RU1776897C - Dynamic damper of angular oscillations - Google Patents

Abstract

Usage: damping angular vibrations of various objects of machines and mechanisms. SUMMARY OF THE INVENTION: the device comprises a flywheel (2) mounted on the shaft (1). planetary gear, elastomer ring (11) and rim (10). The flywheel (2) is surrounded by an elastomer ring (11), and the latter is surrounded by a rim (10). 1 ill. w Ј x | h | (00 ju vj

Description

The invention relates to mechanical engineering, in particular to means for damping angular vibrations of shafts and machine bodies.

Known angular vibration damper, comprising a shaft mounted on it with the possibility of angular displacements relative to the flywheel shaft, a planetary gear, the axis of the satellites of which are placed in the holes on the flywheel rim and are equipped with masses, and a torsion spring, and the central planetary gear wheel is mounted on the shaft with the possibility rotation, and the flywheel is connected to the shaft using torsion spring 1.

A disadvantage of the known device is the low efficiency of damping angular oscillations.

A known angular vibration damper comprising a planetary gear mounted on a machine shaft, the carrier of which is made in the form of a flywheel, a rim mounted on a central wheel with external teeth, an elastic element for connecting to the base of the central wheel with the internal teeth of the planetary gear, and an additional elastic element installed either between the flywheel and the shaft, or between the rim and the hub of the central wheel with the outer teeth of the planetary gear 2.

A disadvantage of the known device is the low efficiency of damping angular vibrations when balancing the shaft and the machine body at the same time.

The purpose of the invention is to increase the efficiency of damping angular vibrations of the shaft and the machine body at the same time, achieved by expanding the operating frequency range.

This goal is achieved by the fact that in the known dynamic vibration damper comprising a flywheel mounted on a shaft, a planetary gear, satellite axles of which are located on the flywheel, an elastic element for coupling the central wheel with the internal teeth to the base and an elastomer ring, a rim is mounted covering an elastomer ring, and the flywheel is gripped last.

The drawing shows the layout of the absorbers.

Dynamic damper contains mounted on the shaft 1

flywheel 2, representing the planet carrier of the planetary gear including satellites 3, central wheels with outer and inner teeth 4 and 5, respectively, an elastic element in the form of springs 6, intended for coupling the central wheel with internal teeth 4 with the base 7, representing car body. On wheels 4, 5 and flywheel 2 are installed

rims 8,9 and 10. Moreover, the rim 10 covers the ring 11 of elastomer, and the last flywheel 2 is covered,

Dynamic damper of angular oscillations works as follows.

The angular vibrations of the shaft 1 through the flywheel 2 are transmitted to the satellites 3, the central wheels 4 and 5 of the planetary gear, causing deformation of the springs b, as well as to the rim 10 through the ring 11 of elastomer. With

of the planetary gear side and the elastic ring 11, a balancing moment is transmitted to the shaft 1. In addition, the inertial moment loading of the Central wheels 4 and 5, their rims 8 and 9 and the rim 10 through

springs 6 are transferred to the housing 7. By selecting the stiffness of the springs b and the ring 11 from the elastomer, the values of the moments of inertia of the satellites 3, the central wheels 4 and 5, the rims 8, 9 and 10, as well as the center distance

between satellites 3, the equality of the moments of forces causing the angular oscillations of the shaft 1 and the balancing moment, as well as in the antiphase of the moment loading transmitted to the base 7, and the reactive moment causing the angular oscillations of the base 7 are achieved.

At the same time, the structure of the dampers provides a number of possible options for its adjustment, including two dominant ones

harmonics of disturbance. As a result, the oscillation amplitudes i of the shaft 1 and the base 7 decrease.

Claims (1)

SUMMARY OF THE INVENTION A dynamic angular vibration damper comprising a flywheel mounted on a shaft, a planetary gear with satellite axles located on the flywheel, an elastic element for coupling the central wheel with the internal teeth to the base, and an elastomer ring, from. They are characterized by the fact that, in order to increase the effectiveness of the damping sight of angular vibrations, it is equipped with a rim covering an elastomer ring, and the flywheel is covered last.