CN113692389B - Elevator maintenance system - Google Patents
Elevator maintenance system Download PDFInfo
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- CN113692389B CN113692389B CN201980095392.5A CN201980095392A CN113692389B CN 113692389 B CN113692389 B CN 113692389B CN 201980095392 A CN201980095392 A CN 201980095392A CN 113692389 B CN113692389 B CN 113692389B
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- remote controller
- fixed
- control device
- car
- portable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
Abstract
The invention provides an elevator maintenance system, which can determine a priority remote controller according to the situation under the condition that a fixed remote controller fixed on a car and a portable remote controller carried by a maintenance person can be used at the same time, thereby realizing safer and more appropriate maintenance inspection operation. To this end, an elevator maintenance system according to the present invention includes a fixed remote controller fixed to a car, a portable remote controller that is portable, and a control device that controls the up-and-down movement of the car in response to an operation of the fixed remote controller or the portable remote controller, wherein the control device controls the up-and-down movement of the car in any one of the following modes: a fixed remote controller mode for disconnecting the communication line with the portable remote controller and enabling the communication line with the fixed remote controller; and a portable remote controller mode for disconnecting the communication line with the fixed remote controller and enabling the communication line with the portable remote controller.
Description
Technical Field
The present invention relates to an elevator maintenance system that performs maintenance inspection using a wireless remote controller.
Background
In an elevator, it is obligatory to perform a regular maintenance check in order to maintain a safe operation. When performing maintenance inspection work of an elevator, it is necessary to first switch the operation mode of the elevator from the normal mode to an inspection mode in which a car call from a landing is no longer received. When the operation mode of the elevator is set to the inspection mode, the car can be moved up and down at an extremely low speed (e.g., about 0.2 m/s) suitable for safe operation.
As a conventional elevator maintenance system using a wireless portable remote controller for an operation of raising and lowering a car during an inspection operation, there is known an elevator maintenance system described in patent document 1.
In the abstract of the specification of the document, "when an inspector enters an inspection area such as above a car, a pit, or the periphery of a hoisting machine, the operation mode of an elevator can be automatically switched to the inspection mode without any operation by the inspector. "means for solving this problem" describes: "make the operating personnel carry and have the portable remote controller device 22 that sends the wireless communication function used for discerning whether to check the operating personnel's identification signal and can carry on the operation of the lift, dispose the aerial 24, 25, 26 that can receive the identification signal sent from the portable remote controller device 22 in a plurality of predetermined inspection areas that are presumed in advance of the lift, make the operation mode of the lift switch over to the inspection operation mode automatically when the aerial 24, 25, 26 receives the identification signal, and, set up the interlocking unit in a manner of permitting the inspection operation of the lift only when the operation of the portable remote controller device 22 satisfies the condition presumed in advance afterwards".
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open No. 2012-41155.
Disclosure of Invention
Problems to be solved by the invention
However, although patent document 1 discloses a maintenance inspection work using a portable remote control device (portable remote controller), it is not assumed that a fixed remote controller fixed to the car is used at the same time, and it is unclear how the inputs from the two remote controllers are reflected in the operation of the car.
Therefore, for example, when a maintenance person on the car performs a maintenance inspection operation using a fixed remote controller or when a maintenance person at a landing lifts the car using a portable remote controller, there is a risk that lifting of the car unintended by the maintenance person on the car occurs.
Accordingly, an object of the present invention is to provide an elevator maintenance system capable of switching an effective remote controller according to a situation and realizing a safer and more appropriate maintenance and inspection work when a fixed remote controller and a portable remote controller can be used at the same time.
Means for solving the problems
In order to solve the above problem, an elevator maintenance system according to the present invention is an elevator maintenance system for raising and lowering a car in a maintenance inspection operation, including: a fixed remote controller fixed on the lift car; a portable remote controller; and a control device for controlling the lift of the car in response to the operation of the fixed remote controller or the portable remote controller, wherein the control device controls the lift of the car in any one of the following modes: a fixed remote controller mode for disconnecting the communication line with the portable remote controller and enabling the communication line with the fixed remote controller; and a portable remote controller mode for disconnecting the communication line with the fixed remote controller and enabling the communication line with the portable remote controller.
Effects of the invention
According to the elevator maintenance system of the present invention, in the case where a fixed remote controller and a portable remote controller can be used at the same time, an effective remote controller can be switched according to the situation, and a safer and more appropriate maintenance and inspection work can be realized.
Drawings
Fig. 1 is a diagram showing a state in which a maintenance worker on a car performs maintenance inspection using a fixed remote controller.
Fig. 2 is a diagram showing a state in which a maintenance worker on a car performs maintenance inspection using a portable remote controller.
Fig. 3 is a diagram showing a state in which a maintenance worker at a landing performs maintenance inspection using a fixed remote controller.
Fig. 4 is a flowchart showing an example of a method for determining a valid remote controller.
Detailed Description
An elevator maintenance system 10 according to an embodiment of the present invention will be described below with reference to fig. 1 to 4.
Fig. 1 is a schematic view showing a state in which a maintenance worker performs a maintenance inspection operation using a fixed remote controller fixed to the ceiling surface of a car. In the figure, 1 is a control device, 2 is a hoisting machine, 3 is a car, 4 is a counterweight, 5 is a main rope, 6 is an elevator shaft, 7 is a landing, and 8 is a fixed remote controller.
As shown here, in the elevator of the present embodiment, the control device 1 and the hoisting machine 2 are provided in the machine room above the elevator shaft 6, and the car 3 and the counterweight 4 are connected to both ends of the main rope 5. According to this configuration, the control device 1 can move the car 3 to a desired landing 7 by rotationally driving the hoisting machine 2 and winding up the main rope 5 by a desired amount. The control device 1 is actually a computer having an arithmetic device such as a CPU, a main storage device such as a semiconductor memory, an auxiliary storage device such as a hard disk, and hardware such as a communication device. The functions described below are realized by the arithmetic device executing a program loaded in the main storage device, and a description of a known technique in the field of such a computer will be appropriately omitted.
The elevator of fig. 1 is a so-called tailless elevator without a tail cable connecting the control device 1 to the car 3. Therefore, in order to enable wireless communication between the control device 1 and the car 3, the control device 1 side includes a wireless communicator 1a, and the car 3 side includes a wireless communicator 3a.
In such an elevator, when a maintenance worker operates the fixed remote controller 8 fixed to the car 3 during maintenance and inspection work, the operation contents (an ascending command, a descending command, and the like) are transmitted to the control device 1 via wireless communication between the wireless communicator 3a and the wireless communicator 1a, so that the control device 1 can drive the hoisting machine 2 to rotate in response to the operation of the fixed remote controller 8 and can ascend and descend the car 3 at an extremely low speed.
Here, generally, the car 3 of the ropeless elevator is provided with a battery 3b for supplying power to the wireless communicator 3a, but when the battery 3b is exhausted and wireless communication is no longer available, there is a risk that a command from the fixed remote controller 8 cannot reach the control device 1 and a maintenance person on the car 3 becomes unable to escape from the hoistway 6 (a trapped state). This problem also occurs when the wireless communicator 3a on the car 3 side fails.
Therefore, in the elevator maintenance system 10 of the present embodiment, as exemplified in fig. 2 and 3, the fixed remote controller 8 and the portable remote controller 9 can be used at the same time, whereby even when the battery 3b is exhausted during the maintenance inspection work or the wireless communicator 3a is out of order, the portable remote controller 9 can directly transmit a command to the control device 1, and the above-described trapped state can be eliminated.
However, in the case of the dual control in which the fixed remote controller 8 and the portable remote controller 9 are always used at the same time, the maintenance person at the landing 7 may move up and down against the will of the maintenance person on the car 3 by operating the portable remote controller 9, which is not preferable in terms of safety. Therefore, in the present embodiment, only one of the fixed remote controller 8 and the portable remote controller 9 is enabled, and the maintenance and inspection work can be safely performed.
Fig. 4 is a flowchart illustrating a method of switching an active remote controller in the elevator maintenance system 10 of the present embodiment. The details of the flowchart will be described later, and the outline thereof is that a mode is set to receive only the command from the fixed remote controller 8 in a normal state, but when it is detected that the portable remote controller 9 is powered on, if the fixed remote controller 8 is not in use, the active remote controller is switched from the fixed remote controller 8 to the portable remote controller 9, and when the maintenance check work using the portable remote controller 9 is finished, the mode is returned to the mode to receive only the command from the fixed remote controller 8. The steps of the flowchart of fig. 4 will be described in detail below.
In step S1, the control device 1 determines whether or not it is detected that the portable remote controller 9 is powered on. If the power-on of the portable remote controller 9 is not detected, step S1 is repeatedly executed, and the "fixed remote controller mode" in which the car 3 is operated using the fixed remote controller 8 is maintained. On the other hand, when power-on is detected, the process proceeds to step S2.
If a maintenance person is present on the car 3, if another maintenance person at the landing 7 or the like lifts or lowers the car 3 using the portable remote controller 9, the maintenance person on the car 3 unexpectedly lifts or lowers, which is problematic in terms of safety. Therefore, when the fixed remote controller 8 is being operated and it is determined that a maintenance worker is on the car 3, it is necessary to maintain the "fixed remote controller mode" without receiving a command from the portable remote controller 9.
Then, in step S2, the control device 1 determines whether or not wireless communication with the stationary remote controller 8 is being performed. If wireless communication with the stationary remote controller 8 is being performed, step S2 is repeatedly performed to maintain the stationary remote controller mode. On the other hand, if wireless communication with the stationary remote controller 8 is not being performed, the process proceeds to step S3. Whether or not wireless communication is being performed with the stationary remote controller 8 can be determined based on whether or not an instruction from the stationary remote controller 8 is received within a predetermined period (for example, within 10 minutes).
In step S3, the control device 1 determines whether the authentication of the portable remote controller 9 is passed. If the authentication is not passed, step S3 is repeatedly executed to maintain the fixed remote controller maintenance mode. On the other hand, if the authentication is passed, the process proceeds to step S4. The authentication of the portable remote control 9 can be determined, for example, based on whether or not a predetermined password is input. Here, the authentication of the portable remote controller 9 is performed in order to allow only a normal maintenance person to operate the car 3 using the portable remote controller 9, and prevent a third person who has illegally acquired the portable remote controller 9 from intruding into the elevator maintenance system 10.
In step S4, the control device 1 switches the mode from the fixed remote controller mode to the portable remote controller mode. Specifically, the maintenance mode is set to receive only the command from the portable remote controller 9 by disconnecting the wireless communication line with the fixed remote controller 8 and enabling the wireless communication line with the portable remote controller 9.
In step S5, the control device 1 determines whether or not wireless communication with the portable remote controller 9 is possible. If the wireless communication is not possible, the process proceeds to step S6, and if the wireless communication is possible, the process proceeds to step S8. Here, the reason why it is determined whether or not wireless communication is possible is that wireless communication is unstable as compared with wired communication, and therefore, input from the portable remote control 9 can be received only during a period in which wireless communication is stable.
In step S6, the control device 1 switches the mode to a stop mode in which the raising and lowering of the car 3 is prohibited. This prevents abnormal operation of the car 3 due to the influence of noise or the like.
In step S7, the control device 1 determines whether or not wireless communication with the portable remote controller 9 is possible. If the wireless communication is not possible due to a communication failure or the like, the process returns to step S7, and if the wireless communication is possible, the process proceeds to step S8.
In step S8, the control device 1 controls the up-and-down movement of the car 3 in response to the operation of the portable remote controller 9. Thus, even when the wireless communicator 3a is out of order or the battery 3b is exhausted, the maintenance person on the car 3 can operate the elevator car 3 to ascend or descend using the portable remote controller 9. In addition, even when the maintenance worker is not on the car 3 but at the landing 7, the portable remote controller 9 can be used to operate the raising and lowering of the car 3.
In step S9, the control device 1 determines whether or not the maintenance operation using the portable remote controller 9 has ended. If the termination is completed, the process proceeds to step S10, and if the termination is not completed, the process returns to step S5. Whether or not the maintenance operation using the portable remote controller 9 is completed can be determined, for example, by whether or not the power-off of the portable remote controller 9 is detected, or whether or not a work completion button of the portable remote controller 9 is pressed.
In step S10, it is determined whether or not wireless communication with the fixed remote controller 8 is possible. If wireless communication is possible, the process proceeds to step S11, and if wireless communication is not possible due to a communication failure or the like, the process proceeds to step S12.
In step S11, the control device 1 switches the mode from the portable remote controller mode to the stationary remote controller mode. Specifically, the maintenance mode is set to receive only the command from the fixed remote controller 8 by disconnecting the wireless communication line with the portable remote controller 9 and enabling the wireless communication line with the fixed remote controller 8. Accordingly, the initial state in which the car 3 is lifted and lowered by the fixed remote controller 8 is set again.
In step S12, the control device 1 switches the mode to a stop mode in which the raising and lowering of the car 3 is prohibited. This can prevent abnormal operation of the car 3 due to the influence of noise or the like.
In the elevator maintenance system 10 of the present embodiment, even a maintenance person who is in a place other than above the car 3 (for example, a maintenance person who is in a landing 7 as shown in fig. 3) can operate the car 3 by establishing wireless communication between the portable remote controller 9 and the control device 1. Therefore, even when the wireless communicator 3a is out of order or the battery 3b is exhausted and the maintenance person on the car 3 is trapped in the elevator shaft 6, another maintenance person can operate the portable remote controller 9 from the landing 7 without moving to the control device 1 of the machine room, thereby moving the car 3 up and down to a desired position and disengaging the maintenance person on the car 3 from the elevator shaft 6, and the rescue time of the trapped maintenance person can be shortened.
As the portable remote controller 9 of the present embodiment, a dedicated terminal may be used, or a general-purpose terminal such as a smartphone may be used. In the portable remote controller mode, it is preferable that the wireless communication line between the control device 1 and the portable remote controller 9 is always connected, but in order to suppress battery consumption of the portable remote controller 9, the wireless communication line may be connected only at the instant when the up button or the down button of the portable remote controller 9 is pressed, and the control device 1 may raise and lower the car 3 at a low speed by a predetermined distance (for example, about 1.5 m) every time the up button or the down button is pressed. This makes it possible to perform the required elevating operation of the car 3 while suppressing the power consumption of the portable remote controller 9.
As described above, according to the elevator maintenance system of the present embodiment, when the fixed remote controller and the portable remote controller can be used at the same time, the effective remote controller can be switched according to the situation, and a safer and more appropriate maintenance and inspection work can be realized.
In addition, although the embodiment in which the elevator maintenance system of the present invention is applied to the tailless-cable-equipped elevator has been described above, the present invention can be applied to an elevator provided with a tail cable as long as the elevator uses both a fixed-type remote controller and a portable-type remote controller.
Description of the symbols
1 control device
1a wireless communicator
2 traction machine
3 Car
3a wireless communicator
3b battery
4 counterweight
5 Main sling
6 lifting path
7 layer station
8 fixed remote controller
9 Portable remote controller
10 Elevator maintenance system
Claims (4)
1. An elevator maintenance system capable of raising and lowering a car in maintenance inspection work, comprising:
a fixed remote controller fixed on the cage;
a portable remote controller;
a control device for controlling the lift of the car in response to the operation of the fixed remote controller or the portable remote controller;
a control device side wireless communicator connected to the control device; and
a car-side wireless communicator provided in the car,
a command transmitted from the fixed remote controller to the control device is wirelessly transmitted to the control device via the car-side wireless communicator and the control device-side wireless communicator,
a command transmitted from the portable remote controller to the control device is wirelessly transmitted to the control device via the control device side wireless communicator,
the control device controls the lifting of the cage through any one of a fixed remote controller mode and a portable remote controller mode,
in the fixed remote controller mode, the communication line with the portable remote controller is disconnected to enable the communication line with the fixed remote controller,
in the portable remote controller mode, the communication line with the fixed remote controller is disconnected, and the communication line with the portable remote controller is enabled.
2. The elevator maintenance system of claim 1, wherein:
the control device switches from the fixed remote controller mode to the portable remote controller mode when the fixed remote controller is not communicating with the control device and is able to communicate with the portable remote controller.
3. The elevator maintenance system of claim 1, wherein:
the control device switches from the portable remote controller mode to the stationary remote controller mode when the operation of the portable remote controller is completed in the portable remote controller mode.
4. An elevator maintenance system according to any one of claims 1-3, characterized in that:
the control device shifts to a stop mode in which the car is prohibited from moving up and down when communication with the fixed remote controller is not possible in the fixed remote controller mode or when communication with the portable remote controller is not possible in the portable remote controller mode.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2019/016743 WO2020213148A1 (en) | 2019-04-19 | 2019-04-19 | Elevator maintenance system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113692389A CN113692389A (en) | 2021-11-23 |
| CN113692389B true CN113692389B (en) | 2023-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980095392.5A Active CN113692389B (en) | 2019-04-19 | 2019-04-19 | Elevator maintenance system |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7179975B2 (en) |
| CN (1) | CN113692389B (en) |
| WO (1) | WO2020213148A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113003344A (en) * | 2021-03-05 | 2021-06-22 | 华升富士达电梯有限公司 | Bluetooth-based elevator safety control method and equipment |
| CN117597299A (en) * | 2021-06-02 | 2024-02-23 | 通力股份公司 | Maintenance of conveyor systems |
| WO2023164557A2 (en) * | 2022-02-24 | 2023-08-31 | Wurtec, Incorporated | Elevator inspection operation signaling sytem |
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| JP6367433B1 (en) * | 2017-06-19 | 2018-08-01 | 東芝エレベータ株式会社 | Elevator inspection operation system |
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| JPS59103571A (en) * | 1982-12-02 | 1984-06-15 | Nakamichi Corp | Switching regulator circuit |
| JP2003252544A (en) | 2002-03-06 | 2003-09-10 | Hitachi Building Systems Co Ltd | System for maintenance service operation of elevator |
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| JP5605833B2 (en) | 2010-08-20 | 2014-10-15 | 東芝エレベータ株式会社 | Elevator control device |
| US10787341B2 (en) | 2015-07-01 | 2020-09-29 | Otis Elevator Company | Elevator control system and elevator system having inspection control station |
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2019
- 2019-04-19 JP JP2021514764A patent/JP7179975B2/en active Active
- 2019-04-19 CN CN201980095392.5A patent/CN113692389B/en active Active
- 2019-04-19 WO PCT/JP2019/016743 patent/WO2020213148A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005178949A (en) * | 2003-12-17 | 2005-07-07 | Hitachi Building Systems Co Ltd | Operating device for elevator maintenance |
| JP2006117375A (en) * | 2004-10-21 | 2006-05-11 | Toshiba Elevator Co Ltd | Elevator operation device |
| JP2006199404A (en) * | 2005-01-19 | 2006-08-03 | Mitsubishi Electric Corp | Terminal safety device for elevator |
| CN102040130A (en) * | 2009-10-22 | 2011-05-04 | 东芝电梯株式会社 | Elevator maintenance inspection device |
| CN109311626A (en) * | 2016-06-15 | 2019-02-05 | 三菱电机株式会社 | The safety control and method of controlling security of elevator with multiple compartments |
| CN108569603A (en) * | 2017-03-07 | 2018-09-25 | 株式会社日立大厦系统 | Elevator check device, elevator inspection system, its manufacturing method and terminal installation |
| JP6367433B1 (en) * | 2017-06-19 | 2018-08-01 | 東芝エレベータ株式会社 | Elevator inspection operation system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113692389A (en) | 2021-11-23 |
| JPWO2020213148A1 (en) | 2020-10-22 |
| JP7179975B2 (en) | 2022-11-29 |
| WO2020213148A1 (en) | 2020-10-22 |
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