JP2023029554A - In-tunnel fire hydrant device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable simple and easy handling from a road side and a monitoring staff passage side.

SOLUTION: An in-tunnel fire hydrant device comprises a hose storage part 44 installed to be freely lifted and lowered to upper and lower parts of a road surface of a monitoring staff passage 14 in a tunnel. The in-tunnel fire hydrant device comprises: a lifting/lowering mechanism 46 that is driven in a liftable/lowerable manner by water supply/discharge of fire extinguishing water and holds the hose storage part 44 by lowering to the lower part of the road surface of the monitoring staff passage 14 at the time of water discharge of fire extinguishing water and by lifting to the upper part of the road surface of the monitoring staff passage 14 at the time of water supply of fire extinguishing water; and a fire hydrant door 26 that is installed so as to open/close a wall surface opening provided on the monitoring staff passage 14's front wall 14a facing a road 15 and, at the time of opening, makes it possible to withdraw a hose 54 to the road side via the wall surface opening from the hose storage part 44 in a state lowered to the lower part of the road surface of the monitoring staff passage 14.

SELECTED DRAWING: Figure 4

COPYRIGHT: (C)2023,JPO&INPIT

Description

TECHNICAL FIELD The present invention relates to an in-tunnel fire hydrant apparatus that discharges water by pulling out a hose with a nozzle housed in a passageway for observers.

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 JP-A-5-123411 Japanese Patent Application Laid-Open No. 2001-009053 JP 2001-518816 A JP-A-2001-524849

However, in such a conventional fire hydrant system installed in a tunnel, since it was installed along the tunnel side wall facing the guard passage, in the event of a fire due to a vehicle accident, the user could see the guard from the road surface. It is necessary to reach out to the fire hydrant installed on the side wall of the tunnel beyond the aisle, open the fire hydrant door, and pull out the hose to extinguish the fire. , Depending on the person, there are times when you have to go up to the lifeguard passage and operate it, and depending on the lifeguard passage, handrails are provided, and the handrails interfere with fire extinguishing work and are difficult to handle. there was a case.

In order to solve this problem, the fire hydrant system should be embedded along the side wall of the guard passage facing the road in the tunnel, but a vehicle fire occurred and the vehicle stopped in front of the fire hydrant door. If there is a stopped vehicle in the way, it may be impossible to open the fire hydrant door and pull out the hose, or it may take time to operate the fire hydrant device.

SUMMARY OF THE INVENTION An object of the present invention is to provide an in-tunnel fire hydrant device that can be simply and easily handled from the road side and the guard passage side.

(Fire hydrant device in tunnel: Elevating mechanism by water supply and drainage for fire extinguishing)
The present invention is an in-tunnel fire hydrant device provided with hose storage units that are vertically installed at the lower and upper portions of the road surface of a guard passage in a tunnel,
It is driven up and down by the supply and drainage of fire-fighting water, and the hose storage part is lowered and held at the bottom of the road surface of the guard passage when the fire-fighting water is drained, and raised and held at the top of the road surface of the guard passage when the fire-fighting water is supplied. a lifting mechanism for
A wall opening provided on the front wall facing the road of the observer's passage is installed so that it can be opened and closed. A fire hydrant door that can be pulled out to the side,
A water hydrant that is installed inside the front wall facing the road of the guard passage and can be operated from the road side when the fire hydrant door is opened,
with
The hose storage part is
When the front opening is exposed by rising above the road surface of the guard passage, the hose can be pulled out from the front opening to the road side.

(basic effect)
The present invention is an in-tunnel fire hydrant device provided with a hose storage section that is installed in the lower and upper portions of the road surface of a guard passage in a tunnel so that it can be lifted and lowered, and that houses a hose that can be drawn out freely. A lifting mechanism that descends and holds at the bottom of the road surface of the lifeguard passage when water is drained, and rises and is held above the road surface of the lifeguard passage when firefighting water is supplied, and the front facing the road of the lifeguard passage A fire hydrant door that can open and close a wall opening provided in the wall, and when opened, allows the hose to be pulled out to the road side through the wall opening from the hose storage part that is lowered to the bottom of the road surface of the guard's passage. , Installed inside the front wall facing the road of the guards' passage, equipped with a hydrant that can be operated from the road side when the fire hydrant door is opened, and the hose storage part rises above the road surface of the guards' passage and opens in front When the is exposed, the hose can be pulled out to the road side from the front opening, so in the event of a vehicle accident involving a fire in the tunnel, the hose stored in the guard passage can be opened by operating a predetermined switch. The storage part is pushed up by an elevating mechanism and exposed on the road surface of the passage for the guards, and the hose with a nozzle can be simply and easily removed from the hose storage part exposed on the passage for the guards without requiring the opening operation of the fire hydrant door. Can be pulled out to extinguish the fire.

