JP7020002B2 - Man conveyor - Google Patents

Description

The present invention relates to a man conveyor.

Patent Document 1 describes an escalator. The escalator described in Patent Document 1 includes a manhole cover. Manhole covers are used to close manholes. In the escalator described in Patent Document 1, a device for accommodating a manhole cover is provided in the manhole. When the escalator is maintained, the removed manhole cover is stowed inside the manhole.

Japanese Unexamined Patent Publication No. 8-73162

A control panel and the like are arranged in the manhole of the escalator. Therefore, the maintenance staff of the escalator enters the manhole and performs maintenance work.

Maintenance work on the escalator is also carried out in places other than the manhole. When maintenance personnel perform maintenance work in a place other than the manhole, it is preferable to block the manhole. However, the manhole cover is heavy, and there is a problem that frequent opening and closing of the manhole imposes a heavy burden on the maintenance staff. Such problems can also occur on moving walkways and the like.

The present invention has been made to solve the above-mentioned problems. An object of the present invention is to provide a manhole that allows maintenance personnel to easily open and close manholes during maintenance work.

The manhole according to the present invention has a manhole lid that closes the manhole, a support device that supports the manhole lid, a simple lid that is lighter than the manhole lid and is lighter than the manhole lid, and a simple lid for fixing the simple lid to the manhole lid. It is provided with a fixing member. The simple lid is supported by the support device if it is not fixed to the manhole cover by a fixing member. The width of the simple lid can be adjusted by expanding and contracting. Once the manhole cover is removed, it is possible to either block only part of the manhole or the entire manhole with a simple lid supported by a support device.

With the manhole according to the present invention, a maintenance worker can easily open and close the manhole during maintenance work.

It is sectional drawing which shows the example of the man conveyor in Embodiment 1. FIG. It is a figure which shows the entrance / exit of the lower part. It is the figure which looked at the upper entrance and exit from above. It is a figure which shows the state which removed the manhole cover from the entrance / exit. It is a figure which shows the state which removed the manhole cover and the simple cover from the entrance / exit. It is a figure which shows the AA cross section of FIG. It is a figure which shows the BB cross section of FIG. It is a figure which shows the BB cross section with the fixing bolt removed. It is a figure for demonstrating the procedure for removing a manhole cover. It is a figure which shows the BB cross section in the state which a tool is attached. It is a figure which shows the state which only the central part of a manhole is closed with a simple lid. It is a figure which shows another example of the man conveyor in Embodiment 1. FIG. It is a figure which shows another example of the man conveyor in Embodiment 1. FIG.

The present invention will be described with reference to the accompanying drawings. Overlapping description will be simplified or omitted as appropriate. In each figure, the same reference numeral indicates the same part or the corresponding part.

Embodiment 1.
FIG. 1 is a cross-sectional view showing an example of a man conveyor according to the first embodiment. FIG. 1 shows an escalator as an example of a man conveyor.

The escalator truss 1 is hung between the upper and lower floors. The escalator's own weight and load are supported by the truss 1. Manholes 2 and 3 are formed on the truss 1. The manhole 2 is a space formed at the upper end of the truss 1. The manhole 3 is a space formed at the lower end of the truss 1. Manholes 2 and 3 are also called machine rooms.

The escalator shown in FIG. 1 is provided with a manhole cover 4 and a simple lid 5 as members for closing the manhole 2. The manhole cover 4 closes above the manhole 2. The space above the manhole cover 4 is the upper entrance / exit 6. The upper surface of the manhole cover 4 forms the floor surface of the entrance / exit 6. The user steps on the manhole cover 4 when using the escalator. Therefore, the manhole cover 4 is formed of a metal plate or the like. The manhole 2 is completely closed by the manhole cover 4 in order to prevent the user from falling into the manhole 2.

The manhole cover 4 is removed by maintenance personnel when the escalator is maintained. While the escalator is being maintained, the manhole 2 is closed by a simple lid 5 as needed. In the example shown in this embodiment, the entire manhole 2 can be closed by the simple lid 5. Further, only a part of the manhole 2 can be closed by the simple lid 5. The simple lid 5 is lighter than the manhole cover 4. Therefore, the maintenance staff can easily open and close the manhole 2 when performing maintenance work.

