JP2021164882A - Hydrant housing box - Google Patents

Abstract

To make it possible to simply and easily cope with a hydrant device from a road side and an observer passage side and to reduce costs.SOLUTION: A hydrant housing box 30 inside which a hose is stored is embedded and installed in an observer passage 14 in a tunnel 10. On a front surface, on a road 15 side, of the hydrant housing box 30 is disposed a front door 32 so as to be vertically openable/closable. On a top surface, on an observer passage 14 side, of the hydrant housing box 30 is disposed a top door 36 having the same width as that of the front door 32 so as to be openable forward around a door rear edge and openable backward around a door front edge. The hydrant housing box comprises: a first opening/closing mechanism that is made to open the front door 32 and the top door 36 by front opening operation and pivotally supports the top door 36 when the op door 36 is opened backward; and a second opening/closing mechanism that has a configuration same as and having mirror image relation to that of the first opening/closing mechanism, is made to open the top door 36 by backward opening operation, and pivotally supports the top door 36 when the top door 36 is opened forward. The first opening/closing mechanism and the second opening/closing mechanism are disposed symmetrically to each other on a front edge side of the top door 36 and a rear edge side of the top door 36.SELECTED DRAWING: Figure 2

Description

The present invention relates to a fire hydrant storage box that pulls out a hose with a nozzle to release fire extinguishing water or fire extinguishing foam.

Conventionally, a fire hydrant device has been provided as a tunnel emergency equipment installed in a tunnel such as a highway or a motorway, and the fire hydrant device is equipped with a fire hydrant door that can be opened, and a hose with a nozzle at the tip and a fire hydrant valve Contains valves including.

The fire hydrant device is generally installed by being embedded in the tunnel wall surface along the tunnel side wall at intervals of, for example, 50 meters. In the event of a vehicle accident involving a fire, in a tunnel with a guard passage, road users such as the driver of the accident vehicle climb the guard passage by steps installed on the side of the guard passage and tunnel. The fire hydrant door of the fire hydrant device installed on the wall is opened forward and the hose with a nozzle is taken out to extinguish the fire.

The observer passage is provided as a side wall passage elevated to the road, and it is possible to safely inspect various devices including a fire hydrant device installed in the tunnel without obstructing the passage of vehicles in the tunnel. ..

Also, in a tunnel without a guard passage, users such as the driver of the accident vehicle approach the fire hydrant device installed on the tunnel wall surface, and similarly, open the fire hydrant door forward and hose with a nozzle. I take it out and try to extinguish the fire.

Japanese Unexamined Patent Publication No. 2006-181057 Japanese Unexamined Patent Publication No. 2008-055024 Japanese Unexamined Patent Publication No. 2009-285126

By the way, in an urban tunnel made by a shield method or the like, the fire hydrant device cannot be embedded and installed in the tunnel wall surface, and it is necessary to embed and install the fire hydrant device in the side surface (wall surface) of the observer passage.

However, when a fire hydrant device that opens the door forward like a conventional fire hydrant is installed in the observer passage, there is a problem that when the fire hydrant door opens, it exceeds the building limit and jumps out to the road side.

On the other hand, even if this problem can be solved, if the fire hydrant device is embedded and installed along the wall surface of the observer passage facing the road in the tunnel, if a vehicle fire occurs and the vehicle stops in front of the fire hydrant door, The stopped vehicle may get in the way and the fire hydrant door may not open and the hose may not be pulled out. Further, even if it can be operated from the observer passage, it is necessary to bend down and reach out to open the fire hydrant door from the observer passage, which may take time to operate the fire hydrant device.

An object of the present invention is to provide an in-tunnel fire hydrant facility that enables easy and easy handling of a fire hydrant device and cost reduction from the road side and the observer passage side.

(Fire hydrant storage box)
The present invention is a fire hydrant storage box arranged in a guard passage provided along the wall surface of a tunnel and one step higher than the road surface.
A housing buried under the guard passage and containing a hose,
In the front door opening formed on the road side surface of the housing, the front door arranged so that it can be opened and closed in the vertical direction,
The upper door opening formed on the side of the observer passage surface of the housing is pivotally supported so that the door can be opened forward with the trailing edge side of the door as an axis, and can be freely opened rearward with the front edge side of the door as an axis. The upper door, which has the same width as the front door,
When the front door is unlocked by the front opening operation and the front door is dropped and opened, the upper door is unlocked and the upper door is opened forward, and when the upper door is opened rearward, the front of the upper door is opened. The first opening / closing mechanism that supports the edge side so that it can be opened and closed freely,
It has the same configuration as the first opening / closing mechanism, which has a mirror image relationship. The second opening and closing mechanism that supports the shaft so that
With
The first opening / closing mechanism and the second opening / closing mechanism are characterized in that they are symmetrically arranged on the front edge side of the upper door and the rear edge side of the upper door.

(1st opening / closing mechanism)
The first opening and closing mechanism is
A pair of first rod rods that are connected to both sides of the front opening handle arranged on the front edge side of the front door and are pulled in by operating the front opening handle.
Each of the tips of the pair of first rod rods was connected to the first rod mounting shaft via a first rod connecting portion in which a first U-shaped link member opened rearward in a horizontal plane in a U-shape was fixed in the axial direction. 1st hinge member and
A first hinge receiving member having a shaft hole into which the first hinge member can be freely retracted and retracted.
A first urging member that urges the first hinge member toward the first hinge receiving member,
A front door hanger that is placed on the back side of the front door and locks the first hook member on the first rod mounting shaft side of the first rod connecting portion in a non-operated state of the front opening handle to hold the front door in the closed position. When,
When the first rod rod is pulled in by operating the front opening handle, the first hook member is moved by pulling in the first U-shaped link member of the first rod connecting portion to the position of the first hook member. The front door is dropped and opened, and the first hinge member submerged in the first hinge receiving member is pulled out against the urging of the first urging member to bring the upper door forward. Let it open.

(Second opening / closing mechanism)
The second opening and closing mechanism is
A pair of second rod rods connected to both sides of the rear opening handle arranged on the rear edge side of the upper door and pulled in by operating the rear opening handle.
Each of the tips of the pair of second rod rods was connected to the second rod mounting shaft via a second rod connecting portion in which a second U-shaped link member opened forward in a horizontal plane in a U-shape was fixed in the axial direction. 2nd hinge member and
A second hinge receiving member having a shaft hole into which the second hinge member can be freely retracted and retracted.
A second urging member that urges the second hinge member toward the second hinge receiving member side,
An upper door hanger portion that is arranged on the back surface of the housing and locks the second hook member on the second rod mounting shaft side of the second rod connecting portion in a non-operated state of the rear opening handle to hold the upper door in the closed position. When,
When the second rod rod is pulled in by operating the rear opening handle, the second hook member is moved by pulling in the second U-shaped link member of the second rod connecting portion to the position of the second hook member. The second hinge member, which is submerged in the second hinge receiving member, is pulled out against the urging of the second urging member to open the upper door rearward.

(Handle lock of the first opening / closing mechanism)
In the first opening / closing mechanism, the link piece of the first U-shaped link member fixed following the first rod mounting shaft extends rearward to form the first lock piece, and the upper door is the first hinge on the front edge side. When the member is opened backward with the member as the axis and stands up, the movement of the first rod connecting portion in the rod retracting direction is restricted by the contact of the first lock piece with the first hook member, and the front opening handle is opened. Lock it.

(Handle lock of the second opening / closing mechanism)
In the second opening / closing mechanism, the link piece of the second U-shaped link member fixed following the second rod mounting shaft extends forward to form the second lock piece, and the upper door is the second hinge on the trailing edge side. When the member is opened forward with the member as the axis and stands up, the movement of the second rod connecting portion in the rod retracting direction is restricted by the contact of the second lock piece with the second hook member, and the front opening handle is opened. Lock it.

(Axial load reduction mechanism)
A shaft load reducing mechanism is provided to reduce the load applied to the shaft on the front edge side of the door in the closed state by locking the first opening / closing mechanism of the upper door.

(Front door push-up mechanism)
As an axial load reduction mechanism, a predetermined push-up force is applied to the upper door in a closed state by locking the first opening / closing mechanism of the upper door, and when the lock of the upper door is released, the front door resists the push-up force. A front door push-up mechanism is provided to drop and open the door.

(Magnetic adsorption mechanism)
(Magnetic adsorption mechanism)
As an axial load reduction mechanism, magnetic attraction is performed between the upper door and the front door opening in a closed state by locking the first opening / closing mechanism of the upper door, and when the lock of the upper door is released, magnetic attraction is resisted. A magnetic attraction mechanism is provided to drop and open the front door.

(Front door assist mechanism)
A door opening urging mechanism provided with an urging member that assists an opening force for opening the upper door forward and backward is provided between the upper door and the housing, and the urging member is, for example, a gas spring.

(Basic effect)
The present invention is a fire extinguisher storage box arranged in an observer passage provided one step higher than the road surface along the wall surface of the tunnel, and has a housing embedded under the observer passage and containing a hose. The front door opening formed on the road side surface of the housing, the front door arranged so as to be openable and closable in the vertical direction, and the upper door opening formed on the surface of the housing on the observer passage surface side. The upper door has the same width as the front door, which is pivotally supported so that it can be opened freely with the rear edge side of the door as the axis, and the front door can be opened freely with the front edge side of the door as the axis. The upper door is unlocked and dropped to open it, and the upper door is unlocked to open forward, and when the upper door is opened rearward, the front edge side of the upper door is pivotally supported so that it can be opened and closed. It has the same configuration as the 1 opening / closing mechanism and the 1st opening / closing mechanism, and the rear door is unlocked by the rear opening operation to open the rear door. A second opening / closing mechanism for pivotally supporting the door so that it can be opened / closed is provided. In the event of a fire, when the user operates the front door opening handle on the front of the door, the front door facing the road is slid open and the upper door is opened in the depth direction, and the front upper part of the fire extinguisher storage box is opened. And the upper surface is greatly opened, and the hose with a nozzle can be easily and easily pulled out from the hose storage portion to extinguish the fire.

In addition, if the vehicle stops in front of the fire hydrant device and the user cannot operate from the road side, the user climbs the observer passage, bends down and operates the rear opening handle, and the upper door moves to the road side. The hose is opened after opening, and the hose with a nozzle can be easily and easily pulled out from the hose storage portion to extinguish the fire without being hindered by the stopped vehicle.

In addition, since the upper door functions as a fence when it opens rearward to the road side, there is a risk that the user will fall to the road side when pulling out the hose with a nozzle from the upper opening, and it will be taken out from the inside. It is also possible to prevent the nozzle from dropping to the road side.

Further, the first opening / closing mechanism functions as an opening / closing mechanism for the front door and a closing / releasing mechanism when the upper door is opened forward, and at the same time, functions as a hinge mechanism when the upper door is opened rearward. It functions as a closing release mechanism when the upper door is opened rearward, and at the same time it functions as a hinge mechanism when the upper door is opened forward. Allows the opening operation of.

(Effects of the first opening / closing mechanism and the second opening / closing mechanism)
Further, the first opening / closing mechanism is connected to both sides of the front opening handle arranged on the front edge side of the front door, and is pulled in by the operation of the front opening handle, the pair of first rod rods, and the tips of the pair of first rod rods. A first hinge member connected to each of the first rod mounting shafts via a first rod connecting portion in which a first U-shaped link member opened rearward in a horizontal plane in a U-shape is fixed in the axial direction, and a first On the back side of the front door, the first hinge receiving member having a shaft hole into which the hinge member can be freely retracted, the first urging member for urging the first hinge member to the first hinge receiving member side, and the back side of the front door. The front door is provided with a front door hanger that locks the first hook member on the first rod mounting shaft side of the first rod connecting portion and holds the front door in the closed position in a non-operated state of the front opening handle. When the first rod rod is pulled in by operating the opening handle, the first hook member is locked by pulling in and moving the first U-shaped link member of the first rod connecting portion to the position of the first hook member. It is configured to release and drop the front door to open it, and pull out the first hinge member submerged in the first hinge receiving member against the urging of the first urging member to open the upper door forward. The second opening / closing mechanism is connected to both sides of the rear opening handle arranged on the rear edge side of the upper door, and is pulled in by the operation of the rear opening handle and the tip of the pair of second rod rods. A second hinge member and a second hinge member, each of which is connected to the second rod mounting shaft via a second rod connecting portion in which a second U-shaped link member opened forward in a horizontal plane in a U-shape is fixed in the axial direction. A second hinge receiving member having a shaft hole fitted so that the hinge member can freely appear and disappear, a second urging member for urging the second hinge member toward the second hinge receiving member side, and a back surface of the housing. It is provided with an upper door hanger portion that locks the second hook member on the second rod mounting shaft side of the second rod connecting portion and holds the upper door in the closed position in a non-operated state of the rear door opening handle. When the second rod rod is pulled in by operating the opening handle, the second hook member is locked by pulling in and moving the second U-shaped link member of the second rod connecting portion to the position of the second hook member. In addition to releasing the door, the second hinge member submerged in the second hinge receiving member is pulled out against the urging of the second urging member to open the upper door rearward. Therefore, for example, the first Taking the opening / closing mechanism as an example, the first hinge member on the tip side becomes the first hinge receiving portion by pulling in the first rod rod by operating the front opening handle. It is pulled out of the material to release the lock, and at the same time, the U-shaped open portion of the first U-shaped link member moves to the position of the first hook member fixed to the front door to release the lock. As a result, the front door can be opened by sliding down.

Further, regarding the second opening / closing mechanism, the second hinge member on the tip side is pulled out from the second hinge receiving member by pulling in the second rod rod by operating the rear opening handle, and the locking is released, and at the same time, the second. The U-shaped open part of the U-shaped link member moves to the position of the second hook member fixed to the back of the housing and is released from the lock, so that the lock on the trailing edge side of the upper door is released. , Can be opened later.

Further, the first opening / closing mechanism and the second opening / closing mechanism are different in that the first hook member is fixed to the back surface of the front door or the second hook member is fixed to the back surface of the housing, but other than that. The configuration is basically the same, the mechanical structure is simple, the parts can be shared, and high productivity can be obtained, so that the cost can be reduced.

(Effect of locking the handle)
Further, in the first opening / closing mechanism, the link piece of the first U-shaped link member fixed following the first rod mounting shaft extends rearward to form the first lock piece, and the upper door is the first on the front edge side. 1 When the hinge member is opened backward with the hinge member as the axis and is erected, the movement of the first rod connecting portion in the rod retracting direction is restricted by the contact of the first lock piece with the first hook member to open the front. The handle is locked, and the second opening / closing mechanism extends the link piece of the second U-shaped link member fixed following the second rod mounting shaft forward to form the second lock piece, and the upper door is rearward. When the second hinge member on the edge side is opened forward as the axis and stands up, the movement of the second rod connecting portion in the rod retracting direction is restricted by the contact of the second lock piece with the second hook member. Because the front opening handle is locked, even if you try to operate the rear opening handle with the upper door opened forward, the handle is locked and does not move because the pull-in movement of the rod rod is blocked. It is possible to reliably prevent a problem that the hinge part of the trailing edge of the door is pulled in and comes off when the door is opened in front.

Also, even if you try to operate the front door with the upper door open backward, the handle is locked and does not move because the pull-in movement of the rod rod is blocked, and the front door is opened with the upper door rear open. It is possible to reliably prevent a problem that the hinge portion of the front edge of the upper door is pulled in and comes off at the same time when the lock is released and the door slides down to be released.

(Effect of shaft load reduction mechanism)
In addition, since a shaft load reduction mechanism is provided to reduce the load applied to the shaft on the front edge side of the door in the closed state due to the locking of the first opening / closing mechanism of the upper door, the hinge fitted in the hinge receiving portion of the first opening / closing mechanism. The weight of the front door is added to the first rod connecting part where the member and the first hook claw are locked, and a strong operating force is required to operate the front opening handle that pulls in the rod rod, which makes it difficult to operate, but the axial load. The reduction mechanism reduces the axial load, reduces the operating force of the front opening handle, and makes it easy to operate.

(Effect of front door push-up mechanism)
Further, as an axial load reducing mechanism, a predetermined pushing force is applied to the upper door in a closed state by locking the first opening / closing mechanism of the upper door, and when the locking of the upper door is released, the pushing force is resisted. Since the front door push-up mechanism for dropping and opening the front door is provided, for example, the operating force of the front door can be reduced to 49 Newton or less, which is required for tunnel fire extinguishing equipment, so that anyone can operate it.

(Effect of magnetic adsorption mechanism)
In addition, as an axial load reduction mechanism, magnetic attraction is performed between the upper door and the front door opening in a closed state by locking the first opening / closing mechanism of the upper door, and when the lock of the upper door is released, magnetic attraction is applied. Since a magnetic attraction mechanism is provided to drop and open the front door against it, the simple structure of providing a magnet and a magnet receiver makes it possible to reduce the operating force of the front opening handle so that anyone can operate it.

(Effect of front door assist mechanism)
Further, a door opening urging mechanism provided with an urging member for assisting the opening force for opening the upper door forward and backward is provided between the upper door and the housing, and the urging member is, for example, a gas spring. By unlocking the upper door, the upper door can be opened automatically or with a light force with the assistance of the door opening urging mechanism.

In addition, since the push-up force by the gas spring is applied to the upper door when the upper door is closed, the push-up force is applied to the front door via the upper door, the axial load of the first opening / closing mechanism is reduced, and the front opening handle The operating force is lightened and it can be easily operated.

Explanatory drawing showing tunnel emergency equipment including fire hydrant equipment installed in a shield tunnel Explanatory drawing showing the internal structure of the fire hydrant storage box from the front and the plane Explanatory drawing showing the internal structure of the fire hydrant storage box in cross section when the front door is opened, the upper door is opened in front, and the upper door is opened in the rear. Explanatory drawing showing the first opening / closing mechanism and the second opening / closing mechanism in a closed state of the front door and the upper door in a cross section and a plane viewed from the front. Explanatory drawing showing the first opening / closing mechanism and the second opening / closing mechanism in a closed state of the front door and the upper door in a cross section viewed from the side. Perspective view showing the first opening / closing mechanism in the closed state of the front door and the upper door as viewed from the inside of the housing. FIG. 6 is a perspective view showing a lock piece formed in a U-shaped link by partially breaking. Explanatory drawing showing the unlocking operation of the front door and the upper door by the first opening / closing mechanism when the front opening handle is operated in a cross section and a plane viewed from the front. Explanatory drawing showing the unlocking operation of the front door and the upper door by the first opening / closing mechanism when the front opening handle is operated in a cross section viewed from the side. Explanatory drawing showing the locking operation of the rod mounting shaft by the lock piece of the second opening / closing mechanism in the state where the upper door is opened forward in a cross section viewed from the side. Explanatory drawing showing the unlocking operation of the upper door by the second opening / closing mechanism when the rear opening handle is operated. Explanatory drawing showing the unlocking operation of the upper door by the second opening / closing mechanism when the rear opening handle is operated in a cross section viewed from the side. Explanatory drawing showing the locking operation of the rod mounting shaft by the lock piece of the first opening / closing mechanism in the state where the upper door is opened rearward in a cross section viewed from the side. Explanatory drawing which showed the structure of the link mechanism which pulls and drives the rod rod provided in the front opening handle. Explanatory drawing showing the embodiment of the fire hydrant storage box provided with the front door push-up mechanism on the front door from the front. Explanatory drawing showing a cross section of a fire hydrant storage box provided with a front door push-up mechanism on the front door when the front door is closed and when the front door is opened. Explanatory drawing showing the embodiment of the fire hydrant storage box provided with the magnetic adsorption mechanism on the front door from the front. Explanatory drawing showing the appearance of the fire hydrant storage box from the front, the plane and the side Explanatory drawing showing the water discharge control mechanism in cross section as seen from the road side together with the fire hydrant storage box on the observer passage side.

[Overview of emergency tunnel equipment]
FIG. 1 is an explanatory diagram showing tunnel emergency equipment including a fire hydrant equipment installed in a tunnel of a motorway. As shown in FIG. 1, the inside of the tunnel 10 constructed by the shield method is covered with a cylindrical tunnel wall surface 12, and a road 15 is provided by being partitioned by a floor slab 18, and in this example, the road 15 is provided. Road 15 has two lanes in one direction.

An observer passage 14 is provided along the tunnel wall surface 12 on the left side of the road 15 partitioned by the floor slab 18, and the internal space below the observer passage 14 is used as a duct 22 and conduits and the like are laid. .. The observer passage 14 has a size of, for example, 90 cm in height and 70 cm in width.

The lower side of the floor slab 18 on which the road 15 is formed is divided into a plurality of sections in the lateral direction of the tunnel. For example, the section located under the observer passage 14 is used as the management passage 20 and also. The management passage 20 is used as an emergency evacuation passage in the event of a fire in the tunnel. A water supply main 24 is laid in the management passage 20.

Fire hydrant equipment 16 is installed every 50 meters in the longitudinal direction of the tunnel 10, and the fire hydrant equipment 16 is separately installed in the fire hydrant storage box 30 in which the hose is stored and the water discharge control mechanism storage unit 120.

The fire hydrant storage box 30 is arranged in a fire hydrant embedding portion that is hollowed out in a box shape over the road surface of the observer passage 14 and the wall surface on the road 15 side. The water discharge control mechanism storage unit 120 is arranged in the management passage 20 below the fire hydrant storage box 30, and the branch pipe 24a branched from the water supply main 24 is drawn in, and the fire hydrant storage box 30 is supplied with fire extinguishing water. The water supply pipe 25 is set up.

[Fire hydrant equipment]
FIG. 2 is an explanatory view showing the appearance of the fire hydrant storage box from the front and a flat surface, and FIG. It is an explanatory diagram.

