CN101373001B - Radial pre-tightening method and pre-tightening ring of cylindrical roller bearing - Google Patents
Radial pre-tightening method and pre-tightening ring of cylindrical roller bearing Download PDFInfo
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- CN101373001B CN101373001B CN2007100550393A CN200710055039A CN101373001B CN 101373001 B CN101373001 B CN 101373001B CN 2007100550393 A CN2007100550393 A CN 2007100550393A CN 200710055039 A CN200710055039 A CN 200710055039A CN 101373001 B CN101373001 B CN 101373001B
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- collar
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- pretightening
- bearing
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Abstract
The invention relates to a method for radially pretightening a column roller bearing, and a pretightening ring. The pretightening ring (4) comprises two step-shaped outer diameters of a pretightening ring (6) with different diameters, a rollerway nest circle of the pretightening ring (7), and a concentric or non-concentric inner diameter of the pretightening ring in a cylindrical annular structure, wherein no baffle is arranged on either end of the non-concentric outer diameter of the pretightening ring and is cut in the thinnest wall area from the outer diameter of the pretightening ring (6) to the outer diameter of the pretightening ring in the direction of 45 angle, so that the pretightening ring (4) has certain adjusting room and flexibility. The rollerway nest circle of the pretightenng ring (7) pushes a roller to an outer rollaway nest and generates mutual extrusion to prevent a rolling body from sliding on the surface of the rollaway nest. By adopting the method and the pretightening ring, the roller of a column roller bearing can be effectively prevented from skidding on the rollaway nest, and early invalidation of the bearing due to the skid of the bearing can be further prevented, so that the effective service life of the column roller bearing under special working conditions can be prolonged.
Description
Technical field
The invention belongs to technical field of bearings, specially refer to a kind of radial tightening method of roller bearing.
Background technique
Rolling bearing in use needs certain radially or thrust load to produce enough frictional force between rolling element and raceway usually, guarantees that rolling element slides on raceway, makes the rolling bearing proper functioning; If this load during less than smallest radial or the arbitrary value of thrust load, can occur rolling bearing is used very disadvantageous sliding phenomenon, cause the improper destruction or the early stage timeliness of bearing.
In the practical application of rolling bearing, angular contact ball bearing, tapered roller bearing etc. has the common paired mounting of bearing of certain wrapping angle, and overcomes sliding phenomenon by applying certain thrust load; Thrust-bearing then is must guarantee certain thrust load in the requirement using process, guarantees the normal use of bearing.And other radial bearing, deep groove ball bearing, roller bearing etc. are difficult to overcome; method by the control play overcomes rolling element sliding phenomenon partial condition under, but can cause usually that unstable properties, bearing limit speed descend, heating is serious, easily fault generation such as stuck.
For roller bearing, can be by reducing the anti-sliding stops of method such as radial internal clearance, the oval raceway of employing.Reduce radial internal clearance and make bearing rolling element under any stand under load situation all be subjected to certain radial force effect, and produce that enough frictional force overcomes and raceway between slip.Oval raceway is to process the raceway with elliptical shape in the outer ring, has the proper functioning play on the long axis direction of elliptic roller track between raceway and the rolling element, and raceway has certain radial force effect to rolling element all the time on the elliptic roller track short-axis direction, and produce that enough frictional force overcomes and raceway between slip.But the effect of these methods is undesirable, and the sliding phenomenon of rolling element can not effectively overcome, and when load is vertically installed, runs up, is hit to bearing, this was very disadvantageous to roller bearing.
Summary of the invention
In order to overcome the defective that prior art exists, the invention provides a kind of method of roller bearing radial tightening, utilize this method can prevent effectively that the roller of roller bearing from skidding on raceway, and then prevent that bearing from causing early failue because of skidding, prolong the Acceptable life of roller bearing under the specific operation.
For achieving the above object, the present invention adopts following technological scheme:
The radial tightening method of described roller bearing, be to reserve certain space in the inner ring position of bearing, a kind of part that is called pre-collar is installed in this space, the tension force that produces by pre-collar self is pressed on the outer raceway rolling element, and pre-collar and inner ring carry out the fixing of circumferencial direction, make between them and do not relatively rotate, but a small amount of translation relatively can take place on diametric(al), when interior, when producing relative movement between the outer ring, in, produce frictional force between outer ring and the rolling element, can cause the rolling of rolling element when frictional force reaches certain value, avoid sliding phenomenon.
The radial tightening method of described roller bearing, by two external diameter differences be step-like pre-collar external diameter, pre-collar raceway circle and with one heart or the pre-collar internal diameter of the decentraction ring structure that is cylinder form, the wall thickness that wherein pre-collar external diameter arrives pre-collar internal diameter constitutes the pre-collar of decentraction when unequal, decentraction is not 45 ° of directions incisions with the pre-collar of rib in the thinnest zone; Pre-collar external diameter constitutes with one heart pre-collar when the wall thickness of pre-collar internal diameter equates, the two ribs of concentric pre-collar external diameter two ends band, and the pre-collar internal diameter of the two ribs of belt is distributed with the groove that quantity does not wait, these annular grooves and pre-collar external diameter decentraction, and the thinnest zone, edge is 45 ° of directions incisions.
Because adopt aforesaid technological scheme, the present invention has following superiority:
1. the radial tightening effect of pre-collar makes roller bearing can guarantee all that under any operating mode the rotation of rolling element avoids the slide relative on surface, and the reliability of bearing operation improves greatly.
2. compare with the method that reduces the anti-sliding stop of radial internal clearance, make the pretightening force size keep within the specific limits owing to having self-adjusting function, both guaranteed the normal rotation of rolling element, avoided again because the bearing stuck phenomenon that factors such as the temperature difference, distortion cause.
3. compare with the method that adopts the anti-sliding stop of oval raceway, simplicity of design, difficulty of processing is little, and quality of product is more stable and cost is lower.
Description of drawings
Fig. 1 is the structural representation of roller bearing assembling radial tightening circle;
Fig. 2 is not with rib radial tightening coil structures schematic representation;
Fig. 3 is not with rib radial tightening circle cut-out direction schematic representation;
Fig. 4 is the two rib radial tightening coil structures schematic representation of band;
Fig. 5 is the two rib radial tightening circle cut-out direction schematic representation of band;
Among the above-mentioned figure: the 1-bearing outer ring; The 2-bearing inner race; The 3-rolling element; The pre-collar of 4-; The 5-retainer; The pre-collar external diameter of 6-; The pre-collar raceway circle of 7-; The pre-collar internal diameter of 8-; The two ribs of 9-.
Embodiment
The radial tightening method of roller bearing of the present invention is to be that certain space is reserved in inner ring position at bearing, a kind of part that is called pre-collar is installed in this space, the tension force that produces by pre-collar self is pressed on the outer raceway rolling element, and pre-collar and inner ring carry out the fixing of circumferencial direction, make between them and do not relatively rotate, but a small amount of translation relatively can take place on diametric(al), when interior, when producing relative movement between the outer ring, in, produce frictional force between outer ring and the rolling element, can cause the rolling of rolling element when frictional force reaches certain value, avoid sliding phenomenon.
Shown in Fig. 2,3,4,5: the pre-collar internal diameter (8) that the pre-collar (4) of roller bearing of the present invention is step-like pre-collar external diameter (6), pre-collar raceway circle (7) and concentric or decentraction by two external diameter differences is the ring structure of cylinder and forms, wherein rib is not with at pre-collar external diameter (6) two ends of decentraction, be 45 ° of directions to pre-collar internal diameter (8) zone that wall thickness is the thinnest at pre-collar external diameter (6) and cut, make pre-collar (4) have certain adjustment space and elasticity.Pre-collar raceway circle (7) is pushed roller to outer raceway during work, and produces mutual extrusion, realizes the purpose that prevents that rolling element from sliding in raceway face.
Concentric pre-collar external diameter (6) two ends band pair ribs (9) are with the pre-collar internal diameter (8) of two ribs (9) to be distributed with the groove that quantity does not wait, these annular grooves and pre-collar external diameter (6) decentraction, and the thinnest zone, edge is 45 ° of directions incisions.Make pre-collar (4) have certain adjustment space and elasticity.Pre-collar raceway circle (7) is pushed roller to outer raceway during work, and produces mutual extrusion, realizes the purpose that prevents that rolling element from sliding in raceway face.
Claims (2)
1. the radial tightening method of a roller bearing, it is characterized in that: certain space is reserved in the inner ring position at bearing, a kind of part that is called pre-collar is installed in this space, the tension force that produces by pre-collar self is pressed on the outer raceway rolling element, and pre-collar (4) is carried out the fixing of circumferencial direction with inner ring (2), make between them and do not relatively rotate, but a small amount of translation relatively can take place on diametric(al), when interior, when producing relative movement between the outer ring, in, produce frictional force between outer ring and the rolling element, can cause the rolling of rolling element when frictional force reaches certain value, avoid sliding phenomenon.
2. the radial tightening method of a kind of roller bearing as claimed in claim 1, it is characterized in that: pre-collar (4) by two external diameter differences be step-like pre-collar external diameter (6), pre-collar raceway circle (7) and in advance collar internal diameter (8) ring structure that is cylinder form, the wall thickness that wherein pre-collar external diameter (6) arrives pre-collar internal diameter (8) constitutes the pre-collar of decentraction (4) when unequal, decentraction is not 45 ° of directions incisions with the pre-collar (4) of rib in the thinnest zone; Pre-collar external diameter (6) constitutes with one heart pre-collar (4) when the wall thickness of pre-collar internal diameter (8) equates, the two ribs of concentric pre-collar external diameter two ends band, and the pre-collar internal diameter (8) of the two ribs (9) of belt is distributed with the groove that quantity does not wait, these annular grooves and pre-collar external diameter (6) decentraction, and the thinnest zone, edge is 45 ° of directions incisions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100550393A CN101373001B (en) | 2007-08-23 | 2007-08-23 | Radial pre-tightening method and pre-tightening ring of cylindrical roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100550393A CN101373001B (en) | 2007-08-23 | 2007-08-23 | Radial pre-tightening method and pre-tightening ring of cylindrical roller bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101373001A CN101373001A (en) | 2009-02-25 |
| CN101373001B true CN101373001B (en) | 2010-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100550393A Active CN101373001B (en) | 2007-08-23 | 2007-08-23 | Radial pre-tightening method and pre-tightening ring of cylindrical roller bearing |
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| Country | Link |
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| CN (1) | CN101373001B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680716B (en) * | 2017-01-20 | 2019-01-08 | 浙江大学 | A method of the magneto bearing failure diagnosis based on position-sensor-free |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089693A (en) * | 1992-10-26 | 1994-07-20 | 托林顿公司 | Axially restrained and balanced eccintric bearing |
| CN2418299Y (en) * | 1999-05-20 | 2001-02-07 | 沈阳轴承厂 | Split beearing |
| CN1975186A (en) * | 2001-03-09 | 2007-06-06 | 汉森传送国际股份有限公司 | Full complement taper roller bearing |
-
2007
- 2007-08-23 CN CN2007100550393A patent/CN101373001B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089693A (en) * | 1992-10-26 | 1994-07-20 | 托林顿公司 | Axially restrained and balanced eccintric bearing |
| CN2418299Y (en) * | 1999-05-20 | 2001-02-07 | 沈阳轴承厂 | Split beearing |
| CN1975186A (en) * | 2001-03-09 | 2007-06-06 | 汉森传送国际股份有限公司 | Full complement taper roller bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101373001A (en) | 2009-02-25 |
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Effective date of registration: 20161228 Address after: 324400 Yongtai Road, Longyou Industrial Park, Zhejiang, No. 33 Patentee after: ZG iron bearing Co., Ltd. Address before: 471039 Middle Road, Henan, Jilin, No. 1, No. Patentee before: Luoyang Bearing Science and Technology Co., Ltd. |