CN2437897Y - Shaft coupling bearing - Google Patents

Abstract

The utility model discloses an axle is bearing even with axis of rotation, it has an outer lane, an axis of rotation has been worn in the outer lane, there are two bearings and outer lane of separating mutually along the axial between axis of rotation and outer lane, the axis of rotation rotates and is connected, at every bearing respectively intrinsic sealing washer in the outer lane of one end outwards, the sealing lip of sealing washer and the cooperation of axis of rotation surface inter-liquid seal, there is the grease piece that separates with the axis of rotation connected respectively in the axis of rotation between every bearing and adjacent sealing washer, it is gapped between the periphery of grease piece and outer lane internal surface, thereby the hourglass fat phenomenon in the prior art has been solved, reliability and working life satisfy operation requirement.

Description

Shaft connecting bearing

The utility model relates to a kind of rolling bearing in relative rotation, especially a kind of shaft connecting bearing that has rotatingshaft.

Shaft connecting bearing is a kind of special bearing in the bearing extended familys, since easy to install, in automobile cooling water pump, be applied at present.This shaft connecting bearing, structurally, it has the outer ring of a broadside, be installed with a rotatingshaft coaxial in the outer ring with the outer ring, between rotatingshaft outer surface and inner surface along axis shaft to the spaced-apart clutch shaft bearing and second bearing are arranged, described these two bearings have the retainer rolling bearing for no lasso, at these two bearings and cavity zone between the two thereof a certain amount of lubricating grease are arranged, and between near the internal surface at two ends, outer ring and rotatingshaft outer surface the seal ring liquid sealing are arranged respectively.This class shaft connecting bearing, when rotatingshaft rotates, the rolling element that drives in the rolling bearing rolls on inner surface raceway and the surperficial raceway of axle, roll frictional heat takes place, bearing is heated up, the also corresponding raising of the flowability of lubricating grease therebetween, thus make have between the rolling element of bearing and raceway good lubricated.Yet when the rotatingshaft high speed rotating, when perhaps the operating time is longer, the temperature rise of bearing, make the air in the inner chamber be heated pressure in the generation, in press the lubricating grease make diffusion or to attach on the seal ring sealing lip outwards to spill by connecting part with axle, and the bearing of high speed rotating can constantly get rid of the lubricating grease in the inner chamber to the sealing lip of seal ring and outwards spills.When using a period of time, leak the fat amount and reach one regularly, the lubricating condition of bearing is worsened, accelerate the wear damage of bearing race and rolling element, thereby reduced the working life of bearing, influenced the normal operation of coupled mechanical device, especially the harm to automobile is immeasurable.

At the problems referred to above,, the purpose of this utility model a kind ofly can effectively prevent the shaft connecting bearing that leak-stopping fat phenomenon prolongs its working life greatly thereby providing.

The utility model is to realize like this, the shaft connecting bearing that is provided, it has an outer ring, is installed with a rotatingshaft in the outer ring, between rotatingshaft and outer ring along axis shaft to having the spaced-apart clutch shaft bearing and second bearing and described outer ring, rotatingshaft to be rotationally connected; At described each bearing intrinsic seal ring in the outer ring of an end outwardly, the sealing lip of described each seal ring and rotatingshaft surface interstitial fluid are sealed and matched, on the rotatingshaft between described each bearing and the adjacent seals circle, have respectively one be connected with rotatingshaft every the fat sheet, it is described that each is gapped between the periphery of fat sheet and inner surface.

The described anchor ring that has indent every the fat sheet, the anchor ring of described indent can be the radian turning surface, also can be frustum cone sides.

After adopting the structure of above-mentioned shaft connecting bearing, since on the rotatingshaft between seal ring and the bearing, have with rotatingshaft rotate every the fat sheet, when have the indent anchor ring every fat sheet high speed rotating the time, it can stop that not only lubricating grease spreads to seal ring, and attach at the lubricating grease on the indent anchor ring because of under the powerful action of centrifugal force of fat sheet high speed rotating generation, be thrown toward along inner ring surface on the raceway of outer ring, thereby the rolling element of bearing is in a kind of good lubricating status always.When the shaft connecting bearing working stability, forming the airbond of rotation together every the inner ring surface place of fat sheet, this airbond can stop lubricating grease to every fat sheet and seal ring diffusion, thereby can effectively prevent the leakage fat phenomenon of lubricating grease to external leakage, and prolonged working life.Be stamping part every the fat sheet in addition, simple in structure, whole shaft connecting bearing cost performance is improved.

Below in conjunction with accompanying drawing mode of execution of the present utility model is described in further detail.

Fig. 1 be the utility model shaft connecting bearing structure partly cut open schematic representation.

Fig. 2 is every a kind of structure vertical profile enlarged view of fat sheet among Fig. 1.

Fig. 3 is every the another kind of structure vertical profile of fat sheet enlarged view.