(Effects of Arrangement of Elevation Control Mechanism and Water Discharge Control Mechanism)
In addition, the hose is controlled by the water discharge control mechanism installed in the management passage located under the floor slab of the tunnel, and the hose storage section is installed in the management passage, Since the elevation is controlled by the elevation control mechanism that controls the supply of firefighting water to the elevation mechanism installed at the bottom of the road surface, the elevation control mechanism and water discharge control are applied to the interior space of the guard passage, which has limited space. It eliminates the need to provide a mechanism, making it possible to easily perform facility construction and inspection.

(Effect of double-sided hose drawer structure)
In addition, the hose storage section is open on the front and back when viewed from the road side of the tunnel, and the hose can be pulled out from both the front and back in a state where it is raised and held above the fire hydrant entrance by the lifting mechanism. Therefore, the hose with the nozzle can be easily and easily pulled out from the road side or from the guard passage to extinguish the fire.

(Effect of the road surface plate on the upper surface of the hose storage part)
In addition, the hose storage part has a road surface board on the upper surface of the road surface side of the lifeguard passage. When the hose storage part is stored inside and the fire hydrant entrance is closed, the road surface board on the upper surface of the housing securely closes the fire hydrant entrance, and the road surface board is located beyond the circumference of the fire hydrant entrance. Even if a person gets on the road surface board, it can surely support the road surface board, and does not hinder passage of the lifeguard passage during inspection or evacuation.

(Effect of connection hose)
In addition, since the hose is connected to the water discharge control mechanism using a connecting hose, even if the hose storage part is separated from the fixed water discharge control mechanism so that it can be moved up and down freely, the movement of the hose storage part is affected. Therefore, the fire-fighting water can be supplied from the water discharge control mechanism to the hose of the hose housing and discharged.

(Effect of flexible joint)
At least one of the connection between the hose and the connection hose and the connection between the water discharge control mechanism and the connection hose uses a flexible joint. Even if they are separately arranged, the water discharge control mechanism can supply the fire extinguishing water to the hose of the hose housing and discharge it without being affected by the movement of the hose housing.

(Fire hydrant valve and effects of its operation)
In addition, since the supply of fire-fighting water is controlled by operating the operation switch or operation lever that opens and closes the fire hydrant valve provided in the water discharge control mechanism, after the operation to expose the hose storage part on the observer passage , Pull out the hose with the nozzle, operate the operation switch or operation lever to open the fire hydrant valve and start water discharge.

(Effect of hydraulic actuator of lifting mechanism)
In addition, the hose storage unit is raised by supplying fire-extinguishing water to one or more hydraulic actuators provided in the lifting mechanism, and descending when the fire-extinguishing water is discharged from the hydraulic actuator. A control valve that controls the supply, a drain valve that drains fire extinguishing water from the hydraulic actuator, and the opening control of the control valve supplies fire extinguishing water to the hydraulic actuator to raise the hose storage section, and the closing control of the control valve drains water. Since the valve is opened, the water for fire extinguishing is drained from the water pressure actuator and the hose storage part is lowered by the lifting operation switch. By the operation, the hose storage part stored inside the guard passage can be pushed up from the fire hydrant entrance on the road surface and exposed on the road surface. This simplifies the process and enables a reduction in equipment costs.

(Effect of fire extinguisher storage)
In addition, since the hose storage section is equipped with a fire extinguisher storage section that can be freely taken out from both the front and the back, in the event of a vehicle accident involving a fire in the tunnel, a predetermined switch operation is required. When this is done, the fire extinguisher storage part stored in the guard passage is pushed up by the elevating mechanism together with the hose storage part and exposed on the road surface of the guard passage, without requiring the opening operation of the fire extinguisher door. The fire extinguisher can be easily and easily taken out from the fire extinguisher storage section exposed on the guard passage to extinguish the fire. Furthermore, the fire extinguisher can be easily and easily taken out from the road side or from the guard passage to extinguish the fire.

(Effect of rising by operating the transmitter)
In addition, the hose storage unit is raised by operating the transmitter to activate the lifting mechanism. The hose storage part can be raised to expose it on the road surface of the guard passage, and the hose with the nozzle can be quickly pulled out to perform fire extinguishing work.

(Effect of sound alarm when ascending)
In addition, when the hose storage section is raised by the operation of the lifting mechanism, an acoustic alarm sounds. can draw attention to

(Effect of the box-free part of the guard passage)
Also, if all electrical conduits and the like are placed in the management passage, there will be no duct below the guard passage, which will be filled with concrete. In this case, since the hose storage part is stored in the hollowed-out part formed in the part from the road surface of the guard passage to the front wall through the shoulder, It is easy to create a space for storing the mechanism, and since the hose storage part and the lifting mechanism can be incorporated from the road side in front, construction is easy.

Explanatory drawing showing the fire hydrant equipment installed in the shield tunnel Explanatory drawing showing the fire hydrant equipment in the tunnel from the road side Explanatory drawing showing the cross section of the internal structure of the fire hydrant equipment in the tunnel as seen from the road surface Explanatory drawing showing the internal structure of the fire hydrant equipment in the tunnel in a cross section seen from the side Explanatory drawing showing an embodiment of a water discharge control mechanism and a lifting control mechanism provided in a control mechanism storage section installed in the observer passage. Explanatory drawing showing a cross section from the road surface side in which the hose storage section is lifted by the lifting mechanism and exposed above the guard passage. Explanatory drawing showing a cross section seen from the side in a state in which the hose storage section is lifted by the lifting mechanism and exposed above the guard passage. Explanatory drawing showing the fire hydrant equipment in the tunnel containing the fire extinguisher from the road side Explanatory diagram showing the internal structure of the fire hydrant system in the tunnel containing the fire extinguisher in cross section as seen from the road surface Explanatory drawing showing another embodiment of the elevation control mechanism for controlling the supply of fire extinguishing water to the elevation mechanism together with the hydraulic actuator. Explanatory drawing showing the unboxed part of the guard passage from the road side

[Outline of fire extinguishing equipment in the tunnel]
FIG. 1 is an explanatory diagram showing a fire hydrant installation installed in a tunnel of a motorway. As shown in FIG. 1, a tunnel 10 constructed by the shield construction method is partitioned by a floor slab 18 covered with a cylindrical tunnel wall surface 12 to provide a road 15. In this example, , the road 15 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 15 . In addition, the lower side of the floor slab 18 on which the road 15 is formed is partitioned into a plurality of sections in the longitudinal direction of the tunnel. In addition, the management passage 20 is used as an emergency evacuation passage when a fire occurs in the tunnel.

A fire hydrant installation 16 is located in the interior space below the lifeguard passage 14 and in the administration passage 20 . In the fire hydrant equipment 16, a road surface plate serving as the upper surface of the hose storage part 44 is positioned on the road surface of the observer passage 14, and a fire hydrant sign plate is provided on the front wall 14a of the observer passage 14 facing the road 15. , and an operation unit, etc. are arranged. Also, a fire extinguisher box 17 is installed adjacent to the fire hydrant equipment 16 so as to be embedded. Fire hydrants 16 and fire extinguisher boxes 17 are installed every 50 meters in the longitudinal direction of the tunnel.

In addition, the inner space below the observer passage 14 is used as a duct 22, and electric conduits 23 and the like are laid behind the duct 22. - 特許庁A water supply main pipe 24 is installed in the management passage 20 under the floor of the surveillance passage 14 used as a duct 22, and a control mechanism equipped with some equipment of the fire hydrant equipment 16, such as valves. etc. are arranged in the management passage 20 .

In addition, since the interior space of the observer passage 14 can be used as an inspection work space for the fire hydrant equipment 16, an entrance (not shown) that can be freely opened and closed is provided in the upper observer passage 14, and when inspecting the fire hydrant equipment 16 It allows the entry and exit of inspectors.

[Installation structure of fire hydrant equipment]
Figure 2 is an explanatory diagram showing the fire hydrant system in the tunnel from the road side, Figure 4 is an explanatory diagram showing the internal structure of the fire hydrant system in the tunnel as seen from the road surface in cross section, and Figure 5 shows the internal structure of the fire hydrant system in the tunnel. It is explanatory drawing shown in the cross section seen from the side.

