JP6852866B2 - Mounting aids and telescopic devices - Google Patents

Mounting aids and telescopic devices Download PDF

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JP6852866B2
JP6852866B2 JP2016153990A JP2016153990A JP6852866B2 JP 6852866 B2 JP6852866 B2 JP 6852866B2 JP 2016153990 A JP2016153990 A JP 2016153990A JP 2016153990 A JP2016153990 A JP 2016153990A JP 6852866 B2 JP6852866 B2 JP 6852866B2
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joint
main body
bridge
horizontal plate
plate portion
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JP2018021399A (en
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翼 近藤
翼 近藤
佳宏 宮城
佳宏 宮城
辻本　博文
博文 辻本
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Nitta Corp
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Description

本発明は、取付補助具及び伸縮装置に関するものである。 The present invention relates to a mounting aid and a telescopic device.

伸縮装置は、橋梁の種々の変位、主に環境における温度変化によって生じる橋桁の長さの変位を吸収するため、桁端部に設けられる。この伸縮装置は、桁端部間の平坦性を保つと共に、雨水などの浸透を防止する機能が求められている。 The telescopic device is provided at the end of the girder to absorb various displacements of the bridge, mainly displacement of the length of the bridge girder caused by temperature changes in the environment. This telescopic device is required to have a function of maintaining flatness between girder ends and preventing rainwater or the like from penetrating.

このような伸縮装置として、一対の継手と、継手間に設けられたシール層とを備えた技術が開示されている（例えば、特許文献１）。継手は、橋桁に露出する表面部と、当該表面部と一体に形成された腹板部とを有する。 As such an expansion / contraction device, a technique including a pair of joints and a seal layer provided between the joints is disclosed (for example, Patent Document 1). The joint has a surface portion exposed to the bridge girder and an abdominal plate portion integrally formed with the surface portion.

伸縮装置は、一対の継手間の距離がずれることがないように、桁端部に取り付ける必要がある。一対の継手に仮固定される一対のガイド部材と、継手の伸縮方向における相対位置を調節する伸縮手段とを備えた取付補助具が開示されている（例えば、特許文献２）。 The telescopic device needs to be attached to the girder end so that the distance between the pair of joints does not shift. A mounting aid including a pair of guide members temporarily fixed to a pair of joints and an expansion / contraction means for adjusting a relative position in the expansion / contraction direction of the joint is disclosed (for example, Patent Document 2).

特開２００４−１００１５０号公報Japanese Unexamined Patent Publication No. 2004-100150 特開２００６−５２６１０号公報Japanese Unexamined Patent Publication No. 2006-52610

しかしながら、上記特許文献２の取付補助具は、伸縮手段がガイド部材の厚さ方向の一方に配置されているので、伸縮手段によって生じる力が継手に対し、アンバランスとなる。このため上記取付補助具は、継手部間の隙間を調節する精度が低下してしまうという懸念がある。 However, in the mounting aid of Patent Document 2, since the expansion / contraction means is arranged on one side in the thickness direction of the guide member, the force generated by the expansion / contraction means is unbalanced with respect to the joint. Therefore, there is a concern that the mounting auxiliary tool may reduce the accuracy of adjusting the gap between the joint portions.

本発明は、継手間の隙間の長さを精度よく調節することができる取付補助具及び伸縮装置を提供することを目的とする。 An object of the present invention is to provide a mounting aid and an expansion / contraction device capable of accurately adjusting the length of a gap between joints.

