WO2012146235A1

WO2012146235A1 - Heat insulation for railway rails

Info

Publication number: WO2012146235A1
Application number: PCT/DE2012/000429
Authority: WO
Inventors: Bernd Fichtner
Original assignee: Ean Elektroschaltanlagen Gmbh
Priority date: 2011-04-29
Filing date: 2012-04-24
Publication date: 2012-11-01
Also published as: DE102011100079A1; EP2702206A1; CN103534412B; CN103534412A; RU2013152799A; EP2702206B1; RU2557095C2

Abstract

The invention relates to heat insulation (100) for railway rails (102), comprising at least one inner insulation element (501) and at least one outer insulation element (101), that are formed so as to be mounted parallel to each other on a railway rail (102), such that, in the mounted state, the outer insulation element (101) surrounds a lateral end region (105) of the rail foot (104) in a form-fitting manner, the upper part (108) of the outer insulation element extending in the longitudinal direction along the rail (102), opposite the rail web (103) and at a distance (109) therefrom (103), and a lower part (106) of the outer insulation element extending on the lower side of the rail (102). The inner insulation element (501) is arranged in the region of the distance (109) between the outer insulation element (101) and the rail web (103) and is held on the railway rail (102) by means of the outer insulation element (101).

Description

Thermal insulation for railroad tracks

The invention relates to a thermal insulation for railroad tracks. In particular, the invention relates to a thermal insulation for railroad tracks, which consists of several prefabricated elements.

In order to maintain the functionality of switches for railway traffic in winter, it is necessary to avoid freezing of the rails or points in snow and ice.

It is known to use thermal insulation or thermal insulation to prevent heat loss to the rails when heating the same in winter.

From the document WO2009 / 109664 A1 a point heating system is known in which the flow and return of a heating line is covered externally with insulating material. The insulation of the heating cable is done by foaming on site. The rail foot is insulated by means of a prefabricated insulation thermally outwards.

A disadvantage of the thermal insulation of the prior art, however, is that they often have only a relatively low mechanical strength, which is particularly at

High-speed lines can cause problems. In addition, it may be for maintenance of the point heating system, for example, if disturbances of

Heating elements are present at the switch, be necessary, a complicated

Disassembly and assembly process of the thermal insulation or insulating

carry out, which is associated with a high cost and time.

In DE 44 23 331 A1 also a noise-reducing railway superstructure is described which has filler which are arranged continuously in the longitudinal direction along the rail web to cover the rail web, wherein the filler to absorb the airborne sound at their rail

opposite side have a chamber-like shape.

The object of the invention is to provide an effective thermal insulation for railway turnouts, which is easy to assemble and has a high mechanical strength and stability. The object is achieved by the thermal insulation for railroad tracks according to independent claim 1.

According to the independent claim is an outer insulation element of a

Thermal insulation provided for railroad tracks.

According to the invention, a thermal insulation for railroad tracks is provided with at least one inner insulation element and at least one outer insulation element. The inner insulation element and the outer insulation element are shaped so that they can be mounted parallel to each other on a rail track, so that in the assembled state, the Außenendämmelement includes a lateral end portion of the rail foot form fit and longitudinally along the rail both opposite the rail web, with a Distance to the rail web, as well as extends to the bottom of the rail. In this case, the inner insulation element is arranged in the region of the distance between the outer insulation element and the rail web and is held by means of the outer dam element on the rail track.

An advantage of the invention is that due to the modular construction a simple mounting is made possible. Preferably, the outer and inner insulation elements are made of a stable and heat-insulating material.

In a preferred embodiment of the invention, the thermal insulation has a fastening clip for attachment to the outer insulation element and for fixing the outer insulation element to the rail. In this case, the mounting clamp is designed and adapted to the outer profile of the Außendämmelements that it is attachable in a biased state of the outer insulation element. Due to the bias of the mounting clamp, the Außenendämmelement can be fixed when attaching it together with the attached mounting clamp to the rail, by means of a snapping the mounting clamp on the rail to the rail.

Due to the special design of the mounting clamp is advantageously achieved that the mechanical strength and stability is further increased.

In a preferred embodiment of the embodiment of the invention described above, the outer insulation element on the end face of its supernatant over the rail foot on a groove for locking the mounting clamp in the

Außendämmelement. This will advantageously a precise pre-assembly of

Fixing clamp on the outer insulation element, before attaching the

Außendämmelementes to the rail, easier.

The outer insulation element preferably has drainage holes on its underside.

In a further preferred embodiment of the invention, the

Außenendämmelement in its longitudinal profile on its underside both sides

Recesses on.

In this embodiment, it is advantageously possible for the outer insulation element to cover the largest possible area longest of the railroad track. In this embodiment, the outer damming element preferably has, in its longitudinal profile in the middle and upper regions, a length with which, in the installed state, it projects above a threshold of the railroad track and close to the rail fastening

zoom ranges. As a result, the stability and the thermal insulation property are further increased.

Preferably, the outer insulation element has on its underside a length corresponding to a distance between two railway sleepers.

Furthermore, according to one embodiment of the invention, the inner insulation element is designed such that it has an adapted to the rail track and to the outer insulation element cross-sectional profile. In this case, the inner insulation element preferably has a shape adapted to the rail track and to the outer insulation element

Cross - sectional profile that the inner insulation element in the assembled state of

Thermal insulation the rail track, on one side of the rail track, from a region of the top of the rail foot, over the area of the rail web away, up to a portion of the region of the rail head, enclosing a form fit.

An advantage of this preferred embodiment of the invention is that, in particular due to the positive connection, the stability of the construction in the mounted state is increased even further. In a further advantageous embodiment of the invention, the inner insulation element in its cross-sectional profile on the side facing away from the rail track in the assembled state of thermal insulation, a recess into which the Außendämmelement is einpassbar, so that in the assembled state, the Außenendämmelement and Innenendämmelement positively connected to each other. As a result, the assembly is further facilitated further and the stability is increased even more, in particular since an enlarged contact surface between the inner insulating element and the outer insulating element is provided due to the positive connection. Furthermore, the risk of a possible loss of the

Innendämmelementes further reduced or excluded.

Preferably, the thermal insulation of the invention has several

Innendämmelemente, which are arranged in the assembled state over the entire heated rail length lined up.

In particular, in an advantageous embodiment of the invention, the

Inner insulation elements latched together. Particularly preferably, the inner insulation elements are latched together over the entire heated

Rail length arranged in a row.

,

In one embodiment of this advantageous embodiment of the invention, an inner damping element has a trapezoidal connection at one end. Further preferably, an inner damping element has at its other end a trapezoidal recess in the shape of the nozzle. Particularly preferred

According to the invention, a combined inner insulation element is provided which has a trapezoidal connection piece at one end and the trapezoidal recess in the shape of the connection piece at its other end.

As a result, a simple pre-assembly of the elements is possible and achieves a particularly high stability.

According to one embodiment of the invention, the inventive

Thermal insulation designed for use with stock rails of

Railway points. In particular, the shapes or the cross-sectional profiles of the inner dam element and the outer dam element are adapted to this effect. The outer insulation element and / or the inner insulation element is preferably formed from a heat-insulating material, in particular from polypropylene. However, the invention is not limited to the use of polypropylene. Instead, other materials that allow high stability and good

Thermal insulation is achieved, used.

Preferably, the outer insulation element is integrally formed.

Furthermore, a railway rail is provided, which with the

thermal insulation according to the invention is provided.

For the purpose of mounting the insulation elements, the inner and / or outer insulation element are preferably provided with additional recesses. The heating element of a rail heater may be mounted on the same side as the thermal insulation, or on the opposite side of the rail.

The thermal insulation according to the invention can advantageously be attached to the rail in a simple manner, For this purpose, a prefabricated Außenendämmelement be provided with a mounting clamp, wherein the clamp in the on the

Outside insulation element patch condition has a mechanical bias. Furthermore, at least one inner insulation element is applied to the railroad track at its web area, and the clamped Außenendämmelement is pushed onto the rail, wherein a suitable Außendämmelement is used, that in the pushed state, the rail at least on a side rail foot and the inner insulating element positively. The clamp can then because of the mechanical bias on the other side of the

Snapping the rail foot so that the outer insulation element and thereby also the inner insulation element are fixed to the rail. The thermal insulation according to the invention is particularly suitable for keeping cold wind from the rail, so as to maximize the possible temperature difference between the outside temperature, which is often far below zero degrees Celsius in winter, and the rail temperature. It is provided a thermal insulation, by means of which advantageously contradictory requirements are met. More precisely, it will become one

Heat insulation device provided, in which on the one hand a good Thermal insulation is ensured due to a low thermal conductivity. Furthermore, a good mechanical strength and stability is given, which is especially necessary for high-speed lines. In addition, a simple manner of attachment is provided, whereby a simple maintenance is ensured especially in case of disturbances on the heating elements. This is particularly due to the modular design of the invention

Thermal insulation achieved where prefabricated parts are used.

As will be readily apparent to one skilled in the art, the embodiments and embodiments of the invention set forth above may be appropriately combined.

In the following an embodiment of the invention will be explained in more detail with reference to the accompanying figures. 1 shows a cross-sectional view of an outer dam element of a

Embodiment of the invention in a state mounted on the rail,

FIG. 2 shows a side view of the outer dam element according to the invention according to the exemplary embodiment shown in FIG. 1, FIG.

FIG. 3 is a plan view of the outer dam member of the invention shown in FIG. 2; FIG.

4 shows a perspective view of the outer dam element according to the invention, shown in FIG. 2,

5 shows a cross-sectional view of the inner dam element according to the invention in the rail-mounted state, according to the exemplary embodiment of the invention, FIG. 6 shows a side view of the inner dam element according to the invention according to the exemplary embodiment from FIGS. 1 and 5,

7 shows a perspective view of the inner lining element according to the invention, shown in FIG. 6,

8 is a perspective view of the thermal insulation according to the invention in the assembled state according to the embodiment of the invention, Fig. 9 is a side view of the thermal insulation according to the invention in the assembled state according to the embodiment of the invention, Fig. 10 is a perspective view of the Innendämmelemente in the assembled state according to the embodiment of the invention, and

Fig. 1 1 cross-sectional views of the railroad track and the thermal insulation according to the invention during various steps of mounting the thermal insulation.

In the following detailed description, like reference numerals are used for like components throughout the several figures. It will be

Components that have already been explained in previous figures, not explained again to avoid repetition.

In Fig. 1, an outer insulation element 101 of the thermal insulation according to the invention is shown in cross-sectional view in a mounted state on the rail 102. The rail 102 has a rail head 107, a rail web 103 and a rail foot 104. The outer insulation element 101 has in its cross-section a recess which receives a lateral end region 105 of the rail foot 104. The lower part 106 of the Außendämmelements 101 extends below the

Rail foot 104. The outer insulation element 101 has on its lateral part a projection 108 which extends with respect to the rail web 103 with a distance 109 to the rail web 103. The distance is intended for that there

Innendämmelement (not shown in Fig. 1, see below instead) is arranged. On its lateral end face 1 10, the outer insulation element 101 has a groove 11 1, which is provided for receiving a fastening clip (not shown here). As can be seen from FIG. 1, the lateral end region 105 of the rail foot 104 is enclosed by the outer insulation element 101 in a form-fitting manner. It can also be seen from FIG. 1 that the lower part 106 of the outer dam element 101 extends under the rail foot 104 in such a way that the rail foot 104 extends from the rail foot 104

External insulation element 101 is positively included, i. the outer insulation element 101 can be held by means of the fastening clip (not shown) with its lower part 106 on the rail 102. The outer insulation element 101 has on the upper side of its lower part 106, which upper side facing the rail foot 104, a recess 112 which is for collecting and draining of

Meltwater is used. In Fig. 2, the Außenendämmelement 101 according to the embodiment of the invention is shown in side view. The outer insulation element has such a longitudinal profile that its lower part 106 is shorter in comparison to its upper part or the projection 108. In other words, the outer insulation element 101 has recesses 201 in its longitudinal profile. According to FIG. 2, this is

Außenendämmelement 101 symmetrically designed in its longitudinal profile. The length of the lower part 106 is selected according to this embodiment such that the outer insulation element 101 has on its underside 202 a length which corresponds to a distance between two sleepers (not shown here) of the railroad rail 102.

According to the embodiment of the invention, the outer insulation element 101 is in one piece and made of a heat-insulating material, preferably made of

Polypropylene, manufactured.

In Fig. 3 is a plan view of the Außendämmelements 101 is shown. As shown in FIG. 3, the lower part 106 of the outer dam member 101 has a series of drainage holes 301 for draining melt water.

4, the outer insulation element 101 is shown according to the embodiment of the invention in a perspective view. FIG. 4 shows the lower part 106, the overhang 108, the groove 111, the drainage holes 301 and other components and aspects of the outer dam element 101, which are also explained in greater detail in FIGS. 1 to 3.

FIG. 5 is a cross-sectional view of an inner dam element 501 of FIG

Embodiment of the thermal insulation according to the invention shown in mounted on the rail 102 state. According to the embodiment, this has

Inner insulation element 501 adapted to the rail track 102

Cross-sectional profile and encloses the rail 102, on a side 503 of the rail 102, from a region on an upper side 504 of the rail foot 104, over the region of the rail web 103, to a region on an underside 505 of the rail head 107, in a form-fitting manner , As shown in FIG. 5, the inner insulation element 501 has a recess 502 in its cross-sectional profile, so that the cross-section of the inner insulation element 501 corresponds to the cross-section of the outer insulation element 101 shown in FIGS Cross-section of the supernatant 108 of the Außenendämmelements 101 is adjusted. It is thus achieved that the outer insulation element 101 and the inner insulation element 501 connect to one another in a form-fitting manner. Such a construction on the one hand a simple installation, on the other hand achieved a high stability.

As shown in FIG. 6, the innerliner 501 according to the

Embodiment at one end 601 a trapezoidal nozzle 602 and at its other end 603 a trapezoidal recess 604 in the form of the nozzle. This allows a secure latching of several juxtaposed similar Innenendämmelementen 501 in a simple manner.

In Fig. 7, the Innendämmelement 501 shown in Figs. 5 and 6 is shown in a perspective view. In Fig. 8 is a perspective view of the thermal insulation 100 of the invention according to the embodiment shown in the assembled state. In FIG. 8, both the rail 102, on which the thermal insulation 100 is mounted, and, for example, two rail sleepers 801 and rail fastenings 802 are shown. In Fig. 9, two juxtaposed Innendämmelemente 501 can be seen. The Innenendämmelemente 501 are in accordance with the assembly of

Thermal insulation of Außenendämmelementen 101 held on the rail. The elements 101, 501 of the thermal insulation 100 are fixed to the rail 102 with clamps or fastening clamps 803. According to the invention, both the Innendämmelemente 501 and the

External insulation elements 101 contribute to thermal insulation. Thus, in particular, cold wind is prevented from the rail 102 by means of the outer insulation elements 101. This applies in particular also to the exemplary embodiment of the invention discussed here. In Fig. 9 is a perspective view of the embodiment of

insulation 100 according to the invention is shown in the assembled state. As shown in FIG. 9, the outer damping elements extend with their end surfaces 901, as it were, up to the mounting brackets 902 of the rail fastening 802, so that the cover of the rail 102 with the inner insulation elements 501 and the

Außenendämmelementen 101 is maximized. In Fig. 10 is a perspective view of the Innendämmelemente 501 shown in the assembled state. According to the embodiment of the invention, the Innenendämmelemente 501, as shown in Fig. 10, by means of the trapezoidal mounting stub 602 verklinkt together lined up, arranged adjacent to the rail.

In Fig. 11 is shown how the thermal insulation (100) according to the embodiment can be mounted. For installation, the outer insulation element 101 according to the invention is provided with a fastening clip 803 placed thereon. The

Fixing clamp 803 has at one end a bent portion 1101 which is adapted to engage in the groove 111 at the end face of the protrusion 108. The fastening clip 803 is preassembled on the outer insulating member 101 of the thermal insulation 100 outside the rail system, with the bent portion 1101 of the fastening clip 803 being inserted into the groove 111 serving as the guide groove for the fastening clip 803. By the force of the springback, the fixing bracket 803 is fixed to a side end surface 1102 of the lower part 106 of the outer dam member 101. The

Außenendämmelement 101 with the ^' mounting clamp 803 is up to

Collision with the inner insulation element 501 purely as indicated by the arrow 1103 in Figure 11. For the final fixing of the thermal insulation 100 on the rail 102, the fastening clip 803, as indicated by the arrows 1104, strongly pressed in, so that the fastening clip 803 snaps, see the arrow 1105th

LIST OF REFERENCE NUMBERS

100 thermal insulation

101 outer insulation element

102 railway track

103 rail bridge

104 rail foot

105 lateral end region of the rail foot

106 lower part of the Außendämmelements

107 rail head

108 upper part of the Außendämmelements

109 Distance between outer insulation element and rail web

110 lateral end face of the Außendämmelements

111 groove

201 recess

202 Bottom of the outer dam element

301 drainage holes

501 internal insulation element

502 recess

503 side of the rail

504 top of the rail foot

505 underside of the rail head

601 End of the interior dam

602 nozzles

603 End of the interior dam

604 recess

801 railroad tie

802 rail fastening

803 mounting clamp

901 End face of the outer dam element

902 Mounting bracket for railway track

1101 bent portion of the mounting clamp

1102 Side surface of the outer dam element

1103 Reinfügevorgang when mounting the Außenendämmelements 1104 Reindrückvorgang when attaching the mounting clamp

1105 Snapping the mounting clamp

Claims

claims

1. Thermal insulation (100) for railroad tracks (102), comprising

at least one inner insulation element (501) and at least one

External insulation element (101), which are shaped to be mounted parallel to each other on a railway rail (102), so that in the mounted state

the outer insulation element (101) positively surrounds the rail foot (104) at a lateral end region (105) of the rail foot (104) and extends with an upper part (108) longitudinally along the railway rail (102) opposite the rail web (103) Distance (109) to the rail web (103), and with a lower part (106) extends to the underside of the rail (102), and

the inner insulation element (501) is arranged in the region of the distance (109) between the outer insulation element (101) and the rail web (103) and is held on the rail strand (102) by means of the outer insulation element (101).

2. Thermal insulation (100) according to claim 1, further comprising at least one

A mounting clamp (803) adapted to be attached to the outer damming element (101) and to fix the outer damming element (101) to the rail (102), wherein the mounting clamp (803) is shaped and mated to the outer profile of the

Außenendämmelements (101) is adapted to be attached to the outer insulation element (101) in a prestressed state, so that when mounting the

Außenendämmelements (101), the Außenendämmelement (101) on the rail by means of a snapping (1 105) of the fastening clip (803) on the rail foot (104) can be fixed.

3. A thermal insulation (100) according to claim 2, wherein the upper part (108) of the Außenendämmelements (101) is formed as a projection on the rail foot (104) having an end face (1 10) on which a groove (1 1 1) for locking the

Fixing clamp (803) in the outer insulation element (101) is provided.

4. Thermal insulation (100) according to one of the preceding claims, wherein the outer insulation element (101) on its underside drainage holes (301).

5. Heat insulation (100) according to any one of the preceding claims, wherein the outer insulation element (101) in its longitudinal profile on its underside on both sides in each case a recess (201).

6. Thermal insulation (100) according to one of the preceding claims, wherein the outer insulation element (101) has on its underside a length corresponding to a distance between two railway sleepers (801).

7. Thermal insulation (100) according to any one of the preceding claims, wherein the Innendämmelement (501) to the railroad track (102) and to the

Outer insulation element (101) has adapted cross-sectional profile,

wherein the inner insulation element (501) in the assembled state of the

Thermal insulation (100) from one side of the railroad rail (102) is positively enclosed, wherein the Innendämmelement (501) of a portion of the top (504) of the rail foot (104), over the region of the rail web (103) away, to a region (505) of the rail head (107), at the

Railway rail (102) is applied.

8. Thermal insulation (100) according to any one of the preceding claims, wherein the Innenendämmelement (501) on its in the mounted state of the thermal insulation (100) of the rail track (102) facing away from a recess (502) into which the Außenendämmelement (101) can be fitted is

so that in the mounted state, the outer insulation element (101) and the

Innendämmelement (501) are positively connected with each other.

9. Thermal insulation (100) according to any one of the preceding claims, comprising a plurality of Innendämmelemente (501) according to the preceding

Claims that are verklinkbar with each other.

10. The thermal insulation (100) according to claim 8, wherein the inner insulation element (501) has at one end (601) a trapezoidal connection (602) and at its other end (603) a trapezoidal recess (604) in the form of the connecting piece (602). having.

11. Thermal insulation (100) according to one of the preceding claims, designed for use for stock rails of railway turnouts.

12. Thermal insulation (100) according to one of the preceding claims, wherein the outer insulation element (101) and / or the inner insulation element (502) are each formed from a heat-insulating material, in particular polypropylene.

13. Thermal insulation (100) according to any one of the preceding claims, wherein the outer insulation element (101) is integrally formed.

14. Railway rail (02) provided with the thermal insulation (100) according to one of the preceding claims.

15. Außendämmelement (101) of a thermal insulation (100) for railroad tracks (102), shaped such that it in the assembled state, the rail foot (104) at a lateral end portion (105) of the rail foot (104) positively includes and with an upper part (108) extends longitudinally along the rail (102) opposite the rail web (103), at a distance (109) from the rail web (103), and at a lower part (106) at the bottom of the rail (102),

such that the outer insulation element is configured to be mountable to the rail by performing the following steps:

Providing the outer dam element (101) with a clamp (803), wherein the clamp (803) has a mechanical prestress in the state placed on the outer damper element (101),

Pushing the outer dam element (101) provided with the clamp (803) onto the rail (102), so that the outer insulation element (101) positively encloses the rail (102) on the side rail foot region (105),

Snapping (1105) the clamp (803) using the mechanical bias of the clamp (803) over the other side of the rail foot (104) such that the outer damper (101) is fixed to the rail (102),

the outer damming element (101) being further adapted to be in

mounted state to the railroad track (102) in their web area fitting Innenendämmelement (501) to the railroad track (102) to keep.