CN213451336U - Slewing bearing with three-row-column combined structure - Google Patents
Slewing bearing with three-row-column combined structure Download PDFInfo
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- CN213451336U CN213451336U CN202022508622.9U CN202022508622U CN213451336U CN 213451336 U CN213451336 U CN 213451336U CN 202022508622 U CN202022508622 U CN 202022508622U CN 213451336 U CN213451336 U CN 213451336U
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- ring
- inner ring
- raceway
- slewing bearing
- rolling body
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Abstract
The utility model discloses a slewing bearing with a three-row column combined structure, which comprises an inner ring and an outer ring, wherein the inner ring comprises a first inner ring and a second inner ring, the first inner ring and the second inner ring are mutually overlapped and fixedly connected through screws to form the inner ring, and the outer ring sleeve is arranged outside the inner ring; be provided with first rolling element between the inboard in first inner circle outside and outer lane, the both ends of first rolling element are provided with the fan-shaped first holder in axle center, are provided with second rolling element and third rolling element between the inboard in second inner circle outside and outer lane, and the both ends of second rolling element are provided with the fan-shaped second holder in axle center, and the both ends of third rolling element are provided with radial fan-shaped holder, the utility model is suitable for a slewing bearing for first rolling element, second rolling element and third rolling element even respectively, the mutual interference friction when avoiding appearing rolling reduces raceway contact stress, avoids appearing raceway edge conquassation phenomenon.
Description
Technical Field
The utility model belongs to the technical field of slewing bearing, specifically a three-row post integrated configuration slewing bearing.
Background
The slewing bearing is a novel mechanical part which is gradually raised in the world in the last forty years and comprises an inner ring, an outer ring, a rolling body and the like;
the three rows of roller slewing bearings are provided with three seat rings, the upper roller path, the lower roller path and the radial roller path are respectively separated, so that the load of each row of rollers can be determined accurately, various loads can be borne simultaneously, the roller slewing bearing is one of four products with the largest bearing capacity, the axial size and the radial size are large, the structure is firm, and the roller slewing bearing is particularly suitable for heavy machinery with large diameter requirements, such as bucket wheel type excavators, wheel type cranes, marine cranes, port cranes, molten steel transporting rotary tables, large-tonnage automobile cranes and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's defect, provide a three-row post integrated configuration slewing bearing.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a slewing bearing with a three-row-column combined structure comprises an inner ring and an outer ring, wherein the inner ring comprises a first inner ring and a second inner ring, the first inner ring and the second inner ring are mutually overlapped and fixedly connected through screws to form the inner ring, the outer ring sleeve is arranged outside the inner ring, and an O-shaped ring is embedded in the overlapped surface of the first inner ring and the second inner ring;
the inner ring structure is characterized in that a first rolling body is arranged between the outer side of the first inner ring and the inner side of the outer ring, two ends of the first rolling body are provided with first axial sector-shaped retainers, a second rolling body and a third rolling body are arranged between the outer side of the second inner ring and the inner side of the outer ring, two ends of the second rolling body are provided with second axial sector-shaped retainers, and two ends of the third rolling body are provided with radial sector-shaped retainers.
Preferably, the inner side of the outer ring is provided with two first axial raceways and a first radial raceway, the outer sides of the first inner ring and the second inner ring are both provided with a second axial raceway, and the outer side of the second inner ring is also provided with a second radial raceway;
when the inner ring and the outer ring are sleeved, the first axial raceway and the second axial raceway form a complete axial raceway, and the first rolling body and the second rolling body are respectively positioned in the two complete axial raceways;
when the inner ring and the outer ring are sleeved, the first radial raceway and the second radial raceway form a complete radial raceway, and the third rolling element is located in the complete radial raceway.
Preferably, the two complete axial raceways formed between the first inner ring and the second inner ring and the outer ring are symmetrical to each other about the centerline of the slewing bearing.
Preferably, a gear is sleeved on the inner side of the second inner ring.
Preferably, a first sealing ring is further arranged between the outer side of the first inner ring and the inner side of the outer ring, a second sealing ring is further arranged between the outer side of the second inner ring and the inner side of the outer ring, and the first sealing ring and the second sealing ring can seal two complete axial raceways.
Preferably, the first seal ring and the second seal ring have elasticity.
Preferably, the two sides of the lower part of the cross section of the first sealing ring and the second sealing ring are in a barb shape, and one side of the upper part of the cross section of the first sealing ring and the second sealing ring is in a structure which is inclined and raised upwards.
The utility model relates to a three-row column combined structure slewing bearing, the both ends of first rolling element are provided with the fan-shaped first retainer in axle center, the both ends of second rolling element are provided with the fan-shaped second retainer in axle center, the both ends of third rolling element are provided with radial fan-shaped retainer, such structural arrangement makes the difference of first rolling element, second rolling element and third rolling element even, mutual interference friction when avoiding appearing rolling reduces raceway contact stress, avoid appearing the phenomenon of raceway edge conquassation, also can reduce the degree of difficulty of raceway processing simultaneously, can bear bigger overturning moment, axial force and radial force;
the utility model discloses in, the setting of first sealing washer and second sealing washer can prevent outside dust, impurity gets into the inside raceway operation that influences of supporting, avoid supporting inside grease to leak simultaneously, and the below both sides in first sealing washer and second sealing washer cross-section are the barb type, top one side is the structure that the slope was kicked up, such structure setting makes first sealing washer and second sealing washer after the installation, be on first sealing washer and the second sealing washer and be barb type structure position and can collude in the opening between inner circle and outer lane, thereby make the sealing performance of first sealing washer and second sealing washer higher.
Drawings
Fig. 1 is a schematic overall structure diagram of a slewing bearing with a three-row column combined structure according to the present invention;
fig. 2 is a schematic structural view of a first sealing ring in a slewing bearing with a three-row column combined structure according to the present invention;
fig. 3 is a side view of the slewing bearing with a three-row column combined structure of the present invention.
Reference numerals: 1. a first inner race; 2. a screw; 3. a third rolling element; 4. a first seal ring; 5. an outer ring; 6. an axial fan-shaped first holder; 7. a first rolling element; 8. a radial sector-shaped cage; 9. an axial sector second retainer; 10. a second seal ring; 11. a second rolling element; 12. an O-shaped ring; 13. a second inner race.
Detailed Description
The following further describes a specific embodiment of a slewing bearing with a three-row column combined structure according to the present invention with reference to fig. 1 to 3. The utility model relates to a three-row column integrated configuration slewing bearing is not limited to the description of following embodiment.
Example 1:
the embodiment provides a concrete structure of a slewing bearing with a three-row-column combined structure, which comprises an inner ring and an outer ring 5, wherein the inner ring comprises a first inner ring 1 and a second inner ring 13, the first inner ring 1 and the second inner ring 13 are mutually overlapped and fixedly connected through a screw 2 to form the inner ring, the outer ring 5 is sleeved outside the inner ring, and an O-shaped ring 12 is embedded in the overlapped surface of the first inner ring 1 and the second inner ring 13;
a first rolling body 7 is arranged between the outer side of the first inner ring 1 and the inner side of the outer ring 5, two ends of the first rolling body 7 are provided with axial sector first retainers 6, a second rolling body 11 and a third rolling body 3 are arranged between the outer side of the second inner ring 13 and the inner side of the outer ring 5, two ends of the second rolling body 11 are provided with axial sector second retainers 9, and two ends of the third rolling body 3 are provided with radial sector retainers 8.
The inner side of the outer ring 5 is provided with two first axial raceways and a first radial raceway, the outer sides of the first inner ring 1 and the second inner ring 13 are both provided with a second axial raceway, and the outer side of the second inner ring 13 is also provided with a second radial raceway;
when the inner ring and the outer ring 5 are sleeved, the first axial roller path and the second axial roller path form a complete axial roller path, and the first rolling body 7 and the second rolling body 11 are respectively positioned in the two complete axial roller paths;
when the inner ring and the outer ring 5 are sleeved, the first radial raceway and the second radial raceway form a complete radial raceway, and the third rolling element 3 is positioned in the complete radial raceway.
The two complete axial raceways formed between the first and second inner rings 1, 13 and the outer ring 5 are symmetrical to each other about the centre line of the slewing bearing.
The inner side of the second inner ring 13 is sleeved with a gear.
By adopting the technical scheme:
the two ends of the first rolling body 7 are provided with the fan-shaped first holders 6 of the axle center, the two ends of the second rolling body 11 are provided with the fan-shaped second holders 9 of the axle center, the two ends of the third rolling body 3 are provided with the radial fan-shaped holders 8, the structure arrangement enables the first rolling body 7, the second rolling body 11 and the third rolling body 3 to be uniform respectively, mutual interference friction when rolling is avoided, raceway contact stress is reduced, the phenomenon of crushing of the edge of the raceway is avoided, meanwhile, the difficulty of raceway processing can also be reduced, and the large overturning moment, the axial force and the radial force can be borne.
Example 2:
the embodiment provides a concrete structure of a slewing bearing with a three-row-column combined structure, which comprises an inner ring and an outer ring 5, wherein the inner ring comprises a first inner ring 1 and a second inner ring 13, the first inner ring 1 and the second inner ring 13 are mutually overlapped and fixedly connected through a screw 2 to form the inner ring, the outer ring 5 is sleeved outside the inner ring, and an O-shaped ring 12 is embedded in the overlapped surface of the first inner ring 1 and the second inner ring 13;
a first rolling body 7 is arranged between the outer side of the first inner ring 1 and the inner side of the outer ring 5, two ends of the first rolling body 7 are provided with axial sector first retainers 6, a second rolling body 11 and a third rolling body 3 are arranged between the outer side of the second inner ring 13 and the inner side of the outer ring 5, two ends of the second rolling body 11 are provided with axial sector second retainers 9, and two ends of the third rolling body 3 are provided with radial sector retainers 8.
The inner side of the outer ring 5 is provided with two first axial raceways and a first radial raceway, the outer sides of the first inner ring 1 and the second inner ring 13 are both provided with a second axial raceway, and the outer side of the second inner ring 13 is also provided with a second radial raceway;
when the inner ring and the outer ring 5 are sleeved, the first axial roller path and the second axial roller path form a complete axial roller path, and the first rolling body 7 and the second rolling body 11 are respectively positioned in the two complete axial roller paths;
when the inner ring and the outer ring 5 are sleeved, the first radial raceway and the second radial raceway form a complete radial raceway, and the third rolling element 3 is positioned in the complete radial raceway.
The two complete axial raceways formed between the first and second inner rings 1, 13 and the outer ring 5 are symmetrical to each other about the centre line of the slewing bearing.
The inner side of the second inner ring 13 is sleeved with a gear.
A first sealing ring 4 is further arranged between the outer side of the first inner ring 1 and the inner side of the outer ring 5, a second sealing ring 10 is further arranged between the outer side of the second inner ring 13 and the inner side of the outer ring 5, and the first sealing ring 4 and the second sealing ring 10 can seal two complete axial raceways.
The first seal ring 4 and the second seal ring 10 have elasticity.
The two sides of the lower part of the sections of the first sealing ring 4 and the second sealing ring 10 are in a barb shape, and one side of the upper part is in a structure which is inclined and raised upwards.
By adopting the technical scheme:
the arrangement of the first sealing ring 4 and the second sealing ring 10 can prevent external dust, impurities can enter the inside of the supporting to influence the operation of the roller path, meanwhile, the leakage of grease inside the supporting is avoided, the two sides of the lower part of the cross section of the first sealing ring 4 and the cross section of the second sealing ring 10 are barb type, one side of the upper part is a structure which is obliquely raised upwards, the arrangement of the structure enables the first sealing ring 4 and the second sealing ring 10 to be installed, the barb type structure part on the first sealing ring 4 and the second sealing ring 10 can be hooked in an opening between the inner ring and the outer ring 5, and therefore the sealing performance of the first sealing ring 4 and the second sealing ring 10 is higher.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (7)
1. The utility model provides a three-row column integrated configuration slewing bearing, includes inner circle and outer lane (5), its characterized in that: the inner ring comprises a first inner ring (1) and a second inner ring (13), the first inner ring (1) and the second inner ring (13) are mutually overlapped and fixedly connected through a screw (2) to form the inner ring, the outer ring (5) is sleeved outside the inner ring, and an O-shaped ring (12) is embedded in the overlapped surface of the first inner ring (1) and the second inner ring (13);
the inner ring structure is characterized in that a first rolling body (7) is arranged between the outer side of the first inner ring (1) and the inner side of the outer ring (5), two ends of the first rolling body (7) are provided with first axial center fan-shaped retainers (6), the outer side of the second inner ring (13) is provided with a second rolling body (11) and a third rolling body (3) between the inner sides of the outer ring (5), two ends of the second rolling body (11) are provided with second axial center fan-shaped retainers (9), and two ends of the third rolling body (3) are provided with radial fan-shaped retainers (8).
2. The slewing bearing with the three-row combined column structure as claimed in claim 1, wherein: two first axial raceways and a first radial raceway are arranged on the inner side of the outer ring (5), a second axial raceway is respectively arranged on the outer sides of the first inner ring (1) and the second inner ring (13), and a second radial raceway is also arranged on the outer side of the second inner ring (13);
when the inner ring and the outer ring (5) are sleeved, the first axial raceway and the second axial raceway form a complete axial raceway, and the first rolling body (7) and the second rolling body (11) are respectively positioned in the two complete axial raceways;
when the inner ring and the outer ring (5) are sleeved, the first radial raceway and the second radial raceway form a complete radial raceway, and the third rolling body (3) is located in the complete radial raceway.
3. A slewing bearing with a three-row column combined structure as claimed in claim 2, wherein: two complete axial raceways formed between the first inner ring (1) and the second inner ring (13) and the outer ring (5) are mutually symmetrical about the centre line of the slewing bearing.
4. The slewing bearing with the three-row combined column structure as claimed in claim 1, wherein: and a gear is sleeved on the inner side of the second inner ring (13).
5. A slewing bearing with a three-row column combined structure as claimed in claim 2, wherein: the bearing is characterized in that a first sealing ring (4) is further arranged between the outer side of the first inner ring (1) and the inner side of the outer ring (5), a second sealing ring (10) is further arranged between the outer side of the second inner ring (13) and the inner side of the outer ring (5), and the first sealing ring (4) and the second sealing ring (10) can seal two complete axial raceways.
6. The slewing bearing with the three-row combined column structure as claimed in claim 5, wherein: the first seal ring (4) and the second seal ring (10) have elasticity.
7. The slewing bearing with the three-row combined column structure as claimed in claim 5, wherein: the two sides of the lower part of the cross section of the first sealing ring (4) and the second sealing ring (10) are in a barb shape, and one side of the upper part of the cross section of the first sealing ring and the second sealing ring is in a structure which is inclined and raised upwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022508622.9U CN213451336U (en) | 2020-11-03 | 2020-11-03 | Slewing bearing with three-row-column combined structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022508622.9U CN213451336U (en) | 2020-11-03 | 2020-11-03 | Slewing bearing with three-row-column combined structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213451336U true CN213451336U (en) | 2021-06-15 |
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ID=76298127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022508622.9U Active CN213451336U (en) | 2020-11-03 | 2020-11-03 | Slewing bearing with three-row-column combined structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213451336U (en) |
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2020
- 2020-11-03 CN CN202022508622.9U patent/CN213451336U/en active Active
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