JP7730285B2 - Fire hydrant equipment - Google Patents

Description

The present invention relates to a fire hydrant device installed in a tunnel and housing fire hoses, fire extinguishers, etc.

Traditionally, fire hydrants have been installed as emergency tunnel equipment in tunnels on expressways and expressways. A fire hydrant device consists of a casing with a tilt-forward door (fire hydrant door), a fire hose with a nozzle attached to the end, and valves including a fire hydrant valve, housed in a fire hydrant storage compartment. A fire extinguisher storage compartment with a fire extinguisher door houses, for example, two fire extinguishers. Furthermore, fire hydrant devices are generally installed by embedding them into the tunnel wall, cutting out boxes at intervals of, for example, 50 meters, along the length of the tunnel.

However, in tunnels constructed using methods such as shield tunneling, the structure of the tunnel body makes it difficult to cut out a box in the tunnel wall and install fire hydrant devices by embedding them, due to the cost and effort involved. Therefore, it is necessary to install the fire hydrant devices in an exposed state in the guard passage.

In addition, in order to install a fire hydrant device on a tunnel wall without removing the box, a wall-mounted structure has been proposed in which the fire hydrant device is attached and fixed to a mount installed on the tunnel wall.In this case, the mount is composed of a main support part fixed to the wall and a position-maintaining member that maintains the position of the fire hydrant device (Patent Document 2).

In addition, wall-mounted fire hydrant devices have issues such as the time and effort required to install them on the tunnel wall, so it is being considered to use a so-called stationary structure, in which the fire hydrant device is attached and fixed in an exposed state to a stand installed on the road surface of the guard passage, which is easier to install.

JP 2016-055073 A Japanese Patent Application Laid-Open No. 2020-078429

However, when a wall-mounted or freestanding fire hydrant is installed at a specified height in the guard's passage using a mounting base, the following work is required on site: attaching and securing the hydrant's housing to the mounting base with bolts and nuts; connecting the water supply pipes that rise from the road side of the guard's passage to the valves inside the housing; and pulling in cables from outside and connecting them to the terminal box inside the housing. This on-site work is performed by opening the tilt-forward door or fire extinguisher door on the front of the housing toward the guard's passage, and then reaching inside the housing through the door opening.

As a result, opening the tilting door or fire extinguisher door during work on the fire hydrant system can obstruct passage through the supervisor's passage, hindering access for other work. Furthermore, depending on the work being done inside the enclosure, workers may have to stand on the tilting door that opens toward the supervisor's passage, which requires the strength of the tilting door to be increased, which complicates the structure and increases costs.

The objective of the present invention is to provide a fire hydrant that allows easy access from the outside to the inside of the casing of a fire hydrant that is installed exposed on the guard passageway or tunnel wall, without obstructing passage through the guard passageway.

(Fire hydrant equipment)
The present invention provides a fire hydrant device having a housing installed at a predetermined height above the road surface of a watchman passage provided along the wall surface of a tunnel having a road, in proximity to or in contact with the tunnel wall surface,
A side door is provided on the side of the housing,
The side door can be opened to allow work inside the housing to be done from the outside of the side.

(Housing containing fire hydrant equipment and fire extinguishers)
The housing is
A first housing in which the fire hydrant device is housed and a second housing in which the fire extinguisher and the electrical device are housed are connected in a side direction,
a first side door is provided on a side surface of the first housing excluding the connecting side surface, and a second side door is provided on a side surface of the second housing excluding the connecting side surface;
By opening the first side door, work on the stand and the fire hydrant equipment can be performed from the outside of the side, and by opening the second side door, work on the stand, the fire extinguisher, and the electrical equipment can be performed from the outside of the side.

(Side doors open sideways toward the tunnel wall)
The side door is supported so as to be able to open laterally about an axis extending in the vertical direction at the side end of the side opening of the housing on the tunnel wall surface side.

(Side door opens to the front)
The side door is supported so as to be able to open laterally about an axis extending in the vertical direction at the road side end of the side opening of the housing.

(Side door opens upwards)
The side door is supported so as to be able to open upward about an axis extending in the front-rear direction at the upper end of the side opening of the housing.

(Holding the side door open)
The side door has an open holding portion that holds the side door in an open position.

(Installation and fixation of the enclosure on a stand above the guard passage)
The housing is attached and fixed to the top of a stand installed on the road surface of the guard passageway, close to the tunnel wall.

(Installation and fixing of the enclosure on a stand on the tunnel wall)
The housing is attached and fixed to the front part of the platform, which is on the road side, installed on the tunnel wall above the road surface of the guard passage.

(Basic effects)
According to the fire hydrant device of the present invention, when the fire hydrant device is installed in an exposed state in the guard passage or on the tunnel wall, the external space opposite the side of the housing is open space, and by providing a side door on the side of the housing, it is possible to open the side door and perform work inside the housing from the outside of the side simply and easily.

In addition, even if the tilt-forward door and fire extinguisher door on the front of the enclosure are closed, work inside the enclosure from the outside can be performed by opening the side door, and opening the tilt-forward door or fire extinguisher door does not obstruct the passage of security personnel.

In addition, there is no need to work on the open tilt-forward door, so there is no need to make the tilt-forward door stronger than necessary, and there is no need to provide a reinforcing structure for the tilt-forward door, simplifying the door structure and reducing costs.

(Effect of the enclosure housing the fire hydrant equipment and fire extinguisher)
In addition, the housing is configured so that a first housing containing the fire hydrant equipment and a second housing containing the fire extinguisher and electrical equipment are connected laterally, and is provided with a first side door on the side of the first housing excluding the connecting side, and a second side door on the side of the second housing excluding the connecting side.Therefore, by opening the first side door, it is possible to simply and easily perform work such as connecting water supply piping to the fire hydrant equipment, for example, valves, through the door opening, and by opening the second side door, it is possible to simply and easily perform work on the fire extinguisher and electrical equipment through the door opening.

(Effect of the side door opening sideways toward the tunnel wall)
In addition, the side door is supported so as to be able to open freely sideways around the vertical axis of the side end of the side opening of the housing on the tunnel wall side, so that opening the side door sideways towards the tunnel wall side opens the side opening of the housing, and it becomes possible to reach inside the housing from the large space on the side of the housing and perform necessary work simply and easily.

(Effect of the side door opening to the front)
In addition, the side door is supported so as to be freely opened sideways with the vertical direction of the road-side side edge of the side opening of the housing as an axis, so that it can be opened widely from the side position to a position that hits the front of the housing, rotated approximately 3/4 of a turn forward, and it is possible to reach inside the housing through the large space on the side of the housing and perform necessary work simply and easily.

(Effect of the upward opening structure of the side door)
The side door is supported so as to be freely openable upward with the upper end of the side opening of the housing in the front-rear direction as an axis, so that opening the side door upward opens the side opening of the housing, and a user can reach into the housing through the wide space on the side of the housing and perform necessary work simply and easily.

(Effect of holding the side door open)
Furthermore, the side door is held in the open position by the open holding portion, which prevents the open side door from moving and interfering with work.

(Effect of fixing the enclosure to the stand above the guard passage)
Furthermore, the housing has a stationary structure that is attached and fixed to the top of a stand installed on the road surface of the guard passageway, close to the tunnel wall, so that the work inside the housing to attach and fix the housing to the stand installed in the guard passageway using bolts and nuts can be done simply and easily by opening the side door and reaching inside the housing through the large space on the side of the housing.

(Effect of fixing the enclosure to the stand on the tunnel wall)
Furthermore, the housing has a wall-mounted structure that is attached and fixed to the road-side front part of a platform installed on the tunnel wall above the road surface of the monitor's passage, making it possible to simply and easily perform work inside the housing to attach and fix the housing to the platform installed on the tunnel wall using bolts and nuts, just like with a stationary structure, by opening the side door and reaching inside the housing through the large space on the side of the housing.

FIG. 1 is an explanatory diagram showing the installation state of a fire hydrant device in a tunnel. FIG. 1 is an explanatory diagram showing the installation state of a fire hydrant device in a tunnel cross section. FIG. 2 is a perspective view showing a stand for mounting and fixing the fire hydrant device. This is an explanatory diagram showing the internal structure of the fire hydrant device from the front with the forward-tilting door open. This is an explanatory diagram showing in plan the internal structure of a fire hydrant device equipped with a side door that opens toward the tunnel wall. FIG. 2 is an explanatory diagram showing the internal structure of the fire hydrant device from the right side. FIG. 6 is a perspective view showing the first side door of FIG. 5 in an open state. 1 is an explanatory diagram showing a plan view of the internal structure of a fire hydrant device equipped with a side door that opens to the front side of the housing. FIG. FIG. 9 is a perspective view showing the first side door of FIG. 8 in an open state. FIG. 10 is a perspective view showing the housing with a side door that opens upward in an open state.

Embodiments of a fire hydrant device according to the present invention are described in detail below with reference to the drawings. Note that the present invention is not limited to the following embodiments.

[Basic Concept of the Embodiment]
First, a basic concept of the embodiment will be described. The embodiment generally relates to a fire hydrant device in which a fire hydrant device, an electrical device, a terminal box, and a fire extinguisher are arranged in a housing.

Here, a "fire hydrant device" refers to a type of emergency equipment installed in areas subject to firefighting, such as tunnels on expressways and motorways. It is a housing installed in the area subject to firefighting, in which fire hydrant equipment such as fire hoses, electrical equipment such as red indicator lights and transmitters on electrical doors, terminal boxes, and fire extinguishers are placed or housed, and the concept includes fire hydrant facilities in which fire hydrant devices are installed.

The fire hydrant device is installed in an exposed state at a predetermined height above the road surface of the guard passageway, which is installed along the interior wall of a tunnel containing a road. Here, "predetermined height" refers to a height at which the fire hydrant device can be installed close to or in contact with the tunnel wall surface. For example, the hydrant can be installed at a predetermined height by attaching and fixing the housing to the top of a platform installed on the road surface of the guard passageway, or by attaching and fixing the housing to the front part of a platform installed on the tunnel wall surface above the road surface of the guard passageway, facing the road.

Furthermore, "frame" refers to a structure that supports an object using pillars, beams, etc., and although specific examples are not shown, it includes concepts such as a support base, foundation, base, pedestal, and base.

The fire hydrant device of this embodiment is characterized by a side door on the side of the housing, which workers can open to perform work inside the housing from the outside. Here, a "side door" refers to a door installed in a side opening on the side of the housing of a fire hydrant device that is installed in an exposed state at a predetermined height above the road surface of the monitor's passage, and it is optional whether the door is installed on both sides or on one side.

For example, the housing of a fire hydrant device comprises a first housing containing the hydrant equipment and a second housing containing the fire extinguisher, electrical equipment, and terminal box, which are connected laterally; a first side door is provided on the side of the first housing excluding the connecting side; and a second side door is provided on the side of the second housing excluding the connecting side; the first and second side doors can be opened to attach and secure the housing to the stand from the outside of the side; the first side door can be opened to allow work on the hydrant equipment from the outside of the side; and the second side door can be opened to allow work on the fire extinguisher, electrical equipment, and terminal box from the outside of the side.

Here, "fire hydrant equipment" refers to specified equipment including fire hoses and valves such as fire hydrant valves, "electrical equipment" refers to specified equipment including red indicator lights, transmitters, answering lights, and telephone jacks located on electrical doors, and "terminal boxes" refer to storage boxes equipped with terminal blocks for connecting wiring cables, etc., pulled into the housing from outside the fire hydrant device to the electrical equipment.

The side door can be opened in any direction, but for example, the side door is supported so that it can be opened sideways, with the vertical axis of the side edge of the side opening of the housing facing the tunnel wall as its axis. In this case, the side door is equipped with an open holding section that keeps it in an open position facing the tunnel wall.

The side door is supported so that it can be freely opened sideways, with the vertical axis of the road-facing side edge of the side opening of the housing as the axis. In this case, the side door is equipped with an open holding part that keeps it in an open position all the way to the front of the housing.

The side door is supported so that it can be freely opened upward, with the upper end of the side opening of the housing in the front-to-rear direction as an axis. In this case, the side door is equipped with an open holding part that keeps it in an open position, either diagonally upward or horizontally.

Specific embodiments are described below. In the specific embodiments described below, the fire hydrant device is mounted and fixed on a stand installed above the guard passageway inside the tunnel, and the side door provided on the side of the housing closest to the fire hydrant device storage section is the "first side door," and the side door provided on the side of the housing closest to the fire extinguisher storage section is the "second side door."

[Specific Contents of the Embodiment]
The fire hydrant equipment will be explained in more detail below.
a. Overview of the fire hydrant device b. Installation of the fire hydrant device c. Installation height and thinning of the fire hydrant device d. Configuration corresponding to thinning of the fire hydrant device e. Fire hydrant device stand f. Structure of the fire hydrant device with side door f1. Structure of the first housing f2. Side door of the first housing f3. Structure of the second housing f4. Storage of the fire extinguisher f5. Side door of the second housing g. On-site work performed with the side door open g1. Work to attach and fix the housing to the stand g2. Work to connect the water supply pipe g3. Work to pull in the cable g4. Inspection and repair work during operation h. Other embodiments of the side door h1. Side door with front-opening structure h2. Side door with top-opening structure i. Modified example of the present invention

[a. Overview of fire hydrant equipment]
The outline of the fire hydrant equipment will be explained in more detail below. Figure 1 is an explanatory diagram showing the installation of fire hydrant equipment inside a tunnel, with Figure 1(A) showing the installation of the fire hydrant equipment as seen from the cross section of the tunnel, and Figure 1(B) showing the installation of the fire hydrant equipment as seen from the direction of the tunnel wall.

As shown in FIG. 1(B), the housing of the fire hydrant device 10 of this embodiment is divided into a first housing 11a and a second housing 11b.

A decorative frame 13a is attached to the front of the first housing 11a. The door opening of the decorative frame 13a is divided into upper and lower halves, with a forward-tilting door 12 that functions as a fire hydrant door and opens downward on hinges 12a located at the lower part of the door opening, and a maintenance door 14 that opens upward on hinges 14a located at the upper part of the door opening. The fire hydrant equipment storage compartment inside the first housing 11a stores the required fire hydrant equipment, including fire hoses and valves such as fire hydrant valves.

A first side door 32 is provided on the right side of the first housing 11a. The first side door 32 can be opened to the right, with the vertical axis of the side edge of the side opening facing the tunnel wall as its axis.

A decorative frame 13b is attached to the front of the second housing 11b. The decorative frame 13b has two door openings. The right door opening houses an electrical door 18 that opens sideways to the right on hinge 18a, and the left door opening houses an auxiliary door 20 that opens sideways to the left on hinge 20a, allowing access to the internal terminal boxes 26a and 26b. The electrical door 18 is equipped with electrical equipment such as a red indicator light 22, a transmitter 24, and an answer lamp 25, and is also equipped with a telephone jack on the inside.

The red indicator light 22 remains lit at all times, allowing the location of the fire hydrant device 10 to be confirmed from a distance. When a fire breaks out and the transmitter 24 is pressed to turn on the push button switch, a transmission signal is sent, which is received by a disaster prevention receiving panel installed in an electrical room or other location and issues a fire alarm. The fire hydrant device 10 receives a response signal from the disaster prevention receiving panel, causing the red indicator light 22 to flash and the response lamp 25 to light up.

A high-voltage terminal box 26a and a low-voltage terminal box 26b are arranged vertically on the rear surface of the second housing 11b opposite the auxiliary door 20. The high-voltage terminal box 26a uses a built-in terminal block to connect the high-voltage cable pulled in from outside the fire hydrant device 10 to the red indicator light 22. The low-voltage terminal box 26b uses a built-in terminal block to connect the low-voltage cable pulled in from outside the fire hydrant device 10 to the transmitter 24, response light 25, telephone jack, etc.

In addition, a fire extinguisher door 16 that opens sideways to the left on hinges 16a is provided in the door opening on the left side of the decorative frame 13b, and for example, two fire extinguishers can be stored inside the fire extinguisher door 16. In addition, a viewing window 17 is provided below the fire extinguisher door 16, allowing the presence or absence of a fire extinguisher to be confirmed from outside.

In addition, a second side door 34 is provided on the left side of the second housing 11b, which can be opened sideways to the left around the vertical axis of the side edge of the side opening facing the tunnel wall.

[b. Installation of fire hydrant equipment]
The installation of fire hydrants in tunnels will be explained in more detail below. A road 46 is constructed in the longitudinal direction (left-right direction) of the tunnel below the cylindrical (circular cross section) tunnel body constructed using the shield tunneling method, and a guard passage 35 is constructed at a predetermined height above the road 46 below the tunnel wall 26 along the rear side of the road 46.

Since it is difficult to cut out a box from the tunnel wall 26 created by the shield construction method to install the fire hydrant device 10, the mount 30 is installed close to the tunnel wall 26 on the road surface of the monitor's passage 35, and the connected first and second housings 11a and 11b are attached and fixed to the mount 30, thereby installing the fire hydrant device 10. Here, the height H1 of the mount 30 is set so that the height from the road surface of the monitor's passage 35 to the transmitter 24 installed on the fire hydrant device 10 is within the legally mandated range of 800 mm to 1500 mm.

As shown in Figure 1(A), the side shape of the mount 30 of this embodiment is an inverted trapezoid with the top side longer than the bottom side, and the rear side slopes diagonally downward to match the curved shape of the tunnel wall surface 26. The first housing 11a and second housing 11b of the fire hydrant device 10, which are connected to each other, are attached and fixed to the top end surface of the mount 30.

[c. Installation height and thinness of fire hydrant equipment]
The installation height and thinness of the fire hydrant device will be explained in more detail below. In order to reduce the restriction on the passage width caused by the protrusion (projection) of the fire hydrant device 10, which is installed on the road surface of the guard passage 35 by the mount 30, from the tunnel wall surface 26, the installation height of the fire hydrant device 10 is optimized, and at the same time, the fire hydrant device 10 is made as thin as possible.

First, since the installation height of the fire hydrant device 10 is determined by the mounting base 30, we will explain in more detail how to optimize the height H1 of the mounting base 30. Figure 2 shows a schematic diagram of the installation of a fire hydrant device in a tunnel cross section. The tunnel wall 26 on which the fire hydrant device 10 is installed has a circular cross section, and in Figure 2(A), the height H1 of the mounting base 30 is set so that the horizontal housing center line SL2 passing through the height center of the fire hydrant device 10 installed on the monitor passage 35 is as close as possible to the horizontal tunnel center line SL1 from the tunnel center (center of the circular cross section) P.

In this case, the closer the housing center line SL2 is to the tunnel center line SL1, the less the fire hydrant device 10 protrudes from the tunnel wall surface 26.

Figure 2 (B) shows a case where the height H1 of the mount 30 is set so that the housing center line SL2 is aligned with the tunnel center line SL1. In this case, the degree to which the fire hydrant device 10 protrudes from the tunnel wall surface 26 can be minimized. However, the height H1 of the mount 30 should be adjusted as much as possible, taking into account factors such as the ease of removing the fire extinguisher.

Next, the thinning of the fire hydrant device 10 will be explained in more detail. Of the devices housed in the fire hydrant device 10, the fire extinguisher housed in the second housing 11b has the largest front-to-rear size. Therefore, the fire hydrant device 10 can be made thin if the width (thickness in the front-to-rear direction) of the fire hydrant device is the minimum value that allows the fire extinguisher to be housed in the second housing 11b. Therefore, the width of the fire hydrant device 10 is set to a predetermined width that corresponds to the outer diameter of the fire extinguisher housed in the second housing 11b.

The outer diameter of the fire extinguisher is approximately 150 to 160 mm. If a gap is secured to prevent the stored fire extinguisher from coming into contact with the second housing 11b, the minimum width of the fire hydrant device 10 will be, for example, within a range of approximately 180 to 200 mm, and the width of the fire hydrant device 10 will be set to a predetermined width within this range. In contrast, the width of a conventional fire hydrant device 10, which is installed by cutting a box out of the wall of the tunnel body and embedding it in the wall, is approximately 300 mm. Therefore, the width of the fire hydrant device 10 of this embodiment can be reduced to two-thirds of the conventional width, allowing for a thinner fire hydrant device 10.

[d. Configuration compatible with thinner fire hydrant devices]
If the fire hydrant device 10 is thinned to a predetermined width in the range of approximately 180 to 200 mm corresponding to the outer diameter of the fire extinguisher, it becomes difficult to store a fire hose of a predetermined length, for example, a 30 m shape-retaining hose, in an inwardly coiled state in the first housing 11a, as in conventional fire hydrant devices. Therefore, in this embodiment, by increasing the width (width in the left-right direction) of the first housing 11a, it becomes possible to store a shape-retaining hose of the same predetermined length in an inwardly coiled state as in conventional fire hydrant devices.

Furthermore, as the fire hydrant device 10 becomes thinner, it becomes difficult to place the terminal boxes 26a, 26b on the rear surface of the housing behind the fire extinguisher storage section where the fire extinguisher is stored, as in conventional fire hydrant devices 10. Therefore, in this embodiment, the width (length in the left-right direction) of the second housing 11b is expanded to a width that allows for the placement of electrical equipment and terminal boxes in addition to storing the fire extinguisher.

[e. Fire hydrant device stand]
The fire hydrant device mount will be described in more detail. Figure 3 is a perspective view of the mount. The mount 30 is, for example, made by cutting angle bars or the like to a predetermined length and welding them together into a box shape. The angle bars or the like are arranged so that the mount 30 forms an inverted trapezoid in side view, with the top side longer than the bottom side. Mounting holes 31, each paired with a front and rear hole, are formed in three locations along the longitudinal direction of the top surface on the upper end surface of the mount 30. The mounting holes 31 are formed at positions corresponding to the mounting holes on the bottoms of the first housing 11a and the second housing 11b of the fire hydrant device 10. The first housing 11a and the second housing 11B are attached and fixed to the mount 30 by aligning the mounting holes and inserting bolts and nuts into them.

[f. Structure of fire hydrant device with side door]
The structure of the fire hydrant device with a side door will be described in more detail with reference to FIGS.

(f1. Structure of the first housing)
The structure of the first housing 11a will be described in more detail. Reference is made to Fig. 4, which shows the internal structure of the fire hydrant device from the front with the tilt-forward door (fire hydrant door) and maintenance door open; Fig. 5, which shows the internal structure of the fire hydrant device in a cross section viewed from above; Fig. 6, which shows a cross section of the hose storage section of the first housing as viewed from the right side; and Fig. 7, which shows the first side door of the first housing open. Of these, Fig. 5 is a cross section taken along the line a-a in Fig. 4, and Fig. 6 is a cross section taken along the line b-b in Fig. 4. The tilt-forward door 12 in Fig. 6 shows the side view of the door in Fig. 4.

The interior of the first housing 11a, which houses the fire hydrant equipment, is divided into a valve storage section 50a and a hose storage section 50b. A water supply pipe 48 is drawn into the valve storage section 50a from below through the stand 30 and connected to a water hydrant 52. The water supply pipe 48 also branches downward, and at the end of the branch, a fire hydrant valve 54 and an automatic pressure regulating valve 56 are installed, followed by a shape-retaining fire hose 60.

The hydrant valve 54 is opened and closed using a hydrant valve opening/closing lever 58. When the hydrant valve opening/closing lever 58 is opened or closed, the hydrant valve 54 is remotely opened or closed using a known wire link mechanism. Furthermore, when the hydrant valve opening/closing lever 58 is opened or closed, a pump start-up interlocking switch provided on the operation box turns on or off. A pump start switch 64 for use by the fire brigade is also provided on the upper right of the hydrant 52.

A hose storage frame 62 is provided in the hose storage section 50b, and the fire hose 60, pulled in from below, is stored in a clockwise or counterclockwise inward coiled state. The hose storage frame 62 is wider to accommodate the increased width of the first housing 11a that accompanies the slimmer fire hydrant device 10, allowing the same predetermined length of fire hose 60 to be stored with fewer coils than in conventional fire hydrant devices. A nozzle 68 is attached to the tip of the fire hose 60 pulled out through the hose guide 66, and the nozzle 68 is detachably held in a nozzle holder 70.

As shown in Figure 6, a cable rack 49 is provided above the hose storage section 50b to route cables pulled in from outside the first housing 11a, such as cables that have been routed up through the stand 30, to the second housing 11b, and a cable passage opening is provided in the partition wall of the first housing 11a opposite the left end of the cable rack 49.

(f2. Side door of the first housing)
A first side door 32 is provided on the right side of the first housing 11a. As shown in Fig. 5, the first side door 32 is supported so as to be able to open laterally to the right by a hinge 32a whose axis is the vertical direction of the side edge of the right side facing the tunnel wall, and can be opened to a position along the tunnel wall.

As shown in Figure 7, the first side door 32 is supported so as to be able to open sideways by hinges 32a installed at three locations, one above the other, on the tunnel wall side of a side opening 33 formed on the right side of the first housing 11a. A door closing structure is also provided to hold the first side door 32 in the closed position. While any door closing structure is possible, in Figure 7, a through hole 38 is formed in the door and a screw hole 40 is formed in the opening periphery opposite the through hole 38. Door fixing screws can be passed through the through hole 38 and screwed into the screw hole 40, allowing the first side door 32 to be fixed in the closed position.

The first side door 32 is also provided with a door holder that holds the door in an open position along the tunnel side wall. The structure and mechanism of the door holder are optional, but in Figure 7, a stay 36 attached to the top of the door holds the first side door 32 in the open position. By holding the first side door 32 in the open position with the stay 36, when work is performed inside the first housing 11a through the side opening 33, the open first side door 32 does not move and interfere with the work. Note that reinforcing ribs may be placed on the inner surface of the first side door 32 as needed to increase the door strength.

(f3. Structure of the second housing)
The structure of the second housing 11b on the side where the electrical equipment is arranged will be described in more detail below. As shown in Figures 4 and 5, an electrical door 18 that opens laterally to the right on a hinge 18a is arranged in the door opening on the right side of the second housing 11b. The electrical door 18 is arranged with, from top to bottom, a red indicator light 22, a transmitter 24, a telephone jack 28, and an answer lamp 25, and the telephone jack 28 is arranged inside the electrical door 18.

Of the electrical equipment, the red indicator light 22 has the largest longitudinal size in the fire extinguisher storage section 50c inside the second housing 11b, measuring approximately 120 mm. Therefore, even if the fire hydrant device 10 is thinned to a specified width in the range of approximately 180 to 200 mm, each electrical device can be placed while still ensuring sufficient space for the cables pulled in from the first housing 11a.

In addition, an auxiliary door 20 that opens sideways to the left on a hinge 20a is located on the left side of the electrical door 18, and as shown in Figure 4, terminal boxes 26a and 26b are arranged vertically on the rear surface of the second housing 11b facing the auxiliary door 20.

The terminal boxes 26a and 26b are composed of a box body and a lid member, and when placed in the second housing 11b, their dimensions (length (top and bottom) x width (left and right) x depth (front and back)) are approximately 220 mm x 140 mm x 80 mm.

As a result, even if the fire hydrant device 10 is thinned to a specified width in the range of approximately 180 to 200 mm, the depth (front to back) of the terminal boxes 26a and 26b is approximately 80 mm, ensuring sufficient space within the second housing 11b to accommodate the terminal boxes 26a and 26b. Furthermore, because the terminal boxes 26a and 26b are positioned close to electrical equipment such as the red indicator light 22 located on the first door 18, short wiring can be used to connect the terminal boxes 26a and 26b to the electrical equipment.

For this reason, during the assembly of the second housing 11b at the factory, the front of the second housing 11b can be opened by opening the electrical door 18 and auxiliary door 20 to the position shown by the imaginary lines, as shown in Figure 5, making it easy to connect signal lines between the terminal blocks 26a, 26b and the electrical equipment arranged on the electrical door 18.

Furthermore, even when the fire hydrant device 10 is installed inside a tunnel, the electrical door 18 and auxiliary door 20 can be released from their locking position and opened to the position shown by the imaginary lines in Figure 5, making it easy to connect the wiring cable pulled in from the first housing 11a side to the terminal boxes 26a and 26b.

(f4. Storage of fire extinguishers)
The storage of fire extinguishers in the second housing 11b will be described in more detail. As shown in Figures 4 and 5, a space is provided inside the fire extinguisher door 16 of the second housing 11b that can store two fire extinguishers 72 with an outer diameter of approximately 150 to 160 mm. Furthermore, as mentioned above, in order to make the fire hydrant device 10 thinner, the width of the fire hydrant device 10 is set to a predetermined width in the range of 180 to 200 mm, which corresponds to the outer diameter of the fire extinguisher 72. This ensures gaps of approximately 15 to 25 mm in front and behind the stored fire extinguisher 72, allowing the fire extinguisher 72 to be stored without coming into contact with the second housing 11b.

(f5. Side door of second housing)
The side door of the second housing 11b will be described in more detail. A second side door 34 is provided on the left side of the second housing 11b. As shown in Figure 5, the second side door 34 is supported so as to be able to open sideways counterclockwise by a hinge 34a whose axis is the vertical direction of the left side edge of the tunnel wall, and can be opened to a position along the tunnel wall. The second side door 34 differs from the first side door 32 shown in Figure 7 in the direction in which it opens sideways, but other structural aspects are similar, so a detailed description of this will be omitted.

[g. On-site work performed with the side door open]
The on-site work performed by opening the side doors, that is, the on-site work performed by opening the first side door 32 and/or the second side door 34 at the installation site of the fire hydrant device, will be described in more detail.

(g1. Mounting and fixing the housing to the stand)
As shown in FIG. 1, when installing the fire hydrant device 10 in the guard passage 35, first, the stand 30 shown in FIG. 3 is fixed in place at a position abutting or close to the tunnel wall surface 26 above the guard passage 35 using anchor bolts or the like.

Next, the fire hydrant device 10 is placed on the stand 30, suspended by a crane or the like, and the mounting holes 31 on the stand 30 are aligned with the mounting holes on the bottom of the first housing 11a and the second housing 11b, and the device is secured in place by passing bolts through and tightening nuts.

At this time, for the first housing 11a, as shown in Figure 7, the first side door 32 on the right side is opened, and the worker reaches in from the side of the housing through the open door opening 33, aligning the mounting hole 31 in the base 30 closest to the first side door 32 with the mounting hole in the bottom of the first housing 11a, inserting a bolt, and fastening it with a nut. Similarly, the second side door 34 on the left side of the second housing 11b is opened, and the worker reaches in from the side of the housing through the open door opening 33, aligning the mounting hole 31 in the base 30 closest to the second side door 34 with the mounting hole in the bottom of the second housing 11b, inserting a bolt, and fastening it with a nut.

This allows for simple and easy on-site installation and fixing of the first housing 11a and second housing 11b on the stand 30. Furthermore, by opening the first side door 32 and second side door 34, there is no need to open the tilt-forward door 12 or fire extinguisher door 16 as in the past, and there is no obstruction to the guard passage.

(g2. Water supply pipe connection work)
Furthermore, when the first housing 11a is mounted and fixed on the stand 30, it is necessary to connect the primary piping of the water supply valve 52 to the water supply pipe 48 that rises from the road surface of the guard passage 35 into the housing through the stand 30. In this case, too, as shown in Figure 7, the first side door 32 is opened and the worker can reach in from the side of the housing through the opened door opening 33, thereby simply and easily connecting the water supply pipe 48 to the primary piping of the water supply valve 52.

(g3. Cable pulling work)
Furthermore, when the first housing 11a is attached and fixed on the base 30, it is necessary to insert a cable drawn in from the outside into a cable rack 49 formed on the top of the first housing 11a and connect the cable to the terminal blocks in the terminal boxes 26a, 26b arranged in the second housing 11b, as shown in Fig. 6. In this case, too, as shown in Fig. 7, the first side door 32 is opened, and a cable, for example, raised from the guard passage 35 side through the base 30, is inserted into the cable rack 49 through the opened door opening 33, and the cable is drawn out toward the terminal blocks 26a, 26b, which can be easily and simply done by an operator by inserting his or her hand through the side opening 33.

(g4. Inspection and repair work during operation)
Furthermore, when periodic inspections of the fire hydrant device 10 are conducted during tunnel operation, inspection of the fire hydrant devices, such as the hydrant valve 54 and the automatic pressure regulating valve 56, arranged inside the first housing 11a can be simply and easily performed by opening the first side door 32, as shown in Fig. 7. Furthermore, if a malfunction occurs in the fire hydrant devices, such as the fire hydrant valve 54 and the automatic pressure regulating valve 56, as shown in Fig. 5, opening the first side door 32 can simply and easily perform work such as replacement or repair.

[h. Other embodiments of the side door]
Other embodiments of the side door will be described in more detail. The other embodiments of the side door can be divided into a front-opening side door and a top-opening side door.

(h1. Front-opening side door)
The front-opening side door will be described in more detail with reference to Figure 8, which shows a cross section of the internal structure of the fire hydrant device as viewed from above, and Figure 9, which shows the first side door of the first housing open.

As shown in Figure 8, the first side door 32 provided on the right side of the first housing 11a is supported so as to be able to open sideways in a clockwise direction by a hinge 32a whose axis is the vertical direction of the side edge of the right side facing the road (nearby), and can be opened to a position along the front of the first housing 11a.

As shown in Figure 9, the first side door 32 is supported so as to be freely opened sideways by hinges 32a installed at three locations, one above the other, on the road-facing (front) side edge of a side opening 33 formed on the right side of the first housing 11a. A door closing structure is also provided to hold the first side door 32 in the closed position. While any door closing structure is possible, in Figure 9, a through hole 38 is formed in the door and a screw hole 40 is formed in the opening periphery opposite the through hole 38. Door fixing screws are threaded into the through holes 38 and the screw holes 40, allowing the first side door 32 to be fixed in the closed position.

The first side door 32 is also provided with a door holder that holds the door in an open position along the front surface of the housing. The structure and mechanism of the door holder are arbitrary, but in Fig. 9, magnets 42 are disposed at two locations, one above and one below, on the open end of the first side door 32, and the first side door 32 is held in the open position by magnetic attraction to the decorative frame 13a. By holding the first side door 32 in the open position by magnetic attraction of the magnets 42 in this way, when a worker performs work inside the first housing 11a through the side opening 33, the open first side door 32 does not move and interfere with the work. If the decorative frame 13a is made of a material that is not magnetically attracted, a magnetically attractable member may be placed on the decorative frame 13a at a position corresponding to the magnet 42 of the open first side door 32. The second side door 34 provided on the left side of the second housing 11b is supported so as to be able to open sideways counterclockwise by a hinge 34a whose axis is the vertical direction of the side edge of the left side facing the road (front side), as shown in Fig. 8, and can be opened to a position along the front of the housing. The second side door 34 differs from the first side door 32 shown in Fig. 9 in the direction in which it opens sideways, but other structural aspects are similar, so a detailed description thereof will be omitted.

(h2. Side door with top-opening structure)
The upward-opening side door will be described in more detail with reference to Figure 10, which shows the first side door of the first housing open.

As shown in FIG. 10 , the first side door 32 provided on the right side of the first housing 11a is supported so as to be freely openable upward by, for example, hinges 32a installed at two locations in the front-to-rear direction at the upper end of a side opening 33 formed on the right side of the first housing 11a. A door closing structure is also provided to hold the first side door 32 in the closed position. While any door closing structure is possible, for example, the first side door 32 can be fixed in the closed position by forming a through hole 38 on the door side, forming a screw hole 40 on the periphery of the opening opposite the through hole 38, and threading a door fixing screw through the through hole 38 and into the screw hole 40.

The first side door 32 is also provided with a door holder that holds the door in an open position, either diagonally upward or horizontally relative to the top surface of the housing. The structure and mechanism of the door holder are optional, but in Figure 10, the door is held in the open position by a stay 36 provided on the inside of the door, which faces the tunnel wall. Note that the open first side door 32 may not be held in the open position by the stay 36, and the first side door 32 may be rotated to the open position resting on the top surface of the first housing 11a.

The second side door 34 provided on the left side of the second housing 11b, like the first side door 32 in Figure 10, is supported so as to be freely opened upward by hinges installed at two locations in the front-to-rear direction at the upper end of the side opening formed on the right side of the second housing 11b, and is held in the open position by a stay installed on the inside of the door facing the tunnel wall. Alternatively, the door may be opened to a position where it rests on the top surface of the second housing 11b without being held in place by a stay.

[i. Modifications of the present invention]
Modifications of the fire hydrant device according to the present invention will be described. In addition to the above-described embodiment, the fire hydrant device of the present invention includes the following modifications.

(Wall-mounted fire hydrant device)
The above embodiment has been given as an example of a fire hydrant device with a stationary structure in which the housing is attached and fixed to the top of a stand installed on the road surface of the guard passage close to the tunnel wall, but this is not limited to this. Similarly, a wall-mounted fire hydrant device in which the housing is attached and fixed to the front part on the road side of a stand installed on the tunnel wall above the road surface of the guard passage may also be used, in which a side door is provided on the side of the housing and the side door can be opened to allow work inside the housing from the outside side.

(Fire hydrant equipment)
In the above embodiment, the fire extinguisher is stored in the second housing, but the fire extinguishing device may also have a structure in which an electrical door and an auxiliary door are provided at the front opening and a terminal box is provided inside the housing without providing a fire extinguisher storage section in the second housing.In this case, too, a first side door is provided on a side other than the connecting side of the first housing that stores the fire hydrant equipment, and a second side door is provided on a side other than the connecting side of the second housing.

(If the tunnel wall has a cross section other than a circular cross section)
In the above embodiment, the tunnel cross-sectional shape is circular, but if the tunnel cross-section is other than circular, such as a tricentric circle, the present invention can be applied by taking the horizontal line at the position where the horizontal width of the tunnel cross-sectional shape is widest as the tunnel center line SL1 in the above explanation.

(Fire hydrant device structure compatible with thinning)
In the fire hydrant device in the above embodiment, the width of the first and second housings is increased to accommodate the reduction in thickness of the fire hydrant device, thereby ensuring the internal volume that would have been reduced by the reduction in thickness. However, the vertical width of the first and second housings may also be increased to ensure the internal volume that would have been reduced by the reduction in thickness.

(When water supply piping and cables are installed from the side)
In the above embodiment, the water supply pipes are set up and the cables are pulled in from the bottom of the first housing, but if they are done from the side of the first housing, that part is made up of a fixed plate and the side door is placed in the part excluding the fixed plate.

(others)
Furthermore, the present invention includes appropriate modifications that do not impair the objects and advantages thereof, and is not limited to the numerical values shown in the above embodiments.

10: Fire hydrant device 11a: First housing 11b: Second housing 12: Forward tilting doors 13a, 13b: Decorative frame 14: Maintenance door 16: Fire extinguisher door 17: Viewing window 18: Electrical door 20: Auxiliary door 22: Red indicator light 24: Transmitter 25: Response lamps 26a, 26b: Terminal box 28: Telephone jack 30: Stand 32: First side door 32a, 34b: Hinge 33: Side opening 34: Second side door 35: Supervisor passage 36: Stay 3 8: Through hole 40: Screw hole 42: Magnet 46: Road 48: Water supply pipe 49: Cable rack 50a: Valve storage section 50b: Hose storage section 50c: Fire extinguisher storage section 52: Water supply hydrant 54: Fire hydrant valve 56: Automatic pressure regulating valve 58: Fire hydrant valve opening/closing lever 60: Fire hose 62: Hose storage frame 64: Pump start switch 66: Hose guide 68: Nozzle 70: Nozzle holder 72: Fire extinguisher

Claims (5)

A fire hydrant device in which a housing is installed close to or in contact with a tunnel wall at a predetermined height above the road surface of a guard passage provided along the wall of a tunnel having a road,
a side door supported on a side surface of the housing so as to be able to open upward from bottom to top on the side surface of the housing with the upper end of the side opening of the housing in the front-rear direction as an axis ;
A fire hydrant device characterized in that the side door can be opened to allow work inside the housing to be performed from the outside of the side.
The fire hydrant device according to claim 1,
The housing includes:
A first housing in which the fire hydrant device is housed and a second housing in which the fire extinguisher and the electrical device are housed are connected in a side direction,
a first side door is provided on a side surface of the first housing excluding the connecting side surface, and a second side door is provided on a side surface of the second housing excluding the connecting side surface;
A fire hydrant device characterized in that the first side door can be opened to allow work on the fire hydrant equipment from the outside of the side, and the second side door can be opened to allow work on the fire extinguisher and the electrical equipment from the outside of the side.
The fire hydrant device according to claim 1 or 2 ,
The fire hydrant device is characterized in that the side door is provided with an open holding portion that holds the side door in an open position.
The fire hydrant device according to any one of claims 1 to 3 ,
The fire hydrant device is characterized in that the housing is attached and fixed to the top of a stand installed on the road surface of the guard passage, close to the tunnel wall.
The fire hydrant device according to any one of claims 1 to 3 ,
The fire hydrant device is characterized in that the housing is attached and fixed to the front part of a platform installed on the tunnel wall above the road surface of the monitor passage, on the road side.