U.S. patent application number 13/381990 was filed with the patent office on 2012-05-10 for brake carrier for the bogies of rail vehicles.
Invention is credited to Anton Diemling, Karl Drobesch, Markus Hubmann, Christian Kuter, Christian Madritsch, Armin Schank, Gerald Schobegger, Florian Semrad, Martin Teichmann.
Application Number | 20120111675 13/381990 |
Document ID | / |
Family ID | 43303842 |
Filed Date | 2012-05-10 |
United States Patent
Application |
20120111675 |
Kind Code |
A1 |
Diemling; Anton ; et
al. |
May 10, 2012 |
Brake Carrier For The Bogies Of Rail Vehicles
Abstract
A brake carrier for bogies of rail vehicles has an open
cross-section with flexible torsion. A connection to two
longitudinal members of the bogie is designed as a rigid
non-articulated connection and a braking device is fixed to the
brake carrier in such a way that a line of action of braking forces
runs through the shear centre that lies outside the cross-section
of the brake carrier.
Inventors: |
Diemling; Anton; (Lannach,
AT) ; Drobesch; Karl; (Pischeldorf, AT) ;
Hubmann; Markus; (Brodingberg, AT) ; Kuter;
Christian; (Stattegg, AT) ; Madritsch; Christian;
(Graz, AT) ; Schank; Armin; (Graz, AT) ;
Schobegger; Gerald; (Graz, AT) ; Semrad; Florian;
(Graz, AT) ; Teichmann; Martin; (Graz,
AT) |
Family ID: |
43303842 |
Appl. No.: |
13/381990 |
Filed: |
July 6, 2010 |
PCT Filed: |
July 6, 2010 |
PCT NO: |
PCT/EP2010/059620 |
371 Date: |
January 3, 2012 |
Current U.S.
Class: |
188/233.7 ;
188/219.1 |
Current CPC
Class: |
B61F 5/32 20130101; F16D
2055/0008 20130101; F16D 55/2245 20130101; B61H 5/00 20130101 |
Class at
Publication: |
188/233.7 ;
188/219.1 |
International
Class: |
B61H 13/36 20060101
B61H013/36; B61H 13/34 20060101 B61H013/34 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 16, 2009 |
AT |
A 1122/2009 |
Claims
1.-5. (canceled)
6. A brake carrier for undercarriage frames of rail vehicles,
wherein the brake carrier has a torsionally soft, open
cross-section, wherein an attachment to two longitudinal members of
an undercarriage frame is a rigid, non-articulated connection, and
wherein a braking mechanism is secured to the brake carrier such
that a line of action of braking forces runs through a shear center
which is located outside the cross-section of the brake
carrier.
7. The brake carrier as claimed in claim 6, wherein the brake
carrier comprises an approximately C-shaped cross-section.
8. The brake carrier as claimed in claim 6, wherein the brake
carrier comprises an approximately U-shaped cross-section.
9. The brake carrier as claimed in claim 6, wherein the brake
carrier comprises an approximately T-shaped cross-section.
10. The brake carrier as claimed in claim 6, wherein the brake
carrier comprises an approximately I-shaped cross-section.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application is the US National Stage of International
Application No. PCT/EP2010/059620 filed Jul. 06, 2010, and claims
the benefit thereof. The International Application claims the
benefits of Austrian Patent Application No. A 1122/2009 AT filed
Jul. 16, 2009. All of the applications are incorporated by
reference herein in their entirety.
FIELD OF INVENTION
[0002] The invention relates to a brake carrier for undercarriage
frames of rail vehicles, wherein the brake carrier has a
torsionally soft, open cross-section and wherein the attachment to
the two longitudinal members of the undercarriage frame is
implemented as a rigid, non-articulated connection.
BACKGROUND OF INVENTION
[0003] Brake carriers are often inserted into the undercarriage
frame as transverse members in order to secure the braking
mechanisms in undercarriage frames for rail vehicles.
[0004] This causes the resulting braking torque to be transmitted
onto the undercarriage frame.
[0005] DE 14 55 189 A1 discloses a rigid railroad vehicle bogie
which comprises C-shaped transverse members that consequently have
a torsionally soft and open cross-section.
[0006] DE 25 43 558 A1 also discloses torsionally soft transverse
members having an open cross-section.
[0007] The weight of the undercarriage is increased due to the
brake carrier; furthermore, the introduction of the braking torque
leads to the undercarriage frame being subjected to undesirable
stresses.
SUMMARY OF INVENTION
[0008] An object of the claimed invention is to disclose an
improved solution for the brake carrier.
[0009] This object is achieved by a brake carrier for undercarriage
frames of rail vehicles, wherein the brake carrier has a
torsionally soft, open cross-section and wherein the attachment to
the two longitudinal members of the undercarriage frame is
implemented as a rigid, non-articulated connection, with the
braking mechanism being secured to the brake carrier in such a way
that the line of action of the braking forces runs through the
shear center which is located outside the cross-section of the
brake carrier.
[0010] A twist-free shear force flexure of the carrier is achieved
by means of the inventive constructional measure.
[0011] As a result the carrier can be constructed so as to be
lighter in weight. Furthermore, the undesirable stresses on the
undercarriage frame occurring due to the braking torque being
introduced into the undercarriage frame are reduced.
[0012] Advantageously, the brake carrier can have an approximately
C-, U-, T- or I-shaped cross-section.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The invention is explained in more detail with reference to
exemplary embodiments shown in the figures, in which by way of
example:
[0014] FIG. 1 shows the arrangement of the brake carriers in an
undercarriage frame,
[0015] FIG. 2 shows the attachment of a brake carrier to a
longitudinal member of the undercarriage frame, and
[0016] FIG. 3 shows the arrangement of braking mechanism and brake
carrier in an undercarriage frame.
DETAILED DESCRIPTION OF INVENTION
[0017] The schematic representation according to FIG. 1 shows an
undercarriage frame having two longitudinal members 1, 2, two brake
carriers 3, 4 and a cross member.
[0018] As shown in FIG. 2, the brake carriers 3, 4 are connected to
the longitudinal members 1, 2 in a rigid and non-articulated
manner. This can be accomplished for example by means of a welded
joint.
[0019] The representation according to FIG. 3 shows a braking
mechanism 6 with brake disk 5 which is connected by way of a
suspension link 7 to the brake carrier 3 having an approximately
C-shaped cross-section.
[0020] By means of the suspension link 7 secured to the back of the
C-shaped cross-section on the brake carrier 3 by way of an
articulated joint and a bolted fastening, the line of action of the
braking forces runs through the brake carrier's shear center which
is located in this position.
[0021] Owing to the open cross-section the brake carrier 3 is
torsionally soft, which means that it does not significantly affect
the suppleness of the undercarriage frame. As a result the
structural requirements in respect of the primary spring stage of
the undercarriage are accordingly also less stringent.
[0022] Components under torsional stress having an open
cross-section such as having a C, U, T or I shape, for example, are
torsionally softer than components having a closed cross-section
such as tubes or components having a rectangular cross-section and
being substantially stiffer.
[0023] By virtue of undercarriage frame and brake carrier being
structurally designed in such a way that the line of action of the
braking forces runs through the shear center which is located
outside the cross-section of the brake carrier, torsion-free
loading, i.e. a twist-free shear force flexure, is achieved.
[0024] As a result the brake carrier according to the invention can
not only be built lighter in weight, but thanks to the spatial
separation of shear center and physical carrier also provides
advantages in relation to the structural design possibilities of
the undercarriage frame.
* * * * *