EP2742183A2

EP2742183A2 - Sliding plate and sliding plate system for a ski-jump facility

Info

Publication number: EP2742183A2
Application number: EP12768701.0A
Authority: EP
Inventors: Peter Riedel
Original assignee: Peter Riedel Patent UG Haftungsbeschraenkt
Current assignee: Peter Riedel Patent UG Haftungsbeschraenkt
Priority date: 2011-08-12
Filing date: 2012-08-01
Publication date: 2014-06-18
Anticipated expiration: 2032-08-01
Also published as: DE102011052662C5; WO2013023648A3; WO2013023648A2; EP2742183B1; DE102011052662B3

Abstract

The invention relates to a sliding plate for a ski-jump facility, comprising the following features: a plate-shaped element (1) having an upper face that has sliding knob receptacles (11) which comprise sliding knob openings arranged in the plate-shaped element (1) and extending through the plate-shaped element (1); a plurality of sliding knobs (2) that are arranged in the sliding knob receptacles (11) in such a way that the sliding knobs (2) project out of the plate-shaped element (1); and spring means (3) that are designed in such a way that said spring means exert a restoring force on a relative movement between the sliding knobs (2) and the plate-shaped element (1). According to the invention, the spring means (3) are arranged between sliding knob spring sections (20) of the sliding knobs (2) and plate spring sections (10) of the plate-shaped element (1).

Description

Title:

Sliding plate and sliding plate system for a ski jumping system Description:

The invention relates to a sliding plate for a ski jumping facility. Furthermore, the invention relates to a sliding plate system with such a sliding plate. Sliding plates for ski jumping equipment have been known for a long time. These are usually used when operating ski jumping equipment in temperature ranges well above 0 ° C. A corresponding number of such coupled sliding plates form a start-up track and allow a

Jump training without having the inrun track iced up.

Such a sliding plate for a ski jumping system has at least the following two features:

• a plate-shaped element with a top with

Gleitnoppenaufnahmen, arranged in the plate-shaped element Gleitnoppenöffnungen that extend through the plate-shaped element (1) and through

A plurality of sliding nubs, which are arranged in the Gleitnoppenaufnahmen that the sliding nubs protrude from the plate-shaped element.

For the plate-shaped element different materials come into question. Metals and their alloys offer high bending stiffness. These are particularly in the end of the hill advantage because there the

Force load is increased by the jump. Polymer plate can be produced, for example, as injection-molded parts very inexpensively and yet sufficiently precise. A known from the prior art sliding plate with a made of plastic plate-shaped element and Gleitnoppen porcelain was available at least in the 1990s under the brand name SNOWTILE ™ in the US market. The related protected US design patent with the inventor Mike Holland is registered under the publication number US-D-351886. A disadvantage of this sliding plate is that the sliding nubs do not allow any substantial relative movement between nubs and plate-shaped element. In this respect, the functionality of a suspension between these two components is not given.

Furthermore, from DE 102 33 467 a generic sliding plate is known, which has in addition to the above-mentioned features suspension means in the form of a limited elastic pad under Gleitnoppen. This spring means is designed such that it fits on a

Relative movement between the sliding knobs and the plate-shaped element exerts a restoring force. This feels the inrun track for the

Skispringer "softer", so that the sliding behavior of the inrun track is improved overall.Horn on this sliding plate, however, is that the known structural

Arrangement of the suspension means represents a constructional limitation in terms of additional functionalities.

Object of the present invention is therefore to provide a sliding plate, which overcomes the disadvantages mentioned.

This object is achieved by a sliding plate with the features of claim 1. According to the invention it is provided that the suspension means between

Gleitnoppenfederungsabschnitten the Gleitnoppen and

Plate suspension portions of the plate-shaped member are arranged. This arrangement of the suspension means, it is possible to provide a sufficient suspension functionality and at the same time to realize the highest possible design freedom for the integration of other functionalities. Finally, the elastic deformation of the spring means takes place in the region between the sliding nub and the plate-shaped element. In this case, the relative movement to the spring means mechanically further giving sections of Gleitnoppe are referred to as Gleitnoppenfederungsabschnitte. By the spring means, the deformation force is absorbed at the plate suspension portions of the plate-like element. For the spatial arrangement of these suspension sections and the suspension means, there are different variants, which are discussed in more detail below.

