SU815337A1 - Electric coupling - Google Patents

Description

(54) ELASTIC CLUTCH

I

The invention relates to mechanical engineering, in particular, to devices for transmitting rotation.

A known elastic coupling comprising two concentric half-couplings and elastic elements 1.

Its disadvantage is the lack of axial vibration damping.

The closest in technical essence to the present invention is a coupling comprising arranged outer and inner coupling halves with radial grooves and elastic elements 2 accommodated therein.

Its disadvantage is the complexity of operation and low service life.

The purpose of the invention is to simplify exploitation and increase the service life.

The goal is achieved by the fact that the grooves of the outer coupling half are made with a depth less than the thickness of the elastic elements. And the latter are made with discharge grooves located along their perimeter at the level of the outer diameter of the inner coupling half.

FIG. 1 shows the elastic coupling, cut; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. 2

On the shaft 1 on the key 2 there is installed a leading inner coupling half 3, which is held against axial displacement by a nut 4. In the coupling half 3 radial grooves 5 are made. and the role of the pulley for the drive of the auxiliary units) and with the impeller 8 fixed to it 8 of the fan. The fan impeller 8 is bolted to the end lugs of the half-coupling 6 and forms grooves 9 with them.

In the grooves 5 and 9, elastic rubber elements 10 are installed, on the front and side surfaces of which the discharge grooves 11 are made. When the impeller 8 is installed, the elastic elements 10 receive some compression and on their ends they form

ledges a, holding the elastic elements from radial displacement.

The operation of the elastic coupling is carried out as follows.

The leading coupling half 3 and the knowledge of coupling half 6 receive torsional and axial oscillations relative to each other, mainly from vibrations occurring on the fan impeller, which are damped by elastic elements 10 fixed between them. relative to each other, and the elastic elements 10 are in contact with both parts, the grooves 11 exclude the occurrence of shear stresses on the surfaces of the elastic elements and the occurrence of foci of destruction.

The parts of the coupling practically work without wear, and in case of fatigue failure of elastic elements, they are replaced without disassembling the coupling. To replace them, it is enough to loosen the mounting bolts of the impeller 8, move it by 2 a, i.e. beyond the end limits of the grooves 5, remove the elastic elements 10 in the radial direction and insert new ones instead. After that, tighten the impeller mounting bolts again 8.

The positive effect is to increase the durability of the elastic elements, since they work in compression and there are no tensile stresses in them,

In the convenience of service, good maintainability, compactness, since the drive pulley of the auxiliary units (compressor, generator) is combined with the clutch.

Claims (2)

1. Polk V.S., Barbash I.D., R Khovsky OA Coupling reference book. L., “Mechanical Engineering, 1974, p. 134, fig. 8, 59. 2. USSR author's certificate JV9 627264, Cl. F 16 D 3/58, 1977 (prototype). / 4 - A fa 2