JP2010037066A - Safety device of escalator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safety device of an escalator, capable of preventing an abutting obstacle from being pushed against a protective plate, entangled with the protective plate and nipped between the protective plate and the escalator, when the obstacle abuts against the protective plate. <P>SOLUTION: In this safety device of the escalator provided by arranging a wedge-shaped space 7 between the escalator 1 and the building ceiling 6, a beam or the adjacently crossing other escalator, and arranging the protective plate 8 in the wedge-shaped space 7, there are provided a holding part 9 for holding the protective plate 8 so as to move the protective plate 8 which is pressed against the obstacle A, when the obstacle A abuts against the protective plate 8; a detecting part 21 for detecting the movement of the protective plate 8; and a stoppage means for stopping operation of the escalator 1, based on a detection result by the detecting part 21. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a safety device for an escalator, and in particular, a safety of an escalator in which a wedge-shaped space is provided between an escalator and a building ceiling, a beam, or another escalator that intersects adjacently, and a protective plate is disposed in the wedge-shaped space. Relates to the device.

  Conventionally, a safety device for an escalator has been proposed in which a wedge-shaped space is provided between an escalator and a building ceiling, a beam, or another escalator that intersects adjacently, and a protective plate is disposed in the wedge-shaped space (for example, a patent) Reference 1).

The safety device for an escalator described in Patent Document 1 includes a fixed first protective plate disposed on the back side of the wedge-shaped space and a swingable second protective plate disposed on the front side of the wedge-shaped space. I have. When an escalator user's body, luggage, etc. (hereinafter referred to as an “obstacle”, etc.) abuts on the second protective plate, the second protective plate swings and the obstacle, etc. abuts on the second protective plate In addition to alleviating the impact, the escalator user is informed that there is a risk that an obstacle or the like may be caught in the wedge-shaped space.
JP 2001-72368 A

  However, in the escalator safety device described in Patent Document 1, when an obstacle or the like comes into contact with the first protective plate, the first protective plate does not move and the escalator continues to move. The first protective plate may be pressed, entangled with the first protective plate, or may be sandwiched between the first protective plate and the escalator.

  The present invention has been made to solve such a problem, and its purpose is to prevent the abutting obstacles from being pressed against the protection plate when the obstacles abut against the protection plate. It is an object of the present invention to provide a safety device for an escalator that can prevent entanglement or pinching between a protective plate and an escalator.

  A feature of the embodiment of the present invention is that the safety of an escalator in which a wedge-shaped space is provided between an escalator and a building ceiling, a beam, or another escalator that intersects adjacently, and a protective plate is disposed in the wedge-shaped space. In the apparatus, when an obstacle or the like comes into contact with the protective plate, a holding portion that holds the protective plate so that the protective plate pushed by the obstacle or the like moves, and the movement of the protective plate is detected. And a stop means for stopping the operation of the escalator based on a detection result by the detection unit.

  According to the present invention, when the protection plate that is pushed by an obstacle or the like being in contact with the protection plate moves and the movement is detected by the detection unit, the operation of the escalator is stopped based on the detection result. It is possible to prevent an obstacle or the like that has come into contact with the protective plate from being pressed against the protective plate, entangled with the protective plate, or sandwiched between the protective plate and the escalator.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a configuration diagram of an escalator incorporating a safety device for an escalator according to the present invention.

  The escalator 1 includes a plurality of steps 2 that are connected endlessly and circulate between the upper floor side and the lower floor side, a handrail belt 3 that circulates in synchronization with these steps 2, and the handrail belt 3. And a balustrade 4 for supporting. A drive motor 5 that drives the step 2 and the handrail belt 3 is installed under the floor on the upper floor side.

  A wedge-shaped space 7 is provided between the handrail belt 3 of the escalator 1 and the building ceiling 6 of the building where the escalator 1 is installed, and a protection plate 8 is disposed in the wedge-shaped space 7. The protective plate 8 is made of acrylic resin, and the escalator user's body and luggage (hereinafter referred to as “obstacles”) carried by driving the escalator 1 in the ascending direction (arrow X direction) It is provided in order to prevent being pinched between the building ceiling 6.

  A holding portion 9 is provided on the lower surface of the building ceiling 6 and surrounding the wedge-shaped space 7. A guide groove (not shown) extending in the horizontal direction perpendicular to the moving direction of the escalator 1 is formed in the holding portion 9, and a mounting base 10 is slidably fitted in the guide groove. A protection plate 8 is fixed to the mounting base 10 using bolts 11 and nuts 12. The protection plate 8 is slidable in the horizontal direction orthogonal to the moving direction of the escalator 1 integrally with the mounting base 10.

  As shown in FIGS. 3 and 5, a support piece 13 is fixed to the holding portion 9, and one end of a round bar-like support shaft 14 is fixed to the support piece 13. The support shaft 14 extends in a direction parallel to the guide groove, and a coil spring 15 is attached to the outer periphery of the support shaft 14 so as to extend and contract.

  A protrusion 16 is provided on the mounting base 10, and a support shaft 14 is inserted into an insertion hole 17 formed in the protrusion 16 so as to be relatively slidable. A coil spring 15 attached to the outer periphery of the support shaft 14 is disposed between the protrusion 16 and the support piece 13. At the other end of the support shaft 14, a retaining portion 18 that prevents the protrusion 16 from coming off the support shaft 14 is provided.

  Further, the holding portion 9 is provided with a movable piece 19 that is positioned on the front side in the sliding direction of the mounting base 10 and moves upward when pushed by the sliding mounting base 10. The movable piece 19 is always urged downward by a coil spring 20. At a position above the movable piece 19, a contact type detection switch 21 is provided as a detection unit that is pushed by the movable piece 19 moved upward and is turned on.

  2 and 3, the obstacle base A is not in contact with the protective plate 8, and the mounting base 10 and the protective plate 8 urged by the coil spring 15 are located closest to the handrail belt 3 of the escalator 1. In other words, the case where the escalator 1 is operating normally is shown.

  4 and 5 show the case where the obstacle A or the like abuts against the protection plate 8 and the protection plate 8 pushed by the obstacle A or the like slides away from the handrail belt 3 of the escalator 1 together with the mounting base 10. Is shown.

  When the protective plate 8 is slid in the direction away from the handrail belt 3 integrally with the mounting base 10 and the sliding amount reaches a certain value, the slidable mounting base 10 is positioned in front of the mounting base 10 in the sliding direction. 19 abuts. When the mounting base 10 comes into contact with the movable piece 19, the movable piece 19 is pushed by the mounting base 10 and moves upward, and the detection switch 21 is pushed by the movable piece 19 to be turned ON. When the detection switch 21 is turned on, it is detected that the protective plate 8 has been slid.

  FIG. 6 is a block diagram showing a configuration relating to the control of the safety device for the escalator according to the present invention. A control unit 22 that controls the operation of the escalator 1 is provided, and a drive motor 5, a motor operation unit 23 that operates the drive motor 5, and a detection switch 21 are connected to the control unit 22. Furthermore, the controller 22 is connected to a speaker 24 and an indicator lamp 25 installed in a security department such as a security room.

  The controller 22 stops the operation of the escalator 1 based on the detection result of the detection switch 21, and issues an alarm from the speaker 24 when the operation of the escalator 1 is stopped by the stop device. Alarm means for turning on the lamp 25 is provided.

  When stopping the operation of the escalator 1 based on the detection result of the detection switch 21, the operation of the escalator 1 may be stopped immediately based on the detection result of the detection switch 21. Counting means for counting that detection has continued for a predetermined time period may be provided in the control unit 22 so that when the detection by the detection switch 21 continues for a predetermined time period, the operation of the escalator 1 is stopped by the stopping means. . In the present embodiment, a counting unit is provided.

  FIG. 7 is a flowchart for explaining the operation stop control of the escalator 1 by the stop means.

  It is determined whether or not the escalator 1 is in operation (S1). If the escalator 1 is in operation (YES in S1), it is determined whether or not the detection switch 21 is turned on (S2). . As shown in FIGS. 4 and 5, the obstacle A contacts the protection plate 8, and the protection plate 8 pushed by the obstacle A slides away from the handrail belt 3, and is slid by the sliding mounting base 10. When the movable piece 19 is pushed up and the detection switch 21 is pushed by the pushed up movable piece 19, the detection switch 21 is turned on.

  When the detection switch 21 is turned on (YES in S2), it is determined by the counting means whether or not the ON state has continued for a predetermined time set in advance (S3).

  When the ON state of the detection switch 21 continues for a predetermined time (YES in S3), the operation of the escalator 1 is stopped by the stop unit, an alarm is issued from the speaker 24 by the alarm unit, and the indicator lamp 25 Is turned on (S4). The stop of the operation of the escalator 1 by the stop means, the generation of an alarm from the speaker 24, and the lighting of the indicator lamp 25 may be performed simultaneously, or the operation stop of the escalator 1 may be preceded. When an alarm is issued from the speaker 24 and the indicator lamp 25 is turned on, a guard, a manager or the like who has confirmed that the alarm is issued or the indicator lamp 25 is turned on rushes to the escalator 1.

  In such a configuration, when the obstacle A or the like abuts against the protection plate 8 during the operation of the escalator 1, the protection plate 8 pushed by the abutting obstacle A or the like is integrated with the mounting base 10 from the handrail belt 3. Slide away. Then, the mounting base 10 contacts the movable piece 19, the movable piece 19 moves upward, the detection switch 21 is turned on, and it is detected that the obstacle A or the like has contacted the protection plate 8.

  Even if the obstacle A contacts the protection plate 8 and the protection plate 8 and the mounting base 10 slide away from the handrail belt 3, the contact state of the obstacle A etc. to the protection plate 8 disappears. Then, the protection plate 8 and the mounting base 10 are returned to the position where the protection plate 8 approaches the handrail belt 3 as shown in FIGS. 2 and 3 by the biasing force of the coil spring 15.

  When the ON state of the detection switch 21 continues for a set time, it means that the obstacle A or the like is sandwiched between the protective plate 8 and the escalator 1 and cannot be removed. The operation of the escalator 1 is stopped by the means.

  Accordingly, the obstacle A or the like that has come into contact with the protective plate 8 is pressed against the protective plate 8 or entangled with the protective plate 8 in order to continue the operation of the escalator 1, or between the protective plate 8 and the escalator 1. It is prevented from being pinched.

  In addition, since the operation of the escalator 1 is stopped when a counting means is provided and the detection switch 21 is ON for a set time, the detection switch 21 is turned ON instantaneously, but the obstacle A or the like is a protective plate. If the ON state of the detection switch 21 is released immediately because it is away from 8, the operation of the escalator 1 is not stopped. Thereby, the unnecessary driving | operation stop of the escalator 1 can be avoided.

  When the operation of the escalator 1 is stopped by the stop means, an alarm is output from the speaker 24 and the indicator lamp 25 is turned on in a security guard room or the like. Accordingly, the guards and managers who have confirmed the alarm issuance and the lighting of the indicator lamp 25 can rush to the stopped escalator 1, remove the obstacle A etc. that are in contact with the protective plate 8, and the escalator 1. It is possible to quickly restart the operation.

  In the present embodiment, the case where the protective plate 8 slides in the horizontal direction orthogonal to the moving direction of the escalator 1 when the obstacle A or the like abuts on the protective plate 8 has been described as an example. The moving direction of the protective plate 8 when the obstacle A or the like abuts is not limited to the direction described in this embodiment.

  Further, although the contact detection switch 21 has been described as an example of the detection unit that detects that the obstacle A or the like has contacted the protection plate 8, a non-contact detection unit such as an optical sensor may be used. Good.

It is a block diagram of the escalator incorporating the safety device of the escalator of one embodiment of this invention. It is a front view which shows a protection board, an attachment base, and a handrail belt when an obstruction etc. are not contact | abutting to a protection board. It is a front view which shows a mounting base, a movable piece, and a detection switch when an obstruction does not contact | abut to a protection board. It is a front view which shows a protection board, an attachment base, and a handrail belt in case an obstruction etc. are contact | abutting to the protection board. It is a front view which shows a mounting base, a movable piece, and a detection switch when an obstacle etc. are in contact with the protective plate. It is a block diagram which shows the structure regarding control of the safety device of an escalator. It is a flowchart explaining the operation stop control of the escalator by a stop means.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Escalator 6 Building ceiling 7 Wedge-shaped space 8 Protection plate 9 Holding part 21 Detection switch (detection part)
A obstacles

Claims (3)

In the escalator safety device in which a wedge-shaped space is provided between the escalator and the building ceiling or beam or another escalator that intersects adjacently, and a protective plate is disposed in the wedge-shaped space,
A holding unit for holding the protective plate so that the protective plate pushed by the obstacle moves when an obstacle or the like comes into contact with the protective plate;
A detection unit for detecting movement of the protective plate;
Stop means for stopping the operation of the escalator based on the detection result by the detection unit;
An escalator safety device comprising:   A counting unit that counts that the detection by the detection unit has continued for a predetermined time set in advance is provided, and the operation of the escalator is stopped by the stop unit when the detection by the detection unit has continued for a predetermined time. The escalator safety device according to claim 1.   3. The escalator safety device according to claim 1, further comprising an alarm unit that issues an alarm to a security department when the operation of the escalator is stopped by the stop unit. 4.

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