CN203984143U - The anti-galvanic corrosion of bearing of motor mechanism - Google Patents
The anti-galvanic corrosion of bearing of motor mechanism Download PDFInfo
- Publication number
- CN203984143U CN203984143U CN201420315133.3U CN201420315133U CN203984143U CN 203984143 U CN203984143 U CN 203984143U CN 201420315133 U CN201420315133 U CN 201420315133U CN 203984143 U CN203984143 U CN 203984143U
- Authority
- CN
- China
- Prior art keywords
- motor
- metallic plate
- plate framework
- slip ring
- conducting slip
- 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.)
- Expired - Fee Related
Links
Landscapes
- Motor Or Generator Frames (AREA)
Abstract
The utility model relates to the anti-galvanic corrosion of a kind of bearing of motor mechanism, and it comprises the pillar conducting slip ring that is arranged on motor rotor shaft rear end face and is electrically connected to motor rotor shaft, on the rear end cap of motor field frame, by many metallic conduction support bars, one metallic plate framework is installed and this metallic plate framework is electrically connected to motor field frame, the internal diameter that offers the through hole that passes for pillar conducting slip ring and this through hole on the spider of metallic plate framework is greater than the external diameter of pillar conducting slip ring, the elasticity carbon brush that a plurality of rings are located at pillar conducting slip ring border is installed on the spider of metallic plate framework, each elasticity carbon brush is all electrically connected to the section of passing of metallic plate framework and pillar conducting slip ring, on the spider of metallic plate framework, also spiral-lock has one can include the section of passing of pillar conducting slip ring and each elasticity carbon brush in dust cover in it.The utility model has fundamentally solved bearing galvanic corrosion problem, and overall structure is simple, easy to install, and the mechanical connection of parts is all very reliable and stable with electrical connection.
Description
Technical field
The utility model relates to electric motors, the mechanism of the anti-galvanic corrosion of a kind of bearing of motor specifically.
Background technology
Bearing of motor galvanic corrosion problem is the major reason that affects motor precision and useful life, and it has increased the maintenance cost of motor and workman's labour intensity.Bearing galvanic corrosion refers to when electric current flows between the bearing race of cycle rotation and rolling element, by lubricating oil film, sends spark, makes bearing race surface occur partial melting, forms the tabular phenomenon of similar laundry.
The basic reason that causes bearing of motor galvanic corrosion is the existence of motor reel voltage, between bearing of motor inner ring and outer ring, has potential difference.The reason that motor reel voltage produces has the following aspects:
1) difference of motor stator winding physical characteristic, comprises that winding direct current resistance difference, winding are to casing insulation resistance value difference, winding distributional difference, junction capacitance distributional difference etc.Due to the difference of above-mentioned physical characteristic, after motor stator winding electrifying, occur that magnetic circuit is uneven, thereby produce shaft voltage.
2), when frequency converter adopts copped wave or inverting to power to motor winding, the voltage of pulsation also can cause motor stator winding to produce magnetic circuit energy imbalance, causes the increase of shaft voltage.
3) motor stator winding, iron core and casing form electric capacity after applying voltage, when the two ends of this capacitor apply the pulsating voltage by chopper or inverter control, between winding, iron core and casing, can produce leakage current, this electric current flows through bearing of motor.
The shaft voltage that causes bearing galvanic corrosion is the result of above-mentioned several combined factors effects, and the frequency of its pulsation is consistent with the chopper of frequency converter or inverter frequency.
The scheme that solves now bearing galvanic corrosion mainly contains following two kinds: 1) chassics earth, this scheme can only solve the shaft voltage that partly causes the uneven generation of magnetic circuit due to the difference of motor winding physical characteristic, and this is not the main cause that bearing of motor galvanic corrosion produces, so chassics earth can not solve bearing galvanic corrosion problem.2) adopt insulation bearing, this kind of bearing outer ring covers one deck special insulation material, stoped shaft current to flow through bearing, reach the object of control bearing galvanic corrosion, this scheme is to be only the passive galvanic corrosion of avoiding, can not fundamentally eliminate the factor that causes galvanic corrosion, and insulation bearing cost is very high, scheme implementation effect is unsatisfactory.
Utility model content
The technical problems to be solved in the utility model is to provide and a kind ofly can fundamentally solves that bearing galvanic corrosion problem and overall structure are simple, the parts stable connection anti-galvanic corrosion of bearing of motor mechanism reliable, easy to install.
