JP2008202359A - Temporary cover for manhole - Google Patents
Temporary cover for manhole Download PDFInfo
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- JP2008202359A JP2008202359A JP2007041842A JP2007041842A JP2008202359A JP 2008202359 A JP2008202359 A JP 2008202359A JP 2007041842 A JP2007041842 A JP 2007041842A JP 2007041842 A JP2007041842 A JP 2007041842A JP 2008202359 A JP2008202359 A JP 2008202359A
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- manhole
- grating
- temporary cover
- temporary
- manholes
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Abstract
Description
本発明は、マンホールの清掃点検，診断作業等に使用する、換気ダクト孔とケーブル導入孔と複数の光入射孔とを設けたマンホール用仮蓋に関するものである。 The present invention relates to a manhole temporary cover provided with a ventilation duct hole, a cable introduction hole, and a plurality of light incident holes, which are used for manhole cleaning inspection, diagnosis work, and the like.
従来，マンホールの清掃点検，診断作業等に使用するマンホール用仮蓋において、蓋本体に地下管路内に空気を送る送風管を挿通させるための挿通孔と地下管路内に外光を入射させるための光入射孔と手を挿入して開口部を開閉するための挿入孔とを設けたものがある（例えば特許文献１参照。）。
また、マンホールの工事用仮蓋の支持体として、はりに２つスライダーを摺動自在に取り付け、該スライダーにハの字形に開く２本のアームを取り付け、どんなマンホールにもマンホール内で支持体が固定でき、該支持体の上に仮蓋を載せたものがある（例えば特許文献２参照。）。
Conventionally, in a manhole temporary cover used for manhole cleaning inspection, diagnostic work, etc., external light is made to enter the insertion hole and the underground pipe for inserting a blower pipe that sends air into the underground pipe in the lid body. For example, there is provided a light incident hole for insertion and an insertion hole for opening and closing the opening by inserting a hand (see, for example, Patent Document 1).
In addition, as a support for the temporary cover for manhole construction, two sliders are slidably attached to the beam, and two arms that open in a U-shape are attached to the slider. Any manhole has a support in the manhole. Some can be fixed and a temporary lid is placed on the support (for example, see Patent Document 2).
ところで、前記前者の従来の技術では、マンホールの開口部の大きさにより仮蓋をそれぞれ製作する必要があると共に仮蓋が鉄製である為、運搬，設置及び取り外しが簡単にできない問題があった。
また、前記後者の従来の技術では、支持体のマンホール内の設置が簡単にできず、支持体を構成する部品点数が多くなりコスト高であると共に支持体の上に載せる仮蓋が木製である為、その上で作業する作業者の安全性に欠ける虞があった。
By the way, in the former conventional technology, there is a problem that it is necessary to manufacture a temporary lid depending on the size of the opening of the manhole and that the temporary lid is made of iron, so that it cannot be easily transported, installed and removed.
Further, in the latter prior art, it is not easy to install the support in the manhole, the number of parts constituting the support is increased, the cost is high, and the temporary lid placed on the support is wooden. For this reason, there is a possibility that the safety of the worker who works on it may be lacking.
本発明は、従来の技術の有するこのような問題点に鑑みてなされたものであり、その目的とするところは、既存マンホールの複数の開口部の大きさに対応可能であり、軽量で運搬，設置及び取り外しが簡単にでき、路上作業者も安心，安全に作業ができるマンホール用仮蓋を提供しようとするものである。 The present invention has been made in view of such problems of the prior art, and the object of the present invention is to support the size of a plurality of openings of an existing manhole, and is light and transportable. It is intended to provide a manhole temporary lid that can be easily installed and removed, and that allows road workers to work safely and securely.
上記目的を達成するために、本発明におけるマンホール用仮蓋は、仮蓋本体をガラス繊維入り強化プラスチック製グレーチングで形成し、該グレーチングの外周近傍に受枠対応の複数の自在鉤金具と各自在鉤金具の先端をグレーチング内に待機させる溝とを設けたものである。 In order to achieve the above object, the manhole temporary cover according to the present invention has a temporary cover body formed of glass fiber reinforced plastic grating, and a plurality of flexible metal fittings corresponding to receiving frames and each of the universal metal fittings in the vicinity of the outer periphery of the grating. A groove for providing a leading edge in the grating is provided.
以上のように、仮蓋本体をガラス繊維入り強化プラスチック製グレーチングで形成したので、軽量で運搬，設置及び取り外しが簡単にでき、マンホール内の作業者が上ってきてマンホール内からでも仮蓋の取り外しが可能であり、また、製品強度が高いのでグレーチングに人が乗ることも可能であり、路上作業員も負担の少ない姿勢で安心，安全に作業ができると共に格子状の小孔から光入射されマンホール内の視界も良好となり作業効率も向上され、また、該グレーチングの外周近傍に受枠対応の複数の自在鉤金具と各自在鉤金具の先端をグレーチング内に待機させる溝とを設けたものであるので、既存マンホールの複数の開口部の大きさ例えばグレーチングの大きさ以上にも対応可能なマンホール用仮蓋となる。 As described above, the temporary lid body is made of glass fiber reinforced plastic grating, so it is lightweight, easy to transport, install and remove. The workers in the manhole come up and the temporary lid can be removed from the manhole. It can be removed, and because the product strength is high, it is possible for people to get on the grating, and road workers can work safely and safely with a low burden, and light is incident from a grid-like small hole. Since the visibility in the manhole is good and the work efficiency is improved, a plurality of free metal fittings corresponding to the receiving frame and a groove for waiting the tip of each free metal fitting in the grating are provided in the vicinity of the outer periphery of the grating. This is a manhole temporary cover that can accommodate the size of a plurality of openings of an existing manhole, for example, the size of the grating.
換気ダクト孔とケーブル導入孔と複数の光入射孔とを設けたマンホール用仮蓋において、仮蓋本体をガラス繊維入り強化プラスチック製グレーチングで形成し、該グレーチングの外周近傍に受枠対応の複数の自在鉤金具と各自在鉤金具の先端をグレーチング内に待機させる溝とを設けたマンホール用仮蓋。 In a manhole temporary cover provided with a ventilation duct hole, a cable introduction hole, and a plurality of light incident holes, the temporary cover body is formed of reinforced plastic grating containing glass fiber, and a plurality of flexible frames corresponding to receiving frames are provided in the vicinity of the outer periphery of the grating. A manhole temporary cover provided with a bracket and a groove for waiting the tip of each free metal bracket in the grating.
図１ないし図３は本発明の実施例に関するものであり、図１は本発明のマンホール用仮蓋の平面図、図２は図１におけるグレーチングのＡ−Ａ断面図、図３は図１におけるグレーチングのＢ−Ｂ断面図である。 1 to 3 relate to an embodiment of the present invention, FIG. 1 is a plan view of a manhole temporary cover according to the present invention, FIG. 2 is a sectional view taken on line AA of the grating in FIG. 1, and FIG. It is BB sectional drawing of grating.
図において、１はマンホール用仮蓋であり、該仮蓋１はマンホール内の清掃点検，診断作業時にマンホール蓋の代わりにマンホール開口部を養生するものであり、仮蓋本体２と複数の自在鉤金具３，３，…とで構成されている。 In the figure, reference numeral 1 denotes a manhole temporary cover. The temporary cover 1 is used to cure a manhole opening instead of a manhole cover during cleaning inspection and diagnostic work in the manhole. 3, 3,...
前記仮蓋本体２は、ガラス繊維入り強化プラスチック材により格子状に一体形成された有孔板体のグレーチング４で円板状に形成され、該グレーチング４にはマンホール内を換気する例えば換気ダクトを挿通するための大孔の換気ダクト孔５とマンホール内を点検する例えばケーブルを挿通するための中孔のケーブル導入孔６とが穿設されている。そして前記ケーブル導入孔６の上面円周部に曲面部７を形成してケーブル等の損傷を防止している。 The temporary lid body 2 is formed into a disk shape by a perforated plate grating 4 integrally formed in a lattice shape with a glass fiber reinforced plastic material, and the grating 4 is provided with, for example, a ventilation duct for ventilating the inside of a manhole. A large ventilation duct hole 5 for insertion and an intermediate cable introduction hole 6 for inspecting the inside of the manhole, for example, for insertion of a cable, are formed. And the curved surface part 7 is formed in the upper surface circumference part of the said cable introduction hole 6, and damage to a cable etc. is prevented.
また、前記グレーチング４の外周近傍には、詳細に後述するマンホール蓋受枠８に対応させる複数（例えば四個）の自在鉤金具３，３，…と各自在鉤金具３，３，…の先端をグレーチング４内に待機させる溝９，９，…とが設けられている。 Further, in the vicinity of the outer periphery of the grating 4, the tips of the plurality of (for example, four) free metal fittings 3, 3... Corresponding to the manhole cover receiving frame 8, which will be described in detail later, and the tips of the free metal fittings 3, 3. .. Are provided for waiting inside.
前記自在鉤金具３はステンレス製で二枚のステンレス板をグレーチング４の上面と下面に挟持しグレーチング４に形成したボルト挿通孔１０，１０，…に自在鉤金具３の他端側でボルト１１，１１，…とグレーチング４の下面のステンレス板に溶着されたナット１２，１２，…とにより自在鉤金具３はグレーチング４に取り付けられている。そして、自在鉤金具３の先端側には二枚のステンレス板の垂直方向下方に突出する鉤部１３，１３，…が形成され、前記ボルト１１，１１，…を枢軸として各自在鉤金具３，３，…は回動し、該鉤部１３，１３，…がグレーチング４の外周に配置させることができるようにしている。 The universal saddle fitting 3 is made of stainless steel, and two stainless steel plates are sandwiched between the upper and lower surfaces of the grating 4, and bolts 11, 11,. .. And the nuts 12, 12,... Welded to the stainless steel plate on the lower surface of the grating 4 are attached to the grating 4. .. Are formed on the front end side of the two stainless steel plates so as to protrude downward in the vertical direction of the two stainless steel plates, and each of the free metal fittings 3, 3,. ... Rotate so that the flanges 13, 13,... Can be arranged on the outer periphery of the grating 4.
以上のような構成からなるマンホール用仮蓋であるので、マンホール内の清掃点検，診断作業時にマンホール蓋の代わりとしてマンホール開口部を養生するマンホール用仮蓋１を設置することにより、人の転落や大きな工具，石等の落下を防止し、ケーブル等の損傷も防止できる。そして、グレーチング４がガラス繊維入り強化プラスチック材により格子状に一体形成された有孔板体であることにより、軽量（約八ｋｇ）で運搬，設置及び取り外しが簡単にでき、マンホール内の作業者が上ってきてマンホール内からでも仮蓋１の取り外しが可能であり、また、製品強度が高いのでグレーチング４に人が乗ることも可能であり、路上作業員も負担の少ない姿勢で安心，安全に作業ができると共に格子状の小孔から光入射されマンホール内の視界も良好となり作業効率も向上される。 Since the manhole temporary lid is configured as described above, by installing the manhole temporary lid 1 for curing the manhole opening instead of the manhole cover during cleaning inspection and diagnostic work in the manhole, Prevents large tools, stones, etc. from falling and prevents damage to cables. And, since the grating 4 is a perforated plate body integrally formed in a lattice shape with a glass fiber reinforced plastic material, it is lightweight (about 8 kg) and can be easily transported, installed, and removed, and the workers in the manhole The temporary lid 1 can be removed even from inside the manhole, and the strength of the product makes it possible for people to get on the grating 4 so that road workers can rest assured and safe. Thus, the light is incident from the lattice-shaped small holes, the visibility in the manhole is improved, and the working efficiency is improved.
また、既存のマンホールの受枠８にはテーパー型，旧小型，大型のものがあり、本発明のマンホール用仮蓋１は自在鉤金具３を設けてそれぞれに対応可能としている。 In addition, the existing manhole receiving frame 8 includes a taper type, an old small size, and a large size, and the manhole temporary cover 1 according to the present invention is provided with a universal metal fitting 3 so as to correspond to each.
図４及び図５はテーパー型のマンホールの受枠８にマンホール用仮蓋１を設置したものであり、前記自在鉤金具３，３，…の先端は溝９，９，…内に待機させている。そして、グレーチング４の外周部１４の底面が受枠８のテーパー１５の水平部に載置されると共に前記各自在鉤金具３の先端側に突出する鉤部１３の一部側面が受枠８の立ち上がり部１６の内周面に当接され、マンホール用仮蓋１はテーパー型のマンホールの受枠８に確実に設置される。 4 and 5 show a manhole temporary cover 1 installed on a receiving frame 8 of a tapered manhole, and the tips of the free metal fittings 3, 3,... Stand in the grooves 9, 9,. The bottom surface of the outer peripheral portion 14 of the grating 4 is placed on the horizontal portion of the taper 15 of the receiving frame 8, and a part of the side surface of the flange portion 13 protruding to the distal end side of each universal hook 3 is a rising portion 16 of the receiving frame 8. The manhole temporary lid 1 is securely installed on the receiving frame 8 of the tapered manhole.
図６及び図７は旧小型のマンホールの受枠１８にマンホール用仮蓋１を設置したものであり、前記自在鉤金具３，３，…の先端を溝９，９，…から回動させてグレーチング４の外周部１４に当接させる。そして、グレーチング４の底面が受枠１８の分岐部１７の上面に載置されると共に前記各自在鉤金具３の先端側に突出する鉤部１３の一部側面が受枠１８の立ち上がり部１９の内周面に当接され、マンホール用仮蓋１は旧小型のマンホールの受枠１８に確実に設置される。 6 and 7 show a manhole temporary lid 1 installed on a receiving frame 18 of an old small manhole, and the leading end of the universal metal fittings 3, 3,... Is rotated from the grooves 9, 9,. It is made to contact | abut to the outer peripheral part 14. The bottom surface of the grating 4 is placed on the top surface of the branching portion 17 of the receiving frame 18, and a part of the side surface of the flange portion 13 protruding to the distal end side of each universal hook 3 is the inner peripheral surface of the rising portion 19 of the receiving frame 18. The manhole temporary lid 1 is securely installed on the receiving frame 18 of the old small manhole.
図８及び図９は大型のマンホールの受枠２８にマンホール用仮蓋１を設置したものであり、前記自在鉤金具３，３，…の先端を溝９，９，…から回動させてグレーチング４の外周部１４と略直角方向になるように配置する。そして、前記各自在鉤金具３の下面のステンレス板の底面が受枠２８の分岐部２０の上面に載置されると共に各自在鉤金具３の先端側に突出する鉤部１３の一部側面が受枠２８の分岐部２０の内周面に当接され、マンホール用仮蓋１はグレーチング４の大きさ以上の大型のマンホールの受枠１８に確実に設置される。 8 and 9 show a manhole temporary cover 1 installed on a receiving frame 28 of a large manhole, and the tips of the universal metal fittings 3, 3,... Are rotated from the grooves 9, 9,. It arrange | positions so that it may become a substantially orthogonal direction with the outer peripheral part 14. FIG. Then, the bottom surface of the stainless steel plate on the lower surface of each universal metal fitting 3 is placed on the upper surface of the branch portion 20 of the receiving frame 28, and a part of the side surface of the flange 13 protruding to the distal end side of each universal metal fitting 3 is the receiving frame 28. The manhole temporary lid 1 is brought into contact with the inner peripheral surface of the branching portion 20, and is surely installed on the receiving frame 18 of a large manhole larger than the size of the grating 4.
１ マンホール用仮蓋
２ 仮蓋本体
３ 自在鉤金具
４ グレーチング
５ 換気ダクト孔
６ ケーブル導入孔
８，１８，２８ 受枠
９ 溝
1 Temporary lid for manhole 2 Temporary lid body 3 Swivel bracket 4 Grating 5 Ventilation duct hole 6 Cable introduction hole 8, 18, 28 Receiving frame 9 Groove
Claims (1)
In a manhole temporary cover provided with a ventilation duct hole, a cable introduction hole, and a plurality of light incident holes, the temporary cover body is formed of a reinforced plastic grating containing glass fiber, and a plurality of flexible frames corresponding to receiving frames are provided in the vicinity of the outer periphery of the grating. A manhole temporary cover, characterized in that a metal fitting and a groove for allowing the end of each universal metal fitting to stand by in the grating are provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007041842A JP2008202359A (en) | 2007-02-22 | 2007-02-22 | Temporary cover for manhole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007041842A JP2008202359A (en) | 2007-02-22 | 2007-02-22 | Temporary cover for manhole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2008202359A true JP2008202359A (en) | 2008-09-04 |
Family
ID=39780141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2007041842A Pending JP2008202359A (en) | 2007-02-22 | 2007-02-22 | Temporary cover for manhole |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6340130B1 (en) * | 2017-11-13 | 2018-06-06 | ミラクルグリーン株式会社 | Manhole air duct installation device |
| GB2562600A (en) * | 2017-04-25 | 2018-11-21 | Tate Craig | Ventilation cover and method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6327565U (en) * | 1986-07-31 | 1988-02-23 | ||
| JPH05280066A (en) * | 1992-03-27 | 1993-10-26 | Komiya Koki Kk | Manhole cover for construction |
| JPH0835236A (en) * | 1994-07-22 | 1996-02-06 | Suehiro Yakushinji | Support device of ventilation fan for construction work |
| JP2002212968A (en) * | 2001-01-23 | 2002-07-31 | Mitsubishi Plastics Ind Ltd | Locking-type protective cover |
| JP2003105789A (en) * | 2001-09-28 | 2003-04-09 | Ishigaki Seiko:Kk | Manhole temporary cover |
| JP2006045963A (en) * | 2004-08-06 | 2006-02-16 | Sk Trading:Kk | Temporary cover body for opening provided in sewer pipeline |
| JP2006194055A (en) * | 2005-01-11 | 2006-07-27 | Ota Kensetsu Kk | Temporary manhole cover |
-
2007
- 2007-02-22 JP JP2007041842A patent/JP2008202359A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6327565U (en) * | 1986-07-31 | 1988-02-23 | ||
| JPH05280066A (en) * | 1992-03-27 | 1993-10-26 | Komiya Koki Kk | Manhole cover for construction |
| JPH0835236A (en) * | 1994-07-22 | 1996-02-06 | Suehiro Yakushinji | Support device of ventilation fan for construction work |
| JP2002212968A (en) * | 2001-01-23 | 2002-07-31 | Mitsubishi Plastics Ind Ltd | Locking-type protective cover |
| JP2003105789A (en) * | 2001-09-28 | 2003-04-09 | Ishigaki Seiko:Kk | Manhole temporary cover |
| JP2006045963A (en) * | 2004-08-06 | 2006-02-16 | Sk Trading:Kk | Temporary cover body for opening provided in sewer pipeline |
| JP2006194055A (en) * | 2005-01-11 | 2006-07-27 | Ota Kensetsu Kk | Temporary manhole cover |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2562600A (en) * | 2017-04-25 | 2018-11-21 | Tate Craig | Ventilation cover and method |
| JP6340130B1 (en) * | 2017-11-13 | 2018-06-06 | ミラクルグリーン株式会社 | Manhole air duct installation device |
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