(Exterior structure of fire hydrant storage box)
As shown in FIG. 2, the fire hydrant storage box 30 of the fire hydrant equipment 16 is embedded and installed in the internal space under the road surface of the observer passage 14. As shown in FIG. 2A, in the fire hydrant storage box 30, the front door 32 is slidably arranged in the vertical direction in the front door opening 31 formed on the upper side of the center of the front surface of the housing.

Further, as shown in FIG. 2B, an upper door 36 having the same width as the front door 32 is arranged in the upper door opening 33 formed on the upper surface of the fire hydrant storage box 30 on the road surface side of the observer passage 14. Has been done. The upper door 36 can be opened forward and backward.

Here, the front opening of the upper door 36 means that the upper door 36 is opened and closed upward with the trailing edge portion on the depth side of the upper door 36 as an axis, as shown in FIG. 3 (B). Further, the rear opening of the upper door 36 means that, as shown in FIG. 3C, the upper door 36 is opened and closed upward with the front edge portion in front of the upper door 36 as an axis.

As shown in FIGS. 2 and 3A, the front door 32 and the upper door 36 are locked in a closed state, and when the user operates from the road 15 side, the front opening handle 34 is opened. Then, the pair of rod rods 42a connected to both sides of the front opening handle 34 is pulled toward the handle side, and the hinge 50a pivotally supported on the housing 28 side is pulled in to release the lock of the upper door 36. As the rod rod 42a is pulled in, the front door 32 is released from the lock on the upper door 36, and the front door 32 falls to the back side of the fixed door 35 due to its own weight to open the front door opening 31 of the fire extinguisher storage box 30. Further, as shown in FIG. 3B, the upper door 36 is opened forward by pushing up the gas spring 40 that functions as a door opening urging mechanism, thereby opening the upper door opening 33 of the fire extinguisher storage box 30.

In this case, in the front opening of the upper door 36, as shown in FIG. 2B, the hinge 50b at the tip of the rod rod 42b connected to both sides of the rear opening handle 38 is pivotally supported on the housing 28 side. The door is opened forward about the hinge 50b as an axis.

Further, when the user operates from the observer passage 14 side, when the rear opening handle 38 is opened, as shown in FIG. 2 (B), a pair of rod rods connected to both sides of the rear opening handle 38. 42b is pulled into the handle side, the hinge 50b axially supported on the housing 28 side is pulled in, the lock on the trailing edge side of the upper door 36 is released, and the rod rods 42a connected to both sides of the front opening handle 34. As shown in FIG. 3C, the upper door 36 is opened rearward by pushing up the gas spring 40 with the hinge 50a at the tip of the fire extinguisher storage box 30 as an axis, thereby opening the upper door opening 33 of the fire extinguisher storage box 30.

Here, the gas spring 40 is provided with a piston slidably inside the cylinder, and a rod connected to the piston is taken out to the lower part, and an inert gas such as nitrogen gas is added to the cylinder chamber partitioned by the piston. It is pressure-filled, and the filled gas pressure applies a force to push it out to the rod via the piston.

[Opening and closing mechanism for front and upper doors]
FIG. 4 is an explanatory view showing a cross section and a plane of the first opening / closing mechanism and the second opening / closing mechanism when the front door and the upper door are closed, and FIG. Explanatory view showing the first opening / closing mechanism and the second opening / closing mechanism in a cross section seen from the side, FIG. 6 is a perspective view showing the first opening / closing mechanism in the closed state of the front door and the upper door as seen from the inside of the housing. 7 is a perspective view showing a lock piece formed in a U-shaped link by partially breaking the figure 6.

The opening / closing mechanism of the front door 32 and the upper door 36 according to the present embodiment includes a first opening / closing mechanism and a second opening / closing mechanism.

The first opening / closing mechanism is when the front door 32 is slid open, the upper door 36 is opened forward, and the upper door 36 is opened rearward by releasing the lock by operating the front opening handle 34 shown in FIG. It is a mechanism for pivotally supporting the front edge side of the upper door 36 so as to be openable and closable.

Further, the second opening / closing mechanism causes the upper door 36 to open backward by releasing the lock by operating the rear opening handle 38 shown in FIG. 2, and when the upper door 36 is opened forward, the rear edge side of the upper door 36 is opened. It is a mechanism that supports the shaft so that it can be opened and closed.

(1st opening / closing mechanism)
As shown in FIGS. 4, 5 and 6, the first opening / closing mechanism includes a rod rod 42a, a rod mounting shaft 46a, a U-shaped link 48a, a hinge 50a, a hinge guide member 52a, a coil spring 54a, a hinge receiving member 56a and a hook. It is composed of a front door hanger portion 60a provided with 62a.

As shown in FIG. 2, the rod rod 42a is connected to both sides of the front opening handle 34 and is pulled in by the operation of the front opening handle 34.

A rod mounting shaft 46a, a U-shaped link 48a, and a hinge 50a are sequentially connected and fixed to the tip of the rod rod 42a. The tip of the rod rod 42a is rotatably connected to one end of the rod mounting shaft 46a by a shaft pin, and the link piece at one end of the U-shaped link 48a is fixed to the other end.

As shown in the plane of FIG. 4B, the U-shaped link 48a is a plate member that opens rearward (depth direction) in a horizontal plane in a U-shape. Here, the rod mounting shaft 46a and the U-shaped link 48a form a rod connecting portion 44a that connects the rod rod 42a and the hinge 50a.

The hinge 50a has a spherical protrusion at the tip and is freely arranged in the shaft hole of the hinge receiving member 56a. It is fixed, and a coil spring 54a is fitted into the small diameter shaft portion, and the hinge 50a is urged toward the tip side with respect to the hinge guide member 52a.

On the other hand, a front door hanger portion 60a is provided on the back surface of the front door 32. As shown in FIGS. 4A, 5 and 6, the front door hanger portion 60a pivotally supports the hook 62a upward by a screw pin 66a on the mounting member 64a fixed to the back surface of the front door 32. , The winding spring 68a provided on the screw pin 66a urges the hook claw 65a at the tip of the hook 62a so as to be on the rod mounting shaft 46a. Note that FIG. 4B shows only the hook 62a of the front door hanger portion 60a, and the others are omitted.

As shown in FIG. 5, the link piece of the U-shaped link 48a connected and fixed to the rod mounting shaft 46a extends rearward beyond the outer diameter of the rod mounting shaft 46a, so that the lock piece 58a is provided therein. It is formed. The formation of the lock piece 58a is also clear from FIG. 7, which shows a part of the hook 62a broken.

Here, the rod rod 42a, the rod mounting shaft 46a, the U-shaped link 48a, the hinge 50a, the hinge guide member 52a, the coil spring 54a, the rod connecting portion 44a, the hook 62a, and the lock piece 58a constituting the first opening / closing mechanism are the first rods. It functions as a rod, a first rod mounting shaft, a first U-shaped link member, a first hinge member, a first hinge receiving member, a first rod connecting portion, a first hook member, and a first lock piece.

Further, the shaft member including the rod rod 42a, the rod mounting shaft 46a, the U-shaped link 48a, and the hinge 50a has a function of a fixed shaft for rotation for opening the upper door 36 rearward and for opening the upper door 36 forward. It also functions as a rod shaft that pulls off the fixed shaft for rotation.

(Second opening / closing mechanism)
As shown in FIGS. 4B and 5, the second opening / closing mechanism includes a rod rod 42b, a rod mounting shaft 46b, a U-shaped link 48b, a hinge 50b, a hinge guide member 52b, a coil spring 54b, a hinge receiving member 56b, and a hook. It is composed of an upper door hanger portion 60b provided with 62b. The difference from the first opening / closing mechanism is that it is operated by the rear opening handle 38 and that the upper door hanger portion 60b provided with the hook 62b is fixed to the back surface of the housing. , It is basically the same as the first opening / closing mechanism.

In the second opening / closing mechanism, the rod rod 42b is connected to both sides of the rear opening handle 38 as shown in FIG. 2B, and is pulled in by the operation of the rear opening handle 38.

A rod mounting shaft 46b, a U-shaped link 48b, and a hinge 50b are sequentially connected and fixed to the tip of the rod rod 42b. The tip of the rod rod 42b is rotatably connected to one end of the rod mounting shaft 46b by a shaft pin, and the link piece at one end of the U-shaped link 48b is fixed to the other end.

As shown in the plane of FIG. 4B, the U-shaped link 48b is a plate member that opens forward in a U-shape in a horizontal plane. Here, the rod mounting shaft 46b and the U-shaped link 48b form a rod connecting portion 44b that connects the rod rod 42b and the hinge 50b.

The hinge 50b has a spherical protrusion at the tip and is freely arranged in the shaft hole of the hinge receiving member 56b. It is fixed, and the coil spring 54b is fitted into the small diameter shaft portion, and the hinge 50b is urged toward the tip side with respect to the hinge guide member 52b.

On the other hand, as shown in FIG. 5, an upper door hanger portion 60b is provided on the back surface of the housing 28. The upper door hanger portion 60b pivotally supports the hook 62b upward by the screw pin 66b on the support metal fitting 64b fixed to the back surface of the housing 28, and the hook 62b is supported by the winding spring 68b provided on the screw pin 66b. The hook claw 65b at the tip is urged so as to be above the rod mounting shaft 46b. Note that FIG. 4B shows only the hook 62b of the upper door hanger portion 60b, and the others are omitted.

The link piece of the U-shaped link 48b connected and fixed to the rod mounting shaft 46b extends forward beyond the outer diameter of the rod mounting shaft 46b, so that the lock piece 58b is formed therein.

Here, the rod rod 42b, the rod mounting shaft 46b, the U-shaped link 48b, the hinge 50b, the hinge guide member 52b, the coil spring 54b, the rod connecting portion 44b, the hook 62b, and the lock piece 58b constituting the second opening / closing mechanism are the second rods. It functions as a rod, a second rod mounting shaft, a second U-shaped link member, a second hinge member, a second hinge receiving member, a second rod connecting portion, a second hook member, and a second lock piece.

Further, the shaft member including the rod rod 42b, the rod mounting shaft 46b, the U-shaped link 48b, and the hinge 50b has a function of a fixed shaft for rotation for opening the upper door 36 forward and for opening the upper door 36 rearward. It also functions as a rod shaft that pulls off the fixed shaft for rotation.

[Operation to open the upper door and front door from the road side]
FIG. 8 is an explanatory view showing a cross-sectional view and a plane of the unlocking operation of the front door and the upper door by the first opening / closing mechanism when the front opening handle is operated, and FIG. 9 is a case where the front opening handle is operated. An explanatory view showing the unlocking operation of the front door and the upper door by the first opening / closing mechanism in a cross section seen from the side, FIG. 10 shows a rod mounting shaft by a lock piece of the second opening / closing mechanism with the upper door opened forward. It is explanatory drawing which showed the locking operation of the door in the cross section seen from the side.

When the user operates the fire extinguisher storage box 30 from the road side, when the handle lever of the front opening handle 34 shown in FIG. 2 (A) is pulled up, the handle operation is performed, and as shown in FIG. 1 The rod rod 42a of the opening / closing mechanism is pulled toward the handle side, and the hinge 50a connected to the rod rod 42a via the rod mounting shaft 46a and the U-shaped link 48a is pulled out from the shaft hole of the hinge receiving member 56a to form a housing. The lock on the front edge side of the upper door 36 with respect to the body 28 is released, the front opening of the upper door 36 starts as shown by the upper door 36a shown by the imaginary line in FIG. 9, and the gas as shown in FIG. 3 (B). It is opened forward by the spring 40.

Further, due to the movement of the rod mounting shaft 46a and the U-shaped link 48a accompanying the pulling in of the rod rod 42a, the hook claw 65a was previously locked on the upper side of the rod mounting shaft 46a, but it is moved to the position of the hook claw 65a. The U-shaped open portion of the character link 48a moves, the hook claw 65a is released from the lock, and as shown in FIG. 9, the front door 32 slides down due to its own weight, as shown in FIG. 3 (B). At the same time, the front door 32 is opened.

Since the foam nozzle is locked to the nozzle holder on the back side of the upper door 36 opened by the front opening, as will be clarified later, the foam nozzle appears in front of the eyes and easily foams. The nozzle can be taken out and the hose can be pulled out.

Further, as shown in FIG. 10, when the upper door 36 is completely opened forward and stands upright, the rod is attached to the hook claw 65b at the tip of the hook 62b arranged on the back surface of the housing of the second opening / closing mechanism. The shaft 46b turns upward as the upper door 36 rotates, and the lock piece 58b formed on the U-shaped link 48b also rotates upward and moves to a position relative to the hook claw 65b.

Therefore, when the front opening of the upper door 36 is completed, even if the rear opening handle 38 provided on the rear edge side of the upper door 36 is operated to pull in the rod rod 42b, the lock formed on the U-shaped link 48a is formed. The piece 58b hits the hook claw 65b and cannot move, the operation of the rear opening handle 38 is locked, and the shaft support by the hinge 50b is surely prevented from being released in the rear opening state of the upper door 36. ..

[Operation to open the upper door from the guard passage side]
FIG. 11 is an explanatory view showing a plan view of the unlocking operation of the upper door by the second opening / closing mechanism when the rear opening handle is operated, and FIG. 12 is an explanatory view of the upper door by the second opening / closing mechanism when the rear opening handle is operated. Explanatory view showing the unlocking operation in a cross section seen from the side, FIG. 13 shows the locking operation of the rod mounting shaft by the lock piece of the first opening / closing mechanism in the state where the upper door is opened rearward in the cross section seen from the side. It is explanatory drawing.

When the user operates the fire extinguisher storage box 30 from the observer passage side, the user bends down from the observer passage and pulls up the handle lever of the rear opening handle 38 shown in FIG. As shown in FIG. 11, the rod rod 42b of the second opening / closing mechanism is pulled toward the handle side, and the hinge 50b connected to the rod rod 42b via the rod mounting shaft 46b and the U-shaped link 48b is hinged. It is pulled out from the shaft hole of the member 56b, and the lock on the front edge side of the upper door 36 with respect to the housing 28 is released.

Further, due to the movement of the rod mounting shaft 46b and the U-shaped link 48b accompanying the pulling in of the rod rod 42b, the hook claw 65b was previously locked on the upper side of the rod mounting shaft 46b, but it is moved to the position of the hook claw 65b. The U-shaped open portion of the character link 48b moves, the lock by the hook claw 65b is released, the rear opening of the upper door 36 starts as shown by the upper door 36a shown by the imaginary line in FIG. 12, and FIG. 3 (B) ), The gas spring 40 is urged and released.

Since the foam nozzle is locked to the nozzle holder on the back side of the upper door 36 opened by the rear opening, the foam nozzle appears in front of the eyes, and the foam nozzle can be easily taken out from the observer passage side. The hose can be pulled out.

Further, as shown in FIG. 13, when the upper door 36 is completely rear-opened and stands upright, the hook claw 65a at the tip of the hook 62a arranged on the back surface of the front door 32 of the first opening / closing mechanism is opposed to the hook claw 65a. The rod mounting shaft 46a rotates upward as the upper door 36 rotates, and the lock piece 58a formed on the U-shaped link 48a also rotates upward and moves to a position relative to the hook claw 65a.

Therefore, even if the front opening handle 34 provided on the front edge side of the upper door 36 is operated to pull in the rod rod 42a in the state where the rear opening of the upper door 36 is completed, the lock formed on the U-shaped link 48a. The piece 58a hits the hook claw 65a and cannot move, the operation of the front opening handle 34 is locked, the front door 32 is released by unlocking the front door 32 in the rear opening state of the upper door 36, and the shaft support is released by the hinge 50a. Is surely prevented.

[Handle link mechanism]
14A and 14B are explanatory views showing the configuration of a link mechanism for pulling in and driving a rod rod provided on the front opening handle. FIG. 14A shows a non-operating state, and FIG. 14B shows an operating state. ..

As shown in FIG. 14A, one end of a pair of bent links 88 is connected by a moving fulcrum 90 in the handle main body 34a, and the bent position of the link 88 is fixed to the handle main body 34a side as a rotating fulcrum 92. The other end of the link 88 is connected to the fulcrum 96 at the shaft end of the rod shaft 42a as a slide fulcrum 94, and the moving fulcrum 90 is urged upward in the drawing by a spring 98.

When the front opening handle 34 is not operated, the link 88 rotates outward by receiving the force of the spring 98, so that the rod rod 42a is in the non-operating position and the hinge on the tip side of the rod shaft 42a is hinged. It is fitted into the member and the upper door 36 and the front door 32 are locked in the closed position.

When the front opening handle 34 is lifted up, as shown in FIG. 14 (B), the moving fulcrum 90 moves downward against the spring 98 via a link mechanism (not shown), whereby the link 88 turns inward. By moving and pulling the rod rods 42a on both sides inward, the hinge on the tip side of the rod rod 42a is pulled out from the hinge receiving member, the front door 32 is unlocked, and the front door 32 slides by its own weight. It falls to open the upper part of the front surface, the upper door 36 is also unlocked, and the front door is opened by a spring.

The link mechanism of the rear opening handle 38 is also the same as that in FIG. Further, the link mechanism of the handle is not limited to the link mechanism of FIG. 14, and when the front opening handle 34 or the rear opening handle 38 is operated, the link rods 42a and 42b on both sides are pulled inward and the hinge is pulled from the hinge receiving member. An appropriate link mechanism to remove is included.

[Axial load reduction mechanism of the first opening / closing mechanism]
(Front door push-up mechanism)
FIG. 15 is an explanatory view showing an embodiment of a fire extinguishing plug storage box having a front door pushing-up mechanism on the front door from the front, and FIG. 16 is a front door closing and front of a fire extinguishing plug storage box having a front door pushing-up mechanism on the front door. It is explanatory drawing which showed the cross section seen from the side when the door was opened.

In the closed state of the upper door 36 and the front door 32 shown in FIGS. 4 to 6, the rod mounting shaft in which the hinge 50a fitted in the hinge receiving member 56a of the first opening / closing mechanism and the hook claw 65a of the hook 62a are locked. The weight W of the front door 32 is added to the 46a, and there is a possibility that the front opening handle 34 for pulling in the rod rod 42a requires a strong operating force and cannot be easily operated.

Therefore, in the present embodiment, as shown in FIG. 15, a front door pushing-up mechanism 100 that functions as an axial load reducing mechanism is provided on the inner lower side of the front door 32.

As shown in FIG. 16A, the front door push-up mechanism 100 includes a rotary shaft portion 102 provided with a winding spring, a push-up arm 104 connected to the rotary shaft portion 102, and a roller 106 provided at the tip of the push-up arm 104. The front door 32 is closed by the hinge 50a of the first opening / closing mechanism, and the roller 106 at the tip of the push-up arm 104 is brought into contact with the lower end of the front door 32 to be pushed up by the winding spring provided on the rotating shaft portion 102. The force F1 is applied upward.

Further, the load of the upper door 36 is applied to the hinge 50a of the first opening / closing mechanism, but the upper door 36 is pushed up by the gas spring 40. Therefore, the pushing force F2 by the gas spring 40 is also applied to the hinge 50a. There is.

Therefore, the operating force F0 of the front opening handle 34 is
F0 = W-F1-F2
Given in.

The handle operating force F0 of the tunnel fire hydrant equipment of the present embodiment is required to be 49 N (Newton) or less so that anyone can operate it, and the front door is pushed up so that the handle operating force F0 is 49 N or less. The pushing force F1 of the mechanism 100 is set.

FIG. 16B shows a case where the front opening handle 34 is operated. When the front door 32 and the upper door 36 are unlocked, the weight W of the front door 32 is increased by the pushing force F1 of the front door pushing mechanism 100. Since it is large, the push-up arm 104 rotates downward in response to the weight W of the front door 32, and the front door 32 slides down and is opened. At this time, since the front door 32 is in contact with the roller 106 of the push-up arm 104, the push-up arm 104 rotates smoothly with respect to the slide drop of the front door 32 to open the front door 32.

The front door push-up mechanism 100 is not limited to the above-mentioned arm rotation structure, and for example, a coil spring that applies a push-up force may be provided on the lower side of the front door 32.

(Magnetic adsorption mechanism)
FIG. 17 is an explanatory view showing an embodiment of a fire hydrant storage box provided with a magnetic attraction mechanism on the front door from the front.

As shown in FIG. 17, a magnetic attraction mechanism 108 that functions as an axial load reduction mechanism is provided on the upper left and right sides of the front door 32. The magnetic adsorption mechanism 108 is arranged on a magnet 110 using a magnetic material arranged on the inner side surface of the housing 28 side facing the side surface of the front door 32 and on the inner side surface of the front door 32 facing the magnet 110. It is composed of a magnet receiving member 112.

In the closed state in which the front door 32 is locked by the hinge 50a of the first opening / closing mechanism, the magnetic attraction force F3 that upwardly supports the front door 32 by the magnet 110 and the magnet receiving member 112 between the front door 32 and the housing 28. Occurs.

Further, although the weight of the upper door 36 is added to the hinge 50a of the first opening / closing mechanism, the upper door 36 is pushed up by the gas spring 40 as shown in FIG. 16, and therefore the hinge 50a has a gas spring. The push-up force F2 by 40 is also applied.

Therefore, the operating force F0 of the front opening handle 34 is
F0 = W-F3-F2
Given in.

The handle operating force F0 is required to be 49 N or less so that anyone can operate it, and the magnetic attraction force F3 of the magnetic attraction mechanism 108 is set so that the handle operating force F0 is 49 N or less.

Since such a magnetic attraction mechanism 108 is provided on the front door 32, the front opening handle 34 can be reduced to an operating force that can be operated by anyone by a simple structure in which the magnet 110 and the magnet receiving member 112 are provided.

[Internal structure of fire hydrant storage box]
FIG. 18 is an explanatory view showing the appearance of the fire hydrant storage box from the front, the plane, and the side surface. As shown in FIG. 18, the lower inside of the fire hydrant storage box 30 is a hose storage portion 150, and the hose 160 having a shape-retaining structure is wound horizontally inward. Here, since the width of the fire hydrant storage box 30 is about 1.4 meters and the depth is about 0.35 meters, the length of one turn of the hose 160 wound inward in the hose storage portion 150 is approximately 3. Since the hose length is about 5.5 meters and the hose length needs to be 30 meters or more, the hose 60 may be wound inward for 9 turns or more.

A hose guide 152 is arranged in the center of the fire hydrant storage box 30. The hose guide 152 uses a metal pipe, and two L-shaped bent guide pipes 156 from the upper surface to the front are arranged inside the openings of the front door 32 and the upper door 36 shown in FIG. The guide pipe 154 is arranged sideways at the center of the hose and both ends are fixed to the guide pipe 156. With the front door 32 and the upper door 36 open, the upper front surface and the upper opening following the guide pipe 154, 156 are opened. By partitioning with, a take-out space for the hose 160 is formed.

Further, the guide pipe 156 has an upper door support structure in which the upper part of the guide pipe 156 is located on the lower surface of the upper door 36 which is closed, and the upper door 36 is placed on the guide pipe 156 in a closed state to support the guide pipe 156. Here, the upper door 36 has a length exceeding, for example, 1 meter along the observer passage 14, but guide pipes 156 are located in the front-rear direction at two places of the door opening to support the upper door 36. Even if a person gets on the closed upper door 36, sufficient support strength is obtained by supporting it by the guide pipe 156.

Further, inside both ends of the upper door 36, a stepped receiving portion made of a plate member fixed to the housing 28 side is formed, and both ends of the upper door 36 ride on the stepped receiving portion to be supported by the guide pipe 156. In addition, sufficient support strength is obtained.

A nozzle holder 164 is arranged on the back surface of the upper door 36, and a bubble nozzle 162 provided at the tip of the hose 160 is detachably locked to the nozzle holder 164. Therefore, when the upper door 36 is opened forward or backward, the foam nozzle 162 held on the back surface of the door appears at the upper part of the fire hydrant storage box 30.

The position where the foam nozzle 162 held on the back surface of the door by opening the front of the upper door 36 appears is in the range of approximately 0.9 to 1.3 meters from the road 15, which is the position of the user standing on the road. Since the bubble nozzle 162 appears in front of the eyes, which corresponds to the range from the waist to the shoulder, the bubble nozzle 162 can be easily taken out.

Further, the position where the bubble nozzle 162 held on the back surface of the door when the upper door 36 is opened rearward appears is in any range of approximately 0.2 to 0.4 meters from the road surface of the observer passage 14. The foam nozzle 162 appears in front of the user who bends down to 14 and operates the rear opening handle 38, and the user can easily take out the foam nozzle 162 from the observer passage 14 side.

An operation box 166 is arranged on the upper side of the guide pipe 156 arranged on the right side in the fire hydrant storage box 30, and a fire hydrant valve opening / closing lever 168 is provided on the operation box 166 and is provided inside the operation box 166. The manual pilot valve is opened and closed. When the fire hydrant valve opening / closing lever 168 is opened, the manual pilot valve is opened, and the separately arranged fire hydrant valves can be opened remotely.

Pilot pipes 136a and 136b are connected from below to the manual pilot valve provided in the operation box 166. The pilot pipes 136a and 136b are connected to the manual pilot valve in the operation box 166 through the pipe duct 165 arranged on the right side of the guide pipe 156 from the lower side.

As shown in the plane of FIG. 18B, the hose 160 internally wound around the hose storage portion 150 is wound in a slightly curved state inward at the guide pipe 156 and the piping duct 165. For this reason, the parallel wire hose portion on the front side of the hose 160 is deformed inward to form a shape close to a gourd shape, and due to this deformation, the deformed parallel wire hose portion of the hose 160 has a repulsive force that tries to spread outward. It is possible to reliably prevent the parallel wire portions of the hose 160, which are repeatedly wound inward, from collapsing inward due to the generated force that presses against the inner wall side of the housing.

Further, when the door is opened and the hose 160 is pulled out to the outside, in addition to the force for pushing out the hose 160 due to the deformation of the radial portion of the hose 160, the parallel line portion of the hose 160 is also deformed by the hose guide structure. A force that tries to push out the hose 160 is generated by the force, and the hose pulling force can be reduced.

[Structure of water discharge control mechanism]
FIG. 19 is an explanatory view showing a water discharge control mechanism in a cross section viewed from the road side together with a fire hydrant storage box on the observer passage side.

(Structure of water discharge control mechanism)
As shown in FIG. 19, the water discharge control mechanism storage unit 120 is arranged in the management passage 20 below the internal space of the observer passage 14 in which the fire hydrant storage box 30 is arranged.

The water discharge control mechanism storage unit 120 is provided with a pressure-open type fire hydrant valve 122, an automatic pressure regulating valve 124, and a foam mixer 126 as valves constituting the water discharge control mechanism.

The branch pipe 24a branched from the water supply main 24 is connected to the primary side of the fire hydrant valve 122, and the automatic pressure regulating valve 124 and the foam mixer 126 are connected following the fire hydrant valve 122. A pipe from the foam stock solution tank 128 is connected to the foam mixer 126, and the foam fire extinguishing water obtained by mixing the foam stock solution at a predetermined ratio with the fire extinguishing water flowing through the foam mixer 126 is supplied to the fire hydrant storage box 30 via the water supply pipe 25. It is supplied to the hose 160.

The fire hydrant valve 122 is provided with a piston 132 slidably in the cylinder chamber 130 as a valve opening / closing mechanism for pressurizing and releasing, and the valve body 135 is connected to the piston 132 by a piston rod, which is opposite to the cylinder chamber 130. The spring 134 is incorporated in the.

The fire hydrant valve 122 is normally closed. The fire hydrant valve 122 is closed by discharging fire extinguishing water from the cylinder chamber 130 to reduce the pilot pressure to zero, pushing the piston 132 in the closing direction by the spring 134, and bringing the valve body 135 into contact with the valve seat. The flow paths on the secondary side and the secondary side are closed to be in a closed state.

To open the fire hydrant valve 122, supply fire extinguishing water to the cylinder chamber 130 to pressurize the pilot pressure, thereby stroking the piston 132 outward against the spring 134 and separating the valve body 135 from the valve seat. The primary side and the secondary side are communicated with each other to open the open state.

In order to open the fire hydrant valve 122 by remote control, the operation box 166 of the fire hydrant storage box 30 is provided with a manual pilot valve 140 that is opened and closed by the fire hydrant valve opening / closing lever 168.

The pilot pipe 136a drawn from the branch pipe 24a is connected to the primary side of the manual pilot valve 140, and the secondary side of the manual pilot valve 140 is connected to the cylinder chamber 130 of the fire hydrant valve 122 by the pilot pipe 136b. ..

In the present embodiment, the manual pilot valve 140 is directly opened and closed by the fire hydrant valve opening / closing lever 168. However, the manual pilot valve 140 is arranged in another place in the fire hydrant storage box 30 and is wire-linked. It may be opened and closed remotely by such means.

Further, a notification device panel 170 is provided at the upper left portion of the front surface of the fire hydrant storage box 30. The reporting device panel 170 is provided with a red indicator lamp 172, a transmitter 174, a response lamp 176, and a telephone jack 178. The red indicator light 172 is always on so that the location of the fire hydrant equipment can be seen from a distance. In the event of a fire, when the transmitter 174 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, and the response lamp 176 is turned on, and the red indicator lamp 172 is blinked.

(Operation of fire hydrant equipment)
In the event of a vehicle accident involving a fire in the tunnel 10, the user goes to the fire hydrant facility 16 near the place where the fire broke out, presses the transmitter 174 of the notification device panel 170, and sends a fire notification signal to the disaster prevention receiver of the monitoring center. Is transmitted, a confirmation response signal is received from the disaster prevention receiving panel, the response lamp 176 is turned on, and the red indicator lamp 172 blinks to confirm the completion of the notification to the monitoring center side.

Subsequently, in order to extinguish the fire from the road 15 side, when the front opening handle 34 of the fire hydrant storage box 30 is operated to release the lock, the front door 32 slides down and is released, and the upper door 36 is opened in front. When opened, the bubble nozzle 162 locked to the back surface of the front-opened upper door 36 is exposed at the upper part.

The user removes the foam nozzle 162 from the nozzle holder 164 and pulls out the hose 160, and the hose 160 pulled out at this time is smoothly pulled out while sliding in contact with the guide pipes 154 and 156.

If the vehicle is stopped in front of the fire hydrant storage box 30 and cannot be operated from the front side, the user will operate from the observer passage 14.

Subsequently, when the fire hydrant valve opening / closing lever 168 provided in the operation box 166 arranged on the right side of the opening space of the fire hydrant storage box 30 is operated in the opening direction, the manual pilot valve 140 is opened and the fire is extinguished from the branch pipe 24a. Water is supplied to the cylinder chamber 130 of the fire hydrant valve 122 via the pilot pipe 136a, the manual pilot valve 140, and the pilot pipe 136b to pressurize the pilot pressure, and the piston 132 is stroked outward against the spring 134 to make the valve. The fire hydrant valve 122 is opened by separating the body 135 from the valve seat.

When the fire hydrant valve 122 is opened, fire extinguishing water from the water supply main 24 flows from the water supply pipe 25 toward the hose 160 of the fire hydrant storage box 30 via the fire hydrant valve 122, the automatic pressure regulating valve 124, and the foam mixer 126, and bubbles are generated. When the foam stock solution is mixed at a predetermined ratio in the mixer 126 and the foam fire extinguishing water is discharged from the foam nozzle 162 of the hose 160 drawn from the fire hydrant storage box 30, the fire extinguishing foam formed by entraining air is released. Will be done.

Further, since it is necessary to send a pump start signal to the fire extinguishing pump equipment to start the fire hydrant valve 122 when the fire hydrant valve 122 is opened, a pressure switch 145 that detects and turns on the water pressure is set on the secondary side of the fire hydrant valve 122. It is provided. Instead of the pressure switch 145, the operation box 166 may be provided with a fire hydrant valve open detection switch that is turned on by opening the fire hydrant valve opening / closing lever 168 and transmits a pump start signal.

When the fire is extinguished and the fire extinguishing work is completed, the fire hydrant valve opening / closing lever 168 is returned to the closed position and the manual pilot valve 140 is closed. Subsequently, the water in the cylinder chamber 130 is slowly drained through the orifice 146, the pilot pressure is reduced to zero, the piston 132 is pushed back by the spring 134 and brought into contact with the valve seat, whereby the fire hydrant valve 122 is closed. Then, the emission of fire extinguishing bubbles is stopped.

When inspecting the water discharge control mechanism, the person in charge goes to the water discharge control mechanism storage unit 120 arranged in the management passage 20 and opens the manual release valve 142 to supply fire extinguishing water to the cylinder chamber 130. The pilot pressure is pressurized, and the fire hydrant valve 122 can be opened to perform a predetermined water discharge test. In this case, the manual drain valve 144 may be opened in order to close the fire hydrant valve 122.

[Modification of the present invention]
(1st and 2nd opening / closing mechanism)
The first and second opening / closing mechanisms shown in the above embodiment are an example, in which the front door is unlocked and slid open as the upper door opens forward, and the front door is held in the closed position. If it is a function to open the upper door backward, an appropriate mechanism is included.

(Foam fire hydrant equipment)
The above embodiment takes as an example a foam fire hydrant facility that discharges fire extinguishing foam, but the present invention is not limited to this, and a fire hydrant facility that discharges fire extinguishing water may be used.

(others)
Further, 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 surface 14: Observer passage 15: Road 16: Fire extinguisher equipment 18: Floor slab 20: Management passage 22: Duct 24: Water supply main 24a: Branch pipe 25: Water supply pipe 28: Housing 30: Fire extinguisher storage box 28: Housing 31: Front door opening 32: Front door 33: Top door opening 34: Front opening handle 34a: Handle body 35: Fixed door 36: Upper door 38: Rear opening handle 40: Gas springs 42a, 42b : Rod rods 44a, 44b: Rod connecting portions 46a, 46b: Rod mounting shafts 48a, 48b: U-shaped links 50a, 50b: Hinge 52a, 52b: Hinge guide members 54a, 54b: Coil springs 56a, 56b: Hinge receiving members 58a, 58b: Lock piece 60a: Front door hanger part 60b: Upper door hanger part 62a, 62b: Hook 64a, 64b: Support bracket 65a, 65b: Hook claw 66a, 66b: Screw pin 68a, 68b: Winding spring 100: Front door push-up Mechanism 108: Magnetic attraction mechanism 120: Water discharge control mechanism storage unit 122: Fire extinguishing valve valve 124: Automatic pressure regulating valve 126: Foam mixer 128: Foam stock solution tank 130: Cylinder chamber 132: Piston 134: Spring 135: Valve body 136a, 136b: Pilot piping 140: Manual pilot valve 142: Manual release valve 144: Manual drain valve 145: Pressure switch 146: Hinge

Claims (1)

A fire hydrant storage box placed in the guard passage along the wall of the tunnel and one step higher than the road surface.
A housing buried under the guard passage and containing a hose,
In the front door opening formed on the road side surface of the housing, a front door arranged so as to be openable and closable in the vertical direction, and
The upper door opening formed on the surface of the housing on the side of the observer passage surface is pivotally supported so that the door can be opened forward with the rear edge side of the door as an axis, and can be opened rearward with the front edge side of the door as an axis. An upper door with the same width as the front door, which is pivotally supported so as to be
By the front opening operation, the front door is unlocked and dropped to be released, and the upper door is unlocked to be opened forward, and when the upper door is opened rearward, the front edge side of the upper door is opened. The first opening and closing mechanism that supports the shaft so that it can be opened and closed freely,
It has the same configuration as the first opening / closing mechanism and has a mirror image relationship. When the upper door is unlocked and opened rearward by a rear opening operation, the rear edge side of the upper door is opened / closed when the upper door is opened forward. A second opening / closing mechanism that supports the shaft so that it can be freely operated,
With
The fire hydrant storage box, wherein the first opening / closing mechanism and the second opening / closing mechanism are symmetrically arranged on the front edge side of the upper door and the rear edge side of the upper door.

Images