JP2001204844A - Fire hydrant device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire hydrant device having improved operability by allowing slight pull-out of a hose, and offering a smaller size by reducing the size of a hose. SOLUTION: A joint is fixed by holding the hose between a band forcibly expanded at the inside of the hose and an outer cylinder for receiving the band and the inner diameter of the band is almost completely connected to the inner diameter of the hose. Therefore, the joint of the hose is free from bottle neck formation, the size of the hose is reduced, the operability of the hose is improved during extinguishing work and a smaller space is required during storing the hose.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire hydrant device.

[0002]

2. Description of the Related Art In recent years, a hose capable of maintaining a circular cross section has been used for a fire hydrant device, and water can be passed even when the hose is stored in the fire hydrant device. When a fire occurs, the hose is connected to the end of the hose. By holding the fire extinguishing nozzle and opening the fire hydrant valve, it is possible to run to the site.

[0003]

When using the shape-retaining hose as described above, when the fire-extinguishing water is filled compared to when the inside of the hose is empty, the weight is felt.
In a tunnel, the longer the hose is pulled, the stronger it must be pulled, even on a paved road surface.

Normally, a hose having an inner diameter of 40 mm is used as a shape retaining hose of a fire hydrant device for a tunnel. However, since the weight of fire extinguishing water is effective for pulling the hose, it is required to make the hose thin and light. I have. Here, the inner diameter of the hose is related to the flow rate because it is necessary to send out the amount of water necessary for fire fighting, but it cannot be easily made thinner. Further, as a joint provided at the end of the conventional shape retaining hose, a so-called bamboo shoot type joint 41p as shown in FIG.
is inserted, and the hose 104 is pressed and clamped against the resistance surface of the outer periphery of the cylindrical body 42p using the band 43p, and the joint 41p acts as a bottleneck, resulting in a large pressure loss, and The 42p inner diameter Dj2 was to substantially limit the flow rate of the hose 104.

Accordingly, an object of the present invention is to improve the operability by allowing the hose to be pulled out lightly and to reduce the size of the fire hydrant apparatus by making the hose thinner.

[0006]

In view of the above, a first aspect of the present invention relates to a fire hydrant apparatus in which a hose having a nozzle is housed in a housing having a door on the front surface and fire water is supplied to the nozzle. Inside the housing, one end is connected to a water supply pipe, an internal pipe is provided with a fire hydrant valve and the other end is connected to a hose, and the end of the hose is connected to a connection part of the internal pipe. The joint is fixed by sandwiching the hose between a band that expands from the inside of the hose and an outer cylinder that receives the band, and the inner diameter of the band and the inner diameter of the hose are connected almost identically. It is characterized by doing.

Therefore, the hose can be made thinner by setting the inner diameter of the hose as the inner diameter required for the amount of water to be directly fed, without the hose joint becoming a bottleneck unlike the related art.
The operability of the hose is improved during the fire fighting activity, and the space for storing the hose is reduced, so that the entire fire hydrant device can be downsized.

According to a second aspect of the present invention, in a fire hydrant device in which a hose having a nozzle is housed in a housing having a door on the front surface and fire water is supplied to the nozzle, the inner diameter of the hose is set to 30 mm to 38 mm. It is characterized by the following.

As described above, by making the hose thinner than the conventional hose, the operability of the hose is improved during a fire extinguishing activity, and the space for storing the hose is reduced, so that the entire fire hydrant device can be downsized.

Further, as a third invention, in a fire hydrant device in which a hose having a nozzle is housed in a housing having a door body on the front surface and fire water is supplied to the nozzle, frictional resistance is reduced on an outer peripheral surface of the hose. It is characterized in that it is subjected to a process to make it.

As described above, the outer peripheral surface of the hose is subjected to a process of reducing frictional resistance, in particular, a process of forming a protective resin layer such as Teflon on the surface thereof, so that a force when the hose is pulled on a road surface or the like is reduced. It is reduced, and it is possible to rush to the site immediately with the nozzle in an emergency.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows the entire fire hydrant apparatus, and FIG. 2 shows a cross section of a hose joint used therein. In the figure, a fire hydrant device 100 is a so-called inner wrap type fire hydrant device in which a fire hose is housed in an inner wrap. The fire hydrant device 100 is installed, for example, on an inspection road adjacent to a roadway in a tunnel, or buried in an inner wall of a tunnel.

In such a fire hydrant device 100, a hose 104 having a fire extinguishing nozzle 30 at the tip thereof, a hose accommodating portion 105 for accommodating the hose 104 in an inner winding, a fire extinguishing water supply pipe are provided in a housing 101 thereof. The fire extinguishing water supply pipe 106 as an internal pipe is provided with a three-way switching valve 107, a pressure regulating valve 108, a fire hydrant valve 109, a fire hydrant hydrant 110, and the like. A connection port with a water supply pipe (not shown) is provided at the base end side of the pipe 106.

An opening 105 a for drawing out the hose 104 from the inside of the hose storage section 105 and for storing the hose 104 in the hose storage section 105 is provided on the front surface of the hose storage section 105. On the front surface of the housing 101, an opening 105a of the hose storage portion 105 is provided.
A front opening 101a is provided to be exposed outside.

The hose 104 has a length of 30 m as a standard, and is mainly made of a so-called fiber cylindrical woven fabric, and has a rubber-lined lining inside, and a Teflon with a smooth surface. By processing, durability and wear resistance are imparted, and at the same time, the friction coefficient is reduced. The Teflon layer has a significantly lower coefficient of friction than a hose whose cloth or rubber is exposed on the surface, and the effect is exerted as the length of the Teflon layer needs to be extended. This Teflon processing is performed by spray coating or the like on the surface of the hose 104, but may be coating by sticking a film or the like. Further, a material having a small friction coefficient other than Teflon may be selected. Further, the main hose may be a cloth alone or a rubber hose.

The hose 104 has an inner diameter of 30 m.
For example, 38 mm from 38 m to 38 mm is used, and it is thinner than the conventional one, so the weight of water is reduced by the square of the inner diameter ratio, and when this is compared with the frictional force, it is further proportional to the weight of water. The pulling force is reduced, and the operability as a fire hydrant device is improved. Further, the space of the hose storage section 105 for storing such a hose 104 can be made smaller than in the related art.

FIG. 2 shows an end of such a hose 104.
Is provided, and the connection of the joint 41 is as follows.
First, the hose 104 is inserted into the outer cylinder 42 having an inner diameter slightly larger than the outer diameter of the hose 104, and then the band 4 is inserted inside the outer cylinder 42 inside the hose 104.
3 is further inserted. The band 43 is spread outward from the inside by means of a device not described in detail. At this time, the hose 104 is sandwiched between the outer cylinder 42 and the band 43, and the hose 104 and the joint 41 are prevented from being detached by the friction surface provided on the inner surface of the outer cylinder 42.

By using such a so-called expansion joint 41, the inner diameter Dj of the joint 41 can be reduced.
1 and the inner diameter Dh1 of the hose 104 can be made equal. Therefore, with the conventional joint 41p, the hose 104
The inner diameter Dj2 of the tubular body 42p does not become thinner than the inner diameter Dh2 of the cylindrical body 42, and a bottleneck of a pressure loss that limits the flow rate at the joint 41 does not occur. The inner diameter of the hose 104 itself can be reduced accordingly.

Although not shown in detail, the joint 41 is connected to a receiving portion (not shown) provided at one end of a pipe 106 provided with a fire hydrant valve 109 and the like in the housing 101, and is also connected to the other end of the hose 104. A joint of the same type is provided and connected to the nozzle 30.

The hose storage section 105 is provided with the hose bucket 1
12 are formed. This hose bucket 112
Are two rods 113 extending from the upper surface of the inner wall of the housing 101 to the lower surface of the inner wall, and two strips 114 bent in a substantially L shape from the two rods 113 to the rear surface of the inner wall of the housing 101; And an opening 105a is formed between the two rods 113. In addition, this hose bucket 112
Corner opening portions 113a are provided at four corners between the strips 114 and the upper surface of the inner wall and the lower surface of the inner wall of the housing 101. As described above, by using the inner wall of the housing 101 for the hose bucket 112, the size of the hose storage unit 105 can be reduced as compared with the case where the hose storage unit 105 is formed inside the housing 101 by a box shape. The fire hydrant device 100 can be reduced in size as a result, and the opening 1
When the hose 104 is stored in the hose bucket 112 from 05a, it is possible to visually confirm how the hose 104 is wound from the corner opening 113a. Since the hand can be put inside and the hose 104 can be pushed in and trimmed, it is easy to wind the hose 104 neatly.

The housing 101 has a front opening 101a.
Front door 6 whose upper edge side is opened forward with the lower edge of the front opening 101a as a fulcrum.
Is provided. The front tilting door 6 is provided with, for example, a stopper so as to stop at a substantially horizontal position in the open state, and a damping mechanism or the like is provided with a buffer mechanism for the opening operation.

The forward tilting door 6 has a door built-in mechanism 6a inside.
And a back plate 7 that covers the door built-in mechanism 6a.
Is provided on the back surface 6b side of the forward tilting door 6. The door built-in mechanism 6a includes, for example, a latch mechanism (not shown) for opening and closing the forward tilting door 6, and a mechanism for transmitting power of the opening / closing lever 10 as an opening mechanism for the fire hydrant valve 109.
A storage recess 8 is provided on the back surface 6b side of the forward tilting door 6 at a position facing the opening 105a of the hose storage portion 105 when the forward tilting door 6 is closed.
In addition to holding the nozzle 30 inside, the slack portion 104b of the hose 104 can be stored. Thereby, the nozzle 30 is located between the forward tilting door 6 and the hose storage portion 105.
It is not necessary to provide a large gap because there is no risk of the hose 104 being pinched.

The nozzle 30 has a straight cylindrical body 31 having a water outlet at its tip, and a hose 104 at the base 32b.
-Shaped cylindrical body 32 to which the distal end connecting portion 104a is connected.
And a rotating connection part 33 rotatably connected in the circumferential direction between the cylindrical bodies 31 and 32, and a grip part 38 projecting substantially vertically from the cylindrical body 31 for operability. The nozzle 30 is turned laterally along the upper side with respect to the forward tilting door 6, supported by the nozzle support 103, and housed in the housing recess 8. At this time, the base portion 32b of the cylindrical body 32 can be directed to the opening 105a of the hose storage portion 105 by the rotation connection portion 33, so that the slack portion 104b of the hose 104 does not need to be largely bent. The fire hydrant device 100 can be reduced in size by the overall arrangement without restricting the installation position of the support portion 103.

As described above, according to the first aspect of the present invention, a hose having a nozzle is housed in a housing having a door on the front surface.
In a fire hydrant device for supplying fire water to a nozzle, in a housing, one end is connected to a water supply pipe, an internal pipe is provided with a fire hydrant valve or the like and the other end is connected to a hose. A joint is provided to be connected to the connection portion of the internal pipe, and the joint is fixed by sandwiching the hose between a band that expands from the inside of the hose and an outer cylinder that receives the band, and an inner diameter of the band. And the inner diameter of the hose are connected almost identically, so that the hose joint does not become a bottleneck as in the past, the hose can be made thinner, and the operability of the hose during fire fighting activities improves,
Since the space is reduced when storing the hose, the entire fire hydrant device can be reduced in size.

According to a second aspect of the present invention, there is provided a fire hydrant device in which a hose having a nozzle is housed in a housing having a door on the front surface and fire water is supplied to the nozzle, wherein the inner diameter of the hose is from 30 mm to 38 mm. By making the hose thinner than the conventional hose, the operability of the hose is improved during the fire fighting activity, and the space for storing the hose is reduced, so that the entire fire hydrant device can be downsized.

According to a third aspect of the present invention, in a fire hydrant device in which a hose having a nozzle is housed in a housing having a door on the front surface and fire water is supplied to the nozzle, frictional resistance is reduced on an outer peripheral surface of the hose. By performing a process to form a protective resin layer such as Teflon on the surface, the force when pulling the hose on the road surface etc. is reduced, and it is possible to immediately rush to the site with the nozzle in an emergency in case of holding the nozzle it can.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a fire hydrant device utilizing the present invention.

FIG. 2 is a schematic sectional view showing a joint of the hose of FIG. 1;

FIG. 3 is a schematic sectional view showing a conventional hose joint.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 Fire hydrant device 104 Hose 30 Nozzle 41 Joint 42 Outer cylinder 43 Band

Claims (5)

[Claims] 1. A fire hydrant device in which a hose having a nozzle is housed in a housing having a door body on the front surface and fire water is supplied to the nozzle, wherein one end of the fire hydrant is connected to a water supply pipe in the housing. An internal pipe having a valve or the like and the other end connected to the hose is provided, and an end of the hose is provided with a joint coupled to a connection portion of the internal pipe. A fire hydrant, wherein the hose is fixed by sandwiching the hose between a band extending from the inside of the hose and an outer cylinder receiving the band, and the inner diameter of the band and the inner diameter of the hose are connected substantially identically. apparatus. 2. The fire hydrant device according to claim 1, wherein the inner diameter of the hose is 30 mm to 38 mm. 3. A fire hydrant device, in which a hose having a nozzle is housed in a housing having a door body on the front surface and fire water is supplied to the nozzle, wherein the inner diameter of the hose is 30 mm to 38 mm. Fire hydrant equipment. 4. The fire hydrant device according to claim 2, wherein the outer peripheral surface of the hose is processed to reduce frictional resistance. 5. A fire hydrant device, in which a hose having a nozzle is housed in a housing having a door body on a front surface thereof, and fire-extinguishing water is supplied to the nozzle, the outer peripheral surface of the hose is processed to reduce frictional resistance. A fire hydrant device characterized in that: