JP6269165B2 - Handrail inspection equipment for passenger conveyors - Google Patents

Description

The present invention relates to an apparatus for inspecting the swelling of a handrail of a passenger conveyor.

A part of the surface of a handrail of a passenger conveyor may bulge in a convex shape or may swell as a whole. These bulges may cause other safety devices to malfunction. In order to inspect the swelling of the handrail, the roller is brought into contact with the surface of the driven handrail, the displacement of the roller in the direction perpendicular to the surface is detected, and if the displacement is large, it is determined that the swelling is present. ing.
(For example, see Patent Document 1)

JP 2002-211872 A

Since the roller is in contact with the surface of the handrail for inspection, the state of the portion where the roller is not in contact cannot be confirmed. If the roller is to be brought into contact with a wide area on the surface of the handrail, a large number of rollers are required and the inspection apparatus becomes complicated. Further, the roller is urged against the surface of the handrail in order to detect the bulge, and since the roller squeezes the bulge, an accurate inspection cannot be performed. Further, when the entire handrail fluctuates with respect to the inspection device as the handrail is driven, the roller is displaced regardless of the presence or absence of the swelling, so that an accurate inspection cannot be performed.

The present invention has been made to solve such a problem, and an object thereof is to obtain a handrail inspection device for a passenger conveyor that can accurately inspect the swelling of a handrail with a simple structure.

The handrail inspection device for a passenger conveyor according to the present invention is provided to face the surface of the handrail, scans the surface with a laser beam in the width direction intersecting the direction in which the handrail is driven, and the surface of the intermediate portion in the width direction An inspection unit for obtaining two-dimensional distance data to the first distance and the surface in the width direction, which is a distance up to
A distance sensor provided opposite to the inspection unit across the handrail to obtain a second distance that is a distance to the back surface of the intermediate unit;
The first determination for determining the change in the shape of the surface by comparing and analyzing the surface shape data generated from the two-dimensional distance data and preset reference data was performed using the first distance and the second distance. A third determination that is a distance between the front surface and the back surface and the reference data are compared and analyzed to perform a second determination for determining an increase in the distance between the front surface and the back surface, and based on the first determination and the second determination, And an arithmetic unit that determines bulges.

According to the present invention, the inspection unit scans the surface of the handrail with laser light, and the calculation unit performs the first determination for determining the change in the shape of the surface, so that a wide range of the surface of the handrail is inspected with a simple structure. it can. The calculation unit performs a second determination for comparing the third distance obtained using the first distance and the second distance and the reference data to determine an increase in the distance between the front surface and the back surface. Since the calculation unit determines the swelling of the handrail based on the first determination and the second determination, it can be determined that the handrail is swollen even when the handrail is swollen as a whole without changing the shape of the surface. In addition, it can be determined that the handrail is not swollen when the handrail is not swollen and the handrail is fluctuating with respect to the handrail inspection device so as to wave. For this reason, the swelling of the handrail can be accurately determined.

ADVANTAGE OF THE INVENTION According to this invention, the handrail inspection apparatus of a passenger conveyor which can test | inspect accurately the swelling of a handrail with a simple structure is obtained.

It is a whole block diagram which shows typically the handrail inspection apparatus of the passenger conveyor by Embodiment 1 of this invention. It is principal part sectional drawing which shows the handrail inspection apparatus of a passenger conveyor by arrow II-II shown in FIG. It is an illustration figure which shows the handrail and surface shape data by Embodiment 1 of this invention. It is an illustration figure which shows the handrail and surface shape data by Embodiment 1 of this invention. It is an illustration figure which shows the state which is inspecting the handrail with the handrail inspection apparatus of the passenger conveyor by Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the handrail inspection apparatus of the passenger conveyor by Embodiment 1 of this invention. It is an illustration figure which shows the state which is inspecting the handrail with the handrail inspection apparatus of the passenger conveyor by Embodiment 2 of this invention.

Embodiment 1 FIG.
An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an overall configuration diagram schematically showing a passenger conveyor handrail inspection apparatus according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view of the main part of the handrail inspection device for the passenger conveyor taken along the line II-II shown in FIG. 1 and shows a normal state in which the handrail is not swollen. FIG. 3 is an exemplary diagram showing handrails and surface shape data, and shows a case where there is no change in the surface shape data. FIG. 4 is an exemplary diagram showing handrails and surface shape data, and shows a case where there is a change in the surface shape data. FIG. 5 is an exemplary view showing a state in which the handrail is inspected by the handrail inspection device of the passenger conveyor. FIG. 6 is a flowchart showing the operation of the passenger conveyor handrail inspection device.

