Fire hydrant equipment and stands

Abstract

To improve workability by minimizing restriction of the width of a watchman passage without any advance hole shaping to be formed in a tunnel wall surface and enabling installation of a fire hydrant apparatus at an appropriate height on the watchman passage, the installation place thereof.SOLUTION: A pedestal 28 is installed close to a tunnel wall surface 26 on a tunnel watchman passage 34, and housings 11a and 11b of a fire hydrant apparatus 10 are fixedly mounted on the pedestal 28. The pedestal 28 is comprised of a first pedestal 30 and a second pedestal 32, where a lateral face in the depth direction of the first pedestal 30 has an inverted trapezoid shape with an upper side longer than the bottom side in order to follow a curved shape of the tunnel wall surface 26. The fire hydrant apparatus 10 is thinned by defining the minimum width in the width direction of the housing bottom as a prescribed width corresponding to the outside diameter of a fire-extinguisher to be installed inside thereof.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a fire hydrant device and a stand that stores a fire hose, a fire extinguisher, etc. and is installed in a tunnel. [Background technology]

[0002] Conventionally, fire hydrants have been installed as emergency tunnel equipment in tunnels on expressways and expressways. A fire hydrant consists of a housing with a hydrant door, a hose with a nozzle at the end, and valves housed in a fire hydrant storage compartment, and a fire extinguisher storage compartment with a fire extinguisher door, which houses, for example, two fire extinguishers. Furthermore, fire hydrant systems are generally installed by embedding them into the tunnel wall, cutting out boxes, at intervals of, for example, 50 meters along the length of the tunnel.

[0003] However, in tunnels constructed using methods such as shield tunneling, the structure of the tunnel body makes it difficult to cut out a box in the tunnel wall and install a fire hydrant device by embedding it in place, due to the cost and effort involved, so the fire hydrant must be installed in an exposed position in the guard's passage.

[0004] Furthermore, in order to install the fire hydrant device on the tunnel wall surface without removing the box, a wall-mounted structured stand has been proposed for installing the fire hydrant device on the tunnel wall surface. In this case, the stand is composed of a main support part that is fixed to the wall surface and a position-maintaining member that maintains the position of the fire hydrant device (Patent Document 2). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-055073 [Patent Document 2] Japanese Patent Application Publication No. 2020-078429 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in a wall-mounted structure where a fire hydrant is installed on a tunnel wall, in order to install the fire hydrant at a predetermined height above the guard passage, multiple insert anchors are embedded in the tunnel wall's framework and the mount is fixed to these insert anchors. After that, the fire hydrant, which is a heavy object, must be pushed up and bolts must be passed through the predetermined bolt holes before it can be fixed to the mount. In this case, the location of the bolt holes formed on the back side of the fire hydrant must be found, and considering the structure of the fire hydrant, the decorative panel, forward-tilting door, upper door, fire extinguisher door, etc. are closed, so it is necessary to find the location by feel, making installation on the wall quite difficult.

[0007] Furthermore, embedding multiple insert anchors into the tunnel wall structure requires a lot of time and labor, and multiple holes for fixing the bolts are drilled on the back of the fire hydrant device. Therefore, if there is rainwater inside the tunnel or water leaks onto the tunnel wall, it is expected that water will seep into the fire hydrant housing and affect the internal equipment. Therefore, many issues remain, such as the desire to minimize the number of holes as much as possible.

[0008] To solve the problem of installing fire hydrants on tunnel walls with wall-mounted structures, it is possible to install the fire hydrant in an exposed state above the guard passage, a so-called stationary structure. However, the installation of the fire hydrant restricts the width of the guard passage, and in order to ensure the width of the guard passage, it is necessary to make the depth of the fire hydrant as small as possible, and making the fire hydrant thinner remains a problem to be solved. This problem is also true for wall-mounted structures.

[0009] In addition, the reporting device door installed on the fire hydrant device is equipped with a transmitter for reporting fires, so that emergency reports can be made reliably in the event of an emergency. The Fire Service Act stipulates that the transmitter must be installed at a height of between 800mm and 1500mm above the surface where a person will stand when operating the device, such as the road surface of a guard's passage. A structure that installs the fire hydrant device at a position higher than the road surface to satisfy this regulation remains a problem to be solved.

[0010] The present invention aims to provide a fire hydrant device and a stand that can be installed at an appropriate height above the observer's passage at the installation location, minimizing restrictions on the width of the observer's passage without cutting out a box from the tunnel wall, and that improves workability. [Means for solving the problem]

[0011] (First invention: Fire hydrant device) The present invention is a fire hydrant device that is installed inside a tunnel having a road and has a fire hose and a fire extinguisher stored in a housing, The housing is mounted and fixed on a platform installed close to the wall of the tunnel in the guard passage of the tunnel.

[0012] (Storage space inside the stand) The stand has a storage space inside its outer shape.

[0013] (mounting height) When the tunnel wall has a circular cross section, the height of the stand is set so that the center line of the height direction of the housing coincides with the horizontal center line of the circular cross section, or so that the distance between the two center lines is close to or less than a specified dimension.

[0014] (Configuration of the mounting frame) When the stand is installed on the road surface at the installation location, the side in the depth direction has an inverted trapezoidal shape with the top side longer than the bottom side.

[0015] (Case shape) The housing has a predetermined minimum width between the bottom end of the rear surface and the bottom end of the front surface that corresponds to the outer diameter of the fire extinguisher housed inside.

[0016] (Height and width of the enclosure) The housing has a predetermined storage volume capable of storing predetermined equipment including a fire hose and a fire extinguisher, and its height and width are set to fill the predetermined storage volume.

[0017] (Tunnel wall support at the top of the housing) The housing is provided with a wall fixing member that attaches the upper side to the wall of the tunnel and supports it.

[0018] (Putting in water supply piping through the frame) The stand has a piping support section in the storage space through which the water supply piping is passed and led into the housing.

[0019] (Preventing freezing of water supply pipes passing through the frame) The pipe support section is provided with a freeze prevention structure using a heat insulating material or a heat insulating heater for the water supply pipe.

[0020] (Pulling in the cable through the frame) The stand is provided with a cable rack in the storage space through which cables are passed and pulled into the housing.

[0021] (Second invention: Fire hydrant device stand) The present invention is a frame for mounting and fixing a housing of a fire hydrant device inside a tunnel having a road, It has a storage space inside its exterior and is installed close to the tunnel wall in the tunnel guard passage.

[0022] (mounting height) When the tunnel wall has a circular cross section, the height of the stand is set so that the center line of the height direction of the housing coincides with the horizontal center line of the circular cross section, or so that the distance between the two center lines is close to or less than a specified dimension.

[0023] (Configuration of the mounting frame) When the stand is installed on the road surface at the installation location, the side in the depth direction has an inverted trapezoidal shape with the top side longer than the bottom side.

[0024] (Putting in water supply piping through the frame) The stand has a piping support section in the storage space through which the water supply piping is passed and led into the housing.

[0025] (Preventing freezing of water supply pipes passing through the frame) The pipe support section is provided with a freeze prevention structure using a heat insulating material or a heat insulating heater for the water supply pipe.

[0026] (Pulling in the cable through the frame) The stand is provided with a cable rack in the storage space through which cables are passed and pulled into the housing. [Effects of the Invention]

[0027] (First invention: Effect of fire hydrant device) According to the fire hydrant device of the present invention, the housing is attached and fixed to a stand that is installed close to the tunnel wall in the tunnel guard passage while ensuring passage space above the guard passage (so as not to obstruct passage), so that even in a structure where it is not possible to cut a box out of the tunnel wall and install the fire hydrant device by embedding it in the tunnel, it is possible to install a fire hydrant device that minimizes the amount of protrusion of the guard passage above the road surface (i.e., the amount of protrusion from the tunnel wall toward the road side).

[0028] The mount is fixed to the road surface with anchor bolts embedded in the guard passageway. Embedding the anchor bolts in the road surface is simple, and the anchor bolts can also be easily inserted into bolt holes at the base of the mount for fastening. This improves the ease of installation. Setting the mount height also makes it possible to easily and simply set the height of the transmitter installed on the fire hydrant device within the legally mandated height range. Furthermore, because the bolt holes for attaching and fastening the fire hydrant device to the mount are formed at the bottom of the device, it is possible to reliably prevent water from entering the fire hydrant housing and affecting the internal equipment in the event of rainwater in the tunnel or water leaking onto the tunnel wall.

[0029] (Effect of storage space inside the stand) The mount has a storage space inside its exterior. By storing, for example, the wiring and piping for the hydrant device in this storage space, it is possible to make effective use of the space. This allows the overall installation space for the hydrant device and its associated wiring (cables), piping, and other items to be made thinner, and the amount of protrusion of the monitor's walkway above the road surface can be reduced.

[0030] (Effect of stand height) Furthermore, when the tunnel wall has a circular cross section, the height of the mounting base is set so that the center line of the height direction of the housing coincides with the horizontal center line of the circular cross section, or the distance between the two center lines is close to or less than a specified dimension, thereby positioning the housing closest to the curved shape of the tunnel wall, which is an arc, minimizing the amount of protrusion of the fire hydrant device into the observer's passage and making it possible to reduce the restrictions on the width of the passage.Furthermore, by setting the specified height of the mounting base so that the center line of the height direction of the housing is as close as possible to the horizontal center line of the circular cross section, the protrusion (protrusion) of the fire hydrant device into the observer's passage is reduced, making it possible to reduce the restrictions on the width of the passage.

[0031] (Effect of the mounting structure) Furthermore, the vertical cross-sectional shape of the stand on which the fire hydrant device is mounted and fixed (the vertical cross-sectional shape when viewed from the side) on the side facing the tunnel wall corresponds to the curvature of the tunnel wall; specifically, the side facing the depth has the shape of an inverted trapezoid, with the top side longer than the bottom side. This makes it possible to install the stand closer to the wall than if the side shape of the stand were rectangular, and as a result, the casing of the fire hydrant device that is mounted and fixed on the stand is also positioned closer to the wall, making it possible to reduce restrictions on the guard's passage due to the installation of the fire hydrant device.

[0032] (Effect of the housing shape) Furthermore, the width between the bottom end of the back and the bottom end of the front of the fire hydrant device's housing is a predetermined minimum width that corresponds to the outer diameter of the fire extinguisher stored inside. This means, for example, that the depth dimension of the housing is about half of the conventional one, making it significantly thinner than conventional fire hydrant devices that are installed by cutting a box out of a wall, and reducing the restrictions on the width of the guard's passage.

[0033] (Effect of the height and width of the case) In addition, the housing of the fire hydrant device has a specified storage volume that can store specified equipment including the fire hose and the fire extinguisher, and the height and width are set to fill this specified storage volume, so even if the housing is made thin, the height and width can be increased to compensate for the thinning, making it possible to store the necessary equipment.

[0034] (Effect of tunnel wall support on top of the housing) Furthermore, the upper side of the housing is attached to and supported by the wall of the tunnel using a wall support member, so that even if the housing becomes prone to tipping over due to its thinness, it can be reliably supported on the tunnel wall.

[0035] (Effect of pulling in water supply piping through the frame) In addition, the mount has a storage space inside its exterior and is equipped with a piping support part that passes the water supply piping through the storage space and pulls it into the housing, eliminating the need to secure piping installation space beside or behind the fire hydrant device, making it possible to reduce restrictions on the observer's passage. Also, because the piping is not exposed around the hydrant device, the equipment is properly finished and does not detract from its appearance. Furthermore, because at least a portion of the piping arrangement space is provided in the storage space of the mount, the piping arrangement space inside the fire hydrant device can be reduced, and the fire hydrant itself can be made thinner.

[0036] (Effect of preventing freezing of water supply pipes passing through the frame) In addition, the piping support section is equipped with an anti-freeze structure using insulation material or an insulation heater for the water supply piping, which ensures that the piping will not freeze when installed in a tunnel in a cold region.Furthermore, since the piping support section is installed on a frame, it is easy to install the insulation material or the insulation heater, and maintenance is also simple.

[0037] (Effect of pulling the cable through the frame) In addition, the mount has a storage space inside its exterior and is equipped with a cable rack through which cables are passed and pulled into the fire hydrant device. This eliminates the need to secure space to pass cables beside or behind the fire hydrant device, thereby reducing restrictions on the guard's passageway. Furthermore, since the cables are not exposed around the fire hydrant device, the finished appearance of the equipment is appropriate and does not detract from its appearance. Furthermore, since at least a portion of the space required for cable wiring is provided within the storage space of the mount, the cable wiring space inside the fire hydrant device can be reduced, and the fire hydrant device itself can be made thinner.

[0038] (Second invention: Effect of the stand) The effect of the stand for mounting and fixing the fire hydrant device according to the present invention inside the tunnel is the same as that of the stand for the fire hydrant device described above, so a description thereof will be omitted. [Brief explanation of the drawings]

[0039] [Figure 1] FIG. 10 is an explanatory diagram showing an embodiment of a fire hydrant device installed on a guard passage. [Figure 2] FIG. 2 is an explanatory diagram showing the installation height of the fire hydrant device on a stand. [Figure 3] This is an explanatory diagram showing the internal structure of the fire hydrant device from the front with the fire hydrant door open. [Figure 4] FIG. 2 is an explanatory diagram showing the internal structure of the fire hydrant device in plan view. [Figure 5] FIG. 2 is an explanatory side view showing the internal structure of the fire hydrant device. [Figure 6] FIG. [Figure 7] 1A and 1B are explanatory diagrams showing the top, front, and side of the stand. [Figure 8] FIG. 10 is an explanatory diagram showing a fire hydrant device installed on a stand equipped with a piping support portion. [Figure 9] FIG. 9 is a perspective view showing the stand in FIG. 8. [Figure 10] FIG. 9 is a perspective view showing the pipe support portion of FIG. 8. [Figure 11] 9 is a perspective view showing the pipe support part of FIG. 8 from the front, side and top. [Figure 12] FIG. 10 is an explanatory diagram showing a rack provided with a freeze prevention structure. [Figure 13] 13 is an explanatory view showing an assembly and disassembly structure of one side of the pipe support part of FIG. 12. FIG. [Figure 14] FIG. 1 is a perspective view showing a stand equipped with a cable rack. DETAILED DESCRIPTION OF THE INVENTION

[0040] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a fire hydrant device and a mount according to the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the following embodiments.

[0041] [Basic concept of the embodiment] First, a basic concept of the embodiment will be described. The embodiment generally relates to a fire hydrant device for a tunnel and a mounting base thereof.

[0042] Here, a "fire hydrant device" is a type of emergency tunnel equipment installed in tunnels such as expressways and motorways, and is a device that houses a fire hose and a fire extinguisher in a housing installed in the tunnel, and is a concept that includes fire hydrant equipment.

[0043] Furthermore, the term "mounting" refers to a structure that supports an object using pillars and beams, etc., and includes concepts such as a support base, foundation, base, seat, and base. The mounting of this embodiment is installed close to the tunnel wall on a monitor's passage that runs along the longitudinal direction of a curved tunnel wall constructed by a shield tunneling method or the like, and the casing of the fire hydrant device is attached and fixed at a predetermined height above the monitor's passage. Furthermore, when the mounting of this embodiment is installed on the road surface of the monitor's passage where it is installed, the side in the depth direction has an inverted trapezoidal shape with the top side longer than the bottom side so as to follow the curved shape of the tunnel wall.

[0044] Furthermore, the mount according to this embodiment installs the fire hydrant device at a height that reduces the amount of protrusion toward the observer's passage, and when the tunnel wall has a circular cross section, the mount height is set so that the center line of the height direction of the housing coincides with the horizontal center line of the circular cross section, or so that the distance between the two center lines is close to or less than a predetermined dimension. Here, when the mount height is set so that the center line of the height direction of the housing coincides with the horizontal center line of the circular cross section, the amount of protrusion toward the observer's passage is minimized, making it possible to reduce the restriction on the passage width. Also, when the mount height is set so that the center line of the height direction of the housing is as close as possible to the horizontal center line of the circular cross section, the amount of protrusion toward the observer's passage is reduced by the amount of proximity, making it possible to reduce the restriction on the passage width.

[0045] In addition, the housing of the fire hydrant device in this embodiment is made thin by setting the width between the bottom end of the back surface and the bottom end of the front surface to a specified minimum width that corresponds to the outer diameter of the fire extinguisher stored inside, and this, combined with the installation height of the fire hydrant device on the stand, makes it possible to reduce restrictions on the road surface width of the monitor's passage.

[0046] Furthermore, even if the housing is made thinner, the height and / or width of the housing is set to be large so as to satisfy the specified storage volume capable of storing specified equipment including fire hoses and fire extinguishers.

[0047] Furthermore, as the housing becomes thinner, support by the stand becomes unstable, so the upper side of the housing is attached to the tunnel wall and supported by a wall support member.

[0048] The mount of this embodiment also includes a pipe support section that connects the water supply pipe to the housing, and when installed in a cold region, the pipe support section provides the water supply pipe with a freeze prevention structure using a heat insulating material or a heat-insulating heater. The mount of this embodiment also includes a cable rack that connects the cable to the housing. This effectively utilizes the space inside the mount, eliminating the need to secure space around the fire hydrant device for connecting pipes and cables.

[0049] Specific embodiments will be described below. In the specific embodiments shown below, a "fire hydrant device stand" is composed of a "first stand having an inverted trapezoid shape fixed to the monitor's passage" and a "second stand placed on top of the first stand to which the housing is attached and fixed," and "the housing is made thin by setting the width between the bottom end of the back surface and the bottom end of the front surface to a predetermined minimum width corresponding to the outer diameter of the fire extinguisher stored inside."

[0050] [Specific details of the embodiment] The fire hydrant device and the mounting base of the fire hydrant device will be explained in more detail below. a. Fire hydrant equipment a1. Overview of fire hydrant equipment a2. Installation of fire hydrant equipment a3. Installation height and thinness of fire hydrant equipment a4. Internal structure of fire hydrant equipment b. Fire hydrant equipment stand c. Stand with piping support c1. Second frame c2. Piping support part c3. Piping support with anti-freeze structure c4. Installation procedure for pipe supports with anti-freeze structure d. Stand with cable rack e. Modifications of the present invention

[0051] [a. Fire hydrant equipment] The fire hydrant device and the mounting base for a tunnel according to this embodiment will be described in more detail below. Figure 1 is an explanatory diagram showing the installation of the fire hydrant device in a tunnel, with Figure 1(A) showing the installation of the fire hydrant device as seen from the cross section of the tunnel, and Figure 1(B) showing the installation of the fire hydrant device as seen toward the tunnel wall.

[0052] (a1. Overview of fire hydrant equipment) An overview of the fire hydrant device will be given below. As shown in Figure 1(B), the fire hydrant device 10 has a structure divided into a housing 11a on the fire hydrant storage side and a housing 11b on the fire extinguisher storage side, and decorative frames 13a and 13b are attached to the front of the housings 11a and 11b.

[0053] 1, the X, Y, and Z directions are perpendicular to each other. Specifically, as shown in FIGS. 1(A) and 1(B), when viewing the front face of the fire hydrant device from the front, 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. The +X side of the X direction is the right side, and the -X side is the left side. The +Y side of the Y direction is the top side, and the -Y side is the bottom side. The +Z side of the Z direction is the front side, and the -Z side is the rear side. This also applies to FIGS. 2 to 28, which illustrate embodiments of the present invention.

[0054] The door opening of the decorative frame 13a on the fire hydrant storage section side is divided into upper and lower sections, and a forward-leaning fire hydrant door 12 that opens downward on hinges 12a is installed at the bottom of the door opening, and a maintenance door 14 that opens upward on hinges 14a is installed at the top of the door opening, and inside the fire hydrant storage section, fire hoses and valves including fire hydrant valves are stored.

[0055] On the left side of the door opening of the decorative frame 13b attached to the fire extinguisher storage section, a fire extinguisher door 16 is provided that opens sideways to the left on hinges 16a, making it possible to store, for example, two fire extinguishers in the fire extinguisher storage section inside. In addition, a viewing window 17 is provided below the fire extinguisher door 16, making it possible to check from the outside whether the fire extinguisher is stored or not.

[0056] An electrical door 18 that opens sideways to the right on hinges 18a is provided on the right side of the door opening in decorative frame 13b. Electrical equipment such as a red indicator light 20, a transmitter 22, and an answer lamp 24 is provided on electrical door 18, and a telephone jack 25 (see FIG. 3) is provided inside the housing of electrical door 18.

[0057] The red indicator light 20 is always lit, allowing the location of the fire hydrant device 10 to be confirmed from a distance. When a fire occurs and the transmitter 22 is pressed to turn on the push button switch, a transmission signal is sent, and the disaster prevention receiving panel that receives this signal outputs a fire alarm. The fire hydrant device 10 receives a response signal from the disaster prevention receiving panel and turns on the red indicator light 20 flashes and the response lamp 24 lights up.

[0058] (a2. Installation of fire hydrant equipment) The installation of fire hydrants in tunnels will be explained in more detail below. A road 36 is constructed in the longitudinal direction of the tunnel below the cylindrical (circular cross section) tunnel body constructed using the shield tunneling method, and a guard passage 34 is constructed at a predetermined height above the road 36 on the underside of the tunnel wall 26 along one side of the road 36.

[0059] Since it is difficult to cut out a box from the tunnel wall 26 when using the shield tunneling method to install the fire hydrant device 10, a mount 28 is installed close to the tunnel wall 26 above the monitor's passage 34, and the housings 11a and 11b of the fire hydrant device 10 are attached and fixed to the mount 28. Here, the height H1 of the mount 28 is set so that the height from the road surface of the monitor's passage 34 to the transmitter 22 installed on the fire hydrant device 10 is within the legally specified range of 800 mm to 1500 mm.

[0060] The mount 28 of this embodiment is composed of a first mount 30 and a second mount 32. As shown in Fig. 1(A), the first mount 30 has a side shape that is an inverted trapezoid with the top side longer than the bottom side, and the rear side forms a sloped surface that slopes diagonally downward along the curved shape of the tunnel wall surface 26. The second mount 32 is fixed on top of the first mount 30, and is used to attach and fix the housings 11a and 11b of the fire hydrant device 10.

[0061] (a3. Installation height and thinness of fire hydrant equipment) The installation height and thinning of the fire hydrant device will be explained in more detail below. In order to reduce the restriction on the passage width caused by the protrusion (protrusion) of the fire hydrant device 10 installed above the monitor passage 34 by the mount 28, the installation height of the fire hydrant device 10 is optimized, and at the same time, the fire hydrant device 10 is made as thin as possible.

[0062] First, the optimization of the height H1 of the mounting base 28 will be explained in more detail. Fig. 2 shows a schematic diagram of the installation of a fire hydrant device in a tunnel cross section. The tunnel wall 26 on which the fire hydrant device 10 is installed has a circular cross section, and in Fig. 2(A), the height H1 of the mounting base 28 is set so that the horizontal tunnel center line SL1 from the tunnel center (center of the circular cross section) P of the fire hydrant device 10 installed on the monitor passage 34 is as close as possible to the horizontal housing center line SL2 passing through the center of the height direction of the fire hydrant device 10. Note that the fire hydrant device 10 shown here has a vertically long rectangular side surface.

[0063] In this case, the closer the housing center line SL2 is to the tunnel center line SL1, the less the fire hydrant device 10 protrudes from the tunnel wall surface 26, making it possible to reduce restrictions on the road width.

[0064] 2(B) shows a case where the height H1 of the mount 28 is set so that the housing center line SL2 coincides with the tunnel center line SL1. In this case, the degree to which the fire hydrant device 10 protrudes from the tunnel wall surface 26 can be minimized, further reducing the constraints on the width of the guard passage. However, this should be adjusted to the extent possible, taking into account the ease of removing the fire extinguisher, etc.

[0065] Next, the thinning of the fire hydrant apparatus 10 will be described in more detail. To thin the fire hydrant apparatus 10, it is effective to shape the back surface of the housing of the fire hydrant apparatus 10 so that it conforms to the tunnel wall surface 26. Any shape can be used to thin the housings 11a, 11b of the fire hydrant apparatus 10. For example, as shown in FIG. 1(A), the side shape of the housings 11a, 11bl is such that, in the upper portion at height H3, the front and back surfaces 15a are vertical, while in the lower portion at height H4, the front surface is vertical, but the back surface 15b is a downwardly inclined surface facing forward, conforming to the curved shape of the tunnel wall surface 34, with the width at the bottom of the housings 11a, 11b being at its narrowest. The back surface 15b may be a vertical surface instead of an inclined surface.

[0066] Here, the minimum width (minimum depth) of the bottom of the housings 11a and 11b is set to match the diameter of the fire extinguisher to be stored in housing 11b, which serves as the fire extinguisher storage section. Since the diameter of the fire extinguisher generally does not exceed 150 mm, the minimum width of the bottom of housings 11a and 11b is set to, for example, approximately 180 to 200 mm, taking into account the installation of a fire extinguisher guide. In contrast, the housing width of a known fire hydrant device installed in a box cutout on a tunnel wall is approximately 300 mm, so the minimum housing width of this embodiment can be reduced to approximately half that of a conventional housing. Furthermore, the housing width from the top of back surface 15b, which forms the inclined surface, to back surface 15a is approximately 200 mm, which is approximately two-thirds the width of a conventional housing.

[0067] Although the housings 11a and 11b are made thinner, the storage volume for storing fire hoses, valves, electrical equipment, fire extinguishers, etc. remains unchanged. Therefore, the width W and height H2 of the housings 11a and 11b are increased to obtain the specified storage volume. In this embodiment, the hydrant door 12, maintenance door 14, fire extinguisher door 16, and electrical equipment door 18 are the same size as those of a conventional fire hydrant device installed without a box. As a result, in this embodiment, the width W remains unchanged, but the height H2 is changed to a vertically longer size than that of the conventional device. Of course, both the width W and the height H2 may be increased to obtain the specified storage volume.

[0068] The inside of the monitor passage 34 is a duct 40, through which a main water supply pipe 42 is laid, with branch pipes 44 being drawn out at each installation location of the fire hydrant device 10, and water supply piping 48 is drawn into the inside of the housing 11a through the inside of the mount 28 via a gate valve 46 (for example, a ball valve). Also, although not shown, various cables connected to the fire hydrant device 10 are also laid in the duct 40, and are drawn into the housing 11a from below through the mount 28 at each installation location of the fire hydrant device 10. Therefore, there is no need to secure space to the left, right, or rear of the fire hydrant device 10 for drawing in water supply piping or cables, which also improves the appearance.

[0069] (a4. Internal structure of fire hydrant device) The internal structure of the fire hydrant device will be described in more detail. Figures 3 to 5 show the internal structure of the fire hydrant device, with Figure 3 showing the front with the hydrant door open, Figure 4 showing a plan view, and Figure 5 showing a side view. As shown in Figures 3 to 5, the interior of the housing 11a, which serves as the hydrant storage section (inside the hydrant door 12), is divided into a valve storage section 50a and a hose storage section 50b.

[0070] A water supply pipe 48 is drawn into the valve storage section 50a from below through the stand 28 and connected to a hydrant 54. The water supply pipe 48 also branches downward, where a fire hydrant valve 56 and an automatic pressure regulating valve 58 are provided, and a hose 62 is connected to the water supply pipe 48. The hydrant valve 56 is opened and closed by a hydrant valve opening / closing lever 60. When the hydrant valve opening / closing lever 60 is opened or closed, the hydrant valve 56 is remotely opened or closed by a known wire link mechanism. When the hydrant valve opening / closing lever 60 is opened or closed, a pump start interlock switch provided on the operation box turns on or off in conjunction with the operation. A pump start switch 65 for use by the fire brigade is provided to the upper right of the hydrant 54.

[0071] A hose storage frame 64 is provided in the hose storage section 50b, and a hose 62 is stored in the frame, wound clockwise inward, after being drawn in from below. A nozzle 68 is attached to the tip of the hose 62, which is drawn out through a hose guide 66, and is detachably held by a nozzle holder 70.

[0072] Here, as the height H2 has been increased compared to conventional devices due to the thinner housing 11a, the height of the hose storage frame 64 has also been increased, as shown in Fig. 3. This increases the length per turn (per winding) of the hose 62 and reduces the number of overlapping turns of the hose 62, making it possible to store a hose 62 of a predetermined length, for example, a 30 m hose 62, in an inwardly wound state, even with the thinner housing 11a. Note that if the height of the hose storage section interferes with operation when storing the hose, the width W of the housing 11a is increased rather than the height H2.

[0073] The interior of the housing 11b (inside the fire extinguisher door 16) is a fire extinguisher storage section 52, in which two fire extinguishers 74 are stored, as shown in Fig. 4. Here, the lower rear sides of the housings 11a and 11b form a sloped surface 15b that slopes diagonally downward toward the front, as shown in Figs. 1(A) and 5, and the depth width D1 of the bottom is the minimum width relative to the width D2 of the top, which is the vertical surface 15a. The minimum width D1 of the bottom needs only to be able to store the fire extinguisher 74, and therefore, as mentioned above, corresponds to the diameter of the fire extinguisher 74, and is, for example, about D1 = 180 to 200 mm.

[0074] Terminal boxes 72a and 72b are installed on the back of the fire extinguisher storage section 52. A red indicator light 20 provided on the electrical door 18 is connected to the terminal box 72a, and a transmitter 22, a response lamp 24, and a telephone jack 25 provided on the electrical door 18 are connected to the terminal box 72b, which is further connected to a pump start switch 65 and a pump start interlock switch provided in the valve storage section 50a.

[0075] As the housing 11b has been made thinner, the terminal boxes 72a and 72b cannot be installed on the rear of the housing at the rear of the fire extinguisher 74 as in conventional devices, so they are installed on the rear of the housing in the empty space above the fire extinguisher storage section 52, which has increased as a result of the thinner housing.

[0076] [b. Fire hydrant equipment stand] The fire hydrant device mount will now be described in more detail. Figure 6 is a perspective view of the mount, and Figures 7(A), (B), and (C) show the plan, front, and side views.

[0077] 6 and 7, the mount 28 is made up of a first mount 30 and a second mount 32. The first mount 30 is made by, for example, cutting angle iron or the like to a predetermined length and welding it into a box shape, and the angle iron or the like is arranged so that when viewed from the side, it forms an inverted trapezoid with the top side longer than the bottom side.

[0078] The second frame 32 is, for example, made by arranging angle irons cut to a predetermined length and welding them together in a box shape, and has mounting holes 76, each paired with a front and rear hole, formed in three separate locations along the longitudinal direction on its top surface. The mounting holes 76 are formed at positions corresponding to the mounting holes on the bottom of the housing of the fire hydrant device 10, and with both mounting holes aligned, bolts are passed through and fastened with nuts. The first frame 30 and the second frame 32 are fixed together by any fixing means, such as through bolts and nuts, or by welding.

[0079] In this embodiment, the mount 28 is divided into a first mount 30 for adjusting the mount 28 to the curved shape of the tunnel wall, and a second mount 32 for attaching and fixing the housings 11a and 11b, but the mount 28 may also have an integral structure of both.

[0080] [c. Stand with piping support] The fire hydrant device using a stand with a piping support will be explained in more detail below. Figure 8 is an explanatory diagram showing the installation of a fire hydrant device inside a tunnel, with Figure 8(A) showing the installation of the fire hydrant device as seen from the tunnel cross section, and Figure 8(B) showing the installation of the fire hydrant device as seen toward the tunnel wall.

[0081] As shown in Figure 8, a mount 28 is installed close to the tunnel wall surface 26 of the guard passage 34, and the fire hydrant device 10 is attached and fixed at a predetermined height. The mount 28 of this embodiment is composed of a first mount 30 whose side is an inverted trapezoid as shown in Figure 1, and a second mount 120 equipped with a piping support part 122. A branch pipe 44 from a main water supply pipe 42 laid in a duct 40 rises as a water supply piping 48 via a gate valve 46 and is drawn into the housing 11a of the fire hydrant device 10 through the piping support part 122 provided on the second mount. The rest of the structure is the same as that of the embodiment of Figure 1.

[0082] (c1. Second frame) The second frame 120 having the piping support part 122 will be described in more detail. Fig. 9 shows the second frame 120 extracted from Fig. 8. The second frame 120 has a structure in which angle irons and channel irons are arranged in a box shape and fixed by welding, and mounting holes 121 are formed in three separate locations on both sides of the longitudinal direction of the top surface for mounting and fixing to the bottom of the housing of the fire hydrant device 10, and a piping support part 122 is fixed to the right end side corresponding to the piping lead-in position at the bottom of the housing.

[0083] (c2. Piping support part) The pipe support part 122 will be described in more detail. The pipe support part 122 supports the water supply pipe 48 erected from the duct 40 side on the second frame 120 side, and erects the pipe inside the housing 11a of the fire hydrant device 10 attached and fixed to the second frame 120. The structure and type of the pipe support part 122 are arbitrary, but for example, it is a box shape divided into left and right halves, and has a pipe passing hole 124 formed in the center of the top surface, penetrating vertically.

[0084] Figures 10 and 11 show the pipe support part, with Figure 10(A) showing an oblique view, Figure 10(B) showing one side separated, Figure 11(A) showing a front view, Figure 11(B) showing a side view, and Figure 11(C) showing a plan view.

[0085] The piping support part 122 is composed of support cases 126 and 128 that can be separated into left and right halves, and the threaded part of a through bolt 134 inserted from the side of the support case 128 is screwed into a nut 136 welded to the opening on the opposite side, thereby connecting and fixing the parts together.

[0086] 10(B), one side of support case 126 is, for example, a stainless steel box-like opening that opens inward, and rubber sheet 130 is arranged by adhesive fixation or the like in the opening. Rubber sheet 130 has through-hole 135 into which through-bolt 134 is inserted, and is formed in the vertical center with semi-cylindrical wall 124a that forms one side of piping through-hole 124. Furthermore, through-hole 141 for U-bolt 140 is formed in the center of semi-cylindrical wall 124a of rubber sheet 130.

[0087] As shown in FIG. 11, the U-bolt 140 is fixed to the outside of the support case 126 with the water supply pipe 48 placed in the pipe-through hole 124. support The threaded portion taken out through the plate 142 is tightened with a nut 144, thereby fastening the water supply pipe 48 to the support case 126 side.

[0088] 10(B), but differs in that a recess (not shown) for the arcuate portion of the U-bolt 140 is formed in the semi-cylindrical wall formed in the rubber sheet 132 instead of the through-hole 141 for the U-bolt 140. Furthermore, mounting portions 138 are formed at the four lower corners of the support cases 126 and 128, and are attached and fixed to the inside of the second frame 120 with bolts or the like.

[0089] In this way, by drawing the water supply pipe 48 into the housing 11a through the pipe support part 122 provided on the second frame 120, there is no need to secure installation space for the pipe beside or behind the fire hydrant device 10, which makes it possible to further reduce restrictions on the monitor's passage 34. Furthermore, because the pipe is not exposed around the fire hydrant device 10, the finished condition of the equipment is appropriate and the appearance is not marred.

[0090] (c3. Piping support with anti-freeze structure) A more detailed description will be given of the piping support part with a freeze prevention structure of the second frame 120. A freeze prevention structure using heat insulating material and a heat-insulating heater is provided on the water supply piping leading to the fire hydrant device installed in a tunnel in a cold region.

[0091] Fig. 12 is an explanatory diagram showing a frame equipped with a freeze prevention structure, Fig. 12(A) shows the piping support part of the second frame 120 equipped with a freeze prevention structure, Fig. 12(B) shows the piping support part extracted, and Fig. 13 shows the assembly and disassembly structure of one side of the piping support part extracted.

[0092] The piping support part 148 of this embodiment is a box having a storage space 120a with an internal space sufficient to store the piping section to be prevented from freezing, with the water supply piping 48 from the duct 40 rising as an inlet piping 48a from a piping inlet hole 160 at the bottom of one side of the box, the water supply piping 48 extending laterally and connected to the gate valve 46, and the outlet piping 48b connected to the water supply piping 48 extending from the gate valve 46 rising from a piping outlet hole 162 and connected to the piping on the housing side. The piping support part 148 is composed of support cases 150, 152 that can be split vertically, and are connected and fixed by hinge latch members 158a and lock members 158b provided on the left and right end faces.

[0093] As shown in Fig. 13, one support case 150 has a case body 150a formed of stainless steel or the like, which forms a U-shaped side wall, and a stainless steel bottom plate 155 fixed thereto by welding or the like, and a rubber sheet 154 detachably attached to the top of the case body 150a with screws 168. One side 160a of a piping inlet hole 160 is formed on the left end of the bottom plate 155, and rubber seals 151, 157 are fixed by adhesive or the like to the mating portion of the case body 150a and the bottom plate 155. One side 162a of a piping outlet hole 162 is formed on the right end of the upper rubber sheet 154. The rubber seals 151, 157 seal the mating surfaces when the support cases 150, 152 are mated as shown in Fig. 12(B).

[0094] The support case 152 on the opposite side connected to the support case 150 has a similar structure, but differs in that the former is provided with a lock member 158b and the latter is provided with a hinge latch member 158a.

[0095] (c4. Installation procedure for pipe support with anti-freeze structure) Next, the procedure for attaching the pipe support part 148 to the second frame 120 will be described in more detail. First, prepare the support cases 150, 152 shown in Fig. 12(B), unscrew the rubber sheets 154, 156 to open the top, and lock them by fitting the hinge latch members 158a into the lock members 158b on both ends. In this state, as shown in Fig. 12(A), install it on the right side of the second frame 120, and secure the bottom side with bolts or the like.

[0096] Next, the inlet pipe 48a is placed in the pipe inlet hole 160 of the pipe support portion 148, and the outlet pipe 48b is placed in the pipe outlet hole 162, with the gate valve 46 connected therebetween by the water supply pipe 48.

[0097] A freeze prevention structure (not shown) using thermal insulation or a thermal heater is provided for the inlet pipe 48a, the water supply pipe 48, the gate valve 46, and the outlet pipe 48b incorporated within the pipe support 148. The type and structure of the thermal insulation material used for freeze prevention are arbitrary, but for example, a thermal insulation layer is formed by creating thermal insulation split molds in the shape of pipes and gate valves using polystyrene foam and attaching them to the inlet pipe 48a, the water supply pipe 48, the gate valve 46, and the outlet pipe 48b arranged inside the pipe support 148. Alternatively, a thermal insulation layer may be formed by wrapping wide tape-shaped polyethylene foam, glass wool, rock wool, or the like around the inlet pipe 48a, the water supply pipe 48, the gate valve 46, and the outlet pipe 48b.

[0098] In addition, when heat retention alone is not enough to prevent freezing, a heat-retaining heater is installed that has a self-regulating heater wire inside that generates heat when electricity is passed through it. A self-regulating heater wire is a structure in which two parallel conducting wires are embedded and connected with a self-regulating heating resistor, and when electricity is passed through, the current that flows from one conducting wire to the other through the heating resistor generates heat stably at a temperature not exceeding 100°C.

[0099] Once the work inside the pipe support part 148 is completed, the removed rubber sheets 154, 156 are reinstalled and fixed with screws 168. As shown in Figure 8(B), the water supply pipe 48 rising from the duct 40 passes through the first frame 30 and is pulled into the pipe support part 148 of the second frame 120, so an insulation layer or an insulation heater is also provided on the pipe part passing through the first frame 30.

[0100] In this way, by providing a heat insulating material or a heat-insulating heater on the water supply pipe 48 and the check valve 46 that pass through the pipe support part 148 provided on the second frame 120, freezing prevention is reliably performed when the fire hydrant device 10 is installed in a tunnel in a cold region, and since a freezing prevention structure is provided on the frame, it is easy to install the heat insulating material or the heat-insulating heater, and maintenance is also simplified.

[0101] [d. Stand with cable rack] The rack equipped with a cable rack will be described in more detail. Fig. 14 shows a rack in which a cable rack and a piping support are provided inside a storage space 28a. The rack 28 of this embodiment has an inverted trapezoidal side with the top side longer than the bottom side, a piping support part 172 that passes through a piping through hole 174 is disposed on one side of the rack 28, and a ladder-shaped cable rack 170 is disposed in the longitudinal direction of the middle section of the rack 28 in the height direction.

[0102] The cable raised from the duct 40 is drawn into the cable rack 170 of the stand 28 from the left side, and after being laid on the cable rack 170, it is raised from in front of the piping support part 172 and drawn into the housing of the fire hydrant device 10 which is attached and fixed to the top of the stand 28.

[0103] In this way, by providing the cable rack 170 on the mount 28 and pulling the cables into the housing of the fire hydrant device 10 through the cable rack 170, it is not necessary to secure space to pass the cables beside or behind the fire hydrant device 10, which makes it possible to further reduce restrictions on the guard's passage. Also, because the cables are not exposed around the fire hydrant device 10, the finished condition of the equipment is appropriate and the appearance is not marred.

[0104] [e. Modifications of the present invention] In addition to the above-described embodiment, the fire hydrant device and the mount according to the present invention include the following modifications.

[0105] (Shapes other than inverted trapezoid) When the mounting stand in the above embodiment is installed on the road surface of the guard passage where it will be installed, it takes on the shape of an inverted trapezoid, with the top side longer than the bottom side, on the depth side so as to follow the curved shape of the tunnel wall. However, it is not limited to an inverted trapezoid, and it may be formed, for example, into an inverted triangle, or so that the tunnel wall side is arc-shaped to correspond to the curvature of the wall.

[0106] (If the tunnel wall has a cross section other than a circular cross section) In the above embodiment, the tunnel cross-sectional shape is circular, but if the tunnel cross-section is other than circular, such as a tricentric circle, the present invention can be applied by taking the horizontal line at the position where the horizontal width of the tunnel cross-sectional shape is widest as the tunnel center line SL1 in the above explanation.

[0107] (others) Furthermore, the present invention includes appropriate modifications that do not impair the objects and advantages thereof, and is not limited to the numerical values ​​shown in the above embodiments. [Explanation of symbols]

[0108] 10: Fire hydrant equipment 11a, 11b: Housing 12: Fire hydrant door 13a, 13b: decorative frame 14: Maintenance door 16: Fire extinguisher door 17: Peephole 18: Electric door 20: Red indicator light 22: Transmitter 24: Answer lamp 25: Telephone Jack 26: Tunnel wall 28: Stand 30: First stand 32,120: Second mount 34: Guard passage 36: Road 38: Wall support member 40: Duct 42: Water main 44: Branch pipe 46: Gate valve 48: Water supply piping 50a: Valve storage section 50b: Hose storage section 52: Fire extinguisher storage compartment 54: Water tap 56: Fire hydrant valve 58: Automatic pressure regulating valve 60: Fire hydrant valve opening / closing lever 62: Hose 64: Hose storage frame 65: Pump start switch 66: Hose guide 68: Nozzle 70: Nozzle holder 72a, 72b: Terminal box 74: Fire extinguisher 76, 76A, 76b: Mounting holes 122,148,172: Piping support part 124,174:Pipe passing hole 126, 128, 150, 152: Support case 130, 132, 154, 156: Rubber sheet 134:Through bolt 135 ,141 :Through hole 136,144: Nut 138: Mounting part 140: U-bolt 142:Fixed support plate 151,157: Rubber seal 158a: Hinge latch member 158b: Locking member 160: Pipe inlet hole 162: Piping outlet hole 170: Cable rack

Claims

1. A fire hydrant device that is installed inside a tunnel having a road and has a fire hose and a fire extinguisher stored in a housing, The housing is attached and fixed to a platform installed close to the wall of the tunnel in the guard passage of the tunnel, The frame is There is a storage space inside the exterior, a pipe support portion for passing a water supply pipe through the storage space and drawing it into the housing; Equipped with The piping support portion is Two support cases configured with openings facing each other; a rubber member disposed in the opening of the support case; Equipped with A fire hydrant device characterized in that the height of the casing is set so that the center line in the height direction of the casing approximately coincides with the horizontal line at the widest point in the horizontal width of the tunnel cross-sectional shape.

2. The fire hydrant device according to claim 1, The tunnel has a wall with a circular cross section, The height of the stand is set so that the horizontal center line of the circular cross section coincides with the center line of the height direction of the housing, or so that the distance between the two center lines is as close as possible.

3. The fire hydrant device according to claim 1, The fire hydrant device is characterized in that, when installed on the road surface at the installation location, the side surface in the depth direction has an inverted trapezoidal shape with the top side longer than the bottom side.

4. The fire hydrant device according to claim 1, A fire hydrant device characterized in that the width between the lower end of the back surface and the lower end of the front surface of the housing is a predetermined width corresponding to the outer diameter of the fire extinguisher.

5. The fire hydrant device according to claim 4, The housing has a predetermined storage volume capable of storing predetermined equipment including a fire hose and the fire extinguisher, and the height and width are set to fill the predetermined storage volume.

6. The fire hydrant device according to any one of claims 1 to 5, The fire hydrant device is characterized in that the housing is provided with a wall support member that attaches and supports the upper side to the wall surface of the tunnel.

7. The fire hydrant device according to claim 1, The fire hydrant device is characterized in that the pipe support portion is provided with an anti-freeze structure using a heat insulating material or a heat-insulating heater for the water supply pipe.

8. The fire hydrant device according to claim 1, The fire hydrant device is characterized in that the mounting base is provided with a cable rack in the storage space through which cables are passed and pulled into the housing.

9. A frame for attaching and fixing a fire hydrant device housing inside a tunnel having a road, There is a storage space inside the exterior, a pipe support portion for passing a water supply pipe through the storage space and drawing it into the housing; Equipped with The piping support portion is Two support cases configured with openings facing each other; a rubber member disposed in the opening of the support case; Equipped with A platform characterized by being installed close to the wall of the tunnel in the guard passage of the tunnel.

10. The mount according to claim 9, When the wall surface of the tunnel has a circular cross section, the height of the stand is set so that the center line of the height direction of the housing coincides with the horizontal center line of the circular cross section, or so that the distance between the two center lines is close to a predetermined dimension or less.

11. The mount according to claim 9, This mount is characterized in that when installed on the road surface at the installation location, the side surface in the depth direction has an inverted trapezoidal shape with the top side longer than the bottom side.

12. The mount according to claim 9, The piping support section is a frame characterized in that the water supply piping is provided with a freeze prevention structure using a heat insulating material or a heat insulating heater.

13. The mount according to claim 9, The stand is characterized in that the storage space is provided with a cable rack through which cables are passed and drawn into the housing.

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