JP7604607B2 - Fire hydrant devices and fire hydrant facilities - Google Patents

Description

The present invention relates to a fire hydrant device that houses a fire hose with a nozzle attached to the end, and a fire hydrant facility in which the fire hydrant device is installed.

Conventionally, fire hydrant devices have been installed as emergency equipment inside tunnels on expressways and motorways, and the device has a fire hydrant door that can be opened and closed, and houses a hose with a nozzle at the end and valves including a fire hydrant valve.

Fire hydrant devices are generally installed embedded in the tunnel walls at intervals of, for example, 50 meters along the tunnel side walls. In the event of a vehicle accident involving a fire, in a tunnel with a guard passage, road users such as the driver of the accident vehicle climb up to the guard passage using steps installed on the side of the guard passage, open the fire hydrant door of the fire hydrant device installed on the tunnel wall to the front, remove the hose with the nozzle, and perform fire extinguishing operations.

The supervisor's passage is set up as a side wall passageway that is elevated above the road surface, allowing supervisors to safely inspect various equipment installed inside the tunnel, including the fire hydrant system, without interfering with vehicle traffic inside the tunnel.

In addition, in tunnels without guard passages, users such as the driver of the accident vehicle approach the fire hydrant installed on the tunnel wall, and similarly open the fire hydrant door forward and take out the hose with the nozzle to carry out fire-fighting operations.

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

However, in urban tunnels built using the shield tunneling method or similar, the structure does not allow fire hydrant devices to be embedded into the tunnel walls, and so fire hydrant devices must be embedded into the side (wall) of the guard passage.

However, if a fire hydrant device with a door that opens forward like a conventional fire hydrant is installed in the guard passage, there is a problem that when the fire hydrant door opens, it will exceed the building limit and jump out onto the road.

To solve this problem, a fire hydrant storage box has been proposed that is embedded in the guard passageway, with a front door that slides open and closes facing the road, and an upper door that opens and closes upwards on the guard passageway side.

With a fire hydrant storage box thus embedded in the guard passageway, in the event of a fire caused by a vehicle accident, the user can open the front door facing the road and simply and easily pull out the nozzle-equipped hose from the hose storage section to put out the fire. Also, if a vehicle stops in front of the fire hydrant device and it is not possible to operate it from the front door, the user can open the upper door of the guard passageway to pull out the nozzle-equipped hose and put out the fire without being hindered by the stopped vehicle.

The width of a fire hydrant storage box that is embedded in a guard passage is about 0.7 meters, and the width of the fire hydrant storage box is narrower, for example, at about half the width of the guard passage, at about 0.35 meters, and a hose of about 30 meters is stored inside the fire hydrant storage box, coiled horizontally inward.

As shown in the schematic diagrams of Figures 23(A) and (B), a structure is being considered in which the foam nozzle 204 attached to the end of the hose 202 stored in the fire hydrant storage box 200 is inserted sideways into a nozzle holder 208 arranged horizontally on the back surface of the upper door 206, and is detachably engaged therein.

However, when the fire hydrant storage box 200 is embedded in the monitor's passage, it is assumed that it will be operated from the road side or from the road surface side of the monitor's passage, and the positional relationship between the position of the user operating it and the position of the foam nozzle 204 engaged with the exposed nozzle holder 208 will differ depending on the operating position, and the position from which the foam nozzle 204 is easily removed will differ depending on the user's position. Therefore, it is assumed that it will be difficult to remove the foam nozzle 204 from the operating position depending on the position at which the foam nozzle 204 is engaged.

The present invention aims to provide a fire hydrant device that allows a fire hose to be easily and simply removed from the road side and the road surface side of the guard passage, and a fire hydrant facility in which the fire hydrant device is installed.

(Fire hydrant equipment)
The present invention relates to a fire hydrant device in which a fire hose with a nozzle attached to the tip is stored inside,
An upper door is pivotally supported on a door opening formed on the upper surface of the fire hydrant device so as to be freely opened and closed in the vertical direction around a rear edge portion as an axis, and is pivotally supported on a door opening formed on the upper surface of the fire hydrant device so as to be freely opened and closed in the vertical direction around a front edge portion as an axis,
A nozzle holder that is disposed on the rear surface of the upper door and that detachably holds the nozzle;
Equipped with
The nozzle holder is
The door can be rotated in a predetermined direction relative to the rear surface of the upper door.
The nozzle is maintained in a hanging position by rotating when the upper door is opened around the rear edge portion and when the upper door is opened around the front edge portion, thereby locking the nozzle in a hanging position when the upper door is closed, when the upper door is opened around the rear edge portion and when the upper door is opened around the front edge portion.

( Nozzle hanging state )
The nozzle holder holds the nozzle in a suspended state with the tip facing upward .

(Fire hydrant facilities)
The present invention relates to a fire hydrant facility having a fire hydrant embedded part which is an internal space below the road surface of a guard passage along a tunnel wall in a tunnel,
The above-mentioned fire hydrant device is characterized in that it is embedded in the fire hydrant embedding section so that the top surface is exposed on the road surface side of the guard passage and the front surface is exposed on the road side.

(Basic Effects)
The present invention relates to a fire hydrant device in which a fire hose with a nozzle attached to the tip is stored inside, the fire hydrant device comprising an upper door that is pivoted in a door opening formed on the top surface of the fire hydrant device so that it can be opened and closed vertically around its rear edge as an axis and also pivoted so that it can be opened and closed vertically around its front edge as an axis, and a nozzle holder that is disposed on the back surface of the upper door and detachably engages the nozzle, the nozzle holder is rotatable in a predetermined direction relative to the back surface of the upper door and rotates to maintain the nozzle in a suspended state when the upper door is opened around its rear edge as an axis and when the upper door is opened around its front edge as an axis, so that the nozzle is engaged in a suspended state when the upper door is closed, when the upper door is opened around its rear edge as an axis, and when the upper door is opened around its front edge as an axis, therefore, when the upper door is installed embedded in a guard's passage in a tunnel, the fire hose can be simply and easily taken out from the road side and from the road surface side of the guard's passage. In addition, since the nozzle remains suspended regardless of whether the upper door is open or closed, the fire hose connected to the end of the nozzle does not deform when the upper door is opened or closed, which makes it possible to suppress wear and tear on the fire hose.

A diagram showing emergency equipment for tunnels, including fire hydrant equipment, installed in a tunnel on a motorway An explanatory diagram showing the appearance of a fire hydrant storage box under normal circumstances FIG. 3 is an explanatory diagram showing the appearance of the fire hydrant storage box of FIG. 2 from the front and top; FIG. 3 is an explanatory diagram showing the appearance of the fire hydrant storage box of FIG. 2 from the side; An explanatory diagram showing the front opening handle of a fire hydrant storage box provided with a front opening mechanism. FIG. 13 is an explanatory diagram showing the structure of a front-opening mechanism that opens the second upper door from the front and slides it open by dropping the front door. An explanatory diagram showing the internal structure of a fire hydrant storage box An explanatory diagram showing the opening operation of the front door and the second upper door when operating from the road side. FIG. 13 is an explanatory diagram showing the opening operation of the first upper door when operating from the guard passage side. FIG. 1 is an explanatory diagram showing a first embodiment of the nozzle holder in a closed state of the upper door; FIG. 13 is an explanatory diagram showing the state in which the foam nozzle is suspended by the nozzle holder of the first embodiment when the second upper door is in the front-open state and when the first upper door is in the rear-open state; FIG. 11 is an explanatory diagram showing a second embodiment of the nozzle holder; FIG. 11 is an explanatory diagram showing a third embodiment of the nozzle holder; FIG. 13 is an explanatory diagram showing the state in which the foam nozzle is suspended by the nozzle holder of the third embodiment when the second upper door is in the front-open state and when the first upper door is in the rear-open state; FIG. 13 is an explanatory diagram showing a nozzle holder according to a third embodiment as viewed from the front. FIG. 13 is an explanatory diagram showing the nozzle holder of the third embodiment as viewed from the side; FIG. 13 is an explanatory diagram showing the nozzle holder of the third embodiment in a state in which a part of the holder member is rotated about a vertical axis, as viewed from the side. FIG. 13 is an explanatory diagram showing a nozzle holder according to a fourth embodiment as viewed from the front. FIG. 13 is an explanatory diagram showing the nozzle holder of the fourth embodiment as viewed from the side; FIG. 13 is an explanatory diagram showing another embodiment of the door structure in the fire hydrant storage box. FIG. 14 is an explanatory diagram showing the opening operation of the front door and the upper door when the fire hydrant storage box of FIG. 13 is operated from the road side. FIG. 14 is an explanatory diagram showing the opening operation of the upper door when the fire hydrant device of FIG. 13 is operated from the monitor passage side. An explanatory diagram showing the nozzle holder under consideration

[Outline of tunnel emergency equipment]
Fig. 1 is an explanatory diagram showing a tunnel emergency facility including a fire hydrant facility installed in a tunnel for expressways. As shown in Fig. 1, the inside of a tunnel 10 constructed by the shield method is covered with a cylindrical tunnel wall 12, and a road 15 is provided by dividing it with a deck 18. In this example, the road 15 has two lanes in one direction.

A guard passage 14 is provided along the tunnel wall 12 on the left side of the road 15 separated by the deck 18, and the internal space below the guard passage 14 is used as a duct 22 in which electrical conduits and the like are laid. The guard passage 14 is, for example, 90 centimeters high and 70 centimeters wide.

The underside of the deck 18 on which the road 15 is formed is divided into multiple sections laterally across the tunnel. For example, the section located below the guard passage 14 is used as a maintenance passage 20, which is also used as an emergency evacuation passage in the event of a fire inside the tunnel. A water supply main 24 is laid in the maintenance passage 20.

Fire hydrant facilities 16 are installed every 50 meters along the length of the tunnel 10, and the fire hydrant equipment of the fire hydrant facilities 16 is installed separately in a fire hydrant storage box 30 that stores the hose, and in a water discharge control mechanism storage section 26.

The fire hydrant storage box 30 is located in a fire hydrant recess that is carved into a box shape extending from the road surface of the guard passage 14 to the wall on the road 15 side. The water discharge control mechanism storage section 260 is located in the management passage 20 below the fire hydrant storage box 30, and a branch pipe 24a branching off from the main water supply pipe 24 is routed into the fire hydrant storage box 30, and a water supply pipe 25 that supplies fire water to the fire hydrant storage box 30 is also installed.

[Fire hydrant facilities]
FIG. 2 is an explanatory diagram showing the appearance of a fire hydrant storage box under normal circumstances, FIG. 3 is an explanatory diagram showing the appearance of the fire hydrant storage box of FIG. 2 from the front and from above, and FIG. 4 is an explanatory diagram showing the appearance of the fire hydrant storage box of FIG. 2 from the side.

(External structure of fire hydrant storage box)
2 to 4, the fire hydrant storage box 30 of the fire hydrant equipment 16 is embedded in the internal space below the road surface of the monitor passage 14. The fire hydrant storage box 30 has a front door 32 arranged in a front door opening 33 formed on the upper center front side of a housing 31 so as to be able to slide freely in the vertical direction.

A first upper door 34 of the same width as the front door 32 is disposed in a first upper door opening 35 formed in the center of the top surface of the fire hydrant storage box 30 on the road surface side of the monitor passage 14. Furthermore, a second upper door opening 37 is formed in the center of the front side of the first upper door 34, and a second upper door 36 is disposed here.

The first upper door 34 is supported on both sides of the front edge by hinges 46 located at the front corners of the upper part of the housing 31, and can be opened upward from the rear around the hinges 46, as shown in the first upper door 34a in Figure 4.

The rear edge of the second upper door 36 is supported by a hinge 42 on the second top door opening 37 of the first upper door 34, and as shown in the second upper door 36a in Figure 4, it can be opened forward by opening upward around the hinge 42.

A front-opening handle 38 is supported by a hinge 44 on the front edge of the second upper door 36, and a front-opening mechanism provided on the handle body of the front-opening handle 38 locks the front door 32 in the closed state as shown when the second upper door 36 is closed. When a user operates the front-opening handle 38 from the road 15 side, the front door 32 is released from the lock on the second upper door 36 when the user opens the front-opening handle 38, and the front door 32 falls to the back side of the housing 31 under its own weight, opening the front door opening 33. Also, by opening the second upper door 36 from the front, the second top door opening 37 of the fire hydrant storage box 30 is opened.

Here, the hinge 46 that pivots the first upper door 34 to the front corner of the housing 31, and the hinge 44 that pivots the front opening handle 38 to the front edge of the second upper door 36 are arranged so that their central axes are coaxial, and the front opening handle 38 that locks the housing 31 and front door 32 in the closed position is the fixed side, and the hinges 44, 46 pivotally support the first upper door 34 together with the second upper door 36 so that they can be freely opened to the rear.

A reporting device panel 48 is provided on the upper left front of the fire hydrant storage box 30. The reporting device panel 48 is provided with a red indicator light 50, a transmitter 52, a response lamp 54, and a telephone jack 55. The red indicator light 50 is always lit, allowing the location of the fire hydrant equipment to be known from a distance. In the event of a fire, when the transmitter 52 is pressed to turn on the push button switch, a transmission signal is sent to a disaster prevention receiving panel installed in a monitoring center in a monitoring room, etc., and a fire alarm is issued. In response to this, a response signal is sent from the disaster prevention receiving panel, the response lamp 54 is lit, and the red indicator light 50 flashes.

[Front opening mechanism]
Fig. 5 is an explanatory diagram showing the front-opening handle of a fire hydrant storage box provided with a front-opening mechanism, with Fig. 5(A) showing the front, and Fig. 5(B) showing the side as viewed from X-X in Fig. 5(A). Fig. 6 is an explanatory diagram showing the mechanical structure of the front-opening mechanism that opens the second upper door from the front and slides it open by dropping the front door, with Fig. 6(A) showing the closed state, and Fig. 6(B) showing the state in which the front-opening handle has been operated to open.

As shown in FIG. 5, the front-opening mechanism has an axle member 56 protruding from both sides of the handle body 38a of the front-opening handle 38, which is supported by a hinge 44 at the tip of the second upper door 36 located on the top surface of the fire hydrant storage box 30. When the second upper door 36 is in the closed state, the tip of the axle member 56 is inserted into an axle hole of a bearing member 58 located on the back side of the front door 32, thereby engaging the front door 32 with the second upper door 36 and holding it in the closed position.

When the front opening handle 38 is lifted up, the shaft member 56 is pulled inward and comes out of the shaft hole of the bearing member 58, releasing the lock on the front door 32, which then slides down under its own weight and opens the front door opening 33.

As shown in FIG. 6(A), the front-opening mechanism 60 has one end of a pair of bent links 62 connected to a movable fulcrum 64 within the handle body 38a, the bent position of the link 62 being fixed to the handle body 38a as a rotation fulcrum 66, and the other end of the link 62 being connected to a fulcrum 68 at the shaft end of the shaft member 56 as a sliding fulcrum 70, and the movable fulcrum 64 is biased upward as shown by a spring 72.

When the front opening handle 38 is not being operated, the link 62 rotates outward under the force of the spring 72, fitting the shaft member 56 into the shaft hole 58a of the bearing member 58 and locking the front door 32 to the second upper door 36.

When the front-opening handle 38 is lifted up, as shown in FIG. 6(B), the moving fulcrum 64 moves downward against the spring 72 via a link mechanism (not shown), causing the link 62 to rotate inward and pull the shaft member 56 inward, thereby disengaging the tip of the shaft member 56 from the shaft hole 58a of the bearing member 58, releasing the lock on the front door 32, causing the front door 32 to slide down under its own weight and open the front door opening 33.

The front-opening mechanism 60 is not limited to the link mechanism shown in FIG. 6, but may include any suitable link mechanism that pulls the shaft member 56 inward by lifting up the front-opening handle 38, thereby removing it from the shaft hole 58a of the bearing member 58.

[Internal structure of a fire hydrant storage box]
FIG. 7 is an explanatory diagram showing the internal structure of a fire hydrant storage box, in which FIG. 7(A) shows the front view and FIG. 7(B) shows a plan view seen from the YY cross section of FIG. 7(A).

As shown in FIG. 7, the inside lower side of the housing 31 of the fire hydrant storage box 30 is a hose storage section 74, in which a shape-retaining hose 76 is layered horizontally and wound inward.

When viewed from above, the housing 31 has a rectangular shape with a width of approximately 1.4 meters and a depth of approximately 0.35 meters. Therefore, when the hose 76 is wound inwardly in the hose storage section 74, the wound shape of the hose 76 becomes a rounded rectangle consisting of two parallel lines and two semicircles. The length of one turn of the hose 76 wound inwardly inside the flat rectangular housing 31 is approximately 3.5 meters. Since the hose length required is 30 meters or more, the hose 76 should be wound inwardly with 9 or more turns.

Here, the hose 76, which is wound inwardly into a rounded rectangle inside the housing 31, is shown as parallel line hose portions 76a and 76c and semicircular hose portions 76b and 76d.

A hose guide structure 80 is provided on the central front side of the housing 31 to deform inward the parallel hose portion 76a on the front side of the hose 76, which is wound inward into a rounded rectangle inside the housing 31.

The hose guide structure 80 has four guide pipes 80a, 80b, 80c, and 80d made of metal pipes that stand up on the bottom plate 81. The guide pipes 80a and 80d at both ends stand up along the inner surface of the housing 31, while the central guide pipes 80b and 80c stand up a specified distance inward. By winding the hose 76 inward along the guide pipes 80a, 80b, 80c, and 80d of the hose guide structure 80, the parallel hose portion 76a on the front side of the hose 76 is deformed inward to take on a shape roughly resembling a gourd. This deformation generates a repulsive force in the deformed parallel hose portion 76a of the hose 76 that tends to spread outward.

By providing this hose guide structure 80, the hose 76, which is overlapped and wound inward inside the housing 31, generates a repulsive force that spreads outward as the rounded oval parallel hose portion 76a is deformed inward by the hose guide structure 80, and generates a force pressing against the inner wall of the housing 31, making it possible to reliably prevent the parallel hose portions 76a, 76c of the overlapped and wound inward hose 76 from collapsing inward even if they become long.

Here, the hose guide structure 80 deforms the parallel hose portion 76a on the front side of the hose 76 inward, while the parallel hose portion 76c on the back side is not deformed inward. However, the inward deformation of the parallel hose portion 76a increases the force that causes the hose 76 as a whole to spread outward, and it is possible to reliably prevent the parallel hose portion 76c on the back side, which is not deformed inward, from collapsing inward.

In addition, when the front door 32 and the second upper door 36 or the first upper door 34 are opened to pull the hose 76 outward, in addition to the force that tries to push the hose out due to the deformation of the radial hose portions 76b and 76d of the hose 76, a force that tries to push the hose 76 out is also generated by the inward deformation of the parallel hose portion 76a of the hose 76 due to the hose guide structure 80, making it possible to reduce the force required to pull out the hose 76.

Guide pipes 82a-82d and guide pipes 84a, 84b are arranged on the upper part of the hose guide structure 80 so as to surround the inside of the front door opening 33, the first top door opening 35, and the second top door opening 37 shown in Figures 1 and 2. When the hose 76 is pulled out to the outside, it is brought into sliding contact with the guide pipes 82a-82c or the guide pipes 84a, 84b, thereby preventing wear on the hose 76 and reducing the force required to pull out the hose.

The foam nozzle 78 connected to the tip of the hose 76 is detachably attached to the back surface of the second upper door 36 by a nozzle holder 86. The nozzle holder 86 in this embodiment is attached by a suspension structure that suspends the foam nozzle 78 from the back surface of the second upper door 36 in a suspended state, and when the twelfth upper door 36 is opened forward as shown in upper door 36a in FIG. 4, or when the first upper door 34 is opened backward integrally with the second upper door 36 as shown in first upper door 34a in FIG. 4, the nozzle holder 86 is attached to the back surface of the second upper door 36 in a suspended state.

Therefore, when the second upper door 36 is opened from the front or the first upper door 34 is opened from the rear together with the second upper door 36, the foam nozzle 78 suspended from the back of the door appears at the top of the fire hydrant storage box 30.

When the second upper door 36 is opened from the front, the foam nozzle 78 held on the back of the door appears at a position within a range of approximately 0.9 to 1.3 meters from the road 15, which corresponds to the range from the waist to the shoulders of a user standing on the road 15. Since the foam nozzle 78 appears right in front of the user's eyes, the foam nozzle 78 can be easily removed.

When the first upper door 34 is opened from the rear, the foam nozzle 78 held on the back of the door appears at a position within a range of approximately 0.2 to 0.4 meters from the road surface of the guard passage 14. The foam nozzle 78 appears right in front of the user who is bending over the guard passage 14 to operate the rear-opening handle 40, and the user can easily remove the foam nozzle 78 from the guard passage 14 side.

In addition, an operation box is disposed inside the right side of the top opening of the housing 31, and a fire hydrant valve opening/closing lever is provided on the operation box to open and close the manual pilot valve provided inside the operation box, but this is not shown in the figure. When the fire hydrant valve opening/closing lever is operated to open, the manual pilot valve is opened, and the fire hydrant valve disposed separately in the water discharge control mechanism storage section 26 shown in FIG. 1 can be remotely opened.

In addition, one or more of the operation box, manual pilot valve, and fire hydrant opening/closing lever may be placed in the free space secured by the hose guide structure 80. Also, the connecting member between the manual pilot valve and the fire hydrant opening/closing lever, and part of the piping from the manual pilot valve to the fire hydrant valve may be placed in the free space.

By placing appropriate components in the empty space as described above, it is possible to effectively utilize the space of the fire hydrant storage box located in the guard passageway, where space is limited.

[Operation to open the second upper door and the front door from the road side]
FIG. 8 is an explanatory diagram showing the opening operation of the front door and the second upper door when operated from the road side.

As shown in FIG. 8, when a user operates the fire hydrant storage box 30 from the road side, by lifting up the front opening handle 38, the front door 32 is released from its lock and slides down under its own weight, opening the front door opening 33.

Next, when the user performs a front-opening operation to open the second upper door 36 in the depth direction, as shown in Figures 6 (A) and (B), the shaft members 56 arranged on both sides of the handle body 38a are pulled out from the bearing members 58 on the back surface of the front door 32, the second upper door 36 is opened forward around the hinge 42, and the second top door opening 37 is opened.

At this time, as shown in FIG. 7(A), the nozzle holder 86 located on the back side of the second upper door 36 is positioned in front of the user on the road, and the foam nozzle 78 engaged with the nozzle holder 86 appears in front of the user, allowing the user to easily remove the foam nozzle 78 and pull out the hose 76.

[Opening the upper door from the guard passage]
FIG. 9 is an explanatory diagram showing the opening operation of the first upper door when operated from the monitor passage side.

As shown in FIG. 9, when a user operates the fire hydrant storage box 30 from the supervisor's passage, the user leans over from the supervisor's passage and lifts up the rear-opening handle 40, which releases the rear edge of the first upper door 34 from the housing 31, and the first upper door 34 opens rearward around the hinge 46 at the front corner, opening the first top door opening 35.

At this time, the second upper door 36 is also opened backwards around the hinge 44 together with the first upper door 34, the front-opening handle 38 supported by the hinge 44 does not move, and the tip of the shaft member 56 of the front-opening mechanism 60 shown in FIG. 6 provided on the front-opening handle 38 remains fitted into the shaft hole 58a of the shaft member 58 arranged on the back surface of the front door 32, and the second upper door 36 is opened backwards together with the first upper door 34 while the front door 32 remains locked in the closed state.

When the first top door opening 35 is opened by opening the first top door 34 from the rear, as shown in FIG. 6(A), the foam nozzle 78 attached to the nozzle holder 86 located on the back side of the second top door 36 appears in front of the user bending over in the guard passage, allowing the user to easily remove the foam nozzle 78 and pull out the hose 76.

[First embodiment of nozzle holder]
Fig. 10 is an explanatory diagram showing the first embodiment of the nozzle holder in the upper door closed state, Fig. 10(A) is a front view, Fig. 10(B) is a side view, and Fig. 11 is an explanatory diagram showing the suspension of the foam nozzle by the nozzle holder of the first embodiment with the second upper door in the front open state (Fig. 11(A)) and the first upper door in the rear open state (Fig. 11(B)).

As shown in FIG. 10, the nozzle holder 86A of this embodiment is mounted on a support member 88 arranged on the back surface of the second upper door 36, and the holder body 90 is pivotally mounted on an axis pin 94 with an axis 96 parallel to the axis of the second upper door 36 by the hinge 42 as shown in FIG. 8. At the tip of the holder body 90, a check section 92 is provided with radially arranged check claws 92a using multiple bent leaf springs that detachably grip the reverse tapered tip 78a of the foam nozzle 78.

In this way, the nozzle 78 is detachably hung from the back surface of the second upper door 36 by the nozzle holder 86A, and as shown in FIG. 7(A), the hose 76 connected to the rear end of the foam nozzle 78 faces downward toward the hose storage section 74. As shown in FIG. 7(B), no matter where the end position of the horizontally wound hose 76 ends, the hose 76 does not deform significantly, and the second upper door 36 can be opened and closed smoothly by opening it from the front, and the first upper door 34, which is integrated with the second upper door 36, can be opened and closed smoothly by opening it from the rear.

Figure 11 (A) shows the state in which the second upper door 36 is opened forward by the user operating it from the road side, and at this time the front door 32 is released and slides down to open. When the second upper door 36 is opened forward as shown in the figure, the support member 88 of the nozzle holder 86A fixed to the back surface of the door moves as the second upper door 36 opens, and the holder body 90 supported by the pivot pin 94 maintains a suspended position suspended downward under the weight of the foam nozzle 78 and hose 76 that are suspended by engaging with the check claw 92a of the check part 92, and the foam nozzle 78 is pulled up while in this suspended position, appearing in front of the user operating it from the road side, making it easy to remove the foam nozzle 78 when the second upper door 36 is open.

To remove the foam nozzle 78 from the nozzle holder 86A, pull the foam nozzle 78 downward to remove it from the check claw 92a of the check portion 92. When restoring the fire hydrant after use, the tip of the foam nozzle 78 can be pushed from below into the check claw 92a of the check portion 92 of the nozzle holder 86A to lock it in place.

Figure 11 (B) shows the state in which the first upper door 34 is opened backwards with the second upper door 36 integrated therewith by a user operating it from the guard passage side. When the first upper door 34 is opened backwards to the position shown in the figure, the support member 88 of the nozzle holder 86A fixed to the back surface of the door moves as the second upper door 36 opens, but the holder body 90 supported by the pivot pin 94 maintains a suspended position in which it is suspended downwards under the weight of the foam nozzle 78 and hose 76 that are engaged and suspended by the check claw 92a of the check part 92, and the foam nozzle 78 is pulled upwards while in this suspended position, appearing in front of the user who is bending over to operate it from the guard passage side, making it easy to remove the foam nozzle 78 when the first upper door 34 is open.

As shown in Figures 7 and 11, it is preferable that the handle of the foam nozzle 78 is suspended so that it faces sideways. By suspending the handle of the foam nozzle 78 so that it faces sideways, it is possible to prevent the handle of the foam nozzle 78 from moving to the back regardless of the direction from which the door is opened. In order to ensure that the handle of the foam nozzle 78 is suspended so that it faces sideways, it is possible to display instructions on the suspension method on the back of the upper door, to place a mark on the tip of the nozzle, or to provide a mechanism that locks only when the nozzle handle is facing sideways.

A mechanism may also be provided to lock the upper door when it is open. Locking the door can prevent the upper door from closing due to the force of pulling down the foam nozzle 78 when removing it.

The force with which the check claws 92a of the check portion 92 of the nozzle holder 86A hold the foam nozzle 78 is strong enough to withstand the weight of the foam nozzle 78 and the portion of the hose 76 that floats when the top door is open.

The retention can be released by the sum of the weight of the foam nozzle 78 and the part of the hose 76 that floats when the top door is opened, and the pulling force used to remove the foam nozzle 78.

In addition, a switch may be provided that turns on when the foam nozzle 78 is pressed into the check claws 92a of the check portion 92 from below, and a mechanism may be provided in which the gripping force of the nozzle is released by releasing the switch.

[Second embodiment of the nozzle holder]
Figure 12 is an explanatory diagram showing a second embodiment of the nozzle holder, where Figure 12(A) shows the front, Figure 12(B) shows the side, and Figure 12(C) shows a plan view of the box-shaped nozzle gripping portion as viewed from below.

As shown in FIG. 12, the nozzle holder 86B of this embodiment is the same as the embodiment of FIG. 11 in that the holder body 90 is pivotally mounted on a support member 88 arranged on the back surface of the second upper door 36 by an axis 96 parallel to the axis of the second upper door 36 by the hinge 42 as shown in FIG. 8, using an axis pin 94, but the tip of the holder body 90 is provided with a box-shaped nozzle gripping portion 98.

The nozzle gripper 98 has openings on the left and right sides for inserting and removing the reverse tapered tip 78a of the foam nozzle 78, and a lower opening 98a is formed laterally on the lower side with a width sufficient to pass through the base side of the reverse tapered tip 78a. In the center of the lower opening 98a, an arc-shaped notch 98b is formed to fit and hold the reverse tapered tip 78a of the foam nozzle 78 received from the side.

With the nozzle holder 86B of this embodiment, the holder body 90 is supported by an axle pin 94 against a support member 88 on the rear surface of the door, so that the suspension position of the foam nozzle 78 can always be kept constant regardless of the opening or closing position of the first upper door 34, allowing the first upper door 34, which is integrated with the second upper door 36, to be opened and closed smoothly by opening from the rear.

The foam nozzle 78 can be suspended by fitting the inverted tapered tip 78a of the foam nozzle 78 from either the left or right side into the box-shaped nozzle gripping portion 98 located at the tip of the holder body 90. When the first upper door 34 is opened, the foam nozzle 78 suspended and engaged in the nozzle gripping portion 98 can be easily removed by pulling it out in either the left or right direction.

The reverse taper tip portion 78a has a structure in which the diameter at the tip is wider than at the base. The arc-shaped notch 98b is wider than the base side of the reverse taper tip portion 78a and narrower than the tip of the reverse taper tip portion 78a. In addition, the lower opening 98a has a width that allows the base side of the reverse taper tip portion 78a to pass through, so by inserting the nozzle from the lower opening 98a through the reverse taper tip portion 78a to the notch 98b and releasing it by releasing the foam nozzle 78, the nozzle falls to a place where the diameters of the notch 98b and the reverse taper tip portion 78a are equal, and the nozzle is fitted and held in place. This restricts horizontal and downward movement, and upward movement is also restricted by the weight of the nozzle itself.

When removing the foam nozzle 78, the foam nozzle 78 can be removed from the lower opening 98a by shifting the foam nozzle 78 upward and lifting it to a height where the reverse taper tip 78a is smaller than the width of the lower opening 98a. The reverse taper tip may be concave in the middle in the height direction, like a gourd. In this case, the lower opening 98a should be wide enough to pass through the recess in the reverse taper tip 78a.

As shown in FIG. 12, it is preferable to suspend the foam nozzle 78 so that the handle faces sideways. By suspending the foam nozzle 78 so that the handle faces sideways, it is possible to prevent the foam nozzle 78 handle from moving to the back regardless of the direction from which the door is opened. To ensure that the foam nozzle 78 handle faces sideways, instructions on the suspension method may be displayed on the back surface of the upper door, or a mark may be placed on the nozzle tip. Also, a guide may be provided on the nozzle gripping portion 98, facing downward from around the cutout 98b, with a length approximately equal to the height from the reverse tapered tip 78a to the handle.

[Third embodiment of the nozzle holder]
Fig. 13 is an explanatory diagram showing a third embodiment of the nozzle holder, Fig. 13(A) shows the inside front view with the front of the housing and a part of the front door broken away, and Fig. 13(B) shows a cross section seen from the side. Fig. 14 is an explanatory diagram showing the suspension of the foam nozzle by the nozzle holder when the second upper door is in the front-open state (Fig. 14(A)) and the first upper door is in the rear-open state (Fig. 14(B)). Fig. 15 is an explanatory diagram showing the third embodiment of the nozzle holder when the upper door is open, as seen from the front, Fig. 16 is an explanatory diagram showing the nozzle holder of the third embodiment when seen from the side, and Fig. 17 is an explanatory diagram showing the nozzle holder of the third embodiment when some of the holder members are rotated around a vertical axis, as seen from the side.

(Configuration of nozzle holder with three-axis degrees of freedom)
As shown in FIGS. 15 to 17, the nozzle holder 86C of the present embodiment is composed of a support member 120, a first holder member 124, a second holder member 128, a third holder member 132, and a check portion 138.

The support member 120 has two support arms 120a extending in front of the mounting portion 120b, which is fastened to the rear surface of the second upper door 36 by a bolt 121 and a nut 122.

The first holder member 124 is supported by an axle pin 126 in an axle hole at the tip of the support arm 120a so as to be freely rotatable about a first axis 140. The first holder member 124 is a member with an upwardly opening U-shaped cross section. Here, the first axis 140 of the axle pin 126 is parallel to the axis of the second upper door 36 formed by the hinge 42 shown in FIG. 8.

Below the first holder member 124, the second holder member 128 is supported by a bolt shaft 130 and a nut 131 so as to be freely rotatable about the second axis 142. The second holder member 128 is a member with a U-shaped cross section that opens downward, and the second axis 142 is perpendicular to the first axis 140.

Below the second holder member 128, the third holder member 132 is supported by an axle pin 134 so as to be rotatable about a third axis 144. The second holder member 128 is a member with a U-shaped cross section that opens downward, and the third axis 144 is perpendicular to the second axis 142.

A checker portion 138 is fixed to the underside of the third holder member 132 by a rivet 136. The checker portion 138 has four check claws 138a made of leaf springs formed in an approximately "U" shape and arranged radially. The inverted tapered tip 78a of the foam nozzle 78 is fitted from below into the check claws 138a, so that the foam nozzle 78 is detachably engaged in a suspended state.

In this embodiment of the nozzle holder 86C, the check portion 138 is connected to the support member 120, which is the fixed side, via the first holder member 124, the second holder member 128, and the third holder member 132 so as to be freely rotatable around three axes defined by the axle pin 126, the bolt shaft 130, and the axle pin 134, which are the first to third axial lines 140, 142, and 144. In other words, in this embodiment of the nozzle holder 86C, the check portion 138 to which the foam nozzle 78 is engaged is suspended from the rear surface of the second upper door 36, which is the fixed side, in a free state with three degrees of freedom.

In addition, the check portion 138 is freely suspended from the fixed support member 120 via the first holder member 124, second holder member 128, and third holder member 132, which have three degrees of freedom in three axes. This allows the check portion 138 to move freely around three axes in response to the movement of the foam nozzle 78 to which the hose 76 is connected as the door is opened and closed. This allows the multiple check claws 138a gripping the reverse tapered tip 78a of the nozzle to engage evenly and in a well-balanced manner, ensuring that the foam nozzle 78 is reliably engaged in a suspended state without the need to make the engagement force of the four check claws 138a on the foam nozzle 78 very strong.

In addition, since the foam nozzle 78 can be securely and detachably engaged without increasing the engagement force of the check claws 138a, the foam nozzle 78 engaged with the nozzle holder 86C can be removed with a light force, improving operability.

(Upper door closed)
As shown in Figure 13, when the second upper door 36 is in the normal state with the second upper door 36 closed, the support member 120 fixed to the back surface of the closed second upper door 36 has the support arm 120a facing downward, and the check portion 138 is suspended below it via the first holder member 124, the second holder member 128 and the third holder member 132 which are connected with three-axis degrees of freedom, and the reverse tapered tip 78a of the foam nozzle 78 is fitted into the four check claws 138a of the check portion 138, and is engaged in a suspended state by supporting the weight of the foam nozzle 78 and the hose 76.

When the foam nozzle 78 is detachably hung by the nozzle holder 86C on the back surface of the second upper door 36 in the closed state, the hose 76 connected to the rear end of the foam nozzle 78 faces downward toward the hose storage section 74, as shown in FIG. 7(A). As shown in FIG. 7(B), no matter where the end position of the horizontally wound hose 76 ends, the hose 76 does not deform significantly, and the second upper door 36 can be smoothly opened and closed by opening it from the front, and the first upper door 34, which is integrated with the second upper door 36, can be smoothly opened and closed by opening it from the rear.

(Upper door open)
14A shows the state in which the second upper door 36 is opened forward by the user operating it from the road side, and the front door is released from the lock and slides down to open. When the second upper door 36 is opened forward as shown in the figure, the foam nozzle 78 engaged with the checker part 138 supported in a free state via the first holder member 124, the second holder member 128, and the third holder member 132, which have three degrees of freedom, is pulled up in response to the movement of the support member 120 of the nozzle holder 86C fixed to the back surface of the door as the second upper door 36 opens, and the foam nozzle 78 appears in front of the user operating it from the road side, making it easy to remove the foam nozzle 78 when the second upper door 36 is open.

To remove the foam nozzle 78 from the nozzle holder 86C, the check portion 138 is hung freely from the fixed support member 120, so the foam nozzle 78 can be easily removed from the check claws 138a of the check portion 138 by pulling the foam nozzle 78 downward from the front. When restoring the fire hydrant after use, the tip of the foam nozzle 78 can be easily locked in place by pushing it from below into the check portion 138 of the nozzle holder 86C.

Figure 14 (B) shows the first upper door 34 opened backwards with the second upper door 36 integrated, by a user operating it from the guard passage side. When the first upper door 34 is opened backwards to the position shown in the figure, the foam nozzle 78 engaged with the checker part 138 supported in a free state via the first holder member 124, the second holder member 128, and the third holder member 132, which have three degrees of freedom, is pulled upward in response to the movement of the support member 120 of the nozzle holder 86C fixed to the rear surface of the second upper door 36, and the foam nozzle 78 appears in front of the user who is bending over to operate it from the guard passage side, making it easy to remove the foam nozzle 78 when the first upper door 34 is open.

The nozzle holder 86C is positioned on the back surface of the second upper door 36 by fixing the support member 120 at a position that is deeper than the center position of the front and rear of the second upper door 36. Therefore, when the first upper door 34 is opened from the rear while the second upper door 36 is integrated as shown in Figure 14 (B), the nozzle holder 86C is raised to a higher position than when it is opened from the front as shown in Figure 14 (A), making it easier to remove the foam nozzle from the monitor's passage.

In addition, as shown in FIG. 14(B), the position of at least a portion of the foam nozzle 78 when the first upper door 34 is opened from the rear is configured to be higher than the position of at least a portion of the foam nozzle 78 when the second upper door 36 shown in FIG. 14(A) is opened from the front, making it easier for an operator to remove the foam nozzle 78 from the monitor passage side.

In addition, in the first embodiment of FIG. 11, the support member 88 is provided in the center of the back surface of the second upper door 36, but by providing the support member 88 on the depth side of the back surface of the second upper door 36 as in the third embodiment of FIG. 14, the position of at least a part of the foam nozzle 78 when the first upper door 34 is opened from the rear is configured to be higher than the position of at least a part of the foam nozzle 78 when the second upper door 36 is opened from the front, making it easier for an operator to remove the foam nozzle 78 from the monitor passage side.

Also, by positioning the nozzle holder 86C on the back surface of the second upper door 36 at the center position in the front-to-rear direction of the door, the nozzle holder 86C can be pulled up to the same height when the second upper door 36 is opened to the front and when the first upper door 34 is opened to the rear with the second upper door 36 integrated, as in the first embodiment of FIG. 11.

The check portion 138 of the third embodiment shown in Figures 14 to 17 may be the nozzle gripping portion 98 of the second embodiment shown in Figure 12.

[Fourth embodiment of the nozzle holder]
FIG. 18 is an explanatory diagram showing a nozzle holder according to a fourth embodiment of the present invention as viewed from the front, and FIG. 19 is an explanatory diagram showing the nozzle holder according to the fourth embodiment of the present invention as viewed from the side.

(Configuration of nozzle holder with two-axis degree of freedom)
As shown in FIGS. 18 and 19 , the nozzle holder 86 D of the present embodiment is composed of a support member 120 , a first holder member 124 , a second holder member 146 and a check portion 138 .

The support member 120 has two support arms 120a extending in front of the mounting portion 120b, and the mounting portion 120b is fastened to the rear surface of the second upper door 36 by a bolt 121 and a nut 122.

The first holder member 124 is supported by an axle pin 126 in the axle hole at the tip of the support arm 120a so as to be rotatable about a first axis 140. The first holder member 124 is parallel to the axis of the second upper door 36 by the hinge 42 shown in FIG. 8.

Below the first holder member 124, a second holder member 146 is supported by a bolt shaft 130 and a nut 131 so as to be rotatable about a second axis 142 in the vertical direction. The second holder member 146 is a member with a rectangular cross section that opens to the side, and the second axis 142 is perpendicular to the first axis 140.

A checker portion 138 is fixed to the underside of the second holder member 146 by a rivet 136. The checker portion 138 has four check claws 138a formed by leaf springs arranged radially, and the foam nozzle 78 is suspended and removably engaged by fitting the reverse tapered tip 78a of the foam nozzle 78 into the check claws 138a from below.

In this embodiment of the nozzle holder 86D, the check portion 138 is connected to the support member 120, which is the fixed side, via the first holder member 124 and the second holder member 146 so as to be freely rotatable around two axes defined by the first and second axial lines 140, 142 of the shaft pin 126 and the bolt shaft 130. In other words, in this embodiment of the nozzle holder 86D, the check portion 138 that engages the foam nozzle 78 is suspended with two degrees of freedom from the rear surface of the second upper door 36, which is the fixed side.

In addition, the check portion 138 is suspended freely about two axes from the support member 120, which is the fixed side, via the first holder member 124 and the second holder member 146, which have two degrees of freedom in two axes. This allows the check portion 138 to move freely about two axes in response to the movement of the foam nozzle 78 to which the hose 76 is connected as the door is opened and closed. This allows the multiple check claws 138a gripping the reverse tapered tip 78a at the tip of the nozzle to engage evenly and in a well-balanced manner, and the foam nozzle 78 can be reliably engaged in a suspended state without the need to make the engagement force of the four check claws 138a on the foam nozzle 78 very strong.

In addition, since the foam nozzle 78 can be securely and detachably engaged without increasing the engagement force of the check claws 138a, the foam nozzle 78 engaged with the nozzle holder 86D can be removed with a light force, improving operability.

When a user opens the second upper door 36 from the road side, the foam nozzle 78 engaged with the check portion 138 supported in a free state via the first holder member 124 and the second holder member 146, which have two degrees of freedom, is pulled upward in response to the movement of the support member 120 of the nozzle holder 86D fixed to the rear surface of the door as the second upper door 36 opens, and the foam nozzle 78 appears in front of the user operating from the road side, making it possible to easily remove the foam nozzle 78 when the second upper door 36 is open.

In addition, when the first upper door 34 is opened from the rear with the second upper door 36 integrated by a user operating it from the monitor's passage, the foam nozzle 78 engaged with the check portion 138 supported in a free state via the first holder member 124 and the second holder member 146, which have two degrees of freedom, is pulled upward in response to the movement of the support member 120 of the nozzle holder 86D fixed to the rear surface of the door as the second upper door 36 opens, and the foam nozzle 78 appears in front of the user who is bending over to operate it from the monitor's passage, making it possible to easily remove the foam nozzle 78 when the first upper door 34 is open.

The check portion 138 of the third embodiment shown in Figures 18 and 19 may be the nozzle gripping portion 98 of the second embodiment shown in Figure 12.

[Another embodiment of the door opening and closing structure]
Figure 20 is an explanatory diagram showing another embodiment of the door structure of a fire hydrant storage box, Figure 21 is an explanatory diagram showing the opening operation of the front door and upper door when the fire hydrant storage box of Figure 20 is operated from the road side, and Figure 22 is an explanatory diagram showing the opening operation of the upper door when the fire hydrant storage box of Figure 20 is operated from the monitor passage side.

(Front-opening upper door structure)
The door opening and closing structure of this embodiment shown in Figure 20 is characterized in that, as opposed to the embodiment in which the upper door in Figure 2 is divided into a first upper door 34 and a second upper door 36, the upper door 100 is a single door and is supported on a shaft so that it can be opened freely both front and rear.

When a user operates the front door from the road side, the front door 32 is released from its lock by operating the front opening handle 38, and the front door 32 slides down and is opened as shown in FIG. 21.

The upper door 100 can be opened by holding the front opening handle 38 and opening it upward, at which point the nozzle holder 86 located on the back of the upper door 100 appears in front of the user. Note that the foam nozzle that is engaged with the nozzle holder 86 is not shown in the illustration.

The engagement of the front door 32 with the upper door 100 has the same structure as shown in Figures 5 and 6. When a user operates it from the road side, by operating the front opening handle 38, the shaft members 56 taken out on both sides of the handle body 38a are pulled in and come out of the shaft holes of the bearing members 58 arranged on the back surface of the front door 32, thereby releasing the engagement with the front door 32, and the front door 32 can be opened by sliding down and the upper door 100 can be opened.

As shown in FIG. 21, the structure of the rear edge for opening the upper door 100 from the front is such that the shaft members 104 extend from both sides of the handle body 102a of the rear-opening handle 102 of the upper door 100, and the tip of the shaft member 104 is fitted into the shaft hole of the bearing member 106 fixed to the housing 31. This structure is the same as the opening and closing structure of the front-opening handle 38 side shown in FIGS. 5 and 6.

The upper door 100 can be opened and closed in the vertical direction around the axis of both the shafts by fitting the shaft member 104 of the rear-opening handle 102 into and supporting it in the bearing member 106 on the housing 31 side.

(Top door opens from the rear)
When a user operates the fire hydrant storage box 30 in Fig. 20 from the monitor's passage, operating the rear-opening handle 102 releases the lock with the housing 31, and the upper door 100 can be opened from the rear as shown in Fig. 22. At this time, the nozzle holder 86 arranged on the back surface of the upper door 100 appears in front of the user who is bending over.

As shown in FIG. 21, the opening and closing structure for opening the upper door 100 from the rear is such that the shaft members 110 are supported on the back side of both sides of the front edge of the upper door 100, and correspondingly, semi-cylindrical bearing members 108 that open upward are fixedly disposed on both sides of the front edge of the top door opening 112 of the housing 31, and with the shaft members 110 of the upper door 100 fitted into the bearing members 108, the upper door 100 is supported so as to be able to open from the rear, centered on the axis line of both.

The front-opening operation handle 38, located in the center of the front edge of the upper door 100, has a shaft member 56 with the tip inserted into a shaft member 58 on the inside of the front door 32, allowing the upper door 100 to be opened from the rear while the front door 32 is kept locked in the closed state.

For the fire hydrant storage box 30 with the door opening and closing structure shown in Figures 20 to 22, when the upper door 100 is closed, the foam nozzle is engaged in a suspended state suspended by the nozzle holder 86 on the back surface of the door, and even when the upper door 100 is opened from the front or rear, the foam nozzle maintains its suspended position by the nozzle holder 86 and is pulled up as the upper door 100 is opened. This means that the position of the nozzle does not change when the upper door 100 is opened or closed, and the nozzle can be easily removed when the upper door 100 is open.

[Modifications of the present invention]
(Nozzle holder)
The claw portion or box-shaped nozzle gripping portion that removably engages the foam nozzle with the nozzle holder shown in the above embodiment is just one example, and any appropriate structure can be used as long as it can removably engage the foam nozzle in a suspended state on the back surface of the door.

(Nozzle holder with 2-axis or 3-axis degrees of freedom)
In the above embodiment, two-axis or three-axis degrees of freedom of the check section are realized by multi-stage connection of an axle pin and a U-shaped holder member to a support member fixed to the back surface of the upper door, but this is not limited to this. For example, two-axis or three-axis degrees of freedom may be realized by freely swinging-connecting the check section to a support member fixed to the back surface of the upper door via a ball joint.

(Foam fire hydrant equipment)
The above embodiment has been described with reference to a foam fire hydrant system that discharges fire-extinguishing foam, but the present invention is not limited to this and may be a fire hydrant system that discharges fire-extinguishing water.

(others)
Although the above embodiment has been described with reference to a fire hydrant system having a front door, the present invention is not limited thereto, and the fire hydrant system may have a structure that does not have a front door.

Although the above embodiment takes a tunnel fire hydrant as an example, it may also be used for a fire hydrant buried in a general road. The fire hydrant storage box may also be exposed rather than buried. When used for an exposed fire hydrant storage box, it is preferable that the upper door be at a height of about 1 meter so that it is easy to open and to remove the nozzle. The fire hydrant storage box of the present invention may also be applied to surfaces at different heights where people can walk, such as two passage surfaces at different heights, or the top and bottom of a stage in a gymnasium or stage, and the wall surface adjacent to those surfaces.

The present invention also includes appropriate modifications that do not impair its objectives and advantages, and is not limited by the numerical values shown in the above embodiments.

10: Tunnel 12: Tunnel wall 14: Supervisor 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 26: Water discharge control mechanism storage section 30: Fire hydrant storage box 31: Housing 32: Front door 33: Front door opening 34: First upper door 35: First upper door opening 36: Second upper door 37: Second upper door opening 38: Front opening handle 40, 102: Rear opening handle 42, 44, 46: Hinge 48: Reporting device panel 56, 104: Shaft member 58, 106: Bearing member 58a: Shaft hole 60: Front opening mechanism 74: Hose storage section 76: Hose 78: Foam nozzle 78a: Reverse tapered tip 80: Hose guides 80a-80d, 82a-82c, 84a, 84b: Guide pipes 86, 86A, 86B, 86C, 86D: Nozzle holder 88, 120: Support member 90: Holder body 92, 138: Check portion 92a, 138a: Check claw 94: Axis pin 98: Nozzle gripping portion 100: Upper door 124: First holder member 126, 134: Axis pin 128, 146: Second holder member 130: Bolt shaft 132: Third holder member 140: First axis line 142: Second axis line 144: Third axis line

Claims (3)

In a fire hydrant device in which a fire hose with a nozzle attached to the tip is stored inside,
An upper door is pivotally supported in a door opening formed on the upper surface of the fire hydrant device so as to be freely opened and closed in the vertical direction around a rear edge portion as an axis, and is pivotally supported in a door opening formed on the upper surface of the fire hydrant device so as to be freely opened and closed in the vertical direction around a front edge portion as an axis,
A nozzle holder is disposed on a rear surface of the upper door and detachably holds the nozzle;
Equipped with
The nozzle holder is
The upper door is rotatable in a predetermined direction relative to the rear surface of the upper door,
This fire hydrant device is characterized in that when the upper door is opened about the rear edge portion as an axis and when the upper door is opened about the front edge portion as an axis, it rotates to maintain the nozzle in a hanging position, thereby locking the nozzle in a hanging position when the upper door is closed , when the upper door is opened about the rear edge portion as an axis, and when the upper door is opened about the front edge portion as an axis.
The fire hydrant device according to claim 1,
The fire hydrant device is characterized in that the nozzle holder engages the nozzle in a suspended state with the tip facing upward .
A fire hydrant facility having a fire hydrant embedded part which is an internal space below the road surface of a guard passage along a tunnel wall in a tunnel,
3. A fire hydrant facility according to claim 1, wherein the fire hydrant device is embedded in the fire hydrant embedded portion so that the upper surface is exposed to the road surface side of the guard passage and the front surface is exposed to the road side.

Images