SU589479A1 - Pneumatic shock absorber - Google Patents

Description

(54) PNEUMODIC

The invention can be used in many areas of the national economy in the vibration isolation of various devices.

Known shock absorber, comprising a housing

with two cavities, interconnected by throttling holes, a piston and an automatic controller.

Such a shock absorber has low damping properties, especially near resonance.

The closest to the invention to the technical essence and the achieved result is a pneumatic shock absorber, comprising a housing divided by a partition into two interconnected by means of a throttling opening of the chamber, one of which is a damper and another working piston installed in the working chamber a cavity, which is an injection chamber, and associated with the rod.

The disadvantage of this shock absorber is inefficient damping in a mode close to resonant.

The aim of the invention is to improve the damping at the resonance.

This goal is achieved due to the fact that the proposed pneumo-m.

A variable resistance choke made in the form of a sleeve of porous material installed in the throttle bore. The drawing shows schematically the described pneumoshock, incision.

The pneumatic shock absorber comprises a housing 1 divided by a partition 2 into two chambers connected by a throttling opening 3, a damping 4, and a working 5, a piston 6 installed in the working chamber 5 with a cavity 7, which is connected to a rod 8, and a throttle variable resistance, made in the form of a sleeve 9, and an automatic regulator 10. The air shock absorber operates as follows

in a way.

At the initial moment, the piston 6 is in the lower position and, through the feedback lever 11, moves the control spool 12 of the automatic regulator 10 also to the lower position, connecting the air flow line 13

with the working chamber 5 through the discharge chamber 7. As the chambers are filled with compressed air, the piston 6 is raised and the spool 12 closes the channel 14 in the regulator housing 10, reducing the access of compressed air to the chambers,

Claims (1)

and fully opens the variable resistance choke 9, connecting the working 5 and damping 4 chambers. As the load on the piston 6 increases, it moves downward with the rod 8. In this case, the spool 12 also lowers and slightly opens the channel 14 in the body of the automatic regulator, injects compressed air into the chambers 7, 5, 4 until the piston returns to the specified position (initial), and the rod 8 blocks the hole 3 in the sleeve 9 resulting in a change in the gas-dynamic resistance to the flow of gas, which increases the damping effect on the resonance. Claims. A pneumatic shock absorber comprising a housing divided by a partition into two interconnected by means of a throttling opening of the chamber, one of which is damper and the other working, a piston installed in the working chamber, made with a cavity that is an injection chamber, and associated with the rod and an automatic regulator, characterized in that, in order to improve the damping at the resonance, it is provided with a variable resistance choke, made in the form of a sleeve of porous material installed in the throttle valve. miles.