JP2016173130A - Axle spring with fireproof cover - Google Patents

Axle spring with fireproof cover Download PDF

Info

Publication number
JP2016173130A
JP2016173130A JP2015053099A JP2015053099A JP2016173130A JP 2016173130 A JP2016173130 A JP 2016173130A JP 2015053099 A JP2015053099 A JP 2015053099A JP 2015053099 A JP2015053099 A JP 2015053099A JP 2016173130 A JP2016173130 A JP 2016173130A
Authority
JP
Japan
Prior art keywords
inert gas
cover
shaft spring
fireproof cover
fire
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2015053099A
Other languages
Japanese (ja)
Other versions
JP6542552B2 (en
Inventor
増田　武司
Takeshi Masuda
武司 増田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyo Tire Corp
Original Assignee
Toyo Tire and Rubber Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyo Tire and Rubber Co Ltd filed Critical Toyo Tire and Rubber Co Ltd
Priority to JP2015053099A priority Critical patent/JP6542552B2/en
Priority to DE102016104497.0A priority patent/DE102016104497B4/en
Priority to ATA134/2016A priority patent/AT517287B1/en
Priority to CN201610150820.8A priority patent/CN105987114B/en
Publication of JP2016173130A publication Critical patent/JP2016173130A/en
Application granted granted Critical
Publication of JP6542552B2 publication Critical patent/JP6542552B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
    • F16F1/3835—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type characterised by the sleeve of elastic material, e.g. having indentations or made of materials of different hardness
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/07—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
    • B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
    • B61F5/305—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes incorporating rubber springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
    • F16F1/393—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type with spherical or conical sleeves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
    • F16F1/393—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type with spherical or conical sleeves
    • F16F1/3935—Conical sleeves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2230/00—Purpose; Design features
    • F16F2230/0023—Purpose; Design features protective
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2230/00—Purpose; Design features
    • F16F2230/10—Enclosure elements, e.g. for protection

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Springs (AREA)
  • Vibration Prevention Devices (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an axle spring that can improve flame retardant property while maintaining durability and mechanical characteristic.SOLUTION: An axle spring with a fireproof cover includes: the axle spring with a rubber elastic body; and a cylindrical fireproof cover 7 mounted with respect to the axle spring so as to surround the rubber elastic body in an airtight manner. The fireproof cover 7 has flame retardant property and the interior of the fireproof cover 7 is filled with an inert gas.SELECTED DRAWING: Figure 1

Description

本発明は、大型建機や、大型船舶や、車両用、特に鉄道車両に好適に用いられる、難燃性に優れた軸ばねに関するものである。   The present invention relates to a shaft spring excellent in flame retardancy, which is suitably used for large construction machines, large ships, vehicles, and particularly railway vehicles.

従来、鉄道車両には、特許文献１に記載されるように、蛇行動や上下動時の衝撃を吸収緩和するために、台車枠と車軸側部材との間に軸ばねが介装されている。近年、欧州においては、様々な分野において防炎要件が厳しくなってきており、鉄道車両についても、新基準であるＥＮ４５５４５−２が制定されるに至っている。軸ばねは、ゴム状弾性体が使用されており、ゴム状弾性体について上記基準をクリアすることが要求される。上記基準では、ハロゲン含有ガスの発生量も厳しく制限される。ハロゲンを含まずに、上記基準を満たす樹脂として、たとえば、特許文献２に示すように、シリコーン系材料を使用することが知られている。   2. Description of the Related Art Conventionally, as described in Patent Document 1, a rail spring is provided with a shaft spring between a carriage frame and an axle-side member in order to absorb and relieve snake behavior and impact during vertical movement. . In recent years, in Europe, flameproofing requirements have become stricter in various fields, and a new standard EN455545-2 has been established for railway vehicles. A rubber-like elastic body is used for the shaft spring, and the rubber-like elastic body is required to satisfy the above criteria. According to the above criteria, the amount of halogen-containing gas generated is also severely limited. As a resin that does not contain halogen and satisfies the above criteria, for example, as shown in Patent Document 2, it is known to use a silicone material.

特開２００４−１６１４号公報JP 2004-1614 A 特表２００９−５０２４２５号公報Special table 2009-502425 gazette

しかしながら、軸ばねのように荷重がかかる過酷な環境下で使用されるゴム状弾性体において、現行品の耐久性及び機械的特性を保持しつつ、上記基準をも満足するレベルのものは得られていないのが現状である。   However, a rubber-like elastic body used in a harsh environment where a load is applied like a shaft spring has a level that satisfies the above standards while maintaining the durability and mechanical characteristics of the current product. The current situation is not.

そこで、本発明においては、現行品の耐久性及び機械的特性を保持しつつ、難燃性を向上させることが可能な軸ばねを提供することを目的とする。   Therefore, an object of the present invention is to provide a shaft spring capable of improving flame retardancy while maintaining the durability and mechanical characteristics of the current product.

上記課題を解決するため、本発明の一態様として、ゴム状弾性体を有する軸ばねと、前記軸ばねに対し、前記ゴム状弾性体を気密に囲むように取り付けられた筒状の防火カバーとを備え、前記防火カバーは難燃性を有し、前記防火カバー内が不活性ガスで充填されたことを特徴とする。   In order to solve the above problems, as one aspect of the present invention, a shaft spring having a rubber-like elastic body, and a cylindrical fireproof cover attached to the shaft spring so as to airtightly surround the rubber-like elastic body; The fireproof cover has flame retardancy, and the fireproof cover is filled with an inert gas.

上記構成によれば、難燃性を有する防火カバーによってゴム状弾性体を囲むため、軸ばね全体としての難燃性を高めることができる。さらに、ゴム状弾性体として従来の材料を使用することができるため、耐久性及び機械的特性を保持することが可能となる。   According to the said structure, since a rubber-like elastic body is enclosed by the fireproof cover which has a flame retardance, the flame retardance as the whole shaft spring can be improved. Furthermore, since a conventional material can be used as the rubber-like elastic body, durability and mechanical characteristics can be maintained.

さらに、上記態様では、防火カバー内を不活性ガスで充填したため、炎によって防火カバーの一部が破損した場合であっても、防火カバー内部に充填された不活性ガスにより、ゴム状弾性体の着火を遅らせることができる。不活性ガスは、ゴム状弾性体と、防火カバーとの間の空間に充填することができる。   Further, in the above aspect, since the inside of the fireproof cover is filled with the inert gas, even if a part of the fireproof cover is damaged by the flame, the inert gas filled in the fireproof cover causes the rubber-like elastic body. Ignition can be delayed. The inert gas can be filled in a space between the rubber-like elastic body and the fireproof cover.

また、防火カバーの上端部及び下端部は、締付バンドによって軸ばねに止着することもできる。これにより、気密性をより向上させることができ、長期間にわたって防火カバー内を不活性ガスで充填することができる。   Moreover, the upper end part and lower end part of a fireproof cover can also be fixed to a shaft spring by a fastening band. Thereby, airtightness can be improved more and the inside of a fireproof cover can be filled with an inert gas over a long period of time.

また、防火カバー内に不活性ガスを供給するガス供給装置と、ガス供給装置からの不活性ガスの供給を制御する制御部とが設けられた構成を採用することも可能である。時間経過とともに、防火カバー内の不活性ガスが徐々に空気と置換されるため、制御部は、所定時間経過ごとに防火カバー内に不活性ガスを供給することで、常時、防火カバー内の不活性ガス濃度を一定以上に保つことができる。   It is also possible to employ a configuration in which a gas supply device that supplies an inert gas into the fireproof cover and a control unit that controls the supply of the inert gas from the gas supply device are provided. Since the inert gas in the fire cover is gradually replaced with air as time elapses, the control unit supplies the inert gas into the fire cover every time a predetermined time elapses. The active gas concentration can be kept above a certain level.

さらに、防火カバー内のガスを排気する排気路を設け、排気路は、制御部によって開閉制御され、制御部は、防火カバー内に不活性ガスを供給するときに、排気路を開放し、不活性ガスの供給を停止するときに前記排気路を閉鎖する構成とすることができる。これにより、防火カバー内に侵入した空気を速やかに排気して、不活性ガスに再置換することが可能となる。   Further, an exhaust path for exhausting the gas in the fireproof cover is provided, and the exhaust path is controlled to be opened and closed by the control unit. When the inert gas is supplied into the fireproof cover, the control unit opens the exhaust path and The exhaust path can be closed when the supply of the active gas is stopped. This makes it possible to quickly exhaust the air that has entered the fireproof cover and replace it with an inert gas.

また、防火カバー内の異常を検知する異常検知センサを設け、制御部は、異常検知センサが異常を検知したときに、ガス供給装置から防火カバー内に不活性ガスを供給することも可能である。具体的には、防火カバーが炎によって一部破損したときに、ガス供給装置から連続して不活性ガスを供給することで、消火若しくは軸ばねの燃焼を遅延化することが可能となる。   In addition, an abnormality detection sensor for detecting an abnormality in the fire cover is provided, and the control unit can supply an inert gas from the gas supply device into the fire cover when the abnormality detection sensor detects an abnormality. . Specifically, when the fireproof cover is partially broken by a flame, it is possible to delay the fire extinguishing or the combustion of the shaft spring by continuously supplying the inert gas from the gas supply device.

本発明では、軸ばねのゴム状弾性体を気密に囲むように難燃性を有する防火カバーを取付けて、防火カバー内を不活性ガスで充填したため、耐久性及び機械的特性を保持しつつ、軸ばね全体としての難燃性を高めることができる。   In the present invention, a fireproof cover having flame resistance is attached so as to airtightly surround the rubber-like elastic body of the shaft spring, and the inside of the fireproof cover is filled with an inert gas, so that durability and mechanical characteristics are maintained, The flame retardance of the whole shaft spring can be increased.

本発明の第１実施形態の防火カバー付き軸ばねの正面図The front view of the axial spring with a fireproof cover of 1st Embodiment of this invention 締付バンドを示す平面図Top view showing the fastening band 本発明の第２実施形態の防火カバー付き軸ばねの正面概略図Schematic front view of a shaft spring with a fireproof cover according to a second embodiment of the present invention. 本発明の第３実施形態の防火カバー付き軸ばねの正面概略図Front schematic diagram of a shaft spring with a fireproof cover of a third embodiment of the present invention

［第１実施形態］
以下、本発明の実施形態について図面を基に説明する。図１は、本発明の第１実施形態を示す鉄道車両用の防火カバー付き軸ばねの正面図であり、右半分は断面を示す。図示のように、本実施形態の防火カバー付き軸ばねは、コニカルストッパー型の軸ばねに防火カバーが取り付けられた構成とされている。 [First Embodiment]
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a shaft spring with a fire protection cover for a railway vehicle showing a first embodiment of the present invention, and the right half shows a cross section. As shown in the figure, the shaft spring with a fire cover according to the present embodiment is configured such that a fire cover is attached to a conical stopper type shaft spring.

軸ばねは、軸ばねの中心軸ＣＡ上に配置される中心材１と、中心材１と同心上に配置される外筒２と、中心材１と外筒２との間に介装される弾性部３と、中心材１から下方に突設された芯軸４とを備えている。弾性部３は、ゴム状弾性体からなる弾性層５と、中間筒６とが交互に積層された積層ゴム構造とされ、中心材１及び外筒２とともに一体的に加硫成形される。   The shaft spring is interposed between the center member 1 disposed on the center axis CA of the shaft spring, the outer tube 2 disposed concentrically with the center member 1, and the center member 1 and the outer tube 2. An elastic portion 3 and a core shaft 4 projecting downward from the central member 1 are provided. The elastic portion 3 has a laminated rubber structure in which an elastic layer 5 made of a rubber-like elastic body and an intermediate cylinder 6 are alternately laminated, and is integrally vulcanized and molded together with the central member 1 and the outer cylinder 2.

具体的に、中心材１は円錐台形に形成され、その外周の全周にわたって弾性層５が環状に設けられ、断面ハ字状に形成される。弾性層５の外周側に外形が円錐台形状の金属等の硬質材料からなる中間筒６が配される。このように、弾性層５と中間筒６とが交互に配された積層ゴム構造をとることで弾性部３が形成される。軸ばねは、鉄道車両における車輪の中心の前後両側のそれぞれの位置において、中心軸ＣＡを上下垂直姿勢にした状態で台車枠（車体側部材の一例）と軸箱（車軸側部材の一例）との間に介装して用いられる。   Specifically, the central member 1 is formed in a truncated cone shape, and the elastic layer 5 is provided in an annular shape over the entire outer periphery of the central member 1 so as to have a cross-sectional shape. An intermediate cylinder 6 made of a hard material such as a metal having a truncated cone shape is disposed on the outer peripheral side of the elastic layer 5. Thus, the elastic part 3 is formed by taking the laminated rubber structure in which the elastic layers 5 and the intermediate cylinders 6 are alternately arranged. The shaft spring has a bogie frame (an example of a vehicle body side member) and a shaft box (an example of an axle side member) in a state where the central axis CA is in a vertically vertical position at each of the front and rear sides of the center of the wheel in a railway vehicle. It is used in between.

上記構成の軸ばねに取り付けられる防火カバー７は、ＥＮ４５５４５−２をクリアする難燃性を備えた弾性体から構成される。なお、防火カバー自体には、外部から荷重がかからず、軸ばねの変位に追随可能な程度の可撓性を有していればよいため、弾性体組成物として使用可能な材料の選択範囲は、弾性部３を構成するゴム状弾性体の材料に比べて広く、適宜調製することが可能である。   The fireproof cover 7 attached to the shaft spring having the above-described configuration is composed of an elastic body having flame retardancy that clears EN45554-2. In addition, since the fireproof cover itself is not subjected to a load from the outside and needs only to be flexible enough to follow the displacement of the shaft spring, a selection range of materials that can be used as the elastic composition Is wider than the material of the rubber-like elastic body constituting the elastic portion 3, and can be appropriately prepared.

具体的には、ゴム状弾性体組成物に、水酸化アルミニウム等の無機フィラーを配合することが可能である。また、リン酸化合物やアミン化合物等の難燃剤を併用することもできる。また、ポリマーとして、天然ゴムや合成ゴムのほかに、特許文献２に示すようなシリコーン系材料を使用することができる。また、難燃性基材（織布、不織布）を用い、これにゴム状弾性体組成物を含浸又は塗布したものを使用することも可能である。   Specifically, an inorganic filler such as aluminum hydroxide can be blended with the rubber-like elastic composition. Moreover, flame retardants, such as a phosphoric acid compound and an amine compound, can also be used together. In addition to natural rubber and synthetic rubber, a silicone material as shown in Patent Document 2 can be used as the polymer. It is also possible to use a flame retardant substrate (woven fabric, non-woven fabric) impregnated or coated with a rubber-like elastic composition.

防火カバー７は、上下開口を備えた円筒状に形成され、防火カバーの下側は下に行くほど、径が小さくなる漏斗状に形成される。このような形状とすることで、防火カバー７を一体的に成形することができる。防火カバー７は、下端部７ｂが弾性部３の下端部に締付バンド８によって止着され、上端部７ａが外筒２の外周面に締付バンド８によって止着される。   The fireproof cover 7 is formed in a cylindrical shape having upper and lower openings, and is formed in a funnel shape whose diameter decreases as the lower side of the fireproof cover goes down. By setting it as such a shape, the fireproof cover 7 can be shape | molded integrally. The fire protection cover 7 has a lower end portion 7 b fastened to the lower end portion of the elastic portion 3 by a fastening band 8 and an upper end portion 7 a fastened to the outer peripheral surface of the outer cylinder 2 by the fastening band 8.

締付バンド８は、図２に示すように、金属製又は合成樹脂製の帯状材を円状に湾曲させてなり、両端部を半径方向外方に折曲して互いに相対する折曲部９，９を形成し、両方の折曲部９に貫通穴を形成してボルト及びナット等の締結部材１１を用いて締め込む構成とされる。   As shown in FIG. 2, the fastening band 8 is formed by bending a metal or synthetic resin belt-like material into a circular shape, bending both ends radially outward, and bending portions 9 facing each other. , 9 are formed, through holes are formed in both bent portions 9, and tightened using fastening members 11 such as bolts and nuts.

なお、締付バンド８は、防火カバー７の上端部及び下端部を全周にわたって均一に締め付け可能であれば、特に制限なく使用することができる。 上記構成以外の例として、ジュビリー（登録商標）バンドを用いることができる。ジュビリーバンドは、一端に筒状のハウジングが固定された金属製又は合成樹脂製のバンドから構成される。 The tightening band 8 can be used without particular limitation as long as the upper end and the lower end of the fireproof cover 7 can be uniformly tightened over the entire circumference. As an example other than the above configuration, a Jubilee (registered trademark) band can be used. The jubilee band is composed of a metal or synthetic resin band having a cylindrical housing fixed to one end.

ハウジングの内部には、表面にウォームネジ山が形成されたスクリューが回転自在に配置されている。スクリューは回転軸の方向がバンドの長さ方向に一致するように設けられる。一方、バンドの他端には、スクリューのウォームネジ山に噛合可能な複数の溝部が形成されている。そして、バンドの他端をハウジング内に導入してスクリューと溝部を噛合させつつ、スクリューを回転させることにより締付バンドを締め込むことが可能となる。   Inside the housing, a screw having a worm screw thread formed on its surface is rotatably arranged. The screw is provided so that the direction of the rotation axis coincides with the length direction of the band. On the other hand, the other end of the band is formed with a plurality of grooves that can mesh with the worm threads of the screw. Then, it is possible to tighten the tightening band by introducing the other end of the band into the housing and meshing the screw with the groove and rotating the screw.

防火カバー７を軸ばねに取り付ける場合、先ず、防火カバー７の下端部７ｂ又は上端部７ａを所定位置に装着して、締付バンド８で締め付けて止着する。次いで、防火カバー７の他方端部を所定位置に装着する。このとき、他方端部の一部をずらして不活性ガスの供給ノズルを防火カバー７内に挿し入れ、ノズルから不活性ガスを供給する。防火カバー７内の空気がパージされ、不活性ガスで充填された後、ノズルを外してずらした防火カバーを元に戻して締付バンド８で締め付けて止着する。   When attaching the fireproof cover 7 to the shaft spring, first, the lower end portion 7b or the upper end portion 7a of the fireproof cover 7 is mounted at a predetermined position, and is fastened and fastened by the tightening band 8. Next, the other end of the fireproof cover 7 is attached to a predetermined position. At this time, the inert gas supply nozzle is inserted into the fireproof cover 7 by shifting a part of the other end, and the inert gas is supplied from the nozzle. After the air in the fireproof cover 7 is purged and filled with an inert gas, the fireproof cover shifted by removing the nozzle is returned to the original position and fastened by the fastening band 8 to be fixed.

これにより、弾性部３は防火カバー７によって気密に囲まれ、防火カバー７内に不活性ガスが充填された状態を長期間保持することができる。なお、不活性ガスとしては、窒素やヘリウム等を使用することができる。   Thereby, the elastic part 3 is airtightly surrounded by the fireproof cover 7 and can maintain a state where the fireproof cover 7 is filled with the inert gas for a long period of time. Note that nitrogen, helium, or the like can be used as the inert gas.

［第２実施形態］
図３は、本発明の第２実施形態を示す鉄道車両用の防火カバー付き軸ばねの正面図であり、右半分は断面を示す。本実施形態では、防火カバー内に不活性ガスを供給するガス供給装置と、防火カバー内のガスを排気する排気路と、ガス供給装置からの不活性ガスの供給及び排気路の開閉を制御する制御部が設けられた点が特徴とされており、その他の構成は第１実施形態と同様とされる。 [Second Embodiment]
FIG. 3 is a front view of a shaft spring with a fireproof cover for a railway vehicle showing a second embodiment of the present invention, and the right half shows a cross section. In the present embodiment, a gas supply device that supplies an inert gas into the fire cover, an exhaust path that exhausts the gas in the fire cover, and the supply of the inert gas from the gas supply device and the opening and closing of the exhaust path are controlled. A feature is that a control unit is provided, and other configurations are the same as those in the first embodiment.

図示のごとく、本実施形態では、ガス供給装置１２と、排気路１３と、ガス供給装置１２からの不活性ガスの供給および排気路１３の開閉を制御する制御部１４が設けられている。ガス供給装置１２としては不活性ガスボンベが用いられ、制御部１４はマイコンから構成される。   As illustrated, in the present embodiment, a gas supply device 12, an exhaust passage 13, and a control unit 14 that controls the supply of an inert gas from the gas supply device 12 and the opening and closing of the exhaust passage 13 are provided. An inert gas cylinder is used as the gas supply device 12, and the control unit 14 is constituted by a microcomputer.

第１実施形態では、防火カバー７を軸ばねに装着する前に、防火カバー７内の空気を不活性ガスに置換していたが、本実施形態では、防火カバー７を軸ばねに装着した後に、ガス供給装置１２からガスを供給する。その際に、制御部１４は、排気路１３を開放する。これにより、防火カバー７内の空気を速やかに不活性ガスに置換することが可能となる。   In the first embodiment, before the fire cover 7 is attached to the shaft spring, the air in the fire cover 7 is replaced with an inert gas, but in this embodiment, the fire cover 7 is attached to the shaft spring. The gas is supplied from the gas supply device 12. At that time, the control unit 14 opens the exhaust passage 13. Thereby, the air in the fireproof cover 7 can be quickly replaced with the inert gas.

防火カバー７におけるガス供給装置１２の接続位置と、排気路１３の形成位置とは、中心軸ＣＡを挟んで対称位置に配するのが好ましい。このような配置とすることで、防火カバー７内の空気を効率よく不活性ガスに置換することができる。   It is preferable that the connection position of the gas supply device 12 and the formation position of the exhaust passage 13 in the fireproof cover 7 are arranged at symmetrical positions with the central axis CA interposed therebetween. By setting it as such an arrangement | positioning, the air in the fireproof cover 7 can be efficiently substituted by an inert gas.

防火カバー７内の不活性ガスは、時間経過と共に徐々に空気と置換される。そこで、本実施形態では、制御部１４は、所定時間経過ごとに防火カバー７内に不活性ガスを供給するようにした。これにより、常時、防火カバー７内の不活性ガス濃度を一定以上に保つことができる。なお、制御部１４は、所定時間ごとに不活性ガスを供給するときは、排気路１３も開放する。これにより、効率よく不活性ガスを再充填することができる。   The inert gas in the fireproof cover 7 is gradually replaced with air over time. Therefore, in the present embodiment, the control unit 14 supplies the inert gas into the fireproof cover 7 every predetermined time. Thereby, the inert gas density | concentration in the fireproof cover 7 can always be maintained more than fixed level. Note that when the inert gas is supplied every predetermined time, the control unit 14 also opens the exhaust passage 13. Thereby, the inert gas can be efficiently refilled.

不活性ガスの供給方法については、上記方法のほかに、微量の不活性ガスを供給し続けることも可能である。この場合、排気路１３を閉鎖したままとすることができる。防火カバー７内が一定圧以上になると、防火カバー７の上端部又は可端部の隙間から不活性ガスが排気される。防火カバー７内の不活性ガスを排気するベント弁のような圧力調整装置を設けることもできる。これにより、防火カバー７内が過剰圧力となることを防止することができる。   Regarding the inert gas supply method, in addition to the above-described method, it is also possible to continue supplying a trace amount of inert gas. In this case, the exhaust path 13 can be kept closed. When the inside of the fireproof cover 7 reaches a certain pressure or higher, the inert gas is exhausted from the gap between the upper end or the end of the fireproof cover 7. A pressure adjusting device such as a vent valve for exhausting the inert gas in the fireproof cover 7 can also be provided. Thereby, it can prevent that the inside of the fireproof cover 7 becomes an excessive pressure.

［第３実施形態］
図４は、本発明の第３実施形態を示す鉄道車両用の防火カバー付き軸ばねの正面図であり、右半分は断面を示す。本実施形態では、防火カバー内の異常を検知する異常検知センサが設けられ、制御部が異常検知センサからの信号によって異常を検知したときに、ガス供給装置からの不活性ガスの供給及び排気路の開閉を制御する点が特徴とされ、その他の構成は第２実施形態と同様とされる。 [Third Embodiment]
FIG. 4 is a front view of a shaft spring with a fire protection cover for a railway vehicle showing a third embodiment of the present invention, and the right half shows a cross section. In this embodiment, an abnormality detection sensor for detecting an abnormality in the fireproof cover is provided, and when the control unit detects an abnormality by a signal from the abnormality detection sensor, the supply and exhaust passage of the inert gas from the gas supply device The other features are the same as those of the second embodiment.

本実施形態では、弾性部３と、防火カバー７との間の空間に、異常検知センサ１５として温度センサが配置されており、制御部１４は、異常検知センサ１５で検知された温度が異常に高いと判断した場合、火災発生により防火カバー７が破損して高温ガスが防火カバー内に流入したと判断して不活性ガスを供給する。なお、この場合には、制御部１４は、排気路１３を開放せず閉鎖した状態のままとする。   In the present embodiment, a temperature sensor is disposed as the abnormality detection sensor 15 in the space between the elastic portion 3 and the fire cover 7, and the control unit 14 detects that the temperature detected by the abnormality detection sensor 15 is abnormal. When it is determined that the temperature is high, it is determined that the fireproof cover 7 is damaged due to the occurrence of a fire and the high temperature gas flows into the fireproof cover, and the inert gas is supplied. In this case, the control unit 14 keeps the exhaust path 13 closed without opening it.

これにより、炎により破損した防火カバー７部分から、不活性ガスが炎の方向に供給され、消火若しくは軸ばねの燃焼を遅延化することが可能となる。本実施形態では、異常検知センサ１５として温度センサを用いたが、この温度センサのほか、圧力センサ、不活性ガスや空気などの濃度を検出するガス濃度センサの中から１種又は２種以上を組み合わせて用いることができる。   As a result, the inert gas is supplied in the direction of the flame from the portion of the fireproof cover 7 damaged by the flame, and it becomes possible to delay the extinguishing or burning of the shaft spring. In the present embodiment, a temperature sensor is used as the abnormality detection sensor 15, but in addition to this temperature sensor, one or more of pressure sensors, gas concentration sensors for detecting the concentration of inert gas, air, and the like are used. They can be used in combination.

以上、本発明の実施形態につき説明したが、本発明の範囲はこれに限定されるものではなく、発明の趣旨を逸脱しない範囲で種々の変更を加えて実施することができる。たとえば、第１〜第３実施形態においては、コニカルストッパー型の弾性部を用いた軸ばねについて説明したが、これに限らず、水平方向（上下方向）に弾性体と金属板とを積層した積層ゴムストッパー型であってもよく、ゴム状弾性体のみからなる弾性部であってもよく、その他の構造のゴム状弾性体を用いた弾性部であってもよい。   Although the embodiments of the present invention have been described above, the scope of the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the invention. For example, in the first to third embodiments, the shaft spring using the conical stopper type elastic portion has been described. However, the present invention is not limited to this, and a laminated body in which an elastic body and a metal plate are laminated in the horizontal direction (vertical direction). It may be a rubber stopper type, may be an elastic part composed only of a rubber-like elastic body, or may be an elastic part using a rubber-like elastic body having another structure.

また、第１〜第３実施形態では防火カバーは漏斗状とされていたが、これに限らず、一部に蛇腹部を形成することも可能である。これにより、軸ばねの変位にいっそう追随しやすくすることができる。また、第２及び第３実施形態において、排気路が形成されているが、形成しなくてもよい。この場合、ガス供給装置から不活性ガスを少量ずつ供給する。不活性ガスが供給されると、防火カバー内は加圧され、防火カバーの上端部又は下端部から徐々にガスが排気されることになる。なお、防火カバーに圧力調整装置を設けておくことにより、防火カバー内が不活性ガスで過剰圧力になったときに不活性ガスを外部に排気することも可能である。   In the first to third embodiments, the fireproof cover has a funnel shape. However, the present invention is not limited to this, and a bellows portion can be formed in part. Thereby, it can be made easier to follow the displacement of the shaft spring. In the second and third embodiments, the exhaust path is formed, but it may not be formed. In this case, the inert gas is supplied little by little from the gas supply device. When the inert gas is supplied, the inside of the fireproof cover is pressurized, and the gas is gradually exhausted from the upper end portion or the lower end portion of the fireproof cover. In addition, by providing a pressure adjusting device in the fireproof cover, it is possible to exhaust the inert gas to the outside when the inside of the fireproof cover becomes an excessive pressure due to the inert gas.

１ 中心材
２ 外筒
３ 弾性部
４ 芯軸
５ 弾性層
６ 中間筒
７ 防火カバー
７ａ 防火カバー上端部
７ｂ 防火カバー下端部
８ 締付バンド
９ 折曲部
１１ 締結部材
１２ ガス供給装置
１３ 排気路
１４ 制御部
１５ 異常検知センサ
ＣＡ 中心軸 DESCRIPTION OF SYMBOLS 1 Center material 2 Outer cylinder 3 Elastic part 4 Core shaft 5 Elastic layer 6 Intermediate cylinder 7 Fire prevention cover 7a Fire prevention cover upper end part 7b Fire prevention cover lower end part 8 Fastening band 9 Bending part 11 Fastening member 12 Gas supply device 13 Exhaust passage 14 Control unit 15 Abnormality detection sensor CA Center axis

Claims (7)

ゴム状弾性体を有する軸ばねと、前記軸ばねに対し、前記ゴム状弾性体を気密に囲むように取り付けられた筒状の防火カバーとを備え、前記防火カバーは難燃性を有し、前記防火カバー内が不活性ガスで充填されたことを特徴とする防火カバー付き軸ばね。 A shaft spring having a rubber-like elastic body, and a cylindrical fire-proof cover attached to the shaft spring so as to airtightly surround the rubber-like elastic body, the fire-proof cover having flame retardancy, A shaft spring with a fire cover, wherein the fire cover is filled with an inert gas. 前記不活性ガスは、前記ゴム状弾性体と、前記防火カバーとの間の空間に充填されたことを特徴とする請求項１に記載の防火カバー付き軸ばね。 The shaft spring according to claim 1, wherein the inert gas is filled in a space between the rubber-like elastic body and the fire cover. 前記防火カバーの上端部及び下端部は、締付バンドによって前記軸ばねに止着されたことを特徴とする請求項１又は２に記載の防火カバー付き軸ばね。 The shaft spring with a fire cover according to claim 1 or 2, wherein an upper end portion and a lower end portion of the fire cover are fixed to the shaft spring by a fastening band. 前記防火カバー内に不活性ガスを供給するガス供給装置と、前記ガス供給装置からの不活性ガスの供給を制御する制御部とが設けられたことを特徴とする請求項１〜３のいずれか１項に記載の防火カバー付き軸ばね。 The gas supply device for supplying an inert gas into the fireproof cover and a control unit for controlling the supply of the inert gas from the gas supply device are provided. A shaft spring with a fireproof cover according to item 1. 前記制御部は、所定時間経過ごとに前記防火カバー内に不活性ガスを供給することを特徴とする請求項１〜４のいずれか１項に記載の防火カバー付き軸ばね。 5. The shaft spring with a fire cover according to claim 1, wherein the control unit supplies an inert gas into the fire cover every predetermined time. 前記防火カバー内のガスを排気する排気路が設けられ、前記排気路は、前記制御部によって開閉制御され、前記制御部は、前記防火カバー内に不活性ガスを供給するときに前記排気路を開放し、不活性ガスの供給を停止するときに前記排気路を閉鎖することを特徴とする請求項５に記載の防火カバー付き軸ばね。 An exhaust path for exhausting the gas in the fireproof cover is provided, and the exhaust path is controlled to be opened and closed by the control unit, and the control unit opens the exhaust path when supplying inert gas into the fireproof cover. The shaft spring with a fireproof cover according to claim 5, wherein the exhaust path is closed when the exhaust gas passage is opened and the supply of the inert gas is stopped. 前記防火カバー内の異常を検知する異常検知センサが設けられ、前記制御部は、前記異常検知センサが異常を検知したときに、前記ガス供給装置から前記防火カバー内に不活性ガスを供給することを特徴とする請求項４〜６のいずれか１項に記載の防火カバー付き軸ばね。 An abnormality detection sensor for detecting an abnormality in the fire cover is provided, and the control unit supplies an inert gas from the gas supply device into the fire cover when the abnormality detection sensor detects an abnormality. A shaft spring with a fireproof cover according to any one of claims 4 to 6.
JP2015053099A 2015-03-17 2015-03-17 Shaft spring with fire protection cover Expired - Fee Related JP6542552B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2015053099A JP6542552B2 (en) 2015-03-17 2015-03-17 Shaft spring with fire protection cover
DE102016104497.0A DE102016104497B4 (en) 2015-03-17 2016-03-11 Axle spring with fireproof cover
ATA134/2016A AT517287B1 (en) 2015-03-17 2016-03-14 Axle spring
CN201610150820.8A CN105987114B (en) 2015-03-17 2016-03-16 Shaft spring with fireproof cover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2015053099A JP6542552B2 (en) 2015-03-17 2015-03-17 Shaft spring with fire protection cover

Publications (2)

Publication Number Publication Date
JP2016173130A true JP2016173130A (en) 2016-09-29
JP6542552B2 JP6542552B2 (en) 2019-07-10

Family

ID=56853384

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2015053099A Expired - Fee Related JP6542552B2 (en) 2015-03-17 2015-03-17 Shaft spring with fire protection cover

Country Status (4)

Country Link
JP (1) JP6542552B2 (en)
CN (1) CN105987114B (en)
AT (1) AT517287B1 (en)
DE (1) DE102016104497B4 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20240031386A (en) 2021-11-26 2024-03-07 스미토모 리코 가부시키가이샤 Protective covers for axle springs and axle springs for railway vehicles

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107349539B (en) * 2016-10-31 2023-06-30 中国石油化工股份有限公司 Flexible fireproof cover
JP6789094B2 (en) * 2016-12-21 2020-11-25 Ｔｏｙｏ Ｔｉｒｅ株式会社 Shaft spring
DE102017008926B4 (en) 2017-09-25 2019-08-08 Jörn GmbH Elastomer-metal bearing as a bearing component with component-integrated elastomer material fire protection and rail vehicle
JP6966599B1 (en) * 2020-05-29 2021-11-17 住友理工株式会社 Rubber bush for railroad bogie
CN114876997B (en) * 2022-05-27 2023-06-30 浙江孔辉汽车科技有限公司 Footstock assembly and air spring

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007218391A (en) * 2006-02-20 2007-08-30 Japan Atomic Energy Agency High pressure air spring type base isolation device
JP2007278398A (en) * 2006-04-07 2007-10-25 Toyo Tire & Rubber Co Ltd Vibration control implement for vehicle
ES2507466A1 (en) * 2014-07-24 2014-10-14 Metalocaucho, S.L. Fire retardant spring for primary suspensions of railway bogies (Machine-translation by Google Translate, not legally binding)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5517767A (en) * 1978-07-24 1980-02-07 Sumitomo Electric Ind Ltd Cover for air spring
JP2947876B2 (en) * 1990-05-22 1999-09-13 株式会社ブリヂストン Fireproof structure of seismic isolation support device
JP2999528B2 (en) * 1990-09-14 2000-01-17 株式会社ブリヂストン Snow cover for air spring and air spring using the same
JP2000104774A (en) * 1998-09-25 2000-04-11 Kurashiki Kako Co Ltd Long life elastic structure
JP2004001614A (en) 2002-05-31 2004-01-08 Tokyu Car Corp Axle spring damper for truck
US7625394B2 (en) 2005-08-05 2009-12-01 Warsaw Orthopedic, Inc. Coupling assemblies for spinal implants
CN201090656Y (en) * 2007-06-01 2008-07-23 成都飞机工业（集团）有限责任公司 Air spring for automobile
JP2012172819A (en) * 2011-02-24 2012-09-10 Toyo Tire & Rubber Co Ltd Protective cover for air spring, and air spring fitted the same
CN103946280A (en) 2011-11-17 2014-07-23 道康宁公司 Silicone resins comprising metallosiloxane
CN202839048U (en) * 2012-08-25 2013-03-27 安徽德力电热电缆有限公司 High temperature resistant fireproof cable
JP2016173129A (en) 2015-03-17 2016-09-29 東洋ゴム工業株式会社 Air spring with fireproof cover

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007218391A (en) * 2006-02-20 2007-08-30 Japan Atomic Energy Agency High pressure air spring type base isolation device
JP2007278398A (en) * 2006-04-07 2007-10-25 Toyo Tire & Rubber Co Ltd Vibration control implement for vehicle
ES2507466A1 (en) * 2014-07-24 2014-10-14 Metalocaucho, S.L. Fire retardant spring for primary suspensions of railway bogies (Machine-translation by Google Translate, not legally binding)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20240031386A (en) 2021-11-26 2024-03-07 스미토모 리코 가부시키가이샤 Protective covers for axle springs and axle springs for railway vehicles

Also Published As

Publication number Publication date
JP6542552B2 (en) 2019-07-10
CN105987114B (en) 2019-12-13
DE102016104497A1 (en) 2016-09-22
CN105987114A (en) 2016-10-05
AT517287A3 (en) 2019-08-15
DE102016104497B4 (en) 2023-12-07
AT517287A2 (en) 2016-12-15
AT517287B1 (en) 2020-10-15

Similar Documents

Publication Publication Date Title
JP2016173130A (en) Axle spring with fireproof cover
JP2016173129A (en) Air spring with fireproof cover
CA2951320C (en) High-pressure resistant integrated leak-free rotary compensator
US11111979B2 (en) Elastomeric articles with improved fire protection properties
US20210396323A1 (en) Ventilation component
KR101006469B1 (en) Horizontal supporting for electric shock of high voltage electric
JP2010223372A (en) Air spring for railway vehicle
US20180127570A1 (en) Hose rubber composition and hose
KR101981419B1 (en) High pressure gas vessel and method of manufacturing high pressure gas vessel
JP2016173122A (en) Air spring
JP2016173121A (en) Axle spring
US20190309876A1 (en) Shock-absorbing flexible pipe
JP2012029504A (en) Sheath with shield for wire harness
US20050274424A1 (en) Gastight decoupling element from stripwound hoses
WO2015163473A1 (en) Vibration prevention device
SE528450C2 (en) Flexible tube for exhaust pipe of automobile, includes resilient member arranged around and engaging outer surface of braided member arranged and fixed at both ends of cylindrical bellows
JP2011144871A (en) Air spring
CN210686955U (en) Anti-aging rubber sealing ring
CN210262397U (en) Inner barrel and clothes dryer
WO2020017010A1 (en) Rubber composition for hose
JPS6212422B2 (en)
CN106122602B (en) A kind of loss prevention pipeline bogey
JP2009222196A (en) Pneumatic spring
JP2018012357A (en) Fuel tank structure for vehicle
KR20140013735A (en) Rubber composite for a shock absorber oil seal

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20180307

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20181220

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20190108

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20190326

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20190415

A911 Transfer to examiner for re-examination before appeal (zenchi)

Free format text: JAPANESE INTERMEDIATE CODE: A911

Effective date: 20190424

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20190521

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20190613

R150 Certificate of patent or registration of utility model

Ref document number: 6542552

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313113

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

LAPS Cancellation because of no payment of annual fees