SU1585567A1 - Centrifugal self-oscillation hydraulic vibrator - Google Patents

Abstract

The invention relates to a vibration technique and can be used as a vibration overload exciter when testing devices for vibration resistance and vibration resistance. The purpose of the invention is to increase the efficiency of the hydrovibrator. The centrifugal self-oscillating hydrovibrator includes a housing 1 in which an unbalance 2 is installed, where the pressurized fluid in chamber 5 acts on the valve 6 and opens 14 axial and radial channels 8 with guides. The passage through them, the liquid enters the tangential channel 9, by flowing out of It creates a reactive force that turns the unbalance 2 relative to the support. After the outflow of fluid from the tangential channel 9, the pressure drops and the guides 14 of the spool 6 overlap the axial and radial channels 8. In this centrifugal self-oscillating hydraulic vibrator, it is possible to regulate the amplitude and oscillation frequency of the unbalance 2 and the spool 6 with a screw 10 and change the flow rate, served in the hydrovibrator. 1 il.

Description

The invention relates to designs of centrifugal self-oscillating hydraulic vibrators and can be used as an exciter of vibration overloads when testing devices for vibration resistance and vibration strength.

The purpose of the invention is to increase the efficiency of hydrovibrators.

The drawing shows the design of a centrifugal self-oscillating hydraulic vibrator.

The centrifugal auto-oscillating hydro-vibrator includes a housing 1. in which the unbalance is set 2. Inside the unbalance 2 there are 3 supply and exhaust channels (not shown). In the wall of unbalance 2, a longitudinal hole is made to connect the supply channel 3 with the working chamber 5, in which there is a spool valve 6, made in the form of a cylindrical rod spring-loaded with an adjusting spring 7, with one end of the rod provided with axial and radial channels 8 and installed in the tangential channel 9, and the second end through the spring 7 rests on the adjusting screw 10c with a nut 11 with a lock nut 12. A spool valve 6 is installed in the unbalance guides 13 and the guides 14 of the tangential channel 9. From the ends 2 ebalans closed lids 15, 16 and rotates on bearings 17.

Centrifugal self-oscillating hydrovibrator works as follows.

The liquid under pressure through the channel 3 inlet enters the unbalance 2, then through the hole 4 into the working chamber 5. In the feather ""

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At the initial moment, the axial and radial channels 8 are blocked by the guide 14, but under the action of fluid pressure, the spool valve 6, compressing the spring 7, begins to move downwards and opens the axial and radial channels 8. Fluid entering the tangential channel 9 and flowing out of it creates a reactive a force that rotates the debalance 2 relative to the support 17. After the outflow of fluid from the tangential channel 9, the pressure in chamber 5 drops and the slide valve 6 guides 14 closes the axial and radial channels 8, the pressure in chamber 5 age t, and the process is repeated. The fluid flows out of the hydrovibrator through an orifice (not shown) made on the axis of rotation of the unbalance2.

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Claims (1)

Claims of the invention: A centrifugal auto-oscillating hydro-vibrator comprising a housing with feed and discharge channels of a power carrier and a rotary debalis with axial and tangential channels associated with the feed channel, characterized by the fact that in order to increase work efficiency by expanding the range of operating frequencies and vibration amplitudes, it equipped with a spool valve made in the form of a spring-loaded cylindrical rod mounted in unbalance with the possibility of reciprocating movement, with one the rod end is provided with axial and radial channels and is installed in the tangential channel, and the unbalance has the shape of a cylinder. L