A motor carbon brush wear monitoring device

Abstract

The utility model relates to motor technical field discloses a motor carbon brush wear monitoring devices, including the brush holder, the inside slide of brush holder and inserts the mounting bracket, the inside slide of mounting bracket and installs the carbon brush, the rear surface rotation of carbon brush and is installed the connecting nut, the inside of mounting bracket is provided with the auxiliary replacement mechanism, the auxiliary replacement mechanism includes the dismounting plate and fixed screw rod, the inside slide of mounting bracket and installs the dismounting plate, the rear surface lower end fixed mounting of dismounting plate has displacement sensor, through the setting of dismounting plate and fixed screw rod, makes the displacement sensor on the dismounting plate and installs carbon brush's wear degree to carry out the monitoring, the wear degree of carbon brush is monitored to the staff conveniently, need not frequently dismounting, and when needing to replace carbon brush, can install the mounting bracket, dismounting plate and carbon brush together and unload, the staff is replaced to the carbon brush after wearing conveniently, reduced the carbon brush replacement difficulty of staff, improved the work efficiency of this motor.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a motor carbon brush wear monitoring device. Background Technology

[0002] An electric motor, also known as a motor, is a device that converts electrical energy into mechanical energy. It is based on the principle of electromagnetic induction. When current passes through a coil, it generates a force in the magnetic field, causing the coil to rotate and thus driving mechanical equipment. There are many types of electric motors, including AC motors, DC motors, stepper motors, and servo motors, which are widely used in many fields such as industry, transportation, and households. Motor carbon brushes are an important electrical component, widely used in various motors and generators. They are mainly made of carbon graphite material and have high conductivity and wear resistance. The main function of motor carbon brushes is to transmit current from the power source to the motor rotor, and at the same time participate in the magnetic flux cutting between the motor rotor and the stator, thereby realizing the rotational motion of the motor.

[0003] Current motor carbon brushes require a certain clamping force between themselves and the rotor during use. However, as the motor is used, the carbon brushes gradually wear down, causing them to shorten. When the carbon brushes wear down to a certain extent, they need to be replaced. To measure the length of the carbon brushes to determine the degree of wear, the motor needs to be disassembled. Since the usage time and intensity of motors vary, this results in the need to disassemble the carbon brushes multiple times, affecting the motor's working efficiency. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a motor carbon brush wear monitoring device. It solves the problem that when measuring the length of carbon brushes to determine their wear level, the motor needs to be disassembled to measure the length of the carbon brushes. Since the usage time and intensity of motors vary, this requires multiple disassemblies of the carbon brushes, which affects the working efficiency of the motor.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a motor carbon brush wear monitoring device, including a brush holder, a mounting bracket slidably inserted inside the brush holder, a carbon brush slidably mounted inside the mounting bracket, and a connecting nut rotatably mounted on the rear surface of the carbon brush;

[0008] An auxiliary replacement mechanism is located inside the mounting bracket. The auxiliary replacement mechanism includes a disassembly plate and a fixing screw. The disassembly plate is slidably installed inside the mounting bracket. A displacement sensor is fixedly installed at the lower end of the rear surface of the disassembly plate. The monitoring end of the displacement sensor is connected to the rear end of the carbon brush. The fixing screw is rotatably installed on the front surface of the disassembly plate. The fixing screw is threadedly connected to the front end of the mounting bracket. The thread at the front end of the fixing screw extends through to the front surface of the mounting bracket. A spring is fixedly installed on the rear surface of the disassembly plate.

[0009] Preferably, the auxiliary replacement mechanism further includes a connecting bolt, which is fixedly installed at the rear end of the spring and threadedly connected to a connecting nut.

[0010] Preferably, the upper surface of the mounting bracket has a through hole, the upper end of which extends through to the upper surface of the brush holder.

[0011] Preferably, the disassembly plate has a convex limiting groove inside, and a convex limiting rod is rotatably installed inside the convex limiting groove. The convex limiting rod is fixedly connected to the fixing screw, and the front surface of the fixing screw has a hexagonal groove.

[0012] Preferably, mounting plates are fixedly installed on the upper surfaces of both the left and right ends of the brush holder, and connecting plates are fixedly installed on both the left and right ends of the mounting frame, with the connecting plates and mounting plates connected by bolts.

[0013] Preferably, a support rod is fixedly installed on the rear surface of the disassembly plate at the position corresponding to the spring, and the support rod is located inside the spring.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a motor carbon brush wear monitoring device, which has the following beneficial effects:

[0016] 1. This motor carbon brush wear monitoring device, through the setting of a disassembly plate and a fixing screw, allows the displacement sensor installed on the disassembly plate to monitor the wear degree of the carbon brushes. This makes it convenient for operators to monitor the wear degree of the carbon brushes without frequent disassembly. When the carbon brushes need to be replaced, the mounting bracket, disassembly plate, and carbon brushes can be removed together, making it convenient for operators to replace the worn carbon brushes. This reduces the difficulty of carbon brush replacement for operators and improves the working efficiency of the motor. Attached Figure Description

[0017] Figure 1 This is a top view schematic diagram of the overall structure of the motor carbon brush wear monitoring device of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal cross-sectional side view of the motor carbon brush wear monitoring device of this utility model;

[0019] Figure 3 This is a top-view cross-sectional view of the internal structure of the motor carbon brush wear monitoring device of this utility model;

[0020] Figure 4 This is a cross-sectional view of the mounting bracket of this utility model.

[0021] In the diagram: 1. Brush holder; 2. Mounting bracket; 3. Carbon brush; 4. Connecting nut; 5. Removal plate; 6. Fixing screw; 7. Displacement sensor; 8. Spring; 9. Connecting bolt; 10. Through hole; 11. Convex limiting groove; 12. Convex limiting rod; 13. Hexagonal groove; 14. Mounting plate; 15. Connecting plate; 16. Support rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a new technical solution: a motor carbon brush wear monitoring device, including a brush holder 1, a mounting bracket 2 slidably inserted inside the brush holder 1, a carbon brush 3 slidably installed inside the mounting bracket 2, and a connecting nut 4 rotatably installed on the rear surface of the carbon brush 3.

[0024] An auxiliary replacement mechanism is located inside the mounting bracket 2. The auxiliary replacement mechanism includes a disassembly plate 5 and a fixing screw 6. The disassembly plate 5 is slidably installed inside the mounting bracket 2. A displacement sensor 7 is fixedly installed at the lower end of the rear surface of the disassembly plate 5. The monitoring end of the displacement sensor 7 is connected to the rear end of the carbon brush 3. The fixing screw 6 is rotatably installed on the front surface of the disassembly plate 5. The fixing screw 6 is internally threaded to the front end of the mounting bracket 2. The front thread of the fixing screw 6 extends through to the front surface of the mounting bracket 2. A spring 8 is fixedly installed on the rear surface of the disassembly plate 5.

[0025] Furthermore, the auxiliary replacement mechanism also includes a connecting bolt 9, which is fixedly installed at the rear end of the spring 8 and is threadedly connected to the connecting nut 4.

[0026] Furthermore, by setting up the disassembly plate 5 and the fixing screw 6, the displacement sensor 7 installed on the disassembly plate 5 can monitor the wear degree of the carbon brush 3, making it convenient for the staff to monitor the wear degree of the carbon brush 3 without frequent disassembly. When the carbon brush 3 needs to be replaced, the mounting bracket 2, the disassembly plate 5 and the carbon brush 3 can be removed together, making it convenient for the staff to replace the worn carbon brush 3, reducing the difficulty of replacing the carbon brush 3 and improving the working efficiency of the motor.

[0027] Furthermore, a through hole 10 is provided on the upper surface of the mounting bracket 2, and the upper end of the through hole 10 extends through to the upper surface of the brush holder 1.

[0028] Furthermore, the disassembly plate 5 has a convex limiting groove 11 inside, and a convex limiting rod 12 is rotatably installed inside the convex limiting groove 11. The convex limiting rod 12 is fixedly connected to the fixing screw 6, and a hexagonal groove 13 is opened on the front surface of the fixing screw 6.

[0029] Furthermore, mounting plates 14 are fixedly installed on the upper surfaces of both the left and right ends of the brush holder 1, and connecting plates 15 are fixedly installed on both the left and right ends of the mounting bracket 2. The connecting plates 15 and the mounting plates 14 are connected by bolts.

[0030] Furthermore, a support rod 16 is fixedly installed on the rear surface of the disassembly plate 5 at the position corresponding to the spring 8, and the support rod 16 is located inside the spring 8.

[0031] Furthermore, when using this device, the brush holder 1 is installed on the motor for use. When the carbon brush 3 wears against the motor rotor, the spring 8 will push the carbon brush 3 away from the brush holder 1. The displacement sensor 7 monitors the wear degree of the carbon brush 3 by measuring its displacement. When the wear reaches a certain level, the bolts connecting the mounting plate 14 and the connecting plate 15 can be removed, thereby removing the mounting bracket 2 from the brush holder 1. Then, a hex wrench is used to rotate the fixing screw 6 through the hexagonal slot 13 to remove the fixing screw 6 from the mounting bracket 2. At this time, the disassembly plate 5 can be moved, and the carbon brush 3 and the disassembly plate 5 can be pulled out from the inside of the mounting bracket 2. The connecting nut 4 at the rear end of the carbon brush 3 is rotated to make the connecting nut 4 separate from the connecting bolt 9, and the carbon brush 3 is removed from the disassembly plate 5 and the spring 8 for replacement. After that, it is reinstalled, allowing the displacement sensor 7 to monitor the wear degree of the carbon brush 3. The setting of the disassembly plate 5 and the fixing screw 6 facilitates the replacement of the carbon brush 3 by the staff.

[0032] Structural Description: Brush Holder 1: The brush holder is the basic structure of the entire device, used to support and fix the mounting bracket 2, as well as other components of the entire carbon brush wear monitoring device;

[0033] Mounting bracket 2: The mounting bracket is a component inside the brush holder 1. It is slidably inserted into the brush holder 1 to fix and support the carbon brush 3, as well as to assist in the replacement mechanism.

[0034] Carbon brush 3: Carbon brushes are an important component in motors. They come into contact with the rotating parts of the motor and are used to transmit current. Carbon brushes will wear out during use and need to be replaced regularly.

[0035] Connecting nut 4: The connecting nut is fixed on the rear surface of the carbon brush 3 and is used to connect with the connecting bolt 9 in the auxiliary replacement mechanism, thereby connecting the carbon brush 3;

[0036] Removal plate 5: The removal plate 5 is slidably installed inside the mounting bracket 2 to facilitate the removal and replacement of carbon brush 3 when replacing carbon brushes;

[0037] Fixing screw 6: The fixing screw is rotatably mounted on the front surface of the disassembly plate 5 and is connected to the internal thread of the front end of the mounting bracket 2 to fix the position of the disassembly plate 5;

[0038] Displacement sensor 7: The displacement sensor is fixed to the lower end of the rear surface of the disassembly plate 5. Its monitoring end is connected to the rear end of the carbon brush 3 to monitor the wear degree of the carbon brush. The displacement sensor is existing technology, and the specific model is MKS1.

[0039] Spring 8: Spring 8 is fixed to the rear surface of the disassembly plate 5 to provide a repulsive force so that the carbon brush 3 contacts the surface of the motor rotor;

[0040] Connecting bolt 9: The connecting bolt is fixedly installed at the rear end of the spring 8 and threadedly connected to the connecting nut 4 for connecting the carbon brush 3;

[0041] Through hole 10: A through hole opened on the upper surface of the mounting bracket 2, the upper end of which extends through to the upper surface of the brush holder 1, for observing the internal condition;

[0042] Convex limiting groove 11: A groove inside the disassembly plate 5 for installing the convex limiting rod 12;

[0043] Convex limiting rod 12: Rotatably installed inside the convex limiting groove 11, and fixedly connected to the fixing screw 6, used to fix the disassembly plate 5;

[0044] Hexagonal slot 13: A slot opened on the front surface of the fixing screw 6 for rotating the fixing screw 6 using a hex wrench;

[0045] Mounting plate 14: Fixed to the upper surfaces of the left and right ends of the brush holder 1, used to connect with the connecting plate 15 by bolts, thereby fixing the mounting frame 2;

[0046] Connecting plate 15: Fixed to the left and right ends of the mounting bracket 2, and connected to the mounting plate 14 by bolts, used to fix the position of the mounting bracket 2;

[0047] Support rod 16: It is fixedly installed on the rear surface of the disassembly plate 5 at the position corresponding to the spring 8, located inside the spring 8, and is used to support the spring 8 and maintain its shape and function.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A motor carbon brush wear monitoring device, comprising a brush holder (1), a mounting frame (2) is slidingly inserted into the inside of the brush holder (1), and a carbon brush (3) is slidingly mounted in the inside of the mounting frame (2), characterized in that: A connecting nut (4) is rotatably mounted on the rear surface of the carbon brush (3). An auxiliary replacement mechanism is located inside the mounting frame (2). The auxiliary replacement mechanism includes a disassembly plate (5) and a fixing screw (6). The disassembly plate (5) is slidably installed inside the mounting frame (2). A displacement sensor (7) is fixedly installed at the lower end of the rear surface of the disassembly plate (5). The monitoring end of the displacement sensor (7) is connected to the rear end of the carbon brush (3). The fixing screw (6) is rotatably installed on the front surface of the disassembly plate (5). The fixing screw (6) is internally threaded to the front end of the mounting frame (2). The front thread of the fixing screw (6) extends through to the front surface of the mounting frame (2). A spring (8) is fixedly installed on the rear surface of the disassembly plate (5). The auxiliary replacement mechanism also includes a connecting bolt (9). The connecting bolt (9) is used to fix the... Installed at the rear end of the spring (8), the connecting bolt (9) is threadedly connected to the connecting nut (4). The upper surface of the mounting bracket (2) is provided with a through hole (10), the upper end of the through hole (10) extends through to the upper surface of the brush holder (1). The inside of the disassembly plate (5) is provided with a convex limiting groove (11). A convex limiting rod (12) is rotatably installed inside the convex limiting groove (11). The convex limiting rod (12) is fixedly connected to the fixing screw (6). The front surface of the fixing screw (6) is provided with a hexagonal groove (13). Mounting plates (14) are fixedly installed on the upper surfaces of both the left and right ends of the brush holder (1). Connecting plates (15) are fixedly installed on both the left and right ends of the mounting bracket (2). The connecting plate (15) and the mounting plate (14) are connected by bolts.

2. A motor carbon brush wear monitoring device according to claim 1, characterised in that: A support rod (16) is fixedly installed on the rear surface of the disassembly plate (5) at the position corresponding to the spring (8), and the support rod (16) is located inside the spring (8).

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