CN111894991A - Conductive seal ring and bearing assembly - Google Patents
Conductive seal ring and bearing assembly Download PDFInfo
- Publication number
- CN111894991A CN111894991A CN202010747658.4A CN202010747658A CN111894991A CN 111894991 A CN111894991 A CN 111894991A CN 202010747658 A CN202010747658 A CN 202010747658A CN 111894991 A CN111894991 A CN 111894991A
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- Prior art keywords
- conductive
- bearing
- ring
- contact
- fixedly connected
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- 238000005096 rolling process Methods 0.000 claims abstract description 10
- 239000000835 fiber Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 8
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 7
- 239000004917 carbon fiber Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 4
- 230000003068 static effect Effects 0.000 abstract description 24
- 239000004519 grease Substances 0.000 abstract description 10
- 230000002035 prolonged effect Effects 0.000 abstract description 8
- 230000001050 lubricating effect Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- 230000015556 catabolic process Effects 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 abstract description 5
- 239000010687 lubricating oil Substances 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 description 37
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
Images
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
- F16C33/72—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
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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
- F16C33/72—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
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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
- F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
- F16C41/002—Conductive elements, e.g. to prevent static electricity
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/021—Sealings between relatively-stationary surfaces with elastic packing
- F16J15/022—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Embodiments of the present invention provide a conductive seal ring and a bearing assembly, the conductive seal ring including a conductive portion having a first end adapted to contact the bearing inner race or the support shaft, the second end of the conductive part is suitable for contacting with the bearing outer ring or the bearing seat, the bearing outer ring is fixed with the bearing seat, the bearing inner ring is fixed with the supporting shaft, when the bearing assembly works, the bearing outer ring and the bearing inner ring can be electrically conducted, the generated static charges can be timely released, the static charges are prevented from being accumulated between the bearing outer ring and the bearing inner ring, and the static charges are discharged after breakdown voltage is generated to generate current, thereby avoiding the burning of the lubricating oil or lubricating grease film between the outer ring or the inner ring of the bearing and the rolling body due to the current, thereby, the service life of the bearing can be prolonged, and other electric devices can be prevented from being out of order due to the influence of the current in the discharging process.
Description
Technical Field
The embodiment of the invention relates to the field of bearings, in particular to a conductive sealing ring and a bearing assembly.
Background
When the bearing is applied to an electric machine such as a railway vehicle motor, a power transmission motor or a wind power generator, static charges are generated. Because the existing bearing can not eliminate static charges, the static charges are accumulated, and when the accumulated static charges are more, the voltage difference between the accumulated static charges and other structures reaches a certain degree, the structures can discharge to generate current. Since the film of the lubricant or grease between the outer ring or inner ring of the bearing and the rolling elements is very thin, the lubricant or grease is easily ignited during the discharge process, and other electrical components are caused to malfunction, which greatly affects the quality of the bearing and reduces the service life of the bearing.
Therefore, how to prevent the static charge from accumulating on the bearing becomes a technical problem which needs to be solved urgently by those skilled in the art.
Disclosure of Invention
The technical problem solved by the embodiment of the invention is how to prevent the accumulation of static charges on the bearing.
In order to solve the above problem, an embodiment of the present invention provides a conductive sealing ring, which is adapted to be fixedly connected to one of a bearing outer ring, a bearing inner ring, a bearing seat fixedly connected to the bearing outer ring, or a support shaft fixedly connected to the bearing inner ring, and includes:
a conductive portion having a first end adapted to contact the bearing inner race or the support shaft and a second end adapted to contact the bearing outer race or the bearing housing.
Optionally, the conductive part includes:
the conductive fixing part is suitable for being in fixed contact with the bearing inner ring or the supporting shaft;
and the conductive elastic contact part is fixedly connected with the conductive fixing part and is suitable for being in butt contact with the bearing outer ring or the bearing seat.
Optionally, the conductive part includes:
the conductive fixing part is suitable for being in fixed contact with the bearing outer ring or the bearing seat;
and the conductive elastic contact part is fixedly connected with the conductive fixing part and is suitable for being in abutting contact with the bearing inner ring or the support shaft.
Optionally, the conductive elastic contact portion includes a contact portion fixing section and a contact portion contact section that are fixedly connected to each other, the contact portion fixing section is fixed to the conductive fixing portion, the contact portion contact section is in abutting contact with the bearing inner ring or the support shaft, and the contact portion contact section is in a conical shape.
Optionally, the conductive elastic contact portion includes a plurality of conductive fibers, and each of the conductive fibers is distributed along a circumferential direction of the conductive sealing ring.
Optionally, the conductive fiber is made of conductive carbon fiber.
Optionally, the conductive fixing portion includes a fixing portion fixing section and a fixing portion connecting section that are fixedly connected to each other, and the conductive sealing ring further includes:
the auxiliary fixing part is fixedly sleeved on one side of the conductive fixing part close to the second end in the radial direction and comprises an auxiliary fixing section and an auxiliary connecting section which are fixedly connected with each other, and the auxiliary fixing section is fixedly connected with the fixing part fixing section;
the conductive elastic contact part is clamped between the fixing part connecting section and the auxiliary connecting section and is fixedly connected with the auxiliary fixing part.
Optionally, the conductive seal ring further includes:
the seal lip, the seal lip is the annular, the seal lip with supplementary fixed part fixed connection, will after the installation of conductive seal ring is accomplished on the vertical section of conductive seal ring, the seal lip is located one side that is closer to the rolling element of conductive elastic contact portion.
Embodiments of the present invention also provide a bearing assembly, including:
the bearing comprises a bearing outer ring and a radial inner bearing inner ring sleeved on the bearing outer ring
The support shaft is fixedly connected with the bearing inner ring;
the bearing seat is fixedly connected with the bearing outer ring;
the conductive sealing ring is fixedly connected with one of a bearing outer ring, a bearing inner ring, a bearing seat fixedly connected with the bearing outer ring or a support shaft fixedly connected with the bearing inner ring, a first end of a conductive part of the conductive sealing ring is contacted with the bearing inner ring or the support shaft, and a second end of the conductive part is contacted with the bearing outer ring or the bearing seat.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following advantages:
the conductive sealing ring provided by the embodiment of the invention is suitable for being fixedly connected with one of a bearing outer ring, a bearing inner ring, a bearing seat fixedly connected with the bearing outer ring or a support shaft fixedly connected with the bearing inner ring, and comprises: a conductive portion having a first end adapted to contact the bearing inner race or the support shaft and a second end adapted to contact the bearing outer race or the bearing housing. Since the first end of the conductive part included in the conductive sealing ring provided by the embodiment of the present invention is adapted to be in contact with the bearing inner ring or the support shaft, the second end of the conductive part is suitable for contacting with the bearing outer ring or the bearing seat, the bearing outer ring is fixed with the bearing seat, the bearing inner ring is fixed with the supporting shaft, when the bearing assembly works, the bearing outer ring and the bearing inner ring can be electrically conducted, the generated static charges can be timely released, the static charges are prevented from being accumulated between the bearing outer ring and the bearing inner ring, and the static charges are discharged after breakdown voltage is generated to generate current, thereby avoiding the burning of the lubricating oil or lubricating grease film between the outer ring or the inner ring of the bearing and the rolling body due to the current, thereby, the service life of the bearing can be prolonged, and other electric devices can be prevented from being out of order due to the influence of the current in the discharging process.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic cross-sectional view of a conductive seal ring and a structure of a connection or contact thereof according to an embodiment of the present invention;
fig. 2 is a partial perspective view of a conductive seal ring according to an embodiment of the present invention.
Legend: 1. a conductive fixing part; 11. a fixed part fixing section; 12. a fixed part connecting section; 2. a conductive elastic contact portion; 21. a contact portion fixing section; 22. a contact portion contact section; 3. an auxiliary fixing part; 31. an auxiliary fixing section; 32. an auxiliary connection section; 4. sealing lip
Detailed Description
As is clear from the background art, static charge tends to accumulate in conventional bearings.
In order to prevent the accumulation of static charge on the bearing, the embodiment of the invention provides an electrically conductive sealing ring, which is suitable for being fixedly connected with one of a bearing outer ring, a bearing inner ring, a bearing seat fixedly connected with the bearing outer ring or a support shaft fixedly connected with the bearing inner ring, and comprises: a conductive portion having a first end adapted to contact the bearing inner race or the support shaft and a second end adapted to contact the bearing outer race or the bearing housing.
Since the first end of the conductive part included in the conductive sealing ring provided by the embodiment of the present invention is adapted to be in contact with the bearing inner ring or the support shaft, the second end of the conductive part is suitable for contacting with the bearing outer ring or the bearing seat, the bearing outer ring is fixed with the bearing seat, the bearing inner ring is fixed with the supporting shaft, when the bearing assembly works, the bearing outer ring and the bearing inner ring can be electrically conducted, the generated static charges can be timely released, the static charges are prevented from being accumulated between the bearing outer ring and the bearing inner ring, and the static charges are discharged after breakdown voltage is generated to generate current, thereby avoiding the burning of the lubricating oil or lubricating grease film between the outer ring or the inner ring of the bearing and the rolling body due to the current, thereby, the service life of the bearing can be prolonged, and other electric devices can be prevented from being out of order due to the influence of the current in the discharging process.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a cross-sectional view of a conductive seal ring and a connection or contact structure thereof according to an embodiment of the present invention, and fig. 2 is a partial perspective view of the conductive seal ring according to the embodiment of the present invention.
The embodiment of the invention provides a conductive sealing ring which is suitable for being fixedly connected with one of a bearing outer ring, a bearing inner ring, a bearing seat fixedly connected with the bearing outer ring or a support shaft fixedly connected with the bearing inner ring, and comprises: a conductive portion having a first end adapted to contact the bearing inner race or the support shaft and a second end adapted to contact the bearing outer race or the bearing housing.
The conductive part may be fixed and in contact with the bearing inner ring, the support shaft, the bearing outer ring or the bearing seat, or may be only in contact with the bearing inner ring, the support shaft, the bearing outer ring or the bearing seat, but only one end of the first end and the second end may be fixed and in contact with other structures. When the first end and the second end are only in contact with other structures, the other structures of the conductive sealing ring can fix the conductive sealing ring at the position where the conductive sealing ring is located and fix the conductive sealing ring at other structures.
In addition, it is easily understood that when the first end of the conductive portion is adapted to contact the support shaft or the second end of the conductive portion is adapted to contact the bearing seat, the support shaft and the bearing seat are also conductive materials, and conduction of the conductive circuit is achieved.
Since the first end of the conductive part included in the conductive sealing ring provided by the embodiment of the present invention is adapted to be in contact with the bearing inner ring or the support shaft, the second end of the conductive part is suitable for contacting with the bearing outer ring or the bearing seat, the bearing outer ring is fixed with the bearing seat, the bearing inner ring is fixed with the supporting shaft, when the bearing assembly works, the bearing outer ring and the bearing inner ring can be electrically conducted, the generated static charges can be timely released, the static charges are prevented from being accumulated between the bearing outer ring and the bearing inner ring, and the static charges are discharged after breakdown voltage is generated to generate current, thereby avoiding the burning of the lubricating oil or lubricating grease film between the outer ring or the inner ring of the bearing and the rolling body due to the current, thereby, the service life of the bearing can be prolonged, and other electric devices can be prevented from being out of order due to the influence of the current in the discharging process.
Therefore, in one embodiment, the conductive portion comprises:
the conductive fixing part 1 is suitable for being in fixed contact with the bearing inner ring or the supporting shaft;
and the conductive elastic contact part 2 is fixedly connected with the conductive fixing part 1 and is suitable for being in butt contact with the bearing outer ring or the bearing seat.
It is understood that the conductive fixing portion 1 may be made of a hard material, so as to improve the fixing effect of the conductive sealing ring to other structures. The conductive elastic contact part 2 can be made of soft materials, so that the wear resistance of a part, which is in contact with other structures and rotates relatively, of the conductive sealing ring is improved.
The conductive fixing part 1 is annular as a whole, and may be linear or formed by multiple straight lines on the cross section of the conductive sealing ring, or may be curved. When the conductive fixing part 1 is composed of a plurality of straight lines on the cross section of the conductive sealing ring, one end of the conductive fixing part is fixedly connected with one of a bearing outer ring, a bearing inner ring, a bearing seat fixedly connected with the bearing outer ring or a support shaft fixedly connected with the bearing inner ring, and the other end of the conductive fixing part is fixedly connected with the conductive elastic contact part 2.
Of course, the shape of the conductive elastic contact portion 2 may be set as desired. In order to improve the conduction performance of the conductive elastic contact portion 2, in a specific embodiment, the conductive elastic contact portion 2 includes a contact portion fixing section 21 and a contact portion contact section 22 fixedly connected to each other, the contact portion fixing section 21 is fixed to the conductive fixing portion 1, the contact portion contact section 22 is in abutting contact with the bearing inner ring or the support shaft, and the contact portion contact section 22 is in a tapered shape. Because the contact section of the conductive elastic contact part 2 is in a conical structure, the contact angle between the conductive elastic contact part 2 and other structures is not a right angle, so that the contact area can be increased, and the contact performance is improved; and because after the installation of conductive seal ring is accomplished, certain deformation can take place for conductive elastic contact portion 2, after conductive seal ring operation period, certain grinding can take place for conductive elastic contact portion 2, because the contact angle is not the right angle, conductive elastic contact portion 2 can compensate some grinding, continues to compress tightly other structures that contact to can improve conductive seal ring's life.
Of course, the structure of the conductive elastic contact part 2 may be set as desired. In order to facilitate the arrangement of the conductive elastic contact portion 2, as shown in the figure, in a specific embodiment, the conductive elastic contact portion 2 includes a plurality of conductive fibers, and each of the conductive fibers is distributed along the circumferential direction of the conductive sealing ring.
The plurality of conductive fibers are distributed along the circumferential direction of the conductive sealing ring, so that the structure in which the first ends are contacted and the structure in which the second ends are contacted can be ensured to be communicated with each other no matter the conductive sealing ring rotates to any position, and the material of part of the conductive elastic contact part 2 can be saved.
There are, of course, many ways in which each of the conductive fibers may be distributed, and in one embodiment, each of the conductive fibers may be uniformly distributed along the circumference of the conductive sealing ring.
Because each conductive fiber is uniformly distributed along the circumferential direction of the conductive sealing ring, the center of gravity of the conductive elastic contact part 2 can be located on the axis of the conductive sealing ring, so that the conductive elastic contact part 2 is not easy to eccentrically rotate, and the service life of the conductive sealing ring can be prolonged.
The material of the conductive fiber can be selected according to the requirement, and in a specific embodiment, the material of the conductive fiber is conductive carbon fiber.
When the conductive fibers are conductive carbon fibers, the axial strength and the modulus of the conductive carbon fibers are high, so that the conductivity of the conductive elastic contact part 2 can be ensured, and the wear resistance of the conductive fibers can be improved. The conductive carbon fiber does not creep, so that the service life of the conductive fiber can be greatly prolonged. The density of the conductive carbon fiber is low, the quality of the conductive sealing ring can be reduced, the conductive sealing ring is corrosion resistant, and the service life of the conductive sealing ring can be prolonged.
In order to fix the conductive elastic contact portion 2 better, a structure for improving the fixing effect may be added, so, in an embodiment, the conductive fixing portion 1 includes a fixing portion fixing section 11 and a fixing portion connecting section 12 fixedly connected to each other, and the conductive sealing ring further includes: the auxiliary fixing part 3 is fixedly sleeved on one side of the conductive fixing part 1 close to the second end in the radial direction and comprises an auxiliary fixing section 31 and an auxiliary connecting section 32 which are fixedly connected with each other, and the auxiliary fixing section 31 is fixedly connected with the fixing part fixing section 11; the conductive elastic contact portion 2 is sandwiched between the fixing portion connecting section 12 and the auxiliary connecting section 32, and is fixedly connected to the auxiliary fixing portion 3.
The auxiliary fixing segment 31 and the conductive fixing portion 1 may be made of the same material or different materials. The auxiliary fixing section 31 does not need to be the same as the conductive fixing portion 1, and has a conductive property.
Due to the addition of the auxiliary fixing part 3, the conductive elastic contact part 2 can be clamped by the conductive fixing part 1 and the auxiliary fixing part 3, so that the conductive elastic contact part 2 can be better fixed. In order to improve the fixing effect of the auxiliary fixing portion 3, the auxiliary fixing portion 3 may also be made of a hard material, so as to better clamp and fix the conductive elastic contact portion 2.
In order to seal the lubricating grease in the bearing raceway, the conductive seal ring further includes: seal lip 4, seal lip 4 is the annular, seal lip 4 with supplementary fixed part 3 fixed connection, will after the installation of conductive seal ring is accomplished on the longitudinal section of conductive seal ring, seal lip 4 is located one side that is closer to the rolling element of conductive elastic contact portion 2.
The sealing lip 4 not only retains the grease inside the bearing, but also prevents contaminants from penetrating the bearing. Because the seal lip 4 is located on the side of the conductive elastic contact portion 2 closer to the rolling element, the seal lip 4 can prevent the lubricating grease from impregnating and corroding the conductive elastic contact portion 2, thereby ensuring that the conductive elastic contact portion 2 can better maintain the performance thereof.
Embodiments of the present invention also provide a bearing assembly, including:
the bearing comprises a bearing outer ring and a radial inner bearing inner ring sleeved on the bearing outer ring
The support shaft is fixedly connected with the bearing inner ring;
the bearing seat is fixedly connected with the bearing outer ring;
the conductive sealing ring is fixedly connected with one of a bearing outer ring, a bearing inner ring, a bearing seat fixedly connected with the bearing outer ring or a support shaft fixedly connected with the bearing inner ring, a first end of a conductive part of the conductive sealing ring is contacted with the bearing inner ring or the support shaft, and a second end of the conductive part is contacted with the bearing outer ring or the bearing seat.
The bearing assembly provided by the embodiment of the invention comprises the conductive sealing ring fixedly connected with one of the bearing outer ring, the bearing inner ring, the bearing seat fixedly connected with the bearing outer ring or the support shaft fixedly connected with the bearing inner ring, the first end of the conductive part of the conductive sealing ring is suitable for being in contact with the bearing inner ring or the support shaft, the second end of the conductive part is suitable for being in contact with the bearing outer ring or the bearing seat, the bearing outer ring is fixed with the bearing seat, the bearing inner ring is fixed with the support shaft, when the bearing assembly works, the bearing outer ring and the bearing inner ring can be electrically conducted, the generated static charges can be timely released, the static charges are prevented from being accumulated between the bearing outer ring and the bearing inner ring, a large amount of static charges are discharged after breakdown voltage is generated, current is generated, and further, the lubricating oil or lubricating grease film between the bearing outer ring or the bearing inner ring and the rolling body Burning, so that the service life of the bearing can be prolonged, and other electric devices can be prevented from being out of order due to the influence of the current in the discharging process.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the embodiments of the present invention are disclosed above, the embodiments of the present invention are not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present embodiments, and it is intended that the scope of the present embodiments be defined by the appended claims.
Claims (9)
1. A conductive seal ring adapted to be fixedly connected to one of a bearing outer race, a bearing inner race, a bearing housing fixedly connected to the bearing outer race, or a support shaft fixedly connected to the bearing inner race, comprising:
a conductive portion having a first end adapted to contact the bearing inner race or the support shaft and a second end adapted to contact the bearing outer race or the bearing housing.
2. The conductive seal ring of claim 1, wherein the conductive portion comprises:
the conductive fixing part is suitable for being in fixed contact with the bearing inner ring or the supporting shaft;
and the conductive elastic contact part is fixedly connected with the conductive fixing part and is suitable for being in butt contact with the bearing outer ring or the bearing seat.
3. The conductive seal ring of claim 1, wherein the conductive portion comprises:
the conductive fixing part is suitable for being in fixed contact with the bearing outer ring or the bearing seat;
and the conductive elastic contact part is fixedly connected with the conductive fixing part and is suitable for being in abutting contact with the bearing inner ring or the support shaft.
4. The conductive seal ring of claim 2 or 3, wherein the conductive elastic contact portion includes a contact portion fixing section and a contact portion contact section fixedly connected to each other, the contact portion fixing section is fixed to the conductive fixing portion, the contact portion contact section is in abutting contact with the bearing inner ring or the support shaft, and the contact portion contact section is tapered in shape.
5. The conductive seal ring according to claim 2 or 3, wherein the conductive elastic contact portion comprises a plurality of conductive fibers, each of the conductive fibers being distributed along a circumferential direction of the conductive seal ring.
6. The conductive seal ring of claim 5, wherein the material of the conductive fibers is conductive carbon fibers.
7. The conductive seal ring according to claim 2 or 3, wherein the conductive fixing portion includes a fixing portion fixing section and a fixing portion connecting section fixedly connected to each other, the conductive seal ring further comprising:
the auxiliary fixing part is fixedly sleeved on one side of the conductive fixing part close to the second end in the radial direction and comprises an auxiliary fixing section and an auxiliary connecting section which are fixedly connected with each other, and the auxiliary fixing section is fixedly connected with the fixing part fixing section;
the conductive elastic contact part is clamped between the fixing part connecting section and the auxiliary connecting section and is fixedly connected with the auxiliary fixing part.
8. The conductive seal ring of claim 7, further comprising:
the seal lip, the seal lip is the annular, the seal lip with supplementary fixed part fixed connection, will after the installation of conductive seal ring is accomplished on the vertical section of conductive seal ring, the seal lip is located one side that is closer to the rolling element of conductive elastic contact portion.
9. A bearing assembly, comprising:
the bearing comprises a bearing outer ring and a bearing inner ring support shaft sleeved on the radial inner side of the bearing outer ring and fixedly connected with the bearing inner ring;
the bearing seat is fixedly connected with the bearing outer ring;
the conductive seal ring of any one of claims 1-8, fixedly connected to one of an outer bearing ring, an inner bearing ring, a bearing housing fixedly connected to the outer bearing ring, or a support shaft fixedly connected to the inner bearing ring, wherein a first end of a conductive portion of the conductive seal ring is in contact with the inner bearing ring or the support shaft, and a second end of the conductive portion is in contact with the outer bearing ring or the bearing housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010747658.4A CN111894991A (en) | 2020-07-30 | 2020-07-30 | Conductive seal ring and bearing assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010747658.4A CN111894991A (en) | 2020-07-30 | 2020-07-30 | Conductive seal ring and bearing assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111894991A true CN111894991A (en) | 2020-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010747658.4A Pending CN111894991A (en) | 2020-07-30 | 2020-07-30 | Conductive seal ring and bearing assembly |
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| Country | Link |
|---|---|
| CN (1) | CN111894991A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202871A (en) * | 2021-05-21 | 2021-08-03 | 舍弗勒技术股份两合公司 | Conductive oil guide assembly, bearing and bridge driving system |
| JP7437539B2 (en) | 2021-01-27 | 2024-02-22 | Nok株式会社 | sealing device |
-
2020
- 2020-07-30 CN CN202010747658.4A patent/CN111894991A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7437539B2 (en) | 2021-01-27 | 2024-02-22 | Nok株式会社 | sealing device |
| CN113202871A (en) * | 2021-05-21 | 2021-08-03 | 舍弗勒技术股份两合公司 | Conductive oil guide assembly, bearing and bridge driving system |
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Application publication date: 20201106 |