Water pump shaft grinding device

Abstract

The utility model relates to the technical field of water pump shaft production, and discloses a water pump shaft grinding device which comprises a first supporting plate, a second supporting plate, a first rotating shaft, a first linear sliding table, a third supporting plate, a second rotating shaft, a three-jaw chuck, a grinding wheel and a driving part. In the using process, after the water pump shaft is clamped between the two three-jaw chucks, the driving part is controlled to work, the first rotating shaft can rotate, and then the three-jaw chuck connected with the first rotating shaft is driven to rotate. And then the water pump shaft, the other three-jaw chuck and the second rotating shaft are driven to rotate synchronously. And the grinding wheel is matched with the grinding wheel to finish the grinding work of the water pump shaft. Moreover, compared with the mode that two motors are adopted to drive the water pump shaft to rotate, the phenomenon that the two motors rotate asynchronously can be avoided. Therefore, the motor is prevented from being damaged due to asynchronous rotation, the hidden trouble is eliminated, and the manufacturing cost is reduced.

Description

Technical Field

[0001] This application relates to the technical field of water pump shaft production, for example, it relates to a grinding device for a water pump shaft. Background Art

[0002] At present, in order to make the surface of the water pump shaft smoother, it is necessary to polish it using polishing equipment. A grinding machine for water pump shaft production disclosed in the related technology (publication number: CN218225825U) includes a machine base, a lifting and moving seat, a servo motor, a grinding wheel, a telescopic clamping assembly, and a water pump shaft. A lifting and moving seat is connected to the machine base, a servo motor is fixed on the top of the lifting and moving seat, and a grinding wheel is connected to the connecting end of the servo motor. Telescopic clamping assemblies are fixed on both sides of the top surface of the machine base. The two telescopic clamping assemblies are arranged mirror-symmetrically, and a water pump shaft is clamped between the two telescopic clamping assemblies. The telescopic clamping assembly includes a fixed seat, an electric telescopic rod, a round seat, a motor, and a clamping cylinder. The fixed seat is fixed on the top surface of the machine base, an electric telescopic rod is fixed on the top of the fixed seat, a round seat is connected to the connecting end of the electric telescopic rod, a motor is fixed on the side surface of the round seat, and a clamping cylinder is connected to the connecting end of the motor.

[0003] In the process of implementing the above embodiments, it is found that at least the following problems exist in the related technology:

[0004] It clamps and fixes the water pump shaft through the clamping cylinders of the telescopic clamping assemblies located at both ends of the water pump shaft, and drives the rotating shaft to rotate through the motors of the telescopic clamping assemblies located at both ends of the water pump shaft, so as to be able to grind the surface of the water pump shaft. However, when any one of the motors of the telescopic clamping assemblies at both ends loses steps, the two motors will rotate out of sync, easily causing damage to the motors and posing a potential fault hazard.

[0005] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Utility Model

[0006] To have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. The summary is not a general review, nor is it intended to identify key / important constituent elements or delineate the protection scope of these embodiments, but rather serves as a preface to the subsequent detailed description.

[0007] The embodiments of the present disclosure provide a grinding device for a water pump shaft to eliminate potential fault hazards.

[0008] In some embodiments, the water pump shaft grinding device includes: a first support plate; a second support plate connected to the first support plate; a first rotating shaft rotatably passing through the second support plate; a first linear slide mounted on the first support plate along the length direction of the first support plate, with the first linear slide and the second support plate located on both sides of the first support plate; a third support plate connected to the moving end of the first linear slide; a second rotating shaft rotatably mounted on the third support plate, with the center line of the second rotating shaft coinciding with the center line of the first rotating shaft; three-jaw chucks respectively mounted on the opposite ends of the first rotating shaft and the second rotating shaft for clamping both ends of the water pump shaft; a grinding wheel for grinding the water pump shaft; and a driving part mounted between the first support plate and the first rotating shaft and configured to drive the first rotating shaft to rotate relative to the first support plate.

[0009] Optionally, the driving part includes: a motor mounted on the first support plate; a driving gear mounted on the rotating end of the motor; a driven gear mounted on the first rotating shaft and meshed with the driving gear; wherein the diameter of the driving gear is smaller than the diameter of the driven gear.

[0010] Optionally, it further includes: a first driving member connected to the grinding wheel for driving the grinding wheel to rotate; a second driving member connected between the first driving member and the first support plate for driving the first driving member to move linearly.

[0011] Optionally, the first driving member includes: a motor fixing seat connected to the second driving member; an electric motor mounted on the motor fixing seat, and the grinding wheel is connected to the rotating end of the electric motor.

[0012] Optionally, the second driving member includes: a support rod with one end connected to the first support plate; a fourth support plate connected to the other end of the support rod; a second linear slide mounted on the fourth support plate along the axial direction of the water pump shaft; a fifth support plate connected to the moving end of the second linear slide; and an electric telescopic rod mounted on the fifth support plate along the radial direction of the water pump shaft; wherein the motor fixing seat is mounted on the moving end of the electric telescopic rod.

[0013] Optionally, it further includes: a first bearing seat mounted on the second support plate and located outside the first rotating shaft; and a first bearing mounted between the first bearing seat and the first rotating shaft.

[0014] Optionally, it further includes: a first sealing cover mounted on the end of the first bearing seat and abutted against the first bearing.

[0015] Optionally, it further includes: a second bearing seat, installed on the third support plate and located outside the second rotating shaft; a second bearing, installed between the second bearing seat and the second rotating shaft.

[0016] Optionally, it further includes: a second sealing cover, installed at the end of the second bearing seat and abutted against the second bearing.

[0017] A water pump shaft grinding device provided by an embodiment of the present disclosure can achieve the following technical effects:

[0018] A water pump shaft grinding device provided by an embodiment of the present disclosure includes a first support plate, a second support plate, a first rotating shaft, a first linear slide, a third support plate, a second rotating shaft, a three-jaw chuck, a grinding wheel, and a driving part. The first support plate is used to support the entire device. The second support plate is connected to the first support plate and is used to support and install the rotatable first rotating shaft. The first rotating shaft rotatably penetrates through the second support plate and can perform a rotational movement relative to the second support plate. The first linear slide is installed on the first support plate along the length direction of the first support plate and is used to provide a driving force. The third support plate is connected to the moving end of the first linear slide and moves along the length direction of the first support plate under the drive of the first linear slide. The second rotating shaft is rotatably installed on the third support plate and can perform a rotational movement relative to the third support plate. The three-jaw chucks are respectively installed at the opposite ends of the first rotating shaft and the second rotating shaft and are used to clamp both ends of the water pump shaft. The grinding wheel is used to grind the surface of the water pump shaft to make the surface of the water pump smoother. The driving part is installed between the first support plate and the first rotating shaft and is used to provide a driving force to drive the first rotating shaft to perform a rotational movement relative to the first support plate.

[0019] During the use process, controlling the first linear slide to work can drive the third support plate to perform a linear movement. Further drive the second rotating shaft to move, so as to adjust the distance between the two three-jaw chucks. So as to be able to clamp and fix water pump shafts of different lengths, and further be able to perform grinding treatment on water pump shafts of different lengths. After the water pump shaft is clamped between the two three-jaw chucks, controlling the driving part to work can make the first rotating shaft perform a rotational movement, and further drive the three-jaw chuck connected to the first rotating shaft to perform a rotational movement. Further drive the water pump shaft, the other three-jaw chuck, and the second rotating shaft to rotate synchronously. Cooperating with the grinding wheel to work can complete the grinding work of the water pump shaft. And, compared with the method of using two motors to drive the water pump shaft to perform a rotational movement, the phenomenon of asynchronous rotation of the two motors can be avoided. Thus, the damage of the motor due to asynchronous rotation can be avoided, eliminating the potential trouble of the fault, and at the same time reducing the manufacturing cost.

[0020] The above general description and the following description are only exemplary and explanatory and are not used to limit this application. Description of the Drawings

[0021] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations and the drawings do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation, and wherein:

[0022] Figure 1 is a schematic cross-sectional structure diagram of a water pump shaft grinding device provided by an embodiment of the present disclosure;

[0023] Figure 2 is Figure 1 an enlarged structure diagram at position A in

[0024] Figure 3 is Figure 1 an enlarged structure diagram at position B in

[0025] Figure 4 is a schematic front view structure diagram of a water pump shaft grinding device provided by an embodiment of the present disclosure.

[0026] Reference numerals:

[0027] 1: First support plate; 2: Second support plate; 3: First rotating shaft; 4: First linear slide; 5: Third support plate; 6: Second rotating shaft; 7: Three-jaw chuck; 8: Grinding wheel; 9: Motor; 10: Motor fixing seat; 11: Electric motor; 12: Support rod; 13: Fourth support plate; 14: Second linear slide; 15: Fifth support plate; 16: Electric telescopic rod; 17: First bearing seat; 18: First bearing; 19: First sealing cover; 20: Second bearing seat; 21: Second bearing; 22: Second sealing cover. Detailed implementation manners

[0028] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the drawings. The attached drawings are only for reference and illustration purposes and are not used to limit the embodiments of the present disclosure. In the following technical descriptions, for the sake of explanation, multiple details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be shown in a simplified manner.

[0029] The terms "first", "second", etc. in the specification, claims and above-mentioned drawings of the embodiments of the present disclosure are used to distinguish similar objects and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to implement the embodiments of the present disclosure described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0030] In the embodiments of the present disclosure, the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "middle", "outer", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and their embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation. Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0031] In addition, the terms "arranged", "connected", "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0032] Unless otherwise specified, the term "plurality" means two or more.

[0033] In the embodiments of the present disclosure, the character " / " means that the objects before and after are in an "or" relationship. For example, A / B means: A or B.

[0034] The term "and / or" is a description of the associated relationship of an object, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B these three relationships.

[0035] It should be noted that, without conflict, the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

[0036] Combined with Figures 1 to 4As shown in the figure, an embodiment of the present disclosure provides a grinding device for a water pump shaft, including a first support plate 1, a second support plate 2, a first rotating shaft 3, a first linear slide 4, a third support plate 5, a second rotating shaft 6, a three-jaw chuck 7, a grinding wheel 8 and a driving part. The second support plate 2 is connected to the first support plate 1. The first rotating shaft 3 is rotatably inserted through the second support plate 2. The first linear slide 4 is installed on the first support plate 1 along the length direction of the first support plate 1, and the first linear slide 4 and the second support plate 2 are located on both sides of the first support plate 1. The third support plate 5 is connected to the moving end of the first linear slide 4. The second rotating shaft 6 is rotatably installed on the third support plate 5, and the center line of the second rotating shaft 6 coincides with the center line of the first rotating shaft 3. The three-jaw chucks 7 are respectively installed at the opposite ends of the first rotating shaft 3 and the second rotating shaft 6 for clamping both ends of the water pump shaft. The grinding wheel 8 is used for grinding the water pump shaft. The driving part is installed between the first support plate 1 and the first rotating shaft 3 and is configured to drive the first rotating shaft 3 to perform a rotational motion relative to the first support plate 1.

