JP2009161930A - Covering structure for core drilled hole of concrete structure - Google Patents

Covering structure for core drilled hole of concrete structure Download PDF

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JP2009161930A
JP2009161930A JP2007339802A JP2007339802A JP2009161930A JP 2009161930 A JP2009161930 A JP 2009161930A JP 2007339802 A JP2007339802 A JP 2007339802A JP 2007339802 A JP2007339802 A JP 2007339802A JP 2009161930 A JP2009161930 A JP 2009161930A
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hole
core
bolt
slide guide
slide block
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JP5051580B2 (en
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Takashi Kaneko
隆 金子
Shinya Yoshimatsu
慎哉 吉松
Itsuo Eguchi
逸雄 江口
Takeshi Seki
武士 関
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PS Mitsubishi Construction Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a covering structure for a core drilled hole, which enables a cover to be easily attached to/detached from the core drilled hole of a concrete structure, and which prevents the cover from easily coming off when the cover is attached. <P>SOLUTION: A bolt for a locking operation is passed through a central portion of the cover in a turnable state by locking its head to the top surface side of the cover; a slide guide member is provided in the portion, inserted into the drilled hole, of the cover in a in the direction of extension thereof; and a slide block is engaged with the slide guide member in such a manner as to be movable only in its axial direction. A locking member capable of freely advancing/receding in the radial direction of the core drilled hole advances/recedes by a motional direction conversion mechanism which converting the motion of the slide block in the axial direction of the core drilled hole by the turning of the bolt to the advancing/receding motion of the locking member in the radial direction of the core drilled hole. The slide block is moved by performing the turning operation of the bolt, so that the locking member can be protruded in the radial direction of the core drilled hole and inserted into/extracted from an annular recessed groove which is provided on an inner peripheral surface in a position at a predetermined depth in the core drilled hole in such a manner as to be continuous in its circumferential direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、主として空港や道路の舗装板であるコンクリート構造体に開口させたコア削孔を、蓋体をもって閉鎖するコンクリート構造体のコア削孔施蓋構造に関する。   The present invention relates to a core hole covering structure for a concrete structure in which a core hole opened in a concrete structure which is a pavement board for airports and roads is closed with a lid.

一般に、軟弱な地盤の表面に道路や空港を建設した場合には、地盤の沈下によって地盤表面に不陸が生じることとなる。従来、このような地盤沈下による舗装面の不陸発生を予想し、地盤表面の舗装を、コンクリート舗装板を使用して施工しておき、不均一な地盤沈下によって舗装面に不陸が生じた際に、沈下した部分のコンクリート舗装板を持ち上げ、基礎地盤との間に流動性のあるモルタルなどの充填材を充填することによってこれを補修する方法が実施されている（例えば特許文献１）。   In general, when a road or an airport is constructed on the surface of soft ground, the ground surface becomes uneven due to the settlement of the ground. Previously, it was predicted that the pavement would not land due to such ground subsidence, and the pavement on the ground surface had been constructed using concrete pavement, and the pavement was uneven due to uneven ground subsidence. At the time, a method of repairing the concrete pavement board by sinking the concrete pavement board and filling it with a filling material such as fluid mortar between the foundation ground and the like has been implemented (for example, Patent Document 1).

このような不陸補修方法を実施するに際しては、コンクリート舗装板に多数のコア削孔による作業穴を形成し、舗装板下にジャッキの反力を受けるための反力受台を造成し、しかる後、各作業穴に扛上用のジャッキを装着し、所定の範囲に装着した多数のジャッキを同時に作動させて扛上作業を行い、扛上によって出来た舗装板下の空隙を埋めるための裏込めモルタルを、別に形成した作業穴から充填するものである。   When implementing such an uneven repair method, work holes are formed in the concrete pavement plate by a number of core drillings, and a reaction force receiving base for receiving the reaction force of the jack is created under the pavement plate. After that, the jacks for uplifting are installed in each work hole, and the jacking work is performed by simultaneously operating a number of jacks installed in a predetermined range, and the back of the pavement board created by the uplifting is filled Filling mortar is filled from a separately formed working hole.

また、この不陸補修作業は、既存の舗装板に亀裂を生じさせないように実施する必要があるため、広範に亘って同時に扛上作業を行う必要があり、作業穴のコア削孔作業開始から、裏込めモルタル充填作業完了までに数日、場合によっては数十日を要する。また、作業は、主として夜間に行われ、昼間は通常の使用に供されているため、コア削孔による作業穴は、昼間の路面使用時には閉鎖しておく必要がある。
このため従来は図７に示すように、コンクリート舗装板１に形成したコア削孔２を閉鎖すべく、円筒状の削孔内挿入部３ａの端部外周にフランジ３ｂを一体に備えた蓋体３を使用している。
特開平６−３３０５０６号公報 In addition, since it is necessary to carry out this unevenness repair work so as not to cause cracks in the existing pavement board, it is necessary to carry out the dredging work over a wide range at the same time. It takes several days, sometimes tens of days, to complete the backfill mortar filling operation. Further, since the work is mainly performed at night and is used for normal use in the daytime, the work hole by the core drilling needs to be closed when the road surface is used in the daytime.
Therefore, conventionally, as shown in FIG. 7, a lid body integrally provided with a flange 3b on the outer periphery of the end of the cylindrical insertion portion 3a in order to close the core hole 2 formed in the concrete pavement plate 1. 3 is used.
JP-A-6-330506

上述した従来の蓋体を使用したコア削孔施蓋構造では、削孔作業後に降雨があると舗装板下に水が溜り、舗装面上を車両や航空機が走行すると、その重量によって舗装板が押し下げられた際に、溜まっている水が噴き上げられることがある。この時の水圧によって、蓋体が噴き上げられて削孔から脱落し、事故の原因となるという問題があった。   In the core drilling lid structure using the conventional lid described above, if rain occurs after drilling work, water accumulates under the pavement plate, and when the vehicle or aircraft travels on the pavement surface, the pavement plate is When pushed down, the accumulated water may be spouted up. Due to the water pressure at this time, there was a problem that the lid body spouted and dropped out of the hole, causing an accident.

このような蓋体脱落の危険性を回避するためには、削孔内から容易に抜け出ない施蓋構造が必要であるが、蓋体は、次の作業時には取り外す必要があり、しかもその数が多いため、着脱作業が容易である必要がある。   In order to avoid such a risk of the lid falling off, a lid structure that does not easily come out from the drilling hole is required. However, the lid must be removed in the next work, and the number of lids must be removed. Since there are many, attachment / detachment work needs to be easy.

本発明は、このような従来の問題に鑑み、舗装板の扛上作業のためのコア削孔等のようなコンクリート構造体におけるコア削孔に対する蓋体の着脱が容易に行われ、装着時には容易に外れることの無いコア削孔施蓋構造の提供を目的としてなされたものである。   In view of such conventional problems, the present invention facilitates attachment / detachment of a lid to / from a core drilling hole in a concrete structure such as a core drilling hole for pavement boarding work. It was made for the purpose of providing a core hole covering structure that does not come off.

上述の如き従来の問題を解決し、所期の目的を達成するための請求項１に記載する発明の特徴は、コンクリート構造体に形成されたコア削孔内に挿入される削孔内挿入部と、該削孔内挿入部の上端に一体に備えられ、前記中上部コア削孔開口部周縁に当接するフランジとを一体に有する蓋体を備え、前記削孔内挿入部をコア削孔内に挿入して該コア削孔開口部を閉鎖するコンクリート構造体のコア削孔施蓋構造において、
前記コア削孔内の所定深さ位置の内周面にその周方向に連続した環状の凹溝を備え、前記蓋体の中心部分にロック操作用のボルトを、その頭部を蓋体上面側に係止させて回動可能な状態に貫通させ、前記蓋体の削孔内挿入部にその延長方向に向けてスライドガイド部材を備え、該スライドガイド部材に対しその軸方向にのみ移動可能にスライドブロックを係合させ、該スライドブロックを前記ボルトの先端部に螺嵌させ、
該スライドブロックには、コア削孔半径方向に出入自在な係止部材と、前記ボルトの回転によるスライドブロックのコア削孔軸方向の動作を前記係止部材のコア削孔半径方向の出入動作に変換する動作方向変換機構とを備え、
前記ボルトを回動操作してスライドブロックを移動させることによって前記係止部材がコア削孔半径方向に突出して前記係止用凹溝に挿抜されるようにしたことにある。 In order to solve the conventional problems as described above and achieve the intended object, the feature of the invention described in claim 1 is that the insertion part in the drilling hole is inserted into the core drilling hole formed in the concrete structure. And a lid that is integrally provided at the upper end of the insert portion in the drilling hole, and a flange that is in contact with the peripheral edge of the opening portion of the middle upper core drilling hole. In the core hole covering structure of the concrete structure that is inserted into the core hole and closes the core hole opening,
The inner peripheral surface of the core drilling hole at a predetermined depth is provided with an annular concave groove that is continuous in the circumferential direction, and a locking bolt is provided at the center of the lid, and the head is on the lid upper surface side. The slide guide member has a slide guide member extending in the extending direction at the insertion portion in the drilling hole of the lid, and is movable only in the axial direction with respect to the slide guide member. Engage the slide block, screw the slide block to the tip of the bolt,
The slide block has a locking member that can be moved in and out in the core drilling radial direction, and the movement of the sliding block in the core drilling axis direction by the rotation of the bolt is changed to the movement of the locking member in the core drilling radial direction. An operation direction conversion mechanism for converting,
By rotating the bolt to move the slide block, the locking member protrudes in the radial direction of the core drilling hole and is inserted into and removed from the locking groove.

また、請求項２に記載の発明の特徴は、請求項１の構成に加え、前記スライドガイド部材は前記コア削孔の内周面に沿って挿入される筒状をなし、該筒状のスライドガイド部材内に、該部材に対して軸方向にのみ移動可能にスライドブロックを収容し、前記係止部材は、一端側が前記スライドブロックに該ブロックの移動方向と直行する向きの回動中心軸によって枢支された回動アームをもって構成され、
前記ボルトを回転させてスライドガイドを移動させることにより前記回動アームの先端が前記筒状のスライドガイドに開けた窓を通して前記係止用凹溝に係合されるようにしたことにある。 According to a second aspect of the present invention, in addition to the configuration of the first aspect, the slide guide member has a cylindrical shape inserted along the inner peripheral surface of the core drilling hole, and the cylindrical slide A slide block is accommodated in the guide member so as to be movable only in the axial direction with respect to the member, and the locking member has a rotation center shaft whose one end is perpendicular to the movement direction of the block. Consists of pivoting pivot arms,
By rotating the bolt and moving the slide guide, the tip of the rotating arm is engaged with the locking concave groove through a window opened in the cylindrical slide guide.

更に、請求項３に記載の発明の特徴は、請求項１の構成に加え、前記係止部材は、板バネ状材からなり、中央部分から両端側に、互いに対称な傾斜部を有し、前記スライドガイド部材は、前記操作用のボルトが挿入される鞘管をもって構成され、該鞘管の先端に前記板バネ状材の中央が固定され、前記スライドブロックは、前記板バネ状材の両傾斜部の間に挿入されており、
前記ボルトを回転させてスライドガイドを移動させることにより前記両傾斜部がスライドガイドに押されることによって板バネ状材の両端側が弾性的に変形されてコア削孔半径方向に突出して前記係止用凹溝に係合されるようにしたことにある。 Further, the invention according to claim 3 is characterized in that, in addition to the structure of claim 1, the locking member is made of a leaf spring-like material, and has inclined portions symmetrical to each other from the central portion to both ends. The slide guide member includes a sheath tube into which the operation bolt is inserted, and a center of the leaf spring-like material is fixed to a distal end of the sheath tube, and the slide block includes both of the leaf spring-like materials. Inserted between the slopes,
By rotating the bolt and moving the slide guide, both the inclined portions are pushed by the slide guide, so that both end sides of the leaf spring-like material are elastically deformed and project in the radial direction of the core drilling hole. This is because it is engaged with the concave groove.

本発明においては、蓋体の中心部分にロック操作用のボルトを、その頭部を蓋体上面側に係止させて回動可能な状態に貫通させるとともに、蓋体の削孔内挿入部にその延長方向に向けてスライドガイド部材を備え、そのスライドガイド部材に対しその軸方向にのみ移動可能にスライドブロックを係合させ、前記ボルトの回転によるスライドブロックのコア削孔軸方向の動作を前記係止部材のコア削孔半径方向の出入動作に変換する動作方向変換機構によってコア削孔半径方向に出入自在な係止部材を出入させるようにし、前記ボルトを回動操作してスライドブロックを移動させることによって前記係止部材がコア削孔半径方向に突出し、コア削孔内の所定深さ位置の内周面にその周方向に連続した環状の凹溝に挿抜されるようにしたことにより、施蓋の際の脱落防止は、蓋体側の係止部材がコア削孔の凹溝に挿抜されることによって確実になされ、しかも蓋体外からボルトを回転操作することによって蓋体の外れ止め、及びその解除の作業ができることとなり、簡単な作業で蓋体のロック及びその解除可能となる。   In the present invention, a bolt for locking operation is inserted into the center portion of the lid body so that its head is locked to the upper surface side of the lid body so as to be pivotable, and at the insertion portion in the drilling hole of the lid body. A slide guide member is provided in the extending direction, and the slide block is engaged with the slide guide member so as to be movable only in the axial direction. The locking member that can be freely moved in and out of the core drilling radial direction is moved in and out by the movement direction changing mechanism that converts the locking member into the radial movement of the core drilling hole, and the slide block is moved by rotating the bolt. The locking member protrudes in the radial direction of the core drilling hole, and is inserted into and extracted from the inner circumferential surface of the core drilling hole at a predetermined depth position in an annular groove that is continuous in the circumferential direction. The prevention of falling off when applying the lid is ensured by inserting and removing the locking member on the lid side into the concave groove of the core drilling hole, and the lid body is prevented from coming off by rotating the bolt from outside the lid body. In addition, the lid can be unlocked and the lid can be locked and released with a simple operation.

また、前記スライドガイド部材は前記コア削孔の内周面に沿って挿入される筒状をなし、該筒状のスライドガイド部材内に、該部材に対して軸方向にのみ移動可能にスライドブロックを収容し、前記係止部材を、一端側が前記スライドブロックに該ブロックの移動方向と直行する向きの回動中心軸によって枢支された回動アームをもって構成し、前記ボルトを回転させてスライドガイドを移動させることにより前記回動アームの先端が前記筒状のスライドガイドに開けた窓を通して前記係止用凹溝に係合されるようにすることにより、簡単な構造で的確な蓋体脱落防止及びその解除をなし得る。   Further, the slide guide member has a cylindrical shape inserted along the inner peripheral surface of the core drilling hole, and the slide block is movable in the cylindrical slide guide member only in the axial direction with respect to the member. The locking member is configured to have a rotating arm pivotally supported at one end side by a rotating central axis in a direction perpendicular to the moving direction of the block, and the bolt is rotated to slide guide By moving the tip, the tip of the pivot arm is engaged with the locking groove through a window opened in the cylindrical slide guide, thereby preventing the lid from falling off with a simple structure. And release it.

更に、前記係止部材は、板バネ状材からなり、中央部分から両端側に、互いに対称な傾斜部を有し、前記スライドガイド部材は、前記操作用のボルトが挿入される鞘管をもって構成し、該鞘管の先端に前記板バネ状材の中央が固定され、前記スライドブロックは、前記板バネ状材の両傾斜部の間に挿入させ、前記ボルトを回転させてスライドガイドを移動させることにより前記両傾斜部がスライドガイドに押されることによって、板バネ状材の両端側が弾性的に変形されてコア削孔半径方向に突出して前記係止用凹溝に係合されるようにすることにより、より簡単な構造で的確な蓋体脱落防止及びその解除をなし得る。また、板バネ状材の弾性によって蓋体をコア削孔内側に附勢することができ、ロック状態の緩み止めが効果的になされる。   Further, the locking member is made of a leaf spring-like material, has inclined portions symmetrical to each other from the center portion to both ends, and the slide guide member has a sheath tube into which the operation bolt is inserted. The center of the leaf spring-like material is fixed to the end of the sheath tube, and the slide block is inserted between both inclined portions of the leaf spring-like material, and the bolt is rotated to move the slide guide. As a result, the both inclined portions are pushed by the slide guide, whereby both end sides of the leaf spring-like material are elastically deformed so as to protrude in the radial direction of the core drilling hole and engage with the locking groove. As a result, the lid can be prevented from falling off and released more accurately with a simpler structure. Further, the lid body can be urged to the inside of the core drilling hole by the elasticity of the leaf spring-like material, and the locking state is effectively prevented from being loosened.

