JP7194142B2 - Fire hydrant equipment in tunnels, installation method of fire hydrant equipment and inspection implementation method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a fire hydrant installation in a tunnel equipped with a fire hydrant device that discharges water by pulling out a housed hose with a nozzle, a method for installing the fire hydrant device , and an inspection method.

Conventionally, fire hydrants installed in tunnels such as highways and motorways have a fire hydrant storage part in a housing with a fire hydrant door that can be opened freely, and a hose with a nozzle attached to the tip and valves are stored. For example, two fire extinguishers are stored in a fire extinguisher storage section having a fire extinguisher door that can be freely opened and closed.

Such fire hydrant devices are installed at intervals of, for example, 50 meters along the side wall facing the guard passage provided in the tunnel. The inspector's passage is set up as a side wall passage that is about 1 meter higher than the road surface, and it is possible to safely inspect various equipment including the fire hydrant installed in the tunnel without hindering vehicle traffic inside the tunnel. and

In the event of a vehicle accident involving a fire, users such as the driver of the accident vehicle should open the fire hydrant door of the fire hydrant system, pull out the hose with a nozzle, and operate the fire hydrant valve open/close lever to turn off the fire pump equipment. Fire extinguishing work can be performed by activating and discharging water.

JP 2008-055024 A JP 2009-285126 A EP-A-1224954 Japanese Patent Application Laid-Open No. 2003-190315 JP-A-08-080358 Japanese Utility Model Laid-Open No. 04-051964

However, in such a conventional fire hydrant system installed in a tunnel, since it was installed along the side wall facing the lifeguard passage, in the event of a vehicle accident, the user could not reach the side wall of the lifeguard passage from the road surface. It is necessary to reach out to the fire hydrant installed in the fire hydrant, open the fire hydrant door, pull out the hose and extinguish the fire. In some cases, it was necessary to go up to the guards' passage and operate it without reaching it.

In order to solve this problem, the fire hydrant system can be installed along the side wall facing the road inside the tunnel. In this case, the opened fire hydrant door protrudes toward the road, which is inconvenient in that inspection work must be performed while regulating vehicle traffic in the tunnel.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for installing a fire hydrant device which can be easily and easily handled from a road surface, and which does not require vehicle traffic restrictions during inspections, and a method for performing inspections thereof .

The present invention is a fire hydrant installation in a tunnel,
A recess provided in the guard passage provided along the tunnel wall surface and having a mounting opening on the road side;
A fire hydrant device having a front surface of the main body that is embedded so as to be exposed from the mounting opening of the recess, and an inspection opening on the rear surface of the main unit opposite to the front surface of the main unit;
A work space formed on the back side of the main body of the fire hydrant device embedded in the recess of the recess ;
A doorway that is formed on the road surface of the guard passage and allows entry and exit to the work space;
characterized by comprising

Moreover, this fire hydrant apparatus is equipped with the door which can be opened and closed freely in front of a main body.

In addition, this fire hydrant device houses the hose and/or valve inside,
Hoses and/or valves can be inspected through inspection openings.

The present invention is a method for installing a fire hydrant device,
A fire hydrant device with an inspection opening on the back of the main unit is embedded in a recess with an installation opening on the road side provided in the guard passage along the tunnel wall so that the front surface of the main unit is exposed from the installation opening. A work space having an entrance and exit on the road surface side of the observer passage is provided between the back surface of the main body of the fire hydrant device and the bottom surface of the recess in a state where the fire hydrant device is embedded.

The present invention is an inspection implementation method for a fire hydrant device,
A fire hydrant device with an inspection opening on the back of the main unit is embedded in a recess with an installation opening on the road side provided in the guard passage along the tunnel wall so that the front surface of the main unit is exposed from the installation opening. Then, from the work space with the entrance on the road surface side of the observer passage provided between the back of the main body of the fire hydrant device and the bottom of the recess, with the fire hydrant device embedded, the inside of the main body through the inspection opening characterized by checking the

[Effect of fire hydrant device]
In a fire hydrant device, the present invention includes a fire hydrant storage section formed in a guard passage provided along a tunnel side wall and having a mounting opening on the road side, and a hose with a nozzle embedded in the fire hydrant storage section. The fire hydrant system is provided with a freely openable/closable fire hydrant door at the front opening facing the road of the housed housing and a freely openable/closable inspection door at the rear opening of the housing, so that the fire hydrant system directly faces the road surface. Therefore, when a vehicle accident involving a fire occurs, the user such as the driver of the accident vehicle can open the fire hydrant door near the road surface and pull out the hose with the nozzle to extinguish the fire. Compared to the fire hydrant system installed on the side wall of the tunnel above the observer passage, the fire hydrant system can be operated simply and easily without being obstructed by the observer passage, making it possible to carry out fire extinguishing work quickly and reliably. and

In addition, instead of installing the fire hydrant on the side wall of the tunnel along the walkway for observers, the hose pulled out from the fire hydrant does not block the walkway for observers by embedding it in the side wall on the road side of the walkway for observers. Therefore, it does not hinder evacuation and enables quick and safe evacuation action.

(Effect of inspection work space behind the fire hydrant system)
In addition, the fire hydrant storage unit forms an inspection work space behind it with the fire hydrant system embedded , and an entrance to the inspection work space is provided in the observer passage, so when inspecting the fire hydrant system , the inspector can enter the inspection work space behind the fire hydrant system from the entrance provided on the observer passage side, open the inspection door provided on the back of the fire hydrant system, and perform the necessary inspection work. There is no need to open the fire hydrant door for inspection from the side of the road where the fire hydrant is located. To enable inspection work of a fire hydrant device without having to do it.

In addition, since a lattice lid that can be freely opened and closed is provided at the entrance of the inspection work space, the location of the entrance can be easily found when inspecting the fire hydrant system. Ventilation is always performed, and the danger of work due to stagnant gas, etc. can be eliminated.

In addition, when the inspection work space is narrow, it is possible to open the lattice lid provided in the inspector's passage and put the hand in from outside the inspection work space to perform the necessary inspection work.

(Effect of opening the fire hydrant door from the rear opening)
In addition, an operation mechanism is provided to open the inspection door and release the hold of the fire hydrant door by operating from the rear opening . Make it possible to inspect the movement of the fire hydrant door.

(Effect of screen door as fire hydrant door and inspection door)
In addition, the fire hydrant door and the inspection door of the fire hydrant system are closed by unfolding and holding the screen with both sides positioned inside the opening frame to cover and close the opening, and by releasing the holding of the screen, the screen is closed. Since the screen door can be folded to open the opening, when the screen is opened, the screen is folded inside the housing inside the opening, and the folded part of the screen does not protrude outside. Even if the screen door is open, the opening of the screen door does not interfere with the passage of vehicles in the tunnel, and the folded part of the screen does not interfere with fire extinguishing operations such as withdrawing the hose while the screen is open. It can be done easily without

On the other hand, when an inspector enters the inspection work space behind the fire hydrant system for inspection work and opens the screen door that functions as an inspection door, the back opening of the fire hydrant system opens and is installed inside the fire hydrant system. It is possible to inspect devices such as hoses with nozzles and fire hydrant valves. In this case, the screen opened for inspection will be folded inside the housing inside the rear opening, and the folded part of the screen will not protrude into the inspection work space, so the opened screen will not interfere with the inspection. It is possible to effectively use the inspection work space that is constrained in terms of space.

In addition, during inspections, inspection work is carried out by opening the screen door that functions as a fire hydrant door provided at the front opening. To safely confirm the opening/closing operation of a screen door without interfering with the passage of vehicles.

(maintenance door and screen door)
In addition, the fire hydrant device is provided with a maintenance door that can be freely opened and closed upward with the upper side as an axis at the upper opening that is the upper side of the front opening of the housing, and a fire hydrant door is provided at the lower opening that is the lower side of the front opening. is a screen door that unfolds and holds the screen with both sides positioned inside the opening frame to cover and close the lower opening, and releases the screen to fold the screen and open the lower opening. As a result, even if the fire hydrant device is installed directly facing the road surface, when the screen door is opened, the hose with the nozzle and the fire hydrant valve operation lever necessary for the user's fire extinguishing work are exposed. Since the maintenance door that is opened to use the water hydrant is closed, the user is not confused and can reliably perform fire extinguishing work using the fire hydrant device.

In addition, since the fire hydrant device directly faces the road surface, firefighters can easily and easily discharge water by opening the maintenance door and connecting the fire hose to the water hydrant, enabling quick firefighting activities.

(Effect of screen door as fire hydrant door and inspection door with other structure)
In addition, the fire hydrant door covers the front opening by unfolding and holding the screen with both sides positioned inside the opening frame, and by releasing the holding of the screen, the screen is folded to close the front opening. The structure of the inspection door can be simplified and the cost can be reduced compared to the screen door by using a screen door to be opened and the inspection door by using a laterally opening door, a curtain door or a detachable panel member.

(Screen foldable compartment)
In addition, the housing has a partition plate arranged in the lower horizontal direction to form a screen storage portion for storing the screen in a folded state on the lower side, and a hose storage portion and a valve storage portion including a fire hydrant valve on the upper side of the partition plate. , the opened screen is stored in the housing in a folded state without being affected by the installation of valves including a hose with a nozzle and a fire hydrant valve installed in the fire hydrant device. It is possible to eliminate jumping out.

(Effect of connecting fire extinguisher housings)
In addition, a fire extinguisher housing for storing a fire extinguisher is connected to the housing, an openable and closable fire extinguisher door is provided in the front opening of the fire extinguisher housing facing the road, and an openable and closable fire extinguisher door is provided in the rear opening of the housing. Since the door is provided, the fire extinguisher door also faces the road surface directly. It is now possible to take out the fire extinguisher stored inside to extinguish the fire, and compared to the conventional installation on the tunnel side wall above the guard passage, the fire extinguisher door can be accessed without being obstructed by the guard passage. Since it is close at hand, it is possible to simply and easily take out the fire extinguisher and perform quick and reliable fire extinguishing work.

In addition, when inspecting fire extinguishers on a regular basis, enter the inspection work space behind the fire hydrant system from the entrance provided on the observer's passage side, open the inspection door provided on the back , and inspect or replace the fire extinguisher. This eliminates the need to open the fire extinguisher door from the side of the road facing the fire hydrant system, just like the conventional installation on the side wall of the tunnel above the guard passage. In addition, work such as inspection and replacement of fire extinguishers can be performed without requiring vehicle traffic regulation in tunnels.

(Effect of screen door as fire extinguisher door)
In addition, the fire extinguisher door and the inspection door are closed by unfolding and holding the screen with both sides positioned inside the opening frame to cover and close the opening, and by releasing the holding of the screen, the screen is folded. Since the screen door is designed to open the opening, when the screen is opened, the screen is folded inside the housing inside the opening, and the folded part of the screen does not protrude outside at all, preventing the passage of vehicles in the tunnel. In addition, taking out a fire extinguisher with the screen open can be easily performed without being hindered by the folded part of the screen.

(Effect of screen door as fire extinguisher door and inspection door with other structure)
In addition, the fire extinguisher door covers the front opening by unfolding and holding the screen with both sides positioned inside the opening frame to close the front opening, and by releasing the holding of the screen, the screen is folded to open the front opening. The inspection door is a side-opening door, a curtain door, or a detachable cover member, thereby simplifying the structure of the inspection door compared to the screen door and reducing the cost.

(Effect of screen folding storage)
In addition, the fire extinguisher housing has a partition plate arranged in the horizontal direction of the lower part to form a screen storage part for storing the screen in a folded state on the lower side, and a fire extinguisher storage part is formed on the upper side of the partition plate. To make it possible to store an open screen in a folded state in a housing without being affected by the installation of a fire extinguisher and to eliminate the protrusion to the outside.

(The effect of folding the screen upwards and to the left and right)
In addition, the screen door has a structure in which the screen that covers the opening in the unfolded state and is closed is folded upward, rightward, or leftward to be opened, so that the screen can be opened in an appropriate direction as necessary. .

(Effect of division structure of housing and screen door)
In addition, since the screen door is separated from the housing and is detachably installed in the opening of the housing, the housing and the screen door are manufactured separately at the assembly manufacturing stage, and finally the housing is assembled. A fire hydrant device can be completed by assembling and fixing a screen door to an opening, and manufacturing and assembly are easy, productivity is high, and manufacturing cost can be reduced.

In addition, when the screen facing the road is soiled or damaged after installation, the soiled or damaged screen door is removed from the housing and replaced with a separately prepared screen door to enable simple and easy repair.

(Effect of screen door structure)
The screen door includes a door frame attached and fixed to the opening of the housing, a plurality of guide bar members arranged at the upper and lower ends of the rear surface of the screen and between them at predetermined intervals, and a guide bar member arranged on the rear surface of the screen. A plurality of weight bar members placed between them and the guide bar members placed inside the opening frames on both the left and right sides of the door frame. a first guide rail that slides in the groove and guides and moves in the vertical direction; and a weight bar member that is disposed inside the first guide rail and slidably contacts both ends of the weight bar member to restrict movement in the depth direction and guide movement in the vertical direction. By holding the second guide rail and the guide bar member at the upper end of the screen, the screen is held in the expanded closed state, and by a predetermined operation, the holding of the guide bar member at the upper end is released to fold the screen into the open state. Since the screen opening and closing mechanism is provided, when the guide bar member at the upper end of the screen is released in the unfolded state and the guide bar member is dropped along the first guide rail, both ends of the screen are opened. Since the guide bar member is positioned inside the frame, the screen portion between the guide bar members falls while curving inward, thereby folding the screen inside the opening lower portion to open the screen folding portion. does not protrude outward at all, fire extinguishing operations such as drawing out hoses and inspection work can be easily performed without being hindered by the folded portion of the screen.

Further, when the screen is released and the guide bar member is dropped along the first guide rail, the screen portion between the guide bar members is curved inwardly as the guide bar member is dropped. The weight of the weight bar member is used to bias the guide bar member, and as the guide bar member is dropped, the screen portion between the guide bar members can be smoothly folded inward.

In addition, a weight bar member is arranged between a plurality of guide bar members arranged on the back surface of the screen, and both ends of the weight bar member are brought into contact with the second guide rails so as to restrict movement in the depth direction, thereby enabling the screen to be deployed. By applying tension to the open screen by the weight of the weight bar member and by restricting the movement of the weight bar member in the depth direction, the flatness of the screen in the unfolded state is improved and the conventional sideways opening is achieved. To make it possible to give a texture equivalent to that of a metal fire hydrant door.

(Effect of interval between guide bar member and weight bar member)
In addition, in the screen door, the weight bar member and the guide bar member arranged below and adjacent to the weight bar member arranged on the back surface of the screen and the guide bar member arranged adjacent to and above the weight bar member (L1) Since the distance (L2) to the bar member is shortened (L1>L2), the weight bar member is not placed in the center of the guide bar member, but at a position slightly offset downward, and as the guide bar member drops, When the screen portion between them begins to bend inward, the weight bar member is placed slightly below the center, so that the weight of the weight bar member further urges the bending of the screen, making the folding of the screen even smoother. make it possible to do

(Effect of upper and lower guide bar members)
In the screen door, the plurality of guide bar members arranged on the back surface of the screen are plate-shaped bar members having a rectangular cross section, and the guide bar members arranged at the upper and lower ends of the plurality of guide bar members are provided at both ends. The roller is housed in the guide groove of the first guide rail and rotatably supported, and both ends of the guide bar member disposed between the upper and lower ends are housed in the guide groove of the first guide rail so as not to rotate. , the guide bar at the lower end rotates inward as the screen drops, and the screen can be reliably folded inside the door.

In addition, the upper guide bar member is provided with a buckle metal fitting used for opening and closing the screen, but if the screen is released from being held and falls and is folded inside the opening lower part, the upper end guide bar member will be pushed outward. To prevent a buckle metal fitting from turning sideways to prevent the buckle metal fitting from protruding upward and interfering with drawing out a hose.

(Effect of guide rail end of weight bar member)
In addition, the second guide rail has a predetermined position between the first weight bar member from the bottom and the second guide bar member from the bottom in a state where the screen is deployed and the door opening is closed. At the same time, curved guide rails are integrally formed that curve and extend inward from the ends of the guide rails, and in the depth direction of both ends of the weight bar member located below the ends of the guide rails in the unfolded state of the screen. Since the overhanging pieces that restrict the movement of the weight bar member are provided at both ends of the inner side of the door frame, the lower side of the second guide bar member that guides the vertical movement of the weight bar member ends in the middle, so that the weight bar member falls. It enables smooth convolution to the inside of the screen.

In addition, when the screen is unfolded, the weight bar member positioned below the end of the guide rail is in a free state. Abutting the strips makes it possible to increase the flatness of the screen in the unfolded state.

In addition, when the screen folded inside the lower part of the door opening is pulled up and unfolded into a flat closed state, both sides of the weight bar members provided on the screen folded inside the lower part of the door opening are attached to the second guide rails. The screen is guided and moved to the second guide rail along the curved guide rail extending inward from the terminal end, and the screen in the folded state is smoothly and flatly developed to close the door opening.

(Effect of screen opening/closing mechanism)
In addition, the screen opening and closing mechanism provided on the screen door is provided with an upward buckle metal fitting (buckle metal fitting) on the guide bar member at the upper end of the screen, and a buckle device (buckle device) on the upper opening frame of the door frame. is inserted into and held in the buckle device to hold the screen in the expanded closed state, and a predetermined operation of the buckle device releases the buckle metal fittings to fold the screen and open the screen. For example, by pulling the operation lever forward, the buckle metal fitting is released to drop the unfolded screen to easily and reliably open the screen for fire extinguishing and inspection work.

Further, the screen opening/closing mechanism may release the attraction of the magnet that holds the screen in the unfolded closed state, and fold the screen to open the screen. Further, the holding of the screen in the unfolded closed state may be released by operating a push button, and the screen may be folded to be in the open state. , to make it possible to reliably open the screen to carry out fire extinguishing activities and inspection work.