The simple lid 5 is arranged below the manhole cover 4. If the manhole 2 is blocked by the manhole cover 4, the simple lid 5 cannot be seen from the entrance 6.

The escalator is provided with a manhole cover 7 and a simple lid 8 as members for closing the manhole 3. The manhole cover 7 closes above the manhole 3. The space above the manhole cover 7 is the lower entrance / exit 9. The upper surface of the manhole cover 7 forms the floor surface of the entrance / exit 9. The user steps on the manhole cover 7 when using the escalator. Therefore, the manhole cover 7 is formed of a metal plate or the like. The manhole 3 is completely closed by the manhole cover 7 to prevent the user from falling into the manhole 3.

The manhole cover 7 is removed by maintenance personnel when the escalator is maintained. While the escalator is being maintained, the manhole 3 is closed by a simple lid 8 as needed. In the example shown in this embodiment, the entire manhole 3 can be closed by the simple lid 8. Further, only a part of the manhole 3 can be closed by the simple lid 8. The simple lid 8 is lighter than the manhole cover 7. Therefore, the maintenance staff can easily open and close the manhole 3 when performing maintenance work.

The simple lid 8 is arranged below the manhole cover 7. If the manhole 3 is blocked by the manhole cover 7, the simple lid 8 cannot be seen from the entrance 9.

The manhole 2 is provided with, for example, an electric motor 10, a speed reducer 11, and a control panel 12. The electric motor 10 generates a driving force for driving the step 13. Step 13 carries a person and moves between the entrance 6 and the entrance 9. The operation of the electric motor 10 is controlled by the control panel 12. FIG. 1 shows an example in which a control panel 12 or the like is provided in an upper manhole 2. The control panel 12 and the like may be provided in the lower manhole 3.

FIG. 2 is a diagram showing a lower entrance / exit 9. FIG. 2 shows a state in which the manhole 3 is closed by the manhole cover 7. The manhole cover 7 is the same as the manhole cover 4. The simple lid 8 is the same as the simple lid 5. In the following, the configuration of the upper part of the escalator will be described in detail, and the description of the configuration of the lower part will be omitted.

FIG. 3 is a view of the upper entrance / exit 6 as viewed from above. FIG. 4 is a diagram showing a state in which the manhole cover 4 is removed from the entrance / exit 6. FIG. 5 is a diagram showing a state in which the manhole cover 4 and the simple lid 5 are removed from the entrance / exit 6. 4 and 5 are plan views of the entrance / exit 6. FIG. 6 is a diagram showing a cross section taken along the line AA of FIG. FIG. 7 is a diagram showing a cross section taken along the line BB of FIG.

The manhole cover 4 is supported by the support device 14. The support device 14 is provided on the truss 1. The support device 14 may be regarded as a part of the truss 1. The support device 14 includes, for example, an angle 15 and a support bolt 16. 4 and 5 show an example in which the support device 14 includes four angles 15 and twelve support bolts 16. The number of angles 15 and the number of support bolts 16 are not limited to the examples shown in FIGS. 4 and 5.

The angle 15 is a rod-shaped member having an L-shaped cross section. The angle 15 is arranged in a frame shape along the edge of the manhole cover 4, for example. In the following, when the angle 15 is individually specified, it is referred to as an angle 15a to 15d as shown in FIGS. 4 and 5. The angles 15a and 15c are arranged in parallel. The angle 15b and the angle 15d are arranged in parallel.

The support bolt 16 is provided at the angle 15. The support bolt 16 projects upward from the angle 15. As shown in FIG. 6, the manhole cover 4 is placed on and supported by the support bolt 16.

The simple lid 5 is supported by the support device 14. In the example shown in this embodiment, the simple lid 5 has a structure similar to that of a telescopic gate. For example, the simple lid 5 includes a plurality of rod-shaped members 17. The rod-shaped members 17 are arranged side by side in parallel. Further, the simple lid 5 includes a link mechanism 18 for adjusting the spacing between the rod-shaped members 17. The maintenance staff can freely set the width of the simple lid 5 by adjusting the spacing between the rod-shaped members 17.

In the example shown in FIG. 4, the rod-shaped member 17 is arranged along the moving direction C (see FIG. 3) of the step 13. For example, among the rod-shaped members 17, the rod-shaped members arranged on the leftmost side in FIG. 4 are indicated by reference numerals 17a. The rod-shaped member 17a is arranged on the angle 15a and mounted on the angle 15a. As shown in FIG. 6, the rod-shaped member 17a is arranged between the rising portion 19 of the angle 15a and the support bolt 16 provided at the angle 15a. Of the rod-shaped members 17, the rod-shaped members arranged on the far right in FIG. 4 are indicated by reference numerals 17b. The rod-shaped member 17b is arranged on the angle 15c and mounted on the angle 15c. The rod-shaped member 17b is arranged between the rising portion of the angle 15c and the support bolt 16 provided at the angle 15c.

Of the rod-shaped members 17, members other than the rod-shaped members 17a and 17b have one end arranged on the angle 15b and are mounted on the angle 15b. Also, the other end is placed on the angle 15d and placed on the angle 15d.

The escalator is provided with a member for fixing the simple lid 5 to the manhole cover 4. FIG. 7 shows an example in which the member for fixing is a stepped fixing bolt 20. During normal operation on the escalator, the simple lid 5 is fixed to the manhole cover 4 by the fixing bolt 20. The fixing bolt 20 has, for example, a screw portion 20a and a screw portion 20b. The threaded portion 20b is formed on the tip end side of the fixing bolt 20 with respect to the threaded portion 20a. The threaded portion 20a has a diameter larger than the diameter of the threaded portion 20b.

A screw hole 21 is formed in the manhole cover 4. The screw hole 21 is a screw hole for maintenance personnel to use when removing the manhole cover 4. In this embodiment, an example in which two screw holes 21 are formed in the manhole cover 4 is shown. Only one screw hole 21 may be formed in the manhole cover 4. Three or more screw holes 21 may be formed in the manhole cover 4.

A screw hole 22 is formed in the simple lid 5. The screw hole 22 may be formed in the rod-shaped member 17 or may be formed in the link mechanism 18. Another member may be fixed to the rod-shaped member 17 or the link mechanism 18 to form a screw hole 22 in the member. The screw hole 22 has a diameter smaller than the diameter of the screw hole 21. The screw hole 22 is arranged directly below the screw hole 21. The fixing bolt 20 is inserted into the screw hole 21 from above the manhole cover 4. When the simple lid 5 is fixed to the manhole cover 4, the screw portion 20a meshes with the screw hole 21. Further, the screw portion 20b meshes with the screw hole 22.

Next, the work procedure when the maintenance staff of the escalator performs the maintenance work will be described. During normal operation of the escalator, the manhole 2 is closed by the manhole cover 4. Further, the simple lid 5 is arranged below the manhole cover 4 and is fixed to the manhole cover 4 by the fixing bolt 20.

The maintenance staff first removes the fixing bolt 20 from the simple lid 5 and the manhole cover 4. FIG. 8 is a diagram showing a BB cross section in a state where the fixing bolt 20 is removed. When the fixing bolt 20 is removed, the simple lid 5 is separated from the manhole cover 4. If the simple lid 5 is not fixed to the manhole cover 4 by the fixing bolt 20, the entire simple lid 5 is supported by the support device 14. For example, the simple lid 5 is supported by the angle 15. The maintenance worker removes the manhole cover 4 when the fixing bolt 20 is removed. If the fixing bolt 20 is removed, the simple lid 5 remains supported by the support device 14 even if the manhole cover 4 is removed. That is, the manhole 2 is closed by the simple lid 5.

FIG. 9 is a diagram for explaining a procedure for removing the manhole cover 4. When removing the manhole cover 4, a dedicated tool 23 is used. The tool 23 includes a screw portion 23a that meshes with the screw hole 21 formed in the manhole cover 4. FIG. 9 shows a state in which the screw portion 23a is screwed into the screw hole 21 and the tool 23 is attached to the manhole cover 4. FIG. 10 is a diagram showing a BB cross section in a state where the tool 23 is attached. The diameter of the screw portion 23a is larger than the diameter of the screw hole 22 formed in the simple lid 5. Therefore, the screw portion 23a of the tool 23 cannot enter the screw hole 22.

When the maintenance staff attaches the tool 23 to the manhole cover 4, the maintenance worker removes the manhole cover 4 by using the tool 23. As described above, FIG. 4 shows a state in which the manhole cover 4 is removed from the entrance / exit 6. The simple lid 5 is lighter than the manhole cover 4. Therefore, the maintenance staff can easily open and close the manhole 2 with the simple lid 5 during the maintenance work. As shown in FIG. 5, the maintenance worker may completely remove the simple lid 5 to perform the maintenance work.

In the example shown in this embodiment, a large number of openings are formed in the simple lid 5. Therefore, when the manhole cover 4 is removed, the maintenance personnel can see the inside of the manhole 2 even when the simple lid 5 is supported by the support device 14. For example, if the rod-shaped member 17 is arranged along the moving direction C of the step 13 as in the example shown in the present embodiment, the step 13 can be performed from above even when the simple lid 5 is supported by the support device 14. You can check.

Further, in the example shown in the present embodiment, the width of the simple lid 5 can be arbitrarily adjusted. Therefore, when the manhole cover 4 is removed, the maintenance personnel can close only a part of the manhole 2 by the simple lid 5 supported by the support device 14. FIG. 11 is a diagram showing a state in which only the central portion of the manhole 2 is closed with the simple lid 5. For example, a maintenance worker can open the upper part of the electric motor 10 to perform maintenance on the electric motor 10. The maintenance staff can open the upper part of the control panel 12 and connect the maintenance terminal 24 to the control panel 12.

When the maintenance work is completed, the maintenance staff closes the manhole 2 by the reverse procedure of the above. For example, the maintenance staff spreads and arranges the simple lid 5 so that the entire manhole 2 is closed by the simple lid 5. As a result, the screw holes 22 formed in the simple lid 5 are arranged at preset positions.

Next, the maintenance staff arranges the manhole cover 4 above the simple lid 5 and causes the support device 14 to support the manhole cover 4. When the manhole cover 4 is arranged on the simple lid 5, the screw hole 21 is arranged directly above the screw hole 22. When the maintenance staff removes the tool 23 from the screw hole 21, the fixing bolt 20 is screwed into the manhole cover 4 and the simple lid 5. As a result, the screw portion 20a of the fixing bolt 20 meshes with the screw hole 21. Further, the screw portion 20b meshes with the screw hole 22. That is, the simple lid 5 is fixed to the manhole cover 4.

In the example shown in this embodiment, for example, the simple lid 5 is fixed to the manhole cover 4 while the escalator is normally operated. Therefore, the noise generated by the vibration of the simple lid 5 can be suppressed. Even if the escalator is installed in a place where wind easily enters inside the truss 1, noise can be suppressed.

FIG. 12 is a diagram showing another example of the man conveyor according to the first embodiment. FIG. 12 is a diagram corresponding to the BB cross section of FIG. In the example shown in FIG. 12, the fixing bolt 20 has only a screw portion 20b that meshes with the screw hole 22 of the simple lid 5. The fixing bolt 20 does not have a screw portion 20a that meshes with the screw hole 21 of the manhole cover 4.

The diameter of the threaded portion 20b is smaller than the diameter of the screw hole 21. Therefore, the fixing bolt 20 penetrates the screw hole 21 formed in the manhole cover 4. In the fixing bolt 20, the screw portion 20b meshes with the screw hole 22 below the manhole cover 4. In the example shown in FIG. 12, the fixing bolt 20 can be continuously tightened until the simple lid 5 reaches the position indicated by the reference numeral 5', that is, until the simple lid 5 comes into contact with the manhole cover 4. In the example shown in FIG. 12, the simple lid 5 can be firmly fixed to the manhole cover 4 even when the number of screw holes 21 formed in the manhole cover 4 is small.

FIG. 13 is a diagram showing another example of the man conveyor according to the first embodiment. 7 and 12 show an example of fixing the simple lid 5 to the manhole cover 4 by using the screw hole 21 formed in the manhole cover 4. In the example shown in FIG. 13, a through hole 25 for attaching the simple lid 5 is formed in the manhole cover 4. That is, the manhole cover 4 is formed with a through hole 25 in addition to the screw hole 21 for attaching the tool 23.

Further, a screw hole 26 is formed in the simple lid 5. The screw hole 26 has a diameter smaller than the diameter of the through hole 25. The screw hole 26 is arranged directly below the through hole 25. The fixing bolt 20 is inserted into the through hole 25 from above the manhole cover 4. When the simple lid 5 is fixed to the manhole cover 4, the fixing bolt 20 penetrates the through hole 25, and the screw portion 20b meshes with the screw hole 26. The fixing bolt 20 does not have a threaded portion 20a having a diameter larger than that of the threaded portion 20b. Further, it is not necessary to form the screw hole 22 directly below the screw hole 21 of the manhole cover 4 in the simple lid 5. For example, during normal operation of the escalator, a member (not shown) for closing the screw hole 21 is attached to the screw hole 21 of the manhole cover 4.

In this embodiment, an example of an escalator has been specifically described. The example shown in this embodiment may be applied to a moving walkway.

1 truss, 2 manhole, 3 manhole, 4 manhole lid, 5 simple lid, 6 entrance / exit, 7 manhole lid, 8 simple lid, 9 entrance / exit, 10 electric motor, 11 speed reducer, 12 control panel, 13 steps, 14 support device , 15 angle, 16 support bolt, 17 rod-shaped member, 18 link mechanism, 19 riser, 20 fixing bolt, 20a threaded part, 20b threaded part, 21 threaded hole, 22 threaded hole, 23 tool, 23a threaded part, 24 maintenance terminal , 25 through hole, 26 screw hole

Claims (8)

A manhole cover that closes the manhole,
A support device that supports the manhole cover and
A simple lid that is placed below the manhole cover and is lighter than the manhole cover.
A fixing member for fixing the simple lid to the manhole cover,
Equipped with
The simple lid is supported by the support device if it is not fixed to the manhole cover by the fixing member.
The width of the simple lid can be adjusted by expanding and contracting.
When the manhole cover is removed, the simple lid supported by the support device can both close only a part of the manhole and close the whole manhole . A first screw hole is formed in the manhole cover,
A second screw hole having a diameter smaller than the diameter of the first screw hole is formed in the simple lid.
The man conveyor according to claim 1, wherein the fixing member has a screw portion, penetrates the first screw hole, and the screw portion meshes with the second screw hole. A first screw hole is formed in the manhole cover,
A second screw hole having a diameter smaller than the diameter of the first screw hole is formed in the simple lid.
The man conveyor according to claim 1, wherein the fixing member has a first screw portion that meshes with the first screw hole and a second screw portion that meshes with the second screw hole. A through hole is formed in the manhole cover,
A screw hole having a diameter smaller than the diameter of the through hole is formed in the simple lid.
The man conveyor according to claim 1, wherein the fixing member has a screw portion, penetrates the through hole, and the screw portion meshes with the screw hole. The support device is
An angle arranged along the edge of the manhole cover,
Support bolts protruding from the angle and
Equipped with
The manhole cover is placed on the support bolt and
The manhole conveyor according to any one of claims 1 to 4, wherein the simple lid is supported by the angle if it is not fixed to the manhole cover by the fixing member. The manhole according to any one of claims 1 to 5, wherein when the manhole cover is removed, the inside of the manhole can be visually recognized with the simple lid supported by the support device. The simple lid is
Multiple rod-shaped members arranged side by side,
A link mechanism for adjusting the spacing between the rod-shaped members, and
Equipped with
The man conveyor according to claim 6, wherein the rod-shaped member is arranged along the moving direction of the step for a person to ride. The manhole according to any one of claims 1 to 7, wherein the simple lid is fixed to the manhole cover by the fixing member in a state of being expanded so as to close the entire manhole.

Images