CN111196547B

CN111196547B - Step pedal inspection device and step pedal inspection method

Info

Publication number: CN111196547B
Application number: CN201911119873.3A
Authority: CN
Inventors: 野濑尊之; 大西友治; 小平法美; 渡边隆行
Original assignee: Hitachi Building Systems Co Ltd
Current assignee: Hitachi Building Systems Co Ltd
Priority date: 2018-11-16
Filing date: 2019-11-15
Publication date: 2021-07-13
Anticipated expiration: 2039-11-15
Also published as: CN111196547A; JP2020083495A; JP6934465B2

Abstract

The invention provides a step tread inspection device and a step tread inspection method used in the field of passenger conveyors, which can improve the inspection precision. A step pedal inspection device (30) is provided with: a detection unit (34), a movable arm unit (35), a support member (31), a displacement sensor (51), a vibration sensor (52), and an information processing unit (60). An information processing unit (60) acquires displacement information detected by a displacement sensor (51) and vibration information detected by a vibration sensor (52). The information processing unit (60) subtracts vibration information from the acquired displacement information, and determines an abnormality of the pedal based on the displacement information from which the vibration information has been subtracted.

Description

Step pedal inspection device and step pedal inspection method

Technical Field

The present invention relates to a step tread inspection device and a step tread inspection method for inspecting the floating of step treads provided at a passenger conveyor.

Background

The passenger conveyor includes a frame provided in a building structure and a plurality of endless connected steps provided in the frame and circulating therein. An endless chain is connected to the plurality of steps, and the plurality of steps are cyclically moved by the chain being rotationally driven.

In addition, conventionally, the floating of the step tread is checked. As a technique for detecting the rising of the step tread, for example, there is an invention described in patent document 1.

Patent document 1 describes the following technique: the device is provided with a floating amount detector for detecting the floating amount of the pedal floating from the step body and outputting a detection signal corresponding to the floating amount, and a measuring device for inputting the detection signal output from the floating amount detector. In the technique described in patent document 1, the measuring device includes a calculation unit that calculates the floating amount based on the detection signal output from the floating amount detector, and a storage unit that stores the floating amount calculated by the calculation unit.

However, in the technique described in patent document 1, since the floating amount detector also detects the vibration generated when the step moves, the detected vibration may be erroneously determined as the floating of the pedal, and the inspection accuracy may be lowered.

Patent document 1: japanese patent laid-open publication No. 2018-24489

Disclosure of Invention

In view of the above-described problems, a step tread inspection device and a step tread inspection method capable of improving inspection accuracy are provided.

In order to solve the above problems, a step tread inspection device is used for inspecting the floating of treads arranged on steps of a passenger conveyor. The step pedal inspection device is provided with: a detection unit, a movable arm, a support member, a displacement sensor, a vibration sensor, and an information processing unit. The detection portion is in contact with the tread of the step. A movable arm support detection unit. The support member supports the movable arm movably in the vertical direction. The displacement sensor detects a movable displacement amount of the movable arm. The vibration sensor detects vibration of the support member. The information processing unit acquires displacement information detected by the displacement sensor and vibration information detected by the vibration sensor. The information processing unit subtracts the vibration information from the obtained displacement information, and determines an abnormality of the pedal based on the displacement information from which the vibration information has been subtracted.

The step tread inspection method is used for inspecting the floating of the tread provided on the steps of the passenger conveyor, and includes the following steps (1) to (5).

(1) And a step of detecting the displacement of a movable arm for supporting a detection portion in contact with a step surface by a displacement sensor.

(2) And detecting vibration of a support member supporting the movable arm by a vibration sensor.

(3) And a step of acquiring, by an information processing unit, displacement information detected by the displacement sensor and vibration information detected by the vibration sensor.

(4) And a step in which the information processing unit subtracts the vibration information from the obtained displacement information.

(5) And a step in which the information processing unit determines that the pedal is abnormal based on the displacement information from which the vibration information has been subtracted.

According to the step tread inspection device and the step tread inspection method having the above-described configurations, the inspection accuracy can be improved.

Drawings

Fig. 1 is a schematic configuration diagram showing a configuration example of a passenger conveyor using a step tread inspection device of the embodiment.

Fig. 2 is a perspective view showing a step of the passenger conveyor.

Fig. 3 is a front view showing a step in a step of a passenger conveyor.

Fig. 4 is a plan view showing a step tread inspection device of the embodiment.

Fig. 5 is a side view showing a step tread inspection device of the embodiment.

Fig. 6 is a plan view showing a state in which the step tread inspection device of the embodiment is provided in the passenger conveyor.

Fig. 7 is an explanatory view showing a state in which the step tread inspection device of the embodiment is provided in the passenger conveyor.

Fig. 8 is a flowchart showing a step checking operation of the step tread checking device of the embodiment.

Fig. 9 is a flowchart showing a step checking operation of the step tread checking device of the embodiment.

Fig. 10 shows an output signal of the step tread inspection device of the embodiment, fig. 10 (a) is a side view showing a tread and a detection bar, fig. 10 (B) is an explanatory view showing the output signal, and fig. 10 (C) is an explanatory view showing the output signal from which disturbance is removed.

Fig. 11 shows an output signal of the step tread inspection device of the embodiment, fig. 11 (a) is a side view showing a state where the tread is floating, and fig. 11 (B) is an explanatory view showing the output signal.

Fig. 12 shows an output signal of the step tread inspection device of the embodiment, fig. 12 (a) is a side view showing a state where the whole step is slightly depressed, and fig. 12 (B) is an explanatory view showing the output signal.

Fig. 13 is a display example showing the determination result of the step pedal inspection device of the embodiment.

Detailed Description

Hereinafter, an embodiment of a step tread inspection device and a step tread inspection method will be described with reference to fig. 1 to 13. In the drawings, the same reference numerals are given to common components.

1. Examples of the embodiments

1-1. Example of structure of passenger conveyor

First, the structure of a passenger conveyor using a step ladder inspection device according to an embodiment (hereinafter, referred to as "present example") will be described with reference to fig. 1 to 3.

Fig. 1 is a schematic configuration diagram showing a passenger conveyor.

The passenger conveyor 1 shown in fig. 1 is a so-called escalator of an inclined type provided on an upper floor and a lower floor of a building structure. As shown in fig. 1, the passenger conveyor 1 includes: a frame 2, a control panel 3, a handrail section 4, a plurality of steps 5, a handrail 7, and a drive mechanism 10 provided in a building. Further, the passenger conveyor 1 includes: a transmission chain 11, a transmission chain 12, a driving sprocket 13, a driven sprocket 14 and a handrail driving device 17.

A drive mechanism 10, a control panel 3, and a drive sprocket 13 are disposed on the upper floor side of the housing 2. Further, a driven sprocket 14 is disposed on the downstair side of the frame 2.

The drive mechanism 10 is composed of a motor and a speed reducer. The electric motor is supplied with electric power from the control panel 3. The operation of the motor is controlled by the control panel 3. A belt-like member is wound around a drive pulley of the motor. In addition, the belt-like member is wound around a driven pulley of the reduction gear. Thereby, the rotational force of the motor is transmitted to the speed reducer via the belt-like member.

A transmission chain 11 is wound around a transmission sprocket of the reduction gear. The transmission chain 11 is wound around a drive sprocket 13. Further, the driving force of the driving mechanism 10 is transmitted to the driving sprocket 13 via the transmission chain 11, and the driving sprocket 13 rotates.

A drive chain 12 is wound around the drive sprocket 13 and the driven sprocket 14. Then, the drive sprocket 13 rotates, and thereby the driven sprocket 14 and the drive chain 12 rotate.

Further, a handrail drive chain 15 is wound around the drive sprocket 13. The handrail drive chain 15 is wound around a plurality of transmission pulleys 16 and around sprockets provided on a drive roller of a handrail drive device 17 described later.

Further, a guide member, not shown, is provided in the housing 2. The plurality of steps 5 are supported by a guide member, not shown, so that the plurality of steps 5 are movable. Further, the plurality of steps 5 are connected in an annular shape via a transmission chain 12. The plurality of steps 5 are guided by a guide member attached to the housing 2, and are circulated on the outward path side and the return path side. The passengers are carried on the steps 5 moving on the outward side.

The handrail portions 4 are supported on the upper portion of the frame 2 and are disposed on both sides in the width direction of the frame 2. An endless handrail 7 is attached to the handrail portion 4. The handrail 7 is movably supported by the handrail portion 4 with the handrail 7. The handrail 7 is cyclically moved in synchronization with the plurality of steps 5 in the same direction as the plurality of steps 5 by the handrail driving device 17.

Hereinafter, the direction in which the plurality of steps 5 move is referred to as a 1 st direction X, the width direction of the steps 5 is referred to as a 2 nd direction Y, and a vertical direction orthogonal to the 2 nd direction Y is referred to as a 3 rd direction Z.

Fig. 2 is a perspective view showing the step 5, and fig. 3 is a front view of the step showing the step 5.

As shown in fig. 2, the step 5 includes: a frame body 21, a pedal 22, a plurality of cleats 23, and a limit cleat 25. The pedal 22 is fixed to an upper surface portion 21a, which is an upper end portion of the frame body 21 in the 3 rd direction Z, by welding, for example.

The pedal 22 is provided with a plurality of cleats 23 and a limit cleat 25. The plurality of cleats 23 are projecting strips projecting from the upper surface of the pedal 22 in the 3 rd direction Z. The plurality of chucking plates 23 extend in the 1 st direction X. The plurality of clamp plates 23 are provided at predetermined intervals in the 2 nd direction Y. The upper surfaces of the plurality of cleats 23 in the 3 rd direction Z serve as tread surfaces 23a on which passengers ride.

Fig. 3 is a front view of the step 22 showing the step 5.

As shown in fig. 2 and 3, limit cleats 25 are fixed to both ends of the pedal 22 in the 1 st direction X and both ends in the 2 nd direction Y. The limit clips 25 are disposed outside the plurality of clips 23 in the 1 st direction X and the 2 nd direction Y. The limit nip 25 is a projection extending in the 1 st direction X like the nip 23.

The protruding height of the limit clip 25 in the 3 rd direction Z is set to be higher than the protruding height of the clip 23. Therefore, the upper end portion of the limit cleat 25 in the 3 rd direction Z is higher than the tread surface 23a formed by the plurality of cleats 23 in the 3 rd direction Z. The limit clip 25 prevents the clothes of the passenger from being caught in the gap between the passenger conveyor 1 and the apron plate.

In addition, in the step 5 shown in fig. 2 and 3, the example in which the limit clips 25 are provided at both ends in the 1 st direction X and both ends in the 2 nd direction Y is described, but the invention is not limited thereto. The limit cleat 25 may be provided only at both ends of the pedal 22 in the 2 nd direction X.

1-2. Structure of step pedal inspection device

Next, a configuration example of the step tread inspection device 30 of the present example used for inspecting the steps 5 of the passenger conveyor 1 will be described with reference to fig. 4 and 5.

Fig. 4 is a plan view showing the step tread inspection device 30, and fig. 5 is a side view showing the step tread inspection device 30.

As shown in fig. 4 and 5, the step tread inspection device (hereinafter, simply referred to as "inspection device") 30 includes: a support member 31; 2

pedestals

32, 32; a guide 33 formed of a rod-shaped member, a rod-shaped detector 34, a movable arm 35, a 1 st support arm 36, and a 2 nd support arm 37. The inspection device 30 includes a levelness adjusting mechanism 38 and a reflection plate 39. Further, the inspection device 30 includes: displacement sensor 51, vibration sensor 52, angular velocity sensor 53, camera 54, and information processing unit 60.

The guide portion 33 is formed of a rod-shaped member.

Lifter portions

33a, 33a are provided at both axial ends of the guide portion 33. The lifter portion 33a is provided at both ends of the guide portion 33 so as to be extendable and retractable in the axial direction. The lifter portion 33a is pressed against a cover plate 4a, and the cover plate 4a supports the handrail portion 4 (see fig. 6) provided in the vicinity of the boarding opening 101 of the passenger conveyor 1.

The guide 33 is provided with 2

bases

32 and 32. The pedestal 32 is provided on the floor of the boarding opening 101 of the passenger conveyor 1 (see fig. 6). The guide 33 is horizontally provided by the 2

bases

32, 32. Further, a leg portion 32a is provided at a lower end portion of the pedestal 32 in the 3 rd direction Z. The leg portion 32a is formed of an elastic member such as rubber. The leg 32a can reduce vibration generated when the step 5 of the passenger conveyor 1 travels.

Further, the support member 31 is disposed between the 2

bases

32 and 32 of the guide portion 33. The support member 31 includes: main surface portion 41, bearing

portion

42, 1

st fixing portion

43, and 2 nd fixing portion 44.

The bearing portion 42, the 1 st fixing portion 43, and the 2 nd fixing portion 44 are provided on the upper surface portion of the main surface portion 41 in the 3 rd direction Z. The 1 st fixing portion 43 is disposed at one end portion of the main surface portion 41 in the 2 nd direction Y, and the 2 nd fixing portion 44 is disposed at the other end portion of the main surface portion 41 in the 2 nd direction Y. The bearing portion 42 is disposed between the 1 st fixing portion 43 and the 2 nd fixing portion 44.

The bearing portion 42 supports the movable arm 35 to be swingable with respect to the 3 rd direction Z. When the inspection device 30 is installed in the passenger conveyor 1, the movable arm 35 protrudes from the boarding gate 101 of the passenger conveyor 1 toward the step 5 (see fig. 6 and 7). The detection unit 34 is attached to the distal end portion 35a of the movable arm 35 on the side opposite to the bearing portion 42 via the levelness adjustment mechanism 38.

The detection unit 34 is formed of a cylindrical member. The diameter of the detection unit 34 is set to about 30mm, for example. The axial length of the detection unit 34 is equal to the length of the step surface 23a of the step 5 in the 2 nd direction Y, or is set to be shorter than the length of the step surface 23a of the step 5 in the 2 nd direction Y. The diameter of the detection unit 34 is not limited to 30mm, and may be set to about 40mm or 20 mm.

The detection portion 34 is supported by a movable arm 35 and extends in the 2 nd direction Y. When the inspection of the passenger conveyor 1 is performed by the inspection device 30, the detection portion 34 comes into contact with the tread surface 23a of the step 5 (see fig. 7). The detection portion 34 is formed of a member having a certain degree of mass, for example, a resin material, so that the detection portion 34 side, which is the distal end portion 35a of the movable arm 35, swings downward in the 3 rd direction Z. By forming the detection portion 34 from a member having a certain degree of mass, it is possible to suppress vibration generated when the step 5 of the passenger conveyor 1 travels.

The levelness adjustment mechanism 38 is provided at the tip end portion 35a of the movable arm 35. The levelness adjusting mechanism 38 is configured to be able to adjust the axial direction of the detecting unit 34. Then, the horizontal degree adjustment mechanism 38 is adjusted to keep the axial direction of the detection unit 34 parallel to the horizontal direction.

A reflection plate 39 is fixed to the distal end portion 35a of the movable arm 35. The reflection plate 39 is formed of a mirror, for example. The reflection plate 39 reflects the measurement light emitted from the displacement sensor 51 described later toward the displacement sensor 51.

In the present example, the detection unit 34 is formed in a cylindrical shape, but the shape of the detection unit 34 is not limited to this. The shape of the detection unit 34 may be, for example, an elliptic cylindrical shape or a semicircular shape, that is, a shape in which only a portion in contact with the tread surface 23a of the step 5 is curved, and various other shapes can be applied. Further, the detection unit 34 may be rotatably attached to the distal end portion 35a of the movable arm 35.

A through hole 43a is formed in the 1 st fixing portion 43, and a through hole 44a is also formed in the 2 nd fixing portion 44. The guide portion 33 is slidably inserted into the through-

holes

43a, 44 a. Thereby, the guide portion 33 slidably supports the support member 31 by the support member 31. The 1 st support arm 36 is fixed to the 1 st fixing portion 43, and the 2 nd support arm 37 is fixed to the 2 nd fixing portion 44.

When the inspection device 30 is installed in the passenger conveyor 1, the 1 st support arm 36 and the 2 nd support arm 37 protrude from the boarding gate 101 of the passenger conveyor 1 toward the step 5 (see fig. 6 and 7). The 1 st support arm 36 has a distal end portion 36a on the opposite side of the 1 st fixing portion 43 disposed above the detection portion 34 disposed at the distal end portion 35a of the movable arm 35 in the 3 rd direction Z. Further, a displacement sensor 51 is provided at the distal end portion 36a of the 1 st support arm 36.

The displacement sensor 51 is disposed to face the detection unit 34 and the reflection plate 39. The displacement sensor 51 is, for example, a laser range finder that irradiates light and receives reflected light. The displacement sensor 51 irradiates light toward the detection unit 34 and the reflector 39, and receives light reflected by the reflector 39. The displacement sensor 51 measures the distance from the displacement sensor 51 to the detection unit 34, and detects the amount of movement in the 3 rd direction Z, that is, the amount of displacement, of the detection unit 34 and the distal end portion 35a of the movable arm 35.

The displacement sensor 51 is connected to the information processing unit 60 via a displacement sensor cable 51 a. Then, the displacement sensor 51 outputs the detected displacement information to the information processing unit 60.

The 2 nd support arm 37 is formed to be longer in the longitudinal direction than the 1 st support arm 36. Therefore, the distal end portion 37a of the 2 nd support arm 37 on the opposite side of the 2 nd fixing portion 44 protrudes in the 1 st direction X from the distal end portion 36a of the 1 st support arm 36. Further, a camera 54 is provided at the distal end portion 37a of the 2 nd support arm 37.

The camera 54 is fixed to a lower surface portion of the distal end portion 37a of the 2 nd support arm 37 in the 3 rd direction Z. The camera 54 images the step 5 running below the camera 54 in the 3 rd direction Z in synchronization with the detection operation by the displacement sensor 51. The camera 54 is connected to the information processing unit 60 via a camera cable 54 a. Then, the camera 54 outputs the captured image information to the information processing section 60.

The vibration sensor 52 is provided on the main surface 41 of the support member 31. The vibration sensor 52 detects vibrations generated when the step 5 of the passenger conveyor 1 travels. The vibration sensor 52 is connected to the information processing unit 60 via a vibration sensor cable 52 a. Then, the vibration sensor 52 outputs the detected vibration information to the information processing unit 60.

In addition, an angular velocity sensor 53, which represents an example of a sub-displacement sensor, is provided in the bearing portion 42 of the support member 31. The angular velocity sensor 53 detects the swing angle of the movable arm 35. The angular velocity sensor 53 is connected to the information processing unit 60 via an angular velocity sensor cable 53 a. The angular velocity sensor 53 outputs the detected angular information of the movable arm 35, that is, sub-displacement information, to the information processing unit 60.

In the present example, the angular velocity sensor 53 that performs a detection method different from that of the displacement sensor 51 is applied as the sub-displacement sensor, but the present invention is not limited to this. For example, the support member 31 may be provided with a 3 rd support arm, and a sub-displacement sensor that performs the same detection method as the displacement sensor 51 may be attached to the tip end portion of the 3 rd support arm.

The example of using the laser range finder as the displacement sensor 51 has been described, but the present invention is not limited thereto. For example, an angular velocity sensor that performs the same detection method as the angular velocity sensor 53 as the sub-displacement sensor may be used for the displacement sensor, and the displacement sensor including the angular velocity sensor may be provided in the bearing portion 42.

In the present example, an example in which the displacement sensor 51, the vibration sensor 52, the angular velocity sensor 53, and the camera 54 are connected to the information processing unit 60 via the

cables

51a, 52a, 53a, and 54a has been described, but the present invention is not limited to this. For example, information acquired by the displacement sensor 51, the vibration sensor 52, the angular velocity sensor 53, and the camera 54 may be wirelessly output to the information processing unit 60.

The information processing unit 60 includes a signal processing unit 61, an arithmetic unit 62, a determination unit 63, and a display unit 64. As the information processing unit 60, for example, a personal computer, a portable information terminal, or the like is applied. The signal processing unit 61 processes signals output from the displacement sensor 51, the vibration sensor 52, and the angular velocity sensor 53 and image information output from the camera 54. The signal processing unit 61 outputs the processed signal to the arithmetic unit 62.

The calculation unit 62 calculates the floating amount of the pedal 22 and the cleat 23 on the step 5 based on the output signal processed by the signal processing unit 61. Then, the calculation unit 62 outputs the calculated information to the determination unit 63.

The determination unit 63 determines whether or not the floating amount of the pedal 22 and the cleat 23 on the step 5 is good based on the calculation result of the calculation unit 62. Then, the determination unit 63 outputs the determination result to the display unit 64. The display unit 64 displays various information such as the determination result of the determination unit 63 and the floating amount.

In the inspection apparatus 30 of the present embodiment, an example in which the support member 31 is slidably supported by the guide portion 33 is described, but the present invention is not limited to this. The support member 31 may be placed directly on the floor of the riding port 101. When the support member 31 is placed on the floor of the platform 101, a magnet may be provided on the lower surface portion of the support member 31 in the 3 rd direction Z so as to be attracted to the floor of the platform 101.

2. Example of inspection operation performed by step Pedal inspection apparatus

Next, an example of the inspection operation of the step 5 using the step tread inspection device 30 having the above-described configuration will be described with reference to fig. 6 to 11.

Fig. 6 and 7 show a state in which the passenger conveyor 1 is provided with the step tread inspection device 30. Fig. 8 and 9 are flowcharts showing the inspection operation.

First, the structure around the landing entrance 101 of the passenger conveyor 1 will be described.

As shown in fig. 6 and 7, a plurality of comb-shaped plate members 102 are disposed at the front end portions of the boarding gates 101 of the passenger conveyor 1 into which the plurality of steps 5 enter. The comb-like plate members 102 are arranged side by side in the 2 nd direction Y at the front end of the boarding opening 101. 2 cover plates 4a for supporting the handrail portion 4 are provided at the passenger conveyor 1. The 2 cover plates 4a are arranged to face each other in the 2 nd direction Y with a step 5 interposed therebetween.

When performing the inspection operation, the worker sets the inspection device 30 at the boarding gate 101 of the passenger conveyor 1 (step S1). First, the pedestal 32 of the inspection apparatus 30 is placed on the floor of the boarding port 101. Then, the length of the lifter portion 33a of the guide portion 33 in the 2 nd direction Y is adjusted so that the lifter portion 33a is pressed against the lid plate 4 a. Thereby, the guide portion 33 is disposed between the 2

cover plates

4a, 4a facing each other in the 2 nd direction Y. The guide 33 is disposed in a horizontal state with the axial direction of the guide 33 parallel to the 2 nd direction Y.

When the guide portion 33 and the base 32 are provided in the platform 101, the movable arm 35, the 1 st support arm 36, and the 2 nd support arm 37 of the inspection device 30 protrude from the platform 101 toward the step 5. Further, the worker adjusts the detecting unit 34 to be horizontal to the axial direction by the levelness adjusting mechanism 38.

Further, the movable arm 35 swings the leading end portion 35a downward in the 3 rd direction Z due to the self-weight of the detection portion 34 and the leading end portion 35 a. Then, the detection unit 34 comes into contact with the tread 23a of the step 5. At this time, the support member 31 is slid along the guide portion 33 so that the detection portion 34 does not contact the limit clips 25 provided at both ends of the step 5 in the 2 nd direction Y. Further, since the detection unit 34 is formed of a rod-shaped member, the plurality of clamp plates 23 of the step 5 can be inspected at the same time.

Then, the worker uses a colored chalk or the like to mark the tread surface 23a of the step 5 which becomes the start position. Next, the passenger conveyor 1 is operated in one of the upward direction and the downward direction, and the measurement of the displacement sensor 51, the vibration sensor 52, the angular velocity sensor 53, and the camera 54 is started (step S2).

Here, when the tread surface 23a is not floating, the detection unit 34 and the movable arm 35 are not movable. However, when the tread surface 23a is floated, the tip portion 35a of the movable arm 35 swings about the bearing 42 toward the upper side in the 3 rd direction Z when the detection portion 34 comes into contact with the floated portion. As described above, according to the inspection apparatus 30 of this example, the movable arm 35 can be easily moved in the 3 rd direction Z by swinging the movable arm 35 by the support of the bearing portion 42.

Next, the displacement sensor 51, the vibration sensor 52, and the angular velocity sensor 53 continuously output the detected signals (displacement information, vibration information, and sub-displacement information) to the signal processing unit 61 of the information processing unit 60. The camera 54 continuously outputs the captured image information to the signal processing unit 61 of the information processing unit 60 (step S3).

Further, when the camera 54 captures a mark indicating the start position provided on the step 5, the information processing section 60 stores the step 5 provided with the mark as the start position.

Fig. 10 (a) is a side view showing the cleat 23 and the detecting portion 34 as the pedal 22, fig. 10 (B) is an explanatory view showing an output signal detected by the displacement sensor 51, and fig. 10 (C) is a view of fig. 10 (B) from which an output signal detected by the vibration sensor 52 is removed. Fig. 10 (B) shows the output signal with the sign inverted.

Through the processing of step S3, the information processing unit 60 can acquire the continuous output signal detected by the displacement sensor 51 shown in fig. 10 (B). Since the detection unit 34 is formed in a cylindrical shape of about 30mm, the continuous output signal detected by the displacement sensor 51 does not have a rectangular shape but has a curve shown in fig. 10 (B).

Next, the signal processing unit 61 divides the continuous output signal detected by the displacement sensor 51 for each step 5 (step S4). As shown in fig. 10 (a), when the detection unit 34 passes the limit bridge 25 provided at the end of the step 5 in the 1 st direction X, the movable arm 35 swings the distal end 35a thereof upward in the 3 rd direction Z. Therefore, as shown in fig. 10 (B), the output value of the continuous output signal detected by the displacement sensor 51 increases when the continuous output signal passes through the limit bridge 25.

The signal processing unit 61 acquires a point at which the output value of the displacement sensor 51 becomes maximum as the characteristic point P1. Then, the signal processing unit 61 divides the continuous output signal for each step 5 with reference to the feature point P1.

Further, in the step where the limit clip 25 is not provided at the end in the 1 st direction X, the output value of the displacement sensor 51 greatly changes due to a gap or a step difference generated between 2 steps adjacent in the 1 st direction X. Then, the signal processing unit 61 acquires, as the feature point, a point at which the output value of the continuous output signal greatly changes. Accordingly, even in the step where the limit clip 25 is not provided at the end in the 1 st direction X, the signal detected and output by the displacement sensor 51 can be divided for each step.

In this example, an example in which the continuous output signal is divided from a characteristic point that greatly changes in the continuous output signal has been described, but the present invention is not limited to this. For example, the information processing unit 60 may acquire the traveling speed of the step 5 of the passenger conveyor 1 and the time during which the displacement sensor 51 performs the detection operation, and divide the continuous output signal into a number of seconds.

Next, the signal processing unit 61 compares the output signal divided for each step 5 with the image data for each step 5 extracted from the image captured by the camera 54 (step S5). Then, the signal processing unit 61 determines whether or not the number of divisions (division number) of the continuous output signal of the displacement sensor 51 matches the actual number of steps 5 of the passenger conveyor 1 (step S6).

In the process of step S6, if it is determined that the number of divisions does not match the number of steps 5 (no determination at step S6), the signal processing unit 61 changes the parameter values used for the division in the process of step S4 (step S7). The parameter value is, for example, a threshold value for obtaining an output value of the feature point P1, or a number of seconds in the case of time division. Then, returning to the process of step S4, the signal processing unit 61 divides the continuous output signal of the displacement sensor 51 again for each step 5.

In this way, according to the inspection apparatus 30 of the present example, the number of divisions of the continuous output signal performed in the process of step S4 is checked using the image captured by the camera 54. This enables accurate division of the continuous output signal detected by the displacement sensor 51 for each step 5.

In the process of step S6, when the signal processing unit 61 determines that the number of divisions matches the number of steps 5 (yes determination at step S6), a number is assigned to each of the divided output signals, and the divided output signals are associated with the steps 5. Then, the arithmetic unit 62 calculates the displacement amount from the output signal of the vibration sensor 52 for each step 5 (step S8).

Next, the computing unit 62 subtracts the displacement amount calculated in the process of step S8 from the output signal of the displacement sensor 51 divided for each step 5 (step S9). This makes it possible to remove the influence of the vibration generated when the step 5 of the passenger conveyor 1 travels, that is, the external disturbance, from the output value. As a result, a clean output signal from which external disturbance (vibration) is removed as shown in (C) of fig. 10 can be obtained.

Next, as shown in fig. 9, the arithmetic unit 62 calculates an average value of the output values (output signals) of the displacement sensor 51 for each step 5 based on the number of data points set in advance (step S10). Then, the arithmetic unit 62 calculates a value (displacement amount) obtained by subtracting the average value obtained in step S10 from the output value of the displacement sensor 51 for each step 5 (step S11).

Next, the computing unit 62 calculates the displacement amount for each step 5 based on the output value detected by the angular velocity sensor 53 (step S12). The calculation unit 62 associates the displacement amount calculated in step S12 with the step 5.

In the process of step S12, the vibration information detected by the vibration sensor 52 may be subtracted from the calculated displacement amount of the angular velocity sensor 53.

Next, the information processing unit 60 compares the displacement amount of the output value from the angular velocity sensor 53 calculated in step S12 with the displacement amount calculated in step S11 for each step 5 (step S13). Then, the information processing unit 60 determines whether or not the displacement amount obtained from the angular velocity sensor 53 matches the displacement amount obtained from the displacement sensor 51 (step S14).

In the process of step S14, when it is determined that the displacement amounts obtained from the angular velocity sensor 53 and the displacement sensor 51 do not match (no determination of step S14), the information processing unit 60 determines that an abnormality has occurred in any one of the angular velocity sensor 53 and the displacement sensor 51. Then, the information processing unit 60 records the number of the step 5 whose displacement amounts do not match, and ends the inspection process (step S15).

The information processing unit 60 causes the display unit 64 to display the number of the step 5 that is not matched and is abnormal in the angular velocity sensor 53 or the displacement sensor 51. Thus, by using two sensors, i.e., the displacement sensor 51 and the angular velocity sensor 53 formed of the sub-displacement sensor, it is possible to determine an abnormality of the displacement sensor itself and perform a high-precision inspection.

In the process of step S14, when the information processing unit 60 determines that the displacement amounts obtained from the angular velocity sensor 53 and the displacement sensor 51 match (yes at step S14), the determination unit 63 extracts the step 5 in which the displacement amount obtained from the displacement sensor 51 is equal to or greater than the predetermined threshold value (step S16).

As shown in fig. 10C, in the case where there is no floating normal step 5 in the cleat 23 (pedal 22), the output value increases only at the point corresponding to the limit cleat 25. When the detection unit 34 passes the tread 23a, the output value varies slightly. Therefore, in the process of step S11, the displacement amount obtained by subtracting the average value from the output value of the displacement sensor 51 is almost 0. Therefore, in the processing of step S16, the determination unit 63 determines that the step 5 shown in (a) to (C) of fig. 10 is normal.

Fig. 11 a is a side view showing the bridge 23 (pedal 22) and the detection unit 34 in which the step 5 is raised on the bridge 23 (pedal 22), and fig. 11B is an explanatory view showing an output signal detected by the displacement sensor 51. The output signal shown in fig. 11 (B) is obtained by subtracting the output signal detected by the vibration sensor 52 from the output signal of the displacement sensor 51.

As shown in fig. 11 (B), the output signal of the displacement sensor 51 is different from the average value T1 thereof. Therefore, in the process of step S11, the displacement amount obtained by subtracting the average value from the output value of the displacement sensor 51 becomes 0 or more. Then, in the processing of step S16, the determination unit 63 determines that the step 5 shown in fig. 11 (a) and (B) is abnormal.

Fig. 12 (a) is a side view of the bridge 23 (pedal 22) and the detection unit 34 showing a state in which the entire step 5 is depressed downward in the 3 rd direction Z, and fig. 12 (B) is an explanatory diagram showing an output signal detected by the displacement sensor 51. The output signal shown in fig. 12 (B) is obtained by subtracting the output signal detected by the vibration sensor 52 from the output signal of the displacement sensor 51.

As shown in fig. 12 (B), the output value when the tread 23a passes between the 2

limit cleats

25, 25 is detected to be lower than the output value of the other step 5, but the fluctuation is slight. Therefore, the displacement amount obtained by subtracting the average value from the output value of the displacement sensor 51 in the processing of step S11 becomes almost 0. Therefore, in the process of step S16, the determination unit 63 determines that the step 5 shown in fig. 12 (a) and (B) is normal.

As described above, according to the inspection device 30 of the present example, the output signal detected by the displacement sensor 51 is divided for each step 5, and the floating of the pedal 22 is detected from the difference from the average value thereof. Thus, the state of the pedal 22 can be accurately determined even for the step 5 displaced in the 3 rd direction Z as a whole as shown in fig. 12 (a) and (B).

The displacement of the entire step 5 in the 3 rd direction Z shown in fig. 12 (a) is detected by a sensor (not shown) provided in the passenger conveyor 1.

In the inspection device 30 of the present example, the output value (vibration information) of the vibration sensor 52 is subtracted from the output value (displacement information) of the displacement sensor 51 in the process of step S9. Thus, in the processing of step S16, it is possible to prevent an error from occurring in the determination by the determination unit 63 due to vibration during travel of the passenger conveyor 1. As a result, the inspection accuracy of the inspection apparatus 30 can be improved.

In the output signals shown in fig. 11 (B) and 12 (B), the maximum value of the output value is acquired as the feature point, and the output signal can be divided for each step 5 in the processing of step S4.

Next, the determination unit 63 of the information processing unit 60 determines in the process of step S16 to display the extracted step 5 as an abnormal step having a large floating amount on the display unit 64 (step S17). Through the above steps, the inspection operation of the passenger conveyor 1 using the inspection device 30 of the present example is completed.

Fig. 13 is a display example showing the determination result.

As shown in fig. 13, the number of the step 5 and the determination result are displayed on the display unit 64, for example, "OK" and "NG" are displayed. Since the determination result is displayed for each step 5, the step 5 in which an abnormality is detected can be easily identified from among the plurality of steps 5.

The determination result displayed on the display unit 64 is not limited to the display example shown in fig. 13. For example, only the number of the step 5 in which the abnormality is detected may be displayed, and various other display methods may be applied.

In the case of the passenger conveyor 1 in which the length of the step 5 in the 2 nd direction Y is about 2 times longer than the length of the detection portion 34 in the axial direction, first, the support member 31 is slid along the guide portion 33 to one side in the 2 nd direction Y. Then, the detection unit 34 is disposed on one side of the stage 5 in the 2 nd direction Y to perform the first inspection operation. Next, the support member 31 is slid along the guide portion 33 toward the other side in the 2 nd direction Y, and the detection portion 34 is disposed on the other side in the 2 nd direction Y of the step 5. Then, the inspection device 30 performs a second inspection operation. In this manner, by sliding the support member 31 along the guide portion 33, the inspection of the step 5 in the 2 nd direction Y, that is, the entire width direction can be easily performed.

When the inspection operation is performed 2 times for one step 5 as described above, two determination results are output for one step 5. At this time, the determination unit 63 determines the logical sum of the two determination results as a result and outputs the result.

In the present example, the example in which the displacement information detected by the displacement sensor 51 is divided for each step 5 and then the vibration information detected by the vibration sensor 52 is subtracted has been described, but the present invention is not limited to this. For example, the vibration information detected by the vibration sensor 52 may be subtracted before the displacement information detected by the displacement sensor 51 is divided. This makes it possible to more accurately divide the displacement information for each step 5 without being affected by the vibration of the passenger conveyor 1.

The present invention is not limited to the above-described and illustrated embodiments, and various modifications can be made without departing from the scope of the invention described in the claims.

In the above-described embodiment, the escalator in which the step difference is generated between the steps is described as an example of the inclined passenger conveyor, but the passenger conveyor of the present invention can be applied to an electric road having a plurality of steps in which the step difference is not generated between the steps, a so-called moving walkway.

In addition, the present invention can also be applied to a passenger conveyor having a frame in which a portion parallel to the upper horizontal section and the lower horizontal section is provided in at least a part of the inclined section. Further, the extension direction of the inclined section changes while bending, and thus the present invention can be similarly applied to a passenger conveyor having a frame in which the extension directions of the upper horizontal section and the lower horizontal section are different.

In the present specification, the terms "parallel" and "orthogonal" are used, but these terms do not mean exactly "parallel" and "orthogonal", and may be "substantially parallel" and "substantially orthogonal" within a range that includes "parallel" and "orthogonal" and can exhibit their functions.

Description of reference numerals

1 … passenger conveyor

2 … frame body

4 … balustrade part

4a … cover plate

5 … step

21 … frame body

21a … upper surface part

22 … pedal

23 … clamping plate

23a … tread

25 … limit splint

30 … step pedal inspection device

31 … supporting part

32 … stand

32a … foot

33 … guide part

33a … tappet portion

34 … detection part

35 … Movable arm

35a … front end

36 … supporting arm 1

37 … item 2 support arm

38 … levelness adjusting mechanism

39 … reflecting plate

41 … major face

42 … bearing part

43 … item 1 securing element

44 … No. 2 fixed part

44a … through the hole

51 … displacement sensor

51a, 52a, 53a, 54a … cable

52 … vibration sensor

53 … angular velocity sensor (sub displacement sensor)

54 … Camera

60 … information processing unit

61 … Signal processing section

62 … arithmetic unit

63 … determination unit

64 … display section.

Claims

1. A step tread inspection device for inspecting the floating of a tread provided on a step of a passenger conveyor, comprising:

a detection unit that contacts the tread surface of the step;

a movable arm that supports the detection unit;

a support member that supports the movable arm so that the movable arm is movable in a vertical direction;

a displacement sensor that detects a displacement amount of the movable arm;

a vibration sensor that detects vibration of the support member; and

an information processing unit that acquires displacement information detected by the displacement sensor and vibration information detected by the vibration sensor,

the information processing unit subtracts the vibration information from the obtained displacement information, and determines an abnormality of the pedal based on the displacement information from which the vibration information is subtracted.

2. The step tread inspection device according to claim 1,

the information processing unit divides the displacement information detected by the displacement sensor for each step, and determines abnormality of the pedal based on the divided displacement information.

3. The step tread inspection device according to claim 2,

the step tread inspection device further comprises a camera for photographing the step during traveling and outputting the photographed image information to the information processing unit,

the information processing unit compares the divided displacement information with image data of each step extracted from an image captured by the camera, and determines whether or not the number of divided displacement information matches the number of steps.

4. The step tread inspection device according to claim 1,

the step pedal inspection device further includes a sub-displacement sensor that detects a displacement amount of the movable arm by the same or different method as the displacement sensor,

the information processing unit compares the displacement information detected by the displacement sensor with sub-displacement information detected by the sub-displacement sensor, and determines an abnormality of the displacement sensor and the sub-displacement sensor.

5. The step tread inspection device according to claim 1,

the movable arm is swingably supported on the support member via a bearing portion,

the detection portion is provided at a distal end portion of the movable arm opposite to the bearing portion.

6. The step tread inspection device according to claim 1,

the detection section is formed of a rod-shaped member and is disposed such that an axial direction thereof is parallel to a width direction of the step,

the step tread inspection device further includes a levelness adjusting mechanism that adjusts the axial direction of the detection unit to be horizontal.

7. The step tread inspection device according to claim 1,

the step tread inspection device further includes a bar-shaped guide portion provided on a cover plate that supports a handrail portion of the passenger conveyor,

the support member is slidably supported by the guide portion.

8. A step tread inspection method for inspecting a step tread provided on a step of a passenger conveyor, comprising:

detecting a displacement amount of a movable arm for supporting a detection portion that contacts a tread surface of the step by a displacement sensor;

detecting vibration of a support member supporting the movable arm by a vibration sensor;

a step of acquiring, by an information processing unit, displacement information detected by the displacement sensor and vibration information detected by the vibration sensor;

a step in which the information processing unit subtracts the vibration information from the obtained displacement information; and

and a step in which the information processing unit determines that the pedal is abnormal based on the displacement information from which the vibration information is subtracted.

9. The step tread inspection method according to claim 8,

the step pedal inspection method further includes a step of dividing the displacement information detected by the displacement sensor for each step by the information processing unit,

the information processing unit determines abnormality of the pedal based on the divided displacement information.

10. The step tread inspection method according to claim 9,

the step pedal inspection method further includes:

a step of imaging the step during travel by a camera and outputting the imaged image information to the information processing unit;

and a step of comparing the divided displacement information with image data of each step extracted from an image captured by a camera, and determining whether the number of divided displacement information matches the number of steps.