Insulating brush holder structure
By designing the insulating brush holder structure, the shaft current is blocked by using insulating plates and insulating tubes, the problem of electric corrosion of bearings is solved, the reliable operation of the motor is achieved, the operation and maintenance costs are reduced and the use rate of the motor is increased.
Patent Information
- Application Number
- CN202420873180.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-25
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-04-25
AI Technical Summary
Under some special operating conditions, the bearings of the motor are easily troubled by shaft current, which leads to electrical corrosion of the bearings, which in turn causes problems such as heating, abnormal temperatures, abnormal sounds, bearing locking or disintegration, increasing the operation and maintenance cost of the motor.
An insulated brush holder structure is designed, including a brush holder body, an insulating assembly and a fixing assembly. The insulated assembly blocks shaft current through an insulating plate and an insulating tube, and the fixing assembly fixes the insulated brush holder structure to the bearing cover through bolts, washers and nuts.
Effectively block the shaft current, prevent the current from flowing to the motor bearings, protect the bearings and motors, reduce operation and maintenance costs, and improve the use rate of the motor.
Smart Images
Figure CN222654934U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of generator structures, and in particular to an insulating brush holder structure. Background Art
[0002] The bearings of some motors used in special working conditions have always been troubled by shaft currents, such as bearing electrical corrosion. Because the bearing assembly structure is relatively complex, measures to block shaft currents are not easy to implement. At present, the capacity of motors is getting larger and larger, and the problem of shaft currents is becoming more and more prominent. The electrical corrosion of bearings caused by shaft currents can cause bearing heating, abnormal temperature, and abnormal sound in mild cases, and bearing locking or falling apart, triggering overcurrent protection shutdown, or even burning the motor in severe cases, which greatly increases the operation and maintenance costs of the motor and improves the utilization rate of the motor. Utility Model Content
[0003] Purpose of the utility model: In order to overcome the above-mentioned shortcomings, an insulating brush holder structure is provided to block the shaft current, prevent the current from flowing to the motor bearings, protect the bearings and the motor for reliable operation, thereby reducing operation and maintenance costs and improving the utilization rate of the motor.
[0004] Technical solution: To achieve the above purpose, the technical solution adopted in this application is:
[0005] An insulating brush holder structure is arranged on a bearing outer cover, and comprises a brush holder body, which comprises a first bent plate and a second bent plate, wherein the first bent plate and the second bent plate are both provided with through holes penetrating from top to bottom,
[0006] An insulation assembly for providing insulation support, comprising an insulation plate and an insulation tube, and,
[0007] A fixing assembly is used to fix the second bent plate to the bearing outer cover, and the first bent plate is fixedly connected to the second bent plate in cooperation with the insulating plate. The fixing assembly includes bolts, which pass through the through holes, are covered with insulating tubes, penetrate the first bent plate, the second bent plate and the insulating plate, and are screwed onto the bearing outer cover.
[0008] Optionally, the fixing assembly further includes a washer and a nut, and an insulating plate and a washer are sequentially arranged between the bolt, the nut, and the first bent plate and the second bent plate.
[0009] Optionally, the insulating board is made of epoxy glass cloth board.
[0010] Optionally, the first bent plate and the second bent plate are both made of stainless steel.
[0011] Optionally, the second bent plate is fixedly connected to the bearing outer cover, with a gap of 2 to 3 mm between the two.
[0012] The beneficial effects of the technical solution provided by this application include at least:
[0013] An insulating brush holder structure is provided, which includes a brush holder body, an insulating component and a fixing component. The insulating component includes an insulating plate and an insulating tube, which can block shaft current and prevent current from flowing to motor bearings, thereby protecting bearings and motors for reliable operation, thereby reducing operation and maintenance costs and improving the utilization rate of the motor. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0015] Figure 1 An overall structural schematic diagram of an insulating brush holder structure provided by an exemplary embodiment of the present application is shown;
[0016] Figure 2 A side view of an insulating brush holder structure provided by an exemplary embodiment of the present application is shown;
[0017] Description of reference numerals:
[0018] 1. Bearing; 2. First bent plate; 3. Second bent plate; 4. Bolt; 5. Insulating plate; 6. Insulating tube; 7. Washer; 8. Nut. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0020] The present application is further described below in conjunction with the accompanying drawings and embodiments.
[0021] Figure 1 The figure shows an overall structural diagram of an insulating brush holder structure provided by an exemplary embodiment of the present application. Figure 2 FIG. 2 shows a side view of an insulating brush holder structure provided by an exemplary embodiment of the present application. Figure 1 and Figure 2 As shown, an insulating brush holder structure is arranged between the bearing outer cover 1, which includes a brush holder body, an insulating component and a fixing component, which is used to block the shaft current, prevent the current from flowing to the motor bearing, protect the bearing and the motor to operate reliably, thereby reducing operation and maintenance costs and improving the utilization rate of the motor.
[0022] The brush holder body comprises a first bent plate 2 and a second bent plate 3. Both the first bent plate 2 and the second bent plate 3 are provided with through holes penetrating from top to bottom for installing bolts 4, washers 7 and nuts 8.
[0023] The insulation assembly is used to provide insulation support, and includes an insulation plate 5 and an insulation tube 6 .
[0024] A fixing assembly is used to fix the second bent plate 3 to the bearing outer cover 1, and the first bent plate 2 is fixedly connected to the second bent plate 3 in cooperation with the insulating plate 5. The fixing assembly includes a bolt 4, a washer 7 and a nut 8. The insulating plate 8 and the washer 7 are sequentially arranged between the bolt 4, the nut 8 and the first bent plate 2 and the second bent plate 3. The bolt 4 passes through the through hole, is put on the insulating tube 6, passes through the first bent plate 2, the second bent plate 3 and the insulating plate 5, and is screwed on the bearing outer cover 1.
[0025] In the embodiment of the present application, the material of the insulating board 5 is epoxy glass cloth board.
[0026] In the embodiment of the present application, the first bent plate 2 and the second bent plate 3 are both made of stainless steel.
[0027] In the embodiment of the present application, the length of the first bent plate 2 can be adjusted according to the actual axial situation while ensuring insulation. That is, bent plates of different lengths can be selected according to the length of the motor shaft and the brush model or customer requirements in order to cope with different situations.
[0028] In the embodiment of the present application, the second bent plate 3 can be fixed on the bearing outer cover according to actual conditions to ensure that a gap of 2 to 3 mm is left between the brush box and the coupling, which has the advantages of sophisticated structure, high reliability and strong versatility.
[0029] The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. An insulating brush holder structure, arranged on a bearing outer cover (1), characterized in that: include: The brush holder body comprises a first bent plate (2) and a second bent plate (3), wherein the first bent plate (2) and the second bent plate (3) are both provided with through holes penetrating from top to bottom. An insulation assembly for providing insulation support, comprising an insulation plate (5) and an insulation tube (6), and, A fixing assembly is used to fix the second bent plate (3) to the bearing outer cover (1); the first bent plate (2) cooperates with the insulating plate (5) to be fixedly connected to the second bent plate (3); the fixing assembly comprises a bolt (4); the bolt (4) passes through the through hole, is put on the insulating tube (6), passes through the first bent plate (2), the second bent plate (3) and the insulating plate (5), and is screwed onto the bearing outer cover (1).
2. The insulating brush holder structure according to claim 1, characterized in that: The fixing assembly further comprises a washer (7) and a nut (8), and an insulating plate (5) and a washer (7) are sequentially arranged between the bolt (4), the nut (8), the first bent plate (2) and the second bent plate (3).
3. The insulating brush holder structure according to claim 1 or 2, characterized in that: The material of the insulating board (5) is epoxy glass cloth board.
4. The insulating brush holder structure according to claim 1 or 2, characterized in that: The first bent plate (2) and the second bent plate (3) are both made of stainless steel.
5. The insulating brush holder structure according to claim 1 or 2, characterized in that: The second bent plate (3) is fixedly connected to the bearing outer cover (1), with a gap of 2 to 3 mm left between the two.