As shown in Figure 1, shaft connecting bearing has its inside and outside coaxial outer ring 1 of periphery, be installed with a rotatingshaft 2 that extends to 1 two ends, outer ring respectively in the outer ring, the clutch shaft bearing 3 and second bearing 4 that spaced-apart certain distance is arranged between rotatingshaft 2 and outer ring 1 internal surface, thus realize that rotatingshaft is connected with the outer ring coaxial rotation.Described clutch shaft bearing 3 adopts no lasso that the centripetal ball bearing of retainer is arranged, and the nylon cages 5 that it comprises several steel balls and these steel ball circumference uniform distributions are separated mutually constitutes, and clutch shaft bearing 3 also can adopt the rolling bearing of other type.Described second bearing 4 adopts no lasso that the roller bearing of retainer is arranged, and it is by several rollers and the nylon cages 6 of several roller circumference uniform distributions is constituted, and certain second bearing also can adopt the rolling bearing of other type.

Have circumferential groove on the internal surface of the outer ring 1 of an end outwardly at clutch shaft bearing 3 and second bearing 4, a seal ring 8 and 11 in each circumferential groove, have been embedded respectively, there is a sealing lip hole adaptive with rotatingshaft 2 diameters the center of seal ring, the sealing lip hole of described seal ring 8,11 cooperates for liquid sealing with rotatingshaft 2 surfaces.

Be connected with one respectively every fat sheet 9 and 10 between clutch shaft bearing 3 and the adjacent seal ring 8 and on the rotatingshaft 2 between second bearing 4 and the adjacent seal ring 11, it can be with rotatingshaft 2 rotations.As shown in Figure 2, have its edge, hole every fat sheet 9 or 10 and axially be bent to form attachment hole 12 with rotatingshaft 2 surperficial interference fit, one therewith attachment hole 12 coaxial its external diameters than the periphery 13 of the little 0.5mm～1mm of described outer ring 1 internal diameter, and anchor ring 14 with an indent.The indent anchor ring 14 that Fig. 2 shows every the fat sheet is turning surface of band radian, and the indent anchor ring 14 that Fig. 3 shows every the fat sheet is frustum cone sides, about 81 ° of the bus of frustum cone side and the angle of cut of axis.

During work, rotatingshaft 2 drives rolling element high speed scroll on the raceway on outer ring 1 and rotatingshaft 2 surfaces of the clutch shaft bearing 3 and second bearing 4, rolling, friction generates heat in generation, the interior lubricating grease 7 of bearing and the air of bearing cavity are heated, the flowability of heated lubricating grease improves, under the rolling element of high speed rotating drives, the lubricating grease of flow-like flies upward in the bearing cavity of sealing everywhere, under the interior pressure effect that heated air produces, lubricating grease just spreads to the seal ring 8 and 9 at place, 1 two ends, outer ring.But be in and during with rotatingshaft 2 high speed rotating, formed the barrier of lubricating grease every fat sheet 9 and 11 between seal ring and the adjacent bearing to the seal ring diffusion; Simultaneously, attach under the powerful centrifugal action that produced by high speed rotating, get rid of on the raceway of bearing roller or in the inner chamber, make rolling element be in a kind of good lubricated environmental work all the time along indent anchor ring 14.Owing to can stop lubricating grease to spread every the fat sheet, thereby the connecting part of the sealing lip of seal ring and rotatingshaft can not produce Lou fat phenomenon to seal ring.And the quality hot air more much smaller than lubricating grease, because of rotary centrifugal force is very little, in it pressure will by every fat sheet 9 or 10 and outer ring 1 internal surface between the gap and the connecting part of sealing lip and rotatingshaft discharged.

Shaft connecting bearing good reliability of the present utility model, long service life not only in the cooling waterpump of automobile, and has at other and to relatively rotate, and the machinery of transmitting moment of rotation all can be widely used.

Claims (4)

1. shaft connecting bearing, it has an outer ring (1), be installed with a rotatingshaft (2) in the outer ring, between rotatingshaft (2) and outer ring (1) along axis shaft to having spaced-apart clutch shaft bearing (3) and second bearing (4) and described outer ring (1), described rotatingshaft (2) to be rotationally connected; At described clutch shaft bearing (3) and second bearing (a 4) intrinsic seal ring (8 respectively in the outer ring of an end outwardly, 11), the sealing lip of described each seal ring cooperates for liquid sealing with the rotatingshaft surface, it is characterized in that between described clutch shaft bearing (3) and adjacent seal ring (8) and described second bearing (4) and adjacent seal ring (11) between rotatingshaft (2) on have respectively one be connected with rotatingshaft every fat sheet (8,11), gapped between described each periphery (13) and described outer ring (1) internal surface every the fat sheet.

2. shaft connecting bearing according to claim 1 is characterized in that having every fat sheet (8 or 11) anchor ring (14) of an indent.

3. shaft connecting bearing according to claim 2 is characterized in that described indent anchor ring (14) is the arc turning surface.

4. shaft connecting bearing according to claim 2, its feature is a frustum cone side at described indent anchor ring (14).