JP2015083057A - Fire hydrant device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire hydrant device for realizing a hose storage capable of properly storing a hose shrunken in no water conduction state and corresponding properly to the elongation of a hose in the case of the water conduction.SOLUTION: In a hose storage structure, there is arranged an elliptical drum 50 having an elliptical end face structure in a casing 12, and a hose 42 shrunken in a no load state of no water supply to a length of 15 m is wound on the outer circumference of the elliptical drum 50. The hydrant door is opened to extract a nozzle 54, and the hose 42 is fed with water by the opening operation of a hydrant valve by a hydrant valve lever 48 so that the hose 42 is extended to a length of 30 m, thereby to perform a fire extinction. When the water conduction is stopped, the hose restores its original length while discharging the water.

Description

The present invention relates to a fire hydrant apparatus that opens a fire hydrant door provided at an opening on the front surface of a housing and draws out a hose with a nozzle stored in a hose storage part to discharge water.

  Conventionally, tunnel fire hydrants installed in tunnels such as expressways and automobile roads, or indoor fire hydrant devices installed in buildings, etc., have a hose and valve with a nozzle mounted at the tip in a casing equipped with an open fire hydrant door. In the event of a fire, open the fire hydrant door, pull out the hose with a nozzle from the housing, and open the fire hydrant valve to extinguish the fire.

  The fire hydrant device for tunnels, indoor No. 2 fire hydrant, simple operability No. 1 fire hydrant uses shape retaining hoses, for example, tunnel fire hydrant devices are installed at intervals of 50m, and fire hydrant hoses use shape retaining hoses. The hose length is 30m, and the protection range on both the left and right sides can be covered.

JP 2010-151246 A JP 2012-065886 A

  However, the hose used for such a fire hydrant device is required to have a length of 15 m to 30 m, and the size of the housing depends on the space required for housing the hose, so it is necessarily large. This is a problem that needs to be improved from the viewpoints of ease of use, workability, resource saving, and the like, because the storage space for the hose is secured and the fire hydrant device becomes larger. Further, when water is discharged in the event of a fire or when a water discharge test is performed at the time of inspection, it is necessary to pull out all the hoses and drain the water before storing them, so there is a problem that it takes time and labor.

  In order to solve this problem, the applicant of the present invention has contracted to a predetermined length in a no-load state in which water is not discharged, and is extended to a required length in a load state in which fire-extinguishing water is supplied under pressure. Has proposed an extensible fire extinguishing hose that can ensure pressure resistance, wear resistance and flexibility (Japanese Patent Application No. 2013-139344).

  In this way, when the expansion / contraction hose that is shrunk in a no-load state that is not discharged and extends to the required length in a load state that is supplied with fire-fighting water under pressure is used in a fire hydrant device, use multiple hoses. The hose storage structure of the conventional fixed-length hose that is wound or internally wound is not compatible, and it is shrunk in a no-load state that does not discharge water, and considers the characteristics of the expansion and contraction hose that expands when pressurized water is supplied. The new hose storage structure that remains is a problem.

An object of the present invention is to provide a fire hydrant device that properly stores a hose that is shrunk in a no-load state that is not passing water, and that realizes hose storage that can appropriately cope with the elongation of the hose when the water passes. And

(Fire hydrant device)
The present invention provides a fire hydrant device,
A box-shaped housing with a door opening on the front;
A fire hydrant door supported openably and closably at the door opening of the housing;
A hose with a telescopic nozzle that shrinks to a predetermined length in a no-load state that does not pass water, and extends to a predetermined length that is required in a loaded state that passes water;
A hose storage structure for storing a hose contracted to a predetermined length in the housing or on the back side of the fire hydrant door so that it can be pulled out with the fire hydrant door open.
Is provided.

(Outer winding structure of drum in housing)
In the hose storage structure, a drum having a circular, oval, elliptical, or polygonal end face shape having a predetermined depth is disposed in the casing, and water is not passed through the outer periphery of the drum. A hose that is contracted to a predetermined length in a no-load state is wound once or multiple times so that the hose can be extended to the outside in a loaded state through which water has passed.

(External winding structure of the fire hydrant door backside drum)
The fire hydrant door can be opened or closed forward or sideways,
In the hose housing structure, a drum having a circular, oval, elliptical, or polygonal end face shape with a predetermined depth is arranged on the back side of the fire hydrant door, and water is passed through the outer periphery of the drum. A hose that is shrunk to a predetermined length in an unloaded state is wound once or multiple times, and the tip side of the hose can be extended to the outside in a loaded state with water flowing.

(Inner winding structure of drum in housing)
In the hose storage structure, a drum having a circular, oval, elliptical, or polygonal end face shape having a predetermined depth length is arranged in the housing, and water is not passed through the inner periphery of the drum. A hose that is contracted to a predetermined length in an unloaded state is wound in a single or multiple manner, and the tip end side of the hose can be extended to the outside in a loaded state in which water has passed.

(Inner winding structure on the back of the fire hydrant door)
In the hose storage structure, a drum having a circular, oval, elliptical, or polygonal end face shape with a predetermined depth is arranged on the back side of the fire hydrant door, and water is passed through the inner periphery of the drum. A hose that has been shrunk to a predetermined length in an unloaded state is wound in a single or multiple manner so that the tip side of the hose can be extended to the outside in a loaded state.

(Drum reel structure)
The drum has a rotatable reel structure.

(Storage structure with internal and external drums in the housing)
The hose storage structure is inside the housing.
A hose that has a circular, oval, elliptical, or polygonal end face shape that has a predetermined depth length and that is contracted to a predetermined length in a non-loading state without passing water. Or multiple inner drums,
An outer drum that is arranged outside surrounding the outer periphery of the inner drum and holds a hose extending to a predetermined length in a loaded state through which water passes,
Place.

(Storage structure with fire hydrant door inner and outer drums)
The hose storage structure is located behind the fire hydrant door.
A hose that has a circular, oval, elliptical, or quadrangular or more polygonal end face shape with a predetermined depth length and is shrunk to a predetermined length in a non-loading state without passing water or An inner drum with multiple outer windings,
An outer drum that is arranged outside surrounding the outer periphery of the inner drum and holds a hose extending to a predetermined length in a loaded state through which water passes,
Place.

(Housing storage structure that stores part of the extension hose and extends the rest to the outside)
The hose storage structure is inside the housing.
A hose that has a circular, oval, elliptical, or polygonal end face shape with a predetermined depth length and is contracted to a predetermined length in a no-load state without passing water or An inner drum with multiple outer windings,
A part of the rear end of the hose, which is placed outside and surrounds the outer periphery of the inner drum and extends to a predetermined length under the condition of passing water, is held inwardly and the remaining front end is externally An outer drum that can be extended to
Place.

(Fire hydrant door storage structure that stores part of the extension hose and extends the rest to the outside)
The hose storage structure is located behind the fire hydrant door.
The hose which has a circular, oval, elliptical or polygonal end face shape with a predetermined depth length and is contracted to a predetermined length in a no-load state without passing water is arranged on the outer periphery. An inner drum that is externally wound in heavy or multiple, and
A part of the rear end of the hose, which is placed outside and surrounds the outer periphery of the inner drum and extends to a predetermined length under the condition of passing water, is held inwardly and the remaining front end is externally An outer drum that can be extended to
Place.

(Drum telescopic structure)
In the hose storage structure, a fixed drum having a circular, oval, elliptical, or polygonal end face shape having a predetermined depth is fixed in the housing and slid forwardly to the outside of the fixed drum. A movable drum is arranged so that it can move freely, and a hose that has been shrunk to a specified length in a non-load-free state without passing water is wound around the outer or inner circumference of the movable drum in a single or multiple manner. The movable drum can be moved forward with respect to the fixed drum as the hose extends to the outside in the state.

(Extensible hose structure)
Hose
A watertight layer formed of a first material that is provided on a water-permeable surface that is in direct contact with water, is stretchable by a predetermined elongation rate, and is impermeable to water;
Bonded to the outside of the water-tight layer or closely attached to the exterior, and is made of a second material that can expand and contract with an elongation equal to or less than that of the water-tight layer and has the strength to withstand the water pressure caused by water flow. Cover layer,
Is provided.

(Basic effect)
According to the fire hydrant apparatus of the present invention, a box-shaped housing having a door opening formed on the front surface, a fire hydrant door supported to be freely opened and closed in the door opening of the housing, and a predetermined outside in a no-load state without water passage. A hose with a telescopic nozzle that expands to a specified outer diameter and length required under a loaded condition that is reduced in diameter and length, and a hose that is contracted to a specified length can be installed in the housing or on the fire hydrant door. Since the hose housing structure is provided on the back side so that the fire hydrant door is opened and can be pulled out freely, the following effects can be obtained.

  First, when storing a hose, in order to store a hose that is contracted to a predetermined length in an unloaded state, for example, a conventional fixed length hose is contracted to half its length in an unloaded state. If this is the case, it is possible to halve the hose storage space in the housing of the fire hydrant device, and the housing can be made much smaller, thereby opening up the concrete box that forms the installation space on the tunnel wall or building wall The construction cost can be reduced significantly.

  Also, when opening the fire hydrant door and pulling out the hose stored in the housing or on the back side of the fire hydrant door, if the fire hydrant valve is opened and the fire water is drained, the water will be shrunk under no load as the fire water flows. By extending the hose that has been extended and extending in the pull-out direction, the pull-out force of the hose by the user is reduced, and it is possible to facilitate the fire-fighting operation.

  Also, when the drainage of the hose that was pulled out was stopped, the hose shrunk itself and drained, returned to the housing side and returned to the original shrunken length before draining, and the hose remaining in the housing was pulled out and drained completely. This makes it easy and easy to rewind the hose into the hose storage section later, improving work efficiency and greatly shortening the work time.

  In addition, in the case of a fire hydrant device for tunnels, inspection is conducted by restricting traffic in the tunnel, and if water is discharged using a hose in the inspection, it is time and labor to drain and rewind the hose after completion of the inspection. However, in the present invention, the drainage of the hose is stopped when water discharge is stopped. And it is possible to finish the work in a short time without taking time to unwind the hose, and therefore the time for regulating the traffic in the tunnel can be shortened, so it is possible to check by checking the water through the hose, It is possible to reliably detect hose failures such as water leakage from the hose and take appropriate measures.

(Effect of drum outer winding structure)
In the hose storage structure, a drum having a circular, oval, elliptical, or polygonal end face shape having a predetermined depth is disposed in the housing or on the back side of the fire hydrant door, and on the outer periphery of the drum. The hose that has shrunk to a specified length in a no-load state that is not passing water is wound in a single or multiple turns so that the hose can be extended to the outside in a loaded state that allows water to pass through. By opening the fire hydrant valve, when water is passed through the hose wound in a single or multiple wrap around the outer periphery of the drum in a contracted state, the hose extends and spreads out from the drum, and slowly and autonomously from the door opening. The extension of the hose itself assists the user in pulling out the hose, making it easier for both parties to draw the hose while discharging water, making fire extinguishing activities easier. .

  In addition, the conventional work of rewinding a fixed length hose to the inner part of the hose storage part, for example, can only be rewound into the inner state unless it is a skilled person. If the hose is unnecessarily loaded, the fire hydrant door is closed, which causes damage and damage to the hose.In the present invention, the shortened and shortened hose is attached to the outer periphery of the drum. Because it is a single or multiple rewinding operation, it is possible to unwind the hose neatly around the drum without being affected by the degree of skill, and it is possible to rewind or rewind the hose without unwinding neatly. It is possible to easily and easily rewind the hose without applying a load and causing damage or damage.

(Effects of drum internal winding structure)
In the hose storage structure, a drum having a circular, oval, elliptical, or polygonal end face shape having a predetermined depth is arranged in the housing or on the back side of the fire hydrant door, and on the inner periphery of the drum, A fire hydrant has been designed so that the hose that is shrunk to a predetermined length in a no-load state that does not pass water is wound in a single or multiple layers, and the tip end of the hose can be extended to the outside in a loaded state that passes water. By opening the door and opening the fire hydrant valve, when the water is passed through the hose wound inside the drum one or more times in the contracted state, the hose extends and the drum tries to spread in the drum. The movement slowly and autonomously extends from the opening to the outside through the door opening. The extension of the hose itself assists the user in pulling out the hose, facilitating both sides of the hose while discharging water and extinguishing the fire. It makes it possible to facilitate the movement.

  In addition, when hose storage is performed after water discharge is stopped, the hose that has been shortened due to shrinkage is rewound in a single or multiple way inside the drum. It does not require the skill level required when winding it back into the storage section, making it possible to rewind the hose neatly inside the drum, adding a load to the hose without rewinding or winding it cleanly. It is possible to easily and easily unwind the hose without causing damage or damage.

(Effects of drum reel structure)
In addition, since the drum around which the hose is wound externally or internally has a rotatable reel structure, when the hose is shrunk, water is passed through the hose wound inside the drum in a single layer or multiple times, so that the hose extends and the drum extends. Due to the force of spreading inside, the drum opens slowly and autonomously through the door opening to the outside, and the drum that receives the force accompanying the movement of such a hose autonomously rotates freely rotates In particular, when the hose is pulled obliquely laterally from the fire hydrant opening, it is possible to prevent an excessive force from being applied to the hose by rotating the drum.

  Further, when rewinding the contracted hose to the outside or the inside of the drum, the hose can be beautifully rewound to the outer periphery or inner periphery of the drum by rotating and rewinding the drum while feeding the hose.

(Effects of internal and external drum storage structure)
In addition, the hose storage structure has a circular, oval, elliptical, or polygonal end face shape with a predetermined depth in the housing or on the back side of the fire hydrant door. The hose, which has been shrunk to a predetermined length in the state, is wound on the outer periphery with a single or multiple outer winding, and the outer side of the inner drum surrounds the outer periphery and is placed on the outer side. The outer drum that holds the inner hose in the inner winding state is arranged on the inner side. By opening the fire hydrant door and opening the fire hydrant valve, the outer hose is opened to the outside of the inner drum. When water is passed through the wound hose, the hose expands so as to be inwardly wound with respect to the outer drum, and the hose can be extended in the housing.For example, before the water discharge nozzle is removed, the fire hydrant valve is opened. Shrinking Even if the water is passed through the hose, the hose does not stretch out and is not pushed out.Suppresses unnecessary hose extrusion due to hose extension when extinguishing a fire near the fire hydrant device. The hose can be pulled out as much as necessary to perform appropriate fire fighting activities.

(Effect of housing storage structure that stores a part of the extension hose and extends the rest to the outside)
In addition, the hose storage structure has a circular, elliptical, or polygonal end face shape having a predetermined depth length in the housing or on the back side of the fire hydrant door, and is in a non-loading state where water is not passed. After the hose shortened in length, the inner drum is wound around the outer periphery in a single layer or multiple times, and after the hose that is placed outside and surrounds the outer periphery of the inner drum, and extends to a predetermined length under the condition of passing water Since the outer drum that holds the part on the end side inwardly and holds the remaining tip side to the outside is arranged, by opening the fire hydrant door and opening the fire hydrant valve When the water is passed through a hose wound in a single or multiple externally wound outside the inner drum in a contracted state, the hose expands so that a part of the root side of the hose is in an inner wound state with respect to the outer drum, The remaining hose tip side With the movement of fire-extinguishing water, the movement is autonomously extended to the outside. By combining the expansion of the flowed hose inside the casing with the movement of the hose that extends autonomously, the advantages of both can be utilized. Enable fire fighting activities.

(Effects of drum expansion / contraction structure)
In addition, the hose storage structure fixes a fixed drum having a circular, oval, elliptical, or polygonal end face shape having a predetermined depth in the housing, and forward to the outside of the fixed drum. A movable drum is slidably disposed on the outer periphery of the movable drum, and a hose that is shrunk to a predetermined length in a non-load-free state is wound around the outer periphery or inner periphery of the movable drum in a single or multiple manner. The movable drum can be moved forward with respect to the fixed drum as the hose extends to the outside under the load condition, so the movable drum moves forward by the hose extension due to water flow and assists in the hose extension. And allows a smooth drawer.

(Effect of telescopic hose structure)
The hose is provided on a water-permeable surface that is in direct contact with water, is stretchable by a predetermined elongation rate, and is bonded to the outside of the water-tight layer with a water-tight layer formed of a material that does not allow water to pass through, or is externally attached to the water-tight layer, A cover layer made of a material that can stretch and contract with an elongation equal to or less than that of the watertight layer and has a strength that can withstand the water pressure associated with water flow is provided, so there is no water load. The fire extinguishing hose is shortened and thinned to reduce the storage space, lighter, easier to hold, and shorten the work time required for storage. .

  In addition, by providing a cover layer that can withstand the water pressure associated with water flow, it has sufficient strength to withstand high-pressure water flow when used in a fire hydrant device for tunnels, ensuring pressure resistance and durability. In addition, wear resistance against repeated use can be secured.

Also, by setting the elongation rate of the outer cover layer to be equal to or less than the elongation rate of the inner watertight layer, the watertight layer and the cover layer are separated when water flow is started and when water flow is stopped. When the water hose for fire extinguishes automatically when stretched together and starts water flow, it automatically extends under pressure from water flow, making it easy to use fire hydrants. If the water flow is stopped after use and the load is not loaded, the fire hose automatically shrinks and drains, draining is easy, and it is easy to recover when the water is discharged due to fire or maintenance.

Explanatory drawing which showed embodiment of the fire hydrant apparatus by this invention from the front 1 is a front view showing the internal structure of the main body with the fire hydrant door removed. Side view showing the internal structure with the fire hydrant door open Explanatory drawing shown in the no-load state which does not let water flow through the embodiment of the hose Explanatory drawing which took out the hose cross section in the no-load state of FIG. Explanatory drawing which showed the example of the dimensional relationship about a circular drum and an oval drum Explanatory drawing showing fire extinguishing activities performed by pulling out the hose from the fire hydrant device Explanatory drawing which showed other embodiment which has arrange | positioned the oval drum to the back side of the fire hydrant door Explanatory drawing which showed other embodiment which has arrange | positioned the inner volume drum in the housing | casing Explanatory drawing which showed other embodiment which has arrange | positioned the inner volume drum on the back side of the fire hydrant door Explanatory drawing which showed other embodiment which has arrange | positioned the drum reel in the housing | casing. Explanatory drawing which showed other embodiment which has arrange | positioned the drum reel to the back side of the fire hydrant door Explanatory drawing which showed other embodiment which has arrange | positioned the inner side drum and the outer side drum in a housing | casing Explanatory drawing showing an example of the dimensional relationship between the inner and outer drums Explanatory drawing which showed other embodiment which has arrange | positioned the inner drum and the outer drum on the back side of the fire hydrant door Explanatory drawing which showed other embodiment which provided in the housing | casing the hose storage structure which hold | maintains a part of hose extended by water flow in a drum, and extends the remainder outside. Explanatory drawing which showed other embodiment which provided the hose storage structure which hold | maintains a part of hose extended by water flow in a drum, and extends the remainder outside on the back side of a fire hydrant door Explanatory drawing which showed embodiment of the fire hydrant apparatus which provided the hose accommodation structure in which a drum expand | extends with the expansion | extension of a hose in a housing | casing

[Outline of fire hydrant device]
1 is a front view showing the fire hydrant device of the present invention, FIG. 2 is a front view showing the internal structure of the main body with the fire hydrant door removed from FIG. 1, and FIG. 3 is a side view showing the internal structure with the fire hydrant door open. FIG.

(Outline structure)
As shown in FIG. 1, the fire hydrant device 10 has a structure in which a housing 12 is divided into a fire hydrant side and a fire extinguisher side. After the members are assembled, they are connected and fixed, and in this state, they are carried into the tunnel site and installed on the gantry 11.

  The door opening 16 of the right decorative panel 14 is vertically divided into two parts, a fire hydrant door 18 opened downward by a hinge 21 is disposed in the lower door opening, and an upper door 22 opened upward by a hinge 23 in the upper door opening. The inside is used as a hose storage space and a valve storage space.

  The fire hydrant door 18 is closed at the closed position by a door lock mechanism using a magnet and a backing plate. The fire hydrant door 18 can be opened forward by pulling the handle 20 forward and releasing the lock by the magnetic adsorption of the door lock mechanism. The upper door 22 is closed at a closed position by a door lock mechanism using a magnet and a backing plate, and can be opened by opening the fire hydrant door 18 and releasing the inner lock.

  A notification device door 24 is provided on the left side of the door opening 16, a red indicator lamp 26, a transmitter 28 and a response lamp 30 are provided here, and a telephone jack 31 is provided on the back side of the notification device door 24 as shown in FIG. Is provided.

  The red indicator lamp 26 is always turned on so that the installation location of the fire hydrant apparatus 10 can be seen from a distance. In the event of a fire, when the push button is turned on by pressing the transmitter 28, a transmission signal is transmitted to the disaster prevention receiving board such as an electrical room, a fire alarm is issued, and a response signal is sent from the disaster prevention receiving board accordingly. The lamp 30 is turned on.

  An openable fire extinguisher door 32 is provided on the left side of the reporting device door 24, for example, containing two fire extinguishers. The fire extinguisher door 32 is provided with a handle 34. When the handle 34 is pulled forward, the magnet is removed and the fire extinguisher door 32 can be opened to the left. Further, a viewing window 35 is provided below the fire extinguisher door 34 so that the presence or absence of the fire extinguisher can be confirmed from the outside.

(Outline of internal structure)
As shown in FIG. 2, the fire hydrant door 18 is removed, and the upper door 22 is opened upward and supported by a stay 27 to show the internal structure. The upper door 22 is normally closed except when the hose of the fire hydrant device is stored. A hose storage space 36 is formed in the approximate center of the housing 12, and a valve storage space 38 is formed on the right side thereof.

(Valve storage space)
As shown in FIG. 2, in the valve storage space 38, a water supply valve 44, a fire hydrant valve, an automatic pressure regulating valve 46, or a constant valve is connected to a piping system from a fire hydrant connection port 40 to which a pipe from a pump facility is connected to a hose 42. A flow valve, automatic drain valve, safety valve and maintenance device 47 are provided. Among these, a nameplate is provided corresponding to the hydrant valve opening / closing lever 48 provided in the hydrant valve, and a hydrant valve and an automatic drain valve are arranged on the back side thereof.

(Hose storage space)
As shown in FIGS. 2 and 3, the hose storage space 36 has an oval drum 50 having an oval end surface and a single hose 42 that is retractable on the outer periphery of the oval drum 50. It is wound around and stored. The base side of the hose 42 wound around the oval drum 50 is connected to a hose connection port 52 provided in the lower part of the valve storage space 38.

  The hose 42 is contracted to a predetermined length, for example, 15 m in a no-load state where water is not passed through, and is extendable to 30 m, which is twice as long as the contracted length required in the loaded state. A hose. Further, the diameter of the hose 42 is reduced to a predetermined outer diameter, for example, 2.5 cm in a no-load state in which water is not passed, and is expanded to a predetermined outer shape, for example, 5.0 cm required in a loaded state in which water is passed. It is a hose that can expand and contract in the radial direction.

  A nozzle 54 is attached to the tip of the hose 42, and the nozzle 54 is constituted by a water discharge portion and a handle, and discharges water with respect to a nozzle holder 58 provided on a support plate 56 arranged vertically on the opening end surface of the oval drum 50. With the part held sideways, the handle is positioned below the water discharge part so as to face the center of the lower door opening by opening the fire hydrant door 18. The handle of the nozzle 54 may be held so as to face the back surface of the fire hydrant door 18.

  The hose storage space 36 and the valve storage space 38 are partitioned by disposing a frame 55 in which pipe members are disposed in the vertical and horizontal directions.

[Hose structure]
Drawing 4 is an explanatory view shown in the contracted state used as the no-load state which does not let water flow through the embodiment of a fire extinguishing hose.

  As shown in FIG. 4, the fire hose 42 is shrunk to a predetermined length L, for example, L = 15 m, in a no-load state where water is not passed, and the hose structure is provided on a water flow surface that is in direct contact with water. The water-tight layer 60 and the cover layer 62 provided outside the water-tight layer 60 have a two-layer structure.

(Structure of watertight layer)
The watertight layer 60 is formed of a material that can expand and contract at a predetermined elongation rate and does not allow water to pass therethrough. The material forming the watertight layer 60 is a predetermined length which is extended at least 1.5 to 8 times in a load state in which fire extinguishing water of 1 MPa is passed in the case of a tunnel hydrant device when the length of the no-load state is 1. A synthetic rubber or a predetermined synthetic resin having an elongation ratio of 1 to 5 is used. Formation of the watertight layer 60 can be realized by manufacturing a hose rubber made of, for example, synthetic rubber having a predetermined inner diameter and thickness.

  Here, the term “elongation rate” refers to, for example, the length of elongation when the rubber string is stretched to the limit where it can be cut by force, and is also called elongation. In the case of synthetic rubber, the elongation rate is about 850, which means that if the length in the no-load state is 100%, it means that the length in the no-load state is 1 in addition to this. 9.5 times, sufficiently satisfying the conditions of the watertight layer 12 of the present embodiment.

(Configuration of cover layer)
The cover layer 62 is bonded to the outside of the watertight layer 60 or is externally attached to the cover layer 62. The cover layer 62 can be expanded and contracted by an elongation rate equal to or less than the elongation rate of the watertight layer 60. It is made of a material that can withstand water pressure. Further, since the cover layer 62 rubs against the road surface when the hose 42 as a tunnel fire hydrant is pulled out, the material has little friction and wear resistance to withstand the rub. Here, the inner diameter of the hose 42 in an unloaded state is D1, the outer diameter is D2, and the wall thickness is d.

  The material forming the cover layer 62 is a predetermined fiber or a predetermined synthetic resin having a predetermined elongation rate of 1.5 to 8 times or less in a loaded state. When fibers are used as the material of the cover layer 62, a knitted structure with warp yarns 64 and weft yarns 66 having a predetermined elongation rate of 1.5 to 8 times or less in a loaded state is adopted. In this knitting structure, the weft 66 is spiral.

  As the fiber constituting the cover layer 62 having a knitted structure, for example, spider yarn by artificial synthesis can be used. As such an artificially synthesized spider thread, the trade name “Spybar” manufactured by Spyber Co., Ltd. can be used. The elongation rate of the artificially synthesized spider thread is currently about 50. When the length of the unloaded state is 1, the elongation is 1.5 times and sufficiently satisfies the conditions of the watertight layer 60 of the present embodiment. . In addition, the artificial synthetic spider thread is expected to achieve a higher elongation rate due to its improvement.

  Artificial synthetic spider yarn has four times the strength of steel, has the highest toughness among existing fibers, and has the pressure resistance, durability, and wear resistance required for fire fighting hoses. Satisfied.

  In addition, there exists a polyurethane elastic fiber as a fiber with the elongation rate which can be used for this embodiment. As this polyurethane elastic fiber, for example, there is a product name “Lycra (registered trademark) fiber” of Toray Operontec Corporation. The polyurethane elastic fiber is thin and transparent like a spider thread, stretches to 4 to 7 times its original length when pulled, and quickly returns when the force is relaxed. The polyurethane elastic fiber is usually mixed with other fibers. For example, the cover layer 62 satisfying the elongation rate of the present embodiment can be realized by mixing the polyurethane elastic fiber with the artificial synthetic spider thread described above.

(Unloaded and loaded hoses)
At present, the dimensions of the fire hose used in the tunnel fire hydrant device are as follows, for example.
Inner diameter = about 36mm
Outer diameter = about 42mm
Thickness = about 3mm
Length = 30m

Here, if the elongation rate of the fire-extinguishing hose 42 shown in FIG. 4 is doubled, the dimensions of the hose 42 contracted in a no-load state without water passage are as follows, for example.
Inner diameter (D1) = about 18 mm
Outer diameter (D2) = about 21mm
Thickness (d) = about 6mm
Length (L) = 15m

  FIG. 5 is an explanatory diagram showing a load state extended by passing water with a water pressure of 1 MPa through the unloaded hose 42 shown in FIG. 4 in comparison with a no-load state before passing water.

When water is passed through the unloaded hose 42 shown in FIG. 4, a watertight layer 60 made of synthetic rubber and a cover layer having a knitted structure of, for example, artificial synthetic spider fiber provided on the outside by receiving water pressure due to the water flow. 62 extends in the longitudinal direction and expands in the radial direction, and its dimensions are, for example, as follows, similar to the fire hose of the current tunnel hydrant.
Inner diameter (2.D1) = Approx. 36mm
Outer diameter (2 · D2) = approx. 42mm
Thickness (d / 2) = about 3mm
Length (2 · L) = about 30 meters

That is, in the loaded state, the hose 42 extends to about 30 m, which is about twice as long as that in the unloaded state, the outer diameter extends to about 42 mm, which is almost twice that in the unloaded state, and the inner diameter is also larger than that in the unloaded state. On the other hand, the wall thickness is about twice as large as about 36 mm.

  Here, the outer diameter and length of the hose 42 in a loaded state are determined by the elongation rate of the cover layer 62. That is, the elongation rate of the watertight layer 60 by the hose rubber that is in direct contact with water is as large as 9.5 times, for example, but the elongation rate of the cover layer 62 provided on the outside thereof is twice as large, for example. The dimensions of the hose 42 extend to twice the outer diameter and length that can be determined by the elongation rate of the cover layer 62.

  The initial length of the hose 42 is, for example, when the fire hydrant valve opening / closing lever is operated and is immediately pulled out to approach the fire point when the fire is extinguished. Since it will take about 30 seconds, in order to operate without a sense of incongruity, it takes 15 seconds to extend 30 m after passing the water (for example, if the speed of water running in the hose is 2 m / sec, the speed of water is 30 m) Therefore, if the difference is 15 seconds and the walking speed is 1 m / sec, the initial hose length is 15 m (actually it will gradually grow, so there will be no problem in operability even if it is 15 m or less). Will increase.

(Performance as a fire hose)
The hose 42 of the present embodiment is shrunk to a length of, for example, a half of 15 m in a no-load state in which no water is passed, and the outer shape of the hose 42 is also narrowed to a half of 21 mm. The hose storage space 36 of the illustrated fire hydrant apparatus 10 can be reduced to about half that of the conventional one, the weight of the hose can be reduced to about half, and the time required for rewinding the fire hose 42 to the drum 50 can be shortened. .

  In addition, by providing the cover layer 62 having a strength that can withstand the water pressure associated with water flow, the cover layer 62 has sufficient strength to withstand 1 MPa of high-pressure water flow when used in the fire hydrant device 10, and has pressure resistance and durability. It is possible to secure the wear resistance against repeated use.

  Further, the elongation rate of the outer cover layer 62 is equal to or less than the elongation rate of the watertight layer 60 due to the internal hose rubber, so that when the water flow is started and when the water flow is stopped, 60 and the cover layer 62 are automatically expanded and contracted automatically, and when water passage is started, the fire-extinguishing hose 42 is automatically extended by receiving pressure from water passage, so it is easy to use against fire. A fire hydrant can be realized, and when the water supply is stopped after use and no load is applied, the fire hose 42 automatically drains while shrinking, it is easy to drain water, and recovery work when water is discharged due to fire or maintenance inspection Becomes easier.

  Further, since the outer cover layer 62 is in close contact with the inner watertight layer 60 and there is no gap, it can be operated without any sense of incompatibility. Furthermore, the inner surface of the watertight layer 60 made of hose rubber that comes into direct contact with water can be made smooth unlike the filament structure of the current hose, so that pressure loss can be reduced.

[Drum structure]
FIG. 6 is an explanatory view showing the oval drum shown in FIGS. 2 and 3 in comparison with the circular drum.

  The fire hydrant device 10 shown in FIG. 1 needs to accommodate a hose 42 having a length of 15 m in a contracted state where water does not pass through. For example, the hose is hung on the outside of the circular drum 70 shown in FIG. For example, if the drum outer diameter is 100 cm (= 1 m), the outer periphery is 3.14 m, and about 5 turns are required to wind the 15 m hose 42 outwardly. Here, since the outer diameter of the hose 42 when contracted is about 2.1 cm, the length of the depth after 5 turns is 10.5 cm.

  When the storage by the external winding of the hose 42 by the circular drum 70 is applied to the oval drum 50 in FIG. 6B, when the radius of the semicircular portion 50a is 30 cmm and the length of the linear portion 50b is 60 cm, The length is about 3m, and about 5 turns are required to wind 15m outside. In this case as well, the outer diameter of the hose 42 when contracted is about 2.1 cm, so the length of the depth after 5 turns is 10.5 cm.

  The size of the oval drum 50 that enables the hose 42 that is 15 m in the contracted state to be wound outwardly can be stored in the hose storage space 36 in the housing 12 shown in FIGS. 1 and 2. The size and the width and depth of the conventional casing 12a indicated by the imaginary line can be reduced, which corresponds to the reduction of the conventional hose storage space.

  Since the circular drum 70 shown in FIG. 6A is 1 m in both length and width and has a small effect of reducing the hose storage space, the radius of the circular drum 70 is reduced to, for example, 30 cm. The number of turns increases to about 8 turns, but the length of the depth is 16.8 cm, which is a size that can be sufficiently accommodated in the housing 12, and a circular drum 70 with a small radius may be used.

  The material of the oval drum 50 or the circular drum 70 is as light as possible, such as an injection molded product of synthetic resin, a molded product of a thin metal plate, a molded product of a metal net, and is retained when the hose 42 is wound in a single layer. It is configured to have a possible strength.

  Moreover, as a drum which carries out the hose outer winding used in this embodiment, it is good also as an elliptical drum and a quadrilateral or more polygonal drum other than a circular drum and an oval drum. In the case of a polygonal drum, the corner portion is rounded to make the hose 42 bend gently.

[Hose drawer operation]
FIG. 7 is an explanatory view when the user pulls out the hose from the fire hydrant device, FIG. 7 (A) shows a case where the hose which is shrunk without drawing water, and FIG. Shown when the hose is extended and pulled out.

  As shown in FIG. 7 (A), the fire hydrant device 10 is installed on the wall surface of the monitoring person passage 74 in the tunnel at an interval of 50 m, and when the fire hydrant device 10 is used, the user 72 can move from the tunnel road surface 76. Reach out the fire hydrant device 10 to open the fire hydrant door, take out the nozzle and pull out the hose. In this case, the fire hydrant valve is pulled out without opening, and the hose 42 in a contracted state can be pulled out to 15 m.

  FIG. 7B shows the case where the fire hydrant valve is opened to allow water to pass through the hose, and the hose 42a that extends due to the water flow is pulled out. The user 72 reaches out to the fire hydrant device 10 from the tunnel road surface 76. When the fire hydrant door is opened, the nozzle is taken out and the fire hydrant valve is opened to allow water to pass through, the hose 42 extends to 30 m over a period of about 15 seconds. During this time, the user 72 extends by passing water. The hose 42a can be pulled out to 30 m and discharged from the nozzle 54.

  Further, when the fire hydrant valve is opened and the fire extinguishing water is discharged while being drawn out, the hose 42 which has been shrunk in the no-load state along with the passing of the fire extinguishing water extends and extends in the pulling direction. The pulling-out force of the hose 42 due to can be reduced, and the fire-extinguishing operation can be facilitated.

  Further, when water is passed through the hose 42 wound outwardly on the outer periphery of the oval drum 50 in a contracted state, the hose 42 extends and spreads out from the oval drum 50, and then slowly and autonomously from the door opening 16 to the outside. The movement of the hose itself is extended to assist the user in pulling out the hose, facilitating fire extinguishing activities by facilitating the user to draw the hose while discharging water.

  Moreover, when the water discharge of the hose 42a pulled out as shown in FIG. 7 (B) is stopped, the hose 42a shrinks by itself and returns to the fire hydrant device 10 side while draining, as shown in FIG. 7 (A), before the water discharge. It is easy and easy to return to the original length of the hose 42 and to completely drain the hose 42 and then rewind it to the oval drum 50, thereby improving work efficiency and greatly shortening the work time.

  In particular, the rewinding of the hose 42 onto the oval drum 50 is a process of unwinding the hose 42 that has been shortened by shrinking it around the drum outer periphery, so that the hose 42 is not affected by the level of skill. The drum can be rewound around the drum neatly, and it can be easily and easily rewound without rewinding or damaging and damaging the hose without being wound neatly. Make it possible.

[Hose storage structure on the fire hydrant door side]
FIG. 8 is an explanatory view showing another embodiment of a fire hydrant device provided with a hose housing structure on the back side of the fire hydrant door, FIG. 8 (A) shows a state where the fire hydrant door is closed, and FIG. Shown with fire hydrant door open.

  As shown in FIG. 8, in the present embodiment, a rectangular drum 50 is disposed on the back side of the fire hydrant door 18 so as to face upward, and the rear end is connected to the hose connection port 52 on the outer periphery of the rectangular drum 50. The retractable hose 42 with the nozzle 54 attached to the tip is wound and stored in a contracted state.

  The details of the oval drum 50 in this case are the same as those shown in FIG. 6B, and are arranged on the back side of the fire hydrant door 18 so that the longitudinal direction of the oval drum 50 is the lateral direction.

  When the fire hydrant device 10 is used, as shown in FIG. 8B, when the fire hydrant door 18 is opened, the oval drum 50 disposed on the back side is exposed to the front, and the nozzle 54 is moved from the nozzle holder 58. Removal, for example, by opening the fire hydrant valve and allowing water to flow, the hose 42 extending from the outer periphery of the drum due to the water flow can be pulled out and discharged toward the fire extinguishing target while being discharged.

  Also in this case, since the hose 42 shortened by contraction is stored, the rectangular drum 50 can be installed with a small space and light weight even on the back side of the fire hydrant door 18, and the fire hydrant door 18 is closed. In this case, the storage space on the housing 12 side in which the rectangular drum 50 is stored can be reduced, and the fire hydrant device 10 can be reduced in size and weight.

  Further, in storing the hose after stopping water discharge, the oval drum 50 is exposed on the back side of the open fire hydrant door 18, so that it is shortened by shortening to the oval drum 50 exposed to the outside. Since the hose 42 is rewound, the hose can be rewound more easily and easily than when the hose 42 is rewound in the housing 12.

[Hose storage structure with drum internal winding]
(Case housing structure)
FIG. 9 is an explanatory view showing another embodiment of a fire hydrant device that houses a hose in an inner drum in a housing.

  As shown in FIG. 9, in this embodiment, an inner drum 78 is arranged in a hose storage space in the housing 12. The inner drum 78 has a drum opening 80 formed on the front surface, and the hose 42 in a contracted state is drawn from the rear of the drum so as to be wound in a single roll, and the nozzle 54 attached to the tip of the hose 42 is inserted into the drum opening 80. It is detachably attached to a nozzle holder 58 disposed in a lateral direction away from the nozzle.

  As shown in FIG. 6, the inner winding drum 78 is circular or oval when viewed from the front, which is the front, and may be elliptical or a polygon more than a quadrangle. Further, the dimension when the inner winding drum 78 is, for example, oval may be a dimension corresponding to the oval drum 50 that winds the hose shown in FIG.

  According to such a hose housing structure using the inner drum 78, the hose is wound inside the inner drum 78 in a single state by opening the fire hydrant door 18 and opening the fire hydrant valve. When water is passed through 42, the hose 42 extends and moves toward the outside slowly from the drum opening 80 through the door opening 16 due to the force of spreading in the drum, and the hose 42 itself extends. Thus, it is possible to assist the user in pulling out the hose 42 and to facilitate the fire extinguishing activity by facilitating the routing of the hose 42 while discharging water.

  In addition, when the hose 42 is stored after the water discharge is stopped, the hose 42 that has been shortened by contraction is rewound to the inner side of the inner winding drum 78 so that it is long with a conventional fixed length hose. You don't need to be skilled enough to wrap the hose back into the hose compartment, and you can rewind the hose 42 to the inside of the drum neatly. It does not cause damage or damage due to the load.

(Storing structure behind the fire hydrant door)
FIG. 10 is an explanatory view showing another embodiment of a fire hydrant device that houses a hose in an inner drum provided on the back side of the fire hydrant door, and shows the fire hydrant door in an open state.

  As shown in FIG. 10, in this embodiment, an inner drum 78 is disposed on the back side of the fire hydrant door 18. The inner drum 78 has a drum opening 80 formed on the front surface, and the hose 42 in a contracted state is drawn from the rear of the drum so as to be wound in a single roll, and the nozzle 54 attached to the tip of the hose 42 is inserted into the drum opening 80. It is detachably attached to a holder 58 arranged in a lateral direction away from the head.

  As shown in FIG. 6, the inner winding drum 78 is circular or oval when viewed from the front, which is the front, and may be elliptical or a polygon more than a quadrangle. Further, when the inner winding drum 78 is, for example, an oval, the dimension may be a dimension corresponding to the oval drum 50 that performs the outer winding shown in FIG. 6B so that the longitudinal direction is the horizontal direction. Arranged behind the hydrant door 18.

  According to the hose housing structure in which such an inner winding drum 78 is arranged on the back side of the fire hydrant door 18, the fire hydrant valve 18 is opened and the fire hydrant valve is opened, so that 1 When water is passed through the hose 42 that is heavyly wound inside, the hose 42 is extended and the movement to extend autonomously slowly from the drum opening 80 to the outside through the door opening 16 due to the force of spreading in the drum. The extension of the hose 42 itself assists the user in pulling out the hose 42, facilitating the operation of the fire extinguishing operation by facilitating the routing of the hose 42 while discharging water.

  Further, when the hose 42 is stored after the water discharge is stopped, the hose 42 shortened by being shrunk is wound around the inner drum 78 provided on the fire hydrant door 18 exposed to the outside in a single layer. Because it is a work to return, the skill level is not required as in the case of returning the long hose with the conventional fixed length hose to the hose housing part, and the hose 42 can be rewinded neatly inside the drum. It can be rewound, and it does not wind up neatly, causing a load on the hose and not causing damage or damage. Further, since the hose 42 is rewound around the inner winding drum 78 exposed to the outside as compared with the case where it is provided in the housing 12, it can be rewound more easily and easily.

[Hose storage structure by drum reel]
(Case housing structure)
FIG. 11 is an explanatory view showing another embodiment of a fire hydrant device that houses a hose on a reel drum in a housing.

  As shown in FIG. 11, in this embodiment, a drum reel 82 is rotatably mounted on the shaft 85 of the rotary joint 84 in the hose storage space in the housing 12. The drum reel 82 is a nozzle holder in which the hose 42 in a contracted state is drawn from the rear rotary joint 84 and wound in a single outer winding on the outer periphery of the drum, and a nozzle 54 attached to the tip of the hose 42 is disposed in the drum opening. 58 is detachably mounted. An expansion hose 42 (which may be a diameter retaining hose) from a hose connection port (not shown) is connected to the rotary joint 84, and when the fire hydrant valve is opened, the hose 42 is wound around the drum reel 82 via the rotary joint 84 when the fire hydrant valve is opened. To supply.

  As shown in FIG. 6A, the drum reel 82 is circular when viewed from the front, which is the front, and the dimensions correspond to the oval drum 50 that winds the hose shown in FIG. 6B. The dimensions may be equivalent to a circular drum.

  According to such a hose storage structure using the drum reel 82, the fire hydrant door 18 is opened and the fire hydrant valve is opened, so that the hose 42 wound around the outer periphery of the drum reel 82 in a contracted state is wound on the hose 42. When the water passes, the hose 42 extends and spreads slowly and autonomously through the door opening 16 due to the force of spreading, and the hose 42 itself extends to assist the user in pulling out the hose 42. In addition, it is possible to facilitate the fire extinguishing work by facilitating the routing of the hose 42 while discharging water.

Further, when the hose 42 is stored after the water discharge is stopped, the hose 42 shortened by contraction is rewound to the outside of the drum hose 82. In this case, the drum reel 82 is fed while the hose 42 is being fed. Rotating and rewinding makes it possible to more easily and easily rewind the hose 42 around the drum.
(Storing structure behind the fire hydrant door)
FIG. 12 is an explanatory view showing another embodiment of a fire hydrant device that houses a hose in a reel drum in a housing, and shows a state in which a fire hydrant door is opened.

  As shown in FIG. 12, in this embodiment, a drum reel 82 is rotatably arranged with respect to the shaft 85 of the rotary joint 84 on the back side of the fire hydrant door 18. The drum reel 82 is a nozzle holder in which the hose 42 in a contracted state is drawn from the rear rotary joint 84 and wound in a single outer winding on the outer periphery of the drum, and a nozzle 54 attached to the tip of the hose 42 is disposed in the drum opening. 58 is detachably mounted. The rotary joint 84 is connected to an expansion / contraction hose 42 (or a diameter retaining hose) from a hose connection port (not shown), and when the fire hydrant valve is opened, the fire hose 42 is wound around the drum reel 82 via the rotary joint 84. To supply.

  As shown in FIG. 6A, the drum reel 82 has a circular shape when viewed from the front, which is the front surface, and has a dimension corresponding to the oval drum 50 having the outer winding shown in FIG. 6B. The dimensions may correspond to the drum.

  According to such a hose storage structure using the drum reel 82, the fire hydrant door 18 is opened and the fire hydrant valve is opened, so that the hose 42 wound around the outer periphery of the drum reel 82 in a contracted state is wound on the hose 42. When the water passes, the hose 42 expands and spreads, so that it slowly and autonomously extends to the outside. The hose 42 itself extends to assist the user in pulling out the hose 42, and the hose 42 while discharging water. It is possible to facilitate the fire extinguishing activities by facilitating the routing.

  In addition, when the hose 42 is stored after the water discharge is stopped, the hose 42 that has been shortened by shrinking is unwound to the outside of the drum reel 82. In this case, the drum reel 18 is opened by opening the fire hydrant door 18. 82 is exposed to the outside. By rotating and rewinding the drum reel 82 while feeding the hose, the work of rewinding the hose neatly around the outer periphery of the drum is further compared to the case where the drum reel is arranged in the housing. It is possible to carry out simply and easily.

[Hose storage structure with internal and external drums]
(Case housing structure)
FIG. 13 is an explanatory view showing another embodiment of a fire hydrant apparatus that enables both storage of a shrunken hose and storage of a hose expanded by passing water in a housing.

  As shown in FIG. 13, in the hose storage space of the housing 12, an inner drum 86 in which the hose 42 contracted in a no-load state that does not pass water is wound around the outer periphery in a single layer, and the outer periphery of the inner drum 86. An outer drum 88 that is disposed outside and surrounds the hose 42a that is extended by water passage is held inward.

  The inner drum 86 is the same as the oval drum 50 shown in FIG. 6B, and the nozzle 54 is detachably disposed on the front surface of the drum by a nozzle holder 58. The outer drum 88 is disposed so as to be integrated with the inner drum 86, for example, and forms a drum opening 90 in the front.

  FIG. 14 is an explanatory view showing an example of the relationship between dimensions by taking out the inner drum and the outer drum in FIG. As shown in FIG. 14, the inner drum 86 has the same dimensions as the oval drum 50 shown in FIG. 6 (B), and the hose 42 in a contracted state is wound around the outer periphery in a single layer. In this case, the hose 42 has an outer diameter of 2.1 cm and has 5 turns to accommodate 15 m.

  The outer drum 88 is an oval drum similar to the inner drum 86. The dimensions of the outer drum 88 are a semicircular portion having a double radius of 60 cm and a straight portion having the same 60 cm. The length is about 5 m, and the extended 30 m hose 42a can be accommodated in 6 turns. Therefore, the depth length is 25.2 cm because the outer diameter when expanded is 4.2 cm. The hose storage space 38 shown in FIG.

  In the hose storage structure in which the inner drum 86 and the outer drum 88 are arranged, the fire hydrant door 18 is opened and the fire hydrant valve is opened, so that the outer drum is wound around the outer side of the inner drum 86 in a contracted state. When water is passed through a hose 42 having an outer diameter of 2.1 cm and a length of 15 m, the hose 42 expands in an inner winding state with respect to the outer drum 88 so as to become a hose 42 a having an outer diameter of 4.2 cm and a length of 30 m, for example, Even if water is passed through the hose 42 which is contracted by opening the fire hydrant valve before the water discharge nozzle 54 is taken out, the hose 42 will not be extended and pushed out. For example, a place close to the fire hydrant device 10 When the fire is extinguished, it is possible to suppress unnecessary hose extrusion due to the hose extension and to draw out the extended hose 42a by a necessary length to perform appropriate fire fighting activities.

  The inner drum 86 and the outer drum 88 may be a circle, an ellipse, or a polygon more than a quadrangle other than an oval.

(Storing structure behind the fire hydrant door)
FIG. 15 is an explanatory view showing another embodiment of a fire hydrant device that enables both the storage of a contracted hose and the storage of a hose extended by passing water on the back side of the fire hydrant door, with the fire hydrant door opened. Show.

  As shown in FIG. 15, on the back side of the fire hydrant door 18, an inner drum 86 in which a hose 42 contracted in a no-load state that is not passing water is wound around the outer periphery in a single layer and an outer periphery of the inner drum 86 are surrounded. And an outer drum 88 that holds the hose 42a extended by water flow in an inner winding state.

  The inner drum 86 is the same as the oval drum 50 shown in FIG. 6 (B), and is arranged on the back side of the fire hydrant door 18 with the longitudinal direction being landscape, and the nozzle 54 is detachably attached to the front surface of the drum by a nozzle holder 58. Is arranged. The outer drum 88 is disposed so as to be integrated with the inner drum 86, for example, and forms a drum opening 90 in the front. Here, the dimensional relationship between the inner drum 86 and the outer drum 88 is the same as in the case of FIG.

  In the hose housing structure in which the inner drum 86 and the outer drum 88 are arranged on the back side of the fire hydrant door 18, the fire hydrant valve 18 is opened and the fire hydrant valve is opened, so that the outer drum 86 is outside the inner drum 86 in a contracted state. When water is passed through a hose 42 having an outer diameter of 2.1 cm and a length of 15 m which is wound on a single outer surface, the hose 42 is stretched so as to become a hose 42 a having an outer diameter of 4.2 cm and a length of 30 m with respect to the outer drum 88. For example, even if the fire hydrant valve is opened before the water discharge nozzle 54 is taken out and water is passed through the hose 42 that is contracted before the water discharge nozzle 54 is taken out, the hose 42 is not extended and pushed out. For example, when extinguishing a fire near the fire hydrant device 10, it is possible to suppress unnecessary hose extrusion due to the hose extension, and to draw out the extended hose 42 a by a necessary length to perform appropriate fire fighting activities. It makes it possible to carry out.

  Also in this case, the inner drum 86 and the outer drum 88 may be a circle, an ellipse, or a polygon more than a quadrangle other than an oval.

[Housing storage structure for storing a part of the extension hose and extending the rest to the outside]
(Case housing structure)
FIG. 16 is an explanatory view showing an embodiment of a fire hydrant device in which a hose housing structure for holding a part of the extended hose in the housing and extending the rest to the outside is provided in the housing.

  As shown in FIG. 16, the hose housing structure provided in the housing 12 is a structure in which an inner drum 86 and an outer drum 88 are arranged as in the embodiment of FIG. 13. W has a size capable of storing a part of the hose 42a extended by water flow, and the remaining extended hose 42a is pushed out and extended.

  The depth length W of the outer drum 88 is set to W = 16.8 cm, for example, in which 4 turns can be accommodated, for example, assuming that the number of turns for accommodating 30 m of the expanded hose 42a is 6 turns. The hose 42a having a length corresponding to the remaining two turns is pushed out and extended.

  According to such a hose storage structure, when the hose by water flow elongates, a part of the hose base side expands so as to be in an inner winding state with respect to the outer drum 88, while the remaining hose tip side is fire extinguishing water. It became a movement that extends autonomously with the passage of water, and by combining the expansion of the hose that passed through the casing 12 with the movement of the hose that extends autonomously, the advantages of both were utilized. Enable fire fighting activities.

(Fire hydrant door storage structure)
FIG. 17 is an explanatory view showing an embodiment of a fire hydrant device in which a hose housing structure for holding a part of the extended hose in the housing and extending the rest to the outside is provided on the back side of the fire hydrant door.

  As shown in FIG. 17, the hose housing structure housed on the back side of the fire hydrant door 18 is a structure in which an inner drum 86 and an outer drum 88 are arranged as in the embodiment of FIG. 15. The portion W of the hose 42a extended by water flow is set to be able to be accommodated, and the portion of the remaining extended hose 42a is pushed out and extended.

  The depth length W of the outer drum 88 is limited to W = 16.8 cm, in which, for example, four turns can be accommodated, for example, if the number of turns in which the 30 m of the expanded hose 42a is accommodated by internal winding is 6 turns. The hose 42a having a length corresponding to the remaining two turns is pushed out and extended.

  According to such a hose storage structure, when the hose by water flow elongates, a part of the hose base side expands so as to be in an inner winding state with respect to the outer drum 88, while the remaining hose tip side is fire extinguishing water. It became a movement that extends autonomously with the passage of water, and by combining the expansion of the hose that passed through the casing 12 with the movement of the hose that extends autonomously, the advantages of both were utilized. Enable fire fighting activities.

[Case storage structure with telescopic drum]
FIG. 18 is an explanatory view showing an embodiment of a fire hydrant device in which a hose housing structure in which a drum extends as the hose extends is provided in the housing, and FIG. 18 (A) shows a normal monitoring state in which no water is passed. FIG. 18 (B) shows a state in which the water is discharged and discharged.

  As shown in FIG. 18A, the hose housing structure provided in the housing 12 is provided with a movable drum 50B slidable in the axial direction on a fixed drum 50b fixed to the housing 12, and in a normal state. Then, the hose 42 in a contracted position where the movable drum 50a is pushed into the fixed drum 50b and contracted to the outer periphery of the movable drum 50a is wound around in a single layer.

  FIG. 18B shows a case where the hose 42a extends due to water passing through the opening operation of the fire hydrant valve opening / closing lever, and the movable drum 50a moves forward due to the force extending forward due to the extension of the hose 42a. When the movable drum 50a is moved to the position determined by, the hose 42 is assisted to extend forward, and the hose 42a can be pulled out smoothly.

  In the embodiment of FIG. 18, the hose is wound around a movable drum that is elastic in the axial direction, but the hose may be wound around a movable drum that is elastic in the axial direction.

[Modification of the present invention]
(Indoor fire hydrant)
The above embodiment is an example of a fire hydrant device for a tunnel, but it may be applied to an indoor fire hydrant device in which a fire hydrant door is arranged to be opened laterally (openable and closable sideways) at the opening on the front surface of the housing. . For example, since the hose length of the No. 1 fire hydrant and No. 2 fire hydrant using a shape-keeping hose is 15 m, when the present invention is applied, the hose length is 7.5 m which is half of the water without passing water. For example, when a circular drum having a radius of 0.3 m is arranged in the casing, the outer periphery is 3.14 m, so that the drum outer periphery is wound four times in a single turn. In the case of a circular drum, it is 8.4 cm if it is 1 cm, and it can be stored in the case of the fire hydrant No. 1 and No. 2 fire hydrants with length x width x depth of 1.00 m x 0.75 m x 0.18. Reduces the vertical dimension of the casing and, if an elliptical drum is used, reduces the horizontal dimension of the casing, and the casing of the indoor fire hydrant can be miniaturized as the hose storage space is reduced.

(Hose elongation ratio)
Moreover, although said embodiment has taken the case where the hose length extends 2 times by water flow as an example, the expansion ratio can be set to N times higher than that, and the hose storage space according to the magnification N Can be reduced to 1 / N to further reduce the size.

(Single hose storage structure)
In addition, the hose storage structure for storing the contracted hose is not limited to the above-described embodiment as long as it is a structure in which the hose is wound outwardly or internally, and includes an appropriate structure.

(Multiple hose storage structure)
In the above embodiment, a hose housing structure in which a hose is wound on a drum in a single outer winding or an inner winding is taken as an example. good. This multiple winding of the hose can shorten the drum depth and further reduce the hose storage space.

(Drum structure with pipe bar)
In addition, the drum structure of the above embodiment is a container structure having a circular, oval, elliptical, or polygonal end face shape that is equal to or greater than a quadrangle. However, the hose is formed by a bucket structure using a pipe bar (pipe frame). When the inner winding or the outer winding is performed, the hose winding shape may be a circular shape, an oval shape, an elliptical shape, or a polygonal hose winding shape.

(Remote operation of fire hydrant valve)
Moreover, although the said embodiment has taken the case where the fire hydrant valve operation lever is provided on the housing side as an example, the fire hydrant valve operation lever is provided on the back side of the fire hydrant door and the fire hydrant valve in the housing is remotely operated by cable connection. It may be a structure.

(Other)
The present invention includes appropriate modifications without impairing the object and advantages thereof, and is not limited by the numerical values shown in the above embodiments.

10: Fire hydrant device 12: Housing 16: Door opening 18: Fire hydrant door 36: Hose storage space 42: Hose 48: Fire hydrant valve opening / closing lever 50: Oval drum 50a: Fixed drum 50b: Movable drum 52: Hose connection port 54 : Nozzle 58: Nozzle holder 70: Circular drum 78: Inner winding drum 80: Drum opening 82: Drum reel 84: Rotary joint 86: Inner drum 88: Outer drum

Claims (12)

A box-shaped housing with a door opening on the front;
A fire hydrant door that is openably and closably supported at the door opening of the housing;
A hose with a retractable nozzle that shrinks to a predetermined outer diameter and length in a no-load state that is not passing water, and extends to a predetermined outer diameter and length that is required in a loaded state;
A hose storage structure for storing the hose contracted to a predetermined length in the housing or on the back side of the fire hydrant door so that the hose can be pulled out with the fire hydrant door open.
A fire hydrant device characterized by comprising:
The fire hydrant apparatus according to claim 1, wherein the hose housing structure includes a drum having a circular, oval, elliptical, or polygonal end face shape having a predetermined depth in the casing. Place the hose that has been shrunk to a predetermined length in a no-load state that is not passing water on the outer periphery of the drum, and wrap the hose outward in a loaded state that passes water. A fire hydrant device characterized by being made possible.
In the fire hydrant device according to claim 1,
In the hose storage structure, on the back side of the fire hydrant door, a circular drum having a predetermined depth length, an elliptical shape, an elliptical shape, or a polygonal end face shape of a quadrangle or more is disposed, and on the outer periphery of the drum, The hose that is shrunk to a predetermined length in a no-load state that does not pass water is wound in a single or multiple outer manner, and the tip side of the hose can be extended to the outside in a loaded state that passes water Fire hydrant device.
2. The fire hydrant apparatus according to claim 1, wherein the hose storage structure includes a drum having a circular end surface having a predetermined depth length, an elliptical shape, an elliptical shape, or a polygonal end face shape of a square or more. Then, the hose, which is shrunk to a predetermined length in a no-load state where water is not passed, is wound on the inner circumference of the drum in a single or multiple manner, and the tip end side of the hose is placed in a loaded state where the water is passed. A fire hydrant device characterized by being extensible to the outside.
In the fire hydrant device according to claim 1,
In the hose storage structure, a drum having a circular, oval, elliptical, or polygonal end face shape having a predetermined depth is disposed on the back side of the fire hydrant door, and is disposed on the inner periphery of the drum. The hose that is shrunk to a predetermined length in a no-load state that does not pass water is wound in a single or multiple, and the tip side of the hose can be extended to the outside in a loaded state that passes water. Features a fire hydrant device.
The fire hydrant apparatus according to any one of claims 2 to 5, wherein the drum has a reel structure that can be swung.
The fire hydrant device according to claim 1, wherein the hose storage structure is provided in the housing.
The hose which has a circular, oval, elliptical or polygonal end face shape with a predetermined depth length and is contracted to a predetermined length in a no-load state without passing water is arranged on the outer periphery. An inner drum that is externally wound in heavy or multiple, and
An outer drum that is disposed outside and surrounds the outer periphery of the inner drum, and holds the hose extending to a predetermined length in a loaded state in which water passes therethrough in an inner winding state;
A fire hydrant device characterized by the arrangement of
In the fire hydrant device according to claim 1,
The hose storage structure is on the back side of the fire hydrant door,
The hose which has a circular, elliptical or quadrangular or more polygonal end face shape with a predetermined depth length and is shrunk to a predetermined length in a no-load state where water does not pass is single or multiple on the outer periphery. An externally wound inner drum,
An outer drum that is disposed outside and surrounds the outer periphery of the inner drum, and holds the hose extending to a predetermined length in a loaded state in which water passes therethrough in an inner winding state;
A fire hydrant device characterized by the arrangement of
The fire hydrant device according to claim 1, wherein the hose storage structure is provided in the housing.
The hose which has a circular, elliptical or quadrangular or more polygonal end face shape with a predetermined depth length and is shrunk to a predetermined length in a no-load state where water does not pass is single or multiple on the outer periphery. An externally wound inner drum,
A part of the rear end side of the hose, which is disposed outside and surrounds the outer periphery of the inner drum and extends to a predetermined length in a state of passing water, is held inwardly while being inwardly wound, and the remaining front end side An outer drum that can be extended to the outside,
A fire hydrant device characterized by the arrangement of
In the fire hydrant device according to claim 1,
The hose storage structure is on the back side of the fire hydrant door,
The hose which has a circular, elliptical or quadrangular or more polygonal end face shape with a predetermined depth length and is shrunk to a predetermined length in a no-load state where water does not pass is single or multiple on the outer periphery. An externally wound inner drum,
A part of the rear end side of the hose, which is disposed outside and surrounds the outer periphery of the inner drum and extends to a predetermined length in a state of passing water, is held inwardly while being inwardly wound, and the remaining front end side An outer drum that can be extended to the outside,
A fire hydrant device characterized by the arrangement of
2. The fire hydrant apparatus according to claim 1, wherein the hose housing structure has a circular, oval, elliptical, or polygonal end face shape having a predetermined depth in the casing. And a movable drum is slidably disposed forwardly outside the fixed drum, and is contracted to a predetermined length in a no-load state where water is not passed through the outer periphery or inner periphery of the movable drum. A fire hydrant apparatus characterized in that the movable drum can be moved forward relative to the fixed drum as the hose is wound externally in a single or multiple manner and the hose is extended to the outside in a loaded state. .
The fire hydrant device according to claim 1, wherein the hose is:
A watertight layer formed of a first material that is provided on a water-permeable surface that is in direct contact with water, is stretchable by a predetermined elongation rate, and is impermeable to water;
A second material that is bonded or adhered to the outside of the watertight layer, is stretchable by an elongation equal to or less than the elongation of the watertight layer, and has a strength that can withstand the water pressure accompanying water flow. A cover layer formed with
A fire hydrant device characterized by comprising:

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