Abnormality detection system for double brushes

Abstract

The present application relates to an anomaly detection system for a double brush, comprising: a first trolley line section configured for electrical contact with a first brush of the double brush; a second trolley line section configured to be in electrical contact with a second brush of the double brushes; an electrical disconnect disposed between the first trolley line section and the second trolley line section and configured to disconnect an electrical connection between the first trolley line section and the second trolley line section; and a detection device electrically connected to the second trolley line section of the trolley line and configured to detect an abnormal state of the double brushes based on a circuit state of a series circuit from the first trolley line section, the first brush, the second brush, the second trolley line section to the detection device. The abnormal state of the electric brush can be efficiently and reliably identified through the abnormal detection system.

Description

Technical Field

[0001] The present application relates to the field of brush abnormality detection, and more specifically, to an abnormality detection system for dual brushes. Background Art

[0002] In automobile production workshops, slide devices are widely used to transport workpieces, such as car bodies or automobile interiors. The slide device can be electrically connected to the busbar via a brush (also called a carbon brush) so as to draw power from the busbar and supply power to the slide device in real time, thereby allowing the slide device to perform a shift operation under the process of the production line, effectively meeting ergonomics.

[0003] However, since the brushes need to slide on the busbar for a long time following the displacement of the slide device, the brushes are prone to failure due to long-term wear. Brush failures may include, for example, cracks in the brushes, breakages in the brushes, short circuits in the brushes, open circuits in the brushes, etc. These failures may cause abnormal conditions such as phase loss, undervoltage, and / or overvoltage in the power supply voltage, thereby affecting the operation of the slide device and the execution of the production process. In some cases, brush failures may also cause short circuits and sparks, etc. These problems are obviously undesirable.

[0004] In order to detect the abnormal state of the brush, maintenance personnel are generally required to perform regular offline inspections. Such regular offline inspections usually need to be performed on the brushes of all slide devices, so they are complicated and cumbersome. In addition, such regular offline inspections may also result in missed detections or false detections. Therefore, those skilled in the art are in urgent need of a detection system that can efficiently and reliably identify the abnormal state of the brush. Utility Model Content

[0005] The task of the present application is to provide an abnormality detection system for a double brush, which can overcome at least one defect in the prior art.

[0006] This object is achieved by an abnormality detection system for a double brush according to the present application, by means of which an abnormality detection system an abnormal state of the brush can be detected efficiently and reliably.

[0007] The present application relates to an abnormality detection system for a double brush, the abnormality detection system comprising: a first busbar section, the first busbar section being configured to be in electrical contact with a first brush in a double brush; a second busbar section, the second busbar section being configured to be in electrical contact with a second brush in a double brush; an electrical disconnect portion arranged between the first busbar section and the second busbar section, the electrical disconnect portion being configured to cut off the electrical connection between the first busbar section and the second busbar section; and a detection device, the detection device being electrically connected to the second busbar section of the busbar and being configured to detect an abnormal state of the double brush based on a circuit state of a series circuit from the first busbar section, the first brush, the second brush, the second busbar section to the detection device.

[0008] In some embodiments, the first brush and the second brush are provided to a skateboard device, and the first brush and the second brush are configured to supply power to the skateboard device via a distributor disposed between the first brush and the second brush.

[0009] In some embodiments, the anomaly detection system includes a circuit breaker mounted on the second busbar section.

[0010] In some embodiments, the anomaly detection system is integrated into the busbar track and is configured as an anomaly diagnosis area.

[0011] In some embodiments, the electrical disconnect is configured as an insulating medium disconnect.

[0012] In some embodiments, the insulating medium disconnect portion is configured as an air dielectric disconnect portion and / or a ceramic dielectric disconnect portion.

[0013] In some embodiments, the detection device includes a main detection circuit, which is configured to be electrically connected to each phase line of the second busbar section, wherein a first contactor is provided in the first phase line of the main detection circuit, a second contactor is provided in the second phase line of the main detection circuit, and a third contactor is provided in the third phase line of the main detection circuit.

[0014] In some embodiments, the coil connection of the first contactor is connected to the first phase line of the main detection circuit, the coil connection of the second contactor is connected to the second phase line of the main detection circuit, and the coil connection of the third contactor is connected to the third phase line of the main detection circuit.

[0015] In some embodiments, the detection device includes a first alarm circuit, which includes a power supply end connected in series, a normally open contact of a first contactor, a normally open contact of a second contactor, a normally open contact of a third contactor, and a phase loss notification device.

[0016] In some embodiments, the detection device includes: a first auxiliary detection circuit connected to the first phase line, in which the normally open contact of the first contactor and the coil terminal of the fourth contactor are connected in series; a second auxiliary detection circuit connected to the second phase line, in which the normally open contact of the second contactor and the coil terminal of the fifth contactor are connected in series; and / or a third auxiliary detection circuit connected to the third phase line, in which the normally open contact of the third contactor and the coil terminal of the sixth contactor are connected in series.

[0017] In some embodiments, the detection device includes: a second alarm circuit, the second alarm circuit includes a power supply terminal connected in series, a normally open contact of a fourth contactor, and a first phase line fault notification device; a third alarm circuit, the third alarm circuit includes a power supply terminal connected in series, a normally open contact of a fifth contactor, and a second phase line fault notification device; and / or a fourth alarm circuit, the fourth alarm circuit includes a power supply terminal connected in series, a normally open contact of a sixth contactor, and a third phase line fault notification device.

[0018] In some embodiments, the detection device includes a voltage detection module provided to the main detection circuit, and the voltage detection module is configured to detect electrical parameters that can characterize the voltage state of the main detection circuit for identifying overvoltage anomalies and / or undervoltage anomalies.

[0019] In some embodiments, the abnormality detection system includes a control device configured to be communicatively connected with a phase loss notification device, a first phase line fault notification device, a second phase line fault notification device, and / or a third phase line fault notification device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present application will be described in more detail below with reference to the accompanying drawings and by means of specific embodiments. The schematic drawings are briefly described as follows:

[0021] Figure 1 A schematic diagram of a power supply system for supplying power to a skateboard device based on a dual brush configuration is shown;

[0022] Figure 2 A schematic diagram of an abnormality detection system for dual brushes according to some embodiments of the present application is shown;

[0023] Figure 3 Shows Figure 2 An exemplary circuit diagram of a detection device in an abnormality detection system. DETAILED DESCRIPTION

[0024] The present application will be described below with reference to the accompanying drawings, wherein the accompanying drawings illustrate several embodiments of the present application. However, it should be understood that the present application can be presented in a variety of different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present application more complete and fully explain the scope of protection of the present application to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0025] It should be understood that the terms used herein are only used to describe specific embodiments and are not intended to limit the scope of the present application. All terms (including technical terms and scientific terms) used herein have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of simplicity and / or clarity, well-known functions or structures may not be described in detail.

[0026] As used herein, spatial relational terms such as "upper," "lower," "left," "right," "front," "rear," "higher," "lower," etc. may describe the relationship of one feature to another feature in the accompanying drawings. It should be understood that the spatial relational terms encompass different orientations of the device in use or operation in addition to the orientation shown in the accompanying drawings. For example, features previously described as being "below" other features may now be described as being "above" the other features when the device in the accompanying drawings is turned over. The device may also be otherwise oriented (rotated 90 degrees or in other orientations), and the relative spatial relationships will be interpreted accordingly.

[0027] Herein, the term "A or B" includes "A and B" and "A or B" rather than exclusively including only "A" or only "B", unless specifically stated otherwise.

[0028] In this document, the terms "illustrative" or "exemplary" mean "used as an example, instance or illustration" rather than as a "model" to be exactly copied. Any implementation described exemplarily herein is not necessarily to be interpreted as preferred or advantageous over other implementations. Moreover, the present application is not limited by any stated or implied theory given in the above technical field, background technology, utility model content or specific implementation.

[0029] As used herein, the term "substantially" is intended to include any minor variations due to design or manufacturing defects, tolerances of devices or components, environmental influences, and / or other factors.

[0030] In addition, the terms "first", "second" and the like may also be used herein for reference purposes only, and thus are not intended to be limiting. For example, the terms "first", "second" and other such numerical terms referring to structures or elements do not imply a sequence or order unless the context clearly indicates otherwise.

[0031] In order to improve the power supply stability of the skateboard device 50, a power supply system based on a double brush configuration is generally used to supply power to the skateboard device 50. Figure 1 FIG. 2 shows a schematic diagram of the power supply system. Figure 1 As shown, the slide device 50 can be equipped with a double brush, namely a first brush 21 and a second brush 22. When the slide device 50 is in operation, the first brush 21 and the second brush 22 can each draw power from the busbar track 10 in a parallel connection manner and supply power to the slide device 50. The parallel connection configuration based on the double brushes can improve the stability of the system operation. When one of the double brushes is abnormal or fails, the other brush in the double brush can still maintain power supply. In particular, the first brush and the second brush are configured to supply power to the slide device via the distributor arranged between the first brush and the second brush. For clarity, only a partial length of the busbar track 10 is shown here. It should be understood that the current embodiment is shown by taking a three-phase four-wire power supply system as an example, but other forms of power supply systems are not excluded.

[0032] Although the power supply system based on the dual-brush configuration can improve the operating stability of the system, the dual-brush configuration increases the number of brushes and thus increases the workload for brush abnormality detection. Those skilled in the art are in urgent need of an abnormality detection system that can efficiently and reliably identify dual-brush power supplies.

[0033] Figure 2 FIG. 1 is a schematic diagram of an abnormality detection system 100 for a dual brush according to some embodiments of the present application. Figure 2 As shown, the abnormality detection system 100 may include: a first busbar section 31, the first busbar section is configured to be in electrical contact with the first brush 21 in the double brush; a second busbar section 32, the second busbar section is configured to be in electrical contact with the second brush 22 in the double brush; an electrical disconnection portion 33 provided between the first busbar section and the second busbar section, the electrical disconnection portion being configured to cut off the electrical connection between the first busbar section and the second busbar section; and a detection device 40, the detection device being electrically connected to the second busbar section of the busbar and configured to detect an abnormal state of the double brush based on a circuit state of a series circuit from the first busbar section 31, the first brush 21, the second brush 22, the second busbar section 32 to the detection device 40. The circuit state of the series circuit may include, but is not limited to, the conduction, disconnection, overvoltage and / or undervoltage of the corresponding phase line of the circuit.

[0034] like Figure 2As shown, an electrical disconnection portion 33 is provided between the first busbar section and the second busbar section, and the electrical disconnection portion is configured to cut off the electrical connection between the first busbar section and the second busbar section. Figure 1 The busbar track 10 shown is cut into at least two electrically isolated first busbar sections 31 and second busbar sections 32. That is, current cannot flow directly from the first busbar section 31 to the second busbar section 32.

[0035] Particularly advantageously, the abnormality detection system according to some embodiments of the present application can be integrated into the busbar track 10 and configured as an abnormality diagnosis area.

[0036] like Figure 2 As shown, the electrical disconnect 33 can be configured as an insulating medium disconnect. In some embodiments, an air medium disconnect and / or a ceramic medium disconnect can be provided between the first busbar section 31 and the second busbar section 32 of the busbar 10, for example.

[0037] In the abnormal detection state, the first brush 21 in the double brush can be configured to be electrically connected to the first busbar section 31 on the corresponding phase line, and the second brush 22 in the double brush can be configured to be electrically connected to the second busbar section 32 on the corresponding phase line. Thus, the first busbar section 31 can be connected to the second busbar section 32 in series via the first brush 21 and the second brush 22.

[0038] In order to realize double brush abnormality detection, the detection device 40 can be electrically connected to the second busbar section 32 and configured to detect the abnormal state of the double brush based on the circuit state of the series circuit from the first busbar section 31, the first brush 21, the second brush 22, the second busbar section 32 to the detection device 40. Thus, instead of the double brush parallel connection configuration in the operating state, the first brush 21 and the second brush 22 are in the double brush series connection configuration in the abnormality detection state, which means that the first busbar section 31, the first brush 21, the distributor 30, the second brush 22, the second busbar section 32 and the detection device 40 can form a series circuit for abnormality detection.

[0039] In some embodiments, the abnormality detection system 100 may include a circuit breaker 60 installed on the second trolley bar section 32 of the trolley bar 10 to further ensure electrical disconnection between the first trolley bar section 31 and the second trolley bar section 32 when performing abnormality detection.

[0040] Next reference Figure 3 , an exemplary circuit diagram of a detection device 40 of an abnormality detection system 100 for a dual brush according to some embodiments of the present application is introduced in detail.

[0041] like Figure 3 As shown, the detection device 40 for detecting the abnormal state of the double brush may include a main detection circuit, which may be configured to be electrically connected to the second busbar section 32. That is, the phase lines of the main detection circuit may be electrically connected to the phase lines of the second busbar section 32 of the busbar 10, respectively. In the case of a three-phase four-wire power supply system, the phase lines of the main detection circuit may be electrically connected to the phase lines L1, L2, L3, and N of the second busbar section 32 of the busbar 10, respectively. A first contactor KA1 or a first AC contactor may be provided in the first phase line L1 of the main detection circuit, a second contactor KA2 or a second AC contactor may be provided in the second phase line L2 of the main detection circuit, and a third contactor KA3 or a third AC contactor may be provided in the third phase line L3 of the main detection circuit. More specifically, the coil connector of the first contactor KA1 can be connected to the first phase line L1 of the main detection circuit, the coil connector of the second contactor KA2 can be connected to the second phase line L2 of the main detection circuit, and the coil connector of the third contactor KA3 can be connected to the third phase line L3 of the main detection circuit. Thus, when the corresponding phase line is energized, the coil connector of the corresponding contactor can be energized to generate an electromagnetic effect, so as to trigger the switching operation of each contact of the contactor based on the electromagnetic effect, that is, the normally open contact is switched to the conducting state and the normally closed contact is switched to the disconnected state.

[0042] In some embodiments, the detection device 40 may include a first alarm circuit provided to the main detection circuit, and the first alarm circuit may include a power supply terminal S1 (e.g., a power supply) connected in series, normally open contacts 21, 24 of a first contactor KA1, normally open contacts 21, 24 of a second contactor KA2, normally open contacts 21, 24 of a third contactor KA3, and a phase loss notification device R. Under normal operating conditions, the closing of the normally open contacts of the contactors can be triggered based on the electromagnetic effect of the activated coil. Therefore, under normal operating conditions, the normally open contacts 21, 24 of the three contactors in series in the first alarm circuit should be in a closed state. However, when there is a phase loss abnormality in the double brushes, the coil of at least one contactor in each phase line cannot operate normally, and thus remains disconnected between the corresponding normally open contacts 21, 24. Therefore, when the first alarm circuit is disconnected, it can be found that there is a phase loss abnormality in at least one phase line.

[0043] In some embodiments, the phase loss notification device R can be configured as an alarm prompt device, such as an acoustic alarm prompt device and / or an optical alarm prompt device. In some embodiments, the phase loss notification device R can be configured as a communication module to transmit the detected phase loss anomaly to the upper control device 70.

[0044] Additionally or alternatively, as shown by the dotted ellipse box, the detection device 40 may include: a first auxiliary detection circuit connected to the first phase line L1, in which the normally open contacts 11, 14 (or another normally open contact) of the first contactor KA1 and the coil connection of the fourth contactor KA4 may be connected in series, for example; a second auxiliary detection circuit connected to the second phase line L2, in which the normally open contacts 11, 14 (or another normally open contact) of the second contactor KA2 and the coil connection of the fifth contactor KA5 may be connected in series, for example; and / or a third auxiliary detection circuit connected to the third phase line L3, in which the normally open contacts 11, 14 (or another normally open contact) of the third contactor KA3 and the coil connection of the sixth contactor KA6 may be connected in series, for example.

