CN220680359U - Carbon brush pre-grinding device - Google Patents
Carbon brush pre-grinding device Download PDFInfo
- Publication number
- CN220680359U CN220680359U CN202321842101.4U CN202321842101U CN220680359U CN 220680359 U CN220680359 U CN 220680359U CN 202321842101 U CN202321842101 U CN 202321842101U CN 220680359 U CN220680359 U CN 220680359U
- Authority
- CN
- China
- Prior art keywords
- carbon brush
- collecting ring
- polishing
- ring arc
- grinding device
- 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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Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 62
- 238000005498 polishing Methods 0.000 claims abstract description 36
- 230000007704 transition Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 244000137852 Petrea volubilis Species 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000701 coagulant Substances 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The utility model provides a carbon brush pre-grinding device which comprises a mounting frame, wherein a rotating shaft is arranged on the mounting frame, one end of the rotating shaft is provided with a driving wheel, the rotating shaft is driven by a driving mechanism, a collecting ring arc is arranged above the driving wheel, the radius of the collecting ring arc is consistent with the radius of a collecting ring which is required to be installed and matched with a carbon brush, a grinding belt is sleeved on the collecting ring arc and the driving wheel, a brush holder is arranged on one side, far away from the driving wheel, of the collecting ring arc, the carbon brush to be ground is installed on the brush holder, and the carbon brush is tightly attached to the grinding belt. The device simulates carbon brush polishing under the operation condition of the collecting ring, pre-polishes the carbon brush, and finishes polishing of a new carbon brush in advance before replacement.
Description
Technical Field
The utility model relates to the technical field of electrical engineering generators, in particular to a carbon brush pre-grinding device.
Background
The carbon brush is a device for transmitting electric energy between a fixed part and a rotating part of a hydroelectric generator or other rotary machinery, is generally made of pure carbon and a coagulant, is called a carbon brush, is generally square in shape, is clamped in a brush holder, is tightly pressed on a collecting ring through a spring clamp, and transmits the electric energy to a rotor coil to generate excitation when a generator rotor rotates.
However, in actual operation of the generator, the phenomenon of carbon brush sparking is very common, and one of the reasons for the sparking is that the contact surface of the carbon brush and the collecting ring is small, the contact resistance is large, and the temperature is continuously increased in the operation process to cause the sparking. When the ignition problem occurs, the ignition problem may be caused if the ignition problem is not eliminated in time. Therefore, when a new carbon brush is installed, the contact end face of the carbon brush is polished. The polishing of the end face of the carbon brush is carried out when the collecting ring does not rotate, namely the machine set is stopped, sand paper for polishing is placed between the contact surfaces of the carbon brush and the collecting ring, and after the spring clamp compresses the carbon brush on the collecting ring surface, the sand paper is pumped up and down to finish polishing. Because the collecting ring is static during polishing, the polishing effect cannot be good due to the polishing direction and the polishing contact effect. In addition, sometimes the hydroelectric generator can be continuously operated, and the situation that the carbon brush needs to be replaced when the carbon brush is ignited exists, because the collecting ring rotates, exciting current is applied to the collecting ring through the carbon brush, the novel carbon brush cannot be manually polished at this time, and only the novel carbon brush can be directly installed and polished through the rotation of the collecting ring.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a carbon brush pre-grinding device which simulates carbon brush grinding under the running condition of a collecting ring, pre-grinds the carbon brush and finishes grinding of a new carbon brush in advance before replacement.
In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a carbon brush pre-grinding device, includes the mounting bracket, is equipped with the axis of rotation on the mounting bracket, and axis of rotation one end is equipped with the drive wheel, and the axis of rotation passes through actuating mechanism drive, and the drive wheel top is equipped with the collecting ring arc, and the radius of collecting ring arc is unanimous with the radius of carbon brush needs installation complex collecting ring, and the belt suit of polishing is on collecting ring arc and drive wheel, and one side that the collecting ring arc kept away from the drive wheel is equipped with the brush holder, and the carbon brush of waiting to polish is installed on the brush holder, and the carbon brush is hugged closely the belt setting of polishing.
In the preferred scheme, the driving mechanism comprises a driving motor, a driving bevel gear is arranged at the output end of the driving motor, and a driven bevel gear meshed with the driving bevel gear is arranged on the rotating shaft.
In the preferred scheme, driving motor passes through the wire and is connected with the battery, is equipped with control switch on the wire.
In the preferred scheme, the slip ring arc both ends are equipped with the transition fillet.
The carbon brush pre-grinding device provided by the utility model can simulate the carbon brush grinding under the operation condition of the collecting ring, has a better grinding effect, can finish the grinding of a new carbon brush in advance before replacement, does not need manual operation and is automatically finished, and the grinding efficiency is greatly improved. The novel carbon brush can be in good contact with the collecting ring after polishing, so that the carbon brush sparking fault caused by insufficient contact surface is reduced, the personal danger of carbon brush sparking treatment is avoided, and the operation reliability of equipment is improved.
Drawings
The utility model is further described below with reference to the accompanying drawings and examples of implementation:
FIG. 1 is a front view of the present utility model;
FIG. 2 is a side view of the present utility model;
in the figure: the device comprises a mounting frame 1, a rotating shaft 2, a driving wheel 3, a collecting ring arc 4, carbon brushes 5, a polishing belt 6, a brush holder 7, a driving motor 8, a driving bevel gear 9, a driven bevel gear 10, a storage battery 11 and a control switch 12.
Detailed Description
As shown in fig. 1-2, a carbon brush premounting device, including mounting bracket 1, in this embodiment, mounting bracket 1 is "L" shape support, during the concrete use, mounting bracket 1 also can set up to the box body structure, be equipped with axis of rotation 2 on mounting bracket 1, axis of rotation 2 passes through the bearing rotation and installs on mounting bracket 1, axis of rotation 2 one end is equipped with drive wheel 3, axis of rotation 2 passes through actuating mechanism drive, drive wheel 3 top is equipped with collecting ring arc 4, collecting ring arc 4's radius is unanimous with carbon brush 5 radius that needs installation complex collecting ring, polishing belt 6 suit is on collecting ring arc 4 and drive wheel 3, polishing belt 6 pastes thin polishing material for the belt outside, polishing belt 6's width is greater than carbon brush 5's width, can cover carbon brush 5's working face completely. The polishing belt 6 rotates to simulate the rotation of the collecting ring, the rotation direction of the polishing belt 6 is consistent with the rotation direction of the actual collecting ring, one side, far away from the driving wheel 3, of the collecting ring arc 4 is provided with a brush holder 7, a carbon brush 5 to be polished is mounted on the brush holder 7, and the carbon brush 5 is tightly clamped by a spring on the brush holder 7 to be attached to the polishing belt 6.
The driving mechanism comprises a driving motor 8, a driving bevel gear 9 is arranged at the output end of the driving motor 8, and a driven bevel gear 10 meshed with the driving bevel gear 9 is arranged on the rotating shaft 2.
The driving bevel gear 9 is driven by the driving motor 8 to rotate, and the driving shaft 2 is driven under the meshing action of the driving bevel gear 9 and the driven bevel gear 10.
The transmission structure of the bevel gear can also be replaced by belt transmission or chain transmission, etc.
The driving motor 8 is connected with the storage battery 11 through a wire, the storage battery 11 is chargeable, a control switch 12 is arranged on the wire, and the on-off control of the driving motor 8 is realized through the on-off of the switch 12.
Preferably, the two ends of the collecting ring arc 4 are provided with transition fillets. Through setting up the transition fillet, prevent that the dead angle at collecting ring arc 4 both ends from influencing the rotation of belt 6 of polishing, reduce the frictional force that belt 6 removed of polishing.
The carbon brush pre-grinding device has the following working principle:
the polishing belt 6 is sleeved on the collector ring arc 4 and the driving wheel 3 and is in annular arrangement, the carbon brush 5 to be polished is installed in the brush holder 7 of the grinding device according to the actual operation installation mode, and the end face of the carbon brush is tightly attached to the polishing belt 6 under the pressure of a spring clamp of the brush holder 7. The control switch 12 is closed, the driving motor 8 operates to drive the rotating shaft 2 to rotate, the polishing belt 6 is driven to rotate, the rotating direction of the polishing belt 6 is consistent with the actual running direction of the collecting ring, and the fine polishing material adhered on the surface of the polishing belt 6 finishes pre-polishing of the carbon brush 5.
The device can simulate the carbon brush under the collector ring operation condition and polish, and the effect of polishing is better, can accomplish polishing of new carbon brush in advance before changing, and this polishing need not manual operation automatic completion, improves polishing efficiency greatly. The novel carbon brush can be in good contact with the collecting ring after polishing, so that the carbon brush sparking fault caused by insufficient contact surface is reduced, the personal danger of carbon brush sparking treatment is avoided, and the operation reliability of equipment is improved.
Claims (4)
1. A carbon brush pre-grinding device which is characterized in that: including mounting bracket (1), be equipped with axis of rotation (2) on mounting bracket (1), axis of rotation (2) one end is equipped with drive wheel (3), axis of rotation (2) pass through actuating mechanism drive, drive wheel (3) top is equipped with collecting ring arc (4), radius and carbon brush (5) of collecting ring arc (4) need install complex collecting ring's radius unanimous, belt (6) suit of polishing is on collecting ring arc (4) and drive wheel (3), one side that drive wheel (3) were kept away from to collecting ring arc (4) is equipped with brush holder (7), carbon brush (5) of waiting to polish are installed on brush holder (7), carbon brush (5) are hugged closely belt (6) of polishing and are set up.
2. The carbon brush pre-grinding device according to claim 1, wherein: the driving mechanism comprises a driving motor (8), a driving bevel gear (9) is arranged at the output end of the driving motor (8), and a driven bevel gear (10) meshed with the driving bevel gear (9) is arranged on the rotating shaft (2).
3. The carbon brush pre-grinding device according to claim 2, wherein: the driving motor (8) is connected with the storage battery (11) through a wire, and a control switch (12) is arranged on the wire.
4. The carbon brush pre-grinding device according to claim 1, wherein: and transition fillets are arranged at two ends of the collecting ring arc (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321842101.4U CN220680359U (en) | 2023-07-13 | 2023-07-13 | Carbon brush pre-grinding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321842101.4U CN220680359U (en) | 2023-07-13 | 2023-07-13 | Carbon brush pre-grinding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220680359U true CN220680359U (en) | 2024-03-29 |
Family
ID=90404306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321842101.4U Active CN220680359U (en) | 2023-07-13 | 2023-07-13 | Carbon brush pre-grinding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220680359U (en) |
-
2023
- 2023-07-13 CN CN202321842101.4U patent/CN220680359U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |