CN202883735U - Cylindrical roller bearing retainer - Google Patents
Cylindrical roller bearing retainer Download PDFInfo
- Publication number
- CN202883735U CN202883735U CN 201220486410 CN201220486410U CN202883735U CN 202883735 U CN202883735 U CN 202883735U CN 201220486410 CN201220486410 CN 201220486410 CN 201220486410 U CN201220486410 U CN 201220486410U CN 202883735 U CN202883735 U CN 202883735U
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- CN
- China
- Prior art keywords
- cylindrical roller
- right support
- left socle
- pillar
- roller bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a cylindrical roller bearing retainer which comprises a left support, a right support and struts; the left support is of a circular structure; tooth-shaped beams are uniformly distributed on one end surface at one side of the left support; the opposite surfaces of the adjacent tooth-shaped beams are circular arc surfaces with equal diameter; the diameters of the circular arc surfaces are slightly larger than the diameters of cylindrical rollers; strut holes are uniformly distributed in the left support; the right support and the left support are same in structure, and are arranged symmetrically; the struts are fixed in the strut holes of the left support and the right support, so that the left support and the right support are integrated. The cylindrical roller bearing retainer improves the load capacity of the bearing, is high in strength, simple in structure, easy to machine and low in cost has a long service life.
Description
Technical field
The utility model belongs to the rolling bearing field, particularly a kind of solid cage of high load capacity roller bearing.
Background technique
The solid cage of single row roller bearing, Biserial cylindrical roller bearing and multiple row roller bearing has dark pocket hole basket cage, dark pocket hole bidentate comb-shaped retainer, the dark pocket of combined riveting formula hole retainer and pillar welding type retainer etc. multiple.There is following shortcoming in it: the dress roller pocket hole of (1), all solid cages is dark pocket hole, although leave the gap between the arc-shaped surface in dark pocket hole and the rolling surface of cylindrical roller, but when bearing operation, produce inevitably sliding friction between the two, the gap that the lubricating grease of bearing inside can not waltz through between the arc-shaped surface in the rolling surface of cylindrical roller and dark pocket hole enters inner ring raceway surface and outer ring raceway surface, causes bearing lubrication bad.Consequently the rolling surface of cylindrical roller is especially produced easily by that part of the arc-shaped surface in dark pocket hole parcel and wear and tear, pulls, scratches until pit, pit and fatigue flake occur, and the raceway face of the raceway face of bearing inner race, bearing outer ring also fatigue flake occurs shifting to an earlier date because can not get good lubrication simultaneously.(2), the pocket depth of pocket hole bidentate comb-shaped retainer has wrapped up 65%～75% of roller total length deeply.When bearing starts, accelerates, slows down and withstands shocks load; retainer from the root fracture of profile of tooth beam, causes the unexpected stuck scaling loss of bearing easily, produces abominable stopping accident; this situation is frequent occurrence on the rolling mill roll bearing, is the very difficult problem of headache of Steel-rolling Industry.(3), the width owing to the profile of tooth beam between adjacent two dark pocket holes on the retainer must have enough mechanical strengths, so the profile of tooth beam need to have enough width, just so that the roller quantity of packing in the bearing race reduces, and the minimizing of roller quantity namely means dynamic load rating value and the rating life of having reduced bearing for this.(4), pocket hole basket cage, dark pocket hole bidentate comb-shaped retainer adopt the manufacturing of Cuprum alloy (HPb59-1) material more deeply, and China is the country of copper ore resource poorness, employing copper product manufacturing retainer is not only wasted scarce resource but also the processing and utilization rate is low.(5), pillar welding type retainer, although increased the quantity of roller in the bearing, that is increased the dynamic load rating value of bearing, but must the machining center through hole on the longitudinal center line of cylindrical roller, pillar pass behind the roller centre through hole with left and right two ring washers on unthreaded hole and tapped hole be welded to connect and be threaded.The rolling mill roll bearing of the especially metallurgical Steel-rolling Industry of bearing, non-ferrous metal calendering industry is worked under extremely abominable working condition, not only carries stress alternation, also is subject to inevitably the effect of very big impact load.The accidents such as at this moment cylindrical roller meeting under the alternating stress effect cracks at the inner circumferential surface of central through bore, cracking cause bearing to be scrapped in advance.In order to satisfy bearing requirements of one's work under the impact load condition, cylindrical roller is commonly used carburizing bearing steel (G20Cr2Ni4A) manufacturing, needs to carry out carburizing and