EP2191069A1

EP2191069A1 - System for fastening a rail and tensioning clamp for such a system

Info

Publication number: EP2191069A1
Application number: EP08804830A
Authority: EP
Inventors: Winfried BÖSTERLING
Original assignee: Vossloh Werke GmbH
Current assignee: Vossloh Werke GmbH
Priority date: 2007-09-27
Filing date: 2008-09-26
Publication date: 2010-06-02
Anticipated expiration: 2028-09-26
Also published as: DK2191069T3; CN101815824A; PL2191069T3; PE20091139A1; PT2191069T; MX2010003277A; BRPI0817532A2; IL204527A0; ES2614952T3; UA98808C2; HUE031996T2; AU2008306993A1; CL2008002896A1; EA201000462A1; DE102007046543A1; AR068637A1; ZA201002183B; KR101627778B1; IL204527A; LT2191069T

Abstract

The present invention relates to a system for fastening a rail (2) and a tensioning clamp for such a system, said rail (2) having a rail foot (7), a bar (31) standing thereon and a rail head, with a carrier plate (5, 6) and a tensioning clamp (14, 15) held on the carrier plate (5, 6) which tensioning clamp has a middle portion (16) to brace the tensioning clamp on the carrier plate (5, 6), at least one torsional portion (19, 20) branching off from the middle portion (16) in a side direction and a holding arm (25, 26) attached to the torsional portion (19, 20) via a bent transitional portion (21, 22). Said arm extends starting from the transitional portion (21, 22) opposite to the torsional portion (19, 20), wherein the length LA of the torsional portion (19, 20) and the course of the transitional portion (21, 22) are coordinated to each other such that at least the transitional portion (21, 22) is led unsupported on the sides past an area of the carrier plate (5, 6) assigned to the middle portion of the tensioning clamp (14, 15). The end portion (29, 30) of the holding arm (25, 26) is bent in a novel manner such that when mounted it points in the direction of the bar (31) of the rail to be fastened (2).

Description

September 26, 2008

System for securing a rail and tension clamp for such a system

The invention relates to a system for fastening a rail, which has a rail foot, a web standing thereon and a rail head. The erfmdungsgemaße system includes a support plate and held on the support plate tension clamp. This tension clamp has a central portion for tightening the tension clamp on the support plate, torsion portion branching from the center portion at at least one lateral direction, and a support arm connected to the torsion portion via a bent transition portion extending from the transition portion opposite to the torsion portion and over the free end its end portion exerts a resilient elastic holding force on the rail of the rail to be fastened. In this case, the length of the torsion section and the course of the transition section are matched to one another in such a way that at least the transition section is guided past the side of a region of the support plate assigned to the middle section of the tension clamp.

An attachment system of this type is offered by the applicant under the name "System KS with SKL 24",

SI / cs 071356WO where "SKL 24" is the special type of tensioning clamp used in the known system.

In the known system, two ribs extending over the length of the rail to be mounted are formed on the support plate, delimiting between them a section which, when the system is completely assembled, stands the foot of the rail then fastened. The ribs serve on the one hand as lateral stops, which limit the transverse movements of the rail occurring when driving over a rail vehicle. On the other hand, the ribs are used in the known system for fastening the tension clamp, via which the holding force required for holding down the rail is resiliently applied to the rail foot.

Following the basic principle known from DE 20 2004 020 752 U1, the omnidirectional tension clamp "SKL 24" used in the known system is designed so that its torsion sections and retaining arms have a maximum spring travel and, associated therewith, maximum elastic resilience. For this purpose, the known tensioning clamp has a loop-shaped middle section, from the ends of which in each case a substantially straight torsion section m projects in the direction of the respective side. The Torsionsabschnitte then go in each case in a m plan view to 180 ⁰ C in the direction of the central portion zurückuckgebogenen transition section, in turn, in each case followed by a straight formed, substantially parallel to the respective side associated Torsionsabschnitt extending holding arm. The clear width between the torsion sections and their respective associated holding arm is m top view

SI / cs 071356WO is substantially constant and corresponds to the thickness of the rib measured transversely to the longitudinal extent of the rail to be fastened, plus an excess which is required to accommodate the rib in its thickness direction with play in the space surrounding the torsion sections and retaining arms.

In the known system, the retaining arms of the tensioning clamp, as with all fastening systems equipped with such tensioning clamps, in the fully assembled state, exert the required holding forces on the rail foot via the free end of their end sections.

The tension of the tension clamp on the support plate takes place in the known system via a screwed onto a clamping bolt nut. The clamping bolt is seated with its one end in a centrally formed in the top of the respective rib recess and is guided at its other end by the bounded by the central portion opening.

The above-explained "System KS with SKL 24" has met the expectations placed on this system in practical use. However, it came about that the support arms were so inaccurately positioned with their free ends on the rail that under the stresses of rail and mounting system occurring in practice there was a risk of slipping off the rail.

In addition, the assembly of the known system has proved problematic. Thus, it can happen in particular in an automatic assembly under the prevailing rough conditions on the ground, that the tension clamp

SI / cs 071356WO twisted under the action of the assembly and clamping forces and has left automatically required for their optimal function position on the rib.

Against the background of the prior art described above, the invention was based on the object to provide a system for fastening a rail, which can be easily mounted while maintaining the spring behavior of the known fastening system and has an overall improved reliability. In addition, a particularly suitable for this purpose clamp should be specified.

With regard to the system, this object has been achieved according to the invention by the fastening system specified in claim 1. Advantageous embodiments of the system according to the invention are specified in the dependent claims on claim 1.

With regard to the tension clamp, the solution according to the invention of the abovementioned object is that such a tension clamp is designed according to claim 12. Advantageous embodiments of the tensioning clamp according to the invention are mentioned in the dependent on claim 12 claims.

In a system according to the invention as in the prior art as a spring element for generating the required to hold down the rail resilient elastic holding force, a tension clamp is used, which is designed taking into account the longitudinal direction of the rail to be fastened length of the support plate so that its at least one support arm can travel maximum spring travel. In contrast to the prior art is the

SI / cs 071356WO End portion of the support arm of the torsion away pointing away angled so that it points in the mounting position in the direction of the web of the rail to be fastened.

By this measure, on the one hand the support area, in which the holding arm with its end portion exerts the required hold-down force on the rail, moved from the edge of the rail foot in the direction of the rail web. In this way, it is ensured that the required holding force is always properly transferred from the respective arm to the rail, when the rail due to the lateral forces occurring when driving over the rail and an inaccurate lateral support on the support plate excessively strong to their longitudinal direction moves.

On the other hand is achieved by the inventive design of the tensioning clamp used in a system according to the invention a lower tendency to twist during assembly. Thus, the invention carried out displacement of the support portion in the direction of the rail web despite the otherwise still close to the ribs along current alignment of torsion and arm a higher resistance to rotation, as in the known design with their exclusively straight holding arms Case was.

Another advantage of the invention is that a tensioning clamp according to the invention, taking into account the dimensions of the other belonging to a system according to the invention components can be designed so that between rail and / or rib another component, such as an insulating member for suppressing

SI / cs 071356WO electrical bridges between rail and fastening system, can be arranged.

As a result, the invention thus provides, with surprisingly simple means, a fastening system in which both the assembly safety and the operational reliability are significantly increased compared to the prior art.

According to an advantageous embodiment of the invention, in particular from a production point of view, the end section of the holding arm is angled relative to the section of the holding arm adjoining it in such a way that the imaginary extension of the end section encloses an angle of less than 90 ° with the web of the rail in the assembly position. End sections shaped in this way can be produced particularly economically by conventional bending methods on the machines available in practice.

