JPH061716Y2 - Fire hydrant device - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to an improvement of a fire hydrant device using a hose reel installed on a wall of a building or a tunnel, and the like. The present invention relates to a fire hydrant device capable of automatically opening a fire hydrant valve by utilizing the rotation of the.

(Prior Art) In general, a fire hydrant device that uses a hose reel can stretch a hose quickly and smoothly in an emergency as compared with a fire hydrant device that uses a comb-shaped hose hook, so that fire protection in a tunnel can be prevented. It is widely used in equipment (see, for example, Japanese Utility Model Publication No. 60-10595).

That is, the fire hydrant device, in the fire hydrant box, a hose reel around which a hose is wound is rotatably disposed, and the proximal end of the hose is connected to a fire hydrant valve disposed in the fire hydrant box.
The hose is configured by connecting a nozzle to the tip of the hose, and when the hose is pulled while the fire or the like occurs, the hose is stretched quickly and smoothly by the rotation of the hose reel.

(Problems to be solved by the invention) However, it is said that the fire hydrant device, when extinguishing work, opens the fire hydrant valve and then stretches the hose, or stretches the hose and then opens the fire hydrant valve. There has been a problem that a stepwise operation is required and quick water discharge cannot be performed.

In particular, when water is discharged by one person and the hose is stretched first, it is necessary to fold it back to the fire hydrant box while holding the nozzle at the end of the hose and open the fire hydrant valve. This is because if the valve is opened with the nozzle free, the water pressure will cause the nozzle to spring up, causing damage to the nozzle. Therefore, in such a case, it takes much time and effort to discharge water.

The present invention was created in order to solve the above problems, and the purpose thereof is to automatically open the fire hydrant valve when the hose is stretched, so that one operator can quickly and reliably perform one rich operation. It is an object of the present invention to provide a fire hydrant device capable of discharging water.

(Means for Solving the Problems) In order to achieve the above object, a fire hydrant device according to the present invention includes a reel shaft having a passage, a hose reel rotatably supported by the reel shaft, and a hose reel. Wound around,
A hose whose base end is connected to the passage of the reel shaft and a passage provided in the reel shaft, which opens and closes a passage communicating with the passage of the reel shaft by rotation of the valve rod, and the axis of the valve rod is the shaft of the reel shaft. A fire hydrant valve orthogonal to the core, a direction changing mechanism that changes the rotation of the hose reel into a rotation around the axis of the valve rod of the fire hydrant valve, and is provided between the direction changing mechanism and the valve rod of the fire hydrant valve,
A clutch mechanism is provided which transmits the rotation from the direction changing mechanism to the valve rod and does not transmit the rotation from the direction changing mechanism to the valve rod when the fire hydrant valve is fully opened and closed.

(Operation) When not in use, the hose is wound on the hose reel and the fire hydrant valve is fully closed.

When an operator pulls the hose by holding the nozzle and the tip of the hose in the event of a fire, the hose reel rotates in the direction to feed the hose, and this rotation is transmitted to the valve stem of the fire hydrant valve by the direction changing mechanism and the clutch mechanism. The fire hydrant valve is automatically opened. As a result, one operator can simultaneously extend the hose and open the fire hydrant valve, which enables quick and reliable water discharge.

On the other hand, when the hose reel is rotated backward after use and the hose is wound around it, the rotation of the hose reel is transmitted to the valve stem of the fire hydrant valve by the direction changing mechanism and the clutch mechanism, and the fire hydrant valve is automatically closed. To be done.

The clutch mechanism does not transmit the rotation of the hose reel to the valve rod of the fire hydrant valve when the fire hydrant valve is fully opened and closed.
Even if the fire hydrant valve is fully opened or fully closed, the hose reel can be continuously rotated.

(Example) Hereinafter, the Example of this invention is described in detail based on drawing.

1 to 3 show a fire hydrant device according to an embodiment of the present invention. The fire hydrant device includes a reel shaft 1, a hose reel 2, a hose 3, a fire hydrant valve 4, a direction changing mechanism 5, a Kutch mechanism 6 and the like. And is attached to a wall surface of a building or the like via a bracket 7.

The reel shaft 1 has a passage through which a fluid passes,
It is arranged horizontally. A hose reel 2 having a pair of side plates 2a is supported on the reel shaft 1 so as to be rotatable and immovable in the axial direction.

The hose 3 is wound around the hose reel 2,
The base end portion is connected to the passage of the reel shaft 1 via the rotary joint 8, and the water discharge nozzle 9 is connected to the tip end portion.

The fire hydrant valve 4 is provided on the reel shaft 1 so that the axis of the valve rod 10 is orthogonal to the axis of the reel shaft 1.
The passage 11 communicating with the passage of the reel shaft 1 can be opened and closed by rotating 0.

Specifically, as shown in FIGS. 2 and 3, the fire hydrant valve 4 is provided continuously with the reel shaft 1 and a passage 11 communicating with the passage of the reel shaft 1 and a valve formed in the passage 11. A valve box 13 provided with a seat 12 and the like, and the valve box 13 is movably screwed in a direction (vertical direction) orthogonal to the axis of the reel shaft 1 so that the upper end side protrudes outside the valve box 13 and the lower end side. Valve stem 10 having a recess 14 formed therein, and compression spring 1 in recess 14 of valve stem 10.
The valve body 16 is inserted through the valve seat 5 and comes into contact with the valve seat 12. The valve body 10 is moved up and down when the valve rod 10 is rotated normally and reversely, so that the valve body 16 comes into contact with the valve seat 12. Sit down, channel 1
It is designed to open and close 1. Further, the downward movement of the valve rod 10 of the fire hydrant valve 4 is regulated by the step portion formed on the valve rod 10 engaging with the valve box 13 (see FIG. 2).
Further, in the fire hydrant valve 4, when the downward movement of the valve rod 10 is regulated, the valve body 16 abuts on the valve seat 12 by the urging force of the compression spring 15, and the valve body 16 is held in this state. Has been done.

The fire hydrant valve 4 is connected at its inlet side of the flow path 11 to a high-pressure water supply source via a connection pipe 18 or the like.

The direction changing mechanism 5 is interposed between the hose reel 2 and the fire hydrant valve 4, and changes the direction of rotation of the hose reel 2 into rotation around the axis of the valve rod 10 of the fire hydrant valve 4. .

In this embodiment, a gear structure is used for the direction changing mechanism 5, and a drive side gear 19 provided on the hose reel 2 side and a driven side gear 2 provided on the fire hydrant valve 4 side.
It consists of 0 and.

As shown in FIG. 4, the drive-side gear 19 has teeth 19a radially arranged and is fixed to the center of the side plate 2a of the hose reel 2.

As shown in FIG. 5, the driven gear 20 has a tubular portion 20a slidably fitted on the upper end portion of the valve rod 10 and a tubular portion 20.
The teeth 1 of the drive side gear 19 are radially provided on the outer peripheral surface of a.
As shown in FIG. 2, it is attached to the upper end of the valve box 13 so as to be rotatable around the axis of the valve rod 10 and immovable in the axial direction. That is, the driven gear 20 has the lower end portion of the tubular portion 20a at the valve box 13
Rotatably fitted in the upper end of the valve box 13 and the tip of the retaining pin 21 provided in the valve box 13 fitted in the circumferential groove 20c formed in the outer peripheral surface of the lower end of the tubular part 20a, so that the valve box 13 is rotatable and axially movable. It is attached so that it cannot move axially. When the driven gear 20 is attached to the valve box 13, the upper end of the valve rod 10 is slidably fitted in the tubular portion 20a, and the projection 20
b is in a state of meshing with the teeth 19a of the drive gear 19.

When the hose reel 2 is rotated, the drive-side gear 19 is rotated accordingly, and the driven-side gear 2 that meshes with the drive-side gear 19 is rotated.
0 will rotate around the axis of the valve rod 10. As a result, the rotation of the hose reel 2 is converted into the rotation around the axis of the valve rod 10.

The clutch mechanism 6 is interposed between the direction changing mechanism 5 and the valve rod 10 of the fire hydrant valve 4, transmits the rotation from the direction changing mechanism 5 to the valve rod 10, and fully opens the fire hydrant valve 4. When fully closed, rotation from the direction changing mechanism 5 is not transmitted to the valve rod 10.

Specifically, as shown in FIG. 2, the clutch mechanism 6 is composed of an angular shaft 22, a lower clutch plate 23, an upper clutch plate 24, a compression spring 25 and the like.

The square shaft 22 is integrally connected to the upper end surface of the valve rod 10 so as to be located in the cylindrical portion 20a of the driven gear 20.

The lower clutch plate 23 is non-rotatably inserted through the square shaft 22, and has a trapezoidal claw 23a on its upper surface as shown in FIG.

The upper clutch plate 24 is rotatably fitted on the square shaft 22, and has a trapezoidal claw 24a on its lower surface that can be meshed with the claw 23a of the lower clutch plate 23, as shown in FIG. . Further, the upper clutch plate 24 is provided in the tubular portion 20a so as not to be rotatable and axially movable. That is, the upper clutch plate 24 has the protrusion 24b formed on the outer peripheral edge thereof, and the vertical groove 20 formed on the inner peripheral surface of the tubular portion 20a.
By being fitted in d, it is provided in the tubular portion 20a so as not to be rotatable and axially movable.

The compression spring 25 is interposed between the upper clutch plate 24 and a cap 27 fixed to the upper end of the tubular portion 20a by a snap ring 26, and the claws 24a of the upper clutch plate 24 and the lower clutch plate 23 are clawed. The upper clutch plate 24 to the lower clutch plate 23 so that the upper clutch plate 24 always meshes with the lower clutch plate 23a.
It will be urged to the side.

The length of the square shaft 22 is set so that when the valve rod 10 moves upward and the fire hydrant valve 4 is in the open state, it is fitted to the cap 27 to regulate the upward movement of the valve rod 10. (See FIG. 3). Also, the claw 23 of each clutch plate 23, 24
The shapes of a and 24a and the urging force of the compression spring 25 act as the upper clutch plate 24 only when the upward movement and the downward movement of the valve rod 10 are restricted, that is, when the fire hydrant valve 4 is fully opened and fully closed. The lower clutch plate 23 and the lower clutch plate 23 are set so as to idle.

Then, the hose reel 2 is rotated normally and reversely to rotate the driven gear 2
When 0 is rotated forward and backward, the upper clutch plate 2
4 rotates normally and reversely, and the lower clutch plate 23 meshing with this also rotates normally and reversely to rotate the angular shaft 22 normally and reversely. As a result, the rotation from the direction changing mechanism 5 is transmitted to the valve rod 10 which is integral with the angular shaft 22, and the valve rod 10 is rotated forward and backward.

When the fire hydrant valve 4 is fully opened and fully closed, the hose reel 2 is further rotated normally and reversely to rotate the driven side gear 20 normally and reversely. As a result, the upper clutch plate 24 is normally and reversely rotated. This tries to rotate the lower clutch plate 23 in the forward and reverse directions, but the movement of the valve rod 10 is restricted when the fire hydrant valve 4 is fully opened and fully closed, so that the upper clutch plate 24 slips with respect to the lower clutch plate 23. However, the rotation of the upper clutch plate 24 is not transmitted to the lower clutch plate 23, that is, it rotates while moving up and down. as a result,
When the fire hydrant valve 4 is fully opened and fully closed, rotation from the direction changing mechanism 5 is not transmitted to the valve rod 10.

The hose 3 of the fire hydrant device is wound around the hose reel 2 so that the fire hydrant valve 4 is opened when the hose reel 2 rotates in the direction of feeding the hose 3.

Next, the operation of the fire hydrant device will be described.

When not in use, the hose 3 is wound around the hose reel 2 and the fire hydrant valve 4 is fully closed.

When the operator holds the nozzle 9 and the tip of the hose 3 and pulls it when a fire or the like occurs, the hose reel 2 rotates in the direction in which the hose 3 is drawn out by pulling out the hose 3. This rotation is converted in direction by the direction conversion mechanism 5 and then transmitted to the valve stem 10 of the fire hydrant valve 4 via the clutch mechanism 6. As a result, the valve rod 10 rotates and moves upward, and the valve body 16 is separated from the valve seat 12. As a result, the fire hydrant valve 4 is opened and water can be supplied. (See Figure 3). Since the clutch mechanism 6 does not transmit the rotation of the hose reel 2 to the valve rod 10 when the fire hydrant valve 4 is fully opened, the hose reel 2 can be continuously rotated in the direction of feeding the hose 3, and You can stretch it to the end.

On the other hand, after use, when the hose reel 2 is rotated in the reverse direction and the hose 3 is wound around the hose reel 2, the rotation of the hose reel 2 is changed in direction by the direction changing mechanism 5, and then the fire hydrant valve 4 is passed through the clutch mechanism 6. Is transmitted to the valve stem 10. As a result, the valve rod 10 rotates in the opposite direction and moves downward, so that the valve element 16 comes into contact with the valve seat 12. As a result, the fire hydrant valve 4 will be closed (see FIG. 2). still,
When the fire hydrant valve 4 is fully closed, the clutch mechanism 6
Since the rotation of the hose reel 2 is not transmitted to the valve rod 10, the hose reel 2 can be continuously rotated in the direction in which the hose 3 is wound, and the hose 3 can be wound up to the end.

(Effects of the Invention) As described above, the fire hydrant device of the present invention uses the direction changing mechanism to change the rotation of the hose reel rotatably supported by the reel shaft, and the rotation of this rotation is provided on the reel shaft by the clutch mechanism. Since the fire hydrant valve is configured to open and close by transmitting it to the valve stem of the valve, when the operator stretches the hose and rotates the hose reel during the extinguishing work, the hydrant valve is automatically opened by the direction changing mechanism and the clutch mechanism. Will be done. As a result, the hose can be stretched and the fire hydrant valve can be opened at the same time by itself, so that quick and reliable sliding of the fire can be performed. Further, the fire wire valve can be automatically closed by rotating the hose reel in the winding direction of the hose, and the winding of the hose and the closing of the fire hydrant valve can be performed simultaneously, which is extremely convenient.

Furthermore, since the fire hydrant valve is provided on the reel shaft, the piping can be shortened and the device itself can be made compact.

[Brief description of drawings]

FIG. 1 is a side view of a fire hydrant device according to an embodiment of the present invention, FIG. 2 shows a main part of the fire hydrant device, a longitudinal sectional view of a fire hydrant valve in a fully closed state, and FIG. FIG. 4 is a vertical sectional view of the fire hydrant valve in a fully opened state, FIG. 4 is a sectional view taken along line IV-IV of FIG. 1, FIG. 5 is a plan view of a driven side gear of the direction changing mechanism, and FIG. 6 is a lower clutch plate of the clutch mechanism. And FIG. 7 is a bottom view of the upper clutch plate. 1 is a reel shaft, 2 is a hose reel, 3 is a hose, 4 is a fire hydrant valve, 5 is a direction changing mechanism, 6 is a clutch mechanism, 10 is a valve rod, and 11 is a flow path.

Claims (1)

[Scope of utility model registration request] 1. A reel shaft (1) having a passage, and a hose reel (2) rotatably supported by the reel shaft (1),
A hose (3) wound around a hose reel (2) and having a base end connected to the passage of the reel shaft (1), and a reel shaft (1), which is provided on the reel shaft (1) and rotates by the valve rod (10). A fire hydrant valve (4) in which the flow path (11) communicating with the passage (1) is opened and closed, and the axis of the valve rod (10) is orthogonal to the axis of the reel shaft (1), and a hose reel (2). The direction conversion mechanism (5) for converting the rotation of the valve into the rotation around the axis of the valve stem (10) of the fire hydrant valve (4), the direction conversion mechanism (5) and the valve stem of the fire hydrant valve (4) (10). ) And transmits the rotation from the direction changing mechanism (5) to the valve rod (10), and when the fire hydrant valve (4) is fully opened and closed, the rotation from the direction changing mechanism (5) is valved. A fire hydrant device comprising a clutch mechanism (6) that does not transmit to a rod (10).