JP2020109033A - Passenger conveyor - Google Patents

Abstract

To provide a passenger conveyor capable of achieving a low voltage by reducing a total length of a cable connecting a safety apparatus and a control device.SOLUTION: A passenger conveyor has a truss, a footstep circularly moving in the truss, a driving gear to drive the footstep, a footstep chain to transfer driving force from the driving gear to the footstep, guide rails on which the footstep runs, skirt guards provided on both sides of the footstep, handrails stood on the skirt guard, handrail rails each provided to an outer periphery of the handrail, handrail belts each circularly moving along the handrail rail, inlet parts 48 of gateways of the handrail belts, and radio transmitters. The passenger conveyor has a safety apparatus 72 to transmit an operation signal using the radio transmitter when it detects an abnormality, and the radio receiver to receive the operation signal from the safety apparatus 72. The passenger conveyor includes the receiver to receive the operation signal and to transmit a stopping signal which stops the driving gear, and a control device connected to the receiver via a cable, receives the stopping signal from the receiver, and to stop the driving gear.SELECTED DRAWING: Figure 2

Description

Embodiments of the present invention relate to passenger conveyors.

The passenger conveyor is provided with safety devices at various places, which are connected in series by a cable and connected to the control device. Therefore, the total length of the cable becomes long and the voltage drop becomes large, so that a high voltage is required.

JP, 2017-114584, A

In view of the above problems, it is an object of the embodiments of the present invention to provide a passenger conveyor that can shorten the total length of a cable that connects a safety device and a control device and reduce the voltage.

An embodiment of the present invention is a truss, a step which is endlessly connected and circulates in the truss, a drive device which drives the step, and a step chain which transmits a driving force from the drive device to the step, Guide rails on which the steps run, skirt guards provided on both sides of the steps, balustrades standing on the skirt guards, handrail rails provided on the outer periphery of the balustrade, and handrail rails. A handrail belt that circulates along the skirt guard, an inlet provided on the skirt guard that is the entrance and exit of the handrail belt, and a wireless transmitter. When an abnormality is detected, an operation signal is output using the wireless transmitter. A safety device for transmitting the operation signal, a wireless receiver for receiving the operation signal from the safety device, and a receiver for transmitting a stop signal for stopping the drive device when the operation signal is received, and the receiver. A passenger conveyor having a control device that is connected by a cable and that controls the drive device to stop when the stop signal is received from the receiver.

The explanatory view seen from the side of the escalator which shows one embodiment of the present invention. The perspective view of the escalator which shows one Embodiment of this invention. The block diagram explaining the electric composition in the escalator of one embodiment.

Hereinafter, the escalator 10 of one embodiment of the present invention will be described with reference to FIGS. 1 to 3.

(1) Escalator 10
The structure of the escalator 10 will be described with reference to FIG. FIG. 1 is an explanatory view of the escalator 10 viewed from the side.

A truss 12, which is a framework of the escalator 10, is supported by using support angles 2 and 3 across the upper floor and the lower floor of the building 1.

Inside the machine room 14 on the upper floor at the upper end of the truss 12, there are provided a drive device 18 for traveling the steps 30, a pair of left and right drive sprockets 24, 24, and a pair of left and right belt sprockets 27, 27. The drive device 18 includes a motor 20 including an induction motor (induction motor), a speed reducer, an output sprocket attached to an output shaft of the speed reducer, a drive chain 22 driven by the output sprocket, and a rotation of the motor 20. And a disc brake that holds the stopped state. The drive chain 22 causes the drive sprocket 24 to rotate. The pair of left and right drive sprockets 24, 24 and the pair of left and right belt sprockets 27, 27 are connected by a connecting belt (not shown) and rotate synchronously. Further, inside the machine room 14 on the upper floor side, a control device 50 for controlling the motor 20, the disc brake and the like is provided.

A driven sprocket 26 is provided inside the lower floor machine room 16 at the lower end of the truss 12. Between the drive sprocket 24 on the upper floor side and the driven sprocket 26 on the lower floor side, a pair of left and right endless step chains 28, 28 are bridged. That is, the wheels 301 of the plurality of steps 30 are attached to the pair of left and right step chains 28, 28 at equal intervals. The wheel 301 of the step 30 runs along a guide rail (not shown) fixed to the truss 12, and engages with a recess in the outer peripheral portion of the drive sprocket 24 and a recess in the outer peripheral portion of the driven sprocket 26 to move up and down. Invert. Further, the wheels 302 travel on the guide rails 25 fixed to the truss 12.

A pair of left and right skirt guards 44, 44 and a pair of left and right balustrades 36, 36 are erected on both left and right sides of the truss 12. A handrail rail 39 is provided above the balustrade 36, and the handrail belt 38 moves along the handrail rail 39. The front skirt guard 40 on the upper floor side is provided on the lower front side of the parapet 36 on the upper floor side, and the front skirt guard 42 on the lower floor side is provided on the lower front side on the lower floor side. Inlet portions 46 and 48, which are the entrances and exits of the handrail belt 38, respectively project. The skirt guard 44 is provided below the side surface of the balustrade 36, and the step 30 runs between the pair of left and right skirt guards 44, 44. Operation panels 52 and 56 and speakers 54 and 58 are provided on the inner surfaces of the skirt guards 44 on the upper and lower floors, respectively.

The handrail belt 38 penetrates into the front skirt guard 40 from the inlet portion 46 on the upper floor side, is stretched around the belt sprocket 27 via the guide roller group 64, and then is passed through the guide roller group 66. It moves inside and appears outside the front skirt guard 42 from the inlet 48 on the lower floor side. Then, the handrail belt 38 moves in synchronization with the step 30 as the belt sprocket 27 rotates together with the drive sprocket 24. Further, it has a pressing member 68 for pressing the handrail belt 38 traveling on the rotating belt sprocket 27.

At the entrance/exit on the ceiling of the machine room 14 on the upper floor, a board/board 32 on the upper floor is provided horizontally, and the entrance/exit on the ceiling of the machine room 16 on the lower floor has a lower floor. The boarding plate 34 is horizontally provided. A comb tooth-shaped comb 60 is provided at the tip of the boarding/alighting plate 32, and the step 30 advances or enters from the comb 60. A comb-shaped comb 62 is also provided on the boarding/alighting plate 34.

The inlet portions 46 and 48 are provided with safety devices 70 and 72 that detect that an object is caught.

Further, the machine room 14 is provided with a receiver 74 for receiving the operation signal transmitted by the safety device 70, and the machine room 16 is provided with a receiver 76 for receiving the operation signal transmitted by the safety device 72. There is.

(2) Electrical Configuration of Escalator 10 The electrical configuration of the escalator 10 will be described with reference to FIGS. 2 and 3.

The safety devices 70 and 72 include a switch (not shown), piezoelectric actuators 70a and 72a for converting mechanical energy applied by the switch into electrical energy, and an operation signal indicating that the safety devices 70 and 72 detect an abnormality. Wireless transmitters 70b and 72b for transmitting the electric power, and thermo modules 70c and 72c that generate heat using the electric energy obtained by the piezoelectric actuators 70a and 72a.

The receivers 74, 76 have wireless receivers 74a, 76a for receiving the actuation signals sent from the safety devices 70, 72, and thermographs 74b, 76b for detecting the temperature changes of the thermo modules 70c, 72c, It is connected to the control device 50 by a cable 82.

The thermo modules 70c and 72c are arranged in the truss 12, and are connected to the piezoelectric actuators 70a and 72a provided in the inlet portions 46 and 48 by the cable 84. Therefore, the heat generation of the thermo modules 70c and 72c can be detected by the thermographs 74b and 76b of the receivers 74 and 76 provided in the truss 12.

The drive device 18, operation panels 52 and 56, and speakers 54 and 58 are also connected to the control device 50.

(3) Case where Object is Caught in Inlet Portion 48 In the above embodiment, a case where an object is caught in the inlet portion 48 will be described with reference to FIGS.

