JP2010265057A - Device for detecting deviation of moving handrail of escalator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for detecting the deviation of a moving handrail of an escalator by a simple structure without a contact part in a detection mechanism, capable of preventing the generation of aging abrasion, and greatly reducing a frequency for requiring the regular work of adjustment, maintenance, replacement or the like. <P>SOLUTION: The device for detecting the deviation of the moving handrail of the escalator includes the moving handrail 3 slidably engaged with a handrail guiding rail 4, and circulating and moving in synchronization with the operation of the escalator 1, and a light detecting means 7 arranged at a position opposed to the inner surface of the moving handrail 3 of the handrail guiding rail 4, and detecting light with a light amount greater than or equal to a prescribed light amount. When the light with the light amount greater than or equal to the prescribed light amount is detected by the light detecting means 7, the deviation of the moving handrail 3 from the handrail guiding rail 4 is detected. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a moving handrail departure detecting device for an escalator.

  The moving handrail of the escalator is likely to deviate from the handrail guide rail due to wear of the handrail guide rail or hardening due to aging of the moving handrail.

  In the conventional moving handrail deviation detecting device for an escalator that detects the deviation of the moving handrail, the deviation of the moving handrail from the handrail guide rail is detected by a mechanical switch. In the escalator having a handrail guide rail (guide frame) provided on the outer edge of the escalator and having a C-shaped moving handrail that circulates and is guided by the handrail guide rail, the handrail guide rail is vertically inserted and supported by the handrail guide rail. A connecting rod that presses a contact provided on the inside of the movable handrail, an urging body such as a coil spring that raises the connecting rod based on a deviation of the movable handrail from the handrail guide rail, and A device including a mechanical detection switch that operates based on a rise is known (see, for example, Patent Document 1).

Similarly, in an escalator provided with a moving handrail (handrail belt) and a handrail guide rail (guide rail) as a mechanical switch, a micro switch (handrail belt) is provided between the moving handrail and the handrail guide rail. A micro switch roller that interlocks with the contact point of the micro switch is brought into contact with the back surface of the movable handrail in a state of being biased toward the surface, and the handrail guide rail of the movable handrail is provided. It is also known that the micro switch detects a change in the distance between the back surface of the moving handrail and the handrail guide rail due to deviation from the position of the microswitch roller (for example, Patent Document 2). reference).
When a deviation of the moving handrail is detected by these detection devices, an emergency operation such as stopping the operation of the escalator or sounding a warning sound is generally performed.

Japanese Unexamined Patent Publication No. 04-039291 Japanese Patent Laid-Open No. 06-255773

However, in any of the conventional moving handrail departure detecting devices for escalators disclosed in the above patent documents, the deviation of the moving handrail is detected by a mechanical structure using a connecting rod, a micro switch roller, or the like. Therefore, the configuration is complicated. Therefore, it is necessary to perform mechanical adjustment work and maintenance work regularly, and it is also necessary to replace parts due to aging of the contact part of the detection mechanism. There is a problem that it is complicated and time-consuming.
Further, if these adjustments, maintenance, replacement, and the like are neglected, there is a problem that the detection accuracy of the deviation of the moving handrail is lowered, and erroneous detection is likely to occur.

The present invention has been made to solve such problems, and a first object is to provide a simple configuration, a detection mechanism that does not have a contact portion, and is unlikely to cause aged wear, and is constantly adjusted. Thus, an escalator moving handrail departure detecting device capable of greatly reducing the frequency of maintenance, replacement, and the like is required.
The second object is to obtain a moving handrail departure detecting device for an escalator that can accurately detect the moving handrail departure and is less likely to cause erroneous detection.

  In the escalator moving handrail departure detecting apparatus according to the present invention, the movable handrail slidably engaged with the handrail guide rail and circulated in synchronization with the operation of the escalator, and the inner surface of the movable handrail of the handrail guide rail And a light detection means for detecting light of a predetermined light quantity or more, and when the light detection means detects light of the predetermined light quantity or more, the handrail guide of the moving handrail The deviation from the rail is detected.

The present invention relates to a moving handrail departure detecting device for an escalator, which is slidably engaged with a handrail guide rail and circulates in synchronization with the operation of the escalator, and faces the inner surface of the handrail guide rail. A light detecting means for detecting light of a predetermined light quantity or more, and when the light detection means detects light of the predetermined light quantity or more, from the handrail guide rail of the moving handrail The configuration is simple, the detection mechanism has no contact part, and it is difficult for aged wear to occur, and the frequency of routine adjustment, maintenance, replacement, etc. is required. There is an effect that it can be greatly reduced.
In addition, it is possible to accurately detect the deviation of the moving handrail, and there is also an effect that it is difficult for erroneous detection to occur.

It is explanatory drawing which shows the whole structure outline of the escalator to which the moving handrail deviation detection apparatus which concerns on Embodiment 1 of this invention is applied. It is a principal part expanded sectional view in the normal time of the moving handrail part which concerns on Embodiment 1 of this invention. It is a circuit diagram which shows the circuit structure of the detection part of the moving handrail deviation detection apparatus which concerns on Embodiment 1 of this invention. It is a principal part expanded sectional view at the time of the handrail departure | shift of the moving handrail part which concerns on Embodiment 1 of this invention.

  The present invention will be described with reference to the accompanying drawings. Throughout the drawings, the same reference numerals indicate the same or corresponding parts, and redundant description thereof will be simplified or omitted as appropriate.

Embodiment 1 FIG.
1 to 4 relate to Embodiment 1 of the present invention, FIG. 1 is an explanatory diagram showing an overall configuration outline of an escalator to which a moving handrail deviation detecting device is applied, and FIG. 2 is a normal state of the moving handrail portion. FIG. 3 is a circuit diagram showing a circuit configuration of a detection unit of the moving handrail departure detecting device, and FIG. 4 is an enlarged cross-sectional view of the main part when the moving handrail part departs from the handrail.
In the figure, reference numeral 1 denotes an escalator main body that conveys a user between the installed upper and lower floors. Inside the escalator main body 1, steps (not shown) on which the user gets on are connected endlessly and circulated. A balustrade 2 is erected on both sides of the escalator body 1, and an endless moving handrail 3 that circulates and moves in synchronization with the steps is provided on the outer periphery of the balustrade 2.
These steps and the circulating movement of the moving handrail 3 are driven by a drive motor (not shown).

A handrail guide rail 4 for guiding the movement of the moving handrail 3 is provided at the peripheral edge of the balustrade 2. The handrail guide rail 4 is formed in a substantially oval cross section, and the movable handrail 3 is formed in a substantially C-shaped cross section. The movable handrail 3 covers at least the upper surface and both side surfaces of the handrail guide rail 4, The handrail guide rail 4 is slidably engaged.
The movable handrail 3 is exposed at the outer periphery of the balustrade 2 on the forward path side, that is, the upper side and the front and rear side, and penetrates into the skirt guard 5 provided on the lower side of the balustrade 2 on the return path side, that is, the lower side.

Non-penetrating mounting holes 6 are provided at predetermined intervals along the moving direction of the moving handrail 3 at positions facing the inner surface of the moving handrail 3 of the handrail guide rail 4, particularly on both side surfaces here. The mounting hole 6 is provided in a portion of the handrail guide rail 4 where the moving handrail 3 is exposed to the outside on the outer periphery of the balustrade 2, and the moving handrail 3 is in the skirt guard 5 and is not exposed. It is not provided in the part.
In the mounting holes 6, light detection means 7 made of CdS cells or CdSe cells are embedded in directions that allow detection of light from the openings of the mounting holes 6. Note that the photodetection means 7 can use various photosensors such as a photodiode, a phototransistor, and a photomultiplier in addition to the CdS cell and the CdSe cell.

  As shown in the circuit diagram of FIG. 3, these light detection means 7 are connected in parallel and further connected in series to the escalator stop relay 8. These light detection means 7 do not pass electricity in a state where light of a predetermined light quantity or more is not detected, but are energized when light of a predetermined light quantity or more is detected. When the escalator stop relay 8 is energized by being energized, the drive motor is stopped and the operation of the escalator is stopped. In this way, the escalator stop relay 8 constitutes an operation stop means for stopping the operation of the escalator when light is detected by the light detection means 7.

In the moving handrail departure detecting apparatus configured as described above, the moving handrail 3 covers both side surfaces of the handrail guide rail 4 at the normal time, that is, when the moving handrail 3 is not deviated as shown in FIG. Therefore, the opening of the mounting hole 6 is also shielded by the moving handrail 3, and light from the light source 9 such as illumination or natural light at the escalator installation location is directed to the light detection means 7 in the mounting hole 6. Never reach (Figure 2).
Accordingly, the circuit is open in any of the light detection means 7, and the escalator stop relay 8 is not excited and the escalator continues to operate.

On the other hand, when the moving handrail 3 deviates from the state of engagement with the normal handrail guide rail 4, the relationship between the handrail 3 and the handrail guide rail 4 on at least one of both side surfaces of the handrail guide rail 4 as shown in FIG. Mismatch.
Accordingly, the light from the light source 9 reaches the opening of the mounting hole 6 provided on the side surface of the handrail guide rail 4 on the side where the engagement is disengaged without being blocked by the moving handrail 3, and this light is mounted. When the light detection means 7 in the hole 6 is reached, light is detected by the light detection means 7 (FIG. 4).
When light is detected by the light detecting means 7, the light detecting means 7 conducts electricity, energizes the escalator stop relay 8, the escalator stop relay 8 is excited, and the escalator is operated. Stopped.

  In addition, due to the stress applied to the moving handrail 3, the deviation of the moving handrail 3 from the handrail guide rail 4 is likely to occur particularly in a concave curved portion when the circulation path of the moving handrail 3 is viewed as one closed curve (for example, (A part in FIG. 1). Therefore, here, a plurality of light detection means 7 are provided at predetermined intervals along the moving direction of the moving handrail 3. However, when the number of light detection means 7 to be installed is limited, the light detection means 7 is particularly provided in the concave curved portion. It is good to do so.

  Further, here, the deviation detection of the moving handrail in the escalator has been described, but it goes without saying that it can be applied not only to the escalator but also to all man conveyors including moving sidewalks. In addition, as is clear from the above description, the moving handrail is made of a light-shielding material.

In the escalator moving handrail departure detecting device configured as described above, in the escalator having the moving handrail that slidably engages with the handrail guide rail and circulates in synchronization with the operation of the escalator, a predetermined light amount or more. A light detecting means for detecting light is disposed at a position facing the inner surface of the moving handrail of the handrail guide rail, and when the light detecting means detects a light of a predetermined light amount or more, the light from the handrail guide rail of the moving handrail is detected. By detecting deviations, the structure is simple, there is no contact part in the detection mechanism, it is difficult for aged wear, etc., and the frequency of routine adjustment, maintenance, replacement, etc. is greatly reduced. Can do.
Further, it is possible to accurately detect the deviation of the moving handrail without contacting the moving handrail, and it is difficult for erroneous detection to occur.

By providing the light detection means in the mounting hole provided in the handrail guide rail, the possibility of erroneous detection due to light leaking from the moving handrail and the handrail guide rail is reduced, and the detection accuracy can be further improved. .
Further, further improvement in detection accuracy can be expected by providing the light detection means at the concave curved portion of the circulation path of the moving handrail, which is a position where the moving handrail deviation from the handrail guide rail is particularly likely to occur.

Furthermore, since the moving handrail departure detection is performed by the light detecting means made of a relatively inexpensive and easy-to-attach material such as a CdS cell, a plurality of the light detecting means may be provided along the moving direction of the moving handrail. This is easy, and by doing so, detection accuracy can be improved.
In addition, when the light detecting means detects light of a predetermined light amount or more, that is, when the deviation of the moving handrail from the handrail guide rail is detected, the operation stop means stops the operation of the escalator, thereby moving the handrail. Thus, it is possible to prevent accidents and damage to the moving handrails that occur when the escalator continues to be operated while deviating from the handrail guide rail.

DESCRIPTION OF SYMBOLS 1 Escalator body 2 Railing 3 Moving handrail 4 Handrail guide rail 5 Skirt guard 6 Mounting hole 7 Light detection means 8 Escalator stop relay 9 Light source

Claims (6)

A movable handrail that slidably engages with the handrail guide rail and circulates in synchronization with the operation of the escalator,
A light detection means that is disposed at a position of the handrail guide rail facing the inner surface of the moving handrail and detects light of a predetermined light amount or more,
The moving handrail departure detecting device for an escalator, wherein a deviation of the moving handrail from the handrail guide rail is detected when the light detecting means detects light of the predetermined light amount or more.   The escalator moving handrail deviation detecting device according to claim 1, wherein the light detecting means is provided in an attachment hole provided in the handrail guide rail.   The escalator moving handrail deviation detecting device according to claim 1, wherein the light detecting means is provided in a concavely curved portion of a circulation path of the moving handrail.   The escalator moving handrail deviation detecting device according to any one of claims 1 to 3, wherein a plurality of the light detecting means are provided along a moving direction of the moving handrail. The handrail guide rail has a substantially oval cross section,
The moving handrail has a substantially C-shaped cross section, and is slidably engaged with the handrail guide rail so as to cover at least the upper surface and both side surfaces of the handrail guide rail,
The escalator moving handrail deviation detecting device according to any one of claims 1 to 4, wherein the light detecting means is provided on both side surfaces of the handrail guide rail.   The escalator according to any one of claims 1 to 5, further comprising an operation stop unit that stops the operation of the escalator when the light detection unit detects light of the predetermined light amount or more. Moving handrail departure detection device.

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