1 and 2, the passenger conveyor 1 is provided with a handrail 5 formed in an endless ring shape on the outer peripheral side of the balustrade 3. FIG. 2 shows a normal state in which the handrail 5 is not swollen. The handrail 5 is guided by the handrail guide 7 and driven to circulate around the outer periphery of the balustrade 3. The cross section of the handrail 5 in a direction perpendicular to the direction in which the handrail 5 is driven has a flat C shape. The closed side is the surface 10 on which the passengers can grab. The handrail guide 7 has a T-shaped cross section with a wide width on the tip side. The wide portion of the handrail guide 7 on the front end side is disposed inside the C-shape of the handrail 5, and the narrow portion of the handrail guide 7 is projected outward from the C-shaped opening of the handrail 5. It is fixed to a structural frame (not shown) of the passenger conveyor.

The handrail inspection device 15 is provided with a range sensor 17 as a test unit, a distance sensor 19, and a control calculation unit 21 as a calculation unit. The range sensor 17 and the distance sensor 19 are provided on the return path 23 where the handrail 5 is turned back at the exit of the passenger conveyor and headed toward the entrance. The range sensor 17 is provided to face the surface 10 of the handrail 5 so that the laser beam 14 can be scanned on the surface 10 of the handrail 5.

The range sensor 17 sequentially irradiates the laser beam 14 in the width direction of the handrail 5 intersecting the longitudinal direction in which the handrail 5 is driven, and receives the reflected light. As a result, a series of distance data between each part of the surface 10 of the handrail 5 in the scanned range and the range sensor 17 is obtained. This series of distance data is two-dimensional distance data. Further, as shown in FIG. 2A, the range sensor 17 is lowered from the range sensor 17 to the surface 10 of the intermediate portion 5a in the width direction of the handrail 5, that is, from the range sensor 17 to the surface 10 of the handrail 5. A first distance X that is the length of the perpendicular is obtained.

The distance sensor 19 is embedded in a wide portion on the front end side of the handrail guide 7, and is provided to face the range sensor 17 with the handrail 5 interposed therebetween. The distance sensor 19 and the range sensor 17 are arranged with a sensor distance D open. The distance sensor 19 measures the distance using, for example, light or sound waves. As shown in FIG. 2A, the distance sensor 19 is a distance from the distance sensor 19 to the back surface 12 of the intermediate portion 5 a in the width direction of the handrail 5, that is, the length of the perpendicular line from the distance sensor 19 to the back surface 12 of the handrail 5. A second distance Y is obtained.

The control calculation unit 21 controls the operations of the range sensor 17 and the distance sensor 19. In the control calculation unit 21, the sensor distance D between the range sensor 17 and the distance sensor 19, the surface shape data of the handrail 5 in a normal state where the handrail 5 is not inflated, FIG. The distance T between the front surface 10 and the rear surface 12 of the handrail 5 in a simple state is stored as reference data. The distance T is determined with an allowable width.

The control calculation unit 21 generates surface shape data representing the shape of the surface 10 of the handrail 5 in the scanned range from the two-dimensional distance data obtained by the range sensor 17. Then, a first determination for determining a change in the shape of the surface 10 is performed by comparing and analyzing the surface shape data at the time of inspection and the surface shape data of the reference data. If it is determined in the first determination that the shape of the surface 10 has changed, the control calculation unit 21 determines that a bulge abnormality has occurred in the handrail 5 and notifies the monitoring room 27.

The control calculation unit 21 obtains a third distance between the front surface 10 and the rear surface 12 of the handrail 5 at the time of inspection using the sensor distance D stored in advance and the first distance X and the second distance Y obtained at the time of inspection. And the 3rd distance at the time of a test | inspection and the 3rd distance T of reference | standard data are compared and analyzed, and the 2nd determination which determines the increase in the distance of the surface 10 and the back surface 12 is performed.

When it is determined that the shape of the front surface 10 has not changed in the first determination and the distance between the front surface 10 and the back surface 12 is determined to be increased in the second determination, the control calculation unit 21 detects the handrail 5 Therefore, the monitoring room 27 is notified.

If it is determined in the first determination that the shape of the front surface 10 has not changed, and the second determination determines that the distance between the front surface 10 and the back surface 12 has not increased, the control calculation unit 21 determines that the handrail 5 It is determined that there is no bulging abnormality.

The swelling of the handrail 5 and the surface shape data generated by the control calculation unit 21 will be described with reference to FIGS. FIG. 3A2 shows the surface shape data obtained by inspecting the handrail 5 in the state shown in FIG. Similarly, the surface shape data corresponding to FIG. 3 (b1) is FIG. 3 (b2), and the surface shape data corresponding to FIG. 3 (c1) is FIG. 3 (c2). Similarly in FIG. 4, the surface shape data corresponding to FIG. 4 (a1) is FIG. 4 (a2), and the surface shape data corresponding to FIG. 4 (b1) is FIG. 4 (b2).

3 (a1) and 3 (b1) are cases where the handrail 5 bulges normally. FIG. 3A1 shows a case where no abnormal bulge occurs in the handrail 5, and the gap 25 between the handrail guide 7 and the handrail 5 is evenly opened. The control calculation unit 21 uses FIG. 3A2 as the surface shape data of the reference data. In FIG. 3 (b1), an abnormal bulge does not occur in the handrail 5, but as the handrail 5 is driven, the handrail 5 approaches the range sensor 17 (not shown). 5 shows a case where the gaps 25 with respect to 5 are opened unevenly. FIG. 3C1 shows a case where the handrail 5 is swollen as a whole due to the swollen 30 and an abnormality has occurred.

As described above, in FIGS. 3A1, 3B1, and 3C1, the respective states are different, but FIG. 3A2 of the surface shape data obtained by the inspection using the range sensor 17 3B2 and FIG. 3C2 are all the same. 3 (a2) and 3 (b2) are surface shape data when the handrail 5 is normally swollen. FIG. 3 (c2) shows a case where the handrail 5 is swollen as a whole and an abnormality has occurred. The surface shape data is the same as in the normal case.

The control calculation unit 21 compares and analyzes the surface shape data FIG. 2B of the reference data and the surface shape data FIG. 3A 2, FIG. 3B 2, and FIG. 3C 2 at the time of inspection. Also in this case, it is determined that there is no change in the surface shape data.

FIG. 4A1 shows a case where the surface 10 of the handrail 5 partially swells and an abnormality has occurred. In FIG. 4A2 of the surface shape data obtained by inspecting the handrail 5 using the range sensor 17, the shape of the portion indicated by 41 changes corresponding to the partial bulge 31 of the surface 10 of the handrail 5. . The control calculation unit 21 compares and analyzes the surface shape data FIG. 2B of the reference data and the surface shape data FIG. 4A2 at the time of inspection, and determines that there is a change in the surface shape data.

Similarly, FIG. 4B1 is a case where the surface 10 of the handrail 5 partially swells and an abnormality occurs. FIG. 4B2 of the surface shape data obtained by inspecting the handrail 5 using the range sensor 17 also changes the shape of the portion indicated by 42 corresponding to the partial bulge 32 of the surface 10 of the handrail 5. . The control calculation unit 21 compares and analyzes the surface shape data FIG. 2B of the reference data and the surface shape data FIG. 4B2 at the time of inspection, and determines that there is a change in the surface shape data.

The inspection of the third distance between the front surface 10 and the rear surface 12 of the handrail 5 will be described with reference to FIG. FIG. 5A shows a normal case where the handrail 5 does not bulge, and FIG. 5B shows a case where the handrail 5 swells as a whole due to the overall bulge 33 and an abnormality occurs.

In FIG. 5A, the range sensor 17 obtains a first distance X1 to the surface 10 of the handrail 5 at the time of inspection. The distance sensor 19 obtains a second distance Y1 to the back surface 12 of the handrail 5 at the time of inspection. The control calculation unit 21 performs the following calculation using the sensor distance D, the first distance X1, and the second distance Y1 stored in advance, so that the front surface 10 and the rear surface 12 of the handrail 5 at the time of inspection are calculated. A third distance T1 is obtained.
T1 = D−X1−Y1
Then, the control calculation unit 21 compares and analyzes the distance T of the reference data and the third distance T1 at the time of inspection. Since T1 coincides with T, it is determined that there is no increase in the distance between the front surface 10 and the rear surface 12 of the handrail 5.

In FIG. 5B, the range sensor 17 obtains a first distance X2 to the surface 10 of the handrail 5 at the time of inspection. The distance sensor 19 obtains a second distance Y2 to the back surface 12 of the handrail 5 at the time of inspection. The control calculation unit 21 performs the following calculation using the sensor distance D, the first distance X2, and the second distance Y2 stored in advance, so that the front surface 10 and the rear surface 12 of the handrail 5 at the time of inspection are calculated. A third distance T2 is obtained.
T2 = D−X2−Y2
And the control calculating part 21 carries out comparative analysis of the distance T of reference | standard data, and the 3rd distance T2 at the time of a test | inspection. Since T2 does not coincide with T, it is determined that the distance between the front surface 10 and the rear surface 12 of the handrail 5 has increased.

