JPS63252896A - Safety device for escalator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Object of the Invention] (Field of Industrial Application) The present invention relates to a safety device for an escalator, and particularly to a safety device for an ascending escalator that is connected to the upper floor of a building or to other escalators that intersect adjacently. This invention relates to a safety device for an escalator that can reliably prevent passengers who lean into the triangular space formed between the escalators from being caught in the space.

(Prior Art) In general, an escalator, as shown in FIG. 2 and a movable handrail 4 that moves at the same speed and in the same direction, these are installed on the floors 5 and 6 on the lower and upper floors of the building, and are used to transport passengers between the upper and lower entrances 1. It is designed to be transported.

Now, in order to minimize the installation area of this type of escalator, the upper floor 6 of the building and the handrail 4 are often installed close to each other. A triangular space 7 is formed between the movable handrail 4 and the movable handrail 4. For this reason, if a passenger leans a part of their body, such as their head, outside the moving hand or seat 4 while the escalator is operating upward, there is a risk of being caught in the triangular space 7 and seriously injured. There is. Although not shown, the same applies to the triangular space formed between the exterior of one escalator and the moving handrail of the other escalator, which are installed adjacently and intersectingly.

Therefore, in order to prevent the passenger's body from being caught in such a triangular space 7, a conventional method is shown in FIG. 6(a).

As shown in (b), a parapet 3 on the upper floor 6 of the building or on the movable handrail 4 side is placed in the triangular space 7.
A triangular protection plate (usually referred to as a triangular guard plate or wedge guard) 8 was suspended or supported from the fixed part of the holder. As a result, if a passenger leans out of the handrail 4 and approaches the top of the triangular space 7, a part of the passenger's body will come into contact with the triangular protection plate 8, thereby putting the passenger at risk. A safety switch 10 is provided at the tip of the triangular protection plate 8 to be activated by being pressed by the passenger's body when the passenger's body comes into contact with the triangular protection plate 8.
Measures have been taken to stop escalators.

On the other hand, recently, as shown in Figure 7, a device that generates a beam of energy, such as a photoelectric sensor, is installed between the outside of the escalator's handrail 3 and the floor of the building, and an alarm is issued when this beam of energy is interrupted. , or measures have been taken to stop the escalator.

(Problems to be Solved by the Invention) As described above, in the conventional safety devices for preventing the danger of being caught by a passenger who has part of his or her body protruding into a triangular space, When the device was activated, a warning signal was broadcast or the escalator was stopped.

In the above-mentioned configuration, the escalator is stopped every time the safety device is activated, which not only causes the escalator to stop frequently due to intentional mischief, but also causes damage to other passengers due to the escalator partially stopping. There are also safety issues.

Furthermore, there is a problem in that stopping the escalator every minute of the day impedes the smooth operation of passengers within the building.

The purpose of the present invention is to take the above-mentioned points into account and change the operation of escalators in accordance with the degree of danger to passengers.
To provide a highly reliable escalator safety device capable of ensuring the safety of passengers.

[Structure of the invention]

(Means for Solving the Problems) In the present invention, the moving handrail of an escalator that goes up and down between the upper and lower floors crosses the horizontal ceiling floor of the building or the exterior of another adjacent escalator. A plurality of photoelectric sensors are provided in a triangular boundary space formed between the sensors, one end of which is disposed on the escalator side, and the other end of which is disposed on the horizontal ceiling floor or the exterior of another adjacent escalator; A guidance broadcast corresponding to the operation of the photoelectric sensors is performed, and further the operation 1 of the plurality of photoelectric sensors is
Correspondingly, an escalator control device for controlling the speed of the escalator is provided.

(Function) In the present invention, guidance announcements and speed control are performed in response to the operation of a plurality of photoelectric sensors provided in a triangular boundary space, so for example, the position of the activated photoelectric sensor may be used to provide information to passengers. Considering the degree of danger, if a photoelectric sensor located far from the triangular intersection is activated, a warning announcement will be made to urge passengers to be careful.

If the photoelectric sensor closest to the triangular intersection is activated, the control circuit will stop the escalator operation to ensure the safety of passengers, and if the photoelectric sensor installed at the midpoint of the aforementioned sensors is activated, the control circuit will stop the escalator operation. .

By controlling the rotational speed of the electric motor using a frequency converter and slowing down the escalator, it is possible for passengers to avoid danger themselves by extending the time it takes to reach an intersection.

Therefore, in the present invention, it is possible to operate the escalator according to the degree of danger to passengers, but it is also possible to operate the escalator more smoothly.

(Example) An embodiment based on the present invention will be described with reference to the drawings.

Figures 1 and 2 show an example of the configuration of an escalator to which the safety device of the present invention is applied. Figure 1 shows the installed state of the escalator, and Figure 2 shows a sectional view taken along Each is shown below. FIG. 3 shows a part of the control circuit. FIG. 4 is a flowchart showing operation control. Note that in FIGS. 1 to 4, the same parts as those shown in FIGS. 5, 6, and 7 described above are designated by the same reference numerals, and the explanation thereof will be omitted.

First, in Fig. 1, the upper floor 6 of the building housing the escalator and the movable handrail 4 above the escalator railing 3 are shown.
In the triangular space 7 formed by the triangular space 7, a triangular protection plate 8 is attached to the upper floor 6 of the building, and photoelectric sensors A, B, C□, and C2 are provided before and after the triangular protection plate 8.

On the other hand, in FIG. 2, photoelectric sensors A, B, C1, .

Set it up.

Furthermore, FIG. 3 shows a part of the control circuit of the escalator, where 13 is the main circuit, 14 is a 2-up/down operation switching device, and 15 is a control circuit for the escalator.
1 is a frequency conversion device, 16 is an electric motor, and 18 is a control circuit.

The operation of the escalator safety device configured as described above will be explained.

For example, in FIGS. 1 and 2, -hJi1. Assume that the vehicle is being driven and a passenger is leaning over the moving handrail 4.

First, when the photoelectric sensor C2 or C1 located far from the intersection of the triangular section is activated (Steps a and b in Figure 4), a warning broadcast is sent to alert passengers to the danger (Step C). to understand and return the body to its original state.

Next, if the photoelectric sensor I3 immediately before the wedge guard 8 is activated (step d), there is a risk of getting caught in the triangular part, so by controlling the rotation speed of the electric motor 16 with the frequency converter 15, the escalator By reducing the speed of the vehicle (step e) and prolonging the time it takes to reach the triangular intersection, the passengers can return to their original state and avoid danger.

In addition, when the photoelectric sensor A at the rear of the wedge guard 8, that is, near the intersection of the triangular part is activated (step fyg)
Since there is a high risk of passengers getting caught in the triangle, the escalator is stopped (step t) to ensure the safety of passengers.

Further, if the photoelectric sensor B is activated and the photoelectric sensor A is not activated after several seconds have elapsed, the escalator speed is automatically returned to the rated speed (step IIJ), thereby ensuring smooth operation. As described above, by arranging multiple photoelectric sensors in the triangular space, it is possible to consider the degree of danger to passengers based on the operating position of the photoelectric sensors, and the escalator is stopped only when there is a real danger to passengers. Therefore, the escalator does not have to stop frequently, and since the frequency converter controls the rotation speed of the electric motor, it is possible to smoothly accelerate and decelerate the escalator, thereby increasing the safety of other passengers. can be secured sufficiently.

〔Effect of the invention〕

According to the present invention, by providing a plurality of photoelectric sensors, the degree of danger to passengers can be determined based on the position of the activated photoelectric sensor according to the distance from the triangular intersection. Able to operate escalators.

In other words, if a photoelectric sensor located far away from an intersection is activated, a warning broadcast is sent out to alert passengers so that they can avoid danger themselves, and if a photoelectric sensor near an intersection is activated, the most Since this is a dangerous situation, the escalator will be stopped to ensure the safety of the passengers, and if the photoelectric sensor in the middle section is activated, the speed of the escalator will be smoothly reduced using a frequency converter to ensure the safety of other passengers. This not only allows passengers to avoid danger themselves, but also ensures the safety of other passengers.Not only can the escalator be stopped only when there is real danger to the passengers, but it can also be used to stop the escalator infrequently. Since the number of escalators can be reduced, smooth and safe escalator operation can be achieved.

[Brief explanation of drawings]

Fig. 1 is an installation diagram of an escalator equipped with a safety device according to an embodiment of the present invention, Fig. 2 is a sectional view taken along the line ■-■ of Fig. 1, and Fig. 3 is a circuit showing a part of the escalator control circuit. Figure 4 is a flowchart showing operation control, Figure 5 is a diagram showing the installation state of a conventional escalator, Figure 6 (a),
(b) and FIG. 7 show a configuration diagram of a conventional escalator safety device. 1...Upper and lower entrances 1]...Outer ledge 2...
・Step 12...inner ledge 3...column
Drying 17...1 Hellas structure 4...Movable handrail A...Photoelectric sensor 5...Lower floor of the building B...Photoelectric sensor 6...Upper floor of the building
C1... Photoelectric sensor 7... Triangular space C2
... Photoelectric sensor 8 ... Triangular protection plate 9 ... Glass panel

Claims (1)

[Claims] A triangular shaped handrail formed between a moving handrail of an escalator that ascends and descends between upper and lower floors so as to cross the horizontal ceiling floor of a building or the exterior of another adjacent escalator. A plurality of photoelectric sensors are installed in the boundary space, one end of which is placed on the escalator side, and the other end of which is placed on the horizontal ceiling floor or the exterior of another adjacent escalator, and a sensor that corresponds to the operation of the plurality of photoelectric sensors. An escalator safety device comprising an escalator control device that performs guidance broadcasting and further controls the speed of the escalator in response to the operations of the plurality of photoelectric sensors.