JP2020001873A - Passenger conveyor - Google Patents

Abstract

To provide a passenger conveyor capable of detecting a state in which the driving force of a handrail belt is reduced.SOLUTION: A passenger conveyor includes: handrail loading means that is provided on a traveling passage of a handrail belt 38 to apply constant load on the traveling handrail belt; speed detection means for detecting the belt speed of the handrail belt 38; and control means in which a speed detection device 126 detects the belt speed when the constant load is applied to the traveling handrail belt 38 by a handrail loading device 88 so as to execute a handrail driving force confirmation mode by which a warning signal is output when the belt speed becomes lower than a specified value or more.SELECTED DRAWING: Figure 3

Description

  Embodiments of the present invention relate to a passenger conveyor.

  In a passenger conveyor such as an escalator and a moving sidewalk, even if a certain resistance is applied to the traveling of the handrail belt, the handrail belt needs to travel at the same traveling speed in synchronization with the steps. For this reason, conventionally, in this confirmation test, while performing a test operation at the time of periodic inspection, the worker stands at the getting on and off position, pulls the handrail belt with a certain resistance to the opposite side to the traveling direction, and the traveling of the handrail belt is It was done by confirming that it would not stop.

JP 2012-218914 A JP 2018-008757 A

  As mentioned above, the worker manually checks the driving force of the handrail belt during the periodic inspection, but if the driving force of the handrail belt decreases by the next inspection date, it should be checked. There was a problem that we could not know.

  In view of the above problems, an embodiment of the present invention aims to provide a passenger conveyor capable of detecting a state in which the driving force of a handrail belt is reduced.

  The embodiment of the present invention includes a truss, a plurality of steps arranged on the truss and connected endlessly, a handrail belt, a driving means for running the steps at a predetermined running speed, and Handrail driving means for driving a handrail belt in synchronization with the steps, handrail loading means disposed on a traveling path of the handrail belt and applying a constant load to the running handrail belt; Speed detection means for detecting the belt speed of the rubbing belt, and the belt speed when a constant load is applied to the handrail belt during traveling by the handrail load means is detected by the speed detection means, and is equal to or greater than a specified value. And control means for executing a handrail driving force confirmation mode for outputting a warning signal when the belt speed becomes low.

FIG. 2 is an explanatory side view of the escalator of the embodiment. Explanatory drawing of the part which drives a handrail belt. The side view of a handrail drive device and a speed detection device. The block diagram of an escalator. 5 is a flowchart of a handrail driving force confirmation mode.

  Hereinafter, an escalator 10 which is a passenger conveyor according to an embodiment of the present invention will be described with reference to FIGS.

(1) Escalator 10
The structure of the escalator 10 will be described with reference to FIG. FIG. 1 is an explanatory diagram of the escalator 10 viewed from a side. As shown in FIG. 1, 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, a driving device 18 for running the steps 30, a pair of left and right main driving sprockets 24, 24, and a pair of left and right handrail sprockets 27, 27 are provided. I have. The drive device 18 includes a motor 20, a speed reducer, an output sprocket mounted on an output shaft of the speed reducer, a drive chain 22 driven by the output sprocket, and a motor that stops the rotation of the motor 20 and stops. And a disc brake for holding the brake. The drive chain 22 causes the main drive sprocket 24 to rotate. The pair of left and right main drive sprockets 24, 24 and the pair of left and right handrail sprockets 27, 27 are connected by a connection belt (not shown) and rotate in synchronization. A control unit 50 for controlling the motor 20, the disc brake, and the like is provided inside the machine room 14 on the upper floor side.

  A driven sprocket 26 is provided in the lower machine room 16 at the lower end of the truss 12. A pair of left and right endless step chains 28, 28 is bridged between the main drive sprocket 24 on the upper floor and the driven sprocket 26 on the lower floor. That is, the wheels 301 of the plurality of steps 30 are attached to the pair of left and right step chains 28 at equal intervals. The wheels 301 of the steps 30 travel along guide rails (not shown) fixed to the truss 12, and engage with the concave portions on the outer peripheral portion of the main drive sprocket 24 and the concave portions on the outer peripheral portion of the driven sprocket 26 to move up and down. Flip to The wheels 302 run on the guide rail 25 fixed to the truss 12.

  On both left and right sides of the truss 12, a pair of left and right balustrades 36, 36 are erected. A handrail rail 39 is provided above the balustrade 36, and an endless handrail belt 38 moves along the handrail rail 39. A front skirt guard 40 on the upper floor is provided in the lower front part of the upper floor of the balustrade 36, and a front skirt guard 42 on the lower floor is provided in the lower front part of the lower floor. Inlet portions 46 and 48, which are entrances and exits of the handrail belt 38, protrude, respectively.

  A skirt guard 44 is provided at the lower side 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 upper and lower floor skirt guards 44, respectively.

  The pair of left and right handrail belts 38 respectively enter the front skirt guard 40 from the upper inlet 46 and each handrail belt 38 is driven based on a handrail drive device 70 driven by the handrail sprocket 27. Then, it moves inside the skirt guard 44 and appears outside the front skirt guard 42 from the inlet 48 on the lower floor side. A handrail load device 88 for measuring the running resistance of the handrail belt 38 is provided inside the skirt guard 44. The handrail drive device 70 and the handrail load device 88 will be described later in detail.

  At the entrance on the ceiling of the machine room 14 on the upper floor, an upper floor board 32 is provided horizontally, and at the entrance on the ceiling of the machine room 16 on the lower floor, Is provided horizontally. A comb-shaped comb 60 is provided at the end of the board 32, and the step 30 advances or enters from the comb 60. Further, a comb-shaped comb 62 is provided on the boarding / alighting board 34.

  Optical sensors 140 are provided on the side of the front skirt guard 40 on the upper floor of the escalator 10 and on the side of the front skirt guard 42 on the lower floor. The optical sensor 140 detects a passenger trying to get on and off the escalator 10, and outputs a detection signal to the control unit 50 when the optical sensor 140 detects a passenger.

(2) Handrail drive device 70
Next, a handrail driving device 70 for moving the handrail belt 38 will be described with reference to FIGS. As shown in FIG. 1, the handrail drive device 70 is provided inside a deck surrounded by the skirt guard 44 near the upper floor, and is provided on a substrate 86 fixed to the truss 12, as shown in FIG. Has been.

  The handrail drive device 70 includes a handrail drive roller 72, a handrail driven roller 74, a drive sprocket 76, and an auxiliary sprocket 78, as shown in FIG.

(2-1) Handrail drive roller 72
As shown in FIG. 3, the four handrail drive rollers 72 are rotatably provided on the substrate 86 in a line below the running path of the handrail belt 38 and along the horizontal direction. .

  As shown in FIG. 3, the four handrail driven rollers 74 are rotatably provided on the substrate 86 in a row in a horizontal direction above the travel path of the handrail belt 38. . The four handrail driving rollers 72 and the four handrail driven rollers 74 hold the handrail belt 38 and run.

  As shown in FIG. 2, the four drive sprockets 76 are mounted coaxially with the four handrail drive rollers 72, and an auxiliary sprocket 78 is rotatable between the two central drive sprockets 76. It is provided in. Each drive sprocket 76 rotates with the handrail drive roller 72. Note that the handrail drive roller 72 is not attached to the auxiliary sprocket 78.

  As shown in FIG. 2, two guide sprockets 80 and 82 are rotatably provided between the handrail sprocket 27 and the handrail drive device 70. An endless drive belt 84 is stretched over the handrail sprocket 27, four drive sprockets 76, one auxiliary sprocket 78, and guide sprockets 80 and 82. As shown in FIG. 2, the drive belt 84 passes through the lower peripheral surface of the handrail sprocket 27, the guide sprocket 80 and the guide sprocket 82, the upper peripheral surface of the first drive sprocket 76, and the upper surface of the second drive sprocket 76. It passes through the peripheral surface, the lower peripheral surface of the auxiliary sprocket 78, the upper peripheral surface of the third drive sprocket 76, and the upper peripheral surface of the fourth drive sprocket 76, and reaches the position of the handrail sprocket 27 again. Accordingly, when the handrail sprocket 27 rotates in synchronization with the main drive sprocket 24 that drives the step 30, the handrail drive roller 72 provided coaxially with the four drive sprockets 76 also rotates in synchronization.

