WO1998013550A1 - Elastic pad, especially under-rail - Google Patents

Elastic pad, especially under-rail Download PDF

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Publication number
WO1998013550A1
WO1998013550A1 PCT/PL1997/000014 PL9700014W WO9813550A1 WO 1998013550 A1 WO1998013550 A1 WO 1998013550A1 PL 9700014 W PL9700014 W PL 9700014W WO 9813550 A1 WO9813550 A1 WO 9813550A1
Authority
WO
WIPO (PCT)
Prior art keywords
rail
pad
elastic
opposite sides
elastic pad
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.)
Ceased
Application number
PCT/PL1997/000014
Other languages
French (fr)
Inventor
Andrzej Kaczmarek
Irena WA$m(C)KOWSKA
Antoni CA$m(C)A
Krystyna CHABO$m(C)OWSKA
Jan Durski
Jan Jawecki
Andrzej Kaminski
Andrzej Oczykowski
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.)
Individual
Original Assignee
Individual
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
Priority to DK97924410T priority Critical patent/DK0928352T3/en
Priority to DE69716100T priority patent/DE69716100T2/en
Priority to AT97924410T priority patent/ATE225440T1/en
Priority to CA002272377A priority patent/CA2272377A1/en
Priority to US09/147,988 priority patent/US6342287B1/en
Priority to JP51553898A priority patent/JP2002515955A/en
Priority to AU56293/98A priority patent/AU726119B2/en
Priority to EP97924410A priority patent/EP0928352B1/en
Application filed by Individual filed Critical Individual
Priority to NZ334583A priority patent/NZ334583A/en
Priority to EEP199900097A priority patent/EE9900097A/en
Publication of WO1998013550A1 publication Critical patent/WO1998013550A1/en
Priority to LVP-99-50A priority patent/LV12321B/en
Anticipated expiration legal-status Critical
Priority to NO991531A priority patent/NO991531D0/en
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/68—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/68—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
    • E01B9/685—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair characterised by their shape
    • E01B9/686—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair characterised by their shape with textured surface
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/68—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
    • E01B9/681—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair characterised by the material
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/68—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
    • E01B9/685—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair characterised by their shape
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/2457—Parallel ribs and/or grooves

