SU1682677A2 - Hydraulic shock absorber - Google Patents

Abstract

The invention relates to machine building, namely, to means of vibration protection, mainly to damping elements of transport and traction machine suspensions. The aim of the invention is to increase reliability by eliminating the ingress of air into cavities filled with liquid. To fill the working fluid, a hydraulic shock absorber with extended stem 3 is mounted vertically, the main valve 6, and the spring-loaded piston 8 are dismantled. Through the compensation chamber 5, the working fluid is poured into the cavities of the housing 1 and the cylinder 2. After the latter and the necessary part of the compensation chamber 5 are completely filled, a spring-loaded piston 8 with an open drainage hole 9 is installed to the level of the working fluid, after which the drainage hole is closed by the stopper 10 and the spring 7 is installed .1 il.

Description

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The invention relates to mechanical engineering, in particular, to means of vibration protection, mainly to damping elements of suspensions of transport and traction machines, and is an improvement of the invention according to the author. No. 1293398.

The purpose of the invention is to increase reliability by eliminating the ingress of air into cavities filled with liquid.

In the drawing, a hydraulic shock absorber is shown, the rrdol section.

The hydraulic shock absorber includes a housing 1, a cylinder 2, a piston rod 3 arranged therein with a piston 4, bypass plate valves (not shown); mounted on the piston 4 and interconnecting the cavity of the cylinder 2, the compensation chamber 5 and the main valve 6 spring-loaded in the axial direction, installed in the housing 1 and connecting the cavity of the cylinder 2 with the compensation chamber 5, an additional spring-loaded valve (not shown) installed in the rod 3 and communicated with the inlet of one of the relief valves, seats (not shown}, installed with the possibility of axial movement in the holes of the rod 3 and the housing 1 and interacting with the main b and additional valves and elastic pro frets (not shown) mounted in series with the seats on the side opposite to the location of the corresponding spring-loaded valves, the piston 8 with the drainage hole 9 and the plug 10 installed in the latter, spring-loaded 7 in the axial direction, positioned in the compensation chamber 5.

Hydraulic shock absorber works as follows.

During compression, fluid from under the piston space is displaced into the extra piston space through the additional

spring loaded valve. The amount of fluid compensating for the volume of the rod 3 is displaced and the compensation chamber through the main valve 6, while moving

spring-loaded piston 8, compressing the spring 7, the length of which is longer than the length of the compensation chamber 5, which ensures the work of the latter even with leakage of the working fluid, the gas in the compensation chamber 5

it is compressed and its pressure can be regulated by means of a fitting 11c with a shut-off valve connected to the pneumatic line 12 of the machine.

For filling with working fluid

a hydraulic shock absorber with extended stem 3 is installed vertically by the housing 1 downwards; the main valve 6, the spring 7 and the spring-loaded piston 8 are dismantled. Through the compensation chamber

5, the working fluid is poured into the cavities of the housing 1 and the cylinder 2, after the latter are completely filled and the necessary part of the compensation chamber 5 is installed, the spring-loaded piston 8 is open

drainage hole 9 to the level of the working fluid, after which the drainage hole is closed with a plug 10, which prevents air from entering the cavities filled with liquid, i.e. excludes the possibility

emulsifying the fluid during operation, and then the spring 7 is installed.

Claims (1)

Claims of the invention Hydraulic shock absorber according to auth.St. No. 1293398, characterized in that, in order to increase reliability by eliminating the ingress of air into the cavities filled with liquid, it is equipped with a housing placed in the compensation chamber axially spring-loaded piston with drainage hole and plug installed in the latter.