SU388145A1 - SPRING COUPLING - Google Patents

Description

one

The invention relates to the field of mechanical engineering, in particular, to the oriental industry.

Known couplings containing coaxially installed with a gap between the ends of the leading and driven coupling halves, covered by a cylindrical helical spring, made from wire.

A distinctive feature of the proposed coupling is that the wire section has a shape formed by two parallel segments of rotation parallel to the axis of rotation and two side arcs, the straight length of sections being from 1.5 to 2.5 the gap between the coupling halves and the maximum height the arcuate portion of the section is from 0.4 to 0.5 times the length of the straight segment.

Such an implementation provides reliable preservation of the luster.

FIG. 1 Shows the proposed coupling in the section; in fig. 2 - section of the wire.

The clutch contains the master / slave 2 coupling halves installed with a gap between their ends. On the coupling halves there is a cylindrical screw. Spring 3, the BITCHES of which, with tight winding, form a screw channel b, in which a sufficient amount of lubricant is placed. The dimensions of the wire spring section are as follows:

L (1.5 × 2.5) L; / (0.3-0.5) L,

where L is the length of the straight segment;

/ - maximum height of the arcuate portion of the section;

And the gap 3 between the coupling halves.

The spring 3 has a bent end 4, which is used to control the operation mode of the coupling (gripping mode and tripping mode) by means of an electromagnet (not shown in the drawing).

The clutch works as follows.

Since the spring is put on the coupling half with tension, when the leading coupling half rotates in the direction of winding of the friction force spring from the tension, the spring is curled, which compresses the coupling half even more and transmits the torque without slipping.

As a result, the grease located between the coupling half and the spring surface in contact with it is squeezed into the screw channel and held there until the spring is relaxed and the driven and driving coupling releases.

When braking the end of 4 springs or when

the rotation of the coupling half 1 in the opposite direction

wrapping the spring, the friction forces tend to loosen the spring, and the coupling half rotates freely inside it. At the time of relaxation, the grease in the canal is entrained by the rotating elements. And it moves into the resulting gap between the friction surfaces of the coupling halves and the springs.

This movement of grease is automatically repeated depending on the mode of operation of the coupling. A distinctive feature of the coupling is that the center of gravity of the lubricant occupying the filling channel lies closer to the axis of rotation, which reduces the centrifugal oil acting on the lubricant and tending to throw it out of the channel when the mechanism rotates.

Subject invention

Spring clutch containing coaxially mounted with a gap between the ends of the drive and driven half coupling and covering them with a helical coil spring of wire, characterized in that, in order to increase the reliability of the lubricant, the cross section has a shape formed

two parallel axes of rotation with straight and two side arcs, the straight length of the segments being between 1.5 and 2.5 gap sizes: between the half couplings, and the maximum height of the arcuate

portions of the section are from 0.4 to 0.5 dl.