JP2599023Y2 - Positioning device for PVC small manhole - Google Patents
Positioning device for PVC small manholeInfo
- Publication number
- JP2599023Y2 JP2599023Y2 JP1992081546U JP8154692U JP2599023Y2 JP 2599023 Y2 JP2599023 Y2 JP 2599023Y2 JP 1992081546 U JP1992081546 U JP 1992081546U JP 8154692 U JP8154692 U JP 8154692U JP 2599023 Y2 JP2599023 Y2 JP 2599023Y2
- Authority
- JP
- Japan
- Prior art keywords
- manhole
- small
- pvc
- diameter
- level body
- 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 - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本考案は、塩ビ製小口径マンホー
ルの位置決め装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a positioning device for a small-diameter PVC manhole.
【０００２】[0002]
【従来の技術とその課題】周知のごとく、マンホールや
会所ますは排水管の合流点、屈曲管、勾配変化点または
管径変化点等に設置されて、管きょの点検出および掃除
を行うようにしている。2. Description of the Related Art As is well known, a manhole or a meeting place is installed at a junction of a drain pipe, a bent pipe, a change point of a slope or a change point of a pipe diameter, and performs point detection and cleaning of a pipe. Like that.
【０００３】ところで、下水道の普及に伴い、下水本管
が狭小道路にも埋設されるようになり、人の出入り可能
を原則とするコンクリート製マンホールでは大き過ぎ
て、その埋設が困難となり、また、下水本管に塩ビ製パ
イプが採用されてから、コンクリート製マンホールとの
接続が困難となったので、コンクリート製マンホールに
代り、塩ビ製マンホールの出現が要請されている。By the way, with the spread of sewers, sewage mains have been buried even in narrow roads, and concrete manholes that allow humans to enter and exit are too large, making it difficult to bury them. Since the use of PVC pipes for sewage mains has made it difficult to connect to concrete manholes, the emergence of PVC manholes has been required instead of concrete manholes.
【０００４】そこで本出願人は、かかる要請に応えるた
め、従来、実施している塩ビ製会所ますの技術を踏まえ
て、塩ビ製小口径マンホール（ごく大雑把にいえば、会
所ますをスケールアップしたもの、例えば、点検筒の口
径３００ｍｍφとしたもの）の開発を行ったところ、次
のような問題点を発見した。[0004] In order to respond to such a request, the applicant of the present invention has made a small-caliber PVC manhole (in a very rough scale, based on the technology of the PVC workshop masquerade that has been conventionally implemented). For example, when the diameter of the inspection cylinder was set to 300 mmφ ), the following problems were found.
【０００５】すなわち、下水道管きょは半永久的に使わ
れ、原則として公道下に深く埋設されるものであること
から、使用する部材の品質は厳しくチエックされるのは
勿論、下水道本管は自然流下方式であるため、厳しい施
工精度が要求される。したがって、塩ビ製マンホールに
なっても、これらの厳しい品質や施工精度に対応しなけ
ればならない。That is, since sewer pipes are used semi-permanently and are generally buried deep under public roads, the quality of the materials used is strictly checked, and the sewer main pipes are naturally used. Due to the flow-down method, strict construction accuracy is required. Therefore, even if it becomes a PVC manhole, it is necessary to cope with these severe quality and construction accuracy.
【０００６】しかしながら、塩ビ製小口径マンホール
は、現場に合せて構築するコンクリート製マンホールと
違い、工場において大量生産され、寸法精度の高い既製
品であるが、塩ビ製小口径マンホール単独では、多種多
様の屈曲方向や合流方向をもつ下水道管きょ現場に適応
しにくい、という問題があった。[0006] However, unlike small-sized manholes made of PVC, unlike small-sized manholes made of PVC, which are mass-produced at the factory and have high dimensional accuracy, small-sized manholes made of PVC alone have a wide variety of properties. There is a problem that it is difficult to adapt to the sewer pipe site having a bending direction and a merging direction.
【０００７】そのため、本出願人は、図４に示すような
自在継手Ａを塩ビ製小口径マンホールに付設して、かか
る問題を解消しようと試みた。For this reason, the present applicant has attempted to solve such a problem by attaching a universal joint A as shown in FIG. 4 to a small-diameter manhole made of PVC.