When an object is caught in the inlet portion 48, a switch (not shown) of the safety device 72 is pressed and mechanical energy is applied to the piezoelectric actuator 72a. Mechanical energy is converted into electrical energy by the piezoelectric actuator 72a, and the safety device 72 uses the electrical energy to transmit an actuation signal indicating that the safety device 72 has detected an abnormality from the wireless transmitter 72b.

Then, the receiver 76 receives the operation signal transmitted from the safety device 72 by the wireless receiver 76 a, and transmits the stop signal for stopping the drive device 18 to the control device 50.

The control device 50, to which the stop signal from the receiver 76 is input, stops the drive device 18 and issues a warning using the speakers 54 and 58.

Further, the safety device 72 causes the thermo module 72c to generate heat using the electric energy converted by the piezoelectric actuator 72a.

Then, even if the wireless receiver 76a of the receiver 76 does not receive the operation signal transmitted from the safety device 72, if the thermography 76b connected to the receiver 76 as a backup function detects this heat generation, driving is performed. A stop signal for stopping the device 18 is transmitted to the control device 50.

The control device 50 to which the signal from the receiver 76 is input stops the drive device 18 and notifies the warning using the speakers 54 and 58.

(4) Effects According to the present embodiment, the safety devices 70 and 72 and the receivers 74 and 76 are wirelessly connected to each other, so that the cables between the safety devices 70 and 72 and the receivers 74 and 76 are connected. It can be omitted, the total length of the cable can be shortened, and the voltage can be reduced.

When the safety devices 70 and 72 detect an abnormality, the thermo modules 70c and 72c included in the safety devices 70 and 72 generate heat, and the heat generation is detected by the thermographs 74b and 76b included in the receivers 74 and 76. As a result, even if a failure occurs in the wireless communication between the safety devices 70 and 72 and the receivers 74 and 76, the thermo modules 70c and 72c and the thermographs 74b and 76b function as a backup, and the receiver 74 , 76 can inform the control device 50 that the safety devices 70, 72 have detected an abnormality, and stop the operation of the escalator 10.

Example of change

In the above embodiment, an example in which the safety devices 70 and 72 detect that an object is caught in the inlet portions 46 and 48 has been described, but the invention is not limited to this, and an object is caught between the skirt guard 44 and the step 30. It may be one that detects that the step chain 28 is cut, or one that detects that the step 30 is lifted from the guide rail 25. It may be one that detects that the stop button is pressed.

In the above embodiment, as an example, the safety devices 70 and 72 have the thermo modules 70c and 72c and the receivers 74 and 76 have the thermographs 74b and 76b as backups. However, the safety devices 70 and 72 are infrared irradiation devices. And the receivers 74 and 76 may have a current collector that detects infrared rays.

When the safety devices 70 and 72 detect an abnormality, the infrared irradiation device emits infrared rays, and when the current collectors of the receivers 74 and 76 detect this, the safety devices 70 and 72 cause the receivers 74 and 76 to detect A signal indicating that an abnormality has been detected is transmitted to control device 50. As a result, even if a failure occurs in the wireless communication between the safety devices 70 and 72 and the receivers 74 and 76, the infrared irradiation device and the current collector function as a backup, and the receivers 74 and 76 are The fact that the safety devices 70 and 72 have detected an abnormality can be transmitted to the control device 50, and the operation of the escalator 10 can be stopped.

When the escalator 10 is managed by an external management device, the receivers 74 and 76 of the escalator 10 have a second wireless transmitter, and the second wireless transmitter sends a stop signal to the management device outside the escalator 10. It may be transmitted.

Further, in the above-described embodiment, the description is applied to the escalator 10, but it may be applied to a moving sidewalk instead.

Although one embodiment of the present invention has been described above, this embodiment is presented as an example and is not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the scope of equivalents thereof.

