CN102221044B - Rolling bearing system - Google Patents
Rolling bearing system Download PDFInfo
- Publication number
- CN102221044B CN102221044B CN201010228950.1A CN201010228950A CN102221044B CN 102221044 B CN102221044 B CN 102221044B CN 201010228950 A CN201010228950 A CN 201010228950A CN 102221044 B CN102221044 B CN 102221044B
- Authority
- CN
- China
- Prior art keywords
- rolling bearing
- inner part
- bearing system
- flameproof gap
- exterior part
- 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
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 35
- 238000007789 sealing Methods 0.000 claims description 15
- 239000004519 grease Substances 0.000 claims description 8
- 239000000314 lubricant Substances 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 229910000906 Bronze Inorganic materials 0.000 claims description 2
- 239000010974 bronze Substances 0.000 claims description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical group [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910000928 Yellow copper Chemical group 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
The present invention relates to a kind of rolling bearing system, its have at least one band outer raceway (24,26), outside by exterior part (36) around outer ring (16,18) and at least one interior raceway around inner part (52) (28,30), wherein, inner part (52) coordinate with axle (10) and wherein inner part (52) and exterior part (36) axially exceeding interior raceway (28,30) and outer ring (16,18), thereby between inner part (52) and exterior part (36), form flameproof gap (62). Already advised, flameproof gap (62) be at least substantially in line extend and cylindrical.
Description
Technical field
The present invention relates to a kind of rolling bearing system, its have at least one with outer raceway, outside by exterior part around outer ring and at least one is with interior raceway and around the inner ring of inner part.
Background technology
From prior art known for make axle explosion-proof through the rolling bearing system of the shell of shell, particularly motor. The explosion-proof producing by flameproof gap can make this motor work in the scope of gas that has explosion danger. Flameproof gap prevents from wearing and in shell structure region, occurring that electric spark lights this gas due to rolling bearing.
For preventing on the one hand owing to selecting flameproof gap too much to transmit spark and preventing from the other hand in the region of flameproof gap, because the starting of the wall of flameproof gap forms spark, must manufacturing with especially little tolerance the parts of formation flameproof gap. Already showed, even if the width of flameproof gap or gap degree are manufacturing after fire-proof motor controlledly, between the transport of motor or installation period, still there will be distortion, distortion can cause the wall collision of flameproof gap or rub. In addition be well known that, flameproof gap is constructed in the mode of lamination seal under angled shape. In this design, for correctly determining the size of flameproof gap, not only need accurately to control footpath tolerance upwards, and need accurately Control Shaft tolerance upwards.
Summary of the invention
Technical problem to be solved by this invention particularly in, a kind of rolling bearing system with the flameproof gap that its width can accurate adjustment is provided, it can simply and inexpensively be manufactured, and insensitive to the tolerance of other parts.
This technical problem solves by a kind of rolling bearing system, its have at least one band outer raceway, outside by exterior part around outer ring and the interior raceway of at least one band, around the inner ring of inner part. At this, inner part is bearing on axle, and inner part and exterior part exceed inner ring and outer ring in the axial direction. Between inner part and exterior part, form flameproof gap.
The present invention especially advises, flameproof gap is at least substantially in line and extends and cylindrical. The rolling bearing system with single-row or multiple row rolling bearing, inner ring and outer ring can provide as preassembled assembly like this, and this assembly has the flameproof gap that presets its width. The explosion-proof axle being formed by axle itself with the wall of flameproof gap is worn compared with shell structure, can eliminate the impact of this axle tolerance. Compared with mazy flameproof gap, under identical precision, can obviously reduce manufacturing cost. Inner part and/or exterior part have at least one for delivery of and/or discharge in the boring situation of lubricant, although efficient explosionproof and without opening flameproof gap, it is lubricated that bearing unit still can (again).
In addition propose, rolling bearing system is equipped at least one can be communicated with exterior part the grease cylinder for delivery of lubricant. As alternative, grease cylinder can be communicated with inner part. If rolling bearing system comprises the mechanism for adjusting flameproof gap width, particularly wedge mechanism, this rolling bearing system can accurately be adjusted according to rated value so.
