CN108488239A - Rolling bearing - Google Patents

Rolling bearing Download PDF

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Publication number
CN108488239A
CN108488239A CN201810210241.7A CN201810210241A CN108488239A CN 108488239 A CN108488239 A CN 108488239A CN 201810210241 A CN201810210241 A CN 201810210241A CN 108488239 A CN108488239 A CN 108488239A
Authority
CN
China
Prior art keywords
ring
annular
sealing
rolling bearing
inner ring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810210241.7A
Other languages
Chinese (zh)
Inventor
张忠学
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Priority to CN201810210241.7A priority Critical patent/CN108488239A/en
Publication of CN108488239A publication Critical patent/CN108488239A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/762—Sealings of ball or roller bearings by means of a fluid
    • F16C33/763—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap
    • 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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
    • F16C33/7806—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for spherical roller bearings
    • 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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
    • F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
    • F16C33/7823—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region of sealing lips
    • 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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
    • F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

A rolling bearing comprising: the inner ring and the outer ring are concentrically arranged; the rolling bodies are arranged between the inner ring and the outer ring, and the inner ring and the outer ring realize relative rotation through the rolling bodies; an annular seal cover provided at least at one axial end of the rolling bearing, the annular seal cover having a radially outer end facing the outer ring and a radially inner end facing the inner ring; one of the radial outer end and the radial inner end is fixedly connected with the corresponding outer ring or inner ring and forms sealing; the other one is provided with at least one annular sealing lip which is suitable for forming movable sealing with the corresponding outer ring or inner ring; the rolling bearing further includes: the retainer ring is arranged on one side, opposite to the rolling body, of the annular sealing cover, and is fixedly arranged on the inner ring or the outer ring corresponding to the annular sealing lip to form sealing; wherein at least one of the annular sealing lips is in contact sealing with the retainer ring.

Description

Rolling bearing
Technical field
The present invention relates to technical field of bearings, and in particular to a kind of rolling bearing.
Background technology
Rolling bearing generally includes inner ring, outer ring and several rolling elements being arranged between the inner ring, outer ring, inner ring and Outer ring is by rolling element to realize relative rotation.In the prior art, rolling bearing, which also typically includes, is separately positioned on bearing axial direction Two annular sealing covers at both ends, annular sealing cover form seal chamber with inner ring, outer ring, and rolling element is arranged in seal chamber.
Radial one end of annular sealing cover is fixedly connected with outer ring or inner ring, and the radial other end forms close with inner ring or outer ring Envelope to prevent extraneous steam or dust from entering in seal chamber, while being also prevented from the lubricating oil in seal chamber or lubricating grease outflow To the external world.To ensure that there is good verticity always between inner ring and outer ring, ensure the service life of rolling bearing.
But the sealing in the prior art between annular sealing cover and inner ring or outer ring is unsatisfactory, extraneous steam, dust Still it can be flowed into seal chamber by seal clearance, the lubricating grease or lubricating oil in seal chamber can also flow out to the external world, cause Rolling bearing is easy to happen damage, reduces the service life of rolling bearing.
Invention content
Problems solved by the invention is the sealing between annular sealing cover and inner ring or outer ring in prior art rolling bearing It is unsatisfactory, cause rolling bearing to be easy to happen damage, reduces the service life of rolling bearing.
To solve the above problems, the present invention provides a kind of rolling bearing, including：The inner ring and outer ring being arranged concentrically；It is several Rolling element is arranged between the inner ring, outer ring, and relative rotation is realized in the inner ring, outer ring by the rolling element；At least set Set the annular sealing cover in axial one end of the rolling bearing, the annular sealing cover have towards outer ring radial outer end and Towards the radial inner end of inner ring；One of the radial outer end, radial inner end are fixedly connected with the corresponding outer ring or interior Circle, and form sealing；It is another have at least one annular seal lip, the annular seal lip be suitable for the corresponding outer ring or Inner ring forms movable sealing；The rolling bearing further includes：It is arranged in the annular sealing cover backwards to the rolling element side Baffle ring, the baffle ring is fixedly installed on inner ring corresponding with the annular seal lip or outer ring, and forms sealing；Wherein, at least One annular seal lip contacts sealing with the baffle ring.
Optionally, the baffle ring includes axially extending first part and the second part radially extended, described first The periphery wall for being fixedly installed on the inner ring, the second part is divided to extend towards the outer ring；It is set or, the first part is fixed It is placed in the internal perisporium of the outer ring, the second part extends towards the inner ring.
Optionally, at least one annular seal lip contacts sealing with the first part；And/or at least one A annular seal lip contacts sealing with the second part.
Optionally, at least one annular seal lip and first part's non-contact seals；And/or at least One annular seal lip and the second part non-contact seals.
Optionally, the second part extends close to the inner peripheral surface of the outer ring from the inner ring；Or, described second Divide the peripheral surface that the inner ring is extended close to from the outer ring.
Optionally, at least two annular seal lips contact sealing with the baffle ring, form the two neighboring ring of contact sealing Shape sealing lip surrounds annular seal space with baffle ring, and the ring packing intracavitary filling lubricant medium or the ring packing intracavitary are set There is sealing ring.
Optionally, sealing is contacted one of in the two neighboring annular seal lip with the first part, it is another It is a to contact sealing with the second part.
Optionally, at least one annular seal lip contacts sealing with the corresponding outer ring or inner ring；And/or until A few annular seal lip and the corresponding outer ring or inner ring non-contact seals.
Optionally, the annular sealing cover includes the first annular sealing for being separately positioned on rolling bearing axial direction both ends Lid and the second annular sealing cover, the first annular sealing cover, the second annular sealing cover, inner ring and outer ring surround seal chamber.
Optionally, the baffle ring includes the first baffle ring and second gear for being separately positioned on rolling bearing axial direction both ends Circle.
Compared with prior art, technical scheme of the present invention has the following advantages：
The rolling bearing, including inner ring, outer ring, rolling element and the annular for being arranged at rolling bearing axial direction one end Sealing cover, one of the radial outer end of annular sealing cover, radial inner end are fixedly connected with corresponding outer ring or inner ring, and are formed Sealing.By the way that baffle ring corresponding with annular sealing cover is arranged in axial one end of rolling bearing, and make annular sealing cover and baffle ring Contact sealing.Baffle ring can stop that extraneous steam, dust etc. are in direct contact annular sealing cover to a certain extent, prevent from contacting The radial outer end or radial inner end of sealing largely suffer damage.Also, compared to outer ring or inner ring, the energy on baffle ring It is enough easier to process the sealing surface with degree of precision, keep the radial outer end of the sealing surface and annular sealing cover or diameter inside End in contact seals, and can promote the service life of annular sealing cover.
Further, annular seal space is surrounded between the two neighboring annular seal lip of formation contact sealing, by ring Lubricant medium is filled in shape seal chamber, after lubricant medium fills full entire annular seal space, lubricant medium annular in shape is suitable In sealing ring, it can further completely cut off seal chamber and the external world, play the role of sealing；Meanwhile lubricant medium can also be to adjacent Two annular seal lips are lubricated and cool down, and to reduce friction of the annular seal lip in relative movement, avoid annular Sealing lip quick aging due to temperature is too high, influences sealing effect.
Description of the drawings
Fig. 1 is the sectional view of specific embodiment of the invention rolling bearing, to show internal structure；
Fig. 2 is the partial sectional view of rolling bearing shown in Fig. 1；
Fig. 3 is enlarged drawing of the rolling bearing shown in Fig. 2 in a-quadrant；
Fig. 4 is enlarged drawing of the rolling bearing shown in Fig. 3 in B area；
Fig. 5 is the three-dimensional structure diagram of first annular sealing cover in rolling bearing shown in Fig. 1；
Fig. 6 is the three-dimensional structure diagram of the first baffle ring in rolling bearing shown in Fig. 1.
Specific implementation mode
To make the above purposes, features and advantages of the invention more obvious and understandable, below in conjunction with the accompanying drawings to the present invention Specific embodiment be described in detail.
Referring to Fig.1, Fig. 2, a kind of rolling bearing 100, including be arranged concentrically inner ring 10, outer ring 20,10 He of the inner ring Several rolling elements 30 and retainer 31 are equipped between outer ring 20, the rolling element 30 uniformly divides along the circumferential of rolling bearing 100 Cloth, the retainer 31 are used to limit the specific location of rolling element 30, and the inner ring 10, outer ring 20 are by rolling element 30 to realize Relative rotation.
The rolling bearing 100 further includes first annular sealing cover 40 and the second annular sealing cover 50, described first annular Sealing cover 40, the second annular sealing cover 50 are separately positioned on the axial both ends of rolling bearing 100, with the inner ring 10 and outer ring 20 Seal chamber 100a is surrounded, the rolling element 30 and retainer 31 are arranged in the seal chamber 100a.In the seal chamber 100a The lubricant mediums such as lubricating oil or lubricating grease can be filled, to reduce the friction between inner ring 10, outer ring 20 and rolling element 30.
The first annular sealing cover 40, the second annular sealing cover 50 can prevent the impurity such as extraneous steam, dust from entering In seal chamber 100a, damage rolling bearing 100 is avoided, the service life of rolling bearing 100 is reduced；It can also prevent seal chamber The lubricant mediums such as lubricating oil or lubricating grease in 100a flow out to the external world, ensure that rolling bearing 100 can be operated efficiently always.
Wherein, the first annular sealing cover 40, the effect of the second annular sealing cover 50 are identical, and installation position is symmetrical.With It is specifically specifically described by taking the first annular sealing cover 40 as an example down, the concrete structure of second annular sealing cover 50 can With with reference to the first annular sealing cover 40.
In addition, the present embodiment uses the axis of first annular sealing cover 40 and the second annular sealing cover 50 to rolling bearing 100 It is sealed respectively to both ends.If only needing to be sealed wherein one end of the rolling bearing 100, it can also only be arranged The second annular sealing cover 50 is only arranged in one annular sealing cover 40.
With reference to Fig. 3, Fig. 5, the first annular sealing cover 40 includes sealing cover ontology 40a, towards the diameter of the inner ring 10 Radial outer end 40c to inner end 40b and towards the outer ring 20.Wherein, the first annular sealing cover 40 is by polymer rubber Material is made, and sealing cover ontology 40a is internally provided with metalwork 41d to support first annular sealing cover 40, to make it have admittedly Fixed shape.
In the present embodiment, the outer ring 20 has the annular slot 21 being correspondingly arranged with the radial outer end 40c, the diameter 40c fixing cards are set to the card slot 21 outward, and are formed and sealed with the card slot 21.When the inner ring 10, outer ring 20 are opposite When rotation, the first annular sealing cover 40 keeps being relatively fixed with the outer ring 20, with 10 relative rotation of the inner ring.Specifically , by high polymer rubber material at radial outer end 40c be compressed in the annular slot 21 and deform so that diameter 40c can be completely bonded with the inner surface of card slot 21 outward, realize sealing.
Since first annular sealing cover 40 is fixedly installed on the outer ring 20, between the radial outer end 40c and card slot 21 Preferable sealing can be formed, is not easy that introduced contaminants is made to enter seal chamber 100a, is not easy to make the lubrication in seal chamber 100a to be situated between Matter flows out to the external world.
But be relative rotation between the radial inner end 40b and the inner ring 10, introduced contaminants are more easily by diameter Enter seal chamber 100a to the gap between inner end 40b inner rings 10, lubricant medium is also easier to through radial inner end 40b inner rings 10 Between gap flow out to the external world.
In the present embodiment, the radial inner end 40b has annular seal lip, occurs relatively in the inner ring 10, outer ring 20 When rotation, the annular seal lip and 10 relative rotation of the inner ring, and form movable sealing.Specifically, the ring packing Lip includes the first annular sealing lip 41 that in axial direction x is sequentially distributed and the second annular seal lip 42.
With reference to Fig. 2, the rolling bearing 100 further includes the first baffle ring 60 and the second baffle ring 70.Wherein, first baffle ring 60 are correspondingly arranged with the first annular sealing cover 40, are fixedly installed on first annular sealing cover 40 backwards to the one of rolling element 30 Side.Second baffle ring 70 is correspondingly arranged with second annular sealing cover 50, is fixedly installed on the second annular sealing cover 50 back of the body To the side of rolling element 30.First baffle ring 60, the effect of the second baffle ring 70 are identical, and installation position is symmetrical.
It is specifically described by taking first baffle ring 60 as an example in detail below, the concrete structure of second baffle ring 70 can be with With reference to first baffle ring 60.
With reference to Fig. 3 and Fig. 6, first baffle ring 60 is fixedly installed on the inner ring 10, and is formed with the inner ring 10 close Envelope.41 and second annular seal lip 42 of the first annular sealing lip contacts sealing with first baffle ring 60 respectively, to realize The movable sealing of the first annular sealing cover 40 and inner ring 10.
Since first annular sealing cover 40 is contacted at, the first annular sealing lip 41 at it by high polymer rubber material Sealing station deforms and is extruded, and second annular seal lip 42 deforms and is squeezed in its contact sealing station Pressure.The squeezing action power of sealing station is not easy that sealing station is made gap occur, to have preferable sealing function.Also, institute Stating the first baffle ring 60 can stop that extraneous steam, dust etc. are in direct contact the first annular sealing lip to a certain extent 41, the second annular seal lip 42 prevents first annular sealing lip 41, the second annular seal lip 42 from being damaged to a certain extent It is bad.
In addition, during the relative rotation of inner ring 10, outer ring 20, first annular sealing lip 41, the second annular seal lip 42 sealing surfaces that will necessarily be in contact with it generate friction.Annular seal lip is damaged because of friction in order to prevent, needs to make described close Cover has higher precision, such as needs that the sealing surface is made to have preferable surface roughness.Compared to directly in inner ring The sealing surface is processed on 10, and by the way that the first baffle ring 60 is arranged, tool can be comparatively readily processed on the first baffle ring 60 The sealing surface for having degree of precision makes the sealing surface be matched with first annular sealing lip 41, the second annular seal lip 42, so as to It is enough to prevent first annular sealing lip 41, the second annular seal lip 42 from being damaged because of friction to a certain extent, it is promoted first annular The service life of sealing lip 41, the second annular seal lip 42.
In the present embodiment, by the way that two annular seal lips are arranged, dual-seal can be played the role of, more effectively prevented Impurity is flowed out into seal chamber 100b or lubricant medium by first annular sealing cover 40 outer by first annular sealing cover 40 Boundary.It should be appreciated that in other variations, can also only be arranged an annular seal lip contacted with first baffle ring 60 it is close Envelope, does not influence the implementation of the technical program.
With reference to Fig. 3, Fig. 4, annular seal space is surrounded between the first annular sealing lip 41, the second annular seal lip 42 Lubricant medium is filled in 41a, the annular seal space 41a.Wherein, the lubricant medium is lubricating grease 41b, lubricating grease 41b Full of entire annular seal space 41a.
Lubricating grease 41b is usually the grease-like semisolid of stiff, as the full entire annular seal space 41a of lubricating grease 41b fillings Afterwards, lubricating grease 41b annular in shape is equivalent to sealing ring, can further completely cut off seal chamber 100a and the external world, play the work of sealing With.
Meanwhile when the first annular sealing lip 41, the second annular seal lip 42 and the first 60 relative rotation of baffle ring, profit Consistent lubricant 41b can also be lubricated and cool down to first annular sealing lip 41, the second annular seal lip 42, to reduce ring packing It rubs between lip and the first baffle ring 60, avoids annular seal lip quick aging due to temperature is too high, influence sealing effect.
In other variations, the lubricant medium can also be lubricating oil, can equally play sealing, lubrication and cooling Effect, do not influence the implementation of the technical program.
In addition it is also possible to which sealing ring is arranged in the annular seal space 41a, sealing ring is made to fit in the first baffle ring 60 Sealing is formed between peripheral surface, with the first baffle ring 60, by the way that sealing ring is arranged, can further completely cut off seal chamber 100a and outer Better seal is played the role of on boundary.
It should be noted that the lubricant medium in the seal chamber 100a and the lubricant medium in annular seal space 41a Identical lubriation material may be used, different lubriation materials can also be used.
Specifically in the present embodiment, the lubricant medium in lubricant medium, annular seal space 41a in the seal chamber 100a It is all made of lubricating grease.
As shown in figure 3, first baffle ring 60 includes the first part 61 and radially y prolongs that axial direction x extends The second part 62 stretched, the first part 61 are fixedly installed on the periphery wall of inner ring 10, are formed and are sealed with inner ring 10, to keep away Exempt from introduced contaminants to enter between first part 61 and inner ring 10 in seal chamber 100a.The second part 62 is towards outer ring 20 Extend, is suitable for protecting first annular sealing lip 41, the second annular seal lip 42, prevents the impurity such as extraneous steam, dust from directly connecing It touches annular seal lip and damages annular seal lip.
Wherein, the first annular sealing lip 41 extends towards second part 62, and sealing is contacted with the formation of second part 62, For stopping the circulation of introduced contaminants or internal lubrication medium on radial direction y.Second annular seal lip 42 is towards A part 61 extends, and is formed with first part 61 and contacts sealing, for stopping introduced contaminants or internal lubrication medium in axial side Circulation on x.
That is, introduced contaminants enter the process of seal chamber 100a, need to keep introduced contaminants first radially y logical First annular sealing lip 41 is crossed, then by the lubricating grease 41b in annular seal space 41a, finally in axial direction x passes through second Annular seal lip 42, into seal chamber 100a.Procedure described above avoid the direct circulations on impurity in the axial direction x, make the external world The process that impurity enters seal chamber 100a becomes increasingly complex, to make first annular sealing cover 40 be imitated with better seal Fruit.
Likewise, the lubricant medium in seal chamber 100a flows out to extraneous process, need to make lubricant medium first along axis To direction x by the second annular seal lip 42, annular seal space 41a is then flowed through, finally radially direction y passes through first annular Sealing lip 41, flows out to the external world.Direct circulation of the lubricant medium in the axial direction on x is equally avoided, lubricant medium is made to flow out Become increasingly complex to extraneous process, makes first annular sealing cover 40 that there is better seal effect.
In the present embodiment, the radial inner end 40b also has third annular seal lip 43, the first annular sealing lip 41, in axial direction x is set gradually for the second annular seal lip 42 and third annular seal lip 43.Wherein, the third annular is close It is formed between envelope lip 43 and the inner ring 10 between non-contact seals, that is, third annular seal lip 43 and inner ring 10 with micro- Small gap can prevent the lubricant medium of seal chamber 100b from flowing to the second annular seal lip 42.
The third annular seal lip 43 forms non-contact seals, thus in inner ring 10, the process of 20 relative rotation of outer ring In, third annular seal lip 43 will not be in contact friction with inner ring 10, generate heat, to be hardly damaged third sealing lip 43, make third sealing lip 43 that there is longer service life.
It should be noted that the radial inner end 40b of first annular sealing cover has there are three annular seal lip in the present embodiment, Two of which annular seal lip contacts sealing with the formation of the first baffle ring 60, and an annular seal lip forms non-contact close with inner ring 10 Envelope.In other variations, more annular seal lips can also be set, and the quantity of the annular seal lip is more, then seals Effect is better.
Specifically, three or more annular seal lips can be arranged contacts sealing with the formation of the first baffle ring 60.At this point it is possible to Two annular seal lips are made to extend to form contact sealing towards first part 61；Alternatively, making two annular seal lips along second part 62 extend to form contact sealing.Further, it is also possible to which annular seal lip is arranged, make itself and first part 61 or the formation of second part 62 Non-contact seals.Alternatively, setting annular seal lip, makes it contact sealing with the formation of inner ring 10.
In addition, the radial outer end 40c of the first annular sealing cover of the present embodiment is fixedly installed on the outer ring 20, first gear Circle 60 is fixedly installed on inner ring 10, and radial inner end 40b contacts sealing with the first baffle ring 60.In other variations, it can also make The radial inner end 40b is fixedly installed on inner ring 10, and the first baffle ring 60 is made to be fixedly installed on outer ring 20, radial outer end 40c and The contact sealing of one baffle ring 60.At this point, the design form of radial outer end 40c is referred to setting for radial inner end 40b in the present embodiment Mode is set, is repeated no more.
With continued reference to Fig. 3, the second part 62 extends close to the internal perisporium of the outer ring 20 from the inner ring 10. That is in axial direction x, the projection of second part 62 can largely cover the first annular sealing cover 40, avoid by Outside the first annular sealing cover 40 is directly exposed to, the impurity such as extraneous steam, dust are reduced to a certain extent and are directly connect First annular sealing cover 40 is touched, to play better seal effect.
With reference to Fig. 2, second baffle ring 70 includes first part 71 and second part 72.Wherein, the first part 71 It is referred to the first baffle ring 60 with the set-up mode of second part 72, is repeated no more.But second part 72 in the second baffle ring Extended distance has only covered the radial inner end of second annular sealing cover 50, and does not extend to the inner circumferential close to the outer ring 20 Wall.The reason is that the side of the rolling bearing 100 where the second baffle ring 70 needs that there is larger space to install other zero Part；Alternatively, the air of this side is more clean, it is not necessary that stopped.
In other variations, first baffle ring 60 can be respectively provided at the axial both ends of rolling bearing 100 or be all provided with Second baffle ring 70 is set, does not influence the implementation of the technical program.
Although present disclosure is as above, present invention is not limited to this.Any those skilled in the art are not departing from this It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute Subject to the range of restriction.

Claims (10)

1. a kind of rolling bearing, including：
The inner ring and outer ring being arranged concentrically；
Several rolling elements are arranged between the inner ring, outer ring, and opposite rotation is realized in the inner ring, outer ring by the rolling element Turn；
It is arranged at the annular sealing cover of axial one end of the rolling bearing, the annular sealing cover has towards outer ring Radial outer end and radial inner end towards inner ring；
One of the radial outer end, radial inner end are fixedly connected with the corresponding outer ring or inner ring, and form sealing；Separately One there is at least one annular seal lip, the annular seal lip to be suitable for forming activity with the corresponding outer ring or inner ring close Envelope；
It is characterized in that, the rolling bearing further includes：
The baffle ring backwards to the rolling element side, the baffle ring in the annular sealing cover is arranged to be fixedly installed on and the annular The corresponding inner ring of sealing lip or outer ring, and form sealing；
Wherein, at least one annular seal lip contacts sealing with the baffle ring.
2. rolling bearing as described in claim 1, which is characterized in that the baffle ring includes axially extending first part and diameter To the second part of extension, the first part is fixedly installed on the periphery wall of the inner ring, and the second part is towards described outer Circle extends；Or, the first part is fixedly installed on the internal perisporium of the outer ring, the second part extends towards the inner ring.
3. rolling bearing as claimed in claim 2, which is characterized in that at least one annular seal lip and described first Tap touches sealing；And/or at least one annular seal lip contacts sealing with the second part.
4. rolling bearing as claimed in claim 2, which is characterized in that at least one annular seal lip and described first Divide non-contact seals；And/or at least one annular seal lip and the second part non-contact seals.
5. rolling bearing as claimed in claim 2, which is characterized in that the second part extends close to institute from the inner ring State outer ring；Or, the second part extends close to the inner ring from the outer ring.
6. rolling bearing as claimed in claim 2, which is characterized in that at least two annular seal lips contact close with the baffle ring Envelope, forms the two neighboring annular seal lip of contact sealing and baffle ring surrounds annular seal space, the ring packing intracavitary filling Lubricant medium or the ring packing intracavitary are equipped with sealing ring.
7. rolling bearing as claimed in claim 6, which is characterized in that one of in the two neighboring annular seal lip Sealing is contacted with the first part, another contacts sealing with the second part.
8. rolling bearing as described in claim 1, which is characterized in that at least one annular seal lip with it is corresponding described Outer ring or inner ring contact sealing；And/or at least one annular seal lip and the corresponding outer ring or inner ring it is non-contact close Envelope.
9. such as claim 1-8 any one of them rolling bearings, which is characterized in that the annular sealing cover includes setting respectively Set the first annular sealing cover and the second annular sealing cover at rolling bearing axial direction both ends, the first annular sealing cover, Second annular sealing cover, inner ring and outer ring surround seal chamber.
10. rolling bearing as claimed in claim 9, which is characterized in that the baffle ring includes being separately positioned on the axis of rolling Hold first baffle ring and the second baffle ring at axial both ends.
CN201810210241.7A 2018-03-14 2018-03-14 Rolling bearing Pending CN108488239A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810210241.7A CN108488239A (en) 2018-03-14 2018-03-14 Rolling bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810210241.7A CN108488239A (en) 2018-03-14 2018-03-14 Rolling bearing

Publications (1)

Publication Number Publication Date
CN108488239A true CN108488239A (en) 2018-09-04

Family

ID=63339018

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810210241.7A Pending CN108488239A (en) 2018-03-14 2018-03-14 Rolling bearing

Country Status (1)

Country Link
CN (1) CN108488239A (en)

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Application publication date: 20180904