| 摘要 |
FIELD: personal use articles.SUBSTANCE: vibration protection footwear containing a sole and a top as well as a tight cavity positioned in the footwear lower part, enclosing the foot and equipped with a resilient element; a resilient tight shell filled with silicone liquid is positioned between the sole and the top; positioned under the shell is an insole made of "Vibrosil" type needle-punched material based on siliceous or aluminium-boric-silica fibre coated with industrial textile; the sole may be made of a vibration absorbing material such as an elastomer or polyurethane with a porosity degree within the range of optimal values equal to 30÷45%; mounted inside the hell is a string vibration protection system consisting of a guiding cup made of a hard vibration damping material such as Agat, Antivibrit, Shwim type plasticate and positioned inside the heel with a cylindrical helical spring designed to carry the operator's body weight falling on each leg positioned inside the cup axially symmetrical to it. On the open part side, there is a ring flanging coaxial to the cup axis whereon a resilient ring is attached functioning as a resilient arrester of the moving part of the resilient tight shell that is glue-connected to a plate made of a hard vibration damping material such as Agat, Antivibrit, Shwim type plasticate on the side turned towards the spring, the plate serving to prevent loss of tightness of the tight resilient shell filled with silicone liquid; there is a protective insert rigidly connected to the guiding cup in its middle part, the plate made of a material that is harder as compared to the sole and resilient and functions as an additional resilient element in the vibration protection system "footwear-human"; positioned between the protective insert and the "footwear foot" part, a resilient tight shell filled with silicone liquid, is a resilient mesh element placed into a protective shell such as one made of rubber-cord or cast polyurethane; the density of the mesh structure of the resilient mesh elements is within the range of optimal values equal to 1.2 g/cm? 2.0 g/cm; the resilient mesh elements wire is made of Grade EI-708 steel, such wire diameter varying with the optimal range of values of 0.09 mm ? 0.15 mm; the resilient mesh elements may be: reinforced and made of a mesh framework poured over with elastomer such as polyurethane; made of elements in the form of a layered or crosswise winding of porous threads wound onto a cylindrical wire or mesh framework; made of crumb of hard vibration damping material such as Agat, Antivibrit, Shwim type plasticate with crumb size equal to 0.5?2.0 mm, poured over with elastomer such as polyurethane into a protective shell; the helical spring positioned axially symmetrical to the guiding cup in the heel is conic-shaped.EFFECT: increased efficiency of the operator's vibration protection due to equal frequency of the conic spring in the heel.1 dwg |
