SU1493828A1 - Telescope hydraulic shock absorber - Google Patents

Abstract

The invention relates to mechanical engineering. The purpose of the invention is to improve the efficiency of damping vibrations by optimizing the performance of the shock absorber. The floating piston is a means of controlling the differential compression valve 13 and allows any damping characteristic to be obtained in terms of damping capacity and stiffness. 1 il.

Description

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The invention relates to a device for damping vehicle vibrations.

The purpose of the invention is to improve the efficiency of damping vibrations by optimizing the performance of the shock absorber.

The drawing shows the proposed telescopic hydraulic AM., Longitudinal section.

The telescopic hydraulic shock absorber comprises a housing I, connected via an elastic element 2 movably with the housing I and forming a reservoir 3 with a pneumatic chamber 4, a hollow cover 5, a partition 6 with a throttle system 7 mounted coaxially with the housing 1 working cylinder 8, a piston 9 located therein and a throttle element 11, a cover 12 with a differential compression valve 13 and a relief valve 14, located in the hollow cover 5, a floating piston 1.5 mounted between the springs 16 and 17 and having throttle bores 1 8 and the inlet valve 19.

The shock absorber works as follows.

When the piston 9 moves at a speed of compression, the liquid flows through the throttle element I 1 from the piston cavity into the rod cavity (not indicated) of the cylinder 8. Excess fluid equal to the displacement difference of the displacement volume, through the differential compression valve 13, the throttle system 7 in the partition () and the throttle holes 18 in the floating piston 15 enters the tank 3. At high speeds of the piston 9 for compression, the increase in hydraulic losses in the throttle system 7, the throttling openings 18 of the floating pores 1n 15 leads to an increase in pressure on the control link of the differential compression valve 13, its opening and the associated drop in pressure drop on porsche 9, a significant decrease in the force transmitted to the depreciable object. In addition, with sharp blows, the floating 5 piston 15 receives an additional displacement, creating an additional pressure drop across the control link of the differential valve 13 of compression, increasing the damping efficiency.

During the withdrawal course, the working fluid flows through the inlet valve 19, the throttling system 7, the bypass valves 14 into the piston cavity, into which the fluid from the rod end also flows through the throttle element II.

Installing the floating piston 15 provides any damping characteristic for damping capacity and stiffness.

Claims (1)

Invention Formula A telescopic hydraulic shock absorber containing a hollowed closed lid, axially movable body, elastic element mounted between it and the lid, partition wall mounted in the hollow lid with throttle system, working cylinder coaxial with the ujTOKOM, throttle element and lid mounted differential pressure valve and relief valves and differential pressure control valve, characterized in that, in order to increase the efficiency of the bath, the control means for the differential valve m. of compression, is made in the form of a floating piston in the hollow valve and axially spring-loaded floating piston with throttle bores and inlet valve.