JP2013001499A - Passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a passenger conveyor including a tread inclination detector for quickly detecting abnormality of a tread.SOLUTION: The passenger conveyor includes a treat inclination detector comprising a sensor part 7, a reflection plate 6 and a controller, the sensor part 7 detects the presence/absence of abnormality of the tread by transmitting a medium to the reflection plate 6 of the tread passing through the vicinity of the riding floor of upper and lower floors and receiving the medium reflected from the reflection plate 6, and transmits response signals based on the detection result to the controller. The controller confirms the travel state of the tread 1 by the response signals transmitted from the sensor part 7, and controls the travel of the tread when abnormality appears in the response signals.

Description

  Embodiments of the present invention relate to a passenger conveyor.

  Passenger conveyors such as escalators are equipped with a step abnormality detection device that detects the lift and inclination of steps. Further, when the guide rail that guides the step changes from a straight portion to a curved portion, a pressing rail is attached to prevent the step from being lifted or tilted structurally.

  However, when the conventional pressing rail and the step abnormality detecting device are used, the step abnormality detecting device is attached to the holding rail, so that the step abnormality detecting device does not operate unless the step rear wheel passes through the holding rail. . For example, when the rear wheel of the step is lifted by some impact or the like and gets over the holding rail, the conventional step abnormality detection device cannot detect this. If a step breaks down and the step continues to run in a lifted or tilted state, the step may come into contact with other equipment or collide with it, causing significant damage to the passenger conveyor and stopping the passenger conveyor for a long time. Will have to be repaired. For this reason, it was necessary to quickly detect the running abnormality of the step and minimize the failure.

  An embodiment of the present invention focuses on such a problem, and an object of the present invention is to provide a passenger conveyor provided with a step inclination detecting device that quickly detects a step abnormality.

A passenger conveyor according to an embodiment of the present invention includes a step chain connected endlessly and circulated, a pair of front wheels having a front wheel shaft, and a pair of rear wheels having a rear wheel shaft, the front wheel shaft being A plurality of steps that are connected to the step chain and circulate between the upper and lower floors in synchronism with the circulation movement of the step chain, and a pair of guide rails that guide and support each of the front and rear wheels of the step. The passenger conveyor comprises a sensor unit, a reflector, and a control device, and the sensor unit transmits a medium to the reflector of the step that passes near the boarding floor of the upper and lower floors and is reflected from the reflector. The medium is received, a response signal based on the transmission and reception of the medium is transmitted to the control device, the reflector is attached to the step, reflects the medium transmitted from the sensor unit, and the control device It is characterized by having a step inclination detecting device for checking the running state of the step by a response signal transmitted from the sensor unit and controlling the step running when an abnormality appears in the response signal. is there.

It is a partially omitted side view showing an outline of the upper floor of the escalator according to the embodiment of the present invention. The positional relationship of the reflector in the normal state of the step in the escalator which concerns on Example 1 of this invention, and a sensor part is shown, (a) is a partially abbreviated side view, (b) is abbreviate | omitted partially in the figure It is a front view. It is a partially-omission front view which shows the positional relationship of the reflecting plate and the sensor part of the state in which the step in the escalator which concerns on Example 1 of this invention inclined in the width direction. In the escalator which concerns on Example 1 of this invention, it is an example of the detection signal of the sensor part which received the medium reflected from the reflecting plate, Comprising: (a) in a figure shows a normal driving state, (b) ) Indicates the running state at the time of abnormality. It is a perspective view of the reflecting plate in the escalator which concerns on Example 2 and Example 3 of this invention. The positional relationship of the reflector in the normal state of the step in the escalator which concerns on Example 2 of this invention, and a sensor part is shown, (a) is a partially abbreviated side view, (b) is abbreviate | omitted partially in the figure It is a front view. It is a partially-omission front view which shows the positional relationship of the reflecting plate and sensor part of the state in which the step in the escalator which concerns on Example 2 of this invention inclines slightly in the width direction. The positional relationship of the reflector in the normal state of the step in the escalator which concerns on Example 3 of this invention, and a sensor part is shown, (a) is a partially abbreviated side view, (b) is abbreviate | omitted partially in the figure It is a front view. It is a partially-omitted side view which shows the positional relationship of the reflecting plate and sensor part of the state in which the step in the escalator which concerns on Example 3 of this invention inclines slightly in the front-back direction. It is a perspective view of the reflecting plate in the escalator which concerns on Example 4 of this invention. The positional relationship of the reflector in the normal state of the step in the escalator which concerns on Example 4 of this invention, and a sensor part is shown, (a) is a partially abbreviated side view, (b) is abbreviate | omitted in the figure It is a front view.

