RU19886U1 - Thrust BEARING SLIDING ASSEMBLY - Google Patents

Abstract

Thrust sub-pin sliding unit

The utility model refers to the overburden of threading, namely to the most common knots of skidding, but can be used in friction knots of machines and mechanisms.

The technical problem to which the utility model has been aimed is the introduction of the load-bearing ability of the bearing unit by maintaining the sonosity of its rubbed surfaces.

This technical problem is solved due to the fact that in the thrust bearing assembly, which contains a housing, a segment assembly with self-aligning segmeggs, a unitary disk mounted on a vapu, and an intermediate element made with an annular supporting piece along the center of the pressure between the lubricant and and a thrust disk, the intermediate element is made in the form of a holder and is installed with a gap covering all non-working surfaces of the thrust disk, and a segment assembly made in the form of a mogu a block consisting of an axially straining ring in which the self-aligning segments are located, and mounted with a gap covering all non-working surfaces of the segment assembly, in a specially made recess in the root so that the back of the segment assembly

abstract

relies on a narrow annular protrusion, BbiiKMHeFnibni at the bottom of the notch but the line of the pressure centers. 3 head n f-ly, 3 Fig.

Description

2001113791

eHiliiillliliiliilf Persistent hemlock knot chip 1

The utility model relates to the field of mechanical engineering, namely to the} Т1орнгм bearing-sliding units, and can be used in the friction units of the matpin and mechanisms.

Known is a unary sliding bearing unit containing a bearing, a thrust disk mounted on a fia shaft and resting on self-aligning segments on radial ribs placed on intermediate elements with radial bearing protrusions (US Patent No. 3764, nickname CL 308.160, 1973). .

The disadvantage of this design is that an intermediate element with a radial support bearing protrusion for each individual segment does not provide nozzle compartments of segmepts and flatness of the working surface of the disk, which leads to a reduction in the load capacity of the node unit.

Known persistent podshigpshkovy slip node containing a housing, a disk, motggirovanny on VA. and abuts on segments that are self-mounted on radial ribs, and an intermediate element made in the form of an annular disk with an annular supporting protrusion, mounted between the shaft and the thrust disk or between the segments and the housing (see USSR author's certificate No. 562680, IPC F 16 С 17 / 04 dated 08/13/73).

IPC F 16C 17/04

This technical decision leads to a significant reduction in the deformations of the rubbing surfaces, since. when there is hydrodynamic pressure in the lubricating layer, which tends to deform the unoriented disk and segments, the moment creating, in the presence of an intermediate link with an annular supporting protrusion, is significantly less than in the sub-Nipple assembly with an intermediate element with a radial protrusion under each segment.

However, even such a construction of the bearing assembly does not completely solve the problem of ensuring the flatness of the malfunctioning P01} surface segments and the thrust disk, that is, the deformation of the friction surfaces of the rotor disk and the wear segments as a result of their heating and uneven distribution of heat in the thickness of these working elements. Cooling of the latter is possible only from the side of their non-working surfaces, which leads to an even greater unevenness in the distribution of heat, and, consequently, to a greater curvature of the plane of the rubbing surfaces.

A technical solution is known (see Japanese Patent Mi 52 - 2050, MTZh F16 C 17/06), where they try to solve this problem by completely abandoning the cooling bearing segments and even insulating them. When heated from friction, the segments expand, but as a result of the uniform distribution of heat throughout the thickness of the megallah, they do not lose their shape and retain the flatness of the working novehgusty. However isolated

from each other, the segments are located under different conditions of heating and expansion, since they have a loosened mass and a different wall of pressing against the disk. The carbonaceous disk is not thermally insulated and is still subject to deformation from uneven heating.

For the closest analogue to the claimed technical solution, the invention is adopted The Unorny nodshipikovy slip unit but the USSR copyright certificate JVy 562680.

The technical task for solving which the utility model is directed is to increase the load-bearing capacity of the node-cone unit by preserving the nozzle plane of its rubbing surfaces.

This problem is solved due to the fact that in the unorp bearing bearing assembly is sliding, comprising a housing, a segment assembly with self-aligning septic actuators, a carbon disk mounted on the shaft, and an intermediate element made with an annular support protrusion along the pressure pegs in the lubricating medium and installed between inside and with a thrust disk, the intermediate element is made in the form of a cage and is installed with a gap covering all the idle surfaces of the thrust disk, and the segment assembly, made in the form of a monoblock, yashego of resilient axially napravleshsh colpitis, wherein raspolozheshl samoustapavlivayushiesya segments, and the set with a gap outside ohvatyvayushim all poverhryusti segment assembly in a specially formed recess in the housing so that the rear portion of the segment assembly on the narrow oniraetsya kolneobrazny

vstututt, vgnolnsnngy at the bottom of the recessed but linnn of pressure centers.

Such a design is reduced to a deformation of three parts of the working elements of the bearing.

The gaps covering 1.1 all non-working surfaces of the unary disk and the segment assembly are filled with thermal insulation medium, for example, with gas and liquid lubricants.

The segment unit is made from a single workpiece, which is more technologically advanced.

The essence of the technical solution is claimed by the figures, which depict:

in FIG. 1 - nodigishgikovy node in longitudinal section; in FIG. 2 - view L - A of FIG. 1;

in FIG. 3 - scan of the segment node.

The unary NOD111INNIC slip unit includes a housing 1, a non-tapered element 3 is mounted on the shaft 2 of the nodoshnikov, made in the form of a cage with a gap in which the thrust disk 4 is located. That is, the non-tapered element 3 covers all non-working (non-rubbing) surfaces of the unary disk 4, which contacts the intermediate element 3 through a narrow ring-shaped protrusion 5, executed on the intermediate element 3 along the line of pressure centers in the oil wedge. In the bearing housing 1, a segmented recess is installed

a unit 6 consisting of an axially mounted ring 7 with self-aligning segments 8. which are inextricably connected with it. Self-aligning segments 8. For this, the segment unit 6 is freely removable as a monoblock and is made of a single blank (see Fig. 2 and a scan in Fig. 3). Thus, the entire segment assembly 6, until the friction of segments 8 is plain, consists in oborgm the second non-intermediate element (which serves as a special groove in the housing 1 of the knotter, i.e. 1 itself) with a gap, KOTOpiw covers all non-working (not rubbing) and super-tight segment node 6. Leans segment node 6 with its back side on a narrow annular protrusion 9, extruded in a special hole on the housing of the bearing but LRSHNI pressure centers in the oil wedge. The gaps between the thrust disk 4 and the intermediate element 3, between the segment assembly 6 and the corne I are filled with heat-insulating medium 10, which can serve as a lubricant or the medium pumped by the pump.

Works persistn1 nodnikovy node sliding as follows. When the shaft rotates, hydrodynamic pressure arises in the lubricating layer, but in the action of which the segments 8 are installed at a certain angle, forming a hydraulic bearing wedge. During the rotation of the shaft, heating and the allocation of the tench by the friction (working) surfaces of the uprush disk 4 and the segments of the node 6 takes place. But since the segment node 6, as well as the thrust disk 4, are monolithic elements and are enclosed in lutolol 1O11, there are clips, when heated in

In the process of work, these elements will heat up evenly over their volume, which reduces distortion (distortion) of the pix shape, and therefore the flatness of their working (rubbing) surfaces to a minimum.

As a result of the use of this technical solution, the load capacity of the no-dowel unit is increased, which can be widely used 1 in pumps, compressors, turbines and other devices. The industrial applicability is obvious. Conducted experiments have proved the effectiveness of the proposed solution. The device can be performed at any enterprise that manufactures bearing assemblies without additional special equipment.

The listed features differ in technical solution from irototin and determine whether this solution meets the requirements of the model.

Claims (3)

1. Thrust bearing assembly, comprising a housing, a segment assembly with self-aligning segments, a thrust disk mounted on the shaft, and an intermediate element made with an annular support protrusion along the line of pressure centers in the lubricating medium and installed between the shaft and the thrust disk, characterized in that the intermediate element is made in the form of a cage and is installed with a gap covering all non-working surfaces of the thrust disk, and a segment assembly made in the form of a monoblock consisting of a spring in the axle ohm direction of the ring, in which there are self-aligning segments, and set with the gap covering all outside surface segment assembly in a specially formed recess in the housing so that the rear portion of the segment assembly is supported on a narrow annular projection formed on the recess bottom by the pressure line of centers.  2. The device according to claim 1, characterized in that the gaps covering all non-working surfaces of the thrust disc and the segment assembly are filled with a heat insulating medium, for example, gas or liquid lubricant. 3. The device according to claims 1 and 2, characterized in that the segment node is made of a single workpiece.