JP2021066537A - Detection device of step tread lifting and detection system of step tread lifting - Google Patents

Abstract

To provide a detection device of a step tread lifting capable of detecting the tread lifting of each one step of an escalator.SOLUTION: A detection device 12 of a step tread lifting brings a detection rod 12a into sequentially contact with treads 5b of multiple steps 5 of an escalator 1 and measures the displacement magnitude of the treads. A camera 12h is installed in the position that includes the detection rod 12a and the treads 5b before/after the detection rod 12a in the imaging range at the same time, and images them. A data processing device 16 identifies a demarcation 5c by the brightness change of the image, separates the steps 5 one by one, and detects the lifting magnitude of each one step of the tread.SELECTED DRAWING: Figure 5

Description

The present invention relates to a step tread detection device and a step tread lift detection system for detecting the lift of a step tread provided on an escalator.

The escalator includes a frame installed in a building structure and a plurality of steps provided in the frame and connected in an endless manner that circulates and moves. An endless chain is connected to the plurality of steps, and the plurality of steps circulate and move by rotationally driving the chain. This step involves external factors (for example, pebbles are caught in the corrugated plate part of the tread plate, or the corrugated plate part of the tread plate is deformed due to improper handling, and stress is repeatedly applied when a person rides on it) and the installation environment (outdoors). The tread plate part, which is the part on which a person rides, may be lifted due to rain on the tread plate part and rusting at the site.

Conventionally, as a method of inspecting the lift of a step tread, a detector (for example, a variable resistor and a variable resistor) that outputs a detection signal corresponding to the lift of the step tread as in Patent Document 1 is output. A method has been proposed in which a measuring instrument for inputting a detection signal) is provided and the amount of lift of the tread plate of the step is detected based on the detection signal output from the detector.

Japanese Unexamined Patent Publication No. 2018-24489

However, in the prior art, although the amount of lift of the tread of the step is detected based on the detection signal output from the detector, it is not possible to indicate in which step the detected lift occurs.

Therefore, in order to solve the above-mentioned inconvenience, it is an object of the present invention to provide a step tread plate lift detection device and a step tread plate lift detection system capable of detecting the lift of a tread plate for each step by dividing each step. ..

In order to achieve the above object, the present invention includes a detection member that sequentially contacts the tread plate of a plurality of steps of the escalator, a displacement sensor that detects the displacement of the detection member in a direction perpendicular to the tread plate, and a detection member together with the detection member. A camera is provided at a position where the treads before and after contacting the treads are simultaneously included in the imaging range, and the output of the displacement sensor and the output of the camera can be used to detect the lifting of the treads for each step.

According to the present invention, it is possible to provide a step tread plate lift detection device and a step tread plate lift detection system capable of detecting the lift of a tread plate for each step by dividing each step.

It is a schematic diagram which shows the whole escalator by one Embodiment of this invention. It is a schematic diagram which shows the whole step by one Embodiment of this invention. It is a figure which shows the appearance of the step tread plate lift detection device by one Embodiment of this invention. It is a figure which shows the left side surface of the step tread plate lift detection device by one Embodiment of this invention. It is a figure which shows the right side surface (inside the control part case) of the step tread plate lift detection device by one Embodiment of this invention. It is a figure which shows the installation state of the step tread plate lift detection device by one Embodiment of this invention. It is a figure which shows the image which the step tread plate lift detection apparatus by one Embodiment of this invention takes. It is a figure which shows the method of dividing a step based on the image which the step tread plate lift detection apparatus by one Embodiment of this invention has taken. It is a sequence diagram which shows the processing procedure of the step tread plate lift detection system by one Embodiment of this invention.

Hereinafter, an embodiment of the step tread plate lift detection device and the step tread plate lift detection system according to the present invention will be described with reference to the drawings.

FIG. 1 is a schematic view showing the entire escalator 1 which is the object of the present invention. As shown in FIG. 1, the escalator 1 includes a frame body 2 installed in a building structure, a control panel 3, a balustrade 4, a plurality of steps 5, a handrail 6, and a drive mechanism 7. ing.

The drive mechanism 7 is composed of an electric motor (not shown) and a speed reducer (not shown), and electric power is supplied to the electric motor (not shown) from the control panel 3. The operation of the electric motor (not shown) is controlled by the control panel 3. A belt member (not shown) is wound around a drive pulley of an electric motor (not shown), and the belt member (not shown) is wound around a driven pulley of a speed reducer (not shown). As a result, the rotational force of the electric motor (not shown) is transmitted to the speed reducer (not shown) via the belt member (not shown).

