Shaft current erosion prevention device for motor bearing
By installing grounding carbon brushes on the motor bearings to release shaft current, the corrosion and noise problems caused by shaft current of the motor bearings are solved, and the bearings are long-life and low-noise operation are achieved.
Patent Information
- Application Number
- CN202421058008.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-15
AI Technical Summary
During operation, the bearings are eroded and damaged due to shaft current, which leads to abnormal sounds, which has important protection problems.
Design a motor bearing anti-axis current corrosion device, which releases shaft current and reduces bearing corrosion by installing grounding carbon brushes on the motor bearing. The device includes a fixing mechanism, a guide shell, a downward mechanism and a wire mechanism. The carbon brush body is closely fitted with the motor shaft to realize the release of shaft current.
Effectively prevent the corrosion caused by shaft current of motor bearings, improve the service life of bearings, and reduce noise problems during motor operation.
Smart Images
Figure CN222464374U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of anti-corrosion equipment, and in particular relates to a device for preventing shaft current erosion of a motor bearing. Background Art
[0002] Motor shaft current refers to the current that occurs when an alternating current motor is running and that is generated due to the induced electromotive force in the motor windings. This current flows through the contact between the bearing and the base, eventually causing erosion and damage to the bearing.
[0003] Existing motors are often operated by frequency converters. When the motor is running, there will be shaft current in the motor shaft, which will cause electrical erosion of the bearing between the shaft and the motor housing, causing corrosion of the inner and outer rings of the bearing and the contact surface of the ball, which will cause abnormal noise when the motor is running. In the industrial field, preventing motor bearings from shaft current erosion is an important issue.
[0004] Therefore, in view of the deficiencies of the above-mentioned technologies, the present application proposes a motor bearing anti-shaft current erosion device that can effectively solve the above-mentioned technical problems, specifically by adding a grounding carbon brush to release the shaft current and reduce bearing erosion. Utility Model Content
[0005] The purpose of the utility model is to provide a motor bearing anti-shaft current erosion device in view of the deficiencies of the prior art, thereby effectively solving the problems existing in the prior art.
[0006] To achieve the above purpose, the specific technical solution of the utility model is as follows:
[0007] A device for preventing shaft current corrosion of motor bearings comprises a motor body and a frame, wherein a vertical fixing rod is fixedly mounted on the end face of the motor body, a fixing mechanism is arranged on the top face of the frame, guide shells are fixedly mounted on the left and right side walls of the frame respectively, a pressing mechanism is arranged on the top face of the guide shells, a carbon brush body is connected to the bottom of the pressing mechanism, and the fixing mechanism and the carbon brush body are connected via a wire mechanism.
[0008] As a further configuration of the above scheme, the fixing mechanism includes a threaded column, which is fixedly installed on the upper end of the frame, and a fixing clamp is connected to the threaded column. A first nut threadedly connected to the threaded column is provided above the fixing clamp, a connecting plate connected to the threaded column is provided above the first nut, and a second nut connected to the threaded column is provided above the connecting plate.
[0009] As a further configuration of the above scheme, the pressing mechanism includes a U-shaped frame, which is fixedly mounted on the upper end of the guide shell, a telescopic rod is fixedly mounted on the inner top of the U-shaped frame, a spring is provided on the telescopic rod, an L-shaped mounting plate is fixedly mounted on the lower ends of the telescopic rod and the spring, and a fixing bolt is threadedly connected to the front side wall of the L-shaped mounting plate.
[0010] As a further configuration of the above scheme, the wire mechanism includes an L-shaped terminal block, the L-shaped terminal block is connected to a fixing bolt, a wire body is fixedly installed on the L-shaped terminal block, one end of the wire body is fixedly installed with a straight-line terminal block, and the straight-line terminal block is slidably connected to a threaded column.
[0011] As a further configuration of the above scheme, a mounting hole is opened on the carbon brush body, the mounting hole is plug-connected with the fixing bolt, and the rear side wall of the carbon brush body is fitted with the front end face of the L-shaped wiring board.
[0012] As a further configuration of the above scheme, the top surface of the frame is provided with an arc groove opening upward, the middle part of the fixing clamp is arc-shaped, the arc groove is arranged corresponding to the fixing clamp, and during installation, the fixing rod is located in the arc groove and the surface is arranged in a fitting manner.
