RU2673435C2 - Hybrid pneumatic spring - Google Patents

Abstract

FIELD: machine building.SUBSTANCE: invention relates to machine building. Hybrid pneumatic spring is a frame, that is put on the spiral spring, which keeps the pneumatic chambers filled with gas in the interturn space of the spring. Frame can include several cavities for pneumatic chambers. Presence of an independent regulation of the pressure in the chambers makes it possible to create a nonlinear resistance to compression of the spring. Space inside the spring can remain free, allowing the internal placement of shock absorbers, bumpers, shafts and drives.EFFECT: increase in the reliability and comfort level of the suspension of vehicles, an increase in their performance characteristics with minimal complication of the design is achieved.1 cl, 5 dwg

Description

Using:

in vehicle suspensions and designs including coil springs.

The inventive cover is installed on a spiral spring, fixing inside itself and the inter-turn space of the spring pneumatic chamber.

The present invention relates to the field of mechanical engineering and can be used in the suspension of automobile, railway, air transport, construction equipment, motor vehicles, cycle equipment, etc. for the rapid change of elasticity parameters and geometry of suspensions and other structures using coil springs.

Analogs of the invention are unknown.

The aim of the invention is to increase the reliability and comfort level of the suspension of vehicles, expanding their operational properties with minimal complication of construction, minimal cost and the ability to modify existing machines and mechanisms.

This goal is achieved by installing a special cover in the inter-turn space of the spiral spring, which holds the pneumatic chamber in its inter-turn space, which acquires a spiral shape during installation on the spring.

In FIG. 1 shows the simplest modification of the cover which is two long fabric pipes sewn together. Throughout the pipe sides there are locks of the “lightning” type 3. The cover is put on the spring of the assembled suspension (for example, a car) and fixed on the coil of the spring with a lightning 3. A pneumatic chamber 4 (or several chambers, fits into the corresponding cavity of the cover). After laying the chamber, the corresponding cavity of the cover is closed with a zipper and gas pressure is supplied to the chamber.

In FIG. 2 shows a cover mounted on a spiral spring. In FIG. 3 shows a spring without a cover. By adjusting the gas pressure in the chamber 4, it is possible to change the suspension stroke and the properties of the spring. In FIG. 4 shows a top view. To reduce the effect of self-straightening, the pneumatic chamber can have many tightening rings 5 (forced constrictions) and have a corrugated appearance.

When using a cover with several cavities for the pneumatic chambers of FIG. 5, it is possible to separately regulate the pressure in each chamber 4 or 6. This will allow changing not only the suspension travel, but also the smoothness of its travel. It is possible to specify a complex, nonlinear dependence of the compression ratio of the suspension on the degree of compression force.

For springs with a large inter-turn space (Fig. 5), covers 1 with a complex shape are used. Figure 5 presents the frame (case) with two cavities for pneumatic chambers 4 and two options for filling them. The upper version represents two separate pneumatic chambers 4 - one in each cavity of the cover. The lower version is the filling of the cavities of the cover with many tubular chambers 6. In this case, the effect of "self-straightening" of the cameras is lower than in the upper version and the cameras do not exert additional forces on the cover.

It is important to note that the coil spring continues to bear the main load. The user of a standard car can independently install the frame (cover) on the springs of his car and get the opportunity to increase the clearance of the car on the go (requires an air compressor and control system). However, by installing shortened springs on the car, the user receives a fully functional suspension with the ability to control clearance in the entire range available for suspension. And in any case, with the complete destruction of the frame or depressurization of all pneumatic chambers, the suspension remains operational, bringing the car to the level of regular clearance.

Claims (1)

A hybrid pneumatic spring is a frame worn on a coil spring, holding pneumatic chambers filled with gas in the inter-turn space of the spring, the frame may include several cavities for pneumatic chambers, independent pressure adjustment in which allows non-linear compression resistance of the spring, the space inside the spring can remain free, allowing the internal placement of shock absorbers, bumpers, shafts and drives.

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