SU1456244A1 - Pneumatic vibration exciter - Google Patents

Abstract

The invention relates to vibration devices and can be used in drives of transport and technological devices in mining, construction industry, engineering and other sectors of the national economy. The aim of the invention is to increase efficiency by increasing the amplitude of oscillations of the working body. When the compressed gas is supplied through the channel 8 into the annular chamber-valve 4, the central working chamber 10 is formed. Compressed gas, which enters through the channel 3 into the central working chamber 10, sets the working unit 9 into motion. The upward movement of the operating element 9 occurs until it is detached from the annular valve chamber 4 and the compressed gas is not discharged from the central operating chamber 10 to the atmosphere. After that, the working body 9 is pressed against the annular chamber-valve 4 and the cycle is repeated. 1 hp f-ly. 1 il. S 1sl

Description

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8 7

The invention relates to vibration devices and can be used in the drives of transport and technological devices in the mining, construction, mechanical engineering and other sectors of the national economy.

The aim of the invention is to increase efficiency by increasing the amplitude of oscillations of the working member.

The drawing shows a pneumatic vibration exciter.

The vibration exciter comprises a base 1 with a stand 2 fixed on it with an air duct channel 3. A ring chamber-valve 4, made of two parts 5 and 6 of elastic material, is attached to the rack 2. The cavity 7 of the valve chamber 4 is connected to a source (not shown) of compressed air by the channel 8. On the basis of the working body 9 is placed, the chamber-valve 4, the base 1, the ring stand 2 and the working body 9 form a central working chamber 10 connected to a source of compressed a gas (not shown) by the channel 3. From sliding down to the sides, the working body 9 is supported by the supports 11 fixed to the housing 1.

The vibration exciter works as follows

Compressed gas is supplied to the cavity 7 of the annular valve chamber 4 via the channel 8. The chamber-valve 4 abuts against the working body 9, forming the central working chamber 10.

Through the channel 3, compressed gas is supplied to the central working chamber 10 and the working body 9 moves upwards.

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5 0 5 0

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When the camera-valve 4 reaches its extreme upper position, the operating element 9 is separated from it, continuing to rise by inertia, and the compressed gas escapes from the central working chamber 10 to the atmosphere. Working body 9, having made free flight, is lowered onto the chamber-valve 4, pressing it to the base and closing the central working chamber 10. Then the cycle is repeated.

Claims (2)

1. A pneumatic vibration exciter comprising a base, a working body and a hollow annular chamber-valve interposed between them with the ability to interact with a compressed gas supply channel and filled from two interconnected parts of an elastic material, characterized in that, in order to increase efficiency by increasing the amplitude of oscillation of the working body, it is equipped with a rack with a channel rigidly fixed on the base, and the camera-valve is fixed on it. 2. The vibration exciter according to claim 1, characterized in that the areas of the parts of the chamber-valve are determined by the ratio (g, - g,) / (g, - rj 0,2--1, where g is the outer radius of the ring valve chambers; Gr is the inner radius of the part of the annular chamber-valve facing the base; g is the inner radius of the part of the annular chamber-valve facing the working member.