Electric vehicle brake disc grinding device

Abstract

This application discloses an electric vehicle brake disc grinding device, including a mounting frame, and a loading / unloading assembly, a material handling mechanism, a limiting assembly, a grinding mechanism, and a cooling assembly mounted on the mounting frame. The loading / unloading assembly includes a fixed frame, a material cylinder, a material discharge plate, and ball bearings. The material cylinder is mounted on the mounting frame via the fixed frame, the material discharge plate is mounted on the mounting frame, and the ball bearings are rotatably mounted on the material discharge plate. The material handling mechanism includes a lifting assembly, a drive assembly, a rotating motor, and a clamping assembly. The lifting assembly is mounted on the mounting frame, and the drive assembly, rotating motor, and clamping assembly are respectively located at the extended end of the lifting assembly. The clamping assembly is drively connected to the drive assembly, and the rotating motor is connected to the limiting assembly. Therefore, automatic loading and unloading of brake discs can be achieved, eliminating the need for secondary grinding of the brake discs and effectively improving the grinding efficiency of the brake discs.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of polishing devices, and particularly relates to a polishing device for brake discs of electric vehicles. BACKGROUND

[0002] A brake disc of an electric vehicle is a core component of a disc brake system, usually a metal disc, which rotates synchronously with the wheel and realizes braking through friction with brake pads.

[0003] At present, the brake disc of an electric vehicle is generally produced by a casting process. In this process, the surface of the brake disc is often attached with an oxide skin and residual sand. In order to remove these defects, the surface of the brake disc usually needs to be flattened by milling. However, a large number of burrs are often generated on the surface after milling, which affects the overall smoothness. Therefore, the brake disc needs to be further polished to further improve the braking performance of the brake disc. However, the polishing process relies on manual loading and unloading operations: the operator needs to disassemble the brake disc that has been processed, and then replace it with a piece to be processed. This process not only reduces the overall polishing efficiency, but also increases the labor intensity of the operator. In addition, since one side of the brake disc presents a convex structure, it needs to be polished twice, which further reduces the polishing efficiency. SUMMARY

[0004] The present application aims to at least solve one of the technical problems in the related art to some extent.

[0005] To this end, one purpose of the present application is to provide a polishing device for brake discs of electric vehicles, which can realize automatic loading and unloading of the brake disc, and can polish the brake disc without the need for secondary polishing, thereby effectively improving the polishing efficiency of the brake disc.

[0006] To achieve the above object, the first aspect of the present application provides an electric vehicle brake disc polishing device, comprising a mounting frame, and an upper and lower feeding assembly, a material taking mechanism, a limiting assembly, a polishing mechanism and a cooling assembly installed on the mounting frame, wherein the upper and lower feeding assembly comprises a fixing frame, a material cylinder, a feeding plate and balls, the material cylinder is installed on the mounting frame through the fixing frame, the feeding plate is installed on the mounting frame, and the balls are rotatably installed on the feeding plate; the material taking mechanism comprises a lifting assembly, a driving assembly, a rotating motor and a clamping assembly, wherein the lifting assembly is arranged on the mounting frame, the driving assembly, the rotating motor and the clamping assembly are arranged at the extending end of the lifting assembly respectively, the clamping assembly is drivingly connected with the driving assembly, the rotating motor is connected with the limiting assembly, and the output end of the rotating motor is drivingly connected with the lifting assembly; the polishing mechanism comprises a first hydraulic rod, a sliding plate, a second hydraulic rod and a multi-surface polishing assembly, wherein the first hydraulic rod is installed on the mounting frame, the sliding plate is installed at the extending end of the first hydraulic rod, the second hydraulic rod is installed on the sliding plate, and the multi-surface polishing assembly is installed at the extending end of the second hydraulic rod; the limiting assembly comprises a limiting frame, a connecting plate and a limiting plate, wherein the limiting frame is installed on the mounting frame, the connecting plate is slidingly connected in the limiting frame through the limiting plate, and the rotating motor is installed at the bottom end of the connecting plate.

[0007] The electric vehicle brake disc polishing device provided by the embodiment of the present application can realize automatic feeding and discharging of the brake disc, and the brake disc does not need to be polished twice, thereby effectively improving the polishing efficiency of the brake disc.

