CN115663550A - Pressure-adjustable carbon brush pressing mechanism - Google Patents
Pressure-adjustable carbon brush pressing mechanism Download PDFInfo
- Publication number
- CN115663550A CN115663550A CN202211089405.8A CN202211089405A CN115663550A CN 115663550 A CN115663550 A CN 115663550A CN 202211089405 A CN202211089405 A CN 202211089405A CN 115663550 A CN115663550 A CN 115663550A
- Authority
- CN
- China
- Prior art keywords
- carbon brush
- spring
- guide sleeve
- push rod
- lever
- 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.)
- Granted
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 87
- 239000004020 conductor Substances 0.000 claims abstract description 15
- 244000185238 Lophostemon confertus Species 0.000 claims abstract description 11
- 239000011810 insulating material Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
Landscapes
- Motor Or Generator Current Collectors (AREA)
Abstract
The invention provides a pressure-adjustable carbon brush pressing mechanism which comprises a right-angle conductor fixedly connected with an output polar plate, a lever hinged seat, a push rod, a locking nut, a spring puller bolt, a spring guide sleeve, a lever, a carbon brush box and a carbon brush pressed on the input polar plate. The spring jacking bolt is screwed into the spring guide sleeve through threads and compresses the spring, the pressing force of the spring is transmitted to the lever through the push rod, the lever amplifies the pressing force of the spring and transmits the amplified pressing force to the carbon brush, and the carbon brush is compressed on the input polar plate. When the input polar plate and the output polar plate rotate relatively, the carbon brush slides on the input polar plate. The length of the spring jacking bolt screwed into the spring guide sleeve is increased, so that the pressing force of the carbon brush on the input polar plate can be kept, and conditions are provided for through-flow of large current. The invention adopts the combination of the spring pressure and the lever mechanism, which not only can increase the pressing force of the carbon brush to provide conditions for the through-flow of large current, but also can adjust the pressing force of the spring to keep the pressing force of the carbon brush unchanged after the carbon brush is worn.
Description
Technical Field
The invention belongs to the field of electrical equipment, and particularly relates to a pressure-adjustable carbon brush pressing mechanism.
Background
The carbon brush of the power supply slip ring is a device for transmitting energy between a fixed part and a rotating part of a rotating machine, and the carbon brush is pressed on the slip ring by a volute pressure spring generally. When the carbon brush is worn, the pressing force of the spring is reduced, the pressing force cannot be adjusted and increased, and the carbon brush can be ignited and even burnt out.
The compression pressure of the common carbon brush is generally 200-250 g/cm 2 The current capacity of the common carbon brush is generally 10-12A/cm under the pressure 2 . For a high-current slip ring with a single-path current capacity of hundreds of kiloamperes, a plurality of carbon brushes are mounted on each path. In order to reduce the number of carbon brushes installed, the current capacity of each carbon brush in the circuit is increased. One of measures for increasing the current capacity of the carbon brush is to increase the pressing force of the carbon brush. The compression pressure of the common carbon brush is generally 200-250 g/cm 2 The requirement is difficult to meet, and the pressing force of the volute pressure spring of the existing carbon brush is difficult to be made larger.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the pressure-adjustable carbon brush pressing mechanism, which adopts the combination of spring pressure and a lever mechanism, can increase the pressing force of the carbon brush to provide conditions for through-flow of large current, and can adjust the pressing force of the spring to keep the pressing force of the carbon brush unchanged after the carbon brush is worn.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a pressure-adjustable carbon brush pressing mechanism comprises a right-angle conductor fixedly connected with an output polar plate, a push rod hinge base, a push rod, a locking nut, a spring jacking bolt, a spring guide sleeve, a lever, a carbon brush box and a carbon brush pressed on the input polar plate; the spring guide sleeve is fixedly connected to the end part of the right-angle conductor which is not fixedly connected with the output polar plate; the push rod hinge seat is fixedly connected to the lower part of the right-angle conductor; one end of the lever is hinged to the push rod hinge seat, and the other end of the lever is hinged to the carbon brush box; the carbon brush is positioned in the carbon brush box, and the lower end face of the carbon brush is contacted with the input polar plate; one end of the push rod is positioned in the spring guide sleeve, the end of the push rod can slide up and down in the spring guide sleeve, and the end of the push rod, which is positioned outside the spring guide sleeve, is connected with the lever; the spring is positioned on the upper part of the push rod in the spring guide sleeve; on the upper part of the spring, a spring puller bolt is screwed into the spring guide sleeve through the threaded connection with the spring guide sleeve and tightly presses the spring; the locking nut locks the spring puller bolt.