[0013] The working principle of the utility model is as follows: one end of the wire mechanism and the carbon brush body are fixed through the connection part of the pressing mechanism, and the fixing mechanism and the surface sleeve of the fixing rod are used to fix the frame at the end face of the motor body through the fixing mechanism, and the other end of the wire mechanism is fixedly installed on the surface of the fixing mechanism, and the end face of the carbon brush body and the rotating shaft of the motor body are tightly fitted through the pressing mechanism, and the carbon brush body is used to release the shaft current of the motor body, so as to prevent the bearing in the motor body from being corroded due to the shaft current and improve the service life of the bearing.
[0014] The utility model has the following beneficial effects:
[0015] By arranging a fixing mechanism on the frame, cooperating with a guide shell and a pressing mechanism, and connecting the carbon brush body and the fixing mechanism through a wire mechanism, the shaft current of the motor body can be released in time, preventing the bearings in the motor body from being corroded by the shaft current, and improving the service life of the bearings. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0017] Figure 2 It is a schematic diagram of the local structure of the utility model;
[0018] Figure 3 This utility model Figure 2Side view of
[0019] Figure 4 This utility model Figure 2 Partial side sectional view.
[0020] Figure numerals: 1, motor body; 11, fixing rod; 2, frame; 3, fixing mechanism; 301, threaded column; 302, fixing clamp; 303, first nut; 304, connecting plate; 305, second nut; 4, guide shell; 5, pressing mechanism; 501, U-shaped frame; 502, telescopic rod; 503, spring; 504, L-shaped mounting plate; 505, fixing bolt; 6, wire mechanism; 601, L-shaped terminal block; 602, wire body; 603, straight terminal block; 7, carbon brush body. DETAILED DESCRIPTION
[0021] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings 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 should fall within the scope of protection of the present application.
[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Figure 1-4 , and describes the application in detail with reference to embodiments.
[0023] The present embodiment discloses a motor bearing anti-axial current erosion device, comprising a motor body 1 and a frame 2, a fixing rod 11 is fixedly installed on the end face of the motor body 1, a fixing mechanism 3 is arranged on the top face of the frame 2, a guide shell 4 is fixedly installed on the left and right side walls of the frame 2, a pressing mechanism 5 is arranged on the top face of the guide shell 4, a wire mechanism 6 for conducting electricity is arranged inside the fixing mechanism 3 and the pressing mechanism 5, and a carbon brush body 7 is attached to the surface of the pressing mechanism 5 and the wire mechanism 6. One end of the wire mechanism 6 and the carbon brush body 7 are fixed by the connecting part of the pressing mechanism 5, the fixing mechanism 3 and the surface of the fixing rod 11 are sleeved, the frame 2 is fixed to the end face of the motor body 1 by the fixing mechanism 3, the other end of the wire mechanism 6 is fixedly installed on the surface of the fixing mechanism 3, the pressing mechanism 5 makes the end face of the carbon brush body 7 and the rotating shaft of the motor body 1 closely attached, and the carbon brush body 7 plays a role in releasing the shaft current of the motor body 1.
[0024] The fixing mechanism 3 includes a threaded column 301, the top surface of the frame 2 is fixedly installed with the threaded column 301, the surface of the threaded column 301 is movably sleeved and connected with a fixed clamping plate 302, the surface of the threaded column 301 is threadedly sleeved and connected with a first nut 303, the surface of the threaded column 301 is movably sleeved and connected with a connecting plate 304, the surface of the threaded column 301 is threadedly sleeved and connected with a second nut 305, and the top surface of the frame 2 and the fixed clamping plate 302 are sleeved with the fixing rod 11 on the surface of the motor body 1, and the first nut 303 is rotated to make the first nut 303 realize the close contact between the fixing clamping plate 302 and the surface of the frame 2 and the fixing rod 11, so that the frame 2 is fixed to the surface of the motor body 1.
[0025] The pressing mechanism 5 includes a U-shaped frame 501, the top surface of the guide shell 4 is fixedly installed with the U-shaped frame 501, the inner top of the U-shaped frame 501 is fixedly installed with a telescopic rod 502, and the surface of the telescopic rod 502 is sleeved with a spring 503, and the free ends of the telescopic rod 502 and the spring 503 are fixedly installed with an L-shaped mounting plate 504, and the front side wall of the L-shaped mounting plate 504 is threadedly inserted with a fixing bolt 505, and one end of the wire mechanism 6 and the carbon brush body 7 are fixed to the front side wall of the L-shaped mounting plate 504 through the fixing bolt 505. Under the elastic force of the telescopic rod 502 and the spring 503, the end face of the carbon brush body 7 is tightly fitted with the surface of the shaft of the motor body 1.
