WO2008032352A1

WO2008032352A1 - Passenger conveyor

Info

Publication number: WO2008032352A1
Application number: PCT/JP2006/317968
Authority: WO
Inventors: Masahiko Nawata
Original assignee: Mitsubishi Electric Corporation
Priority date: 2006-09-11
Filing date: 2006-09-11
Publication date: 2008-03-20

Abstract

In a passenger conveyor, a comb meshing with tread cleats is provided at a landing. A tilt limitation member is provided in a main frame, and, near the landing, the tilt limitation member faces the lower part of a drive roller installation section. When the drive roller installation section is displaced downward by an abnormality of a drive roller, the tilt limitation member receives the drive roller installation section to limit the tilt of a tread body.

Description

Specification

Passenger conveyor

Technical field

[0001] The present invention relates to a passenger conveyor in which a pair of drive rollers and a pair of follow-up rollers are provided at each step. Background art

[0002] In a conventional passenger conveyor safety device, a lever that is rotated by a roller shaft when the roller sinks is disposed in the travel path of the step, and when the rotation of the lever is detected by a detection switch, Traveling is stopped (see, for example, Patent Document 1).

[0003] Patent Document 1: JP-A 63-310492

Disclosure of the invention

Problems to be solved by the invention

[0004] In the conventional passenger conveyor safety device as described above, if the detection switch fails, for example, if the drive roller (rear roller) is derailed in the Down operation, the steps interfere with the comb at the lower entry / exit section, There was a risk of damaging the comb. In addition, when the driving roller (front roller) is removed during the Up operation, the step enters the lower part of the comb with a gap between the upper landing comb and the step surface (upper surface). There was a risk that foreign objects could get caught between the stairs and the tread surface of the step, which could interfere with the operation of the passenger conveyor and damage the comb. Furthermore, even if the detection switch is not malfunctioning, the steps described above may occur a little while the rotation of the lever is detected and the force is actually stopped until the step is actually stopped. I had sex.

[0005] The present invention has been made to solve the above-described problems, and more reliably prevents a gap from being generated between the comb and the step due to breakage or wheel removal of the drive roller. The purpose of the present invention is to obtain a passenger competitor that can prevent foreign matter from being caught between the door and the tread board or the comb from being damaged.

Means for solving the problem

[0006] A passenger conveyor according to the present invention includes a main frame, a tread on which a plurality of tread cleats are formed, and a pair Step body including a drive roller mounting portion and a pair of follower roller mounting portions, a pair of rotatable drive rollers provided on the drive roller mounting portion, and a pair of rotatable followers provided on the follower roller mounting portion A plurality of steps connected endlessly and circulated in the main frame, provided on the main frame, a drive rail for guiding the movement of the drive roller, and provided on the main frame to move the follower roller The following rails to guide, the comb that is provided at the boarding / alighting part, and that interlaces with the treadle cleats, and the main frame that faces the lower part of the driving roller mounting part near the boarding / alighting part. A tilt restraining member is provided that receives the mounting portion of the drive opening when the mounting portion is displaced downward and suppresses the tilt of the step body.

Brief Description of Drawings

FIG. 1 is a side view showing an escalator according to Embodiment 1 of the present invention.

2 is a front view showing steps near the lower boarding / exiting portion of FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a cross-sectional view showing a main part of an escalator according to Embodiment 2 of the present invention.

[Fig. 5] Fig. 5 is a front view showing steps near the boarding / exiting portion of the escalator according to Embodiment 3 of the present invention.

FIG. 6 is a cross-sectional view showing a main part of an escalator according to Embodiment 4 of the present invention.

FIG. 7 is a side view showing an inclination suppressing member for an escalator according to Embodiment 5 of the present invention.

8 is a front view showing the tilt suppressing member of FIG.

FIG. 9 is a side view showing a state where the step shaft of FIG. 7 rides on the inclination suppressing member.

FIG. 10 is a front view showing the tilt suppressing member of FIG.

FIG. 11 is a side view showing an inclination suppressing member for an escalator according to Embodiment 6 of the present invention.

12 is a front view showing the inclination suppressing member of FIG.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

Embodiment 1.