[0008] In addition, the electric vehicle brake disc polishing device provided by the above embodiment of the present application can have the following additional technical features:

[0009] In an embodiment of the present application, the lifting assembly comprises a hydraulic cylinder and a mounting plate, wherein the hydraulic cylinder is installed on the mounting frame, and the mounting plate is rotatably arranged at the extending end of the hydraulic cylinder.

[0010] In an embodiment of the present application, the driving assembly comprises a driving motor, a driving plate and a rotating frame, wherein the driving motor is installed on the mounting plate, the rotating frame is rotatably installed on the mounting plate through the driving plate, and the output end of the driving motor penetrates through the mounting plate and is drivingly connected with the driving plate.

[0011] In an embodiment of the present application, the clamping assembly comprises a cylinder, a linkage plate, a linkage frame and a clamping plate, wherein the cylinder is mounted on the driving plate, the extending end of the cylinder is slidably arranged through the rotating frame, the linkage plate is connected with the extending end of the cylinder, the clamping plate is hinged on the rotating frame, and the linkage plate is connected with the clamping plate through the linkage frame.

[0012] In an embodiment of the present application, the multi-surface polishing assembly comprises an assembling plate, a side polishing plate, a grinding wheel and a top polishing plate, wherein the assembling plate is mounted on the extending end of the second hydraulic rod, the side polishing plate and the grinding wheel are respectively mounted on the bottom end of the assembling plate, and the side polishing plate is arranged below the grinding wheel, and the top polishing plate is mounted on the top end of the assembling plate.

[0013] In an embodiment of the present application, the cooling assembly comprises a storage box, a liquid pump, a liquid discharge pipe, a spray head and a supporting plate, wherein the storage box is mounted on the assembling plate, the liquid pump is mounted on the storage box and the liquid suction end of the liquid pump is connected with the storage box, the liquid discharge pipe is connected with the liquid outlet end of the liquid pump, the spray head is connected with the liquid discharge pipe, the spray head is arranged towards the clamping assembly, the supporting plate is mounted on the assembling plate, and the liquid discharge pipe is clamped on the supporting plate.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] 1. The automatic feeding and discharging effect of the brake disc during the polishing process is achieved under the action of the feeding and discharging assembly and the material taking mechanism, thereby avoiding the need for manual feeding and discharging steps and reducing the labor burden of the workers;

[0016] 2. The polishing work of multiple surfaces of the brake disc is realized under the cooperation of the material taking mechanism and the polishing mechanism, thereby avoiding the need for secondary polishing processing of the brake disc after the polishing is completed, improving the polishing efficiency of the brake disc and fully guaranteeing the polishing quality of the brake disc.

[0017] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0019] Figure 1 FIG. 1 is a perspective view of an electric vehicle brake disc polishing device according to the present application;

[0020] Figure 2This is a schematic diagram of the loading and unloading assembly of the electric vehicle brake disc grinding device of this application.

[0021] Figure 3 This is a schematic diagram of the material handling mechanism of the electric vehicle brake disc grinding device of this application;

[0022] Figure 4 This is a schematic diagram of the drive assembly structure of the electric vehicle brake disc grinding device of this application;

[0023] Figure 5 For this application Figure 4 Enlarged structural diagram at point A in the middle;

[0024] Figure 6 This is a schematic diagram of the grinding mechanism of the electric vehicle brake disc grinding device of this application.

[0025] Figure 7 For this application Figure 6 Enlarged structural diagram at point B.

[0026] As shown in the figure: 1. Mounting frame; 2. Loading / unloading assembly; 21. Fixing frame; 22. Material cylinder; 23. Unloading plate; 24. Ball bearing; 3. Material handling mechanism; 31. Lifting assembly; 311. Hydraulic cylinder; 312. Mounting plate; 32. Drive assembly; 321. Drive motor; 322. Drive plate; 323. Rotating frame; 33. Rotating motor; 34. Clamping assembly; 341. Cylinder; 342. Linkage plate; 343. Linkage frame; 34 4. Clamping plate; 4. Limiting assembly; 41. Limiting frame; 42. Connecting plate; 43. Limiting plate; 5. Grinding mechanism; 51. First hydraulic rod; 52. Sliding plate; 53. Second hydraulic rod; 54. Multi-faceted grinding assembly; 541. Assembly plate; 542. Side grinding plate; 543. Grinding wheel; 544. Top grinding plate; 6. Cooling assembly; 61. Storage box; 62. Liquid pump; 63. Drain pipe; 64. Nozzle; 65. Support plate. Detailed Implementation

[0027] The embodiments of this application are described in detail below. Examples of these embodiments 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 this application, and should not be construed as limiting this application.

[0028] The electric vehicle brake disc grinding device according to an embodiment of this application will now be described with reference to the accompanying drawings.

[0029] like Figures 1-7 As shown, the electric vehicle brake disc grinding device of this application embodiment may include a mounting frame 1, and a loading and unloading assembly 2, a material picking mechanism 3, a limiting assembly 4, a grinding mechanism 5 and a cooling assembly 6 mounted on the mounting frame 1.

[0030] Wherein, the feeding and discharging assembly 2 can include a fixing frame 21, a material cylinder 22, a discharging plate 23 and a ball 24.

[0031] It should be noted that the bottom end of the material cylinder 22 is open in the above embodiment, and a limiting plate is installed at the bottom end of the material cylinder 22 to support the brake disc placed in the material cylinder 22, so as to avoid the brake disc from falling off the bottom end of the material cylinder 22.

[0032] It should be noted that the discharging plate 23 is arranged in an inclined manner in the above embodiment, and the end inclined downward is the discharging end.

[0033] It should be noted that a conveying belt (not shown in the figure) can be placed at the discharging end of the discharging plate 23 to complete the conveying of the polished brake disc.

[0034] Wherein, the material cylinder 22 is installed on the mounting frame 1 through the fixing frame 21, the discharging plate 23 is installed on the mounting frame 1, and the ball 24 is rotatably installed on the discharging plate 23.

[0035] Specifically, the installation of the material cylinder 22 on the mounting frame 1 is completed under the action of the fixing frame 21, then the placement of the brake disc is completed under the action of the material cylinder 22, and the discharging of the brake disc is realized through the discharging plate 23 and the ball 24.

[0036] The taking mechanism 3 can include a lifting assembly 31, a driving assembly 32, a rotating motor 33 and a clamping assembly 34.

[0037] It should be noted that the clamping assembly 34 is provided in two groups in the above embodiment, and is respectively located at both ends of the lifting assembly 31.

[0038] Wherein, the lifting assembly 31 is arranged on the mounting frame 1, the driving assembly 32, the rotating motor 33 and the clamping assembly 34 are arranged at the extending end of the lifting assembly 31 respectively, the clamping assembly 34 is in transmission connection with the driving assembly 32, the rotating motor 33 is connected with the limiting assembly 4, and the output end of the rotating motor 33 is in transmission connection with the lifting assembly 31.

[0039] It should be noted that the lifting assembly 31 is installed below the control device (not shown in the figure, and is prior art, so no more description is made) in the above embodiment, the middle part of the clamping assembly 34 is installed with a positioning sensor (not shown in the figure, and is prior art, so no more description is made), and the control device is in electrical connection with the lifting assembly 31, the driving assembly 32, the rotating motor 33, the clamping assembly 34 and the positioning sensor in sequence.

[0040] The polishing mechanism 5 can include a first hydraulic rod 51, a sliding plate 52, a second hydraulic rod 53 and a multi-surface polishing assembly 54.

[0041] Wherein, the first hydraulic rod 51 is installed on the mounting frame 1, the sliding plate 52 is installed on the extension end of the first hydraulic rod 51, the second hydraulic rod 53 is installed on the sliding plate 52, and the multi-surface polishing assembly 54 is installed on the extension end of the second hydraulic rod 53.

[0042] Specifically, the first hydraulic rod 51 adjusts the position of the second hydraulic rod 53 and the multi-surface polishing assembly 54 through the sliding plate 52, and then the second hydraulic rod 53 drives the multi-surface polishing assembly 54 to ascend and descend, so that the multi-surface polishing assembly 54 is in contact with the brake disc. With the rotation of the driving assembly 32 and the clamping assembly 34 on the brake disc, the multi-surface polishing assembly 54 completes the polishing effect on the brake disc.

