DE102007044098B3 - Railway track fixing system, has elastic members supported on guidance plates, and bulges and recesses of bearing faces extended in parallel with horizontal rigid foundation under assembling condition of wedge-shaped members - Google Patents

Abstract

The system has guidance plates for transversely supporting a railway track (2). Elastic members (12, 13) are supported on the guidance plates. Tension devices are utilized for tensioning the elastic members. The guidance plates are supported by supporting wedge-shaped members (16, 17) on a bearing surface. Bulges and recesses of bearing faces (20) are mutually associated with the wedge-shaped members and the guidance plates, and are extended in parallel with a horizontal rigid foundation under an assembling condition of the wedge-shaped members.

Description

The The invention relates to a system for securing a rail on a solid ground with a guide plate for lateral support the to be fastened. Rail, with a spring element, which on the guide plate supported is and has at least one spring arm, which is an elastic Holding force on the foot of the Exercise rail, and with a tensioning means for tensioning the spring element, wherein the guide plate in the mounting position with their facing away from the rail contact surface against a support surface over Wedge element supported is that of the contact surface the guide plate assigned contact surface with its associated with the support surface contact surface includes an acute angle, and where the the guide plate assigned contact surface at least one fore- and / or one return has, the form-fitting with at least one correspondingly shaped forward and / or return coupled to that of the respective contact surface of the Wedge element associated contact surface of the guide plate is formed.

firm Substrates, on which systems of the type according to the invention are mounted are also referred to as "fixed carriageway". she exhibit in contrast to a track superstructure formed from loose gravel no own indulgence on. Typically, they are solid Roadways formed by concrete slabs on which also off Concrete cast sleepers are placed, which in turn are the rails wear.

The lateral support The rails on such a solid ground are in the Usually with the help of support devices, the two sides of the rail foot between the rail foot and each one laterally spaced from the rail foot Stop be positioned. This attack is customary for this purpose in the form of a support shoulder or similar formed on the respective solid substrate.

So typically have for mounting rails on one Fixed roadways used concrete sleepers usually lateral Stop shoulders, against which the lateral guiding the respective rail specific guide plates supported are. By suitable fasteners, usually screws, become these guide plates either directly on the solid ground or the respective threshold fixed. A corresponding system is in practice, for example under the name "System 300 "known.

Usually if the fastening elements are additionally used for tensioning a spring element, the one directed towards the solid ground holding power on the rail foot of the to be fastened rail. Dependent from the shape of the substrate and the fasteners used will be additional Shims and fasteners for proper alignment and holding the Rails needed.

An attachment system of this type is for example in the DE 101 57 676 A1 described. With the existing in such a system wedge element, the distance of the respective guide plate to the support surface can be determined. Due to its wedge shape allows the actuator from a position in which the distance of the guide plate and, accordingly, the rail of the respective support surface is minimal, easily push in a position in which a maximum distance is present. Of course, can be between these extreme positions of the actuator choose a variety of other parking positions, each set a different distance of the rail to the stop surface and, accordingly, another track.

A essential property of the known from the prior art Systems is that after the finished assembly the connection between the guide plate and the actuator is so tight that an unintentional relative movement these two elements is prevented. For this purpose instruct the known system, the mutually associated contact surfaces of Wedge element and guide plate latch-like projections and recesses, the aligned in the mounting position perpendicular to the solid ground are so intertwined that the wedge element over the interlocking projections and recesses with the guide plate positively coupled is. At the same time is due to the vertical orientation of the forward and Recesses ensured that the wedge element also under the action of the longitudinal and transverse forces, which it is exposed in operation, its originally set position maintains.

For the ability to change the position of the respective guide plate relative to the respective support surface over a certain margin, in the above-described prior art, a cumbersome assembly and disassembly of the entire system must be taken into account. In particular, the interlocking of guide plate and wedge element described in this prior art entails that for a subsequent change in the position of the wedge element, the system must be completely disassembled. In addition, the fineness of the adjustability of the position of the wedge member is directly affected by the fineness of the screening. If it is coarse, then the position of the wedge element can only be adjusted in large steps. Is she small, Although a finer adjustability is given. At the same time, however, there is a risk that the individual latching projections can not withstand the loads occurring during operation.

In front In this background, the object of the invention was a To provide system of the type specified, in a simpler way can be mounted and adjusted.

These Task is inventively by a according to claim 1 marked system solved Service. Advantageous embodiments of this system are in the to claim 1 back claims specified.

at a system according to the invention exists as in the prior art, the possibility of production and Assembly-related inaccuracies in the assignment of support angles and rail or guide plate compensate for the fact that the guide plate over a longitudinal against the rail to be fastened tapered wedge element the contact surface of the support bracket supported is. The arrangement of such a wedge element between the guide plate and support angles allows it, even larger mispositioning from support bracket and guide plate compensate without a specially adapted guide plate is required. Rather, in this embodiment, the Invention of compensation each alone about the displacement of the wedge element.

One a significant advantage of the invention in this respect is that the guide plate with a corresponding arrangement of the wedge element uniformly with a uniform wall thickness can be performed can. Thus, in a system according to the invention, the guide plate a uniform, in Top view have rectangular basic shape.

The Possibility, the guide plate evenly shaped to shape leads not only to a minimized weight, but also allows a particularly even introduction the one from the guide plate absorbed forces in the wedge element and from this on the support bracket. As a result of uniform loading can the guide plate especially be designed small and lighter.

Around an optimal investment of support bracket and guide plate to ensure the wedge element the wedge element has a first contact surface associated with the guide plate and a support angle assigned second contact surface on that with the first contact surface includes an acute angle.

practical Experiments have shown that a particularly good effect of a used according to the invention Wedge element results when the contact surfaces of the wedge element a Include angles of 5-15 °.

One secure hold of the wedge element in each set during assembly Position is now achieved in a system according to the invention characterized that of the guide plate assigned contact surface at least one fore- and / or one return has, the form-fitting with at least one correspondingly shaped forward and / or return coupled to that of the respective contact surface of the Wedge element associated contact surface of the guide plate is formed.

According to the invention this is Forward or return aligned so that it is parallel in the assembled state of the wedge member extend to the top of the flat solid ground. This in the mounting position allows horizontal alignment of the projections and recesses it, wedge element and guide plate against each other without disassembling the entire system must become. Rather, in a system according to the invention the wedge element already after a release of the guide plate acting clamping forces be moved.

simultaneously has surprisingly been that when clamping the guide plate against the solid ground and the form-fitting coupled with the guide plate Wedge element is braced so that in the field of positive coupling Self-locking occurs. By the guide plate and the wedge element positively interlocking be mounted and the guide plate is braced against the solid ground, the positive coupling of Wedge element and guide plate from a non-positive, through the from the guide plate exerted on the wedge element clamping forces superimposed caused connection which an automatic Solve the Connection of wedge element and guide plate prevented.

To be strengthened This effect can be characterized by having more than one forward and / or return at the guide plate associated contact surface formed of the wedge element.

The effectiveness the application of the wedge element with the transmitted from the guide plate Holding force can be further improved by that on the guide plate a projection is formed, which in the mounting position on the free top of the wedge element rests.

Is it for a safe guidance of the respective rail vehicle on the with the inventive Sense to be fastened rail required to tilt the rail to a certain extent, this can be accomplished in a system according to the invention in that a base plate is provided, via which the rail to be fastened is supported on the solid surface, said base plate a the Fixed support surface associated with and one of the underside of the rail foot of the rail to be fastened associated support surface and the support surface viewed in cross section is aligned inclined at an angle to the contact surface.

Especially in the case that a base plate is present, can be attached to the fastened rail associated side of the guide plate a projection be formed, in the assembled state, the base plate or the Underfoot rail. This The projection is particularly safe and easy to use a lifting of the guide plate under unfavorable Operating conditions. In the case of an elastic intermediate layer is provided on the base plate in the assembled state of the system according to the invention is located, for this purpose at the intermediate layer a recess be formed, in which the projection engages in the assembled position.

On Road surfaces, which are just trained, so no stop shoulders to the side support the guide plates offer, fastening systems according to the invention can be characterized insert that for the lateral support the for the lateral guidance the rail respectively required guide plate a support bracket is provided, which is screwed to the solid ground and a contact surface possesses, against which the guide plate on its side away from the rail foot Side supported is. The support angle In operation, it picks up the rails extending from the rail and transferred from the guide plate transverse forces on. With the support bracket Thus, it is possible in a simple manner, a fastening system on a flat surface too mount, without that there a separate stop shoulder or the like must be designed.

Especially economical and at the same time stable, the support bracket provided according to the invention be made of a steel material.

A particularly material-friendly introduction of occurring during operation Forces over the respective attachment in the solid ground can be achieved be that the support angle of a plastic material, such as a polyolefin or polyamide. Through the use of plastics for the Production of the support brackets can over it In addition, a significant weight savings can be achieved.

Independently of, what material the support bracket is made, can she with reinforcing ribs Be provided to safely absorb the forces occurring during operation can. Becomes used a made of a plastic support bracket, so can its strength in addition thereby increased be that the plastic material contains reinforcing fibers.

A very good transmission from the respective support angle absorbed forces on the firm ground without the need to remove the underground to prepare separately, can be achieved by: in the surface the solid ground associated Aufstandfläche the support bracket a grooved rough Structure is formed. The rough structure may preferably be sawtooth in cross-section be shaped to the respective lateral forces particularly safe in the Substrate to initiate. For this purpose, in the footprint of the support bracket parallel to the contact surface running line-shaped Wells be formed.

alternative or in addition for a specific roughening of the solid surface associated with the footprint of the support bracket can also be a between the footprint of the support bracket and the surface of the firm ground, the friction coefficient between footprint of the support bracket and surface of the solid underground increasing Intermediate be provided. To make their installation as easy as possible make the liner already at the prefabrication of the support bracket stuck with the footprint of the support bracket be connected.

For the screw connection of the support bracket on the solid surface of the support bracket may have a through hole for a fastening screw. A particularly simple, preferably automatically feasible installation let yourself doing so by doing a tensioning element made of an elastic plastic material is provided, which inserted in the mounting position through the passage opening Screw with a force directed against the force exerted by the screw Restoring force applied. This clamping element is preferably sitting captive held directly in the respective passage opening. When using such a clamping element are to be clamped the elements of the known fastening systems commonly used, often awkward no longer needed to handle spring washers.

To the position of a support bracket used in the invention in a simple manner to the Position of the rail or to be able to adjust between rail and support angle each existing guide plate may be present on the support bracket means which allow attachment of the support bracket in a position relative to the rail to be fastened, in which the contact surface of the support bracket at an angle is aligned with the longitudinal axis of the rail. These adjustment means may be formed by two through holes formed in the support bracket, through which a respective fastening screw can be inserted in such a way that the one screw has a spacing which differs from the other screw relative to the contact surface of the support bracket.

Also for easy adjustment of the position of an inventively used support bracket to the respective position of the rail or the guide plate, it may be advantageous be, at the support angle a means of adjusting his position in a normal to his contact surface to provide aligned direction. In practice, this means for example, as an eccentric bush or toothed disk, respectively preferred made of plastic, be realized.

Especially in the case that a base plate is present, can be attached to the fastened rail associated side of the guide plate a projection be formed, in the assembled state, the base plate or the Underfoot rail. This The projection is particularly safe and easy to use a lifting of the guide plate under unfavorable Operating conditions. In the case of an elastic intermediate layer is provided on the base plate in the assembled state of the system according to the invention can formed for this purpose on the intermediate layer a recess be, in which the projection engages in assembly position.

following the invention will be described with reference to an exemplary embodiment Drawing closer explained. Show it:

1 a system for securing a rail in a view from above;

2 the system according to 1 in a frontal, partially cutaway view;

3 one at the in 1 shown system supporting angle in a view from above;

4 the support angle according to 3 in a partially sectioned perspective view;

5 a section A of 2 in an enlarged view.

The system 1 for fastening a rail 2 on a solid base formed by a concrete slab 3 includes an elastic intermediate plate 4 directly on the continuous flat surface 5 of the solid ground 3 rests.

On the intermediate plate 4 is a base plate made of steel 6 that the intermediate plate 4 covering and in practical use when crossing the rail 2 occurring by a rail vehicle, not shown here, on the rail 2 on the base plate 6 acting loads on the intermediate plate 4 distributed.

On the base plate 6 is another liner 7 hung up. Their width corresponds at most to the width of the rail foot 8th the rail, which with its bottom on the liner 7 stands.

To any required inclination of the rail 2 opposite the flat surface 5 of the solid ground 3 can adjust the base plate 6 have a wedge-shaped cross-sectional shape, wherein the rail foot 8th associated top with the intermediate plate 4 associated underside of the base plate 6 includes an acute angle.

For lateral support of the rail 2 opposite to the transverse forces occurring when driving over is on both sides of the rail foot 8th one guide plate each 9 . 10 arranged. The guide plates 9 . 10 each have one on the rail foot 8th fitting support surface 11 on and are on corresponding support sections 11a on the flat surface 5 of the solid ground 3 ,

At its lower, to the surface of the firm underground 3 adjoining section can be attached to the support surface 11 the guide plates 9 . 10 a cam-like projection, not shown here, be formed, which in a correspondingly shaped, also not shown here recess of the elastic intermediate plate 4 protrudes and under the base plate 6 attacks. In this way, the respective guide plate 9 . 10 held in a positive manner in the vertical direction, so that a lifting of the guide plates 9 . 10 from the underground 3 Even with the occurrence of unfavorable in this regard longitudinal forces FL or shear forces FQ is safely excluded.

On their free tops, the guide plates 9 . 10 in a conventional manner shaped mold elements, the guides for each one as a spring element for bracing the rail 1 on the firm ground 3 serving ω-shaped tension clamp 12 . 13 form. For tensioning the tension clamps 12 . 13 are clamping devices in the form of screw 14 . 15 provided in one in the solid underground 3 introduced, not shown dowels are screwed. The screws 14 . 15 load on their screw head the middle section of the clamps 12 . 13 in a conventional manner such that the tension clamp 12 . 13 over the free, on the top of the rail foot 8th resting ends of their arms the required spring-elastic holding force on the rail foot 8th exercise.

The lateral support of the guide plates 9 . 10 via a respective wedge element 16 . 17 each against a support bracket 18 . 19 ,

The wedge elements 16 . 17 each have a triangular basic shape in plan view, wherein their respective guide plate 9 . 10 assigned, in mounting position parallel to the rail 2 extending contact surface 20 with their respective support angle 18 . 19 associated contact surface 21 in plan view includes an acute angle α1 of 5-15 °.

At the same time is the contact surface 20 so inclined to the vertical, that the solid ground 3 assigned lower footprint 22 wider than the free top 23 the wedge elements 16 . 17 ,

The contact surface 20 the wedge elements 16 . 17 is in each case a reverse inclined, parallel to the rail 2 aligned contact surface 24 the respective guide plate 9 . 10 assigned. In the contact area 20 the wedge elements 16 . 17 and the contact surface 24 the guide plates 9 . 10 are each corresponding to each other, line-like across the width of the respective surfaces 20 . 24 extending depressions 25 . 26 and projections 27 . 28 so shaped that the projections 27 of the respective wedge element 16 . 17 into the wells 26 the respective guide plate 9 . 10 grab and vice versa.

In this way, a positive connection of the wedge elements 16 . 17 with the respective guide plate 9 . 10 produced. Which in consequence of on the guide plates 9 . 10 from the respective screw 14 . 15 applied clamping forces in the field of this positive coupling adjusting friction is so high that self-locking occurs and an automatic wandering out of the wedge elements 16 . 17 is reliably prevented from its mounting position even at high shear forces.

The tension of the guide plates 9 . 10 against the respective wedge element 16 . 17 in addition, in each case by one in the direction of the respective wedge element 16 . 17 above loading section 29 supported, to the respective guide plate 9 . 10 in the area of the transition of their contact area 24 is formed to its top. The load section 27 It is shaped and designed so that it is ready for assembled and tensioned guide plates 9 . 10 a pressing force P on the respective wedge element 16 . 17 exercises.

To the exact alignment of the wedge elements 16 . 17 relative to their associated guide plates 9 . 10 To simplify, are on the wedge elements 16 . 17 and the guide plates 9 . 10 marks 28 provided, which facilitate reading the respective relative position.

The support angles 18 . 19 are each made in one piece from a fiber-reinforced plastic. You have one at the contact surface 21 their respective associated wedge element 16 . 17 fitting support surface 31 whose height is greater than the height of the wedge elements 16 . 17 is. The support surface 31 is at the free end of a support section 32 the support angle 18 . 19 formed at right angles to one on the surface 5 of the solid ground 3 resting basic section 33 the support angle 18 . 19 is aligned.

Opposite the base section 33 is the support section 32 against the base section 33 three stiffening sections extending substantially at right angles from it and triangular in side view 34 . 35 . 36 supported, whose free top from the top of the support section 32 starting at an angle downwards. From the stiffening sections 34 . 35 . 36 is one at the outer edge and the other in the middle of the support bracket 18 . 19 educated.

In the area between the stiffening sections 34 . 35 . 36 remaining free space is in the basic section 33 the support angle 18 . 19 in each case one passage opening 37 . 38 formed. The centers of these openings 37 . 38 have such a different distance to the support surface 31 the support angle 18 . 19 on that, seen in plan view, the connecting line of the centers of the through holes 37 . 38 with the support surface 31 include an acute angle α2, which is the same as that of the contact surface 21 and the contact surface 20 the wedge elements 16 . 17 included angles α1. In this way, the respective support angle 18 . 19 using two in the solid underground 3 used, not visible here dowels, on a parallel to the rail 2 extending line are arranged, readily be fixed so that its support surface 31 positive fit at the associated contact surface 21 of the respective wedge element 16 . 17 is applied.

Those at the bottom of the base section 33 formed footprint of the support bracket 18 . 19 is each with a frictional resistance increasing layer 39 busy. This can be from a Rubber material exist, which directly on the base section 33 may be vulcanized to allow the simplest possible installation, or only during assembly itself as a loose intermediate layer between the respective support bracket 18 . 19 and the solid ground 3 is placed.

Each of the through holes 37 . 38 is a circular view in plan view 40 assigned to the top of the base section 33 is formed and whose center is aligned with the center of the through holes 37 . 38 is aligned. In the pictures 40 each sitting as a clamping element serving ring 41 . 42 which is made of a resiliently elastic plastic material. The height of the rings 41 . 42 is dimensioned so that the rings in the preassembled state over the edge of the respective recording 40 protrude.

To the mounting of the support bracket 18 . 19 each one screw 43 . 44 through the passage openings 37 . 38 inserted and screwed into the underneath, not visible here dowels screwed. Once her screw head on the elastic rings 41 . 42 rests, the rings become 41 . 42 pressed together with continued screwing, making them one against the other from the respective screw 43 . 44 exerted applied clamping force directed elastic restoring force. In this way, a secure hold of the screws 43 . 44 and the support angle 18 . 19 always guaranteed even under unfavorable conditions.

To the between the respective guide plate 9 . 10 and the support surface 31 of their respective associated support bracket 18 . 19 filling existing space safely, that can be done between each support angle 18 . 19 and the respective guide plate 9 . 10 arranged wedge element 16 . 17 along the rail 2 be moved. This is the screw 14 . 15 containing the respective guide plate 9 . 10 against the solid ground 3 braced, so far solved that the self-locking in the field of positive coupling of the respective wedge element 16 . 17 with the respective guide plate 9 . 10 dissolves and the relevant wedge element 16 . 17 can be moved. Once it is form-fitting on both sides of the contact surface 31 of the respective support angle 18 . 19 and the contact surface 24 the respective guide plate 9 . 10 sits, the respective fixing screw 14 . 15 tightened again until the respective tension clamp 12 . 13 the required holding force on the rail foot 8th exerts and - concomitantly - the self-locking between the respective wedge element 16 . 17 and the respective guide plate 9 . 10 is restored.

In this way, it is particularly easy to adapt the fastening system 1 to the relative position of the rail 2 and the support angle 18 . 19 be done without adding the system 1 must be disassembled into its individual parts.

1

System for fastening a rail 2

2

rail

3

solid ground 3

4

elastic intermediate plate

5

even surface of the solid ground 3

6

baseplate

7

liner

8th

rail

9 10

guide plates

11

Support surface of the guide plates 9 . 10

11a

Support sections of the guide plates 9 . 10

12 13

clamps

14 15

screw

16 17

key members

18 19

support bracket

20

Contact surface of the wedge elements 16 . 17

21

Contact surface of the support bracket 18 . 19

22

lower contact surface of the wedge elements 16 . 17

23

Top of the wedge elements 16 . 17

24

Bearing surface of the guide plates 9 . 10

25 26

wells

27 28

projections

29

load section

30

marks

31

Support surface of the support bracket 18 . 19

32

Support section of the support bracket 18 . 19

33

Basic section of the support angle 18 . 19

34-36

Stiffening sections of the support bracket 18 . 19

37, 38

Through openings

39

frictional resistance increasing layer

40

Recordings

41 42

elastic rings

43 44

screw

α1, α2

angle

FL

longitudinal forces

FQ

transverse forces

Claims (20)

System for fastening a rail ( 2 ) on a solid surface ( 3 ) with a guide plate ( 9 . 10 ) for laterally supporting the rail to be fastened ( 2 ), with a spring element ( 12 . 13 ), which on the guide plate ( 9 . 10 ) is supported and has at least one spring arm, which has an elastic holding force on the foot ( 8th ) of the rail ( 2 ) and with a clamping device ( 14 . 15 ) for tensioning the spring element ( 12 . 13 ), wherein the guide plate ( 9 . 10 ) in the assembled position with its from the rail ( 2 ) facing away from contact surface ( 24 ) against a support surface ( 31 ) via a wedge element ( 16 . 17 ) is supported, of which the contact surface ( 24 ) of the guide plate ( 9 . 10 ) associated bearing surface ( 20 ) with its support surface ( 31 ) associated bearing surface ( 21 ) includes an acute angle (α1), and that of the guide plate ( 9 . 10 ) associated bearing surface ( 20 ) at least one forward and / or return ( 25 . 27 ), the form-fitting with at least one correspondingly shaped forward and / or return ( 26 . 28 ) can be coupled, which at the respective contact surface ( 20 ) of the wedge element ( 16 . 17 ) associated bearing surface ( 24 ) of the guide plate ( 9 . 10 ), characterized in that the projections and / or recesses ( 25 . 26 . 27 . 28 ) of the mutually associated contact surfaces ( 20 . 24 ) of wedge element ( 16 . 17 ) and guide plate ( 9 . 10 ) in the assembled state of the wedge element ( 16 . 17 ) parallel to the top ( 5 ) of the flat solid ground ( 3 ). System according to claim 1, characterized in that more than one lead and / or return ( 25 . 27 ) on the guide plate ( 9 . 10 ) associated bearing surface ( 20 ) of the wedge element ( 16 . 17 ) is trained. System according to one of the preceding claims, characterized in that the contact surfaces ( 20 . 21 ) of the wedge element ( 16 . 17 ) enclose an angle of 5-15 °. System according to one of the preceding claims, characterized in that on the guide plate ( 9 ) a loading section ( 29 ) is formed in the mounting position on the free top of the wedge element ( 16 . 17 ) rests. System according to one of the preceding claims, characterized in that a base plate ( 6 ) is provided, via which the rail to be fastened ( 2 ) on the firm ground ( 3 ) is supportable. System according to claim 5, characterized in that the base plate ( 6 ) a solid ground ( 3 ) associated footprint and one of the underside of the rail foot ( 8th ) of the rail to be fastened ( 2 ) has associated support surface and that the support surface of the base plate ( 6 ) viewed in cross-section at an angle to the contact surface of the base plate ( 6 ) is inclined. System according to one of the preceding claims, characterized in that on the rail to be fastened ( 2 ) associated side of the guide plate ( 9 . 10 ) is formed a projection which in the assembled state, the base plate ( 6 ) or the rail foot ( 8th ). System according to claim 7, characterized in that an elastic intermediate layer ( 4 ) is provided, on which the base plate ( 6 ), and in the elastic intermediate layer, a recess is formed, in which the projection of the guide plate ( 9 . 10 ) engages in mounting position. System according to one of the preceding claims, characterized in that the solid substrate has a flat surface ( 5 ) and that a support angle ( 18 . 19 ) provided with the solid support ( 3 ) is connectable and a contact surface ( 31 ), against which the guide plate ( 9 . 10 ) on her from the rail foot ( 8th ) facing away from the wedge element ( 16 . 17 ) is supported. System according to claim 9, characterized in that the support angle ( 18 . 19 ) is made of a steel material. System according to claim 9, characterized in that the support angle ( 18 . 19 ) is made of a plastic material. System according to claim 11, characterized in that the support angle ( 18 . 19 ) is made of polyolefin or polyamide. System according to claim 11 or 12, characterized the plastic material contains reinforcing fibers. System according to one of claims 9 to 13, characterized in that in the surface ( 5 ) of the solid ground ( 3 ) associated lower footprint of the support angle ( 18 . 19 ) a rough structure is formed. System according to claim 14, characterized in that that the rough structure is sawtooth-shaped in cross-section. System according to one of claims 14 or 15, characterized in that parallel to the contact surface ( 31 ) extending linear depressions in the contact surface of the support angle ( 18 . 19 ) are formed. System according to one of claims 9 to 16, characterized in that between the footprint of the support angle ( 18 . 19 ) and the surface of the solid ground, the coefficient of friction between contact surface of the support angle ( 18 . 19 ) and surface ( 5 ) of the solid subsoil increasing intermediate layer ( 39 ) is arranged. System according to claim 17, characterized in that the intermediate layer fixed to the footprint of the support angle ( 18 . 19 ) connected is. System according to one of claims 9 to 18, characterized in that the support angle ( 18 . 19 ) a passage opening ( 37 . 38 ) for a fastening screw ( 43 . 44 ) and a tensioning element made of an elastic plastic material ( 41 . 42 ) is provided that in the assembly position through the passage opening ( 37 . 38 ) inserted fastening screw ( 43 . 44 ) with a counter to that of the fixing screw ( 43 . 44 ) exerted clamping force directed restoring force. System according to one of claims 9 to 19, characterized in that at the support angle ( 18 . 19 ) two in the support bracket ( 18 . 19 ) molded through holes ( 37 . 38 ) are formed by the respective one fastening screw ( 43 . 44 ) is pluggable such that the one fastening screw ( 44 ) one from the other fixing screw ( 43 ) Distinctive distance to the contact surface ( 31 ) of the support bracket ( 18 . 19 ) owns.