CN212304149U

CN212304149U - Carbon brush with automatic short alarm function

Info

Publication number: CN212304149U
Application number: CN202021138934.9U
Authority: CN
Inventors: 祝迪; 张晋境; 董峰
Original assignee: Hubei Qingjiang Hydroelectric Development Co ltd
Current assignee: Hubei Qingjiang Hydroelectric Development Co ltd
Priority date: 2020-06-18
Filing date: 2020-06-18
Publication date: 2021-01-05
Anticipated expiration: 2030-06-18

Abstract

The utility model provides a carbon brush of short automatic alarm, including carbon brush and brush braid on the carbon brush, the carbon brush is established in the casing, be equipped with the blind hole on the carbon brush, the blind hole is inside to be equipped with the carbon-point, carbon-point outside border is equipped with the insulator, be equipped with the detection line on the carbon-point, the detection line is connected with detection device electricity, the brush braid is connected with detection device electricity, the carbon brush wearing and tearing reach the carbon-point position, the carbon-point forms the return circuit through collecting ring, brush braid and detection device and reports police, detection device includes bee calling organ and pilot lamp, bee calling organ and pilot lamp series connection, the pilot lamp is connected with the carbon brush electricity, the pilot lamp is connected with the carbon-point electricity through the power, report glimp, carbon brush and current collecting ring are established ties, and alarm indicator lights are bright, the utility model discloses a preparation technology is very simple, and the action of reporting to the police is also reliable, simple structure, and convenient to use is fit for using widely.

Description

Carbon brush with automatic short alarm function

Technical Field

The utility model belongs to the technical field of the carbon brush detects and specifically relates to a short automatic alarm's carbon brush is related to.

Background

The carbon brush of the generator is worn all the time in the running process, belongs to an easily-consumed product, and needs to be replaced once in half a year to one year on average according to different working conditions. However, the wear condition of the carbon brush is observed by naked eyes of an inspection worker, so that the workload of the inspection worker is increased, and the worn carbon brush can be overlooked if the inspection worker observes carelessly.

In the prior art, a carbon brush on a commutator of an electric motor includes a housing, a carbon brush slidably disposed in an inner cavity of the housing, and at least one alarm indicator, wherein an elastic element is supported at one end of the carbon brush, and the other end of the carbon brush is in contact with a circumferential surface of the commutator. The carbon brush always props up on the commutator under the effect of elastic element, in order to monitor the degree of wear of carbon brush so that change the carbon brush in time, bury in the carbon brush and have buried the wire, when the carbon brush has slided to set for the position after wearing and tearing, the wire exposes and makes the warning indicator light, and this technical scheme makes the carbon brush bury the manufacturing process of wire more complicated underground. The other scheme is that a hole is formed in a set position of the carbon brush, a light-emitting element is arranged on one side of the carbon brush, a receiving element is arranged on the other side of the carbon brush, and after the carbon brush is abraded and moves to the set position, the receiving element can receive light rays of the light-emitting element through the hole to enable the alarm indicator lamp to give an alarm. However, the holes are easily blocked by dust to block the light path, so that the alarm is disabled.

Chinese patent CN100350682C "carbon brush wear sensing device of motor" a carbon brush wear sensing device of motor, including a shell, a carbon brush, an elastic element, a circuit board device provided with an alarm indicator, a conductive probe is arranged on the circuit board device, the conductive probe is electrically connected with the alarm indicator, and the surface of the carbon brush is provided with a contact part. Utility model has utilized the carbon brush to be the characteristic of conductor, and be provided with the contact site on the carbon brush, when the carbon brush wearing and tearing and need change, alarm indicator passes through conductive probe and carbon brush electricity and is connected, and alarm indicator lights, but this structure is in long-term operation in-process, and conductive probe is comparatively loose with the casing installation, and vibrations will make conductive probe pine fall slightly, leads to the unable continuation monitoring of carbon brush.

Chinese patent CN109983635A "carbon brush wear measuring device" the utility model relates to a carbon brush wear measuring device, it includes: a slip ring (3); a carbon brush (4) which is arranged so as to be movable in a direction of movement (5) and which is preloaded in sliding contact with the slip ring (3); an indicator material (7) which extends in, on or beside the carbon brush (4) along the direction of movement (5) and is connected to the carbon brush (4) in such a way that it is moved together with the carbon brush (4) at least with respect to the direction of movement (5), wherein the indicator material (7) is preloaded in sliding contact with the slip ring (3); an insulator (8) which is provided between the carbon brush (4) and the indicating material (7) and electrically insulates the carbon brush (4) from the indicating material (7); and a resistance measuring device (9) for measuring the resistance between two measuring points (10, 11; 10, 15), between which at least one section of the indicating material (7) and one section of the slip ring (3) are present, wherein the specific resistance of the indicating material (7) is greater than the specific resistance of the carbon brush (4). The length of carbon brush (4) is monitored to the resistance that this structure adopted detection carbon brush (4), but sliding ring (3) can have some voltage in long-term use, and this voltage can make the resistance of carbon brush (4) wrong numerical value appear, need shut down the ground and release the inside voltage of sliding ring (3), so this equipment can appear certain false numerical value in the use engineering, can influence measurement personnel's judgement.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a short automatic alarm's carbon brush, solves the comparatively complicated problem of generator carbon brush wearing and tearing inspection.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a carbon brush capable of automatically alarming for short circuit comprises a carbon brush and a brush braid on the carbon brush, wherein the carbon brush is arranged in a shell, a blind hole is formed in the carbon brush, a carbon rod is arranged in the blind hole, an insulator is arranged on the periphery of the outer portion of the carbon rod, a detection line is arranged on the carbon rod and electrically connected with a detection device, and the brush braid is electrically connected with the detection device;

the carbon brush is worn to the position of the carbon rod, and the carbon rod forms a loop through the collecting ring, the brush braid and the detection device to give an alarm.

In the preferred scheme, the detection device comprises a buzzer and an indicator lamp, wherein the buzzer and the indicator lamp are connected in series, the indicator lamp is electrically connected with the carbon brush, and the indicator lamp is electrically connected with the carbon rod through a power supply.

Preferably, the insulator material is gypsum or ceramic.

In the preferred scheme, a pressing shell is arranged on one side of the shell, a pressing sheet is arranged inside the pressing shell and is in sliding connection with the pressing shell, and a spring is arranged between the upper portion of the pressing sheet and the top of the pressing shell.

In the preferred scheme, the middle part of the carbon brush is provided with a pressure groove, and the pressing sheet penetrates through the pressing shell and is arranged inside the pressure groove.

In the preferred scheme, compress tightly the inside sliding block that is equipped with of shell, the sliding block with compress tightly shell sliding connection.

In the preferred scheme, the sliding block middle part is equipped with logical groove, the cramp passes logical groove and establishes inside the carbon brush indent.

In the preferred scheme, the sliding block both sides are equipped with the slip table, compress tightly the inside both sides of shell and are equipped with the spout, the slip table is established inside the spout.

In the preferred scheme, the spring is established between sliding block and the pressure shell.

In the preferred scheme, two ends of the sliding block are provided with organ covers, and two ends of the organ covers are arranged at two ends of the sliding opening of the pressing shell;

the pressing piece end is provided with a handle.

The utility model provides a short autoalarm's carbon brush crosses, can be in the generator use, the wearing and tearing condition of incessant monitoring carbon brush, produce the signal of telecommunication and in time report to the police after the carbon brush wearing and tearing arrive the position, the suggestion need change the carbon brush immediately, the carbon brush is worn and torn the back in the use, effectively prevent the direct current collecting ring surface contact of the electrically conductive braid of copper, the carbon-point, the circuit switch-on that carbon brush and collecting ring establish ties and form, alarm indicator lights, when carbon brush wearing and tearing and need change, newspaper glimpse pilot lamp passes through, the carbon-point, carbon brush and collecting ring establish ties, alarm indicator lights, the utility model discloses a preparation technology is very simple, and the action of reporting to the police is also reliable, simple structure, and convenient to use is fit for using widely.

Drawings

The invention will be further explained with reference to the following figures and examples:

FIG. 1 is a general structural diagram A of the present invention;

FIG. 2 is a general structural diagram B of the present invention;

fig. 3 is a structural diagram of the electrical connection between the carbon brush and the detecting device of the present invention;

fig. 4 is a side view cross-sectional structural view of the carbon brush of the present invention;

fig. 5 is a structural diagram of the structure from the carbon brush wear to the detection position of the carbon brush of the present invention;

FIG. 6 is a view showing the structure of the brush and housing assembly of the present invention;

FIG. 7 is a front view of the brush and housing assembly of the present invention;

FIG. 8 is a side view cross-sectional structural view of the housing of the present invention;

FIG. 9 is a cross-sectional view of the housing of the present invention;

in the figure: a housing 1; a pressing shell 2; a chute 201; a carbon brush 3; a pressure groove 301; a carbon rod 302; an insulator 303; brushing an plait 4; a buzzer 5; an indicator light 6; a detection line 7; a compression sheet 8; a handle 801; an organ cover 9; a power supply 10; a slider 11; a through-slot 1101; a sliding table 1102; a spring 12; a slip ring 13; a detection device 14.

Detailed Description

As shown in fig. 1 to 9, the carbon brush capable of automatically alarming for short circuit includes a carbon brush 3 and a brush braid 4 on the carbon brush 3, the carbon brush 3 is arranged inside a shell 1, a blind hole is formed in the carbon brush 3, a carbon rod 302 is arranged inside the blind hole, an insulator 303 is arranged on the periphery of the outer portion of the carbon rod 302, a detection line 7 is arranged on the carbon rod 302, the detection line 7 is electrically connected with a detection device 14, the brush braid 4 is electrically connected with the detection device 14, the carbon brush 3 is worn to the position of the carbon rod 302, and the carbon rod 302 forms a loop through a current collecting ring 13, the brush braid 4 and the detection device 14 to. With the structure, as shown in fig. 1-5, the detecting device 14, the carbon rod 302, the carbon brush 3 and the current collecting ring 13 form a series loop, and at this time, the detecting device 14 gives an alarm, so that the whole carbon brush 3 needs to be replaced, and the structure is simple and convenient to use.

In a preferable scheme, the detection device 14 comprises a buzzer 5 and an indicator lamp 6, the buzzer 5 and the indicator lamp 6 are connected in series, the indicator lamp 6 is electrically connected with the carbon brush 3, and the indicator lamp 6 is electrically connected with the carbon rod 302 through a power supply 10. From this structure, as the structure shown in fig. 5, buzzer 5 and pilot lamp 6 are established ties and become the electricity and connect, buzzer 5 is connected with carbon brush 3 electricity through brush braid 4, pilot lamp 6 is connected with power 10 electricity through resistance and diode, power 10 is connected with carbon-point 302 electricity, because be equipped with insulator 303 between carbon-point 302 and carbon brush 3, so this circuit can not form the return circuit, can not appear reporting the condition, when carbon-point 302 and slip ring 13 contact, rescue can make whole structure form the return circuit, buzzer 5 and pilot lamp 6 light, promote to change carbon brush 3.

Wherein the buzzer 5 and the indicator light 6 can also be connected in parallel.

Preferably, the insulator 303 is made of gypsum or ceramic. With the structure, after the gypsum and the ceramic are hardened, the hardness of the carbon brush is similar to that of the carbon brush 3, the collector ring 13 cannot be abraded, and used materials are replaced according to the use condition.

In the preferred scheme, 1 one side of casing is equipped with compresses tightly shell 2, compresses tightly 2 inside compressing tightly the shell and is equipped with compressing blade 8, compressing blade 8 and compressing tightly 2 sliding connection of shell, be equipped with spring 12 between compressing blade 8 top and the compressing tightly 2 tops of shell. With the structure, as shown in fig. 6-8, the pressing sheet 8 is arranged on one side of the housing 1 and can be drawn out, or the pressing carbon brush 3 can be pressed by the spring 12 moving up and down along the pressing shell 2, the torsion spring structure is complex when the carbon brush 3 is replaced, and the replacement of the carbon brush 3 is convenient.

In a preferable scheme, the middle part of the carbon brush 3 is provided with a pressing groove 301, and the pressing sheet 8 penetrates through the pressing shell 2 and is arranged inside the pressing groove 301. With the structure, the pressing groove 301 is used for placing the pressing sheet 8, and the pressing sheet 8 is placed to slide freely on the carbon brush 3, so that the situation of unstable pressing is caused.

In a preferred scheme, a sliding block 11 is arranged inside the pressing shell 2, and the sliding block 11 is connected with the pressing shell 2 in a sliding mode. With the structure, the sliding block 11 has the sliding function with the pressing shell 2, and the pressing sheet 8 and the sliding block 11 have the sliding function.

In a preferred embodiment, a through groove 1101 is formed in the middle of the sliding block 11, and the pressing sheet 8 is disposed inside the pressing groove 301 of the carbon brush 3 through the through groove 1101. With the structure, the pressing piece 8 and the sliding block 11 have a sliding function.

In the preferred scheme, sliding block 11 both sides are equipped with slip table 1102, and the inside both sides of pressure shell 2 are equipped with spout 201, slip table 1102 is established inside spout 201. With this structure, the sliding block 11 can be kept stable all the time without deviation.

Preferably, the spring 12 is disposed between the sliding block 11 and the pressing shell 2. With this structure, the spring 12 is used to abut against the upper end surface of the sliding block 11, and drives the sliding block 11 to press downwards.

In the preferred scheme, the two ends of the sliding block 11 are provided with the organ covers 9, and the two ends of the organ covers 9 are arranged at the two ends of the sliding opening of the pressing shell 2. With this structure, the organ cover 9 plays a dustproof role.

The end of the pressing sheet 8 is provided with a handle 801. With this structure, the handle 801 is used to pull out the pressure piece 8 and then lift the pressure piece 8 to place it on the pressure groove 301 of the new carbon brush 3.

The above-mentioned embodiments are merely preferred embodiments of the present invention, and should not be considered as limitations of the present invention, and the protection scope of the present invention should be defined by the technical solutions described in the claims, and includes equivalent alternatives of technical features in the technical solutions described in the claims. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.

Claims

1. The utility model provides a short automatic alarm's carbon brush, characterized by: the carbon brush comprises a carbon brush (3) and a brush braid (4) on the carbon brush (3), wherein the carbon brush (3) is arranged inside a shell (1), a blind hole is formed in the carbon brush (3), a carbon rod (302) is arranged inside the blind hole, an insulator (303) is arranged on the periphery of the outer part of the carbon rod (302), a detection line (7) is arranged on the carbon rod (302), the detection line (7) is electrically connected with a detection device (14), and the brush braid (4) is electrically connected with the detection device (14);

the carbon brush (3) is worn to the position of the carbon rod (302), and the carbon rod (302) forms a loop through the collecting ring (13), the shunt (4) and the detection device (14) to alarm.

2. The carbon brush capable of automatically alarming for the over short according to claim 1, wherein: the detection device (14) comprises a buzzer (5) and an indicator light (6), the buzzer (5) and the indicator light (6) are connected in series, the indicator light (6) is electrically connected with the carbon brush (3), and the indicator light (6) is electrically connected with the carbon rod (302) through a power supply (10).

3. The carbon brush capable of automatically alarming for the over short according to claim 1, wherein: the insulator (303) material is gypsum or ceramic.

4. The carbon brush capable of automatically alarming for the over short according to claim 1, wherein: casing (1) one side is equipped with compresses tightly shell (2), compresses tightly the inside compact heap (8) that is equipped with of shell (2), compact heap (8) and compress tightly shell (2) sliding connection, be equipped with spring (12) between compact heap (8) top and the shell (2) top that compresses tightly.

5. The carbon brush capable of automatically alarming for the over short according to claim 4, wherein: a pressure groove (301) is formed in the middle of the carbon brush (3), and the pressing sheet (8) penetrates through the pressing shell (2) and is arranged inside the pressure groove (301).

6. The carbon brush capable of automatically alarming for the over short according to claim 4, wherein: compress tightly inside sliding block (11) of being equipped with of shell (2), sliding block (11) and compress tightly shell (2) sliding connection.

7. The carbon brush capable of automatically alarming for the over short according to claim 6, wherein: a through groove (1101) is formed in the middle of the sliding block (11), and the pressing sheet (8) penetrates through the through groove (1101) and is arranged inside the pressing groove (301) of the carbon brush (3).

8. The carbon brush capable of automatically alarming for the over short as claimed in claim 7, wherein: sliding block (11) both sides are equipped with slip table (1102), compress tightly the inside both sides of shell (2) and are equipped with spout (201), slip table (1102) are established inside spout (201).

9. The carbon brush capable of automatically alarming for the over short as claimed in claim 8, wherein: the spring (12) is arranged between the sliding block (11) and the pressing shell (2).

10. The carbon brush capable of automatically alarming for the over short as claimed in claim 7, wherein: two ends of the sliding block (11) are provided with organ covers (9), and two ends of each organ cover (9) are arranged at two ends of the sliding opening of the pressing shell (2);

the end part of the pressing sheet (8) is provided with a handle (801).