The operation of the handrail inspection device 15 will be described with reference to FIG. In step S1, the control calculation unit 21 uses the sensor distance D between the range sensor 17 and the distance sensor 19 as reference data, the surface shape data of the handrail 5 in a normal state where the handrail 5 is not inflated, FIG. The distance T between the front surface 10 and the rear surface 12 of the handrail 5 in a normal state in which 5 is not inflated is stored.

In step S <b> 2, the control calculation unit 21 performs scanning control of the range sensor 17, and calculates the two-dimensional distance data of the handrail 5 at the time of the inspection measured by the range sensor 17 and the first distance to the surface 10 of the handrail 5. obtain. In addition, the control calculation unit 21 controls the distance sensor 19 to obtain the second distance to the back surface 12 of the handrail 5 at the time of inspection measured by the distance sensor 19.

In step S3, the control calculation unit 21 generates surface shape data at the time of inspection from the two-dimensional distance data obtained in step S2.

In step S4, the control calculation unit 21 compares and analyzes the surface shape data at the time of inspection and the surface shape data of the reference data. When the degree of coincidence between the two is less than a predetermined value, the control calculation unit 21 determines that the shape of the surface 10 of the handrail 5 has changed, and determines that the handrail 5 has an abnormal bulge. In step S5, the monitoring result is reported to the monitoring room 27.

In step S4, when the degree of coincidence between the surface shape data at the time of inspection and the surface shape data of the reference data is equal to or greater than a predetermined value, the control calculation unit 21 changes the shape of the surface 10 of the handrail 5. Judge that there is no. And the control calculating part 21 obtains the 3rd distance of the surface 10 and the back surface 12 of the handrail 5 at the time of a test | inspection using the sensor distance D, 1st distance, and 2nd distance in step S6.

In step S7, the control calculation unit 21 compares and analyzes the distance T in which the handrail 5 is normal and the third distance at the time of inspection. When the third distance does not coincide with the distance T, the control calculation unit 21 determines that there is an increase in the distance between the front surface 10 and the back surface 12 of the handrail 5 and determines that the handrail 5 has a bulge abnormality. In step S5, the monitoring result is reported to the monitoring room 27. When the third distance matches the distance T, the control calculation unit 21 determines that there is no increase in the distance between the front surface 10 and the back surface 12 of the handrail 5 and determines that there is no abnormality in the swelling of the handrail 5. And the control calculating part 21 returns to step S2, and repeats the next measurement.

Thus, since the range sensor 17 determines the change in the shape of the surface 10 of the handrail 5, a wide range of the surface 10 of the handrail 5 can be inspected with a simple structure. Further, since the distance to the handrail 5 obtained by the range sensor 17 is used, the distance between the front surface 10 and the rear surface 12 of the handrail 5 can be obtained with a simple structure.

Further, if it is determined in the first determination that the shape of the front surface 10 has not changed, and it is determined in the second determination that the distance between the front surface 10 and the back surface 12 has increased, an abnormality in swelling of the handrail 5 Therefore, even if the handrail 5 is swollen as a whole without changing the shape of the surface 10, it can be determined that the handrail 5 is swollen.

Further, if it is determined in the first determination that the shape of the front surface 10 has not changed, and it is determined in the second determination that the distance between the front surface 10 and the back surface 12 has not increased, an abnormality in swelling of the handrail 5 Therefore, it can be determined that the handrail 5 is not swollen even when the entire handrail 5 fluctuates with respect to the handrail inspection device 15. For this reason, the swelling of the handrail 5 can be accurately determined.

In this embodiment, the change in the shape of the front surface 10 is determined and then the increase in the distance between the front surface 10 and the back surface 12 is determined. However, the same effect can be obtained even if the order of determination is changed.

Embodiment 2. FIG.
In the first embodiment, the case where one distance sensor is provided in the handrail guide has been described. However, in the present embodiment, the case where two distance sensors are provided in the handrail guide will be described. In addition, the component of the same code | symbol as another embodiment shows the same part in this Embodiment, and it abbreviate | omits about the overlapping description.

A second embodiment will be described with reference to FIG. It is an illustration figure which shows the state which is inspecting the handrail with the handrail inspection apparatus of the passenger conveyor by Embodiment 2 of this invention. In each of FIG. 7A and FIG. 7B, two distance sensors 119a and 119b are embedded in a wide portion on the front end side of the handrail guide 107. The two distance sensors 119a and 119b are arranged so as to be lined up with an interval in the width direction of the handrail 5.

FIG. 7A shows a case where the surface 10 of the handrail 5 partially swells due to the partial bulge 34 and an abnormality occurs, and the gap 25 between the handrail guide 107 and the handrail 5 is evenly opened. The distance sensors 119a and 119b obtain the second distance y1 and the second distance y2 to the back surface 12 of the handrail 5, respectively. The control calculation unit 21 sets the average value of the second distance y1 and the second distance y2 as the second distance Y3. Then, the distance T3 between the front surface 10 and the rear surface 12 at the time of inspection is obtained from the sensor distance D, the first distance X3, and the second distance Y3, and the second determination is performed.

Further, in the control calculation unit 21, a handrail inclination value Z is stored in advance as reference data as a threshold value of the inclination of the handrail 5 in the width direction. Then, the control calculation unit 21 obtains the difference between the second distance y1 and the second distance y2 as the handrail inclination value Z3, and compares and analyzes the handrail inclination value Z of the reference data and the handrail inclination value Z3 at the time of inspection, A third determination for determining the inclination of the handrail 5 is performed.

When the handrail inclination value Z3 at the time of inspection is equal to or smaller than the handrail inclination value Z of the reference data, the control calculation unit 21 determines that the inclination of the handrail 5 does not affect the first determination. Further, when the handrail inclination value Z3 at the time of inspection is larger than the handrail inclination value Z of the reference data, it is determined that the inclination of the handrail 5 affects the first determination.

In the case of the handrail 5 in FIG. 7A, the control calculation unit 21 determines that the shape of the surface 10 of the handrail 5 has changed in the first determination, and subsequently performs the third determination. If it is determined in the third determination that the inclination of the handrail 5 does not affect the first determination, the control calculation unit 21 determines that the handrail 5 has a bulge abnormality and notifies the monitoring room 27 of the determination result. .

In FIG. 7B, an abnormal bulge does not occur in the handrail 5, but the handrail 5 is inclined with respect to the handrail guide 107, and only one end side in the width direction of the handrail 5 approaches the range sensor 17. In this example, the gap 25 between the handrail guide 107 and the handrail 5 is also opened unevenly.

In the case of the handrail 5 in FIG. 7B, the control calculation unit 21 may erroneously determine that the shape of the surface 10 of the handrail 5 has changed in the first determination. If it is determined in the first determination that the shape of the surface 10 of the handrail 5 has changed, the third determination is subsequently performed. However, if it is determined in the third determination that the inclination of the handrail 5 affects the first determination, the control calculation unit 21 cancels the first determination that the shape of the surface 10 of the handrail 5 has changed. Thereafter, when it is determined in the second determination that the distance between the front surface 10 and the back surface 12 has not increased, it is determined that no abnormality of bulge has occurred in the handrail 5.

Thus, since the 3rd determination which determines the inclination of the width direction of the handrail 5 is performed, even if it determines incorrectly that the shape of the surface 10 of the handrail 5 is changing by the 1st determination, the handrail 5 swells. It can be judged that there is not. For this reason, the swelling of the handrail 5 can be accurately determined.

DESCRIPTION OF SYMBOLS 1 Passenger conveyor 5 Handrail 5a Middle part 10 Front surface 12 Back surface 14 Laser light 15 Handrail inspection apparatus 17 Range sensor 19, 119a, 119b Distance sensor 21 Control calculating part 30, 31, 32, 33, 34 Swelling

Claims (2)

A first distance which is provided facing the surface of the handrail, scans the surface with a laser beam in a width direction intersecting with a direction in which the handrail is driven, and is a distance to the surface of the intermediate portion in the width direction And an inspection unit for obtaining two-dimensional distance data to the surface in the width direction;
A distance sensor that is provided opposite to the inspection unit across the handrail and obtains a second distance that is a distance to the back surface of the intermediate portion;
A first determination for determining a change in the shape of the surface by comparing and analyzing surface shape data generated from the two-dimensional distance data and preset reference data is performed, and the first distance and the second distance are determined. A third determination that is a distance between the front surface and the back surface obtained by using the reference data is compared and analyzed to perform a second determination for determining an increase in the distance between the front surface and the back surface, and the first A calculation unit that determines the swelling of the handrail based on the determination and the second determination;
A handrail inspection device for a passenger conveyor, comprising: A plurality of the distance sensors are provided side by side in the width direction,
The calculation unit compares and analyzes the handrail inclination value obtained using the second distance obtained by the plurality of the distance sensors and the reference data to determine the handrail inclination in a third manner, and further to the third The handrail inspection device for a passenger conveyor according to claim 1, wherein the swelling of the handrail is determined based on the determination.

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