RU2015131900A - DRY FRICTION DAMPER BUILT INTO A SPRING VIBRATION INSULATOR - Google Patents

Claims (7)

1. A dry friction damper comprising a lower and an upper support plate, between which an outer with a right angle of elevation of the coils and an inner with a left angle of elevation of the coils of the spring are coaxially and concentrically mounted, wherein the lower support plate is the base on which the lower flanges of the springs are fixed and between the upper support plate and the upper flange of the internal spring with a left angle of elevation of the coils is a dry friction damper, consisting of two lower and upper cylindrical disks in contact with each other c, wherein the lower disk is rigidly connected to the upper flange of the internal spring, and the upper disk is rigidly connected to the upper support plate, characterized in that the upper cylindrical disk of the dry friction damper is made of steel, and the lower cylindrical disk is made of friction material made of the composition including the following components, with their ratio, wt. %: A mixture of resol and novolac phenol-formaldehyde pitches in the ratio 1: (0.2-1.0) 28 ÷ 34 Fibrous mineral filler containing glass roving or a mixture of glass roving and basalt fiber in a ratio of 1: (0.1-1.0) 12 ÷ 19 Graphite 7 ÷ 18 Carbon black friction modifier in the form of a mixture with kaolin and silicon dioxide 7 ÷ 15 Barite Concentrate 20 ÷ 35 Talc 1.5 ÷ 3.0 2. Dry friction damper according to claim 1, characterized in that the materials of the lower and upper cylindrical disks of the dry friction damper can be steel, a rigid vibration damping material, for example, Agate type, the above friction material, as well as various combinations of these materials in a pair of dry friction damper. 3. Dry friction damper according to claim 1, characterized in that concentric diametrical grooves on one of the disks and protrusions on the other disk that enter into each other are made on the surfaces of the cylindrical disks of the dry friction damper facing each other. 4. The dry friction damper according to claim 1, characterized in that concentric axisymmetric spherical surfaces are made on the surfaces of the cylindrical dry friction damper disks facing each other: a protrusion on one of the disks and a depression on the other disk. 5. The dry friction damper according to claim 1, characterized in that sintered friction material based on copper containing zinc, iron, lead, graphite, vermiculite, copper, chromium can be used as materials for the lower and upper cylindrical disks of the dry friction damper antimony and silicon, in the following ratio of components, wt. %: Zinc 6.0 ÷ 8.0 Iron 0.1 ÷ 0.2 Lead 2.0 ÷ 4.0 Graphite 3.0 ÷ 7.0 Vermiculite 8.0 ÷ 12.0 Chromium 4.0 ÷ 6.0 Antimony 0.05 ÷ 0.1 Silicon 2.0 ÷ 3.0 Copper Rest