The safety against twisting of the tensioning clamp mounted in a system according to the invention can additionally be increased by aligning a section of the holding arm emanating from the transition section in the direction of the torsion section as seen in plan view. The reversal region, in which the relevant section initially directed in the direction of the torsion section then merges into the end section of the holding arm pointing away from the torsion section, can be used to support the tensioning clamp on a correspondingly formed form element of the support plate.

SI / cs 071356WO This shaped element can be, for example, a rib formed on the upper side of the support plate associated with the tensioning clamp, on which the middle section of the tensioning clamp is truncated. Against this rib, the tension clamp can be braced in a conventional manner. Is then the least clear width between the torsion and the arm at least equal to the thickness of the rib, the clamp can on the one hand easily placed on the support plate and thereby absorb the rib between them. On the other hand, the rib can just as easily be used to secure the position of the tension clamp. For this purpose, the clear width between the torsion portion and the transition point, seen in plan view in the direction of the Torsionsabschnitts directed portion of the support arm m whose angled end portion merges, be sized so that the support arm in the mounting position in the region of the transition point at the to be fastened Rail assigned surface of the rib is truncated.

The resilient properties of the installed in a erfmdungsgemaßen system tension clamp can also be supported by the fact that in the assembled position of the torsion section runs parallel to the rib, without abutting on this. In this embodiment, no contact with another component hinders the free mobility of the torsion section.

Also in a erfmdungsgemaßen system, the tension clamp can be made ω-formig by the central portion is formed schlaufenformig and depart from it two oppositely oriented torsion, to each of which a transition section

SI / os 071356WO in each case a holding arm is connected with an angled end section.

According to the prior art, a tensioning clamp designed in accordance with the invention has a middle section, at least one torsion section extending laterally from the central section, at least one transition section adjoining the torsion section and at least one retaining arm connected to the transition section. which, viewed in plan view, is oriented opposite to the torsion section. According to the invention, the end section of the holding arm assigned to the free end of the holding arm is angled away from the torsion section in a plan view as seen in plan view.

For the reasons already set out above, it is favorable from a manufacturing point of view if the end section encloses an obtuse angle with a part of the holding arm adjoining it.

The invention will be explained in more detail with reference to a drawing illustrating an exemplary embodiment. They show schematically:

1 shows a system for fastening a rail in a plan view.

Figure 2 shows the system for securing a rail in a side, partially cutaway view.

FIG. 3 shows a top view of a tensioning clamp used in the system shown in FIGS. 1 and 2; FIG.

SI / cs 071356WO FIG. 4 shows the tension clamp according to FIG. 3 in a view from the rear; FIG.

Fig. 5, the tension clamp of FIG. 3 in a front view.

The system 1 is used to attach a rail 2, which is part of a track body, not further shown.

The rail fastening system 1 has in each case two, identically shaped support plates 5, 6 arranged on a threshold, a plate or another base 3 suitable for supporting the track body, which are also referred to in the technical language as "ribbed plates" above a base plate 4. The support plates 5,6 are arranged opposite to the foot 7 of the rail 2 and screwed in a conventional manner by means of screws with the substrate 3. In order to brace the rail 2 with defined compliance in the vertical direction on the base plate 4, an elastic layer is provided between the rail 7 and the base plate 4 in a conventional manner.

The support plates 5, 6 each have, in plan view, a rectangular basic shape with a longitudinal LT measured parallel to the longitudinal axis L of the rail 2. In the area adjoining the narrow side 8 away from the rail 2, its upper side is in each case plane-shaped in the form of a plane 9, 10 sloping in the direction of the narrow side 8.

SI / cs 071356WO In addition, on the support plates 5, 6 in the region of their upper side 9 adjacent to the rail foot 7, a respective rib 11, 12 adjoining the narrow side 8, the rail 2 associated narrow side 14 of the respective support plate 5.6 is formed, which extends over the entire length LT of the respective support plates 5,6 extends. These ribs 11, 12 ensure that the support plates 6, 7 continue to guide the rail 2 securely even when it is due to the load occurring when the rail 2 is moved over by a train to vertically oriented lifting movements and transversely to the longitudinal direction L of the rail 2 directed transverse movements comes.

