CN103023190A - High-power variable frequency motor insulation bearing sleeve - Google Patents
High-power variable frequency motor insulation bearing sleeve Download PDFInfo
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- CN103023190A CN103023190A CN2012105459611A CN201210545961A CN103023190A CN 103023190 A CN103023190 A CN 103023190A CN 2012105459611 A CN2012105459611 A CN 2012105459611A CN 201210545961 A CN201210545961 A CN 201210545961A CN 103023190 A CN103023190 A CN 103023190A
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Abstract
A high-power variable frequency motor insulation bearing sleeve comprises a motor shaft, a bearing, a bearing inner cap, a bearing outer cap, an oil baffle ring and a baffle ring, wherein an insulation sleeve is arranged out of the bearing. The high-power variable frequency motor insulation bearing sleeve is characterized in that the insulation sleeve comprises an inner insulation spacer arranged between the bearing and the bearing inner cap, an outer insulation spacer arranged between the bearing and the bearing outer cap, a rear end cap arranged out of the bearing, and a gap insulation strip and a glass fiber insulation layer arranged between the rear end cover and a bearing seat. Three insulation strips are respectively arranged on the left side, the right side and the outer circle of the bearing, can effectively cut off a loop of a motor shaft current, and prevent the motor shaft current from forming a current loop through a motor bearing end cap and a motor base to destroy bearing balls, raceway surface roughness and oil film, and furthermore the bearing is protected. In addition, the insulation strips are simple in structure, convenient to manufacture, low in cost, and convenient to replace, and therefore manufacturing cost of a motor is reduced, and production cycles of motor forming products are guaranteed.
Description
Technical field
The present invention relates to the high-power frequency conversion motor insulating bearing carrier ring, mainly be applicable to the variable-frequency motor of 75-1000KW.
Background technology
Variable-frequency motor uses inverter supply, and supply power voltage contains a large amount of high order harmonic components, and high order harmonic component is easily responded to a large amount of capacitive coupling electric currents, makes and produces a large amount of shaft currents in the rotor, and shaft current forms current circuit by motor bearing end cover and support.The electric current that flows through bearing can destroy bearing film, emits pit at ball and raceway face electric arc, destroys bearing ball and raceway face roughness and oil film, causes bearing temperature to raise and burns.For preventing that shaft current destruction bearing from should cut off the loop of shaft current, prior art adopts insulation bearing to cut off the loop of shaft current usually, protects bearing.But because the insulation bearing manufacture difficulty is large, expensive, delivery cycle will be grown, and has affected the production cycle of motor shaped article.
Summary of the invention
The objective of the invention is provides a kind of seal that arranges in order to overcome the shortcoming of prior art existence outside plain bearing, cut off the loop of shaft current, protection bearing, the high-power frequency conversion motor insulating bearing carrier ring of reduction motor manufacturing cost.
The technical scheme of high-power frequency conversion motor insulating bearing carrier ring of the present invention is: comprise motor shaft, bearing, internal bearing cover, bearing end cover, oil scraper ring and back-up ring, insulating case is set outside bearing, it is characterized in that described insulating case is included in arranges interior insulation spacer between bearing and the internal bearing cover, the external insulation pad is set between bearing and bearing end cover, at bearing peripheral hardware postpone end cap, gap insulation sheet and fiberglass insulation are set between rear end cap and the bearing pedestal.
The invention discloses a kind of high-power frequency conversion motor insulating bearing carrier ring; by interior insulation spacer is set between bearing and internal bearing cover; the external insulation pad is set between bearing and bearing end cover; between bearing and bearing pedestal, rear end cap is set; gap insulation sheet and fiberglass insulation are set between rear end cap and the bearing pedestal; the downside of bearing connects motor shaft; the left side of bearing; right side and cylindrical all arrange an insulating trip; the loop that can effectively cut off the motor shaft electric current; avoid the motor shaft electric current to form current circuit by motor bearing end cover and support, destroy bearing ball and raceway face roughness and oil film, thus the protection bearing; and insulation fin construction is simple; easily manufactured, low cost, it is convenient to change; reduce the manufacturing cost of motor, guaranteed the production cycle of motor shaped article.
High-power frequency conversion motor insulating bearing carrier ring of the present invention, described interior insulation spacer and external insulation spacer thickness are 0.8mm-1.2mm.Described interior insulation spacer and external insulation spacer thickness are 1mm, and the all-purpose adhesive sticking layer is arranged between the seam of interior insulation spacer and internal bearing cover, and the all-purpose adhesive sticking layer is arranged between the seam of external insulation pad and bearing end cover.Respectively be shaped with the gap insulation groove under described internal bearing cover and the bearing end cover.
Description of drawings
Fig. 1 is the partial structurtes schematic diagram of high-power frequency conversion motor insulating bearing carrier ring of the present invention.
Embodiment
The present invention relates to a kind of high-power frequency conversion motor insulating bearing carrier ring, as shown in Figure 1, comprise motor shaft 1, bearing 2, internal bearing cover 3, bearing end cover 4, oil scraper ring 5 and back-up ring 6, insulating case is set outside bearing, it is characterized in that described insulating case is included in arranges interior insulation spacer 7 between bearing 2 and the internal bearing cover 3, between bearing 2 and bearing end cover 4, external insulation pad 8 is set, at bearing 2 peripheral hardware postpone end caps 10, gap insulation sheet 11 and fiberglass insulation 12 are set between rear end cap 10 and the bearing pedestal 9.By interior insulation spacer 7 is set between bearing 2 and internal bearing cover 3; between bearing 2 and bearing end cover 4, external insulation pad 8 is set; at bearing peripheral hardware postpone end cap 10; gap insulation sheet 11 and fiberglass insulation 12 are set between rear end cap and the bearing pedestal 9; the downside of bearing connects motor shaft 1; the left side of bearing 2; right side and cylindrical all arrange an insulating trip; the loop that can effectively cut off motor shaft 1 electric current; avoid the motor shaft electric current to form current circuit by motor bearing end cover and support; destroy bearing ball and raceway face roughness and oil film; thereby the protection bearing, and insulation fin construction is simple, easily manufactured; low cost; it is convenient to change, and has reduced the manufacturing cost of motor, has guaranteed the production cycle of motor shaped article.Described interior insulation spacer 7 and external insulation pad 8 thickness are 0.8mm-1.2mm.Described interior insulation spacer 7 and external insulation pad 8 thickness are 1mm, between the seam of interior insulation spacer 7 and internal bearing cover 3 the all-purpose adhesive sticking layer are arranged, and between the seam of external insulation pad 8 and bearing end cover 4 the all-purpose adhesive sticking layer are arranged.Described internal bearing cover 3 and bearing end cover respectively are shaped with gap insulation groove 13 4 times.
Claims (4)
1. high-power frequency conversion motor insulating bearing carrier ring, comprise motor shaft (1), bearing (2), internal bearing cover (3), bearing end cover (4), oil scraper ring (5) and back-up ring (6), insulating case is set outside bearing, it is characterized in that described insulating case is included between bearing (2) and the internal bearing cover (3) arranges interior insulation spacer (7), between bearing (2) and bearing end cover (4), external insulation pad (8) is set, at bearing (2) peripheral hardware postpone end cap (10), gap insulation sheet (11) and fiberglass insulation (12) are set between rear end cap (10) and the bearing pedestal (9).
2. high-power frequency conversion motor insulating bearing carrier ring as claimed in claim 1 is characterized in that described interior insulation spacer (7) and external insulation pad (8) thickness are 0.8mm-1.2mm.
3. high-power frequency conversion motor insulating bearing carrier ring as claimed in claim 1, it is characterized in that described interior insulation spacer (7) and external insulation pad (8) thickness are 1mm, between the seam of interior insulation spacer (7) and internal bearing cover (3) the all-purpose adhesive sticking layer is arranged, between the seam of external insulation pad (8) and bearing end cover (4) the all-purpose adhesive sticking layer is arranged.
4. high-power frequency conversion motor insulating bearing carrier ring as claimed in claim 1 is characterized in that respectively being shaped with gap insulation groove (13) under described internal bearing cover (3) and the bearing end cover (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210545961.1A CN103023190B (en) | 2012-12-17 | 2012-12-17 | High-power variable frequency motor insulation bearing sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210545961.1A CN103023190B (en) | 2012-12-17 | 2012-12-17 | High-power variable frequency motor insulation bearing sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103023190A true CN103023190A (en) | 2013-04-03 |
| CN103023190B CN103023190B (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210545961.1A Active CN103023190B (en) | 2012-12-17 | 2012-12-17 | High-power variable frequency motor insulation bearing sleeve |
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| CN (1) | CN103023190B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457392A (en) * | 2013-09-09 | 2013-12-18 | 中达电机股份有限公司 | Bearing structure capable of removing shaft currents |
| CN103607065A (en) * | 2013-11-25 | 2014-02-26 | 南车株洲电机有限公司 | Bearing insulation device, manufacturing method of bearing insulation device and variable frequency motor |
| 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 |
| CN106253545A (en) * | 2016-08-31 | 2016-12-21 | 无锡太昌精密机械有限公司 | Split type electric cover |
| CN106451892A (en) * | 2016-08-31 | 2017-02-22 | 无锡太昌精密机械有限公司 | Shaft current preventing electric motor cover |
| CN106451875A (en) * | 2016-08-31 | 2017-02-22 | 无锡太昌精密机械有限公司 | Split-type motor cover |
| CN111509892B (en) * | 2020-04-20 | 2021-09-21 | 青岛中加特电气股份有限公司 | End cover structure of motor bearing |
| CN114026345A (en) * | 2019-06-26 | 2022-02-08 | Abb瑞士股份有限公司 | Wear-resistant bearing construction with insulating sleeve and modules |
Citations (10)
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|---|---|---|---|---|
| JPH1075551A (en) * | 1996-08-29 | 1998-03-17 | Nippon Seiko Kk | Motor for driving fan |
| US20070080593A1 (en) * | 2005-10-07 | 2007-04-12 | O'donnell Steven B | Bearing sleeve |
| 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 |
| CN201590705U (en) * | 2009-08-17 | 2010-09-22 | 南车株洲电力机车有限公司 | Insulated bearing sleeve used for motor |
| CN101964562A (en) * | 2010-11-11 | 2011-02-02 | 无锡市中达电机有限公司 | Bearing insulation device of variable frequency motor |
| CN201868985U (en) * | 2010-12-14 | 2011-06-15 | 鞍山市权晟电子电力有限公司 | High-low pressure variable frequency speed control motor rear end cover insulating device |
| CN202127314U (en) * | 2011-06-29 | 2012-01-25 | 湘潭市兴盛液压机械制造有限公司 | Insulation end cover of wind driven generators |
| CN102364828A (en) * | 2011-10-31 | 2012-02-29 | 永济新时速电机电器有限责任公司 | Insulated end cover of wind power generator |
| CN102684358A (en) * | 2012-05-23 | 2012-09-19 | 东方电气集团东风电机有限公司 | Structure of drive motor for preventing shaft current |
| CN202997788U (en) * | 2012-12-17 | 2013-06-12 | 浙江金龙电机股份有限公司 | High-power frequency-variable motor insulation bearing sleeve |
-
2012
- 2012-12-17 CN CN201210545961.1A patent/CN103023190B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1075551A (en) * | 1996-08-29 | 1998-03-17 | Nippon Seiko Kk | Motor for driving fan |
| US20070080593A1 (en) * | 2005-10-07 | 2007-04-12 | O'donnell Steven B | Bearing sleeve |
| 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 |
| CN201590705U (en) * | 2009-08-17 | 2010-09-22 | 南车株洲电力机车有限公司 | Insulated bearing sleeve used for motor |
| CN101964562A (en) * | 2010-11-11 | 2011-02-02 | 无锡市中达电机有限公司 | Bearing insulation device of variable frequency motor |
| CN201868985U (en) * | 2010-12-14 | 2011-06-15 | 鞍山市权晟电子电力有限公司 | High-low pressure variable frequency speed control motor rear end cover insulating device |
| CN202127314U (en) * | 2011-06-29 | 2012-01-25 | 湘潭市兴盛液压机械制造有限公司 | Insulation end cover of wind driven generators |
| CN102364828A (en) * | 2011-10-31 | 2012-02-29 | 永济新时速电机电器有限责任公司 | Insulated end cover of wind power generator |
| CN102684358A (en) * | 2012-05-23 | 2012-09-19 | 东方电气集团东风电机有限公司 | Structure of drive motor for preventing shaft current |
| CN202997788U (en) * | 2012-12-17 | 2013-06-12 | 浙江金龙电机股份有限公司 | High-power frequency-variable motor insulation bearing sleeve |
Cited By (10)
| 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 |
| CN103457392A (en) * | 2013-09-09 | 2013-12-18 | 中达电机股份有限公司 | Bearing structure capable of removing shaft currents |
| CN103607065A (en) * | 2013-11-25 | 2014-02-26 | 南车株洲电机有限公司 | Bearing insulation device, manufacturing method of bearing insulation device and variable frequency motor |
| CN103607065B (en) * | 2013-11-25 | 2016-02-03 | 南车株洲电机有限公司 | The manufacture method of bearing insulation device, bearing insulation device, and variable-frequency motor |
| CN106253545A (en) * | 2016-08-31 | 2016-12-21 | 无锡太昌精密机械有限公司 | Split type electric cover |
| CN106451892A (en) * | 2016-08-31 | 2017-02-22 | 无锡太昌精密机械有限公司 | Shaft current preventing electric motor cover |
| CN106451875A (en) * | 2016-08-31 | 2017-02-22 | 无锡太昌精密机械有限公司 | Split-type motor cover |
| CN114026345A (en) * | 2019-06-26 | 2022-02-08 | Abb瑞士股份有限公司 | Wear-resistant bearing construction with insulating sleeve and modules |
| CN114026345B (en) * | 2019-06-26 | 2024-03-22 | Abb瑞士股份有限公司 | Wear bearing construction with insulating sleeve and module |
| CN111509892B (en) * | 2020-04-20 | 2021-09-21 | 青岛中加特电气股份有限公司 | End cover structure of motor bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103023190B (en) | 2015-03-25 |
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