(Effect of screen door inspection operation mechanism)
In addition, since the screen opening/closing mechanism is equipped with an inspection operation mechanism that releases the screen and opens the screen, when inspecting the fire hydrant device, the inspection door of the rear opening can be opened and operated from the rear opening side. To enable an inspection operation of unlocking the holding of a screen and opening it to a folded state.

(Effect of hose extraction from both sides)
In addition, the fire hydrant device is designed so that the hose with nozzle can be taken out from the front opening and the back opening and can be stored freely. can be pulled out to inspect the hose.

In addition, if a vehicle accident involving a fire occurs in a tunnel and the vehicle is stopped in front of the fire hydrant system and cannot be operated, open the lattice door of the observer passage to enter the inspection work space and use the inspection door on the back side. open and pull out the hose to make it possible to fight the fire.

Explanatory drawing showing emergency equipment including a fire hydrant system installed in a tunnel Explanatory drawing showing the fire hydrant device installed on the side wall of the guard passage Explanatory drawing showing the fire hydrant storage part formed under the guard passage Sectional view showing the fire hydrant storage part formed under the guard passage Explanatory drawing showing the fire hydrant device from the front Explanatory drawing showing from the front the state in which the screen door that functions as a fire hydrant door and a fire extinguisher door is opened Explanatory drawing showing the fire hydrant device from the back side Explanatory drawing showing the state from the back side when the screen door that functions as an inspection door is open Cross-sectional view showing the state in which the screen door is opened by the cross section of the hose storage part Explanatory drawing shown from the plane of the fire hydrant device Explanatory drawing showing the assembly and disassembly of the split structure of the screen door for the front and rear openings of the fire hydrant system Explanatory diagram showing the housing structure and storage equipment of the fire hydrant device in a plane cross section Cross-sectional view showing the housing structure of the fire hydrant device and the valve storage structure in cross section The perspective view which showed the housing|casing division structure and hose storage structure of a fire hydrant apparatus Explanatory drawing showing the screen door taken out Perspective view showing the screen door from the back side with the screen open Explanatory drawing showing the screen from the back side Explanatory drawing showing a part of the guide structure at the top of the screen Explanatory drawing showing a part of the guide structure at the bottom of the screen Explanatory diagram schematically showing the movement of the screen until it is lowered and opened by the opening operation Explanatory diagram showing the inspection operation mechanism of the screen door that functions as a fire hydrant door Assembly exploded view showing the mounting structure for the door frame of the buckle device operated from the back side by the inspection operation mechanism Explanatory drawing showing from the front the fire hydrant device in which the maintenance door is provided on the screen door that functions as the fire hydrant door, with the screen open. Explanatory drawing showing a fire hydrant system with a lateral opening door as an inspection door on the back Explanatory diagram showing a fire hydrant system with a side-opening curtain door as an inspection door on the back Explanatory drawing showing a fire hydrant device with a panel member as an inspection door on the back

[Outline of fire extinguishing equipment in the tunnel]
FIG. 1 is an explanatory diagram showing emergency equipment including a fire hydrant system installed in a tunnel. As shown in FIG. 1, a tunnel 10 is provided with a road 16 covered by a kiln-shaped tunnel wall surface 12. In this example, the road 16 has two lanes in one direction.

A guard passage 14 is provided along the tunnel wall surface 12 on the left side of the road 16, and a fire hydrant device 18 is installed on the side wall 14a of the guard passage 14 on the road 16 side. Fire hydrants 18 are installed every 50 meters in the longitudinal direction of the tunnel.

The lower part of the passageway 14 for observers is hollow, and the hollow is used to form a fire hydrant storage part 20 by opening a mounting port in a side wall 14a facing the road 16, and the fire hydrant storage part 20 is connected to the road 16 side. A fire hydrant device 18 is incorporated and installed from the installation port.

Behind the fire hydrant device 18 is an inspection work space 22, and an entrance 24 is provided in the inspector passage 14 that is above the inspection work space 22 to allow the inspector to enter and exit when inspecting the fire hydrant device 18. is closed to the doorway 24 by, for example, a lattice cover.

Further, a duct 38 with a water supply main 26, a conduit 40, etc. laid is formed in the depths of the cavity under the observer passage 14 in the longitudinal direction of the tunnel. Part of the cavity below.

In addition, an automatic valve device 28 is provided on the tunnel wall surface 12 along the observer passage 14, and the automatic valve device 28 applies pressure to the water spray head 30 taken out from the pipe installed on the upper part of the tunnel wall surface 12. It is a device for supplying pressurized fire extinguishing water, and an automatic valve device 28 is installed for each water discharge section with 50 meters in the longitudinal direction of the tunnel as a water discharge section.

On both sides of the tunnel wall surface 12 on the ceiling side, lighting fixtures 32 are arranged at regular intervals along the longitudinal direction of the tunnel.

(Installation structure of fire hydrant device)
2A and 2B are explanatory diagrams showing the fire hydrant device installed on the side wall of the guard passage, FIG. 2(A) showing the front and FIG. 2(B) showing the plane. 3A and 3B are explanatory diagrams showing the fire hydrant storage section formed under the passage for the observers. FIG. 3A shows a partially sectioned front view, and FIG. . FIG. 4 is a cross-sectional view showing the installation state of the fire hydrant device in the fire hydrant storage portion formed under the passageway for observers.

As shown in FIGS. 2 to 4, side walls 14a made of concrete blocks of a predetermined length are arranged continuously in the longitudinal direction of the tunnel wall surface 12, and concrete road boards are placed side by side on the side walls 14a. A guard passage 14 is constructed, and a cavity is formed under the guard passage 14.例文帳に追加A handrail 15 is provided on the upper portion of the side wall 14a.

On the side wall 14a of the observer passage 14, a fire hydrant housing portion 20 is formed with a mounting opening 36 on the side of the road 16 at intervals of 50 meters. installed.

Further, a duct 38 is formed at the back of the cavity under the observer passage 14, and the water supply main pipe 26, electric wire pipe 40, etc. are laid in the duct 38, and the water supply pipe 35 is branched from the water supply main pipe 26. connected to the fire hydrant device 18.

A cavity behind the fire hydrant device 18 serves as an inspection work space 22, an entrance 24 is provided in the inspector passage 14 above the inspection work space 22, and the entrance 24 is closed by an openable and closable lattice lid 34, and a fire hydrant. When inspecting the device 18, the inspector enters the inspection work space 22 from the doorway 24 by opening the grid lid 34a shown by the imaginary line and inspects the fire hydrant device 18 from behind.

For this reason, the housing of the fire hydrant device 18 is open on both the front and the back , and the front opening is provided with a screen door that functions as a fire hydrant door, and the back opening is provided with an inspection screen door that functions as an inspection door. ing. As a result, the inspector who entered the inspection work space 22 opens the inspection screen door provided at the back opening of the fire hydrant device 18, and inspects the hose with nozzle installed inside the housing and the valves including the fire hydrant valve. enable

The structure of the observer passage 14 and the duct 38 shown in FIGS. 1 to 4 is an example, and the case where the cavity under the observer passage and the duct for laying the water supply main and electric conduit are separated separately. However, it is sufficient if the tunnel structure is such that at least the fire hydrant device 18 is installed below the observer passage and an inspection work space can be formed behind it.

Depending on the tunnel structure, it may not be possible to secure sufficient inspection work space 22 for the inspector to enter. The inspector should be able to do the necessary inspection work from the beginning. In this case, the opening corresponding to the doorway 24 provided with the lattice cover 34 is made large enough to facilitate inspection work from the outside.

[Configuration of fire hydrant device]
(Front structure of fire hydrant device)
FIG. 5 is an explanatory view showing the fire hydrant device from the front, and FIG. 6 is an explanatory view showing from the front a state in which a screen door functioning as a fire hydrant door and a fire extinguisher door is opened.

As shown in FIG. 5, the fire hydrant device 18 has a structure in which a fire hydrant housing 42 and a fire extinguisher housing 44 are divided, a screen door 54 functioning as a fire hydrant door is arranged at the front opening of the fire hydrant housing 42, and A screen door 56 functioning as a fire extinguisher door is arranged at the front opening of the fire extinguisher housing 44 .

The screen door 54 provided at the front opening of the fire hydrant housing 42 covers and closes the door opening 48 by unfolding the screen with both sides positioned inside the door frame 46 and holding it with a buckle device 58, By releasing the holding of the screen by operating the lever of the buckle device 58, the screen is dropped and the door opening 48 is opened.

The screen door 56 provided at the front opening of the fire extinguisher housing 44 covers the door opening 52 by unfolding the screen with both sides positioned inside the door frame 50 and holding it with the buckle device 60. By closing and releasing the holding of the screen by operating the lever of the buckle device 60, the screen is dropped and the door opening 52 is opened.

A reporting device door 62 is provided between screen doors 54 and 56 provided on the left and right sides, and a red indicator lamp 64, a transmitter 66 and an answering lamp 68 are provided here, and a telephone jack is provided inside the reporting device door 62. ing.

The red indicator light 64 is always on so that the installation location of the fire hydrant device 18 can be seen from a distance. In the event of a fire, when the transmitter 66 is pressed to turn on the push button switch, a transmission signal is transmitted to the fire receiver in the monitoring room to issue a fire alarm, and along with this, a response signal is sent from the fire receiver and the response lamp is turned on. 68 is lit.

When the screen door 54 provided in the fire hydrant housing 42 shown in FIG. It enters the lower folding part and is folded inward, and the screen door 54 is opened.

A hose housing portion 70 and a valves housing portion 72 are provided in the upper portion of the partition plate 75 of the fire hydrant housing 42 . A hose bucket structure 76 is provided in the hose housing portion 70, and the hose bucket structure 76 has a hose outlet 78 at a position offset to the right from the center of the bucket frame, that is, at a position substantially at the center of the door opening 48 in the left-right direction. Two bucket frames in the horizontal direction and two hose guides in the vertical direction are arranged so as to form a partition. Furthermore, a mounting plate 81 is arranged on the right side of the hose outlet 78 .

A hose 80 is housed in a hose storage section 70 surrounded by a hose bucket structure 76, a partition plate 75 and an inner wall of the housing. Here, the winding of the hose 80 into the hose housing portion 70 is such that the hose 80 is wound to the right when viewed from the front.

The hose outlet 78 and the extended hose guide 113 prevent the hose 80 wound inwardly from collapsing when the hose 80 is pulled out, and prevent the hose 80 from being damaged or broken by rubbing against the door opening 48.例文帳に追加In particular, the protruding hose guide 113 alleviates sudden bending of the hose when the hose 80 is pulled out to the left, enabling smooth pulling out.

A nozzle 82 is attached to the tip of the hose 80 , and the nozzle 82 is composed of a water discharge portion and a handle, and is detachably held by a holder 84 provided on a mounting plate 81 .

In the valve storage section 72 formed on the right side of the hose storage section 70, a water supply valve 86, a fire hydrant valve 87, and an automatic pressure regulating valve 88 are provided in a piping system from a piping connection port 85 that connects piping from the pump equipment to the hose 80. , an automatic drain valve 89 and a maintenance device 90 are provided. Among them, the fire hydrant valve 87 can be opened and closed by a fire hydrant valve open/close lever 92 . A pump activation button 91 used by firefighters is provided in front of the water supply valve 86 .

When the lever of the buckle device 60 is operated in the closed state of the screen door 56 provided in the fire extinguisher housing 44 shown in FIG. It enters the folding part under the plate 77 and is folded inward, and the screen door 56 is opened. A fire extinguisher housing portion 74 is provided in the upper portion of the partition plate 77 of the fire extinguisher housing 44, and two fire extinguishers 94 are housed therein.

In addition, on the upper surface of the partition plate 77, a storage holding member (not shown) such as a partition plate is provided to hold the fire extinguisher 94 at a predetermined storage position, so that the fire extinguisher 94 does not fall. .

( Back structure of fire hydrant device)
FIG. 7 is an explanatory view showing the fire hydrant device from the back side, and FIG. 8 is an explanatory view showing the state in which the inspection screen door is opened from the back side .

As shown in FIG. 7 , the fire hydrant device 18 has an inspection screen door 98 that functions as an inspection door at the rear opening of the fire hydrant housing 42, and the rear opening of the fire extinguisher housing 44 also serves as an inspection door. A functioning inspection screen door 100 is provided.

The inspection screen door 98 provided at the back opening of the fire hydrant housing 42 covers and closes the door opening 95 by unfolding the screen with both sides positioned inside the door opening 95 and holding it with the buckle device 101. Then, by releasing the holding of the screen by operating the lever of the buckle device 101, the screen drops and the door opening 95 is opened.

In addition, the inspection screen door 100 provided at the back opening of the fire extinguisher housing 44 opens the door opening 96 by unfolding the screen with both sides positioned inside the door opening 96 and holding it with the buckle device 102. By covering and closing the screen and releasing the holding of the screen by lever operation of the buckle device 102, the screen drops and the door opening 96 is opened.

When the lever of the buckle device 101 is operated in the closed state of the inspection screen door 98 provided in the fire hydrant housing 42 shown in FIG. 7 to release the holding of the screen, as shown in FIG. It enters the folding part under 75 and is folded inward, and the inspection screen door 98 is opened.

When the inspection screen door 98 is opened, the hose storage section 70 is inspected by visually inspecting the state of the hose 80 and the nozzle 82 that are stored inside the hose bucket structure 76 . In addition, the inspection of the valve storage section 72 is performed by visually inspecting the states of the water supply valve 86, the fire hydrant valve 87, the automatic pressure control valve 88, and the automatic drain valve 89. If necessary, remove the cover of the maintenance device 90, connect a test hose with a nozzle, open the fire hydrant valve open/close lever 92, and conduct a water discharge test to check that it operates normally. Also, the operation to open the screen door 54 functioning as a fire hydrant door shown in FIG. All the work necessary for such inspection can be performed from the back side of the fire hydrant device 18 .

In addition, when the lever of the buckle device 102 is operated to release the holding of the screen in the closed state of the inspection screen door 100 provided at the rear opening of the fire extinguisher housing 44 shown in FIG. 7, as shown in FIG. falls into the folding portion under the partition plate 77 and is folded inward, and the inspection screen door 100 is opened.

Two fire extinguishers 94 are stored in the upper part of the partition plate 77 of the fire extinguisher housing 44, and the state of the fire extinguishers 94 is visually checked. Also, when the expiration date of the fire extinguisher 94 is approaching, the old fire extinguisher is taken out and replaced with a new fire extinguisher.

FIG. 9 is a cross-sectional view showing a state in which the screen door is opened, in cross-section of the hose storage section. As shown in FIG. 9, when the screen door 54 provided at the front opening of the fire hydrant housing 42 and the inspection screen door 98 provided at the rear opening are opened, the respective screens 104 and 106 fall and fall under the partition plate 75. The folded screens 104 and 106 are stored in the side folding storage part 105 in a folded state, and the folded screens 104 and 106 do not jump out.

Therefore, even if the inspection screen door 98 is opened, the screen 106 does not protrude outward and does not interfere with inspection work. In addition, even if the screen door 54 of the front opening is opened for inspection, the screen 104 does not protrude to the road surface side, and inspection can be performed by opening and closing the screen door 54 of the front opening without restricting vehicle traffic in the tunnel.

[Divided structure of housing and screen door]
FIG. 10 is an explanatory view showing the fire hydrant device from the top, and FIG. 11 is an explanatory view showing the assembly and disassembly of the screen door with the split structure for the front opening and the rear opening of the fire hydrant device.

As shown in FIG. 10, the screen door 54 provided at the front opening of the fire hydrant housing 42 and the inspection screen door 100 provided at the rear opening are arranged relative to the fire hydrant housing 42 as shown in FIG. The inspection screen door 100 is divided and detachably provided in each of the front opening and the rear opening of the fire hydrant housing 42 .

With such a divided structure of the housing side and the screen door, the housing and the screen door are manufactured separately at the assembly manufacturing stage, and finally, the screen door is assembled and fixed to the opening of the housing to form a fire hydrant device. can be completed, manufacturing and assembly are easy, productivity is high, and manufacturing cost can be reduced.

In addition, when the screen facing the road is soiled or damaged after installation, the soiled or damaged screen door is removed from the housing and replaced with a separately prepared screen door to enable simple and easy repair.

[Divided housing structure]
(enclosure housing equipment)
FIG. 12 is an explanatory plan view showing the housing structure and storage equipment of the fire hydrant device, and FIG. 13 is a cross-sectional view showing the housing structure of the fire hydrant device and the valve storage section.

As shown in FIGS. 12 and 13, by dividing the housing side with respect to the screen door, the fire hydrant housing 42 is provided with door storage sections 108 and 110 at the front opening and the rear opening, and both the front and the back are provided. In the opened state, a hose bucket structure 76 is assembled and installed in the hose storage part 70 on the upper part of the partition plate 75, and a water supply valve 86 in the valves storage part 72, a fire hydrant valve 87 equipped with a fire hydrant valve opening and closing lever 92, An automatic pressure regulating valve 88, an automatic drain valve 89 and a maintenance device 90 (see FIG. 6) are assembled and installed. Since such assembly and installation work is performed through the openings on both the front and back sides of the fire hydrant housing 42, a sufficient work space can be secured, workability is good, and work efficiency can be enhanced.

Further, the fire extinguisher housing 44 is also provided with door storage portions 109 and 111 at the front opening and the rear opening, and when both the front and the rear are opened, red indication is displayed on the notification device door 62 on the front side shown in FIG. A light 64, a transmitter 66 and an answering lamp 68 are provided, and a telephone jack is installed inside the communication device door 62 and internal wiring work is performed. Also in this case, since the work is carried out through the openings on both the front and back sides of the fire extinguisher housing 44, a sufficient work space can be secured, workability is good, and work efficiency can be improved.