  Examples of passenger conveyors according to embodiments of the present invention will be described below with reference to the drawings. In addition, Example 2-Example 4 are the examples of a change of the reflecting plate in Example 1. FIG.

  FIG. 1 shows an outline of an escalator, and FIGS. 2 to 4 show a first embodiment of the present invention. In FIG. 1, A indicates an escalator. The escalator A includes a plurality of steps 1 connected endlessly, and railings A1 are erected on both sides of the steps 1 along the moving direction of the steps 1. A skirt guard A2 is provided at the lower part. The step 1 is configured to circulate and move on a predetermined track by a drive source (not shown), and the step 1 is moved from the lower floor side to the upper floor side and from the upper floor side by the circular movement of the step 1. Passengers who got on the step 1 can move to the upper and lower floors while moving to the floor side. That is, the step 1 includes a pair of front wheels 1a disposed at both ends thereof via a front wheel shaft and a pair of rear wheels 1b disposed at both ends thereof via a rear wheel shaft, and the front wheel shaft has an endless shape. And a step chain that is circulated and moved by a drive source. In addition, a pair of guide rails 2a and 2b for guiding and supporting the front wheel 1a and the rear wheel 1b so as to circulate on the upper and lower floors are arranged. Therefore, in synchronization with the circulation movement of the step chain, the front wheel 1a travels along the guide rail 2a and the rear wheel 1b travels along the guide rail 2b, so that the step 1 circulates between the landing floors on the upper and lower floors. It will be. Reference numerals 3a and 3b denote auxiliary guide rails provided at a portion where the step 1 moves horizontally. The auxiliary guide rails 3a and 3b prevent the step 1 from being lifted or tilted. Reference numeral 4 denotes a comb. The comb 4 is attached to the tip of a comb plate installed on the landing floor 5 and has a plurality of slits so that cleats on the tread surface of the step 1 can pass through.

  The escalator A is provided with a step inclination detecting device. The step inclination detecting device includes a sensor unit 7, a reflecting plate 6, and a control device (not shown).

  The sensor unit 7 has a function of transmitting a medium to the reflecting plate 6 of the step 1 passing near the boarding / exiting floors of the upper and lower floors. The sensor unit 7 has a function of receiving the medium reflected from the reflecting plate 6. Further, the sensor unit 7 has a function of transmitting a response signal based on transmission and reception of the medium by the sensor unit 7 to the control device. In the present embodiment, for example, an optical sensor that senses retroreflected light is used as the sensor used in the sensor unit 7. The medium is not limited to an optical sensor as long as it can be reflected by the reflecting plate 6, and a sensor that detects ultrasonic waves or lasers may be used. In this case, a medium such as ultrasonic waves or lasers may be used as the reflecting plate. Use a reflector that reflects the light. As shown in FIGS. 2A and 2B, the sensor unit 7 receives the reflected light 8 that is reflected from the reflecting plate 6 and returns when the light transmitted from the sensor unit 7 is normal, and the guide rail. 2a and 2b are fixedly installed in the vicinity of the upper and lower floors 5 where the straight part changes to the curved part.

  The reflecting plate 6 is for reflecting the medium transmitted from the sensor unit 7, and as shown in FIGS. 2A and 2B, the reflecting plate 6 of the step 1 moving on the guide rails 2a and 2b. Installed in the center of the back side of the tread. The reflector 6 in the present embodiment uses a mirror surface body because it uses light as a medium transmitted from the sensor unit 7, and in particular, in this embodiment, a mirror surface body having a flat reflection surface is used.

  The control device detects whether the running state of the step 1 is normal or abnormal based on the response signal transmitted from the sensor unit 7. Further, when an abnormality is detected from the response signal and it is determined that the traveling state of the step 1 is abnormal, the driving of the escalator A is controlled so that the traveling of the step 1 is stopped or switched to low speed operation. Note that when the control device detects an abnormality by the response signal, the control device may be provided with a function of notifying the occurrence of the abnormality.

  The operation of the step inclination detecting device having the above-described configuration will be described. The sensor unit 7 always emits light, and the reflector 6 attached to the back surface of the step 1 passes above the light projection of the sensor unit 7. It is configured. Therefore, when the step 1 passes over the light projection of the sensor unit 7, the light transmitted from the sensor unit 7 is reflected by the reflecting plate 6. Under normal conditions, as shown in FIGS. 2 (a) and 2 (b), the reflected light is reflected. 8 returns to the sensor unit 7 and is received by the sensor unit 7, and the sensor unit 7 transmits a response signal based on the transmission and reception of light by the sensor unit 7 to the control device.

  Accordingly, when there is no abnormality in the step 1, the step 1 always circulates at regular intervals if the rotational speed of the passenger conveyor is constant, so that the light transmitted at regular intervals is reflected on the sensor unit 7. Come back. In that case, a regular response signal as shown in FIG. 4 (a) is obtained, and the control device detects the regular response signal to determine that the vehicle is in a normal normal traveling state and to travel on the step 1. continue. However, when the step 1 is inclined and traveling, for example, when the step rear wheel 1b is lifted from the guide rail 2b, the reflected light 8 does not return to the sensor unit 7 as shown in FIG. In this case, as shown in FIG. 4 (b), when the inclined step 1 passes, the sensor unit 7 does not receive the reflected light 8 and therefore does not transmit it to the control device. The control device determines that the running state is abnormal by detecting this abnormal response signal, and controls the escalator A to stop or switch to low speed operation. In this way, when there is some abnormality in the step 1, for example, when traveling while tilting or when the step 1 is missing, a normal waveform is not shown, and in that case, the escalator A is stopped or operated at a low speed.

  As described above, since the escalator A according to the present embodiment includes the step inclination detecting device, the step rear wheel 1b is separated from the guide rail 2b before the step 1 reaches the upper floor, for example, as shown in FIG. Since it is possible to detect abnormalities in the step 1 such as floating, it is possible to prevent damage to other equipment such as the step 1 colliding with the comb 4 by stopping the escalator A or operating at low speed. Can be minimized.

  5 to 7 show a second embodiment of the present invention. In this embodiment, the reflection plate 6 in the first embodiment is changed to a reflection plate 6a processed into an arc shape as shown in FIG. 5, and other configurations are the same as those in the first embodiment. Therefore, the description of Example 1 is used except for the reflector 6a.

  The step inclination detecting device provided in the escalator A according to the present embodiment includes a sensor unit 7, a reflecting plate 6a, and a control device (not shown).

  The sensor unit 7 has a function of transmitting a medium to the reflecting plate 6a of the step 1 passing near the boarding / exiting floors of the upper and lower floors. The sensor unit 7 has a function of receiving the medium reflected from the reflecting plate 6a. Further, the sensor unit 7 has a function of transmitting a response signal based on transmission and reception of the medium by the sensor unit 7 to the control device. In the present embodiment, for example, an optical sensor that senses retroreflected light is used as the sensor used in the sensor unit 7. The medium is not limited to an optical sensor as long as it is a medium that can be reflected by the reflecting plate 6a, and a sensor that detects ultrasonic waves or lasers may be used. In that case, the reflecting plate reflects ultrasonic waves or lasers. Use a reflector. As shown in FIGS. 6A and 6B, the sensor unit 7 receives the reflected light 8 that is reflected from the reflecting plate 6a and returns when the light transmitted from the sensor unit 7 is normal, and the guide rail. 2a and 2b are fixedly installed in the vicinity of the upper and lower floors 5 where the straight part changes to the curved part.

  The reflecting plate 6a is for reflecting the medium transmitted from the sensor unit 7, and as shown in FIGS. 6 (a) and 6 (b), the reflector 1a moves on the guide rails 2a and 2b. Installed in the center of the back side of the tread. The reflecting plate 6a in this embodiment uses light as a medium transmitted from the sensor unit 7, and therefore uses a mirror surface. In particular, the reflecting plate 6a in this embodiment has a circular curved concave section. The center axis of the arc is attached so as to be orthogonal to the front wheel shaft and the rear wheel shaft of the step 1.