For solving the problems of the technologies described above, the design feature of the anti-galvanic corrosion of bearing of motor of the present utility model mechanism is to comprise the pillar conducting slip ring that is arranged on motor rotor shaft rear end face and is electrically connected to motor rotor shaft, on the rear end cap of motor field frame, by many metallic conduction support bars, one metallic plate framework is installed and this metallic plate framework is electrically connected to motor field frame, the internal diameter that offers the through hole that passes for pillar conducting slip ring and this through hole on the spider of metallic plate framework is greater than the external diameter of pillar conducting slip ring, the elasticity carbon brush that a plurality of rings are located at pillar conducting slip ring border is installed on the spider of metallic plate framework, each elasticity carbon brush is all electrically connected to the section of passing of metallic plate framework and pillar conducting slip ring, on the spider of metallic plate framework, also spiral-lock has one can include the section of passing of pillar conducting slip ring and each elasticity carbon brush in dust cover in it.
Adopt said structure, utilize pillar conducting slip ring, carbon brush, the conductive components such as metallic conduction support bar and metallic plate framework, by forming between motor field frame and motor rotor shaft, be electrically connected to, during motor operation, the shaft voltage being produced by various factors can be released in time, make inner ring and the outer ring of bearing realize equipotential, potential difference has not existed, shaft voltage has not just existed yet, thereby can not produce the electric current that flows through bearing, fundamentally avoided the generation of bearing galvanic corrosion, make bearing can be in the situation that not lacking lubricating grease stable operation to designed life, saved maintenance cost, reduced labour intensity, improved economic benefit, utilize many metallic conduction support bars and metallic plate framework to form support, Stability Analysis of Structures, utilizes a plurality of elasticity carbon brush to coordinate with conducting slip ring, has guaranteed the reliability being electrically connected to, dust cover is set, has avoided dust enter and affect electrically contacting of carbon brush and conducting slip ring, structure is more reliable, longer service life.The structure of this programme can the direct rearward end at motor install additional in motor manufacture process, simultaneously, because the rear end cap of motor field frame is to be connected with the radiation shell at housing middle part by bolt, in the utility model, the threaded mounting hole that metallic conduction support bar can directly be used on housing rear end cap is installed, do not need additional processing screwed hole, thereby can directly install additional existing motor, do not need to change the structure of existing motor.
The rearward end of described motor rotor shaft is provided with radiator fan, and the rearward end of motor field frame is provided with fan shroud, offers ventilative window on the rear end face of fan shroud, on ventilative window, dustproof filter screen is installed.Radiator fan, both for motor heat dissipation, is also conducive to this device radiation.Ventilative window is set and makes circulation of air, guarantee radiating effect.
Described elastic brush is arranged in a U-shaped metallic channel and between elasticity carbon brush and U-shaped metallic channel and is connected with metal spring, and U-shaped metallic channel is arranged on metallic plate by bolt, and U-shaped metallic channel is all electrically connected to metallic plate and elasticity carbon brush.Elasticity carbon brush utilizes metal spring to install, and has further guaranteed the reliability electrically contacting.
The spider circumferential interval of described metallic plate framework is connected with many strip metals brace, through hole is opened in the center of spider, the end of metal connecting sheet offers the corresponding sheet body opening installing of rearward end with described metallic conduction support bar, and the front end spiral shell of metallic conduction support bar is contained in the rearward end of motor field frame.This kind of metallic plate simple in structure, easy to process, has also facilitated the installation of carbon brush simultaneously.
Described elasticity carbon brush arranges four altogether.The border that four elasticity carbon brush are centered around conducting slip ring is set, has guaranteed to electrically contact reliably.
In sum, the utility model has fundamentally solved bearing galvanic corrosion problem, and overall structure is simple, easy to install, and the mechanical connection of parts and electrical connection are all very reliable and stable.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is the structural representation of a kind of execution mode of the present utility model;
Fig. 2 is the structure enlarged drawing in broken circle in Fig. 1;
Fig. 3 is the structural representation of another kind of execution mode of the present utility model;
Fig. 4 is the structural representation of metallic plate framework in the utility model.
Embodiment
With reference to accompanying drawing, the anti-galvanic corrosion of bearing of motor of the present utility model mechanism comprises and is arranged on motor rotor shaft 1 rear end face and the pillar conducting slip ring 2 being electrically connected to motor rotor shaft 1, on the rear end cap of motor field frame, by many metallic conduction support bars 4, a metallic plate framework 5 is installed and this metallic plate framework 5 is electrically connected to motor field frame 3, the internal diameter that offers the through hole 50 that passes for pillar conducting slip ring 2 and this through hole 50 on the spider of metallic plate framework 5 is greater than the external diameter of pillar conducting slip ring 2, the elasticity carbon brush 6 that a plurality of rings are located at pillar conducting slip ring 2 borders is installed on the spider 51 of metallic plate framework 5, each elasticity carbon brush 6 is all electrically connected to the section of passing of metallic plate framework 5 and pillar conducting slip ring 2, on the spider of metallic plate framework 5, also spiral-lock has one can include the section of passing of pillar conducting slip ring 2 and each elasticity carbon brush 6 in dust cover 7 in it.Wherein, elasticity carbon brush 6 is preferably and arranges four.Utilize four elasticity carbon brush 6 to be centered around the border of conducting slip ring 2, guaranteed to electrically contact reliably.
In said structure, utilize the conductive components such as pillar conducting slip ring 2, carbon brush 6, metallic conduction support bar 4 and metallic plate framework 5, to between motor field frame 3 and motor rotor shaft 1, form and be electrically connected to, during motor operation, the shaft voltage being produced by various factors can be released in time, makes the inner ring of bearing and outer ring realize equipotential, potential difference has not existed, shaft voltage has not just existed yet, thereby can not produce the electric current that flows through bearing, has fundamentally avoided the generation of bearing galvanic corrosion.The structure of this programme can be directly installs additional in the rearward end of motor, also can reequip existing motor, utilize many metallic conduction support bars 4 and metallic plate 5 to form support, Stability Analysis of Structures, utilize a plurality of elasticity carbon brush 6 to coordinate with conducting slip ring 2, guaranteed the reliability being electrically connected to.Dust cover 7 is set, has avoided dust enter and affect electrically contacting of carbon brush and conducting slip ring, structure is more reliable, longer service life.
Another kind of execution mode of the present utility model has been shown in Fig. 3, the difference of this execution mode and Fig. 1 is installed metallic conduction support bar 4, because the rear end cap of motor field frame 3 is to be connected with the radiation shell at housing middle part by bolt, in Fig. 3, the threaded mounting hole that metallic conduction support bar 4 is directly used on housing rear end cap is installed, do not need additional processing screwed hole, thereby can directly install additional existing motor, do not need to change the structure of existing motor.
With reference to accompanying drawing, the rearward end of motor rotor shaft 1 is provided with radiator fan 8, and the rearward end of motor field frame 3 is provided with fan shroud 9, offers ventilative window on the rear end face of fan shroud 9, and dustproof filter screen 10 is installed on ventilative window.Radiator fan 8, both for motor heat dissipation, is also conducive to this device radiation, ventilative window is set and makes circulation of air, guarantees radiating effect, and dustproof filter screen 10 is for filtering dust.
Elasticity carbon brush 6 can be used carbon brush holder of the prior art to install, and carbon brush holder is electrically connected to metallic plate framework 5.With reference to accompanying drawing, elastic brush 6 is arranged in a U-shaped metallic channel 11 and is connected with metal spring 12 between elasticity carbon brush 6 and U-shaped metallic channel 11, U-shaped metallic channel 11 is arranged on metallic plate 5 by bolt, and U-shaped metallic channel 11 is all electrically connected to metallic plate 5 and elasticity carbon brush 6.Elasticity carbon brush 6 utilizes metal spring 12 to install, and has further guaranteed the reliability electrically contacting.
With reference to accompanying drawing, spider 51 circumferential intervals of metallic plate framework 5 are connected with many strip metals brace 52, through hole 50 is opened in the center of spider 51, the end of metal connecting sheet 52 offers the corresponding sheet body opening 520 installing of rearward end with described metallic conduction support bar 4, and the front end spiral shell of metallic conduction support bar 4 is contained in the rearward end of motor field frame 3.Spider 51 is a circular slab, and through hole 50 is opened in the center of circular slab, adopts metallic plate framework and the metal connecting sheet of this kind of structure, simple in structure, and processing and fabricating and installation are all convenient, and do not take up room.
In sum, the utility model is not limited to above-mentioned embodiment.Those skilled in the art, not departing under the prerequisite of spirit and scope of the present utility model, can do some changes and modification.Protection range of the present utility model should be as the criterion with claim of the present utility model.
Claims (5)
1. the anti-galvanic corrosion of a bearing of motor mechanism, is characterized in that comprising being arranged on motor rotor shaft (1) rear end face and the pillar conducting slip ring (2) being electrically connected to motor rotor shaft (1), on the rear end cap of motor field frame, by many metallic conduction support bars (4), a metallic plate framework (5) is installed and this metallic plate framework (5) is electrically connected to motor field frame (3), on the spider of metallic plate framework (5), offer the external diameter that is greater than pillar conducting slip ring (2) for the internal diameter of the through hole (50) that passes of pillar conducting slip ring (2) and this through hole (50), the elasticity carbon brush (6) that a plurality of rings are located at pillar conducting slip ring (2) border is installed on the spider (51) of metallic plate framework (5), each elasticity carbon brush (6) is all electrically connected to the section of passing of metallic plate framework (5) and pillar conducting slip ring (2), on the spider of metallic plate framework (5), also spiral-lock has one can include the section of passing of pillar conducting slip ring (2) and each elasticity carbon brush (6) in dust cover (7) in it.
2. the anti-galvanic corrosion of bearing of motor as claimed in claim 1 mechanism, the rearward end that it is characterized in that described motor rotor shaft (1) is provided with radiator fan (8), the rearward end of motor field frame (3) is provided with fan shroud (9), on the rear end face of fan shroud (9), offer ventilative window, dustproof filter screen (10) is installed on ventilative window.
3. the anti-galvanic corrosion of bearing of motor as claimed in claim 1 mechanism, it is characterized in that described elastic brush (6) be arranged in a U-shaped metallic channel (11) and elasticity carbon brush (6) and U-shaped metallic channel (11) between be connected with metal spring (12), it is upper that U-shaped metallic channel (11) is arranged on metallic plate framework (5) by bolt, and U-shaped metallic channel (11) is all electrically connected to metallic plate framework (5) and elasticity carbon brush (6).
4. the anti-galvanic corrosion of bearing of motor as claimed in claim 1 mechanism, spider (51) circumferential interval that it is characterized in that described metallic plate framework (5) is connected with many strip metals brace (52), through hole (50) is opened in the center of spider (51), the end of metal connecting sheet (52) offers the corresponding sheet body opening (520) installing of rearward end with described metallic conduction support bar (4), and the front end spiral shell of metallic conduction support bar (4) is contained in the rearward end of motor field frame (3).
5. the anti-galvanic corrosion of the bearing of motor mechanism as described in any one in claim 1-4, is characterized in that described elasticity carbon brush (6) arranges four altogether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420315133.3U CN203984143U (en) | 2014-06-13 | 2014-06-13 | The anti-galvanic corrosion of bearing of motor mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420315133.3U CN203984143U (en) | 2014-06-13 | 2014-06-13 | The anti-galvanic corrosion of bearing of motor mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203984143U true CN203984143U (en) | 2014-12-03 |
Family
ID=51981559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420315133.3U Expired - Fee Related CN203984143U (en) | 2014-06-13 | 2014-06-13 | The anti-galvanic corrosion of bearing of motor mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203984143U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821691A (en) * | 2015-04-23 | 2015-08-05 | 广东威灵电机制造有限公司 | Motor bearing electric corrosion-prevention structure and plastic packaging brushless direct current motor |
| CN104821683A (en) * | 2015-04-23 | 2015-08-05 | 广东威灵电机制造有限公司 | Motor bearing electric corrosion-prevention structure and plastic packaging brushless direct current motor |
| CN106132125A (en) * | 2016-06-16 | 2016-11-16 | 东莞市联洲知识产权运营管理有限公司 | A kind of convenient maintenance and the cabinet of dismounting scavenger fan |
| JP2016208813A (en) * | 2015-04-24 | 2016-12-08 | アスモ株式会社 | Motor drive control device for vehicle |
| CN106340993A (en) * | 2016-10-19 | 2017-01-18 | 江苏航天动力机电有限公司 | Structure of apparatus for eliminating shaft currents of motor |
| CN107017726A (en) * | 2016-01-28 | 2017-08-04 | 北京佩特来电器有限公司 | A kind of generator shroud and the alternating current generator with the shield |
| JP2017165520A (en) * | 2016-03-15 | 2017-09-21 | 株式会社日立製作所 | Passenger conveyor |
| CN113364222A (en) * | 2021-05-17 | 2021-09-07 | 联合汽车电子有限公司 | Grounding device, motor and vehicle |
-
2014
- 2014-06-13 CN CN201420315133.3U patent/CN203984143U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821691B (en) * | 2015-04-23 | 2017-06-30 | 广东威灵电机制造有限公司 | Anti- motor bearings electric corrosion structure and plastic-sealing brushless DC motor |
| CN104821683A (en) * | 2015-04-23 | 2015-08-05 | 广东威灵电机制造有限公司 | Motor bearing electric corrosion-prevention structure and plastic packaging brushless direct current motor |
| CN104821683B (en) * | 2015-04-23 | 2018-07-13 | 广东威灵电机制造有限公司 | Anti- motor bearings electric corrosion structure and plastic-sealing brushless DC motor |
| CN104821691A (en) * | 2015-04-23 | 2015-08-05 | 广东威灵电机制造有限公司 | Motor bearing electric corrosion-prevention structure and plastic packaging brushless direct current motor |
| JP2016208813A (en) * | 2015-04-24 | 2016-12-08 | アスモ株式会社 | Motor drive control device for vehicle |
| CN107017726A (en) * | 2016-01-28 | 2017-08-04 | 北京佩特来电器有限公司 | A kind of generator shroud and the alternating current generator with the shield |
| JP2017165520A (en) * | 2016-03-15 | 2017-09-21 | 株式会社日立製作所 | Passenger conveyor |
| CN107188014A (en) * | 2016-03-15 | 2017-09-22 | 株式会社日立制作所 | Apparatus of passenger conveyor |
| CN106132125A (en) * | 2016-06-16 | 2016-11-16 | 东莞市联洲知识产权运营管理有限公司 | A kind of convenient maintenance and the cabinet of dismounting scavenger fan |
| CN106132125B (en) * | 2016-06-16 | 2018-08-17 | 东莞市联洲知识产权运营管理有限公司 | A kind of cabinet for facilitating repair and dismantling scavenger fan |
| CN106340993A (en) * | 2016-10-19 | 2017-01-18 | 江苏航天动力机电有限公司 | Structure of apparatus for eliminating shaft currents of motor |
| CN113364222A (en) * | 2021-05-17 | 2021-09-07 | 联合汽车电子有限公司 | Grounding device, motor and vehicle |
| CN113364222B (en) * | 2021-05-17 | 2024-04-16 | 联合汽车电子有限公司 | Grounding device, motor and vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203984143U (en) | The anti-galvanic corrosion of bearing of motor mechanism | |
| CN206820675U (en) | Disc type electrostatic generator | |
| CN103795193B (en) | Hydraulic generator three-phase Large Copacity exchanges collector machine | |
| CN210693627U (en) | Brushless motor with dustproof structure | |
| CN206412879U (en) | A kind of integrated electric motor end cap | |
| CN205478427U (en) | Household electric fan convenient to dismantle | |
| CN206272403U (en) | A kind of excellent motor of cooling-down effect | |
| CN210404918U (en) | Mounting structure of vacuum pump motor front end housing | |
| CN115347813A (en) | Friction nanometer power generation device based on unpowered hood | |
| CN203942373U (en) | A kind of waterproof construction of motor | |
| CN107134896A (en) | Hydraulic generator rotor three-phase Large Copacity AC excitation brushgear | |
| CN203570621U (en) | Explosion-proof axial flow fan | |
| CN204312244U (en) | Portable cross flow fan generator | |
| CN207069822U (en) | Motor and the conductance exchange device for motor | |
| CN203774940U (en) | Oiling bearing traction fan motor for high-power locomotive | |
| CN208571794U (en) | A kind of motor sliding ring hood mounting structure | |
| CN202628403U (en) | Integrated lightning protection device for fan blade | |
| CN205478429U (en) | Household electric fan convenient to dismantle | |
| CN207304291U (en) | Frequency conversion all-in-one machine | |
| CN207251329U (en) | A kind of externally-wound type stator liner | |
| CN204835870U (en) | Washing machine is with single -phase asynchronous machine's end cover subassembly | |
| CN205724314U (en) | Expansible collector ring | |
| CN203288920U (en) | Tower-type electrically-conductive slip ring | |
| CN202749967U (en) | Vehicular silicon rectification generator easy for assembly and maintenance | |
| CN203911707U (en) | Anti-creeping series excited motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20200613 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |