RU2379558C1 - Elastic coupling with passive damper - Google Patents

Abstract

FIELD: engines and pumps.

SUBSTANCE: elastic coupling comprises two half-couplings jointed by elastic elements. Drive half-coupling is furnished with rollers, while driven half-coupling groove accommodates two plate-supported thrust prisms with their copying surface interacting with aforesaid rollers. Note here that elastic elements are arranged between said prisms. Note also that said half-couplings have spaces to accommodate inertial weights coupled, via plate springs, with half-couplings. Inertial weights can be located in damping fluid encased in reservoir along the edge of half-couplings.

EFFECT: expanded spectrum of torsional oscillation damping, reduced dynamic loads and shafts misalignment compensation.

3 cl, 3 dwg

Description

The invention relates to mechanical engineering and can be used to connect misaligned shafts and damping torsional vibrations.

Known torsional vibration damper for the perception or compensation of torsional shocks, in particular torque fluctuations, containing two disk parts, an energy accumulator, load means (RF patent No. 2230954).

However, this vibration damper is an additional device mounted on the shaft, and is not intended to connect misaligned shafts.

Known elastic coupling containing two half-couplings connected between the elastic elements, the leading coupling half is equipped with rollers, and in the groove of the driven coupling half are installed two thrust prisms, bursting with elastic elements (RF patent No. 2282068).

The reasons that impede the achievement of the required technical result when using such a clutch include the fact that when working with high torque, a sufficient spectrum of damping is not provided.

The problem to which the invention is directed is the damping of torsional vibrations.

The technical result is the expansion of the spectrum of damping oscillations along with a decrease in dynamic loads and compensation of shaft misalignment.

The specified technical result is achieved in that in an elastic coupling containing two coupling halves interconnected by elastic elements, the leading coupling coupling is provided with rollers, and in the groove of the driven coupling coupling are two thrust prisms supported by planks, the copy surface of which interacts with the said rollers, and between the prisms elastic elements are installed, in the coupling halves there are cavities in which inertial masses are connected, connected to the coupling halves by means of leaf springs. The inertial masses of the passive vibration damper of the right and left coupling halves are interconnected by an elastic element in the form of a leaf spring. They can be placed in a damping fluid, enclosed in a tank along the rim of the coupling halves, and placed diametrically opposite, have different masses and stiffnesses of the connected elastic elements.

The analysis of the prior art by the applicant, including a search by patent and scientific and technical sources of information, made it possible to establish that the applicant has not found an analogue characterized by features identical to all the essential features of the claimed object.

Therefore, the claimed invention meets the requirement of "novelty" under the current law.

Figure 1 shows a clutch in section;

figure 2 is a section aa, figure 3 is a section bb.

The elastic coupling (Figs. 1 and 2) consists of a leading coupling half 1 with rollers 2 and a driven coupling half 3, in the groove of which two thrust prisms 4 are mounted, supported from falling out by strips 5 and bursting by elastic elements 6. Cavities 7 are made in the coupling halves 1 and 3 and 8, respectively (FIG. 3), filled with a damping fluid, inertia masses 9, 10, 11 and 12 (masses 10 and 12 are not visible in the drawing) are mounted uniformly around the circumference of the cavity 7 of the coupling half 1, which are mounted on the coupling half 1 by means of leaf springs 13, 14, 15 and 16 (leaf springs 14 and 16 in the drawing do not ), and inertia masses 17, 18, 19, and 20 are placed in cavity 8 of coupling half 3, which, in turn, are connected to coupling half 3 with leaf springs 21, 22, 23, and 24. The cavities are hermetically closed by caps 25 and 26. Placed in the cavities with damping fluid inertial masses 9, 10, 11, 12, 17, 18, 19, 20 and connected to the coupling halves by means of leaf springs 13, 14, 15, 16, 21, 22, 23 and 24, respectively, are a passive damper.

The operation of the device is as follows. When the driving coupling half 1 is rotated, the rollers 2 are pressed against the thrust prisms 4, which, in turn, moving into the groove of the driven coupling half 3, compress the elastic elements 6. When the torque decreases, the elastic elements 6 return the resistant prisms 4 to their original position. Moreover, the clutch can work when transmitting torque in any direction.

When there is an oscillatory effect of torque on the coupling halves, the inertial masses 9, 10, 11, 12 and 17, 18, 19, 20 attached to the coupling halves 1, 3 by means of leaf springs dampen these fluctuations.

Moreover, the frequency of natural vibrations of the inertial masses of the coupling half 1 can be different from the frequency of the natural oscillations of the masses 17, 18, 19 and 12 of the coupling 3. Moreover, the masses of the cargoes 17, 19 and 18, 20, i.e. oppositely placed, may be different. All this allows you to fine-tune the clutch to absorb a wider range of vibrations.

Thus, the above information indicates the fulfillment of the following set of conditions when using the claimed invention:

- The tool is designed to expand the spectrum of damping oscillations, along with a reduction in dynamic loads and compensation for misalignment of the connected shafts;

- The tool embodying the claimed object is capable of achieving the achievement of the technical result perceived by the applicant.

Therefore, the claimed invention meets the requirement of industrial applicability under applicable law.

Claims (3)

1. An elastic coupling with a passive damper, comprising two coupling halves interconnected by elastic elements, the leading coupling half being provided with rollers, and two thrust prisms supported by slats in the groove of the driven coupling half, the copy surface of which interacts with said rollers, and elastic elements are installed between the prisms characterized in that in the coupling halves there are cavities in which inertial masses are placed connected to the coupling halves by means of leaf springs. 2. An elastic coupling with a passive damper according to claim 1, characterized in that the inertial masses are placed in a damping fluid enclosed in a reservoir along the rim of the coupling halves. 3. An elastic coupling with a passive damper according to claim 1, characterized in that the inertial masses placed diametrically opposite have different masses and stiffnesses of the connected elastic elements.

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