CN102377270A - Insulating end cap applied to motor - Google Patents
Insulating end cap applied to motor Download PDFInfo
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- CN102377270A CN102377270A CN2010102554780A CN201010255478A CN102377270A CN 102377270 A CN102377270 A CN 102377270A CN 2010102554780 A CN2010102554780 A CN 2010102554780A CN 201010255478 A CN201010255478 A CN 201010255478A CN 102377270 A CN102377270 A CN 102377270A
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- end cap
- face
- nose circle
- circular end
- circle lid
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Abstract
The invention discloses an insulating end cap applied to a motor, wherein the insulating end cap comprises an external circular end cap and an inner circular end cap. An outer circumferential surface of the inner circular end cap is in a first-level stepped shape; and a plurality of screw holes are uniformly arranged on a step end surface of the inner circular end cap. Installation through holes that are corresponded to the screw holes on the inner circular end cap are arranged on the end surface of the external circular end cap; and the external circular end cap is sleevedly installed on an outer circumferential surface of a boss of the inner circular end cap as well as the external circular end cap and the inner circular end cap are connected into one by a plurality of bolts. An insulating layer, which is manufactured by an alkali-free glass fabric, is arranged on the inner circumferential surface of the inner circular end cap, the step end surface of the inner circular end cap, the outer circumferential surface of the boss of the inner circular end cap, and a continuous external circular end surface of the outer circumferential surface of the boss; insulating sleeves are arranged between the installation through holes of the external circular end cap and the bolts; insulating pads are arranged between the outer end surface of the of the external circular end cap and the bolts, so that the the external circular end cap is separated from the inner circular end cap. According to the insulating end cap provided in the invention, it can be prevented that a shaft current generates electro erosion on a bearing; and meanwhile, the insulating performance of the insulating end cap itself and the heat dispersion performance of the bearing can meet correlated indexes and technological requirements.
Description
Technical field
The present invention relates to a kind of insulated end cover that is used for motor.
Background technology
Be used for the motor of wind power generation because all the year round in broad field work, in the adverse circumstances such as marine salt fog, humidity, environmental factor is very big to the electrical machine insulation Effect on Performance.In addition, the shaft current that motor produces when rotating will produce galvano-cautery to motor bearings, thereby reduce the useful life of motor.If general rolling bearing is replaced by the generation that insulation bearing can suppress shaft current; But China's insulation bearing also will lean on import at present; Not only the import delivery cycle is grown, is cost an arm and a leg; And cost performance is unreasonable, make motor cost swash acute the rising, and the performance of some imported bearing can not satisfy existing user's correlated condition and requirement.
In view of the above problems, the technical staff of the industry improves the structure of end cap.The existing structure that is used for the insulated end cover of motor comprises front end housing and bearing holder (housing, cover); Connect through bolt between front end housing and the bearing holder (housing, cover); Be provided with insulating washer between the contact-making surface of front end housing and bearing holder (housing, cover), bolt is provided with insulating sleeve outward, is provided with insulation spacer between the head end of bolt and the front end housing.Between front end housing, bearing holder (housing, cover), bolt, be provided with insulating washer, insulating sleeve, insulation spacer, front end housing and bearing holder (housing, cover) separated through bolt.Though the end cap of this structure can prevent shaft current and will produce galvano-cautery to bearing; Can plain bearing be substituted insulation bearing; Motor cost is reduced, but the heat radiation index of the insulation property of end cap itself and bearing can't satisfy relevant index, can not adapt under the adverse circumstances and use.
Summary of the invention
The objective of the invention is in order to solve in the current rolling bearing (comprising imported bearing); Also do not satisfy the problem such as rolling bearing and electrical machine insulation heat radiation of motor correlated condition; Thereby a kind of insulated end cover that is used for motor is provided; It can prevent that shaft current from producing galvano-cautery to bearing, makes the insulation property of itself and the heat radiation index of bearing enough satisfy relevant index again.
The technical scheme that realizes above-mentioned purpose is: a kind of insulated end cover that is used for motor, comprise cylindrical end cap, interior nose circle lid, and the outer circumference surface of said interior nose circle lid is the one-level stairstepping, is provided with some screws in uniform way on the step end face of said interior nose circle lid; The end face of said cylindrical end cap is provided with the corresponding installation through holes of screw on the step end face that covers with said interior nose circle; Said cylindrical end cap be sleeved on said on the boss outer circumference surface of nose circle lid and through some bolts with said in nose circle cover and fuse.Wherein: the inner circumferential surface of nose circle lid, step end face, boss outer circumference surface reach with the continuous cylindrical end face of boss outer peripheral face and are provided with the insulating barrier that one deck is processed by alkali-free glass wool cloth in said; Be provided with insulating sleeve between the installation through holes of said cylindrical end cap and the said bolt; Be provided with insulation spacer between the outer face of said cylindrical end cap and the head of said bolt, so that said cylindrical end cap and said interior nose circle lid separate.
The above-mentioned insulated end cover that is used for motor; Wherein, The inner circumferential surface of nose circle lid in said, step end face, boss outer circumference surface and with the continuous cylindrical end face of boss outer circumference surface on be respectively equipped with the swallow-tail form annular groove; Be respectively equipped with the dovetail flanges ring that matees with said swallow-tail form annular groove on the outer surface of inner circumferential surface, step end face, boss outer circumference surface and the cylindrical end face of nose circle lid in said insulating barrier is said relatively, cover so that said insulating barrier can be fixed on said interior nose circle securely.
The above-mentioned insulated end cover that is used for motor, wherein, the swallow-tail form annular groove on the step end face of said interior nose circle lid is located at the inboard of said screw.
The above-mentioned insulated end cover that is used for motor; Wherein, Be located at said in said insulating barrier on the inner circumferential surface of nose circle lid account for said in the nose circle lid inner circumferential surface length 3/4ths, be located at said in said insulating barrier on the cylindrical end face of nose circle lid account for said in the nose circle lid cylindrical end face radical length 5/6ths.
The above-mentioned insulated end cover that is used for motor wherein, also is provided with between the inner face of said cylindrical end cap and the said insulating barrier and is enclosed within the outer insulating washer of said insulating sleeve.
The above-mentioned insulated end cover that is used for motor wherein, also is provided with a sleeve between the internal circular surfaces of said insulating barrier and said cylindrical end cap, said cylindrical end cap is sleeved on the external peripheral surface of this sleeve.
The above-mentioned insulated end cover that is used for motor wherein, also is provided with spring steel packing ring and flat steel washer successively between the head of said bolt and the said insulation spacer.
The above-mentioned insulated end cover that is used for motor, wherein, the screw on the step end face of said interior nose circle lid is a blind hole.
The present invention is used for the technical scheme of the insulated end cover of motor, realizes the purpose that insulate through between cylindrical, interior nose circle lid and bolt, being provided with insulating barrier that alkali-free glass wool cloth processes and insulating sleeve.This end cap can be after installing common rolling bearing; Can effectively prevent of the galvano-cautery of the shaft current of motor generation to motor bearings; Can make that again the heat transfer performance of bearing is better, thereby effectively prolong the life-span of bearing life and motor, can behind the insulation bearing of replacement import, reduce the production cost of motor; Can shorten the production cycle of motor again, guarantee client's satisfaction.Because circle one in the whole end cap cylindrical, easy accessibility makes that the maintenance cost cost in whole motor reduces greatly.
Description of drawings
Fig. 1 is the structural representation that is used for the insulated end cover of motor of the present invention;
Fig. 2 is the A-A profile that is used for the insulated end cover of motor of the present invention;
Fig. 3 is the enlarged drawing of I portion among Fig. 2.
Embodiment
In order to understand technical scheme of the present invention better, below through concrete instance and combine accompanying drawing at length to explain:
See also Fig. 1 to Fig. 3, the present invention is a kind of insulated end cover that is used for motor, comprises cylindrical end cap 1, interior nose circle lid 5, insulating barrier 2, insulating washer 3, sleeve 4, insulating sleeve 6, insulation spacer 7, plain washer 8, spring washer 9 and some bolts 10.Wherein:
The outer circumference surface of interior nose circle lid 5 is the one-level stairstepping, in this, is provided with some screws in uniform way on the step end face 50 of nose circle lid 5, and these screws are blind hole, so that the end cap outer surface smoother is attractive in appearance;
The end face of cylindrical end cap 1 is provided with the corresponding installation through holes of screw on the step end face 50 with interior nose circle lid 5;
Insulating barrier 2 is processed by alkali-free glass wool cloth, the inner circumferential surface 51 of nose circle lid 5 in it is located at, step end face 50, boss outer circumference surface 52 and with the continuous cylindrical end face 53 of boss outer circumference surface 52 on;
Sleeve 4 hot jackets are between the inner circumferential surface 12 of insulating barrier 2 and cylindrical end cap 1;
In insulating barrier 2 in being located on the inner circumferential surface 51 of nose circle lid 5 accounts for 3/4ths of inner circumferential surface 51 length of nose circle lid 5; In insulating barrier 2 accounts on the cylindrical end face 53 of nose circle lid 5 in being located at about 5/6ths of cylindrical end face 53 radical lengths of nose circle lid 5;
Insulating sleeve 6 is installed in the installation through holes of the lid of nose circle outside 1; Bolt 10 is fixed in the insulating sleeve 6; Insulation spacer 7 is installed between the head of outer face and bolt 10 of cylindrical end cap 1, and the centre is lined with insulation spacer 8, makes bolt 10 and cylindrical end cap 1 be spaced from each other;
Insulating washer 3 is located between seam face 11 and the insulating barrier 2 of cylindrical end cap 1 and integral body is enclosed within outside the insulating sleeve 6; Make like this between the step end face 50 of seam face 11 and interior nose circle lid 5 of cylindrical end cap 1 under through insulating barrier 2 situations spaced apart from each other, to be spaced from each other through insulating washer 3 again, make insulation property better;
Spring steel packing ring 9 and flat steel washer 10 are enclosed between the head of insulation spacer 7 and bolt 10 successively.
For insulating barrier 2 is fixed on the interior nose circle lid 5 securely; The inner circumferential surface 51 of interior nose circle lid, step end face 50, external peripheral surface 52 and with the continuous cylindrical end face 53 of external peripheral surface 52 on offer a dovetail annular groove 54 respectively, wherein be positioned at nose circle and cover the inboard that dovetail annular groove 54 on 5 the step end face 50 is located at screw.Insulating barrier 2 mutually internally the inner circumferential surface 51 of nose circle lid 5, step end face 50, boss outer circumference surface 52 and with the outer surface of the continuous cylindrical end face 53 of boss outer circumference surface 52 on be respectively equipped with one with the dovetail flanges ring 20 of swallow-tail form annular groove 54 couplings; Can fixed insulation layer 2 after the dovetail flanges ring 20 of insulating barrier 2 is embedded in the dovetail annular groove 54, loosening to prevent that insulating barrier 2 from occurring.
The end cap that assembles through above-mentioned part again through VPI wholely soak, oven dry, processed, the insulation property that reach are very good.
The inner face of cylindrical end cap 1 has been ordered anti-dismounting nameplate, and purpose should be dismantled the insulating barrier that causes for effective minimizing and damage.The outer face of cylindrical end cap 1 is welded with joint hinge, the handling and the installation of convenient whole end cap.
The insulated end cover that is used for motor of the present invention can reach and effectively prevents the galvano-cautery of shaft current to motor bearings after common rolling bearing is installed, and therefore can substitute the insulation bearing of import.
The insulated end cover that is used for motor of the present invention has solved the problem of the shaft current of existing motor existence to the galvano-cautery of motor bearings; Marine salt fog; Adverse circumstances factors such as humidity do not have the problem of the insulation bearing that satisfies correlated condition as yet to the big problem of insulation property influence of motor in the heat dissipation problem of the rolling bearing of motor and the present entrance rolling bearing.
Those of ordinary skill in the art will be appreciated that; Above embodiment is used for explaining the present invention; And be not to be used as qualification of the present invention; As long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of the above embodiment.
Claims (8)
1. an insulated end cover that is used for motor comprises cylindrical end cap, interior nose circle lid, and the outer circumference surface of said interior nose circle lid is the one-level stairstepping, is provided with some screws in uniform way on the step end face of said interior nose circle lid; The end face of said cylindrical end cap is provided with the corresponding installation through holes of screw on the step end face that covers with said interior nose circle; Said cylindrical end cap be sleeved on said on the boss outer circumference surface of nose circle lid and through some bolts with said in nose circle cover and fuse, it is characterized in that,
The inner circumferential surface of nose circle lid, step end face, boss outer circumference surface reach with the continuous cylindrical end face of boss outer peripheral face and are provided with the insulating barrier that one deck is processed by alkali-free glass wool cloth in said; Be provided with insulating sleeve between the installation through holes of said cylindrical end cap and the said bolt; Be provided with insulation spacer between the outer face of said cylindrical end cap and the head of said bolt, so that said cylindrical end cap and said interior nose circle lid separate.
2. the insulated end cover that is used for motor according to claim 1; It is characterized in that; The inner circumferential surface of nose circle lid in said, step end face, boss outer circumference surface and with the continuous cylindrical end face of boss outer circumference surface on be respectively equipped with the swallow-tail form annular groove; Be respectively equipped with the dovetail flanges ring that matees with said swallow-tail form annular groove on the outer surface of inner circumferential surface, step end face, boss outer circumference surface and the cylindrical end face of nose circle lid in said insulating barrier is said relatively, cover so that said insulating barrier can be fixed on said interior nose circle securely.
3. the insulated end cover that is used for motor according to claim 2 is characterized in that, the swallow-tail form annular groove on the step end face of said interior nose circle lid is located at the inboard of said screw.
4. the insulated end cover that is used for motor according to claim 1; It is characterized in that; Be located at said in said insulating barrier on the inner circumferential surface of nose circle lid account for said in the nose circle lid inner circumferential surface length 3/4ths, be located at said in said insulating barrier on the cylindrical end face of nose circle lid account for said in the nose circle lid cylindrical end face radical length 5/6ths.
5. the insulated end cover that is used for motor according to claim 1 is characterized in that, also is provided with between the inner face of said cylindrical end cap and the said insulating barrier to be enclosed within the outer insulating washer of said insulating sleeve.
6. the insulated end cover that is used for motor according to claim 1 is characterized in that, also is provided with a sleeve between the internal circular surfaces of said insulating barrier and said cylindrical end cap, and said cylindrical end cap is sleeved on the external peripheral surface of this sleeve.
7. the insulated end cover that is used for motor according to claim 1 is characterized in that, also is provided with spring steel packing ring and flat steel washer between the head of said bolt and the said insulation spacer successively.
8. the insulated end cover that is used for motor according to claim 1 is characterized in that, the screw on the step end face of said interior nose circle lid is a blind hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102554780A CN102377270A (en) | 2010-08-20 | 2010-08-20 | Insulating end cap applied to motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102554780A CN102377270A (en) | 2010-08-20 | 2010-08-20 | Insulating end cap applied to motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102377270A true CN102377270A (en) | 2012-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102554780A Pending CN102377270A (en) | 2010-08-20 | 2010-08-20 | Insulating end cap applied to motor |
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| Country | Link |
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| CN (1) | CN102377270A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103516100A (en) * | 2013-10-09 | 2014-01-15 | 中达电机股份有限公司 | Insulation end cap |
| CN104143873A (en) * | 2013-05-09 | 2014-11-12 | 上海电气集团上海电机厂有限公司 | Ultra-high-speed permanent-magnet synchronous motor with insulated bearing structure |
| CN105958744A (en) * | 2016-06-20 | 2016-09-21 | 大唐景泰新能源有限公司 | Insulating treatment technology of wind generator |
| CN106253546A (en) * | 2016-08-31 | 2016-12-21 | 无锡太昌精密机械有限公司 | The End cover for motor of anti-shaft current |
| CN114499012A (en) * | 2021-12-30 | 2022-05-13 | 西安中车永电捷力风能有限公司 | Insulating end cover structure suitable for offshore wind driven generator |
Citations (6)
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| CN101228362A (en) * | 2005-10-27 | 2008-07-23 | 日本精工株式会社 | Insulating rolling bearing for use in prevention of electric corrosion, method for manufacture thereof, and bearing device |
| CN201199650Y (en) * | 2008-05-10 | 2009-02-25 | 无锡华达电机有限公司 | Shaft current proof insulated structure for motor |
| JP2009112065A (en) * | 2007-10-26 | 2009-05-21 | Panasonic Corp | Molded motor |
| CN201323490Y (en) * | 2008-12-23 | 2009-10-07 | 上海上电电机有限公司 | Bearing insulation structure capable of preventing bearing from being damaged by shaft electrical current |
| CN201388100Y (en) * | 2009-03-23 | 2010-01-20 | 中船重工电机科技股份有限公司 | Motor bearing seat insulation structure |
| CN101692590A (en) * | 2009-08-10 | 2010-04-07 | 南阳防爆集团股份有限公司 | Motor insulating bearing device and manufacturing method thereof |
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2010
- 2010-08-20 CN CN2010102554780A patent/CN102377270A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101228362A (en) * | 2005-10-27 | 2008-07-23 | 日本精工株式会社 | Insulating rolling bearing for use in prevention of electric corrosion, method for manufacture thereof, and bearing device |
| JP2009112065A (en) * | 2007-10-26 | 2009-05-21 | Panasonic Corp | Molded motor |
| CN201199650Y (en) * | 2008-05-10 | 2009-02-25 | 无锡华达电机有限公司 | Shaft current proof insulated structure for motor |
| CN201323490Y (en) * | 2008-12-23 | 2009-10-07 | 上海上电电机有限公司 | Bearing insulation structure capable of preventing bearing from being damaged by shaft electrical current |
| CN201388100Y (en) * | 2009-03-23 | 2010-01-20 | 中船重工电机科技股份有限公司 | Motor bearing seat insulation structure |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143873A (en) * | 2013-05-09 | 2014-11-12 | 上海电气集团上海电机厂有限公司 | Ultra-high-speed permanent-magnet synchronous motor with insulated bearing structure |
| CN103516100A (en) * | 2013-10-09 | 2014-01-15 | 中达电机股份有限公司 | Insulation end cap |
| CN103516100B (en) * | 2013-10-09 | 2015-08-26 | 中达电机股份有限公司 | A kind of insulated end cover |
| CN105958744A (en) * | 2016-06-20 | 2016-09-21 | 大唐景泰新能源有限公司 | Insulating treatment technology of wind generator |
| CN105958744B (en) * | 2016-06-20 | 2018-12-11 | 大唐景泰新能源有限公司 | Wind driven generator insulating treatment process |
| CN106253546A (en) * | 2016-08-31 | 2016-12-21 | 无锡太昌精密机械有限公司 | The End cover for motor of anti-shaft current |
| CN114499012A (en) * | 2021-12-30 | 2022-05-13 | 西安中车永电捷力风能有限公司 | Insulating end cover structure suitable for offshore wind driven generator |
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Application publication date: 20120314 |