FIG. 1 is a side view showing an escalator according to Embodiment 1 of the present invention. Smell Main frame 1 is bridged between the upper and lower floors. A pair of rails 2 are erected on both sides of the main frame 1 in the width direction. A drive unit 3 is installed at the upper floor side end of the main frame 1. A drive sprocket 4 is provided in the vicinity of the drive machine 3. The driving force of the driving machine 3 is transmitted to the driving sprocket 4 via the driving chain 5.

An upper step sprocket 6 that rotates together with the drive sprocket 4 is provided coaxially with the drive sprocket 4. A lower step sprocket 7 is provided at the lower end of the main frame 1. An endless step chain 8 is wound around the upper step sprocket 6 and the lower step sprocket 7.

[0010] A plurality of steps 9 are attached to the step chain 8 at predetermined intervals. That is, the step 9 is connected endlessly via a step chain 8. Further, the step 9 is circulated in the main frame 1 by the driving force of the drive 3. In FIG. 1, only some steps 9 are shown.

Each balustrade 2 is provided with a moving handrail 10 that circulates in synchronization with the steps 9. The driving force of the driving machine 3 is transmitted to the moving handrail 10 through the driving chain 5, the driving sprocket 4 and the handrail driving device 11.

A control device 12 that controls the operation of the driving machine 3 is installed at the upper floor side end of the main frame 1. At the upper part of the lower end of the main frame 1 is a lower floor board 13 that forms the floor of the lower boarding / exiting section. At the upper part of the upper floor side end portion of the main frame 1, an upper floor board 14 that forms the floor portion of the upper boarding / exiting section is installed.

[0013] FIG. 2 is a front view showing the step 9 in the vicinity of the lower boarding / alighting portion of FIG. 1, FIG. 3 is a cross-sectional view taken along line III-III of FIG. 2, and FIG. Indicates the state. Each step 9 has a step body 21, a pair of drive rollers 22a and 22b, and a pair of follower rollers 23a and 23b. The step body 21 includes a step bracket 24, a step plate 25 fixed to the top of the step bracket 24, a riser 26 fixed to one end of the step bracket 24 in the front-rear direction, and a step bracket parallel to the width direction of the step 9. It has a step shaft 27 attached to 24.

[0014] On the upper surface of the tread 25, a plurality of tread cleats 25a parallel to the moving direction of the step 9 are provided. The step chain 8 is connected to the step shaft 27. A pair of drive roller mounting portions 27a and 27b are provided at both ends of the step shaft 27. Drive roller 22a, 22 b is rotatably attached to the drive roller attaching portions 27a and 27b. Each step chain 8 is connected to the step shaft 27 by drive roller mounting portions 27a and 27b.

[0015] The step bracket 24 is provided with a pair of follower roller mounting portions 24a, 24b. The follower rollers 23a and 23b are rotatably attached to the follower roller attaching portions 24a and 24b.

[0016] A pair of drive rails 28a, 28b for guiding the movement of the drive rollers 22a, 22b and a pair of follower rails 29a, 29b for guiding the movement of the follower rollers 23a, 23b are attached to the main frame 1. It has been.

A comb plate 30 is provided adjacent to the lower floor plate 13 on the floor of the lower boarding / exiting portion. A plurality of combs 31 having a plurality of comb teeth that mesh with the tread board cleat 25a are attached to the comb plate 30.

[0018] The pair of inclination suppressing members (receivers) 32 are attached to the drive rails 28a and 28b in the vicinity of the lower getting-on / off portion. Each inclination suppressing member 32 is attached to the drive rails 28a and 28b via a plurality of mounting brackets 33 and a plurality of bolts 34. Each inclination restraining member 32 has an L-shaped cross section, and has a horizontal fixing portion facing the lower surface of the drive rails 28a and 28b and a vertical receiving portion facing the lower portion of the drive roller mounting portions 27a and 27b. ing.

The mounting bracket 33 is interposed between the lower surfaces of the drive rails 28a and 28b and the fixed portion of the inclination suppressing member 32. The mounting bracket 33 is fixed to the lower surfaces of the drive rails 28a and 28b by welding or bolts. Further, each mounting bracket 33 is provided with a screw hole into which the bolt 34 is screwed. Each fixing portion of the inclination suppressing member 32 is provided with a plurality of through holes through which the bolts 34 pass.

[0020] The inclination suppressing member 32 is connected to the drive roller mounting portion 27a, via the step chain 8 when the drive roller mounting portions 27a, 27b are displaced downward due to damage to the drive rollers 22a, 22b or abnormalities such as wheel removal. 27b is received and the inclination of the step main body 21 is suppressed. That is, when the drive roller mounting portions 27a and 27b are displaced downward, the lower part of the step chain 8 located at the drive roller mounting portions 27a and 27b comes into contact with the receiving portion of the inclination suppressing member 32, and the drive roller mounting portions 27a and 27b The downward displacement is restricted.

[0021] The distance C between the lower part of the normal step chain 8 and the upper end of the receiving part of the inclination restraining member 32 (For example, about 2 to 3 mm) is set to be smaller than a normal mating depth dimension d (for example, about 5 mm) of the treadle cleat 25a of the comb 31.

[0022] Further, at the upstream end portion (right end portion in Fig. 3) of the inclination suppressing member 32 in the step movement direction, the distance between the drive roller mounting portions 27a and 27b is gradually narrowed along the step movement direction. An upstream inclined surface 32a is provided. Further, at the end of the inclination restraining member 32 on the downstream side in the step movement direction (the left end portion in FIG. 3), the interval between the drive roller mounting portions 27a and 27b gradually increases along the step movement direction. Is provided with a downstream inclined surface 32b.

[0023] Furthermore, the upper surface of the inclination suppressing member 32 is a smooth surface, and the slip resistance is reduced by applying grease or applying a surface treatment.

Next, the operation will be described. Here, the escalator of Embodiment 1 is used for the Down operation. Under normal conditions, the drive roller mounting portions 27a and 27b are moved on the inclination suppressing member 32 while maintaining the distance C between the driving roller attaching portions 27a and 27b.

[0025] On the other hand, when at least one of the drive rollers 22a and 22b is derailed, the step 9 is inclined in a direction in which the rear end portion (the end portion on the opposite riser side) becomes lower, and the front end of the step 9 is set. The part (riser side end) is lifted from the normal position. For this reason, if the step 9 moves to the position of the comb 31 as it is, the step board 25 may interfere with the comb 31 and the comb 31 may be damaged.

However, in Embodiment 1, since the inclination suppressing member 32 is provided upstream of the comb 31, when the step 9 moves as it is, the drive roller mounting portion on the side where the drive rollers 22a and 22b are removed 27a and 27b ride on the inclination suppressing member 32 as shown in FIG. Thereby, the inclination angle of the step 9 is reduced, and the front end portion of the step board 25 is pulled down.

Accordingly, even if the step 9 moves to the position of the comb 31, it is possible to prevent the comb 31 from colliding with the comb 31 from being damaged. The same effect can also be obtained when the outer peripheral components (rubber or the like) of the drive rollers 22a and 22b are peeled off.

[0028] Further, between the lower part of the normal step chain 8 and the upper surface of the inclination restraining member 32, there is a gap C smaller than the mating depth dimension d of the normal comb 31 with the step plate cleat 25a. As a result, the drive roller mounting portions 27a and 27b do not interfere with the tilt restraining member 32 during normal operation, and when the drive rollers 22a and 22b are abnormal, interference between the comb 31 and the tread 25 is more reliably eliminated. be able to. [0029] Furthermore, since an upstream inclined surface 32a is provided at the upstream end of the inclination suppressing member 32 in the step movement direction, the impact when the drive roller mounting portions 27a and 27b ride on the inclination suppressing member 32 is affected. Can be relaxed.

[0030] Furthermore, since the inclination suppressing member 32 is attached to the drive rails 28a and 28b, the inclination suppressing member 32 can be configured in a small size, and the alignment of the inclination suppressing member 32 with respect to the drive rails 28a and 28b is easy. It is.

[0031] Embodiment 2.

Next, FIG. 4 is a cross-sectional view showing the main part of the escalator according to Embodiment 2 of the present invention, and the escalator of Embodiment 2 is used for Up operation. Therefore, the inclination suppressing member 32 is attached to the drive rails 28a and 28b in the vicinity of the upper boarding / alighting portion. Other configurations are the same as those in the first embodiment.

Next, the operation will be described. When at least one of the drive rollers 22a, 22b is removed, the step 9 is inclined in a direction in which the front end (the end on the opposite side of the riser) is lowered. For this reason, if the step 9 moves to the position of the comb 31 as it is, a foreign object is caught in the gap generated between the front end of the step plate 25 and the comb 31, or the step plate 25 interferes with the comb 31 and the comb 31 is damaged. There is a possibility that

[0033] However, in Embodiment 2, since the inclination suppressing member 32 is provided upstream of the comb 31, when the step 9 moves as it is, the drive roller mounting portions 27a and 27b ride on the inclination suppressing member 32. Thereby, the inclination angle of the step 9 is reduced, and the front end portion of the step board 25 is lifted. Therefore, even if the step 9 moves to the position of the comb 31, there will be no gap between the comb 31 and the step board 25 .A foreign object may be caught between the comb 31 and the step board 25, or the comb 31 may be damaged. Can be prevented.

[0034] In the first embodiment, the escalator for Down operation and in the second embodiment has been described for the Up operation. However, when the operation direction is switched, the escalator is inclined to both the upper and lower getting on / off portions. The suppressing member 32 may be installed.

In the first and second embodiments, the step chain 8 is received by the inclination suppressing member 32, but the drive roller mounting portions 27a and 27b may be directly received while avoiding the step chain 8.

[0035] Embodiment 3. Next, FIG. 5 is a front view showing steps near the boarding / exiting portion of the escalator according to Embodiment 3 of the present invention. A pair of step links 15 are connected between adjacent steps 9. The step link 15 is connected to the step shaft 27 on both sides in the width direction of the step body 21. That is, the step link 15 is connected to the drive roller mounting portions 27a and 27b. Rack-shaped teeth are provided on the lower surface of each step link 15. A driving machine (not shown) that drives the step 9 via a step link 15 is disposed at an intermediate inclined portion of the main frame 1. That is, the escalator of Embodiment 3 is an intermediate drive escalator.

[0036] The receiving portion of the inclination suppressing member 32 faces the lower portions of the drive roller mounting portions 27a and 27b outside the step link 15. That is, the inclination suppressing member 32 is opposed to the lower portions of the drive roller mounting portions 27a and 27b while avoiding the step link 15. When the drive roller mounting portions 27a, 27b are displaced downward due to damage to the drive rollers 22a, 22b or abnormalities such as wheel removal, the lower portions of the drive roller mounting portions 27a, 27b come into contact with the receiving portions of the inclination suppressing member 32, and the drive roller The downward displacement of the mounting portions 27a and 27b is restricted.

[0037] The distance C (for example, about 2 to 3 mm) between the lower portions of the drive roller mounting portions 27a and 27b at the normal time and the upper end of the receiving portion of the inclination suppressing member 32 is the same as the tread cleat 25a of the comb 31 at the normal time. In this case, it is set smaller than the depth dimension (for example, about 5 mm).

[0038] As described above, even when the inclination suppressing member 32 is used in the intermediate drive type escalator, the same effect as in the first and second embodiments can be obtained.

Further, since the inclination restraining member 32 faces the lower part of the drive roller mounting portions 27a and 27b while avoiding the step link 15, the drive roller mounting portions 27a and 27b are displaced downward due to the abnormality of the drive rollers 22a and 22b. Even so, the teeth of the step link 15 where the lower surface of the step link 15 does not come into contact with the inclination suppressing member 32 will not be damaged.

[0039] Embodiment 4.

Next, FIG. 6 is a cross-sectional view showing a main part of an escalator according to Embodiment 4 of the present invention. In the figure, a pair of detection switches 41 are attached to the upstream side in the step movement direction from the inclination suppressing member 32 of the drive rails 28a, 28b. Each detection switch 41 is attached to the drive rails 28a and 28b so as to face the lower portions of the drive roller mounting portions 27a and 27b. Each detection switch 41 is operated by the drive roller mounting portions 27a and 27b when the drive roller mounting portions 27a and 27b are displaced downward due to an abnormality in the drive rollers 22a and 22b.

[0041] The distance C between the lower portions of the drive roller mounting portions 27a and 27b in the normal state and the upper end of the operation portion of the detection switch 41 is larger than the mating depth dimension of the treadle cleat 25a of the comb 31 in the normal state. It is set small. The detection switch 41 is connected to the control device 12 (FIG. 1), and when the detection switch 41 is operated by the drive roller mounting portions 27a and 27b, the travel of the step 9 is stopped. Other configurations are the same as those in the first embodiment.

In such an escalator, since the detection switch 41 is provided upstream of the inclination suppressing member 32, the abnormality of the drive rollers 22a and 22b can be detected more reliably. Further, when the detection switch 41 is operated, the travel of the step 9 is stopped, so that it is more reliably prevented that the operation is continued while the posture of the step 9 is tilted. Furthermore, even if the step 9 moves to a certain extent after the detection switch 41 is operated until the step 9 is actually stopped, the inclination suppressing member 32 is provided, so the comb 31 and the step plate 25 It is possible to prevent foreign matter from being sandwiched between them and the comb 31 from being damaged.

[0043] It is preferable that the detection switch 41 is disposed as close to the inclination suppressing member 32 as possible. Specifically, the detection switch 41 is preferably disposed in the horizontal movement portion of the step 9, and is particularly preferably disposed within the range of the longitudinal dimension of the step 9 from the inclination suppressing member 32.

[0044] Embodiment 5.

Next, FIG. 7 is a side view showing the inclination suppressing member 32 of the escalator according to Embodiment 5 of the present invention, FIG. 8 is a front view showing the inclination suppressing member 32 of FIG. 7, and FIG. 9 shows the step shaft 27 of FIG. FIG. 10 is a side view showing the state of riding on the inclination suppressing member 32, and FIG. 10 is a front view showing the inclination suppressing member 32 of FIG. In the figure, a pair of mounting brackets 42a and 42b are attached to each drive rail 28a and 28b. A rod 35 is fixed between the mounting brackets 42a and 42b in parallel with the moving direction of the step 9.

A cam member 36 is attached to the rod 35. That is, the rod 35 passes through the cam member 36. The cam member 36 is fixed to the lower surface of the inclination suppressing member 32. As a result, the inclination suppressing member 32 and the cam member 36 are parallel to the moving direction of the step 9 along the rod 35. It is possible to slide within a predetermined range.

[0046] Springs 37a, 37b for restoring the cam member 36 to the neutral position are provided between the cam member 36 and the mounting brackets 42a, 42b. A curved recess 36 a is provided on the lower surface of the cam member 36. A detection switch 37 is attached to each of the drive rails 28a and 28b so that the operation portion is inserted into the recess 36a.

[0047] When the drive roller mounting portions 27a and 27b ride on the tilt suppression member 32 due to an abnormality in the drive rollers 22a and 22b, the tilt suppression member 32 and the cam member 36 are displaced by the force received from the drive roller mounting portions 27a and 27b. Then, the operation portion of the detection switch 37 is relatively moved out of the recess 36a, and the detection switch 37 is operated. Thereby, the detection switch 37 detects the displacement of the inclination suppressing member 32 due to the contact of the drive roller mounting portions 27a and 27b.

The detection switch 37 is connected to the control device 12 (FIG. 1), and when the displacement of the tilt suppressing member 32 is detected by the detection switch 37, the travel of the step 9 is stopped. Other configurations are the same as those in the first or second embodiment.

[0049] In such an escalator, since the detection switch 37 for detecting the displacement of the inclination suppressing member 32 is used, the abnormality of the drive rollers 22a and 22b can be detected more reliably. Further, when the detection switch 37 is operated, the travel of the step 9 is stopped, so that it is more reliably prevented that the operation is continued while the posture of the step 9 is tilted. Further, since the inclination suppressing member 32 is slidable in the moving direction of the step 9, it is possible to mitigate the impact when the drive roller mounting portions 27a and 27b ride on the inclination suppressing member 32.

[0050] Embodiment 6.

Next, FIG. 11 is a side view showing an inclination suppressing member 32 of an escalator according to Embodiment 6 of the present invention, and FIG. 12 is a front view showing the inclination suppressing member 32 of FIG. A bracket 43 is fixed to the lower surface of each drive rail 28a, 28b. On the bracket 43, the inclination suppressing member 32 is supported via a pair of support springs 44a and 44b. The inclination suppressing member 32 can be displaced in the vertical direction by expansion and contraction of the support springs 44a and 44b.

[0051] A pair of cylindrical displacement regulating members 45a and 45b surrounding the support springs 44a and 44b are fixed to the bracket 43. The downward displacement of the inclination suppressing member 32 is restricted by the displacement restricting members 45a and 45b. In addition, the bracket 43 has a downward inclination of the inclination suppressing member 32. A detection switch 37 is attached to detect the displacement.

[0052] When the driving roller mounting portions 27a and 27b ride on the inclination suppressing member 32 due to an abnormality in the driving rollers 22a and 22b, the inclination suppressing member 32 is depressed until it contacts the displacement restricting members 45a and 45b. Thereby, the detection switch 37 is operated, and the displacement of the inclination suppressing member 32 is detected.

In such an escalator, since the detection switch 37 that detects the displacement of the inclination suppressing member 32 is used, it is possible to detect the abnormality of the drive rollers 22a and 22b more reliably. Further, when the detection switch 37 is operated, the travel of the step 9 is stopped, so that it is more reliably prevented that the operation is continued while the posture of the step 9 is tilted.

It should be noted that the inclination suppressing member 32 makes the driving roller attaching portions 27a and 27b more stable when the driving roller attaching portions 27a and 27b, which may be attached to the main frame 1, for example, ride on the inclination suppressing member 32. Can be supported.

In the above example, only the escalator has been described, but the present invention can also be applied to a moving sidewalk.

Claims

The scope of the claims

[1] Main frame,

A step body including a tread plate having a plurality of tread cleats, a pair of driving roller mounting portions and a pair of following roller mounting portions, a pair of rotatable driving rollers provided on the driving roller mounting portion, and the following tracking A plurality of steps that are endlessly connected and circulated in the main frame;

A drive rail provided on the main frame for guiding the movement of the drive roller, a follower rail provided on the main frame for guiding the movement of the follower roller, a comb provided on the landing section, and mating with the tread cleat ,as well as

It is provided in the main frame so as to face the lower part of the driving roller mounting portion in the vicinity of the getting on / off portion, and when the driving roller mounting portion is displaced downward due to an abnormality of the driving roller, the driving roller mounting portion is Inclination suppression member that suppresses the inclination of the step body

Equipped with passenger conveyor.

[2] An endless step chain connecting the above steps is further provided,

The passenger conveyor according to claim 1, wherein the step chain is connected to the step at the drive roller mounting portion, and the inclination suppressing member is disposed so as to face a lower portion of the step chain.

[3] The apparatus further comprises a plurality of step links connecting the steps.

The passenger conveyor according to claim 1, wherein the inclination suppressing member is disposed so as to face the lower portion of the drive roller mounting portion while avoiding the step link.

[4] An inclined surface is provided at the upstream end of the inclination suppressing member in the step movement direction so that the distance from the drive roller mounting portion gradually decreases along the step movement direction. The passenger conveyor according to claim 1.

[5] Provided in the main frame so as to face the lower portion of the drive roller mounting portion on the upstream side in the step movement direction of the inclination suppressing member, and the drive roller mounting portion is moved downward due to an abnormality of the drive roller. The passenger conveyor according to claim 1, further comprising a detection switch that is operated by the drive roller mounting portion when displaced.

6. The passenger conveyor according to claim 5, further comprising a control device that stops the travel of the step when the detection switch is operated by the drive roller mounting portion.

[7] The tilt suppressing member can be displaced by contact with the drive roller mounting portion. In the vicinity of the tilt control member, the tilt suppressing member is displaced by the contact with the drive roller mounting portion. The passenger compare according to claim 1, further comprising a detection switch for detection.

8. The passenger conveyor according to claim 7, further comprising a control device that stops the running of the step when the displacement of the inclination suppressing member is detected by the detection switch.