CN110011149A - A kind of large-scale power transmission sliding ring structure that thermal stress resistance destroys - Google Patents
A kind of large-scale power transmission sliding ring structure that thermal stress resistance destroys Download PDFInfo
- Publication number
- CN110011149A CN110011149A CN201910360112.0A CN201910360112A CN110011149A CN 110011149 A CN110011149 A CN 110011149A CN 201910360112 A CN201910360112 A CN 201910360112A CN 110011149 A CN110011149 A CN 110011149A
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- CN
- China
- Prior art keywords
- thermal stress
- power transmission
- card slot
- washer
- stator
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/08—Slip-rings
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- Motor Or Generator Frames (AREA)
Abstract
The invention discloses the large-scale power transmission sliding ring structures that a kind of thermal stress resistance destroys, including rotor, stator, and wherein outer ring footstock is arranged in rotor top, and the outer ring footstock is suspended on dynamic cover by housing screw；First card slot is set on outer ring footstock top surface, the first elastic washer is set in first card slot；Base is set at the top of the stator, and fixing gasket mounting base at the top of the base is arranged the second card slot in the top surface of washer mounting base, places the second elastic washer in second card slot.The present invention compensated by the elastic telescopic of elastic washer metal and it is nonmetallic between size of expanding with heat and contract with cold it is poor, while discharging slip ring built-in thermal stress, can be good at protect slip ring stator rotor on non-metallic plastic part, with it from the influence of jerk.
Description
Technical field
The present invention relates to electric power slip rings, and in particular to a kind of large-scale power transmission sliding ring structure that thermal stress resistance destroys.
Background technique
Existing electric slip ring is generally small in size, and the requirement of working environment difference variation is relatively low, and inner structural members are heated
Change in size caused by swollen shrinkage influences is not obvious, therefore slip ring design does not consider built-in thermal stress problem substantially.However, leaching
Oily formula power transmission sliding ring internal height size 1.2m, practical service environment temperature is generally at -40 ~ 60 DEG C.Due to internal stator and turn
Sub- material of main part is the nonmetallic (thermal expansion coefficient 67.1 × 10 of epoxy-6), external frame material is metal stainless steel (thermal expansion system
Number 17.3 × 10-6), it is assumed that 10 DEG C assemble, when slip ring runs to maximum operating temperature, the nonmetal parts on stator rotor need by
Compress 2.4mm, it is most likely that by the nonmetallic direct pressure break of epoxy part；In minimum operating temperature, respectively will on stator rotor ring
Can have a fixing clearance of 2.4mm, the anti-seismic performance of extreme influence slip ring, cause nonmetallic epoxy part collide in vibration by
Damage.Therefore, large-scale oil-immersed type power transmission sliding ring design needs to consider thermal stress issues.
Summary of the invention
The purpose of the present invention is to provide the large-scale power transmission sliding ring structures that a kind of thermal stress resistance destroys.
The technical solution for realizing the aim of the invention is as follows: a kind of large-scale power transmission sliding ring structure that thermal stress resistance destroys, packet
Rotor, stator are included, wherein outer ring footstock is arranged in rotor top, and the outer ring footstock is suspended on dynamic cover by housing screw；?
First card slot is set on outer ring footstock top surface, the first elastic washer is set in first card slot；It is successively set at the top of the stator
Base and washer mounting base are set, the second card slot is set in the top surface of washer mounting base, the second elasticity is placed in second card slot
Washer.
Compared with prior art, the present invention its remarkable advantage is: the present invention respectively pre-installs on slip ring stator rotor ring
One elastic washer, compensated by the elastic telescopic of elastic washer metal and it is nonmetallic between size of expanding with heat and contract with cold it is poor, releasing
While putting slip ring built-in thermal stress, it can be good at protecting the non-metallic plastic part on slip ring stator rotor, with it from shake
The influence of dynamic impact.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the large-scale power transmission sliding ring of the present invention.
Fig. 2 is the partial enlarged view of the large-scale power transmission sliding ring of the present invention.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the present invention program is further illustrated, for the ease of the understanding of scheme,
The design that thermal stress resistance destruction is carried out on the basis of 201721895477.6 open slip rings, prevents the cunning that works under big temperature difference environment
Ring inner non-metallic influences due to compression embrittlement because expanding with heat and contract with cold, but design concept of the invention is applied equally to other cunnings
Ring structure.
As shown in Figure 1, slip ring since pedestal 13, to pivoting support 12, support frame 10, self-aligning ball bearing 9, moves lid 1, then
All it is metalwork to outer housing 11, and is Hard link between them.Therefore the position of dynamic lid 1 is expanding with heat and contract with cold by metalwork
It determines.Further, since deep groove ball bearing 6 be it is hardwired with dynamic lid 1, so the position of deep groove ball bearing 6 is also by metal
The decision of expanding with heat and contract with cold of part.
On the other hand, since pedestal 13, to the top of rotor 14, stator 15, body element is all epoxy resin, because
This, rotor 14, stator 15 overhead height be to be determined by expanding with heat and contract with cold for epoxy resin.
Since the deciding means of above two height and position are different, a kind of to be determined by expanding with heat and contract with cold for metal, one kind is by ring
The decision of expanding with heat and contract with cold of oxygen resin, thus between them cannot direct Hard link, otherwise will lead to epoxy resin part in thermal stress
Under be squeezed and crack.
But meanwhile can not allow the two there are the interfaces of difference in height to be excessively flexible coupling because will lead to structure in this way
Excessively loose, shock resistance is bad, and epoxy resin part can run because top lacks certain constraint to run under vibration
It goes, eventually leads to part vibration and split.
Therefore, the present invention installs spring energy-storage washer at interface, can be structure in no hardwired situation
Enough rigidity are provided, guarantee the globality and shock resistance of structure, concrete scheme is as shown enlarged in fig. 2.Thermal stress resistance destroys
Large-scale power transmission sliding ring structure, outer ring footstock 2, the outer ring footstock is wherein arranged in including rotor 14, stator 15 at the top of rotor 14
2 are suspended on dynamic lid 1 by housing screw 3；First card slot, setting in first card slot are set on 2 top surface of outer ring footstock
First elastic washer 7；Base 4 and washer mounting base 5 are set gradually at the top of the stator 15, is set in the top surface of washer mounting base 5
The second card slot is set, places the second elastic washer 8 in second card slot.
The present invention presss from both sides a circle elastic washer, a circle between stator 15 and deep groove ball bearing 6 between rotor 14 and dynamic lid 1
Elastic washer, by the elastic telescopic of the first elastic washer 7, the second elastic washer 8 compensate for metal and it is nonmetallic between heat expansion
Shrinkage size is poor, and when temperature is high, elastic washer can be pressed more, and when temperature is low, elastic washer can be pressed
It is a little less, but all in safe range.In this way, slip ring releases inner rotator 14, the thermal stress of stator 15 is concentrated,
So that nonmetal parts will not be both subject to crushing because of heat expansion, slip ring overall structure will not be made to become loose because of shrinkage.
In view of the installing space of elastic washer between ring footstock 2 and dynamic lid 1 and the shock resistance of slip ring, some implementations
In example, step is set, and housing screw 3 passes through the mounting hole of outer ring footstock 2, by 2 sets of outer ring footstock in platform on the housing screw 3
On the outside of rank, guarantee that outer ring footstock 2 is suspended on dynamic lid 1.
Since the elastic extension range of spring energy-storage sealing ring is big, and elasticity is moderate, in some embodiments, selects spring storage
Energy sealing ring both can guarantee that nonmetallic epoxy part was not pressurized crisp under high temperature as the first elastic washer 7 and the second elastic washer 8
It splits, also can guarantee that stator rotor ring is without assembly gap under low temperature.Meanwhile the rubber coatings of spring energy-storage sealing ring can also play resistance
Buddhist nun's damping effect, avoids external impact from impacting nonmetal parts.
As a kind of specific implementation, the spring energy-storage sealing ring that the present invention selects Guangzhou company, Saint-Gobain to produce, which is used as, to be shown
Example.Reinforced inside this sealing ring by spring, layers exterior is polytetrafluoroethylene (PTFE), oil resistant it is ageing-resistant and with moderate rigidity and
Damping characteristic, while discharging slip ring built-in thermal stress, additionally it is possible to the nonmetallic modeling on protection slip ring stator rotor well
Materials and parts, against the influence of jerk.
In view of the stability of structure, in some embodiments, the base 4 is fixed by screws in 15 top of stator.One
In a little embodiments, the washer mounting base 5 is fixed by screws in 4 top of base.
Claims (5)
1. the large-scale power transmission sliding ring structure that a kind of thermal stress resistance destroys, which is characterized in that including rotor (14), stator (15),
Outer ring footstock (2) are set at the top of middle rotor (14), the outer ring footstock (2) is suspended on dynamic lid (1) by housing screw (3)；
First card slot is set on outer ring footstock (2) top surface, the first elastic washer (7) are set in first card slot；The stator
(15) top sets gradually base (4) and washer mounting base (5), and the second card slot is arranged in the top surface of washer mounting base (5), described
The second elastic washer (8) are placed in second card slot.
2. the large-scale power transmission sliding ring structure that thermal stress resistance according to claim 1 destroys, which is characterized in that the compression spiral shell
Step is set on nail (3), and housing screw (3) passes through the mounting hole of outer ring footstock (2), outer ring footstock (2) is covered on the outside of step.
3. the large-scale power transmission sliding ring structure that thermal stress resistance according to claim 1 destroys, which is characterized in that first bullet
Property washer (7) and the second elastic washer (8) select spring energy-storage sealing ring.
4. the large-scale power transmission sliding ring structure that thermal stress resistance according to claim 1 destroys, which is characterized in that the base
(4) it is fixed by screws at the top of stator (15).
5. the large-scale power transmission sliding ring structure that thermal stress resistance according to claim 1 destroys, which is characterized in that the washer peace
Dress seat (5) is fixed by screws at the top of base (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910360112.0A CN110011149A (en) | 2019-04-30 | 2019-04-30 | A kind of large-scale power transmission sliding ring structure that thermal stress resistance destroys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910360112.0A CN110011149A (en) | 2019-04-30 | 2019-04-30 | A kind of large-scale power transmission sliding ring structure that thermal stress resistance destroys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110011149A true CN110011149A (en) | 2019-07-12 |
Family
ID=67175214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910360112.0A Pending CN110011149A (en) | 2019-04-30 | 2019-04-30 | A kind of large-scale power transmission sliding ring structure that thermal stress resistance destroys |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110011149A (en) |
Citations (14)
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| US3216262A (en) * | 1962-10-18 | 1965-11-09 | Sperry Rand Corp | Anti-friction electrical power transmission apparatus |
| US5562349A (en) * | 1994-11-15 | 1996-10-08 | Honeywell Inc. | Bearing assembly having thermal compensation |
| US5585682A (en) * | 1993-11-10 | 1996-12-17 | Sundstrand Corporation | Thermally compensated assembly for a generator |
| JP2000078814A (en) * | 1998-09-01 | 2000-03-14 | Nippon Densan Corp | Spindle motor for driving recording disk |
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| US6628477B1 (en) * | 1999-04-23 | 2003-09-30 | Precision Motors Deutsche Minebea Gmbh | Spindle motor with temperature compensation |
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| DE102011083508A1 (en) * | 2011-09-27 | 2013-03-28 | Zf Friedrichshafen Ag | Device for mounting the rolling bearing, particularly a needle bearing, on a shaft or in a housing, has central longitudinal axis, and inner portion that is centrally mounted in outer portion relative to center longitudinal axis |
| DE102012218522A1 (en) * | 2012-10-11 | 2014-04-17 | Schaeffler Technologies Gmbh & Co. Kg | Bearing arrangement for electric drive e.g. for driving wheels of vehicle, has supporting portions, socket elements and bearing rings arranged in rotation axis to overlap in radial direction, where bearing rings are formed as inner races |
| CN204164573U (en) * | 2014-10-13 | 2015-02-18 | 江苏彩阳环保科技有限公司 | Non-maintaining expansion joint for steel inner cylinder of chimney |
| US20150184584A1 (en) * | 2013-12-27 | 2015-07-02 | Denso Corporation | Rotational drive apparatus |
| CN207124356U (en) * | 2017-09-08 | 2018-03-20 | 深圳市晶沛电子有限公司 | Circuit jointing and its vibration resistance conducting slip ring |
| CN108233132A (en) * | 2017-12-29 | 2018-06-29 | 扬州海通电子科技有限公司 | A kind of inner supporting structure of large size power transmission sliding ring |
| CN210296822U (en) * | 2019-04-30 | 2020-04-10 | 扬州海通电子科技有限公司 | Large-scale transmission slip ring structure resistant to thermal stress damage |
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2019
- 2019-04-30 CN CN201910360112.0A patent/CN110011149A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3216262A (en) * | 1962-10-18 | 1965-11-09 | Sperry Rand Corp | Anti-friction electrical power transmission apparatus |
| US5585682A (en) * | 1993-11-10 | 1996-12-17 | Sundstrand Corporation | Thermally compensated assembly for a generator |
| US5562349A (en) * | 1994-11-15 | 1996-10-08 | Honeywell Inc. | Bearing assembly having thermal compensation |
| JP2000078814A (en) * | 1998-09-01 | 2000-03-14 | Nippon Densan Corp | Spindle motor for driving recording disk |
| EP1020654A1 (en) * | 1999-01-16 | 2000-07-19 | Mannesmann VDO Aktiengesellschaft | Axle bearing device with lash adjustment |
| US6628477B1 (en) * | 1999-04-23 | 2003-09-30 | Precision Motors Deutsche Minebea Gmbh | Spindle motor with temperature compensation |
| CN102141081A (en) * | 2011-02-12 | 2011-08-03 | 四川达宇特种车辆制造厂 | Miniature engine rotor bearing pre-tightening system |
| DE102011083508A1 (en) * | 2011-09-27 | 2013-03-28 | Zf Friedrichshafen Ag | Device for mounting the rolling bearing, particularly a needle bearing, on a shaft or in a housing, has central longitudinal axis, and inner portion that is centrally mounted in outer portion relative to center longitudinal axis |
| DE102012218522A1 (en) * | 2012-10-11 | 2014-04-17 | Schaeffler Technologies Gmbh & Co. Kg | Bearing arrangement for electric drive e.g. for driving wheels of vehicle, has supporting portions, socket elements and bearing rings arranged in rotation axis to overlap in radial direction, where bearing rings are formed as inner races |
| US20150184584A1 (en) * | 2013-12-27 | 2015-07-02 | Denso Corporation | Rotational drive apparatus |
| CN204164573U (en) * | 2014-10-13 | 2015-02-18 | 江苏彩阳环保科技有限公司 | Non-maintaining expansion joint for steel inner cylinder of chimney |
| CN207124356U (en) * | 2017-09-08 | 2018-03-20 | 深圳市晶沛电子有限公司 | Circuit jointing and its vibration resistance conducting slip ring |
| CN108233132A (en) * | 2017-12-29 | 2018-06-29 | 扬州海通电子科技有限公司 | A kind of inner supporting structure of large size power transmission sliding ring |
| CN210296822U (en) * | 2019-04-30 | 2020-04-10 | 扬州海通电子科技有限公司 | Large-scale transmission slip ring structure resistant to thermal stress damage |
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| 邹天恺等: "大功率电滑环内部支撑架的力学分析与设计优化", 《舰船电子对抗》, vol. 40, no. 4 * |
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