JPS62171890A - Controller for passenger conveyor - 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 [Field of Industrial Application] The present invention relates to a control device for a passenger conveyor such as an escalator, and particularly to a control device for a passenger conveyor suitable for ensuring passenger safety.

[Conventional technology]

The conventional passenger conveyor control device was developed in U.S. Pat. No. 58-173.
As described in No. 668, it was designed to detect that the moving speed of the handrail was slower than the steps and stop the passenger comparator.

This moving handrail is driven by rotating the driving pulley by utilizing the frictional force between the moving handrail and the driving pulley, as described in Japanese Utility Model Application No. 58-17368. Therefore, depending on fluctuations in the frictional force between the moving handrail and the drive pulley or between the moving handrail and the guide device, for example, if the tension of the moving handrail is not properly applied by the driving pulley, or due to mischief by passengers, etc. When an external force is applied to prevent the movement of the handrail, the driving force of the handrail fluctuates, and the movement speed of the handrail changes intermittently, causing the movement of the handrail to cause what is known as a knocking phenomenon. Otherwise, passengers on the passenger conveyor are not synchronized with the moving speed of the steps, and their bodies are pushed back and forth in response to the moving speed of the moving handrail, and if the knocking phenomenon becomes severe, they may lose their balance and risk falling. Jitsukai 1973-173
As mentioned above, the passenger conveyor control device described in No. 668 is configured to stop the passenger conveyor when the operating speed of the moving handrail becomes slower than the operating speed of the steps,
This is extremely effective in preventing passengers from falling when there is a speed difference between the steps and the moving handrail. However, no consideration was given to ensuring the safety of passengers when the moving handrail is in a knocking state.

[Problem that the invention seeks to solve]

The above-mentioned conventional technology does not take into account the detection of the knocking phenomenon in which the operating speed of the moving handrail of the passenger conveyor changes intermittently. This knocking phenomenon caused the upper body to be pushed back and forth, posing a risk of losing balance and falling.

The purpose of the present invention is to detect a running abnormality of a moving handrail of a 1-passenger conveyor, display it, and when the running abnormality of the moving handrail continues for a predetermined period of time, notify the passengers of the 1-passenger conveyor, and then stop the passenger conveyor. To provide a control device for a passenger conveyor which can ensure the safety of passengers on the passenger conveyor.

[Means for solving problems]

The above object includes steps arranged in an endless manner, an endless moving handrail that moves in the same direction and at the same speed as the steps, and rollers provided on the travel path of the moving handrail to adjust the speed of the moving handrail. In the passenger conveyor equipped with a speed detection means connected to the roller, a speed change means and display means are provided to detect when the speed of the moving handrail detected by the speed detection means changes intermittently. This is achieved by

Further, the above object is to provide steps arranged in an endless manner, an endless moving handrail that moves in the same direction and at the same speed as the steps, and a speed control of the moving handrail provided on the running path of the moving handrail. In a passenger conveyor equipped with a roller and a speed detection means connected to the roller, when the speed of the moving handrail detected by the speed detection means changes intermittently,
a speed change detection means for detecting this; a measurement means for outputting an output when the operation of the speed change detection means continues for a predetermined time or reaches a predetermined number within a predetermined time; This is achieved by providing means for stopping the conveyor.

Further, the above object is to provide steps arranged in an endless manner, an endless moving handrail that moves in the same direction and at the same speed as the steps, and a speed control of the moving handrail provided on the running path of the moving handrail. In a passenger conveyor equipped with a roller and a speed detection means connected to the roller, when the speed of the moving handrail detected by the speed detection means changes intermittently,
A speed change detection means for detecting this, a display means, a measurement means for outputting an output when the operation of the speed change detection means continues for a predetermined time or reaches a predetermined number within a predetermined time, and an output from the measurement means. This is achieved by providing means for stopping the passenger conveyor.

[Operation] The speed change detection means is operated to issue an output signal when an intermittent change occurs in the output from the speed detection means for detecting the speed of the moving handrail, and this output signal causes the operation of the display means to be performed. By using this display means to notify passengers of the movement abnormality of the moving handrail and calling attention to it, it is possible to prevent falls due to unstable posture of passengers due to the phenomenon of knocking of the moving handrail. In addition to being able to predict the situation, it is now also possible to reliably know if the moving handrail is running abnormally.

