Passenger conveyor and flood prevention device

Abstract

To provide a passenger conveyor and a flooding arrester capable of suppressing submersion of an electric panel installed in a machine room in water.SOLUTION: A passenger conveyor 1 comprises: an electric panel 10 installed in a machine room 2; a water-level detection device 40 that detects a water level in the machine room 2; and a flooding arrester 100. The flooding arrester 100 supports the electric panel 10 to be vertically movable, and vertically moves the electric panel 10 on the basis of a water-level signal detected by the water-level detection device 40.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a passenger conveyor and a waterlogging prevention device.

Background Art

[0002] Conventionally, a passenger conveyor has a plurality of steps connected in an endless manner that circulate inside a building structure. And in the building structure, a machine room for installing an electric panel is provided. Also, as a technique for detecting flooding in the machine room, there is, for example, one described in Patent Document 1.

[0003] Patent Document 1 describes a technique for detecting and dealing with flooding in a lower pit formed below a lower boarding and alighting opening. And in Patent Document 1, it is described that a water storage lift is formed at the bottom of the lower pit, and flood detection means for detecting flooding and outputting a flood detection signal is arranged in this water storage lift.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the technique described in Patent Document 1, although flooding in the machine room can be detected by a water level detection device, it was not possible to prevent the electric panel installed in the machine room from being immersed in water. Therefore, in order to restore the passenger conveyor, it was necessary to replace the electric panel immersed in water, and the restoration work was extremely complicated.

[0006] An object of the present invention is to provide a passenger conveyor and a waterlogging prevention device that can prevent the electric panel installed in the machine room from being immersed in water in consideration of the above problems.

Means for Solving the Problems

[0007] To solve the above problems and achieve the objective, the passenger conveyor is a passenger conveyor installed in a building structure and equipped with multiple steps connected in an endless manner. The passenger conveyor comprises an electrical panel installed in a machine room provided in the building structure, a water level detection device for detecting the water level in the machine room, and a flood prevention device. The flood prevention device supports the electrical panel so that it can move in the vertical direction and moves the electrical panel in the vertical direction based on the water level signal detected by the water level detection device.

[0008] Furthermore, the flood prevention device is installed on a passenger conveyor equipped with multiple steps connected in an endless loop. The flood prevention device also supports an electrical panel installed in a machine room within a building structure so that it can move vertically. The flood prevention device moves the electrical panel vertically based on a water level signal detected by a water level detection device that detects the water level in the machine room.

[0009] Another type of flood prevention device is one installed on a passenger conveyor equipped with multiple steps connected in an endless loop. This flood prevention device includes a guide rail that supports an electrical panel installed in a machine room within a building structure so that it can move vertically, and a float provided on the electrical panel that moves vertically according to the water level in the machine room. [Effects of the Invention]

[0010] With the passenger conveyor and flood prevention device configured as described above, it is possible to prevent the electrical panel installed in the machine room from being submerged in water. [Brief explanation of the drawing]

[0011] [Figure 1] This is a schematic diagram showing a passenger conveyor according to the first embodiment. [Figure 2] This is a block diagram showing the control system for a passenger conveyor and flood prevention device according to the first embodiment. [Figure 3]This is a flowchart illustrating the operation of the passenger conveyor and flood prevention device according to the first embodiment. [Figure 4] This is a schematic diagram showing a flood prevention device according to a second embodiment. [Modes for carrying out the invention]

[0012] The following describes embodiments of the passenger conveyor and flood prevention device with reference to Figures 1 to 4. Note that common components in each figure are denoted by the same reference numerals.

[0013] 1. Example of the first embodiment 1-1. Configuration of the passenger conveyor First, the configuration of the passenger conveyor according to the first embodiment (hereinafter referred to as "this example") will be described with reference to Figure 1. Figure 1 is a schematic diagram showing the passenger conveyor belt.

