CN217032439U - Carbon brush real-time status monitoring device - Google Patents
Carbon brush real-time status monitoring device Download PDFInfo
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- CN217032439U CN217032439U CN202121957024.8U CN202121957024U CN217032439U CN 217032439 U CN217032439 U CN 217032439U CN 202121957024 U CN202121957024 U CN 202121957024U CN 217032439 U CN217032439 U CN 217032439U
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- carbon brush
- coil spring
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- accelerometer
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Abstract
The utility model provides a carbon brush real-time state monitoring device which comprises a detection unit and a coil spring, wherein the coil spring is used for fixedly installing the detection unit; the pre-tightening force applying side of the coil spring is abutted against the carbon brush, and the coil spring rotates along with the movement of the carbon brush after the carbon brush is worn; the detection unit comprises an accelerometer and a processing unit; the output end of the accelerometer is connected to the input end of the processing unit and used for detecting the rotation amount of the coil spring when the carbon brush is worn, and the processing unit determines the wear state of the carbon brush according to a detection signal output by the accelerometer; the carbon brush abrasion detection device can accurately detect abrasion of the carbon brush and upload monitoring data in time, and can effectively avoid influence of carbon powder generated in the abrasion process of the carbon brush on detection, thereby ensuring detection precision and early warning on the abrasion degree of the carbon brush accurately, and further ensuring the working stability and safety of the whole generator or motor.
Description
Technical Field
The utility model relates to a detection system, in particular to a carbon brush real-time state monitoring device.
Background
The carbon brush is an important component in the brushed generator or the motor, and is used for transmitting energy between a fixed part and a rotating part of the generator or the motor, the carbon brush is abraded in the running process of the generator or the motor, and the normal running of the generator or the motor is seriously affected after the carbon brush is abraded to a certain degree, so the abrasion degree of carbonization needs to be monitored, although the abrasion of the carbon brush in the prior art is detected in various ways, such as image detection, ultrasonic detection, infrared detection or through a detection circuit, and the like, the detection modes can not accurately detect the carbon brush because the abrasion of the carbon brush can generate a large amount of carbon powder, the image and ultrasonic have serious deviation and can not accurately identify the carbon brush, and the infrared detection means that the carbon brush works in a scene with higher temperature, the infrared radiation brought by high temperature can cause serious influence on the infrared detection, the detection circuit generally detects by setting a detection loop and has two contacts, one of the two contacts is fixed, the other contact is arranged on the carbon brush, when the abrasion of the carbon brush does not reach a set high degree, the loop where the two contacts are positioned is disconnected, no signal is output, when the carbon brush is abraded to a certain degree, the movable contact and the fixed contact are contacted, and the loop is conducted, so as to carry out early warning.
Therefore, in order to solve the above technical problems, it is necessary to provide a new technical means.
SUMMERY OF THE UTILITY MODEL
In view of the above, an object of the present invention is to provide a real-time status monitoring device for a carbon brush, which can accurately detect wear of the carbon brush and upload monitoring data in time, and can effectively avoid influence of carbon powder generated in a wear process of the carbon brush on the detection, so as to ensure detection accuracy and accurately perform early warning on a wear degree of the carbon brush, thereby ensuring working stability and safety of the whole generator or motor.
The utility model provides a carbon brush real-time state monitoring device which comprises a detection unit and a coil spring, wherein the coil spring is used for fixedly mounting the detection unit;
the pretightening force applying side of the coil spring is abutted against the carbon brush, and the coil spring rotates along with the motion of the carbon brush after the carbon brush is worn;
the detection unit comprises an accelerometer and a processing unit; the output end of the accelerometer is connected to the input end of the processing unit and used for detecting the rotation amount of the coil spring when the carbon brush is worn, and the processing unit determines the wear state of the carbon brush according to a detection signal output by the accelerometer.
Further, the detection unit further comprises a mounting box, the mounting box is arranged in the hollow position of the coil spring, and the accelerometer and the processing unit are arranged in the mounting box.