In addition, when the output from the speed change means is continuously outputted, or when the output from the speed change detection means is sporadically transmitted within a certain period of time, the output from the speed change detection means is counted and set in advance. When the set value matches the set value, the passenger conveyor is stopped by the output from the measuring means that emits an output signal. This prevents passengers from falling into unstable positions due to knocking of the moving handrail. It can be prevented.

Furthermore, when the moving handrail knocks, this is detected by the speed change detection means, and the display means is activated based on the output from the speed change detection means to alert passengers, and then the passenger conveyor is stopped. Therefore, passengers
It is possible to know before the passenger conveyor stops that the passenger conveyor will stop, and to prepare for the time when the passenger conveyor stops, thereby preventing the passenger conveyor from falling over due to stop shock.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

FIG. 4 is a schematic diagram showing the overall configuration of the passenger conveyor.

In the figure, reference numeral 1 indicates a drive pulley 4 which is driven via a chain 5 by a step gear 3 that drives an endless step 2. An endless drive pulley 4 is driven by this frictional force in the same direction as the step 2 at the same speed. 6 is a guide roller that guides the moving handrail 1, 7 is a step rail that guides the movement of the steps 2, and 8 is a frame.

FIG. 2 is a conceptual diagram showing an example of how the speed detection device for a moving handrail according to the present invention is installed, and illustrates a case where a speed generator is used as the speed detection device. Figure 3 shows
In the ■-■ direction arrow view of FIG. 8), and a voltage proportional to the operating speed of the moving handrail 1 is obtained as the output of the speed generator 10.

The present invention utilizes the output of the speed generator 10 when the operating speed of the moving handrail 1 changes intermittently.

The control method is used to issue an alarm or stop the passenger conveyor, and a method of controlling the same will be explained below using the embodiment shown in FIG. In Fig. 1, 20 is a speed generator 1
A speed change detection device that receives an output voltage of 0 as an input and detects when the output voltage changes intermittently, A is a detection relay energized by the output from the speed change detection device 20, and Az is a detection relay. A contact that closes when A is energized, TA
is a timer that counts the time period during which the operating speed of the mobile handrail 1 changes intermittently and the operation of the speed change detection device 20 continues for a predetermined period of time, and T A t is a contact that closes when the counting time period of timers T and A expires. , B is a stop relay that stops the passenger conveyor when the operating speed of the handrail 1 changes intermittently and the operation of the speed change detection device 20 continues for a predetermined time; B1 is a contact that opens when the stop relay B is energized; C is a rising operation relay that is energized when the passenger conveyor is operated upward; C1 and Ca are contacts that close when the upward operation relay C is energized; C2 is a contact that opens; D is energized when the passenger conveyor is operated downward. Descending operation relay, D engineering* D
s is a contact that closes when the descending operation relay D is energized, B2 is a contact that opens, vP is the passenger conveyor's ascending operation relay C
DN is the descending operation starting switch that energizes the passenger conveyor's descending operation relay D, BZ is the alarm buzzer, 'P, N are the operation power supplies, and these are connected as shown in the diagram. has been done.

Next, the operation will be explained. When the passenger conveyor is to be operated in an upward direction, the operator first turns on the upward operation start switch UP (this switch is composed of a key switch). As a result, since the descending operation relay D is not energized now, its contact DZ is closed, so P
, -Bt -C7D2=UP=N circuit is closed and upward operation relay C is energized, which closes contact CI. Therefore, upward operation relay C is connected to P B1-C-02,
- Self-maintained by the Cx-N circuit. The passenger conveyor is now started, the steps 2 are driven, and the moving handrail 1 is also driven at the same time. When the handrail 1 is driven, the speed generator 10 outputs a voltage proportional to the operating speed. Since the speed change detection device 20 does not operate while the handrail 1 is operating at a predetermined speed, the upward operation continues as described above.

However, when the passenger conveyor starts ascending operation, if the moving handrail 1 performs a movement known as a knocking phenomenon due to the above-mentioned reasons, the output voltage from the speed generator 10 changes intermittently, causing a change in speed. The detection device 20 operates.

Therefore, the detection relay A is energized, its contact Ax is closed, and the alarm buzzer BZ sounds by the circuit P-C5-At-BZ-N. In addition, by closing this contact A1, P −” Cs −At T A N
The circuit is formed and the timer TA starts counting the time limit.

When a predetermined period of time has elapsed and the count time limit expires, the timer TA operates and closes the contact TA. This contact point T A
1, the stop relay B becomes P -TAt, -B
-N circuit is formed and is energized. Now, the contact Bl is opened and the passenger conveyor ascending operation relay C is connected to P-B.
The escalator stops because the knee CD2 C1-N circuit is opened and deenergized. For example, if the operating time limit of timer TA is set to three seconds, as mentioned above,
The moving handrail 1 performs a movement known as a knocking phenomenon,
When the detection relay A is energized, first, an alarm buzzer Bz sounds to alert the passengers on the passenger conveyor, and then, three seconds later, the passenger conveyor is stopped.

Therefore, according to this embodiment, when the moving handrail 1 performs a movement known as a knocking phenomenon, the passenger conveyor will stop after a predetermined period of time after sounding the alarm buzzer BZ to alert the passengers. Passengers riding on the conveyor can be prepared for such situations, thereby preventing accidents involving passengers.

The same is true for descending operation; at this time, descending operation relay D is energized by descending operation starting switch DN,
It self-holds and starts descending operation, continues the descending operation, and thereafter operates in the same manner as the ascending operation.

The above is an explanation of the operation when the movable handrail 1 runs for a predetermined period of time due to the knocking phenomenon due to the timer TA, but by replacing the timer TA with a counter device, the movable handrail 1 runs for a predetermined period of time due to the knocking phenomenon. It operates in almost the same way when a predetermined number of operations are performed within the same period.

〔Effect of the invention〕

According to the present invention, when the speed of the moving handrail changes intermittently and continues for a predetermined time, or when a predetermined number is reached within a predetermined time, an alarm is issued, and the passenger conveyor is stopped after the predetermined time elapses. Personal accidents can be prevented.

[Brief explanation of drawings]

FIG. 1 is a control circuit diagram of an embodiment of the present invention, FIG. 2 is a conceptual diagram showing an embodiment of the installation state of the moving handrail speed detection device of the present invention, and FIG. 3 is a control circuit diagram of an embodiment of the present invention. -m arrow view, FIG. 4 is a schematic diagram showing the overall configuration of the passenger conveyor. 1... Moving handrail, 2... Steps, 10... Speed generator, A... Detection relay, A1... Detection relay contact,
TA...Timer, TA1...Timer contact,
B...stop relay, Bz...stop relay contact, BZ
...Alarm buzzer, C...Rising operation relay, Cx,
C2, Ca... Ascending operation relay contact, D... Descending operation relay, Dz, D2. D8... Descending operation relay contact, ■P... Starting switch for ascending operation, DN... Starting switch for lowering operation.

Claims (1)

[Scope of Claims] 1. In a passenger conveyor equipped with steps arranged in an endless manner and an endless moving handrail that moves in the same direction and at the same speed as the steps, the speed of the moving handrail is determined by the speed of the moving handrail. A speed change detection means is provided which detects when the detected speed changes intermittently by a roller provided above and a speed detection means connected to the roller. A control device for a passenger conveyor, characterized by comprising means for displaying an abnormality in the operation of a moving handrail. 2. In a passenger conveyor equipped with steps arranged in an endless manner and an endless moving handrail that runs in the same direction and at the same speed as the steps, the speed of the moving handrail is controlled by a roller provided on the moving handrail. and a speed change detection means that detects when the detected speed changes intermittently, and when the operation of this speed change detection means continues for a predetermined time, Alternatively, a control device for a passenger conveyor is provided with a measuring means for outputting an output when a predetermined number is reached within a predetermined time, and means for stopping the passenger conveyor based on the output from the measuring means. 3. In claim 2, the means for stopping the passenger conveyor is configured to operate after alerting passengers of the passenger conveyor to the abnormal operation of the moving handrail. Conveyor control device.