JP2024061229A - Fire hydrant device and its installation method - Google Patents

Abstract

[Problem] To make it possible to simply and easily perform wiring work for drawing in and connecting an external electric circuit to a fire hydrant device. [Solution] The housing of the fire hydrant device is divided into a fire extinguisher/electrical equipment storage housing 10b, which is a first housing in which a terminal box is arranged as an electric circuit connection part for connecting electric circuits including an external electric circuit drawn in from the outside, and a fire hydrant equipment storage housing, which is a second housing connected to the fire extinguisher/electrical equipment storage housing 10b in the installed state and has a fire hydrant equipment arranged therein, and the fire extinguisher/electrical equipment storage housing 10b has, on the housing side to which the fire hydrant equipment storage housing is connected in the installed state, a side work opening 40 that can be used for wiring work for connecting the external electric circuit to the terminal box, and a connection surface 42 in which a through hole 44 is formed as a connection structure for connecting and fixing the fire hydrant equipment storage housing at a position that closes the side work opening 40 when the fire hydrant equipment storage housing is installed. [Selected Figure] Figure 7

Description

The present invention relates to a fire hydrant device in which electrical wiring is installed and a fire hydrant device is arranged, and a method for installing the same.

Conventionally, fire hydrant devices are installed as emergency tunnel equipment in tunnels on expressways, motorways, and other areas subject to firefighting. In a fire hydrant device, a fire hose with a nozzle attached to the end, valves including a fire hydrant valve, a fire hydrant valve opening/closing lever for operating the fire hydrant valve, and other fire hydrant equipment are stored and installed (disposed) in a fire hydrant storage section in a housing equipped with a fire hydrant door, and two fire extinguishers, for example, are stored (disposed) in a fire extinguisher storage section in a housing equipped with a fire extinguisher door. Moreover, fire hydrant devices are generally installed by embedding them in box-cut sections in the tunnel wall at intervals of, for example, 50 meters along the longitudinal direction of the tunnel.

The fire hydrant device also has an electrical door adjacent to the fire extinguisher door in the fire extinguisher storage area, and electrical equipment such as a red indicator light, a transmitter, and a response lamp is placed on the electrical door. A terminal box is provided in the fire extinguisher storage area inside the housing, and the electrical equipment is connected to the terminal box by a wiring cable (internal electrical circuit), and a wiring cable (external electrical circuit) pulled in from the outside is connected to the terminal box.

JP 2010-029585 A JP 2010-063658 A

In the construction work to install a fire hydrant in the cut-out section of the tunnel wall along which the guard passage is installed, a stand is first installed and fixed to the bottom of the cut-out section, and then a crane or the like is used to place the fire hydrant manufactured in a factory or the like on the installed and fixed stand in the cut-out section and attach it, and then wiring work (wiring work) is carried out to pull in and connect a wiring cable from the outside to the fire hydrant. In addition, piping work (piping work) for the valves and other parts of the fire hydrant is carried out at a time separate from these construction works.

However, wiring work for fire hydrant devices involves connecting a wiring cable pulled in from outside to a terminal block in a terminal box installed on the back of the fire extinguisher storage section inside the housing. This work must be done in a small space by opening the fire extinguisher door and reaching inside the housing with one's hands and body, making the wiring work time-consuming and labor-intensive. In addition, wiring work must be done individually for each of the many fire hydrant devices installed at 50-meter intervals, which is a major factor in lengthening the construction period overall.

The present invention focuses on the fact that wiring work and piping work for a fire hydrant device are carried out at different times, and aims to provide a fire hydrant device and its construction method that allows for simple and easy wiring work to draw in and connect an external electrical circuit from the outside to the fire hydrant device.

(Fire hydrant equipment)
The present invention is a fire hydrant device in which an electric circuit is laid inside and a fire hydrant device is arranged,
The housing of the fire hydrant device is
a first housing in which an electric circuit connection portion for connecting electric circuits including an external electric circuit drawn in from the outside is disposed;
A second housing connected to the first housing in an installed state and having a fire hydrant device disposed therein;
It is divided into
The first housing is
a side work opening that can be used for wiring work for connecting an external electric circuit to the electric circuit connection portion, on a side surface of the housing to which the second housing is connected in an installed state;
a connecting structure for connecting and fixing the second housing at a position where the side work opening is closed when the second housing is installed;
The present invention is characterized by comprising:

(Devices placed in the first and second housings)
The first housing has a predetermined electrical device disposed therein and connected to the electrical path connection portion by an internal electrical path,
The second housing serves as a fire hydrant device, is connected to the electrical circuit connection portion by an internal electrical circuit, and has an operation portion disposed therein for starting up the external pump equipment.

(External circuit)
The external electrical circuit is led into the first housing from a predetermined position.

