Fire hydrant device installation structure

Abstract

To enable a water supply pipe and a wiring cable to be pulled from the outside and connected to a fire hydrant device installed at a predetermined height on a watchman's passage without enlarging an installation space or restricting access around the device.SOLUTION: A fire hydrant device 10 is installed close to or in contact with a tunnel wall surface 18 at a predetermined height above a road surface of a watchman's passage 20 provided along the tunnel wall surface 18 having a road. A pillar 12 used as a water supply pipe and a pillar 14 used as a conduit pipe fixed to a dust passage 22 formed on the road surface lower side of the watchman's passage 20 penetrate the watchman's passage 20 and support a trestle 15 at a predetermined height at the top end. The fire hydrant device 10 is placed on the trestle 15 and fixed. The pillar 12 used as a water supply pipe supports the trestle 15 and supplies fire-fighting water to the fire hydrant device 10. The pillar 14 used as a conduit pipe supports the trestle 15 and pulls a wiring cable 30 into the fire hydrant device 10.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an installation structure of a fire hydrant device installed so as to be exposed on a monitor passage provided along a tunnel wall surface.

Background Art

[0002] Conventionally, inside tunnels such as highways and motorways, fire hydrant devices are installed as tunnel emergency facilities. For example, the fire hydrant device includes a fire hose with a water discharge nozzle attached to the tip and valves including a fire hydrant valve stored in a fire hydrant storage section inside a housing having a forward-tilting fire hydrant door (forward-tilting door), and two fire extinguishers are stored in a fire extinguisher storage section inside a housing having a fire extinguisher door, and electrical equipment such as a red indicator light, a transmitter, a response lamp, and a telephone jack is also stored. Further, the fire hydrant device is generally installed by cutting out the tunnel wall surface provided with a monitor passage at intervals of, for example, 50 meters in the longitudinal direction of the tunnel and embedding it (Patent Document 1).

[0003] However, in a tunnel constructed by a shield method or the like, due to the structure of the tunnel body, it is difficult to cut out the tunnel wall surface and embed the fire hydrant device in terms of cost and labor, so it is required to install the fire hydrant device in a state of being exposed on the monitor passage.

[0004] For this reason, as a structure for installing the fire hydrant device in a state of being exposed on the monitor passage without cutting out the tunnel wall surface, a wall-mounted structure has been proposed in which a gantry is installed on the tunnel wall surface and the fire hydrant device is attached and fixed to the installed gantry. The gantry of the wall-mounted structure is composed of a main support portion fixed to the wall surface and a posture holding member for holding the posture of the fire hydrant device (Patent Document 2).

[0005] However, the installation of the fire hydrant device by the wall-mounted structure has problems such as taking man-hours and time for attaching the fire hydrant device to the tunnel wall surface. Therefore, it is considered to adopt a so-called standing structure in which a gantry is installed on the road surface of the monitor passage where installation is easy and the fire hydrant device is attached and fixed to the installed gantry.

[0006] By the way, in the conventional fire hydrant device shown in Patent Document 1, a water supply pipe is erected outside the side surface of the fire hydrant storage part inside the housing, where the fire hose and valves are stored. The water supply pipe is drawn into the housing through the side surface of the housing and connected to the pipe of the valve storage part. Also, regarding the wall-mounted structure and the freestanding structure of the fire hydrant device in Patent Document 2, it is assumed that a water supply pipe is erected outside the side surface of the fire hydrant storage part inside the housing, the water supply pipe is drawn into the housing through the side surface of the housing, and is connected to the pipe of the valve storage part. Furthermore, it is assumed that the wiring cable for electrical equipment such as the red indicator lamp and transmitter provided in the fire hydrant device is also drawn into the housing through the side surface of the housing and connected to the electrical equipment via the terminal box inside the housing.

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0008] However, in the structure where the water supply pipe erected outside the side surface of the housing of the conventional fire hydrant storage part is drawn into the housing through the side surface of the housing and connected to the pipe of the valve storage part, for example, in the wall-mounted structure and the freestanding structure of the fire hydrant device installed exposed on the road surface of the inspector passage, the water supply pipe is largely exposed outside the side surface of the fire hydrant device and becomes conspicuous. Compared with the point that the water supply pipe is not exposed in the conventional wall-embedded structure of the fire hydrant device, the appearance is significantly damaged and the look becomes bad. Also, there may be an impression that the function of the fire hydrant device may not be fully obtained in a non-normal state such as during construction.

[0009] In addition, the water supply pipe arranged to be exposed on the outer side of the side surface of the fire hydrant device results in an increase in the lateral width of the installation space. Due to the protrusion of the water supply pipe, access around the fire hydrant device is restricted, and it becomes an obstacle when the supervisor passage is used for inspection or evacuation.

[0010] Regarding the wiring cable that is drawn into the housing through the side surface of the fire hydrant device, the wiring cable is largely exposed on the outer side of the side surface of the fire hydrant device and becomes conspicuous, and there are similar problems.

[0011] An object of the present invention is to provide an installation structure of a fire hydrant device that can draw in and connect a water supply pipe and a wiring cable from the outside to a fire hydrant device installed at a predetermined height on a supervisor passage without expanding the installation space or restricting access around the device.

Means for Solving the Problem

[0012] (Installation Structure of Fire Hydrant Device) The present invention is an installation structure of a fire hydrant device installed close to or in contact with a tunnel wall at a predetermined height above the road surface of a supervisor passage provided along the wall surface of a tunnel having a road, a pair of columns that stand on a duct passage formed under the road surface of the supervisor passage, penetrate the supervisor passage, and have upper ends arranged at a predetermined height; a pedestal supported by the upper ends of the pair of columns, on which the fire hydrant device is placed and fixedly attached; and It is characterized by having a column structure that supplies fire extinguishing water to the fire hydrant device through the inside of one column and draws in a wiring cable to the fire hydrant device through the inside of the other column.

[0013] (Column Serving as Both Water Supply Pipe and Electric Wire Pipe) The pair of columns are steel pipes for piping, One of the steel pipes for piping is a column serving as both a water supply pipe for supplying fire extinguishing water to the fire hydrant device, The other steel pipe for piping is a column serving as an electric wire pipe for drawing in a wiring cable to the fire hydrant device.

[0014] (Support and stand fixing structure) The pair of pillars a support column body having openings with flanges at each of its upper end, lower end, and side end near the lower end, the support column body standing above the duct passage, passing through the observer passage, and having its upper end disposed at a predetermined height; a connecting support pole having an opening with a flange at each of its upper and lower ends and connected to the upper end side of the support pole body; a mount fixing plate for detachably fixing the mount; It consists of The gantry fixing plate is fixed so as to be sandwiched between the flange at the upper end opening of the support main body and the flange at the lower end opening of the connecting support.

[0015] (Structure that avoids the load on the support column that also serves as a water supply pipe) The water supply pipe support has a second connecting support that can be attached and detached. When installing the fire hydrant device, if the fire hydrant device is placed on the stand and fixed in place, the second connecting support is removed to avoid contact with the water supply piping on the fire hydrant device side, and after the fire hydrant device is fixed on the stand, the second connecting support is attached and connected and fixed to the water supply piping on the fire hydrant device side.

[0016] (First standing structure of the support column) The pair of support pillars are fixed upright to a concrete base installed above the duct passage, abutting the tunnel wall.

[0017] (Second standing structure of the support) The pair of support columns are fixed upright on a support column fixing frame made of angle steel installed on the tunnel wall side of the duct passage.

[0018] (Support steel pipe using shape-retaining hose) The pair of supports are steel pipes for plumbing or general-purpose steel pipes, One steel pipe is a support pillar that also serves as a water supply pipe, through which a shape-retaining hose is inserted to supply fire water to a fire hydrant device. The other steel pipe is a support pole that also serves as an electrical conduit for pulling wiring cables to the fire hydrant device.

[0019] (Inclination angle adjustment structure of the pedestal) When there is a road slope at the location where the fire hydrant device on the supervisor passage is installed, an inclination angle adjustment structure is provided to change the height of the upper end of the combined wire pipe and support column so that the pedestal is in a horizontal or nearly horizontal state or a finely adjusted state with respect to the road slope and fix the pedestal.

[0020] (Reinforcement structure of the support column) Outside a pair of support columns located between the road surface of the supervisor passage and the pedestal of the fire hydrant device, a reinforcing steel pipe divided in the axial direction is fixedly attached with a heat insulation layer sandwiched therebetween.

[0021] (Position relationship between the storage structure of the fire hydrant device and the support column) The fire hydrant device includes a first housing and a second housing that are connected and fixed in the lateral direction that is the advancing direction of the supervisor passage. The first housing arranges a valve storage part on one side surface side and arranges a fire hose storage part on the central side connected to the second housing. The second housing arranges an electrical equipment storage part on one side surface side and arranges a fire extinguisher storage part on the central side connected to the first housing. The upper end of the combined water supply pipe and support column is located below the valve storage part of the first housing, and the tip of the combined wire pipe and support column is located below the electrical equipment storage part of the second housing, so that the combined water supply pipe and support column and the combined wire pipe and support column are arranged in the lateral direction that is the advancing direction of the supervisor passage.

Effect of the invention

[0022] (Effect of the installation structure of the fire hydrant device) The present invention relates to an installation structure of a fire hydrant device installed adjacent to or in contact with a tunnel wall at a predetermined height above the road surface of a supervisor passage provided along the wall surface of a tunnel having a road, which stands on a duct passage formed below the road surface of the supervisor passage, penetrates the supervisor passage, and has a pair of columns with upper ends arranged at a predetermined height, and a pedestal supported by the upper ends of the pair of columns for mounting and fixing the fire hydrant device. Since it has a column structure for supplying fire extinguishing water to the fire hydrant device through the inside of one column and pulling in wiring cables to the fire hydrant device through the inside of the other column, fire extinguishing water is supplied to the fire hydrant device through the inside of one column installed at a predetermined height on the supervisor passage, so that the water supply path of the fire extinguishing water is concealed without being visible from the outside. Also, since the wiring cable is pulled into the fire hydrant device through the inside of the other column, the wiring cable is concealed without being visible from the outside, enabling the supply of fire extinguishing water and the pulling in of the wiring cable to the fire hydrant device installed at a predetermined height on the supervisor passage without expanding the installation space of the fire hydrant device.

