CN215659665U - Closed carbon brush grinding tool - Google Patents
Closed carbon brush grinding tool Download PDFInfo
- Publication number
- CN215659665U CN215659665U CN202122400893.7U CN202122400893U CN215659665U CN 215659665 U CN215659665 U CN 215659665U CN 202122400893 U CN202122400893 U CN 202122400893U CN 215659665 U CN215659665 U CN 215659665U
- Authority
- CN
- China
- Prior art keywords
- driven wheel
- grinding
- carbon brush
- wheel
- collecting box
- 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.)
- Active
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 64
- 239000000428 dust Substances 0.000 claims abstract description 43
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims 1
- 229920005372 Plexiglas® Polymers 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 8
- 230000003044 adaptive effect Effects 0.000 abstract description 2
- 239000004744 fabric Substances 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
Images
Landscapes
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The utility model relates to the field of electric power overhaul, in particular to a closed carbon brush grinding tool. The method is applied to carbon brush replacement and grinding work of the stator collecting ring in the maintenance process of the hydroelectric generating set. The dust collection box is internally provided with a driving wheel, a first driven wheel, a second driven wheel and a third driven wheel which are in transmission connection through an abrasive belt, a plane grinding module is fixed between the driving wheel and the first driven wheel, the upper surface of the dust collection box corresponding to the plane grinding module is provided with a flat grinding port, an arc plane grinding module is arranged between the first driven wheel and the second driven wheel, and the center of the third driven wheel is connected with a locking mechanism for adjusting the tightness of the abrasive belt; a carbon brush grinding brush holder obliquely arranged in the dust collecting box is arranged at the right upper part of the dust collecting box; the back side of the dust collecting box is provided with a crank for driving the whole device. The grinding wheel is adopted to move the abrasive cloth, two grinding ports are arranged simultaneously, the plane grinding module and the arc plane grinding module are arranged, the grinding is adaptive to the carbon brush structure, the grinding precision is high, the maintenance labor intensity can be reduced, and the working efficiency is improved.
Description
Technical Field
The utility model relates to the field of electric power overhaul, in particular to a closed carbon brush grinding tool. The method is applied to carbon brush replacement and grinding work of the stator collecting ring in the maintenance process of the hydroelectric generating set.
Background
In the prior art, replacement and installation work of the carbon brushes of the stator collecting rings during C-level (or D-level) maintenance of the hydroelectric generating set are important maintenance items. In the generator maintenance process, part of carbon brushes of the collector ring of the generator set are seriously worn after running, and the worn carbon brushes are not in line with the regulation requirements and need to be replaced. The new carbon brush contact surface can be installed and used after being ground. In the previous maintenance, the carbon brush is usually ground in a manual carbon brush grinding mode. However, the carbon brush is ground and replaced by a method of manually grinding the carbon brush. The method for grinding the carbon brush by hand has the following defects: 1) the polished carbon powder can not be collected intensively in a dispersed manner, and the influence on the running environment of the machine set after maintenance is achieved. 2) The hand-grinding carbon brush has the defects that the grinding of the contact surface part of the hand-grinding carbon brush and the collecting ring is uneven and has no radian, and the like, which can cause some adverse factors, so that the abrasion of the carbon brush is increased, and the normal operation of a generator is influenced. 3) The manual grinding control is not good, so that no gap or too small gap exists between the carbon brush and the brush holder, and the carbon brush can be clamped in the brush holder due to thermal expansion. 4) After the replacement, the contact surface of the new carbon brush and the collector ring needs to have a certain radian, and the contact surface of the cambered surface of the carbon brush and the slip ring after polishing needs to reach about 75 percent. However, the manual polishing sometimes fails to meet the corresponding requirements, the contact area between the carbon brush and the collector ring is insufficient, the carbon brush and the slip ring cannot be guaranteed to be always in good contact, and adverse factors such as overheating of the carbon brush due to increase of electrical loss and burning due to increase of sparks can be caused, so that the abrasion of the carbon brush is increased, and the operation of the generator is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide the closed type carbon brush grinding tool which has high efficiency, high grinding precision and low labor intensity and ensures the running environment of a machine set after maintenance aiming at the defects.
The technical scheme of the utility model is as follows: the closed carbon brush grinding tool is characterized by comprising a dust collecting box, wherein a driving wheel, a first driven wheel, a second driven wheel and a third driven wheel which are in transmission connection through an abrasive belt are arranged in the dust collecting box; a carbon brush grinding brush holder obliquely arranged in the dust collecting box is arranged at the right upper part of the dust collecting box; the back side of the dust collecting box is provided with a crank for driving the whole device.
In the above scheme, the method further comprises:
the back side of the dust collecting box is also provided with a guide rod bolt and a knob of a locking mechanism.
The bottom of the dust collecting box is provided with four sucker type foot pads for fixing.
The locking mechanism consists of a guide rod bolt, a spring, a tension adjusting wheel for adjusting the tightness of the abrasive belt, a guide fixing block and a knob; the upper end of a guide rod bolt freely penetrates through the upper surface of the dust collection box, a spring is wound on the guide rod bolt, a tension adjusting wheel is screwed on the guide rod bolt, the lower end of the guide rod bolt is connected with a guide fixing block, a knob vertically connected with the guide fixing block is arranged on the guide fixing block, and a central shaft of a third driven wheel is connected with the guide fixing block.
The front side surface of the dust collection box is an observation window made of an organic glass plate.
The utility model has the advantages that: 1. the grinding wheel is adopted to move the abrasive cloth, two grinding ports are arranged simultaneously, the plane grinding module and the arc plane grinding module are arranged, the grinding is adaptive to the carbon brush structure, the grinding precision is high, the maintenance labor intensity can be reduced, and the working efficiency is improved. 2. The portable generator is small in size, convenient to carry and suitable for operation in narrow space in a generator pit.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of the internal structure of the present invention.
Fig. 2 is a schematic top view of fig. 1.
Fig. 3 is a schematic view of the a-direction locking mechanism of fig. 2.
Detailed Description
Referring to fig. 1-3, the part names are as follows: the carbon brush grinding machine comprises a cuboid dust collecting box 1, a carbon brush placing socket 2, a flat grinding port 3, a plane module 4, an arc plane grinding module 5, a crank 6, a knob 7, a sucker type pad foot 8, a driving wheel 9, a first driven wheel 10, a second driven wheel 11, a third driven wheel 12, a guide rod bolt 13, a brush holder 14, a spring 15, a tension adjusting wheel 16 and a guide fixing block 17.
Referring to fig. 1 and 2, the enclosed carbon brush grinding tool includes a dust collecting box 1, a driving wheel 9, a first driven wheel 10, a second driven wheel 11 and a third driven wheel 12 (all having the same diameter) are arranged inside the dust collecting box 1 and are connected through an abrasive belt transmission, and grooves are formed on the surfaces of the driving wheel and the driven wheel for fixing and abrasive belt transmission (equivalent to a belt in a belt pulley structure). A plane grinding module 4 is fixed between the driving wheel 9 and the first driven wheel 10, the plane grinding module 4 is used for fixing and supporting an abrasive belt thereon, and when the roller moves, the side surface of the carbon brush is subjected to plane grinding through the abrasive belt. The upper surface of the dust collecting box 1 corresponding to the plane grinding module 4 is provided with a plane grinding opening 3 (an exposed opening, see figure 2), an arc plane grinding module 5 is arranged between the first driven wheel 10 and the second driven wheel 11, the arc plane grinding module 5 is used for fixing and supporting an abrasive belt on the arc plane grinding module 5, and when the roller moves, the abrasive belt is driven to grind the contact surface of the carbon brush and the collecting ring. The center of the third driven wheel 12 is connected with a locking mechanism for adjusting the tightness of the abrasive belt, and the tightness of the abrasive belt is adjusted by the vertical movement of the third driven wheel 12. The carbon brush grinding brush holder 14 obliquely arranged in the dust collection box 1 is arranged at the right upper part of the dust collection box and used for placing a carbon brush and grinding the end of the carbon brush. The back side of the dust collecting box 1 is provided with a crank 6 for driving the whole device to drive the driving and driven wheels to rotate. The rear side of the dust collecting box 1 is also provided with a guide bolt 13 and a knob 7 of a locking mechanism. In fig. 1, the third driven pulley 12 is in a low position in a solid line, and the third driven pulley 12 is in a high position in a dotted line.
