JPH0242755B2 - - Google Patents
Info
- Publication number
- JPH0242755B2 JPH0242755B2 JP57194168A JP19416882A JPH0242755B2 JP H0242755 B2 JPH0242755 B2 JP H0242755B2 JP 57194168 A JP57194168 A JP 57194168A JP 19416882 A JP19416882 A JP 19416882A JP H0242755 B2 JPH0242755 B2 JP H0242755B2
- Authority
- JP
- Japan
- Prior art keywords
- manhole cover
- manhole
- mounting bracket
- rotated
- cover
- 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 - Lifetime
Links
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Description
【発明の詳細な説明】
本発明はマンホールカバーの開閉操作を簡単に
したマンホールカバーの開閉装置に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a manhole cover opening/closing device that simplifies the opening/closing operation of the manhole cover.
従来のマンホールカバーの開閉は、マンホール
カバーの軸支部を中心にして上方に回動させてい
たため、マンホールを開口させたときにはマンホ
ールカバーが上方に大きく突出し、このため積込
口が低い場合にはこのマンホールカバーが積込口
に当るなどマンホールカバーの開閉が困難となる
問題があつた。 Conventional manhole covers were opened and closed by rotating upwards around the shaft of the manhole cover, which caused the manhole cover to protrude significantly upwards when the manhole was opened. There were problems with opening and closing the manhole cover, such as the manhole cover hitting the loading port.
本発明は前記問題を解決すべく、マンホールカ
バーを平行リンクにより水平状態で旋回軸に近づ
けた位置に上昇させ、この状態でマンホールカバ
ーを水平旋回させることによりマンホールを開口
させるようにしたものである。以下本発明の実施
例を図面について説明すると１は粉粒体などを収
容する容器２上部に開口したマンホールで、この
マンホール１の縁には環状の縁金３を設けてあ
る。 In order to solve the above problem, the present invention raises the manhole cover horizontally to a position close to the pivot axis using a parallel link, and in this state, the manhole cover is horizontally rotated to open the manhole. . Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a manhole opening at the top of a container 2 for storing powder and granules, and an annular rim 3 is provided at the edge of this manhole 1.
４はマンホール１を覆うマンホールカバーで、
このマンホールカバー４の周縁部下面には縁金３
の上面に当接するパツキン５が埋設されている。 4 is a manhole cover that covers manhole 1,
A rim 3 is provided on the lower surface of the periphery of this manhole cover 4.
A gasket 5 is buried in contact with the upper surface of.
６はマンホールカバー４の中央部に設けた締付
部を示し、この締付部６を具体的に説明するとマ
ンホールカバー４の中央部にねじ軸７が垂設さ
れ、ねじ軸７にはハンドル８により回転させられ
る押圧ねじ管(9)が螺合されている。押圧ねじ管９
上には後述する締付アーム１０，１０，１０の先
端に係合する係合爪１１，１１，１１を三方向に
突設した押下環１２が回転自在に設けられてい
る。 Reference numeral 6 indicates a tightening part provided in the center of the manhole cover 4. To explain this tightening part 6 in detail, a screw shaft 7 is vertically installed in the center of the manhole cover 4, and a handle 8 is attached to the screw shaft 7. A press threaded pipe (9) rotated by is screwed together. Pressure screw pipe 9
A push-down ring 12 is rotatably provided on the top with engagement claws 11, 11, 11 protruding in three directions that engage with the tips of tightening arms 10, 10, 10, which will be described later.
前記締付アーム１０，１０，１０はマンホール
カバー４の中心部に向つて延び、その基部はマン
ホール１に近接する容器２上に等間隔をもつて上
方回動自在に軸支１３，１３，１３され、その基
部側の下面にはマンホールカバー４の縁面に当接
する押圧突起１４……が設けられている。 The tightening arms 10, 10, 10 extend toward the center of the manhole cover 4, and their bases are pivotably supported 13, 13, 13 at equal intervals above the container 2 adjacent to the manhole 1 so as to be able to rotate upwardly. A pressing protrusion 14 that comes into contact with the edge surface of the manhole cover 4 is provided on the lower surface of the base side thereof.
１５はマンホールカバー４を支持する支持ブラ
ケツトで、この支持ブラケツト１５の基部はマン
ホールカバー４の周縁部に固着され、その先部は
後方に突出している。 A support bracket 15 supports the manhole cover 4. The base of the support bracket 15 is fixed to the peripheral edge of the manhole cover 4, and the tip thereof protrudes rearward.
１６は前記支持ブラケツト１５に対応するマン
ホール１後方の容器２上に設けた取付ブラケツト
でこの取付ブラケツト１６は容器２上に垂設した
旋回軸１７にて回転する回転筒１８に取付けら
れ、取付ブラケツト１６と前記支持ブラケツト１
５間には上部リンク１９と下部リンク２０とがそ
れぞれ軸支２１，２２，２３，２４され、この軸
支点２１，２２，２３，２４は平行四辺形を形成
して前記上下リンク１９，２０の回動によりマン
ホールカバー４を水平状にして上昇させることが
でき、第２図の二点鎖線で示す前記旋回軸１７に
近づいた位置まで上昇させたとき、各上下リンク
１９，２０の支持ブラケツト１５側の軸支部２
３，２４は、取付ブラケツト１６側の軸支部２
１，２２の中心を通る垂線より少し後方に位置
し、このとき下部リンク２０とマンホールカバー
４の縁とが当接して、これ以上の後方移動は防止
される。 Reference numeral 16 denotes a mounting bracket provided on the container 2 at the rear of the manhole 1 corresponding to the support bracket 15. 16 and the support bracket 1
5, an upper link 19 and a lower link 20 are pivoted 21, 22, 23, 24, respectively, and the pivot points 21, 22, 23, 24 form a parallelogram to support the upper and lower links 19, 20. The manhole cover 4 can be raised horizontally by rotation, and when raised to a position close to the pivot shaft 17 shown by the two-dot chain line in FIG. side shaft support 2
3 and 24 are the shaft supports 2 on the mounting bracket 16 side.
1 and 22, and at this time, the lower link 20 and the edge of the manhole cover 4 come into contact to prevent further backward movement.
尚、２５，２６は軸支部２１，２２に設けられ
て上部リンク１９及び下部リンク２０を反時計方
向の後方に附勢したスプリングで、マンホールカ
バー４の持上げを助ける。２７は第１図の実線で
示すマンホールカバー４を略135度回動させた位
置に停止させるストッパピンで、このストツパピ
ン２７は取付ブラケツト１６の下部に当接する。 Incidentally, springs 25 and 26 are provided on the shaft supports 21 and 22 and bias the upper link 19 and the lower link 20 backward in the counterclockwise direction, and help lift the manhole cover 4. Reference numeral 27 denotes a stopper pin for stopping the manhole cover 4 at a rotated position of approximately 135 degrees, as shown by the solid line in FIG.
本発明は以上の構成で、マンホール１がマンホ
ールカバー４にて閉鎖されている状態よりマンホ
ール１を開放させる操作について説明すると先ず
ハンドル８にて押圧ねじ管９を回転させて押圧ね
じ管９を上昇させると、係合爪１１……と締付ア
ーム１０……との係合が外れ、これにより締付ア
ーム１０……を基部の軸支部１３……を中心にし
て外側に回動させる。次にハンドル８を握つてマ
ンホールカバー４を持上げると、上下リンク１
９，２０は軸支部２１，２２を中心にして二点鎖
線位置まで回動し、このときマンホールカバー４
は上下リンク１９，２０に支持されて水平を保つ
て上昇する。マンホールカバー４が上昇すると、
パツキン５と縁金３とは離れ、このときにマンホ
ールカバー４を旋回軸１７を中心にして略135度
水平旋回させると、マンホール１は開放されるこ
とになる。 The present invention has the above configuration, and to explain the operation of opening the manhole 1 from a state where the manhole 1 is closed with the manhole cover 4, first, the push screw pipe 9 is rotated with the handle 8 and the push screw pipe 9 is raised. When this is done, the engagement claws 11... and the tightening arms 10... are disengaged, thereby causing the tightening arms 10... to rotate outward about the shaft supports 13... at the base. Next, grasp the handle 8 and lift the manhole cover 4, and the vertical link 1
9 and 20 rotate around the shaft supports 21 and 22 to the position indicated by the two-dot chain line, and at this time the manhole cover 4
is supported by the upper and lower links 19 and 20 and rises while maintaining the horizontal position. When the manhole cover 4 rises,
The gasket 5 and the rim 3 are separated, and at this time the manhole cover 4 is horizontally turned approximately 135 degrees about the pivot shaft 17, and the manhole 1 is opened.
本発明は以上の如く、マンホールカバーを平行
リンクで支持するとともに平行リンクを取付ける
取付ブラケツトを水平旋回できるようにしたた
め、マンホールカバーの開放作業としてはマンホ
ールカバーを少し浮かして水平回動させるため、
重いマンホールカバーを大角度上方に回動させる
従来と比べて、開閉作業が非常に楽となり、さら
にマンホール開口時のマンホールカバーの地上高
は低くなり、積込口の低い場所でもマンホールの
開閉が可能となる。又、マンホールカバーの旋回
時にパツキンがマンホールの縁金にこすられない
ので、パツキンの寿命を長くすることができる。
又、マンホールカバーを旋回軸に近づけて旋回さ
せるので、マンホールカバーの旋回半径が小さく
なり、旋回軸にかかる負担が小さくなるとともに
旋回作業を容易にしている。 As described above, in the present invention, the manhole cover is supported by the parallel links, and the mounting bracket to which the parallel links are attached can be rotated horizontally.In order to open the manhole cover, the manhole cover is lifted slightly and rotated horizontally.
Compared to the conventional method, in which a heavy manhole cover is rotated upward at a large angle, opening and closing work is much easier.Furthermore, the ground clearance of the manhole cover when the manhole is opened is lower, making it possible to open and close the manhole even in low loading locations. becomes. Furthermore, since the gasket does not rub against the edge of the manhole when the manhole cover turns, the life of the gasket can be extended.
Furthermore, since the manhole cover is rotated close to the rotation axis, the radius of rotation of the manhole cover is reduced, the load on the rotation axis is reduced, and the rotation work is facilitated.
更にマンホールカバーの旋回半径が小さいの
で、マンホールカバーの旋回範囲が狭くてよく、
旋回範囲以外には架装物を架装しても当たること
がない。 Furthermore, since the turning radius of the manhole cover is small, the turning range of the manhole cover is narrow.
Even if you mount a mounted object outside of the turning range, it will not hit you.
第１図は本発明装置の平面図、第２図は第１図
のＡ−Ａ断面図、第３図は従来の装置を示す断面
図である。
１はマンホール、２は容器、４はマンホールカ
バー、８はハンドル、１５は支持ブラケツト、１
６は取付ブラケツト、１９，２０はリンク。
FIG. 1 is a plan view of the device of the present invention, FIG. 2 is a sectional view taken along the line AA in FIG. 1, and FIG. 3 is a sectional view showing the conventional device. 1 is a manhole, 2 is a container, 4 is a manhole cover, 8 is a handle, 15 is a support bracket, 1
6 is the mounting bracket, 19 and 20 are links.
Claims (1)
央部に設けられてマンホールカバーを押圧する締
付用のハンドルと、マンホールカバーの周縁部に
マンホールカバーと一体状に設けた支持ブラケツ
トと、マンホールに近接する容器上に設けられて
旋回軸を中心にして水平旋回する取付ブラケツト
と、前記支持ブラケツトと前記取付ブラケツト間
に連結されてマンホールカバーを水平状態に保持
する上下一対の平行リンクとから構成され、前記
平行リンクが略水平位置から垂直位置より後方位
置に回動することにより前記マンホールカバーは
水平状態で前記旋回軸に近づいた位置に上昇させ
られ、更にマンホールカバーは取付ブラケツトの
旋回により水平状態のまま旋回させられるように
したマンホールカバーの開閉装置。1. A tightening handle provided in the center of the manhole cover that closes the manhole to press the manhole cover, a support bracket provided integrally with the manhole cover at the periphery of the manhole cover, and a handle on the container near the manhole. A mounting bracket is provided on the manhole cover and horizontally pivots around a pivot axis, and a pair of upper and lower parallel links are connected between the support bracket and the mounting bracket to hold the manhole cover in a horizontal state, and the parallel links are is rotated from a substantially horizontal position to a rearward position from a vertical position, whereby the manhole cover is raised in a horizontal state to a position close to the pivot axis, and the manhole cover is further rotated in a horizontal state by rotation of the mounting bracket. A manhole cover opening/closing device designed to allow
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57194168A JPS5984786A (en) | 1982-11-04 | 1982-11-04 | Switchgear for manhole cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57194168A JPS5984786A (en) | 1982-11-04 | 1982-11-04 | Switchgear for manhole cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5984786A JPS5984786A (en) | 1984-05-16 |
| JPH0242755B2 true JPH0242755B2 (en) | 1990-09-25 |
Family
ID=16320055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57194168A Granted JPS5984786A (en) | 1982-11-04 | 1982-11-04 | Switchgear for manhole cover |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5984786A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015117573A (en) * | 2014-07-25 | 2015-06-25 | 新明和工業株式会社 | Opening and closing device of manhole cover |
| JP2015117032A (en) * | 2013-12-17 | 2015-06-25 | 新明和工業株式会社 | Opening/closing device of manhole cover |
| KR20170026589A (en) * | 2014-07-03 | 2017-03-08 | 베이어 마린 컴퍼니 인코포레이티드 | Manway cover |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103449066A (en) * | 2013-09-06 | 2013-12-18 | 北汽福田汽车股份有限公司 | Man-hole cover mounting structure and storage tank |
| JP6623732B2 (en) * | 2015-12-11 | 2019-12-25 | 日油株式会社 | Explosive loading machine |
| KR102641837B1 (en) * | 2023-08-09 | 2024-02-27 | 신봉호 | Apparatus for opening and closing manhole of a bulk cement trailer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55145494U (en) * | 1979-04-06 | 1980-10-18 | ||
| JPS5749017Y2 (en) * | 1979-10-16 | 1982-10-27 |
-
1982
- 1982-11-04 JP JP57194168A patent/JPS5984786A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015117032A (en) * | 2013-12-17 | 2015-06-25 | 新明和工業株式会社 | Opening/closing device of manhole cover |
| KR20170026589A (en) * | 2014-07-03 | 2017-03-08 | 베이어 마린 컴퍼니 인코포레이티드 | Manway cover |
| JP2015117573A (en) * | 2014-07-25 | 2015-06-25 | 新明和工業株式会社 | Opening and closing device of manhole cover |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5984786A (en) | 1984-05-16 |
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