Further, the mounting box comprises a box body and a box cover;
the outer side wall of the bottom of the box body extends outwards along the radial direction to form a flange, the diameter of the box cover is larger than the outer diameter of the opening of the box body, mounting grooves are formed in the flange, the outer side wall of the box body and the edge of the box cover, and the inner side of the coil spring is embedded into the mounting grooves.
Further, the box body lateral wall is provided with the via hole, the lateral wall of box body is provided with the embedded groove, embedded groove and via hole intercommunication, the inner tip bending type of coil spring becomes embedding portion, embedding portion extends to in the box body through the embedded groove.
Further, the box cover is radially sunk from the edge to form a yielding groove, and the opening of the yielding groove is just opposite to the opening of the embedded groove when the box cover and the box body are covered.
Furthermore, the detection unit further comprises a temperature detection module, and the output end of the temperature detection module is connected with the input end of the processing unit.
Further, the processing unit comprises a processing circuit, a wireless transmission module and an AD conversion module;
processing circuit passes through wireless transmission module and external monitoring equipment communication connection, processing circuit's temperature signal input end is connected in temperature detection module's output, processing circuit's acceleration signal input part is connected with AD conversion module's output, AD conversion module's input is connected with accelerometer's output.
The utility model has the beneficial effects that: according to the utility model, the abrasion of the carbon brush can be accurately detected, the monitoring data can be uploaded in time, and the influence of the carbon powder generated in the abrasion process of the carbon brush on the detection can be effectively avoided, so that the detection precision can be ensured, the abrasion degree of the carbon brush can be accurately pre-warned, and the working stability and the safety of the whole generator or motor can be further ensured.
Drawings
The utility model is further described below with reference to the following figures and examples:
fig. 1 is a schematic view of a coil spring according to the present invention.
Fig. 2 is a side view of the coil spring shaft in fig. 1.
Fig. 3 is a schematic structural diagram of the mounting box of the present invention.
Fig. 4 is an electrical schematic of the present invention.
Fig. 5 is a schematic view of the mounting box and coil spring mounting structure of the present invention.
Fig. 6 is a schematic view of the mounting structure of the present invention.
Detailed Description
The utility model is described in further detail below with reference to the attached drawing figures:
the utility model provides a carbon brush real-time state monitoring device which comprises a detection unit and a coil spring 1, wherein the coil spring 1 is used for fixedly installing the detection unit;
the pre-tightening force applying side of the coil spring 1 abuts against the carbon brush and the coil spring rotates along with the movement of the carbon brush after the carbon brush is worn;
the detection unit comprises an accelerometer and a processing unit; the output end of the accelerometer is connected to the input end of the processing unit and used for detecting the rotation amount of the coil spring when the carbon brush is worn, and the processing unit determines the wear state of the carbon brush according to a detection signal output by the accelerometer.
Wherein, wind spring one end forms the stiff end and is fixed, and the other end of wind spring forms inner, the pretightning force application side of wind spring supports and leans on in the carbon brush, and wherein, the accelerometer in this embodiment adopts LIS3DH acceleration detection circuit, certainly also can adopt the acceleration detection circuit of other models, through above-mentioned structure, can carry out the accuracy to the wearing and tearing of carbon brush and detect and in time upload monitoring data, and can effectively avoid the carbon dust that carbon brush wearing and tearing in-process produced to the influence that detects, thereby can guarantee to detect the precision and can accurately carry out the early warning to carbon brush wearing and tearing degree, and then ensure the job stabilization nature and the security of whole generator or motor.
As shown in fig. 1 and 2, one end of the coil spring 1 forms a fixed end and is installed on a mounting plate 2, one end of the mounting plate is bent to form a hanging part 4, so that the mounting plate can be installed on a carbon brush installation place conveniently, the other end of the coil spring is an inner end, the end is a free end, the inside and the outside are the relation of the inside and the outside after the coil spring is wound to form a ring shape, the free end of the coil spring is in the ring shape and is called as the inner end, and the central part of the coil spring 1 is a hollow part for arranging a mounting box, so that the structure can be simplified; the working principle of the utility model is as follows:
as shown in fig. 6, when the carbon brush is installed, specifically, as shown in fig. 6, a pretightening force applying side of the coil spring is the left side in fig. 1, the coil spring in fig. 6 abuts against the carbon brush 11, when the installation plate is fixed, the position of the coil spring is also fixed, at this time, the length of the carbon brush is long, and the pretightening force is abutted against the left side of the coil spring and causes the coil spring to rotate towards the right side, so as to generate an elastic pretightening force, the force is applied to the carbon brush on the left side, and the position information at this time is recorded, when the carbon brush is worn during operation, the carbon brush gradually moves towards the left after being worn, at this time, the coil spring starts to reset and generate rotation, the accelerometer detects a rotation amount of the coil spring, that is, and calculates an arc length of the rotation of the coil spring according to the angle (the calculation method is the prior art), the arc length corresponds to the wear amount of the carbon brush, and the processing circuit outputs the wear amount to an external detection device; in addition, through the structure of the utility model, the coil spring provides a pretightening force for the carbon brush, so that the carbon brush and the slip ring can be in close contact and electric connection, thereby simplifying the structure of the whole carbon brush device without other pretightening mechanisms.
In this embodiment, the detection unit further comprises a mounting box 1, the mounting box is arranged in the hollow part 11 of the coil spring, the accelerometer and the processing unit are arranged in the mounting box, and by means of the structure, the detection unit can be conveniently mounted and protected, the influence of carbon powder on the detection element is prevented, the final detection accuracy is not influenced, and the whole device is simple in structure.
Specifically, the mounting box comprises a box body 5 and a box cover 9;
the bottom lateral wall of box body 5 radially outwards extends and forms flange 6, the diameter of lid 9 is greater than the external diameter of the 5 openings of box body, the edge of flange 6, the lateral wall of box body 5 and lid 9 forms the mounting groove, the inboard embedding of wind spring 1 is in the mounting groove, as above, the wind spring is an annular structure, and it is inboard to use the annular to be located annular inside for the reference, and the outside is the outside, through this kind of structure, can stabilize fix mounting box and wind spring to drive the synchronous rotation of mounting box in the wind spring rotation process, thereby make the accurate degree of wear who calculates the carbon brush of accelerometer.
In this embodiment, 5 lateral walls of box body are provided with via hole 7, 5 lateral walls of box body are provided with embedded groove 8, embedded groove 8 and via hole 7 intercommunication, the inner tip bending type of coil spring 1 becomes embedding portion 3, embedding portion 3 extends to box body 5 in through embedded groove 8, as shown in fig. 3, through this structure, conveniently carry out fixed mounting, more importantly to the mounting box: on one hand, the temperature of the carbon brush can be detected by the temperature detection module through the through hole, the through hole can also be used as a heat dissipation channel, and on the other hand, after the embedded part formed at the end part of the inner end of the coil spring extends into the mounting box, the positions of the mounting box and the coil spring are limited, so that the mounting box and the coil spring can be completely synchronous in rotation when the coil spring is reset and rotated, and the detection accuracy of the accelerometer is ensured; and the coil spring is a metal element and has good heat conduction performance, so that a large amount of heat generated by the electric device of the detection unit in operation is conducted out of the mounting box through the inner end of the coil spring, thereby carrying out good heat dissipation and ensuring the working stability of the whole device.
This embodiment card, lid 9 is by the edge radial form groove 10 of stepping down that sinks, the opening in the groove of stepping down is just right with the opening part of embedded groove 8 when lid and box body lid are in, through this structure, steps down the embedding part of wind spring to the convenience is installed fixedly to the mounting box.
In this embodiment, the detecting unit further includes a temperature detecting module, an output end of the temperature detecting module is connected with an input end of the processing unit, wherein the temperature detecting module adopts an existing temperature detecting module, such as an LM94002 temperature detecting module, for detecting the temperature of the carbon brush, so as to accurately detect the real-time temperature state of the carbon brush (although the temperature of the carbon brush is not directly detected, an error generated by the temperature detection is within an allowable range).
In this embodiment, the processing unit includes a processing circuit, a bluetooth module, and an AD conversion module;
processing circuit passes through bluetooth module and external monitoring equipment communication connection, processing circuit's temperature signal input part is connected in the output of temperature detection module, processing circuit's acceleration signal input part and AD conversion module's output are connected, AD conversion module's input is connected with the output of accelerometer, and processing circuit adopts current chip and peripheral circuit thereof, for example: the CC2640R2FRSM chip or the STM32 series chip is selected according to actual needs, the wireless transmission module adopts the existing Bluetooth module, UWB module and the like, and the AD conversion module adopts the existing chip; the external device is a terminal device with a Bluetooth function, such as an existing monitoring host, a server or a smart phone.
In addition, the power consumption of the devices is supplied by button batteries, so that the size of the power supply module can be reduced, and the use is convenient.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (7)
1. The utility model provides a carbon brush real-time status monitoring devices which characterized in that: the detection device comprises a detection unit and a coil spring for fixedly mounting the detection unit;
the pretightening force applying side of the coil spring is abutted against the carbon brush, and the coil spring rotates along with the motion of the carbon brush after the carbon brush is worn;
the detection unit comprises an accelerometer and a processing unit; the output end of the accelerometer is connected to the input end of the processing unit and used for detecting the rotation amount of the coil spring when the carbon brush is worn, and the processing unit determines the wear state of the carbon brush according to a detection signal output by the accelerometer.
2. The carbon brush real-time status monitoring device according to claim 1, characterized in that: the detection unit further comprises a mounting box, the mounting box is arranged in the hollow position of the coil spring, and the accelerometer and the processing unit are arranged in the mounting box.
3. The carbon brush real-time status monitoring device according to claim 2, characterized in that: the mounting box comprises a box body and a box cover;
the outer side wall of the bottom of the box body extends outwards along the radial direction to form a flange, the diameter of the box cover is larger than the outer diameter of the opening of the box body, mounting grooves are formed in the flange, the outer side wall of the box body and the edge of the box cover, and the inner side of the coil spring is embedded into the mounting grooves.
4. The carbon brush real-time status monitoring device according to claim 3, characterized in that: the box body lateral wall is provided with the via hole, the lateral wall of box body is provided with the embedded groove, embedded groove and via hole intercommunication, the inner tip bending type of spring coil becomes embedding portion, embedding portion extends to in the box body through the embedded groove.
5. The carbon brush real-time status monitoring device according to claim 4, characterized in that: the box cover is radially sunk from the edge to form a yielding groove, and the opening of the yielding groove is just opposite to the opening of the embedded groove when the box cover and the box body are covered.
6. The carbon brush real-time status monitoring device according to claim 1, characterized in that: the detection unit further comprises a temperature detection module, and the output end of the temperature detection module is connected with the input end of the processing unit.
7. The carbon brush real-time status monitoring device according to claim 6, characterized in that: the processing unit comprises a processing circuit, a wireless transmission module and an AD conversion module;
processing circuit passes through wireless transmission module and external monitoring equipment communication connection, processing circuit's temperature signal input part is connected in temperature detection module's output, processing circuit's acceleration signal input part is connected with AD conversion module's output, AD conversion module's input is connected with accelerometer's output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121957024.8U CN217032439U (en) | 2021-08-20 | 2021-08-20 | Carbon brush real-time status monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121957024.8U CN217032439U (en) | 2021-08-20 | 2021-08-20 | Carbon brush real-time status monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217032439U true CN217032439U (en) | 2022-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121957024.8U Active CN217032439U (en) | 2021-08-20 | 2021-08-20 | Carbon brush real-time status monitoring device |
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| CN (1) | CN217032439U (en) |
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2021
- 2021-08-20 CN CN202121957024.8U patent/CN217032439U/en active Active
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