SU973685A1 - Paving - Google Patents

Description

(54) COATING

one

The invention relates to the construction, in particular to the construction of coatings for treadmills for trotting tests of horses at racecourses.

Existing racetracks for trotting horses are mainly covered with natural ground. Under the conditions of the spring-autumn thaw, such paths are soaked and become unsuitable for testing Q-Research Institute of horses.

Known coating for athletics tracks, having a cruel base and pririgii upper layer i

This coating is characterized by an inadequate durability and wear resistance, which is necessary for racetracks.

Closest to the present invention is a coating comprising a resilient layer placed on a rigid base made of rubber material on which the bulk material is distributed. Elastic

The layer of such a coating is made of rubber-cord fabric.f2J.

However, such a coating does not provide sufficient resilience and stability under different weather conditions for use as a racetrack as a treadmill.

The purpose of the invention is to increase the elasticity and stability of the condition of the coating under different weather conditions for use as a racetrack.

Claims (2)

The goal is achieved by the fact that in a coating that includes an elastic layer of rubber material placed on a rigid base, on which the bulk material is distributed, a layer of rubber material is filled in the form of strips of rubber-roll material placed across the track and attached longitudinal rubber elements to them , and limestone coatings with О-5 mm fractions were used as a material. In Fig. 1, of the design of the treadmill structure, the slit; in fig. 2 - the same in terms of. The coating includes races cheap on a rigid base 1 elastic layer 2, made in the form of strips 3 of rubber rolled material with a thickness of 1.52 we are stacked across the treadmill attached to them from above in a staggered order through an adhesive layer of 4 rubber, longitudinal, rectangular elements 5, and the bulk material 6 distributed over the elements 5, which used limestone seedings of fractions O-5, mm, 20 m thick. The rigid base 1, which meets the requirements of existing standards, consists of a landbed 7, Layer 8, layer 9 fractions of 40 + 70 mm, layer of black rubble 10 and two-layer hot asphalt concrete 11. To create the necessary elastic properties, the thickness of the rubber elements 5 must be at least 2 Om and their working surface has a square-shaped relief with a depth of 5-8 mm. The physicomechanical properties of the rubber composition for the manufacture of S elements must correspond to the following indicators: Shore hardness, y.e., 35-45. cm 5-15 residual deformation,%, not more ee3 strength; at break, kgf / cm, at less than 20-55 Absorption after 24 hours,%, not more than .1,0 Cover construction of a treadmill, assembled from transverse strips 3 of rubber rolled material attached to them from above in a checkerboard pattern through an adhesive layer4 Resin, longitudinal rectangular elements 5 and bulk material 6 distributed over elements 5, which used limestone fragments of 0-5 mm thick with a thickness of 2 mm, is a self-compensating system that works as one piece, providing the best possible elasticity of the treadmill, maintaining the technical characteristics under different weather conditions, year-round training courses and a significant reduction in the cost of keeping the treadmill during its operation. As a result of experimental tests, it was found that, in contrast to natural sand, particles of limestone seeding have a non-rolled form, have a higher coefficient of internal friction, which makes the shear stability of the upper layer of coatings. A layer of limestone seedings is capable of self-sealing, retaining about & tsuyu optimal elasticity of the treadmill - 500-600 kgf / cm, and thus does not underestimate the agile performance of trotting horses. Claims of the Invention A coating comprising an elastic layer of a rubber megerial placed on a rigid base, and which is distributed by a flowing meterial, characterized in that, in order to improve the elasticity and stability of the coating condition under different weather conditions for use as a racetrack of hippodromes, a layer of rubber material is made in the form of strips of rolled rubber material placed across the track and the longitudinal rubber elements attached to them from above, and used as a bulk material Limestone seedings with fractions O-5mm are used. Sources of information taken into account in the examination, 1. USSR Author's Certificate No. 590394, cl. E 01 C 13 / OO, 1976. 2. USSR author's certificate K 540953, cl. E 01 C 5 / O8, 1974. yx: x, 7s v: xj4 / riexjvy jwTtxjs / fg A l L, A A A A A D A O A /  0g / S -5 "J r / - / 7 Y Y T Y Y T "-I S L. I I I I I I I I I I I I 1 I I I I I I I F (g.2