JP3356652B2 - Curved section-compatible joining device for ladder-type sleepers - Google Patents
Curved section-compatible joining device for ladder-type sleepersInfo
- Publication number
- JP3356652B2 JP3356652B2 JP15042497A JP15042497A JP3356652B2 JP 3356652 B2 JP3356652 B2 JP 3356652B2 JP 15042497 A JP15042497 A JP 15042497A JP 15042497 A JP15042497 A JP 15042497A JP 3356652 B2 JP3356652 B2 JP 3356652B2
- Authority
- JP
- Japan
- Prior art keywords
- joining
- ladder
- plate
- arc portion
- curved section
- 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.)
- Expired - Fee Related
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- Ladders (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、鉄道の道床上に敷
設される軌道として、コンクリート製縦梁と鋼管製継材
とをコンクリート打設により一体化したはしご状の混合
剛結構造まくらぎ（以下軌道用ラダー型まくらぎとい
う）同士を接合する接合装置であって、曲線区間でも接
合可能なラダー型まくらぎ用の曲線区間対応型接合装置
に関する。BACKGROUND OF THE INVENTION The present invention relates to a ladder-shaped composite rigid connection sleeper in which a concrete vertical beam and a steel pipe joint are integrated by concrete casting as a track to be laid on a railway trackbed. The present invention relates to a joining device for joining ladder-type sleepers (hereinafter, referred to as a track ladder-type sleeper), which is capable of joining even a curved section.
【０００２】[0002]
【従来の技術】鉄道線路は、軌道とそれを支持する基盤
とから構成された専用の通路である。軌道は、道床、ま
くらぎ、レールからなり、基盤は、道床を支える路盤
と、さらにそれを支える土木構造物からなる。道床に
は、一般にバラストを用い、その弾力性をもって列車に
よる衝撃力や振動を吸収している。新幹線では、軌道保
守を軽減するためにまくらぎをコンクリート版に、バラ
ストをモルタルに置換えたスラブ軌道も使っている。ま
くらぎの役割は、車重を道床に広く分散して道床にかか
る負担を軽減し、レールの経年的な沈下を防止するスリ
ーパー機能と、左右レールの間隔（軌間）を一定に保つ
タイ機能と、横圧、レール軸方向力の作用に対して、レ
ールが左右、前後に動かないようにする横抵抗、縦抵抗
機能の三つである。2. Description of the Related Art A railway line is a dedicated passage composed of a track and a base supporting the track. The track consists of a track bed, sleepers, and rails, and the base consists of a roadbed that supports the bed and civil engineering structures that support it. A ballast is generally used for the ballast, and the impact force and vibration of the train are absorbed with its elasticity. The Shinkansen also uses slab tracks in which sleepers are replaced with concrete slabs and ballast is replaced with mortar to reduce track maintenance. The role of sleepers is to disperse the vehicle weight widely on the roadbed, reduce the load on the roadbed, prevent the rails from sinking over time, and the tie function to keep the distance between the left and right rails (gauge) constant. There are three functions, lateral resistance and longitudinal resistance, which prevent the rail from moving left and right and back and forth against the action of lateral pressure and rail axial force.
【０００３】従来使用されてきたコンクリート製の横ま
くらぎは、木製まくらぎの代替品として開発されたもの
である。しかしながら、コンクリート製の横まくらぎ
は、重量があり、締結力も強いため、現代の高速鉄道に
おいては代替品を超えた重要な軌道構成要素になってき
ている。Conventionally used concrete sleepers have been developed as an alternative to wooden sleepers. However, the horizontal sleepers made of concrete are heavy and have a strong fastening force, so they have become an important track component beyond alternatives in modern high-speed railways.
【０００４】コンクリート製の横まくらぎには、構造的
に分類すると以下のようなものがある。 １）、コンクリート付着性の良好なＰＣ鋼線を予め緊張
しておき、コンクリートが硬化した後に緊張力を解放す
る形式のプレテンション式ＰＣまくらぎ。 ２）、コンクリートを硬化させた後に、ＰＣ鋼棒を挿入
して緊張したのち、ＰＣ鋼棒と挿入口の間隙にモルタル
を注入する形式のボンド・ポストテンション式ＰＣまく
らぎ。 ３）、ＰＣ鋼棒表面にアスファルト等を塗布した状態で
コンクリートを硬化させた後、ＰＣ鋼棒を緊張する形式
のアンポンド・ポストテンション式ＰＣまくらぎ。 ４）、鉄筋コンクリート製の短ブロックを鋼材で連結し
た形式のツーブロック型ＲＣまくらぎ。[0004] The horizontal sleepers made of concrete include the following when structurally classified. 1) A pretension type sleeper in which a PC steel wire having good adhesion to concrete is tensioned in advance, and the tension is released after the concrete hardens. 2) A bond post-tension type sleeper in which after hardening concrete, a PC steel rod is inserted and tensioned, and then mortar is injected into a gap between the PC steel rod and the insertion opening. 3) An unpounded post-tension type sleeper in which concrete is hardened while asphalt or the like is applied to the surface of a PC steel rod and then the PC steel rod is tensioned. 4) A two-block type RC sleeper in which short blocks made of reinforced concrete are connected with steel.
【０００５】上記各コンクリート製の横まくらぎにおい
ては、ポストテンション式（ボンド、アンボンドを問わ
ず）は流れ作業に適しているという長所があり、ツーブ
ロック型はＰＣまくらぎより安価であるばかりでなく、
温度上昇時の座屈現象によるロングレールの横方向張り
出しを防止する横抵抗機能がモノブロック式より優れて
いると云われている。[0005] In the above-mentioned concrete sleepers, the post-tension type (both bonded and unbonded) has the advantage that it is suitable for flow work, and the two-block type is only cheaper than the PC sleeper. Not
It is said that the lateral resistance function that prevents the long rail from overhanging due to the buckling phenomenon when the temperature rises is superior to the monoblock type.
【０００６】このようなコンクリート製の横まくらぎ
は、木製まくらぎの代替品として開発されたため、木製
まくらぎと同様の形態を取っており、前述のスリーパー
機能よりもタイ機能を優先したまくらぎで、レールを間
欠的に支持するように独立した台として機能するため、
不動かつ均一にレールを支える必要がある。しかし、実
際の軌道では、横まくらぎは輪重の作用によって経年的
に沈下したり、横圧の作用によって滑動するため、軌道
が狂って車両の動揺が激しくなっていくという問題点を
有している。Since such a concrete horizontal sleeper has been developed as a substitute for a wooden sleeper, it takes the same form as a wooden sleeper, and is a sleeper that prioritizes the tie function over the sleeper function described above. , To function as an independent stand to support the rail intermittently,
It is necessary to support the rails immovably and evenly. However, on an actual track, the lateral sleepers sink over time due to the effect of wheel load, or slide due to the effect of lateral pressure. ing.
【０００７】前記スリーパー機能を強化した構造のまく
らぎとして、上記横まくらぎに代わるものとして縦まく
らぎが開発された。過去に開発された縦まくらぎは、下
記の問題点を有している。 １）、レール把握式スチール製継材方式は、前述のタイ
機能が大幅に不足する。 ２）、ヒンジ結合コンクリート製継材方式は、ヒンジ接
合部の回転のため、前述のタイ機能が不足すると共に、
構造上の弱点となる。 ３）、剛結合コンクリート製継材方式は、接合部を含め
て力学的な問題がないものの、過大重量・過大剛性とな
り、まくらぎの設置や保守が困難である。As a sleeper having a structure in which the sleeper function is enhanced, a vertical sleeper has been developed as an alternative to the horizontal sleeper. Vertical sleepers developed in the past have the following problems. 1) In the case of the steel jointing system using rails, the above-mentioned tie function is largely insufficient. 2) In the hinge-jointed concrete joining method, the above-mentioned tie function is insufficient due to the rotation of the hinge joint, and
This is a structural weakness. 3) The rigidly-joined concrete joining material system has no mechanical problems including the joints, but has excessive weight and excessive rigidity, and it is difficult to install and maintain a sleeper.
【０００８】上記問題点を克服できるまくらぎとして
は、本出願人の一人が開発した縦まくらぎのラダー型ま
くらぎがある。このラダー型まくらぎは、図７に示すと
おり、最小断面のＰＲＣコンクリート製縦梁１０１と鋼
管製継材１０２とを一体化した梯子状の混合剛結構造で
あり、上面にレール１０３を締結装置１０４により固定
したもので、適度な剛性を持ち、かつ過大負荷に対する
耐荷性能と復元性能に優れた超軽量の構造体であり、ス
リーパー機能および横抵抗機能を大幅に強化したうえ
で、軽量化とタイ機能確保を満足させている。このよう
に、ラダー型まくらぎは、まくらぎに期待される機能に
優れたものである。As a sleeper capable of overcoming the above problems, there is a ladder-type sleeper of a vertical sleeper developed by one of the present applicants. As shown in FIG. 7, this ladder-type sleeper has a ladder-like mixed rigid structure in which a PRC concrete vertical beam 101 having a minimum cross section and a steel pipe joint member 102 are integrated, and a rail 103 is attached to an upper surface by a fastening device. It is an ultra-lightweight structure that is fixed by 104, has moderate rigidity, and has excellent load-bearing and restoring performance against overload, and has a significantly enhanced sleeper function and lateral resistance function. We are satisfied with securing the Thai function. As described above, the ladder-type sleeper has excellent functions expected of the sleeper.
【０００９】上記ラダー型まくらぎを使用して軌道を構
成する場合は、まくらぎ同士を接合することが望まし
く、従来は図８に示すとおり、縦梁１０１両側面に添接
板１１１を配置し、縦梁１０１を水平に貫通するボルト
１１２とナット１１３で締結するプレート方式が主であ
る。When the track is formed by using the ladder-type sleeper, it is desirable to join the sleepers. Conventionally, as shown in FIG. A plate method in which a bolt 112 and a nut 113 that penetrate the vertical beam 101 horizontally and are fastened by a nut 113 is mainly used.
【００１０】[0010]
【発明が解決しようとする課題】上記縦梁１０１両側面
に添接板１１１を配置し、縦梁１０１を水平に貫通する
ボルト１１２とナット１１３で接合する方式は、接合部
に繰り返し輪荷重が作用すると、ボルト１１２に剪断力
が作用し、添接板１１１と縦梁１０１部の間の摩擦抵抗
が解放され、最終的に縦梁１０１内部のボルト１１２近
傍にひび割れが生じていた。さらに、軌道は、直線区間
ばかりでなく、曲線区間があるため、縦梁１０１両側面
に添接板１１１を配置してボルトナットで締結するプレ
ート方式では、曲線区間での接合は不可能である。The method of disposing the contact plates 111 on both sides of the vertical beam 101 and joining the vertical beam 101 with bolts 112 and nuts 113 that penetrate the horizontal beam 101 horizontally is such that a repeated wheel load is applied to the joint. When this acts, a shearing force acts on the bolt 112 to release the frictional resistance between the attachment plate 111 and the vertical beam 101, and finally a crack is generated near the bolt 112 inside the vertical beam 101. Further, since the track has not only a straight section but also a curved section, it is impossible to join the curved section by a plate method in which the attachment plates 111 are arranged on both side surfaces of the longitudinal beam 101 and fastened with bolts and nuts. .
【００１１】本発明の目的は、上記従来技術の欠点を解
消し、軌道の直線区間だけでなく、曲線区間であっても
接合可能で、ラダー型まくらぎの縦梁部と同等の曲げ剛
性、強度を有するラダー型まくらぎ用の曲線区間対応型
接合装置を提供することにある。An object of the present invention is to solve the above-mentioned drawbacks of the prior art, and to be able to join not only in a straight section of a track but also in a curved section, and have the same bending rigidity and strength as a longitudinal beam of a ladder-type sleeper. It is an object of the present invention to provide a ladder-type sleeper having a curved section-compatible joining device having the following.
【００１２】[0012]
【課題を解決するための手段】本発明の請求項１のラダ
ー型まくらぎ用の曲線区間対応型接合装置は、直線部と
円弧部からなる凸型接合板と、直線部と円弧部からなる
凹型接合板から構成され、一方のラダー型まくらぎの左
右縦梁の側面端部に直線部を固定した凸型接合板の円弧
部に、他方のラダー型まくらぎの左右縦梁の側面端部に
直線部を固定した凹型接合板の円弧部を接合させてボル
トで締結することとしている。このように、一方のラダ
ー型まくらぎの左右縦梁の側面端部に直線部を固定した
凸型接合板の円弧部に、他方のラダー型まくらぎの左右
縦梁の側面端部に直線部を固定した凹型接合板の円弧部
を接合させてボルトで締結することによって、直線区間
の接合ばかりでなく、凸型接合板の円弧部と凹型接合板
の円弧部を接合時に一方を回動させることによって、曲
線区間の曲率に対応して接合できる。According to a first aspect of the present invention, there is provided a ladder-type sleeper curved section-adaptive joining apparatus comprising a straight joining portion and an arc portion, and a straight joining portion and an arc portion. The ladder-type sleeper consists of a concave joint plate, and the straight part is fixed to the lateral end of the left and right vertical beam of one ladder-type sleeper. The arc portions of the concave joining plate having the fixed portions are joined and fastened with bolts. In this way, the straight part is fixed to the side of the left and right vertical beams of the other ladder-type sleeper, to the arc part of the convex joint plate where the straight part is fixed to the side ends of the left and right vertical beams of the one ladder-type sleeper By joining the arc portions of the concave joining plate and fastening them with bolts, not only joining in the straight section, but also turning one of the arc portion of the convex joining plate and the arc portion of the concave joining plate at the time of joining. Thereby , joining can be performed according to the curvature of the curved section.
【００１３】本発明の請求項２のラダー型まくらぎ用の
曲線区間対応型接合装置は、直線部と円弧部とからなる
凹型接合板と、該凹型接合板の円弧部に沿う円筒部材か
ら構成され、前後のラダー型まくらぎの左右縦梁の側面
端部に直線部を固定した凹型接合板の円弧部で形成した
円内に、円筒部材を嵌合させてボルトで締結することと
している。このように、前後のラダー型まくらぎの左右
縦梁の側面端部に直線部を固定した凹型接合板の円弧部
で形成した円内に、円筒部材を嵌合させてボルトで締結
することによって、直線区間の接合ばかりでなく、前後
の各凹型接合板の円弧部と円筒部材を嵌合時に一方また
は双方の凹型接合板、すなわちラダー型まくらぎを回動
させることによって、軌道の曲線区間であっても接合可
能となり、曲線区間の曲率に対応して接合できる。According to a second aspect of the present invention, there is provided a ladder-type sleeper joint for curved section corresponding to a curved section, comprising a concave joining plate comprising a straight portion and an arc portion, and a cylindrical member along the arc portion of the concave joining plate. Then, the cylindrical member is fitted into a circle formed by the arc portion of the concave joining plate in which the straight portion is fixed to the side end of the left and right vertical beams of the front and rear ladder-type sleepers, and fastened with bolts. In this way, by fitting the cylindrical member into the circle formed by the arc portion of the concave joining plate in which the linear portion is fixed to the side end of the left and right vertical beams of the front and rear ladder-type sleepers, and fastening by bolts, In addition to joining the straight sections , one or both of the concave joining plates, that is, the ladder-type sleeper, are rotated at the time of fitting the arc portion and the cylindrical member of each of the front and rear concave joining plates, so that the curved section of the track can be obtained. also it enables joint there can be joined so as to correspond to the curvature of the curved section.
【００１４】本発明の請求項３のラダー型まくらぎ用の
曲線区間対応型接合装置は、直線部と円弧部からなる凸
型接合板と、直線部と円弧部からなる左右一対の接合板
から構成され、一方のラダー型まくらぎの左右縦梁の側
面端部に直線部を固定した前記凸型接合板の円弧部に、
他方のラダー型まくらぎの左右縦梁の側面端部に直線部
を固定した左右一対の接合板の各円弧部を接合させてボ
ルトで締結する。このように、直線部と円弧部からなる
左右一対の接合板を用いることによって、一体型の凹型
接合板に比べ円弧部の一部を切除しているので、切除し
た分だけ重量を軽減できる。According to a third aspect of the present invention, there is provided a ladder-type sleeper joint for curved sections, comprising a convex joining plate comprising a straight portion and an arc portion, and a pair of right and left joining plates comprising a straight portion and an arc portion. The ladder-type sleeper is configured with an arc portion of the convex joining plate having a straight portion fixed to a side end portion of the left and right vertical beams of the ladder-type sleeper,
The arc portions of the pair of left and right joint plates, each having a straight portion fixed to the side end of the left and right vertical beams of the other ladder-type sleeper, are joined and fastened with bolts. By using a pair of right and left joining plates composed of a straight portion and an arc portion as described above, a part of the arc portion is cut off as compared with the integrated concave joining plate, so that the weight can be reduced by the cut amount.
【００１５】本発明の請求項４のラダー型まくらぎ用の
曲線区間対応型接合装置は、直線部と円弧部とからなる
左右二対の接合板と、該接合板の各円弧部の内周面に沿
う円筒部材から構成され、前後両方のラダー型まくらぎ
の左右の縦梁の各側面端部に直線部を固定した前記接合
板の各円弧部に、円筒部材を沿わせてボルトで締結す
る。このように、直線部と円弧部からなる左右一対の凹
型接合板を用いることによって、一体型の凹型接合板に
比べ円弧部の一部を切除しているので、切除した分だけ
重量を軽減できる。According to a fourth aspect of the present invention, there is provided a joining device for curved sections corresponding to a ladder-type sleeper, wherein two pairs of right and left joining plates each comprising a straight portion and an arc portion, and an inner periphery of each arc portion of the joining plate. It is composed of a cylindrical member along the surface, and is fastened with bolts along the cylindrical member to each arc portion of the joining plate in which the linear portion is fixed to each side end of the left and right vertical beams of the front and rear ladder-type sleepers. . In this way, by using a pair of left and right concave joining plates composed of a straight portion and an arc portion, a part of the arc portion is cut off as compared with the integrated concave joining plate, so that the weight can be reduced by the cut amount. .
【００１６】本発明の請求項５のラダー型まくらぎ用の
曲線区間対応型接合装置は、請求項１の接合装置におい
て、凸型接合板の円弧部と凹型接合板の円弧部が円周方
向に締結用ボルトの長孔を有することを特徴とする。こ
のように締結用ボルト孔を長孔とすることによって、敷
設現場においてラダー型まくらぎを曲線区間の曲率に対
応させて接合することができる。According to a fifth aspect of the present invention, there is provided a joining device for a ladder-type sleeper according to a curved section, wherein the arc portion of the convex joining plate and the arc portion of the concave joining plate are arranged in the circumferential direction. A long hole of a fastening bolt. By making the fastening bolt holes long, the ladder-type sleeper can be joined at the installation site in accordance with the curvature of the curved section.
【００１７】本発明の請求項６のラダー型まくらぎ用の
曲線区間対応型接合装置は、請求項２の接合装置におい
て、凹型接合板の円弧部と円筒部材が円周方向に締結用
ボルトの長孔を有することを特徴とする。このように締
結用ボルト孔を長孔とすることによって、敷設現場にお
いてラダー型まくらぎを曲線区間の曲率に対応させて接
合することができる。According to a sixth aspect of the present invention, there is provided a joining device for a ladder-type sleeper according to the second aspect of the present invention, wherein the arc portion of the concave joining plate and the cylindrical member are provided with fastening bolts in the circumferential direction. It has a long hole. By making the fastening bolt holes long, the ladder-type sleeper can be joined at the installation site in accordance with the curvature of the curved section.
【００１８】本発明の請求項７のラダー型まくらぎ用の
曲線区間対応型接合装置は、請求項３の接合装置におい
て、凸型接合板の円弧部と左右一対の接合板の円弧部が
円周方向に締結用ボルトの長孔を有することを特徴とす
る。このように、締結用ボルト孔を長孔とすることによ
って、敷設現場においてラダー型まくらぎを曲線区間の
曲率に対応させて接合することができる。According to a seventh aspect of the present invention, there is provided a joining device for a ladder-type sleeper according to a curved section, wherein the arc portion of the convex joining plate and the arc portion of the pair of left and right joining plates are circular. It has a long hole in the circumferential direction of the fastening bolt. In this way, by making the fastening bolt holes long, it is possible to join the ladder-type sleeper in accordance with the curvature of the curved section at the installation site.
【００１９】本発明の請求項８のラダー型まくらぎ用の
曲線区間対応型接合装置は、請求項４の接合装置におい
て、左右二対の接合板の円弧部と円筒部材が円周方向に
締結用ボルトの長孔を有することを特徴とする。According to an eighth aspect of the present invention, there is provided a joining device for a ladder type sleeper according to the fourth aspect of the present invention, wherein the circular arc portion of the two pairs of left and right joining plates and the cylindrical member are circumferentially fastened. It is characterized by having a long hole for a bolt for use.
【００２０】本発明の請求項９のラダー型まくらぎ用の
曲線区間対応型接合装置は、請求項１または５の接合装
置において、凸型接合板の円弧部と凹型接合板の円弧部
の接合面を球面状としたことを特徴とする。このよう
に、接合面を球面状としたことによって、前後のラダー
型まくらぎを水平面内ならびに垂直面内の二方向に傾け
て接合することができ、直線区間の接合ばかりでなく、
曲線区間の曲率に対応させて接合することができる。According to a ninth aspect of the present invention, there is provided a joining device for a curved section for a ladder type sleeper according to the first or fifth aspect, wherein the arc portion of the convex joining plate and the arc portion of the concave joining plate are joined. The surface is spherical. In this way, by making the joining surface spherical, the front and rear ladder-type sleepers can be joined by being inclined in two directions in the horizontal plane as well as in the vertical plane.
Joining can be performed according to the curvature of the curved section.
【００２１】本発明の請求項１０のラダー型まくらぎ用
の曲線区間対応型接合装置は、請求項２または６のラダ
ー型まくらぎの凹型接合板の円弧部と円筒部材の接合面
を球面状としたことを特徴とする。このように、接合面
を球面状としたことによって、前後のラダー型まくらぎ
を水平面内ならびに垂直面内の二方向に傾けて接合する
ことができ、直線区間の接合ばかりでなく、曲線区間の
曲率に対応させて接合することができる。According to a tenth aspect of the present invention, there is provided a ladder-type sleeper curved section corresponding type joining device, wherein the arcuate portion of the concave joining plate of the ladder type sleeper and the joining surface of the cylindrical member are spherical. It is characterized by having done. In this way, by making the joint surface spherical, the front and rear ladder-type sleepers can be joined by being inclined in two directions in the horizontal plane and the vertical plane, and not only in the straight section but also in the curved section. Joining can be performed according to the curvature.
【００２２】本発明の請求項１１のラダー型まくらぎ用
の曲線区間対応型接合装置は、請求項３または７のラダ
ー型まくらぎの凸型接合板の円弧部と左右一対の接合板
の円弧部の接合面を球面状としたことを特徴とする。こ
のように、接合面を球面状としたことによって、前後の
ラダー型まくらぎを水平面内ならびに垂直面内の二方向
に傾けて接合することができ、直線区間の接合ばかりで
なく、曲線区間の曲率に対応させて接合することができ
る。According to a eleventh aspect of the present invention, there is provided a ladder-type sleeper joint for curved sections, wherein the arc-shaped portion of the ladder-type sleeper and the arc-shaped portion of the pair of left and right jointed plates are provided. Is characterized in that the joining surface is spherical. In this way, by making the joint surface spherical, the front and rear ladder-type sleepers can be joined by being inclined in two directions in the horizontal plane and the vertical plane, and not only in the straight section but also in the curved section. Joining can be performed according to the curvature.
【００２３】本発明の請求項１２のラダー型まくらぎ用
の曲線区間対応型接合装置は、請求項４または８のラダ
ー型まくらぎの左右二対の接合板の円弧部と円筒部材の
接合面を球面状としたことを特徴とする。このように、
接合面を球面状としたことによって、前後のラダー型ま
くらぎを水平面内ならびに垂直面内の二方向に傾けて接
合することができ、直線区間の接合ばかりでなく、曲線
区間の曲率に対応させて接合することができる。According to a twelfth aspect of the present invention, there is provided a ladder-type sleeper-curve-section-type jointing device, comprising: a ladder-type sleeper according to claim 4 or 8; It is characterized by having a spherical shape. in this way,
By making the joint surface spherical, the front and rear ladder-type sleepers can be joined by being inclined in two directions in the horizontal plane and the vertical plane, and can be used not only for joining straight sections but also for curvature of curved sections Can be joined.
【００２４】[0024]
【発明の実施の形態】本発明の請求項１のラダー型まく
らぎ用の曲線区間対応型接合装置は、図１に示すとお
り、直線部１ａ、１ｂと円弧部２からなる凸型接合板３
と、直線部４ａ、４ｂと円弧部５からなる凹型接合板６
とからなる。ラダー型まくらぎの前部の左右の縦梁７
ａ、７ｂと後部の左右の縦梁８ａ、８ｂを接合する場合
は、前部の左右の縦梁７ａ、７ｂの側面端部に直線部１
ａ、１ｂをボルト９とナット１０で固定した凸型接合板
３の円弧部２と、後部の左右の縦梁８ａ、８ｂの側面端
部に直線部４ａ、４ｂをボルト９とナット１０で固定し
た凹型接合板６の円弧部５を接合させ、凸型接合板３の
円弧部２と凹型接合板６の円弧部５に穿孔した複数のボ
ルト孔にそれぞれボルト１１を通して締結する。なお、
１２はレール、１３は鋼管製継材、１４、１５は補強用
水平リブである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a ladder-type sleeper-type joint device for a ladder-type sleeper according to the present invention comprises a convex joining plate 3 comprising straight portions 1a and 1b and an arc portion 2. As shown in FIG.
And a concave joining plate 6 composed of linear portions 4a and 4b and an arc portion 5
Consists of Left and right vertical beams 7 in front of the ladder sleeper
When the left and right vertical beams 8a and 8b are joined to the rear left and right vertical beams 8a and 8b, the straight portions 1 are attached to the side edges of the front left and right vertical beams 7a and 7b.
a, 1b are fixed with bolts 9 and nuts 10 on the arcuate portion 2 of the convex joint plate 3, and straight portions 4a, 4b are fixed on the side edges of the left and right vertical beams 8a, 8b with bolts 9 and nuts 10. The circular arc portions 5 of the concave joint plate 6 are joined, and bolts 11 are fastened to a plurality of bolt holes drilled in the circular arc portion 2 of the convex joint plate 3 and the circular arc portion 5 of the concave joint plate 6, respectively. In addition,
12 is a rail, 13 is a steel pipe joint, and 14 and 15 are horizontal ribs for reinforcement.
【００２５】また、本発明の請求項２のラダー型まくら
ぎ用の曲線区間対応型接合装置は、図２に示すとおり、
直線部４ａ、４ｂと円弧部５からなる凹型接合板６と、
円筒部材２１とからなる。ラダー型まくらぎの前部の左
右の縦梁７ａ、７ｂと後部の左右の縦梁８ａ、８ｂを接
合する場合は、前部および後部の左右の縦梁７ａ、７ｂ
と８ａ、８ｂの対向する側面端部に、それぞれ各円弧部
５、５が円を形成するよう対向させて凹型接合板６の直
線部４ａ、４ｂをボルト９とナット１０で固定し、該円
内に円筒部材２１を嵌合して、各円弧部５、５および円
筒部材２１に穿孔した複数のボルト孔あるいはねじ孔に
それぞれボルト１１を通して締結する。FIG. 2 is a perspective view of a ladder-type sleeper according to a second embodiment of the present invention.
A concave joining plate 6 composed of straight portions 4a and 4b and an arc portion 5,
And a cylindrical member 21. When joining the left and right vertical beams 7a and 7b at the front and the left and right vertical beams 8a and 8b at the rear of the ladder-type sleeper, the front and rear left and right vertical beams 7a and 7b are used.
The straight portions 4a and 4b of the concave joining plate 6 are fixed with bolts 9 and nuts 10 so that the arc portions 5 and 5 respectively face the opposite side end portions of 8a and 8b so as to form a circle. The cylindrical member 21 is fitted therein, and the bolt 11 is fastened to each of the arc portions 5, 5 and a plurality of bolt holes or screw holes drilled in the cylindrical member 21.
【００２６】前記凸型接合板３および凹型接合板６の各
直線部１ａ、１ｂ、４ａ、４ｂには、ラダー型まくらぎ
の縦梁に取付けるためのボルト孔あるいはねじ孔を穿孔
しておき、縦梁に穿孔しておいたボルト孔あるいはねじ
孔に通したボルト９とナット１０で固定する。この場
合、縦梁に加わる負担を低減するには、縦梁の外側にボ
ルト孔を穿孔した補助座板を当接させて固定するのが効
果的である。Each of the straight portions 1a, 1b, 4a and 4b of the convex joint plate 3 and the concave joint plate 6 is provided with a bolt hole or a screw hole for attachment to a vertical beam of a ladder-type sleeper. The beam is fixed by bolts 9 and nuts 10 which are passed through bolt holes or screw holes drilled in the beam. In this case, in order to reduce the load applied to the vertical beam, it is effective to abut and fix an auxiliary seat plate having a bolt hole to the outside of the vertical beam.
【００２７】前記凸型接合板３および凹型接合板６の各
円弧部２、５には、図１の凸型接合板３と凹型接合板６
あるいは図２の各凹型接合板６と円筒部材２１を締結す
るためのボルト孔あるいはねじ孔を穿孔しておき、凸型
接合板３と凹型接合板６あるいは各凹型接合板６と円筒
部材２１をボルトで締結する。この場合、凸型接合板３
と凹型接合板６の締結においては、凸型接合板３または
凹型接合板６の一方あるいは双方のボルト孔（ねじ孔の
場合は一方のみ）を円周方向に長孔としておくことによ
って、同一の部材で必要な路線の曲線に対応することが
できる。また、各凹型接合板６と円筒部材２１の締結に
おいては、各凹型接合板６の円弧部５で形成した円内に
円筒部材２１を嵌合して締結する。この円筒部材２１の
ボルト孔を円周方向に長孔としておくことによって、同
一の部材で必要な路線の曲線に対応することができる。Each of the arc portions 2 and 5 of the convex bonding plate 3 and the concave bonding plate 6 has the convex bonding plate 3 and the concave bonding plate 6 shown in FIG.
Alternatively, bolt holes or screw holes for fastening the concave joining plates 6 and the cylindrical member 21 of FIG. 2 are formed in advance, and the convex joining plate 3 and the concave joining plate 6 or each concave joining plate 6 and the cylindrical member 21 are connected. Fasten with bolts. In this case, the convex bonding plate 3
When fastening the concave joint plate 6 and the concave joint plate 6, one or both of the convex joint plate 3 and the concave joint plate 6 have bolt holes (only one in the case of a screw hole) formed in the circumferential direction as elongated holes, so that the same hole is formed. The member can correspond to the curve of the required route. Further, in fastening the concave joining plate 6 and the cylindrical member 21, the cylindrical member 21 is fitted and fastened in a circle formed by the arc portion 5 of each concave joining plate 6. By making the bolt holes of the cylindrical member 21 elongated in the circumferential direction, it is possible to use the same member to cope with a curve of a necessary line.
【００２８】前記凸型接合板３および凹型接合板６の直
線部１ａ、１ｂ、４ａ、４ｂと円弧部２、５の間には、
補強用水平リブ１４、１５を設け、必要な強度、曲げ剛
性を満足させる。この補強用水平リブ１４、１５は、ラ
ダー型まくらぎの縦梁への取付けが許されるのであれ
ば、直線部１ａ、１ｂ、４ａ、４ｂと円弧部２、５の間
を満たす形で取付けすることもできるし、強度、重量の
観点から、直線部１ａ、１ｂ、４ａ、４ｂの中央に１枚
あるいは上下に２枚取付けすることもできる。さらに、
前記凸型接合板３および凹型接合板６の直線部１ａ、１
ｂ、４ａ、４ｂ、円弧部２、５ならびに補強用水平リブ
１４、１５は、必要な強度、曲げ剛性を満足できれば、
機械加工した後溶接で取付けてもよく、また、鋳込みに
より鋳造することもできる。Between the straight portions 1a, 1b, 4a, 4b and the arc portions 2, 5 of the convex bonding plate 3 and the concave bonding plate 6,
Reinforcement horizontal ribs 14 and 15 are provided to satisfy required strength and bending rigidity. These reinforcing horizontal ribs 14 and 15 should be mounted so as to fill between the linear portions 1a, 1b, 4a and 4b and the arc portions 2 and 5, if the mounting of the ladder-type sleepers to the vertical beams is permitted. Alternatively, from the viewpoint of strength and weight, it is also possible to mount one or two vertically at the center of the linear portions 1a, 1b, 4a, 4b. further,
Straight portions 1a, 1 of the convex bonding plate 3 and the concave bonding plate 6
b, 4a, 4b, the arc portions 2, 5 and the reinforcing horizontal ribs 14, 15 are provided if the required strength and bending rigidity can be satisfied.
After machining, it may be attached by welding, or it may be cast by casting.
【００２９】本発明の請求項３のラダー型まくらぎ用の
曲線区間対応型接合装置は、図３に示すとおり、直線部
１ａ、１ｂと円弧部２からなる凸型接合板３と、直線部
３１と円弧部３２からなる左右一対の接合板３３からな
る。ラダー型まくらぎの前部の左右の縦梁７ａ、７ｂの
側面端部に直線部１ａ、１ｂをボルト９とナットにより
固定した凸型接合板３の円弧部２と、後部の左右の縦梁
８ａ、８ｂの対向する側面端部にそれぞれ直線部３１を
ボルト９とナットにより固定した接合板３３の円弧部３
２を、接合させてボルト３４により締結する。この場合
は、図１の凹型接合板６の代わりに左右に分割した接合
板３３を用いることにより、接合装置の重量を低減する
ことができる。なお、３６は接合板３３の補強用水平リ
ブである。As shown in FIG. 3, the third embodiment of the present invention relates to a ladder-type sleeper-curve-section-type joining device, which comprises a convex joining plate 3 comprising straight portions 1a and 1b and a circular arc portion 2, and a straight joining portion. It comprises a pair of left and right joining plates 33 each composed of 31 and an arc portion 32. The arcuate portion 2 of the convex joint plate 3 in which linear portions 1a and 1b are fixed to the side end portions of the left and right vertical beams 7a and 7b at the front of the ladder sleeper, and the left and right vertical beams 8a at the rear. , 8b arc-shaped portions 3 of the joining plate 33 in which linear portions 31 are fixed to the opposite side end portions by bolts 9 and nuts, respectively.
2 are joined and fastened by bolts 34. In this case, the weight of the joining device can be reduced by using the joining plate 33 divided into right and left instead of the concave joining plate 6 of FIG. Reference numeral 36 denotes a reinforcing horizontal rib of the joining plate 33.
【００３０】本発明の請求項４のラダー型まくらぎ用の
曲線区間対応型接合装置は、図４に示すとおり、直線部
３１と円弧部３２からなる左右一対を組とする接合板３
３と円筒部材２１からなる。前部および後部の左右の縦
梁７ａ、７ｂ、８ａ、８ｂの対向する側面端部のそれぞ
れに、直線部３１をボルト９とナットにより固定した各
接合板３３の各円弧部３２の内周面に沿わせた円筒部材
２１をボルト３５により締結する。なお、３６は接合板
３３の補強用水平リブである。As shown in FIG. 4, the joining device for a ladder-type sleeper according to a fourth aspect of the present invention is a joining plate 3 having a pair of right and left parts each including a straight portion 31 and an arc portion 32.
3 and a cylindrical member 21. Inner peripheral surface of each arc portion 32 of each joining plate 33 in which a straight portion 31 is fixed to each of the opposed side end portions of the front and rear left and right vertical beams 7a, 7b, 8a, 8b by bolts 9 and nuts. Is fastened by bolts 35. Reference numeral 36 denotes a reinforcing horizontal rib of the joining plate 33.
【００３１】凸型接合板３、凹型接合板６、接合板３３
ならびに円筒部材２１の必要な強度、曲げ剛性は、材
質、板厚、ボルト寸法を選択することによって確保する
ことができる。凸型接合板３および凹型接合板６の円弧
部２、５は、必ずしも半円である必要はなく、接合装置
に要求される強度、曲げ剛性等を満たす範囲であれば、
例えば、接合板３３の円弧部３２のように３６°以上の
円弧形状でもよい。このように、接合板３３の円弧部３
２のように３６°以上の円弧形状等にすることによっ
て、ラダー型まくらぎの接合装置の重量を低減すること
ができる。The convex bonding plate 3, the concave bonding plate 6, the bonding plate 33
The necessary strength and bending rigidity of the cylindrical member 21 can be ensured by selecting the material, the plate thickness, and the bolt dimensions. The arc portions 2 and 5 of the convex joint plate 3 and the concave joint plate 6 do not necessarily have to be semicircular, as long as they satisfy the strength, bending rigidity, and the like required of the joining device.
For example, an arc shape of 36 ° or more like the arc portion 32 of the joining plate 33 may be used. Thus, the arc portion 3 of the joining plate 33
By making the shape of an arc of 36 ° or more as shown in 2, the weight of the ladder-type sleeper joining device can be reduced.
【００３２】凸型接合板３および凹型接合板６の直線部
１ａ、１ｂ、４ａ、４ｂは、ラダー型まくらぎの縦梁の
対向する側面端部に固定することに限定されるものでは
なく、前後の縦梁の対向する前後面を経由して外側面に
沿った形状とすることもできる。また、図５に示すとお
り、凸型接合板３の円弧部２あるいは円筒部材２１の下
面側に、縦梁下面から５０ｍｍ程度伸びる縦荷重抵抗板
５１を設けて補強することができる。The straight portion 1a of the convex joining plate 3 and the concave joining plate 6, 1b, 4 a, 4 b is not limited to be secured to the end face portion opposing the longitudinal beams of the ladder-type sleepers Alternatively, the shape may be formed along the outer surface via the front and rear surfaces of the front and rear vertical beams facing each other. Further, as shown in FIG. 5, a vertical load resistance plate 51 extending from the lower surface of the vertical beam by about 50 mm can be provided on the circular arc portion 2 of the convex bonding plate 3 or on the lower surface side of the cylindrical member 21 to reinforce it.
【００３３】図６に示すように、接合板６３の円弧部６
２と円筒部材６４の外周面の接合部を球面状とすること
ができる。同様に、図１の凸型接合板３の円弧部２や図
１、２の凹型接合板６の円弧部５および図３、４の接合
板３３の円弧部３２を球面状とすることができる。この
ように、接合面を球面状としたことによって、前後のラ
ダー型まくらぎを水平面内ならびに垂直面内の二方向に
傾けて接合することができ、直線区間の接合ばかりでな
く、曲線区間の曲率に対応させて接合することができ
る。As shown in FIG. 6, the arc portion 6 of the joining plate 63
The joint between the outer peripheral surface of the cylindrical member 64 and the outer peripheral surface of the cylindrical member 64 can be made spherical. Similarly, the arc portion 2 of the convex joining plate 3 of FIG. 1, the arc portion 5 of the concave joining plate 6 of FIGS. 1 and 2, and the arc portion 32 of the joining plate 33 of FIGS. . In this way, by making the joint surface spherical, the front and rear ladder-type sleepers can be joined by being inclined in two directions in the horizontal plane and the vertical plane, and not only in the straight section but also in the curved section. Joining can be performed according to the curvature.
【００３４】本発明のラダー型まくらぎ用の曲線区間対
応型接合装置は、縦梁の側面端部に凸型接合板３、凹型
接合板６あるいは接合板３３の直線部をボルトで固定す
る。これら凸型接合板３、凹型接合板６あるいは接合板
３３は、縦梁を製作する過程において出荷前に予め固定
しておくことにより、ラダー型まくらぎ設置現場での施
工性を向上させることができる。The curved section joint type joining apparatus for a ladder type sleeper according to the present invention fixes the straight portion of the convex joining plate 3, the concave joining plate 6 or the joining plate 33 to the side end of the longitudinal beam with bolts. The convex joint plate 3, concave joint plate 6, or joint plate 33 is fixed in advance before shipment in the process of manufacturing the vertical beam, thereby improving the workability at the ladder-type sleeper installation site. it can.
【００３５】[0035]
【実施例】実施例１ 本発明のラダー型まくらぎ用の曲線区間対応型接合装置
を用いて前後のラダー型まくらぎを接合する場合におい
て、在来線および新幹線を考慮して曲線区間のＲ３００
ｍ〜Ｒ１０００ｍ、縦梁断面寸法、上面幅４５０ｍｍ、
下面幅４６０ｍｍ、高さ１７５ｍｍのラダー型まくらぎ
長さ６ｍ、１２ｍにおける前後のまくらぎ間の必要最大
隙間を計算により求めた。その結果を表１に示す。Embodiment 1 When joining the front and rear ladder-type sleepers using the ladder-type sleeper curve section-compatible joining apparatus of the present invention, the R300 of the curved section is taken into account in consideration of the conventional line and the Shinkansen.
m-R1000m, vertical beam cross-sectional dimension, top width 450mm,
The required maximum gap between the front and rear sleepers in a ladder-type sleeper length of 6 m and 12 m having a lower surface width of 460 mm and a height of 175 mm was calculated. Table 1 shows the results.
【００３６】[0036]
【表１】 [Table 1]
【００３７】表１に示すとおり、まくらぎ間の必要最大
隙間は、曲線区間のＲ３００ｍの場合、ラダー型まくら
ぎ長さ６ｍで２０ｍｍ、１２ｍで４０ｍｍ、Ｒ４００ｍ
の場合、ラダー型まくらぎ長さ６ｍで１５ｍｍ、１２ｍ
で３０ｍｍ、Ｒ８００ｍの場合、ラダー型まくらぎ長さ
６ｍで７．５ｍｍ、１２ｍで１５ｍｍ、Ｒ１０００ｍの
場合、ラダー型まくらぎ長さ６ｍで６ｍｍ、１２ｍで１
２ｍｍであった。As shown in Table 1, the required maximum gap between sleepers is 20 mm for a ladder-type sleeper length of 6 m, 40 mm for 12 m, and R400 m for a curve section of R300 m.
In the case of ladder-type sleepers, length 6m 15mm, 12m
30mm, R800m, ladder-type sleeper length 6m 7.5mm, 12m 15mm, R1000m, ladder-type sleeper length 6m 6mm, 12m 1
2 mm.
【００３８】実施例２ 直線部の板厚２５ｍｍ、円弧部角度３８°、円弧部板厚
４０ｍｍ、直線部の上下端に厚さ２５ｍｍの補強用水平
リブを有する幅１７５ｍｍの４個の接合板と、内径８９
０ｍｍ、外径９６０ｍｍ、板厚３５ｍｍ、幅１７５ｍｍ
の円筒部材からなる円筒型接合装置を、許容応力２４５
ＭＰａの鋼材で製作した。この円筒型接合装置の各接合
板の直線部を許容応力５００ＭＰａのねじ部谷底径２０
ｍｍのボルト７本を用いて前後のラダー型まくらぎの縦
断面寸法が上面幅４５０ｍｍ、下面幅４６０ｍｍ、高さ
１７５ｍｍの縦梁の端部側面にそれぞれ固定したのち、
実施例１におけるまくらぎ間の必要最大隙間の４０ｍｍ
で、各接合板の円弧部に円筒部材を接合させて許容応力
５００ＭＰａのねじ部谷底径２７ｍｍのボルト１２本に
より締結した。接合された前後のラダー型まくらぎは、
縦梁部の接合部から１５８５ｍｍの位置を支持し、支持
部から７３５ｍｍの位置にモーメントが２２．５ｋＮ・
ｍ、４５ｋＮ・ｍとなるように荷重を加え、接合装置に
作用する最大応力および荷重方向の最大変位を測定し
た。なお、この荷重は、それぞれ疑似静的輪重および動
的輪重に対応するモーメント値である。Example 2 Four joining plates having a thickness of 25 mm in a straight portion, an arc portion angle of 38 °, a plate thickness of an arc portion of 40 mm, and a horizontal portion having a thickness of 25 mm at upper and lower ends of a straight portion having a width of 175 mm were used. , Inner diameter 89
0mm, outer diameter 960mm, plate thickness 35mm, width 175mm
A cylindrical joining device composed of a cylindrical member of
It was made of a steel material of MPa. The straight portion of each joining plate of this cylindrical joining device is screwed with an allowable stress of 500 MPa.
The longitudinal cross-sectional dimensions of the front and rear ladder-type sleepers are fixed to the end side surfaces of the longitudinal beam having an upper surface width of 450 mm, a lower surface width of 460 mm, and a height of 175 mm using seven bolts of 7 mm each.
40 mm of the required maximum gap between the sleepers in Example 1
Then, a cylindrical member was joined to the arc portion of each joining plate and fastened with twelve bolts having a permissible stress of 500 MPa and a thread root diameter of 27 mm. The ladder-type sleeper before and after joining
It supports the position of 1585 mm from the joint of the vertical beam, and the moment is 22.5 kN · at the position of 735 mm from the support.
m and a load of 45 kN · m, and the maximum stress acting on the joining device and the maximum displacement in the load direction were measured. Note that this load is a moment value corresponding to the pseudo static wheel load and the dynamic wheel load, respectively.
【００３９】試験の結果、載荷により接合装置あるいは
縦梁に損傷は認められず、接合装置に生じる最大応力
は、円筒部材の接合部下部に生じ、その値は２２．５ｋ
Ｎ・ｍのモーメントを加えた時で１３０ＭＰａ、４５ｋ
Ｎ・ｍのモーメントを加えた時で２４０ＭＰａで、鋼材
の設計許容値２４５ＭＰａ以下となっている。また、２
２．５ｋＮ・ｍのモーメントを加えた時の縦梁上面での
最大変位は、約４ｍｍで、縦梁単体の最大変位約３ｍｍ
の１．３倍程度であり、実用上の問題は認められなかっ
た。As a result of the test, no damage was found in the joining device or the vertical beam due to the loading, and the maximum stress generated in the joining device was generated at the lower part of the joining portion of the cylindrical member, and the value was 22.5 k
130MPa, 45k when a moment of Nm is applied
When a moment of N · m is applied, it is 240 MPa, which is below the design allowable value of the steel material of 245 MPa. Also, 2
The maximum displacement on the upper surface of the vertical beam when a moment of 2.5 kN · m is applied is about 4 mm, and the maximum displacement of the vertical beam alone is about 3 mm
This is about 1.3 times that of the above, and no practical problem was recognized.
【００４０】実施例３ 表２に示す縦断面寸法のラダー型まくらぎを、表２に示
す各種形状の接合板とボルトを用いて縦梁間間隔４０ｍ
ｍで接合したケース１〜６と、縦梁単体の場合の長さ２
４００ｍｍ（接合板を含む）の各モデルについて、下記
特徴を有する有限要素法解析モデル（以下ＦＥＭ解析モ
デルという）を用い、ケース１〜５、７では疑似静的輪
重に対するモーメント ： １５ｋＮ・ｍ、動的輪重に
対するモーメント ： ３０ｋＮ・ｍ、ケース６では疑
似静的輪重に対するモーメント： ２２．５ｋＮ・ｍ、
動的輪重に対するモーメント ： ４５ｋＮ・ｍなるよ
うに荷重を加えて、接合装置に作用する最大応力および
負荷モーメントに対する荷重方向の最大変位を解析し
た。その結果を表２に示す。なお、縦梁のヤング率Ｅｃ
＝３３０００ＭＰａを使用し、鋼材のヤング率Ｅｓ＝２
０６０００ＭＰａであるので、Ｅｓ／Ｅｃ＝６．２４で
ある。また、表２中の接合板形状欄の円弧型接合板Ａ
は、凸型接合板と凹型接合板の組合せ、円弧型接合板Ｂ
は、凸型接合板と接合板の組合せ、円筒型接合板Ｃは、
円筒部材と凹型接合板の組合せ、円筒型接合板Ｄは、円
筒部材と接合板の組合せを示す。Example 3 A ladder-type sleeper having a longitudinal cross-sectional dimension shown in Table 2 was connected to a vertical beam having a spacing of 40 m using various shapes of joining plates and bolts shown in Table 2.
Cases 1 to 6 joined by m and length 2 in the case of a single vertical beam
For each model of 400 mm (including the joint plate), a finite element method analysis model (hereinafter referred to as an FEM analysis model) having the following characteristics is used. In cases 1 to 5, and 7, a moment with respect to a pseudo static wheel load: 15 kN · m, Moment for dynamic wheel load: 30 kN · m, in case 6, moment for pseudo static wheel load: 22.5 kN · m,
Moment for dynamic wheel load: A load was applied so as to be 45 kN · m, and the maximum stress acting on the joining device and the maximum displacement in the load direction with respect to the applied moment were analyzed. Table 2 shows the results. The Young's modulus Ec of the vertical beam
= 33000 MPa, Young's modulus of steel Es = 2
Since it is 06000 MPa, Es / Ec = 6.24. Also, the arc-shaped joining plate A in the joining plate shape column in Table 2 is used.
Is a combination of a convex joint plate and a concave joint plate, an arc-shaped joint plate B
Is a combination of a convex bonding plate and a bonding plate, and a cylindrical bonding plate C is
A combination of a cylindrical member and a concave joining plate, and a cylindrical joining plate D indicate a combination of a cylindrical member and a joining plate.
【００４１】用いたＦＥＭ解析モデルの特徴は、下記の
とおりである。 １）、各種接合板を含めたモデル長さ ： ２４００ｍ
ｍ（片側縦梁長さ１１８０ｍｍ、縦梁間距離４０ｍｍ） ２）、縦梁と接合板との固定 ： 外径２０ｍｍのボル
ト使用 ３）、接合板と接合板との締結 ： 外径２７ｍｍのボ
ルト使用 ４）、接合板と縦梁とのボルト固定箇所は現行のプレー
ト方式での接合板締結箇所に準拠。 ５）、それぞれのボルトは円断面ビーム要素で近似さ
せ、ビーム径はねじ部谷底径とした。 ６）、縦梁ならびに接合板には三次元８節点アイソパラ
メトリック要素を使用。 ７）、縦梁と接合板および接合板と接合板との間にはギ
ャップ要素を挿入して接触を考慮。 ８）、載荷は端部から３５０ｍｍ内側の箇所にし、４点
曲げとした。したがって、設計負荷モーメントに対応す
る荷重として表３の値を用いた。The characteristics of the FEM analysis model used are as follows. 1) Model length including various joining plates: 2400m
m (length of longitudinal beam on one side is 1180 mm, distance between longitudinal beams is 40 mm) 2) Fixing of longitudinal beam to joining plate: use bolt with outer diameter of 20 mm 3), fastening between joining plate and joining plate: use bolt of outer diameter of 27 mm 4) The bolt fixing point between the joint plate and the vertical beam conforms to the joint plate fastening point in the current plate method. 5) Each bolt was approximated by a circular cross-section beam element, and the beam diameter was the thread root diameter. 6), 3D 8-node isoparametric elements are used for vertical beams and connecting plates. 7) A gap element is inserted between the vertical beam and the joint plate and between the joint plate and the joint plate to consider contact. 8) The load was 350 mm inward from the end, and was bent at four points. Therefore, the values in Table 3 were used as loads corresponding to the design load moment.
【００４２】[0042]
【表２】 [Table 2]
【００４３】[0043]
【表３】 [Table 3]
【００４４】表２に示すとおり、長さ２４００ｍｍの縦
梁単体に４点曲げモーメント３０ｋＮ・ｍを作用させた
時の最大変位／負荷モーメントは０．１０４ｍｍ／ｋＮ
・ｍであった。一方、縦梁を接合板で接合したモデルに
おいて３０ｋＮ・ｍの曲げモーメントを作用させたとき
の円弧型接合板の最大変位／負荷モーメントは、ケース
３の円弧型接合板Ｂの０．２８１ｍｍ／ｋＮ・ｍ、円筒
型接合板の最大変位は、ケース６の円筒型接合板Ｄの
０．３４７ｍｍ／ｋＮ・ｍで、ケース３の円弧型接合板
Ｂの最大変位／負荷モーメントは、縦梁単体の場合の約
２．７倍、ケース６の円筒型接合板Ｄの最大変位／負荷
モーメントは、縦梁単体の場合の約３．３倍であり、円
弧型接合板の方が若干曲げ剛性が大きい。As shown in Table 2, the maximum displacement / load moment when a 4-point bending moment of 30 kN · m is applied to a single vertical beam having a length of 2400 mm is 0.104 mm / kN.
M. On the other hand, when a bending moment of 30 kN · m is applied to a model in which a vertical beam is joined by a joining plate, the maximum displacement / load moment of the arc joining plate is 0.281 mm / kN of the arc joining plate B of the case 3. M, the maximum displacement of the cylindrical joining plate is 0.347 mm / kN · m of the cylindrical joining plate D of the case 6, and the maximum displacement / load moment of the arc joining plate B of the case 3 is The maximum displacement / load moment of the cylindrical joining plate D of the case 6 is about 3.3 times that of the case of the vertical beam alone, and the bending rigidity of the arc joining plate is slightly larger than that of the case of the vertical beam alone. .
【００４５】また、接合板の最大応力発生箇所は、円弧
型と円筒型共にほぼ接合中間部の接合板下部であった。
３０ｋＮ・ｍ曲げモーメントでの円弧型接合板の最大応
力値は、ケース２の円弧型接合板Ｂの２４６ＭＰａ、円
筒型接合板の最大応力値は、４５ｋＮ・ｍ曲げモーメン
トを負荷したケース６の円筒型接合板Ｄの３３１ＭＰａ
であった。さらに、締結ボルトの最大応力は、円弧型接
合板ではケース２の円弧型接合板Ｂの場合の４６６ＭＰ
ａ、円筒型接合板ではケース６の円筒型接合板Ｄの場合
の４３７ＭＰａであり、いずれも許容応力未満である。The location of the maximum stress on the joining plate was substantially at the lower portion of the joining plate in the middle of both the arc type and the cylindrical type.
The maximum stress value of the arc-shaped joining plate at a bending moment of 30 kN · m is 246 MPa for the arc-shaped joining plate B of Case 2, and the maximum stress value of the cylindrical joining plate is a cylinder of Case 6 loaded with a bending moment of 45 kN · m. 331MPa of mold joining plate D
Met. Further, the maximum stress of the fastening bolt is 466MP in the case of the arc-shaped joint plate B of the case 2 in the case of the arc-shaped joint plate.
a, In the case of the cylindrical bonding plate, the pressure is 437 MPa in the case of the cylindrical bonding plate D of the case 6, and each is less than the allowable stress.
【００４６】[0046]
【発明の効果】本発明の請求項１のラダー型まくらぎ用
の曲線区間対応型接合装置は、一方のラダー型まくらぎ
の左右縦梁の側面端部に直線部を固定した凸型接合板の
円弧部に、他方のラダー型まくらぎの左右縦梁の側面端
部に直線部を固定した凹型接合板の円弧部を接合させて
ボルトで締結するため、直線区間の接合ばかりでなく、
凸型接合板の円弧部と凹型接合板の円弧部を接合時一方
を回動させることによって、軌道の曲線区間であっても
接合可能となり、曲線区間に対応することができると共
に、十分な強度、曲げ剛性を有している。According to the first aspect of the present invention, there is provided a joining device for a ladder-type sleeper for a curved section corresponding to a curved joint for a ladder-type sleeper. In order to join the arc part of the concave joining plate where the straight part is fixed to the side end of the left and right vertical beam of the other ladder type sleeper to the arc part and fasten with bolts, not only the joining of the straight section,
By rotating one of the arc portion of the convex joint plate and the arc portion of the concave joint plate at the time of joining, it is possible to join even the curved section of the track, and it is possible to cope with the curved section and have sufficient strength. And has bending rigidity.
【００４７】また、本発明の請求項２のラダー型まくら
ぎ用の曲線区間対応型接合装置は、前後のラダー型まく
らぎの左右縦梁の側面端部に直線部を固定した凹型接合
板の円弧部で形成した円内に、円筒部材を嵌合させてボ
ルトで締結するため、直線区間の接合ばかりでなく、前
後の各凹型接合板の円弧部と円筒部材の接合時、一方ま
たは前後のラダー型まくらぎを回動させることによっ
て、軌道の曲線区間であっても接合可能となり、曲線区
間に対応することができると共に、十分な強度、曲げ剛
性を有している。According to a second aspect of the present invention, there is provided a joining device for a curved section for a ladder-type sleeper, wherein the arcuate shape of the concave joining plate in which a straight portion is fixed to the side end of the left and right vertical beams of the front and rear ladder-type sleepers. Because the cylindrical member is fitted into the circle formed by the part and fastened with bolts, not only the joining of the straight section, but also the joining of the cylindrical member with the arc part of each of the front and rear concave joining plates, one or the front and rear ladders By rotating the mold sleeper, it is possible to join even the curved section of the track, and it is possible to cope with the curved section and to have sufficient strength and bending rigidity.
【００４８】さらに、本発明の請求項３のラダー型まく
らぎ用の曲線区間対応型接合装置は、直線部と円弧部か
らなる凸型接合板と、直線部と円弧部からなる左右一対
の接合板とから構成され、前後のラダー型まくらぎの左
右の縦梁の側面端部のそれぞれに、前記各直線部を固定
するため、接合板の重量を一体型の凹型接合板に比べ軽
量化することができる。Further, according to a third aspect of the present invention, there is provided a joining device for a curved section corresponding to a ladder-type sleeper, comprising: a convex joining plate comprising a straight portion and an arc portion; and a pair of right and left joining portions comprising a straight portion and an arc portion. The joint plate is fixed to each of the side ends of the left and right longitudinal beams of the front and rear ladder sleepers, so that the weight of the joint plate is reduced as compared with the integrated concave joint plate. Can be.
【００４９】さらにまた、本発明の請求項４のラダー型
まくらぎ用の曲線区間対応型接合装置は、直線部と円弧
部からなる左右二対の接合板と、該接合板の各円弧部の
内周面に沿う円筒部材から構成され、前後両方のラダー
型まくらぎの左右の縦梁の各側面端部にそれぞれの直線
部を固定するため、接合板の重量を更に軽減できる。Further, according to a fourth aspect of the present invention, there is provided a joining device for a curved section corresponding to a ladder-type sleeper, wherein two pairs of right and left joining plates each comprising a straight portion and an arc portion, and each arc portion of the joining plate. It is composed of a cylindrical member along the inner peripheral surface, and since each straight portion is fixed to each side end of the left and right vertical beams of the front and rear ladder-type sleepers, the weight of the joining plate can be further reduced.
【００５０】本発明の請求項５〜８のラダー型まくらぎ
用の曲線区間対応型接合装置によれば、請求項１〜４の
ラダー型まくらぎにおいて、関係する凸型接合板の円弧
部、凹型接合板の円弧部、左右一対又は左右二対の接合
板の円弧部、及び円筒部材がそれぞれ円周方向に締結用
ボルトの長孔を有することにより、直線区間の接合ばか
りでなく、敷設現場における曲線区間にラダー型まくら
ぎの縦梁を対応させて接合することができる。According to the ladder-type sleeper joining apparatus of the fifth to eighth aspects of the present invention, in the ladder-type sleeper of the first to fourth aspects, the arc-shaped portion of the related convex joining plate, Since the arc portion of the concave joining plate, the arc portion of the pair of left and right or two pairs of left and right joining plates, and the cylindrical member each have a long hole in the circumferential direction for the fastening bolt, not only joining of the straight section, but also the laying site Ladder-shaped sleepers can be joined to the curved sections in the above.
【００５１】本発明の請求項９〜１２のラダー型まくら
ぎ用の曲線区間対応型接合装置によれば、請求項１〜４
のラダー型まくらぎにおいて、関係するラダー型まくら
ぎの凸型接合板の円弧部、凹型接合板の円弧部、接合板
の円弧部および円筒部材の接合面をそれぞれ球面状とす
ることにより、前後のラダー型まくらぎを水平面内なら
びに垂直面内の二方向に傾けて接合することができ、敷
設現場における直線区間の接合ばかりでなく、曲線区間
にラダー型まくらぎを対応させて接合することができ
る。According to the ladder-type sleeper-joint device for curved sections according to claims 9 to 12 of the present invention, claims 1 to 4 are provided.
In the ladder-type sleeper of the related, the arcuate portion of the convex joint plate of the relevant ladder-type sleeper, the arc portion of the concave joint plate, the arc portion of the joint plate and the joint surface of the cylindrical member, respectively, the front and rear, Ladder-type sleepers can be joined by being inclined in two directions in the horizontal and vertical planes, and not only joining straight sections at the installation site, but also joining ladder-type sleepers to curved sections .
【図１】本発明の請求項１の曲線区間対応型接合装置に
よるラダー型まくらぎの接合状況を示すもので、（ａ）
図は要部平面図、（ｂ）図は接合部の正面図である。FIG. 1 shows the joining condition of a ladder-type sleeper by a joining device for a curved section according to claim 1 of the present invention, wherein (a)
The figure is a plan view of a main part, and the figure (b) is a front view of a joint.
【図２】本発明の請求項２の曲線区間対応型接合装置に
よるラダー型まくらぎの接合状況を示す要部平面図であ
る。FIG. 2 is a plan view of a main part showing a joining state of a ladder-type sleeper by the joining device for curved sections according to a second embodiment of the present invention.
【図３】本発明の請求項３の曲線区間対応型接合装置に
よるラダー型まくらぎの接合状況を示す要部平面図であ
る。3 is a fragmentary plan view showing the joining conditions of the ladder-type sleepers according to curve segment corresponding junction device according to claim 3 of the present invention.
【図４】本発明の請求項４の曲線区間対応型接合装置に
よるラダー型まくらぎの接合状況を示す要部平面図であ
る。FIG. 4 is a plan view of a principal part showing a joining state of a ladder-type sleeper by the joining device for curved sections according to a fourth aspect of the present invention.
【図５】直線部と円弧部からなる凸型接合板の円弧部下
部に縦荷重抵抗板を連結した場合の部分斜視図である。FIG. 5 is a partial perspective view of a case where a vertical load resistance plate is connected to a lower portion of an arc portion of a convex joint plate formed of a straight portion and an arc portion.
【図６】図４の曲線区間対応型接合装置の接合面を球面
状とした場合の接合面部分を示す部分斜視図である。6 is a partial perspective view showing a joining surface portion of the joining device of the curved section corresponding type shown in FIG . 4 when the joining surface is spherical.
【図７】ラダー型まくらぎの斜視図である。FIG. 7 is a perspective view of a ladder-type sleeper.
【図８】従来のラダー型まくらぎの接合方法を示す斜視
図である。FIG. 8 is a perspective view showing a conventional ladder-type sleeper joining method.
１ａ、１ｂ、４ａ、４ｂ、３１、６１ 直線部 ２、５、３２、６２ 円弧部 ３ 凸型接合板 ６ 凹型接合板 ７ａ、７ｂ、８ａ、８ｂ、１０１ 縦梁 ９、１１、３４、３５、１１２ ボルト １０、１１３ ナット １２、１０３ レール １３、１０２ 鋼管製継材 １４、１５、３６、６５ 補強用水平リブ ２１、６４ 円筒部材 ３３、６３ 接合板 １０４ 締結装置 １１１ 添接板 1a, 1b, 4a, 4b, 31, 61 Linear portion 2, 5, 32, 62 Arc portion 3 Convex joining plate 6 Concave joining plate 7a, 7b, 8a, 8b, 101 Vertical beam 9, 11, 34, 35, 112 bolt 10, 113 nut 12, 103 rail 13, 102 steel pipe joint 14, 15, 36, 65 reinforcing horizontal rib 21, 64 cylindrical member 33, 63 joining plate 104 fastening device 111 attachment plate
───────────────────────────────────────────────────── フロントページの続き (72)発明者 元木 英夫 大阪市此花区島屋５丁目１番109号 住 金関西工業株式会社内 (72)発明者 中山 潔 大阪市此花区島屋５丁目１番109号 住 金関西工業株式会社内 (72)発明者 涌井 一 東京都国分寺市光町２丁目８番地38 財 団法人 鉄道総合技術研究所内 (72)発明者 井上 寛美 東京都国分寺市光町２丁目８番地38 財 団法人 鉄道総合技術研究所内 (72)発明者 奥田 広之 東京都国分寺市光町２丁目８番地38 財 団法人 鉄道総合技術研究所内 (72)発明者 松本 信之 東京都国分寺市光町２丁目８番地38 財 団法人 鉄道総合技術研究所内 (56)参考文献 特開 昭48−65605（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) E01B 3/12,3/22,3/38 E01B 3/46,3/48 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hideo Motoki 5-1-1109 Shimaya, Konohana-ku, Osaka-Sumi In Kankin Kansai Kogyo Co., Ltd. (72) Inventor Kiyoshi Nakayama 5-1-1109, Shimaya, Konohana-ku, Osaka-shi No. Sumikin Kansai Kogyo Co., Ltd. (72) Inventor Kazu Wakui 2-8-8 Hikaricho, Kokubunji-shi, Tokyo Inside the Railway Technical Research Institute (72) Inventor Hiromi Inoue 2--8 Hikaricho, Kokubunji-shi, Tokyo Address 38 Inside the Railway Technical Research Institute (72) Inventor Hiroyuki Okuda 2-8-8 Hikaricho, Kokubunji-shi, Tokyo Tokyo Metropolitan Institute of Railway Technology (72) Inventor Nobuyuki Matsumoto 2 Hikaricho, Kokubunji-shi, Tokyo 8-8 chome 38 Inside the Railway Technical Research Institute (56) References JP-A-48-65605 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) E01B 3 / 12,3 / 22,3 / 38 E01B 3 / 46,3 / 48
Claims (12)
接合する曲線区間でも接合可能な曲線区間対応型接合装
置であって、直線部と円弧部からなる凸型接合板と、直
線部と円弧部からなる凹型接合板から構成され、一方の
ラダー型まくらぎの左右縦梁の側面端部に直線部を固定
した凸型接合板の円弧部に、他方のラダー型まくらぎの
左右縦梁の側面端部に直線部を固定した凹型接合板の円
弧部を接合させてボルトで締結することを特徴とするラ
ダー型まくらぎ用の曲線区間対応型接合装置。1. A curved section-compatible joining apparatus which can join even a curved section in which a ladder-type sleeper is joined back and forth along a track, comprising: a convex joining plate comprising a straight portion and an arc portion; The ladder-type sleeper is composed of a concave joint plate consisting of an arcuate part, and the right and left vertical beams of the other ladder-type sleeper are fixed to the arc part of the convex joint plate with straight parts fixed to the side edges of the left and right vertical beams of one ladder-type sleeper A curved section-compatible joining device for a ladder-type sleeper, wherein an arc portion of a concave joining plate having a straight portion fixed to an end is joined and bolted.
接合する曲線区間でも接合可能な曲線区間対応型接合装
置であって、直線部と円弧部とからなる凹型接合板と、
該凹型接合板の円弧部に沿う円筒部材から構成され、前
後のラダー型まくらぎの左右縦梁の各側面端部に直線部
を固定した凹型接合板の円弧部で形成した円内に、円筒
部材を嵌合させてボルトで締結することを特徴とするラ
ダー型まくらぎ用の曲線区間対応型接合装置。2. A curved section-compatible joining apparatus which can join even a curved section in which a ladder-type sleeper is joined back and forth along a track, comprising: a concave joining plate comprising a straight portion and an arc portion;
The cylindrical member is formed of a cylindrical member that is formed of a cylindrical member along the arc portion of the concave joining plate, and is formed by the arc portion of the concave joining plate in which straight portions are fixed to the side end portions of the left and right vertical beams of the front and rear ladder-type sleepers. And a ladder-type sleeper for a curved section, which is fitted with a bolt and fastened with a bolt.
接合する曲線区間でも接合可能な曲線区間対応型接合装
置であって、直線部と円弧部からなる凸型接合板と、直
線部と円弧部からなる左右一対の接合板から構成され、
一方のラダー型まくらぎの左右縦梁の側面端部に直線部
を固定した前記凸型接合板の円弧部に、他方のラダー型
まくらぎの左右縦梁の側面端部にそれぞれ直線部を固定
した左右一対の前記接合板の各円弧部を接合させてボル
トで締結することを特徴とするラダー型まくらぎ用の曲
線区間対応型接合装置。3. A curved section-compatible joining apparatus which can join even a curved section in which a ladder-type sleeper is joined back and forth along a track, comprising: a convex joining plate comprising a straight portion and an arc portion; It is composed of a pair of left and right joining plates consisting of arc parts,
A straight part is fixed to the circular arc part of the convex joint plate in which a straight part is fixed to the side end part of the left and right vertical beam of one ladder-type sleeper, and a straight part is fixed to the side end part of the left and right vertical beam of the other ladder-type sleeper. A curved section corresponding type joining device for a ladder-type sleeper, wherein each arc portion of the pair of joining plates is joined and fastened with bolts.
接合する曲線区間でも接合可能な曲線区間対応型接合装
置であって、直線部と円弧部からなる左右二対の接合板
と、該接合板の各円弧部の内周面に沿う円筒部材から構
成され、前後両方のラダー型まくらぎの左右の縦梁の各
側面端部に直線部を固定した前記接合板の各円弧部に、
円筒部材を沿わせてボルトで締結することを特徴とする
ラダー型まくらぎ用の曲線区間対応型接合装置。4. A curved section corresponding type joining apparatus which can join even a curved section in which a ladder type sleeper is joined back and forth along a track, comprising two pairs of right and left joining plates comprising a straight portion and an arc portion. In each arc portion of the joining plate, which is formed of a cylindrical member along the inner peripheral surface of each arc portion of the joining plate, and where a straight portion is fixed to each side end of the left and right longitudinal beams of both front and rear ladder-type sleepers,
A ladder-type sleeper-curved section-compatible joining device, characterized in that the cylindrical member is fastened with bolts along the cylindrical member.
部が円周方向に締結用ボルトの長孔を有することを特徴
とする請求項１記載のラダー型まくらぎ用の曲線区間対
応型接合装置。5. The curved section for a ladder-type sleeper according to claim 1, wherein the arc portion of the convex joining plate and the arc portion of the concave joining plate have a long hole of a fastening bolt in a circumferential direction. Corresponding type joining device.
向に締結用ボルトの長孔を有することを特徴とする請求
項２記載のラダー型まくらぎ用の曲線区間対応型接合装
置。6. The joining device according to claim 2, wherein the arc portion and the cylindrical member of the concave joining plate have elongated holes in the circumferential direction for fastening bolts.
の円弧部が円周方向に締結用ボルトの長孔を有すること
を特徴とする請求項３記載のラダー型まくらぎ用の曲線
区間対応型接合装置。7. The ladder-type sleeper according to claim 3, wherein the arc portion of the convex joining plate and the arc portions of the pair of left and right joining plates have elongated holes for fastening bolts in the circumferential direction. Curved section compatible joining device.
円周方向に締結用ボルトの長孔を有することを特徴とす
る請求項４記載のラダー型まくらぎ用の曲線区間対応型
接合装置。8. The ladder-type sleeper type curved section-corresponding type according to claim 4, wherein the arc portion and the cylindrical member of the two pairs of right and left joining plates have elongated holes in the circumferential direction. Joining equipment.
部の接合面を球面状としたことを特徴とする請求項１ま
たは５記載のラダー型まくらぎ用の曲線区間対応型接合
装置。9. A ladder-type sleeper joint according to claim 1, wherein the joint surface between the arc portion of the convex joint plate and the arc portion of the concave joint plate is spherical. apparatus.
面を球面状としたことを特徴とする請求項２または６記
載のラダー型まくらぎ用の曲線区間対応型接合装置。10. The joining device according to claim 2, wherein a joining surface between the arc portion of the concave joining plate and the cylindrical member has a spherical shape.
板の円弧部を球面状としたことを特徴とする請求項３ま
たは７記載のラダー型まくらぎ用の曲線区間対応型接合
装置。11. The joining device according to claim 3, wherein the arc portion of the convex joining plate and the arc portions of the pair of left and right joining plates are spherical. .
の接合面を球面状としたことを特徴とする請求項４また
は８記載のラダー型まくらぎ用の曲線区間対応型接合装
置。12. The joining device according to claim 4 or 8, wherein the joining surfaces of the arc portions of the two pairs of left and right joining plates and the cylindrical member are spherical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15042497A JP3356652B2 (en) | 1997-05-23 | 1997-05-23 | Curved section-compatible joining device for ladder-type sleepers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15042497A JP3356652B2 (en) | 1997-05-23 | 1997-05-23 | Curved section-compatible joining device for ladder-type sleepers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10317302A JPH10317302A (en) | 1998-12-02 |
| JP3356652B2 true JP3356652B2 (en) | 2002-12-16 |
Family
ID=15496640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15042497A Expired - Fee Related JP3356652B2 (en) | 1997-05-23 | 1997-05-23 | Curved section-compatible joining device for ladder-type sleepers |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3356652B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104264534B (en) * | 2011-01-26 | 2016-08-31 | 北京知易普道技术有限责任公司 | Ladder-type sleepers |
| CN104264535B (en) * | 2011-01-26 | 2016-08-24 | 北京知易普道技术有限责任公司 | longitudinal sleeper |
| JP2021134496A (en) * | 2020-02-25 | 2021-09-13 | 公益財団法人鉄道総合技術研究所 | Ladder sleeper |
-
1997
- 1997-05-23 JP JP15042497A patent/JP3356652B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10317302A (en) | 1998-12-02 |
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