Furthermore, one end of the push rod, which is positioned in the spring guide sleeve, is a cylinder and forms a cylinder pair with the spring guide sleeve; one end of the push rod outside the spring guide sleeve is connected with a cylindrical pin, and the cylindrical pin and a long hole in the lever form a pin groove pair.
Further, the lever is made of an insulating material.
Furthermore, a wire nose is linked on the carbon brush braid and is fixedly connected with the right-angle conductor, so that the input polar plate and the output polar plate are conducted.
Furthermore, the pressing force of the spring is transmitted to the lever through the push rod, the lever amplifies the pressing force of the spring and transmits the amplified pressing force to the carbon brush, and the carbon brush is pressed on the input polar plate to provide conditions for high-current through flow; when the input polar plate and the output polar plate rotate relatively, the carbon brush slides on the input polar plate.
The invention has the advantages that:
1. according to the invention, the combination of the spring and the lever mechanism is adopted, the lever amplifies the pressing force of the spring and transmits the amplified pressing force to the carbon brush, and compared with the carbon brush directly pressed by the spring, the pressing force of the carbon brush can be multiplied, and the through-current capacity of the unit area of the carbon brush can be effectively increased. If the invention is used for the high-current slip ring with single-path through-current capacity of hundreds of kiloamperes, the installation quantity of the carbon brushes can be reduced.
2. When the carbon brush is worn, the spring extends to cause the pressing force of the carbon brush to be reduced, the length of the spring tightening bolt screwed into the spring guide sleeve is increased, the length of the spring can be adjusted to the original value, the pressing force of the spring on the lever is kept unchanged, and therefore the pressing force of the carbon brush on the input polar plate is kept unchanged.
Drawings
Fig. 1 is a cross-sectional view of a pressure-adjustable carbon brush pressing mechanism according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a pressure-adjustable carbon brush pressing mechanism according to an embodiment of the invention;
fig. 3 is a schematic diagram of a push rod structure of the pressure-adjustable carbon brush pressing mechanism according to the embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention. In addition, the technical features involved in the respective embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1-2, the pressure-adjustable carbon brush pressing mechanism of the present invention includes a right-angle conductor 2, a push rod hinge base 3, a push rod 4, a lock nut 5, a spring tightening bolt 6, a spring 7, a spring guide sleeve 8, a lever 9, a carbon brush box 10, and a carbon brush 11. One end of the right-angle conductor 2 is fixedly connected with the output pole plate 1, and the spring guide sleeve 8 is fixedly connected with the other end of the right-angle conductor 2. The push rod hinge base 3 is fixedly connected to the lower part of the right-angle conductor 2; the lever 9 is an electric insulating part, one end of the lever 9 is hinged on the push rod hinged seat 3, and the other end of the lever 9 is hinged with a carbon brush box 10; the carbon brush 11 is positioned in the carbon brush box 10, and the lower end face of the carbon brush 11 is in contact with the input pole plate 12; the spring 7 is positioned at the upper part of the push rod 4 in the spring guide sleeve 8; on the upper part of the spring 7, a spring puller bolt 6 is screwed into the spring guide sleeve 8 through the threaded connection with the spring guide sleeve 8 and presses the spring 7 tightly; the locking nut 5 locks the spring puller bolt 6. The lever 9 is made of an insulating material.
As shown in fig. 2, the carbon brush braid 13 connected to the carbon brush 11 passes through the slot 17 of the carbon brush box 10, and is fixedly connected to the right-angle conductor 2 through the wire nose 16 connected to the carbon brush braid 13, so that the input electrode plate 12 and the output electrode plate 1 can be electrically connected.
As shown in fig. 1-3, the push rod 4 has a cylindrical body 4-1 at the upper end and a U-shaped structure at the lower end. The cylinder 4-1 is positioned in the spring guide sleeve 8 and forms a cylinder pair with the spring guide sleeve 8, and the end of the push rod 4 can slide up and down in the spring guide sleeve 8. As shown in FIG. 3, a pin shaft hole 4-2 is formed on each of the left and right sides of the U-shaped structure of the push rod 4, and the two pin shaft holes 4-2 are coaxial. As shown in FIG. 2, the part of the lever 9 with the long hole 15 is positioned in the U-shaped structure of the push rod 4, and the cylindrical pins 14 are positioned in the pin shaft holes 4-2 at the left and right sides of the U-shaped structure of the push rod 4, and form a pin-slot pair with the long hole 15 through the long hole 15.
The pressing force of the spring 7 is transmitted to the lever 9 through the push rod 4, the lever 9 amplifies the pressing force of the spring 7 and transmits the amplified pressing force to the carbon brush 11, and the carbon brush 11 is pressed on the input pole plate 12 to provide conditions for high-current through-flow. When the input polar plate 12 and the output polar plate 1 rotate relatively, the carbon brush 11 slides on the input polar plate 12, and the current on the input polar plate 12 flows to the output polar plate 1 through the carbon brush 11, the carbon brush braid 13 and the right-angle conductor 2.
When the carbon brush 11 is worn, the spring 7 is extended, causing the pressing force of the carbon brush 11 to be lowered. The length of the spring puller bolt 6 screwed into the spring guide sleeve 8 is increased, so that the spring 7 can be restored to the length before the carbon brush 11 is worn, the pressing force of the spring 7 on the lever 9 is kept unchanged, and the pressing force of the carbon brush 11 on the input polar plate 12 is kept unchanged.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. The utility model provides a pressure adjustable carbon brush hold-down mechanism which characterized in that: the device comprises a right-angle conductor (2) fixedly connected with an output polar plate (1), a push rod hinged seat (3), a push rod (4), a locking nut (5), a spring tightening bolt (6), a spring (7), a spring guide sleeve (8), a lever (9), a carbon brush box (10) and a carbon brush (11) pressed on an input polar plate (12); the spring guide sleeve (8) is fixedly connected to the end part of the right-angle conductor (2) which is not fixedly connected with the output polar plate (1); the push rod hinge seat (3) is fixedly connected to the lower part of the right-angle conductor (2); one end of the lever (9) is hinged on the push rod hinge seat (3), and the other end is hinged with a carbon brush box (10); the carbon brush (11) is positioned in the carbon brush box (10), and the lower end face of the carbon brush (11) is in contact with the input polar plate (12); one end of the push rod (4) is positioned in the spring guide sleeve (8), and the end of the push rod (4) can slide up and down in the spring guide sleeve (8); one end of the push rod (4) positioned outside the spring guide sleeve (8) is connected with the lever (9); the spring (7) is positioned at the upper part of the push rod (4) in the spring guide sleeve (8); on the upper part of the spring (7), a spring puller bolt (6) is screwed into the spring guide sleeve (8) through the threaded connection with the spring guide sleeve (8) and presses the spring (7); the locking nut (5) locks the spring puller bolt (6); when the input polar plate (12) and the output polar plate (1) rotate relatively, the carbon brush (11) slides on the input polar plate (12).
2. The pressure-adjustable carbon brush pressing mechanism as claimed in claim 1, characterized in that the end of the push rod (4) located in the spring guide sleeve (8) is a cylinder and forms a cylinder pair with the spring guide sleeve (8); one end of the push rod (4) outside the spring guide sleeve (8) is connected with a cylindrical pin (14), and the cylindrical pin (14) and a long hole (15) in the lever (9) form a pin-slot pair.
3. A pressure-adjustable carbon brush hold-down mechanism as claimed in claim 1, characterized in that the lever (9) is made of an insulating material.
4. The pressure-adjustable carbon brush pressing mechanism according to claim 1, wherein a wire nose (16) is connected to the carbon brush braid (13), and the wire nose (16) is fixedly connected with the right-angle conductor (2) to achieve conduction between the input electrode plate (12) and the output electrode plate (1).
5. A pressure-adjustable carbon brush hold-down mechanism as claimed in claim 1, characterized in that the hold-down force of the spring (7) is transmitted to the lever (9) via the push rod (4), the lever (9) amplifies the hold-down force of the spring (7) and transmits it to the carbon brush (11), and the carbon brush (11) is held down on the input pole plate (12) to provide for a high current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211089405.8A CN115663550B (en) | 2022-09-07 | 2022-09-07 | Carbon brush hold-down mechanism with adjustable pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211089405.8A CN115663550B (en) | 2022-09-07 | 2022-09-07 | Carbon brush hold-down mechanism with adjustable pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115663550A true CN115663550A (en) | 2023-01-31 |
| CN115663550B CN115663550B (en) | 2023-12-08 |
Family
ID=84983371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211089405.8A Active CN115663550B (en) | 2022-09-07 | 2022-09-07 | Carbon brush hold-down mechanism with adjustable pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115663550B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191500459A (en) * | 1915-01-12 | 1915-10-21 | Albert Burrows Back | Improvements in, and relating to, Brush Holders, for Dynamo-electric Machines. |
| GB204566A (en) * | 1922-11-03 | 1923-10-04 | British Thomson Houston Co Ltd | Improvements in and relating to dynamo-electric machines |
| CH116447A (en) * | 1925-09-16 | 1926-09-01 | Oerlikon Maschf | Double contact device for electrical switchgear. |
| US4831302A (en) * | 1986-10-23 | 1989-05-16 | G. Dietrich GmbH Spezialfabrik fur Burstenhalter u. Kunststoffteile | Apparatus for monitoring the wear upon carbon brushes in electrical machines |
| EP0455253A2 (en) * | 1990-05-04 | 1991-11-06 | Schunk Metall und Kunststoff GmbH | Brush holder |
| KR20020054398A (en) * | 2000-12-28 | 2002-07-08 | 이구택 | Brush holder of DC motor for preventing motor-breakdown by brush wear |
| US20170334087A1 (en) * | 2001-03-13 | 2017-11-23 | Sawstop Holding Llc | Safety systems for power equipment |
| CN114784584A (en) * | 2022-03-31 | 2022-07-22 | 华能伊敏煤电有限责任公司 | High-low pressure ring electric brush with pressure compensation |
| CN114792918A (en) * | 2022-03-31 | 2022-07-26 | 华能伊敏煤电有限责任公司 | Stable-contact high-low voltage ring electric brush |
-
2022
- 2022-09-07 CN CN202211089405.8A patent/CN115663550B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191500459A (en) * | 1915-01-12 | 1915-10-21 | Albert Burrows Back | Improvements in, and relating to, Brush Holders, for Dynamo-electric Machines. |
| GB204566A (en) * | 1922-11-03 | 1923-10-04 | British Thomson Houston Co Ltd | Improvements in and relating to dynamo-electric machines |
| CH116447A (en) * | 1925-09-16 | 1926-09-01 | Oerlikon Maschf | Double contact device for electrical switchgear. |
| US4831302A (en) * | 1986-10-23 | 1989-05-16 | G. Dietrich GmbH Spezialfabrik fur Burstenhalter u. Kunststoffteile | Apparatus for monitoring the wear upon carbon brushes in electrical machines |
| EP0455253A2 (en) * | 1990-05-04 | 1991-11-06 | Schunk Metall und Kunststoff GmbH | Brush holder |
| KR20020054398A (en) * | 2000-12-28 | 2002-07-08 | 이구택 | Brush holder of DC motor for preventing motor-breakdown by brush wear |
| US20170334087A1 (en) * | 2001-03-13 | 2017-11-23 | Sawstop Holding Llc | Safety systems for power equipment |
| CN114784584A (en) * | 2022-03-31 | 2022-07-22 | 华能伊敏煤电有限责任公司 | High-low pressure ring electric brush with pressure compensation |
| CN114792918A (en) * | 2022-03-31 | 2022-07-26 | 华能伊敏煤电有限责任公司 | Stable-contact high-low voltage ring electric brush |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115663550B (en) | 2023-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203674416U (en) | Wire connection fixing device | |
| CN115663550A (en) | Pressure-adjustable carbon brush pressing mechanism | |
| CN112038795B (en) | Bypass cable end for distribution line ground potential live working | |
| CN103840277A (en) | Electrification connection wire clamp of 66 kV power transmission line electricity leading wire | |
| CN207304944U (en) | A kind of electrical connection device of the curing molding equipment of PTC heater part | |
| CN201112092Y (en) | Non-encapsulated dry-type transformer coil axial direction pressing device | |
| CN202616432U (en) | Transitional crimping wire clamp for copper and aluminum wire | |
| CN212303662U (en) | Silicon stack press-mounting mechanism for thyristor of converter valve | |
| CN207489810U (en) | Pressure resistance and the EL test fixtures of a kind of solar cell module | |
| CN205194926U (en) | Semiconductor laser burn -in screen socket | |
| CN111755428A (en) | Silicon stack press-mounting mechanism for thyristor of converter valve | |
| CN202905526U (en) | Wrench specially used for disconnecting-link static contact adjustment | |
| CN205752654U (en) | A kind of high-current supply plugging hole component | |
| CN205429236U (en) | Electric plug system for confession | |
| CN221124763U (en) | Insulation monitoring device | |
| CN201122669Y (en) | Terminal bench | |
| CN213184639U (en) | Copper braided strap transition device | |
| CN203218082U (en) | Transformer conducting rod cable clamp | |
| CN210866533U (en) | Conducting rod binding post with prestressing force | |
| CN211017454U (en) | Lightning-proof electricity-testing grounding ring | |
| CN215343008U (en) | Quick series-parallel connection conductive connection copper bar | |
| CN202323076U (en) | Electrophoresis current collector for vehicle frame | |
| CN206179721U (en) | Load switch switch -fuse combination electrical equipment's pressure spring assembly fixture | |
| CN220474553U (en) | Circuit breaker binding post | |
| CN214841654U (en) | Engine oil electric heating core capable of being quickly assembled and disassembled |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |