JPS60258081A - Controller for man 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 Application of the Invention] The present invention relates to a control device for a passenger conveyor, and particularly to a control device for a passenger conveyor that enables variable speed operation under the condition that there are no passengers.

[Background of the invention]

A detailed explanation will be given below with reference to the drawings. FIG. 2 is an explanatory diagram showing an escalator which is one form of a passenger conveyor. Second
In the figure, a step 1 and a handrail 2 are driven by a drive machine 3 including an electric motor. 4 is a control box, and this control box 4 controls the operation described above. This control box 4 is normally housed in an upper machine room 5.

FIG. 3 is a circuit diagram showing a general configuration of a control device for a speed conversion type passenger conveyor. This configuration example is one-way operation control. In Fig. 3 (1) (If), 7 and 8 are switches, 9 is a stop switch, 11 is an electromagnetic contactor coil, 12 is an electromagnetic contactor coil, 11 peaks 11.2, 1
2at, 12.2 is an electromagnetic contactor, M, , M2 is an electric motor,
S is a safety switch (2). The electromagnetic contactor coil 11 is energized by the reference speed operation start switch 7, and the contact 1], , , , .

11.2 will be closed and operation will continue.

Now, when a non-standard speed, such as high speed or extremely low speed operation for a physically handicapped person, is required, the stop switch 9 is used to stop the operation of the electric motor M1, and the operation is performed at a speed other than the preset standard. Turn on the speed operation start switch 8, energize the electromagnetic contactor coil 12, and close the contact 12.
It was customary to operate motor M2 by closing circuits □ and 12.2.

However, in this operation, the step 1 must first be temporarily stopped, and then, when restarting, the operator of the start/stop switch must go to the passenger conveyor, directly check whether there are any passengers, and restrict the entry of users. , the degree of burden has been reduced, and its improvement has been strongly desired. Also,
On the other hand, since a pole change type electric motor is generally used, it has only one preset speed other than the reference speed, that is, so-called two-speed (3) operation is only prepared. The reality is that usage patterns have changed, making it difficult to accommodate different speeds.

[Purpose of the invention]

The present invention has been made in view of the above points, and its purpose is to provide a control device for a passenger conveyor that enables variable speed operation and prohibits passengers from boarding at the time of variable speed operation. It is about providing.

[Summary of the invention]

In order to achieve the above object, the present invention counts the elapsed time until at least the passenger conveyor makes half a revolution at the same time as the speed conversion command, and then stops the motor once,
The motor is then restarted via the speed change control circuit, and passengers are prohibited from boarding the vehicle until the motor is restarted.

[Expression "p'. Example] 1i.

Embodiments of the present invention will be described below with reference to FIG.

(4) Figure 1 CI) is a circuit that drives the electric motor M, and Figure 1 CI) is a circuit that drives the electric motor M.
I) is a circuit diagram showing the control circuit.

In Figure (1), the motor M is connected to a power source for constant speed through a contact 11.2, and is also connected to a power source through a frequency converter 22 and a contact 21a as a power source for variable speed operation. ing.

In figure (II), 11 is an electromagnetic contactor coil, 11-
+, 1.1-2 is its A contact, 15 is the relay coil, 1
58 is its A contact, 16 is an hour meter, 16b is its B contact 17 is an indicator light, 18 is a warning buzzer, 20 is an hour meter, 21 is an electromagnetic contact coil, 21.1.21-2 is it A contact, 21. , is its B contact.

The operation of this embodiment will be explained below.

As described above, the reference speed operation is performed using the reference speed operation switch 7 as in the conventional case.

Now, when the non-standard speed operation switch 8 is turned on, the electromagnetic relay 15 causes the time meter 16 to start operating, and the passenger who got on the passenger conveyor at least half a turn, that is, at the same time as the switch 8 is turned on, is transported by the passenger conveyor (5). After the time has elapsed until it has completely descended, the contact 161 is opened. Then, the electromagnetic contact coil 11
becomes de-energized, contacts 11 are opened, and reference speed operation is stopped. On the other hand, the contact 15a of the relay coil 15 activates an indicator light 17 with a message such as "Please do not enter for a while" and a warning buzzer 18 as necessary to prevent users from boarding the vehicle. Enforce passenger regulations. Further, when the non-standard speed operation circuit contact 20a is closed after the passenger conveyor has completely stopped as determined by the time meter 20, the motor power is branched by the contact 2162 of the electromagnetic contactor 21 and supplied to the frequency converter 22, and the Electric power is supplied to the electric motor M at a certain frequency, and operation at a non-standard speed is started.

It goes without saying that the electric motor M used here does not require a pole-converting type that constitutes multiple electric motors in principle and can be a single-pole motor, and theoretically, frequency conversion is possible. (6) has the great advantage of allowing infinite speed selection by means of the device 22.

In short, according to the present invention, speed conversion required a specific switch operator to check the presence or absence of passengers before stopping and restarting the speed conversion, as in the past, but at the same time as the speed conversion command is issued, passengers are prevented from entering. Displaying information on the passenger conveyor to prescribe the boarding of subsequent passengers, and at the same time, keeping a constant speed for at least half a turn of the passenger conveyor;
The vehicle is stopped only after the passengers on the passenger conveyor have been transported, and after it has come to a complete stop, operation is resumed at a predetermined speed.

Here, reference numeral 211 is a contact point that cancels the boarding restriction display activated by the speed change command and the warning added as necessary by restarting the passenger conveyor.

Although the detailed gist of the present invention has been explained above using an example of one-way operation control for the sake of simplicity, reverse direction operation and returning to this speed after changing the speed can be easily carried out by the same means. Furthermore, according to the present invention, the speed conversion command switch 8 may be turned on by the switch operator, but it is also possible to turn on the speed conversion command switch 8 by using a time program (7) ram switch at a fixed time period.

〔Effect of the invention〕

As described above, according to the present invention, there is an effect that speed conversion commands can be issued safely and automatically.

[Brief explanation of the drawing]

1 (1) and (IT) are circuit diagrams showing one embodiment of the control circuit according to the present invention, FIG. 2 is an explanatory diagram of the entire escalator, and FIG. It is a control circuit explanatory diagram. ■...Steps, 2...Movable handrail, 3...Driver, 4
...Control box, 5. Machine room, 7. Standard speed operation start switch, 8. Non-standard speed operation command switch,
9...Stop switch, S...Safety switch group, 11
-+ + 11-2...Magnetic contactor 1 for reference speed operation
1 contact, 15. +... Contact of relay 15, 17...
- Indicator light, 18... Alarm buzzer, 16, 20... Hour hand, 21. +, 21.2 and 21k... Contact of electromagnetic contactor 21, 22... Frequency transfer 1° converter, M
,M,,M2...Electric motor. Agent Patent Attorney Akio Takahashi (8)

Claims (1)

[Claims] 1. In an apparatus comprising a man conveyor whose steps can be driven by a drive machine including an electric motor, and a control device which can control the operation of this conveyor, the electric motor is a first motor for constant speed operation. The control device can be operated by either a power source or a second power source for variable speed operation, and the control device is provided with a clock means that can measure the time it takes for the passenger conveyor to make at least half a revolution after a speed conversion command is input from the outside. A control device for a passenger conveyor, characterized in that the circuit is configured such that, based on a signal from the clock means, the electric motor is stopped from being operated by the first power source after the elapse of the time period, and is thereafter switched to operation by the second power source. 2. The passenger conveyor according to claim 1, wherein the control circuit is configured to activate a passenger boarding prohibition guide at the same time as the speed conversion command, and cancel the guide after the speed change is restarted. control device. (1)