JPH0218276A - Maintenance device for elevator - 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 an elevator maintenance and operation device, and particularly to an elevator maintenance and operation device that realizes safe maintenance and inspection work.

[Conventional technology]

Inside the elevator hoistway, various safety devices and various devices necessary for safe operation of the elevator are installed. For the safe operation of elevators, it is essential that the various safety devices and equipment provided in these hoistways operate normally at all times.

For this reason, maintenance and inspection work is regularly performed on elevators, and at that time, maintenance personnel confirm that the safety devices and equipment in the hoistway are operating normally.

This type of maintenance and inspection work is normally carried out by two maintenance personnel, one of whom is positioned above the elevator car and operates the maintenance operation switch on the operation panel installed above the car. As a result, the maintenance operation relay is activated to perform maintenance operation of the one-passenger car. At this time, the other maintenance operation switch is also located on the car, and various safety switches installed in the hoistway are set in accordance with the maintenance operation state and maintenance stop state of the car operated under maintenance operation. Perform maintenance and inspection work on equipment and various equipment.

In the conventional maintenance and inspection work for elevators as described above, maintenance personnel perform maintenance and operation of the cars and perform maintenance and inspection work on various safety devices and various equipment installed in the hoistway. It required a maintenance worker and two maintenance workers, and there was a problem in terms of maintenance costs.

An elevator maintenance and operation device for solving the problems of the conventional system described above is proposed in Japanese Utility Model Application Publication No. 50-136160.

In the system proposed in Japanese Utility Model Publication No. 50-136160, in addition to buttons for raising and lowering the car on the operation panel provided on the first car, there is also a stop switch for preventing the car from starting. is provided. Jitsukai Showa 50-
In the method proposed in Publication No. 136160, a - number of maintenance staff positions the car and operates the lift button on the operation panel to place the car in a maintenance operating state and move it within the hoistway. While doing so, we perform maintenance and inspection work on various safety devices and equipment installed in the hoistway, and also release the operation of the elevator button on the operation panel to place the car in a maintenance stop state, and then stop the car. After operating the switch to prevent the car from starting, the same maintenance worker can safely perform maintenance and inspection work on various safety devices and various devices installed in the hoistway.

[Problem to be solved by the invention]

In the method proposed in the aforementioned Japanese Utility Model Publication No. 50-136160, when the car is in a maintenance stop state, maintenance personnel operate a stop switch to prevent the car from starting, thereby safely moving the car into the hoistway. Maintenance and inspection work can be carried out on various safety devices and various equipment installed in the facility.

However, maintenance personnel tend to perform maintenance and inspection work without operating the stop switch due to their familiarity with the work. Further, maintenance and inspection work on various safety devices and equipment installed in the hoistway may be performed without operating the stop switch due to maintenance personnel forgetting to operate it or misunderstanding the operation.

In this way, when maintenance is stopped and the stop switch is not operated and maintenance and inspection work is being carried out on various safety devices and equipment in the hoistway, a part of the maintenance worker's body is attached to the operation panel. If the lift button is touched, the car may start, creating a dangerous situation for maintenance personnel.

The present invention has been made in view of the current state of maintenance and operation equipment for elevators of this kind as described above.

The purpose of this invention is to propose an elevator maintenance and operation device that reliably prevents the car from starting when the car is in a maintenance-stopped state, and that ensures the safety of maintenance personnel during maintenance and inspection work.

[Means to solve the problem]

In order to achieve the above-mentioned object, the elevator maintenance operation device of the present invention operates a maintenance operation relay by operating a maintenance operation switch, performs maintenance operation of the car, and changes the maintenance operation state and maintenance stop state of the car. and a safety switch which is provided in the elevator on which elevator maintenance and inspection work is performed and which is operated in the maintenance stop state to prevent the car from starting; It has an alarm that stops operating when operated, and a call setting means that detects the alarm's operation exceeding a predetermined time and activates a communication device that connects the car and a maintenance company's monitoring station, The monitoring station is provided with display means for displaying that the telephone call device has been activated by the telephone call setting means.

[Effect]

In the present invention, if the safety switch is not operated in the maintenance stop state, the alarm is activated immediately to alert the maintenance personnel. Furthermore, if the alarm continues to operate for a predetermined period of time, the communication device between the car and the maintenance company's monitoring station is placed into a communication state, allowing the manager to confirm the situation.

Since it operates in this way, the present invention eliminates the need to forget to operate a safety switch when maintenance is stopped, and makes it possible to perform maintenance and inspection work on various safety devices and equipment installed in the hoistway when maintenance is stopped. It can be done safely.

In addition, even if a maintenance worker is unable to operate the safety switch due to an abnormal condition, the manager will know that there is an abnormality in the maintenance worker working at the site and will take appropriate measures. Maintenance personnel performing maintenance inspection work are not exposed to any danger.

〔Example〕

Embodiments of the present invention will be described in detail below using FIG.

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

As shown in the figure, a safety switch SWI and a safety relay 1 are connected in series between DC power supply terminals P and N, and a rising/lowering terminal, which will be described later, is connected between the connection point of the safety switch SWI and safety relay 1 and the DC power supply terminal N. A contact point 7B of the detection relay 7, a contact point 4A of a maintenance operation relay 4, which will be described later, and an alarm device 2 are connected in series. Also, a timer 3 is connected in parallel to this alarm 2.
is connected.

In addition, a maintenance operation switch SW is installed between DC power supply terminals P and N.
2 and maintenance operation relay 4 are connected in series, and similarly, between DC power terminals P and N, contact IB of safety relay 1, contact 4A2 of maintenance operation relay 4, upward operation button UPB, and upward operation relay 5 are connected in series. are connected in series. Furthermore, a downward operation button DNB and a downward operation relay 6 are connected in series between the connection point of the contact 4A and the upward operation button UPB and the DC power supply terminal N.

Similarly, the contact 5A of the ascending operation relay 5 and the ascending/descending detection relay 7 are connected in series between the DC power terminals P and N,
A contact 6A of a descending operation relay 6 is connected in parallel to the contact 5A.

On the other hand, one communication device 8 is provided with a communication setting means composed of a switch SW3 provided in the car and a contact 3A1 of the timer 3 connected in parallel with this switch SW3.

Further, the monitoring device 12 of the maintenance company is provided with a display bag @9 that displays that the communication device 8 has been activated by the timer 3, and the monitoring device 12 is connected to the monitored device 10 through the telephone line 11. A contact 3A2 of the timer 3 is connected to the monitored device 10.

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

During maintenance and inspection work on the elevator, a maintenance worker is placed on the car and operates the maintenance operation switch SW2 to switch to the terminal t3 side. By operating this maintenance operation switch SW2, the maintenance operation relay 4 is energized, and the energization of the maintenance operation relay 4 turns on contacts 4A and 4A.

When performing maintenance and inspection work on the elevator while the car is in the maintenance operation state, the upward operation button UPB or the downward operation button DNB is pressed.

For example, when the upward operation button UPB is pressed,
A closed circuit is formed by the DC power supply terminal P, the contact IB, the contact 4A2, the upward operation button UPB, the upward operation relay 5, and the DC power supply terminal N, and the upward operation relay 5 is energized. By energizing the ascending operation relay 5, the contact 5A is turned on, so that the power supply voltage is applied to the ascending/descending detection relay 7, and the ascending/descending detection relay 7 is energized.

In this way, the contact 7B is turned OFF by energizing the rise/fall detection relay 7, and therefore, in this state, no power supply voltage is applied to the alarm 2, so the alarm 2 does not operate.

Therefore, in the maintenance operation state described above, the alarm 2 does not operate and the car moves upward at a low speed, so the maintenance personnel on the first car are placed in the hoistway as the car moves upward. Can perform maintenance and inspection work on various safety devices and equipment. In this case, we have explained the state in which the upward operation button UPB is pressed, but even if the downward operation button DNB is pressed and the car is operated downward, maintenance and inspection of the elevator in the maintenance operation state can be performed in the same way. I can do it.

Next, when performing maintenance and inspection work on the elevator while the car is in a maintenance-stopped state, the operation of the up-operation copper UPB or the down-operation button DNB is set to the released state at a predetermined position in the hoistway. Stop the car. When the car stops in this way, contact 5 or 6A turns OFF.
As a result, the energization of the rise/fall detection relay 7 is released, and thus the contact 7B is turned ON.

When performing maintenance and inspection work on the elevator in the above-mentioned maintenance stop state, once the car has stopped at a predetermined position in the hoistway, the maintenance worker operates the safety switch SW1 to switch to the terminal t2 side. By operating this safety switch SW1, the application of the voltage rA to the alarm device 2 is cut off, so the alarm device 2 will not operate.

Furthermore, since the safety relay 1 is deenergized by the operation of the safety switch SWI described above, the contact IB is turned OFF.

Therefore, if the safety switch SW1 is operated as described above, the alarm 2 will not be activated, and the maintenance worker can stop the car at a predetermined position on the hoistway in the maintenance stop state.
It is possible to perform maintenance and inspection work on various safety devices and various equipment installed in the hoistway. During the maintenance and inspection work of the elevator in this maintenance stop state, a part of the maintenance worker's body was exposed to the copper UPB for upward operation or the button DNB for downward operation.
Even if you touch and push these, the relay for upward operation 5
Since power supply voltage is not applied to the descending operation relay 6 and the single car does not start running, maintenance personnel can safely carry out maintenance and inspection work.

When performing maintenance and inspection work in the above-mentioned maintenance suspension state.

If maintenance personnel do not operate safety switch SWI, DC power terminal P, safety switch SWI, contact 7B, contact 4
Since a closed circuit is formed between A, the alarm 2, and the DC power terminal N, the alarm 2 continues to operate.

Therefore, when the maintenance worker notices that the safety switch SW1 has not been operated and operates the safety switch SW1, the alarm 2 stops operating and the contact IB turns OFF, causing the above-mentioned safety situation to occur. Able to perform maintenance and inspection work.

Suppose an abnormal situation occurs on the maintenance staff's side and the safety switch S
When the WI cannot be operated, the timer 3 detects that the alarm 2 has been activated for a preset period of time and turns on the contacts 3A and 3A2 after a predetermined period of time. do.

In this way, by the operation of the timer 3, the contact 3A1 and the contact 3A are both ONL, and the communication device 8 establishes a communication state between the monitoring stations of the maintenance company, so that a notification is given to the monitoring station, and the contact 3A The monitored device 10 transmits information that the communication device 8 has been activated to the monitoring device 12 via the telephone line 1, and the monitoring device 12 operates the display device 9 based on this information. As a result, at the monitoring station, the occurrence of an abnormal situation for the maintenance personnel on the car can be confirmed on the display device 9, and the content of the abnormal situation is displayed on the communication device 8, so that the maintenance personnel can take appropriate action. safety can be ensured.

〔Effect of the invention〕

According to the present invention, the safety device and the 411
During maintenance and inspection work on the G8, the operation of the safety switch is confirmed by the activation of the alarm, so maintenance personnel will not forget to operate the safety switch, and even if the operation button is operated incorrectly, the car will not start, making this a very popular feature. Elevator maintenance and inspection work can be performed safely by maintenance personnel, and maintenance and inspection work costs are reduced.

In addition, in the event of an abnormal situation involving a maintenance worker during maintenance inspection work, the car and the maintenance company's monitoring station will be connected via a telephone line, and a display will notify the maintenance worker of the abnormal situation. Occurrences are indicated so that appropriate action can be quickly taken by the monitoring station to keep maintenance personnel safe.

[Brief explanation of the drawing]

The figure is a circuit diagram showing the configuration of an embodiment of the present invention. 1... Safety relay 2... Alarm device, 3... Timer, 4... Maintenance operation relay, 5... Relay for ascending operation 6... Relay for descending operation, 7... Ascent Lowering detection relay 8...Telephone device, 9...Display device, 10...Monitored device, 11...Telephone line 512...Monitoring device,
SWI...safety switch, SW2...maintenance operation switch, UPB...up, up operation button, DNB...down operation button, SW3 switch, ], B, 3A□, 3A,, 4A
1,4A2゜5A,6A,7B...Contact. Procedural amendment (method) % formula % Indication of the case Patent application No. 165059/1983 Name of the invention Elevator maintenance device September 27, 1988 6 Number of claims increased by amendment None 8 M
i Correct contents (1) Bright, Figure 1 on page 14, line 15 of ill# is corrected. (2) The times shall be amended as shown in the attached amended drawings. 9 Attached document catalog correction drawing 1 copy “Figure 1 is”

Claims (1)

[Claims] (1) A maintenance operation relay is activated by operation of a maintenance operation switch to perform maintenance operation of the car, and maintenance and inspection work is performed on the elevator when the car is in the maintenance operation state and the maintenance stop state. a safety switch that is operated in the maintenance stop state and prevents the car from starting; an alarm that starts operating in the maintenance stop state and stops operating when the safety switch is operated; A call setting means is provided for detecting an operation exceeding a predetermined time and activating a communication device connecting the car and a monitoring station of a maintenance company, and the communication device is activated by the call setting means. A maintenance device for an elevator, characterized in that a display means for displaying the following information is provided in the monitoring station.