CN102261389A - Novel bearing pre-tightening device - Google Patents
Novel bearing pre-tightening device Download PDFInfo
- Publication number
- CN102261389A CN102261389A CN2010101930692A CN201010193069A CN102261389A CN 102261389 A CN102261389 A CN 102261389A CN 2010101930692 A CN2010101930692 A CN 2010101930692A CN 201010193069 A CN201010193069 A CN 201010193069A CN 102261389 A CN102261389 A CN 102261389A
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- China
- Prior art keywords
- bearing
- screw
- transmission shaft
- boss shoulder
- bearing seat
- 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.)
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Abstract
The invention discloses a novel bearing pre-tightening device which comprises a transmission shaft, wherein the transmission shaft is installed in the inner hole of a bearing seat through a bearing, a boss shoulder is installed in the inner hole of the bearing seat, and the boss shoulder is contacted with the outer ring of the bearing seat but not contacted with the inner ring of the bearing; a space formed among the boss shoulder, a bearing cover and the bearing seat is filled with liquid plastic; and a bearing cover fixing bolt is used for fixing the bearing cover on the bearing seat, a screw is screwed into the screwed hole of the end face of the bearing cover, thereby screwing the screw so as to compress the liquid plastic, and a locknut is used for locking the screw.
Description
Technical field
The present invention relates to a kind of bearing pre-tightened device, particularly a kind of novel bearing pre-tightening apparatus belongs to the mechanical parts technical field of structures.
Background technique
Rolling bearing in the process of assembling, for make bearing movable steadily, reduce rotatable parts vibration, improve the life-span of running gear and the running accuracy that improves moving element, generally all to carry out pretension to the axial force of bearing.At present, the method of preloaded bearing generally is with bolt bearing cap to be fixed on above the bearing support, between bearing cap and bearing support, increase or reduce pad, the boss shoulder that makes bearing cap is strengthened the outer ring of bearing or inner ring impacting force or is weakened, the bearing pre-tightened device of this structure, once after Bearing Installation finishes, its axial pre tightening force is changeless, but machinery is in the process of running, because insufficient lubrication, component wear, overburdening, misoperation, and some other unusual reason, the capital makes moving element produce certain heat, if the heat that transmission shaft is accepted is excessive, transmission shaft is expanded excessively, elongation, still, because the two ends of transmission shaft are subjected to the constraint of bearing, as a result, just might be stuck even burn bearing with bearing, cause entire equipment to run well.
Summary of the invention
The objective of the invention is to: a kind of novel bearing pre-tightening apparatus is provided, overcomes in the structure of existing bearing pre-tightened device,, cause the defective that bearing is stuck even burn, make entire equipment to run well easily because pretightening force is fixing inconvenience.
The present invention realizes that the technological scheme that above-mentioned purpose adopts is: a kind of novel bearing pre-tightening apparatus, it is by the bearing pre-tightened device one transmission shaft to be arranged, transmission shaft by Bearing Installation in the endoporus of bearing support, one boss shoulder is installed in the endoporus of bearing support, the boss shoulder contacts and does not contact with bearing inner race with the bearing support outer ring, is injected with liquid plastics in the space that forms between boss shoulder, bearing cap and the bearing support; The bearing cap fixing bolt is fixed on bearing cap on the bearing support, and screw is screwed in the tapped hole of bearing cap end face, turns screw screw is compressed liquid plastics, and is by locking nut that screw is locked.
Beneficial effect: the present invention is owing to be converted into decrement to liquid plastics with the elongation that is heated of transmission shaft, so, can play compensating action, overcome in the structure of existing bearing pre-tightened device, because pretightening force is fixing inconvenience, causes the defective that bearing is stuck even burn, make entire equipment to run well easily.
Description of drawings
Below in conjunction with accompanying drawing structure of the present invention is described further.
Shown in the figure: 1, bearing cap; 2, locking nut; 3, screw; 4, liquid plastics; 5, boss shoulder; 6, bearing; 7, transmission shaft; 8, bearing cap fixing bolt; 9, bearing support.
Embodiment
The bearing pre-tightened device has a transmission shaft (7), transmission shaft (7) is installed in the endoporus of bearing support (9) by bearing (6), one boss shoulder (5) is installed in the endoporus of bearing support (9), boss shoulder (5) contacts and does not contact with bearing inner race with bearing support (9) outer ring, is injected with liquid plastics (4) in the space that forms between boss shoulder (5), bearing cap (1) and the bearing support (9); Bearing cap fixing bolt (8) is fixed on bearing cap (1) on the bearing support (9), screw (3) is screwed in the tapped hole of bearing cap (1) end face, turn screw (2) screw (3) is compressed liquid plastics (4), by locking nut (2) that screw (3) is locked.
Claims (1)
1. novel bearing pre-tightening apparatus, it is characterized in that: transmission shaft (7) is installed in the endoporus of bearing support (9) by bearing (6); Be injected with liquid plastics (4) in the space that forms between boss shoulder (5), bearing cap (1) and the bearing support (9); Bearing cap fixing bolt (8) is fixed on bearing cap (1) on the bearing support (9), and screw (3) is screwed in the tapped hole of bearing cap (1) end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101930692A CN102261389A (en) | 2010-05-28 | 2010-05-28 | Novel bearing pre-tightening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101930692A CN102261389A (en) | 2010-05-28 | 2010-05-28 | Novel bearing pre-tightening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102261389A true CN102261389A (en) | 2011-11-30 |
Family
ID=45008169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101930692A Pending CN102261389A (en) | 2010-05-28 | 2010-05-28 | Novel bearing pre-tightening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102261389A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206462A (en) * | 2013-04-12 | 2013-07-17 | 株洲高精传动技术有限公司 | Bearing pre-tightening device |
| CN104500587A (en) * | 2014-12-18 | 2015-04-08 | 重庆赛力盟电机有限责任公司 | Axial pretensioner of hydroturbine or motor bearing |
| CN106224394A (en) * | 2016-09-06 | 2016-12-14 | 沃德传动（天津）股份有限公司 | A kind of bearing assembly and the pre-tightening apparatus of bearing |
-
2010
- 2010-05-28 CN CN2010101930692A patent/CN102261389A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206462A (en) * | 2013-04-12 | 2013-07-17 | 株洲高精传动技术有限公司 | Bearing pre-tightening device |
| CN103206462B (en) * | 2013-04-12 | 2015-08-19 | 株洲高精传动技术有限公司 | Bearing pre-tightening device |
| CN104500587A (en) * | 2014-12-18 | 2015-04-08 | 重庆赛力盟电机有限责任公司 | Axial pretensioner of hydroturbine or motor bearing |
| CN106224394A (en) * | 2016-09-06 | 2016-12-14 | 沃德传动（天津）股份有限公司 | A kind of bearing assembly and the pre-tightening apparatus of bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111130 |