CN209818518U - Bolt type cylindrical roller - Google Patents
Bolt type cylindrical roller Download PDFInfo
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- CN209818518U CN209818518U CN201920454274.6U CN201920454274U CN209818518U CN 209818518 U CN209818518 U CN 209818518U CN 201920454274 U CN201920454274 U CN 201920454274U CN 209818518 U CN209818518 U CN 209818518U
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- oil passage
- roller
- bolt
- bolt shaft
- ring
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Abstract
A bolt type cylindrical roller comprises a bolt shaft, a roller and a roller; the bolt shaft comprises a head part, a shaft neck part and a threaded part, the head part of the bolt shaft is provided with an inner ring channel, the inner wall of the roller is provided with an outer ring channel, the rollers are filled between the inner ring channel and the outer ring channel in two rows of full packing shapes, the outer end of the head part of the bolt shaft is provided with a flange, a sealing ring groove is formed in the flange, a sealing ring arranged at the sealing ring groove forms a first-stage sealing structure among the roller, the roller and the bolt shaft, the baffle ring is arranged at the shaft neck part of the bolt shaft and is provided with a ring groove, and a metal stack ring arranged at the ring groove forms a second-stage; the middle part of the bolt shaft is provided with a lubricating oil passage, and the lubricating oil passage comprises an axial oil passage, a head radial oil passage and a journal radial oil passage. The utility model discloses both realized sealedly, made the gyro wheel inside communicate with each other with the external world again, can not form the airtight space that hinders to refuel, sealed reliable, long service life.
Description
Technical Field
The utility model relates to a bolt type cylindrical roller gyro wheel.
Background
In the steel industry, bolt-type cylindrical roller rollers of various specifications and sizes are often used. The operation environment of a steel mill is severe, and the slag foreign matters such as dust, oxide skin and the like are more, so that the roller is required to have certain sealing performance. The existing bolt type cylindrical roller is generally sealed by a metal dustproof cover (as shown in figure 1), wherein 1 ' is a bolt shaft, 2 ' is a roller, 3 ' is a roller, 4 ' is a dustproof cover, and 5 ' is a check ring. The sealing type realizes sealing by means of interference fit of the outer diameter of the dustproof cover and the roller retaining side, and a gap of 0.25-0.5 mm is reserved between the inner diameter of the dustproof cover and the step surfaces of the retainer ring and the bolt shaft. This sealing type simple structure, the assembly is simple and convenient, under the not abominable circumstances of use operating mode, can play better dustproof effect, nevertheless under the abominable circumstances of use operating mode, can not prevent the foreign matter to get into inside the gyro wheel, the inside lubricating grease of gyro wheel is heated and probably flows out from the gap department of shield after the dilution in addition, the oil leak phenomenon appears.
Therefore, under the condition of worse working condition, a more stable sealing type is usually adopted. The dust cover can be replaced by a sealing ring. The sealing ring is arranged in the groove of the bolt shaft and the retainer ring, and has the interference magnitude of 0.1-0.25 mm with the inner diameter of the flange of the roller, so long as the interference magnitude is ensured, the type is reliable in sealing, but the flexibility of the roller is not as good as that of a metal dust cover. In practical application, when the bolt type cylindrical roller wheel adopting the sealing type is used, part of lubricating grease of the roller wheel flows out of the radial oil hole at the journal of the bolt shaft due to overlarge internal pressure during oiling, so that the lubricating grease cannot play a role in lubricating a roller raceway, and the bolt type cylindrical roller wheel is seriously worn in the using process.
Disclosure of Invention
The utility model discloses an invention aim at overcome the above-mentioned not enough of current bolt type cylindrical roller gyro wheel sealing pattern, and provide a bolt type cylindrical roller gyro wheel, can use under abominable operating mode, sealed reliable, long service life.
The technical scheme of the utility model is that: comprises a bolt shaft, a roller and a roller; the bolt shaft comprises a head part, a shaft neck part and a threaded part, the head part of the bolt shaft is provided with an inner ring channel, the inner wall of the roller is provided with an outer ring channel, the rollers are filled between the inner ring channel and the outer ring channel in two rows of full packing shapes, the outer end of the head part of the bolt shaft is provided with a flange, a sealing ring groove is formed in the flange, a sealing ring arranged at the sealing ring groove forms a first-stage sealing structure among the roller, the roller and the bolt shaft, the baffle ring is arranged at the shaft neck part of the bolt shaft and is provided with a ring groove, and a metal stack ring arranged at the ring groove forms a second-stage; the middle part of the bolt shaft is provided with a lubricating oil passage, and the lubricating oil passage comprises an axial oil passage, a head radial oil passage and a journal radial oil passage.
The retainer ring is in interference fit with the shaft neck of the bolt shaft.
The second-stage sealing structure is a labyrinth sealing structure.
The sealing ring is an O-shaped sealing ring.
The end part of the axial oil duct is provided with a threaded end which is matched and assembled with the oil cup; the sectional area of the axial oil passage is larger than that of the head radial oil passage, and the sectional area of the axial oil passage is larger than that of the journal radial oil passage.
The flange of the bolt shaft is used for blocking the roller and limiting the axial movement of the roller, a groove is machined on the outer diameter of the flange, an O-shaped sealing ring is installed at the groove, a groove is machined on the outer diameter of the retainer ring, and a metal stack ring is installed at the groove. The flange direction of the bolt shaft is generally outside the equipment and is arranged in a severe environment space, so that the flange direction is sealed by adopting an O-shaped sealing ring, and foreign matters such as dust, oxide skin and the like can be effectively prevented from entering the roller. The check ring is generally in the equipment or close to the equipment, and the working condition is slightly better than that of the check edge direction of the bolt shaft, so that the check ring is sealed by adopting a metal laminated ring, the metal laminated ring and a groove form a labyrinth, the sealing is realized, the inside of the roller is communicated with the outside, a closed space for blocking oiling is not formed, and the oiling is stopped if lubricating grease is leaked at the check ring when the lubricating grease is added, namely the lubricating grease is filled.
The utility model provides a bolt shaft raceway and gyro wheel raceway, flange, O type sealing washer have formed the great airtight space of pressure, and lubricating grease can not get into the radial oil duct of spindle nose department to can not reach the inside lubricated position of needs of gyro wheel-roller department, and cause the roller to rub the serious problem of loss in the use, the utility model discloses can use under abominable operating mode, sealed reliable can follow the oil cup of gyro wheel bolt shaft tip and add lubricating grease, rational in infrastructure, convenient to use.
Drawings
Fig. 1 is a schematic view of a prior art structure.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is an enlarged view of a portion a of fig. 2.
As shown in the figure, 1, a bolt shaft, 2, an O-shaped sealing ring, 3, a roller, 4, a roller, 5, a metal stack ring, 6 and a retainer ring.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In fig. 2 and 3, the utility model discloses a bolt axle 1, O type sealing washer 2, outer lane 3, roller 4, metal pile ring 5, retaining ring 6. The bolt shaft 1 includes a head portion, a neck portion and a threaded portion, and has an oil hole therein.
The flange of the bolt head is provided with a radial groove, an O-shaped sealing ring is arranged and is in interference fit with the flange of the roller, and the sealing at the position is realized. The bolt shaft is provided with three oil holes, and the middle part and the neck part of the roller path of the head part are respectively provided with a radial oil hole which is vertically intersected with the axial oil hole penetrating through the bolt shaft. The two ends of the bolt shaft are provided with oil cups for adding lubricating grease, and the lubricating grease enters the parts needing lubricating through the oil holes.
The retainer ring is provided with a radial groove, and the metal stack ring is arranged to form a labyrinth with the roller flange to realize sealing at the position. The inner diameter of the check ring is in interference fit with the shaft neck of the bolt, so that the check ring is prevented from loosening when not mounted on a machine.
The utility model discloses a lubricating-oil duct comprises the triplex: one is an axial oil duct and also is a main oil duct, two ends of the main oil duct are usually inner hexagonal holes and then oil cups, the main oil duct is a through hole and can also be a blind hole, only a threaded end or a roller end is provided with the oil cups, and the function of the main oil duct is to enable lubricating grease to enter the inside of the roller; the other oil passage is a radial oil passage, is arranged in the middle of the bolt shaft raceway and is vertically intersected with the main oil passage at the head of the bolt shaft, and the aperture of the main oil passage is slightly smaller than that of the main oil passage and is used for guiding lubricating grease to enter the roller; and the radial oil duct is also arranged at the journal part of the bolt shaft, is vertically intersected with the oil duct at the journal part of the bolt shaft, has a bore diameter slightly smaller than that of the main oil duct, and is used for guiding lubricating grease to enter the journal part to lubricate parts installed at the journal part.
Claims (5)
1. A bolt type cylindrical roller wheel is characterized in that: comprises a bolt shaft (1), a roller (3) and a roller (4); the bolt shaft (1) comprises a head part, a shaft neck part and a threaded part, the head part of the bolt shaft (1) is provided with an inner ring channel, the inner wall of the roller (3) is provided with an outer ring channel, the rollers (4) are filled between the inner ring channel and the outer ring channel in two rows, the outer end of the head part of the bolt shaft (1) is provided with a flange, a sealing ring groove is formed in the flange, a sealing ring (2) arranged at the sealing ring groove forms a first-stage sealing structure among the roller (3), the rollers (4) and the bolt shaft (1), a check ring (6) is arranged at the shaft neck part of the bolt shaft (1), the check ring (6) is provided with a ring groove, and a metal stack ring (5) arranged at the ring groove forms a second-stage sealing structure among the roller (3), the; the middle part of the bolt shaft (1) is provided with a lubricating oil passage, and the lubricating oil passage comprises an axial oil passage, a head radial oil passage and a journal radial oil passage.
2. The bolt-type cylindrical roller wheel according to claim 1, characterized in that: the retainer ring (6) is in interference fit with the shaft neck of the bolt shaft (1).
3. The bolt-type cylindrical roller wheel according to claim 1, characterized in that: the second-stage sealing structure is a labyrinth sealing structure.
4. The bolt-type cylindrical roller wheel according to claim 1, characterized in that: the sealing ring is an O-shaped sealing ring.
5. The bolt-type cylindrical roller wheel according to claim 1, characterized in that: the end part of the axial oil duct is provided with a threaded end which is matched and assembled with the oil cup; the sectional area of the axial oil passage is larger than that of the head radial oil passage, and the sectional area of the axial oil passage is larger than that of the journal radial oil passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920454274.6U CN209818518U (en) | 2019-04-04 | 2019-04-04 | Bolt type cylindrical roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920454274.6U CN209818518U (en) | 2019-04-04 | 2019-04-04 | Bolt type cylindrical roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209818518U true CN209818518U (en) | 2019-12-20 |
Family
ID=68878767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920454274.6U Active CN209818518U (en) | 2019-04-04 | 2019-04-04 | Bolt type cylindrical roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209818518U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321162A (en) * | 2022-01-27 | 2022-04-12 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Full complement roller bolt shaft bearing |
-
2019
- 2019-04-04 CN CN201920454274.6U patent/CN209818518U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321162A (en) * | 2022-01-27 | 2022-04-12 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Full complement roller bolt shaft bearing |
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