A switch cabinet copper bus polishing device

Abstract

The utility model discloses a switchgear copper busbar polishing device, including cabinet, conveyer belt assembly, two groups of polishing wheel subassembly and controller. Copper busbar is placed in the positioning groove of belt, and when the conveyer belt is forwardly conveyed, the polishing motor drives the meshing of driving gear and driven gear, transmits power to vertical shaft and suspension bracket, drives the sand cloth wheel to rotate around the vertical shaft and high -speed rotation itself through transmission shaft, short shaft and cross axle simultaneously, realizes rough polishing operation, and after the conveyer belt reverses and switches to cotton cloth wheel, completes fine polishing operation. The sand cloth wheel and cotton cloth wheel can be switched quickly through the rotation of switching frame controlled by the air cylinder, and the double -sided polishing can be completed through the operation of turning over. The dust cover covers the power transmission system, guarantees long -term stable operation. The device can remove copper busbar surface burrs and tiny protrusions efficiently and uniformly, improves surface smoothness and uniformity, reduces the risk of sharp point discharge, supports batch automatic operation, and significantly improves production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of power equipment manufacturing, specifically to a copper busbar polishing device for switchgear. Background Technology

[0002] Switchgear is a critical piece of equipment in power transmission and distribution systems. Its internal conductive busbars are typically made of highly conductive copper bars. To ensure the reliability of electrical connections and eliminate safety hazards, the surface smoothness of the busbars is subject to extremely high requirements during processing and installation. Especially after drilling, cutting, and other processing steps, burrs, sharp edges, unevenness, and even tiny metal particles may remain on the surface of the copper bars and the edges of the holes. These surface defects can significantly alter the uniform distribution of the electric field, causing the electric field strength to concentrate abnormally at sharp points, which can easily trigger the phenomenon of "point discharge."

[0003] In existing technologies, polishing and deburring of copper busbars in switchgear mainly rely on manual operation or single-function semi-automatic equipment. Manual operation highly depends on the operator's experience and skill, resulting in inconsistent polishing results and defects such as missed or over-polishing. It is also difficult to precisely control surface roughness, leaving microscopic sharp points on the copper strip surface and hole edges unremoved, posing a safety hazard of tip discharge. Furthermore, manual operation is inefficient, unable to meet the needs of batch processing, and restricts production cycle time.

[0004] Furthermore, while some existing semi-automated polishing equipment reduces labor intensity to some extent, its functions are usually quite limited, with most equipment only capable of single-pass, unidirectional polishing operations. To complete two processes with different requirements—rough polishing and fine polishing—it is necessary to change polishing tools midway or transfer the workpiece to different equipment for secondary processing. This process is cumbersome, offers limited efficiency gains, and still makes it difficult to achieve efficient and continuous batch processing. Utility Model Content

[0005] The purpose of this utility model is to provide a copper busbar polishing device for switchgear, which aims to improve the problems of low efficiency, uneven surface treatment quality and potential tip discharge hazards in existing copper busbar polishing operations.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A copper busbar polishing device for switch cabinet includes a cabinet with a feed inlet on one side. A support frame is installed inside the cabinet, and a conveyor belt assembly and a conveyor drive motor are installed on the support frame. The conveyor drive motor is used to drive the belt of the conveyor belt assembly to run in both directions. One end of the conveyor belt assembly extends outward from the feed inlet.

[0008] The cabinet is equipped with at least one set of copper busbar polishing mechanisms. Each copper busbar polishing mechanism includes a switching frame and a switching drive. The switching frame is rotatably mounted on the inner wall of the cabinet via a rotating shaft. Two sets of polishing wheel assemblies are arranged perpendicularly to each other on the switching frame. Each polishing wheel assembly includes a polishing drive component and a suspension frame. The suspension frame is a channel steel structure, with a vertical shaft fixed to the top and its end rotatably mounted on the switching frame via a bearing. At least one set of polishing wheel assemblies is located at the lower part of the suspension frame. Each polishing wheel assembly includes a horizontal shaft rotatably mounted on the suspension frame, with polishing wheels mounted on the horizontal shaft. The polishing drive component is used to drive the vertical shaft and polishing wheels to rotate.

[0009] The switching drive is used to drive the switching frame to rotate 90° around the axis of the rotating shaft to achieve the switching of the two polishing wheel assemblies;

[0010] One set of polishing wheel assemblies has abrasive cloth polishing wheels, while the other set of polishing wheel assemblies has cotton cloth polishing wheels. The cabinet is also equipped with a controller, which is connected to the conveyor drive motor, the switching drive unit, and all polishing drive components.

[0011] Furthermore, the switching drive component is a cylinder, and a lever arm extends and is fixed on the switching frame. The cylinder body is installed in the cabinet by a hinge, and the end of the cylinder push rod is hinged to the end of the lever arm.

[0012] Furthermore, the lower part of the suspension frame is provided with two sets of polishing wheel assemblies, and mounting arm plates are welded to both ends of the lower part of the suspension frame, with the two sets of polishing wheel assemblies located between the two mounting arm plates.

[0013] Furthermore, the polishing drive assembly includes a polishing motor, a drive shaft, and two short shafts. The drive shaft and the two short shafts are located on one side of the suspension frame. The drive shaft is arranged vertically in the middle of the side of the suspension frame, and the two short shafts are arranged horizontally on the side of the mounting arm plate and symmetrically about the drive shaft. The drive shaft and the two short shafts are rotatably mounted on the side of the suspension frame and the side of the mounting arm plate respectively through bearings and bearing seats.

[0014] The upper end of the vertical shaft is provided with a driven gear, the polishing motor is mounted on the switching frame, the main shaft of the polishing motor is provided with a driving gear, the upper end of the transmission shaft is provided with a transmission gear, and both the driving gear and the transmission gear mesh with the driven gear; the lower end of the transmission shaft is provided with a first bevel gear, one end of each of the two short shafts is provided with a second bevel gear, the first bevel gear meshes with the second bevel gear at the ends of the two short shafts, and the other end of each of the two short shafts is provided with a third bevel gear;

[0015] The two horizontal shafts at the lower part of the suspension frame are each equipped with a fourth bevel gear, and the third bevel gears at the ends of the two short shafts mesh with the fourth bevel gears at the ends of the two horizontal shafts respectively.

[0016] Furthermore, the polishing drive assembly also includes a dust cover, which is disposed on the side of the suspension bracket, and the drive gear, driven gear, transmission gear, transmission shaft, short shaft and fourth bevel gear are all located inside the dust cover.

[0017] Furthermore, the conveyor belt assembly has several positioning grooves arranged side by side, the size of which is adapted to the copper busbar of the switch cabinet, and the depth of which is less than the thickness of the copper busbar of the switch cabinet.

[0018] Furthermore, the cabinet is equipped with an access panel, and an access door is installed at the access panel.

[0019] Furthermore, the switchgear copper busbar polishing device also includes a dust removal system, which includes a negative pressure box, a dust collection hood, and a dust removal fan. The negative pressure box is fixed on the support frame and is located between the belts of the conveyor belt assembly and corresponds vertically to the copper busbar polishing mechanism. The upper surface of the negative pressure box is evenly distributed with several negative pressure suction holes, and the side wall of the negative pressure box is connected to the dust removal fan through a negative pressure pipe. The belt of the conveyor belt assembly is evenly distributed with several through holes.

[0020] The dust collection hood is installed at the top inside the cabinet and is connected to the dust collection fan through a dust collection pipe.

[0021] Furthermore, the belt of the conveyor belt assembly is elastic.

[0022] By adopting the above technical solution, this utility model has the following advantages compared with the prior art:

[0023] (1) This utility model constrains the copper busbar by positioning groove and combines it with elastic conveyor belt to ensure the stability of the busbar during the polishing process, so that the sanding wheel and cotton wheel can act evenly on the surface and edge of the busbar, realize continuous rough polishing and fine polishing, thereby effectively removing burrs, sharp edges and small protrusions, improving the surface smoothness and uniformity of the busbar, and reducing the risk of tip discharge.

[0024] (2) This utility model uses multi-stage gear transmission to ensure that multiple polishing wheels rotate synchronously, the polishing force is stable and uniform, avoids excessive local polishing or omissions, and improves the consistency of processing.

