Large steam turbine generator carbon brush grinding machine

Abstract

The utility model discloses a large steam turbine generator carbon brush grinding machine which comprises a machine frame, a grinding roller, a transmission device, an adjusting device, a brush box and a control device. The transmission device comprises a transmission assembly, the transmission assembly is arranged on one side of the rack, and the transmission assembly is connected with the grinding roller; the adjusting device comprises a first adjusting assembly and a second adjusting assembly, and the first adjusting assembly is arranged on one side of the rack in a sliding mode; the second adjusting assembly is rotatably arranged on the first adjusting assembly; the brush box is arranged on the top of the second adjusting assembly. The control device comprises a control assembly, and the control assembly is arranged on one side of the rack. Therefore, the contact area of the carbon brush and the collector ring is obviously increased, the radian of the surface of the carbon brush is perfectly matched with the radian of the diameter of the collector ring, the precision of manual grinding is greatly improved, and in addition, the technology also greatly enhances the safety when the carbon brush is replaced in the running state of the generator.

Description

Technical Field

[0001] This utility model relates to the technical field of power equipment maintenance, and in particular to a carbon brush grinding machine for large steam turbine generators. Background Technology

[0002] In the complex operating system of large steam turbine generators, carbon brushes play a crucial role. They are not only the bridge for rotor excitation current transmission but also a key factor in ensuring the generator's efficient and stable operation. The contact condition between the carbon brush and the slip ring directly affects the efficiency and stability of current transmission, thus impacting the performance of the entire power generation system. Traditional carbon brush grinding methods rely on manual operation, which has obvious limitations: First, manual grinding is extremely inefficient, making it difficult to meet the demands of modern industrial high-efficiency production; second, the subjectivity and inconsistency of manual operation make it difficult to achieve uniform and high-standard contact area and quality between the ground carbon brush surface and the slip ring. Design specifications typically require a contact area of ​​over 85% to ensure good current transmission and mechanical contact performance.

[0003] Insufficient contact area or uneven grinding quality will directly lead to increased resistance during current transmission, generating additional heat. This not only reduces generator efficiency but may also accelerate the wear of carbon brushes and slip rings, shortening their service life. More seriously, poor contact may cause electrical faults such as sparking and arcing, which can threaten the stable operation of the generator and, in some extreme cases, even cause generator shutdown, affecting the stability and safety of the entire power supply system.

[0004] Although some specialized mechanical grinding technologies have been developed in recent years to address the shortcomings of manual grinding, these technologies still face numerous challenges in practical applications. For example, in terms of grinding precision, mechanical grinding equipment requires more refined control mechanisms to ensure that each grinding operation achieves the ideal contact area and surface finish. Regarding convenience, making mechanical grinding equipment easier to operate and maintain, and adaptable to different models and specifications of carbon brushes, are also pressing issues that need to be addressed in current technological development. Therefore, while mechanical grinding technology offers some room for improvement, there is still significant room for enhancement in fully meeting the high standards required for grinding carbon brushes in large steam turbine generators. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in the related art.

[0006] Therefore, the purpose of this utility model is to propose a large-scale steam turbine generator carbon brush grinding machine, which significantly increases the contact area between the carbon brush and the slip ring, ensuring that the curvature of the carbon brush surface perfectly matches the curvature of the slip ring diameter, thereby greatly improving the accuracy of manual grinding. In addition, this technology also greatly enhances the safety when replacing carbon brushes while the generator is running.

[0007] To achieve the above objectives, this utility model proposes a large-scale steam turbine generator carbon brush grinding machine, comprising a frame, a grinding roller, a transmission device, an adjusting device, a brush box, and a control device. The grinding roller is rotatably mounted on the frame. The transmission device includes a transmission assembly disposed on one side of the frame and connected to the grinding roller. The adjusting device includes a first adjusting assembly and a second adjusting assembly. The first adjusting assembly is slidably mounted on one side of the frame, and the second adjusting assembly is rotatably mounted on the first adjusting assembly. The brush box is disposed on top of the second adjusting assembly. The control device includes a control assembly disposed on one side of the frame and electrically connected to the transmission assembly.

[0008] This utility model of a large steam turbine generator carbon brush grinding machine significantly increases the contact area between the carbon brush and the slip ring, ensuring a perfect match between the curvature of the carbon brush surface and the curvature of the slip ring diameter, thereby greatly improving the accuracy of manual grinding. In addition, this technology also greatly enhances the safety of replacing carbon brushes while the generator is running.

[0009] In addition, the large steam turbine generator carbon brush grinding machine proposed in the application may also have the following additional technical features:

[0010] Specifically, the transmission assembly includes a side plate, a bearing housing, and a connecting shaft. The side plate is disposed on one side of the frame; the bearing housing is disposed on the top of the side plate; the connecting shaft is rotatably disposed within the bearing housing, and one end of the connecting shaft is connected to the grinding roller, and the other end is connected to an external variable frequency motor.

[0011] Specifically, the first adjustment component includes a mounting bracket, two slide rails, a sliding plate, and two first adjustment holes. The mounting bracket is disposed on the upper side of one side of the frame; the two slide rails are disposed at both ends of the mounting bracket; the sliding plate is slidably disposed on the two slide rails; and the two sets of first adjustment holes are respectively disposed at both ends of the sliding plate, and the two sets of first adjustment holes are movably connected to the two slide rails respectively.

[0012] Specifically, the second adjustment component includes a rotating seat and two sets of second adjustment holes, wherein the rotating seat is rotatably disposed on the top of the sliding plate; the two sets of second adjustment holes are respectively disposed on the side walls at both ends of the sliding plate, and the two sets of second adjustment holes are respectively movably connected to the rotating seat.

[0013] Specifically, the control component includes a control panel and a switch. The control panel is disposed on one side wall of the frame and is electrically connected to an external variable frequency motor. The switch is disposed on one side of the control panel and is electrically connected to the control panel.

[0014] Specifically, the brush box is disposed on top of the rotating base.

[0015] The advantages of this invention compared to existing technologies are as follows:

[0016] (1) By precisely controlling the grinding process, the contact area between the carbon brush and the slip ring reaches or even exceeds the design requirements (e.g., more than 85%), thereby effectively reducing resistance, improving current transmission efficiency, ensuring long-term stable operation of the generator, and high-quality grinding can ensure good electrical contact, reduce the occurrence of electrical faults such as sparking and arcing, and further improve the safety and reliability of the generator.

[0017] (2) Automated or semi-automated grinding equipment can significantly reduce manual operation, reduce the physical labor intensity of operators, and improve work efficiency.

[0018] (3) This technology can flexibly adapt to the carbon brush grinding requirements of generators of different specifications and models, without the need to frequently change equipment or adjust process parameters, thus improving the versatility and utilization of the equipment.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0021] Figure 1 A perspective view of a large steam turbine generator carbon brush grinding machine according to an embodiment of the present invention;

[0022] Figure 2 A perspective view of a large steam turbine generator carbon brush grinding machine according to another embodiment of the present invention;

[0023] Figure 3A perspective view of a large steam turbine generator carbon brush grinding machine according to another embodiment of the present invention;

[0024] Figure 4 for Figure 2 A magnified structural diagram of part A in the diagram.

[0025] As shown in the figure: 1. Frame; 2. Grinding roller; 3. Transmission device; 4. Adjustment device; 5. Brush box; 6. Control device; 31. Transmission assembly; 41. First adjustment assembly; 42. Second adjustment assembly; 61. Control assembly; 311. Side plate; 312. Bearing seat; 313. Connecting shaft; 411. Mounting bracket; 412. Slide rail; 413. Sliding plate; 414. First adjustment hole; 421. Rotating seat; 422. Second adjustment hole; 611. Control panel; 612. On / off switch. Detailed Implementation

[0026] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Rather, the embodiments of the present invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0027] The large steam turbine generator carbon brush grinding machine of this utility model embodiment will be described below with reference to the accompanying drawings.

[0028] like Figures 1-4 As shown, the large steam turbine generator carbon brush grinding machine of this utility model embodiment may include a frame 1, a grinding roller 2, a transmission device 3, an adjustment device 4, a brush box 5, and a control device 6, wherein the grinding roller 2 is rotatably mounted on the frame 1.

[0029] As can be understood, frame 1 is the supporting structure of the entire grinder, used to fix and support all other components. It is typically made of strong and durable materials to ensure the stability and durability of the entire grinder.

[0030] The grinding roller 2 is a key component that is rotatably mounted on the frame 1. It achieves the grinding effect through contact and friction with the carbon brush. The surface of the grinding roller 2 is usually made of wear-resistant material to ensure that it maintains good grinding performance during long-term use.

[0031] The transmission device 3 may include a transmission assembly 31, wherein the transmission assembly 31 is disposed on one side of the frame 1 and is connected to the grinding roller 2.

[0032] It can be understood that the transmission device 3 is used to drive the rotation of the grinding roller 2. It mainly includes a transmission assembly 31, which is located on one side of the frame 1 and connected to the grinding roller 2. The transmission assembly 31 also consists of components such as a motor and a reducer. The power provided by the motor is reduced in speed by the reducer and then transmitted to the grinding roller 2, causing it to rotate at an appropriate speed.

[0033] The adjustment device 4 may include a first adjustment component 41 and a second adjustment component 42, wherein the first adjustment component 41 is slidably disposed on one side of the frame 1, and the second adjustment component 42 is rotatably disposed on the first adjustment component 41.

[0034] As can be understood, the adjusting device 4 is used to adjust the position and angle of the brush holder 5 to accommodate carbon brushes of different sizes and shapes. It mainly includes a first adjusting component 41 and a second adjusting component 42. The first adjusting component 41 is slidably mounted on one side of the frame 1 and is used to adjust the position of the brush holder 5 in the horizontal direction. The second adjusting component 42 is rotatably mounted on the first adjusting component 41 and is used to adjust the tilt angle of the brush holder 5. This design allows the grinder to flexibly adapt to the needs of various carbon brushes.

[0035] The brush box 5 is positioned on top of the second adjustment component 42.

[0036] It is understood that the brush holder 5 is positioned on top of the second adjusting component 42 to accommodate and secure the carbon brushes to be ground. The brush holder 5 should be designed to facilitate the insertion and removal of the carbon brushes and to maintain the stability and positional accuracy of the carbon brushes during the grinding process.

[0037] The control device 6 may include a control component 61, wherein the control component 61 is disposed on one side of the frame 1 and is electrically connected to the transmission component 31.

[0038] As can be understood, the control device 6 is used to control the operation of the entire grinding machine. It mainly includes a control component 61, which is located on one side of the frame 1 and electrically connected to the transmission component 31. Through the control component 61, the user can easily start, stop, and adjust the operating parameters of the grinding machine, such as the rotational speed of the grinding roller 2 and the grinding time. In addition, the control device 6 may also include other auxiliary functions, such as fault alarms and safety protection.

[0039] In one embodiment of this utility model, such as Figure 2 and Figure 3As shown, the transmission assembly 31 may include a side plate 311, a bearing seat 312 and a connecting shaft 313. The side plate 311 is disposed on one side of the frame 1, the bearing seat 312 is disposed on the top of the side plate 311, and the connecting shaft 313 is rotatably disposed in the bearing seat 312. One end of the connecting shaft 313 is connected to the grinding roller 2, and the other end is connected to an external variable frequency motor.

[0040] As can be understood, the side plate 311 is a supporting structure for the transmission assembly 31. It is located on one side of the frame 1 and serves to fix and support other components. The side plate 311 is typically made of a robust and durable material to ensure the stability and durability of the entire transmission assembly 31.

[0041] The bearing housing 312 is located on top of the side plate 311 and serves as a support component for the connecting shaft 313. The bearing housing 312 contains a bearing to support the rotation of the connecting shaft 313 and reduce friction and wear during rotation. The design of the bearing housing 312 should ensure that the connecting shaft 313 can rotate smoothly and steadily, while also being able to withstand certain radial and axial loads.

[0042] The connecting shaft 313 is the core component of the transmission assembly 31, and it is rotatably mounted within the bearing housing 312. One end of the connecting shaft 313 is connected to the grinding roller 2, driving the grinding roller 2 to rotate by transmitting torque. The other end of the connecting shaft 313 is connected to an external variable frequency motor, driving the connecting shaft 313 to rotate by the power provided by the variable frequency motor. The use of a variable frequency motor allows the grinder to adjust the speed of the grinding roller 2 as needed, thereby achieving a finer grinding effect.

[0043] At the end of the connecting shaft 313 that connects to the grinding roller 2, a key connection is typically used to ensure reliable and stable torque transmission between the connecting shaft 313 and the grinding roller 2. Meanwhile, the connection between the connecting shaft 313 and the variable frequency motor also typically uses couplings or pulleys and other transmission components to ensure smooth power transmission.

[0044] In summary, the transmission assembly 31, through the coordinated operation of three key components—side plate 311, bearing housing 312, and connecting shaft 313—transmits the power provided by the external variable frequency motor to the grinding roller 2, thereby driving the grinding roller 2 to rotate. This design allows the grinding machine to adjust the speed and grinding effect of the grinding roller 2 as needed to meet different grinding requirements.

[0045] In one embodiment of this utility model, such as Figure 4As shown, the first adjustment component 41 may include a mounting bracket 411, two slide rails 412, a sliding plate 413, and two first adjustment holes 414. The mounting bracket 411 is disposed on the upper side of one side of the frame 1, the two slide rails 412 are disposed at both ends of the mounting bracket 411, the sliding plate 413 is slidably disposed on the two slide rails 412, and the two sets of first adjustment holes 414 are respectively disposed at both ends of the sliding plate 413, and the two sets of first adjustment holes 414 are respectively movably connected to the two slide rails 412.

[0046] It can be understood that the mounting bracket 411 is a fixed part of the first adjustment assembly 41, and it is set on the upper side of one side of the frame 1.

[0047] The slide rails 412 are two parallel tracks, which are respectively located at both ends of the mounting bracket 411. The slide rails 412 provide a smooth and stable sliding track for the sliding plate 413, allowing the sliding plate 413 to move freely in the horizontal direction.

[0048] The sliding plate 413 is a movable part of the first adjustment assembly 41, and it is slidably mounted on two slide rails 412.

[0049] Two sets of first adjustment holes 414 are respectively provided at both ends of the sliding plate 413, and each set of first adjustment holes 414 is movably connected to a slide rail 412. The design of the first adjustment holes 414 should facilitate fixing the sliding plate 413 to different positions on the slide rail 412 using fasteners (such as bolts, nuts, etc.), thereby achieving precise adjustment of the brush box 5 in the horizontal direction. By adjusting the relative position between the first adjustment holes 414 and the slide rail 412, the horizontal position of the sliding plate 413 and the brush box 5 can be easily changed to accommodate carbon brushes of different sizes.

[0050] In summary, the first adjustment component 41, through the coordinated operation of the mounting bracket 411, slide rail 412, sliding plate 413, and first adjustment hole 414, achieves precise horizontal adjustment of the brush box 5. This design allows the grinder to flexibly adapt to carbon brushes of different sizes, improving grinding efficiency and precision.

[0051] In one embodiment of this utility model, such as Figure 4 As shown, the second adjustment component 42 may include a rotating seat 421 and two sets of second adjustment holes 422. The rotating seat 421 is rotatably disposed on the top of the sliding plate 413. The two sets of second adjustment holes 422 are respectively disposed on the side walls at both ends of the sliding plate 413 and are movably connected to the rotating seat 421. The brush box 5 is disposed on the top of the rotating seat 421.

[0052] It can be understood that the rotating seat 421 is the core component of the second adjustment assembly 42, and it is rotatably mounted on top of the sliding plate 413.

[0053] Two sets of second adjustment holes 422 are respectively provided on the side walls of both ends of the sliding plate 413, and each set of second adjustment holes 422 is movably connected to the rotating seat 421. The design of the second adjustment holes 422 should facilitate fixing the rotating seat 421 to different positions on the sliding plate 413 with fasteners (such as bolts, nuts, etc.), thereby changing the tilt angle of the rotating seat 421 and the brush box 5. By adjusting the relative position between the second adjustment holes 422 and the rotating seat 421, the tilt angle of the brush box 5 can be easily changed to adapt to different grinding requirements.

[0054] In actual operation, the user can loosen the fasteners to allow the rotating seat 421 to rotate freely on the sliding plate 413. Then, by rotating the rotating seat 421 to the desired tilt angle and using fasteners to fix the rotating seat 421 in the corresponding second adjustment hole 422 on the sliding plate 413, the tilt angle of the brush box 5 can be adjusted.

[0055] In summary, the second adjustment component 42, through the coordinated operation of the rotating base 421 and the two sets of second adjustment holes 422, achieves precise adjustment of the brush box 5 in terms of tilt angle. This design allows the grinder to flexibly adapt to different grinding needs, improving grinding efficiency and accuracy. At the same time, the second adjustment component 42 has a simple structure and is easy to operate, providing users with a more convenient and efficient grinding experience.

[0056] In one embodiment of this utility model, such as Figure 1 As shown, the control component 61 may include a control panel 611 and an on / off switch 612. The control panel 611 is disposed on one side wall of the frame 1 and is electrically connected to an external variable frequency motor. The on / off switch 612 is disposed on one side of the control panel 611 and is electrically connected to the control panel 611.

[0057] It is understood that the control panel 611 is the core component of the control assembly 61. It is located on one side wall of the frame 1 and is used to realize the functions of starting, stopping, speed adjustment, and monitoring of the grinder. The control panel 611 is electrically connected to the external variable frequency motor and achieves precise control of the working status of the grinder by controlling the operating parameters of the variable frequency motor (such as speed, rotation direction, power, etc.).

[0058] The switch 612 is a crucial component in the control assembly 61 used to control the start and stop of the grinder. It is located on one side of the control panel 611 for easy and quick operation by the user. The switch 612 is typically designed as a button or switch; the user can start or stop the grinder simply by pressing or toggling it. Simultaneously, the switch 612 is electrically connected to the control panel 611, and through the internal circuitry and logic of the control panel 611, it controls the on / off state of the grinder's power circuit.

[0059] Operating procedures for carbon brush grinding machines for large steam turbine generators:

[0060] I. Preparation Stage

[0061] 1. Inspection and Installation:

[0062] Ensure that all components (frame 1, grinding roller 2, transmission device 3, adjustment device 4, brush box 5, control device 6, etc.) are correctly installed and tightened.

[0063] Check whether the connecting shaft 313 in the transmission device 3 is securely connected to the grinding roller 2 and the external frequency conversion motor.

[0064] Confirm that the sliding plate 413 and rotating seat 421 in the adjustment device 4 can move freely, and that the fasteners of the first adjustment hole 414 and the second adjustment hole 422 are in a loose state for subsequent adjustment.

[0065] 2. Place the carbon brushes:

[0066] Place the carbon brush to be ground into brush holder 5, and ensure that the carbon brush is firmly fixed and will not shake or fall off during the grinding process.

[0067] II. Start-up and Adjustment Phase

[0068] 1. Connect the power supply:

[0069] Connect the control panel 611 of the control device 6 to an external power source and ensure proper grounding.

[0070] 2. Start the grinder:

[0071] Press the power switch 612 on the control panel 611 to start the grinding machine. At this time, the external frequency conversion motor starts working and drives the grinding roller 2 to rotate through the transmission device 3.

[0072] 3. Adjust the brush box position:

[0073] Based on the size and shape of the carbon brush, the first adjustment component 41 is used for adjustment. The position of the brush box 5 in the horizontal direction is adjusted by moving the sliding plate 413 on the slide rail 412 and selecting a suitable first adjustment hole 414 for fixing.

[0074] Then, adjust the tilt angle of the brush box 5 using the second adjustment component 42. Loosen the fasteners on the rotating seat 421, rotate the rotating seat 421 to the desired tilt angle, and secure it using the corresponding second adjustment hole 422.

[0075] 4. Adjust the grinding roller speed:

[0076] Adjust the speed of the external variable frequency motor using the relevant buttons or knobs on the control panel 611, thereby changing the rotation speed of the grinding roller 2. Select the appropriate speed according to the carbon brush material and grinding requirements.

[0077] III. Grinding Stage

[0078] 1. Begin grinding:

[0079] After confirming that all settings are correct, start the grinder. During rotation, the grinding roller 2 contacts the carbon brush and generates friction, thus performing grinding.

[0080] 2. Observation and Adjustment:

[0081] During the grinding process, carefully observe the grinding condition of the carbon brushes and the operating status of the grinder. If necessary, the grinder can be stopped at any time, and necessary adjustments can be made (such as adjusting the position of brush box 5, replacing grinding roller 2, etc.).

[0082] IV. Closure and Cleanup Phase

[0083] 1. Stop the grinder:

[0084] After grinding is complete, press the power switch 612 on the control panel 611 to stop the grinder.

[0085] 2. Remove the carbon brushes:

[0086] After turning off the power, wait for the grinder to completely stop running. Then, open brush box 5 and take out the ground carbon brushes.

[0087] 3. Cleaning and maintenance:

[0088] Clean the grinding machine of any residue, such as carbon brush debris and dust. At the same time, check the wear of each component and perform necessary maintenance (such as replacing severely worn parts and lubricating the transmission device).

[0089] It should be noted that the control method of this application can be automatically controlled by a controller. The control method of the controller can be implemented by simple programming by those skilled in the art, which is common knowledge in the field. Furthermore, this application is mainly used to protect mechanical structures, so the control method and circuit connection will not be explained in detail here.

[0090] In summary, the large steam turbine generator carbon brush grinding machine of this utility model significantly increases the contact area between the carbon brush and the slip ring, ensuring that the curvature of the carbon brush surface perfectly matches the curvature of the slip ring diameter, thereby greatly improving the accuracy of manual grinding. In addition, this technology also greatly enhances the safety when replacing carbon brushes while the generator is running.

[0091] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0092] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0093] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A large steam turbine generator carbon brush grinding machine, characterized in that, It includes a frame (1), grinding rollers (2), transmission device (3), adjustment device (4), brush box (5), and control device (6), wherein, The grinding roller (2) is rotatably mounted on the frame (1); The transmission device (3) includes a transmission assembly (31), wherein, The transmission assembly (31) is disposed on one side of the frame (1), and the transmission assembly (31) is connected to the grinding roller (2); The adjusting device (4) includes a first adjusting component (41) and a second adjusting component (42), wherein, The first adjustment component (41) is slidably disposed on one side of the frame (1); The second adjustment component (42) is rotatably disposed on the first adjustment component (41); The brush box (5) is disposed on top of the second adjustment component (42); The control device (6) includes a control component (61), wherein, The control component (61) is disposed on one side of the frame (1), and the control component (61) is electrically connected to the transmission component (31).

2. The large steam turbine generator carbon brush grinding machine according to claim 1, characterized in that, The transmission assembly (31) includes a side plate (311), a bearing housing (312), and a connecting shaft (313), wherein, The side plate (311) is disposed on one side of the frame (1); The bearing housing (312) is disposed on the top of the side plate (311); The connecting shaft (313) is rotatably disposed in the bearing seat (312), and one end of the connecting shaft (313) is connected to the grinding roller (2), and the other end is connected to an external variable frequency motor.

3. The large steam turbine generator carbon brush grinding machine according to claim 1, characterized in that, The first adjustment assembly (41) includes a mounting bracket (411), two slide rails (412), a sliding plate (413), and two first adjustment holes (414), wherein, The mounting bracket (411) is located on the upper side of one side of the frame (1); The two slide rails (412) are disposed at both ends of the mounting bracket (411); The sliding plate (413) is slidably disposed on the two sliding rails (412); Two sets of the first adjustment holes (414) are respectively disposed at both ends of the sliding plate (413), and the two sets of the first adjustment holes (414) are respectively movably connected to the two slide rails (412).

4. The large steam turbine generator carbon brush grinding machine according to claim 3, characterized in that, The second adjustment assembly (42) includes a rotating seat (421) and two sets of second adjustment holes (422), wherein, The rotating seat (421) is rotatably disposed on the top of the sliding plate (413); Two sets of the second adjustment holes (422) are respectively provided on the side walls at both ends of the sliding plate (413), and the two sets of the second adjustment holes (422) are respectively movably connected to the rotating seat (421).

5. The large steam turbine generator carbon brush grinding machine according to claim 2, characterized in that, The control component (61) includes a control panel (611) and a power switch (612), wherein, The control panel (611) is located on one side wall of the frame (1), and the control panel (611) is electrically connected to an external variable frequency motor. The switch (612) is located on one side of the control panel (611), and the switch (612) is electrically connected to the control panel (611).

6. The large steam turbine generator carbon brush grinding machine according to claim 4, characterized in that, The brush box (5) is located on top of the rotating seat (421).

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