of an escalator, a footboard velocity detector 4 which detects the velocity and the drive direction of a footboard 1, a handrail velocity detector 6 which detects the velocity and the drive direction of a handrail 2, and a stop distance control means 12 for controlling the footboard 1 and the handrail 2 so as to stop at a specified stop distance corresponding to a drive direction of an escalator in the case of the emergency stop operated by the safety device. When the escalator is ascended, the stop distance control means 12 controls the handrail 2 so as to move forward by a specified distance based on a stop position of the footboard 1 and then stop it. When the escalator is descended, the stop distance control means controls the footboard 1 so as to move forward by a specified distance based on a stop position of the handrail 2 and then stop it.

Description

  The present invention relates to a control device for a passenger conveyor that is provided in a passenger conveyor such as an escalator and that controls to stop a tread board and a handrail during operation of a safety device.

  In general, the footboard and handrail of the passenger conveyor are driven by the same electric motor. For this reason, the footboard and the handrail cannot be controlled independently from each other, and the passenger may lose his / her posture in the driving direction due to inertia during an emergency stop due to the operation of the safety device. For this reason, conventionally, there is a passenger conveyor that controls the electric motor that drives the tread board and the electric motor that drives the hand rail to be independent from each other, and stops the tread board and the hand rail with a predetermined time difference at the time of emergency stop. This is proposed in Patent Document 1.

  This Patent Document 1 discloses an endlessly arranged step board, that is, a step motor, a step motor for driving the step, step drive control means for controlling the step motor, and an endless shape that operates in the same direction as the step. In a passenger conveyor control device comprising a handrail motor, a handrail motor for driving the handrail, and a handrail drive control means for controlling the handrail motor, the safety device operates due to an abnormality in the passenger conveyor. The safety device operation detecting means for detecting that the safety device has been operated, the driving direction detecting means for detecting the driving direction of the passenger conveyor, and the safety device operation detecting means detect that the safety device has been operated to emergency stop the step and the handrail. When the driving direction detecting means detects the difference between the step and the handrail according to the driving direction of the passenger conveyor, It is a configuration in which a footstep hand rail stop timing control means for stopping me.

JP 2007-210727 A

  The above-described conventional technology controls the handrail and the step so as to be stopped with a predetermined time difference depending on the driving direction. That is, the step and the handrail are always stopped at the same time difference regardless of the load caused by the passenger on the step. For this reason, the stop distance between the handrail and the step may be different during an emergency stop due to the light load of the passenger, and there is a concern that the passenger on the step may lose balance due to inertia.

  The present invention has been made from the above-described actual situation in the prior art, and its purpose is a passenger conveyor that can keep the posture of the passenger on the step stable regardless of the weight of the passenger's load at the time of emergency stop by the safety device. It is to provide a control device.

  In order to achieve the above-mentioned object, a passenger conveyor control device according to the present invention includes a plurality of step boards arranged and rotated endlessly, and an endless handrail that rotates in the same direction as these tread boards. A stepping plate motor for driving the stepping plate, and a stepping plate speed detection device for detecting the speed and driving direction of the stepping plate motor, provided on a passenger conveyor having a safety device operation detecting means for detecting that the safety device has been operated. A treadle drive control means for controlling the treadle motor, a handrail drive motor for driving the handrail, a handrail drive means for transmitting the driving force of the handrail drive motor to the handrail, In a passenger conveyor control device comprising a handrail drive control means for controlling a handrail drive motor, the safety device operation detection means When the operation of the safety device is detected and the emergency stop of the tread plate and the hand rail is provided, a stop distance control means is provided for controlling the distance between the tread plate and the hand rail at a stop to a predetermined distance. It is a feature.

  In the present invention configured as described above, when the safety device is operated due to an abnormality of the passenger conveyor and the tread board and the handrail are emergency-stopped, the stop distance control means includes the speed of the tread detected by the tread speed detecting device, Based on the speed of the handrail detected by the handrail speed detection device, the treadboard and the handrail are stopped and controlled so that the distance between the treadboard and the handrail becomes a predetermined distance. Accordingly, the posture of the passenger on the step can be kept stable regardless of the weight of the passenger's load.

  Further, the present invention is the above invention, wherein the passenger conveyor is composed of an escalator, and the stop distance control means is configured such that the stop position of the handrail is higher than the stop position of the tread plate when the escalator is in an ascending operation. When the escalator is lowered, the stop control of the tread plate and the handrail is performed so that the stop position of the tread plate is positioned forward of the lowering direction with respect to the lowering direction when the escalator is lowered. It is characterized by doing. In the present invention configured as described above, during an emergency stop due to the operation of the safety device, the passenger grips the handrail so that the body of the passenger himself / herself is in the upper floor during both the ascending operation and the descending operation. It can be kept tilted in the direction, and can be prevented from falling downward.

  Further, the present invention is the above invention, wherein the handrail driving means includes spring force adjusting means for adjusting a biasing force of a spring for improving the speed response of the handrail with respect to driving of the electric motor for driving the handrail. The distance control means controls the spring force adjusting means according to the speed difference between the tread board and the handrail. In the present invention configured as described above, at the time of emergency stop due to the operation of the safety device, the stop distance control means controls the spring force adjusting means according to the speed difference between the tread and the handrail, and is involved in the speed response of the handrail. Since the biasing force of the spring to be adjusted is adjusted, it is possible to prevent the handrail from slipping during the emergency stop.

  According to the present invention, when the operation of the safety device is detected by the safety device operation detecting means, and when the tread board and the hand rail are emergency-stopped, the distance between the tread board and the hand rail at the time of stopping is set to a predetermined distance by the stop distance control means. Because it is controlled, the posture of the passenger on the step can be kept stable regardless of the weight of the passenger's load at the time of emergency stop by such a safety device, ensuring superior safety to the passenger compared to the conventional can do.

It is a block diagram which shows one Embodiment of the control apparatus of the passenger conveyor of this invention. It is a flowchart which shows the process sequence in the stop distance control means with which this embodiment is equipped.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a passenger conveyor control device according to the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing an embodiment of a control device for a passenger conveyor of the present invention. As shown in FIG. 1, the passenger conveyor according to the present embodiment is, for example, an escalator, and includes an endlessly arranged tread 1, an endless handrail 2 that rotates in the same direction as the tread 1, and a safety And safety device operation detecting means 13 for detecting that the device has been operated.

  The control device according to the present embodiment provided in such an escalator includes a tread motor 1 that drives the tread 1, a tread speed detector 4 that detects the speed and driving direction of the tread motor 3, and a tread motor. , A handrail driving motor 5 for driving the handrail 2, a handrail driving means 7 for transmitting the driving force of the handrail driving motor 5 to the handrail 2, and a handrail Handrail drive control means 11 for controlling the drive motor 5 is provided.

  Further, in the present embodiment, when the operation of the safety device is detected by the safety device operation detecting means 13, and when the tread board 1 and the hand rail 2 are brought to an emergency stop, the distance between the tread board 1 and the hand rail 2 at the time of stop is determined. Stop distance control means 12 for controlling the distance to a predetermined distance is provided. This stop distance control means 12 is arranged such that when the escalator is raised, the handrail 2 is stopped before the stop position of the tread plate 1 so that the stop position of the handrail 2 is ahead of the ascending direction. The stop control of the tread board 1 and the handrail 2 is also performed so that the stop position of the tread board 1 is located in front of the lowering position with respect to the lowering direction.

  The handrail driving means 7 includes the spring force adjusting means 8 that adjusts the urging force of the spring 9 that enhances the speed responsiveness of the handrail 2 with respect to the driving of the handrail driving electric motor 5. The distance control means 12 is configured to control the spring force adjusting means 8 in accordance with the speed difference between the tread board 1 and the handrail 2.

  FIG. 2 is a flowchart showing a processing procedure in the stop distance control means provided in the present embodiment.

  In the present embodiment configured as described above, when an abnormality occurs during operation of the escalator and the safety device operates, the safety device operation detecting means 13 detects the operation of the safety device (step S1). The stop distance control means 12 detects the driving direction of the escalator based on signals from the tread board speed detection device 4 and the handrail speed detection device 6 (step S2).

  Here, when the escalator is in the ascending operation, the stop distance control means 12 compares the speeds of the footboard 1 and the handrail 2 based on signals from the footboard speed detecting device 4 and the handrail speed detecting device 6 (step S3).

  If the speed of the handrail 2 is slower than the speed of the tread board 1, the stop distance control means 12 outputs a command to the handrail drive control means 11 to increase the speed of the handrail 2 (step S4). The handrail drive control means 11 to which this command is input controls the handrail drive motor 5 so that the speed of the handrail 2 is higher than the speed of the tread 1 by a constant speed. In step S4, in order to quickly transmit the driving force of the handrail driving motor 5 to the handrail 2, the stop distance control means 12 sets the spring force adjusting means 8 according to the speed difference between the tread board 1 and the handrail 2. Control is performed to increase the urging force of the spring 8 to increase the driving force, thereby assisting to increase the speed responsiveness of the handrail 2 with respect to the electric motor 5 for driving the handrail.

  Thereafter, the stop distance control means 12 outputs a tread board stop command to the tread board drive control means 10 to stop the driving of the tread board driving motor 3 to stop the tread board 1 (step S5). Next, the stop distance control means 12 outputs a stop command for stopping the handrail 2 to the handrail drive control means 11 so that the distance from the stopped tread 1 becomes a predetermined distance, thereby stopping the driving of the handrail drive motor 5. 2 is stopped (step S6).

  When the stop distance control means 12 detects the descending operation of the escalator in the above-described step S2, the stop distance control means 12 is connected to the tread board 1 by the signals from the tread board speed detecting device 4 and the handrail speed detecting device 6. The speeds of the handrails 2 are compared (step S7).

  When the speed of the handrail 2 is higher than the speed of the tread board 1, the stop distance control means 12 outputs a command to the handrail drive control means 11 to reduce the speed of the handrail 2 (step S8). The handrail drive control means 11 receiving this command controls the handrail drive motor 5 so that the speed of the handrail 2 is slower than the speed of the tread 1 by a fixed speed. Here, when the speed of the handrail 2 is higher than the speed of the tread 1 by a certain value, the handrail drive control means 11 outputs a reverse rotation drive command so that the handrail drive motor 5 rotates backward (in the upward direction). Emergency handrail deceleration control.

  Further, in step S8, in order to quickly transmit the driving force of the handrail driving motor 5 to the handrail 2, the stop distance control means 12 sets the spring force adjusting means 8 according to the speed difference between the tread board 1 and the handrail 2. Control is performed to increase the urging force of the spring 8 to increase the driving force, thereby assisting to increase the speed responsiveness of the handrail 2 with respect to the electric motor 5 for driving the handrail.

  Thereafter, the stop distance control means 12 outputs a handrail stop command to the handrail drive control means 11 to stop the drive of the handrail drive motor 5 and stop the handrail 2 (step S9). The stop distance control means 12 outputs a stop command for stopping the tread board 1 to the tread board drive control means 10 so as to stop the driving of the tread board driving motor 3 so that the distance from the stopped handrail 2 becomes a predetermined distance. The tread board 1 is stopped (step S10).

  As described above, in the present embodiment, when the operation of the safety device is detected by the safety device operation detecting means 13 and the tread 1 and the hand rail 2 are stopped in an emergency, the tread 1 and the hand rail 2 at the time of the stop are stopped. Since the distance between them is controlled to a predetermined distance by the stop distance control means 12, the posture of the passenger on the step 1 can be kept stable regardless of the weight of the passenger's load at the time of emergency stop by this safety device, Excellent safety for passengers can be ensured.

  Further, at the time of emergency stop by the safety device, the stop distance control means 12 is configured so that the stop position of the handrail 2 is positioned forward of the stop position of the tread plate 1 with respect to the ascent direction when the escalator is lifted. During the descent operation, stop control of the tread plate 1 and the hand rail 2 is performed so that the stop position of the tread plate 1 is located in front of the descent direction with respect to the stop position of the hand rail 2. By holding the handrail 2, the passenger can keep the body of the passenger himself / herself tilted in the upper floor direction at any time during the ascending operation and the descending operation, and prevents falling down. be able to.

  Further, at the time of an emergency stop due to the operation of the safety device, the stop distance control means 12 controls the spring force adjusting means 8 according to the speed difference between the tread board 1 and the handrail 2 and the spring involved in the speed responsiveness of the handrail 2. Since the urging force 9 is adjusted, it is possible to prevent the handrail 2 from slipping during the emergency stop. Thereby, a highly reliable control device can be realized.

DESCRIPTION OF SYMBOLS 1 Tread board 2 Hand rail 3 Tread board drive motor 4 Tread board speed detection device 5 Hand rail drive motor 6 Hand rail speed detection device 7 Hand rail drive means 8 Spring force adjustment means 9 Spring 10 Tread board drive control means 11 Hand rail drive control means 12 Stop distance control means 13 Safety device operation detection means

Claims (3)

Passenger conveyor having a plurality of treads arranged endlessly and rotating, endless handrails rotating in the same direction as these treads, and safety device operation detecting means for detecting the operation of the safety device Prepared for,
A tread motor for driving the tread, a tread speed detecting device for detecting a speed and a driving direction of the tread motor, a tread driving control means for controlling the tread motor, and a hand rail driving for driving the hand rail A passenger conveyor control device comprising: a motor for driving; a handrail driving means for transmitting a driving force of the handrail driving motor to the handrail; and a handrail driving control means for controlling the handrail driving motor.
When the operation of the safety device is detected by the safety device operation detecting means, and the tread plate and the handrail are brought to an emergency stop, the stop for controlling the distance between the tread plate and the hand rail at the time of stop to a predetermined distance A passenger conveyor control device comprising a distance control means. In the control apparatus of the passenger conveyor of Claim 1,
The passenger conveyor comprises an escalator;
When the escalator is lowered, the stop distance control means is configured to move the handrail during the descending operation of the escalator so that the stop position of the handrail is positioned forward of the ascending direction with respect to the ascending direction. A control device for a passenger conveyor, wherein stop control of the tread plate and the handrail is performed so that the stop position of the tread plate is positioned forward of the descending direction with respect to the stop position. In the control apparatus of the passenger conveyor of Claim 2,
The handrail driving means includes spring force adjusting means for adjusting an urging force of a spring that enhances the speed response of the handrail with respect to driving of the handrail driving electric motor, and the stop distance control means includes the step board and the A control device for a passenger conveyor that controls the spring force adjusting means in accordance with a speed difference of a handrail.

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