[0037] A grinding device for a water pump shaft provided by an embodiment of the present disclosure includes a first support plate 1, a second support plate 2, a first rotating shaft 3, a first linear slide 4, a third support plate 5, a second rotating shaft 6, a three-jaw chuck 7, a grinding wheel 8 and a driving part. The first support plate 1 is used to support the entire device. The second support plate 2 is connected to the first support plate 1 and is used to support and install the rotatable first rotating shaft 3. The first rotating shaft 3 is rotatably inserted through the second support plate 2 and can perform a rotational motion relative to the second support plate 2. The first linear slide 4 is installed on the first support plate 1 along the length direction of the first support plate 1 and is used to provide driving force. The third support plate 5 is connected to the moving end of the first linear slide 4 and moves along the length direction of the first support plate 1 under the drive of the first linear slide 4. The second rotating shaft 6 is rotatably installed on the third support plate 5 and can perform a rotational motion relative to the third support plate 5. The three-jaw chucks 7 are respectively installed at the opposite ends of the first rotating shaft 3 and the second rotating shaft 6 for clamping both ends of the water pump shaft. The grinding wheel 8 is used for grinding the surface of the water pump shaft to make the surface of the water pump smoother. The driving part is installed between the first support plate 1 and the first rotating shaft 3 and is used to provide driving force to drive the first rotating shaft 3 to perform a rotational motion relative to the first support plate 1.

[0038] During use, controlling the first linear slide 4 to work can drive the third support plate 5 to move linearly. Further drive the second rotating shaft 6 to move, so as to adjust the distance between the two three-jaw chucks 7 on both sides. So as to be able to clamp and fix water pump shafts of different lengths, and then be able to grind water pump shafts of different lengths. After the water pump shaft is clamped between the two three-jaw chucks 7, controlling the driving part to work can make the first rotating shaft 3 rotate, and then drive the three-jaw chuck 7 connected to the first rotating shaft 3 to rotate. Further drive the water pump shaft, the other three-jaw chuck 7 and the second rotating shaft 6 to rotate synchronously. Cooperating with the grinding wheel 8 to work can complete the grinding work of the water pump shaft. And, compared with the method of using two motors to drive the water pump shaft to rotate, the phenomenon of asynchronous rotation of the two motors can be avoided. Thus, the damage of the motor due to asynchronous rotation can be avoided, the potential failure hazards are eliminated, and at the same time, the manufacturing cost is reduced.

[0039] Optionally, in combination with Figure 1 and Figure 4 As shown, the driving part includes a motor 9, a driving gear and a driven gear. The motor 9 is installed on the first support plate 1. The driving gear is installed on the rotating end of the motor 9. The driven gear is installed on the first rotating shaft 3 and is meshed with the driving gear. Among them, the diameter of the driving gear is smaller than that of the driven gear.

[0040] In the embodiment of the present disclosure, the driving part includes a motor 9, a driving gear and a driven gear. The motor 9 is used to provide driving force, and the driving gear and the driven gear are used to transmit the driving force. During use, controlling the motor 9 to work can drive the driving gear to rotate. Through the meshing effect, the driven gear can be driven to rotate. Further drive the first rotating shaft 3 to rotate, and finally make the water pump shaft rotate. And, adopting the design that the diameter of the driving gear is smaller than that of the driven gear can play a role in reducing the speed, so as to increase the output torque.

[0041] Optionally, in combination with Figure 1 and Figure 4 As shown, it further includes a first driving member and a second driving member. The first driving member is connected to the grinding wheel 8 to drive the grinding wheel 8 to rotate. The second driving member is connected between the first driving member and the first support plate 1 to drive the first driving member to move linearly.

[0042] In the embodiment of the present disclosure, it further includes a first driving member connected to the grinding wheel 8 and a second driving member connected between the first driving member and the first support plate 1. The first driving member is used to drive the grinding wheel 8 to rotate so as to be able to grind the surface of the water pump shaft. The second driving member is used to drive the first driving member to move linearly so that the grinding wheel 8 moves to the position where the water pump shaft is located and moves along the axial direction of the water pump shaft.

[0043] Optionally, in combination withFigure 1 and Figure 4 As shown in Figure 4 , the first driving member includes a motor fixing base 10 and an electric motor 11. The motor fixing base 10 is connected to the second driving member. The electric motor 11 is installed on the motor fixing base 10, and the grinding wheel 8 is connected to the rotating end of the electric motor 11.