(Appearance structure of fire hydrant equipment)
As shown in FIG. 2, the main part of the fire hydrant equipment 16 is installed in the interior space under the floor surface of the guard passage 14 provided with the handrail 40, and the guard passage 14 where the fire hydrant equipment 16 is installed. A notification device panel 28 equipped with a fire hydrant door 26 and an operation box 35 is installed on the upper part of the front wall 14a facing the road, and the fire hydrant door 26 and the notification device panel 28 are located on the front wall as shown in FIG. It is attached to the front surface of an operation box 35 embedded in 14a.

The fire hydrant door 26 is mounted so as to be able to open and close downward around a hinge 26a on the lower side, and can be unlocked and opened by pulling the handle 27 forward. Inside the operation box 35 closed by the fire hydrant door 26, a water hydrant 90 having a hose connection port and a pump start switch 92 are provided as indicated by dotted lines. Therefore, when a vehicle accident involving a fire occurs, the fire brigade opens the fire hydrant door 26, connects the fire hose to the water hydrant 90, and activates the fire pump by operating the pump start switch 92 so that the fire can be extinguished. I have to.

The notification device panel 28 is provided with a red indicator lamp 30, a transmitter 32 and an answer lamp 34. As shown in FIG. The red indicator light 30 is always lit so that the installation location of the fire hydrant equipment 16 can be seen from a distance. In the event of a fire, when the transmitter 32 is pressed to turn on the push button switch, a transmission signal is transmitted to the fire receiver in the monitoring room to issue a fire alarm, and accordingly a response signal is sent from the fire receiver to turn on the response lamp. 34 is lit.

Further, the notification device panel 28 is provided with an up switch 36a and a down switch 36b for raising and lowering the hose housing portion 44 of the fire hydrant equipment 16 arranged in the passageway 14 for the observer.

Furthermore, the handrail 40 is not provided in the part of the guard passage 14 where the fire hydrant equipment 16 is installed. I try not to become

In addition, the panel portion of the notification device panel 28 where the up switch 36a and the down switch 36b are arranged is oblique to the road shoulder portion of the security guard passage 14 in order to enable operation from both the road 15 side and the security guard passage 14. You may arrange so that it may be located in .

(Structure of fire hydrant equipment installed in internal space)
As shown in FIGS. 3 and 4, a rectangular fire hydrant entrance 42 is opened on the road surface corresponding to the installation location of the fire hydrant equipment 16 of the observer passage 14, and at the upper part of the opening edge of the fire hydrant entrance 42 A step portion 42a is formed.

A hose housing portion 44 of the fire hydrant equipment 16 is arranged so as to be vertically movable from the lower side of the fire hydrant entrance 42 . The hose storage unit 44 has a box-shaped housing 48 with front and rear openings, and four frame pipes 52 are arranged in the front and rear openings of the housing 48 to form a hose outlet 55 therebetween. ing. Inside the hose storage part 44, a hose 54 with a nozzle 56 attached to the tip is accommodated in a state of being wound inward, and a nozzle 56 attached to the tip of the hose is arranged in the central part of the inwardly wound hose 54, and a housing 48 is provided. It is possible to take out the nozzle 56 from both the front surface and the rear surface of the.

Further, in the hose storage section 44, a water discharge switch 38a and a water discharge stop switch 38b for opening and closing a remote fire hydrant valve using an electric valve provided in the control mechanism storage section 45 arranged in the management passage 20 are provided. is provided.

The hose housing portion 44 is supported by a lifting mechanism 46 so as to be vertically movable. The elevating mechanism 46 has hydraulic actuators 60 erected at four locations opposite to the corners of the rectangular bottom of the hose housing portion 44. The hydraulic actuators 60 are connected to pistons slidably provided in the cylinder cylinder. The rod is taken out upward, and the tip of the piston rod is fixed to the bottom of the hose housing portion 44 .

A control mechanism storage unit 45 is arranged in the management passage 20 below the internal space where the lifting mechanism 46 is arranged, and the control mechanism storage unit 45 supplies fire extinguishing water to the hose 54 of the hose storage unit 44. A water discharge control mechanism for discharging water and a lifting control mechanism for driving the lifting mechanism 46 to move up and down are provided.

A branch pipe 24a branched from the main water supply pipe 24 is connected to the control mechanism housing portion 45, and fire-extinguishing water supplied to the main water supply pipe 24 from the fire extinguishing pump equipment is introduced. The branch pipe 24a is branched upward and connected to the water tap 90 shown in FIG.

A pipe from the water discharge control mechanism built in the control mechanism housing portion 45 is connected to a flexible joint 63 serving as a hose connection port of the hose housing portion 44 via a connecting hose 62 . The connection hose 62 has a hose length with a margin necessary for connection when the hose storage part 44 is pushed up from the fire hydrant entrance 42 of the guard passage 14 by the elevating mechanism 46 and held at the exposed position, As a result, even if the hose housing portion 44 moves up and down with respect to the pipe on the fixed side, the connecting hose 62 does not come off and the hose housing portion 44 can move. Also, the movement of the connecting hose 62 caused by the up-and-down operation is absorbed by the movement of the flexible joint 63 .

Further, a pipe for supplying fire-fighting water and draining water is connected to the hydraulic actuator 60 of the lifting mechanism 46 from the lifting control mechanism built in the control mechanism housing portion 45 .

The number of hydraulic actuators 60 provided in the elevating mechanism 46 can be set to an appropriate number as necessary. Alternatively, three hydraulic actuators 60 having a total push-up force corresponding to the weight of the hose housing 44 may be arranged in a triangle.

The hose housing portion 44 and the control mechanism housing portion 45 are connected by using a connecting hose 62 in the observer passage and a pipe on the administration passage 20 side. A connection hose may be used to directly connect between them. In this case as well, one or both of the connection hoses to the hose housing portion 44 side and the control mechanism housing portion 45 are connected by flexible joints.

(Water discharge control mechanism)
FIG. 5 is an explanatory diagram showing an embodiment of a water discharge control mechanism and a lifting control mechanism provided in a control mechanism storage section installed in the observer passage.

As shown in FIG. 5, the water discharge control mechanism 64 is connected to a remote fire hydrant valve 70 using an electric valve by drawing a branch pipe 24a from the main water supply pipe, and a manual fire hydrant valve 72 is connected in parallel with the remote fire hydrant valve 70. It is The remote hydrant valve 70 is followed by a pressure regulating valve 74, the secondary of which is connected to the hose housing 44 via a connecting hose 62, as shown in FIG. Furthermore, an automatic drain valve 76 is connected to the secondary side of the pressure regulating valve 74 .

The remote fire hydrant valve 70 is controlled to be opened by operating the water discharge switch 38a provided in the hose storage section 44 shown in FIG.
Further, when the water discharge stop switch 38b provided in the hose housing portion 44 shown in FIG.

Instead of using the remote fire hydrant valve 70 as an electric valve, a fire hydrant valve opening/closing lever may be provided in the hose storage unit 44 and connected with a link wire, and the fire hydrant valve may be opened and closed by remote control by operating the fire hydrant valve opening/closing lever. .

(lifting control mechanism)
As shown in FIG. 5, the lift control mechanism 66 is connected to a remote control valve 78 using a motor-operated valve by drawing a branch pipe 24a from the main water supply pipe, and a manual control valve 80 is connected in parallel with the remote control valve 78. It is The secondary side of the remote control valve 78 is connected via piping to the hydraulic actuator 60 shown in FIG. A drain valve 84 is connected to the primary side of the orifice 83 .

The automatic pressure regulating valve 81 can adjust the set pressure by adjusting the spring load, and by changing the set pressure, it is possible to adjust the rising speed of the hose housing portion 44 by the water pressure actuator 60 .

Since the remote control valve 78, the manual control valve 80, and the drain valve 82 are closed in the normal monitoring state, and the fire-extinguishing water is not supplied to the hydraulic actuator 60 in FIG. The hose housing portion 44 is housed in the interior space of the lifeguard passage 14 , and the fire hydrant hatch 42 is closed by the road surface plate 50 of the hose housing portion 44 .

In the event of a fire caused by a vehicle accident in a tunnel, operating the raise switch 36a of the notification device panel 28 shown in FIG. It is supplied, pushes up the piston in the cylinder, and raises the hose storage part 44 via the piston rod.

In this case, since the amount of fire extinguishing water throttled by the orifice 83 is supplied to the hydraulic actuator 60, the hose housing portion 44 is pushed up at a slow predetermined speed determined by the regulated pressure of the automatic pressure regulating valve 81 and the orifice 83. is exposed on the observer passage 14 and is stopped and held at the full stroke position.

When the hose storage portion 44 exposed and held on the observer passage 14 is to be stored, the remote control valve 78 is closed by operating the lowering switch 36b of the hose storage portion 44 shown in FIG. The supply of fire-fighting water to 60 is stopped. When the drain valve 84 is opened in this state, fire extinguishing water is drained from the hydraulic actuator 60, and the hydraulic actuator 60 of the elevating mechanism 46, which receives the weight of the hose housing portion 44, descends at a slow predetermined speed determined by the orifice 83. , the hose housing portion 44 is housed in the fire hydrant hatch 42 .

[Operation of fire hydrant equipment]
Fig. 6 is an explanatory diagram showing a cross section of the state in which the hose storage unit is lifted by the lifting mechanism and exposed on the guard passage as seen from the road side. It is explanatory drawing which showed the cross section which looked at the state exposed on the channel|path from the side.

(during normal monitoring)
During normal monitoring when a vehicle is traveling on the road of the tunnel 10 shown in FIG. is stopped, the hydraulic actuator 60 of the lifting mechanism 46 positions the piston at the lowest point, whereby the lifting mechanism 46 stores the hose storage portion 44 in the interior space of the observer passage 14, and the housing The road surface plate 50 on the upper surface of the body 48 is supported by being pressed against the stepped portion 42a of the fire hydrant entrance 42, and even if the fire hydrant equipment 16 is installed in the observer passage 14, the traffic of people passing through the observer passage 14 is prevented. does not impede or endanger

(in case of fire)
On the other hand, if a vehicle accident accompanied by a fire occurs in the tunnel 10, the user goes to the fire hydrant facility 16 near the place where the fire broke out, presses the transmitter 32 of the notification device panel 28 shown in FIG. is reported, and the completion of the report to the monitoring room side is confirmed by lighting of the response lamp 34 .

Subsequently, in order to carry out the fire extinguishing work, the raise switch 36a provided on the notification device panel 28 is pushed and turned on. When the lift switch 36a is turned on, an open control signal is sent to the remote control valve 78 of the lift control mechanism 66, and the remote control valve 78 is controlled to open. The extinguishing water supplied to the hydraulic actuator 60 of the lifting mechanism 46 through the orifice 83 and supplied into the cylinder raises the piston, pushing up the hose housing 44 supported by the piston rod.

As a result, the road surface plate 50 closing the fire hydrant entrance 42 of the lifeguard passage 14 is lifted, and the hose housing portion 44 stored inside slowly emerges from the road surface and rises to the exposed position shown in FIGS. stop and hold this exposed position.

When the hose housing portion 44 is held in an exposed state above the guard passage 14 in this way, the user can simply and easily remove the hose by taking out the nozzle 56 through the front opening of the housing 48 from the road side. 54 can be drawn.

Subsequently, when the user presses the water discharge switch 38a provided in the exposed hose storage section 44 to turn it on, an open control signal is output to the remote fire hydrant valve 70 of the water discharge control mechanism 64, and the remote fire hydrant valve 70 opens. Fire-fighting water at a specified pressure adjusted by the pressure regulating valve 74 is supplied to the hose 54 through the connecting hose 62, and the water is discharged from the nozzle 56 to perform fire-fighting activities.

On the other hand, when the user extinguishes the fire from the observer passage 14 side, the nozzle 56 can be easily and easily removed from the back opening of the housing 48 in the hose housing portion 44 which is exposed and held on the observer passage 14. The hose 54 can be easily pulled out to extinguish the fire.

When the fire is extinguished and the fire extinguishing work is completed, when the water discharge stop switch 38b provided in the hose storage part 44 is pushed and turned on, a close control signal is output to the remote fire hydrant valve 70 of the water discharge control mechanism 64, and the remote fire hydrant. Valve 70 is closed and water discharge from nozzle 56 can be stopped.

In addition, in the recovery work after the fire extinguishing work is finished, the hose 54 is drained and then stored in the inward winding state in the hose storage part 44 exposed and held on the observer passage 14.例文帳に追加. Subsequently, by turning on the lowering switch 36b provided on the reporting device panel 28, a closing control signal is sent to the remote control valve 78 of the elevation control mechanism 66 to close it.

In this state, when a staff member enters the management passage 20 and opens the drain valve 84 of the elevation control mechanism 66 provided in the control mechanism storage section 45, fire extinguishing water is drained from the hydraulic actuator 60 and the weight of the hose storage section 44 is reduced. In response, the lifting mechanism 46 descends, the road surface plate 50 descends to the position where it contacts the stepped portion 42a of the fire hydrant entrance 42 and stops, and the hose storage portion 44 is stored in the interior space of the guard passage 14. .

In addition, the drain valve 84 is a remote drain valve using an electric valve, and the remote control valve 78 is controlled to be closed by the ON operation of the lowering switch 36b, and then the remote drain valve is controlled to be opened, so that the management passage 20 can be entered. The hose housing portion 44 may be lowered to the housing state by remote control without operating the drain valve 84 .

If the hose housing 44 is not exposed above the guard passage 14 due to a malfunction of the lifting mechanism 46 or the like, even if the lift switch 36a is operated, the fire hydrant door 26 is opened to extract the nozzle 56 and pull out the hose 54. is possible, and high fail-safety is ensured.

(Inspection of Fire Hydrant Equipment)
When inspecting the fire hydrant equipment 16, a staff member may carry out the necessary operations for inspection from the observer passage 14 side. In addition, the inspection work of the lifting mechanism 46 and the control mechanism housing portion 45 is performed by an attendant who opens an inspection door provided on the road surface of the observer passage 14 and enters inside.

By inspecting the fire hydrant equipment 16 in this manner, the fire hydrant door does not open on the side of the road 15, and there is no need to operate it from the road side. At least inspection work can be done safely.

[Fire hydrant equipment with fire extinguisher storage]
FIG. 8 is an explanatory diagram showing the fire hydrant system in the tunnel containing the fire extinguisher from the road side, and FIG. 9 is an explanatory diagram showing the internal structure of the fire hydrant system in the tunnel containing the fire extinguisher in cross section as seen from the road surface side. .

As shown in FIGS. 8 and 9, the fire hydrant equipment 16 of the present embodiment has a fire extinguisher storage portion 94 integrally formed on the left side of the hose storage portion 44, and for example, two fire extinguishers 96 are stored side by side in the depth direction. are doing.

The housing 48 is divided into a hose storage section 44 and a fire extinguisher storage section 94. The fire extinguisher storage section 94, like the hose storage section 44, is open on both the front and back sides, and is lifted by the lifting mechanism 46. When the fire extinguisher 96 is held exposed on the observer's passage 14, the fire extinguishing work can be performed by taking out the fire extinguisher 96 from both the road 15 side and the observer's passage 14 side.

[Another embodiment of the lifting control mechanism]
FIG. 10 is an explanatory view showing another embodiment of the elevation control mechanism for controlling the supply of fire extinguishing water to the elevation mechanism together with the hydraulic actuator.

As shown in FIG. 10, the elevating mechanism of this embodiment is provided with a single hydraulic actuator 60. The hydraulic actuator 60 has a cylinder 61 in which a piston 65 is slidably provided so that the lower and upper cylinders are moved. Separated into chambers, a piston rod 67 extends upwardly from the piston 65 .

The elevation control mechanism 66 has a remote control valve 78 using an electric valve connected to the branch pipe 24a from the main water supply pipe, and a manual control valve 80 connected in parallel with the remote control valve 78 . The secondary side of remote control valve 78 is connected to port a of four-way ball valve 86 via check valve 82 and needle valve 85 .

A four-way ball valve 86 has ports a, b, c, and d, and is driven by a motor to switch. In the first switching position, ports a, b are communicated and ports c, d are communicated. When the four-way ball valve 86 is switched to the second position, the ports a and c are communicated and the ports b and d are communicated, as shown in the four-way ball valve 86a.

The port b of the four-way ball valve 86 is connected to the lower cylinder chamber of the hydraulic actuator 60, the port c is connected to the upper cylinder chamber of the hydraulic actuator 60, and the port d is drained through the needle drain valve 88. connected to the side.

The needle valve 85 and the needle drain valve 88 can adjust the flow rate at the time of opening by the needle, and the rising speed and the falling speed of the hydraulic actuator 60 can be arbitrarily set.

The operation of the elevation control mechanism 66 of FIG. 10 is as follows. In the event of a fire caused by a vehicle accident in a tunnel, operating the raise switch 36a of the notification device panel 28 shown in FIG. Switched, ports a, b are communicated and ports c, d are communicated.

Therefore, the fire-fighting water from the branch pipe 24a is supplied to the lower cylinder chamber of the hydraulic actuator 60 through ports a and b of the remote control valve 78, the check valve 82, the needle valve 85 and the four-way ball valve 86. be. At this time, the upper cylinder chamber of the hydraulic actuator 60 communicates with the drain side via the ports c and d of the four-way ball valve 86 and the needle drain valve 88. The hose housing portion 44 is lifted and exposed on the guard passage 14 .

