RU1820083C - Damper - Google Patents

Abstract

Usage: mechanical engineering, namely mechanical vibration damping devices. SUMMARY OF THE INVENTION: The damper comprises telescopically mounted elements with grooves made on the surfaces of the latter facing each other, at least one rolling body, each installed at the intersection of the grooves, a rod with a piston and springs located at both ends of the piston. Springs and a piston having longitudinal holes are located in a cavity made in the internal telescopic element at its end facing the oscillation source. This cavity is filled with liquid. 2 ill.

Description

Joint venture

WITH

The invention relates to mechanical engineering, in particular to dampers, and can be used to dampen mechanical vibrations in systems with reciprocating movement of structural elements. .

The purpose of the invention is to increase reliability by increasing the life of the damper by freeing the working surfaces of the conjugated elements from shock loads at the initial moment of exposure and perceiving them at this moment by a liquid stage.

Figure 1 shows the damper, a longitudinal section; figure 2 is a section aa in figure 1.

The damper comprises an internal telescopic element 1, an external telescopic element 2, grooves 3 and 4, a rolling body 5, a piston 6 with longitudinal holes 7 and a rod 8, a cavity 9 filled with liquid, springs 10, a cover 11 and a plate 12.

The inner telescopic element 1 is designed to absorb the loads of the reciprocating motion and transfer them through the rolling bodies 5 to the outer telescopic element 2. The inner telescopic element 1 has spiral grooves 3 on the outer surface, as well as a cavity 9 for accommodating the piston 6, the fluid and the springs 10. The piston 6 is connected through the rod 8 to the plate 12. The outer telescopic element 2 has an inner annular groove 4. At the intersection of the grooves 3 and 4, rolling elements 5 (balls) are placed.

Damper works as follows ..

At the initial moment of oscillation, the load of the external action is perceived by the plate 12 and transmitted through the rod 8 to

With

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piston 6. The latter, moving in the cavity 9, compresses the fluid and one of the springs 10. The fluid flows through the holes 7 on one side of the cavity 9 and the other. 8 as a result of fluid overflow through calibrated holes 7, energy dissipation occurs. With further movement of the piston 6, the external force is transmitted to the inner telescopic element 1. The effect of further damping occurs due to the rolling train 5 relative to grooves 3 and 4, since they cannot participate simultaneously in two different directions of the rolling body 5 without friction one of the directions.

The moment the damping starts and ends with the liquid stage depends on the stiffness of the springs 10, the diameter of the holes 7 and the viscosity of the liquid in the cavity 9. Thus, the proposed damper eliminates the impact

8 # // 9

external {unloading non-mating rubbing surface, reduce the phenomenon of metal hardening and grooving of telescopic elements and thereby extend the life of the damper.

Claims (1)

The claims A damper comprising telescopically mounted elements with grooves made on the surfaces of the latter facing each other, and at least one rolling body, each installed at the intersection of the grooves, characterized in that, in order to increase reliability, in the inner telescopic element on it the end facing outward is filled with a fluid-filled cavity, and the damper is provided with a piston placed in the last rod, rigidly connected to it with longitudinal holes and springs located at both ends along rshn. I Fi g. 2