本発明に係る取付補助具は、橋梁の桁端部に設けられ、表面部と、当該表面部と一体に形成された腹板部とを有する第１継手及び第２継手を備える伸縮装置用の取付補助具であって、前記第１継手に固定される第１本体と、前記第１本体と厚さ方向に重ねて、前記第２継手に固定される第２本体とを備え、前記第１本体は、前記表面部を横断するように配置される横板部と、前記横板部から前記腹板部に沿うように前記横板部の両端に一体に形成された第１脚部及び第２脚部を有し、前記第１脚部は一側表面に、前記第２脚部は他側表面に、それぞれナットと、当該ナットにねじ込まれたボルトとを有し、前記第１脚部のボルトの先端は前記第２本体の端部に接触し、前記第２脚部のボルトの先端は前記第２継手の側部に接触することを特徴とする。 The mounting aid according to the present invention is for a telescopic device provided at a girder end portion of a bridge and having a first joint and a second joint having a surface portion and an abdominal plate portion integrally formed with the surface portion. It is a mounting aid and includes a first main body fixed to the first joint and a second main body that overlaps the first main body in the thickness direction and is fixed to the second joint. The main body includes a horizontal plate portion arranged so as to cross the surface portion, and a first leg portion and a first leg portion integrally formed at both ends of the horizontal plate portion along the abdominal plate portion from the horizontal plate portion. The first leg portion has two legs, the first leg portion has a nut on one side surface, and the second leg portion has a nut and a bolt screwed into the nut on the other side surface. The tip of the bolt of the second leg is in contact with the end of the second main body, and the tip of the bolt of the second leg is in contact with the side of the second joint.

本発明に係る伸縮装置は、上記取付補助具が設けられていることを特徴とする。 The telescopic device according to the present invention is characterized in that the above-mentioned mounting aid is provided.

本発明によれば、第１継手に固定された第１本体の一側表面と他側表面とにおいて、第２継手に対し力が加わるので、第２継手に加わる力が一方に偏らないため、第１継手と第２継手間の隙間の長さを精度よく調節することができる。 According to the present invention, since a force is applied to the second joint on one side surface and the other side surface of the first main body fixed to the first joint, the force applied to the second joint is not biased to one side. The length of the gap between the first joint and the second joint can be adjusted with high accuracy.

本実施形態に係る取付補助具が設けられた伸縮装置の全体構成を示す斜視図である。It is a perspective view which shows the whole structure of the expansion / contraction device provided with the attachment assisting tool which concerns on this embodiment. 本実施形態に係る取付補助具が設けられた伸縮装置の縦断面図である。It is a vertical sectional view of the expansion / contraction device provided with the attachment assisting tool which concerns on this embodiment. 本実施形態に係る取付補助具が設けられた伸縮装置の全体構成を示す平面図である。It is a top view which shows the whole structure of the expansion / contraction device provided with the attachment assisting tool which concerns on this embodiment. 本実施形態に係る取付補助具が設けられた伸縮装置の使用状態を示す縦断面図であり、隙間を小さくした状態を示す図である。It is a vertical cross-sectional view which shows the use state of the telescopic device provided with the attachment assisting tool which concerns on this embodiment, and is the figure which shows the state which reduced the gap. 本実施形態に係る取付補助具が設けられた伸縮装置の使用状態を示す縦断面図であり、隙間を大きくした状態を示す図である。It is a vertical cross-sectional view which shows the use state of the telescopic device provided with the attachment assisting tool which concerns on this embodiment, and is the figure which shows the state which increased the gap. 変形例に係る取付補助具が設けられた伸縮装置の縦断面図である。It is a vertical sectional view of the expansion / contraction device provided with the attachment assisting tool which concerns on a modification.

以下、図面を参照して本発明の実施形態について詳細に説明する。図１に示す伸縮装置１０は、鋼製であって、橋桁の幅と同じ長さを有する第１継手１１及び第２継手１２と、第１継手１１及び第２継手１２の長手方向にそれぞれ複数設けられたアンカー部１３とを備える。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The expansion / contraction device 10 shown in FIG. 1 is made of steel and has a plurality of first joints 11 and second joints 12 having the same length as the width of the bridge girder and a plurality of first joints 11 and second joints 12 in the longitudinal direction. It is provided with an anchor portion 13 provided.

第１継手１１及び第２継手１２は、橋桁表面側に配置される表面部１４と、表面部１４と一体に形成された腹板部１６とを有する。表面部１４は、橋桁の幅方向（図中Ｙ方向）長さと同じ長さを有する略矩形状の板部材からなり、長手方向の一側面（以下、「先端」という）が相手側の表面部１４の先端と対向するように配置されている。 The first joint 11 and the second joint 12 have a surface portion 14 arranged on the surface side of the bridge girder and a sternum portion 16 formed integrally with the surface portion 14. The surface portion 14 is made of a substantially rectangular plate member having the same length as the width direction (Y direction in the drawing) of the bridge girder, and one side surface in the longitudinal direction (hereinafter, referred to as “tip”) is the surface portion on the mating side. It is arranged so as to face the tip of 14.

表面部１４の先端は、相手側へ向かって櫛歯状の凹凸が繰り返し形成されている。表面部１４の先端間には、隙間１８が形成されている。表面部１４の先端間に形成された隙間１８は、表面部１４の凹凸を組み合わせて形成されている。すなわち第１継手１１の表面部１４に形成された凹が、第２継手１２の表面部１４に形成された凸と対となっており、第１継手１１の表面部１４に形成された凸が、第２継手１２の表面部１４に形成された凹と対になっている。このように表面部１４に形成された凹凸を組み合わせることによって、表面部１４の先端間の隙間１８はジグザグ状に形成されている。 The tip of the surface portion 14 is repeatedly formed with comb-teeth-like irregularities toward the mating side. A gap 18 is formed between the tips of the surface portions 14. The gap 18 formed between the tips of the surface portion 14 is formed by combining the irregularities of the surface portion 14. That is, the concave portion formed on the surface portion 14 of the first joint 11 is paired with the convex formed on the surface portion 14 of the second joint 12, and the convex formed on the surface portion 14 of the first joint 11 is formed. , It is paired with the recess formed on the surface portion 14 of the second joint 12. By combining the irregularities formed on the surface portion 14 in this way, the gap 18 between the tips of the surface portion 14 is formed in a zigzag shape.

腹板部１６は、表面部１４の基端に一体形成されており、表面部１４に対し直角に設けられた板部材からなる。腹板部１６の外側表面には、アンカー部１３が設けられている。アンカー部１３は、略矩形状の板部材からなり、腹板部１６の表面から橋軸方向（図中Ｘ方向）に平行に突出するように設けられている。 The abdominal plate portion 16 is integrally formed at the base end of the surface portion 14, and is composed of a plate member provided at a right angle to the surface portion 14. An anchor portion 13 is provided on the outer surface of the abdominal plate portion 16. The anchor portion 13 is made of a substantially rectangular plate member, and is provided so as to project parallel to the surface of the abdominal plate portion 16 in the bridge axis direction (X direction in the drawing).

第１継手１１と第２継手１２間には、図示しないが、防塵層と、シール層と、バックアップ層などが配置されている。防塵層は、ＥＰＤＭフォームなど弾性を有する発泡体からなる。発泡体としては、連続気泡で構成されているだけでなく、独立気泡と連続気泡が混在していてもよい。 Although not shown, a dustproof layer, a seal layer, a backup layer, and the like are arranged between the first joint 11 and the second joint 12. The dustproof layer is made of an elastic foam such as EPDM foam. The foam is not only composed of open cells, but may also contain closed cells and open cells.

伸縮装置１０は、少なくとも１つ以上の取付補助具２０を備えている。取付補助具２０は、第１本体２２及び第２本体２４を有する。第１本体２２及び第２本体２４は、鋼製の板部材である。第１本体２２は、横板部２６と、前記横板部２６の両端に一体に形成された第１脚部２８及び第２脚部３０とを有する。横板部２６は、前記表面部１４上を橋軸方向に横断するように配置される。 The telescopic device 10 includes at least one or more mounting aids 20. The mounting aid 20 has a first main body 22 and a second main body 24. The first main body 22 and the second main body 24 are steel plate members. The first main body 22 has a horizontal plate portion 26, and a first leg portion 28 and a second leg portion 30 integrally formed at both ends of the horizontal plate portion 26. The horizontal plate portion 26 is arranged so as to cross the surface portion 14 in the bridge axis direction.

図２に示すように、第１脚部２８及び第２脚部３０は、前記横板部２６から前記腹板部１６に沿うように横板部２６に対し直角に形成されている。第１脚部２８は、内面２９において、溶接によって第１継手１１の側部３１に固定されている。第２脚部３０の内面３３と、第２継手１２の側部３５の間には、隙間３７が形成されている。 As shown in FIG. 2, the first leg portion 28 and the second leg portion 30 are formed at right angles to the horizontal plate portion 26 from the horizontal plate portion 26 along the abdominal plate portion 16. The first leg portion 28 is fixed to the side portion 31 of the first joint 11 by welding on the inner surface 29. A gap 37 is formed between the inner surface 33 of the second leg portion 30 and the side portion 35 of the second joint 12.

図３に示すように、第１脚部２８の一側表面、及び第２脚部３０の他側表面に、それぞれナット３２，３６が溶接によって固定されている。当該ナット３２，３６には、ボルトがそれぞれねじ込まれている。第１脚部２８の一側表面のナット３２にねじ込まれるボルトを第１ボルト３４、第２脚部３０の他側表面のナット３６にねじ込まれるボルトを第２ボルト３８と呼ぶ。 As shown in FIG. 3, nuts 32 and 36 are fixed to one side surface of the first leg portion 28 and the other side surface of the second leg portion 30 by welding, respectively. Bolts are screwed into the nuts 32 and 36, respectively. The bolt screwed into the nut 32 on one side surface of the first leg portion 28 is called the first bolt 34, and the bolt screwed into the nut 36 on the other side surface of the second leg portion 30 is called the second bolt 38.

第２本体２４は、横板部４０と、横板部４０の一端に一体に形成された脚部４１とを有する。横板部４０は、前記表面部１４上を橋軸方向に横断するように配置される。横板部４０は、上端に前記第１本体２２へ向かって突出した上側返し部４２が形成されている。上側返し部４２は、横板部４０の上端を曲げて形成されている。 The second main body 24 has a horizontal plate portion 40 and a leg portion 41 integrally formed at one end of the horizontal plate portion 40. The horizontal plate portion 40 is arranged so as to cross the surface portion 14 in the bridge axis direction. The horizontal plate portion 40 is formed with an upper return portion 42 protruding toward the first main body 22 at the upper end. The upper return portion 42 is formed by bending the upper end of the horizontal plate portion 40.

脚部４１は、前記横板部４０から前記腹板部１６に沿うように横板部４０に対し直角に形成されている。第２本体２４は、脚部４１の内面４３において、溶接によって第２継手１２の側部３５に固定されている。 The leg portion 41 is formed from the horizontal plate portion 40 to the abdominal plate portion 16 at a right angle to the horizontal plate portion 40. The second main body 24 is fixed to the side portion 35 of the second joint 12 by welding on the inner surface 43 of the leg portion 41.

第１本体２２の横板部２６は、ボルト穴（図示しない）を有する。第２本体２４の横板部４０は、ボルト穴に対応した位置に長穴４５を有する。第１本体２２と第２本体２４は、横板部２６，４０同士を重ねた状態で、ボルト穴から長穴４５へ挿入されたボルト４４と、当該ボルト４４に締め込むナット４７とによって連結されている。 The horizontal plate portion 26 of the first main body 22 has a bolt hole (not shown). The horizontal plate portion 40 of the second main body 24 has an elongated hole 45 at a position corresponding to the bolt hole. The first main body 22 and the second main body 24 are connected by a bolt 44 inserted from a bolt hole into an elongated hole 45 and a nut 47 tightened to the bolt 44 in a state where the horizontal plate portions 26 and 40 are overlapped with each other. ing.

第１ボルト３４の先端は、第２本体２４の横板部４０の他端に接触している。第２ボルト３８の先端は、第２継手１２の側部３５に接触している。 The tip of the first bolt 34 is in contact with the other end of the horizontal plate portion 40 of the second main body 24. The tip of the second bolt 38 is in contact with the side portion 35 of the second joint 12.

第１継手１１と第２継手１２間の隙間１８の長さを調節する手順について説明する。第１継手１１と第２継手１２間の隙間１８を小さくする場合、まず第１ボルト３４を緩める。次いで、第２ボルト３８を締める。側部３５に先端が接触している第２ボルト３８によって、第２継手１２が第１継手１１に向かって押される。第１継手１１が第１本体２２の第１脚部２８に固定されているので、第１継手１１と第２継手１２間の隙間１８は小さくなる（図４）。 The procedure for adjusting the length of the gap 18 between the first joint 11 and the second joint 12 will be described. To reduce the gap 18 between the first joint 11 and the second joint 12, first loosen the first bolt 34. Then, the second bolt 38 is tightened. The second joint 12 is pushed toward the first joint 11 by the second bolt 38 whose tip is in contact with the side portion 35. Since the first joint 11 is fixed to the first leg 28 of the first main body 22, the gap 18 between the first joint 11 and the second joint 12 becomes smaller (FIG. 4).

第１継手１１と第２継手１２間の隙間１８を長くする場合、まず第２ボルト３８を緩める。次いで、第１ボルト３４を締める。横板部４０に先端が接触している第１ボルト３４によって、第２本体２４が第１継手１１から離れる方向へ押される。第２本体２４は第２継手１２に固定されているので、第２本体２４と共に第１継手１１から離れる方向へ押される。第２継手１２が第１継手１１から離れることにより、第１継手１１と第２継手１２間の隙間１８が長くなる（図５）。 To lengthen the gap 18 between the first joint 11 and the second joint 12, first loosen the second bolt 38. Next, the first bolt 34 is tightened. The second main body 24 is pushed away from the first joint 11 by the first bolt 34 whose tip is in contact with the horizontal plate portion 40. Since the second main body 24 is fixed to the second joint 12, it is pushed together with the second main body 24 in a direction away from the first joint 11. As the second joint 12 separates from the first joint 11, the gap 18 between the first joint 11 and the second joint 12 becomes longer (FIG. 5).

上記のように第１継手１１と第２継手１２間の隙間１８の長さが調節された状態で、ボルト４４をナット４７に締め込み、第１本体２２と第２本体２４を固定する。第１本体２２と第２本体２４を固定することにより、第１継手１１と第２継手１２間の隙間１８が調節された状態に保持される。 With the length of the gap 18 between the first joint 11 and the second joint 12 adjusted as described above, the bolt 44 is tightened to the nut 47 to fix the first main body 22 and the second main body 24. By fixing the first main body 22 and the second main body 24, the gap 18 between the first joint 11 and the second joint 12 is maintained in an adjusted state.

上記のように取付補助具２０によって第１継手１１と第２継手１２間の隙間１８の長さが調節された伸縮装置１０は、その長手方向を橋桁の幅方向に合わせ、橋桁の桁端部に固定される。設置現場において、取付補助具２０が設けられた伸縮装置１０は、アンカー部１３にスリングベルト（図示しない）を掛け回して吊り上げて、桁端部へ設置される。 The expansion / contraction device 10 in which the length of the gap 18 between the first joint 11 and the second joint 12 is adjusted by the mounting aid 20 as described above aligns its longitudinal direction with the width direction of the bridge girder, and the girder end portion of the bridge girder. Is fixed to. At the installation site, the telescopic device 10 provided with the mounting auxiliary tool 20 is installed at the girder end portion by hanging a sling belt (not shown) around the anchor portion 13 and lifting it.

アンカー部１３にスリングを掛け回して吊り上げた際、取付補助具２０には、第１本体２２と第２本体２４の連結箇所である横板部２６，４０に、曲げ応力が生じる。取付補助具２０は、第２本体２４の上側返し部４２が第１本体２２の横板部２６上端を支持すると共に、第１本体２２及び第２本体２４が、ボルト穴から長穴４５へ挿入されたボルト４４をナット４７に締め込むことで固定されている。このように構成された取付補助具２０は、アンカー部１３において吊り下げられ、曲げ応力が生じた場合でも、第１継手１１と第２継手１２の相対的な位置がずれることを防止することができる。 When the sling is hung around the anchor portion 13 and lifted, bending stress is generated in the horizontal plate portions 26 and 40, which are the connecting points of the first main body 22 and the second main body 24, in the mounting auxiliary tool 20. In the mounting aid 20, the upper return portion 42 of the second main body 24 supports the upper end of the horizontal plate portion 26 of the first main body 22, and the first main body 22 and the second main body 24 are inserted from the bolt holes into the elongated holes 45. The bolt 44 is fixed by tightening the bolt 44 to the nut 47. The mounting aid 20 configured in this way is suspended at the anchor portion 13 to prevent the relative positions of the first joint 11 and the second joint 12 from being displaced even when bending stress is generated. it can.

取付補助具２０は、伸縮装置１０が桁端部に設置された後、溶接箇所において切断され、伸縮装置１０から取り外される。取付補助具２０を取り外した後、桁端部にコンクリートが打設される。 After the telescopic device 10 is installed at the end of the girder, the mounting aid 20 is cut at the welded portion and removed from the telescopic device 10. After removing the mounting aid 20, concrete is placed at the end of the girder.

本実施形態に係る取付補助具２０は、第１継手１１に固定された第１本体２２の、一側表面に設けた第１ボルト３４と、他側表面に設けた第２ボルト３８により第２継手１２に対し力が加わる。したがって第２継手１２に加わる力が一方に偏らないため、第１継手１１と第２継手１２間の隙間１８の長さを精度よく調節することができる。 The mounting auxiliary tool 20 according to the present embodiment is provided with a second bolt 34 provided on one side surface of the first main body 22 fixed to the first joint 11 and a second bolt 38 provided on the other side surface. A force is applied to the joint 12. Therefore, since the force applied to the second joint 12 is not biased to one side, the length of the gap 18 between the first joint 11 and the second joint 12 can be adjusted accurately.

第１ボルト３４、第２ボルト３８、ボルト４４及びナット４７は、同じサイズとすることにより、１つの工具で、第１継手１１と第２継手１２間の隙間１８の長さを調節し、第１本体２２と第２本体２４を固定できるので、作業効率を向上することができる。 By making the first bolt 34, the second bolt 38, the bolt 44, and the nut 47 the same size, the length of the gap 18 between the first joint 11 and the second joint 12 can be adjusted with one tool. Since the 1 main body 22 and the 2nd main body 24 can be fixed, the work efficiency can be improved.

（変形例）
本発明は上記実施形態に限定されるものではなく、本発明の趣旨の範囲内で適宜変更することが可能である。 (Modification example)
The present invention is not limited to the above embodiment, and can be appropriately modified within the scope of the gist of the present invention.

上記実施形態の場合、取付補助具２０の横板部２６，４０は、第１継手１１及び第２継手１２の表面部１４に接触している場合について説明したが、本発明は、これに限らない。例えば、図６に示す取付補助具４９の第１本体４６は、第１脚部５０の先端に腹板部１６へ向かって突出した突出部５１を有し、当該突出部５１の先端において、溶接によって腹板部１６表面に固定されている。第２本体４８は、脚部５２の先端に腹板部１６へ向かって突出した突出部５３を有し、当該突出部５３の先端において溶接によって腹板部１６表面に固定されている。取付補助具４９の横板部２６，４０と、第１継手１１及び第２継手１２の表面部１４の間に、隙間５４が形成されている。取付補助具４９は、第１継手１１及び第２継手１２の表面部１４の間に、隙間５４を有することにより、第１継手１１と第２継手１２間の隙間１８の長さを調節する際に、横板部２６，４０が表面部１４を傷つけることを防止できる。上記実施形態の場合、上側返し部４２は、横板部４０の上端を曲げて形成されている場合について説明したが、本発明はこれに限らず、横板部の上端に溶接により固定してもよい。 In the case of the above embodiment, the case where the horizontal plate portions 26 and 40 of the mounting aid 20 are in contact with the surface portions 14 of the first joint 11 and the second joint 12 has been described, but the present invention is limited to this. Absent. For example, the first main body 46 of the mounting aid 49 shown in FIG. 6 has a protruding portion 51 protruding toward the abdominal plate 16 at the tip of the first leg 50, and is welded at the tip of the protruding portion 51. It is fixed to the surface of the abdominal plate portion 16 by. The second main body 48 has a protruding portion 53 protruding toward the abdominal plate 16 at the tip of the leg 52, and is fixed to the surface of the abdominal plate 16 by welding at the tip of the protruding portion 53. A gap 54 is formed between the horizontal plate portions 26 and 40 of the mounting aid 49 and the surface portions 14 of the first joint 11 and the second joint 12. When the mounting aid 49 has a gap 54 between the surface portions 14 of the first joint 11 and the second joint 12, the length of the gap 18 between the first joint 11 and the second joint 12 is adjusted. In addition, it is possible to prevent the horizontal plate portions 26 and 40 from damaging the surface portion 14. In the case of the above embodiment, the case where the upper barb portion 42 is formed by bending the upper end of the horizontal plate portion 40 has been described, but the present invention is not limited to this, and the upper barb portion 42 is fixed to the upper end of the horizontal plate portion by welding. May be good.

１０ 伸縮装置
１１ 第１継手
１２ 第２継手
１４ 表面部
１６ 腹板部
２０ 取付補助具
２２ 第１本体
２４ 第２本体
２６ 横板部
２８ 第１脚部
２９ 内面
３０ 第２脚部
３１ 側部
３２ ナット
３４ 第１ボルト（ボルト）
３５ 側部
３６ ナット
３８ 第２ボルト（ボルト）
４０ 横板部
４１ 脚部
４２ 上側返し部 10 Telescopic device 11 1st joint 12 2nd joint 14 Surface part 16 Abdominal plate part 20 Mounting aid 22 1st main body 24 2nd main body 26 Horizontal plate part 28 1st leg part 29 Inner surface 30 2nd leg part 31 Side part 32 Nut 34 1st bolt (bolt)
35 Side 36 Nut 38 2nd bolt (bolt)
40 Horizontal plate 41 Leg 42 Upper barb

Claims (3)

橋梁の桁端部に設けられ、橋桁の幅方向に延びる表面部と、前記橋桁の幅方向と直交する橋軸方向における前記表面部の基端に一体に形成された腹板部とを有する第１継手及び第２継手を備える伸縮装置用の取付補助具であって、
前記第１継手に固定される第１本体と、
前記第２継手に固定される第２本体と
を備え、
前記第１本体は、前記表面部を前記橋軸方向に横断するように配置される横板部と、前記横板部から前記腹板部に沿うように前記橋軸方向における前記横板部の両端に一体に形成された第１脚部及び第２脚部を有し、前記第１脚部において、前記橋軸方向における前記第１継手の側部に固定されており、
前記第２本体は、前記表面部を前記橋軸方向に横断するように配置される横板部と、前記横板部から前記腹板部に沿うように前記橋軸方向における前記横板部の一端に一体に形成された脚部を有し、前記脚部において、前記橋軸方向における前記第２継手の側部に固定されており、
前記第１本体と前記第２本体は、前記橋桁の幅方向に前記横板部同士を重ねた状態で連結され、
前記橋桁の幅方向における前記第１脚部の一側表面及び前記第２脚部の他側表面に、それぞれナットが前記橋軸方向に溶接によって固定されており、前記第１脚部の一側表面の前記ナットには第１ボルトが前記橋軸方向にねじ込まれ、前記第２脚部の他側表面の前記ナットには第２ボルトが前記橋軸方向にねじ込まれており、
前記第１ボルトの先端は前記橋軸方向における前記第２本体の前記横板部の他端に接触し、前記第２ボルトの先端は前記橋軸方向における前記第２継手の側部に接触する
ことを特徴とする取付補助具。 A third having a surface portion provided at the girder end portion of the bridge and extending in the width direction of the bridge girder and a sternum portion integrally formed with the base end of the surface portion in the bridge axis direction orthogonal to the width direction of the bridge girder. A mounting aid for a telescopic device equipped with a 1st joint and a 2nd joint.
A first body fixed to the first joint,
And a second body that is fixed to the front Stories second joint,
The first main body includes a horizontal plate portion arranged so as to cross the surface portion in the bridge axial direction, and the horizontal plate portion in the bridge axial direction from the horizontal plate portion to the abdominal plate portion. It has a first leg portion and a second leg portion integrally formed at both ends, and is fixed to the side portion of the first joint in the bridge axis direction in the first leg portion.
The second main body includes a horizontal plate portion arranged so as to cross the surface portion in the bridge axial direction, and the horizontal plate portion in the bridge axial direction from the horizontal plate portion to the abdominal plate portion. It has a leg portion integrally formed at one end, and is fixed to the side portion of the second joint in the bridge axis direction at the leg portion.
The first main body and the second main body are connected in a state where the horizontal plate portions are overlapped with each other in the width direction of the bridge girder.
On one side surface and the other side surface of the second leg of the first leg portion in the width direction of the bridge girder, is fixed by the nut respectively welded to the bridge axis, one side of the first leg A first bolt is screwed into the nut on the surface in the direction of the bridge axis, and a second bolt is screwed into the nut on the other side surface of the second leg in the direction of the bridge axis.
Tip of the first bolt is in contact with the other end of the horizontal plate portion of the second body in the bridge axis, the tip of the second bolt on the side of the second joint in the bridge axis A mounting aid characterized by contact. 前記第２本体は、前記横板部の上端に設けられ前記第１本体へ向かって突出した上側返し部を有することを特徴とする請求項１記載の取付補助具。 The mounting aid according to claim 1, wherein the second main body has an upper return portion that is provided at the upper end of the horizontal plate portion and projects toward the first main body. 橋桁の幅方向に延びる表面部と、前記橋桁の幅方向と直交する橋軸方向における前記表面部の基端に一体に形成された腹板部とを有する第１継手及び第２継手と、
前記腹板部の表面から前記橋軸方向に平行に突出するように設けられている複数のアンカー部と、
請求項２記載の取付補助具と
を備え、
前記第１本体の前記横板部の上端が前記上側返し部に支持され、前記第１本体と前記第２本体とが固定されていることによって、橋梁の桁端部へ設置される際、前記第１本体及び前記第２本体の前記横板部に曲げ応力が生じて前記第１継手と前記第２継手の相対的な位置がずれることが防止されることを特徴とする伸縮装置。 A first joint and a second joint having a surface portion extending in the width direction of the bridge girder and a belly plate portion integrally formed at the base end of the surface portion in the bridge axis direction orthogonal to the width direction of the bridge girder.
A plurality of anchor portions provided so as to project parallel to the bridge axis direction from the surface of the abdominal plate portion, and
A mounting aid according to claim 2, wherein
With
When the upper end of the horizontal plate portion of the first main body is supported by the upper barb portion and the first main body and the second main body are fixed to each other, the bridge girder end portion is installed. A telescopic device characterized in that bending stress is generated in the first main body and the horizontal plate portion of the second main body to prevent the relative positions of the first joint and the second joint from being displaced.
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