SU1227852A1 - Vibration damper - Google Patents

Description

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This invention relates to dynamic damping means for vibrating various objects.

The aim of the invention is to increase the vibration quenching efficiency achieved by expanding the range of operating frequencies.

FIG. 1 shows a diagram of the vibration damper; in fig. 2 - scheme of installation on the object of several vibration dampers.

The vibration damper contains a mass in the form of weights 1 with through holes, passing through the apertures of weights 1 string 2, frame 3, mounted horizontally on object 4, electric motor 5, cable 6, connecting the shaft of the latter to the shock and 1 mounted on the frame 3 another electric motor 7 with a rod 8 and springs 9 mounted between the weights 1 and connected to them.

One end of the string 2 is fixed on the frame 3, the other is wound on the rod 8, and the cable 6 connects the electric motor 5 to the weights 1 by means of the blocks 10.

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The vibration absorber works in the following manner.

Vibrations of object 4 are quenched due to vibrations of loads 1 on string 2 in a narrow frequency band in antiresonance mode.

When the vibration frequency of the object D is changed, the vibration damper is reset to the new frequency by changing the stiffness by tightening the string 2 with the help of the electric motor 7.

Resetting the damper to a new frequency can be made by changing the stiffness characteristics by moving loads 1 along the string 2 with the help of electric motor 5 and cable 6. With damper oscillations, loads 1 automatically find the place of maximum deflection of the string 2, which also leads to an increase in the effectiveness of the vibration damper.

The use of vibration damping allows to reduce the dynamic loads when the stroke w 1 s on the object, which will increase the reliability of the latter.

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Editor A.Dolinich

Compiled by A. Andreev Tehred V. Kadar

Order 2276/37 Circulation 880 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Proofreader V.Sinitska

Claims (1)

A VIBRATOR, containing mass, an elastic element, a device for attaching it to the object, an electric motor and a cable connecting the motor shaft to the mass, about t ^- kicking in that, in order to increase efficiency, the device for attaching the elastic element is made in the form of a horizontally mounted frame, mass in the form of goods with through holes, an elastic element - in the form of a string passing through cargo openings,. one end of which is fixed to the frame, and the vibration damper is equipped with another electric motor mounted on the frame with a rod on which the other end of the string is wound, and springs installed between the loads and connected to them. / **. S FIG. 1 122