JPH0575668B2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to an elevator maintenance operation device.

<Prior Art> An elevator hoistway is equipped with safety devices and various other devices and equipment necessary for safe operation of the elevator. Maintenance staff conduct periodic inspections to ensure that these equipment are operating properly.

This inspection work usually requires two maintenance personnel. For example, one of the maintenance personnel riding on the top of an elevator car operates the elevator using an operation panel installed at the top of the car. The other maintenance worker works on the equipment installed in the hoistway while the car is moving or stopped.

For this reason, Utility Model Application Publication No. 50-136160 proposes this type of elevator maintenance operation device, which allows inspection of equipment installed at the bottom of the hoistway, that is, other than the pit. The system was designed so that it could be performed by one maintenance worker.

<Problems to be Solved by the Invention> In conventional maintenance operation equipment, when inspecting equipment inside a pit, one maintenance worker enters the pit and performs the work, while the other maintenance worker You will get into the car and drive the elevator. For this reason, two maintenance personnel are still required, and there is also a risk that communication between the maintenance personnel will be insufficient, leading to a disaster.

In order to solve these problems, an invention by the same applicant as the present application allows a single maintenance worker inside the pit to safely perform inspection work on the on-site equipment and operation of the elevator car. An elevator maintenance and operation device that can perform the following has been proposed.

By the way, inspection work inside the pit includes measuring the amount of stretch of the main rope suspending the car and counterweight, and transmitting signals between the car and the control device installed in the machine room. There is work to check the running status of the moving cable for transmission, and when performing these works, the elevator must be in normal operation and the elevator must travel at high speed to the top or bottom floor. For this reason, one of the maintenance staff still entered the pit.
It is necessary for the other maintenance worker to get into the car and operate the elevator.

The present invention aims to eliminate these drawbacks, and its purpose is to provide an elevator maintenance operation system that allows a single maintenance worker inside a pit to perform various maintenance operations.

<Means for Solving the Problems> In order to achieve the above object, the present invention includes a high-speed operation changeover switch for switching to a high-speed operation mode, and a high-speed operation changeover switch installed at the other end of the transmission line, and a high-speed operation changeover switch installed at the other end of the transmission line. A blocking circuit forming means is installed at the other end to prevent operation and registration of the operation panel, and a registration circuit forming means is provided to connect the operating device and operate a registration circuit for registering a car call on a specific floor. It is characterized by

<Function> Since the elevator maintenance and operation device according to the present invention is configured as described above, first, the operating device is connected, and the blocking circuit is activated by the blocking circuit forming means to be installed inside and above the elevator car. The operation of the driver's control panel and the operation of the hall call registration device are blocked. Next, when the high-speed operation selector switch on the controller is switched to the high-speed operation side as required for maintenance work, etc., the registration circuit forming means of the controller is operated, and the maintenance personnel inside the pit can control the car on a specific floor. Call registration can also be done from inside the pit. In this way, one maintenance worker entering the pit operates the operating device connected to the other end of the transmission line, and while operating the elevator car, inspects the pit's equipment and performs maintenance work. It is possible to measure the amount of cable elongation and check the running status of the moving cable.

During this inspection work, a blocking circuit prevents anyone other than maintenance personnel from operating the operation panel inside or above the elevator car or the hall call registration device, so maintenance personnel must Inspection work can be performed safely.

<Embodiment> FIG. 4 is a longitudinal sectional view of an embodiment of the elevator maintenance and operation apparatus according to the present invention.

A control device 6a is installed in a machine room 2a provided at the top of the hoistway 1a. There is a drive machine 4a that is controlled and driven by this control device 6a, and a car 3a is connected to it via a rope 1.

Operation panel D inside and above car 3a
1 and D2, the car 3a
The structure allows for lifting and lowering operations. A transmission line 12, one end of which is connected to the control device 6a, is connected to the hoistway 1.
It is guided inside a along the side wall to a pit 7a, and the other end is connected to a plug receiver 11 provided in the pit 7a.

A maintenance person 14 inside the pit 7a can operate the car 3a by attaching a portable operating device 13 to the plug receiver 11 and operating it. At the same time when the operating device 13 is attached to the plug receiver 11, a blocking circuit is activated to block the operation of the operation panels D1 and D2 and the operation circuit of the hall call registration device 18 by the blocking circuit forming means.

FIG. 2 shows the operating device 13.

A plug 16 is fixed to the end of the cable 15,
This plug 16 allows the operating device 13 to connect to the plug receiver 1.
1. This operating device 13 includes an emergency stop switch 13a, a rising operation button 13b and a descending operation button 13c, which are registration circuit forming means 19.
A high-speed operation selector switch 13d is also provided.

FIG. 3 shows a wiring diagram of the terminal portion of the plug 16.

