JP6104015B2

JP6104015B2 - Sludge scraper and shoe equipped on it

Info

Publication number: JP6104015B2
Application number: JP2013073360A
Authority: JP
Inventors: 桂史渡辺
Original assignee: Kubota Corp
Current assignee: Kubota Corp
Priority date: 2013-03-29
Filing date: 2013-03-29
Publication date: 2017-03-29
Anticipated expiration: 2033-03-29
Also published as: JP2014195786A

Description

本発明は、汚泥処理水域の底面側と水面側とに亘る循環移動経路に沿って駆動される複数の無端回動体に、汚泥処理水域の底面に沿って汚泥を所定箇所に掻き寄せる複数のフライトが横架され、前記各フライトには、前記循環移動経路に沿って配設された移動案内レールに摺接するシューが設けられている汚泥掻き寄せ機及びそれに装備されるシューに関する。 The present invention provides a plurality of flights that scrape sludge to a predetermined location along a bottom surface of a sludge treated water area to a plurality of endless rotating bodies driven along a circulation movement path extending between a bottom surface side and a water surface side of the sludge treated water area. The present invention relates to a sludge scraper provided with a shoe that is in sliding contact with a movement guide rail disposed along the circulation movement path, and a shoe equipped thereon.

この種の汚泥掻き寄せ機では、一般に、下水処理場の沈澱池等の汚泥処理水域の底面側及び水面側に移動案内レールを配設して、無端回動体の駆動回動に伴って移動するフライトのシューの摺接面を移動案内レールに沿って摺接案内させることにより、汚泥処理水域の底面側の往行移動経路部においては、沈降・堆積している汚泥を底面に沿って所定箇所に形成されている排出溝等に確実に掻き寄せることができ、汚泥処理水域の水面側の復行移動経路部においては、浮上したスカムを所定箇所の排出部に確実に掻き寄せることができる。 In this type of sludge scraper, generally, a moving guide rail is provided on the bottom surface side and the water surface side of a sludge treatment water area such as a settling basin of a sewage treatment plant, and moves along with the drive rotation of the endless rotating body. By sliding the sliding surface of the shoe of the flight along the movement guide rail, the sludge settled and accumulated sludge is deposited along the bottom surface at a predetermined location in the outbound movement path section on the bottom side of the sludge treatment water area. In the retrograde movement path part on the water surface side of the sludge treatment water area, the floated scum can be surely scraped to the discharge part at a predetermined location.

そして、従来では、シューを、循環移動方向となる前後方向長がフライトの厚みと同一で、且つ、循環移動方向に対して直交する左右方向の幅が移動案内レールの幅よりも大に構成された摺接板部と、これの前端からフライトの前側面に沿ってＬ字状に屈曲する取付け板部とから構成するとともに、取付け板部の左右方向に箇所には、シューをフライトにボルトで締め付け固定するためのボルト挿通孔が貫通形成されている。 Conventionally, the shoe is configured such that the longitudinal length in the circulation movement direction is the same as the thickness of the flight, and the width in the left-right direction perpendicular to the circulation movement direction is larger than the width of the movement guide rail. And a mounting plate that bends in an L-shape along the front side of the flight from the front end of the sliding plate. Bolt insertion holes for tightening and fixing are formed through.

また、フライトのシュー取付け箇所には、シューのボルト挿通孔に挿通したボルトが螺合されるネジ穴を形成し、シューをフライトの前側面とそれに連続する摺接側端面とに当て付けた状態でボルトにてフライトに締め付け固定している（特許文献１〜３参照）。 In addition, a screw hole into which the bolt inserted into the bolt insertion hole of the shoe is screwed is formed at the shoe mounting location of the flight, and the shoe is applied to the front side surface of the flight and the slidable contact end surface continuous therewith And fastened to the flight with bolts (see Patent Documents 1 to 3).

実開昭６３−３２６０３号公報Japanese Utility Model Publication No. 63-32603 特開平１１−５００５号公報Japanese Patent Laid-Open No. 11-5005 特開２００３−１１７３１０号公報JP 2003-117310 A

従来の汚泥掻き寄せ機では、フライトとシューとを複数本のボルトで強固に締結しているため、一定量摩耗したシューを交換する際の取付け、取外し作業に手間がかかる。 In the conventional sludge scraper, since the flight and the shoe are firmly fastened by a plurality of bolts, it takes time to mount and remove the shoe when a certain amount of worn shoe is replaced.

特に、シューがナイロンなどの吸水性の高い材料から製作されている場合には、汚泥処理水域中で長時間の稼働に伴ってシューの含水率が高くなり、この吸水によってシューの寸法変化が生じるとともに柔らかくなる。そのため、フライトとシューとの取付けが不安定になり、運転時の荷重に耐えることができなくなる可能性がある。 In particular, when the shoe is made of a material having high water absorption, such as nylon, the moisture content of the shoe increases with long-term operation in the sludge-treated water area, and the dimensional change of the shoe occurs due to this water absorption. It becomes soft with it. For this reason, the flight and the shoe are unstablely attached and may not be able to withstand the load during operation.

本発明は、上述の実状に鑑みて為されたものであって、その主たる課題は、シュー交換時の取付け、取外し作業の容易化を図りながらシューのガタツキ発生を抑制することのできる汚泥掻き寄せ機及びそれに装備されるシューを提供する点にある。 The present invention has been made in view of the above-mentioned actual situation, and its main problem is that the sludge scraping that can suppress the occurrence of rattling of shoes while facilitating the attachment and detachment work at the time of shoe replacement. The point is to provide the machine and the shoe equipped to it.

本発明による第１の特徴構成は、汚泥処理水域の底面側と水面側とに亘る循環移動経路に沿って駆動される複数の無端回動体に、汚泥処理水域の底面に沿って汚泥を所定箇所に掻き寄せる複数のフライトが横架され、
前記各フライトには、前記循環移動経路に沿って配設された移動案内レールに摺接するシューが設けられている汚泥掻き寄せ機であって、
前記シューと前記フライトのシュー取付け部との相対向する部位には、前記循環移動経路に対する交差方向からスライド嵌合自在な嵌合手段が設けられ、この嵌合手段で所定嵌合位置に嵌合操作されている前記シューと前記フライトのシュー取付け部との嵌合離脱移動を阻止するロック手段が設けられており、
前記シューを前記所定嵌合位置に仮止め状態で係合保持する仮止め係合手段が設けられており、前記仮止め係合手段によって前記シューを前記所定嵌合位置に仮止めした後、前記ロック手段によって前記シューを固定するように構成されている点にある。 A first characteristic configuration according to the present invention is that a plurality of endless rotating bodies driven along a circulation movement path extending between a bottom surface side and a water surface side of a sludge treatment water area are disposed with a predetermined position along the bottom surface of the sludge treatment water area. Multiple flights that crawl on
Each of the flights is a sludge scraper provided with a shoe that is in sliding contact with a movement guide rail disposed along the circulation movement path,
Fitting means that can be slidably fitted from the crossing direction with respect to the circulation movement path are provided at the opposing portions of the shoe and the shoe mounting portion of the flight, and this fitting means is fitted at a predetermined fitting position. Locking means for preventing the fitting and disengagement movement between the operated shoe and the flight shoe mounting portion is provided ,
Temporarily engaging means for engaging and holding the shoe at the predetermined fitting position in a temporarily fixed state is provided, and after temporarily fixing the shoe to the predetermined fitting position by the temporary fixing engaging means, The shoe is configured to be fixed by locking means .

上記構成によれば、シューが移動案内レールに摺接した状態での無端回動体の駆動回動に伴って繰り返し作用する各種の大きな力を、嵌合手段によって循環移動経路に対する交差方向からスライド嵌合されているシューとフライトのシュー取付け部との広いスライド嵌合面で分散して受け止めることができるので、シューとフライトのシュー取付け部とのスライド嵌合面の磨滅等を抑制することができる。 According to the above configuration, various large forces that repeatedly act as the endless rotating body is driven to rotate while the shoe is in sliding contact with the movement guide rail are slid and fitted from the direction intersecting the circulation movement path by the fitting means. Since it can be dispersed and received by the wide slide fitting surface between the combined shoe and the shoe mounting portion of the flight, it is possible to suppress wear and tear of the sliding fitting surface between the shoe and the shoe mounting portion of the flight. .

しかも、スライド嵌合されたシューとフライトのシュー取付け部とは、ロック手段によって所定嵌合位置に保持されているので、シューとフライトのシュー取付け部との相対離脱移動に起因するフライトの掻き寄せ性能への悪影響を回避することができるとともに、ロック手段をロック解除操作するだけで、フライトのシュー取付け部からシューを抜き出すことができる。 Moreover, since the slide-fitted shoe and the flight shoe mounting portion are held in a predetermined fitting position by the locking means, the flight scraping due to the relative disengagement between the shoe and the flight shoe mounting portion. The adverse effect on the performance can be avoided, and the shoe can be extracted from the shoe mounting portion of the flight only by unlocking the lock means.

したがって、フライトのシュー取付け部に対するシューのスライド嵌合操作とロック手段のロック操作又はロック解除操作とを行うだけでよいので、シュー交換時の取付け、取外し作業の容易化を図りながらシューのガタツキ発生を抑制することができる。 Therefore, it is only necessary to perform the slide fitting operation of the shoe to the shoe mounting portion of the flight and the locking or unlocking operation of the locking means, so that the shoe rattles while facilitating the mounting and detaching work when replacing the shoe. Can be suppressed.

本発明による第２の特徴構成は、前記嵌合手段のスライド嵌合方向が、前記フライトの長手方向に設定されている点にある。 A second characteristic configuration according to the present invention is that a slide fitting direction of the fitting means is set in a longitudinal direction of the flight.

上記構成によれば、シューが移動案内レールに摺接した状態での無端回動体の駆動回動に伴って、フライトのシュー取付け部とシューとのスライド嵌合部位に各種方向の力が作用するが、その主体は無端回動体の回動方向及び上下方向である。
そのため、上述の如く、嵌合手段のスライド嵌合方向をフライト長手方向に設定することにより、シューとフライトのシュー取付け部との相対離脱移動を簡単なロック手段で阻止することができるばかりでなく、フライトのシュー取付け部とシューとのスライド嵌合部に形成されるフライト長手方向に沿う長い嵌合面において、無端回動体の回動方向及び上下方向の力を効果的に分散して受け止めることができる。 According to the above configuration, forces in various directions act on the slide fitting portion between the shoe mounting portion of the flight and the shoe as the endless rotating body is driven and rotated while the shoe is in sliding contact with the movement guide rail. However, the main body is the rotation direction and the vertical direction of the endless rotation body.
Therefore, as described above, by setting the slide fitting direction of the fitting means to the flight longitudinal direction, the relative separation movement between the shoe and the shoe mounting portion of the flight can be prevented by a simple locking means. In the long fitting surface along the flight longitudinal direction formed in the slide fitting portion between the shoe mounting portion and the shoe of the flight, the force in the rotating direction and the vertical direction of the endless rotating body is effectively distributed and received. Can do.

本発明による第３の特徴構成は、前記嵌合手段が、前記シューに形成された嵌合部と前記フライトのシュー取付け部に形成された被嵌合部から構成されているとともに、前記ロック手段には、前記嵌合部と前記被嵌合部とのスライド嵌合方向に対して交差する方向から係合装着することにより、所定嵌合位置にある前記嵌合部と前記被嵌合部との嵌合離脱移動を阻止するロック部材が備えられている点にある。 According to a third characteristic configuration of the present invention, the fitting means includes a fitting portion formed on the shoe and a fitted portion formed on a shoe mounting portion of the flight, and the locking means. The fitting portion and the fitted portion at a predetermined fitting position by engaging and mounting from a direction intersecting the slide fitting direction of the fitting portion and the fitted portion. There is a point that a locking member for preventing the fitting / removing movement is provided.

上記構成によれば、フライトのシュー取付け部にシューを取付ける場合、フライトのシュー取付け部側の被嵌合部に対してシュー側の嵌合部を循環移動経路に対する交差方向からスライド嵌合操作したのち、ロック部材をスライド嵌合方向と交差する方向から係合装着操作するだけで、所定嵌合位置にあるシューの嵌合部とフライトのシュー取付け部の被嵌合部との嵌合離脱移動を阻止することができる。 According to the above configuration, when the shoe is attached to the shoe mounting portion of the flight, the fitting portion on the shoe side of the fitting portion on the shoe mounting portion side of the flight is slide-fitted from the direction intersecting the circulation path. After that, just by engaging and mounting the lock member from the direction intersecting the slide fitting direction, the fitting and disengagement movement between the fitting portion of the shoe at the predetermined fitting position and the fitted portion of the shoe mounting portion of the flight is performed. Can be prevented.

しかも、このロック部材が係合装着されたロック時には、シュー側の嵌合部とシュー取付け部側の被嵌合部との相対移動が抑えられ、ロック手段によるロックの確実化を図ることができる。 In addition, when the lock member is engaged and mounted, the relative movement between the shoe-side fitting portion and the shoe attachment portion-side fitted portion is suppressed, and the locking by the locking means can be ensured. .

フライトのシュー取付け部からシューを取り外す場合も、ロック部材を係合解除操作したのち、フライトのシュー取付け部側の被嵌合部に対してシュー側の嵌合部を循環移動経路に対する交差方向に引き抜き操作するだけで済む。 Even when removing the shoe from the flight shoe mounting part, after the lock member is disengaged, the shoe-side fitting part is placed in the direction intersecting the circulating movement path with respect to the fitted part on the flight shoe mounting part side. All you have to do is pull it out.

したがって、シュー交換時の取付け、取外し作業の効率化、容易化を促進することができる。 Accordingly, it is possible to promote the efficiency and ease of attachment and detachment work during shoe replacement.

本発明による第４の特徴構成は、汚泥処理水域の底面側と水面側とに亘る循環移動経路に沿って駆動される複数の無端回動体に、汚泥処理水域の底面に沿って汚泥を所定箇所に掻き寄せる複数のフライトが横架され、
前記各フライトには、前記循環移動経路に沿って配設された移動案内レールに摺接するシューが設けられている汚泥掻き寄せ機であって、
前記シューと前記フライトのシュー取付け部との相対向する部位には、前記循環移動経路に対する交差方向からスライド嵌合自在な嵌合手段が設けられ、この嵌合手段で所定嵌合位置に嵌合操作されている前記シューと前記フライトのシュー取付け部との嵌合離脱移動を阻止するロック手段が設けられており、
前記嵌合手段が、前記シューに形成された嵌合部と前記フライトのシュー取付け部に形成された被嵌合部から構成されているとともに、前記ロック手段には、前記嵌合部と前記被嵌合部とのスライド嵌合方向に対して交差する方向から係合装着することにより、所定嵌合位置にある前記嵌合部と前記被嵌合部との嵌合離脱移動を阻止するロック部材が備えられており、
前記シューと前記ロック部材とを互いに異なる色彩に構成するとともに、前記シューには、前記ロック部材が臨む部位に摺接面の摩耗状態を確認するためのゲージ凹部又はゲージ孔が形成されている点にある。 According to a fourth characteristic configuration of the present invention, a plurality of endless rotating bodies driven along a circulation movement path extending from the bottom surface side to the water surface side of the sludge treatment water area are disposed at a predetermined position along the bottom surface of the sludge treatment water area. Multiple flights that crawl on
Each of the flights is a sludge scraper provided with a shoe that is in sliding contact with a movement guide rail disposed along the circulation movement path,
Fitting means that can be slidably fitted from the crossing direction with respect to the circulation movement path are provided at the opposing portions of the shoe and the shoe mounting portion of the flight, and this fitting means is fitted at a predetermined fitting position. Locking means for preventing the fitting and disengagement movement between the operated shoe and the flight shoe mounting portion is provided,
The fitting means includes a fitting portion formed on the shoe and a fitted portion formed on a shoe mounting portion of the flight, and the locking means includes the fitting portion and the covered portion. A locking member that prevents fitting and disengagement movement between the fitting portion and the fitted portion at a predetermined fitting position by engaging and fitting from a direction intersecting the sliding fitting direction with the fitting portion. Is provided,
The shoe and the lock member are configured in different colors, and the shoe is formed with a gauge recess or a gauge hole for confirming the wear state of the sliding contact surface at a portion where the lock member faces. It is in.

上記構成によれば、シューにゲージ凹部が形成されている場合では、シューの摺接面の摩耗に伴ってゲージ凹部の摺接面側が開口すると、その開口を通してシューとは色彩の異なるロック部材を明確に視認することが可能となり、シューの交換時期を容易に目視確認することができる。 According to the above configuration, when the gauge recess is formed in the shoe, when the sliding surface side of the gauge recess opens with wear of the sliding surface of the shoe, the lock member having a color different from that of the shoe is opened through the opening. It becomes possible to visually recognize clearly, and it is possible to easily visually confirm the shoe replacement time.

また、シューにゲージ孔が形成されている場合も、シューの摺接面の摩耗に伴ってゲージ孔の摺接面側の開口がロック部材側に近接し、それによってゲージ孔の開口を通してシューとは色彩の異なるロック部材を明確に視認することが可能となり、シューの交換時期を容易に目視確認することができる。 Also, when a gauge hole is formed in the shoe, the opening on the sliding surface side of the gauge hole comes close to the lock member side with wear of the sliding surface of the shoe. Makes it possible to clearly see the locking members of different colors and to easily visually check the shoe replacement time.

したがって、ロック部材の色彩をシューとは異ならせ、このロック部材に対応するシュー側にゲージ凹部又はゲージ孔を形成するだけの簡単な改良をもって、シューの交換時期を確実、容易に知ることがでる。 Accordingly, it is possible to reliably and easily know the replacement time of the shoe with a simple improvement in which the color of the lock member is different from that of the shoe and a gauge recess or gauge hole is formed on the shoe side corresponding to the lock member. .

本発明による第５の特徴構成は、汚泥処理水域の底面側と水面側とに亘る循環移動経路に沿って駆動される複数の無端回動体に、汚泥処理水域の底面に沿って汚泥を所定箇所に掻き寄せる複数のフライトが横架され、
前記各フライトには、前記循環移動経路に沿って配設された移動案内レールに摺接するシューが設けられている汚泥掻き寄せ機に装備される前記シューであって、
前記フライトのシュー取付け部に形成された被嵌合部に対して前記循環移動経路の交差方向からスライド嵌合する嵌合部と、当該嵌合部が所定嵌合位置にあるとき、前記シュー取付け部の被係合部と係合して前記嵌合部と前記被嵌合部との嵌合離脱移動を阻止する係合部とが形成されており、前記係合部が、前記嵌合部を前記所定嵌合位置に仮止め状態で係合保持する仮止め係合手段を構成し、仮止め状態にある前記嵌合部を前記所定嵌合位置に固定するためのロック部材を装着可能に構成されている点にある。 According to a fifth characteristic configuration of the present invention, a plurality of endless rotating bodies driven along a circulation movement path extending between a bottom surface side and a water surface side of the sludge treatment water area are disposed with a predetermined position along the bottom surface of the sludge treatment water area. Multiple flights that crawl on
In each of the flights, the shoe equipped in a sludge scraper provided with a shoe that is in sliding contact with a movement guide rail disposed along the circulation movement path,
A fitting portion that slide-fits from a crossing direction of the circulation movement path to a fitting portion formed in a shoe attachment portion of the flight, and the shoe attachment when the fitting portion is at a predetermined fitting position. An engagement portion that engages with the engaged portion of the portion and prevents the fitting portion and the fitted portion from moving out of engagement is formed, and the engaging portion is the fitting portion Is configured to temporarily hold and engage with the predetermined fitting position in a temporarily fixed state, and a lock member for fixing the fitting portion in the temporarily fixed state to the predetermined fitting position can be mounted. It is in the point which is comprised.

上記構成によれば、フライトのシュー取付け部にシューを取付ける場合、フライトのシュー取付け部側の被嵌合部に対してシュー側の嵌合部を循環移動経路に対する交差方向からスライド嵌合操作するだけで、この嵌合部が所定嵌合位置に到達したとき、シュー側の係合部がシュー取付け部側の被係合部と係合して、シュー側の嵌合部とシュー取付け部側の被嵌合部との嵌合離脱移動を阻止することができる。 According to the above configuration, when the shoe is attached to the shoe mounting portion of the flight, the fitting portion on the shoe mounting portion on the shoe mounting portion side of the flight is slide-fitted from the direction intersecting the circulation movement path. When the fitting part reaches the predetermined fitting position, the shoe side engaging part engages with the engaged part on the shoe attaching part side, and the shoe side fitting part and the shoe attaching part side It is possible to prevent the fitting / removal movement with the fitted portion.

本願発明の第１実施形態の汚泥掻き寄せ機を設置した沈殿池の全体縦断面図Whole longitudinal cross-sectional view of the sedimentation basin in which the sludge scraper according to the first embodiment of the present invention is installed 図１におけるII-II線断面図II-II sectional view in FIG. 図１におけるIII-III線断面図III-III sectional view in FIG. フライトのシュー取付け箇所全体の分解斜視図An exploded perspective view of the entire flight shoe mounting location 内周側シュー取付け部と内周側シューとの分解斜視図Disassembled perspective view of inner shoe mounting part and inner shoe 内周側シューを取付けた状態での内周側シュー取付け部の表面側の斜視図Front surface perspective view of inner shoe mounting part with inner shoe installed 一方のロック部材を装着したときの内周側シュー取付け部の表面図Surface view of inner shoe mounting part when one lock member is installed 図７におけるVIII-VIII線断面図VIII-VIII sectional view in FIG. 図７におけるIX-IX線断面図IX-IX sectional view in FIG. 図７におけるX-X線断面図XX sectional view in FIG. 外周側シュー取付け部と外周側シューとの分解斜視図Exploded perspective view of outer shoe mounting part and outer shoe 図１３におけるXII- XII線断面図XII-XII sectional view in FIG. 一方のロック部材を装着したときの外周側シュー取付け部の裏面図Back view of outer shoe mounting part when one lock member is installed 図１３におけるXIV-XIV線断面図XIV-XIV cross-sectional view in FIG. 本願発明の第２実施形態を示す要部の拡大断面図The expanded sectional view of the principal part which shows 2nd Embodiment of this invention.

〔第１実施形態〕
図１は、汚泥掻き寄せ機の一例を示す。この汚泥掻き寄せ機Ｂは例えば、水処理設備における沈澱池Ａの汚泥処理水域に配置される。 [First Embodiment]
FIG. 1 shows an example of a sludge scraper. This sludge scraper B is disposed, for example, in the sludge treatment water area of the settling basin A in the water treatment facility.

この汚泥掻き寄せ機Ｂにおいて、汚泥掻き寄せ具としてのフライト１を回動方向に所定間隔を隔てて取り付けてある左右一対の無端チェーン（無端回動体の一例）２の夫々が、駆動回転体としての駆動スプロケット３と、従動回転体４としての第１〜第３従動スプロケット４ａ，４ｂ，４ｃとに亘って回動自在に巻き掛けられ、駆動スプロケット３を駆動回転させる駆動装置５を設けてある。 In this sludge scraper B, each of a pair of left and right endless chains (an example of an endless rotating body) 2 to which the flight 1 as a sludge scraping tool is attached at a predetermined interval in the rotating direction is used as a driving rotating body. The drive sprocket 3 and the first to third driven sprockets 4 a, 4 b, 4 c as the driven rotating body 4 are wound around the drive sprocket 3, and a drive device 5 for driving and rotating the drive sprocket 3 is provided. .

駆動スプロケット３は、沈澱池Ａの長手方向の汚泥掻き寄せ側端部における水面ＷＬ近くに軸支され、第１従動スプロケット４ａは、沈澱池Ａの長手方向の略中央位置における水面ＷＬ近くに軸支され、第２，第３従動スプロケット４ｂ，４ｃは、沈澱池Ａの長手方向両端側における底面６近くに軸支されている。 The drive sprocket 3 is pivotally supported near the water surface WL at the sludge scraping side end in the longitudinal direction of the sedimentation basin A, and the first driven sprocket 4a is pivoted near the water surface WL at a substantially central position in the longitudinal direction of the sedimentation basin A. The second and third driven sprockets 4b and 4c are pivotally supported near the bottom surface 6 at both longitudinal ends of the sedimentation basin A.

駆動装置５による駆動スプロケット３の駆動回転で、左右一対の無端チェーン２を駆動回動させて、各フライト１を、駆動スプロケット３，第１従動スプロケット４ａ，第２従動スプロケット４ｂ，第３従動スプロケット４ｃの順に経由する循環移動経路Ｒに沿って循環移動させる。 By driving and rotating the driving sprocket 3 by the driving device 5, the pair of left and right endless chains 2 are driven and rotated, so that each flight 1 is driven by the driving sprocket 3, the first driven sprocket 4a, the second driven sprocket 4b, and the third driven sprocket. It is made to circulate along the circular movement route R that goes through in the order of 4c.

この循環移動経路Ｒのうち、第２従動スプロケット４ｂと第３従動スプロケット４ｃとの間において、汚泥処理水域の底面６側に沿って各フライト１が略水平に移動するチェーン張り側を往行移動経路部Ｒ１とし、さらに、駆動スプロケット３と第２従動スプロケット４ｂとの間において、汚泥処理水域の水面ＷＬ側に沿って各フライト１が略水平に移動したのち底面6側に向かって斜めに移動するチェーン緩み側を復行移動経路部Ｒ２とする。 In this circulating movement route R, the second driven sprocket 4b and the third driven sprocket 4c travel on the chain tension side where each flight 1 moves substantially horizontally along the bottom surface 6 side of the sludge treated water area. Further, each flight 1 moves substantially horizontally along the water surface WL side of the sludge treated water area between the driving sprocket 3 and the second driven sprocket 4b and then moves obliquely toward the bottom surface 6 side between the driving sprocket 3 and the second driven sprocket 4b. The chain loosening side to be used is defined as a backward movement path portion R2.

第２従動スプロケット４ｂ側から第３従動スプロケット４ｃ側に向かう往行移動経路部Ｒ１でのフライト１の水平移動により、沈澱池Ａの底面６側に沈降・堆積している汚泥を沈澱池Ａの底部の所定汚泥排出箇所に設けてある汚泥ピット７に掻き寄せる。 Due to the horizontal movement of the flight 1 in the forward movement path portion R1 from the second driven sprocket 4b side to the third driven sprocket 4c side, sludge that has settled and accumulated on the bottom surface 6 side of the precipitation basin A is removed. It rakes into the sludge pit 7 provided at a predetermined sludge discharge location at the bottom.

また、駆動スプロケット３側から第１従動スプロケット４ａ側に向かう復行移動経路部Ｒ２でのフライト１の水平移動により、沈澱池Ａの汚泥処理水域の水面ＷＬ近くに浮いているスカムをスカムスキマ（図示せず）に掻き寄せる。 Further, the scum floating near the water surface WL in the sludge treatment water area of the sedimentation basin A due to the horizontal movement of the flight 1 in the backward movement path portion R2 from the drive sprocket 3 side to the first driven sprocket 4a side is scum skimmer (see FIG. (Not shown).

図１、図２に示すように、駆動スプロケット３の上方には、駆動スプロケット３の外周に沿って無端チェーン２を案内するチェーンガイド８が設けられ、無端チェーン２が駆動スプロケット３とチェーンガイド８との間に入り込むことにより、無端チェーン２が案内される。 As shown in FIGS. 1 and 2, a chain guide 8 that guides the endless chain 2 along the outer periphery of the drive sprocket 3 is provided above the drive sprocket 3, and the endless chain 2 is connected to the drive sprocket 3 and the chain guide 8. , The endless chain 2 is guided.

フライト１は、沈降・堆積している汚泥及び浮上したスカムの掻き寄せ機能を備えた長手方向中間側のフライト本体９と、当該フライト本体９の長手方向両端部に脱着可能にボルト等で固定連結される合成樹脂製の取付け基材１０とから構成されている。 The flight 1 is fixedly connected with bolts or the like so that it can be attached to and detached from both ends in the longitudinal direction of the flight body 9 with a function of scraping sediment and accumulated sludge and floating scum. It is comprised from the synthetic resin attachment base material 10 made.

フライト１の両取付け基材１０における循環移動経路Ｒの外周側部位には、復行移動経路部Ｒ２での移動時にチェーンガイド８が入り込む左右一対の凹部１１が切欠き形成されている。 A pair of left and right recesses 11 into which the chain guide 8 enters when moving along the return movement path portion R2 are formed in the outer peripheral side portion of the circulation movement path R in both the attachment base materials 10 of the flight 1.

図１に示すように、沈澱池Ａの底面６には、フライト１の長手方向（左右方向）の全長よりも少し短い間隔で当該フライト１を往行移動経路部Ｒ１に沿って摺接状態で水平方向に移動案内する一対の移動案内レール（以下、底面側移動案内レールと記載する）１２が設けられているとともに、フライト１の両取付け基材１０における循環移動経路Ｒの外周側部位で、且つ、両凹部１１のフライト本体９側（フライト１の長手方向中央側）に連なる外周側シュー取付け部１０Ａには、底面側移動案内レール１２の上面に摺接する合成樹脂製（例えば、ナイロン６製）のシュー（以下、外周側シューと記載する）１３が脱着可能に取付けられている。 As shown in FIG. 1, the bottom surface 6 of the sedimentation basin A is slidably contacted with the flight 1 along the outbound movement path portion R 1 at intervals slightly shorter than the total length in the longitudinal direction (left-right direction) of the flight 1. A pair of movement guide rails (hereinafter, referred to as bottom side movement guide rails) 12 for moving and guiding in the horizontal direction are provided, and at the outer peripheral side portion of the circulating movement route R in both mounting base materials 10 of the flight 1, In addition, the outer shoe mounting portion 10A connected to the flight main body 9 side (longitudinal direction center side of the flight 1) of both concave portions 11 is made of a synthetic resin (for example, made of nylon 6) that is in sliding contact with the upper surface of the bottom side moving guide rail 12. ) 13 (hereinafter referred to as the outer peripheral shoe) is detachably attached.

底面側移動案内レール１２は、特に構造面及び材質面で限定はされないが、例えば、沈澱池Ａの底面６に固定されたレール基材の上面に樹脂製の帯板部材を固定することにより構成されている。 The bottom-side moving guide rail 12 is not particularly limited in terms of structure and material, but for example, is configured by fixing a resin strip member on the top surface of a rail base material fixed to the bottom surface 6 of the sedimentation basin A. Has been.

また、図１及び図３に示すように、復行移動経路部Ｒ２に沿って移動するフライト１の両取付け基材１０の下方側には、フライト１の長手方向の全長に略相当する間隔で当該フライト１を復行移動経路部Ｒ２に沿って摺接状態で水平方向に移動案内する一対の移動案内レール（以下、水面側移動案内レールと記載する）１４が設けられている。 Further, as shown in FIGS. 1 and 3, on the lower side of both attachment base materials 10 of the flight 1 moving along the retrograde movement route portion R 2, an interval substantially corresponding to the entire length in the longitudinal direction of the flight 1 is provided. A pair of movement guide rails (hereinafter referred to as water surface side movement guide rails) 14 are provided for moving and guiding the flight 1 in the horizontal direction in a sliding contact state along the backward movement path portion R2.

さらに、フライト１の両取付け基材１０における循環移動経路Ｒの内周側部位で、且つ、両凹部１１よりもフライト１の長手方向端部側に位置する内周側シュー取付け部１０Ｂには、水面側移動案内レール１４の上面に摺接する合成樹脂製（例えば、ナイロン６製）のシュー（以下、内周側シューと記載する）１５が脱着可能に取付けられている。 Furthermore, in the inner peripheral side shoe mounting portion 10B located on the inner peripheral side portion of the circulating movement path R in the both mounting base materials 10 of the flight 1 and on the end side in the longitudinal direction of the flight 1 relative to the both concave portions 11, A synthetic resin (for example, nylon 6) shoe 15 (hereinafter referred to as an inner peripheral shoe) 15 slidably contacting the upper surface of the water surface side moving guide rail 14 is detachably attached.

外周側シュー１３及び内周側シュー１５は、両取付け基材１０の外周側シュー取付け部１０Ａ及び内周側シュー取付け部１０Ｂに対するスライド嵌合操作時の向き姿勢が逆転するものの、同一形状のものが用いられている。 The outer periphery side shoe 13 and the inner periphery side shoe 15 have the same shape, although the orientations and orientations during the slide fitting operation with respect to the outer periphery side shoe attachment portion 10A and the inner periphery side shoe attachment portion 10B of both attachment base materials 10 are reversed. Is used.

また、図３に示すように、水面側移動案内レール１４は、特に構造面及び材質面で限定はされないが、例えば、左右一対の樹脂製の帯板部材を沈澱池Ａの側壁１６に所定間隔毎に設けたブラケット１７上に固定することにより構成されている。 As shown in FIG. 3, the water surface side moving guide rail 14 is not particularly limited in terms of the structure surface and the material surface. For example, a pair of left and right resin strip members are provided at predetermined intervals on the side wall 16 of the settling basin A. It is comprised by fixing on the bracket 17 provided for every.

次に、フライト１の両取付け基材１０と外周側シュー１３及び内周側シュー１５との取付け構造について説明する。 Next, the attachment structure of both the attachment base materials 10 of the flight 1 and the outer peripheral side shoe 13 and the inner peripheral side shoe 15 will be described.

図４〜図１４に示すように、取付け基材１０の外周側シュー取付け部１０Ａと外周側シュー１３との相対向する部位、及び、取付け基材１０の内周側シュー取付け部１０Ｂと内周側シュー１５との相対向する部位には、循環移動経路Ｒに対する交差方向の一例であるフライト１の長手方向の外方側からスライド嵌合自在な嵌合手段Ｃが設けられ、この嵌合手段Ｃで所定嵌合位置に嵌合操作されている外周側シュー１３及び内周側シュー１５が取付け基材１０の外周側シュー取付け部１０Ａ及び内周側シュー取付け部１０Ｂに対して嵌合離脱移動することを阻止するロック手段Ｄが設けられている。 As shown in FIGS. 4 to 14, the opposing portions of the outer peripheral shoe mounting portion 10 A and the outer peripheral shoe 13 of the mounting base material 10, and the inner peripheral shoe mounting portion 10 B and the inner peripheral surface of the mounting base material 10. A fitting means C that can be slidably fitted from the outer side in the longitudinal direction of the flight 1, which is an example of a crossing direction with respect to the circulation movement path R, is provided at a portion facing the side shoe 15. The outer peripheral side shoe 13 and the inner peripheral side shoe 15 that have been fitted and operated at a predetermined fitting position in C are engaged and disengaged with respect to the outer peripheral side shoe mounting portion 10A and the inner peripheral side shoe mounting portion 10B of the mounting base 10. Locking means D is provided to prevent this.

取付け基材１０の外周側シュー取付け部１０Ａは、図４、図１１に示すように、取付け基材１０の外周側部位における凹部１１のフライト本体９側に連なる部位に、循環移動方向の前後に位置する一対の外側板部２１と、この両外側板部２１間のフライト長手方向中央側を閉塞する横側板部２２と、両外側板部２１の内面との対向間にそれぞれ凹部１１側及び循環移動経路Ｒの外周側に開口する嵌合操作溝２３を区画形成する一対の仕切り板部２４とを一体形成して構成されている。 As shown in FIG. 4 and FIG. 11, the outer periphery side shoe attachment portion 10 A of the attachment base material 10 is arranged on the outer peripheral side portion of the attachment base material 10 at the front and back in the circulation movement direction. Between the pair of outer plate portions 21 positioned, the lateral plate portion 22 closing the flight longitudinal center between the outer plate portions 21, and the inner surfaces of the outer plate portions 21, the recess 11 side and the circulation are respectively provided. A pair of partition plate portions 24 that define and form a fitting operation groove 23 that opens on the outer peripheral side of the movement path R are formed integrally.

そして、両外側板部２１と横側板部２２及び両仕切り板部２４との連続する各端面をもって、外周側シュー１３の被取付け面１３aに対する水平なシュー取付け面１０aが形成されている。 A horizontal shoe attachment surface 10a with respect to the attachment surface 13a of the outer peripheral side shoe 13 is formed by the continuous end surfaces of the outer side plate portion 21, the lateral side plate portion 22, and the both partition plate portions 24.

取付け基材１０の内周側シュー取付け部１０Ｂは、図４〜図７、図１０に示すように、取付け基材１０の内周側部位におけるフライト１の長手方向端部側の部位に、循環移動方向の前後に位置する一対の外側板部２５と、この両外側板部２５の内面に対面する状態でフライト長手方向に沿って平行に配置される二つの第１内側板部２６と、この両第１内側板部２６に対面する状態でフライト長手方向に沿って平行に配置される二つの第２内側板部２７と、これら六つの側板部２５、２６、２７を横断面視において角波形状に繋ぐ五つの繋ぎ板部２８とを一体形成し、両外側板部２５とこれに隣接する第１内側板部２６との対向面間の各々に、フライト１の長手方向外方側及び循環移動経路Ｒの内周側に開口する嵌合操作溝２９を形成して構成されている。 As shown in FIGS. 4 to 7 and 10, the inner periphery side shoe attachment portion 10 B of the attachment base material 10 circulates in the longitudinal direction end portion side portion of the flight 1 in the inner peripheral side portion of the attachment base material 10. A pair of outer plate portions 25 positioned before and after the moving direction, two first inner plate portions 26 arranged in parallel along the flight longitudinal direction in a state of facing the inner surfaces of both outer plate portions 25, and Two second inner plate portions 27 arranged in parallel along the flight longitudinal direction in a state of facing both first inner plate portions 26 and these six side plate portions 25, 26, 27 are angular waves in a cross-sectional view. Five connecting plate portions 28 connected to the shape are integrally formed, and the outer side in the longitudinal direction of the flight 1 and the circulation are provided between the opposing surfaces of the outer side plate portions 25 and the first inner side plate portion 26 adjacent thereto. Formed by forming a fitting operation groove 29 opening on the inner peripheral side of the moving path R It has been.

繋ぎ板部２８は、外側板部２５と第１内側板部２６との外周側端部同士を繋ぐ第１繋ぎ板部２８Ａと、第１内側板部２６と第２内側板部２７との内周側端部同士を繋ぐ第２繋ぎ板部２８Ｂと、両第２内側板部２７の外周側端部同士を繋ぐ第３繋ぎ板部２８Ｃとから構成されている。 The connecting plate portion 28 includes the first connecting plate portion 28 A that connects the outer peripheral side ends of the outer plate portion 25 and the first inner plate portion 26, the first inner plate portion 26, and the second inner plate portion 27. It is comprised from the 2nd connection board part 28B which connects peripheral side edge parts, and the 3rd connection board part 28C which connects the outer peripheral side edge parts of both the 2nd inner side board parts 27. FIG.

そして、両外側板部２５の内周側端面及び両第２繋ぎ板部２８Ｂの内周側外面をもって、内周側シュー１５の被取付け面１５aに対する水平なシュー取付け面１０ｂが形成されている。 And the horizontal shoe attachment surface 10b with respect to the to-be-attached surface 15a of the inner peripheral side shoe 15 is formed with the inner peripheral side end surface of both the outer side board parts 25, and the inner peripheral side outer surface of both the 2nd connection board part 28B.

図４、図１１に示すように、取付け基材１０の外周側シュー取付け部１０Ａと外周側シュー１３との対向面間に形成される前記嵌合手段Ｃを構成するに、外周側シュー１３の被取付け面１３ａの四か所、つまり、被取付け面１３ａにおける幅方向両側部（循環移動方向の両側部）で、且つ、長手方向両側部（フライト長手方向の両側部）の四か所には、外周側シュー取付け部１０Ａの両嵌合操作溝２３に対してフライト長手方向から係入可能なスライド突起３１が一体形成され、各スライド突起３１における外周側シュー取付け部１０Ａの外側板部２１の内面と対面する側面には、嵌合部の一例である横断面略台形溝状のアリ溝３２が形成されている。 As shown in FIGS. 4 and 11, in order to constitute the fitting means C formed between the opposing surfaces of the outer peripheral shoe mounting portion 10 A of the mounting base material 10 and the outer peripheral shoe 13, There are four places on the attachment surface 13a, that is, both sides in the width direction (both sides in the circulation movement direction) on the attachment surface 13a and four places on both sides in the longitudinal direction (both sides in the flight longitudinal direction). The slide projections 31 that can be engaged with the fitting operation grooves 23 of the outer shoe mounting portion 10A from the flight longitudinal direction are integrally formed, and the outer plate portion 21 of the outer shoe mounting portion 10A of each slide projection 31 is formed. On the side surface facing the inner surface, a dovetail groove 32 having a substantially trapezoidal cross-sectional shape as an example of the fitting portion is formed.

さらに、外周側シュー取付け部１０Ａの両外側板部２１の内面には、外周側シュー１３のアリ溝３２がフライト長手方向からスライド自在（摺動自在）に嵌合する被嵌合部の一例である横断面略台形状のアリ突起３３が形成されている。 Furthermore, an example of a fitted portion in which the dovetail 32 of the outer shoe 13 is slidable (slidable) from the longitudinal direction of the flight on the inner surfaces of both outer side plate portions 21 of the outer shoe mounting portion 10A. A certain ant protrusion 33 having a substantially trapezoidal cross section is formed.

そして、外周側シュー取付け部１０Ａのアリ突起３３と外周側シュー１３のアリ溝３２とのスライド嵌合により、外周側シュー取付け部１０Ａに対して外周側シュー１３をガタツキの無い状態でスライド操作することができる。 The outer shoe 13 is slid with respect to the outer shoe mounting portion 10 A by the sliding fit between the dovetail projection 33 of the outer shoe mounting portion 10 A and the dovetail groove 32 of the outer shoe 13. be able to.

図４〜図７、図１０に示すように、取付け基材１０の内周側シュー取付け部１０Ｂと内周側シュー１５との対向面間に形成される前記嵌合手段Ｃを構成するに、内周側シュー１５の被取付け面１５ａの四か所、つまり、被取付け面１５ａにおける幅方向両側部（循環移動方向の両側部）で、且つ、長手方向両側部（フライト長手方向の両側部）の四か所には、内周側シュー取付け部１０Ｂの両嵌合操作溝２９に対してフライト長手方向から係入可能なスライド突起３５が一体形成され、各スライド突起３５における内周側シュー取付け部１０Ｂの外側板部２５の内面と対面する側面には、嵌合部の一例である横断面略台形溝状のアリ溝３６が形成されている。 As shown in FIG. 4 to FIG. 7 and FIG. 10, the fitting means C formed between the opposing surfaces of the inner peripheral shoe mounting portion 10 B and the inner peripheral shoe 15 of the mounting base 10 is configured. Four places on the mounting surface 15a of the inner peripheral side shoe 15, that is, both sides in the width direction (both sides in the circulation movement direction) and both sides in the longitudinal direction (both sides in the flight longitudinal direction) of the mounting surface 15a. 4 are integrally formed with slide projections 35 that can be engaged with both fitting operation grooves 29 of the inner shoe mounting portion 10B from the longitudinal direction of the flight. A dovetail groove 36 having a substantially trapezoidal cross section, which is an example of a fitting portion, is formed on a side surface of the portion 10B facing the inner surface of the outer plate portion 25.

さらに、内周側シュー取付け部１０Ｂの両外側板部２５の内面には、内周側シュー１５のアリ溝３６がフライト長手方向からスライド自在（摺動自在）に嵌合する被嵌合部の一例である横断面略台形状のアリ突起３７が形成されている。 Further, on the inner surfaces of both outer side plate portions 25 of the inner peripheral side shoe mounting portion 10B, a dovetail portion 36 of the inner peripheral side shoe 15 is slidable (slidable) from the flight longitudinal direction. An ant protrusion 37 having a substantially trapezoidal cross section as an example is formed.

次に、図４〜図７、図９に示すように、嵌合手段Ｃで所定嵌合位置に嵌合操作されている内周側シュー１５が取付け基材１０の内周側シュー取付け部１０Ｂに対して嵌合離脱移動することを阻止する前記ロック手段Ｄには、アリ溝３６とアリ突起３７とのスライド嵌合方向に対して直交方向（交差方向の一例）から係合装着することにより、内周側シュー取付け部１０Ｂのアリ突起３７に対して所定嵌合位置に嵌合操作された内周側シュー１５のアリ溝３６の嵌合離脱移動を阻止する合成樹脂製のロック部材４０が備えられている。 Next, as shown in FIGS. 4 to 7 and FIG. 9, the inner peripheral shoe 15 that has been fitted to the predetermined fitting position by the fitting means C is the inner peripheral shoe mounting portion 10 B of the mounting base 10. The locking means D for preventing the fitting and disengagement movement from being engaged with each other by engaging and mounting from the direction orthogonal to the slide fitting direction of the dovetail groove 36 and the dovetail protrusion 37 (an example of the crossing direction). A lock member 40 made of a synthetic resin that prevents the dovetail groove 36 of the inner periphery side shoe 15 from being engaged with the dovetail protrusion 37 of the inner periphery side shoe mounting portion 10B at a predetermined engagement position is provided. Is provided.

このロック部材４０には、内周側シュー取付け部１０Ｂの第１内側板部２６と第２内側板部２７との対向面間に形成されているロック操作溝４１に対して外周側から係入可能な略Ｔ字状のロック板部４０Ａと、内周側シュー取付け部１０Ｂの第１繋ぎ板部２８Ａに形成された窪み部４２に入り込む状態で外周側から当接するロック頭部４０Ｂとが備えられ、ロック板部４０Ａの基端側にロック頭部４０Ｂが一体形成されている。 The lock member 40 is engaged with the lock operation groove 41 formed between the opposing surfaces of the first inner plate portion 26 and the second inner plate portion 27 of the inner shoe portion 10B from the outer periphery side. A substantially T-shaped lock plate portion 40A that is possible, and a lock head portion 40B that abuts from the outer peripheral side in a state of entering the recess 42 formed in the first connecting plate portion 28A of the inner peripheral shoe attachment portion 10B. The lock head 40B is integrally formed on the base end side of the lock plate portion 40A.

ロック板部４０Ａには、ロック操作溝４１に設けられた一対のロックガイド壁４３に沿って挿入可能で、且つ、ロックガイド壁４３から離間する側に撓み変形可能な一対の略Ｌ字状の抜止め片４０Ｃが一体形成され、各抜止め片４０Ｃの先端部には、ロック部材４０がロック操作位置に差し込まれたとき、ロックガイド壁４３の先端４３ａに係止してロック部材４０の抜け出しを阻止する係止爪４０Ｄが一体形成されている。 The lock plate portion 40A can be inserted along a pair of lock guide walls 43 provided in the lock operation groove 41, and can be bent and deformed away from the lock guide wall 43. The retaining pieces 40C are integrally formed. When the lock member 40 is inserted into the locking operation position at the distal end portion of each retaining piece 40C, the retaining member 40C is engaged with the distal end 43a of the lock guide wall 43 and the locking member 40 is pulled out. A locking claw 40D is integrally formed.

両係止爪４０Ｄの係止間隔は、両ロックガイド壁４３の対向面間の間隔よりも両係止爪４０Ｄの係止代だけ広く構成されているとともに、各係止爪４０Ｄの先端には、ロック操作溝４１への差し込み時に、両ロックガイド壁４３の入口周縁との当接に連れて両係止爪４０Ｄを通過可能な間隔にまで撓み変形させるための傾斜ガイド面４０ａが形成されている。 The locking interval between both locking claws 40D is configured to be wider than the interval between the opposing surfaces of both lock guide walls 43 by the locking allowance of both locking claws 40D, and at the tip of each locking claw 40D. An inclined guide surface 40a is formed to bend and deform to an interval that allows the passage of both locking claws 40D with the contact with the peripheral edges of the inlets of the lock guide walls 43 when inserted into the lock operation groove 41. Yes.

ロック部材４０の係止爪４０Ｄがロックガイド壁４３の先端４３ａに係止している状態では、図９に示すように、ロック板部４０Ａの先端４０ｂが内周側シュー取付け部１０Ｂのシュー取付け面１０ｂより内方側（内周側シュー１５の被取付け面１５ａから離れる側）に配置されている。 In a state where the locking claw 40D of the lock member 40 is locked to the tip 43a of the lock guide wall 43, as shown in FIG. 9, the tip 40b of the lock plate portion 40A is attached to the shoe of the inner peripheral side shoe mounting portion 10B. It is arranged on the inner side (the side away from the mounting surface 15a of the inner peripheral shoe 15) from the surface 10b.

このロック板部４０Ａの先端４０ｂの配置構成により、ロック板部４０Ａの先端４０ｂが摩耗することを回避することができるとともに、内周側シュー１５の後述の摩耗状態確認用のゲージ凹部５８が摩耗によって開口した場合でも、ロック部材４０がロック解除されることを抑制することができる。 With the arrangement configuration of the tip 40b of the lock plate portion 40A, it is possible to avoid the tip 40b of the lock plate portion 40A from being worn, and the later-described wear state confirmation gauge recess 58 of the inner peripheral shoe 15 is worn. Even when the opening is made, the unlocking of the lock member 40 can be suppressed.

ロックガイド壁４３の先端４３ａに係止しているロック部材４０の係止爪４０Ｄを弾性復元力に抗して係止解除操作する場合、内周側シュー取付け部１０Ｂの第１繋ぎ板部２８Ａに形成された窪み部４２の内周側外面とロック部材４０のロック頭部４０Ｂとの間に存在する若干のガタによる隙間にドライバー等の図外の係止解除操作具を差し入れて強制的に係止解除する。 When the locking claw 40D of the lock member 40 locked to the tip 43a of the lock guide wall 43 is unlocked against the elastic restoring force, the first connecting plate portion 28A of the inner periphery side shoe mounting portion 10B. A forcible unlocking operation tool such as a screwdriver is inserted into a gap formed by a slight play between the inner peripheral side outer surface of the recessed portion 42 and the lock head portion 40B of the lock member 40 to forcibly. Release the lock.

尚、ロックガイド壁４３の先端４３ａに係止しているロック部材４０の係止爪４０Ｄを直接係止解除するように構成してもよい。 In addition, you may comprise so that the latching claw 40D of the lock member 40 latched to the front-end | tip 43a of the lock guide wall 43 may be latched directly.

ロック部材４０のロック頭部４０Ｂには、第１繋ぎ板部２８Ａの窪み部４２に貫通形成された挿通孔４６を通して内周側シュー１５の被取付け面１５ａの二か所に一体形成されたロック突起４７の先端側の係合凹部４８に係合するロック片４０Ｅが一体形成されている。 The lock head 40B of the lock member 40 has a lock integrally formed at two locations on the mounting surface 15a of the inner peripheral shoe 15 through an insertion hole 46 formed through the recess 42 of the first connecting plate portion 28A. A lock piece 40 E that engages with the engagement recess 48 on the tip side of the protrusion 47 is integrally formed.

次に、図４、図１１〜図１４に示すように、嵌合手段Ｃで所定嵌合位置に嵌合操作されている外周側シュー１３が取付け基材１０の外周側シュー取付け部１０Ａに対して嵌合離脱移動することを阻止する前記ロック手段Ｄには、上述と同様に、アリ溝３２とアリ突起３３とのスライド嵌合方向に対して直交方向（交差方向の一例）から係合装着することにより、外周側シュー取付け部１０Ａのアリ突起３３に対して所定嵌合位置に嵌合操作された外周側シュー１３のアリ溝３２の嵌合離脱移動を阻止する同一形状の合成樹脂製のロック部材４０が備えられている。 Next, as shown in FIGS. 4 and 11 to 14, the outer shoe 13 fitted to the predetermined fitting position by the fitting means C is attached to the outer shoe attaching portion 10 A of the attachment base 10. In the same manner as described above, the locking means D for preventing the fitting and disengagement movement is engaged and mounted from the direction perpendicular to the sliding fitting direction of the dovetail groove 32 and the dovetail protrusion 33 (an example of the crossing direction). By doing so, it is made of a synthetic resin of the same shape that prevents the dovetail movement of the dovetail groove 32 of the outer periphery side shoe 13 that has been fitted to the dovetail projection 33 of the outer periphery side shoe mounting portion 10A at the predetermined fitting position. A locking member 40 is provided.

このロック部材４０には、外周側シュー取付け部１０Ａのロック操作溝４９に対して内周側から係入可能な略Ｔ字状のロック板部４０Ａと、外周側シュー取付け部１０Ａの内周側に形成された窪み部４２に入り込む状態で内周側から当接するロック頭部４０Ｂとが備えられ、ロック板部４０Ａの基端側にロック頭部４０Ｂが一体形成されている。 The lock member 40 includes a substantially T-shaped lock plate portion 40A that can be engaged with the lock operation groove 49 of the outer periphery side shoe attachment portion 10A from the inner periphery side, and the inner periphery side of the outer periphery side shoe attachment portion 10A. And a lock head 40B that abuts from the inner peripheral side in a state of entering the recess 42, and the lock head 40B is integrally formed on the base end side of the lock plate 40A.

ロック板部４０Ａには、ロック操作溝４９に設けられた一対のロックガイド壁４３に沿って挿入可能で、且つ、ロックガイド壁４３から離間する側に撓み変形可能な一対の略Ｌ字状の抜止め片４０Ｃが一体形成され、各抜止め片４０Ｃの先端部には、ロック部材４０がロック操作位置に差し込まれたとき、ロックガイド壁４３の先端４３ａに係止してロック部材４０の抜け出しを阻止する係止爪４０Ｄが一体形成されている。 In the lock plate portion 40A, a pair of substantially L-shapes that can be inserted along a pair of lock guide walls 43 provided in the lock operation groove 49 and can be bent and deformed away from the lock guide walls 43. The retaining pieces 40C are integrally formed. When the lock member 40 is inserted into the locking operation position at the distal end portion of each retaining piece 40C, the retaining member 40C is engaged with the distal end 43a of the lock guide wall 43 and the locking member 40 is pulled out. A locking claw 40D is integrally formed.

両係止爪４０Ｄの係止間隔は、両ロックガイド壁４３の対向面間の間隔よりも両係止爪４０Ｄの係止代だけ広く構成されているとともに、各係止爪４０Ｄの先端には、ロック操作溝４９への差し込み時に、両ロックガイド壁４３の入口周縁との当接に連れて両係止爪４０Ｄを通過可能な間隔にまで撓み変形させるための傾斜ガイド面４０ａが形成されている。 The locking interval between both locking claws 40D is configured to be wider than the interval between the opposing surfaces of both lock guide walls 43 by the locking allowance of both locking claws 40D, and at the tip of each locking claw 40D. An inclined guide surface 40a is formed to bend and deform to an interval that allows the passage of both locking claws 40D when the locking operation groove 49 is inserted into the lock operation groove 49 with the contact with the peripheral edges of the inlets. Yes.

ロック部材４０の係止爪４０Ｄがロックガイド壁４３の先端４３ａに係止している状態では、図１４に示すように、ロック板部４０Ａの先端４０ｂが外周側シュー取付け部１０Ａのシュー取付け面１０ａより内方側（外周側シュー１３の被取付け面１３ａから離れる側）に配置されている。 In a state where the locking claw 40D of the lock member 40 is locked to the tip 43a of the lock guide wall 43, as shown in FIG. 14, the tip 40b of the lock plate portion 40A is the shoe mounting surface of the outer shoe mounting portion 10A. It is arranged on the inner side than 10a (the side away from the mounting surface 13a of the outer peripheral side shoe 13).

このロック板部４０Ａの先端４０ｂの配置構成により、ロック板部４０Ａの先端４０ｂが摩耗することを回避することができるとともに、外周側シュー１３の後述の摩耗状態確認用のゲージ凹部５８が摩耗によって開口した場合でも、ロック部材４０がロック解除されることを抑制することができる。 With the arrangement configuration of the tip 40b of the lock plate portion 40A, it is possible to avoid wear of the tip 40b of the lock plate portion 40A, and a later-described wear state confirmation gauge recess 58 of the outer peripheral shoe 13 is worn away. Even when it opens, it can suppress that the lock member 40 is unlocked.

ロックガイド壁４３の先端４３ａに係止しているロック部材４０の係止爪４０Ｄを弾性復元力に抗して係止解除操作する場合、内周側シュー取付け部１０Ｂの第１繋ぎ板部２８Ａに形成された窪み部４２の外周側外面とロック部材４０のロック頭部４０Ｂとの間に存在する若干のガタによる隙間にドライバー等の図外の係止解除操作具を差し入れて強制的に係止解除する。 When the locking claw 40D of the lock member 40 locked to the tip 43a of the lock guide wall 43 is unlocked against the elastic restoring force, the first connecting plate portion 28A of the inner periphery side shoe mounting portion 10B. Forcibly engaged by inserting an unlocking operation tool (not shown) such as a screwdriver into a gap caused by a slight play between the outer peripheral side outer surface of the recessed portion 42 and the lock head 40B of the lock member 40. Release the stop.

ロック部材４０のロック頭部４０Ｂには、外周側シュー取付け部１０Ａの内周側の窪み部４２に貫通形成された挿通孔４６を通して外周側シュー１３の被取付け面１３ａの二か所に一体形成されたロック突起４７の先端側の係合凹部４８に係合するロック片４０Ｅが一体形成されている。 The lock head 40B of the lock member 40 is integrally formed at two places on the mounting surface 13a of the outer shoe 13 through an insertion hole 46 formed through the inner recess 42 of the outer shoe mounting portion 10A. A locking piece 40E that engages with the engaging recess 48 on the distal end side of the locking projection 47 is integrally formed.

さらに、図５、図８、図１１、図１２に示すように、取付け基材１０の外周側シュー取付け部１０Ａと外周側シュー１３との相対向する部位、及び、取付け基材１０の内周側シュー取付け部１０Ｂと内周側シュー１５との相対向する部位には、所定装着位置にスライド嵌合操作された外周側シュー１３及び内周側シュー１５を仮止め状態で係合保持する仮止め係合手段Ｅが設けられている。 Furthermore, as shown in FIGS. 5, 8, 11, and 12, the opposing portions of the outer periphery side shoe attachment portion 10 A and the outer periphery side shoe 13 of the attachment base material 10, and the inner periphery of the attachment base material 10. Temporarily holding the outer shoe 13 and the inner shoe 15 that have been slidably fitted to a predetermined mounting position in a temporarily fixed state at the opposing portions of the side shoe mounting portion 10B and the inner shoe 15. Stop engaging means E is provided.

外周側の仮止め係合手段Ｅは、図１１、図１２に示すように、外周側シュー１３の被取付け面１３ａに、当該外周側シュー１３が所定装着位置にスライド嵌合操作されたとき、外周側シュー取付け部１０Ａの横側板部２２の内面に当接する突起状のストッパー５０と、外周側シュー取付け部１０Ａの両仕切り板部２４に連設された被係合部の一例である係合板部５１の先端に係合して、外周側シュー取付け部１０Ａに対する外周側シュー１３の嵌合離脱移動を阻止する係合爪（係合部の一例）５２とを一体形成して構成されている。 As shown in FIGS. 11 and 12, when the outer peripheral side shoe 13 is slide-fitted to a predetermined mounting position on the mounting surface 13 a of the outer peripheral side shoe 13 as shown in FIGS. A protruding stopper 50 that contacts the inner surface of the lateral side plate portion 22 of the outer shoe mounting portion 10A and an engagement plate that is an example of an engaged portion that is connected to both partition plates 24 of the outer shoe mounting portion 10A. An engaging claw (an example of an engaging portion) 52 that engages with the distal end of the portion 51 and prevents the outer shoe 13 from engaging and disengaging from the outer shoe mounting portion 10A is integrally formed. .

内周側の仮止め係合手段Ｅは、図５、図８に示すように、内周側シュー取付け部１０Ｂの第２繋ぎ板部２８Ｂの外面に、内周側シュー１５が所定装着位置にスライド嵌合操作されたとき、当該内周側シュー１５の先端に当接する突起状のストッパー５４が一体形成されているとともに、内周側シュー１５の被取付け面１５ａには、内周側シュー取付け部１０Ｂの両第２内側板部２７に形成された被係合部の一例である係合板部５５の先端に係合して、内周側シュー取付け部１０Ｂに対する内周側シュー１５の嵌合離脱移動を阻止する係合爪（係合部の一例）５６を一体形成して構成されている。 As shown in FIGS. 5 and 8, the inner peripheral side temporary fixing engaging means E is provided on the outer surface of the second connecting plate portion 28 B of the inner peripheral side shoe mounting portion 10 B, with the inner peripheral shoe 15 being in a predetermined mounting position. When a slide fitting operation is performed, a protruding stopper 54 that abuts on the tip of the inner peripheral shoe 15 is integrally formed, and the inner shoe mounting is provided on the mounting surface 15 a of the inner peripheral shoe 15. The inner peripheral shoe 15 is engaged with the inner peripheral shoe mounting portion 10B by engaging with the distal end of the engaging plate portion 55 which is an example of the engaged portion formed on both the second inner plate portions 27 of the portion 10B. An engaging claw (an example of an engaging portion) 56 that prevents separation movement is integrally formed.

また、外周側シュー１３の被取付け面１３ａ及び内周側シュー１５の被取付け面１５ａの各々には、ロック位置に装着されたロック部材４０のロック板部４０Ａの先端４０ｂが対面する状態で臨み、且つ、外周側シュー１３の摺接面１３ｂ及び内周側シュー１５の摺接面１５ｂがシュー交換の設定摩耗量に相当する一定量摩耗したとき開口する深さの摩耗状態確認用のゲージ凹部５８が形成されている。 Further, each of the mounted surface 13a of the outer shoe 13 and the mounted surface 15a of the inner shoe 15 faces the tip 40b of the lock plate portion 40A of the lock member 40 mounted at the lock position. In addition, a gauge recess for confirming the wear state with a depth that opens when the slidable contact surface 13b of the outer peripheral side shoe 13 and the slidable contact surface 15b of the inner peripheral side shoe 15 wear a certain amount corresponding to the set wear amount of shoe replacement. 58 is formed.

さらに、外周側シュー１３及び内周側シュー１５とロック部材４０とを互いに異なる色彩に構成してある。当該実施形態では、外周側シュー１３及び内周側シュー１５をそれぞれ黒色に設定し、ロック部材４０を白色に設定してある。 Furthermore, the outer peripheral side shoe 13 and the inner peripheral side shoe 15 and the lock member 40 are configured in different colors. In this embodiment, the outer peripheral side shoe 13 and the inner peripheral side shoe 15 are each set to black, and the lock member 40 is set to white.

そのため、外周側シュー１３の摺接面１３ｂ及び内周側シュー１５の摺接面１５ｂの摩耗に伴ってゲージ凹部５８の摺接面側が開口すると、その開口を通して外周側シュー１３及び内周側シュー１５の黒色とは異なる白色に構成されているロック部材４０を明確に視認することが可能となり、外周側シュー１３及び内周側シュー１５の交換時期を容易に目視確認することができる。 Therefore, when the sliding contact surface side of the gauge recess 58 opens due to wear of the sliding contact surface 13b of the outer peripheral shoe 13 and the sliding contact surface 15b of the inner peripheral shoe 15, the outer peripheral shoe 13 and the inner peripheral shoe pass through the opening. Thus, it is possible to clearly see the lock member 40 having a white color different from the 15 black color, and to easily visually check the replacement timing of the outer shoe 13 and the inner shoe 15.

尚、外周側シュー１３の被取付け面１３ａ及び内周側シュー１５の被取付け面１５ａの各々に形成されている一対の摩耗状態確認用のゲージ凹部５８は同一の深さに設定してもよいが、一対の摩耗状態確認用のゲージ凹部５８のうち、一方のゲージ凹部５８の深さを、シュー交換時期の設定摩耗量で開口する他方のゲージ凹部５８よりも深く構成してもよい。 The pair of gauge recesses 58 for confirming the wear state formed on each of the attached surface 13a of the outer peripheral shoe 13 and the attached surface 15a of the inner peripheral shoe 15 may be set to the same depth. However, of the pair of gauge recesses 58 for confirming the wear state, the depth of one gauge recess 58 may be configured deeper than the other gauge recess 58 opened at the set wear amount at the time of shoe replacement.

この場合、外周側シュー１３及び内周側シュー１５の摩耗状態が設定摩耗量に至る前に、一方の深い方のゲージ凹部５８が開口するから、あとどの位の期間で交換すべきなのかを予測することができる便利さがある。 In this case, before the wear state of the outer peripheral shoe 13 and the inner peripheral shoe 15 reaches the set wear amount, one of the deeper gauge recesses 58 is opened. There are conveniences that can be predicted.

〔第２実施形態〕
図１５は、内周側シュー取付け部１０Ｂ側に構成されるロック手段Ｄのロック構造の別実施形態を示し、内周側シュー取付け部１０Ｂの第２繋ぎ板部２８Ｂの内面に、ロック操作溝４１に設けられた一対のロックガイド壁４３に重合する状態で一対の補強璧４４を一体的に形成してある。 [Second Embodiment]
FIG. 15 shows another embodiment of the lock structure of the locking means D configured on the inner peripheral shoe mounting portion 10B side, and the lock operation groove is formed on the inner surface of the second connecting plate portion 28B of the inner peripheral shoe mounting portion 10B. A pair of reinforcing walls 44 are formed integrally with a pair of lock guide walls 43 provided on 41.

この一対の補強璧４４により一対のロックガイド壁４３を補強することができ、ロック構造を頑丈に構成することができる。 The pair of lock guide walls 43 can be reinforced by the pair of reinforcing walls 44, and the lock structure can be constructed firmly.

また、図示はしないが、外周側シュー取付け部１０Ａ側に構成されるロック手段Ｄのロック構造も、上述の内周側シュー取付け部１０Ｂ側のロック構造と同様に構成してある。 Although not shown, the locking structure of the locking means D configured on the outer shoe mounting portion 10A side is also configured in the same manner as the locking structure on the inner shoe mounting portion 10B described above.

尚、その他の構成は、第１実施形態で説明した構成と同一であるから、同一の構成箇所には、第１実施形態と同一の番号を付記してそれの説明は省略する。 In addition, since the other structure is the same as the structure demonstrated in 1st Embodiment, the same number is attached to the same structure location as 1st Embodiment, and the description is abbreviate | omitted.

〔その他の実施形態〕
（１）上述の実施形態では、嵌合手段Ｃを構成する嵌合部をアリ溝３２，３６に、被嵌合部をアリ突起３３，３７に構成したが、これとは逆に、嵌合部をアリ突起に、被嵌合部をアリ溝に構成してもよい。 [Other Embodiments]
(1) In the above-described embodiment, the fitting portion constituting the fitting means C is constituted by the dovetail grooves 32 and 36, and the fitted portion is constituted by the dovetail protrusions 33 and 37. The part may be configured as an ant protrusion, and the fitted part may be configured as an ant groove.

（２）上述の実施形態では、外周側シュー１３及び内周側シュー１５を、両取付け基材１０の外周側シュー取付け部１０Ａ及び内周側シュー取付け部１０Ｂに対するスライド嵌合操作時の向き姿勢が逆転するものの、同一形状に構成してシューの兼用化を図ったが、この外周側シュー１３及び内周側シュー１５を、取付け基材１０の外周側シュー取付け部１０Ａ及び内周側シュー取付け部１０Ｂにそれぞれ対応した異なる形状に構成してもよい。 (2) In the above-described embodiment, the orientation and orientation of the outer peripheral shoe 13 and the inner peripheral shoe 15 during the slide fitting operation with respect to the outer peripheral shoe mounting portion 10A and the inner peripheral shoe mounting portion 10B of both mounting base materials 10 are as follows. However, the outer peripheral shoe 13 and the inner peripheral shoe 15 are connected to the outer peripheral shoe mounting portion 10A and the inner peripheral shoe mounting portion of the mounting base material 10, respectively. You may comprise in the different shape corresponding to each part 10B.

（３）上述の実施形態では、一対の無端チェーン２に複数本のフライト１を横架したが、並設された三つ以上の無端チェーン２にわたって複数本のフライト１を横架してもよい。 (3) In the above-described embodiment, a plurality of flights 1 are horizontally mounted on a pair of endless chains 2. However, a plurality of flights 1 may be horizontally mounted over three or more endless chains 2 arranged side by side. .

（４）上述の実施形態では、外周側シュー１３及び内周側シュー１５を、取付け基材１０の外周側シュー取付け部１０Ａ及び内周側シュー取付け部１０Ｂに対してフライト１の長手方向からスライド嵌合自在に構成したが、循環移動経路Ｒに対して交差する上下方向からスライド嵌合自在に構成してもよい。 (4) In the above-described embodiment, the outer peripheral shoe 13 and the inner peripheral shoe 15 are slid from the longitudinal direction of the flight 1 with respect to the outer peripheral shoe mounting portion 10A and the inner peripheral shoe mounting portion 10B of the mounting base 10. Although it was configured to be freely fitted, it may be configured to be slidable from the up and down direction intersecting with the circulation movement path R.

（５）上述の実施形態では、ロック手段Ｄのロック部材４０を、スライド嵌合されている外周側シュー取付け部１０Ａと外周側シュー１３又は内周側シュー取付け部１０Ｂと内周側シュー１５とに亘る状態でスライド嵌合方向に対する交差方向から係合装着することにより、所定嵌合位置にある外周側シュー取付け部１０Ａと外周側シュー１３又は内周側シュー取付け部１０Ｂと内周側シュー１５との嵌合離脱移動を阻止するように構成したが、
ピンやボルト類等でスライド嵌合されている外周側シュー取付け部１０Ａと外周側シュー１３又は内周側シュー取付け部１０Ｂと内周側シュー１５とを固定連結してもよい。 (5) In the above-described embodiment, the locking member 40 of the locking means D includes the outer periphery side shoe attachment portion 10A and the outer periphery side shoe 13 or the inner periphery side shoe attachment portion 10B and the inner periphery side shoe 15 that are slide-fitted. The outer peripheral side shoe attachment portion 10A and the outer peripheral side shoe attachment portion 13 or the inner peripheral side shoe attachment portion 10B and the inner peripheral side shoe 15 at the predetermined fitting position are engaged and mounted from the crossing direction with respect to the slide fitting direction. Although it was configured to prevent mating and unmating movement with
The outer shoe mounting portion 10A and the outer shoe 13 or the inner shoe mounting portion 10B and the inner shoe 15 which are slidably fitted with pins or bolts may be fixedly connected.

（６）上述の実施形態では、外周側シュー１３の被取付け面１３ａ及び内周側シュー１５の被取付け面１５ａの各々に、ロック部材４０が臨む部位において摩耗状態を確認するためのゲージ凹部５８を形成したが、外周側シュー１３の被取付け面１３ａ及び内周側シュー１５の被取付け面１５ａの各々に、ロック部材４０が臨む部位において摺接面１３ｂ、１５ｂ側に開口する形態で摩耗状態を確認するためのゲージ孔を形成してもよい。 (6) In the above-described embodiment, the gauge recess 58 for checking the wear state at the part where the lock member 40 faces each of the mounted surface 13a of the outer peripheral shoe 13 and the mounted surface 15a of the inner peripheral shoe 15. However, in a state where the lock member 40 faces each of the attachment surface 13a of the outer peripheral side shoe 13 and the attachment surface 15a of the inner peripheral side shoe 15, it is opened in the sliding contact surfaces 13b and 15b side. You may form the gauge hole for confirming.

（７）上述の実施形態では、無端回動体として無端チェーン２を用いたが、無端ベルト等を用いてもよい。 (7) In the above-described embodiment, the endless chain 2 is used as the endless rotating body, but an endless belt or the like may be used.

Ｂ汚泥掻き寄せ機
Ｃ嵌合手段
Ｄロック手段
Ｒ循環移動経路
ＷＬ水面
１フライト
６底面
１２移動案内レール（底面側移動案内レール）
１３シュー（外周側シュー）
１３ｂ摺接面
１４移動案内レール（水面側移動案内レール）
１５シュー（内周側シュー）
１５ｂ摺接面
３２嵌合部（アリ溝）
３３被嵌合部（アリ突起）
３６嵌合部（アリ溝）
３７被嵌合部（アリ突起）
４０ロック部材
５１被係合部（係合板部）
５２係合部（係合爪）
５５被係合部（係合板部）
５６係合部（係合爪）
５８ゲージ凹部 B Sludge scraping machine C Fitting means D Lock means R Circulation movement path WL Water surface 1 Flight 6 Bottom surface 12 Movement guide rail (bottom side movement guide rail)
13 shoe (outer side shoe)
13b Sliding surface 14 Movement guide rail (water surface side movement guide rail)
15 shoe (inner side shoe)
15b Sliding surface 32 Fitting part (Dovetail groove)
33 Part to be fitted (ant protrusion)
36 Fitting (Dovetail)
37 mated part (ant protrusion)
40 Lock member 51 Engagement part (engagement plate part)
52 engaging part (engaging claw)
55 Part to be engaged (engagement plate part)
56 Engagement part (engagement claw)
58 gauge recess

Claims

A plurality of endless rotating bodies driven along a circulation movement path extending between the bottom surface side and the water surface side of the sludge treatment water area are horizontally laid with a plurality of flights that scrape sludge to a predetermined location along the bottom surface of the sludge treatment water area. ,
Each of the flights is a sludge scraper provided with a shoe that is in sliding contact with a movement guide rail disposed along the circulation movement path,
Fitting means that can be slidably fitted from the crossing direction with respect to the circulation movement path are provided at the opposing portions of the shoe and the shoe mounting portion of the flight, and this fitting means is fitted at a predetermined fitting position. Locking means for preventing the fitting and disengagement movement between the operated shoe and the flight shoe mounting portion is provided ,
Temporary engagement means for engaging and holding the shoe in the predetermined fitting position in a temporarily fixed state is provided,
A sludge scraper configured to fix the shoe by the lock unit after the shoe is temporarily fixed to the predetermined fitting position by the temporary fixing engagement unit.

The sludge scraper according to claim 1, wherein a slide fitting direction of the fitting means is set in a longitudinal direction of the flight.

The fitting means includes a fitting portion formed on the shoe and a fitted portion formed on a shoe mounting portion of the flight, and the locking means includes the fitting portion and the covered portion. A locking member that prevents fitting and disengagement movement between the fitting portion and the fitted portion at a predetermined fitting position by engaging and fitting from a direction intersecting the sliding fitting direction with the fitting portion. The sludge scraping machine according to claim 1 or 2, further comprising:

A plurality of endless rotating bodies driven along a circulation movement path extending between the bottom surface side and the water surface side of the sludge treatment water area are horizontally laid with a plurality of flights that scrape sludge to a predetermined location along the bottom surface of the sludge treatment water area. ,
Each of the flights is a sludge scraper provided with a shoe that is in sliding contact with a movement guide rail disposed along the circulation movement path,
Fitting means that can be slidably fitted from the crossing direction with respect to the circulation movement path are provided at the opposing portions of the shoe and the shoe mounting portion of the flight, and this fitting means is fitted at a predetermined fitting position. Locking means for preventing the fitting and disengagement movement between the operated shoe and the flight shoe mounting portion is provided,
The fitting means includes a fitting portion formed on the shoe and a fitted portion formed on a shoe mounting portion of the flight, and the locking means includes the fitting portion and the covered portion. A locking member that prevents fitting and disengagement movement between the fitting portion and the fitted portion at a predetermined fitting position by engaging and fitting from a direction intersecting the sliding fitting direction with the fitting portion. Is provided,
Together constituting a color different and said shoe and said locking member to each other, wherein the shoe, fouling the locking member that has a gauge recess or gauge holes for checking the state of wear of the sliding contact surface is formed in a portion facing the Mud scraper.

A plurality of endless rotating bodies driven along a circulation movement path extending between the bottom surface side and the water surface side of the sludge treatment water area are horizontally laid with a plurality of flights that scrape sludge to a predetermined location along the bottom surface of the sludge treatment water area. ,
In each of the flights, the shoe equipped in a sludge scraper provided with a shoe that is in sliding contact with a movement guide rail disposed along the circulation movement path,
A fitting portion that slide-fits from a crossing direction of the circulation movement path to a fitting portion formed in a shoe attachment portion of the flight, and the shoe attachment when the fitting portion is at a predetermined fitting position. An engagement portion that engages with the engaged portion of the portion and prevents the fitting portion and the fitted portion from moving out of engagement is formed, and the engaging portion is the fitting portion Is configured to temporarily hold and engage with the predetermined fitting position in a temporarily fixed state, and a lock member for fixing the fitting portion in the temporarily fixed state to the predetermined fitting position can be mounted. Constructed shoe for sludge scraper.