JP7222125B1 - Step and Passenger Conveyor - Google Patents

Abstract

A step and a passenger conveyor are provided that can prevent lubricating oil from adhering to other steps positioned below. A step according to an embodiment comprises an axle, two wheels, two collars, a support frame and a storage device. Two wheels are provided at both ends of the shaft. Two collars are located between the two wheels and cover the axle at positions spaced from each other in the direction of extension of the axle. The support frame has two side frames and supports the treads. Two side frames are each attached to the shaft via a corresponding one of the two collars. The storage device has a cylindrical member and an oil absorber, and is provided with a gap. The cylindrical member has an inner shaft penetrating therethrough and covers the ends of the two collars positioned between the two side frames. The oil absorbing material is arranged inside the tubular member and is capable of absorbing oil. The gap communicates with the interior of the tubular member between the end of the tubular member and the collar. [Selection drawing] Fig. 3

Description

Embodiments of the present invention relate to steps and passenger conveyors.

Conventionally, there is known a passenger conveyor provided with a plurality of steps that are connected to an endless chain and that circulate when the chain is driven. The step includes, for example, a footboard on which passengers ride, a shaft connected to a chain, wheels attached to the shaft and supported by guide rails, and supports attached to the shaft via a collar and supporting the footboard. a frame;

A plurality of steps are connected to each other via a chain and cyclically moved. The step on the forward pass is located above the step on the return pass. The steps in the forward path and the steps in the return path are vertically reversed.

Passenger conveyors supply, for example, chains with lubricating oil. Lubricating oil is supplied to the wheels along the chain. Lubricating oil, for example, reduces mechanical friction between the wheels and the guide rails and makes the cyclic movement of the steps more efficient.

JP-A-10-045371 JP 2016-038050 A

In conventional passenger conveyors, the lubricating oil supplied to the chain also adheres to the collar between the shaft and the support frame. Lubricating oil spreads toward the center of the shaft along the shaft and collar due to, for example, surface tension.

Lubricating oil spreading along the shaft and collar drips from the end of the collar when it reaches the end of the collar. The lubricating oil dripping from the step on the outward trip may adhere to the step on the return trip and stain the step.

One example of the problem solved by the present invention is to provide a step and passenger conveyor that can prevent lubricating oil from adhering to other steps located below.

An embodiment step comprises an axle, two wheels, two collars, a support frame and a storage device. Two wheels are provided at both ends of the shaft. Two collars are located between the two wheels and cover the axle at positions spaced from each other in the direction of extension of the axle. The support frame has two side frames and supports the treads. Two side frames are each attached to the shaft via a corresponding one of the two collars. The storage device has a cylindrical member and an oil absorber, and is provided with a gap. The cylindrical member has an inner shaft penetrating therethrough and covers the ends of the two collars positioned between the two side frames. The oil absorbing material is arranged inside the tubular member and is capable of absorbing oil. The gap communicates with the interior of the tubular member between the end of the tubular member and the collar.

FIG. 1 is a side view of the passenger conveyor of this embodiment. FIG. 2 is a perspective view of the step of this embodiment. FIG. 3 is a rear view of the step of this embodiment. FIG. 4 is a perspective view of the storage device of this embodiment. FIG. 5 is a cross-sectional view of part of the storage device of this embodiment. FIG. 6 is a rear view of the steps of the modification.

(embodiment)
The passenger conveyor 1 and steps 2 according to the embodiment will be described below with reference to the drawings. The configurations of the embodiments described below and the actions and results (effects) brought about by the configurations are merely examples, and are not limited to the following descriptions. In this specification, ordinal numbers are used only to distinguish parts and members, and do not indicate order or priority.

A passenger conveyor 1 is equipment installed in a building to convey passengers between two locations in the building. In this embodiment, the passenger conveyor 1 is an escalator that is installed with an inclination across an upper floor and a lower floor in a building. However, the passenger conveyor 1 is not limited to this, and may be, for example, a moving walkway installed flat on the same floor of a building.

FIG. 1 is a side view of a passenger conveyor 1 according to this embodiment. As shown in FIG. 1, the passenger conveyor 1 comprises a plurality of steps 2, a truss 3, two guide rails 4, a driving device 5 and two step chains 6. FIG. 1 shows one of the two guide rails 4 and one of the two step chains 6 for convenience. The step 2 is an example of a step, and the step chain 6 is an example of a chain.

FIG. 2 is a perspective view of the step 2 of this embodiment. FIG. 3 is a rear view of the step 2 of this embodiment. The plurality of steps 2 transport passengers, luggage, and the like using the passenger conveyor 1 by moving along the guide rails 4 while loading the passengers and luggage.

As shown in FIG. 3, each step 2 includes a step axle 21, two front wheels 22, two rear wheels 23, two step collars 24, a support frame 25, cleats 26, risers 27, and a storage device 28 . The step shaft 21 is an example of a shaft, and the front wheel 22 is an example of a wheel. The tread collar 24 is an example of a collar and the cleat 26 is an example of a tread.

In the figures below, three mutually orthogonal directions are defined for convenience. The X direction is the direction along the short side of the cleat 26 of the step 2 and may also be referred to as the front-rear direction. The Y direction is the direction along the length of the cleat 26 of the step 2 and may also be referred to as the lateral direction. The Z direction is the direction along the thickness direction of the cleat 26 of the step 2 and may also be referred to as the vertical direction. Note that expressions indicating directions such as front, back, left, right, up and down in the present embodiment are names for convenience, and do not limit the position, posture, and mode of use of the step 2. FIG.

The step shaft 21 is, for example, a cylindrical shaft made of metal or the like. The step shaft 21 extends in the Y direction. The two step chains 6 are connected to both ends 21a of the step shaft 21 of each step 2 in the longitudinal direction (Y direction) or near the ends 21a.

Two front wheels 22 are provided at both ends 21 a of each step shaft 21 . For example, the front wheels 22 are attached to the step shafts 21 so as to be rotatable around the step shafts 21, respectively. In this embodiment, the two front wheels 22 are positioned inside the step chain 6 . However, the present invention is not limited to this, and the two front wheels 22 may be positioned outside the step chain 6 .

The two rear wheels 23 are attached to two supports 251 provided on the support frame 25 so as to be rotatable about the supports 251 as the center of rotation. The rear wheels 23 are arranged inside the steps 2 relative to the two front wheels 22 and the step chains 6 .

FIG. 4 is a perspective view of the storage device 28 of this embodiment. FIG. 5 is a cross-sectional view of part of the storage device 28 of this embodiment. As shown in FIG. 5, the two step collars 24 are cylindrical members made of metal, resin, or the like. The inner diameter of each step collar 24 is larger than the outer diameter of the step shaft 21 . A step shaft 21 passes through the inside of each cylindrical step collar 24 . Therefore, each step collar 24 covers the step shaft 21 .

Each step collar 24 is located between two front wheels 22 . Each step collar 24 is also positioned between two step chains 6 . The two step collars 24 are located near both ends 21a of the step shaft 21 and are separated from each other in the direction in which the step shaft 21 extends (the Y direction).

As shown in FIG. 3, the support frame 25 has two side frames 252. As shown in FIG. The two side frames 252 are made of metal or the like and extend so as to connect the cleats 26 and risers 27 . Thereby, the support frame 25 can support the cleat 26 .

The step shaft 21 penetrates the side frame 252 and extends in the left-right direction (Y direction). Each side frame 252 is attached to the step shaft 21 via a corresponding one of the two step collars 24 . Therefore, the front wheels 22 are supported by the side frames 252 via the step shafts 21 and the step collars 24 . Also, the support 251 is attached to the side frame 252 at a position spaced apart from the step shaft 21 . Therefore, the rear wheels 23 are supported by the side frames 252 via the struts 251. As shown in FIG.

Since the two side frames 252 are attached to the two step collars 24, they are separated from each other in the direction in which the step shaft 21 extends (the Y direction). Also, the two side frames 252 are positioned between the two front wheels 22 .

One end 24 a of each step collar 24 is located between two side frames 252 . The end 24a is the inner end of the step 2 among the two ends of the step collar 24. As shown in FIG. The end 24a of one step collar 24 and the end 24a of the other step collar 24 are spaced apart from each other and face each other.

The cleat 26 is formed in a substantially flat plate-like shape on which passengers, luggage, and the like are placed. The riser 27 is a curved plate protruding from the rear (−X direction) end of the cleat 26 and connected to the support frame 25 . The riser 27 extends to cover between the cleats 26 of the two steps 2 forming a step.

As shown in FIG. 5, the storage device 28 has a tubular member 281, an oil absorbing sheet 282, and two support portions 283. As shown in FIG. Furthermore, the storage device 28 is provided with an inlet 284 . The oil absorbing sheet 282 is an example of an oil absorbing material, and the inlet 284 is an example of a gap.

The tubular member 281 is a tubular member made of metal, resin, or the like. For example, the tubular member 281 is made of resin, so that it has excellent flame retardancy, excellent workability, and is lightweight. The tubular member 281 extends in the longitudinal direction (Y direction) of the step shaft 21, and both ends 281a in the longitudinal direction are open.

The step shaft 21 passes through the inside of the tubular member 281 . The tubular member 281 and the step shaft 21 are coaxially arranged. Note that the center of the tubular member 281 and the center of the step shaft 21 may be misaligned.

The cylindrical member 281 can be split into two pieces, for example, in the radial direction. The divided cylindrical members 281 are attached to the step shaft 21 by sandwiching the step shaft 21 and being fixed to each other. That is, the tubular member 281 is attachable to and detachable from the step shaft 21 .

In this embodiment, the divided cylindrical members 281 are fixed to each other with bolts. However, the present invention is not limited to this, and the divided cylindrical members 281 may be fixed to each other by, for example, snap-fitting or fasteners.

The cylindrical member 281 covers the end 24a of the step collar 24 located between the two side frames 252 and the step shaft 21. As shown in FIG. The step collar 24 passes through the end portion 281a of the tubular member 281 and extends over the inside and outside of the tubular member 281. As shown in FIG. The length of the cylindrical member 281 in the axial direction may be changed as appropriate as long as it covers the end 24a of the step collar 24 located between the two side frames 252 .

As shown in FIG. 3, tubular member 281 has four small windows 285 . Window 285 is an example of a transparent portion. Each small window 285 is made of a transparent material that allows the inside of storage device 28 to be viewed from the outside of storage device 28 . For example, each small window 285 is formed by closing an opening that communicates the inside and outside of the cylindrical member 281 with a transparent material.

In this embodiment, two small windows 285 are provided in each of the divided tubular members 281 . Note that the number and shape of the small windows 285 may be appropriately changed as long as the inside of the storage device 28 is visible.

Furthermore, the cylindrical member 281 is provided with an oil drain hole 286 . Note that the oil drain hole 286 is an example of a hole. The oil drain hole 286 is a hole that communicates the inside and the outside of the tubular member 281 . The oil drain hole 286 is closed by a rubber plug 286a except when the passenger conveyor 1 is inspected.

In this embodiment, an oil drain hole 286 is provided near the center of the tubular member 281 . The position of the oil drain hole 286 may be anywhere on the surface of the cylindrical member 281 as long as it does not interfere with the small windows 285 .

The oil-absorbing sheet 282 shown in FIG. 5 is, for example, a nonwoven or woven sheet made of synthetic resin capable of absorbing oil such as polyolefin, polyester, nylon, or polyurethane. Note that the oil absorbing sheet 282 may be made of another material such as cotton. Also, instead of the oil absorbing sheet 282, for example, a sponge or the like capable of absorbing oil may be provided.

The oil absorbing sheet 282 is arranged inside the tubular member 281 . For example, the oil absorbing sheet 282 surrounds the step shaft 21 and the step collar 24 inside the cylindrical member 281 . In other words, the oil absorbing sheet 282 is positioned between the tubular member 281 and the step shaft 21 .

The oil absorbing sheet 282 is fixed to the inner peripheral surface 281b of the tubular member 281 with an adhesive, a clip, or the like. Note that the oil absorbing sheet 282 may be fixed to the step shaft 21 or the step collar 24 . The oil absorbing sheet 282 may be in contact with the step collar 24 or may be separated from the step collar 24 .

The two support portions 283 protrude from the inner peripheral surface 281b of the tubular member 281 toward the step shaft 21 at positions spaced apart from both end portions 281a of the tubular member 281. As shown in FIG. The support portion 283 contacts the step shaft 21 and is supported by the step shaft 21 . Note that the support portion 283 may contact the step collar 24 and be supported by the step collar 24 . The tubular member 281 is supported by the step shaft 21 via a support portion 283 so as to be rotatable around the step shaft 21 .

The inlet 284 is a gap provided between the outer peripheral surface of the step collar 24 penetrating through the end portion 281a of the tubular member 281 and the inner peripheral surface of the end portion 281a of the tubular member 281 . The inner diameter of the end portion 281a of the tubular member 281 is longer than the outer diameter of the step collar . The inflow port 284 opens in the left-right direction at both end portions 281a of the cylindrical member 281. As shown in FIG. The inflow port 284 communicates with the inside of the cylindrical member 281 in which the oil absorbing sheet 282 is arranged.

The length of each support portion 283 is set so that a gap (inlet 284) is formed between the step collar 24 and the end portion 281a of the tubular member 281 when the storage device 28 is attached to the step shaft 21. be. The width of the inlet 284 is substantially constant around the step axis 21 .

A tapered portion 287 is provided inside the tubular member 281 . The tapered portion 287 is part of the space inside the tubular member 281 that tapers toward the inlet 284 . In other words, in the tapered portion 287, the diameter of the inner peripheral surface 281b of the cylindrical member 281 becomes shorter as the inlet 284 is closer.

As shown in FIG. 1, the truss 3 is an outer frame or frame that defines the range of motion and the angle of inclination of the passenger conveyor 1. As shown in FIG. Inside the truss 3, steps 2, guide rails 4 and step chains 6 are arranged.

Two guide rails 4 extend from the lower floor to the upper floor. Each guide rail 4 has a front wheel guide rail 41 and a rear wheel guide rail 42 . As shown in FIG. 2, each front wheel guide rail 41 supports the front wheel 22 by contacting the front wheel 22 of each step 2. As shown in FIG. Each rear wheel guide rail 42 supports the rear wheel 23 by contacting the rear wheel 23 of each step 2 .

The plurality of steps 2 move along the guide rails 4 with the front wheels 22 guided along the front wheel guide rails 41 and the rear wheels 23 guided along the rear wheel guide rails 42 . Each rear wheel guide rail 42 is located below each front wheel guide rail 41 (−Z direction) in the vertical direction (Z direction).

As shown in FIG. 1, the drive device 5 includes drive wheels 51, driven wheels 52, a drive chain 53, a drive machine 54, an automatic oil supply device 55, and an oil absorption pipe 56.

The drive wheel 51 is provided at the end of the passenger conveyor 1 on the upper floor side. On the other hand, the driven wheel 52 is provided at the end of the passenger conveyor 1 on the lower floor side. The positions at which the driving wheels 51 and the driven wheels 52 are provided may be reversed. A step chain 6 is wound around the drive wheel 51 .

The drive chain 53 is formed in an endless shape and spans the drive wheel 51 and the drive machine 54 . In other words, the drive chain 53 endlessly connects the drive wheel 51 and the drive machine 54 . The driving machine 54 is, for example, a device that acts as a power source such as a motor. The drive machine 54 drives the drive wheels 51 via the drive chain 53 .

The automatic oil supply device 55 is a device capable of automatically supplying oil such as lubricating oil. In this embodiment, the automatic fueling device 55 is installed on the upper floor, but it may be installed on the lower floor. The oil absorption pipe 56 extends from the automatic oil supply device 55 toward the step chain 6 wound around the driving wheel 51 . The automatic oil supply device 55 supplies lubricating oil to the step chain 6 through the oil absorption pipe 56 .

The step chain 6 is formed in an endless shape and spans between the drive wheel 51 and the driven wheel 52 . The step chain 6 is connected to the step shafts 21 of the plurality of steps 2 as described above. Therefore, the step chain 6 connects the plurality of steps 2 in an endless manner.

In the passenger conveyor 1 of the present embodiment, the drive wheels 51 are driven via the drive chains 53 when the drive machine 54 of the drive device 5 is activated. The step chain 6 circulates between the driving wheel 51 and the driven wheel 52 by power supplied from the driving machine 54 to the driving wheel 51 via the driving chain 53 . At this time, the two front wheels 22 of the plurality of steps 2 to which the step chains 6 are fixed move along the two front wheel guide rails 41 .

As each front wheel 22 of each step 2 moves along the front wheel guide rail 41, each rear wheel 23 also moves along each rear wheel guide rail 42. - 特許庁That is, as the step chain 6 circulates, the plurality of steps 2 circulate between the drive wheels 51 and the driven wheels 52 .

When a plurality of steps 2 move upward, each step 2 is ejected from the truss 3 with the steps 2 adjacent to each other on the lower floor being horizontal. Each step 2 curves while transitioning at the bottom. Before long, the step between the adjacent steps 2 expands and transitions stepwise.

A plurality of steps 2 ascending in a step-like manner curve while transitioning in the upper part. Before long, the level difference between the adjacent steps 2 is reduced and transitioned to a horizontal state. Each step 2 enters the truss 3 in a horizontal state on the upper floor.

Each step 2 is inverted downward after entering the truss 3 . Each step 2 is lowered and reversed again, and advanced from the truss 3 on the lower floor. That is, the up-and-down direction of each step 2 is reversed between the outward trip and the return trip.

In order to improve the running efficiency of the passenger conveyor 1 and suppress the wear of the front wheels 22, the automatic lubricating device 55 supplies lubricating oil to the step chain 6 through the oil absorbing pipe 56. Lubricating oil supplied to the step chain 6 may adhere to the step shaft 21 and the step collars 24 from the step chain 6 via the front wheels 22 .

The lubricating oil spreads (propagates) toward the center of the step shaft 21 along the step collar 24 . Lubricating oil flows into the cylindrical member 281 through the inlet 284 . When the lubricating oil reaches the end 24a of the step collar 24 inside the cylindrical member 281, it drips from the end 24a. The lubricating oil may drip from the step collar 24 at a position spaced apart from the end 24a.

The end 24a of the step collar 24 is surrounded by a cylindrical member 281. As shown in FIG. Therefore, the lubricating oil dripping from the step collar 24 is received by the tubular member 281 or the oil absorbing sheet 282 arranged inside the tubular member 281 . Lubricating oil accumulates inside the cylindrical member 281 and is absorbed by the oil absorbing sheet 282 .

The tubular member 281 also covers the central portion of the step shaft 21 that is not covered by the step collar 24 . Therefore, the lubricating oil that spreads along the step shaft 21 and drips from the central portion of the step shaft 21 is also received by the oil absorbing sheet 282 .

As described above, the storage device 28 can store the lubricating oil propagating through the step shaft 21 and the step collar 24 . Therefore, the steps 2 and the passenger conveyor 1 can prevent the lubricating oil from adhering to other steps 2 positioned below. Therefore, the passenger conveyor 1 can prevent the steps 2 from being soiled by the lubricating oil, impairing the appearance of the steps 2, and preventing the lubricating oil from adhering to passengers, luggage, etc. on the steps 2.

The lubricating oil dripping from the step collar 24 is guided to the oil absorbing sheet 282 fixed to the inner peripheral surface 281b of the cylindrical member 281 at the tapered portion 287. As shown in FIG. Furthermore, the tapered portion 287 can prevent the lubricating oil that has flowed into the cylindrical member 281 from the inlet 284 from leaking to the outside of the storage device 28 .

The color of the lubricating oil is different from the original color of the oil absorbing sheet 282 . Therefore, the worker can visually recognize how much lubricating oil is absorbed by the oil absorbing sheet 282 through each small window 285 of the tubular member 281 .

When disposing of the lubricating oil stored in the storage device 28, the operator checks the inside of the storage device 28 through each small window 285 of the storage device 28. FIG. If there is lubricating oil that has not been absorbed by the oil absorbing sheet 282, the operator removes the rubber plug 286a blocking the oil drain hole 286 and collects the lubricating oil from the oil drain hole 286. By rotating the cylindrical member 281 around the step shaft 21, the oil drain hole 286 can be easily directed downward.

Next, the operator removes the bolts fixing the cylindrical member 281 and removes the storage device 28 from the step shaft 21 . At this time, the oil absorbing sheet 282 fixed to the inner peripheral surface 281b of the tubular member 281 may be removed from the tubular member 281 concerned.

The oil absorbing sheet 282 removed from the tubular member 281 is replaced with a new one and fixed to the inner peripheral surface 281b of the tubular member 281. As shown in FIG. The cylindrical member 281 is reattached to the step shaft 21 by sandwiching the step shaft 21 and fixing each other with bolts. Incidentally, the operator may replace the storage device 28 with a new one.

As described above, the step 2 includes the step shaft 21, the two front wheels 22, the two step collars 24, the support frame 25, and the storage device . The front wheels 22 are provided at both ends 21a of the step shaft 21. As shown in FIG. The step collar 24 is positioned between the two front wheels 22 and covers the step shaft 21 at positions separated from each other in the direction in which the step shaft 21 extends. The support frame 25 has two side frames 252 each attached to the step shaft 21 via a corresponding one of the two step collars 24 and supports the cleat 26 . The storage device 28 has a tubular member 281 and an oil absorbing sheet 282 . The step shaft 21 passes through the inner side of the tubular member 281 . The cylindrical member 281 covers the ends 24a of the two step collars 24 located between the two side frames 252. As shown in FIG. The oil absorbing sheet 282 is arranged inside the tubular member 281 and is capable of absorbing oil. An inflow port 284 that communicates with the inside of the tubular member 281 is provided between both ends 281 a of the tubular member 281 and the step collar 24 .

A step shaft 21 of the step 2 is generally connected to an endless step chain 6 . Lubricating oil is supplied to the step chain 6 and the front wheel 22 to allow the step 2 to run smoothly. This lubricating oil flows from the step chain 6 and the front wheel 22 toward the center of the step shaft 21 along the step shaft 21 and the step collar 24 due to surface tension. On the other hand, the end 24a of the step collar 24 located between the two side frames 252 is closer to the center of the step shaft 21 than the front wheel 22 and the side frames 252 and is covered with the tubular member 281. The lubricating oil that has reached the end 24a of the step collar 24 drips from the end 24a of the step collar 24 covered with the tubular member 281. As shown in FIG. The dripped lubricating oil is absorbed by the oil absorbing sheet 282 inside the tubular member 281 .

Thereby, the storage device 28 can receive and store the lubricating oil running along the step shaft 21 and the step collar 24 . Therefore, the steps 2 of the present embodiment can prevent dripping lubricating oil from adhering to other steps 2 positioned below.

Further, in this embodiment, the cylindrical member 281 is attachable to and detachable from the step shaft 21 . As a result, the storage device 28 can be easily removed from the step shaft 21 and replaced when the storage device 28 has stored lubricating oil. Therefore, the step 2 of the present embodiment can continuously prevent dripped lubricating oil from adhering to other steps 2 positioned below by replacing the storage device 28 .

Further, in this embodiment, the tubular member 281 has a small window 285 that allows the inside of the tubular member 281 to be visually recognized. This allows the operator to visually check the amount of lubricating oil stored inside the storage device 28 from the outside. Therefore, the step 2 of the present embodiment makes it easier to determine when to clean the step 2 based on the amount of lubricating oil stored inside the storage device 28 .

In addition, in this embodiment, the tubular member 281 is provided with an oil drain hole 286 that communicates the inside and the outside of the tubular member 281 with each other. Lubricating oil that could not be absorbed by the oil absorbing sheet 282 remains stored inside the storage device 28 as surplus oil. This surplus oil can be discharged to the outside of cylindrical member 281 through oil drain hole 286 . As a result, the steps 2 of the present embodiment can be cleaned easily.

<Modification>
FIG. 6 is a rear view of a storage device 28 of a modified example. As shown in FIG. 6, the step 2 according to the modification includes two storage devices 28A having different lengths in the axial direction from the storage device 28 of the embodiment. The storage device 28A of the modified example is obtained by dividing the storage device 28 of the embodiment into two.

The two storage devices 28A, like the storage device 28, cover the edge 24a of the step collar 24 located between the two side frames 252 of the support frame 25. As shown in FIG. Each storage device 28A is provided with an oil drain hole 286 as in the above-described embodiment.

The two reservoirs 28A are spaced apart from each other. Therefore, the vicinity of the center of the step shaft 21 does not have to be covered with the storage device 28A. Note that the step 2 according to the modification may further include another storage device 28A that covers the vicinity of the center of the step shaft 21. As shown in FIG.

Each storage device 28A has a shorter length in the longitudinal direction than the storage device 28 of the previous embodiment. This allows the operator to easily install, replace, and clean each storage device 28A even in a narrow space.

In the modified example, the storage device 28A is obtained by dividing the storage device 28 of the above embodiment into two, but the storage device 28 of the above embodiment may be divided into three or four, for example. At least one of the plurality of reservoirs 28 covers the edge 24a of the step collar 24. As shown in FIG.

Although the embodiment of the present invention has been described above, this embodiment is presented as an example and is not intended to limit the scope of the invention. This embodiment can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. This embodiment and its modifications are included in the scope and gist of the invention, as well as the scope of the invention described in the claims and its equivalents.

1 passenger conveyor, 2 steps (steps), 21 step axle (axle), 21a end, 22 front wheel (wheel), 24 step collar (collar), 24a end, 25 support frame, 252 side frame, 26 cleat (tread), 28, 28A storage device, 281 cylindrical member, 281a end, 282 oil absorbing sheet (oil absorbing material), 284 inlet (gap), 285 small window (transparent part), 286 oil drain hole (hole), 4 guide rail, 6 Step Chain (Chain)

Claims (5)

axis and
two wheels provided at both ends of the shaft;
two collars positioned between the two wheels and covering the axle at spaced apart positions in the direction of extension of the axle;
a support frame having two side frames each attached to said axle via a corresponding one of said two collars and supporting a tread;
a cylindrical member, through which the shaft penetrates and which covers the ends of the two collars positioned between the two side frames; and an oil absorbing material disposed inside the cylindrical member and capable of absorbing oil. a storage device having a gap communicating with the inside of the tubular member between the end of the tubular member and the collar;
a step comprising The cylindrical member is detachable from the shaft,
2. The step of claim 1. The tubular member has a transparent portion that makes the inside of the tubular member visible,
3. A step according to claim 1 or 2. The tubular member is provided with a hole that communicates the inside and the outside of the tubular member,
A step according to any one of claims 1-3. a step according to any one of claims 1 to 4;
an endless chain connected to the shaft;
two guide rails capable of supporting the two wheels;
passenger conveyor.

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