CN107939839B - Bearing with axial pretension compensation structure - Google Patents
Bearing with axial pretension compensation structure Download PDFInfo
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- CN107939839B CN107939839B CN201711406555.6A CN201711406555A CN107939839B CN 107939839 B CN107939839 B CN 107939839B CN 201711406555 A CN201711406555 A CN 201711406555A CN 107939839 B CN107939839 B CN 107939839B
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- bearing
- dustproof cover
- ring
- sealing
- outer ring
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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
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/581—Raceways; Race rings integral with other parts, e.g. with housings or machine elements such as shafts or gear wheels
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/042—Housings for rolling element bearings for rotary movement
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Sealing Of Bearings (AREA)
Abstract
The invention discloses a bearing with an axial pre-tightening compensation structure, which comprises a bearing inner ring, a bearing outer ring and a retainer arranged between the bearing inner ring and the bearing outer ring, wherein balls are placed on a ball pocket of the retainer, a first dust cover is arranged between the first side of the bearing outer ring and the first side of the bearing inner ring, and a second dust cover is arranged between the second sides; a second side sealing surface, a second dustproof cover clamping groove and a second dustproof cover embedding bulge are arranged on the second side of the bearing outer ring; the outer edge of the second dustproof cover is provided with a second side inner sealing surface, a second dustproof cover outer edge embedding bulge, a second dustproof cover outer edge embedding groove and a buffering part. According to the invention, the buffering part and the buffering pre-tightening boss are designed on the second side dust cover, so that the bearing has a pre-tightening compensation function after being assembled, and the assembling and using cost of a customer is reduced.
Description
Technical Field
The invention relates to the technical field of bearings, in particular to a bearing with an axial pre-tightening compensation structure.
Background
The bearing comprises a bearing outer ring, a bearing inner ring and a steel ball arranged between the bearing outer ring and the bearing inner ring, wherein the steel ball is kept by a retainer. For dust prevention and sealing, some bearings are also provided with dust covers between the bearing outer ring and the bearing inner ring, and the dust covers are positioned on two sides of the steel ball. However, after the existing bearing is installed, radial vibration is easy to generate, and pre-tightening and compensation cannot be carried out in the axial direction.
The applicant has therefore made an advantageous search and attempt to find a solution to the above-mentioned problems, which is the result of the following description.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a bearing with an axial pretension compensation structure, aiming at the above technical problems of the existing bearing.
The technical problem to be solved by the invention can be realized by the following technical scheme:
a bearing with an axial pre-tightening compensation structure comprises a bearing inner ring, a bearing outer ring and a retainer arranged between the bearing inner ring and the bearing outer ring, wherein balls are placed on a ball pocket of the retainer, a first dustproof cover is arranged between a first side of the bearing outer ring and a first side of the bearing inner ring, and a second dustproof cover is arranged between a second side of the bearing outer ring and a second side of the bearing inner ring; the outer peripheral surface of the bearing inner ring is a cylindrical surface; a second side sealing surface, a second dustproof cover clamping groove and a second dustproof cover embedding bulge are arranged on the second side of the bearing outer ring, wherein the second side sealing surface is mutually connected with the inner side groove surface of the second dustproof cover clamping groove, the inner side surface of the second dustproof cover embedding bulge is combined with the outer side groove surface of the second dustproof cover clamping groove into a whole, and the outer side surface of the second dustproof cover embedding bulge is combined with the second side surface of the bearing outer ring into a whole; the second dustproof cover comprises a framework and a rubber material coated on the framework, the rubber material forms a second dustproof cover body, a horseshoe-shaped sealing lip edge is arranged on the inner edge of the second dustproof cover body, and the horseshoe-shaped sealing lip edge is in sealing connection with the outer peripheral surface of the bearing inner ring; the outer edge of the second dustproof cover body is provided with a second side inner sealing surface, a second dustproof cover outer edge embedding bulge, a second dustproof cover outer edge embedding groove and a buffer part, the second side inner sealing surface and the inner side surface of the second dustproof cover outer edge embedding bulge are combined into a whole, the outer side surface of the second dustproof cover outer edge embedding bulge and the inner side groove surface of the second dustproof cover outer edge embedding groove are combined into a whole, and the outer side groove surface of the second dustproof cover outer edge embedding groove and the inner side surface of the buffer part are combined into a whole; during assembly, the second side sealing surface of the second side of the bearing outer ring is in sealing connection with the second side inner sealing surface on the second dustproof cover body, the second dustproof cover outer edge embedding protrusion of the second dustproof cover body outer edge is embedded into the second dustproof cover clamping groove of the second side of the bearing outer ring, the second dustproof cover embedding protrusion of the second side of the bearing outer ring is embedded into the second dustproof cover outer edge embedding groove of the second dustproof cover body outer edge, the buffering part is located on the outer side of the bearing outer ring, and a buffering and pre-tightening gap is reserved between the inner side surface of the buffering part and the second side surface of the bearing outer ring.
In a preferred embodiment of the present invention, a plurality of buffer pre-tightening bosses are uniformly distributed on the outer side surface of the buffer part.
In a preferred embodiment of the present invention, the buffering pretensioning boss is kidney-shaped.
In a preferred embodiment of the present invention, the first side of the bearing outer ring is provided with a first side sealing surface and a first side clamping surface which are perpendicular to each other; first shield adopts cold-rolled steel sheet one-time stamping forming, the inner edge of first shield is provided with the interior seal section that turns over to the ball direction, and the outer fringe of first shield is provided with an external seal section and a joint portion of mutually perpendicular, the interior seal section of first shield inner edge with form sealing connection between the outer peripheral face of bearing inner circle, the external seal section of first shield outer edge with the sealed face sealing connection of first side on the first side of bearing inner circle, joint portion on the first shield with first side joint face joint on the first side of bearing inner circle.
In a preferred embodiment of the present invention, two sealing ring grooves are axially spaced on the outer circumferential surface of the bearing outer ring, and an O-ring is disposed in each sealing ring groove.
In a preferred embodiment of the present invention, the cage is formed by press-molding a cold-rolled steel plate.
Due to the adoption of the technical scheme, the buffering part and the buffering pre-tightening boss are designed on the dustproof cover on one side, so that the bearing has a pre-tightening compensation function after being assembled, and the assembling and using cost of a customer is reduced. According to the invention, the O-shaped sealing ring is added on the bearing outer ring, so that the vibration noise of the bearing during assembly and use is reduced, and the radial vibration of the bearing is reduced and the sealing effect is achieved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a right side view of fig. 1.
Detailed Description
Referring to fig. 1 and 2, the bearing with the axial pretension compensation structure includes an inner bearing ring 100, an outer bearing ring 200, and a cage 300 disposed between the inner bearing ring 100 and the outer bearing ring 200, wherein balls 400 are placed on pockets of the cage 300.
A first dust cover 500 is installed between the first side of the bearing outer race 200 and the first side of the bearing inner race 100, and a second dust cover 600 is installed between the second side of the bearing outer race 200 and the second side of the bearing inner race 100.
The outer circumferential surface 110 of the bearing inner race 100 is a cylindrical surface. A second side sealing surface 210, a second dust cap clamping groove 220 and a second dust cap embedding protrusion 230 are arranged on the second side of the bearing outer ring 200, wherein the second side sealing surface 210 and the second dust cap clamping groove 220 are connected with each other, the inner side surface of the second dust cap embedding protrusion 230 and the outer side groove surface of the second dust cap clamping groove 220 are combined into one, and the outer side surface of the second dust cap embedding protrusion 230 and the second side surface 240 of the bearing outer ring 200 are combined into one.
The second dust cover 600 includes a framework 610 and a rubber material coated on the framework 610, the rubber material forms a second dust cover body 620, a horseshoe-shaped sealing lip 621 is arranged on an inner edge of the second dust cover body 620, and the horseshoe-shaped sealing lip 621 and the outer peripheral surface 110 of the bearing inner ring 100 form a sealing connection.
The outer fringe of second shield body 620 is provided with second side inner sealing face 622, the protruding 623 of second shield outer fringe embedding, second shield outer fringe embedding recess 624 and buffer 625, the protruding internal side surface of second side inner sealing face 622 and the protruding 623 of second shield outer fringe embedding unites two into one, the protruding external side surface of second shield outer fringe embedding 622 and the internal side groove face of second shield outer fringe embedding recess 624 unites two into one, the external side groove face of second shield outer fringe embedding recess 624 and the internal side surface 625a of buffer 625 unite two into one.
During assembly, the second side sealing surface 210 on the second side of the bearing outer ring 200 is in sealing connection with the second side inner sealing surface 622 on the second dust cap body 620, the second dust cap outer edge embedding protrusion 623 of the outer edge of the second dust cap body 620 is embedded into the second dust cap clamping groove 220 on the second side of the bearing outer ring 200, the second dust cap embedding protrusion 230 on the second side of the bearing outer ring 200 is embedded into the second dust cap outer edge embedding groove 624 of the outer edge of the second dust cap body 620, the buffer portion 625 is located on the outer side of the bearing outer ring 200, and a buffer and pre-tightening gap a is reserved between the inner side surface 625a of the buffer portion 625 and the second side surface 240 of the bearing outer ring 200.
A plurality of buffer pre-tightening bosses 625c are uniformly distributed on the outer side surface 625b of the buffer part 625, and the buffer pre-tightening bosses 625c are kidney-shaped.
A first side sealing surface 250 and a first side engagement surface 260 are provided on a first side of the bearing outer race 200, perpendicular to each other.
The first dust cover 500 is formed by cold-rolled steel plates in a one-step stamping mode, an inner sealing section 510 which is turned over towards the ball 400 is arranged on the inner edge of the first dust cover 500, an outer sealing section 520 and a clamping portion 530 which are perpendicular to each other are arranged on the outer edge of the first dust cover 500, the inner sealing section 510 on the inner edge of the first dust cover 500 is in sealing connection with the outer peripheral surface 110 of the bearing inner ring 100, the outer sealing section 520 on the outer edge of the first dust cover 500 is in sealing connection with a first side sealing surface 250 on a first side of the bearing outer ring 200, and the clamping portion 530 on the first dust cover 500 is clamped with a first side clamping surface 260 on the first side of the bearing outer.
Two sealing ring grooves 270 and 280 are axially arranged on the outer peripheral surface of the bearing outer ring 200 at intervals, and an O- shaped sealing ring 710 and 720 is arranged in each sealing ring groove 270 and 280.
The cage 300 is press-formed by a cold-rolled steel sheet.
Claims (4)
1. A bearing with an axial pre-tightening compensation structure comprises a bearing inner ring, a bearing outer ring and a retainer arranged between the bearing inner ring and the bearing outer ring, wherein balls are placed on a ball pocket of the retainer, a first dustproof cover is arranged between a first side of the bearing outer ring and a first side of the bearing inner ring, and a second dustproof cover is arranged between a second side of the bearing outer ring and a second side of the bearing inner ring; the bearing is characterized in that the outer peripheral surface of the bearing inner ring is a cylindrical surface; a second side sealing surface, a second dustproof cover clamping groove and a second dustproof cover embedding bulge are arranged on the second side of the bearing outer ring, wherein the second side sealing surface is mutually connected with the inner side groove surface of the second dustproof cover clamping groove, the inner side surface of the second dustproof cover embedding bulge is combined with the outer side groove surface of the second dustproof cover clamping groove into a whole, and the outer side surface of the second dustproof cover embedding bulge is combined with the second side surface of the bearing outer ring into a whole; the second dustproof cover comprises a framework and a rubber material coated on the framework, the rubber material forms a second dustproof cover body, a horseshoe-shaped sealing lip edge is arranged on the inner edge of the second dustproof cover body, and the horseshoe-shaped sealing lip edge is in sealing connection with the outer peripheral surface of the bearing inner ring; the outer edge of the second dustproof cover body is provided with a second side inner sealing surface, a second dustproof cover outer edge embedding bulge, a second dustproof cover outer edge embedding groove and a buffer part, the second side inner sealing surface and the inner side surface of the second dustproof cover outer edge embedding bulge are combined into a whole, the outer side surface of the second dustproof cover outer edge embedding bulge and the inner side groove surface of the second dustproof cover outer edge embedding groove are combined into a whole, and the outer side groove surface of the second dustproof cover outer edge embedding groove and the inner side surface of the buffer part are combined into a whole; during assembly, a second side sealing surface of a second side of the bearing outer ring is in sealing connection with a second side inner sealing surface on the second dustproof cover body, a second dustproof cover outer edge embedding bulge on the outer edge of the second dustproof cover body is embedded into a second dustproof cover clamping groove on the second side of the bearing outer ring, a second dustproof cover embedding bulge on the second side of the bearing outer ring is embedded into a second dustproof cover outer edge embedding groove on the outer edge of the second dustproof cover body, the buffer part is positioned on the outer side of the bearing outer ring, and a buffer and pre-tightening gap is reserved between the inner side surface of the buffer part and the second side surface of the bearing outer ring; a plurality of buffering pre-tightening bosses are uniformly distributed on the outer side surface of the buffering part;
the buffering pre-tightening boss is waist-shaped.
2. The bearing with the axial pretension compensating structure according to claim 1, wherein the first side of the bearing outer ring is provided with a first side sealing surface and a first side clamping surface which are perpendicular to each other; first shield adopts cold-rolled steel sheet one-time stamping forming, the inner edge of first shield is provided with the interior seal section that turns over to the ball direction, and the outer fringe of first shield is provided with an external seal section and a joint portion of mutually perpendicular, the interior seal section of first shield inner edge with form sealing connection between the outer peripheral face of bearing inner circle, the external seal section of first shield outer edge with the sealed face sealing connection of first side on the first side of bearing inner circle, joint portion on the first shield with first side joint face joint on the first side of bearing inner circle.
3. The bearing with the axial pretension compensating structure according to claim 1, wherein two sealing ring grooves are axially spaced on the outer circumferential surface of the bearing outer ring, and an O-ring is disposed in each sealing ring groove.
4. The bearing with the axial pretension compensating structure according to claim 1, wherein the cage is stamped and formed of a cold-rolled steel sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711406555.6A CN107939839B (en) | 2017-12-22 | 2017-12-22 | Bearing with axial pretension compensation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711406555.6A CN107939839B (en) | 2017-12-22 | 2017-12-22 | Bearing with axial pretension compensation structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107939839A CN107939839A (en) | 2018-04-20 |
| CN107939839B true CN107939839B (en) | 2021-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711406555.6A Active CN107939839B (en) | 2017-12-22 | 2017-12-22 | Bearing with axial pretension compensation structure |
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| Country | Link |
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| CN (1) | CN107939839B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011231862A (en) * | 2010-04-28 | 2011-11-17 | Ntn Corp | Rolling bearing |
| CN202484095U (en) * | 2012-01-11 | 2012-10-10 | 宁波市鄞州金鑫轴承五金有限公司 | Stainless steel water-sealed bearing |
| CN203670490U (en) * | 2014-01-20 | 2014-06-25 | 温岭市鑫标精密轴承有限公司 | Bearing |
| CN203717673U (en) * | 2014-03-08 | 2014-07-16 | 启东锦桥轴承有限公司 | Non-contact sealing ring bearing with shoulder protector |
| CN203770422U (en) * | 2014-03-31 | 2014-08-13 | 宁波慈兴轴承有限公司 | Axial shock absorption bearing with O-shaped ring on outer ring |
| CN207701608U (en) * | 2017-12-22 | 2018-08-07 | 上海中隆轴承有限公司 | A kind of bearing with axial pretightening collocation structure |
-
2017
- 2017-12-22 CN CN201711406555.6A patent/CN107939839B/en active Active
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| Publication number | Publication date |
|---|---|
| CN107939839A (en) | 2018-04-20 |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190926 Address after: 242200 Guangde Jianshe Road Economic Development Zone 5, Xuancheng, Anhui Applicant after: Guangde Zhonglong Bearing Co., Ltd. Address before: 201499, Shanghai, Fengxian District Pu Pu Industrial Zone, Pu Pu Avenue, No. 28 Applicant before: Shanghai Zhonglong Bearing Co., Ltd. |
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| TA01 | Transfer of patent application right | ||
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