Referring to fig. 3, fig. 3 is a schematic view of the locking mechanism of fig. 2A exposed to the side of the dust box 1. The locking mechanism in the dust collecting box 1 consists of a guide rod bolt 13 (the upper end of which freely penetrates the upper surface of the dust collecting box 1), a spring 15, a tension adjusting wheel 16, a guide fixing block 17 and a knob 7 (which penetrates the outer surface of the side of the dust collecting box 1). The spring 15 is wound on the guide rod bolt 13, the tension adjusting wheel 16 is screwed on the guide rod bolt 13 and moves up and down along the guide rod bolt 13, the lower end of the guide rod bolt 13 is connected with the guide fixing block 17, the knob 7 vertically connected with the guide fixing block 17 is arranged on the guide fixing block 17, and the tension adjusting wheel 16 and the guide fixing block 17 are sequentially arranged below the spring 15. The knob 7, the guide rod bolt 13 and the third driven wheel 12 are connected through the guide fixing block 17, the center of the third driven wheel 12 is connected with the knob 7 through the guide fixing block 17, when the knob 7 is upwards, the guide rod bolt 13 upwards moves, the third driven wheel 12 is also upwards lifted, and the tension adjusting wheel 16 is shifted to loosen the abrasive belt, so that the abrasive belt on the wheel can be replaced. After the belt is replaced, the loosening knob 7 and the third driven wheel 12 automatically reset to fasten the abrasive belt. When the abrasive belt is too tight or too loose, the tightness of the abrasive belt can be adjusted by shifting the tension adjusting wheel 16. The tension adjusting wheel 16 adjusts the tightness of a spring 15 wound on the guide rod bolt 13, so that the height of the third driven wheel 12 is adjusted, and the tightness of the abrasive belt is further adjusted.
The tool shell is a cuboid dust collecting box 1 made of aluminum materials, which is not only an outer frame of the whole mechanism, but also a dust collecting box for collecting ground carbon powder. The front side of the dust collecting box 1 is an observation window made of organic glass plates and used for observing the running condition of the device and replacing abrasive belts used for grinding carbon brushes on the driving wheel and the driven wheel.
The left side and the right side of the dust collecting box 1 are detachable end covers fixed by screws, and the inner side of the end cover 3 is provided with a spring sheet for fixing a glass observation window.
An inclined brush holder 14 is arranged at the upper right part of the dust collection box 1, is a constant pressure spring brush holder commonly used by a hydraulic generator and is used for placing a carbon brush for grinding. A plane module 4 and an arc plane grinding module 5 are arranged above the dust collecting box 1 and are used for grinding the side face and the chamfer of the carbon brush.
Behind the tool is a guide bolt 13 and knob 7 that drive the crank 6 and locking mechanism of the entire device for adjusting the tightness of the belt and removing the belt. The bottom of the dust collecting box 1 is provided with four sucker type foot pads 8 for fixing.
Referring to fig. 1, a fixed plane grinding module 4 is disposed between the driving wheel 9 and the first driven wheel 10 to grind the side surface of the carbon brush, thereby adjusting the distance between the carbon brush and the brush holder. An arc-shaped plane grinding module 5 is arranged between the first driven wheel 10 and the second driven wheel 11, and the size is designed according to the diameter of a slip ring of the generator and the width of a carbon brush. The third driven wheel 12 is an expander, the center of which is connected to the locking mechanism.
Referring to fig. 1, 2, and 3, the enclosed carbon brush grinding tool specifically operates as follows: the carbon brush to be ground is placed on a constant-pressure spring brush holder 14, a crank 6 is rotated, the abrasive belt is supported by an arc-shaped plane grinding module 5 installed on a tangent line by utilizing the tangent line distance of a first driven wheel 10 and a second driven wheel 11 (installed at an angle of alpha =35 degrees) and the arc surface of the abrasive belt on the driven wheel, so that the abrasive belt moves according to the arc of the arc-shaped plane grinding module 5, and the arc of the contact surface of the carbon brush is ground to be consistent with the arc of the slip ring. If a small gap is required between the carbon brush and the brush holder, the carbon brush can be placed on the plane grinding module 4 above the tool for grinding.
The effect shows that after the carbon brush is ground and replaced by the closed type carbon brush grinding tool, a better effect can be achieved, the radian of the contact surface of the carbon brush, the distance between the contact surface of the carbon brush and a brush holder and other aspects can meet the requirements of corresponding regulation standards, and meanwhile, the carbon brush body is not damaged.
The closed carbon brush grinding tool realizes standard and quick grinding of the carbon brush. In the practical use, the tool is small in size, convenient to carry and suitable for operation in narrow space of the unit, and the closed design of the tool is convenient for storing ground carbon powder and protects the internal operation environment of the unit. The tool is easy to machine, low in cost and simple to operate, can be converted into electric operation, and can effectively reduce labor intensity and improve working efficiency.
The foregoing description is only exemplary of the utility model and is not intended to limit the spirit of the utility model.
Claims (5)
1. The closed carbon brush grinding tool is characterized by comprising a dust collecting box (1), wherein a driving wheel (9), a first driven wheel (10), a second driven wheel (11) and a third driven wheel (12) which are in transmission connection through an abrasive belt are arranged in the dust collecting box (1), a plane grinding module (4) is fixed between the driving wheel (9) and the first driven wheel (10), a plane grinding opening (3) is formed in the upper surface of the dust collecting box (1) corresponding to the plane grinding module (4), an arc-shaped plane grinding module (5) is arranged between the first driven wheel (10) and the second driven wheel (11), and the center of the third driven wheel (12) is connected with a locking mechanism for adjusting the tightness of the abrasive belt; a carbon brush grinding brush holder (14) obliquely arranged in the dust collection box (1) is arranged at the right upper part of the dust collection box; the rear side surface of the dust collecting box (1) is provided with a crank (6) for driving the whole device.
2. A closed type carbon brush grinding tool according to claim 1, wherein the dust box (1) further has a guide bolt (13) and a knob (7) of a locking mechanism at a rear side thereof.
3. A closed type carbon brush grinding tool according to claim 1 or 2, characterized in that the dust box (1) has four suction cup type pads (8) at the bottom for fixing.
4. A closed type carbon brush grinding tool according to claim 3, wherein the locking mechanism is composed of a guide rod bolt (13), a spring (15), a tension adjusting wheel (16) for adjusting the tightness of the abrasive belt, a guide fixing block (17), and a knob (7); the upper end of a guide rod bolt (13) freely penetrates through the upper surface of the dust collection box (1), a spring (15) is wound on the guide rod bolt (13), a tension adjusting wheel (16) is screwed on the guide rod bolt (13), the lower end of the guide rod bolt (13) is connected with a guide fixing block (17), a knob (7) vertically connected with the guide fixing block (17) is arranged on the guide fixing block (17), and the central shaft of a third driven wheel (12) is connected with the guide fixing block (17).
5. The closed type carbon brush grinding tool according to claim 4, wherein the front side of the dust box (1) is an observation window made of a plexiglass plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122400893.7U CN215659665U (en) | 2021-10-02 | 2021-10-02 | Closed carbon brush grinding tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122400893.7U CN215659665U (en) | 2021-10-02 | 2021-10-02 | Closed carbon brush grinding tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215659665U true CN215659665U (en) | 2022-01-28 |
Family
ID=79967528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122400893.7U Active CN215659665U (en) | 2021-10-02 | 2021-10-02 | Closed carbon brush grinding tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215659665U (en) |
-
2021
- 2021-10-02 CN CN202122400893.7U patent/CN215659665U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210909286U (en) | Terminal surface grinding device of box transformer cabinet curb plate | |
| CN112059738A (en) | Fine treatment method for sealing packing graphite ring of compressor | |
| CN209902812U (en) | Outer cylindrical surface grinding device of motor stator casing | |
| CN111546196A (en) | Multifunctional sand table belt sander | |
| CN210160858U (en) | Grinding equipment for spring processing | |
| CN215659665U (en) | Closed carbon brush grinding tool | |
| CN213498344U (en) | Electric grinding device for carbon brush of generator of nuclear power plant | |
| CN113829228A (en) | Closed carbon brush grinding tool | |
| CN109333300A (en) | It is a kind of for removing the device of steel tube surface iron rust | |
| CN112059841A (en) | Fine treatment equipment for sealing packing graphite ring of compressor | |
| CN210815507U (en) | Novel multifunctional grinding machine | |
| CN109015333A (en) | A kind of generator carbon brush cambered surface grinding device | |
| CN208826314U (en) | A kind of generator carbon brush cambered surface grinding device | |
| CN212497170U (en) | Portable carbon brush grinding device | |
| CN211053406U (en) | Motorcycle cylinder body inner chamber smooth finish processing apparatus | |
| CN211029357U (en) | Lens chamfering equipment | |
| CN211565471U (en) | Grinding device is used in processing of LED lamp stand | |
| CN208019956U (en) | Automatically grinding device with location structure | |
| CN220051319U (en) | Round wood stick polishing device | |
| CN220051348U (en) | Automatic grinder of hydro-generator carbon brush | |
| CN219337099U (en) | Novel grinding machine for wall construction | |
| CN220279254U (en) | Novel polishing machine | |
| CN210189335U (en) | Automatic integrated clamping device for glass copying machine hand | |
| CN217317414U (en) | High-efficient grinding device of hydraulic generator carbon brush | |
| CN211193204U (en) | Handheld wall grinding machine without variable-speed transmission mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |