Elevator renewal process

Abstract

An elevator refurbishment design method comprising: subdividing a refurbishment process at the time of refurbishment of at least one device in an elevator into a series of subdivided design work steps, each defined as a unit such that the elevator is brought into a normally operational state upon completion of each of the subdivided design work steps; and carrying out the refurbishment in accordance with the series of subdivided design work steps, wherein the series of subdivided design work steps comprises a first subdivided design work step and a second subdivided design work step.wherein the first subdivided construction work step comprises the following steps: installing a communication-capable floor device (600) in each floor; installing a communication-capable cabin device (700) in a cabin (6); and installing a communication relay device (500) and connecting the communication relay device (500) and an old control panel (100) to each other; connecting the communication relay device (500) and each of the communication-capable floor devices (600) to each other and connecting the communication relay device (500) and the communication-capable cabin device (700) to each other, wherein, upon completion of the first subdivided construction work step, the old control panel (100) is in a state in which it can communicate with the communication-capable floor devices (600) and the communication-capable cabin device (700) via the communication relay device (500),wherein the second split construction work step comprises a step of installing a new cabin device (202A) in the cabin (6) and connecting the new cabin device (202A) and the communication-capable cabin device (700) to each other, and wherein after completion of the second split construction work step the old control panel (100) is in a state in which it can communicate with the new cabin device (202A) via the communication relay device (500) and the communication-capable cabin device (700).

Description

Technical field The present invention relates to an elevator renovation design method. Background of the invention To address the aging process of a piece of equipment or to improve its performance, such as energy efficiency, an elevator modernization is carried out on an existing elevator. In this case, the elevator's operation must be continuously interrupted for an extended period during the modernization project, during which at least one component in the existing elevator is to be replaced. Therefore, a prolonged downtime of the elevator is a significant obstacle to modernization. To solve this problem, a lift renewal procedure is proposed which can shorten the continuous shutdown of the lift during the lift renewal construction work (see e.g. WO 2018 / 109 946 A1). Furthermore, US 2012 / 0023722A1 discloses a method for renovating an existing elevator which includes connecting a new group monitoring device, connected to new control panels, to existing elevator control devices via a relay device comprising a relay panel and an input / output panel, in order to enable the operation of existing elevator cars by the new group monitoring device. Furthermore, a lift renewal procedure and an auxiliary panel to be used for the renewal of a lift are also known from DE 11 2017 007 872 T5. Summary of the invention Technical problem Depending on the elevator specifications, a new method for reducing the continuous downtime of the elevator during elevator refurbishment construction work, which differs from the method disclosed in WO 2018 / 109946A1 described above, may be required. The present invention was made to solve the problems described above and has an objective of providing an elevator renewal design method that enables the reduction of continuous elevator downtime during an elevator renewal design period by an approach that differs from those in the related prior art. Solution to the problem According to the present invention, an elevator refurbishment design method is provided, comprising: subdividing a refurbishment process at a time of refurbishment of at least one device in an elevator into a series of subdivided design work steps, each defined as a unit such that the elevator is brought into a normally operational state after completion of each of the subdivided design work steps; and carrying out the refurbishment according to the series of subdivided design work steps, wherein the series of subdivided design work steps comprises a first subdivided design work step and a second subdivided design work step.wherein the first subdivided construction work step comprises the following steps: installing a communication-capable floor device in each floor; installing a communication-capable cabin device in a cabin; and installing a communication relay device and connecting the communication relay device and an old control panel to each other; connecting the communication relay device and each of the communication-capable floor devices to each other; and connecting the communication relay device and the communication-capable cabin device to each other, wherein, upon completion of the first subdivided construction work step, the old control panel is in a state in which it can communicate with the communication-capable floor devices and the communication-capable cabin device via the communication relay device.wherein the series of split construction work steps comprises a second split construction work step, wherein the second split construction work step comprises a step of installing a new cabin device (202A) in the cabin (6) and connecting the new cabin device (202A) and the communication-enabled cabin device (700) to each other, and wherein, after completion of the second split construction work step, the old control panel (100) is in a state in which it can communicate with the new cabin device (202A) via the communication relay device (500) and the communication-enabled cabin device (700). Advantageous effects of the invention, According to the present invention, it is possible to provide an elevator renewal design method that enables the reduction of the continuous elevator downtime during the elevator renewal design time by an approach that differs from those in the related prior art. Brief description of the drawings Fig. 1 is a configuration view illustrating an elevator device to which an elevator refurbishment design method according to a first embodiment of the present invention is to be applied. Fig. 2 is a table showing an example of a series of subdivided design work steps of the elevator refurbishment design method according to the first embodiment of the present invention. Fig. 3 is a block diagram illustrating an initial state of the elevator device to which the elevator refurbishment method according to the first embodiment of the present invention is to be applied. Fig. 4 is a block diagram illustrating a state of the elevator device after a subdivided design work step S1 has been carried out on the elevator device in the initial state illustrated in Fig. 3.Figure 5 is a block diagram illustrating a state of the elevator device after a split design step S2 has been performed for the elevator device in the state shown in Figure 4. Figure 6 is a block diagram illustrating a state of the elevator device after a split design step S3-1 has been performed for the elevator device in the state shown in Figure 5. Figure 7 is a block diagram illustrating a state of the elevator device after a split design step S3-2 has been performed for the elevator device in the state shown in Figure 6. Figure 8 is a block diagram illustrating a state of the elevator device after a split design step S4 has been performed for the elevator device in the state shown in Figure 7.Figure 9 is a block diagram illustrating a state of the elevator device after a split construction work step S5 has been carried out for the elevator device in the state shown in Fig. 8. Description of the embodiment The following describes an elevator refurbishment method according to a preferred embodiment of the present invention with reference to the accompanying drawings, wherein identical or corresponding components in the drawings are identified by the same reference symbols for describing these components. The term "communication" used in this embodiment includes the transmission and reception of various types of signals, such as a control signal, a voltage signal, and a current signal. First embodiment Fig. 1 is a configuration view illustrating an elevator device to which an elevator refurbishment method according to a first embodiment of the present invention is to be applied. As shown in Fig. 1, a traction unit 2 with a traction motor, a control panel 3, and a speed controller 4 is provided in a machine room 1. The control panel 3 is designed for controlling the elevator. In a shaft 5 are a cabin 6, a counterweight 7, a main rope 8, guide rails 9, and a limit switch 10. The main rope 8 is configured to couple the cabin 6 and the counterweight 7 to each other. Cabin 6 is equipped with a door drive device 11. The door drive device 11 comprises a door motor, an encoder, and a full-closing detector. The door motor is configured to drive a cabin door provided on cabin 6. The encoder is configured to detect the rotational position of the door motor. The full-closing detector is configured to detect when the cabin door is fully closed. Furthermore, a cabin control panel 12 is provided in cabin 6. A corridor control panel 14 is located in a corridor 13. Buffers 16 are provided in a pit 15. A device connected to cabin 6 is referred to as a "cabin device." Specific examples of cabin devices are the gate drive device 11 and the cabin control panel 12. Furthermore, a device relating to corridor 13 is referred to as a "corridor device." Specific examples of corridor devices are the corridor control panel 14, an indicator, and a corridor light. Furthermore, a device relating to shaft 5 is referred to as a "shaft device." Specific examples of shaft devices are the limit switch 10 and a shaft rope (not shown). Cabin 6 is equipped with a cabin control unit 18. More precisely, the cabin control unit 18 is mounted, for example, on the top of cabin 6. The cabin control unit 18 is connected to the control panel 3 via a trailing cable 17. The cabin control unit 18 is connected to the cabin device via a cable (not shown). The cabin control unit 18 controls the cabin device according to an instruction received from the control panel 3. In particular, the cabin control unit 18 opens and closes the cabin door by controlling the door drive device 11 in accordance with the command received from the control panel 3. Furthermore, the cabin control unit 18 forwards a signal received from the cabin device to the control panel 3. Next, subdivided design work steps to be performed during an elevator refurbishment design phase are described with reference to Fig. 2. Fig. 2 is a table illustrating examples of a series of subdivided design work steps of the elevator refurbishment design method according to the first embodiment of the present invention. In this case, the elevator renovation work is divided into numerous, manageable construction phases to minimize the elevator's continuous downtime during the renovation period. Each phase is designed to be completed within a guaranteed timeframe. Once each phase is finished, the elevator is available for use. Specifically, minimizing the elevator's downtime during the renovation phase depends on its availability upon completion of each phase. For example, in a residential building, the elevator must be available during peak morning and evening hours when a large number of users utilize it, such as for commuting to work or school.In a building with a restaurant, the elevator must be available, for example, during the evening and night hours. Therefore, if at least one elevator component is to be replaced, the replacement process is divided into a series of subdivided construction work steps, each defined as a self-contained unit such that the elevator is returned to normal working order after each subdivided construction work step is completed. The replacement construction work is carried out according to the sequence of subdivided construction work steps. As shown in Fig. 2, for example, the replacement construction work process is divided into five subdivided construction work steps, S1 to S5. However, the subdivided construction work steps must be organized into groups according to the elevator's specifications. In a split construction work step S1, a new control panel is installed separately from an existing control panel. The new control panel can be installed in a later split work step S4. Subsequently, a communication-enabled floor fixture is installed in a hallway on each floor where existing floor fixtures are present. The communication-enabled floor fixture functions like a floor fixture and includes a built-in communication module configured to enable wired or wireless communication with the existing control panel. Furthermore, a communication-enabled cabin device will be installed in the cabin. This device functions like a cabin device and includes a built-in communication module configured to allow wired or wireless communication with the old control panel. Additionally, a communication relay device will be installed near the old control panel. This relay device contains a built-in communication module that enables wired or wireless communication between the old control panel and any of the communication-enabled floor devices and the communication-enabled cabin device. Powerline communication (PLC) is one example of the wired communication mentioned above. Examples of wireless communication include mobile communication such as 4G or 5G, satellite communication, Wi-Fi, Bluetooth (brand), near-field optical communication, and visible light communication. In the first embodiment, an exemplary mode is shown in which wireless communication takes place between the communication relay device and the communication-enabled floor devices, and wireless communication takes place between the communication relay device and the communication-enabled cabin device. After completion of the split construction step S1, the elevator is brought into a normal operational state. In a collaborative construction step S2, a new cabin assembly is installed in the cabin. This collaborative construction step S2 is carried out after the collaborative construction step S1. After completion of the collaborative construction step S2, the elevator is returned to a fully functional state. In a split construction step S3, new floor fixtures are installed in the corridors of the floors where the existing floor fixtures are installed. Split construction step S3 is carried out following split construction step S2. After completion of split construction step S3, the elevator is returned to a fully operational state. In a split construction work step S4, a new cabin control system is installed in the cabin. Split construction work step S4 is performed after split construction work step S3. After completion of split construction work step S4, the elevator is returned to a normal operational state. In a collaborative construction step S5, an existing old tractor unit is replaced by a new one. This collaborative construction step S5 is carried out after the collaborative construction step S4. After completion of the collaborative construction step S5, the elevator is returned to a fully operational state. As described above, the elevator is returned to a normal operating state after the completion of each of the series of split construction work steps. This makes the elevator available to the user for a specific period after the completion of a split work step. This reduces the duration of the elevator's downtime. (Renovation process) The elevator refurbishment construction method according to the first embodiment is described below with reference to Figures 3, 4, 5, 6, 7, 8 to 9. Figure 3 is a block diagram illustrating an initial state of the elevator device to which the elevator refurbishment method according to the first embodiment of the present invention is to be applied. As shown in Fig. 3, an existing legacy control panel 100 includes a legacy control board 101, which is a control board configured to control the elevator device. When the elevator device is in its initial state, prior to the upgrade, the legacy control board 101 is wired to an existing legacy car control 201. The legacy car control 201 is wired to an existing legacy car device 202. Each floor of a building in which the elevator is installed has an existing legacy floor device 300. The legacy control board 101 is wired to the legacy floor devices 300. Furthermore, the legacy control board 101 is wired to an existing legacy traction unit 400. The old control board 101 communicates with the old cabin control unit 202 via the old cabin control unit 201. Furthermore, the old control board 101 communicates with each of the old floor control units 300 and the old traction unit 400. The old control board 101 controls the elevator system via the communication channels described above. (Split work execution step S1: Preparatory work) Next, the split design execution step S1 is described with reference to Fig. 4. Fig. 4 is a block diagram illustrating a state of the elevator device after the split design work step S1 has been carried out for the elevator device in the initial state shown in Fig. 3. In the split construction work step S1, a step involving the installation of a new control panel 100A in the machine room is carried out. The new control panel 100A includes a new control board 101A, which is a control board configured to control the elevator device. A step is taken to install a communication-enabled corridor device 600 in the corridor of each floor where the old corridor devices 300 are currently installed. In the corridor of each floor, the old corridor device 300 and the communication-enabled corridor device 600 communicate with each other on a one-to-one basis. Next, a communication-enabled cabin device 700 is installed in the cabin. Furthermore, a communication relay device 500 is installed near the old control panel 100, and the communication relay device 500 and the old control panel 101 are connected to each other by wire. Next, a step is performed to wirelessly connect the communication relay device 500 and each of the communication-enabled floor devices 600. Furthermore, a step is performed to wirelessly connect the communication relay device 500 and the communication-enabled cabin device 700. As described above, the first split construction work step S1, which is one of a series of split construction work steps, includes at least the following steps A1 to A5. (Step A1) The step of installing the new control panel 100A. (Step A2) The step of installing the communication-enabled corridor device 600 in the corridor of each floor. (Step A3) The step of installing the communication-enabled cabin device 700 in the cabin. (Step A4) The step of installing the communication relay device 500 and connecting the communication relay device 500 and the old control board 101 of the old control panel 100 together in a wired manner.(Step A5) The step of wirelessly connecting the communication relay device 500 and each of the communication-enabled floor devices 600 to each other and wirelessly connecting the communication relay device 500 and the communication-enabled cabin device 700 to each other. After completing the steps described above, the old control board 101 of the old control panel 100 can communicate with the communication-enabled floor devices 600 via the communication relay device 500. Furthermore, the old control board 101 can also communicate with the old floor devices 300. After completing the steps described above, the old control board 101 can communicate with the communication-enabled cabin unit 700 via the communication relay device 500. Furthermore, the old control board 101 can also communicate with the old cabin unit 202 via the old cabin control unit 201. As described above, the split construction work step S1 comprises the following steps: installing the communication-enabled floor device 600 in each floor; installing the communication-enabled cabin device 700 in a cabin; installing the communication relay device 500 and connecting the communication relay device 500 and the old control panel 100; connecting the communication relay device 500 and each of the communication-enabled floor devices 600; and connecting the communication relay device 500 and the communication-enabled cabin device 700. Furthermore, upon completion of split construction work step S1, the old control panel 100 is in a state where it can communicate with the communication-enabled floor devices 600 and the communication-enabled cabin device 700 via the communication relay device 500. Thus, after completion of the split construction work step S1, the elevator can be controlled via the old control panel 100 in a state where the old floor devices 300 and the communication-enabled floor devices 600 are present simultaneously, and the old car device 202 and the communication-enabled car device 700 are present simultaneously. This allows the elevator to be brought into a normally functioning state. In particular, the user can operate the elevator by using the communication-enabled floor device 600 or the old floor device 300 in the corridor of each floor and the communication-enabled car device 700 or the old car device 202 in the car. (Split work execution step S2: Working on the cabin) The following describes the split design execution step S2 with reference to Fig. 5. Fig. 5 is a block diagram illustrating a state of the elevator device after the split design work step S2 has been carried out for the elevator device in the state shown in Fig. 4. In the split construction work step S2, a new cabin device 202A is installed in the cabin. Subsequently, the new cabin device 202A and the communication-enabled cabin device 700 are wired together. Finally, the new cabin device 202A and the old cabin control unit 201 are connected by wiring. As described above, the series of split construction work steps includes the second split construction work step S2, which comprises at least the following steps B1 to B2: (Step B1) The step of installing the new cabin device 202A into the cabin. (Step B2) The step of connecting the new cabin device 202A and the communication-enabled cabin device 700 to each other in a wired manner, and of connecting the new cabin device 202A and the old cabin control 201 to each other in a wired manner. After performing the above steps, the old control board 101 of the old control panel 100 can communicate with the new cabin device 202A via the communication relay device 500 and the communication-capable cabin device 700. As described above, the split construction work step S2 comprises the step of installing the new cabin device 202A in the cabin and connecting the new cabin device 202A and the communication-enabled cabin device 700 to each other. After completion of the split construction work step S2, the old control panel 100 is in a state in which it can communicate with the new cabin device 202A via the communication relay device 500 and the communication-enabled cabin device 700. Thus, after completion of the split construction work step S2, the elevator can be controlled via the old control panel 100 in a state where both the old floor devices 300 and the communication-enabled floor devices 600 are present and the car device has been refurbished. This allows the elevator to be brought into a normally functioning state. Specifically, the user can operate the elevator by using either the communication-enabled floor device 600 or the old floor device 300 in the corridor of each floor and the new car device 202A in the car. (Split work execution step S3: Working on the floor stop) The following describes the split design implementation step S3 with reference to Figures 6 and 7. Figure 6 is a block diagram illustrating a state of the elevator device after split design implementation step S3-1 has been carried out for the elevator device in the state shown in Figure 5. Figure 7 is a block diagram illustrating a state of the elevator device after split design work step S3-2 has been carried out for the elevator device in the state shown in Figure 6. The split design work step S3 is further subdivided into the split design work step S3-1 and the split design work step S3-2. In the split construction work step S3-1, a step is performed to remove the old cabin device 202. Subsequently, a step is performed to install new corridor devices 300A in the corridors of a portion of all floors where the old corridor devices 300 are currently installed. Then, the new corridor device 300A and the communication-enabled corridor device 600 are wired together on each of the floors where the new corridor devices 300A are installed. Finally, a step is performed on each of the floors where the new corridor devices 300A are installed to remove the old corridor device 300. As described above, the split construction work step S3-1, which is a step obtained by further subdividing the split construction work step S3 according to one of the series of split construction work steps, comprises at least the following steps C1 to C4: (Step C1) The step of removing the old cabin device 202. (Step C2) The step of installing the new corridor devices 300A in the corridors of a portion of all floors where the old corridor devices 300 are installed. (Step C3) The step of connecting the new corridor device 300A and the communication-capable corridor device 600 to each other in a wired manner on each of the floors where the new corridor devices 300A are installed, and removing the old corridor devices 300. After completing the steps described above, the old control board 101 of the old control panel 100 can communicate with the new floor-level devices 300A, which are installed in the hallways of some floors, via the communication relay device 500 and the communication-enabled floor-level devices 600. Furthermore, the old control board 101 communicates with the old floor-level devices 300, which are installed in the hallways of the other floors, and can communicate with the communication-enabled floor-level devices 600, which are installed in the hallways of the other floors, via the communication relay device 500. Thus, after completion of the split construction step S3-1, the elevator can be controlled via the old control panel 100 in a state where the floor-level devices in the corridors of some floors have been renovated and the car-level device has been renovated. This allows the elevator to be brought into a normally functioning state. In particular, the user can operate the elevator by using the new floor-level devices 300A in the corridors of some floors, the communication-enabled floor-level devices 600 or the old floor-level devices 300 in the corridors of the other floors of all floors, and the new car-level device 202A in the car. In the split construction work step S3-2, following the completion of the split construction work step S3-1, a step is performed to install the new 300A floor devices in the corridors of the other floors on all floors. Subsequently, the new 300A floor device and the communication-enabled 600 floor device are wired together on each of the floors where the new 300A floor devices are installed. Finally, a step is performed on each of the floors where the new 300A floor devices are installed to remove the old 300 floor device. As described above, the split construction work step S3-2, which is a step obtained by further subdividing the split construction work step S3 according to one of the series of split construction work steps, includes at least the following steps C4 to C5. (Step C4) The step of installing the new 300A corridor devices in the corridors of the other floors of all floors where the old 300 corridor devices are installed. (Step C5) The step of connecting the new 300A corridor device and the 600 communication-enabled corridor device to each other in a wired manner on each of the floors where the new 300A corridor devices are installed, and removing the old 300 corridor devices. After completing the above steps, the old control board 101 of the old control panel 100 can communicate with the new floor devices 300A, which are installed in the corridors of all floors, via the communication relay device 500 and the communication-capable floor devices 600. Thus, after completion of the split construction step S3-2, the elevator can be controlled via the old control panel 100 in a state where the floor-level devices in the corridors of all floors have been renewed and the car-level device has been renewed. This allows the elevator to be returned to a normally functioning state. In particular, the user can operate the elevator by using the new floor-level device 300A in the corridor of each floor and the new car-level device 202A in the car. As described above, construction work step S3 includes the step of installing the new floor device 300A in the floor and connecting the floor device 300A and the communication-enabled floor device 600 to each other. After completion of the split