SU1413327A1 - Hydraulic shock-absorber - Google Patents

Abstract

The invention relates to mechanical engineering, namely to means of damping vibrations. The circuit of the invention is to increase the damping efficiency over a wide frequency range due to the non-linear characteristic of the elastic element between the piston and the rod. When the shock absorber influences high-frequency oscillations of the pores, the 2 s 2 remains almost stationary relative to the housing 1 and only FITOK 3 moves with the segments 4: and 5 and the spring 6, and initially only the free part of the spring 6 is deformed to the segment 5, and then, when the force arising from the stem 3. recovers more than the preload of the spring 6, it departs from segment 5 and deforms along its entire length, thereby reducing the stiffness of the elastic element. shock absorber. In the final phase of the downward movement of the rod 3, a part of the spring 6 contacts the segment 4, thereby increasing the stiffness of the elastic element of the damper. 2 Il.

Description

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The invention relates to a machine building, namely to means of damping vibrations.

The aim of the invention is to increase the damping efficiency over a wide frequency range due to the non-linear characteristic of the elastic element between the piston and the rod.

Fig, 1 shows a hydraulic shock absorber, a longitudinal section; in fig. 2 shows the dependence of the force on the rod on its movement.

The hydraulic shock absorber includes a housing G, a piston 2 moving in it with a rod 3, on which segments 4 and 5 are fixed, between the cat Pb1mi there is an elastic element in the form of a leaf spring 6 having a preliminary deformation along a radius smaller than the radius of curvature of the segments, To segment 5 leaf spring 6 is pressed with some force across its surface, while the spring 6 is fixed in the piston 3 around the perimeter.

Hydraulic depreciation: the mash works as follows.

When high-frequency oscillations are applied to the shock absorber, the piston 2 practically remains stationary relative to the housing 1. When the rod 3 moves relative to the housing 1, the distance between segments 4 and 5 and piston 2 increases, and since part of the spring 6 is pre-pressed to segment 5, it deforms : only part of spring 6 is free,

Upon further movement of the rod 3, the force arising from its side becomes greater than the preliminary pressing of the spring 6, while the movement of the rod 3 down the spring 6 moves away from segment 5 and deforms along its entire length, reducing the rigidity of the shock absorber, which corresponds to a flatter part of the force on the rod 3 from its movement (Fig. 2),

Claims (1)

In the final phase of the movement of the rod 3 down part of the spring 6 in contact with segment 4, its length decreases and, creasefully, the shock absorber stiffness increases which corresponds to the increase in the characteristic of the dependence of the clamp on the rod 3 from its movement, this ensures the non-linearity of the elastic element of the shock absorber. Formula A hydraulic shock absorber comprising a housing, a piston with a rod located therein and an elastic element mounted between them, characterized in that, in order to increase the damping efficiency in a wide frequency range, it is equipped with two segments facing each other with convex sides and mounted on the rod, and the elastic element is designed as pre-deformed along a radius less than the radius of curvature of the segment, a leaf spring placed between the segments and fixed in the piston around the perimeter. R.N Cfm FI.2