JP4538664B2

JP4538664B2 - Ladder-shaped sleeper

Info

Publication number: JP4538664B2
Application number: JP2001117489A
Authority: JP
Inventors: 光雄塙; 彰久原田; 雄一郎堀; 雅一倉重; 徳之寺田; 牧人天津; 貞臣太田
Original assignee: NHK Spring Co Ltd; East Japan Railway Co
Current assignee: NHK Spring Co Ltd; East Japan Railway Co
Priority date: 2001-03-12
Filing date: 2001-03-12
Publication date: 2010-09-08
Anticipated expiration: 2021-03-12
Also published as: JP2002275802A

Description

【０００１】
【発明の属する技術分野】
本発明は、列車の車輪が接するレールを受けるまくらぎ、特に分岐器区間に使用するまくらぎに関する。
【０００２】
【従来の技術】
従来のまくらぎは、レールに対し鉛直方向に交差配置される所謂横まくらぎである。ところでこの横まくらぎは、レール長手方向に断続的にまくらぎが配置され、またまくらぎが単体であるため、列車がこの上を通過するとき局部的に大きな圧力を受けて、まくらぎが沈下しやすく、その復元のための頻繁な点検、保守が必要とされて来た。また、横まくらぎの左右の側面積が小さいためレールに横方向の力が加わると応力が小さくて動きやすい。さらに加えて、横まくらぎ同士のスパンが普通５００ｍｍ〜７００ｍｍあるため、レールにレールと平行に逆向きの力が作用したときも横まくらぎは動きやすい。
【０００３】
【発明が解決しようとする課題】
本発明は、従来のかかる実情に鑑みてなされたもので、まず、レール長手方向にまくらぎを配置することで、列車通過時のまくらぎに加わる圧力を緩和低減させる。次に、まくらぎのレール方向の断面積を大きくすることで、レールに横方向の力が加わったときの抵抗力を大きくしてまくらぎを動きにくくする。そしてさらに、まくらぎを梯子状に連続一体化することで、まくらぎ間の隙間がなくなり、レールに逆方向の力が加わったときもまくらぎを動きにくくするような梯子状まくらぎを提供する。
【０００４】
【課題を解決するための手段】
上記目的を達成するため、本発明による梯子状まくらぎは、ガラス繊維とウレタン樹脂の組合せより成り、鋼材質で断面がコ字形の金属板（９）の裏面全面が一体的に被着された横まくらぎ（２）と、鋼材質の金属より成り、横まくらぎ（２）の金属板（９）に溶接により接合される縦まくらぎ（３）と、縦まくらぎ（３）に取り付けられる短まくらぎ（２ａ）と、を備えることを特徴とする。
【０００５】
【実施例】
図１に、横まくらぎ２が、ガラス繊維とウレタン樹脂の組合わせより成り且つ縦まくらぎ３との交差接合部附近に鋼等剛性材質の金属板９を一体的に被着され、鋼等剛性材質の金属より成る縦まくらぎ３と、相互に溶接により接合した梯子状まくらぎ１が示される。なお、同図中２ａは、横まくらぎ２と横まくらぎ２の中間に介在させた短まくらぎ２ａである。
【０００６】
【発明の作用並びに効果】
本発明は以上のように、まくらぎをレール長手方向に配置し、道床とまくらぎの接触面積を大きくすることで、列車通過時のまくらぎに加わる圧力を緩和低減させることができた。また、まくらぎのレール方向の断面積を大きくすることで、レールに横方向の力が加わったときの抵抗力を大きくしてまくらぎを動きにくくすることができた。そしてさらに、まくらぎを梯子状に連続一体化することで、まくらぎ間の隙間がなくなり、レールに逆方向の力が加わったときもまくらぎを動きにくくすることができた。これまでの横まくらぎ方式に比べコストアップを余儀なくされるが、保守点検の手間が省け、安定した軌道が得られるものであり、特に分岐器区間に有効である。
【０００７】
【図面の簡単な説明】
【図１】本発明による梯子状まくらぎの斜視図
【０００８】
【符号の説明】
１梯子状まくらぎ
２横まくらぎ
２ａ短まくらぎ
３縦まくらぎ
９金属板[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sleeper that receives a rail with which a train wheel comes into contact, and more particularly, to a sleeper used in a turnout section.
[0002]
[Prior art]
A conventional sleeper is a so-called side sleeper that is arranged perpendicularly to a rail. By the way, this sleeper is intermittently placed in the longitudinal direction of the rail, and the sleeper is a single sleeper, so when the train passes over it, it receives a large pressure locally and the sleeper sinks. Therefore, frequent inspection and maintenance for its restoration have been required. Moreover, since the lateral area of the left and right side sleepers is small, when a lateral force is applied to the rail, the stress is small and it is easy to move. In addition, since the span between the side sleepers is usually 500 mm to 700 mm, the side sleepers are easy to move even when a reverse force acts on the rail in parallel to the rail.
[0003]
[Problems to be solved by the invention]
This invention is made | formed in view of this conventional situation, First, a sleeper is arrange | positioned in a rail longitudinal direction, and the pressure added to the sleeper at the time of a train passage is reduced and reduced. Next, by increasing the cross-sectional area of the sleeper in the rail direction, the resistance force when a lateral force is applied to the rail is increased to make the sleeper difficult to move. Furthermore, by integrating the sleepers into a ladder shape, we provide a ladder-like sleeper that eliminates the gaps between the sleepers and makes it difficult for the sleepers to move even when a reverse force is applied to the rail. .
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the ladder-like sleeper according to the present invention is made of a combination of glass fiber and urethane resin, and the entire back surface of the metal plate (9) made of steel and having a U-shaped cross section is integrally attached. The vertical sleeper (2) and the vertical sleeper (3) are made of a steel metal and are joined to the metal plate (9) of the horizontal sleeper (2) by welding and the vertical sleeper (3). And a short sleeper (2a).
[0005]
【Example】
In FIG. 1, a horizontal sleeper 2 is made of a combination of glass fiber and urethane resin, and a metal plate 9 made of a rigid material such as steel is integrally attached in the vicinity of the cross-joint portion with the vertical sleeper 3. A vertical sleeper 3 made of a rigid metal and a ladder sleeper 1 joined together by welding are shown. In the figure, reference numeral 2a denotes a short sleeper 2a interposed between the horizontal sleeper 2 and the horizontal sleeper 2.
[0006]
[Operation and effect of the invention]
As described above, according to the present invention , the sleeper is arranged in the rail longitudinal direction, and the contact area between the roadbed and the sleeper is increased, thereby reducing the pressure applied to the sleeper when passing through the train. In addition, by increasing the cross-sectional area of the sleeper in the rail direction, it was possible to increase the resistance force when a lateral force was applied to the rail and to make the sleeper difficult to move. Furthermore, by integrating the sleepers into a ladder shape, there was no gap between the sleepers, making it difficult for the sleepers to move even when a reverse force was applied to the rails. Although the cost is inevitably increased as compared with the conventional side sleeper method, it is possible to save maintenance work and obtain a stable track, and is particularly effective in the branching section.
[0007]
[Brief description of the drawings]
FIG. 1 is a perspective view of a ladder-shaped sleeper according to the present invention.
[Explanation of symbols]
1 Ladder-shaped sleeper 2 Horizontal sleeper
2a Short sleeper 3 Vertical sleeper 9 Metal plate

Claims

A horizontal sleeper (2) consisting of a combination of glass fiber and urethane resin, with the entire back surface of a steel plate (9) made of steel and having a U-shaped cross section integrally attached thereto,
A vertical sleeper (3) made of steel metal and joined by welding to the metal plate (9) of the horizontal sleeper (2);
A ladder-shaped sleeper comprising: a short sleeper (2a) attached to a vertical sleeper (3).