construction work step S3, the old control panel 100 is in a state in which it can communicate with the new floor device 300A via the communication relay device 500 and the communication-enabled floor device 600. (Split work execution step S4: Control system modernization work) Next, the split design execution step S4 is described with reference to Fig. 8. Fig. 8 is a block diagram illustrating a state of the elevator device after the split design work step S4 has been carried out for the elevator device in the state shown in Fig. 7. In the split construction work step S4, one step involves installing a new cabin control unit 201A in the cabin and connecting the new cabin control unit 201A and the new control board 101A of the new control panel 100A to each other in a wired manner. Subsequently, a step is performed to remove the old cabin control unit 201 and the communication-enabled cabin device 700. A step is performed in which the new 300A floor-level floor-level device is installed in the hallway, and the new 101A control board of the new 100A control panel is wired together. Following this, a step is performed to remove the old 300 floor-level devices and the communication-enabled 600 floor-level devices. Then the old tractor unit 400 and the new control board 101A of the new control panel 100A are wired together. As described above, the fourth split construction work step S4, which is one of the series of split construction work steps, comprises at least the following steps D1 to D4. (Step D1) The step of installing the new cabin control 201A in the cabin and connecting the new cabin control 201A and the new control board 101A of the new control panel 100A to each other in a wired manner. (Step D2) The step of removing the old cabin control 201, the communication-enabled floor devices 600, and the communication-enabled cabin device 700. (Step D3) The step of connecting each of the new floor devices 300A, which are installed in the floor corridors, to the new control board 101A of the new control panel 100A to each other in a wired manner. (Step D4) The step of connecting the old tractor unit 400 and the new control board 101A of the new Control panel 100A connected in a wired manner. After completing the steps described above, the new control board 101A of the new control panel 100A can communicate with the new cabin device 202A via the new cabin control 201A. Furthermore, the new control board 101A can also communicate with any of the new floor devices 300A and the old tractor unit 400. As described above, the split construction work step S4 comprises the following steps: installing the new cabin control unit 201A in the cabin and connecting the new cabin control unit 201A and the new control panel 100A; and connecting each of the new floor devices 300A and the new control panel 100A. Furthermore, upon completion of the split construction work step S4, the new control panel 100A is in a state where it can communicate with the new cabin device 202A via the new cabin control unit 201A and in a state where it can communicate with the new floor devices 300A. Thus, after completion of the split construction step S4, the elevator can be controlled by the new control panel 100A in a state where the control panel and the control system have been refurbished. This allows the elevator to be returned to a normally functioning state. In particular, the user can operate the elevator by using the new floor device 300A and the new cabin device 202A in the cabin. (Split work execution step S5: Replacement of the lifting machine) The following describes step S5 of the split design work with reference to Fig. 9. Fig. 9 is a block diagram illustrating a state of the elevator device after split design work step S5 has been carried out for the elevator device in the state shown in Fig. 8. In the split construction work step S5, one step involves replacing the old tractor unit 400 with a new tractor unit 400A. Subsequently, a step involves connecting the new control board 101A, the new control panel 100A, and the new tractor unit 400A to each other in a wired manner. As described above, the fifth split design work step S5, which is one of the series of split design work steps, includes at least the following steps E1 and E2. (Step E1) The step of replacing the old tractor 400 with the new tractor 400A. (Step E2) The step of connecting the new control panel 100A and the new tractor 400A to each other in a wired manner. After completing the above steps, the new control board 101A of the new control panel 100A can communicate with the new tractor unit 400A. As described above, the split construction work step S5 comprises the following steps: replacing the old tractor 400 with the new tractor 400A; and connecting the new tractor 400A and the new control panel 100A. Furthermore, after completion of the split construction work step S5, the new control panel 100A is in a state where it can communicate with the new tractor 400A. Thus, after completion of the split construction work step S5, the elevator can be controlled by the new control panel 100A in a state where the traction unit has been refurbished. Consequently, the elevator can be returned to normal operating condition. Once all the aforementioned series of subdivided construction work steps S1 to S5 are completed, the elevator refurbishment is finished. As described above, at the time of completion of the elevator refurbishment, all the equipment being refurbished is connected to the new control panel 100A. The old control panel 100 is therefore no longer needed. Consequently, the old control panel 100, which is no longer required, can be removed. The old control panel 100 can be removed, for example, at the time of completion of the refurbishment or maintenance of the elevator. It is not necessary to carry out all of the subdivided construction steps S2 to S5, and the execution of some of the steps can be skipped. As mentioned above, according to the first embodiment of the present invention, in the elevator refurbishment construction method, the split construction work step S1, which is one of the series of split construction work steps, comprises the following steps: installing the communication-enabled floor device 600 in each floor; installing the communication-enabled car device 700 in a car; and installing the communication relay device 500 and connecting the communication relay device 500 and the old control panel 100 to each other; connecting the communication relay device 500 and each of the communication-enabled floor devices 600 to each other; and connecting the communication relay device 500 and the communication-enabled car device 700 to each other.Furthermore, after completion of the split construction work step S1, the old switchboard 100 is in a state in which it can communicate with the communication-capable floor devices 600 and the communication-capable cabin device 700 via the communication relay device 500. This approach can reduce the continuous elevator downtime during the elevator modernization construction phase. At the same time, both equipment costs and labor costs can be reduced. List of reference symbols 1 Engine room, 2 Tractor unit, 3 Control panel, 4 Speed ​​controller, 5 Shaft, 6 Cab, 7 Counterweight, 8 Main rope, 9 Guide rail, 10 Limit switch, 11 Door drive device, 12 Cab control panel, 13 Corridor, 14 Corridor control panel, 15 Pit, 16 Buffer, 17 Track rope, 18 Cab control, 100 Old control panel, 100A New control panel, 101A New control board, 201 Old cabin control, 202 Old cabin device, 201A New cabin control, 202A New cabin device, 300 Old corridor device, 300A New corridor device, 400 Old tractor unit, 400A New tractor unit, 500 Communication relay device, 600 Communication-enabled corridor device, 700 Communication-enabled cabin device

Claims

An elevator refurbishment design method comprising: subdividing a refurbishment process at the time of refurbishment of at least one device in an elevator into a series of subdivided design work steps, each defined as a unit such that the elevator is brought into a normally operational state upon completion of each of the subdivided design work steps; and carrying out the refurbishment in accordance with the series of subdivided design work steps, wherein the series of subdivided design work steps comprises a first subdivided design work step and a second subdivided design work step.wherein the first subdivided construction work step comprises the following steps: installing a communication-capable floor device (600) in each floor; installing a communication-capable cabin device (700) in a cabin (6); and installing a communication relay device (500) and connecting the communication relay device (500) and an old control panel (100) to each other; connecting the communication relay device (500) and each of the communication-capable floor devices (600) to each other and connecting the communication relay device (500) and the communication-capable cabin device (700) to each other, wherein, upon completion of the first subdivided construction work step, the old control panel (100) is in a state in which it can communicate with the communication-capable floor devices (600) and the communication-capable cabin device (700) via the communication relay device (500),wherein the second split construction work step comprises a step of installing a new cabin device (202A) in the cabin (6) and connecting the new cabin device (202A) and the communication-capable cabin device (700) to each other, and wherein after completion of the second split construction work step the old control panel (100) is in a state in which it can communicate with the new cabin device (202A) via the communication relay device (500) and the communication-capable cabin device (700). The elevator renewal construction method according to claim 1, wherein the series of split construction work steps comprises a third split construction work step, wherein the third split construction work step comprises a step of installing a new floor device (300A) in the floor (13) and connecting the new floor device (300A) and the communication-capable floor device (600) to each other, and wherein, after completion of the third split construction work step, the old control panel (100) is in a state in which it can communicate with the new floor device (300A) via the communication relay device (500) and the communication-capable floor device (600). The elevator refurbishment design method according to claim 2, wherein the series of split design work steps comprises a fourth split design work step, the fourth split design work step comprising the steps of: installing a new cabin control (201A) in the cabin (6) and connecting the new cabin control (201A) and a new control panel (100A) to each other; and connecting each of the new floor devices (300A) and the new control panel (100A) to each other, and wherein, upon completion of the fourth split design work step, the new control panel (100A) is in a state in which it can communicate with the new cabin device (202A) via the new cabin control (201A), and is in a state in which it can communicate with the new floor devices (300A). The elevator refurbishment design method according to claim 3, wherein the series of split design work steps comprises a fifth split design work step, wherein the fifth split design work step comprises the steps of: replacing an old tractor (400) with a new tractor (400A); and connecting the new tractor (400A) and the new control panel (100A) to each other, and wherein, after completion of the fifth split design work step, the new control panel (100A) is in a state in which it can communicate with the new tractor (400A).

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