JP2001049620A - Hook bolt for fixing bridge sleeper for railroad - Google Patents
Hook bolt for fixing bridge sleeper for railroadInfo
- Publication number
- JP2001049620A JP2001049620A JP11221517A JP22151799A JP2001049620A JP 2001049620 A JP2001049620 A JP 2001049620A JP 11221517 A JP11221517 A JP 11221517A JP 22151799 A JP22151799 A JP 22151799A JP 2001049620 A JP2001049620 A JP 2001049620A
- Authority
- JP
- Japan
- Prior art keywords
- hook
- bolt
- bridge
- bridge sleeper
- hook bolt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Railway Tracks (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、主として鉄道の橋梁に
おける鋼材に橋枕木を固定するのに用いられるフックボ
ルトに関し、列車の振動によるフックボルトの緩みに伴
ってフックボルト先端のフック部が鋼材から外れやすく
なり、また困難な補修作業や膨大な補修費用の出費を軽
減することを目的とする。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hook bolt mainly used for fixing a bridge sleeper to a steel material in a railway bridge. The purpose is to reduce the cost of difficult repair work and huge repair costs.
【０００２】[0002]
【従来の技術】橋枕木を鋼材に固定する在来の技術とし
ては、さきに本発明者が提案したフックボルトが一般的
に知られている（特開平１０−８２４０７号公報参
照）。 これは木製の橋枕木（２）を橋梁上のＩ型鋼材
（３）に固定する場合に、先端にフック部（１１）を有
するとともに、棒状の胴部およびフック部の反対側に雄
螺子部を形成してヘッド部を形成したフックボルト
（４）を用い、フック部（１１）をＩ型鋼材（３）の上
側フランジに係止させるとともに、上記フックボルト
（４）の胴部を、あらかじめ橋枕木（２）の端部に形成
されたボルト穴内に挿通させ、ボルト穴を貫通して突出
したフックボルト（４）の上端ヘッド部に角座金（６）
を介してナット（５）を螺入し、これを締付固定して橋
枕木（２）を固定するようにしていた。2. Description of the Related Art As a conventional technique for fixing a bridge sleeper to a steel material, a hook bolt proposed earlier by the present inventor is generally known (see Japanese Patent Application Laid-Open No. 10-82407). When a wooden bridge sleeper (2) is fixed to an I-shaped steel member (3) on a bridge, a hook part (11) is provided at the tip and a male screw part is provided on the opposite side of the rod-shaped body and the hook part. The hook portion (11) is engaged with the upper flange of the I-shaped steel material (3) by using a hook bolt (4) having a head portion formed therein. A square washer (6) is inserted into a bolt hole formed at the end of the bridge sleeper (2), and is attached to an upper end head portion of a hook bolt (4) protruding through the bolt hole.
, A nut (5) is screwed in, and this is tightened and fixed to fix the bridge sleeper (2).
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記し
た橋枕木の固定手段による場合においては、基本的には
フックボルトの胴部断面形状が真円であるところから、
重量のある列車の度重なる通過に伴って経時的にフック
ボルトの締付に緩みを生じた場合に、フックボルトが共
回りして鋼材のフランジに係合しているフック部の係合
方向が変位し、鋼材から外れやすくなる。However, in the case of using the above-mentioned bridge sleeper fixing means, since the cross section of the body of the hook bolt is basically a perfect circle,
If the tightening of the hook bolts is loosened over time due to the repeated passage of heavy trains, the hook bolts co-rotate and the hooks engaging with the steel flanges It is displaced and easily detached from steel.