In addition propose, inner part holds yielding region and is placed on bolster to be slidably matched, not too hold yielding region with interference fit sleeve on bolster. When not being with interference fit in the axial region of inner part at flameproof gap, but while coordinating with bolster with matched in clearance, the impact of axle tolerance especially can be excluded.
In bearing damage or there is other problem in the situation that, in the time that at least one wall of flameproof gap is made up of bronze, brass or other non-ferrous metal, can forms and jeopardously promptly move by this flameproof gap no-spark.
If rolling bearing system comprises at least one seal in flameproof gap region, explosion-proof can be further enhanced and avoid dirt to enter rolling bearing and maybe can prevent that lubricant from flowing out so. If inner part therein on side and/or exterior part on its lateral surface, there is sliding coating, rolling bearing system can be advantageously used for floating bearing so.
Brief description of the drawings
Other features and advantages of the present invention are by drawing in the description for the embodiment of the present invention by accompanying drawing below. Accompanying drawing and comprise the features of being introduced with concrete combination in a large number by accompanying drawing for the explanation of detailed description of the invention. Those skilled in the art are in order to realize the utilization for inventive concept in some special applications, also can be single or apply these features with other combinations.
In accompanying drawing:
Fig. 1 illustrates the rolling bearing system in the first design of the present invention, and it has the ball bearing of biserial, an inner part and an exterior part;
Fig. 2 shows the designed rolling bearing system with flameproof gap of scheme by another kind of the present invention with predetermined flameproof gap; And
Fig. 3 shows the rolling bearing system according to another kind of design of the present invention with the mechanism for adjusting flameproof gap.
Detailed description of the invention
Fig. 1 shows a kind of for the rolling bearing system through electric motor explosion-proof shell 12 by axle 10. Rolling bearing system comprises having two-row ball bearing 14 two outer rings 16,18 and two inner rings 20,22, that arrange with O shape. Outer ring 16,18 comprises respectively an outer raceway 24,26, and inner ring 20,22 comprises respectively an interior raceway 28,30. Two ball row of raceway 24,26,28,30 interior operations 32,34.
Outer ring 16,18 is surrounded by exterior part 36 on circumference, and this exterior part is equipped with sliding coating and packs in the respective openings in motor casing 12 on 38 to the outside in its footpath. Lubricant can be flowed into or flow out from ball bearing 14 by two borings 40,42. Exterior part 36 comprises the main body 44 with cylindrical bore 46, hole in-built enter ball bearing 14. In boring 46, pack the sealing shroud 48 of exterior part 36 into, in sealing shroud, be processed with grease and carry or tap 50. Boring 40 and grease sprocket hole 50 can utilize during operation sealing bolt sealing or grease sprocket hole 50 to be communicated with grease cylinder (not shown) or be integrated with it.
The inner ring 20,22 of ball bearing 14 is sleeved on the inner part 52 of sleeve shaped, and 52 sleeves of this inner part are on axle 10. Inner part 52 comprises the main body 54 with cylinder blanket face 56 and flange 58, is set with the inner ring 20,22 of ball bearing 14 on described shell surface, and the inner ring 22 of ball bearing 14 is close on described flange 58. The gripping sleeve 60 of inner part 52 clamps inner ring 20,22 together with described flange 58. The footpath of the cylindrical shell shape of gripping sleeve 60 faces with each other with the radially inner face of the cylindrical shell shape of sealing shroud 48 to the outside and surrounds the flameproof gap 62 of an about 0.1mm of width.
Rolling bearing system is on the flange 63 that is axially close to shell 12 and by pressing to flange 63 with the bolted seal cover 65 of shell 12.
The flameproof gap 62 being formed by the sealing shroud 48 of exterior part 36 and the gripping sleeve 60 of inner part 52 straight line in the axial direction of rolling bearing system extends and is cylindrical. The main body 54 of inner part 52 or inner part 52 is sleeved on axle 10 with interference fit or interference fits. The main body 54 of inner part 52 abuts on the flange 64 of axle 10. In the admissible design of one of the present invention, in the region of flameproof gap 62, seal can be set.
Fig. 2 and 3 illustrates another kind of design of the present invention. For avoiding repetition, explanation be below substantially limited in difference embodiment illustrated in fig. 1 on, wherein, consult the explanation to Fig. 1 in identical characteristic aspect. Similarly feature arranges identical Reference numeral.
Fig. 2 illustrates a kind of alternative design of the present invention, and it has single-row ball bearing 14 and an inner part 52, and the latter is arranged on axle 10 with interference fits or interference fit 74. The inner ring 20 by rolling bearing 14 around inner part 52 and exterior part 36 around the outer ring 16 of this rolling bearing 14 between form a predetermined flameproof gap 62 of its width. Inner part 52 abuts on the flange 64 of axle 10. Most of flameproof gap 62 is observed after flange 64 from ball bearing 14. After flange 64, inner part 52 72 is sleeved on axle 10 with being slidably matched of relaxing, thus inner part 52 in this region not can due to be out of shape the coordinating of error that have of axle 10. Can avoid thus flameproof gap 62 because the tolerance of axle 10 narrows. Can consider another kind of design of the present invention, that is, inner ring 20 and the inner part 52 of ball bearing 14 are designed to one.
Fig. 3 illustrates another kind of design of the present invention, has the mechanism 66 for adjusting flameproof gap 62 width. Exterior part 36 comprises main body 44 and sealing shroud 48, and the footpath of sealing shroud is to the outside to upper conical the attenuating of direction of ball bearing 14. Between main body 44 and sealing shroud 48, arrange one with the taper outside of sealing shroud 48 correspondingly at its upper conical ring attenuating 68 of inner face radially, its axial location can be adjusted by bolt 70. By encircling the change of 68 axial locations, therefore the diameter that can change sealing shroud 48 also changes the width of flameproof gap 62. Sealing shroud 48 can have gap that one or more distributes on its circumference, axially extended, these gaps can make diameter that this change occurs.
In design of the present invention, wall of flameproof gap 62 or two walls can be made up of as brass or copper non-ferrous metal. The in the situation that of bearing damage, also can realize thus urgent operation and can avoid spark to form.
List of numerals
10 axles
12 shells
14 ball bearings
16,18 outer rings
20,22 inner rings
24,26 outer raceways
28,30 interior raceways
32,34 ball row
36 exterior parts
38 outsides
40,42 holes
44 main bodys
46 holes
48 sealing shrouds
50 grease sprocket holes
52 inner parts
54 main bodys
56 surfaces
58 flanges
60 gripping sleeves
62 flameproof gaps
64 flanges
66 mechanisms
68 rings
70 bolts
72 interference fits
74 are slidably matched.
Claims (10)
1. a rolling bearing system, its have at least one outer ring (16,18) and at least one inner ring (20,22), wherein, described outer ring (16,18) are with outer raceway (24,26) and outside by an exterior part (36)Around, described inner ring (20,22) with interior raceway (28,30) and around an inner part (52), wherein,It is upper that this inner part (52) is bearing in an axle (10), and wherein, described inner part (52) and exterior part (36)Axially exceeding described interior raceway (28,30) and outer ring (16,18), thus described inner part (52) with outsideBetween parts (36), form flameproof gap (62), it is characterized in that, described flameproof gap (62) at least substantiallyStraight line extends and is cylindrical, and wherein, exterior part (36) has sealing shroud (48), therefore in sealing shroud (48)And between inner part (52), form flameproof gap (62).
2. by rolling bearing system claimed in claim 1, it is characterized in that described inner part (52)And/or described exterior part (36) have at least one for delivery of and/or discharge lubricant boring (40,42,50)。
3. by rolling bearing system claimed in claim 2, it is characterized in that at least one and described outsideParts (36) connect the grease cylinder for delivery of lubricant.