[0025] (3) The cylinder controls the rotation of the switching frame to achieve rapid switching between the abrasive wheel and the cotton wheel; combined with the forward and reverse rotation of the conveyor belt and the flipping operation, double-sided rough polishing and fine polishing can be completed continuously without manual adjustment of the feed amount, realizing batch polishing operations and improving production efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the copper busbar polishing device for switchgear described in this utility model;

[0027] Figure 2This is a cross-sectional view of the copper busbar located inside the belt of the conveyor belt assembly;

[0028] Figure 3 This is a diagram of the internal structure of the server rack;

[0029] Figure 4 A schematic diagram of the copper busbar polishing mechanism;

[0030] Figure 5 This is a schematic diagram of the suspension frame structure;

[0031] Figure 6 This is a schematic diagram of the dust removal system.

[0032] Explanation of reference numerals in the attached drawings: 1. Cabinet; 2. Feed inlet; 3. Support frame; 4. Conveyor belt assembly; 7. Positioning groove; 8. Copper busbar polishing mechanism; 9. Switching frame; 10. Switching drive component; 11. Rotating shaft; 14. Suspension frame; 15. Vertical shaft; 16. Abrasive wheel; 17. Cotton cloth wheel; 18. Mounting arm plate; 19. Horizontal shaft; 20. Polishing wheel; 21. Controller; 22. Lever arm; 25. Polishing motor; 26. Drive shaft; 27. Short shaft; 30. Driven gear; 31. Driving gear; 32. Transmission gear; 33. First bevel gear; 34. Second bevel gear; 35. Third bevel gear; 36. Fourth bevel gear; 37. Dust cover; 39. Inspection door; 41. Negative pressure box; 42. Dust collection hood; 43. Dust removal fan; 45. Negative pressure suction hole; 46. Negative pressure pipe; 47. Dust removal pipeline; 100. Copper busbar. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0034] Additionally, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are all based on the orientation or positional relationship shown in the accompanying drawings. They are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element of this utility model must have a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] When an element is referred to as being "fixed to," "set on," or "contained on" another element, it can be directly on or indirectly on that other element. When an element is referred to as being "connected to," it can be directly connected to or indirectly connected to that other element.

[0036] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] Example 1

[0038] Please refer to Figure 1-5 As shown, this embodiment provides a copper busbar polishing device for switchgear, including a cabinet 1. A feed inlet 2 is provided on one side of the cabinet 1. A support frame 3 is provided inside the cabinet 1. A conveyor belt assembly 4 and a conveyor drive motor are installed on the support frame 3. The conveyor drive motor is used to drive the belt of the conveyor belt assembly 4 to run in both directions. One end of the conveyor belt assembly 4 extends outward from the feed inlet 2 to carry and convey the copper busbar to be polished. To ensure the stability of the copper busbar during the conveying process, the belt of the conveyor belt assembly 4 is elastic. The elastic belt keeps the copper busbar in contact during the polishing process, avoiding local over-polishing or omission.

[0039] To ensure stable positioning during the polishing process, the conveyor belt is equipped with several parallel positioning grooves 7. The dimensions of the positioning grooves 7 are adapted to the copper busbar 100. When the copper busbar is placed in the positioning groove 7, its main body is higher than the surface of the conveyor belt and protrudes from the positioning groove 7 (e.g., Figure 2 As shown in the figure, this ensures that the copper busbar does not shift laterally or longitudinally during transportation, while also fully exposing its edges to facilitate effective polishing of the edge surface by the polishing wheel.

[0040] like Figure 3 As shown, the cabinet 1 is equipped with two sets of copper busbar polishing mechanisms 8 arranged side by side, which can process multiple copper busbars in the same batch, improving work efficiency; as Figure 6 As shown, the copper busbar polishing mechanism 8 includes a switching frame 9 and a switching drive 10. The switching frame 9 is rotatably mounted on the inner wall of the cabinet 1 via a rotating shaft 11. Two sets of polishing wheel assemblies are arranged perpendicularly to each other on the switching frame 9.

[0041] Each polishing wheel assembly includes a polishing drive assembly and a suspension bracket 14, such as Figure 5As shown, the suspension frame 14 is a channel steel structure. A vertical shaft 15 is fixed to the top of the suspension frame 14, and the end of the vertical shaft 15 is rotatably mounted on the switching frame 9 through a bearing. The lower part of the suspension frame 14 is provided with two sets of polishing wheel assemblies. Mounting arm plates 18 are welded to both ends of the lower part of the suspension frame 14. The two sets of polishing wheel assemblies are located between the two mounting arm plates 18. The polishing wheel assembly includes a horizontal shaft 19 rotatably mounted between the two mounting arm plates 18. A polishing wheel 20 is mounted on the horizontal shaft 19. The polishing drive assembly is used to drive the vertical shaft 15 and the polishing wheel 20 to rotate, thereby grinding and polishing the surface of the copper busbar.

[0042] The switching drive unit 10 drives the switching frame 9 to rotate 90° around the axis of the rotating shaft 11, thereby switching between the two sets of polishing wheel assemblies. One set of polishing wheel assemblies has a polishing wheel 20 of abrasive cloth 16, used to remove burrs, sharp edges, and large particle residues from the surface of the copper busbar. The other set of polishing wheel assemblies has a polishing wheel 20 of cotton cloth 17, used to perform fine polishing on the copper busbar after coarse polishing, further improving the surface finish. Through the switching action driven by the switching drive unit 10, it is possible to quickly switch between the abrasive cloth 16 and the cotton cloth 17, achieving continuous operation from coarse polishing to fine polishing. In this invention, the polishing material of the polishing wheel 20 is in contact with the copper busbar, and a certain space is left between the wheel body of the polishing wheel 20 and the copper busbar. This space provides room for the polishing wheel 20 to move around the rotating shaft 11 as the suspension frame 14 rotates. At the same time, the belt of the conveyor belt assembly 4 adopts an elastic structure, and the deformation generated by the belt under pressure further provides room for the suspension frame 14 to rotate around the rotating shaft 11.

[0043] The cabinet 1 is also equipped with a controller 21, which is connected to the conveyor drive motor, the switching drive unit 10 and all the polishing drive components.

[0044] The switching drive component 10 is preferably a cylinder. A lever 22 extends and is fixed on the switching frame 9. The cylinder body is hinged inside the cabinet 1, and the push rod end of the cylinder is hinged to the end of the lever 22. Figure 4 As shown, as the cylinder push rod extends or retracts, the switching frame 9 rotates 90° around the rotating shaft 11, thereby realizing the switching between the abrasive wheel 16 and the cotton wheel 17, and completing the connection between coarse polishing and fine polishing.

[0045] The polishing drive assembly includes a polishing motor 25, a drive shaft 26, and two short shafts 27. The drive shaft 26 and the two short shafts 27 are located on one side of the suspension frame 14. The drive shaft 26 is arranged vertically in the middle of the side of the suspension frame 14, and the two short shafts 27 are arranged horizontally on the side of the mounting arm plate 18 and are symmetrical about the drive shaft 26. The drive shaft 26 and the two short shafts 27 are rotatably mounted on the side of the suspension frame 14 and the side of the mounting arm plate 18 respectively through bearings and bearing seats.

[0046] The upper end of the vertical shaft 15 is provided with a driven gear 30. The polishing motor 25 is mounted on the switching frame 9. The main shaft of the polishing motor 25 is provided with a driving gear 31. The upper end of the transmission shaft 26 is provided with a transmission gear 32. Both the driving gear 31 and the transmission gear 32 mesh with the driven gear 30. The lower end of the transmission shaft 26 is provided with a first bevel gear 33. One end of each of the two short shafts 27 is provided with a second bevel gear 34. The first bevel gear 33 meshes with the second bevel gear 34 at the ends of the two short shafts 27. The other end of each of the two short shafts 27 is provided with a third bevel gear 35.

[0047] The two horizontal shafts 19 at the lower part of the suspension frame 14 are each provided with a fourth bevel gear 36, and the third bevel gear 35 at the ends of the two short shafts 27 respectively meshes with the fourth bevel gear 36 at the ends of the two horizontal shafts 19.

[0048] The polishing process of the switchgear copper busbar polishing device in this embodiment is as follows: The copper busbars are placed sequentially in the positioning grooves 7 of the belt by manual or mechanical means. The conveyor belt assembly 4 is started, and the belt feeds the copper busbars into the cabinet 1. First, a rough polishing operation is performed. The polishing motor 25 drives the drive gear 31 to rotate. Through meshing with the driven gear 30, the power is transmitted to the vertical shaft 15, causing the suspension frame 14 to rotate with the vertical shaft 15, thereby driving the two sets of polishing wheel assemblies on the suspension frame 14 to rotate around the axis of the vertical shaft 15. At the same time, the driven gear... 30 drives the transmission shaft 26 to rotate through the transmission gear 32. The transmission shaft 26 then transmits power to the two short shafts 27 through the meshing of the first bevel gear 33 and the second bevel gear 34. The short shafts 27 then transmit power to the horizontal shafts 19 of the two polishing wheel assemblies through the meshing of the third bevel gear 35 and the fourth bevel gear 36. Finally, the abrasive wheel 16 is driven to rotate at high speed. The abrasive wheel 16 can remove burrs, sharp edges and large particle residues from the surface of the busbar, and at the same time initially flatten the small protrusions to improve the surface flatness, thus completing the rough polishing operation.

[0049] Next, the conveyor belt assembly 4 runs in reverse, the cylinder starts, the cylinder push rod retracts, and the switching frame 9 is rotated 90° by the lever 22, switching the abrasive wheel 16 in the polishing position to the cotton wheel 17. The corresponding polishing motor 25 is started, which drives the cotton wheel 17 to rotate. The cotton wheel 17 performs fine grinding on the surface of the copper busbar, removing the fine burrs and protrusions left by the abrasive wheel 16, further improving the surface smoothness and uniformity, ensuring that the edges and holes are flat, and reducing the risk of tip discharge.

[0050] Throughout the polishing process, the suspension frame 14 rotates, driving the entire set of polishing wheels 20 to rotate along the vertical axis 15, achieving overall coverage of the copper busbar surface and edges; the polishing wheel 20 rotates itself to grind and polish the copper busbar surface.

[0051] After single-sided polishing, the copper busbar can be flipped over and subjected to the same process, undergoing rough polishing and fine polishing in sequence to ensure that both surfaces achieve a high gloss finish. Furthermore, the polishing drive assembly includes a dust cover 37, which is located on the side of the suspension frame 14. The drive gear 31, driven gear 30, transmission gear 32, transmission shaft 26, short shaft 27, and fourth bevel gear 36 are all located inside the dust cover 37, effectively preventing dust from entering, extending equipment life, and ensuring a clean working environment.

[0052] In addition, the cabinet 1 is equipped with an access panel and an access door 39 for easy maintenance and upkeep.

[0053] Example 2

[0054] like Figure 1 and Figure 6 As shown, based on Embodiment 1, this embodiment further provides a dust removal system for collecting copper shavings and dust during the polishing process. The dust removal system includes a negative pressure box 41, a dust collection hood 42, and a dust removal fan 43. The negative pressure box 41 is fixed on the support frame 3, located between the belts of the conveyor belt assembly 4 and corresponding vertically to the copper busbar polishing mechanism 8. The conveyor belt assembly 4 has several through holes evenly distributed on its belt, and the upper surface of the negative pressure box 41 has several negative pressure suction holes 45 evenly distributed. The sidewall of the negative pressure box 41 is connected to the dust removal fan 43 via a negative pressure pipe 46. During the copper busbar polishing process, a negative pressure is formed inside the negative pressure box 41, and the dust generated during polishing is directly sucked in through the through holes and negative pressure suction holes 45. The negative pressure airflow generated by the dust removal fan 43 can promptly remove the copper shavings and dust from the negative pressure box 41.

[0055] In addition, a dust collection hood 42 is installed at the top inside the cabinet 1. The dust collection hood 42 is used to collect dust that rises during the polishing process. The dust collection hood 42 is connected to the dust removal fan 43 through the dust removal pipe 47 to form a top air suction passage.

[0056] With the above structure, the dust removal fan 43 is connected to the negative pressure box 41 and the dust collection hood 42 respectively, forming a bidirectional dust removal airflow. Dust can be absorbed simultaneously, which not only avoids dust accumulation inside the equipment affecting operation, but also prevents dust from dispersing into the external environment, thus improving the working environment.

[0057] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A polishing device for copper busbars in switchgear, characterized in that: Includes a cabinet, with a feed inlet on one side of the cabinet. Inside the cabinet is a support frame, on which a conveyor belt assembly and a conveyor drive motor are mounted. The conveyor drive motor is used to drive the conveyor belt assembly to run in both directions. One end of the conveyor belt assembly extends outward from the feed inlet. The cabinet is equipped with at least one set of copper busbar polishing mechanisms. Each copper busbar polishing mechanism includes a switching frame and a switching drive. The switching frame is rotatably mounted on the inner wall of the cabinet via a rotating shaft. Two sets of polishing wheel assemblies are arranged perpendicularly to each other on the switching frame. Each polishing wheel assembly includes a polishing drive component and a suspension frame. The suspension frame is a channel steel structure, with a vertical shaft fixed to the top and its end rotatably mounted on the switching frame via a bearing. At least one set of polishing wheel assemblies is located at the lower part of the suspension frame. Each polishing wheel assembly includes a horizontal shaft rotatably mounted on the suspension frame, with polishing wheels mounted on the horizontal shaft. The polishing drive component is used to drive the vertical shaft and polishing wheels to rotate. The switching drive is used to drive the switching frame to rotate 90° around the axis of the rotating shaft to achieve the switching of the two polishing wheel assemblies; One set of polishing wheel assemblies has abrasive cloth polishing wheels, while the other set of polishing wheel assemblies has cotton cloth polishing wheels. The cabinet is also equipped with a controller, which is connected to the conveyor drive motor, the switching drive unit, and all polishing drive components.

2. The switchgear copper busbar polishing device according to claim 1, characterized in that: The switching drive component is a cylinder, and a lever arm extends and is fixed on the switching frame. The cylinder body is installed in the cabinet by a hinge, and the end of the cylinder push rod is hinged to the end of the lever arm.

3. The switchgear copper busbar polishing device according to claim 1, characterized in that: The lower part of the suspension frame is provided with two sets of polishing wheel assemblies, and mounting arm plates are welded to both ends of the lower part of the suspension frame. The two sets of polishing wheel assemblies are located between the two mounting arm plates.

4. The switchgear copper busbar polishing device according to claim 3, characterized in that: The polishing drive assembly includes a polishing motor, a drive shaft, and two short shafts. The drive shaft and the two short shafts are located on one side of the suspension frame. The drive shaft is arranged vertically in the middle of the side of the suspension frame, and the two short shafts are arranged horizontally on the side of the mounting arm plate and symmetrically about the drive shaft. The drive shaft and the two short shafts are rotatably mounted on the side of the suspension frame and the side of the mounting arm plate respectively through bearings and bearing seats. The upper end of the vertical shaft is provided with a driven gear, the polishing motor is mounted on the switching frame, the main shaft of the polishing motor is provided with a driving gear, the upper end of the transmission shaft is provided with a transmission gear, and both the driving gear and the transmission gear mesh with the driven gear; the lower end of the transmission shaft is provided with a first bevel gear, one end of each of the two short shafts is provided with a second bevel gear, the first bevel gear meshes with the second bevel gear at the ends of the two short shafts, and the other end of each of the two short shafts is provided with a third bevel gear; The two horizontal shafts at the lower part of the suspension frame are each equipped with a fourth bevel gear, and the third bevel gears at the ends of the two short shafts mesh with the fourth bevel gears at the ends of the two horizontal shafts respectively.

5. The switchgear copper busbar polishing device according to claim 4, characterized in that: The polishing drive assembly also includes a dust cover, which is disposed on the side of the suspension bracket, and the drive gear, driven gear, transmission gear, transmission shaft, short shaft and fourth bevel gear are all located inside the dust cover.

6. The switchgear copper busbar polishing device according to claim 1, characterized in that: The conveyor belt assembly has several positioning grooves arranged side by side. The size of the positioning grooves is adapted to the copper busbar of the switch cabinet, and the depth of the positioning grooves is less than the thickness of the copper busbar of the switch cabinet.

7. The switchgear copper busbar polishing device according to claim 1, characterized in that: The cabinet is equipped with an access panel, and an access door is installed at the access panel.

8. The switchgear copper busbar polishing device according to claim 1, characterized in that: It also includes a dust removal system, which includes a negative pressure box, a dust collection hood, and a dust removal fan. The negative pressure box is fixed on the support frame and is located between the belts of the conveyor belt assembly and corresponds vertically to the copper busbar polishing mechanism. The upper surface of the negative pressure box is evenly distributed with several negative pressure suction holes, and the side wall of the negative pressure box is connected to the dust removal fan through a negative pressure pipe. The belt of the conveyor belt assembly is evenly distributed with several through holes. The dust collection hood is installed at the top inside the cabinet and is connected to the dust collection fan through a dust collection pipe.

9. The switchgear copper busbar polishing device according to claim 1, characterized in that: The belt of the conveyor belt assembly is elastic.

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