CN203404247U - High-load full-capacity self-aligning roller bearing - Google Patents

Abstract

Provided is a high-load full-capacity self-aligning roller bearing. The high-load full-capacity self-aligning roller bearing mainly comprises an outer ring, an inner ring and rolling bodies. The high-load full-capacity self-aligning roller bearing is characterized in that a spherical circular-arc ball track is arranged on the outer ring, and is used in cooperation with circular-arc-shaped rolling surfaces of the rolling bodies, and the contact rate is 0.99; the inner ring is provided with two spherical circular-arc ball tracks which are used in cooperation with the circular-arc-shaped rolling surfaces of the rolling bodies, and the contact rate is 0.99; a center rib is arranged on the inner ring, and is used in cooperation with sphere base surfaces of the rolling bodies, and point contact is adopted by the matching surface; small ribs are arranged on the two sides of the inner ring respectively, a tiny axial clearance is formed between each small rib and the end face of each rolling body, the rolling bodies are arranged in the internal space of the high-load full-capacity self-aligning roller bearing in a full-capacity mode, and a small clearance exits between every two adjacent rolling bodies. According to the high-load full-capacity self-aligning roller bearing, the size of each rolling body is increased, the number of the rolling bodies is increased, and the bearing capacity of the high-load full-capacity self-aligning roller bearing is improved; the high-load full-capacity self-aligning roller bearing has the advantages of being low in speed, high in load, capable of being widely applied to low-speed and heavy-duty working conditions of rolling mills, crushers and vibrating screens, and long in the service life.

Description

A kind of high loading completely fills selfaligning roller bearing

Technical field

The utility model belongs to a kind of selfaligning roller bearing, relates generally to a kind of heart rolling element of completely debuging, and has the bearing structure of high bearing capacity.

Background technique

Conventional structure selfaligning roller bearing, has two row spherical rollers at present, and rolling element is guided by brass entity retainer or stamping steel plate structure retainer, mainly bears radial load, also can bear the thrust load of either direction simultaneously.Radial capacity can be born, but pure thrust load can not be born.Such bearing outer ring ball track is spheric, therefore its aligning performance is good, and can compensating coaxial degree error.Be usually used in papermaking equipment, speed reducer, railway vehicle axletree, rolling mill gearbox shaft bearing, rolling mill roller, disintegrator, vibrating sieve, printing machinery, woodworking machinery, all kinds of industry with under speed reducer etc. heavy-duty low-speed operating mode, application area is extremely wide.Yet at some low speed, high carry, in the mechanical environment of HI high impact, conventional selfaligning roller bearing still can not meet this operating mode, in bearing demand, can adopt and reduce retainer deck-siding, the mode that increases rolling element increases bearing load carrying capacity, this method allows bearing in use, often because retainer deck-siding is little, insufficient strength and cause retainer to damage and cannot use.The utility model is that a kind of high loading completely fills selfaligning roller bearing.It utilizes bearing interior space to greatest extent, increases rolling element volume, increases rolling element quantity, and rolling element is covered with bearing interior space, and this has just increased the bearing capacity of bearing greatly, so this bearing has the feature of low-speed heave-load.All can extensive use under milling train, disintegrator, vibrating sieve low-speed heave-load operating mode.

Model utility content

The purpose of this utility model is: in low-speed heave-load situation, how improving large-scale and dynamic load oversize self-aligning roller bearing, is the problem that we will solve; The most important condition of dealing with problems is to increase roller number; Roller number increases, and the dynamic load of bearing will increase.The utility model is exactly by increasing rolling element volume, increase rolling element quantity, rolling element completely being filled and be distributed in bearing interior space, thereby increases the bearing capacity of bearing.

The purpose of this utility model can adopt following technological scheme to realize: described bearing parts is divided into: outer ring, inner ring, rolling element.Outer ring raceway is spheric raceway, and aligning performance is good, can play the effect of compensating coaxial degree error.Inner ring is identical with general category selfaligning roller bearing MB structure inner ring.There are two spherical raceways, match with rolling element rolling surface radius.Inner ring is identical with outer ring raceway radius of curvature, general rolling element rolling surface curvature, with the ratio of inner ring or outer ring raceway curvature be 0.99, i.e. contact rate.Rolling element relies on identical raceway radius of curvature, guides rolling element rotation, prevents the rolling element deflection that moves axially or misplace.Article two, between raceway, there is centre rib, there is the effect of isolation and guiding rolling element.All there is little rib inner ring both sides, have slight clearance with rolling element end face, and rolling element has small axial movement value between large-flange and little rib, guarantee rolling element parallel rolling, little rib bearing load not under bearing working state.Spherial rolling body is completely loaded on bearing interior space, has slight clearance between rolling element.Rolling element and inner ring centre rib surface of contact can be made the circular arc ball basal plane that radius is larger, can play the effect that reduces surface of contact, are of value to oil film and form.

The beneficial effects of the utility model are:

It utilizes bearing interior space to greatest extent, increases rolling element volume, increases rolling element quantity, and rolling element is covered with bearing interior space, and this has just increased the bearing capacity of bearing greatly, so this bearing has the feature of low-speed heave-load.All can extensive use under milling train, disintegrator, vibrating sieve low-speed heave-load operating mode.In addition, most brass manufacture, the waste rare metal resources of using of this large-scale retainer; If adopt and completely fill roller bearing, as calculated: the dynamic load of bearing can improve between 12%-16%.Can improve more than 60% working life.Saved the rare metal of copper cage.

Accompanying drawing explanation

Accompanying drawing 1 is the utility model plan view cross-sectional view.

Accompanying drawing 2 is the utility model schematic side view.

In figure: 1 is outer ring, 2 is inner ring, and 3 is rolling element, and 4 is spheric arc raceway, and 5 is circular arc rolling surface, and 6 is spheric arc raceway, and 7 is centre rib, and 8 is rolling element ball basal plane, and 9 is little rib.

Embodiment

By reference to the accompanying drawings, specific embodiment of the utility model is described.

As shown in Figure 1: a kind of high loading completely fills selfaligning roller bearing and mainly outer ring 1, inner ring 2,3 three kinds of component of rolling element, consists of.Outer ring 1 has spheric arc raceway 4, matches with the circular arc rolling surface 5 of rolling element 3, and contact rate is 0.99.In bearing rotary process, can play certain aligning effect, can compensating coaxial degree error.Inner ring 2 has two spheric arc raceways 6, matches with rolling element 3 circular arc rolling surfaces 5, and contact rate is 0.99.Inner ring 2 has centre rib 7 and matches with rolling element ball basal plane 8, and fitting surface is some contact.And inner ring 2 both sides respectively have little rib 9 and have certain interval with rolling element end face.As shown in Figure 2: rolling element 3 is completely loaded on bearing interior space, between rolling element, there is a small amount of gap.

Claims (1)

1. a high loading completely fills selfaligning roller bearing, mainly by outer ring (1), inner ring (2), (3) three kinds of component of rolling element, formed, it is characterized in that: outer ring (1) has spheric arc raceway (4), match with the circular arc rolling surface (5) of rolling element (3), contact rate is 0.99; Inner ring (2) has two spheric arc raceways (6), matches with rolling element (3) circular arc rolling surface (5), and contact rate is 0.99; Inner ring (2) has centre rib (7) and matches with rolling element ball basal plane (8), and fitting surface is some contact; Inner ring (2) both sides respectively have little rib (9) and have small axial clearance with rolling element end face, and rolling element (3) is completely loaded on bearing interior space, has a small amount of gap between rolling element.

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