SU1689688A1 - Flexible-centrifugal clutch - Google Patents

Abstract

The invention relates to mechanical engineering and can be used in drive devices for transmitting torque at significant axial, radial and angular displacements of the connected shafts. The purpose of the invention is to improve the damping capabilities and increase reliability by ensuring uniform distribution of the transmitted load. The twisting moment through the hub 1 of the driving half coupling, the rollers 4 is transmitted to the rubberized tape 8 and further to the rim 6 of the driven coupling half. At the moment the clutch is turned on with an increase in torque in the case of vibration impact loads, the tape 8 has the ability to deform. Elastic damping supports are designed to absorb dynamic loads and reduce stress in the belt 8. 3 h. n f-ly, 4 silt

Description

The invention relates to mechanical engineering and can be used in drive devices for transmitting torque at significant axial, radial and angular displacements of the connected shafts, as well as in machines and mechanisms of the building materials industry subjected to vibration shock.

The purpose of the invention is the improvement of damping capabilities and increase reliability by ensuring uniform distribution of the transmitted load.

In FIG. 1 depicts a non-circular centrifugal clutch, general view; in FIG. 2 is a section AA in FIG. 1; in FIG. 3 and 4 - embodiments of the coupling.

The elastic-centrifugal coupling consists of a leading coupling half in the form of a hub 1 with a flange in the form of two shanks 2, at the end of which fingers 3 with elastic rollers 4 are mounted, and a driven coupling coupling made in the form of a hub 5 with a rim 6 having axial grooves 7. In grooves 7 the rim 6 is diametrically located an elastic connecting element made in the form of a rubberized tape 8, the ends of which are fixed on the outer surface of the rim in one circumferential direction using bolts 9. In this case (Fig. 1) the ends of the rubberized tape 8 have the function of dispersed oh centrifugal mass.

Between the outer surface of the rim 6 and the elastic tape (Fig. 3) 8, elastic shock absorbing supports 10 can be installed. The supports 10 can be made (Fig. 4) in the form of cylindrical shells 11, spring-loaded with springs 12 and having means for adjusting the degree of compression of the shells 11 relative to the rim 6 in the form of bolts 13.

In a static state or during operation without load, the elastic connecting element in the form of a rubberized tape 8 is in an undeformed state.

When a torque is applied in the leading coupling half and in the presence of a load on the driven coupling half, the elastic centrifugal coupling works as follows.

Torque is transmitted through the hub ¹ 1 of the driving oil coupling to the shanks 2 and from them to the elastic rollers 4. The elastic rollers 4 are in contact with the elastic connecting element, made in the form of a rubber tape 8. Through the tape 8, the torque is transmitted to the rim 6 of the driven coupling half. At the moment the clutch is turned on with an increase in torque in the case of vibro-shock loads, the elastic connecting element has the ability to deform, i.e., its relative elongation is possible. This increases the flexibility of the clutch s starting torque and with all kinds of fluctuations in torque. Elastic shock absorbing bearings 10 are designed to absorb dynamic loads and reduce stresses in the elastic connecting element, while part of the increased torque is converted by compression of the elastic shock absorbing bearings. Spring-loaded cylindrical liners 11 (Fig. 4) are designed for damping torsional vibrations. With increasing torque, the elastic connecting element in the form of a rubberized tape 8 through the cylindrical liners 11 and bolts 13 compresses the springs 12. Further, when the clutch is operating in the steady state, the liners 11 under the action of centrifugal forces return to their original positions, unloading the springs 12. At the same time, for adjustment the transmitted torque, the degree of preload of the liners 11 is regulated using springs 12 and bolts 13.

The elastic centrifugal clutch has good damping capabilities, since damping of torsional vibrations occurs both in the elastic connecting element in the form of a rubberized tape and in elastic shock absorbing supports.

When the clutch operates in steady state, the resulting centrifugal forces create a gyroscopic centrifugal moment of self-tuning in the clutch.

Claims (4)

Claim 1. An elastic centrifugal coupling containing a driven coupling half with a rim having axial grooves, an elastic connecting element diametrically located in the grooves, the ends of which are fixed to the outer surface of the rim, a driving coupling coupling coaxial to the driven coupling half, fingers with rollers mounted on the flange of the driving coupling half in contact with the elastic connecting element and centrifugal loads located at the ends of the elastic connecting element, characterized in that, in order to improve the damping capabilities and increase the reliability of the track ensure uniformity of distribution of the transmitted load, the resilient connecting element is a rubberized belt, the ends of which are arranged in one circumferential direction, and the rollers are located on opposite sides of the tape. 2. Coupling in π. 1, characterized in that between the rim and the tape in the area of its end sections are shock absorbing bearings. 3. The coupling according to claim 2, characterized in that the elastic shock-absorbing bearings are made in the form of inserts spring-loaded relative to the rim with a cylindrical surface facing the tape. 4. The coupling according to claim 3, characterized in that it is equipped with a means for adjusting the degree of preload of the liners relative to the rim.