Electric brush-collector ring running-in device and method
By designing the brush-bustor ring running and combining device, using pressure sensors and visual processing technology, the problem of poor contact pressure control during the brush-bustor ring running and combining process in the prior art is solved, and a faster and more efficient running and combining process is achieved.
Patent Information
- Application Number
- CN202510081370.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-05-27
AI Technical Summary
The lack of contact pressure parameter control during the existing brush-combination process, resulting in the running and closing period being too long and the specific running and closing period cannot be clarified. The brushes need to be frequently stopped and removed to view the running and closing results, which increases the running and closing period.
A brush-communication ring running device is designed, including an insulating base, a multi-channel slip ring, an insulating bracket and a pressure testing mechanism. The contact pressure is detected through a pressure sensor, and the ratio of the stained area of the brush contact surface to the total area is obtained through the visual mechanism and the processor, and the contact pressure of the brush is adjusted to achieve a preset ratio.
Through this device and method, it is possible to quickly obtain the brush contact surface that meets the requirements within the preset running and closing cycle, reduce the running and closing cycle, improve the running and closing efficiency, and avoid frequent stop and disassembly operations.
Smart Images
Figure CN120049253A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of brush running - in, and particularly to a brush - slip ring running - in device and method. Background Art
[0002] The existing running - in process of the brush - slip ring generally includes an initial stage, a middle stage, and a late stage. In the initial stage, during contact wear, due to the uneven contact pressure between the brush and the slip ring, the cutting - in end wears rapidly, and the macroscopic contact area increases, causing the average contact stress to decrease rapidly; in the middle stage, the generated wear debris accumulates and compacts continuously, and the macroscopic contact area increases, causing the average contact stress to decrease rapidly; in the late stage, the increase amplitude of the macroscopic contact area further slows down, and the pressure and damage of the wear debris reach a dynamic balance, and the average contact stress remains stable.
[0003] First, during the existing running - in process of the brush - slip ring, there is a lack of contact pressure parameters between the brush and the conductive ring, and it is impossible to clarify the control of process parameters during the running - in process, resulting in a longer running - in cycle being required to reach the required stable running - in stage during the actual running - in process; second, during the running - in process of the brush - slip ring, because the specific running - in cycle cannot be clarified, during the running - in stage, it is necessary to arrange operators to continuously stop the running - in, disassemble the brush, and check whether the running - in result meets the requirements, which seriously increases the running - in cycle; finally, after the running - in process of the brush - slip ring, it is necessary to judge the contact area. It is only judged by the operator that the running - in is completed when the running - in area reaches 85% or more. This kind of judgment lacks a judgment basis. Therefore, during the running - in process of the brush - slip ring, a relatively long running - in cycle is required to reach the stable running - in stage where the nominal contact area reaches 85% or more. Summary of the Invention
[0004] To solve the technical problems in the background art, the present invention proposes a brush - slip ring running - in device and method.
[0005] In a first aspect, a brush - slip ring running - in device proposed by the present invention includes: an insulating base, a multi - channel slip ring, two insulating brackets, and a plurality of pressure testing mechanisms;
[0006] The multi - channel slip ring is vertically arranged on the insulating base, and the axis of the multi - channel slip ring is rotationally connected to the insulating base. A rotational driving mechanism is used to drive the multi - channel slip ring to rotate;
[0007] Two insulating brackets are respectively arranged on the insulating base on both sides of the multi - channel slip ring. A plurality of first brush mechanisms are detachably connected between the first ends of the two insulating brackets, and the plurality of first brush mechanisms are arranged at intervals from top to bottom; a plurality of second brush mechanisms are detachably connected between the second ends of the two insulating brackets, and the plurality of second brush mechanisms are arranged at intervals from top to bottom;
[0008] Both the first brush mechanism and the second brush mechanism include: a support plate, one or more brush fixing blocks, and one or more bolts. The two ends of the support plate are respectively detachably and fixedly connected to the first end or the second end of the two insulating brackets. One or more brush fixing blocks are sequentially fixed on the support plate along the length direction of the support plate. And a slot for inserting a brush is formed on the side wall of each brush fixing block facing the multi-channel slip ring. A push plate is slidably connected in the slot, and a spring is connected between the push plate and the bottom wall of the slot; a threaded through hole communicating with the slot is formed on the side wall of each brush fixing block facing away from the multi-channel slip ring. The front ends of one or more bolts pass through one or more threaded through holes correspondingly and extend into the slot to abut against the push plate.