Using a short circuit wire as the blocking circuit forming means 17,
Short-circuit between the first and second terminals. Also the third and fourth
An upward operation button 13b is disposed between the terminals, and a downward operation button 13c is disposed between the third and fifth terminals, and these two constitute the registration circuit forming means 19. An emergency stop switch 13a is provided between the sixth and seventh terminals, and a high-speed operation selector switch 13d is provided between the eighth and ninth terminals.
Connect.

FIG. 1 shows a circuit diagram of the main parts of an elevator maintenance and operation device.

The parts surrounded by dotted lines in the figure are the respective means shown in the above explanation.

The sixth and seventh plugs of the plug 16 connected to the power terminal P
A normally closed contact 43PT ₂ of a pit operation relay 43PT is connected between the terminals of the pit operation relay 43PT. Further, an elevator stop switch ES, a safety device switch S, and an elevator emergency stop relay 50 are connected in series between the seventh terminal of the plug 16 and the power supply terminal N.

The switch OM and a low-speed operation relay 43D that enables low-speed operation on the car are connected in series between power terminals PN.

Similarly, the switch M and a low-speed operation relay 43C that enables low-speed operation within the car are connected in series between power terminals PN. Between the high-speed operation relay 43G and the contact of the switch M, there is a normally closed contact 43 of the pit operation relay 43PT.
PT ₆ is connected. Between the connection point between the high-speed operation relay 43G and the normally closed contact _43PT6 and the power terminal P, there is a normally open contact 4 of the pit operation relay 43PT.
3PT ₄ and high-speed operation selector switch 13 of controller 13
d are connected in series.

The first terminal of the plug 16 and the power terminal P are connected, and the pit operation relay 43PT is connected between the second terminal of the plug 16 and the power terminal N via a short-circuit wire when operating the car inside the pit. is connected.

Between the third terminal of the plug 16 and the power terminal P,
Normally open contact 43PT of pit operation relay 43PT ₃
is connected, and the fourth terminal of the plug 16 and the power terminal N
A normally open contact 50 ₁ of the ascending operation relay 41 and the emergency stop relay 50 is connected in series between them.
Between the power supply terminal P and the relay 41 for upward operation, a normally closed contact 43PT ₁ of the relay 43PT for pit operation,
The normally open contact 43D ₁ of the low-speed operation relay 43D and the upward operation button UP ₂ provided on the car are connected in series. A descending operation button DN ₂ is provided on the car between the connection point between the normally open contact 43D ₁ and the ascending operation button UP ₂ and the descending operation relay 42.
is connected. The other end of the descending operation relay 42 is connected to the connection point between the ascending operation relay 41 and the normally open contact 50 ₁ . In addition, normally closed contact 43PT ₁
The normally open contact 43C ₁ of the low speed operation relay 43C and the upward operation button UP ₁ provided in the car are connected in series between the connection point between the normally open contact 43D ₁ and the upward operation relay 41. It is connected. Further, a downward operation button DN ₁ provided inside the car is disposed between the connection point between the normally open contact 43C ₁ and the upward operation button UP ₁ and the downward operation relay 42.

Between the top floor car destination floor registration relay 5HA and the power terminal P, there is a normally closed contact _43PT7 of pit operation relay 43PT, a top floor car call registration button CBA,
A normally closed contact 9HA ₁ of an elevator car position detection relay (not shown) is connected in series.
A normally open contact 5HA ₁ of the top floor car destination floor registration relay 5HA is connected between the connection point between the top floor car call registration button CBA and the normally closed contact 9HA ₁ and the power terminal P. Similarly, between the lowest floor car destination floor registration relay 511 and the normally closed contact _43PT7 , there is a lowest floor car call registration button CB ₁ and a normally closed elevator car position detection relay (not shown). The closed contact 911 ₁ is connected in series. A normally open contact 511 ₁ is arranged between the connection point between the lowest floor car call registration button CB ₁ and the normally closed contact 911 ₁ and the power terminal P. plug 16
A normally open contact _43G2 of a high-speed operation relay 43G is connected between the fourth terminal of the car call registration button CBA on the top floor and the connection point between the normally closed contact _9HA1 . Similarly, from the fifth terminal of the plug 16, connect the bottom floor car call registration button CB ₁ and the normally closed contact 911.
A normally open contact _43G3 is arranged between the connection point with ₁ and 1.

A call registration button HDB is connected between the hall descending call registration relay 8HA and the power supply terminal P. A normally open contact 8HA ₁ and a normally closed contact 9HA ₂ are connected in series between the connection point between the landing hall down call registration relay 8HA and the call registration button HDB and the power terminal P, and the normally open contact 9HA ₂ and the down contact A normally closed contact 62 of a directional operation command relay (not shown) is connected in series, and further in parallel with the normally closed contact 62,
The diode D is connected to a normally open contact 10 of a running relay (not shown) which is energized during running. Similarly, the hall call registration relay 7HB and the power terminal P
A call registration button HUB is connected between.
Landing up call registration relay 7HB and registration button
A normally open contact 7HB ₁ and a normally closed contact 9HB ₂ are connected in series between the connection point with the HUB and the power supply terminal P. Further, the normally open contact 9HB ₂ and the normally closed contact 61 of the upward direction operation command relay (not shown) are connected in series, and a diode D is further arranged in parallel with the normally closed contact 61.

A high-speed operation relay 43 is connected to the bus bar of the power terminal P.
When G is de-energized, the normally closed contact _43PT5 of the pit operation relay 43PT cuts off the bus line so that car destination registration and landing call registration are not performed.
and are arranged.

Now, assume that a maintenance worker is performing various maintenance work inside an elevator car. Relay 43C for low speed operation by switching switch M to the maintenance side.
operates, and the normally open contact _43C1 closes.

Therefore, when a maintenance worker presses the upward operation button UP ₁ ,
A connection is made between the power supply terminal P, the normally closed contact 43PT ₁ , and the closed normally open contact 43C ₁ . Furthermore, since the emergency stop relay 50 operates and the normally open contact ₅₀₁ closes, the power terminal P...normally closed contact _43PT2 ...stop switch ES...safety device switch S...emergency stop relay 50... A closed circuit called power supply terminal N is formed. Therefore, by pressing the upward operation button UP ₁ , the upward operation relay 41 is activated, and the elevator car performs upward operation.

Also, when the maintenance person presses the descending operation button DN ₁ ,
In the same way as when going up, power terminal P...normally closed contact 43PT ₁ ...closed normally open contact 43C ₁ ...downward operation button DN ₁ ...downward operation relay 42...closed normally open A closed circuit called contact 50 ₁ . . . power supply terminal N is formed, and the descending operation relay 42 is activated, and the elevator car performs descending operation.

Suppose that a maintenance worker performs various maintenance work at the top of an elevator car. By switching the switch OM to the maintenance side, the low-speed operation relay 43D is activated and the normally open contact 43D ₁ is closed.

Therefore, when the maintenance worker presses the upward operation button UP ₂ on the top of the car, since the normally open contact 50 ₁ is already closed, the power terminal P...normally closed contact 43
PT ₁ ... Closed normally open contact 43D ₁ ... Button for upward operation UP ₂ ... Relay for upward operation 41 ... Normally open contact 50 ₁ ... A closed circuit called power terminal N is constructed. Therefore, the relay 41 for ascending operation is activated, and the elevator car performs an ascending operation.

Also, when the maintenance worker presses the descending operation button DN ₂ on the top of the car, in the same way as when ascending, the power terminal P... normally closed contact 43PT ₁ ... closed normally open contact 43D ₁ ... ...Button for descending operation DN ₂ ...Relay for descending operation 42 ... Closed normally open contact 50 ₁ ...
...A closed circuit called the power supply terminal N is constructed, and the descending operation relay 42 is activated, and the elevator car performs the descending operation.

By operating the stop switch ES, which can be operated both inside and above the car, the emergency stop relay becomes inactive and the normally open contact ₅₀₁ returns to the open state. For this,
Both the upward operation relay 41 and the downward operation relay 42 become inoperable.

On the other hand, when working inside the pit, the maintenance worker attaches the operating device 13 to the plug receiver 11. At this time, the first and second terminals of the plug 16 are short-circuited by the blocking circuit forming means 17, and the power terminal P...the blocking circuit forming means 17...the pit operation relay 43PT
...A closed circuit called power supply terminal N is constructed. In this way, due to the operation of pit operation relay 43PT,
Normally closed contacts 43PT ₁ and 43PT ₂ are opened.

In other words, the normally closed contact 43PT ₁ is open, so the buttons UP ₁ and UP ₂ for upward operation and the button for downward operation
DN ₁ and DN ₂ become inoperable. Therefore, even if each button is erroneously operated, neither the up-operation relay 41 nor the down-operation relay 42 will operate, allowing maintenance personnel to safely perform various maintenance tasks.

Since the operating device 13 is attached to the plug receiver 11, there is also a button 13b for upward operation between the third and fourth terminals of the plug 16, a button 13c for downward operation between the third and fifth terminals, and a button 13c for downward operation between the third and fifth terminals. An emergency stop switch 13a is arranged between the sixth and seventh terminals.

As a result, the maintenance personnel inside the pit operate the above-mentioned buttons and switches to raise, lower, and stop the elevator car.

Next, we will explain what happens when an elevator is operated at high speed inside a pit.

When the maintenance worker sets the high-speed operation selector switch 13d to the high-speed side, the power terminal P...normally open contact _43PT4 ...
A closed circuit is constituted by high-speed operation selector switch 13d...high-speed operation relay 43G...power terminal N, so that even if switch M is switched to the low-speed side for maintenance, the high-speed operation relay 43G is energized. The elevator car is now ready for high-speed operation. After entering the high-speed operation state inside the pit, press button 13b for upward operation or button 1 for downward operation.
When 3c is operated, power terminal P...normally open contact 43
PT ₃ ...Rising operation button 13b contact 43G ₂ ...Normally closed contact 9HA ₁ ...Top floor car destination relay 5HA...
...Circuit called power terminal N, or power terminal P...Normally open contact 43PT ₃ ...Downward operation button 13c
... Contact 43G ₃ ... Normally closed contact 911 ₁ ... Bottom floor car destination floor registration relay 511 ... Either the circuit called power terminal N connects the top floor car destination floor registration relay 5HA or the bottom floor car Destination registration relay 511 is activated. These two registered relays are self-held by either 5HA ₁ or 511 ₁ , which are normally open contacts, and even if the ascending operation button 13b or the descending operation button 13c is released, the device will not arrive at the destination floor. It will be energized until When each car destination floor registration relay is energized, the elevator car travels toward the registered specific floor by a known circuit.

In this way, inside the pit, the operating device 13
One maintenance worker can operate the elevator at low speed, stop, and high speed by operating the operation panel installed on the top of the car and inside the car. Can perform maintenance work.

Furthermore, even if a maintenance worker is using the controller 1 inside the pit, and someone other than the maintenance worker accidentally switches to the high-speed operation side using the switch M on the operation panel D ₁ inside the car, Pit driving relay 43
Since the high-speed operation relay 43G is not energized by the normally closed contact _43PT6 of the PT, the elevator car is not operated at high speed. In addition, even if the elevator is switched to high-speed operation inside the pit and the elevator is operated at high speed, the pit operation relay 43
Since the normally closed contact _43PT7 of the PT prevents registration of the car destination floor registration button on the operation panel _D1 inside the car, high-speed operation is not performed by anyone other than maintenance personnel.

In this way, as shown in several places in this embodiment, a maintenance worker can safely perform various maintenance work by himself/herself.

<Effects of the Invention> As explained in detail above, the present invention includes a high-speed operation changeover switch that enables high-speed operation in the operating device,
A blocking circuit forming means for preventing elevator operation by anyone other than maintenance personnel and a car call registration circuit forming means for a specific floor are installed, so inspection work can be carried out at low speeds even from inside the pit, and maintenance work can be carried out at high speeds. Maintenance work for various equipment in the hoistway, such as measuring the amount of cable extension and checking the running status of moving cables, can now be carried out safely by a single maintenance worker. This not only saves labor, but also eliminates the need for communication between maintenance personnel, which is required when two people work, and eliminates similar safety problems.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing the configuration of an embodiment of an elevator maintenance and operation device of the present invention, and FIG. 2 is a perspective view showing the configuration of an operating device used in the embodiment of the present invention.
FIG. 3 is a wiring diagram of the plug terminal portion of the operating device shown in FIG. 2, and FIG. 4 is a longitudinal sectional view showing the configuration of an embodiment of the present invention. 1a... Hoistway, 2a... Machine room, 3a... Car, 4a... Drive machine, 6a... Control device, 7
a...Hoistway bottom, 11...Plug receiver, 12...
...Transmission line, 13...Control device, _D1 , _D2 ...Driving operation panel, 13a...Emergency stop switch, 13d...
...High-speed operation selector switch, 16...Plug, 17
... Blocking circuit forming means, 19 ... Registration circuit forming means, 41 ... Relay for upward operation, 42 ... Relay for downward operation, 43c ... Relay for low-speed operation inside the car, 43D ... Relay for low-speed operation on the car , 43G
...Relay for high-speed operation, 43PT...Relay for pit operation, 50...Relay for emergency stop, 5HA...
...Top floor car destination floor registration relay, 511...Bottom floor car destination floor registration relay.

Claims (1)

[Claims] 1. A car that is controlled to move up and down in the hoistway by a control device installed in a machine room, an operation panel that is installed inside and above the car to operate the car up and down, and the control panel described above. In an elevator maintenance operation device comprising a transmission line having one end connected to the device and the other end led to the bottom of the hoistway, and a portable operator detachably attached to the other end of the transmission line, the above operation is performed. a high-speed operation selector switch for switching to a high-speed operation mode; a blocking circuit forming means for preventing operation of the operation panel and registration of a hall call when the operation device is connected to the other end of the transmission line; 1. A maintenance operation device for an elevator, comprising: a registration circuit forming means for operating a registration circuit that can register a car call for a specific floor when an elevator is connected.