【０００４】なお上記した従来例の公報に記載の構造に
あっては、フックボルトの回転を無くすためにフック部
（１１）の後方部に、鋼材端面に当たる両翼（１０）を
有するゲタ座金（２１）を溶接し、また図１０のように
フックボルト（４）の胴部に、長さ方向に沿って凹溝
（９）を形成するとともに、同公報における図９のよう
な四隅にツメ（８）を形成し、かつフックボルト穴の周
方向における一部に、内周方向に向けて凸回り止め
（７）を突設させた角座金（６）を用い、この角座金
（６）の凸回り止め（７）をフックボルト（４）の凹溝
（９）内に嵌めこむとともに、ツメ（８）を木製の橋枕
木（２）に食い込ませることによりＩ型鋼材（３）から
のフック部の外れを防止する工夫が凝らされているもの
の、特に海岸地帯では錆が発生し、上記した図９のツメ
（８）の食い込み程度では掛かりが少なくなり、ボルト
を締め付ける際の係着が不完全で実用的ではない。In the structure described in the above-mentioned prior art, in order to eliminate the rotation of the hook bolt, a getter washer (21) having a pair of wings (10) at the rear of the hook portion (11), which strikes the end surface of the steel material. ), And a concave groove (9) is formed in the body of the hook bolt (4) along the length direction as shown in FIG. 10, and claws (8) are formed at four corners as shown in FIG. ) Is formed, and a corner washer (6) having a protrusion detent (7) protruding toward the inner circumferential direction at a part in the circumferential direction of the hook bolt hole is used. The detent (7) is fitted into the concave groove (9) of the hook bolt (4), and the hook (8) is cut into the wooden bridge sleeper (2), so that the hook portion from the I-shaped steel (3) is formed. Although devastating measures have been taken to prevent slippage, rust especially in coastal areas No, it takes less than about biting nails (8) of FIG. 9 described above, is not incomplete practical fastening when tightening the bolts.
【０００５】また上記したようにフックボルトに長さ方
向に沿わせた凹溝を形成することは、コストの問題ばか
りでなく、フックボルトの耐久強度にも影響し、さらに
木製の橋枕木の風化・肉痩せによって締結力が低下し、
また角座金等の腐食、磨耗等により次第に共回り防止が
不完全となりやすい。 その結果フックボルトが回転し
フック部分が橋げたＨ鋼から外れる現象が数多く発生し
ている。 さらにフックボルトのネジ部とナットが錆付
き、橋上からのナットの増し締めの際、フックボルトも
一緒に「共回り」するという現象も併発している。[0005] Also, as described above, the formation of the concave groove along the length of the hook bolt affects not only the problem of cost but also the durability of the hook bolt, and furthermore, the weathering of wooden bridge sleepers.・ The fastening force decreases due to thinning,
In addition, the prevention of co-rotation is likely to be incomplete due to corrosion and wear of the square washer and the like. As a result, a number of phenomena have occurred in which the hook bolt is rotated and the hook portion comes off the bridged H steel. In addition, the thread and nut of the hook bolt are rusted, and when the nut is retightened from the bridge, the hook bolt also rotates together.
【０００６】さらにその補修のため、橋りょうの下に足
場を仮設し、下からフック部を抑えながら上からナット
を締め直す工事が実施されており、膨大な費用が発生す
る上、橋上での作業のため危険性も高い。 また、橋上
からではフック部の状況を把握しづらく保守管理の面で
も問題を抱えている。[0006] Further, for repair, a scaffold is temporarily installed under the bridge, and the work of retightening the nut from above while suppressing the hook portion from below is carried out, so that enormous costs are incurred and work on the bridge is performed. The danger is also high. In addition, it is difficult to grasp the status of the hook from the bridge, and there is a problem in terms of maintenance management.
【０００７】[0007]
【課題を解決するための手段】そこで本発明は、フック
ボルトの耐久強度を劣化させることなく、しかも加工コ
ストが低廉で、かつフックボルトの経時的な緩みを生じ
た場合においても、鋼材に対するフック部の係合を恒久
的に維持できる画期的な構造を提案するものであり、具
体的には鋼材上に、その長さ方向に対して交差方向に載
置される橋枕木を、鋼材に対して固定するフックボルト
であって、該フックボルトは鋼材に係止するフック部
と、橋枕木に予め形成されるボルト穴に挿通される胴部
と、橋枕木のボルト穴を通過して上方に突出するヘッド
部と、該ヘッド部から胴部の一部にかけて施された螺条
部とからなり、しかも前記した胴部の少なくとも一部は
断面形状が角型あるいは楕円等の非真円型に形成されて
いることを特徴とした鉄道の橋枕木固定用フックボルト
に関する。SUMMARY OF THE INVENTION Accordingly, the present invention provides a hook for a steel material without deteriorating the durability of the hook bolt, at a low processing cost, and even when the hook bolt is loosened over time. It proposes an epoch-making structure that can permanently maintain the engagement of the part, specifically, a bridge sleeper placed on a steel material in a direction crossing the length direction of the steel material. Hook bolts to be fixed to a steel member, a hook portion to be engaged with a steel material, a trunk portion inserted into a bolt hole formed in advance in a bridge sleeper, and And a screw portion formed from the head portion to a part of the body portion, and at least a part of the body portion has a non-round shape such as a square shape or an ellipse in cross section. It is characterized by being formed in On the railway bridge sleeper fixing hook bolt.
【０００８】上記した構成において、あらかじめ橋枕木
にフックボルトの胴部に形成した断面が非真円形の形状
に対応する形状のボルト穴を形成しておき、フックボル
トのフック部を鋼材の上側フランジに係止させるととも
に、その胴部を橋枕木のボルト穴内に、胴部の断面形状
をボルト穴の形状に位置合わせしたうえで挿通させ、ボ
ルト穴を貫通して突出したフックボルトの上端ヘッド部
に座金を介するなどしてナットを螺入し、これを締付固
定して橋枕木を鋼材に固定する。[0008] In the above construction, a bolt hole having a cross section corresponding to a non-circular shape formed in the body of the hook bolt in advance is formed on the bridge sleeper, and the hook portion of the hook bolt is formed of a steel material upper flange. The upper end head of the hook bolt that is inserted into the bolt hole of the bridge sleeper with the cross section of the trunk aligned with the shape of the bolt hole A nut is screwed in through a washer or the like, and the nut is tightened and fixed to fix the bridge sleeper to the steel material.
【０００９】[0009]
【発明実施の形態】以下において本発明の具体的な内容
を図１〜２にあらわした実施例をもとに説明すると、１
はフックボルトをあらわし、該フックボルト１は、鋼材
に係止させるための略Ｊ字状に形成されたフック部２
と、直線状の胴部３と、ヘッド部４と、該ヘッド部４か
ら胴部３の一部にかけて施された螺条部５とからなり、
しかも前記した胴部３は断面形状が非真円型に形成され
ている。DESCRIPTION OF THE PREFERRED EMBODIMENTS The specific contents of the present invention will be described below with reference to an embodiment shown in FIGS.
Represents a hook bolt, and the hook bolt 1 has a hook portion 2 formed in a substantially J shape for engaging with a steel material.
And a linear body 3, a head 4, and a thread 5 provided from the head 4 to a part of the body 3,
Moreover, the body 3 has a non-circular cross section.
【００１０】この場合の断面が非真円型の形状について
は、本実施例の場合においては断面四角形に形成されて
いるが、必ずしも四角形に限られるものではなく、三角
または五角・六角・等の角型であればよく、また楕円形
その他、要するに断面が真円でなく、橋枕木に形成した
これと対応する断面形状のボルト穴内において、外周面
における周方向何れかの部分が橋枕木のボルト穴内壁面
の周方向何れかの部分と当接して回転を規制される形状
であればよい。[0010] In this case, the cross-section of the non-circular shape in this case is formed in a quadrangular cross-section in the case of this embodiment, but is not necessarily limited to a quadrangle, and is not necessarily limited to a quadrangle. Any shape may be used as long as it is a square shape, and an elliptical shape, or in other words, the cross section is not a perfect circle, and in a bolt hole of a cross section corresponding to the cross section formed in the bridge sleeper, any part of the circumferential surface on the outer peripheral surface is a bolt of the bridge sleeper Any shape may be used as long as it is in contact with any part of the inner wall surface of the hole in the circumferential direction to restrict rotation.
