JP6881489B2 - Manhole cover for passenger conveyor and passenger conveyor equipped with it - Google Patents

Description

The present invention relates to a manhole cover for accessing the machine room of a passenger conveyor such as an escalator or a moving walkway.

Passenger conveyors such as elevators and moving walkways have a machine room below the entrance. A manhole is formed at the entrance for entering and exiting the machine room. Manholes are usually closed with a manhole cover, and maintenance personnel open the manhole cover during maintenance and inspection work.

As this type of manhole cover, Patent Document 1 discloses a manhole plate divided into a plurality of parts. Then, when opening the manhole cover, a special tool is screwed into the manhole plate, and the manhole plate is lifted and removed. Even when the manhole cover is composed of two or more manhole plates, one manhole plate may weigh 20 kg or more.

In Patent Document 2, the manhole cover is composed of a plurality of manhole plates connected by hinges, and the manhole plates are folded and leaned on the manhole.

Japanese Unexamined Patent Publication No. 2000-289960 Japanese Unexamined Patent Publication No. 2006-103872

Since the entrance / exit of the escalator is not wide enough as a work space, it is difficult to lift and carry a heavy manhole plate as in Patent Document 1. Further, when the entrance / exit is long, the number of manhole plates increases, and it takes a considerable amount of time to remove and install the manhole plates.

In Patent Document 2, the manhole plate does not have to be lifted and transported, but the manhole plate is leaned against when the step is removed and transported to the work area for cleaning, or when a maintenance person moves on the manhole. May get in the way.

An object of the present invention is to provide a manhole cover for a passenger conveyor that does not require lifting or leaning.

The manhole cover of the passenger conveyor of the present invention
A manhole cover that closes the manhole that communicates with the machine room of the passenger conveyor.
A shutter formed by connecting a plurality of slats bridged in the width direction of the manhole,
A rail that is installed in the manhole and on which the shutter travels, and is a rail in which a horizontal portion horizontal along the opening edge of the manhole and a vertical portion that has entered the machine chamber are connected by a curved bending portion.
To have.

A rollable roller is provided on each of the slats, and the roller may be configured to run on the rail.

It is desirable to have a lid plate that can open and close the upper part of the bent portion of the rail.

It is desirable that the bent portion of the rail is formed on the building side of the manhole.

Further, in the passenger conveyor of the present invention, the manhole communicating with the machine room is closed by the manhole cover.

The manhole cover of the passenger conveyor of the present invention has a shutter structure that allows the manhole to be slidably opened and closed. Therefore, when opening the manhole in maintenance / inspection work, it is not necessary to lift the manhole cover to carry or lean it, so that workability can be improved. Further, by bending the rail so as to enter the machine room, the shutter is housed in the machine room when the manhole is released, so that it does not interfere with maintenance and inspection work. Further, since the shutter is simply slid, the work man-hours do not change even when the entrance / exit is long, and the workability can be improved.

FIG. 1 is a diagram showing a schematic configuration of an escalator. FIG. 2 is a cross-sectional view of the machine room. FIG. 3 is a cross-sectional view of a machine room with an open manhole. FIG. 4 is a cross-sectional view of the slats constituting the shutter.

Embodiments of the present invention will be described with reference to the drawings. In the following description, the escalator 10 will be taken as an example of the passenger conveyor, but the passenger conveyor may be a so-called moving walkway or the like.

As shown in FIG. 1, the escalator 10 according to the embodiment of the present invention is configured by circulating a step 12 together with a handrail 16 between the upper floor 20 and the lower floor 21. The truss 11 forming the framework of the escalator 10 is provided with sprockets 13 and 14 on the upper and lower sides, and a step chain 15 for circulating the step 12 is hung between the sprockets 13 and 14.

Machine rooms 30 and 31 are provided in the truss 11 at the entrance / exit 22 of the escalator 10, respectively. In the illustrated embodiment, a drive motor 17 for rotating the drive sprocket 13 and a control unit 18 for the escalator 10 are arranged in the machine room 30 on the upper floor side. A manhole 50 accessible to maintenance personnel is formed in the machine rooms 30 and 31, and the manhole 50 is normally closed by a manhole cover 60 to form a part of a user's entrance / exit 22. Although the manhole cover 60 on the upper floor 20 will be described below, the same configuration can be applied to the machine room 31 on the lower floor 21.

As shown in FIGS. 2 and 3, the manhole 50 has a manhole 50 communicating with the machine room 30 between the floor 20 on the building side and the landing plate 40 including the comb plate on the escalator side. In the present invention, the manhole cover 60 for opening and closing the manhole 50 is configured by the shutter 70, and the manhole 50 is closed by closing the shutter 70 as shown in FIG. 2, and during maintenance and inspection as shown in FIG. The manhole 50 is opened by storing the shutter 70 in the machine room 30.

More specifically, the manhole cover 60 includes a shutter 70 that closes the manhole 50, a rail 80 that guides the shutter 70, and an openable and closable lid plate 90 that closes a part of the manhole 50.

The shutter 70 is formed long in the width direction of the manhole 50, and can be configured by connecting a plurality of slats 71 that bridge the manhole 50 and connecting them flexibly. The shutter 70 is formed so that the length of the slats 71 connected to the shutter 70 is long enough to sufficiently close the manhole 50.

As shown in FIG. 4A, each slat 71 has a structure in which a metal plate 72 is bent in a U shape and a reinforcing plate 73 is arranged on the lower surface in order to reduce the weight while having strength. As shown in b), the tip of the metal plate 72 can be further bent inward to give strength. In the present embodiment, the rollable roller 74 is arranged on the reinforcing plate 73 on the lower surface of the slats 71.

Adjacent slats 71, 71 can be connected by chaining, interlocking, or overlapping. Of course, the connection method is not limited to this.

It is desirable that the slat 71 at the tip, and the slat 71a at the tip on the escalator side in the figure, be provided with a grip portion 75 such as a handle to be gripped when the maintenance worker opens and closes the shutter 70.

Further, it is desirable to provide a lock mechanism for maintaining the closed state of the shutter 70 so that the shutter 70 is not inadvertently opened when the shutter 70 is closed.

As shown in FIGS. 2 and 3, the rail 80 on which the shutter 70 travels has a horizontal portion 81 extending horizontally in the machine room 30 from the vicinity of the landing plate 40 along the opening edge of the manhole 50, and substantially in the vertical direction. The shape may include an extending vertical portion 82 and a curved bent portion 83 connecting the horizontal portion 81 and the vertical portion 82. It is desirable that the vertical portion 82 is formed on the building side of the machine room 30. As a result, when the shutter 70 is retracted, the shutter 70 is located in the corner, so that it does not interfere with the maintenance / inspection work.

Further, the rail 80 is provided with a derailment prevention guard 84 in parallel with the vertical portion 82 so that the roller 74 of the shutter 70 does not separate from the vertical portion 82.

The lid plate 90 is a plate that closes a gap 51 that is not completely closed by the shutter 70 when the shutter 70 is closed. The lid plate 90 can be formed to have a length that can be closed from the end of the manhole 50, that is, the end on the building side in the present embodiment to a position beyond the bent portion 83 of the rail 80. It is desirable that the lid plate 90 is installed on the floor 20 or the truss 11 by the hinge 91 so that the shutter 70 can be easily retracted and the shutter 70 can be pulled out easily. Further, it is desirable to provide a lock mechanism for preventing the lid plate 90 from being inadvertently opened when the lid plate 90 is closed.

As shown in FIG. 2, the manhole cover 60 having the above configuration closes the manhole 50 in a state where the shutter 70 is pulled up and placed on the horizontal portion 81 of the rail 80. As shown in FIG. 2, the lid plate 90 is closed so that the tip of the lid plate 90 touches the upper surface of the shutter 70. In this state, the shutter 70 and the lid plate 90 form a part of the entrance / exit 22 of the escalator 10 continuous with the floor 20, and the user can walk on them.

To perform maintenance and inspection work on the escalator 10, first open the lid plate 90 as shown in FIG. Then, the shutter 70 may be pulled toward the building by grasping the grip portion 75 of the slat 71a at the tip. As a result, the roller 74 rolls on the rail 80, moves beyond the bent portion 83 and is stored between the vertical portion 82 and the derailment prevention guard 84 as shown in FIG. 3, and the shutter 70 is stored in the manhole 50. Open. When the shutter 70 invades the vertical portion 82 to some extent, it invades the vertical portion 82 due to its own weight, so that the shutter 70 does not have to be continuously pulled until the end.

Since the shutter 70 opened by the above stays at the vertical portion 82 due to its own weight and does not return to the horizontal portion 81, it is not necessary to hold the shutter 70 by a lock mechanism or the like. Then, in this state, the maintenance staff can access the machine room 30 from the manhole 50, and can perform maintenance and inspection of the drive motor 17 and the control unit 18.

When the maintenance / inspection work is completed, as shown in FIG. 2, the shutter 70 may be pulled up by grasping the grip portion 75 of the slat 71a at the tip, and the lid plate 90 may be tilted to completely close the manhole 50. If the shutter 70 is heavy, a rope or the like of the grip portion 75 may be hung to connect the shutter 70 to the step 12 or the like, and the shutter 70 may be pulled up by the driving force of the drive motor 17.

According to the manhole cover 60 of the present invention, since the manhole 50 can be opened and closed simply by sliding the shutter 70, it is not necessary to lift and carry the manhole plate or lean against it, and workability is improved as much as possible. it can. Further, even if the entrance / exit 22 is long, the work man-hours do not change, so that the workability is good. Further, since the shutter 70 does not protrude from the manhole 50 like the manhole plate in the open state, it does not interfere with the maintenance / inspection work.

The above description is for explaining the present invention, and should not be construed as limiting or limiting the scope of the invention described in the claims. In addition, the configuration of each part of the present invention is not limited to the above embodiment, and it goes without saying that various modifications can be made within the technical scope described in the claims.

For example, although the shutter 70 can travel on the rail 80 by the rollers 74 provided on the lower surface of the slat 71, the rollers 74 may be arranged at both ends in the width direction of the slat 71. Further, instead of the roller 74, the slat 71 may have a block or shoe of a low friction resin such as a fluororesin arranged at a portion where the slat 71 comes into contact with the rail 80.

Further, in the above embodiment, the shutter 70 is manually opened and closed in order to simplify the configuration, but it is of course possible to operate the shutter 70 by a motor or the like.

10 Escalator 30 Machine room 50 Manhole 70 Shutter 71 Slat 80 Rail 90 Lid plate

Claims (4)

A manhole cover that closes the manhole that communicates with the machine room of the passenger conveyor.
A shutter formed by connecting a plurality of slats bridged in the width direction of the manhole,
A rail that is installed in the manhole and on which the shutter travels, and is a rail in which a horizontal portion horizontal along the opening edge of the manhole and a vertical portion that has entered the machine chamber are connected by a curved bending portion.
The equipped,
The shutter is a manual opening / closing type.
Comprising a lid plate for closing openably an upper portion of the bent portion of the rail, when opening and closing the shutter, it opens the lid plate,
Manhole cover for passenger conveyors. The shutter includes a roller that rolls the rail, and by manually pulling the shutter, it penetrates into the vertical portion by its own weight.
The manhole cover for the passenger conveyor according to claim 1. The manhole communicating with the machine room is closed by the manhole cover according to claim 1 or 2.
Conveyor for passengers. The method for opening and closing a manhole of a passenger conveyor according to claim 3.
A step of opening the lid plate and pulling the shutter in the opening direction to slide the shutter to open the manhole, and
After maintenance / inspection work, the process of pulling up the shutter and tilting the lid plate to close the manhole.
How to open and close the manhole on a passenger conveyor, including.

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