[0045] The detection device 40 may include: a second alarm circuit configured for the first auxiliary detection circuit, a third alarm circuit configured for the second auxiliary detection circuit, and / or a fourth alarm circuit configured for the third auxiliary detection circuit. The second alarm circuit may include a power supply terminal S2 (e.g., a power supply) connected in series, normally open contacts 11, 14 of a fourth contactor KA4, and a first phase line fault notification device R1. The third alarm circuit may include a power supply terminal S3 connected in series, normally open contacts 11, 14 of a fifth contactor KA5, and a second phase line fault notification device R2. The fourth alarm circuit may include a power supply terminal S4 connected in series, normally open contacts 11, 14 of a sixth contactor KA6, and a third phase line fault notification device R3.

[0046] Under normal operating conditions, when the corresponding phase lines L1, L2, and L3 are energized and thus the corresponding auxiliary detection circuits are energized, the normally open contacts 11, 14 of the first contactor KA1, the normally open contacts 11, 14 of the second contactor KA2, and the normally open contacts 11, 14 of the third contactor KA3 can be switched to the on state, and the coil connectors of the fourth contactor KA4, the coil connectors of the fifth contactor KA5, and the coil connectors of the sixth contactor KA6 can be energized, thereby prompting the normally open contacts 11, 14 of the fourth contactor KA4, the normally open contacts 11, 14 of the fifth contactor KA5, and the normally open contacts 11, 14 of the sixth contactor KA6 to switch to the on state.

[0047] However, when a specific phase line fault occurs in the double brush, the coil of the contactor in the corresponding auxiliary detection circuit cannot be energized, so that the normally open contacts 11, 14 in the corresponding alarm circuit remain disconnected. Therefore, when the second alarm circuit, the third alarm circuit and / or the fourth alarm circuit are disconnected, the specific phase line fault can be found.

[0048] In some embodiments, the corresponding phase line fault notification device can be configured as an alarm prompt device, such as an acoustic alarm prompt device and / or an optical alarm prompt device. In some embodiments, the corresponding phase line fault notification device can be configured as a communication module to transmit the identified specific phase line fault to the upper control device 70. Thus, the specific phase line fault of the brush can be accurately identified, which is helpful to help maintenance personnel quickly find the source of the fault and improve the efficiency of fault diagnosis and maintenance.

[0049] Additionally or alternatively, the detection device 40 may include a voltage detection module 41 provided to the main detection circuit, and the voltage detection module 41 is configured to detect electrical parameters that can characterize the voltage state of the main detection circuit, so as to identify overvoltage anomalies and / or undervoltage anomalies. In some embodiments, the voltage detection module 41 can be configured as a so-called shunt. It should be understood that the voltage detection module 41 can be configured as other types of detection units. For example, the voltage detection module 41 can be configured as a Hall sensor, a cable sensor, a capacitive sensor, etc.

[0050] Additionally or alternatively, the abnormality detection system 100 may include a control device 70 as a host computer, such as a PLC. The control device 70 may be configured to communicate with the phase loss notification device R, the first phase line fault notification device R1, the second phase line fault notification device R2, and / or the third phase line fault notification device R3. Thus, the control device 70 can obtain the abnormal state of the dual brushes in real time, and thereby control the operation of the corresponding slide device 50 and / or notify the maintenance personnel of the corresponding information.

[0051] Although the present application has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present application. Any technical personnel in this field can use the methods and technical contents disclosed above to make possible changes and modifications to the technical solution of the present application without departing from the spirit and scope of the present application. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are within the protection scope of the technical solution of the present application.

Claims

1. An abnormality detection system for a double brush, characterized in that: The anomaly detection system (100) comprises: A first busbar section (31) configured to be in electrical contact with a first brush (21) in a double brush; A second busbar section (32) configured to be in electrical contact with a second brush (22) in a double brush; An electrical disconnecting portion (33) disposed between the first busbar section and the second busbar section, the electrical disconnecting portion being configured to cut off the electrical connection between the first busbar section and the second busbar section; and A detection device (40) is electrically connected to the second busbar section of the busbar and is configured to detect an abnormal state of the double brush based on a circuit state of a series circuit from the first busbar section (31), the first brush (21), the second brush (22), the second busbar section (32) to the detection device (40).

2. The abnormality detection system according to claim 1, characterized in that: The first brush and the second brush are assigned to a slide device (50), and the first brush and the second brush are configured to supply power to the slide device via a distributor arranged between the first brush and the second brush.

3. The abnormality detection system according to claim 1, characterized in that: The abnormality detection system includes a circuit breaker installed on the second busbar section.

4. The abnormality detection system according to any one of claims 1 to 3, characterized in that: The anomaly detection system is integrated into the busbar track and is designed as an anomaly diagnosis area.

5. The abnormality detection system according to any one of claims 1 to 3, characterized in that: The electrical disconnect portion (33) is configured as an insulating medium disconnect portion.

6. The abnormality detection system according to claim 5, characterized in that: The insulating medium disconnect portion is configured as an air dielectric disconnect portion and / or a ceramic dielectric disconnect portion.

7. The abnormality detection system according to any one of claims 1 to 3, characterized in that: The detection device includes a main detection circuit, which is configured to be electrically connected to each phase line of the second busbar section, wherein a first contactor is arranged in the first phase line of the main detection circuit, a second contactor is arranged in the second phase line of the main detection circuit, and a third contactor is arranged in the third phase line of the main detection circuit.

8. The abnormality detection system according to claim 7, characterized in that: The coil connection of the first contactor is connected to the first phase of the main detection circuit, the coil connection of the second contactor is connected to the second phase of the main detection circuit, and the coil connection of the third contactor is connected to the third phase of the main detection circuit.

9. The abnormality detection system according to claim 8, characterized in that: The detection device includes a first alarm circuit, which includes a power supply terminal connected in series, a normally open contact of a first contactor, a normally open contact of a second contactor, a normally open contact of a third contactor, and a phase loss notification device.

10. The abnormality detection system according to claim 9, characterized in that: The detection device comprises: A first auxiliary detection circuit connected to the first phase line, wherein a normally open contact of the first contactor and a coil connector of the fourth contactor are connected in series; a second auxiliary detection circuit connected to the second phase line, in which a normally open contact of the second contactor and a coil connector of the fifth contactor are connected in series; and / or A third auxiliary detection circuit is bridged to the third phase line, wherein a normally open contact of a third contactor and a coil terminal of a sixth contactor are connected in series.

11. The abnormality detection system according to claim 10, characterized in that: The detection device comprises: a second alarm circuit, the second alarm circuit comprising a power supply terminal, a normally open contact of a fourth contactor and a first phase line fault notification device connected in series; A third alarm circuit, the third alarm circuit comprising a power supply terminal, a normally open contact of a fifth contactor and a second phase line fault notification device connected in series; and / or A fourth alarm circuit includes a power supply terminal, a normally open contact of a sixth contactor, and a third phase line fault notification device connected in series.

12. The abnormality detection system according to claim 7, characterized in that: The detection device comprises a voltage detection module (41) provided to a main detection circuit, wherein the voltage detection module is configured to detect an electrical parameter capable of characterizing a voltage state of the main detection circuit, so as to identify an overvoltage anomaly and / or an undervoltage anomaly.

13. The abnormality detection system according to claim 11, characterized in that: The abnormality detection system includes a control device (70) configured to be communicatively connected to a phase loss notification device, a first phase line fault notification device, a second phase line fault notification device, and / or a third phase line fault notification device.

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