SU1326815A1 - Plastic shock absorber - Google Patents

Abstract

The invention relates to shock absorbers, the principle of which is based on the use of material deformation, and can be used in devices requiring protection from the effects of shock loads. The aim of the invention is to increase the reliability of operation by increasing the longitudinal and lateral stability of the shock absorber. Execution of a shock absorber of a deformable element from individual deformable parts 5 installed between flanges 2 and 4 with uniform orientation around the circumference of the maximum wall thickness of deformable parts 5 with profiled, in particular spherical, making surfaces 9 of conjugation of deformable parts 5 between themselves and with flanges 2 and 4 When deforming the shock absorber, it increases its longitudinal and lateral stability, and also allows you to recruit from the deformable parts any desired stroke of the shock absorber. 1 hp f-ly, 4 ill. (C

Description

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The invention relates to shock absorbers, the principle of which is based on the use of aglastic deformation of the material, and can be used in devices that require protection from the effects of shock loads.

The aim of the invention is to increase the reliability of operation by increasing the longitudinal and transverse stability of the shock absorber.

1 shows a shock absorber providing protection against compressive shock loads, a longitudinal section; Figure 2 is the same after perception of a shock load; Fig. 3 shows a shock absorber providing protection against tensile shock loads, a cut; 4 is the same after the perception of a shock load.

A mechanical shock absorber contains a guide rod 1 with a flange 2, a telescopically connected rod 3 with a flange 4 and a deformable element made of separate ones; deformed parts 5 in the form of hollow cylinders with annular projections 6 on the outer surface mounted between flanges 2 and 4 with a uniform orientation around the circumference of the maximum wall thickness of the deformable parts 5.

For orientation on the annular protrusions 6 of the deformable parts 5, risks 7 are applied from the side of the maximum wall thickness. The portions 8 of the deformable parts 5 between the annular projections 6 are working. The mating surfaces 9 of the deformable parts 5 between themselves and with the flanges 2 and 4 are made profiled, which ensures the alignment of the guide rod I and the telescopically connected rod 3 with the deformable parts 5.

The profiled mating surfaces 9 are preferably spherical, which provides less effect on the alignment of the guide rod 1 and the rod 3 when the shock absorber is in operation.

 The shock absorber works as follows. When a load is applied to the flanges 2 and 4, the working sections 8 of the deformable parts 5 are deformed (plastic, buckling).

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In the case of identical execution of the working sections 8, their deformation begins simultaneously. At the same time, the process of deformation from beginning to end takes place practically with a constant force of resistance to plastic deformation. The rod 3 in the process of deformation moves inside the guide rod 1, ensuring good stability of the shock absorber in shear and bending under the action of off-axis loads.

When spherical surfaces 9 are machined between flanges 2 and 4 with the ends of the deformable parts 5, during the deformation process, the free rotation of the ends of the deformable parts 5 occurs; the influence of the shear forces arising from the curvature of the formed parts on the coaxiality of the telescopically connected guide rod 1 and the rod 3.

Thus, the invention allows, changing in different ways the sizes of working sections of deformable parts, to obtain various forms of depreciation characteristics with the increasing dependence of force on the course of depreciation, eliminates the overall curvature of the deformable element and increase its stability under compression, which increases the reliability of the shock absorber, as well as provides the possibility of a set of their deformable parts of any desired stroke of the shock absorber.

Claims (1)

1. Plastic shock absorber, containing: a guide rod with a flange, a telescopically connected rod with a cylindrical flange and a deformable element made in the form of a hollow cylinder with annular projections on the outer surface and mounted between the flanges, characterized in that in order to increase the reliability of operation, the deformable element is made of separate deformable parts, installed with a uniform orientation around the circumference of the maximum thickness the walls of the deformable parts, and the mating surfaces of the deformable parts between themselves and with the supporting flanges are made of shaped. 2 The shock absorber according to claim 1, 1, and t l in that the profiled surface of the conjugation is a sphere. i and fg / g.2 Shig. Editor N.Gorvat Compiled by E. Savostin Tehred V.Kadar Proofreader S.Shekmar Order 3263/31 Tgdrazh 811Subscription VSHMS of the USSR State Committee for inventions and discoveries .113035, Moscow, Zh-35, Rautvska nab. A / 5 Production and printing company, Uzhgorod, st. Project, 4 FIG.