Passenger conveyor

Abstract

The present invention provides a passenger conveyor capable of suppressing erroneous detection by an abnormality detection device. The passenger conveyor comprises: a step having a step body and a following roller, and cyclically moving; the step body having a following roller mounting portion, to which the following roller is mounted; a following rail for guiding the following roller; an abnormality detection device for detecting abnormal displacement of the following roller mounting portion relative to the following rail; and a cleaning device for removing foreign matter adhering to the following roller mounting portion.

Description

Technical Field

[0001] The present invention relates to a passenger conveyor provided with cyclically moving steps. Background Art

[0002] Patent Document 1 describes a passenger conveyor. The passenger conveyor includes a plurality of steps connected by an endless step chain and an abnormality detection device for detecting sinking of the steps. The abnormality detection device is installed below the steps on the outbound side.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2007-76823

[0006] In the above-mentioned passenger conveyor, the steps include: a step body; and a following roller rotatably mounted to a roller mounting portion located at the bottom of the step body. In the above-mentioned passenger conveyor, if the following roller breaks or falls off, causing the step to sink, the roller mounting portion shifts downward. As the downward displacement of the roller mounting portion increases, the abnormality detection device contacts the roller mounting portion. As a result, the abnormality detection device detects the step sinking.

[0007] However, when foreign matter is attached to the roller mounting portion, the abnormality detection device may come into contact with the foreign matter even if no step sinks. Therefore, there is a problem that the abnormality detection device may sometimes cause erroneous detection. Summary of the Invention

[0008] The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a passenger conveyor capable of suppressing erroneous detection by an abnormality detection device.

[0009] The passenger conveyor of the present invention comprises: a step having a step body and a following roller and moving cyclically, the step body having a following roller mounting portion, the following roller being mounted on the following roller mounting portion; a following rail guiding the following roller; an abnormality detection device detecting abnormal displacement of the following roller mounting portion relative to the following rail; and a cleaning device removing foreign matter attached to the following roller mounting portion.

[0010] Effects of the Invention

[0011] According to the present invention, it is possible to suppress erroneous detection by the abnormality detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a side view schematically showing the structure of the passenger conveyor according to the first embodiment.

[0013] Figure 2 It is an enlarged view of the Figure 1 Diagram of the steps of Section A.

[0014] Figure 3 This is a side view showing the structure of the abnormality detection device for the passenger conveyor according to the first embodiment.

[0015] Figure 4 is shown along Figure 2 A diagram showing the structure of the cleaning device and its surroundings of the passenger conveyor according to Embodiment 1 when viewed from the C direction.

[0016] Figure 5 This is a perspective view showing the structure of the cleaning device for the passenger conveyor according to the first embodiment.

[0017] Figure 6 This is a diagram showing a state in which foreign matter is attached to the following roller mounting portion in the passenger conveyor according to the first embodiment.

[0018] Figure 7 It is an enlarged view of the Figure 1 Diagram of the steps of Section B.

[0019] Figure 8 is shown along Figure 7 A diagram showing the structure of the cleaning device and its surroundings of the passenger conveyor according to Embodiment 1 when viewed from the D direction.

[0020] Label Description

[0021] 11: Truss; 12: Step; 13: Step chain; 14: Driving machine; 15: Upper reversing unit; 15a: Step sprocket; 16: Control panel; 17: Lower reversing unit; 18: Handrail; 19: Moving handrail; 20: Outward path; 21: Return path; 29: Step body; 30: Pedal; 30a: Tread; 31: Riser; 32: Step bracket; 32a: Side frame; 32b1: Edge; 32b2: Corner; 32c: Follower roller mounting unit; 32d: Detected surface; 33: Step shaft; 34: Driving roller; 35: Follower roller shaft; 36: Follower roller; 37: Driving track ; 38: Following track; 39: Moving trajectory; 40: Cleaning device; 41: Baseboard; 41a: Base; 41a1: Surface; 41b: Mounting portion; 42: Comb portion; 42a: Teeth; 42b: Cutout portion; 43: Gap; 44: Brush portion; 44a: Bristles; 50, 51, 52, 53: Abnormality detection device; 61: Shaft; 62: Cam; 63: Action piece; 64: Recess; 65: Button; 66: Switch; 70: Foreign matter; 70a: Thread end; 70b: Hair; 70c: Cotton wool; 100: Passenger conveyor; 121: Upper layer; 122: Lower layer. DETAILED DESCRIPTION

[0022] Implementation Method 1

[0023] The passenger conveyor according to the first embodiment will be described. Figure 1 1 is a side view schematically showing the structure of the passenger conveyor 100 according to the present embodiment. In the present embodiment, an escalator is exemplified as the passenger conveyor 100.