(Divided structure of housing)
FIG. 14 is a perspective view showing a housing division structure and a hose housing structure of a fire hydrant device. As shown in FIG. 14, the housing of the fire hydrant device is divided into a fire hydrant housing 42 and a fire extinguisher housing 44. A partition plate 75 is arranged at the bottom of the fire hydrant housing 42, and a partition plate 75 is provided below the partition plate 75. A folding storage portion 105 is formed, and a hose storage portion 70 and a valves storage portion 72 are formed above the partition plate 75 . In addition, wire passage holes 142 are formed in both side walls of the folding storage portion 105 of the fire hydrant housing 42 .

A hose bucket structure 76 composed of a pipe frame is provided in the hose housing portion 70 of the fire hydrant housing 42 . The hose bucket structure 76 includes a horizontal U-shaped pipe frame 114a horizontally arranged in two stages, a vertical U-shaped pipe frame 114b vertically connecting the upper and lower horizontal U-shaped pipe frames 114a on the front side and the depth side, and It consists of an overhang hose guide 113 connected between the vertical U-shaped pipe frames 114b located on the front side, and further comprises a vertical U-shaped pipe frame 114b on the front side, a lower horizontal U-shaped pipe frame 114a and an overhang hose. A rectangular hose outlet 78 is partitioned by the guide 113 .

The left side of the horizontal U-shaped pipe frame 114a arranged horizontally in two tiers is fixed to the housing partition wall, and the upper ends (three pipe ends) of the vertical U-shaped pipe frame 114b connected vertically on the front side and the depth side are It is fixed to the housing partition wall on the ceiling side, and the lower side is placed on the partition plate 75 . In addition, wire passage openings 142 are opened in the lower portions of the left and right side walls of the fire hydrant housing 42 .

The fire extinguisher housing 44 has a partition plate 77 arranged at its lower portion, a folding storage portion 140 formed below the partition plate 77 , and a fire extinguisher storage portion 74 formed above the partition plate 77 . In addition, the fire extinguisher housing 44 has a wire passage opening 144 formed in a side wall portion facing the wire passage opening 142 on the left side of the fire hydrant housing 42, and a notch 145 formed at the end of the partition plate 77 located thereabove. A terminal box 146 for strong current and a terminal box 148 for weak current are installed on the right inner surface.

The fire hydrant housing 42 and the fire extinguisher housing 44 are fixed by screwing bolts into one screw hole through the other through hole.

[Screen door]
15A and 15B are explanatory diagrams showing the screen door provided at the front opening of the fire hydrant housing. FIG. 15A shows the back side, and FIG. 15B shows the XX cross section. FIG. 16 is a perspective view showing the screen door from the back side with the screen opened.

(Overview of screen door)
The screen door 54 shown in FIG. 15(A) covers and closes the door opening 48 by pulling up the screen 104, holding it by the buckle device 58, and deploying it. On the rear surface of the screen 104, guide bars 116 are provided at each of the upper and lower ends, and two guide bars 116 are arranged at equal intervals therebetween. The guide bar 116 can be vertically moved by a guide portion 115 arranged on the rear surface of the door frame 46 .

Weight bars 118 are arranged on the rear surface of the screen 104 between the four guide bars 116 . The weight bar 118 is also vertically movable by a guide portion 115 arranged on the rear surface of the door frame 46 .

As shown in FIGS. 15B and 16, the guide portion 115 arranged on the rear surface of the door frame 46 is provided with a first guide rail 122 and a second guide rail 124 . The first guide rail 122 placed in front is a sheath-shaped member having a guide groove in the vertical direction. Moving.

A second guide rail 124 is arranged behind the first guide rail 122 via a gap forming a guide groove. Between the first guide rail 122 and the second guide rail 124, a gap functioning as a guide groove is formed in the vertical direction. Stopper portions formed by bending both ends of the weight bar 118 inward are inserted in the guide grooves of the second guide rail 124, and the second guide rail 124 guides and moves the weight bar 118 in the vertical direction. In a state in which the screen 104 is deployed and held and the door opening 48 is closed, it functions as a stopper that restricts the movement of the weight bar 118 in the forward and depth directions, keeps the deployed screen 104 flat, and is similar to a conventional metal fire hydrant. I tried to create a texture equivalent to that of a door.

When the buckle device 58 of the screen door 54 is operated to release the deployment of the screen 104, the screen 104 drops along with the guide bar 116 and the weight bar 118 along the guide portion 115, and as shown in FIG. 104 is folded inside the lower portion of the door opening 48 to open the door opening 48 .

The second guide rail 124 for guiding and moving the weight bar 118 provided on the guide portion 115 on the back side of the door opening 48 has its lower side notched to form the end of the guide rail. A curved guide rail 126 curved inward is formed.

In addition, on both sides of the door opening 48 on the lower side of the curved guide rail 126, projecting pieces 120 are provided obliquely downward. The protruding piece 120 moves up and down but does not move in the depth direction, and the weight bar 118 arranged at the bottom of the unfolded screen 104 is at a position out of the guide groove of the second guide rail 124. As shown in FIG. 15A, stopper portions 118a on both sides of the lowest weight bar 118 are brought into contact with the overhanging piece 120 to restrict the inward movement of the screen. It allows the bottom of 104 to remain flat.

Buckle fittings 130 protruding from the upper end of the screen 104 are attached to the lower inner side of the door opening 48 when the screen 104 is folded together with the guide bar 116 and the weight bar 118. The rotating structure of the bar 116 rotates it outward, and the buckle fitting 130 is laid down so as not to interfere with the hose drawing.

(Screen structure)
FIG. 17 is an explanatory diagram showing the screen taken out from the back side. As shown in FIG. 17, the screen 104 uses a non-combustible, flame-retardant or fire-resistant sheet, and the color of the surface of the sheet is the same predetermined designated color as the door frame 46 .

Guide bars 116 are arranged at equal intervals L between the upper and lower ends of the back surface of the screen 104 and between them, and weight bars 118 are similarly arranged between the guide bars 116 by adhesive and the like.

The guide bar 116 and the weight bar 118 serve as a frame and weight to flatten the screen 104 in the unfolded state, thereby preventing the screen 104 from wrinkling.

The guide bar 116 is a vertically flat plate-shaped rod member, and the weight bar 118 is also a vertically flat plate-shaped rod member. In addition, the guide bar 116 and the weight bar 118 hold the screen 104 in the unfolded state by their own weight, and when the opening operation is performed, the screen 104 is naturally dropped and the door opening 48 is opened with the screen 104 in the folded state. It should be a metal member that can be secured.

The guide bars 116 arranged at the upper and lower ends support rollers 132 at both ends, and the rollers 132 enter the guide grooves of the first guide rails 122 shown in FIGS. is rotatably supported. The guide bar 116 arranged between the upper and lower ends is put in the guide groove of the first guide rail 122 as it is without providing rollers at both ends, and the end thereof is rounded so that it can move smoothly.

Here, the weight bar 118 arranged between the guide bars 116 on the back surface of the screen 104 has a center-to-center spacing of L1 between the guide bars 116 adjacent on the upper side and a center-to-center spacing between the guide bars 116 adjacent on the lower side. Assuming an interval of L2,
L1 > L2
It is arranged so that

That is, the weight bar 118 is arranged not at the center, which is half the arrangement interval of the guide bars 116, but at a position slightly offset downward from the center.

By arranging the weight bar 118 offset downward from the center between the guide bars 116 in this way, when the screen 104 is moved downward to be opened, the weight bar 118 between the guide bars 116 can be moved downward. The weight of the weight bar 118 biases the inward curvature of the provided screen portion, causing deformation such that the screen portion between the guide bars 116 is distorted and broken during descent, or the guide bar 116 is tilted obliquely. It is possible to suppress the deterioration of movement.

A buckle metal fitting 130 is provided approximately in the center of the guide bar 116 arranged at the upper end of the screen 104, and as shown in FIG. By this, the screen 104 is supported in the unfolded state to close the door opening.

When the screen 104 is to be opened, the lever provided on the buckle device 58 is pulled forward to release the screen 104 from being held by the buckle fitting 130, and the screen 104 is moved along the guide portion together with the guide bar 116 and the weight bar 118. Then, the screen 104 that has fallen is folded inside the lower part of the door opening 48 (folding storage portion 105 of the fire hydrant housing 42 shown in FIG. 9) and opened.

(Screen guide structure)
FIG. 18 is an explanatory diagram showing a part of the guide structure on the upper part of the screen door. As shown in FIG. 18, a sheath-like first guide rail 122 having a guide groove 134 opened vertically is arranged on the rear surface of the door frame 46 provided on the screen door. A guide bar 116 arranged on the rear surface of the upper end of 104 is fitted with rollers 132 pivotally supported at both ends thereof.

A second guide rail 124 is arranged following the first guide rail 122 with a predetermined gap in the depth direction, and the gap with the first guide rail 122 forms a guide groove 136 of the second guide rail 124. ing.

The guide grooves 136 of the second guide rails 124 have stopper portions 118a bent inward at both ends of the weight bar 118 arranged on the back surface of the screen 104, and guide the weight bar 118 vertically along the guide grooves 136. In addition, the screen 104 can be kept flat by restricting the movement of the weight bar 118 forward and in the depth direction when the screen 104 is deployed.

