CN206754147U - One kind radiating bearing - Google Patents

Abstract

The utility model discloses one kind radiating bearing, a kind of bearing that radiates includes ball between outer ring, inner ring, setting outer ring and inner ring of bearing and the retainer for along the circumferential direction separating ball, it is characterized in that：The first seal groove is circumferentially provided with the inwall of the outer ring, closure is embedded between the inner ring and outer ring；The closure includes heat conduction frame and rubber standoff, and the heat conduction frame includes being embedded the heat-conducting plate in side of the rubber standoff towards ball and multiple heat dissipation heads for running through rubber standoff and in another axial end of rubber standoff exposing；Inwall of the heat-conducting plate with the first seal groove vertically is abutted, and by the heat conduction and heat radiation structure added on closure, the heat dispersion of bearing is strengthened while ensureing and sealing.

Description

One kind radiating bearing

Technical field

A kind of rotatable support field is the utility model is related to, more particularly to a kind of radiating bearing.

Background technology

Part with rotating function, it all can't do without the drive and support of bearing.The precision of its bearing and the height of efficiency The precision and efficiency of rotary part are directly influenced, so the precision and efficiency of bearing just directly affect or even represented rotating part The precision and efficiency of part, today of energy-conserving and environment-protective is particularly shouted in the whole world, precision and the efficiency for improving rotary part are into common Know, then higher requirement is also just proposed to bearing.For common deep groove ball bearing, machining accuracy will lean on equipment and behaviour Ensure as technical ability, but to improve efficiency --- bearing rotating speed and service life are improved to improve processing efficiency, reduce bearing Moment of friction so as to reduce the power consumption of bearing, can be by improving the structure of traditional bearing product to realize.Under study for action It was found that although we by this class bearing rolling bearing, actually due to bearing working face in the rolling bearing course of work（That is steel The size of the contact surface of ball and raceway groove）Geometry and crudy difference, steel ball be not PURE ROLLING in channels, wink Between can produce relative slip, this is relative to slide both easy frictional heats, also increases turning moment and increase power consumption.

In the prior art, bearing generally will be realized using standard deep groove ball bearing, the structure of existing standard deep groove ball bearing Run at high speed and following defect be present：

1st, steel ball size and pivot footpath limit the high speed performance of bearing.The radial centrifugal force FCr and steel ball of steel ball 3 powers of diameter are directly proportional, directly proportional to the pivot footpath Dwp of steel ball.The diameter D of bearing steel ball is bigger, the quality of steel ball Bigger, steel ball radial centrifugal force FCr and gyroscopic couple when high speed rotates is also bigger；Meanwhile the pivot footpath of steel ball Bigger, the linear velocity of steel ball is bigger, and steel ball radial centrifugal force and gyro power when high speed rotates is also bigger.The radial direction of steel ball Centrifugal force and gyroscopic couple conference produce very big contact stress to bearing, aggravate bearing temperature rise and abrasion, reduce making for bearing Use the life-span.

2nd, Bearing inner structure limits the high speed performance of bearing.The target design function of standard deep groove ball bearing is specified Load, thus interior raceway groove is designed as small radius of curvature, it is 0.515 times of steel ball size, outer raceway groove radius of curvature is designed as Larger radius of curvature, for 0.525 times of steel ball size.The bearing requirements to run at high speed enclose working face surely will stablize composition bearing assembly Steel ball and another lasso, moving-coil working face should lubricate and radiate well.General bearing outer ring is to determine circle, and inner ring is moving-coil, Under high speed conditions, interior raceway groove radius of curvature as moving-coil is small to cause heat to increase severely.Since for outer raceway groove, septal fossula One times or so more than the frequency that road works than outer raceway groove, namely interior raceway groove and steel ball contact wear one times or so more than outer raceway groove, Interior raceway groove radius of curvature is too small, and the circular arc line of raceway groove envelope steel ball is just more, so the bearing groove in the state of inner ring rotates at a high speed The heat of road and steel ball contact surface can significantly rise, and steel ball and raceway groove face are easy to wear, so as to reduce the use longevity of bearing Life.

In addition, it is big as the outer raceway groove radius of curvature enclosed surely, the axial float of bearing can be made greatly and sliding friction is big.Reason It is that, when outer raceway groove radius of curvature is big, the degree of making up between raceway groove and steel ball is small, namely the circular arc line of raceway groove envelope steel ball is few, one Aspect causes axial float increase of the steel ball in outer raceway groove, and fast state lower bearing is unstable, on the other hand causes steel ball to exist Sliding friction probability increase on raceway groove face.

3rd, the epipharynx of sealing ring and inner ring seal groove are interference fitted, and the spin friction torque of bearing is big, is rubbed under high speed conditions It is serious to wipe heat.

As can be seen here, to improve the high speed performance of deep groove ball bearing, on the one hand to take technical measures reduce steel ball from Mental and physical efforts and gyroscopic couple, on the other hand it is the thermal diffusivity and lubricating function for improving bearing working face, improves under bearing fast state Stability and reduce sliding friction probability.

Utility model content

The purpose of this utility model is to provide a kind of radiating bearing, has more preferable heat dispersion compared to existing bearing.

Above-mentioned technical purpose of the present utility model technical scheme is that：

One kind radiating bearing, including the outer ring of bearing, inner ring, ball between outer ring and inner ring is set and by ball along circle The retainer that circumferential direction separates, is circumferentially provided with the first seal groove on the inwall of the outer ring, and the ball is along bearing axial direction Both sides are provided with closure；The closure is embedded between inner ring and outer ring；The closure includes heat conduction frame and rubber Support, the heat conduction frame include be embedded side of the rubber standoff towards ball heat-conducting plate and it is multiple through rubber standoff and The heat dissipation head that another axial end of rubber standoff exposes；Inwall of the heat-conducting plate with the first seal groove vertically abuts.

Using such scheme, in bearing installation and when use, outer ring remains stationary as, and inner ring produces relative turn It is dynamic；Outer ring abuts with ball, and inner ring abuts with ball, and ball contacts with retainer；And three is typically that metal material is led Hot property is preferable, in addition, heat-conducting plate abuts with outer ring；Pass through heat while frictional heat is produced between ball and inner ring or outer ring Conduction is to heat-conducting plate, and heat-conducting plate is connected with heat dissipation head, is outwardly radiated finally by heat dissipation head, so as to ensure the same of sealing When strengthen the heat dispersion of bearing；In addition, heat conduction frame can play a part of support to rubber standoff so that rubber standoff exists High-temperature heating still can have good support sealing effectiveness after softening.

More preferably：The heat dissipation head is T-shaped along the section for crossing heat dissipation head axis, and the axial surface of heat dissipation head with Rubber standoff abuts.

Using such scheme, increasing heat radiation area, and heat dissipation head is prevented to be separated with rubber standoff.

More preferably：The second seal groove, the inner circle ipt card of the closure are provided with the outer wall of the inner ring It is connected in the second seal groove.

Using such scheme, avoid closure and contacted with inner ring, while formd between closure and inner ring roundabout Long gap path, had both avoided the dust in the external world or the grease containing dust enters, and reduced the volatilization of internal lubrication fat again, so as to The cycle of fat maintenance is filled out in the effective service life for extending bearing and extension.

More preferably：The inwall of the closure is recessed compensating tank.

Using such scheme, lubricating grease or the extraneous dust entered, grease that compensating tank can overflow to inside face When store, and formed simultaneously lubricating grease block stop effect.

More preferably：The center of the inner ring is recessed interior raceway groove, and the center of the outer ring is recessed to be formed Outer raceway groove, both ends of the ball along bearing radial direction are respectively engaged with interior raceway groove and outer raceway groove.

Using such scheme, for placing ball, and certralizing ability is played.

More preferably：The interior raceway groove radius of curvature is 0.529 times of steel ball size, and outer raceway groove radius of curvature is steel 0.521 times of bulb diameter.

Using such scheme, interior raceway groove radius of curvature increases than the interior raceway groove radius of curvature of standard deep groove ball bearing 2.8%, bearing outer raceway groove radius of curvature reduces 0.8% than the outer raceway groove radius of curvature of standard deep groove ball bearing, reduces steel ball Axial float and sliding friction probability in outer raceway groove, reduce the arc length of interior raceway groove envelope steel ball, improve interior raceway groove with The radiating condition in steel ball working face, improve the heat dispersion of bearing working face.

