JPH0577590B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to an elevator maintenance and operation device, and particularly to an elevator maintenance and operation device that realizes safety for maintenance personnel during inspection work.

<Prior Art> Various safety devices and various other devices and equipment are installed in the elevator hoistway to ensure safe operation of the elevator. If these various safety devices and devices do not operate normally, safe operation of the elevator will not be achieved.

Therefore, maintenance personnel regularly perform inspections on the various safety devices and other devices and equipment provided in the elevator hoistway to confirm their normal operation.

This inspection work is normally carried out by two maintenance personnel, one of whom takes a position above the car and operates the elevator using a control panel provided above the car. During this time, the other maintenance worker will check the safety devices installed in the hoistway and other various devices and equipment on the car while the car is moving or when the car is stopped, to confirm that they are working properly. I do.

However, the above-mentioned conventional inspection method requires two maintenance personnel, an operating personnel and an inspection personnel, which poses a problem in terms of maintenance costs. Therefore,
Elevator maintenance and operation equipment that solves the problems with the conventional inspection methods mentioned above was developed
It is proposed in the publication No. 50-136160.

In the elevator maintenance operation device proposed in Japanese Utility Model Publication No. 50-136160, the operation panel provided on the car has buttons for raising and lowering the elevator as well as buttons for preventing the elevator from starting. The structure is equipped with a stop switch. Operating this stop switch prevents the elevator from starting, so maintenance personnel can safely operate safety devices and other devices and equipment in the hoistway while the elevator is stopped, without being distracted by the operation panel. Inspection is possible.

Therefore, according to the elevator maintenance and operation device proposed in Japanese Utility Model Publication No. 50-136160, one maintenance worker operates the lift buttons on the operation panel provided above the car to raise and lower the elevator. The elevator can be safely stopped by moving the elevator or operating the stop switch. Therefore, this one maintenance worker moves the elevator, inspects the safety devices installed in the hoistway and various other devices and equipment, and operates the stop switch to stop the elevator. It also becomes possible to safely stop the elevator and inspect the safety devices and other various devices and equipment in the hoistway.

<Problems to be solved by the invention> In the elevator maintenance operation device proposed in Utility Model Application Publication No. 50-136160 as mentioned above, during inspection work performed with the elevator in a stopped state, it is necessary to operate a stop switch. This prevents the elevator from starting and allows various inspection work to be carried out safely.

However, maintenance personnel tend to perform inspection work without operating the stop switch due to their familiarity with the work. Alternatively, due to a maintenance worker forgetting to operate the elevator or misunderstanding the operation, inspection and operation confirmation work may be performed when the elevator is stopped without operating the stop switch.

If you perform inspections and operation checks when the elevator is stopped without operating the stop switch in this way, if a maintenance worker accidentally touches the operation button during the inspection, the elevator will start and maintenance will be required. This creates a very dangerous situation for personnel.

The present invention was made in view of the current state of the elevator maintenance operation device proposed in the above-mentioned Japanese Utility Model Publication No. 50-136160. To provide a maintenance operation device for an elevator, which is equipped with an alarm that issues an alarm when a switch is not operated, and when a stop switch is operated, the alarm is inactivated and maintenance operation is prohibited.

<Means for Solving the Problems> In the present invention, a maintenance operation relay is provided for activating the elevator maintenance operation device, and by turning on the drive switch of this maintenance operation relay, the maintenance operation operation section is activated. In an elevator to be operated for maintenance operation, there is provided an alarm that is activated by detecting the stoppage of the elevator during the maintenance operation, a stop switch that stops the operation of the alarm, and a stop switch that stops the operation of the alarm, and the maintenance operation is performed by operating the stop switch. The vehicle is configured to include a prohibition means for prohibiting operation of the driving operation section.

<Operation> In the present invention, when the elevator comes to a halt during elevator maintenance and inspection work, this halt is detected and the alarm is activated. When a maintenance worker operates a stop switch due to activation of this alarm, the operation of the alarm is stopped and operation of the maintenance operation control section is prohibited. Therefore, in the present invention, the alarm is activated every time the elevator stops, and the alarm continues to operate unless the stop switch is operated. For this reason, when maintenance personnel perform inspection work with the elevator in a stopped state, they operate the stop switch to stop the operation of the alarm, thereby preventing forgetting to operate the stop switch.

Once the stop switch is operated, the prohibition means prohibits operation of the maintenance operation operation section of the elevator, allowing maintenance personnel to safely perform inspection work while the elevator is stopped.

<Example> Hereinafter, an example of the present invention will be described in detail using the drawings.

Here, the figure is a circuit diagram showing the configuration of an embodiment of the present invention.

A stop switch 1 and an elevator stop relay 2 are connected in series between DC power terminals P and N. Connected in parallel to this stop relay 2 are a contact 10-1 of a rising/lowering operation detection relay 10, which will be described later, a contact 5-1 of a maintenance operation relay 5, which will be described later, and a series connection circuit of an alarm 3.

Further, a drive switch and a maintenance operation relay 5 are connected in series between the DC power supply terminals P and N.

Similarly, contact 2-1 of the stop relay and contact 5- of the maintenance operation relay 5 are connected between DC power terminals P and N.
2. The upward operation button 6 and the upward operation relay 7 are connected in series, and the downward operation button 8 and the downward operation relay are connected between the connection point between the contact 5-2 and the upward operation button 6 and the DC power terminal N. Relay 9 is connected in series.

