JP2009019417A - Lining board fixing structure - Google Patents

Lining board fixing structure Download PDF

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JP2009019417A
JP2009019417A JP2007183108A JP2007183108A JP2009019417A JP 2009019417 A JP2009019417 A JP 2009019417A JP 2007183108 A JP2007183108 A JP 2007183108A JP 2007183108 A JP2007183108 A JP 2007183108A JP 2009019417 A JP2009019417 A JP 2009019417A
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lining
fixing bolt
plate
metal fitting
girder
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JP5038801B2 (en
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Masao Shigeru
雅夫 茂
Yasuhisa Horiba
靖久 堀場
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Gecoss Corp
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Gecoss Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a lining board fixing structure in which a fastening nut can be positively fastened and a lining board can be rigidly fixed to a lining girder. <P>SOLUTION: The lining board fixing structure is formed of: a fixing bolt 3 penetrated through and fixed to a lower board 2a of the lining board 2; a pinching fitting 5 mounted to a shaft 3a of the fixing bolt 3 protruded to the lower side of the lower board 2a; a fastening nut 8 screwed to a shaft 3b of the fixing bolt 3 protruded to the upper side of the lower board 2a; a spring 4 mounted to the shaft 3a of the fixing bolt 3 at a location between the lower board 2a and the pinching fitting 5; and a detent fitting 6 mounted to the lower board in the vicinity of the pinching fitting 5. The pinching fitting 5 is mounted so as to be rotatable together with the fixing bolt 3 and inhibited from rotation when it is locked to a lower portion of a flange of the lining girder 1 by the detent fitting 6, and when the locking is canceled. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、主に地下工事などで覆工桁の上に敷設された覆工板を覆工桁に固定するために用いられる覆工板の取付け構造に関するものである。   The present invention relates to a lining plate mounting structure used for fixing a lining plate laid on a lining girder mainly in underground construction or the like to the lining girder.

地下鉄工事などの際には、地表部は交通に支障をきたさないように覆工板によって覆われている（図９（ｂ）参照）。覆工板は一般に、地表部に架け渡された覆工桁の上に敷設され、例えば、図９(ａ)に図示するような構造によって覆工桁に固定されている。   During subway construction and the like, the ground surface is covered with a lining plate so as not to hinder traffic (see FIG. 9B). In general, the lining plate is laid on a lining girder spanned on the ground surface, and is fixed to the lining girder by a structure as shown in FIG. 9A, for example.

図示するように、覆工板２０の下面板２０ａを固定ボルト２１が上から下方に貫通し、下面板２０ａの下側に突出した固定ボルト２１の軸部２１ａに挟持金具２２と固定ナット２７がそれぞれ取り付けられている。固定ナット２７は軸部２１ａに螺合され、当該固定ナット２７と軸部２１ａの先端部、さらに挟持金具２２の三者は溶接接合されている。   As shown in the drawing, a fixing bolt 21 penetrates the lower surface plate 20a of the lining plate 20 downward from above, and a clamping bracket 22 and a fixing nut 27 are attached to a shaft portion 21a of the fixing bolt 21 protruding downward from the lower surface plate 20a. Each is attached. The fixing nut 27 is screwed into the shaft portion 21a, and the fixing nut 27, the tip end portion of the shaft portion 21a, and the three members of the holding fitting 22 are joined by welding.

また、下面板２０ａの上側に突出した固定ボルト２１の軸部２１ｂには、締付けナット２３が螺合され、当該締付けナット２３と下面板２０との間にスプリング２４が介在されている。   Further, a tightening nut 23 is screwed onto the shaft portion 21 b of the fixing bolt 21 protruding above the lower surface plate 20 a, and a spring 24 is interposed between the tightening nut 23 and the lower surface plate 20.

そして、締付けナット２３を締め付けてスプリング２４の復元力を増大させることにより、挟持金具２２が覆工桁２５のフランジ２５ａを覆工板２０の下面板２０ａとともに下側から強く挟み込むことによって、覆工板２０は覆工桁２５の上に固定されている（特許文献１参照）。   Then, by tightening the tightening nut 23 to increase the restoring force of the spring 24, the clamping bracket 22 strongly clamps the flange 25a of the lining girder 25 together with the lower surface plate 20a of the lining plate 20 from the lower side. The board 20 is being fixed on the lining girder 25 (refer patent document 1).

また特に、下面板２０ａの下側面には、締付けナット２３を締め付ける際に、挟持金具２２が固定ボルト２１を介して締付けナット２３と共に供回りしないようにするための供回り防止板２６が取り付けられ、これにより締付けナット２３を締め付けても挟持金具２２が締付けナット２３および固定ボルト２１と共に回転しないようになっている。   In particular, a rotation prevention plate 26 is attached to the lower side surface of the lower surface plate 20a to prevent the clamping bracket 22 from rotating together with the tightening nut 23 via the fixing bolt 21 when the tightening nut 23 is tightened. As a result, even when the tightening nut 23 is tightened, the holding fitting 22 is prevented from rotating together with the tightening nut 23 and the fixing bolt 21.

さらに、覆工板２０の下面板２０ａの下側には、例えば図９(ｂ)に図示するように、振れ止め防止部材２７が取り付けられている。当該振れ止め防止部材２７は覆工板２０の横ずれを防止するストッパーとしての働きと、覆工板２０を吊って覆工桁２５，２５間に架け渡す際のガイド部材としての働きをする部材であり、当該振れ止め部材２７には通常アングル材が用いられ、覆工桁２５の内側８〜１０ｍｍ程度の位置に覆工桁２５の軸方向に沿って溶接により取り付けられている。   Further, an anti-swaying member 27 is attached to the lower side of the bottom plate 20a of the lining plate 20 as shown in FIG. 9B, for example. The anti-rest member 27 serves as a stopper for preventing the lateral displacement of the lining plate 20 and a member serving as a guide member when the lining plate 20 is suspended and bridged between the lining girders 25 and 25. In general, an angle member is used for the steadying member 27 and is attached to a position of about 8 to 10 mm inside the lining girder 25 along the axial direction of the lining girder 25 by welding.

特許第３３６６１１０号公報Japanese Patent No. 3366110 実公昭４０−１６６１６号公報Japanese Utility Model Publication No. 40-16616 実公昭４２−１１７０号公報Japanese Utility Model Publication No. 42-1170 実公昭４６−８６８７号公報Japanese Utility Model Publication No. 46-8687 特開平７−３３２３２１号公報JP-A-7-332321

しかし、上記した覆工板取付け構造では、挟持金具２２が固定ボルト２１に一体的に溶接されているため、覆工桁２５のフランジ２５ａが極端に厚い場合や薄い場合などに、固定ボルト２１が挟持金具２２と共に傾いてしまい、そのため締付けナット２３の締付け作業が非常に困難になり、覆工板を覆工桁２５の上に確実に固定できないことがあった。   However, in the above-described lining plate mounting structure, since the clamping bracket 22 is integrally welded to the fixing bolt 21, the fixing bolt 21 is used when the flange 25a of the lining girder 25 is extremely thick or thin. As a result, the clamping nut 22 is tilted together, so that the tightening operation of the clamping nut 23 becomes very difficult, and the lining plate may not be securely fixed on the lining girder 25.

また、覆工桁２５のフランジ２５ａの板厚が厚くなるに伴って、締付けナット２３を弛めて挟持金具２２を下げる必要があるが、挟持金具２２を下げすぎると、挟持金具２２が供回り防止板２６から外れてしまう。そのため、締付けナット２３を締め付けた際、挟持金具２２が締付けナット２３および固定ボルト２１と共に回転してしまうため、あまりフランジ２５ａの厚い覆工桁２５には使用できないという課題もあった。   Further, as the plate thickness of the flange 25a of the lining girder 25 becomes thicker, it is necessary to loosen the clamping nut 23 and lower the clamping bracket 22, but if the clamping bracket 22 is lowered too much, the clamping bracket 22 is rotated. It will come off from the prevention plate 26. For this reason, when the tightening nut 23 is tightened, the clamping metal member 22 rotates together with the tightening nut 23 and the fixing bolt 21, so that there is a problem that it cannot be used for the lining girder 25 having a thick flange 25a.

さらに、複数の覆工板を積み重ねて保管して置く際などに、下面板２０の下側に突出した固定ボルト２１の軸部に取り付けられた挟持金具２２および固定ナットが障害になって、安定した状態での保管が困難になるだけでなく、固定ボルトや挟持金具を変形して再利用が困難になるおそれがあった。   Further, when stacking and storing a plurality of lining plates, the clamping bracket 22 and the fixing nut attached to the shaft portion of the fixing bolt 21 protruding below the lower surface plate 20 become an obstacle, and are stable. In addition to being difficult to store in this state, there is a risk that the fixing bolts and the clamps may be deformed and reused.

本発明は、以上の課題を解決するためになされたもので、特に覆工桁のフランジの板厚の変化に自由に対応でき、しかも締付けナットを確実に締め付けることができて覆工板を覆工桁の上に強固に固定できるようにした覆工板取付け構造を提供することを目的とするものである。   The present invention has been made to solve the above-described problems.In particular, the present invention can freely cope with changes in the plate thickness of the flange of the lining girder, and can securely tighten the tightening nut to cover the lining plate. An object of the present invention is to provide a lining plate mounting structure that can be firmly fixed on a work girder.

請求項１記載の覆工板取付け構造は、覆工桁の上に敷設された覆工板を前記覆工桁に固定するための覆工板取付け構造であって、前記覆工板の下面板を貫通して取り付けられた固定ボルトと、前記下面板の下側に突出した前記固定ボルトの軸部に取り付けられた挟持金具と、前記下面板の上側に突出した前記固定ボルトの軸部に螺合された締付けナットと、前記下面板と前記挟持金具間の前記固定ボルトの軸部に取り付けられたスプリングと、前記挟持金具に近接して取り付けられた回転止め金具をそれぞれ備え、前記挟持金具は前記固定ボルトと共に回転し、前記回転止め金具により前記覆工桁のフランジ下に掛止した状態および当該掛止が解除された状態で回転が阻止されるように取り付けられてなることを特徴とするものである。   The lining plate mounting structure according to claim 1, wherein the lining plate mounting structure for fixing a lining plate laid on the lining girders to the lining girders, the lower plate of the lining plate A fixing bolt attached through the bottom plate, a clamping metal fitting attached to the shaft portion of the fixing bolt projecting to the lower side of the lower surface plate, and a shaft portion of the fixing bolt projecting to the upper side of the lower surface plate. A clamp nut, a spring attached to a shaft portion of the fixing bolt between the bottom plate and the clamp, and a rotation stopper mounted close to the clamp, wherein the clamp is It rotates with the said fixing bolt, It is attached so that rotation may be blocked | prevented in the state latched under the flange of the said lining girder by the said rotation stopping metal fitting, and the said latching | released state. Is.

本発明は、挟持金具が固定ボルトと共に回転し、回転止め金具に当たって覆工桁のフランジ下に掛止した状態および当該掛止が解除された状態で回転が阻止されるように取り付けたことで、覆工板を覆工桁の上に固定する際、および覆工板を覆工桁の上から撤去する際に、挟持金具を所定の位置に確実にセットできるようにしたものである。   The present invention is such that the clamping bracket rotates with the fixing bolt, is attached so as to be prevented from rotating in a state where it hits the rotation stopper and is latched under the flange of the lining girder and in a state where the latch is released, When the lining plate is fixed on the lining girder and when the lining plate is removed from the lining girder, the holding metal fitting can be surely set at a predetermined position.

この場合の回転止め金具には、アングル材（山形鋼）や溝形鋼などの形鋼を適当な長さに切断したものを用い、また覆工板の下側に溶接する等の方法によって簡単に取り付けることができる。   In this case, the anti-rotation bracket can be easily cut by using an angle material (angle steel) or channel steel cut to an appropriate length, and welded to the underside of the lining plate. Can be attached to.

請求項２記載の覆工板の取付け構造は、請求項１記載の覆工板の取付け構造において、挟持金具は、締付けナットの締付けによって下面板に当接した一端側部を支点に覆工桁のフランジ側に回転して当該覆工桁のフランジを挟み込むように取り付けられていることを特徴とするものである。   The lining plate mounting structure according to claim 2 is the lining plate mounting structure according to claim 1, wherein the clamping bracket is a lining girder with one end side abutting against the lower surface plate by tightening of a tightening nut as a fulcrum. It is attached so that it may rotate to the flange side and pinch | interpose the flange of the said lining girder.

本発明は、固定ボルトに螺合された締付けナットを締め付けるだけで、覆工桁のフランジを覆工板の下面板と挟持金具によって挟み込むように構成されていることで、覆工桁のフランジが厚い場合および薄い場合のいずれの場合でも、固定ボルトが下面板に対して常に垂直に立設した状態を維持し、これにより締付けナットを確実に締め付けることができて、覆工板を覆工桁の上に強固に固定できるようにしたものである。   According to the present invention, the flange of the lining girder is configured so that the flange of the lining girder is sandwiched between the bottom plate of the lining plate and the clamping bracket by simply tightening the tightening nut screwed to the fixing bolt. Regardless of whether it is thick or thin, the fixing bolt is always kept upright with respect to the bottom plate, so that the tightening nut can be securely tightened, and the lining plate is attached to the lining girder. It can be firmly fixed on the top.

請求項３記載の覆工板取付け構造は、請求項１または２記載の覆工板取付け構造において、挟持金具は固定ボルトの軸部に取付けナットによって取り付けられ、当該挟持金具と取付けナットとの当接部、および下面板に当接する挟持金具の一端側部と、覆工桁のフランジに当接する前記挟持金具の他端側部に凸曲面部がそれぞれ設けられていることを特徴とするものである。   The lining plate mounting structure according to claim 3 is the lining plate mounting structure according to claim 1 or 2, wherein the holding metal fitting is attached to the shaft portion of the fixing bolt with an attaching nut, and the holding metal fitting and the attaching nut are connected to each other. A convex curved surface portion is provided on each of the contact portion and one end side portion of the clamping metal fitting that contacts the lower surface plate and on the other end side portion of the clamping metal fitting that contacts the flange of the lining girder. is there.

本発明は、上記した各当接部が凸曲面で覆工板の下面板と覆工桁のフランジにそれぞれ当接していることで、各当接部における力の伝達が円滑となるため、覆工桁のフランジを無理なく確実に挟持することができる。また、挟持金具の動作が非常にスムーズとなり、作業性もよい。   In the present invention, since each of the contact portions is a convex curved surface and is in contact with the bottom plate of the lining plate and the flange of the lining girder, force transmission at each of the contact portions becomes smooth. The flange of the work girder can be clamped without difficulty. In addition, the operation of the clamping metal becomes very smooth and the workability is good.

請求項４記載の覆工板取付け構造は、請求項１〜３のいずれかに記載の覆工板取付け構造において、回転止め金具は覆工板の振れ止めを兼ねる位置に取り付けられていることを特徴とするものである。   The lining plate mounting structure according to claim 4 is the lining plate mounting structure according to any one of claims 1 to 3, wherein the rotation stopper is attached to a position that also serves as a steady stop of the lining plate. It is a feature.

本発明は、挟持金具の回転止め金具が覆工板の振れ止め防止材を兼用する構成としたことにより、部材数の低減による覆工板の製作コストの削減と構造の簡素化を可能にしたものである。   In the present invention, the rotation stopper of the clamping metal fitting is also used as the anti-swaying material for the lining plate, thereby reducing the production cost of the lining plate and simplifying the structure by reducing the number of members. Is.

これまで、この種の覆工板には、挟持金具の回転止めと覆工板の振れ止め防止の目的で二種類の部材が取り付けられていたが、本発明はこの目的の全く異なる二種類の部材を一つの部材が兼用する構成としたものである。   Up to now, two types of members have been attached to this type of lining plate for the purpose of preventing rotation of the holding metal fittings and preventing the lining plate from swinging. The member is configured to be shared by one member.

具体的には、振れ止め防止部材の２ケは、アングル材の外側面、もう２つはアングル材の先端を振れ止め防止面とし、覆工桁のフランジ外幅との寸法間隔８〜１０ｍｍとして設置するアングル材の幅面を使用するものは、挟持金具の幅に影響を受ける。一方、アングル材の先端を振れ止め面として使用するアングル材は、アングル材の長さに影響される。   Specifically, the two anti-swaying members are the outer surface of the angle member, and the other two are the anti-swaying surface at the tip of the angle member, and the distance between the outer width of the flange of the lining girder is 8 to 10 mm. The one that uses the width of the angle member to be installed is affected by the width of the clamp. On the other hand, the angle material using the tip of the angle material as a steady face is affected by the length of the angle material.

ＪＩＳ規格で規定されているアングル材の長さ１００ｍｍまでは、等辺のアングル材で１７種類、不等辺アングル材が６種類の合計２３種類を活用できる。覆工桁のフランジ幅＋８〜１０ｍｍの位置に適する挟持金具の回転止め金具として設置するアングル材を選定することは困難ではない。   Up to a length of 100 mm of the angle material defined in the JIS standard, a total of 23 types of 17 types of equilateral angle materials and 6 types of unequal side angle materials can be used. It is not difficult to select an angle member to be installed as a rotation stop fitting for a clamp fitting suitable for the flange width of the lining girder +8 to 10 mm.

覆工板の端部からの固定ボルトの位置関係は、覆工桁のフランジ幅の１／２＋３５ｍｍ〜５０ｍｍ程度が一般的である。   The positional relationship of the fixing bolt from the end of the lining plate is generally about 1/2 + 35 mm to 50 mm of the flange width of the lining girder.

具体例を上げて説明すると、図５（ｂ）において、フランジ幅３００ｍｍのＨ形鋼を覆工桁とし、覆工板のフランジ縁端部からの固定ボルトの位置を＋Ｈ＝４５ｍｍとする。挟持金具の幅をＢ＝５６ｍｍとすると、アングル材の厚さはｔ＝９ｍｍ、とすると覆工板の振れ止め幅は、ｓ＝{４５−(５６／２＋９)}＝８ｍｍとなる。   To explain with a specific example, in FIG. 5B, an H-shaped steel having a flange width of 300 mm is used as a lining girder, and the position of the fixing bolt from the flange edge of the lining plate is set to + H = 45 mm. Assuming that the width of the clamp is B = 56 mm, the thickness of the angle member is t = 9 mm, and if the thickness of the lining plate is s = {45− (56/2 + 9)} = 8 mm.

一方、図６(ｂ)において，固定ボルトと覆工桁のフランジの幅Ｈ＝４５ｍｍ、４５ｍｍ＋挟持金具の幅Ｂの１／２の２８ｍｍ、アングル材（Ｌ＝７５ｍｍ）の厚さｔ＝９ｍｍ、とすると覆工桁のフランジ縁端部と振れ止めアングル材の幅ｓは、{４５＋２８＋９)−７５}＝７ｍｍとなる。７ｍｍでは狭すぎるため、挟持金具とアングル材(回転止め金具)との間を１ｍｍはなす。結果として、逆回転角は９０度＋αとなる。プラスαが生じても特に問題はない。   On the other hand, in FIG. 6 (b), the width H of the fixing bolt and the flange of the lining girder is 45 mm, 45 mm + 28 mm that is 1/2 of the width B of the clamping metal, the thickness t of the angle member (L = 75 mm) t = 9 mm, Then, the flange s edge of the lining girder and the width s of the steady angle member are {45 + 28 + 9) −75} = 7 mm. Since 7 mm is too narrow, 1 mm is provided between the holding bracket and the angle member (rotation stopper). As a result, the reverse rotation angle is 90 degrees + α. There is no particular problem even if plus α occurs.

挟持金物の回転止めと覆工板の振れ止め防止の目的の部材としてアングル材を用いた方法について記述したが、市販のアングル材に変えて、プレス加工してアングル形状に成形したものを用いてもよい。   Although the method using an angle material as a member for the purpose of preventing the rotation of the sandwiching hardware and preventing the swaying of the lining plate has been described, instead of using a commercially available angle material, it was pressed and formed into an angle shape. Also good.

請求項５記載の覆工板取付け構造は、請求項１〜４のいずれかに記載の覆工板取付け構造において、回転止め金具は、下面板の下側に突出した固定ボルトの軸部および当該軸部に取り付けられた挟持金具より下方まで延びていることを特徴とするものである。   The lining plate mounting structure according to claim 5 is the lining plate mounting structure according to any one of claims 1 to 4, wherein the rotation stopper is a shaft portion of a fixing bolt that protrudes below the lower surface plate, and It extends below the clamping metal fitting attached to the shaft portion.

本発明は、主として複数の覆工板を積み重ねて保管する際などに、回転止め止め金具を覆工板の脚部として機能させることで、固定ボルトや挟持金具の影響を受けることなく、覆工板の重ね管理を容易かつ安全に行なえるようにしたものである。   In the present invention, when a plurality of lining plates are stacked and stored, the anti-rotation bracket is made to function as a leg portion of the lining plate, so that the lining can be performed without being affected by the fixing bolt or the clamping bracket. It is designed to easily and safely manage the stacking of boards.

請求項６記載の覆工板取付け構造は、請求項１〜５のいずれかに記載の覆工板取付け構造において、挟持金具に固定ボルトの回転を阻止するための回転止め部が設けられていることを特徴とするものである。   The lining plate mounting structure according to claim 6 is the lining plate mounting structure according to any one of claims 1 to 5, wherein the clamping member is provided with a rotation stopper for preventing rotation of the fixing bolt. It is characterized by this.

本発明は、固定ボルトを回転させた際に、挟持金具が固定ボルトと共に確実に回転して覆工桁のフランジ下に掛止した状態および当該掛止した状態が解除された状態に、挟持金具を所定の位置に確実にセットできるようにしたものである。   When the fixing bolt is rotated, the holding metal fitting is reliably rotated together with the fixing bolt to be hooked under the flange of the lining girder, and the hooked metal fitting is released from the hooked state. Can be reliably set at a predetermined position.

なお、固定ボルトの軸部を貫通させる目的で挟持金具に形成された貫通孔は、覆工桁のフランジの厚さの変化にも自由に対応できるように、挟持金具がボルト軸部に対して自由に傾くように挟持金具の長手方向に長い長孔とする必要があるが（図４（ａ），（ｂ）参照）、回転止め部が挟持金具の幅方向側の端部に設けてあれば、回転止め部が貫通孔を形成する際の障害になることはないので、貫通孔を必要な大きさの長孔に形成することができる。   In addition, the through-hole formed in the clamping bracket for the purpose of penetrating the shaft part of the fixing bolt allows the clamping bracket to be connected to the bolt shaft part so that it can respond freely to changes in the thickness of the flange of the lining girder. Although it is necessary to make it a long hole in the longitudinal direction of the holding fixture so that it can be freely tilted (see FIGS. 4 (a) and (b)), a rotation stopper is provided at the end of the clamping fixture in the width direction. For example, since the rotation stopper does not become an obstacle when forming the through hole, the through hole can be formed into a long hole having a required size.

また、回転止め部は挟持金具の幅方向の一端側にのみ、あるいは両端側に設けてもよい。また、回転止め部は特に形状にはこだわらないが、挟持金具の補強も兼ねるため、特に締付けナットを締め付けた際に曲げ応力の大きくなる部分を厚くまたは高く形成するのが望ましい。さらに、当該挟持金具は例えば鍛造などによって一体的に形成することができる。   Further, the rotation stop portion may be provided only on one end side in the width direction of the holding metal fitting or on both end sides. Further, the anti-rotation portion is not particularly limited in shape, but also serves to reinforce the holding metal fitting. Therefore, it is desirable that the portion where the bending stress is increased particularly when the tightening nut is tightened is formed thicker or higher. Furthermore, the clamping metal fitting can be integrally formed by forging or the like, for example.

本発明は、挟持金具が固定ボルトと共に回転し、回転止め金具に当たって覆工桁のフランジ下に掛止した状態および当該掛止が解除された状態で回転が阻止されるように取り付けられていることで、覆工板を覆工桁の上に固定する際、および覆工板を覆工桁の上から撤去する際に、挟持金具を覆工桁のフランジ下に確実に掛止し、かつ当該掛止した状態を確実に解除することができる等の効果がある。   The present invention is such that the clamping bracket rotates with the fixing bolt, and is attached so as to be prevented from rotating in a state where it is brought into contact with the rotation stopper and is latched under the flange of the lining girder and in a state where the latch is released. Then, when fixing the lining plate on the lining girder and when removing the lining plate from above the lining girder, securely hold the clamping bracket under the flange of the lining girder and There is an effect that the hooked state can be reliably released.

また、締付けナットの締め付けによって挟持金具が覆工板の下面板に当接した一端側部を支点に上方向に回転して覆工桁のフランジを覆工板の下面板とともに下側から強く挟み込むように取り付けられているため、覆工桁のフランジが厚い場合、薄い場合のいずれの場合でも、固定ボルトは下面板に対して常に垂直に立設した状態にあり、したがって、締付けボルトを確実に締め付けることができ、覆工板を受け部材の上に強固に固定することができる等の効果がある。   Also, by tightening the tightening nut, the clamping bracket is rotated upward with one end side where the clamping metal abuts the bottom plate of the lining plate as a fulcrum, and the flange of the lining girder is firmly clamped from the bottom side together with the bottom plate of the lining plate Therefore, the fixing bolt is always upright with respect to the bottom plate, regardless of whether the flange of the lining girder is thick or thin. It can be tightened, and there is an effect that the lining plate can be firmly fixed on the receiving member.

また、挟持金具は固定ボルトの軸部に取付けナットによって取り付けられ、当該挟持金具と取付けナットとの当接部、および下面板に当接する挟持金具の一端側部と、覆工桁のフランジ下に当接する前記挟持金具の他端側部に凸曲面部がそれぞれ設けられていることで、各当接部における力の伝達が円滑となるため、覆工桁のフラジンを無理なく確実に挟持することができる。   The clamping bracket is attached to the shaft portion of the fixing bolt with a mounting nut. The clamping bracket and the mounting nut are in contact with each other, on one end side of the clamping bracket that is in contact with the bottom plate, and under the flange of the lining girder. Since the convex curved surface portion is provided on the other end side portion of the holding metal fitting that comes into contact with each other, the force is smoothly transmitted at each contact portion, so that the fringe of the lining girder can be securely held without difficulty. Can do.

また、固定ボルトが覆工板の下面板と常に垂直を保持するため、挟持金具の動作が非常にスムーズとなり、作業性もよい。   Further, since the fixing bolt always keeps vertical with the lower surface plate of the lining plate, the operation of the clamping metal becomes very smooth and the workability is also good.

図１〜図６は、本発明に係る覆工板取付け構造の一例を示し、図において、Ｈ形鋼からなる覆工桁１の上に覆工板２が敷設され、当該覆工板２の下面板２ａを貫通して固定ボルト３が鉛直に取り付けられている。   1 to 6 show an example of a lining plate mounting structure according to the present invention. In the figure, a lining plate 2 is laid on a lining girder 1 made of H-section steel. A fixing bolt 3 is vertically attached through the lower surface plate 2a.

また、下面板２ａの下側に突出した固定ボルト３の軸部３ａにコイルスプリング４と挟持金具５がそれぞれ取り付けられている。コイルスプリング４は挟持金具５の上側に取り付けられ、当該コイルスプリング４の上端側の反力受けとなる補強プレート２ｂが下面板２ａの下側に取り付けられている。さらに、固定ボルト３および挟持金具５に近接して回転止め金具６が取り付けられている。   In addition, a coil spring 4 and a clamp metal fitting 5 are respectively attached to the shaft portion 3a of the fixing bolt 3 protruding below the lower surface plate 2a. The coil spring 4 is attached to the upper side of the holding metal fitting 5, and a reinforcing plate 2b serving as a reaction force receiver on the upper end side of the coil spring 4 is attached to the lower side of the lower surface plate 2a. Further, a rotation stop fitting 6 is attached in the vicinity of the fixing bolt 3 and the holding fitting 5.

挟持金具５は長方形板状に形成され、当該挟持金具５の軸部３ａを挟んで覆工桁１の反対側の端部、すなわち挟持金具５の後端部に真上に略直角に突出した支点反力受け部５ａが形成されている。   The holding metal fitting 5 is formed in a rectangular plate shape, and protrudes at a substantially right angle to the opposite end of the covering girder 1 across the shaft portion 3a of the holding metal fitting 5, that is, the rear end of the holding metal fitting 5. A fulcrum reaction force receiving portion 5a is formed.

また、軸部３ａを挟んで挟持金具５の幅方向の両端部には、後述する取付けナット７の回転を阻止する回転止め部５ｂ，５ｂが突設され、当該回転止め部５ｂ，５ｂ間に固定ボルト３の軸部３ａが貫通する貫通孔５ｃが形成されている。貫通孔５ｃは挟持金具５の長手方向に長い長孔に形成されている。   Further, rotation stoppers 5b and 5b for preventing rotation of a mounting nut 7 to be described later are provided at both ends in the width direction of the clamping metal fitting 5 with the shaft 3a interposed therebetween, and between the rotation stoppers 5b and 5b. A through hole 5c through which the shaft portion 3a of the fixing bolt 3 passes is formed. The through hole 5 c is formed as a long hole that is long in the longitudinal direction of the holding metal fitting 5.

また、挟持金具５の覆工桁１側の端部、すなわち挟持金具５の先端部および支点反力受け部５ａの上端部に断面略円弧状に突出した凸曲面部５ｄが形成され、貫通孔５ｃの下端側の両側部には真下に断面ほぼ円弧状に突出した凸曲面部５ｅ，５ｅが形成されている。   Further, a convex curved surface portion 5d protruding in a substantially arc shape in cross section is formed at the end portion of the clamping metal fitting 5 on the side of the lining girder 1, that is, the tip end portion of the clamping metal fitting 5 and the upper end portion of the fulcrum reaction force receiving portion 5a. On both side portions on the lower end side of 5c, convex curved surface portions 5e, 5e projecting in a substantially arc shape in cross section are formed immediately below.

凸曲面部５ｄは挟持金具５の幅方向に連続して形成され、凸曲面部５ｅ，５ｅは挟持金具５の幅方向に一定幅に形成されている。図４は挟持金具５の全体を示し、支点反力受け部５ａ、回転止め部５ｂ等を含めて鍛造などによって一体的に形成されている。   The convex curved surface portion 5 d is formed continuously in the width direction of the sandwiching metal fitting 5, and the convex curved surface portions 5 e and 5 e are formed with a constant width in the width direction of the sandwiching metal fitting 5. FIG. 4 shows the entire holding metal fitting 5, which is integrally formed by forging including the fulcrum reaction force receiving portion 5a, the rotation stopper 5b and the like.

このように形成された挟持金具５の貫通孔５ｃを固定ボルト３の軸部３ａが上から下方に貫通し、当該軸部３ａの下端部は回転止め部５ｂ，５ｂ間に突出している。   The shaft portion 3a of the fixing bolt 3 penetrates the through-hole 5c of the holding metal fitting 5 formed in this way from the top to the bottom, and the lower end portion of the shaft portion 3a protrudes between the rotation stop portions 5b and 5b.

そして、当該軸部３ａの下端部に取付けナット７が螺合され、当該取付けナット７は軸部３ａに溶接固定され、これにより挟持金具５は固定ボルト３の軸部３ａに脱落しないように取り付けられている。   Then, a mounting nut 7 is screwed to the lower end portion of the shaft portion 3a, and the mounting nut 7 is welded and fixed to the shaft portion 3a, so that the clamping metal fitting 5 is attached to the shaft portion 3a of the fixing bolt 3 so as not to drop off. It has been.

また、挟持金具５の回転止め部５ｂ，５ｂ間に取付けナット７が係止されていることで、固定ボルト３は単独での回転が阻止され、挟持金具５と共に回転するようになっている。   Further, since the mounting nut 7 is locked between the rotation stoppers 5 b and 5 b of the holding metal fitting 5, the fixing bolt 3 is prevented from rotating independently and rotates together with the holding metal fitting 5.

一方、下面板２ａの上側に突出した固定ボルト３の軸部３ｂに締付けナット８が螺合され、当該締付けナット８と下面板２ａとの間の軸部３ｂにガイドカラー９が取り付けられ、さらに、締付けナット８とボルト頭部３ｃとの間の軸部３ｄに間隔保持用ワッシャー１０が取り付けられている。   On the other hand, a tightening nut 8 is screwed onto the shaft portion 3b of the fixing bolt 3 protruding above the lower surface plate 2a, and a guide collar 9 is attached to the shaft portion 3b between the tightening nut 8 and the lower surface plate 2a. The spacing washer 10 is attached to the shaft portion 3d between the tightening nut 8 and the bolt head 3c.

コイルスプリング４は、挟持金具５と補強プレート２ｂとの間にあって、挟持金具５のほぼ重心位置を常時下方に押し付けて挟持金具５を水平な状態に保持するための部品である。   The coil spring 4 is a part between the clamping metal fitting 5 and the reinforcing plate 2b, and keeps the clamping metal fitting 5 in a horizontal state by always pressing the substantially center of gravity position of the clamping metal fitting 5 downward.

また、締付けナット８は締め付けることにより、挟持金具５を下面板２ａ側に強く引き寄せ、当該下面板２ａとによって覆工桁１のフランジ１ａを挟みこんで覆工板２を覆工桁１に固定するための部品である。そして、ガイドカラー９は締付けナット８が完全に締め付けられた際の締付けナット８の高さ位置を確保するための部品でもある。   Further, by tightening the clamping nut 8, the clamping metal fitting 5 is strongly pulled toward the lower surface plate 2 a, and the flange 1 a of the lining girder 1 is sandwiched by the lower surface plate 2 a to fix the lining plate 2 to the lining girder 1. It is a part to do. The guide collar 9 is also a part for securing the height position of the tightening nut 8 when the tightening nut 8 is completely tightened.

なお、挟持金具５はコイルスプリング４の復元力によって常時下方に押し下げられた状態にあることで、締付けナット８は固定ボルト３の軸部を介して常時ガイドカラー９の上に接した状態で取り付けられている。   The clamping metal fitting 5 is always pushed downward by the restoring force of the coil spring 4 so that the clamping nut 8 is always attached to the guide collar 9 through the shaft portion of the fixing bolt 3. It has been.

このような構成において、締付けナット８を締め付けると(時計回りに回す)、挟持金具５は固定ボルト３を介して下面板２ａ側に強く引き寄せられる。その際、コイルスプリング４は挟持金具５と補強プレート２ｂ間で強く圧縮されて縮むため、挟持金具５と下面板２ａとによって覆工桁１のフランジ１ａを強く挟み込むことができる。   In such a configuration, when the tightening nut 8 is tightened (turned clockwise), the clamping metal fitting 5 is strongly pulled toward the lower surface plate 2 a side via the fixing bolt 3. At that time, the coil spring 4 is strongly compressed and contracted between the sandwiching metal 5 and the reinforcing plate 2b, so that the flange 1a of the lining girder 1 can be firmly sandwiched between the sandwiching metal 5 and the lower surface plate 2a.

その際、締付けナット８を時計回りに締め付けると、挟持金具５は固定ボルト３を介して締付けナット８と共に回転しようとするが、図５(ａ)に図示するように、回転止め金具６に当たってそれ以上の回転が阻止され、 また、固定ボルト３の軸部３ａの取付けナット７が挟持金具５の回転止め部５ｂ，５ｂ間に掛止されることで固定ボルト３の回転も阻止されるため、締付けナット８のみを締め付けることができる。   At that time, when the tightening nut 8 is tightened clockwise, the clamping metal 5 tries to rotate together with the tightening nut 8 via the fixing bolt 3. However, as shown in FIG. Since the above rotation is blocked, and the mounting nut 7 of the shaft portion 3a of the fixing bolt 3 is hooked between the rotation stopping portions 5b and 5b of the holding metal fitting 5, the rotation of the fixing bolt 3 is also blocked. Only the tightening nut 8 can be tightened.

その結果、締付けナット８の締め付けのみで挟持金具５を下面板２ａ側に強く引き寄せることができ、これにより挟持金具５の支点反力受け部５ａが補強プレート２ｂに当接し、さらに当該支点反力受け部５ａを支点に挟持金具５が上方向に（図３（ａ）の矢印イ方向）回転して先端側が覆工板２の下面板２ａ側に引き寄せられることで、覆工桁１のフランジ１ａを下面板２ａと挟持金具５によって強く挟み込むことができる。   As a result, the clamp 5 can be strongly pulled toward the lower surface plate 2a only by tightening the clamping nut 8, whereby the fulcrum reaction force receiving portion 5a of the clamp 5 is brought into contact with the reinforcing plate 2b, and further the fulcrum reaction force The clamping metal fitting 5 rotates upward (in the direction of arrow A in FIG. 3A) with the receiving portion 5a as a fulcrum, and the leading end is drawn toward the lower surface plate 2a side of the lining plate 2, so that the flange of the lining girder 1 1a can be pinched strongly by the lower surface board 2a and the clamping metal fitting 5. FIG.

よって、締付けナット８を締め付けるだけで挟持金具５を覆工桁１に緊結することができ、これにより覆工板２の端部を覆工桁１の上に強固に固定することができる。この状態を表しているのが図３（ａ）である。   Therefore, the clamping metal fitting 5 can be fastened to the lining girder 1 simply by tightening the tightening nut 8, whereby the end portion of the lining plate 2 can be firmly fixed on the lining girder 1. This state is shown in FIG.

その際特に、挟持金具５の先端部、支点反力受け部５ａの上端部および貫通孔５ｃの下端側の両側部に上述した凸曲面部５ｄと５ｅがそれぞれ形成され、それぞれ補強プレート２ｂ、締付けナット７およびフランジ１ａの表面に当接し、さらに挟持金具５に形成された貫通孔５ｃが挟持金具５の長手方向に長い長孔に形成されていることで、挟持金具５の傾斜動作が非常にスムーズとなるため、覆工桁１のフランジ１ａの板厚が厚い場合、薄い場合のいずれの場合でも、覆工桁１のフランジ１ａを強固に挟み込むことができる。また、作業性もよい。   In particular, the convex curved surface portions 5d and 5e described above are formed on the tip end portion of the clamping metal fitting 5, the upper end portion of the fulcrum reaction force receiving portion 5a and the lower end side of the through hole 5c, respectively. The through-holes 5c formed in the holding metal 5 in contact with the surfaces of the nut 7 and the flange 1a are formed as long holes that are long in the longitudinal direction of the holding metal 5, so that the tilting movement of the holding metal 5 is extremely high. Since it becomes smooth, the flange 1a of the lining girder 1 can be firmly clamped in any case where the plate thickness of the flange 1a of the lining girder 1 is thick or thin. Also, workability is good.

一方、締付けナット８を緩めると（反時計回りに回すと）、コイルスプリング４の圧縮が徐々に開放され、同時に固定ボルト３はコイルスプリング４の復元力によって下面板２ａの下方に押し下げられ、これに伴ない挟持金具５も水平状態を保持した状態で下方に押し下げられるため、締付けナット８の締付けによる挟持金具５の固定が開放される。   On the other hand, when the tightening nut 8 is loosened (turned counterclockwise), the compression of the coil spring 4 is gradually released, and at the same time the fixing bolt 3 is pushed down below the lower surface plate 2a by the restoring force of the coil spring 4. Accordingly, the holding metal fitting 5 is pushed downward while maintaining the horizontal state, so that the fixing of the holding metal fitting 5 by tightening the tightening nut 8 is released.

よって、固定ボルト３を反時計回りに９０度以上回すことにより挟持金具５の先端側を覆工桁１の下フラジ１ａの下側から外すことができ、覆工桁１から覆工板２を撤去することができる。   Therefore, by turning the fixing bolt 3 counterclockwise by 90 degrees or more, the front end side of the clamping metal fitting 5 can be removed from the lower side of the lower flag 1a of the lining girder 1, and the lining plate 2 can be removed from the lining girder 1. Can be removed.

この場合、挟持金具５と補強プレート２ｂとの間に介在されたコイルスプリング４が挟持金具５のほぼ重心位置を下方に押し下げていることで、挟持金具５は大きく傾いたりすることなく、ほぼ水平を保持したままの状態で下方に押し下げられる。この状態を表しているのが図３（ｂ）である。   In this case, the coil spring 4 interposed between the sandwiching metal 5 and the reinforcing plate 2b pushes down the position of the center of gravity of the sandwiching metal 5 downward, so that the sandwiching metal 5 does not tilt greatly and is substantially horizontal. It is pushed down while holding This state is shown in FIG.

また、固定ボルト３の頭部３ｃと締付けナット８との間に間隔保持用ワッシャー１０が介在されていることにより、コイルスプリング４の復元力が完全に消滅してしまうことはないので、締付けナット８を完全に緩めても、固定ボルト３および挟持金具５ががたつくようなことはない。   In addition, since the spacing washer 10 is interposed between the head 3c of the fixing bolt 3 and the tightening nut 8, the restoring force of the coil spring 4 does not completely disappear. Even if 8 is completely loosened, the fixing bolt 3 and the clamp 5 are not rattled.

締付けナット８を緩めると、挟持金具５は固定ボルト３を介して締付けナット８と共に回転するが、当該挟持金具５は固定ボルト３と共に反時計回りに略２７０°回転した時点で回転止め金具６に当たってそれ以上の回転が阻止されるため、締付けナット８のみを緩めることができる。   When the clamping nut 8 is loosened, the clamping metal fitting 5 rotates together with the clamping nut 8 via the fixing bolt 3, but the clamping metal fitting 5 hits the anti-rotation metal fitting 6 when it rotates approximately 270 ° counterclockwise together with the fixing bolt 3. Since further rotation is prevented, only the clamping nut 8 can be loosened.

回転止め金具６は覆工板２のずれ止め部材、さらには複数の覆工板２を重ねて保管して置く際の脚部材を兼ねた金物であり、例えば図１(ａ)に図示するように、固定ボルト３および挟持金具５の位置に対し、覆工桁１の軸方向の一端側に取り付けられている。   The anti-rotation bracket 6 is a hardware that also serves as a stopper member for the displacement of the lining plate 2 and also a leg member for storing and placing a plurality of the lining plates 2 in an overlapping manner, for example, as shown in FIG. In addition, it is attached to one end side in the axial direction of the lining girder 1 with respect to the positions of the fixing bolt 3 and the holding metal fitting 5.

また、回転止め金具６はＬ形鋼などのアングル材から固定ボルト３の軸部先端、挟持金具５および取付けナット７より下方まで延びる長さに形成され、一方のフランジ１ａを覆工桁１の軸方向に略平行に沿わせ、上端部を下面板２ａに溶接することにより取り付けられている。   Further, the rotation stopper 6 is formed to have a length extending from an angle member such as L-shaped steel to the lower end of the shaft portion of the fixing bolt 3, the clamping bracket 5 and the mounting nut 7, and one flange 1 a of the lining girder 1. It is attached by welding the upper end portion to the lower surface plate 2a so as to be substantially parallel to the axial direction.

そして、締付けナット８を時計回りに回して締め付けると、挟持金具５は固定ボルト３を介して締付けナット８と共に時計回りに回転するが、先端側が覆工桁１側に略直角に向き、覆工桁１のフランジ１ａの下側に掛止した状態で先端側の側部が回転止め金具６のフランジ６ａの先端に当たることによりそれ以上の回転が阻止されるため、締付けナット８のみを締め付けることができ、挟持金具５を固定することができる。   When the tightening nut 8 is turned clockwise and tightened, the clamping metal fitting 5 rotates clockwise together with the tightening nut 8 via the fixing bolt 3, but the tip side is directed substantially perpendicular to the lining girder 1 side, Since the side of the tip side hits the tip of the flange 6a of the anti-rotation fitting 6 while being hooked on the lower side of the flange 1a of the beam 1, further rotation is prevented, so that only the tightening nut 8 can be tightened. And the clamping metal fitting 5 can be fixed.

一方、締付けナット８を反時計回りに回して緩めると、挟持金具５は固定ボルト３を介して締付けナット８と共に反時計回りに回転するが、略２７０°回転して覆工桁１と略平行な状態になった位置で挟持金具５の先端側の側部が回転止め金具６のフランジ６ａの内側に当たってそれ以上の回転が阻止されるため、締付けナット８のみを緩めることができる。そして、
挟持金具５は回転止め金具６のフランジ６ａの内側に沿わせて収納しておくことができる。 On the other hand, when the tightening nut 8 is turned counterclockwise and loosened, the clamping bracket 5 rotates counterclockwise together with the tightening nut 8 via the fixing bolt 3, but rotates approximately 270 ° and is approximately parallel to the lining girder 1. Since the side portion on the front end side of the holding metal fitting 5 hits the inside of the flange 6a of the rotation stop metal fitting 6 at the position where it is in a state, further rotation is prevented, so that only the tightening nut 8 can be loosened. And
The holding metal fitting 5 can be stored along the inside of the flange 6 a of the rotation stopper metal 6.

図６(ａ)，(ｂ)は、回転止め金具６の取付け位置を変え、挟持金具５を時計回りおよび反時計回りにそれぞれ９０度回転させることにより、当該挟持金具５の先端が覆工桁１のフランジ１ａの下側に掛止した状態および当該掛止が解除された状態にセットできるようにしたものである。   6 (a) and 6 (b), the attachment position of the rotation stopper metal fitting 6 is changed, and the clamping metal fitting 5 is rotated 90 degrees clockwise and counterclockwise, respectively, so that the tip of the clamping metal fitting 5 is covered with a lining girder. 1 can be set in a state where it is latched under the flange 1a and in a state where the latch is released.

次に、挟持金具５が回転止め金具６のフランジ６ａの内側に沿って収納されている状態(図５(ｂ)参照)から覆工桁１のほぼ軸直角方向に向いた状態にセットされて(図５(ａ)参照)、覆工板２を覆工桁１の上に固定する方法について簡単に説明する。   Next, the clamping metal fitting 5 is set from the state in which it is housed along the inside of the flange 6a of the anti-rotation metal fitting 6 (see FIG. 5B) to the state in which the lining girder 1 is directed substantially in the direction perpendicular to the axis. (See FIG. 5 (a)), a method for fixing the lining plate 2 on the lining girder 1 will be briefly described.

最初に、覆工板２の上面板２ｃに形成された操作孔２ｄ内にインパクトレンチ(図省略)を挿入し、当該インパクトレンチを介して締付けナット８を反時計回りに回して緩める。すなわち、締付けナット８を固定ボルト３の頭部３ｃ側に移動させる。   First, an impact wrench (not shown) is inserted into the operation hole 2d formed in the upper surface plate 2c of the lining plate 2, and the tightening nut 8 is turned counterclockwise and loosened through the impact wrench. That is, the clamping nut 8 is moved to the head 3c side of the fixing bolt 3.

その際、挟持金具５は、先端側が回転止め金具６のフランジ６ａの内側に当たって回転できない状態にあるので、締付けナット８のみを反時計回りに回して緩めることができる。   At this time, the clamping metal 5 is in a state in which the tip side is in contact with the inner side of the flange 6a of the rotation stopper 6 and cannot be rotated, so that only the tightening nut 8 can be turned counterclockwise to be loosened.

次に、インパクトレンチを介して固定ボルト３を時計回りに回す。そうすると、挟持金具５は固定ボルト３と共に時計回りに回転するが、ほぼ２７０度回転した位置で挟持金具５の先端側の側部が回転止め金具６のフランジ６ａの先端部に当たって回転が阻止される。その結果、挟持金具５を覆工桁１のほぼ軸直角方向に向け、その先端側を覆工桁１のフランジ１ａの下側に掛止させることができる(図５(ａ)参照)。   Next, the fixing bolt 3 is rotated clockwise through the impact wrench. Then, the clamping metal fitting 5 rotates clockwise together with the fixing bolt 3, but the side part on the distal end side of the clamping metal fitting 5 hits the distal end part of the flange 6 a of the rotation stopper metal 6 at a position rotated approximately 270 degrees to prevent the rotation. . As a result, the holding metal fitting 5 can be directed substantially in the direction perpendicular to the axis of the lining girder 1 and its tip side can be hooked under the flange 1a of the lining girder 1 (see FIG. 5 (a)).

なお、この場合の挟持金具５の向きは、固定ボルト３のボルト頭部３ｃに挟持金具５の向きを示す目印（図省略）を設けておけば、操作孔２ｄの外側からでも容易に確認することができる。   In this case, the orientation of the clamping metal 5 can be easily confirmed from the outside of the operation hole 2d if a mark (not shown) indicating the orientation of the clamping metal 5 is provided on the bolt head 3c of the fixing bolt 3. be able to.

次に、インパクトレンチを介して締付けナット８を時計回りに回して締め付ける。すなわち、締付けナット８を下面板２ａ側に下降させる。その際、当初挟持金具５は固定ボルト３を介して締付けナット８と共に回転しようとするが、回転止め金具６のフランジ６ａの先端部に当たって回転できない状態にあるため、締付けナット８のみを時計回りに締め付けることができる。   Next, the tightening nut 8 is turned clockwise through an impact wrench to be tightened. That is, the tightening nut 8 is lowered toward the lower surface plate 2a. At that time, the clamping metal 5 initially tries to rotate together with the tightening nut 8 via the fixing bolt 3, but is unable to rotate by hitting the tip of the flange 6 a of the rotation stopper 6, so only the tightening nut 8 is rotated clockwise. Can be tightened.

締付けナット８を時計回りに締め付けると、コイルスプリング４は挟持金具５と補強プレート２ｂ間で圧縮されて縮み、挟持金具５は固定ボルト３を介して下面板２ａ側に強く引き寄せられるため、挟持金具５の支点反力受け部５ａが補強プレート２ｂに当接し、さらに当該支点反力受け部５ａを支点に挟持金具５の先端側が覆工板２側に（図３（ａ）の矢印イ方向）回転して覆工板２の下面板２ａ側に引き寄せられることで、覆工桁１のフランジ１ａを下面板２ａとともに挟持金具５によって挟み込むことができる。よって、覆工板２を覆工桁１の上に固定することができる。   When the tightening nut 8 is tightened clockwise, the coil spring 4 is compressed and contracted between the sandwiching bracket 5 and the reinforcing plate 2b, and the sandwiching bracket 5 is strongly pulled toward the lower surface plate 2a via the fixing bolt 3, so that the sandwiching bracket The fulcrum reaction force receiving portion 5a abuts against the reinforcing plate 2b, and the front end side of the clamp 5 is directed to the lining plate 2 with the fulcrum reaction force receiving portion 5a as a fulcrum (in the direction of arrow A in FIG. 3A). The flange 1a of the lining girder 1 can be sandwiched by the clamping metal fitting 5 together with the lower surface plate 2a by rotating and being drawn toward the lower surface plate 2a side of the lining plate 2. Therefore, the lining plate 2 can be fixed on the lining girder 1.

図７と図８は、本発明に係る覆工板取付け構造の他の例を示し、特に挟持金具の形状が先の例(図４)で説明した挟持金具と違っている。この場合の挟持金具５は、覆工桁１の軸直角方向に細長い長方形板状に形成され、当該挟持金具５の後端部に支点反力受け部５ａが形成され、後端部からやや覆工桁１側寄りに回転止め部５ｆが垂設されている。さらに、回転止め部５ｆに近接する位置に貫通孔５ｃが形成されている。   7 and 8 show another example of the lining plate mounting structure according to the present invention, and in particular, the shape of the clamping metal is different from the clamping metal explained in the previous example (FIG. 4). In this case, the holding metal fitting 5 is formed in a rectangular plate shape elongated in the direction perpendicular to the axis of the lining girder 1, and a fulcrum reaction force receiving portion 5 a is formed at the rear end portion of the holding metal fitting 5. An anti-rotation portion 5f is provided close to the work beam 1 side. Further, a through hole 5c is formed at a position close to the rotation stopper 5f.

また、挟持金具５の先端部と支点反力受け部５ａの上端部、および貫通孔５ｃの下端側の両側部に凸曲面部５ｄと凸曲面部５ｅがそれぞれ形成されている。   Further, a convex curved surface portion 5d and a convex curved surface portion 5e are formed on the front end portion of the sandwiching metal fitting 5, the upper end portion of the fulcrum reaction force receiving portion 5a, and both side portions on the lower end side of the through hole 5c.

そして、貫通孔５ｃを固定ボルト３の軸部３ａが貫通し、軸部３ａの下端部に抜止めナット７が螺合され、当該取付けナット７は軸部３ａに溶接固定され、これにより挟持金具５は固定ボルト３の軸部３ａに一体的に取り付けられている。   Then, the shaft portion 3a of the fixing bolt 3 passes through the through hole 5c, the retaining nut 7 is screwed to the lower end portion of the shaft portion 3a, and the mounting nut 7 is welded and fixed to the shaft portion 3a. 5 is integrally attached to the shaft portion 3 a of the fixing bolt 3.

また、挟持金具５の回転止め部５ｆが取付けナット７に掛止した状態で固定ボルト３の回転が阻止されている。その他の構成および取付け方法は図４に図示した挟持金具と同じである。   Further, the rotation of the fixing bolt 3 is prevented in a state where the rotation stopper 5 f of the clamping metal fitting 5 is hooked on the mounting nut 7. Other configurations and attachment methods are the same as those of the holding metal fitting shown in FIG.

本発明は、地下工事などで覆工桁の上に敷設された覆工板を覆工桁に容易にかつ強固に固定することができる。   INDUSTRIAL APPLICABILITY The present invention can easily and firmly fix a lining plate laid on a lining girder in underground construction or the like to the lining girder.

本発明の覆工板取付け構造の一例を示し、（ａ）は覆工桁の上に覆工板が固定された状態を示す一部断面図、（ｂ）はその一部平面図である。An example of the lining board attachment structure of this invention is shown, (a) is a partial cross section figure which shows the state by which the lining board was fixed on the lining girder, (b) is the partial top view. 覆工桁の上に覆工板が固定された状態を示し、（ａ）は図１（ａ）におけるハ部拡大断面図、（ｂ）は図２（ａ）におけるニ−ニ腺断面図である。A state in which a lining plate is fixed on a lining girder is shown, (a) is an enlarged sectional view of a section in FIG. 1 (a), and (b) is a sectional view of a knee line in FIG. 2 (a). is there. 固定ボルトおよび挟持金具の動作を示し、（ａ）は締付けナットを締め付けた状態を示す断面図、（ｂ）は締付けナットを緩めてボルト頭部を押し込んだ状態の拡大断面図である。The operations of the fixing bolt and the clamp are shown, (a) is a cross-sectional view showing a state in which the tightening nut is tightened, and (b) is an enlarged cross-sectional view in a state in which the tightening nut is loosened and the bolt head is pushed in. 挟持金具を示し、（ａ）は平面図、（ｂ）は底面図、（ｃ）は右側面図、（ｄ）は断面図である。The holding metal fitting is shown, (a) is a plan view, (b) is a bottom view, (c) is a right side view, and (d) is a sectional view. 挟持金具の２７０度回転動作を示し、(ａ)は挟持金具が覆工桁のフランジ下に掛止した状態にセットされた状態を示す底面図、(ｂ)は挟持金具が回転止め金具に沿わせて収納された状態にセットされた状態を示す底面図である。The 270-degree rotation operation of the clamp is shown, (a) is a bottom view showing the clamp set in a state of being hooked under the flange of the lining girder, and (b) is the clamp clamp along the anti-rotation bracket. It is a bottom view which shows the state set to the state accommodated. 挟持金具の９０度回転動作を示し、(ａ)は挟持金具が覆工桁のフランジ下に掛止した状態にセットされた状態を示す底面図、(ｂ)は挟持金具が回転止め金具に沿わせて収納された状態にセットされた状態を示す底面図である。A 90 ° rotation operation of the clamp is shown. (A) is a bottom view showing a state where the clamp is set in a state of being hooked under the flange of the lining girder. It is a bottom view which shows the state set to the state accommodated. 本発明の覆工板取付け構造の他の例を示し、（ａ）は覆工桁の上に覆工板が固定された状態を示す一部断面図、（ｂ）は覆工板の固定が解除された状態を示す一部断面図である。The other example of the lining board attachment structure of this invention is shown, (a) is a partial cross section figure which shows the state by which the lining board was fixed on the lining girder, (b) is fixation of a lining board. It is a partial sectional view showing the state released. 挟持金具を示し、（ａ）は平面図、（ｂ）は断面図、（ｃ）は右側面図である。The clamping metal fitting is shown, (a) is a plan view, (b) is a sectional view, and (c) is a right side view. (ａ)，(ｂ)は従来の覆工板取付け構造の一例を示す断面図である。(a), (b) is sectional drawing which shows an example of the conventional lining board attachment structure.

符号の説明Explanation of symbols

１ 覆工桁
２ 覆工板
２ａ 下面板
２ｂ 補強プレート
２ｃ 上面板
２ｄ 操作孔
３ 固定ボルト
３ａ 軸部
３ｂ 軸部
３ｃ ボルト頭部
３ｄ 軸部
４ コイルスプリング
５ 挟持金具
５ａ 支点反力受け部
５ｂ 回転止め部
５ｃ 貫通孔
５ｄ 凸曲面部
５ｅ 凸曲面部
５ｆ 供回り防止部
６ 回転止め金具
６ａ フランジ
７ 取付けナット
８ 締付けナット
９ ガイドカラー
１０ 間隔保持用ワッシャー
Ｈ 覆工板と固定ボルトとの距離
Ｂ 挟持金具の幅
Ｌ アングル材のサイズ
ｔ アングル材の厚さ
ｓ アングル材と覆工桁とのクリアランス DESCRIPTION OF SYMBOLS 1 Covering girder 2 Covering plate 2a Lower surface plate 2b Reinforcement plate 2c Upper surface plate 2d Operation hole 3 Fixing bolt 3a Shaft part 3b Shaft part 3c Bolt head part 3d Shaft part 4 Coil spring 5 Clamping metal 5a Support point reaction force receiving part 5b Rotation Stop portion 5c Through hole 5d Convex surface portion 5e Convex surface portion 5f Rotation prevention portion 6 Anti-rotation bracket 6a Flange 7 Mounting nut 8 Tightening nut 9 Guide collar 10 Spacer washer H Distance between cover plate and fixing bolt B Bracket width L Angle material size t Angle material thickness s Clearance between angle material and lining girder

Claims (6)

覆工桁の上に敷設された覆工板を前記覆工桁に固定するための覆工板取付け構造であって、前記覆工板の下面板を貫通して取り付けられた固定ボルトと、前記下面板の下側に突出した前記固定ボルトの軸部に取り付けられた挟持金具と、前記下面板の上側に突出した前記固定ボルトの軸部に螺合された締付けナットと、前記下面板と前記挟持金具間の前記固定ボルトの軸部に取り付けられたスプリングと、前記挟持金具に近接して取り付けられた回転止め金具をそれぞれ備え、前記挟持金具は前記固定ボルトと共に回転し、前記回転止め金具によって前記覆工桁のフランジ下に掛止した状態および当該掛止が解除された状態で回転が阻止されるように取り付けられてなることを特徴とする覆工板の取付け構造。   A lining plate mounting structure for fixing a lining plate laid on a lining girder to the lining girder, wherein the fixing bolt is attached through the lower surface plate of the lining plate, and A clamp fitting attached to the shaft portion of the fixing bolt protruding below the lower surface plate, a clamping nut screwed to the shaft portion of the fixing bolt protruding above the lower surface plate, the lower surface plate and the A spring attached to the shaft portion of the fixing bolt between the holding metal fittings and a rotation stop fitting attached in the vicinity of the holding metal fitting are provided, and the holding metal fitting rotates with the fixing bolt, A structure for attaching a lining plate, wherein the lining plate is attached so as to be prevented from rotating in a state where it is latched under a flange of the lining girder and in a state where the latch is released. 挟持金具は、締付けナットの締付けによって下面板に当接した一端側部を支点に覆工桁のフランジ側に回転して当該覆工桁のフランジを挟み込むように取り付けられていることを特徴とする請求項１記載の覆工板取付け構造。   The clamping bracket is attached so that the flange of the lining girder is sandwiched by rotating to the flange side of the lining girder with the one end side abutting on the lower surface plate as a fulcrum by tightening of the clamping nut. The lining board mounting structure according to claim 1. 挟持金具は固定ボルトの軸部に取付けナットによって取り付けられ、当該挟持金具と取付けナットとの当接部、および下面板に当接する挟持金具の一端側部と、覆工桁のフランジに当接する前記挟持金具の他端側部に凸曲面部がそれぞれ設けられていることを特徴とする請求項１または２記載の覆工板取付け構造。   The clamping metal fitting is attached to the shaft portion of the fixing bolt by a mounting nut, the abutting portion between the clamping metal fitting and the mounting nut, one end side portion of the clamping metal fitting abutting against the lower surface plate, and the flange of the lining girder 3. The lining plate mounting structure according to claim 1, wherein a convex curved surface portion is provided on the other end side portion of the holding metal fitting. 回転止め金具は、覆工板の振れ止めを兼ねる位置に取り付けられていることを特徴とする請求項１〜３のいずれかに記載の覆工板取付け構造。   The lining plate mounting structure according to any one of claims 1 to 3, wherein the rotation stopper is attached to a position that also serves as a steady stop for the lining plate. 回転止め金具は、下面板の下側に突出した固定ボルトの軸部および当該軸部に取り付けられた挟持金具より下方まで延びていることを特徴とする請求項１〜４のいずれかに記載の覆工板取付け構造。   The rotation stop fitting extends below a shaft portion of a fixing bolt projecting to the lower side of the lower surface plate and a clamp fitting attached to the shaft portion. Lining board mounting structure. 挟持金具に固定ボルトの回転を阻止するための回転止め部が設けられていることを特徴とする請求項１〜５のいずれかに記載の覆工板取付け構造。   The lining plate mounting structure according to any one of claims 1 to 5, wherein a rotation stop portion for preventing rotation of the fixing bolt is provided in the holding metal fitting.
JP2007183108A 2007-07-12 2007-07-12 Lining board mounting structure Active JP5038801B2 (en)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101151837B1 (en) * 2011-11-14 2012-06-01 주식회사 제이케이에이 The connect structure of led lamp housing in train
JP2014025308A (en) * 2012-07-30 2014-02-06 Hirose & Co Ltd Clamping device for covering plate
JP2017040098A (en) * 2015-08-20 2017-02-23 新日鐵住金株式会社 Manufacturing method of lining plate fastening device and lining plate fastening method
JP2019183430A (en) * 2018-04-04 2019-10-24 株式会社ＮｅｊｉＬａｗ Fastening device

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Publication number Priority date Publication date Assignee Title
JPH07332321A (en) * 1994-06-02 1995-12-22 Nippon Steel Corp Method and device for installing awning deck on bearing girder
JPH09228305A (en) * 1996-02-28 1997-09-02 Sumitomo Metal Ind Ltd Lining board fastening metal fitting
JP2005068682A (en) * 2003-08-20 2005-03-17 Mn Kenzai Kk Fastener for lining plate, method of manufacturing the fastener, and method of using the fastener
JP2006161549A (en) * 2004-11-12 2006-06-22 Gecoss Corp Lining plate fixing structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07332321A (en) * 1994-06-02 1995-12-22 Nippon Steel Corp Method and device for installing awning deck on bearing girder
JPH09228305A (en) * 1996-02-28 1997-09-02 Sumitomo Metal Ind Ltd Lining board fastening metal fitting
JP2005068682A (en) * 2003-08-20 2005-03-17 Mn Kenzai Kk Fastener for lining plate, method of manufacturing the fastener, and method of using the fastener
JP2006161549A (en) * 2004-11-12 2006-06-22 Gecoss Corp Lining plate fixing structure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101151837B1 (en) * 2011-11-14 2012-06-01 주식회사 제이케이에이 The connect structure of led lamp housing in train
JP2014025308A (en) * 2012-07-30 2014-02-06 Hirose & Co Ltd Clamping device for covering plate
JP2017040098A (en) * 2015-08-20 2017-02-23 新日鐵住金株式会社 Manufacturing method of lining plate fastening device and lining plate fastening method
JP2019183430A (en) * 2018-04-04 2019-10-24 株式会社ＮｅｊｉＬａｗ Fastening device
JP7062275B2 (en) 2018-04-04 2022-05-06 株式会社NejiLaw Fastening device

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