A protective cover for a bearing grinding machine
By designing a dust removal and adjustment mechanism for the bearing grinding machine's protective cover, the problem of dust splashing was solved, achieving both environmental protection and equipment operational stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LUOYANG YINGCAI MASCH MFG CO LTD
- Filing Date
- 2025-07-02
- Publication Date
- 2026-06-30
AI Technical Summary
The metal dust, grinding chips, and cutting fluid splashes generated during the operation of bearing grinding machines pollute the environment, endanger the health of operators, and affect the operating accuracy of the equipment.
A protective cover for a bearing grinding machine was designed, comprising a dust removal mechanism and an adjustment mechanism. The dust removal mechanism achieves precise positioning of the vacuum cleaner and dust collection through a moving component and a connecting pipe assembly. The adjustment mechanism allows for adjustment of the angle of the side plate of the cover, facilitating operation and observation.
It effectively removes dust, improves the working environment, protects equipment and operators, and enhances equipment operating accuracy and ease of operation.
Smart Images
Figure CN224425253U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bearing grinding machine technology, specifically to a bearing grinding machine protective cover. Background Technology
[0002] In the bearing manufacturing process, grinding machines are key equipment for precision machining of bearing components (such as inner rings, outer rings, rolling elements, etc.), and their machining accuracy directly affects the bearing's performance and service life. However, when bearing grinding machines are in operation, they usually need to perform high-speed grinding on the bearing surface, which generates a large amount of metal dust, grinding chips, and cutting fluid splashing.
[0003] For example, CN2930957Y discloses a protective cover for a bearing inner ring flange grinding machine. It includes the grinding machine, an electrical control box, and an operating box. The protective cover completely encloses the grinding machine bed. The operating box and electrical control box are mounted on the side of the protective cover. A mist extractor for condensing liquefied mist is installed on the protective cover. At least one door is provided around the protective cover to allow the operator to access the interior of the grinding machine. The operating box can rotate to different angles depending on the operator's position and is hinged to the protective cover via a pivot. The electrical control box is mounted on an electrical box bracket, with a heat exchanger mounted on its side and screwed to the protective cover. A transformer and auxiliary electrical components are installed in the electrical box bracket. The operating box and electrical control box are connected by a cable and to the electrical components inside the grinding machine via a junction box, completely isolating them from the grinding environment inside the machine tool.
[0004] However, bearing grinding machines typically require high-speed grinding of the bearing surface during operation. This process generates a large amount of metal dust, grinding chips, and cutting fluid splashes, which not only pollute the working environment and endanger the health of operators, but may also cause dust accumulation, affecting the operating accuracy of the equipment and even causing equipment failure. Therefore, those skilled in the art provide a bearing grinding machine protective cover to solve the problems mentioned in the background art. Utility Model Content
[0005] The purpose of this utility model is to provide a protective cover for bearing grinding machines, which solves the problem that in the prior art, bearing grinding machines usually need to perform high-speed grinding on the bearing surface during operation, which generates a large amount of metal dust, grinding chips and cutting fluid splashing.
[0006] This utility model provides the following technical solution: a protective cover for a bearing grinding machine, comprising a cover body for shielding the bearing grinding machine, a fixed shaft for connecting the grinding machine and the cover body being rotatably connected to the inner cavity of the cover body, a dust removal mechanism for removing dust during bearing grinding being fixedly connected to the center of the top of the cover body, the dust removal mechanism including a moving component for axially adjusting the position of a connecting pipe assembly and a dust suction assembly, a connecting pipe assembly for connecting the moving component and the dust suction assembly, and a dust suction assembly for controlling the dust removal mechanism to remove dust from the inner cavity of the cover body, and an adjustment mechanism for adjusting the flip angle of the cover body side plate being fixedly connected to the side end of the cover body, two sets of the adjustment mechanism being symmetrically arranged.
[0007] As a preferred embodiment of the above technical solution, the movable component includes a first fixed post, which is fixedly connected to the inner cavity of the cover. A first motor is fixedly connected to one end of the first fixed post, and a screw is threadedly connected to the inner cavity of the first fixed post. The screw is electrically connected to the first motor through the first fixed post, and a movable shaft is fixedly connected to the inner cavity of the first fixed post.
[0008] As a preferred embodiment of the above technical solution, a slider is threadedly connected to the outer side of the screw, the slider is slidably connected to the outer side of the moving shaft, a second motor is fixedly connected to the bottom end of the slider, a first connecting post is fixedly connected to the bottom end of the second motor, a vacuum cleaner is fixedly connected to the bottom end of the first connecting post, a suction groove is opened in the inner cavity of the vacuum cleaner, and the suction groove passes through the inner cavity of the first connecting post, and the vacuum cleaner is electrically connected to the second motor through the first connecting post.
[0009] As a preferred embodiment of the above technical solution, the connecting pipe assembly includes a first pipe, which is fixedly connected to one side of the first connecting post. The inner cavity of the first pipe is provided with a transmission groove, and the transmission groove corresponds to the dust collection groove. A first connector is fixedly connected to the outer side of the first pipe, and a corrugated pipe is fixedly connected to the inner cavity of the first connector. The corrugated pipe is fixedly connected to the first pipe through the first connector.
[0010] As a preferred embodiment of the above technical solution, a second connector is fixedly connected to the outer side of the top of the corrugated pipe, and a second pipe is fixedly connected to the inner cavity of the second connector. The second pipe is fixedly connected to the corrugated pipe through the second connector. The inner cavities of the second pipe and the corrugated pipe are respectively provided with slots corresponding to the transmission groove for conveying dust.
[0011] As a preferred embodiment of the above technical solution, the dust collection assembly includes a dust collection module, which is fixedly connected to the end of the second pipe away from the second connector. A filter module is fixedly connected to the end of the dust collection module away from the second pipe, and a second connecting post is fixedly connected to the outside of the second pipe. A wind speed control module is fixedly connected to one end of the second connecting post.
[0012] As a preferred embodiment of the above technical solution, the adjustment mechanism includes a second fixed column, which is fixedly connected to one end of the cover. A third motor is fixedly connected to one end of the second fixed column. A rotating shaft is rotatably connected to the inner cavity of the second fixed column. The rotating shaft is electrically connected to the third motor through the second fixed column. An adjustment plate is fixedly connected to the outer side of the rotating shaft.
[0013] As a preferred embodiment of the above technical solution, a third connecting column is fixedly connected to the side of the adjusting plate away from the rotation axis. Two sets of the third connecting columns are symmetrically arranged, and a fourth connecting column is hinged between the two sets of symmetrically arranged third connecting columns. A connecting rod is fixedly connected to one end of the fourth connecting column.
[0014] As a preferred embodiment of the above technical solution, a fifth connecting post is fixedly connected to the end of the connecting rod away from the fourth connecting post, and a third fixing post is hinged to the outer side of the fifth connecting post, and the third fixing post is fixedly connected to the top of the cover.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] This invention incorporates a dust removal mechanism that activates when the bearing grinder performs grinding operations. The first motor, powered on, drives a screw to rotate within the first fixed post. Since the screw is threadedly connected to the slider, and the slider is slidably connected to the moving shaft, the screw's rotation causes the slider to move axially along the moving shaft. This, in turn, moves the second motor, the first connecting post, and the vacuum cleaner at the bottom of the slider, bringing the vacuum cleaner closer to the dust-generating area. The second motor then drives the vacuum cleaner to clean the interior of the housing. When powered on, the dust collection module generates suction, drawing dust from the vacuum cleaner's suction chamber through the second pipe, corrugated pipe, first pipe, and first connecting post. After entering the dust collection module, the dust is filtered by the filter module, retaining dust and other impurities within it, while clean air is expelled. The wind speed control module adjusts the suction speed according to actual conditions to achieve optimal dust removal.
[0017] Based on the aforementioned beneficial effects, this utility model also includes an adjustment mechanism. When it is necessary to adjust the flip angle of the side plate of the cover, the adjustment mechanism is activated. The third motor is powered on and runs, driving the rotating shaft to rotate within the second fixed column. The rotation of the rotating shaft drives the adjustment plate to rotate. Simultaneously, the rotation of the adjustment plate drives the third connecting column to rotate. The third connecting column is hinged to the fourth connecting column, and the fourth connecting column can rotate between the third connecting columns, driving the connecting rod to move. The connecting rod is hinged to the third fixed column through the fifth connecting column, and finally fixed in position with the cover through the third fixed column, achieving precise angle adjustment. This facilitates the operator's operation, maintenance, and observation of the processing status of the grinding machine. Attached Figure Description
[0018] Figure 1 A schematic diagram of the overall structure of a bearing grinding machine protective cover;
[0019] Figure 2 A schematic diagram of the connection of the first fixed column of the dust removal mechanism of a bearing grinding machine protective cover;
[0020] Figure 3 This is a schematic diagram showing the connection of a dust collector to a dust removal mechanism for a bearing grinding machine protective cover.
[0021] Figure 4 A schematic diagram showing the connection of the second fixed column of the adjustment mechanism for a bearing grinding machine protective cover;
[0022] Figure 5 This is a schematic diagram of the adjustment mechanism and adjustment plate connection of a bearing grinding machine protective cover.
[0023] In the diagram: 1. Cover; 2. Fixed shaft; 3. Dust removal mechanism; 31. First fixed column; 32. First motor; 33. Screw; 34. Moving shaft; 35. Slider; 36. Second motor; 37. First connecting column; 38. Vacuum cleaner; 39. First pipe; 310. First connector; 311. Corrugated pipe; 312. Second connector; 313. Second pipe; 314. Dust collection module; 315. Filter module; 316. Second connecting column; 317. Wind speed control module; 4. Adjustment mechanism; 41. Second fixed column; 42. Third motor; 43. Rotating shaft; 44. Adjustment plate; 45. Third connecting column; 46. Fourth connecting column; 47. Connecting rod; 48. Fifth connecting column; 49. Third fixed column. Detailed Implementation
[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0025] Please see Figures 1-5 As shown, this utility model provides a technical solution: a protective cover for a bearing grinding machine, including a cover body 1 for shielding the bearing grinding machine, a fixed shaft 2 for connecting the grinding machine and the cover body 1 rotatably connected to the inner cavity of the cover body 1, a dust removal mechanism 3 for removing dust during bearing grinding fixedly connected to the center of the top of the cover body 1, the dust removal mechanism 3 including a moving component for axially adjusting the position of the connecting pipe assembly and the dust suction assembly, a connecting pipe assembly for connecting the moving component and the dust suction assembly, and a dust suction assembly for controlling the dust removal mechanism 3 to remove dust from the inner cavity of the cover body 1, and an adjustment mechanism 4 for adjusting the flip angle of the side plate of the cover body 1 fixedly connected to the side end of the cover body 1, two sets of adjustment mechanisms 4 are symmetrically arranged.
[0026] The cover 1 is connected to the grinding machine via a fixed shaft 2. When the angle of the side plate of the cover 1 needs to be adjusted, the adjustment mechanism 4 works, causing the side plate to rotate, so that the operator can observe the grinding of the bearing without opening the cover 1 too much. The dust removal mechanism 3 is activated during the grinding process to collect and process the dust inside the cover 1. During this process, the cover 1 can shield and protect the bearing grinding machine, preventing dust from splashing and accidental collisions during the grinding process. The fixed shaft 2 realizes the rotational connection between the grinding machine and the cover 1, ensuring that the cover 1 can rotate flexibly relative to the grinding machine during adjustment. The dust removal mechanism 3 can effectively remove the dust generated during grinding, improve the working environment, and reduce the harm of dust to equipment and operators. The adjustment mechanism 4 can adjust the rotation angle of the side plate of the cover 1, making it convenient for the operator to operate, maintain, and observe the processing of the grinding machine.
[0027] As one implementation method in this embodiment, please refer to Figures 1-2 As shown, the moving component includes a first fixed post 31, which is fixedly connected to the inner cavity of the cover 1. A first motor 32 is fixedly connected to one end of the first fixed post 31. A screw 33 is threadedly connected to the inner cavity of the first fixed post 31. The screw 33 is electrically connected to the first motor 32 through the first fixed post 31. A moving shaft 34 is fixedly connected to the inner cavity of the first fixed post 31.
[0028] After the first motor 32 is powered on, it operates and transmits its power to the screw 33. The screw 33 rotates within the first fixed post 31. Since the screw 33 is threadedly connected to the slider 35 and the slider 35 is slidably connected to the moving shaft 34, the rotation of the screw 33 drives the slider 35 to move axially along the moving shaft 34. This, in turn, drives the second motor 36, the first connecting post 37, and the vacuum cleaner 38 at the bottom of the slider 35 to move together, thereby achieving axial adjustment of the position of the vacuum cleaner 38. This allows the vacuum cleaner 38 to more accurately approach the dust-generating area and improve dust removal efficiency.
