RU94044774A - Energy absorber - Google Patents

Abstract

FIELD: mechanical engineering; impact energy absorber devices. SUBSTANCE: energy absorber has housing where bush and deforming rod are coaxially arranged. Deforming rod has radial bead and bush has square thread on its inner surface whose flute receives spiral insert of similar profile at axial clearance; insert is mounted on rod and its end rests against bead of rod. Innovation of invention: availability of spiral deformable insert; diameter of rod bead is equal to inner diameter of bush thread; spiral insert is mounted on rod at initial radial pressure. Spiral insert may be of constant or varying section lengthwise. Besides that, longitudinal groove may be provided over entire extended length of spiral insert. EFFECT: operation of energy absorber in two directions; constant and varying absorbing force; energy absorber may be reused after replacement of spiral insert. 3 cl, 3 dwg

Claims (1)

The invention relates to the field of engineering, in particular to devices for absorbing impact energy. The energy absorber contains a housing, a sleeve coaxially placed in it and a deforming rod with a radial shoulder, a rectangular thread made on the inner surface of the sleeve, in the groove of which a spiral insert of a similar profile mounted on the rod is placed on the rod, abutting against the shaft shoulder. New in the energy absorber: the implementation of a deformable spiral insert, the diameter of the shaft collar is equal to the inner diameter of the sleeve thread, and the spiral insert is mounted on the rod with an initial radial pressure. The spiral insert can be made of constant or variable cross-section along the length. In addition, a longitudinal groove can be made along the entire length of the sweep of the spiral insert. EFFECT: operation of the energy absorber in two directions, the possibility of providing a constant and variable depreciation force, as well as repeated use of the energy absorber with the replacement of the spiral insert.