JP6506058B2 - Shaft spring - Google Patents

Shaft spring Download PDF

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Publication number
JP6506058B2
JP6506058B2 JP2015052844A JP2015052844A JP6506058B2 JP 6506058 B2 JP6506058 B2 JP 6506058B2 JP 2015052844 A JP2015052844 A JP 2015052844A JP 2015052844 A JP2015052844 A JP 2015052844A JP 6506058 B2 JP6506058 B2 JP 6506058B2
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Japan
Prior art keywords
fire protection
protection cover
communication passage
outer cylinder
cylindrical elastic
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Expired - Fee Related
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JP2015052844A
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JP2016173121A (en
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増田　武司
武司 増田
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Toyo Tire Corp
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Toyo Tire Corp
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Priority to JP2015052844A priority Critical patent/JP6506058B2/en
Priority to DE102016104496.2A priority patent/DE102016104496B4/en
Priority to ATA137/2016A priority patent/AT517290B1/en
Priority to CN201610150052.6A priority patent/CN105987177B/en
Publication of JP2016173121A publication Critical patent/JP2016173121A/en
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    • 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
    • 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
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/50—Sealings between relatively-movable members, by means of a sealing without relatively-moving surfaces, e.g. fluid-tight sealings for transmitting motion through a wall
    • F16J15/52—Sealings between relatively-movable members, by means of a sealing without relatively-moving surfaces, e.g. fluid-tight sealings for transmitting motion through a wall by means of sealing bellows or diaphragms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/22—Resilient suspensions characterised by arrangement, location or kind of springs having rubber springs only
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/14—Plastic spring, e.g. rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/14—Plastic spring, e.g. rubber
    • B60G2202/143—Plastic spring, e.g. rubber subjected to compression
    • 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
    • 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
    • F16F2230/105—Flexible, e.g. bellows or bladder

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)
  • Vibration Prevention Devices (AREA)
  • Sealing Devices (AREA)
  • Diaphragms And Bellows (AREA)

Description

本発明は、例えば鉄道車両の台車フレーム側と車軸側との間に介装される軸ばねに関するものである。   The present invention relates to an axial spring interposed, for example, between a bogie frame side and an axle side of a railway vehicle.

一般に、鉄道車両などに装備される軸ばねは、台車フレーム側に取り付けられる外筒と、車軸側に取り付けられて外筒から伝達される荷重を受ける中心材と、外筒及び中心材間に介在するゴム製で円錐台形状の筒状弾性層と、を備えた構造とされる。このような軸ばねは、ゴム製の筒状弾性層の下面側が外部に露出し、その分、筒状弾性層が損傷しやすく、軸ばね全体としてダメージを受けやすい。   Generally, an axial spring provided in a railway vehicle or the like is interposed between an outer cylinder attached to the bogie frame side, a central member attached to the axle side and receiving a load transmitted from the outer cylinder, the outer cylinder and the central member And a frusto-conical cylindrical elastic layer. In such a shaft spring, the lower surface side of the rubber-made cylindrical elastic layer is exposed to the outside, and accordingly, the cylindrical elastic layer is easily damaged, and the entire shaft spring is easily damaged.

特許文献１は、このような外部にゴム製の筒状弾性層が露出する軸ばねについて、弾性体の下端側を覆う保護カバーを装備し、融雪用の蒸気や融雪剤、塩水や潮風から保護する技術を開示している。   Patent document 1 equips a protective cover which covers the lower end side of an elastic body about an axial spring which such a cylindrical elastic layer made of rubber is exposed to the outside like this, and protects from steam for snow melting, a snow melting agent, salt water or sea breeze Technology is disclosed.

特開２００７−２７８３９８号公報（段落番号００２６、００２８）Unexamined-Japanese-Patent No. 2007-278398 (paragraph number 0026, 0028)

ところが、特許文献１の軸ばねは、その弾性体を蒸気や融雪剤、塩水、潮風などから保護することができるものの、弾性体を火花や火気から保護することはできない。   However, although the axial spring of Patent Document 1 can protect its elastic body from steam, a snow melting agent, salt water, sea breeze, etc., it can not protect the elastic body from sparks or fire.

これに対し、筒状弾性層を構成するゴム自体の防火性能を高めることが考えられるが、この場合、ゴムの防火性能の向上と引き換えに、筒状弾性層の防振性能や耐久性などの他の性能を低下させるおそれがある。   On the other hand, it is conceivable to improve the fire protection performance of the rubber itself that constitutes the cylindrical elastic layer, but in this case, the vibration resistance performance and the durability etc. of the cylindrical elastic layer are exchanged in exchange for the improvement of the fire protection performance of the rubber. Other performance may be degraded.

本発明は、筒状弾性層の防振性能や耐久性などの性能を低下させることなく、ゴム製の筒状弾性層を火花や火気から保護することのできる軸ばねの提供を目的とする。   An object of the present invention is to provide a shaft spring capable of protecting a rubber-made cylindrical elastic layer from sparks and fire without deteriorating the performance such as the vibration proofing performance and durability of the cylindrical elastic layer.

上記目的を達成するために、本発明に係る軸ばねは、外筒と、この外筒から伝達される荷重を受ける中心材と、外筒及び中心材間に介在する円錐台形状の筒状弾性層と、を備えたものであり、その外筒及び中心材に、筒状弾性層の下面を覆う筒状の防火カバーを止着したものである。   In order to achieve the above object, the shaft spring according to the present invention comprises an outer cylinder, a central member which receives a load transmitted from the outer cylinder, and a conical elastic cylindrical member interposed between the outer cylinder and the central member. A cylindrical fire protection cover covering the lower surface of the cylindrical elastic layer is fixed to the outer cylinder and the center member of the layer.

上記構成によれば、外筒及び中心材に筒状の防火カバーを止着して、この防火カバーで筒状弾性層の下面を覆うので、軸ばね自体の性能に何の影響をも及ぼすことなく、筒状弾性層を、火花、火気等から保護することができる。   According to the above configuration, since the cylindrical fire protection cover is fixed to the outer cylinder and the center member and the lower surface of the cylindrical elastic layer is covered with this fire protection cover, the performance of the shaft spring itself is affected in any way. Instead, the cylindrical elastic layer can be protected from sparks, fire and the like.

また、防火カバーの内外を連通させる連通路を設け、この連通路の流路長を防火カバーの厚さよりも長く設定するようにしてもよい。   Alternatively, a communication passage may be provided to communicate the inside and the outside of the fire protection cover, and the flow passage length of the communication passage may be set longer than the thickness of the fire protection cover.

この構成によると、防火カバーの内外を連通させる連通路を設けるので、例えば鉄道車両の走行によって軸ばねが変位する際、連通路から空気を出入りさせて、防火カバーの内側の気圧が変動するのを防止することができ、例えば、防炎カバーがその内側の負圧で潰されて破損するのを防止することができる。   According to this configuration, since the communication passage is provided to communicate the inside and the outside of the fire protection cover, for example, when the shaft spring is displaced due to the traveling of the rail vehicle, air is allowed to enter and exit from the communication passage to change the air pressure inside the fire protection cover Can be prevented, for example, the fireproof cover can be prevented from being crushed and damaged by the negative pressure on its inside.

しかも、連通路として、単に、火気の侵入を阻止できる程度の大きさの小孔を防火カバーに形成するだけでなく、連通路の流路長を長くするので、連通路の内径を比較的に大きく設定しつつ、火気が連通路を通って防火カバーの内側にまで侵入するのを防止することができる。さらに、連通路の流路長が長い分、連通路に屈曲部を適宜形成することができ、連通路の内径を比較的に大きく設定しつつ、火気の侵入をより確実に阻止することができる。これにより、筒状弾性層を火花や火気から保護しつつ、防火カバーの内外の空気の出入りを容易にして、防火カバーの内側の気圧の変動を防止することができる。   In addition, the communication passage is not only formed in the fire protection cover with a small hole having a size sufficient to prevent the entry of fire, but the flow passage length of the communication passage is lengthened. It is possible to prevent the fire from intruding into the inside of the fire protection cover through the communication passage while setting it large. Furthermore, since the flow passage length of the communication passage is long, the bending portion can be appropriately formed in the communication passage, and the penetration of the fire can be more reliably prevented while the inner diameter of the communication passage is set relatively large. . Thus, while the cylindrical elastic layer is protected from sparks and fire, the air inside and outside the fire protection cover can be easily moved in and out, so that the pressure fluctuation inside the fire protection cover can be prevented.

また、連通路としては、火気の侵入を阻止可能な程度の小径の筒状金具など、専用の部品を防火カバーに取り付けたものであってもよいが、連通路を中心材に形成するようにしてもよい。   Further, as the communication passage, a dedicated part such as a cylindrical fitting having a small diameter capable of preventing the entrance of fire may be attached to the fire protection cover, but the communication passage is formed in the center material May be

この構成によると、連通路を中心材に形成するので、連通路としての専用の部品を省略することができる。しかも、中心材は、車軸側に取り付けられる部材であり、この中心軸に連通路を形成することにより、軸ばねが変位する際の連通路の変位を小さくすることができ、連通路の変位に伴う慣性力によって、連通路及びその近傍が損傷するのを防止することができる。   According to this configuration, since the communication passage is formed in the central member, a dedicated part as the communication passage can be omitted. In addition, the central member is a member attached to the axle side, and by forming the communication passage on the central axis, the displacement of the communication passage when the axial spring is displaced can be reduced, and the displacement of the communication passage can be reduced. The accompanying inertial force can prevent damage to the communication passage and the vicinity thereof.

以上のとおり、本発明によると、軸ばねの外筒及び中心材に筒状の防火カバーを止着している。これにより、軸ばね自体の性能に何の影響をも及ぼすことなく、防火カバーで軸ばねの筒状弾性層の下面を覆って、筒状弾性層を、火花、火気等から保護することができる。   As described above, according to the present invention, the cylindrical fire protection cover is fixed to the outer cylinder and the center member of the shaft spring. Thereby, the cylindrical elastic layer can be protected from sparks, fire, etc. by covering the lower surface of the cylindrical elastic layer of the axial spring with the fire protection cover without affecting the performance of the axial spring itself. .

本発明の軸ばねの断面図Cross-sectional view of the shaft spring of the present invention 別の形態の軸ばねの断面図Cross section of another form of axial spring

以下、本発明に係る軸ばねを実施するための形態について、図面を用いて説明する。   Hereinafter, a form for carrying out a shaft spring concerning the present invention is explained using a drawing.

図１に示すように、軸ばね１は、例えば、鉄道車両に装備されるものであり、台車フレーム側に取り付けられる外筒２と、車軸側に取り付けられて外筒２から伝達される荷重を受ける中心材３と、外筒２と中心材３との間に介在する円錐台形状の二層の筒状弾性層４ａ、４ｂと、筒状弾性層４ａ、４ｂの間に介在する円錐台形状の中間筒５と、を備えた構造とされて、その外筒２及び中心材３に、筒状弾性層４ａ、４ｂの下面を覆う筒状の防火カバー６が止着され、中心材３に、防火カバー６の内外を連通させる連通路７が形成されている。   As shown in FIG. 1, the shaft spring 1 is, for example, provided to a railway vehicle, and an outer cylinder 2 attached to the bogie frame side and a load attached to the axle side and transmitted from the outer cylinder 2 Between the core 3 to be received, the two frustum-shaped cylindrical elastic layers 4a and 4b interposed between the outer cylinder 2 and the core 3 and the frustum shape interposed between the cylindrical elastic layers 4a and 4b The cylindrical fire protection cover 6 which covers the lower surface of the cylindrical elastic layers 4 a and 4 b is fixed to the outer cylinder 2 and the center member 3 of the intermediate cylinder 5. A communication passage 7 is formed to communicate the inside and the outside of the fire protection cover 6.

外筒２は、内周面を下側が大径の円錐台面に設定された例えば鋼製の筒状とされ、その上端部が台車フレーム側に嵌合されて取り付けられる。この外筒２の下端部の外周面には、防火カバー６を係合する係合溝が周方向に連続して形成されている。   The outer cylinder 2 is, for example, a steel cylinder whose inner peripheral surface is set to a truncated cone surface having a large diameter at the lower side, and the upper end portion thereof is fitted and attached to the bogie frame side. In the outer peripheral surface of the lower end portion of the outer cylinder 2, an engagement groove for engaging the fire protection cover 6 is continuously formed in the circumferential direction.

中心材３は、例えば鋼製で、外筒２の内周面と同じ傾斜角の外周面を有する円錐台形状とされ、外筒２よりも下方に配置されている。中心材３の下端部には、径方向外向きに突出する座板８が形成され、その中央部から下向きに突出する芯軸９が車軸側に嵌合されて取り付けられる。   The center member 3 is made of, for example, steel, and has a frusto-conical shape having an outer peripheral surface having the same inclination angle as the inner peripheral surface of the outer cylinder 2 and is disposed below the outer cylinder 2. A seat plate 8 that protrudes radially outward is formed at the lower end portion of the center member 3, and a core shaft 9 that protrudes downward from the central portion thereof is fitted and attached to the axle side.

筒状弾性層４ａ、４ｂは、それぞれが防振性能を有する円錐台形状の筒状ゴムとされ、外周面及び内周面の傾斜角を外筒２の内周面及び中心材３の外周面と同じ角度に設定されて、それぞれ外筒２及び中心材３に加硫接着されている。   The cylindrical elastic layers 4a and 4b are each formed of a truncated cone-shaped cylindrical rubber having vibration damping performance, and the inclination angles of the outer peripheral surface and the inner peripheral surface are set to the inner peripheral surface of the outer cylinder 2 and the outer peripheral surface of the center member 3 It is set to the same angle as the above, and is vulcanized and bonded to the outer cylinder 2 and the center member 3 respectively.

中間筒５は、円錐台形状の例えば鋼製筒とされて、その傾斜角が外筒２の内周面及び中心材３の外周面と同じ角度に設定され、筒状弾性層４ａ、４ｂに加硫接着されている。   The intermediate cylinder 5 is a truncated conical shape, for example, a steel cylinder, the inclination angle of which is set to the same angle as the inner peripheral surface of the outer cylinder 2 and the outer peripheral surface of the center member 3, and the cylindrical elastic layers 4a and 4b. It is bonded by vulcanization.

防火カバー６は、例えば、耐火性能を有する周知のゴムシートを筒状に構成してなり、その上端部１０が外筒２の下端部の外周面の係合溝に係合して止着され、下端部が鋼製バンド１１によって中心材３の下端に止着される。この防火カバー６は、上部が略鉛直で下部が略水平の湾曲面に構成され、筒状弾性層４ａ、４ｂの下側を覆って、ゴム部が外部に露出するのを阻止する。なお、防火カバー６の下部に蛇腹部を形成して、軸ばね１の変位に追随しやすいようにしてもよい。   The fire protection cover 6 is formed, for example, of a known rubber sheet having fire resistance performance in a cylindrical shape, and the upper end portion 10 thereof is engaged with an engagement groove of the outer peripheral surface of the lower end portion of the outer cylinder 2 and fixed. The lower end is fixed to the lower end of the core 3 by a steel band 11. The fire protection cover 6 has a curved surface whose upper portion is substantially vertical and whose lower portion is substantially horizontal, covers the lower side of the cylindrical elastic layers 4a and 4b, and prevents the rubber portion from being exposed to the outside. A serpentine portion may be formed on the lower portion of the fire protection cover 6 so as to easily follow the displacement of the shaft spring 1.

連通路７は、中心材３に形成された横孔１２と、横孔１２の奥から芯軸９の下面に達する縦孔１３と、で構成され、適宜複数個所に形成されて、防火カバー６の内外を連通させる。   The communication passage 7 is composed of a horizontal hole 12 formed in the center member 3 and a vertical hole 13 reaching the lower surface of the core shaft 9 from the back of the horizontal hole 12. Communicate inside and outside

上記構成によれば、防火カバー６が筒状弾性層４ａ、４ｂを覆って、ゴム部が外部に露出するのを阻止するので、軸ばね１の防火性能を高めることができる。しかも、連通路７を形成して防火カバー６の内外を連通させるので、これらから空気を出入りさせることにより、軸ばね１の変位に伴って防火カバー６の内側の気圧が変化するのを阻止することができ、内側の負圧によって防火カバー６が破損するのを防止することができる。   According to the above configuration, the fire protection cover 6 covers the cylindrical elastic layers 4a and 4b to prevent the rubber portion from being exposed to the outside, so that the fire protection performance of the shaft spring 1 can be enhanced. Moreover, since the communication passage 7 is formed to allow the inside and the outside of the fire protection cover 6 to communicate with each other, the air inside and outside the fire protection cover 6 is prevented from changing with the displacement of the shaft spring 1 It is possible to prevent the fire protection cover 6 from being damaged by the internal negative pressure.

さらに、連通路７を横孔１２と縦孔１３とで構成するので、その流路長を防火カバー６の厚さよりも長く設定すると共に、横孔１２と縦孔１３との境界において屈曲させることができる。これにより、連通路７の流路面積を大きく設定して空気の出入りを容易にしつつ、外部から防火カバー６の内側への火気の侵入を阻止して、軸ばね１の防火性能を高めることができる。   Furthermore, since the communication passage 7 is constituted by the horizontal hole 12 and the vertical hole 13, the flow path length is set longer than the thickness of the fire protection cover 6 and bent at the boundary between the horizontal hole 12 and the vertical hole 13. Can. As a result, the flow passage area of the communication passage 7 is set large to make air entry and exit easy, and the fire prevention performance of the shaft spring 1 is improved by preventing the fire from entering the inside of the fire protection cover 6 from the outside. it can.

なお、本発明は、上記の実施の形態に限定されるものではなく、本発明の範囲内において、適宜変更を加えることができる。例えば、図２に示すように、中心材３に形成する連通路７に代えて、防火カバー６の下端付近に、別体の筒状金具からなる連通路１４を設けてもよい。連通路１４は、火気の侵入を防止するのに十分な長さで、Ｌ字型に屈曲している。この場合、連通路１４を専用の筒状金具で構成するので、防炎カバー６を除く部位は、従来の軸ばねと同じ構造にすることができる。また、防火カバー６の下端付近に連通路１４を設けるので、軸ばね１の変位に伴う連通路１４の変位を小さくすることができ、その慣性力による防火カバー６の損傷を防止することができる。   In addition, this invention is not limited to said embodiment, A change can be suitably added within the scope of the present invention. For example, as shown in FIG. 2, instead of the communication passage 7 formed in the center member 3, the communication passage 14 formed of a separate cylindrical metal fitting may be provided near the lower end of the fire protection cover 6. The communication passage 14 is bent in an L-shape with a length sufficient to prevent the intrusion of fire. In this case, since the communication passage 14 is constituted by a dedicated cylindrical metal fitting, the portion excluding the flameproof cover 6 can be the same structure as that of the conventional axial spring. Further, since the communication passage 14 is provided near the lower end of the fire protection cover 6, the displacement of the communication passage 14 due to the displacement of the shaft spring 1 can be reduced, and damage to the fire protection cover 6 due to the inertia force can be prevented. .

また、連通路７、１４を設けることなく、防火カバー６にその内外を連通させる連通孔を形成しただけでもよく、さらに、防火カバー６がその内側の気圧の変化によって損傷しない程度に、軸ばね１の通常の変位を抑えることを前提として、連通路７、１４及び連通孔を省略することもできる。   Alternatively, the communication holes 7 and 14 may not be provided, and the fire protection cover 6 may be formed with communication holes for communicating the inside and the outside thereof, and the shaft spring may be formed to such an extent that the fire protection cover 6 is not damaged The communication passages 7 and 14 and the communication hole can be omitted on the premise that the normal displacement of 1 is suppressed.

１ 軸ばね
２ 外筒
３ 中心材
４ａ、４ｂ 筒状弾性層
５ 中間筒
６ 防火カバー
７ 連通路
８ 座板
９ 芯軸
１０ 上端部
１１ 鋼製バンド
１２ 横孔
１３ 縦孔
１４ 連通路 1-shaft spring 2 outer cylinder 3 center member 4a, 4b cylindrical elastic layer 5 intermediate cylinder 6 fire protection cover 7 communication passage 8 seat plate 9 core shaft 10 upper end 11 steel band 12 lateral hole 13 longitudinal hole 14 communication passage

Claims (2)

外筒と、該外筒から伝達される荷重を受ける中心材と、前記外筒及び中心材間に介在する円錐台形状の筒状弾性層と、を備えた軸ばねであって、前記外筒及び中心材に、筒状弾性層の下面を覆う筒状の防火カバーが止着され、前記防火カバーの内外を連通させる連通路が設けられ、該連通路は、その流路長を防火カバーの厚さよりも長く設定されたことを特徴とする軸ばね。 An axial spring comprising: an outer cylinder; a center member receiving a load transmitted from the outer cylinder; and a truncated conical cylindrical elastic layer interposed between the outer cylinder and the center member, the outer cylinder A cylindrical fire protection cover covering the lower surface of the cylindrical elastic layer is fixed to the central member, and a communication passage is provided for communicating the inside and the outside of the fire protection cover. An axial spring characterized in that it is set longer than its thickness . 前記連通路は、中心材に形成されたことを特徴とする請求項１に記載の軸ばね。 The shaft spring according to claim 1 , wherein the communication passage is formed in a center member.
JP2015052844A 2015-03-17 2015-03-17 Shaft spring Expired - Fee Related JP6506058B2 (en)

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ATA137/2016A AT517290B1 (en) 2015-03-17 2016-03-14 Axle spring
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FR3049029B1 (en) 2016-03-18 2018-03-09 Hutchinson ANTIVIBRATION DEVICE FOR FIRE INTENDED FOR RAILWAY APPLICATION
JP6789094B2 (en) * 2016-12-21 2020-11-25 Ｔｏｙｏ Ｔｉｒｅ株式会社 Shaft spring
DE102017222009A1 (en) * 2017-12-06 2019-06-06 Contitech Luftfedersysteme Gmbh Spring device, spring system and vehicle
EP3712461A1 (en) * 2019-03-22 2020-09-23 GMT Gummi-Metall-Technik GmbH Spring element and fireproof coating
JP2023078952A (en) * 2021-11-26 2023-06-07 住友理工株式会社 Protection cover for axle spring and axle spring for railway vehicle

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE506125A (en) * 1950-10-31
FR2352189A1 (en) * 1976-05-18 1977-12-16 Carpano & Pons Variable vol. pneumatic time delay - has grooves in mating surfaces forming air passage in particular relative angular position
JPH0625561Y2 (en) * 1988-02-29 1994-07-06 昭和電線電纜株式会社 Seismic isolation isolators
JPH0367772U (en) * 1989-10-26 1991-07-02
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
JP2000088029A (en) * 1998-09-11 2000-03-28 Toyo Tire & Rubber Co Ltd Vibration isolating device
DE10306121B4 (en) * 2003-02-14 2009-06-04 Zf Sachs Ag Bellows for a bellows for hydraulic, hydropneumatic or pneumatic piston-cylinder units
JP2007278398A (en) * 2006-04-07 2007-10-25 Toyo Tire & Rubber Co Ltd Vibration control implement for vehicle
DE102011084684B3 (en) * 2011-10-18 2013-03-28 Zf Friedrichshafen Ag Vibration damper for vehicle bodywork, has ventilation channel including housing of terminal bearing, where housing includes center rod for elastomer body in ventilation channel that is carried out within center rod
CN202451691U (en) * 2012-01-11 2012-09-26 长沙市比亚迪汽车有限公司 Dust cover of damper
WO2014005847A1 (en) * 2012-07-03 2014-01-09 Continental Teves Ag & Co. Ohg Air spring strut
ES2507466B1 (en) 2014-07-24 2015-06-11 Metalocaucho, S.L. Fire retardant spring for primary rail bogie suspensions

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