SU1747749A1 - Flexible coupling - Google Patents

Abstract

The invention relates to mechanical engineering and can be used to transfer torque between non-axial shafts. The purpose of the invention is to increase the load capacity. The elastic coupling consists of two coaxially arranged coupling halves 1, 2 interconnected by an elastic tape element 3. The profile middle sections of the element 3 diverge in a radial direction from the axis of the coupling. The end sections of the element 3 in the places of their attachment to the coupling halves are located in planes parallel to end surfaces of the coupling half 1.2. The cross sections of the middle portions of the element 3 are oriented on the tangential plane on the axis of maximum rigidity of the specified section. 4 il.

Description

The invention relates to mechanical engineering and instrument making and can be used to connect rotating shafts having axial, angular and parallel displacements.

A known elastic coupling comprises two coaxially disposed half coupling, interconnected by an elastic element in the form of intertwined ribbons, each of which forms a sine profile.

The disadvantage of this coupling is its increased axial dimension and low load capacity.

The elastic clutch is known, containing two coaxially arranged half coupling, interconnected by an elastic element, made in the form of an asterisk with rays, alternately bent toward the coupling half,

This elastic coupling also has a low load capacity.

Also known is an elastic-centrifugal coupling containing two coaxially arranged coupling halves interconnected by a closed elastic contour element in the shape of a Bernoulli lemniscate, the end sections of which are rigidly fixed on the coupling halves, and the profile middle sections flow radially from the coupling axis. When a torque is applied, the loops of the elastic element are deformed, the coupling halves twist at a certain angle. At the same time, dynamic disturbances are damped due to the conversion of kinetic energy into the potential energy of twisting the loops of the tape

This elastic coupling is the closest to this technical essence and the achieved result.

The disadvantage of this known clutch lies in its reduced load capacity, since the torsional rigidity of the flexible element is determined by the minimum moment of resistance of its cross section according to the formula

wy,

where Wy is the moment of resistance with respect to the y axis;

B - tape thickness;

{L

  s

Yu

H is the width of the tape.

The aim of the invention is to increase the load capacity of the elastic coupling. To achieve this goal, there is an elastic centrifugal coupling containing two coaxially located coupling halves, interconnected by a closed elastic band, the end sections of which are rigidly fixed on the coupling halves, and the profile middle sections are consumed the radial direction from the axis of the coupling, the end sections of the elastic element, in the places of their attachment to the coupling halves, are located in planes equidistant end surfaces of the floor the couplings, moreover, the surfaces of the end sections of the belt are oriented relative to each other oppositely, and the cross sections of the middle sections of the belt in the places as far as possible from the axis of the coupling are oriented in the tangential plane along the axis of maximum rigidity of the specified section,

Figures 1-4 give examples of coupling arrangements and.

The clutch consists of coaxially located leading 1 and driven 2 half coupling elastic tapered element 3, the ends of which are rigidly fixed on the surface of the couplings, and the surfaces of the ends of the tape are oriented ottozitno relative to each other, and the cross sections of the middle sections of the tape locations remote from the doufax axis, are oriented in the tangential plane along the axis of maximum rigidity of the specified section, the moment of resistance of which is determined relative to the x axis and is is maximum for a given section,

I, N B

Wxg-,

where Wx is the moment of resistance with respect to the x axis;

B - tape thickness;

H is the width of the tape.

For better perception, the inner part of the tape is darkened in the figure. Figures 1 and 2 show a variant with spaced semi-couplings; on fig.Z and 4 - option with the approached half coupling. The options shown suggest non-reversible torque transmission.

To reverse the moment, it is sufficient to make spatial profiles of the ribbon element mirror.

Economic advantages of the proposed coupling design:

-expansion of the application range for a wider class of powerful aggregates;

- reduction of vibration loads, an increase in the unit overhaul period;

- reduction of material consumption in the manufacture of the coupling.

Claims (1)

Claims of the invention The elastic compensating coupling comprising two coaxially arranged coupling halves interconnected by a closed elastic contour tape element, the ends of which are rigidly fixed to the coupling halves, and the profile middle sections disperse in the radial direction from the axis of the coupling, characterized in that, in order to increase the load capacity, the ends of the elastic element at their attachment to the coupling halves are located in planes equidistant to the end surfaces of the coupling halves, the surface of the tape section connected to one of the coupling halves and facing in the second coupling half, the opposite surface of the belt is located opposite in the area of the section connected with the second coupling half, and the cross sections of the middle sections of the ribbon in the most distant places from the coupling axis are oriented tangentially plane of maximum stiffness axis specified section. / A r ViyoA Editor N.Semenova Faye. Compiled by V.Kn Zev Tehred M. Morgental Fig 1 Proofreader A.Osaulenko