JPH0681301A - Vibration reducing rail and manufacture thereof - Google Patents
Vibration reducing rail and manufacture thereofInfo
- Publication number
- JPH0681301A JPH0681301A JP23355992A JP23355992A JPH0681301A JP H0681301 A JPH0681301 A JP H0681301A JP 23355992 A JP23355992 A JP 23355992A JP 23355992 A JP23355992 A JP 23355992A JP H0681301 A JPH0681301 A JP H0681301A
- Authority
- JP
- Japan
- Prior art keywords
- rail
- elastic body
- coated
- urethane resin
- vibration reducing
- 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.)
- Withdrawn
Links
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- Railway Tracks (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、鉄道の軌道等に用い
られる振動低減用レール及びその製造方法に関し、特
に、既設のレールに振動低減用の弾性体を配設する際の
施工対策に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration-reducing rail used for railroad tracks and a method of manufacturing the same, and more particularly to a construction measure for disposing an elastic body for reducing vibration on an existing rail.
【０００２】[0002]
【従来の技術】近年、鉄道沿線では列車走行時にレール
において生じる騒音や振動を低減しようとする要求が公
害問題として、ますます強くなっている。しかし、これ
から新設されるレールについての防音、振動対策には多
くの技術があるが、既設のレールにおける振動対策につ
いては技術的にも多くの制約があり、決め手に欠けると
いうのが現状である。2. Description of the Related Art In recent years, the demand for reducing noise and vibration generated on rails during running of trains along railway lines has become an increasingly serious pollution problem. However, although there are many technologies for soundproofing and vibration countermeasures for newly installed rails, the current situation is that there are many technical restrictions on countermeasures for vibrations on existing rails, and there is no deciding factor.
【０００３】従来知られているレールの振動低減対策を
挙げると、例えば特開昭４９−７１６０４号公報のもの
では、レール本体の頭部以外の全面を覆うような形状を
有する定形の弾性体を形成し、この弾性体をレール本体
に貼付けるように構成されている。As a conventional measure for reducing rail vibration, for example, in Japanese Patent Laid-Open No. 49-71604, a fixed elastic body having a shape that covers the entire surface of the rail body other than the head is used. The elastic body is formed and attached to the rail body.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記従
来のものでは、レール本体やレール本体間の接続部、ポ
イント切換部等、種々の形状に対応した定形の弾性体を
予め工場で製造しておき、それを現場で接着剤を用いな
がら貼付けなければならず、全体としてコストが高くつ
く。However, in the above-mentioned conventional one, a fixed elastic body corresponding to various shapes such as a rail main body, a connecting portion between rail main bodies, a point switching portion, etc. is manufactured in advance in a factory. , It must be attached on site using an adhesive, and the cost is high as a whole.
【０００５】また、現場で弾性体を接着剤（一般的には
常温接着剤）を用いてレール本体に一つ一つ貼付ける作
業に時間がかかり、しかも十分な接着強度が得られるま
で弾性体をレール本体に密着した状態に保持しなければ
ならず、手間もかかる。In addition, it takes time to attach the elastic bodies to the rail body one by one using an adhesive (generally, a room temperature adhesive) on site, and the elastic body is used until sufficient adhesive strength is obtained. Must be kept in close contact with the rail body, which is troublesome.
【０００６】さらに、接着強度のバラツキから接着面で
の剥離を生じ易く、剥離するとその部分での振動低減効
果が得られない。Further, due to the variation in adhesive strength, peeling is likely to occur on the bonding surface, and if peeled, the effect of reducing vibration at that portion cannot be obtained.
【０００７】この発明は斯かる諸点に鑑みてなされたも
のであり、その目的は、現場で振動低減用の弾性体をレ
ール本体に配設する作業が容易かつ短時間で行え、しか
も低コストな振動低減用レール及びその製造方法を実現
することにある。The present invention has been made in view of the above points, and an object thereof is to easily and quickly install an elastic body for vibration reduction on a rail body at a site and at a low cost. It is to realize a rail for vibration reduction and a manufacturing method thereof.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するた
め、この発明では、未硬化状態の速硬化性ウレタン系樹
脂をレール本体に吹付け塗装するようにした。In order to achieve the above object, in the present invention, an uncured fast-curing urethane resin is spray-painted on the rail body.
【０００９】具体的には、請求項１の発明に係る振動低
減用レールでは、レール本体表面の所定箇所に、未硬化
状態で該所定箇所に吹付け塗装された速硬化性ウレタン
系樹脂が硬化してなる弾性体を配設する。Specifically, in the vibration-reducing rail according to the first aspect of the present invention, a fast-curing urethane resin spray-coated on a predetermined portion of the surface of the rail body in an uncured state is cured. An elastic body is formed.
【００１０】請求項２の発明に係る振動低減用レールの
製造方法では、レール本体表面の所定箇所に、未硬化状
態の速硬化性ウレタン系樹脂を吹付け塗装し、上記速硬
化性ウレタン系樹脂を硬化させて弾性体を形成する。In the vibration reducing rail manufacturing method according to the second aspect of the present invention, the uncured quick-curing urethane resin is spray-coated on a predetermined portion of the surface of the rail body, and the above-mentioned quick-curing urethane resin is used. Is cured to form an elastic body.
【００１１】また、請求項３の発明では、上記請求項２
の発明において、未硬化状態の速硬化性ウレタン系樹脂
を、所定時間内で繰返し吹付け塗装する。According to the invention of claim 3, the above-mentioned claim 2 is adopted.
In the invention, the uncured, fast-curing urethane resin is repeatedly spray-coated within a predetermined time.
【００１２】[0012]
【作用】請求項１及び２の発明では、レール本体表面の
所定箇所に未硬化状態の速硬化性ウレタン系樹脂が吹付
けによって塗装されることにより、未硬化状態の速硬化
性ウレタン系樹脂からなる塗膜層がレール本体の被塗装
面上に得られる。未硬化状態の速硬化性ウレタン系樹脂
は不定形の粘性体であるので、このような粘性体を吹付
け塗装することにより得られる塗膜層は、被塗装面に大
小の凹凸等があって形状が複雑な場合でも良好に密着
し、かつ塗装ムラが少なく、厚さ寸法も略均一である。According to the first and second aspects of the present invention, the uncured quick-curing urethane resin is sprayed onto a predetermined portion of the surface of the rail body so that the uncured quick-curing urethane resin can be removed. The resulting coating layer is obtained on the coated surface of the rail body. Since the uncured fast-curing urethane resin is an amorphous viscous material, the coating layer obtained by spray coating such a viscous material has large and small irregularities on the surface to be coated. Even if the shape is complicated, it adheres well, there is little coating unevenness, and the thickness dimension is almost uniform.
【００１３】このような塗膜層の良好な状態は、吹付け
塗装によって得られるものであるが、吹付け作業自体は
比較的容易で熟練度もさほど必要とされず、しかも多量
のウレタン系樹脂を短時間で塗装するのに有利である。
そして、上記ウレタン系樹脂が硬化することにより、レ
ール本体によく密着し、しかも厚さ寸法が略均一な弾性
体が、レール本体表面の所定箇所において形成される。Such a good state of the coating layer is obtained by spray coating, but the spraying operation itself is relatively easy and does not require much skill, and a large amount of urethane resin is used. It is advantageous to paint in a short time.
Then, when the urethane resin is cured, an elastic body that adheres well to the rail body and has a substantially uniform thickness dimension is formed at a predetermined position on the surface of the rail body.
【００１４】請求項３の発明では、未硬化状態の速硬化
性ウレタン系樹脂の吹付け塗装が所定時間内で繰返され
ることにより、形成すべき弾性体の厚さ寸法がさらに均
一化され、一層バラツキの少ない振動低減効果が得られ
る。また、吹付け回数を通して厚さ寸法の管理が行われ
れば作業への信頼性が向上する。さらに、吹付け回数を
多くして厚膜化されれば振動低減効果が容易に高められ
る。According to the third aspect of the present invention, the spray coating of the fast-curing urethane resin in the uncured state is repeated within a predetermined time, so that the thickness of the elastic body to be formed can be made more uniform, and A vibration reducing effect with less variation can be obtained. Further, if the thickness dimension is controlled through the number of times of spraying, the reliability of the work is improved. Further, if the number of times of spraying is increased to increase the film thickness, the vibration reducing effect can be easily enhanced.
【００１５】[0015]
【実施例】以下、この発明に係る実施例を図面に基づい
て説明する。図１及び図２はこの実施例に係る振動低減
用レールを示し、該レールは図示しない鉄道の軌道に敷
設されている鉄道車両用の既設のレール本体１と、該レ
ール本体１表面の所定箇所、例えば走行車両の車輪及び
軌道内に敷き並べられている枕木等と接する部位以外の
両側部表面にそれぞれ配設された弾性体２，２で構成さ
れている。上記両側部表面とは、レール本体１の幅方向
両側に拡がった底部３の上面と、該底部３の幅方向中央
部に立設された腹部４の両側面と、該腹部４の上端に位
置する頭部５の下面とにかけてである。Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a vibration reducing rail according to this embodiment, which is an existing rail body 1 for a railway vehicle laid on a railroad track (not shown) and a predetermined portion on the surface of the rail body 1. For example, the elastic bodies 2 and 2 are provided on the surfaces of both side portions of the traveling vehicle other than the portions that come into contact with the wheels of the traveling vehicle and the sleepers that are lined up in the track. The above-mentioned both side surfaces are located on the upper surface of the bottom portion 3 which is widened on both sides in the width direction of the rail body 1, both side surfaces of the abdomen portion 4 which is erected at the center portion in the width direction of the bottom portion 3, and the upper end of the abdominal portion 4. And the lower surface of the head 5.
【００１６】上記弾性体２は、レール本体１の被塗装面
にスプレー等を用いて吹付け塗装された未硬化状態の速
硬化性ウレタン系樹脂としての速硬化性ポリウレタンが
硬化して形成されたものである。この種ポリウレタンと
しては、例えばポリオキシンプロプレングリコール（Ｐ
ＰＧ）−ポリテトラメチレングリコール（ＰＴＭＧ）−
ポリエーテルポリオール及び低分子量のアミン化合物・
触媒のブレンド物と、ＰＰＧ−メチルビスフェノールジ
イソシアネート（ＭＤＩ）系凝プレポリマーとを１０
０：７７の比で２液混合するもの等がある。また、上記
吹付け塗装に用いられるスプレーとしては、例えばＵＮ
ＩＰＲＥ ＧｍｂＨ社製の「ホットスプレーマシーン」
（形式：Ｇ＝４１／２Ｄ）等がある。The elastic body 2 is formed by curing a fast-curing polyurethane as a fast-curing urethane resin in an uncured state, which is spray-coated on the surface to be coated of the rail body 1 using a spray or the like. It is a thing. Examples of this type of polyurethane include polyoxine propylene glycol (P
PG) -Polytetramethylene glycol (PTMG)-
Polyether polyol and low molecular weight amine compound
The blend of the catalyst and the PPG-methylbisphenol diisocyanate (MDI) -based coagulation prepolymer 10
For example, two liquids are mixed at a ratio of 0:77. Moreover, as a spray used for the spray coating, for example, UN
"Hot spray machine" made by IPRE GmbH
(Type: G = 41 / 2D), etc.
【００１７】上記レール本体１の被塗装面には、下地処
理の１つとしてプライマが塗装されている。上記プライ
マとしてはウレタン系接着剤が好適であり、この種ウレ
タン系接着剤としては、例えば、住友バイエル社製の
「ポリオール＃０７５９」（主剤）と「スミジュール４
４Ｖ２０」（硬化剤）とを２：１でブレンドしたもの等
がある。The surface to be coated of the rail body 1 is coated with a primer as one of the surface treatments. A urethane-based adhesive is suitable as the primer, and examples of this type of urethane-based adhesive include “Polyol # 0759” (main agent) and “Sumijour 4” manufactured by Sumitomo Bayer.
4V20 ”(curing agent) in a 2: 1 blend.
【００１８】次に、上記弾性体２を既設のレール本体１
に形成して振動低減用レールを製造する方法について説
明する。先ず、レール本体１の被塗装面に必要に応じて
ショットブラストや溶剤の洗浄による下地処理が行われ
る。この下地処理は両方が順次行われてもよく、またど
ちらか一方のみが行われてもよい。上記下地処理の後、
被塗装面にもう１つの下地処理としてのプライマ塗装が
行われる。このプライマ塗装は吹付けや刷毛塗り等で行
われる。Next, the elastic body 2 is attached to the existing rail body 1
A method of manufacturing the rail for vibration reduction by forming the rail will be described. First, the surface to be coated of the rail body 1 is subjected to a surface treatment such as shot blasting or cleaning with a solvent if necessary. Both of the base treatments may be sequentially performed, or only one of them may be performed. After the above base treatment,
Another primer treatment is applied to the surface to be coated. This primer coating is performed by spraying or brush coating.
【００１９】上記下地処理が行われた後、未硬化状態の
速硬化性ポリウレタンがスプレー等によりレール本体１
の被塗装面に吹付け塗装される。１回の吹付け塗装によ
り形成される塗膜層の厚さ寸法は、０．３〜０．５ｍｍ
である。そして、上記塗膜層が所定の厚さ寸法になるよ
うに、上記吹付け塗装は必要に応じて所定時間（２０秒
〜３時間）の間に繰返して行われる。After the above-mentioned base treatment is performed, the uncured fast-curing polyurethane is sprayed or the like to form the rail body 1.
Is spray-painted on the surface to be painted. The thickness dimension of the coating layer formed by one spray coating is 0.3 to 0.5 mm.
Is. Then, the spray coating is repeatedly performed for a predetermined time (20 seconds to 3 hours) as necessary so that the coating layer has a predetermined thickness dimension.
【００２０】吹付け塗装作業の終了後、上記未硬化状態
の速硬化性ポリウレタンが硬化するのを待つ。吹付けか
ら３時間が経過した段階では、硬化したポリウレタンの
物性に比べて、弾性体２のスプリング硬さＨS は９０
％、引裂強さＴR は９０％、引張強さＴB は８０％にそ
れぞれ達する。また、吹付けから５時間が経過した段階
では、レール本体１に対する接着強度は８０％に達す
る。After completion of the spray coating operation, the curing of the fast curing polyurethane in the uncured state is waited for. At the stage where 3 hours have passed since the spraying, the spring hardness H S of the elastic body 2 is 90 compared with the physical properties of the cured polyurethane.
%, Tear strength T R is 90%, the tensile strength T B is reached, respectively 80%. In addition, the adhesive strength to the rail body 1 reaches 80% at the stage where 5 hours have passed since the spraying.
【００２１】この実施例によれば、未硬化状態の速硬化
性ポリウレタンからなる塗膜層を吹付け塗装によりレー
ル本体１表面の所定箇所に形成し、この塗膜層を硬化さ
せることにより弾性体２を上記所定箇所において形成す
ることができるので、レール本体１の形状に応じた略均
一な厚さ寸法の弾性体２を容易に形成することができ、
しかもこの弾性体２をレール本体１に貼付ける等の作業
は不要であり、かつ該弾性体２のレール本体１に対する
接着性は良好である。また、吹付けを繰返して行うこと
により弾性体２を任意の厚さ寸法に容易に形成すること
ができるので、必要に応じて厚さ寸法を部分的に異なら
せたり、吹付け回数により厚さ寸法の管理を行うように
することもできる。According to this embodiment, a coating layer made of fast-curing polyurethane in an uncured state is formed at a predetermined position on the surface of the rail body 1 by spray coating, and the coating layer is cured to give an elastic body. Since the 2 can be formed at the predetermined location, the elastic body 2 having a substantially uniform thickness dimension according to the shape of the rail body 1 can be easily formed,
Moreover, it is not necessary to attach the elastic body 2 to the rail main body 1 and the adhesion of the elastic body 2 to the rail main body 1 is good. Further, since the elastic body 2 can be easily formed to have an arbitrary thickness dimension by repeatedly performing the spraying, the thickness dimension can be partially changed as necessary, or the thickness can be changed depending on the number of times of spraying. It is also possible to manage the dimensions.
【００２２】以上のような作業をレール本体１の設置現
場で行う場合には、夜間等の列車運行頻度の少ない時間
帯を利用して行えば好適であるが、吹付け塗装は塗り継
ぎが比較的自由に行えるので、定形弾性材をレール本体
１に配設する従来の作業とは異なり、どの段階において
も速やかに中断することができ、列車通過時における現
場作業者の安全確保が容易に図られ、かつ列車運行への
支障も少ない。When the above-mentioned work is carried out at the installation site of the rail body 1, it is preferable to carry out the work at a time when trains are not frequently operated, such as at night. Since it can be done freely, unlike the conventional work of arranging the fixed elastic material on the rail body 1, it can be interrupted promptly at any stage, and it is easy to ensure the safety of field workers when passing trains. And there are few obstacles to train operation.
【００２３】尚、上記実施例では、既設のレールの場合
について説明したが、新設のレールの場合には、工場に
てレール本体表面の所定箇所に弾性体を形成して振動低
減用レールを製造した後、上記レールを現場にて敷設す
ればよい。この場合には、レール本体の走行車両の車輪
に接触する可能性のある部位以外の全面に弾性体を形成
することができるので、振動低減効果はさらに高められ
る。In the above embodiment, the case of an existing rail has been described. However, in the case of a new rail, a vibration reducing rail is manufactured by forming an elastic body at a predetermined location on the surface of the rail body at the factory. After that, the rails may be laid on site. In this case, since the elastic body can be formed on the entire surface of the rail body other than the portion that may come into contact with the wheels of the traveling vehicle, the vibration reducing effect is further enhanced.
【００２４】[0024]
【発明の効果】以上説明したように、請求項１及び２の
発明では、レール本体表面の所定箇所に吹付け塗装した
未硬化状態の速硬化性ウレタン系樹脂が硬化することに
より、上記所定箇所において弾性体を形成することがで
きるので、被塗装面の形状に応じた弾性体が作業場所に
て得られ、工場等で予め製造した定形の弾性体をレール
に装着する従来のものに比べて低コストである。しか
も、吹付け作業により弾性体を形成することができるの
で、作業は容易であり、かつ比較的短時間で行うことが
でき、さらに、形成された弾性体は厚さ寸法が略均一で
接着強度も十分であり、安定した振動低減効果を長期間
にわたって発揮することができる振動低減用レールを得
ることができる。As described above, according to the first and second aspects of the invention, the uncured quick-curing urethane resin spray-coated on the rail body surface at a predetermined location is cured to cure the predetermined location. Since an elastic body can be formed in, the elastic body according to the shape of the surface to be coated can be obtained at the work place, and compared with the conventional one in which a fixed elastic body manufactured in advance in a factory etc. is mounted on the rail. Low cost. Moreover, since the elastic body can be formed by the spraying operation, the work is easy and can be performed in a relatively short time. Further, the formed elastic body has a substantially uniform thickness dimension and an adhesive strength. Is sufficient, and it is possible to obtain a vibration reducing rail that can exert a stable vibration reducing effect for a long period of time.
【００２５】また、請求項３の発明では、吹付け回数に
より任意の厚さ寸法の弾性体を容易に形成することがで
きるので、弾性体の厚さ寸法における一層の均一化によ
る振動低減効果のさらなる安定化、及び弾性体の厚膜化
による振動低減効果の向上を容易に図ることができる。Further, according to the invention of claim 3, an elastic body having an arbitrary thickness can be easily formed depending on the number of times of spraying. Therefore, the vibration reducing effect can be obtained by further homogenizing the thickness of the elastic body. Further stabilization and the improvement of the vibration reduction effect due to the thickening of the elastic body can be easily achieved.
【図１】この発明の実施例に係る振動低減用レールを示
す部分斜視図である。FIG. 1 is a partial perspective view showing a vibration reducing rail according to an embodiment of the present invention.
【図２】振動低減用レールの横断面図である。である。FIG. 2 is a cross-sectional view of a vibration reducing rail. Is.
【符号の説明】 １ レール本体 ２ 弾性体[Explanation of symbols] 1 rail body 2 elastic body
Claims (3)
態で該所定箇所に吹付け塗装された速硬化性ウレタン系
樹脂が硬化してなる弾性体が配設されていることを特徴
とする振動低減用レール。1. An elastic body formed by curing a fast-curing urethane-based resin spray-coated in a predetermined position on the surface of the rail main body in an uncured state is provided at a predetermined position. Vibration reduction rail.
て、 レール本体表面の所定箇所に、未硬化状態の速硬化性ウ
レタン系樹脂を吹付け塗装し、 上記速硬化性ウレタン系樹脂を硬化させて弾性体を形成
することを特徴とする振動低減用レールの製造方法。2. A method for manufacturing a vibration-reducing rail, which comprises spraying an uncured urethane resin in an uncured state onto a predetermined portion of the surface of the rail body to cure the urethane resin. A method for manufacturing a rail for vibration reduction, characterized by forming an elastic body.
を、所定時間内で繰返し吹付け塗装することを特徴とす
る請求項２記載の振動低減用レールの製造方法。3. The method for producing a vibration reducing rail according to claim 2, wherein the uncured, fast-curing urethane resin is repeatedly spray-coated within a predetermined time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23355992A JPH0681301A (en) | 1992-09-01 | 1992-09-01 | Vibration reducing rail and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23355992A JPH0681301A (en) | 1992-09-01 | 1992-09-01 | Vibration reducing rail and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0681301A true JPH0681301A (en) | 1994-03-22 |
Family
ID=16956970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23355992A Withdrawn JPH0681301A (en) | 1992-09-01 | 1992-09-01 | Vibration reducing rail and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0681301A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030018035A (en) * | 2003-02-05 | 2003-03-04 | 이상덕 | a noise reducing structure for electric trains and its method |
| NL1021990C2 (en) * | 2002-11-25 | 2004-05-26 | Edilon Bv | Rail construction with cladding structure. |
| KR100467919B1 (en) * | 2002-04-10 | 2005-01-24 | (주)신승설계 | Preventing block for rail frictional sound and constructing method therefor |
| EP2333155A2 (en) * | 2009-11-18 | 2011-06-15 | Voestalpine Railpro BV | Electrical insulation rail joint and rail with coating |
| CN104088203A (en) * | 2014-04-01 | 2014-10-08 | 重庆邮电大学 | Human-simulating control method and device for orbital magnetorheological vibration isolation system under moving load |
| GB2563082A (en) * | 2017-06-02 | 2018-12-05 | Roland Norman Phillips | Rail damping system |
| CN112920377A (en) * | 2021-01-29 | 2021-06-08 | 青岛海力威新材料科技股份有限公司 | Polyurethane soft foam material for railway solidified track bed and preparation method thereof |
-
1992
- 1992-09-01 JP JP23355992A patent/JPH0681301A/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100467919B1 (en) * | 2002-04-10 | 2005-01-24 | (주)신승설계 | Preventing block for rail frictional sound and constructing method therefor |
| NL1021990C2 (en) * | 2002-11-25 | 2004-05-26 | Edilon Bv | Rail construction with cladding structure. |
| WO2004048696A1 (en) * | 2002-11-25 | 2004-06-10 | Edilon B.V. | Rail construction having a coating structure |
| KR20030018035A (en) * | 2003-02-05 | 2003-03-04 | 이상덕 | a noise reducing structure for electric trains and its method |
| EP2333155A2 (en) * | 2009-11-18 | 2011-06-15 | Voestalpine Railpro BV | Electrical insulation rail joint and rail with coating |
| CN104088203A (en) * | 2014-04-01 | 2014-10-08 | 重庆邮电大学 | Human-simulating control method and device for orbital magnetorheological vibration isolation system under moving load |
| CN104088203B (en) * | 2014-04-01 | 2016-02-03 | 重庆邮电大学 | The Human Simulating Intelligent Control Method of the magnetorheological vibrating isolation system of traveling load lower railway and device |
| GB2563082A (en) * | 2017-06-02 | 2018-12-05 | Roland Norman Phillips | Rail damping system |
| CN112920377A (en) * | 2021-01-29 | 2021-06-08 | 青岛海力威新材料科技股份有限公司 | Polyurethane soft foam material for railway solidified track bed and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19991102 |