(Fire hydrant installation method)
The present invention relates to a method for constructing a fire hydrant device in which an electric circuit is installed and a fire hydrant device is housed,
The housing of the fire hydrant device is
a first housing in which an electric circuit connection portion for connecting electric circuits including an external electric circuit drawn in from the outside is disposed;
A second housing connected to the first housing in an installed state and having a fire hydrant device disposed therein;
It is divided into
The installation of fire hydrant equipment is
The first housing is placed in a predetermined location;
With the first housing installed at the installation location, a wiring operation is performed to connect an external electric circuit to the electric circuit connection portion by utilizing a side work opening formed in a side surface of the housing to which the second housing will be connected in a later process and an empty space in which the second housing will be disposed;
After the wiring work, the second housing is connected and fixed to a position where it closes the side work opening of the first housing, and the second housing is installed.

(Devices to be placed in the first and second housings and their wiring work)
Before installing the fire hydrant system,
A predetermined electrical device is disposed in the first housing, and a fire hydrant device including an operation unit for starting an external pump facility is disposed in the second housing;
an electric circuit connecting portion and an electric device disposed in the first housing are connected by an internal electric circuit, and an internal electric circuit is drawn out from the electric circuit connecting portion to a control portion disposed in the second housing;
When wiring for fire hydrant installation,
An internal electrical path for connecting to an operating unit disposed in the second housing is pulled out into an open area through a side work opening.

(Effects of fire hydrant devices)
The present invention is a fire hydrant device in which an electric circuit is laid inside and a fire hydrant device is arranged, the housing of the fire hydrant device being divided into a first housing in which an electric circuit connection part for connecting electric circuits including an external electric circuit drawn in from the outside is arranged, and a second housing which is connected to the first housing in an installed state and in which the fire hydrant device is arranged inside, and the first housing is provided with a side work opening on the housing side to which the second housing is connected in an installed state, which can be used for wiring work to connect the external electric circuit to the electric circuit connection part, and a connection structure for connecting and fixing the second housing in a position that closes the side work opening when the second housing is installed. Therefore, by first installing the first housing that is the subject of wiring work and performing the wiring work before installing the second housing, the side work opening and the empty space before the second housing is installed can be used to perform the wiring work, and a sufficiently large work space is secured compared to the work through a door opening as in the conventional wiring work, making it possible to simply and easily perform wiring work inside the first housing and shortening the construction period required for the wiring work.

(Effects of the devices placed in the first and second housings and their wiring work)
In addition, the first housing has a specified electrical device connected to the electrical circuit connection section by an internal electrical circuit, and the second housing, as a fire hydrant device, has an operating section connected to the electrical circuit connection section by an internal electrical circuit and for starting external pump equipment, and during wiring work in the construction of the fire hydrant device, the internal electrical circuit for connecting to the operating section arranged in the second housing is pulled out from the side work opening into the open space, so that even when it is necessary to lay an electrical circuit all the way to the second housing, the wiring work can be performed simply and easily by utilizing the side work opening.

In addition, the invention of the installation method for a fire hydrant device also provides the same effects as the fire hydrant device described above, so a detailed explanation of this will be omitted.

This is an explanatory diagram showing a fire hydrant device installed in a box cutout portion of a tunnel wall. FIG. 2 is an explanatory diagram showing a side cross section of FIG. 1 . 1 is an explanatory diagram showing the internal structure of a fire hydrant device from the front with the maintenance door and the fire extinguisher door in an open state. FIG. FIG. 2 is an explanatory diagram showing the fire extinguisher and electrical equipment storage housing taken out. FIG. 2 is an explanatory diagram showing the fire hydrant device storage housing taken out. FIG. 13 is an explanatory diagram showing a connection structure of divided housings. 13 is an explanatory diagram showing the state in which a fire extinguisher/electrical device storage housing is installed in the box removal section. FIG. FIG. 11 is an explanatory diagram showing the state of the fire extinguisher/electrical device housing housing before wiring work is performed. FIG. 11 is an explanatory diagram showing the state after wiring work for the fire extinguisher/electrical device storage housing is completed. FIG. 4 is an explanatory diagram showing the terminal box taken out. FIG. 2 is an explanatory diagram showing a cable wiring system of a fire hydrant device. 4 is an explanatory diagram showing details of wiring for a terminal box to which a low-voltage cable is connected. FIG.

Below, an embodiment of a fire hydrant device and its installation method according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the following embodiment.

[Basic Concept of the Embodiment]
First, the basic concept of the embodiment will be described. The embodiment generally relates to a fire hydrant device in which an electric circuit is laid inside and a fire hydrant device is arranged, and the installation location of the fire hydrant device is arbitrary, but includes, for example, a device installed in a box-cut portion of a tunnel wall along which a guard passage of a tunnel having a road is provided.

Here, a "fire hydrant device" is a type of emergency equipment that is installed in areas to be extinguished, such as tunnels on expressways and motorways, and the fire hydrant equipment installed inside includes fire hoses, valves, and operating units for starting pump equipment, which is a type of emergency equipment, such as a pump start switch and a pump start linkage switch, and "location" is a concept that includes storage, installation, attachment, mounting, etc. Furthermore, a fire hydrant device may also include electrical equipment such as red indicator lights and transmitters and fire extinguishers in addition to fire hydrant equipment. Note that the concept of "location" in the embodiments includes storage, installation, attachment, mounting, etc., even when used for other things other than fire hydrant equipment.

The "electrical circuit" laid in the fire hydrant device refers to an electrical path for supplying power to the operating unit and electrical equipment for starting the pump equipment that is placed in the fire hydrant device and requires a power source, and includes, for example, wiring cables, wiring, and lines. In the "electrical circuit" of the embodiment, the one drawn in from outside the fire hydrant device is referred to as an "external electrical circuit," and the one connected to the equipment placed in the fire hydrant device, such as the operating unit and electrical equipment, is referred to as an "internal electrical circuit."

The fire hydrant device of the embodiment has a housing divided into a first housing and a second housing. Here, the "first housing" is the housing in which an electrical circuit connection part that connects electrical circuits including an external electrical circuit drawn in from the outside is disposed, and the "second housing" is connected to the first housing in the installed state and has the fire hydrant device disposed therein. The "electrical circuit connection part" is the part where the electrical circuit is connected, and the configuration and type for connecting the electrical circuits are arbitrary, but it may include, for example, a terminal box equipped with a terminal block.

In addition, the "first housing" of the embodiment is provided with a side opening on the side of the housing to which the second housing is connected in the installed state, which allows the opening to be used during wiring work to connect an external circuit to the circuit connection part, and a connection structure that connects and fixes the second housing in a position that closes the side opening when the second housing is installed. Here, "allowing the opening to be used during wiring work to connect an external circuit to the circuit connection part" means that the opening can be used during the wiring work, and does not mean that it is required or compelled to be used during the wiring work, or that the wiring work cannot be performed unless it is used.

The first housing has a specific electrical device connected to the electrical circuit connection section by an internal electrical circuit arranged therein, and the second housing, as a fire hydrant device, has an operating section connected to the electrical circuit connection section by an internal electrical circuit arranged therein for starting up the external pump equipment.

The external electrical wiring is drawn into the interior from a predetermined position in the first housing. Here, "a predetermined position in the first housing" refers to a suitable position for laying the electrical wiring, taking into consideration the installation location of the fire hydrant device and its surrounding environment, etc. For example, in the case of a fire hydrant device installed in a box-out section of a tunnel wall along which a guard's passage in a tunnel with a road is provided, this includes drawing in the external electrical wiring from the bottom of the first housing.

In the construction of the fire hydrant device of the embodiment, the first housing is installed at a predetermined installation location, and while the first housing is installed at the installation location, wiring work is performed to connect the external electrical circuit to the electrical circuit connection part using the side work opening formed in the side of the housing to which the second housing will be attached in a later process and the free space in which the second housing will be placed, and after the wiring work, the second housing is installed by connecting and fixing it to a position that closes the side work opening of the first housing, and the wiring work of the first housing is performed before the second housing is installed.

In addition, in the case where the first housing has a specific electrical device connected to the electrical circuit connection part by an internal electrical circuit, and the second housing is a fire hydrant device connected to the electrical circuit connection part by an internal electrical circuit and having an operation part for starting the external pump equipment, the specific electrical device is placed in the first housing and the fire hydrant device including an operation part for starting the external pump equipment is placed in the second housing before construction of the fire hydrant device, the electrical circuit connection part and the electrical device placed in the first housing are connected by an internal electrical circuit, and the internal electrical circuit for connecting to the operation part placed in the second housing is drawn from the electrical circuit connection part, and during wiring work in the construction of the fire hydrant device, the internal electrical circuit for connecting to the operation part placed in the second housing is drawn from the side work opening into an open area.

The arrangement of the electrical equipment and fire hydrant equipment and the installation of the internal electrical circuits may be done at any time before the construction of the fire hydrant device. For example, the manufacturing process of the fire hydrant device at a factory or the like may include the arrangement of the electrical equipment and fire hydrant equipment and the installation of the internal electrical circuits, and the arrangement of the electrical equipment and fire hydrant equipment and the installation of the internal electrical circuits may already be completed at the stage of the finished product in manufacturing. In addition, during the wiring work, the internal electrical circuits for connecting to the operating unit arranged in the first housing will be pulled out from the side work opening into the open area, but the order of the work with respect to the wiring work for the external electrical circuits does not matter.

Specific embodiments are described below. In the embodiment, the fire hydrant device is installed in a box-out section of a tunnel wall along which a guard's passage of a tunnel having a road is provided, the "first housing" is a "fire extinguisher and electrical equipment storage housing", the "second housing" is a "fire hydrant device storage housing", the "electrical circuit connection section" is a "terminal box with a terminal block", the "electrical circuit" is a "wiring cable", the "electrical equipment" is a "red indicator light, transmitter, response lamp and telephone jack", and the "operation section for starting external pump equipment", which is a type of fire hydrant device, is a "pump start switch and pump start interlock switch".

[Specific Contents of the Embodiment]
The fire hydrant device of the embodiment will be described in detail as follows.
a. Fire hydrant device a1. Structure of the fire hydrant device a2. Internal structure of the fire hydrant device a3. Operation structure of the fire hydrant valve b. Division structure of the fire hydrant device b1. Housing for storing fire extinguisher and electrical equipment b2. Housing for storing fire hydrant device c. Construction of the housing for storing fire extinguisher and electrical equipment d. Terminal box e. Cable wiring system of the fire hydrant device f. Modification of the present invention

[a. Fire hydrant equipment]
First, the fire hydrant device will be described. In this description, Fig. 1 shows a fire hydrant device installed in a box-cut portion of a tunnel wall, Fig. 2 shows a cross-section of the side of Fig. 1, and Fig. 3 shows a fire hydrant door and a maintenance door. Also refer to FIG. 3, which shows the internal structure of the fire hydrant device from the front (front side) with the fire extinguisher door in an open state.

Here, in the explanation of Figures 1 to 3, the X-Y-Z directions are mutually orthogonal directions, and specifically, when looking at the front face of the fire hydrant device equipped with various doors, the X direction is the left-right direction, the Y direction is the up-down direction, and the Z direction is the front-to-back direction. Also, the +X side in the X direction is the right side, the -X side is the left side, the +Y side in the Y direction is the top side, the -Y side is the bottom side, and the +Z side in the Z direction is the front side, and the -Z side is the rear side. This also applies to the X-Y-Z directions shown in Figures 4 to 9, which are embodiments of the present invention.

(a1. Configuration of the fire hydrant device)
The configuration of the fire hydrant device will be described below. As shown in Figures 1 and 2, the fire hydrant device 10 is installed by being attached and fixed on a stand 28 installed at the bottom of a box-out section 36 formed in a tunnel wall 35 along which a guard passage 38 of a tunnel having a road is provided.

As shown in FIG. 1, the fire hydrant device 10 is divided into a fire hydrant device storage housing 10a and a fire extinguisher/electrical device storage housing 10b, with decorative frames 11a and 11b arranged on the front of each housing.

The door opening of the decorative frame 11a of the fire hydrant equipment storage housing 10a is divided into upper and lower parts, with a forward-tilting fire hydrant door 12 that opens downwards on a hinge provided at the lower part of the door opening, and a maintenance door 14 that opens upwards on a hinge provided at the upper part of the door opening, and inside the fire hydrant storage section, a fire hose with a nozzle attached and valves including a fire hydrant valve are arranged (stored) as fire hydrant equipment. A door handle 1210 is provided on the fire hydrant door 12, and when a road user puts their hand into the door handle 1210 and pulls it towards themselves, the lock is released and the fire hydrant door 12 can be opened.

A fire extinguisher door 18 that opens sideways to the left on a hinge is provided on the left side of the door opening of the decorative frame 11b of the fire extinguisher/electrical equipment storage housing 10b, making it possible to place (store), for example, two fire extinguishers in the fire extinguisher storage section inside. A door handle 1810 is provided on the fire extinguisher door 18, and when a road user puts their hand into the door handle 1810 and pulls it towards themselves, the lock is released and the fire extinguisher door 18 can be opened. In addition, a viewing window 1820 is provided on the underside of the fire extinguisher door 18, making it possible to check whether a fire extinguisher is present from outside.

On the right side of the door opening of the decorative frame 11b, an electrical door 20 is provided that opens sideways to the right on a hinge. The electrical door 20 is provided with electrical equipment such as a red indicator light 22, a transmitter 24, and a response lamp 26, and a telephone jack (not shown) is provided inside the electrical door 20. In this way, the red indicator light 22, transmitter 24, response lamp 26, and telephone jack provided on the electrical door 20 constitute an emergency notification device.

The red indicator light 22 is always on, allowing the location of the fire hydrant device 10 to be known from a distance. In the event of a fire, a road user confirms the fire and presses the push button on the transmitter 24, which turns on the push button switch and sends a fire notification signal (transmission signal) to a disaster prevention receiving panel installed in an electrical room or the like, which then outputs a fire alarm. In response, a response signal is sent from the disaster prevention receiving panel 10 to the fire hydrant device 10, causing the red indicator light 22 to flash and the response lamp 26 to light up.

(a2. Internal structure of fire hydrant device)
Next, a description will be given of the internal structure of the fire hydrant device 10. As shown in Fig. 3, the fire hydrant storage section 16 inside the fire hydrant device storage housing 10a is divided into a valve storage section 1610 and a hose storage section 1620.

In the valve storage section 1610, a water supply pipe 55 drawn in from the outside is connected to a water supply hydrant 56, and the water supply pipe 55 branches downward and is connected to a fire hose 62 via a fire hydrant valve 57 and an automatic pressure adjustment valve 58.

The hose storage section 1620 is provided with a hose storage frame 66, in which the fire hose 62 pulled in from below is arranged (stored) by winding it inward clockwise or counterclockwise, and a nozzle 64 is attached to the tip of the fire hose 62 pulled out through a hose guide 118 installed on the back side of the fire hydrant door 12, and the nozzle 64 is held removably in a nozzle holder 65.

The fire hydrant valve 57 is opened and closed by operating a fire hydrant valve opening/closing lever 60 provided on an operation box 61 located on the back side of the fire hydrant door 70, and the fire hydrant valve 57 is opened and closed in conjunction with the opening and closing operation of the fire hydrant valve opening/closing lever 60 by a known wire link mechanism provided between the operation box 61 and a linkage box 67 provided on the fire hydrant valve 57 corresponding to the operation box 61.

In addition, a pump start interlocking switch 74 is provided in the interlocking box 67, which is turned on and off in response to the opening and closing of the fire hydrant valve 57 and transmits a pump start signal when turned on, and a pump start switch 76 is provided at the upper right of the water supply hydrant 56, which is used by the fire brigade and transmits a pump start signal when turned on.

The left side of the interior of the fire extinguisher/electrical equipment storage housing 10b (inside the fire extinguisher door 18) is the fire extinguisher storage section 19, in which two fire extinguishers 34 are placed (stored).

Terminal boxes 30 and 32 are arranged on the rear surface of the fire extinguisher storage section 19. The red indicator light 22 is connected to the terminal box 30 via a wiring cable (internal electrical circuit), and the transmitter 24, response lamp 26, and telephone jack 25 are connected to the terminal box 32 via wiring cables (internal electrical circuit). Furthermore, the pump start switch 76 and pump start interlocking switch 74 provided in the valve storage section 1610 are connected via wiring cables (internal electrical circuit), and the terminal boxes 30 and 32 are connected to a wiring cable (external electrical circuit) pulled in from the outside.

In addition, a cable rack 70 is arranged at the top from near the center of the valve storage section 1610 to the hose storage section 1620 inside the fire hydrant device storage housing 10a, and wiring cables for the pump start switch 76 and the pump start interlocking switch 74 are inserted through it.

[b. Separate structure of fire hydrant device]
Next, the divided structure of the fire hydrant device will be explained. In this explanation, reference will be made to Fig. 4 showing the fire extinguisher/electrical equipment storage housing removed, Fig. 5 showing the fire hydrant equipment storage housing removed, and Fig. 6 showing the connection structure of the divided housings. Fig. 4(A) shows the front (front), Fig. 4(B) shows the right side, and Fig. 4(C) shows the front (front) with the fire extinguisher door removed. Fig. 5(A) shows the front (front), and Fig. 5(B) shows the left side.

As shown in FIG. 1, the fire hydrant device 10 of this embodiment is divided into a fire hydrant device storage housing 10a and a fire extinguisher and electrical device storage housing 10b when it is installed in the box-out section 36 of the tunnel wall surface 35.

(b1. Fire extinguisher/electrical equipment storage housing)
As shown in Fig. 4, the fire extinguisher/electrical equipment storage housing 10b is assembled and manufactured as a single independent housing in a factory or the like, and has a side work opening 40 formed on the side surface that is the right side of the housing. A frame member is arranged around the side work opening 40 to form a connecting surface 42, and a plurality of through holes 44 are formed in the connecting surface 42, which enables the fire hydrant equipment storage housing 10a and the fire extinguisher/electrical equipment storage housing 10b to be connected and fixed with bolts and nuts.

In addition, during the assembly and manufacturing stage, the terminal box 30 and the red indicator light 22, and the terminal box 32 and the transmitter 24, the response lamp 26, and the telephone jack 25 are connected by wiring cables. Also, a wiring cable is wired from the terminal box 32 to a pulled-out state for connecting the pump start switch 76 and the pump start interlocking switch 74 provided in the fire hydrant equipment storage housing 10a, and a fire extinguisher tray 3410 for placing (storing) a fire extinguisher is provided on the inner bottom surface of the fire extinguisher/electrical equipment storage housing 10b.

The fire extinguisher/electrical equipment storage housing 10b that has been manufactured is transported as a finished product to the installation site inside the tunnel, and is installed by attaching and fixing it to the left side of the stand 28 installed in the box-out section 36 of the tunnel wall 35.

(b2. Fire hydrant device storage housing)
As shown in Fig. 5, the fire hydrant device storage housing 10a is assembled and manufactured as one independent housing in a factory, etc., and a connecting surface 48 is formed by arranging a partition plate on the left side of the housing, and a plurality of through holes 50 are formed around the connecting surface 48 corresponding to the plurality of through holes 44 formed in the connecting surface 42 of the fire extinguisher/electrical device storage housing 10b shown in Fig. 4, making it possible to connect and fix the fire hydrant device storage housing 10a and the fire extinguisher/electrical device storage housing 10b with bolts and nuts. In addition, a wire passage opening 72 is formed in the upper part of the connecting surface 48 at a position corresponding to the cable rack 70 shown in Fig. 3, and the wire passage opening 72 serves as a wiring opening for the cable rack 70.

The fire hydrant device storage housing 10a, which has been manufactured and assembled, is transported to the installation site in the tunnel as a finished product, just like the fire extinguisher/electrical device storage housing 10b. After the installation work (installation work) and wiring work (wiring work) of the fire extinguisher/electrical device storage housing 10b are completed, the fire extinguisher/electrical device storage housing 10b is installed in the free space on the right side of the stand installed in the box-out section 36 of the tunnel wall 35, adjacent to the already installed fire extinguisher/electrical device storage housing 10b, by attaching and fixing it to the stand. Also, as shown in FIG. 6, the fire hydrant device storage housing 10a is installed by positioning and matching the connecting surface 48 of the fire hydrant device storage housing 10a with the connecting surface 42 of the fire extinguisher/electrical device storage housing 10b, and then connecting the fire hydrant device storage housing 10a and the fire extinguisher/electrical device storage housing 10b by passing a bolt through one of the through holes 44, 48 and screwing it into the nut inserted from the other side to fasten and fix it, and then installing it.

[c. Installation of fire extinguishers and electrical equipment storage enclosures]
Next, the construction work of the fire extinguisher/electrical device housing will be explained. In this explanation, reference will be made to Fig. 7 showing the state of the fire extinguisher/electrical device housing installed in the box removal section, Fig. 8 showing the state of the fire extinguisher/electrical device housing before wiring work, and Fig. 9 showing the state of the fire extinguisher/electrical device housing after wiring work is completed.

As shown in FIG. 7, the construction work (installation work) for the fire extinguisher/electrical equipment storage housing 10b is carried out as a preliminary step by setting up the stand 28 at the bottom of the box-out section 36 of the tunnel wall 35 along which the guard passage 38 is provided, and then placing the fire extinguisher/electrical equipment storage housing 10b on the left side of the stand 28. The fire extinguisher/electrical equipment storage housing 10b is then attached and fixed on the stand 28 by tightening bolts between the stand 28 and the housing 10b, etc.

When the fire extinguisher/electrical equipment storage housing 10b is installed, the side work opening 40 of the fire extinguisher/electrical equipment storage housing 10b is located on the side of the open space 52 where the fire hydrant equipment storage housing 10a will be installed later, and workers can use the open space 52 and the side work opening 40 in addition to the opening formed by opening the fire extinguisher door 18 and the electrical equipment door 20 to perform wiring work to pull the wiring cable from the outside into the fire extinguisher/electrical equipment storage housing 10b and connect it to the terminal boxes 30, 32. This ensures sufficient working space for wiring work, making it possible to easily and efficiently perform wiring work for the terminal boxes 30, 32.

As an example of wiring work for the terminal box 30, first open the fire extinguisher door 18 and the electrical equipment door 20 of the fire extinguisher and electrical equipment storage housing 10b as shown in Figure 8. In addition, since a switch cable 82 is connected from the terminal box 32 as a wiring cable for connecting the pump start switch 76 and the pump start interlocking switch 74 provided in the fire hydrant equipment storage housing 10a, the switch cable 82 is pulled out from the side work opening 40 into the open space 52.

Next, as shown in FIG. 9, a high-voltage cable 78 and a low-voltage cable 80 are pulled in as external wiring cables through an electric conduit 84 pulled down from the bottom of the fire extinguisher/electrical equipment storage housing 10b, and the high-voltage cable 78 is connected to the terminal block of the terminal box 30, thereby connecting the high-voltage cable 78 to the red indicator light 22 via the terminal box 30, and the low-voltage cable 80 is connected to the terminal block of the terminal box 32, thereby connecting the low-voltage cable 80 to the transmitter 24, telephone jack 25, answer lamp 26, pump start switch 76, and pump start interlock switch 74 via the terminal box 32. The switch cable 82 may be pulled out after the external wiring cables have been laid out.