[0023] In addition, the fire hydrant device has a simple and good-looking installation structure supported by two columns at a predetermined height on the supervisor passage. Since there is a large empty space between the lower side of the fire hydrant device supported by the columns and the road surface, the traffic restriction of the supervisor passage serving as an evacuation route is reduced, and when a road user uses the fire hydrant device, the access around the device is not restricted, improving the ease of use of the fire hydrant device.

[0024] (Effect of columns that double as water supply pipes and electric wire pipes) In addition, the pair of columns are steel pipes for piping. One steel pipe for piping is a column that doubles as a water supply pipe for supplying fire extinguishing water to the fire hydrant device, and the other steel pipe for piping is a column that doubles as an electric wire pipe for pulling in wiring cables to the fire hydrant device. By using a steel pipe for piping with a predetermined diameter required for supplying fire extinguishing water, for example, a steel pipe for piping with a diameter of about 10 mm as a column, sufficient support strength is ensured, and it is possible to securely support and fix a fire hydrant device having a weight of about 100 kg at a predetermined height on the supervisor passage.

[0025] (Effect of the fixing structure of the support column and the pedestal) Also, the pair of support columns include an opening having flanges at each of the upper end, the lower end, and the side end near the lower end, stand upright on the duct passage, penetrate through the supervisor passage, and have a support column body with the upper end disposed at a predetermined height, an upper end and a lower end each having an opening with a flange, and a connecting support column connected to the upper end side of the support column body, and a pedestal fixing plate for detachably fixing the pedestal. The pedestal fixing plate is fixed so as to be sandwiched between the flange of the upper end opening of the support column body and the flange of the lower end opening of the connecting support column. Therefore, for the installation work of the fire hydrant device, the pedestal is supported and fixed at a predetermined height on the supervisor passage by the pair of support columns, and then the fire hydrant device can be placed and fixedly attached to the pedestal. It is possible to efficiently perform the installation work of the fire hydrant device supported by the support columns.

[0026] (Effect of the structure for avoiding the load applied to the support column for both water supply and drainage pipes) Also, the support column for both water supply and drainage pipes includes a detachable second connecting support column following the connecting support column. When installing the fire hydrant device on the pedestal and fixedly attaching it, the second connecting support column is removed to avoid contact with the water supply pipe on the fire hydrant device side. After fixedly attaching the fire hydrant device to the pedestal, the second connecting support column is attached and connected and fixed to the water supply pipe on the fire hydrant device side. Therefore, when lowering and placing the fire hydrant device using a crane work vehicle on the pedestal supported at a predetermined height by the support columns, the load of the fire hydrant device is not directly applied to the support column for both water supply and drainage pipes, but is applied to the support columns on both sides through the pedestal, reducing the load applied to the support column for both water supply and drainage pipes and preventing damage and the like.

[0027] (Effect of the first standing structure of the support column) Also, since the pair of support columns are erected and fixed to a concrete base installed on the duct passage in contact with the tunnel wall surface, it is possible to support the fire hydrant device at a predetermined height without applying a load to the floor slab (road slab) constituting the road surface of the supervisor passage. It is possible to simply and surely install the heavy fire hydrant device at a predetermined height on the supervisor passage without the need to strengthen the floor slab structure of the supervisor passage.

[0028] (Effect of the second upright structure of the support column) In addition, since the pair of support columns are erected and fixed to a support column fixing base composed of angle steel installed on the tunnel wall surface side of the duct passage, in addition to the effects in the case of the concrete base described above, the structure is simple and lightweight because the support column fixing base is composed of angle steel, and it becomes possible to facilitate the installation work into the duct passage.

[0029] (Effect of the support column steel pipe using a shape-retaining hose) In addition, the pair of support columns are steel pipes for piping or general-purpose steel pipes. One steel pipe is a water supply pipe and support column for supplying fire extinguishing water to the fire hydrant device by inserting a shape-retaining hose, and the other steel pipe is an electric wire pipe and support column for drawing in wiring cables to the fire hydrant device. Therefore, by inserting a shape-retaining hose into the steel pipe to make it a water supply pipe and support column, in addition to a steel pipe for piping having a corrosion prevention structure such as zinc plating, it is possible to use a general-purpose steel pipe without a corrosion prevention structure, thereby reducing costs. Since it is only necessary to be able to insert the shape-retaining hose, it becomes easy to select a steel pipe with appropriate support strength. Also, as an electric wire pipe and support column, the same steel pipe can be used as the support column as it is, and the same effect as that of the water supply pipe and support column can be obtained.

[0030] (Effect of the tilt angle adjustment structure of the pedestal) In addition, when there is a road surface inclination corresponding to the road gradient at the location where the fire hydrant device on the monitor passage is installed, in order to make the pedestal in a horizontal or nearly horizontal state or a state finely adjusted with respect to the road surface inclination, there is a tilt angle adjustment structure for fixing the pedestal by changing the height of the upper end of the electric wire pipe and support column. Therefore, when installing a fire hydrant device on a monitor passage with a road surface inclination corresponding to the road gradient, it is possible to simply and easily attach and fix the fire hydrant device so that it is horizontal or inclined corresponding to the road surface inclination with respect to the fixing pedestal installed along the road surface inclination.

[0031] (Effect of the reinforcement structure of the support column) In addition, since a pair of axially split reinforcing steel pipes are fixedly attached with a heat insulation layer sandwiched therebetween outside a pair of columns located between the road surface of the inspector passage and the pedestal of the fire hydrant device, the support structure between the road surface of the inspector passage and the pedestal of the fire hydrant device becomes a dual pipe column structure, making it possible to enhance the support strength of the fire hydrant device. Also, when installed in a cold region, by arranging a heat insulation layer with a heat insulating material or a heat preservation heater between the columns and the reinforcing steel pipes, it becomes possible to easily provide a freeze prevention structure without expanding the installation space of the fire hydrant device or restricting access around the device. Although it is unnecessary to prevent freezing of the column also used as an electric wire pipe, in order to balance the support strength and not impair the appearance, a split reinforcing steel pipe is also fixedly attached outside the column also used as an electric wire pipe with a heat insulating material or a heat preservation material sandwiched therebetween.

[0032] (Effect of the positional relationship between the storage structure of the fire hydrant device and the columns) The fire hydrant device includes a first housing and a second housing that are connected and fixed in the lateral direction that is the advancing direction of the inspector passage. The first housing has a valve storage portion arranged on one side surface and a fire hose storage portion arranged on the central side connected to the second housing. The second housing has an electrical equipment storage portion arranged on one side surface and a fire extinguisher storage portion arranged on the central side connected to the first housing. The upper end of the water supply pipe also used as a column is located below the valve storage portion of the first housing, and the tip of the electric wire pipe also used as a column is located below the electrical equipment storage portion of the second housing. Since the water supply pipe also used as a column and the electric wire pipe also used as a column are arranged in the lateral direction that is the advancing direction of the inspector passage, the water supply pipe also used as a column is arranged on the valve storage portion side, and the electric wire pipe also used as a column is arranged on the electrical equipment storage portion side. This makes it possible to appropriately connect the water supply pipe with two columns supporting the fire hydrant device at a predetermined height on the inspector passage and draw in the wiring cable with the electric wire pipe. In particular, in the conventional fire hydrant device, the fire extinguisher storage portion is arranged on one side surface and the electrical equipment storage portion is arranged on the central side. However, in the present invention, by swapping the fire extinguisher storage portion and the electrical equipment storage portion, it is possible to arrange the electric wire pipe also used as a column for the electrical equipment storage portion.

Brief Description of the Drawings

[0033]

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Embodiment for Carrying out the Invention

[0034] Hereinafter, an embodiment of the installation structure of the fire hydrant device according to the present invention will be described with reference to the drawings. Note that the present invention is not limited by the following embodiments.

[0035] [Basic Concept of the Embodiment] First, the basic concept of the embodiment will be described. The embodiment generally relates to an installation structure of a fire hydrant device installed so as to be exposed in a monitor passage provided along a tunnel wall surface.

[0036] Here, the "fire hydrant device" is a kind of emergency equipment installed in a tunnel such as a highway or a motorway that is a fire target area, and is one in which fire hydrant equipment such as a fire hose, electrical equipment such as a red indicator light and a transmitter, a terminal box, and a fire extinguisher are installed or housed, and is a concept including the fire hydrant equipment in which the fire hydrant device is installed.

[0037] In addition, the fire hydrant device of the embodiment is installed at a predetermined height above the road surface of a monitor passage provided along the tunnel wall surface so as to be close to or in contact with the tunnel wall surface. Here, "installed close to or in contact with the tunnel wall surface" includes being installed close to the tunnel wall surface, installing a part in contact with the tunnel wall surface, or installing a part fixed to the tunnel wall surface.

[0038] Moreover, the fire hydrant device of the embodiment stands on a duct passage formed below the road surface of the inspector passage, penetrates the inspector passage, and includes a pair of columns with their upper ends arranged at a predetermined height, and a pedestal supported by the upper ends of the pair of columns for mounting and fixedly attaching the fire hydrant device. It is characterized by having a column structure that supplies fire extinguishing water to the fire hydrant device through the inside of one column and draws in a wiring cable to the fire hydrant device through the inside of the other column.

[0039] Here, the "column" is a columnar member that supports a pedestal for mounting and fixedly attaching the fire hydrant device at a predetermined height, and supports the pedestal by setting up the "pair of columns". Also, the column stands on a duct passage formed below the road surface of the inspector passage, and the load applied to the column by the fire hydrant device placed on the pedestal is received by the road surface of the duct passage below, rather than the road surface of the inspector passage. Therefore, since the inspector passage does not receive the load applied to the column, there is no need to strengthen the road surface structure of the inspector passage.

[0040] Also, the "pedestal" refers to a base for supporting objects, including concepts such as a support base, foundation base, base, pedestal, base, etc. The embodiment can be said to be a base supported at a predetermined height by a pair of columns for supporting the fire hydrant device.

[0041] Also, "one column" is a column structure that supplies fire extinguishing water to the fire hydrant device through the inside of the column. The "column structure for passing fire extinguishing water through the inside of the column" is optional. For example, the column is a steel pipe for piping, and the steel pipe for piping is arranged as the column. In the embodiment, it is called a "column for both water supply pipe and fire hydrant".

[0042] Also, "the other column" is a column structure that draws in a wiring cable to the fire hydrant device through the inside of the column. The "column structure for passing a wiring cable through the inside of the column" is optional. However, in order to balance the support strength of the pair of left and right columns, the same steel pipe for piping as the "column for both water supply pipe and fire hydrant" mentioned above is arranged as the column. In the embodiment, it is called a "column for both electric wire pipe and fire hydrant".

[0043] Here, the "steel pipe for piping" is a steel pipe equipped with a corrosion prevention structure such as rust prevention for water or the like passing through the pipe. The corrosion prevention structure is arbitrary, but for example, it is zinc-plated or the like. There is a "general-purpose steel pipe" used for purposes other than piping for the "steel pipe for piping". The "general-purpose steel pipe" has no corrosion prevention structure such as zinc plating, and accordingly, the cost is reduced.

[0044] According to the installation structure of the fire hydrant device of the embodiment, since the fire hydrant water is supplied to the fire hydrant device through the inside of "one pillar", for example, the "pillar for both water supply and piping" that installs the fire hydrant device at a predetermined height on the supervisor passage, the water supply path of the fire hydrant water is in a concealed state without being visible from the outside. Also, since the wiring cable is drawn into the fire hydrant device through the inside of "the other pillar", for example, the "pillar for both electric wire pipe", the wiring cable is in a concealed state without being visible from the outside. Therefore, it is possible to supply the fire hydrant water and draw in the wiring cable to the fire hydrant device installed at a predetermined height on the supervisor passage without expanding, for example, to the side of the fire hydrant device.

[0045] In addition, the fire hydrant device has a simple and good-looking installation structure supported by two pillars at a predetermined height on the supervisor passage. There is a wide empty space between the lower side of the fire hydrant device supported by the pillars and the road surface. The traffic restriction of the supervisor passage serving as an evacuation route is reduced, and when a road user uses the fire hydrant device, the access around the device is not restricted, and the usability of the fire hydrant device can be improved.

[0046] Also, as the "pair of pillars", for example, by using a steel pipe for piping with a predetermined dimension required for the water supply of the fire hydrant water, such as a steel pipe for piping with a nominal diameter of 80A (outer diameter 89.1 mm, wall thickness 8.4 mm) or a nominal diameter of 100A (outer diameter 114.3 mm, wall thickness 9.0 mm) as the pillar, sufficient support strength is ensured, and for example, it is possible to securely support and fix a fire hydrant device weighing about 100 kg at a predetermined height on the supervisor passage.

[0047] In addition, the "pair of columns" includes a column main body that has openings with flanges at each of the upper end, lower end, and side end near the lower end, stands on the duct passage, passes through the supervisor passage, and has its upper end disposed at a predetermined height, a connecting column that has openings with flanges at each of the upper end and lower end and is connected to the upper end side of the column main body, and a pedestal fixing plate that detachably fixes the pedestal. It has a structure in which the pedestal fixing plate is sandwiched and fixed between the flange of the upper end opening of the column main body and the flange of the lower end opening of the connecting column.

[0048] Here, the "structure for attaching and fixing the pedestal to the upper end of the column" is optional. However, in the embodiment, a structure is adopted in which a pedestal mounting plate is fixed between the flange of the upper end opening of the column main body standing on the duct passage and the flange of the lower end opening of the connecting column disposed above the column main body by fastening the flanges with bolts and nuts. Therefore, for the installation work of the fire hydrant device, the pedestal is supported and fixed at a predetermined height on the supervisor passage by a pair of columns, and then the fire hydrant device is placed on the pedestal and attached and fixed, so that the installation work of the fire hydrant device supported by the columns can be efficiently carried out.

[0049] In addition, the "one column" used as the "column for both water supply pipe" closes the lower end opening of the column main body when standing on the duct passage, connects a branch pipe from the main water supply pipe installed in the duct passage to the side end opening via a shut-off valve, and connects the upper end opening side of the column main body to the water supply pipe in the fire hydrant device, so that fire extinguishing water can be supplied to the fire hydrant device.

[0050] In addition, the "other column" used as the "column for both wire conduit" closes the lower end opening of the column main body when standing on the duct passage, draws in the wiring cable laid in the duct passage from the side end opening, leads it out from the upper end opening side into the fire hydrant device, and connects it to the electrical equipment.

[0051] In addition, the "water supply pipe-cum-support column" is provided with a detachable second connecting column following the connecting column. When installing and fixing the fire hydrant device on the gantry by placing the fire hydrant device on the gantry, the second connecting column is removed to avoid contact with the water supply pipe on the fire hydrant device side. After the fire hydrant device is installed and fixed on the gantry, the second connecting column is attached and connected and fixed to the water supply pipe on the fire hydrant device side.

[0052] Therefore, when lowering and placing the fire hydrant device on the gantry supported at a predetermined height by the column using a crane work vehicle, the load of the fire hydrant device may be applied impactfully. However, since the second connecting column is removed to avoid contact between the water supply pipe on the fire hydrant device side and the water supply pipe-cum-support column, the impact load when the fire hydrant device is placed on the gantry is not directly applied to the water supply pipe-cum-support column, but is applied to the columns on both sides via the gantry, reducing the load applied to the water supply pipe-cum-support column and preventing damage and the like.

[0053] In addition, the "pair of columns" is erected and fixed to a concrete base installed on the duct passage in contact with the tunnel wall surface. Therefore, even when the fire hydrant device is supported by the pair of columns, since the floor slab constituting the road surface of the inspector passage does not receive the load applied to the columns, it is not necessary to strengthen the road surface structure of the inspector passage, and it is possible to simply and surely arrange the heavy fire hydrant device at a predetermined height on the inspector passage.

[0054] In addition, the "pair of columns" may be erected and fixed to a column fixing gantry composed of angle steel installed on the tunnel wall surface side of the duct passage. Therefore, in addition to the effects in the case of the concrete base described above, since the column fixing base is composed of angle steel, the structure is simple and the weight is reduced, making it possible to facilitate the installation work into the duct passage.

[0055] Further, as the "pair of support columns", "general-purpose steel pipes" may be used. In this case, the "pair of support columns" are steel pipes (general-purpose steel pipes). One steel pipe serves as a water supply pipe-cum-support column that inserts a shape-retaining hose to supply fire extinguishing water to the fire hydrant device, and the other steel pipe serves as an electric wire pipe-cum-support column that draws in a wiring cable to the fire hydrant device.

[0056] Here, the "general-purpose steel pipe" does not have a corrosion prevention structure for water as described above. However, by passing a shape-retaining hose through the general-purpose steel pipe, the function as a "water supply pipe-cum-support column" is realized, the cost is reduced compared to the steel pipe for piping that requires a corrosion prevention structure, and it is easy to select a steel pipe with appropriate support strength. Also, as the "electric wire pipe-cum-support column", it is possible to use the "general-purpose steel pipe" as it is. Similar to the "water supply pipe-cum-support column" using the "general-purpose steel pipe", the cost is reduced, and it is easy to select a steel pipe with appropriate support strength. Note that the "general-purpose steel pipe" means a so-called black pipe known as a non-plated steel pipe. On the other hand, the "steel pipe for piping that requires a corrosion prevention structure" means a so-called white pipe known as a plated steel pipe.

[0057] Further, in the embodiment, when there is a road surface slope corresponding to the road slope at the location where the fire hydrant device on the supervisor passage is installed, the height of the upper end of the electric wire pipe-cum-support column is changed so that the gantry is in a horizontal or nearly horizontal state or a finely adjusted state with respect to the road surface slope, and it has an inclination angle adjustment structure for fixing the gantry.

[0058] Therefore, when installing a fire hydrant device on a supervisor passage with a road surface slope corresponding to the road slope, it is possible to simply and easily attach and fix the fire hydrant device so that it is horizontal or inclined corresponding to the road surface slope with respect to the fixed gantry installed along the road surface slope.

[0059] Further, in the embodiment, a reinforcing steel pipe axially split may be attached and fixed with a heat insulating layer sandwiched between the outside of both support columns located between the road surface of the supervisor passage and the gantry of the fire hydrant device.

[0060] Therefore, the structure of the pipe support column is such that the space between the road surface of the inspector passage and the pedestal of the fire hydrant device is doubled, which makes it possible to enhance the support strength of the fire hydrant device. Also, when installed in a cold region, by arranging a heat insulation layer such as a heat insulating material or a heat preservation heater between the support column and the reinforcing steel pipe, it becomes possible to easily provide a freeze prevention structure without expanding the installation space of the fire hydrant device or restricting access around the device. In this case, although it is unnecessary to prevent freezing of the support column for both electric wire pipe and water supply pipe, in order to balance the support strength and not impair the appearance, a structure may be adopted in which a split reinforcing steel pipe is also attached and fixed outside the support column for both electric wire pipe and water supply pipe with a heat insulating material or a heat insulating material sandwiched therebetween.

[0061] Also, the fire hydrant device includes a first housing and a second housing that are connected and fixed in the lateral direction that is the advancing direction of the inspector passage. In the first housing, a valve storage portion is arranged on one side surface, and a fire hose storage portion is arranged on the central side connected to the second housing. In the second housing, an electrical equipment storage portion is arranged on one side surface, and a fire extinguisher storage portion is arranged on the central side connected to the first housing. The upper end of the support column for both water supply pipe and water supply is located below the valve storage portion of the first housing, and the tip of the support column for both electric wire pipe and water supply is located below the electrical equipment storage portion of the second housing. The support column for both water supply pipe and water supply and the support column for both electric wire pipe and water supply are arranged in the lateral direction that is the advancing direction of the inspector passage.

[0062] Therefore, by arranging the valve storage portion where the support column for both water supply pipe and water supply is arranged and the electrical equipment storage portion where the support column for both electric wire pipe and water supply is arranged on one side surface of one side and the other side of the fire hydrant device, it becomes possible to appropriately supply the fire extinguishing water and draw in the wiring cable by a pair of support columns that support the fire hydrant device.

[0063] Hereinafter, specific embodiments will be described. In the specific embodiments shown below, one of the pair of support columns that support the fire hydrant device is referred to as a "support column for both water supply pipe and water supply", and the other is referred to as a "support column for both electric wire pipe and water supply". Also, the embodiments will be separately described according to whether "steel pipe for piping" or "general-purpose steel pipe" is used as the support column.

[0064] [Specific Contents of the Embodiment] An embodiment of the fire hydrant device will be described. The content will be described separately as follows. a. Installation structure of the fire hydrant device a1. Outline of the installation structure of the fire hydrant device a2. Installation height and thinning of the fire hydrant device a3. Outline of the fire hydrant device a4. Internal structure of the fire hydrant device a5. Mounting structure of the pedestal of the support column a6. Structure for avoiding the load applied to the water supply pipe and support column b. Installation work of the fire hydrant device c. Support column support structure using angle steel d. Installation structure of the fire hydrant device with a shape-retaining hose passed through the water supply pipe and support column e. Installation structure of the fire hydrant device with an angle adjustment structure f. Installation structure of the fire hydrant device with a reinforcing pipe g. Modification example of the present invention

[0065] [a. Installation structure of the fire hydrant device] First, the installation structure of the fire hydrant device will be described. In this description, refer to FIG. 1 showing an embodiment of the installation structure of the fire hydrant device installed on the road surface of the monitor passage as viewed from the front in the installation state in the tunnel, and FIG. 2 showing the installation structure of the fire hydrant device of FIG. 1 as viewed from the left side. Note that FIG. 2 shows a cross-section taken along the cut line a-a of FIG. 1.

[0066] Here, in the description of FIGS. 1 and 2, the X-Y-Z directions are perpendicular to each other. Specifically, when looking at the front of the fire hydrant device 10 as 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-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 upper side, the -Y side is the lower side, the +Z side in the Z direction is the front side, and the -Z side is the rear side. This is the same in FIGS. 3 to 17 which are embodiments of the present invention.

[0067] (a1. Outline of the installation structure of the fire hydrant device) As shown in FIGS. 1 and 2, the lower part of the cylindrical (circular cross-section) tunnel body constructed by the shield method is partitioned by a floor slab 24, a road 32 is constructed on the floor slab 24 in the tunnel longitudinal direction (the left-right direction in FIG. 1), and a supervisor passage 20 at a predetermined height with respect to the road 32 is constructed on the lower side of the tunnel wall surface 18 along the road 32. The lower part of the supervisor passage 20 is a duct passage 22, and a main water supply pipe 25 and wiring cables 30 are laid inside.

[0068] As shown in FIG. 1, the fire hydrant device 10 is installed on a pedestal 15 supported at a predetermined height on the road surface of the supervisor passage 20 by a water supply pipe and support column 12 and an electric wire pipe and support column 14 provided as a pair of support columns.

[0069] Since valve components including a fire hydrant valve are stored on the right end side of the housing of the fire hydrant device 10, the water supply pipe and support column 12 stands on the right end side of the fire hydrant device 10. Further, since electrical equipment including a transmitter is stored on the left end side of the housing of the fire hydrant device 10, the electric wire pipe and support column 14 stands on the left end side of the fire hydrant device 10.

[0070] The water supply pipe and support column 12 and the electric wire pipe and support column 14 are fixed in a standing state on a concrete base 16 installed on the road surface of the duct passage 22 constructed below the supervisor passage 20. The road surface of the duct passage 22 is composed of a floor slab 24 that partitions the laying position of the road 32 in the tunnel, and sufficient strength to withstand the load of passing vehicles is ensured.

[0071] As shown in FIG. 2 showing the cross-section taken along the cutting line a-a in FIG. 1, since the fire hydrant device 10 is installed close to the tunnel wall surface 18, the concrete base 16 is shaped such that the tip of the water supply pipe and support column 12 is located near the center in the depth direction of the fire hydrant device 10, and is arranged at the corner part from the road surface of the floor slab 24 to the rising surface of the tunnel wall surface 18, and is installed and fixed at the corner part by driving anchor bolts or the like. A plurality of bolts stand in an embedded state on the rising surface at the upper end of the concrete base 16 to fix the flange on the support column side.

[0072] In addition, the water supply pipe-cum-support column 12 that is vertically fixed to the concrete base 16 rises upward through the supervisor passage 20. All the loads received when the fire hydrant device 10 is installed are borne by the concrete base 16, and the structure is such that no load is applied to the supervisor passage 20. Therefore, there is no need for a structure to strengthen the road surface of the supervisor passage 20. These points also apply to the concrete base 16 that vertically fixes the electric wire pipe-cum-support column 14.

[0073] The water supply pipe-cum-support column 12 uses a steel pipe for pipes with an anti-corrosion structure for the water passing through the pipe, for example, a galvanized steel pipe. It has flanged openings at each of the lower end, upper end, and the side end near the lower end. The lower end opening of the water supply pipe-cum-support column 12 is closed by sandwiching a fixing plate through a packing when the flange is inserted into the bolt of the concrete base 16 and fastened with a nut.

[0074] In addition, a branch pipe 26 branched from the main water supply pipe 25 laid in the duct passage 22 is connected to the side end opening of the water supply pipe-cum-support column 12 via a shut-off valve 28. When the shut-off valve 28 is opened, the fire extinguishing water can be supplied to the fire hydrant device 10 through the inside of the water supply pipe-cum-support column 12.

[0075] The electric wire pipe-cum-support column 14 uses the same steel pipe for pipes as the water supply pipe-cum-support column 12 to ensure the same strength. Similarly, it has flanged openings at each of the lower end, upper end, and the side end near the lower end. The lower end opening of the electric wire pipe-cum-support column 14 is closed by sandwiching a fixing plate when the flange is inserted into the bolt of the concrete base 16 and fastened with a nut. Also, a drain hole is provided at the lower end of the electric wire pipe-cum-support column 14.

[0076] In addition, the wiring cable 30 wired in the duct passage 22 is drawn into the side end opening of the electric wire pipe-cum-support column 14, passes through the inside, and is drawn out from the upper end opening into the fire hydrant device 10, thereby being connected to the corresponding electrical equipment.

[0077] The fire hydrant device 10 is mounted and fixed to a platform 15, which is supported at a predetermined height above the guard passage 20 by a support pole 12 that also serves as a water supply pipe and a support pole 14 that also serves as an electrical conduit. The top of the fire hydrant device 10 is fixed to the tunnel wall surface 18 by a support member 17 to prevent it from falling forward.

[0078] (a2. Installation height and thinness of fire hydrant equipment) Next, we will explain the installation height and thinning of the fire hydrant device. As shown in Figure 1, when the water supply pipe / support pole 12 and the electrical conduit / support pole 14 are supported above the monitor's walkway 20, the height of the fire hydrant device 10 is set so that the height of all operation targets, including the transmitter and water discharge nozzle, installed on the fire hydrant device 10 falls within the legally defined appropriate operation range. When the road surface of the monitor's walkway 20 is a standing surface for road users, as is well known, the legally defined appropriate operation range is, as shown in Figure 2, a lower limit height H1 from the road surface of 800 mm and an upper limit height H2 of 1500 mm, with the height width Hw of the appropriate operation range being 700 mm.

[0079] In this embodiment, the height from the road surface of the monitor passage 20 to the top surface of the stand 15 (height to the bottom surface of the fire hydrant device) is set so that all of the operation objects arranged in the fire hydrant device 10 are within the appropriate operation range. This height can be any as long as all of the operation objects are within the appropriate operation range, but by setting it to, for example, 800 mm, the same as the lower limit height H1 of the appropriate operation range, all of the operation objects arranged in the fire hydrant device 10 will be located at a position above the lower limit height no matter where they are located.

[0080] Next, we will explain how to make the fire hydrant device as thin as possible. As shown in Figure 2, in order to reduce the restriction on the passage width of the monitor passage 20 caused by the protrusion (projection) of the fire hydrant device 10 installed on the road surface of the monitor passage 20 from the tunnel wall surface 18, the fire hydrant device 10 is made as thin as possible.

[0081] The thinning of the fire hydrant device 10 will be optimized according to the equipment housed inside the fire hydrant device 10. In the embodiment, among the equipment housed inside the fire hydrant device 10, the equipment with the largest size in the front-rear direction is the fire extinguisher housed in the fire extinguisher storage section. Since the depth width (thickness in the front-rear direction) of the fire hydrant device 10 can be thinned down to a size that can accommodate the fire extinguisher, the depth width of the fire hydrant device 10 is set to a predetermined depth width corresponding to the outer diameter of the fire extinguisher to be housed.

[0082] The fire extinguisher housed in the fire hydrant device 10 is, for example, a 20-type fire extinguisher with a chemical agent amount of 6 kg and a total weight of about 10 kg. Since the outer diameter of the 20-type fire extinguisher is about 160 - 180 mm, when a gap is secured so that the housed fire extinguisher does not contact the housing, the minimum depth width of the fire hydrant device 10 is set to a predetermined width within the range of, for example, about 200 mm - 250 mm, for example, 250 mm or less. On the other hand, since the depth width of the conventional fire hydrant device that is installed by cutting out the wall surface of the tunnel structure and embedding it is 300 mm or more, the depth width of the fire hydrant device 10 in the embodiment is reduced compared to the conventional fire hydrant device, and the fire hydrant device 10 can be thinned down.

[0083] (a3. Overview of the fire hydrant device) Subsequently, the overview of the fire hydrant device will be described. For this description, refer to FIG. 3 which shows the fire hydrant device in FIG. 1 taken out and shown from the front.

[0084] As shown in FIG. 3, the fire hydrant device 10 has a first housing 34a and a second housing 34b connected and fixed in the left-right direction. A decorative frame 35a is attached to the front surface of the first housing 34a. A door opening is formed on the front surface of the decorative frame 35a. Below the door opening, a fire hydrant door 36 that opens downward with the lower end as the axis by the hinge 36a is arranged when the lock is released by the operation of the door opening / closing handle 3610.

[0085] Also, above the door opening formed in the decorative frame 35a, a maintenance door 38 that opens upward with the upper end as the axis by the hinge 38a is arranged. The maintenance door 38 that opens upward is held in the open state by a stay (support rod) arranged inside the door.

[0086] Inside the first housing 34a, fire-fighting equipment including a water discharge nozzle connected to a fire-fighting hose, an opening / closing operation lever of a fire hydrant valve, a water supply faucet, a pump starting device, etc. is stored as will be described later.

[0087] A decorative frame 35b is attached to the front surface of the second housing 34b. At the door opening on the right side of the decorative frame 35b, when the lock is released by operating the door opening / closing handle 4010, a fire extinguisher door 40 that opens horizontally to the left by a hinge 40a is arranged. In the fire extinguisher storage part inside the door, for example, two fire extinguishers 42 are stored. Further, a viewing window 4012 is provided in the fire extinguisher door 40, and the presence or absence of the fire extinguisher 42 can be confirmed from the outside.

[0088] Also, at the left door opening formed in the decorative frame 35b of the second housing 34b, an electrical equipment door 44 that opens horizontally to the right by a hinge 44a is arranged. On the left side thereof, an auxiliary door 46 that opens horizontally to the left by a hinge 46a and enables access to the internal terminal boxes 56a, 56b is arranged.

[0089] In the embodiment, since the auxiliary door 46 is arranged and the electrical equipment storage part is enlarged compared with the conventional case, the terminal boxes 56a, 56b that were conventionally arranged on the inner rear surface of the fire extinguisher storage part can be arranged on the inner rear surface of the auxiliary door 46.

[0090] On the electrical equipment door 44, as electrical equipment, for example, a red indicator lamp 48, a transmitter 50, and a response lamp 52 are arranged, and a telephone jack 54 is arranged on the inner side of the door. The red indicator lamp 48 is always lit so that the installation location of the fire hydrant device 10 can be confirmed from a distance. Further, when the transmitter 50 is pushed, for example, when a fire or the like occurs and the switch is turned on, a transmission signal is transmitted, and a fire alarm is output from a disaster prevention receiving board installed in an electrical room or the like that receives this. The fire hydrant device 10 that receives the response signal from the disaster prevention receiving board lights up the response lamp 52.

[0091] Also, when the fire hydrant valve is opened by operating the fire hydrant valve opening / closing lever, a pump start signal is transmitted to the disaster prevention receiving panel. The disaster prevention receiving panel controls the start of the fire pump equipment and simultaneously blinks the red indicator lights 48 provided in all the fire hydrant devices 10 to notify the occurrence of a fire.

[0092] On the rear surface inside the second housing 34b opposite to the auxiliary door 46, a high-voltage terminal box 56a and a low-voltage terminal box 56b are arranged side by side, for example, in the vertical direction. The high-voltage terminal box 56a uses the built-in terminal block to connect the high-voltage cable drawn into the fire hydrant device 10 through the electric wire pipe and support column 14 and the red indicator light 48. The low-voltage terminal box 56b uses the built-in terminal block to connect the low-voltage cable drawn into the fire hydrant device 10 through the electric wire pipe and support column 14, the transmitter 50, the response lamp 52, and the telephone jack 54.

[0093] Here, in the conventional fire hydrant device, a fire extinguisher storage part with a fire extinguisher door 40 is provided on the left side of the second housing 34b, and an electrical equipment storage part with an electrical equipment door 44 and an auxiliary door 46 is provided on the right side. However, in this embodiment, the fire extinguisher storage part and the electrical equipment storage part are swapped, and the electrical equipment storage part is set on the left side of the second housing 34b, so that the electrical equipment storage part is located at a position corresponding to the tip opening of the electric wire pipe and support column 14.

[0094] (a4. Internal structure of the fire hydrant device) Next, the internal structure of the fire hydrant device will be described. For this description, refer to FIG. 4 which shows the internal structure of the fire hydrant storage part in the fire hydrant device of FIG. 1 with the front of the housing opened and viewed from the front. First, the internal structure of the first housing 34a will be described. Inside the first housing 34a, a valve storage part 58 and a hose storage part 60 are provided.

[0095] First, regarding the valve storage section 58, as shown in FIG. 4, a pedestal 15 is attached and fixed to the upper end of the water supply pipe-cum-column 12. Following the upper end opening of the water supply pipe-cum-column 12, a branch pipe 66 is connected via a connecting column 100 and a second connecting column 102 made of steel pipes for piping. Following the branch pipe 66, a water supply pipe 70 and a hydrant 68 used by the fire department are connected.

[0096] The branch pipe 66 branches horizontally (to the left) and then the water supply pipe 70 is connected upward. The water supply pipe 70 is provided with a fire hydrant valve 72 and an automatic pressure regulating valve 74 from the left side. The fire hydrant valve 72 is provided with an interlocking box 90, and a wire is connected between the fire hydrant valve opening / closing lever 86 of the operation box 88 arranged at the front of the hose storage section 60, and the rotation accompanying the opening / closing operation of the fire hydrant valve opening / closing lever 86 of the operation box 88 is transmitted to the interlocking box 90 via the wire to open / close the fire hydrant valve 72, constituting a known wire link mechanism.

[0097] The automatic pressure regulating valve 74 adjusts the pressure of the fire fighting water supplied to the fire fighting hose 80 so as to maintain a predetermined pressure. A inspection joint may be provided on the secondary side of the automatic pressure regulating valve 74 and used for performing an actual water discharge test by attaching a water discharge test jig. The water supply pipe 70 from the automatic pressure regulating valve 74 goes downward on the left end side of the first housing 34a, and is connected to the root side of the fire fighting hose 80 stored in the hose storage section 60.

[0098] Next, the hose storage section 60 will be described. In the hose storage section 60 partitioned in a box shape on the lower left side of the first housing 34a, predetermined fire hydrant equipment including a water discharge nozzle 82, an operation box 88, a fire hydrant valve opening / closing lever 86, a pump starting device 92, and a pump starting interlocking device 94 is stored.

[0099] A lattice-shaped frame 76 is arranged on the front side of the hose storage part 60. A fire hose 30, whose root is connected to the water supply pipe 70 on the secondary side of the automatic pressure regulating valve 74, is stored by counterclockwise inner winding. A water discharge nozzle 82 is connected to the tip of the fire hose 80 pulled out from the hose outlet 78, and the water discharge nozzle 82 is detachably held by a nozzle holder 84 attached to the frame 76.

[0100] Also, on the right side of the frame 76, an operation box 88 equipped with a fire hydrant valve opening and closing lever 86 for remotely operating the fire hydrant valve 72 is arranged. Inside the operation box 88, a pump start interlocking device 94 is provided. When the fire hydrant valve opening and closing lever 86 is operated to the open position, a pump start signal is transmitted to the disaster prevention receiving panel, and the start control of the fire pump facility is performed. In addition, near the water tap 68, a pump start device 92 used by the fire brigade is arranged. When the push button is operated, a pump start signal is transmitted to the disaster prevention receiving panel, and the start control of the fire pump facility is performed. Note that the switch contacts of the pump start device 92 and the pump start interlocking device 94 are connected in parallel.

[0101] (a5. Mounting structure of the support column base) Next, the mounting structure of the support column base will be described. For this description, refer to FIG. 5 showing the water supply pipe and support column for supporting the fire hydrant device in FIG. 1 taken out, and FIG. 6 showing the base on which the fire hydrant device in FIG. 1 is placed taken out. Note that FIG. 5(A) shows the water supply pipe and support column taken out, FIG. 5(B) shows the assembled and disassembled state of the water supply pipe and support column, FIG. 5(C) shows the plane of the water supply pipe and support column, and FIG. 5(D) shows the cross section of the cutting line b-b in FIG. 5(A). Also, FIG. 6(A) shows the plane of the base, and FIG. 6(B) shows the bottom surface of the base.

[0102] As shown in Fig. 5(A), the water supply pipe-cum-support column 12 is composed of a support column main body 1210 and a connecting support column 100. As described above, a steel pipe for piping is used for the support column main body 1210. As shown in Fig. 5(B), an upper end opening 1220 equipped with a flange 96a is formed at the upper end of the support column main body 1210, a lower end opening 1222 equipped with a flange 96b is formed at the lower end of the main body support column 1210, and a side end opening 1224 equipped with a flange 96c is formed on the lower side of the side of the support column main body 1210. Also, although the size of the steel pipe for piping used for the support column main body 1210 is arbitrary, when a water supply faucet 68 is provided in the housing 34a as shown in Fig. 4, for example, a galvanized steel pipe for piping (silocan) with a nominal diameter of 80A (outer diameter 89.1 mm, wall thickness 8.4 mm) or a nominal diameter of 100A (outer diameter 114.3 mm, wall thickness 9.0 mm) is used. In addition, when the water supply faucet 68 is not provided in the housing 34a, for example, a galvanized steel pipe for piping (silocan) with a nominal diameter of 65A (outer diameter 76.3 mm, wall thickness 4.2 mm) is used.

[0103] As shown in Fig. 5(D), the flange 96b of the lower end opening 1222 is in the shape of a rectangular plate, and through holes for passing bolts standing on the concrete base 16 shown in Fig. 2 are formed at four corners. Also, for the connecting support column 100, a steel pipe for piping with the same nominal diameter as the support column main body 1210 is used, and flanges 100a and 100b are provided at each of the upper end opening and the lower end opening.

[0104] As shown in Figs. 5(A) and (B), a gantry fixing plate 98 is fixed to the upper end of the support column main body 1210 by the connecting support column 100. As shown in Fig. 5(C), the gantry fixing plate 98 is a rectangular plate arranged inside the corner part of a gantry 15 formed of angle steel. Through holes for communicating the internal passages of the support column main body 1210 and the connecting support column 100 arranged vertically are formed in the center, through holes for passing bolts for fixing the flanges 96a and 100b are formed, and further, through holes for bolt-fixing to the gantry 15 are formed at four corners.

[0105] Therefore, as shown in Fig. 5(B), with the mounting plate fixing member 98 disposed between the upper end of the column main body 1210 and the connecting column 100, the bolts 101 are passed through the upper and lower flanges 100b and 96a and tightened with nuts 103, so that, as shown in Fig. 5(A), it is fixedly attached. Note that since the water supply pipe and conduit combined column 14 is the same as the embodiment of the water supply pipe combined column 12, the description thereof is omitted.

[0106] As shown in Fig. 6(A), the mounting base 15 is formed of an L-shaped cross-section angle steel material to form a rectangular frame having a depth width D1 that abuts against the tunnel wall surface with a width L corresponding to the bottom width of the fire hydrant device 10, and a rectangular frame having a depth width D2 corresponding to the depth width of the fire hydrant device 10, for example, 250 mm, is integrally formed. In the rectangular frame having the depth width D2, four through holes 15a for attaching and fixing the mounting plate fixing member 98 shown in Fig. 5 with bolts and nuts are formed on both sides separately. Further, a plurality of through holes 15b for attaching and fixing the fire hydrant device 10 to the mounting base 15 with bolts and nuts are formed at a plurality of positions in the rectangular frame having the depth width D2.

[0107] As shown in Fig. 6(B), the mounting base 15 is attached and fixed to the upper ends of the water supply pipe combined column 12 and the water supply pipe and conduit combined column 14 by placing the mounting base 15 on the mounting plate fixing member 98 fixed to the upper end side of each of the water supply pipe combined column 12 and the water supply pipe and conduit combined column 14, and passing bolts through the through holes 15a and tightening and fixing them with nuts.

[0108] (a6. Structure for avoiding load applied to water supply pipe combined column) Subsequently, a structure for avoiding the load applied to the water supply pipe combined column will be described. In this description, when placing the fire hydrant device on the mounting base, refer to Fig. 7 which shows the structure of the upper end of the column that does not apply a load to the water supply pipe combined column with the front of the housing open and shown from the front.

[0109] As shown in Fig. 7, for the operation of placing and fixedly installing the fire hydrant device 10 on the gantry 15 supported at the upper ends of the water supply pipe-cum-support column 12 and the electric wire pipe-cum-support column 14, first, the second connecting column 102 disposed between the connecting column 100 arranged at the upper end of the water supply pipe-cum-support column 12 and the branch pipe 66 arranged in the valve storage section 58 is removed.

[0110] For the installation work of the fire hydrant device 10 on the gantry 15 supported by the water supply pipe-cum-support column 12 and the electric wire pipe-cum-support column 14 at a predetermined height on the monitor passage 20 in the tunnel, it is an operation of suspending the fire hydrant device 10 by a crane truck and placing it on the gantry 15. It is assumed that when lifting and lowering by the crane truck, the load of the fire hydrant device 10 is applied to the gantry 15 impactfully.

[0111] At this time, if the second connecting column 102 is connected to the water supply pipe-cum-support column 12 side, due to the abutment of the branch pipe 66 against the second connecting column 102, the load of the fire hydrant device 10 is applied to the water supply pipe-cum-support column 12 side impactfully, and there is a risk of damage to the water supply pipe-cum-support column 12 side.

[0112] Therefore, as shown in Fig. 7, for the installation work of the fire hydrant device 10, with the second connecting joint 102 removed, the fire hydrant device 10 is lifted and lowered on the gantry 15 by a crane truck so that the load of the fire hydrant device 10 is not directly applied to the water supply pipe-cum-support column 12 side, thereby preventing damage to the water supply pipe-cum-support column 12 side. After placing and fixedly installing the fire hydrant device 10 on the gantry 15, the removed second connecting column 102 is inserted between the connecting column 100 and the branch pipe 66 and fixedly installed.

[0113] [b. Installation work of the fire hydrant device] Subsequently, the installation work of the fire hydrant device will be described. In this description, refer to Fig. 8 showing the construction procedure for installing the fire hydrant device in Fig. 1, and Fig. 9 showing the subsequent construction procedure to Fig. 8. Note that Fig. 8 and Fig. 9 show the installation work of the fire hydrant device with respect to the support on the water supply pipe-cum-support column side, and the same applies to the electric wire pipe-cum-support column side.

[0114] The construction procedure of the fire hydrant device is as follows. First, as shown in Fig. 8(A), a tunnel body with a cylindrical tunnel wall surface 18 is constructed by the shield method. With the floor slab 24 for partitioning the inside of the tunnel constructed to provide a road, at the corner between the floor slab 24 on which the supervisor passage is to be constructed and the tunnel wall surface 18, concrete pedestals 18 are arranged at two locations at intervals corresponding to the width of the fire hydrant device and fixed by anchor bolts or the like.

[0115] Subsequently, as shown in Fig. 8(B), on the concrete pedestal 16, the water supply pipe and support column 12 having the structure shown in Fig. 5 is erected and the lower end side is attached and fixed, and a gantry fixing plate 98 is supported on the upper end side.

[0116] Subsequently, as shown in Fig. 8(C), on the road surface of the floor slab 24 corresponding to the depth width of the supervisor passage, a passage retaining wall 104 is installed along the tunnel wall surface 18. The passage retaining wall 104 is a precast concrete member integrally formed with the side wall 1040 on the road side of the supervisor passage and the drainage ditch 1042, and the lateral length is arbitrary, but for example, it is about several meters in length. In addition, the construction of the water supply pipe and support column 12 shown in Fig. 8(C) and the construction of the passage retaining wall 104 shown in Fig. 8(D) can be interchanged in order as necessary.

[0117] Subsequently, as shown in Fig. 9(D), a main water supply pipe 24 is laid on the road surface of the duct passage 22 between the passage retaining wall 104 and the tunnel wall surface 18, and construction is carried out to connect a branch pipe 26 to the side end opening of the water supply pipe and support column 12 via a shut-off valve 28. Also, as shown in Fig. 1, for the wire pipe and support column 14 standing on the concrete pedestal 16 adjacent to the water supply pipe and support column 12, a wiring cable 30 is laid along the duct passage 22 partitioned by the passage retaining wall 104, and the wiring cable 30 is passed through the wire pipe and support column 14 and drawn out from the upper end so as to be connectable to the electrical equipment.

[0118] Subsequently, as shown in Fig. 9(E), a concrete road slab 2010 is arranged between the upper part of the passage retaining wall 104 and the tunnel wall surface 18 to construct the road surface of the supervisor passage 20. Here, the size of the road slab 2010 is arbitrary. For example, the thickness is about 100 mm and the width is 2500 mm (2.5 m). Since the fire hydrant devices 10 are installed at intervals of 50 m along the tunnel wall surface 18, when the road slab 2010 is arranged according to the installation location of the fire hydrant devices 10, the interval between adjacent fire hydrant devices is 47.5 m, and 19 road slabs 2010 with a width of 2.5 m are arranged up to the adjacent fire hydrant devices.

[0119] In addition, the road slab 2010 arranged at the installation location of the fire hydrant device 10 has a structure in which the depth is notched in a rectangular shape so as to pass through the parts corresponding to the water supply pipe and support column 12 and the wire pipe and support column 14. After installation, the gap can be closed by filling the gap between the water supply pipe and support column 12, the wire pipe and support column 14, and the notch with concrete.

[0120] Subsequently, after the supervisor passage 20 is constructed by arranging the road slab 2010, a gantry 15 is attached and fixed to the upper ends of the water supply pipe and support column 12 and the wire pipe and support column 14 standing upright through the road slab 2010, as shown in Fig. 5. Note that at any stage when the passage retaining wall 104 is installed, a road 32 paved on the floor slab 24 is constructed.

[0121] Subsequently, as shown in Fig. 9(F), the fire hydrant device 10 is lifted and arranged by a crane truck with respect to the gantry 15 supported by the water supply pipe and support column 12 and the wire pipe and support column 14 at a predetermined height on the supervisor passage 20, and is attached and fixed on the gantry 15. When the fire hydrant device 10 is lifted and arranged by a crane vehicle, as shown in Fig. 7, by removing the second connecting column 102, it is possible to prevent the load of the fire hydrant device 10 from being applied to the water supply pipe and support column 12 in an impact manner.

[0122] Note that the construction procedures of the fire hydrant devices shown in Figs. 8 and 9 are examples, and the construction procedures, the structure of the precast passage retaining wall 104 and the road slab 2010, etc. can be appropriately changed as required.

[0123] [c. Support Structure for Columns Using Angle Steel] Next, the support structure for columns using angle steel will be described. In this description, refer to FIG. 10 showing the support structure for columns using angle steel from the front in the installation state in the tunnel, and FIG. 11 showing the installation structure of the fire hydrant device in FIG. 10 from the left side. Note that FIG. 11 shows the cross-section along the c-c cutting line in FIG. 10.

[0124] As shown in FIGS. 10 and 11, in the duct passage 22 below the supervisor passage 20, a support fixing base 106 for columns using angle steel is installed on a portion of the tunnel wall surface 18 rising from the floor slab 24 in order to erect and fix a water supply pipe and column 12 for supporting and fixing the fire hydrant device 10 at a predetermined height through the supervisor passage 20 and an electric wire pipe and column 14.

[0125] The structure of the support fixing base 106 is arbitrary. For example, as shown in FIG. 11, it is a structure in which a triangular prism having a right triangle side end shape connecting an inclined member along the tunnel wall surface 18, a vertical member on the front surface, and a horizontal member in the depth direction is arranged horizontally, and an auxiliary member 106a made of angle steel is arranged on a portion of the triangular prism that is the portion for fixing the flange at the lower end of the column in a right triangle. Note that since the structures other than those using the support fixing base 106 are the same as those in the embodiments of FIGS. 1 and 2, the description thereof is omitted.

[0126] In this way, since the water supply pipe and column 12 and the electric wire pipe and column 14 are erected and fixed to the support fixing base 106 made of angle steel, compared with the concrete base 16 described above, the support fixing base 106 is made of angle steel, so the structure is simple and the weight is reduced, and the installation work into the duct passage 22 is also facilitated.

[0127] [d. Installation Structure of Fire Hydrant Device with a Shaping Hose Passed through a Water Supply Pipe and Column] Next, the installation structure of the fire hydrant device with a shape-retaining hose passed through the water supply pipe-cum-support column will be described. In this description, refer to Fig. 12 which shows the installation structure of the fire hydrant device with a shape-retaining hose passed through the water supply pipe-cum-support column as viewed from the left side in the installation state within the tunnel.

[0128] As shown in Fig. 12, the water supply pipe-cum-support column 12 of the present embodiment is composed of a column main body 1210 and a connecting column 100, and is fixed in an upright state on a concrete base 16 installed on the road surface of the duct passage 22. Also, a gantry fixing plate 98 is attached and fixed between the column main body 1210 and the connecting column 100 in the same configuration as shown in Fig. 5.

[0129] The column main body 1210 is provided with flanged openings at the upper and lower ends, but at the lower side end, instead of a flanged opening, a through hole 108 for passing a hose is formed on the side surface of the column main body 1210.

[0130] Inside the column main body 1210 and the connecting column 100 that constitute the water supply pipe-cum-support column 12, a shape-retaining hose 110 is inserted. The lower end of the shape-retaining hose 110 is drawn out from the through hole 108 and is connected to the secondary side of a shut-off valve 28 connected to the water supply main pipe 25 by a branch pipe 26. The upper end of the shape-retaining hose 110 is connected to the lower end of a branch pipe 66 within the fire hydrant device 10, and the shape-retaining hose 110 inserted through the water supply pipe-cum-support column 12 supplies fire extinguishing water to the fire hydrant device 10.

[0131] The shape-retaining hose 110 is the same as the fire extinguishing hose 80 housed in the fire hydrant device 10 shown in Fig. 4, and the outer diameter of the hose is, for example, about 40 mm. Also, as the column main body 1210 and the connecting column 100, general-purpose steel pipes (black pipes) without zinc plating are used. Similar to the steel pipes for piping, for example, general-purpose steel pipes with a nominal diameter of 80A (outer diameter 89.1 mm, wall thickness 8.4 mm) or a nominal diameter of 100A (outer diameter 114.3 mm, wall thickness 9.0 mm) are used, and it is possible to easily pass the shape-retaining hose 110 through the steel pipe.

[0132] In addition, since the connection between the main water supply pipe 25 side and the fire hydrant device 10 is made by a flexible shape-retaining hose 110, the connection work can be performed more easily compared to the case of connecting pipes.

[0133] Moreover, the branch pipe 66 of the valve storage part housed in the fire hydrant device 10 has a structure in which the shape-retaining hose 110 is connected without being connected to the upper end of the water supply pipe and support column 12. Therefore, when the fire hydrant device 10 is suspended by a crane truck and placed on the pedestal 15, the lower end of the branch pipe 66 does not contact the upper end of the water supply pipe and support column 12, so the structure is such that the load of the fire hydrant device 10 is not received impactfully, and a special structure for avoiding receiving the load impactfully is not required.

[0134] Note that the structure on the side of the wire pipe and support column 14 shown in FIG. 1 has the same structure as the water supply pipe and support column 12 composed of the support column main body 1210 and the connecting support column 100 except for the shape-retaining hose 110, except that a steel pipe for piping is used. In addition, in this embodiment, a general-purpose steel pipe is used for the water supply pipe and support column 12, but a steel pipe for piping having the same structure and having the shape-retaining hose 110 passed through the inside may also be used.

[0135] [Installation Structure of Fire Hydrant Device with Angle Adjustment Structure] Subsequently, the installation structure of the fire hydrant device with an angle adjustment structure will be described. In this description, refer to FIG. 13 showing the installation structure of the fire hydrant device on the inclined road surface as viewed from the front in the installation state in the tunnel, and FIG. 14 showing the inclination angle adjustment structure provided at the upper end of the wire pipe and support column in FIG. 13. Note that FIG. 14(A) shows the set state of the minimum height, and FIG. 14(B) shows the set state with the height extended.

[0136] As shown in Fig. 13, when there is, for example, an upward right inclination angle θ with respect to the horizontal line 124 on the road surface line 20a of the monitor passage 20, the road surface line 24a of the floor slab 24 that is the road surface of the duct passage 22 where the concrete base 16 is arranged also has an upward right inclination angle θ. When a pair of concrete bases 16 are installed on the floor slab 24 with the inclination angle θ such that the upright surface at the upper end is horizontal, the height of the upright surface at the upper end will be different on the left and right. In this state, when the water supply pipe and support column 12 and the wire pipe and support column 14 of the same height are erected on the concrete base 16 and the fire hydrant device 10 is placed and fixedly attached to the pedestal 15 supported at the upper end, the fire hydrant device 10 will also be installed at an upward right inclination angle θ. Here, the road surface line 20a means a line in the longitudinal direction of the tunnel parallel to the road surface of the monitor passage 20.

[0137] Therefore, in the present embodiment, by providing an inclination angle adjustment structure 112 at the upper end of the wire pipe and support column 14, the height of the wire pipe and support column 14 can be adjusted so that the fire hydrant device 10 fixedly attached to the pedestal 15 is horizontally arranged.

[0138] As shown in Fig. 14(A), the inclination angle adjustment structure 112 has an expansion and contraction pipe 114 provided with a flange 90a slidably arranged in the tip opening of the support column body 1410 of the wire pipe and support column 14. Through holes 116 are formed in a row at predetermined intervals 2ΔH, for example, at three locations in the longitudinal direction of the outer periphery of the expansion and contraction pipe 114. Also, through holes 116 are arranged in a row at three locations in the longitudinal direction of the outer periphery at positions 90° different, with a shift of ΔH at predetermined intervals 2ΔH. Further, a through hole 118 is formed at the position of the support column body 140 corresponding to the uppermost through hole 116 of the expansion and contraction pipe 114 at the position where the tip of the support column body 1410 is the minimum height.

[0139] Therefore, as shown in Fig. 14(A), by aligning the uppermost through hole 116 of the expansion and contraction pipe 114 with the through hole 118 of the support column body 1410 and fixing it with a bolt 120 and a nut 122, the upper end of the expansion and contraction pipe 114 can be set to the minimum height.

[0140] Further, as shown in Fig. 14(B), the tilt angle adjustment structure 112 aligns with, for example, the fifth through hole 116 from the top among two rows of through holes 116 at different 90° positions of the telescopic pipe 114 with respect to the through hole 118 of the support column main body 1410, and fixes it with a nut 122 through a bolt 120, so that the upper end of the telescopic pipe 114 can be set to a height extended by 4ΔH.

[0141] Here, although the interval for height adjustment of the telescopic pipe 114 is arbitrary, if the interval 2ΔH between three through holes 116 arranged in a row in the vertical direction is, for example, 4 cm, the interval ΔH from the three through holes 116 arranged in a row in the vertical direction at different 90° positions is 2 cm, and the height of the telescopic pipe 114 can be set in six steps in the range of 0 to 10 cm at intervals of ΔH = 2 cm. In this case, if the interval between the water supply pipe-cum-support column 12 and the wire pipe-cum-support column 14 is, for example, 200 cm, it can correspond to road gradients of 0% to 5% (six steps at 1% intervals), but the interval ΔH can be set as appropriate according to the gradient of the road where the fire hydrant device is installed.

[0142] Therefore, as shown in Fig. 13, when there is an upward right tilt angle θ in the road surface line 20a, by setting the telescopic pipe 114 at the upper end of the wire pipe support column 14 to be higher, it is possible to adjust the gantry 15 to have an inclination angle substantially parallel to the horizontal line 124.

[0143] Further, the tilt angle adjustment structure 112 is configured to set the gantry 15 to be horizontal or tilted corresponding to the road surface tilt when there is a road surface tilt in the monitor passage 20, but it is not limited to this, and it also includes the case where the angle is finely adjusted as necessary even when there is no road surface tilt in the monitor passage 20. For example, although there is no road surface tilt in the monitor passage, the gantry 15 may be slightly tilted in the longitudinal direction of the tunnel due to the flatness of the road surface or the like. Even in such a case, it is possible to adjust the height of the gantry 15 to be set to be horizontal or tilted corresponding to the road surface tilt.

[0144] [f. Installation Structure of Fire Hydrant Device with Reinforcing Pipe] Next, the installation structure of the fire hydrant device equipped with the reinforcing pipe will be described. In this description, reference is made to FIG. 15 showing the reinforcing structure of the water supply pipe-cum-column and the electric wire pipe-cum-column from the front in the installation state in the tunnel, FIG. 16 showing the taken-out reinforcing structure of the water supply pipe-cum-column in FIG. 15, and FIG. 17 showing the assembled and disassembled state of the reinforcing structure of the water supply pipe-cum-column in FIG. 15. Note that FIG. 16(A) shows the cross-section of the reinforcing structure of the water supply pipe-cum-column, and FIG. 16(B) shows the cross-section of the cutting line d-d in FIG. 16(A).

[0145] As shown in FIG. 15, in this embodiment, a reinforcing pipe 126 is provided between the road surface of the inspector passage 20 and the pedestal 15 for the water supply pipe-cum-column 12 and the electric wire pipe-cum-column 14 for installing the fire hydrant device 10 at a predetermined height on the inspector passage 20, which is a feature thereof.

[0146] As shown in FIG. 16 for the water supply pipe-cum-column 12 side, between the road surface of the inspector passage 20 and the pedestal fixing plate 98 of the water supply pipe-cum-column 12 with the pedestal 15 attached and fixed to the upper end through the inspector passage 20, an auxiliary pipe 126 having a structure divided into two axially split reinforcing pipes 126a and 126b is attached and fixed to the water supply pipe-cum-column 12 via a heat insulation layer 128 using a heat insulation material (heat insulating material) such as expanded polystyrene. For this reason, the contact surface 136 is formed in the axial direction (vertical direction) of the split surface of the half pipe portion 132 for the split reinforcing pipes 126a and 126b, and a split flange 130 is provided at the lower end of the half pipe portion 132.

[0147] As shown in FIG. 17, the mounting structure of the reinforcing pipe 126 is arranged so as to sandwich a pair of split reinforcing pipes 126a and 126b via the heat insulation layer 128 outside the water supply pipe-cum-column 12, and the contact surface 136 is fastened and fixed by bolts 134 and nuts 135.

[0148] As shown in Fig. 16, the reinforcing pipe 126 disposed outside the water supply pipe-cum-support column 12 with a heat-insulating layer 128 interposed therebetween has a flange portion 130 at the lower end placed on the road surface of the inspector passage 20, and the upper end is located below the gantry fixing plate 98. Therefore, when the fire hydrant device 10 is placed, the load received on the right side of the gantry 15 is borne by a double-column structure formed by the inner water supply pipe-cum-support column 12 and the outer reinforcing pipe 126, and the strength for supporting the fire hydrant device 10 is increased.

[0149] Since the wire pipe-cum-support column 14 passes through the wiring cable 30, it is not necessary to arrange a heat-insulating layer for freeze prevention. However, in order to ensure the same support strength as that of the water supply pipe-cum-support column 12 side, similarly, a reinforcing pipe 126 is attached and fixed to the outside with a heat-insulating layer interposed therebetween. Therefore, when the fire hydrant device 10 is placed, the load received on the left side of the gantry 15 is borne by a double-column structure formed by the inner wire pipe-cum-support column 14 and the outer reinforcing pipe 126, and the strength for supporting the fire hydrant device 10 is increased. Note that the heat-insulating layer 128 disposed inside the reinforcing pipe 126 includes a case where it has a heat-insulating heater.

[0150] [g. Modification Example of the Present Invention] A modification example of the installation structure of the fire hydrant device according to the present invention will be described. The installation structure of the fire hydrant device of the present invention includes the following modifications in addition to the above-described embodiment.

[0151] (Fire Hydrant Door) In the above-described embodiment, when the closing hold is released by operating the door opening / closing handle 3610, the fire hydrant door 36 rotates downward about the hinge 36a at the lower end to open. However, when the closing hold is released by operating the door opening / closing handle 3610, the fire hydrant door 36 may have a structure in which it slides down and opens. In this case, a buffer mechanism is provided to suppress the descending speed of the fire hydrant door 36.

[0152] (Fire Hydrant Valve Opening / Closing Operation Portion) In the above embodiment, the operation box including the fire hydrant valve opening / closing lever that constitutes the fire hydrant valve opening / closing operation unit is fixed to the frame member of the lattice that partitions the front opening of the hose storage unit. However, the present invention is not limited to this. For example, it may be fixed to the back side of the fire hydrant door that rotates downward to open.

[0153] (Housing of the fire hydrant device) In the above embodiment, the electrical equipment and the fire extinguisher are housed in the second housing. However, the second housing may be divided into two housings, namely the second housing and the third housing, and the fire extinguisher may be housed in the second housing on the central side, and the electrical equipment may be housed in the third housing on the side end side.

[0154] (Support structure) Further, in the embodiment, the pipe is placed in one support column, and the wiring cable is placed in the other support column. However, it is also possible that nothing is placed in one support column, and the pipe and the wiring cable are placed in the other support column.

[0155] (Others) Furthermore, the present invention includes appropriate modifications that do not impair its objectives and advantages, and is not limited by the numerical values shown in the above embodiments.

Explanation of reference numerals

[0156] 10: Fire hydrant device 12: Water supply pipe and support column combined 1210: Support column body 1220: Upper end opening 1222: Lower end opening 1224: Side end opening 14: Electrical conduit and support column combined 15: Stand 16: Concrete base 18: Tunnel wall surface 20: Supervisor passage 22: Duct passage 24: Floor slab 25: Main water supply pipe 26: Branch pipe 28: Shut-off valve 30: Wiring cable 32: Road 34a: First housing 34b: Second housing 35a, 35b, 35c: Cosmetic frame 36: Fire hydrant door 3610, 4010: Door opening / closing handle 3612: Door storage recess 38: Maintenance door 40: Fire extinguisher door 4012: Peephole 42: Fire extinguisher 44: Electrical equipment door 46: Auxiliary door 48: Red indicator light 50: Transmitter 54: Phone jack 52: Response lamp 56a, 56b: Terminal box 58: Valve storage section 60: Hose storage section 62: Fire extinguisher storage section 64: Electrical equipment storage section 66: Branch pipe 68: Water supply tap 70: Water supply pipe 72: Fire hydrant valve 74: Automatic pressure regulating valve 76: Frame 78: Hose outlet 80: Fire hose 82: Drain nozzle 84: Nozzle holder 86: Fire hydrant valve opening / closing lever 88: Operation box 90: Interlocking box 92: Pump starting device 94: Pump starting interlocking device 96a, 96b, 96c, 130: Flange 98: Mounting fixing plate 100: Connecting strut 102: Second connecting strut 104: Passage retaining wall 106: Strut fixing pedestal 108: Through hole 110: Shaped hose 112: Tilt angle adjustment mechanism 114: Telescopic pipe 116, 118: Through holes 120, 134: Bolts 122, 135: Nuts 124: Horizontal line 126: Reinforcing pipe 126a, 126b: Split reinforcing pipes 128: Thermal insulation layer 132: Half-pipe section 136: Contact surface 138: Through hole

Claims

1. An installation structure of a fire hydrant device installed in proximity to or in contact with a tunnel wall at a predetermined height above the road surface of a monitor passage provided along the wall surface of a tunnel having a road, comprising: a pair of columns standing on the road surface of a duct passage formed below the road surface of the monitor passage, passing through the monitor passage, and having upper ends disposed at the predetermined height; a pedestal supported by upper ends of the pair of columns for mounting and fixedly attaching the fire hydrant device; and comprising: a column structure for supplying fire extinguishing water to the fire hydrant device through one of the columns and drawing a wiring cable into the fire hydrant device through the other column. The installation structure of the fire hydrant device is characterized by having this column structure.

2. The installation structure of the fire hydrant device according to Claim 1, wherein: the pair of columns are steel pipes for piping; one of the steel pipes for piping is a column for both water supply and use for supplying fire extinguishing water to the fire hydrant device; and the other of the steel pipes for piping is a conduit for both wires for drawing a wiring cable into the fire hydrant device. The installation structure of the fire hydrant device is characterized by having this.

3. The installation structure of the fire hydrant device according to Claim 2, wherein: the pair of columns: comprise a column body having openings with flanges at each of an upper end, a lower end, and a side end near the lower end, standing on the duct passage, passing through the monitor passage, and having an upper end disposed at the predetermined height; a connecting column having openings with flanges at each of an upper end and a lower end and connected to an upper end side of the column body; a pedestal fixing plate for detachably fixing the pedestal; and are composed of: the pedestal fixing plate is fixed so as to be sandwiched between a flange of an upper end opening of the column body and a flange of a lower end opening of the connecting column. The installation structure of the fire hydrant device is characterized by having this.

4. The installation structure of the fire hydrant device according to Claim 3, wherein: the column for both water supply comprises a second connecting column that is detachable following the connecting column; when mounting and fixedly attaching the fire hydrant device on the pedestal during installation of the fire hydrant device, the second connecting column is removed to avoid contact with a water supply pipe on the fire hydrant device side, and after fixedly attaching the fire hydrant device to the pedestal, the second connecting column is attached and connected and fixed to the water supply pipe on the fire hydrant device side. The installation structure of the fire hydrant device is characterized by having this structure.

5. The installation structure of the fire hydrant device according to Claim 1, wherein: The installation structure of the fire hydrant device is characterized in that the pair of columns are erected and fixed on a concrete base installed on the duct passage in contact with the tunnel wall surface.

6. The installation structure of the fire hydrant device according to claim 1, wherein the pair of columns are erected and fixed on a column fixing gantry composed of angle steel materials installed on the tunnel wall surface side of the duct passage.

7. The installation structure of the fire hydrant device according to claim 1, wherein the pair of columns are steel pipes for piping or general-purpose steel pipes, one of the steel pipes is a water supply pipe and column combination that supplies fire extinguishing water to the fire hydrant device by inserting a shape-retaining hose, and the other steel pipe is an electric wire pipe and column combination that draws a wiring cable into the fire hydrant device.

8. The installation structure of the fire hydrant device according to claim 2 or 7, when there is a road surface slope corresponding to the road gradient at the location where the fire hydrant device is installed on the inspector passage, the height of the upper end of the electric wire pipe and column combination is changed so that the gantry is in a horizontal or nearly horizontal state, or a state finely adjusted with respect to the road surface slope, and the gantry is fixed, having an inclination angle adjustment structure.

9. The installation structure of the fire hydrant device according to claim 1, wherein a reinforcing steel pipe divided in the axial direction is attached and fixed with a heat insulating layer sandwiched therebetween outside the pair of columns located between the road surface of the inspector passage and the gantry of the fire hydrant device.

10. The installation structure of the fire hydrant device according to claim 2 or 7, wherein the fire hydrant device includes a first housing and a second housing connected and fixed in the lateral direction that is the advancing direction of the inspector passage, the first housing arranges a valve storage part on one side surface side and arranges a fire hose storage part on the central side connected to the second housing, the second housing arranges an electrical equipment storage part on one side surface side and arranges a fire extinguisher storage part on the central side connected to the first housing, the upper end of the water supply pipe and column combination is located below the valve storage part of the first housing, and the tip of the electric wire pipe and column combination is located below the electrical equipment storage part of the second housing, and the water supply pipe and column combination and the electric wire pipe and column combination are arranged in the lateral direction.

Images