SU1518590A1 - Vibration isolator - Google Patents

Abstract

The invention relates to vibration protection means and can be used to protect electronic equipment from vibration and shock under the conditions of simultaneous effects of linear accelerations. The aim of the invention is to expand the operational capabilities and adjust the amplitude-frequency characteristics of the vibration isolator by providing a predetermined tension of the elastic element. In the vibration isolator, the locking element 4 is made in the form of a stud 5 with oppositely directed threaded sections and sprockets 6 and 7 with a central threaded hole with oppositely directed threads each parallel to each other and forming a screw pair with the stud 5. Using a calibrated key, by rotating the pin, the cables of sections 8 and 9 spanning intermediate element 2 with uniform pitch of loops are tensioned to interact with corresponding asterisks 6 or 7. Thus, the amplitude-frequency characteristics for the whole batch of vibration isolators are reproducible, and if necessary, it is possible to change the resonant frequency of the vibration isolator. 2 Il.

Description

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The invention relates to means of vibration-proofing and can be used to protect radioelectronics and other equipment from vibration shocks under conditions of simultaneous effects of linear accelerations. I The aim of the invention is to expand: the operational capabilities of the control of the amplitude and frequency characteristics of the vibration insulator due to the provision of a given tension of the elastic element.

Figure 1 shows the proposed: insulator, a general view with an axial section} in Figure 2 is the same, the view of the super-: su.

i The vibration isolator consists of a body n in the form of a hollow cylinder, an intermediate element 2 in the form of a ring (annular elastic axis), installed 33 openings of separating washers 3,: fixed in pairs, with equal pitch ia of the internal surface of the body 1, and of the mixing element 4, consisting of a stud 5 with two oppositely: straight threaded sections of two parallel stars 6 and 7 |; counter central opposite ko directed threaded holes, two independent sections 8 and 9: / t1 of the other continuous cable connecting intermediate element 2 with the corresponding: 6 and 7 sprockets through the ring 10, installed: sprockets 6 and 7. 1, a flange 11 is attached to the object at the installation (not shown), and a shock-absorbing object (not shown) is attached to the stud 5.

The assembly of the vibration insulator is as follows.

A body 1 is installed in the fixture with a spacing element 2, then a fixing element 4, consisting of a stud 5 with asterisks 6 and 7, screwed on the stud 5 up to, is fixed in the center of the case f | . After this, sections 8 and 9 of an elastic cable in the form of loops are braided: an eight figure, connecting the inter-; double-day element 2 with corresponding sprockets through rings 10 equal to hbiM loop pitch. The contact of the sections 8 m 9 (coverage) with the intermediate element M 2 takes place between split washers of equal length 3, and with rings

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10 - between the teeth of the corresponding sprockets 6 and 7 "

By pre-assembling and tensioning the cables of sections 8 and 9, the vibration isolator is removed from the device and using a calibrated key by twisting the stud 5, the cables of the independent sections 8 and 9 are finally tensioned by moving the sprockets 6 and 7 along the stud 5 along the threaded sections in opposite directions. After the set tension of the cables of sections 8 and 9 has been reached, the position of the stars 6 and 7 is fixed by the backing (for example, measures, centering or paint).

Vibration isolator works as follows.

Vibration or shock loads are transmitted to: elastic elements in the form of sections 8 and 9 of a continuous cable. Due to their deformation (stretching, bending, twisting), externally kinematic energy is quenched, which provides vibration-proofing of a shock-absorbing object (not shown).

The proposed design of the vibration isolator allows, using calibrated keys, to ensure repeatability of the amplitude-frequency characteristic for the entire batch of vibration isolators or, if necessary, by resizing the key, change the resonant frequency of the vibration isolator.

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Claims (1)

Invention Formula Vibration isolator, comprising a case, an intermediate element in the form of a ring installed in it, fixing the element and an elastic element in the form of a continuous cable, connecting the intermediate and fixing elements, characterized in that in order to expand the operational capabilities and adjust the amplitude-frequency characteristics due to the provision of a predetermined tension of the elastic element, the fixing element is made in the form of a stud with oppositely directed threaded parts and sprockets with a central threaded hole each oppositely directed thread positioned parallel to one another and forming with the screw pin pair, and a continuous rope formed from at least two sections, ohvatyvayu515185906 each intermediate element with an action with a corresponding star-uniform loop pitch for interlocking.