Method to impart cellular relief to running track surface

FIELD: pavings or foundations specially adapted for playgrounds or sports grounds.

SUBSTANCE: running track comprises substrate layers and upper nonslip layer provided with working surface. The working surface is cellular and is created by removal of 1.5-2 mm thickness of granular polyethylene material layer submersed in upper newly laid layer.

EFFECT: increased relief quality and improved track adaptability for athletics.

3 dwg

 

The technical field to which the invention relates.

The invention relates to the construction of sports facilities, in particular to a technology device inlet, elastic polymeric sports surfaces.

The level of technology

Known technology device inlet structures treadmills (for example, sports coverage brand "Rekortan" Germany No. 839981. 14.08.67)that occur sequentially in several layers. figure 1.

- The bottom (base) layer (1), to a thickness of 10 mm is from a polyurethane composition with a rubber filler.

- Intermediate (adhesive) layer (2), of a thickness of 2-2 .5 mm filled polyurethane composition without filler. The main purpose of the intermediate adhesive layer (2) is to tie the upper anti-slip layer (3) with the bottom (base) layer (1).

- Anti-slip top layer (3) is made of flexible polyurethane granulate with a particle size of 2.5-4 mm.

The granulate is applied by mechanical spraying or splashing in hand in the form of granular material across the surface of the fresh intermediate layer (2) and preceives to it, forms a non-slip rough-granular working surface (3) of the treadmill.

This method of forming the anti-grained working surface of the treadmill has a number of significant is not the residue.

Polyurethane granulate is elastic, the granular material obtained by crushing otherdevice colored polyurethane castings.

The fraction of granules applied to the device surface topography of the treadmill ranges from 2.5 to 4.0 mm

All pellets have different three-dimensional form from a tetrahedral to an irregular polyhedra and correspondingly different weight.

When applying granulate (3) sweetalicious adhesive surface of the intermediate layer (2) mechanical plating or by manually spreading the granules in different size and weight fall on the intermediate layer with different speeds at random and haphazard, naturally preceives with different strength. Heavier pellets penetrate deeper into the structure of the intermediate layer and better stick to it, more light is correspondingly worse.

When pushing the effort of the athlete granules, weakly associated with the intermediate layer, can not withstand the dynamic shear loads and off, creating the effect of slippage and loss of the solid support, thereby quenching the intensity of the repulsion, reducing the elasticity of the track and the running speed.

In addition, isolated granules remain arbitrarily to lie on the surface and move freely (ride) under the foot, reducing the contact of the athlete with begovo the track.

For anti-slip devices elevation of the treadmill and athletics stadium sectors requires about 20 tons polyurethane granular powder or hundreds of thousands of pellets. On the strength of gluing each pellet, eventually, directly or indirectly depends on the quality of the treadmill.

Actually polyurethane granulate does not fulfill its design purpose is to create a reliable anti-slip working surface, but on the contrary, is slidably-moving texture.

Thus, the formation of a high quality anti-slip surface bulk relief, the kinematics of the process of gluing and separation of the granules are not amenable to technological regulation and control, which is a significant disadvantage of this design.

These defects of the treadmill does not allow the athlete with maximum efficiency to use efforts, lead to additional costs biophysical energy and negatively affect athletic performance.

In addition, the high price of polyurethane granulate (25-30% of the cost of the treadmill) lead to a significant rise in the cost of construction, which is not economically efficient.

Disclosure of inventions

The aim of the invention is to improve sports performance treadmill with simultaneous cost reduction is stroitelstva.

This goal is achieved by the fact that in the known construction treadmill comprising a base layer, an intermediate layer and an upper anti-slip layer made of bulk surface relief; the proposed construction of the upper anti-slip layer formed of structural cellular terrain".

The invention is illustrated in figure 2.

- The bottom (base) layer (1) to a thickness of 10 mm is from a polyurethane composition with a rubber filler.

- The top layer (4) thickness of 2-2 .5 mm are made of polyurethane composition without filler, with the structure of the anti-slip cellular topography of the surface (4A).

The proposed design eliminates the use of expensive polyurethane granulate and to form a high-quality anti-slip cellular topography" of the working surface of the treadmill.

The implementation of the invention

For devices "cellular terrain" can be used secondary granulated polyethylene (HDPE) fraction of 3-3,5 mm

Granular polyethylene in this technology is a subsidiary of the molding material reuse.

Unlike polyurethane granulate, the design purpose of granulated polyethylene opposite - not glued.

In the proposed with the person used a weak adhesive interaction at the interface "polyurethane composition - polyethylene".

Implementation of the invention is carried out sequentially in three steps. figure 3.

On the bottom (base) layer (1) self-leveling method of a thickness of 2-2,5 mm put the top layer (4)consisting of a polyurethane composition without filler.

On fresh (at the stage of fluidity) of the upper layer (4) mechanically or manually scatter in the form of a granular material granular polyethylene (5)that is immersed in a natural way into the top layer of 1.5-2.0 mm, violates his equal (front) surface and forms an anti-slip relief (4A).

After curing of the top layer, but not earlier than 24 hours, polyethylene granulate (5) remove the opening formed anti-slip cellular topography" of the working surface (4A) figure 2.

In contrast to known constructions, where the weak spot - bulk (surface) anti-slip layer, the proposed construction of "cell relief" is an integral monolithic structural element of the treadmill. Itself the honeycomb structure of the upper layer is ready the anti-skid relief.

Therefore, completely eliminated the bulk (surface) rough-granular layer, with the negative trend of mobility and separation of the granules. In the cellular structure is absolutely nothing off that will create a reliable, prohodyaschuyu support under tion and improve the contact interaction of the athlete with a treadmill.

In the honeycomb structures of the upper and lower layers simultaneously, as a single elastic system, the resonant helping the athlete to maintain a high running speed.

When the calculation results in modern sport is thousandths of a second, cell design will make the treadmill more "fast" and will create new conditions for high sporting achievements in athletics.

In addition, "cell relief" allows you to completely abandon the use of expensive color polyurethane powder, which significantly reduces the cost of the device treadmill.

Thus, the technical and economic efficiency of the proposed method is quite obvious and is determined to improve sport-speed characteristics of the treadmill while reducing the cost of construction.

"Cellular terrain track and field creates excellent conditions for training and competitions of any level, will make sport enjoyable and rewarding leisure.

Athletics track, including the preparatory layers and the upper anti-slip layer with a relief surface, wherein the relief work surface made cell and has a shape formed by removing immersed in fresh top layer on g is obino 1.5-2 mm granulated polyethylene.



 

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