CN114498230A - Electric brush device - Google Patents
Electric brush device Download PDFInfo
- Publication number
- CN114498230A CN114498230A CN202111564559.3A CN202111564559A CN114498230A CN 114498230 A CN114498230 A CN 114498230A CN 202111564559 A CN202111564559 A CN 202111564559A CN 114498230 A CN114498230 A CN 114498230A
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- China
- Prior art keywords
- brush
- lead
- fixing plate
- circuit board
- electric brush
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- 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.)
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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
- H01R39/38—Brush holders
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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
- H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
- H01R39/24—Laminated contacts; Wire contacts, e.g. metallic brush, carbon fibres
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- Motor Or Generator Current Collectors (AREA)
Abstract
The present application relates to a brush device, it includes at least one brush, third wire, fixed knot structure and the stable structure of being connected with the brush, wherein, fixed knot structure includes: the brush holder is provided with a sliding channel for the sliding of the power supply brush, the sliding channel penetrates through the brush holder, the insulating fixing plate is embedded at one end of the brush holder, embedded with the insulating fixing plate, is embedded in the connecting bracket, the guide sleeve penetrates through the insulating fixing plate and the connecting bracket, and a third wire penetrates through the guide sleeve from the inside of the sliding channel and is connected with a power supply; the stabilizing structure is used for driving the electric brush to slide in the sliding channel, so that the electric brush is tightly abutted to the slip ring. The electric brush device has the effect of improving the overall vibration resistance and reliability of the electric brush device.
Description
Technical Field
The application relates to the technical field of aviation equipment, in particular to an electric brush device.
Background
The brush device is used to conduct electricity from a stationary or non-rotating system to a rotating system, such as a propeller. The brush arrangement includes a brush forming part of a non-rotating system, the brush being configured to ride on a slip ring located on the rotating system. Therefore, a plurality of sliding contacts are formed between the brushes and the slip rings. Electrical power can be conducted from the brushes of the stationary brush assembly through the sliding contacts to the rotating slip ring.
In order to change the pitch angle of the blades along with the flight working condition in the use process of the electric variable pitch propeller, the blades need to be driven to rotate by a variable pitch motor on the propeller, and therefore, a power supply on the electric variable pitch propeller needs to be introduced to the rotating variable pitch motor of the propeller through a slip ring. Because the rotating speed of the propeller is high, and the rotating propeller pitch-variable motor also has higher rotating speed, the transmission of current voltage and signals is realized by electric friction contact between the electric brush and the slip ring by generally adopting a disc-type slip ring.
When the shock resistance of the related electric brush device is poor, under the vibration environment, the phenomena of unstable output, electric brush disengagement, short practical service life and the like can occur, and even the condition of direct damage of the electric brush structure can occur.
Disclosure of Invention
In order to improve the shock resistance of the brush device, the present application provides a brush device.
The application provides an electric brush device adopts following technical scheme:
an electric brush device comprises at least one electric brush, a third conducting wire connected with the electric brush, a fixed structure and a stable structure, wherein,
the fixing structure includes: the brush holder is provided with a sliding channel for the sliding of the power supply brush, the sliding channel penetrates through the brush holder, the insulating fixing plate is embedded at one end of the brush holder, embedded with the insulating fixing plate, is embedded in the connecting bracket, the guide sleeve penetrates through the insulating fixing plate and the connecting bracket, and a third wire penetrates through the guide sleeve from the inside of the sliding channel and is connected with a power supply;
the stabilizing structure is used for driving the electric brush to slide in the sliding channel, so that the electric brush is tightly abutted to the slip ring.
Through the technical scheme, the brush holder is embedded in the connecting support, the groove position of the connecting support plays a role in stabilizing and fixing the brush holder, the guide sleeve penetrates through the insulating fixing plate and the connecting support and is connected with the insulating fixing plate and the connecting support, the insulating fixing plate and the connecting support are connected through the guide sleeve, and the insulating fixing plate is embedded in the brush holder, so that the stability of the brush holder is improved through the insulating fixing plate, and the shock resistance of the electric brush device is improved.
Specifically, the insulation fixing plate and the guide sleeve can be arranged in a split mode. The insulating fixing plate and the guide sleeve can also be designed integrally.
In the electric brush device, the surface of the guide sleeve is provided with a positioning part, and the positioning part is clamped between the insulating fixing plate and the connecting bracket.
In the above brush device, the stabilizing structure includes a spring, the spring is located in the sliding channel, and two ends of the spring are respectively abutted against the brush and the insulating fixing plate.
In the electric brush device, the sliding channel comprises a limiting section for stably limiting the sliding of the electric brush and an inner cavity section for accommodating the stable structure, and the diameter of the section of the inner cavity section perpendicular to the sliding direction of the electric brush is between the diameter of a circumscribed circle and the diameter of an inscribed circle of the section of the limiting section.
In the brush device, the third wire is connected to a crimp terminal, and the crimp terminal is connected to a power supply.
Specifically, the crimping connector comprises a male head and a female head, the male head and the female head are connected in an inserting mode, and the maximum outer diameter of the male head or the female head is smaller than the inner diameters of the guide sleeve and the sliding channel.
After the male head and the female head are separated, the electric brush and the conducting wire can be drawn out from the front end of the brush holder, so that the electric brush and the third conducting wire can be replaced.
In the above brush device, the brush holder, the insulating fixing plate, and the guide sleeve are made of a wear-resistant insulating material.
In the electric brush device, the electric brush device further comprises a rotating speed measuring assembly and a vibration measuring assembly, wherein the rotating speed measuring assembly comprises a first circuit board fixed on the brush holder, a rotating speed sensor fixed on the first circuit board and a first lead connected with the first circuit board, and the vibration measuring assembly comprises a second circuit board fixed on the brush holder, an acceleration sensor fixed on the second circuit board and a second lead connected with the second circuit board.
In the electric brush device, the brush holder is provided with a groove, and the first circuit board and the second circuit board are fixed in the groove.
In the electric brush device, a through groove for the first lead and the second lead to penetrate out is formed in the position, opposite to the groove, of the insulating fixing plate, and the through groove for the first lead and the second lead to penetrate through is used for sealing.
In the electric brush device, electromagnetic shielding wires are arranged outside the first wire, the second wire and the third wire, and are lapped with equipment of a non-rotating system and the connecting bracket.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through the design of concave-convex positioning among the brush holder, the insulating fixing plate and the connecting bracket, the integral vibration resistance and reliability of the device are ensured, so that the structure of the electric brush device has high vibration resistance;
2. through the arrangement of the stable structure, the compression joint and the sliding channel, the stability, the reliability and the shock resistance of the work are realized, and the replacement of the worn electric brush is convenient and quick;
3. the real-time monitoring of the rotating speed of the propeller is ensured and the real-time monitoring of the vibration of the power equipment near the propeller is realized through the arrangement of the rotating speed measuring component and the vibration measuring component;
4. the arrangement of the electromagnetic shielding wire ensures the anti-interference capability of signal transmission and the redundancy design of electrostatic discharge;
5. the modularized design, simple structure, easy dismounting, the function is integrated, has not only provided screw displacement function power supply demand, has realized rotational speed signal and vibration signal's real-time collection and monitoring moreover, and the reliability is high, and maintainability is good.
Drawings
Fig. 1 is a perspective view of a brush device according to an embodiment of the present disclosure.
Fig. 2 is a two-dimensional cross-sectional view of the brush assembly of fig. 1 taken in a plane passing through the axis of the bore segment.
Description of the reference numerals: 1. a brush holder; 2. an insulating fixing plate; 3. connecting a bracket; 4. a spring; 5. a guide sleeve; 6. an electric brush; 7. a third conductive line;
8. a rotational speed sensor; 9. a first circuit board; 10. a first conductive line;
11. an acceleration sensor; 12. a second circuit board; 13. a second conductive line;
14. crimping the connector;
15. a limiting section; 16. an inner cavity section; 17. a groove; 18. a through groove; 19. a positioning part;
20. an electromagnetic shielding wire.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
In the present application, the power source may be located on a non-rotating system of the aircraft. The power supply is used to supply power to the brushes 6. The slip ring may be located on the propeller assembly. The brushes 6 are in electrical contact with conductive slip rings mounted to the rotating system.
The embodiment of the application discloses an electric brush 6 device.
Referring to fig. 1 and 2, an electric brush 6 device includes at least one electric brush 6, a third conducting wire 7 connected to the electric brush 6, a fixing structure and a stabilizing structure, wherein the fixing structure provides a sliding channel for accommodating the electric brush 6 and improves the vibration resistance and reliability of the whole structure of the electric brush 6, the stabilizing structure is used for driving the electric brush 6 to slide in the sliding channel so that the electric brush 6 is tightly abutted to a slip ring, and the third conducting wire 7 is connected to a power supply, so that the electric brush 6 is powered.
Referring to fig. 2, the fixing structure includes a brush holder 1, an insulating fixing plate 2, a guide sleeve 5 and a connecting bracket 3, a sliding channel penetrates through the brush holder 1, a brush 6 is located in the sliding channel and is slidably connected with the brush holder 1, a first clamping groove is formed in one side of the brush holder 1 penetrated by the sliding channel, and the insulating fixing plate 2 is clamped in the first clamping groove, so that the insulating fixing plate 2 is embedded in one end of the brush holder 1. A second clamping groove is formed in one side of the connecting support 3, and one end, embedded with the insulating fixing plate 2, of the brush holder 1 is clamped in the second clamping groove, so that the end, embedded with the insulating fixing plate 2, of the brush holder 1 is embedded in the connecting support 3. The brush holder 1 and the connecting bracket 3 are fixedly connected, for example, the brush holder 1 and the connecting bracket 3 can be fixedly connected through bolts, the guide sleeve 5 penetrates through the insulating fixing plate 2 and the connecting bracket 3, the surface of the guide sleeve 5 is provided with a positioning part 19, and the positioning part 19 is clamped between the insulating fixing plate 2 and the connecting bracket 3. Location portion 19 plays limiting displacement to insulating fixed plate 2 for insulating fixed plate 2 can not remove in first draw-in groove, and insulating fixed plate 2 and linking bridge 3 are spacing to location portion 19 jointly simultaneously, make 5 connections of uide bushing more stable. The third lead 7 passes through the guide sleeve 5 from the sliding channel to be connected with a power supply, and the third lead 7 can freely move through a hole in the middle of the guide sleeve 5. The connecting bracket 3 is fixed to equipment of the non-rotating system, for example, the connecting bracket 3 may be fixed to the engine housing by a bolt connection.
The fixed knot constructs through the unsmooth location setting of above-mentioned four bibliographic categories branch, only needs brush holder 1 and linking bridge 3 between fixed, and uide bushing 5 and insulating fixed plate 2 can be in the device system stable fixation promptly, simple structure, easy dismounting, the anti-seismic performance of whole device improves, and modular design and function integration, the reliability is high, and maintainability is good.
The brush holder 1, the insulating fixing plate 2 and the guide sleeve 5 are made of wear-resistant insulating materials, such as bakelite, the dielectric strength and the insulation resistance of the bakelite satisfy the electrical clearance and the creepage distance of each carbon brush assembly, the brush holder 1, the insulating fixing plate 2 and the guide sleeve 5 basically form a closed insulating space, and the insulating property of the electric brush 6 device is improved. At least two brushes 6 are provided per fixing structure, i.e. the number of third conductors 7, springs 4 and guide sleeves 5 is likewise at least two.
Referring to fig. 2, the stabilizing structure includes a spring 4, the spring 4 is located in the sliding channel, and two ends of the spring 4 are respectively abutted with the brush 6 and the insulating fixing plate 2. When the electric brush 6 is abraded, the spring 4 can deduce the electric brush 6, so that the electric brush 6 is tightly abutted against the slip ring, and the working stability and reliability of the electric brush 6 device are improved.
The sliding channel comprises a limiting section 15 for stably limiting the sliding of the electric brush 6 and an inner cavity section 16 for accommodating a stable structure, the inner cavity section 16 is positioned between the limiting section 15 and the insulating fixing plate 2, the diameter of the section of the inner cavity section 16, which is perpendicular to the sliding direction of the electric brush 6, is between the diameter of a circumscribed circle and the diameter of an inscribed circle of the section of the limiting section 15, which is perpendicular to the sliding direction of the electric brush 6, and the section of the limiting section 15, which is perpendicular to the sliding direction of the electric brush 6, can be square matched with the electric brush 6. Brush 6 is accurate spacing by spacing section 15 for brush 6 can be stably along the square slip of slide channel's length, simultaneously because spring 4 is located inner chamber section 16, makes after spacing section 15 perpendicular to brush 6 moving direction's terminal surface is supported to spring 4's tip, and spacing section 15 perpendicular to brush 6 moving direction's terminal surface is spacing to spring 4, makes spring 4 can not fall out slide channel.
The third wire 7 is connected with a crimping connector 14, the crimping connector 14 is connected with a power supply, the crimping connector 14 comprises a male head and a female head, the male head and the female head are connected in an inserting mode, and the maximum outer diameter of the male head or the female head is smaller than the inner diameters of the guide sleeve 5 and the sliding channel. After the electric brush 6 is worn to a certain degree in use, the connection between the crimping connector 14 of the original third wire 7 and the power line of the power supply is disconnected, then the third wire 7 connected with the electric brush 6 is pulled out from the sliding channel, the third wire 7 connected with the new electric brush 6 passes through the sliding channel and the guide sleeve 5, the crimping connector 14 connected with the end part of the third wire 7 and the power line of the power supply are crimped, the new electric brush 6 is clamped into the sliding channel, namely, the electric brush 6 is quickly replaced, and due to the structural arrangement of the sliding channel, the spring 4 is stably positioned in the inner cavity section 16, and the electric brush 6 is more convenient to replace.
The brush 6 device further comprises a rotation speed measuring assembly and a vibration measuring assembly, wherein the rotation speed measuring assembly comprises a first circuit board 9 fixed on the brush holder 1, a rotation speed sensor 8 fixed on the first circuit board 9 and a first lead 10 connected with the first circuit board 9, and the vibration measuring assembly comprises a second circuit board 12 fixed on the brush holder 1, an acceleration sensor 11 fixed on the second circuit board 12 and a second lead 13 connected with the second circuit board 12. The brush holder 1 is provided with a groove 17, the groove 17 is arranged on one side of the brush holder 1 embedded with the insulation fixing plate 2 and extends towards the direction far away from the insulation fixing plate 2, the first circuit board 9 and the second circuit board 12 are fixed in the groove 17, for example, the mechanical connection mode such as bolt fixing or the sealing glue filling mode, the fixed connection between the rotating speed sensor 8 and the first circuit board 9, the fixed connection between the acceleration sensor and the second circuit board 12, and the welding fixation is preferable. The position of the insulation fixing plate 2 opposite to the groove 17 is provided with a through groove 18 for the first lead 10 and the second lead 13 to penetrate out, after the first lead 10 and the second lead 13 penetrate out of the through groove 18, the through groove 18 is sealed by sealant, and the first lead 10 and the second lead 13 penetrating out of the through groove 18 are connected with a power supply. The real-time acquisition and monitoring of the rotating speed of the propeller and the vibration data of the power equipment near the propeller are realized.
The working process of the electric brush 6 device of the application is as follows: the connecting bracket 3 is fixed on an engine shell of a non-rotating system through bolts, the electric brush 6 is abutted against the slip ring, the first lead 10, the second lead 13 and the third lead 7 are all connected with a power supply, the electric brush 6 can keep stable abutting against the slip ring under the extrusion of the spring 4, and the electric brush 6 device works more stably and reliably.
When the electric brush 6 is worn too much and needs to be replaced, the connection between the crimping connector 14 of the original third wire 7 and the power line of the power supply is disconnected, then the third wire 7 connected with the electric brush 6 and the electric brush 6 is pulled out from the sliding channel, the third wire 7 connected with the new electric brush 6 passes through the sliding channel and the guide sleeve 5, the new electric brush 6 is clamped in the sliding channel, and the crimping connector 14 connected with the end part of the third wire 7 is crimped with the power line of the power supply, namely, the quick replacement of the electric brush 6 is completed.
The device simple structure, easy dismounting, in going into sliding channel with spring 4 card during the installation, rotational speed measuring subassembly and vibration measuring subassembly are fixed in the recess 17, then inlay insulating fixed plate 2 and locate brush holder 1 tip, pass insulating fixed plate 2 with 5 sections of uide bushing again, inlay brush holder 1 and insulating fixed plate 2 whole again and locate linking bridge 3 to pass through the bolt fastening with brush holder 1 and insulating support, install brush 6 at last and accomplish the installation promptly.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. An electrical brush assembly, characterized by: comprising at least one brush (6), a third conductor (7) connected to the brush (6), a fixing structure and a stabilizing structure, wherein,
the fixing structure includes: the brush holder (1) is provided with a sliding channel for sliding of the electric brush (6), the sliding channel penetrates through the brush holder (1), the insulating fixing plate (2) is embedded in one end of the brush holder (1), one end, embedded with the insulating fixing plate (2), of the brush holder (1) is embedded in the connecting support (3), the guide sleeve (5) penetrates through the insulating fixing plate (2) and the connecting support (3), and a third wire (7) penetrates through the guide sleeve (5) from the inside of the sliding channel to be connected with a power supply;
the stabilizing structure is used for driving the electric brush (6) to slide in the sliding channel, so that the electric brush (6) is tightly abutted to the slip ring.
2. A brush assembly according to claim 1, wherein: the surface of the guide sleeve (5) is provided with a positioning part (19), and the positioning part (19) is clamped between the insulation fixing plate (2) and the connecting bracket (3).
3. A brush assembly according to claim 1, wherein: the stabilizing structure comprises a spring (4), the spring (4) is located in a sliding channel, and two ends of the spring (4) are respectively abutted to the electric brush (6) and the insulating fixing plate (2).
4. A brush assembly according to claim 1, wherein: the sliding channel comprises a limiting section (15) for stably limiting the sliding of the electric brush (6) and an inner cavity section (16) for accommodating the stable structure, and the diameter of the section, perpendicular to the sliding direction of the electric brush (6), of the inner cavity section (16) is between the diameter of a circumscribed circle and the diameter of an inscribed circle of the section of the limiting section (15).
5. A brush assembly according to claim 1, wherein: the third lead (7) is connected with a crimping connector (14), and the crimping connector (14) is connected with a power supply.
6. A brush assembly according to claim 1, wherein: the brush holder (1), the insulating fixing plate (2) and the guide sleeve (5) are made of wear-resistant insulating materials.
7. A brush assembly according to claim 1, wherein: the device is characterized by further comprising a rotating speed measuring assembly and a vibration measuring assembly, wherein the rotating speed measuring assembly comprises a first circuit board (9) fixed on the brush holder (1), a rotating speed sensor (8) fixed on the first circuit board (9) and a first lead (10) connected with the first circuit board (9), and the vibration measuring assembly comprises a second circuit board (12) fixed on the brush holder (1), an acceleration sensor (11) fixed on the second circuit board (12) and a second lead (13) connected with the second circuit board (12).
8. A brush assembly according to claim 7, wherein: the brush holder (1) is provided with a groove (17), and the first circuit board (9) and the second circuit board (12) are fixed in the groove (17).
9. A brush assembly according to claim 8, wherein: and a through groove (18) for the first lead (10) and the second lead (13) to penetrate out is formed in the position, opposite to the groove (17), of the insulating fixing plate (2), and the through groove (18) for the first lead (10) and the second lead (13) to penetrate through is used for sealing.
10. A brush assembly according to claim 7, wherein: electromagnetic shielding lines (20) are arranged outside the first lead (10), the second lead (13) and the third lead (7), and the electromagnetic shielding lines (20) are in lap joint with equipment of a non-rotating system and the connecting bracket (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111564559.3A CN114498230B (en) | 2021-12-20 | 2021-12-20 | Electric brush device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111564559.3A CN114498230B (en) | 2021-12-20 | 2021-12-20 | Electric brush device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114498230A true CN114498230A (en) | 2022-05-13 |
| CN114498230B CN114498230B (en) | 2023-10-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111564559.3A Active CN114498230B (en) | 2021-12-20 | 2021-12-20 | Electric brush device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114498230B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11317382A (en) * | 1998-05-06 | 1999-11-16 | Seiko Seiki Co Ltd | Mounting structure of brush for air spindle |
| US20070080602A1 (en) * | 2005-10-07 | 2007-04-12 | Denso Corporation | Brush apparatus for rotary electric machine |
| CN202333396U (en) * | 2011-11-24 | 2012-07-11 | 华锐风电科技(集团)股份有限公司 | Slip-ring device for closed-loop control |
| EP2571115A1 (en) * | 2011-09-16 | 2013-03-20 | Schleifring und Apparatebau GmbH | Modular brush holder |
| CN108281866A (en) * | 2017-12-27 | 2018-07-13 | 彩虹无人机科技有限公司 | A kind of electronic variable-pitch propeller carbon brush configuration of anti-vibration fatigue |
| CN112217071A (en) * | 2019-07-12 | 2021-01-12 | 拉季埃-菲雅克有限责任公司 | Brush assembly |
| CN213754181U (en) * | 2020-12-02 | 2021-07-20 | 北京佩特来电器有限公司 | Brush assembly and alternating-current generator |
-
2021
- 2021-12-20 CN CN202111564559.3A patent/CN114498230B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11317382A (en) * | 1998-05-06 | 1999-11-16 | Seiko Seiki Co Ltd | Mounting structure of brush for air spindle |
| US20070080602A1 (en) * | 2005-10-07 | 2007-04-12 | Denso Corporation | Brush apparatus for rotary electric machine |
| EP2571115A1 (en) * | 2011-09-16 | 2013-03-20 | Schleifring und Apparatebau GmbH | Modular brush holder |
| CN202333396U (en) * | 2011-11-24 | 2012-07-11 | 华锐风电科技(集团)股份有限公司 | Slip-ring device for closed-loop control |
| CN108281866A (en) * | 2017-12-27 | 2018-07-13 | 彩虹无人机科技有限公司 | A kind of electronic variable-pitch propeller carbon brush configuration of anti-vibration fatigue |
| CN112217071A (en) * | 2019-07-12 | 2021-01-12 | 拉季埃-菲雅克有限责任公司 | Brush assembly |
| CN213754181U (en) * | 2020-12-02 | 2021-07-20 | 北京佩特来电器有限公司 | Brush assembly and alternating-current generator |
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| Publication number | Publication date |
|---|---|
| CN114498230B (en) | 2023-10-17 |
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