阅读说明：本技术 电梯维护系统 (Elevator maintenance system ) 是由 松熊利治 前原知明 山下幸一 齐藤勇来 鸟谷部训 羽鸟贵大 杨松 棚林飒 于 2019-04-19 设计创作，主要内容包括：本发明提供一种电梯维护系统,在可同时使用固定于轿厢上的固定式遥控器和维护人员可携带的携带式遥控器的情况下,能够根据状况来确定优先的遥控器,实现更安全且适当的维护检查作业。为此,本发明的电梯维护系统具有固定在轿厢的固定式遥控器、可携带的携带式遥控器和响应所述固定式遥控器或所述携带式遥控器的操作来控制所述轿厢的升降的控制装置,所述控制装置通过以下模式中的任一模式来控制所述轿厢的升降,即：固定式遥控器模式,将与所述携带式遥控器的通信线路断开,使与所述固定式遥控器的通信线路成为有效；携带式遥控器模式,将与所述固定式遥控器的通信线路断开,使与所述携带式遥控器的通信线路成为有效。(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.)

1. An elevator maintenance system capable of raising and lowering a car in maintenance inspection work, comprising:

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,

the control device controls the lift 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, further comprising:

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,

the 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.

3. 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.

4. The elevator maintenance system of claim 3, 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.

5. The elevator maintenance system of any of claims 1-4, wherein:

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.

6. An elevator maintenance method for lifting a car in response to an operation of a fixed type remote controller or a portable type remote controller, characterized in that:

controlling the raising and lowering of the car by any one of the following steps:

disconnecting the communication line with the portable remote controller to enable the communication line with the fixed remote controller fixed on the car; and

disconnecting the communication line with the fixed remote controller to enable the communication line with the portable remote controller.

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 obligated to perform a regular maintenance check in order to maintain 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 (for example, 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 and 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 and lowers the car using a portable remote controller, there is a risk that unexpected lifting and lowering of the car occurs by the maintenance person on the car.

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 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.

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 with 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 3 a.

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 has 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 by using the fixed remote controller 8 is maintained. On the other hand, if 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 is being performed with the stationary remote controller 8. If wireless communication with the stationary remote controller 8 is being performed, step S2 is repeatedly executed 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 has 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, by 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 regular maintenance person to operate the car 3 using the portable remote controller 9, and prevent intrusion of a third person who has illegally acquired the portable remote controller 9 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. The process proceeds to step S6 when wireless communication is not possible, and proceeds to step S8 when wireless communication is possible. 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 can prevent 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 worker who is present in a place other than on the car 3 (for example, a maintenance worker who is present in the 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 the battery consumption of the portable remote controller 9, the wireless communication line may be connected only at the moment 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 elevator has been described above, the present invention can be applied to an elevator having a tail cable as long as the elevator uses a fixed-type remote controller and a portable-type remote controller at the same time.

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 passage

7 layer station

8 fixed remote controller

9 Portable remote controller

10 Elevator maintenance system