Further, between the DC power terminals P and N, a contact 7-1 of the rising operation relay 7 and a rising/lowering operation detection relay 10 are connected in series, and a contact of the falling operation relay 9 is connected in parallel to the contact 7-1. 9-1 is connected.

In the embodiment of the present invention having the above-mentioned configuration, as shown by dotted lines in the figure, the up operation button 6, the up operation relay 7, the down operation button 8, and the down operation relay 9 are connected to the maintenance operation operation section 11. It consists of Further, the stop relay 2 and the contact 2-1 constitute a prohibiting means.

The operation of the embodiment of the present invention having such a configuration will be described next.

When inspecting an elevator, a maintenance worker is placed on top of the car and first turns on the drive switch 4. When the drive switch 4 is turned on, a DC voltage is applied to the maintenance operation relay 5, so that the maintenance operation relay 5 is energized.

By energizing the maintenance operation relay 5 in this manner, the contact 5-2 closes, so that a DC voltage is applied to the maintenance operation operation section 11, and the maintenance operation operation section 11 becomes operable.

When the maintenance person on the car presses the up-operation button 6, a DC voltage is applied to the up-operation relay 7, so that the up-operation relay 7 is energized. When the ascending operation relay 7 is energized in this way, the elevator starts ascending operation, so maintenance personnel must check the various safety devices and other various devices and equipment installed in the hoistway. , it is possible to inspect and confirm the normal operation of the elevator when it is moving.

When moving the elevator during inspection work, contact 7-
1 closes, the relay 10 for detecting up/down operation
A DC voltage is applied to energize the up/down operation detection relay 10 . Therefore, since the contact 10-1 is open, no DC voltage is applied to the alarm 3 in this state, and the alarm 3 does not operate.

The elevator stops when it reaches a preset stop position for inspection work, and this stop releases the energization of the ascending/descending operation detection relay 10. When the ascending/descending operation detection relay 10 is deenergized, the contact 10-1 closes, so the alarm 3
DC voltage is applied to the alarm 3, and the alarm 3 is activated.

Then, the maintenance worker on the car turned on the stop switch 1.
When the alarm 3 is operated to open, the application of DC voltage to the alarm 3 is cut off, so the alarm 3 stops operating. When stop switch 1 is opened at the same time, stop relay 2 is deenergized, so contact 2
-1 is opened, and the application of DC voltage to the maintenance operation operation section 11 is cut off.

Therefore, when the elevator is stopped during this inspection work, operation of the maintenance operation operation section 11 is prohibited, so even if a maintenance worker accidentally operates the up operation button 6 or the down operation button 8, The elevator will never start going up or down.

Therefore, maintenance personnel can safely inspect and confirm the normal operation of various safety devices provided in the hoistway and various other devices and equipment while the elevator is stopped.

Descending operation is performed in the same way, and when the maintenance person on the car operates the descending operation button 8, a DC voltage is applied to the descending operation relay 9, so the descending operation relay 9 is energized, and the elevator performs descending operation. During this downward operation, as in the case of upward operation, the elevator stops at a stop position for a predetermined inspection operation, and the alarm 3 is activated.

When a maintenance person operates the stop switch 1, the operation of the alarm 3 is stopped and the operation of the maintenance operation operation section 11 is prohibited.

In this way, even during descending operation, maintenance personnel can inspect and confirm the normal operation of various safety devices installed in the hoistway and various other devices and equipment when the elevator is moving and stopping. can be done safely.

As explained above, if the stop switch 1 is not operated during inspection work when the elevator is stopped, the alarm 3 will continue to operate, which will prevent maintenance personnel from forgetting to operate the stop switch 1. Since operation of the maintenance operation operation section 11 of the elevator is prohibited by the operation 1, the safety of maintenance personnel is ensured.

In addition, if alarm 3 does not stop operating,
It is also possible to take measures in anticipation of an abnormality caused by a maintenance worker during inspection work, making inspection work safer.

<Effects of the Invention> According to the present invention, whenever the elevator stops at a predetermined inspection work position during inspection work, the alarm is activated and the alarm does not stop unless the stop switch is operated, so maintenance personnel have to stop the elevator. No more forgetting to operate the switch. By operating this stop switch, operation of the maintenance operation control section of the elevator is prohibited, so that one maintenance person can safely perform inspection work when the elevator is moving and when it is stopped.

[Brief explanation of drawings]

The figure is a circuit diagram showing the configuration of an embodiment of the present invention. 1...Stop switch, 2...Stop relay, 3...
...Alarm, 4...Drive switch, 5...Maintenance operation relay, 6...Button for upward operation, 7...Relay for upward operation, 8...Button for downward operation, 9...Relay for downward operation, 10 ... Relay for detecting ascending/descending operation, 1
1...Maintenance operation operation section.

Claims (1)

[Claims] 1. In an elevator that is provided with a maintenance operation relay that activates the maintenance operation operation section of the elevator, and in which the maintenance operation is performed by operating the maintenance operation operation section by turning on the drive switch of this maintenance operation relay, the above-mentioned An alarm device that operates upon detecting stoppage of the elevator during maintenance operation, a stop switch that stops the operation of the alarm, and a prohibition means that prohibits operation of the maintenance operation operation section by operating the stop switch. An elevator maintenance operation device comprising: