CN114498230B - Electric brush device - Google Patents
Electric brush device Download PDFInfo
- Publication number
- CN114498230B CN114498230B CN202111564559.3A CN202111564559A CN114498230B CN 114498230 B CN114498230 B CN 114498230B CN 202111564559 A CN202111564559 A CN 202111564559A CN 114498230 B CN114498230 B CN 114498230B
- Authority
- CN
- China
- Prior art keywords
- brush
- fixing plate
- brush holder
- circuit board
- sliding channel
- 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.)
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Classifications
-
- 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
-
- 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
Abstract
The application relates to a brush device comprising at least one brush, a third wire connected to the brush, a fixing structure and a stabilizing structure, wherein the fixing structure comprises: the brush holder is provided with a sliding channel for the brush to slide, the sliding channel penetrates through the brush holder, the insulating fixing plate is embedded at one end of the brush holder, which is embedded with the insulating fixing plate, is embedded at 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 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 as to enable the electric brush to be abutted against the slip ring. The application has the effect of improving the overall vibration resistance and reliability of the 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 arrangement is used to conduct electrical power from a stationary or non-rotating system to a rotating system, such as a propeller. The brush assembly 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. Thus, a plurality of sliding contacts are formed between the brushes and the slip ring. 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 enable the pitch angle of the blades to change along with the flight working condition in the use process of the electric variable-pitch propeller, the blades are required to rotate through the driving of the variable-pitch motor on the propeller, and therefore, the power supply on the motor is required to be led into the rotating propeller variable-pitch motor through the slip ring. Because the rotating speed of the propeller is high, and the rotating propeller pitch-changing motor also has a larger rotating speed, a disc-type slip ring is generally adopted, and the transmission of current and voltage and signals is realized through the electric friction contact between an electric brush and the slip ring.
When the shock resistance of the related brush device is poor, the phenomena of unstable output, brush disconnection, short service life and the like can occur in a vibration environment, and even the direct damage of the brush structure can occur.
Disclosure of Invention
In order to improve shock resistance of the brush device, the application provides the brush device.
The application provides an electric brush device which adopts the following technical scheme:
a brush device includes at least one brush, a third wire connected to the brush, a fixed structure, and a stabilizing structure, wherein,
the fixing structure includes: the brush holder is provided with a sliding channel for the brush to slide, the sliding channel penetrates through the brush holder, the insulating fixing plate is embedded at one end of the brush holder, which is embedded with the insulating fixing plate, is embedded at 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 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 as to enable the electric brush to be abutted against the slip ring.
Through the technical scheme, the brush holder is embedded in the connecting support, the groove 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, and the insulating fixing plate is embedded in the brush holder, so that the stability of the brush holder is further improved by the insulating fixing plate, and the shock resistance of the brush device is improved.
Specifically, the insulating fixing plate and the guide sleeve can be arranged in a split mode. The insulating fixing plate and the guide sleeve can also be integrally designed.
In the electric brush device, a positioning part is arranged on the surface of the guide sleeve, and the positioning part is clamped between the insulating fixing plate and the connecting bracket.
In the brush device, the stabilizing structure comprises a spring, the spring is positioned in the sliding channel, and two ends of the spring are respectively abutted with the brush and the insulating fixing plate.
In the brush device, the sliding channel comprises a limiting section for stably limiting the sliding of the brush and an inner cavity section for accommodating the stable structure, and the diameter of the cross section of the inner cavity section perpendicular to the sliding direction of the brush is between the diameter of an circumscribed circle and an inscribed circle of the cross 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 source.
Specifically, the crimping connector comprises a male head and a female head, wherein the male head and the female head are connected in a plug-in 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 lead can be pulled out from the front end of the brush holder, so that the replacement of the electric brush and the third lead can be realized.
In the brush device, the brush holder, the insulating fixing plate and the guide sleeve are made of wear-resistant insulating materials.
The 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 wire 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 wire connected with the second circuit board.
In the 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, through grooves for the first wires and the second wires to penetrate out are formed in the positions, opposite to the grooves, of the insulating fixing plate, and the through grooves for the first wires and the second wires to penetrate out are sealed.
In the brush device, electromagnetic shielding wires are arranged outside the first wire, the second wire and the third wire, and the electromagnetic shielding wires are lapped with equipment and a connecting bracket of a non-rotating system.
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 the 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 stabilizing structure, the crimping connector and the sliding channel, the stable, reliable and shock-resistant operation is realized, and the replacement of the brush after abrasion is convenient and quick;
3. through the arrangement of the rotating speed measuring assembly and the vibration measuring assembly, the rotating speed real-time monitoring of the propeller is ensured, and the real-time monitoring of the vibration of power equipment near the propeller is realized;
4. the arrangement of the electromagnetic shielding wire ensures the anti-interference capability of signal transmission and the redundancy design of static electricity release;
5. the modularized design, simple structure, easy dismounting, function integration not only provides screw displacement function power supply demand, has realized the real-time collection and the monitoring of rotational speed signal and vibration signal moreover, and the reliability is high, and maintainability is good.
Drawings
Fig. 1 is a schematic perspective view of a brush assembly according to an embodiment of the present application.
Fig. 2 is a two-dimensional cross-sectional view of the brush assembly of fig. 1 taken in a plane through the axis of the bore segment.
Reference numerals illustrate: 1. a brush holder; 2. an insulating fixing plate; 3. a connecting bracket; 4. a spring; 5. a guide sleeve; 6. a brush; 7. a third wire;
8. a rotation speed sensor; 9. a first circuit board; 10. a first wire;
11. an acceleration sensor; 12. a second circuit board; 13. a second wire;
14. a crimping joint;
15. a limiting section; 16. an inner lumen section; 17. a groove; 18. a through groove; 19. a positioning part;
20. an electromagnetic shielding wire.
Detailed Description
The application is described in further detail below with reference to fig. 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 brush 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 a brush 6 device.
Referring to fig. 1 and 2, a brush 6 device includes at least one brush 6, a third wire 7 connected to the brush 6, a fixing structure providing a sliding channel for accommodating the brush 6 and improving vibration resistance and reliability of the brush 6 as a whole, and a stabilizing structure for driving the brush 6 to slide in the sliding channel so as to make the brush 6 abut against a slip ring, the third wire 7 being connected to a power source, thereby realizing power supply to the brush 6.
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, an electric brush 6 is located in the sliding channel and is in sliding connection 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. One side of the connecting bracket 3 is provided with a second clamping groove, and one end of the brush holder 1 embedded with the insulating fixing plate 2 is clamped in the second clamping groove, so that one end of the brush holder 1 embedded with the insulating fixing plate 2 is embedded in the connecting bracket 3. The brush holder 1 is fixedly connected with the connecting support 3, for example, the brush holder 1 and the connecting support 3 can be fixedly connected through bolts, the guide sleeve 5 penetrates through the insulating fixing plate 2 and the connecting support 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 support 3. The locating part 19 plays a limiting role on the insulating fixed plate 2, so that the insulating fixed plate 2 cannot move in the first clamping groove, and meanwhile, the insulating fixed plate 2 and the connecting support 3 jointly limit the locating part 19, so that the guide sleeve 5 is connected more stably. The third conducting wire 7 passes through the guide sleeve 5 from the sliding channel to be connected with a power supply, and the third conducting wire 7 can freely move through a hole in the middle of the guide sleeve 5. The connection bracket 3 is fixed to a device of a non-rotating system, for example, the connection bracket 3 may be fixed to the engine housing by bolting.
Fixed knot constructs through above-mentioned four partial unsmooth location setting, only needs brush holder 1 and linking bridge 3 between fixed, and uide bushing 5 and insulating fixed plate 2 can be fixed at device system internal stability, and simple structure, easy dismounting, whole device's shock resistance improve, and modularized 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 insulating resistance of the wear-resistant insulating materials meet the electric gap and creepage distance of each carbon brush assembly, and the brush holder 1, the insulating fixing plate 2 and the guide sleeve 5 basically form a closed insulating space, so that the insulating performance of the electric brush 6 device is improved. At least two brushes 6 are provided per fixing structure, i.e. the number of third wires 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 both ends of the spring 4 are respectively abutted with the brush 6 and the insulating fixing plate 2. When the electric brush 6 is worn, the spring 4 can infer 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 cross section of the inner cavity section 16 perpendicular to the sliding direction of the electric brush 6 is between the diameter of an circumscribed circle and an inscribed circle of the cross section of the limiting section 15 perpendicular to the sliding direction of the electric brush 6, and the cross section of the limiting section 15 perpendicular to the sliding direction of the electric brush 6 can be square matched with the electric brush 6. The brush 6 is spacing by spacing section 15 is accurate for brush 6 can be stabilized along sliding channel's length square slip, simultaneously because spring 4 is located inner chamber section 16, makes the tip of spring 4 support behind spacing section 15 perpendicular to brush 6 direction of movement's the terminal surface, spacing section 15 perpendicular to brush 6 direction of movement's terminal surface is spacing to spring 4, makes spring 4 can not fall out sliding channel.
The third wire 7 is connected with a crimp connection 14, the crimp connection 14 is connected with a power supply, the crimp connection 14 comprises a male connector and a female connector, the male connector and the female connector are connected in a plug-in mode, and the maximum outer diameter of the male connector or the female connector 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 extent, the connection between the crimping connector 14 of the original third wire 7 and the power wire 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 is crimped with the power wire of the power supply, the new electric brush 6 is clamped into the sliding channel, namely the quick replacement of the electric brush 6 is completed, 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 replaced more conveniently.
The brush 6 device further comprises a rotational speed measuring assembly and a vibration measuring assembly, wherein the rotational speed measuring assembly comprises a first circuit board 9 fixed on the brush holder 1, a rotational speed sensor 8 fixed on the first circuit board 9 and a first wire 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 wire 13 connected with the second circuit board 12. The brush holder 1 is provided with a groove 17, the groove 17 is formed on one side of the brush holder 1 embedded with the insulating fixing plate 2 and extends away from the insulating fixing plate 2, and the first circuit board 9 and the second circuit board 12 are fixed in the groove 17, for example, a mechanical connection mode through bolt fixing or the like or a sealing glue filling mode can be adopted, and the fixed connection between the rotation speed sensor 8 and the first circuit board 9 and the fixed connection between the acceleration sensor and the second circuit board 12 are preferably welded and fixed. The insulating fixing plate 2 is provided with a through groove 18 for the first wire 10 and the second wire 13 to pass through at the position opposite to the groove 17, and after the first wire 10 and the second wire 13 pass through the through groove 18, the through groove 18 is sealed by sealant, and the first wire 10 and the second wire 13 passing through 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 power equipment nearby the propeller are realized.
Electromagnetic shielding wires 20 are arranged outside the first conducting wire 10, the second conducting wire 13 and the third conducting wire 7, and the electromagnetic shielding wires 20 are overlapped with equipment and the connecting bracket 3 of a non-rotating system. The first wire 10, the second wire 13 and the third wire 7 are guaranteed to resist electromagnetic interference, and the redundant design of switching on and discharging static electricity of equipment of a non-rotating system is realized.
The working process of the brush 6 device of the application is as follows: the connecting bracket 3 is fixed on the engine shell of a non-rotating system through bolts, the electric brush 6 is abutted with the slip ring, the first lead 10, the second lead 13 and the third lead 7 are connected with a power supply, the electric brush 6 can be stably abutted with 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 lead 7 and the power line of the power supply is disconnected, then the third lead 7 connected with the electric brush 6 is pulled out of the sliding channel, the third lead 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 into the sliding channel, and the crimping connector 14 connected with the end part of the third lead 7 and the power line of the power supply are crimped, so that the quick replacement of the electric brush 6 is completed.
The device simple structure, easy dismounting, in will spring 4 card in the slip passageway during the installation, rotational speed measurement subassembly and vibration measurement subassembly are fixed in recess 17, then inlay insulating fixed plate 2 and locate brush holder 1 tip, pass insulating fixed plate 2 with uide bushing 5 one section again, inlay brush holder 1 and insulating fixed plate 2 wholly and locate linking bridge 3 again to pass through the bolt fastening with brush holder 1 and insulating support, install brush 6 at last and accomplish the installation.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (9)
1. A brush assembly, characterized by: comprises at least one electric brush (6), a third wire (7) connected with the electric brush (6), a fixed structure and a stable structure, wherein,
the fixing structure includes: the electric brush comprises a brush holder (1), an insulating fixing plate (2), a guide sleeve (5) and a connecting support (3), wherein the brush holder (1) is provided with a sliding channel for a brush (6) to slide, the sliding channel penetrates through the brush holder (1), the insulating fixing plate (2) is embedded at one end of the brush holder (1), one end of the brush holder (1) embedded with the insulating fixing plate (2) is embedded at the connecting support (3), the guide sleeve (5) penetrates through the insulating fixing plate (2) and the connecting support (3), and a third conducting wire (7) penetrates through the guide sleeve (5) from the sliding channel to be connected with a power supply;
the stable structure is used for driving the electric brush (6) to slide in the sliding channel so as to enable the electric brush (6) to be abutted against the slip ring;
the brush holder comprises a brush holder body and 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 body (1), a rotating speed sensor (8) fixed on the first circuit board (9) and a first wire (10) connected with the first circuit board (9), and the vibration measuring assembly comprises a second circuit board (12) fixed on the brush holder body (1), an acceleration sensor (11) fixed on the second circuit board (12) and a second wire (13) connected with the second circuit board (12).
2. A brush assembly according to claim 1, wherein: the surface of uide bushing (5) is provided with location portion (19), and location portion (19) card is located between insulating fixed plate (2) and linking bridge (3).
3. A brush assembly according to claim 1, wherein: the stabilizing structure comprises a spring (4), the spring (4) is positioned in the sliding channel, and two ends of the spring (4) are respectively abutted with 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, wherein the diameter of the cross section of the inner cavity section (16) perpendicular to the sliding direction of the electric brush (6) is between the diameter of an circumscribed circle and an inscribed circle of the cross section of the limiting section (15).
5. A brush assembly according to claim 1, wherein: the third wire (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 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).
8. A brush assembly according to claim 7, wherein: the insulating fixing plate (2) is provided with through grooves (18) for the first wires (10) and the second wires (13) to penetrate out at positions opposite to the grooves (17), and the through grooves (18) provided with the first wires (10) and the second wires (13) in a penetrating mode are subjected to sealing treatment.
9. A brush assembly according to claim 1, wherein: electromagnetic shielding wires (20) are arranged outside the first lead (10), the second lead (13) and the third lead (7), and the electromagnetic shielding wires (20) are lapped with equipment and a connecting bracket (3) of a non-rotating system.
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 CN114498230A (en) | 2022-05-13 |
| CN114498230B true CN114498230B (en) | 2023-10-17 |
Family
ID=81493438
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 (6)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007129890A (en) * | 2005-10-07 | 2007-05-24 | Denso Corp | Brush unit of rotating electric machine for vehicle |
-
2021
- 2021-12-20 CN CN202111564559.3A patent/CN114498230B/en active Active
Patent Citations (6)
| 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 |
| 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 |
|---|---|
| CN114498230A (en) | 2022-05-13 |
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