SU868167A1 - Non-detachable flexible coupling - Google Patents

Description

(54) SPRING COUPLING

one:

The invention relates to mechanical engineering and can be used to connect the shafts of machines and mechanisms.

Closest to the proposed one is a spring clutch, which contains two coupling halves connected between corbels of groups of precompressed cylindrical springs with limiting ti3. ;

The disadvantage of this coupling is the presence of dynamic loads.

The purpose of the invention is to reduce the dynamic loads.

The goal is achieved by the fact that the spring coupling comprising two half couplings connected by a mezkda with itself by groups of pre-compressed cylindrical springs with limiters is equipped with pivotally mounted on one of the coolers of each group of springs, centric sleeves.

This embodiment of the coupling provides a reduction in dynamic loads.

On figl depicted clutch, a general view; on fig / 2 - section aa on figd on fig. 3 - section bb in figure 1, the spring clutch contains half couplings 1 and 2. On the rim of the coupling half 1, with /

the inner side, there are protrusions 3, which are located in the annular groove of the rim of the coupling half 2. The projections 3 of the coupling half 1 and the rim of the coupling half 2 have the same shaped cutouts (sockets) into which the springs 4 with the limiters 5 are inserted turn.

10 The sleeve 6 has two windows for the passage of the stops 5 and the springs 4. The circumferential size of the window is determined by the required angle of rotation of the sleeve relative to the axis of the stop

15 when changing the pre-compression of the springs in a given range of adjustment. When the coupling is operating, the limiter 5 in the sleeve 6 is fixed in place. Fixing limiter

20 in the sleeve may be performed by spacer cones, locking screws or other known methods. At the ends of the in-roll 6, two blind holes 7 are made. At the center of the ends of the axis of the restrictor 5, one blind hole 8 is made. Openings 7 and 8 are needed to install the pin wrench by means of which the sleeve 6 is rotated relative to the restrictor 5. 30

It is covered with a disk 9 attached to the coupling half 1 with screws.

The clutch works as follows.

The torque is transmitted, for example, from the coupling half 1 through the sleeve 6, the stops 5 and the spring 4 to the coupling half 2,

In the unloaded coupling sleeve b and limiters 5 are in contact with their cylindrical surfaces with cylindrical surfaces of shaped cutouts in the projections 3 and the rim of the coupling half 2, and the springs are pre-compressed Until the torque transmitted by the coupling reaches the moment of pre-compression of the springs , the springs will not deform. The stiffness of the coupling is high and equal to the rigidity of the drive line. When the 1st moment is transmitted by the 1st moment, the magnitude of the moment from spring pre-compression of the springs is additionally compressed, and the stiffness of the coupling sharply decreases. When the springs are compressed, a relative rotation of the coupling halves occurs and the protrusions 3 of the coupling half move in an annular swing of the rim of the coupling half 2.

The clutch is adjusted to the magnitude of the moment from spring pre-compression by rotating the sleeve 6 relative to the axis of the limiter 5. Rotating the sleeve changes the distance between the bearing surfaces of the spring ends and thereby changes the spring preload value. When adjusting the amount of pre-compression of the springs of the sleeve 6 and the limiter 5 should be raspoporeny.

By supplying the clutch with eccentric bushings that are rotatably mounted on one of the restraints of each spring group, it is possible to adjust the clutch to the magnitude of the torque from the preload compression of the springs, while significantly reducing the dynamic loads of the clutch

Claims (1)

1. Dashkevich B.P., Dtshenko S.K., Stolbovoi S.Z. Machine parts. Kiev, 1959, pp. 190-191, rice, 96. . Phage.2 Fig.Z