JPH0216201A - Track device for magnetically levitated railway - Google Patents
Track device for magnetically levitated railwayInfo
- Publication number
- JPH0216201A JPH0216201A JP437589A JP437589A JPH0216201A JP H0216201 A JPH0216201 A JP H0216201A JP 437589 A JP437589 A JP 437589A JP 437589 A JP437589 A JP 437589A JP H0216201 A JPH0216201 A JP H0216201A
- Authority
- JP
- Japan
- Prior art keywords
- holding member
- ground coil
- concrete
- embedded
- concrete wall
- 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.)
- Pending
Links
- 239000002184 metal Substances 0.000 claims description 5
- 238000005339 levitation Methods 0.000 claims description 4
- 239000011347 resin Substances 0.000 abstract description 15
- 229920005989 resin Polymers 0.000 abstract description 15
- 239000000853 adhesive Substances 0.000 description 8
- 230000001070 adhesive effect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Railway Tracks (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、地上コイルが設置された磁気浮上式鉄道用
軌道装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a magnetically levitated railway track system in which a ground coil is installed.
第14図は、例えば実開昭51−69211号公報に示
される地上コイルが使用された従来の磁気浮上式鉄道用
軌道装置を示す断面図で、L、 −L、線に対して対称
である。図において、(1)は断面がU字形状で側壁(
1a)と底壁(1b)とで構成されたコンクリート軌道
、(2)は側壁(1a)の内側部に埋め込まれたボルト
、(3)はコイル(3a) %樹脂(3b)とで構成さ
れた車両推進案内用の地上コイル、(4)は地上コイル
(3)の側面に形成されたリブ、(5)はリブ(4)に
設けられた取付穴、(6)はワッシャ、(7)はナツト
である。地上コイル(3)は取付穴(5)がボルト(2
)に嵌め合せられ、ワッシャ(6)を介してナツト(7
)で締め込まれて、側壁(1a)の内側部に固定されて
いる。FIG. 14 is a cross-sectional view showing a conventional magnetic levitation railway track device using a ground coil as disclosed in, for example, Japanese Utility Model Application Publication No. 51-69211, and is symmetrical with respect to the L, -L, and lines. . In the figure, (1) has a U-shaped cross section and a side wall (
A concrete track consisting of 1a) and a bottom wall (1b), (2) a bolt embedded in the inner side of the side wall (1a), and (3) a coil (3a) and a resin (3b). (4) is a rib formed on the side surface of the ground coil (3), (5) is a mounting hole provided in the rib (4), (6) is a washer, (7) is Natsuto. The ground coil (3) has the mounting hole (5) connected to the bolt (2).
) and then tighten the nut (7) through the washer (6).
) and is fixed to the inner side of the side wall (1a).
(8)は底壁(1b)の路面側に埋め込まれた車両浮と
用の地上コイルである。(8) is a ground coil for a vehicle float embedded in the road surface side of the bottom wall (1b).
次に動作について説明する。コンクリート軌道+114
=、の車両(図示せず)は地上コイル(8)にて浮上さ
れ、地上コイル(3)にて推進案内されて走行する。Next, the operation will be explained. Concrete track +114
A vehicle (not shown) is levitated by a ground coil (8) and travels while being propelled and guided by a ground coil (3).
従来の磁気浮上式鉄道用軌道装置においては、地上コイ
ル(3)が車両通過時の振動やリブ(4)のクリープ変
形により弛みが生じるため、その有無の点検および弛ん
でいる場合に増し締めをしなければならないという問題
点があった。In conventional magnetic levitation railway track systems, the ground coil (3) loosens due to vibrations when vehicles pass and creep deformation of the ribs (4), so check for the presence or absence and retighten if loosened. The problem was that it had to be done.
この発明は上記のような問題点を解消するためになされ
たもので、地上コイルをコンクリート軌道に確実に固着
できる磁気浮と式鉄道用軌道装置を(辱ることを目的と
する。This invention was made to solve the above-mentioned problems, and its purpose is to improve the magnetic floating type railway track system that can securely fix ground coils to concrete tracks.
