CN203856891U

CN203856891U - Rolling bearing

Info

Publication number: CN203856891U
Application number: CN201290000486.3U
Authority: CN
Inventors: 马库斯·施蒂茨莱因; 约阿希姆·尼特克
Original assignee: Schaeffler Technologies AG and Co KG
Current assignee: Schaeffler Technologies AG and Co KG
Priority date: 2011-05-04
Filing date: 2012-03-05
Publication date: 2014-10-01
Anticipated expiration: 2022-03-05
Also published as: WO2012150055A1; DE102011075247A1

Abstract

The utility model relates to a rolling bearing with two sets of rolling bodies. The rolling bearing is characterized in that one set of rolling bodies is provided with spherical rolling surfaces (1) and has a slightly larger diameter than the other one in order to realize the non-slide rolling contact under a low-load state. According to the rolling bearing provided by the utility model, the rolling bodies with the ball-type rolling surfaces (1) are configured such that they are flattened in the non-load bearing region so as to differ at least in sections from the spherical shape for the geometrical adaptation to a predefined installation space.

Description

Rolling bearing

Technical field

The utility model relates to a kind of rolling bearing with two groups of rolling elements, wherein, for fricton-tight rolling contact under the load condition of low load, one group of rolling element is constructed with the rolling surface ground of ball formula and with having slightly larger diameter with respect to another group rolling element.

Background technique

Such rolling bearing is open by DE10338207B4.In the document, described the fricton-tight selfaligning roller bearing of a kind of double-row type, wherein each operation row of rolling element are made up of spheroid and roller.In order to ensure selfaligning roller bearing fricton-tightly operation under low load condition, the minimum exterior diameter of spheroid is implemented to such an extent that be greater than the largest outer diameter of roller.In the design proposal of this situation, adverse effect is, the spheroid of crossing size design needs large structure space.Especially can not under bearing capacity same case, realize thus at narrow bearing structure row.

Model utility content

Therefore the shortcoming of the known prior art based on described, the utility model based on task be, construct matchingly a kind of rolling bearing of aforesaid way with predetermined structure space.

According to the utility model, this task is solving as follows aspect the rolling bearing as described in the preamble of claim 1,, with the rolling element of the rolling surface of ball formula in non-supporting zone at least a point range selector ground deviation scabble and construct in spherical form.By this way, this rolling bearing is implemented matchingly with predetermined structure space in the situation that of identical enabling capabilities on geometrical construction, especially with the axial width reducing implement.

Preferably, be configured to the spherical roller with the parallel side of scabbling with the rolling element of the rolling surface of ball formula.Can realize thus the narrow especially structure row of nonslipping rolling bearing.

In particularly preferred design proposal of the present utility model, rolling bearing is configured to the fricton-tight selfaligning roller bearing with one group of barrel-type roller and one group of spherical roller.

Preferably, selfaligning roller bearing has axially barrel-type roller and the spherical rollers of two operation row side by side, wherein barrel-type roller and spherical roller arranged in succession alternately each other in each operation row.Realize thus and avoided being uniformly distributed of the optimized relation of slip and enabling capabilities and the quality in rolling bearing and load.

Manufacture and assembling in order to simplify, barrel-type roller and the spherical roller of two operation row can be arranged in common roller holder.

Preferably, barrel-type roller is configured with respectively the diameter that is greater than its length.This so-called " mistake secondary " (ü berquadratischen) barrel-type roller has high rigidity and can realize the narrow and high especially structural type of selfaligning roller bearing simultaneously.

In another particularly preferred structural scheme of the present utility model, barrel-type roller and spherical roller are arranged as follows, the barrel-type roller that makes operation row axially the spherical roller of the opposed or operation row of spherical roller upper and another operation row axially upper to move the barrel-type roller being listed as opposed with another.Thus, nonslipping selfaligning roller bearing can be realized with narrow structure row, and this selfaligning roller bearing can be manufactured and assemble simply.May also be considered that, corresponding opposed barrel-type roller and spherical roller slightly stagger each other and arrange.

Barrel-type roller can guide by the guiding device being arranged between described operation row in simple mode.The independent guided rings that such guiding device for example can be configured to together rotate or be integrally embodied as so-called " intermediate plate " (Mittelbord) with bearing inner race.

Brief description of the drawings

Other features of the present utility model obtain from following explanation and by illustrating simplifiedly therein embodiment's of the present utility model accompanying drawing.In the accompanying drawings:

Fig. 1 shows the three-dimensional Local map according to rolling bearing of the present utility model;

Fig. 2 shows the schematic partial view of rolling bearing.

Embodiment

Figure 1 illustrates the part according to nonslipping rolling bearing of the present utility model, this rolling bearing is configured to double-row type selfaligning roller bearing.Between bearing inner race 6 and unshowned bearing outer ring, rolling element is axially guiding abreast in two operation row.The each formation barrel-type roller 3 and spherical roller of two operation row, they are alternately one after the other arranged in peripheral direction each other.Spherical roller has the rolling surface 1 of ball formula, this rolling surface with spherical form deviation stop in the parallel side 2 of scabbling.In the state of being loaded, spherical roller forms point-like rolling contact in spherical rolling surface 1, and barrel-type roller 3 has wire rolling contact.With respect to barrel-type roller 3, spherical roller with slightly larger diameter implement.In the low load stage, so guarantee the nonslipping operation of spherical roller group.Barrel-type roller 3 works in the high load stage.Owing to bearing higher load, spherical roller resiliently deformable is until have its less diameter of barrel-type roller 3 use of high stiffness and together support.Barrel-type roller 3 and the spherical roller of two operation row are arranged in roller holder 4 and at this to tilt relative to each other respectively.

Fig. 2 schematically shows in two barrel-type roller 3 that guide side by side in moving row and the layout of spherical roller in axial partial cutaway figure.Raceway 7 for rolling element is constructed on bearing outer ring spherically.Barrel-type roller 3 and spherical roller are adapted to the ball-track 7 of bearing outer ring itself.Bearing inner race 6, roller holder 4 and rolling element can be from a small amount of angles of neutral position pivotable, so that the deflection of compensation alignment error, especially axle.With respect to traditional rolling element, " spheroid " removes all non-supporting zones on spherical roller.Traditional spherical form represents by a dotted line.Like this, form the spheroid with parallel side 2 that scabble both sides.In this way, spherical roller is narrower than spheroid significantly.Thus, corresponding structure space can be saved or spherical roller mates with predetermined structure space on its axial width.

Barrel-type roller 3 guides by the guiding device 5 on bearing inner race 6.Guiding device 5 is medially arranged between operation row and is exemplarily embodied as independently guided rings at this.Barrel-type roller 3, especially its length and guided rings form the border of selfaligning roller bearing structure space, and it retains, to hold spherical roller.At this, spherical roller must be aimed in dynamics mode according to the curvature of the ball-track 7 on bearing outer ring, and does not occur the overlapping of guided rings and barrel-type roller 3.In an illustrated embodiment, use so-called " crossing secondary " barrel-type roller 3, its diameter is greater than its length.Relative little thus by the barrel-type roller 3 selfaligning roller bearing structure space predetermined with guided rings.Spherical roller is by scabbling and corresponding narrow enforcement on side 2, thereby these spherical rollers mate with predetermined selfaligning roller bearing structure space on geometrical construction.Can use in this way its diameter to be greater than the spherical roller of the length of barrel-type roller 3.Can realize thus, in narrow and high especially structure row, implement the fricton-tight selfaligning roller bearing of row.

Reference character table

1 rolling surface

2 sides

3 barrel-type roller

4 roller holders

5 guiding devices

6 bearing inner races

7 raceways

Claims

1. one kind has the rolling bearing of two groups of rolling elements, wherein, for the contact of fricton-tightly rolling under the load condition of low load, one group of rolling element has the rolling surface (1) of ball formula and has slightly larger diameter with respect to another group rolling element, it is characterized in that, the rolling element of the described rolling surface with ball formula (1) in non-supporting zone at least range selector with spherical form deviation scabble and construct, in order to geometrically to mate predetermined structure space.

2. rolling bearing according to claim 1, is characterized in that, the rolling element of the described rolling surface with ball formula (1) is embodied as the spherical roller with parallel side (2).

3. rolling bearing according to claim 1 and 2, it is characterized in that, described rolling bearing is configured to the selfaligning roller bearing with one group of barrel-type roller (3) and one group of spherical roller, wherein in two operation row, respectively barrel-type roller (3) and spherical roller is alternately one after the other arranged in roller holder (4) each other.

4. rolling bearing according to claim 3, is characterized in that, described barrel-type roller (3) has respectively the diameter that is greater than described barrel-type roller length.

5. rolling bearing according to claim 4, is characterized in that, wherein, the spherical roller of the axial upper and other operation row of the barrel-type roller (3) of operation row is opposed, and vice versa.

6. rolling bearing according to claim 5, is characterized in that, in order to guide described barrel-type roller (3), between described operation row, is furnished with guiding device (5).