SU1411529A1 - Elastic expanding clutch - Google Patents

Abstract

The invention relates to mechanical engineering and can be used to connect shafts of various mechanisms for transmitting torque, compensating for the misalignment of connected shafts and damping the possibility of oscillations and dynamic loads. The goal is to increase. compensating properties, load capacity and durability. The coupling contains two coupling halves. . On their shanks are fixed pieces of spring tape in the form of arcuate plates bent to the axis of the coupling. When the moment is transmitted, the perpendicularity between the shanks is broken. The two diametrically arranged elastic elements are bent even more. Their tops approach the coupling axis. The remaining elastic elements are straightened out and their tops move away from the axis. With an increase in the rotational frequency under the action of centrifugal forces, the elastic elements try to return the coupling halves to their original position, compensating for the relative turn. 2 Il. i a C

Description

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The invention relates to mechanical engineering, instrument making and other tradional households and a motor to be used for connecting shafts with the aim of transmitting a twisted torque with significant radial and axial displacements of connected shafts, as well as damping torsional vibrations, dynamic loads, knocks and blows.

The purpose of the invention is to increase the compensating properties, load capacity and durability.

Figure 1 shows the elastic coupling, a general view; in fig. 2 shows view A in FIG.

The clutch contains two identical bushing. One half-coupling consists of: a hub 1, in the slots of which, perpendicular to the axis of rotation, the shanks are arranged in the form of a fixed crossbar 2, the ends of which have L-shaped lugs 3, parallel to the axis of rotation (Fig. 1). The second half-coupling also consists of the hub A (Fig. 2), in the grooves of which, perpendicular to the axis of rotation, are also placed the quastoviki in the form of a fixed cross member 5, which is plowed. L-shaped tips 6 parallel to the axis of rotation. The crossbars 2 and 5 in the hubs 1 and 4 are installed rotated between themselves at an angle of 90 ° Hack, which together form a cross (Figure 1), and the L-shaped tips of Tsiki 3 and 6, belonging to one and the second coupling halves, are directed alone Against others. The interaction of the semi-coupling is carried out through elastic (elements 7 in the form of arcuate plates made of spring-tape segments with their concavity directed to the axis of the coupling, radially located: the ends of which are fixed to the L-shaped tips of both semi-CFT using lining 8 and fasteners- 1YYH parts, with the possibility of quick fra in the axial displacement of the coupling halves.

The l-shaped shape of the tips of the yoke is caused by constructive requirements, since otherwise they are not placed one on the other, and the cut-ifcH of the bent spring tape will be obtained (Restrictions on deformation, not having Free Space, which leads to To reduce compliance and increases stresses in the elastic element (the durability of the coupling is reduced).

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The clutch works as follows.

In the static position and during rotation, in any direction, without load, the cross member 2 of one half-coupling is located at an angle of 90 to the cross-member 5 of the second half-coupling, and the elastic elements 7 occupy positions determined by the design of the coupling. I.

With torque application

to the driven half coupling, when the coupling rotates, for example clockwise, the perpendicularity between the crossmembers 2 and 5 is broken, the elastic elements 7, located in the second and fourth quarters of the cross, are bent, and their tips of the concavity approach the center of rotation of the coupling, and the resilient elements 7, located in the first and third quarters, are straightened, and their tips of the concavity are removed from the center of rotation of the coupling. G increasing the rotational speed under the action of centrifugal and restoring forces of the elastic elements 7, the latter try to return to their original position, reducing the rotation of one coupling half relative to the other.

At a certain frequency of rotation and the transmitted torque between the coupling halves, dynamic equilibrium is established, characterized by the deformation angle of the coupling.

The interaction of the coupling halves through the elastic elements, in the form of arcuate plates, sealed to the L-shaped tips of the crossbars of both coupling halves, increases the radial and axial compensation of the connected shafts.

The use of an elastic element-a in the proposed coupling, made of sections of curved spring tape, allows to simplify the design and manufacturing technology; at the points of attachment of the elastic element to a minimum, to reduce the stress concentration} the fasteners of the elastic element in this case work on the shear, and the effective component force on the fasteners makes it possible to constructively fasten small dimensions, increasing the flexibility of the coupling as compared with with the annular shape of the elastic element; the carrying capacity increases, as the sections of the bent spring tape can be applied with a larger section than the ring, ring

a larger section becomes rigid, and sections of the curved spring belt have an increased compliance; :: securing the pieces to the shanks eliminates the bending moment at the attachment points acting on the ring from the transmitted torque, which reduces the contact stresses and increases the durability of the coupling, the distributed mass of the curved spring tape segments is closer to the center of the wiggle and decreases when the shafts are connected imbalance.

The coupling of the proposed design is rational to use, for example, in the auxiliary drive of tire vulcanizers, motor vehicles.

Claims (1)

Invention Formula An elasto-centrifugal clutch, containing the driving and driven half-couplings, each of which is made in the form of hubs with two oppositely directed shanks, forming a cross joint together, and an elastic element associated with the crosspiece, which, in order to increase the compensating properties, load capacity and durability, the elastic element is made in the form of curved sections of the spring tape, located convexity to the axis of the coupling, and the ends of each segment are parallel to the adjacent shank and rigidly fixed us to them. FIG. one FIG. 2