この発明に係る磁気浮と式鉄道用軌道装置は、車両が走
行するコンクリート軌道の内側にあって。The magnetic floating railway track device according to the present invention is located inside a concrete track on which vehicles run.
地上コイルがU字形状の第1の保持部材で車両走行側か
ら抱き込まれ、第1の保持部材の開口端部を貫通した第
2の保持部材をコンクリート壁に埋め込んで、地上コイ
ルを固定したものである。The ground coil was held in from the vehicle running side by a U-shaped first holding member, and a second holding member that penetrated the open end of the first holding member was embedded in a concrete wall to fix the ground coil. It is something.
また、地上コイルがU字形状の第1の保持部材で車両走
行側から抱き込まれ、第1の保持部材の関口端部を貫通
し1こ第2の保持部材と、第1の保持部材の端部に第2
の保持部材と直角方向に接合した第3の保持部材をコン
クリート壁に埋め込んで、地上コイルを固定してもよい
。Also, the ground coil is held in from the vehicle running side by the U-shaped first holding member, passes through the end of the entrance of the first holding member, and is connected to the second holding member and the first holding member. 2nd at the end
A third holding member joined at right angles to the holding member may be embedded in a concrete wall to fix the ground coil.
さらに、地上コイルがU字形状の第1の保持部材で車両
走行側から抱き込まれ、第1の保持部材の両端部に埋め
込まれた金具と接合した第2の保持部材をコンクリート
壁に埋め込んで、地上コイルを固定したものでもよい。Furthermore, the ground coil is held in from the vehicle running side by a U-shaped first holding member, and a second holding member is embedded in the concrete wall, which is joined to metal fittings embedded in both ends of the first holding member. , a fixed ground coil may also be used.
この発明においては、地上コイルは各保持部材で保持さ
れてコンクリート壁に埋め込まれ、一体止されて強固に
固着される。In this invention, the ground coil is held by each holding member, embedded in a concrete wall, and fixed integrally and firmly fixed.
以下、この発明の一実施例を図について説明する。第1
図〜第3図において、コンクリート軌道(1)、底壁(
1b)は第14図における従来の装置と同様のものであ
る。(9a)はコイル、 (9b)はコイル(9a)
を一体成形する樹脂で、断面が台形で、台形のt辺(9
C)が車両の走行側(A)に位置するように形成されて
いる。(9)はコイル(9a)、樹脂(9b)で構成さ
れtこ車両推進案内用の地上コイルで、中心軸方向で車
両走行側(A)のと辺(9C)がコンクリート軌道(1
)の車両走行側の側壁(IC)の外面と同一になるよう
に複数個のU字形状の第1の保持部材(101で車両走
行側(A)から抱き込まれる。An embodiment of the present invention will be described below with reference to the drawings. 1st
In Figures to Figure 3, the concrete track (1), the bottom wall (
1b) is similar to the conventional device in FIG. (9a) is a coil, (9b) is a coil (9a)
It is a resin that is integrally molded with a trapezoidal cross section, and the t side of the trapezoid (9
C) is located on the travel side (A) of the vehicle. (9) is a ground coil for vehicle propulsion and guidance, which is composed of a coil (9a) and a resin (9b), and the side (9C) on the vehicle running side (A) in the direction of the central axis is the concrete track (1
) is held in from the vehicle travel side (A) by a plurality of U-shaped first holding members (101) so as to be flush with the outer surface of the side wall (IC) on the vehicle travel side.
gPJlの保持部材0■は内側形状が地上コイル(9)
の断面のL辺(9C)および側面(9d)に沿うように
繊維強化樹脂で成形されているc0υは第1の保持部材
(101に設けられた穴部で、第2の保持部材02)が
通され、側壁(IC)に埋め込まれ一体成形されてコン
クリート軌道(1)に固着されている。The inner shape of gPJl's holding member 0■ is a ground coil (9)
c0υ, which is molded with fiber-reinforced resin along the L side (9C) and side surface (9d) of the cross section, is the hole provided in the first holding member (101), and the second holding member 02 It is embedded in the side wall (IC), integrally molded, and fixed to the concrete track (1).
以上のように、地上コイル(9)は繊維強化樹脂で成形
されtコ第1の保持部材OGで抱き込まれ、第2の保持
部材α′2Jに固定されてコンクリート軌道(1)に埋
め込まれ、一体成形されて固着されている。As described above, the ground coil (9) is molded from fiber-reinforced resin, held in the first holding member OG, fixed to the second holding member α'2J, and embedded in the concrete track (1). , integrally molded and fixed.
このようにして固着された地上コイル(9)は、車両通
過時の振動や樹脂(9b)のクリープ等により影響を受
けることがなくなる。The ground coil (9) fixed in this way is not affected by vibrations caused by passing vehicles, creep of the resin (9b), etc.
また、上記実施例では第1の保持部材(101の穴部0
0と第2の保持部材02)との隙間をコンクリートで埋
めTこものを示しtこが、第4図に示すように穴部00
と鉄筋02)との隙間を予め樹脂等の接着剤日で埋め1
こ後にコンクリートで一体成形してもよい。Further, in the above embodiment, the first holding member (hole 0 of 101
Fill the gap between the hole 00 and the second holding member 02) with concrete, as shown in Figure 4.
Fill the gap between the and reinforcing bars 02) with adhesive such as resin in advance 1
It may be integrally molded with concrete after this.
この場合は、側壁(IC)への地上コイル(9)の固着
は接着剤(131によって一層強固なものとなる。In this case, the fixation of the ground coil (9) to the side wall (IC) is further strengthened by the adhesive (131).
ま1こ、第1の保持部材(101と地上コイル(9)と
の隙間を樹脂等の接着剤口3で充てんすれば固着はなお
更強固なものとなる。Alternatively, if the gap between the first holding member (101) and the ground coil (9) is filled with an adhesive port 3 made of resin or the like, the fixation will be even stronger.
第5図〜第9図に他の発明の一実施例を示す。Another embodiment of the invention is shown in FIGS. 5 to 9.
図において、αJは第1の保持部材0ωの端部に接合さ
れ1こ第3の保持部材で、第2の保持部材α乃と直角方
向に配され溶接金具部α荀で接着剤Q51によって第1
の保持部材00)に接合され、側壁(IC)に埋め込ま
れ一体成形されてコンクリート軌道(1)に固着されて
いる。In the figure, αJ is a third holding member that is joined to the end of the first holding member 0ω, and is arranged perpendicularly to the second holding member α and is attached to the welding fitting part α by adhesive Q51. 1
It is joined to the holding member 00), embedded in the side wall (IC), integrally molded, and fixed to the concrete track (1).
以上のように、地上コイル(9)は繊維強化樹脂で成形
され1こ第1の保持部材0ωで抱き込まれ、第2の保持
部材02)及び第3の保持部材13に固定されてコンク
リート軌道(1)に埋め込まれ、一体成形されて固着さ
れている。As described above, the ground coil (9) is molded from fiber-reinforced resin, is held by the first holding member 0ω, is fixed to the second holding member 02) and the third holding member 13, and is attached to the concrete track. It is embedded in (1) and is integrally molded and fixed.
このようにして固着され1こ地上コイル(9)は、車両
通過時の振動や樹脂(9b)のクリープ等により影響を
受けることがなくなる。The ground coil (9) fixed in this way is not affected by vibrations caused by passing vehicles, creep of the resin (9b), etc.
また、L記実施例では第1の保持部材QGIの穴部(1
0と第2の保持部材02)との隙間をコンクリートで埋
めたものを示しtニが、穴部00と鉄筋α乃との隙間を
予め樹脂等の接着剤u9で埋めた後にコンクリートで一
体成形してもよい。In addition, in the embodiment L, the hole (1) of the first holding member QGI is
The gap between the hole 00 and the second holding member 02) is filled with concrete; You may.
この場合は、側壁(IC)への地上コイル(91の固着
は接着剤−によって−層強固なものとなる。In this case, the ground coil (91) is firmly fixed to the side wall (IC) by the adhesive.
また、第1の保持部材Olと地上コイル(9)との隙間
を樹脂等の接着剤(15で充てんすれば固着はなお更強
固なものとなる。Furthermore, if the gap between the first holding member Ol and the ground coil (9) is filled with an adhesive (15) such as resin, the adhesion will become even stronger.
さらに、第10図〜第12図は他の発明の一実施例を示
す。図において、卵は第1の保持部材(101に埋め込
まれた金具で、第2の保持部材02)と接合され。Furthermore, FIGS. 10 to 12 show another embodiment of the invention. In the figure, the egg is joined to the first holding member (second holding member 02 with a metal fitting embedded in 101).
側壁(IC)に埋め込まれ一体成形されてコンクリート
軌道(1)に固着されている。It is embedded in the side wall (IC), integrally molded, and fixed to the concrete track (1).
以とのように、地上コイル(9)は繊維強化樹脂で成形
され現第1の保持部材Qlで抱き込まれ、第2の保持部
材02)に固定されてコンクリート軌道(1)に埋め込
まれ、一体成形されて固着されている。As described above, the ground coil (9) is molded from fiber-reinforced resin, is held in place by the first holding member Ql, is fixed to the second holding member 02), and is embedded in the concrete track (1). It is integrally molded and fixed.
このようにして固着された地上コイル(9)は、車両通
過時の振動や樹脂(9b)のクリープ等により影響を受
けることがなくなる。The ground coil (9) fixed in this way is not affected by vibrations caused by passing vehicles, creep of the resin (9b), etc.
ま1コ、第13図に示すように、第1の保持部材0ωと
地上コイル(9)との隙間を予め樹脂等の接着剤a3で
埋めた後にコンクリートで一体成形してもよい。Alternatively, as shown in FIG. 13, the gap between the first holding member 0ω and the ground coil (9) may be filled in advance with adhesive a3 such as resin and then integrally molded with concrete.
この場合は、側壁(IC)への地上コイル(9)の固着
は接着剤α3によって一層強固なものとなる。In this case, the fixation of the ground coil (9) to the side wall (IC) is further strengthened by the adhesive α3.
(発明の効果〕
以上のように、この発明によれば地上コイルをコンクリ
ート壁に埋設して、コンクリート壁に埋設されたU字形
状の第1の保持部材で地上コイルを保持し、第1の保持
部材の開口端部を貫通しコンクリート壁に埋設された第
2の保持部材で保持するようにしたので、地上コイルを
強固に保持できる。(Effects of the Invention) As described above, according to the present invention, a ground coil is buried in a concrete wall, the ground coil is held by a U-shaped first holding member buried in the concrete wall, and the ground coil is held by a U-shaped first holding member buried in the concrete wall. Since the second holding member penetrates through the open end of the holding member and is embedded in the concrete wall, the ground coil can be held firmly.
また、他の発明によれば、地上コイルをコンクリート壁
に埋設して、コンクリート壁に埋設されr: U字形状
の第1の保持部材で地上コイルを保持し、第1の保持部
材の開口端部を貫通しコンクリート壁に埋設されtコ第
2の保持部材及び、第2の保持部材と直角方向に配され
第1の保持部材に接合しコンクリート壁に埋設された第
3の保持部材で保持するようにしたので、地上コイルを
強固に保持できる。According to another invention, a ground coil is embedded in a concrete wall, and the ground coil is held by a U-shaped first holding member, and the open end of the first holding member is held by a U-shaped first holding member. It is held by a second holding member that penetrates through the section and is embedded in the concrete wall, and a third holding member that is disposed perpendicular to the second holding member and is joined to the first holding member and is embedded in the concrete wall. This makes it possible to firmly hold the ground coil.
さらに、他の発明によれば、地上コイルをコンクリート
壁に埋設して、コンクリート壁に埋設され1コU字形状
の第1の保持部材で地上コイルを保持し、第1の保持部
材の両端部に埋め込まれtコ金具と接合され、コンクリ
ート壁に埋設されtこ第2の保持部材で保持するように
したので、地上コイルを強固に保持できる。Furthermore, according to another invention, a ground coil is buried in a concrete wall, the ground coil is held by a first holding member embedded in the concrete wall and having a U-shape, and both ends of the first holding member are The ground coil is embedded in the concrete wall and connected to the metal fitting, and is held by the second holding member, so that the ground coil can be firmly held.
第1図はこの発明の一実施例を示す正面図、第2図は第
1のn−n線の断面図、第3図は第2図の要部を示す断
面図、第4図はこの発明の他の実施例を承す断面図、第
5図は他の発明の一実施例を示す正面図、第6図は第5
図の■−■線の断面図、第7図は第6図の要部を示す断
面図、第8図は第6図の要部を示す斜視図、第9図は他
の実施例を示す断面図、第10図はさらに他の発明の一
実施例を示す正面図、第11図は第10図のXI−XI
線の断面図、第12図は第11図の要部を示す断面図、
第13図は他の実施例を示す断面図、第14図は従来の
磁気浮立式鉄道用軌道装置を示す断面図で、L、−L、
線に対して対称である。図において、(IC)はコンク
リート軌道の側壁、(9)は地Lコイル、(101は第
1の保持部材、(1旧ま第2の保持部材、印は第3の保
持部材、G61は金具である。
なお、各図中同一符号は同−又は相当部分を示す・Fig. 1 is a front view showing one embodiment of the present invention, Fig. 2 is a sectional view taken along the first nn line, Fig. 3 is a sectional view showing the main part of Fig. 2, and Fig. 4 is a sectional view of this embodiment. 5 is a sectional view showing another embodiment of the invention, FIG. 6 is a front view showing another embodiment of the invention, and FIG.
7 is a sectional view showing the main parts of Fig. 6, Fig. 8 is a perspective view showing the main parts of Fig. 6, and Fig. 9 shows another embodiment. 10 is a front view showing another embodiment of the invention, and FIG. 11 is a cross-sectional view taken along line XI-XI in FIG. 10.
A cross-sectional view of the line, FIG. 12 is a cross-sectional view showing the main part of FIG. 11,
FIG. 13 is a cross-sectional view showing another embodiment, and FIG. 14 is a cross-sectional view showing a conventional magnetically levitated railway track system, with L, -L,
It is symmetrical about a line. In the figure, (IC) is the side wall of the concrete track, (9) is the ground L coil, (101 is the first holding member, (1 is the second holding member, the mark is the third holding member, and G61 is the metal fitting. In addition, the same reference numerals in each figure indicate the same or equivalent parts.
Claims (3)
記車両と対向するように地上コイルが設けられたものに
おいて、U字形状の底部が上記車両と対向するように上
記コンクリート壁に埋設された第1の保持部材の内部に
上記地上コイルを配置して上記地上コイルを上記コンク
リート壁に埋設し、上記第1の保持部材の両端部を上記
コンクリート壁の外面とほぼ平行に貫通した第2の保持
部材を上記コンクリート壁に埋設したことを特徴とする
磁気浮上式鉄道用軌道装置。(1) Ground coils are installed on concrete walls on both sides of the track on which the vehicle runs, facing the vehicle, and are embedded in the concrete wall so that the bottom of the U-shape faces the vehicle. The above-mentioned ground coil is disposed inside the first holding member, and the above-mentioned above-mentioned above-mentioned ground coil is buried in the concrete wall, and a second A magnetic levitation railway track device, characterized in that a holding member is embedded in the concrete wall.
記車両と対向するように地上コイルが設けられたものに
おいて、U字形状の底部が上記車両と対向するように上
記コンクリート壁に埋設された第1の保持部材の内部に
上記地上コイルを配置して上記地上コイルを上記コンク
リート壁に埋設し、上記第1の保持部材の両端部を上記
コンクリート壁の外面とほぼ平行に貫通した第2の保持
部材と上記第1の保持部材の両端部に上記第2の保持部
材とほぼ直角方向に接合された第3の保持部材を上記コ
ンクリート壁に埋設したことを特徴とする磁気浮上式鉄
道用軌道装置。(2) Ground coils are installed on concrete walls on both sides of the track on which the vehicle runs, facing the vehicle, and are embedded in the concrete wall so that the bottom of the U-shape faces the vehicle. The above-mentioned ground coil is disposed inside the first holding member, and the above-mentioned above-mentioned above-mentioned ground coil is buried in the concrete wall, and a second A magnetically levitated railway track characterized in that a third holding member is embedded in the concrete wall and is connected to both ends of the holding member and the first holding member in a direction substantially perpendicular to the second holding member. Device.
記車両と対向するように地上コイルが設けられたものに
おいて、U字形状の底部が上記車両と対向するように上
記コンクリート壁に埋設された第1の保持部材の内部に
上記地上コイルを配置して上記地上コイルを上記コンク
リート壁に埋設し、上記第1の保持部材の両端部に埋め
込まれた金具と上記コンクリート壁の外面とほぼ平行に
配置した第2の保持部材を接合し、上記コンクリート壁
に埋設したことを特徴とする磁気浮上式鉄道用軌道装置
。(3) Ground coils are installed on concrete walls on both sides of the track on which the vehicle runs, facing the vehicle, and are embedded in the concrete wall so that the bottom of the U-shape faces the vehicle. The ground coil is arranged inside the first holding member, and the ground coil is buried in the concrete wall, so that the metal fittings embedded in both ends of the first holding member are substantially parallel to the outer surface of the concrete wall. A magnetic levitation railway track device, characterized in that the arranged second holding members are joined and buried in the concrete wall.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP437589A JPH0216201A (en) | 1988-03-17 | 1989-01-10 | Track device for magnetically levitated railway |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63-66014 | 1988-03-17 | ||
JP6601488 | 1988-03-17 | ||
JP437589A JPH0216201A (en) | 1988-03-17 | 1989-01-10 | Track device for magnetically levitated railway |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0216201A true JPH0216201A (en) | 1990-01-19 |
Family
ID=26338124
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP437589A Pending JPH0216201A (en) | 1988-03-17 | 1989-01-10 | Track device for magnetically levitated railway |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0216201A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0393803U (en) * | 1990-01-18 | 1991-09-25 |
-
1989
- 1989-01-10 JP JP437589A patent/JPH0216201A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0393803U (en) * | 1990-01-18 | 1991-09-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPH09511556A (en) | Arrangement method and arrangement of functional member in support structure of road for vehicle directly connected to track, especially magnetic levitation type vehicle | |
US5655711A (en) | Prefabricated embedded railway track system | |
JPH0216201A (en) | Track device for magnetically levitated railway | |
JP2008089160A (en) | Hose bridge | |
JPH0216202A (en) | Track device for magnetically levitated railway | |
JPH06299501A (en) | Travelling path for magnetic levitation type car | |
JPH03135305A (en) | Magnetic levitation type railway track device | |
JPH0288356A (en) | Track device for magnetic levitation type railway | |
JPH09217317A (en) | Wind shut-off device of bridge | |
JPS6065802A (en) | Guide way for magnetic float railroad | |
KR102405827B1 (en) | Guard rail with reinforcement type of the upper part | |
JP2823935B2 (en) | Magnetic levitation railway cassette cover | |
JP2994189B2 (en) | Capsule transport pipeline and method of constructing the same | |
CN212404657U (en) | Multichannel monorail transit track roof beam | |
JPH0739284Y2 (en) | Rail branching device for suction type magnetic levitation carrier | |
JPH03144001A (en) | U-shape guide way for floating type railway | |
JP2593488Y2 (en) | Block for simple separator | |
JP2001115405A (en) | Magnetic levitataion rail structure and its construction method | |
JPH0717801U (en) | Rail track structure | |
KR200204594Y1 (en) | Upper arm mounting bracket in sandwich car body | |
JPH0462203A (en) | Track beam structure of divider | |
JPH07247505A (en) | Running road and superconductive magnetic levitation type railroad | |
JPS6326201B2 (en) | ||
JPH11158801A (en) | Joint block for ballast out flow prevention block | |
JPS61204401A (en) | Rail for magnetic float railroad |