CN219492866U - Cross roller double-layer sealing roller bearing - Google Patents
Cross roller double-layer sealing roller bearing Download PDFInfo
- Publication number
- CN219492866U CN219492866U CN202320267755.2U CN202320267755U CN219492866U CN 219492866 U CN219492866 U CN 219492866U CN 202320267755 U CN202320267755 U CN 202320267755U CN 219492866 U CN219492866 U CN 219492866U
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- China
- Prior art keywords
- raceway
- ring
- outer ring
- oil
- sleeves
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- 238000007789 sealing Methods 0.000 title claims description 36
- 239000000428 dust Substances 0.000 claims abstract description 17
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 230000001050 lubricating effect Effects 0.000 claims description 17
- 239000003921 oil Substances 0.000 description 43
- 239000003518 caustics Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Landscapes
- Sealing Of Bearings (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The utility model discloses a double-layer sealed roller bearing with crossed rollers, which comprises an outer ring, an inner ring assembly and rollers arranged between the outer ring and the inner ring assembly, wherein the outer ring is provided with a V-shaped outer ring raceway at the inner diameter, the inner ring assembly is provided with a V-shaped inner ring raceway at the outer diameter, the rollers are arranged between the outer ring raceway and the inner ring raceway, and the rolling axes of the adjacent rollers are mutually perpendicular. Both sides of the bearing are respectively provided with an oil seal and a dust cover for preventing external impurities from entering the rollaway nest through a gap between the outer ring and the inner ring assembly. The inner ring assembly comprises two inner sleeves which are oppositely arranged and a locking ring which is used for fixedly connecting the two inner sleeves, one side of the inner sleeve is provided with an inner raceway conical surface, and the two inner raceway conical surfaces of the two inner sleeves which are oppositely arranged form an inner ring raceway together. The locking ring is matched with the inner diameters of the two inner sleeves to fixedly connect the two inner sleeves. The utility model can solve the technical problem that the existing roller bearing has weaker axial load bearing capacity.
Description
Technical Field
The utility model relates to the technical field of roller bearings, in particular to a double-layer sealing roller bearing with crossed rollers.
Background
The supporting roller bearing of the conveying chain of the automobile coating production line is required to bear the axial force generated by the track support counter force and the transverse movement of the chain besides the radial load. The existing roller bearing adopts a ball bearing and a roller bearing, is mainly used for bearing radial load and has weaker capacity of bearing axial load.
Meanwhile, the working environment of the roller bearing has not only splashed acid-base solution, but also diffuse corrosive medium of the acid-base atmosphere lamp, and the working condition is worse. The sealing performance of the existing roller bearing is poor, so that the roller bearing is easy to corrode, the service life of the roller bearing is seriously influenced, and the normal and stable operation of a production line cannot be effectively met.
Disclosure of Invention
The utility model aims to provide a double-layer sealing roller bearing with crossed rollers, which can solve the technical problem that the existing roller bearing is weak in axial load bearing capacity.
In order to achieve the above purpose, the present utility model adopts the following technical scheme.
The utility model provides a cross roller double-deck sealed roller bearing, includes outer lane, inner circle subassembly and establishes the roller between outer lane and inner circle subassembly, and the outer lane is equipped with the outer lane raceway of V type in internal diameter department, and the inner circle subassembly is equipped with the inner circle raceway of V type in external diameter department, and the roller is established between outer lane raceway and inner circle raceway and adjacent roller's rolling axis mutually perpendicular.
Both sides of the bearing are respectively provided with an oil seal and a dust cover for preventing external impurities from entering the rollaway nest through a gap between the outer ring and the inner ring assembly.
Further, the inner ring assembly comprises two oppositely arranged inner sleeves and a locking ring for fixedly connecting the two inner sleeves, one side of the inner sleeve is provided with an inner raceway conical surface, and the two inner raceway conical surfaces of the two oppositely arranged inner sleeves jointly form an inner ring raceway.
The locking ring is matched with the inner diameters of the two inner sleeves to fixedly connect the two inner sleeves.
Further, the oil seal is a long-lip oil seal, the oil seal is fixedly arranged on the outer ring, the long lip of the oil seal extends towards the direction of the inner ring assembly, and the long lip is obliquely lapped on the end face of the sealing shaft shoulder arranged on the inner sleeve under the self elastic action.
The outer ring, the two oil seals arranged on the two sides of the outer ring and the two inner sleeves arranged oppositely form a sealing cavity for sealing the roller and the lubricating medium.
The inner sleeve is provided with a taper sealing table at the other side of the inner raceway conical surface, the inner diameter of the dust cover is fixedly connected to the inner sleeve through matching with the taper sealing table, the outer diameter of the dust cover extends to the end face of the outer ring and forms a tiny gap with a dust-proof flange arranged on the end face of the outer ring, and the dust cover is arranged at one side of the oil seal far away from the roller and completely covers the oil seal.
Further, an oil filling hole for filling lubricating medium into the sealing cavity is formed in the inner sleeve, the oil filling hole penetrates through the inner sleeve in the radial direction, one end of the oil filling hole is communicated with the sealing cavity, the other end of the oil filling hole is communicated with the inner diameter of the inner sleeve, and a through hole is formed in the locking ring at a position corresponding to the oil filling hole.
Further, one end of the oil filling hole, which is communicated with the sealing cavity, is arranged between the sealing shaft shoulder and the conical surface of the inner raceway.
Further, the two ends of the locking ring are provided with flanging locking structures for tightly attaching the two inner sleeves along the axial direction.
After the technical scheme is adopted, the utility model has the following beneficial effects:
1. the roller bearing adopts the crossed rollers, and the rolling axes of the adjacent rollers are mutually perpendicular, so that the roller has the characteristic of simultaneously bearing radial load and axial load, and has strong bearing capacity;
2. according to the utility model, the roller bearing adopts the oil seal and the dust cover to realize double-layer seal, so that the corrosion of severe working conditions to the roller bearing can be effectively prevented, and the service life is greatly prolonged;
3. the long-lip oil seal is adopted in the oil seal, so that the pressure can be removed in time when the internal pressure of the bearing is increased while the tightness is ensured, the bearing can operate under a proper working condition, and the lubricating medium can be conveniently filled into the bearing.
Drawings
Fig. 1 is a schematic view of the overall structure of the present utility model.
FIG. 2 is a schematic view of the roller arrangement of the present utility model.
Fig. 3 is a schematic view of the overall structure of the outer ring and the oil seal of the present utility model (the symmetrical portions are omitted).
Fig. 4 is a schematic view of the overall structure of the inner ring assembly and the dust cap of the present utility model (the symmetrical portions are omitted).
Fig. 5 is an enlarged schematic view at a in fig. 1.
Fig. 6 is an enlarged schematic view at B in fig. 5.
Fig. 7 is an enlarged schematic view at C in fig. 5.
Description of the drawings: 1. the anti-dust device comprises an outer ring, 11, an outer ring raceway, 12, a dust-proof flange, 2, an inner ring assembly, 21, an inner ring raceway, 22, an inner sleeve, 221, an inner raceway conical surface, 222, a sealing shaft shoulder, 223, an oil filling hole, 23 locking rings, 231, a through hole, 232, a turnover locking structure, 3, a roller, 4, an oil seal, 5 and a dust-proof cover.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the features and performances of a cross roller double-layer sealed roller bearing according to the present utility model will be described in further detail with reference to the accompanying drawings and examples.
Referring to fig. 1 to 7, a double-layer sealed roller bearing with crossed rollers comprises an outer ring 1, an inner ring assembly 2 and rollers 3 arranged between the outer ring 1 and the inner ring assembly 2. The outer ring 1 is provided with a V-shaped outer ring raceway 11 at the inner diameter, the inner ring assembly 2 is provided with a V-shaped inner ring raceway 21 at the outer diameter, the rollers 3 are arranged between the outer ring raceway 11 and the inner ring raceway 21, and the rolling axes of adjacent rollers 3 are mutually perpendicular, as shown in fig. 2.
In particular, the outer ring 1 is a thick-walled outer ring, and can be used as a roller as it is. And the hardness of the outer ring roller path 11 is higher when the outer ring 1 is subjected to heat treatment, so that the hardness of the contact part between the outer diameter of the outer ring 1 and the track is equivalent to that of the track, and the early damage of the conveying chain supporting track can be avoided.
Both sides of the bearing are provided with an oil seal 4 and a dust cover 5 for preventing external impurities from entering the rollaway nest through a gap between the outer ring 1 and the inner ring assembly 2.
