JP2020081066A - Fire hydrant device - Google Patents

Abstract

To provide a fire hydrant device equipped with a hydrant door with a large rotation angle that has achieved the reduction in thickness though a cylinder damper is provided.SOLUTION: A fire hydrant device 1 includes a housing 5 for accommodating a fire extinguishing hose 3, an opening 9 provided on a front panel 7 of the housing 5 for pulling out the fire extinguishing hose 3, a hydrant door 11 which is opened by being rotated downward with a lower side part of the opening 9 as a rotation shaft, and a damper mechanism 13 for slowing down the opening of the hydrant door 11. The damper mechanism 13 is composed of an oil damper 35, one end side of which is connected to the rear face of the hydrant door 11 through a link, and the other end side of which is rotatably connected to a structure (a side wall 18) inside the housing 5 above the one end side, the one end side protruding outside the housing from the opening when the hydrant door 11 is opened.SELECTED DRAWING: Figure 1

Description

The present invention relates to a fire hydrant device installed in, for example, a tunnel.

The fire hydrant device has a fire hose housed therein, and at the time of fire fighting activity, the fire hydrant door provided on the front panel of the housing is opened and the fire hose is pulled out.
As a fire hydrant door, for example, there is a fire hydrant door that rotates about 180° with its lower side as a rotation axis like the fire hydrant door of the fire hydrant device disclosed in Patent Document 1.

As described above, in Japanese Patent Application Laid-Open Publication No. 2004-187242, there is a description of a rotation mechanism of a fire hydrant door that pivotally opens downward by a large amount (for example, 90° or more) with the lower side as a rotation axis. An object of the present invention is to provide a fire hydrant device that is equipped with a cylinder damper to reduce the rotation speed of the fire hydrant door, reduce the work load, and suppress the occurrence of damage due to the collision of the fire hydrant door with the front panel. Yes.”
In order to achieve the above object, in Patent Document 1, one end of a cylinder damper is tiltably installed near a bottom portion below an opening in a housing, and the other end side is attached to a back surface of a fire hydrant door via a link. The structure that connects to the side is adopted.

JP-A-2014-68743

In order for the fire hydrant door to rotate largely, a stroke corresponding to that is required for the cylinder rod, and the tilt angle of the cylinder damper also increases accordingly.
In Patent Document 1, when the fire hydrant door is closed, the cylinder damper is tilted toward the inside of the housing (see FIG. 3 of Patent Document 1), and when the fire hydrant door is fully opened. The cylinder damper is in a substantially upright posture (see FIG. 5 of Patent Document 1).
Therefore, the cylinder damper tilts from the tilted state to the upright state as the fire hydrant door is opened and closed.

As described above, when the rotation angle of the fire hydrant door is large, the tilting range of the cylinder damper is large. However, Patent Document 1 is based on the idea that the cylinder damper is moved within the housing. Therefore, the depth of the housing is required to some extent in order to secure the operating range of the cylinder damper.

Recently, there has been an intention to reduce the thickness of the fire hydrant device.However, in the rotation mechanism of the fire hydrant door that has a cylinder damper and has a large rotation angle when opened, the tilting space of the cylinder damper must be secured in the housing. This was an obstacle to making the case thinner.

The present invention has been made to solve the above problems, and provides a fire hydrant device having a fire hydrant door with a large turning angle when opened, which is thin while achieving a cylinder damper. Has a purpose.

(1) A fire hydrant device according to the present invention comprises a housing for accommodating a fire hose, an opening provided on a front panel of the housing for pulling out the fire hose, and a lower side portion of the opening. A fire hydrant door that pivots downward as a pivot shaft and opens, and a damper mechanism that slows the opening of the fire hydrant door,
In the damper mechanism, one end side is connected to the back surface of the fire hydrant door via a link, and the other end side is rotatably connected to a structure inside the casing above the one end side. When opened, the one end side is configured by a cylinder damper protruding from the opening to the outside of the housing.

(2) Further, a casing for accommodating the fire extinguishing hose, an opening provided on the front panel of the casing for drawing out the fire extinguishing hose, and a lower side portion of the opening downward as a rotating shaft. A fire hydrant device comprising: a fire hydrant door that is rotated toward and opened, and a damper mechanism that slows the opening of the fire hydrant door,
The damper mechanism is
A first link whose one end is rotatably connected to the back surface of the fire hydrant door about an axis parallel to the rotation axis of the fire hydrant door;
One end is rotatably connected to a structure inside the housing about an axis parallel to the rotation axis of the fire hydrant door, and the other end is on the other end side of the first link to the rotation axis of the fire hydrant door. A second link rotatably connected about an axis parallel to
One end is connected to the other end side of the first link or the second link so as to be rotatable about an axis parallel to the rotation axis of the fire hydrant door, and the other end is from the one end of the structure inside the housing. Also, a cylinder damper rotatably connected about an axis parallel to the axis of rotation of the fire hydrant door is provided at the upper portion.

(3) Further, in the structure described in (2) above, the cylinder damper has a biasing means for biasing the cylinder rod in a direction in which the cylinder rod extends when the cylinder rod contracts,
With the fire hydrant door closed, the direction of the axis of the first link is set to the outside of the housing with respect to the rotation axis of the fire hydrant door, and the rotation fulcrum of the other end of the second link is It is characterized in that it is arranged on the outside of the housing with respect to a straight line connecting the rotation fulcrum on one end side of the second link and the rotation fulcrum on the other end of the cylinder damper.

In the present invention, one end of the damper mechanism is connected to the back surface of the fire hydrant door via a link, and the other end is rotatably connected to a structure inside the housing above the one end side. When the door is opened, the one end side is composed of a cylinder damper that protrudes from the opening of the front panel to the outside of the housing.Therefore, in a fire hydrant device having a fire hydrant door with a large turning angle, it is possible to reduce the thickness while providing the cylinder damper. Can be realized.

It is a front view of the fire hydrant apparatus which concerns on embodiment of this invention, Comprising: It is the figure which transparently showed the internal structure. It is a side view of the fire hydrant apparatus shown in FIG. 1, and is a view showing an internal structure as seen through. It is a figure explaining operation|movement of the fire hydrant door of the fire hydrant apparatus shown in FIG. 1, (a) has shown the state which closed the fire hydrant door, (b) has shown the state which fully opened the fire hydrant door. It is explanatory drawing of the internal structure of a cylinder damper. It is explanatory drawing of the structure of the damper mechanism which concerns on embodiment of this invention.

[Embodiment 1]
As shown in FIGS. 1 and 2, a fire hydrant device 1 according to the present embodiment is provided with a housing 5 for housing a fire extinguishing hose 3 and a front panel 7 of the housing 5 to pull out the fire extinguishing hose 3. An opening 9 for opening, a fire hydrant door 11 that is opened by pivoting the lower side of the opening 9 downward as a rotation axis, and a damper mechanism 13 that slows the opening of the fire hydrant door 11. It is a thing. In addition, although the fire hydrant door 11 of this embodiment is rotated by 160° or more, the rotation angle of the fire hydrant door of the present invention is not limited to this, and a fire hydrant door that is rotated by 90° or more is used. If applicable, it can be applied.
Hereinafter, each configuration will be described in detail.

<Case>
As shown in FIGS. 1 and 2, the housing 5 has a rectangular box shape, and the housing 5 is provided with a hose housing portion 15 for housing the inwardly wound fire hose 3. A piping system 17 having a maintenance valve and the like is provided on the right side of the hose storage portion 15.
The hose accommodating portion 15 is constituted by a space defined by a pair of side walls 18 that face each other from the upper surface of the inner wall of the housing 5 to the lower surface of the inner wall.
The front panel 7 of the housing 5 is provided with an opening 9 for drawing out the fire extinguishing hose 3, and a fire hydrant door 11 is provided in the opening 9.
As shown in FIG. 1, a fire extinguisher housing portion 21 for housing the fire extinguisher 19 is provided adjacent to the hose housing portion 15 in the housing 5.

<Fire hydrant door>
The fire hydrant door 11 has a horizontally long rectangular shape made of a plate-shaped metal plate, and is openably and closably attached to the opening 9 of the front panel 7 as described above.
The fire hydrant door 11 is provided with rotary shafts (hinge 23) at both ends of the lower side, and can be opened from the closed state of the opening 9 with the lower side as the rotary axis. In the fully opened state, as shown in FIG. The rotation angle is 160° or more (approximately 180° in this example).
Further, the fire hydrant door 11 is provided with a handle 24 which is operated when opened and a latch 26 which is retracted by the handle 24.

On the back side of the fire hydrant door 11, there are provided a nozzle fixing portion 27 for removably fixing the fire extinguishing nozzle 25 and a fire hydrant valve (not shown) provided in a fire extinguisher water supply line for supplying fire extinguishing water to the fire extinguishing hose 3. An operation lever 29 (fire hydrant valve operation unit) for opening and closing is provided.

<Damper mechanism>
The damper mechanism 13 includes a first link 31, a second link 33, and an oil damper 35 as a cylinder damper (see FIG. 3). It should be noted that although each rotation fulcrum (connection point) of the first link 31 and the second link 33 is rotatable about an axis parallel to the rotation axis of the fire hydrant door 11, the description will be redundant in the following description. In order to avoid becoming, it is simply described as rotatable.

One end of the first link 31 is rotatably connected to the back surface of the fire hydrant door 11, and the other end is rotatably connected to the tip of the cylinder rod 37 of the oil damper 35.
One end of the second link 33 is rotatably connected to the side wall 18 of the hose housing 15 which is a structure inside the housing, and the other end of the second link 33 is rotatably connected to the other end of the first link 31. There is.
In the oil damper 35, the tip end of the cylinder rod 37 is rotatably connected to the other ends of the first link 31 and the second link 33, and the other end is a side wall of the hose storage portion 15 which is a structure inside the housing 5. The cylinder 18 is rotatably connected to a portion above the tip end side of the cylinder rod 37.

The oil damper 35 is similar to that disclosed in Patent Document 1, and as shown in FIG. 4, a slidable piston 43 is disposed in a main body 41 filled with oil 39, A cylinder rod 37 is provided on the piston 43.
The inside of the main body 41 is defined by a piston 43 into a first oil chamber 45 and a second oil chamber 47. The piston 43 is provided with a first oil chamber 45 and a second oil chamber 47 so as to communicate with each other. One orifice 49 and a second orifice 51 having a larger diameter than the first orifice 49 are formed.

Further, a check valve 53 is arranged on the second oil chamber 47 side of the piston 43 so that the second orifice 51 can be opened and closed. The check valve 53 allows the oil 39 to flow from the first oil chamber 45 to the second oil chamber 47 via the second orifice 51, while the check valve 53 from the second oil chamber 47 to the first oil chamber 45. This is to prevent the inflow of the oil 39.
Further, a free piston 55 is arranged so as to slide inside the main body 41 so as to define the first oil chamber 45 opposite to the piston 43. The high-pressure gas 57 as a biasing means is filled in the free piston 55 on the side opposite to the first oil chamber 45.

When the cylinder rod 37 extends, the movement of the piston 43 pressurizes the oil 39 in the second oil chamber 47. Therefore, the check valve 53 is closed, the oil 39 in the second oil chamber 47 flows into the first oil chamber 45 via the first orifice 49, and the piston 43 gradually moves to the second oil chamber 47 side. As a result, the cylinder rod 37 extends at a low speed, and the fire hydrant door 11 is opened slowly.

When the cylinder rod 37 retracts, the piston 39 moves to pressurize the oil 39 in the first oil chamber 45. Therefore, the check valve 53 opens, the oil 39 in the first oil chamber 45 mainly flows into the second oil chamber 47 via the large-diameter second orifice 51, and the piston 43 moves to the first oil chamber 45 side. Move gradually. As a result, the cylinder rod 37 contracts at a speed higher than the expansion speed, and the fire hydrant door 11 is closed with a light force.

The high-pressure gas 57 filled on the opposite side of the free piston 55 from the first oil chamber 45 applies pressure to the oil 39 in the first oil chamber 45. The high-pressure gas 57 functions as a biasing unit that biases the cylinder rod 37 in the extending direction when the cylinder rod 37 contracts.

The effect of the fire hydrant door 11 of the fire hydrant device 1 of the present embodiment configured as described above when the fire hydrant door 11 is opened and closed will be described.
When the fire hydrant door 11 is closed, as shown in FIG. 3A, the oil damper 35 is housed in the housing 5 in a substantially vertical state with the retracted cylinder rod 37 facing downward. At this time, as shown in FIG. 3A, the first link 31 and the second link 33 are in an inverted V-shape with their height positions on one end side being substantially the same.

From the state of FIG. 3A, when the opening operation is started by the handle 24 of the fire hydrant door 11 and the latch 26 is released, the fire hydrant door 11 tries to rotate by its own weight, but due to the action of the oil damper 35 described above, Even if it is not supported by the operator, it is opened at a slow speed and the fully opened state shown in FIG.

In the fully opened state, the oil damper 35, in which the cylinder rod 37 extends, is inclined in a direction in which the cylinder rod 37 projects from the opening 9 of the housing 5.
That is, the oil damper 35 tilts in the direction in which the cylinder rod 37 projects from the opening 9 from the closed state of the fire hydrant door 11 to the fully opened state, and in the fully opened state, the tip of the cylinder rod 37 opens. 9 is the most protruding state.

As described above, the opening and closing of the fire hydrant door 11 is accompanied by the tilting motion of the oil damper 35, which is similar to that of Patent Document 1, but in the present embodiment, the base end side of the oil damper 35 is a casing. Since the cylinder rod 37 is rotatably installed in the body 5 at a position higher than the tip of the cylinder rod 37, the cylinder rod 37 side projects from the opening 9 of the housing 5 when the oil damper 35 tilts. The housing 5 does not require a large space for absorbing the tilting range. As a result, it is not necessary to secure a space in the housing 5 for allowing the tilting of the oil damper 35, whereby the housing 5 can be made thin.

[Embodiment 2]
In the case of the fire hydrant device 1 of the present invention including the fire hydrant door 11 that opens downward with the lower side as the rotation axis, if the oil damper 35 is not provided, a latch (not shown) is opened when the fire hydrant door 11 is opened. If you remove and move the upper side a little forward, it is dangerous because the fire hydrant door 11 opens vigorously under its own weight.
The oil damper 35 slows down the opening operation of the fire hydrant door 11 to prevent danger when the fire hydrant door 11 is opened, even if the operator does not support it.
In this sense, it can be said that it is not necessary to strictly define the positional relationship among the first link 31, the second link 33, and the oil damper 35.

However, at the start of the operation, if the operator releases the latch 26, the fire hydrant door 11 automatically opens without the operator having to pull the upper side toward the front to open the fire hydrant door 11. Is more preferable in terms of operation.
Therefore, in the present embodiment, the fire hydrant device 1 having the damper mechanism 13 that enables such an operation will be described.

The arrangement relationship of the first link 31, the second link 33, and the oil damper 35 for enabling the above operation will be described with reference to FIG.
FIG. 5 shows the positional relationship between the first link 31, the second link 33, and the oil damper 35 when the fire hydrant door 11 is closed (FIG. 3(a)), where a is the pivot point of the fire hydrant door 11. b is a fulcrum of rotation on one end side of the first link 31 (a connection end side with the fire hydrant door 11), c is the other end side of the first link 31, the second link 33, and the tip end of the cylinder rod 37 of the oil damper 35. A rotation fulcrum, d is a rotation fulcrum on one end side of the second link 33 (side wall 18 of the hose storage portion 15), and e is another end side of the main body 41 of the oil damper 35 (side wall 18 side of the hose storage portion 15). Is the rotation fulcrum of.

In the damper mechanism 13 of the present embodiment, as shown in FIGS. 5A and 5B, when the fire hydrant door 11 is closed, the axis of the first link 31 (straight line bc) is oriented toward the fire hydrant door 11. The rotation fulcrum (point c) at the other end of the second link 33, which is set in the housing outer direction (left direction in the figure) with respect to the moving axis (the axis orthogonal to the plane of the drawing passing through the point a), is the second link. It is arranged in the outer side of the housing with respect to a straight line (straight line de) connecting the rotation fulcrum (point d) on one end side of 33 and the rotation fulcrum (point e) on the other end of oil damper 35.

As shown in FIG. 4, the oil damper 35 is filled with high-pressure gas 57 as a biasing means for biasing the cylinder rod 37 in the extending direction, so that the fire hydrant door 11 is closed and the cylinder rod 37 is retracted. In this state, the cylinder rod 37 is always urged in the extension direction.
In this state, when the operator removes the latch 26 to open the fire hydrant door 11, a force acts in the direction in which the cylinder rod 37 extends. At this time, if the positional relationship among the first link 31, the second link 33, and the oil damper 35 is in the relationship described above (see FIGS. 5A and 5B), the extension of the cylinder rod 37 causes the first link 31 and the first link 31 to move. The direction of the force acting on the second link 33 matches the direction of opening the fire hydrant door 11. Therefore, when the latch of the fire hydrant door 11 is released, the rod is extended due to the action of the high-pressure gas 57, and the opening is automatically started even if the operator does not perform the opening operation. After that, by the action of the oil damper 35. The opening operation will be slow.

On the other hand, when the positional relationship among the first link 31, the second link 33, and the oil damper 35 does not satisfy the above-described relationship, for example, as shown in FIG. 5C, the direction of the axis line (straight line bc) of the first link 31 is When it is set in the housing inward direction (rightward in the figure) with respect to the rotation axis of the fire hydrant door 11 (the axis orthogonal to the plane of the drawing that passes through the point a), or as shown in FIG. A rotation fulcrum (point c) at the other end of 33 connects a rotation fulcrum (point d) at one end of the second link 33 and a rotation fulcrum (point e) at the other end of the oil damper 35 (a straight line de). ), the direction of the force acting on the first link 31 and the second link 33 due to the extension of the cylinder rod 37 is the direction of closing the fire hydrant door 11. The extension operation of the cylinder rod 37 by the high pressure gas 57 cannot be used to open the fire hydrant door 11.
However, in this case, the operator can open the fire hydrant door 11 by guiding the door in the opening direction after releasing the latch.

As described above, according to the present embodiment, the arrangement relationship among the first link 31, the second link 33, and the oil damper 35 is set as shown in FIGS. When the operator starts to open the fire hydrant, if the operator only releases the latch 26 of the fire hydrant door 11, the fire hydrant door 11 will not be opened by the operator due to the extension of the rod by the action of the high pressure gas 57 in the oil damper 35. Since the opening of the fire hydrant door 11 starts automatically, the opening operation of the fire hydrant door 11 becomes smoother.

Although the oil damper 35 is illustrated as an example of the cylinder damper in the above-described embodiment, the cylinder damper does not use a fluid other than oil or resistance by a fluid such as oil. It may be one that utilizes frictional resistance.

Further, in the above-described embodiment, an example is shown in which the tip end of the cylinder rod 37 and the rotation fulcrum of the other ends of the first link 31 and the second link 33 are the same, but the present invention is not limited to this. Alternatively, the other end of the first link 31 may extend beyond the connection position with the second link 33, and the tip of the cylinder rod 37 may be rotatably connected to the extended portion, or The other end of the link 33 may be extended beyond the connection position with the first link 31, and the tip of the cylinder rod 37 may be rotatably connected to the extended portion.

In the above example, the damper mechanism 13 has been described by exemplifying the first link 31 and the second link 33 as the links connecting the cylinder rod 37 of the oil damper 35 and the fire hydrant door 11, but the damper according to the present invention. The mechanism is not limited to this, and one end side is connected to the back surface of the fire hydrant door 11 via a link, and the other end side is rotatably connected to a structure inside the housing above the one end side. It can also be configured with a cylinder damper.

1 Fire Hydrant Device 3 Fire Hose 5 Case 7 Front Panel 9 Opening 11 Fire Hydrant Door 13 Damper Mechanism 15 Hose Storage 17 Pipe System 18 Sidewall 19 Fire Extinguisher 21 Fire Extinguisher Storage 23 Hinge 24 Handle 25 Fire Extinguishing Nozzle 26 Latch 27 Nozzle Fixed part 29 Operation lever 31 First link 33 Second link 35 Oil damper 37 Cylinder rod 39 Oil 41 Main body 43 Piston 45 First oil chamber 47 Second oil chamber 49 First orifice 51 Second orifice 53 Check valve 55 Free piston 57 high pressure gas

Claims (3)

A housing for accommodating the fire-extinguishing hose, an opening provided on the front panel of the housing for pulling out the fire-extinguishing hose, and rotated downward with the lower side of the opening as a rotation axis. A fire hydrant device comprising: a fire hydrant door that is opened by opening a damper mechanism that slows the opening of the fire hydrant door,
In the damper mechanism, one end side is connected to the back surface of the fire hydrant door via a link, and the other end side is rotatably connected to a structure inside the casing above the one end side. A fire hydrant device, characterized in that, when opened, the one end side is constituted by a cylinder damper protruding from the opening to the outside of the housing. A housing for accommodating the fire-extinguishing hose, an opening provided on the front panel of the housing for pulling out the fire-extinguishing hose, and rotated downward with the lower side of the opening as a rotation axis. A fire hydrant device comprising: a fire hydrant door that is opened by opening a damper mechanism that slows the opening of the fire hydrant door,
The damper mechanism is
A first link whose one end is rotatably connected to the back surface of the fire hydrant door about an axis parallel to the rotation axis of the fire hydrant door;
One end is rotatably connected to a structure inside the housing about an axis parallel to the rotation axis of the fire hydrant door, and the other end is on the other end side of the first link to the rotation axis of the fire hydrant door. A second link rotatably connected about an axis parallel to
One end is connected to the other end side of the first link or the second link so as to be rotatable about an axis parallel to the rotation axis of the fire hydrant door, and the other end is from the one end of the structure inside the housing. A fire hydrant device, further comprising a cylinder damper rotatably connected to an upper portion of the fire hydrant door about an axis parallel to the rotation axis of the fire hydrant door. The cylinder damper has an urging means for urging the cylinder rod in an extending direction when the cylinder rod contracts,
With the fire hydrant door closed, the direction of the axis of the first link is set to the outside of the housing with respect to the rotation axis of the fire hydrant door, and the rotation fulcrum of the other end of the second link is 3. The fire hydrant device according to claim 2, wherein the fire hydrant device is arranged outside a housing with respect to a straight line connecting a rotation fulcrum on one end side of the second link and a rotation fulcrum on the other end of the cylinder damper.

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