CN111911541A - Fan bearing protection method - Google Patents
Fan bearing protection method Download PDFInfo
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- CN111911541A CN111911541A CN202010812191.7A CN202010812191A CN111911541A CN 111911541 A CN111911541 A CN 111911541A CN 202010812191 A CN202010812191 A CN 202010812191A CN 111911541 A CN111911541 A CN 111911541A
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- Prior art keywords
- jacking
- jacking mechanism
- fan bearing
- protection method
- connecting piece
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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
- F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
- F16C41/04—Preventing damage to bearings during storage or transport thereof or when otherwise out of use
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
- F04D29/059—Roller bearings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention relates to a fan bearing protection method, which comprises the following steps: 1) preparing a workpiece, wherein the workpiece comprises a support, a connecting piece, a jacking mechanism and a control mechanism, the fixed end of the jacking mechanism is hinged on the support, and the jacking end of the jacking mechanism is hinged with the connecting piece; the control mechanism is connected with the jacking mechanism and controls the jacking end to stretch intermittently; 2) fixing the bracket on the outer ring of the bearing, and fixing the connecting piece on the inner ring of the bearing; 3) setting an operation strategy of the jacking mechanism in the control mechanism; 4) the control mechanism controls the operation of the jacking mechanism according to a set operation strategy. The advantages are that: avoiding plastic deformation in the long-term standing or transportation process. The method is simple in structure, is very suitable for the protection requirement of the large fan bearing in the long-term standing or transportation process, and is suitable for wide popularization and application in the industry.
Description
Technical Field
The invention relates to the technical field of mechanical equipment, in particular to a fan bearing protection method.
Background
The bearing is a part for supporting the shaft, which can guide the rotation of the shaft and can also bear the idle part on the shaft, the bearing is a part for fixing and reducing the friction coefficient of load in the mechanical transmission process, namely, a part for reducing the friction coefficient in the power transmission process and keeping the center position of the shaft fixed when other parts move relatively to each other on the shaft, and the bearing is a light-weight part in the modern mechanical equipment and mainly has the function of supporting a mechanical rotating body to reduce the friction coefficient of mechanical load in the transmission process of the equipment and ensure the rotation precision of the equipment. The bearings can be classified into rolling bearings and sliding bearings according to the frictional properties of the mechanical rotating body. The rolling bearing generally comprises an outer ring, an inner ring, a rolling body and a retainer. Rolling bearings are classified into ball bearings and roller bearings according to the shape of the rolling elements.
In the case of a large-sized ball bearing for a fan, the ball bearing is in a standstill state during long-term standing or transportation, and due to minute vibration and oscillation generated during transportation, a contact portion between a rolling body and a ring is worn due to vibration and oscillation, and a mark similar to a brinell mark is generated, thereby causing bearing failure. At present, the following solutions are generally adopted for plastic deformation caused by such factors: 1. calculating static strength before transportation; 2. the shaft and the bearing box are fixed back in the transportation process; 3. the inner ring and the outer ring are separately packaged during transportation; 4. adding pre-pressing to reduce vibration; 5. a suitable lubricant is used.
However, it is obvious that the scheme of separately packaging the inner ring and the outer ring during transportation is only suitable for limited occasions, and other solutions can only improve plastic deformation of the fan bearing caused by long-distance transportation or long-term standing to a certain extent, but cannot solve the problems.
Therefore, no protection scheme for the bearing of the large fan during long-term standing or transportation exists at present.
Disclosure of Invention
The embodiment of the invention aims to overcome the structural defects in the prior art, and provides a fan bearing protection method, which is characterized in that a special workpiece is designed, the workpiece can control an inner ring to rotate relative to an outer ring according to a set radian and frequency, then an operation strategy is set according to parameters such as the quality of the inner ring, the diameter of a raceway, the diameter of a ball and the like based on the workpiece, and a jacking mechanism is controlled to jack according to the operation strategy, so that plastic deformation similar to a brinell impression is avoided in the long-term standing or transportation process. The protection method adopts simple equipment, is convenient to manufacture and is suitable for wide popularization and application in the industry.
In order to achieve the purpose, the protection method for the fan bearing provided by the embodiment of the invention is realized by the following technical scheme:
a fan bearing protection method relates to a fan bearing which is composed of an outer ring, an inner ring, a rolling body and a retainer; the method is characterized by comprising the following steps:
1) the workpiece is prepared based on fan bearing parameters and comprises a support, a connecting piece, a jacking mechanism and a control mechanism, wherein the fixed end of the jacking mechanism is hinged to the support, and the jacking end of the jacking mechanism is hinged to the connecting piece; the control mechanism is connected with the jacking mechanism and controls the jacking end to stretch intermittently;
2) the bracket is detachably fixed on the outer ring of the bearing, and the connecting piece is detachably fixed on the inner ring of the bearing; at the moment, if the jacking end moves from one limit position to the other limit position, the rotating angle of the inner ring relative to the outer ring is not less than 15 degrees;
3) based on the mass of inner circle, the diameter of raceway and the diameter of ball, set up climbing mechanism operating strategy at control mechanism, include: the duration of a single operation period and the starting duration of the jacking mechanism in each operation period;
4) the control mechanism controls the operation of the jacking mechanism according to a set operation strategy.
The value interval of the single operation period time is 7-10 minutes, and in each operation period, the value interval of the starting time of the jacking mechanism is 1/3-1/2 of the operation period time.
The single operation period is 7 minutes and 40 seconds, and the starting time of the jacking mechanism in each operation period is 2 minutes and 40 seconds.
The bracket has a central portion and a plurality of beam portions radially distributed from the central portion; the beam parts are rotationally symmetrical, and the tail ends of the beam parts are provided with long waist holes for being connected to outer ring screw holes through bolts; the fixed end of the jacking mechanism is hinged to one of the beam parts.
The number of the beam parts is three.
The jacking mechanism is an oil cylinder.
The connecting piece is a steel plate, long waist holes used for being connected to screw holes of the inner ring through bolts are formed in the two ends of the connecting piece, and the middle of the connecting piece is hinged to the jacking end.
If the jacking end moves from one limit position to the other limit position, the inner ring rotates by an angle of approximately 15 degrees relative to the outer ring.
Compared with the prior art, the invention has the beneficial effects that: by designing a special workpiece, the workpiece can control the inner ring to rotate relative to the outer ring according to a set radian and frequency, then an operation strategy is set according to parameters such as the quality of the inner ring, the diameter of a raceway, the diameter of a ball and the like based on the workpiece, and the jacking of the jacking mechanism is controlled according to the operation strategy, so that plastic deformation similar to a Brinell impression generated in a long-term standing or transportation process is avoided. The protection method adopts simple equipment, is convenient to manufacture and is suitable for wide popularization and application in the industry.
Drawings
The above features and advantages of the present invention will become more apparent and readily appreciated from the following description of the exemplary embodiments thereof taken in conjunction with the accompanying drawings.
FIG. 1 is a schematic diagram of a workpiece according to an embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the attached drawing figures to facilitate understanding by those skilled in the art:
referring to fig. 1, an embodiment of the present invention provides a protection method for a fan bearing 1. The bearing 1 is composed of an outer ring 11, an inner ring 12, rolling elements 13, and a cage.
The protection device of the fan bearing protection method comprises the following steps:
step one, preparing a workpiece
The workpiece used in the method comprises:
support 2
The bracket 2 is detachably fixed on an outer ring 11 of the bearing 1. The holder 2 has a central portion 21 and a plurality of beam portions 22 radiatively distributed from this central portion 21. The beam parts 22 are rotationally symmetrical and have the same length, and the tail ends of the beam parts 22 are provided with connecting components for detachably connecting to the outer peripheral surface of the outer ring 11. In a preferred embodiment, the end of the beam portion 22 is provided with a long waist hole for connecting to the outer ring screw hole by a bolt, which is a conventional connecting structure in the technical field of the present invention, and therefore, the detailed description thereof is omitted, and the detailed description thereof is omitted.
Connecting piece 3
The connecting piece 3 is intended to be detachably fixed to the inner ring 12 of the bearing 1. In the preferred embodiment, the connecting element 3 is a steel plate in the shape of an arch, the ends of which are provided with oblong holes 31 for the connection by bolts to the threaded holes of the inner ring 12.
It is obvious to those skilled in the art that the bolt connection of the bracket 2 and the outer ring and the bolt connection of the connecting member 3 and the inner ring 12 are only one of the preferred embodiments of the present invention, and in the case of a bearing without bolt holes, connection structures such as a clip structure, a set screw, etc. capable of achieving a non-destructive detachable connection can be applied thereto.
The fixed end of the jacking mechanism 4 is hinged on a beam part of the bracket 2, and the jacking end of the jacking mechanism is hinged with the arched middle part of the connecting piece 3. In the preferred embodiment, the jacking mechanisms 4 are cylinders.
Therefore, when the support 2 is connected with the outer ring 11 and the connecting piece 3 is connected with the inner ring 12, the jacking end of the jacking mechanism 4 stretches and retracts, the inner ring 12 can be driven to rotate relative to the outer ring 11, and plastic deformation caused by long-term stalling is avoided.
Through research of the inventor, when the oil cylinder drives the inner ring and the outer ring to rotate relatively, an ideal threshold value of the jacking stroke exists.
Below this threshold the effect of avoiding plastic deformation by rotation is reduced. To simplify the design complexity in practice, the threshold simplification here is approximated by: when the jacking end moves from one extreme position to the other extreme position, the inner ring rotates by an angle not less than 15 degrees.
It is envisaged that the lifting effect is limited with respect to increased material and power costs when the angle of rotation is substantially above the threshold value, and therefore in a preferred embodiment the angle of rotation of the inner race is substantially 15 when the jacking end moves from one extreme position to the other extreme position.
Control mechanism
The control mechanism is connected with the jacking mechanism 4 and controls the jacking end to stretch intermittently.
Step two, installing the workpiece
Fixing the bracket 2 on the outer ring 11 of the bearing 1 and fixing the connecting piece 3 on the inner ring 12 of the bearing 1;
step three, setting operation strategy
Based on the parameters such as the quality of inner circle, the diameter of raceway and the diameter of ball, set up climbing mechanism operating strategy at control mechanism, include: the duration of a single operating cycle, and the duration of the jacking mechanism starting in each operating cycle.
The above analysis can be performed by mechanical simulation finite element analysis software, and also in order to simplify the complexity of design in practice, the inventor provides a preferred solution for simplifying the approximation: the value interval of the time length of a single operation cycle is 7-10 minutes, and in each operation cycle, the value interval of the starting time length of the jacking mechanism is 1/3-1/2 of the time length of the operation cycle.
In a further preferred embodiment, the single operating cycle is 7 minutes and 40 seconds long, and the jacking mechanism is activated for 2 minutes and 40 seconds long in each operating cycle.
Step four, executing
The control mechanism controls the jacking mechanism to operate according to a set operation strategy.
Compared with the prior art, the invention has the beneficial effects that: by designing a special workpiece, the workpiece can control the inner ring to rotate relative to the outer ring according to a set radian and frequency, then an operation strategy is set according to parameters such as the quality of the inner ring, the diameter of a raceway, the diameter of a ball and the like based on the workpiece, and the jacking of the jacking mechanism is controlled according to the operation strategy, so that plastic deformation similar to a Brinell impression generated in a long-term standing or transportation process is avoided. The protection method adopts simple equipment, is convenient to manufacture and is suitable for wide popularization and application in the industry.
Although the present invention is described in detail with reference to the embodiments, it should be understood by those skilled in the art that the above embodiments are only one of the preferred embodiments of the present invention, and not all embodiments can be enumerated herein for the sake of brevity, and any embodiment that can embody the claims of the present invention is within the protection scope of the present invention.
It should be noted that the above-mentioned embodiments are provided for further detailed description of the present invention, and the present invention is not limited to the above-mentioned embodiments, and those skilled in the art can make various modifications and variations on the above-mentioned embodiments without departing from the scope of the present invention.
Claims (8)
1. A fan bearing protection method relates to a fan bearing which is composed of an outer ring, an inner ring, a rolling body and a retainer; the method is characterized by comprising the following steps:
1) preparing a workpiece based on fan bearing parameters, wherein the workpiece comprises a support, a connecting piece, a jacking mechanism and a control mechanism, the fixed end of the jacking mechanism is hinged to the support, and the jacking end of the jacking mechanism is hinged to the connecting piece; the control mechanism is connected with the jacking mechanism and controls the jacking end to stretch intermittently;
2) the bracket is detachably fixed on the outer ring of the bearing, and the connecting piece is detachably fixed on the inner ring of the bearing; at the moment, if the jacking end moves from one limit position to the other limit position, the rotating angle of the inner ring relative to the outer ring is not less than 15 degrees;
3) based on the mass of inner circle, the diameter of raceway and the diameter of ball, set up climbing mechanism operating strategy at control mechanism, include: the duration of a single operation period and the starting duration of the jacking mechanism in each operation period;
4) the control mechanism controls the operation of the jacking mechanism according to a set operation strategy.
2. A fan bearing protection method as claimed in claim 1, wherein: the value interval of the single operation period time is 7-10 minutes, and in each operation period, the value interval of the starting time of the jacking mechanism is 1/3-1/2 of the operation period time.
3. A fan bearing protection method as claimed in claim 1, wherein: the single operation period is 7 minutes and 40 seconds, and the starting time of the jacking mechanism in each operation period is 2 minutes and 40 seconds.
4. A fan bearing protection method as claimed in claim 1, wherein: the bracket has a central portion and a plurality of beam portions radially distributed from the central portion; the beam parts are rotationally symmetrical, and the tail ends of the beam parts are provided with long waist holes for being connected to outer ring screw holes through bolts; the fixed end of the jacking mechanism is hinged to one of the beam parts.
5. A fan bearing protection method as claimed in claim 4, wherein: the number of the beam parts is three.
6. A fan bearing protection method as claimed in claim 5, wherein: the jacking mechanism is an oil cylinder.
7. A fan bearing protection method as claimed in claim 6, wherein: the connecting piece is a steel plate, long waist holes used for being connected to screw holes of the inner ring through bolts are formed in the two ends of the connecting piece, and the middle of the connecting piece is hinged to the jacking end.
8. A fan bearing protection method as claimed in claim 1, wherein: if the jacking end moves from one limit position to the other limit position, the inner ring rotates by an angle of approximately 15 degrees relative to the outer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010812191.7A CN111911541B (en) | 2020-08-13 | 2020-08-13 | Fan bearing protection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010812191.7A CN111911541B (en) | 2020-08-13 | 2020-08-13 | Fan bearing protection method |
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| Publication Number | Publication Date |
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| CN111911541A true CN111911541A (en) | 2020-11-10 |
| CN111911541B CN111911541B (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010812191.7A Active CN111911541B (en) | 2020-08-13 | 2020-08-13 | Fan bearing protection method |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1116237A1 (en) * | 1981-11-24 | 1984-09-30 | Предприятие П/Я А-1665 | Container for transportation and storage of cooling turbine bearing unit |
| JPH05231424A (en) * | 1992-02-24 | 1993-09-07 | Shinagawa Tsushin Keiso Service:Yugen | Bearing mechanism for fine turning angle |
| US20100129017A1 (en) * | 2007-07-31 | 2010-05-27 | Ntn Corporation | Sensor-equipped bearing for wheel |
| US20110072739A1 (en) * | 2009-09-25 | 2011-03-31 | Moreno Gil A | Isolation Bearing Restraint Devices |
| CN102237750A (en) * | 2010-04-22 | 2011-11-09 | 威力克有限公司 | Wind power turbine electric generator, and wind power turbine equipped with such an electric generator |
| CN102439291A (en) * | 2010-05-31 | 2012-05-02 | 三菱重工业株式会社 | Rolling bearing for wind power generator,and wind power generator |
| CN102447323A (en) * | 2010-09-30 | 2012-05-09 | 西门子公司 | Rotor, generator and wind turbine |
| CN106031570A (en) * | 2015-03-21 | 2016-10-19 | 重庆东宏鑫科技有限公司 | Bearing show shelf chucking device |
| CN106031575A (en) * | 2015-03-21 | 2016-10-19 | 重庆东宏鑫科技有限公司 | Bearing displaying stand |
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-
2020
- 2020-08-13 CN CN202010812191.7A patent/CN111911541B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1116237A1 (en) * | 1981-11-24 | 1984-09-30 | Предприятие П/Я А-1665 | Container for transportation and storage of cooling turbine bearing unit |
| JPH05231424A (en) * | 1992-02-24 | 1993-09-07 | Shinagawa Tsushin Keiso Service:Yugen | Bearing mechanism for fine turning angle |
| US20100129017A1 (en) * | 2007-07-31 | 2010-05-27 | Ntn Corporation | Sensor-equipped bearing for wheel |
| US20110072739A1 (en) * | 2009-09-25 | 2011-03-31 | Moreno Gil A | Isolation Bearing Restraint Devices |
| CN102237750A (en) * | 2010-04-22 | 2011-11-09 | 威力克有限公司 | Wind power turbine electric generator, and wind power turbine equipped with such an electric generator |
| CN102439291A (en) * | 2010-05-31 | 2012-05-02 | 三菱重工业株式会社 | Rolling bearing for wind power generator,and wind power generator |
| CN102447323A (en) * | 2010-09-30 | 2012-05-09 | 西门子公司 | Rotor, generator and wind turbine |
| CN106031570A (en) * | 2015-03-21 | 2016-10-19 | 重庆东宏鑫科技有限公司 | Bearing show shelf chucking device |
| CN106031575A (en) * | 2015-03-21 | 2016-10-19 | 重庆东宏鑫科技有限公司 | Bearing displaying stand |
| CN106840672A (en) * | 2017-01-20 | 2017-06-13 | 上海大学 | Pairing bearing differential retainer dynamic property tester |
| CN107448484A (en) * | 2017-09-01 | 2017-12-08 | 宁波锴立精密轴承有限公司 | A kind of Optimization-type zanjon ball bearing |
Non-Patent Citations (1)
| Title |
|---|
| 张旭忠: "气浮轴承安装支架的设计与分析", 《运城学院学报》 * |
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| CN111911541B (en) | 2022-02-08 |
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