RU2018117314A - SHELTERED ELASTIC ELEMENT WITH DRY FRICTION DAMPER - Google Patents

Claims (2)

A plate-shaped elastic element with a dry friction damper containing a frame and flat elastic elements, while three elastic elements are axially symmetrically installed in the frame: two elastic plate-shaped elements - upper and lower, and connecting them and located in the middle part of the frame - an elastic element in the form a cylindrical coil spring, while the elastic elements of the disk type are located opposite to the elastic element installed in the middle part of the frame, and each of the elastic elements of the disk type contains two and flat elastic coaxially arranged rings: smaller and larger diameters, interconnected by at least three elastic flat plates, located obliquely with respect to the axis of these rings, and each of the rings of smaller diameter is connected to the corresponding cover by, for example, screws, between which there is an elastic element in the form of a cylindrical coil spring, and each of the rings of larger diameter is connected with the corresponding lower and upper parts of the frame, and the lower part of the frame consists of a base a disk made with a circular inner groove, in which a lower elastic ring of a larger diameter is placed of the lower elastic element of a disk type, and a friction material ring is attached to the lower part of the lower ring to create dry friction, which provides the necessary damping in the system, characterized in that between the base of the spring and the bottom cover, there are three intermediate vibration-damping layers: the first layer is made of dispersed elastic-damping material, in which there may be crumbs are called, for example, of the following materials: rubber, cork, polystyrene foam, kapron, foamed polymer, as well as crumbs of solid vibration-damping materials, such as plastic compound such as Agate, Anti-Vibrate, Shvim, with a size of crumbs fractions of 1.5 ÷ 2 , 5 mm, the second layer is made of knitted elastic synthetic threads, and the size of the cells knitted from elastic synthetic threads is 10-15% less than the size of the fractions of crumbs of vibration damping materials; and the third layer is made of continuous damping material, in which sponge rubber, needle-punched material of the type “Vibrosil” based on silica or alumino-borosilicate fiber, as well as non-woven vibration-damping material, and as a friction material of the ring attached to the lower part of the lower ring, can be used used friction material made of a composition comprising the following components, with their ratio, in wt. %: a mixture of resol and novolac phenol-formaldehyde resins in a ratio of 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 a friction modifier containing carbon black in the form of a mixture with kaolin and silicon dioxide 7 ÷ 15 barite concentrate 20 ÷ 35 talc 1.5 ÷ 3.0