JP2008074424A - Water tank covering lid system - Google Patents

Water tank covering lid system Download PDF

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JP2008074424A
JP2008074424A JP2006253861A JP2006253861A JP2008074424A JP 2008074424 A JP2008074424 A JP 2008074424A JP 2006253861 A JP2006253861 A JP 2006253861A JP 2006253861 A JP2006253861 A JP 2006253861A JP 2008074424 A JP2008074424 A JP 2008074424A
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cover
cover member
members
top plate
plate
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Yasuhiro Saito
康宏 斉藤
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Sekisui Chemical Co Ltd
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Sekisui Chemical Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a water tank covering lid system using movable covering lid members capable of reducing a step between the covering lid members and ensuring the sufficient load strength even when the span is relatively long. <P>SOLUTION: Top plates 15A, 15B and 15C for covering an opening 12a and each pair of leg plates 16A, 16B and 16C extending downward from the top plates 15A, 15B and 15C are at least provided on covering lid members 14A, 14B and 14C. Turnable reinforcing plates 20Bb and 20Cb mounted in an extending and turnable manner in the equitant direction over the opening 12a are provided on the top plates 15B and 15C of the covering lid members 14B and 14C, respectively. When the covering lid members 14A and 14B are stored in the covering lid members 14B and 14C, the turnable reinforcing plates 20Bb and 20Cb are folded along the top plates 15B and 15C. When the covering lid members 14A and 14B functioning as stored members are drawn, the turnable reinforcing plates 20Bb and 20Cb are suspended down due to their own weights. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、水処理施設用水槽の上部開口を覆う可動式の覆蓋部材を使用した水槽覆蓋システムに関する。   The present invention relates to a water tank cover system using a movable cover member that covers an upper opening of a water tank for water treatment facilities.

従来から、水処理施設用水槽の上部開口を覆う可動式の覆蓋部材を使用した水槽覆蓋システムが知られている。   Conventionally, a water tank cover system using a movable cover member that covers an upper opening of a water tank for water treatment facilities is known.

水処理施設のうち、例えば、下水処理施設には、沈砂槽、沈殿槽、生物反応槽などの大型水槽が設置されている。これらの水槽の上部開口は、安全上、衛生上、或いは、環境上などの観点から覆蓋部材によって覆われている。   Among water treatment facilities, for example, sewage treatment facilities are equipped with large water tanks such as a sand settling tank, a settling tank, and a biological reaction tank. The upper openings of these water tanks are covered with a cover member from the viewpoints of safety, hygiene, and environment.

図１において、１は水処理施設、２は水槽、３ａ，３ｂ，３ｃはレール部材、４Ａ，４Ｂ，４Ｃは覆蓋部材である。   In FIG. 1, 1 is a water treatment facility, 2 is a water tank, 3a, 3b, and 3c are rail members, and 4A, 4B, and 4C are cover members.

本従来例に係る水槽覆蓋システムは、各一対のレール部材３ａ，３ｂ，３ｃと、複数の覆蓋部材４Ａ，４Ｂ，４Ｃとによって構成されている。   The aquarium cover system according to the conventional example includes a pair of rail members 3a, 3b, 3c and a plurality of cover members 4A, 4B, 4C.

水槽２は上部に開口２ａを有しており、開口２ａは略矩形状を呈している。   The water tank 2 has an opening 2a at the top, and the opening 2a has a substantially rectangular shape.

水槽２を囲う周縁部のうち互いに対向する周縁部２ｂ，２ｂには、開口２ａを挟んで両側に一対のレール部材３ａ，３ａが敷設されており、レール部材３ａ，３ａの両外側にはレール部材３ｂ，３ｂが敷設され、更に、レール部材３ｂ，３ｂの両外側にはレール部材３ｃ，３ｃが敷設されている。   A pair of rail members 3a, 3a are laid on both sides of the peripheral edge portions 2b, 2b of the peripheral edge portion surrounding the water tank 2 across the opening 2a, and rails 3a, 3a have rails on both outer sides. Members 3b and 3b are laid, and rail members 3c and 3c are laid on both outer sides of the rail members 3b and 3b.

開口２ａの上部には、覆蓋部材４Ａ，４Ｂ，４Ｃが複数設けられており、覆蓋部材４Ａ，４Ｂ，４Ｃは周縁部２ｂ，２ｂ間を跨いで開口２ａを覆っている。   A plurality of cover members 4A, 4B, and 4C are provided above the opening 2a, and the cover members 4A, 4B, and 4C cover the opening 2a across the peripheral edge portions 2b and 2b.

そして、覆蓋部材４Ａ，４Ｂ，４Ｃは、各一対のレール部材３ａ，３ｂ，３ｃに沿って、すなわち、開口２ａを跨ぐ方向に存在する一対の周縁部２ｂ，２ｂに沿って移動可能となっている。   The cover members 4A, 4B, and 4C are movable along the pair of rail members 3a, 3b, and 3c, that is, along the pair of peripheral edges 2b and 2b that exist in the direction across the opening 2a. Yes.

覆蓋部材４Ａは覆蓋部材４Ｂの内部に収納可能となっており、覆蓋部材４Ｂは覆蓋部材４Ｃの内部に収納可能となっている。   The cover member 4A can be stored inside the cover member 4B, and the cover member 4B can be stored inside the cover member 4C.

本従来例の水槽覆蓋システムでは、これらの覆蓋部材４Ａ，４Ｂ，４Ｃをそれぞれ相対的に移動させることにより、開口２ａを開閉するようになっている。   In the water tank cover system of the conventional example, the opening 2a is opened and closed by relatively moving these cover members 4A, 4B, and 4C.

覆蓋部材４Ａは、天板５Ａと、脚板６Ａとを有しており、これらは、いずれもＦＦＵ（Ｆｉｂｅｒ ｒｅｉｎｆｏｒｃｅｄ Ｆｏａｍｅｄ Ｕｒｅｔｈａｎｅ：繊維強化発泡ウレタン）によって形成されている。   The cover member 4A has a top plate 5A and a leg plate 6A, both of which are formed of FFU (Fiber Reinforced Foamed Urethane).

天板５Ａと、脚板６Ａ，６Ａとは平面視形状が略長方形状を呈している。   The top plate 5A and the leg plates 6A, 6A have a substantially rectangular shape in plan view.

一対の脚板６Ａ，６Ａは、天板５Ａの長手方向両端部に接合されており、それぞれ天板５Ａの下面側に向かって立設されている。   The pair of leg plates 6A and 6A are joined to both ends in the longitudinal direction of the top plate 5A, and are erected toward the lower surface side of the top plate 5A.

各脚板６Ａの下端部には、この下端部の長手方向両端付近に、一対の車輪（図示省略）がそれぞれ取り付けられている。   A pair of wheels (not shown) is attached to the lower end of each leg plate 6A in the vicinity of both ends in the longitudinal direction of the lower end.

覆蓋部材４Ｂ，４Ｃの構成は覆蓋部材４Ａの構成と略同一であるので説明を省略するが、以下の説明では、対応する部分には対応した符号を用いて説明する。例えば、覆蓋部材４Ｂの天板５Ｂに対応させて、覆蓋部材４Ｃの天板の符号を５Ｃなどとする。   Since the configuration of the cover members 4B and 4C is substantially the same as the configuration of the cover member 4A, description thereof will be omitted, but in the following description, corresponding portions will be described using corresponding reference numerals. For example, the symbol of the top plate of the cover member 4C is 5C, etc., corresponding to the top plate 5B of the cover member 4B.

覆蓋部材４Ａはレール部材３ａ，３ａ上に載置され、覆蓋部材４Ｂはレール部材３ｂ，３ｂ上に載置され、覆蓋部材４Ｃはレール部材３ｃ，３ｃ上に載置されている。   The cover member 4A is placed on the rail members 3a and 3a, the cover member 4B is placed on the rail members 3b and 3b, and the cover member 4C is placed on the rail members 3c and 3c.

覆蓋部材４Ａ，４Ｂ，４Ｃは、それぞれ高さと開口２ａを跨ぐ方向の長さとが異なっており、覆蓋部材４Ａ，４Ｂ，４Ｃをレール部材３ａ，３ｂ，３ｃ上で移動させる際に高さ方向や長さ方向には互いに干渉しないようになっている。   The cover members 4A, 4B, and 4C have different heights and lengths in the direction across the opening 2a. When the cover members 4A, 4B, and 4C are moved on the rail members 3a, 3b, and 3c, They do not interfere with each other in the length direction.

本従来例に係る覆蓋部材４Ａ，４Ｂ，４Ｃは、幅（移動方向の長さ）が約１ｍ、スパン（架け渡し方向の長さ）が約２ｍ程度になっており、天板５Ａ，５Ｂ，５Ｃの厚さは１ｃｍ程度になっている。   The cover members 4A, 4B, and 4C according to the conventional example have a width (length in the moving direction) of about 1 m and a span (length in the spanning direction) of about 2 m, and the top plates 5A, 5B, The thickness of 5C is about 1 cm.

例えば水槽の保守点検の際には、覆蓋部材４Ａと覆蓋部材４Ｂとを覆蓋部材４Ｃの内部に収納することにより水槽の上部を開放して水槽の点検を行う。   For example, at the time of maintenance and inspection of the water tank, the cover member 4A and the cover member 4B are housed inside the cover member 4C to open the upper part of the water tank and check the water tank.

この他に水槽覆蓋システムに関連するものとしては、大型の覆蓋部材でも比較的小さい力で移動させることが可能な貯水槽用の覆蓋部材が知られている（特許文献１参照）。
特開２００５−８２４５号公報 In addition to this, as a water tank cover system, a water tank cover member that can be moved with a relatively small force even with a large cover member is known (see Patent Document 1).
Japanese Patent Laying-Open No. 2005-8245

ところで、覆蓋部材の強度は、保守点検などの際に作業者が覆蓋部材の上に載ることを前提として決められている。   By the way, the strength of the cover member is determined on the premise that an operator is placed on the cover member during maintenance and inspection.

近年、浄水場や下水処理場などの水処理施設において、設備の大型化に伴い大型の水槽が設置されるようになり、６ｍ以上のスパンの覆蓋部材が必要となっている。   In recent years, in water treatment facilities such as water purification plants and sewage treatment plants, large-sized water tanks have been installed with the increase in equipment size, and a cover member having a span of 6 m or more is required.

従来例の水槽用覆蓋システムでは、覆蓋部材４Ａ，４Ｂ，４Ｃのスパンが２ｍ以下の場合には、厚さ約１ｃｍの天板５Ａ，５Ｂ，５Ｃであっても強度は十分であり、図２（ａ）に示すように、天板５Ａ，５Ｂ，５Ｃは撓まない。   In the conventional aquarium cover system, when the cover members 4A, 4B, 4C have a span of 2 m or less, the top plate 5A, 5B, 5C having a thickness of about 1 cm has sufficient strength. As shown to (a), top plate 5A, 5B, 5C does not bend.

しかしながら、幅が約１ｍに対してスパンを２ｍより長く、例えば、６ｍ程度にすると、厚さ約１ｃｍの天板５Ａ，５Ｂ，５Ｃでは強度が不十分となり、図２（ｂ）に示すように、天板５Ａ，５Ｂ，５Ｃの中央部に自重による撓みが生じてしまうという問題があった。   However, if the span is longer than 2 m with respect to the width of about 1 m, for example, about 6 m, the top plates 5A, 5B, and 5C having a thickness of about 1 cm have insufficient strength, as shown in FIG. There has been a problem that bending due to its own weight occurs at the center of the top plates 5A, 5B, 5C.

しかも、保守点検などの際に覆蓋部材４Ａ，４Ｂ，４Ｃの上に作業者が載るには強度が不十分であった。   In addition, the strength is insufficient for an operator to be placed on the cover members 4A, 4B, and 4C during maintenance and inspection.

そこで、図２（ｃ）に示すように、覆蓋部材４Ａ，４Ｂ，４Ｃに補強のために長手方向に沿って梁板７Ａ，７Ｂ，７Ｃを設けると、天板５Ａと梁板７Ｂとの干渉や、天板５Ｂと梁板７Ｃとの干渉を避けるために、天板５Ａに対して天板５Ｂの高さを梁板７Ｂ分だけ高くし、天板５Ｂに対して天板５Ｃの高さを梁板７Ｃ分だけ高くする必要が生じる。   Therefore, as shown in FIG. 2C, if the cover members 4A, 4B, 4C are provided with beam plates 7A, 7B, 7C along the longitudinal direction for reinforcement, the interference between the top plate 5A and the beam plate 7B. In order to avoid interference between the top plate 5B and the beam plate 7C, the height of the top plate 5B is increased by the beam plate 7B with respect to the top plate 5A, and the height of the top plate 5C with respect to the top plate 5B. Need to be raised by the beam plate 7C.

しかも、スパンが長くなればなるほど、強度を確保するために梁板７Ａ，７Ｂ，７Ｃの高さを高くする必要があり、梁板７Ａ，７Ｂ，７Ｃの高さを高くすると、一層、天板５Ａ，５Ｂ，５Ｃ間の段差が大きくなってしまう。   In addition, the longer the span, the higher the height of the beam plates 7A, 7B, 7C in order to ensure the strength. If the height of the beam plates 7A, 7B, 7C is increased, the top plate is further increased. The step between 5A, 5B, and 5C becomes large.

このように、補強のために梁板７Ａ，７Ｂ，７Ｃを設けると、天板５Ａ，５Ｂ，５Ｃ間の段差が大きくなって、保守点検などの際に、作業者が覆蓋部材４Ａ，４Ｂ，４Ｃ上に載って作業をする場合に、足下が悪くなってしまうという問題があった。   As described above, when the beam plates 7A, 7B, and 7C are provided for reinforcement, the steps between the top plates 5A, 5B, and 5C become large, and the operator can cover the cover members 4A, 4B, When working on 4C, there was a problem that the feet became worse.

そこで本発明では、比較的長いスパンであっても、覆蓋部材間の段差を小さくすることができ、十分な荷重強度を確保できる可動式の覆蓋部材を使用した水槽覆蓋システムを提供することを課題としている。   Therefore, the present invention has an object to provide a water tank cover system using a movable cover member that can reduce a step between cover members even with a relatively long span and can secure sufficient load strength. It is said.

上記目的を達成するために請求項１に記載された発明は、水処理施設用水槽の略矩形状の上部開口を跨いで覆う少なくとも２つ以上の覆蓋部材が前記開口を跨ぐ方向に存在する一対の周縁部に沿って移動可能に設けられ、
前記覆蓋部材の一方は前記覆蓋部材の他方を収納する収納部材として機能し、前記覆蓋部材の他方は前記覆蓋部材の一方に収納される被収納部材として機能し、
前記被収納部材として機能する覆蓋部材と前記収納部材として機能する覆蓋部材とを相対移動させることにより前記開口を開閉する水槽覆蓋システムであって、
前記覆蓋部材には、前記開口を覆う天板と、該天板から下方に延びる一対の脚板とが少なくとも設けられ、
前記収納部材として機能する覆蓋部材の天板には、前記開口を跨ぐ方向に伸び且つ回動可能に取り付けられた回動補強板が設けられ、
前記収納部材として機能する覆蓋部材に前記被収納部材として機能する覆蓋部材が収納される際に前記回動補強板が天板に沿って折り畳まれ、かつ、前記被収納部材として機能する覆蓋部材が引き出される際に前記回動補強板が自重に基づき垂下されることを特徴とする水槽覆蓋システムを特徴としている。 In order to achieve the above object, the invention described in claim 1 is a pair in which at least two cover members that cover the substantially rectangular upper opening of the water tank for water treatment facilities exist in a direction across the opening. Provided to be movable along the peripheral edge of the
One of the cover members functions as a storage member that stores the other of the cover members, and the other of the cover members functions as a member to be stored that is stored in one of the cover members,
A water tank cover system that opens and closes the opening by relatively moving a cover member that functions as the member to be stored and a cover member that functions as the storage member,
The cover member is provided with at least a top plate covering the opening and a pair of leg plates extending downward from the top plate,
The top plate of the cover member that functions as the storage member is provided with a rotation reinforcing plate that extends in a direction straddling the opening and is rotatably attached.
When the cover member that functions as the member to be stored is stored in the cover member that functions as the storage member, the rotation reinforcing plate is folded along the top plate, and the cover member that functions as the member to be stored is The water tank cover system is characterized in that the rotating reinforcing plate is suspended based on its own weight when pulled out.

そして、請求項２に記載された発明は、前記回動補強板が垂下した状態で前記一対の脚板に固定可能とされている請求項１に記載された水槽覆蓋システムを特徴としている。   The invention described in claim 2 is characterized in that the aquarium cover system described in claim 1 is capable of being fixed to the pair of leg plates in a state where the rotation reinforcing plate is suspended.

このように構成された本発明の請求項１に記載されたものは、収納部材から被収納部材が引き出された際には、収納部材の回動補強板が自重によって垂下した状態になるので、この垂下した回動補強板により、収納部材の天板が上からの荷重に対して補強され、開口を跨ぐ方向の長さが比較的長い覆蓋部材であっても、自重により天板が撓むことはなく、天板に保守点検を行う作業者が載っても撓まない十分な強度が得られる。   According to the first aspect of the present invention configured as described above, when the member to be stored is pulled out from the storage member, the rotation reinforcing plate of the storage member is suspended by its own weight. By this hanging rotation reinforcing plate, the top plate of the storage member is reinforced against the load from above, and the top plate bends by its own weight even if it is a cover member having a relatively long length across the opening. In other words, sufficient strength can be obtained without bending even if an operator who performs maintenance inspection is placed on the top board.

また、収納部材に被収納部材が収納された際には、収納部材の回動補強板が回動して天板に沿って折り畳まれ、被収納部材の天板と収納部材の回動補強板との高さ方向の干渉が回避されるので、被収納部材の天板と収納部材の天板との段差を垂下時の回動補強板の高さ分だけ小さくすることができる。   Further, when the member to be stored is stored in the storage member, the rotation reinforcing plate of the storage member rotates and is folded along the top plate, and the top plate of the storage member and the rotation reinforcing plate of the storage member Therefore, the level difference between the top plate of the member to be stored and the top plate of the storage member can be reduced by the height of the rotation reinforcing plate at the time of hanging.

そして、被収納部材の天板と収納部材の天板との段差を小さくすると、保守点検を行う作業者が覆蓋部材上を歩くのに足下がよい。   And if the level | step difference of the top plate of a to-be-stored member and the top plate of a storage member is made small, the operator who performs a maintenance check is good at walking on the cover member.

更に、請求項２に記載されたものは、回動補強板が一対の脚板に固定可能とされているので、回動補強板を一対の脚板に固定することによって、回動補強板が不必要に動いてしまうのを防ぐことができる。   Furthermore, since the rotation reinforcing plate can be fixed to the pair of leg plates, the rotation reinforcing plate is unnecessary by fixing the rotation reinforcing plate to the pair of leg plates. Can be prevented.

また、回動補強板を一対の脚板に固定することによって、天板が回動補強板を介して一対の脚板に固定されるので、上からの荷重に対する天板の強度を一層強くすることができる。   Further, by fixing the rotation reinforcing plate to the pair of leg plates, the top plate is fixed to the pair of leg plates via the rotation reinforcing plate, so that the strength of the top plate against the load from above can be further increased. it can.

以下、本発明に係る実施の形態を実施例に基づいて説明する。   Hereinafter, embodiments according to the present invention will be described based on examples.

〈構成〉
図３において、１１は水処理施設、１２は水槽、１３ａ，１３ｂ，１３ｃはレール部材、１４Ａ，１４Ｂ，１４Ｃは覆蓋部材である。 <Constitution>
In FIG. 3, 11 is a water treatment facility, 12 is a water tank, 13a, 13b and 13c are rail members, and 14A, 14B and 14C are cover members.

本実施例に係る水槽覆蓋システムは、各一対のレール部材１３ａ，１３ｂ，１３ｃと、複数の覆蓋部材１４Ａ，１４Ｂ，１４Ｃとによって構成されている。   The water tank cover system according to the present embodiment includes a pair of rail members 13a, 13b, and 13c and a plurality of cover members 14A, 14B, and 14C.

水槽１２は上部に開口１２ａを有しており、開口１２ａは略矩形状を呈している。   The water tank 12 has an opening 12a at the top, and the opening 12a has a substantially rectangular shape.

水槽１２を囲う周縁部のうち互いに対向する周縁部１２ｂ，１２ｂには、開口１２ａを挟んで両側に一対のレール部材１３ａ，１３ａが敷設されており、レール部材１３ａ，１３ａの両外側にはレール部材１３ｂ，１３ｂが敷設され、更に、レール部材１３ｂ，１３ｂの両外側にはレール部材１３ｃ，１３ｃが敷設されている。   A pair of rail members 13a, 13a are laid on both sides of the peripheral edge portions 12b, 12b of the peripheral edge portion surrounding the water tank 12 across the opening 12a. Rails 13a, 13a have rails on both outer sides. Members 13b and 13b are laid, and rail members 13c and 13c are laid on both outer sides of the rail members 13b and 13b.

開口１２ａの上部には、覆蓋部材１４Ａ，１４Ｂ，１４Ｃが複数設けられており、覆蓋部材１４Ａ，１４Ｂ，１４Ｃは周縁部１２ｂ，１２ｂ間を跨いで開口１２ａを覆っている。   A plurality of cover members 14A, 14B, and 14C are provided above the opening 12a, and the cover members 14A, 14B, and 14C cover the opening 12a across the peripheral edge portions 12b and 12b.

そして、覆蓋部材１４Ａ，１４Ｂ，１４Ｃは、各一対のレール部材１３ａ，１３ｂ，１３ｃに沿って、すなわち、開口１２ａを跨ぐ方向に存在する一対の周縁部１２ｂ，１２ｂに沿って移動可能となっている。   The cover members 14A, 14B, and 14C are movable along the pair of rail members 13a, 13b, and 13c, that is, along the pair of peripheral portions 12b and 12b that exist in the direction straddling the opening 12a. Yes.

覆蓋部材１４Ｃは覆蓋部材１４Ｂを収納する収納部材として機能するようになっており、覆蓋部材１４Ｂは覆蓋部材１４Ｃに収納される被収納部材として機能する一方で覆蓋部材１４Ａを収納する収納部材として機能するようになっており、覆蓋部材１４Ａは覆蓋部材１４Ｂに収納される被収納部材として機能するようになっている。   The cover member 14C functions as a storage member that stores the cover member 14B. The cover member 14B functions as a storage member that is stored in the cover member 14C, while it functions as a storage member that stores the cover member 14A. The cover member 14A functions as a member to be stored in the cover member 14B.

本実施例の水槽覆蓋システムでは、これらの覆蓋部材１４Ａ，１４Ｂ，１４Ｃをそれぞれ相対的に移動させることにより、開口１２ａを開閉するようになっている。   In the water tank cover system of the present embodiment, the opening 12a is opened and closed by relatively moving these cover members 14A, 14B, and 14C.

図４に示すように、被覆蓋部材として機能する覆蓋部材１４Ａは、天板１５Ａと、脚板１６Ａと、梁板１７Ａと、補強部材１８Ａとを有しており、これらは、いずれもＦＦＵによって形成されている。   As shown in FIG. 4, the cover member 14A functioning as a cover member has a top plate 15A, a leg plate 16A, a beam plate 17A, and a reinforcing member 18A, all of which are formed by FFU. Has been.

ＦＦＵ（Ｆｉｂｅｒ ｒｅｉｎｆｏｒｃｅｄ Ｆｏａｍｅｄ Ｕｒｅｔｈａｎｅ）とは繊維強化発泡ウレタンのことであり、本実施例のＦＦＵ製板材は、繊維にガラス長繊維を用いている。   FFU (Fiber reinforced foamed urethane) is a fiber-reinforced foamed urethane, and the FFU plate material of this embodiment uses long glass fibers for the fibers.

ＦＦＵは、束ねたガラス長繊維をほぐしながらウレタン樹脂を含浸させて発泡させた樹脂素材であり、木材と同程度の比重に成形可能であり、剛性が高く、薬品などに対する耐浸食性に優れている。   FFU is a resin material that is foamed by impregnating urethane resin while loosening bundled long glass fibers. It can be molded to the same specific gravity as wood, has high rigidity, and has excellent erosion resistance against chemicals. Yes.

ＦＦＵは、エポキシ系接着剤との親和性がよく、更に、スクリュウ釘や木ネジなどによる接合が可能であり、穴開け加工や切断がドリルやノコギリなどによって容易に行うことができる。   FFU has good affinity with an epoxy adhesive, and can be joined with a screw nail or a wood screw. Drilling and cutting can be easily performed with a drill or a saw.

図４に示すように、覆蓋部材１４Ａは、下側から見た際に、全体として架け渡し方向に伸びる略筐体形状を呈している。   As shown in FIG. 4, the cover member 14 </ b> A has a substantially housing shape that extends in the bridging direction as a whole when viewed from below.

天板１５Ａと、脚板１６Ａ，１６Ａと、梁板１７Ａ，１７Ａとは平面視形状が略長方形状を呈している。   The top plate 15A, the leg plates 16A and 16A, and the beam plates 17A and 17A have a substantially rectangular shape in plan view.

一対の脚板１６Ａ，１６Ａは、天板１５Ａの長手方向両端部に接合されており、それぞれ天板１５Ａの下面側に向かって立設されている。   The pair of leg plates 16A and 16A are joined to both ends in the longitudinal direction of the top plate 15A, and are erected toward the lower surface side of the top plate 15A.

一対の梁板１７Ａ，１７Ａは、天板１５Ａの幅手方向両端部に接合されており、それぞれ天板１５Ａの下面側に向かって立設されており、脚板１６Ａの端部と梁板１７Ａの端部とは覆蓋部材１４Ａの角部においてそれぞれ接合されている。   The pair of beam plates 17A and 17A are joined to both ends in the width direction of the top plate 15A, and are respectively erected toward the lower surface side of the top plate 15A. The end portions of the leg plates 16A and the beam plate 17A The ends are joined at the corners of the cover member 14A.

天板１５Ａの裏面側には、複数の補強部材１８Ａが、天板１５Ａの長手方向に沿ってハシゴ状に等間隔に並べて接合されており、各補強部材１８Ａの両端部はそれぞれ対向する梁板１７Ａ，１７Ａの各内側面に接合されている。   A plurality of reinforcing members 18A are joined at equal intervals along the longitudinal direction of the top plate 15A on the back side of the top plate 15A, and both ends of each reinforcing member 18A are opposed beam plates, respectively. It is joined to each inner surface of 17A and 17A.

各脚板１６Ａの下端部には、この下端部の長手方向両端付近に、一対の車輪１９Ａ，１９Ａがそれぞれ取り付けられている。   A pair of wheels 19A and 19A are attached to the lower end of each leg plate 16A in the vicinity of both ends in the longitudinal direction of the lower end.

車輪１９Ａは周方向に溝が設けられたプーリー様の形状を呈しており、レール部材１３ａの上に車輪１９Ａが載った際に、車輪１９Ａがレール部材１３ａの上端部から脱落しないようになっている。   The wheel 19A has a pulley-like shape with grooves in the circumferential direction. When the wheel 19A is placed on the rail member 13a, the wheel 19A does not fall off from the upper end of the rail member 13a. Yes.

図５に示すように、収納部材として機能する覆蓋部材１４Ｂは、天板１５Ｂと、脚板１６Ｂと、梁板１７Ｂと、補強部材１８Ｂと、支持板２０Ｂａと、回動補強板２０Ｂｂとを有している。これらは、いずれもＦＦＵによって形成されている。   As shown in FIG. 5, the cover member 14B functioning as a storage member includes a top plate 15B, a leg plate 16B, a beam plate 17B, a reinforcing member 18B, a support plate 20Ba, and a rotating reinforcing plate 20Bb. ing. These are all formed by FFU.

天板１５Ｂと、脚板１６Ｂ，１６Ｂと、梁板１７Ｂと、回動補強板２０Ｂｂとは平面視形状が略長方形状を呈している。   The top plate 15B, the leg plates 16B and 16B, the beam plate 17B, and the rotation reinforcing plate 20Bb have a substantially rectangular shape in plan view.

一対の脚板１６Ｂ，１６Ｂは、天板１５Ｂの長手方向両端部に接合されており、それぞれ天板１５Ｂの下面側に向かって立設されている。   The pair of leg plates 16B and 16B are joined to both ends in the longitudinal direction of the top plate 15B, and are erected toward the lower surface side of the top plate 15B.

梁板１７Ｂと支持板２０Ｂａとは、天板１５Ｂの幅手方向両端部に接合されており、それぞれ天板１５Ｂの下面側に向かって立設されており、脚板１６Ｂの端部と梁板１７Ｂの端部と支持板２０Ｂａの端部とは覆蓋部材１４Ｂの角部においてそれぞれ接合されている。   The beam plate 17B and the support plate 20Ba are joined to both ends in the width direction of the top plate 15B, respectively, and are erected toward the lower surface side of the top plate 15B, and the end portion of the leg plate 16B and the beam plate 17B. And the end of the support plate 20Ba are joined at the corner of the cover member 14B.

天板１５Ｂの裏面側には、複数の補強部材１８Ｂが、天板１５Ｂの長手方向に沿ってハシゴ状に等間隔に並べて接合されており、各補強部材１８Ｂの両端部はそれぞれ対向する梁板１７Ｂと支持板２０Ｂａとの各内側面に接合されている。   On the back side of the top plate 15B, a plurality of reinforcing members 18B are joined at equal intervals in a ladder shape along the longitudinal direction of the top plate 15B, and both ends of each reinforcing member 18B are opposed beam plates, respectively. It is joined to each inner surface of 17B and support plate 20Ba.

梁板１７Ｂの内側面には、梁板１７Ｂの長手方向に沿って緩衝用のクッション部材２３Ｂが貼設されている。   A cushion member 23B for buffering is attached to the inner side surface of the beam plate 17B along the longitudinal direction of the beam plate 17B.

各脚板１６Ｂの下端部には、この下端部の長手方向両端付近に、一対の車輪１９Ｂ，１９Ｂがそれぞれ取り付けられている。   A pair of wheels 19B and 19B are attached to the lower end of each leg plate 16B near the ends in the longitudinal direction of the lower end.

車輪１９Ｂは周方向に溝が設けられたプーリー様の形状を呈しており、レール部材１３ｂの上に車輪１９Ｂが載った際に、車輪１９Ｂがレール部材１３ｂの上端部から脱落しないようになっている。   The wheel 19B has a pulley-like shape with grooves in the circumferential direction, and when the wheel 19B is placed on the rail member 13b, the wheel 19B does not fall off from the upper end of the rail member 13b. Yes.

支持板２０Ｂａの長手方向に沿って長手方向一端から他端に渡って等間隔に複数のヒンジ２１Ｂが取り付けられている。   A plurality of hinges 21B are attached at equal intervals from one end of the longitudinal direction to the other end along the longitudinal direction of the support plate 20Ba.

回動補強板２０Ｂｂは天板１５Ｂの長手方向（開口１２ａを跨ぐ方向）に伸びており、支持板２０Ｂａに複数のヒンジ２１Ｂを介して回動可能に取り付けられている。   The rotation reinforcing plate 20Bb extends in the longitudinal direction of the top plate 15B (the direction across the opening 12a), and is rotatably attached to the support plate 20Ba via a plurality of hinges 21B.

回動補強板２０Ｂｂの両端部には、かんぬき受入金具２２Ｂａ，２２Ｂａがそれぞれ斜めに取付けられている。   The bolt receiving brackets 22Ba and 22Ba are respectively attached obliquely to both ends of the rotation reinforcing plate 20Bb.

各脚板１６Ｂ，１６Ｂのかんぬき受入金具２２Ｂａ，２２Ｂａに対応する位置には、それぞれ、かんぬき用穴２２Ｂｂ，２２Ｂｂが、かんぬき受入金具２２Ｂａ，２２Ｂａの傾斜に対応して斜め向きに形成されている。   In the positions corresponding to the latch receiving brackets 22Ba and 22Ba of the leg plates 16B and 16B, the punching holes 22Bb and 22Bb are formed obliquely corresponding to the inclinations of the latch receiving brackets 22Ba and 22Ba, respectively.

回動補強板２０Ｂｂを脚板１６Ｂに固定する際には、かんぬき部材２２Ｂｃの握持部２２Ｂｄを持って、棒状部２２Ｂｅをかんぬき用穴２２Ｂｂとかんぬき受入金具２２Ｂａの嵌合部２２Ｂｆとに貫通させて嵌合固定するようになっている。   When the rotation reinforcing plate 20Bb is fixed to the leg plate 16B, the gripping portion 22Bd of the punching member 22Bc is held, and the rod-like portion 22Be is passed through the punching hole 22Bb and the fitting portion 22Bf of the punching receiving bracket 22Ba. It is designed to be fitted and fixed.

このように、回動補強板２０Ｂｂは天板１５Ｂから下方に向かって垂下した状態で脚板１６Ｂに固定可能となっている。   Thus, the rotation reinforcing plate 20Bb can be fixed to the leg plate 16B in a state of hanging downward from the top plate 15B.

覆蓋部材１４Ｃの構成は覆蓋部材１４Ｂの構成と略同一であるので説明を省略するが、以下の説明では、対応する部分には対応した符号を用いて説明する。例えば、覆蓋部材１４Ｂの天板１５Ｂに対応させて、覆蓋部材１４Ｃの天板の符号を１５Ｃなどとする。   Since the configuration of the cover member 14C is substantially the same as the configuration of the cover member 14B, the description thereof will be omitted, but in the following description, corresponding portions will be described using corresponding reference numerals. For example, the reference numeral of the top plate of the cover member 14C is 15C corresponding to the top plate 15B of the cover member 14B.

図３または図６に示すように、覆蓋部材１４Ａは覆蓋部材１４Ｂに収納可能となっており、覆蓋部材１４Ｂは覆蓋部材１４Ｃに収納可能となっている。   As shown in FIG. 3 or FIG. 6, the cover member 14A can be stored in the cover member 14B, and the cover member 14B can be stored in the cover member 14C.

覆蓋部材１４Ａはレール部材１３ａ，１３ａ上に載置され、覆蓋部材１４Ｂはレール部材１３ｂ，１３ｂ上に載置され、覆蓋部材１４Ｃはレール部材１３ｃ，１３ｃ上に載置されている。   The cover member 14A is placed on the rail members 13a and 13a, the cover member 14B is placed on the rail members 13b and 13b, and the cover member 14C is placed on the rail members 13c and 13c.

覆蓋部材１４Ａ，１４Ｂ，１４Ｃは、高さと開口１２ａを跨ぐ方向の長さとがそれぞれ異なっており、覆蓋部材１４Ａ，１４Ｂ，１４Ｃをレール部材１３ａ，１３ｂ，１３ｃ上で移動させる際に高さ方向や長さ方向には互いに干渉しないようになっている。   The cover members 14A, 14B, and 14C have different heights and lengths in the direction across the opening 12a. When the cover members 14A, 14B, and 14C are moved on the rail members 13a, 13b, and 13c, They do not interfere with each other in the length direction.

本実施例に係る覆蓋部材１４Ａ，１４Ｂ，１４Ｃは、幅（移動方向の長さ）が約１ｍ、スパン（架け渡し方向の長さ）が約６ｍ程度になっており、天板１５Ａ，１５Ｂ，１５Ｃの厚さは１ｃｍ程度になっている。   The cover members 14A, 14B, and 14C according to the present embodiment have a width (length in the moving direction) of about 1 m and a span (length in the spanning direction) of about 6 m, and the top plates 15A, 15B, The thickness of 15C is about 1 cm.

〈使用方法〉
通常は、水槽１２の開口１２ａが複数の覆蓋部材１４Ａ，１４Ｂ，１４Ｃによって覆われた状態になっているが、水槽１２の保守点検などの際には、いくつかの覆蓋部材１４Ａ，１４Ｂ，１４Ｃを移動させて、開口１２ａを開放して保守点検作業を行なう。 <how to use>
Normally, the opening 12a of the water tank 12 is covered with a plurality of cover members 14A, 14B, and 14C. However, when the water tank 12 is inspected, several cover members 14A, 14B, and 14C are used. Is moved to open the opening 12a to perform maintenance and inspection work.

複数の覆蓋部材１４Ａ，１４Ｂ，１４Ｃのうち、例えば、隣接している３つの覆蓋部材１４Ａ，１４Ｂ，１４Ｃについて、覆蓋部材１４Ａと覆蓋部材１４Ｂとを覆蓋部材１４Ｃの内部に収納する場合を説明する。   The case where the cover member 14A and the cover member 14B are housed inside the cover member 14C, for example, of the three cover members 14A, 14B, and 14C adjacent to each other among the plurality of cover members 14A, 14B, and 14C will be described. .

まず、覆蓋部材１４Ｂのかんぬき部材２２Ｂｃを引き抜いて回動補強板２０Ｂｂを回動可能とし、図７（ａ）に示すように、覆蓋部材１４Ａを覆蓋部材１４Ｂに向けて移動させると、覆蓋部材１４Ａが覆蓋部材１４Ｂの回動補強板２０Ｂｂを押込みながら、覆蓋部材１４Ｂの内部に入り込む。   First, the pulling member 22Bc of the cover member 14B is pulled out so that the rotation reinforcing plate 20Bb can be rotated. As shown in FIG. 7A, when the cover member 14A is moved toward the cover member 14B, the cover member 14A is moved. Enters the inside of the cover member 14B while pushing in the rotation reinforcing plate 20Bb of the cover member 14B.

このように被収納部材として機能する覆蓋部材１４Ａが収納部材として機能する覆蓋部材１４Ｂに収納される際に覆蓋部材１４Ｂの回動補強板２０Ｂｂが天板１５Ｂに沿って折り畳まれる。   Thus, when the cover member 14A that functions as a member to be stored is stored in the cover member 14B that functions as a storage member, the rotation reinforcing plate 20Bb of the cover member 14B is folded along the top plate 15B.

そして、図７（ｂ）に示すように、覆蓋部材１４Ａの梁板１７Ａの外側面が覆蓋部材１４Ｂの梁板１７Ｂの内側面に設けられたクッション部材２３Ｂに突き当たるまで覆蓋部材１４Ａを押し込む。   Then, as shown in FIG. 7B, the cover member 14A is pushed in until the outer surface of the beam plate 17A of the cover member 14A hits a cushion member 23B provided on the inner surface of the beam plate 17B of the cover member 14B.

次に、覆蓋部材１４Ｃのかんぬき部材２２Ｃｃを引き抜いて回動補強板２０Ｃｂを回動可能とし、図７（ｃ）に示すように、覆蓋部材１４Ａと共に覆蓋部材１４Ｂを覆蓋部材１４Ｃに向けて移動させると、覆蓋部材１４Ｂが覆蓋部材１４Ｃの回動補強板２０Ｃｂを押込みながら、覆蓋部材１４Ｂが覆蓋部材１４Ｃの内部に入り込む。   Next, the pivot member 22Cc of the cover member 14C is pulled out so that the rotation reinforcing plate 20Cb can be rotated. As shown in FIG. 7C, the cover member 14B is moved together with the cover member 14A toward the cover member 14C. Then, the cover member 14B enters the cover member 14C while the cover member 14B pushes the rotation reinforcing plate 20Cb of the cover member 14C.

このように被収納部材として機能する覆蓋部材１４Ｂが収納部材として機能する覆蓋部材１４Ｃに収納される際に覆蓋部材１４Ｃの回動補強板２０Ｃｂが天板１５Ｃに沿って折り畳まれる。   Thus, when the cover member 14B that functions as a member to be stored is stored in the cover member 14C that functions as a storage member, the rotation reinforcing plate 20Cb of the cover member 14C is folded along the top plate 15C.

そして、覆蓋部材１４Ｂの梁板１７Ｂの外側面が覆蓋部材１４Ｃの梁板１７Ｃの内側面に設けられたクッション部材２３Ｃに突き当たるまで覆蓋部材１４Ｂを押し込む。   Then, the cover member 14B is pushed in until the outer surface of the beam plate 17B of the cover member 14B hits the cushion member 23C provided on the inner surface of the beam plate 17C of the cover member 14C.

このようにして、覆蓋部材１４Ａと覆蓋部材１４Ｂとを覆蓋部材１４Ｃの内部に収納する。   In this manner, the cover member 14A and the cover member 14B are accommodated in the cover member 14C.

水槽１２の保守点検が終了したら、開口１２ａを再び複数の覆蓋部材１４Ａ，１４Ｂ，１４Ｃによって覆う。   When the maintenance inspection of the water tank 12 is completed, the opening 12a is again covered with the plurality of cover members 14A, 14B, and 14C.

まず、覆蓋部材１４Ａを覆蓋部材１４Ｂの内部から引き出す。   First, the cover member 14A is pulled out from the cover member 14B.

このように収納部材として機能する覆蓋部材１４Ｂから被収納部材として機能する覆蓋部材１４Ａが引き出される際に回動補強板２０Ｂｂが自重に基づき垂下される。   Thus, when the cover member 14A functioning as the member to be stored is pulled out from the cover member 14B functioning as the storage member, the rotation reinforcing plate 20Bb is suspended based on its own weight.

そして、かんぬき部材２２Ｂｃをかんぬき用穴２２Ｂｂから差し込んで、かんぬき受入金具２２Ｂａに嵌合させて、回動補強板２０Ｂｂを脚板１６Ｂに固定する。   Then, the punching member 22Bc is inserted from the punching hole 22Bb, and is fitted to the punching receiving bracket 22Ba to fix the rotation reinforcing plate 20Bb to the leg plate 16B.

次に、覆蓋部材１４Ｂを覆蓋部材１４Ｃの内部から引き出す。   Next, the cover member 14B is pulled out from the inside of the cover member 14C.

このように収納部材として機能する覆蓋部材１４Ｃから被収納部材として機能する覆蓋部材１４Ｂが引き出される際に回動補強板２０Ｃｂが自重に基づき垂下される。   Thus, when the cover member 14B functioning as the member to be stored is pulled out from the cover member 14C functioning as the storage member, the rotation reinforcing plate 20Cb is suspended based on its own weight.

そして、かんぬき部材２２Ｃｃをかんぬき用穴１６Ｃｂから差し込んで、かんぬき受入金具２２Ｃａに嵌合させて、覆蓋部材１４Ｃの回動補強板２０Ｃｂを脚板１６Ｃに固定する。   Then, the punching member 22Cc is inserted through the punching hole 16Cb, and is fitted into the punching receiving metal fitting 22Ca, so that the rotation reinforcing plate 20Cb of the cover member 14C is fixed to the leg plate 16C.

このような作業を繰り返し、複数の覆蓋部材１４Ａ，１４Ｂ，１４Ｃを移動し、互いに隣接配置させることによって開口１２ａを覆う。   By repeating such an operation, the plurality of cover members 14A, 14B, and 14C are moved and arranged adjacent to each other to cover the opening 12a.

〈作用効果〉
図８（ｃ）に示されるように、例えば、覆蓋部材１４Ｃから覆蓋部材１４Ｂが引き出された場合には、覆蓋部材１４Ｃの回動補強板２０Ｃｂが自重によって垂下した状態になる。 <Function and effect>
As shown in FIG. 8C, for example, when the cover member 14B is pulled out from the cover member 14C, the rotation reinforcing plate 20Cb of the cover member 14C is suspended by its own weight.

この状態における天板１５Ｃの上端面から回動補強板２０Ｃｂの下端縁までの長さｃは、従来例の天板５Ｃの厚さａ（図８（ａ）参照）に比べて十分に長いので、天板１５Ｃが、この垂下した回動補強板２０Ｃｂにより、上からの荷重に対して補強され、スパンが比較的長い覆蓋部材１４Ｃであっても、自重により天板１５Ｃが撓むことはなく、天板１５Ｃに保守点検を行う作業者が載っても撓まない十分な強度が得られる。   In this state, the length c from the upper end surface of the top plate 15C to the lower end edge of the rotation reinforcing plate 20Cb is sufficiently longer than the thickness a of the top plate 5C of the conventional example (see FIG. 8A). The top plate 15C is reinforced against the load from above by the hanging rotation reinforcing plate 20Cb, and even if the cover member 14C has a relatively long span, the top plate 15C is not bent by its own weight. Even if an operator who performs maintenance inspection is placed on the top plate 15C, sufficient strength is obtained so as not to bend.

同様に、覆蓋部材１４Ｂについても、自重により撓むことはなく、保守点検を行う作業者が載っても撓まない十分な強度が得られる。   Similarly, the cover member 14B does not bend due to its own weight, and a sufficient strength that does not bend even if an operator who performs maintenance and inspection is placed is obtained.

また、覆蓋部材１４Ｃに覆蓋部材１４Ｂが収納された場合には、図６または図８（ｂ）に示されるように、覆蓋部材１４Ｃの回動補強板２０Ｃｂが回動して天板１５Ｃに沿って折り畳まれ、覆蓋部材１４Ｂの天板１５Ｂと覆蓋部材１４Ｃの回動補強板２０Ｃｂとの高さ方向の干渉が回避されるので、天板１５Ｂと天板１５Ｃとの段差を垂下時の回動補強板２０Ｃｂの高さ分だけ小さくすることができる。   Further, when the cover member 14B is accommodated in the cover member 14C, as shown in FIG. 6 or FIG. 8B, the rotation reinforcing plate 20Cb of the cover member 14C rotates to follow the top plate 15C. Since the interference in the height direction between the top plate 15B of the cover member 14B and the rotation reinforcing plate 20Cb of the cover member 14C is avoided, the step difference between the top plate 15B and the top plate 15C is rotated when drooping. The height can be reduced by the height of the reinforcing plate 20Cb.

同様に、覆蓋部材１４Ｂに覆蓋部材１４Ａが収納された場合には、天板１５Ａと天板１５Ｂとの段差を垂下時の回動補強板２０Ｂｂの高さ分だけ小さくすることができる。   Similarly, when the cover member 14A is housed in the cover member 14B, the step between the top plate 15A and the top plate 15B can be reduced by the height of the rotation reinforcing plate 20Bb when hanging.

したがって、従来例の覆蓋部材４Ａ，４Ｂ，４Ｃにおいて、それぞれ梁板７Ａ，７Ｂ，７Ｃを設けた場合の天板５Ａ，５Ｂ，５Ｃ間の段差（図９（ａ）参照）に比べて、本実施例の天板１５Ａ，１５Ｂ，１５Ｃ間の段差（図９（ｂ）参照）を小さくすることができて、保守点検を行う作業者が覆蓋部材上を歩くのに足下がよい。   Therefore, in the cover members 4A, 4B, and 4C of the conventional example, compared with the steps (see FIG. 9A) between the top plates 5A, 5B, and 5C when the beam plates 7A, 7B, and 7C are provided, respectively. The steps (see FIG. 9B) between the top plates 15A, 15B, and 15C of the embodiment can be reduced, and it is good for an operator who performs maintenance inspection to walk on the cover member.

更に、覆蓋部材１４Ｂの回動補強板２０Ｂｂが一対の脚板１６Ｂ，１６Ｂに固定可能とされているので、回動補強板２０Ｂｂを一対の脚板１６Ｂ，１６Ｂに固定することによって、回動補強板２０Ｂｂが不必要に動いてしまうのを防ぐことができる。   Further, since the rotation reinforcing plate 20Bb of the cover member 14B can be fixed to the pair of leg plates 16B, 16B, the rotation reinforcing plate 20Bb is fixed by fixing the rotation reinforcing plate 20Bb to the pair of leg plates 16B, 16B. Can be prevented from moving unnecessarily.

また、天板１５Ｂが回動補強板２０Ｂｂを介して一対の脚板１６Ｂ，１６Ｂに固定されるので、上からの荷重に対する天板１５Ｂの強度を一層強くすることができる。   Moreover, since the top plate 15B is fixed to the pair of leg plates 16B and 16B via the rotation reinforcing plate 20Bb, the strength of the top plate 15B with respect to the load from above can be further increased.

覆蓋部材１４Ｃについても同様に、回動補強板２０Ｃｂが不必要に動いてしまうのを防ぐことができ、上からの荷重に対する天板１５Ｃの強度を一層強くすることができる。   Similarly, with respect to the cover member 14C, the rotation reinforcing plate 20Cb can be prevented from moving unnecessarily, and the strength of the top plate 15C against the load from above can be further increased.

しかも、かんぬき部材２２Ｂｃ，２２Ｃｃによる嵌合固定だけで、簡単に、回動補強板２０Ｂｂ，２０Ｃｂを固定することができるので、覆蓋部材１４Ａ，１４Ｂを収納する作業や、引き出す作業をスムーズに行うことができ、開口１２ａの開閉作業の作業効率がよい。   In addition, since the rotation reinforcing plates 20Bb and 20Cb can be easily fixed only by fitting and fixing with the winding members 22Bc and 22Cc, the operation of storing and pulling out the cover members 14A and 14B can be performed smoothly. The opening / closing operation of the opening 12a is efficient.

以上、図面を参照して、本発明の最良の実施の形態を詳述してきたが、具体的な構成は、この実施の形態に限らず本発明の要旨を逸脱しない程度の設計的変更は本発明に含まれる。   Although the best embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes that do not depart from the gist of the present invention are not limited to this embodiment. Included in the invention.

なお、本実施例では、回動補強板２０Ｂｂ，２０Ｃｂを天板１５Ｂ，１５Ｃの幅手方向端部側に設けたが、必ずしも端部側に設ける必要はない。また、梁板１７Ｂ，１７Ｃを必ずしも設ける必要ではない。例えば、図１０に示す覆蓋部材１４Ｂの変形例のように回動補強板２０Ｂｂを天板１５Ｂの幅手方向中央部に設けてもよい。   In the present embodiment, the rotation reinforcing plates 20Bb and 20Cb are provided on the width direction end side of the top plates 15B and 15C, but are not necessarily provided on the end side. Further, the beam plates 17B and 17C are not necessarily provided. For example, the rotation reinforcing plate 20Bb may be provided at the center in the width direction of the top plate 15B as in a modification of the cover member 14B shown in FIG.

また、本実施例では、回動補強板２０Ｂｂ，２０Ｃｂを天板１５Ｂ，１５Ｃの幅手方向片側に設けたが、必ずしも、片側だけでなくてもよい。例えば、回動補強板２０Ｂｂ，２０Ｃｂを天板１５Ｂ，１５Ｃの幅手方向両側に設けてもよい。   In the present embodiment, the rotation reinforcing plates 20Bb and 20Cb are provided on one side in the width direction of the top plates 15B and 15C. For example, the rotation reinforcing plates 20Bb and 20Cb may be provided on both sides of the top plates 15B and 15C in the width direction.

そして、本実施例では、覆蓋部材１４Ａ，１４Ｂ，１４Ｃの材料にＦＦＵを用いたが、材料の素材はＦＦＵに限らない。例えば、他の樹脂素材や、木材、アルミニューム板であってもよい。   In this embodiment, FFU is used as the material for the cover members 14A, 14B, and 14C, but the material of the material is not limited to FFU. For example, other resin materials, wood, and aluminum plates may be used.

更に、本実施例では、覆蓋部材１４Ａ，１４Ｂ，１４Ｃの移動機構をレール部材１３ａ，１３ｂ，１３ｃと車輪１９Ａ，１９Ｂ，１９Ｃとによって構成したが、覆蓋部材１４Ａ，１４Ｂ，１４Ｃの移動機構はどのようなものであってもよい。例えば、電動によって開閉が行われてもよい。   Furthermore, in the present embodiment, the moving mechanism of the cover members 14A, 14B, 14C is constituted by the rail members 13a, 13b, 13c and the wheels 19A, 19B, 19C, but what is the moving mechanism of the cover members 14A, 14B, 14C? It may be something like this. For example, opening and closing may be performed electrically.

また、本実施例では、覆蓋部材１４Ａ，１４Ｂを移動させて覆蓋部材１５Ｃの内部に収納したが、覆蓋部材１４Ａ，１４Ｂ，１４Ｃのうち、どの覆蓋部材を移動させて収納してもよい
そして、本実施例では、かんぬき部材２２Ｂｃ，２２Ｃｃの嵌合によって回動補強板２０Ｂｂ，２０Ｃｂを固定したが、固定方法はどのような方法であってもよい。例えばネジによる螺合固定であってもよい。 In this embodiment, the cover members 14A and 14B are moved and stored in the cover member 15C. However, any of the cover members 14A, 14B and 14C may be moved and stored. In this embodiment, the rotation reinforcing plates 20Bb and 20Cb are fixed by fitting the yoke members 22Bc and 22Cc, but any fixing method may be used. For example, it may be fixed with screws.

従来例の水槽覆蓋システムの斜視図である。It is a perspective view of the water tank cover system of a prior art example. 従来例の水槽覆蓋システムの問題点を説明する図であり、（ａ）は図１のＡ−Ａ線に沿った断面図、（ｂ）は覆蓋部材のスパンを長くした場合の図、（ｃ）は覆蓋部材の高さとスパンとを長くすると共に梁板を設けた場合の図である。It is a figure explaining the problem of the water tank cover system of a prior art example, (a) is sectional drawing along the AA line of FIG. 1, (b) is a figure at the time of extending the span of a cover member, (c) ) Is a diagram in the case where the height and span of the cover member are lengthened and a beam plate is provided. 本発明の水槽覆蓋システムの斜視図である。It is a perspective view of the aquarium cover system of the present invention. 本発明に係る被収納部材として機能する覆蓋部材を下側から見た斜視図である。It is the perspective view which looked at the cover member which functions as a stored member which concerns on this invention from the lower side. 本発明に係る収納部材として機能する覆蓋部材を下側から見た斜視図である。It is the perspective view which looked at the cover member which functions as a storage member concerning the present invention from the lower side. 図３のＢ−Ｂ線に沿った断面図である。It is sectional drawing along the BB line of FIG. 本発明の水槽覆蓋システムの使用方法を説明する図であり、図３のＢ−Ｂ線に沿った断面図である。（ａ）は収納前の状態を表し、（ｂ）は被収納部材として機能する覆蓋部材を収納部材として機能する中央の覆蓋部材の内部に収納した状態を表し、（ｃ）は、更に中央の覆蓋部材を収納部材として機能する他の覆蓋部材に収納した状態を表している。It is a figure explaining the usage method of the water tank cover system of this invention, and is sectional drawing along the BB line of FIG. (A) represents a state before storage, (b) represents a state in which a cover member that functions as a member to be stored is stored inside a central cover member that functions as a storage member, and (c) The state which accommodated the cover member in the other cover member which functions as a storage member is represented. 本発明の水槽覆蓋システムの作用効果を説明する図であり、（ａ）は従来例の水槽覆蓋システムにおいて覆蓋部材のスパンを長くした場合の図、（ｂ）は本実施例の収納部材として機能する覆蓋部材の回動補強板が垂下した状態の図、（ｃ）は本実施例の収納部材として機能する覆蓋部材の回動補強板が天板に沿って折り畳まれた状態の図である。It is a figure explaining the effect of the water tank cover system of this invention, (a) is a figure at the time of extending the span of a cover member in the water tank cover system of a prior art example, (b) functions as a storage member of a present Example. (C) is a figure of the state where the rotation reinforcement board of the cover member which functions as a storage member of a present Example was folded along the top plate. 本発明の水槽覆蓋システムの作用効果を説明する図であり、（ａ）は従来例において、高さとスパンとを長くすると共に梁板を設けた覆蓋部材を用いた場合の収納状態の図、（ｂ）は本発明の覆蓋部材を用いた場合の収納状態の図である。It is a figure explaining the effect of the water tank cover system of the present invention, (a) is a figure of the storage state at the time of using the cover member which lengthened the height and the span and provided the beam board in the conventional example, ( b) is a diagram of the storage state when the cover member of the present invention is used. 本発明に係る収納部材として機能する覆蓋部材の一変形例の斜視図である。It is a perspective view of one modification of a cover member which functions as a storage member concerning the present invention.

符号の説明Explanation of symbols

１１ 水処理施設
１２ 水槽
１２ａ 開口
１４Ａ，１４Ｂ，１４Ｃ 覆蓋部材
１２ｂ，１２ｂ 周縁部
１５Ａ，１５Ｂ，１５Ｃ 天板
１６Ａ，１６Ｂ，１６Ｃ 脚板
２０Ａｂ，２０Ｂｂ，２０Ｃｂ 回動補強板 11 Water treatment facility 12 Water tank 12a Opening 14A, 14B, 14C Cover member 12b, 12b Peripheral part 15A, 15B, 15C Top plate 16A, 16B, 16C Leg plate 20Ab, 20Bb, 20Cb Rotation reinforcement plate

Claims (2)

水処理施設用水槽の略矩形状の上部開口を跨いで覆う少なくとも２つ以上の覆蓋部材が前記開口を跨ぐ方向に存在する一対の周縁部に沿って移動可能に設けられ、
前記覆蓋部材の一方は前記覆蓋部材の他方を収納する収納部材として機能し、前記覆蓋部材の他方は前記覆蓋部材の一方に収納される被収納部材として機能し、
前記被収納部材として機能する覆蓋部材と前記収納部材として機能する覆蓋部材とを相対移動させることにより前記開口を開閉する水槽覆蓋システムであって、
前記覆蓋部材には、前記開口を覆う天板と、該天板から下方に延びる一対の脚板とが少なくとも設けられ、
前記収納部材として機能する覆蓋部材の天板には、前記開口を跨ぐ方向に伸び且つ回動可能に取り付けられた回動補強板が設けられ、
前記収納部材として機能する覆蓋部材に前記被収納部材として機能する覆蓋部材が収納される際に前記回動補強板が天板に沿って折り畳まれ、かつ、前記被収納部材として機能する覆蓋部材が引き出される際に前記回動補強板が自重に基づき垂下されることを特徴とする水槽覆蓋システム。 At least two cover members that cover the substantially rectangular upper opening of the water tank for water treatment facilities are provided so as to be movable along a pair of peripheral edges that exist in a direction across the opening,
One of the cover members functions as a storage member that stores the other of the cover members, and the other of the cover members functions as a member to be stored that is stored in one of the cover members,
A water tank cover system that opens and closes the opening by relatively moving a cover member that functions as the member to be stored and a cover member that functions as the storage member,
The cover member is provided with at least a top plate covering the opening and a pair of leg plates extending downward from the top plate,
The top plate of the cover member that functions as the storage member is provided with a rotation reinforcing plate that extends in a direction straddling the opening and is rotatably attached.
When the cover member that functions as the member to be stored is stored in the cover member that functions as the storage member, the rotation reinforcing plate is folded along the top plate, and the cover member that functions as the member to be stored is The aquarium cover system, wherein the rotating reinforcing plate is suspended based on its own weight when pulled out. 前記回動補強板が垂下した状態で前記一対の脚板に固定可能とされていることを特徴とする請求項１に記載された水槽覆蓋システム。   The aquarium cover system according to claim 1, wherein the rotation reinforcing plate can be fixed to the pair of leg plates in a suspended state.
JP2006253861A 2006-09-20 2006-09-20 Water tank covering lid system Pending JP2008074424A (en)

Priority Applications (1)

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JP2006253861A JP2008074424A (en) 2006-09-20 2006-09-20 Water tank covering lid system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006253861A JP2008074424A (en) 2006-09-20 2006-09-20 Water tank covering lid system

Publications (1)

Publication Number Publication Date
JP2008074424A true JP2008074424A (en) 2008-04-03

Family

ID=39346898

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006253861A Pending JP2008074424A (en) 2006-09-20 2006-09-20 Water tank covering lid system

Country Status (1)

Country Link
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