heat treatment process behind the machining center through hole of cylindrical roller center.In the cooling procedure of carburizing heat treatment process, because the diameter of central through bore is little, poor cooling performance, heat dissipation rate is slow, and its top layer and time top layer produce very harmful Carbide network tissue easily.During bearing operation, cylindrical roller is under the alternating stress effect, and these harmful Carbide network tissues can cause cylindrical roller to produce fracture, CRACKING ACCIDENT.For shape and positional accuracy and the surface roughness that improves the cylindrical roller central through bore, need the center through-hole surfaces is carried out grinding, yet the diameter of central through bore is little, when grinder wheel runs up the grinding center through hole, cool off on the surface of grinding coolant central through bore extremely difficult to get access, this just causes the central through bore surface to produce Grinding cracks and burn easily, these crackles and burn can extend gradually when the cylindrical roller stand under load and enlarge and even cracking, cause bearing to be scrapped in advance, produce serious equipment accident.Simultaneously, an end of pillar is processed with screw thread, so that the tapped hole of being connected with ring washer connects, but need to process in advance tool withdrawal groove during machining screw on the pillar.Because the existence that stress is concentrated, tool withdrawal groove can cause pillar to crack from the bottom of tool withdrawal groove in the running.The other end of pillar is optical axis, with again welding after unthreaded hole on the ring washer adopts the mode of Spielpassung to be connected, the variation of the factors such as the vibration when turn round along with cylindrical roller in gap between the two, acceleration, deceleration, impact can cause the face of weld ablation, thereby pillar is scrapped, affect bearing and remain in operation, can produce abominable equipment failure when serious, cause great steel rolling production loss.
Summary of the invention
In order to overcome the shortcoming of prior art, the utility model provides a kind of cylinder roller bearing retainer, and it has improved the load capacity of bearing, and intensity is high, and is simple in structure, easily manufacturing, and the life-span is long, and cost is low.
The technical scheme in the invention for solving the technical problem is: it comprises left socle, right support and pillar; Left socle is cirque structure, is evenly equipped with the profile of tooth beam on the end face of a side, and the opposing side of adjacent teeth ellbeam is the identical arc surface of diameter, and the diameter of arc surface is slightly larger than the diameter of cylindrical roller, uniform pillar hole on the left socle; Right support is identical with the left socle structure, is arranged symmetrically with; Pillar is fixed in the pillar hole of left socle and right support, and left socle and right support are become one.
1), the axial height of the axial height in shallow pocket hole that is profile of tooth beam only is 5～15% of cylindrical roller length the utlity model has following advantages:.2), the minimum width of profile of tooth beam is less, that is under the diameter that keeps cylindrical roller, length permanence condition, the cylindrical roller of the greater number of packing into, dynamic load rating and the rating life of having improved bearing.3), the area of contact between the arc-shaped surface in the rolling surface of cylindrical roller and shallow pocket hole is little, sliding friction is little; The space that lubricating grease can waltz through between per two adjacent cylindrical rollers is lubricated bearing inner race raceway face and outer ring raceway surface, form useful lubricant oil rete, reduce and eliminate each part of bearing fretting wear, scratch, pull, the chance of temperature rise etc., improve limit speed, greasy property and the wear-resisting property of bearing.4), the retainer structure is slim and graceful, the profile of tooth beam in shallow pocket hole is because the axial height size is 5～15% of cylindrical roller length only, thereby has good rigidity, the reliability of retainer obviously improves, and has eliminated the hidden danger of profile of tooth beam from fracture of root.5), cylindrical roller is without central through bore, avoids the defective workmanship of central through bore in carburizing heat treatment and Grinding Process, improves the reliability of cylindrical roller.6), pillar adopts plain shaft structure, its two ends all with left and right support on pillar hole adopt the mode of interference fit to be connected after again welding, thoroughly elimination owing to be threaded, the accident potential when Spielpassung is welded to connect.7, the left and right support of retainer and pillar all adopt ferrous metal manufacturing, cancel copper product (HPb59-1), have reduced the manufacture cost of retainer.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the utility model plan view;
Fig. 2 is the A-A sectional view among the utility model Fig. 1;
Fig. 3 is the practical state sectional view of the utility model;
Fig. 4 is the B-B sectional view among the utility model Fig. 3.
Embodiment
As shown in drawings, the utility model comprises left socle 1, right support 4 and pillar 3.Left socle 1 is cirque structure, be evenly equipped with profile of tooth beam 2 on the end face of one side, the opposing side of adjacent teeth ellbeam 2 is the identical arc-shaped surface of diameter 6, form the shallow pocket hole that cylindrical roller 9 is installed between the adjacent arc surface, the diameter of arc surface 6 is slightly larger than the diameter of cylindrical roller 9, the uniform pillar hole in profile of tooth beam below of left socle 1.Right support 4 is identical with left socle 1 structure, is arranged symmetrically with.Pillar 3 interference are fixed in the pillar hole of left socle 1 and right support 4, and left socle 1 and right support 4 are become one.In order to improve intensity, the two ends of pillar 3 and left socle 1 and right support 4 are welded to connect.
The depth S of described profile of tooth beam 2 arc surfaces is 5～15% of cylindrical roller 9 length.
The thickness H of described profile of tooth beam 2 is 30～50% of cylindrical roller 9 diameters.
The material of described left socle 1, right support 4 and pillar 3 is ferrous metal.
During installation, a plurality of cylindrical rollers 9 are embedded respectively in the shallow pocket hole of left socle 1 and right support 4, with pillar 3 left socle 1 and right support 4 are welded and fixed.The left socle 1 that will become one, right support 4, pillar 3 and cylindrical roller 9 are packed into and are got final product between the inside and outside circle 8,7 of bearing.
Claims (4)
1. cylinder roller bearing retainer, it is characterized in that: it comprises left socle (1), right support (4) and pillar (3); Left socle (1) is cirque structure, be evenly equipped with profile of tooth beam (2) on the end face of one side, the opposing side of adjacent teeth ellbeam (2) is the identical arc surface of diameter (6), the diameter of arc surface (6) is slightly larger than the diameter of cylindrical roller (9), the upper uniform pillar hole of left socle (1); Right support (4) is identical with left socle (1) structure, is arranged symmetrically with; Pillar (3) is fixed in the pillar hole of left socle (1) and right support (4), and left socle (1) and right support (4) are become one.
2. cylinder roller bearing retainer according to claim 1 is characterized in that: the degree of depth (S) of described profile of tooth beam (2) arc surface is 5～15% of cylindrical roller (9) length.
3. cylinder roller bearing retainer according to claim 1 is characterized in that: the thickness (H) of described profile of tooth beam (2) is 30～50% of cylindrical roller (9) diameter.
4. cylinder roller bearing retainer according to claim 1, it is characterized in that: the material of described left socle (1), right support (4) and pillar (3) is ferrous metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220486410 CN202883735U (en) | 2012-09-10 | 2012-09-10 | Cylindrical roller bearing retainer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220486410 CN202883735U (en) | 2012-09-10 | 2012-09-10 | Cylindrical roller bearing retainer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202883735U true CN202883735U (en) | 2013-04-17 |
Family
ID=48075166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220486410 Expired - Fee Related CN202883735U (en) | 2012-09-10 | 2012-09-10 | Cylindrical roller bearing retainer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202883735U (en) |
-
2012
- 2012-09-10 CN CN 201220486410 patent/CN202883735U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20150910 |
|
| EXPY | Termination of patent right or utility model |