CN2365450Y - Compound single-way rolling bearing - Google Patents

Abstract

The utility model relates to a compound single-way rolling bearing comprising an inner ring, an outer ring, a holder, rolling bodies, etc. The utility model is characterized in that cylindrical surfaces corresponding to the inner and the outer rings are respectively provided with two group of rolling tracks; the middle part is a centripetal arc track, and both sides are cylindrical surface tracks; the inner ring is provided with a step-shaped notch; the rolling bodies comprising rolling balls and cylindrical rollers arranged at intervals are successively arranged on the holder. The bearing has the advantages of reasonable structural design, low manufacture cost, flexible rotation, high precision and good one-way locking effect and long service life in use.

Description

Compound single roll bearing

The utility model relates to a kind of bearing, exactly is compound single roll bearing.

The unilateral bearing of prior art (free wheel device) all is to change by single rolling element variation and the gap between the Internal and external cycle to realize, when rotated, upwards there is beating of 0.2-0.5 millimeter in the footpath, belong to and radially can not locate class, and the most of reducing rolling element that adopts of its braking state, be that the rolling element sectional shape is non-circular, increased the difficulty of processing technology, after the heat treatment, decarburizing layer can't grind off with grinding processing method, and it is not enough hardness to occur in therefore using, and the locking surface of contact is little, easily skid the problem that the life-span is short.

The purpose of this utility model is: provide that a kind of manufacturing process is simple, low cost of manufacture, long service life, resistance is little when just changeing, the compound single roll bearing that braking moment is big during counter-rotating, locking effect is good.

Above-mentioned purpose is achieved through the following technical solutions.Compound single roll bearing is made up of inner ring, outer ring, rolling element and retainer, it is characterized in that:

A. the external cylindrical surface of inner ring is provided with cross section and is The raceway of type, promptly the middle part is circular arc road entad, both sides are the road, cylndrical surface; Be provided with a stepped shape breach along the raceway direction, be the reducing raceway;

B. the corresponding cross section that is provided with inner ring raceway is on the inner cylindrical surface of outer ring The raceway of type;

C. rolling element comprises spin and cylindrical roller, and it is spaced successively with the form of a spin, a cylindrical roller on retainer, is positioned in spin on the raceway on the entad circular arc road of middle raceway, and cylindrical roller is positioned on the cylinder road of both sides.

The utility model reasonable in design, simple has been simplified processing technology, has reduced cost of production.In the use, this bearing rotates flexible precision height, and circular runout only is the 0.01-0.03 millimeter, and locking effect is good, evenly, and long service life.

Fig. 1 is the utility model structural representation;

Fig. 2 is the sectional view of Fig. 1;

Fig. 3 is the inner ring structural representation;

Fig. 4 is the B-B sectional view of Fig. 3;

Fig. 5 is the outer ring structure sectional view.

By Fig. 1, Fig. 2 as seen, this compound single roll bearing is made up of inner ring 4, outer ring 5, retainer 6, spin 3, cylindrical roller 1, spring 7 and dust cover 2.Raceway on inner ring 4 external cylindrical surfaces is divided into two groups, and one group is the entad arc raceway 8 at middle part, and another group is to be positioned at the entad cylndrical surface raceway 9 of arc raceway both sides; Be provided with two groups of raceways with inner ring 4 corresponding outer rings 5 inner cylindrical surfaces; And inner ring 4 upper edge raceway directions are provided with a stepped shape breach 10, are the reducing raceway.Rolling element is spaced successively with the form of a spin 3, cylindrical roller 1, another spin 3 on retainer 6.Spin 3 is positioned on the entad arc raceway of middle raceway, and cylindrical roller 1 is positioned on the cylinder raceway of both sides.

In the use, when Internal and external cycle relative to when certain orientation rotates, cylindrical roller 1 becomes tight by pine, Internal and external cycle locking; When other direction rotates, unidirectional inoperative, roll in inside and outside raceway by spin 3, play centripetence.

Claims (1)

1. compound single roll bearing is made up of inner ring, outer ring, rolling element and retainer, it is characterized in that:

A. inner ring and external cylindrical surface are provided with cross section and are The raceway of type, promptly the middle part is circular arc road entad, both sides and road, cylndrical surface; Be provided with a stepped shape breach along the raceway direction, be the reducing raceway;

B. the corresponding cross section that is provided with inner ring raceway is on the inner cylindrical surface of outer ring

The raceway of type;

C. rolling element comprises spin and cylindrical roller, and it is spaced successively with the form of a spin, a cylindrical roller on retainer, is positioned in spin on the raceway on the entad circular arc road of middle raceway, and cylindrical roller is positioned on the cylinder road of both sides.

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