CN206668751U - A kind of ball full floating bearing - Google Patents

Abstract

It the utility model is related to a kind of ball full floating bearing, including bearing body and turn, an at least ring through hole is axially disposed with the side wall of described bearing body, it is made up of per ring through hole several through holes around even circumferential arrangement, in per ring through hole the ball moved radially along bearing body is disposed with least three through holes being evenly arranged, the location arrangements corresponding with per ring through hole have annular groove on described bearing body, and the turn being in contact with ball is provided with the annular groove.The utility model can countershaft carry out partial dynamic control, comprehensive friction is smaller, and height turns running resistance and is obviously reduced, and meets that existing full floating bearing applies proposed requirements at the higher level, while expand application of the more areas to this durable economical bearing.

Description

A kind of ball full floating bearing

Technical field

Full floating bearing field is the utility model is related to, more particularly to a kind of ball full floating bearing.

Background technology

Full floating bearing is the bearing commonly used in auto industry, and full floating bearing is actually enclosed on the annulus in rotating shaft, annulus There is gap between axle and annulus and bearing block, be full of the two gaps, shape using the lubricating oil of 0.25-0.4Mpa pressure Into double-layer oil film, floating bearing is in oil film with armature spindle rotating Vortex.For full floating bearing counter ball bearing, structure letter It is single, durable material benefit, it is used primarily in high rotating speed and only transmits torque, is not subject to the occasion of any counter-force and moment of flexure.But its deficiency It is clear that its height first turns that running resistance is big, the speed-raising response of rotating shaft is influenceed；Secondly the dynamic of full floating bearing countershaft Control is unstable；The quality requirements of its last pressure to lubricating oil are higher.These deficiencies certainly will influence or prevent some of its should With.

In recent years, application development of the turbocharged engine on passenger car was like a raging fire, at present small sized turbocharger Almost all uses full floating bearing, and the deficiency above of full floating bearing has had influence on the application in this field, major booster Manufacturer has substituted existing full floating bearing using roller bearing in research, further to squeeze the dynamic property of engine, Turbo lag can also be reduced using ball bearing in addition, hence it is evident that improve the dynamic response of vehicle.Although ball bearing has Rub small, radially, axially power can be born, use environment requires low advantage, but complicated, and rotating speed is low, short life, is being pressurized Think to substitute existing full floating bearing rapidly in device market, it is clear that more difficult.

The content of the invention

Technical problem to be solved in the utility model is to provide a kind of ball full floating bearing, can countershaft progress part Dynamic control, comprehensive friction is smaller, and height turns running resistance and is obviously reduced, and it is higher to meet that existing full floating bearing application is proposed It is required that while expand application of the more areas to this durable economical bearing.

Technical scheme is used by the utility model solves its technical problem：A kind of ball full floating bearing is provided, wrapped Bearing body and turn are included, an at least ring through hole is axially disposed with the side wall of described bearing body, per ring through hole It is made up of several through holes around even circumferential arrangement, is disposed with every ring through hole at least three through holes being evenly arranged The ball moved radially along bearing body, the location arrangements corresponding with per ring through hole have annular groove on described bearing body, The turn being in contact with ball is installed in the annular groove.

Preferably, described turn includes spring semi-ring, described spring semi-ring has two, and its both ends is not respectively With end face be provided with grafting breach along radial direction circular arc, the grafting breach on two spring semi-rings it is corresponding be mutually inserted composition One complete turn.

As the supplementary notes to above-mentioned method for optimizing, the circular arc opening angle of described spring semi-ring is 140 °, described Spring semi-ring on grafting breach central angle be 40 °.

As the C-spring circle that another preferred, described turn is one end open.

Beneficial effect：A kind of ball full floating bearing is the utility model is related to, it is simple in construction, it is easy for installation, when ball is complete Floating bearing in static or low speed, ball turn radial direction binding force effect under with rotating shaft close contact, now bearing with Equivalent to ball bearing between rotating shaft；When ball full floating bearing rotating speed exceedes certain rotating speed, the centrifugal action of ball is in bullet Spring coil, turn is set radially to expand, ball separates with rotating shaft therewith, and now ball full floating bearing is equivalent to full floating axle Hold, partly realize the dynamic control of countershaft, hence it is evident that improve rotating shaft stability, frictional resistance is small, and efficiency of bearing improves, and subtracts Small height turns running resistance.

Brief description of the drawings

Fig. 1 is the three-dimensional structure diagram of existing full floating bearing of the present utility model；

Fig. 2 is the half-sectional structure chart of the main view using the first coil structures of the present utility model；

Fig. 3 is three-dimensional structure diagram of the present utility model；

Fig. 4 is the half-sectional structure chart of side view of the present utility model；

Fig. 5 is the three-dimensional structure diagram of spring semi-ring described in the utility model；

Fig. 6 is the main view half-sectional structure chart of the present utility model using second of coil structures；

Fig. 7 is the main structure figure of spring semi-ring described in the utility model.

Diagram：1st, ball；2nd, bearing body；3rd, turn；4th, annular groove；5th, through hole；11st, spring semi-ring；12nd, grafting lacks Mouthful.

Embodiment

With reference to specific embodiment, the utility model is expanded on further.It should be understood that these embodiments are merely to illustrate this Utility model rather than limitation the scope of the utility model.In addition, it is to be understood that reading the content of the utility model instruction Afterwards, those skilled in the art can make various changes or modifications to the utility model, and these equivalent form of values equally fall within this Shen Please appended claims limited range.

