JP2001302161A - Controller of passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the controller of a passenger conveyor capable of effectively preventing a step from freezing. SOLUTION: A passenger conveyor is controlled so that a step 3 is warmed by a heating element 7 while the conveyor is operated at a low speed. Because the step 3 is warmed sufficiently, the step 3 can be effectively prevented from freezing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control system for a passenger conveyor which facilitates operation in cold weather such as winter.

[0002]

2. Description of the Related Art Conventionally, a passenger conveyor such as an escalator or an auto line installed in a cold region or a ski resort is provided with a heating element such as a heater in order to prevent freezing of steps.

[0003] Further, as this type of apparatus, Japanese Utility Model Laid-Open No. 4-3 is disclosed.
As disclosed in Japanese Patent No. 4283, there is known an apparatus in which a heating device is operated at the time of operating a temperature and water sensor to prevent the freezing.

[0004]

However, according to the above-mentioned prior art, since the passenger conveyor is warmed in a normal operation state, the steps are passed before the passenger is sufficiently heated, and the effect of preventing freezing is low. There was an inconvenience.

The present invention has been made in view of the above-mentioned disadvantages, and an object of the present invention is to provide a control device for a passenger conveyor which performs control so as to be effective in preventing freezing of steps.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a passenger conveyor having an endlessly connected step for traveling between upper and lower entrances and a truss forming a return path for this step. Wherein the truss includes a temperature sensor that operates when the temperature in the truss becomes equal to or less than a predetermined value, and a heating element that generates heat in accordance with the operation of the temperature sensor. It is characterized in that the step is sometimes controlled to run at a low speed.

According to the present invention, since the steps are controlled so as to be heated by the heating element while the passenger conveyor is operated at a low speed as described above, the steps are sufficiently warmed, which is effective in preventing freezing.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a passenger conveyor according to the present invention will be described with reference to FIGS.

FIG. 1 is a schematic side sectional view showing an embodiment of a passenger conveyor of the present invention, FIG. 2 is a flowchart showing an operation of a passenger conveyor control device of the present invention, and FIG. 3 is a passenger conveyor control device of the present invention. Speed explaining speed control by
It is a time diagram.

First, the overall structure of an escalator, which is a passenger conveyor controlled by the present invention, will be described with reference to FIG.

In FIG. 1, 1a and 1b are entrances and exits of an escalator 2 and 3 is an endlessly connected upper and lower entrance 1a.
Step 4 traveling between 1b, 4 is a truss forming the return path of step 3, 5 is a machine room located at the lower part of the truss 4, 6 is a metal machine room cover, 7 is a heating element, and 8 is a heating element 7 9 is a temperature sensor that operates when the temperature in the truss 4 provided near the control panel 8 becomes lower than a predetermined value, 10 is a drain port, 11 is a display device, and 12 is an upper part of the truss 4. Shows the machine room located at. The heating element 7 is a heater, a blower or the like, and is provided in the truss 4 according to the present embodiment. However, if there is a space in the upper and lower machine chambers 5 and 12, as shown by a broken line in FIG. The heating element 7 can be installed.

Next, the operation of the passenger conveyor control device of the present invention will be described with reference to FIGS.

The escalator is operated by a dedicated key (not shown).
When started (S1), the temperature sensor provided in the lower machine room 5 is started.
When the terminal 9 is below a predetermined value (0 ° C. or below) (S2), the truss 4
The heating element 7 located inside operates (S3). During this operation,
Speed scalator v₁At low speed (S4)
After the operation has been performed for a predetermined time, for example, 10 minutes (S5),
If the temperature in lath 4 is equal to or higher than a predetermined value, normal operation is performed.
(S6) When the temperature inside the truss 4 is equal to or lower than the predetermined value, (S6)
2) Continue low-speed operation (S4). In FIG. 3, v ₁
Represents the speed during low-speed operation, and v₂Is the speed during normal operation
Is shown. t₁Indicates 10 minutes. v₁Is v₂About half of
Speed.

According to the present invention, since the temperature in the truss 4 is equal to or less than the predetermined value, the heating unit 7 heats the step 3 until the temperature in the truss 4 is equal to or more than the predetermined value. It is possible to prevent the passenger from falling over on the slippery step 3 and to ensure safety.

Further, since the heating by the heating element 7 is performed while the step 3 is being operated at a low speed, heat transfer to each step 3 can be ensured, and freezing of the step 3 can be prevented.

A display device 11 for indicating that the vehicle is running at a low speed is provided at the upper and lower entrances 1a and 1b, and a control device of the passenger conveyor is configured to issue a display command to the display device 11 at the time of the low speed operation. If so, the passenger and the manager of the passenger conveyor can know so, and can judge that there is no accident or breakdown.

[0017]

As described above, according to the present invention, since the control apparatus for the passenger conveyor is constituted, the steps can be prevented from being frozen, and the safety of the passenger can be ensured.

[Brief description of the drawings]

FIG. 1 is a schematic side sectional view showing one embodiment of a passenger conveyor of the present invention.

FIG. 2 is a flowchart showing the operation of the control device of the passenger conveyor of the present invention.

FIG. 3 is a speed-time diagram illustrating speed control by the passenger conveyor control device of the present invention.

[Explanation of symbols]

 3 Step 4 Truss 7 Heating Element 8 Control Panel 9 Temperature Sensor 11 Display

Claims (3)

[Claims] An apparatus for controlling a passenger conveyor, comprising: a step of traveling endlessly between upper and lower entrances and a truss forming a return path of the step; A temperature sensor that operates when the temperature becomes equal to or lower than a predetermined value, and a heating element that generates heat in accordance with the operation of the temperature sensor are provided, and the step is controlled so as to run at a low speed when the temperature sensor operates. And a passenger conveyor control device. 2. The passenger conveyor control device according to claim 1, wherein the low-speed operation is performed when the passenger conveyor is started. 3. A display device for displaying that the vehicle is running at a low speed, and a display command is issued to the display device during the low speed operation.
A passenger conveyor control device as described.