More preferably：The both sides of the interior raceway groove and outer raceway groove, which are respectively provided with, deposits fat groove, described to deposit fat groove and interior raceway groove Or outer raceway groove is connected.

Using such scheme, can prestore partial lubrication fat in interior raceway groove and outer raceway groove, lubricated surface lubricating grease by Supplement can be instantly obtained after heat loss.

More preferably：The inner surface of described closure is the smooth surface of fine grinding.

Using such scheme, because of the heat of friction generation when can reduce bearing working, temperature rise when bearing runs at high speed is reduced Value.

In summary, the utility model has the advantages that：

By the heat conduction and heat radiation structure added on closure, the heat dispersion of bearing is strengthened while ensureing and sealing； The structural strength of closure is also provide enhanced simultaneously, is kept from heat and is softened and loosen.

Brief description of the drawings

Fig. 1 is the structural representation of the bearing of embodiment 1.

In figure, 1, outer ring；2nd, inner ring；3rd, ball；4th, retainer；5th, closure；6th, fat groove is deposited；11st, outer raceway groove；12nd, One seal groove；21st, interior raceway groove；22nd, the second seal groove；51st, rubber standoff；511st, compensating tank；52nd, heat conduction frame；521st, heat-conducting plate； 522nd, heat dissipation head.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

This specific embodiment is only that it is not to limitation of the present utility model, ability to explanation of the present utility model Field technique personnel can make the modification of no creative contribution to the present embodiment as needed after this specification is read, but As long as all protected in the scope of protection of the utility model by Patent Law.

Embodiment 1：One kind radiating bearing, as shown in figure 1, outer ring 1, inner ring 2, ball 3, the and of retainer 4 including bearing Closure 5.

The center of inner ring 2 is recessed interior raceway groove 21, and the center of outer ring 1 is recessed to form outer raceway groove 11, and ball 3 is along axle The both ends for holding radial direction are respectively engaged with interior raceway groove 21 and outer raceway groove 11；The clamping of retainer 4 is in the both sides of ball 3, and by ball 3 Along the circumferential direction even partition.The radius of curvature of interior raceway groove 21 is 0.525 times of steel ball size, and the radius of curvature of outer raceway groove 11 is steel ball 0.522 times of diameter；The radius of curvature of interior raceway groove 21 increases 2.8% than the radius of curvature of interior raceway groove 21 of standard deep groove ball bearing, axle The radius of curvature of outer raceway groove 11 that the radius of curvature of outer raceway groove 11 is held than standard deep groove ball bearing reduces 0.8%, reduces steel ball outside Axial float and sliding friction probability in raceway groove 11, reduce the arc length of the envelope steel ball of interior raceway groove 21, improve interior raceway groove 21 With the radiating condition in steel ball working face, the heat dispersion of bearing working face is improved.

The both sides of interior raceway groove 21 and outer raceway groove 11, which are respectively provided with, deposits fat groove 6, deposits fat groove 6 and is connected with interior raceway groove 21 or outer raceway groove 11 It is logical；The partial lubrication fat that can be prestored on fat groove 6 is deposited, benefit can be instantly obtained after by heat loss in the lubricating grease of friction surface Fill.Both sides of the ball (3) along bearing axial direction are provided with closure (5)；The closure (5) be embedded in inner ring (2) and Between outer ring (1)；

The first seal groove 12 is circumferentially provided with the inwall of outer ring 1, the second seal groove 22 is provided with the outer wall of inner ring 2, Closure 5 is embedded between inner ring 2 and outer ring 1, and closure 5 is symmetricly set on both sides of the ball 3 along bearing axial direction simultaneously.It is close The outer ring of capping 5 and inner ring are respectively engaged with the first seal groove 12 and the second seal groove 22, and closure 5 and second seals Gap is left between groove 22.Meanwhile the inner surface of closure 5 is recessed compensating tank 511, compensating tank 511 can overflow to inside The lubricating grease or the extraneous dust entered, grease gone out is stored temporarily, and is formed lubricating grease simultaneously and blocked the effect stopped.It is close The inner surface of capping 5 is the smooth surface of fine grinding, reduces temperature rise value when bearing runs at high speed.

Closure 5 includes heat conduction frame 52 and rubber standoff 51, and heat conduction frame 52 includes being embedded in rubber standoff 51 towards ball 3 The heat-conducting plate 521 of side and multiple through rubber standoff 51 and the heat dissipation head that exposes in 51 another axial end of rubber standoff 522；Inwall of the heat-conducting plate 521 with the first seal groove 12 vertically abuts.Section of the heat dissipation head 522 along the axis of heat dissipation head 522 excessively It is T-shaped, and the axial surface of heat dissipation head 522 abuts with rubber standoff 51.

In bearing installation and when use, outer ring 1 remains stationary as, and inner ring 2 produces relative rotation；Outer ring 1 and rolling Pearl 3 abuts, and inner ring 2 abuts with ball 3, and ball 3 contacts with retainer 4；And three is typically metal material heat conductivility Preferably, in addition, heat-conducting plate 521 abuts with outer ring 1；Pass through while frictional heat is produced between ball 3 and inner ring 2 or outer ring 1 Heat transfer is to heat-conducting plate 521, and heat-conducting plate 521 is connected with heat dissipation head 522, is outwardly radiated finally by heat dissipation head 522, so as to The heat dispersion of bearing is strengthened while ensureing and sealing；In addition, heat conduction frame 52 can play support to rubber standoff 51 Effect so that rubber standoff 51 still can have good support sealing effectiveness after high-temperature heating softens.

Claims (8)

1. one kind radiating bearing, including the ball between the outer ring (1) of bearing, inner ring (2), setting outer ring (1) and inner ring (2) (3) retainer (4) and by ball (3) along the circumferential direction separated, it is characterized in that：It is circumferentially disposed on the inwall of the outer ring (1) There is the first seal groove (12), both sides of the ball (3) along bearing axial direction are provided with closure (5)；The closure (5) is embedding It is located between inner ring (2) and outer ring (1)；The closure (5) includes heat conduction frame (52) and rubber standoff (51), the heat conduction frame (52) include being embedded and towards the heat-conducting plate (521) of the side of ball (3) and multiple run through rubber standoff in rubber standoff (51) (51) heat dissipation head (522) and in rubber standoff (51) another axial end exposed；The heat-conducting plate (521) and the first seal groove (12) inwall vertically abuts.

2. a kind of radiating bearing according to claim 1, it is characterized in that：Heat dissipation head is crossed on heat dissipation head (522) edge (522) section of axis is T-shaped, and the axial surface of heat dissipation head (522) abuts with rubber standoff (51).

3. a kind of radiating bearing according to claim 1, it is characterized in that：Second is provided with the outer wall of the inner ring (2) Seal groove (22), the inner circle gap of the closure (5) are connected in the second seal groove (22).

4. a kind of radiating bearing according to claim 3, it is characterized in that：The inwall of the closure (5) is recessed benefit Repay groove (511).

5. a kind of radiating bearing according to claim 1, it is characterized in that：The center of the inner ring (2) is recessed septal fossula Road (21), the center of the outer ring (1) are recessed outer raceway groove (11), and both ends of the ball (3) along bearing radial direction are blocked respectively It is connected in interior raceway groove (21) and outer raceway groove (11).

6. a kind of radiating bearing according to claim 5, it is characterized in that：Interior raceway groove (21) radius of curvature is that steel ball is straight 0.525 times of footpath, outer raceway groove (11) radius of curvature are 0.522 times of steel ball size.

7. a kind of radiating bearing according to claim 5, it is characterized in that：The interior raceway groove (21) and the two of outer raceway groove (11) Side, which is respectively provided with, deposits fat groove (6), and the fat groove (6) of depositing is connected with interior raceway groove (21) or outer raceway groove (11).

8. a kind of radiating bearing according to claim 1, it is characterized in that：The inner surface of described closure (5) is fine grinding Smooth surface.