• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A coated crossmember (1) comprises a pre-stressed reinforced concrete cross-member (2) for railway rails and a trough (3) which functions as a covering for said crossmember (2); the characteristic of said coated crossmember (1) consists in that the side edges (30) and the bottom wall (31) of the bowl (3) are of deformable elastomeric material.
    公开号:FR3062401A3
    申请号:FR1850830
    申请日:2018-01-31
    公开日:2018-08-03
    发明作者:Stefano Lucarini
    申请人:Margaritelli Ferroviaria SpA；
    IPC主号:
    专利说明:

    COVERED TRAVERSE
    The present patent application for utility model relates to a concrete sleeper, intended to be partially embedded in a concrete slab, on which are laid the railroad rails. In this regard, it is recalled that recently, especially for the realization of rails for metropolitan trains, the technique of laying rail sleepers no longer on the traditional bed of stones, the so-called ballast, but on a run-in track. concrete is more and more diffuse.
    To better understand the innovative features of the cross of the invention and its advantages, it is described below, summarily, the state of the art with reference to railway sleepers to be placed on concrete slabs.
    It should also be noted that said concrete sleepers are conventionally coated with layers of plastic material in order to absorb and stifle the vibrations and noise caused by the passage of convoys.
    Figures 1 and 2 describe the execution of two variants of a cross-member coated according to the conventional technique, indicated by reference numerals 101 and 101a. In particular, Figures 1 and 2 are sections of a cross-lapped conventional technique in a vertical plane, orthogonal to the longitudinal axis of said cross.
    The coated crossmember 101 of FIG. 1 comprises a rail 102 rail, made of concrete and introduced into a bowl 103 of coating. The bowl 103 is made of rigid plastic and is embedded in the concrete slab 104. The bowl 103 has a parallelepipedal shape and comprises an upper opening delimited by edges arranged flush with the slab 104. The cross-member 102 protrudes beyond said edges of the upper opening of the bowl 103.
    The bowl 103 comprises a cushion cushion 131, positioned between the bottom wall of the bowl 103 and the bottom wall of the crosspiece 102. This pad 131 serves to quell the vibrations and noises caused by the passage of a railway train above the crossbar 102. Indeed, thanks to the deformable characteristic of the pad 131, the cross member 102 can perform vertical movements inside the bowl 103 so as to reduce noise and vibration.
    Said coated cross-member 101 has the disadvantage that in the long run the gap A between the side walls of the cross-member 102 and the side edges of the bowl 103 fills with dust and debris, preventing upward movement. the bottom of the crosspiece 102 and therefore the damping action of the rubber layer of the bowl 103.
    To overcome this drawback, an improved coated cross member 101a has already been proposed and available on the market, as illustrated in FIG. 2 and it is characterized in that the relative bowl 103 is provided with perimeter sealing seals made of rubber, arranged to cover the mouth of the upper perimeter of the gap A. These seals 132, although guaranteeing the sealing of the mouth of said gap A, do not prevent the races up-the bottom of the crossbar 102, because said seals are in turn elastically deformable.
    In any case, it is obvious that the introduction of said seals has complications and increased costs of producing the coated crossmember 101a of FIG. 2 with respect to the coated cross member 101 of FIG. 1.
    The object of the invention is therefore to overcome the disadvantages of the conventional technique by providing a coated rail rail crossbar for effective damping of vibration and noise caused by the passage of a train on said cross.
    Another goal is to achieve a coated cross which is economical to achieve and easy and quick to implement and replace on the line.
    A further aim is to invent a method for producing the coated crossmember according to the invention.
    A coated rail rail cross member according to the invention comprises a concrete cross-member and a trough anchored thereto which functions as a cladding for said cross-member.
    The specificity of the coated transom of the invention consists in that the bowl is made of deformable elastomeric material, so as to deform and stifle the noise and vibrations produced by the passage of the trains on the coated transom.
    The present invention therefore relates to a coated cross member, characterized in that it comprises: - a monobloc sleeper pre-stressed reinforced concrete rail rails; - a bowl, which functions as a coating for said cross; said bowl comprising side edges and a bottom wall of deformable elastomeric material.
    The lateral edges and the bottom wall of the cuvette may have a disseminated internal surface of a plurality of protuberances, embedded in the prestressed reinforced concrete mass of the crossmember.
    Said protuberances may be mushroom-shaped piles or a reticle of ribs.
    The side edges and the bottom wall of the bowl may include a smooth outer surface.
    The bowl may have a monolithic structure.
    The bowl may have a modular structure that includes the side edges and the bottom wall molded separately from each other.
    The description of the coated transom of the invention, for a clearer explanation, refers to the accompanying drawings, reported by way of non-limiting example, in which: FIGS. 1 and 2 are sections of two variants of the transom coated with the conventional technique, according to a vertical plane orthogonal to the longitudinal axis of said cross; FIG. 3 is an axonometric view of the coated transom of the invention; FIG. 4 is a section of the coated crossmember of FIG. 3 in a vertical plane orthogonal to the longitudinal axis of the cross.
    With reference to FIGS. 3 and 4, a coated crossmember according to the invention, generally indicated under reference numeral 1, is described.
    The coated crossmember 1 comprises a monobloc cross member 2 for parallelepiped-shaped rail rails and a bowl 3, which functions as a covering for said crossmember 2. In particular, the crossmember 2 is prestressed reinforced concrete and is produced by casting the prestressed concrete inside the bowl 3. The bowl 3 is intended to be enclosed within a concrete slab 4, so that the upper part of the crossbar 2 overflows with respect to the upper surface of the slab 4.
    The bowl 3 comprises four lateral edges 30 and a horizontal bottom wall 31. The bowl 3 has an upper opening, delimited by the upper edges of the lateral edges 30. The upper surface of the crosspiece 2 projects higher than the upper edges of the lateral edges 30 of the bowl 3.
    The lateral edges 30 and the bottom wall 31 of the bowl 3 may have a smooth outer surface and an inner surface provided with a plurality of protuberances 32 which project towards the hollow part of said bowl 3. The protuberances 32 are embedded in the prestressed reinforced concrete mass of the sleeper 2.
    Advantageously, said protrusions 32 may consist of a series of tufted mushroom-shaped piles or a reticle of ribs. The protuberances 32 have the function of anchoring the bowl 3 to the crossbar 2. It is obvious indeed that the moment when inside said bowl 3 is poured the prestressed concrete for the realization of the cross 2, the dough cement infiltrates and consolidates in the interstices present between said protuberances 32, thus achieving a multitude of connection points to be embedded between the walls of the bowl 3 and the crossbar 2.
    The lateral edges 30 and the bottom wall 31 of the bowl 3 are of deformable elastomeric material, so as to stifle the noise and vibrations caused by the passage of trains on the coated crossmember 1. In particular, the bottom wall 31 of the bowl 3 elastically deforms by crushing, bringing the major and most important contribution to the action of quenching and lessening vibrations, resulting in a reduction of the noise produced by the passage of the railway train over the On the other hand, the side edges 30, also being made of elastomer, are able to deform so as not to prevent the alternating upward and downward strokes of the crossbar 2 under the effect of the vibrations transmitted to it during the passage of the convoy. In the preferred embodiment, the elastomer used for producing the side edges 30 is able to deform elastically, so as to consent to the cross member 2 a vertical movement.
    The description continues with reference to the method of producing the coated cross member 1. The side edges 30 and the bottom wall 31 of the bowl 3 are made by molding, using a deformable elastomeric material.
    The reinforcing bars of the cross member 2 are disposed inside the bowl 3, which in turn is positioned inside a mold or a formwork, of the conventional type, having an impression in accordance with the cross member 2 and adapted to receive the cast of prestressed concrete for forming the cross 2.
    The walls of the cross-member 2 are therefore in contact with both the internal surfaces of the lateral edges 30 and of the bottom wall 31 of the bowl 3.
    Prestressed concrete is poured into the mold. When the concrete has solidified, the coated crosspiece 1 is removed from said mold. It should be noted that the bowl 3 could be made in a monolithic version or by assembling its side edges 30 and its bottom wall 31, formed separately from one another by molding. If a monolithic bowl is used, it is placed in the cavity of said mold, whereas if a bowl 3 with adjustable walls is used, then the side walls of said cavity are coated by the lateral edges 30 of the mold. the bowl 3, while the bottom wall of said cavity is coated by the bottom wall 31 of the bowl 3.
    The implementation of the coated crossmember 1 in the concrete slab 4 requires only one operation, that is to say, to embed the coated crossmember 1 in the casting of the slab 4; vice versa, contrary to what is true by adopting the coated rails of the prior art, illustrated in FIG. 2, it is not necessary to carry out finishing and / or sealing operations after embedding the coated crossmember 1 in the slab 4.
    It should also be noted another advantage presented by the coated transom 1 of the invention as regards the simplicity and speed of operations necessary for its replacement. Indeed, the extraction of the coated cross member 1 of the slab 4 in which it is embedded can be easily performed thanks to the outer surface, perfectly smooth, side edges 30, which can therefore freely slide, from the bottom to the top relative to the slab 4 which houses said coated crossmember 1.
    Furthermore, it should be noted that the extraction phase of the coated cross member 1 of the slab 4 is effected by a single operation of lifting the cross member 2, with the relative retaining bowl 3 which is anchored therein. In contrast, the replacement of a conventional type of coated transom comprises two successive interventions, the first to extract and lift the concrete crossbar 102 of the bowl 103, then the extraction of the bowl 103 of the slab 104.
    权利要求:
    Claims (6)
    [1" id="c-fr-0001]
    1) Coated cross member (1), characterized in that it comprises: - a crossbar (2) monobloc prestressed reinforced concrete for rail rails; - a bowl (3), which functions as a coating for said crossbar (2); said bowl (3) comprising side edges (30) and a bottom wall (31) of deformable elastomeric material.
    [0002]
    2) coated crossmember (1) according to claim 1, characterized in that the side edges (30) and the bottom wall (31) of the bowl (3) have a disseminated internal surface of a plurality of protuberances (32). ), embedded in the prestressed reinforced concrete mass of the cross member (2).
    [0003]
    3) coated cross member (1) according to claim 2, characterized in that said protuberances (32) are mushroom-shaped piles or a reticle of ribs.
    [0004]
    4) Coated cross (1) according to any one of claims 1 to 3, characterized in that the side edges (30) and the bottom wall (31) of the bowl (3) comprise a smooth outer surface.
    [0005]
    5) coated cross member (1) according to any one of claims 1 to 4, characterized in that the bowl (3) has a monolithic structure.
    [0006]
    6) coated cross member (1) according to any one of claims 1 to 4, characterized in that the bowl (3) has a flexible structure which comprises the side edges (30) and the bottom wall (31) molded separately from each other.
    类似技术:
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    同族专利:
    公开号 | 公开日
    EP3358077A1|2018-08-08|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE2659161A1|1976-12-28|1978-07-06|Zueblin Ag|BALLLESS RAILWAY CONSTRUCTION|
    FR2771760B1|1997-12-01|2000-02-18|Vagneux Traverses Beton|RAILWAY CROSSING CARRYING SLIPPERS, AND SLIPPERS FOR SUCH CROSSINGS|
    NL2007388C2|2011-09-09|2013-03-12|Edilon Sedra B V|Resilient rail support block assembly and manufacturing thereof.|KR20210099551A|2020-01-28|2021-08-12|소니빌 아게|Block Boots for Rail Track Systems|
    CN111663375B|2020-06-18|2022-01-04|成都市新筑路桥机械股份有限公司|Novel beam type embedded track system and construction and maintenance process thereof|
    法律状态:
    2020-02-21| RX| Complete rejection|Effective date: 20200115 |
    优先权:
    申请号 | 申请日 | 专利标题
    IT201700010817|2017-02-01|
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