JP2023035368A - Maintenance tool for passenger conveyor - Google Patents

Abstract

To provide a maintenance tool for a passenger conveyor, which can further improve efficiency of detachment work of a guide roller.SOLUTION: A maintenance tool 8 for a passenger conveyor is used for attaching/detaching a guide roller 5 to/from a handrail. The handrail has an ear 7 forming an edge of an opening 6 provided on the backside in a longitudinal direction. The guide roller 5 is inserted from above the opening 6 into the handrail to guide the movement of the handrail. The holding tool 8 comprises a pair of expansion plates 9 and a displacement mechanism 10. The pair of expansion plates 9 oppose each other to be parallel to each other with a horizontal gap. The displacement mechanism 10 is connected to an upper part of each of the pair of expansion plates 9. The displacement mechanism 10 maintains the pair of expansion plates 9 parallel to each other and displaces a gap between the pair of expansion plates 9. The holding tool 8 stands by itself when an outer surface 11 outside each of the expansion plates 9 in a horizontal direction comes into contact with the ear 7 of the handrail from the inside in the horizontal direction and a lower end of each of the expansion plates 9 comes into contact with an inner surface of the handrail from above.SELECTED DRAWING: Figure 8

Description

The present disclosure relates to maintenance tools for passenger conveyors.

Patent Literature 1 discloses an example of an escalator handrail attachment/detachment tool. In the attachment/detachment tool, the movable hook is connected to the operating lever so as to move on the body lever by rotating the end of the movable lever as a fulcrum. A movable hook and a fixed hook on the body lever hang over the ears of the handrail. The movable hook and fixed hook increase the distance between the ears when the movable lever is rotated.

JP-A-7-277660

In escalator maintenance work, guide rollers that guide the movement of the handrail on its return path are sometimes attached to and detached from the handrail through an opening on the back side of the handrail. Here, the guide roller and the handrail may not be fixed when the guide roller is attached or detached. At this time, the operator who attaches and detaches the guide rollers needs to support both the guide rollers and the handrail. On the other hand, if the attachment/detachment tool of Patent Document 1 is used for attaching/detaching the guide roller, the movable lever and the main body lever of the attachment/detachment tool are positioned largely to one side of the handrail in the left-right direction. In addition to rollers and handrails, removal tools must also be supported. For this reason, two or more workers are required, and there is a possibility that the efficiency of the attachment/detachment work of the guide rollers will be lowered.

The present disclosure relates to solving such problems. The present disclosure provides a maintenance tool for a passenger conveyor that can improve the efficiency of attaching and detaching guide rollers.

A maintenance tool for a passenger conveyor according to the present disclosure is a guide roller that is inserted inside the handrail from above an opening along the longitudinal direction provided on the back side of the handrail on the return path of the handrail of the passenger conveyor and guides the movement of the handrail. A maintenance tool used for attaching/detaching to/from the handrail, comprising: a pair of extension plates facing each other in parallel with each other with a space in the left-right direction; and a displacement mechanism for displacing the gap between the pair of expansion plates by keeping the expansion plates parallel to each other, wherein the laterally outer outer surface of each of the pair of expansion plates extends to the left and right of the ears forming the edges of the opening. The handrail can stand on its own by contacting from the inside of the direction and the lower end of each of the pair of extension plates coming into contact with the inner surface of the handrail from above.

With the maintenance tool according to the present disclosure, the efficiency of attaching and detaching the guide rollers of the passenger conveyor can be improved.

1 is a configuration diagram of a passenger conveyor according to Embodiment 1; FIG. FIG. 2 is a cross-sectional view of a plane perpendicular to the longitudinal direction of the handrail according to Embodiment 1; 1 is a front view of a maintenance tool according to Embodiment 1; FIG. 1 is a side view of the maintenance tool according to Embodiment 1; FIG. It is the figure which looked at the handrail which concerns on Embodiment 1 from the side. 1 is a perspective view of a handrail and a maintenance tool according to Embodiment 1; FIG. FIG. 2 is a cross-sectional view of a plane perpendicular to the longitudinal direction of the handrail according to Embodiment 1; 1 is a perspective view of a handrail and a maintenance tool according to Embodiment 1; FIG. FIG. 11 is a side view of the maintenance tool according to Embodiment 2;

Modes for implementing the subject matter of the present disclosure will be described with reference to the accompanying drawings. In each figure, the same or corresponding parts are denoted by the same reference numerals, and overlapping descriptions are appropriately simplified or omitted. It should be noted that the subject of the present disclosure is not limited to the following embodiments, and modifications of any constituent elements of the embodiments, or modifications of any constituent elements of the embodiments, within the scope of the present disclosure. It can be omitted.

Embodiment 1.
FIG. 1 is a configuration diagram of a passenger conveyor 1 according to Embodiment 1. As shown in FIG.

A passenger conveyor 1 is applied to a facility. The facility is, for example, an indoor facility, an outdoor facility, or a complex facility. A passenger conveyor 1 is a device for carrying and transporting passengers in a facility. In this example, the facility has multiple floors. The passenger conveyor 1 is, for example, an inclined escalator. A passenger conveyor 1 spans between the upper and lower floors of the facility. At this time, the passenger conveyor 1 transports passengers between the upper and lower floors. Doors 2 for passenger conveyors 1 are provided on the upper and lower floors of the facility. The boarding/alighting gate 2 is a place where passengers board/alight from the passenger conveyor 1. - 特許庁One boarding/alighting gate 2 is a boarding/alighting gate 2 on the departure side where passengers board the passenger conveyor 1.例文帳に追加The other boarding/alighting gate 2 is a boarding/alighting gate 2 on the arrival side where passengers get off the passenger conveyor 1. - 特許庁

A passenger conveyor 1 includes a plurality of steps 3 and a pair of handrails 4.

Each step 3 is a device that circulates by driving force generated by a motor (not shown) or the like. Each step 3 moves on the outward route from the boarding/alighting gate 2 on the departure side to the boarding/alighting gate 2 on the arrival side, and moves on the return route below the outward route from the boarding/alighting gate 2 on the arrival side to the boarding/alighting gate 2 on the departure side. A plurality of steps 3 are arranged in a stepped manner on the inclined portion of the outward path.

Each handrail 4 is a device that circulates by driving force generated by a motor or the like. Each handrail 4 moves on the outward route from the boarding/alighting gate 2 on the departure side to the boarding/alighting gate 2 on the arrival side, and moves on the return route below the outward route from the boarding/alighting gate 2 on the arrival side to the boarding/alighting gate 2 on the departure side. Each handrail 4 is made of a flexible annular member. One handrail 4 is arranged on the left side of the steps 3 . The other handrail 4 is arranged on the right side of the steps 3 . Each of the handrails 4 moves while being guided by a guide rail (not shown) on the outward path or the like. Each handrail 4 moves while being guided by guide rollers 5, for example, on a part of the return path. The guide roller 5 is arranged, for example, on the slope of the return path.

In normal operation, the passenger conveyor 1 transports a passenger standing on one of the steps 3 while holding the front side of one of the handrails 4, for example, by driving force generated by a motor or the like. At this time, each step 3 moves, for example, at a preset normal speed. Each handrail 4 circulates at a moving speed corresponding to a plurality of steps 3. - 特許庁

FIG. 2 is a cross-sectional view taken along a plane perpendicular to the longitudinal direction of the handrail 4 according to the first embodiment.
In FIG. 2 a cross-section of the handrail 4 on the way back is shown.

The cross-sectional shape of the handrail 4 is C-shaped. On the underside of the handrail 4 an opening 6 is provided along the longitudinal direction. On the return trip, the opening 6 is directed upwards. In the handrail 4, ear portions 7 forming edges of the opening 6 are provided on both left and right sides. Ears 7 border the inner and outer sides of handrail 4 . In this example, the inside of the handrail 4 is made of cloth such as canvas. The outside of the handrail 4 is made of rubber or the like.