Definitions

  • the invention relates to an elastic pad, especially under-rail made from elastic plastic or rubber, being used mainly in permanent ways of rail transport as an element attenuating vibrations and absorbing dynamic loads 5 transmitted by vehicles to rails.
  • German patent specification No 865147 an elastic under-rail pad consisting of a thin middle plate and regularly spaced on the plate opposite projections projecting at both sides of this thin middle 0 plate, the projections having circular or the like cross-section
  • the studs projecting at both opposite sides of the core
  • the studs have two different heights and are offset to one another in such a way that the higher studs on the first side of the pad are opposed by the lower studs on the other side of the pad and the lower studs on the first side of the pad are opposed by the higher studs on the other side All studs are free standing without
  • An elastic pad according to the invention made from elastic plastic or rubber, having two opposite sides is characterized in that at least one of its 1
  • opposite sides is a surface which at least partly is defined at least approximately by a simple and/or composite trigonometric sinusoidal and/or cosinusoidal function so that at least on a part of one of two opposite sides of the elastic pad there are made protrusions and cavities arranged 5 alternately and changing softly one into another
  • At least on one of opposite sides of the elastic pad at least a part of all protrusions are rolls and at least a part of all cavities are grooves, the rolls and grooves are arranged alternately forming a wavy surface
  • the rolls and grooves run together side by side along straight lines lo and/or curves
  • At least a part of all protrusions are cupolas and at least a part of all cavities are bowls while each cupola is surrounded by four adjacent bowls and four adjacent surface fragments of i s saddle shape, the four bowls and four surface fragments of saddle shape are arranged alternately also each bowl is surrounded by four adjacent cupolas and four adjacent surface fragments of saddle shape, the four cupolas and four surface fragments of saddle shape are arranged alternately
  • the invention ensures to get very effective elastic pads especially 0 under-rail
  • the elastic pad according to the invention distorts mildly and softly that is why it well attenuates vibrations and absorbs impacts emerging during rolling of rail vehicle wheels on a fragment of the rail lying directly on this pad
  • the elastic pad according to the invention does not shift relating to the lower surface of a rail foot and/or 5 the upper surface of a sleeper, so it does not slip out of the gap between a rail foot and a sleeper, what prevents abrasive wear of the sleeper in its under-rail part and also protects the elastic pad according to the invention against wearing
  • compression of the elastic pad according to the invention in no its point there is a concentration of stresses and the material of protrusions transfers softly and freely, filling up cavities progressively
  • Figure 1 is a plan view of the first version of embodiment of an elastic under-rail pad according to the invention
  • Figure 2 is a cross-sectional view along the line A-A of Figure 1 of the same first version of embodiment of the pad
  • Figure 3 is an axonomet ⁇ c view also of the first version of embodiment of the pad
  • Figure 4 is partly a plan view and partly cross-sectional view along line D-D of Figure 5 of the second version of embodiment of an elastic under-rail pad
  • Figure 5 is a cross-sectional view along the line B-B of Figure 4 of the same second version of embodiment of the pad
  • Figure 6 is a cross-sectional view along the line C-C of Figure 4 of the same second version of embodiment of the pad
  • Figure 7 is an axonomet ⁇ c view also of the second version of the pad
  • Figure 8 is a plan view of the third version of embodiment of the lo elastic under-rail pad according to the invention, the view with use of geodesic lines illustrating the part of upper surface of the elastic pad that is defined by a composite trigonometric sinusoidal function
  • Figure 9 is a cross-sectional view along the line E-E of Figure 6 of the same third version of embodiment of the pad i s
  • Figure 10 is an axonomet ⁇ c view also of the third version of embodiment of the pad
  • protrusions being rolls 1 and cavities being grooves 2
  • the rolls 1 and grooves 2 are arranged alternately and change softly one into another creating a wavy cylindrical surface
  • the rolls 1 and grooves 2 run together side by side along straight parallel lines
  • the second version of embodiment of the elastic under-rail pad according to the invention differ from the first version of embodiment in that the rolls 1 a and grooves 2a run together side by side along curves being 0 concentric ellipses, the major axes of which lie on one of two axes of symmetry of the elastic pad and the minor axes e suitably on the other axis of symmetry of the pad
  • the rolls 1 a made on the upper side of the elastic under-rail pad according to the invention are crushed and squeezed so that material contained in them transfers softly 5 and freely, filling progressively the grooves 2a created on the same side of the pad Due to a sinusoidal shape of the rolls 1 a and grooves 2a during crushing of the rolls 1 a there is no shift of upper surface of the elastic under- rail pad according to the invention in relation to the lower surface of a rail foot
  • the rolls 1 a and grooves 2a run together side by 0 side along concentric ellipses, in the initial phase of distortion the rigidity of the elastic
  • protrusions being cupolas 3 and cavities being bowls 4
  • the i s cupolas 3 and bowls 4 are arranged alternately Each cupola 3 is surrounded by four adjacent bowl
  • the elastic under-rail pad according 5 to the invention distorts in such a way that the cupolas 3 created on the upper side of the pad are crushed and squeezed so that material contained in them transfers softly and freely filling progressively the bowls 4 created on the same side of the pad Due to a sinusoidal shape of the cupolas 3 and bowls 4, during crushing of the cupolas 3 by cyclic dynamic loads and
  • the surfaces of both opposite sides of the pad are defined by a simple and/or composite trigonometric sinusoidal and/or 10 cosinusoidal functions characterized by identical parameters or differing in period and/or amplitude and/or phase shift by a definite angle while it is advantageous when the sinusoidal or cosinusoidal function defining the upper side of the elastic pad according to the invention is characterized by a smaller period and a smaller amplitude than the sinusoidal or cosinusoidal i s function defining the lower side of the pad

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Railway Tracks (AREA)
  • Springs (AREA)
  • Vibration Prevention Devices (AREA)
  • Massaging Devices (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Seats For Vehicles (AREA)
  • Vibration Dampers (AREA)

Abstract

An elastic pad, especially under-rail, made of an elastic plastic or rubber, has two opposite sides. At least one of its opposite sides is a surface which at least partly is defined at least approximately by a simple and/or composite trigonometric sinusoidal and/or cosinusoidal function so that at least on a part of one of two opposite sides of the elastic pad there are made protrusions (3) and cavities (4) arranged alternately and changing softly one into another. The elastic pad is used mainly in permanent ways of rail transport as an element attenuating vibrations and absorbing dynamic loads transmitted by vehicles to rails.

Description

E l a s t i c p a d , e s p e c i a l l y u n d e r - r a i l
The invention relates to an elastic pad, especially under-rail made from elastic plastic or rubber, being used mainly in permanent ways of rail transport as an element attenuating vibrations and absorbing dynamic loads 5 transmitted by vehicles to rails.
There are known many design solutions of elastic under-rail pads of a general rectangular flat shape, made from plastic or rubber, used in rail transport permanent ways as an element attenuating vibrations and absorbing dynamic loads Every plastic under-rail pad has two opposite 10 sides, one of them designed to overlie the upper face of a rail foundation member or the upper face of a metal bearing plate and the other side designed to underlie the lower face of a rail foot or the lower face of a metal washer One or two opposite sides of the pads are provided with different profiles such as grooves, posts and other projections to improve dynamic i s properties of the elastic under-rail pads and to reduce dynamic surpluses transmitted to a rail foundation
There is known from German patent specification No 865147 an elastic under-rail pad consisting of a thin middle plate and regularly spaced on the plate opposite projections projecting at both sides of this thin middle 0 plate, the projections having circular or the like cross-section
There is known from French patent specification No 121 1567 an elastic under-rail pad having at its two main sides many cylindrical projections or projections in the form of a truncated cone, spaced regularly on these two sides in such a way that projections at one side are directly opposite projections of the other side of the pad
There is known from British patent specification No 946936 an elastic under-rail pad having a number of separate areas bearing load, being in the form of truncated hexagonal projections shaped as a pyramid, which are on both opposite sides of the pad and are separated from one another with 0 grooves of the V letter shape. The hexagonal projections on the opposite sides of the pad are directly opposite one another In particular embodiments of the pad the projections on one side of the pad are rounded conical or flat
There is known from European patent specification No 169685 an elastic under-rail pad consisting of a membrane made from an elastic material, for example from natural rubber, and of projections of stud-like shape projecting in opposite directions at both main sides of the pad These stud-like projections having generally cylindrical shape are of the same size and evenly spaced across both sides of the pad
There is known from USA patent specification No 4648554 and lo European patent application No 279094 an elastic under-rail pad comprising many spaced apart circular dimples formed on opposite sides of the pad Centres of said circular dimples formed on one side of the under-rail pad are offset parallelly in lateral direction relative to the centres of the circular dimples formed on the opposite side of the pad so that the pads form i s a network of interlock arch bridge portions when said pad is viewed in cross- section Each of most circular dimples on one side of the pad lies between four dimples situated on the opposite side of the pad
There is also known from USA patent specification no 4971247 an elastic under-rail pad having projections in the form of separate islands for 0 example chevron-shaped, on one side or on both opposite sides
There is also known from USA patent specification No 5195679 an elastic under-rail pad having protrusions which are offset on one side of the pad relating to protrusions on the other side of the pad so that when the pad is horizontal no vertical line passes through more than one protrusion Each 5 protrusion is a separated island and it has its end face of circular or rectangular shape The protrusions are short cylinders or elongated rectangular prisms
There is also known from USA patent specification No 5335850 an elastic under-rail pad consisting of a central core and many regularly spaced
30 studs projecting at both opposite sides of the core The studs have two different heights and are offset to one another in such a way that the higher studs on the first side of the pad are opposed by the lower studs on the other side of the pad and the lower studs on the first side of the pad are opposed by the higher studs on the other side All studs are free standing without
15 interconnection therebetween above said core and have encircling sidewalls of outward convex curvature
An elastic pad according to the invention, made from elastic plastic or rubber, having two opposite sides is characterized in that at least one of its 1
opposite sides is a surface which at least partly is defined at least approximately by a simple and/or composite trigonometric sinusoidal and/or cosinusoidal function so that at least on a part of one of two opposite sides of the elastic pad there are made protrusions and cavities arranged 5 alternately and changing softly one into another
It is advantageous if at least on one of opposite sides of the elastic pad at least a part of all protrusions are rolls and at least a part of all cavities are grooves, the rolls and grooves are arranged alternately forming a wavy surface The rolls and grooves run together side by side along straight lines lo and/or curves
It is also advantageous if at least on one of opposite sides of the elastic pad according to the invention, at least a part of all protrusions are cupolas and at least a part of all cavities are bowls while each cupola is surrounded by four adjacent bowls and four adjacent surface fragments of i s saddle shape, the four bowls and four surface fragments of saddle shape are arranged alternately also each bowl is surrounded by four adjacent cupolas and four adjacent surface fragments of saddle shape, the four cupolas and four surface fragments of saddle shape are arranged alternately
The invention ensures to get very effective elastic pads especially 0 under-rail During passage of a rail vehicle the elastic pad according to the invention distorts mildly and softly that is why it well attenuates vibrations and absorbs impacts emerging during rolling of rail vehicle wheels on a fragment of the rail lying directly on this pad The elastic pad according to the invention, does not shift relating to the lower surface of a rail foot and/or 5 the upper surface of a sleeper, so it does not slip out of the gap between a rail foot and a sleeper, what prevents abrasive wear of the sleeper in its under-rail part and also protects the elastic pad according to the invention against wearing During compression of the elastic pad according to the invention, in no its point there is a concentration of stresses and the material of protrusions transfers softly and freely, filling up cavities progressively The invention will now be described by way of examples and with reference to the accompanying drawings in which
Figure 1 is a plan view of the first version of embodiment of an elastic under-rail pad according to the invention, Figure 2 is a cross-sectional view along the line A-A of Figure 1 of the same first version of embodiment of the pad,
Figure 3 is an axonometπc view also of the first version of embodiment of the pad, Figure 4 is partly a plan view and partly cross-sectional view along line D-D of Figure 5 of the second version of embodiment of an elastic under-rail pad,
Figure 5 is a cross-sectional view along the line B-B of Figure 4 of the same second version of embodiment of the pad,
Figure 6 is a cross-sectional view along the line C-C of Figure 4 of the same second version of embodiment of the pad,
Figure 7 is an axonometπc view also of the second version of the pad Figure 8 is a plan view of the third version of embodiment of the lo elastic under-rail pad according to the invention, the view with use of geodesic lines illustrating the part of upper surface of the elastic pad that is defined by a composite trigonometric sinusoidal function
Figure 9 is a cross-sectional view along the line E-E of Figure 6 of the same third version of embodiment of the pad i s Figure 10 is an axonometπc view also of the third version of embodiment of the pad
In the first version of embodiment of the elastic under-rail pad according to the invention, made from an elastic plastic one of two opposite sides, the upper one designed to contact with the lower surface of a rail foot 20 is a surface defined by a simple trigonometric sinusoidal function the equation of which in rectangular coordinates, called also Cartesian coordinates is as follows z = a • sin x, y = b, where a and b are numerical coefficients, the coefficient a is different from zero (a ≠ 0) while x y z are coordinates of Cartesian rectangular coordinate system created in such a 5 way that the coordinate axes x and y are parallel to the lower surface of a rail foot and the coordinate axis z is perpendicular to the same surface On the upper side of the pad according to the invention there are created protrusions being rolls 1 and cavities being grooves 2 The rolls 1 and grooves 2 are arranged alternately and change softly one into another creating a wavy cylindrical surface The rolls 1 and grooves 2 run together side by side along straight parallel lines so they run at a constant distance between them Whereas the other lower side of the elastic under-rail pad according to the invention, designed to contact with the upper surface of rail foundation, is a flat surface s During passage of a rail vehicle the elastic under-rail pad according to the invention, distorts mildly and softly, that is why it well attenuates vibrations and absorbs impacts emerging during rolling of rail vehicle wheels of a fragment of the rail lying directly on this pad In the initial phase of distortion the rolls 1 , made on the upper side of the elastic under-rail pad according to the invention, are crushed and squeezed so that material contained in them transfers softly and freely filling progressively the grooves 2 created on the same side of the pad Due to a sinusoidal shape of the rolls s 1 and grooves 2, during crushing of the rolls 1 by cyclic dynamic loads and vibrations emerging during passage of a rail vehicle there is no slip between the surface of rolls 1 and the lower surface of a rail foot what restricts advantageously wear of the elastic under-rail pad caused by grinding As the distortion, caused by squeezing and crushing the elastic lo under-rail pad according to the invention, increases the rolls 1 are squeezed so that the grooves 2 are completely filled up From this moment the elastic under-rail pad according to the invention becomes completely flat and that is why it is significantly more rigid and its further distortion may occur under significantly higher load increase only This change in rigidity of I s the elastic under-rail pad according to the invention restricts turn of rails in a track curve under influence of lateral forces
The second version of embodiment of the elastic under-rail pad according to the invention differ from the first version of embodiment in that the rolls 1 a and grooves 2a run together side by side along curves being 0 concentric ellipses, the major axes of which lie on one of two axes of symmetry of the elastic pad and the minor axes e suitably on the other axis of symmetry of the pad In the initial phase of distortion the rolls 1 a made on the upper side of the elastic under-rail pad according to the invention are crushed and squeezed so that material contained in them transfers softly 5 and freely, filling progressively the grooves 2a created on the same side of the pad Due to a sinusoidal shape of the rolls 1 a and grooves 2a during crushing of the rolls 1 a there is no shift of upper surface of the elastic under- rail pad according to the invention in relation to the lower surface of a rail foot On the account that the rolls 1 a and grooves 2a run together side by 0 side along concentric ellipses, in the initial phase of distortion the rigidity of the elastic under-rail pad according to the invention is different in different fragments of its upper surface
There are also possible such embodiments of elastic pad according to the invention that they contain all the design features of the first or second s version, excluding one Namely the rolls and grooves in those other embodiments run together side by side partly along straight lines and partly along curves at a constant distance between them In still different embodiments the rolls and grooves run side by side coming closer and/or going away from one another
In the third version of embodiment of the elastic under-rail pad according to the invention, made from an elastic plastic one of two opposite sides, the upper one designed to contact with the lower surface of a rail foot is a surface defined by a composite trigonometric sinusoidal function the equation of which in rectangular coordinates, called also Cartesian coordinates is as follows z = a • sin x + b ■ sin y, where a and b are numerical coefficients different from zero (a zt 0, b ≠ 0), while x, y z are ιo coordinates of Cartesian rectangular coordinate system created in such a way that the coordinate axes x and y are parallel to the lower surface of a rail foot and the coordinate axis z is perpendicular to the same surface On the upper side of the elastic under-rail pad, according to the invention there are created protrusions being cupolas 3 and cavities being bowls 4 The i s cupolas 3 and bowls 4 are arranged alternately Each cupola 3 is surrounded by four adjacent bowls and four adjacent surface fragments of saddle shape 5, the four bowls 4 and four surface fragments of saddle shape 5 are arranged alternately Also each bowl 4 is surrounded by four adjacent cupolas 3 and four adjacent surface fragments of saddle shape 5 the four 0 cupolas 3 and four surface fragments of saddle shape 5 are arranged alternately Whereas the other lower side of the elastic under-rail pad according to the invention, designed to contact with the upper surface of a rail foundation, is a flat surface
During passage of a rail vehicle the elastic under-rail pad according 5 to the invention distorts in such a way that the cupolas 3 created on the upper side of the pad are crushed and squeezed so that material contained in them transfers softly and freely filling progressively the bowls 4 created on the same side of the pad Due to a sinusoidal shape of the cupolas 3 and bowls 4, during crushing of the cupolas 3 by cyclic dynamic loads and
3 vibrations, emerging duπng passage of a rail vehicle there is no slip between the surface of cupolas 3 and the lower surface of a rail foot what restricts advantageously wear of the elastic under-rail pad caused by grinding As the distortion, caused by squeezing and crushing the elastic under-rail pad according to the invention, increases, the cupolas 3 are squeezed so that the bowls 4 are completely filled up From this moment the elastic under-rail pad according to the invention becomes completely flat and that is why it is significantly more rigid and its further distortion may occur under significantly higher load increase only This change in rigidity of the elastic under-rail pad according to the invention restricts turn of rails in track curve under influence of lateral forces
There are possible such embodiments of the elastic pad according to the invention that there are utilized together features of the surface defined 5 by both simple and composite trigonometric sinusoidal and/or cosinusoidal functions on the same surface of the pad
There are also possible such embodiments of the elastic pad according to the invention that the surfaces of both opposite sides of the pad are defined by a simple and/or composite trigonometric sinusoidal and/or 10 cosinusoidal functions characterized by identical parameters or differing in period and/or amplitude and/or phase shift by a definite angle while it is advantageous when the sinusoidal or cosinusoidal function defining the upper side of the elastic pad according to the invention is characterized by a smaller period and a smaller amplitude than the sinusoidal or cosinusoidal i s function defining the lower side of the pad
There are also possible such embodiments of the elastic pad according to the invention that surface of one side or the surfaces of both opposite sides of the pad are defined approximately by simple and/or composite trigonometric sinusoidal and/or cosinusoidal functions

Claims

Claims
An elastic pad, especially under-rail, made preferably from elastic plastic or rubber having two opposite sides, ch a r a ct e r i ze d i n that at least one of its opposite sides is a surface which at least partly is defined at least approximately by a simple and/or composite trigonometric sinusoidal and/or cosinusoidal function so that at least on a part of one of two opposite sides of the elastic pad there are made protrusions and cavities arranged alternately and changing softly one into another An elastic pad as claimed in Claim 1, c h a r a ct e r i ze d i n that at least on one of the opposite sides at least a part of all protrusions a rolls (1, 1a) and at least a part of all cavities are grooves (2 2a) the rolls (1, 1a) and grooves (2, 2a) being arranged alternately forming a wavy surface An elastic pad as claimed in Claim 2, c h a r a c t e r i z e d i n that the rolls (1, 1a) and grooves (2, 2a) run side by side along straight lines and/or curves An elastic pad as claimed in Claim 1 c h a r a c t e r i z e d i n that on one of its opposite sides, at least a part of all protrusions are cupolas
(3) and at least a part of all cavities are bowls (4) while each cupola (3) is surrounded by four adjacent bowls (4) and four adjacent surface fragments of saddle shape (5), the four bowls (4) and four surface fragments of saddle shape (5) are arranged alternately also each bowl
(4) is surrounded by four adjacent cupolas (3) and four adjacent surface fragments of saddle shape (5), the four cupolas (3) and four surface fragments of saddle shape (5) are arranged alternately
PCT/PL1997/000014 1996-09-27 1997-06-09 Elastic pad, especially under-rail Ceased WO1998013550A1 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
AU56293/98A AU726119B2 (en) 1996-09-27 1997-06-09 Elastic pad, especially under-rail
AT97924410T ATE225440T1 (en) 1996-09-27 1997-06-09 ELASTIC CUSHION, ESPECIALLY RAIL BASE
CA002272377A CA2272377A1 (en) 1996-09-27 1997-06-09 Elastic pad, especially under-rail
US09/147,988 US6342287B1 (en) 1996-09-27 1997-06-09 Elastic pad, especially under-rail
JP51553898A JP2002515955A (en) 1996-09-27 1997-06-09 Elastic pads, especially for underlaying rails
EP97924410A EP0928352B1 (en) 1996-09-27 1997-06-09 Elastic pad, especially under-rail
NZ334583A NZ334583A (en) 1996-09-27 1997-06-09 Elastic pad for under-rail
DK97924410T DK0928352T3 (en) 1996-09-27 1997-06-09 Elastic cushion, especially rails
DE69716100T DE69716100T2 (en) 1996-09-27 1997-06-09 ELASTIC CUSHION, IN PARTICULAR RAIL PAD
EEP199900097A EE9900097A (en) 1996-09-27 1997-06-09 Elastic cushion, especially for positioning under the rail
LVP-99-50A LV12321B (en) 1996-09-27 1999-03-25 Elastic pad, especially under-rail
NO991531A NO991531D0 (en) 1996-09-27 1999-03-29 Spring pad, especially for use under a rail

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PLP.316320 1996-09-27
PL96316320A PL182966B1 (en) 1996-09-27 1997-06-09 Elastic separator in particular that being placed between a rail and its supporting member

Publications (1)

Publication Number Publication Date
WO1998013550A1 true WO1998013550A1 (en) 1998-04-02

Family

ID=20068371

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PL1997/000014 Ceased WO1998013550A1 (en) 1996-09-27 1997-06-09 Elastic pad, especially under-rail

Country Status (23)

Country Link
US (1) US6342287B1 (en)
EP (1) EP0928352B1 (en)
JP (1) JP2002515955A (en)
KR (1) KR20000036237A (en)
CN (1) CN1236412A (en)
AT (1) ATE225440T1 (en)
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EP1234075A4 (en) * 1999-11-18 2004-12-15 Lee Gye Jun Support for supporting rail of railway
US7100837B2 (en) 2003-04-09 2006-09-05 Airboss Railway Products, Inc. Rail seat assembly
EP2180096A3 (en) * 2008-10-23 2013-12-04 Desarrollos y Fabricación, DYF S.A. Box of intermediate plates having an elastic plate of adjustable elasticity
EP2559810A3 (en) * 2011-08-13 2014-12-17 Calenberg Ingenieure GmbH Elastomer bearing
GB2638946A (en) * 2024-01-21 2025-09-10 Charles Nelson David Audio or audio-visual component support device to improve sound and picture quality

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RU2250280C1 (en) * 2003-11-06 2005-04-20 Открытое акционерное общество "Асбестовые и резиновые технические изделия" (ОАО "АРТИ") Flexible multilayer combination gasket-shock absorber
PL1607544T3 (en) * 2004-06-17 2009-08-31 Heimbach Gmbh & Co Kg Sound damping arrangement for a wall, ceiling or floor covering
RU2287038C2 (en) * 2005-01-17 2006-11-10 Андреев Андрей Витальевич Elastic gasket
US20080106014A1 (en) * 2006-11-07 2008-05-08 Gigl Joseph J Pad for reducing or dampening noise or vibration
KR100926266B1 (en) * 2007-06-27 2009-11-12 주식회사 이천텍 Freeze Protection Water Meter
DE102008007495A1 (en) * 2008-02-05 2009-08-06 Semperit Ag Holding Shim and method of making the same
US8764307B2 (en) * 2010-10-29 2014-07-01 Koyo Bearings Usa Llc Roller thrust bearing vibration isolator
US9103074B1 (en) * 2012-12-21 2015-08-11 Koppers Delaware, Inc. Modular insulated tie plate
US20150008302A1 (en) * 2013-07-03 2015-01-08 Eagle Fan Flexible support apparatus
JP6294026B2 (en) * 2013-08-02 2018-03-14 インターマン株式会社 Acoustic adjustment device
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PL3044372T3 (en) * 2013-09-13 2021-08-23 Schwihag Ag System having a rail fastening system and a ballastless railway track
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CN105525540B (en) * 2016-02-15 2017-06-13 北京博源天衡科技有限公司 It is a kind of to be supported without inclination variable rigidity shock absorption
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CN109385933B (en) * 2017-08-04 2024-08-23 洛阳双瑞橡塑科技有限公司 A vibration-damping fastener system for a multi-layer pad
JP2020097882A (en) * 2018-12-14 2020-06-25 鉄道軌材工業株式会社 Track pad and polyamide resin composition suitable for manufacturing the track pad
PL74029Y1 (en) * 2020-01-30 2025-08-25 Ak Spolka Z Ograniczona Odpowiedzialnoscia Underrail shock absorber pad
PL440290A1 (en) * 2022-02-02 2023-08-07 Politechnika Krakowska im.Tadeusza Kościuszki Shaped under sleeper pad
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1234075A4 (en) * 1999-11-18 2004-12-15 Lee Gye Jun Support for supporting rail of railway
US7100837B2 (en) 2003-04-09 2006-09-05 Airboss Railway Products, Inc. Rail seat assembly
EP2180096A3 (en) * 2008-10-23 2013-12-04 Desarrollos y Fabricación, DYF S.A. Box of intermediate plates having an elastic plate of adjustable elasticity
EP2559810A3 (en) * 2011-08-13 2014-12-17 Calenberg Ingenieure GmbH Elastomer bearing
GB2638946A (en) * 2024-01-21 2025-09-10 Charles Nelson David Audio or audio-visual component support device to improve sound and picture quality

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ES2185020T3 (en) 2003-04-16
KR20000036237A (en) 2000-06-26
PL182966B1 (en) 2002-05-31
CA2272377A1 (en) 1998-04-02
PL316320A1 (en) 1998-03-30
ATE225440T1 (en) 2002-10-15
CZ83799A3 (en) 1999-12-15
LV12321B (en) 1999-12-20
CN1236412A (en) 1999-11-24
LT99023A (en) 1999-06-25
LT4543B (en) 1999-08-25
ID18338A (en) 1998-04-02
NZ334583A (en) 2000-10-27
US6342287B1 (en) 2002-01-29
DK0928352T3 (en) 2002-10-28
JP2002515955A (en) 2002-05-28
EP0928352B1 (en) 2002-10-02
AU5629398A (en) 1998-04-17
LV12321A (en) 1999-07-20
HUP0000051A2 (en) 2000-05-28
NO991531L (en) 1999-03-29
RU2173370C2 (en) 2001-09-10
DE69716100T2 (en) 2003-02-27
AU726119B2 (en) 2000-11-02
NO991531D0 (en) 1999-03-29
EP0928352A1 (en) 1999-07-14
CZ13005U1 (en) 2003-02-10
PT928352E (en) 2003-01-31
EE9900097A (en) 1999-10-15
DE69716100D1 (en) 2002-11-07

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