[0044] In the embodiment of the present disclosure, the first driving member includes a motor fixing base 10 connected to the second driving member and an electric motor 11 installed on the motor fixing base 10. During use, by controlling the operation of the electric motor 11, the grinding wheel 8 can be driven to rotate, thereby performing a grinding process on the surface of the water pump shaft.

[0045] Optionally, as shown in Figure 1 and Figure 4 Figure 4 , the second driving member includes a support rod 12, a fourth support plate 13, a second linear slide 14, a fifth support plate 15, and an electric telescopic rod 16. One end of the support rod 12 is connected to the first support plate 1. The fourth support plate 13 is connected to the other end of the support rod 12. The second linear slide 14 is installed on the fourth support plate 13 along the axial direction of the water pump shaft. The fifth support plate 15 is connected to the moving end of the second linear slide 14. The electric telescopic rod 16 is installed on the fifth support plate 15 along the radial direction of the water pump shaft. Among them, the motor fixing base 10 is installed on the moving end of the electric telescopic rod 16.

[0046] In the embodiment of the present disclosure, the second driving member includes a support rod 12, a fourth support plate 13, a second linear slide 14, a fifth support plate 15, and an electric telescopic rod 16. One end of the support rod 12 is connected to the first support plate 1 and the other end is connected to the fourth support plate 13 to determine the relative positions of the first support plate 1 and the fourth support plate 13. The second linear slide 14 is installed on the fourth support plate 13 along the axial direction of the water pump shaft to provide driving force. The fifth support plate 15 is connected to the moving end of the second linear slide 14 and moves along the axial direction of the water pump shaft under the drive of the second linear slide 14. The electric telescopic rod 16 is installed on the fifth support plate 15 along the radial direction of the water pump shaft to provide driving force. The motor fixing base 10 is installed on the moving end of the electric telescopic rod 16 and moves along the radial direction of the water pump shaft under the drive of the electric telescopic rod 16. During use, by controlling the operation of the second linear slide 14, the grinding wheel 8 can be moved along the axial direction of the water pump shaft so as to be able to grind the entire surface of the water pump shaft. By controlling the operation of the electric telescopic rod 16, the grinding wheel 8 can be moved along the radial direction of the water pump shaft, enabling the grinding wheel 8 to move to the position where the water pump is located and adjusting the grinding amount of the grinding wheel 8.

[0047] Optionally, as shown in Figure 1 and Figure 2As shown, it further includes a first bearing seat 17 and a first bearing 18. The first bearing seat 17 is installed on the second support plate 2 and is located outside the first rotating shaft 3. The first bearing 18 is installed between the first bearing seat 17 and the first rotating shaft 3.

[0048] In the embodiment of the present disclosure, it further includes a first bearing seat 17 and a first bearing 18. The first bearing seat 17 is installed on the second support plate 2, used to support and install the first bearing 18 and perform radial limit on the first bearing 18. The first bearing 18 is used to support and install the first rotating shaft 3, reduce the friction force received by the first rotating shaft 3, and improve the rotation accuracy of the first rotating shaft 3.

[0049] Optionally, in combination with Figure 1 and Figure 2 As shown, it further includes a first sealing cover 19. The first sealing cover 19 is installed at the end of the first bearing seat 17 and abuts against the first bearing 18.

[0050] In the embodiment of the present disclosure, it further includes a first sealing cover 19 installed at the end of the first bearing seat 17 and abutting against the first bearing 18. The first sealing cover 19 is used to play a role in sealing and protection and perform axial limit on the first bearing 18.

[0051] Optionally, in combination with Figure 1 and Figure 3 As shown, it further includes a second bearing seat 20 and a second bearing 21. The second bearing seat 20 is installed on the third support plate 5 and is located outside the second rotating shaft 6. The second bearing 21 is installed between the second bearing seat 20 and the second rotating shaft 6.

[0052] In the embodiment of the present disclosure, it further includes a second bearing seat 20 and a second bearing 21. The second bearing seat 20 is installed on the third support plate 5, used to support and install the second bearing 21 and perform radial limit on the second bearing 21. The second bearing 21 is used to support and install the second rotating shaft 6, reduce the friction force received by the second rotating shaft 6, and improve the rotation accuracy of the second rotating shaft 6.

[0053] Optionally, in combination with Figure 1 and Figure 3 As shown, it further includes a second sealing cover 22. The second sealing cover 22 is installed at the end of the second bearing seat 20 and abuts against the second bearing 21.

[0054] In the embodiment of the present disclosure, it further includes a second sealing cover 22 installed at the end of the second bearing seat 20 and abutting against the second bearing 21. The second sealing cover 22 is used to play a role in sealing and protection and perform axial limit on the second bearing 21.

[0055] The foregoing description and drawings sufficiently illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural as well as other changes. The embodiments represent merely possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A water pump shaft grinding device, characterized in that: include: a first support plate; A second support plate connected to the first support plate; A first rotating shaft rotatably disposed on the second supporting plate; A first linear slide is installed on the first support plate along the length direction of the first support plate, and the first linear slide and the second support plate are located on both sides of the first support plate; a third support plate connected to the moving end of the first linear slide; A second rotating shaft is rotatably mounted on the third supporting plate, wherein a center line of the second rotating shaft coincides with a center line of the first rotating shaft; Three-jaw chucks are respectively mounted on opposite ends of the first rotating shaft and the second rotating shaft, and are used to clamp both ends of the water pump shaft; A grinding wheel, used for grinding the water pump shaft; The driving unit is installed between the first supporting plate and the first rotating shaft, and is configured to drive the first rotating shaft to perform rotational motion relative to the first supporting plate.

2. A water pump shaft grinding device according to claim 1, characterized in that: The driving unit comprises: A motor, mounted on the first supporting plate; A driving gear, mounted on the rotating end of the motor; A driven gear is mounted on the first rotating shaft and meshes with the driving gear; Wherein, the diameter size of the driving gear is smaller than the diameter size of the driven gear.

3. A water pump shaft grinding device according to claim 1, characterized in that: Also includes: A first driving member, connected to the grinding wheel, for driving the grinding wheel to rotate; The second driving member is connected between the first driving member and the first supporting plate, and is used for driving the first driving member to move linearly.

4. A water pump shaft grinding device according to claim 3, characterized in that: The first driving member comprises: A motor fixing seat connected to the second driving member; The electric motor is mounted on the motor fixing seat, and the grinding wheel is connected to the rotating end of the electric motor.

5. A water pump shaft grinding device according to claim 4, characterized in that: The second driving member comprises: A support rod, one end of which is connected to the first support plate; A fourth support plate connected to the other end of the support rod; A second linear slide is mounted on the fourth support plate along the axial direction of the water pump shaft; a fifth support plate connected to the moving end of the second linear slide; An electric telescopic rod, mounted on the fifth support plate along the radial direction of the water pump shaft; Wherein, the motor fixing seat is installed on the moving end of the electric telescopic rod.

6. A water pump shaft grinding device according to any one of claims 1 to 5, characterized in that: Also includes: A first bearing seat, mounted on the second support plate and located outside the first rotating shaft; The first bearing is installed between the first bearing seat and the first rotating shaft.

7. A water pump shaft grinding device according to claim 6, characterized in that: Also includes: The first sealing cover is installed at the end of the first bearing seat and abuts against the first bearing.

8. A water pump shaft grinding device according to any one of claims 1 to 5, characterized in that: Also includes: A second bearing seat, mounted on the third support plate and located outside the second rotating shaft; The second bearing is installed between the second bearing seat and the second rotating shaft.

9. A water pump shaft grinding device according to claim 8, characterized in that: Also includes: The second sealing cover is installed at the end of the second bearing seat and abuts against the second bearing.

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