(2-2) Handrail driven roller 74 and pressing adjustment device 104
Next, the handrail driven roller 74 and the pressure adjusting device 104 will be described with reference to FIG.

  As shown in FIG. 3, four substantially rectangular upper and lower plates 106 are arranged in a line on the substrate 86. One end of the upper and lower plates 106 is rotatably attached to the substrate 86 about the rotation shaft 108.

  As shown in FIG. 3, four handrail driven rollers 74 are provided on four upper and lower plates 106 so as to be rotatable around a rotation shaft 130.

  As shown in FIG. 3, the other ends of the upper and lower plates 106 are free ends, and the support plate 110 protrudes sideways from the other ends. The support adjustment plate 104 is attached to the support plate 110 and will be described below.

  As shown in FIG. 3, a lower receiving plate 112 and an upper receiving plate 114 protrude from the substrate 86 above and below the substrate 86 corresponding to the supporting plate 110. Screw rods 118 are vertically arranged on the lower receiving plate 112, the supporting plate 110, and the upper receiving plate 114. The screw rod 118 is fixed to the upper receiving plate 114, movably penetrates the supporting plate 110, and is fixed to the lower receiving plate 112 with a nut 120. A coil-shaped spring spring 116 is disposed between the lower receiving plate 112 and the support plate 110 with the screw rod 118 housed therein. As shown in FIG. 3, an electromagnetic coil 122 is provided around the screw rod 118 and between the upper receiving plate 114 and the support plate 110. The spring spring 116 urges the other end of the upper and lower plates 106 in a direction of pressing upward, whereby the handrail driven roller 74 presses the handrail belt 38 against the handrail drive roller 72. On the other hand, when the electromagnetic coil 122 is excited, the other end of the upper and lower plates 106 is pushed down against the urging force of the spring spring 116, and the handrail driven roller 74 is separated from the handrail belt 38.

(2-3) Speed detection device 126
Next, the speed detecting device 126 will be described with reference to FIG. The speed detecting device 126 is attached to the handrail driven roller 74 at the lowermost floor as shown in FIG. The speed detection device 126 detects the belt speed of the handrail belt 38.

  As shown in FIG. 3, a disk-shaped rotating member 132 is attached to the rotating shaft 130 of the handrail driven roller 74. A plurality of (for example, 12) detection pieces 134 project from the outer peripheral surface of the rotating member 132 at equal angles, and the rotating member 132 is a gear type as a whole. The rotating member 132 rotates together with the handrail driven roller 74.

  As shown in FIG. 3, a count sensor 136 is provided on the rotating member 132, and a connection cord 138 connected to the control unit 50 extends from an end of the count sensor 136. The count sensor 136 outputs a detection pulse to the control unit 50 each time the rotating detection piece 134 passes. The control unit 50 counts the number of detected pulses per unit time, and calculates the belt speed from the counted number of detected pulses.

(3) Handrail load device 88
Next, the handrail load device 88 will be described with reference to FIGS. As shown in FIG. 1, the handrail load device 88 is provided inside the skirt guard 44 near the lower floor of the handrail drive device 70.

  As shown in FIG. 3, the truss 12 is provided with a second substrate 90 for supporting the handrail load device 88.

  As shown in FIG. 3, one end of a load upper and lower plate 94 is provided on the second substrate 90 so as to be rotatable about a rotation shaft 96. A load roller 92 is rotatably provided on the load upper and lower plates 94 about a rotation shaft 102. The other end of the load upper and lower plate 94 is a free end, and a load adjusting device 100 is provided at the other end. This load adjusting device 100 has the same structure as the above-described pressing adjusting device 104.

  As shown in FIG. 3, a backup roller 98 is rotatably attached to the second substrate 90 above the load roller 92.

  As shown in FIG. 3, the handrail belt 38 is sandwiched between a load roller 92 and a backup roller 98, and the pressing force of the load roller 92 is adjusted by a load adjusting device 100, so that a constant load is applied to the traveling handrail belt 38. give.

(4) Electrical Configuration of Escalator 10 Next, the electrical configuration of the escalator 10 will be described based on the block diagram of FIG.

  As shown in FIG. 4, the motor 20 composed of an induction motor is a three-phase motor, and includes a three-phase power supply 150, a noise filter circuit 152, a conversion circuit 154 for converting AC to DC, a power regeneration circuit 156, and an inverter circuit 158. The three-phase inverter power is supplied, and the control unit 50 can control the rotation direction and the rotation speed.

  As shown in FIG. 4, the control unit 50 includes the inverter circuit 158, the operation panels 52 and 56, the speakers 54 and 58, the upper and lower floor optical sensors 140 and 140, and the pressing of the handrail driving device 70. The adjustment device 104, the load adjustment device 100 of the handrail load device 88, the speed detection device 126, and the communication unit 160 that communicates with the outside are connected.

(5) Handrail driving force confirmation mode Next, a handrail driving force confirmation mode (hereinafter, simply referred to as “confirmation mode”) for confirming the driving force of the handrail belt 38 of the escalator 10 will be described with reference to the flowchart of FIG. explain. In this confirmation mode, as shown in FIG. 3, the backup roller 98 and the load roller 92 press the handrail belt 38 with a predetermined pressing force, and detect how much the belt speed of the handrail belt 38 decreases. If the belt speed becomes slower than a specified value, it is determined that the driving force of the handrail belt 38 has decreased, and a warning signal is output to the outside.

  In the initial state, in the handrail driving device 70, as shown in FIG. 3, four handrail driven rollers 74, with the handrail belt 38 sandwiched between the four handrail driving rollers 72, Is pressed at a predetermined pressure by using the pressing adjustment device 104. Further, in the handrail load device 88, the load roller 92 is separated from the backup roller 98, and does not sandwich the handrail belt 38.

  As shown in FIG. 5, in step S1, the worker activates the escalator 10 using the operation panel 52 or the operation panel 56 in a state where no passenger is present, and proceeds to step S2.

  In step S2, since the escalator 10 has started up, the control unit 50 sets the handrail check flag to ON in order to perform the confirmation mode immediately after startup, and proceeds to step S3.

  In step S3, the control unit 50 performs a running operation (for example, one minute) in which the steps 30 and the handrail belt 38 run while synchronizing at the rated speed for a predetermined time, and proceeds to step S4.

  In step S4, the control unit 50 detects whether or not a passenger is on by the optical sensor 140. If a passenger is on board, the process proceeds to step S5 (in the case of YES), waits for a predetermined time (for example, 10 minutes) to elapse in step S5, and returns to step S4 when the certain time has elapsed. If there is no passenger, the process proceeds to step S6 (NO).

  In step S6, the control unit 50 applies a constant load to the handrail belt 38 by the handrail load device 88. For example, the handrail belt 38 is pressed by the load roller 92 using the load adjusting device 100 so that a load of 30 kg is applied, and the process proceeds to step S7.

  In step S7, the control unit 50 detects the belt speed of the handrail belt 38 using the speed detection device 126, and determines whether or not the belt speed of the handrail belt 38 has been delayed by a predetermined value or more. For example, if it is 30% slower than the rated speed, the process proceeds to step S9 (if YES), and if it is not less than the specified value (if NO), it is determined in step S8 that the driving force of the handrail belt 38 is normal, Proceed to step S11.

  In step S9, since the belt speed is delayed more than the specified value, the control unit 50 determines that the driving force of the handrail belt 38 is reduced, and proceeds to step S10.

  In step S10, the control unit 50 outputs a warning signal indicating that the driving force of the handrail belt 38 has decreased by the communication unit 160, and the operation of the escalator 10 continues. Then, the process proceeds to step S11.

  In step S11, since the driving force of the handrail belt 38 is confirmed, the control unit 50 sets the handrail check flag to the OFF state, and proceeds to step S12.

  In step S12, the escalator 10 shifts to the standby state, and proceeds to step S13. That is, since the state in which the confirmation mode is performed is a state in which no passenger is present, the state is temporarily shifted to the standby state, and the process proceeds to step S13.

  In step S13, the control unit 50 shifts to the normal operation mode, and proceeds to step S14.

  In step S14, the control unit 50 repeats the normal operation mode and the standby mode depending on the presence or absence of a passenger. Then, the process proceeds to step S15. Here, the "standby mode" refers to a case where the escalator 10 is stopped with no passengers on board.

  In step S15, the control unit 50 measures whether or not a fixed time (for example, 3 hours) has elapsed since the handrail check flag was turned off, and if not, returns to step S13 (in the case of NO). ), And continue the normal operation mode. If the predetermined time has elapsed, the process proceeds to step S16 (if YES).

  In step S16, in order to execute the confirmation mode, the handrail check flag is turned on, and the process proceeds to step S17.

  In step S17, if it is the operation mode, the process returns to step S4 (if YES), and if it is the standby mode, the process proceeds to step S18 (if NO).

  In step S18, since the escalator 10 is stopped in the standby mode, the escalator 10 accelerates to the rated speed, and proceeds to step S19.

  In step S19, the familiar operation is performed, for example, for one minute, and the process returns to step S4.

(6) Effects As described above, according to the present embodiment, a constant load is applied to the handrail belt 38 traveling by the handrail load device 88, and the driving force is determined based on whether or not the belt speed becomes lower than the rated speed. . If the belt speed is lower than the rated speed by a specified value (for example, 30%) or more, a warning signal is output to the outside that the driving of the handrail belt 38 is abnormal. Thereby, the worker can go to the site and perform maintenance and inspection of the escalator 10.

  In addition, since this confirmation mode is performed at the time of starting the escalator 10 and at regular time intervals, it can be output to the outside when the driving force is reduced at any time.

Modification example

  Next, a modified example will be described.

(1) Modification example 1
In the above embodiment, the load roller 92 and the backup roller 98 in the handrail load device 88 are one set. However, two or more sets may be provided to apply a stronger load to the handrail belt 38.

(2) Modification 2
In the above embodiment, the load adjusting device 100 of the handrail load device 88 has the same structure as the pressing adjusting device 104 of the handrail driving device 70, but may have another structure.

(3) Modification 3
In the above-described embodiment, the speed detection device 126 is provided on the handrail driven roller 74. However, the invention is not limited thereto, and a speed detection roller may be separately provided and attached thereto.

(4) Modification 4
In the above embodiment, as the handrail driving means for driving the handrail belt 38, the handrail drive roller 72 and the handrail driven roller 74 are interposed and run. However, the handrail belt 38 is replaced by one. The handrail belt 38 may be run over individual handrail belt sheaves.

(5) Modification 5
In the above embodiment, the description has been given by applying the present invention to the escalator 10, but the present invention may be applied to a moving sidewalk instead.

(6) Others 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 new embodiments can be implemented in other various forms, and various omissions, replacements, and changes can be made without departing from the gist 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 its equivalents.

DESCRIPTION OF SYMBOLS 10 ... Escalator, 12 ... Truss, 30 ... Step, 38 ... Handrail belt, 50 ... Control part, 70 ... Handrail drive device, 88 ... Handrail load device , 92: Load roller, 98: Backup roller, 100: Load adjustment device, 104: Press adjustment device, 126: Speed detection device

The embodiment of the present invention includes a truss, a plurality of steps arranged on the truss and connected endlessly, a handrail belt, a driving means for running the steps at a predetermined running speed, and Handrail driving means for driving a handrail belt in synchronization with the steps, handrail loading means disposed on a traveling path of the handrail belt and applying a constant load to the running handrail belt; Speed detecting means for detecting the belt speed of the sliding belt, and the belt detecting means for detecting a belt speed when a constant load is applied to the handrail belt during traveling by the handrail loading means, and the detected speed is equal to or greater than a specified value. wherein possess a control means for the handrail driving force check mode the belt speed to output a warning signal when slowed, to the handrail load means, the disposed in the travel path of the handrail belt load Roller and ba A backup roller and a load adjusting unit, wherein the load adjusting unit presses the handrail belt with the load roller and the backup roller sandwiching the handrail belt, thereby reducing the load. A spring that urges the load roller away from the handrail belt in modes other than the handrail driving force confirmation mode, and a biasing force of the spring in the handrail driving force confirmation mode, A passenger conveyor having an electromagnetic coil that applies the load by pressing the load roller against a handrail belt .

The embodiment of the present invention includes a truss, a plurality of steps arranged on the truss and connected endlessly, a handrail belt, a driving means for running the steps at a predetermined running speed, and Handrail driving means for driving a handrail belt in synchronization with the steps, handrail loading means disposed on a traveling path of the handrail belt and applying a constant load to the running handrail belt; Speed detecting means for detecting the belt speed of the sliding belt, and the belt detecting means for detecting a belt speed when a constant load is applied to the handrail belt during traveling by the handrail loading means, and the detected speed is equal to or greater than a specified value. Control means for performing a handrail driving force confirmation mode for outputting a warning signal when the belt speed is reduced, wherein the handrail load means includes a load disposed on a traveling path of the handrail belt. Roller and ba A backup roller and a load adjusting unit, wherein the load adjusting unit presses the handrail belt with the load roller and the backup roller sandwiching the handrail belt, thereby reducing the load. A spring that biases the load roller away from the handrail belt in modes other than the handrail driving force confirmation mode, and a biasing force of the spring only in the handrail driving force confirmation mode, A passenger conveyor having an electromagnetic coil excited by the control means so as to apply the load by pressing the load roller on the handrail belt.

Claims (10)

Truss and
A plurality of steps arranged on the truss and connected endlessly,
With handrail belt,
Driving means for causing the steps to travel at a predetermined traveling speed,
Handrail driving means for driving the handrail belt in synchronization with the steps,
Handrail loading means arranged on a traveling path of the handrail belt and applying a constant load to the running handrail belt;
Speed detecting means for detecting a belt speed of the handrail belt,
The belt speed when a constant load is applied to the running handrail belt by the handrail load device is detected by the speed detection device, and a warning signal is issued when the belt speed becomes slower than a specified value. Control means for performing a handrail driving force confirmation mode to be output;
Passenger conveyor with. The handrail loading means has a load roller and a backup roller disposed on a traveling path of the handrail belt,
In a state where the handrail belt running between the load roller and the backup roller is sandwiched, the load roller presses the handrail belt to apply a constant load,
The passenger conveyor according to claim 1. The handrail loading unit further includes a load adjusting unit including an electromagnetic coil, so that the load roller applies a load by pressing the handrail belt with a constant pressing force,
The passenger conveyor according to claim 2. The handrail driving means includes:
Arranged on the traveling path of the handrail belt,
A plurality of sets of handrail drive rollers and handrail driven rollers are sandwiched between the handrail belts for traveling.
The passenger conveyor according to claim 1. The speed detecting means,
Provided on the handrail driven roller, detects the rotation speed of the handrail driven roller,
A passenger conveyor according to claim 4. The handrail driving means includes:
One handrail belt sheave over which the handrail belt is stretched,
The passenger conveyor according to claim 1. The control means performs the handrail driving force confirmation mode when unmanned,
The passenger conveyor according to claim 1. The control means performs the handrail driving force confirmation mode at the time of starting the passenger conveyor, or at regular intervals.
The passenger conveyor according to claim 1. The specified value is 30% of the normal belt speed of the handrail belt.
The passenger conveyor according to claim 1. The passenger conveyor is an escalator, or a moving walkway,
The passenger conveyor according to claim 1.

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