SU740539A1 - Pneumatic shock-absorber - Google Patents

Description

(54) PNEUMATIC SHOCK ABSORBER

This invention relates to trans compression and damping systems. Nortic means, and more precisely, to rubber-lined pneumo-shock absorbers.

Known pneumatic shock absorbers containing rubber-shell, enclosed mezhtsu two clamping flanges. Which interact with levers (balancers), the casing being connected by a main line to the make-up system l.

Despite the fact that in this device it is possible to create various load characteristics of the shock absorber, for example, by changing the pressure of the air or arms (balancers) arms, this device differs sufficiently in HocTbKj precisely because of the presence of this makeup theme and levers.

Also known is a pneumatic shock absorber containing a rubber-cord casing filled with gas, which is divided into cavities by clamping rings enclosing it and provided with pressure flanges 2j installed along the edges.

However, such an arrangement has one load characteristic, and changing it requires dismantling and reloading the shock absorber.

The purpose of the invention is to provide the possibility of changing the load characteristics of a pneumatic shock absorber (without dismantling and recharging).

This goal is achieved by the fact that, in a pneumatic shock absorber containing a rubber-cord casing filled with gas, divided into cavities by captive rings enclosing it, equipped with flanges mounted at the edges on at least one flange mounted with the possibility of shifting in the axial direction The cup is fixed in several positions relative to the flange and interacting with the closest to which tight ring.

FIG. 1 is a pneumatic elastic element, general view; in fig. 2 lower position stpkana relatively

flange; in fig. 3 - load characteristics.

The pneumatic shock absorber is a rubber "Ordnzgy" multi-sheathed shell I, reinforced bortam in clamping flanges 2 and covered by tension rings 3 and 4. The clamping flanges have earrings 5 for installing pneumatic elements in the suspension system of the transport vehicle. On the one on the clamp; The flanges are mounted on the cover cup 6, which has a number of fixed positions relative to the flange.

The operation of the pneumatic shock absorber is as follows.

When the cup 6 is placed in the upper position relative to the flange between the cup 6 and the clamping ring 4, a guaranteed clearance remains. In this case, all the cavities of the rubber-cord shell work. The load characteristic is the flatter (Fig. 3, curve

but)..

When installing glass 6 in average temperature, relative flange is elastic

the element under load from the equilibrium position has a gap between the cup 6 and the clamp ring 4. During compression, this gap decreases and at a certain stroke reaches zero value. The cavity, enclosed by the cup 6 and the clamping ring 4, is excluded from the work. Upon further compression of the pneumoelement, only the remaining unclosed cavities of the shell work, which leads to a tightening of the load characteristic at the end of the compression stroke (Fig. 3, curve b).

When installing the cup b to the lowest position relative to :, there is no static load between the cup 6 and the clamping ring 4 of the aaooor or the clamp ring 4 is easily fixed with the cover cup 6 by some device (Fig. 2). in the case of a cavity, the cups 6 and the clamping ring 4 are closed, are excluded from the operation. During oscillations, the dynamic characteristic is provided only by the remaining cavities, which leads to its tightening throughout the entire working stroke of the pneumatic element (Fig. 3, curve c).

The proposed shock absorber, in comparison with the known pneumatic shock absorbers, has a simplicity of design and, by simple reconfiguration, allows to obtain various load characteristics.

Claims (1)

1. The patent of Switzerland No. 374559, cl. 63О41, published. 1964. 2, German Patent No. 475626, cl. 63 C 4 1, published. 1929 (prototype). / i, 740539 ae /) yju: a a S. cm & cm