[0009] Each pressure testing mechanism includes a plugging block and a pressure sensor. The plugging block has the same shape and size as the brush. The pressure sensor is embedded at one end of the plugging block for contacting the multi-channel slip ring. The pressure sensor is used to detect the contact pressure between the plugging block and the multi-channel slip ring.
[0010] Preferably, a colored coating is applied on the contact surface of the brush.
[0011] Preferably, it further includes a vision mechanism and a processor. The vision mechanism is used to obtain pictures of the contact surfaces of the brushes installed on each of the first brush mechanism and the second brush mechanism; the processor is used to process the pictures to obtain the ratio of the stained area of the contact surface of the brush to the total area of the contact surface.
[0012] In a second aspect, the present invention also proposes a running-in method for a brush-slip ring, which is applied to the brush-slip ring running-in device as described in any one of the first aspects, and includes:
[0013] In the testing stage, a pressure testing mechanism is installed in the slot of each first brush mechanism, and then a plurality of first brush mechanisms are sequentially fixed on the first ends of the two insulating brackets from top to bottom; by adjusting the bolts of each first brush mechanism, the pressure testing mechanism can measure the contact pressure, and the contact pressures of the plurality of pressure testing mechanisms in each first brush mechanism are the same. The contact pressures in the plurality of first brush mechanisms are distributed in a stepped manner from top to bottom; the first brush mechanism is disassembled, the positions of the bolts in each first brush mechanism are kept unchanged, and then brushes are used to replace all the pressure testing mechanisms, and the first brush mechanism is fixed again.
[0014] A pressure testing mechanism is installed in each slot of the second brush mechanism, and then multiple second brush mechanisms are detachably fixed to the second ends of two insulating brackets; by adjusting the bolts of each second brush mechanism, the pressure testing mechanism can measure the contact pressure, and make the contact pressures of the multiple pressure testing mechanisms in each second brush mechanism the same. The contact pressures in the multiple second brush mechanisms are distributed in a stepped manner from top to bottom, and the contact pressure of each second brush mechanism with the symmetric first brush structure is the same; disassemble the second brush mechanism, keep the positions of the bolts in each second brush unchanged, then use brushes to replace all the pressure testing mechanisms, and refix the second brush mechanism.
[0015] The rotation drive mechanism drives the multi-channel slip ring to rotate at a predetermined speed for running-in; when the running-in reaches the preset running-in period, the running-in ends.
[0016] Obtain the ratio of the stained area of the contact surface of each brush to the total area of the contact surface at the end of running-in; determine the largest ratio from the ratios of the stained areas of the contact surfaces of each brush to the total area of the contact surface; judge whether the ratio is greater than the preset ratio.
[0017] If so, adjust the positions of the bolts in the remaining first brush mechanisms and second brush mechanisms according to the contact pressure corresponding to the largest ratio, so that the contact pressure between the brushes on them and the multi-channel slip ring reaches the contact pressure corresponding to the largest ratio, and keep the positions of the bolts unchanged after adjustment and disassemble all the first brush mechanisms and second brush mechanisms.
[0018] In the formal running-in stage, insert new brushes into the slots of all the first brush mechanisms and second brush mechanisms and fix all the first brush mechanisms and second brush mechanisms respectively; then, drive the multi-channel slip ring to rotate by the rotation drive mechanism for running-in, and end the running-in when the preset running-in period is reached.
[0019] Preferably, the preset running-in period is 500 - 600h.
[0020] Preferably, the contact pressure corresponding to the largest ratio is 400 - 600g.
[0021] Preferably, obtaining the ratio of the stained area of the contact surface of each brush to the total area of the contact surface at the end of running-in specifically includes:
[0022] Obtain the pictures of the contact surfaces of each brush at the end of running-in.
[0023] For a single brush image, by extracting the edge contour and then fitting the minimum circumscribed rectangle of the contact surface of the single brush, and calculating the number of pixel points in the area to obtain the total area of the contact surface; by counting the number of pixel points in the stain area, the area of the stain area is calculated; according to the total area of the contact surface and the area of the stain area, the ratio of the stain area to the total area of the contact surface is calculated.
[0024] In the present invention, for the proposed brush - slip ring running - in device and method, before the brush undergoes running - in, first, through this brush - slip ring running - in device, the maximum ratio of the stain area to the total area of the contact surface can be obtained at a preset running - in period. During the subsequent running - in process of the brush, according to the contact pressure corresponding to the maximum ratio of the stain area to the total area of the contact surface, the contact pressure between the brush on it and the multi - channel slip ring is made to reach the contact pressure corresponding to the maximum ratio. After the adjustment is completed, the position of the bolt is kept unchanged, and a brush meeting the requirements can be quickly obtained during the subsequent running - in process. During the running - in process, it is not necessary to continuously stop the running - in and check whether the running - in result meets the requirements, thus improving the running - in efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a schematic structural diagram of a brush - slip ring running - in device in an embodiment proposed by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0026] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.
[0027] In a first aspect, referring to Figure 1 , a brush - slip ring running - in device proposed by the present invention includes: an insulating base 7, a multi - channel slip ring 2, two insulating brackets 1, and a plurality of pressure testing mechanisms;
[0028] The multi - channel slip ring 2 is vertically arranged on the insulating base 7, and the axis of the multi - channel slip ring 2 is rotatably connected to the insulating base 7. A rotation driving mechanism is used to drive the multi - channel slip ring 2 to rotate;
[0029] The two insulating brackets 1 are respectively arranged on the insulating base 7 on both sides of the multi - channel slip ring 2. A plurality of first brush mechanisms are detachably connected between the first ends of the two insulating brackets 1, and the plurality of first brush mechanisms are arranged at intervals from top to bottom; a plurality of second brush mechanisms are detachably connected between the second ends of the two insulating brackets 1, and the plurality of second brush mechanisms are arranged at intervals from top to bottom;
[0030] Both the first brush mechanism and the second brush mechanism include: a support plate 3, one or more brush fixing blocks 4, and one or more bolts 5. The two ends of the support plate 3 are respectively detachably and fixedly connected to the first end or the second end of the two insulating brackets 1. One or more brush fixing blocks 4 are sequentially fixed on the support plate 3 along the length direction of the support plate 3. And on the side wall of each brush fixing block 4 facing the multi-channel slip ring 2, there is a slot for inserting a brush. A push plate is slidably connected in the slot, and a spring is connected between the push plate and the bottom wall of the slot; on the side wall of each brush fixing block 4 facing away from the multi-channel slip ring 2, there is a threaded through hole communicating with the slot. The front ends of one or more bolts 5 pass through one or more threaded through holes one by one and extend into the slot to abut against the push plate;
[0031] Each pressure testing mechanism includes a plugging block 6 and a pressure sensor. The plugging block 6 has the same shape and size as the brush. The pressure sensor is embedded at one end of the plugging block 6 for contacting the multi-channel slip ring 2, and the pressure sensor is used to detect the contact pressure between the plugging block 6 and the multi-channel slip ring 2.
[0032] During specific implementation, a pressure testing mechanism is installed in the slot of each first brush mechanism, and then multiple first brush mechanisms are sequentially fixed on the first ends of the two insulating brackets 1 from top to bottom; by adjusting the bolts 5 of each first brush mechanism, the pressure testing mechanism can measure the contact pressure, and make the contact pressures of the multiple pressure testing mechanisms in each first brush mechanism the same. The contact pressures in the multiple first brush mechanisms are distributed in a stepped manner from top to bottom; disassemble the first brush mechanism, keep the positions of the bolts 5 in each first brush mechanism unchanged, and then use brushes to replace all the pressure testing mechanisms and re-fix the first brush mechanism;
[0033] A pressure testing mechanism is installed in the slot of each second brush mechanism, and then multiple second brush mechanisms are detachably fixed on the second ends of the two insulating brackets 1; by adjusting the bolts 5 of each second brush mechanism, the pressure testing mechanism can measure the contact pressure, and make the contact pressures of the multiple pressure testing mechanisms in each second brush mechanism the same. The contact pressures in the multiple second brush mechanisms are distributed in a stepped manner from top to bottom, and the contact pressure of each second brush mechanism is the same as that of the symmetric first brush structure; disassemble the second brush mechanism, keep the positions of the bolts 5 in each second brush unchanged, and then use brushes to replace all the pressure testing mechanisms and re-fix the second brush mechanism;
[0034] The rotation driving mechanism drives the multi-channel slip ring 2 to rotate at a predetermined speed for running-in; when the running-in reaches the preset running-in period, the running-in ends;
[0035] Obtain the ratio of the stained area to the total contact area of the contact surface of each brush when the running-in ends; determine the maximum ratio from the ratios of the stained areas to the total contact areas of the contact surfaces of each brush; judge whether the ratio is greater than the preset ratio;
[0036] If so, adjust the positions of the bolts 5 in the remaining first brush mechanisms and second brush mechanisms according to the contact pressure corresponding to the maximum ratio, so that the contact pressure reaches the contact pressure corresponding to the maximum ratio, and keep the positions of the bolts 5 unchanged after the adjustment;
[0037] Set it like this. Subsequently, in the formal running-in stage, insert new brushes into the slots of all the first brush mechanisms and second brush mechanisms, fix all the first brush mechanisms and second brush mechanisms respectively, and then drive the multi-channel slip ring 2 to rotate through the driving mechanism for running-in, and end the running-in when the preset running-in period is reached.
