JP4234706B2 - 飛跳防止型マンホール二重蓋装置 - Google Patents
飛跳防止型マンホール二重蓋装置 Download PDFInfo
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- JP4234706B2 JP4234706B2 JP2005294065A JP2005294065A JP4234706B2 JP 4234706 B2 JP4234706 B2 JP 4234706B2 JP 2005294065 A JP2005294065 A JP 2005294065A JP 2005294065 A JP2005294065 A JP 2005294065A JP 4234706 B2 JP4234706 B2 JP 4234706B2
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- lid
- valve
- manhole
- valve seat
- butterfly valve
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Description
β…東一型飛跳防止用鉄蓋受枠
γ…GLV型マンホール蓋装置の底蓋
1、c1…上外蓋
11…ロッククランプ
12…ボルト
13…ゴム栓
2…底蓋
21…上端鍔縁
22…底面
23…弁座口
24…軸受
25…支持棒
26、b1…胴壁部
3…蓋受枠
31…中間縮径板部
32…ロック凹部
4…蝶弁
41…支片
42…ストッパー
5…把手
A…最低内外縁側
A’…最高内外縁側
b2…ゴムフラップ取付開口部
b3…転落防止ネット取付部
b4…空洞部
b5…フラップ
I…内側
I’…マンホール蓋環状上側
c2…放落弁
c3…排圧弁
c4…重錘
c5…把手
Claims (3)
- 地上道路面に開口するマンホール入り口内に、埋嵌設置した蓋受枠内の上部に載嵌する上外蓋と、当該蓋受枠内に抜上可能に上端を係止して嵌挿し、かつ一方向に傾斜した底面に広い範囲に亙って貫設する弁座口に蝶弁を回転角軌制可能に取り付けた有底円筒状底蓋とを備え、
前記弁座口と前記蝶弁は、前記底蓋底面中心より最低縁側に中心を偏寄して配置し、
前記蝶弁の閉弁時の下面に、雨水や土砂等の定量放落開弁のために当該蝶弁の所要の逆方向回転力に抗する重量を持つストッパーを突設して、当該ストッパー先端が、前記弁座口最高内縁下側に掛止可能とし、逆方向回転角を規制する、
ことを特徴とする飛跳防止型マンホール二重蓋装置。 - 前記蝶弁は、
半部低側外縁を前記弁座口半部低側内縁より大きくとって、当該半部低側外縁が当該弁座口半部低側内縁下側に当接閉弁可能とするとともに、
半部高側外縁を前記弁座口半部高側内縁より小さくとって、閉弁時当該半部高側外縁が、当該弁座口半部高側内縁内側に臨むよう形成して、正方向回転角を規制する、
ことを特徴とする請求項1に記載の飛跳防止型マンホール二重蓋装置。 - 前記底蓋は、
プラスチック、強化プラスチック又はアルミニウムを素材とし、
前記蝶弁は、プラスチック、強化プラスチック、アルミニウム又はステンレススチール素材とする、
ことを特徴とする請求項1又は2に記載の飛跳防止型マンホール二重蓋装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005294065A JP4234706B2 (ja) | 2005-10-06 | 2005-10-06 | 飛跳防止型マンホール二重蓋装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005294065A JP4234706B2 (ja) | 2005-10-06 | 2005-10-06 | 飛跳防止型マンホール二重蓋装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007100451A JP2007100451A (ja) | 2007-04-19 |
JP4234706B2 true JP4234706B2 (ja) | 2009-03-04 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2005294065A Active JP4234706B2 (ja) | 2005-10-06 | 2005-10-06 | 飛跳防止型マンホール二重蓋装置 |
Country Status (1)
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JP (1) | JP4234706B2 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4815393B2 (ja) * | 2007-05-15 | 2011-11-16 | 有限会社エマージェンシー | マンホールの蓋装置 |
KR101067610B1 (ko) | 2009-08-13 | 2011-09-27 | 이병상 | 힌지형 승강구조를 가지는 이중맨홀뚜껑 |
JP6083759B2 (ja) * | 2014-07-31 | 2017-02-22 | 有限会社エマージェンシー | 地下空間構造物の開口部蓋構造 |
CN112012312A (zh) * | 2020-08-28 | 2020-12-01 | 秭归县沙镇溪建筑有限责任公司 | 一种市政雨污水管道用检查井 |
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2005
- 2005-10-06 JP JP2005294065A patent/JP4234706B2/ja active Active
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JP2007100451A (ja) | 2007-04-19 |
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