As illustrated in figs. 2-7, embodiment of the present utility model is related to a kind of ball full floating bearing, including bearing body 2 With turn 3, an at least ring through hole 5 is axially disposed with the side wall of described bearing body 2, per ring through hole 5 by some The individual through hole 5 around even circumferential arrangement is formed, and edge is disposed with least three through holes 5 being evenly arranged in every ring through hole 5 The ball 1 that bearing body 2 moves radially, the location arrangements corresponding with per ring through hole 5 have annular groove on described bearing body 2 4, the turn 3 being in contact with ball 1 is installed in the annular groove 4.

Ball groove structure designs one axially more than, can design multiple annular grooves 4 according to the requirement of application；Each ring Ball 1 in groove 4 is not necessarily intended to be assemblied in each hole, but the ball 1 in each structure of annular groove 4 must be equal in a circumferential direction Cloth, it otherwise will influence the dynamic balance of roller bearing full-floating bearing.

As a kind of embodiment of the present utility model, when ball full floating bearing is in static or low speed, booster turns The rotating speed lower-speed state of axle is in 80,000 turns/min, and the rotating speed of corresponding ball full floating bearing is ten thousand turns/min of 2-3, and bearing At these speeds, if full floating bearing, then the oil pressure of engine offer is relatively low, and oil film support force is small, countershaft Dynamic control capability is weak, if ball bearing, then the enabling capabilities of ball countershaft are strong, and countershaft dynamic control capability is strong, Under lower-speed state, centrifugal force caused by ball full floating bearing is less than radial direction binding force of the turn 3 to ball 1, so rolling Rotating shaft close contact of the pearl 1 in the presence of turn 3 with Bearing inner, now equivalent to ball bearing, branch between bearing and rotating shaft Support ability is strong；

When ball full floating bearing rotating speed exceedes certain rotating speed, this critical bearing rotating speed be generally ten thousand turns of 4-5/ Min, now ball full floating bearing to centrifugal force caused by ball 1 be more than turn 3 to the radial direction binding force of ball 1, ball Centrifugal action in turn 3, turn 3 is radially expanded, ball 1 separates with rotating shaft therewith, now ball full floating Bearing is equivalent to full floating bearing, and the oil pressure that engine provides rises, and the support force of oil film also improves, and partly realizes countershaft Dynamic control, hence it is evident that improve rotating shaft stability, frictional resistance is small, efficiency of bearing improve, reduce height and turn running resistance.

When vehicle launch accelerates, using ball bearing, the speed-raising of vehicle is more preferable compared with full floating bearing, car 10% is improved close to the moment of torsion of idling, acceleration shortens 10%.

Certainly, the centrifugal force under the quantity decision same rotational speed of ball 1, and the design and adjustment of the elastic force of turn 3 Also it is critically important, ball bearing and the critical speed of full floating bearing conversion are determined, the centrifugal force of a ball is in bearing rotating speed It is 16.88N-25.88N in ten thousand turns/min of 4-5, if 3 balls, then centrifugal force is 50.64N-77.64N；If 6 Individual ball, then centrifugal force is 101.28N-155.28N, and the elastic force of turn 3 can be set according to this numerical value.

Preferably, described turn 3 includes spring semi-ring 11, described spring semi-ring 11 has two, its both ends point Grafting breach 12 is not provided with different end faces along radial direction circular arc, the grafting breach 12 on two spring semi-rings 11 is corresponding One complete turn of composition is mutually inserted, the structure of this turn uses half-ring structure, the assembler of spring semi-ring Skill is by the enlarged open of spring semi-ring, is matched somebody with somebody into along the radially loading of bearing, and two springs are equipped with each bearing annular groove Semi-ring, left spring semi-ring is identical with right spring semi-ring, and can be assembled and be integrated by spring semi-ring port organization, and assembly technology can Greatly reduce influence of the assembling to spring semi-ring；After the spring semi-ring is assemblied in bearing, there are two in a circumferential direction symmetrically Opening, the dynamic balance of bearing can be significantly improved.

As the supplementary notes to above-mentioned method for optimizing, the circular arc opening angle of described spring semi-ring 11 is 140 °, institute The central angle for the grafting breach 12 on spring semi-ring 11 stated is 40 °, and the size of this circular arc opening can influence spring half-turn dress Timing, the influence to spring half-turn elasticity, while can also influence the Flexible use claimed range of spring half-turn.

As the C-spring circle that another preferred, described turn 3 is one end open, C-spring circle is more commonly used Accessory, it is cheap, it is easy to process.

Bearing described in the utility model can countershaft carry out partial dynamic control, comprehensive friction is smaller, and height transhipment turns resistance Power is obviously reduced, and meets that existing full floating bearing applies proposed requirements at the higher level, while expand more areas to this durable The application of the bearing of material benefit.

Claims (4)

1. a kind of ball full floating bearing, including bearing body (2) and turn (3), it is characterised in that described bearing body (2) an at least ring through hole (5) is axially disposed with side wall, is arranged per ring through hole (5) by several around even circumferential Through hole (5) composition, per at least three through holes (5) being evenly arranged in ring through hole (5) in be disposed with along bearing body (2) The ball (1) moved radially, the location arrangements corresponding with per ring through hole (5) have annular groove (4) on described bearing body (2), The turn (3) being in contact with ball (1) is installed in the annular groove (4).

2. ball full floating bearing according to claim 1, it is characterised in that：Described turn (3) includes spring half Ring (11), described spring semi-ring (11) have two, and its both ends is provided with grafting along radial direction circular arc in different end faces respectively and lacked Mouthful (12), grafting breach (12) on two spring semi-rings (11) it is corresponding be mutually inserted one complete turn of composition.

3. ball full floating bearing according to claim 2, it is characterised in that：The circular arc of described spring semi-ring (11) is opened Bicker degree is 140 °, and the central angle of the grafting breach (12) on described spring semi-ring (11) is 40 °.

4. ball full floating bearing according to claim 1, it is characterised in that：Described turn (3) is one end open C-spring circle.