JP7028697B2 - Tunnel door - Google Patents

Description

The present invention relates to a tunnel door installed at the entrance and exit of a tunnel.

For example, in an automobile tunnel, an evacuation tunnel is provided on the side wall of the main pit of the tunnel so as to be substantially orthogonal to the main pit in order to evacuate in the event of an accident or other obstacle. Is provided with a door. Evacuation doors are normally closed and can be opened to evacuate to an evacuation tunnel in an emergency.

The evacuation tunnel does not need to be so large just for people to enter and exit, but it is necessary to secure a large entrance and exit when, for example, vehicles performing restoration work or maintenance work enter or exit. In general, the cross section of a tunnel is circular or elliptical, whereas the door is often rectangular. In addition, the opening direction is often opened into the evacuation tunnel, and when the door is opened to a right angle, a space corresponding to the shape of the door is required on the inner wall of the tunnel. Therefore, the opening can be secured only up to the rectangular shape inscribed in the cross-sectional shape of the tunnel.

In order to secure a large opening as much as possible, the inner wall of the evacuation tunnel has been partially shaved so that it can be accommodated in the shaved part when the door is opened to secure the height. FIG. 10 is an explanatory diagram of an example of a conventional tunnel door. 10 (A) is a front view, and FIG. 10 (B) is a plan view. In the figure, 91 is a parent door, 92 is a child door, and 93 is a submerged door. The example shown in FIG. 10 shows a disaster prevention door of an evacuation tunnel described in Patent Document 1. A parent-child opening door including a parent door 91 and a child door 92 is provided at the opening of the tunnel, and the parent door 92 is provided with a humanitarian submarine door 93.

The upper part of the main door 91 and the child door 92 on the door tail side, which is shown by a circle in FIG. 10A, protrudes from the opening of the tunnel. It is possible to secure a wide opening width and opening height by this amount. However, if it is left as it is, when the main door 91 and the child door 92 are opened, the upper portions of the main door 91 and the child door 92 come into contact with the wall surface of the tunnel and cannot be opened. Therefore, as shown by a two-dot chain line as a cut portion in FIG. 10B, the wall surface of the tunnel is shaved in the direction toward the back of the tunnel so that the main door 91 and the child door 92 can be opened.

Further, in the example of the tunnel door described in Patent Document 2, a hinged door and a shutter-shaped overhead door that opens and closes up and down are combined, and the hinged door is provided with a dive door. Even in this configuration, in order to secure the opening as large as possible, the upper part of the hinged door on the door tail side protrudes from the tunnel opening, and it is still necessary to scrape the wall surface of the tunnel.

As described above, in the case of the conventional tunnel door, it is necessary to cut the wall surface of the tunnel in order to secure the opening as large as possible. Further, if the amount of scraping the wall surface is increased too much to secure a large opening, there is a concern that the strength of the tunnel will decrease. Therefore, there is a limit to securing a large opening.

Japanese Unexamined Patent Publication No. 2002-138774 Japanese Unexamined Patent Publication No. 2004-250971

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a tunnel door capable of ensuring a wide opening without scraping the wall surface of the tunnel.

The invention according to claim 1 of the present application has a door body whose height is equal to or less than the height to the inner wall of the tunnel at the door tail position, and a closing plate provided on the door body and closing the upper space of the door body. The closing plate is a tunnel door having a height equal to or lower than the height to the inner wall of the tunnel at the door tail position of the door body when the door body is opened.

The invention according to claim 2 of the present application is the invention according to claim 1, wherein the closing plate is slidable up and down, and the door is raised by raising the closing plate while the door body is closed. It is a tunnel door characterized by closing the opening at the top of the main body.

The invention according to claim 3 of the present application is a tunnel door characterized in that the configuration of the invention according to claim 2 of the present application further includes an operating means for sliding the closing plate up and down.

The invention according to claim 4 of the present application further comprises a holding means for holding the closing plate at an upper limit position in the configuration of the invention according to any one of claims 1 to 3 of the present application. It is a characteristic tunnel door.

The invention according to claim 5 of the present application is for a tunnel, wherein the closing plate in the invention according to any one of claims 1 to 4 of the present application is provided with a plurality of through holes. It is a door.

The invention according to claim 6 of the present application has the configuration of the invention according to any one of claims 1 to 5 of the present application, and further, the height of the closing plate to the inner wall of the tunnel at the door tail position of the door body. It is a tunnel door characterized by having a locking means that enables the door body to be opened by making the door body less than or equal to the value.

According to the present invention, although the height of the door body is equal to or less than the height at which the upper part abuts on the inner wall of the tunnel in a state of being open into the tunnel, the upper part is closed by a closing plate, and this closing plate is used as the door body. Similarly, if the closing plate is opened together with the door body so that it is below the height that abuts on the inner wall of the tunnel, a wide opening including not only the size of the door body but also the size of the closing plate can be obtained. Such a wide opening can be closed by the door body and the closing plate. In addition, even when the door body is opened, the height is only in contact with the inner wall of the tunnel, so there is no need to scrape the wall surface of the tunnel, which simplifies the construction work and does not impair the strength of the tunnel. Further, since the door body is opened and closed with the closing plate open, the wind can be released from the open portion of the closing plate even when the door body is under wind pressure, and the door body can be opened and closed with a light force.

Further, by providing the door main body with the operating means so as to slide the closing plate up and down, the closing plate can be easily attached and stored, and the operability can be improved. If it is configured to be held by the holding means at the upper limit position of the closing plate, the upper space of the door body can be closed more reliably and stably by the closing plate, and the operability can be improved. Further, when the closing plate is set to a height equal to or lower than the tunnel inner wall at the door end position of the door body, the door body can be opened, so that an erroneous operation such as abutting the closing plate on the upper part of the tunnel can be prevented.

Furthermore, by providing multiple through holes in the closing plate, the wind pressure received by the wind passing through the tunnel can be reduced and ventilation can be ensured, and the closing plate can be made lighter and operated with a light force. Can be done.

It is a front view which shows one Embodiment of this invention. It is a top view which shows one Embodiment of this invention. It is explanatory drawing at the time of opening the door in one Embodiment of this invention. It is explanatory drawing of the specific example of a closing plate. It is an enlarged view of an example of a closing plate and a guide rail. It is sectional drawing of the main part of an example of a closing plate and a guide rail. It is explanatory drawing of an example of a locking means. It is a schematic block diagram which shows the modification of one Embodiment of this invention. It is a schematic block diagram which shows another modification of one embodiment of this invention. It is explanatory drawing of an example of a conventional tunnel door.

1 is a front view showing an embodiment of the present invention, FIG. 2 is a plan view, and FIG. 3 is an explanatory view when the door is opened. In the figure, 11 and 12 are door bodies, 13 and 14 are closing plates, 15 are through holes, 16 is a dive door, 17 is a window, 21 is a guide rail, 22 is an operation wire, and 23 is a fastener. Further, the arc-shaped shape at the upper part in the figure is the opening shape of the tunnel, which is the wall surface of the tunnel. The tunnel is large enough for construction vehicles to pass through. In this example, a double door is shown, and the door main body 11 and the door main body 12 are provided.

The door bodies 11 and 12 are provided to close or partition the opening of the tunnel, and are rotatably attached to a support provided near the opening end of the tunnel by a hinge or the like. The height is equal to or less than the height from the floor surface to the inner wall of the tunnel at the door tail position. At this height, as shown by the broken line in FIG. 2, even if the door bodies 11 and 12 are rotated by approximately 90 degrees in the tunnel to be opened, the upper portion abuts on the inner wall of the tunnel or less. Therefore, the door bodies 11 and 12 can be opened wide without any work such as scraping the inner wall of the tunnel.

In the case of a tunnel for vehicle passage as described above, it is advisable to provide a dive door 16 for humanitarian purposes. In this example, an example in which the dive door 16 is provided in the door main body 11 is shown. Of course, it may be provided on the door body 12 side, or it may be configured not to provide a dive door. Further, in this example, a window 17 is provided on the door main body 12 so that the opposite side of the door main bodies 11 and 12 can be checked. The window 17 may not be provided.

The door bodies 11 and 12 are provided with closing plates 13 and 14 for closing the space above the door bodies 11 and 12. The closing plates 13 and 14 are configured so as to be equal to or less than the height from the floor surface to the inner wall of the tunnel at the door tail position of the door bodies 11 and 12 when the door bodies 11 and 12 are opened. FIG. 3A shows an example in which the closing plates 13 and 14 are set to the height of the door bodies 11 and 12 or less. By setting the closing plates 13 and 14 to the height of the door bodies 11 and 12, the closing plates 13 and 14 open together with the door bodies 11 and 12 when the door bodies 11 and 12 are opened, and the closing plates 13 and 14 are also tunneled. The door will be opened without touching the ceiling. Further, even when the wind pressure is applied by the wind blowing through the tunnel, if the closing plates 13 and 14 are set to the height of the door bodies 11 and 12 or less, the wind can be released by the opening at the upper part. Therefore, if the closing plates 13 and 14 are opened when the door bodies 11 and 12 are opened and closed, the opening and closing can be performed with a light force even under wind pressure.

FIG. 3B shows a state in which the door bodies 11 and 12 are opened together with the closing plates 13 and 14. The portion blocked by the door bodies 11 and 12 and the portion blocked by the closing plates 13 and 14 appear as an opening serving as a passage. Therefore, it is possible to obtain a wide opening in both width and height as compared with the case where only the door is installed without cutting the inner wall of the tunnel.

Of the tunnel openings, the spaces that cannot be closed by the door bodies 11 and 12 and the closing plates 13 and 14 are closed by the siding, and this portion cannot be opened.

As an example of the closing plates 13 and 14, here, an example in which the closing plates 13 and 14 are configured to be slidable up and down is shown. As shown in FIG. 3A, when the closing plates 13 and 14 are raised with the door bodies 11 and 12 closed, the closing plates 13 and 14 protrude above the upper ends of the door bodies 11 and 12 to the upper limit position. As shown in FIG. 1, the closing plates 13 and 14 close the upper openings of the door bodies 11 and 12 in the fully raised state. When the closing plates 13 and 14 are raised to the upper limit position, the closing plates 13 and 14 may be held at that position.

Further, by lowering the closing plates 13 and 14 from the state where the closing plates 13 and 14 shown in FIG. 1 are in the upper limit positions, the closing plates 13 and 14 are the door bodies 11 and as shown in FIG. 3 (A). It is housed in the surface of 12, and the upper ends of the closing plates 13 and 14 are equal to or less than the height from the floor surface to the inner wall of the tunnel at the door tail position of the door bodies 11 and 12. In this example, with the closing plates 13 and 14 lowered, the upper ends of the closing plates 13 and 14 are configured to be at or below the upper ends of the door bodies 11 and 12. Of course, even if the upper ends of the closing plates 13 and 14 protrude from the upper ends of the door bodies 11 and 12 with the closing plates 13 and 14 lowered, the height of the tunnel is at the position of the door tail of the door bodies 11 and 12. It may be less than or equal to the height of the inner wall.

The shapes of the closing plates 13 and 14 show an example in which one corner of the rectangle is cut according to the shape of the tunnel in this example. Of course, the shape of the closing plates 13 and 14 may be determined according to the opening shape, such as matching the shape of the upper ends of the closing plates 13 and 14 with the shape of the inner wall of the tunnel.

The closing plates 13 and 14 in this example are provided with a plurality of through holes 15. With the through hole 15, even when the space above the door bodies 11 and 12 is closed by the closing plates 13 and 14, the wind pressure received by the wind passing through the tunnel can be reduced and the air permeability in the tunnel can be ensured. Further, the closing plates 13 and 14 are reduced in weight and can be operated with a light force. Of course, it may be configured without providing the through hole 15. Further, the through hole 15 may be configured to be openable and closable so that it can be closed so that smoke does not enter in an emergency.

Guide rails 21 are provided on the door bodies 11 and 12 as a configuration for sliding the closing plates 13 and 14 up and down. The closing plates 13 and 14 slide up and down along the guide rail 21. The vertical movement of the closing plates 13 and 14 can be performed by the operating wire 22 in this example. For example, the closing plates 13 and 14 can be raised by pulling the operation wire 22 while the closing plates 13 and 14 are lowered. After raising the closing plates 13 and 14 to the upper limit position, the closing plates 13 and 14 can hold the upper limit position by locking the operation wire 22 to the fastener 23. Further, by removing the operation wire 22 from the fastener 23 and loosening it while the closing plates 13 and 14 are in the upper limit positions, the closing plates 13 and 14 are lowered by their own weight. The closing plates 13 and 14 stop when they reach the lower limit position. Of course, the means for sliding the closing plates 13 and 14 up and down is not limited to the method using the operation wire 22, and various known methods may be adopted. Needless to say, various known configurations may be applied to the mechanism for holding the closing plates 13 and 14 at the upper limit position.

FIG. 4 is an explanatory view of a specific example of the closing plate, FIG. 5 is an enlarged view of an example of the closing plate and the guide rail, and FIG. 6 is a cross-sectional view of a main part. In the figure, 31 is a panel part, 32 is a side frame part, 33 is a lower frame part, 34 is a door removal part, 35, 36, 37 are rollers, 38 is a wire fixing part, 41 is a pulley, and 42 is a wire grip part. be. The closing plates 13 and 14 are composed of a panel portion 31 having a size that closes the upper space of the door bodies 11 and 12, and a frame body that surrounds the panel portion 31. The panel portion 31 is provided with a plurality of through holes 15 as described above.

The side frame portion 32 of the frame body extends below the lower end of the panel portion 31. The side frame portion 32 is fitted with the guide rails 21 of the door bodies 11 and 12, and slides along the guide rails 21 when the closing plates 13 and 14 move up and down. The side frame portion 32 has at least a length that allows the closing plates 13 and 14 to be guided without being disengaged from the guide rail 21 even when the closing plates 13 and 14 are raised to the upper limit position. Of course, if the closing plates 13 and 14 can be guided to the upper limit position, the side frame portion 32 does not have to be extended. However, since the side frame portion 32 extends to the lower part of the panel portion 31, the stability when sliding up and down can be improved. Further, the resistance of the closing plates 13 and 14 when subjected to wind pressure is improved, and the rigidity of the closing plates 13 and 14 itself can be improved.

A lower frame portion 33 is provided below the stretched side frame portion 32. The lower frame portion 33 supports between the side frame portions 32. The closing plate 13 is provided with a door removing portion 34 from which a part of the lower frame portion 33 is removed so that the lower frame portion 33 does not interfere with the opening and closing of the dive door 16 and the entry and exit of people when the lower frame portion 33 is lowered.

5 and 6 show, as an example, the configuration of the side frame portion 32 of the closing plate 14 and the configuration of the guide rail 21 provided on the door body 12. The structure of the closing plate 13 and the door body 11 also has a structure in which the left and right sides are substantially interchanged. Although not shown in FIG. 4, rollers 35, 36, and 37 are provided on the side frame portion 32 of the closing plate 14 in order to stabilize the vertical sliding as shown in FIGS. 5 and 6. .. 6 (A) is a cross-sectional view taken along the line aa'in FIG. 5, FIG. 6 (B) is a cross-sectional view taken along the line bb' in FIG. 5, and FIG. 6 (C) is a cross-sectional view taken along the line cc' in FIG. FIG. 6D is a cross-sectional view taken along the line dd'in FIG. In FIG. 5, only one of the left and right is shown, but in FIG. 6, both the left and right sides are shown. The roller 36 prevents the closing plate 14 from shifting to the left or right. Further, the rollers 35 and 37 prevent the closing plate 14 from shifting back and forth, respectively. Further, two sets of these rollers 35, 36, and 37 are provided on the left and right side frame portions 32 so that the closing plate 14 can move up and down stably. Of course, these rollers may be provided as needed, and are not limited to this example.

A wire fixing portion 38 is provided at the lower portion of the side frame portion 32, and one end of the operation wire 22 is fixed to the wire fixing portion 38. The operation wire 22 is hung on a pulley 41 provided on the door body 12 side. In this example, a wire grip portion 42 is provided at the other end of the operation wire 22, and by gripping and pulling the wire grip portion 42, a tensile force is transmitted to the wire fixing portion 38 via the pulley 41 and the wire is closed. The board 14 will rise. When raising the closing plate 14, the rollers 35, 36, 37 rotate along the surface of the guide rail 21 so that the closing plate 14 can be raised smoothly. After raising the closing plate 14, the wire grip portion 42 may be hooked on the fastener 23 to maintain the closing plate 14 in the raised state. Further, if the wire grip portion 42 is removed from the fastener 23 and gradually loosened, the closing plate 14 will be lowered by its own weight. At that time, the rollers 35, 36, and 37 can rotate along the surface of the guide rail 21 and can be smoothly lowered. In order to prevent a sudden descent, the pulley 41 may be provided with a slow descent device.

In this example, the operation wire 22 is hung only on one side of the side frame portion 32, but the operation wire 22 is also hung on the other side, and the two wires are evenly pulled so as to be lifted from both sides. It is also good. Of course, it goes without saying that it may be moved up and down electrically.

As described above, if the closing plates 13 and 14 are lowered to the lower limit position and the door bodies 11 and 12 are opened, the door bodies 11 and 12 can be opened wide and a wide opening can be obtained. However, when the door bodies 11 and 12 are opened without fully or at all lowering the closing plates 13 and 14, the upper part of the closing plates 13 and 14 is the inner wall of the tunnel when the door bodies 11 and 12 are opened to some extent. It will come into contact with the door and cannot be opened any further. In order to prevent such an operation error, it is preferable to provide a locking means that allows the door bodies 11 and 12 to be opened when the closing plates 13 and 14 are lowered.

FIG. 7 is an explanatory diagram of an example of the locking means. In the figure, 51 is a handle, 52 is a thumb turn, 53 is a protrusion, and 54 is an unlocking bar. In this example, an example is shown in which the door body 11 is provided with a handle 51 for opening the door body 11. A thumb turn 52 for locking the handle 51 is provided on the upper portion of the handle 51. The thumb turn 52 is provided with a protrusion 53. When the protrusion 53 is in the horizontal direction, the handle 51 is locked and rotated downward so that the handle 51 can be rotated so that the door body 11 can be opened. On the other hand, the unlocking bar 54 is provided on the lower frame portion 33 of the closing plate 13.

In the state where the closing plate 13 is raised, the protrusion 53 of the thumb turn 52 is in the horizontal direction. In this state, the handle 51 is locked and the door body 11 cannot be opened. When the operation wire 22 is loosened to lower the closing plate 13 and the closing plate 13 is fully lowered as shown in FIG. 7, the unlocking bar 54 provided on the lower frame portion 33 of the closing plate 13 becomes the protrusion 53 of the thumb turn 52. And rotate the protrusion 53. As a result, the lock of the handle 51 is released, and the door body 11 can be opened by turning the handle 51. As described above, since the door body 11 cannot be opened unless the closing plate 13 is lowered, erroneous operation can be prevented. When the door body 11 is closed and the closing plate 13 is raised, the protrusion 53 of the thumb turn 52 returns to the horizontal state, and the handle 51 is locked again.

Although the door main body 11 side is shown here, the same locking means may be provided on the door main body 12 side. Although an example in which a thumb turn is used as the locking means is shown here, the locking means is not limited to this example, and various configurations may be applied. For example, a configuration is conceivable in which the fastener 23 of the operation wire 22 is used as a locking means, and the door bodies 11 and 12 are locked so as not to open while the operation wire 22 is fastened to the fastener 23.

FIG. 8 is a schematic configuration diagram showing a modified example of the embodiment of the present invention. In the figure, 61 is a grip portion, 62 is a notch portion, and 63 is a holding portion. In the modified example shown in FIG. 8, an example of a single door is shown, and the door main body 12 and the closing plate 14 are used. Needless to say, the above-mentioned configuration may be one-sided opening, or the configuration shown in FIG. 8 may be applied to both-sided opening.

This modification shows an example in which the guide rail 21 is provided inside the door body 12. Further, the closing plate 14 is configured without providing the lower frame portion 33. Even in this case, the side frame portion 32 may maintain its strength. Further, in this modification, the grip portion 61 is provided instead of the operation wire 22 as a configuration for moving the closing plate 14 up and down. The grip portion 61 is provided in the side frame portion 32 of the closing plate 14, and protrudes to the outside through the notch portion 62 provided in the door body 12. The closing plate 14 can be raised by gripping and lifting the grip portion 61, and lowered by lowering the grip portion 61.

The door body 12 is provided with a holding portion 63 that holds the closing plate 14 when it is raised to the upper limit position. In this example, when the closing plate 14 is raised to the upper limit position, the holding portion 63 protrudes from the lower part of the side frame portion 32 to hold the closing plate 14. When lowering the closing plate 14, the grip portion 61 may be gripped to release the holding portion 63. When the closing plate 14 is lowered to the lower limit position, the closing plate 14 is housed in the door main body 12, and the upper end thereof is equal to or lower than the height from the floor surface to the inner wall of the tunnel at the door tail position of the door main body 12. As a result, even if the door body 12 is opened, the closing plate 14 does not come into contact with the inner wall of the tunnel, and the door can be opened widely.

FIG. 9 is a schematic configuration diagram showing another modification of the embodiment of the present invention. In the figure, 71 is a hinge and 72 is a hook. In each of the above examples, examples of sliding the closing plates 13 and 14 up and down are shown, but the present invention is not limited to this. In the example shown in FIG. 9, a hinge 71 of the closing plate 14 is provided on the upper side of the door body 12, and the closing plate 14 rotates around the hinge 71 as a rotation axis.

An operation wire 22 is provided on the closing plate 14, and by pulling the operation wire 22 in a state where the closing plate 14 is closed, the closing plate 14 rotates and opens around the hinge 71 as a rotation axis, and the closing plate 14 is opened. 14 is in the state shown by the broken line. As a result, the closing plate 14 is housed in the surface of the door body 12, and both the door body 12 and the closing plate 14 are at or below the height from the floor surface to the inner wall of the tunnel at the door tail position of the door body 12. As a result, even if the door body 12 is opened, the closing plate 14 does not come into contact with the inner wall of the tunnel, and the door can be opened widely. When closing the closing plate 14 after closing the door body 12, a rod-shaped jig is hooked on the hook 72 provided on the closing plate 14, and the closing plate 14 is rotated so as to be lifted so that the closing plate 14 is closed. You just have to restore it.

Also in this example, even if a configuration is provided in which the door body 12 cannot be opened unless the closing plate 14 is opened, or a configuration is provided in which the closing plate 14 is maintained in the closed state when the closing plate 14 is returned to the closed state. good. Further, the configuration for opening the closing plate 14 and the configuration for closing are not limited to the above-mentioned examples, and various known methods may be applied. Further, the rotation axis of the closing plate 14 is not limited to the hinge 71.

Although one embodiment of the present invention and examples thereof have been described above, the present invention is not limited to these and can be appropriately modified without departing from the spirit of the present invention.

11, 12 ... Door body, 13, 14 ... Closing plate, 15 ... Through hole, 16 ... Dive door, 17 ... Window, 21 ... Guide rail, 22 ... Operation wire, 23 ... Fastener, 31 ... Panel part, 32 ... Side Frame part, 33 ... Lower frame part, 34 ... Door removal part, 35, 36, 37 ... Roller, 38 ... Wire fixing part, 41 ... Slider, 42 ... Wire gripping part, 51 ... Handle, 52 ... Thumb turn, 53 ... Projection Part, 54 ... Unlocking bar, 61 ... Grip part, 62 ... Notch part, 63 ... Holding part, 71 ... Hinge, 72 ... Hook, 91 ... Parent door, 92 ... Child door, 93 ... Dive door.

Claims (6)

It has a door body whose height is equal to or less than the height to the inner wall of the tunnel at the door tail position, and a closing plate provided on the door body to close the upper space of the door body. A tunnel door characterized in that when the door is opened, the height is equal to or less than the height to the inner wall of the tunnel at the door end position of the door body. The tunnel according to claim 1, wherein the closing plate is slidable up and down, and the opening of the upper part of the door body is closed by raising the closing plate in a state where the door body is closed. door. The tunnel door according to claim 2, further comprising an operating means for sliding the closing plate up and down. The tunnel door according to any one of claims 1 to 3, further comprising a holding means for holding the closing plate at an upper limit position. The tunnel door according to any one of claims 1 to 4, wherein the closing plate is provided with a plurality of through holes. One of claims 1 to 5, wherein the closing plate has a locking means that enables the door body to be opened by setting the closing plate to a height equal to or lower than the height of the inner wall of the tunnel at the door tail position of the door body. The tunnel door described in item 1.

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