Brush holder device for grounding carbon brush of main motor

Abstract

The utility model discloses a main motor grounding carbon brush holder device, which belongs to the technical field of motor auxiliary devices and comprises a fixed baffle arranged at the front end of a motor through a fastener, connecting angle steel is welded on the mounting side of the fixed baffle, and a semi-closed mounting space is enclosed by the fixed baffle and the connecting angle steel. A mounting frame is arranged in the mounting space and is connected with the connecting angle steel; a placement cavity is formed in the mounting frame, a carbon brush is arranged in the placement cavity, a constant pressure spring for applying pressure to the carbon brush is arranged in the mounting frame on the outer side of the placement cavity, a connecting bolt is arranged at the upper end part of the fixed baffle plate, and a brush braid of the carbon brush is connected with the connecting bolt. According to the utility model, the stability of the brush holder device can be enhanced, the possibility of loosening or damage caused by vibration or external force is reduced, the current conduction efficiency and the grounding effect are improved, the pressure can be automatically adjusted according to the wear condition of the carbon brush, and the service life of the carbon brush is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor auxiliary devices, and in particular relates to a grounding carbon brush holder device for a main motor. Background Art

[0002] Functions of grounding carbon brushes: 1. Ensure the safety of electrical equipment. Grounding carbon brushes can effectively prevent electrical equipment from becoming energized due to insulation failure or other reasons, thereby ensuring the safety of the equipment; 2. Prevent electromagnetic interference. When the motor is working, it will generate certain electromagnetic interference. The presence of grounding carbon brushes can effectively introduce the interference current into the ground, thereby ensuring the stability of the equipment; 3. Extend the life of the equipment. Grounding carbon brushes can introduce the static charge on the large shaft into the ground, which helps protect the motor from damage caused by static electricity accumulation, thereby extending the service life of the equipment.

[0003] High-speed wire mills currently roll high-speed wire rods with diameters ranging from 6.5 to 14 mm, placing extremely high demands on the overall rolling process. The main motor grounding carbon brushes are a crucial component of the electrical system. However, when rolling smaller wire rods, the increased electrical intensity of these mills leads to rapid wear of the main motor grounding carbon brushes, resulting in pitting and chipping on the contact surface. This results in a high breakage rate, creating gaps between the brushes and the rotor, preventing effective grounding. Summary of the Invention

[0004] In response to the problems existing in the prior art, the utility model provides a main motor grounding carbon brush holder device, which can enhance the stability of the brush holder device, reduce the possibility of loosening or damage due to vibration or external force, improve the current conduction efficiency and grounding effect, and can automatically adjust the pressure according to the wear of the carbon brush, thereby extending the service life of the carbon brush.

[0005] The utility model is implemented as follows: a main motor grounding carbon brush holder device includes a fixed baffle plate arranged at the front end of the motor by a fastener, a connecting angle steel is welded to the mounting side of the fixed baffle plate, the fixed baffle plate and the connecting angle steel enclose a semi-enclosed mounting space, a mounting frame is arranged in the mounting space, and the mounting frame is connected to the connecting angle steel;

[0006] A placement cavity is provided in the mounting frame, a carbon brush is provided in the placement cavity, a constant pressure spring for applying pressure to the carbon brush is provided in the mounting frame located outside the placement cavity, a connecting bolt is provided at the upper end of the fixed baffle, and the brush braid of the carbon brush is connected to the connecting bolt.

[0007] Furthermore, two carbon brushes are placed side by side within the mounting cavity of the mounting bracket, and constant-compression springs are installed within the mounting brackets on either side of the cavity. This parallel arrangement significantly improves electrical conductivity. If one carbon brush becomes inadequate due to wear or failure, the remaining brush can still effectively conduct current, ensuring a reliable grounding system for the motor.

[0008] Furthermore, the side walls of the mounting bracket are connected to the angle steel via fixing bolts.

[0009] Furthermore, the fixed baffle is a steel plate, and the specifications of the fixed baffle are 95mm×95mm×8mm.

[0010] Furthermore, the specification of the connecting angle steel is 40mm×4mm.

[0011] The advantages and technical effects of the present invention are as follows: Due to the adoption of the above technical solution, the fixed baffle and the connecting angle steel are fixed together by welding to form a semi-enclosed installation space. This structure not only enhances the stability of the brush holder device, but also makes the entire device more firmly installed on the front end of the motor, reducing the possibility of loosening or damage caused by vibration or external force; a placement cavity is provided in the mounting frame for accommodating carbon brushes. This design enables the carbon brushes to be stably placed in the brush holder device, avoiding the problem of poor contact or increased wear caused by shaking or misalignment; the constant pressure spring is used to apply constant pressure to the carbon brush, ensuring that the carbon brush always maintains close contact with the motor shaft, thereby improving the current conduction efficiency and grounding effect. At the same time, the constant pressure spring can also automatically adjust the pressure according to the wear of the carbon brush, thereby extending the service life of the carbon brush. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the utility model.

[0013] In the figure: 1. Fixed baffle; 2. Connecting angle steel; 3. Mounting bracket; 4. Carbon brush; 5. Constant pressure spring; 6. Connecting bolt; 7. Fixing bolt. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0015] It should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0016] like Figure 1 As shown, the present application provides a main motor grounding carbon brush holder device, including a fixed baffle 1 set at the front end of the motor by fasteners. Specifically, the fixed baffle 1 is a steel plate, and the specifications of the fixed baffle 1 are 95mm×95mm×8mm. A connecting angle steel 2 is welded to the installation side of the fixed baffle 1. Specifically, the specifications of the connecting angle steel 2 are 40mm×4mm. The fixed baffle 1 and the connecting angle steel 2 enclose a semi-enclosed installation space, and a mounting frame 3 is provided in the installation space, and the mounting frame 3 is connected to the connecting angle steel 2. Specifically, the side wall of the mounting frame 3 is connected to the angle steel by a fixing bolt 7.

[0017] A placement cavity is provided in the mounting frame 3, and a carbon brush 4 is provided in the placement cavity. A constant pressure spring 5 for applying pressure to the carbon brush 4 is provided in the mounting frame 3 located outside the placement cavity. A connecting bolt 6 is provided at the upper end of the fixed baffle 1, and the brush braid of the carbon brush 4 is connected to the connecting bolt 6.

[0018] Preferably, two carbon brushes 4 are arranged side by side within the cavity of the mounting bracket 3, and constant-compression springs 5 ​​are installed within the mounting bracket 3 on either side of the cavity. The parallel arrangement of two carbon brushes 4 significantly improves electrical conductivity. If one carbon brush 4 becomes inadequate due to wear or failure, the other carbon brush 4 can still effectively conduct current, thereby ensuring that the motor's grounding system remains reliable.

[0019] The advantages and technical effects of the present invention are as follows: Due to the adoption of the above technical solution, the fixed baffle 1 and the connecting angle steel 2 are fixed together by welding to form a semi-enclosed installation space. This structure not only enhances the stability of the brush holder device, but also enables the entire device to be more firmly installed on the front end of the motor, reducing the possibility of loosening or damage caused by vibration or external force; a placement cavity is provided in the mounting frame 3 for accommodating the carbon brush 4. This design enables the carbon brush 4 to be stably placed in the brush holder device, avoiding the problem of poor contact or increased wear caused by shaking or misalignment; the constant pressure spring 5 is used to apply constant pressure to the carbon brush 4, ensuring that the carbon brush 4 always maintains close contact with the motor shaft, thereby improving the current conduction efficiency and grounding effect. At the same time, the constant pressure spring 5 can also automatically adjust the pressure according to the wear of the carbon brush 4, thereby extending the service life of the carbon brush 4.

[0020] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A main motor grounding carbon brush holder device, characterized in that: The motor comprises a fixed baffle plate provided at the front end thereof by fasteners, a connecting angle steel being welded to the mounting side of the fixed baffle plate, the fixed baffle plate and the connecting angle steel forming a semi-enclosed mounting space, a mounting bracket being provided in the mounting space, and the mounting bracket being connected to the connecting angle steel; A placement cavity is provided in the mounting frame, a carbon brush is provided in the placement cavity, a constant pressure spring for applying pressure to the carbon brush is provided in the mounting frame located outside the placement cavity, a connecting bolt is provided at the upper end of the fixed baffle, and the brush braid of the carbon brush is connected to the connecting bolt.

2. The main motor grounding carbon brush holder device according to claim 1, characterized in that: Two carbon brushes are arranged in parallel in the placement cavity of the mounting frame, and constant pressure springs are respectively arranged in the mounting frames located on both sides of the placement cavity.

3. The main motor grounding carbon brush holder device according to claim 1, characterized in that: The side walls of the mounting frame are connected to the angle steels via fixing bolts.

4. The main motor grounding carbon brush holder device according to claim 1, characterized in that: The fixed baffle is a steel plate, and the specifications of the fixed baffle are 95mm×95mm×8mm.

5. The main motor grounding carbon brush holder device according to claim 1, characterized in that: The specification of the connecting angle steel is 40mm×4mm.

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