[d. Terminal box]
Next, the terminal box will be described. In this description, reference will be made to Fig. 10, which shows the terminal box taken out. Fig. 10(A) is a top view, Fig. 10(B) is a front view, Fig. 10(C) is a side view of the terminal box 30. Although the terminal boxes 30 and 32 are similar to each other, the terminal box 30 will be described here.

The terminal box 30 is composed of a box body 300 and a lid member 302, and its dimensions (length (top and bottom) x width (left and right) x depth (front and back) when placed inside the fire extinguisher and electrical equipment storage housing 10b are approximately 80 mm x 220 mm x 140 mm. The lid member 302 is placed at the opening of the box body 300 so that it can be opened and closed by a hinge 304, and the lid member 302 is fixed in the closed position by a knob 308. When the knob 308 is operated to release the fixation, the lid member 302 is opened as shown by the lid member 3020 in dotted lines, and it becomes possible to connect a wiring cable to the terminal block 300a on which multiple terminals are arranged. The lid member 302 is made of transparent resin so that the terminal block 300a inside can be seen.

In addition, multiple waterproof connectors 306 are arranged on the top and sides of the box body 300, for example, two on each of the top and one side, ensuring waterproofing of the wiring cable inserted into the waterproof connectors 306.

[e. Fire hydrant device cable wiring system]
Next, the cable wiring system of the fire hydrant device will be described with reference to Fig. 11 showing the cable wiring system of the fire hydrant device and Fig. 12 showing the details of the wiring to the terminal box to which the low-voltage cable is connected.

As shown in FIG. 11, the electrical door 20 of the fire extinguisher/electrical equipment storage housing 10b is provided with the following electrical equipment: a red indicator light 22, a transmitter 24, a telephone jack 25, and a response lamp 26. The red indicator light 22 is connected to the corresponding terminal of the terminal block 300a of the terminal box 30, and the transmitter 24, the response lamp 26, and the telephone jack 25 are connected to the corresponding terminal of the terminal block 320a of the terminal box 32.

The fire hydrant device storage housing 10a is also provided with a pump start switch 76 and a pump start interlocking switch 74, which are connected to the corresponding terminals of the terminal block 320a of the terminal box 32.

A high-voltage cable 78, which is supplied with, for example, AC 100V power from the outside, is pulled into the fire extinguisher/electrical equipment storage housing 10b, and the high-voltage cable 78 is connected to the corresponding terminal of the terminal block 300a of the terminal box 30, and is then connected to the red indicator light 22.

In addition, a low-voltage cable 80 (which is a single multi-core cable, but is shown in the cable wiring system of FIG. 11 as a telephone cable 80a corresponding to the telephone jack 25, a response lamp cable 80b corresponding to the response lamp 26, a transmitter cable 80c corresponding to the transmitter 24, and a switch cable 80d corresponding to the pump start switch 76 and the pump start interlocking switch 74) is pulled into the fire extinguisher/electrical equipment storage housing 10b from the outside and supplied with, for example, a DC 48V power source. The low-voltage cable 80 is connected to the corresponding terminals of the terminal block 320a of the terminal box 32, and is thereby connected to the transmitter 24, the telephone jack 25, the response lamp 26, the pump start switch 76, and the pump start interlocking switch 74.

As shown in FIG. 12, the pump start switch 76 and the pump start interlocking switch 74 are connected to the terminals of the terminal block 320a of the terminal box 32 as a parallel circuit in which the wiring of the pump start interlocking switch 74 is connected to the terminal of the pump start switch 76. In addition, the terminal of the terminal block 320a of the terminal box 32 to which the wiring of the pump start switch 76 and the pump start interlocking switch 74 is connected is connected to the wiring of the transmitter 24 by a jumper wiring to the terminal to which the wiring of the transmitter 24 is connected.

[g. Modifications of the present invention]
A description will be given of modified examples of the fire hydrant device and the installation method thereof according to the present invention. The fire hydrant device and the installation method thereof according to the present invention include the following modifications in addition to the above-described embodiment.

(Side work opening)
In the above embodiment, the side work opening is formed on the side surface that is the dividing surface of the fire extinguisher/electrical equipment storage housing, but a partition plate with a door structure that can be opened and closed or a removable partition plate may be arranged on the side surface that is the dividing surface, and the side work opening may be formed by opening or removing the partition plate. In this case, when the wiring work from the side work opening is completed, the partition plate is closed and the fire extinguisher/electrical equipment storage housing and the fire hydrant storage housing are connected and fixed.

(Installation locations of fire hydrants)
In the above embodiment, the fire hydrant device is described as being installed in a box-cut section of a tunnel wall along which a guard passage runs in a tunnel having a road, but the device can also be applied to other installation locations.

(Position for pulling in external wiring cable)
In the above embodiment, a wiring cable is pulled in from the outside by providing an electrical conduit at the bottom of the fire extinguisher/electrical equipment storage housing, but the pulling position can be any position on the fire extinguisher/electrical equipment storage housing depending on the installation location, the surrounding environment, etc.

(others)
Furthermore, the present invention includes appropriate modifications that do not impair the objects and advantages of the present invention, and further, the present invention is not limited to the numerical values shown in the above embodiment.

10: Fire hydrant device 10a: Fire hydrant device storage housing 10b: Fire extinguisher and electrical equipment storage housing 11a, 11b: Decorative frame 12: Fire hydrant door 1210: Door handle 14: Maintenance door 16: Fire hydrant storage section 1610: Valve storage section 1620: Hose storage section 18: Fire extinguisher door 1810: Door handle 1820: Viewport 19: Fire extinguisher storage section 20: Electrical equipment door 22: Red indicator light 24: Transmitter 25: Telephone jack 26: Answering lamp 28: Stand 30, 32: Terminal box 34: Fire extinguisher 35: Tunnel wall surface 36: Box removal section 38: Supervisor passage 40: Side work opening 42, 48: Connection surface 44, 50: Through hole 52: Free space 48: Control unit 55: Water supply pipe 56: Water supply hydrant 57: Fire hydrant valve 58: Automatic pressure regulating valve 60: Fire hydrant valve opening/closing lever 61: Operation box 62: Fire hose 64: Nozzle 65: Nozzle holder 66: Hose storage frame 67: Interlocking box 68: Hose guide 70: Cable rack 72: Cable passage 74: Pump start interlocking switch 76: Pump start switch 78: High voltage cable 80: Low voltage cable 82: Switch cable 84: Electric conduit

Claims (6)

A fire hydrant device having an electric circuit installed therein and a fire hydrant device disposed therein,
The housing of the fire hydrant device includes:
A first housing in which an electric circuit connection portion for connecting the electric circuits including an external electric circuit drawn in from the outside is disposed;
A second housing connected to the first housing in an installed state and having the fire hydrant device disposed therein;
It is divided into
The first housing includes:
a side work opening that can be used for wiring work for connecting the external electric circuit to the electric circuit connection portion, on a side surface of the housing to which the second housing is connected in an installed state;
a connecting structure that connects and fixes the second housing at a position that closes the side work opening when the second housing is installed; and
A fire hydrant device comprising:
The fire hydrant device according to claim 1,
The first housing has a predetermined electrical device disposed therein and connected to the electrical path connection portion by an internal electrical path,
The second housing is a fire hydrant device, characterized in that it is connected to the electrical circuit connection portion by an internal electrical circuit and has an operating unit for starting external pump equipment.
The fire hydrant device according to claim 1 or 2,
A fire hydrant device characterized in that the external electrical circuit is pulled into the inside from a predetermined position of the first housing.
A method for constructing a fire hydrant device having an electric circuit installed therein and a fire hydrant device housed therein, comprising the steps of:
The housing of the fire hydrant device includes:
A first housing in which an electric circuit connection portion for connecting the electric circuits including an external electric circuit drawn in from the outside is disposed;
A second housing connected to the first housing in an installed state and having the fire hydrant device disposed therein;
It is divided into
The construction of the fire hydrant device is as follows:
The first housing is installed in a predetermined installation location;
With the first housing installed at the installation location, a wiring operation is performed to connect the external electric circuit to the electric circuit connection portion by utilizing a side work opening formed in a housing side surface to which the second housing will be connected in a later process and an empty space in which the second housing will be disposed;
A method for installing a fire hydrant device, characterized in that, after the wiring work, the second housing is connected and fixed to a position that closes the side work opening of the first housing, and the second housing is installed.
The method for installing a fire hydrant device according to claim 4,
Before the installation of the fire hydrant device,
A predetermined electrical device is disposed in the first housing, and the fire hydrant device including an operation unit for starting an external pump facility is disposed in the second housing;
an internal electric circuit is drawn from the electric circuit connection portion to connect to the electrical device disposed in the first housing, and an internal electric circuit is drawn from the electric circuit connection portion to connect to the operation portion disposed in the second housing;
During the wiring work in the construction of the fire hydrant device,
A method for installing a fire hydrant device, characterized in that an internal electrical circuit for connecting to the operating unit arranged in the second housing is pulled out from the side work opening into the open area.
The method for installing a fire hydrant device according to claim 4 or 5,
A method for installing a fire hydrant device, characterized in that, during the wiring work, the external electrical circuit is pulled into the inside from a predetermined position of the first housing.

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