  The control device detects whether the running state of the step 1 is normal or abnormal based on the response signal transmitted from the sensor unit 7. Further, when an abnormality is detected from the response signal and it is determined that the traveling state of the step 1 is abnormal, the driving of the escalator A is controlled so that the traveling of the step 1 is stopped or switched to low speed operation. Note that when the control device detects an abnormality by the response signal, the control device may be provided with a function of notifying the occurrence of the abnormality.

  The operation of the step inclination detecting device having the above-described configuration will be described. The sensor unit 7 always emits light, and the reflection plate 6a attached to the back surface of the step 1 passes above the light projection of the sensor unit 7. It is configured. Therefore, when the step 1 passes over the light projection of the sensor unit 7, the light transmitted from the sensor unit 7 is reflected by the reflecting plate 6a. Under normal conditions, as shown in FIGS. 6 (a) and 6 (b), the reflected light is reflected. 8 returns to the sensor unit 7 and is received by the sensor unit 7, and the sensor unit 7 transmits a response signal based on the transmission and reception of light by the sensor unit 7 to the control device.

  Accordingly, when there is no abnormality in the step 1, the step 1 always circulates at regular intervals if the rotational speed of the passenger conveyor is constant, so that the light transmitted at regular intervals is reflected on the sensor unit 7. Come back. In that case, a regular response signal as shown in FIG. 4A in the first embodiment is obtained, and the control device detects the regular response signal, thereby determining that the vehicle is in a normal normal traveling state. Continue driving 1 However, when the step 1 is inclined and traveling, for example, as shown in FIG. 3 in the first embodiment, when the step rear wheel 1b is clearly lifted from the guide rail, the sensor unit as shown in FIG. The reflected light 8 does not return to 7. In that case, as shown in FIG. 4B in the first embodiment, when the inclined step 1 passes, the sensor unit 7 does not receive the reflected light 8 and therefore does not transmit it to the control device. The control device determines that the running state is abnormal by detecting this abnormal response signal, and controls the escalator A to stop or switch to low speed operation. To do. In this way, when there is some abnormality in the step 1, for example, when traveling while tilting or when the step 1 is missing, a normal waveform is not shown, and in that case, the escalator A is stopped or operated at a low speed.

  Since the reflecting plate 6 in the first embodiment uses a mirror body having a flat reflecting surface, if the step 1 tilts even a little, for example, if the step 1 tilts due to a slight lift of the front and rear wheels on one side, the tilt 3 is not an abnormality and is within an allowable range, the reflected light 8 does not return to the sensor unit 7 as shown in FIG.

  Therefore, in this embodiment, the reflecting plate 6a is processed so that the cross section thereof becomes an arc-shaped concave curved surface, and is attached so that the center axis of the arc is orthogonal to the front wheel axis and the rear wheel axis of the step 1. . With this configuration, as shown in FIG. 7, when a slight inclination in the width direction of the step 1 that is not abnormal occurs in the step 1, the reflected light 8 returns to the sensor unit 7. Since the sensor unit 7 receives the signal, the control device can cope with the judgment as normal running.

  8 and 9 show a third embodiment of the present invention. In this embodiment, the reflection plate 6 in Example 1 is changed to a reflection plate 6a processed into an arc shape as shown in FIG. 5 and the mounting direction of the reflection plate 6a in Example 2 is changed. Other configurations are the same as those in the first and second embodiments. Therefore, the description of Example 1 and Example 2 is used except that the mounting direction of the reflection plate 6a is changed.

  The step inclination detecting device provided in the escalator A according to the present embodiment includes a sensor unit 7, a reflecting plate 6a, and a control device (not shown).

  The sensor unit 7 has a function of transmitting a medium to the reflecting plate 6a of the step 1 passing near the boarding / exiting floors of the upper and lower floors. The sensor unit 7 has a function of receiving the medium reflected from the reflecting plate 6a. Further, the sensor unit 7 has a function of transmitting a response signal based on transmission and reception of the medium by the sensor unit 7 to the control device. In the present embodiment, for example, an optical sensor that senses retroreflected light is used as the sensor used in the sensor unit 7. The medium is not limited to an optical sensor as long as it is a medium that can be reflected by the reflecting plate 6a, and a sensor that detects ultrasonic waves or lasers may be used. In that case, the reflecting plate reflects ultrasonic waves or lasers. Use a reflector. As shown in FIGS. 8A and 8B, the sensor unit 7 receives the reflected light 8 that is reflected from the reflecting plate 6a when the light transmitted from the sensor unit 7 returns to the normal state, and guide rails. 2a and 2b are fixedly installed in the vicinity of the upper and lower floors 5 where the straight part changes to the curved part.

  The reflector 6a is for reflecting the medium transmitted from the sensor unit 7, and as shown in FIGS. 8 (a) and 8 (b), the reflector 1a moves on the guide rails 2a and 2b. Installed in the center of the back side of the tread. The reflecting plate 6a in this embodiment uses light as a medium transmitted from the sensor unit 7, and therefore uses a mirror surface. In particular, the reflecting plate 6a in this embodiment has a circular curved concave section. The center axis of the arc is attached in parallel to the front wheel shaft and the rear wheel shaft of the step 1.

  The control device detects whether the running state of the step 1 is normal or abnormal based on the response signal transmitted from the sensor unit 7. Further, when an abnormality is detected from the response signal and it is determined that the traveling state of the step 1 is abnormal, the driving of the escalator A is controlled so that the traveling of the step 1 is stopped or switched to low speed operation. Note that when the control device detects an abnormality by the response signal, the control device may be provided with a function of notifying the occurrence of the abnormality.

  The operation of the step inclination detecting device having the above-described configuration will be described. The sensor unit 7 always emits light, and the reflection plate 6a attached to the back surface of the step 1 passes above the light projection of the sensor unit 7. It is configured. Therefore, when the step 1 passes over the light projection of the sensor unit 7, the light transmitted from the sensor unit 7 is reflected by the reflecting plate 6a, and in normal times, as shown in FIGS. 8A and 8B, the reflected light is reflected. 8 returns to the sensor unit 7 and is received by the sensor unit 7, and the sensor unit 7 transmits a response signal based on the transmission and reception of light by the sensor unit 7 to the control device.

  Accordingly, when there is no abnormality in the step 1, the step 1 always circulates at regular intervals if the rotational speed of the passenger conveyor is constant, so that the light transmitted at regular intervals is reflected on the sensor unit 7. Come back. In that case, a regular response signal as shown in FIG. 4A in the first embodiment is obtained, and the control device detects the regular response signal, thereby determining that the vehicle is in a normal normal traveling state. Continue driving 1 However, when the step 1 is inclined and traveling, for example, when the left and right rear wheels 1 b are clearly lifted from the guide rail, the reflected light 8 does not return to the sensor unit 7. In that case, as shown in FIG. 4B in the first embodiment, when the inclined step 1 passes, the sensor unit 7 does not receive the reflected light 8 and therefore does not transmit it to the control device. The control device determines that the running state is abnormal by detecting this abnormal response signal, and controls the escalator A to stop or switch to low speed operation. To do. In this way, when there is some abnormality in the step 1, for example, when traveling while tilting or when the step 1 is missing, a normal waveform is not shown, and in that case, the escalator A is stopped or operated at a low speed.

  Since the reflecting plate 6 in the first embodiment uses a mirror body having a flat reflecting surface, if the step 1 tilts even a little, for example, if the step 1 tilts due to a slight lift of the front and rear wheels on one side, the tilt 3 is not an abnormality and is within an allowable range, the reflected light 8 does not return to the sensor unit 7 as shown in FIG. Further, the reflector 6a according to the second embodiment is configured to be processed so that the cross section thereof becomes an arc-shaped concave curved surface and attached so that the central axis of the arc is orthogonal to the front wheel axis and the rear wheel axis of the step 1. If a slight inclination in the width direction that does not cause an abnormality occurs in the step 1, the reflected light 8 returns to the sensor unit 7 and is received by the sensor unit 7, so the control device determines that the vehicle is running normally. However, when the step 1 is inclined due to, for example, slight lifting of the left and right rear wheels 1b, the sensor unit 7 Therefore, the reflected light 8 does not return and it is determined that the vehicle is not running normally.

  Therefore, in this embodiment, the reflecting plate 6a is processed so that the cross section thereof becomes an arc-shaped concave curved surface, and the center axis of the arc is attached in parallel to the front wheel shaft and the rear wheel shaft of the step 1. With this configuration, as shown in FIG. 9, if the step 1 has a slight inclination in the front-rear direction of the step 1 that is not abnormal, the reflected light 8 returns to the sensor unit 7. Since the sensor unit 7 receives the signal, the control device can cope with the judgment as normal running.

  10 and 11 show a fourth embodiment of the present invention. In this embodiment, the reflecting plate 6 in the first embodiment is changed to a reflecting plate 6b processed into a spherical shape as shown in FIG. 10, and other configurations are the same as those in the first embodiment. Therefore, the description of Example 1 is cited except for the reflector 6b.

  The step inclination detecting device provided in the escalator A according to the present embodiment includes a sensor unit 7, a reflector 6b, and a control device (not shown).

  The sensor unit 7 has a function of transmitting a medium to the reflecting plate 6b of the step 1 passing near the boarding / exiting floors of the upper and lower floors. The sensor unit 7 has a function of receiving the medium reflected from the reflecting plate 6b. Further, the sensor unit 7 has a function of transmitting a response signal based on transmission and reception of the medium by the sensor unit 7 to the control device. In the present embodiment, for example, an optical sensor that senses retroreflected light is used as the sensor used in the sensor unit 7. The medium is not limited to an optical sensor as long as it can be reflected by the reflector 6b, and a sensor that detects ultrasonic waves or lasers may be used. In this case, the ultrasonic wave or laser is reflected as a reflector. Use a reflector. As shown in FIGS. 11 (a) and 11 (b), the sensor unit 7 receives the reflected light 8 that is reflected from the reflecting plate 6b and returns when the light transmitted from the sensor unit 7 is normal, and the guide rail. 2a and 2b are fixedly installed in the vicinity of the upper and lower floors 5 where the straight part changes to the curved part.

  The reflector 6b is for reflecting the medium transmitted from the sensor unit 7, and as shown in FIGS. 11 (a) and 11 (b), the reflector 1b moves on the guide rails 2a and 2b. Installed in the center of the back side of the tread. The reflector 6b in this embodiment uses light as a medium transmitted from the sensor unit 7, and therefore uses a mirror body. In particular, the reflector 6b in this embodiment is processed so as to be a spherical concave surface. It has been subjected.

  The control device detects whether the running state of the step 1 is normal or abnormal based on the response signal transmitted from the sensor unit 7. Further, when an abnormality is detected from the response signal and it is determined that the traveling state of the step 1 is abnormal, the driving of the escalator A is controlled so that the traveling of the step 1 is stopped or switched to low speed operation. Note that when the control device detects an abnormality by the response signal, the control device may be provided with a function of notifying the occurrence of the abnormality.

  The operation of the step inclination detecting device having the above-described configuration will be described. The sensor unit 7 always emits light, and the reflection plate 6b attached to the back surface of the step 1 passes above the light projection of the sensor unit 7. It is configured. Therefore, when the step 1 passes over the light projection of the sensor unit 7, the light transmitted from the sensor unit 7 is reflected by the reflecting plate 6b, and in a normal state, as shown in FIGS. 11 (a) and 11 (b), the reflected light is reflected. 8 returns to the sensor unit 7 and is received by the sensor unit 7, and the sensor unit 7 transmits a response signal based on the transmission and reception of light by the sensor unit 7 to the control device.

  Accordingly, when there is no abnormality in the step 1, the step 1 always circulates at regular intervals if the rotational speed of the passenger conveyor is constant, so that the light transmitted at regular intervals is reflected on the sensor unit 7. Come back. In that case, a regular response signal as shown in FIG. 4A in the first embodiment is obtained, and the control device detects the regular response signal, thereby determining that the vehicle is in a normal normal traveling state. Continue driving 1 However, when the step 1 is inclined and traveling, for example, as shown in FIG. 3 in the first embodiment, when the step rear wheel 1b is clearly lifted from the guide rail, the sensor unit as shown in FIG. The reflected light 8 does not return to 7. In that case, as shown in FIG. 4B in the first embodiment, when the inclined step 1 passes, the sensor unit does not receive the reflected light 8 and therefore does not transmit it to the control device. The control device determines that the running state is abnormal by detecting this abnormal response signal and controls the escalator A to stop or switch to low speed operation. . In this way, when there is some abnormality in the step 1, for example, when traveling while tilting or when the step 1 is missing, a normal waveform is not shown, and in that case, the escalator A is stopped or operated at a low speed.

  Since the reflecting plate 6 in the first embodiment uses a mirror body having a flat reflecting surface, if the step 1 tilts even a little, for example, if the step 1 tilts due to a slight lift of the front and rear wheels on one side, the tilt 3 is not an abnormality and is within an allowable range, the reflected light 8 does not return to the sensor unit 7 as shown in FIG. Further, the reflector 6a according to the second embodiment is configured to be processed so that the cross section thereof becomes an arc-shaped concave curved surface and attached so that the central axis of the arc is orthogonal to the front wheel axis and the rear wheel axis of the step 1. If a slight inclination in the width direction that does not cause an abnormality occurs in the step 1, the reflected light 8 returns to the sensor unit 7 and is received by the sensor unit 7, so the control device determines that the vehicle is running normally. However, when the step 1 is inclined due to, for example, slight lifting of the left and right rear wheels 1b, the sensor unit 7 Therefore, the reflected light 8 does not return and it is determined that the vehicle is not running normally. Further, the reflector 6a according to the third embodiment is processed so that the cross section thereof becomes an arc-shaped concave curved surface, and the center axis of the arc is configured to be mounted in parallel with the front wheel shaft and the rear wheel shaft of the step 1. If a slight tilt in the front-rear direction that does not cause an abnormality occurs in 1, the reflected light 8 returns to the sensor unit 7 and is received by the sensor unit 7, so that the control device determines that it is normal running. It is possible to cope with this, but when a slight inclination in the width direction that does not cause an abnormality occurs in the step 1, even if the inclination is not an abnormality and is within an allowable range, the reflected light 8 is reflected on the sensor unit 7. Will not return and it will be judged that it is not normal driving.

  Therefore, in this embodiment, the reflector 6b is processed and attached so as to be a spherical concave surface. With this configuration, if the step 1 is in any direction and does not cause an abnormality and is slightly tilted, the reflected light 8 returns to the sensor unit 7 and is received by the sensor unit 7. The device can be adapted to determine normal travel. Thus, since the reflecting plate 6b is processed into a spherical surface, for example, it corresponds to various inclinations such as a slight lift of one wheel, and light can be returned to the sensor unit 7 as no abnormality has occurred.

  In addition, although the present Example demonstrated the escalator, it is applicable also to the step in a moving sidewalk. Further, the embodiment is an exemplification, and the scope of the invention is not limited to the embodiment.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

A ... escalator A1 ... balustrade A2 ... skirt guard 1 ... step 1a ... front wheel 1b ... rear wheel 2a ... guide rail 2b ... guide rail 3a ... Auxiliary guide rail 3b ... Auxiliary guide rail 4 ... Comb 5 ... Getting on / off floor 6 ... Reflector 6a ... Reflector 6b ... Reflector 7 ...・ Sensor part 8 ・ ・ ・ ・ Reflected light

Claims (4)

A step chain connected endlessly and circulated;
A pair of front wheels having a front wheel shaft and a pair of rear wheels having a rear wheel shaft are provided, and the front wheel shaft is connected to the step chain and circulates between the landing floors on the upper and lower floors in synchronization with the circulation movement of the step chain. A plurality of steps to
In a passenger conveyor comprising a pair of guide rails for guiding and supporting each of the front and rear wheels of the step,
It consists of a sensor unit, a reflector, and a control device.
The sensor unit transmits a medium to the reflecting plate of the step passing near the boarding floor of the upper and lower floors, receives the medium reflected from the reflecting plate, and controls a response signal based on the transmission and reception of the medium. To the device,
The reflector is attached to the step, reflects the medium transmitted from the sensor unit,
The control device includes a step inclination detecting device that checks the running state of the step by a response signal transmitted from the sensor unit and controls the running of the step when an abnormality appears in the response signal. Characteristic passenger conveyor.   In the reflecting plate, the reflecting plate is processed so that the cross section thereof becomes an arc-shaped concave curved surface, and the arc is attached so that the center axis of the arc is orthogonal to the front wheel axis and the rear wheel axis of the step. The passenger conveyor according to claim 1.   In the reflecting plate, the reflecting plate is processed so that the cross section thereof becomes an arc-shaped concave curved surface, and the center axis of the arc is attached in parallel to the front wheel shaft and the rear wheel shaft of the step. The passenger conveyor according to claim 1.   The passenger conveyor according to claim 1, wherein the reflecting plate is processed so that the reflecting plate becomes a spherical concave curved surface.

Images