CN219403718U - Automatic grinding device for large-sized hydraulic generator rotor brush - Google Patents
Automatic grinding device for large-sized hydraulic generator rotor brush Download PDFInfo
- Publication number
- CN219403718U CN219403718U CN202320358852.2U CN202320358852U CN219403718U CN 219403718 U CN219403718 U CN 219403718U CN 202320358852 U CN202320358852 U CN 202320358852U CN 219403718 U CN219403718 U CN 219403718U
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- table top
- grinding
- bin
- frame
- carbon brush
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The utility model provides an automatic grinding device for a rotor brush of a large-sized hydraulic generator, which comprises a frame, an in-out table top, a lifting table top, a carbon brush clamping bin, a grinding piece, a driving wheel, a steering wheel, a roller and a lifting motor. The back of the frame is provided with a vertical placing bin, and a front panel of the placing bin is provided with a grinding frame, a driving wheel, a steering wheel, a roller and an abrasive belt; the grinding part is arranged below the grinding frame, and the grinding surface of the grinding part is in arc-shaped convex arrangement; a groove is arranged on the operating board at the front end of the frame and used for placing the lifting table top, and a sliding rail is arranged on the lifting table top and is movably connected with the in-out table top; a carbon brush clamping bin is arranged on the inlet and outlet table top and is positioned at the lower end of the grinding piece. The motor drives the abrasive belt to grind the electric brushes, so that the automation degree is high, the labor intensity is reduced, the grinding speed can be well controlled, a plurality of electric brushes can be ground, and the grinding efficiency of the electric brushes is effectively improved.
Description
Technical Field
The utility model belongs to the technical field of hydraulic engineering, and particularly relates to an automatic grinding device for a rotor brush of a large-sized hydraulic generator.
Background
The rotor collecting ring and the electric brush of the hydraulic generator are channels of exciting current and are one of the most important parts of the generator, at present, when the maintenance of the rotor collecting ring of the generator is carried out, the short electric brush is detected to be required to be replaced, after a maintainer replaces the new electric brush, a great deal of spark-over faults of the electric brush occur when the unit resumes operation, an infrared imager is used for measuring the temperature of the contact surface of the electric brush to be 144 ℃ (rule prescribes that the operation temperature of the collecting ring cannot be more than 90 ℃), the surface of the collecting ring is an arc surface after the shutdown is detected, the new electric brush is a flat surface, the maintainer directly replaces the surface of the new electric brush without radian polishing, the surface of the electric brush and the surface of the collecting ring is in point contact, the contact area is smaller than one fourth of the whole electric brush, the contact resistance in operation of the rotor collecting ring cannot meet the current flowing requirement of the rotor (the current of 130A is required for each electric brush), thereby causing the electric brush to spark and serious heat, and the electric brush is not timely eliminated to overheat, so that the brush is burnt and the braid is blown, and the accident of the unit is caused.
Disclosure of Invention
Aiming at the hidden trouble that the brush holder is burnt and the brush braid is burnt and the accident of a unit is stopped when serious, the utility model provides the automatic grinding device for the rotor brush of the large-scale hydraulic generator, which is convenient for grinding the brush into an arc surface to enable the brush to be in better contact with the collecting ring.
The utility model is realized by the following technical scheme:
an automatic grinding device for a large-sized hydraulic generator rotor brush comprises a frame, an in-out table top, a lifting table top, a carbon brush clamping bin, a grinding piece, a driving wheel, a steering wheel, a roller and a lifting motor;
the back of the frame is provided with a vertical placing bin, and a front panel of the placing bin is provided with a grinding frame, a driving wheel, a steering wheel and a roller; the driving wheel and the steering wheel are arranged on two sides of the lower part of the front panel of the placing bin, the grinding frame is fixed in the middle of the lower end of the front panel of the placing bin and is positioned between the driving wheel and the steering wheel, and the upper part of the grinding frame is provided with a roller; a driving motor is arranged in the placing bin and connected with the driving wheel;
the grinding part is arranged below the grinding frame, and the grinding surface of the grinding part is in arc-shaped convex arrangement;
abrasive belts are arranged among the grinding piece, the driving wheel, the steering wheel and the idler wheels;
the front end operation plate of the frame is provided with a groove for placing the lifting table top, and the lifting table top is provided with a sliding rail which is movably connected with the in-out table top; a carbon brush clamping bin is arranged on the inlet and outlet table top and is positioned at the lower end of the grinding piece;
the lifting table top is driven by a lifting motor arranged at the bottom of the frame;
the driving motor and the lifting motor are respectively and electrically connected through a control electric box, and a rotating wheel starting key, an emergency switch key, an equipment stopping key, a speed adjusting key, a position lifting key and an equipment starting key are arranged on the control electric box.
The working principle of the utility model is as follows:
before equipment starts, the in-out table top is pulled out, the carbon brush to be polished is placed in the carbon brush clamping bin, then the in-out table top is pushed in to enable the electric brush to be polished to be located below the grinding piece, then the position of the lifting table top is adjusted through the position lifting key on the control electric box to enable the electric brush to be polished to be in contact with the grinding piece, then the equipment starting key on the control electric box is pressed down, the driving motor drives the driving wheel to rotate and drives the abrasive belt to rotate, the abrasive belt polishes the electric brush on the arc surface of the grinding piece, the electric brush surface is polished to form an inwards concave arc surface, the equipment stopping key on the control electric box is pressed down after polishing is completed, the in-out table top is pulled out, and the polished electric brush is taken out from the carbon brush clamping bin, and polishing of the electric brush is completed.
As a further improvement of the utility model, the bottom of the lifting table top is connected with a lifting motor through a nut screw rod; the lifting motor is fixedly connected with a limit bin arranged at the bottom of the frame; the frame and the limit bin are provided with through holes for the nut screw rod to pass through. The motor adopts the motor with parameters of 220V, 25W and 50Hz, and the lifting distance of 50mm is realized through the connection of the nut screw rod, so that the position of the carbon brush can be accurately adjusted, and the grinding efficiency is improved.
As a further improvement of the utility model, the bottom of the in-out table top is provided with a semicircular claw matched with the sliding rail, and the in-out travel of the in-out table top is 100-350mm. The access table top is connected with the sliding rail in a meshed mode, movement of an access stroke of 100-350mm can be achieved, and the table top can be conveniently replaced while the front and back movement of the table top is achieved.
As a further improvement of the utility model, the carbon brush clamping bin is internally provided with supporting ribs. The support ribs can support the bottom of the carbon brush, and the wire at the bottom of the carbon brush is prevented from being damaged due to extrusion.
As a further improvement of the utility model, the open end of the carbon brush clamping bin is hinged with a bin door, and the bin door is fixed by a buckle; the buckle is rotationally connected to one side of the carbon brush clamping bin. The carbon brush storehouse design specification is preferably 115 (length) ×35 (width) ×55mm (height), and the width corresponds the width of present conventional brush, and three brush can be placed simultaneously to length and grind, when placing a plurality of carbon brushes simultaneously, utilizes bin gate and buckle to fix and avoids the carbon brush to drop at the in-process of polishing.
As a further improvement of the utility model, the bottom of the roller is provided with an adjusting rod; the lower part of the adjusting rod is sleeved with a supporting rod, and a spring is arranged on the rod body of the supporting rod. The adjusting rod can move up and down to adjust the main shaft position of the roller, so that the abrasive belt can be conveniently replaced, and the adjusting rod automatically rises to pull the abrasive belt to a tight state under the action of the spring, so that the abrasive belt is fixed.
As a further improvement of the utility model, the upper part of the frame is provided with a dust cover. Dust can be avoided flying up in the grinding process by the dust cover.
As a further improvement of the utility model, the specification of the abrasive belt is more than 800 meshes.
Compared with the prior art, the utility model has the following beneficial effects:
1. the automatic grinding device provided by the utility model has the advantages that the motor drives the abrasive belt to grind the electric brushes, the automation degree is high, the labor intensity is reduced, the grinding speed can be well controlled, a plurality of electric brushes can be ground, and the grinding efficiency of the electric brushes is effectively improved.
2. The abrasive belt mesh number can be customized according to different grinding requirements, and the abrasive belt is convenient to replace through the triangular fixing arrangement of the idler wheels, the driving wheels and the steering wheels, so that the abrasive belt is simpler and more convenient to replace after being polished to be smooth.
Drawings
FIG. 1 is a schematic diagram of the structure of the device of the present utility model.
Fig. 2 is a cross-sectional view of the connection structure of the lifting motor, the lifting table top and the in-out table top of the device of the utility model.
Reference numerals: the grinding machine comprises a 1-frame, a 2-placing bin, a 3-entering and exiting table top, a 4-lifting table top, a 5-sliding rail, a 6-carbon brush clamping bin, a 7-grinding piece, an 8-grinding frame, a 9-driving wheel, a 10-steering wheel, a 11-roller, a 12-adjusting rod, a 13-bin gate, a 14-buckle, a 15-control electric box, a 16-lifting motor 17-limiting bin, a 18-nut screw rod, a 19-semicircular claw, a 20-supporting rib, a 21-supporting rod, a 22-spring, a 23-dust cover and a 24-abrasive belt.
Description of the embodiments
The utility model is further described below with reference to the accompanying drawings.
Example 1
The automatic grinding device for the large-scale hydraulic generator rotor brushes shown in fig. 1 comprises a frame 1, an in-out table top 3, a lifting table top 4, a carbon brush clamping bin 6, grinding pieces 7, a driving wheel 9, a steering wheel 10, a roller 11 and a lifting motor 16;
the back of the frame 1 is provided with a vertical placing bin 2, and the front panel of the placing bin 2 is provided with a grinding frame 8, a driving wheel 9, a steering wheel 10 and a roller 11; the driving wheel 9 and the steering wheel 10 are arranged on two sides of the lower part of the front panel of the placing bin 2, the grinding frame 8 is fixed in the middle of the lower end of the front panel of the placing bin 2 and is positioned between the driving wheel 9 and the steering wheel 10, and the upper part of the grinding frame 8 is provided with a roller 11; a driving motor is arranged in the placement bin 2 and is connected with a driving wheel 9; the bottom of the roller 11 is provided with an adjusting rod 12; the lower part of the adjusting rod 12 is sleeved with a supporting rod 21, and a spring 22 is arranged on the rod body of the supporting rod.
The grinding piece 7 is arranged below the grinding frame 8, and the grinding surface of the grinding piece 7 is arranged in an arc-shaped bulge with the diameter of 1580 mm;
an 800-mesh abrasive belt 24 is arranged among the grinding piece 7, the driving wheel 9, the steering wheel 10 and the idler wheel 11;
a groove is formed in the front end operation plate of the frame 1 and used for placing the lifting table top 4, and a sliding rail 5 is arranged on the lifting table top 4 and is movably connected with the in-out table top 3; a carbon brush clamping bin 6 is arranged on the in-out table top 3, and the carbon brush clamping bin 6 is positioned at the lower end of the grinding piece 7;
the bottom of the in-out table top 3 is provided with a semicircular claw 19 matched with the sliding rail 5, and the in-out travel of the in-out table top 3 is 350mm.
The lifting table top 4 is driven by a lifting motor 16 arranged at the bottom of the frame 1; the bottom of the lifting table top 4 is connected with a lifting motor 16 through a nut screw 18; the lifting motor 16 is fixedly connected with a limit bin 17 arranged at the bottom of the frame 1; the frame 1 and the limit bin 17 are provided with through holes for the nut screw 18 to pass through, as shown in fig. 2.
The driving motor and the lifting motor 16 are respectively and electrically connected and controlled through a control electric box 15.
The working principle of this embodiment is as follows:
before equipment starts, the in-out table top 3 is pulled out, carbon brushes to be polished are placed in the carbon brush clamping bin 6, then the in-out table top 3 is pushed in to enable the brushes to be polished to be located below the grinding piece 7, then the positions of the in-out table top 4 are adjusted through the position lifting key on the control electric box 15 to enable the brushes to be polished to be in contact with the grinding piece 7, then the equipment starting key on the control electric box 15 is pressed down, the driving motor drives the driving wheel 9 to rotate and drives the abrasive belt 24 to rotate, the abrasive belt 24 polishes the brushes on the arc-shaped surface of the grinding piece 7, the surfaces of the brushes are polished to form inwards concave arc-shaped surfaces, after polishing is finished, the equipment stopping key on the control electric box 15 is pressed down, the in-out table top 3 is pulled out, the polished brushes are taken out from the carbon brush clamping bin 6, and polishing of the brushes is completed.
Example 2
This example is a further improvement over example 1, in particular:
the inlet and outlet travel of the inlet and outlet table top 3 is set to be 100mm.
The carbon brush clamping bin 6 is internally provided with a supporting rib 20. The open end of the carbon brush clamping bin 6 is hinged with a bin door 13, and the bin door 13 is fixed through a buckle 14; the buckle 14 is rotatably connected to one side of the carbon brush clamping bin 6.
The working principle of this embodiment is the same as that of embodiment 1, and the support ribs 20 can support the bottom of the carbon brush, so as to avoid the damage caused by extrusion of the wires at the bottom of the carbon brush. The carbon brush storehouse 6 design specification is preferably 115 (length) ×35 (width) ×55mm (height), and the width corresponds the width of present conventional brush, and three brush can be placed simultaneously to length and grind, when placing a plurality of carbon brushes simultaneously, utilizes bin gate 13 and buckle 14 to fix and avoids the carbon brush to drop at the in-process of polishing.
Example 3
This example is a further improvement over example 2, and is specifically as follows:
the bottom of the roller 11 is provided with an adjusting rod 12; the lower part of the adjusting rod 12 is sleeved with a supporting rod 21, and a spring 22 is arranged on the rod body of the supporting rod.
The working principle of this embodiment is the same as that of embodiment 2, and the adjusting rod 12 can move up and down to adjust the main shaft position of the roller 11, so that the abrasive belt 24 can be replaced conveniently, and the adjusting rod 12 is automatically lifted under the action of the spring 22 to pull the abrasive belt 24 to a tight state, so that the abrasive belt is fixed.
Example 4
This example is a further improvement over example 3, and is specifically as follows:
the upper part of the frame 1 is provided with a dust cover 23.
The working principle of this embodiment is the same as that of embodiment 3, and dust can be prevented from flying during the grinding process by the dust cover 23.
The above embodiments are only exemplary embodiments of the present utility model and are not intended to limit the present utility model, the scope of which is defined by the claims. Various modifications and equivalent arrangements of parts may be made to the present utility model within the spirit and scope of the utility model, and such modifications and equivalents should be considered to fall within the scope of the utility model.
Claims (8)
1. The utility model provides a large-scale hydraulic generator rotor brush automatic grinding device which characterized in that: comprises a frame (1), an in-out table top (3), a lifting table top (4), a carbon brush clamping bin (6), grinding pieces (7), a driving wheel (9), a steering wheel (10), a roller (11) and a lifting motor (16);
the back of the frame (1) is provided with a vertical placing bin (2), and a front panel of the placing bin (2) is provided with a grinding frame (8), a driving wheel (9), a steering wheel (10) and a roller (11); the driving wheel (9) and the steering wheel (10) are arranged on two sides of the lower part of the front panel of the placing bin (2), the grinding frame (8) is fixed in the middle of the lower end of the front panel of the placing bin (2) and is positioned between the driving wheel (9) and the steering wheel (10), and the upper part of the grinding frame (8) is provided with a roller (11); a driving motor is arranged in the placement bin (2) and is connected with a driving wheel (9);
the grinding piece (7) is arranged below the grinding frame (8), and the grinding surface of the grinding piece (7) is in arc-shaped protruding arrangement;
abrasive belt (24) is arranged among the grinding piece (7), the driving wheel (9), the steering wheel (10) and the idler wheel (11);
a groove is formed in the front end operation plate of the frame (1) and used for placing the lifting table top (4), and a sliding rail (5) is arranged on the lifting table top (4) and is movably connected with the in-out table top (3); a carbon brush clamping bin (6) is arranged on the in-out table top (3), and the carbon brush clamping bin (6) is positioned at the lower end of the grinding piece (7);
the lifting table top (4) is driven by a lifting motor (16) arranged at the bottom of the frame (1);
the driving motor and the lifting motor (16) are respectively and electrically connected through a control electric box (15) for control.
2. The automatic grinding device for large-scale hydro-generator rotor brushes of claim 1, wherein: the bottom of the lifting table top (4) is connected with a lifting motor (16) through a nut screw rod (18); the lifting motor (16) is fixedly connected with a limit bin (17) arranged at the bottom of the frame (1); the frame (1) and the limit bin (17) are provided with through holes for the nut screw rods (18) to pass through.
3. The automatic grinding device for large-scale hydro-generator rotor brushes of claim 1, wherein: the bottom of the access table top (3) is provided with a semicircular claw (19) which is matched with the sliding rail (5), and the access travel of the access table top (3) is 100-350mm.
4. The automatic grinding device for large-scale hydro-generator rotor brushes of claim 1, wherein: the carbon brush clamping bin (6) is internally provided with supporting ribs (20).
5. The automatic grinding device for large-scale hydro-generator rotor brushes of claim 1, wherein: the open end of the carbon brush clamping bin (6) is hinged with a bin door (13), and the bin door (13) is fixed through a buckle (14); the buckle (14) is rotationally connected to one side of the carbon brush clamping bin (6).
6. The automatic grinding device for large-scale hydro-generator rotor brushes of claim 1, wherein: an adjusting rod (12) is arranged at the bottom of the roller (11); the lower part of the adjusting rod (12) is sleeved with a supporting rod (21), and a spring (22) is arranged on the rod body of the supporting rod.
7. The automatic grinding device for large-scale hydro-generator rotor brushes of claim 1, wherein: the upper part of the frame (1) is provided with a dust cover (23).
8. The automatic grinding device for large-scale hydro-generator rotor brushes of claim 1, wherein: the specification of the abrasive belt (24) is more than 800 meshes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320358852.2U CN219403718U (en) | 2023-03-02 | 2023-03-02 | Automatic grinding device for large-sized hydraulic generator rotor brush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320358852.2U CN219403718U (en) | 2023-03-02 | 2023-03-02 | Automatic grinding device for large-sized hydraulic generator rotor brush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219403718U true CN219403718U (en) | 2023-07-25 |
Family
ID=87235890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320358852.2U Active CN219403718U (en) | 2023-03-02 | 2023-03-02 | Automatic grinding device for large-sized hydraulic generator rotor brush |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219403718U (en) |
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2023
- 2023-03-02 CN CN202320358852.2U patent/CN219403718U/en active Active
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