CN217301263U - Double-row full-complement cylindrical roller bearing for pulley - Google Patents
Double-row full-complement cylindrical roller bearing for pulley Download PDFInfo
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- CN217301263U CN217301263U CN202220699688.7U CN202220699688U CN217301263U CN 217301263 U CN217301263 U CN 217301263U CN 202220699688 U CN202220699688 U CN 202220699688U CN 217301263 U CN217301263 U CN 217301263U
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- nitrile rubber
- roller bearing
- cylindrical roller
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- 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
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Abstract
The utility model relates to a bearing for the pulley specifically relates to a double-row full complement cylindrical roller bearing for pulley, include: the double-roller-way sealing device comprises a double-roller-way outer ring, two single-roller-way inner rings, two rows of rollers, a sealing assembly and a connecting ring; two rows of rollers are respectively arranged between the raceways between the outer ring and the inner ring, sealing components are respectively arranged between the outer ring and the inner ring which are positioned in the end face directions of two ends of the bearing, and the joints of the two inner rings are connected through connecting rings; the seal assembly includes: the steel skeleton and the nitrile rubber ring form an integral combined structure, the steel skeleton is of an L-shaped structure, and one side of the steel skeleton is wrapped by the nitrile rubber ring; one end of the steel skeleton, which is wrapped by the nitrile rubber ring, is contacted with the outer diameter of the inner ring, and the other end of the steel skeleton is contacted with the nitrile rubber ring and the inner diameter of the outer ring together; the problems that the sealing structure is unstable, easy to drop, poor in sealing performance, and inconvenient to install and the inner ring slides relatively are solved; the sealing device has the characteristics of reliable sealing, high bearing capacity, light weight, simplicity and convenience in installation and the like.
Description
Technical Field
The utility model relates to a bearing for the pulley specifically relates to a double-row full complement cylindrical roller bearing for pulley belongs to bearing technical field.
Background
At present, in order to meet the requirements of high bearing capacity and high reliability, a plurality of large-scale devices have increasingly large requirements on a pulley block bearing matched with the large-scale devices; however, the existing pulley bearing has many performance problems: the current SL04PP series seals for INA and SKF are polyurethane seals, which are not rigid and are very easy to fall off when oiling is used on the pulley.
Steel sealing is adopted at home, but the grease leakage condition is serious; there are also double seals, outer steel seals, inner polyurethane seals, but this takes up more axial space, and the roller length is reduced, resulting in a reduced load.
The domestic and foreign inner rings are not connected, and the integrity is not good; the connection is realized by adopting a groove-shaped part, and the gap between the two inner rings is larger after the connection.
SUMMERY OF THE UTILITY MODEL
In view of the poor, the seal structure of leakproofness that above-mentioned pulley bearing exists, defects such as inner circle relative slip, the utility model aims at providing a pulley is with biserial full complement cylindrical roller bearing, this bearing have sealed reliable, bear characteristics such as high, light in weight, simple installation.
In order to realize the purpose, the utility model discloses the technical scheme who adopts is: a double row full complement cylindrical roller bearing for a sheave, comprising: the double-roller-way sealing device comprises a double-roller-way outer ring, two single-roller-way inner rings, two rows of rollers, a sealing assembly and a connecting ring; two rows of rollers are respectively arranged between the raceways between the outer ring and the inner ring, sealing components are respectively arranged between the outer ring and the inner ring which are positioned in the end face directions of two ends of the bearing, and the joints of the two inner rings are connected through connecting rings; the seal assembly includes: the steel skeleton and the nitrile rubber ring form an integral combined structure, the steel skeleton is of an L-shaped structure, and the nitrile rubber ring is wrapped at one side of the steel skeleton; one end of the steel skeleton, which is wrapped by the nitrile rubber ring, is in contact with the outer diameter of the inner ring, and the other end of the steel skeleton is in contact with the inner diameters of the nitrile rubber ring and the outer ring together;
furthermore, an L-shaped steel framework of the sealing assembly is close to one side of the outer end face of the bearing ring, and a nitrile rubber ring is close to one side of the roller;
furthermore, one end of the nitrile rubber ring is of a special-shaped structure with a bent shape, and the other end of the nitrile rubber ring is completely included on the L-shaped steel framework;
furthermore, one end of the nitrile rubber ring in a bent shape is a free end; the nitrile rubber ring is a sealing ring made of nitrile rubber;
in the structure, a step structure is arranged at the inner diameter position of the outer ring in contact with the sealing component, the free end of the nitrile rubber ring is in interference fit with the step of the inner diameter of the outer ring, and a steel skeleton at the same end of the nitrile rubber ring is in clearance fit with the inner diameter of the outer ring;
furthermore, two flanges of the roller are formed on the outer diameter of the inner ring, the sealing assembly is in contact with the outer flange of the inner ring, the outer flange of the inner ring is of a step structure, and one end, wrapped by the nitrile rubber ring, of the steel framework abuts against the side face of the step and is in interference fit with the steel framework and the outer diameter of the inner ring;
the sealing assembly is matched with the bearing ring by adopting a design with larger interference, so that the sealing assembly is not easy to fall off; the steel skeleton and the nitrile rubber are integrally sealed, and meanwhile, the sealing strength and the sealing performance are considered.
The utility model discloses an among the bearing arrangement inner circle, roller and seal assembly form the interior subassembly of bearing jointly, and the inner circle passes through seal assembly with the outer lane and forms the confined cavity, prevents that external pollution from getting into inside the bearing, guarantees the inside leakproofness of bearing.
Furthermore, V-shaped grooves are respectively formed in the inner diameter of the joint of the two inner rings and the outer diameter of the inner flanges of the two inner rings, the bottoms of the two V-shaped grooves are connected by an irregular curve, and the separation sections of the two inner rings are irregular, so that the two inner rings are prevented from rotating relatively;
the structural design of the joint of the two inner rings, namely the two inner rings are in an asymmetric structure, is characterized in that the two inner rings are integrally processed and a special process is adopted during separation, so that the two inner rings can be matched only at a correct position when the two inner rings are combined together;
and a V-shaped groove is formed in the middle inner diameter direction of the two inner rings and the outer diameter direction of the flange, so that the connecting position of the two inner rings is small, and then the two inner rings are separated by adopting a special process.
Furthermore, a groove is respectively arranged on the inner diameter close to the joint of the two inner rings, and the end part of the connecting ring is distributed and pressed into the grooves of the two inner rings, so that the two inner rings are not only axially fixed, but also do not relatively rotate in the rotating direction of the bearing;
furthermore, the connecting ring is annular, a through hole is formed in every adjacent 90 degrees of the connecting ring, and the through hole is used for injecting grease to lubricate the bearing;
furthermore, the connecting ring is made of 08AL material, is one of carbon structural steel and has good plasticity;
furthermore, the outer diameters of the circumferences close to the end faces of the two ends of the outer ring are respectively provided with a semicircular groove in the radial direction, and a fixing ring is arranged in each groove and is used for being fixedly connected with an external part;
furthermore, a part of the fixing ring is embedded in the groove, and a part of the fixing ring extends out of the outer diameter surface of the outer ring to form a bulge.
The utility model has the advantages that: the double-row full-complement cylindrical roller bearing for the pulley solves the problems of unstable sealing structure, easy falling, poor sealing property, relative sliding of inner rings and inconvenient installation; the sealing device has the characteristics of reliable sealing, high bearing capacity, light weight, simplicity and convenience in installation and the like.
Drawings
Fig. 1 is a structural diagram of the double-row full complement cylindrical roller bearing for the pulley of the present invention.
Fig. 2 is an assembly view of the seal assembly of fig. 1.
Fig. 3 is a structural view of the coupling ring of fig. 1.
Fig. 4 is a cross-sectional view of fig. 3.
In the figure, 1, an outer ring, 2, inner rings, 3, rollers, 4, a connecting ring, 5, a steel skeleton, 6, a nitrile rubber ring, 6.1, a free end of the nitrile rubber ring, 7, a separation section of the two inner rings, 4.1, a through hole of the connecting ring, 8 and a fixing ring.
Detailed Description
The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto.
A double row full complement cylindrical roller bearing for a sheave as shown in fig. 1-4, comprising: the double-raceway inner ring comprises a double-raceway outer ring 1, two single-raceway inner rings 2, two rows of rollers 3, a sealing assembly and a connecting ring 4; two rows of rollers 3 are respectively arranged between the raceways between the outer ring 1 and the inner ring 2, sealing components are respectively arranged between the outer ring 1 and the inner ring 2 which are positioned in the end face directions of two ends of the bearing, and the joints of the two inner rings 2 are connected through a connecting ring 4; the seal assembly includes: the steel skeleton 5 and the nitrile rubber ring 6 form an integral combined structure, the steel skeleton 5 is of an L-shaped structure, and one side of the steel skeleton 5 is wrapped by the nitrile rubber ring 6; one end of the steel skeleton 5, which is wrapped by the nitrile rubber ring 6, is contacted with the outer diameter of the inner ring 2, and the other end of the steel skeleton 5 is contacted with the inner diameters of the nitrile rubber ring 6 and the outer ring 1 together;
further, an L-shaped steel framework 5 of the sealing assembly is close to one side of the outer end face of the bearing ring, and a nitrile rubber ring 6 is close to one side of the roller 3;
furthermore, one end of the nitrile rubber ring 6 is of a special-shaped structure with a bent shape, and the other end of the nitrile rubber ring 6 is completely included on the L-shaped steel framework 5;
furthermore, one end of the nitrile rubber ring 5 in a bent shape is a free end;
in the structure, the inner diameter position of the outer ring 1 which is contacted with the sealing component is provided with a step structure, the free end 6.1 of the nitrile rubber ring is in interference fit with the step of the inner diameter of the outer ring 1, and the steel skeleton 5 at the same end with the nitrile rubber ring 6 is in clearance fit with the inner diameter of the outer ring 1;
furthermore, two flanges of the roller 3 are formed on the outer diameter of the inner ring 2, the sealing component is in contact with the outer flanges of the inner ring 2, the outer flanges of the inner ring 2 are of a step structure, and one end, wrapped by the steel skeleton 5, of the nitrile rubber ring 6 abuts against the side surface of the step and is in interference fit with the outer diameter of the inner ring 2 together with the steel skeleton 5;
v-shaped grooves are respectively formed in the inner diameter of the joint of the two inner rings 2 and the outer diameter of the inner flanges of the two inner rings 2, the bottoms of the two V-shaped grooves are connected by an irregular curve, and the separation sections 7 of the two inner rings are irregular, so that the two inner rings 2 are prevented from rotating relatively;
it should be noted that the structural design of the joint of the two inner rings 2, that is, the two inner rings 2 are asymmetric structures, is that the two inner rings 2 are integrally processed, and a special process is adopted during separation, so that only one correct position can be matched with each other when the two inner rings 2 are combined together;
and a V-shaped groove is arranged in the middle inner diameter direction of the two inner rings 2 and the outer diameter direction of the flange, so that the connecting position of the two inner rings 2 is smaller, and then the two inner rings 2 are separated by adopting a special process.
Furthermore, a groove is respectively arranged on the inner diameter close to the joint of the two inner rings 2, and the end part of the connecting ring 4 is distributed and pressed into the grooves of the two inner rings 2, so that the two inner rings 2 are not only axially fixed, but also do not relatively rotate in the rotating direction of the bearing;
furthermore, the connecting ring 4 is annular, a through hole 4.1 is formed in each adjacent 90-degree position of the connecting ring 4, and the through hole is used for injecting grease to lubricate the bearing;
furthermore, the connecting ring 4 is made of 08AL material, is one of carbon structural steel and has good plasticity;
furthermore, the outer diameters of the circumferences close to the end faces of the two ends of the outer ring 1 are respectively and radially provided with a semicircular groove, and a fixing ring 8 is arranged in each groove and is used for being fixedly connected with an external part;
furthermore, a part of the fixing ring 8 is embedded in the groove, and a part of the fixing ring extends out of the outer diameter surface of the outer ring 1 to form a bulge.
When the bearing with the structure is used, grease is injected from the oil hole of the connecting ring 4, and the grease stops when overflowing from the inner diameter of the outer ring 1 and the sealing assembly; by adopting the large interference range, the integrated stainless steel skeleton 5+ the nitrile rubber ring 6 is sealed, the sealing strength is enhanced while the sealing performance is ensured, and the sealing cannot fall off during grease injection.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.
Claims (10)
1. The utility model provides a pulley is with double-row full complement cylindrical roller bearing which characterized in that includes: the double-roller-way sealing device comprises a double-roller-way outer ring, two single-roller-way inner rings, two rows of rollers, a sealing assembly and a connecting ring; two rows of rollers are respectively arranged between the raceways between the outer ring and the inner ring, sealing components are respectively arranged between the outer ring and the inner ring which are positioned in the end face directions of two ends of the bearing, and the joints of the two inner rings are connected through connecting rings; the seal assembly includes: the steel skeleton and the nitrile rubber ring form an integral combined structure, the steel skeleton is of an L-shaped structure, and one side of the steel skeleton is wrapped by the nitrile rubber ring; one end of the steel skeleton wrapped by the nitrile rubber ring is in contact with the outer diameter of the inner ring, and the other end of the steel skeleton is in contact with the inner diameter of the nitrile rubber ring and the inner diameter of the outer ring.
2. The double-row full complement cylindrical roller bearing for the pulley according to claim 1, wherein: one end of the nitrile rubber ring is in a bent shape, and the other end of the nitrile rubber ring is completely included on the L-shaped steel framework.
3. The double-row full complement cylindrical roller bearing for the pulley according to claim 2, wherein: one end of the nitrile rubber ring in a bent shape is a free end.
4. The double-row full complement cylindrical roller bearing for the pulley according to claim 3, wherein: the outer ring inner diameter position that contacts with seal assembly is equipped with the halfpace structure, and the free end of butadiene-acrylonitrile rubber circle and the halfpace interference fit of outer ring inner diameter carry out clearance fit with the steel skeleton of the same end of butadiene-acrylonitrile rubber circle and outer ring inner diameter.
5. The double-row full complement cylindrical roller bearing for the pulley according to claim 1, wherein: the outer diameter of the inner ring is provided with two flanges of the roller, the sealing component is in contact with the outer flanges of the inner ring, the outer flanges of the inner ring are of a step structure, and one end, wrapped by the steel framework, of the nitrile rubber ring abuts against the side face of the step and is in interference fit with the outer diameter of the inner ring together with the steel framework.
6. The double-row full complement cylindrical roller bearing for the pulley according to claim 1, wherein: v-shaped grooves are respectively formed in the inner diameter of the joint of the two inner rings and the outer diameter of the inner flange of the two inner rings, and the bottoms of the two V-shaped grooves are connected by an irregular curve.
7. The double-row full complement cylindrical roller bearing for the pulley according to claim 1, wherein: the inner diameters of the connecting rings close to the joint of the two inner rings are respectively provided with a groove, and the end parts of the connecting rings are distributed and pressed into the grooves of the two inner rings.
8. The double-row full complement cylindrical roller bearing for the pulley according to claim 1, wherein: the connecting ring is circular, and a through hole is formed in each adjacent 90-degree position on the connecting ring.
9. The double row full complement cylindrical roller bearing for a sheave according to any one of claims 1 to 8, wherein: the circumference external diameter close to the direction of the end faces at the two ends of the outer ring is respectively and radially provided with a semicircular groove, and a fixing ring is arranged in the groove.
10. The double-row full complement cylindrical roller bearing for the pulley according to claim 9, wherein: and one part of the fixing ring is embedded in the groove, and the other part of the fixing ring extends out of the outer diameter surface of the outer ring to form a bulge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220699688.7U CN217301263U (en) | 2022-03-29 | 2022-03-29 | Double-row full-complement cylindrical roller bearing for pulley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220699688.7U CN217301263U (en) | 2022-03-29 | 2022-03-29 | Double-row full-complement cylindrical roller bearing for pulley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217301263U true CN217301263U (en) | 2022-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220699688.7U Active CN217301263U (en) | 2022-03-29 | 2022-03-29 | Double-row full-complement cylindrical roller bearing for pulley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217301263U (en) |
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2022
- 2022-03-29 CN CN202220699688.7U patent/CN217301263U/en active Active
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