CN106931045A - The main shaft bearing structure of adjustable clearance - Google Patents
The main shaft bearing structure of adjustable clearance Download PDFInfo
- Publication number
- CN106931045A CN106931045A CN201511031921.5A CN201511031921A CN106931045A CN 106931045 A CN106931045 A CN 106931045A CN 201511031921 A CN201511031921 A CN 201511031921A CN 106931045 A CN106931045 A CN 106931045A
- Authority
- CN
- China
- Prior art keywords
- main shaft
- contact ball
- angular contact
- ball bearing
- ring
- 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.)
- Pending
Links
Classifications
-
- 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
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/08—Rigid support of bearing units; Housings, e.g. caps, covers for spindles
- F16C35/12—Rigid support of bearing units; Housings, e.g. caps, covers for spindles with ball or roller bearings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mounting Of Bearings Or Others (AREA)
- Support Of The Bearing (AREA)
Abstract
The invention belongs to fuel rod auxiliary body field, the main shaft bearing structure of specific open adjustable clearance, it includes outer ring gland, tight split nut, angular contact ball bearing and inner ring shelves ring；Outer ring gland is enclosed within main shaft outside；Angular contact ball bearing, inner ring shelves ring and tight split nut are located at the outerface of spindle with being sequentially connected；The outer ring of angular contact ball bearing is connected with outer ring gland, and an outside pressure is produced when angular contact ball bearing is extruded by outer ring gland；The inner ring of angular contact ball bearing produces an inside pressure when being extruded by inner ring shelves ring.The present invention has reserved the clearance for being available for regulation, and angular contact ball bearing can be made to be in Pre strained state, had both avoided bearing wear and had improve service life, and the positional precision of main shaft is improve again.
Description
Technical field
The invention belongs to fuel rod auxiliary body field, and in particular to the main shaft bearing structure of adjustable clearance.
Background technology
In fuel rod main shaft bearing structure of the prior art, main shaft two ends are respectively equipped with 2 angular contact ball bearings,
Mounting means is identical, all use Back-to-back installation；Bearing inner race and outer ring are by even at the cost of one's life；No
The reserved clearance for being available for adjusting.That is now bearing is in not by Pre strained state, when main shaft rotates at a high speed
When main shaft can produce larger play axially and radially going up, bearing can rapidly be damaged because of excessive wear.
The content of the invention
The purpose of the present invention is to provide a kind of main shaft bearing structure of adjustable clearance.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：
The main shaft bearing structure of adjustable clearance, it include outer ring gland, tight split nut, angular contact ball bearing and
Inner ring shelves ring；Outer ring gland is enclosed within main shaft outside；Angular contact ball bearing, inner ring shelves ring and tight split nut are successively
Conjointly it is located at the outerface of spindle；The outer ring of angular contact ball bearing is connected with outer ring gland, when angular contact ball axle
An outside pressure is produced when affording the extruding of outer ring gland；The inner ring of angular contact ball bearing is subject to inner ring shelves
An inside pressure is produced during the extruding of ring；Tight split nut can be pre- to change along the locking of the axial direction of main shaft
Clamp force, to adjust the inside pressure that inner ring shelves ring acts on the inner ring of angular contact ball bearing；Main shaft outside is along axle
To being provided with 2 main shaft bearing structures of adjustable clearance that are in opposite direction, cooperating.
In the presence of the outside pressure and inside pressure, the inner ring of angular contact ball bearing and outer ring produce mistake
Move and be subjected to displacement so that bearing clearance is gradually reduced, the axial line of main shaft is to the equipment desired axis after assembling
Heart line direction approximation.
Another outer ring gland is provided with the outside of the tight split nut.
Beneficial effects of the present invention are：
The main shaft bearing structure of a kind of adjustable clearance that the present invention is provided is by designing outer ring gland, inner ring shelves ring
With the structure for being clipped in angular contact ball bearing therebetween, the clearance for being available for regulation is reserved, and corner connection can be made
Touch ball bearing and be in Pre strained state, both avoided bearing wear and improve service life, main shaft is improve again
Positional precision.
Brief description of the drawings
Fig. 1 is the base bearing structural representation of adjustable clearance of the invention；
Fig. 2 is main bearing arrangement schematic cross-section.
In figure：1. main shaft, 2. outer ring gland, 3. tight split nut, 4. angular contact ball bearing, 5. inner ring shelves ring, F6.
Outside pressure, F7. inside pressures.
Specific embodiment
Technical scheme and beneficial effect are further said with specific embodiment below in conjunction with the accompanying drawings
It is bright.
As shown in figure 1, the main shaft bearing structure of the adjustable clearance of present invention offer includes outer ring gland 2, tight lock
Nut 3, angular contact ball bearing 4 and inner ring shelves ring 5.Outer ring gland 2 is enclosed within the outside of main shaft 1.Angular contact ball bearing
4th, inner ring shelves ring 5 and tight split nut 3 are located at the outer surface of main shaft 1 with being sequentially connected.The outer ring of angular contact ball bearing 4
It is connected with outer ring gland 2, the outside pressure in direction to the right is produced when the extruding by outer ring gland 2
F6.The inner ring of angular contact ball bearing 4 is subject to produce an inside pressure to the left during the extruding of inner ring shelves ring 5
F7.Tight split nut 3 can along the locking of the axial direction of main shaft 1 to change pretightning force, regulation inner ring shelves ring 5 for
The inside pressure F7 of the inner ring of angular contact ball bearing 4.The outside of tight split nut 3 is provided with the another of its protective effect
Individual outer ring gland 2.Main shaft 1 is provided with 2 masters of in opposite direction, mutual cooperation adjustable clearance axially outside
Bearing arrangement.
The course of work of the invention is：
Two locking nuts 3 at the two ends of main shaft 1 are locked, inner ring baffle ring 5 extrudes the inner ring of angular contact ball bearing 4,
Outer ring gland 2 extrudes the outer ring of angular contact ball bearing 4.In the presence of outside pressure F6 and inside pressure F7,
The inner ring of angular contact ball bearing 4 and outer ring produce the changing of the relative positions and are subjected to displacement so that bearing clearance is gradually reduced, master
Gradually to the equipment ideal axial line direction approximation after assembling, this eliminates the need for main shaft 1 in axle to the axial line of axle 1
To with gap radially, so as to reduce main shaft play, it is ensured that jerk value is minimum when rotated for main shaft.
When the pretightning force that locking nut 3 is produced when tightening is excessive, bearing clearance is too small, rolling element abrasion in bearing
It is excessive to cause bearing temperature rise too fast；When pretightning force is too small, bearing clearance is excessive, can make the axial direction and footpath of main shaft
To the excessive influence running precision of bounce.
Claims (3)
1. the main shaft bearing structure of clearance can adjust, it is characterised in that：It includes outer ring gland (2), tightly locks spiral shell
Female (3), angular contact ball bearing (4) and inner ring shelves ring (5)；Outer ring gland (2) is enclosed within main shaft (1) outward
Side；Angular contact ball bearing (4), inner ring shelves ring (5) and tight split nut (3) are located at main shaft with being sequentially connected
(1) outer surface；The outer ring of angular contact ball bearing (4) is connected with outer ring gland (2), when angular contact ball axle
Hold (4) by outer ring gland (2) extruding when produce an outside pressure (F6)；Angular contact ball bearing (4)
Inner ring be subject to inner ring shelves ring (5) extruding when produce an inside pressure (F7)；Tight split nut (3) can
To change pretightning force, angle is acted on to adjust inner ring shelves ring (5) with along the locking of the axial direction of main shaft (1)
The inside pressure (F7) of the inner ring of contact ball bearing (4)；Main shaft (1) is provided with 2 directions axially outside
Conversely, the main shaft bearing structure of the adjustable clearance for cooperating.
2. the main shaft bearing structure of adjustable clearance according to claim 1, it is characterised in that：Described
In the presence of outside pressure (F6) and inside pressure (F7), the inner ring of angular contact ball bearing (4) and outer ring
Produce the changing of the relative positions and be subjected to displacement so that bearing clearance is gradually reduced, after the axial line of main shaft (1) is to assembling
Equipment ideal axial line direction approximation.
3. the main shaft bearing structure of adjustable clearance according to claim 2, it is characterised in that：It is described tight
Another outer ring gland (2) is provided with the outside of split nut (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511031921.5A CN106931045A (en) | 2015-12-31 | 2015-12-31 | The main shaft bearing structure of adjustable clearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511031921.5A CN106931045A (en) | 2015-12-31 | 2015-12-31 | The main shaft bearing structure of adjustable clearance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106931045A true CN106931045A (en) | 2017-07-07 |
Family
ID=59444095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511031921.5A Pending CN106931045A (en) | 2015-12-31 | 2015-12-31 | The main shaft bearing structure of adjustable clearance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106931045A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869704A (en) * | 2018-08-18 | 2018-11-23 | 卿茂荣 | A kind of precompressed locking device of RV speed-reducer corner contact bearing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1183139A (en) * | 1995-03-31 | 1998-05-27 | Skf公司 | Method for clearance adjustment in a rolling bearing |
| JPH11351267A (en) * | 1998-06-05 | 1999-12-24 | Hitachi Constr Mach Co Ltd | Bearing fixing device |
| JP2002098127A (en) * | 2000-09-26 | 2002-04-05 | Tcm Corp | Locking device for nut |
| CN2716575Y (en) * | 2004-07-21 | 2005-08-10 | 攀钢集团攀枝花钢铁研究院 | Rolling bearing play adjusting device |
| CN105114604A (en) * | 2015-07-24 | 2015-12-02 | 李深文 | Conical bearing clearance adjusting structure and adjusting method |
-
2015
- 2015-12-31 CN CN201511031921.5A patent/CN106931045A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1183139A (en) * | 1995-03-31 | 1998-05-27 | Skf公司 | Method for clearance adjustment in a rolling bearing |
| JPH11351267A (en) * | 1998-06-05 | 1999-12-24 | Hitachi Constr Mach Co Ltd | Bearing fixing device |
| JP2002098127A (en) * | 2000-09-26 | 2002-04-05 | Tcm Corp | Locking device for nut |
| CN2716575Y (en) * | 2004-07-21 | 2005-08-10 | 攀钢集团攀枝花钢铁研究院 | Rolling bearing play adjusting device |
| CN105114604A (en) * | 2015-07-24 | 2015-12-02 | 李深文 | Conical bearing clearance adjusting structure and adjusting method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869704A (en) * | 2018-08-18 | 2018-11-23 | 卿茂荣 | A kind of precompressed locking device of RV speed-reducer corner contact bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170707 |
|
| WD01 | Invention patent application deemed withdrawn after publication |