JP3053675U - Fire hydrant switch with lid opening function - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To enable the opening and closing of a manhole cover and the opening and closing of a fire hydrant opening and closing valve with one tool. A handle is provided at one end of a shaft, a box fitted to a fire hydrant is provided at the other end, and a fulcrum means is provided at an intermediate portion of the shaft, and a key is provided on a side surface of the box. The key 8 is mounted so as to be able to be raised and lowered, and a locking means is provided. When the key 8 is not used, the key 8 can be locked along the side surface of the box 7, and when used, the key 8 can be set up at a substantially right angle from the side surface of the box 7. With such a configuration, it is possible to provide a fire hydrant opening / closing tool with a lid opening function that can obtain the same usability as the independently-configured fire hydrant lid opening tool and the fire hydrant hook.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a fire hydrant switch with a lid opening function.

[0002]

[Prior art]

 Conventionally, fire hydrants for attaching fire hoses have been provided at various places on the road. The fire tap is provided with a fire extinguishing water supply port to which a fire extinguishing hose is connected, and an open / close valve for interrupting the fire extinguishing water supplied from the fire extinguishing water supply port.

In general, the fire extinguishing water supply port is often provided on the ground, but the open / close valve is often provided buried underground in order to prevent freezing even in winter.

When the open / close valve is provided in the ground, it is provided in a manhole formed by digging the ground, and an opening of the manhole is closed by a manhole cover. The manhole cover is made of iron and its weight is so heavy that it cannot be lifted easily. Further, in order to intermittently supply the fire-fighting water sent at a high pressure, the open / close valve is formed so strongly that it must be opened / closed with a considerably large force.

In order to open the manhole cover, a fire hydrant cover opening tool 50 as shown in FIG. 13 has conventionally been used. In the fire hydrant lid opening tool 50, a holder 52 is formed at the tip of a shaft 51, and a key 53 is rotatably attached to the holder 52.

A handle 54 is attached to the rear end of the shaft 51, and a roller 55 is rotatably attached to the shaft 51 at a position slightly closer to the tip than at the center. I have. The roller 55 serves as a fulcrum when the manhole cover is opened by using the fire hydrant cover opening device 50 on the principle of leverage, and it is necessary to easily move the manhole cover after lifting the manhole cover. It is intended to be able to do.

When using the fire hydrant lid opening device 50 configured as described above, first, the key 53 is inserted into an engagement hole formed in the manhole cover. Next, the handle 54 is operated to lift the manhole cover engaged with the key 53 using the roller 55 as a lever as a fulcrum. The manhole cover is moved to one of the left and right sides to be shifted laterally. The manhole cover is removed from the upper surface opening of the manhole by pulling the handle 54 toward the user.

After the manhole cover is removed as described above, the fire hydrant opening / closing valve (see FIG. 9) provided in the manhole is operated using a fire hydrant hook as shown in FIG. Water is allowed to come out.

The fire hydrant hook is reinforced by a stay 62, and a handle 61 is provided at one end of a shaft 60, and a box 63 is provided at the other end. By turning the handle 61, the fire hydrant opening / closing valve is opened / closed.

[0010]

[Problems to be solved by the invention]

 As mentioned above, the fire hydrant lid opening device for opening the manhole cover that is difficult to remove from the manhole is very sturdy, large and heavy. Similarly, the fire hydrant hook for interrupting the high-pressure water from the fire hydrant is also very large and sturdy, so that it is very heavy.

The fireman who opens the manhole cover and the fireman who opens and closes the hydrant valve are the same person. For this reason, one firefighter had to go to the fire site with both the fire hydrant lid opening tool and the fire hydrant hook 60, so that heavy labor was conventionally required.

In view of the above problems, an object of the present invention is to enable opening and closing of a manhole cover and opening and closing of a fire hydrant opening / closing valve with a single tool.

[0013]

[Means for Solving the Problems]

 The fire hydrant opening / closing device with a lid opening function of the present invention has a handle 2 at one end of a shaft 1, a box 7 fitted to the fire hydrant at the other end, and an intermediate portion of the shaft 1. Is a fire hydrant opening / closing tool having a lid opening function provided with a fulcrum means 4. A key 8 is mounted on a side surface of the box 7 so as to be able to move up and down, and a locking means is provided. When the key 8 is not used, the key 8 is locked along with the side surface of the box 7 by the locking means. When the key 8 is used, the key 8 is set up at a substantially right angle from the side surface of the box 7. It is characterized in that it can be used.

Another feature of the present invention is that the lock means is constituted by a magnet 9.

Another feature of the present invention is that the fulcrum means 4 is configured by attaching a stay 5 to the shaft 1 and rotatably attaching a roller 6 to the stay 5. It is characterized by.

Another feature of the present invention is that the fulcrum means 4 is a fulcrum 33 formed by bending the shaft 1.

[0017]

[Action]

 Since the present invention comprises the above technical means, when used for opening the manhole cover 20, the key 8 attached to the other end of the shaft 1 is raised so that the key 8 can be opened. 20 can be inserted into the engagement hole 21 formed in the same, and can be used similarly to a conventional fire hydrant lid opening device. Further, when used as a fire hydrant, the key 8 is placed in a protruding state and attached to a magnet 9 constituting a locking means, so that the key 8 can be used without obstruction. It can be used in the same way as a fire hydrant. As a result, the tool can be used in the same manner as a conventional dedicated tool, although both the function of the fire hydrant lid opening tool and the function of the fire hydrant hook are used.

[0018]

[Embodiment of the invention]

 Next, an embodiment of the fire hydrant opening / closing device with a lid opening function of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a side view of a fire hydrant opening / closing tool having a lid opening function according to an embodiment of the present invention. As shown in FIG. 1, the fire hydrant opening / closing device with a lid opening function of the present invention has a handle 2 provided at one end of a shaft 1 and is operated by holding the handle 2. The handle 2 is reinforced by a stay 3 and is firmly attached to the shaft 1.

A box 7 is attached to the other end of the shaft 1. The box 7 is formed in a rectangular cross section as shown broken in FIG. 2, and is used for intermittently extinguishing fire-extinguishing water by being fitted to an opening / closing valve provided in the manhole. It is what is done.

A key 8 is attached to the tip of the box 7. The key 8 has a locking projection 8a formed at the tip thereof, and is used to engage with an engagement hole formed in a manhole cover to lift the fire hydrant opening / closing tool as described later. In addition, in the present embodiment, the box 7 is movably mounted on the side surface of the box 7 via a hinge mechanism.

That is, as shown in FIG. 1, during use, the box 7 stands at an angle of about 90 ° with respect to the box 7. When not in use, the box 7 is held down on the side surface of the box 7 as shown in FIG.

A magnet 9 is attached to a side surface of the box 7 to which the key 8 is attached. When the key 8 is tilted down when not in use, the key 8 is moved by the magnet 9. The key 8 can be held in close contact with the side surface of the box 7 by suction.

A roller 6 constituting the fulcrum means 4 is disposed on the box 7 side of the shaft 1 with respect to a substantially central portion thereof. The roller 6 is attached to the shaft 1 via the stay 5, and acts as a fulcrum of a lever when lifting and removing the manhole cover 20, and also acts as a traveling roller when moving.

4 and 5 show a front view of the fire hydrant opening / closing device, FIG. 4 shows a state in which the key 8 is raised, and FIG. 5 shows a state in which the key 8 is turned down. FIG. 6 is a rear view in a state where the key 8 is depressed.

FIG. 7 is an exploded view showing a configuration example of the fulcrum means 4. As shown in FIG. 7, the fulcrum means 4 of the present embodiment comprises a roller support shaft 10, a washer 11 and a split pin 12, and the roller 6 freely moves on the roller support shaft 10. It is made to rotate.

When using the fire hydrant opening / closing device with a lid opening function according to the present embodiment configured as described above, first, as shown in FIGS. 8 and 9, it is formed on the manhole cover 20. The key 8 is inserted into the engagement hole 21.

The engaging hole 21 is formed in a substantially T shape by a long groove 21a and a retaining groove 21b. Then, first, the key 8 is inserted into the long groove 21a, and then the handle 2 is pulled forward to lock the locking projection 8a in the locking groove 21b.

Next, the manhole cover 20 is lifted by pressing the handle 2 downward. At this time, since the handle 2 acts as a power point and the roller 6 acts as a fulcrum, the manhole cover 20 can be lifted relatively easily.

After the manhole cover 20 is lifted as described above, as shown by an arrow in FIG. 10, the fire hydrant opening / closing device with a cover opening function is rotated about the fulcrum means 4 as a rotation center, and is indicated by a one-dot chain line. It is moved from above the manhole 22 as shown. The manhole cover 20 can be easily removed from above the manhole 22 by pulling the handle 2 forward.

After the manhole cover 20 is removed, the key 8 is depressed and held along the side of the box 7. As described above, since the magnet 9 is provided on the side surface of the box 7, the key 8 can be magnetically attracted to be securely held on the side surface of the box 7, and the key 8 It can be surely prevented from getting up.

After the key 8 is stored on the side surface of the box 7, the fire extinguishing water is passed through the fire extinguishing water pipe 24 by fitting the box 7 to the open / close valve 23 and rotating the handle 2. Fire extinguishing water can be discharged from a hose connected to a fire hydrant (not shown).

The fire hydrant opening / closing device with a lid opening function according to the present invention can be used as a tool for opening the manhole cover 20 as described above, and also as a tool for opening the opening / closing valve 23. Moreover, despite the fact that it is configured as a dual-purpose tool that opens and closes both the manhole cover 20 and the opening and closing valve 23, the usability is almost the same as that of the conventional dedicated tool that was separately configured, and that it can be used well. I can do it.

[0033] With this, the firefighter's burden is greatly increased because it is now necessary to go to the fire spot with both the manhole cover 20 and the opening / closing valve 23 by using one tool. It becomes possible to reduce to.

Next, a second embodiment of the fire hydrant switch with a lid opening function of the present invention will be described with reference to FIGS. 11 and 12. As shown in FIGS. 11 and 12, the fire hydrant opening / closing device with a lid opening function according to the second embodiment forms a fulcrum 33 by bending the box 7 side slightly from the central portion of the shaft 30. I have.

With this configuration, in the case of the fire hydrant switchgear having a lid opening function according to the second embodiment, the frictional resistance when the manhole cover 20 is lifted and pulled increases, but the configuration is simple. Thus, costs can be reduced. In addition, since the weight can be reduced, there is an advantage that the device can be easily carried.

[0036]

[Effect of the invention]

 In the present invention, as described above, a handle is formed at one end of the shaft, a box is formed at the other end, and a fulcrum means is provided at an intermediate portion of the shaft, and a key is mounted on the side surface of the box so that it can be raised and lowered, and the key is mounted. When the key is used to open the manhole cover when it is used in order to open the manhole cover, the key is raised so that the key is inserted into the engagement hole formed in the manhole cover. And can be used in the same way as a conventional fire hydrant lid opening tool. Also, when used as a fire hydrant, when the key is turned down and attached to the locking means, the key does not become an obstacle when opening and closing the open / close valve. can do. As a result, despite the fact that both the fire hydrant lid opening tool and the fire hydrant hook are used, it can be used in the same manner as a special tool, and cost reduction and easy portability can be obtained without impairing usability. .

Further, according to another feature of the present invention, since the locking means is formed by a magnet, it can be simply configured and the key can be securely locked.

According to another feature of the present invention, a stay is attached to the shaft, and a roller is rotatably attached to the stay to form a fulcrum means. The frictional resistance can be reduced, and it can be suitably used when opening and closing a heavy manhole cover.

According to another feature of the present invention, since the fulcrum is formed by bending the shaft, the structure can be simplified, the weight can be reduced, the cost can be reduced, and the handling can be reduced. Both can be gained.

[Brief description of the drawings]

FIG. 1 is a side view of a fire hydrant opening / closing device having a lid opening function according to an embodiment of the present invention, showing a key raised state.

FIG. 2 is a view showing a side surface of the fire hydrant opening / closing device with a lid opening function according to the embodiment, and showing a state in which a key is turned down.

FIG. 3 is a diagram showing a bottom surface of the fire hydrant opening / closing device with a lid opening function according to the embodiment;

FIG. 4 is a diagram illustrating a fire hydrant opening / closing tool with a lid opening function according to the embodiment, as viewed from the front, and showing a state in which a key is raised.

FIG. 5 is a diagram showing a state of the fire hydrant opening / closing device with a lid opening function according to the embodiment as viewed from the front, and showing a state in which a key is turned down.

FIG. 6 is a diagram showing a fire hydrant opening / closing device with a lid opening function according to the embodiment as viewed from the back, and showing a state in which a key is turned down.

FIG. 7 is an exploded view showing details of a configuration example of the fulcrum means.

FIG. 8 is a plan view showing an example of a manhole cover.

FIG. 9 is a cross-sectional view illustrating an example of a manhole.

FIG. 10 is a diagram illustrating an example of a procedure for removing a manhole cover.

FIG. 11 is a plan view of a fire hydrant switch with a lid opening function according to a second embodiment of the present invention.

FIG. 12 is a side view of a fire hydrant switch with a lid opening function according to a second embodiment of the present invention.

FIG. 13 is a side view showing an example of a conventional fire hydrant lid opening tool.

FIG. 14 is a plan view showing an example of a conventional fire hydrant hook.

[Explanation of symbols]

 Reference Signs List 1 shaft 2 handle 3 stay 4 fulcrum means 5 stay 6 roller 7 box 8 key 8a locking projection 9 magnet 10 roller support shaft 11 washer 12 pin 20 manhole cover 21 engagement hole 21a long groove 21b locking groove 22 manhole 23 opening and closing valve

Claims (4)

[Utility model registration claims] 1. A handle 2 is provided at one end of a shaft 1, a box 7 fitted to a fire hydrant is provided at the other end, and a fulcrum means 4 is provided at an intermediate portion of the shaft 1. A fire hydrant opening / closing tool having a lid opening function, wherein a key 8 is mounted on a side surface of the box 7 so as to be able to move up and down, and a lock means is provided. When the key 8 is not used, the lock means is used. The key 8 is locked along with the side surface of the box 7 so that the key 8 can be used in a state where the key 8 stands upright at a right angle from the side surface of the box 7 when used. Fire hydrant closure with lid opening function. 2. A fire hydrant opening / closing tool with a lid opening function according to claim 1, wherein said locking means is constituted by a magnet. 3. The fulcrum means 4 according to claim 1, wherein a stay 5 is attached to the shaft 1 and a roller 6 is attached to the stay 5 so as to be rotatable. Fire hydrant switch with lid opening function. 4. The fire hydrant switch with a lid opening function according to claim 1, wherein the fulcrum means 4 is a fulcrum part 33 formed by bending the shaft 1.