[0026] The wire mechanism 6 includes an L-shaped wiring board 601, the surface of the fixing bolt 505 is sleeved with the L-shaped wiring board 601, the top surface of the L-shaped wiring board 601 is fixedly installed with a wire body 602, and the free end of the wire body 602 is fixedly installed with a straight-line wiring board 603. The straight-line wiring board 603 and the surface of the threaded column 301 are movably plugged into each other. The L-shaped wiring board 601 and the surface of the L-shaped mounting plate 504 are fitted together by the fixing bolt 505, and the surface of the L-shaped wiring board 601 and the surface of the carbon brush body 7 are also fitted together. The straight-line wiring board 603 is sleeved on the surface of the threaded column 301, and the surface of the straight-line wiring board 603 and the surface of the connecting plate 304 are fixedly connected by the second nut 305.
[0027] A mounting hole is provided on the surface of the carbon brush body 7, and the fixing bolt 505 and the mounting hole on the surface of the carbon brush body 7 are plug-in arranged, and the rear side wall of the carbon brush body 7 is fitted with the front end face of the L-shaped terminal block 601, and the mounting hole on the surface of the carbon brush body 7 corresponds to the fixing bolt 505, so that the carbon brush body 7 and the L-shaped mounting plate 504 are fixed, and an arc groove is provided on the top surface of the frame 2, and the middle part of the fixing clamp 302 is arc-shaped, and they are arranged corresponding to each other, and when installed, they are fitted with the surface of the fixing rod 11.
[0028] The working process of the utility model is as follows: one end of the wire mechanism 6 and the carbon brush body 7 are fixed through the connecting part of the pressing mechanism 5, and the fixing mechanism 3 and the surface sleeve connection of the fixing rod 11 are used, and the frame 2 is fixed to the end face of the motor body 1 through the fixing mechanism 3, and the other end of the wire mechanism 6 is fixedly installed on the surface of the fixing mechanism 3, and the pressing mechanism 5 is used to make the end face of the carbon brush body 7 and the rotating shaft of the motor body 1 tightly fit, and the carbon brush body 7 is used to release the shaft current of the motor body 1, so as to prevent the bearing in the motor body 1 from being corroded due to the shaft current, and improve the service life of the bearing.
[0029] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.
[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A motor bearing anti-shaft current corrosion device, comprising a motor body and a frame, characterized in that: A vertical fixing rod is fixedly installed on the end surface of the motor body, a fixing mechanism is provided on the top surface of the frame, a guide shell is fixedly installed on the left and right side walls of the frame respectively, a pressing mechanism is provided on the top surface of the guide shell, a carbon brush body is connected to the bottom of the pressing mechanism, and the fixing mechanism and the carbon brush body are connected by a wire mechanism.
2. The motor bearing anti-shaft current erosion device according to claim 1, characterized in that: The fixing mechanism includes a threaded column, which is fixedly installed on the upper end of the frame. A fixing clamp is connected to the threaded column. A first nut threadedly connected to the threaded column is provided above the fixing clamp. A connecting plate connected to the threaded column is provided above the first nut. A second nut connected to the threaded column is provided above the connecting plate.
3. The motor bearing anti-shaft current erosion device according to claim 1, characterized in that: The pressing mechanism includes a U-shaped frame, which is fixedly mounted on the upper end of the guide shell, a telescopic rod is fixedly mounted on the inner top of the U-shaped frame, a spring is provided on the telescopic rod, an L-shaped mounting plate is fixedly mounted on the lower ends of the telescopic rod and the spring, and a fixing bolt is threadedly connected to the front side wall of the L-shaped mounting plate.
4. The motor bearing anti-shaft current erosion device according to claim 1, characterized in that: The wire mechanism includes an L-shaped wiring board, which is connected to a fixing bolt, a wire body is fixedly installed on the L-shaped wiring board, one end of the wire body is fixedly installed with a straight-line wiring board, and the straight-line wiring board is slidably connected to a threaded column.
5. The motor bearing anti-shaft current erosion device according to claim 2, characterized in that: The top surface of the frame is provided with an arc groove opening upward, the middle part of the fixing clamping plate is in an arc shape, and the arc groove is arranged corresponding to the fixing clamping plate.