SU1442745A2 - Pneumatic elastic element - Google Patents

Abstract

The invention relates to mechanical engineering and can be used for vibration protection of various kinds of objects. The aim of the invention is to increase the damping properties in the low-frequency range of vibration loads by using an additional chamber with two-way valves. During the smooth course of compression, the additional rubber-cord on the shell 7 first works and the air flows through the throttle holes 6 into the main shell 1. Then the valves 9 block the throttle holes 6 and the damping occurs in steps. 1 il.

Description

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The invention relates to mechanical engineering, can be used for vibration protection of various kinds of objects and is an improvement of the pneumatic elastic element according to the author. St. No. 1110963.

The purpose of the invention is to increase the damping properties in the low-frequency range of vibration loads by using an additional chamber with two-way valves.

The drawing shows a pneumatic elastic element, a longitudinal section.

The pneumatic elastic element contains a main rubber-cord shell connected to the base 2, in which the damper chamber 3 and the battery chamber 4 are located. On top of this, the rubber-cord shell is attached to the main support plate 5, in which throttle channels 6 are made. an additional rubber-clad shell 7, on the upper end of which an additional support plate 8 is installed. In the throttle channels 6 there are installed two-way valves 9 connected by means of spring (rubber ) suspensions 10 with an additional support plate 8. On the main support plate 5, stops 11 are installed, periodically interacting with valve 12 of the accumulator chamber 4.

Pneumatic elastic element works as follows.

In the static position, the air pressure in the rubber-cord shells 1 and 7, the damper chamber 3 and the accumulator chamber 4 are the same. With a smooth course of compression, the air pressure in the additional rubber-casing sheath 7 increases, air begins to flow through the throttle channels 6. At the same time, the valves 9 fixed on rubber suspensions 10 to the additional support plate 8 begin to move downwards. As a result, the gap between the valves 9 and the walls of the throttle channels

The bb begins to decrease, gradually closing off the channels 6. After the throttle channels b are closed by the valves 9, the pressure in the additional rubber-casing shell 7, which is transmitted to the main support plate 5, increases, and the main rubber-sheath 1 is put into operation. the account of the smooth flow of air jets through the throttle channels b with the valves 9 from the additional rubber-casing sheath 7 into the main rubber-cord casing with the subsequent closing of the valves 9.

With a smooth recoil, there is a slow decrease in air pressure in the additional rubber casing 7. The main support plate rises along with the valves 9, changing the gap in the throttle channels b with the valves 9, which leads to air damping as it flows from the main rubber casing I to the additional 7 In the following, the cycle is repeated. With a sharp course of compression and recoil, the proposed device works similarly to the known.

Claims (1)

Invention Formula Pneumatic elastic element according to ed. St. No. II10963, characterized in that. In order to increase the damping properties in the low-frequency range of vibration loads, throttle channels are made in the base plate, and the elastic element is provided with an additional support plate located between it and the main support plate, an additional rubber-cord shell communicated with the main one by means of a throttle channel; in the latter, valves of double-acting and associated with them and an additional base plate adjustable spring suspensions.