Passenger conveyor manhole cover fastening system

Abstract

To provide a fixing system of a manhole cover of a passenger conveyor which can improve maintenance inspection workability while securing safety of users.SOLUTION: A fixing system of a manhole cover of a passenger conveyor includes a fixing device 70 for fixing an upper manhole cover 54 blocking an upper side of an upper machine room 52 of an escalator 50 to the upper machine room 52, and a control board 11 which is provided in the upper machine room 52 and switches fixing or release by the fixing device 70, wherein the fixing device 70 has a magnet piece 71 provided in the upper manhole cover 54, a spring 72 which energizes the magnet piece 71 in a direction at which the upper manhole cover 54 is fixed, and an electromagnetic coil 73 which is provided in the upper machine room 52, and the control board 11 acquires positional information of a portable telephone 15 held by the worker W, calculates a distance between the portable telephone 15 and the control board 11, detects proximity of the worker W to the control board 11 and releases fixation of the upper manhole cover 54 by the fixing device 70, when the distance is within a predetermined distance.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a fastening system for fastening manhole covers on passenger conveyors. [Background technology]

[0002] An escalator serving as a passenger conveyor is provided with a control panel that controls each device for operating the escalator. The control panel is provided, for example, in an upper machine room. The upper machine room is an internal space formed at the upper end of a truss. The upper entrance is closed by a manhole cover provided above the upper entrance (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-108833 Summary of the Invention [Problem to be solved by the invention]

[0004] The upper entrances are blocked by the weight of the manhole covers. For example, manhole covers installed outdoors can be lifted up by strong winds. Also, manhole covers installed on Shinkansen platforms can be lifted up by sudden changes in air pressure. One solution to these problems would be to mechanically secure the manhole covers, but this would require them to be released every time maintenance or inspection work is performed, reducing workability.

[0005] Therefore, an object of the present invention is to provide a manhole cover fixing system for a passenger conveyor that can improve maintenance and inspection workability while ensuring the safety of users. [Means for solving the problem]

[0006] The manhole cover fixing system for a passenger conveyor according to the present invention comprises a fixing device that fixes a manhole cover that covers the top of the passenger conveyor's machine room, and a control panel that switches between fixing and releasing the fixing device, wherein the fixing device has a magnetic piece attached to the manhole cover, a spring that biases the magnetic piece in the direction in which the manhole cover is fixed, and an electromagnetic coil attached to a base that supports the manhole cover, and the control panel has a proximity detection unit that acquires location information of a mobile phone carried by a maintenance inspection worker, and detects that the maintenance inspection worker is approaching the control panel if the distance between the mobile phone and the control panel is within a predetermined distance, and a fixation release unit that releases the fixation of the manhole cover if the proximity detection unit detects that the maintenance inspection worker is approaching the control panel.

[0007] The manhole cover fixing system for a passenger conveyor according to the present invention comprises a fixing device that fixes a manhole cover that covers the top of the passenger conveyor's machine room, and a control panel that switches between fixing and releasing the fixing device, wherein the fixing device has a magnetic piece attached to the manhole cover, a spring that biases the magnetic piece in the direction in which the manhole cover is fixed, and an electromagnetic coil attached to a base that supports the manhole cover, and the control panel has a proximity detection unit that detects that a maintenance or inspection worker is approaching the control panel when a specific sound emitted from the speaker of a mobile phone carried by the maintenance or inspection worker is received, and a fixation release unit that releases the fixation of the manhole cover when the proximity detection unit detects that the maintenance or inspection worker is approaching the control panel.

[0008] The manhole cover fixing system for a passenger conveyor according to the present invention comprises a fixing device that fixes a manhole cover that covers the top of the passenger conveyor's machine room, and a control panel that switches between fixing and releasing the fixing device, wherein the fixing device has a magnetic piece provided on the manhole cover, a spring that biases the magnetic piece in the direction in which the manhole cover is fixed, and an electromagnetic coil provided on a base that supports the manhole cover, and the control panel has a proximity detection unit that detects that a maintenance or inspection worker is approaching the control panel when it receives an impact sound when the maintenance or inspection worker hits the manhole cover, and a fixation release unit that releases the fixation of the manhole cover when the proximity detection unit detects that the maintenance or inspection worker is approaching the control panel.

[0009] In the passenger conveyor manhole cover fixing system of the present invention, it is preferable that the control panel is provided in a machine room, a microphone is provided in the machine room, and the proximity detection unit acquires the specific sound or impact sound by the microphone.

[0010] In the passenger conveyor manhole cover fixing system of the present invention, it is preferable that the control panel further has a fixing section that fixes the manhole cover with a fixing device when operation of all equipment on the passenger conveyor is restored and normal operation continues for a predetermined time. [Effects of the Invention]

[0011] The manhole cover fixing system for a passenger conveyor of the present invention can improve the ease of maintenance and inspection work while ensuring the safety of passengers. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a schematic diagram showing an escalator according to an embodiment. [Figure 2] FIG. 2 is a schematic diagram showing a locking device. [Figure 3] FIG. 1 is a block diagram illustrating a fastening system according to a first embodiment. [Figure 4] FIG. 10 is a block diagram showing a fastening system according to a second embodiment. [Figure 5] FIG. 10 is a block diagram illustrating a fastening system according to a third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0013] An example of an embodiment of the present invention will be described in detail below. In the following description, specific shapes, materials, directions, numerical values, etc. are examples for facilitating understanding of the present invention, and can be appropriately changed according to the application, purpose, specifications, etc.

[0014] For example, as shown in Fig. 3, the fastening system 10 is a system for fastening an upper manhole cover 54 that closes the top of an upper machine room 52 of an escalator 50 serving as a passenger conveyor. As will be described in detail later, the fastening system 10 can improve the ease of maintenance and inspection work while ensuring the safety of passengers.

[0015] [escalator] An escalator 50 according to an embodiment will be described with reference to FIG.

[0016] Escalator 50 as a passenger conveyor has truss 51 that supports the weight and load of escalator 50, upper machine room 52 provided at the upper end of truss 51, upper boarding / alighting entrance 53 provided above upper machine room 52, upper manhole cover 54 provided at upper boarding / alighting entrance 53 and closing the top of upper machine room 52, lower machine room 56 provided at the lower end of truss 51, lower boarding / alighting entrance 57 provided above lower machine room 56, and lower manhole cover 58 provided at lower boarding / alighting entrance 57 and closing the top of lower machine room 56. Upper manhole cover 54 is fixed to upper machine room 52 by fixing device 70, the details of which will be described later.

[0017] A plurality of steps 61 that move cyclically between an upper boarding / alighting entrance 53 and a lower boarding / alighting entrance 57 are supported on the truss 51. A pair of balustrades 62 are provided on both sides in the width direction of the truss 51. A moving handrail 63 that moves in synchronization with the steps 61 is provided on the outer periphery of each balustrade 62.

[0018] Inside upper machine room 52 are provided a drive machine (not shown) that generates the drive force to move each step 61 and moving handrail 63, a power transmission device (not shown) that transmits the drive force of the drive machine to the steps 61 and moving handrail 63, and a control panel 11 that controls the operation of each device of escalator 50, such as the drive machine. Also, inside upper machine room 52 may be provided a microphone 26 that picks up abnormal sounds from each device of escalator 50, such as the drive machine.

[0019] [Fixing device] The fixing device 70 will be described with reference to FIG.

[0020] The fixing device 70 fixes the upper manhole cover 54 to the L-angle 55 serving as the base of the upper machine room 52. A pair of fixing devices 70 are provided on the upper manhole cover 54. The fixing device 70 has a magnet piece 71 provided on the upper manhole cover 54, a spring 72 that biases the magnet piece 71 in a direction in which the upper manhole cover 54 is fixed to the L-angle 55 serving as the base of the upper machine room 52, and an electromagnetic coil 73 provided on the L-angle 55 serving as the base of the upper machine room 52. The electromagnetic coil 73 is connected to the control panel 11.

[0021] In the fixing device 70, when the electromagnetic coil 73 is energized by the control panel 11, the magnet piece 71 is magnetically attracted to the electromagnetic coil 73 in a repulsive direction, and the upper manhole cover 54 is released from the L-angle 55. On the other hand, in the fixing device 70, when the electromagnetic coil 73 is not energized by the control panel 11, the magnet piece 71 is urged by the spring 72, and the upper manhole cover 54 is fixed to the L-angle 55.