[0014] The passenger conveyor 1 shown in Figure 1 is an inclined passenger conveyor, also known as an escalator, installed on the lower and upper floors of a building structure. The passenger conveyor 1 comprises a lower boarding / alighting platform 4, multiple steps 5, a railing 6, step chains 7, a lower sprocket 8, a lower electrical panel 10, a flood prevention device 100, and a water level detection device 40. The lower boarding / alighting platform 4 covers the upper part of the lower machine room 2 located on the lower floor 3 in the vertical direction.

[0015] The lower electrical panel 10 supplies power and transmits / receives signals to various sensors and operating switches installed on the lower floor side of the passenger conveyor 1. The lower electrical panel 10 is connected to the escalator control panel (passenger conveyor control panel) 50 (see Figure 2), which controls the entire passenger conveyor 1 and is installed in the upper machine room on the upper floor of the building structure, enabling the transmission and reception of information. The length of the wiring connecting the lower electrical panel 10 to other equipment is set to a length that takes into account the movement of the lower electrical panel 10.

[0016] In the lower machine room 2, a lower sprocket 8, a lower electric panel 10, a water level detection device 40, and a waterlogging prevention device 100 are installed. A tread chain 7 is wound around the lower sprocket 8. The tread chain 7 is wound around the lower sprocket 8 and an upper sprocket (not shown) installed on the upper floor. Further, when a drive mechanism (not shown) is driven, the upper sprocket rotates. When the upper sprocket rotates, the lower sprocket 8 rotates via the tread chain 7, and the tread chain 7 circulates between the upper sprocket and the lower sprocket 8. The drive mechanism (not shown) is installed in an upper machine room provided on the upper floor of the building structure.

[0017] A plurality of treads 5 are connected to the tread chain 7 in an endless manner. The plurality of treads 5 are movably supported by a guide rail (not shown). Then, the plurality of treads 5 circulate between the upper sprocket and the lower sprocket 8 along the guide rail and travel between the lower floor and the upper floor of the building structure. Also, the traveling direction of the plurality of treads 5 is reversed at the upper sprocket and the lower sprocket 8.

[0018] Railings 6 are installed at both end portions in the width direction orthogonal to the traveling direction of the plurality of treads 5. A handrail is provided at the peripheral edge of the railing 6. Then, the handrail circulates in synchronization with the circulating movement operation of the plurality of treads 5.

[0019] The water level detection device 40 is arranged near a drain port M1 provided in the lower machine room 2. And the water level detection device 40 detects the water level of the lower machine room 2. The water level signal detected by the water level detection device 40 is output to the waterlogging prevention device 100.

[0020] The waterlogging prevention device 100 has a bracket drive device 20 and a support bracket 21. The support bracket 21 is formed in a substantially flat plate shape. The lower electric panel 10 is fixed to the support bracket 21. The upper end portion in the vertical direction of the support bracket 21 is arranged at the upper end portion in the vertical direction of the lower machine room 2.

[0021] Further, the upper end portion of the support bracket 21 in the vertical direction is supported by the bracket drive device 20 so as to be rotatable (movable). Further, the upper end portion of the support bracket 21 is disposed at the upper end portion of the lower machine room 2 in the vertical direction. Therefore, the bracket drive device 20 is installed at the upper end portion of the lower machine room 2. When the bracket drive device 20 is driven, the support bracket 21 rotates upward in the vertical direction around the bracket drive device 20 while supporting the lower switchboard 10. As a result, the lower switchboard 10 is retracted to a retracted position above the lower machine room 2 in the vertical direction by the support bracket 21 of the water ingress prevention device 100.

[0022] In addition, in this example, an example of rotating the support bracket 21 has been described as the bracket drive device 20, but it is not limited thereto. As the bracket drive device 20, the support bracket 21 may be moved in the vertical direction along a guide rail extending in the vertical direction, and various other moving mechanisms may be applied.