[0024] like Figure 1 As shown, the passenger conveyor 100 includes a truss 11 spanned between the floor of an upper deck 121 and the floor of a lower deck 122. The truss 11 is provided with a plurality of steps 12. The steps 12 are connected to each other by a pair of endless step chains 13 arranged on both sides of the steps 12 in the width direction.

[0025] A drive motor 14, a pair of step sprockets 15a driven by the drive motor 14, and a control panel 16 for controlling the drive motor 14 are provided at the upper layer 121 side end of the truss 11. A pair of step chains 13 are respectively wound around the pair of step sprockets 15a. The multiple steps 12 are cyclically moved by the driving force of the drive motor 14 transmitted via the step sprockets 15a and the step chains 13.

[0026] The circulation path of the step 12 includes an outgoing path 20, an upper reversing section 15, a return path 21, and a lower reversing section 17. The outgoing path 20 is a path for transporting passengers using the steps 12. The return path 21 is a path for the step 12 to move in the opposite direction of the outgoing path 20 and is located below the outgoing path 20. The moving direction of the step 12 is reversed at the upper reversing section 15 and the lower reversing section 17, respectively. The upper reversing section 15 is provided at the end portion on the upper layer 121 side of the truss 11. The lower reversing section 17 is provided at the end portion on the lower layer 122 side of the truss 11. In the circulation path of the step 12, the upper reversing section 15 is located between one end of the outgoing path 20 and one end of the return path 21, and the lower reversing section 17 is located between the other end of the outgoing path 20 and the other end of the return path 21.

[0027] When the passenger conveyor 100 is in an ascending operation, the steps 12 circulate sequentially through the outgoing path 20, the upper inverting section 15, the returning path 21, and the lower inverting section 17. When the passenger conveyor 100 is in a descending operation, the steps 12 circulate sequentially through the outgoing path 20, the lower inverting section 17, the returning path 21, and the upper inverting section 15.

[0028] A pair of handrails 18 are provided on the upper portion of the truss 11 so as to face each other across the plurality of steps 12. An annular movable handrail 19 is provided on the peripheral edge of each of the pair of handrails 18 so as to move along with the plurality of steps 12.

[0029] Figure 2 It is an enlarged view of the Figure 1 FIG. 12 of the step 12 of the A part, that is, the step 12 of the lower horizontal part located on the return path 21 side. Figure 2 , a cross section obtained by cutting the step 12 along a plane including both the up-down direction and the moving direction of the step 12 is shown. Figure 2 The bold arrow in represents the moving direction of the step 12. The step 12 moves from the lower inverting portion 17 toward the upper inverting portion 15 in the return path 21. That is, the passenger conveyor 100 performs a descending operation.

[0030] like Figure 2 As shown, the step 12 includes a step body 29, a pair of drive rollers 34, and a pair of follower rollers 36, each mounted on the step body 29. The step body 29 includes a tread 30, a riser 31, a step support 32, a step shaft 33, and a pair of follower roller shafts 35. The drive roller 34, follower roller 36, and follower roller shaft 35 are each provided on either side of the step 12 in the width direction.

[0031] The step 30 is a rectangular flat plate for passengers to ride on. When the step 12 is located on the return path 21, the tread 30a of the step 30 faces downward. On the other hand, when the step 12 is located on the outward path 20, as described later, Figure 7 As shown, the tread surface 30a faces upward and is horizontal. The riser 31 is provided in front of the step 30 during the descending operation, that is, behind the step 30 during the ascending operation.

[0032] The step bracket 32 ​​supports the tread 30 and riser 31. The step bracket 32 ​​includes a pair of side frames 32a, one located on each side in the width direction of the step 12. Each of the side frames 32a is formed into a triangular frame shape. One side 32b1 of the side frame 32a extends along the tread 30. The side frame 32a includes a tracking roller mounting portion 32c for mounting the tracking roller 36. The tracking roller mounting portion 32c protrudes outward from a corner 32b2 of the side frame 32a, which is opposite the side 32b1.

[0033] The following roller mounting portion 32c is the portion of the step body 29 farthest from the tread 30. When the step 12 is on the return path 21, that is, when the tread 30a of the tread 30 faces downward, the following roller mounting portion 32c is located at the top of the step body 29. In other words, when the step 12 is on the return path 21, the following roller mounting portion 32c forms the top of the step body 29. When the step 12 is on the outward path 20, that is, when the tread 30a of the tread 30 faces upward, the following roller mounting portion 32c is located at the bottom of the step body 29. In other words, when the step 12 is on the outward path 20, the following roller mounting portion 32c forms the bottom of the step body 29.

[0034] The following roller mounting portion 32c has a detection surface 32d that is detected by the abnormality detection device 50 or 51 described later. When the step 12 is on the return path 21, the detection surface 32d faces upward. When the step 12 is on the outward path 20, the detection surface 32d faces downward.

[0035] The step shaft 33 is located behind the step support 32 during the lowering operation. The step shaft 33 extends along the width of the step 12 and penetrates the pair of side frames 32a. The two ends of the step shaft 33 are connected to a pair of step chains 13. Each step chain 13 has the step shafts 33 for multiple steps 12 connected at regular intervals.

[0036] The driving rollers 34 are attached to both ends of the step shaft 33. That is, the driving rollers 34 are attached to the rear of the step frame 32 during the descending operation and to the front of the step frame 32 during the ascending operation via the step shaft 33.

[0037] The following roller shaft 35 is mounted on the following roller mounting portion 32c and extends along the width direction of the step 12. The following roller 36 is mounted on the following roller shaft 35. In other words, the following roller 36 is mounted on the following roller mounting portion 32c via the following roller shaft 35. The following roller 36 is positioned forward of the drive roller 34 during descending operation and rearward of the drive roller 34 during ascending operation.

[0038] A driving rail 37 and a following roller 36 are fixed to the truss 11 . When the steps 12 are pulled by the pair of step chains 13 , the driving roller 34 is guided by the driving rail 37 , and the following roller 36 is guided by the following rail 38 .

[0039] return Figure 1 The passenger conveyor 100 further includes an abnormality detection device 50 and an abnormality detection device 51. The abnormality detection device 50 and the abnormality detection device 51 are one type of safety devices included in the passenger conveyor 100.

[0040] Both the abnormality detection device 50 and the abnormality detection device 51 are located below the step 12 in the outbound path 20. Each of the abnormality detection devices 50 and 51 is configured to detect abnormal downward displacement of the tracking roller mounting portion 32c relative to the tracking rail 38, i.e., sinking of the step 12 in the outbound path 20. One abnormality detection device 50 is located on either side of the inclined portion near the entrance on the upper level 121, with the step 12 between them. Another abnormality detection device 51 is located on either side of the inclined portion near the entrance on the lower level 122, with the step 12 between them.

[0041] Figure 3This is a side view showing the structure of the abnormality detection device 50 of the passenger conveyor 100 according to this embodiment. Below, the structure of one of the two abnormality detection devices 50 will be described, but the other of the two abnormality detection devices 50 and the two abnormality detection devices 51 also have the same structure.

[0042] like Figure 3 As shown, the abnormality detection device 50 has a shaft portion 61, a cam 62, and an operating piece 63 as a mechanism for detecting abnormalities. The shaft portion 61 extends along the width direction of the step 12 and is supported by a bearing (not shown) so as to be rotatable. The cam 62 has a circular plate shape coaxial with the shaft portion 61 and is fixed to the shaft portion 61. A groove-shaped recess 64 extending in the axial direction is formed on a portion of the outer peripheral surface of the cam 62. The operating piece 63 is fixed to the shaft portion 61 and protrudes upward from the shaft portion 61.

[0043] Furthermore, the abnormality detection device 50 includes a switch 66 having a push button 65. The push button 65 is inserted into the recess 64 of the cam 62 in a non-pressed state.

[0044] When viewed along the moving direction of the step 12 without sinking, the following roller mounting portion 32c and the actuating piece 63 are separated. Therefore, when the step 12 is not sinking, the actuating piece 63 does not contact the following roller mounting portion 32c. The state of not sinking the step 12 includes not only a state in which the following roller mounting portion 32c is completely free of downward displacement, but also a state in which the downward displacement of the following roller mounting portion 32c relative to the following rail 38 is within an appropriate range.

[0045] If the following roller 36 is damaged or detached, the step 12 will sink, and the following roller mounting portion 32c will shift downward. When the downward displacement of the following roller mounting portion 32c relative to the following rail 38 increases beyond an appropriate range, the action piece 63 contacts the detected surface 32d of the following roller mounting portion 32c when the step 12 passes through the abnormality detection device 50. The action piece 63 in contact with the following roller mounting portion 32c is pressed by the following roller mounting portion 32c in the direction of movement of the step 12, thereby rotating together with the shaft 61 and cam 62. When the cam 62 rotates, the button 65 is pressed by the cam 62, and the switch 66 is activated. As a result, the abnormal downward displacement of the following roller mounting portion 32c, that is, the sinking of the step 12, is detected in the abnormality detection device 50. When the sinking of the step 12 is detected, an abnormality detection signal is output from the abnormality detection device 50 to the control panel 16 , and the operation of the passenger conveyor 100 is stopped under the control of the control panel 16 .

[0046] return Figure 1The passenger conveyor 100 further includes an abnormality detection device 52 and an abnormality detection device 53. The abnormality detection device 52 and the abnormality detection device 53 are one type of safety devices included in the passenger conveyor 100.

[0047] The abnormality detection device 52 and the abnormality detection device 53 are both arranged above the step 12 in the return path 21. The abnormality detection device 52 and the abnormality detection device 53 are respectively configured to detect abnormal upward displacement of the following roller mounting portion 32c relative to the following rail 38, that is, the floating of the step 12 in the return path 21. The abnormality detection device 52 is provided on both sides of the left and right sides of the inclined portion near the upper layer 121, separated by the step 12. The abnormality detection device 53 is provided on both sides of the left and right sides of the inclined portion near the lower layer 122, separated by the step 12. Both abnormality detection devices 52 and the two abnormality detection devices 53 have the function of Figure 3 The abnormality detection device 50 shown is a structure in which it is turned upside down.

[0048] Although not shown in the figure, when the step 12 does not float, the operating pieces of the two abnormality detection devices 52 and the two abnormality detection devices 53 do not contact the following roller mounting portion 32c. Here, the state in which the step 12 does not float includes not only a state in which the following roller mounting portion 32c does not shift upward at all, but also a state in which the upward displacement of the following roller mounting portion 32c relative to the following rail 38 is within an appropriate range.

[0049] When the step 12 lifts, the following roller mounting portion 32c shifts upward. When the upward displacement of the following roller mounting portion 32c increases beyond an appropriate range, the actuating piece contacts the following roller mounting portion 32c. Consequently, the abnormality detection devices 52 and 53 detect the abnormal upward displacement of the following roller mounting portion 32c, i.e., the lifting of the step 12. The abnormality detection devices that detect the lifting of the step 12 output an abnormality detection signal to the control panel 16.

[0050] In this embodiment, each abnormality detection device 50, 51, 52, and 53 is a contact-type abnormality detection device having an operating piece 63 that contacts the following roller mounting portion 32c. However, each abnormality detection device 50, 51, 52, and 53 may also be a non-contact abnormality detection device having a proximity sensor that detects abnormal vertical displacement of the following roller mounting portion 32c without contacting the following roller mounting portion 32c.

[0051] return Figure 2The passenger conveyor 100 further includes a cleaning device 40. The cleaning device 40 is located above the step 12 in the return path 21, along the movement path 39 of the following roller mounting portion 32c. The cleaning device 40 is configured to remove foreign matter such as trash adhering to the following roller mounting portion 32c. In this embodiment, the cleaning device 40 is configured to remove foreign matter such as trash adhering to the detection surface 32d of the following roller mounting portion 32c. The cleaning device 40 is fixed to the truss 11 so as to face the detection surface 32d.

[0052] Figure 4 is shown along Figure 2 The figure shows the structure of the cleaning device 40 and its surroundings of the passenger conveyor 100 of this embodiment when viewed from the C direction. Figure 2 The C direction is a direction along the moving direction of the step 12 . Figure 5 It is a perspective view showing the structure of the cleaning device 40 of the passenger conveyor 100 according to the present embodiment.

[0053] like Figure 4 and Figure 5 As shown, the cleaning device 40 has a metal substrate 41 formed into an L-shaped cross-section. The substrate 41 has: a flat base 41a; a mounting portion 41b, which is provided on one end side of the base 41a and bent relative to the base 41a; and a comb-shaped portion 42, which is provided on the other end side of the base 41a. The comb-shaped portion 42 is formed into a comb shape with a plurality of ends like a fork. The comb-shaped portion 42 has a plurality of teeth 42a and at least one cutout portion 42b formed between two adjacent teeth 42a. The plurality of teeth 42a protrude from the base 41a in one direction within the same plane as the base 41a. In Figure 4 In the left-right direction, the width of the comb-shaped portion 42 is wider than the width of the following roller mounting portion 32c.

[0054] The mounting portion 41b is attached to the truss 11. The base 41a and comb-shaped portion 42 are positioned along the movement trajectory 39 of the follower roller mounting portion 32c. The base 41a and comb-shaped portion 42 are positioned a distance L1 from the movement trajectory 39. Specifically, when viewed along the movement direction of the step 12, the base 41a and comb-shaped portion 42 are positioned a distance L1 from the follower roller mounting portion 32c. Distance L1 is, for example, approximately 5 mm. A gap 43 is formed between the comb-shaped portion 42 and the movement trajectory 39. The comb-shaped portion 42 is arranged so that the protruding direction of the multiple teeth 42a is parallel to and opposite to the movement direction of the step 12.

[0055] Furthermore, the cleaning device 40 includes a brush portion 44 that contacts the follow-up roller mounting portion 32c. The brush portion 44 is provided on a surface 41a1 of the base portion 41a on the step bracket 32 ​​side. Figure 4In the left-right direction, the width of the brush portion 44 is wider than the width of the following roller mounting portion 32c. The brush portion 44 includes multiple resin bristles 44a implanted on the surface 41a1 of the base portion 41a. Each bristle 44a extends perpendicularly from the surface 41a1 of the base portion 41a to reach or extend beyond the movement path 39 of the following roller mounting portion 32c. In other words, the length L2 of each bristle 44a is greater than the distance L1. As a result, at least some of the multiple bristles 44a contact the detection surface 32d of the following roller mounting portion 32c.

[0056] The brush portion 44 is positioned forward of the comb portion 42 in the direction of movement of the step 12. Specifically, the brush portion 44 is positioned rearward of the comb portion 42 in the direction of relative movement of the cleaning device 40 relative to the step 12. Thus, the following roller mounting portion 32c passes the brush portion 44 after passing the comb portion 42.

[0057] Figure 6 : is a diagram showing a state in which foreign matter 70 is attached to the following roller mounting portion 32c in the passenger conveyor 100 of this embodiment. Figure 6 In the illustrated state, foreign matter 70 integrally formed of thread ends 70 a , hair 70 b , cotton lint 70 c , etc. is entangled on the following roller mounting portion 32 c and the surrounding following roller shaft 35 .

[0058] As the following roller mounting portion 32c approaches the cleaning device 40 as the step 12 moves, foreign matter 70 attached to the following roller mounting portion 32c first contacts the comb portion 42. As the following roller mounting portion 32c further approaches the cleaning device 40, the teeth 42a of the comb portion 42 penetrate the foreign matter 70. The foreign matter 70 embedded in the teeth 42a is then torn off and removed by the teeth 42a as the step 12 moves. As a result, most of the foreign matter 70 is removed from the following roller mounting portion 32c.

[0059] Thereafter, the following roller mounting portion 32c contacts the brush portion 44. Remains of the foreign matter 70 remaining on the following roller mounting portion 32c are scraped off by the bristles 44a of the brush portion 44 as the steps 12 move. Thus, the foreign matter 70 is removed from the following roller mounting portion 32c.

[0060] Assume that the step 12 with the foreign matter 70 attached to the following roller mounting portion 32c passes through Figure 3In the abnormality detection device 50 shown, there is a possibility that the operating piece 63 contacts the foreign object 70, causing the abnormality detection device 50 to falsely detect the abnormality. Here, a false detection by the abnormality detection device 50 refers to a situation where abnormal vertical displacement of the step 12 is detected even though no abnormal vertical displacement of the step 12 has occurred. In this embodiment, the cleaning device 40 can remove the foreign object 70 attached to the follower roller mounting portion 32c, thereby suppressing false detection by the abnormality detection device 50.

[0061] The installation position of the cleaning device 40 is not limited to Figure 1 The portion A may be at any position as long as it is along the circulation path of the step 12 . Figure 7 It is an enlarged view of the Figure 1 FIG. 1 is a diagram of the step 12 at the B portion, ie, the step 12 at the lower horizontal portion on the outgoing path 20 side. Figure 8 is shown along Figure 7 A diagram showing the structure of the passenger conveyor and its surroundings of this embodiment when viewed from the D direction. Figure 7 The D direction is the direction along the moving direction of the step 12. Figure 7 and Figure 8 In the example shown, the cleaning device 40 is provided at a lower horizontal position along the outgoing path 20. The steps 12 move from the lower inverting portion 17 toward the upper inverting portion 15 in the outgoing path 20. Figure 7 and Figure 8 In the example shown, the passenger conveyor 100 performs an ascending operation.

[0062] like Figure 7 and Figure 8 As shown in FIG. 1 , when the step 12 is located on the outward path 20, that is, when the tread 30a of the pedal 30 faces upward, the following roller mounting portion 32c is located at the lowest position in the step body 29. The cleaning device 40 is provided below the step 12 in the outward path 20 and along the moving track 39 of the following roller mounting portion 32c. The cleaning device 40 is configured to Figure 2 and Figure 4 The structure of the cleaning device 40 shown is a structure obtained by turning it upside down. The positional relationship between the cleaning device 40 and the following roller mounting portion 32c is as follows: Figure 2 and Figure 4 The positional relationship between the cleaning device 40 and the following roller mounting portion 32c shown is a positional relationship obtained by reversing the positional relationship upside down. Figure 7 and Figure 8 The structure shown can also be obtained with Figure 2 and Figure 4 The same effect as shown in the structure.

[0063] The cleaning device 40 may be installed along the upper horizontal portion or inclined portion of the outward path 20 or along the upper horizontal portion or inclined portion of the return path 21. Furthermore, the cleaning device 40 may be installed along the upper inverting portion 15 or the lower inverting portion 17. Even if the cleaning device 40 is installed in these locations, the same effect can be achieved.

[0064] The cleaning device 40 may be provided only on the left side or only on the right side relative to the moving direction of the step 12, or may be provided on both sides. If the abnormality detection device for detecting abnormal vertical displacement of the tracking roller mounting portion 32c is provided on both sides of the step 12, it is preferred that the cleaning device 40 is also provided on both sides.

[0065] exist Figure 2 or Figure 7 In the illustrated structure, when the moving direction of the step 12 is reversed, it is sufficient to reverse the direction of the cleaning device 40. Even in this case, the same effect can be obtained.

[0066] Furthermore, the cleaning device 40 may include only one of the comb portion 42 and the brush portion 44. Even in this case, the foreign matter 70 attached to the following roller mounting portion 32c can be removed by the comb portion 42 or the brush portion 44, thereby suppressing erroneous detection by each of the abnormality detection devices 50, 51, 52, and 53.

[0067] In the present embodiment, an escalator is exemplified as the passenger conveyor 100 , but the present embodiment is also applicable to other passenger conveyors such as a moving walkway.

[0068] As described above, the passenger conveyor 100 of this embodiment includes a step 12, a following rail 38, abnormality detection devices 50, 51, 52, and 53, and a cleaning device 40. The step 12 is configured to include a step body 29 and a following roller 36, and circulates. The step body 29 includes a following roller mounting portion 32c, and the following roller 36 is mounted on the following roller mounting portion 32c. The following rail 38 is configured to guide the following roller 36. The abnormality detection devices 50, 51, 52, and 53 are each configured to detect abnormal vertical displacement of the following roller mounting portion 32c relative to the following rail 38. The cleaning device 40 is configured to remove foreign matter 70 attached to the following roller mounting portion 32c.

[0069] When foreign matter 70 is attached to the following roller mounting portion 32c, there is a possibility that each of the abnormality detection devices 50, 51, 52, and 53 will cause an erroneous detection. In this regard, the above-described configuration allows the cleaning device 40 to remove foreign matter 70 attached to the following roller mounting portion 32c, thereby preventing erroneous detection by each of the abnormality detection devices 50, 51, 52, and 53.

[0070] In the passenger conveyor 100 of this embodiment, the cleaning device 40 includes a comb-shaped portion 42 having a plurality of teeth 42a that protrude in one direction. The comb-shaped portion 42 is arranged along the movement trajectory 39 of the follower roller mounting portion 32c. The protruding direction of the plurality of teeth 42a is opposite to the movement direction of the step 12. With this structure, the movement of the step 12 can be utilized to tear off and remove foreign matter 70 attached to the follower roller mounting portion 32c using the plurality of teeth 42a. Therefore, the foreign matter 70 can be removed more reliably. Consequently, erroneous detection by each of the abnormality detection devices 50, 51, 52, and 53 can be more reliably suppressed.

[0071] In the passenger conveyor 100 of this embodiment, the cleaning device 40 includes a brush portion 44 that contacts the following roller mounting portion 32c. This configuration allows the brush portion 44 to scrape off foreign matter 70 adhering to the following roller mounting portion 32c by utilizing the movement of the steps 12, thereby more reliably removing the foreign matter 70. Consequently, erroneous detections by the abnormality detection devices 50, 51, 52, and 53 can be more reliably suppressed.

[0072] In the passenger conveyor 100 of this embodiment, the cleaning device 40 includes the comb-shaped portion 42 and the brush portion 44. The brush portion 44 is positioned forward of the comb-shaped portion 42 in the direction of movement of the step 12. With this configuration, after most of the foreign matter 70 attached to the follower roller mounting portion 32c is torn off and removed by the plurality of teeth 42a, the remaining debris of the foreign matter 70 is scraped off by the brush portion 44, thereby more reliably removing the foreign matter 70. Consequently, erroneous detections by each of the abnormality detection devices 50, 51, 52, and 53 can be more reliably suppressed.

Claims

1. A passenger conveyor comprising: a step having a step body and a following roller, and cyclically moving, wherein the step body has a following roller mounting portion, and the following roller is mounted on the following roller mounting portion; A following rail, which guides the following roller; an abnormality detection device that detects abnormal displacement of the following roller mounting portion relative to the following rail; and a cleaning device for removing foreign matter attached to the following roller mounting portion; The cleaning device includes a comb-shaped portion having a plurality of teeth protruding in one direction. The comb-shaped portion is provided along a movement trajectory of the follower roller mounting portion, and is arranged at a position away from the movement trajectory by a predetermined distance. A protruding direction of the plurality of teeth is opposite to a moving direction of the steps.

2. The passenger conveyor according to claim 1, wherein The cleaning device includes a brush portion that contacts the follower roller mounting portion.

3. The passenger conveyor according to claim 1, wherein The cleaning device includes a brush portion that contacts the follower roller mounting portion. The brush portion is arranged forward of the comb portion in the moving direction of the step.

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