[0022] [First embodiment of fastening system] The fastening system 10 of the first embodiment will be described with reference to FIG.

[0023] In the fixing system 10, details will be described later, the control panel 11 acquires location information from the mobile phone 15 carried by the worker W, thereby detecting that the worker W is approaching the control panel 11, and the fixing device 70 releases the fixing of the upper manhole cover 54. The fixing system 10 can improve the ease of maintenance and inspection work while ensuring the safety of users.

[0024] The control panel 11 has a CPU (Central Processing Unit) which is an arithmetic processing unit, and memory units such as RAM (Random Access Memory) and ROM (Read Only Memory), and performs signal processing according to a program pre-stored in the ROM while utilizing the temporary storage function of the RAM.

[0025] The control panel 11 has a proximity detection unit 12 and an unfixing unit 13, each of which will be described in detail later. The proximity detection unit 12 and the unfixing unit 13 are realized by the CPU executing a program stored in the ROM or RAM.

[0026] The proximity detection unit 12 acquires location information of the mobile phone 15 carried by the worker W, calculates the distance between the mobile phone 15 and the control panel 11, and if the distance is within a predetermined distance, detects that the worker W is close to the control panel 11, and if the distance is greater than the predetermined distance, detects that the worker W is away from the control panel 11.

[0027] The proximity detection unit 12 may acquire the location information of the mobile phone 15 by a global positioning system (GPS) installed in the mobile phone 15 carried by the worker W. Alternatively, the proximity detection unit 12 may acquire the location information of the mobile phone 15 by a beacon installed in the mobile phone 15 carried by the worker W.

[0028] When the proximity detection unit 12 detects that the worker W is approaching the control panel 11, the fixing release unit 13 releases the fixation of the upper manhole cover 54 using the fixing device 70, and when the proximity detection unit 12 detects that the worker W is moving away from the control panel 11, the fixing release unit 13 fixes the upper manhole cover 54 using the fixing device 70.

[0029] [Second embodiment of fastening system] A fastening system 20 according to a second embodiment will be described with reference to FIG.

[0030] In the fixing system 20, details will be described later, a specific sound transmitted from the mobile phone 25 carried by the worker W is received by the control panel 21, which detects that the worker W is approaching the control panel 21, and the fixing device 70 releases the fixing of the upper manhole cover 54. The fixing system 10 can improve the ease of maintenance and inspection work while ensuring the safety of users.

[0031] The control panel 21 has a CPU, which is an arithmetic processing unit, and storage units such as RAM and ROM, and performs signal processing according to a program stored in advance in the ROM while utilizing the temporary storage function of the RAM.

[0032] The control panel 21 has a proximity detection unit 22, an unfixing unit 23, and a fixing unit 24, each of which will be described in detail later. The proximity detection unit 22, the unfixing unit 23, and the fixing unit 24 are realized by the CPU executing a program stored in the ROM or RAM.

[0033] When proximity detection unit 22 acquires a specific sound emitted from mobile phone 25 carried by worker W, it detects that worker W is approaching control panel 11. Proximity detection unit 12 may acquire the sound using microphone 26 that picks up abnormal sounds from each piece of equipment of escalator 50, such as the drive machine, provided in upper machine room 52. Note that worker W needs to keep emitting the specific sound from mobile phone 25 carried by him / her when heading towards escalator 50.

[0034] When proximity detection unit 12 detects that worker W is approaching control panel 11, fixing release unit 23 releases the fixing of upper manhole cover 54 by fixing device 70. When operation of all equipment of escalator 50 is restored after maintenance and inspection work is completed and normal operation has continued for a predetermined time, fixing unit 24 fixes upper manhole cover 54 by fixing device 70. As a result, when maintenance and inspection work is completed and normal operation begins, upper manhole cover 54 is automatically fixed by fixing device 70

[0035] [Securing system of the third embodiment] A fixing system 30 according to a third embodiment will be described with reference to FIG.

