JP2021184927A - Tunnel fire hydrant device - Google Patents

Abstract

To enable a tunnel fire hydrant device that can be easily and simply handled from a road side and a watchman's passage side.SOLUTION: The tunnel fire hydrant device equipped with a hose storage part 44 installed so as to be lifted or lowered above or below the road surface of a watchman's passage 14 in a tunnel includes a lifting/lowering mechanism 46 driven so as to be lifted or lowered by supply or discharge of fire fighting water, which is lowered below the road surface of the watchman's passage 14 when fire fighting water is discharged and supports the hose storage part 44, and is lifted above the road surface of the watchman's passage 14 when fire fighting water is supplied and supports the hose storage part. In the hose storage part 44, the top face on the road surface side of the watchman's passage 14 composes substantially the same plane with the road surface of the watchman's passage 14 when fire fighting water is discharged, and when the fire fighting water is supplied, the composition of the substantially the same plane is cancelled and the hose storage part is exposed on the road surface of the watchman's passage 14.SELECTED DRAWING: Figure 3

Description

The present invention relates to an in-tunnel fire hydrant device that pulls out a hose with a nozzle housed in an observer passage and discharges water.

Conventionally, the fire hydrant device installed in a tunnel such as a highway or a motorway has a hose and valves with a nozzle attached to the tip stored in the fire hydrant storage part of a housing equipped with an openable fire hydrant door. , For example, two fire extinguishers are stored in a fire extinguisher storage unit equipped with a fire extinguisher door that can be opened and closed.

Such fire hydrant devices are installed, for example, at intervals of 50 meters along the side wall facing the guard passage provided in the tunnel. The observer passage is provided as a side wall passage that is about 1 meter higher than the road surface, and it is possible to inspect various equipment including the fire hydrant device installed in the tunnel safely without obstructing the passage of vehicles in the tunnel. It is supposed to be.

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

Japanese Unexamined Patent Publication No. 2008-055024 Japanese Unexamined Patent Publication No. 2009-285126 Japanese Unexamined Patent Publication No. 5-123411 Japanese Unexamined Patent Publication No. 2001-009053 Japanese Unexamined Patent Publication No. 2001-518816 Japanese Unexamined Patent Publication No. 2001-524894

However, in the case of the fire hydrant device installed in such a conventional tunnel, since it is installed along the side wall of the tunnel facing the observer passage, the user can observe from the road surface when a fire occurs due to a vehicle accident. It is necessary to reach for the fire hydrant device installed on the side wall of the tunnel beyond the passage, open the fire hydrant door, pull out the hose to extinguish the fire, and the fire hydrant device is installed at a high position away from the road surface. Depending on the person, it may be necessary to go up to the observer passage and operate it out of reach, and some observer passages are provided with handrails, which interfere with fire extinguishing work and are difficult to handle. There was a case.

To solve this problem, a fire hydrant device can be installed by embedding it along the side wall of the observer passage facing the road in the tunnel, but a vehicle fire broke out and the vehicle stopped in front of the fire hydrant door. If so, the stopped vehicle may get in the way and the fire hydrant door may not open and the hose may not be pulled out, or it may take time to operate the fire hydrant device.

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

(Fire hydrant device in tunnel: Elevating mechanism by water supply and drainage of fire extinguishing water)
INDUSTRIAL APPLICABILITY The present invention is a fire hydrant device in a tunnel provided with a hose storage portion installed up and down freely at the lower and upper parts of the road surface of the observer passage in the tunnel.
It is driven up and down by the water supply and drainage of fire extinguishing water, and holds the hose storage part descending to the lower part of the road surface of the observer passage when the fire extinguishing water is drained, and rises to the upper part of the road surface of the observer passage when the fire extinguishing water is supplied. Equipped with a lifting mechanism to hold
The hose compartment is
When the fire extinguishing water is drained, the upper surface of the guard passage on the road surface side forms substantially the same surface as the road surface of the guard passage.
When the fire extinguishing water is supplied, the structure of substantially the same surface is released and the fire extinguishing water is exposed on the road surface of the guard passage.

(Basic effect)
The present invention is an in-tunnel fire hydrant device provided with a hose storage portion that is freely installed at the lower and upper parts of the road surface of the observer passage in the tunnel and that allows the hose to be pulled out and stored, and the hose storage portion is extinguished. It is equipped with an elevating mechanism that descends and holds it at the bottom of the road surface of the observer passage when draining water, and rises and holds it above the road surface of the observer passage when supplying fire extinguishing water. At the time of drainage, the upper surface of the observer passage on the road surface side constitutes substantially the same surface as the road surface of the observer passage, and when the fire extinguishing water is supplied, the configuration of the substantially same surface is canceled and exposed on the road surface of the observer passage. Therefore, when a vehicle accident involving a fire occurs in the tunnel, when a predetermined switch is operated, the hose storage part stored in the observer passage is pushed up by the elevating mechanism and exposed on the road surface of the observer passage. The fire can be extinguished by easily and easily pulling out the hose with a nozzle from the hose storage portion exposed on the observer passage without requiring the opening operation of the fire hydrant door.

(Effect of arrangement of elevating control mechanism and water discharge control mechanism)
In addition, the hose is controlled by a 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 to accommodate the observer passage. Since the elevating control mechanism that controls the supply of fire extinguishing water to the elevating mechanism installed at the bottom of the road surface controls the elevating and lowering, the elevating control mechanism and water discharge control are used in the internal space of the observer passage where space is limited. There is no need to install a mechanism, which makes it possible to easily carry out equipment construction and inspections.

(Effect of double-sided hose drawer structure)
In addition, the front and back of the hose storage section is open when viewed from the road side of the tunnel, and the hose can be pulled out from both the front and back while the hose is raised and held by the elevating mechanism above the fire hydrant elevating port. Therefore, the hose with a nozzle can be easily and easily pulled out from the road side and the observer passage to extinguish the fire.

(Effect of the road surface plate on the upper surface of the hose storage)
In addition, in the hose storage section, a road surface plate is arranged on the upper surface of the observer passage on the road surface side, and the road surface plate is larger than the opening of the fire hydrant elevating port and is closed so as to cover the opening at normal times. When the hose storage part is stored inside and the fire hydrant elevating port is closed, the road surface plate on the upper surface of the housing securely closes the fire hydrant elevating port, and the road surface plate is located beyond the circumference of the fire hydrant elevating port. Even if a person gets on the road surface, it can be reliably supported, and it does not obstruct the passage of the observer's passage during inspection or evacuation.

(Effect of connecting hose)
In addition, since the hose is connected to the water discharge control mechanism using a connecting hose, the movement of the hose storage part is affected even if the hose storage part is separated and arranged so as to be able to move up and down with respect to the fixedly installed water discharge control mechanism. Water for fire extinguishing can be supplied to the hose of the hose storage portion from the water discharge control mechanism and discharged.

(Effect of flexible joint)
In addition, since flexible joints are used for at least one of the connection between the hose and the connecting hose and the connection between the water discharge control mechanism and the connecting hose, the hose storage unit can be raised and lowered with respect to the fixedly installed water discharge control mechanism. The fire extinguishing water can be supplied to the hose of the hose storage unit from the water discharge control mechanism and discharged without being affected by the movement of the hose storage unit even if the hose is separately arranged.

(Effects of fire hydrant valve and its operation)
In addition, the hose is equipped with a water discharge control mechanism so that the supply of fire extinguishing water is controlled by operating the operation switch or operation lever that opens and closes the fire hydrant valve. , The hose with nozzle can be pulled out and the operation switch or operation lever can be operated to open the fire hydrant valve and start water discharge.

(Effect of hydraulic actuator of elevating mechanism)
Further, in the hose storage portion, fire extinguishing water is supplied to one or a plurality of hydraulic actuators provided in the elevating mechanism and rises, fire extinguishing water is drained from the hydraulic actuator and descends, and the elevating mechanism is a fire extinguishing water for the hydraulic actuator. A control valve that controls the supply, a drain valve that drains fire extinguishing water from the hydraulic actuator, and a drainage valve that supplies fire extinguishing water to the hydraulic actuator by controlling the opening of the control valve to raise the hose storage part and drains by closing the control valve. Since it is equipped with an elevating operation switch that drains fire extinguishing water from the hydraulic actuator by opening the valve and enables the hose storage to descend, the hydraulic actuator that uses the water pressure of the fire extinguishing water supplied to the fire hydrant equipment By operation, the hose storage part stored inside the observer passage can be pushed up from the fire hydrant elevating port on the road surface to expose it on the road surface, and there is no need to newly install a drive source for the elevating mechanism, and the equipment configuration can be improved. It will be easier and the equipment cost can be reduced.

(Effect of fire extinguisher storage)
In addition, the hose storage unit is equipped with a fire extinguisher storage unit that houses the fire extinguisher so that it can be freely removed from both the front and back. When this is done, the fire extinguisher storage unit stored in the observer passage is pushed up by the elevating mechanism together with the hose storage unit and exposed on the road surface of the observer passage, without the need to open the fire extinguisher door. The fire can be extinguished by simply and easily taking it out from the fire extinguisher storage section exposed on the observer passage. Further, the fire extinguisher can be easily and easily taken out from the road side and the guard passage to extinguish the fire.

(Effect of rising by operating the transmitter)
In addition, since the hose storage unit is designed so that the elevating mechanism is activated by operating the transmitter to raise the hose, when a fire is reported by operating the transmitter provided on the notification device panel, the elevating mechanism interlocks with this. The hose storage part can be raised and exposed on the road surface of the observer passage, and the hose with a nozzle can be quickly pulled out to extinguish the fire.

(Effect of acoustic alarm when climbing)
In addition, since the hose storage unit sounds an acoustic alarm when ascending due to the operation of the elevating mechanism, when the hose storage unit is raised by the elevating mechanism and pushed up onto the road surface of the observer passage, people around it. Can call attention to.

(Effect of the box-out part of the guard passage)
In addition, when all the conduits and the like are arranged in the management passage, there is no duct under the guard passage and the pipes are filled with concrete. In this case, the hose storage portion is stored in the box punching portion formed by hollowing out from the road surface of the observer passage to the front wall through the shoulder, so that the hose storage portion and the elevating / lowering portion are stored in the observer passage. It is easy to create a space for storing the mechanism, and since the hose storage part and the elevating mechanism can be incorporated from the road side in front, the 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 internal structure of the fire hydrant equipment in the tunnel in a cross section seen from the road surface side. Explanatory drawing showing the internal structure of the fire hydrant equipment in the tunnel in a cross section seen from the side Explanatory drawing which showed embodiment of the water discharge control mechanism and the elevating control mechanism provided in the control mechanism storage part installed in the observer passage. Explanatory drawing showing the state where the hose storage part is raised by the elevating mechanism and exposed on the observer passage in the cross section seen from the road surface side. Explanatory drawing showing the state where the hose storage part is raised by the elevating mechanism and exposed on the observer passage in the cross section seen from the side. Explanatory drawing showing the fire hydrant equipment in the tunnel containing the fire extinguisher from the road side Explanatory drawing showing the internal structure of the fire hydrant equipment in the tunnel containing the fire extinguisher in a cross section seen from the road surface side. Explanatory drawing showing another embodiment of the elevating control mechanism for controlling the supply of fire extinguishing water to the elevating mechanism together with the hydraulic actuator. Explanatory drawing showing the boxed part of the guard passage from the road side

[Overview of fire extinguishing equipment in the tunnel]
FIG. 1 is an explanatory diagram showing a fire hydrant facility installed in a tunnel of a motorway. As shown in FIG. 1, a road 15 is provided in the tunnel 10 constructed by the shield method by being partitioned by a floor slab 18 covered with a cylindrical tunnel wall surface 12, and in this example, the road 15 is provided. , 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. Further, the lower side of the floor slab 18 on which the road 15 is formed is divided into a plurality of sections in the longitudinal direction of the tunnel. For example, the section located under the observer passage 14 is used as the management passage 20. Further, the management passage 20 is used as an emergency evacuation passage in the event of a fire in the tunnel.

The fire hydrant equipment 16 is arranged in the internal space below the guard passage 14 and in the management passage 20. In the fire hydrant equipment 16, a road surface plate to be the upper surface of the hose storage portion 44 is located on the road surface of the observer passage 14, and a fire hydrant sign plate is placed on the front wall 14a of the observer passage 14 facing the road 15. And operation units are arranged. Further, a fire extinguisher box 17 is embedded and installed adjacent to the fire hydrant equipment 16. The fire hydrant equipment 16 and the fire extinguisher box 17 are installed every 50 meters in the longitudinal direction of the tunnel.

Further, the internal space below the observer passage 14 is used as a duct 22, and a conduit 23 or the like is laid behind the duct 22. A water supply main 24 is installed in the management passage 20 under the floor of the observer passage 14 used as the duct 22, and a control mechanism equipped with some equipment of the fire hydrant equipment 16, for example, valves. Etc. are arranged in the management passage 20.

Further, since the internal space of the observer passage 14 can be used as an inspection work space for the fire hydrant equipment 16, when an openable doorway (not shown) is provided in the upper observer passage 14 to inspect the fire hydrant equipment 16. It allows inspectors to come and go.

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

(Exterior structure of fire hydrant equipment)
As shown in FIG. 2, the main part of the fire hydrant equipment 16 is installed in the internal space under the floor of the observer passage 14 provided with the handrail 40, and the observer passage 14 is the installation place of the fire hydrant equipment 16. A fire hydrant door 26 and a notification device panel 28 provided with an operation box 35 are 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 on the front wall as shown in FIG. It is attached to the front surface of the operation box 35 embedded and installed in 14a.

The fire hydrant door 26 is mounted so as to be openable and closable downward centering on the lower hinge 26a, and can be unlocked and opened by pulling the handle 27 toward you. Inside the operation box 35 closed by the fire hydrant door 26, a water tap 90 having a hose connection port and a pump start switch 92 are provided as shown by a dotted line. Therefore, in the event of a vehicle accident involving a fire, the fire brigade opens the fire hydrant door 26, connects the fire hose to the water tap 90, and operates the pump start switch 92 to start the fire extinguishing pump so that the fire can be extinguished. I have to.

The reporting device panel 28 is provided with a red indicator lamp 30, a transmitter 32, and a response lamp 34. The red indicator light 30 is constantly 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 and the push button switch is turned on, the transmission signal is sent to the fire receiver in the monitoring room to issue a fire alarm, and the response signal is sent from the fire receiver accordingly to the response lamp. Turn on 34.

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

Further, the handrail 40 is not provided in the portion of the observer passage 14 in which the fire hydrant equipment 16 is installed, which interferes with the operation of the hose storage portion 44 that rises from the inside and is exposed on the road surface of the observer passage 14. I try not to become.

The panel portion of the notification device panel 28 on which the ascending switch 36a and the descending switch 36b are arranged is slanted with respect to the shoulder portion of the observer passage 14 in order to enable operation from both the road 15 side and the observer passage 14. It may be arranged so as to be located at.

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

A hose storage portion 44 of the fire hydrant equipment 16 is arranged so as to be able to move up and down with respect to the fire hydrant elevating port 42 from below. The hose storage portion 44 includes a box-shaped housing 48 opened on the front and back surfaces, and four frame pipes 52 are arranged in the front and back openings of the housing 48 to form a hose outlet 55 between them. ing. Inside the hose storage portion 44, the hose 54 having the nozzle 56 attached to the tip thereof is stored in an inwardly wound state, and the nozzle 56 attached to the tip of the hose is arranged in the central portion of the inwardly wound hose 54. The nozzle 56 can be taken out from either the front surface or the back surface of the hose.

Further, in the hose storage unit 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 unit 45 arranged in the management passage 20 are provided. Is provided.

The hose accommodating portion 44 is supported by an elevating mechanism 46 so as to be able to move up and down. The elevating mechanism 46 has hydraulic actuators 60 standing upright and arranged at four locations facing the corners of the rectangular bottom of the hose storage portion 44, and the hydraulic actuator 60 is a piston connected to a piston 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 storage portion 44.

A control mechanism storage unit 45 is arranged in the management passage 20 below the internal space in which the elevating 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 an elevating control mechanism for driving the elevating mechanism 46 up and down are provided.

A branch pipe 24a branched from the water supply main 24 is connected to the control mechanism storage unit 45, and fire extinguishing water supplied from the fire extinguishing pump equipment to the water supply main 24 is introduced. Further, the branch pipe 24a is branched to the upper part and is connected to the water tap 90 shown in FIG.

The pipe from the water discharge control mechanism built in the control mechanism accommodating portion 45 is connected to the flexible joint 63 which is the hose connection port of the hose accommodating portion 44 via the connecting hose 62. The connecting hose 62 has a hose length with a margin necessary for connection when the hose storage portion 44 is pushed up from the fire hydrant elevating port 42 of the observer passage 14 and held at the exposed position exposed by the elevating mechanism 46. As a result, even if the hose storage portion 44 moves up and down with respect to the pipe on the fixed side, the hose storage portion 44 can move without disconnecting the connecting hose 62. Further, the movement of the connecting hose 62 generated by the elevating operation is absorbed by the movement of the flexible joint 63.

Further, from the elevating control mechanism built in the control mechanism accommodating portion 45, a pipe for supplying and draining fire extinguishing water is connected to the hydraulic actuator 60 of the elevating mechanism 46.

The number of hydraulic actuators 60 provided in the elevating mechanism 46 can be appropriately set as needed. For example, a hydraulic actuator having a predetermined diameter having a pushing force corresponding to the weight of the hose storage portion 44 is placed in the center. This arrangement may be performed, or similarly, three hydraulic actuators 60 having a total pushing force corresponding to the weight of the hose storage portion 44 may be arranged in a triangular shape.

Further, in the connection between the hose storage unit 44 and the control mechanism storage unit 45, the inside of the observer passage is a connecting hose 62 and the management passage 20 side is a pipe, but the hose storage unit 44 and the control mechanism storage unit 45 are connected. The space may be directly connected by a connecting hose. Also in this case, the connection of the connecting hose to the hose storage portion 44 side and the control mechanism storage portion 45 shall be one or both connected by a flexible joint.

(Water discharge control mechanism)
FIG. 5 is an explanatory diagram showing an embodiment of a water discharge control mechanism and an elevating control mechanism provided in a control mechanism storage unit installed in a guard passage.

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

The remote fire hydrant valve 70 is open-controlled by operating the water discharge switch 38a provided in the hose storage portion 44 shown in FIG. 3, and fire extinguishing water is supplied to the hose storage portion 44 side.
Further, when the water discharge stop switch 38b provided in the hose storage unit 44 shown in FIG. 3 is operated during the water discharge operation, the water discharge stop switch 38b is closed and controlled, and the supply of fire extinguishing water to the hose storage unit 44 is stopped.

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 portion 44 and connected with a link wire, and the fire hydrant valve may be opened / closed by remote control by operating the fire hydrant valve opening / closing lever. ..

(Elevation control mechanism)
As shown in FIG. 5, in the elevating control mechanism 66, a remote control valve 78 using an electric valve is connected by drawing in a branch pipe 24a from the water supply main, and a manual control valve 80 is connected in parallel with the remote control valve 78. Has been done. The secondary side of the remote control valve 78 is connected to the hydraulic actuator 60 shown in FIG. 4 via a pipe via an automatic pressure regulating valve 81, a check valve 82, and an orifice 83. 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, the ascending speed of the hose accommodating portion 44 by the hydraulic actuator 60 can be adjusted.

Since the remote control valve 78, the manual control valve 80, and the drain valve 82 are closed in the normal monitoring state and fire extinguishing water is not supplied to the hydraulic actuator 60 in FIG. 3, the piston of the hydraulic actuator 60 is at the lowest point in the figure. The hose storage unit 44 is stored in the internal space of the observer passage 14, and the fire extinguishing plug elevating port 42 is closed by the road surface plate 50 of the hose storage unit 44.

In the event of a fire caused by a vehicle accident in the tunnel, the remote control valve 78 is controlled to open by operating the ascending switch 36a of the notification device panel 28 shown in FIG. 2, and the hydraulic actuator 60 receives fire extinguishing water via the orifice 83. It is supplied and pushes up the piston in the cylinder and raises the hose storage portion 44 via the piston rod.

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

When the hose storage unit 44 exposed and held on the observer passage 14 is stored, the remote control valve 78 is controlled to close by operating the lower switch 36b of the hose storage unit 44 shown in FIG. 2, and the hydraulic actuator is operated. The supply of fire extinguishing 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 receiving the weight of the hose accommodating portion 44 descends at a slow predetermined speed determined by the orifice 83. , The hose storage unit 44 is stored in the fire hydrant elevating port 42.

[Operation of fire hydrant equipment]
FIG. 6 is an explanatory view showing a state in which the hose storage portion is raised by the elevating mechanism and exposed on the observer passage in a cross section as viewed from the road side, and FIG. It is explanatory drawing which showed the state exposed on the passage in the cross section seen from the side.

(During normal monitoring)
During normal monitoring when a vehicle is passing through the road of the tunnel 10 shown in FIG. 1, as shown in FIGS. 1 to 3, the hose storage portion 44 of the fire hydrant equipment 16 is used for fire extinguishing water from the elevating control mechanism 66. The hydraulic actuator 60 of the elevating mechanism 46 positions the piston at the lowest point, whereby the elevating mechanism 46 accommodates the hose accommodating portion 44 in the internal 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 pressing against the step portion 42a of the fire hydrant elevating port 42, and even if the fire hydrant equipment 16 is installed in the observer passage 14, the passage of a person passing through the observer passage 14. Does not interfere with or pose any danger.

(In case of fire)
On the other hand, when 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 occurred and pushes the transmitter 32 of the notification device panel 28 shown in FIG. 2 to fire in the monitoring room. Is reported, and the completion of the report to the monitoring room side is confirmed by lighting the response lamp 34.

Subsequently, in order to extinguish the fire, the ascending switch 36a provided on the notification device panel 28 is pressed to turn it on. By turning on the rise switch 36a, an open control signal is sent to the remote control valve 78 of the elevating control mechanism 66, and the remote control valve 78 is open-controlled, so that the water for fire extinguishing from the branch pipe 24a is discharged from the remote control valve 78. The piston is raised by the fire extinguishing water sent to the hydraulic actuator 60 of the elevating mechanism 46 via the orifice 83, and pushes up the hose storage portion 44 supported via the piston rod.

For this reason, the road surface plate 50 closing the fire hydrant elevating port 42 of the observer passage 14 is lifted, and the hose storage portion 44 stored inside slowly appears from the road surface and rises to the exposed positions shown in FIGS. 6 and 7. To stop and hold this exposed position.

When the hose storage portion 44 is held in the exposed state on the observer passage 14 in this way, the user can easily and easily take out the nozzle 56 from the road side through the front opening of the housing 48 to easily and easily hose. 54 can be pulled out.

Subsequently, when the user presses and turns on the water discharge switch 38a provided in the exposed hose storage portion 44, an open control signal is output to the remote fire hydrant valve 70 of the water discharge control mechanism 64, the remote fire hydrant valve 70 is opened, and the remote fire hydrant valve 70 is opened. Fire extinguishing water of a specified pressure adjusted by the pressure adjusting valve 74 is supplied to the hose 54 via the connecting hose 62, and the fire extinguishing activity can be performed by discharging water from the nozzle 56.

On the other hand, when the user extinguishes a fire from the observer passage 14, it is easy and easy to take out the nozzle 56 from the back opening of the housing 48 in the hose storage portion 44 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 portion 44 is pressed to turn it on, a closing control signal is output to the remote fire hydrant valve 70 of the water discharge control mechanism 64, and the remote fire hydrant is extinguished. The valve 70 can be closed and the water discharge from the nozzle 56 can be stopped.

Further, in the restoration work after the fire extinguishing work is completed, after draining the hose 54, the hose 54 is stored in the hose storage portion 44 exposed and held on the observer passage 14 in an inwardly wound state. .. Subsequently, by turning on the lowering switch 36b provided on the notification device panel 28, a closing control signal is sent to the remote control valve 78 of the raising / lowering control mechanism 66 to close the remote control valve 78.

In this state, when a staff member enters the management passage 20 and opens the drain valve 84 of the elevating control mechanism 66 provided in the control mechanism storage unit 45, fire extinguishing water is drained from the hydraulic actuator 60, and the weight of the hose storage unit 44 is reduced. In response to this, the elevating mechanism 46 descends, the road surface plate 50 descends to a position where it hits the step portion 42a of the fire hydrant elevating port 42, and stops, and the hose accommodating portion 44 is stored in the internal space of the observer passage 14. ..

The drain valve 84 is a remote drain valve using an electric valve, and the remote control valve 78 is closed and controlled by turning on the down switch 36b, and then the remote drain valve is opened and controlled to enter the management passage 20. The hose storage unit 44 may be lowered to the stored state by remote control without operating the drain valve 84.

If the hose storage unit 44 is not exposed on the observer passage 14 even if the ascending switch 36a is operated due to a failure of the elevating mechanism 46 or the like, the nozzle 56 is taken out and the hose 54 is pulled out by opening the fire hydrant door 26. It is possible and high fail-safety is ensured.

(Inspection of fire hydrant equipment)
When inspecting the fire hydrant equipment 16, a staff member may perform the necessary operations for the inspection from the observer passage 14 side. Further, the inspection work of the elevating mechanism 46 and the control mechanism storage unit 45 is performed by a staff member opening the inspection door provided on the road surface of the observer passage 14 and entering the inside.

Since the fire hydrant door is not opened on the road 15 side or operated from the road side by such inspection work of the fire hydrant equipment 16, it is not necessary to restrict the passage of vehicles in the inspection of the fire hydrant equipment, and the passage is restricted. Inspection work can be done safely without it.

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

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

The housing 48 is divided into a hose storage unit 44 and a fire extinguisher storage unit 94, and the fire extinguisher storage unit 94 is open to both the front surface and the back surface like the hose storage unit 44, and is raised by the elevating mechanism 46. When the fire extinguisher 96 is exposed and maintained on the observer passage 14, the fire extinguisher 96 can be taken out from both the road 15 side and the observer passage 14 side to extinguish the fire.

[Other embodiments of the elevating control mechanism]
FIG. 10 is an explanatory diagram showing another embodiment of the elevating control mechanism for controlling the supply of fire extinguishing water to the elevating mechanism together with the hydraulic actuator.

As shown in FIG. 10, the elevating mechanism of the present embodiment is provided with a single hydraulic actuator 60, and the hydraulic actuator 60 is provided with a piston 65 slidably in the cylinder 61, and the lower and upper cylinders are provided. It is separated into chambers, and a piston rod 67 extends upward from the piston 65.

In the elevating control mechanism 66, the branch pipe 24a from the water supply main is connected to the remote control valve 78 using an electric valve, and the manual control valve 80 is connected in parallel with the remote control valve 78. The secondary side of the remote control valve 78 is connected to the port a of the 4-way ball valve 86 via the check valve 82 and the needle valve 85.

The four-way ball valve 86 has ports a, b, c, and d, is switched and driven by a motor, and the ports a and b are communicated with each other and the ports c and d are communicated with each other at the first switching position. Further, when the 4-way ball valve 86 is switched to the second position, the ports a and c are communicated with each other and the ports b and d are communicated with each other as shown by taking out the 4-way ball valve 86a.

The boat b of the four-way ball valve 86 is connected to the cylinder chamber below the hydraulic actuator 60, the port c is connected to the cylinder chamber above the hydraulic actuator 60, and the port d is drained via the needle drain valve 88. It is connected to the side.

In the needle valve 85 and the needle drain valve 88, the flow rate at the time of opening can be adjusted by the needle, and the ascending speed and the descending speed of the hydraulic actuator 60 can be arbitrarily set.

The operation of the elevating control mechanism 66 in FIG. 10 is as follows. In the event of a fire caused by a vehicle accident in the tunnel, the remote control valve 78 is controlled to open by operating the ascending switch 36a of the notification device panel 28 shown in FIG. 2, and the 4-way ball valve 86 is placed in the first switching position. It is switched, the ports a and b are communicated, and the ports c and d are communicated.

Therefore, the fire extinguishing water from the branch pipe 24a is supplied to the cylinder chamber below the hydraulic actuator 60 via the ports a and b of the remote control valve 78, the check valve 82, the needle valve 85 and the 4-way ball valve 86. To. At this time, the cylinder chamber on the upper side 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, so that the piston 65 rises and passes through the piston rod 67. The hose storage portion 44 is raised and exposed on the observer passage 14.

When the hose storage unit 44 exposed and held on the observer passage 14 is stored, when the lower switch 36b of the hose storage unit 44 shown in FIG. 3 is operated, the four-way ball valve 86 is in the second position indicated by 86a. The ports a and c are communicated with each other, and the ports b and d are communicated with each other.

Therefore, the fire extinguishing water from the branch pipe 24a is supplied to the cylinder chamber above the hydraulic actuator 60 via the ports a and c of the remote control valve 78, the check valve 82, the needle valve 85 and the 4-way ball valve 86. .. At this time, the cylinder chamber on the lower side of the hydraulic actuator 60 is communicated with the drain side via the ports b and d of the four-way ball valve 86 and the needle drain valve 88. Therefore, the piston 65 is lowered, and the hose storage portion 44 is housed inside the watchman passage 14 via the piston rod 67.

[Box-out structure of the guard passage]
FIG. 11 is an explanatory view showing the boxed portion of the guard passage from the road side. In the present embodiment, there is no duct at the lower part of the observer passage 14, and it is filled with concrete, and all the conduits and the like are arranged in the management passage.

With respect to such an observer passage 14, as shown in FIG. 11, a box-shaped portion 25 is formed in advance in which a portion extending from the road surface of the observer passage 14 to the front wall via the road shoulder is hollowed out in a box shape. The hose storage portion 44 and the elevating mechanism 46 shown in FIGS. 3 and 4 can be incorporated and installed in the box removal portion 25 from the front side on the road 15 side, facilitating the construction work.

[Modified example of the present invention]
(Elevating mechanism)
The above embodiment takes as an example an elevating mechanism that directly elevates and lowers the hose storage portion by a hydraulic cylinder, but another mechanism, for example, a pantograph type elevating mechanism may be used.

(Fire hydrant device)
The hoses of the fire hydrant equipment, valves such as the fire hydrant valve, the configuration and arrangement of the notification device, and other configurations shown in the above embodiment are arbitrary, and an appropriate configuration may be adopted.

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

10: Tunnel 12: Tunnel wall surface 14: Observer passage 14a: Front wall 15: Road 16: Fire hydrant equipment 17: Fire hydrant box 18: Floor slab 20: Management passage 22: Duct 23: Electric wire pipe 24: Water supply main pipe 24a : Branch pipe 25: Box removal part 26: Fire hydrant door 28: Notification 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 elevating port 42a: Step 44: Hose storage part 45: Control mechanism storage part 46: Elevating mechanism 48: Housing 50: Road surface plate 52: Frame pipe 54: Hose 55: Hose outlet 56 : Nozzle 60: Hydraulic actuator 61: Cylinder 62: Connecting hose 63: Flexible joint 64: Water discharge control mechanism 65: Piston 66: Elevating control mechanism 67: Piston rod 70: Remote fire hydrant valve 72: Manual fire hydrant valve 74: Pressure adjusting 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 faucet 92: Pump start switch 94: Fire hydrant storage 96: Fire hydrant

Claims (1)

A fire hydrant device in a tunnel equipped with a hose storage unit that can be raised and lowered at the bottom and top of the road surface of the guard passage in the tunnel.
It is driven up and down by the water supply and drainage of fire extinguishing water, and the hose storage portion is lowered and held at the lower part of the road surface of the observer passage when the fire extinguishing water is drained, and the upper part of the road surface of the observer passage when the fire extinguishing water is supplied. Equipped with an elevating mechanism that rises and holds
The hose storage unit
When the fire extinguishing water is drained, the upper surface of the observer passage on the road surface side constitutes substantially the same surface as the road surface of the observer passage.
A fire hydrant device in a tunnel, characterized in that, when the fire extinguishing water is supplied, the configuration of substantially the same surface is released and the fire extinguishing water is exposed on the road surface of the observer passage.

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