RU2282069C1 - Elastic damping coupling - Google Patents

Abstract

FIELD: mechanical engineering, in particular, equipment used for connecting misaligned shafts and reducing dynamic loadings upon power unit of drive.

SUBSTANCE: elastic damping coupling comprises two half-couplings connected with one another through elastic members made in the form of rotating levers, which are mounted on spindles of second half-coupling. Rotating levers are connected with their one ends to pins located on first half-coupling and with their other ends to slides disposed in guides provided in second half-coupling and adapted for exerting action through springs to plungers of cylinders mounted on second half-coupling. Cavities of cylinders are connected via hydraulic pipelines to throttles incorporated therein. Pneumatic hydraulic accumulators may be connected to hydraulic pipelines.

EFFECT: wider range of elastic damping characteristics of coupling, reduced dynamic loadings transmitted from driven shaft to drive shaft, and compensation of axial displacements of shafts.

2 cl, 2 dwg

Description

The invention relates to mechanical engineering and can be used to connect misaligned shafts and reduce dynamic loads on the drive power plant.

Known elastic couplings with coil springs (Ivanov M.N. Machine parts. Textbook for students of higher technical schools. - Moscow: Higher school, 1991).

However, such couplings allow a small twist angle and do not allow widespread compensation of the angular and axial displacements of the connected shafts.

A rotary coupling is known, comprising two coaxially mounted half-couplings and a guide disk located between them, as well as a rotary device made in the form of a guide screw with right and left threads installed in a diametrical hole, on which crackers are pivotally connected to pushers installed pivotally on the fingers located in the threaded holes of the coupling halves, made around the circumference. In addition, protrusions in the form of segments in contact with the coupling halves are made on the end surfaces of the guide disc (AS No. 473857, Bull. No. 22, 1975)

The reasons that impede the achievement of the required technical result when using such a scheme include the fact that when working with large dynamic loads, a sufficient twisting angle and compensation of axial displacements of the connected shafts are not provided.

The problem to which the invention is directed is expanding the range of variation of the stiffness of the coupling, increasing the smoothness of its operation and expanding the damping capabilities of the coupling.

EFFECT: reduced dynamic loads transmitted from a driven shaft to a leading one and compensation of axial and radial displacements of the shafts.

The specified technical result is achieved by the fact that the elastic and damping elements are connected in series, and not in parallel, as a result of which the stiffness of the coupling changes in a non-linear, piecewise characteristic.

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 existing features of the claimed object.

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

Figure 1 shows the coupling, a General view.

Figure 2 is a section aa of figure 1.

Elastic-damping coupling contains two coupling halves - left 1 and right - 2 (figure 1). On the right coupling half 2 there are pins 3, 4 (Figs. 1, 2), pivoting levers 5 and 6 relative to the axes 7 and 8 on the coupling half 1. The other ends of the levers 5 and 6 mesh with the sliders 9 and 10 installed in the guide coupling halves 1. Plunger cylinders 11, 12, 13 and 14 are fixed on the left coupling half 1, springs 15, 16, 17 and 18 are installed between the cylinder plungers and the sliders. The cavities of the hydraulic cylinders 11 and 12 are connected by a hydraulic pipe 19, into which the throttle 20 is connected, and the cavities cylinders 13 and 14 are respectively connected by a hydraulic pipe 21 with throttle 22 into it. Also, pneumatic accumulators 23 and 24 can be connected to hydraulic pipelines 19 and 21 to expand the elastic-damping characteristics of the coupling.

The operation of the coupling is as follows. The coupling half 2, rotating, for example, clockwise (figure 2), carries with it through the pins 3 and 4 levers 5 and 6, which, turning relative to the axes 7 and 8 on the coupling half, move the sliders 9 down and 10 up. The sliders compress the springs 15 and 18, which in turn act on the plungers of the cylinders 11 and 14. The fluid from the cylinder 11 through the throttle 20 flows into the cylinder 12, moving its plunger in the direction of movement of the slider 10, and the liquid through the throttle from the cylinder 14 22 through the hydraulic pipe 21 flows into the cavity of the cylinder 13, also displacing its plunger in the direction of movement of the slider 9. The displacement of all elements of the coupling occurs until the moments on the coupling halves are balanced. With short-term jumps in the transmitting moment, a sharp deformation of the springs 15 and 18 will first occur, and then the displacement of the plungers of the cylinders 11 and 14, which act as a hydraulic spring, will begin.

When the transmitting torque decreases, the springs 15 and 18 will begin to return the sliders 9 and 10 in the opposite direction until the moments on the coupling halves 1 and 2 are balanced.

The clutch is reversible, therefore, when the coupling half 2 is rotated in the opposite direction, the damping process occurs similarly, in this case the springs 16 and 17, the cylinders 12 and 13 will work.

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

- The tool is designed to reduce dynamic loads when transmitting torque from one shaft to another;

- 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 (2)

1. An elastic-damping coupling containing two coupling halves interconnected by elastic elements, characterized in that the elastic elements are connected at one end with pins mounted on the first coupling half, turning levers mounted on the axes of the second coupling half, the other ends of which mesh with the sliders installed in the guides of the second coupling half and acting through the springs on the plungers of the cylinders mounted on the second coupling half, while the cylinder cavities are connected by hydraulic uboprovodami with incorporated chokes so that the displacement of the coupling member provides to balance the moments on the coupling parts. 2. The elastic damping sleeve according to claim 1, characterized in that pneumatic accumulators are connected to the hydraulic pipelines.

Images