Further, a transmission chain 8 is wound around a transmission sprocket of a speed reducer (not shown). The transmission chain 8 is wound around the drive sprocket 9. Then, the driving force of the drive mechanism 7 is transmitted to the drive sprocket 9 via the transmission chain 8, and the drive sprocket 9 rotates.

A step chain 11 is wound around the drive sprocket 9 and the driven sprocket 10. Then, as the drive sprocket 9 rotates, the driven sprocket 10 and the step chain 11 rotate.

Further, the frame body 2 is provided with a guide member (not shown), and the plurality of steps 5 are movably supported by a guide member (not shown). The plurality of steps 5 are endlessly connected via a step chain 11. The plurality of steps 5 are guided by a guide member (not shown) attached to the frame body 2 and circulate on the outward route side and the return route side. Passengers are transported on step 5 of moving on the outbound route side.

Next, step 5 for detecting the amount of lift of the tread plate 5b by the step tread plate lift detection device 12 will be described with reference to FIG. FIG. 2 is a schematic view showing the entire step 5.

Step 5 includes a frame main body 5a and a tread plate 5b on which a person rides. Further, a demarcation line is provided on the outer edge of the tread plate 5b to call attention to prevent the step boundary from getting on. In order to ensure high visibility, it is preferable to use a color (for example, yellow) for the demarcation line, which has a significantly different brightness from other areas of the tread plate. In the following description, the demarcation line will be abbreviated as "demarcation". In FIG. 2, a demacation 5c is shown on the outer edge of the tread plate 5b. The tread plate 5b has a corrugated plate shape, and is fixed to the frame body 5a by welding at a plurality of locations.

Next, the appearance of the step tread plate lift detection device 12 used for detecting the lift amount of the tread plate 5b in each step 5 will be described with reference to FIG. As shown in FIG. 3, the step tread plate lift detection device 12 includes a detection rod 12a, a control unit 12b, and a main body unit 12c.

The detection rod 12a is a detection member that sequentially contacts the tread plates 5b of the plurality of steps 5. The detection rod 12a follows the tread plate 5b in step 5 in accordance with the floating state of the tread plate 5b in step 5, and is displaced in a direction perpendicular to the tread plate 5b. The control unit 12b is provided with a displacement sensor 12g, which is a means for detecting the amount of lift of the tread plate 5b in step 5. Similarly, a camera 12h is installed in the control unit 12b. The installation position of the camera 12h is a position that simultaneously includes the detection rod 12a, the tread plate 5b before contacting the detection rod 12a, and the tread plate 5b after contacting the detection rod 12a in the imaging range. A detection rod 12a and a control unit 12b are fixed to the main body portion 12c.

Next, a detection mechanism for detecting the amount of lift of the tread 5b in step 5 of the step tread lift detection device 12 will be described with reference to FIG. As shown in FIG. 4, the detection rod 12a is fixed to the tip of the movable arm 12d rotatably supported by the shaft 12e of the main body 12c. The detection rod 12a is a mechanism that is displaced in a direction perpendicular to the tread plate, that is, up and down by rotating around the shaft 12e of the main body portion 12c according to the state of the tread plate 5b in step 5.

Further, the movable arm 12d is provided with a sensor light receiving plate 12f, which is displaced up and down like the detection rod 12a. The laser beam 15 output from the displacement sensor 12g is applied to the sensor light receiving plate 12f to reflect the laser light 15, and the displacement sensor 12g receives the reflected light and measures the distance from the displacement sensor 12g to the sensor light receiving plate 12f. The amount of lift of the tread plate 5b of 5 can be calculated.

Next, the configuration in the control unit 12b of the step tread plate lift detection device 12 will be described with reference to FIG. As shown in FIG. 5, a displacement sensor 12g, a camera 12h, and various substrates 12i are provided in the control unit 12b.

The displacement sensor 12g emits the laser beam 15 toward the sensor light receiving plate 12f, that is, downward, receives the reflected light from the sensor light receiving plate 12f, and outputs the distance to the sensor light receiving plate 12f. Since the sensor light receiving plate 12f is displaced up and down together with the detection rod 12a according to the floating state of the tread plate 5b in step 5, the amount of lifting of the tread plate 5b in step 5 can be calculated from the distance to the sensor light receiving plate 12f.

The camera 12h is also fixed downward like the displacement sensor 12g. The fixed position of the camera 12h is a position that simultaneously includes the detection rod 12a, the tread plate 5b before contacting the detection rod 12a, and the tread plate 5b after contacting the detection rod 12a in the imaging range 12j. For example, the position of the camera 12h is set so that the detection rod 12a and the tread plate 5b in step 5 are imaged with the detection rod 12a as the center. By using such a setting, it is possible to divide step 5 one by one from the positional relationship between the detection rod 12a, the tread plate 5b of step 5, and the demacation 5c.

The various substrates 12i include a substrate that operates as an external output unit that outputs the displacement amount detected by the displacement sensor 12g (for example, the distance to the sensor light receiving plate 12f) and the image pickup result by the camera 12h in association with each other.

Next, the installation state of the step tread plate lift detection device 12 on the local escalator 1 will be described with reference to FIG. As shown in FIG. 6, when the step tread plate lift detection device 12 is installed on the local escalator 1, the main body 12c of the step tread plate lift detection device 12 is attached to the comb plate 13 of the upper landing with, for example, a magnet or double-sided tape. Fix it. At this time, the step tread plate lift detection device 12 is installed so that the detection rod 12a touches the tread plate 5b of step 5. In this state, the escalator 1 is operated to detect the amount of lift of the tread plate 5b in each step 5.

Further, the step tread plate lift detection device 12 is connected to the data processing device 16 by various boards 12i so as to be able to communicate by wire or wirelessly. The data processing device 16 receives the displacement amount detected by the displacement sensor 12g from the step tread plate lift detection device 12 and the imaging result by the camera 12h in association with each other.

The data processing device 16 has a data processing unit that calculates the amount of lift of the tread plate 5b in step 5 based on the received displacement amount. Further, the data processing unit identifies the boundary of step 5 from the received imaging result, divides step 5 into individual sheets, and calculates the amount of lift of the tread plate for each sheet in step 5 based on the displacement amount. Can be done. The boundary of step 5 is identified by identifying the demacation 5c. For example, if the brightness of the image captured by the camera 12h shows a specific change pattern, the presence of the demacation 5c can be identified.

By connecting the step tread plate lift detection device 12 and the data processing device 16 in this way, it is possible to obtain a step tread plate lift detection system that detects the lift amount of the tread plate 5b for each step 5.

Next, the image of the camera 12h captured in the installed state shown in FIG. 6 will be described with reference to FIG. First, the image captured by the camera 12h includes an image of the detection rod 12a. Then, if an image is taken with the detection rod 12a in contact with the vicinity of the central portion of step 5, the detection rod 12a is projected in the center as shown in FIG. 7A, and the treads of step 5 are projected above and below the detection rod 12a. 5b is projected. When the escalator 1 is operated in this state, the step 5 moves, and the demacation 5c provided at the end of the step 5 is projected on the lower side of the detection rod 12a as shown in FIG. 7B. When step 5 is further moved, the demacation 5c is projected so as to overlap the detection rod 12a as shown in FIG. 7C. When step 5 further moves, the demacation 5c is projected on the upper side of the detection rod 12a. This series of steps will be repeated each time step 5 moves.

Since it is important that the demacation 5c overlaps the detection rod 12a, in the step tread plate lift detection device 12, the diameter of the detection rod 12a is 30 mm so that most of the demacation 5c overlaps the total width of 40 mm. It is supposed to be. That is, the detection rod 12a has a size that partially covers the image of the demacation 5c in the imaging range of the camera 12h. Further, it is preferable that the color of the detection rod 12a is darker than that of the demacation 5c. For example, it may be the same color as the tread plate 5b.

Next, the process of dividing step 5 one by one from the camera 12h image will be described with reference to FIG. As already described in FIGS. 7A to 7D, when the step 5 moves, the positional relationship between the detection rod 12a, the tread plate 5b of the step 5, and the demacation 5c changes. Step 5 can be divided one by one depending on the position of the image projected on the camera 12h.

Specifically, the moving image captured by the camera 12h is cut out into an image for each frame, and the overall brightness of the image is calculated as a profile value. The calculated profile value is a graph 14 as shown in FIG. 8 (d).

When the demacation 5c is projected on the lower side of the detection rod 12a as shown in FIG. 8A, the profile value becomes higher than when the detection rod 12a and the tread plate 5b in step 5 are projected. When the escalator 1 is operated in this state, step 5 moves, the demacation 5c overlaps with the detection rod 12a as shown in FIG. 8B, and the profile value is higher than that in FIG. 8A. Will also be low. When step 5 is further moved, the demacation 5c is projected on the upper side of the detection rod 12a as shown in FIG. 8C, and the profile value becomes high again. By repeating this operation, the graph 14 of FIG. 8 (d) is obtained, and as shown in FIG. 8 (b), the valley portion where the profile value is low is detected and used as the delimiter of step 5. This makes it possible to divide step 5 one by one.

Next, the processing procedure of the step tread plate lift detection system will be described with reference to FIG. As a preliminary preparation, the step tread plate lift detection device 12 is fixed to the comb plate 13 of the upper landing of the escalator 1 with, for example, a magnet or double-sided tape. At this time, the step tread plate lift detection device 12 is installed so that the detection rod 12a touches the tread plate 5b of step 5. When the installation is completed, it is connected to a building power supply (not shown) or a battery (not shown), and a power switch (not shown) is operated to turn on the power of the step tread lift detection device 12. After that, the data processing device 16 and the step tread plate lift detection device 12 are connected by wire or wirelessly, and necessary information such as local specifications is input. The information to be input can include, for example, a product number that identifies the escalator 1. Further, the number and width of steps 5 of the escalator 1 may be included.

When the preparation of the step tread lift detection system is completed, the worker performs a start operation on the step tread lift detection device 12 and operates the escalator 1. Then, after the escalator 1 is made to make at least one lap or more, the escalator 1 is stopped, and the step tread plate lift detection device 12 is terminated.

As shown in FIG. 9, the step tread plate lift detection device 12 accepts the start operation (S1) and starts recording the displacement amount and the moving image (S2). After that, the step tread plate lift detection device 12 receives the end operation (S3), ends the displacement amount and the recording of the moving image (S4), and outputs the displacement amount and the moving image recording to the data processing device 16 in association with each other. (S5), the process is terminated.

When the data processing device 16 acquires the displacement amount and the recording of the moving image in association with each other from the step tread plate lifting detection device 12 (S11), the image is cut out from the moving image (S12), and the portion having a high profile value is calculated from the cut out image. (S12). The data processing device 16 detects the portion of the valley where the profile value temporarily drops in the vicinity of the portion where the profile value is high (S14), and divides step 5 into individual sheets (S15).

The data processing device 16 calculates the amount of lift of the tread plate 5b for each sheet in step 5 from the correspondence between the division of step 5 and the amount of displacement (S16). If there is a step in which the floating amount exceeds the specified value (S17; Yes), the data processing device 16 outputs the corresponding step as an abnormal step (S18), and ends the process. On the other hand, if there is no step in which the amount of floating exceeds the specified value (S17; No), no abnormality is output (S19), and the process is terminated.

As described above, in the step tread lift detection system of the present embodiment, the detection rod 12a of the step tread lift detection device 12 is sequentially brought into contact with the tread 5b of a plurality of steps 5 of the escalator 1 to measure the displacement amount. , The detection rod 12a and the tread plates 5b before and after the detection rod 12a are simultaneously imaged by the camera 12h provided at a position included in the imaging range. Then, the data processing device 16 identifies the demacation 5c from the change in the brightness of the image, divides the step 5 into each step 5, and detects the amount of lift of the tread for each step.

Therefore, the worker can quickly confirm the designated state of step 5 and perform maintenance work such as replacement of step 5 without having to identify in which step the abnormality occurred. In addition, regardless of the presence or absence of abnormality, the amount of lift of the tread plate for each step can be accumulated and analyzed, and used for adjusting the timing for maintenance.

In the present embodiment, the step tread lift detection system in which the step tread lift detection device 12 and the data processing device 16 are connected has been described as an example, but the data processing unit of the data processing device 16 is used as the step tread lift detection device. 12 may be provided so that the device can be operated by itself.

Further, in the present embodiment, the case where the detection rod 12a is used as the detection member has been described, but any shape can be detected as long as the shape covers the image of the demacation 5c at least partially in the imaging range of the camera 12h. Members can be used. For example, a detection member in which a plurality of rollers are connected may be used.

Further, in the present embodiment, the configuration in which the detection member is rotatably supported is illustrated, but the detection member is provided with a detection member that can slide in the direction perpendicular to the tread plate 5b, and the amount of slide of the detection member is reduced. Any configuration can be used, such as obtaining it as a displacement amount.

Further, the camera 12h shown in the present embodiment can be shared with other uses. As an example, the tread plate 5b of step 5 is marked to identify step 5, and the identification of step 5 can be performed by image recognition.

Further, in the present embodiment, the configuration in which the amount of lift is detected in each step 5 and the amount of lift is evaluated to output the presence or absence of an abnormality has been described as an example, but the presence or absence of lift in each step 5 is directly determined. It can also be implemented as a detection configuration.

Further, in the present embodiment, although the escalator 1 has been described, the amount of lift of the tread plate 5b in step 5 may be inspected for an auto line (including skewing) installed at an airport or the like. Further, although the step tread plate lift detection device 12 is installed on the comb plate 13 of the upper landing, it may be installed on the lower landing.

The present invention is not limited to the above-described embodiments and modifications, and other embodiments that can be considered within the scope of the technical idea of the present invention are also included in the present invention as long as the gist of the present invention is not deviated. Is included in the range of. Moreover, it can be carried out in various forms as long as it does not deviate from the gist of the present invention. For example, each configuration and each process exemplified in each of the above-described embodiments and modifications may be integrated or separated as appropriate according to the mounting form and processing efficiency.

1 ... escalator, 2 ... frame body, 3 ... control panel, 4 ... balustrade, 5 ... step, 5a ... frame body, 5b ... tread plate, 5c ... hoax Application, 6 ... Handrail, 7 ... Drive mechanism, 8 ... Transmission chain, 9 ... Drive sprocket, 10 ... Driven sprocket, 11 ... Step chain, 12 ... Step tread Lifting detection device, 12a ... detection rod, 12b ... control unit, 12c ... main body unit, 12d ... movable arm, 12e ... axis, 12f ... sensor light receiving plate, 12g ... Displacement sensor, 12h ... camera, 12i ... various substrates, 12j ... imaging range, 13 ... comb plate, 14 ... graph, 15 ... laser light, 16 ... data processing device

Claims (10)

In a step tread plate lift detection device that detects the lift of the tread plate of the step by an escalator having a plurality of steps connected in an endless manner that moves in a circular manner.
A detection member that sequentially contacts the treads of the plurality of steps,
A displacement sensor that detects the displacement of the detection member in the direction perpendicular to the tread, and
A step characterized by comprising a camera provided at a position where the detection member, the tread plate before contacting the detection member, and the tread plate after contacting the detection member are simultaneously included in the imaging range. Tread plate lift detection device. The step tread plate lift detection device according to claim 1, further comprising a data processing unit that calculates the lift amount of the tread plate in the step based on the displacement amount of the detection member detected by the displacement sensor. The boundary of the step is identified from the image pickup result by the camera, the step is divided into each step, and the amount of lift of the tread plate for each step is calculated based on the displacement amount of the detection member detected by the displacement sensor. The step tread plate lift detection device according to claim 1, further comprising a data processing unit. The demacation line of the step is identified from the imaging result by the camera, the step is divided into individual steps, and the amount of lift of the tread plate for each step is based on the displacement amount of the detection member detected by the displacement sensor. The step tread plate lift detection device according to claim 1, further comprising a data processing unit for calculating. The demacation line of the step is identified from the change pattern of the brightness of the image captured by the camera, the step is divided into individual sheets, and the step 1 is based on the displacement amount of the detection member detected by the displacement sensor. The step tread plate lift detection device according to claim 1, further comprising a data processing unit that calculates the amount of lift of the tread plate for each sheet. The demacation line of the step is identified from the change pattern of the brightness of the image captured by the camera, the step is divided into individual sheets, and the step 1 is based on the displacement amount of the detection member detected by the displacement sensor. It also has a data processing unit that calculates the amount of lift of the treads for each sheet.
The first aspect of the present invention is that the detection member has a dimension that partially covers an image of the demarcation line in the imaging range, and the change pattern is a temporary decrease in the brightness of the image. The step tread plate lift detection device described. The step tread plate lift detection device according to claim 1, further comprising an external output unit that externally outputs the displacement amount of the detection member detected by the displacement sensor and the image pickup result by the camera. A movable arm that supports the detection member and
A shaft that movably supports the movable arm in a direction perpendicular to the tread plate is further provided.
The displacement sensor is fixed to the main body having the shaft, measures the distance to the movable arm, and measures the distance.
The step tread plate lift detection device according to any one of claims 1 to 7, wherein the camera is fixed to the main body and captures an image including an image of the detection member. The step tread plate lift detection device according to any one of claims 1 to 7, wherein the displacement sensor measures a slide amount of the detection member supported so as to be slidable. In a step tread lift detection system that detects the lift of the tread of the step by an escalator having a plurality of steps connected in an endless manner that moves in a circular manner.
A detection member that sequentially contacts the treads of the plurality of steps,
A displacement sensor that detects the displacement of the detection member in the direction perpendicular to the tread, and
A camera provided at a position where the detection member, the tread plate before contacting the detection member, and the tread plate after contacting the detection member are simultaneously included in the imaging range.
The boundary of the step is identified from the image pickup result by the camera, the step is divided into individual steps, and the amount of lift of the tread plate for each step is calculated based on the displacement amount of the detection member detected by the displacement sensor. Step tread plate lift detection system characterized by being equipped with a data processing unit.

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