【００１１】なおこの場合における断面形状を非真円型
に形成するのは、胴部３の長さ方向の一部についてだけ
であっても効果がある。 さらに略Ｊ字状に曲げられた
フック部２は、その曲げ部分にける内周側の曲率をＲ１
４ｍｍ以下とするとフック部２の係合具合が悪くなり、
また反対に内周側の曲率をＲ６０ｍｍを超えるようにす
ると、Ｈ型鋼材のフランジ幅に比してフック部２の開口
幅が過大になりすぎて、同じく係合具合が不良となると
ころからフック部２の曲げ部分における内周側の曲率を
Ｒ１５〜６０ｍｍの範囲内とする必要がある。 さらに
該部分の加熱曲げ加工後に熱間鍛造加工を施すことによ
り金属組織強度を向上させることができ、これにより剛
性と復元性を向上させることができる。In this case, the formation of the non-circular cross section is effective even if only a part of the body 3 in the longitudinal direction is formed. Further, the hook portion 2 bent into a substantially J-shape has a curvature R1 on the inner peripheral side at the bent portion.
If it is less than 4 mm, the engagement of the hook portion 2 becomes poor,
On the other hand, when the curvature on the inner peripheral side is more than R60 mm, the opening width of the hook portion 2 becomes too large as compared with the flange width of the H-shaped steel material, and the hooking portion is similarly deteriorated. It is necessary that the radius of curvature on the inner peripheral side in the bent portion of the portion 2 be in the range of R15 to 60 mm. Further, the metal structure strength can be improved by performing hot forging after the heat bending of the portion, thereby improving the rigidity and the resilience.
【００１２】このように、フック部２の曲げ部分におけ
る内周側の曲率をＲ１５〜６０ｍｍの範囲内とし、しか
も該部分の加熱曲げ加工後に熱間鍛造加工を施した場合
には、例えば直径２６ｍｍの角型フックボルトの場合、
以下に示すように在来の２５ｍｍ丸型フックボルトに比
して略３倍の強度アップがみられる。As described above, when the curvature of the inner peripheral side of the bent portion of the hook portion 2 is set to a range of R15 to 60 mm, and the portion is subjected to hot forging after the heat bending process, for example, the diameter is 26 mm. For square hook bolts,
As shown below, the strength is approximately three times higher than that of a conventional 25 mm round hook bolt.
【００１３】＜直径２５ｍｍ丸型のフックボルト＞ 断面積 ： Ａ４＝｛π／４｝×２５２＝４９１ｍｍ
２ 断面係数 ： Ｚ１＝｛π／３２｝×２５３＝１５３３
ｍｍ３ ＜直径２６ｍｍ角型のフックボルト＞ 断面積 ： Ａ５＝｛１／２｝×（２７＋８）×３６
＝６３０ｍｍ３ 断面係数 ： Ｚ２＝｛２７２＋４×２７×８＋８２／
１２（８×２＋２７）｝×３６２＝４１６２ｍｍ３ <Hook bolt of 25 mm in diameter round shape> Cross-sectional area: A 4 = {π / 4} × 25 2 = 491 mm
2 Section modulus: Z 1 = {π / 32} × 25 3 = 1533
mm 3 <26 mm diameter square hook bolt> Cross-sectional area: A 5 = {1/2} × (27 + 8) × 36
= 630 mm 3 section modulus: Z 2 = ｛27 2 + 4 × 27 × 8 + 8 2 /
12 (8 × 2 + 27)｝ × 36 2 = 4162 mm 3
【００１４】＜比 較＞ 断面積の比 ： Ａ５／Ａ４＝６３０／４９１＝１．
２８倍 断面係数の比 ： Ｚ２／Ｚ１＝４１６２／１５３３＝
２．７１倍<Comparison> Cross-sectional area ratio: A 5 / A 4 = 630/491 = 1.
28 times ratio of section modulus: Z 2 / Z 1 = 4162/1533 =
2.71 times
【００１５】上記において、断面積比が１．２８倍であ
るのに断面係数比が２．７１倍となるのは、胴部断面を
四角もしくは台形とし、各角部分のリブ効果を高めた結
果によるものである。 なお上記の場合において、型打
鍛造による鍛錬効果を１．１〜１．２倍とすると、総合
効果として、断面係数２．７１×１．１＝２．９８とな
り、耐久強度が略３倍になることが明らかとなった。In the above description, the reason why the cross-sectional area ratio is 2.71 times while the cross-sectional area ratio is 1.28 times is that the cross section of the body is square or trapezoidal and the rib effect of each corner is enhanced. It is due to. In the above case, assuming that the forging effect of the stamping forging is 1.1 to 1.2 times, the overall effect is 2.71 × 1.1 = 2.98 as a total effect, and the durability is almost tripled. It became clear that it became.
【００１６】次に上記したフックボルトの使用について
図１〜２をもとに説明すると、橋梁は、橋台、橋脚、橋
桁に支えられた橋桁Ｈ鋼１０があり、橋桁Ｈ鋼１０の上
に高さ調整板１１を介し、橋桁Ｈ鋼１０の長さ方向に交
差させて橋枕木１２が載置され、さらに橋枕木１２上に
レール１４を載せた構造となっている。 橋枕木１２
は、その左右両端部にフックボルト挿入用のボルト穴１
３を予め穿設しておく。Next, the use of the above-described hook bolt will be described with reference to FIGS. 1 and 2. The bridge includes an abutment, a pier, and a bridge girder H steel 10 supported by a bridge girder. A bridge sleeper 12 is mounted on the bridge girder H steel 10 so as to intersect with the bridge girder H steel 10 via a length adjustment plate 11, and a rail 14 is mounted on the bridge sleeper 12. Bridge sleepers 12
Are bolt holes 1 for inserting hook bolts
3 is drilled in advance.
【００１７】この場合のボルト穴１３は、使用されるフ
ックボルト１の胴部３に賦型された断面非真円型に対応
する断面形状とする必要があり、橋枕木１２が楢、ケン
パス等の木製である場合には断面四角等の形状をした穴
明け機（例えば日立製作所製の自動昇降角のみＢＳ３０
Ｙ等）を使用して穿設する。 また橋枕木１２がガラス
繊維補強樹脂の場合は、上記した四角等の穴明け機を使
用するほか、四角パイプを挿入の上射出成形加工するよ
うにしてもよい。 さらに橋枕木がコンクリート製の場
合には、予め四角パイプ片を埋め込んでおくようにして
もよい。In this case, the bolt hole 13 must have a cross-sectional shape corresponding to the non-circular cross-section formed on the body 3 of the hook bolt 1 to be used. If it is made of wood, a drilling machine having a square cross section or the like (for example, a BS30 automatic elevation angle only manufactured by Hitachi, Ltd.)
Y etc.). When the bridge sleeper 12 is made of a glass fiber reinforced resin, the above-described square drilling machine may be used, or a square pipe may be inserted and injection molding may be performed. Further, when the bridge sleeper is made of concrete, a square pipe piece may be embedded in advance.
【００１８】Ｈ鋼材１０に対する橋枕木１２の固定作業
は、まずフックボルト１のヘッド部４を先頭に橋枕木１
２のボルト穴１３の下側からボルト穴１３内に挿入し、
フック部２をＨ鋼材１０のフランジ１０ａに係合させた
状態にて、ヘッド部４ボルト穴１３の上端より上方に突
出させ、さらにヘッド部４のネジ部５に上側から丸座金
６、スプリングワッシャー７を装入し、続いてハードロ
ック下ナット８ａを規定トルクで締め付け、さらにその
上に上ナット８を螺入し、続いて下ナット８ａを押えた
上で上ナット８を規定のトルクで締め付ける。The work of fixing the bridge sleeper 12 to the H steel material 10 is performed by first setting the head section 4 of the hook bolt 1 to the top, and
2 into the bolt hole 13 from below the bolt hole 13,
With the hook portion 2 engaged with the flange 10a of the H steel material 10, the head portion 4 is projected upward from the upper end of the bolt hole 13, and the screw portion 5 of the head portion 4 is further rounded from above with a round washer 6, a spring washer. 7 and then tighten the hard lock lower nut 8a with a specified torque, further screw the upper nut 8 thereon, and then hold down the lower nut 8a and tighten the upper nut 8 with the specified torque. .
【００１９】さらにフックボルト１の螺子部５の上端に
形成したピン穴にＲピン９を差込み、万が一上ナット８
が緩んだ場合でもフックボルト５の脱落を防止すること
ができるようにし、これによって橋枕木１２をＨ鋼材１
０に対して固定させている。Further, an R pin 9 is inserted into a pin hole formed at the upper end of the screw portion 5 of the hook bolt 1, and
Hook bolts 5 can be prevented from falling off even if they are loosened.
0 is fixed.
【００２０】[0020]
【発明の効果】以上の説明で明らかなように本発明は、
鋼材上に、その長さ方向に対して交差方向に載置される
橋枕木を、鋼材に対して固定するフックボルトであっ
て、該フックボルトは鋼材に係止するフック部と、橋枕
木に予め形成されるボルト穴に挿通される胴部と、橋枕
木のボルト穴を通過して上方に突出するヘッド部と、該
ヘッド部から胴部の一部にかけて施された螺条部とから
なり、しかも前記した胴部の少なくとも一部は断面形状
が角型あるいは楕円型等の非真円型に形成されているた
めに、低コストでしかも耐久性が著しく向上するばかり
でなく、フックボルトが共回りして鋼材のフランジに係
合しているフック部の係合方向が変位し、鋼材から外れ
ることがなく、また共回りを防止することができ、また
経済的で、氏かも効率的な保守を実現危険を防止するこ
とができる。As is clear from the above description, the present invention
A hook bolt for fixing a bridge sleeper placed on a steel material in a direction crossing the length thereof to the steel material, wherein the hook bolt is provided on a hook portion for locking the steel material and a bridge sleeper. It is composed of a body part inserted into a bolt hole formed in advance, a head part protruding upward through the bolt hole of the bridge sleeper, and a screw part provided from the head part to a part of the body part. In addition, since at least a part of the body portion is formed in a non-circular shape such as a square shape or an elliptical shape in cross section, not only the cost is reduced and the durability is remarkably improved, but also a hook bolt is formed. The direction of engagement of the hooks engaging with the flange of the steel material co-rotates is displaced, so that the hooks do not come off from the steel material, can prevent co-rotation, and are economical and efficient. Maintenance can be realized and danger can be prevented.
【００２１】またフック部に対し、局所加熱曲げ加工に
より、その曲げ部分にける内周側の曲率を好ましくはＲ
１５〜６０ｍｍの範囲内とするとともに、その後に熱間
鍛造加工を施すようにした場合においては剛性と復元性
を向上させることができ、とくに木製橋枕木の肉痩・風
化による緩み、あるいは振動等は角フックボルト自体の
復元性により相当程度吸収することができ、保線作業の
安全性確保、大幅な効率化、かつ保守管理の充実化を図
ることが可能となる。Further, the local curvature bending of the hook portion by the local heating bending process is performed so that the curvature on the inner peripheral side of the bent portion is preferably R.
Within the range of 15 to 60 mm, and when hot forging is performed thereafter, rigidity and resilience can be improved, and particularly, wooden bridge sleepers are loosened due to thinning, weathering, vibration, etc. Can be absorbed to a considerable extent by the resilience of the square hook bolt itself, and it is possible to ensure the safety of track maintenance work, greatly improve efficiency, and enhance maintenance management.
【図１】本発明に係る角フックボルトの使用状態をあら
わした分解斜視図。FIG. 1 is an exploded perspective view showing a use state of a square hook bolt according to the present invention.
【図２】本発明に係る角フックボルトの使用状態をあら
わした側面図。FIG. 2 is a side view showing a use state of the square hook bolt according to the present invention.
１ フックボルト ２ フック部 ３ 胴部 ４ ヘッド部 ５ 螺条部 ６ 丸座金 ７ スプリングワッシャー ８ 上ナット ８ａ 下ナット ９ Ｒピン DESCRIPTION OF SYMBOLS 1 Hook bolt 2 Hook part 3 Body part 4 Head part 5 Screw part 6 Round washer 7 Spring washer 8 Upper nut 8a Lower nut 9 R pin
Claims (5)
に載置される橋枕木を、鋼材に対して固定するフックボ
ルトであって、該フックボルトは鋼材に係止するフック
部と、橋枕木に予め形成されるボルト穴に挿通される胴
部と、橋枕木のボルト穴を通過して上方に突出するヘッ
ド部と、該ヘッド部から胴部の一部にかけて施された螺
条部とからなり、しかも前記した胴部の少なくとも一部
は断面形状が非真円型に形成されていることを特徴とし
た鉄道の橋枕木固定用フックボルト。1. A hook bolt for fixing a bridge sleeper placed on a steel material in a direction crossing the length thereof to the steel material, wherein the hook bolt is engaged with a steel material. A torso inserted into a bolt hole formed in advance in the bridge sleeper, a head protruding upward through the bolt hole of the bridge sleeper, and a screw provided from the head to a part of the torso. A hook bolt for fixing a railroad bridge sleeper, comprising a ridge portion and at least a part of the trunk portion having a non-circular cross section.
型の断面形状は、三角・四角・六角等の角型であるとこ
ろの請求項１に記載の鉄道の橋枕木固定用フックボル
ト。2. The railroad bridge bridge sleeper fixing hook according to claim 1, wherein the non-circular cross-sectional shape formed on at least a part of the trunk portion is a rectangular shape such as a triangle, a square, or a hexagon. bolt.
型の断面形状は、楕円型であるところの請求項１に記載
の鉄道の橋枕木固定用フックボルト。3. The railroad bridge bridge sleeper fixing hook bolt according to claim 1, wherein the non-circular cross-sectional shape formed in at least a part of the trunk portion is elliptical.
造加工を施すことにより剛性と復元性を向上させたもの
であるところの請求項１〜３に記載の鉄道の橋枕木固定
用フックボルト。4. A railway bridge sleeper fixing hook according to claim 1, wherein the hook portion is formed by performing hot forging from local heating bending to improve rigidity and restorability. bolt.
の曲げ部分における内周側の曲率をＲ１５〜６０ｍｍの
範囲内とするとともに、その後熱間鍛造加工を施すこと
により剛性と復元性を向上させたものであるところの請
求項１〜３に記載の鉄道の橋枕木固定用フックボルト。5. The hook portion has a curvature on an inner peripheral side in a bent portion within a range of R15 to 60 mm by a local heating bending process, and then is subjected to hot forging to improve rigidity and resilience. The railroad bridge sleeper fixing hook bolt according to any one of claims 1 to 3, wherein the hook bolt is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22151799A JP4210882B2 (en) | 1999-08-04 | 1999-08-04 | Railway bridge sleeper fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22151799A JP4210882B2 (en) | 1999-08-04 | 1999-08-04 | Railway bridge sleeper fixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001049620A true JP2001049620A (en) | 2001-02-20 |
| JP4210882B2 JP4210882B2 (en) | 2009-01-21 |
Family
ID=16767962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22151799A Expired - Lifetime JP4210882B2 (en) | 1999-08-04 | 1999-08-04 | Railway bridge sleeper fixing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4210882B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013177794A (en) * | 2012-02-10 | 2013-09-09 | Yamada Seimitsu Seisakusho:Kk | Fixing structure for railroad tie, and bracing and washer used therefor |
| JP2014034762A (en) * | 2012-08-07 | 2014-02-24 | Union Kensetsu Kk | Fixing device for bridge crosstie |
| WO2015027083A1 (en) * | 2013-08-21 | 2015-02-26 | Lewis Bolt & Nut Company | Bridge tie fastener system |
| JP2016098493A (en) * | 2014-11-19 | 2016-05-30 | 鋭 塩濱 | Hooking metal fitting |
| JP5976848B2 (en) * | 2014-04-04 | 2016-08-24 | 友志郎 久保 | Panel and its mounting structure |
| JP2019132417A (en) * | 2018-02-02 | 2019-08-08 | 正雄 佐藤 | L-shaped one stage bolt with one hole |
| JP2021067154A (en) * | 2019-10-28 | 2021-04-30 | コンドーテック株式会社 | Sleeper fixing structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0571309U (en) * | 1991-03-29 | 1993-09-28 | 小野田エー・エル・シー株式会社 | Hook bolt |
| JPH06173374A (en) * | 1992-10-05 | 1994-06-21 | Nippon Iton Kogyo Kk | Panel metal fixute |
| JPH08168838A (en) * | 1991-11-01 | 1996-07-02 | Yoneo Matsuo | Manufacture of hook for crane |
-
1999
- 1999-08-04 JP JP22151799A patent/JP4210882B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0571309U (en) * | 1991-03-29 | 1993-09-28 | 小野田エー・エル・シー株式会社 | Hook bolt |
| JPH08168838A (en) * | 1991-11-01 | 1996-07-02 | Yoneo Matsuo | Manufacture of hook for crane |
| JPH06173374A (en) * | 1992-10-05 | 1994-06-21 | Nippon Iton Kogyo Kk | Panel metal fixute |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013177794A (en) * | 2012-02-10 | 2013-09-09 | Yamada Seimitsu Seisakusho:Kk | Fixing structure for railroad tie, and bracing and washer used therefor |
| JP2014034762A (en) * | 2012-08-07 | 2014-02-24 | Union Kensetsu Kk | Fixing device for bridge crosstie |
| WO2015027083A1 (en) * | 2013-08-21 | 2015-02-26 | Lewis Bolt & Nut Company | Bridge tie fastener system |
| US9512573B2 (en) | 2013-08-21 | 2016-12-06 | Lewis Bolt & Nut Company | Bridge tie fastener system |
| JP5976848B2 (en) * | 2014-04-04 | 2016-08-24 | 友志郎 久保 | Panel and its mounting structure |
| JP6000475B2 (en) * | 2014-04-04 | 2016-09-28 | 友志郎 久保 | Panel and its mounting structure |
| KR20160142295A (en) * | 2014-04-04 | 2016-12-12 | 토모시로 쿠보 | Panel and attachment structure thereof |
| KR102077490B1 (en) | 2014-04-04 | 2020-02-14 | 토모시로 쿠보 | Panel and attachment structure thereof |
| JP2016098493A (en) * | 2014-11-19 | 2016-05-30 | 鋭 塩濱 | Hooking metal fitting |
| JP2019132417A (en) * | 2018-02-02 | 2019-08-08 | 正雄 佐藤 | L-shaped one stage bolt with one hole |
| JP2021067154A (en) * | 2019-10-28 | 2021-04-30 | コンドーテック株式会社 | Sleeper fixing structure |
| JP7319543B2 (en) | 2019-10-28 | 2023-08-02 | コンドーテック株式会社 | Sleeper fixed structure |
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| Publication number | Publication date |
|---|---|
| JP4210882B2 (en) | 2009-01-21 |
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