When the hose housing portion 44 exposed and held on the observer passage 14 is to be stowed, the descent switch 36b of the hose housing portion 44 shown in FIG. , the ports a and c are communicated and the ports b and d are communicated.

Therefore, the fire extinguishing water from the branch pipe 24a is supplied to the upper cylinder chamber of the hydraulic actuator 60 through ports a and c of the remote control valve 78, check valve 82, needle valve 85 and four-way ball valve 86. . At this time, the cylinder chamber on the lower side of the hydraulic actuator 60 communicates with the drain side via the ports b and d of the four-way ball valve 86 and the needle drain valve 88 . As a result, the piston 65 descends, and the hose housing portion 44 is housed inside the observer passage 14 via the piston rod 67 .

[Unboxed structure of guard passage]
FIG. 11 is an explanatory diagram showing the unboxed part of the guard passage from the road side. In this embodiment, there is no duct in the lower part of the observer passage 14, it is filled with concrete, and all electrical conduits and the like are arranged in the management passage.

As shown in FIG. 11, the guard passage 14 is preformed with a box-shaped cut-out portion 25 that is hollowed out from the road surface of the guard passage 14 to the front wall via the road shoulder. 3 and 4 can be assembled and installed from the front side of the box drawer 25 on the side of the road 15, thereby facilitating the construction work.

[Modification of the present invention]
(lifting mechanism)
In the above-described embodiment, an elevating mechanism that directly elevates the hose storage section by a hydraulic cylinder is taken as an example, but another mechanism such as a pantograph type elevating mechanism may be used.
(fire hydrant device)
The hoses of the fire hydrant equipment, the valves such as the fire hydrant valve, the configuration and arrangement of the reporting device, and other configurations shown in the above embodiments are arbitrary, and appropriate configurations may be adopted.

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

10: Tunnel 12: Tunnel Wall 14: Observer Passage 14a: Front Wall 15: Road 16: Fire Hydrant Equipment 17: Fire Extinguisher Box 18: Floor Slab 20: Management Passage 22: Duct 23: Electrical Conduit 24: Water Supply Main 24a : Branch pipe 25: Box opening 26: Fire hydrant door 28: Reporting device panel 30: Red indicator light 32: Transmitter 34: Response lamp 35: Operation box 36a: Up switch 36b: Down switch 38a: Water discharge switch 38b: Water discharge stop Switch 40: Handrail 42: Fire hydrant entrance 42a: Stepped portion 44: Hose storage portion 45: Control mechanism storage portion 46: Lifting mechanism 48: Housing 50: Road surface plate 52: Frame pipe 54: Hose 55: Hose outlet 56 : Nozzle 60: Hydraulic actuator 61: Cylinder 62: Connection hose 63: Flexible joint 64: Water discharge control mechanism 65: Piston 66: Elevation control mechanism 67: Piston rod 70: Remote fire hydrant valve 72: Manual fire hydrant valve 74: Pressure regulating valve 76 : Automatic drain valve 78: Remote control valve 80: Manual control valve 81: Automatic pressure regulating valve 82: Check valve 83: Orifice 84: Drain valve 85: Needle valve 86: 4-way ball valve 88: Needle drain valve 90: Water tap 92: Pump start switch 94: Fire extinguisher housing 96: Fire extinguisher

Claims (3)

An in-tunnel fire hydrant device provided with hose storage units that can be freely raised and lowered at the lower and upper portions of the road surface of a guard passage in a tunnel,
It is vertically driven by the supply and discharge of fire-fighting water, and the hose storage part is lowered and held at the lower part of the road surface of the guard passage when the fire-extinguishing water is drained, and the upper part of the road surface of the guard passage when the fire-extinguishing water is supplied. an elevating mechanism that elevates and holds the
A wall opening provided in the front wall facing the road of the observer passage is openable and closable, and when opened, the hose storage portion descends to the lower part of the road surface of the observer passage through the wall opening. A fire hydrant door that allows the hose to be pulled out to the road side,
An in-tunnel fire hydrant device comprising:
In the tunnel fire hydrant device according to claim 1,
An in-tunnel fire hydrant apparatus, comprising a water hydrant installed inside a front wall facing the road of the guard passage and operable from the road side when the fire hydrant door is opened.
In the tunnel fire hydrant device according to claim 1 or 2,
The in-tunnel fire hydrant device is characterized in that, when the hose storage part rises above the road surface of the guard passage and the front opening is exposed, the hose can be pulled out from the front opening to the road side.

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