WO2018100599A1

WO2018100599A1 - Elevator maintenance control apparatus and elevator maintenance control method

Info

Publication number: WO2018100599A1
Application number: PCT/JP2016/085262
Authority: WO
Inventors: 潤鳥谷部; 直樹高山; 寛典金田; 少軍馮; 卓也大沢
Original assignee: 株式会社日立製作所
Priority date: 2016-11-29
Filing date: 2016-11-29
Publication date: 2018-06-07

Abstract

When performing maintenance work, an elevator is stopped by turning on a pit stop switch, and the elevator is switched from a normal operation mode to a maintenance operation mode by a pit maintenance apparatus or an on-car maintenance apparatus. When the maintenance work is completed, the switch of the pit maintenance apparatus or the on-car maintenance apparatus is switched to the normal mode, and the pit stop switch is pressed to establish the normal operation mode. Then a maintenance worker exits from a pit or a car, closes a landing-side door, and carries out an encryption operation on the hall call button on the lowest floor. All the above-described switch operation procedures are input into a microcomputer, and, only when the sequence of all switch operation procedures matches a preset procedure sequence is the elevator returned from the maintenance operation mode to the normal operation mode.

Description

Elevator maintenance control device and elevator maintenance control method

The present invention relates to an elevator maintenance control device and an elevator maintenance control method.

There are two types of elevators: a machine room (MR: Machine Room) on the roof of the building and a machine room (MRL: Machine Room Less) on the building. In the MR elevator, a control panel for controlling the elevator is provided in the machine room. In the MRL elevator, a control panel for controlling the elevator is provided in the hoistway.

When performing maintenance work on an elevator regardless of whether it is MR or MRL, it can be considered that maintenance work is performed in a pit by a maintenance worker or maintenance work is performed on an elevator car. Conventionally, when performing maintenance work in a pit, the elevator car is stopped by pressing (inserting) a stop switch installed in the pit. When there is an operation mode switch in the pit, the switch is switched to the maintenance operation mode to perform maintenance work.
In addition, as a newly added item in EN81-20 / 50, which is the European standard for elevators, when returning from pit maintenance work to normal operation, there is also a request to return after operation outside the pit.

Patent Document 1 discloses an elevator apparatus that performs inspection by switching from normal operation to inspection (maintenance) operation, and improves the safety of the worker during the inspection and the safety during the subsequent normal operation. An elevator apparatus is disclosed.
The technique described in Patent Document 1 is provided with an inspection operation device having a changeover switch for switching between normal operation and inspection operation and an inspection operation switch for switching between the inspection side and the normal side, and when the inspection operation switch is operated to the inspection side. Raise or lower the car as a check operation.

Also, the technology described in Patent Document 1 is provided with a safety controller that brakes the car by cutting off the brake power source and the power source independently of the elevator controller. The safety controller controls the elevator so that the normal operation is invalidated and the inspection operation is validated when the changeover switch is switched to the inspection operation.

JP 2013-216411 A

However, in conventional elevator equipment, even when maintenance personnel are in the pit, the switch in the pit (or on the car) is accidentally pressed, resulting in maintenance status regardless of the maintenance staff's intention. Sometimes returned to normal. And if the mode switch in the pit is returned to the normal operation mode, the elevator will return to the normal operation mode from the maintenance operation mode, and the car will move automatically. there were.

An object of the present invention is to provide an elevator maintenance control device and an elevator control method that do not return from the maintenance operation mode to the normal operation mode when the maintenance staff is in the pit.

In order to solve the above problems, for example, the configuration described in the claims is adopted.
The elevator maintenance control device of the present invention includes an elevator car, an electric motor that drives the elevator car, a counterweight connected by an elevator car and a rope via the electric motor, and a control panel that drives the electric motor. In addition, a pit stop device, a pit maintenance device, a hall call button, and a microcomputer provided on the control panel are provided for elevator maintenance control.

The stop device in the pit has a switch that is arranged in the pit and stops the elevator car. The pit maintenance device has a switch and switches between elevator maintenance operation and normal operation to raise or lower the elevator car. The hall call button on the lowest floor switches the elevator from the maintenance operation mode to the normal operation mode by a cryptographic operation of the switch. The microcomputer captures all the switch operations and stores the order of the respective switch operations. When all the switch operations are performed in a predetermined order, the maintenance operation mode is changed to the normal operation mode. It is characterized by switching.

The elevator maintenance control method of the present invention is an elevator maintenance control method for raising or lowering an elevator car by switching the normal operation mode to the maintenance operation mode, and the following procedures (a) to (h) are performed. Including.
(A) Pressing (pushing) the switch of the pit stop device to make it compatible with the maintenance operation mode,
(B) Procedure for switching the switch contact of the pit maintenance device to the maintenance operation mode,
(C) a procedure for switching the switch switch contact of the pit maintenance device to the normal operation mode after the maintenance work is completed;
(D) Pressing (returning) the switch of the pit stop device to make it correspond to the normal operation mode,
(E) Procedures for maintenance personnel to escape from the pit and close the landing door,
(F) Procedure for maintenance personnel to cryptographically operate the hall call button on the lowest floor,
(G) A procedure for fetching the operation procedures of all the switches into a microcomputer and grasping the order of the switch operations by the microcomputer;
(H) A procedure for returning the elevator from the maintenance operation mode to the normal operation mode when the order of all the switch operation procedures coincides with the preset switch operation procedure.

According to the present invention, it is possible to grasp the order of the switch operations and return from the maintenance operation to the normal operation. Therefore, after the maintenance staff has surely escaped from the pit, the return from the maintenance operation mode to the normal operation mode is possible. This makes it possible to improve the safety of maintenance personnel regarding elevator maintenance.
Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

1 is an overall configuration diagram of an elevator maintenance control device according to an embodiment of the present invention. It is a figure which shows the connection state of the changeover switch and microcomputer in the elevator maintenance control apparatus which is the example of 1 embodiment by this invention. It is a figure which shows the hardware constitutions in the elevator maintenance control apparatus which is an example of one Embodiment by this invention. It is a functional block diagram showing the function of the microcomputer in the elevator maintenance control apparatus which is an example of one Embodiment by this invention. It is a flowchart which shows the flow of a process until it returns to the normal operation mode from the maintenance operation mode in the elevator maintenance control apparatus which is an example of one Embodiment by this invention.

<Overall Configuration of One Embodiment of the Present Invention>
Hereinafter, an example of an elevator maintenance control apparatus and an elevator maintenance control method (hereinafter referred to as “this example”) according to an embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a configuration diagram showing an overall outline of the elevator maintenance control device of this example.
As shown in FIG. 1, the elevator maintenance control device of this example is installed in an elevator car 11, a counterweight (not shown) coupled to the elevator car 11 and a rope 10, and the elevator car 11. A positive detector (photoelectric sensor) 12 is provided. The positive detector 12 has a function of indicating which floor the elevator car 11 is currently on in conjunction with the shielding plate 13 installed on each floor on the landing side.
In addition to being arranged for each floor, the shielding plate 13 is also arranged in the pit 15 which is a space necessary for maintenance and inspection.

A positive detector (photoelectric sensor) 12 of the elevator car 11 is normally composed of a plurality of light emitting elements and light receiving elements (not shown). When the positive detector 12 comes to the position of a shielding plate 13 installed on each floor, the light emitting element The light from the light is shielded and the switch function works. If the hall call button 16 or 17 is pressed in the hall on the landing side, the elevator car 11 stops on the floor. Then, the elevator car door opens, and the landing side door 14 opens accordingly. Here, the hall call button 17 on the lowest floor has a function of accepting a cryptographic operation described later in addition to the function of the hall call button 16 on the other floor, and therefore, a different reference from the hall call button 16 on the other floor is attached. ing.

The pit 15 is provided with a pit stop device 18 and a pit maintenance device 19. A car maintenance device 20 is provided above the elevator car 11.
The pit maintenance device 19 and the car maintenance device 20 are devices including a switch group having the same structure and a microcomputer (not shown) (see FIG. 3B) that controls the switch group. When maintenance personnel are performing maintenance work in the pit 15, only the switch group of the pit maintenance device 19 is used. Therefore, the switch group of the car maintenance device 20 does not switch to the maintenance mode, and the normal operation mode state is changed. maintain.
On the contrary, when the maintenance work of the maintenance staff is performed on the elevator car 11, the switch group of the car maintenance device 20 is used for the maintenance work. In that case, the switch group of the pit maintenance device 19 maintains the state of the normal operation mode without being switched to the maintenance operation mode.

Further, as shown in FIG. 1, the landing-side door 14 is provided with a landing-side door switch (not shown) and a microcomputer for controlling the same. In the vicinity of the landing door 14, hall call buttons 16 (hall call buttons 17 on the lowest floor) are provided on each floor. The hall call buttons 16 and 17 also include a switch group (not shown) and a microcomputer for controlling the switch group. In particular, the hall call button 17 on the lowest floor accepts a cryptographic operation for the maintenance person to switch from the maintenance operation mode to the normal mode after the maintenance work is completed in addition to the function of calling the elevator car 11 as described above. It has a function.

As shown in FIG. 1, each microcomputer (not shown) provided in the landing side door 14, hall call buttons 16, 17, pit stop device 18, pit maintenance device 19 and car maintenance device 20 is provided via a buffer (FIG. 2). Are connected to an integrated microcomputer 21 provided in the control panel. The integrated microcomputer 21 provided in the control panel controls the overall operation of the elevator in cooperation with the microcomputer included in each switch. As will be described later, the microcomputer 21 of the control panel includes the status of each switch of the landing side door 14, hall call buttons 16 and 17, the pit stop device 18, the pit maintenance device 19, and the on-car maintenance device 20. A storage unit is provided for recording the operation order.
The microcomputer 21 is connected to the elevator controller 22. The elevator controller 22 controls the elevation of the elevator car 11 via the electric motor 23.

<Connection and operation of each switch and microcomputer of elevator maintenance control device of this example>
Referring to FIG. 2, the connection relationship between landing door 14, hall call buttons 16, 17, pit stop device 18, pit maintenance device 19, on-car maintenance device 20, and microcomputer 21 in the elevator maintenance control device of this example. Will be described.
The landing-side door 14 has a landing-side door switch contact 14a installed on a door on each floor, and hall call buttons 16 and 17 on each floor including the lowest floor also have hall call button switch contacts 16a installed on each floor. , 17a. The pit stop device 18 has a pit stop switch contact 18a, and the pit maintenance device 19 has a pit maintenance changeover switch contact 19a. Similarly, the car maintenance device 20 has a car maintenance changeover switch contact 20a.

The landing-side door switch contact 14a is connected to the landing-side door switch input buffer 14b, and the hall call buttons 16 and 17 on each floor are connected to the hall call

button switch contacts

16a and 17a. The pit stop switch contact 18a is connected to the pit stop switch input buffer 18b.

The pit maintenance changeover switch contact 19a is connected to the pit maintenance changeover switch normal side input buffer 19b in the normal operation mode, and is connected to the pit maintenance changeover switch maintenance side input buffer 19c in the maintenance operation mode.
Similarly, the car maintenance switch switch contact 20a is also connected to the car maintenance switch normal side input buffer 20b in the normal operation mode, and is connected to the car maintenance switch switch maintenance side input buffer 20c in the maintenance operation mode.

Current is supplied to each changeover switch contact point from a common power source through a current limiting resistor (no sign). When the contact point of each changeover switch is closed, each input buffer connected thereto is turned on, and the microcomputer is turned on. 21 is supplied with a signal. Hereinafter, ON / OFF of each changeover switch and the control operation of the microcomputer 21 will be described.

In the elevator maintenance control device of this example, the ON / OFF state of the changeover switch contact 14a of the landing side door 14 is taken into the microcomputer 21 via the landing side door changeover switch buffer 14b. That is, the landing-side door changeover switch buffer 14b is turned on when the landing-side door changeover switch contact 14a is turned on, and the fact that the changeover switch contact 14a is turned on is taken into the microcomputer 21.

Next, when the pit stop device 18 is pressed by the maintenance staff, a signal notifying that the pit stop switch switch contact 18a is turned on is taken into the microcomputer 21 via the pit switch switch buffer 18b. When the pit stop device 18 is pressed (turned on), the elevator car 11 is stopped and maintenance work for the elevator is started.
Then, the pit maintenance changeover switch contact 19a of the pit maintenance device 19 is switched to the maintenance operation mode, and a signal indicating that the pit maintenance changeover switch maintenance side buffer 19c is turned on is taken into the microcomputer 21.

Similarly, the state of the car maintenance switch switch contact 20a is taken into the microcomputer 21 through the car maintenance switch normal buffer 20b or the car maintenance switch maintenance buffer 20c.
As described above, the pit maintenance device 19 and the car maintenance device 20 are configured by the same changeover switch group. That is, a maintenance worker who performs maintenance work uses the pit maintenance device 19 when performing maintenance work in the pit 15, and uses the on-car maintenance device 20 when performing maintenance work on the elevator car 11. Use for maintenance work.

<Hardware configuration of elevator maintenance control device of this example>
FIG. 3 shows a hardware configuration of the elevator maintenance control apparatus of this example.
FIG. 3A shows a hardware configuration of the microcomputer 21 installed on a control panel (not shown) of the elevator maintenance control device of this example. FIG. 3B shows a hardware configuration of a microcomputer installed in each switch of the landing side door 14, hall call buttons 16, 17, pit stop device 18, pit maintenance device 19, and on-car maintenance device 20.

As shown in FIG. 3A, a microcomputer 21 provided in a control panel (not shown) includes a CPU (Central Processing Unit) 31, a ROM (Read Only Memory) 32, a RAM (Random Access Memory) 33, and a nonvolatile memory connected to a bus 30. A storage 34 is provided. The microcomputer 21 includes a network interface 35 and an interface (I / F) 36 for performing communication with the outside.

CPU31 reads the program code of the software which implement | achieves each function relevant to the elevator maintenance control apparatus of this example from ROM32, and performs it. In the RAM 33, variables, parameters, and the like generated during the arithmetic processing are temporarily written. The function of the control unit 40 (see FIG. 4) of the microcomputer 21 is realized by the CPU 31 executing the program code recorded in the ROM 32.

As the nonvolatile storage 34, for example, an HDD (Hard Disk Drive), an SSD (Solid State Drive), a flexible disk, an optical disk, a magneto-optical disk, a CD-ROM, a CD-R, a magnetic tape, a nonvolatile memory, or the like is used. It is done. In addition to the OS (Operating System) and various parameters, the nonvolatile storage 34 stores a program for causing the microcomputer 21 to function.
In the ROM 32 and the nonvolatile storage 34, programs and data necessary for the operation of the CPU 31 are recorded. For this reason, this program is permanently stored in the ROM 32 and the nonvolatile storage 34. A part of the nonvolatile storage 34 is used for a recording unit 43 shown in FIG.

As the network interface 35, for example, a NIC (Network Interface Card) or the like is used. Through the network interface 35, the microcomputer 21 provided in the control panel is connected to the microcomputer provided in each changeover switch and the state of the changeover switch. Exchange information about. The interface 36 is connected to the elevator controller 22 and supplies control information from the microcomputer 21 to the elevator controller 22.

FIG. 3B shows a hardware configuration of a microcomputer (not shown) installed in each switch of the landing side door 14, hall call buttons 16 and 17, pit stop device 18, pit maintenance device 19, and car maintenance device 20. Is. Similar to the configuration of the microcomputer 21 shown in FIG. 3A, a CPU 31a, a ROM 32a, a RAM 33a, and a nonvolatile storage 34a are connected by a bus 30a. 3A differs from the hardware of the microcomputer shown in FIG. 3A in that each switch (reference symbol “S”) of the landing side door 14, hall call buttons 16, 17, pit stop device 18, pit maintenance device 19, and car maintenance device 20 on the bus 30 a ) Is connected. The state of each switch S is taken into the nonvolatile memory 34a via an interface (not shown).

<Software configuration of elevator maintenance control device of this example>
FIG. 4 is a functional block diagram showing, as a block, software functions executed by the microcomputer 21 provided in the control panel of the elevator maintenance control apparatus of this example.
The microcomputer 21 includes a control unit 40, a signal acquisition unit 41, a mode switching unit 42, a storage unit 43, a signal acquisition order determination unit 44, an information output unit 45, and a normal operation return unit 46 as software functions to be executed.

The control unit 40 shows the function of the CPU 31 in FIG. 3A and controls the entire microcomputer 21. The signal acquisition unit 41 is turned on or off from the microcomputer of the landing side door 14, the hall call buttons 16, 17, the pit stop device 18, the pit maintenance device 19, and the car maintenance device 20 or the like. Capture information.
The mode switching unit 42 functions to switch between the maintenance operation mode and the normal operation mode based on the information acquired from the signal acquisition unit 41.

