JPH0551191A - Escalator - Google Patents

Abstract

PURPOSE:To increase/decrease transport quantity by providing a drive unit for making the operating speed of an escalator fast in the case of many passenges being on the escalator while reducing the operating speed of the escalator to low speed in the case of few passengers. CONSTITUTION:When the output of a sensor 7 for detecting the quantity of passengers becomes high in passenger density, a speed pattern setting circuit 15 generates a signal for making the speed fast, and an inverter control circuit 16 generates a signal for increasing the speed so as to increase the rotation of a motor 1 by an inverter circuit 13. Then, upon detecting no passenger, a broadcasting device 17 is operated by the signal of the speed pattern setting circuit 15 to announce the stop of an elevator in a short time by a speaker 8. In addition, a timer 14 is energized to open normally closed contacts 14a-14c, so that the motor 1 is stopped to bring the escalator to a stop. The transport force of the escalator can be thus increased/decreased according to the density of passengers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an escalator having a control function for automatically converting the operating speed of the escalator according to the congestion level of passengers.

[0002]

2. Description of the Related Art In a conventional escalator, as shown in FIG. 3, power generated by an electric motor 1 is decelerated by a speed reducer 2 and is transmitted to a step 6 via a drive chain 3, a pulley 4 and a step chain 5. Passing on and off passengers on the steps. In this case, the lifting speed of the step 6 is always constant.

[0003]

In recent years, the places where escalators are installed have been expanded, and many escalators have been installed inside subway stations. In particular, due to the concentration of transportation facilities in urban areas, multiple subways cross at the same point at terminal stations and so on, and so-called deep subways have appeared. If you install an escalator in such a place, the floor height will be considerably high, and you will have to spend a long time on the escalator. In addition, passengers are concentrated during the morning and evening rush hours, and the situation may temporarily exceed the transport capacity of the escalator.

Normally, the escalator is 30m / in Japan.
Driven in minutes. Although there are some cases where the vehicle is driven at 45 m / min, it is not optimal because it causes fear for the elderly and people with disabilities. In other words, if the speed of the escalator is increased, the transportation capacity is increased, but considering the elderly and the disabled, the speed cannot be increased unnecessarily. By the way, when observing the increase and decrease of passengers at terminal stations and the like, it is often crowded during the so-called rush hours in the morning and evening, and the daytime hours are often relatively light. In addition, elderly people, people with disabilities, children, etc. often avoid the rush hours and use relatively busy daytime hours. The present invention has been made in view of such a situation, and increases the speed of the escalator during the morning and evening rush hours to increase the transport capacity, and slows down the speed in a relatively free time period so that elderly people and The purpose is to provide an escalator that can be safely used by people with disabilities and children.

[0005]

Means for Solving the Problems The escalator of the present invention is a sensor installed in or near the escalator for detecting the amount of passengers of the escalator, and based on the output of this sensor, when there are many passengers of the escalator, It is characterized by comprising a driving device for increasing the operating speed of the escalator and for reducing the operating speed of the escalator to a low speed when there are few passengers.

[0006]

In the escalator thus constructed, when the sensor detects that there are many passengers, the rotation speed of the drive device is increased to increase the operating speed of the escalator, and when the sensor detects that there are few passengers,
Decrease the number of rotations of the drive device to slow down the operating speed of the escalator.

[0007]

Embodiments of the present invention will now be described with reference to the drawings. The same parts as those in FIG. 3 are designated by the same reference numerals and the description thereof will be omitted. 1 and 2 show an embodiment of the escalator of the present invention. In FIG. 1, 7
Reference numerals a and 7b respectively denote sensors for detecting the amount of passengers. These sensors 7a, 7b are arranged, for example, in the vicinity of the entrance and exit of the escalator so that the light-emitting side and the light-receiving side of the photocell face each other across the passenger passage.
The number of times a passenger passes between them within a certain fixed time shall be counted. 8 is a speaker that conveys a message to passengers on the escalator.

In FIG. 2, 11 is a three-phase AC power source R,
A converter connected to S and T for performing AC / DC conversion, 12 a capacitor connected to the DC side of this converter 11, 13 an inverter circuit for converting DC to AC, and the output of this inverter circuit 13 is a timer. 14 normally closed contacts 14a,
It is input to the drive device (electric motor) 1 via 14b and 14c. Reference numeral 15 is a sensor 7 (7a, 7a) for detecting the amount of passengers.
The signal from b) is input and a speed pattern setting circuit that sets a speed pattern is provided. Reference numeral 16 is an inverter control circuit that receives the signal from the speed pattern setting circuit 15 and controls the inverter circuit 13. The signal from the speed pattern setting circuit 15 is output to the speaker 8 via the timer 14 and the broadcasting device 17. 18 is an ascending operation contactor, 18a, 18
Reference numeral b is a normally open contact of the ascending operation contactor 18, 18a is used for self-holding, and 18b is connected to the inverter control circuit 16 and is used to determine the firing order of the inverter circuit 13 in the ascending direction. 19 is a descending contactor, 19a, 19
Reference numeral b is a normally-open contact of the descending operation contactor 19, 19a is used for self-holding, and 19b is connected to the inverter control circuit 16 and is used for determining the firing order of the inverter circuit 13 in the descending direction. 20 is a stop switch, 21 is an ascending direction switch, and 22 is a descending direction switch.

In the apparatus of the present invention constructed as described above, when the ascending direction switch 21 is turned on, the ascending operation contactor 18 is energized. With this bias, the normally open contact 18a,
18b is closed. Due to this closing, the inverter control circuit 16 issues a signal in which the firing order of the inverter circuit 13 is in the ascending direction, and the electric motor 1 is controlled by the inverter circuit 13 to rotate. Reference numeral 22 denotes a descending direction switch. When this switch is turned on, the descending direction operation is started in the same manner as above, but the description thereof is omitted.

In FIG. 4, when the output of the sensor 7 for detecting the amount of passengers is between A and B in the figure where the passenger density is high,
The speed pattern setting circuit 15 generates a signal for increasing the speed, the inverter control circuit 16 generates a signal for increasing the speed, and the inverter circuit 13 increases the rotation of the electric motor 1. If the passenger density is in the state of C of FIG. 4, that is, there is no passenger, the broadcast device 17 is activated by the signal of the speed pattern setting circuit 15, and the speaker 8 informs that the escalator will soon stop. Further, when the timer 14 is energized, the normally closed contacts 14a-1
4c is opened, the electric motor 1 is stopped, and the escalator is stopped.

As described above, according to the present invention, it becomes possible to increase or decrease the transportation capacity of the escalator according to the passenger density. Although the escalator has been described in the above embodiment, the same effect can be expected when applied to a moving step. Therefore, in this specification, the escalator includes moving steps.

[0012]

According to the present invention, it is possible to automatically detect the increase / decrease of passengers, accelerate / decelerate the speed of the escalator, and increase / decrease the transportation amount.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of an escalator of the present invention.

FIG. 2 is a block diagram of an example of a control circuit in the escalator of the present invention.

FIG. 3 is a schematic view showing an example of a conventional escalator.

FIG. 4 is a setting diagram illustrating a passenger density-speed pattern setting state in the escalator of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Drive device (electric motor) 2 Speed reducer 6 Steps 7 Sensor 8 Speaker 11 Converter 14 Timer 18 Ascending operation contactor 19 Decommissioning contactor 20 Stop switch 21 Ascending direction starting switch 22 Downward starting switch

Claims (1)

[Claims] 1. A sensor installed in or near the escalator to detect the amount of passengers on the escalator, and based on the output of this sensor, if there are many passengers on the escalator, the operating speed of the escalator is increased so that the passengers An escalator, which is provided with a drive device that reduces the operating speed of the escalator to a low speed when the number is low.