JP2013104209A - Pit opening/closing structure - Google Patents

Pit opening/closing structure Download PDF

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JP2013104209A
JP2013104209A JP2011247933A JP2011247933A JP2013104209A JP 2013104209 A JP2013104209 A JP 2013104209A JP 2011247933 A JP2011247933 A JP 2011247933A JP 2011247933 A JP2011247933 A JP 2011247933A JP 2013104209 A JP2013104209 A JP 2013104209A
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pit
receiving frame
frame
fitted
closing structure
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JP5767948B2 (en
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Takashi Shimizu
孝 清水
Nobuyuki Hata
信行 畑
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Nippon Chutetsukan KK
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Nippon Chutetsukan KK
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Abstract

PROBLEM TO BE SOLVED: To provide a pit opening/closing structure, in which the inclination angle range of a receiving frame inserted into a pit is enlarged by forming a sufficient clearance between an insertion part of the receiving frame and the pit and the receiving frame can be obliquely installed according to the inclination of a road surface.SOLUTION: A pit opening/closing structure includes in an upper part of a pit 2: a receiving frame 5 and a lid 6 fitted in the upper part of a rise pipe 4; and fixing means 10 for fixing the receiving frame 5 to the rise pipe 4. The receiving frame 5 has an external flange 5e having a diameter larger than that of the rise pipe in the upper part, and an insertion part 5a inserted into the rise pipe 4 in the lower part; a clearance (S) is formed between the insertion part 5a and the rise pipe 4; the fixing means 10 is screwed in the insertion part 5a and consists of a bolt 8 protruding from an outer peripheral surface and a falling-off prevention projection 9; a base plate 3 has a ring-shaped upper frame 3a which is formed on the top face and in which the rise pipe 4 is fitted, and a ring-shaped lower frame 3b which is formed on the underside and in which the pit 2 is fitted; and the base plates 3 are overlapped while a crest part 7a and a trough part 7b are engaged with each other.

Description

この発明は、例えば、地下に埋設されたガス管に取り付けられた開閉バルブの開閉操作を地上から行うことを可能にするために、前記開閉バルブ上に構築されるピットを開閉するためのピット開閉構造、特に、蓋が嵌め込まれる受枠の高さ調整および傾斜設置が容易に行えるピット開閉構造に関するものである。   The present invention provides, for example, a pit opening / closing for opening / closing a pit constructed on the opening / closing valve in order to enable an opening / closing operation of the opening / closing valve attached to a gas pipe buried underground. More particularly, the present invention relates to a pit opening / closing structure in which the height of a receiving frame into which a lid is fitted and the inclination installation can be easily performed.

従来、地下に埋設されたガス管等の開閉バルブの開閉操作を地上から行うことを可能にするために、前記開閉バルブ上に構築されるピット開閉構造と類似するピット開閉構造として、特許文献１（特開２０１０−１０１０５１号公報）に、以下のようなピット開閉構造が開示されている。以下、このピット開閉構造を従来ピット開閉構造といい、図面を参照しながら説明する。   Conventionally, as a pit opening / closing structure similar to a pit opening / closing structure constructed on the opening / closing valve in order to enable an opening / closing operation of an opening / closing valve, such as a gas pipe, buried underground, from the ground, Patent Document 1 (JP 2010-101051 A) discloses the following pit opening and closing structure. Hereinafter, this pit opening / closing structure is referred to as a conventional pit opening / closing structure and will be described with reference to the drawings.

図１６は、従来ピット開閉構造を示す断面図、図１７は、従来ピット開閉構造において受枠の高さを高くした状態を示す断面図である。   16 is a cross-sectional view showing a conventional pit opening / closing structure, and FIG. 17 is a cross-sectional view showing a state in which the height of the receiving frame is increased in the conventional pit opening / closing structure.

図１６および図１７に示すように、従来ピット開閉構造は、地中に埋設された排水管１１の連結部に設置されたピット１２（図１６参照）上に垂直に設置された立ち上がり管１３と、立ち上がり管１３の上部外側に嵌め込まれる連結管１４と、連結管１４の上部内側に嵌め込まれる受枠１５と、受枠１５に嵌め込まれる蓋１６とから構成されている。   As shown in FIGS. 16 and 17, the conventional pit opening and closing structure includes a rising pipe 13 installed vertically on a pit 12 (see FIG. 16) installed at a connection portion of a drain pipe 11 buried in the ground. The connecting pipe 14 is fitted into the upper outer side of the rising pipe 13, the receiving frame 15 is fitted into the upper inner side of the connecting pipe 14, and the lid 16 is fitted into the receiving frame 15.

連結管１４は、上部１４ａと下部１４ｂとからなり、上部１４ａの内径寸法は、立ち上がり管１３の内径寸法と等しく、下部１４ｂの内径寸法は、立ち上がり管１３の外径寸法と等しくなっている。このように、連結管１４の外径寸法を上下２段に異ならせることによって、連結管１４を立ち上がり管１３の上部に嵌め込むことができるので、立ち上がり管１３の長さを連結管１４の上部１４ａの長さ分だけ長くすることができる。   The connecting pipe 14 includes an upper part 14a and a lower part 14b. The inner diameter dimension of the upper part 14a is equal to the inner diameter dimension of the rising pipe 13, and the inner diameter dimension of the lower part 14b is equal to the outer diameter dimension of the rising pipe 13. In this way, the connecting pipe 14 can be fitted into the upper part of the rising pipe 13 by making the outer diameter of the connecting pipe 14 different in two stages, upper and lower, so that the length of the rising pipe 13 is set to the upper part of the connecting pipe 14. The length can be increased by the length of 14a.

立ち上がり管１３の増加長さを連結管１４の上部１４ａの長さ未満とする場合には、上部１４ａを所定長さだけ切断すれば良い。立ち上がり管１３の増加長さを連結管１４の上部１４ａの長さ以上にする場合には、図１７に示すように、連結管１４を複数個（この例では２個）、直列に設置すれば良い。   If the increased length of the riser 13 is less than the length of the upper part 14a of the connecting pipe 14, the upper part 14a may be cut by a predetermined length. When the increased length of the rising pipe 13 is longer than the length of the upper part 14a of the connecting pipe 14, a plurality of connecting pipes 14 (two in this example) are installed in series as shown in FIG. good.

特開２０１０−１０１０５１号公報JP 2010-101051 A

上述した従来ピット開閉構造によれば、立ち上がり管１３の長さは、立ち上がり管１３の上部に嵌め込む連結管１４によって調整することができるので、蓋１６が嵌め込まれる受枠１５の高さ調整は、容易に行える。従って、受枠１５に嵌め込まれる蓋１６のレベルを路面（Ｇ）のレベルと容易に一致させることができる。   According to the above-described conventional pit opening / closing structure, the length of the rising pipe 13 can be adjusted by the connecting pipe 14 fitted into the upper part of the rising pipe 13, so that the height adjustment of the receiving frame 15 into which the lid 16 is fitted is Easy to do. Therefore, the level of the lid 16 fitted into the receiving frame 15 can be easily matched with the level of the road surface (G).

しかしながら、従来ピット開閉構造によれば、受枠１５の高さ調整は、容易に行えるが、路面（Ｇ）が傾斜している場合の対応に問題があった。すなわち、路面（Ｇ）が傾斜している場合、連結管１４の上部を路面（Ｇ）の傾斜に合わせて斜めに切断し、斜めに切断した連結管１４の上部１４ａ内に受枠１５を嵌め込めば良いが、受枠１５と上部１４ａとの間の隙間は、基本的にはないので、連結管１４の上部１４ａ内に受枠１５を斜めに嵌め込むことができず、路面（Ｇ）の傾斜に合わせて受枠１５を斜めに設置することができないといった問題があった。   However, according to the conventional pit opening and closing structure, the height of the receiving frame 15 can be easily adjusted, but there is a problem in dealing with the case where the road surface (G) is inclined. That is, when the road surface (G) is inclined, the upper part of the connecting pipe 14 is cut obliquely in accordance with the inclination of the road surface (G), and the receiving frame 15 is fitted into the upper part 14a of the connecting pipe 14 cut obliquely. However, since there is basically no gap between the receiving frame 15 and the upper portion 14a, the receiving frame 15 cannot be obliquely fitted into the upper portion 14a of the connecting pipe 14, and the road surface (G) is inclined. In addition, there is a problem that the receiving frame 15 cannot be installed obliquely.

従って、この発明の目的は、埋設管に取り付けられたバルブ上に構築されるピットの開閉構造において、蓋が嵌め込まれる受枠の高さ調整および傾斜設置が容易に行えるピット開閉構造を提供することにある。   Accordingly, an object of the present invention is to provide a pit opening / closing structure capable of easily adjusting the height of a receiving frame into which a lid is fitted and inclined installation in a pit opening / closing structure constructed on a valve attached to a buried pipe. is there.

この発明は、上記目的を達成するためになされたものであって、下記を特徴とするものである。   The present invention has been made to achieve the above object, and is characterized by the following.

請求項１に記載の発明は、埋設管に取り付けられたバルブの上部に設置されるピットの開閉構造において、前記ピットの上部にリング状底板を介して接続される立ち上がり管と、前記立ち上がり管の上部内に嵌め込まれる受枠と、前記受枠に嵌め込まれる蓋と、前記受枠を前記立ち上がり管に固定するための固定手段とを備え、前記受枠は、上部に前記立ち上がり管の外径より大きい外側フランジを有し、下部に前記立ち上がり管内への挿入部を有し、前記挿入部と前記立ち上がり管との間には、前記受枠を斜めに前記立ち上がり管内に挿入することを可能にするための隙間が形成され、前記固定手段は、前記挿入部に螺合し、ねじ部先端が前記挿入部の外周面から突出する長さを有するボルトと、前記挿入部の外周面に設けられた抜け止め用突起とからなり、前記底板は、上面に前記立ち上がり管の下部が嵌め込まれるリング状上部枠が形成され、下面に前記ピットの上部が嵌め込まれるリング状下部枠が形成され、前記上部枠および前記下部枠は、周方向に山部と谷部とを交互に形成したものからなり、前記底板同士を重ね合わせる際に、前記山部と前記谷部とが互いに噛み合うことに特徴を有するものである。   According to the first aspect of the present invention, in a pit opening / closing structure installed on an upper part of a valve attached to an embedded pipe, a rising pipe connected to the upper part of the pit via a ring-shaped bottom plate, and the rising pipe A receiving frame fitted into the upper portion, a lid fitted into the receiving frame, and a fixing means for fixing the receiving frame to the riser tube, the receiving frame having an outer flange larger than the outer diameter of the riser tube at the upper portion. A lower portion having an insertion portion into the riser, and a gap is formed between the insertion portion and the riser to allow the receiving frame to be inserted into the riser at an angle. The fixing means is screwed into the insertion portion, and a bolt having a length such that a tip of the screw portion protrudes from the outer peripheral surface of the insertion portion, and a retainer provided on the outer peripheral surface of the insertion portion The bottom plate is formed with a ring-shaped upper frame into which the lower part of the riser pipe is fitted on the upper surface, and a ring-shaped lower frame with the upper part of the pit fitted into the lower surface, and the upper frame and the lower part The frame is formed by alternately forming crests and troughs in the circumferential direction, and is characterized in that the crests and troughs mesh with each other when the bottom plates are overlapped.

請求項２に記載の発明は、請求項１に記載のピット開閉構造において、前記立ち上がり管は、加工が容易な樹脂からなっていることに特徴を有するものである。   The invention according to claim 2 is characterized in that, in the pit opening and closing structure according to claim 1, the riser pipe is made of a resin that can be easily processed.

この発明によれば、以下のような効果がもたらされる。   According to the present invention, the following effects are brought about.

（１）受枠の挿入部と立ち上がり管との間に十分な隙間を形成することによって、立ち上がり管内に挿入する受枠の傾斜角度範囲を大幅に大きくすることができるので、路面の傾斜に合わせて受枠を斜めに容易に設置することができる。   (1) By forming a sufficient gap between the insertion portion of the receiving frame and the rising pipe, the inclination angle range of the receiving frame to be inserted into the rising pipe can be greatly increased, so that the receiving frame is adapted to the inclination of the road surface. Can be easily installed at an angle.

（２）受枠の挿入部に螺合するボルトと、挿入部の外周面に形成した抜け止め用突起とからなる固定手段を設けることによって、受枠のガタツキや立ち上がり管からの受枠の抜け出しを確実に防止することができる。   (2) By providing a fixing means comprising a bolt that is screwed into the insertion portion of the receiving frame and a retaining protrusion formed on the outer peripheral surface of the insertion portion, it is possible to ensure that the receiving frame does not rattle or the receiving frame comes out of the riser tube. Can be prevented.

（３）立ち上がり管を底板を介してピットに接続することによって、立ち上がり管を確実にピットに設置することができ、しかも、受枠にかかる荷重を底板により受けることによって、受枠の沈下を確実に防止することができる。   (3) By connecting the riser pipe to the pit via the bottom plate, the riser pipe can be reliably installed in the pit, and by receiving the load applied to the receiving frame by the bottom plate, the receiving frame is reliably prevented from sinking. can do.

（４）底板の上部枠および下部枠を、これらの周方向に山部と谷部とを交互に形成したもので構成することにより、上部枠内に嵌め込まれる立ち上がり管が倒れ難くすることができると共に、下部枠内に嵌め込まれるピットから底板が外れ難くすることができる。また、底板同士を積み重ねたときに、山部と谷部とが噛み合うので、積み重ね高さを低くすることができる。   (4) By constituting the upper frame and the lower frame of the bottom plate by alternately forming ridges and valleys in the circumferential direction, the riser tube fitted in the upper frame can be made difficult to fall down. At the same time, it is possible to make it difficult for the bottom plate to come off from the pit fitted in the lower frame. In addition, when the bottom plates are stacked, the peak portion and the valley portion mesh with each other, so that the stack height can be lowered.

（５）ピットまたは立ち上がり管を加工が容易な樹脂、例えば、塩化ビニール製とすることによって、ピットまたは立ち上がり管の長さ調整や受枠の傾斜設置の際に行うピットまたは立ち上がり管の切断を容易に行うことができる。   (5) By making the pit or riser easy to process, for example, vinyl chloride, it is easy to cut the pit or riser when adjusting the length of the pit or riser or tilting the receiving frame. It can be carried out.

平坦な地面に構築された、この発明のピット開閉構造を示す断面図である。It is sectional drawing which shows the pit opening / closing structure of this invention constructed | assembled on the flat ground. 傾斜した地面に構築された、この発明のピット開閉構造を示す断面図である。It is sectional drawing which shows the pit opening and closing structure of this invention constructed | assembled on the inclined ground. この発明のピット開閉構造における受枠を示す平面図である。It is a top view which shows the receiving frame in the pit opening / closing structure of this invention. この発明のピット開閉構造における受枠を示す正面図である。It is a front view which shows the receiving frame in the pit opening / closing structure of this invention. この発明のピット開閉構造における受枠を示す底面図である。It is a bottom view which shows the receiving frame in the pit opening / closing structure of this invention. この発明のピット開閉構造における蓋を示す平面図である。It is a top view which shows the cover in the pit opening / closing structure of this invention. この発明のピット開閉構造における蓋を示す正面図である。It is a front view which shows the cover in the pit opening / closing structure of this invention. この発明のピット開閉構造における蓋を示す底面図である。It is a bottom view which shows the cover in the pit opening and closing structure of this invention. この発明のピット開閉構造における底板を示す正面図である。It is a front view which shows the baseplate in the pit opening / closing structure of this invention. この発明のピット開閉構造における底板を示す平面図である。It is a top view which shows the baseplate in the pit opening / closing structure of this invention. この発明のピット開閉構造における受枠を示す右側面図である。It is a right view which shows the receiving frame in the pit opening / closing structure of this invention. この発明のピット開閉構造における受枠を示す左側面図である。It is a left view which shows the receiving frame in the pit opening / closing structure of this invention. 図１０のＡ−Ａ線断面図である。It is the sectional view on the AA line of FIG. 図１０のＢ−Ｂ線断面図である。It is the BB sectional view taken on the line of FIG. この発明のピット開閉構造における底板を重ね合わせた状態を示す正面図である。It is a front view which shows the state which accumulated the baseplate in the pit opening / closing structure of this invention. 従来ピット開閉構造を示す断面図である。It is sectional drawing which shows the conventional pit opening / closing structure. 従来ピット開閉構造において受枠の高さを高くした状態を示す断面図である。It is sectional drawing which shows the state which raised the height of the receiving frame in the conventional pit opening / closing structure.

次に、この発明のピット開閉構造の一実施態様を、図面を参照しながら説明する。   Next, an embodiment of the pit opening / closing structure of the present invention will be described with reference to the drawings.

図１は、平坦な地面に設置された、この発明のピット開閉構造を示す断面図、図２は、傾斜した地面に構築された、この発明のピット開閉構造を示す断面図である。   FIG. 1 is a sectional view showing a pit opening / closing structure of the present invention installed on a flat ground, and FIG. 2 is a sectional view showing a pit opening / closing structure of the present invention constructed on an inclined ground.

図１および図２において、１は、この発明のピット開閉構造である。この発明のピット開閉構造１は、地下に埋設されたピット２に設置され、ピット２を開閉する機能を有している。ピット２は、塩化ビニール等の樹脂からなり、地下に埋設された、例えば、ガス管の開閉バルブ（図示せず）の上部に垂直に構築されている。前記開閉バルブの開閉操作は、ピット開閉構造１の後述する蓋を開き、操作棒（図示せず）をピット２に挿入することにより地上（Ｇ）から行えるようになっている。   1 and 2, reference numeral 1 denotes a pit opening / closing structure of the present invention. A pit opening / closing structure 1 according to the present invention is installed in a pit 2 buried underground and has a function of opening / closing the pit 2. The pit 2 is made of a resin such as vinyl chloride, and is built vertically, for example, above an opening / closing valve (not shown) of a gas pipe embedded in the basement. The opening / closing operation of the opening / closing valve can be performed from the ground (G) by opening a lid, which will be described later, of the pit opening / closing structure 1 and inserting an operation rod (not shown) into the pit 2.

この発明のピット開閉構造１は、ピット２の上部にリング状底板３を介して接続される立ち上がり管４と、立ち上がり管４の上部内に嵌め込まれる受枠５と、受枠５に嵌め込まれる蓋６と、受枠５を立ち上がり管４に固定するための固定手段１０とから構成されている。   A pit opening / closing structure 1 according to the present invention includes a rising pipe 4 connected to an upper part of a pit 2 via a ring-shaped bottom plate 3, a receiving frame 5 fitted into the upper part of the rising pipe 4, and a lid 6 fitted into the receiving frame 5. , And a fixing means 10 for fixing the receiving frame 5 to the rising pipe 4.

図３から図５に示すように、受枠５の上部には、ピット２の外径より大きい外側フランジ５ｅが形成され、受枠５の下部には、ピット２内に挿入される挿入部５ａが形成されている。受枠５に外側フランジ５ｅを形成することによって、受枠５にかかる荷重を外側フランジ５ｅで受けるため、受枠５にかかる荷重による受枠５の沈下を軽減することができる。   As shown in FIGS. 3 to 5, an outer flange 5 e larger than the outer diameter of the pit 2 is formed on the upper portion of the receiving frame 5, and an insertion portion 5 a to be inserted into the pit 2 is formed on the lower portion of the receiving frame 5. Has been. By forming the outer flange 5 e on the receiving frame 5, the load applied to the receiving frame 5 is received by the outer flange 5 e, so that the sinking of the receiving frame 5 due to the load applied to the receiving frame 5 can be reduced.

受枠５の挿入部５ａの上部内周面には、内側フランジ５ｂが形成され、内側フランジ５ｂには、ストッパー用切り欠き５ｃが一対、形成されている。蓋６に形成された後述するストッパーをストッパー用切り欠き５ｃに合致させた後、蓋６を、前記ストッパーがフランジ５ｂの下面に来る位置まで回転させることによって、蓋６の受枠５からの抜け出しを確実に防止することができる。   An inner flange 5b is formed on the upper inner peripheral surface of the insertion portion 5a of the receiving frame 5, and a pair of stopper cutouts 5c is formed on the inner flange 5b. After a stopper, which will be described later, formed on the lid 6 is aligned with the stopper notch 5c, the lid 6 is rotated to a position where the stopper comes to the lower surface of the flange 5b, so that the lid 6 is removed from the receiving frame 5. It can be surely prevented.

受枠５の外側フランジ５ｅの内周面には、位置決め用切り欠き５ｄが形成されている。位置決め用切り欠き５ｄの形成位置は、位置決め用切り欠き５ｄ内に、蓋６の後述する位置決め用突起が嵌り込んだときに、蓋６の前記ストッパーが受枠５の内側フランジ５ｂの下面に来る位置である。従って、位置決め用切り欠き５ｄ内に前記位置決め用突起が嵌り込むまで蓋６を回転させれば、蓋６は、前記ストッパーによって自動的にロックされることになる。かくして、蓋６の受枠５からの抜け出しを確実に防止することができる。   A positioning notch 5 d is formed on the inner peripheral surface of the outer flange 5 e of the receiving frame 5. The positioning notch 5d is formed at a position where the stopper of the lid 6 comes to the lower surface of the inner flange 5b of the receiving frame 5 when a positioning projection described later of the lid 6 is fitted in the positioning notch 5d. It is. Therefore, if the lid 6 is rotated until the positioning projection is fitted into the positioning notch 5d, the lid 6 is automatically locked by the stopper. Thus, it is possible to reliably prevent the lid 6 from coming off from the receiving frame 5.

図１に示すように、受枠５の挿入部５ａとピット２との間には、隙間（Ｓ）が形成されている。この隙間（Ｓ）は、ピット２内に挿入される受枠５の傾斜角度範囲を大幅に大きくすることができるように広く形成されているので、路面（Ｇ）の傾斜に合わせて受枠５を斜めに容易に設置することができる。   As shown in FIG. 1, a gap (S) is formed between the insertion portion 5 a of the receiving frame 5 and the pit 2. Since this gap (S) is formed wide so that the inclination angle range of the receiving frame 5 inserted into the pit 2 can be greatly increased, the receiving frame 5 is inclined according to the inclination of the road surface (G). Can be installed easily.

図１および図２に示すように、固定手段１０は、受枠５の挿入部５ａに螺合し、ねじ部先端が挿入部５ａの外周面から突出する長さを有するボルト８と、挿入部５ａの外周面に設けられた抜け止め用突起９とからなっている。抜け止め用突起９は、ボルト８を挟んでその両側に１２０°間隔で一対、設けられている。   As shown in FIGS. 1 and 2, the fixing means 10 includes a bolt 8 that has a length that is screwed into the insertion portion 5a of the receiving frame 5 and has a thread portion tip projecting from the outer peripheral surface of the insertion portion 5a, and the insertion portion 5a. And a retaining projection 9 provided on the outer peripheral surface of the. A pair of retaining projections 9 are provided on both sides of the bolt 8 at intervals of 120 °.

固定手段１０によれば、受枠５の挿入部５ａをピット２内に挿入した後、ボルト８を締めると、ボルト８のねじ部先端と一対の抜け止め用突起９の計３箇所で挿入部５ａがピット２に固定されるので、受枠５のピット２からの抜け出しを確実に防止することができる。   According to the fixing means 10, when the insertion portion 5 a of the receiving frame 5 is inserted into the pit 2 and then the bolt 8 is tightened, the insertion portion 5 a is formed at a total of three locations: the screw tip of the bolt 8 and the pair of retaining projections 9. Is fixed to the pit 2, it is possible to reliably prevent the receiving frame 5 from coming out of the pit 2.

なお、固定手段１０を挿入部５ａの下部に設ければ、固定手段１０とピット２の上端の開口まで距離が長くなるので、固定手段１０を挿入部５ａの上部に設けた場合に比べて、受枠５がピット２から抜け出にくくなる。   If the fixing means 10 is provided at the lower portion of the insertion portion 5a, the distance between the fixing means 10 and the opening at the upper end of the pit 2 is increased. Therefore, compared to the case where the fixing means 10 is provided at the upper portion of the insertion portion 5a, The receiving frame 5 is difficult to escape from the pit 2.

図６から図８に示すように、蓋６の下面には、一対の鉤状ストッパー６ａが形成されている。一対のストッパー６ａは、下部の鉤部が互いに外側を向くように形成されている。蓋６の上部外周面には、位置決め用突起６ｂが形成されている。ストッパー６ａと位置決め用突起６ｂとの位置関係は、上述したように、ストッパー６ａをストッパー用切り欠き５ｃに合致させた後、蓋６の位置決め用突起６ｂが受枠５の位置決め用切り欠き５ｄに嵌り込む位置まで蓋６を回転させれば、ストッパー６ａの鉤部が受枠５のフランジ５ｂの下方に位置し、蓋６の受枠５からの抜け出しを確実に防止することができる位置関係になっている。   As shown in FIGS. 6 to 8, a pair of hook-shaped stoppers 6 a are formed on the lower surface of the lid 6. The pair of stoppers 6a are formed so that the lower flanges face each other. A positioning projection 6 b is formed on the upper outer peripheral surface of the lid 6. As described above, the positional relationship between the stopper 6a and the positioning projection 6b is such that the positioning projection 6b of the lid 6 fits into the positioning notch 5d of the receiving frame 5 after the stopper 6a is aligned with the stopper notch 5c. If the lid 6 is rotated to the insertion position, the collar portion of the stopper 6a is positioned below the flange 5b of the receiving frame 5 so that the lid 6 can be reliably prevented from coming off from the receiving frame 5. .

図９から図１４に示すように、底板３は、リング状をなし、受枠５の外側フランジ５ｅより大きい外径を有し、受枠５にかかる荷重を受けることによって、受枠５の沈下を確実に防止する機能を有している。底板３の上面には、立ち上がり管４の下部が嵌め込まれるリング状上部枠３ａが形成され、底板３の下面には、ピット２の上部が嵌め込まれるリング状下部枠３ｂが形成されている。上部枠３ａおよび下部枠３ｂは、それぞれ周方向に山部７ａと谷部７ｂとを交互に形成したものからなっている。この例では、山部７ａと谷部７ｂとがそれぞれ３個、形成され、上部枠３ａの山部７ａおよび谷部７ｂは、下部枠３ｂの山部７ａおよび谷部７ｂに対して、周方向に半ピッチだけづれている。これによって、図１５に示すように、底板３同士を重ね合わせる際に、一方の底板３の山部７ａと他方の底板３の谷部７ｂとが互いに噛み合うので、底板３同士を積み重ねたときに、積み重ね高さを低くすることができる。この結果、底板３の運搬時等に嵩張らない。   As shown in FIGS. 9 to 14, the bottom plate 3 has a ring shape, has an outer diameter larger than the outer flange 5 e of the receiving frame 5, and reliably receives the load on the receiving frame 5 to sink the receiving frame 5. It has a function to prevent. A ring-shaped upper frame 3 a into which the lower part of the riser 4 is fitted is formed on the upper surface of the bottom plate 3, and a ring-shaped lower frame 3 b into which the upper part of the pit 2 is fitted is formed on the lower surface of the bottom plate 3. The upper frame 3a and the lower frame 3b are formed by alternately forming peaks 7a and valleys 7b in the circumferential direction. In this example, three peaks 7a and valleys 7b are formed, and the peaks 7a and valleys 7b of the upper frame 3a are circumferential with respect to the peaks 7a and valleys 7b of the lower frame 3b. Only half pitch. Accordingly, as shown in FIG. 15, when the bottom plates 3 are overlapped with each other, the peak portion 7a of one bottom plate 3 and the valley portion 7b of the other bottom plate 3 are engaged with each other. , Stacking height can be lowered. As a result, it is not bulky when the bottom plate 3 is transported.

なお、上部枠３ａの山部７ａおよび谷部７ｂを、下部枠３ｂの山部７ａおよび谷部７ｂに対して、周方向に半ピッチだけずらさず、同一位置に形成しても良い。この場合は、底板３の積み重ね時に、底板３を周方向に半ピッチだけ回せば良い。   In addition, you may form the peak part 7a and trough part 7b of the upper frame 3a in the same position, without shifting only the half pitch in the circumferential direction with respect to the peak part 7a and trough part 7b of the lower frame 3b. In this case, when the bottom plate 3 is stacked, the bottom plate 3 may be rotated by a half pitch in the circumferential direction.

また、上部枠３ａおよび下部枠３ｂに山部７ａを形成することによって、その部分の高さが高くなるので、上部枠３ａ内に嵌め込まれる立ち上がり管４の倒れを防止することができると共に、下部枠３ｂ内に嵌め込まれるピット２から底板３が外れ難くすることができる。なお、上部枠３ａの高さを全て高くすれば、立ち上がり管４の倒れを防止することはできるが、底板３の重量が増加し、しかも、山部７ａと谷部７ｂとが噛み合うように底板３同士を積み重ねることができないので嵩張る。さらに、図１３に示すように、上部枠３ａの山部７ａの内面を角度（θ）で上広がりのテーパー状に形成することによって、立ち上がり管４を嵌め込み易くなると共に、下部枠３ｂの山部７ａの内面を角度（θ）で下広がりのテーパー状に形成することによって、底板３をピット２に嵌め込み易くなる。   Moreover, since the height of the part becomes high by forming the peak part 7a in the upper frame 3a and the lower frame 3b, the riser 4 fitted in the upper frame 3a can be prevented from falling down, and the lower part The bottom plate 3 can be made difficult to come off from the pits 2 fitted in the frame 3b. Note that if the height of the upper frame 3a is all increased, the riser 4 can be prevented from falling, but the weight of the bottom plate 3 is increased, and the bottom plate 7a and the trough portion 7b are engaged with each other. Since 3 cannot be stacked, it is bulky. Furthermore, as shown in FIG. 13, by forming the inner surface of the peak portion 7a of the upper frame 3a into a tapered shape that is upwardly widened at an angle (θ), the rising pipe 4 can be easily fitted and the peak portion of the lower frame 3b. By forming the inner surface of 7a into a taper shape extending downward at an angle (θ), the bottom plate 3 can be easily fitted into the pit 2.

また、図９および図１０に示すように、上部枠３ａの山部７ａの内面高さ方向に、突条７ｃを形成すれば、図１および図２に示すように、立ち上がり管４の下部を上部枠３ａ内に嵌め込んだときに、立ち上がり管４の管壁に突条７ｃが食い込むので、立ち上がり管４を底板３に確実に接続することができる。また、下部枠３ｂの山部７ａの内面高さ方向に、突条７ｃを形成すれば、図１および図２に示すように、ピット２の管壁に突条７ｃが食い込むので、底板３をピット２に確実に固定することができる。   Further, as shown in FIGS. 9 and 10, if the protrusion 7c is formed in the height direction of the inner surface of the crest portion 7a of the upper frame 3a, the lower portion of the riser pipe 4 is lowered as shown in FIGS. Since the protrusion 7c bites into the tube wall of the rising tube 4 when fitted into the upper frame 3a, the rising tube 4 can be securely connected to the bottom plate 3. Moreover, if the protrusion 7c is formed in the height direction of the inner surface of the peak portion 7a of the lower frame 3b, the protrusion 7c bites into the pipe wall of the pit 2 as shown in FIGS. It can be securely fixed to the pit 2.

さらに、上部枠３ａおよび下部枠３ｂの内側コーナー部に凹み（Ｐ）（図１、図２参照）を形成しておけば、立ち上がり管４の下面およびピット２の上面と底板３とが密着するので、底板３を介して立ち上がり管４とピット２とをガタツキなく接続することができる。通常、底板３は、鋳物製であるので、製造上、内側コーナー部はどうしてもＲが付き、立ち上がり管４の下面およびピット２の上面と底板３とが密着し難い。この結果、底板３と立ち上がり管４およびピット２との間にガタツキが生じる虞がある。   Furthermore, if a recess (P) (see FIGS. 1 and 2) is formed in the inner corners of the upper frame 3a and the lower frame 3b, the lower surface of the riser 4 and the upper surface of the pit 2 and the bottom plate 3 are in close contact with each other. Therefore, the rising pipe 4 and the pit 2 can be connected through the bottom plate 3 without rattling. Usually, since the bottom plate 3 is made of a casting, the inner corner portion is inevitably provided with R in manufacturing, and the lower surface of the rising pipe 4 and the upper surface of the pit 2 and the bottom plate 3 are difficult to adhere. As a result, rattling may occur between the bottom plate 3 and the riser 4 and the pit 2.

立ち上がり管４は、後述するように、立ち上がり管４の長さ調整や受枠５の傾斜設置の際に行う立ち上がり管４の切断加工を容易にするために、塩化ビニール等の樹脂からなっている。   As will be described later, the riser 4 is made of a resin such as vinyl chloride in order to facilitate the cutting process of the riser 4 performed when the length of the riser 4 is adjusted or the receiving frame 5 is inclined.

上述のように構成されている、この発明のピット開閉構造１を平坦な路面（Ｇ）に設置するには、図１に示すように、上端面が水平に切断された立ち上がり管４の上部内に受枠５の挿入部５ａを挿入し、ボルト８を締める。これにより、ボルト８のねじ部先端と一対の抜け止め用突起９とが立ち上がり管４の内周面に当接するので、受枠５は、立ち上がり管４に水平に確実に固定される。この後、受枠５内に蓋６を嵌め込む。   In order to install the pit opening / closing structure 1 of the present invention configured as described above on a flat road surface (G), as shown in FIG. 1, the upper end surface of the rising pipe 4 is cut horizontally. Then, the insertion portion 5a of the receiving frame 5 is inserted, and the bolt 8 is tightened. As a result, the tip of the threaded portion of the bolt 8 and the pair of retaining projections 9 come into contact with the inner peripheral surface of the rising tube 4, so that the receiving frame 5 is securely fixed to the rising tube 4 horizontally. Thereafter, the lid 6 is fitted into the receiving frame 5.

この発明のピット開閉構造１を傾斜した路面（Ｇ）に設置するには、図２に示すように、立ち上がり管４の上面を路面（Ｇ）の傾斜に合わせて斜めに切断し、立ち上がり管４の上部内に受枠５の挿入部５ａを挿入する。立ち上がり管４の切断は、立ち上がり管４を塩化ビニール等の樹脂製とすることによって、容易に行える。この後、ボルト８を締めれば、受枠５のねじ部先端と一対の抜け止め用突起９とが立ち上がり管４の内周面に当接するので、受枠５は、路面（Ｇ）の傾斜に合わせて斜めにピット２に確実に固定される。この後、受枠５内に蓋６を嵌め込む。この場合、受枠５の挿入部５ａと立ち上がり管４との間に十分に広い隙間が形成されているので、受枠５の傾斜設置角度を、路面（Ｇ）の傾斜に合わせて自由に調整することができる。   In order to install the pit opening / closing structure 1 of the present invention on an inclined road surface (G), as shown in FIG. 2, the upper surface of the rising pipe 4 is cut obliquely in accordance with the inclination of the road surface (G), and the rising pipe 4 The insertion part 5a of the receiving frame 5 is inserted into the upper part of. The riser 4 can be easily cut by making the riser 4 made of a resin such as vinyl chloride. Thereafter, when the bolt 8 is tightened, the tip of the threaded portion of the receiving frame 5 and the pair of retaining projections 9 come into contact with the inner peripheral surface of the rising pipe 4, so that the receiving frame 5 matches the inclination of the road surface (G). It is securely fixed to the pit 2 at an angle. Thereafter, the lid 6 is fitted into the receiving frame 5. In this case, since a sufficiently wide gap is formed between the insertion portion 5a of the receiving frame 5 and the rising pipe 4, the inclination installation angle of the receiving frame 5 can be freely adjusted according to the inclination of the road surface (G). Can do.

なお、受枠５の高さ調整を行う際には、立ち上がり管４を引き抜いて新たなものと交換するが、立ち上がり管４は、直管であり、しかも、立ち上がり管４と底板３とは、立ち上がり管４の下部を底板３の上部枠３ａ内に嵌め込むことによって接続されているので、立ち上がり管４の引き抜きは、容易に行える。立ち上がり管４の引き抜きが容易に行えることから、立ち上がり管４の交換の際の土の掘削量は、少量で済む。   When the height of the receiving frame 5 is adjusted, the riser 4 is pulled out and replaced with a new one. The riser 4 is a straight pipe, and the riser 4 and the bottom plate 3 are raised. Since the lower part of the pipe 4 is connected by being fitted into the upper frame 3a of the bottom plate 3, the riser pipe 4 can be easily pulled out. Since the riser 4 can be easily pulled out, the amount of excavation of the soil when replacing the riser 4 is small.

上述したように、この発明によれば、受枠５の挿入部５ａと立ち上がり管４との間に十分に広い隙間（Ｓ）を形成することによって、立ち上がり管４に設置される受枠５の傾斜角度範囲を大幅に大きくすることができるので、路面（Ｇ）の傾斜に合わせて受枠５を斜めに容易に設置することができる。   As described above, according to the present invention, by forming a sufficiently wide gap (S) between the insertion portion 5a of the receiving frame 5 and the rising tube 4, the inclination angle of the receiving frame 5 installed in the rising tube 4 is increased. Since the range can be greatly increased, the receiving frame 5 can be easily installed obliquely in accordance with the inclination of the road surface (G).

また、受枠５の挿入部５ａに螺合させたボルト８を締め付けることによって、ボルト８のねじ部先端と一対の抜け止め用突起９とがピット２または立ち上がり管４の内周面に当接するので、受枠５のガタツキや立ち上がり管からの抜け出しを確実に防止することができる。   Further, by tightening the bolt 8 screwed into the insertion portion 5a of the receiving frame 5, the tip of the screw portion of the bolt 8 and the pair of retaining projections 9 come into contact with the inner peripheral surface of the pit 2 or the rising pipe 4. Thus, it is possible to reliably prevent the receiving frame 5 from rattling or coming off from the riser tube.

また、立ち上がり管４を底板３を介してピット２に設置することによって、立ち上がり管４を確実にピット２に設置することができ、しかも、受枠５にかかる荷重を底板３により受けることによって、受枠５の沈下を確実に防止することができる。   Further, by installing the rising pipe 4 in the pit 2 via the bottom plate 3, the rising pipe 4 can be reliably installed in the pit 2, and the load applied to the receiving frame 5 is received by the bottom plate 3. 5 can be reliably prevented from sinking.

また、底板３の上部枠３ａおよび下部枠３ｂを、周方向に山部７ａと谷部７ｂとを交互に形成したもので構成することにより、底板３同士を積み重ねたときに、積み重ね高さを低くすることができると共に、底板３の軽量化および立ち上がり管４の倒れの防止を図ることができる。   Further, the upper frame 3a and the lower frame 3b of the bottom plate 3 are formed by alternately forming the crests 7a and the troughs 7b in the circumferential direction, so that when the bottom plates 3 are stacked, the stacking height is increased. While being able to make it low, weight reduction of the baseplate 3 and prevention of the fall of the riser pipe 4 can be aimed at.

さらに、立ち上がり管４を、加工が容易な、例えば、塩化ビニール製とすることによって、立ち上がり管４の長さ調整や受枠５の傾斜設置の際に行う立ち上がり管の切断加工を容易に行うことができる。   Furthermore, by making the riser pipe 4 easy to process, for example, made of vinyl chloride, it is possible to easily perform the cutting process of the riser pipe when the length of the riser pipe 4 is adjusted or the receiving frame 5 is inclined. it can.

１：この発明のピット開閉構造
２：ピット
３：底板
３ａ：上部枠
３ｂ：下部枠
４：立ち上がり管
５：受枠
５ａ：挿入部
５ｂ：内側フランジ
５ｃ：ストッパー用切り欠き
５ｄ：位置決め用切り欠き
５ｅ：外側フランジ
６：蓋
６ａ：ストッパー
６ｂ：位置決め用突起
７ａ：山部
７ｂ：谷部
８：ボルト
９：抜け止め用突起
１０：固定手段
１１：排水管
１２：ピット
１３：立ち上がり管
１４：連結管
１４ａ：連結管の上部
１４ｂ：連結管の下部
１５：受枠
１６：蓋 1: Pit opening / closing structure of the present invention 2: Pit 3: Bottom plate 3a: Upper frame 3b: Lower frame 4: Rising pipe 5: Receiving frame 5a: Insertion part 5b: Inner flange 5c: Notch for stopper 5d: Notch for positioning 5e : Outer flange 6: Lid 6a: Stopper 6b: Positioning projection 7a: Mountain portion 7b: Valley portion 8: Bolt 9: Retaining projection 10: Fixing means 11: Drain pipe 12: Pit 13: Rising pipe 14: Connecting pipe 14a: upper part of connecting pipe 14b: lower part of connecting pipe 15: receiving frame 16: lid

Claims (2)

埋設管に取り付けられたバルブの上部に設置されるピットの開閉構造において、前記ピットの上部にリング状底板を介して接続される立ち上がり管と、前記立ち上がり管の上部内に嵌め込まれる受枠と、前記受枠に嵌め込まれる蓋と、前記受枠を前記立ち上がり管に固定するための固定手段とを備え、前記受枠は、上部に前記立ち上がり管の外径より大きい外側フランジを有し、下部に前記立ち上がり管内への挿入部を有し、前記挿入部と前記立ち上がり管との間には、前記受枠を斜めに前記立ち上がり管内に挿入することを可能にするための隙間が形成され、前記固定手段は、前記挿入部に螺合し、ねじ部先端が前記挿入部の外周面から突出する長さを有するボルトと、前記挿入部の外周面に設けられた抜け止め用突起とからなり、前記底板は、上面に前記立ち上がり管の下部が嵌め込まれるリング状上部枠が形成され、下面に前記ピットの上部が嵌め込まれるリング状下部枠が形成され、前記上部枠および前記下部枠は、周方向に山部と谷部とを交互に形成したものからなり、前記底板同士を重ね合わせる際に、前記山部と前記谷部とが互いに噛み合うことを特徴とするピット開閉構造。   In the opening and closing structure of the pit installed on the upper part of the valve attached to the buried pipe, a rising pipe connected to the upper part of the pit via a ring-shaped bottom plate, a receiving frame fitted into the upper part of the rising pipe, A lid fitted into the receiving frame; and a fixing means for fixing the receiving frame to the riser pipe, the receiving frame having an outer flange larger than an outer diameter of the riser pipe at an upper part and into the riser pipe at a lower part. A gap is formed between the insertion portion and the riser to allow the receiving frame to be inserted into the riser at an angle, and the fixing means includes the insert A bolt having a length that protrudes from the outer peripheral surface of the insertion portion, and a retaining protrusion provided on the outer peripheral surface of the insertion portion. A ring-shaped upper frame in which the lower part of the riser pipe is fitted on the upper surface, and a ring-shaped lower frame in which the upper part of the pit is fitted is formed on the lower surface. The upper frame and the lower frame are crested in the circumferential direction. A pit opening and closing structure, wherein the ridges and the valleys are engaged with each other when the bottom plates are overlapped with each other. 前記立ち上がり管は、加工が容易な樹脂からなっていることを特徴とする、請求項１に記載のピット開閉構造。   The pit opening and closing structure according to claim 1, wherein the rising pipe is made of a resin that can be easily processed.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200015224A (en) * 2018-08-03 2020-02-12 강두환 Height and Slope Adjustment Type Manhole
KR102189619B1 (en) 2020-07-10 2020-12-11 계원토건 주식회사 Manhole device with adjustable height and angle
KR102193143B1 (en) 2020-05-12 2020-12-18 계원토건 주식회사 Manhole angle and height adjustment

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0426243U (en) * 1990-06-21 1992-03-02
JPH0517991A (en) * 1991-07-11 1993-01-26 Maezawa Kasei Kogyo Kk Lid receiving device
JPH0587087U (en) * 1991-07-05 1993-11-22 巳徳 鍵山 Drainage hall with adjustable height and slope
JPH0827887A (en) * 1994-07-18 1996-01-30 Mitsubishi Plastics Ind Ltd Cleaning opening for sewage basin
JPH0841969A (en) * 1994-08-04 1996-02-13 Sekisui Chem Co Ltd Catch basin

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0426243U (en) * 1990-06-21 1992-03-02
JPH0587087U (en) * 1991-07-05 1993-11-22 巳徳 鍵山 Drainage hall with adjustable height and slope
JPH0517991A (en) * 1991-07-11 1993-01-26 Maezawa Kasei Kogyo Kk Lid receiving device
JPH0827887A (en) * 1994-07-18 1996-01-30 Mitsubishi Plastics Ind Ltd Cleaning opening for sewage basin
JPH0841969A (en) * 1994-08-04 1996-02-13 Sekisui Chem Co Ltd Catch basin

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200015224A (en) * 2018-08-03 2020-02-12 강두환 Height and Slope Adjustment Type Manhole
KR102107671B1 (en) * 2018-08-03 2020-05-07 강두환 Height and Slope Adjustment Type Manhole
KR102193143B1 (en) 2020-05-12 2020-12-18 계원토건 주식회사 Manhole angle and height adjustment
KR102189619B1 (en) 2020-07-10 2020-12-11 계원토건 주식회사 Manhole device with adjustable height and angle

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