CN109296650A - A kind of thrust bearing and its application method of turbocharger - Google Patents
A kind of thrust bearing and its application method of turbocharger Download PDFInfo
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- CN109296650A CN109296650A CN201811384509.5A CN201811384509A CN109296650A CN 109296650 A CN109296650 A CN 109296650A CN 201811384509 A CN201811384509 A CN 201811384509A CN 109296650 A CN109296650 A CN 109296650A
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- thrust
- oil
- bearing
- sleeve
- thrust bearing
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact bearings
Abstract
The present invention discloses a kind of thrust bearing of turbocharger, thrust bearing includes a thrust sleeve, the two sides of thrust sleeve are respectively set first, second thrust bearing, first, second thrust bearing working face corresponding with thrust sleeve is equipped with oil film wedge face, the two sides working face of thrust sleeve is thrust face, thrust sleeve is equipped with radial and axial oil holes, it is interconnected between radial direction oil hole and axial oilhole, so that the lubricating oil into thrust sleeve passes through radial direction oil hole, oil back chamber is converged to after axial oilhole and the thrust face of thrust sleeve two sides, to solve the Leakage of pressure impeller side.Simultaneously under the influence of centrifugal force, so that the flow of lubrication by thrust face increases, the operating temperature of thrust face when high revolving speed can be effectively reduced as the revolving speed of turbocharger improves, axial carrying capacity is improved.
Description
Technical field
The invention mainly relates to the technical field of turbocharger, in particular to a kind of thrust bearing of turbocharger
Structure and application method more particularly to a kind of thrust bearing from oil inlet on the inside of thrust sleeve.
Background technique
Technology for Turbocharger Manufacturing can effectively improve the power density of engine, reduce complete vehicle weight, improve fuel oil warp
Ji property, plays an important role to the energy-saving and emission-reduction of automobile.As energy problem is increasingly urgent tight with adding for emission regulation, turbine increases
Depressor technology is gradually popularized on a large scale.Vehicular engine dynamic property, economy, exhaust gas discharge and in terms of
It is required that continuous improvement, higher challenge is proposed to technology for Turbocharger Manufacturing.
The exhaust gas of engine blows turbine, is rotated by main shaft band dynamic pressure impeller, so that compressed air is sent into engine
It is interior.Typical turbocharger bearing system arrangement is as shown in Figure 1, arrow is the path schematic diagram of lubricating oil flow in figure.Fig. 1
In only depict the bearing arrangement part of turbocharger.In order to facilitate statement, bearing arrangement is divided into thrust bearing division herein
Divide and transverse bearing part.Wherein turbine, main shaft, Thurst washer, thrust sleeve, pressure impeller and locking nut together constitute rotor
System.Thurst washer, thrust sleeve and thrust bearing constitute thrust bearing part, to bear the axial force of rotor-support-foundation system.It is main
Axis, transverse bearing and intermediate constitute transverse bearing part, to bear the radial force of rotor-support-foundation system.Turbocharger operation
When, turbine will drive entire rotor-support-foundation system high speed rotation, and two transverse bearings in Fig. 1 rotate under the drive of lubricating oil,
Remaining part stationary is motionless.Lubricating oil is divided into 3 tunnels after entering intermediate: the lubricating oil of the leftmost side is by the oilhole on thrust bearing
The thrust face for entering thrust bearing two sides afterwards, is lubricated and cools down to thrust bearing part；Intermediate and right side lubrication oil
Not Jing Guo the oilhole on intermediate enter the inside and outside oil film faces of two transverse bearings, to radial bearing portions be lubricated with it is cold
But.
Thrust bearing part is further described in detail in Fig. 2, on the left of the inner hole and Thurst washer of thrust bearing
Lesser external cylindrical surface forms an annular oil pocket.Oil film wedge face is provided at left and right sides of thrust bearing, respectively at thrust sleeve and
The corresponding plane of Thurst washer forms two thrust faces.The lubricating oil of the leftmost side enters annular oil by the oilhole on thrust bearing
Then chamber enters oil back chamber by two thrust faces in left and right.The revolving speed of turbocharger is very high, since rubbing action can be in thrust
Amount of heat is generated on face, lubricating oil plays the role of lubrication and cooling to thrust face.About the working principle of thrust bearing, in whirlpool
It takes turns in the pertinent literature of booster and has had a detailed description.Since a large amount of lubricating oil are flowed out by left side thrust face, to prevent from lubricating
Oil leaks into pressure impeller side, is provided with oil guide plate in Fig. 2 and lubricating oil is imported oil back chamber.But still there is parts of lubricating oil can be by leading
Gap between oiled-plate method and thrust sleeve enters between backboard and oil guide plate, and then passes through the clearance leakage at piston ring to pressure impeller
The risk of leakage of side, lubricating oil is very high.
