SU442322A1 - Throttling device - Google Patents

Description

one

FIELD OF THE INVENTION The invention relates to mechanical engineering, in particular to supports using the hydrostatic principle of lubrication.

A throttling device for electrostatic supports is known, containing a regulating element in the form of a glass mounted by means of an elastic shank with possible axial movement in the housing with a gap forming a throttling slot communicating through the channels with the support pockets, and one of the ends through the hole in the housing with a lubricant source pressure.

The purpose of the invention is to improve the performance and increase the reliability of the device.

For this, the surface of the body and the glasses that form the choke slot are made conical, and the bottom of the glass has openings for supplying lubricant to the other end of the slot, when careful on the inner surface of the core

2

The cameras and the longitudinal grooves placed between them are sewed in at the exit of the channels.

On SHIG.1 shows the proposed choke device; on

FIG. 2 is a section along the line A-A in FIG.

In the case there is mounted a conical cup 2 with a gap 3, which plays the role of a throttling gap, by means of an elastic shank 4 with the possibility of axial movement; Square 5 on the shank 4 serves to adjust the width of the throttling gap 3. Through the hole 6, made in the body, and the hole 7, made in the bottom of the glass 2, lubricant under pressure from two sides is supplied to the throttles / holes of the slot 3 On the inner surface of the body I, forming a throttling gap

I 3, the chambers 8 are made together with the pockets of the hydrostatic support through the channels 9, and the longitudinal

 The knobs 10, the preprocessing of the lubricant flow to the chamber 8. The lubricant from the pressure source enters the opening 6, the opening 7 and the grooves 10, and then through the throttling slot 3 into the chambers 8 and into the pockets of the hydraulic support. The device works in the following way. When the pressure in the support pockets changes, the pressures in the corresponding chambers 8 of the choke device change. Under the action of the pressure difference in the chambers, the resilient stem 4 allows the cone glass 2 to bend, to change the value of the throttling slot 3 so that the carrying capacity of the pockets to which the load is currently directed due to the additional flow in them pockets that do not absorb the load fall due to a decrease in the supply of lubricant to them. A restoring force appears which, during the operation of the hydrostatic support, constantly reacts to a change in load. The change of the characteristics of the throttling device or the characteristics of the support is carried out by axial movement of the conical sleeve relative to the body. Knowing the angle of taper of the glass, and its axial displacement t (which can be measured using an indicator), it is easy to set the required width of the throttling gap jilfi. fix the cone cup with the nuts in the desired position. PRSHMEG IZOERETSH Throttling device for mechastatic supports containing a regulating element in the form of a cup mounted by means of an elastic shank with the possibility of axial movement in the housing with a gap, which forms through the channels with the pockets of the outlet, through one of the ends through the hole in the outlet housing. under pressure, characterized in that, in order to improve performance and increase the reliability of the device, the surfaces of the body and glass, forming the throttle gap, you olneny conical and cup bottom has holes for supplying lubricant to the other end slot, wherein on the inner shell in place poverhnooti exit channels formed chamber and disposed between the longitudinal grooves. In the pocket of the hydrostat t u iecKo and support

fpue.l In the carp hympmamu4ecf ou onopi i

eight

FIG. 2

Into the hydrostatic bearing chamber

ten