SU1527425A2 - Shock-absorber - Google Patents

Abstract

THE INVENTION IS RELATED TO VIBRATION-AND-INSULATING TECHNIQUE AND CAN BE USED FOR THE DECOMPOSITION OF CONSTRUCTION ELEMENTS IN HEAVY LOADED MACHINES. THE PURPOSE OF THE INVENTION IS THE IMPROVEMENT OF THE AMORTIZATION PROPERTIES DURING A MORE THAN UNIFORM DEFORMATION OF THE WORKING PART OF SLEEVES 1 FILLERS 2 LONG. This is achieved by shock absorbers THAT WALL THICKNESS WORKING OF SLEEVES 1 defined by the formula: H = P / 2 * 98PRΣ ^_T. (1+ (3 * 98H _H -1) ^. @ ^-2 @ ^{F (} @ ^Z @ ^- L ^{) / (1-} @ ^{) R} / (1- * 98H _H ), where H is the wall thickness of the working part of the sleeves 1

ν _n - Punch coefficient of the filler material 2

P - set maximum piston load

σ _t - the specified yield strength of the material of the sleeves 2

F - coefficient of friction of a pair of filler 2 - sleeve 1, R - inner radius of sleeve 1

Z - longitudinal coordinate - axis of symmetry of the shock absorber

L _n - half the length of the fillers 2. The invention provides a more uniform deformation of the working part of the sleeve 1 along the length. 1 il.

Description

the fact that in the shock absorber the wall thickness of the working part of the sleeves 1 is defined by et-, c by the formula h P / Zfr-S d + -2VHfr / z (((-VHytr

-De / (1 -) „),

where h is the wall thickness of the working part of the sleeves 1; n is the Poisson's ratio of the material of the fillers 2; Р - set maximum piston load;

b} the specified yield strength of the material of the sleeves 2; f - coefficient of friction of a pair of filler 2 - sleeve 1; g - the inner radius of the sleeve 1; Z - longitudinal coordinate - axis of symmetry of the shock absorber; 1 and the half-length of the fillers 2. The invention provides a more uniform deformation of the working part of the sleeve 1 along the length. 1 ilC

The invention relates to vibration insulating technology, can be used for damping structural elements in heavy loaded machines and mechanisms, and is an improvement to the shock absorber according to the author. St. W.

The purpose of the invention is to increase the depreciation properties due to a more uniform deformation of the working part of the sleeve of the elastic element along the length.

The drawing shows the proposed shock absorber.

The shock absorber contains elastic elements in the form of sleeves 1, fillers 2 and pistons 3. Pistons 3 adjacent sleeves of elastic elements facing each other are rigidly connected by means of themselves.

The shock absorber works as follows.

An external load applied to the extreme pistons m 3 compresses the filler 2, in sleeves 1 transforms the longitudinal displacements of the pistons 3 into radial deformations of the sleeves 1. Deforming within elastic deformations, the sleeve 1 accumulates energy, and when the impulse of the external load decreases, the pistons 3 return to their original position .

Since the sleeves 1 are arranged in series and are made with a length defined by the expression

R

 2 (- In

ГР „г2

one).

g f

P 1

the inner radius of the sleeve; coefficient of friction between on, filler and bushing; target load; initial piston stroke length;

PO is the external pressure (constant value);

d is the internal diameter of the sleeve 1, thereby increasing the draft of the shock absorber as a whole. When performing the wall thickness of the working part of the sleeve by the expression

-2X {/ g / -en

R ,. - 1 g -

  21gG & t (1

where h is the sleeve toli;

) „- Poisson's ratio of the material of the fillers; i |

Р - set maximum piston load;

6 - the specified yield strength of the material of the sleeves;

f is the coefficient of friction of the pair filler – bushing;

g - the inner radius of the sleeve; Z - longitudinal coordinate - axis

symmetry of the shock absorber; 1c - half the length of the fillers, provides an additional increase in the draft of the shock absorber due to more uniform deformation of the working part of the sleeve along the length.

Claims (1)

Invention Formula Shock absorber on the author. No. characterized in that, in order to increase the depreciation properties, the walls of the sleeves of the elastic elements are made of variable thickness, determined from the ratio Mr.-2 / -Bn -1777 - Mr. J .... R .. (and-He.: L. 271GBg 1 where h is the wall thickness of the sleeve; Р - set maximum piston load; 51527 256 g - internal ra- bleus of the bushings: the coefficient of friction of the pair on b t - the specified yield point — filling - sleeve; sleeve material; Z - longitudinal coordinate - axis - Poisson's ratio of the shock absorber mate-symmetry; rial fillers; 1 half the length of fillers.