CN102510159A - Brush holder for brush bracket of DC motor - Google Patents
Brush holder for brush bracket of DC motor Download PDFInfo
- Publication number
- CN102510159A CN102510159A CN2011103702074A CN201110370207A CN102510159A CN 102510159 A CN102510159 A CN 102510159A CN 2011103702074 A CN2011103702074 A CN 2011103702074A CN 201110370207 A CN201110370207 A CN 201110370207A CN 102510159 A CN102510159 A CN 102510159A
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- brush holder
- brush
- holder support
- fixing hole
- offer
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Abstract
The invention relates to a brush holder for a brush bracket above a DC motor commutator. The brush holder comprises a vertically bent brush holder body and an insulating bushing, wherein the brush holder body is formed by integrally connecting a brush holder working segment and a brush holder mounting segment; the brush holder mounting segment is a vertically bent plate body; brush grip fixing holes penetrating the upper surface and the lower surface of the brush holder working segment are formed on the brush holder working segment; inward and outward brush braid fixing holes, threaded blind holes, are formed on the front wall surface of the brush holder working segment; the insulating bushing is sleeved on the brush holder mounting segment; brush holder fixing holes are formed on the insulating bushing; and the walls of the brush holder fixing holes are insulated. The invention reduces dust and carbon powder collection between the brush holder and a brush bracket base, and improves the insulating resistance between the brush holder and the brush bracket base.
Description
Technical field
The present invention relates to a kind of brush holder support of direct current machine, the brush holder of especially a kind of DC motor commutator top is used brush holder support.
Background technology
Big-and-middle-sized direct current machine is widely used in the steel rolling main transmission equipment owing to its good speed adjusting performance.And the brushgear of commutator top is the main current-carrying part of direct current machine; Keep sliding contact between the commutator of it and rotation; Be incorporated into extraneous direct current in the armature winding through brush, make armature winding after the energising under main field, receive the effect of electromagnetic force and rotate.Because the brush holder seat is fixed on the electric motor end cap, if directly being fixed on the brush holder seat, brush holder support will cause brush ground connection, can make motor produce a large amount of sparks, damage commutator, so must insulate between brush holder support and the brush holder seat.Old-fashioned brush holder support insulation system is that the cushioning insulating material intercepts brush holder support ground connection between brush holder support and brush yoke; The globality and the sealing of this structure are very poor; Dust, carbon dust that gap location between insulating material and the brush holder support focuses on can't be cleared up, and make that the maintenance of motor is very difficult.This gap also becomes the shortcut of the moisture absorption of making moist, the motor long-play, and insulation resistance can descend gradually, and this will become hidden danger and fault point in the running, can not ensure the motor long-time running effectively.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the prior art, provide the brush holder of the direct current machine of insulation resistance between a kind of dust, carbon dust gathering situation, raising brush holder support and brush holder seat that can reduce between brush holder support and brush holder seat to use brush holder support.
According to technical scheme provided by the invention; The brush holder of said direct current machine is used brush holder support, comprises the brush holder support and the insulating case of vertical bending-like, and brush holder support is connected to form by brush holder support active section and brush holder support construction section one; The brush holder support construction section is the plate body of vertical bending-like; On the brush holder support active section, offer the brush carrier fixing hole that penetrates its upper and lower surfaces, on the front face of brush holder support active section, offer the brush pigtail fixing hole of inward-outward direction, brush pigtail fixing hole is a tapped blind hole; On the brush holder support construction section, be socketed with insulating case, on insulating case, offer the brush holder support fixing hole, the hole wall insulation of brush holder support fixing hole.
Said insulating case is processed by phenolic aldehyde glass monofilament compression molding material.
On the brush holder support active section, offer the fabrication hole that penetrates its upper and lower surfaces.
Dust, carbon dust that the present invention has reduced between brush holder support and brush holder seat are assembled situation, have improved insulation resistance between brush holder support and the brush holder seat.
Description of drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a vertical view of the present invention.
Fig. 3 is the A-A cutaway view of Fig. 2.
Embodiment
Below in conjunction with concrete accompanying drawing and embodiment the present invention is described further.
As shown in the figure: the brush holder of this direct current machine is used brush holder support; The brush holder support 1 and insulating case 2 that comprise vertical bending-like; Brush holder support 1 is connected to form by brush holder support active section 1.1 and brush holder support construction section 1.2 one, and brush holder support construction section 1.2 is the plate body of vertical bending-like, on brush holder support active section 1.1, offers the brush carrier fixing hole 1.3 that penetrates its upper and lower surfaces; On the front face of brush holder support active section 1.1, offer the brush pigtail fixing hole 1.4 of inward-outward direction, brush pigtail fixing hole 1.4 is a tapped blind hole; On brush holder support construction section 1.2, be socketed with insulating case 2, on insulating case 2, offer brush holder support fixing hole 2.1, the hole wall insulation of brush holder support fixing hole 2.1.
Said insulating case 2 is processed by phenolic aldehyde glass monofilament compression molding material.
On brush holder support active section 1.1, offer the fabrication hole 1.5 that penetrates its upper and lower surfaces.
Among the present invention, brush carrier fixing hole 1.3 is used to install brush carrier; Brush pigtail fixing hole 1.4 is used for installing the brush pigtail; Brush holder support fixing hole 2.1 is used for the present invention is fixed on the brush holder seat.
Insulating case 2 is formed by insulating material one casting on brush holder support construction section 1.2; The hole wall of brush holder support fixing hole 2.1 is the insulating material that forms insulating case 2; Can use common bolt when brush holder support connects with the brush holder seat like this and need not use special insulated bolt, strengthen assembling workability.
The present invention is simple and reasonable for structure, compact; Through adopting phenolic aldehyde glass monofilament compression molding material 4330 conducts of compression moulding and the insulation scheme between the brush holder seat at brush holder support 1; Overcome many shortcomings of original technology, increased the electric property of brush holder support 1, strengthened the insulation between brush holder support 1 and brush holder seat.
Evidence: adopt the brush holder support under two kinds of different insulative structures to carry out motor operation test; The motor of identical parameters is after operation a period of time under the identical running environment; Insulation between the brush holder support of background technology and the brush holder seat obviously reduces; The carbon dust dust showed increased in insulating material shelter and be difficult to the cleaning, the spark between brush and commutator obviously strengthens, commutator face has the vestige of significantly burning.And the insulation resistance between brush holder support of the present invention and the brush holder seat does not almost have significant change, and the oxide-film of commutator face is complete as good.Through appropriate design to structure, reduced the commutation spark of motor, the commutator aging speed that slowed down has prolonged useful life of motor, has guaranteed that the motor long-term safety moves reliably.
Claims (3)
1. the brush holder of a direct current machine is used brush holder support; It is characterized in that: the brush holder support (1) and insulating case (2) that comprise vertical bending-like; Brush holder support (1) is connected to form by brush holder support active section (1.1) and brush holder support construction section (1.2) one; Brush holder support construction section (1.2) is the plate body of vertical bending-like; On brush holder support active section (1.1), offer the brush carrier fixing hole (1.3) that penetrates its upper and lower surfaces, on the front face of brush holder support active section (1.1), offer the brush pigtail fixing hole (1.4) of inward-outward direction, brush pigtail fixing hole (1.4) is a tapped blind hole; On brush holder support construction section (1.2), be socketed with insulating case (2), on insulating case (2), offer brush holder support fixing hole (2.1), the hole wall insulation of brush holder support fixing hole (2.1).
2. the brush holder of direct current machine according to claim 1 is used brush holder support, it is characterized in that: said insulating case (2) is processed by phenolic aldehyde glass monofilament compression molding material.
3. the brush holder of direct current machine according to claim 1 is used brush holder support, it is characterized in that: on brush holder support active section (1.1), offer the fabrication hole (1.5) that penetrates its upper and lower surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103702074A CN102510159A (en) | 2011-11-19 | 2011-11-19 | Brush holder for brush bracket of DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103702074A CN102510159A (en) | 2011-11-19 | 2011-11-19 | Brush holder for brush bracket of DC motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102510159A true CN102510159A (en) | 2012-06-20 |
Family
ID=46222217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103702074A Pending CN102510159A (en) | 2011-11-19 | 2011-11-19 | Brush holder for brush bracket of DC motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102510159A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354398A (en) * | 2013-06-26 | 2013-10-16 | 沧州华海风电设备科技技术开发有限公司 | Brush holder |
| CN105207395A (en) * | 2015-09-08 | 2015-12-30 | 国电大渡河检修安装有限公司 | Method for preventing accumulation of carbon powder on vertical hydro-generator slip ring carbon brush holder supporting rod |
| CN107546902A (en) * | 2016-06-24 | 2018-01-05 | 中电电机股份有限公司 | A kind of brush rocker structure of large-sized low-speed direct current lifting motor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986477A (en) * | 2010-11-25 | 2011-03-16 | 无锡华天电气科技有限公司 | Electric brush structure of direct-current motor |
-
2011
- 2011-11-19 CN CN2011103702074A patent/CN102510159A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986477A (en) * | 2010-11-25 | 2011-03-16 | 无锡华天电气科技有限公司 | Electric brush structure of direct-current motor |
Non-Patent Citations (2)
| Title |
|---|
| 大连电机厂工艺科绝缘组: "冶金起重直流电机刷杆采用环氧粉末涂敷的应用试验", 《电机技术》, no. 1, 2 April 1981 (1981-04-02), pages 23 - 25 * |
| 广州电器科学研究所: "关于提高湿热带大型电机防潮性能的几点措施", 《大电机技术》, no. 2, 1 May 1978 (1978-05-01), pages 80 - 81 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354398A (en) * | 2013-06-26 | 2013-10-16 | 沧州华海风电设备科技技术开发有限公司 | Brush holder |
| CN103354398B (en) * | 2013-06-26 | 2017-10-17 | 沧州华海风电设备科技技术开发有限公司 | A kind of brush holder |
| CN105207395A (en) * | 2015-09-08 | 2015-12-30 | 国电大渡河检修安装有限公司 | Method for preventing accumulation of carbon powder on vertical hydro-generator slip ring carbon brush holder supporting rod |
| CN107546902A (en) * | 2016-06-24 | 2018-01-05 | 中电电机股份有限公司 | A kind of brush rocker structure of large-sized low-speed direct current lifting motor |
| CN107546902B (en) * | 2016-06-24 | 2019-07-12 | 中电电机股份有限公司 | A kind of large-sized low-speed direct current promotes the brush rocker structure of motor |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120620 |