JP2022118251A - Hydrant facility in tunnel and hydrant device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to easily and simply deal with a hydrant device on a road side and an observer passage side and to make it possible to draw a hose smoothly.

SOLUTION: A hydrant storage box 30 serving as a housing 28 for a hydrant device is buried and installed in an observer passage 14 along a tunnel wall surface and stores a hose with a foam nozzle inside. The housing 28 is provided with a front door 32, a first upper door 36 and a second upper door 38 as an upper door, and the second upper door 38 is arranged at a door opening of the first upper door 36. When operated on the road side 15, engagement of the front door 32 is released and opened by front opening of the second upper door 38, and the hose with the foam nozzle is taken out from a front surface hose take-out port divided by the first hose guide 60. When operated on the road side of the observer passage 14, the second upper door 38 is opened backward, and the hose with the foam nozzle is taken out from an upper surface hose take-out port divided by the second hose guide 80.

SELECTED DRAWING: Figure 2

COPYRIGHT: (C)2022,JPO&INPIT

Description

TECHNICAL FIELD The present invention relates to an in-tunnel fire hydrant device that discharges fire-extinguishing water or fire-extinguishing foam by pulling out a hose with a nozzle housed inside a housing, and to an in-tunnel fire hydrant facility in which the fire hydrant device is installed.

Conventionally, a fire hydrant system is provided as emergency equipment for tunnels installed in tunnels such as highways and motorways. The fire hydrant system has a fire hydrant door that can be opened freely, and consists of a hose with a nozzle attached to the tip and a fire hydrant valve. Contains valves including

Fire hydrants are generally embedded in the tunnel wall at intervals of, for example, 50 meters along the tunnel sidewall. In the event of a vehicle accident involving a fire, in a tunnel with an observer passage, road users such as the driver of the vehicle involved in the accident must climb the steps installed on the side of the observer passage and enter the tunnel. A fire hydrant door of a fire hydrant device installed on a wall surface is opened forward and a hose with a nozzle is taken out to perform fire extinguishing work.

The guard passage is provided as a side wall passage that is elevated from the road surface, making it possible to safely inspect various equipment, including the fire hydrant system installed inside the tunnel, without interfering with vehicle traffic inside the tunnel. .

In addition, in a tunnel without a passage for observers, users such as the driver of the accident vehicle should approach the fire hydrant device installed on the tunnel wall, open the fire hydrant door forward and open the hose with the nozzle. are taken out to extinguish the fire.

JP 2006-181057 A JP 2008-055024 A JP 2009-285126 A

By the way, in urban tunnels made by the shield construction method, etc., the fire hydrant system cannot be installed embedded in the tunnel wall, and it is necessary to embed the fire hydrant system on the side (wall surface) of the passageway for observers.

However, when a fire hydrant device with a door that opens forward like a conventional fire hydrant is installed in the passageway for guards, there is a problem that when the fire hydrant door opens, the fire hydrant exceeds the construction gauge and jumps out onto the road side.

On the other hand, even if this problem could be solved, if the fire hydrant system were embedded along the wall of the guard passage facing the road in the tunnel, if a vehicle fire occurred and the vehicle stopped in front of the fire hydrant door, A stopped vehicle may be in the way of opening the fire hydrant door and pulling out the hose. Furthermore, even if the fire hydrant door can be operated from the guard's passage, it is necessary to bend down and extend the hand to open the fire hydrant door from the guard's passage, and it may take time to operate the fire hydrant device.

In addition, when pulling out the hose from the fire hydrant device, it is necessary to reduce wear and pulling force due to rubbing of the hose.

The present invention provides an in-tunnel fire hydrant device that enables simple and easy handling of the fire hydrant from the road side and the pavement side of the guard passage and enables smooth hose withdrawal, and a tunnel fire hydrant equipped with the fire hydrant device. The purpose is to provide facilities.

(fire hydrant equipment in the tunnel)
In the present invention, a fire hydrant device in which a fire-extinguishing hose is housed is embedded in a guard passage along the wall of a tunnel with the front portion facing the road and the upper portion facing the road surface of the guard passage. A fire hydrant facility in a tunnel installed,
Fire hydrant equipment
a front opening formed in the front;
an upper opening formed in the upper portion;
a first hose guide that guides the hose downward when the hose is drawn downward from the front opening toward the road side;
a second hose guide that laterally guides the hose when the hose is pulled out laterally from the upper opening on the road surface side of the guard passage;
with
The second hose guide is located on the upper opening side, and when viewed downward from the upper opening, the character bottom is located on the back side of the fire hydrant device, and the character top is located on the front opening side. The hose can be pulled out from the space below the upper guide portion to the space above the upper opening via the inside of the convex shape of the upper guide portion, and
The first hose guide has a lower guide portion disposed on the front opening side so as to form a U shape with the top portion positioned on the upper opening side when viewed rearward from the front opening, The hose can be pulled out from the rear space of the lower guide portion to the front external space of the front opening via the lower side of the second hose guide and the inner side of the U shape of the lower guide portion. do.

(fire hydrant device in tunnel)
The present invention is a tunnel in which a fire extinguishing hose is stored inside and is embedded in a guard passage along the tunnel wall surface with the front part facing the road side and the upper part facing the road surface side of the guard passage. An internal fire hydrant device,
a front opening formed in the front part facing the road in the installed state;
an upper opening formed in the upper part that is on the road surface side of the guard passage in the installed state;
a first hose guide that guides the lower side of the hose when the hose is pulled out from the front opening to the outside downward on the road side;
a second hose guide that guides the hose laterally when the hose is pulled out laterally from the upper opening on the road surface side of the guard passage;
with
The second hose guide is located on the upper opening side, and when viewed downward from the upper opening, the character bottom is located on the back side of the fire hydrant device, and the character top is located on the front opening side. The hose can be pulled out from the space below the upper guide portion to the space above the upper opening via the inside of the convex shape of the upper guide portion, and
The first hose guide has a lower guide portion disposed on the front opening side so as to form a U shape with the top portion positioned on the upper opening side when viewed rearward from the front opening, The hose can be pulled out from the rear space of the lower guide portion to the front external space of the front opening via the lower side of the second hose guide and the inner side of the U shape of the lower guide portion. do.

(basic effect)
The present invention relates to an in-tunnel fire hydrant system in which a housing of a fire hydrant device in which a hose with a nozzle is housed inside the housing is embedded in a guard passage along the tunnel wall surface, wherein the fire hydrant device is mounted on a road. In the front door opening formed on the front side of the housing that is the side, the front door that is arranged to be opened and closed freely, and the top door opening formed on the top surface of the housing that is the road side of the guard passage, from the road side The upper door is arranged so that it can be opened forward by rotating toward the tunnel wall surface side and opened rearwardly by rotating toward the road side from the tunnel wall surface side, and the inside side of the housing of the front door opening. 2, a first hose guide arranged to partition the front hose outlet for pulling out the hose to the road side, and a hose inside the housing of the top door opening for pulling out the hose to the road side of the observer passage. and a second hose guide arranged to partition the upper hose outlet, and as a specific configuration of the upper door, the upper door is pivotally supported in the upper door opening so as to freely open rearward about the front edge of the housing. A first upper door and a door opening formed in the first upper door are pivotally supported so that the door can be freely opened forward with the rear edge portion of the door on the side of the tunnel wall surface as an axis, and the rear is integrated with the first upper door. When a fire occurs due to a vehicle accident in the tunnel, when the user operates from the road side, the front door facing the road is opened and the upper door is opened to the tunnel. The front door opening and top door opening of the housing are opened toward the wall side, and the nozzle with a smooth housing is guided by the first hose guide arranged to partition the front hose outlet. The hose can be pulled out simply and easily to extinguish the fire.

In addition, when the vehicle stops in front of the housing and the user cannot operate from the road side, the user climbs up the guard passage, opens the upper door to the road side, and then opens the housing. The upper door opening of the body is opened, and the hose with a nozzle can be smoothly and easily removed from the housing while being guided by the second hose guide arranged so as to separate the upper hose outlet without being obstructed by the stopped vehicle. Can be pulled out to extinguish the fire.

In addition, since it functions as a fence when the upper door is opened from the rear, the user can avoid the danger of falling onto the road side when pulling out the nozzle-equipped hose from the upper door opening of the housing. It is also possible to prevent the removed nozzle from dropping on the road side.

In addition, since the first hose guide and the second hose guide are provided inside the housing, the housing is reinforced, and the strength of the housing can be increased.

Further, since the first hose guide and the second hose guide are exposed so as to partition the hose outlet when the door is opened, parts unnecessary for operation are hidden from the operator, and operability can be improved.

(Effect of hose guide structure)
In addition, the first hose guide has a pipe member arranged along the lower side from the left and right sides of the front door opening, and the central portion of the pipe member arranged on the lower side curves toward the inside of the housing. The second hose guide is arranged in a substantially rectangular loop shape long in the left-right direction on the rear side of the tunnel wall surface side of the upper door opening, and the pipe member arranged in the substantially rectangular loop shape is arranged in the second hose guide. Since the central part of the front side, which is the road side, is cut off and bent forward, the hose that is pulled out to the road side or the road surface side of the guard passage is attached to the pipe member that constitutes the first hose guide or the second hose guide. Since the hose is pulled out in sliding contact with each other, the frictional resistance is small, which reduces the wear of the hose and reduces the hose pull-out force.

In addition, the pipe member that constitutes the first hose guide is arranged from both the left and right sides when the direction along the lane of the road in the installed state of the front door opening is taken as the left and right direction, and the lower side that becomes the road surface side in the installed state. Since the hose is arranged along the , it is possible to reliably prevent the sliding contact of the hose with the left and right sides and the lower edge portion of the front door opening.

In addition, the housing is provided with a hose guide structure in which at least two pipe members are erected from the curved portion of the first hose guide to the hose storage portion on the lower side of the housing, and the hose is horizontal to the installation surface. Since the hose is stored in the hose storage part while being curved inwardly by the hose guide structure, the hose stored in the hose storage part horizontally inwardly with respect to the installation surface is made of two pipe members. Part of the hose is curved inside the housing to form a roughly gourd shape, and the reaction force of this curved shape prevents the hose from collapsing when it is wound in layers. Acts as a force and reduces hose pull-out force.

(Effect of nameplate arrangement)
In addition, on the back surface of the second upper door, which is the inner side of the housing, a first operation nameplate that is visible when the second upper door is opened is arranged, and is attached to the second hose guide, Since the second operation nameplate is arranged to be visible and exposed when the first upper door integrated with the second upper door is opened rearward, the front door and the second upper door are opened when operating from the road side. Then, the first operation nameplate on the back of the second upper door that opens forward appears in front of the user, and even a user who is unfamiliar with the operation can follow the operation method shown on the first operation nameplate. To remove a nozzle, pull out a hose, then operate an operation lever to an open position, and finally perform an operation of discharging water with the nozzle.

In addition, when operating from the road surface side of the observer passage, if the first upper door is rearwardly opened integrally with the second upper door, the second hose guide provided inside the upper door opening of the housing Then, the second operation nameplate is horizontally arranged, and while looking at this, remove the nozzle, pull out the hose, then operate the operation lever to the open position, and finally perform the operation of discharging water with the nozzle. enable

In addition, when the first upper door is rear-opened integrally with the second upper door in order to be operated from the road surface side of the observer passage, the first operation nameplate arranged on the back surface of the rear-opened second upper door is also Although it is exposed, the first operation nameplate is upside down and is located on the back of the second upper door that is open in a nearly vertical state, so it is very difficult for users on the guard passage to see it. Therefore, it is possible to operate while looking at the easily visible second operation nameplate without being distracted by the first operation nameplate.

Since the effects of the in-tunnel fire hydrant system of the present invention are the same as those of the above-described in-tunnel fire hydrant system, the description thereof will be omitted.

Explanatory drawing showing tunnel emergency equipment including a fire hydrant installed in a tunnel of a motorway Explanatory diagram showing the appearance of the fire hydrant storage box in normal conditions from the front, top and side Explanatory drawing showing the first hose guide and the second hose guide arranged in the housing taken out and shown from the front, the plane and the side Explanatory drawing showing the internal structure of the fire hydrant storage box from the front and top Explanatory drawing showing the appearance of the fire hydrant storage box with the door open to be operated from the road side from the front, top and side The perspective view which extracted and showed the door opening part in the fire hydrant storage box of FIG. Explanatory drawing showing the first operation nameplate taken out from FIG. Perspective view showing the door opening/closing mechanism arranged behind the front-opening handle Rear view showing the closed state of the door by the door opening/closing mechanism An explanatory diagram showing a cross section of a door opening/closing mechanism that opens the second upper door in front and slides open when the front door drops. Explanatory drawing showing a cross section of a connecting portion of the door main body and the front edge frame door of the second upper door by means of a hinge. Explanatory drawing showing the appearance of the fire hydrant storage box with the door open to be operated from the observer's passage side from the front, top and side The perspective view which looked at the fire hydrant storage box of FIG. 12 from the back side and showed it Explanatory drawing showing a cross section of a structure for rear-opening the first upper door together with the second upper door. Explanatory diagram showing a cross section of the water discharge control mechanism and the fire hydrant storage box on the observer's passage side as seen from the road surface

[Overview of Tunnel Emergency Equipment]
FIG. 1 is an explanatory diagram showing a tunnel emergency equipment including a fire hydrant installed in a tunnel of a motorway. As shown in FIG. 1, the inside of a tunnel 10 constructed by the shield construction method is covered with a cylindrical tunnel wall surface 12 and partitioned by a floor slab 18 to provide a road 15. In this example, The road 15 has two lanes in one direction.

A guard passage 14 is provided along a tunnel wall surface 12 on the left side of a road 15 partitioned by a floor slab 18, and an inner space under the guard passage 14 is used as a duct 22, and electric conduits and the like are laid. . The guard passage 14 is, for example, 90 centimeters high and 70 centimeters wide.

The lower side of the floor slab 18 on which the road 15 is formed is partitioned into a plurality of sections in the lateral direction of the tunnel. The management passageway 20 is used as an emergency evacuation passageway in the event of a fire in the tunnel. A water supply main pipe 24 is laid in the management passage 20 .

A fire hydrant system 16 is installed every 50 meters in the longitudinal direction of the tunnel 10, and the fire hydrant system of the fire hydrant system 16 is separated into a fire hydrant storage box 30 containing a hose and a water discharge control mechanism storage part 100. .

The fire hydrant storage box 30 is arranged in a fire hydrant embedding portion which is hollowed out in a box shape over the road surface of the lifeguard passage 14 and the wall surface on the road 15 side. The water discharge control mechanism storage unit 100 is arranged in the management passage 20 below the fire hydrant storage box 30, a branch pipe 24a branched from the water supply main pipe 24 is drawn, and fire extinguishing foam is supplied to the fire hydrant storage box 30. A water supply pipe 25 is erected.

[Exterior structure of fire hydrant storage box]
FIG. 2 is an explanatory view showing the appearance of the fire hydrant storage box from the front, plane and side. As shown in FIG. 2, the fire hydrant storage box 30 of the fire hydrant equipment 16 is embedded in the interior space under the road surface of the guard passage 14 . As shown in FIG. 2A, the fire hydrant storage box 30 has a front door 32 vertically slidably arranged in a front door opening 31 formed on the upper side of the front center of the housing.

Further, as shown in FIG. 2B, a first upper door 36 and a second upper door 38 are provided on the upper surface of the housing 28 on the road surface side of the lifeguard passage 14 of the fire hydrant storage box 30 . The first upper door 36 is arranged so that it can open rearward as shown in the first upper door 36a of FIG. 2(C).

The second upper door 38 is arranged in a door opening 35 that opens in front of the first upper door 36 so that it can be opened forward, as shown by the second upper door 38a in FIG. 2(C). Further, the second upper door 38 is divided into a door body 40 and a front edge frame door 42, and the front edge frame door 42 has the same width as the front edge upper frame 37 fixed to the upper front part of the housing 28. It has become.

The second upper door 38 composed of the door main body 40 and the front edge frame door 42 is configured by the door main body 40 and the front edge frame door 42 when the front is opened as shown in the second upper door 38a of FIG. 2(C). are integrally opened and closed, and when the first upper door 36a is opened forward as shown in FIG. is opened and closed.

Here, the front opening of the second upper door 38 means that the second upper door 38 opens and closes vertically around the rear edge of the door on the depth side of the second upper door 38 as shown in the second upper door 38a in FIG. 2(C). It means to be Further, the rear opening of the first upper door 36 means that the upper door 36 is opened and closed vertically around the door front edge portion on the front side of the upper door 36 as shown in the first upper door 36a in FIG. 2(C). Say.

The front door 32 is held in the illustrated closed state by engagement with the second upper door 38 . When the fire hydrant storage box 30 is operated from the road 15 side, the front door 32 is engaged with the second upper door 38 by pulling forward the handle lever of the front opening handle 34 provided on the front door 32 . The stop is released, and the front door 32 slides down to be opened. At the same time, the second upper door 38 opens forward.

On the other hand, when the fire hydrant storage box 30 is operated from the guard passage 14 side, the handle 44 provided at two locations of the first upper door 36 is pulled out and lifted to open backward.

[Structure of hose guide]
As indicated by broken lines in FIG. 2, a first hose guide 60 is arranged inside the front door 32 to form a partition for the front side hose outlet, and inside the first upper door 36 is arranged a partition for the upper side hose outlet. A forming second hose guide 80 is arranged.

FIG. 3 is an explanatory view showing the first hose guide and the second hose guide arranged in the housing from the front, top and side.

As shown in FIG. 3(A), a first hose guide 60 that partitions and forms the front hose outlet 45 is arranged on the upper front side of the housing 28 . The first hose guide 60 uses a metal pipe member, and the pipe member 60a is arranged downward from both sides of the front door opening 31 shown in FIG. ), the pipe member 60a is curved in the depth direction by connecting the pipe members 60b and 60c at the center, and furthermore, the pipe member 60c, which is the curved portion, is located at the lower side of the housing 28 to accommodate the hose. A hose guide structure 90 in which at least two guide pipes 92 are erected is arranged.

The first hose guide 60 is composed of pipe members 60a to 60c, so that when the hose with the foam nozzle is pulled out from the front hose outlet 45 to the road side, the contact resistance with the hose is reduced and the hose is pulled out smoothly. which reduces hose wear and hose pull-out force.

Further, as shown in FIG. 3B, a second hose guide 80 that partitions and forms a top hose outlet 82 is arranged on the top side of the housing 28 . The second hose guide 80 uses a metal pipe member like the first hose guide 60, and the pipe member 80a is arranged in a substantially rectangular loop shape that is long in the lateral direction on the depth side of the top door opening. The center of the substantially rectangular loop shape is cut off and bent forward by connecting the pipe members 80b and 80c.

The second hose guide 80 is composed of pipe members 80a to 80c, so that when the hose with a foam nozzle is pulled out from the upper hose outlet 82 to the observer passage side, the contact resistance with the hose is reduced and smooth. Allows withdrawal, thereby reducing hose wear and hose withdrawal force.

[Internal structure of fire hydrant storage box]
4A and 4B are explanatory diagrams showing the internal structure of the fire hydrant storage box from the front and the top, FIG. 4A showing the front, and FIG. Indicates a plane.

As shown in FIG. 4A, the inner lower side of the fire hydrant storage box 30 is a hose storage portion 86, in which the shape-retaining hose 52 is wound horizontally inward. Here, since the fire hydrant storage box 30 has a width of about 1.4 meters and a depth of about 0.35 meters, the length of one turn of the hose 52 wound inside the hose storage portion 86 is approximately 3 meters. 0.5 m, and the hose length of 30 m or more is required, so the hose 52 should be wound inward for 9 turns or more.

A first hose guide 60 that partitions the front door opening 31 shown in FIG. 2 is disposed in the upper front portion of the fire hydrant storage box 30, and two guide pipes 92 are provided in the center of the front side of the hose storage portion 86 below it. Standing in a position inside.

The hose 52 wound inside the hose housing portion 86 is, as shown in the plane of FIG. It is wound with a slight curve inward.

For this reason, the parallel line hose portion 52a on the front side of the hose 52 is deformed inward into a shape similar to a gourd, and due to this deformation, the deformed parallel line hose portion 52a of the hose 52 rebounds outward. It is possible to reliably prevent the collapsing of the parallel line portion 52a of the hose 52 wound inwardly due to the generation of force and the generation of the force to press against the inner wall side of the housing.

Further, when the door is opened and the hose 52 is pulled out from the front hose outlet 45 or the upper hose outlet 82 (see FIG. 3), the hose 52 is pushed out due to the deformation of the radius portion 52b of the hose 52. In addition to the force, the parallel line portion 52a of the hose 52 also generates a force to push out the hose 52 due to the deformation force of the hose guide structure, which makes it possible to reduce the force for pulling out the hose.

[Opening and closing mechanism of the front door and the second upper door]
FIG. 5 is an explanatory view showing the appearance of the fire hydrant storage box with the door opened to be operated from the road side from the front, top and side views, and FIG. is.

(Opening the front door and the second upper door)
As shown in FIGS. 5 and 6, when the front opening handle 34 provided on the front door 32 is opened, the front door 32 is unlocked from the second upper door 38, and the front door 32 slides down. At the same time, the second upper door 38 is pushed up by a gas spring 56 functioning as a door-opening urging mechanism and opened forward about the hinge 46. Extension of the stopper arm 58 locks the second upper door 38 in the open position. The front hose outlet 45 whose both sides and the lower side are partitioned by the pipe member of the opened first hose guide 60 is opened.

Further, the front hose outlet 45 is connected to the door opening 35 opened by the front opening of the second upper door 38, thereby forming a hose outlet space that opens forward and upward.

The gas spring 56 includes a cylindrical body containing pressurized gas and oil, and a rod telescopically provided in the body. It has a structure in which a push-up force is applied to the rod via

A foam nozzle 50 is detachably locked to the rear surface of the second upper door 38 by a nozzle holder 54 that functions as a nozzle locking mechanism. The nozzle holder 54 has, for example, a three-dimensional degree of freedom, and suspends the foam nozzle 50 connected to the tip of the hose 52 regardless of the open/closed position of the second upper door 38 .

A manual pilot valve 62 provided in a pilot pipe 61 is arranged inside the upper door opening on the right side of the second upper door 38, and the manual pilot valve 62 is exposed by opening the second upper door 38 forward, and is operated by the operation lever. Opening and closing operations are possible. The manual pilot valve 62 remotely controls a fire hydrant valve provided in the water discharge control mechanism housing portion 100 of the management passage 20 shown in FIG.

The second upper door 38 is opened forward in a state in which the door body 40 and the front edge frame door 42 are integrated, and the detailed structure thereof will be clarified later.

A first hose guide 60 using a pipe member is arranged on the left, right, and below the front door opening 31 opened by sliding the front door 32, and the foam nozzle 50 is removed from the nozzle holder 54, and the hose 52 is attached. By slidingly contacting the pipe member of the first guide 60 when pulling out, the pull-out force of the hose 52 is reduced and the wear of the hose 52 is prevented.

After pulling out the hose 52 by holding the foam nozzle 50, by turning the operation lever of the manual pilot valve 62 to the open position, the fire hydrant valve is remotely opened, and fire-extinguishing foam is supplied to the foam nozzle. Fire foam can be released from 50.

(First operation nameplate)
As shown in FIGS. 5 and 6, a first operation nameplate 94 is arranged on the rear surface of the door body 40 of the second upper door 38, and when the second upper door 38 is opened forward, the first operation nameplate 94 is It is exposed so that it can be visually recognized by the user operating from the road side.

FIG. 7 is an explanatory view showing the first operation nameplate of FIG. 6 taken out. As shown in FIG. 7, the first operation nameplate 94 indicates the operation procedure in operation display portions 94a, 94b, and 94c by explanatory text and pictograms in addition to the characters "operation method".

This operation procedure is performed in the order of "1 remove nozzle" on the operation display section 94a, "2 pull the lever" on the operation display section 94b, and "3 water comes out" on the operation display section 94c.

As a result, when the front door 32 and the second upper door 38 are opened by operation from the road side as shown in FIGS. Accordingly, the user removes the foam nozzle 50 from the nozzle holder 54, then opens the manual pilot valve 62 with the operation lever, and finally releases the fire extinguishing foam from the foam nozzle 50 at the tip of the pulled out hose 52. It is possible to perform the operation skillfully.

[Details of door opening/closing mechanism]
FIG. 8 is a perspective view showing the door opening/closing mechanism arranged on the back side of the front-opening handle, and FIG. 9 is a rear view showing the closed state of the door by the door opening/closing mechanism.

As shown in FIGS. 8 and 9, on the rear side of the front door 32, a door opening/closing mechanism that operates by operating a front opening handle 34 is provided. In this door opening/closing mechanism, bearing members 66 are arranged on the rear surface of the front door 32 on both sides of the handle body 34a. At the position of the bearing member 66, a set of two hook arms 70 are provided in an upright state.

A link lever 65 is fixed to the shaft member 64 from behind the handle body 34a. When the handle lever of the front opening handle 34 is pulled forward to open, the link lever 65 operates to rotate the shaft member 64 in the depth direction.

A hook claw 70a is formed at the tip of the hook arm 70. The hook claw 70a, as shown in FIG. The receiving member 72 is locked, thereby locking the front door 32 to the second upper door 38 and holding it in the closed state.

The handle lever of the front-opening handle 34 is biased toward the non-operating position by a built-in spring member. A force is applied to the receiving member 72 to urge the receiving member 70a.

When the second upper door 38 is closed, the hook arm 70 is engaged with the receiving member 72 to suspend the front door 32 at the closed position. Since the suspension load is received, the receiving member 72 is U-shaped and the hook arm 70 is composed of two pieces, so that sufficient suspension strength to support the weight of the front door 32 can be secured.

A positioning rib 74 is arranged to stand downward on the front side of a receiving member 72 provided on the rear surface of the front edge frame door 42 . When the second upper door 38 shown in FIG. 6 is closed, the positioning rib 74 positions the second upper door 38 by entering the outside of the door frame 63 arranged at the upper front edge of the housing 28, and also closes the second upper door 38. The front door 32 locked in the closed state of 38 is positioned by positioning the upper end of the front door 32 outside the positioning rib 74 .

A hinge 48 that rotatably connects the door body 40 to the front edge door frame 42 connects the front edge door frame 42 and the door body 40 through an opening 75 formed in a positioning rib 74 so that the front edge door frame 42 and the door body 40 can be opened and closed. .

FIG. 10 is an explanatory diagram showing a cross section of a door opening/closing mechanism that opens the second upper door in front and slides it open when the front door drops. As shown in FIG. 10, in a normal state, the handle lever of the front opening handle 34 is in the non-operating position. A U-shaped receiving member 72 erected on the rear surface of the second upper door 38 in the closed position, more specifically, on the rear surface of the front edge frame door 42 of the second upper door 38 is locked, and the front door 32 is closed. I have it locked.

In addition, since the door main body 40 is arranged in the door opening 35 (see FIG. 2) formed in the first upper door 36, the rear edge portion side of the door main body 40 in the second upper door 38 is hinged. One end of the hinge 46 is fixed to the rear surface of the first upper door 36 , the other end of the hinge 46 is fixed to the rear surface of the door body 40 via a shaft pin, and the hinge 46 connects the second upper door 38 to the first upper door 36 . The front can be opened freely.

In this state, when the user pulls the handle lever of the front-opening handle 34 forward from the road side to open it, the shaft member 64 is rotated by the operation of the link lever 65, and the hook arm 70 swings backward to hook. The claw 70a is removed from the receiving member 72, thereby releasing the engagement with the receiving member 72, the front door 32 is slid and opened by its own weight, and the second upper door 38 is connected to the door main body 40 and the front edge. In the state in which the frame door 42 is integrated, the front side of the first upper door 36 is opened about the hinge 46 as indicated by the second upper door 38a indicated by the imaginary line.

FIG. 11 is an explanatory view showing a cross section of a connecting portion of the door main body and the front edge frame door of the second upper door by means of a hinge. As shown in FIG. 11, the door body 40 and the front edge frame door 42 that constitute the second upper door 38 are pivotally supported by hinges 48 so that they can be opened and closed. One end of the hinge 48 is fixed to the rear surface of the front edge frame door 42, and the opposite side of the hinge 48 is fixed to the rear surface of the door body 40 via a pivot pin.

[Mechanism for rearward opening of the first upper door]
Fig. 12 is an explanatory diagram showing the appearance of the fire hydrant storage box with the door opened from the observer's passage side from the front, top and side, and Fig. 13 is a perspective view showing the fire hydrant storage box in Fig. 12 from the back side. FIG. 14 is an explanatory diagram showing a cross section of a structure for rearward opening of the first upper door integrally with the second upper door.

(Opening of the first upper door integrated with the second upper door)
As shown in FIGS. 12 and 13, when the fire hydrant storage box 30 is operated from the guard's passage, the user moves the handle 44 from the first upper door 36 of the fire hydrant storage box 30 located on the road surface of the guard's passage. is pulled out and lifted, the first upper door 36 is opened rearward around the hinge 76 provided on the door front edge side, and the stopper arm 78 is extended to lock it in the open position.

At this time, as shown in FIG. 14, the hook arm 70 of the second upper door 38 is locked to the receiving member 72 of the front edge frame door 42, and the hook arm 70 locks the front door 32 in the closed state. When the first upper door 36 is opened rearward with respect to the housing 28 by the hinge 76 , the door body 40 of the second upper door 38 connected to the first upper door 36 by the hinge 46 is opened by the hinge 48 . The door body 40 of the second upper door 38 is rotated integrally with the first front door 36 and rear-opened integrally with the first front door 36 .

Therefore, the hinge 76 provided between the first upper door 36 and the housing 28 and the hinge 48 provided between the door main body 40 and the front edge door frame 42 of the second upper door 38 have their respective rotation centers. are arranged so as to line up on the same axial center line in the horizontal direction.

When the first upper door 36 is rear-opened integrally with the door body 40 of the second upper door 38, the upper surface of the housing 28 is opened. A top door frame 84 is provided so as to border the periphery of the top door opening of the housing 28, and the first top door 36 is placed on top of the top door frame 84 to close the door. To surely support the weight even if a person passes over a first upper door 36 in a state.

A second hose guide 80 using a pipe member is arranged inside the opened top door opening of the housing 28 to form a top hose outlet 82 as a partition. The upper surface hose outlet 82 opens in a substantially rectangular loop shape elongated in the horizontal direction on the depth side of the upper surface door opening due to the arrangement of the pipe member 80a of the second hose guide 80, and is divided in the center of the front side of the substantially rectangular loop shape. The pipe members 80b and 80c are arranged from the front to open forward. Under the first hose guide 80, the central pipe member 60c of the first hose guide 60 arranged at the front door opening is positioned so as to protrude in the depth direction.

The foam nozzle 50 locked to the nozzle holder 54 on the back surface of the door main body 40 of the second upper door 38 has a pipe member 60c of the first hose guide 60 and pipe members 80b and 80c of the second hose guide 80 in plan view. It is located in a suspended state in the space inside the enclosure surrounded by

When the first upper door 36 is rear-opened together with the door body 40 of the second upper door 38, the foam nozzle 50 is removed from the nozzle holder 54 and the hose 52 is pulled out in the lateral direction, which is the observer passage surface. The hose 52 stored in the inner lower part of the housing 28 is pulled out through the right end or left end of the substantially rectangular loop-shaped opening portion of the upper surface hose outlet 82 partitioned by the second hose guide 80 .

Therefore, as shown in FIG. 4, even when the hose 52 stored in the hose storage portion 86 in the laterally long housing 28 is pulled out toward the observer's passage, it can be pulled out smoothly without being greatly bent. 2 By combining the sliding contact with the pipe member 80a used in the hose guide 80 and the reaction force of the hose 52 due to being stored in a substantially gourd shape, the wear of the hose 52 is suppressed and the hose pull-out force is reduced. and improve operability.

(Second operation nameplate)
As shown in FIGS. 12 and 13, when the first upper door 36 is rear-opened integrally with the door body 40 of the second upper door 38 in order to operate from the observer's passage side, the view from the observer's passage side is The second operation nameplate 96 horizontally disposed on the right side of the second hose guide 80 is visible.

On the second operation nameplate 96, similarly to the first operation nameplate 94 shown in FIG. 7, in addition to the characters "operation method", operation procedures are divided into operation display portions 94a, 94b, and 94c, and explanations and pictograms are displayed. It is shown.

For this reason, the user removes the foam nozzle 50 from the nozzle holder 54 while looking at the second operation nameplate 96, then opens the manual pilot valve 62 with the operation lever, and finally pulls out the hose 52. It is possible to skillfully perform the operation of discharging the fire-extinguishing foam from the foam nozzle 50 .

Further, when the first upper door 36 is rear-opened integrally with the door main body 40 of the second upper door 38 in order to operate from the observer passage side, the back surface of the door main body 40 of the rear-opened second upper door 38 Although the arranged first operation nameplate 94 is also exposed, the first operation nameplate 94 is upside down and is on the back side of the door body 40 which is opened in a nearly vertical state, so it is not used on the observer passage. It is very difficult for the operator to see, and it is possible to operate while looking at the easily visible second operation nameplate 96 without being distracted by the first operation nameplate 94 .

[Configuration of water discharge control mechanism]
FIG. 15 is an explanatory view showing a cross section of the water discharge control mechanism together with the fire hydrant storage box on the observer's passage side as seen from the road surface side.

(Configuration of water discharge control mechanism)
As shown in FIG. 15, a water discharge control mechanism storage unit 100 is arranged in the management passage 20 below the interior space of the surveillance personnel passage 14 in which the fire hydrant storage box 30 is arranged.

The water discharge control mechanism housing portion 100 is provided with a pressurized release type fire hydrant valve 102, an automatic pressure regulating valve 104, and a foam mixer 106 as valves constituting the water discharge control mechanism.

A branch pipe 24a branched from the main water supply pipe 24 is connected to the primary side of a fire hydrant valve 102, and following the fire hydrant valve 102, an automatic pressure regulating valve 104 and a foam mixer 106 are connected. A pipe from a foam concentrate tank 108 is connected to the foam mixer 106 , and fire-fighting foam obtained by mixing a predetermined ratio of the foam concentrate with the fire-fighting water flowing through the foam mixer 106 is supplied to the fire hydrant storage box 30 via the water supply pipe 25 . The hose 52 is made to supply.

The fire hydrant valve 102 has a piston 112 slidably provided in a cylinder chamber 110 as a valve opening/closing mechanism for pressurizing and releasing the fire hydrant valve 102. A valve body 115 is connected to the piston 112 by a piston rod. has a spring 114 incorporated therein.

The fire hydrant valve 102 is normally closed. The fire hydrant valve 102 is closed by discharging fire extinguishing water from the cylinder chamber 110, reducing the pilot pressure to zero, pushing the piston 112 in the closing direction by the spring 114, and bringing the valve body 115 into contact with the valve seat. The channel on the secondary side and the secondary side is closed to be in a closed state.

In order to open the fire hydrant valve 102, fire-fighting water is supplied to the cylinder chamber 110 to pressurize the pilot pressure, thereby causing the piston 112 to stroke outward against the spring 114, thereby separating the valve body 115 from the valve seat. The open state is established by connecting the primary side and the secondary side with each other.

A manual pilot valve 62 that is opened and closed by an operating lever is provided to remotely open the fire hydrant valve 102 . A pilot pipe 116a drawn from the branch pipe 24a is connected to the primary side of the manual pilot valve 62, and the secondary side of the manual pilot valve 62 is connected to the cylinder chamber 110 of the fire hydrant valve 102 by a pilot pipe 116b. .

In the present embodiment, the manual pilot valve 62 is directly opened and closed by the lever, but the manual pilot valve 62 is arranged at another place in the fire hydrant storage box 30 and remotely opened and closed by a wire link or the like. You can let me.

In addition, a notification device panel 130 is provided on the front left upper portion of the fire hydrant storage box 30 . The notification device panel 130 is provided with a red indicator light 132 , a transmitter 134 , an answer lamp 136 and a telephone jack 138 . The red indicator light 132 is always lit so that the installation location of the fire hydrant equipment can be seen from a distance.

In the event of a fire, when the transmitter 134 is pressed to turn on the push button switch, a transmission signal is transmitted to the fire receiver in the monitoring room to issue a fire alarm, and accordingly a response signal is sent from the fire receiver to turn on the response lamp. 136 is lit, and the red indicator light 132 is flashed.

(Operation of Fire Hydrant Equipment)
When a vehicle accident accompanied by a fire occurs in the tunnel 10, the user goes to the fire hydrant storage box 30 near the place where the fire broke out, presses the transmitter 134 of the notification device panel 130, and reports the fire to the disaster prevention receiver of the monitoring center. When a signal is transmitted and an acknowledgment signal is received from the disaster prevention receiver, the response lamp 136 is turned on and the red indicator lamp 132 is flashed to confirm completion of notification to the monitoring center side.

Subsequently, when the front opening handle 34 of the fire hydrant storage box 30 is opened to release the lock, the front door 32 is slid down and opened, and at the same time, the second upper door is opened. 38 is opened in front to expose the foam nozzle 50 locked by the nozzle holder 54 on the rear surface of the second upper door 38 opened in front.

If the vehicle is stopped in front of the fire hydrant storage box 30 and cannot be operated from the road 15 side, the user will operate from the guard passage 14 side.

Subsequently, when the manual pilot valve 62 arranged on the right side of the top door opening of the fire hydrant storage box 30 is opened by lever operation, the fire extinguishing water from the branch pipe 24a flows through the pilot pipe 116a, the manual pilot valve 62 and the pilot pipe 116b. The pilot pressure is supplied to the cylinder chamber 110 of the fire hydrant valve 102 through the air, and the pilot pressure is pressurized, causing the piston 112 to stroke outward against the spring 114 and separating the valve body 115 from the valve seat, thereby opening the fire hydrant valve 102. be.

When the fire hydrant valve 102 is opened, the fire extinguishing water from the water main pipe 24 flows through the fire hydrant valve 102, the automatic pressure regulating valve 104, and the foam mixer 106 from the water supply pipe 25 toward the hose 52 of the fire hydrant storage box 30. The foam stock solution is mixed at a predetermined ratio in the mixer 106, and when the fire-extinguishing foam is discharged from the foam nozzle 50 of the hose 52 pulled out from the fire hydrant storage box 30, the fire-extinguishing foam formed by entraining air is discharged. be.

In addition, when the fire hydrant valve 102 is opened, it is necessary to send a pump start signal to the fire pump equipment to start it. are provided. Instead of the pressure switch 125, a fire hydrant valve open detection switch that is turned on by the operation of opening the lever of the manual pilot valve 62 and transmits a pump start signal may be provided.

When the fire is extinguished and the fire extinguishing work is completed, the operating lever is returned to the closed position to close the manual pilot valve 62 . As a result, the water in the cylinder chamber 110 is slowly drained through the orifice 126, the pilot pressure is reduced to zero, the piston 112 is pushed back by the spring 114 and comes into contact with the valve seat, and the fire hydrant valve 102 is closed to extinguish the fire. Foam emission is stopped.

Further, when inspecting the water discharge control mechanism, the person in charge goes to the water discharge control mechanism storage unit 100 arranged in the management passage 20 and opens the manual release valve 122, whereby the fire extinguishing water is supplied to the cylinder chamber 110. The pilot pressure is increased to allow the fire hydrant valve 102 to open for a predetermined water discharge test. In this case, the manual drain valve 124 may be opened to close the fire hydrant valve 102 .

[Modification of the present invention]
(Door opening/closing mechanism)
The door opening/closing mechanism of the front door and the second upper door shown in the above embodiment is an example. An appropriate mechanism is included as long as it has a function of unlocking the front door to slide it open, and rearward opening of the first upper door integrally with the second front door.

(Hose guide)
In addition, the hose guide shown in the above embodiment is an example, and a front hose outlet is formed inside the front door opening to pull out the hose to the road side, and a guard passage side is formed inside the top door opening. A hose guide of suitable construction is included to form a top surface hose outlet through which the hose is drawn to.

(Operation nameplate)
Further, the operation nameplate shown in the above embodiment is an example, and when the upper door is opened forward, it is exposed so as to be visible from the road side. If the operation nameplate is exposed visually when the upper door is opened from the rear, the operation nameplate may have an appropriate arrangement and structure.

(Foam hydrant equipment)
In the above embodiment, a foam fire hydrant system that discharges fire-extinguishing foam is taken as an example, but the present invention is not limited to this, and a fire hydrant system that discharges fire-extinguishing water may be used.

(others)
Moreover, the present invention includes appropriate modifications that do not impair its purpose and advantages, and is not limited by the numerical values shown in the above embodiments.

10: Tunnel 12: Tunnel wall surface 14: Observer passage 15: Road 16: Fire hydrant equipment 18: Floor slab 20: Management passage 22: Duct 24: Water supply main pipe 24a: Branch pipe 25: Water supply pipe 28: Housing 30: Fire hydrant storage box 28: housing 31: front door opening 32: front door 34: front opening handle 34a: handle body 35: door opening 36: first upper door 37: front edge upper frame 38: second upper door 40: door Body 42: Front edge frame door 44: Handle 45: Front hose outlets 46, 48, 76: Hinge 50: Foam nozzle 52: Hose 54: Nozzle holder 56: Gas springs 58, 78: Stopper arm 60: First hose guide 60a, 60b, 60c, 80a, 80b, 80c: pipe member 62: manual pilot valve 61: pilot pipe 64: shaft member 66: bearing member 70: hook arm 72: receiving member 74: positioning rib 75: opening 80: second Hose guide 82: Upper surface hose outlet 84: Upper surface door frame 86: Hose storage part 90: Hose guide structure 92: Guide pipe 94: First operation nameplate 96: Second operation nameplate 100: Water discharge control mechanism storage part 102: Fire hydrant valve 104: Automatic pressure control valve 106: Foam mixer 108: Foam concentrate tank 110: Cylinder chamber 112: Piston 114: Spring 115: Valve elements 116a, 116b: Pilot piping 122: Manual release valve 124: Manual drain valve 125: Pressure switch 126 : Orifice

Claims (2)

A fire hydrant device with a fire-fighting hose housed inside was embedded in the guard passage along the wall of the tunnel, with the front part facing the road and the upper part facing the road surface of the guard passage. A fire hydrant facility in a tunnel,
The fire hydrant device is
a front opening formed in the front;
an upper opening formed in the upper portion;
a first hose guide that guides the hose downward when the hose is drawn downward from the front opening toward the outside of the road;
a second hose guide that laterally guides the hose when the hose is pulled out laterally from the upper opening on the road surface side of the lifeguard passage;
with
The second hose guide is located on the upper opening side, has a character bottom portion located on the back side of the fire hydrant device and a character top portion on the front opening side when viewed downward from the upper opening, and the character top portion has an upper guide portion arranged to form an open convex shape, and the hose is passed from the lower space of the upper guide portion through the inside of the convex shape of the upper guide portion to the upper side of the upper opening It can be pulled out into the space,
The first hose guide has a lower guide part disposed on the front opening side so as to form a U shape with a top part positioned on the upper opening side when viewed rearward from the front opening. and passing the hose from the rear space of the lower guide part to the front external space of the front opening via the inside of the U-shape of the lower guide part below the second hose guide A fire hydrant installation in a tunnel, characterized in that it can be pulled out.
A fire hydrant device in a tunnel that houses a fire extinguishing hose inside and is installed embedded in the guard passage along the tunnel wall with the front part facing the road side and the upper part facing the road surface side of the guard passage. and
a front opening formed in the front part facing the road in an installed state;
an upper opening formed in the upper part that is on the road surface side of the observer passage in the installed state;
a first hose guide that guides the lower side of the hose when the hose is pulled out from the front opening to the lower side of the road;
a second hose guide that guides the side of the hose when the hose is pulled out laterally from the upper opening on the road surface side of the observer passage;
with
The second hose guide is located on the upper opening side, has a character bottom portion located on the back side of the fire hydrant device and a character top portion on the front opening side when viewed downward from the upper opening, and the character top portion has an upper guide portion arranged to form an open convex shape, and the hose is passed from the lower space of the upper guide portion through the inside of the convex shape of the upper guide portion to the upper side of the upper opening It can be pulled out into the space,
The first hose guide has a lower guide part disposed on the front opening side so as to form a U shape with a top part positioned on the upper opening side when viewed rearward from the front opening. and passing the hose from the rear space of the lower guide part to the front external space of the front opening via the inside of the U-shape of the lower guide part below the second hose guide An in-tunnel fire hydrant device characterized in that it can be pulled out.

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