CN207064465U - A kind of automobile engine refractory seals bearing - Google Patents
A kind of automobile engine refractory seals bearing Download PDFInfo
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- CN207064465U CN207064465U CN201720367305.5U CN201720367305U CN207064465U CN 207064465 U CN207064465 U CN 207064465U CN 201720367305 U CN201720367305 U CN 201720367305U CN 207064465 U CN207064465 U CN 207064465U
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- inner race
- outer ring
- sealing
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Abstract
The utility model discloses a kind of automobile engine refractory seals bearing, including：Bearing outer ring is sheathed on the outside of bearing inner race, and rolling steel ball is evenly arranged in the ball raceway groove between bearing inner race and bearing outer ring by retainer；Both side ends are provided with dust cap and sealing ring between bearing inner race and bearing outer ring, and are filled with high temperature-resistant grease in the cavity between sealing ring and rolling steel ball；The ball trench bottom of bearing inner race is provided with oiling raceway groove, and the oil filler point connected with oiling raceway groove is provided with a side end face of bearing inner race, and the pouring orifice of oil filler point has been connected through a screw thread plug.The utility model is simple in construction, is easy to add high temperature-resistant grease, sealed reliable, stabilized structure is unlikely to deform, and bearing steel and special Technology for Heating Processing of the high temperature resistant at 600 DEG C or so are employed, the service life of high temperature resistant bearing is substantially increased, there is preferable economic market value.
Description
Technical field
The present invention relates to a kind of automobile engine refractory seals bearing, belongs to automobile engine bearings manufacturing technology neck
Domain.
Background technology
Existing automobile engine bearings, plain bearing steel are generally adopted by, are used after high tempering.Such material
The bearing of material, high temperature resistant degree is much not as good as the temperature of engine interior.So at work, high temperature often occurs in bearing
Phenomena such as lower corrosion, hardness soften, and raceway and rolling element wear quickly, makes bearing occur fatigue too early, shortens the longevity of bearing
Life.And existing automobile engine bearings structure, often because high temperature-resistant grease volatility, and sealing ring sealing not
It is enough, and can not be in the case of a high temperature long lasting for work.
Therefore, this invention address that a kind of exploitation resistance to height of automobile engine simple in construction, easy to use, sealed reliable
Warm sealed bearings, it is easy to add high temperature-resistant grease, and uses special exotic material and Technology for Heating Processing, is fully able to bear
The high temperature of engine interior, greatly prolong the service life of high temperature resistant bearing.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention provides a kind of resistance to height of automobile engine
Warm sealed bearings, there is simple in construction, easy to use, sealed reliable, be easy to add high temperature-resistant grease, stabilized structure is not
It is yielding, and special exotic material and Technology for Heating Processing are used, greatly prolong the service life of high temperature resistant bearing.
Technical scheme：To achieve the above object, the technical solution adopted by the present invention is：
A kind of automobile engine refractory seals bearing, including bearing inner race, bearing outer ring, rolling steel ball, retainer,
Sealing ring and dust cap；
Wherein, the bearing outer ring is sheathed on the outside of bearing inner race, and middle part is set between bearing inner race and bearing outer ring
Ball raceway groove is equipped with, the rolling steel ball is evenly arranged in ball raceway groove by retainer, to realize bearing inner race and bearing
The relative rotation of outer ring；Both side ends are provided with dust cap between bearing inner race and bearing outer ring, dust cap and rolling steel ball it
Between be provided with sealing ring, and be filled with high temperature-resistant grease in the cavity between sealing ring and rolling steel ball；The ball of bearing inner race
Trench bottom is provided with oiling raceway groove, and the oil filler point connected with oiling raceway groove is provided with a side end face of bearing inner race, and
The pouring orifice of oil filler point has been connected through a screw thread plug.It is resistance in oil filler point and oiling raceway groove due to gravity and centrifugal action
High-temperature grease can be rapidly entered in bearing bore, avoided high temperature resistant bearing and worked in the case where lubrication is inadequate or unlubricated,
Make bearing premature fatigue failures.
Preferably, in order to ensure the sealing of sealing ring, the sealing ring includes support frame and is coated on support frame
On seal, and the inner of seal be provided with bearing inner race coordinate sealing, the outer end of seal is provided with and axle
The installation portion that bearing outer-ring coordinates；The lateral wall end of bearing inner race is in step-like, and sealing is two-lid sealing structure, with bearing
The outside ledge structure of inner ring is engaged, simple in construction, and better seal effect is played while reducing friction.
Preferably, the outer end of the support frame tilts and extended in installation portion, and the inner of support frame tilts extension
To sealing, the steadiness of seal is effectively increased, prevents the loosening of seal, and high temperature lower seal from deforming and leading
The gas leak of the oil leakage of cause.
Preferably, the madial wall end set of the bearing outer ring has outer ring groove, and installation portion is bulge-structure, and outer
Enclose groove and form embedded cooperation, so as to ensure the sealing of installation portion.
Preferably, end face of the oil filler point along bearing outer ring is circumferentially uniformly distributed, and close to the one of plug in oil filler point
End is filled with sponge.Sponge plays a part of volatilization prevention, while reduces vibration so that outer ring working stability.
Preferably, the bearing inner race, bearing outer ring, rolling steel ball and retainer use special high temperature-resistant bearing steel
Into the special high temperature-resistant bearing steel includes following chemical composition and mass percent：0.17~0.22%C, 0.20~
0.40%Mn, 0~0.35%Si, 0~0.02%P, 0~0.015%S, 2.75~3.25%Cr, 0.5~0.9%Ni, 9.5~
10.5%W, 0.35~0.50%V, it the rest is Fe and some trace elements.
Relative to plain bearing steel, the special high temperature-resistant bearing steel reduces the content of carbon (C) element, because carbon content
The too high plasticity that can reduce steel, impact flexibility and atmospheric corrosion resistance ability；Add chemical element chromium (Cr) and nickel (Ni)
Content：The increase of chromium (Cr) content can improve the intensity and wearability of steel, promote the surface of steel to form passivating film, significantly improve steel
Decay resistance, extend life-spans of steel；The increase of nickel (Ni) constituent content can also improve steel strength, and to air
The anticorrosive of middle soda acid can give power, and play a part of extending the service life of high temperature middle (center) bearing steel.
Special high temperature-resistant bearing steel strictly controls harmful element sulphur (S) and the content of phosphorus (P)：Chemical element sulphur (S) contains
When measuring high, the plasticity of steel is easily reduced at high temperature, in addition, in process is ground, easily causes the hot pure phenomenon of steel,
The secondary quenching of material is caused, changes the metallographic and hardness of material；When chemical element phosphorus (P) content is high, easily increase Temper brittleness
Property, the plasticity and toughness of steel are significantly reduced, causes steel embrittlement phenomenon occur in process is ground.
Special high temperature-resistant bearing steel adds the content of chemical element tungsten (W) and vanadium (V)：Tungsten fusing point is higher, and proportion is larger,
After 600 DEG C of high temperings, enhance the intensity and wearability of bearing steel, improve the tensile strength of steel, at the same also
The bearing steel high temperature resistant limit brings up to 600 DEG C or so；The increase of chemical element vanadium (V) content, and play under HTHP
Corrosion resistance, increase quenching temper after steel microstructure stability and wearability.So as to extend the life-span of bearing.
Preferably, the Technology for Heating Processing of the special high temperature-resistant bearing steel comprises the following steps：
A, normalizing：1140~1160 DEG C are heated in Equipment for Heating Processing stove, after being incubated 120 minutes, at 845~855 DEG C
120 minutes are incubated in salt bath, is then air-cooled to normal temperature；
B, anneal：840~860 DEG C are heated in Equipment for Heating Processing stove, after being incubated 3 hours, is furnace-cooled to 295~305
DEG C, normal temperature is then air-cooled to, material hardness is controlled in 269HBS or so；
C, quench：It is heated to 840~860 DEG C in Equipment for Heating Processing stove, after preheating 20 minutes, continue to be heated to 1100~
1120 DEG C, after being incubated 10 minutes, quench into 500 DEG C of salt baths, after temperature equalization, be air-cooled to normal temperature, then carry out -70 DEG C
~-80 DEG C of cold treatment, for control residual austenite content below 5%, excessive residual austenite, which is known from experience, causes hardness to decline；
D, it is tempered：Mill processing before must high tempering twice, every time through 550~570 DEG C of high temperature in Equipment for Heating Processing stove
3 hours are tempered, are then air-cooled to normal temperature, hardness control exists：61.5~63.5HRC.
Special high temperature-resistant bearing steel is after special heat treatment, and its metallographic structure under 600 DEG C of conditions of high temperature is stable, material
The intensity of material is improved, and material surface enhances oxidation resistance and resistance to corrosion, improve bearing material plasticity and
Toughness, extend the fatigue life of material；The stress inside steel is eliminated after repeatedly tempering, prevention steel are processed in mill
Deformation in journey.
Preferably, the Equipment for Heating Processing stove uses the electric induction Equipment for Heating Processing stove with argon gas protection.This equipment stove
Deformation when part is heat-treated and surface oxidation decarburized layer deepness, the reliability of the bearing parts of sensed heating quenching can be reduced
Than in conventional electric furnace heating quenching it is high by 10%~20%.
Beneficial effect：A kind of automobile engine refractory seals bearing provided by the invention, relative to prior art, tool
Have the advantage that：1st, simple in construction, easy to use, sealed reliable, stabilized structure is unlikely to deform, and realizes high temperature-resistant grease
Quick and convenient addition；2nd, using bearing steel of the high temperature resistant at 600 DEG C or so and special Technology for Heating Processing, avoid because of high temperature
Bearing hardness is caused to soften, bearing life caused by bearing premature failure fatigue shortens.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention；
Figure includes：1st, bearing inner race, 2, bearing outer ring, 3, rolling steel ball, 4, retainer, 5, oiling raceway groove, 6, oiling
Hole, 7, plug, 8, support frame, 9, seal, 10, installation portion, 11, interior step, 12, slope, 13, outer step, 14, in sealing
Lip, 15, sealing outer lip, 16, outer ring groove, 17, sponge.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings.
It is a kind of automobile engine refractory seals bearing as shown in Figure 1, including bearing inner race 1, bearing outer ring 2, rolling
Dynamic steel ball 3, retainer 4, sealing ring and dust cap；
Wherein, the bearing outer ring 2 is sheathed on the outside of bearing inner race 1, and between bearing inner race 1 and bearing outer ring 2 in
Portion is provided with ball raceway groove, and the rolling steel ball 3 is evenly arranged in ball raceway groove by retainer 4, to realize bearing inner race 1
With the relative rotation of bearing outer ring 2；Both side ends are provided with dust cap, dust cap and rolling between bearing inner race 1 and bearing outer ring 2
Sealing ring is provided between dynamic steel ball 3, and high temperature-resistant grease is filled with the cavity between sealing ring and rolling steel ball 3；Bearing
The ball trench bottom of inner ring 1 is provided with oiling raceway groove 5, and is provided with a side end face of bearing inner race 1 and connects with oiling raceway groove 5
Four logical oil filler points 6, and the pouring orifice of oil filler point 6 has been connected through a screw thread plug 7；The oil filler point 6 is along bearing outer ring 2
End face is circumferentially uniformly distributed, and vertically and is radially extended, and one end in oil filler point 6 close to plug 7 is filled with sponge 17.
In the present embodiment, the sealing ring includes support frame 8 and the seal 9 being coated on support frame 8, and seals
The inner of body 9 is provided with the sealing coordinated with bearing inner race 1, and the outer end of seal 9 is provided with the peace coordinated with bearing outer ring 2
Dress portion 10；
The lateral wall end of bearing inner race 1 in step-like, including arrange from inside to outside vertically interior step 11, slope 12
And outer step 13, the diameter of outer step 13 is less than interior step 11, and is connected between outer step 13 and interior step 11 by slope 12
Transition；The sealing is two-lid sealing structure, including sealing epipharynx 14 and sealing outer lip 15, and it is outer with sealing to seal epipharynx 14
Arc-shaped recess is provided between lip 15；Sealing epipharynx 14, which tilts, to be extended on interior step 11 and is engaged with interior step 11；Institute
State the sealing inclination of outer lip 15 to extend in outer step 13, and be engaged with slope 12.
In the present embodiment, the outer end of the support frame 8, which tilts, to be extended in installation portion 10, and the inner of support frame 8
Inclination is extended in sealing；The madial wall end set of the bearing outer ring 2 has outer ring groove 16, and installation portion 10 is projection
Structure, form insertion with outer ring groove 16 and coordinate, the section of outer ring groove 16 and installation portion 10 is trapezoidal.
In the present embodiment, the bearing inner race 1, bearing outer ring 2, rolling steel ball 3 and retainer 4 use special high temperature-resistant axle
Hold steel to be made, the special high temperature-resistant bearing steel includes following chemical composition and mass percent：0.17~0.22%C, 0.20
~0.40%Mn, 0~0.35%Si, 0~0.02%P, 0~0.015%S, 2.75~3.25%Cr, 0.5~0.9%Ni, 9.5
~10.5%W, 0.35~0.50%V, it the rest is Fe and some trace elements；The special high temperature-resistant bearing Heat-Treatment of Steel work
Skill comprises the following steps：
A, normalizing：1140~1160 DEG C are heated in the electric induction Equipment for Heating Processing stove protected with argon gas, insulation 120
After minute, 120 minutes are incubated in 845~855 DEG C of salt baths, is then air-cooled to normal temperature；
B, anneal：840~860 DEG C are heated in the electric induction Equipment for Heating Processing stove protected with argon gas, insulation is 3 small
Shi Hou, 295~305 DEG C are furnace-cooled to, are then air-cooled to normal temperature, material hardness is controlled in 269HBS or so；
C, quench：840~860 DEG C are heated in the electric induction Equipment for Heating Processing stove protected with argon gas, preheats 20 points
Zhong Hou, continue to be heated to 1100~1120 DEG C, after being incubated 10 minutes, quench into 500 DEG C of salt baths, after temperature equalization, air cooling
To the cold treatment of normal temperature, then -70 DEG C~-80 DEG C of progress, for control residual austenite content below 5%, excessive remnants are difficult to understand
Family name, which knows from experience, causes hardness to decline；
D, it is tempered：Mill processing before must high tempering twice, every time in the electric induction Equipment for Heating Processing protected with argon gas
Through 3 hours of 550~570 DEG C of high temperings in stove, normal temperature is then air-cooled to, hardness control exists：61.5~63.5HRC.
The embodiment of the present invention is as follows：
During installation, make sealing epipharynx 14 and interior step 11 inconsistent first, and make the side of sealing outer lip 15 and outer step 13
It is inconsistent, opposite side and the compression fit of slope 12；Then by elastic crimp, installation portion 10 is embedded in outer ring groove 16
It is interior, realize the installation of sealing ring and bearing ring；After the installation for completing side sealing ring, out of bearing another side bearing cavity
High temperature-resistant grease is injected, then carries out the installation of opposite side sealing ring again.
So when the grease in bearing channel flows outwardly, spilling for grease can be effectively prevented by sealing epipharynx 14；
And when air-flow axially presses against sealing ring top, because of installation portion 10 and the close contact of outer ring groove 16, effectively air-flow can be prevented to enter
Bearing inner；When air-flow axially presses against sealing ring lower potion, because sealing outer lip 15 is close on slope 12, gas can be effectively prevented
Stream enters Bearing inner.Rigid support plays a part of in support frame 8 and its branch, effectively reduces the loosening of sealing ring, prevents
Grease is spilt caused by the deformation of high temperature lower seal.
In use, realizing the sealing function to bearing by sealing ring and dust cap, adjacent rolling is kept by retainer 4
The distance between steel ball 3, and high temperature-resistant grease is quickly added into bearing cavity by oil filler point 6 and oiling raceway groove 5, it is convenient high
Effect, added without shutting down, effectively extend the stream time of high temperature resistant bearing.After use, sponge is put into oil filler point 6
17, the i.e. achievable sealing of plug 7, prevents from being mixed into air plankton etc. in the cavity between sealing ring and rolling steel ball 3 beyond the Great Wall.
Experiment show that physical and chemical index of the kind of bearings under 300-600 degree hot conditions has：
1st, tensile strength sigma b (MPa)：1315~1650
2nd, yield point σ s (MPa)：1065
3rd, elongation δ (MPa)：10
4th, the contraction percentage of area30
5th, impact toughness α κ (J/ square centimeters)：5.4~8.4
6th, hardness (HRC)：60~65
It follows that the present invention uses bearing steel and special Technology for Heating Processing of the high temperature resistant at 600 DEG C or so, avoid
Because high temperature causes bearing hardness to soften, bearing life caused by bearing premature failure fatigue shortens；Realize resistance to height simultaneously
The quick and convenient addition of warm grease, and it is simple in construction, sealed reliable, stabilized structure is unlikely to deform, and effectively increases high temperature resistant axle
The service life held.
Described above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (5)
- A kind of 1. automobile engine refractory seals bearing, it is characterised in that including bearing inner race (1), bearing outer ring (2), Rolling steel ball (3), retainer (4), sealing ring and dust cap；Wherein, the bearing outer ring (2) is sheathed on the outside of bearing inner race (1), and bearing inner race (1) and bearing outer ring (2) it Between middle part be provided with ball raceway groove, the rolling steel ball (3) is evenly arranged in ball raceway groove by retainer (4)；In bearing Both side ends are provided with dust cap between circle (1) and bearing outer ring (2), and sealing is provided between dust cap and rolling steel ball (3) Circle, and it is filled with high temperature-resistant grease in the cavity between sealing ring and rolling steel ball (3)；The ball raceway groove bottom of bearing inner race (1) Portion is provided with oiling raceway groove (5), and the oil filler point connected with oiling raceway groove (5) is provided with a side end face of bearing inner race (1) (6), and the pouring orifice of oil filler point (6) has been connected through a screw thread plug (7).
- A kind of 2. automobile engine refractory seals bearing according to claim 1, it is characterised in that the sealing ring Including support frame (8) and the seal (9) being coated on support frame (8), and the inner of seal (9) is provided with and bearing The sealing that inner ring (1) coordinates, the outer end of seal (9) are provided with the installation portion (10) coordinated with bearing outer ring (2)；In bearing The lateral wall end of (1) is enclosed in step-like, and sealing is two-lid sealing structure, the outside ledge structure with bearing inner race (1) It is engaged.
- A kind of 3. automobile engine refractory seals bearing according to claim 2, it is characterised in that the support rib The outer end of frame (8), which tilts, to be extended in installation portion (10), and inner tilt of support frame (8) is extended in sealing.
- 4. a kind of automobile engine refractory seals bearing according to claim 2, it is characterised in that outside the bearing The madial wall end set of circle (2) has outer ring groove (16), and installation portion (10) is bulge-structure, is formed with outer ring groove (16) It is embedded to coordinate.
- A kind of 5. automobile engine refractory seals bearing according to claim 1, it is characterised in that the oil filler point (6) circumferentially it is uniformly distributed along the end face of bearing outer ring (2), and one end in oil filler point (6) close to plug (7) is filled with sponge (17)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720367305.5U CN207064465U (en) | 2017-04-10 | 2017-04-10 | A kind of automobile engine refractory seals bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720367305.5U CN207064465U (en) | 2017-04-10 | 2017-04-10 | A kind of automobile engine refractory seals bearing |
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| Publication Number | Publication Date |
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| CN207064465U true CN207064465U (en) | 2018-03-02 |
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ID=61501165
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| CN201720367305.5U Active CN207064465U (en) | 2017-04-10 | 2017-04-10 | A kind of automobile engine refractory seals bearing |
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| CN (1) | CN207064465U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837995A (en) * | 2017-04-10 | 2017-06-13 | 无锡市海峰海林精工机械制造有限公司 | A kind of automobile engine refractory seals bearing |
-
2017
- 2017-04-10 CN CN201720367305.5U patent/CN207064465U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837995A (en) * | 2017-04-10 | 2017-06-13 | 无锡市海峰海林精工机械制造有限公司 | A kind of automobile engine refractory seals bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220921 Address after: No.88-A2, Qianyao Road, Qinxin Private Park, Wuxi City, Jiangsu Province, 214000 Patentee after: WUXI HAIFENG & HAILIN PRECISION BEARING Co.,Ltd. Address before: 214151 88-M, Qianyao Road, Qinxin Community, Rongxiang Street, Binhu District, Wuxi City, Jiangsu Province Patentee before: WUXI HAIFENG HAILIN PRECISION MACHINERY MANUFACTURING Co.,Ltd. |
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| TR01 | Transfer of patent right |