4. by the described rolling bearing system of one of aforementioned claim, it is characterized in that one for adjustingThe mechanism (66) of whole flameproof gap (62) width.
5. by rolling bearing system claimed in claim 1, it is characterized in that described inner part (52)In the region of described interior raceway (28,30), be fixed on interference fit on described axle (10).
6. by rolling bearing system claimed in claim 4, it is characterized in that described inner part (52)At least one with the overlapping region of flameproof gap (62) in be bearing in to be slidably matched on described axle (10).
7. by rolling bearing system claimed in claim 1, it is characterized in that described inner part (52)And/or described exterior part (36) is at least coloured by one at least partly in the region of described flameproof gap (62)Metal forms.
8. by rolling bearing system claimed in claim 1, it is characterized in that described flameproof gap (62)In region, there is at least one seal.
9. by rolling bearing system claimed in claim 1, it is characterized in that described inner part (52)Therein on side and/or described exterior part (36) on its lateral surface, there is sliding coating.
10. by rolling bearing system claimed in claim 1, it is characterized in that described inner part (52)And/or described exterior part (36) at least in the region of described flameproof gap (62) at least partly by bronze or yellowCopper forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010228950.1A CN102221044B (en) | 2010-04-19 | 2010-04-19 | Rolling bearing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010228950.1A CN102221044B (en) | 2010-04-19 | 2010-04-19 | Rolling bearing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102221044A CN102221044A (en) | 2011-10-19 |
| CN102221044B true CN102221044B (en) | 2016-05-04 |
Family
ID=44777684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010228950.1A Expired - Fee Related CN102221044B (en) | 2010-04-19 | 2010-04-19 | Rolling bearing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102221044B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296630B (en) * | 2018-12-04 | 2023-09-12 | 四川宏华石油设备有限公司 | Radial sliding bearing |
| US11359672B2 (en) * | 2019-12-10 | 2022-06-14 | Koch Engineered Solutions, Llc | Bearing assembly for rotary electric machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87215202U (en) * | 1987-12-17 | 1988-12-14 | 衡阳市电机厂 | Constant magnetic generator of explosion-proof type |
| CN2038299U (en) * | 1988-12-09 | 1989-05-24 | 陕西直线电机机械设备公司 | Explosion-proof cylindrical d.c. generator |
| DE19908158A1 (en) * | 1999-02-25 | 2000-08-31 | Schaeffler Waelzlager Ohg | Bearing unit for drive shaft of car comprises ball bearings held between recesses in shaft and second set of recesses on housing fitted over them with ring which can be moved to adjust degree of play of at least one of ball bearings |
| CN2574263Y (en) * | 2002-10-24 | 2003-09-17 | 王军珲 | Sliding shaft-mounted conductive swivel joint |
| CN2717522Y (en) * | 2004-08-05 | 2005-08-17 | 中信重型机械公司 | Axial adjustable conic sealing device for hollow axle and feed inlet of mine milling machine |
-
2010
- 2010-04-19 CN CN201010228950.1A patent/CN102221044B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87215202U (en) * | 1987-12-17 | 1988-12-14 | 衡阳市电机厂 | Constant magnetic generator of explosion-proof type |
| CN2038299U (en) * | 1988-12-09 | 1989-05-24 | 陕西直线电机机械设备公司 | Explosion-proof cylindrical d.c. generator |
| DE19908158A1 (en) * | 1999-02-25 | 2000-08-31 | Schaeffler Waelzlager Ohg | Bearing unit for drive shaft of car comprises ball bearings held between recesses in shaft and second set of recesses on housing fitted over them with ring which can be moved to adjust degree of play of at least one of ball bearings |
| CN2574263Y (en) * | 2002-10-24 | 2003-09-17 | 王军珲 | Sliding shaft-mounted conductive swivel joint |
| CN2717522Y (en) * | 2004-08-05 | 2005-08-17 | 中信重型机械公司 | Axial adjustable conic sealing device for hollow axle and feed inlet of mine milling machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102221044A (en) | 2011-10-19 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160504 |