【０００８】この塩ビ製自在継手Ａを説明する。上流側
受口部１と下流側差口部２とを接合するに当り、上流側
受口部１の下流端を管軸直交線より下流側に１５゜傾斜
した切口３で構成し、下流側差口部２の上流端を、この
切口３に合せて構成する。また、上流側受口部１の下流
端の外周に、前記切口３に直交した中心線４をもつ雄円
筒体５を設け、下流側差口部２の上流端の外周に、この
中心線４をもつ雌円筒体６を設ける。そして、これらの
円筒体５，６を複数の凹凸溝嵌合７させて、中心線４を
中心に回動可能とする。したがって、上、下流側受口・
差口部１，２を互に回動させると、それぞれの軸線ａ，
ｂが１５゜以内で交叉することになって、１５゜以内の
屈折が可能となる。The PVC universal joint A will be described. In joining the upstream side port 1 and the downstream side port 2, the downstream end of the upstream side port 1 is constituted by a cut 3 inclined by 15 ° to the downstream side from the pipe axis orthogonal line, and the downstream side The upstream end of the spigot 2 is configured to match this cut 3. A male cylinder 5 having a center line 4 orthogonal to the cut 3 is provided on the outer periphery of the downstream end of the upstream-side receiving portion 1. Is provided. Then, these cylindrical bodies 5 and 6 are fitted into a plurality of concave and convex grooves 7 so as to be rotatable about the center line 4. Therefore, the upstream and downstream
When the spigots 1 and 2 are rotated with respect to each other, the respective axes a,
Since b crosses within 15 °, refraction within 15 ° is possible.
【０００９】しかしながら、かかる自在継手Ａを備えた
小口径マンホールＢでは、図３に示すように、これを上
流側下水本管１０と下流側下水本管１１との、マンホー
ル設置位置のための測量による屈曲点（以下、測量点と
いう）Ｐに設置しようとしても、この小口径マンホール
Ｂの中心点（点検筒１２の中心点をいう）とこの測量点
Ｐとが一致せず、小口径マンホールＢの位置決めが困難
になる、つまり、施工精度を低下させる、という新しい
問題が判明した。However, in the small-diameter manhole B provided with the universal joint A, as shown in FIG. 3, the small-diameter manhole B is connected to the upstream sewage main pipe 10 and the downstream sewage main pipe 11 for surveying the manhole installation position. The center point of the small-diameter manhole B (referred to as the center point of the inspection tube 12) does not coincide with the survey point P, and the small-diameter manhole B A new problem has been found that makes it difficult to position the workpiece, that is, lowers the construction accuracy.
【００１０】なお、図３の小口径マンホールＢを説明す
る。この小口径マンホールＢは、インバートとして４５
°Ｌの管継手で構成されたもので、したがって、この４
５°曲がりに０〜１５°可変の自在継手Ａを組合せたも
のである。図中、１５は保護鉄蓋を示している。The small diameter manhole B shown in FIG. 3 will be described. This small-diameter manhole B is 45 inverts.
° L fittings.
This is a combination of a universal joint A that can be varied from 0 to 15 ° to a 5 ° bend. In the figure, reference numeral 15 denotes a protective iron cover.
【００１１】[0011]
【課題を解決するための手段】そこで本考案は、前記の
問題点を解決するためになされたもので、その要旨とす
るところは、管外面に載置可能の足を設けた水準器体
に、該水準器体の中央で且つ平面視で水準器体に直交し
た交叉用ロッドを設けて位置決め用治具の１つを構成
し、該位置決め用治具を、マンホールの上流側管外面と
下流側管外面とにそれぞれ載置して、これらの交叉用ロ
ッドを交叉させ、該交叉点を、マンホール設置用測量点
に合せるようにしたことを特徴とする塩ビ製小口径マン
ホールの位置決め装置にある。SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems, and the gist of the present invention is to provide a level body provided with legs mountable on the outer surface of the tube. A crossing rod is provided at the center of the level body and perpendicular to the level body in a plan view to constitute one of the positioning jigs, and the positioning jig is connected to the upstream tube outer surface of the manhole and the downstream side. A small-diameter manhole positioning device made of PVC, which is placed on the outer surface of the side pipe and crosses these crossing rods, and the crossing point is adjusted to the surveying point for manhole installation. .
【００１２】[0012]
【実施例】本考案を添付図面に示す実施例により詳細に
述べる。本実施例の治具２０の１対は、本来、９０°大
曲り管継手をインバートとする塩ビ製小口径マンホール
Ｂに、前述の自在継手Ａを予め付設したものの位置決め
に好適であるが、説明を判りやすくするため、インバー
トとして９０°大曲り管継手で構成した塩ビ製小口径マ
ンホールＢ単独に用いた例で説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in the accompanying drawings. Although one pair of the jigs 20 of the present embodiment is originally suitable for positioning of a small-diameter manhole B made of PVC in which a 90 ° large-bend pipe joint is inverted and the above-mentioned universal joint A is previously attached, In order to make it easier to understand, a description will be given of an example in which a small-diameter manhole B made of PVC alone constituted by a 90 ° large bend pipe joint is used as an invert.
【００１３】図２において、この小口径マンホールＢに
おける上流側の受口２９と下流側受口３０の各管軸線
ｃ，ｄの交点Ｑは、インバート斜面３１にあって、マン
ホールの中心、すなわち、点検筒１２の中心と一致して
いない。したがって、施工時、予め測量された測量点Ｐ
に点検筒１２の中心をもってくると、上、下流側下水本
管１０，１１との喰い違いを生じる。そのため、以下の
治具２０を用いて、この小口径マンホールＢの位置を決
める。In FIG. 2, the intersection Q of the pipe axes c and d of the upstream port 29 and the downstream port 30 in the small-diameter manhole B is located on the invert slope 31 and is located at the center of the manhole. It does not coincide with the center of the inspection tube 12. Therefore, at the time of construction, the survey points P
When the center of the check tube 12 is brought to the center, there is a difference between the upper and lower sewage main pipes 10, 11. Therefore, the position of the small-diameter manhole B is determined using the following jig 20.
【００１４】この治具２０の１つは、４角棒状の水準器
体２１と、この水準器体２１の長辺中心に垂直状に立設
されたポール２２と、このポール２２の頂部に形成され
たスライド孔２３と、このスライド孔２３に水平を保ち
ながら摺動可能に挿入された交叉用ロッド２４と、前記
水準器体２１の下面で、長辺中心に対称的に設けられた
１対の足２５，２５と、から大略構成されている。One of the jigs 20 is a square bar-shaped level 21, a pole 22 erected vertically at the center of the long side of the level 21, and formed on the top of the pole 22. Slide hole 23, a crossing rod 24 slidably inserted into the slide hole 23 while keeping the slide hole 23 horizontal, and a pair of symmetrically provided on the lower surface of the level body 21 at the center of the long side. And the legs 25, 25.
【００１５】この１対の足２５は、受口２９等の管外面
の稜線をまたいで載置されるようになっており、したが
って、足２５の向きは前記スライド孔２３の開口方向と
一致すると共に、ロッド２４の摺動方向とも一致してい
る。The pair of feet 25 are placed so as to straddle the ridge line of the outer surface of the tube such as the receiving port 29 and the like, so that the direction of the feet 25 coincides with the opening direction of the slide hole 23. In addition, the sliding direction of the rod 24 also coincides with the sliding direction.
【００１６】また、水準器体２１には、長辺中心部に目
視用の気泡管２６が埋設されているる。A bubble tube 26 for visual observation is embedded in the center of the long side of the level body 21.
【００１７】そして、以上のように構成された治具２０
を１対を用いて、これらのロッド２４を交叉させ、その
交叉点にオモリ２７を糸２８により懸垂する。The jig 20 constructed as described above
These rods 24 are crossed by using a pair, and a weight 27 is suspended by a thread 28 at the crossing point.
【００１８】次に、本実施例の治具２０の使い方を述べ
る。例えば、図１に示す小口径マンホールＢの上、下流
側の受口２９，３０の管外面に１対の足２５，２５を載
せる。気泡管２６を目視しながら水準器体２１を水平状
態にする。その結果、各ロッド２４が水平状となる。そ
こで、このロッド２４を進退摺動させて交叉させる。こ
の交叉点にオモリ２７を懸垂して、このオモリ２７と測
量点Ｐとが一致するように小口径マンホールＢを移動さ
せる。これが一致すれば、この小口径マンホールＢの設
置位置が定まる。Next, how to use the jig 20 of this embodiment will be described. For example, a pair of feet 25, 25 is placed on the outer surface of the pipes of the receiving ports 29, 30 on the downstream side above the small-diameter manhole B shown in FIG. The level body 21 is set in a horizontal state while viewing the bubble tube 26. As a result, each rod 24 becomes horizontal. Therefore, the rod 24 is moved forward and backward to intersect. The weight 27 is suspended from the intersection, and the small-diameter manhole B is moved so that the weight 27 and the survey point P match. If these coincide, the installation position of the small-diameter manhole B is determined.
【００１９】なお、本実施例の小口径マンホールＢは、
図１に示すものの他、インバートとして径違い４５゜Ｙ
の管継手で構成された小口径マンホールにも適用でき
る。The small-diameter manhole B of this embodiment is:
In addition to the one shown in FIG.
It can also be applied to small-diameter manholes composed of pipe fittings.
【００２０】次に、図３で示す４５°Ｌのインバートを
もつ管継手からなる小口径マンホールＢに、図４で示す
自在継手Ａを予め付設した場合について述べる。一方の
治具２０の足２５を、自在継手Ａのゴム輪受口１ａ上の
２点鎖線３２図示の位置に載置し、他方の治具２０の足
２５を、下流側下水本管１１のゴム輪受口１１ａ上の２
点鎖線３３図示の位置に載置する。そして、水準器体２
１を水平状態に整えて、ロッド２４を互に交叉するよう
に延出させる。その交叉点でオモリ２７を懸垂して、予
め測量されている上流側下水本管軸ｃと下流側下水本管
軸ｄの交点、すなわち測量点Ｐに合せるように小口径マ
ンホールＢを移動させると、この小口径マンホールＢの
位置決めができる。Next, a case will be described in which a universal joint A shown in FIG. 4 is previously attached to a small-diameter manhole B formed of a pipe joint having a 45 ° L invert shown in FIG. The leg 25 of one jig 20 is placed at the position shown by the two-dot chain line 32 on the rubber ring socket 1a of the universal joint A, and the leg 25 of the other jig 20 is 2 on rubber ring socket 11a
It is placed at the position shown by the dotted line 33. And level 2
1 is adjusted to a horizontal state, and the rods 24 are extended so as to cross each other. When the weight 27 is suspended at the intersection, the small-diameter manhole B is moved so as to match the intersection of the upstream-side sewage main axis c and the downstream-side sewage main axis d, which is measured in advance, that is, the survey point P. The positioning of the small-diameter manhole B can be performed.
【００２１】なお、４５°Ｌのインバートに代り、９０
°大曲りのインバートでもよいことは前述のとおりであ
る。なお、ポール２２は板体であってもよく、スタンド
であればいずれでもよい。In place of the 45 ° L invert, 90 °
° It is as described above that a large bend may be used. In addition, the pole 22 may be a plate body or any stand as long as it is a stand.
【００２２】[0022]
【考案の効果】本考案によれば、管外面に合った足のあ
る水準器体に取付けられた交叉用ロッドの１対を用い
て、小口径マンホールの位置決めをするので、大量生産
された既存の小口径マンホールでも、多種多様な屈曲方
向や合流方向のある下水管きょ工事に正確に位置決めし
て用いることができる。つまり、施工精度を向上するこ
とができる。According to the present invention, a small-diameter manhole is positioned by using a pair of crossing rods attached to a level body having feet that match the outer surface of the pipe. Even small-diameter manholes can be accurately positioned and used for sewer works with various bending directions and merging directions. That is, construction accuracy can be improved.
【００２３】しかも、塩ビ製小口径マンホールの位置決
め用治具の１つを、足のある水準器体および交叉用ロッ
ドで構成したから、１対としても安価な治具とすること
ができる。Further, one of the jigs for positioning the small-diameter PVC manhole is constituted by a level body having legs and a crossing rod, so that a pair of inexpensive jigs can be provided.
【図１】本考案の実施例の全体斜視図である。FIG. 1 is an overall perspective view of an embodiment of the present invention.
【図２】図１の要部説明図である。FIG. 2 is an explanatory diagram of a main part of FIG. 1;
【図３】本考案の実施例を用いたものの平面図である。FIG. 3 is a plan view of an embodiment of the present invention.
【図４】図３の要部断面図である。FIG. 4 is a sectional view of a main part of FIG. 3;
２１…水準器体、２４…交叉用ロッド、２５…足、２７
…オモリ21: level body, 24: crossing rod, 25: foot, 27
… Weight
Claims (1)
に、該水準器体の中央で且つ平面視で水準器体に直交し
た交叉用ロッドを設けて位置決め用治具の１つを構成
し、該位置決め用治具を、マンホールの上流側管外面と
下流側管外面とにそれぞれ載置して、これらの交叉用ロ
ッドを交叉させ、該交叉点を、マンホール設置用測量点
に合せるようにしたことを特徴とする塩ビ製小口径マン
ホールの位置決め装置。A leveling jig is provided on a level body provided with legs mountable on the outer surface of a tube, with a crossing rod at the center of the level body and orthogonal to the level body in plan view. Make up one
Then, the positioning jig is connected to the outer pipe surface on the upstream side of the manhole.
Place them on the downstream pipe outer surface, respectively, and
The head is crossed, a the crossover point, the positioning device of the PVC small diameter manhole, characterized in that as match for manhole installation survey point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992081546U JP2599023Y2 (en) | 1992-10-30 | 1992-10-30 | Positioning device for PVC small manhole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992081546U JP2599023Y2 (en) | 1992-10-30 | 1992-10-30 | Positioning device for PVC small manhole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0640045U JPH0640045U (en) | 1994-05-27 |
| JP2599023Y2 true JP2599023Y2 (en) | 1999-08-30 |
Family
ID=13749295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992081546U Expired - Fee Related JP2599023Y2 (en) | 1992-10-30 | 1992-10-30 | Positioning device for PVC small manhole |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2599023Y2 (en) |
-
1992
- 1992-10-30 JP JP1992081546U patent/JP2599023Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0640045U (en) | 1994-05-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |