CN116816809A - Heavy-load slewing bearing device with retainer ring for high-precision turntable - Google Patents
Heavy-load slewing bearing device with retainer ring for high-precision turntable Download PDFInfo
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- CN116816809A CN116816809A CN202110999578.2A CN202110999578A CN116816809A CN 116816809 A CN116816809 A CN 116816809A CN 202110999578 A CN202110999578 A CN 202110999578A CN 116816809 A CN116816809 A CN 116816809A
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- Prior art keywords
- bearing
- ring
- outer ring
- inner ring
- bearing outer
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 51
- 239000010959 steel Substances 0.000 claims abstract description 51
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000005299 abrasion Methods 0.000 claims description 4
- 239000004519 grease Substances 0.000 claims description 4
- 230000001050 lubricating effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052755 nonmetal Inorganic materials 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000003860 storage Methods 0.000 abstract description 4
- 238000009924 canning Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- Rolling Contact Bearings (AREA)
Abstract
The invention relates to a heavy-load slewing bearing device for a high-precision turntable with a retainer ring, which is characterized in that a steel ball adopts an end face canning structure, wherein a bearing inner ring and a bearing outer ring are respectively provided with a semicircular notch, the steel ball can be installed in a bearing raceway from the circular notch formed by the two semicircular notches, the bearing raceway section of the bearing inner ring and the bearing outer ring is deeper than that of a common deep-groove ball bearing raceway section, an oil storage groove is formed in the middle of the bearing raceway of the bearing inner ring, a certain number of steel balls are densely distributed in the raceway in sequence and isolated without using a retainer, special retainer rings are installed on the outer sides of all the steel balls, flanges corresponding to the semicircular notches of the bearing outer ring are arranged on the special retainer rings, the special retainer rings are matched with the bearing outer ring in size, the special retainer rings are always fixed relative to the bearing outer ring, the flange parts of the special retainer rings can prevent the steel balls from sliding out of the raceway in the movement process, and rotary sealing pieces are installed between the bearing inner ring and the bearing outer ring on the outer sides of the steel ball retainer rings. The invention has the advantages of compact structure, high rigidity, low manufacturing cost, simple assembly, good sealing performance, long service life and the like, and has good application prospect and market advantage.
Description
Technical Field
The invention relates to the technical field of rolling bearings, in particular to a heavy-load slewing bearing device with a retainer ring for a high-precision turntable.
Background
The application of the common deep groove ball bearing is very wide, the standard deep groove ball bearing is required to be provided with a bearing retainer, the interval between the steel balls is large, the number of the bearing steel balls is small, the defect of poor axial rigidity exists, in addition, the common dust-proof end cover used for the common deep groove ball bearing cannot bear oil pressure, oil leakage is easy after long-term use, and the service life of the bearing is difficult to guarantee.
The ball bearing without the retainer densely distributed structure has the advantages of more steel balls and higher rigidity. The adjacent roller axes of the traditional 45-degree crossed roller bearing are staggered by 90 degrees, the number of the rollers which are stressed and carried simultaneously in the radial direction of the actual shaft is only half of the number of all the rollers, and the spacing blocks possibly need to be arranged between the adjacent rollers, so that the total number of the rollers is less due to the increase of the roller spacing. The radial rigidity of the ball bearing shaft without the retainer densely distributed structure is higher than that of a 45-degree crossed roller bearing with the same size.
However, due to the special assembly scheme of densely distributed steel balls, the scheme of filling holes on the circumferential surface of the inner ring or the outer ring of the bearing is commonly used, the scheme is required to manufacture additional plugs and positioning pins, the arrangement of the plugs greatly influences the wall thickness of the bearing, the compactness of the bearing is influenced, the tightness of the plugs and the consistency of the inner sides of the plugs and the section of a bearing raceway are considered, and the overall manufacturing difficulty is higher than that of a common ball bearing with a retainer and an end face canned densely distributed ball bearing, and the manufacturing cost is higher.
Aiming at the problems, the invention designs a heavy-load slewing bearing device with a check ring for a high-precision turntable through innovation.
Disclosure of Invention
The invention aims to provide a heavy-duty slewing bearing device with a retainer ring for a high-precision turntable, aiming at the defects of the prior art, and the heavy-duty slewing bearing device has the advantages of compact structure, high rigidity, low manufacturing cost, simple assembly, good sealing performance, long service life and the like.
The utility model provides a take heavy load slewing bearing device for high accuracy revolving stage of retaining ring which characterized in that: the bearing comprises a bearing inner ring, a bearing outer ring, a steel ball, a special check ring and a rotary sealing piece. The bearing inner ring and the bearing outer ring are respectively provided with a semicircular notch, the steel ball can be installed into the bearing raceway from the circular notch formed by the two semicircular notches, the special check ring is installed on the outer side of the steel ball, the rotary sealing piece is installed between the bearing inner ring and the bearing outer ring on the outer side of the steel ball check ring, and the gap between the bearing inner ring and the inner side of the bearing outer ring and the actually installed parts are internally sealed.
Preferably, the radius of the cross section of the semicircular notch of the bearing inner ring and the radius of the semicircular notch of the bearing outer ring are larger than the radius of the steel ball, and the matching relationship between the steel ball and the two semicircular notches in the assembly process is clearance fit.
Preferably, the steel balls are densely distributed in the rollaway nest in turn and are not isolated by using a retainer, and in the actual movement process, the steel balls are not completely contacted, and a certain gap still exists.
Preferably, the clearance between the bearing inner ring and the bearing outer ring is smaller, and the bearing raceway section of the bearing inner ring and the bearing outer ring is deeper than the raceway section of a general deep groove ball bearing raceway.
Preferably, a groove is formed in the middle of each of the raceways of the inner ring and the outer ring of the bearing, and a certain amount of lubricating grease is stored in each groove, so that friction and abrasion between the steel balls and the raceways of the inner ring and the outer ring of the bearing can be effectively reduced.
Preferably, the special retainer ring is matched with the bearing outer ring in size and is always fixed relative to the bearing outer ring, the special retainer ring is provided with a flange corresponding to the semicircular notch of the bearing outer ring, the geometric shape of the flange is not limited, the flange penetrates into the notch of the bearing outer ring but is not contacted with the bearing inner ring, the flange of the special retainer ring can prevent the steel ball from sliding out of the roller path in the moving process, and the special retainer ring is not limited in material and can be made of metal or nonmetal. .
Preferably, the rotary sealing piece is a rotary framework oil seal, and can meet the requirements of dust prevention and sealing under the working condition of long-term continuous rotation of the bearing.
The invention has the beneficial effects that: the steel balls are densely distributed in the bearing without a retainer, and meanwhile, the number of the steel balls carried by the bearing is more than that of a standard deep groove ball bearing, so that the radial and axial rigidity of the bearing is higher; the steel ball is filled at the notch formed by combining the bearing inner ring and the bearing outer ring, the manufacturing difficulty of the notch is low, the assembly is simple, and the steel ball can be effectively prevented from falling off in the moving process through the steel ball baffle; the bearing inner ring and the bearing outer ring are both provided with oil storage grooves, so that friction and abrasion between the steel balls and the raceways of the bearing inner ring and the bearing outer ring can be effectively reduced, and the effective service life is longer. The invention has the advantages of compact structure, high rigidity, low manufacturing cost, simple assembly, good sealing performance and long service life
Description of the drawings:
for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a schematic diagram of an explosive structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a schematic view of the bearing inner ring and bearing outer ring notches of the present invention;
FIG. 4 is a schematic diagram of a special retainer ring according to the present invention;
FIG. 5 is a schematic cross-sectional view of a specially made retainer ring and bearing mounting notch of the present invention;
FIG. 6 is a schematic view of an oil storage groove of an inner ring of a bearing according to the present invention;
fig. 7 is a schematic diagram of an oil storage groove of the outer ring of the bearing.
Description of the symbols in the drawings
1-a bearing inner ring; 2-bearing outer ring; 3-steel balls; 4-specially-made check rings; 5-rotary seal.
The specific embodiment is as follows:
as shown in fig. 1 to 7, the present embodiment adopts the following technical scheme: the bearing comprises a bearing inner ring 1, a bearing outer ring 2, a steel ball 3, a special retainer ring 4 and a rotary sealing piece 5. The bearing inner ring 1 and the bearing outer ring 2 are respectively provided with a semicircular notch, the steel ball 3 can be arranged in the bearing raceway from the circular notch formed by the two semicircular notches, the special check ring 4 is arranged on the outer side of the steel ball 3, the rotary sealing piece 5 is arranged between the bearing inner ring 1 and the bearing outer ring 2 on the outer side of the steel ball check ring 4, and the gap between the inner sides of the bearing inner ring 1 and the bearing outer ring 2 and the actually-arranged parts are internally sealed.
The radius of the semicircular notch sections of the bearing inner ring 1 and the bearing outer ring 2 is larger than that of the steel ball 3, and the matching relationship between the steel ball 3 and the two semicircular notches is clearance fit in the assembly process.
The steel balls 3 are densely distributed in the rollaway nest in turn and are not isolated by using a retainer, and in the actual movement process, the steel balls 3 are not completely contacted, and a certain gap still exists.
The clearance between the bearing inner ring 1 and the bearing outer ring 2 is smaller, and the bearing raceway section of the bearing inner ring 1 and the bearing outer ring 2 is deeper than the raceway section of a common deep groove ball bearing raceway.
The middle parts of the raceways of the bearing inner ring 1 and the bearing outer ring 2 are respectively provided with a groove, and a certain amount of lubricating grease is stored in the two grooves, so that friction and abrasion of the contact between the steel ball 3 and the raceways of the bearing inner ring and the bearing outer ring can be effectively reduced.
The special retainer ring 4 is matched with the bearing outer ring 2 in size and is always fixed relative to the bearing outer ring 2, the special retainer ring 4 is provided with a flange corresponding to a semicircular notch of the bearing outer ring 2, the geometric shape of the flange is not limited, the flange penetrates into the notch of the bearing outer ring but is not in contact with the bearing inner ring 1, the flange of the special retainer ring 4 can prevent the steel ball 3 from sliding out of a roller path in the moving process, and the special retainer ring 4 is not limited in material and can be made of metal or nonmetal. .
The rotary sealing piece 5 is a rotary framework oil seal and can meet the dustproof and sealing requirements of the bearing under the working condition of long-term continuous rotation.
The assembly principle of the invention is briefly described below: firstly, a certain amount of lubricating grease is coated in grooves of the bearing inner ring 1 and the bearing outer ring 2, secondly, semicircular notches of the bearing inner ring 1 and the bearing outer ring 2 are rotated to a proper position, a round hole through which the steel balls 3 can pass is formed by the two notches, the steel balls 3 are sequentially installed into tracks of the bearing inner ring and the bearing outer ring from the round hole, after all the steel balls 3 are installed, the special check ring 4 and the bearing outer ring 2 are coaxially placed, the special check ring 4 is rotated, the flange is aligned with the round hole formed by the two semicircular notches, the special check ring 4 is installed on the outer side of the steel balls, finally, the rotary sealing piece 5 is installed between the bearing inner ring 1 and the bearing outer ring 2 to realize complete sealing of the outer side of the bearing, and internal sealing is carried out between a gap between the inner side of the bearing inner ring 1 and the bearing outer ring 2 and actually installed parts.
It is emphasized that: the foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a take heavy load slewing bearing device for high accuracy revolving stage of retaining ring which characterized in that: the bearing comprises a bearing inner ring, a bearing outer ring, a steel ball, a special check ring and a rotary sealing piece, wherein the bearing inner ring and the bearing outer ring are respectively provided with a semicircular notch, the steel ball can be installed in a bearing raceway from the circular notch formed by the two semicircular notches, the special check ring is installed on the outer side of the steel ball, the rotary sealing piece is installed between the bearing inner ring and the bearing outer ring on the outer side of the steel ball check ring, and the gap between the bearing inner ring and the inner side of the bearing outer ring is internally sealed with actually installed parts.
2. The heavy-duty slewing bearing device with a retainer ring for a high-precision turntable according to claim 1, wherein: the radius of the cross section of the semicircular notch of the bearing inner ring and the radius of the semicircular notch of the bearing outer ring are larger than the radius of the steel ball, and the matching relationship between the steel ball and the two semicircular notches is clearance fit in the assembly process.
3. The heavy-duty slewing bearing device with a retainer ring for a high-precision turntable according to claim 1, wherein: the steel balls are densely distributed in the rollaway nest in turn and are isolated without using a retainer, and in the actual movement process, the steel balls are not completely contacted, and a certain gap still exists.
4. The heavy-duty slewing bearing device with a retainer ring for a high-precision turntable according to claim 1, wherein: the clearance between the bearing inner ring and the bearing outer ring is smaller, and the bearing raceway section of the bearing inner ring and the bearing outer ring is deeper than the bearing raceway section of a common deep groove ball bearing raceway section, so that the contact line of a ball body is longer, and the bearing capacity is effectively improved.
5. The heavy-duty slewing bearing device with a retainer ring for a high-precision turntable according to claim 1, wherein: the bearing inner ring and the bearing outer ring are respectively provided with a groove in the middle of the rollaway nest, and a certain amount of lubricating grease is stored in the two grooves, so that friction and abrasion between the steel ball and the rollaway nest of the bearing inner ring and the bearing outer ring can be reduced.
6. The heavy-duty slewing bearing device with a retainer ring for a high-precision turntable according to claim 1, wherein: the special retainer ring is matched with the bearing outer ring in size and is always fixed relative to the bearing outer ring, the special retainer ring is provided with a flange corresponding to the semicircular notch of the bearing outer ring, the geometric shape of the flange is not limited, the flange penetrates into the notch of the bearing outer ring but is not contacted with the bearing inner ring, the flange of the special retainer ring can prevent the steel ball from sliding out of the roller path in the movement process, and the special retainer ring is not limited in material and can be made of metal or nonmetal.
7. The heavy-duty slewing bearing device with a retainer ring for a high-precision turntable according to claim 1, wherein: the rotary sealing piece is a rotary framework oil seal and can meet the requirements of dust prevention and sealing under the working condition that the bearing continuously rotates for a long time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110999578.2A CN116816809A (en) | 2021-08-29 | 2021-08-29 | Heavy-load slewing bearing device with retainer ring for high-precision turntable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110999578.2A CN116816809A (en) | 2021-08-29 | 2021-08-29 | Heavy-load slewing bearing device with retainer ring for high-precision turntable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116816809A true CN116816809A (en) | 2023-09-29 |
Family
ID=88113178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110999578.2A Pending CN116816809A (en) | 2021-08-29 | 2021-08-29 | Heavy-load slewing bearing device with retainer ring for high-precision turntable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116816809A (en) |
-
2021
- 2021-08-29 CN CN202110999578.2A patent/CN116816809A/en active Pending
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