Further, the inner ring assembly 2 includes two inner sleeves 22 disposed opposite to each other and a locking ring 23 for fixedly connecting the two inner sleeves 22, wherein an inner raceway tapered surface 221 is disposed on one side of the inner sleeve 22, and the two inner raceway tapered surfaces 221 of the two inner sleeves 22 disposed opposite to each other together form the inner ring raceway 21.
The locking ring 23 is matched with the inner diameters of the two inner sleeves 22 to fixedly connect the two inner sleeves 22, and the two ends of the locking ring 23 are provided with flanging locking structures 232 for tightly attaching the two inner sleeves 22 along the axial direction.
Further, the oil seal 4 is a long lip oil seal, the oil seal 4 is fixedly arranged on the outer ring 1, the long lip of the oil seal 4 extends towards the inner ring assembly 2, and is obliquely lapped on the end face of the sealing shaft shoulder 222 arranged on the inner sleeve 22 under the self elastic action, as shown in fig. 6.
The part of the long lip of the oil seal 4, which is in movable contact with the inner ring assembly 2, is in surface contact, so that the lubricating performance is good, the oil seal 4 is not easy to wear, and the service life is long. And the pressure between the long lip and the sealing shaft shoulder 222 is small, so that the rotation performance of the bearing is good.
The outer ring 1, two oil seals 4 arranged on two sides of the outer ring 1 and two inner sleeves 22 arranged oppositely form a sealing cavity for sealing the roller 3 and the lubricating medium.
The other side of the inner sleeve 22 provided with the inner raceway conical surface 221 is provided with a taper sealing table, the inner diameter of the dust cover 5 is fixedly connected to the inner sleeve 22 by matching with the taper sealing table, the outer diameter of the dust cover 5 extends to the end face of the outer ring 1, a tiny gap is formed between the dust cover 5 and the dust flange 12 arranged on the end face of the outer ring 1, and the dust cover 5 is arranged on one side of the oil seal 4 away from the roller 3 and completely covers the oil seal 4, as shown in fig. 7.
Further, the inner sleeve 22 is provided with an oil filling hole 223 for filling the lubricating medium into the sealing cavity, the oil filling hole 223 penetrates through the inner sleeve 22 along the radial direction, one end of the oil filling hole 223 is communicated with the sealing cavity, the other end of the oil filling hole 223 is communicated with the inner diameter of the inner sleeve 22, and the locking ring 23 is provided with a through hole 231 at a position corresponding to the oil filling hole 223. Specifically, one end of the oil filler hole 223 that communicates with the seal cavity is provided between the seal shoulder 222 and the inner raceway tapered surface 221.
Because the long lip of the oil seal 4 is obliquely lapped on the end face of the sealing shaft shoulder 222 under the action of self elasticity, when the lubricating medium is filled, the original lubricating medium in the roller bearing can push the long lip to overcome the self elasticity under the action of pressure, a gap is formed between the long lip and the end face of the sealing shaft shoulder 222, the original lubricating medium overflows from the gap, the pressure in the bearing is released, and the lubricating medium is easier to fill.
In specific implementation, the roller bearing is installed at a required position by matching the locking ring 23 with the shaft, and the oil filling hole 223 and the through hole 231 are communicated with a lubricating oil path on the shaft to be used for filling lubricating medium into the roller bearing, so that the lubricating medium needs to be filled in advance before use.
The outer diameter part of the outer ring 1 is directly matched with the rollaway nest. Cylindrical rollers which are arranged in a crisscross manner between the outer ring 1 and the inner ring assembly 2 enable the bearing to bear larger axial load and radial load, and meet a harsher use environment.
The oil seal 4 and the dust cover 5 form a double-layer sealing structure, impurities and corrosive substances in the use environment can be primarily isolated by the dust cover 5, and the oil seal 4 can prevent loss of lubricating medium when preventing impurities and corrosive substances from entering the bearing, so that the service life of the roller bearing is prolonged.
The oil seal 4 also has the function of exhausting and decompressing, when the temperature rise and pressure rise are caused by continuous operation in the bearing, the pressure can push the long lip of the oil seal 4 to overcome the self elasticity, a gap is generated between the long lip and the end face of the sealing shaft shoulder 222, part of lubricating medium overflows from the gap, the effect of releasing the pressure in the bearing is achieved, and meanwhile, the function of lubricating the oil seal 4 is played.