[0038] Before the brushes are formally run in, the present invention can obtain the maximum ratio of the stained area to the total contact area at the preset running-in period through the brush-slip ring running-in device. During the subsequent running-in process of the brushes, according to the contact pressure corresponding to the maximum ratio, adjust the positions of the bolts 5 in the remaining first brush mechanisms and second brush mechanisms, so that the contact pressure between the brushes on them and the multi-channel slip ring reaches the contact pressure corresponding to the maximum ratio, and keep the positions of the bolts 5 unchanged after the adjustment. It is possible to quickly obtain qualified brushes during the subsequent running-in process, and there is no need to continuously stop the running-in during the running-in process to check whether the running-in result meets the requirements, thus improving the running-in efficiency.
[0039] Among them, the contact surface of the brush in this embodiment specifically refers to the surface of the brush used to contact the corresponding slip ring on the multi-channel slip ring.
[0040] It should be noted that the position of the bolt 5 in this embodiment remains unchanged during the running-in process, and it cooperates with the spring and the push plate to limit the maximum contact force between the brush and the multi-channel slip ring 2. After the brush generates part of the toner, the spring is used to provide the elastic force for the brush to contact the multi-channel slip ring 2 through the push plate.
[0041] Specifically, the spring is sleeved on the bolt 5 to avoid affecting the expansion and contraction of the spring when adjusting the bolt 5.
[0042] In order to facilitate judging the ratio of the stained area to the total contact area of the contact surface of the brush during the running-in process or at the end of the running-in, in this embodiment, a colored coating is applied to the contact surface of the brush.
[0043] In order to quickly and accurately determine the ratio of the stained area of the contact surface of the brush to the total area of the contact surface, in this embodiment, a vision mechanism and a processor are further included. The vision mechanism is used to obtain pictures of the contact surfaces of the brushes installed on each first brush mechanism and second brush mechanism; the processor is used to process the pictures to obtain the ratio of the stained area of the contact surface of the brush to the total area of the contact surface.
[0044] Second, the present invention also proposes a running-in method for a brush-collector ring, which is applied to the brush-collector ring running-in device described in any one of the first aspects, and includes:
[0045] Install a pressure testing mechanism in the slot of each first brush mechanism, and then sequentially fix multiple first brush mechanisms on the first ends of two insulating brackets 1 from top to bottom; adjust the bolts 5 of each first brush mechanism so that the pressure testing mechanism can measure the contact pressure, and make the contact pressures of the multiple pressure testing mechanisms in each first brush mechanism the same. The contact pressures in the multiple first brush mechanisms are distributed in a stepped manner from top to bottom; disassemble the first brush mechanism, keep the positions of the bolts 5 in each first brush mechanism unchanged, and then use brushes to replace all the pressure testing mechanisms and re-fix the first brush mechanism;
[0046] Install a pressure testing mechanism in the slot of each second brush mechanism, and then detachably fix multiple second brush mechanisms on the second ends of two insulating brackets 1; adjust the bolts 5 of each second brush mechanism so that the pressure testing mechanism can measure the contact pressure, and make the contact pressures of the multiple pressure testing mechanisms in each second brush mechanism the same. The contact pressures in the multiple second brush mechanisms are distributed in a stepped manner from top to bottom, and the contact pressure of each second brush mechanism is the same as that of the symmetric first brush structure; disassemble the second brush mechanism, keep the positions of the bolts 5 in each second brush unchanged, and then use brushes to replace all the pressure testing mechanisms and re-fix the second brush mechanism;
[0047] The driving mechanism drives the multi-channel slip ring 2 to rotate at a predetermined speed for running-in; when the running-in reaches the preset running-in period, the running-in ends;
[0048] Obtain the ratio of the stained area of the contact surface of each brush to the total area of the contact surface at the end of the running-in; determine the largest ratio from the ratios of the stained areas of the contact surfaces of each brush to the total areas of the contact surfaces; judge whether the ratio is greater than the preset ratio;
[0049] If so, adjust the positions of the bolts 5 in the remaining first brush mechanisms and second brush mechanisms according to the contact pressure corresponding to the largest ratio, so that the contact pressure between the brushes on them and the multi-channel slip ring reaches the contact pressure corresponding to the largest ratio, and keep the positions of the bolts 5 unchanged after the adjustment;
[0050] During the formal running-in stage, new brushes are inserted into the slots of all the first brush mechanisms and the second brush mechanisms, and all the first brush mechanisms and the second brush mechanisms are respectively fixed; then, the multi-channel slip ring 2 is driven to rotate by the rotating drive mechanism for running-in, and the running-in ends when the preset running-in period is reached.
[0051] Among them, the first preset rotational speed is 8 r / min, and the preset ratio is 80%.
[0052] In a further embodiment, the preset running-in period is 500 - 600 h.
[0053] In a further embodiment, the contact pressure corresponding to the maximum ratio is 400 - 600 g.
[0054] Among them, obtaining the ratio of the stained area of the contact surface of each brush to the total area of the contact surface when the running-in ends specifically includes:
[0055] Obtaining pictures of the contact surfaces of each brush when the running-in ends;
[0056] For the picture of a single brush, by extracting the edge contour and then fitting the minimum circumscribed rectangle of the contact surface of the single brush, and calculating that the number of pixel points in the area is the total area A1 of the contact surface, and calculating the area A2 of the stained area by counting the number of pixel points in the stained area; according to the total area of the contact surface and the area of the stained area, calculating the ratio of the stained area to the total area of the contact surface; among them, the ratio of the stained area to the total area of the contact surface is (A2 / A1)×100%.
[0057] As mentioned above, the above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.
Claims
1. A brush-slip ring running-in device, characterized in that: include: An insulating base (7), a multi-channel slip ring (2), two insulating brackets (1) and a plurality of pressure testing mechanisms; The multi-channel slip ring (2) is vertically arranged on the insulating base (7) and the shaft of the multi-channel slip ring (2) is rotationally connected to the insulating base (7), and the rotation drive mechanism is used to drive the multi-channel slip ring (2) to rotate; Two insulating brackets (1) are respectively arranged on insulating bases (7) on both sides of the multi-channel slip ring (2); a plurality of first brush mechanisms are detachably connected between the first ends of the two insulating brackets (1), and the plurality of first brush mechanisms are sequentially spaced from top to bottom; a plurality of second brush mechanisms are detachably connected between the second ends of the two insulating brackets (1), and the plurality of second brush mechanisms are sequentially spaced from top to bottom; The first brush mechanism and the second brush mechanism both comprise: a support plate (3), one or more brush fixing blocks (4) and one or more bolts (5); the two ends of the support plate (3) are respectively detachably fixedly connected to the first end or the second end of the two insulating brackets (1); the one or more brush fixing blocks (4) are sequentially fixed to the support plate (3) along the length direction of the support plate (3); and each brush fixing block (4) is provided with a slot for inserting a brush on the side wall facing the multi-channel slip ring (2); a push plate is slidably connected in the slot, and a spring is connected between the push plate and the bottom wall of the slot; and each brush fixing block (4) is provided with a threaded through hole connected to the slot on the side wall facing away from the multi-channel slip ring (2); and the front ends of the one or more bolts (5) pass through the one or more threaded through holes one by one and extend into the slot to abut against the push plate; Each pressure testing mechanism comprises a plug-in block (6) and a pressure sensor. The plug-in block (6) has the same shape and size as the brush. The pressure sensor is embedded in one end of the plug-in block (6) for contacting the multi-channel slip ring (2). The pressure sensor is used to detect the contact pressure between the plug-in block (6) and the multi-channel slip ring (2).
2. The brush-slip ring running-in device according to claim 1, characterized in that: The contact surface of the brush is coated with colored paint.
3. The brush-slip ring running-in device according to claim 2, characterized in that: It also includes a visual mechanism and a processor. The visual mechanism is used to obtain images of the contact surfaces of the brushes installed on each of the first brush mechanism and the second brush mechanism; the processor is used to process the images to obtain the ratio of the stain area on the contact surface of the brush to the total contact surface area.
4. A brush-slip ring running-in method, applied to the brush-slip ring running-in device as claimed in any one of claims 1 to 3, comprising: During the testing phase, a pressure test mechanism is installed in a slot in each first brush mechanism, and then the plurality of first brush mechanisms are fixed in sequence from top to bottom on the first ends of the two insulating brackets (1); the pressure test mechanism can measure the contact pressure by adjusting the bolt (5) of each first brush mechanism, and the contact pressures of the plurality of pressure test mechanisms in each first brush mechanism are made the same, and the contact pressures in the plurality of first brush mechanisms are distributed in a stepped manner from top to bottom; the first brush mechanisms are disassembled, the bolts (5) in each first brush mechanism are kept in place, and then all the pressure test mechanisms are replaced with brushes, and the first brush mechanisms are re-fixed; A pressure test mechanism is installed in a slot in each second brush mechanism, and then the plurality of second brush mechanisms are detachably fixed to the second ends of the two insulating brackets (1); the pressure test mechanism can measure the contact pressure by adjusting the bolt (5) of each second brush mechanism, and the contact pressures of the plurality of pressure test mechanisms in each second brush mechanism are made the same, the contact pressures in the plurality of second brush mechanisms are distributed in a stepped manner from top to bottom, and the contact pressure of each second brush mechanism is the same as that of the symmetrical first brush structure; the second brush mechanism is disassembled, the bolts (5) in each second brush are kept in place, and then all the pressure test mechanisms are replaced by brushes, and the second brush mechanisms are re-fixed; The rotation driving mechanism drives the multi-channel slip ring (2) to rotate at a predetermined speed for running-in; when the running-in reaches a preset running-in cycle, the running-in is ended; Obtaining the ratio of the contamination area of the contact surface of each brush to the total contact surface area when the running-in is finished; determining the maximum ratio from the ratio of the contamination area of the contact surface of each brush to the total contact surface area; and determining whether the ratio is greater than a preset ratio; If so, the positions of the bolts (5) in the remaining first brush mechanisms and second brush mechanisms are adjusted according to the contact pressure corresponding to the maximum ratio, so that the contact pressure between the brushes thereon and the multi-channel slip ring reaches the contact pressure corresponding to the maximum ratio, and after the adjustment is completed, the positions of the bolts (5) are kept unchanged and all the first brush mechanisms and second brush mechanisms are disassembled; In the formal running-in stage, new brushes are inserted into the slots of all the first brush mechanisms and the second brush mechanisms and all the first brush mechanisms and the second brush mechanisms are fixed respectively; then, the multi-channel slip ring (2) is driven to rotate by a rotating drive mechanism to perform running-in, and the running-in is terminated when a preset running-in cycle is reached.
5. The brush-slip ring running-in method according to claim 4, characterized in that: The preset running-in period is 500-600 hours.
6. The brush-slip ring running-in method according to claim 5, characterized in that: The contact pressure corresponding to the maximum ratio is 400-600g.
7. The brush-slip ring running-in method according to claim 9, characterized in that: Obtain the ratio of the contamination area of the contact surface of each brush to the total contact surface area at the end of running-in, specifically including: Get a picture of the contact surface of each brush at the end of running-in; For the image of a single brush, the minimum circumscribed rectangle of the contact surface of a single brush is fitted by extracting the edge contour, and the number of pixels in the area is calculated as the total contact surface area; the area of the stain area is calculated by counting the number of pixels in the stain area; based on the total contact surface area and the area of the stain area, the ratio of the stain area to the total contact surface area is calculated.