A device for measuring the roundness of bearings on water pump shafts

Abstract

This utility model relates to the field of shaft bearing measurement technology, specifically a device for measuring the roundness of water pump shaft bearings. It includes an L-shaped testing platform, a motor located on the lower side of the L-shaped testing platform, a rotating shaft connected to the motor's output end, a lower clamping mechanism connected to one end of the rotating shaft and located within the L-shaped testing platform, a lifting mechanism located on one side of the L-shaped testing platform, a lifting plate connected to the lifting mechanism, an upper rotating clamping mechanism connected to the lower side of the lifting plate, and a two-position adjustment measuring mechanism located on the lower side inside the L-shaped testing platform. The upper rotating clamping mechanism can move vertically along the L-shaped testing platform via the lifting mechanism. This device achieves synchronous clamping and fixing of both ends of the water pump shaft bearing mandrel, which not only improves the stability of the bearing during rotation but also further enhances the accuracy of the measurement results. Furthermore, this device can meet the clamping requirements of water pump shaft bearing mandrels of different lengths and diameters, thereby enhancing its versatility and practicality.

Description

Technical Field

[0001] This utility model relates to the field of shaft bearing measurement technology, specifically a device for measuring the roundness of water pump shaft bearings. Background Technology

[0002] The main function of a water pump shaft is to transmit the torque input from the engine to the impeller and fan, providing the energy required for the impeller and fan to perform their work. Because the water pump shaft simultaneously withstands bending and torque during operation, it is classified as a rotating shaft. In the water pump shaft machining process, a connecting bearing needs to be fitted onto the surface of the shaft. Therefore, the dimensional accuracy of the connecting bearing needs to be high. Consequently, a measuring device is required to measure the roundness of the machined water pump shaft connecting bearing during machining to ensure that the roundness accuracy meets specifications.

[0003] Existing devices for measuring the roundness of pump shaft bearings typically clamp and fix only one end of the bearing during roundness testing, then drive it to rotate for measurement. However, this clamping method easily causes the bearing to wobble during rotation, which adversely affects the accuracy of the measurement results. Furthermore, it is inconvenient to accommodate pump shaft bearings of different lengths or diameters, limiting its versatility and practicality. Utility Model Content

[0004] The purpose of this invention is to provide a device for measuring the roundness of bearings connected to water pump shafts, which solves the problems of existing devices for measuring the roundness of bearings connected to water pump shafts, which only clamp at one end, are prone to shaking during rotation measurement, affecting accuracy, and are inconvenient to clamp bearings of different sizes, thus limiting their versatility and practicality.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a device for measuring the roundness of a water pump shaft bearing, comprising an L-shaped testing platform, a motor disposed on the lower side of the L-shaped testing platform, a rotating shaft connected to the output end of the motor, a lower clamping mechanism connected to one end of the rotating shaft and located within the L-shaped testing platform, a lifting mechanism disposed on one side of the L-shaped testing platform, a lifting plate connected to the lifting mechanism, an upper rotating clamping mechanism connected to the lower side of the lifting plate, and a two-position adjustment measuring mechanism disposed on the lower side inside the L-shaped testing platform. The upper rotating clamping mechanism can move vertically along the L-shaped testing platform via the lifting mechanism. The lower clamping mechanism and the upper rotating clamping mechanism are coaxially arranged along their vertical axis. The two-position adjustment measuring mechanism is located on one side of the lower clamping mechanism.

[0006] Furthermore, the upper rotating clamping mechanism includes a cylindrical cylinder, a second partition plate disposed inside the cylindrical cylinder, a plurality of second open slide grooves disposed on the second partition plate and arranged in a ring at intervals, a second slider that slides in cooperation with the interior of the second open slide grooves, a connecting shell connected to the lower side of the second slider and sliding in cooperation with the lower side of the second partition plate, a clamping roller rotatably connected to the connecting shell, a turntable rotatably connected to the upper side of the second partition plate and located between the plurality of second open slide grooves, a crank connecting rod hinged to the upper side of the second slider and located above the second partition plate, mounting plates respectively disposed on the upper side of one set of two opposing second sliders, and a third electric push rod disposed between the two mounting plates. The other end of the crank connecting rod is hinged to the upper side of the turntable, and the upper side of the cylindrical cylinder is connected to the lower side of the lifting plate.

[0007] Furthermore, the L-shaped detection platform has an installation cavity on one side; the lifting mechanism includes a one-way threaded rod rotatably connected in the installation cavity, a first threaded sleeve threadedly engaged with the one-way threaded rod, and a handwheel connected to one end of the one-way threaded rod and located above the L-shaped detection platform, and one end of the lifting plate is connected to one side of the first threaded sleeve.

[0008] Furthermore, the L-shaped detection platform has a sliding groove on one side that communicates with the mounting cavity, and both sides of the lifting plate slide in cooperation with the inner wall of the sliding groove.

[0009] Furthermore, the lower clamping mechanism includes a circular shell, a first partition plate disposed inside the circular shell, two first open slide grooves disposed on the first partition plate and spaced apart, a bidirectional threaded rod rotatably connected to the inner wall of the circular shell and located below the first partition plate, two second threaded sleeves threadedly engaged with the bidirectional threaded rod and spaced apart, a first slider connected to the upper side of the second threaded sleeves and slidingly engaged with the inside of the first open slide grooves, an arc-shaped clamping plate connected to the upper side of the first slider and slidingly engaged with the upper side of the first partition plate, and a rotating handle connected to one end of the bidirectional threaded rod and located outside the circular shell. The lower side of the circular shell is connected to one end of the rotating shaft.

[0010] Furthermore, the two-position adjustment and measurement mechanism includes a first electric push rod disposed on the upper side inside the L-shaped detection platform, an L-shaped connecting plate connected to one end of the first electric push rod, a second electric push rod connected to one side inside the L-shaped connecting plate, and a roundness measuring probe connected to one end of the second electric push rod.

[0011] Furthermore, the L-shaped detection platform is equipped with support legs at each of its four lower corners.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention, in the process of measuring the roundness of the outer ring of a water pump shaft bearing, achieves synchronous and stable clamping and fixing of both ends of the water pump shaft bearing mandrel through the cooperation of the upper and lower clamping mechanisms. To adapt to water pump shaft bearings of various lengths, a lifting mechanism is provided, which can adjust the distance between the upper and lower clamping mechanisms. Furthermore, this device achieves the measurement of the roundness of the water pump shaft bearing through the coordinated operation of the motor, rotating shaft, upper and lower clamping mechanisms, and two-position adjustment measuring mechanism. This device facilitates the synchronous clamping and fixing of both ends of the water pump shaft bearing mandrel, not only improving the stability of the bearing during rotation and reducing measurement errors caused by shaking, but also improving the accuracy of the measurement results. Moreover, this device can meet the clamping requirements of water pump shaft bearing mandrels of different lengths and diameters, thereby enhancing its versatility and practicality. Attached Figure Description

[0014] Figure 1 This is a cross-sectional schematic diagram of the device for measuring the roundness of water pump shaft bearings according to the present invention.

[0015] Figure 2 This is a cross-sectional schematic diagram of the lower clamping mechanism of this utility model;

[0016] Figure 3 This is a cross-sectional schematic diagram of the upper rotating clamping mechanism of this utility model;

[0017] Figure 4 This is a bottom view of the upper rotating clamping mechanism of this utility model;

[0018] Figure 5 This is a cross-sectional schematic diagram of the upper rotating clamping mechanism of this utility model.

[0019] In the diagram: 1. L-shaped testing platform; 2. Support leg; 3. Mounting cavity; 4. Sliding groove; 5. First electric push rod; 6. L-shaped connecting plate; 7. Second electric push rod; 8. Roundness measuring probe; 9. One-way threaded rod; 10. First threaded sleeve; 11. Handwheel; 12. Lifting plate; 13. Upper rotating clamping mechanism; 14. Lower clamping mechanism; 15. Motor; 16. Rotating shaft; 17. Circular shell; 18. First partition plate; 19. First open sliding groove; 20. Two-way threaded rod; 21. Rotating handle; 22. Second threaded sleeve; 23. First slider; 24. Arc-shaped clamping plate; 25. Circular cylinder; 26. Second partition plate; 27. Second open sliding groove; 28. Connecting shell; 29. ​​Clamping roller; 30. Second slider; 31. Crank connecting rod; 32. Turntable; 33. Mounting plate; 34. Third electric push rod. Detailed Implementation

[0020] Please see Figure 1-5A device for measuring the roundness of a water pump shaft bearing includes an L-shaped testing platform 1, a motor 15 mounted on the lower side of the L-shaped testing platform 1, a rotating shaft 16 connected to the output end of the motor 15, a lower clamping mechanism 14 connected to one end of the rotating shaft 16 and located inside the L-shaped testing platform 1, a lifting mechanism located on one side of the L-shaped testing platform 1, a lifting plate 12 connected to the lifting mechanism, an upper rotating clamping mechanism 13 connected to the lower side of the lifting plate 12, and a two-position adjustment measuring mechanism located on the lower side inside the L-shaped testing platform 1. The upper rotating clamping mechanism 13 can move vertically along the L-shaped testing platform 1 via the lifting mechanism. The lower clamping mechanism 14 and the upper rotating clamping mechanism 13 are coaxially arranged along their vertical axis. The two-position adjustment measuring mechanism is located on one side of the lower clamping mechanism 14. When measuring the roundness of the water pump shaft bearing, firstly, the lower clamping mechanism 14 clamps one end of the bearing spindle. Then, according to the water pump shaft bearing... The actual length of the bearing is determined by adjusting the height of the lifting plate 12 using the lifting mechanism until the other end of the bearing mandrel extends into and is clamped by the upper rotating clamping mechanism 13. After this clamping process is completed, the controller sends a start command to the motor 15, which drives the rotating shaft 16 to start rotating. The rotating shaft 16 drives the water pump shaft bearing, which is fixed by the lower clamping mechanism 14 and the upper rotating clamping mechanism 13, to rotate together. While firmly clamping the mandrel, the upper rotating clamping mechanism 13 also ensures that the bearing can rotate inside it. At this time, the two-position adjustment and measuring mechanism performs circumferential measurement on the water pump shaft bearing. This measuring device realizes the synchronous clamping and fixing of both ends of the water pump shaft bearing mandrel, which not only improves the stability of the bearing during rotation but also further improves the accuracy of the measurement results. In addition, this device can meet the clamping requirements of water pump shaft bearing mandrels of different lengths and diameters, thereby enhancing its versatility and practicality.

[0021] The upper rotary clamping mechanism 13 includes a cylindrical cylinder 25, a second partition 26 connected inside the cylindrical cylinder 25, a plurality of second open slide grooves 27 arranged in a ring on the second partition 26, a second slider 30 slidingly engaged with the interior of the second open slide grooves 27, a connecting shell 28 connected to the lower side of the second slider 30 and slidingly engaged with the lower side of the second partition 26, a clamping roller 29 rotatably connected to the connecting shell 28, a turntable 32 rotatably connected to the upper side of the second partition 26 and located between the plurality of second open slide grooves 27, a crank connecting rod 31 hinged to the upper side of the second slider 30 and located above the second partition 26, mounting plates 33 respectively connected to the upper sides of two opposing second sliders 30, and a third electric push rod 34 mounted between the two mounting plates 33. The other end of the crank connecting rod 31 is hinged to the upper side of the turntable 32, and the upper side of the cylindrical cylinder 25 is connected to the lower side of the lifting plate 12. When the spindle of the water pump shaft bearing extends into the upper rotary clamping mechanism... When the water pump shaft bearing mandrel is in position 13, one end of the mandrel is positioned between multiple clamping rollers 29. Subsequently, the controller sends a start signal to the third electric push rod 34, which then begins to retract. This action pulls the two mounting plates 33 connected to it closer together. At the same time, the crank connecting rod 31 on the mounting plate 33 also moves, causing the turntable 32 to rotate. The rotation of the turntable 32 causes the other two crank connecting rods 31 to move in coordination. As the crank connecting rods 31 rotate, the four second sliders 30 connected to the crank connecting rods 31 begin to slide, pushing the four clamping rollers 29 to move closer to each other in sync, ultimately achieving the clamping of the water pump shaft bearing mandrel. The clamping rollers 29 not only provide sufficient friction to fix the mandrel during clamping, but also reduce frictional resistance when the mandrel rotates, ensuring that the water pump shaft bearing can rotate. This rotating clamping mechanism 13 can not only achieve a stable clamping of the other end of the water pump shaft bearing mandrel, but also ensure its rotation.

[0022] The L-shaped testing platform 1 has an installation cavity 3 on one side; the lifting mechanism includes a one-way threaded rod 9 rotatably connected in the installation cavity 3, a first threaded sleeve 10 threadedly engaged with the one-way threaded rod 9, a handwheel 11 connected to one end of the one-way threaded rod 9 and located above the L-shaped testing platform 1, and one end of the lifting plate 12 connected to one side of the first threaded sleeve 10; when adjusting the height of the lifting plate 12, the handwheel 11 is rotated to drive the one-way threaded rod 9 to rotate, and the first threaded sleeve 10 threadedly engaged with it to achieve lifting movement, thereby driving the lifting plate 12 connected to it to lift, and thus realizing the adjustment of the height of the upper rotating clamping mechanism 13.

[0023] The L-shaped testing platform 1 has a sliding groove 4 on one side that communicates with the side of the mounting cavity 3. Both sides of the lifting plate 12 slide in cooperation with the inner wall of the sliding groove 4. While the lifting plate 12 is raised and lowered, it slides up and down in the sliding groove 4 to prevent the first threaded sleeve 10 and the lifting plate 12 from rotating in the horizontal direction.

[0024] The lower clamping mechanism 14 includes a circular shell 17, a first partition 18 disposed inside the circular shell 17, two first open slide grooves 19 disposed on the first partition 18 and spaced apart, a bidirectional threaded rod 20 rotatably connected to the inner wall of the circular shell 17 and located below the first partition 18, two second threaded sleeves 22 threadedly engaged with the bidirectional threaded rod 20 and spaced apart, a first slider 23 connected to the upper side of the second threaded sleeves 22 and slidingly engaged with the inside of the first open slide grooves 19, an arc-shaped clamping plate 24 connected to the upper side of the first slider 23 and slidingly engaged with the upper side of the first partition 18, and a clamping plate 24 connected to one end of the bidirectional threaded rod 20. The rotating handle 21 is located on the outside of the circular shell 17, and the lower side of the circular shell 17 is connected to one end of the rotating shaft 16. When the lower clamping mechanism 14 fixes the other end of the water pump shaft connecting bearing spindle, one end of the spindle extends into the circular shell 17 and is located between the two arc-shaped clamping plates 24. Rotating the rotating handle 21 drives the bidirectional threaded rod 20 to rotate, and the two second threaded sleeves 22 that are threaded with it move closer to each other. The first slider 23 connected to the second threaded sleeve 22 slides in the first open slide groove 19 at the same time, driving the arc-shaped clamping plate 24 connected to it to move, thereby realizing the clamping and fixing of one end of the water pump shaft connecting bearing spindle.

[0025] The two-position adjustment and measurement mechanism includes a first electric push rod 5 located on the upper side inside the L-shaped detection platform 1, an L-shaped connecting plate 6 connected to one end of the first electric push rod 5, a second electric push rod 7 connected to one side inside the L-shaped connecting plate 6, and a roundness measuring probe 8 connected to one end of the second electric push rod 7. After the water pump shaft bearing is fixed, the controller controls the first electric push rod 5 to start according to the height of the outer ring of the water pump shaft bearing, which drives the L-shaped connecting plate 6, the second electric push rod 7, and the roundness measuring probe 8 to rise and fall. According to the diameter of the outer ring, the controller controls the second electric push rod 7 to start, which drives the roundness measuring probe 8 to contact the outer ring. Then, the roundness of the water pump bearing is measured by its rotation, which facilitates the adjustment of the position of the roundness measuring probe 8 to measure the roundness of the outer ring of the water pump shaft bearing.

[0026] The L-shaped inspection platform 1 is connected to four supporting legs 2 at its lower corners; the four supporting legs 2 provide support for the L-shaped inspection platform 1.

[0027] Working principle: When measuring the roundness of the water pump shaft connecting bearing, firstly, one end of the mandrel extends into the circular housing 17 and is positioned between two arc-shaped clamping plates 24. Rotating the rotary handle 21 causes the bidirectional threaded rod 20 to rotate, bringing the two second threaded sleeves 22, which are threaded with it, closer together. Simultaneously, the first slider 23, connected to the second threaded sleeve 22, slides within the first open slide groove 19, causing the arc-shaped clamping plate 24 connected to it to move, thus clamping and fixing one end of the water pump shaft connecting bearing mandrel. Subsequently, based on the actual length of the water pump shaft connecting bearing, rotating the handwheel 11 causes the unidirectional threaded rod 9 to rotate, and the first threaded sleeve... 10 achieves lifting motion, driving the connected lifting plate 12 to rise and fall until the other end of the bearing spindle extends into the upper rotating clamping mechanism 13. When the spindle of the water pump shaft connected to the bearing extends into the cylindrical cylinder 25 of the upper rotating clamping mechanism 13, one end is located between multiple clamping rollers 29. Subsequently, the controller sends a start signal to the third electric push rod 34, which then begins to retract. This action pulls the two connected mounting plates 33 closer together. At the same time, the crank connecting rod 31 on the mounting plate 33 also moves accordingly, driving the turntable 32 to rotate. The rotation of the turntable 32 drives the other two crank connecting rods 31 to move in coordination. As the crank connecting rod 31 rotates, the four second sliders 30 connected to the crank connecting rod 31 begin to slide, pushing the four clamping rollers 29 to move closer to each other synchronously, ultimately clamping the water pump shaft connecting bearing mandrel. After this clamping process is completed, according to the height of the outer ring of the water pump shaft connecting bearing, the controller controls the first electric push rod 5 to start, driving the L-shaped connecting plate 6, the second electric push rod 7, and the roundness measuring probe 8 to rise and fall. According to the diameter of the outer ring, the controller controls the second electric push rod 7 to start, driving the roundness measuring probe 8 to contact the outer ring. The controller sends a start command to the motor 15, and the motor 15 drives the rotating shaft 16 to start rotating. The pump shaft connecting bearing, which is fixed by the lower clamping mechanism 14 and the upper rotating clamping mechanism 13, rotates together. The upper rotating clamping mechanism 13 not only firmly clamps the mandrel but also ensures that the bearing can rotate inside it. At this time, the roundness measuring probe 8 then performs a circumferential measurement on the outer ring of the pump shaft connecting bearing. This measuring device realizes the synchronous clamping and fixing of both ends of the pump shaft connecting bearing mandrel, which not only improves the stability of the bearing during rotation but also further improves the accuracy of the measurement results. In addition, the device can meet the clamping requirements of pump shaft connecting bearing mandrels of different lengths and diameters, thereby enhancing its versatility and practicality.

[0028] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for measuring the roundness of bearings on a water pump shaft, comprising an L-shaped testing platform (1), characterized in that, It also includes a motor (15) located on the lower side of the L-shaped detection platform (1), a rotating shaft (16) connected to the output end of the motor (15), a lower clamping mechanism (14) connected to one end of the rotating shaft (16) and located inside the L-shaped detection platform (1), a lifting mechanism located on one side of the L-shaped detection platform (1), a lifting plate (12) connected to the lifting mechanism, an upper rotating clamping mechanism (13) connected to the lower side of the lifting plate (12), and a two-position adjustment measuring mechanism located on the lower side inside the L-shaped detection platform (1). The upper rotating clamping mechanism (13) can move along the vertical direction of the L-shaped detection platform (1) through the lifting mechanism. The lower clamping mechanism (14) and the upper rotating clamping mechanism (13) are coaxially arranged on the vertical axis. The two-position adjustment measuring mechanism is located on one side of the lower clamping mechanism (14).

2. The device for measuring the roundness of a water pump shaft bearing as described in claim 1, characterized in that, The upper rotating clamping mechanism (13) includes a cylindrical cylinder (25), a second partition (26) disposed inside the cylindrical cylinder (25), a plurality of second open slide grooves (27) disposed on the second partition (26) and arranged in a ring at intervals, a second slider (30) that slides in cooperation with the interior of the second open slide grooves (27), a connecting shell (28) that is connected to the lower side of the second slider (30) and slides in cooperation with the lower side of the second partition (26), a clamping roller (29) that is rotatably connected to the connecting shell (28), and a clamping roller (29) that is connected to the upper side of the second partition (26). A turntable (32) is rotatably connected and located between multiple second open slide grooves (27), a crank connecting rod (31) is hinged to the upper side of the second slider (30) and located above the second partition plate (26), mounting plates (33) are respectively provided on the upper side of one of the two opposing second sliders (30), and a third electric push rod (34) is provided between the two mounting plates (33). The other end of the crank connecting rod (31) is hinged to the upper side of the turntable (32), and the upper side of the cylindrical tube (25) is connected to the lower side of the lifting plate (12).

3. The device for measuring the roundness of a water pump shaft bearing as described in claim 1, characterized in that, The L-shaped testing platform (1) has an installation cavity (3) on one side inside; the lifting mechanism includes a one-way threaded rod (9) rotatably connected in the installation cavity (3), a first threaded sleeve (10) threadedly engaged with the one-way threaded rod (9), a handwheel (11) connected to one end of the one-way threaded rod (9) and located above the L-shaped testing platform (1), and one end of the lifting plate (12) is connected to one side of the first threaded sleeve (10).

4. The device for measuring the roundness of a water pump shaft bearing as described in claim 3, characterized in that, The L-shaped detection platform (1) has a sliding groove (4) on one side that communicates with one side of the mounting cavity (3), and both sides of the lifting plate (12) slide in cooperation with the inner wall of the sliding groove (4).

5. The device for measuring the roundness of a water pump shaft bearing as described in claim 1, characterized in that, The lower clamping mechanism (14) includes a circular shell (17), a first partition (18) disposed inside the circular shell (17), two first open slide grooves (19) disposed on the first partition (18) and spaced apart, a bidirectional threaded rod (20) rotatably connected to the inner wall of the circular shell (17) and located below the first partition (18), two second threaded sleeves (22) threadedly engaged with the bidirectional threaded rod (20) and spaced apart, a first slider (23) connected to the upper side of the second threaded sleeves (22) and slidingly engaged with the inside of the first open slide grooves (19), an arc-shaped clamping plate (24) connected to the upper side of the first slider (23) and slidingly engaged with the upper side of the first partition (18), and a rotating handle (21) connected to one end of the bidirectional threaded rod (20) and located outside the circular shell (17). The lower side of the circular shell (17) is connected to one end of the rotating shaft (16).

6. The device for measuring the roundness of a water pump shaft bearing as described in claim 1, characterized in that, The two-position adjustment and measurement mechanism includes a first electric push rod (5) located on the upper side inside the L-shaped detection platform (1), an L-shaped connecting plate (6) connected to one end of the first electric push rod (5), a second electric push rod (7) connected to one side inside the L-shaped connecting plate (6), and a roundness measuring probe (8) connected to one end of the second electric push rod (7).

7. The device for measuring the roundness of a water pump shaft bearing as described in claim 1, characterized in that, The L-shaped testing platform (1) is equipped with support legs (2) at the four lower corners.

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