CN203962303U - Novel fan main bearing axial direction positioning device - Google Patents
Novel fan main bearing axial direction positioning device Download PDFInfo
- Publication number
- CN203962303U CN203962303U CN201420372528.7U CN201420372528U CN203962303U CN 203962303 U CN203962303 U CN 203962303U CN 201420372528 U CN201420372528 U CN 201420372528U CN 203962303 U CN203962303 U CN 203962303U
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- bearing
- locking nut
- axle sleeve
- positioning device
- axial direction
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- Y02E10/722—
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- Mounting Of Bearings Or Others (AREA)
Abstract
The utility model provides a kind of novel fan main bearing axial direction positioning device of the reliability that improves main bearing and blower fan, comprise the main shaft being connected with impeller, be arranged on the first axle sleeve and the second axle sleeve on main shaft, be arranged on the bearing support in blower fan frame, in described bearing support, be provided with bearing, described bearing is between described the first axle sleeve and the second axle sleeve; The inner peripheral surface of described locking nut is provided with T-shaped internal thread, described main shaft is provided with the T-shaped outside thread matching with T-shaped internal thread, the end face of described locking nut is provided with multiple axial locking screw pits, is provided with lock bolt locking nut is fixed on the second axle sleeve in described locking screw pit; Annular inside groove on described locking nut inner peripheral surface, the exterior edge face of described locking nut is provided with equally distributed multiple fan groove, is uniformly distributed and is provided with multiple rectangle grooves on the outer peripheral surface of described locking nut.Novel fan main bearing axial direction positioning device of the present utility model, can ensure that bearing inner race axially locating is reliably accurate, avoids the phenomenon that occurs that inner ring axially locating is not tight, circle fretting wear appears running in axle sleeve; Improve axially locating and locking function, improve the reliability of main bearing and blower fan.
Description
Technical field
The utility model relates to a kind of bearing positioning device, especially a kind of novel fan main bearing axial direction positioning device.
Background technique
The axially locating mode of high-power wind-driven generator group main bearing mainly contains following two kinds at present: the one, and adopt the width of match grinding bearing (ball) cover to ensure correct location and the pretension of main bearing for the biserial or the single-row tapered roller bearing that need bearing pre-tightened; The one, adopt axle sleeve and round nut to ensure the axially locating of main bearing inner ring for the selfaligning roller bearing or the roller bearing that do not need bearing pre-tightened.For the main bearing axially locating that does not need preload, there is following problem according to current use present situation: 1, round nut axial compression cause not axle sleeve and main bearing inner ring axially locating not tight, axle sleeve and main shaft relatively rotate and fretting wear, cause main bearing high temperature; 2, round nut, because of lock ability not in blower fan main drive chain vibration with cause very much that round nut is loosening even to come off in larger axial force, tilting moment effect situation, brings very adverse influence to main shaft and main bearing; 3, because the improper meeting of installation control method of round nut and axle sleeve causes the axially locating of axle sleeve and main bearing inner ring not tight.The problem of these existence can reduce the working life that blower fan main shaft holds, and causes main bearing to lose efficacy in advance; Reduce blower fan reliability.
Model utility content
The utility model provides a kind of novel fan main bearing axial direction positioning device of the reliability that improves main bearing and blower fan.
Realize the novel fan main bearing axial direction positioning device of the utility model object, comprise the main shaft being connected with impeller, be enclosed within the first axle sleeve and the second axle sleeve on main shaft, be arranged on the bearing support in blower fan frame, in described bearing support, be provided with bearing, described bearing is between described the first axle sleeve and the second axle sleeve; One side of described bearing support is provided with bearing front cover, and opposite side is provided with bearing rear end cover, and described bearing front cover and bearing rear end cover are bolted on respectively on bearing support;
Described the first axle sleeve withstands on the shaft shoulder of main shaft, the outside of described the second axle sleeve is provided with locking nut, the inner peripheral surface of described locking nut is provided with T-shaped internal thread, described main shaft is provided with the T-shaped outside thread matching with T-shaped internal thread, the end face of described locking nut is provided with multiple axial locking screw pits, is provided with lock bolt locking nut is fixed on the second axle sleeve in described locking screw pit.
Annular inside groove on described locking nut inner peripheral surface.
The exterior edge face of described locking nut is provided with equally distributed multiple fan groove, and the bottom surface of described fan groove and the inner side end of annular inside groove are in one plane.
On the outer peripheral surface of described locking nut, be uniformly distributed and be provided with multiple rectangle grooves, for fixing and locking instrument by locking nut screwing.
The surface of contact of described bearing front cover and bearing support is sphenoid surface.
The beneficial effect of novel fan main bearing axial direction positioning device of the present utility model is as follows:
Novel fan main bearing axial direction positioning device of the present utility model, can ensure that bearing inner race axially locating is reliably accurate, avoids the phenomenon that occurs that inner ring axially locating is not tight, circle fretting wear appears running in axle sleeve; Improve axially locating and locking function, improve the reliability of main bearing and blower fan.
Can greatly improve the lock ability that the resiliently deformable of locking nut improves locking nut with this by the locking nut with annular inside groove and uniform fan groove, can avoid locking nut to occur situation loosening or that come off; Adopt the location, bearing (ball) cover outer ring that little sphenoid surface coordinates can make the installation and removal of bearing (ball) cover more simple and convenient.
Brief description of the drawings
Fig. 1 is the structural representation of novel fan main bearing axial direction positioning device of the present utility model.
Fig. 2 is the structural representation of the locking nut of novel fan main bearing axial direction positioning device of the present utility model.
Fig. 3 is the A-A sectional view of Fig. 2.
Fig. 4 is the right elevation of Fig. 2.
Fig. 5 is the local I enlarged diagram of Fig. 1.
Fig. 6 be novel fan main bearing axial direction positioning device of the present utility model locking nut tighten schematic diagram.
Embodiment
As shown in Fig. 1～4, novel fan main bearing axial direction positioning device of the present utility model, comprise the main shaft 1 being connected with impeller, be enclosed within the first axle sleeve 2 and the second axle sleeve 7 on main shaft 1, be arranged on the bearing support 4 in blower fan frame, in described bearing support 4, be provided with bearing 5, described bearing 5 is between described the first axle sleeve 2 and the second axle sleeve 7; One side of described bearing support 4 is provided with bearing front cover 3, and opposite side is provided with bearing rear end cover 6, and described bearing front cover 3 and bearing rear end cover 6 are fixed on bearing support 4 by bolt 9 respectively;
Described the first axle sleeve 2 withstands on the shaft shoulder of main shaft 1, the outside of described the second axle sleeve 7 is provided with locking nut 8, the inner peripheral surface of described locking nut 8 is provided with T-shaped internal thread 81, described main shaft 1 is provided with the T-shaped outside thread 10 matching with T-shaped internal thread 81, the end face of described locking nut 8 is provided with multiple axial locking screw pits 84, is provided with lock bolt 11 locking nut 8 is fixed on the second axle sleeve 7 in described locking screw pit 84.
Annular inside groove 82 on described locking nut 8 inner peripheral surfaces.
The exterior edge face of described locking nut 8 is provided with equally distributed multiple fan groove 83, and the inner side end of the bottom surface of described fan groove 83 and annular inside groove 82 in one plane.
As shown in Figure 6, on the outer peripheral surface of described locking nut 8, be uniformly distributed and be provided with multiple rectangle grooves 85, for fixing and locking instrument 80, locking nut 8 is tightened.
Uniform fan groove can increase the resiliently deformable of T-shaped screw thread greatly, greatly improves the impacting force to locking nut, and uniform fan groove can make the axial pressing force of locking nut more even.Equally distributed locking screw pit is used for installing the lock bolt of locking nut, compact lock jack panel.The rectangle groove of dividing equally distribution on locking nut circumference compresses axle sleeve for axially locating.Can enough ensure the lock ability of the T-shaped screw thread of locking nut by locking nut annular inside groove, fan groove, lock bolt, greatly improve the reliability of main bearing and blower fan.
As shown in Figure 5, described bearing front cover 3 is sphenoid surface 12 with the surface of contact of bearing support 4.Bearing front cover and the mode that bearing support attachment hole position adopts the interior sphenoid surface of inner hole of bearing seat and the outer sphenoid surface of bearing front cover to coordinate, be convenient to the installation and removal of bearing front cover.
Embodiment recited above is described preferred implementation of the present utility model; not scope of the present utility model is limited; design under spiritual prerequisite not departing from the utility model; various distortion and improvement that the common engineers and technicians in related domain make technical solutions of the utility model, all should fall in the definite protection domain of claims of the present utility model.
Claims (5)
1. novel fan main bearing axial direction positioning device, it is characterized in that: comprise the main shaft being connected with impeller, be enclosed within the first axle sleeve and the second axle sleeve on main shaft, be arranged on the bearing support in blower fan frame, in described bearing support, be provided with bearing, described bearing is between described the first axle sleeve and the second axle sleeve; One side of described bearing support is provided with bearing front cover, and opposite side is provided with bearing rear end cover, and described bearing front cover and bearing rear end cover are bolted on respectively on bearing support;
Described the first axle sleeve withstands on the shaft shoulder of main shaft, the outside of described the second axle sleeve is provided with locking nut, the inner peripheral surface of described locking nut is provided with T-shaped internal thread, described main shaft is provided with the T-shaped outside thread matching with T-shaped internal thread, the end face of described locking nut is provided with multiple axial locking screw pits, is provided with lock bolt locking nut is fixed on the second axle sleeve in described locking screw pit.
2. novel fan main bearing axial direction positioning device according to claim 1, is characterized in that: annular inside groove on described locking nut inner peripheral surface.
3. novel fan main bearing axial direction positioning device according to claim 2, is characterized in that: the exterior edge face of described locking nut is provided with equally distributed multiple fan groove, the bottom surface of described fan groove and the inner side end of annular inside groove are in one plane.
4. novel fan main bearing axial direction positioning device according to claim 2, is characterized in that: on the outer peripheral surface of described locking nut, be uniformly distributed and be provided with multiple rectangle grooves, for fixing and locking instrument by locking nut screwing.
5. novel fan main bearing axial direction positioning device according to claim 1, is characterized in that: the surface of contact of described bearing front cover and bearing support is sphenoid surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420372528.7U CN203962303U (en) | 2014-07-08 | 2014-07-08 | Novel fan main bearing axial direction positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420372528.7U CN203962303U (en) | 2014-07-08 | 2014-07-08 | Novel fan main bearing axial direction positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203962303U true CN203962303U (en) | 2014-11-26 |
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ID=51922898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420372528.7U Active CN203962303U (en) | 2014-07-08 | 2014-07-08 | Novel fan main bearing axial direction positioning device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203962303U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090454A (en) * | 2015-08-08 | 2015-11-25 | 常州市武进金城齿轮有限公司 | Axial gear fixing device |
| CN109404423A (en) * | 2018-10-31 | 2019-03-01 | 东莞市巨冈机械工业有限公司 | A kind of high speed and super precision rotary screw fixed structure |
-
2014
- 2014-07-08 CN CN201420372528.7U patent/CN203962303U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090454A (en) * | 2015-08-08 | 2015-11-25 | 常州市武进金城齿轮有限公司 | Axial gear fixing device |
| CN109404423A (en) * | 2018-10-31 | 2019-03-01 | 东莞市巨冈机械工业有限公司 | A kind of high speed and super precision rotary screw fixed structure |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |