SU1490332A1 - Resilient bearing - Google Patents

Abstract

The invention relates to mechanical engineering and can be used in bearing supports of machine rotors. The purpose of the invention is to provide the ability to control the stiffness of the elastic support. The support is equipped with a device for adjusting the stiffness in the form of a finger 4 with concentric rows of cylindrical rods 5 evenly spaced around the circumference, which are installed in the corresponding grooves of the elastic support sleeve 1. When the pin 4 is rotated, the length of the elastic lintels of the sleeve changes. This allows adjustment of the support stiffness to ensure optimum vibration isolation of the rotor of the machine. 2 Il.

Description

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The invention relates to mechanical engineering and can be applied in elastic bearing supports.

The purpose of the invention is to provide control of stiffness of the elastic support.

Figure 1 presents the section aa in figure 2; figure 2 - section bb in figure 1.

The elastic support includes a sleeve I with elastic bridges 2 formed by concentric rows of through grooves 3 evenly spaced around the circumference. The angular extension is the same in all grooves. On the side of the end surface of the sleeve 1 and coaxially with it, a ring 4 is installed with concentric rows of cylindrical rods 5 evenly spaced around the circumference. The number of cylindrical rods 5 is equal to the number of grooves 3. The average diameters of the rows of rods 5 are equal to the average diameters of the rows of grooves 3. Angular the displacements “, the rods 5 of the adjacent concentric rows from each other are equal to the angular displacements | 3 of the beginnings of the slots 3 of the respective rows. The rods 5 are installed in the slots 3 with the possibility of moving in them-. To fix the ring 4 in the selected position, the support is provided with nuts 6, screwed onto the threaded ends of the rods 5 protruding beyond the end of the sleeve 1,

The elastic support on the outer surface of the sleeve I rests on the mechanism case (not shown), and the bearing insert (not shown) is rigidly fixed on the internal surface of the sleeve 1. Ring 4 before working to improve the vibration characteristics of the mechanism is set to

one of the extreme positions, the rods 5 are located either at the beginning or at the end of the corresponding grooves 3. In this case, the length of the elastic bridges 2 is maximum, and the rigidity of the elastic support is minimal. Controlling the vibration on the support, turning the ring 4 around the axis until the vibration level is minimal, which corresponds to the optimal vibration isolation poTOjJa with an elastic support for this mechanism. In this position, the ring 4 is fixed by the device 6.

The proposed technical solution allows one to improve the vibration1; the ionic characteristics of the mechanism due to the provision of the optimum vibration of the rotor by an elastic support by adjusting its rigidity.

Claims (1)

Invention Formula An elastic support in the form of a sleeve with concentrically arranged and pairwise interconnected through grooves of the same length, made with an angular displacement relative to each other, characterized in that, in order to ensure the possibility of adjusting the rigidity of the elastic support, it is equipped with a ring installed coaxially with the sleeve. rods fixed to it, evenly spaced around concentric circles with an angular displacement equal to the angular displacement of the slots, while the rods are set to the corresponding etnye grooves, with the circumferential movement therein and fixing a predetermined angular position relative to the sleeve. FIG. I