次に本発明の好適な実施形態を図面に基づいて具体的に説明する。   Next, preferred embodiments of the present invention will be specifically described with reference to the drawings.

図１〜図４は本発明の第一実施例を示しており、図において符号１０は、コンクリート床板等のコンクリート構造体であり、１１はこれに形成したコア削孔、１２は本発明に係る施蓋構造に使用している蓋体である。この蓋体１２は、コア削孔１１内に挿入される円柱状の削孔内挿入部１２ａと、該削孔内挿入部１２ａの上端周縁に一体成型されたフランジ１２ｂとから構成されており、削孔内挿入部１２ａをコア削孔１１内に挿入し、フランジ１２ｂをコア削孔開口部周縁に当接させることによってコア削孔１１を閉鎖するようにしている。   1 to 4 show a first embodiment of the present invention, in which reference numeral 10 is a concrete structure such as a concrete floor board, 11 is a core drilling hole formed in this, and 12 is according to the present invention. It is a lid used for the lid structure. The lid body 12 is composed of a columnar in-hole insertion portion 12a to be inserted into the core bore 11, and a flange 12b integrally formed at the upper edge of the in-hole insertion portion 12a. The core drilling hole 11 is closed by inserting the hole drilling insertion portion 12a into the core drilling hole 11 and bringing the flange 12b into contact with the periphery of the core drilling hole opening.

蓋体１２は、コア削孔１１に対しロック機構１３を介して抜け止めされるようになっている。このロック機構１３は、蓋体１２の削孔内挿入部１２ａの外周に固定した円筒状のスライドガイド１４、該スライドガイド１４の下端部内、即ち先端部内に上記円筒状の軸方向、即ち上下方向に移動可能に収容したスライドブロック１５、該スライドブロック１５に取り付けた係止部材１６、蓋体１２の中央部分に縦方向に貫通して垂下、即ちスライドガイド１５内側に挿入されたロック及びロック解除操作用のボルト１７を有している。   The lid body 12 is prevented from being detached from the core hole 11 via a lock mechanism 13. The locking mechanism 13 includes a cylindrical slide guide 14 fixed to the outer periphery of the in-bore insertion portion 12a of the lid 12, and the cylindrical axial direction, that is, the vertical direction, in the lower end portion of the slide guide 14, that is, in the distal end portion. Slide block 15 movably accommodated, locking member 16 attached to the slide block 15, penetrating vertically through the central portion of the lid 12, that is, locking and unlocking inserted inside the slide guide 15 A bolt 17 for operation is provided.

スライドガイド１４は、コア削孔１１の内面に沿って容易に挿抜できる大きさに形成されており、円筒状の周壁には係止部材１６が出入できる窓穴２０が備えられている。また、スライドガイド１４の内週面には軸方向に向けたキー２１が突設されている。   The slide guide 14 is formed in a size that can be easily inserted and removed along the inner surface of the core drilling hole 11, and the cylindrical peripheral wall is provided with a window hole 20 through which the locking member 16 can enter and exit. Further, an axially oriented key 21 projects from the inner week surface of the slide guide 14.

スライドブロック１５には、外周面に前記キー２１が嵌り合うキー溝２２が形成され、両者が嵌り合うことによって、スライドブロック１５はスライドガイド１４に対し周方向に旋回不能で、軸方向に移動可能となっている。   The slide block 15 is formed with a key groove 22 in which the key 21 fits on the outer peripheral surface, and the slide block 15 cannot move in the circumferential direction with respect to the slide guide 14 and can move in the axial direction. It has become.

このスライドブロック１５には、その中央部分にねじ穴２３が形成され、これにボルト１７の下端部分が螺嵌されており、ボルト１７を回転させることによってスライドブロック１５が上下に移動されるようになっている。   The slide block 15 has a screw hole 23 formed at the center thereof, and a lower end portion of the bolt 17 is screwed into the screw hole 23. By rotating the bolt 17, the slide block 15 is moved up and down. It has become.

ボルト１７は、その頭部１７ａが蓋体１２の頂面に形成した凹陥部２５内に収容されていて、ボルト１７の頂面は蓋体１２の頂面から突出しないようなっている。凹陥部２５の中央に、ネジ山の無いボルト挿通穴２６が形成され、その内部にボルト１７が軸方向に回転且つ移動可能に挿通されている。   The bolt 17 is housed in a recessed portion 25 whose head 17 a is formed on the top surface of the lid body 12, and the top surface of the bolt 17 does not protrude from the top surface of the lid body 12. A bolt insertion hole 26 without a thread is formed in the center of the recessed portion 25, and a bolt 17 is inserted therein so as to be rotatable and movable in the axial direction.

また、ボルト１７の頭部１７ａと凹陥部２５の底面との間には、コイルスプリング２７が嵌装され、頭部１７ａを蓋体頂面側に附勢している。このスプリング２７は、後述するロック状態時の緩み止め作用を受け持たせるものである。   A coil spring 27 is fitted between the head portion 17a of the bolt 17 and the bottom surface of the recessed portion 25 to urge the head portion 17a toward the top surface of the lid. The spring 27 is provided with a locking action in a locked state, which will be described later.

係止部材１６は、スライドブロック１５の上面に先端側が水平方向から上側、即ちコア削孔半径方向からコア削孔開口部側に回動可能に枢支されている。この係止部材１６平面がＵ字状をしており、そのＵ字状の平行な両端（係止部材の基端部）が枢支片部１６ａ，１６ａとなり、これがスライドブロック１５の上面の突部１５ａを挟み、この突部１５ａと枢支片部１６ａ，１６ａに、スライドブロックの移動方向と直交する向きの枢軸３０を貫通させ、これによって係止部材１６の先端１６ｂ、即ち前記Ｕ字状の屈曲部側が水平方向から上向き側に回動されるようになっている。   The locking member 16 is pivotally supported on the upper surface of the slide block 15 so that the tip side is rotatable from the horizontal direction to the upper side, that is, from the core hole radial direction to the core hole opening side. The flat surface of the locking member 16 is U-shaped, and both U-shaped parallel ends (base ends of the locking member) serve as pivotal support pieces 16a and 16a. The pivot 15 having a direction perpendicular to the moving direction of the slide block is passed through the protrusion 15a and the pivot support pieces 16a, 16a with the portion 15a interposed therebetween, whereby the tip 16b of the locking member 16, that is, the U-shape. The bent portion side is rotated from the horizontal direction to the upward side.

係止部材１６の先端１６ｂは、スライドガイド１４の窓穴２０から該スライドガイドの半径方向に突出されるようになっており、係止部材１６が水平方向、即ちスライドブロック半径方向に向いた時に、該係止部材１６は窓穴２０の下側縁部２０ａより上側にあるように構成されており、スライドブロック１５をスライドガイドの下端側に移動させることによって、係止部材１６は、その下面が窓穴２０の下側縁部２０ａに当たって上向きに回動され、その先端１６ｂはスライドガイド１４の外周面より内側に引き込まれるようになっている。   The distal end 16b of the locking member 16 protrudes from the window hole 20 of the slide guide 14 in the radial direction of the slide guide. When the locking member 16 faces in the horizontal direction, that is, in the slide block radial direction. The locking member 16 is configured to be above the lower edge 20a of the window hole 20, and by moving the slide block 15 to the lower end side of the slide guide, the locking member 16 Is turned upward by hitting the lower edge portion 20a of the window hole 20, and its tip 16b is drawn inward from the outer peripheral surface of the slide guide 14.

尚、係止部材１６の突出方向の動作は、この実施例では下向きのコア削孔に対して実施しているため自重によってなされるようになっているが、水平方向又は上向きのコア削孔に対して実施する場合には、スライドブロック１５を上昇、即ちコア削孔開口部側に移動させることによって、窓穴の上側縁部２０ｂによって係止部材１６の先端が突出側に押され、突出方向に強制的に回動されるようにしてもよい。   In addition, since the operation of the locking member 16 in the protruding direction is performed with respect to the downward core drilling in this embodiment, it is performed by its own weight, but the horizontal or upward core drilling is performed. When it is carried out, the slide block 15 is moved upward, that is, moved to the core hole opening side, whereby the tip of the locking member 16 is pushed to the protruding side by the upper edge 20b of the window hole, and the protruding direction It may be forcibly rotated.

コア削孔１１の内周面には、その円周方向に向けて環状の凹溝３５が形成されており、前述した係止部材１６が、ボルト１７の操作によってスライドガイド１４を移動させることによって略水平の向きになる位置において、該係止部材１６の先端１６ｂが凹溝３５内に嵌り合うように構成されている。   An annular groove 35 is formed on the inner peripheral surface of the core drilling hole 11 in the circumferential direction, and the locking member 16 described above moves the slide guide 14 by operating the bolt 17. The front end 16 b of the locking member 16 is configured to fit into the concave groove 35 at a position that is substantially horizontal.

尚、この凹溝３５は、図４に示すように先端に突出させた回転軸４０に円形のコンクリートカッター４１を取り付けた回転切削冶具４２を使用し、この冶具４２の中間高さ位置に半球状突部４３を固定しておくとともに、この突部４３が嵌り合う球面座４４をコア削孔１１の開口部に嵌め合わせ、該球面座４４に突部４３を嵌め合わせて冶具４２を旋回させることによりコンクリートカッター４１によって切削形成することができる。   As shown in FIG. 4, the concave groove 35 uses a rotary cutting jig 42 in which a circular concrete cutter 41 is attached to a rotary shaft 40 protruded from the tip, and a hemispherical shape is provided at an intermediate height position of the jig 42. The projection 43 is fixed, and the spherical seat 44 to which the projection 43 is fitted is fitted into the opening of the core drilling hole 11, and the projection 43 is fitted to the spherical seat 44 and the jig 42 is turned. Thus, it can be cut by the concrete cutter 41.

以上のように、このコンクリート構造体のコア削孔施蓋構造では、ボルト１７を回転操作し、スライドブロック１５を上昇方向、即ち引き出し方向に動作させることによって、係止部材１６が半径方向に回動してその先端が窓２０から突出し、削孔内面の凹溝３５に嵌り合い、蓋体１２を外れ止めしたロック状態となり、この状態からスライドブロック１５降下方向、即ち押し込み方向に動作させることにより、係止部材１６が傾斜される方向に回動し、先端が凹溝３５から引き抜かれる方向に動作し、前記ロック状態が解除され、蓋体１２が取り外し自由な状態となる。   As described above, in the core hole covering structure of the concrete structure, the locking member 16 rotates in the radial direction by rotating the bolt 17 and moving the slide block 15 in the upward direction, that is, in the pulling direction. By moving, the tip protrudes from the window 20, fits into the concave groove 35 on the inner surface of the drilling hole, and the lid body 12 is prevented from coming off. From this state, the slide block 15 is moved downward, that is, pushed in. The locking member 16 is rotated in the inclined direction, the tip is moved in the direction of being pulled out from the concave groove 35, the locked state is released, and the lid body 12 becomes free to be removed.

次に、本発明の第二実施例を図５、図６について説明する。尚、第一実施例と同じ部分には同じ符号を付して重複説明を省略する。   Next, a second embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same part as 1st Example, and duplication description is abbreviate | omitted.

この実施例における蓋体１２をコア削孔１１から外れ止めするロック機構５０は、図に示すように、蓋体１２の背面中央にそのボルト挿通穴２６を延長させる配置に鞘管からなるスライドガイド５１と、該スライドガイド５１と蓋体１２を貫通させたボルト５２、ボルト５２の先端部に螺嵌したスライドブロック５３、スライドガイド５１の下端、即ちコア削孔奥側端部に固定した係止部材である板バネ状材５４とから構成されている。   In this embodiment, the lock mechanism 50 for preventing the lid 12 from coming off from the core hole 11 is, as shown in the figure, a slide guide comprising a sheath tube in an arrangement in which the bolt insertion hole 26 is extended at the center of the back surface of the lid 12. 51, a bolt 52 penetrating the slide guide 51 and the lid 12, a slide block 53 screwed into the tip of the bolt 52, and a latch fixed to the lower end of the slide guide 51, that is, the core drilling hole deeper end. It is comprised from the leaf | plate spring-shaped material 54 which is a member.

板バネ状材板５４は、その中央の表面側を鞘管であるスライドガイド５１の下端に一体化させており、ボルト挿通孔２６と連続した孔が開口され、ボルト５２の先端は板バネ状材５４を貫通してコア削孔奥側に突出し、その先端部がスライドブロック５３貫通開口させたねじ穴５３ｂに螺合されている。この板バネ状材５４は、その中央より両端側が、コア削孔奥側に曲げられた傾斜部５４ａ，５４ａとなっており、全体として中央部分をコア削孔開口部側に突出させた山形に形成されている。この両傾斜部５４ａ，５４ａ間、即ち山形の内側にスライドブロック５３が挿入されている。   The plate spring-like material plate 54 has its center surface side integrated with the lower end of the slide guide 51 which is a sheath tube, a hole continuous with the bolt insertion hole 26 is opened, and the tip of the bolt 52 has a plate spring shape. It penetrates the material 54 and protrudes to the inner side of the core drilling hole, and its tip is screwed into a screw hole 53b opened through the slide block 53. The leaf spring-like material 54 has inclined portions 54a and 54a that are bent toward the core drilling hole deeper at both ends from the center, and as a whole, the central part protrudes toward the core drilling opening side. Is formed. A slide block 53 is inserted between the inclined portions 54a, 54a, that is, inside the mountain.

スライドブロック５３にはその表面に前記傾斜部５４ａ，５４ａが嵌り合う凹溝５３ａが形成され、その凹溝５３ａ内に板バネ状材５４の両傾斜部５４ａ，５４ａが嵌り込んで、スライドブロック５３と板バネ状材５４とが相対的に回り止めされている。これによって、スライドブロック５３は、蓋体１２に対して旋回不能な状態となっている。   A concave groove 53a is formed on the surface of the slide block 53 so that the inclined portions 54a and 54a are fitted into the slide block 53, and both inclined portions 54a and 54a of the leaf spring-like material 54 are fitted into the concave groove 53a. And the leaf spring-like material 54 are relatively prevented from rotating. As a result, the slide block 53 is in a state in which it cannot pivot with respect to the lid body 12.

このため、スライドブロック５３は、ボルト５２の旋回操作によってその軸方向に移動されることとなり、板バネ状材５４側に移動させることによって、両傾斜部５４ａ，５４ａ間を押し広げ、これによって板バネ状材５４の両端が斜め上側に移動してコア削孔半径方向に突出され、この状態から元の状態、即ち板バネ状材５４から離れる側に移動させることによって、傾斜部５４ａ，５４ａは自らの弾性によって元の形状、即ち両端が引き込まれた状態に戻るようになっている。   For this reason, the slide block 53 is moved in the axial direction by the turning operation of the bolt 52. By moving the slide block 53 toward the leaf spring-like material 54 side, the space between the inclined portions 54a and 54a is expanded. Both ends of the spring-like material 54 move obliquely upward and project in the core drilling radial direction. By moving from this state to the original state, that is, away from the leaf spring-like material 54, the inclined portions 54a and 54a are It returns to its original shape, that is, the state in which both ends are drawn, by its own elasticity.

また、板バネ状材５４は、その両端が前述した半径方向中心側に戻っている状態で、その両端間の長さがコア削孔１１の直径よりやや短く形成されており、スライドブロック５３がコア削孔開口側に移動されることによって大きくなった両端間の長さがコア削孔１１の直径より大きくなるように傾斜部の角度が選定されている。   Further, the leaf spring-like material 54 is formed such that the length between both ends thereof is slightly shorter than the diameter of the core drilling hole 11 in a state where both ends thereof are returned to the above-described radial direction center side. The angle of the inclined portion is selected so that the length between both ends which is increased by moving to the core drilling hole opening side becomes larger than the diameter of the core drilling hole 11.

コア削孔１１の内周面の、係止部材係止用の凹溝３５は、前述した板バネ状材５４の両端に対応する位置に形成されており、板バネ状材５４の両端が拡開する方向に動作されることによって、その先端が凹溝３５内に挿入され、更に拡開されることによって先端が凹溝３５のコア削孔開口部側の縁部に当接し、自らの弾性によって蓋体１２を引き込み方向に附勢する。   The groove 35 for locking the locking member on the inner peripheral surface of the core hole 11 is formed at a position corresponding to both ends of the leaf spring-like material 54 described above, and both ends of the leaf spring-like material 54 are expanded. By operating in the opening direction, the tip is inserted into the groove 35, and further expanded, the tip contacts the edge of the groove 35 on the side of the core hole opening, and its own elasticity. Thus, the lid body 12 is urged in the retracting direction.

このロック機構の使用に際しては、板バネ状材５４の両端間長さが最も短くなる位置、即ち、スライドブロック５３で弾性変形させる直前の状態に該スライドブロック５３を位置させておき、この状態でコア削孔１１内に挿入して蓋体１２のフランジ１２ｂを削孔開口縁部に当接させる。しかる後、ボルト５２を旋回操作し、スライドブロック５３をコア削孔開口部側に移動させる。これによって板バネ状材５４の傾斜部５４ａ，５４ａがコア削孔開口側に曲げられ、その先端が半径方向に突出され、凹溝３５に係止されて蓋体１２を外れ止めしたロック状態となる。   When the lock mechanism is used, the slide block 53 is positioned at the position where the length between both ends of the leaf spring-like material 54 is the shortest, that is, the state immediately before elastically deforming the slide block 53. It inserts in the core drilling hole 11, and the flange 12b of the lid 12 is brought into contact with the edge of the drilling hole opening. Thereafter, the bolt 52 is turned, and the slide block 53 is moved to the core hole opening side. As a result, the inclined portions 54a, 54a of the leaf spring-like material 54 are bent toward the core drilling hole opening side, the tips thereof protrude in the radial direction, and are locked in the concave grooves 35 to prevent the lid body 12 from coming off. Become.

蓋体１２のロック解除は、ボルト５２を逆に旋回させてスライドブロック５３をコア削孔奥側に移動させることによって、板バネ状材５４は、その先端間の長さがコア削孔１１の直径より小さい元の形状に戻り、両端が凹溝３５から外れ、蓋体１２取出しが可能なロック解除状態となる。   The lid 12 is unlocked by turning the bolt 52 in the reverse direction and moving the slide block 53 to the inner side of the core drilling hole. Returning to the original shape smaller than the diameter, both ends are detached from the concave groove 35, and the unlocked state in which the lid 12 can be taken out is obtained.

本発明に係るコア削孔施蓋構造の第一実施例の蓋体ロック状態を示す縦断面図である。It is a longitudinal cross-sectional view which shows the cover body locked state of the 1st Example of the core hole covering structure which concerns on this invention. 同上の蓋体ロック解除状態を示す縦断面図である。It is a longitudinal cross-sectional view which shows a cover body unlocking state same as the above. 同上のコア削孔施蓋構造を構成する部材の分解斜視図である。It is a disassembled perspective view of the member which comprises a core hole covering structure same as the above. コア削孔内面に凹溝を形成する工程の一例を示す断面図である。It is sectional drawing which shows an example of the process of forming a ditch | groove in a core drilling hole inner surface. 本発明に係るコア削孔施蓋構造の第二実施例を示す縦断面図である。It is a longitudinal cross-sectional view which shows the 2nd Example of the core hole covering structure which concerns on this invention. 同上のコア削孔施蓋構造を構成する部材の分解斜視図である。It is a disassembled perspective view of the member which comprises a core hole covering structure same as the above. 従来のコア削孔施蓋構造の一例を示す断面図である。It is sectional drawing which shows an example of the conventional core hole covering structure.

符号の説明Explanation of symbols

１０ コンクリート構造体
１１ コア削孔
１２ 蓋体
１２ａ 削孔内挿入部
１２ｂ フランジ
１３ ロック機構
１４ スライドガイド
１５ スライドブロック
１５ａ 突部
１６ 係止部材
１６ａ 枢支片部
１６ｂ 先端
１７ ボルト
１７ａ 頭部
２０ 窓穴
２０ａ 下側縁部
２０ｂ 上側縁部
２１ キー
２２ キー溝
２３ ねじ穴
２５ 凹陥部
２６ ボルト挿通穴
２７ コイルスプリング
３０ 枢軸
３５ 凹溝
４０ 回転軸
４１ コンクリートカッター
４２ 回転切削冶具
４３ 半球状突部
４４ 球面座
５０ ロック機構
５１ スライドガイド
５２ ボルト
５３ スライドブロック
５３ａ 凹溝
５４ 板バネ状材
５４ａ 傾斜部 DESCRIPTION OF SYMBOLS 10 Concrete structure 11 Core drilling hole 12 Cover body 12a Drilling hole insertion part 12b Flange 13 Lock mechanism 14 Slide guide 15 Slide block 15a Protrusion part 16 Locking member 16a Pivoting piece part 16b Tip 17 Bolt 17a Head part 20 Window hole 20a Lower edge portion 20b Upper edge portion 21 Key 22 Key groove 23 Screw hole 25 Recessed portion 26 Bolt insertion hole 27 Coil spring 30 Axis 35 Recessed groove 40 Rotating shaft 41 Concrete cutter 42 Rotating cutting jig 43 Hemispherical protrusion 44 Spherical seat 50 Locking mechanism 51 Slide guide 52 Bolt 53 Slide block 53a Recess groove 54 Leaf spring material 54a Inclined portion

Claims (3)

コンクリート構造体に形成されたコア削孔内に挿入される削孔内挿入部と、該削孔内挿入部の端部外周に設けられ、前記コア削孔開口部周縁に当接するフランジとを一体に有する蓋体を備え、前記削孔内挿入部をコア削孔内に挿入して該コア削孔開口部を閉鎖するコンクリート構造体のコア削孔施蓋構造において、
前記コア削孔内の所定深さ位置の内周面にその周方向に連続した環状の凹溝を備え、
前記蓋体の中心部分にロック操作用のボルトを、その頭部を蓋体上面側に係止させて回動可能な状態に貫通させ、
前記蓋体の削孔内挿入部にその延長方向に向けてスライドガイド部材を備え、
該スライドガイド部材に対しその軸方向にのみ移動可能にスライドブロックを係合させ、
該スライドブロックを前記ボルトの先端部に螺嵌させ、
該スライドブロックには、コア削孔半径方向に出入自在な係止部材と、前記ボルトの回転によるスライドブロックのコア削孔軸方向の動作を前記係止部材のコア削孔半径方向の出入動作に変換する動作方向変換機構とを備え、
前記ボルトを回動操作してスライドブロックを移動させることによって前記係止部材がコア削孔半径方向に突出して前記係止用凹溝に挿抜されるようにしたことを特徴としてなるコンクリート構造体のコア削孔施蓋構造。 A hole insertion portion inserted into a core hole formed in a concrete structure and a flange provided on the outer periphery of the end of the hole insertion portion and in contact with the peripheral edge of the core hole opening are integrated. In the core hole covering structure of a concrete structure that includes the lid body, and inserts the hole insertion portion into the core hole to close the core hole opening,
Provided with an annular groove continuous in the circumferential direction on the inner peripheral surface at a predetermined depth position in the core drilling hole,
A bolt for locking operation in the center part of the lid body, the head is locked to the upper surface side of the lid body and penetrated in a rotatable state,
A slide guide member is provided in the direction of extension of the insertion part in the drilling hole of the lid,
The slide block is engaged with the slide guide member so as to be movable only in the axial direction,
The slide block is screwed to the tip of the bolt,
The slide block has a locking member that can be moved in and out in the core drilling radial direction, and the movement of the sliding block in the core drilling axis direction by the rotation of the bolt is changed to the movement of the locking member in the core drilling radial direction. An operation direction conversion mechanism for converting,
By rotating the bolt and moving the slide block, the locking member protrudes in the radial direction of the core drilling hole and is inserted into and extracted from the locking groove. Core drilling lid structure. 前記スライドガイド部材は前記コア削孔の内周面に沿って挿入される筒状をなし、該筒状のスライドガイド部材内に、該部材に対して軸方向にのみ移動可能にスライドブロックを収容し、前記係止部材は、一端側が前記スライドブロックに該ブロックの移動方向と直行する向きの回動中心軸によって枢支された回動アームをもって構成され、
前記ボルトを回転させてスライドガイドを移動させることにより前記回動アームの先端が前記筒状のスライドガイドに開けた窓を通して前記係止用凹溝に係合されるようにしてなる請求項１に記載のコンクリート構造体のコア削孔施蓋構造。 The slide guide member has a cylindrical shape that is inserted along the inner peripheral surface of the core drilling hole, and the slide block is accommodated in the cylindrical slide guide member so as to be movable only in the axial direction with respect to the member. The locking member is configured to have a rotating arm pivotally supported at one end by a rotating central axis in a direction perpendicular to the moving direction of the block.
2. The rotating guide according to claim 1, wherein the bolt is rotated to move the slide guide so that the tip of the rotating arm is engaged with the locking groove through a window opened in the cylindrical slide guide. The core drilling cover structure of the concrete structure described. 前記係止部材は、板バネ状材からなり、中央部分から両端側に、互いに対称な傾斜部を有し、前記スライドガイド部材は、前記操作用のボルトが挿入される鞘管をもって構成され、該鞘管の先端に前記板バネ状材の中央が固定され、前記スライドブロックは、前記板バネ状材の両傾斜部の間に挿入されており、
前記ボルトを回転させてスライドガイドを移動させることにより前記両傾斜部がスライドガイドに押されることによって板バネ状材の両端側が弾性的に変形されてコア削孔半径方向に突出して前記係止用凹溝に係合されるようにしてなる請求項１に記載のコンクリート構造体のコア削孔施蓋構造。 The locking member is made of a leaf spring-like material, has inclined portions symmetrical to each other from the center portion to both ends, and the slide guide member is configured with a sheath tube into which the operation bolt is inserted, The center of the leaf spring-like material is fixed to the tip of the sheath tube, and the slide block is inserted between both inclined portions of the leaf spring-like material,
By rotating the bolt and moving the slide guide, both the inclined portions are pushed by the slide guide, so that both end sides of the leaf spring-like material are elastically deformed and project in the radial direction of the core drilling hole. The core hole covering structure for a concrete structure according to claim 1, wherein the structure is engaged with a concave groove.
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Cited By (2)

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KR101588325B1 (en) * 2015-11-03 2016-01-26 주식회사디자인랜드 Combination Structure for Floor Deck
KR20200032398A (en) * 2018-09-18 2020-03-26 이윤경 Floor Deck Elastic Structure Using a Elastic Wood

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JPS6395707A (en) * 1986-10-09 1988-04-26 Yokowo Mfg Co Ltd Frequency converter
JP2005226344A (en) * 2004-02-13 2005-08-25 Tomita Chukosho:Kk Pavement surface repairing reinforcing part and pavement surface repairing method

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JPS6395707A (en) * 1986-10-09 1988-04-26 Yokowo Mfg Co Ltd Frequency converter
JP2005226344A (en) * 2004-02-13 2005-08-25 Tomita Chukosho:Kk Pavement surface repairing reinforcing part and pavement surface repairing method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101588325B1 (en) * 2015-11-03 2016-01-26 주식회사디자인랜드 Combination Structure for Floor Deck
KR20200032398A (en) * 2018-09-18 2020-03-26 이윤경 Floor Deck Elastic Structure Using a Elastic Wood
KR102174322B1 (en) * 2018-09-18 2020-11-04 이윤경 Floor Deck Elastic Structure Using a Elastic Wood

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