CN107910976A - A kind of vertical machine and its bottom end bearing structure - Google Patents
A kind of vertical machine and its bottom end bearing structure Download PDFInfo
- Publication number
- CN107910976A CN107910976A CN201711328192.9A CN201711328192A CN107910976A CN 107910976 A CN107910976 A CN 107910976A CN 201711328192 A CN201711328192 A CN 201711328192A CN 107910976 A CN107910976 A CN 107910976A
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- China
- Prior art keywords
- bearing
- cover
- bottom end
- vertical machine
- cylinder roller
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention discloses a kind of bottom end bearing structure of vertical machine, including bearing, the bearing holder (housing, cover) that is sheathed on outside bearing and the bearing cover and internal bearing cover for being respectively arranged at bearing both ends, between the outer ring of bearing and bearing holder (housing, cover) transition coordinate；Bearing is cylinder roller bearing, and the axial both ends of cylinder roller bearing are in contact with internal bearing cover and bearing cover respectively.Using the bottom end bearing structure of vertical machine provided by the invention, since bearing uses cylinder roller bearing, bearing play the guiding role, smaller radial is born to load, axial displacement is produced after can allow for big rotor thermal expansion, thus gap can be not provided between cylinder roller bearing and internal bearing cover and bearing cover, that is, the axial both ends of cylinder roller bearing are in contact with internal bearing cover and bearing cover respectively, and then vibration and the noise of bearing are effectively reduced, extend the service life of bearing.Meanwhile using cylinder roller bearing compared to deep groove ball bearing assembling when it is simpler, it is time saving and energy saving.
Description
Technical field
The present invention relates to technical field of motors, more specifically to a kind of bottom end bearing structure of vertical machine, also relates to
A kind of and vertical machine with the bottom end bearing structure.
Background technology
With the development of national economy, the demand of electric power is increasing, while with the closing of small thermoelectricity, builds large-scale electricity
Factory becomes inexorable trend, and the large-scale pump that follows is the essential equipment of various big power stations, and follows electric motor for pump and be usually
Large-scale vertical machine, whether motor safe and reliable can have with its bearing arrangement closely contacts.
The bottom end bearing of current existing vertical machine generally uses deep groove ball bearing, bears motor radial load, deep-groove ball
Bearing outer ring coordinates with bearing holder (housing, cover) for transition, and gap is left in both ends with the inside and outside lid of bearing, to meet rotor thermal expansion
After produce axial displacement.But larger vibration and noise are easily produced to deep groove ball bearing pretension, bearing due to not taking, so as to contract
Short bearing life, this phenomenon are especially apparent in Large Type Vertical Motor.In addition deep groove ball bearing structure is taken to assemble
When it is complex, take a lot of work, it is time-consuming.
In conclusion Large Type Vertical Motor bearing arrangement how is selected, to ensure motor bearings vibration, noise and bearing work
Meet customer requirement as the service life, and facilitate installation and dismounting of the worker to motor, be that those skilled in the art need to solve at present
Important technological problems certainly.
The content of the invention
In view of this, first purpose of the invention is the bottom end bearing structure for providing a kind of vertical machine, the lower end
The problem of structure design of bearing arrangement can efficiently solve Large Type Vertical Motor vibration, noise is big, installing and dismounting is inconvenient, this
Second purpose of invention is to provide a kind of vertical machine for including above-mentioned bottom end bearing structure.
In order to reach above-mentioned first purpose, the present invention provides following technical solution：
A kind of bottom end bearing structure of vertical machine, including bearing, the bearing holder (housing, cover) that is sheathed on outside the bearing and set respectively
The bearing cover and internal bearing cover at the bearing both ends are placed in, transition cooperation between the outer ring of the bearing and the bearing holder (housing, cover)；
The bearing is cylinder roller bearing, and the axial both ends of the cylinder roller bearing respectively with the internal bearing cover and the axis
Outer cover is held to be in contact.
Preferably, in the bottom end bearing structure of above-mentioned vertical machine, the endoporus of the bearing holder (housing, cover) and the bearing cover phase
Adjacent one end has the boss extended to form radially, inwardly, and the end face of the outer ring offsets with the boss.
Preferably, in the bottom end bearing structure of above-mentioned vertical machine, the bottom of the boss is outer with the bearing cover
Circle offsets.
Preferably, in the bottom end bearing structure of above-mentioned vertical machine, the madial wall of the boss and the bearing cover
Inner face is concordant.
Preferably, in the bottom end bearing structure of above-mentioned vertical machine, the excircle dimension of the bearing cover is more than described stand
The excircle dimension of the shaft coupling of formula motor；The cylindrical branch size of the bearing holder (housing, cover) is more than the cylindrical of the shaft coupling of the vertical machine
Size.
Preferably, in the bottom end bearing structure of above-mentioned vertical machine, the endoporus of the internal bearing cover is offered for preventing
The labyrinth ring of the outflow of lubrication oil of the vertical machine；The endoporus of the bearing cover is offered for preventing the lubrication oil stream
The labyrinth ring gone out.
The bottom end bearing structure of vertical machine provided by the invention includes bearing, bearing holder (housing, cover), bearing cover and internal bearing cover.
Wherein, bearing cover is respectively arranged at the axial both ends of bearing with internal bearing cover；Bearing is cylinder roller bearing；Bearing holder (housing, cover) is arranged
In outside bearing, between the outer ring of bearing and bearing holder (housing, cover) transition coordinate, and the axial both ends of cylinder roller bearing respectively with bearing
Lid and bearing cover are in contact.
Using the bottom end bearing structure of vertical machine provided by the invention, since bearing uses cylinder roller bearing, bearing
It play the guiding role, bears smaller radial to load, axial displacement, thus cylinder rolling are produced after can allow for big rotor thermal expansion
Gap, that is, the axial both ends difference of cylinder roller bearing can be not provided between sub- bearing and internal bearing cover and bearing cover
It is in contact with internal bearing cover and bearing cover, and then effectively reduces vibration and the noise of bearing, extends the service life of bearing.
Meanwhile using cylinder roller bearing compared to deep groove ball bearing assembling when it is simpler, it is time saving and energy saving.
In one preferred embodiment, the endoporus of bearing holder (housing, cover) one end adjacent with bearing cover have radially, to
The boss that inner side extends to form, end face and the boss of the outer ring of cylinder roller bearing offset.Namely bearing holder (housing, cover) endoporus has platform
Rank, can stop that bearing outer ring drops to bearing cover side.Therefore in motor disassembling, it is effectively anti-when removing bearing cover
Stop coming off for bearing outer ring, and then avoid the injury to personnel thereby resulted in and bearing is damaged.
In another preferred embodiment, the excircle dimension of bearing cover is more than the cylindrical of the shaft coupling of vertical machine
Size；The cylindrical branch size of bearing holder (housing, cover) is more than the excircle dimension of the shaft coupling of vertical machine.It need to be examined during due to construction design of journal bearings
Considering rotor dismounting needs, and the excircle dimension of the bearing holder (housing, cover) of bottom end bearing structure and bearing cover is arranged into more than shaft coupling
Outside diameter is saved, after bolt of cover is removed, facilitates rotor band shaft coupling and the overall extraction of bottom end bearing assembling so that dismounting is more
For convenience.
In another preferred embodiment, the endoporus of internal bearing cover offers the lubricating oil for preventing vertical machine
The labyrinth ring of outflow；The endoporus of bearing cover offers the labyrinth ring for preventing outflow of lubrication oil.So as to effectively prevent motor
Outflow of lubrication oil motor is flowed into rotor core.
In order to reach above-mentioned second purpose, present invention also offers a kind of vertical machine, which includes above-mentioned
Any bottom end bearing structure.Since above-mentioned bottom end bearing structure has above-mentioned technique effect, there is the bottom end bearing structure
Vertical machine should also have corresponding technique effect.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the partial structural diagram of the bottom end bearing structure of a specific embodiment of the invention.
Marked in attached drawing as follows：
Bearing cover 1, bearing holder (housing, cover) 2, bearing 3, internal bearing cover 4, boss 21.
Embodiment
The embodiment of the invention discloses a kind of bottom end bearing structure, to reduce motor vibration in the process of running and make an uproar
Sound, facilitates the installation and removal of motor.
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
Referring to Fig. 1, Fig. 1 is the partial structural diagram of the bottom end bearing structure of a specific embodiment of the invention.
In a specific embodiment, the bottom end bearing structure of vertical machine provided by the invention includes bearing 3, bearing holder (housing, cover)
2nd, bearing cover 1 and internal bearing cover 4.
Wherein, bearing cover 1 is respectively arranged at the axial both ends of bearing 3 with internal bearing cover 4.Specifically, bearing cover 1 with
Internal bearing cover 4 can be fixedly connected by bolt with bearing holder (housing, cover) 2 respectively, so as to be fixed on the both ends of bearing 3.Bearing cover 1 with
The concrete structure of internal bearing cover 4 refer to the prior art, and details are not described herein again.
Bearing holder (housing, cover) 2 is sheathed on outside bearing 3, and the structure of specific bearing holder (housing, cover) 2 refer to the prior art, and details are not described herein again.Axis
Holding 3 includes outer ring and inner ring, transition cooperation wherein between outer ring and bearing holder (housing, cover) 2.Bearing 3 is cylinder roller bearing 3, i.e. rolling element
It is the radial antifriction bearing 3 of cylindrical roller.Specifically, 3 internal structure of cylinder roller bearing is in arranged in parallel, roller using roller
Between spacing holder or spacing block are housed, can prevent roller inclination or roller between phase mutual friction, effectively prevent
The increase of rotation torque.
The axial both ends of cylinder roller bearing 3 are in contact with internal bearing cover 4 and bearing cover 1 respectively.Traditional vertical motor
It is all to use deep groove ball bearing 3 that bottom end bearing 3, which assembles, and bearing 3 and internal bearing cover 4, bearing cover 1 all leave on axial space
Certain interval, to prevent rotor from producing axial displacement after being expanded because of temperature rise, but due to lacking axial pretightening, bearing 3 is easy
Produce larger vibration and noise.And cylinder roller bearing 3 is used, produce axial position after can allow for big rotor thermal expansion
Move.Therefore its axial both ends is in contact with internal bearing cover 4 and bearing cover 1 respectively, without staying gap, so as to effectively reduce bearing
3 vibration and noise.
Using the bottom end bearing structure of vertical machine provided by the invention, since bearing 3 uses cylinder roller bearing 3, axis
Hold 3 to play the guiding role, bear smaller radial to load, axial displacement, thus circle are produced after can allow for big rotor thermal expansion
Gap, that is, the axial direction of cylinder roller bearing 3 can be not provided between column roller bearing 3 and internal bearing cover 4 and bearing cover 1
Both ends are in contact with internal bearing cover 4 and bearing cover 1 respectively, and then effectively reduce vibration and the noise of bearing 3, extend bearing
3 service life.Meanwhile using cylinder roller bearing 3 compared to deep groove ball bearing 3 assembling when it is simpler, it is time saving and energy saving.
Further, the endoporus of bearing holder (housing, cover) 2 one end adjacent with bearing cover 1 has and extends to form radially, inwardly
Boss 21, end face and the boss 21 of outer ring offset.Namely 2 endoporus of bearing holder (housing, cover) has step, can stop 3 outer ring of bearing to
Drop 1 side of bearing cover.Therefore in motor disassembling, when removing bearing cover 1, coming off for 3 outer ring of bearing is effectively prevent,
And then it is impaired to avoid the injury to personnel thereby resulted in and bearing 3.It should be noted that boss 21 extends radially, inwardly,
Inner side herein refers to radially inside and outside, consistent with the inner ring of bearing 3 and the inward-outward direction of outer ring.The setting of boss 21 so that
The section of bearing holder (housing, cover) 2 is in inverted L-shaped, and the horizontal sides of L-shaped coordinate with the outer ring periphery of bearing 3, and vertical edge is outer with 3 outer ring of bearing
Side end face coordinates, so that bearing 3 is limited in bearing holder (housing, cover) 2 and cannot be come off by 1 side of bearing cover.
Specifically, the bottom of boss 21 offsets with the cylindrical of bearing cover 1.Namely boss 21 is sheathed on bearing cover 1
Outside so that overall co-ordination is more close.
Further, the madial wall of boss 21 is concordant with the inner face of bearing cover 1.It should be noted that boss 21
Madial wall i.e. boss 21 are presented axially in the wall of inner side, and opposite opposite side is lateral wall, is coordinated with bearing cover 1.
Madial wall namely offsets with 3 outer ring of bearing, for stopping wall of 3 outer ring of bearing to prevent it from coming off.Madial wall and bearing
The inner face of outer cover 1 is concordant, so as to be fitted close with 3 outer ring of bearing, further reduces noise and the vibration of bearing 3.
On the basis of the various embodiments described above, the excircle dimension of bearing cover 1 is more than the cylindrical of the shaft coupling of vertical machine
Size；The cylindrical branch size of bearing holder (housing, cover) 2 is more than the excircle dimension of the shaft coupling of vertical machine.It need to be examined during due to construction design of journal bearings
Considering rotor dismounting needs, and the excircle dimension of the bearing holder (housing, cover) 2 of bottom end bearing structure and bearing cover 1 is arranged into more than connection
Joint outside diameter, after bolt of cover is removed, the rotor of motor can be disassembled completely together with the assembling of upper and lower end bearing 3,
Then shaft is carried out again and bearing 3 assembles the dismounting of other parts so that dismounting is more convenient.
In the various embodiments described above, the endoporus of internal bearing cover 4 offers the outflow of lubrication oil for preventing vertical machine
Labyrinth ring；The endoporus of bearing cover 1 offers the labyrinth ring for preventing outflow of lubrication oil.The structure of specific labyrinth ring refer to
The prior art, details are not described herein again.It is effectively that the both sides of the both sides of bearing cover 1 and internal bearing cover 4 are close by setting labyrinth ring
Envelope, and then prevent dynamo oil outflow motor or be flowed into rotor core, that is, avoid motor oil leakage phenomenon.
To sum up, provided by the present invention for the bottom end bearing structure of Large Type Vertical Motor, electricity can not only effectively be reduced
The machine vibration that 3 position of bearing produces in the process of running and noise, but also the installation and dismounting of motor are largely simplified,
To meet vibration noise requirement of the user to motor, while the motor delivery cycle is substantially reduced, but also can greatly improved
The after-sales service efficiency of motor.
Based on the bottom end bearing structure provided in above-described embodiment, present invention also offers a kind of vertical machine, this is vertical
Motor includes any one bottom end bearing structure in above-described embodiment.Under being employed due to the vertical machine in above-described embodiment
End bearing structure, so the beneficial effect of the vertical machine refer to above-described embodiment.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or use the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and the principles and novel features disclosed herein phase one
The most wide scope caused.
Claims (7)
1. a kind of bottom end bearing structure of vertical machine, including bearing, the bearing holder (housing, cover) that is sheathed on outside the bearing and set respectively
Bearing cover and internal bearing cover in the bearing both ends, transition cooperation between the outer ring of the bearing and the bearing holder (housing, cover)；Its
Be characterized in that, the bearing is cylinder roller bearing, and the axial both ends of the cylinder roller bearing respectively with the bearing
Lid and the bearing cover are in contact.
2. the bottom end bearing structure of vertical machine according to claim 1, it is characterised in that the endoporus of the bearing holder (housing, cover) with
The adjacent one end of the bearing cover has the boss that extends to form radially, inwardly, the end face of the outer ring with it is described convex
Platform offsets.
3. the bottom end bearing structure of vertical machine according to claim 2, it is characterised in that the bottom of the boss and institute
The cylindrical of bearing cover is stated to offset.
4. the bottom end bearing structure of vertical machine according to claim 2, it is characterised in that the madial wall of the boss with
The inner face of the bearing cover is concordant.
5. according to the bottom end bearing structure of claim 1-4 any one of them vertical machines, it is characterised in that outside the bearing
The excircle dimension of lid is more than the excircle dimension of the shaft coupling of the vertical machine；The cylindrical branch size of the bearing holder (housing, cover) is more than described
The excircle dimension of the shaft coupling of vertical machine.
6. according to the bottom end bearing structure of claim 1-4 any one of them vertical machines, it is characterised in that in the bearing
The endoporus of lid offers the labyrinth ring of the outflow of lubrication oil for preventing the vertical machine；The endoporus of the bearing cover opens up
It is useful for preventing the labyrinth ring of the outflow of lubrication oil.
7. a kind of vertical machine, it is characterised in that including such as claim 1-6 any one of them bottom end bearing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711328192.9A CN107910976A (en) | 2017-12-13 | 2017-12-13 | A kind of vertical machine and its bottom end bearing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711328192.9A CN107910976A (en) | 2017-12-13 | 2017-12-13 | A kind of vertical machine and its bottom end bearing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107910976A true CN107910976A (en) | 2018-04-13 |
Family
ID=61854352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711328192.9A Pending CN107910976A (en) | 2017-12-13 | 2017-12-13 | A kind of vertical machine and its bottom end bearing structure |
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| Country | Link |
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| CN (1) | CN107910976A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2664265Y (en) * | 2003-11-20 | 2004-12-15 | 佳木斯电机股份有限公司 | Low-voltage high-power frequency control three-phase asynchronous motor |
| CN2788440Y (en) * | 2004-08-04 | 2006-06-14 | 杨志伟 | Explosion-separating three phases asynchronous motor rotation shaft bearing structure for coal-cutter |
| CN201075747Y (en) * | 2007-08-29 | 2008-06-18 | 上海电气集团上海电机厂有限公司 | Structure of medium-sized vertical type DC machine |
| CN201723576U (en) * | 2010-06-30 | 2011-01-26 | 无锡哈电电机有限公司 | Vertical motor bearing device |
| CN202696338U (en) * | 2012-07-11 | 2013-01-23 | 无锡市中达电机有限公司 | Motor bearing mechanism special for compressor |
| CN204349660U (en) * | 2014-12-17 | 2015-05-20 | 天津神川电机有限公司 | Resistance to motor bearings seal en-hancement structure of shaking |
-
2017
- 2017-12-13 CN CN201711328192.9A patent/CN107910976A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2664265Y (en) * | 2003-11-20 | 2004-12-15 | 佳木斯电机股份有限公司 | Low-voltage high-power frequency control three-phase asynchronous motor |
| CN2788440Y (en) * | 2004-08-04 | 2006-06-14 | 杨志伟 | Explosion-separating three phases asynchronous motor rotation shaft bearing structure for coal-cutter |
| CN201075747Y (en) * | 2007-08-29 | 2008-06-18 | 上海电气集团上海电机厂有限公司 | Structure of medium-sized vertical type DC machine |
| CN201723576U (en) * | 2010-06-30 | 2011-01-26 | 无锡哈电电机有限公司 | Vertical motor bearing device |
| CN202696338U (en) * | 2012-07-11 | 2013-01-23 | 无锡市中达电机有限公司 | Motor bearing mechanism special for compressor |
| CN204349660U (en) * | 2014-12-17 | 2015-05-20 | 天津神川电机有限公司 | Resistance to motor bearings seal en-hancement structure of shaking |
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Application publication date: 20180413 |