[0043] Specifically, the electric vehicle brake disc polishing device provided by the present application can be used for polishing the brake disc of the vehicle. In actual operation, the relevant personnel will place the brake disc to be polished in the barrel 22 on the fixing frame 21, and then adjust the position of the driving assembly 32 and the clamping assembly 34 under the action of the lifting assembly 31, and detect the central through hole of the brake disc placed in the barrel 22 through the positioning sensor. The driving assembly 32 rotates the clamping assembly 34 to align with the through hole on the brake disc. Under the extension of the lifting assembly 31, the clamping assembly 34 completes the clamping of the brake disc in the barrel 22, and under the driving of the rotating motor 33, the clamping assembly 34 takes out the brake disc in the barrel 22. Then the lifting assembly 31 descends, the rotating motor 33 adjusts the position of the two sets of clamping assemblies 34, and the position of the two sets of clamping assemblies 34 is exchanged, so as to realize the feeding effect of the brake disc.

[0044] Then, under the driving of the first hydraulic rod 51, the sliding plate 52 drives the second hydraulic rod 53 and the multi-surface polishing assembly 54 to move on the mounting frame 1, and under the extension of the second hydraulic rod 53, the multi-surface polishing assembly 54 is in contact with the brake disc clamped by the clamping assembly 34. With the high-speed rotation of the driving assembly 32 on the brake disc clamped by the clamping assembly 34, the multi-surface polishing assembly 54 is in contact with the brake disc during rotation, thereby realizing the polishing work of the brake disc. During polishing, the cooling assembly 6 completes the lubrication and cooling of the brake disc during polishing, thereby fully ensuring the polishing quality of the brake disc.

[0045] After polishing, the polished brake disc on one of the clamping assemblies 34 is clamped on the discharging plate 23 under the rotation of the rotating motor 33. The lifting assembly 31 gradually descends during the rotation of the rotating motor 33, and the clamping force of the clamping assembly 34 on the polished brake disc is weakened, so as to force the polished brake disc to fall off from the clamping assembly 34 to the discharging plate 23. With the sliding of the inclined discharging plate 23 and the ball 24, the discharging purpose is achieved.

[0046] The above embodiment can realize automatic feeding and discharging of the brake disc, and the brake disc does not need to be polished again, thereby effectively improving the polishing efficiency of the brake disc.

[0047] In one embodiment of the present application, as shown in Figure 1 、 Figure 3 and Figure 4 , the lifting assembly 31 can include a hydraulic cylinder 311 and a mounting plate 312.

[0048] The hydraulic cylinder 311 is mounted on the mounting frame 1, and the mounting plate 312 is rotationally arranged at the extending end of the hydraulic cylinder 311.

[0049] It can be understood that the mounting plate 312 adjusts the height of the driving assembly 32 and the clamping assembly 34 under the driving of the hydraulic cylinder 311.

[0050] In one embodiment of the present application, as shown in Figure 1 、 Figure 3 and Figure 4 , the driving assembly 32 can include a driving motor 321, a driving plate 322 and a rotating frame 323.

[0051] It should be noted that the driving motor 321 described in the above embodiment is mounted on the bottom end of the mounting plate 312 through an L-shaped frame.

[0052] The driving motor 321 is mounted on the mounting plate 312, the rotating frame 323 is rotationally mounted on the mounting plate 312 through the driving plate 322, and the output end of the driving motor 321 passes through the mounting plate 312 and is in transmission connection with the driving plate 322.

[0053] Specifically, the driving plate 322 and the rotating frame 323 are driven to rotate on the mounting plate 312 under the action of the driving motor 321, and the rotation of the clamping assembly 34 is realized in the process of the rotation of the rotating frame 323.

[0054] In one embodiment of the present application, as shown in Figures 3-5 , the clamping assembly 34 can include a cylinder 341, a linkage plate 342, a linkage frame 343 and a clamping plate 344.

[0055] It should be noted that the linkage frame 343 and the clamping plate 344 described in the above embodiment are each provided with five groups, and the linkage frame 343 and the clamping plate 344 can correspond to the number of through holes on the brake disc.

[0056] The cylinder 341 is mounted on the driving plate 322, the extending end of the cylinder 341 is slidingly arranged through the rotating frame 323, the linkage plate 342 is connected with the extending end of the cylinder 341, the clamping plate 344 is hinged on the rotating frame 323, and the linkage plate 342 is connected with the clamping plate 344 through the linkage frame 343.

[0057] Specifically, under the extension of the cylinder 341, the height of the linkage plate 342 on the rotating frame 323 changes, when the linkage plate 342 rises, the increase of the distance between the clamping plates 344 is completed through the linkage frame 343, so as to release the clamped brake disc, when the linkage plate 342 falls, the decrease of the distance between the clamping plates 344 is completed through the linkage frame 343, so as to clamp the brake disc.

[0058] In an embodiment of the present application, as shown in Figure 1 The limiting assembly 4 can include a limiting frame 41, a connecting plate 42 and a limiting plate 43.

[0059] The limiting frame 41 is installed on the mounting frame 1, the connecting plate 42 is slidingly connected inside the limiting frame 41 through the limiting plate 43, and the rotating motor 33 is installed at the bottom end of the connecting plate 42.

[0060] It should be noted that the middle part of the limiting frame 41 is provided with a sliding hole in the above embodiment.

[0061] Specifically, after the mounting plate 312 is lifted by the hydraulic cylinder 311, the rotating motor 33 is lifted in the limiting frame 41 under the action of the connecting plate 42 and the limiting plate 43, and under the limiting of the limiting plate 43, the rotating motor 33 is prevented from being affected in the process of driving the mounting plate 312.

[0062] In an embodiment of the present application, as shown in Figure 1 , Figure 6 The multi-surface polishing assembly 54 includes an assembling plate 541, a side polishing plate 542, a grinding wheel 543 and a top polishing plate 544.

[0063] It should be noted that a set of grinding wheels 543 can be additionally installed below the side polishing plate 542, so as to realize the polishing work on the bottom end of the brake disc.

[0064] It should be noted that the positions of the side polishing plate 542 and the top polishing plate 544 on the assembling plate 541 in the above embodiment can be adjusted.

[0065] As a possible case, a motor can be installed on the assembling plate 541 to drive the grinding wheel 543, and the rotating direction of the grinding wheel 543 is opposite to the rotating direction of the brake disc clamped on the clamping assembly 34, so as to improve the quality of polishing the brake disc.

[0066] The assembling plate 541 is installed at the extending end of the second hydraulic rod 53, the side polishing plate 542 and the grinding wheel 543 are respectively installed at the bottom end of the assembling plate 541, and the side polishing plate 542 is arranged below the grinding wheel 543, and the top polishing plate 544 is installed at the top end of the assembling plate 541.

[0067] Specifically, the installation of the side grinding plate 542, the grinding wheel 543 and the top grinding plate 544 is completed under the action of the assembling plate 541, then the side grinding plate 542 is in contact with the side of the brake disc, the grinding wheel 543 is in contact with the brake surface of the brake disc, and the top grinding plate 544 is in contact with the top protrusion of the brake disc, under the high-speed rotation of the brake disc, the side grinding plate 542, the grinding wheel 543 and the top grinding plate 544 achieve the grinding effect on the brake disc.

[0068] In an embodiment of the present application, as shown in Figure 1 , Figures 6-7 The cooling assembly 6 can include a storage box 61, a liquid pump 62, a liquid discharge pipe 63, a spray head 64 and a supporting plate 65.

[0069] It should be noted that the storage box 61 is connected with the liquid inlet pipe in the above embodiment.

[0070] The storage box 61 is installed on the assembling plate 541, the liquid pump 62 is installed on the storage box 61, the liquid pump 62 is connected with the storage box 61 at the liquid suction end, the liquid discharge pipe 63 is connected with the liquid outlet end of the liquid pump 62, the spray head 64 is connected with the liquid discharge pipe 63, the spray head 64 is arranged towards the clamping assembly 34, the supporting plate 65 is installed on the assembling plate 541, and the liquid discharge pipe 63 is clamped on the supporting plate 65.

[0071] It should be noted that the storage box 61 stores the grinding fluid, then under the extraction of the liquid pump 62, the grinding fluid is sprayed on the brake disc during the grinding process through the liquid discharge pipe 63 and the spray head 64, and under the support of the supporting plate 65, the liquid discharge pipe 63 does not collapse due to the flow of the grinding fluid, and the cooling and lubrication of the brake disc during the grinding process are completed under the action of the grinding fluid, which fully guarantees the grinding quality of the brake disc.

[0072] In summary, the electric vehicle brake disc grinding device of the embodiment of the present application can realize the automatic feeding and discharging of the brake disc, and can not need to grind the brake disc twice, thereby effectively improving the grinding efficiency of the brake disc.

[0073] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0074] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0075] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and modifications to the above-described embodiments within the scope of the present application.

Claims

1. An electric vehicle brake disc polishing apparatus, characterized by, The utility model provides a kind of multi-surface polishing device, including installation frame, and the feeding and discharging assembly, material taking mechanism, limiting component, polishing mechanism and cooling assembly installed on the installation frame, The feeding and discharging assembly includes fixed frame, barrel, discharging plate and ball, wherein, The barrel is installed on the installation frame by the fixed frame, the discharging plate is installed on the installation frame, and the ball is rotatably installed on the discharging plate; The material taking mechanism includes lifting assembly, driving assembly, rotating motor and clamping assembly, wherein, The lifting assembly is arranged on the installation frame, the driving assembly, the rotating motor and the clamping assembly are respectively arranged on the extending end of the lifting assembly, the clamping assembly is drivingly connected with the driving assembly, the rotating motor is connected with the limiting component, and the output end of the rotating motor is drivingly connected with the lifting assembly; The polishing mechanism includes first hydraulic rod, sliding plate, second hydraulic rod and multi-surface polishing assembly, wherein, The first hydraulic rod is installed on the installation frame, the sliding plate is installed on the extending end of the first hydraulic rod, the second hydraulic rod is installed on the sliding plate, and the multi-surface polishing assembly is installed on the extending end of the second hydraulic rod; The limiting component includes limiting frame, connecting plate and limiting plate, wherein, The limiting frame is installed on the installation frame, the connecting plate is slidingly connected inside the limiting frame through the limiting plate, and the rotating motor is installed at the bottom end of the connecting plate.

2. The electric vehicle brake disc polishing apparatus of claim 1, wherein, The lifting assembly includes hydraulic cylinder and mounting plate, wherein, The hydraulic cylinder is installed on the installation frame, and the mounting plate is rotatably arranged at the extending end of the hydraulic cylinder.

3. The electric vehicle brake disc polishing apparatus of claim 2, wherein, The driving assembly includes driving motor, driving plate and rotating frame, wherein, The driving motor is installed on the mounting plate, the rotating frame is rotatably installed on the mounting plate through the driving plate, and the output end of the driving motor penetrates through the mounting plate and is drivingly connected with the driving plate.

4. The power brake disc grinding apparatus of claim 3 wherein, The clamping assembly includes air cylinder, linkage plate, linkage frame and clamping plate, wherein, The air cylinder is installed on the driving plate, the extending end of the air cylinder is slidingly arranged through the rotating frame, the linkage plate is connected with the extending end of the air cylinder, the clamping plate is hingedly arranged on the rotating frame, and the linkage plate is connected with the clamping plate through the linkage frame.

5. The electric vehicle brake disc polishing apparatus of claim 1, wherein, The multi-surface polishing assembly includes assembly plate, side edge polishing plate, grinding wheel and top polishing plate, wherein, The assembly plate is installed on the extending end of the second hydraulic rod, the side edge polishing plate and the grinding wheel are respectively installed at the bottom end of the assembly plate, the side edge polishing plate is arranged below the grinding wheel, and the top polishing plate is installed at the top end of the assembly plate.

6. The power brake disc grinding apparatus of claim 5 wherein, The cooling assembly includes storage box, liquid pump, liquid discharge pipe, spray head and support plate, wherein, The storage box is installed on the assembly plate, the liquid pump is installed on the storage box, the liquid suction end of the liquid pump is connected with the storage box, the liquid discharge pipe is connected with the liquid outlet end of the liquid pump, the spray head is connected with the liquid discharge pipe, the spray head is arranged towards the clamping assembly, the support plate is installed on the assembly plate, and the liquid discharge pipe is clamped on the support plate.

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