The storage unit 43 is in the on or off state of each changeover switch acquired by the signal acquisition unit 41, the landing side door 14, hall call buttons 16 and 17, the pit stop device 18, the pit maintenance device 19, and the on-car maintenance device 20. The order in which each changeover switch is switched is stored. As the storage unit 43, the nonvolatile storage 34 of FIG. 3A is used.
The signal acquisition order determination unit 44 determines whether or not the switching order of the changeover switch contacts stored in the storage unit 43 has been performed in the normal switching procedure when performing maintenance work. Note that the determination by the signal acquisition order determination unit 44 is performed only when the mode switching unit 42 switches to the maintenance operation mode.

The information output unit 45 is configured to display a warning on a display unit of a control panel (not shown) when the switching order of the switches acquired by the signal acquisition order determination unit 44 is different from a predetermined normal acquisition order. Display. On the other hand, the normal operation return unit 46 switches from the maintenance operation mode to the normal operation mode when the order in which the signals are acquired by the signal acquisition order determination unit 44 matches the predetermined normal acquisition order.

<Processing flow of elevator maintenance control device of this example>
Next, with reference to the flowchart of FIG. 5, the procedure (process flow) in which the elevator maintenance control apparatus of this example returns from the maintenance operation mode to the normal operation mode will be described.
As shown in FIG. 5, when the process is started, it is first determined whether or not a maintenance work in the pit 15 (hereinafter referred to as “pit maintenance work”) has been started (step S51). If the pit maintenance work has not been started (No in step S51), the process is terminated as it is.

If it is determined in step S51 that the pit maintenance work has been started (Yes in step S51), the maintenance person opens the landing side door 14 on the lowest floor (step S52). At this time, the contact 14a of the landing side door switch is turned off (opened), and the landing side switch input buffer 14b is controlled to be turned off. And the memory | storage part 43 memorize | stores that the switching contact 14a of the landing side door switch is OFF.

Then, maintenance personnel enter the pit 15 (step S53), and maintenance work is started. When the maintenance work is started, first, the maintenance staff depresses (puts in) the pit stop device 18 to stop the elevator (step S54). That is, the pit stop switch switching contact 18b is turned on, and as a result, the pit stop switch input buffer 18b is turned on. Then, the storage unit 43 stores that the pit stop switch switching contact 18b is on. When the pit stop switch switching contact 18b is turned on, the elevator car 11 stops for maintenance work.

Next, the pit maintenance switching switch contact 19a is switched to the maintenance operation mode side by the pit maintenance device 19 (step S55). Then, the pit maintenance changeover switch maintenance side input buffer 19c of the pit maintenance device 19 is turned on, and the pit maintenance changeover switch normal side input buffer 19b of the pit maintenance device 19 is turned off. The on-car maintenance switch switch contact 20a of the on-car maintenance device 20 does not switch to the maintenance operation mode and remains in the normal operation mode. That is, in the on-car maintenance device 20 of FIG. 2, the on-car maintenance switch maintenance side input buffer 20c is maintained in an off state, and the on-car maintenance switch normal side input buffer 20b is maintained in an on state. . In this state, pit maintenance work is performed by maintenance personnel.

Next, it is determined whether or not the maintenance work by the maintenance staff has been completed (step S56). If it is determined in step S56 that the maintenance work has been completed, the pit maintenance switching switch contact 19a of the pit maintenance device 19 is switched to the normal operation mode (step S57). That is, the pit maintenance switching switch contact maintenance side input buffer 19c of the pit maintenance device 19 is turned off, and the pit maintenance switching switch contact normal side input buffer 19b of the pit maintenance device 19 is turned on. Also at this time, the changeover switch contact 20a of the car maintenance device 20 remains in the normal operation mode. That is, the maintenance input switch 20c on the maintenance switch on the maintenance operation mode side is off, and the maintenance input switch 20b on the maintenance switch normal side input buffer 20b is on.

Next, the pit stop switch contact 18a of the pit stop device 18 is returned to its original position, and the elevator is restored from the maintenance state mode to the normal state mode (step S58). Then, the maintenance staff escapes from the pit 15 and closes the landing side door 14 (step S59). At this time, since the landing side door switch contact 14a is closed, the landing side changeover switch input buffer 14b is turned on.
Subsequently, the maintenance staff performs a cryptographic operation using the hall call button 17 on the lowest floor (step S60). Here, the cryptographic operation means an operation determined in advance by maintenance personnel engaged in maintenance of the elevator, and means, for example, a promise that the hall call button 16 is pressed twice per second.

As described above, FIG. 5 shows a regular procedure as an operation procedure of the maintenance staff in the maintenance operation mode. However, there is a case where the operation is not actually performed in practice. In order to indicate this, in FIG. 5, steps S54, S55 and steps S57 to S60 are shown surrounded by a dotted line, and the whole is shown surrounded by a thick solid line. Since maintenance personnel who perform maintenance work are also humans, it cannot be said that there is no mistake. The present invention aims to ensure the safety of the maintenance staff even if the maintenance staff makes a mistake in the work procedure.

The maintenance personnel operations described above are listed as regular operating procedures as follows.
(1) The pit stop switch contact 18a of the pit stop device 18 is depressed (inserted) to correspond to the maintenance operation mode: Step S54,
(2) Switching the pit maintenance switching switch contact 19a of the pit maintenance device 19 to the maintenance operation mode: Step S55,
(3) After the maintenance work is completed, the pit maintenance changeover switch contact 19a of the pit maintenance device 19 is switched to the normal operation mode: Step S57,
(4) The pit stop switch contact 18a of the pit stop device 18 is depressed (returned to the original state) to correspond to the normal operation mode: Step S58,
(5) The maintenance staff escapes from the pit and closes the landing side door: Step S59,
(6) The maintenance staff performs a cryptographic operation on the hall call button 17 on the lowest floor: Step S60.

Next, when the above operation is completed, the signal acquisition order determination unit 44 of the microcomputer 21 determines whether or not the operation in the maintenance mode has been performed according to the procedures (1) to (6) (step S61). . In the determination in step S61, the signal acquisition order determination unit 44 determines whether the actual operation by the maintenance staff has been performed according to a predetermined regular procedure.

When it is determined in step S61 that the operation in the maintenance operation mode is not performed according to the procedures (1) to (6) (No in step S61), the information output unit 45 of the microcomputer 21 controls the control panel (not shown). Is displayed to indicate that a trouble has occurred (step S62). For example, a message such as “Return operation of normal operation was not performed according to the regular procedure. Please perform the operation again according to the regular procedure.” Is displayed. Alternatively, instead of the message as described above, a display indicating that the normal procedure is not performed may be performed using a lamp or the like.

When a trouble is displayed on the control panel in step S62, maintenance is performed again by the normal operation procedure shown in the above (1) to (6) (step S63). In step S61, it is again determined whether or not the maintenance operation has been performed according to the regular procedures (1) to (6). If it is determined in step S61 that the operation has been performed according to the normal operation procedure (Yes in step S61), the elevator operation is returned from the maintenance operation mode to the normal operation mode (step S64), and the process is terminated. .

The elevator maintenance work flow shown in the flowchart of FIG. 5 has been described as a work performed by a maintenance worker entering the pit 15 and using the pit maintenance device 19, but the on-car maintenance device 20 instead of the pit maintenance device 19 is described. It is also possible to perform maintenance work using. In this case, the maintenance operation mode and the normal operation mode are switched using the car maintenance device 20, but the actual situation is not different from the case where the pit maintenance device 19 is used.

As described above, the elevator maintenance control device and the elevator maintenance control method of the present invention have been described according to one embodiment. However, the present invention is not limited to the embodiment disclosed in the specification and the drawings, and is claimed. Other application examples and modification examples are included as long as they do not deviate from the contents described in the above.

Each of the above-described configurations, functions, processing units, processing means, and the like may be realized by hardware by designing a part or all of them with, for example, an integrated circuit. Each of the above-described configurations, functions, and the like may be realized by software by interpreting and executing a program that realizes each function by the processor. Information such as programs, tables, and files for realizing each function can be stored in a recording device such as a memory, a hard disk, an SSD (Solid State Drive), or a recording medium such as an IC card, an SD card, or a DVD.
Further, the control lines and information lines indicate what is considered necessary for the explanation, and not all the control lines and information lines on the product are necessarily shown. Actually, it may be considered that almost all the components are connected to each other.

DESCRIPTION OF SYMBOLS 10 ... Rope for operation, 11 ... Elevator car, 12 ... Positive detector (photoelectric sensor), 13 ... Shield plate, 14 ... Door on landing side, 14a ... Door switch contact on landing side , 14b ... landing side door switch input buffer, 15 ... pit, 16, 17 ... hall call button, 16a, 17a ... hall call button switch contact, 16b, 17b ... hall call button switch Input buffer, 18 ... pit stop device, 18a ... pit stop switch contact, 18b ... pit stop switch input buffer, 19 ... pit maintenance device, 19a ... pit maintenance changeover switch contact, 19b ..Pit maintenance changeover switch normal side input buffer, 19c... Pit maintenance changeover switch maintenance side input buffer, 20. 20a ... maintenance switch on the car, 20b ... maintenance switch on the car normal side input buffer, 20c ... maintenance switch on the car maintenance side input buffer, 21 ... microcomputer, 22 ... Elevator controller, 23 ... electric motor, 30, 30a ... bus, 31, 31a ... CPU, 32, 32a ... ROM, 33, 33a ... RAM, 34, 34a ... nonvolatile Storage, 35, 35a ... Network interface, 40 ... Control unit, 41 ... Signal acquisition unit, 42 ... Mode switching unit, 44 ... Signal acquisition order determination unit, 45 ... Information output 46, normal operation return part

Claims

Elevator car,
An electric motor for driving the elevator car;
A counterweight connected to the elevator car and a rope via the electric motor;
A control panel for driving the electric motor;
A pit stop device disposed in the pit and having a switch for stopping the elevator car;
A pit maintenance device that has a switch and switches the elevator maintenance operation and normal operation to raise or lower the elevator car;
The hall call button on the lowest floor that switches the elevator from the maintenance operation mode to the normal operation mode by the cryptographic operation of the switch,
A microcomputer provided in the control panel, which takes in all the switch operations and stores the order of the switch operations;
The elevator maintenance control device, wherein the microcomputer switches from the maintenance operation mode to the normal operation mode when the operations of all the switches are performed in a predetermined order set in advance.
Furthermore, it has a switch having the same configuration as the pit maintenance device, switches between the maintenance operation mode and the normal operation mode to raise or lower the elevator car, and when performing maintenance operation with the pit maintenance device, The elevator maintenance control apparatus according to claim 1, further comprising an on-car maintenance apparatus for driving.
The microcomputer is
A signal acquisition unit for acquiring operating states of all the switches;
Based on the signal of the switch of the pit maintenance device acquired by the signal acquisition unit, a mode switching unit that switches the elevator from the normal operation mode to the maintenance operation mode,
A storage unit for storing the order in which all the switches acquired by the signal acquisition unit are switched;
Signal acquisition order determination that determines whether the order of switching of all the switches acquired by the signal acquisition unit is a predetermined regular switching order when the mode switching unit is switched to the maintenance operation mode. The elevator maintenance control device according to claim 1.
When the signal acquisition order determination unit determines that the switching order of all the switches acquired by the signal acquisition unit is not a predetermined normal switching order, the signal acquisition order determination unit determines the normal order again with respect to the control panel. Is displayed to indicate that switch operation is to be performed,
The normal operation from the maintenance operation mode when the signal acquisition order determination unit determines that the switching order of all the switches acquired by the signal acquisition unit is a predetermined regular switching order. Return to mode,
The elevator maintenance control apparatus according to claim 3.
An elevator maintenance control method for switching the normal operation mode to the maintenance operation mode to raise or lower the elevator car,
The procedure to support the maintenance operation mode by pressing the switch of the pit stop device,
Procedure for switching the switch switch contact of the pit maintenance device to maintenance operation mode,
After maintenance work, the procedure to switch the switch contact of the pit maintenance device to normal operation mode,
The procedure of returning to the normal operation mode by pressing the switch of the pit stop device,
Procedures for maintenance personnel to escape from the pit and close the landing door,
After the maintenance staff escapes from the pit, the procedure to cryptographically operate the hall call button on the lowest floor,
Procedures for capturing all switch operating procedures into a microcomputer and grasping the order of switch operations by the microcomputer;
A procedure for returning the elevator from the maintenance operation mode to the normal operation mode only when the order of all procedures matches the preset procedure;
Elevator maintenance control method.