It should be noted that, in the present embodiment, the parts not described in detail are all prior art, and the above embodiments are only for illustrating the present utility model, but the present utility model is not limited to the above embodiments, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present utility model falls within the protection scope of the present utility model.
Claims (6)
1. The utility model provides a cross roller double-deck sealed roller bearing, includes outer lane (1), inner circle subassembly (2) and establishes roller (3) between outer lane (1) and inner circle subassembly (2), its characterized in that: the outer ring (1) is provided with a V-shaped outer ring raceway (11) at the inner diameter, the inner ring component (2) is provided with a V-shaped inner ring raceway (21) at the outer diameter, the rollers (3) are arranged between the outer ring raceway (11) and the inner ring raceway (21) and the rolling axes of the adjacent rollers (3) are mutually perpendicular,
both sides of the bearing are respectively provided with an oil seal (4) and a dust cover (5) which are used for preventing external impurities from entering the rollaway nest through a gap between the outer ring (1) and the inner ring assembly (2).
2. A cross roller double seal roller bearing as claimed in claim 1 wherein: the inner ring assembly (2) comprises two inner sleeves (22) which are oppositely arranged and a locking ring (23) which is used for fixedly connecting the two inner sleeves (22), one side of the inner sleeve (22) is provided with an inner raceway conical surface (221), the two inner raceway conical surfaces (221) of the two inner sleeves (22) which are oppositely arranged form an inner ring raceway (21) together,
the locking ring (23) is matched with the inner diameters of the two inner sleeves (22) to fixedly connect the two inner sleeves (22).
3. A cross roller double seal roller bearing as claimed in claim 2 wherein: the oil seal (4) is a long-lip oil seal, the oil seal (4) is fixedly arranged on the outer ring (1), the long lip of the oil seal (4) extends towards the direction of the inner ring assembly (2) and is obliquely lapped on the end face of a sealing shaft shoulder (222) arranged on the inner sleeve (22) under the self elastic action,
the outer ring (1), two oil seals (4) arranged at two sides of the outer ring (1) and two inner sleeves (22) arranged oppositely form a sealing cavity for sealing the roller (3) and the lubricating medium,
the other side that is equipped with interior raceway conical surface (221) in endotheca (22) is equipped with the tapering sealing station, and the internal diameter department of shield (5) is through cooperating fixed connection on endotheca (22) with the tapering sealing station, and the terminal surface of shield (5) external diameter department towards outer circle (1) extends, forms tiny clearance with establishing between dustproof flange (12) on outer circle (1) terminal surface, and shield (5) are established in one side that the oil blanket (4) kept away from roller (3) and are covered oil blanket (4) completely.
4. A cross roller double seal roller bearing as claimed in claim 3 wherein: an oil filling hole (223) for filling lubricating medium into the sealing cavity is formed in the inner sleeve (22), the oil filling hole (223) penetrates through the inner sleeve (22) along the radial direction, one end of the oil filling hole (223) is communicated with the sealing cavity, the other end of the oil filling hole is communicated with the inner diameter of the inner sleeve (22), and a through hole (231) is formed in the locking ring (23) at a position corresponding to the oil filling hole (223).
5. A cross roller double seal roller bearing as in claim 4 wherein: one end of the oil filling hole (223) communicated with the sealing cavity is arranged between the sealing shaft shoulder (222) and the inner raceway conical surface (221).
6. A cross roller double seal roller bearing as claimed in claim 3 wherein: the two ends of the locking ring (23) are provided with flanging locking structures (232) for tightly attaching the two inner sleeves (22) along the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320267755.2U CN219492866U (en) | 2023-02-21 | 2023-02-21 | Cross roller double-layer sealing roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320267755.2U CN219492866U (en) | 2023-02-21 | 2023-02-21 | Cross roller double-layer sealing roller bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219492866U true CN219492866U (en) | 2023-08-08 |
Family
ID=87510723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320267755.2U Active CN219492866U (en) | 2023-02-21 | 2023-02-21 | Cross roller double-layer sealing roller bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219492866U (en) |
-
2023
- 2023-02-21 CN CN202320267755.2U patent/CN219492866U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |