JPH0437115Y2 - - Google Patents
Info
- Publication number
- JPH0437115Y2 JPH0437115Y2 JP1985010115U JP1011585U JPH0437115Y2 JP H0437115 Y2 JPH0437115 Y2 JP H0437115Y2 JP 1985010115 U JP1985010115 U JP 1985010115U JP 1011585 U JP1011585 U JP 1011585U JP H0437115 Y2 JPH0437115 Y2 JP H0437115Y2
- Authority
- JP
- Japan
- Prior art keywords
- manhole
- container
- suction pipe
- hole
- fire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000002265 prevention Effects 0.000 claims description 15
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 3
- 241000646858 Salix arbusculoides Species 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 19
- 241000124033 Salix Species 0.000 description 6
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 2
- 239000011151 fibre-reinforced plastic Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、防火用の水槽または水路に設けたマ
ンホールにおける転落防止装置に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a fall prevention device for a manhole provided in a fire prevention water tank or waterway.
（従来の技術）
従来、防火用水槽におけるマンホールの開口部
は、開口部の上面を形成する受け枠の上に、ガス
抜き孔を有する蓋を乗せることにより施蓋されて
いる。(Prior Art) Conventionally, the opening of a manhole in a fire prevention water tank has been covered by placing a lid having a gas vent hole on a receiving frame that forms the upper surface of the opening.
（考案が解決しようとする問題点）
ところで、実際に火災が発生して防火用水槽内
の水を用いて消火する際は、蓋をあけてマンホー
ル開口部から消防車の消火ホース用吸管を消火用
水槽の水面下まで下ろして消火活動を行うことに
なるが、この場合、マンホールから防火用水槽に
入れられた吸管の数が１ないし２本であるとき
は、マンホールの大きさに比べて前記吸管の径が
かなり小さいため、該両者間に大きな間〓が生
じ、ここから人間が防火用水槽に転落する恐れが
ある。殊に、火災時には人間の心理状態が同点し
て不慮の転落事故が起きやすくなる。(Problem that the invention aims to solve) By the way, when a fire actually breaks out and is extinguished using the water in the fire prevention water tank, the lid is opened and the fire engine's fire hose suction pipe is extinguished through the manhole opening. Firefighting activities will be carried out by lowering the water below the water level of the water tank, but in this case, if the number of suction pipes inserted into the fire tank from the manhole is one or two, the above-mentioned size will be lower than the size of the manhole. Since the diameter of the suction pipe is quite small, there is a large gap between the two, which may cause a person to fall into the fire prevention water tank. In particular, in the event of a fire, people's psychological states are at the same level, making it more likely that an accidental fall will occur.
本考案はこの点に鑑みなされたもので、消火ホ
ース用吸管が入れられるマンホールにおいて、消
火活動時に転落事故が起こることを防止する装置
を提供しようとするものである。 The present invention has been developed in view of this point, and aims to provide a device that prevents falling accidents during firefighting operations in a manhole into which a fire hose suction pipe is inserted.
（問題点を解決するための手段）
このため本考案の技術的な手段は、マンホール
の開口部近傍に、該開口部に対応する大きさであ
つて上縁拡開部がマンホール蓋用受け枠に載るよ
うに形成された落下物受け用のプラスチツク製容
器を着脱可能に配設し、該容器の底部に、消火ホ
ース用吸管が挿入される大きさの孔を形成すると
共に、該孔に前記吸管の先端に装着される柳かご
スクリーンを紐または鎖を介して取外し可能に取
付け、かつ該孔を形成するフランジ部上面に、赤
色のプリズム型リフレクターを固着し、前記容器
の上部にテーパ状の上縁拡開部を形成し、前記マ
ンホール蓋用受け枠のテーパ状内面に載置したこ
とを特徴とする。(Means for Solving the Problems) Therefore, the technical means of the present invention is to provide a manhole cover receiving frame with a size corresponding to the opening and an upper edge enlarged portion near the opening of the manhole. A plastic container for receiving fallen objects is removably arranged so as to rest on the container, and a hole is formed in the bottom of the container to a size into which a fire hose suction pipe is inserted, and the A willow basket screen attached to the tip of the suction pipe is removably attached via a string or chain, a red prism-shaped reflector is fixed to the upper surface of the flange forming the hole, and a tapered reflector is attached to the top of the container. It is characterized in that an upper edge enlarged portion is formed and placed on the tapered inner surface of the manhole cover receiving frame.
容器の材料としては強度の大きい繊維強化プラ
スチツクが好ましく、ポリカーボネートやポリメ
チルメタクリレート等の無色透明のプラスチツク
材料を用いれば、容器を取り外さなくてもマンホ
ール内が見える構造になる。消火ホース用吸管を
挿通される孔の数はマンホールの大きさに応じて
１または２以上の適当数設けることができる。該
孔の開口総面積が増大すれば、それに応じて落下
物を受ける容器の機能が低下するが、これについ
ては、消火ホース用吸管の先端に装着される柳か
ごスクリーン等のストレーナを前記孔に着脱可能
に取り付けることで対応できる。 Fiber-reinforced plastic with high strength is preferable as the material for the container, and if a colorless and transparent plastic material such as polycarbonate or polymethyl methacrylate is used, the inside of the manhole can be seen without removing the container. The number of holes through which the fire hose suction pipe is inserted can be one or more depending on the size of the manhole. If the total opening area of the hole increases, the function of the container for catching falling objects will decrease accordingly, but in this case, a strainer such as a willow cage screen attached to the end of the fire hose suction pipe should be installed in the hole. This can be done by attaching it removably.
（作用）
上記構成の装置において消火活動を行うには、
先ずマンホール蓋をあけて消火ホース用吸管を容
器の孔に挿入してそのまま下ろすことで防火用水
を汲み上げることができる。この場合、マンホー
ルと消火ホース用吸管間には容器が存在し落下物
を受けるので、人間が転落することはない。(Function) In order to carry out fire extinguishing operations using the device with the above configuration,
Fire water can be pumped up by first opening the manhole cover, inserting the fire hose suction pipe into the hole in the container and lowering it. In this case, there is a container between the manhole and the fire hose suction pipe to catch falling objects, so people will not fall into it.
前記孔のすべてに消火ホース用吸管を通して消
火活動を行つているとき、さらに他の吸管を防火
用水槽に入れて消火能力を高めたい場合は、マン
ホール開口部に配された落下物受け用容器を前記
消火ホース用吸管に沿つてマンホールの外に引き
上げ、この状態で容器とマンホールの間から前記
他の消火ホース用吸管をマンホール内に突込んで
防火用水槽に下ろせばよい。このようにして、マ
ンホールに複数本の吸管を突込んでいくと、マン
ホールと吸管との〓間が該吸管の本数に応じて小
さくなり、容器をマンホールの外に引き上げて
も、マンホールと複数の吸管との〓間から人間が
落ちるようなことは実際上起こり得なくなる。 When carrying out firefighting activities by passing fire hose suction pipes through all of the above holes, if you wish to further increase the fire extinguishing ability by placing other suction pipes in the fire prevention water tank, use a container to catch fallen objects placed at the manhole opening. It is sufficient to pull the fire hose out of the manhole along the fire hose suction pipe, and in this state, insert the other fire hose suction pipe into the manhole from between the container and the manhole and lower it into the fire prevention water tank. In this way, when multiple suction pipes are inserted into the manhole, the gap between the manhole and the suction pipes becomes smaller according to the number of suction pipes, and even if the container is pulled up outside the manhole, the distance between the manhole and the suction pipes becomes smaller. In reality, it becomes impossible for a human being to fall between the two.
（実施例）
以下に本考案の一実施例を第１図および第２図
によつて説明すると、１は舗装路面２に開口する
防火用水槽のマンホールで、その開口部近傍箇所
には、これに対応する大きさの有底円筒形の落下
物受け用容器３が設けられ容器３は繊維強化プラ
スチツクより製作されている。容器３の側部は４
本のセラミツク製ロツク部材４によつてマンホー
ル１の側壁５に着脱可能に取り付けられている。
ロツク部材４は、第１図のロツク状態から90度だ
け回わして、マンホール１の外側への移動させる
ことでロツク解除できるようになつている。(Embodiment) An embodiment of the present invention will be explained below with reference to Figs. A cylindrical container 3 with a bottom corresponding to the size of the container 3 for receiving fallen objects is provided, and the container 3 is made of fiber-reinforced plastic. The side of container 3 is 4
It is removably attached to the side wall 5 of the manhole 1 by a locking member 4 made of ceramic.
The locking member 4 can be unlocked by turning it by 90 degrees from the locked state shown in FIG. 1 and moving it to the outside of the manhole 1.
容器３の底部には、その中央部に消火ホース用
吸管が挿入される孔６が１箇だけ形成され、孔６
を挟んでその両側位置に把手７が設けられてい
る。孔６には、前記吸管の先端に装着される柳か
ごスクリーン８が、紐または鎖９を介して取外し
可能に取り付けられている。孔６を形成するフラ
ンジ部１０上面には、赤色のプリズム型リフレク
ター１１が固着され、夜間でも孔６の位置を容易
に視認できるようになつている。 At the bottom of the container 3, only one hole 6 is formed in the center thereof into which a fire hose suction pipe is inserted.
Handles 7 are provided on both sides of the handle. A willow basket screen 8, which is attached to the tip of the suction pipe, is removably attached to the hole 6 via a string or chain 9. A red prism type reflector 11 is fixed to the upper surface of the flange portion 10 forming the hole 6, so that the position of the hole 6 can be easily recognized even at night.
容器３の上部にはテーパ状の上縁拡開部３ａが
形成され、この上縁拡開部３ａはマンホール蓋用
受け枠１２のテーパ状内面に載置されている。受
け枠１２の上には、容器３の上縁拡開部３ａを介
してマンホール蓋１３が設けられ、１３ａはマン
ホール蓋１３に形成されたガス抜き孔である。そ
の他、１４はロツク部材４をカバーする開閉カバ
ーである。 A tapered upper edge enlarged portion 3a is formed in the upper part of the container 3, and this upper edge enlarged portion 3a is placed on the tapered inner surface of the manhole cover receiving frame 12. A manhole cover 13 is provided on the receiving frame 12 via the upper edge enlarged portion 3a of the container 3, and 13a is a gas vent hole formed in the manhole cover 13. Additionally, reference numeral 14 is an opening/closing cover that covers the lock member 4.
このような構成の転落防止装置において、マン
ホール蓋１３をあけて実際に消火活動を行うに
は、先ず１本目の吸管１５を容器３の孔６に挿入
し、この吸管１５の先端に、前記孔６に取り付け
てある柳かごスクリーン８を装着する。次に、柳
かごスクリーン８から紐または鎖９を取外し、吸
管１５をマンホール１下部の防火用水槽の水面下
まで降ろす。この状態では容器３がロツク部材４
を介してマンホール１の側壁５に連結固定されて
おり、作業者が誤つてマンホール１内に踏み入れ
たとしても、マンホール１の底に転落することは
ない。 In the fall prevention device having such a configuration, in order to open the manhole cover 13 and actually carry out fire extinguishing operations, first insert the first suction pipe 15 into the hole 6 of the container 3, and insert the tip of the suction pipe 15 into the hole 6. Attach the willow basket screen 8 attached to 6. Next, the string or chain 9 is removed from the willow basket screen 8, and the suction pipe 15 is lowered to below the water surface of the fire prevention water tank at the bottom of the manhole 1. In this state, the container 3 is locked to the locking member 4.
It is connected and fixed to the side wall 5 of the manhole 1 via the holder, so that even if a worker accidentally steps into the manhole 1, he or she will not fall to the bottom of the manhole 1.
ついで、２本目の吸管１５′を防火用水槽に入
れる際は、ロツク部材４をロツク解除したうえ
で、第３図に示すように、容器３を１本目の吸管
１５に沿つてマンホール１の外に引き揚げ、２本
目の吸管１５′を防火用水槽内に降ろせばよい。
この後、３本目以降の吸管１５″を防火用水槽に
入れるには、容器３を引き揚げたまま、マンホー
ル１と吸管１５，１５′間に生じている〓間から
３本目以降の吸管１５″を順次入れることができ
る。 Next, when putting the second suction pipe 15' into the fire prevention water tank, after unlocking the locking member 4, as shown in FIG. All you have to do is pull it up and lower the second suction pipe 15' into the fire prevention water tank.
After this, in order to put the third and subsequent suction pipes 15'' into the fire prevention water tank, while lifting the container 3, insert the third and subsequent suction pipes 15'' from the gap that is created between the manhole 1 and the suction pipes 15 and 15'. They can be entered sequentially.
このようにして、マンホール１に所定の本数の
吸管１５，１５′，１５″を突込むことにより、該
両者１と１５，１５′，１５″との〓間を作業者の
足の大きさよりも小さくでき、容器３をマンホー
ル１の外に引き揚げても転落事故を防止できるこ
ととなる。 In this way, by inserting a predetermined number of suction pipes 15, 15', 15'' into the manhole 1, the distance between the two suction pipes 1 and 15, 15', 15'' is larger than the size of the worker's foot. It can be made smaller, and falling accidents can be prevented even if the container 3 is pulled up outside the manhole 1.
第４図は他の実施例を示すもので、受け枠１２
が段付状に形成されたマンホール１に適用したも
ので、容器３の上縁拡開部３ａを受け枠１２の形
状に対応して段付状に形成した例を示す。なお、
第４図において第１図と同一符号のものは、それ
と同一部材であり、その説明を省略する。 FIG. 4 shows another embodiment, in which the receiving frame 12
This is applied to a manhole 1 formed in a stepped shape, and shows an example in which the upper edge expanded portion 3a of a container 3 is formed in a stepped shape corresponding to the shape of the receiving frame 12. In addition,
In FIG. 4, the same reference numerals as in FIG. 1 are the same members, and the explanation thereof will be omitted.
（考案の効果）
以上述べたように本考案によれば、防火用水槽
等のマンホールにおいて、消火活動最初の消火ホ
ース用吸管はマンホール開口部に設けた容器の孔
を挿通させて降ろすことができるので、マンホー
ルに突込まれる吸管が１本だけであつても、マン
ホールと吸管との間に大きな間〓がないので、火
災時、人が動転している際でも、該マンホールか
らの転落事故を未然に防ぐことができる。また、
吸管の先端に、孔に取付けてある柳かごスクリー
ンを装着し、直ちに、柳かごスクリーンから紐ま
たは鎖を取外し、吸管をマンホール下部の防火用
水槽の水面下まで降ろすことができるため迅速な
消火活動ができる。また、容器の上縁拡開部はマ
ンホール蓋用受け枠に載置されるので、プラスチ
ツク製容器が軽いこととも関係して容器の着脱を
迅速、容易に行うことができ、加えて、前記上縁
拡開部はマンホール蓋と受け枠の間において緩衝
材として機能し、マンホール蓋の上を自動車等が
通る際におけるガタ付きを防止できる。さらに、
マンホール蓋のガス抜き孔からマンホール内に侵
入する塵埃、土砂等は容器内に集められるので、
従来のようにマンホールの底まで降りて集泥作業
を行う必要がない。また、孔を形成するフランジ
部上面に赤色のプリズム型リフレクターを取付け
たので夜間でも容器の孔の位置を容易に確認でき
夜間作業の安全確保に効果がある。(Effects of the invention) As described above, according to the invention, in a manhole such as a fire prevention water tank, the suction pipe for the fire hose used at the beginning of firefighting activities can be lowered by inserting it through the hole in the container provided at the manhole opening. Therefore, even if only one suction pipe is pushed into a manhole, there is no large gap between the manhole and the suction pipe, so even if a person is upset during a fire, there is no chance of falling from the manhole. It can be prevented. Also,
Attach the willow cage screen attached to the hole to the tip of the suction pipe, immediately remove the string or chain from the willow cage screen, and lower the suction pipe below the water surface of the fire prevention water tank at the bottom of the manhole, allowing for rapid firefighting. I can do it. In addition, since the upper edge expansion part of the container is placed on the manhole cover receiving frame, the container can be quickly and easily attached and detached due to the fact that the plastic container is light. The edge expansion portion functions as a buffer between the manhole cover and the receiving frame, and can prevent rattling when a car or the like passes over the manhole cover. moreover,
Dust, dirt, etc. that enter the manhole through the gas vent hole in the manhole cover are collected in the container.
There is no need to go down to the bottom of the manhole to collect mud as in the past. In addition, a red prism type reflector is attached to the top surface of the flange that forms the hole, so the position of the hole in the container can be easily confirmed even at night, which is effective in ensuring safety during nighttime work.
第１図は本考案の一実施例を示す縦断面図、第
２図は第１図におけるロツク部材を90度回した状
態の−線に沿う断面図、第３図は第１図のも
のの消火ホース用吸管の挿入状態を示す縦断面
図、第４図は本考案の他の実施例を示す縦断面図
である。
１……マンホール、３……容器、３ａ……上縁
拡開部、６……孔、１２……受け枠、１３……マ
ンホール蓋、１５，１５′，１５″……吸管。
Fig. 1 is a longitudinal sectional view showing one embodiment of the present invention, Fig. 2 is a sectional view taken along the - line with the lock member turned 90 degrees in Fig. 1, and Fig. 3 is a fire extinguishing device of the one shown in Fig. 1. FIG. 4 is a vertical cross-sectional view showing another embodiment of the present invention. 1... Manhole, 3... Container, 3a... Upper edge expansion part, 6... Hole, 12... Receiving frame, 13... Manhole cover, 15, 15', 15''... Suction pipe.
Claims (1)
る大きさであつて上縁拡開部がマンホール蓋用受
け枠に載るように形成された落下物受け用のプラ
スチツク製容器を着脱可能に配設し、該容器の底
部に、消火ホース用吸管が挿入される大きさの孔
を形成すると共に、該孔に前記吸管の先端に装着
される柳かごスクリーンを紐または鎖を介して取
外し可能に取付け、かつ該孔を形成するフランジ
部上面に、赤色のプリズム型リフレクターを固着
し、前記容器の上部にテーパ状の上縁拡開部を形
成し、前記マンホール蓋用受け枠のテーパ状内面
に載置したことを特徴とするマンホールの転落防
止装置。 Near the opening of the manhole, a plastic container for receiving fallen objects is removably arranged, the size of which corresponds to the opening, and the upper edge of which is expanded so that it rests on the manhole cover receiving frame. A hole of a size into which a fire hose suction pipe is inserted is formed in the bottom of the container, and a willow basket screen to be attached to the tip of the suction pipe is removably attached to the hole via a string or chain. , and a red prism-shaped reflector is fixed to the upper surface of the flange portion forming the hole, a tapered upper edge widening portion is formed in the upper part of the container, and the reflector is mounted on the tapered inner surface of the manhole cover receiving frame. A manhole fall prevention device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985010115U JPH0437115Y2 (en) | 1985-01-28 | 1985-01-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985010115U JPH0437115Y2 (en) | 1985-01-28 | 1985-01-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61125996U JPS61125996U (en) | 1986-08-07 |
| JPH0437115Y2 true JPH0437115Y2 (en) | 1992-09-01 |
Family
ID=30491001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985010115U Expired JPH0437115Y2 (en) | 1985-01-28 | 1985-01-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0437115Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012136296A (en) * | 2007-11-26 | 2012-07-19 | Air Products & Chemicals Inc | Vessel with personnel access provision |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS532564B2 (en) * | 1972-09-05 | 1978-01-30 | ||
| JPS5853334U (en) * | 1981-09-30 | 1983-04-11 | 株式会社日立製作所 | Patshua type gas shield disconnector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS532564U (en) * | 1976-06-25 | 1978-01-11 |
-
1985
- 1985-01-28 JP JP1985010115U patent/JPH0437115Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS532564B2 (en) * | 1972-09-05 | 1978-01-30 | ||
| JPS5853334U (en) * | 1981-09-30 | 1983-04-11 | 株式会社日立製作所 | Patshua type gas shield disconnector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012136296A (en) * | 2007-11-26 | 2012-07-19 | Air Products & Chemicals Inc | Vessel with personnel access provision |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61125996U (en) | 1986-08-07 |
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