Finally, at a central location in the support plate 5.6 not shown Befestigungsoffnung formed, which is designed in known manner as mushroom head. In these

Befestigungsoffnung is designed as a hook screw clamping screw 13 is inserted so that it is held with its screw head in the Befestigungsoffnung and its threaded portion is above the top of the rib 11,12 addition.

For holding down the rail 2 clamping clamps 14,15 are provided, one of which is assigned to each of the support plates 5.6.

The clamps 14,15 are each formed ω-shaped. They have a loop-shaped middle section 16 which, viewed in itself, is designed to be U-shaped in plan view and surrounds the threaded section of the clamping screw 13 projecting beyond the respective rib 11, 12 by at least 180 ° in the assembly position. The base of the middle section

SI / cs 071356WO 16 is assigned to the rail 2, while its opening points in the mounting position of the rail 2 away.

The legs of the middle section 16, which lead away from the base in a semicircular fashion in a plan view in a semicircular shape, first pass into a torsion section 19, 20 in a downwardly extending sheet piece 17, 18. The torsion sections 19, 20 are connected without jump to the respective sheet piece 17, 18, in such a way that, on the one hand, they are arranged at right angles to the respective limbs of the central section 16 in plan view and extend substantially parallel to the rail 2 in the assembly position. At the same time, they have obliquely upward at an angle β 1 when the clamping clamps 14, 15 are resting on one level, so that they are truncated in the assembly position only in the reverse region of the respective sheet stub 17, 18 on the respective support plate 5, 6. The length LA of the torsion sections 19, 20 is matched to the length L of the respective ribs 11, 12 of the support plates 5, 6 such that their end facing away from the middle section 16 projects laterally beyond the respective rib 11, 12.

Each of the torsion sections 19, 20 is adjoined by a transition section 21, 22, which, viewed in plan view, is bent by more than 180 ° in the direction of the base of the middle section 16. The radius of curvature of the transition sections 21, 22 is in each case greater than the thickness D of the respective rib 11, 12.

At the transition portions 21,22 each have a first part 23,24 each of a holding arm 25,26 is formed. The partial pieces 23,24 extend starting from the respective Ubergansabschnitt 21,22 initially seen in plan view in

SI / cs 071356WO Direction of the arranged on the other longitudinal side of the clamps 14,15 Torsionsabschnitte 19,20. At the same time, the holding arms 25, 26 are aligned overall at the same angle β 1 as the torsion sections 19, 20.

The sections 23,24 of the support arms 25,26 go in each case in a curved transition point 27,28 without a jump in each case an end portion 29,30 of the respective support arm 25,26 over. The curvature of the transition point 27, 28 is chosen such that the end sections 29, 30 are directed away from the torsion sections 19, 20 in the direction of the web 31 of the rail 2 to be fastened. The included between the sections 23,24 and their respective end portions 29,30 of the support arms 25,26 in plan view angle ß2 corresponds to about 120 °. At the same time, the clear width W at the narrowest point between the transition points 27, 28 and the respectively opposite torsion portion 19, 20 corresponds to a slight excess of the thickness D of the respective rib 11, 12.

For fixing the respective tensioning clamp 14, 15 on the respectively associated rib 11, 12, the middle section 16 is placed on the respective tightening screw 13 such that the tightening screw 13 is guided through the opening surrounded by the central section 16. Subsequently, a nut 32 is screwed onto the clamping screw 13, which presses the central portion 16 against the respective rib 11,12 and so the respective tensioning clamp 14,15 total braced.

The Torsionsabschnitte 19,20 are now facing away from the rail 2 and the support arms 25,26 on the

SI / cs 071356WO Rail 2 facing side of the respective rib 11,12 arranged. The height H of the bow pieces 17, 18 of the tensioning clamps 14, 15 is dimensioned such that the tensioning clamps 14, 15 are supported in the torsion portions 19, 20 on the respective support plate 5, 6 only in the region of the transition from the bow pieces 17, 18 are. Since at the same time the transition portions 21,22 are guided around at a distance around the narrow sides of the ribs 11,12, the tension clamps 14,15 on their Torsionsabschnitte 19,20 and transition sections 21,22 to the support area 32,33 of the end portions 29,30 of Move retaining arms 25,26 largely free springy.

When the respective tensioning clamp 14, 15 is placed on the rib 11, 12 assigned to it, the retaining arms 25, 26 with their respective transition point 27, 28 loosely rest on the end side of the respective rib 11, 12 assigned to the rail 2. If it comes in the course of screwing the nut 32 to a rotation of the clamps 14,15 due to the introduced via the nut 32 torques, the support arms 25,26 support with their respective transition point 27,28 against the rib 11,12 and prevent such excessive deformation, which could lead to a malfunctioning of the tensioning clamp 14,15.

In mounting position, the end portions 29,30 of the support arms 25,26 are angled so that their imaginary extension in mounting position with the web 31 of the rail 2 forms an angle ß3 of about 50 °.

The end portions 29,30 of the support arms 25,26 lie with their Auflagebreichen 33,34 in the direction of the web 31 of the rail 2 against the edge 35 of the rail foot. 7

SI / cs 071356WO offset on the top and thus also counteract excessive deformation of the respective tensioning clamp 14,15 during their assembly. At the same time, the offset in the direction of the rail web 31 supporting position of the end portions 29,30 ensures that despite the minimized width B of the clamps 14,15 the required hold-down forces are always transmitted safely even with transverse movements of the rail 2.

SI / cs 071356WO REFERENCE NUMBERS

1 system for fastening the rail 2

2 rail

3 underground

4 base plate 5.6 support plates

7 rail foot of the rail 2

8 narrow side of the support plates 5.6

9,10 level at the top of the support plates 5,6

11.12 ribs

13 clamping screw

14,15 tension clamps

16 middle section of the clamps 14,15

17,18 bow pieces of the tension clamps 14,15

19,20 Torsionsabschnitte the tension clamps 14,15

21,22 transition sections of the clamps 14,15

23,24 part each of a holding arm 25,26

25.26 holding arms

27,28 transition point of the support arms 25,26

29,30 end portions of the support arms 25,26

31 web of the rail to be fastened 2

32 mother

33,34 contact areas of the end sections 29,30

35 edge of the rail foot 7 ßl, ß2, ß3 angle

B Width of the clamps 14,15

D thickness of the respective rib 11,12

H height of the bow pieces 17,18

L longitudinal axis of the rail 2

LA length of the torsion sections 19,20

LT length of the support plates 5, 6

W clear space

SI / cs 071356WO

Claims

September 26, 2008P ATENTANSPR O CHE

1. System for securing a rail (2), the one

Rail base (7), a standing thereon web (31) and a rail head having a support plate (5,6) and on the support plate (5,6) held clamp (14,15) having a central portion (16) for Tensioning the tension clamp on the support plate (5, 6), at least one torsion portion (19, 20) branching laterally from the middle portion (16) and one connected to the torsion portion (19, 20) via a bent transition portion (21, 22) Holding arm (25,26) which extends from the transition portion (21,22) opposite to the torsion portion (19,20) and over the free end of its end portion (29,30) a resiliently elastic hold down force on the rail foot (7) the rail (2) to be fastened, wherein the length (LA) of the torsion section (19, 20) and the course of the transition section (21, 22) are matched to one another in such a way that at least the transition section (21, 22) is laterally free on one side the The center section (16) of the tensioning clamp (14, 15) is guided past the region of the support plate (5, 6) assigned to it, ie, the end section (29, 30) of the holding arm (25, 26) of the

SI / cs 071356WO Torsionsabschnitt (19,20) is pointing away angled so that it points in the mounting position in the direction of the web (31) of the rail to be fastened (2).

2. System according to claim 1, characterized in that the end portion (29,30) of the support arm (25,26) is angled such that the imaginary extension of the end portion (29,30) in mounting position with the web (31) of the rail ( 2) includes an angle (β3) of less than 90 °.

3. System according to one of the preceding claims, d a d u r c h e c e n e e c h e n e, as seen in plan view from the transition portion (21,22) outgoing portion (23,24) of the support arm (25,26) in the direction of the torsion portion (19,20) is aligned.

4. System according to any one of the preceding claims, characterized in that the support plate (5,6) carries on its the tensioning clamp (14,15) associated upper side a rib (11,12) on which the central portion (16) of the tension clamp (14 , 15) is supported.

5. System according to claim 4, characterized in that the tension clamp (14,15) on the support plate (5,6) by means of a on the

SI / cs 071356WO Rip (11,12) clamped clamping means (13) is braced.

6. System according to one of claims 4 or 5, characterized in that the smallest clear width (W) between the torsion portion (19,20) and the support arm (25,26) at least equal to the thickness (D) of the rib (11,12 ).

7. System according to claim 6, characterized in that the angled end section (29, 30) of the holding arm (25, 26) is integrally formed on its section (23, 24) aligned in the direction of the torsion section (19, 20).

8. System according to claim 7, characterized in that the clear width (W) between the torsion (19,20) and the transition point (27,28), as viewed in plan view in the direction of the torsion (19,20) directed portion (23,24) of the support arm (25,26) merges into the angled end portion (29,30), is dimensioned such that the holding arm (25,26) in the assembly position in the region of the transition point (27,28) at the fastened rail (2) associated surface of the rib (11,12) is supported.

9. System according to one of claims 5 to 8, d a d e r c h e c e n e c e s t e, d a s s in the assembled position of the torsion (19,20)

SI / cs 071356WO runs parallel to the rib (11,12), without abutting this.

10. System according to any one of the preceding claims, characterized in that the tension clamp (14,15) is carried out ω-formig by the central portion (16) is formed schlaufenformig and from him two oppositely oriented torsion portions (19,20) go on in each case a holding arm (25, 26) having an angled end section (29, 30) is connected via a respective transition section (21, 22).

11. The system according to claim 1, wherein the torsion section (19, 20) of the tensioning clamp (14, 15) is truncated in the assembly position on the support plate (5, 6).

A tensioning clamp for securing a rail (2) to a central portion (16) having at least one torsion portion (19, 20) extending laterally from the central portion (16), at least one adjoining the torsion portion (19, 20) Transition portion (21,22) and with at least one of the transition portion (21,22) connected to the holding arm (25,26), which is seen in plan opposite to the torsion portion (19,20) aligned, characterized in that the free end of the support arm (25,26) associated end portion (29,30) of the support arm (25,26) in

SI / cs 071356WO Top view seen from the torsion portion (19,20) is pointing away pointing away.

13. The tensioning clamp according to claim 12, wherein the end section (29, 30) has an obtuse angle with a section of the holding arm (25, 26) adjoining it

(β2).

14. A tension clamp according to claim 12 or 13, wherein a portion (23, 24) of the support arm (25, 26) is aligned in the direction of the torsion portion (19, 20) starting from the transition portion (21, 22).

15. A tension clamp according to claims 13 and 14, wherein said end portion (29, 30) is connected to said portion (23, 24).

16. A tension clamp according to any one of claims 12 to 15, wherein it forms a curved curve bent without a jump.

17. A tension clamp according to any one of claims 12 to 16, wherein it is designed in an ω-shape, in that the middle section (16) is loop-shaped and from it two torsion sections (19, 20) oriented opposite to each other depart, over each

SI / cs 071356WO a transition portion (21,22) each have a holding arm (25,26) with an angled end portion (29,30) is connected.

SI / cs 071356WO