A guide roller 5 for guiding the handrail 4 on the return path is inserted into the handrail 4 from above the opening 6 . The diameter of the guide roller 5 is smaller than the width of the inner side of the handrail 4 in the horizontal direction. The diameter of the guide roller 5 is larger than the normal lateral width of the opening 6 of the handrail 4 . The width of the opening 6 during normal operation is, for example, the width of the opening 6 during normal operation of the passenger conveyor 1 . The normal width of the opening 6 may be, for example, a design value for the width of the handrail 4 . The guide roller 5 is fixed to a structure such as an angle member during normal operation of the passenger conveyor 1 . The structure is, for example, a part of the equipment fixed to the facility such as the truss of the passenger conveyor 1, or a member fixed to the equipment such as the truss. The guide roller 5 contacts the inner side of the handrail 4 and guides the movement of the handrail 4 so that the handrail 4 does not shift laterally.

Here, in the maintenance work of the passenger conveyor 1, the handrail 4 may be replaced. At this time, the guide roller 5 is attached to and detached from the handrail 4 . Since the diameter of the guide roller 5 is larger than the normal width of the opening 6 of the handrail 4, the maintenance worker widens the width of the opening 6 using a maintenance tool not shown in FIG. Attaching/detaching to/from the handrail 4 is performed.

FIG. 3 is a front view of the maintenance tool 8 according to Embodiment 1. FIG.

The maintenance tool 8 has a pair of extension plates 9 and a displacement mechanism 10 .

Each extension plate 9 is a plate-like member. A pair of expansion plates 9 are arranged parallel to each other. A pair of expansion plates 9 are arranged with a gap in the left-right direction. Each extension plate 9 has an outer surface 11 and its back surface. In this example, the outer surface 11 of each extension plate 9 is a flat plane. Each extension plate 9 is arranged so that the normal to the outer surface 11 faces outward in the left-right direction. In this example, the underside of the outer surface 11 of each extension plate 9 is a flat plane. The normal line of the back surface of the outer surface 11 of each expansion plate 9 faces inward in the left-right direction. The pair of expansion plates 9 are opposed to each other with the back surfaces of the outer surfaces 11 facing each other.

The displacement mechanism 10 is a part that displaces the gap between the pair of expansion plates 9 . The displacement mechanism 10 includes a pair of base portions 12 , a detent 13 , a bolt 14 , an operating portion 15 and a restricting member 16 .

Each base 12 is connected to the top of one of the extension plates 9 . In this example, each base 12 is integrally provided with an extension plate 9 to which it is connected. The set of expansion plates 9 to which the base portion 12 is integrally connected has a symmetrical shape with respect to the left-right direction. Each base 12 protrudes laterally outward from the outer surface 11 of the extension plate 9 to which it is connected. Each base 12 is provided with two holes penetrating in the left-right direction. In each base 12, two holes are aligned one above the other. Each base 12 is threaded, for example, on the inside of the lower hole.

The detent 13 is a rod-shaped member. A detent 13 is passed through an unthreaded hole in each base 12 . A bolt 14 is passed through a threaded hole in each base 12 . The displacement mechanism 10 maintains the pair of extension plates 9 in parallel and displaces the gap between the pair of extension plates 9 by rotating the bolt 14 . At this time, the rotation of the extension plate 9 to which the base 12 is integrally connected is suppressed by the anti-rotation 13 in the left-right direction. The displacement mechanism 10 displaces the distance between the pair of expansion plates 9 so that the distance between the outer surfaces 11 of the expansion plates 9 in the left-right direction can be varied within a range from a first distance to a second distance. Here, the first distance is a distance narrower than the normal width of the opening 6 in the horizontal direction. The second interval is a interval wider than the normal width of the opening 6 in the left-right direction. The second spacing is sufficiently narrower than the width of the opening 6 such that deformation widening the opening 6 could damage the handrail 4 .

The operation part 15 is a part where an operator performs an operation of displacing the gap between the pair of expansion plates 9 . The operation part 15 is, for example, a handle provided at the end of the bolt 14 and for rotating the bolt 14 . The operating portion 15 is arranged outside the outer surface 11 of one of the expansion plates 9 in the left-right direction. The lateral distance between the operating portion 15 and the outer surface 11 of the extension plate 9 is longer than the distance from the edge of the opening 6 of the handrail 4 to the outer edge of the handrail 4 in the lateral direction. That is, the operating portion 15 is arranged so as to be positioned further outside in the left-right direction than the outer end portion of the handrail 4 in the left-right direction.

The regulating member 16 is a member that regulates the spacing in the left-right direction between the outer surfaces 11 of the expansion plates 9 from becoming wider than the second spacing. The restricting member 16 is, for example, a snap ring or a pin provided at the position of the bolt 14 corresponding to the distance between the outer surfaces 11 that is the second distance.

FIG. 4 is a side view of the maintenance tool 8 according to Embodiment 1. FIG.

The shape of each extension plate 9 is a chamfered rectangular shape. Each extension plate 9 has a symmetrical shape with respect to the front-rear direction. At the lower end of each extension plate 9, a straight side is provided. Each extension plate 9 is chamfered at the front-rear end of the side.

Each base 12 is provided at the center of the extension plate 9 in the front-rear direction. The shape of the lower end of each base 12 is cylindrical. Each expansion plate 9 to which the base portion 12 is integrally connected has a symmetrical shape with respect to the front-rear direction. In other words, the maintenance tool 8 excluding the operating portion 15 is provided symmetrically with respect to the front-rear direction and the left-right direction.

Next, an example of work for mounting the guide roller 5 to the handrail 4 using the maintenance tool 8 will be described with reference to FIGS. 5 to 7. FIG.
FIG. 5 is a side view of the handrail 4 according to Embodiment 1. FIG.
6 and 8 are perspective views of the handrail 4 and the maintenance tool 8 according to Embodiment 1. FIG.
FIG. 7 is a cross-sectional view taken along a plane perpendicular to the longitudinal direction of the handrail 4 according to the first embodiment.

As shown in FIG. 5, the worker puts a maintenance tool on the handrail 4 in the vicinity of the part where the guide roller 5 is provided on the way back so that the lower part of the extension plate 9 is put inside the handrail 4 from above the opening 6. put 8. At this time, the spacing between the pair of extension plates 9 is adjusted by the displacement mechanism 10 so that the spacing in the lateral direction between the outer surfaces 11 of the extension plates 9 is about the first spacing. Since the base portion 12 protrudes outward in the left-right direction, the cylindrical portion of the base portion 12 rides on the ear portion 7 of the handrail 4 . Thereby, even when the width of the opening 6 is not widened, the maintenance tool 8 can be easily and stably placed on the handrail 4 on the way home.

After that, the worker raises the maintenance tool 8 so that the vertical direction of the maintenance tool 8 is perpendicular to the longitudinal direction of the handrail 4 . At this time, the front-rear direction of the maintenance tool 8 and the front-rear direction in the traveling direction of the handrail 4 match. Each extension plate 9 contacts the inner surface of the handrail 4 from above with the lower edge along the longitudinal direction of the handrail 4 .

As shown in FIG. 6 , the operator widens the distance between the pair of extension plates 9 by operating the operation portion 15 of the displacement mechanism 10 . By increasing the distance between the pair of extension plates 9, the outer surface 11 of the left extension plate 9 comes into contact with the left ear portion 7 from the right direction. The outer surface 11 of the right extension plate 9 contacts the right ear 7 from the left.

In FIG. 7, a cross section of the portion where the maintenance tool 8 is placed on the return path of the handrail 4 is shown.
As shown in FIG. 7 , the outer surface 11 of each extension plate 9 contacts the ear portion 7 from the inside in the left-right direction to widen the width of the opening 6 of the handrail 4 . In addition, the lower edge of each extension plate 9 contacts the inner surface of the handrail 4 from above. At this time, the portion of the inner surface of the handrail 4 with which the lower end of each extension plate 9 contacts from above is different from the ear portion 7 with which the outer surface 11 of the extension plate 9 contacts from the inside in the left-right direction. The maintenance tool 8 stands on its own by contacting the handrail 4 at four points.

The operator inserts the loose guide roller 5 into the inside of the handrail 4 through the opening 6 widened by the maintenance tool 8, as shown in FIG. At this time, since the maintenance tool 8 is self-supporting, the operator does not need to support the maintenance tool 8 . Therefore, for example, by supporting the guide roller 5 with one hand and supporting the handrail 4 with the other hand, even a single operator can easily insert the guide roller 5. . After inserting the guide roller 5 inside the handrail 4, the worker narrows the gap between the pair of extension plates 9. - 特許庁As a result, the width of the opening 6 of the handrail 4 returns to its normal width due to the elastic force of the handrail 4 or the like. After that, the worker fixes the guide roller 5 to the structure of the passenger conveyor 1 such as an angle member, and completes the operation of attaching the guide roller 5 to the handrail 4 .

The worker may repeat the same work when a plurality of guide rollers 5 are provided. Alternatively, a plurality of guide rollers 5 may be continuously inserted by moving the guide roller 5 inserted from the vicinity of the maintenance tool 8 that widens the width of the opening 6 inside the handrail 4 . The operator also inserts the guide roller 5 for the handrail 4 on the opposite side by performing the same operation. At this time, since the maintenance tool 8 has a symmetrical shape with respect to the left-right direction and the front-rear direction, the worker can perform the same work using the same maintenance tool 8 . Also, when removing the guide rollers 5 from the handrail 4, the worker can perform the work more easily by widening the width of the opening 6 of the handrail 4 using the maintenance tool 8 in the same procedure.

As described above, the maintenance tool 8 for the passenger conveyor 1 according to Embodiment 1 is used for attaching and detaching the guide roller 5 to and from the handrail 4 . Here, the handrail 4 has ears 7 forming edges of an opening 6 along the longitudinal direction provided on the back side. A guide roller 5 is inserted inside the handrail 4 from above the opening 6 to guide the movement of the handrail 4 . The maintenance tool 8 has a pair of extension plates 9 and a displacement mechanism 10 . The pair of expansion plates 9 are opposed to each other in parallel with a gap in the left-right direction. A displacement mechanism 10 is connected to the top of each of the pair of extension plates 9 . The displacement mechanism 10 keeps the pair of extension plates 9 parallel and displaces the gap between the pair of extension plates 9 . The maintenance tool 8 is configured such that the lateral outer surface 11 of each extension plate 9 is in contact with the ear portion 7 of the handrail 4 from the lateral inner side, and the lower end of each extension plate 9 is above the inner surface of the handrail 4 . It becomes independent by contacting from.

With such a configuration, the maintenance tool 8 that widens the opening 6 of the handrail 4 can stand on its own, so that the operator does not need to support the maintenance tool 8 . As a result, by using a free hand to support the handrail 4 or the guide roller 5, even one worker can easily insert the guide roller 5. - 特許庁Alternatively, by using a free hand to maintain a working posture, it is possible to suppress deterioration of workability even in a place where it is difficult to work, such as an inclined portion of the passenger conveyor 1 . Since the opening 6 of the handrail 4 is widened by the maintenance tool 8, there is no need for the worker to apply force to directly widen the opening 6 of the handrail 4 when inserting and removing the guide roller 5.例文帳に追加As for the hard handrail 4 such as a new handrail 4, the operation of inserting and removing the guide roller 5 becomes easier. In addition, since the maintenance tool 8 is provided compactly so as to be insertable inside the handrail 4, the width of the opening 6 of the handrail 4 can be more easily widened even in a narrow working space through which the handrail 4 passes on the return side. become. Therefore, the efficiency of attaching and detaching the guide roller 5 can be further enhanced.

Further, the displacement mechanism 10 displaces the distance between the pair of expansion plates 9 so that the distance between the outer surfaces 11 of the expansion plates 9 can change from the first distance to the second distance. Here, the first interval is narrower than the normal width of the opening 6 in the horizontal direction. In addition, the second interval is wider than the width of the opening 6 in the horizontal direction in the normal state.

With such a configuration, the interval between the outer surfaces 11 is narrowed to the first interval, thereby facilitating the insertion of the maintenance tool 8 inside the handrail 4 . Further, by widening the space between the outer surfaces 11 of the maintenance tool 8 inserted inside the handrail 4 to the second space, the width of the opening 6 of the handrail 4 can be made wider than the normal width. As a result, the efficiency of attaching and detaching the guide roller 5 can be further enhanced.

Further, the displacement mechanism 10 includes a restricting member 16 . The regulating member 16 regulates that the space between the outer surfaces 11 of the expansion plates 9 is wider than the second space.

With such a configuration, the width of the handrail 4 that is widened by the extension plate 9 is regulated, so that the handrail 4 is prevented from being damaged by widening the width of the opening 6 too much.

Further, each expansion plate 9 contacts the inner surface of the handrail 4 from above at the lower edge along the longitudinal direction of the handrail 4 .

With such a configuration, the extension plate 9 and the inner surface of the handrail 4 are brought into contact with each other in more areas, so that the maintenance tool 8 can stand on its own with greater stability.

In addition, the sides of the lower ends of the respective expansion plates 9 are chamfered at the ends in the front-rear direction.

With such a configuration, the inner surface of the handrail 4 is less likely to be damaged by the lower end portion of the extension plate 9 .

Further, each expansion plate 9 is provided symmetrically with respect to the front-rear direction. The displacement mechanism 10 is connected to the front-rear center of the upper portion of each extension plate 9 .

With such a configuration, the worker can perform work using the maintenance tool 8 in the same procedure for both the left and right handrails 4 . Therefore, the efficiency of attaching and detaching the guide roller 5 can be further enhanced. In addition, since the unevenness of the weight of the maintenance tool 8 in the front-rear direction due to the displacement mechanism 10 is suppressed, the stability of the self-standing of the maintenance tool 8 is further enhanced.

The displacement mechanism 10 also has a base 12 connected to the top of each extension plate 9 . The base portion 12 protrudes laterally outward from the outer surface 11 of the extension plate 9 to which it is connected.

With such a configuration, the base 12 rides on the ears 7 of the handrail 4 when the maintenance tool 8 is placed on the handrail 4 . Thereby, even when the width of the opening 6 is not widened, the maintenance tool 8 can be easily and stably placed on the handrail 4 on the way home. Therefore, it is not necessary to hold the maintenance tools 8 before widening the width of the opening 6, so that the efficiency of attaching and detaching the guide rollers 5 can be improved.

Further, the displacement mechanism 10 has an operation portion 15 for performing an operation of displacing the gap between the pair of expansion plates 9 outside the outer surface 11 of one of the expansion plates 9 . The lateral distance between the operating portion 15 and the outer surface 11 of the extension plate 9 is longer than the distance from the edge of the opening 6 of the handrail 4 to the lateral outside of the handrail 4 .

With such a configuration, the operator can operate the displacement mechanism 10 via the operation portion 15 without interfering with the handrail 4 . As a result, the efficiency of attaching and detaching the guide roller 5 can be further enhanced.

In this example, each expansion plate 9 is a rectangular plate-shaped member with a uniform thickness, so the weight per unit height of each expansion plate 9 is constant. On the other hand, the weight per unit height of each extension plate 9 may not be constant. For example, the center of gravity of the maintenance tool 8 may be lowered by increasing the weight per unit height of each extension plate 9 toward the lower portion so that the maintenance tool 8 can stand on its own more stably. For example, each extension plate 9 may be formed so that the weight per unit height at the lower end is greater than the weight per unit height at the portion where the outer surface 11 contacts the ear 7 . For example, each expansion plate 9 may be a trapezoidal plate-like member whose width in the front-rear direction widens downward. Alternatively, each extension plate 9 may be a plate-like member whose thickness increases downward. Alternatively, each expansion plate 9 may be provided with a weight inside the lower end.

Moreover, the maintenance tool 8 may be provided with a fall prevention tool (not shown). The fall prevention tool is a device that prevents the maintenance tool 8 from dropping downward from the handrail 4 . The fall prevention device has a linear portion such as a cord or chain. One end of the linear portion is attached to a part of the maintenance tool 8 such as the detent 13, for example. At the other end of the linear portion, for example, a clip or the like is provided. The clips are attached to structures of the passenger conveyor 1, such as angles, for example. As a result, the maintenance tool 8 is prevented from falling off the handrail 4, so that the efficiency of the attachment/detachment work of the guide roller 5 is further suppressed.

Further, when the worker uses the maintenance tool 8 under the guide roller 5, the self-supporting maintenance tool 8 serves as a stopper to prevent the guide roller 5 from sliding downward. At this time, it is difficult for the guide rollers 5 to slip down, which reduces the efficiency of the attaching/detaching operation of the guide rollers 5.

Also, the passenger conveyor 1 may not be an inclined escalator. Passenger conveyor 1 may be, for example, a moving walkway or a moving ramp.

Embodiment 2.
In the second embodiment, the differences from the example disclosed in the first embodiment will be described in detail. Any feature of the example disclosed in the first embodiment may be employed for features not described in the second embodiment.

FIG. 9 is a side view of the maintenance tool 8 according to Embodiment 2. FIG.

On the outer surface 11 of each extension plate 9, a contact surface 17 made of elastic is provided. The contact surface 17 is made of, for example, a rubber sheet. The contact surface 17 is provided on a portion of the outer surface 11 that contacts the ear portion 7 . The contact surface 17 is provided, for example, in a strip shape on a portion of the outer surface 11 that has a height that contacts the ear portion 7 . Since each extension plate 9 comes into contact with the ear portion 7 of the handrail 4 at the contact surface 17 made of an elastic body, the handrail 4 is less likely to be damaged by contact with the maintenance tool 8. - 特許庁The contact surface 17 may be provided on the entire outer surface 11 of each extension plate 9 .

1 Passenger Conveyor 2 Entrance/Exit 3 Step 4 Handrail 5 Guide Roller 6 Opening 7 Ear Part 8 Maintenance Tool 9 Extension Plate 10 Displacement Mechanism 11 Outer Surface 12 Base 13 Whirl Stop 14 Bolt 15 operation part, 16 regulation member, 17 contact surface

Claims (10)

A maintenance tool used for attaching and detaching a guide roller to and from a handrail of a passenger conveyor, which is inserted into the handrail from above an opening along the longitudinal direction provided on the back side of the handrail and guides the movement of the handrail. and
a pair of extension plates facing each other so as to be parallel to each other with an interval in the left-right direction;
a displacement mechanism connected to the upper part of each of the pair of expansion plates and configured to maintain the pair of expansion plates parallel to displace the gap between the pair of expansion plates;
with
The laterally outer outer surface of each of the pair of extension plates contacts the ear portion forming the edge of the opening from the laterally inner side, and the lower end of each of the pair of extension plates is above the inner surface of the handrail. A maintenance tool for a passenger conveyor that becomes independent by coming into contact with it. In the displacement mechanism, the distance between the outer surfaces of each of the pair of extension plates is changed from a first distance narrower than the normal width of the opening in the horizontal direction to a second distance wider than the normal width of the opening in the horizontal direction. 2. A maintenance tool for a passenger conveyor according to claim 1, wherein the spacing between said pair of extension plates is displaced so as to vary by up to two spacings. The displacement mechanism is
3. The maintenance tool for a passenger conveyor according to claim 2, further comprising: a restricting member that restricts the space between the outer surfaces of the pair of expansion plates from expanding beyond the second space. The maintenance tool for a passenger conveyor according to any one of claims 1 to 3, wherein each of the pair of extension plates contacts the inner surface of the handrail at the lower edge along the longitudinal direction of the handrail. 5. The maintenance tool for a passenger conveyor according to claim 4, wherein the lower edge of each of the pair of extension plates is chamfered at the front-rear end. Each of the pair of expansion plates is provided symmetrically with respect to the front-rear direction,
The maintenance tool for a passenger conveyor according to any one of claims 1 to 5, wherein the displacement mechanism is connected to the front-rear center of the upper portion of each of the pair of extension plates. The pair of extension plates according to any one of claims 1 to 6, wherein a contact surface made of an elastic body is provided on the outer surface of each of the pair of extension plates, and the contact surface contacts the ear portion of the handrail. Passenger conveyor maintenance tool. 8. The displacement mechanism has a base portion connected to the upper portion of each of the pair of extension plates, and the base portion protrudes outward in the left-right direction from the outer surface of the extension plate to which the displacement mechanism is connected. A maintenance tool for a passenger conveyor according to any one of Claims 1 to 3. The displacement mechanism has an operation portion for performing an operation of displacing the gap between the pair of expansion plates outside the outer surface of one of the pair of expansion plates, and the operation portion and the outer surface of the expansion plate. is longer than the distance from the edge of the opening of the handrail to the outer side of the handrail in the left-right direction. 10. Each of the pair of expansion plates has a weight per unit height at a lower end portion that is heavier than a weight per unit height at a portion where the outer surface contacts the ear portion. Maintenance tools for passenger conveyors as described in paragraph 1.

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