RU2325566C1 - Rubber-cord casing for highly elastic coupling - Google Patents

Abstract

FIELD: mechanics.

SUBSTANCE: rubber-cord casing for highly elastic coupling has sidewalls for attachment to coupling halves and is made of rubber with reinforced criss-crossed layers of cord, enwrapping the side rings. Configuration of torous-shaped rubber-cord casing is defined by single radius in mean cross sectional diameter. Radii, profile linear dimensions, bore diameter, which define the rubber-cord casing scross section, relate to the outer diameter as follows: R1:D1=0.11±20%; R2:D1=0.08±20%; R3:D1=0.025±20%; R4:D1=0.015±20%; H1:D1=0.263±20%; H2:D1=0.163±20%; D2:D1=0.71±20%, where R1 - section outer radius, R2 - section inner radius, R3 - sidewall radius, R4 - fillet radius between outer radius R1 and sidewall radius R3, D1 - outer diameter of the rubber-cord casing, D2 - bore diameter of the casing, H1 - width of the casing cross-section profile, H2 - linear dimension between inner faces of sidewalls.

EFFECT: invention of rubber-cord casing and extended range of angular and axial displacement of shafts joined by the coupling.

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Description

The invention relates to mechanical engineering, namely to rubber-cord shells of highly elastic couplings and other similar devices, and can be used in all industries for connecting the shafts of machines and mechanisms under conditions of increased distortions and displacement of the axes for transmitting torque.

Known elastic element for highly elastic couplings, made in the form of a toroidal shell for drive couplings (AS No. 475467, publ. 06/30/1975), consisting of rubber-cord layers and side rings.

Known rubber-cord casing for highly elastic couplings (and.with. No. 149076, publ. 12/07/1985), consisting of layers of rubberized cord wrapped on side rings, having side zones of attachment to the coupling halves and made in the form of a torus.

A disadvantage of the known rubber-cord shells is that with the indicated configurations of the cross-sections of the rubber-cord shells, the optimum ratio of the proportions of the shell cross section to the torque is not provided.

The proposed configuration of the rubber-cord casing is capable of transmitting a predetermined torque with a lower mass of the casing as part of the highly elastic coupling, as well as expanding the range of angular and axial displacements of the shafts connected by the coupling.

The technical result is achieved by the fact that the toroidal profile of the rubber-cord casing is defined by one radius along the average diameter of the cross section and its configuration has a proportional ratio to the outer diameter.

The originality of the configuration of the proposed proportions of rubber-cord sheath meets the criteria of the invention of "novelty."

The invention is illustrated in the drawing, which shows the proposed rubber-cord shell, General view.

The rubber-cord casing is a ring rubber-cord toroidal casing, which consists of an inner protective layer of rubber 1, layers of rubberized cord 2, which are wrapped on the bead rings 3, and an outer layer of rubber 4. The rubber-cord casing is provided with bead zones 5.

The novelty of the invention lies in the fact that the profile of the rubber-cord casing is defined by one radius along the average cross-sectional diameter, and its configuration has a proportional relationship with the outer diameter, while the radii R1-R4, linear dimensions of the profile H1, H2, inner diameter D2, which uniquely determine the transverse the cross section of the toroidal shell and the linear dimensions of the profile H1 and H2 are proportional to the outer diameter D1. The proportional dependence of the cross section of the toroidal shell on the outer diameter D1 is determined by the following relations:

R1: D1 = 0.11 ± 20%; R2: D1 = 0.08 ± 20%; R3: D1 = 0.025 ± 20%; R4: D1 = 0.015 ± 20%; H1: D1 = 0.263 ± 20%; H2: D1 = 0.163 ± 20%; D2: D1 = 0.71 ± 20%, where

R1 is the outer radius of the cross-section, R2 is the inner radius of the cross-section, R3 is the radius of the side zone, R4 is the radius of the mating radius of the outer radius R1 and the radius of the side zone R3, D1 is the outer diameter of the rubber-cord shell, D2 is the landing diameter of the shell, H1 is the width of the shell profile, H2 is the linear dimension between the inner surfaces of the airborne zones.

The rubber cord casing according to the invention is made in a known manner by standard technology: an inner rubber layer is applied to the assembly drum, the cord frame is wrapped on the side rings, then an external rubber protective layer is applied and vulcanized (Ragulin V.V. Production of pneumatic tires. 1965, p. 300 , 312).

Rubber-cord sheath in the composition of highly elastic coupling works as follows. The proposed shell acts as an elastic element, through which the leading and driven parts of the drive system are connected and torque is transmitted. The side zones of the shell are fixed in the coupling halves, respectively, of the driving and driven parts of the coupling. When transmitting torque, the intersecting layers of the cord absorb the load, while depending on the direction of rotation of the connected shafts, the corresponding layers of the cord perceive the load by stretching and deformation of the rubber-cord shell, thereby compensating for the angular, axial and radial displacements of the connected shafts, providing noise reduction and vibration damping.

The proposed configuration of the rubber-cord casing allows the set torque to be transmitted in the highly elastic coupling at the smallest possible width and height of the product profile due to the small size of the installation site, as well as expanding the range of angular and axial displacements of the shafts connected by the coupling.

The technical result of the invention is to reduce the height of the profile of the rubber-cord shell and its mass, increase the transmitted torque due to the proposed cross-sectional configuration, which ensures the installation of coupling halves on a larger diameter.

The proposed configuration of the rubber-cord shell allows you to create rubber-cord shells of any size for transmitting different amounts of torque due to the choice of the outer diameter of the shell, as well as expand the range of angular and axial displacements of the shafts connected by the coupling.

Claims (1)

Rubber-cord casing for a highly elastic coupling made of rubber reinforced with intersecting layers of cord filaments wrapped on bead rings, having bead zones for attachment to coupling halves, characterized in that the configuration of the toroidal rubber-cord sheath is defined by one radius along the average cross-sectional diameter, with radii being linear profile dimensions, landing diameter, determining the cross section of the rubber-cord shell, are in the following proportional dependence on the outer diameter: R1: D1 = 0.11 ± 20%; R2: D1 = 0.08 ± 20%; R3: D1 = 0.025 ± 20%; R4: D1 = 0.015 ± 20%; H1: D1 = 0.263 ± 20%; H2: D1 = 0.163 ± 20%; D2: D1 = 0.71 ± 20%, where R1 is the outer radius of the cross-section, R2 is the inner radius of the cross-section, R3 is the radius of the airborne zone, R4 is the radius of conjugation of the outer radius R1 and the radius of the airborne zone R3, D1 is the outer diameter of the rubber-cord shell, D2 is the landing diameter of the shell, H1 is the width of the sectional profile of the shell, H2 is the linear dimension between the inner surfaces of the side zones.