CN213730966U - Automatic grinding tool for carbon brush cambered surface - Google Patents

Abstract

The utility model relates to a tool for processing the cambered surface of the contact surface of a motor carbon brush, in particular to an automatic grinding tool for the cambered surface of a carbon brush, which comprises a bracket, a positioning clamping mechanism and a grinding mechanism; the grinding mechanism comprises two fan-shaped supporting plates, arc surfaces at the tops of the two fan-shaped supporting plates are connected with a grinding wheel plate, the fan-shaped supporting plates are arranged on two sides of the grinding wheel plate, the lower ends of the fan-shaped supporting plates are fixedly connected with rotating shafts, two ends of each rotating shaft are connected between the two supporting plates in a rotating mode, a connecting rod is arranged above each rotating shaft, the connecting rod is arranged between the fan-shaped supporting plates, the connecting rod is fixedly connected to the axis of the fan-shaped supporting plates in a shaft line position, a fixing base is arranged on the inner side of each supporting frame, a grinding motor is arranged on the fixing base, one end of a rotating arm of the output end of the grinding motor is fixedly connected with one end of the rotating arm, and the other end of the rotating arm is connected to the connecting rod in a rotating mode.

Description

Automatic grinding tool for carbon brush cambered surface

Technical Field

The utility model relates to an instrument is used in cambered surface processing of motor carbon brush contact surface, concretely relates to automatic grinding tool of carbon brush cambered surface.

Background

During the maintenance work of extra-high voltage converter station, when the phase modifier carbon brush was changed, there was the inconsistent problem of new carbon brush tip radian and fortune carbon brush tip, can appear striking sparks and the problem of generating heat after new carbon brush installs additional, consequently all can carry out certain processing to new carbon brush tip cambered surface when changing the carbon brush.

At present, the forming mode of the arc surface of the carbon brush mainly comprises two modes: the utility model provides a comparatively traditional mode is the manpower and grinds, and this kind of mode relies on workman's experience too much, and the condition that often appears the carbon brush contact surface and grinds partially needs to polish many times, compare and correct and just can make the contact surface qualified, and the biggest shortcoming is exactly consuming time and wasting force, and is inefficient, does not adapt to the requirement of forming high efficiency, accuracy to the carbon brush cambered surface at present stage.

The other way is to rely on a carbon brush grinding mechanism, but most grinding mechanisms can only grind a single carbon brush or a single carbon brush group at a time, the grinding precision is difficult to control, and a large amount of carbon powder is generated during grinding, so that the subsequent grinding precision is influenced, and the health of processing workers is greatly damaged.

SUMMERY OF THE UTILITY MODEL

For overcoming the problem that exists among the above-mentioned prior art, the utility model aims at providing an automatic grinding tool of carbon brush cambered surface improves current carbon brush and grinds technology, promotes work efficiency, guarantees to grind the precision, reduces the dust harm, realizes full-automatic grinding, has solved the problem that exists among the prior art.

The utility model adopts the technical proposal that:

an automatic grinding tool for a carbon brush cambered surface comprises a support, a positioning clamping mechanism and a grinding mechanism; the support comprises a support table, support plates are vertically arranged on the support table, the two supports are symmetrically arranged, and the grinding mechanism is arranged between the two supports.

Further grinding mechanism include fan-shaped extension board two, two fan-shaped extension board top arc surfaces are connected with the emery wheel board, fan-shaped extension board sets up in emery wheel board both sides, fan-shaped extension board lower extreme fixedly connected with pivot, the pivot both ends are rotated and are connected between two backup pads, the pivot top is provided with the connecting rod, the connecting rod sets up between fan-shaped extension board, connecting rod fixed connection is on fan-shaped extension board axis position, the support inboard is provided with the fixing base, be provided with grinding motor on the fixing base, grinding motor output fixed connection rocking arm one end, the rocking arm other end is rotated and is connected on the connecting rod.

Further location clamping machine construct and set up in grinding mechanism top, including the brush holder, the brush holder lower extreme rotates through the locating pin axle and connects between the backup pad, be equipped with the arc spout in the backup pad, the brush holder upper end is equipped with the slide bar, slide bar sliding connection is in the arc spout, be equipped with the mounting groove on the brush holder, the mounting inslot is connected with the handle, be equipped with carbon brush mould on the handle, be equipped with a plurality of carbon brush grooves on the carbon brush mould, carbon brush groove top is equipped with the joint hole, the carbon brush is installed in the carbon brush groove, the carbon brush top is through spring card fender joint downthehole in the joint, terminal surface and emery wheel board upper surface laminating under the carbon brush.

Further supporting bench one side be equipped with the transmission case, be equipped with turbine and worm in the transmission case, be connected with the motor on the turbine, the vertical setting of worm, the worm outer joint has the push rod, the push rod setting is outside at the transmission case, the push rod top is rotated and is connected the one end at the connecting rod, the connecting rod other end is connected on the slide bar.

Further fan-shaped extension board one side be equipped with the arc backup pad, the arc backup pad sets up at fan-shaped extension board lower extreme, the arc backup pad setting is between fan-shaped extension board and backup pad, the arc backup pad is concentric arc face with emery wheel board top surface, evenly is provided with three laser range finder in the arc backup pad, the first carbon brush tank bottom of laser range finder top towards carbon brush mould one side.

Furthermore, two positioning and clamping mechanisms are symmetrically arranged.

The dust removal device is characterized by further comprising a dust removal system, wherein the dust removal system comprises two dust removal supports, two dust suction nozzles, a dust collecting pipe and a dust collector, the dust removal supports are fixed between the supporting plates, the dust suction nozzles are fixed on the dust removal supports and are arranged on two sides of the positioning and clamping mechanism, the dust suction nozzles are arranged above the grinding wheel plate, the dust collector is arranged on the lower portion of the supporting plate, and the dust suction nozzles and the dust collector are connected through the dust collecting pipe.

Further, the mounting groove is a dovetail groove with a large upper part and a small lower part, and the handle is inserted in the mounting groove.

Further be provided with the observation hole in the backup pad, the observation hole sets up in carbon brush and emery wheel board contact position.

Further still include the electric cabinet, be equipped with PLC controller, motor driver and power in the electric cabinet, power and PLC controller electric connection, motor driver, laser range finder and dust catcher are connected to the PLC controller, and motor driver connects grinding motor and motor.

The utility model has the advantages that:

1. by the full-automatic grinding function of the carbon brush, the working efficiency is effectively improved;

2. the radian of the arc surface of the standard carbon brush is detected by using the laser range finder to replace manual observation and positioning, so that the processing is more accurate;

3. the grinding work of a plurality of carbon brushes can be completed simultaneously, and the working efficiency is effectively improved;

4. dust generated in the grinding process can be cleaned in time, the automation degree of the carbon brush grinding work is improved, the grinding effect is improved, and the operation environment is improved;

5. the grinding wheel plate swings left and right to reciprocate, so that the surface finish of the grinding end surface is more uniform;

6. compact structure, the whole size is less, portable and settle and use.

Drawings

FIG. 1 is a schematic view of the side-removed bracket of the present invention;

FIG. 2 is a schematic structural view of the positioning and clamping mechanism of the present invention;

FIG. 3 is a schematic view of a partial front view structure of the mounting groove of the present invention;

FIG. 4 is a schematic view of a partial top view of the mounting groove of the present invention;

FIG. 5 is a schematic view of the grinding mechanism of the present invention;

FIG. 6 is a schematic view of the dust removing system of the present invention;

fig. 7 is a structural diagram of the electric cabinet control principle of the utility model.

In the figure: 1. the device comprises a support, 101, a support table, 102, a support plate, 103, a sliding groove, 104, an observation hole, 2, a positioning clamping mechanism, 201, a brush holder, 202, a positioning pin shaft, 203, a sliding rod, 204, a mounting groove, 205, a handle, 206, a carbon brush mold, 207, a carbon brush groove, 208, a clamping hole, 209, a transmission case, 210, a motor, 211, a push rod, 212, a connecting rod, 3, a grinding mechanism, 301, a fan-shaped support plate, 302, a grinding wheel plate, 303, a rotating shaft, 304, a connecting rod, 305, a fixed seat, 306, a grinding motor, 307, a rotating arm, 308, a rocker arm, 309 arc-shaped support plate, 310, a laser range finder, 4, a dust removal system, 401, a dust removal support, 402, a dust suction nozzle, 403, a dust collection pipe, 404, a dust collector, 5, an electric cabinet, 501, a PLC controller, 502, a motor driver, 503 and a power supply.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments:

the utility model provides an automatic grinding tool of carbon brush cambered surface which characterized in that: the grinding device comprises a bracket 1, a positioning clamping mechanism 2 and a grinding mechanism 3;

the grinding device comprises a support 1, a grinding mechanism 3, a grinding mechanism and a grinding mechanism, wherein the support 1 comprises a support table 101, support plates 102 are vertically arranged on the support table 101, the two supports 1 are symmetrically arranged, and the grinding mechanism 3 is arranged between the two supports 1; the grinding mechanism 3 comprises two fan-shaped support plates 301, the top arc surfaces of the two fan-shaped support plates 301 are connected with grinding wheel plates 302, the fan-shaped support plates 301 are arranged on two sides of the grinding wheel plates 302, the lower ends of the fan-shaped support plates 301 are fixedly connected with rotating shafts 303, two ends of the rotating shafts 303 are rotatably connected between the two support plates 102, connecting rods 304 are arranged above the rotating shafts 303 and arranged between the fan-shaped support plates 301, the connecting rods 304 are fixedly connected to the axial line positions of the fan-shaped support plates 301, a fixed seat 305 is arranged on the inner side of the support 1, a grinding motor 306 is arranged on the fixed seat 305, the output end of the grinding motor 306 is fixedly connected with one end of a rotating arm 307, the other end of the rotating arm 307 is rotatably connected with one end of a rotating arm 308, and the other end of the rotating arm 308 is rotatably connected to the connecting rods 304; the positioning and clamping mechanism 2 is arranged above the grinding mechanism 3 and comprises a brush holder 201, the lower end of the brush holder 201 is rotatably connected between support plates 102 through a positioning pin shaft 202, an arc-shaped chute 103 is formed in each support plate 102, a sliding rod 203 is arranged at the upper end of the brush holder 201, the sliding rod 203 is slidably connected in the arc-shaped chute 103, a mounting groove 204 is formed in the brush holder 201, a handle 205 is connected in the mounting groove 204, a carbon brush mold 206 is arranged on the handle 205, a plurality of carbon brush grooves 207 are formed in the carbon brush mold 206, a clamping hole 208 is formed in the top of each carbon brush groove 207, a carbon brush is arranged in each carbon brush groove 207, the top of the carbon brush is clamped in the clamping hole 208 through a spring, and the lower end face of the carbon brush is attached to the upper surface of a grinding wheel plate 302.

The support 1 forms the utility model discloses holistic structural support, grind the rotation of motor 306 and drive rocking arm 307 and do the circular motion in grinding mechanism 3, and then rocking arm 307 drives rocking arm 308 motion, because the rocking arm 308 other end is connected on connecting rod 304, consequently, form the crank link structure, and then make emery wheel board 302 form the purpose of left and right reciprocating rocking motion, can grind the carbon brush bottom surface arc surface when contacting with the carbon brush, and left and right reciprocating grinding can promote the surface finish quality of arc surface, avoid all the time in one direction grinding and lead to the uneven phenomenon of surface grinding to take place, can make the utility model discloses overall structure is compacter simultaneously, practices thrift the space, portable and settle and use; the positioning and clamping mechanism 2 is arranged above the grinding mechanism, the lower end of a brush holder 201 in the positioning and clamping mechanism 2 is connected by a positioning pin shaft 202 to form a brush holder 201 which rotates by taking the positioning pin shaft 202 as a rotating shaft, and simultaneously, the function that the brush holder can swing left and right is formed by utilizing the mutual matching action of a sliding rod 203 and an arc-shaped sliding groove 103, so that the adjusting action of the contact angle of the arc surface of the carbon brush and a grinding wheel plate 302 is realized, the grinding precision and the grinding effect of the arc surface of the carbon brush can be better ensured, the carbon brush is fixed in a carbon brush groove 207 by utilizing a spring block for fixing when the carbon brush is originally assembled, namely, the carbon brush is fixed and is expected to form downward pressure, the carbon brush is ensured to be always tightly attached to the grinding wheel plate 302, the contact force of the carbon brush and a sliding ring under the use state is simulated by utilizing the force of the spring block in the use process, so that the grinding effect is closer to the wear effect under the use state, and the grinding effect is more in line with the actual use requirement, during the use, fix the carbon brush in carbon brush groove 207, adjust and fix brush holder 201's position with hand operation handle 205, then start grinding mechanism 3 and grind the work can, set up a plurality of carbon brush grooves 207, can carry out a plurality of carbon brush function ground simultaneously, further promote work efficiency.

Further support table 101 one side be equipped with transmission case 209, be equipped with turbine and worm in the transmission case 209, be connected with motor 210 on the turbine, the worm is vertical to be set up, the worm external connection has push rod 211, push rod 211 sets up outside transmission case 209, the one end at connecting rod 212 is connected in the rotation of push rod 211 top, the connecting rod 212 other end is connected on slide bar 203, provide power for the worm gear through motor 210, and then the worm provides power for push rod 211, because the push rod 211 top is connected with connecting rod 212, consequently, the rotation to push rod 211 forms the restriction, under the worm pivoted condition, push rod 211 can form the flexible function from top to bottom, further can drive brush holder 201 swing through connecting rod 212, thereby realize the purpose of angle modulation, and under the effect of worm gear auto-lock, after motor 210 stall, can fix a position brush holder 201.

Further, an arc-shaped support plate 309 is arranged on one side of the fan-shaped support plate 301, the arc-shaped support plate 309 is arranged at the lower end of the fan-shaped support plate 301, the arc-shaped support plate 309 is arranged between the fan-shaped support plate 301 and the support plate 102, the top surfaces of the arc-shaped support plate 309 and the grinding wheel plate 302 are concentric arc surfaces, three laser range finders 310 are uniformly arranged on the arc-shaped support plate 309, the top end of each laser range finder 310 faces the bottom of the first carbon brush groove 207 on one side of the carbon brush mold 206, when in use, a standard or used carbon brush can be installed in the first carbon brush groove 207, the arc surface of the carbon brush is a template of the carbon brush to be ground, therefore, three laser range finders 310 are added, when the grinding angle of the carbon brush is adjusted, the laser range finder 310 sends a distance measuring signal, the principle of determining a circle by using three points is utilized, when the distances measured by the three points are consistent, the arc surface of the standard carbon brush and the arc surface of the grinding wheel plate are concentric arc, the angle is the best angle for grinding, and the grinding effect is further effectively improved.

Further the two positioning and clamping mechanisms 2 are symmetrically arranged, and the working efficiency can be improved in multiples by arranging the two positioning and clamping mechanisms 2.

The grinding machine further comprises a dust removal system 4, the dust removal system 4 comprises two dust removal supports 401 and two dust suction nozzles 402, a dust collecting pipe 403 and a dust collector 404, the dust removal supports 401 are fixed between the supporting plates 102, the dust suction nozzles 402 are fixed on the dust removal supports 401, the dust suction nozzles 402 are arranged on two sides of the positioning clamping mechanism 2, the dust suction nozzles 402 are arranged above the grinding wheel plate 302, the dust collector 404 is arranged on the lower portion of the supporting plate 102, the dust suction nozzles 402 and the dust collector 404 are connected through the dust collecting pipe 403, a large amount of harmful dust can be generated in the grinding process of the carbon brush, the dust generated in the grinding process can be effectively collected through the dust removal system 4, and therefore the problem that the subsequent grinding precision is influenced and the health of processing workers is greatly harmed is avoided.

Further, the mounting groove 204 is a dovetail groove with a large upper part and a small lower part, the handle 205 is inserted into the mounting groove 204, and due to the special structural design of the mounting groove 204, on one hand, the handle 205 is convenient to connect and take out, so that the handle 205 can be quickly and accurately connected and disconnected, and the problem that the handle 205 falls off and is not accurately positioned is solved.

Further, the supporting plate 102 is provided with an observation hole 104, the observation hole 104 is arranged at a contact position of the carbon brush and the grinding wheel plate 302, and the grinding condition can be observed in real time by using the observation hole 104, and meanwhile, the condition of adjusting the grinding angle of the carbon brush can also be observed.

Further still include electric cabinet 5, be equipped with PLC controller 501 in the electric cabinet 5, motor driver 502 and power 503, power 503 and PLC controller 501 electric connection, motor driver 502 is connected to PLC controller 501, laser range finder 310 and dust catcher 404, and grinding motor 306 and motor 210 are connected to motor driver 502, utilize PLC controller 501 to form the utility model discloses a full automatic control function, grinding motor 306 and motor 210 adopt step motor to utilize motor driver 502 to control, make each motion homoenergetic accurate control stroke etc. promote the grinding precision of automatic grinding in-process.

A use method of an automatic grinding tool for a carbon brush cambered surface comprises the following steps:

the method comprises the following steps: placing a standard carbon brush in a carbon brush groove 207 aligned with the laser range finder 310, inserting the handle 205 in the mounting groove 204 to the bottom, starting the power supply 503, and controlling the brush holder 201 to reset by the PLC 501;

step two: when the laser range finder 310 works, the PLC 501 controls the motor 210 to start;

step three: the motor driver 502 controls the motor 210 to operate, the push rod 211 moves in a telescopic manner to drive the push rod 211 to move so as to push the brush holder 201 to rotate in the arc-shaped sliding groove 103 by taking the positioning pin shaft 202 as an axis;

step four: the laser range finders 310 transmit signals, when the distances from the bottom arc surface of the standard carbon brush to the three laser range finders 310 are measured to be the same in the rotation process of the brush holder 201, the bottom arc surface of the standard carbon brush is concentric with the top arc surface of the grinding wheel plate 302, the brush holder 201 reaches a position suitable for grinding, the motor 210 stops running, and the brush holder 201 finishes positioning;

step five: taking out the grip 205, respectively placing the unground carbon brushes into the carbon brush grooves 207, fixing the carbon brushes by using a spring stopper, and then inserting the grip 205 into the mounting groove 204 to the bottom;

step six: the PLC 501 controls the grinding motor 306 to start through the motor driver 502, drives the grinding wheel plate 302 to swing left and right, and starts carbon brush grinding;

step seven: the grinding wheel plate 302 grinds according to a program set by the PLC 501, meanwhile, the dust collector 404 starts to work, and after the set program is finished, the grinding motor 306 stops moving and automatically resets;

step eight: taking out the ground carbon brush, and controlling the brush holder 201 to reset by the PLC 501;

step nine: if the carbon brushes with the same radian need to be ground, the unground carbon brushes are directly installed in the carbon brush grooves 207 and fixed, the PLC 501 is used for repeatedly grinding, the brush holder 201 keeps the last positioning position, the steps from six to eight are repeated, if the carbon brushes with different radians need to be ground, the standard carbon brushes with other radians are placed in the carbon brush grooves 207 aligned with the laser range finder 310, and the steps from one to eight are repeated.

Claims (8)

1. The utility model provides an automatic grinding tool of carbon brush cambered surface which characterized in that: comprises a bracket (1), a positioning clamping mechanism (2) and a grinding mechanism (3);

the grinding device is characterized in that the support (1) comprises a support table (101), support plates (102) are vertically arranged on the support table (101), two supports (1) are symmetrically arranged, and the grinding mechanism (3) is arranged between the two supports (1);

the grinding mechanism (3) comprises two fan-shaped support plates (301), the top arc surfaces of the two fan-shaped support plates (301) are connected with a grinding wheel plate (302), the fan-shaped support plates (301) are arranged on two sides of the grinding wheel plate (302), the lower ends of the fan-shaped support plates (301) are fixedly connected with a rotating shaft (303), two ends of the rotating shaft (303) are rotatably connected between the two support plates (102), a connecting rod (304) is arranged above the rotating shaft (303), the connecting rod (304) is arranged between the fan-shaped support plates (301), the connecting rod (304) is fixedly connected on the axis position of the fan-shaped support plates (301), a fixed seat (305) is arranged on the inner side of the bracket (1), a grinding motor (306) is arranged on the fixed seat (305), the output end of the grinding motor (306) is fixedly connected with one end of a rotating arm (307), the other end of the rotating arm (307) is rotatably connected with one end of a swinging arm (308), and the other end of the swinging arm (308) is rotatably connected on the connecting rod (304);

location clamping machine structure (2) set up in grinding mechanism (3) top, including brush holder (201), brush holder (201) lower extreme rotates through locating pin axle (202) and connects between backup pad (102), be equipped with arc spout (103) on backup pad (102), brush holder (201) upper end is equipped with slide bar (203), slide bar (203) sliding connection is in arc spout (103), be equipped with mounting groove (204) on brush holder (201), mounting groove (204) in-connection has handle (205), be equipped with carbon brush mould (206) on handle (205), be equipped with a plurality of carbon brush grooves (207) on carbon brush mould (206), carbon brush groove (207) top is equipped with joint hole (208), install in carbon brush groove (207), the top is blocked the joint in carbon brush hole (208) through the spring, the terminal surface is laminated with emery wheel board (302) upper surface under the carbon brush.

2. The automatic grinding tool for the carbon brush arc surface according to claim 1, characterized in that: supporting bench (101) one side be equipped with transmission case (209), be equipped with turbine and worm in transmission case (209), be connected with motor (210) on the turbine, the vertical setting of worm, the worm external connection has push rod (211), push rod (211) set up in transmission case (209) outside, push rod (211) top is rotated and is connected the one end at connecting rod (212), connecting rod (212) other end is connected on slide bar (203).

3. The automatic grinding tool for the carbon brush arc surface according to claim 2, characterized in that: fan-shaped extension board (301) one side be equipped with arc backup pad (309), arc backup pad (309) set up at fan-shaped extension board (301) lower extreme, arc backup pad (309) set up between fan-shaped extension board (301) and backup pad (102), arc backup pad (309) and emery wheel board (302) top surface are concentric arc surface, evenly be provided with three laser range finder (310) on arc backup pad (309), laser range finder (310) top is towards first carbon brush groove (207) bottom on one side of carbon brush mould (206).

4. The automatic grinding tool for the carbon brush arc surface according to claim 2, characterized in that: the two positioning and clamping mechanisms (2) are symmetrically arranged.

5. The automatic grinding tool for the carbon brush arc surface according to claim 4, wherein: the dust removal device is characterized by further comprising a dust removal system (4), wherein the dust removal system (4) comprises two dust removal supports (401), two dust suction nozzles (402), a dust collection pipe (403) and a dust collector (404), the dust removal supports (401) are fixed between the supporting plates (102), the dust suction nozzles (402) are fixed on the dust removal supports (401), the dust suction nozzles (402) are arranged on two sides of the positioning clamping mechanism (2), the dust suction nozzles (402) are arranged above the grinding wheel plate (302), the dust collector (404) is arranged on the lower portion of the supporting plates (102), and the dust suction nozzles (402) and the dust collector (404) are connected through the dust collection pipe (403).

6. The automatic grinding tool for the carbon brush arc surface according to claim 1, characterized in that: the mounting groove (204) is a dovetail groove with a large upper part and a small lower part, and the handle (205) is inserted in the mounting groove (204).

7. The automatic grinding tool for the carbon brush arc surface according to claim 1, characterized in that: the carbon brush grinding wheel is characterized in that an observation hole (104) is formed in the supporting plate (102), and the observation hole (104) is formed in the contact position of the carbon brush and the grinding wheel plate (302).

8. The automatic grinding tool for the carbon brush arc surface according to claim 5, wherein: still include electric cabinet (5), be equipped with PLC controller (501), motor driver (502) and power (503) in electric cabinet (5), power (503) and PLC controller (501) electric connection, motor driver (502), laser range finder (310) and dust catcher (404) are connected in PLC controller (501), grinding motor (306) and motor (210) are connected in motor driver (502).

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