JP2019085696A - Sleeper for working platform - Google Patents

Sleeper for working platform Download PDF

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JP2019085696A
JP2019085696A JP2017211593A JP2017211593A JP2019085696A JP 2019085696 A JP2019085696 A JP 2019085696A JP 2017211593 A JP2017211593 A JP 2017211593A JP 2017211593 A JP2017211593 A JP 2017211593A JP 2019085696 A JP2019085696 A JP 2019085696A
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pair
longitudinal direction
support
gantry
reinforcing
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JP6566494B2 (en
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千裕 太田良
Chihiro Tatara
千裕 太田良
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TAISEN IND CO Ltd
TAISEN INDUSTRY CO Ltd
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TAISEN INDUSTRY CO Ltd
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Abstract

To provide a sleeper for a working platform capable of improving strength while suppressing an increase in weight.SOLUTION: In a sleeper 10 supporting a floor plate 96 through a joist 95, a rectangular cylindrical body 31 having an upper wall 311, a lower wall 313 and a pair of right and left side walls 312 is provided; both end parts in the longitudinal direction are supported by a sleeper bracket 94, a support part 3 on which a joist 95 is placed on an upper wall 311, a reinforcement pipe 7 which extends along the supporting part 3 below the supporting part 3, and a plurality of connection plates 50 which connect the lower wall 313 to the reinforcement pipe 7 are provided; the supporting part 3 is erected at a central part in the width direction perpendicular to the longitudinal direction, and has reinforcing ribs 32 for connecting the upper wall 311 and the lower wall 313 over the entire length.SELECTED DRAWING: Figure 5

Description

本発明は、土木工事の現場等で、車輌や重機の通行等に用いられる構台の構台用大引に関する。   BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a gantry for a gantry of a gantry used for passing vehicles and heavy machinery at a site of civil engineering work or the like.

土木工事の現場等では、車輌や重機等が通行する構台が設けられる。この構台は、傾斜した床面（斜面）や水平な床面（水平面）を有する仮設の架台であり、足場や各種資材の仮置き場所としても使用される。   At sites of civil engineering work, etc., there is provided a gantry through which vehicles and heavy machinery pass. This gantry is a temporary mount having an inclined floor surface (slope) and a horizontal floor surface (horizontal surface), and is also used as a temporary placement place for scaffolding and various materials.

構台は、左右及び前後方向に間隔を空けて立設した多数の支柱を有しており、その隣り合う支柱が水平材によって連結され、水平材どうしがブレース材（筋交い）によって連結されている。また、支柱の上端には、大引受が取り付けられており、隣り合う大引受間に、構台用大引（梁）が、その両端部分を大引受に支持された状態で掛け渡されている。以下、構台用大引を、単に大引と称することがある。   The gantry has a large number of columns erected at intervals in the left and right and front and rear directions, and the adjacent columns are connected by horizontal members, and the horizontal members are connected by braces (crossings). In addition, a large bearing is attached to the upper end of the column, and a large pulling (a beam) for a gantry is bridged in a state where both end portions are supported by the large bearing between adjacent large bearings. Hereinafter, the platform pull may be referred to simply as a pull.

隣り合う大引間には、大引の長手方向に所定の間隔を空けて複数の根太が掛け渡されている。根太には床面を構成する床板（足場板）が設置されると共に、手摺柱や手摺、幅木等が設けられている。   A plurality of joists are bridged at predetermined intervals in the longitudinal direction of the girder between adjacent giraffes. A floor board (scaffolding board) constituting a floor surface is installed at the joists, and handrails, handrails, skirting boards and the like are provided.

根太を介して床板を支持する大引には、Ｈ型鋼が用いられる場合もあるが、山あいにおける法面の現場等、クレーン等の重機の乗入れができない現場などでは、人手によって運搬や組立を行う必要がある。このため、重機の乗入れができない現場等では、角形鋼管を用いた軽量な大引が採用されている（例えば、特許文献１及び特許文献２等参照）。   H-shaped steel may be used to support floorboards via joists, but at sites such as slopes in piles or other places where heavy equipment such as cranes can not be loaded or carried by hand There is a need. For this reason, in the field etc. which can not carry in heavy machinery, the lightweight large pull using square steel pipe is adopted (for example, refer to patent documents 1 and patent documents 2 grade).

特許文献１及び特許文献２記載の大引は、長手方向の両端部分が大引受に支持され上面に根太が載置される角パイプと、この角パイプの下方において角パイプに沿って延在する補強パイプと、角パイプと補強パイプとを連結する複数の連結板とを備えている。角パイプには、正方形断面の角形鋼管（例えば、片の長さが６０ｍｍ〜１００ｍｍ程度、全長が９００ｍｍ〜１５００ｍｍ程度）が用いられ、車輌や重機が通行する際等の構台に掛かる各種の荷重に耐えうるように、補強パイプによって補強されている。なお、補強パイプには、支持部の角形鋼管よりも片の長さも全長も短い角形鋼管や円形鋼管が採用されている。このように構成された特許文献１及び特許文献２記載の大引は、重量が百数十ｋｇ程度となるＨ型鋼と比べ格段に軽量（例えば、数ｋｇ〜十数ｋｇ程度）となり、人手によって運搬や組立を行うことができる。   The girder described in Patent Document 1 and Patent Document 2 extends along the square pipe below the square pipe and the square pipe on which both ends in the longitudinal direction are supported by the large bearing and the joist is mounted on the upper surface A reinforcing pipe and a plurality of connecting plates for connecting the square pipe and the reinforcing pipe are provided. For square pipes, square steel pipes of square cross section (for example, piece length of about 60 mm to 100 mm, total length of about 900 mm to 1500 mm) are used, and various loads applied to a stand when vehicles or heavy machinery pass by It is reinforced by the reinforcement pipe so that it can endure. In addition, square steel pipe and circular steel pipe which are shorter in the length and length of the piece than the square steel pipe of the support portion are adopted as the reinforcing pipe. The large pulls described in Patent Document 1 and Patent Document 2 configured in this manner are extremely lightweight (for example, about several kg to about several tens kg) compared to H-type steel with a weight of about one hundred tens of kg. It can be carried and assembled.

特開２０１４−２３７９３０号公報JP, 2014-237930, A 特開２０１６−０２３４１０号公報JP, 2016-023410, A

しかしながら、構台における、斜面と水平面との接続部分において、隣合う床板の端部間に隙間や段差が生じやすい。また、車高が低い一般車輌の通行等を考慮し、傾斜角度が異なる複数の斜面によって斜面全体を形成する態様を採用する場合にも、傾斜角度が異なる複数の斜面の接続部分において、隣り合う床板の端部間に隙間や段差が生じる場合がある。これらのように、隣り合う床板の端部間に隙間や段差が生じると、床板の端部を支持する角パイプの端部部分に大きな荷重が掛かりやすい。このため、特許文献１及び特許文献２記載の大引では、大型のトラックや重機等が通行すると、その荷重によって角パイプの端部部分が潰れてしまう虞がある。ここで、角パイプの両端部分は、大引受に支持される部分であり、角パイプの下方から補強パイプによって補強することは難しい。また、角パイプを大型化したり厚肉にして強度を向上させる態様では、重量が大幅に増加してしまい、人手によって運搬や組立を行うことが困難になる虞がある。   However, in the connection portion between the slope and the horizontal surface in the gantry, a gap or a step is likely to occur between the end portions of the adjacent floor plates. In addition, even in the case of adopting an aspect in which the entire slope is formed by a plurality of slopes with different inclination angles in consideration of passing of a general vehicle with a low vehicle height, etc. There may be gaps or steps between the ends of the floorboards. As described above, when a gap or a step is generated between the end portions of adjacent floor plates, a large load is likely to be applied to the end portion of the square pipe that supports the end portions of the floor plates. For this reason, in the case of large pulls described in Patent Document 1 and Patent Document 2, there is a possibility that the end portion of the square pipe may be crushed by the load when a large truck, heavy machine or the like passes. Here, both end portions of the square pipe are portions supported by the large bearing, and it is difficult to reinforce the reinforcing pipe from below the square pipe. Further, in the aspect of increasing the strength by increasing the size or thickness of the square pipe, the weight is significantly increased, which may make it difficult to carry and assemble manually.

本発明は上記事情に鑑み、重量の増加を抑えつつ、強度を向上させることができる構台用大引を提供することを目的とする。   SUMMARY OF THE INVENTION In view of the above-described circumstances, the present invention has an object to provide a stand for a gantry which can improve its strength while suppressing an increase in weight.

上記目的を解決する本発明の構台用大引は、根太を介して床板を支持する構台用大引において、
上壁、下壁及び左右一対の側壁を備えた角筒状の本体を有し、長手方向の両端部分が大引受に支持されると共に、該上壁に前記根太が載置される支持部と、
前記支持部の下方において該支持部に沿って延在する補強部と、
前記下壁と前記補強部とを連結する複数の連結板とを備え、
前記支持部は、前記長手方向と直交する幅方向の中央部分に立設し、全長に亘って前記上壁と前記下壁とを連結する補強リブを有するものであることを特徴とする。 In order to solve the above-mentioned object, a gantry for a gantry according to the present invention is a gantry for a gantry for supporting a floor board through a joist,
A support portion having an angular cylindrical main body with an upper wall, a lower wall and a pair of left and right side walls, both end portions in the longitudinal direction being supported by a large support, and the joist being mounted on the upper wall ,
A reinforcement extending along the support below the support;
And a plurality of connecting plates connecting the lower wall and the reinforcing portion,
The supporting portion is characterized by standing at a central portion in the width direction orthogonal to the longitudinal direction, and including a reinforcing rib connecting the upper wall and the lower wall over the entire length.

ここで、前記支持部は一体形成されたものであってもよいし、別体の部材を溶接等で一体化したものであってもよい。また、前記補強部は、角形鋼管であってもよいし、円形鋼管であってもよい。   Here, the support portion may be integrally formed, or separate members may be integrated by welding or the like. The reinforcing portion may be a square steel pipe or a circular steel pipe.

本発明の構台用大引によれば、全長に亘って前記上壁と前記下壁とを連結する前記補強リブによって、全長に亘って前記支持部の強度が向上する。このため、斜面と水平面との接続部分等、前記床板の端部間に隙間や段差が生じて該支持部の端部部分に大きな荷重が掛かっても、潰れてしまうといった不具合を防ぐことが可能になる。また、前記補強リブ分の重量が増加するだけであり、前記支持部を大型化したり厚肉にしたりして強度を向上させる態様に比べ、重量の増加を抑えることができる。   According to the table puller of the present invention, the strength of the support portion is improved over the entire length by the reinforcing rib connecting the upper wall and the lower wall over the entire length. For this reason, it is possible to prevent a problem such as crushing even if a large load is applied to the end portion of the support portion due to a gap or a step between the end portions of the floor plate such as a connection portion between a slope and a horizontal surface. become. In addition, the weight of the reinforcing rib is only increased, and the increase in weight can be suppressed as compared with the embodiment in which the strength is improved by increasing the size or thickness of the support portion.

また、本発明の構台用大引において、前記複数の連結板は、前記長手方向に沿った姿勢で該長手方向に間隔を空けて設けられ、該複数の連結板それぞれは、前記補強リブの真下に位置するものであってもよい。   Further, in the girder for a gantry according to the present invention, the plurality of connection plates are provided at intervals in the longitudinal direction in a posture along the longitudinal direction, and each of the plurality of connection plates is directly below the reinforcing rib. It may be located in

ここで、前記複数の連結板は、鋼板であってもよい。また、前記複数の連結板ぞれぞれは、前記長手方向を水平とした場合に、鉛直方向に延在するものであってもよい。さらに、前記複数の連結板の全部又は一部に、トラス構造を採用してもよい。   Here, the plurality of connection plates may be steel plates. Further, each of the plurality of connecting plates may extend in the vertical direction when the longitudinal direction is horizontal. Furthermore, a truss structure may be adopted for all or part of the plurality of connecting plates.

前記複数の連結板それぞれが、前記補強リブの真下に位置する態様を採用すれば、前記構台用大引を長手方向に見て、前記補強リブと該複数の連結板とが、前記下壁を介して鉛直方向に揃った状態になる。このため、前記補強リブによる補強効果と、前記複数の連結板によって連結された前記補強部による補強効果とが互いに高められ、前記支持部の強度をより向上させることができる。   If each of the plurality of connecting plates is positioned directly below the reinforcing rib, the reinforcing rib and the plurality of connecting plates can be used to view the lower wall, as viewed from the large pull for the gantry in the longitudinal direction. It will be in the state of being aligned in the vertical direction. For this reason, the reinforcing effect by the reinforcing rib and the reinforcing effect by the reinforcing portion connected by the plurality of connection plates can be mutually enhanced, and the strength of the support portion can be further improved.

さらに、本発明の構台用大引において、前記支持部は、一対の角パイプそれぞれの側片どうしを前記幅方向に接合したものからなり、
前記補強リブは、接合した一対の前記側片からなるものである態様が好ましい。 Further, in the girder for a gantry according to the present invention, the support portion is formed by joining side pieces of a pair of square pipes in the width direction,
The aspect in which the said reinforcement rib consists of a pair of said joined side piece is preferable.

ここで、前記一対の角パイプそれぞれは、長方形断面の角形鋼管からなり、接合されると、外形形状が正方形断面の前記支持部を構成するものであってもよい。   Here, each of the pair of square pipes may be a square steel pipe having a rectangular cross section, and when joined, the outer shape may constitute the support section having a square cross section.

前記支持部を、前記一対の角パイプを接合することで構成すれば、接合した一対の前記側片によって前記補強リブを容易に形成することができる。また、前記補強リブが、一対の前記側片によって構成されて厚肉になり、該補強リブによる補強効果を向上させることができる。   If the said support part is comprised by joining a pair of said square pipes, the said reinforcing rib can be easily formed by a pair of said joined side piece. Moreover, the said reinforcement rib can be comprised by a pair of said side piece, it becomes thick, and the reinforcement effect by this reinforcement rib can be improved.

またさらに、本発明の構台用大引において、前記一対の角パイプは、重ねられた一対の前記側片の、上端部分と下端部分が溶接されて接合されたものであり、
前記複数の連結板は、前記下端部分の溶接と併せて該下端部分に溶接されるものである態様も好ましい態様の一つである。 Still further, in the girder for gantry according to the present invention, the pair of square pipes are obtained by welding upper end portions and lower end portions of the pair of overlapped side pieces to be joined.
An embodiment in which the plurality of connecting plates are welded to the lower end portion in combination with the welding of the lower end portion is also one of the preferable embodiments.

前記複数の連結板を、前記下端部分と併せて一度に溶接すれば、溶接作業が容易になる。   Welding the plurality of connecting plates together with the lower end portion at one time facilitates the welding operation.

本発明によれば、重量の増加を抑えつつ、強度を向上させることができる構台用大引を提供することことができる。   According to the present invention, it is possible to provide a stand for a gantry which can improve its strength while suppressing an increase in weight.

本発明の構台用大引を適用した構台を示す図である。It is a figure which shows the gantry which applied the Oiwaki for gantrys of this invention. 図１における、二点鎖線の楕円で囲んだＡ部を拡大して示す図である。It is a figure which expands and shows A part enclosed with the ellipse of the dashed-two dotted line in FIG. 図１及び図２に示す大引を示す図である。It is a figure which shows the giraffe shown in FIG.1 and FIG.2. 図３に示す大引について、特徴部分である支持部を実線で示し、その他の部分を破線で示す図である。It is a figure which shows the support part which is a characteristic part by a continuous line, and shows the other part by a broken line about Oiiki shown in FIG. （ａ）は、図３（ｃ）に示す大引の右側面図を拡大して示す図であり、（ｂ）は、（ａ）に示す大引の製造工程の一例を示す説明図である。(A) is a figure which expands and shows the right side view of the large draw shown in FIG.3 (c), (b) is explanatory drawing which shows an example of the manufacturing process of the large draw shown to (a). . 図５（ｂ）に示す工程によって製造した大引について、一対の角形鋼管の接合部分を実線で示す図である。It is a figure which shows the junction part of a pair of square steel pipe about the giraffe manufactured by the process shown in FIG.5 (b) with a continuous line.

以下、図面を参照して本発明の実施の形態を説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は、本発明の構台用大引（大引１０）を適用した構台９を示す図である。図１に示すように、構台９は、傾斜した床面（斜面Ｓ）と水平な床面（水平面Ｌ）を有しており、図では、一般車輌Ｃが斜面Ｓを水平面Ｌに向けて通行している様子を概念的に示している。   FIG. 1 is a view showing a gantry 9 to which a gantry for a gantry according to the present invention (a drawer 10) is applied. As shown in FIG. 1, the gantry 9 has an inclined floor surface (slope S) and a horizontal floor surface (horizontal surface L). In the figure, a general vehicle C passes the slope S toward the horizontal surface L and passes It shows conceptually how you are doing.

構台９は、左右方法及び前後方向（紙面と直交する方向）に間隔を空けて立設した複数の支柱９１と、隣り合う支柱９１間を連結する水平材９２と、所定の水平材９２どうしを連結するブレース材９３とを有している。また、支柱９１の上端には、大引受９４が取り付けられている。なお、支柱９１が前後方向に間隔を空けて立設した様子の図は省略しているが、左右方向と同様にして、水平材９２、ブレース材９３及び大引受９４が設けられている。   The gantry 9 includes a plurality of columns 91 erected at intervals in the left-right direction and the front-rear direction (direction orthogonal to the page), horizontal members 92 connecting adjacent columns 91, and predetermined horizontal members 92 And a brace member 93 to be connected. Further, a large bearing 94 is attached to the upper end of the support 91. A horizontal member 92, a brace member 93, and a large support 94 are provided in the same manner as in the left-right direction, although illustration of the columns 91 standing upright at an interval in the front-rear direction is omitted.

図２は、図１における、二点鎖線の楕円で囲んだＡ部を拡大して示す図である。   FIG. 2 is an enlarged view of a portion A surrounded by a double-dotted chain ellipse in FIG.

図１及び図２に示すように、隣り合う大引受９４間に、左右方向に延在した大引１０が、その両端部分を大引受９４に支持された状態で掛け渡されている。大引１０には、大引１０の長手方向（左右方向）に所定の間隔（例えば４００ｍｍ〜６００ｍｍ間隔）を空けて、角パイプからなる根太９５が前後方向に延在した状態で掛け渡されている。具体的には、根太９５に設けられたピン（不図示）が、詳しくは後述する、大引１０の支持部３における上壁３１１の孔（不図示）に差し込まれた状態で根太９５が上壁３１１に載置され、番線等で固定されている。また、根太９５には、床面（斜面Ｓ及び水平面Ｌ）を構成する床板９６が左右方向に延在した姿勢で設置されている。なお、図１及び図２では、図面を簡略するため、手摺柱や手摺、幅木等は省略している。また、これらの部材それぞれは、人手によって運搬や組立を行うことができる重量のものが採用されている。   As shown in FIG. 1 and FIG. 2, a large pull 10 extending in the left-right direction is bridged between the adjacent large bearings 94 with the both ends supported by the large bearings 94. In the large pull 10, a fixed length 95 (eg, 400 mm to 600 mm) is provided in the longitudinal direction (left and right direction) of the large pull 10, and a joist 95 made of a square pipe is extended in the front and rear direction. There is. Specifically, in a state where a pin (not shown) provided at the joist 95 is inserted into a hole (not shown) of the upper wall 311 in the support portion 3 of the large pull 10 described later in detail It is mounted on the wall 311 and fixed by a number line or the like. Further, at the joists 95, a floor plate 96 that constitutes a floor surface (the slope S and the horizontal surface L) is installed in a posture extending in the left-right direction. In addition, in FIG.1 and FIG.2, in order to simplify drawing, a handrail pillar, a handrail, a baseboard etc. are abbreviate | omitted. Also, each of these members is of a weight that can be carried and assembled manually.

大引１０は、根太９５を介して床板９６を支持するものであり、床板９６によって構成された床面を車輌や重機が通行した際の荷重が、大引１０の支持部３に掛かる。このため、支持部３は、鋼板からなる複数の連結板５０（鉛直連結板５１，トラス連結板５２）によって連結された補強パイプ７によって補強されている。この補強パイプ７は、補強部の一例に相当する。   The large pull 10 supports the floor plate 96 via the joists 95, and a load when a vehicle or heavy machinery passes through the floor surface constituted by the floor plate 96 is applied to the support portion 3 of the large pull 10. For this reason, the support part 3 is reinforced by the reinforcement pipe 7 connected by the several connection board 50 (vertical connection board 51, truss connection board 52) which consists of steel plates. The reinforcing pipe 7 corresponds to an example of a reinforcing portion.

しかしながら、図２の両矢印で示すように、斜面Ｓと水平面Ｌとの接続部分において、隣り合う床板９６の端部間に隙間や段差が生じやすい。このため、車輌のタイヤＴを一点鎖線で概念的に示すように、斜面Ｓと水平面Ｌとの接続部分を車輌等が通行すると、大引受９４に支持された、支持部３の端部部分に大きな荷重が掛かりやすい。さらに、図１に示すように、車高が低い一般車輌Ｃの通行等を考慮し、傾斜角度が異なる複数の斜面によって斜面Ｓ全体を形成する態様を採用する場合にも、一点鎖線の円で囲んだＢ部のように、傾斜角度が異なる斜面の接続部分において、隣り合う床板９６の端部間に隙間や段差が生じ、支持部３の端部部分に大きな荷重が掛かる場合がある。支持部３の端部部分は、大引受９４に支持される部分であり、補強パイプ７によって補強することが難しい。このため、本発明の大引１０では、補強パイプ７の他に支持部３を補強する構成を採用し、斜面Ｓと水平面Ｌとの接続部分等において、支持部３の端部部分に大きな荷重が掛かっても、その荷重によって支持部３の端部部分が潰れてしまうといった不具合を防止する工夫がなされている。   However, as indicated by the double arrows in FIG. 2, in the connection portion between the slope S and the horizontal surface L, a gap or a step is likely to occur between the end portions of the adjacent floor plates 96. For this reason, as the tire T of the vehicle is conceptually shown by an alternate long and short dash line, when the vehicle or the like passes the connecting portion between the slope S and the horizontal surface L, the end portion of the support portion 3 supported by the large bearing 94 A large load is likely to be applied Furthermore, as shown in FIG. 1, even in the case where the entire slope S is formed by a plurality of slopes having different inclination angles in consideration of the passage of a general vehicle C having a low vehicle height, etc. As in the enclosed portion B, a gap or a step may be generated between the end portions of the adjacent floor plates 96 at the connection portion of slopes having different inclination angles, and a large load may be applied to the end portion of the support portion 3. The end portion of the support portion 3 is a portion supported by the large bearing 94 and is difficult to be reinforced by the reinforcing pipe 7. For this reason, in the large pull 10 according to the present invention, a configuration in which the support portion 3 is reinforced in addition to the reinforcing pipe 7 is adopted, and a large load is applied to the end portion of the support portion 3 at the connection portion between the slope S and the horizontal surface L. Even if the load is applied, it is devised to prevent such a problem that the end portion of the support portion 3 is crushed by the load.

図３は、図１及び図２に示す大引１０を示す図である。図３（ａ）は大引１０の平面図であり、同図（ｂ）は大引１０の正面図であり、同図（ｃ）は大引１０の右側面図であり、同図（ｄ）は大引１０の底面図である。なお、図３では、大引１０の背面図は、大引１０の正面図と同一形であるため省略しており、大引１０の左側面図は、大引１０の右側面図と同一形であるため省略している。また、図４及び図６においても同様に、背面図と左側面図を省略している。   FIG. 3 is a view showing the gauze 10 shown in FIGS. 1 and 2. 3 (a) is a plan view of the large pull 10, FIG. 3 (b) is a front view of the large pull 10, and FIG. 3 (c) is a right side view of the large pull 10. ) Is a bottom view of the daiki 10. In FIG. 3, the rear view of the large pull 10 is omitted because it is identical to the front view of the large pull 10, and the left side view of the large pull 10 is the same as the right side view of the large pull 10. It is omitted because it is. Similarly, in FIGS. 4 and 6, the rear view and the left side view are omitted.

図３に示すように、大引１０は、支持部３と、複数の連結板５０と、補強パイプ７とを備えている。支持部３は、本体３１と補強リブ３２とを有している。本体３１は、片の長さが等しい、上壁３１１、下壁３１３及び左右一対の側壁３１２を備えた、正方形断面の角筒状のものである。補強リブ３２は、大引１０の長手方向と直交する幅方向（図３（ｃ）の左右方向）の中央部分に立設し、全長に亘って上壁３１１と下壁３１３とを連結するものである。なお、図３（ａ）及び同図（ｄ）では、補強リブ３２を破線で示している。   As shown in FIG. 3, the large pull 10 includes a support portion 3, a plurality of connection plates 50, and a reinforcing pipe 7. The support portion 3 has a main body 31 and a reinforcing rib 32. The main body 31 is a square tube of square cross section provided with an upper wall 311, a lower wall 313, and a pair of left and right side walls 312, which are equal in piece length. The reinforcing rib 32 is erected at a central portion in the width direction (left and right direction in FIG. 3C) orthogonal to the longitudinal direction of the large pull 10, and connects the upper wall 311 and the lower wall 313 over the entire length It is. In FIG. 3A and FIG. 3D, the reinforcing rib 32 is indicated by a broken line.

本実施形態の補強パイプ７には、支持部３の本体３１と比べて、片の長さも全長も短い角形鋼管が採用され、支持部３の下方であって、大引受９４に支持される（図２参照）、支持部３の両端部分を除いた中央側に位置している。なお、補強パイプ７には円形鋼管を用いてもよく、また、パイプではなく中実角棒や中実丸棒を補強部としてもよい。   In the reinforcing pipe 7 of the present embodiment, a square steel pipe whose length and length of the piece are shorter than that of the main body 31 of the support portion 3 is adopted, and is supported by the large support 94 below the support portion 3 ( 2), it is located on the center side except for both end portions of the support portion 3. In addition, a circular steel pipe may be used for the reinforcement pipe 7, and not a pipe but a solid square bar or a solid round bar may be used as a reinforcement portion.

複数の連結板５０は、本体３１の下壁３１３と補強パイプ７とを連結するものである。本実施形態の複数の連結板５０それぞれは、同じ板厚の鋼板によって構成され、大引１０の長手方向に沿った姿勢で、大引１０の長手方向に間隔を空けて設けられている。また、複数の連結板５０は、補強パイプ７の両端部分を連結する、鉛直方向に延在した一対の鉛直連結板５１と、傾いた姿勢の複数（図では１０個）のトラス連結板５２からなり、複数のトラス連結板５２によってトラス構造が採用されている。なお、複数の連結板５０は、全て鉛直連結板５１で構成してもよいし、全てトラス連結板５２で構成してもよい。   The plurality of connection plates 50 connect the lower wall 313 of the main body 31 and the reinforcing pipe 7. Each of the plurality of connecting plates 50 of the present embodiment is formed of a steel plate having the same thickness, and is provided at an interval in the longitudinal direction of the large pull 10 in a posture along the longitudinal direction of the large pull 10. Further, the plurality of connecting plates 50 connect the both end portions of the reinforcing pipe 7 from the pair of vertical connecting plates 51 extending in the vertical direction and the plurality (10 in the drawing) of the truss connecting plates 52 in an inclined posture. The truss structure is adopted by the plurality of truss connecting plates 52. The plurality of connection plates 50 may be all configured by the vertical connection plate 51 or may be entirely configured by the truss connection plate 52.

図４は、図３に示す大引１０について、特徴部分である支持部３を実線で示し、その他の部分を破線で示す図である。図４（ａ）は大引１０の平面図であり、同図（ｂ）は大引１０の正面図であり、同図（ｃ）は大引１０の右側面図であり、同図（ｄ）は大引１０の底面図である。   FIG. 4 is a view showing the support portion 3 which is a characteristic portion as a solid line and the other part as a broken line in the large pull 10 shown in FIG. FIG. 4 (a) is a plan view of the large pull 10, FIG. 4 (b) is a front view of the large pull 10, and FIG. 4 (c) is a right side view of the large pull 10. ) Is a bottom view of the daiki 10.

図５（ａ）は、図３（ｃ）に示す大引１０の右側面図を拡大して示す図である。   Fig.5 (a) is a figure which expands and shows the right side view of the large pull 10 shown in FIG.3 (c).

図５（ａ）に示すように、支持部３は、大引１０の長手方向と直交する幅方向の中央部分に立設した補強リブ３２を有している。この補強リブ３２は、図３（ａ）及び同図（ｄ）に示すように、全長に亘って上壁３１１と下壁３１３とを連結している。このため、支持部３は、全長に亘って補強リブ３２によって補強されている。この結果、図５（ａ）の下向きの矢印で示すように、斜面Ｓと水平面Ｌとの接続部分等において、支持部３の端部部分に大きな荷重が掛かっても、その荷重によって支持部３の端部部分が潰れてしまうといった不具合を防止することが可能になる。なお、本実施形態では、補強リブ３２の肉厚が、本体３１の肉厚の２倍程度に設定され、支持部３の補強効果をより向上させる構成が採用されている。   As shown in FIG. 5A, the support portion 3 has a reinforcing rib 32 erected at the central portion in the width direction orthogonal to the longitudinal direction of the large pull 10. As shown in FIG. As shown in FIG. 3A and FIG. 3D, the reinforcing rib 32 connects the upper wall 311 and the lower wall 313 over the entire length. For this reason, the support part 3 is reinforced by the reinforcing rib 32 over the entire length. As a result, as shown by the downward arrow in FIG. 5 (a), even if a large load is applied to the end portion of the support portion 3 at the connection portion between the slope S and the horizontal surface L, the support portion 3 It is possible to prevent such a defect that the end portion of the is crushed. In the present embodiment, the thickness of the reinforcing rib 32 is set to about twice the thickness of the main body 31, and a configuration for further improving the reinforcing effect of the support portion 3 is adopted.

また、上述した特許文献１及び特許文献２記載の従来の大引と比較し、重量の増加は、実質的に補強リブ３２分に抑えられ、人手による運搬や組立を行うことができる。さらに、大引１０を長手方向に見て、図では二点鎖線で示すように、補強リブ３２と、複数の連結板５０（鉛直連結板５１およびトラス連結板５２）と、補強パイプ７の中心部分とが、下壁３１３を介して鉛直方向に揃った状態になる。すなわち、複数の連結板５０それぞれは、補強リブ３２の真下に位置している。このため、補強リブ３２による補強効果と、複数の連結板５０によって連結された補強パイプ７による補強効果とが互いに高められ、支持部３の強度をより向上させることができる。   In addition, compared with the conventional girder described in Patent Document 1 and Patent Document 2 described above, the increase in weight is substantially suppressed to 32 minutes for the reinforcing rib, and manual transportation and assembly can be performed. Furthermore, when the large pull 10 is viewed in the longitudinal direction, as shown by a two-dot chain line in the figure, the reinforcing rib 32, the plurality of connecting plates 50 (vertical connecting plate 51 and truss connecting plate 52), and the center of the reinforcing pipe 7 The parts are aligned in the vertical direction via the lower wall 313. That is, each of the plurality of connection plates 50 is located directly below the reinforcing rib 32. For this reason, the reinforcing effect by the reinforcing rib 32 and the reinforcing effect by the reinforcing pipe 7 connected by the plurality of connection plates 50 can be mutually enhanced, and the strength of the support portion 3 can be further improved.

図５（ｂ）は、同図（ａ）に示す大引１０の製造工程の一例を示す説明図である。   FIG.5 (b) is explanatory drawing which shows an example of the manufacturing process of Oyagi 10 shown to the figure (a).

図５（ｂ）に示すように、本実施形態の大引１０は、支持部３を構成する、長方形断面の一対の角形鋼管４，４と、複数の連結板５０と、補強パイプ７とが接合されて構成される。一対の角形鋼管４，４それぞれは、片の長さが等しい上辺４１及び下辺４３と、片の長さが、上辺４１及び下辺４３の約１／２の、一対の側片４２とを有するものであり、一点鎖線示すように、一方の側片４２どうしが幅方向に重ねられた状態で、上端部分と下端部分それぞれが溶接されて一体化（接合）される。これにより、外形形状が正方形断面の支持部３が形成されるとともに、接合された一対の側片４２，４２によって、補強リブ３２が形成される。また、一対の角形鋼管４，４の下端部分の溶接と併せて、複数の連結板５０の上端部分も一緒に溶接すれば、溶接作業を簡略化することができる。なお、複数の連結板５０の下端部分には、補強パイプ７が溶接される。   As shown in FIG. 5 (b), the large pull 10 according to this embodiment includes a pair of square steel pipes 4 and 4 of rectangular cross section, a plurality of connection plates 50, and a reinforcement pipe 7 which constitute the support portion 3. It is joined and constituted. Each of the pair of square steel pipes 4 and 4 has an upper side 41 and a lower side 43 having equal lengths, and a pair of side pieces 42 whose length is about 1/2 of the upper side 41 and the lower side 43 The upper end portion and the lower end portion are respectively welded and integrated (joined) in a state in which the one side pieces 42 are overlapped in the width direction, as indicated by an alternate long and short dash line. Thus, the support portion 3 having a square cross-sectional shape is formed, and the reinforcing rib 32 is formed by the pair of side pieces 42 and 42 joined. Further, if the upper end portions of the plurality of connecting plates 50 are also welded together in combination with the welding of the lower end portions of the pair of square steel pipes 4, 4, the welding operation can be simplified. The reinforcement pipe 7 is welded to the lower end portions of the plurality of connection plates 50.

図６は、図５（ｂ）に示す工程によって製造した大引１０について、一対の角形鋼管４，４の接合部分を実線で示す図である。図６（ａ）は大引１０の平面図であり、同図（ｂ）は大引１０の正面図であり、同図（ｃ）は大引１０の右側面図であり、同図（ｄ）は大引１０の底面図である。   FIG. 6 is a view showing a joint portion of a pair of square steel pipes 4, 4 in a solid line in the large draw 10 manufactured by the process shown in FIG. 5 (b). 6 (a) is a plan view of the large pull 10, FIG. 6 (b) is a front view of the large pull 10, and FIG. 6 (c) is a right side view of the large pull 10. ) Is a bottom view of the daiki 10.

本発明の大引１０によれば、重量の増加を抑えつつ、強度を向上させることができる。   According to the girder 10 of the present invention, the strength can be improved while suppressing an increase in weight.

本発明は前述の実施形態に限定されるものではなく、特許請求の範囲に記載した範囲で種々の変更を行うことができる。例えば、支持部３は、一対の角形鋼管４，４を接合する態様に限定されるものではなく、一体に形成してもよい。また、大引１０の素材は鋼材に限定されるものではなく、例えば、アルミニウム合金製のものとしてもよい。   The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the claims. For example, the support part 3 is not limited to the aspect which joins a pair of square steel pipes 4 and 4, You may form integrally. Moreover, the raw material of the large pull 10 is not limited to steel materials, For example, it is good also as a thing made from aluminum alloy.

１０ 大引
３ 支持部
３１ 本体
３１１ 上壁
３１２ 側壁
３１３ 下壁
３２ 補強リブ
４ 角形鋼管
４１ 上辺
４２ 側片
４３ 下辺
５ 連結部
５１ 鉛直連結板
５２ トラス連結板
７ 補強パイプ
９ 構台
９４ 大引受
９５ 根太
９６ 床板
Ｌ 水平面
Ｓ 斜面
Ｔ タイヤ DESCRIPTION OF SYMBOLS 10 large pull 3 support part 31 main body 311 upper wall 312 side wall 313 lower wall 32 reinforcement rib square steel pipe 41 upper side 42 side piece 43 lower side 5 connection part 51 vertical connection plate 52 truss connection plate 7 reinforcement pipe 9 frame 94 large pulling 95 thickness 96 floor board L horizontal surface S slope T tire

Claims (4)

根太を介して床板を支持する構台用大引において、
上壁、下壁及び左右一対の側壁を備えた角筒状の本体を有し、長手方向の両端部分が大引受に支持されると共に、該上壁に前記根太が載置される支持部と、
前記支持部の下方において該支持部に沿って延在する補強部と、
前記下壁と前記補強部とを連結する複数の連結板とを備え、
前記支持部は、前記長手方向と直交する幅方向の中央部分に立設し、全長に亘って前記上壁と前記下壁とを連結する補強リブを有するものであることを特徴とする構台用大引。 In the cabinet for supporting the floorboard through the joists,
A support portion having an angular cylindrical main body with an upper wall, a lower wall and a pair of left and right side walls, both end portions in the longitudinal direction being supported by a large support, and the joist being mounted on the upper wall ,
A reinforcement extending along the support below the support;
And a plurality of connecting plates connecting the lower wall and the reinforcing portion,
The support portion is erected at a central portion in the width direction orthogonal to the longitudinal direction, and has a reinforcing rib connecting the upper wall and the lower wall over the entire length. Ohiki. 前記複数の連結板は、前記長手方向に沿った姿勢で該長手方向に間隔を空けて設けられ、該複数の連結板それぞれは、前記補強リブの真下に位置するものであることを特徴とする請求項１記載の構台用大引。   The plurality of connection plates are spaced apart from each other in the longitudinal direction in a posture along the longitudinal direction, and each of the plurality of connection plates is located immediately below the reinforcing rib. A gantry for a gantry according to claim 1. 前記支持部は、一対の角パイプそれぞれの側片どうしを前記幅方向に接合したものからなり、
前記補強リブは、接合した一対の前記側片からなるものであることを特徴とする請求項１又は２記載の構台用大引。 The supporting portion is formed by joining the side pieces of a pair of square pipes in the width direction,
The large extension for a gantry according to claim 1 or 2, wherein the reinforcing rib is formed of a pair of the joined side pieces. 前記一対の角パイプは、重ねられた一対の前記側片の、上端部分と下端部分が溶接されて接合されたものであり、
前記複数の連結板は、前記下端部分の溶接と併せて該下端部分に溶接されるものであることを特徴とする請求項３記載の構台用大引。 The pair of square pipes are obtained by welding the upper end portion and the lower end portion of the overlapped pair of side pieces by welding.
The large pull for a gantry according to claim 3, wherein the plurality of connection plates are welded to the lower end portion together with the welding of the lower end portion.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110593099A (en) * 2019-08-12 2019-12-20 中铁十局集团第五工程有限公司 Bridge construction support bracket
JP2022083849A (en) * 2020-11-25 2022-06-06 株式会社タイセン工業 Connecting metal fitting

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