JPH042214Y2 - - Google Patents
Info
- Publication number
- JPH042214Y2 JPH042214Y2 JP16618886U JP16618886U JPH042214Y2 JP H042214 Y2 JPH042214 Y2 JP H042214Y2 JP 16618886 U JP16618886 U JP 16618886U JP 16618886 U JP16618886 U JP 16618886U JP H042214 Y2 JPH042214 Y2 JP H042214Y2
- Authority
- JP
- Japan
- Prior art keywords
- lid
- receiving frame
- bolt
- cover
- stopper
- 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 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000002159 abnormal effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
【考案の詳細な説明】
「産業上の利用分野」
この考案は構造が簡単で且つマンホール等の地
下構造物内に発生した異常内圧による蓋の飛散防
止のための構造に関するものである。[Detailed Description of the Invention] "Industrial Application Field" This invention is simple in structure and relates to a structure for preventing lids from scattering due to abnormal internal pressure generated in underground structures such as manholes.
「従来の技術」
従来マンホールその他一般の地下構造物用蓋は
単に、かぶせたもの、ボルト締めで固定したも
の、蝶番式のもの等が使用されていて、それぞ
れ、それなりの特徴は有しているものの、一長一
短あり、特に地下構造物内に発生した異常内圧に
対しては、特別の対策はなされておらず蓋が飛散
したり、構造物自体を、破損する等の欠点があつ
た。``Conventional technology'' Conventionally, covers for manholes and other general underground structures have been simply covered, fixed with bolts, hinged, etc., and each has its own characteristics. However, there are advantages and disadvantages, and in particular, no special measures were taken against the abnormal internal pressure that occurred within the underground structure, resulting in drawbacks such as the lid flying off and the structure itself being damaged.
「問題点を解決するための手段」
そこでこの考案は、上記欠点を除去するために
なされたもので、その要旨を説明すると、蓋と受
枠とは、定張力ボルトで固定し、ある限度以上の
内圧に対しては、このボルトは切断する構造とす
る。ボルトが切断すれば蓋は浮上しそのため内圧
は減圧される。別に蓋には、蓋飛散防止用連結杆
を設けて受枠と連結し、蓋が一定高さ以上浮上し
ないよう制限し、蓋の飛散防止を行う構造とす
る。``Means for Solving the Problems'' Therefore, this invention was devised to eliminate the above-mentioned drawbacks. To explain the gist, the lid and the receiving frame are fixed with constant tension bolts, and the This bolt is designed to break against internal pressure. When the bolt is cut, the lid floats up and the internal pressure is reduced. Separately, the lid is provided with a connecting rod to prevent the lid from flying off, which is connected to the receiving frame to restrict the lid from floating above a certain height, thereby preventing the lid from flying off.
「実施例」
以下本考案の一実施例を図面に基ずき説明する
と、蓋１と受枠２とを固定するため、１の周縁部
に定張力ボルト３を設け蓋と受枠内の突設部４と
を連結し固定する。この定張力ボルトは、地下構
造物内の内圧が或る限度以上になれば切断し、安
全弁的役目を果たすものであり、これにより異常
内圧が減圧される。更に定張力ボルト切断時の、
蓋飛散防止用として連結杆５を設け、蓋と受枠内
の突設ストツパー６とを、上下に動き得る状態で
係止し蓋が一定高さ以上浮上しないよう連結杆５
の浮上高さを、ストツパー６で制限する。従つて
蓋は受枠から離脱することはあり得るが、それ以
上飛散することはない。``Embodiment'' An embodiment of the present invention will be described below based on the drawings. In order to fix the lid 1 and the receiving frame 2, a constant tension bolt 3 is provided on the periphery of the lid 1 and the protruding part in the receiving frame. Connect and fix 4. This constant tension bolt disconnects when the internal pressure within the underground structure exceeds a certain limit, acting as a safety valve, thereby reducing abnormal internal pressure. Furthermore, when cutting constant tension bolts,
A connecting rod 5 is provided to prevent the lid from scattering, and the connecting rod 5 locks the lid and a protruding stopper 6 in the receiving frame so that it can move up and down, and prevents the lid from floating above a certain height.
The flying height is limited by a stopper 6. Therefore, although it is possible for the lid to separate from the receiving frame, it will not fly away any further.
図中７はスプリングを示し蓋１の浮上時の緩衝
用であり、ゴムでもよい。 In the figure, numeral 7 indicates a spring, which serves as a buffer when the lid 1 floats, and may be made of rubber.
「考案の効果」
以上説明したように、本考案の地下構造物用蓋
の飛散防止構造は、地下構造物内で、ガス爆発あ
るいは溢水等による異常内圧が発生した場合蓋及
び地下構造物の破損を防止し、且つ蓋の飛散を防
止し、常時は蓋のガタツキを防止出来る等、幾多
の効果を発揮するものである。"Effect of the invention" As explained above, the scattering prevention structure of the lid for underground structures of the present invention can cause damage to the lid and underground structure if abnormal internal pressure occurs due to a gas explosion or water overflow inside the underground structure. It has many effects, such as preventing the lid from scattering, and preventing the lid from rattling at all times.
図面は本考案の一実施例を示し、第１図は蓋及
び受枠の組立平面図、第２図は蓋及び受枠の組立
立面断面図、第３図は定張力ボルト及びその取付
部の図、第４図は飛散防止用連結杆及びその取付
部の図、第５図は蓋浮上の状態を示す立面断面
図。
１……蓋、２……受枠、３……定張力ボルト、
４……受枠内突設部、５……飛散防止用連結杆、
６……突設ストツパー、７……スプリング、８…
…キヤツプ、９……受枠基礎ボルト。
The drawings show one embodiment of the present invention; Fig. 1 is an assembled plan view of the lid and receiving frame, Fig. 2 is an assembled elevational sectional view of the lid and receiving frame, and Fig. 3 is a diagram of a constant tension bolt and its attachment part. , FIG. 4 is a diagram of a connecting rod for preventing scattering and its attachment part, and FIG. 5 is an elevational sectional view showing a state in which the lid is floating. 1... Lid, 2... Receiving frame, 3... Constant tension bolt,
4... Protrusion inside the receiving frame, 5... Connecting rod for preventing scattering,
6... Protruding stopper, 7... Spring, 8...
... Cap, 9... Receiving frame foundation bolt.
Claims (1)
された蓋１とからなる地下構造物の蓋において イ 蓋１の周縁部に定張力ボルト３を設けて、蓋
と、受枠２内の突設部４とを連結固定し、或る
限度以上の内圧に対しては、ボルト３は、切断
する構造とし ロ 別に蓋１の周縁部に、蓋の飛散防止用連結杆
５を相対向側に複数個設けて、蓋と受枠内のス
トツパー６とを、上下に動き得る状態で係止
し、蓋１がボルト３の切断により浮上した場合
は一定高さ以上浮上しないよう、連結杆５の浮
上高さをストツパー６で制限することを特徴と
する地下構造物用蓋の飛散防止構造。[Scope of Claim for Utility Model Registration] In the cover of an underground structure consisting of a receiving frame 2 and a cover 1 which fits into the receiving frame and is arranged to be openable and closable, (a) constant tension bolts 3 are provided at the peripheral edge of the cover 1; , the lid and the protrusion 4 in the receiving frame 2 are connected and fixed, and the bolt 3 is structured to break when the internal pressure exceeds a certain limit. A plurality of connecting rods 5 are provided on opposing sides to lock the lid and a stopper 6 in the receiving frame in a state where they can move up and down, and when the lid 1 floats up due to the cutting of the bolt 3, it is fixed at a certain height or more. This scattering prevention structure for a lid for an underground structure is characterized in that the floating height of a connecting rod 5 is limited by a stopper 6 so as not to float.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16618886U JPH042214Y2 (en) | 1986-10-29 | 1986-10-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16618886U JPH042214Y2 (en) | 1986-10-29 | 1986-10-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6371249U JPS6371249U (en) | 1988-05-13 |
| JPH042214Y2 true JPH042214Y2 (en) | 1992-01-24 |
Family
ID=31096920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16618886U Expired JPH042214Y2 (en) | 1986-10-29 | 1986-10-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH042214Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4964667B2 (en) * | 2007-05-16 | 2012-07-04 | 公益財団法人鉄道総合技術研究所 | Lid with excessive internal pressure release valve |
-
1986
- 1986-10-29 JP JP16618886U patent/JPH042214Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6371249U (en) | 1988-05-13 |
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