Meanwhile the thrust bearing of the prior art, the flow of lubrication by thrust face are by input pressure and lubrication
The flow resistance of oil determines, unrelated with the revolving speed of turbocharger (or relationship is smaller).When supercharger speed is higher, thrust face
Operating temperature increase, cause lubricating oil viscosity to reduce, the axial force reduction that turbocharger is able to bear.
Further, the thrust bearing of the prior art needs to punch on thrust bearing, in some instances it may even be possible to need more complicated
Structure, manufacturing cost is higher.
Summary of the invention
The present invention in view of the above-mentioned problems, provide the thrust bearing and its application method of a kind of turbocharger,
By changing the structure of thrust sleeve, the first, second thrust bearing is respectively set in the two sides of thrust sleeve, while thrust sleeve is equipped with oil
Hole solves the Leakage of pressure impeller side.
The purpose of the present invention can be realized by following technical proposals: a kind of thrust bearing knot of turbocharger
Structure, thrust bearing are set in rotor-support-foundation system, to bear the axial force of rotor-support-foundation system, rotor-support-foundation system be equipped with oil inlet and
Oil back chamber, which is characterized in that thrust bearing includes a thrust sleeve, and the two sides of thrust sleeve are respectively set first, second and push away
Power bearing, the first, second thrust bearing working face corresponding with thrust sleeve are equipped with oil film wedge face, and the two sides working face of thrust sleeve is to push away
Power face, thrust sleeve are equipped with radial and axial oil holes, interconnect between radial direction oil hole and axial oilhole, so that into thrust
The lubricating oil of set converges to oil back chamber after the thrust face of radial direction oil hole, axial oilhole and thrust sleeve two sides.
Preferably, the one side of the first thrust bearing is equipped with the first oil film wedge face and oil-recovery tank, and the first thrust bearing is in disk
Shape, the center be equipped with through-hole, to be set on thrust sleeve, the first oil film wedge face along through-hole circumferential directions；First
The another side of thrust bearing is to get rid of pasta, gets rid of the periphery of pasta and thrust sleeve, backboard is formed together and gets rid of oil pocket, periphery is set
Have and gets rid of the thrust sleeve that pasta matches and get rid of oil groove.
Further, the first oil film wedge face is fan-shaped or annular shape in the shape on continuous perhaps intermittent convex surface convex surface, second
The side of thrust bearing be equipped with the first oil film wedge face corresponding second oil film wedge face, the second oil film wedge face be it is continuous or intermittent convex
Face, the shape on convex surface are fan-shaped or circular.
Further, thrust sleeve includes cylindric sleeve part and circular Oil Guide portion, is equipped with multiple groups two-by-two in Oil Guide portion
The radial and axial oil holes of pairing, the angle of intersection between radial direction oil hole and axial oilhole are 45-135 degree；Rotor-support-foundation system
In be equipped with main shaft, be arranged with transverse bearing on main shaft, thrust sleeve, the second thrust bearing, main shaft and transverse bearing enclose shape jointly
At the first oil pocket, radial direction oil hole is connected with the first oil pocket.
Further, it is square groove, arc groove or triangular groove that thrust sleeve, which gets rid of oil groove,.Oil Guide portion is equipped with 2-10 group two
The radial and axial oil holes of two pairings, these radial and axial oil holes are circumferentially uniformly distributed, radial direction oil hole and
Axial oilhole is round oilhole, oval oilhole, semicircle oilhole or rectangular oilhole.
