CN113323962B - Plane connection special bearing capable of bearing tension and pressure - Google Patents
Plane connection special bearing capable of bearing tension and pressure Download PDFInfo
- Publication number
- CN113323962B CN113323962B CN202110724438.4A CN202110724438A CN113323962B CN 113323962 B CN113323962 B CN 113323962B CN 202110724438 A CN202110724438 A CN 202110724438A CN 113323962 B CN113323962 B CN 113323962B
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- bearing
- ring
- bearing ring
- fastening bolt
- fastening nut
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- 230000007246 mechanism Effects 0.000 claims description 12
- 230000033001 locomotion Effects 0.000 abstract description 5
- 230000008602 contraction Effects 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
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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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/10—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt
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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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
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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
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention belongs to the technical field of bearings, and discloses a special plane connection bearing capable of bearing tension and pressure, which comprises a first bearing ring, a second bearing ring, a fastening bolt, a fastening nut, an inner ring roller and an outer ring roller, wherein the first bearing ring and the second bearing ring are axially locked through the fastening bolt and the fastening nut, the head of the fastening bolt is adjacent to the second bearing ring, the fastening nut is adjacent to the first bearing ring, an inner raceway is arranged between the head of the fastening bolt and the second bearing ring, the inner ring roller is arranged in the inner raceway, an outer raceway is arranged between the second bearing ring and the first bearing ring, and the outer ring roller is arranged in the outer raceway. The invention can meet the requirements of complex motions of contraction, extension and the like while rotating between two planes.
Description
Technical Field
The invention belongs to the technical field of bearings, and particularly relates to a special plane connection bearing capable of bearing tension and pressure.
Background
The existing special bearings are classified differently according to different application occasions, and there are special bearings capable of supporting bidirectional tension and special bearings designed by changing the shapes of inner and outer rings of the bearings.
In practice the following situations exist: there is a need for a bearing that can meet the rotational connection between two planes and can meet the tensile stress under the conditions of bearing compressive stress. For example, in the design of a pipeline cleaning robot, two plane mechanisms need to be connected, rotation transmission exists between the two plane mechanisms, and the robot needs to maintain the total length of the robot in the design process of the robot due to the environmental conditions of stretching and compressing when the pipeline cleaning robot is used for cleaning pipelines. However, none of the existing special bearings can solve this practical problem. It is therefore necessary to provide a special bearing which is able to withstand not only compressive but also tensile stresses and which allows a connection between two narrower planes.
Disclosure of Invention
Aiming at the problem that the existing special bearing cannot meet the requirements of complex motions of contraction, stretching and the like while rotating between two planes, the invention provides a plane connection special bearing capable of bearing pulling and pressing forces.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides a can bear special bearing of plane connection of pulling and pressing force, includes first bearing ring, second bearing ring, holding bolt, holding nut, inner circle roller and outer lane roller, pass through between first bearing ring and the second bearing ring holding bolt and holding nut carry out axial locking, holding bolt's head with the second bearing ring is adjacent, holding nut with first bearing ring is adjacent, holding bolt's head with be equipped with the inner raceway between the second bearing ring, the inner circle roller sets up in the inner raceway, be equipped with the outer raceway between second bearing ring and the first bearing ring, the outer lane roller sets up in the outer raceway.
According to the technical scheme, the second bearing ring is provided with a second counter bore which is small in top and large in bottom and can be penetrated by the fastening bolt in the axial direction, the diameter of a large hole of the second counter bore is larger than or equal to the diameter of the head of the fastening bolt, and the height of the large hole of the second counter bore is larger than or equal to the height of the head of the fastening bolt.
According to the technical scheme, the first bearing ring is provided with a first counter bore which is large in top and small in bottom and can be penetrated by the fastening bolt in the axial direction, the diameter of a large hole of the first counter bore is larger than or equal to that of the fastening nut, and the height of the large hole of the first counter bore is larger than or equal to that of the fastening nut.
According to the technical scheme, the contact surface of the first bearing ring and the second bearing ring is set to be a matched step surface, and the step surface comprises an inner step surface close to the fastening bolt and an outer step surface far away from the fastening bolt.
According to the technical scheme, the outer raceway is arranged between the outer step surfaces of the first bearing ring and the second bearing ring.
According to the technical scheme, the inner ring roller and the outer ring roller are positioned in the same horizontal plane.
According to the technical scheme, the outer end faces of the first bearing ring and the second bearing ring are respectively provided with a plurality of threaded holes.
According to the technical scheme, the anti-loosening mechanism is arranged between the fastening nut and the first bearing ring and is used for preventing the fastening nut from rotating in the direction opposite to the screwing direction.
According to the technical scheme, the anti-loosening mechanism comprises a first anti-return helical tooth and a second anti-return helical tooth which can be meshed with each other, when the fastening nut rotates in the screwing direction, the first anti-return helical tooth and the second anti-return helical tooth can rotate relatively, and when the fastening nut rotates in the direction opposite to the screwing direction, the first anti-return helical tooth and the second anti-return helical tooth are limited to rotate.
According to the technical scheme, the second bearing ring or/and the first bearing ring are/is arranged on the outer side of the outer raceway and provided with a flange.
The invention has the following beneficial effects: according to the invention, the outer ring roller is arranged between the two bearing rings, when the bearing is connected with two planes, the two bearing rings can rotate through the outer ring roller, and further the two planes can rotate; meanwhile, the invention also arranges an inner ring roller between the second bearing ring and the bolt head, so that the inner ring roller bears the axial tensile stress of the bearing, and the outer ring roller bears the compressive stress, specifically, when the bearing does tensile motion, the bearing bears the tensile stress, and the transmission path of the tensile stress is as follows: first bearing ring → fastening nut → fastening bolt → inner ring roller, or: second bearing ring → inner race roller; when the bearing makes contraction movement, it is stressed by pressure, and the transmission path of the pressure stress is: first bearing ring or second bearing ring → outer race roller.
In conclusion, the invention can meet the requirements of complex motions such as contraction and extension while rotating between two planes.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an exploded view of an embodiment of the present invention;
FIG. 3 is a top view of a first race in an embodiment of the present invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is a schematic structural view of a second bearing ring in an embodiment of the present invention;
FIG. 6 is a schematic structural view of a fastening bolt in an embodiment of the present invention;
FIG. 7 is a perspective view of a clinch nut in an embodiment of the invention;
FIG. 8 is a cross-sectional view of a clinch nut in an embodiment of the invention;
fig. 9 is a schematic structural diagram of the anti-loosening mechanism in the embodiment of the invention.
In the figure: 1-a first bearing ring, 1.1-a first counter bore, 2-a second bearing ring, 2.1-a second counter bore, 2.2-a flange, 3-a fastening bolt, 3.1-a head of the fastening bolt, 4-a fastening nut, 5-an inner ring roller, 6-an outer ring roller, 7-an inner raceway, 8-an outer raceway, 9-a threaded hole, 10-an anti-loosening mechanism, 10.1-a first reverse oblique tooth and 10.2-a second reverse oblique tooth.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1-6, a special plane connection bearing capable of bearing tension and pressure comprises a first bearing ring 1, a second bearing ring 2, a fastening bolt 3, a fastening nut 4, an inner ring roller 5 and an outer ring roller 6, wherein the first bearing ring 1 and the second bearing ring 2 are axially locked through the fastening bolt 3 and the fastening nut 4, a head 3.1 of the fastening bolt is adjacent to the second bearing ring 2, the fastening nut 4 is adjacent to the first bearing ring 1, an inner raceway 7 is arranged between the head 3.1 of the fastening bolt and the second bearing ring 2, the inner ring roller 5 is arranged in the inner raceway 7, an outer raceway 8 is arranged between the second bearing ring 2 and the first bearing ring 1, and the outer ring roller 6 is arranged in the outer raceway 8.
In a preferred embodiment of the present invention, as shown in fig. 5, the second bearing ring 2 is provided with a second counterbore 2.1 which is small in top and large in bottom and through which the fastening bolt 3 can pass along the axial direction, the diameter of the large hole of the second counterbore 2.1 is greater than or equal to the diameter of the head 3.1 of the fastening bolt, and the height of the large hole of the second counterbore 2.1 is greater than or equal to the height of the head 3.1 of the fastening bolt. The head of the fastening bolt is completely embedded in the second bearing ring, so that the thickness of the bearing can be reduced, and the connection between two narrow planes (the narrow planes are two planes with smaller space) is realized.
In a preferred embodiment of the present invention, as shown in fig. 3 and 4, the first bearing ring 1 is provided with a first counterbore 1.1 which is large in top and small in bottom and through which the fastening bolt 3 can pass along the axial direction, the diameter of the large hole of the first counterbore 1.1 is greater than or equal to the diameter of the fastening nut 4, and the height of the large hole of the first counterbore 1.1 is greater than or equal to the height of the fastening nut 4. The invention can further reduce the total thickness of the bearing by completely embedding the fastening nut into the first bearing ring, thereby realizing the connection between two narrower planes.
In a preferred embodiment of the present invention, as shown in fig. 1 to 5, the contact surfaces of the first bearing ring 1 and the second bearing ring 2 are provided as adaptive step surfaces, and the step surfaces include an inner step surface close to the fastening bolt 3 and an outer step surface far from the fastening bolt 3. The invention can further reduce the total thickness of the bearing by designing the contact surfaces of the two bearing rings as step surfaces, thereby realizing the connection between two narrower planes.
In a preferred embodiment of the invention, as shown in fig. 1, 4, 5, the outer raceway 8 is provided between the outer step surfaces of the first and second bearing rings 1, 2. The invention respectively arranges the inner and outer ring rollers at the positions of the inner and outer step surfaces, so that the bearing is designed in a flat way, the total thickness of the bearing can be further reduced, and the connection between two narrower planes can be realized.
In a preferred embodiment of the invention, as shown in figure 1, the inner ring rollers 5 and the outer ring rollers 6 are located in the same horizontal plane. The inner ring roller and the outer ring roller are arranged in the same height in the axial direction, so that the total height of the bearing can be further reduced, the connection between two narrower planes is realized, and partial radial force can be offset.
In the preferred embodiment of the present invention, as shown in fig. 1, 3 and 5, the outer end faces of the first bearing ring 1 and the second bearing ring 2 are respectively provided with a plurality of threaded holes 9. The invention realizes the connection between the bearing and the two planes through the threaded hole.
In a preferred embodiment of the present invention, as shown in fig. 3, 4, and 7 to 9, a locking mechanism 10 is disposed between the fastening nut 4 and the first bearing ring 1, and the locking mechanism 10 is used to prevent the fastening nut 4 from rotating in a direction opposite to the screwing direction, so as to pre-tighten the bearing and prevent the fastening screw from rotating in a single direction. Specifically, the anti-loosening mechanism 10 includes a first non-return helical tooth 10.1 and a second non-return helical tooth 10.2 that are capable of meshing with each other, and when the fastening nut 4 rotates in the screwing direction, the first non-return helical tooth 10.1 and the second non-return helical tooth 10.2 can rotate relatively, and when the fastening nut 4 rotates in the direction opposite to the screwing direction, the first non-return helical tooth 10.1 and the second non-return helical tooth 10.2 are restricted from rotating.
In a preferred embodiment of the present invention, as shown in fig. 1 and 5, the second bearing ring or/and the first bearing ring are provided with a rib 2.2 at the outer side of the outer raceway, in this case, the rib is provided at the outer side of the second bearing ring, and the rib can reduce the influence of external pollution on the inside of the bearing.
When the invention is applied specifically, a gap is required to be left between the two bearing rings, the gap is not more than 1mm, and the radial positioning failure of the inner and outer ring rollers can be caused by overlarge gap; the axial position of the inner ring roller is determined by controlling the pre-tightening degree of the screw tightening nut, the pre-tightening requirement of the tightening nut is not over-tightened, and the over-tightening can cause the radial stress overload of the inner ring roller, so that the service life of the bearing is shortened; the upper end of the set nut is milled away on both sides, as shown in fig. 2, to facilitate screwing; the head of the fastening bolt is designed into an umbrella-shaped large plane, so that the fastening bolt is more attractive, and the size of the umbrella-shaped large plane is not too small to influence the strength requirement of the fastening bolt.
The invention can also set the seal ring according to the working environment, if necessary, the following installation seal rings can be arranged: a sealing ring is arranged between the head of the fastening screw and the second bearing ring, the lower end of the inner ring roller is sealed, a sealing ring is arranged in a small hole of a second counter bore of the second bearing ring, and the upper end of the inner ring roller is sealed; and a sealing ring is arranged between the outer edges of the two bearing rings to seal the outer ring of the outer ring roller, and a sealing ring is arranged between the inner step surfaces of the two bearing rings to seal the inner ring of the outer ring roller.
When the invention is connected with two planes, the inner ring roller is the part with the largest stress when the bearing bears the tensile force, and is the main working roller when the shaft bears the tensile force, and the outer ring roller is the main working roller when the bearing bears the pressure. When the bearing is under the condition of small tension, the bearing is directly connected with the fastening bolt by the fastening nut and is pre-tightened, and when the bearing is under overlarge tension, the threaded connection is accidentally destroyed by the direct pre-tightening of the fastening bolt and the fastening bolt, so that the bearing is prevented from falling off.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. The special plane connection bearing capable of bearing tension and pressure is characterized by comprising a first bearing ring (1), a second bearing ring (2), a fastening bolt (3), a fastening nut (4), an inner ring roller (5) and an outer ring roller (6), wherein the first bearing ring (1) and the second bearing ring (2) are axially locked through the fastening bolt (3) and the fastening nut (4), the head (3.1) of the fastening bolt is adjacent to the second bearing ring (2), the fastening nut (4) is adjacent to the first bearing ring (1), an inner raceway (7) is arranged between the head (3.1) of the fastening bolt and the second bearing ring (2), the inner ring roller (5) is arranged in the inner raceway (7), an outer raceway (8) is arranged between the second bearing ring (2) and the first bearing ring (1), the outer ring rollers (6) are arranged in the outer raceway (8).
2. The special plane connection bearing capable of bearing tension and pressure as claimed in claim 1, wherein the second bearing ring (2) is provided with a second counterbore (2.1) which is small at the top and big at the bottom and can be penetrated by the fastening bolt (3) along the axial direction, the diameter of the large hole of the second counterbore (2.1) is larger than or equal to the diameter of the head (3.1) of the fastening bolt, and the height of the large hole of the second counterbore (2.1) is larger than or equal to the height of the head (3.1) of the fastening bolt.
3. The special plane connection bearing capable of bearing tension and pressure as claimed in claim 2, wherein the first bearing ring (1) is provided with a first counterbore (1.1) which is large at the top and small at the bottom and through which the fastening bolt (3) can pass along the axial direction, the diameter of the large hole of the first counterbore (1.1) is greater than or equal to the diameter of the fastening nut (4), and the height of the large hole of the first counterbore (1.1) is greater than or equal to the height of the fastening nut (4).
4. A plain connection special bearing capable of withstanding tensile and compressive forces as claimed in claim 1, 2 or 3 wherein the contact surfaces of the first bearing ring (1) and the second bearing ring (2) are configured as adapted step surfaces, the step surfaces comprising an inner step surface close to the fastening bolt (3) and an outer step surface far from the fastening bolt (3).
5. A plain connection special bearing capable of withstanding tensile and compressive forces according to claim 4, wherein the outer raceway (8) is provided between the outer step surfaces of the first bearing ring (1) and the second bearing ring (2).
6. A plain connection special bearing capable of withstanding tensile and compressive forces as claimed in claim 5 wherein the inner ring rollers (5) and the outer ring rollers (6) are located in the same horizontal plane.
7. The special plane connection bearing capable of bearing tension and pressure as claimed in claim 1, wherein the outer end faces of the first bearing ring (1) and the second bearing ring (2) are provided with a plurality of threaded holes (9).
8. The special plane connection bearing capable of bearing tension and pressure according to claim 1, wherein an anti-loose mechanism (10) is arranged between the fastening nut (4) and the first bearing ring (1), and the anti-loose mechanism (10) is used for preventing the fastening nut (4) from rotating in the direction opposite to the screwing direction.
9. The special plane connection bearing capable of bearing pulling and pressing force as claimed in claim 8, wherein the anti-loosening mechanism comprises a first non-return helical tooth (10.1) and a second non-return helical tooth (10.2) capable of meshing with each other, when the fastening nut (4) rotates in the screwing direction, the first non-return helical tooth (10.1) and the second non-return helical tooth (10.2) can rotate relatively, and when the fastening nut (4) rotates in the direction opposite to the screwing direction, the first non-return helical tooth (10.1) and the second non-return helical tooth (10.2) are restricted from rotating.
10. A plain connection special bearing capable of withstanding tensile and compressive forces as claimed in claim 1, wherein the second bearing ring (2) or/and the first bearing ring (1) is/are provided with a rib (2.2) on the outer side of the outer raceway (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110724438.4A CN113323962B (en) | 2021-06-29 | 2021-06-29 | Plane connection special bearing capable of bearing tension and pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110724438.4A CN113323962B (en) | 2021-06-29 | 2021-06-29 | Plane connection special bearing capable of bearing tension and pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113323962A CN113323962A (en) | 2021-08-31 |
| CN113323962B true CN113323962B (en) | 2022-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110724438.4A Active CN113323962B (en) | 2021-06-29 | 2021-06-29 | Plane connection special bearing capable of bearing tension and pressure |
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| Country | Link |
|---|---|
| CN (1) | CN113323962B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000002237A (en) * | 1998-06-16 | 2000-01-07 | Hitachi Building Systems Co Ltd | Manufacture for thrust bearing device |
| CN103470619A (en) * | 2013-08-06 | 2013-12-25 | 安徽枞晨回转支承有限公司 | Double raceway type plane slewing bearing |
| CN108019425A (en) * | 2016-10-31 | 2018-05-11 | 舍弗勒技术股份两合公司 | Plane bearing |
| CN110566577A (en) * | 2019-10-11 | 2019-12-13 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | Pretightening force adjustable precision combined bearing |
-
2021
- 2021-06-29 CN CN202110724438.4A patent/CN113323962B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000002237A (en) * | 1998-06-16 | 2000-01-07 | Hitachi Building Systems Co Ltd | Manufacture for thrust bearing device |
| CN103470619A (en) * | 2013-08-06 | 2013-12-25 | 安徽枞晨回转支承有限公司 | Double raceway type plane slewing bearing |
| CN108019425A (en) * | 2016-10-31 | 2018-05-11 | 舍弗勒技术股份两合公司 | Plane bearing |
| CN110566577A (en) * | 2019-10-11 | 2019-12-13 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | Pretightening force adjustable precision combined bearing |
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| CN113323962A (en) | 2021-08-31 |
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