1... Building, 10... Escalator, 12... Truss, 30... Steps, 36... Parapet, 38... Handrail belt, 39... Handrail rail, 50... Control device, 70... Safety device, 70a... Piezoelectric actuator, 70b... Wireless transmitter, 70c... Thermo module, 72... Safety device, 72a... Piezoelectric actuator, 72b... Radio transmitter, 72c... Thermo module, 74... Receiver, 74a... Radio receiver, 74b... Thermography, 76... Receiver, 76a... Radio receiver, 76b...・Thermograph, 82... Cable, 84... Cable

Embodiments of the present invention, a truss, steps that are endlessly connected and circulates in the truss, a drive device that drives the steps, and a step chain that transmits a driving force from the drive device to the steps, Guide rails on which the steps run, skirt guards provided on both sides of the steps, balusters installed upright on the skirt guards, handrail rails provided on the outer periphery of the balustrade, and handrail rails. A handrail belt that circulates along the inlet, an inlet portion that is provided in the skirt guard and that is an entrance and an exit of the handrail belt, a piezoelectric actuator that converts mechanical energy caused by an abnormality to electrical energy, and a thermo module. When, and a radio transmitter, comprising: a safety device for transmitting an activation signal using said radio transmitter and detects an abnormality, and a wireless receiver for receiving the actuation signal from the safety device, a thermography When the operation signal is received, a receiver for transmitting a stop signal for stopping the drive device is connected to the receiver by a cable, and a control for stopping the drive device when receiving the stop signal from the receiver is performed. possess a control device that performs, when the safety device detects an abnormality, using the electrical energy which the piezoelectric actuator is issued, the thermo-module is heated, the receiver, the actuating said safety device transmits A passenger conveyor that sends the stop signal to the controller when the thermography detects a temperature change in the thermo module, even if no signal is received .

Claims (10)

With a truss
Steps that are connected endlessly and circulate in the truss,
A drive device for driving the steps,
A step chain that transmits a driving force from the drive device to the step,
A guide rail on which the steps run,
Skirt guards provided on both sides of the steps,
A balustrade erected on the skirt guard,
A handrail rail provided on the outer periphery of the balustrade,
A handrail belt that circulates along the handrail rail,
An inlet portion provided on the skirt guard, which is an entrance/exit of the handrail belt,
A safety device having a wireless transmitter and transmitting an operation signal using the wireless transmitter when an abnormality is detected,
A wireless receiver that receives the actuation signal from the safety device, and a receiver that, when receiving the actuation signal, transmits a stop signal that stops the drive device;
A control device that is connected to the receiver by a cable and that controls the drive device to stop when the stop signal is received from the receiver;
Passenger conveyor. The passenger conveyor according to claim 1, wherein the safety device includes a piezoelectric actuator that converts mechanical energy generated by occurrence of an abnormality into electrical energy. The safety device has a thermo module,
The receiver has a thermography,
When the safety device detects an abnormality, the thermo module generates heat using the electric energy generated by the piezoelectric actuator,
3. The receiver transmits the stop signal to the control device when the thermography detects a temperature change of the thermo module, even when the receiver does not receive the actuation signal transmitted by the safety device. Passenger conveyor described in. The safety device has an infrared irradiation device,
The receiver has a current collector,
When the safety device detects an abnormality, using the electrical energy emitted by the piezoelectric actuator, the infrared irradiation device emits infrared rays,
The receiver transmits the stop signal to the control device when the current collector detects the infrared light emitted by the infrared irradiation device, even when the operation signal transmitted by the safety device is not received. The passenger conveyor according to claim 2. The passenger conveyor according to claim 1, wherein the safety device detects that an object is caught between the step and the skirt guard. The passenger conveyor according to claim 1, wherein the safety device detects that the step chain has been broken. The passenger conveyor according to claim 1, wherein the safety device detects that an object is caught in the inlet portion. The passenger conveyor according to claim 1, wherein the safety device detects that the step is lifted from the guide rail. The passenger conveyor according to claim 1, wherein the safety device detects that an emergency stop button has been pressed. The receiver has a second wireless transmitter, and, when receiving the operation signal from the safety device, transmits the stop signal to an external management device of the passenger conveyor using the second wireless transmitter. The passenger conveyor according to claim 1.

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