A kind of application method of the thrust bearing of turbocharger, which is characterized in that using steps are as follows: a, pushing away
Power set is set on main shaft, and the first thrust bearing and the second thrust bearing, thrust sleeve and is respectively set in the two side ends of thrust sleeve
One, the second thrust bearing constitutes thrust bearing, to bear the axial force of rotor-support-foundation system；B, when turbocharger operation,
Turbine will drive entire rotor-support-foundation system high speed rotation, and a part of lubricating oil can enter thrust sleeve, the second thrust bearing, main shaft and diameter
Into the first oil pocket that bearing collectively constitutes, then using the radial and axial oil holes of thrust sleeve, into thrust sleeve
Left and right sides thrust face, final lubricating oil flow radially out left and right sides thrust face, converge to oil back chamber；C, there is a small amount of lubrication
Oil enters the left side of the first thrust bearing by the radial clearance between the first thrust bearing and thrust sleeve, this parts of lubricating oil exists
When by getting rid of oil groove, being dumped between backboard and the first thrust bearing and getting rid of oil pocket, eventually entering into oil back chamber.Rotor-support-foundation system is by whirlpool
Wheel, main shaft, thrust sleeve, pressure impeller and the common structure of locking nut, rotor-support-foundation system middle (center) bearing part includes thrust bearing and diameter
To bearing arrangement, wherein main shaft, transverse bearing, positioning pin and intermediate constitute transverse bearing structure, to bear rotor-support-foundation system
Radial force.
Compared with the existing technology, technical solution of the present invention further includes many details in addition to the improvement of overall technical architecture
The improvement of aspect, specifically, having the advantages that
1, the first, second thrust bearing is respectively set in the two sides of thrust sleeve in improvement project of the present invention, and thrust is placed on
One, the corresponding two sides working face of the second thrust bearing is thrust face, and thrust sleeve is equipped with radial and axial oil holes, so that into
The lubricating oil of thrust sleeve converges to oil back chamber after the thrust face of radial direction oil hole, axial oilhole and thrust sleeve two sides, so that the
One thrust bearing only has seldom outflow of lubrication oil close to pressure impeller side, to solve the Leakage of pressure impeller side；
2, in technical solution of the present invention, the first, second thrust bearing working face corresponding with thrust sleeve is equipped with oil film wedge face, oil film wedge
Face is fan-shaped or annular shape in the shape on continuous perhaps intermittent convex surface convex surface, under the influence of centrifugal force, so that by pushing away
The flow of lubrication in power face increases, the work of thrust face when high revolving speed can be effectively reduced as the revolving speed of turbocharger improves
Make temperature, improves axial carrying capacity；
3, the first, second thrust bearing of the invention is only equipped with oil film wedge face in single side face, does not need overpunch or setting oil circuit,
Reduce manufacturing cost；
4, in the technical program, the another side of the first thrust bearing is to get rid of pasta, gets rid of periphery, the backboard of pasta and thrust sleeve
It is formed together and gets rid of oil pocket, periphery is equipped with and gets rid of the thrust sleeve that pasta matches and get rid of oil groove, so that a small amount of enter the profit for getting rid of pasta
Lubricating oil is passing through when getting rid of oil groove of thrust sleeve, is being dumped into and gets rid of in oil pocket, eventually enter into oil back chamber；
5, delicate structure of the invention, connection and reasonable arrangement, easy making process are easily installed and use, and using effect is outstanding, conducive to pushing away
Wide and application.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the prior art.
Fig. 2 is the partial enlargement diagram of the prior art.
Fig. 3 is the structural schematic diagram of one embodiment of the invention.
Fig. 4 is the enlarged structure schematic diagram that thrust sleeve of the invention and the first, second thrust bearing cooperate.
Fig. 5 is the cross-sectional view of the thrust sleeve of one embodiment of the invention.
Fig. 6 is the first thrust bearing schematic diagram of one embodiment of the invention.
Fig. 7 is the second thrust bearing schematic diagram of one embodiment of the invention.
Fig. 8 is the structural schematic diagram of another embodiment of the present invention.
Fig. 9 is the cross-sectional view of the thrust sleeve of another embodiment of the present invention.
It is marked in figure as follows:
1 thrust sleeve, 2 first thrust bearings, 3 second thrust bearings, 4 main shafts, 5 intermediates, 6 pressure impellers, 7 heat shields, 8 turbines, 9
Oil back chamber, 10 positioning pins；
11 radial direction oil holes, 12 axial oilholes, 13 thrust sleeves get rid of oil groove, 14 sleeve parts, 15 Oil Guide portions, 16 left side thrust faces, 17 right sides
Side-thrust face, 18 piston rings；
21 first oil film wedge faces, 22 bolts hole, 23 oil-recovery tanks；
31 second oil film wedge faces；
41 first oil pockets；
51 transverse bearings；
61 locking nuts, 62 backboards, 621 0 type circles.
Specific embodiment
Below in conjunction with the attached drawing specific embodiment that the present invention will be described in detail, those skilled in the art is made to become apparent from geography
How solution practices the present invention.Although describing the present invention in conjunction with its preferred embodiment, these embodiments are
It illustrates, is not intended to limit the scope of the invention.
As shown in figure 3, a kind of thrust bearing of turbocharger, thrust bearing are set to rotor-support-foundation system
In, to bear the axial force of rotor-support-foundation system, main shaft 4, transverse bearing 51, positioning pin and intermediate 5 constitute radial bearing portion
Point, to bear the radial force of rotor-support-foundation system, rotor-support-foundation system is equipped with oil inlet and oil back chamber, and difference with the prior art exists
It include a thrust sleeve 1 in, thrust bearing, the two sides of thrust sleeve are respectively set the first, second thrust bearing 2,3, first,
Second thrust bearing working face corresponding with thrust sleeve is equipped with oil film wedge face, and the two sides working face of thrust sleeve is thrust face, thrust sleeve
Equipped with radial and axial oil holes, interconnected between radial direction oil hole and axial oilhole, so that into the lubricating oil of thrust sleeve
Oil back chamber is converged to after the thrust face of radial direction oil hole, axial oilhole and thrust sleeve two sides, is located at the of the two sides of thrust sleeve
One, the second thrust bearing position is just corresponding with the position of axial oilhole, and axial oilhole extends transversely through the Oil Guide portion of thrust sleeve simultaneously
And set there are two axial oilhole oil outlet, the position of two axial oilhole oil outlets respectively with the first, second thrust bearing the
One oil film wedge face 21,31 position of the second oil film wedge face are corresponding.
The another side of first thrust bearing is to get rid of pasta, gets rid of the periphery of pasta and thrust sleeve, backboard is formed together and gets rid of
Oil pocket, periphery are equipped with and get rid of the thrust sleeve that pasta matches and get rid of oil groove 13, thrust sleeve get rid of oil groove be square groove, arc groove or
Triangular groove.Thrust sleeve includes cylindric sleeve part 14 and circular Oil Guide portion 15, is equipped with multiple groups two in Oil Guide portion 15
The radial direction oil hole 11 of two pairings and axial oilhole 12, the angle of intersection between radial direction oil hole and axial oilhole are 45-135 degree；Turn
It is equipped with main shaft in subsystem, is arranged with transverse bearing on main shaft, thrust sleeve, the second thrust bearing, main shaft and transverse bearing are common
It is enclosed the first oil pocket 41, radial direction oil hole 11 is connected with the first oil pocket 41.
When it is implemented, thrust sleeve rotates together with main shaft, the lubricating oil in the first oil pocket is in centrifugal force and input pressure
Under the action of, enter the thrust face 16,17 at left and right sides of thrust sleeve by the radial and axial oil holes of thrust sleeve, then into
Enter oil back chamber.There is a small amount of lubricating oil to enter the first thrust by the radial clearance between the first thrust bearing and thrust sleeve simultaneously
The left side of bearing, this parts of lubricating oil are passing through when getting rid of oil groove of thrust sleeve, the oil pocket being dumped between backboard and thrust bearing
It is interior, eventually enter into oil back chamber.
In one embodiment, the present invention can be used on the full floating transverse bearing in similar Fig. 1, also can be used
On semifloating transverse bearing, as shown in figure 3, being typical semifloating transverse bearing, lubricating oil passes through the fuel feed hole of intermediate
Enter the inner ring of transverse bearing with the oilhole of positioning pin, the outer of transverse bearing is then entered by the oilhole of transverse bearing lower part
Circle.The lubricating oil of transverse bearing inner ring and outer ring, a part enter oil back chamber from right side, and another part enters thrust sleeve, the
In the first oil pocket that two thrust bearings, main shaft and transverse bearing are collectively formed, then using the radial direction oil hole of thrust sleeve and axis
Enter the thrust face of the left and right sides to oilhole.Lubricating oil finally flows radially out thrust face, and converges to oil back chamber.
Specifically, thrust sleeve includes cylindric sleeve part and circular Oil Guide portion, and 4 groups are equipped in Oil Guide portion two-by-two
The radial and axial oil holes of pairing, these radial and axial oil holes are circumferentially uniformly distributed, radial direction oil hole and axis
Be 90 degree to the angle of intersection between oilhole, that is, intersect vertically, the benefit to intersect vertically be so that lubricating oil uniformly axially
The both ends oil outlet of oilhole overflows, and the flow of lubrication by thrust face is determined by the flow resistance of input pressure and lubricating oil
Fixed, related with the revolving speed of turbocharger, when supercharger speed is higher, flow of lubrication is mentioned with the revolving speed of turbocharger
It is high and increase.The operating temperature of thrust face when high revolving speed can be effectively reduced improves axial carrying capacity.
As shown in figure 4, being respectively arranged with oil film wedge face on the left of the right side of the first thrust bearing and the second thrust bearing, respectively
Left side thrust face and right side thrust face are formed in the corresponding plane of thrust sleeve.Thrust sleeve, the second thrust bearing, main shaft and radial axle
It holds and together forms the first oil pocket.Thrust sleeve rotates together with main shaft, and the lubricating oil in the first oil pocket is in centrifugal force and oil inlet pressure
Under the action of power, enter the thrust face at left and right sides of thrust sleeve by the radial and axial oil holes of thrust sleeve, subsequently into
Oil back chamber.There is a small amount of lubricating oil to enter the first thrust axis by the radial clearance between the first thrust bearing and thrust sleeve simultaneously
The left side held, this parts of lubricating oil are passing through when getting rid of oil groove of thrust sleeve, are being dumped between backboard and thrust bearing and get rid of oil pocket
It is interior, oil back chamber is eventually entered into, thoroughly solves the Leakage of pressure impeller side, while extending thrust sleeve and first, second and pushing away
The service life of power bearing.
In another embodiment, referring to Fig. 8, Fig. 9, thrust sleeve includes cylindric sleeve part and circular Oil Guide
Portion is equipped with 8 groups of radial and axial oil holes matched two-by-two in Oil Guide portion, these radial and axial oil holes are circumferentially
It is uniformly distributed, the angle of intersection between radial direction oil hole and axial oilhole is 75 degree, i.e. inclination intersection, this inclination intersection, not only
Refer to tilt between radial direction oil hole and axial oilhole and intersect, while also being provided with an inclination angle between radial direction oil hole and horizontal plane
Degree, the range of this tilt angle are 65-85 degree, and the benefit being obliquely installed is when thrust sleeve rotation, and lubrication oil flow rate also can
Accelerate, it is easier to enter on the thrust face of left and right from the outflow of axial oilhole, the work temperature of thrust face when high revolving speed can be effectively reduced
Degree improves axial carrying capacity.Specifically, be equipped with main shaft in rotor-support-foundation system, it is arranged with transverse bearing on main shaft, thrust sleeve,
Second thrust bearing, main shaft and transverse bearing are enclosed the first oil pocket jointly, and radial direction oil hole is connected with the first oil pocket.
The one side of first thrust bearing is equipped with the first oil film wedge face and oil-recovery tank, and oil film wedge face and axial oil hole are located at same diameter
To position, the first thrust bearing is in the form of annular discs, and the center is equipped with through-hole, to be set on thrust sleeve, the first oil film wedge face edge
The circumferential directions of through-hole.Here the first, second thrust bearing is only equipped with oil film wedge face in single side face, does not need additionally to beat
Hole or setting oil circuit, reduce manufacturing cost.
Meanwhile first thrust bearing another side be get rid of pasta, get rid of pasta shape together with the periphery of thrust sleeve, backboard
At getting rid of oil pocket, periphery is equipped with and gets rid of the thrust sleeve that pasta matches and get rid of oil groove.Here it is arc groove that thrust sleeve, which gets rid of oil groove,.Work
When making, thrust sleeve rotates together with main shaft, and the lubricating oil in the first oil pocket is under the action of centrifugal force and input pressure, by pushing away
The inclined radial oilhole of power set and the axial oilhole of inclination enter the thrust face at left and right sides of thrust sleeve, subsequently into oil back chamber.Into
One step, in order to cooperate the setting for tilting axial oilhole, the first oil film wedge face, the second oil film wedge face here is also provided with corresponding inclination oil
Wedge surface, the angle for tilting oil film wedge face and horizontal plane is 82-99 degree.
There is a small amount of lubricating oil to enter the first thrust by the radial clearance between the first thrust bearing and thrust sleeve simultaneously
The left side of bearing, this parts of lubricating oil are passing through when getting rid of oil groove of thrust sleeve, the oil pocket being dumped between backboard and thrust bearing
It is interior, eventually enter into oil back chamber.
In another specific embodiment, the two sides of thrust sleeve are respectively set the first, second thrust bearing, and first, second
Thrust bearing working face corresponding with thrust sleeve is respectively the first, second oil film wedge face, and the two sides working face of thrust sleeve is thrust face,
Thrust sleeve is equipped with radial and axial oil holes, interconnects between radial direction oil hole and axial oilhole, so that into thrust sleeve
Lubricating oil converges to oil back chamber after the thrust face of radial direction oil hole, axial oilhole and thrust sleeve two sides.These radial direction oil holes and
Axial oilhole is circumferentially uniformly distributed, radial and axial oil holes be round oilhole, oval oilhole, semicircle oilhole or
The rectangular oilhole of person.The Oil Guide portion of thrust sleeve, the sleeve part of thrust sleeve is arranged in 6 groups of radial and axial oil holes matched two-by-two
Periphery be then equipped with and get rid of oil groove, the oil groove that gets rid of here is square slot or triangular groove.
Referring in Fig. 6, Fig. 7, the first oil film wedge face is intermittent fan-shaped convex surface, and the height on each convex surface is along rotor direction of rotation
It gradually increases, the height of the latter is the former 1.05--1.1 times, is equipped with groove, the second thrust axis between adjacent fan-shaped convex surface
The side held be equipped with the first oil film wedge face corresponding second oil film wedge face, the second oil film wedge face is intermittent fan-shaped convex surface, adjacent fan
Groove is equipped between shape convex surface, the first, second oil film wedge face is respectively equipped with three pieces of fan-shaped convex surfaces, is uniformly arranged on the first or second and pushes away
The height of the side of power bearing, each convex surface is gradually increased along rotor direction of rotation.
In application method embodiment of the invention, steps are as follows: a, thrust sleeve are set on main shaft, the two sides of thrust sleeve
The first thrust bearing and the second thrust bearing is respectively set in end, and thrust sleeve and the first, second thrust bearing constitute thrust bearing knot
Structure, to bear the axial force of rotor-support-foundation system；B, when turbocharger operation, turbine will drive entire rotor-support-foundation system high speed and revolve
Turn, in the first oil pocket that a part of lubricating oil can be collectively constituted into thrust sleeve, the second thrust bearing, main shaft and transverse bearing,
Then using the radial and axial oil holes of thrust sleeve, into the left and right sides thrust face of thrust sleeve, final lubricating oil edge
Left and right sides thrust face is radially flowed out, oil back chamber is converged to；C, have a small amount of lubricating oil by the first thrust bearing and thrust sleeve it
Between radial clearance enter the left side of the first thrust bearing, this parts of lubricating oil is by being dumped into backboard and the when getting rid of oil groove
Oil pocket is got rid of between one thrust bearing, eventually enters into oil back chamber.
Further, in a step, rotor-support-foundation system is by turbine 8, main shaft 4, thrust sleeve 1, pressure impeller 6 and the common structure of locking nut
It include thrust bearing and transverse bearing structure at, rotor-support-foundation system middle (center) bearing part, wherein main shaft, transverse bearing, positioning pin
Transverse bearing structure is constituted with intermediate, to bear the radial force of rotor-support-foundation system.
In b step, when turbocharger operation, lubricating oil enters diameter by the fuel feed hole of intermediate and the oilhole of positioning pin
To the inner ring of bearing 51, the outer ring of transverse bearing is then entered by the oilhole of transverse bearing lower part.Transverse bearing inner ring and outer
The lubricating oil of circle, a part enter oil back chamber from right side, and another part enters in the first oil pocket；First, second thrust bearing with
The corresponding working face of thrust sleeve is equipped with oil film wedge face, and the two sides working face of thrust sleeve is thrust face, thrust sleeve be equipped with radial direction oil hole and
Axial oilhole interconnects between radial direction oil hole and axial oilhole, so that the lubricating oil into thrust sleeve passes through radial direction oil hole, axis
Oil back chamber is converged to after to oilhole and the thrust face of thrust sleeve two sides.
Specifically, thrust sleeve includes cylindric sleeve part and circular Oil Guide portion, is equipped with multiple groups two in Oil Guide portion
The radial and axial oil holes of two pairings, the angle of intersection between radial direction oil hole and axial oilhole are 110 degree；In rotor-support-foundation system
Equipped with main shaft, transverse bearing is arranged on main shaft, thrust sleeve, the second thrust bearing, main shaft and transverse bearing are enclosed jointly
First oil pocket, radial direction oil hole are connected with the first oil pocket.Oil Guide portion is equipped with 10 groups of radial and axial oil holes matched two-by-two,
These radial and axial oil holes are circumferentially uniformly distributed, and radial and axial oil holes are round oilhole, ellipse oil
Hole, semicircle oilhole or rectangular oilhole.
In step c, the one side of the first thrust bearing is equipped with the first oil film wedge face and oil-recovery tank, and the first thrust bearing is in disk
Shape, the center be equipped with through-hole, to be set on thrust sleeve, the first oil film wedge face along through-hole circumferential directions, wherein
First oil film wedge face is in continuous convex surface, and the shape on convex surface is annular shape, and the side of the second thrust bearing is equipped with to be faced with the first oil film wedge
The the second oil film wedge face answered, the second oil film wedge face are continuous convex surface, and the shape on convex surface is annular shape.
The another side of first thrust bearing is to get rid of pasta, gets rid of the periphery of pasta and thrust sleeve, backboard is formed together and gets rid of
Oil pocket, periphery are equipped with and get rid of the thrust sleeve that pasta matches and get rid of oil groove, and it is arc groove that thrust sleeve here, which gets rid of oil groove,.
It should be pointed out that can also have the embodiment of a variety of transformation and remodeling for the present invention through absolutely proving,
It is not limited to the specific embodiment of above embodiment.Above-described embodiment as just explanation of the invention, rather than to this
The limitation of invention.In short, protection scope of the present invention should include that those are apparent to those skilled in the art
Transformation or substitution and remodeling, and be determined by the appended claims.
Claims (10)
1. a kind of thrust bearing of turbocharger, thrust bearing are set in rotor-support-foundation system, turn to bear
The axial force of subsystem, rotor-support-foundation system are equipped with oil inlet and oil back chamber, which is characterized in that thrust bearing includes a thrust
Set, the first, second thrust bearing, the work corresponding with thrust sleeve of the first, second thrust bearing is respectively set in the two sides of thrust sleeve
Face is equipped with oil film wedge face, and the two sides working face of thrust sleeve is thrust face, and thrust sleeve is equipped with radial and axial oil holes, radial direction oil hole
It is interconnected between axial oilhole, so that the lubricating oil into thrust sleeve passes through radial direction oil hole, axial oilhole and thrust sleeve two
Oil back chamber is converged to after the thrust face of side.
2. a kind of thrust bearing of turbocharger according to claim 1, which is characterized in that the first thrust axis
The one side held is equipped with the first oil film wedge face and oil-recovery tank, and oil film wedge face and axial oil hole are located at same radial position, the first thrust axis
Hold it is in the form of annular discs, the center be equipped with through-hole, to be set on thrust sleeve, the first oil film wedge face along through-hole circumferencial direction cloth
It sets；
The another side of first thrust bearing is to get rid of pasta, gets rid of the periphery of pasta and thrust sleeve, backboard is formed together and gets rid of oil pocket,
Periphery is equipped with and gets rid of the thrust sleeve that pasta matches and get rid of oil groove.
3. a kind of thrust bearing of turbocharger according to claim 2, which is characterized in that the first oil film wedge face
Shape in continuous perhaps intermittent convex surface convex surface is fan-shaped or annular shape, and the height on each convex surface is along rotor direction of rotation
It gradually increases；The side of second thrust bearing be equipped with the first oil film wedge face corresponding second oil film wedge face, the second oil film wedge face is continuous
Perhaps the shape on intermittent convex surface convex surface is fan-shaped or circular, and the height on each convex surface gradually increases along rotor direction of rotation
Add.
4. a kind of thrust bearing of turbocharger according to claim 1, which is characterized in that thrust sleeve includes
Cylindric sleeve part and circular Oil Guide portion, the radial and axial oil holes matched two-by-two equipped with multiple groups in Oil Guide portion,
Angle of intersection between radial direction oil hole and axial oilhole is 45-135 degree；It is equipped with main shaft in rotor-support-foundation system, is arranged with diameter on main shaft
To bearing, thrust sleeve, the second thrust bearing, main shaft and transverse bearing are enclosed the first oil pocket, radial direction oil hole and first jointly
Oil pocket is connected.
5. a kind of thrust bearing of turbocharger according to claim 2, which is characterized in that thrust sleeve gets rid of oil
Slot is square groove, arc groove or triangular groove.
6. a kind of thrust bearing of turbocharger according to claim 4, which is characterized in that Oil Guide portion is equipped with
The radial and axial oil holes that 2-10 group is matched two-by-two, these radial and axial oil holes are circumferentially uniformly distributed, diameter
It is round oilhole, oval oilhole, semicircle oilhole or rectangular oilhole to oilhole and axial oilhole.
7. a kind of application method of the thrust bearing of turbocharger according to claim 1, which is characterized in that
Using steps are as follows: a, thrust sleeve are set on main shaft, and the two side ends of thrust sleeve are respectively set the first thrust bearing and second and push away
Power bearing, thrust sleeve and the first, second thrust bearing constitute thrust bearing, to bear the axial force of rotor-support-foundation system；b,
When turbocharger operation, turbine will drive entire rotor-support-foundation system high speed rotation, and a part of lubricating oil can enter thrust sleeve, second
In the first oil pocket that thrust bearing, main shaft and transverse bearing collectively constitute, then using the radial direction oil hole of thrust sleeve and axial direction
Oilhole, into the left and right sides thrust face of thrust sleeve, final lubricating oil flows radially out left and right sides thrust face, converges to back
Oil pocket；C, a small amount of lubricating oil enters a left side for the first thrust bearing by the radial clearance between the first thrust bearing and thrust sleeve
Side, this parts of lubricating oil is by being dumped between backboard and the first thrust bearing and getting rid of oil pocket, eventually enter into back when getting rid of oil groove
Oil pocket.
8. a kind of application method of the thrust bearing of turbocharger according to claim 7, which is characterized in that
In a step, rotor-support-foundation system is collectively formed by turbine, main shaft, thrust sleeve, pressure impeller and locking nut, rotor-support-foundation system axis bearing portion
Dividing includes thrust bearing and transverse bearing structure, and wherein main shaft, transverse bearing, positioning pin and intermediate constitute transverse bearing
Structure, to bear the radial force of rotor-support-foundation system.
9. a kind of application method of the thrust bearing of turbocharger according to claim 7, which is characterized in that
In b step, when turbocharger operation, lubricating oil enters transverse bearing by the fuel feed hole of intermediate and the oilhole of positioning pin
Then inner ring enters the outer ring of transverse bearing by the oilhole of transverse bearing lower part；
The lubricating oil of transverse bearing inner ring and outer ring, a part enter oil back chamber from right side, and another part enters in the first oil pocket；
First, second thrust bearing working face corresponding with thrust sleeve is equipped with oil film wedge face, and the two sides working face of thrust sleeve is thrust face, pushes away
Power is arranged with radial and axial oil holes, interconnects between radial direction oil hole and axial oilhole, so that into the profit of thrust sleeve
Lubricating oil converges to oil back chamber after the thrust face of radial direction oil hole, axial oilhole and thrust sleeve two sides.
10. a kind of application method of the thrust bearing of turbocharger according to claim 7, feature exist
In, in step c, the one side of the first thrust bearing is equipped with the first oil film wedge face and oil-recovery tank, and the first thrust bearing is in the form of annular discs,
At center be equipped with through-hole, to be set on thrust sleeve, the first oil film wedge face along through-hole circumferential directions；First thrust axis
The another side held is to get rid of pasta, gets rid of the periphery of pasta and thrust sleeve, backboard is formed together and gets rid of oil pocket, and periphery is equipped with and gets rid of
The thrust sleeve that pasta matches gets rid of oil groove.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114060152A (en) * | 2021-12-24 | 2022-02-18 | 常州环能涡轮动力股份有限公司 | Fuel oil atomization structure of micro turbojet engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060152A (en) * | 2021-12-24 | 2022-02-18 | 常州环能涡轮动力股份有限公司 | Fuel oil atomization structure of micro turbojet engine |
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