[0023] 1-2. Configuration of Control System Next, the configuration of the control system of the passenger conveyor 1 and the water ingress prevention device 100 having the above-described configuration will be described with reference to FIG. 2. FIG. 2 is a block diagram showing the configuration of the control system of the passenger conveyor 1 and the water ingress prevention device 100.

[0024] As shown in FIG. 2, the water ingress prevention device 100 includes a water level determination unit 101, an operation control unit 102, and a signal output unit 103. The water level determination unit 101 is connected to the operation control unit 102, the signal output unit 103, and the water level detection device 40. Further, the contact portion of the water level detection device 40 and the cable connecting the water level detection device 40 and the water level determination unit 101 are subjected to waterproofing treatment.

[0025] The water level determination unit 101 receives the water level signal detected by the water level detection device 40. Based on the received water level signal, the water level determination unit 101 determines the flooding state of the lower machine room 2. The flooding states determined by the water level determination unit 101 include, for example, flooding / recovery determination and water level rise / fall / flooding determination. The water level determination unit 101 outputs the determination results to the operation control unit 102 and the signal output unit 103. Specifically, the water level determination unit 101 outputs the determination results of flooding / recovery determination and water level rise / fall / flooding determination to the signal output unit 103. Then, the water level determination unit 101 outputs the determination result of water level rise / fall / flooding determination to the operation control unit 102.

[0026] Furthermore, the passenger conveyor 1 includes an escalator control panel 50 that controls the entire passenger conveyor 1, and a lower electrical panel power cut-off device 25. The escalator control panel 50 includes a signal issuing unit 51 and an operation control unit 52 that controls the drive of the drive mechanism. The escalator control panel 50 is positioned above the lower machine room 2 where the lower electrical panel 10 is installed. For example, the escalator control panel 50 is installed in an upper machine room located on the upper floor of a building structure.

[0027] The operation control unit 102 is connected to the bracket drive unit 20 and the lower electrical panel power cut-off device 25. Based on the determination result of the water level determination unit 101, the operation control unit 102 outputs various drive commands to the bracket drive unit 20 and the lower electrical panel power cut-off device 25, thereby controlling the operation of the bracket drive unit 20 and the lower electrical panel power cut-off device 25. Specifically, the operation control unit 102 outputs an up / down command to the bracket drive unit 20. Based on the up / down command output from the operation control unit 102, the bracket drive unit 20 drives to raise or lower the support bracket 21 (see Figure 1).

[0028] Furthermore, the operation control unit 102 outputs a cutoff / restore command to the lower electrical panel power cutoff device 25. The lower electrical panel power cutoff device 25 is connected to the lower electrical panel 10 (see Figure 1). Based on the cutoff / restore command output from the operation control unit 102, the lower electrical panel power cutoff device 25 cuts off or restores (turns on) power to the lower electrical panel 10.

[0029] The signal output unit 103 is connected to the signal generation unit 51 and the operation control unit 52. Based on the determination result of the water level determination unit 101, the signal output unit 103 outputs a status signal indicating the status of the lower machine room 2 to the signal generation unit 51. The signal generation unit 51 is also connected to an external monitoring panel or maintenance center 200. The signal generation unit 51 then emits flooding / electrical panel relocation / flooding / restoration signals, etc., to the external monitoring panel or maintenance center 200.

[0030] Furthermore, the signal output unit 103 outputs a stop / restart impossible / release signal to the operation control unit 52 based on the determination result of the water level determination unit 101, indicating the operation of the drive mechanism. The operation control unit 52 then controls the operation of the drive mechanism based on the stop / restart impossible / release signal output from the signal output unit 103.

[0031] In this way, the control unit for controlling the flood prevention device 100 is provided independently of the escalator control panel (passenger conveyor control unit) 50 and the lower electrical panel 10, which control the entire passenger conveyor 1. As a result, even if the power supply to the passenger conveyor 1 is cut off, the water level determination unit (control unit) 101 of the flood prevention device 100 can perform flooding / restoration determination and water level rise / fall / flood determination. The control system for the flood prevention device 100 may also be provided in the escalator control panel (passenger conveyor control unit) 50. In this case, it is preferable that the control system for the flood prevention device 100 be provided in a control panel such as an upper control panel, which is different from the lower electrical panel 10.

[0032] Each of the above-mentioned components, functions, and processing units may be partially or entirely implemented in hardware, for example, by designing an integrated circuit. Alternatively, each of the above-mentioned components and functions may be implemented in software by a processor interpreting and executing a program that implements each function. Information such as programs, tables, and files that implement each function can be stored in memory, hard disks, SSDs (Solid State Drives), or other recording media such as IC cards, SD cards, or DVDs.

[0033] 1-3. Example of Operation Next, an example of the operation of the passenger conveyor 1 and the flood prevention device 100 having the above-described configuration will be explained with reference to Figure 3. Figure 3 is a flowchart showing the operation of the passenger conveyor and the flood prevention device.

[0034] First, as shown in Figure 3, the operation control unit 52 of the escalator control panel 50 drives the drive mechanism to operate the passenger conveyor (escalator) 1 (step S11). Next, the water level determination unit 101 receives a water level signal from the water level detection device 40 and determines whether or not it has detected flooding in the lower machine room 2 (step S12). If no flooding is detected in step S12 (NO determination in step S12), the flooding detection process in step S12 is continued.

[0035] Furthermore, if the system determines that water has entered the lower machine room 2 during the process in step S12 (YES determination in step S12), the operation control unit 52 stops the passenger conveyor (escalator) 1 and makes it impossible to restart it. The signaling unit 51 also sends an alert to the external monitoring panel and maintenance center 200 that the passenger conveyor 1 has stopped due to water ingress (step S13).

[0036] In step S13, the water level determination unit 101 first determines whether the lower machine room 2 is submerged based on the water level signal from the water level detection device 40, and outputs the determination result to the signal output unit 103. The signal output unit 103 then outputs a status signal to the signal alarm unit 51 indicating that the lower machine room 2 is submerged. As a result, the signal alarm unit 51 alerts the external monitoring panel and maintenance center 200 that the passenger conveyor 1 has stopped due to the submersion.

[0037] Furthermore, the signal output unit 103 outputs a signal to the operation control unit 52 that prevents the drive mechanism from being stopped and restarted. Based on this signal, the operation control unit 52 stops the passenger conveyor (escalator) 1 and prevents it from being restarted.

[0038] Next, the water level determination unit 101 receives a water level signal from the water level detection device 40 and determines whether the water level in the lower machine room 2 has dropped to the recovery position (step S14). If, in the process of step S14, it is determined that the water level in the lower machine room 2 has dropped to the recovery position (YES determination in step S14), the operation control unit 52 allows the passenger conveyor 1 to be restarted and controls the drive mechanism. The signal generation unit 51 also generates an alert to the external monitoring panel and maintenance center 200 that the passenger conveyor 1 has been restored (step S15).

[0039] In step S15, first, the water level determination unit 101 makes a recovery determination based on the water level signal from the water level detection device 40 and outputs the determination result to the signal output unit 103. The signal output unit 103 then outputs a status signal to the signal notification unit 51 indicating that the water level in the lower machine room 2 has dropped to the recovery position. As a result, the signal notification unit 51 notifies the external monitoring panel and maintenance center 200 that the passenger conveyor 1 has been restored. Furthermore, the signal output unit 103 outputs a drive mechanism release signal to the operation control unit 52. Based on this signal, the operation control unit 52 restarts the passenger conveyor (escalator) 1.

[0040] Furthermore, if, during the process of step S14, it is determined that the water level in the lower machine room 2 has not fallen to the recovery position (NO determination in step S14), the water level determination unit 101 determines, based on the water level signal, whether the water level has risen further or not (step S16). If, during the process of step S16, it is determined that the water level has not risen (NO determination in step S16), the process returns to step S14.

[0041] In response to this, if it is determined in step S16 that the water level has risen (YES determination in step S16), the process proceeds to step S17. In step S17, the water level determination unit 101 outputs a water level rise determination as the determination result to the operation control unit 102 and the signal output unit 103. The operation control unit 102 then outputs a shut-off command to the lower electrical panel power cut-off device 25 and an upward command to the bracket drive device 20.

[0042] Next, the lower electrical panel power cutoff device 25 cuts off the power supply to the lower electrical panel 10. As a result, it is possible to prevent the lower electrical panel 10 from leaking electricity due to flooding. In addition, the bracket drive device 20 moves (rotates) the support bracket 21 upward in the vertical direction. This prevents the lower electrical panel 10, which is fixed to the support bracket 21, from being submerged in water. As a result, when the water level drops, the lower electrical panel 10 can be reused, and the restoration work of the passenger conveyor 1 can be easily carried out.

[0043] Furthermore, the bracket drive unit 20 is positioned above the lower machine room 2 in a location that is less likely to be submerged in water. Even if the lower machine room 2 is flooded, the bracket drive unit 20 can be reliably driven, and the lower electrical panel 10 can be moved out of the way.

[0044] Furthermore, the signal output unit 103 outputs a status signal to the signal generator 51 indicating that the lower electrical panel 10 has been retracted. The signal generator 51 then notifies an external monitoring panel or maintenance center 200 of the retraction operation of the lower electrical panel 10. This allows workers to know the status of the lower electrical panel 10 through the external monitoring panel or maintenance center 200.

[0045] Next, the water level determination unit 101 determines whether the water level has dropped based on the water level signal (step S18). If, in the process of step S18, it is determined that the water level has not dropped (NO determination in step S18), the water level determination unit 101 determines whether the lower electrical panel 10 has been submerged based on the water level signal (step S19). If, in the process of step S18, it is determined that the water level has dropped (YES determination in step S18), the process proceeds to step S20. The process of step S20 will be described later.

[0046] Furthermore, if it is determined in step S19 that the lower electrical panel 10 is not flooded (NO determination in step S19), the process returns to step S18. Conversely, if it is determined in step S19 that the lower electrical panel 10 is flooded (YES determination in step S19), the water level determination unit 101 outputs the flooding determination to the signal output unit 103. The signal output unit 103 then outputs a status signal to the signal alarm unit 51 indicating that the lower electrical panel 10 is flooded. The signal alarm unit 51 then alerts the external monitoring panel and maintenance center 200 that the lower electrical panel 10 is flooded (step S21).

[0047] Next, the water level determination unit 101 determines whether or not the flooding of the lower electrical panel 10 has been released based on the water level signal (step S22). If it is determined in step S22 that the flooding of the lower electrical panel 10 has not been released (NO determination in step S22), the process of step S22 is continued.

[0048] Furthermore, if the process in step S22 determines that the flooding of the lower electrical panel 10 has been released (YES determination in step S22), the water level determination unit 101 outputs the release determination to the signal output unit 103. The signal output unit 103 then outputs a status signal to the signal alarm unit 51 indicating that the flooding of the lower electrical panel 10 has been released. The signal alarm unit 51 then alerts the external monitoring panel and maintenance center 200 that the flooding of the lower electrical panel 10 has been released (step S23). Once the process in step S23 is completed, the process proceeds to step S18.

[0049] Furthermore, in step S20, the water level determination unit 101 outputs a water level decrease determination as a result to the operation control unit 102 and the signal output unit 103. The operation control unit 102 then outputs a recovery command to the lower electrical panel power cutoff device 25 and a lowering command to the bracket drive device 20.

[0050] Next, the lower electrical panel power cutoff device 25 restores the power supply and delivers power to the lower electrical panel 10. The bracket drive device 20 also moves (rotates) the support bracket 21 downwards in the vertical direction, returning the lower electrical panel 10, which is fixed to the support bracket 21, to its initial position. As a result, the recovery work when restarting the passenger conveyor 1 can be easily performed.

[0051] Furthermore, the signal output unit 103 outputs a status signal to the signal issuing unit 51 indicating that the lower electrical panel 10 has been returned to its original position. The signal issuing unit 51 then issues a notification to an external monitoring panel or maintenance center 200 regarding the return operation of the lower electrical panel 10. Once the processing in step S20 is complete, the process proceeds to step S14.

[0052] By performing the actions described above, the operation of the passenger conveyor 1 and the flood prevention device 100 in this example is completed.

[0053] 2. Second Embodiment Example Next, a flood prevention device according to a second embodiment will be described with reference to Figure 4. Figure 4 is a schematic diagram showing a flood prevention device according to a second embodiment. Parts common to the passenger conveyor 1 and flood prevention device 100 in the first embodiment are denoted by the same reference numerals, and redundant explanations are omitted.

[0054] As shown in Figure 4, the flood prevention device 100B has two guide rails 31, 31 that support the lower electrical panel 10 so that it can move along the vertical direction, and a float 30. The float 30 is installed at the lower end of the lower electrical panel 10 in the vertical direction. The float 30 is formed of, for example, a hollow member and is configured to float on the water surface W1. Due to the buoyancy of the float 30 itself, the float 30 moves automatically in the vertical direction according to the height of the water surface W1. As the float 30 moves in the vertical direction, the lower electrical panel 10 moves along the guide rails 31, 31. As a result, even if the lower machine room 2 is flooded, the lower electrical panel 10 can be prevented from being submerged in water.

[0055] Furthermore, according to the flood prevention device 100B of the second embodiment, the lower electrical panel 10 can be automatically moved by the buoyancy of the float 30 without the need for a water level detection device 40. In addition, the flood prevention device 100B of the second embodiment may also be provided with a water level detection device 40, similar to the flood prevention device 100 of the first embodiment, to detect the flooding state of the lower machine room 2 and to report the status of the passenger conveyor 1 to an external monitoring panel or maintenance center 200.

[0056] Since the other components are the same as those of the flood prevention device 100 according to the first embodiment, their description will be omitted. The flood prevention device 100B according to the second embodiment, having such a configuration, can also obtain the same effects and advantages as the flood prevention device 100 according to the first embodiment described above.

[0057] It should be noted that the present invention is not limited to the embodiments described above and shown in the drawings, and various modifications can be made without departing from the spirit of the invention as described in the claims.

[0058] The above-described embodiment illustrates a passenger conveyor equipped with a flood prevention device, but the invention is not limited to this. For example, a flood prevention device having the above configuration may be newly installed on an existing passenger conveyor that does not have a flood prevention device during maintenance, inspection, or renewal work. Furthermore, by providing the control system for the flood prevention device 100 independently of the escalator control panel (passenger conveyor control unit) 50, the installation of the flood prevention device 100 during renewal work can be easily carried out.

[0059] Furthermore, although the above-described embodiment illustrates an example in which the flood prevention device 100 and the water level detection device 40 are installed in the lower machine room 2, the invention is not limited to this. For example, the flood prevention device and the water level detection device may be installed in an upper machine room located on the upper floor of a building structure, and the flood prevention device may support the upper electrical panel installed in the upper machine room so that it can move vertically.

[0060] In the above-described embodiment, an escalator with steps between them was used as an example of an inclined passenger conveyor. However, the passenger conveyor of the present invention can also be applied to an electric road with multiple steps that do not have steps between them, a so-called moving walkway.

[0061] Furthermore, this method can also be applied to passenger conveyors having a frame in which at least a portion of the inclined section is parallel to the upper horizontal section and the lower horizontal section. In addition, it can be similarly applied to passenger conveyors having a frame in which the extension direction of the upper horizontal section and the lower horizontal section differs as the extension direction of the inclined section curves and changes.

[0062] In this specification, although terms such as "parallel" and "orthogonal" are used, these do not mean only strictly "parallel" and "orthogonal," but may also refer to states that are "approximately parallel" or "approximately orthogonal," which include "parallel" and "orthogonal" and are within a range in which they can perform their functions. [Explanation of symbols]

[0063] 1...Passenger conveyor, 2...Lower machine room, 3...Lower floor, 4...Lower boarding / alighting floor, 5...Steps, 6...Balustrade, 7...Step chain, 8...Lower sprocket, 10...Lower electrical panel, 20...Bracket drive device, 21...Support bracket, 25...Lower electrical panel power cut-off device, 30...Float, 31...Guide rail, 40...Water level detection device, 50...Escalator control panel (passenger conveyor control unit), 51...Signal emitter, 52...Operation control unit, 100, 100B...Flood prevention device, 101...Water level determination unit, 102...Operation control unit, 103...Signal output unit, 200...Maintenance center, M1...Drain outlet, W1...Water surface

Claims

1. In a passenger conveyor installed in a building structure and equipped with multiple steps connected in an endless manner, An electrical panel installed in a machine room provided in the aforementioned building structure, A water level detection device for detecting the water level in the machine room, A flood prevention device that supports the electrical panel so as to be movable in the vertical direction and moves the electrical panel vertically based on the water level signal detected by the water level detection device, A drive mechanism for driving multiple steps, The system includes a passenger conveyor control panel that controls the drive of the aforementioned drive mechanism, The flood prevention device is A support bracket for supporting the electrical panel, A bracket drive device that supports the support bracket so that it can move in the vertical direction, A water level determination unit determines the state of flooding in the machine room based on the water level signal detected by the water level detection device, The system includes an operation control unit that outputs a drive command to the bracket drive device based on the determination result determined by the water level determination unit, The water level determination unit and the operation control unit are provided independently of the passenger conveyor control panel and the electrical panel. A passenger conveyor equipped with a [unclear].

2. Multiple of the aforementioned steps run between the lower and upper floors of the building structure. The aforementioned machine room is a lower machine room located on the lower floor of the aforementioned building structure. The electrical panel is a lower electrical panel installed in the lower machine room. The passenger conveyor according to claim 1.

3. The bracket drive device is installed at the upper end in the vertical direction of the machine room. The passenger conveyor according to claim 1.

4. The electrical panel power supply cutoff device controls the interruption or supply of power to the electrical panel based on a drive command from the operation control unit. The passenger conveyor according to claim 1.

5. In a flood prevention device installed on a passenger conveyor equipped with multiple steps connected in an endless manner, A support mechanism that allows an electrical panel installed in a machine room within a building structure to move vertically, A water level detection unit determines the state of flooding in the machine room based on the water level signal detected by the water level detection device that detects the water level in the machine room, The system includes an operation control unit that outputs a drive command to drive the support mechanism and move the electrical panel vertically based on the determination result determined by the water level determination unit, The water level determination unit and the operation control unit are provided independently of the passenger conveyor control panel and the electrical panel of the passenger conveyor. Flood prevention device.

6. In a flood prevention device installed on a passenger conveyor equipped with multiple steps connected in an endless manner, A guide rail that supports an electrical panel installed in a machine room within a building structure so that it can move vertically, A float is provided in the electrical panel and moves vertically according to the water level in the machine room, A water level detection device for detecting the water level in the machine room, A water level determination unit that determines the state of flooding in the machine room based on the water level signal detected by the water level detection device, The system comprises an operation control unit which performs processing based on the determination result determined by the water level determination unit, The water level determination unit and the operation control unit are provided independently of the passenger conveyor control panel and the electrical panel of the passenger conveyor. Flood prevention device.

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