Both ends of the screen 104, which is moved up and down by the guide bar 116 and the weight bar 118, are located behind the door frame 46 and do not protrude forward. , the screen 104 does not protrude outward from the door opening 48 and can be securely folded inside the lower portion of the door opening 48.例文帳に追加

FIG. 19 is an explanatory view showing a part of the guide structure below the screen door. As shown in FIG. 19, the second guide rail 124 for guiding and moving the weight bar 118 is cut obliquely downward at a position before reaching the lowest weight bar 118 in the unfolded state of the screen 104 . It forms a terminal end 138 and follows the guide rail terminal end 138 downwardly and inwardly to extend the curved guide rail 126 .

By terminating the lower side of the second guide rail 124 and releasing the restriction in the depth direction of the weight bar 118 on the lower side in this way, the screen 104 that falls due to the operation of the buckle device can be moved to the lower side of the door opening 48 . The curved movement of the screen 104 for folding inward is not hindered.

A guide bar 116 provided at the lower end of the screen 104 rotatably supports rollers 132 pivotally supported at both ends thereof by inserting them into the guide grooves 134 of the first guide rails 122, and the screen 104 is dropped by operating the buckle device. When this is done, the rollers 132 rotate the bottom guide bar 116 inwardly, and this movement causes the screen 104 to swing inwards to ensure that the bottom inward folding of the door opening 48 can begin.

In addition, when the screen 104 is unfolded, the lowermost weight bar 118 is positioned below the guide rail terminal end 138 and is in a free state in which it moves in the depth direction. By arranging the projecting piece 120 on the inner side and contacting the free stopper portion 118a of the weight bar 118 to the projecting piece 120, movement of the weight bar 118 in the depth direction is restricted and flatness is maintained. doing. As the protruding piece 120, a flexible fiber-filled resin sheet or the like that can bend up and down but does not move in the lateral direction is provided.

Further, the curved guide rail 126 extending from the end of the second guide rail 124 pulls up the screen 104 that is in a folded state inside the lower portion of the door opening 48 to close the door opening 48 , and the curved guide rail 126 extends from the inner side of the lower portion in the folded state of the screen 104 . is guided against the curved guide rail 126 , allowing the weight bar 118 to smoothly enter the guide groove 136 of the second guide rail 124 through the guide rail end 138 .

(movement of the screen accompanying the opening operation)
FIG. 20 is an explanatory diagram schematically showing the movement of the screen until it is lowered and opened by the opening operation. Although FIG. 20(A) shows the guide portion in imaginary lines, the guide portion is omitted in FIGS. 20(B) to 20(E).

FIG. 20A shows a closed state in which the screen 104 is deployed, in which the buckle device 130 provided on the guide bar 116 at the upper end is fitted into the buckle device 58 to hold the screen 104 at the deployed position. In this state, when the lever of the buckle device 58 is operated to release the buckle metal fitting 130, the rest of the guide bars 116, excluding the lower end guide bar 116, move along the first guide rail 122, as shown in FIG. 20(B). The screen 104 as a whole begins to descend as the weight bar 118 also begins to descend all at once along the guide groove.

At this time, since the guide bar 116 at the lower end does not descend and is stopped, the part of the screen 104 between the guide bars 116 begins to bend inward as the adjacent guide bar 116 descends. Since the weight bar 118 is arranged on the curved portion of the screen 104 between the guide bars 116, the weight of the weight bar 118 applies a force to push down the curved portion of the screen 104, and the screen 104 as a whole moves down. wear.

In addition, since the guide bar 116 at the lower end is rotatably supported by the first guide rail 122 by the roller 132, the guide bar 116 at the lower end rotates so as to fall inward as the screen 104 falls, thereby causing the guide bar to rotate. The portion of screen 104 between 116 is swung inward to facilitate bending.

Subsequently, as shown in FIG. 20(C), when the second guide bar 116 from the bottom hits the lower end guide bar 116 and stops, the second curved portion is formed on the screen 104 as the upper guide bar 116 descends. is formed. Similarly, as shown in FIG. 20(D), a third curved portion is formed, and finally, as shown in FIG. , opens the door opening 48 .

(Screen door provided at the back opening of the fire hydrant housing)
The inspection screen door 98 provided at the back opening of the fire hydrant housing 42 shown in FIGS. 7 and 8 has the fire hydrant shown in FIGS. It is the same as the screen door 54 provided at the front opening of the housing 42 .

(Screen door provided on fire extinguisher housing)
The screen door 56 provided at the front opening of the fire extinguisher housing 44 shown in FIGS. 5 and 6 and the inspection screen door 100 provided at the rear opening of the fire extinguisher housing 44 shown in FIGS. It has the same structure as the screen door 54 provided at the front opening of the fire hydrant housing 42 shown in FIGS.

(Screen door inspection operation mechanism)
FIG. 21 is an explanatory diagram showing an inspection operation mechanism for a screen door that functions as a fire hydrant door, and FIG. 22 is an exploded view showing a mounting structure for a door frame of a buckle device operated from the back side by the inspection operation mechanism.

As shown in FIG. 21, the buckle device 58 of the screen door 54 provided at the front opening of the fire hydrant housing 42 has a lever 150 on the front side, which holds the buckle metal fitting 130 provided on the guide bar 116 at the upper end of the screen 104. In this state, when the lever 150 is operated forward as shown by a lever 150a indicated by an imaginary line, the buckle metal fitting 130 is released from being held, and the screen 104 can be dropped and opened.

In addition to this, the fire hydrant device of the present embodiment is an inspection operation that allows the screen door 54 provided at the front opening to be opened from the back side when an inspector enters the inspection work space behind the fire hydrant device and performs inspection. We have a mechanism.

In this inspection operation mechanism, a pair of support metal fittings 176 are arranged inside the upper part of the fire hydrant housing 42 facing the buckle device 58 provided on the screen door 54, and an operation rod is inserted into a through hole 178 provided in the support metal fittings 176 from behind. 180 is slidably fitted. The operation rod 180 has its rear end bent into an L shape to form an operation portion 180 a , and its front end faces a predetermined position behind the buckle device 58 .

A stopper ring 181 is fitted to the position of the operating rod 180 between the support metal fittings 176, and a spring 182 is inserted between them to hold the tip of the rod at the initial position.

Attachment of the buckle device 58 to the door frame 46 above the screen door 54 is as shown in FIG. 22, for example. As shown in FIG. 22, the buckle device 58 is provided with a lever 150 that can rotate downward with respect to a box-shaped main body 58a . A through hole 160 is provided for inserting the operating rod 180 shown in FIG.

A rectangular mounting opening 154 is formed in the door frame 46 positioned at the top, and a mounting plate 152 is fixed behind it. A mounting opening 156 is formed in alignment with 154 .

Buckling device 58 is mounted using mounting plate 162 . Mounting plate 162 is secured to the front face of buckle device 58 using four screws 166 . The mounting plate 162 has a through hole 164 facing the through hole 160 of the buckle device 58 .

When the buckle device 58 attached to the mounting plate 162 is fitted into the door frame 46 and the mounting openings 154 and 156 of the mounting plate 152, both upper sides of the mounting plate 162 are pressed against the mounting ribs 152a of the mounting plate 152, and in this state, Screws 168 are screwed into the screw holes of the mounting ribs 152a at the two upper portions to fix them.

Two screw holes are formed on the lower left and right sides of the mounting plate 162. Nuts 172 are inserted so as to sandwich the mounting plate 162 from both sides, screws 170 are fitted, and the tips of the screws 170 are inserted into the mounting plate 152. abut.

The buckle device 58 has an insertion opening for fitting the buckle metal fitting 130 on its lower side. can be adjusted to the optimum position.

21 is pushed forward against the spring 182, the front end of the rod 180a is shown in FIG. The lever 150 is pushed from the back side through the through holes 164 and 160 shown and rotated as shown in the lever 150a, thereby releasing the buckle metal fitting 130 from holding and allowing the screen 104 to drop and be opened.

The inspection operation mechanism of FIG. 21 is an example, and as a simple inspection operation mechanism, as shown in FIG. In this case, the inspector can open the screen 104 by passing a tool such as a screwdriver through the through holes 164 and 160 from the back side and pushing the lever 150 from the back side.

21 and 22 exemplify the inspection operation mechanism of the screen door 54 provided at the front opening of the fire hydrant housing 42. A similar inspection operation mechanism is provided for the screen door 56 as well.

[Fire hydrant device with maintenance door]
FIG. 23 is an explanatory view showing a fire hydrant device in which a maintenance door is provided above a screen door that functions as a fire hydrant door, showing the screen door in an open state from the front.

As shown in FIG. 23, the fire hydrant device 18 has a structure divided into a fire hydrant housing 42 and a fire extinguisher housing 44. A door frame 46 is provided at the front opening of the fire hydrant housing 42, and a door opening 48 of the door frame 46 is provided. A screen door 54 functioning as a fire hydrant door is provided on the lower side of the door, and a maintenance door 184 is provided on the upper side of the door opening 48, and the interior thereof serves as a hose storage section and a valves storage section.

The screen door 54 has a shorter height than the screen door 54 provided to cover the entire front opening of FIG. 22 is basically the same.

The maintenance door 184 opens and closes upward with a hinge 186 and is closed at the closed position by a door lock mechanism using a magnet and a receiving plate. , and the operation of the water tap of the water supply valve 86 and the pump start button 91 shown in FIG.

In this way, even if the user opens the screen door 54, the maintenance door 184 is closed except when the fire brigade is operating, and the user can pull out the hose with the nozzle and operate the fire hydrant valve open/close lever without confusion. By opening 92, fire extinguishing work becomes possible.

In addition, since the fire hydrant device 18 is directly facing the road surface, it is easy for firefighters to open the maintenance door 184 and connect a fire hose to the water hydrant to discharge water, thereby enabling quick firefighting activities. .

[Another embodiment of the inspection door]
(side opening door)
24A and 24B are explanatory diagrams showing a fire hydrant device in which a lateral opening door is provided as an inspection door on the rear surface of the housing. FIG. 24A shows the door closed state, and FIG. 24B shows the door open state.

As shown in FIG. 24(A), the fire hydrant device 18 of the present embodiment is provided with two pairs of laterally opening doors 188 in the door storage portion 112 of the rear opening of the fire hydrant housing 42, and the fire extinguisher housing 44 A set of side-opening doors 190 is provided in the door housing portion 114 with a rear opening.

When an inspector enters the inspection work space formed behind the fire hydrant device 18 and performs inspection, as shown in FIG. Door plates 190a and 190b are opened, and necessary inspections are performed from the opened rear side .

Here, the widths of the door plates 188a, 188b, 190a, 190b are set to be large enough to open into the inspection work space 22 behind the fire hydrant device 18 shown in FIG.

By using the side-opening doors 188 and 190 as the inspection doors provided at the rear opening of the fire hydrant device 18 in this way, the configuration of the inspection doors is reduced compared to the case where the inspection screen doors 98 and 100 shown in FIGS. 7 and 8 are provided. can be simplified and the cost can be reduced.

(curtain door)
25A and 25B are explanatory diagrams showing a fire hydrant device in which a side-opening curtain door is provided as an inspection door on the back of the housing, FIG. 25A shows the door closed state, and FIG. show.

As shown in FIG. 25(A), the fire hydrant device 18 of the present embodiment is provided with a curtain door 192 in the door housing portion 112 of the rear opening of the fire hydrant housing 42, and a door of the rear opening of the fire extinguisher housing 44. A curtain door 198 is provided in the storage section 114 .

The curtain door 192 has a curtain rail 194 arranged above the door housing portion 112, from which two curtains 196 are hung so as to be freely opened and closed, and held in an unfolded state by attraction with a magnet or the like. A curtain rail 200 is arranged above the door housing portion 114 for the curtain door 198, and a single curtain 202 is hung thereon so as to be openable and closable. As the curtains 196, 202, non-combustible, flame-retardant or fire-resistant curtains are used.

When an inspector enters the inspection work space formed behind the fire hydrant device 18 and performs inspection, as shown in FIG. One curtain 202 of the curtain door 198 is opened to the right, and necessary inspections are performed from the opened rear side.

By using the curtain doors 192 and 198 as inspection doors provided at the rear opening of the fire hydrant device 18 in this manner, the configuration of the inspection doors can be reduced compared to the case where the inspection screen doors 98 and 100 shown in FIGS. 7 and 8 are provided. To simplify and reduce costs. In addition, since the curtain doors 192 and 198 are folded in an open state, they hardly protrude into the inspection work space behind them and do not interfere with the inspection work.

(Panel member)
FIG. 26 is an explanatory view showing a fire hydrant device having a panel member as an inspection door on the back .

As shown in FIG. 26 , the fire hydrant device 18 of this embodiment has a panel member 204 at the rear opening of the fire hydrant housing 42 and a panel member 214 at the rear opening of the fire extinguisher housing 44 .

A panel member 204 provided at the rear opening of the fire hydrant housing 42 has handles 206 on the left and right sides of the center, daruma holes 208 on both ends of the upper part, and round holes 210 on both sides of the lower part. It is attached and fixed to the rear opening of the housing 42 .

The panel member 214 provided at the rear opening of the fire extinguisher housing 44 is the same. It is attached and fixed to the rear opening of the fire extinguisher housing 44 with bolts 222 .

For example, to remove the panel member 204, the bolt 212 of the round hole 210 is removed, and the bolt 212 of the bolster hole 208 is loosened. You can easily remove it by pulling it toward you.

By providing the panel members 204 and 214 as the inspection doors provided at the rear opening of the fire hydrant device 18 in this way, the construction of the inspection doors can be simplified and the cost can be reduced.

Instead of separately providing the panel members 204 and 214 for the fire hydrant housing 42 and the fire extinguisher housing 44, one panel member may be provided. Moreover, the attachment of the panel members 204 and 214 is not limited to bolts, and any known appropriate attachment structure for detachably attaching the panel members can be used.

(Other inspection doors)
In addition to the side-opening doors, curtain doors, and panel members shown in FIG. A simple structure such as opening may be used.

(Example in which the rear opening is in an open state)
As another embodiment of the fire hydrant device according to the present invention, the rear opening of the fire hydrant device 18 may be left open without providing a maintenance door such as the above-described screen door, side opening door, or curtain door.

Even if the rear opening of the fire hydrant device 18 is left open, as shown in FIGS. The open rear opening is not visible from the outside and is not directly exposed to exhaust gas, dust, etc. caused by vehicles passing through the tunnel.

[Modification of the present invention]
(fire hydrant device)
For the fire hydrant device shown in the above embodiment, for example, the hoses built in the housing, the valves such as the fire hydrant valve, the configuration and arrangement of the notification device door, and the configuration other than the screen door are arbitrary and appropriate. Configuration may be adopted. In short, it suffices to provide doors to the openings on both sides of the fire hydrant device to solve part or all of the problems of the present application, or to improve even a little.

(Screen opening/closing mechanism)
In addition, in the above embodiment, the buckle device is used to unfold and hold the screen door, but in addition to this, an appropriate screen opening/closing mechanism is used to hold the upper portion of the screen and release the holding by a predetermined operation. can be

For example, as the screen opening/closing mechanism, the screen may be opened by folding the screen by releasing the attraction of the magnet that holds the screen in the unfolded closed state.

Further, as the screen opening/closing mechanism, the screen may be opened by operating a push button to release the screen from being held in the unfolded closed state, and by folding the screen.

(Hose storage part)
In addition, the fire hydrant device may have a structure in which a hose with a nozzle is taken out and stored freely from a front opening and a rear opening as a structure of a hose storage portion of a fire hydrant housing. Therefore, in the event of a fire, the hose with the nozzle can be pulled out from the front opening to extinguish the fire, while at the time of inspection, the hose with the nozzle can be pulled out from the rear opening to inspect the hose.

By adopting a structure in which the hose can be pulled out from both the front and rear openings of the housing in this way, a vehicle accident accompanied by a fire occurs in the tunnel, and the vehicle is stopped in front of the fire hydrant system and cannot be operated. In such a case, open the lattice door of the guard passage to enter the inspection work space, open the inspection door on the back side, pull out the hose from the back opening, and extinguish the fire.

(Upward, horizontal folding of the screen)
In the above embodiment, the screen is opened by folding it downward. However, the screen, which is closed by covering the opening in the unfolded state, may be opened by folding it upward, rightward, or leftward. . In this case, a drive mechanism is provided to move the screen in the opening direction when the screen is released from being held.

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

[Characteristics of the fire hydrant system in the tunnel]
Here, the characteristics of the fire hydrant device in a tunnel according to the present invention can be summarized as the following characteristics 1 to 22.

(Feature 1)
In the tunnel fire hydrant system of the present invention, a freely openable and closable fire hydrant door is provided at the front opening facing the road of the housing containing the hose with the nozzle, and an openable and closable inspection door is provided at the rear opening of the housing. characterized by

(Feature 2)
In the tunnel fire hydrant system, the fire hydrant door and the inspection door cover and close the opening by unfolding and holding the screen with both sides positioned inside the opening frame, and holding the screen. The screen door is designed to open the opening by folding the screen when released.

(Feature 3)
In the tunnel fire hydrant device according to feature 1, the upper opening above the front opening of the housing is provided with a maintenance door that can be opened and closed upward with the upper side as an axis, and the lower opening below the front opening is provided. Provide the fire hydrant door,
The fire hydrant door covers and closes the lower opening by unfolding and holding the screen with both sides positioned inside the opening frame, and by releasing the holding of the screen, folding the screen and folding the screen. It is characterized by a screen door that opens the lower opening.

(Feature 4)
In the tunnel fire hydrant device of Feature 1,
The fire hydrant door covers and closes the front opening by unfolding and holding the screen with both sides positioned inside the opening frame, and by releasing the holding of the screen, folding the screen and folding the screen. With a screen door that opens the front opening,
The inspection door is characterized by being a horizontally opening door that can be opened and closed horizontally or a curtain door that can be opened and closed horizontally.

(Feature 5)
In the in-tunnel fire hydrant device according to any one of features 2 to 4, the housing has a partition plate arranged in the lower horizontal direction to form a screen storage part for storing the screen in a folded state on the lower side, It is characterized in that a valve storage section including a hose storage section and a fire hydrant valve is formed on the upper side of the partition plate.

(Feature 6)
In the tunnel fire hydrant device of Feature 1,
A fire extinguisher housing for housing the fire extinguisher is connected to the housing, a fire extinguisher door that can be opened and closed is provided in the front opening of the fire extinguisher housing facing the road, and the rear opening of the housing opens and closes. A flexible inspection door is provided.

(Feature 7)
In the tunnel fire hydrant device according to feature 6, the fire extinguisher door covers and closes the opening by deploying and holding the screen with both sides positioned inside the opening frame, and holding the screen. The screen is folded to open the opening by releasing the screen door.

(Feature 8)
In the tunnel fire hydrant device of feature 7,
The fire extinguisher door covers and closes the front opening by unfolding and holding the screen with both sides positioned inside the opening frame, and folding the screen by releasing the holding of the screen. A screen door that opens the front opening,
The inspection door is characterized by being a horizontally opening door that can be opened and closed horizontally, a curtain door that can be opened and closed horizontally, or a lid member that can be removed.

(Feature 9)
In the tunnel fire hydrant device according to feature 7 or 8, the fire extinguisher casing has a partition plate arranged in the lower lateral direction to form a screen storage portion for storing the screen in a folded state on the lower side, and the partition A fire extinguisher housing is formed on the upper side of the plate.

(Feature 10)
In the tunnel fire hydrant device according to feature 7 or 8, the screen door has a structure in which the screen closed by covering the opening in the unfolded state is folded upward, downward, rightward or leftward to be opened. characterized by

(Feature 11)
In the tunnel fire hydrant system of any one of features 2, 3, 4, 7 or 8,
The screen door is divided from the housing, and the screen door is detachably provided in the opening of the housing.

(Feature 12)
In the tunnel fire hydrant system of any one of features 2, 3, 4, 7 or 8,
The screen door is
a door frame attached and fixed to the opening of the device main body;
a plurality of guide bar members disposed at upper and lower ends of the back surface of the screen and between them at predetermined intervals;
a plurality of weight bar members arranged between the guide bar members arranged on the back surface of the screen;
It is arranged inside the opening frames on both the left and right sides of the door frame, and in a state in which the left and right sides of the screen are positioned inside the opening frames, the left and right ends of the guide bar members slide in the guide grooves and move vertically. a first guide rail that guides and moves;
a second guide rail that is disposed inside the first guide rail and is in sliding contact with both ends of the weight bar member to restrict movement in the depth direction and to guide and move the weight bar member in the vertical direction;
The screen is held in an unfolded closed state by holding the guide bar member at the upper end of the screen, and the screen is folded into the open state by releasing the holding of the guide bar member at the upper end by a predetermined operation. an opening and closing mechanism;
characterized by comprising

(Feature 13)
In the in-tunnel fire hydrant device according to feature 12, the weight bar member located on the back side of the screen is located adjacent to the lower side of the weight bar member with respect to the distance from the guide bar member located adjacent to the upper side of the weight bar member. It is characterized by shortening the distance from the guide bar member arranged at the same position.

(Feature 14)
In the tunnel fire hydrant device of feature 12,
The plurality of guide bar members arranged on the back surface of the screen are plate-shaped bar members having a rectangular cross section,
the guide bar members arranged at the upper and lower ends of the plurality of guide bar members accommodate the rollers provided at both ends in the guide grooves of the first guide rails and are rotatably supported;
Both ends of the guide bar member arranged between the upper and lower ends are housed in the guide groove of the first guide rail so as not to rotate.

(Feature 15)
In the tunnel fire hydrant device of feature 12,
The second guide rail has a predetermined position between the first weight bar member from the bottom and the second guide bar member from the bottom in a state in which the screen is deployed and the door opening is closed. and integrally forming a curved guide rail that curves and extends inwardly from the end of the guide rail,
Projecting pieces are provided at both inner ends of the door frame for restricting movement in the depth direction of both ends of the weight bar member positioned below the end of the guide rail in the unfolded state of the screen. do.

(Feature 16)
In the tunnel fire hydrant device of feature 12, the screen opening/closing mechanism includes an upward buckle metal fitting (buckle metal fitting) provided on the guide bar member at the upper end of the screen, and a buckle device (buckle device) on the upper opening frame of the door frame. The screen is held in a deployed closed state by inserting and holding the buckle metal fittings in the buckle device, and the screen is released by releasing the buckle metal fittings by a predetermined operation of the buckle device. is folded to be in an open state.

(Feature 17)
In the tunnel fire hydrant device according to feature 12, the screen opening/closing mechanism is characterized in that the screen is opened by folding the screen by releasing the attraction of the magnet that holds the screen in the unfolded closed state.

(Feature 18)
In the tunnel fire hydrant device according to feature 12, the screen opening/closing mechanism is characterized in that the screen is opened by operating a push button to release the screen from being held in the unfolded closed state, and to fold the screen into the open state.

(Feature 19)
In the fire hydrant device in a tunnel according to feature 12, the screen opening/closing mechanism includes an inspection operation mechanism that releases the screen by operating from the back opening to release the screen.

(Feature 20)
In the tunnel fire hydrant device according to any one of features 2, 3, 4, 7, and 8, the screen is noncombustible, flame-retardant, or fire-resistant.

(Feature 21)
In the in-tunnel fire hydrant system of feature 1, the fire hydrant device is characterized in that the hose with the nozzle is freely taken out from the front opening and the back opening and stored.

10: Tunnel 12: Tunnel Wall 14: Observer Passage 14a: Side Wall 15: Handrail 16: Road 18: Fire Hydrant Device 20: Fire Hydrant Storage Unit 22: Inspection Work Space 24: Doorway 26: Water Supply Main 34: Lattice Cover 36: Mounting port 38: Duct 40: Conduit 42: Fire hydrant housing 44: Fire extinguisher housing 46, 50: Door frames 48, 52, 95, 96: Door openings 54, 56: Screen doors 58, 60, 101, 102: Buckle device 62: Communication device door 70: Hose storage part 72: Valves storage part 74: Fire extinguisher storage part 75, 77: Partition plate 76: Hose bucket structure 78: Hose outlet 80: Hose 82: Nozzle 85: Pipe connection Port 86: Water supply valve 87: Fire hydrant valve 88: Automatic pressure regulating valve 89: Automatic drain valve 90: Maintenance device 92: Fire hydrant valve open/close lever 94: Fire extinguisher 98, 100: Inspection screen door 104, 106: Screen 105, 140: Folding housing portion 115: Guide portion 116: Guide bar 118: Weight bar 118a: Stopper portion 120: Overhang piece 122: First guide rail 124: Second guide rail 126: Curved guide rail 130: Buckle fitting 132: Roller 134, 136: Guide groove 138: Guide rail ends 142, 144: Cable entry 150: Lever 152, 162: Mounting plate 160, 164: Through hole 180: Operation rod 188, 190: Laterally opening door 192, 198: Curtain door

Claims (5)

A recess provided in the guard passage provided along the tunnel wall surface and having a mounting opening on the road side;
a fire hydrant device which is embedded so that the front surface of the main body is exposed from the mounting opening of the recess, and has an inspection opening on the rear surface of the main body opposite to the front surface of the main body ;
A work space formed on the back side of the main body of the fire hydrant device embedded in the recess of the recess ;
a doorway formed on the road surface of the observer's passage and allowing entry and exit to the work space;
A fire hydrant facility in a tunnel, characterized by comprising :
In the tunnel fire hydrant system according to claim 1,
An in- tunnel fire hydrant facility comprising a door that can be freely opened and closed on the front surface of the main body of the fire hydrant device .
In the tunnel fire hydrant system according to claim 1 or 2,
The fire hydrant device houses a hose and/or a valve inside,
An in- tunnel fire hydrant installation, wherein said hose and/or valve is serviceable through said service opening.
A method for installing a fire hydrant device,
A fire hydrant device having an inspection opening on the back of the main body is embedded in a recess with a mounting opening on the road side provided in the guard passage along the tunnel wall so that the front of the main body is exposed from the mounting opening. and a work space having an entrance and exit on the road surface side of the observer passage is provided between the back surface of the main body of the fire hydrant device and the bottom surface of the recess in a state where the fire hydrant device is embedded. How to install a fire hydrant system.
A method for performing an inspection of a fire hydrant device, comprising:
A fire hydrant device having an inspection opening on the back of the main body is embedded in a recess with a mounting opening on the road side provided in the guard passage along the tunnel wall so that the front of the main body is exposed from the mounting opening. installed, and with the fire hydrant device embedded and installed, from the work space having an entrance on the road surface side of the observer passage provided between the back surface of the main body of the fire hydrant device and the bottom surface of the recess, the inspection opening A method for inspecting a fire hydrant device, characterized by inspecting the inside of the main body through.

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