Fire hydrant system

Abstract

To enable water supply piping to be pulled in from the outside and connected without increasing an installation space or restricting approach around a device.SOLUTION: A fire hydrant device 10 is installed at a predetermined height above a road surface of a watchman's passage 30 provided along a wall surface of a tunnel, close to or abutting against the tunnel wall surface, for example, with a trestle 28. The fire hydrant device 10 includes a first housing 11a in which fire hydrant equipment is stored and arranged, and a second housing 11b in which a fire extinguisher and electrical equipment are stored and arranged. A hose storage part 42 is arranged on a lateral side inside the first housing 11a, and a valves storage part 40 is arranged on a second housing 11b side inside the first housing 11a. Water supply piping 31 taken out on the road surface of the watchman's passage 30 is connected to valve piping 44 after being led in from a piping passing part at a predetermined position of a housing bottom part of the valves storage part 40 passing vertically through an empty region inside the trestle 28 by lead-in piping 32.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a fire hydrant device installed so as to be exposed in a monitor passage provided along a tunnel wall surface.

Background Art

[0002] Conventionally, fire hydrant devices have been installed in tunnels such as highways and motorways as emergency facilities in tunnels. For example, the fire hydrant device includes a fire hose with a water discharge nozzle attached to the tip and valves including a fire hydrant valve stored in a fire hydrant storage section inside a housing equipped with a forward-tilting fire hydrant door (forward-tilting door), and two fire extinguishers are stored in a fire extinguisher storage section inside a housing equipped with a fire extinguisher door. In addition, the fire hydrant device is generally installed by cutting out a tunnel wall surface provided with a monitor passage at intervals of, for example, 50 meters in the longitudinal direction of the tunnel and embedding it (Patent Document 1).

[0003] However, in a tunnel constructed by a shield method or the like, due to the structure of the tunnel body, it is difficult to cut out the tunnel wall surface and embed the fire hydrant device in terms of cost and labor. Therefore, it is required to install the fire hydrant device in a state of being exposed in the monitor passage.

[0004] Therefore, as a structure for installing the fire hydrant device in a state of being exposed in the monitor passage without cutting out the tunnel wall surface, a wall-mounted structure has been proposed in which a gantry is installed on the tunnel wall surface and the fire hydrant device is attached and fixed to the installed gantry. The gantry of the wall-mounted structure is composed of a main support portion fixed to the wall surface and a posture holding member that holds the posture of the fire hydrant device (Patent Document 2).

[0005] However, the installation of the fire hydrant device by the wall-mounted structure has problems such as taking time and labor for attaching the fire hydrant device to the tunnel wall surface. Therefore, it is considered to adopt a so-called standing structure in which a gantry is installed on the road surface of the monitor passage where installation is easy, and the fire hydrant device is attached and fixed to the installed gantry.

[0006] Incidentally, in the conventional fire hydrant system shown in Patent Document 1, a water supply pipe is raised from the outside of the side of the fire hydrant storage section inside the housing where the fire hoses and valves are housed. The water supply pipe is then routed through the side of the housing into the housing and connected to the piping in the valve storage section. Similarly, in the wall-mounted and freestanding fire hydrant systems shown in Patent Document 2, a water supply pipe is raised from the outside of the side of the fire hydrant storage section inside the housing. The water supply pipe is then routed through the side of the housing into the housing and connected to the piping in the valve storage section. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2009-279294 [Patent Document 2] Japanese Patent Publication No. 2019-000196 [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] However, in conventional fire hydrant systems where the water supply piping is routed through the side of the casing and connected to the piping of the valve casing, such as wall-mounted or freestanding fire hydrant systems installed exposed on the road surface of a supervisor's walkway, the water supply piping is largely exposed and conspicuous on the outside of the casing. Compared to conventional wall-embedded fire hydrant systems where the water supply piping is not exposed, this significantly detracts from the appearance and makes the system look unsightly. Furthermore, it may give the impression that the system is not functioning properly, such as during construction, and that its functionality may not be fully realized.

[0009] Furthermore, the water supply piping, which is exposed on the outside of the side of the fire hydrant system, increases the width of the installation space. This protrusion of the water supply piping restricts access around the fire hydrant system and can obstruct the access route used by supervisors for inspection or evacuation.

[0010] The present invention aims to provide a fire hydrant system that allows water supply piping to be brought in and connected from the outside without increasing the installation space or restricting access to the area around the device. [Means for solving the problem]

[0011] (Fire hydrant system) The present invention relates to a fire hydrant device installed at a predetermined height above the road surface of a monitoring walkway provided along the wall of a tunnel having a road, and installed in close proximity to or in contact with the tunnel wall, A first enclosure in which fire hydrant equipment is housed or installed, A second enclosure is positioned adjacent to one side of the first enclosure and houses or installs fire extinguishers and electrical equipment. Located inside the other side of the first enclosure is a hose storage compartment where a fire extinguishing hose is stored, A valve storage section is located inside one side of the first enclosure, and is equipped with predetermined valves, including a fire hydrant valve, on a pipe to which a fire extinguishing hose is connected. It is characterized by having the following features.

[0012] (Water supply piping routed into the bottom of the enclosure) A pipe passage is formed at a predetermined position on the bottom of the first housing. The water supply piping, which is brought out from beneath the road surface of the monitoring staff passage to the road surface, passes vertically through the empty space on the lower side of the first housing, is then drawn into the first housing through the pipe passage section, and is connected to the aforementioned piping in the valve housing section.

[0013] (Water supply piping that crosses the empty space on the underside of the enclosure and is routed to the bottom of the enclosure) A pipe passage is formed at a predetermined position on the bottom of the first housing. The water supply piping, which is brought out from beneath the road surface of the monitoring staff passage to the road surface, passes laterally through the empty space below the first housing or from below the second housing to the empty space below the first housing, and is then drawn into the first housing through the pipe passage and connected to the piping in the valve housing.

[0014] (Fire hydrant door and maintenance door) The first cabinet is, Below the door opening in the front of the housing, there is a fire hydrant door that rotates vertically around an axis at the lower end side with respect to the road surface of the inspector passage and opens to an open position where the door surface is perpendicular to the road surface of the inspector passage, and Above the door opening in the front of the housing, there is a maintenance door that rotates vertically around an axis at the upper end side with respect to the road surface of the inspector passage and opens. It is provided with.

[0015] (Operation object and proper operation range of the first housing) The first housing houses or installs a predetermined operation object, The predetermined operation object is arranged at a height that falls within the proper operation range from the standing surface of legally defined road users.

[0016] (Specific examples of operation objects of the first housing) The predetermined operation objects of the first housing include the opening and closing handle of the fire hydrant door, the water discharge nozzle connected to the fire hose, the opening and closing operation part of the fire hydrant valve, the water supply faucet to which the hose of the fire brigade is connected from the outside, and the fire pump start switch.

[0017] (Operation object and proper operation range of the second housing) The second housing houses and arranges a predetermined operation object, The predetermined operation object is arranged at a height that falls within the proper operation range from the standing surface of legally defined road users.

[0018] (Specific examples of operation objects of the second housing) The predetermined operation objects of the second housing include the opening and closing handle of the fire extinguisher door, the operation part of the fire extinguisher (the handle lever of the fire extinguisher), and the operation part of the electrical equipment.

[0019] (Proper operation range) The proper operation range is the range from 800 mm to 1500 mm above the road surface of the inspector passage where road users stand.

[0020] (Installation by the pedestal) The first and second enclosures are installed on a frame placed on the road surface of the monitoring walkway, at a predetermined height above the road surface of the monitoring walkway, in close proximity to or in contact with the tunnel wall. [Effects of the Invention]

[0021] (Effectiveness of fire hydrant systems) The present invention relates to a fire hydrant system installed at a predetermined height above the road surface of a monitoring walkway provided along the wall of a tunnel having a road, in close proximity to or in contact with the tunnel wall, comprising: a first housing in which fire hydrant equipment is housed or installed; a second housing located adjacent to one side of the first housing in which a fire extinguisher and electrical equipment are housed or installed; a hose storage section located inside the other side of the first housing in which a fire hose is housed; and valves located inside the one side of the first housing in which predetermined valves, including a fire hydrant valve, are installed on the piping to which the fire hose is connected. Because it is equipped with a storage compartment, the valve storage compartment is located on the central side of the housing (the second housing side) rather than on the side of the housing as in conventional fire hydrant systems. As a result, when drawing water supply piping to the valve storage compartment from the outside, it is necessary to do so from the bottom of the first housing. The water supply piping is drawn in from an inconspicuous place at the bottom of the housing, so as not to spoil the appearance of the fire hydrant system, and the width of the fire hydrant system is reduced, reducing restrictions on access around the device, and it can be said that it hardly gets in the way when a monitoring passage is used for inspection or evacuation.

[0022] Furthermore, because the hose storage compartment is located on the side of the first enclosure (the side furthest from the second enclosure), the worker can easily perform the task of winding the fire hose back into the storage compartment, which is part of the recovery work after using the fire hydrant, by utilizing the available space on the outside of the enclosure's side.

[0023] Furthermore, by positioning the valve housing on the side of the first housing closer to the second housing, the distance between the pump start switch and pump start interlock switch located in the valve housing and the terminal box and electrical equipment installed in the second housing is reduced, making it possible to shorten the length of the internal wiring connecting them.

[0024] (Effect of water supply piping routed into the bottom of the enclosure) Furthermore, a pipe passage is formed at a predetermined position at the bottom of the first enclosure, and the water supply pipe, which is brought out from below the road surface of the monitoring walkway to the road surface, passes vertically through the open area on the lower side of the first enclosure, is then pulled into the first enclosure through the pipe passage and connected to the piping of the valve storage area. Therefore, if the pipe passage formed at a predetermined position at the bottom of the enclosure of the valve storage area is located directly above the water supply pipe brought out from the monitoring walkway, the water supply pipe can be connected to the piping of the valve storage area via the shortest distance, making the water supply pipe connection work simple and easy. In addition, the piping work of pulling the water supply pipe into the enclosure and connecting it is performed in the open space on the lower side of the enclosure, making it easy and efficient to do so.

[0025] (Effect of the water supply piping that crosses the empty space on the underside of the enclosure and is routed to the bottom of the enclosure) Furthermore, a pipe passage is formed at a predetermined position at the bottom of the first enclosure, and the water supply pipe, which is brought out from below the road surface of the monitoring walkway onto the road surface, passes laterally through the empty space below the first enclosure or from below the second enclosure to the empty space below the first enclosure, before being pulled into the first enclosure through the pipe passage and connected to the pipe in the valve storage section. Therefore, if the pipe passage formed at a predetermined position at the bottom of the valve storage section is not located directly above the water supply pipe brought out from the monitoring walkway, the water supply pipe can be brought in through the pipe passage at the bottom of the enclosure after passing it laterally through the empty space below the enclosure. This allows the water supply pipe to be brought in and connected to the pipe in the valve storage section even if the exit position on the monitoring road surface and the entry position at the bottom of the enclosure are different, by passing the water supply pipe laterally within the empty space below the enclosure, thus aligning its position and making the water supply pipe connection work easy and convenient. In addition, the pipe work of bringing the water supply pipe into the enclosure and connecting it is performed in the open space below the enclosure, making it easy and efficient.

[0026] (Effects of fire hydrant doors and maintenance doors) Furthermore, the first enclosure is equipped with a fire hydrant door located below the door opening on the front of the enclosure, which rotates perpendicularly to the road surface of the guardian's passage on its lower end as an axis, and a maintenance door located above the door opening on the front of the enclosure, which rotates perpendicularly to the road surface of the guardian's passage on its upper end as an axis, and opens. As a result, when a road user opens the fire hydrant door, the fire hydrant valve opening / closing operation unit, for example, the fire hydrant valve opening / closing lever, is located in an easily visible position in front of the hose storage unit located on the lower inside of the enclosure. This allows the user to easily open the fire hydrant valve opening / closing lever and pull out the fire hose while discharging water from the nozzle when removing the water nozzle and pulling out the fire hose. In addition, inspections and repairs of fire hydrant valves and other components located in the valve storage unit above the hose storage unit can be performed appropriately and easily by opening the maintenance door.

[0027] (Effects of the operating target and appropriate operating range of the first enclosure in which fire hydrant equipment is housed) Furthermore, the first enclosure houses or installs a predetermined operating object, and the predetermined operating object is positioned at a height that falls within the appropriate operating range from the standing surface of road users as legally defined. This allows road users to pull out the fire hose when using the fire hydrant system while standing on the road surface of the monitoring walkway, and allows recovery workers to rewind the fire hose after use, without having to stand too high or too low, and to operate the device appropriately in a comfortable posture.

[0028] (Effectiveness of the target of operation and appropriate protection range of the first enclosure) Furthermore, the designated operating objects of the first enclosure include the opening and closing handle for the fire hydrant door, the water nozzle connected to the fire hose, the opening and closing operation part for the fire hydrant valve, the water tap to which the fire brigade's hose is connected from the outside, and the fire pump activation switch. Since these operating objects are positioned to be within the appropriate operating range, road users standing on the surface of the monitoring walkway can properly operate the opening and closing handle for the fire hydrant door, the water nozzle, and the opening and closing operation part for the fire hydrant valve in a comfortable posture without being too high or too low. Similarly, firefighters can properly operate the connection of the hose to the water tap, the opening of the tap, and the fire pump activation switch.

[0029] (Effects of the operating targets and appropriate operating range of the second enclosure, which houses and arranges fire extinguishers and electrical equipment) Furthermore, the second enclosure houses and positions the designated operating objects, which are positioned at a height that falls within the legally defined appropriate operating range from the standing position of road users. The designated operating objects in the second enclosure include the opening and closing handle for the fire extinguisher door, the operating part of the fire extinguisher (the lever handle of the fire extinguisher), and the operating part of the electrical equipment. Therefore, the fire extinguisher and electrical equipment housed in the second enclosure also have lever handles that road users grasp when taking out the fire extinguisher, and transmitters provided as electrical equipment, all within the appropriate operating range. This ensures that when road users stand on the road surface of the monitoring walkway to take out a fire extinguisher, it is neither too high nor too low, allowing them to safely take out the fire extinguisher in a comfortable posture without dropping it. Similarly, when operating the transmitter, it is neither too high nor too low, allowing for proper operation.

[0030] (Effect of proper operating range) Furthermore, the appropriate operating range is from 800mm to 1500mm above the road surface of the monitoring walkway where road users stand. This ensures that road users can operate the device easily and reliably in a comfortable posture without the device being too high or too low.

[0031] (Effects of installation using a mounting frame) Furthermore, since the first and second enclosures are installed on a frame placed on the road surface of the monitoring walkway, at a predetermined height above the road surface of the monitoring walkway, close to or in contact with the tunnel wall, the lower part of the enclosure through which the water supply pipes are routed becomes the internal area of ​​the frame. This ensures a sufficiently large open space for the water supply pipes, making it easy to carry out the piping work of routing and connecting the water supply pipes. In addition, by providing a cover on the front side of the frame through which the water supply pipes pass, the water supply pipes can be easily concealed, improving the appearance. [Brief explanation of the drawing]

[0032] [Figure 1] This is an explanatory diagram showing a front view of an embodiment of a fire hydrant system installed on the road surface of a supervisory walkway. [Figure 2] Figure 1 is an explanatory diagram showing the fire hydrant system from the left side. [Figure 3] Figure 1 is an explanatory diagram showing the internal structure of the fire hydrant storage section of the fire hydrant system, viewed from the front with the front of the housing open. [Figure 4] Figure 1 is an explanatory diagram showing a cross-sectional view of the internal structure of the fire hydrant system, where the fire hydrant equipment is located, as seen from the right side. [Figure 5] Figure 1 is an explanatory diagram showing the fire hydrant system from the front with the fire hydrant door open. [Figure 6] This is an explanatory diagram showing a first embodiment of the fire hydrant door opening and closing mechanism, viewed in cross-section from the right side of the fire hydrant device. [Figure 7] This is an explanatory diagram showing the rotating door opening and closing mechanism when the fire hydrant door is opened 90 degrees. [Figure 8] This is an explanatory diagram showing the rotating door opening and closing mechanism when the fire hydrant door is opened 180°. [Figure 9] This is an explanatory diagram showing a second embodiment of the fire hydrant door opening and closing mechanism, viewed in cross-section from the right side of the fire hydrant device. [Modes for carrying out the invention]

[0033] Embodiments of the fire hydrant device according to the present invention will be described below with reference to the drawings. However, the present invention is not limited to the following embodiments.

[0034] [Basic Concepts of the Embodiment] First, the basic concept of the embodiment will be explained. The embodiment generally relates to a fire hydrant device that is installed exposed on a monitoring walkway provided along the tunnel wall.

[0035] Here, "fire hydrant system" refers to a type of emergency equipment installed in areas such as tunnels on expressways and motorways that are subject to fire suppression. It includes or houses fire hydrant equipment such as fire hoses, electrical equipment such as red indicator lights and transmitters, terminal boxes, and fire extinguishers, and is a concept that includes fire hydrant facilities where a fire hydrant system is installed.

[0036] Furthermore, the fire hydrant system of the embodiment is installed at a predetermined height above the road surface of a monitoring walkway provided along the tunnel wall, so as to be close to or in contact with the tunnel wall, and includes fire hydrant systems installed by a "wall-mounted structure" or "freestanding structure" in which the fire hydrant system is exposed to the monitoring walkway.

[0037] As explained in the background technology section, the "wall-mounted structure" is a structure that allows the fire hydrant system to be installed on the tunnel wall by installing a frame on the tunnel wall and attaching and fixing the fire hydrant system to the installed frame. The "freestanding structure" is a structure that allows the fire hydrant system to be installed on the road surface of the monitoring walkway by installing a frame on the road surface of the monitoring walkway and attaching and fixing the fire hydrant system to the installed frame.

[0038] Furthermore, "framework" refers to a structure that supports objects using columns and beams, and includes concepts such as support base, foundation, base, pedestal, and base. Also, "installed in close proximity to or in contact with the tunnel wall" includes installing in close proximity to the tunnel wall, installing with part of it in contact with the tunnel wall, or installing with part of it fixed to the tunnel wall.

[0039] The fire hydrant system of the embodiment comprises a first housing in which the fire hydrant equipment is housed or installed, a second housing located adjacent to one side of the first housing in which the fire extinguisher and electrical equipment are housed or installed, a hose storage section located inside the other side of the first housing in which the fire hose is housed, and a valve storage section located inside the one side of the first housing in which predetermined valves, including a fire hydrant valve, are arranged in the piping to which the fire hose is connected.

[0040] In this embodiment, the valve housing is located on the central side of the housing (second housing side) rather than on the side of the housing as in conventional fire hydrant systems. As a result, the connection of the water supply piping from the outside to the valve housing is necessarily made by connecting the water supply piping that is drawn in from the bottom of the first housing. The water supply piping is drawn in from an inconspicuous place at the bottom of the housing, so as not to spoil the appearance of the fire hydrant system, and the width of the fire hydrant system is reduced, reducing restrictions on access around the device, and it can be said that it hardly gets in the way when a monitoring passage is used for inspection or evacuation.

[0041] Furthermore, because the hose storage compartment is located on the side of the first enclosure (the side furthest from the second enclosure), the operator can use the available space on the outside of the enclosure to wind the fire hose back into the storage compartment, which is part of the recovery work after using the fire hydrant, making the work easier.

[0042] Furthermore, by positioning the valve housing on the side of the first housing closer to the second housing, the distance between the pump start switch and pump start interlock switch located in the valve housing and the terminal box and electrical equipment installed in the second housing is reduced, making it possible to shorten the length of the internal wiring connecting them.

[0043] Furthermore, while the structure for connecting the water supply piping from the outside to the valve storage area of ​​the first housing is optional, for example, a pipe passage is formed at a predetermined position at the bottom of the first housing, and the water supply piping, which is brought out from below the road surface of the monitoring staff passage to the road surface, passes vertically through the empty area on the lower side of the first housing, is then pulled into the first housing through the pipe passage and connected to the piping in the valve storage area.

[0044] Therefore, if the pipe passage formed at a predetermined position on the bottom of the housing of the valve storage unit is located directly above the water supply pipe that is taken out from the monitoring staff passage, the water supply pipe can be connected to the piping of the valve storage unit via the shortest distance, making the water supply pipe connection work easy and convenient. In addition, the piping work of pulling the water supply pipe into the housing and connecting it can be done easily and efficiently because it is performed in the open space on the lower side of the housing.

[0045] Furthermore, the water supply piping, which is brought out from below the road surface of the monitoring walkway onto the road surface, passes laterally through the empty space below the first housing or from below the second housing to the empty space below the first housing, and is then pulled into the first housing through the pipe passage and connected to the piping of the valve storage unit. This piping connection structure is used when the pipe passage formed at a predetermined position on the bottom of the housing of the valve storage unit is not located directly above the water supply piping brought out from the monitoring walkway onto the road surface. In this case, the water supply piping is passed laterally through the empty space below the housing and then pulled into the housing through the pipe passage at the bottom of the housing for connection. Therefore, even if the position of the water supply piping coming out on the monitoring road surface and the position of the pipe passage at the bottom of the housing are different, the water supply piping can be passed laterally within the empty space below the housing to align its position and connect to the piping of the valve storage unit. In addition, the piping work of passing the water supply piping laterally through the empty space below the housing and then pulling it into the housing for connection is performed in the open space below the housing, making it easy and efficient to do so.

[0046] The front door opening of the first enclosure is equipped with a "fire hydrant door" and a "maintenance door." The opening and closing structure of the "fire hydrant door" and the "maintenance door" is arbitrary, but for example, the "fire hydrant door" is designed to rotate perpendicularly (downward) around its lower end as an axis to the road surface of the monitoring walkway, opening to an open position where the door surface is perpendicular to the road surface of the monitoring walkway. Therefore, when a road user opens the fire hydrant door, the fire hydrant valve opening and closing operation part, for example, the fire hydrant valve opening and closing lever, is positioned in an easily visible location inside the opened fire hydrant door, and the water discharge nozzle is also held in place. This allows the user to easily open the fire hydrant valve opening and closing lever and pull out the fire hose while discharging water from the nozzle.

[0047] Furthermore, the "maintenance door" is designed to open by rotating vertically (upward) around the upper end of the door opening on the front of the enclosure, with the upper end as the axis, relative to the surface of the supervisor's passageway. This allows for proper and easy inspection and repair by the supervisor of fire hydrant valves and other equipment located in the valve storage area above the hose storage area by opening the maintenance door.

[0048] Furthermore, the "first enclosure" houses or installs a predetermined operating object, which is positioned at a height that falls within the legally defined appropriate operating range from the standing surface of road users.

[0049] Here, the "legally defined appropriate operating range" refers to the range from 800 mm to 1500 mm above the road surface of the monitoring walkway where road users stand, ensuring that road users can operate the target object easily and reliably in a comfortable posture without the height being too high or too low.

[0050] Therefore, when road users stand on the road surface of the monitoring walkway to use the fire hydrant system, they can pull out the fire hose, and when restoration workers rewind the fire hose after use, they can operate it properly in a comfortable posture without being too high or too low.

[0051] Here, "the designated operating objects of the first enclosure" include the opening and closing handle of the fire hydrant door, the water discharge nozzle connected to the fire hose, the opening and closing operation part of the fire hydrant valve, the water tap to which the fire brigade's hose is connected from the outside, and the fire pump activation switch. Because these operating objects are positioned to fall within the appropriate operating range, road users standing on the surface of the monitoring walkway can properly operate the opening and closing handle of the fire hydrant door, the water discharge nozzle, and the opening and closing operation part of the fire hydrant valve in a comfortable posture without being too high or too low. Furthermore, firefighters can properly operate the connection of the hose to the water tap, the opening of the tap, and the fire pump activation switch.

[0052] Furthermore, the "second enclosure" houses and positions a predetermined operating object, which is positioned at a height that falls within the legally defined appropriate operating range from the standing surface of road users.

[0053] Here, "the specified operating targets of the second enclosure" include the opening and closing handle of the fire extinguisher door, the operating section of the fire extinguisher (the lever handle of the fire extinguisher), and the operating section of the electrical equipment.

[0054] Therefore, with regard to the fire extinguishers and electrical equipment housed or installed in the second enclosure, the lever handle that road users grasp when taking out the fire extinguisher and the transmitter provided as electrical equipment are within the appropriate operating range. This allows road users to safely take out the fire extinguisher without dropping it, in a comfortable posture, without it being too high or too low, when standing on the road surface of the monitoring walkway. Similarly, it allows for proper operation of the transmitter without it being too high or too low.

[0055] The following describes a specific embodiment. In the specific embodiment shown below, we will describe a case in which the fire hydrant device is positioned on a stand at a predetermined height above the road surface of the guardian's walkway, in a "stationary structure".

[0056] [Specific details of the embodiment] This section describes an embodiment of a fire hydrant system. The details are explained in the following sections. a. Overview of fire hydrant systems b. Installation of fire hydrant system c. Miniaturization of fire hydrant systems d. Internal structure of a fire hydrant system d1. Valve storage compartment d2. Hose storage compartment e. Installation height of fire hydrant system f. Door opening and closing mechanism for fire hydrant doors f1. First embodiment of a fire hydrant door opening and closing mechanism f2. Second embodiment of the fire hydrant door opening and closing mechanism g. Modified form of the present invention

[0057] [a. Overview of fire hydrant systems] This section will describe the overview of the fire hydrant system. In this explanation, we will refer to Figure 1, which shows an embodiment of the fire hydrant system installed on the road surface of the supervisor's walkway, viewed from the front.

[0058] In the explanation of Figure 1, the X, Y, and Z directions are mutually orthogonal. Specifically, when viewing the front of the fire hydrant device 10, the X direction is the left-right direction, the Y direction is the up-down direction, and the Z direction is the front-back direction. Furthermore, in the X direction, the +X side is the right side and the -X side is the left side; in the Y direction, the +Y side is the upper side and the -Y side is the lower side; and in the Z direction, the +Z side is the front side and the -Z side is the rear side. This is the same in Figures 2 to 9, which represent embodiments of the present invention.

[0059] As shown in Figure 1, the fire hydrant device 10 is installed on a frame 28 that is installed on the road surface of the guardian's walkway 30, and the housing of the fire hydrant device 10 is divided into a first housing 11a and a second housing 11b.

[0060] A decorative frame 13a is attached to the front of the first enclosure 11a. Below the door opening 15 of the decorative frame 13a, a fire hydrant door 12 is positioned so that when the lock is released by operating the door opening / closing handle 1210, it opens vertically (downward) around its lower end by a hinge 12a, at a position perpendicular to the road surface of the supervisor's passage 30.

[0061] A maintenance door 14 is positioned above the door opening 15 of the decorative frame 13a, which opens upward on its upper end by a hinge 14a. The upward-opening maintenance door 14 is held open by a stay (support rod) located on the inside of the door.

[0062] As will be described later, the fire hydrant storage section inside the first housing 11a has a hose storage section on the right side for storing fire hoses, and a valve storage section on the left side, which is in the center of the housing, for storing valves such as fire hydrant valves.

[0063] A decorative frame 13b is attached to the front of the second enclosure 11b. An electrical door 18 that opens to the right on the right side of the decorative frame 13b is positioned on the right side of the door opening, and an auxiliary door 20 that opens to the left on the left side, allowing access to the internal terminal boxes 26a and 26b, is positioned on the left side of the electrical door 18 that opens to the left on the left side, by a hinge 20a.

[0064] In this embodiment, the storage space for electrical equipment is expanded by the placement of the auxiliary door 20, and it is possible to place the terminal boxes 26a and 26b, which were conventionally located on the rear interior of the fire extinguisher storage section, on the rear interior of the auxiliary door 20.

[0065] The electrical door 18 is equipped with electrical equipment such as a red indicator light 22, a transmitter 24, and a response lamp 25, and a telephone jack is provided on the inside of the door. The red indicator light 22 is always lit so that the location of the fire hydrant device 10 can be confirmed from a distance. The transmitter 24 transmits a signal when it is pressed and switched on, for example in the event of a fire, and a fire alarm is output from a fire prevention receiving panel installed in the electrical room, etc. Upon receiving the response signal from the fire prevention receiving panel, the fire hydrant device 10 flashes the red indicator light 22 and lights up the response lamp 25.

[0066] On the rear side of the second enclosure 11b, facing the auxiliary door 20, a high-voltage terminal box 26a and a low-voltage terminal box 26b are arranged vertically side by side. The high-voltage terminal box 26a uses its built-in terminal block to connect the high-voltage cable drawn in from outside the fire hydrant system 10 to the red indicator light 22. The low-voltage terminal box 26b uses its built-in terminal block to connect the low-voltage cable drawn in from outside the fire hydrant system 10 to the transmitter 24, response lamp 25, telephone jack, etc.

[0067] Furthermore, a fire extinguisher door 16, which opens horizontally to the left by a hinge 16a, is positioned in the left-side door opening of the decorative frame 13b attached to the second housing 11b, and two fire extinguishers are stored in the fire extinguisher storage compartment inside the door. In addition, a viewing window 17 is provided in the fire extinguisher door 16, allowing the presence or absence of fire extinguishers to be confirmed from the outside.

[0068] The fire hydrant system 10, which is constructed by connecting and fixing a first housing 11a and a second housing 11b, is mounted and fixed by a frame 28 at a predetermined height on the guardian's walkway 30 along the tunnel wall. In addition, a water supply pipe 31 is brought out from below at a predetermined position on the road surface of the guardian's walkway 30 close to the tunnel wall. In this embodiment, since there is a pipe entry opening, for example a pipe passage, formed at a predetermined position on the bottom of the housing of the fire hydrant system 10, directly above the water supply pipe 31 brought out on the guardian's walkway 30, specifically at a predetermined position on the bottom of the housing of the valve storage section located to the left of the first housing 11a, a vertically connected entry pipe 32 is brought into the housing through the pipe passage at the bottom of the housing and connected to the piping of the valve storage section.

[0069] Furthermore, the location where the water supply pipe 31 is taken out for the monitoring staff passage 30 is arbitrary, and if the pipe passage formed in the bottom of the housing of the valve storage section of the fire hydrant device 10, which is attached and fixed to the frame 28, is not directly above, for example, the water supply pipe 3110 may be taken out on the right end side of the frame 28. In such a case, the water supply pipe 3110 is connected to the inlet pipe 3210, which is arranged to pass horizontally through the empty space inside the frame 28. Subsequently, the inlet pipe 32, which is connected vertically following the inlet pipe 3210, is pulled into the housing through the pipe passage at the bottom of the valve storage section and connected to the piping of the valve storage section.

[0070] In this embodiment, the water supply pipe 31 is taken out from the monitoring staff passage 30, and the inlet pipe 32 is connected to the fire hydrant device 10, using the empty space inside the frame 28 on the underside of the housing. Since the inside of the frame 28 on the underside of the housing is not exposed to the outside, the placement of the inlet pipe 32 does not detract from the appearance of the fire hydrant device 10. Furthermore, compared to the conventional case where the inlet pipe is placed on the side of the housing, the width of the space required for the fire hydrant device 10 is reduced, and the constraints around the device are also reduced, so it hardly gets in the way when the monitoring staff passage 30 is used for inspection or evacuation. In addition, the piping work of connecting the inlet pipe 32 to the water supply pipe 31, or connecting the inlet pipe 32 to the water supply pipe 3110 via the inlet pipe 3210, is also performed in the empty space inside the frame 28 which is open to the front, so the work can be carried out easily and efficiently.

[0071] [b. Installation of fire hydrant systems] Next, we will explain the installation of fire hydrant devices in the monitoring staff passage. In this explanation, please refer to Figure 2, which shows the fire hydrant device in Figure 1 from the left side.

[0072] As shown in Figure 2, a road 35 is constructed in the longitudinal direction (left-right direction) of the tunnel at the bottom of the cylindrical (circular cross-section) tunnel structure built by the shield tunneling method, and a monitoring walkway 30 is constructed at a predetermined height relative to the road 35 on the lower side of the tunnel wall 34 along the road 35. The inside of the monitoring walkway 30 is a duct, through which the main water supply pipe 36 and cables are laid, and a water supply pipe 31 branched from the main water supply pipe 36 is brought out onto the road surface of the monitoring walkway 30. A service pipe 32 connected to the water supply pipe 31 passes vertically through the support frame 28 and is drawn into the housing through a pipe passage at the bottom of the housing located directly above it.

[0073] Because it is difficult to cut out the tunnel wall 34 for the installation of the fire hydrant device 10 using the shield tunneling method, a support frame 28 is installed on the road surface of the monitoring walkway 30, close to the tunnel wall 34, and the connected first housing 11a and second housing 11b are attached and fixed onto the support frame 28 to install the fire hydrant device 10. In addition, the upper part of the fire hydrant device 10 is fixed to the tunnel wall 34 by a housing support member 41 to prevent it from falling forward.

[0074] Here, the height of the support frame 28 is set so that the height from the road surface of the monitoring walkway 30 to all operating objects, including the transmitter 24 and water nozzles located on the fire hydrant device 10, falls within the legally defined proper operating range. As is well known, when the road surface of the monitoring walkway 30 is considered the standing position of road users, the legally defined proper operating range has a lower limit height H1 of 800 mm and an upper limit height H2 of 1500 mm from the road surface, and therefore the vertical width Hw of the proper operating range is 700 mm.

[0075] In this embodiment, in order to ensure that all the objects to be operated housed or installed in the fire hydrant device 10 fall within the vertical width Hw (=700 mm) of the proper operating range, the installation height of the fire hydrant device 10 by the stand 28, i.e., the height H1 from the road surface of the supervisor's passage 30 to the bottom surface of the fire hydrant device 10 (bottom surface of the housing), is set. The height H1 is arbitrary, but for example, it is set to 800 mm, which is the same as the lower limit of the proper operating range H1.

[0076] Furthermore, the support frame 28 of this embodiment has a side shape that is an inverted trapezoid with the top side longer than the bottom side, and the rear side is an inclined surface that slopes diagonally downwards to follow the curved shape of the tunnel wall 34.

[0077] [c. Thinning of fire hydrant devices] Next, we will explain how the fire hydrant device has been made thinner. As shown in Figure 2, the fire hydrant device 10 is installed at a predetermined height on the road surface of the guardian's passage 30 by a support frame 28. In order to reduce the constraint on the width of the guardian's passage 30 caused by the protrusion (overhang) of the fire hydrant device 10 from the tunnel wall 34, the fire hydrant device 10 has been made as thin as possible.

[0078] The largest component in the front-to-back dimensions of the equipment housed in the fire hydrant system 10 is the fire extinguisher housed in the second housing 11b. Since the thickness (width in the front-to-back direction) of the fire hydrant system 10 can be reduced to a size that accommodates the fire extinguisher, the width of the fire hydrant system 10 is set to a predetermined width corresponding to the outer diameter of the fire extinguisher housed in the second housing 11b.

[0079] The outer diameter of a fire extinguisher is approximately 160 to 180 mm. If a gap is secured so that the stored fire extinguisher does not come into contact with the second housing 11b, the minimum width of the fire hydrant device 10 will be, for example, 250 mm or less, and the width of the fire hydrant device 10 will be set to, for example, 250 mm. In contrast, the width of a conventional fire hydrant device 10, which is installed by cutting out a box in the wall of the tunnel structure, is 300 mm or more. Therefore, the fire hydrant device 10 of this embodiment can reduce the width compared to conventional devices and make the fire hydrant device 10 thinner.

[0080] Furthermore, the first housing 11a of the fire hydrant device 10 is designed to accommodate a fire hose of the same predetermined length as conventional fire hydrant devices, for example, a 30m shape-retaining hose, in an inwardly coiled state. This is achieved by increasing the width (width in the left-right direction) of the first housing 11a compared to conventional fire hydrant devices.

[0081] Furthermore, in conventional fire hydrant systems, terminal boxes 26a and 26b were located on the rear surface of the housing behind the fire extinguisher storage section where the fire extinguishers are housed. However, with the thinning of the fire hydrant system 10, it is no longer possible to place the terminal boxes 26a and 26b on the rear surface of the housing behind the fire extinguisher storage section. Therefore, the width (width in the left-right direction) of the part of the second housing 11b where the electrical equipment is installed has been increased to a width that allows for the placement of both the electrical equipment and the terminal boxes.

[0082] [d. Internal structure of a fire hydrant system] Next, the internal structure of the fire hydrant system will be described. In this description, refer to Figure 3, which shows the internal structure of the fire hydrant storage section of the fire hydrant system in Figure 1, viewed from the front with the front of the housing open; Figure 4, which shows the internal structure of the fire hydrant system in Figure 1 with the fire hydrant equipment arranged, viewed from the right side in cross-section; and Figure 5, which shows the fire hydrant system in Figure 1, viewed from the front with the fire hydrant door open. Note that Figure 4 shows the cross-section along the cutting line aa in Figure 5.

[0083] The interior of the first housing 11a, which houses the fire hydrant, is divided into a valve storage section 40 on the left and a hose storage section 42 on the right.

[0084] (d1. Valve storage compartment) The valve housing section 40 will now be described in more detail. A service drop pipe 32 is connected to the upper side of the water supply pipe 31 that is brought out onto the road surface of the monitoring walkway 30. The service drop pipe 32 passes vertically through the inside of the frame 28 and is drawn into the housing of the valve housing section 40 through a pipe passage formed in the bottom of the housing, and is connected to the valve pipe 44 by a pipe connector 38. Here, the structure and type of pipe connector 38 are arbitrary, but for example, a known union connector is used. The valve pipe 44 is attached and fixed to the side of the second housing 11b side inside the first housing 11a by a pipe support section 46.

[0085] The valve piping 44 rises vertically within the first housing 11a, then bends horizontally, and is connected to a water tap 48 used by the fire brigade via a branch pipe 47. From the branch pipe 47, valve piping is connected downwards, and a fire hydrant valve 50 and an automatic pressure regulating valve 52 are connected to the valve piping in order.

[0086] The fire hydrant valve 50 is equipped with an interlocking box 72, and a wire 77 is connected to an operation box 68 located on the back side of the fire hydrant door 12, which is shown in the open state in Figure 5. This constitutes a known wire linkage mechanism in which the rotation associated with the opening and closing operation of the fire hydrant valve opening / closing lever 70 of the operation box 68 is transmitted to the interlocking box 72 via the wire 77 to open and close the fire hydrant valve 50.

[0087] The automatic pressure regulating valve 52 adjusts the pressure of the fire extinguishing water supplied to the fire extinguishing hose 60 to maintain a predetermined pressure. The piping following the automatic pressure regulating valve 52 is bent laterally and connected to the hose connection piping 54, to which the base end of the fire extinguishing hose 60 is connected. An automatic drain valve 55 is installed at the lower end of the piping following the automatic pressure regulating valve 52, and the hose connection piping 54 is attached and fixed to the bottom of the housing by a pipe support part 56.

[0088] The automatic drain valve 55 is open when the fire hydrant valve 50 is closed and no pressure is applied, allowing for the draining of fire extinguishing water remaining in the piping and fire hose 60 on the secondary side of the fire hydrant valve 50. The automatic drain valve 55 closes when pressure is applied due to the supply of fire extinguishing water by opening the fire hydrant valve 50.

[0089] (d2. Hose storage section) The hose storage section 42 will be described in more detail. The hose storage section 42 is formed by a partition plate 43 positioned vertically at the boundary with the valve storage section 40, and a partition plate 45 positioned horizontally above the valve storage section 40, creating a box-shaped area with an opening at the front.

[0090] Cylindrical or cylindrical frame members 58 are provided at intervals both vertically and horizontally in the front opening of the hose storage section 42, forming a grid to support the front of the fire extinguishing hose 60, and a rectangular hose outlet 62 is formed in the center of the front opening, partitioned by the frame members 58.

[0091] Inside the hose storage section 42, the fire extinguishing hose 60 is stored wound inward vertically. The vertical and horizontal dimensions of the hose storage section 42 are arbitrary, but for example, if the vertical dimension is 900 mm and the horizontal dimension is 800 mm, the length of each turn of the fire extinguishing hose 60 is approximately 3.1 m. If the length of the fire extinguishing hose 60 is, for example, 30 m, it can be stored by winding it inward about 9 to 10 times.

[0092] As shown in Figure 5, the fire extinguishing hose 60, which is pulled out from the hose outlet 62, has a water discharge nozzle 64 attached to it at a position where it passes through a hose guide 63 installed on the back of the fire hydrant door 12. The water discharge nozzle 64 is detachably held in a nozzle holder 66 fixed to the back of the fire hydrant door 12.

[0093] Furthermore, an operation box 68 for remotely operating the fire extinguishing valve 50 located in the valve storage section 40 is located on the back of the fire hydrant door 12. The operation box 68 is equipped with a fire hydrant valve opening / closing lever 70 that can be rotated up and down. The position shown in Figure 5 is the closed position of the fire hydrant valve opening / closing lever 70, and the position when rotated downwards is the open position. As shown in Figure 4, a hose guard 74 is installed on the back of the right-hand door of the operation box 68 to prevent the fire extinguishing hose 60 pulled out from the hose storage section 42 from being damaged by contact with the operation box 68.

[0094] Inside the control box 68, there is a fire pump activation interlock switch 78. The fire pump activation interlock switch 78 turns on when the fire hydrant valve opening / closing lever 70 is operated to the open position, and sends a pump activation signal to the disaster prevention receiving panel to activate the fire pump equipment.

[0095] Furthermore, a pump start switch 75 is provided on the lower right side of the water tap 48 located in the valve storage section 40. The pump start switch 75 is turned on by a push operation when a firefighter connects a hose to the water tap 48 to extinguish a fire, sending a pump start signal to the disaster prevention receiving panel to start the fire pump equipment.

[0096] [e. Installation height of fire hydrant system] The installation height of the fire hydrant device relative to the monitoring walkway will be explained in more detail. As shown in Figure 5, the fire hydrant device 10 is installed on the monitoring walkway 30 by a support frame 28 such that the height from the road surface of the monitoring walkway 30 is 800 mm, which matches the lower limit height H1 of the proper operating range. In other words, the height of the support frame 28 on which the fire hydrant device 10 is installed is 800 mm, which matches the lower limit height H1 of the proper operating range.

[0097] Thus, the fire hydrant device 10, installed via the support frame 28 at a height of 800 mm above the road surface of the monitoring walkway 30, has the bottom surfaces of the first housing 11a and the second housing 11b at 800 mm, which is the lower limit height H1 of the proper operating range, and the operating positions of the water taps 48, etc., are at or below 1500 mm, which is the upper limit height H2 of the proper operating range, and the 700 mm range, which is the proper operating range Hw, is included in the vertical width of the fire hydrant device 10.

[0098] Here, all operating devices and control sections that are to be operated on the fire hydrant system 10 must be included within the appropriate operating range Hw (a range with a vertical width of 700 mm), with a lower limit height H1 of 800 mm and an upper limit height H2 of 1500 mm.

[0099] The objects of operation in the first housing 11a, which serves as the fire hydrant storage section, include, on the hose storage section 42 side, the door opening / closing handle 1210 (see Figure 1) of the fire hydrant door 12 and the inwardly coiled fire hose 60, and on the valve storage section 40 side, the water discharge nozzle 64, the fire hydrant valve opening / closing lever 70, the pump start switch 75, and the water tap 48 (operating handle and hose connection port).

[0100] Furthermore, the targets of operation for the second housing 11b include the transmitter 24 and telephone jack on the electrical door 18, the door opening / closing handle 1610 on the fire extinguisher door 16, and the handle lever that serves as the operating part on the top of the fire extinguisher 76.

[0101] In the fire hydrant system 10 of this embodiment, all of the aforementioned operating targets are included within an appropriate operating range Hw (a range with a vertical width of 700 mm) with a lower limit height H1 of 800 mm and an upper limit height H2 of 1500 mm. This ensures that the operating devices and operating parts are at an easily accessible position (height) for road users, firefighters, and recovery workers standing on the road surface of the monitoring walkway 30, without being too high or too low.

[0102] [f. Door opening and closing mechanism for fire hydrant doors] Next, we will explain the door opening and closing mechanism of the fire hydrant door. There are two embodiments of the fire hydrant door opening and closing mechanism, and we will explain each separately.

[0103] (f1. First embodiment of a fire hydrant door opening and closing mechanism) A first embodiment of the fire hydrant door opening and closing mechanism will be described. In this description, refer to Figure 6, which shows a cross-sectional view from the right side of the fire hydrant device of the first embodiment of the fire hydrant door opening and closing mechanism in the closed position, Figure 7, which shows the rotary door opening and closing mechanism in the 90° open position, and Figure 8, which shows the rotary door opening and closing mechanism in the 180° open position.

[0104] As shown in Figures 6 to 8, the door opening and closing mechanism 80 is provided on the fire hydrant door 12 and can be any mechanism that rotates the fire hydrant door 12 180° vertically (up and down) to open and close it. For example, it consists of a base 82 with a slide hole 90, a first link 84, a second link 86, and a guide link 88 with a slide shaft portion 92 at one end. In addition, a damper 94 is provided for the door opening and closing mechanism 80 as a buffer device.

[0105] The base 82 is fixed to the decorative frame 13a so as to be located on the lower inner side of the door opening 15 formed in the decorative frame 13a, and one end of the first link 84 is pivotally supported at the top by the shaft portion 83. One end of the second link 86 is pivotally supported at the other end of the first link 84 by the shaft portion 85, and the other end of the second link 86 is pivotally supported on the lower inner side of the fire hydrant door 12 by the shaft portion 87. Here, the first link 84 and the second link 86 constitute a two-bar link that is the main part of the door opening and closing mechanism 80. The first link 84 is biased clockwise when viewed from the right side, as shown in Figures 6 to 8, by a coil spring or the like provided on the shaft portion 83.

[0106] A slide hole 90 is formed on the side of the base 82, slanting upward toward the front. A slide shaft portion 92, provided at one end of a guide link 88, is slidably positioned in the slide hole 90, and the other end of the guide link 88 is pivotally supported by a shaft portion 89 on the inside of the lower end of the fire hydrant door 12 (below the shaft portion 87). The guide link 88 restricts the movement of the two-bar linkage composed of the first link 84 and the second link 86, and acts as the center of rotation, creating a movement that rotates the fire hydrant door 12 within a predetermined range determined by the length of the slide hole 90.

[0107] The damper 94 has one end, which is on the cylinder side, fixed to the frame member 58 of the hose storage section 42 by a fixing part 95, and the other end, which is on the rod side, is pivotally supported in the middle of the first link 84 by a shaft part 93. The damper suppresses the movement speed associated with the opening of the fire hydrant door 12, allowing the fire hydrant door 12 to move smoothly to the open position and suppressing the impact when the fire hydrant door 12 stops in the open position.

[0108] When a road user pulls the door opening / closing handle 1210 towards them to release the lock in order to open the fire hydrant door 12, the first link 84 and the second link 86 of the door opening / closing mechanism 80 bias the fire hydrant door 12 forward, as shown in Figure 7. However, at this time, the lower end of the fire hydrant door 12 is restricted from moving forward by the guide link 88, so the fire hydrant door 12 rotates downward around its lower end.

[0109] Then, the fire hydrant door 12, which rotates downward, rotates 180° toward a position where it abuts the front surface of the decorative frame 13b on the lower side of the door opening 15, and stops at the position where it abuts the front surface of the decorative frame 13a (open position), thereby fully opening the lower side of the door opening 15 that was closed by the fire hydrant door 12. As shown in Figure 8, the fire hydrant door 12 in the open position faces the front surface of the first housing 11a and the front surface of the support frame 28 below the lower end of the door opening 15, and is in a position perpendicular to the road surface of the monitoring staff passage 30.

[0110] Therefore, when the fire hydrant door 12 is in the open position, the amount of the monitoring staff passage 30 protruding onto the road surface (forward from the fire hydrant device) is only the thickness of the fire hydrant door 12 (width in the front-to-back direction), and since there is virtually no protrusion, the open fire hydrant door 12 does not obstruct passage in the monitoring staff passage 30.

[0111] (f2. Second embodiment of the fire hydrant door opening and closing mechanism) Next, a second embodiment of the fire hydrant door opening and closing mechanism will be described. In this description, refer to Figure 9, which shows a cross-section of the second embodiment of the fire hydrant door opening and closing mechanism as viewed from the right side of the fire hydrant device. Figure 9(A) shows the fire hydrant door in the closed position, and Figure 9(B) shows the fire hydrant door in the open position (open position).

[0112] As shown in Figure 9, in this embodiment, a door storage recess 1510 is formed on the front surface of the housing, corresponding to the closed and open positions of the fire hydrant door 12, and is a recess corresponding to the vertical width, horizontal width, and thickness of the fire hydrant door 12.

[0113] The door rotation shaft 96 of the door opening / closing mechanism 80 in this embodiment is provided on the inner surface of the door storage recess 1510 corresponding to the lower end of the door opening 15 (the lower end of the fire hydrant door 12 in the closed position), and pivotally supports the lower end of the fire hydrant door 12 in the closed position. The damper 94 has one end, the cylinder side, fixed to the frame member 58 of the hose storage section 42 by a fixing part 95, and the other end, the rod side, pivotally supported by a shaft part 93 on the damper mounting part 98 provided on the inside of the lower end of the fire hydrant door 12. The damper mounting part 98 is also provided at a predetermined angle so that the rear side (inside the housing) is positioned higher (when the fire hydrant door 12 is closed) than the front side in order to smoothly rotate and open the fire hydrant door 12 by 180°, and a downward force is applied by the damper 94 when the fire hydrant door 12 is opened.

[0114] When a road user pulls the door opening / closing handle 1210 towards them to release the lock in order to open the fire hydrant door 12, as shown in Figure 9(B), the fire hydrant door 12 rotates 180° downwards around the door rotation axis 96 and is stored in the lower part of the door storage recess 1510 corresponding to the open position, facing the front of the first housing 11a and the front of the support frame 28 below the lower end of the door opening 15, and is in a position perpendicular or nearly perpendicular to the road surface of the supervisor's passage 30.

[0115] The door opening and closing mechanism 80 of this embodiment has an extremely simple structure compared to the link structure shown in Figures 6 to 8. Although it requires a door storage recess 1510 formed on the front surface of the first housing 11a corresponding to the closed and open positions of the fire hydrant door 12, the overall structure of the fire hydrant system is simple and cost can be reduced.

[0116] [g. Variations of the present invention] Modifications of the fire hydrant device according to the present invention will now be described. In addition to the embodiments described above, the fire hydrant device of the present invention includes the following modifications.

[0117] (Nozzle holder) In the above embodiment, the nozzle holder for detachably holding the water discharge nozzle is located on the back side of the fire hydrant door, but it is not limited to this, and may be fixed to a frame member located on the front of the hose storage section, for example.

[0118] (Fire hydrant valve opening / closing operation part) In the above embodiment, the operating box equipped with the fire hydrant valve opening / closing lever, which constitutes the fire hydrant valve opening / closing operation unit, is located on the back side of the fire hydrant door. However, it is not limited to this, and may be fixed to a frame member located on the front of the hose storage unit, for example.

[0119] (Fire hydrant device installed using a wall-mounted structure) The above embodiment takes as an example a fire hydrant system installed by a stationary structure in which a frame is installed on the road surface of a guardian's walkway and the fire hydrant system is attached and fixed to the installed frame. However, it is not limited to this, and the same applies to fire hydrant systems installed by a wall-mounted structure in which a frame is installed on the tunnel wall and the fire hydrant system is attached and fixed to the installed frame.

[0120] (Housing for fire hydrant system) In the above embodiment, electrical equipment and fire extinguishers are arranged and housed in a second housing, but the invention is not limited to this, and the second housing may be divided into a housing for electrical equipment and a housing for fire extinguishers. That is, it may be divided into a first housing for housing fire hydrant equipment, a second housing for housing electrical equipment, and a third housing for housing fire extinguishers.

[0121] (others) Furthermore, the present invention includes appropriate modifications that do not impair its purpose and advantages, and is not limited by the numerical values ​​shown in the above embodiments. [Explanation of Symbols]

[0122] 10: Fire hydrant system 11a: First enclosure 11b: Second cabinet 12: Fire hydrant door 1210, 1610: Door opening / closing handle 13a, 13b: Decorative frame 14: Maintenance Door 15: Door opening 1510: Door storage recess 16: Fire extinguisher door 17: Peephole 18: Electric Door 20: Auxiliary door 22: Red indicator light 24: Transmitter 25: Response lamp 26a, 26b: Terminal box 28: Stand 30: Guard passage 31,3110: Water supply piping 32,3210: Service entrance piping 34: Tunnel wall 35: Road 36: Water main 38: Piping joint 40: Valve storage compartment 42: Hose storage compartment 43, 45: Partition board 44: Valve Piping 46,56: Piping support part 48: Water tap 50: Fire hydrant valve 52: Automatic pressure regulating valve 54: Hose connection piping 55: Automatic drain valve 58: Frame components 60: Fire hose 62; Hose outlet 63: Hose Guide 64: Water nozzle 66: Nozzle holder 68: Control Box 70: Fire hydrant valve opening / closing lever 72: Interlocking Box 74: Hose Guard 75: Pump start switch 76: Fire extinguisher 78: Pump activation interlock switch 80: Door opening and closing mechanism 82: Base 83, 85, 87, 89, 93: Shaft section 84: First Link 86: Second Link 88: Guide Link 90: Slide hole 92: Slide shaft 94: Damper 95: Fixed part 96: Door rotation axis 98: Damper mounting section

Claims

1. A fire hydrant device installed at a predetermined height above the road surface of a monitoring walkway provided along the wall of a tunnel with a road, and installed in close proximity to or in contact with the tunnel wall, A first enclosure in which fire hydrant equipment is housed or installed, A second enclosure is positioned adjacent to one side of the first enclosure and houses or installs a fire extinguisher and electrical equipment. A hose storage compartment, which houses a fire extinguishing hose, is located inside the other side of the first housing. A valve storage section is located inside one side of the first housing, and predetermined valves, including a fire hydrant valve, are installed in the piping to which the fire extinguishing hose is connected. A fire hydrant device characterized by being equipped with the following features.

2. In the fire hydrant device according to claim 1, A pipe passage is formed at a predetermined position on the bottom of the first housing, A fire hydrant system characterized in that the water supply pipe, which is brought out from below the road surface of the monitoring staff passage onto the road surface, passes vertically through the empty area below the first housing, is then drawn into the first housing from the pipe passage section, and connected to the pipe in the valve storage section.

3. In the fire hydrant device according to claim 1, A pipe passage is formed at a predetermined position on the bottom of the first housing, A fire hydrant system characterized in that the water supply pipe, which is brought out from below the road surface of the guardian's passage onto the road surface, passes laterally through the empty area below the first housing or from below the second housing to the empty area below the first housing, is then drawn into the first housing through the pipe passage and connected to the pipe in the valve housing.

4. In the fire hydrant device according to claim 1, The first enclosure is, Below the door opening on the front of the enclosure is a fire hydrant door that rotates perpendicularly to the surface of the guardian's passageway around its lower end as an axis, opening to an open position where the door surface is perpendicular to the surface of the guardian's passageway. A maintenance door is provided above the door opening on the front of the enclosure, which rotates perpendicularly to the surface of the monitoring staff passage on its upper end as an axis to open. A fire hydrant device characterized by being equipped with the following features.

5. In the fire hydrant device according to claim 1, The first housing houses or installs a predetermined object to be operated, The fire hydrant device is characterized in that the predetermined target of operation is positioned at a height that falls within the appropriate operating range from the standing surface of road users as legally defined.

6. In the fire hydrant device according to claim 5, The fire hydrant system is characterized in that the predetermined operating targets include an opening and closing handle for the fire hydrant door, a water nozzle connected to the fire hose, an opening and closing operating section for the fire hydrant valve, a water tap to which a fire brigade hose is connected from the outside, and a fire pump activation switch.

7. In the fire hydrant device according to claim 1, The second housing houses and arranges a predetermined object to be operated. The fire hydrant device is characterized in that the predetermined target of operation is positioned at a height that falls within the appropriate operating range from the standing surface of road users as legally defined.

8. In the fire hydrant device according to claim 7, The fire hydrant system is characterized in that the predetermined target of operation includes the opening and closing handle of the fire extinguisher door, the operating section of the fire extinguisher, and the operating section of the electrical equipment.

9. In a fire hydrant device according to any one of claims 5 to 8, The fire hydrant system is characterized in that the appropriate operating range is from 800 mm to 1500 mm above the road surface of the monitoring walkway where road users stand.

10. In the fire hydrant device according to claim 1, The fire hydrant system is characterized in that the first housing and the second housing are installed on a frame placed on the road surface of the monitoring passage, at a predetermined height above the road surface of the monitoring passage, in close proximity to or in contact with the tunnel wall.

Images