Elevator maintenance operation control device and method

Abstract

To provide an elevator maintenance operation control device that eliminates the need for a wireless remote control for special operations, is simplified, and can easily ensure safety even if the number of maintenance personnel is reduced.SOLUTION: There is provided an elevator maintenance operation control device that can control the drive mechanism so that the stop height of a car can be set to a height different from normal operation for maintenance work, comprising a plurality of platform operation units arranged at a platform to call a car, and a controller having a computer capable of controlling at least the stop height of the car by means of command signals corresponding to the operation of the platform operation unit. When the controller detects that a predetermined platform operation unit has been operated in a specific manner, the controller controls the drive mechanism of the car to be maintained to call the car to be maintained to the platform and sets the stop height to a space immediately above or below the outside of the car so that maintenance personnel can move from the platform.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an elevator maintenance operation control device and method. [Background technology]

[0002] Conventionally, elevator maintenance work requires at least two people, and the operational procedures before starting the maintenance work are complicated. Therefore, a car operation system that simplifies the setting of the car height suitable for maintenance work by using wireless remote control is known (for example, Patent Document 1). Furthermore, a technology is also known in which, instead of a wireless remote device, a control panel or the like is installed at least at the entrance / exit of a predetermined floor, inside the car, or on top of the car as the means for setting the car height (for example, Patent Document 2).

[0003] On the other hand, in order to ease restrictions on elevator users, there has also been a demand for maintenance that can be applied to elevators while the elevator is operating normally. For example, it is desirable to be able to select between a normal operation mode (also referred to as "normal mode," "normal operation," or simply "normal") and a maintenance operation mode (hereinafter also referred to as "maintenance mode," "maintenance operation," or simply "maintenance"), and to facilitate switching between the two modes. On the other hand, to prevent erroneous operation by the public, this switching operation needs to be a special operation that is not known to general users, but is known only to building managers and maintenance workers.

[0004] As such, a long press on a public operating means is known as a special operation that prevents erroneous operation by the public and also makes it easy to switch between normal mode and maintenance mode (for example, Patent Document 3). Also, in a group control elevator, a control method is known in which, when the overall controller determines that a long press has been performed, the car scheduled for maintenance is moved in accordance with the service status of the other cars (for example, Patent Document 4). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-256006 [Patent Document 2] Special Publication No. 7-39319 [Patent Document 3] Japanese Patent Application Laid-Open No. 2016-155675 [Patent Document 4] WO2020 / 026337 publication Summary of the Invention [Problem to be solved by the invention]

[0006] The technology of Patent Document 1 has the problem that if it is necessary to maintain high quality remote control wireless communication between a wireless remote control transmitter / receiver attached to an elevator control panel in the upper floors of a building (such as a tower) and a remote control carried by a maintenance worker, the equipment burden for the wireless equipment becomes heavy.

[0007] The technology in Patent Document 2 reduces the number of maintenance personnel from two to one while still ensuring the safety of maintenance work. However, there are issues with the need to install special operating means for setting the car height to an appropriate level for maintenance work and for restoring the car height to the normal level after maintenance is complete, and there is also room for improvement in the configuration of the control device.

[0008] The techniques of Patent Documents 3 and 4 facilitate the operation of switching between normal operation mode and maintenance operation mode and involve special operations to prevent erroneous operation by members of the public, but they do not reliably reduce the number of maintenance personnel required.

[0009] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide an elevator maintenance operation control device that does not require a wireless remote control for special operation, is simpler, and can easily ensure safety even if the number of maintenance personnel is reduced. [Means for solving the problem]

[0010] The present invention, which solves the above-mentioned problems, is an elevator maintenance operation control device that controls the drive mechanism so that the stopping height of the car can be set to a height different from that of normal operation for maintenance work, and is equipped with a plurality of hall operation units that are arranged at the landings and call the cars, and a controller having a computer that can control at least the stopping height of the car according to differences in command signals according to the operation of the hall operation units, and when the controller detects that a specific operation has been performed on a specific hall operation unit, it calls the car of the machine to be maintained to the landing, and controls the drive mechanism of the machine to be maintained so that the stopping height is set to a height that allows maintenance personnel to move from the landing to the space above or below, just outside the car. [Effects of the Invention]

[0011] According to the present invention, it is possible to provide an elevator maintenance operation control device that does not require a wireless remote control for special operation, is further simplified, and can easily ensure safety even if the number of maintenance personnel is reduced. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a functional block diagram showing a schematic configuration of an elevator maintenance operation control device (hereinafter also referred to as "the device") according to an embodiment of the present invention. [Figure 2] 2 is a flowchart showing the operation procedure of group management in the device of FIG. 1. [Figure 3] 2 is a flowchart showing an operation procedure in a maintenance mode in the device of FIG. 1. [Figure 4] FIG. 2 is a front cross-sectional view of a building for explaining the operation of the device in FIG. 1 in a maintenance mode based on group management. DETAILED DESCRIPTION OF THE INVENTION

[0013] The following describes an embodiment with reference to the drawings. This device is primarily composed of a control function for normal and maintenance operation of the elevator mechanism and drive function, and various sensors and switches connected to it. The controller at the heart of the device is a computer, and is composed of various functional parts formed by the CPU (Central Processing Unit) executing programs stored in its memory. This computer may also be a one-chip microcomputer.

[0014] Fig. 1 is a functional block diagram showing the schematic configuration of the device 100. The group control elevator controls multiple elevators (cars). As shown in Fig. 1, the main part of the device 100 is composed of a group controller 101 and car controllers 102(1) to 102(2) that function at a lower level.

[0015] The group control elevator, which will be described later using Figure 4, controls each part based on rational calculations of hall-side doors 11D to 43D, the number of which is the number of building floors multiplied by the number of elevators (cars), halls 11F to 43F having hall call buttons (hereinafter also referred to as "hall buttons" or "hall operation units") 1A to 4B corresponding to the hall-side doors 11D to 43D, the call positions for making car calls from the halls 11F to 43F, multiple cars that operate in response to car calls, and the current car positions of these cars.

[0016] The rational calculation here refers to a process suitable for general operation management of a group control elevator. This process controls not only the device 100 but also the normal operation mode so that the car closest to the called floor is moved to that floor, so that the up / down operation is not reversed and wasted except for the top and bottom floors. The maintenance operation mode will be described later using Figures 2 to 4.

[0017] The group controller 101 includes a hall button detection unit 21, a movement command creation unit 22, and an assigned car determination unit 23. The No. 1 car controllers 102(1) to No. N car controllers 102(N) have the same configuration, including a car position detection unit 24, an operation mode determination unit 25, an operation control unit 26, and a motor control unit 27, but each operates independently for each car.

[0018] The operation mode determination unit 25 is connected to a maintenance changeover switch 28, recognizes the actual state of the changeover, and inputs the recognition result to the operation control unit 26. The car position detection unit 24 detects the car position using an encoder 30, and also detects using a door zone sensor 29 whether the door positions and open / closed states on both the car side and the landings 11F to 43F side match, and inputs the detection result to the operation control unit 26.

[0019] The operation control unit 26 outputs the result of rational calculation based on the input of the state signal as described above to the motor control unit 27. The motor control unit 27 provides a drive signal to the inverter 31, and the inverter 31 provides a drive current to the motor 32 to drive it.

[0020] [Group management] Fig. 2 is a flowchart showing the operation procedure of group management in the device 100 of Fig. 1. As shown in Fig. 2, the device 100 periodically repeats the processing of steps 201 to 208 at a frequency of several to several tens of times per second.

[0021] First, in step 201, it is determined whether or not a hole button 1A to 4B has been pressed. If No, the process ends, but if Yes, the process proceeds to step 202. In step 202, it is determined whether or not a hole button 1A to 4B has been pressed for a predetermined time, for example, 3 seconds or more. If No, the process proceeds to step 207, but if Yes, the process proceeds to step 203.

[0022] In step 203, it is determined whether the machine closest to the pressed hall button 1A to 4B is in maintenance mode, and if the answer is No, the process proceeds to step 207, but if the answer is Yes, the process proceeds to step 204. Whether or not the machine is in maintenance mode depends on whether the maintenance personnel have set the control panel in the machine room or the like to perform maintenance on machine No. 1 first, as will be described later in FIG.

[0023] In step 204, it is determined whether there is only one machine in maintenance mode (machine to be maintained) in the group (bank), and if No, proceed to step 207, but if Yes, proceed to step 205. Step 204 checks whether the principle of maintaining one machine per bank is being observed, and if No, the system transitions to an operation to avoid accidents such as falls that can occur in maintenance mode when normal mode is intended.

[0024] In step 205, it is determined whether the car in maintenance mode is on the floor where the hall button 1A to 4B was pressed. If the answer is No, the process proceeds to step 207, but if the answer is Yes, the process proceeds to step 206. In step 206, a movement command is sent to the car in maintenance mode, thereby ending the series of processes. If the answer is No in step 205, the process also proceeds to an operation to prevent accidents such as falls.

[0025] On the other hand, in step 207, it is determined whether or not there is a machine that can be assigned to the normal mode, and if No, the process ends, and if Yes, the process proceeds to step 208. In step 208, an assignment signal is sent to an appropriate machine (normal assignment control), thereby completing the series of processes.

[0026] [Maintenance Mode] Fig. 3 is a flowchart showing the operation procedure of the maintenance mode in the present device 100 of Fig. 1, in other words, showing an elevator maintenance operation control method (hereinafter referred to as "the method") according to an embodiment of the present invention. As shown in Fig. 3, in step 301, it is determined whether or not a movement command has been received. If No, the process ends, and if Yes, the process proceeds to step 302.

[0027] Note that the movement command in Figure 3 is not a command to move the car to a different floor, but a command to appropriately adjust the height of the car relative to the landing on one floor for maintenance work. The optimal car height for maintenance is the height suitable for workers to climb onto the top of the car from near the machine to be maintained at any of the landings on floors 11 to 43, or to crawl into the pit from the lowest floor.

[0028] In step 302, it is determined whether the car is in an area where the doors can be opened. If the answer is No, the process proceeds to step 306, but if the answer is Yes, the process proceeds to step 303. In steps 302 and 306, the car is first stopped in an area where the doors can be opened and where general passengers can get on and off, before being moved to the optimum height for maintenance.

[0029] In step 303, it is determined whether the floor on which the car is stopped is the lowest floor, and if No, the process proceeds to step 305, but if Yes, the process proceeds to step 304. In step 304, the car is raised to a height that leaves a gap that allows an operator to enter a pit (not shown), thereby completing the series of processes.

[0030] In step 305, the elevator car is lowered to a position where the worker can easily get on the elevator car, thereby completing the series of processes. In step 306, the elevator car is moved to an area where the door can be opened, thereby completing the series of processes.

[0031] Furthermore, if the maintenance personnel needs to move the machine requiring maintenance to a different floor, they can press and hold the call button (hall button) near the car again, and by following the procedure of steps 301, 302, and 306, the height of the car dedicated to maintenance can be moved to the area where the door can be opened.

[0032] This allows maintenance personnel to board the car from the platform and act as the operator, just like regular passengers. The operator can operate normal movement and special movement as appropriate using the operation buttons inside the car.

[0033] Fig. 4 is a front cross-sectional view of a building for explaining the operation (present method) of the maintenance mode by group control in the present device 100 of Fig. 1. The four-story building shown in Fig. 4 is equipped with group control elevators No. 1 to No. 3.

[0034] [Group management configuration] At the elevator landings 11F to 43F on each floor, two sets of hall buttons 1A, 1B (1st floor) to 4A, 4B (4th floor) are provided on the first floor, one between each of the three equally spaced landing doors 11D to 43D.

[0035] In other words, in addition to hall buttons 1A and 1B (1st floor), hall buttons 2A and 2B (2nd floor), hall buttons 3A and 3B (3rd floor), and hall buttons 4A and 4B (4th floor) are provided, with two per floor x 4 floors = a total of eight sets, which contribute to group management.

[0036] However, only upward arrow buttons 1A and 1B are provided between the lowest floor platforms 11F to 13F, and only downward arrow buttons 4A and 4B are provided between the highest floor platforms 41F to 43F.

[0037] Additionally, pairs of up and down arrow buttons 2A to 3B are provided between the mid-level platforms 21F to 33F. At the mid-level platforms 21F to 33F, a user presses either the up or down arrow button to select whether to ascend or descend, and communicates this intention to the hall button detection unit 21 of the group controller 101 shown in Figure 1.

[0038] The group controller 101 is equipped with an operation management program that can respond rationally even when multiple users with conflicting intentions press both the up and down arrow buttons simultaneously or sequentially at one of the mid-level boarding areas 21F to 33F.

[0039] [Maintenance work on conventional equipment] In conventional systems, when performing maintenance work on the upper part of the car, the maintenance personnel first operates the operation mode selector switch on the elevator control panel installed in the machine room to set it to maintenance operation mode. This setting operation is also performed in the present system 100.

[0040] Next, in the conventional device, one of the two maintenance personnel acts as the operator, gets inside the car, operates it, moves it to the required floor (e.g., a work floor), and sets it to a special height different from that of normal use.

[0041] In this case, the car is set at a special height, and the door zones for the car-side door and the hall-side door do not match, making it impossible for people to pass inside or outside the car. Therefore, the other maintenance personnel waiting at one of the halls on floor 11 becomes the worker and gets on top of the car to begin work. In this case, with conventional equipment, one of the two maintenance personnel could not play the dual role of operator and worker.

[0042] Also, when inspecting the pit, one maintenance personnel first becomes the operator and, in normal operation mode, operates hall buttons 1A to 4B from the floor where he or she is currently located to call the car and move to the lowest floor, platform 11F.

[0043] Next, the operator uses a special operation to stop the car that has arrived there from platform 11F at a position slightly higher than normal, preventing general passengers from boarding the car and creating a gap large enough to allow entry into the pit from platform 11F. At this time, the other maintenance worker waiting at platform 11F becomes the worker, enters the pit, and begins work.

[0044] Here, with the conventional system, if there was only one maintenance worker, even though passage was somewhat difficult due to mismatched door zones, it would not be impossible for one person to perform two tasks by exiting the car to the 11th floor platform, sneaking into the pit through the gap between the car floor and the floor, and engaging in maintenance work inside the pit.Even so, with the conventional system, a complicated operating procedure was required before maintenance work could begin.

[0045] [Maintenance work on this device] This device 100 eliminates the need for a wireless remote control for special operation, simplifies the setting of the cage height suitable for maintenance work, and makes it easy to ensure safety even with a reduced number of maintenance personnel.

[0046] Furthermore, this device 100 aims to enable maintenance to be performed in parallel with normal use, and also makes it easy to select between normal and maintenance modes and switch between them. To prevent erroneous operation by the public, this switching operation is a special operation known only to the building manager and maintenance workers, and not to users.

[0047] The characteristic functions of the device 100 are as follows: When a maintenance person presses and holds the hall button 1A (step 202 in FIG. 2: YES), a movement command is sent (step 206) to the first machine that is close to the pressed hall button 1A (step 205: YES). In other words, the device 100 recognizes that the first machine that the maintenance person wants to put into maintenance mode is located on the floor where the hall button 1A was pressed. Note that the first machine may switch from normal operation to maintenance operation mode.

[0048] Furthermore, even if any of hall buttons 2A, 3A, and 4A is pressed and held (step 202 in FIG. 2: YES), the device 100 recognizes that the first elevator is not nearby on the floor where the hall button was pressed and held (step 205: NO). As a result, the device 100 transmits an allocation signal (step 208) to the second or third elevator (step 207) to operate normally.

[0049] Conversely, if machine No. 3 is designated as the machine to be maintained, when any of hall buttons 1B, 2B, 3B, or 4B is pressed and held, the device 100 will recognize that machine No. 1, which is not close to the pressed hall button 1B to 4B, is not in maintenance mode (step 203: NO in Figure 2).

[0050] As a result, the device 100 transmits an allocation signal to either machine No. 1 or No. 2 to cause it to operate normally. In this way, the device 100 recognizes which machine is designated as the machine to be maintained, which of hall buttons 1A to 4B is being pressed and held, and whether the machine to be maintained is stopped near the hall button that is pressed and held, and then appropriately determines whether the relevant machine should be placed in maintenance mode or normal mode, and behaves accordingly.

[0051] When designating machine No. 2 as the machine to be maintained, maintenance personnel should be informed of which instruction should be given priority: hall buttons 1A to 4A, which are equally close to machine No. 2, or hall buttons 1B to 4B, according to the provisions of the service manual, etc.

[0052] Furthermore, similar rules and regulations can be used to determine whether hall buttons 1A to 4A should be used to prioritize between No. 1 and No. 2. Similarly, hall buttons 1B to 4B should be used to determine whether hall buttons 2 and No. 3 should be used to prioritize between No. 2 and No. 3. These can be distinguished by changing the length of time they are pressed. Note that the hall operation units 1A to 4A can be applied to the device 100 by using sensors that react to touches by a human finger or similar actions, in addition to the hall button press method, as long as they can determine whether the operation time is longer than normal.

[0053] The configuration, operation, and effects of the device 100 will be explained more clearly below. [1] The device 100 shown in Fig. 1 includes a plurality of hall operating units (hall buttons) 1A-4B arranged at halls 11F-43F to call cars, and a controller having a computer capable of controlling at least the car's stopping height by different command signals according to the operation of the hall operating units 1A-4B. The controller controls the motor 32 and other drive mechanisms so that the car's stopping height can be set to a maintenance mode height different from that for normal operation for maintenance work. This stopping height is a height that allows maintenance personnel to move from halls 11F-43F shown in Fig. 4 to the space above or below the car's exterior.

[0054] For example, the stopping height at which maintenance personnel can move from platforms 11F to 43F into the space above the exterior of the car is the height at which the car roof is close to the floor of each of platforms 11F to 33F. Also, if the car floor is stopped at a height that is somewhat higher than the floors of platforms 11F to 13F, maintenance personnel can enter the space below the exterior of the car, i.e., the pit, from platforms 11F to 13F.

[0055] The maintenance-only button located inside the car is normally locked to prevent general users from operating it, and is unlocked and operated by a single operator only during maintenance. With conventional equipment, a worker other than the operator would either climb onto the top of the car near the machine to be maintained (maintenance unit) on one of the platforms 11F to 43F, or crawl into the pit from the lowest floor. This meant that the number of maintenance personnel was at least two.

[0056] Even if the operator were to double as a worker to save labor, it would be difficult for passengers to escape from the car stopped at the irregular maintenance height to the landings 11F to 43F. In particular, if the car is stopped at an intermediate height between the upper and lower landings 11F to 13F and 41F to 43F, the car door would be blocked by the inner wall of the elevator shaft.

[0057] Therefore, in this device 100, when the controller detects a specific operation on a specific hall operation unit, it calls the car of the machine to be maintained to the hall and adjusts the stopping height to a height that allows maintenance personnel to move from the hall to the space above or below the outside of the car. In other words, by having one worker perform a specific operation (long press) on one of the hall operation units 1A-4B on halls 11F-43F, only one machine set to maintenance mode can arrive at the maintenance height position on the called floor. Then, the operator can become a worker by climbing onto the car from one of halls 11F-43F or by crawling into the pit from the lowest floor.

[0058] In other words, with conventional devices, if there is only one maintenance person, it would be difficult for him to get out of the car that is stopped at an unusual height, but this problem is resolved with the present device 100. With the present device 100, even a single maintenance person can serve as both the operator and the worker, so the burden can be reduced to the point where one person is sufficient for the job that would normally require two people with conventional devices.

[0059] Furthermore, the device 100 simplifies and facilitates mode selection and switching between the normal operation mode and the maintenance operation mode. That is, the device 100 simplifies the system by eliminating the need for a wireless remote control for special operations, and safety can be easily ensured even when one person is performing maintenance work.

[0060] [2] In the above [1], the specified hall operation unit may be, for example, hall operation unit 1A, which is closest to the maintenance target machine No. 1, among the multiple units, and the specific operation may be, for example, a long press for 3 seconds or more. [3] In the above [1], it is more preferable that the controller enables maintenance operations by a specific operation. This specific operation is a special operation in which one of the hall operation units (hall buttons) 1A to 4B at halls 11F to 43F is operated (long-pressed) for a predetermined time or more. This special operation is not known to general users, but is known only to building managers and maintenance workers for maintenance operations, so that erroneous operation by the public can be prevented.

[0061] [4] In the above [1], the maintenance target of the device 100 is an elevator that has multiple cars and is managed in groups, and it is preferable that the control configuration is such that when a hall button, for example, 1A, that is closest to the elevator to be maintained is pressed and held for a predetermined time, for example, 3 seconds or more, only elevator No. 1 as the elevator to be maintained is called to the relevant hall 11F.

[0062] According to this, when the hall operation unit (hall button) 1A is pressed, only the nearby No. 1 elevator is designated as the elevator to be maintained and is called to hall 11F. Meanwhile, No. 3 elevator, which is far from the hall button 1A, and No. 2 elevator, which was not selected as the elevator to be maintained, can operate normally. Therefore, this device 100 reduces restrictions on elevator use by users and enables maintenance to be carried out in parallel with normal use.

[0063] [5] In the above [1], it is preferable that the stopping height of the device 100 is a preset height, and that the device is controlled and configured to move the called car slowly toward the preset height.

[0064] Such a device 100 is convenient for maintenance work and can clearly indicate to general users that maintenance is underway, thereby preventing general users from accidentally boarding the car.

[0065] [6] In the above [5], when the car of the called maintenance target machine is held at a preset height, if the hall button closest to the maintenance target machine is pressed again as a specific operation, for example, for more than 3 seconds, this device 100 will return the car of the maintenance target machine to its normal height.

[0066] In this way, the device 100 can easily switch between normal and maintenance modes by performing a special operation of pressing and holding one of the hall operation units (hall buttons) 1A to 4B at halls 11F to 43F, so that maintenance work for different processes performed on different floors can be quickly performed.

[0067] For example, after completing work on the car on the top floor, if the worker needs to perform pit work on the bottom floor, he or she can go to the boarding area and perform a specific operation by pressing the hall button again for more than three seconds, which will return the car to normal mode, allowing the worker to ride in the car and move around just like a regular passenger. [Explanation of symbols]

[0068] 1A to 4B hall buttons (landing operation unit), 11D to 43D hall side doors, 11F to 43F halls, 21 hall button detection unit, 22 movement command creation unit, 23 assigned car number determination unit, 24 car position detection unit, 25 operation mode determination unit, 26 operation control unit, 27 motor control unit, 28 maintenance changeover switch, 29 door zone sensor, 30 encoder, 31 inverter, 32 motor, 100 elevator maintenance operation control device (this device), 101 group controller, 102 (1 to N) (1 to N car) controller

Claims

1. An elevator maintenance operation control device that controls a drive mechanism so that the stopping height of a car can be set to a height different from that of normal operation for maintenance work, a plurality of hall operation units disposed at the halls and configured to call the cars; a controller having a computer capable of controlling at least the stopping height of the car according to a difference in a command signal corresponding to an operation of the hall operating unit; an operation mode changeover switch for setting the operation mode to a maintenance operation mode; Equipped with The controller When the operation mode is the maintenance operation mode, if it is detected that a specific operation has been performed on a predetermined hall operation unit, the car of a machine that is a preset maintenance target is called to the hall, In the case of an elevator that has a plurality of cars and is managed in groups, if the machine to be maintained is at the same floor as the hall where a predetermined hall operation unit is operated and a specific operation is performed on a hall operation unit close to the machine to be maintained, the stopping height of the car of the machine to be maintained is set to a height that allows a maintenance person to move from the hall to the space above or below the outside of the car immediately adjacent to the car, and if the machine to be maintained is not stopped at the same floor as the hall where a predetermined hall operation unit is operated or a specific operation is performed on a hall operation unit other than the hall operation unit close to the machine to be maintained, cars other than the machine to be maintained are called in normal operation. Control it so that Elevator maintenance operation control device.

2. The specific operation is a long press. The elevator maintenance operation control device according to claim 1.

3. The controller The specific operation enables a maintenance operation; The elevator maintenance operation control device according to claim 1.

4. The stopping height is a preset height, moving the called car at a low speed toward the preset height; The elevator maintenance operation control device according to claim 1.

5. With the cage of the called maintenance target aircraft held at the preset height, When the landing operation unit near the maintenance target aircraft is specifically operated again, the height of the car of the maintenance target aircraft is returned to a normal height. The elevator maintenance operation control device according to claim 4.

6. An elevator maintenance operation control method for controlling a drive mechanism so that a stopping height of a car can be set to a height different from that of normal operation for maintenance work, comprising: The controller having a computer At least the stopping height of the car can be controlled by a difference in a command signal according to an operation of a hall operating unit that is arranged at the hall and calls the car, When the operation mode is the maintenance operation mode, if it is detected that a specific operation has been performed on a predetermined hall operation unit among a plurality of hall operation units, the car of a machine that is a preset maintenance target is called to the corresponding hall, In the case of an elevator that has a plurality of cars and is managed in groups, if the machine to be maintained is at the same floor as the hall where a predetermined hall operation unit is operated and a specific operation is performed on a hall operation unit close to the machine to be maintained, the stopping height of the car of the machine to be maintained is set to a height that allows a maintenance person to move from the hall to the space above or below the outside of the car immediately adjacent to the car, and if the machine to be maintained is not stopped at the same floor as the hall where a predetermined hall operation unit is operated or a specific operation is performed on a hall operation unit other than the hall operation unit close to the machine to be maintained, cars other than the machine to be maintained are called in normal operation. Control it so that Elevator maintenance operation control method.

7. The specific operation is a long press. The elevator maintenance operation control method according to claim 6.

8. The controller The specific operation enables a maintenance operation. The elevator maintenance operation control method according to claim 6.

9. The stopping height is a preset height, moving the called car at a low speed toward the preset height; The elevator maintenance operation control method according to claim 6.

10. With the cage of the called maintenance target aircraft held at the preset height, When the landing operation unit near the maintenance target aircraft is specifically operated again, the height of the car of the maintenance target aircraft is returned to a normal height. The elevator maintenance operation control method according to claim 9.

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