CN107659036A - The radial direction magnetic bearing holder structure of thermal expansion deformation is compensated in magnetic suspension motor - Google Patents
The radial direction magnetic bearing holder structure of thermal expansion deformation is compensated in magnetic suspension motor Download PDFInfo
- Publication number
- CN107659036A CN107659036A CN201711034617.5A CN201711034617A CN107659036A CN 107659036 A CN107659036 A CN 107659036A CN 201711034617 A CN201711034617 A CN 201711034617A CN 107659036 A CN107659036 A CN 107659036A
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- CN
- China
- Prior art keywords
- pedestal
- magnetic bearing
- radial direction
- groove
- locating slot
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- 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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Classifications
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses the radial direction magnetic bearing holder structure that thermal expansion deformation is compensated in a kind of magnetic suspension motor, the radial direction magnetic bearing seat is fixed on the casing of magnetic suspension motor, including pedestal, positioning screw and pressing plate, the axis direction of the pedestal is provided with stepped hole, screwed hole is provided with the upper surface of pedestal, positioning screw is through pressing plate and is threaded in pedestal, and one end of pressing plate stretches in the top of stepped hole；The lower surface of the pedestal is provided with locating slot and groove, and the groove is located at the inner side of locating slot, and the depth of groove is more than the depth of locating slot, and the locating slot of pedestal is fixed at the port of casing.The present invention can ensure that magnetic bearing is still controllable under the influence of temperature, the expansion of magnetic bearing is not formed influence for the performance of magnetic bearing.
Description
Technical field：
The present invention relates to the radial direction magnetic bearing holder structure that thermal expansion deformation is compensated in a kind of magnetic suspension motor.
Background technology：
The magnetic bearing of magnetic suspension bearing motor is typically connected by magnetic axis bearing with motor casing, magnetic bearing at work itself
Larger heat can be produced, motor internal miscellaneous part, such as motor stator, do work part, can also produce heat, these heats one
Part by cooling water or cooling air rejects heat to outside motor, and the heat for having little time to shed is stayed in casing, cause casing,
The thermal deformation of magnetic axis bearing and its other parts.Remaining heat can cause motor internal temperature to raise, and too high temperature can shadow
The control of magnetic bearing is rung, the deformation of rotor and the deformation of magnetic bearing stator cause control gap no longer to maintain initial numerical value；Cross
High temperature will also influence the assembly relation of motor internal, and material is different so thermal coefficient of expansion is different, not cause deflection also not
Together, it is possible to produce uncontrollable deformation under the restriction of mating surface.
The content of the invention：
The present invention be in order to solve the above-mentioned problems of the prior art and provide in a kind of magnetic suspension motor compensate heat it is swollen
The radial direction magnetic bearing holder structure of bulging deformation.
The technical solution adopted in the present invention has：The radial direction magnetic bearing seat knot of thermal expansion deformation is compensated in magnetic suspension motor
Structure, the radial direction magnetic bearing seat is fixed on the casing of magnetic suspension motor, including pedestal, positioning screw and pressing plate, the pedestal
Axis direction be provided with stepped hole, be provided with screwed hole on the upper surface of pedestal, positioning screw is through pressing plate and is threadedly coupled
Present internal, one end of pressing plate stretches in the top of stepped hole；
The lower surface of the pedestal is provided with locating slot and groove, and the groove is located at the inner side of locating slot, and groove
Depth is more than the depth of locating slot, and the locating slot of pedestal is fixed at the port of casing.
Further, the groove is cone-shaped.
Further, the angle between the side and bottom surface of the groove is 5~20 °.
Further, the pedestal is made of stainless steel material.
The present invention has the advantages that：The present invention can ensure that magnetic bearing is still controllable under the influence of temperature, makes magnetic
The expansion of bearing does not form influence for the performance of magnetic bearing.
Brief description of the drawings：
Fig. 1 is structure chart of the present invention.
Fig. 2 is the structure chart of pedestal in the present invention.
Fig. 3 is the dilatancy schematic diagram of pedestal open channels in the present invention.
Fig. 4 is the dilatancy schematic diagram of pedestal not open channels in the present invention.
Embodiment：
The present invention is further illustrated below in conjunction with the accompanying drawings.
Such as Fig. 1 and Fig. 2, the present invention discloses the radial direction magnetic bearing seat knot that thermal expansion deformation is compensated in a kind of magnetic suspension motor
Structure, radial direction magnetic bearing seat are fixed on the casing 1 of magnetic suspension motor, including pedestal 2, positioning screw 3 and pressing plate 4, in pedestal 2
Axis direction is provided with stepped hole 21, and screwed hole 22 is provided with the upper surface of pedestal 2, and positioning screw 3 passes through pressing plate 4 and screw thread
It is connected in pedestal 2, one end of pressing plate 4 stretches in the top of stepped hole 21.
Locating slot 23 and groove 24 are provided with the lower surface of pedestal 2, groove 24 is located at the inner side of locating slot 23, and groove
24 depth is more than the depth of locating slot 23.
Groove 24 is cone-shaped, and the angle a between the side and bottom surface of groove 24 is 5~20 °.Pedestal 2 in the present invention
It is made of stainless steel material.
When mounted, the locating slot 23 of pedestal 2 is positioned at the port of casing 1, and by tight between pedestal 2 and casing 1
Gu screw 8 is fixedly connected, magnetic bearing 5 is placed in the stepped hole 21 of pedestal 2, and magnetic bearing 5 is axially positioned on stepped hole 21 by pressing plate 4
It is interior.
Such as Fig. 4, when on pedestal 2 without processing groove 24, at an elevated temperature, the casing 1 of magnetic suspension motor,
Pedestal 2 and magnetic bearing 5 itself all will expansion, and magnetic bearing 5 is depending mainly on magnetic axis bearing outer-ring 51 that outwards (dotted line is in Fig. 3 for deformation
Figure is moved towards in deformation), due to assembly relation be present between pedestal 2 and casing 1, under the constraint of the fitting surface wall I of casing 1 (especially
When being that the coefficient of expansion of magnetic axis bearing is more than the coefficient of expansion of casing), wall II can not only produce deformation radially, in axial direction
On can also be deformed because the deformation radially originally of magnetic axis bearing is suppressed, and then to no constraint or constraint
Weaker place deformation, and deformation radially can form distribution gradient vertically, and the presence of this distribution gradient is harmful
, it will be reacted on the stator of magnetic bearing, is allowed to agree to form distribution gradient in the gap of rotor, is influenceed bearing capacity and control
Logic.
The present invention can produce script thermal expansion by processing the deep groove 24 for crossing locating slot 23 together on pedestal 2
Distribution gradient revert to and be uniformly distributed in the axial direction again.This is due to that the effect of constraint value of mating surface wall I can no longer react
Onto wall II, the deformation of wall III close to free end expansion, so in radial directions, the dilatancy amount of magnetic bearing 5
It revert to axially equally distributed state.As shown in Figure 3.Radial direction magnetic bearing holder structure of the present invention ensure that the deformation side of thermal expansion
To ensure that the controllable of magnetic bearing and rotor clearance.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, some improvement can also be made under the premise without departing from the principles of the invention, and these improvement also should be regarded as the present invention's
Protection domain.
Claims (4)
1. compensating the radial direction magnetic bearing holder structure of thermal expansion deformation in a kind of magnetic suspension motor, the radial direction magnetic bearing seat is fixed on
On the casing (1) of magnetic suspension motor, it is characterised in that：Including pedestal (2), positioning screw (3) and pressing plate (4),
The axis direction of the pedestal (2) is provided with stepped hole (21), and screwed hole (22) is provided with the upper surface of pedestal (2),
Positioning screw (3) is through pressing plate (4) and is threaded in pedestal (2), and one end of pressing plate (4) stretches in the upper of stepped hole (21)
Side；
The lower surface of the pedestal (2) is provided with locating slot (23) and groove (24), and the groove (24) is located at locating slot (23)
Inner side, and the depth of groove (24) is more than the depth of locating slot (23), and the locating slot (23) of pedestal (2) is fixed on casing (1)
Port at.
2. compensating the radial direction magnetic bearing holder structure of thermal expansion deformation in magnetic suspension motor as claimed in claim 1, its feature exists
In：The groove (24) is cone-shaped.
3. compensating the radial direction magnetic bearing holder structure of thermal expansion deformation in magnetic suspension motor as claimed in claim 1, its feature exists
In：Angle between the side and bottom surface of the groove (24) is 5~20 °.
4. compensating the radial direction magnetic bearing holder structure of thermal expansion deformation in magnetic suspension motor as claimed in claim 1, its feature exists
In：The pedestal (2) is made of stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711034617.5A CN107659036A (en) | 2017-10-30 | 2017-10-30 | The radial direction magnetic bearing holder structure of thermal expansion deformation is compensated in magnetic suspension motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711034617.5A CN107659036A (en) | 2017-10-30 | 2017-10-30 | The radial direction magnetic bearing holder structure of thermal expansion deformation is compensated in magnetic suspension motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107659036A true CN107659036A (en) | 2018-02-02 |
Family
ID=61095688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711034617.5A Pending CN107659036A (en) | 2017-10-30 | 2017-10-30 | The radial direction magnetic bearing holder structure of thermal expansion deformation is compensated in magnetic suspension motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107659036A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3692372A (en) * | 1971-06-24 | 1972-09-19 | Gen Electric | Thermally expansible bearing assembly |
| JPS5899247A (en) * | 1981-12-07 | 1983-06-13 | Sanyo Electric Co Ltd | Fixing device of motor iron core |
| JPH0425621A (en) * | 1990-05-16 | 1992-01-29 | Fujitsu Ltd | Support structure for low heat distortion bearing |
| JPH11288551A (en) * | 1998-04-01 | 1999-10-19 | Matsushita Electric Ind Co Ltd | Spindle motor |
| JP3039539B1 (en) * | 1998-12-21 | 2000-05-08 | 日本電気株式会社 | Thermal stress absorption type support mechanism |
| US20040109626A1 (en) * | 2002-12-09 | 2004-06-10 | Caterpillar Inc. | Bearing mounting flange having flexibility pocket |
| KR20040092589A (en) * | 2003-04-24 | 2004-11-04 | 엘지전선 주식회사 | heat-expansion absorb type lead- frame |
| CN101695749A (en) * | 2009-10-20 | 2010-04-21 | 苏州有色金属研究院有限公司 | Frame baffle for fixing electromagnetic casting magnetic field-aided generator |
| CN204716658U (en) * | 2015-03-26 | 2015-10-21 | 华电重工股份有限公司 | A kind of oil hydraulic cylinder mounting structure eliminating installation distortion |
| CN206513445U (en) * | 2017-02-10 | 2017-09-22 | 中国航发沈阳发动机研究所 | A kind of gas turbine obturages ring structure |
| CN207426871U (en) * | 2017-10-30 | 2018-05-29 | 南京磁谷科技有限公司 | The radial direction magnetic bearing holder structure of thermal expansion deformation is compensated in magnetic suspension motor |
-
2017
- 2017-10-30 CN CN201711034617.5A patent/CN107659036A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3692372A (en) * | 1971-06-24 | 1972-09-19 | Gen Electric | Thermally expansible bearing assembly |
| JPS5899247A (en) * | 1981-12-07 | 1983-06-13 | Sanyo Electric Co Ltd | Fixing device of motor iron core |
| JPH0425621A (en) * | 1990-05-16 | 1992-01-29 | Fujitsu Ltd | Support structure for low heat distortion bearing |
| JPH11288551A (en) * | 1998-04-01 | 1999-10-19 | Matsushita Electric Ind Co Ltd | Spindle motor |
| JP3039539B1 (en) * | 1998-12-21 | 2000-05-08 | 日本電気株式会社 | Thermal stress absorption type support mechanism |
| US20040109626A1 (en) * | 2002-12-09 | 2004-06-10 | Caterpillar Inc. | Bearing mounting flange having flexibility pocket |
| KR20040092589A (en) * | 2003-04-24 | 2004-11-04 | 엘지전선 주식회사 | heat-expansion absorb type lead- frame |
| CN101695749A (en) * | 2009-10-20 | 2010-04-21 | 苏州有色金属研究院有限公司 | Frame baffle for fixing electromagnetic casting magnetic field-aided generator |
| CN204716658U (en) * | 2015-03-26 | 2015-10-21 | 华电重工股份有限公司 | A kind of oil hydraulic cylinder mounting structure eliminating installation distortion |
| CN206513445U (en) * | 2017-02-10 | 2017-09-22 | 中国航发沈阳发动机研究所 | A kind of gas turbine obturages ring structure |
| CN207426871U (en) * | 2017-10-30 | 2018-05-29 | 南京磁谷科技有限公司 | The radial direction magnetic bearing holder structure of thermal expansion deformation is compensated in magnetic suspension motor |
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