U.S. patent application number 12/988720 was filed with the patent office on 2011-02-17 for solid track having continuous bedding.
This patent application is currently assigned to MAX BOGL BAUUNTERNEHMUNG GMBH & CO. KG. Invention is credited to Stefan Bogl, Erich Lindner.
Application Number | 20110036917 12/988720 |
Document ID | / |
Family ID | 40823252 |
Filed Date | 2011-02-17 |
United States Patent
Application |
20110036917 |
Kind Code |
A1 |
Bogl; Stefan ; et
al. |
February 17, 2011 |
SOLID TRACK HAVING CONTINUOUS BEDDING
Abstract
The invention relates to a solid trackway (1) for rail vehicles
having a substantially continuous bedding of the rails (2) on a
concrete slab (3), wherein the rail (2) is supported with the foot
thereof on an elastic intermediate layer (7). The solid trackway
(1) further comprises a side guide piece (8) supporting and guiding
the rail (2) in the horizontal direction. The rail (2) is mounted
on the concrete slab (3) at discrete mounting points (9) by means
of a mounting means (12). Only the elastic intermediate layer (7)
is disposed between the rail (2) and the concrete slab (3).
Inventors: |
Bogl; Stefan; (Sengenthal,
DE) ; Lindner; Erich; (Auerbach-Nasnitz, DE) |
Correspondence
Address: |
DORITY & MANNING, P.A.
POST OFFICE BOX 1449
GREENVILLE
SC
29602-1449
US
|
Assignee: |
MAX BOGL BAUUNTERNEHMUNG GMBH &
CO. KG
SENGENTHAL
DE
|
Family ID: |
40823252 |
Appl. No.: |
12/988720 |
Filed: |
March 26, 2009 |
PCT Filed: |
March 26, 2009 |
PCT NO: |
PCT/EP2009/053554 |
371 Date: |
October 20, 2010 |
Current U.S.
Class: |
238/7 |
Current CPC
Class: |
E01B 1/002 20130101;
E01B 9/02 20130101 |
Class at
Publication: |
238/7 |
International
Class: |
E01B 1/00 20060101
E01B001/00 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 21, 2008 |
DE |
10 2008 001 293.9 |
Claims
1. Solid trackway (1) for rail-guided vehicles with a mostly
continuous bedding of the rails (2) on a concrete slab (3), in
which case the rail (2) is supported on an elastic intermediate
layer (7) with its foot and with a lateral guiding piece (8) of the
rail (2), which supports and guides the rail in horizontal
direction, characterized in that the rail (2) is mounted to the
concrete slab (3) on discrete attachment points (9) with a mounting
means (12) and only the elastic intermediate layer (7) is arranged
between the rail (2) and the concrete slab (3).
2-21. (canceled)
Description
[0001] The invention refers to a solid trackway for rail-guided
vehicles with mostly continuous bedding of rails on a concrete
slab. The rail is supported on an elastic intermediate layer with
its foot. Furthermore, the solid trackway includes a lateral
rail-guiding piece so that the latter can support and guide the
rail in horizontal direction.
[0002] A solid trackway with a continuous bedding of rails is known
from WO 03/016629 A1, in which an elastic foundation is intended to
be located below the rail foot. Here, the rail mounting is
continuous by pouring out the trough with a solidifying mass. In
order to manufacture such a solid trackway quickly, chamber filling
bricks--fixed in the corresponding trough recesses--are arranged
sideways beside the rail stems. For the temporary correct position
fixation of the rail and the chamber filling bricks in the trough,
an adjusting device has been foreseen. For mounting the rail, an
intermediate space between the chamber filling bricks and the
trough walls is filled with a grout.
[0003] DE 195 19 745 C2 also describes a ballastless track
superstructure with a continuous elastic bedding of the rails. The
rails are also mounted continuously by bracing the rail in the
receiving troughs through guiding girders. Elastic molded bodies
are arranged between rail foot and guiding guiders. The joints
between the guiding girders and trough walls are filled with an
elastic grout so that the rails are also lodged continuously and
elastically in the horizontal direction and are almost completely
embedded.
[0004] The task of the present invention is to suggest a solid
trackway for rail-guided vehicles with high riding comfort and
favorable wear and tear that is economical to manufacture.
[0005] The task is solved with the characteristics of claim 1.
[0006] A solid trackway for rail-guided vehicles comprises a
largely continuous bedding of rails on a concrete slab. The rail is
supported on an elastic intermediate layer with its foot.
Furthermore, the solid trackway includes a lateral guiding piece
for the rail for supporting and guiding it in horizontal direction.
According to the invention, the rail is fixed in place on the
concrete slab on discrete mounting points with a mounting means.
Between the rail and the concrete slab only the elastic
intermediate layer is arranged, so that the rail is placed on the
concrete slab only by means of the elastic intermediate layer,
without the interposition of a load-distributing slab. The fact
that the rails are fixed in place merely on discrete mounting
points makes it possible to manufacture and mount the rail
economically. A temporary mounting of the rail is not necessary
because the rail in horizontal direction can be adjusted to its
proper position by the guiding pieces. In spite of the discrete
mounting and lateral guidance, the continuous bedding prevents an
undesired tilting caused by forces acting horizontally. Thus, the
solid trackway according to the invention can combine the
advantages of the continuous rail bedding--especially with regard
to sound emissions and wear and tear--with a simple manufacturing
process.
[0007] It is advantageous for the rail to have a rail head, a stem
and a rail foot. The guiding piece supports the rail merely on its
foot. A corresponding guiding piece can be easily arranged in the
area of the rail mounting.
[0008] It is also advantageous for the concrete slab to have a
groove so the mounting means can be supported in operating
position. The mounting means can thus be directly supported on the
concrete slab. Intermediate steel or plastic slabs such as the
typical state-of-the-art mountings used in individual supporting
points are therefore not needed, thus simplifying the structure of
the solid trackway according to the invention.
[0009] It is especially advantageous for the concrete slab to have
another groove in which the mounting means is supported in mounting
position. The mounting means, which should preferably be designed
as a tension clamp, can thus already be mounted in
pre-manufacturing. In this case, it is fixed in mounting position
first to allow the insertion of the rail on the work site.
[0010] The rail is preferably arranged in a trough-like recess of
the concrete slab. For this purpose, the concrete slab can have
projections extending between two predetermined breaking points of
the slab to achieve a largely continuous bedding of the rail.
[0011] A further development of the invention foresees the lateral
guiding piece of the rail to be discontinuously supported in
horizontal direction on its foot. As a result of this, the guiding
pieces can be easily arranged in the area of the rail mountings and
fixed in place with them.
[0012] According to another further design of the invention, the
lateral guiding piece supports the rail in horizontal direction,
mostly continuously. Here, it is particularly advantageous for the
length of the guiding piece to be roughly equal to the distance
from the predetermined breaking points of the slab. As a result of
this, a mostly continuous support can be achieved in horizontal
direction that is only interrupted in the area of the predetermined
breaking points. If the rail breaks, the continuous lateral support
can counteract against the rail from slipping.
[0013] It is also advantageous if a guiding piece is arranged on
each side if the rail, in which case the rail is guided vertically
between both guiding pieces. While the train runs through, the rail
can move vertically without having to change the track layout as a
result of this.
[0014] It is advantageous for the guiding piece to be made of
plastic, especially of glass fiber reinforced plastic. Likewise, it
is also possible to make the guiding piece of concrete. The
rigidity of these materials can achieve a reliable horizontal
support and guidance of the rails.
[0015] Furthermore, it is especially advantageous for the guiding
piece to be arranged on the lateral trough wall of the trough-like
recess. The guiding piece can be securely supported on the lateral
trough walls, hereby guiding the rail exactly.
[0016] According to an invention design, the guiding piece is fixed
in place by the mounting means in the longitudinal direction of the
rail. Because of this, special measures for mounting the guiding
pieces are not needed, greatly simplifying the assembly of the
solid trackway. Preferably, the guiding pieces have a notch near
the rail mounting, in which the mounting means or the tension clamp
can engage in a positive fit in longitudinal direction.
[0017] According to another further design, the guiding piece is
cast in the concrete of the slab. As a result of this, the guiding
piece is securely attached to the solid trackway and no more
time-consuming assembly work is needed. In this case, the guiding
piece can have projections, an undercut or recesses so it can
attach to or grip the concrete of the slab,
[0018] Another further advantageous design of the invention allows
the elastic intermediate layer and/or the guiding piece to be
attached to the concrete slab in a form-fitting manner. In this
way, the guiding piece or the elastic intermediate layer can have
projections or undercuts to make the positive fit attachment
possible. These can, in turn, act together with projections, edges
or undercuts of the concrete slab or one of them on the humps
arranged on it.
[0019] If the guiding piece is largely U-shaped, it can, for
example, wrap around the concrete slab hump in a positive fit and
hereby be fixed in place.
[0020] According to another invention design, it is advantageous
for the elastic intermediate layer and/or the guiding piece to
engage in the predetermined breaking points of the slab. This can
also achieve a positive fit attachment of the guiding piece to the
concrete slab.
[0021] Besides, it is advantageous for the elastic intermediate
layer and/or the guiding piece to be a machined part, which can,
for example, be a cast part or a glass fiber reinforced plastic
part manufactured in a certain shape. An economical manufacturing
of the guiding piece in larger quantities is hereby possible.
[0022] According to an advantageous further design of the
invention, the elastic intermediate layer encompasses an adjusting
slab for adjusting the height of the rail, As a result of this, the
rail height can be easily adjusted on the worksite.
[0023] The slab is advantageously made of prefabricated concrete
slabs or of concrete ties cast in in-situ concrete.
[0024] Further advantages of the invention are described with the
help of the following embodiment drawings, which show:
[0025] FIG. 1 A diagrammatic drawing of a solid trackway according
to the invention with a concrete slab and a largely continuous
bedding of rails on the concrete slab.
[0026] FIG. 2 A perspective drawing of a solid trackway according
to the invention.
[0027] FIG. 3 A perspective drawing of an alternate execution of a
solid trackway according to the invention.
[0028] FIG. 4 A diagrammatic drawing of a solid trackway and of a
guiding piece that is attached in a positive fit to the concrete
slab.
[0029] FIG. 5 A diagrammatic drawing of a solid trackway and of an
elastic intermediate layer for a solid trackway, in which case the
elastic intermediate layer is form-fittingly attached to the
concrete slab.
[0030] FIG. 6 Another execution of an elastic intermediate layer or
of a guiding piece that is form-fittingly attachable to the
concrete slab.
[0031] FIG. 7 A schematic diagram of a guiding piece according to
the invention that engages in a predetermined breaking point of the
slab.
[0032] FIG. 1 shows a solid trackway 1 for rail-guided vehicles in
which the rails 2 are largely continuously bedded on a concrete
slab 3. For bedding and mounting the rails 2, the concrete slab 3
has humps 4 or similar elevations in which the rail 2 is arranged.
For this purpose, a trough-like recess 5 has been incorporated into
the concrete slab 3 or the humps 4. The humps 4 or trough-like
recesses 5 extend preferably along the entire concrete slab 3 so
that a largely continuous bedding of the rails 2 results, but is
interrupted in the area of the predetermined breaking points 6 of
the slab 3.
[0033] Here, only a section of a concrete slab 3 is shown. To build
such a solid trackway on the worksite, the concrete slabs 3 are
prefabricated, placed underground and firmly attached to one
another. In this case, the concrete slabs 3 with the rails 2 can be
prefabricated with utmost precision so adjusting work on the tracks
is no longer necessary on site: The rails 2 are laid in the
trough-like recesses 5 under interposition of an elastic
intermediate layer 7 (see FIG. 2) to ensure the needed elasticity.
For the lateral orientation and guidance of the rail 2, guiding
pieces 8 are intended for supporting the rails 2 in horizontal
direction.
[0034] The invention now foresees the rail 2 to be fixed in place
on the concrete slab 3 along discrete mounting points 9 with a
mounting means 12, preferably a tension clamp. This makes a
time-consuming grouting of the trough-like recess 5 for the
continuous fastening of the rails 2 unnecessary. Nonetheless,
unacceptable deflections of the rail head can be prevented by the
continuous bedding of the rails 2. A load-distribution slab typical
of individual mountings as in the state of the art is not needed
here, thus simplifying the building of the rail.
[0035] As can also be seen in FIG. 2, the rail 2 is supported
through the guiding piece 8 merely on its foot 10, allowing a rail
mounting 9 with a mounting means 12. Here, the guiding piece 8 has
a recess 11 in the area of the mounting points 9 so that the rail
can be mounted with tension clamps in a known way. A supporting
surface 13 of the guiding piece 8 is nonetheless developed along
the entire length of the guiding piece 8, since the support takes
place only in the area of the rail foot 10.
[0036] According to the drawing of FIG. 2, the lateral guiding
piece 8 has been designed in such a way that it largely supports
the rail 2 continuously in horizontal direction. In this case, the
guiding piece 8 is largely developed so long that it equals the
distance of two predetermined breaking points 6 of the slab 3 or is
about the width of the humps 4. Thanks to such designed guiding
pieces 8, a mostly continuous lateral guidance of the rails 2 can
be achieved in spite of the distance of the discrete mounting
points 9. In this case, a guiding piece 8 has been arranged on each
side of the rail 2 so that the rail 2 is led in a vertical
direction between both guiding pieces 8. When something is driven
on the rails 2, a vertical movement of the rail 2 is made possible
without hereby having to change the position of the rail 2,
[0037] In the example shown, the trough-like recess 5 has been
designed largely in the form of a rectangular groove and the
guiding piece 8 is arranged on the lateral trough wall 14 of the
trough-like recess 5. Here, the guiding piece 8 can brace itself
against lateral trough wall 14. In the drawing shown, the rail 2
has been placed on an elastic intermediate layer 7 between two
guiding pieces 8 in the trough-like recess 5. As a result of this,
the rail 2 can be very precisely positioned in the trough-like
recess 5 and guided during operation.
[0038] So the concrete slab 3 can be manufactured as precisely as
possible, the trough-like recess 5 can be ground so it can be
manufactured with very narrow tolerances. In this case, the groove
or trough-like recess 5 can be incorporated accurately to size
already in the prefabricated factory in accordance with the rail
tracks. However, it is also possible to grind the groove to exact
dimensions after assembling the slabs 3 on site. The embodiment of
the guiding pieces 8 according to the invention also allows
adjusting the position of the rail 2 with the help of the guiding
pieces 8. To do this, guiding pieces 8 with different strengths can
be manufactured, for example, to influence the position of the rail
2, hereby allowing a lateral correction of the rail 2 of up to 8
mm.
[0039] The guiding pieces 8 can be made as molded parts because
this would allow an economical production in series of the guiding
pieces 8. An especially economical design of the guiding pieces 8
foresees the guiding pieces 8 to be made of a glass fiber
reinforced plastic, which would give the guiding pieces 8 the
sufficient stiffness for firmly supporting the rail in horizontal
direction. It is also likewise possible to make the lateral guiding
pieces 8 of special concrete, which would also allow a solid
support of the rail 2 in horizontal direction. A guiding piece 8
made of a graphite material is also conceivable, however.
[0040] Another embodiment of a solid trackway 1 with a guiding
piece 8 is shown in the perspective drawing of FIG. 3. The humps 4
of the concrete slab 2 are in this case somewhat narrower than
those shown in FIG. 1, which allows for a better drainage of the
rails 2 through the predetermined breaking points 6. The rail 2 is
mostly continuously supported an its rail foot, as also shown in
FIG. 2, so that no load distribution slab is needed here as well.
The rail foot has been directly placed on the elastic intermediate
layer 7. In the example shown here, the elastic intermediate layer
also encompasses another adjusting slab 17 that allows a height
compensation of the rails 2. In horizontal direction, on the other
hand, the rail 2 is discontinuously supported by the guiding pieces
8. The guiding pieces 8 have for this purpose a supporting surface
13 in the area of the rail mounting 9. As in the example of FIG. 2,
two supporting surfaces 13 or two guiding pieces 8 are foreseen
here to support the rail 2 in horizontal direction and allowing a
vertical movement of the rail 2,
[0041] As can also be seen in FIG. 2, the concrete slab 3 or the
humps 4 have a groove 15 in which the mounting means 12 is
supported in operating position. The structure of the fixed
trackway is further simplified by the direct support of the
mounting means on the concrete slab, as no additional steel or
plastic slabs are needed. In this drawing, the concrete slab 3 has
another groove in which the mounting means 12 finds support in
assembled position. The solid trackway can thus be pre-assembled
with the mounting means 12 in the prefabricated parts factory. The
assembly of the rails 2 on site can nevertheless take place
unhindered. Afterwards, the tension clamps for mounting the rails 2
in place must only be moved and mounted to the operating position.
The tension clamps shown have an elongated hole for this
purpose.
[0042] To achieve a secure mounting of the guiding pieces 8 on the
concrete slab 3, it is useful for the guiding piece 8 to be
form-fittingly attached to the concrete slab 3. For this purpose,
the guiding piece 8 can be largely U-shaped (as shown in FIG. 4) so
it can wrap around the hump 4 of the slab 3, hereby being securely
held in place in the longitudinal direction of the rail 2.
[0043] Similarly, the guiding piece 8 can also be executed to
engage in the predetermined breaking points 6 of the slab 3, hereby
attaching itself to it in a positive fit (FIG. 7).
[0044] It is also advantageous for the elastic intermediate layer 7
to be form-fittingly attached to the concrete slab 3. The latter
can also be U-shaped as the guiding piece 8 shown in FIG. 7 and
engage with the sides of the "U" into the predetermined breaking
point 6 of the slab.
[0045] Another favorable connection of the guiding piece 8 and/or
the elastic intermediate layer 7 with the slab 3 arises if they are
cast in the concrete of the slab 3. This is another way of securely
attaching the guiding piece 8 and the intermediate layer 7 to the
slab 3. Such designs of a guiding piece 8 or of an elastic
intermediate layer 7 have been schematically shown in FIGS. 5 and
6. Thus, the parts mentioned above can have projections 16, for
example, with which they can be positively attached to the concrete
slab 3. The projections 16 can then be cast into the concrete of
slab 3, in which case, each one of the projections 16 can be
arranged on the ends of the guiding pieces 8 or the intermediate
layer 7 in the area of the predetermined breaking points 6 or also
centrically, as shown in FIG. 6. Naturally, both the guiding piece
8 and the intermediate layer 7 can have many recesses and/or
projections 16 that can be cast in the concrete of the slab 3.
Instead of casting, however, it is also possible for the concrete
slab 3 or the hump 4 to have the corresponding recesses or
projections too, which act together with the recesses or
projections 16 of the parts mentioned above.
[0046] The invention is not restricted to the embodiments shown;
alterations and combinations within the framework of the patent
claims also fall under the invention
* * * * *