A particularly space-saving preferred construction is that the plate-spring portions within the Gleitnoppenöffnungen and / or adjacent to the Gleitnoppenöffnungen in the surface contour of the

Gleitnoppenaufnahmen are formed. As a result, in particular the space below the Gleitnoppen remain free.

For the foregoing construction, it is further advantageous that the plate spring portions extend transversely to the slide stud openings. Usually, the slide stud openings in the plate-shaped element extend along an extension axis. With the feature transverse to the sliding nub openings is then corresponding to transverse to the extension axis of Gleitnoppenöffnung meant. A special case for this arrangement of

Plate spring portions is that they extend at right angles to Gleitnoppenöffnung. However, the feature transverse is not construed to be limited to rectangular.

For the above-described construction of the sliding plate, it is also advantageous that the plate spring portions enclose the Gleitnoppenöffnungen on the upper side of the plate-shaped element and / or on the upper side opposite the underside of the plate-shaped element. The enclosing arrangement results in a uniform recording and initiation of the force acting on the Gleitnoppe force in the plate-shaped element.

Regardless of the construction described above, it is advantageous that the sliding nubs have releasable fastening means by means of which the sliding nubs are fixed in the sliding nub openings. In this way, damaged or worn Gleitnoppen easier to replace.

In the variant to form the sliding nubs with releasable fastening means, it is advantageous that the spring means extend in areas between the fastening means and the plate-shaped element. The

Gleitnoppenfederungsabschnitte are in this preferred

Embodiment usually on the fastening means forming part of Gleitnoppe.

It is advantageous if the Gleitnoppenfederungsabschnitte extend transversely to the Gleitnoppenöffnungen. This arrangement of

Gleitnoppenfederungsabschnitte usually implies the corresponding transverse arrangement of the corresponding plate suspension sections.

The suspension means preferably comprise a polymer element in the form of a polymer adhesive, a polymer O-ring or a polymer piece. An adhesive has the advantage to flow into the existing geometry and to be able to absorb tensile stresses. O-rings are inexpensive and easily available with the desired elasticity properties. A polymer piece, for example in the form of a small wedge or block, represents a simple variant for the formation of the spring means. As further variants, metallic spring elements or natural materials would also be conceivable. All variants have in common is that the desired elasticity and

Long-term stability properties over a fairly wide temperature range of -40 ° C to +60 ° C should be ensured. Corresponding polymers and polymer adhesives are readily available on the market. For all of the variants of the sliding plate described above, it is preferred that the sliding knobs are made of natural stone (very hard natural stone such as granites and basalts because of the abrasion resistance) or of ceramic, preferably of porcelain or of an oxide ceramic are. Ceramics, in particular

Porcelain, with tolerances just under a millimeter

produce economically. A particularly advantageous variant consists of producing the sliding knobs made of aluminum oxide without surface glaze. This material absorbs water to a certain extent and makes it available on its surface. Since the Gleitnoppen usually in

Jump operation are washed over with a water film, this property contributes to even better sliding properties. Basically, all material-technical advantages of this material with regard to its durable weathering and abrasion resistance in the sliding plate can be realized by the use of ceramics.

For all variants of the sliding plate described above, it is

advantageous in that the plate-shaped element extends along a starting direction and has a concavely curved surface viewed in cross-section along this starting direction. This curvature causes a

Outflow of the liquid film flowing over the sliding plate in the direction of the center of the sliding plate.

As already mentioned above, skid plates for jump operation are regularly washed over with a water film in order to optimize the start-up properties of the track and to remove the frictional heat. For this purpose, preferably water outlet nozzles are formed on the surface of the plate-shaped element, the underside of a water pipe a

Have the track irrigation system connected.

For all variants of the sliding plate described above, it is preferably provided that in the sliding plate a cooling device and / or a

Spurbewässerungseinrichtung are arranged. The integration of this Functionalities of a laminar sandwich sliding plate realize a very compact system. This is particularly advantageous in connection with the cooling device, because overall a structure with reduced compared to systems of the prior art heat capacity

provided. If the sliding plates are to be frozen over with ice, then this is possible faster and / or with less energy expenditure with lower heat capacity of the sliding plate.

All sliding plates have, viewed along their direction of extension, coupling devices on both ends, which make it possible to link a plurality of sliding plates to an inrun track. Depending on the embodiment of the sliding plate, the coupling devices must have connection possibilities for the cooling device and / or the track irrigation device and / or the measuring technology described below. The coupling device in each case comprises sealing means, so that the sliding plate water running down not coupled at the transition areas between two

Slide plates out of the track.

Another preferred variant of the sliding plate provides that in the

Sliding plate is arranged a sensor device for measuring the forces occurring on the sliding plate and / or on the Gleitnoppen. This represents a further integration of additional functions in the sliding plate itself. The sensor system used is designed to be robust in accordance with the conditions of use. These can be, for example, piezoelectric and / or opto-electronic sensor devices which enable a time-resolved measurement of the forces occurring. For modern competitive sports on the

Ski jumps it is essential to be able to fall back during the training and tournaments on a precise evaluation of the athlete performance.

Furthermore, the invention relates to a sliding plate system for a ski jumping system comprising a plurality of sliding plates according to the

previous versions. This plurality of sliding plates serves as already described, for the formation of two ski start-up tracks. Furthermore, the sliding plate system comprises a mounting structure in which the

Insert sliding plates between two sliding edges in such a way and allow them to be coupled together so that below the sliding plates a track space with a height of more than one centimeter remains free. Due to the fact that all necessary functionalities for modern skiing can be integrated into the sliding plate, it is possible to limit the functionality of the mounting structure largely to the mechanical supporting and holding function of the sliding plates. All other systems assembled as desired, which give the inrun track their functionality, are structurally combined in the sliding plate. As a result, the inrun track off the ski jump itself can be built from the slide plates and their desired

Check functionality before mounting on the hill. The sliding plate according to the invention is suitable for the construction of a

Sliding system as a combined single-summer winter track system or as a pure summer track in a double track system. In the double track system, it is advantageous to nest the summer and winter tracks in a familiar manner.

The mounting structure of the Gleitplattensystems has advantageously arranged in such a way and controlled by compressed air compressed air nozzles that these blow on the sliding plates falling rain and / or snow blow away from the sliding plate.

Further characteristics and advantages of the invention will become apparent in connection with the following description of some preferred embodiments. It shows:

Figure 1 is a plan view of a first embodiment of a sliding plate; FIG. 2 shows a section through the sliding plate according to FIG. 1 along the in FIG

Figure 1 drawn line II-II;

Figure 3 is an enlarged view of the longitudinal section through a

Gleitnoppe the sliding plate of Figure 2;

Figure 4 is a plan view of a second embodiment of a sliding plate; FIG. 5 shows a section through the sliding plate according to FIG. 4 along the in FIG

Figure 4 drawn line V-V;

Figure 6 is an enlarged view of the longitudinal section through a

Gleitnoppe the sliding plate of Figure 5;

7 shows a longitudinal section through a third embodiment of a

Gleitnoppe,

8 shows a longitudinal section through a fourth embodiment of a

Gleitnoppe and

Figure 9 is a schematic cross-sectional view through a

Sliding plate system with a built-in sliding plate.

Figure 1 shows a plan view of a first embodiment of a sliding plate comprising a plate-shaped element 1 with a plurality of

Gleitnoppen 2. The plate-shaped element 1 has a rectangular basic shape is significantly longer than wide and extends along a contact direction A. From the surface of the plate-shaped element 1 protrudes the plurality of identically formed Gleitnoppen 2 with spherical nub surface out. These sliding nubs 2 are each arranged in slide knob receptacles 11, which have openings which extend through the plate-shaped element 1. Viewed along the starting direction A, the sliding nubs 2 are arranged in pairs next to each other. The distance between each pair of sliding nubs 2 varies, the distance between the

Gleitnoppenpaaren considered along the start-up direction A is constant.

The plate-shaped element 1 is made of plastic and / or metal or a metal alloy. In particular, in the production of plastic is advantageous to form stiffening ribs 13 in one piece in the plate-shaped element 1, to the bending stiffness of the plate-shaped element 1 to increase. Viewed along the starting direction A, each plate-shaped element 1 has at its front and rear edge a coupling device 14. This coupling device 14 is formed as a mechanically acting engagement edge and serves to couple the plate-shaped element 1 with another, adjacent plate-shaped element. In this way can be made of a variety coupled with each other plate-shaped

Elements 1 form a start-up track for a ski jumping facility. To realize this, each plate-shaped element 1 has a suitable one

Coupling device on and / or in addition to the plate-shaped

Elements with their coupling means separate coupling elements are provided which cooperate with the coupling means of the plate-like elements.

At least the spherical surface of Gleitnoppen 2 is preferably made

Natural stone or formed from a ceramic. The construction of the sliding nubs 2 and their arrangement in the Gleitnoppenaufnahmen 11 of the plate-shaped element 1 will be explained in more detail in connection with the figures described below. Figure 2 shows a section through the sliding plate according to Figure 1 along the drawn in Figure 1 line II-II. The convex surface of the in the

Gleitnoppenaufnahmen 11 of the plate-shaped element 1 arranged Gleitnoppen 2 protrudes over the surface of the plate-shaped

Elements 1 out. The section runs through the sliding knob 2 shown on the left. This sliding knob 2 has a hat-shaped longitudinal sectional contour and is shown enlarged in FIG.

The Gleitnoppenaufnahme 11 has an opening in the plate-shaped element 1, from which protrudes the spherical surface of Gleitnoppe 2. The

Gleitnoppe 2 has integrally formed around its spherical surface around a knobbed collar. The Gleitnoppenaufnahme 11 has adjacent to the opening in the plate-shaped element 1 has a stepped surface contour with Plattenfederungsabschnitten 10. This step-shaped Surface contour is to the plate-shaped element 1 facing surfaces of the dimpled collar with corresponding

Gleitnoppenfederungsabschnitten 20 adapted. This can be any

Gleitnoppe 2 of this first embodiment by means of a

Suspension means 3 in the form of a polymer adhesive in the

Fix Gleitnoppenaufnahmen 11 of the plate-shaped element 1. The polymer adhesive 3 not only assumes the function, a

Relative movement between the Gleitnoppe 2 and the plate-shaped

To dampen element 1 elastically resilient. Furthermore, the polymer adhesive 3 contributes to secure the sliding knob 2 in the plate-shaped element 1. The polymer adhesive 3 preferably extends everywhere between the

Surface contour of the knobbed collar and the adjacent thereto

Surface contour of the sliding knob receptacle 11. The areas of the

Gleitnoppenaufnahme 11, which are mechanically in contact with the spring means 3 are referred to as plate spring portions 10. Accordingly, the designation of Gleitnoppenfederungsabschnitte 20 applies to those surface areas of Gleitnoppe 2, with the here as

Polymer adhesive formed spring means 3 are in contact. Force is exerted on the convex surfaces of the sliding nubs 2 via the ski of a skijumper sliding over the sliding plate. The

Gleitnoppenfederungsabschnitte 20 bring this force as a tensile force in the spring means 3, which pass this force on the plate spring portions 10 in the plate-shaped element 1. FIG. 4 shows a plan view of a second embodiment of a sliding plate. The plate-shaped element 1 of this second embodiment corresponds to the surface contour of Gleitnoppenaufnahmen 11 and some details regarding the formation of the stiffening ribs 13, the plate-shaped element 1 of Figure 1. To avoid repetition, reference is made to the comments on Figure 1, these apply accordingly this second embodiment. In the following, the differences compared with the first embodiment will be mainly discussed. FIG. 5 shows a section through the sliding plate according to FIG. 4 along the line VV drawn in FIG. The leftmost longitudinally shown Gleitnoppe 2 is shown enlarged in Figure 6. The same components are provided with the same reference numerals and the foregoing statements for the same structures and functionalities therefore apply accordingly. Unlike the Gleitnoppe the first embodiment, this Gleitnoppe 2 releasable fastening means in the form of a screw 21. This screw 21 fixes the Gleitnoppe 2 from the bottom of the plate-shaped member 1 through the opening of Gleitnoppenaufnahme 11 through the plate-shaped element 1. Between the screw 21 and the plate-shaped element 1, a spring means in the form of a polymer adhesive 3 is arranged. The contact areas of the polymer adhesive 3 with the screw provide the

Slide knob suspension portions 20; the contact areas between the polymer adhesive 3 and the plate-shaped element 1 the

Plate spring portions 10. The sliding knob 2 has a screw 21 matching thread 22 which is fixed in the knob body of Gleitnoppe 2.

In the area of the top of the plate-shaped element 1, the

Gleitnoppenaufnahme 11 a stepped contour corresponding to the stepped contour of Gleitnoppe 2 in this area. Between Gleitnoppe 2 and the plate-shaped element 1 extends a narrow gap S. The flexible over the polymer adhesive 3 suspension of Gleitnoppe 2 allows flexible compression of Gleitnoppenkörpers in the direction of the plate-shaped element 1. This compression can, depending on the load direction evenly from above or else also run diagonally tilting. When tilting compression, the step-shaped contour of Gleitnoppenkörpers is based on the closing of the gap S on the plate-shaped element 1 from. This support prevents the forces occurring alone from the screw 21 must be taken as a releasable fixative.

FIG. 7 shows a longitudinal section through a third embodiment of a slide nub 2. This third embodiment largely resembles the second variant shown in FIG. Same components are therefore the same Reference numerals provided and the foregoing for the same structures and functionalities apply accordingly. Unlike the Gleitnoppe the second embodiment of Figure 6, this Gleitnoppe 2 spring means in the form of a polymer O-ring 3, which in the

Gleitnoppenaufnahme 11 is disposed on the upper side of the plate-shaped element 1. If the Gleitnoppe 2 loaded from above, so compresses this force the polymer O-ring 3 and the gap S between

Gleitnoppenkörper and the receiving structures of Gleitnoppenaufnahmen 11 is smaller. The properties of the used polymer O-ring 3 and its adjustable via the screw 21 preload determine the

Suspension properties of Gleitnoppen 2 in the plate-shaped element 1 of the sliding plate.

Finally, FIG. 8 shows a longitudinal section through a fourth embodiment of a slide nub. This fourth variant is similar to the first embodiment of Figure 3. The same components are therefore provided with the same reference numerals and the statements made for Figure 1 for the same structures and

Functionalities apply accordingly. Unlike the Gleitnoppe the first embodiment of Figure 6, this Gleitnoppe 2 has a mushroom-shaped

Longitudinal contour on. The convex upper side of the Gleitnoppenkörpers cantilevers at their outer edges in each case inwardly, so that the mushroom-shaped contour is formed. The surface contour of Gleitnoppenaufnahme 11 in turn follows the contour of Gleitnoppe. As a result, the inwardly cantilevered regions of Gleitnoppe 2 can be supported as Gleitnoppenfederungsabschnitte 20 via the again designed as a polymer adhesive 3 spring means. A force acting on the top of Gleitnoppe 2 force is then on plate suspension portions 10 in the plate-shaped element 1 of

Sliding plate initiated. All the preceding variants of the sliding plates are suitable for building up a starting track in a ski jumping facility. This will be a variety of

Sliding along the approach direction A via the coupling means 1 of the sliding plates connected together and form together with a Mounting structure 4 a sliding plate system, as determined by a

schematic is not true to scale cross-sectional view in Figure 9 illustrates. The sliding plate shown in cross-section has a

plate-shaped element 1, on the upper side protrudes a plurality of Gleitnoppen 2. In particular, below the sliding nubs 2 sensor devices 17 may be arranged, which in turn rest on sensor supports 42 of the mounting structure 4. The sliding plate has a sandwich-like construction. The uppermost layer represents the visible external view of the sliding plate with the plate-shaped element 1, which is penetrated by the sliding nubs 2 and the water outlet nozzles 12. The cooling device 16, illustrated here in the form of individual lines, is illustrated by way of example in the layer of the sliding plate, which is not visible from the outside. Furthermore

Sensor means 17 and a track irrigation device 18 for the water outlet nozzles for the track irrigation arranged. The in cross-section a concave curvature sliding plate is supported with their

Outside edges each on a sliding edge 40 of the mounting structure 4 from.

Depending on the concave curvature and the extent of the sliding edges 40 a space 5 of more than one centimeter height remains free under the slide plate. Thanks to this design, the sliding plate combines all the required functionalities in one component, which is easily replaceable and can be set up and tested away from the ski jumping system.

LIST OF REFERENCE NUMBERS

1 plate-shaped element

10 plate suspension sections

11 slide pin holders

12 water outlet nozzles

13 stiffening ribs

14 coupling device

16 cooling device

17 sensor device

18 track irrigation device

2 sliding nubs

20 Gleitnoppenfederungsabschnitte

21 releasable fasteners

22 threads

3 spring means

4 mounting structure

40 sliding edges

41 compressed air nozzles

42 sensor supports

5 track space

A start-up direction of the sliding plate S gap

Claims

claims:

1. sliding plate for a ski jumping system comprising the following features:

• a plate-shaped element (1) with a top with

Slide-knob receptacles (11) having slide-knob openings disposed in the plate-shaped member (1) and passing through the plate-shaped member (1);

• A plurality Gleitnoppen (2), the so in the

Gleitnoppenaufnahmen (11) are arranged, that the sliding knobs (2) protrude from the plate-shaped element (1) and

• Bearing means (3) which are formed such that these on a relative movement between the Gleitnoppen (2) and the

plate-shaped element (1) exert a restoring force,

characterized in that

the spring means (3) between Gleitnoppenfederungsabschnitte (20) of Gleitnoppen (2) and plate spring portions (10) of

plate-shaped element (1) are arranged.

2. sliding plate according to claim 1, characterized in that the

Plate spring portions (10) within the slide knob openings and / or adjacent the slide knob openings in the slide head openings

Surface contour of Gleitnoppenaufnahmen (11) are formed.

Sliding plate according to claim 2, characterized in that the plate-springing portions (10) extend transversely of the slide-nub openings.

4. sliding plate according to claim 3, characterized in that the

Plate spring portions (10) the Gleitnoppenöffnungen on the upper side of the plate-shaped element (1) and / or on the top opposite bottom of the plate-shaped

Enclose elements (1).

5. Sliding plate according to one of the preceding claims, characterized in that the sliding nubs (2) releasable fastening means (21) by means of which the sliding nubs (2) are fixed in the Gleitnoppenöffnungen.

6. sliding plate according to claim 5, characterized in that the

Spring means (3) extend into areas between the fastening means (21) and the plate-shaped element (1).

7. sliding plate according to one of the preceding claims, characterized

characterized in that the Gleitnoppenfederungsabschnitte (20) extend transversely to the Gleitnoppenöffnungen.

8. sliding plate according to one of the preceding claims, characterized

in that the spring means (3) comprise a polymer element in the form of a polymer adhesive, a polymer O-ring or a polymer piece.

9. sliding plate according to one of the preceding claims, characterized

characterized in that the sliding nubs (2) are constructed at least on their surface of natural stone or ceramic, preferably of porcelain or of an oxide ceramic.

10. Sliding plate according to one of the preceding claims, characterized

in that the plate-shaped element (1) extends along a contact direction (A) and along this contact direction in the

Viewed cross-section has a concave curved surface.

11. Sliding plate according to one of the preceding claims, characterized

characterized in that on the surface of the plate-shaped element (1) water outlet nozzles (12) are formed, which can be connected to the underside of a water pipe track irrigation device.

12. Sliding plate according to one of the preceding claims, characterized in that in the sliding plate, a cooling device (16) and / or a track irrigation device (18) are arranged.

13. sliding plate according to one of the preceding claims, characterized

in that a sensor device (17) for measuring the forces occurring on the slide plate and / or on the sliding knobs (2) is arranged in the slide plate.

14. having sliding plate system for a ski jumping facility

- A plurality of sliding plates according to one of the preceding

Claims for the formation of two ski start tracks,

- A mounting structure (4), in which the sliding plates between two sliding edges (40) insert in such a way and can be coupled together that below the sliding plates, a track space (5) with a height of more than one centimeter remains free.

15. sliding plate system according to claim 14, characterized in that the mounting structure arranged in such a way and controlled by compressed air compressed air nozzles (41), that these blow on the sliding plates rain and / or snow blow away from the sliding plate.