[0036] In fixing system 30, details will be described later, when worker W hits upper manhole cover 54 that blocks upper machine room 52 of escalator 50, the sound of the impact is received by control panel 31, which detects that worker W is approaching control panel 31, and fixes upper manhole cover 54 using fixing device 70. Fixing system 10 can improve the ease of maintenance and inspection work while ensuring the safety of passengers.

[0037] The control panel 31 includes a CPU, which is a processing unit, RAM, ROM, and The signal processing is performed in accordance with a program stored in advance in the ROM while utilizing the temporary storage function of the RAM.

[0038] The control panel 31 has a proximity detection unit 32, an unfixing unit 33, and a fixing unit 34, each of which will be described in detail later. The proximity detection unit 32, the unfixing unit 33, and the fixing unit 34 are realized by the CPU executing a program stored in the ROM or RAM.

[0039] When proximity detection unit 32 acquires the sound of an impact made when upper manhole cover 54 that closes upper machine room 52 of escalator 50 is struck, it detects that worker W is approaching control panel 31. Proximity detection unit 32 may acquire the sound by microphone 26 that picks up abnormal sounds from each piece of equipment of escalator 50, such as the drive machine, provided in upper machine room 52.

[0040] When proximity detection unit 32 detects that worker W is approaching control panel 31, fixing release unit 33 releases the fixing of upper manhole cover 54 by fixing device 70. When operation of all equipment of escalator 50 is restored after maintenance and inspection work is completed and normal operation has continued for a predetermined time, fixing unit 34 fixes upper manhole cover 54 by fixing device 70.

[0041] [others] The present disclosure is further described by the following embodiments. Configuration 1: A manhole cover fixing system for a passenger conveyor, comprising: a fixing device that fixes a manhole cover that covers the top of the machine room of the passenger conveyor; and a control panel that switches between fixing and releasing the fixing device, wherein the fixing device has a magnetic piece attached to the manhole cover, a spring that urges the magnetic piece in the direction in which the manhole cover is fixed, and an electromagnetic coil attached to a base that supports the manhole cover, and the control panel has: a proximity detection unit that acquires location information of a mobile phone carried by the maintenance and inspection worker, and detects that the maintenance and inspection worker is approaching the control panel if the distance between the mobile phone and the control panel is within a predetermined distance, and a fixation release unit that releases the fixation of the manhole cover if the proximity detection unit detects that the maintenance and inspection worker is approaching the control panel. Configuration 2: A manhole cover fixing system for a passenger conveyor, comprising: a fixing device that fixes a manhole cover that covers the top of the machine room of the passenger conveyor; and a control panel that switches between fixing and releasing the fixing device, wherein the fixing device has a magnetic piece attached to the manhole cover, a spring that urges the magnetic piece in the direction in which the manhole cover is fixed, and an electromagnetic coil attached to a base that supports the manhole cover, and the control panel has a proximity detection unit that detects that the maintenance and inspection worker is approaching the control panel when a specific sound emitted from a speaker of a mobile phone carried by the maintenance and inspection worker is received, and a fixation release unit that releases the fixation of the manhole cover when the proximity detection unit detects that the maintenance and inspection worker is approaching the control panel. Configuration 3: A manhole cover fixing system for a passenger conveyor, comprising: a fixing device that fixes a manhole cover that covers the top of the machine room of the passenger conveyor; and a control panel that switches between fixing and releasing the fixing device, wherein the fixing device has a magnetic piece provided on the manhole cover, a spring that urges the magnetic piece in the direction in which the manhole cover is fixed, and an electromagnetic coil provided on a base that supports the manhole cover, and the control panel has: a proximity detection unit that, when receiving an impact sound when the maintenance or inspection worker hits the manhole cover, detects that the maintenance or inspection worker is in proximity to the control panel, and a fixation release unit that releases the fixation of the manhole cover when the proximity detection unit detects that the maintenance or inspection worker is in proximity to the control panel. Configuration 4: The manhole cover fixing system for a passenger conveyor according to Configuration 2 or 3, wherein the control panel is provided in a machine room, a microphone is provided in the machine room, and the proximity detection unit acquires the specific sound or the impact sound using the microphone. Configuration 5: A manhole cover fixing system for a passenger conveyor described in any one of configurations 2 to 4, wherein the control panel further has a fixing section that fixes the manhole cover using the fixing device when operation of all equipment of the passenger conveyor is restored and normal operation continues for a predetermined time.

[0042] It should be noted that the present invention is not limited to the above-described embodiment and its modifications, and various changes and modifications are possible within the scope of the claims of this application. [Explanation of symbols]

[0043] 10 fixing system, 11 control panel, 12 proximity detection unit, 13 fixing release unit, 15 mobile phone, 20 fixing system, 21 control panel, 22 proximity detection unit, 23 fixing release unit, 24 fixing unit, 25 mobile phone, 26 microphone, 30 fixing system, 31 control panel, 32 proximity detection unit, 33 fixing release unit, 34 fixing unit, 50 escalator (passenger conveyor), 51 truss, 52 upper machine room, 53 upper entrance / exit, 54 upper manhole cover, 55 L-angle, 56 lower machine room, 57 lower entrance / exit, 58 lower manhole cover, 61 step, 62 handrail, 63 moving handrail, 70 fixing device, 71 magnet piece, 72 spring, 73 electromagnetic coil, W worker (maintenance and inspection worker)

Claims

1. 1. A fastening system for a manhole cover of a passenger conveyor, comprising: A fixing device for fixing a manhole cover that closes the top of the machine room of the passenger conveyor, and a control panel for switching between fixing and releasing by the fixing device, The fixing device includes a magnet piece provided on the manhole cover, a spring that biases the magnet piece in a direction in which the manhole cover is fixed, and an electromagnetic coil provided on a base that supports the manhole cover, The control panel has a proximity detection unit that acquires location information of a mobile phone carried by a maintenance and inspection worker, and detects that the maintenance and inspection worker is approaching the control panel when the distance between the mobile phone and the control panel is within a predetermined distance, and a fixation release unit that releases the fixation of the manhole cover when the proximity detection unit detects that the maintenance and inspection worker is approaching the control panel. Passenger conveyor manhole cover fastening system.

2. 1. A fastening system for a manhole cover of a passenger conveyor, comprising: A fixing device for fixing a manhole cover that closes the top of the machine room of the passenger conveyor, and a control panel for switching between fixing and releasing by the fixing device, The fixing device includes a magnet piece provided on the manhole cover, a spring that biases the magnet piece in a direction in which the manhole cover is fixed, and an electromagnetic coil provided on a base that supports the manhole cover, The control panel has a proximity detection unit that detects that a maintenance or inspection worker is approaching the control panel when a specific sound transmitted from a speaker of a mobile phone carried by the maintenance or inspection worker is received, and a fixation release unit that releases the fixation of the manhole cover when the proximity detection unit detects that the maintenance or inspection worker is approaching the control panel. Passenger conveyor manhole cover fastening system.

3. 1. A fastening system for a manhole cover of a passenger conveyor, comprising: A fixing device for fixing a manhole cover that closes the top of the machine room of the passenger conveyor, and a control panel for switching between fixing and releasing by the fixing device, The fixing device includes a magnet piece provided on the manhole cover, a spring that biases the magnet piece in a direction in which the manhole cover is fixed, and an electromagnetic coil provided on a base that supports the manhole cover, The control panel has a proximity detection unit that detects that the maintenance and inspection worker is approaching the control panel when an impact sound is received when the maintenance and inspection worker hits the manhole cover, and a fixation release unit that releases the fixation of the manhole cover when the proximity detection unit detects that the maintenance and inspection worker is approaching the control panel. Passenger conveyor manhole cover fastening system.

4. 3. A passenger conveyor manhole cover fastening system according to claim 2, The control panel is provided in a machine room, A microphone is provided in the machine room, the proximity detection unit acquires the specific sound by the microphone; Passenger conveyor manhole cover fastening system.

5. A manhole cover fixing system for a passenger conveyor according to claim 3, comprising: The control panel is provided in a machine room, A microphone is provided in the machine room, the proximity detection unit acquires the impact sound by the microphone; Passenger conveyor manhole cover fastening system.

6. A fastening system for a manhole cover of a passenger conveyor according to claim 2 or 3, The control panel further includes a fixing unit that fixes the manhole cover with the fixing device when operation of all the equipment of the passenger conveyor is restored and normal operation continues for a predetermined time. Passenger conveyor manhole cover fastening system.

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