[0029] As one implementation method in this embodiment, please refer to Figures 1-5 As shown, a slider 35 is threadedly connected to the outer side of the screw 33. The slider 35 is slidably connected to the outer side of the moving shaft 34. A second motor 36 is fixedly connected to the bottom end of the slider 35. A first connecting post 37 is fixedly connected to the bottom end of the second motor 36. A vacuum cleaner 38 is fixedly connected to the bottom end of the first connecting post 37. A suction groove is opened in the inner cavity of the vacuum cleaner 38, and the suction groove passes through the inner cavity of the first connecting post 37. The vacuum cleaner 38 is electrically connected to the second motor 36 through the first connecting post 37.
[0030] The slider 35 moves with the rotation of the screw 33. When the suction position is determined, the second motor 36 is powered on and drives the vacuum cleaner 38 to vacuum the inner cavity of the cover 1.
[0031] As one implementation method in this embodiment, please refer to Figures 1-3 As shown, the connecting pipe assembly includes a first pipe 39, which is fixedly connected to one side of the first connecting post 37. The inner cavity of the first pipe 39 is provided with a transmission groove, which corresponds to the dust collection groove. A first connector 310 is fixedly connected to the outer side of the first pipe 39. A corrugated pipe 311 is fixedly connected to the inner cavity of the first connector 310. The corrugated pipe 311 is fixedly connected to the first pipe 39 through the first connector 310.
[0032] The dust collected by the vacuum cleaner 38 enters the inner cavity of the first connecting post 37 through the suction groove, then enters the transmission groove of the first pipe 39, and then enters the bellows 311 through the first connector 310. Since the bellows 311 can be flexibly deformed, when the vacuum cleaner 38 moves, the bellows 311 expands, contracts and bends accordingly. The dust enters the second connector 312 and the second pipe 313 through the bellows 311 and is transported to the suction assembly for processing. Due to the flexible nature of the bellows 311, it can expand, contract and bend accordingly when the vacuum cleaner 38 moves, ensuring the smooth transmission of dust and avoiding pipe breakage or blockage caused by the movement of the vacuum cleaner 38.
[0033] As one implementation method in this embodiment, please refer to Figures 1-3 As shown, a second connector 312 is fixedly connected to the outer side of the top end of the corrugated pipe 311. A second pipe 313 is fixedly connected to the inner cavity of the second connector 312. The second pipe 313 is fixedly connected to the corrugated pipe 311 through the second connector 312. The inner cavities of the second pipe 313 and the corrugated pipe 311 are respectively provided with slots corresponding to the transmission groove for conveying dust.
[0034] The corrugated pipe 311 is connected to the second connector 312 and the second pipe 313. When the vacuum cleaner 38 moves, the expansion and contraction of the corrugated pipe 311 ensures that the dust transmission path between the second pipe 313 and the first pipe 39 is always unobstructed. After the dust enters the second pipe 313 through the corrugated pipe 311, it continues to be transmitted to the vacuuming assembly, further ensuring the connectivity and flexibility of the pipe during the dust transmission process, so that the dust can be smoothly transmitted from the vacuum cleaner 38 to the vacuuming assembly.
[0035] As one implementation method in this embodiment, please refer to Figures 1-3 As shown, the vacuuming assembly includes a vacuuming module 314, which is fixedly connected to the end of the second pipe 313 away from the second connector 312. A filter module 315 is fixedly connected to the end of the vacuuming module 314 away from the second pipe 313. A second connecting post 316 is fixedly connected to the outside of the second pipe 313. A wind speed control module 317 is fixedly connected to one end of the second connecting post 316.
[0036] When the dust collection module 314 is powered on, it generates suction and draws in dust through the second pipe 313 and the corrugated pipe 311. After entering the dust collection module 314, the dust is filtered by the filter module 315, and dust and other impurities are retained in the filter module 315 while clean air is discharged. The wind speed control module 317 can adjust the dust collection wind speed according to actual needs. When there is a lot of dust generated by grinding, the wind speed is increased to improve dust collection efficiency; when there is less dust, the wind speed is reduced to save energy.
[0037] As one implementation method in this embodiment, please refer to Figures 1-5 As shown, the adjustment mechanism 4 includes a second fixed column 41, which is fixedly connected to one end of the cover 1. A third motor 42 is fixedly connected to one end of the second fixed column 41. A rotating shaft 43 is rotatably connected to the inner cavity of the second fixed column 41. The rotating shaft 43 is electrically connected to the third motor 42 through the second fixed column 41. An adjustment plate 44 is fixedly connected to the outer side of the rotating shaft 43.
[0038] After the third motor 42 is powered on, it drives the rotating shaft 43 to rotate inside the second fixed column 41. The rotation of the rotating shaft 43 drives the adjusting plate 44 to rotate. The adjusting plate 44 is connected to the cover 1 through the third connecting column 45, the fourth connecting column 46, the connecting rod 47, the fifth connecting column 48 and the third fixed column 49, and finally fixed in position to the cover 1 through the third fixed column 49.
[0039] As one implementation method in this embodiment, please refer to Figures 1-5 As shown, a third connecting column 45 is fixedly connected to the side of the adjusting plate 44 away from the rotating shaft 43. Two sets of third connecting columns 45 are symmetrically arranged. A fourth connecting column 46 is hinged between the two sets of symmetrically arranged third connecting columns 45. A connecting rod 47 is fixedly connected to one end of the fourth connecting column 46.
[0040] When the adjusting plate 44 rotates, it drives the third connecting column 45 to rotate. Since the third connecting column 45 is hinged to the fourth connecting column 46, the fourth connecting column 46 can rotate between the third connecting columns 45. At the same time, the fourth connecting column 46 drives the connecting rod 47 to move. The connecting rod 47 is hinged to the third fixed column 49 through the fifth connecting column 48. The position of one end is determined by the fifth connecting column 48 and the third fixed column 49.
[0041] As one implementation method in this embodiment, please refer to Figures 1-5 As shown, the end of the connecting rod 47 away from the fourth connecting post 46 is fixedly connected to the fifth connecting post 48, and the outer side of the fifth connecting post 48 is hinged to the third fixing post 49, which is fixedly connected to the top of the cover 1.
[0042] The connecting rod 47 moves under the drive of the fourth connecting post 46, is connected to the third fixed post 49 by the hinge of the fifth connecting post 48, and is finally fixed in position to the cover 1 by the third fixed post 49.
[0043] Working principle: When the bearing grinder performs grinding operations, the dust removal mechanism 3 is activated. The first motor 32 is powered on and rotates, driving the screw 33 to rotate within the first fixed column 31. Since the screw 33 is threadedly connected to the slider 35, and the slider 35 is slidably connected to the moving shaft 34, the rotation of the screw 33 causes the slider 35 to move axially along the moving shaft 34, thereby moving the second motor 36, the first connecting column 37, and the vacuum cleaner 38 at the bottom of the slider 35, bringing the vacuum cleaner 38 closer to the dust-generating area. The second motor 36 drives the vacuum cleaner 38 to work, vacuuming the inner cavity of the cover 1. After the dust collection module 314 is powered on, it generates suction, which draws the dust from the dust collection groove of the vacuum cleaner 38 through the second pipe 313, the corrugated pipe 311, the first pipe 39, and the first connecting column 37. After dust enters the dust collection module 314, it is filtered by the filter module 315. Dust and other impurities are retained in the filter module 315, and clean air is discharged. The wind speed control module 317 can adjust the dust collection wind speed according to the actual situation to achieve the best dust removal effect.
[0044] When the tilting angle of the side plate of the cover 1 needs to be adjusted, the adjustment mechanism 4 is activated. The third motor 42 is powered on and drives the rotating shaft 43 to rotate within the second fixed column 41. The rotation of the rotating shaft 43 drives the adjustment plate 44 to rotate. At the same time, the rotation of the adjustment plate 44 drives the third connecting column 45 to rotate. The third connecting column 45 is hinged to the fourth connecting column 46. The fourth connecting column 46 can rotate between the third connecting columns 45 and drive the connecting rod 47 to move. The connecting rod 47 is hinged to the third fixed column 49 through the fifth connecting column 48, and finally fixed in position with the cover 1 through the third fixed column 49, realizing precise angle adjustment, which facilitates the operator to operate, maintain and observe the processing status of the grinding machine.
[0045] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.
Claims
1. A protective cover for a bearing grinding machine, characterized in that: The device includes a cover (1) for shielding the bearing grinding machine. The inner cavity of the cover (1) is rotatably connected to a fixed shaft (2) for connecting the grinding machine and the cover (1). A dust removal mechanism (3) for dust removal during bearing grinding is fixedly connected at the center of the top of the cover (1). The dust removal mechanism (3) includes a moving component for axially adjusting the position of the connecting pipe assembly and the dust suction assembly, a connecting pipe assembly for connecting the moving component and the dust suction assembly, and a dust suction assembly for controlling the dust removal mechanism (3) to remove dust from the inner cavity of the cover (1). An adjustment mechanism (4) for adjusting the flip angle of the side plate of the cover (1) is fixedly connected to the side end of the cover (1). Two sets of adjustment mechanisms (4) are symmetrically arranged.
2. The bearing grinding machine protective cover according to claim 1, characterized in that: The moving component includes a first fixed post (31), which is fixedly connected to the inner cavity of the cover (1). A first motor (32) is fixedly connected to one end of the first fixed post (31). A screw (33) is threadedly connected to the inner cavity of the first fixed post (31). The screw (33) is electrically connected to the first motor (32) through the first fixed post (31). A moving shaft (34) is fixedly connected to the inner cavity of the first fixed post (31).
3. A bearing grinding machine protective cover according to claim 2, characterized in that: The screw (33) is threadedly connected to a slider (35) on its outer side. The slider (35) is slidably connected to the outer side of the moving shaft (34). The bottom end of the slider (35) is fixedly connected to a second motor (36). The bottom end of the second motor (36) is fixedly connected to a first connecting post (37). The bottom end of the first connecting post (37) is fixedly connected to a vacuum cleaner (38). The vacuum cleaner (38) has a suction groove in its inner cavity, and the suction groove passes through the inner cavity of the first connecting post (37). The vacuum cleaner (38) is electrically connected to the first connecting post (37) and the second motor (36).
4. A bearing grinding machine protective cover according to claim 3, characterized in that: The connecting pipe assembly includes a first pipe (39), which is fixedly connected to one side of the first connecting post (37). The inner cavity of the first pipe (39) is provided with a transmission groove, and the transmission groove corresponds to the dust collection groove. A first connector (310) is fixedly connected to the outside of the first pipe (39). A corrugated pipe (311) is fixedly connected to the inner cavity of the first connector (310). The corrugated pipe (311) is fixedly connected to the first pipe (39) through the first connector (310).
5. A bearing grinding machine protective cover according to claim 4, characterized in that: A second connector (312) is fixedly connected to the outer side of the top end of the corrugated pipe (311). A second pipe (313) is fixedly connected to the inner cavity of the second connector (312). The second pipe (313) is fixedly connected to the corrugated pipe (311) through the second connector (312). The inner cavities of the second pipe (313) and the corrugated pipe (311) are respectively provided with slots corresponding to the transmission groove for conveying dust.
6. A bearing grinding machine protective cover according to claim 5, characterized in that: The vacuuming assembly includes a vacuuming module (314), which is fixedly connected to the end of the second pipe (313) away from the second connector (312). A filter module (315) is fixedly connected to the end of the vacuuming module (314) away from the second pipe (313), and a second connecting post (316) is fixedly connected to the outside of the second pipe (313). A wind speed control module (317) is fixedly connected to one end of the second connecting post (316).
7. A bearing grinding machine protective cover according to claim 1, characterized in that: The adjustment mechanism (4) includes a second fixed column (41), which is fixedly connected to one end of the cover (1). A third motor (42) is fixedly connected to one end of the second fixed column (41). A rotating shaft (43) is rotatably connected to the inner cavity of the second fixed column (41). The rotating shaft (43) is electrically connected to the third motor (42) through the second fixed column (41). An adjustment plate (44) is fixedly connected to the outer side of the rotating shaft (43).
8. A bearing grinding machine protective cover according to claim 7, characterized in that: The adjusting plate (44) is fixedly connected to a third connecting column (45) on the side away from the rotating shaft (43). Two sets of the third connecting columns (45) are symmetrically arranged. A fourth connecting column (46) is hinged between the two sets of symmetrically arranged third connecting columns (45). A connecting rod (47) is fixedly connected to one end of the fourth connecting column (46).
9. A bearing grinding machine protective cover according to claim 8, characterized in that: The end of the connecting rod (47) away from the fourth connecting post (46) is fixedly connected to the fifth connecting post (48), and the outer side of the fifth connecting post (48) is hinged to the third fixing post (49), which is fixedly connected to the top of the cover (1).