A magnetic force pump shaft core stability performance detection equipment

Abstract

The application relates to the technical field of magnetic force pump detection, in particular to a magnetic force pump shaft core stability performance detection equipment, which comprises a fixing base and a workbench, a rotor fixing support is arranged on the workbench, a rotary driver is further arranged on the workbench, the rotary driver is in transmission connection with a rotor part through a universal coupling, four offset detection units are fixedly installed on the fixing base, the offset detection units comprise micrometers and sliding seats, the micrometers are slidably installed on the sliding seats, the micrometers on one of the sliding seats move along the axial direction of the rotor part fixed by the rotor fixing support, the micrometers on the remaining sliding seats move along the radial direction of the rotor part, and a vibration simulation unit is further arranged on the fixing base. The technical scheme detects whether the rotor part produces axial and radial offsets when rotating through the micrometers, and the vibration simulation unit is used for driving the workbench and the rotor part fixed by the rotor fixing support on the workbench to vibrate.

Description

Technical Field

[0001] This invention relates to the field of magnetic pump testing technology, specifically to a device for testing the stability performance of a magnetic pump shaft. Background Technology

[0002] A magnetic drive pump is a seal-free and leak-free pump. It consists of three parts: a pump, a permanent magnet coupling, and a drive motor. The motor directly drives the outer rotor of the permanent magnet coupling. The magnetic field of the magnet on the outer rotor passes through the isolation sleeve and acts on the inner rotor magnet. The inner rotor magnet drives the pump shaft to drive the impeller inside the pump body to rotate. The stationary isolation sleeve installed between the inner and outer magnetic rotors ensures that there is no leakage of the medium inside the pump.

[0003] Because magnetic pumps use a closed structure, loose rotor components can cause media leakage and potentially lead to fire. To prevent such accidents, it is necessary to test whether the rotor of the magnetic pump will experience axial and radial movement during operation. Summary of the Invention

[0004] To address the aforementioned issues, it is necessary to provide a magnetic pump shaft core stability testing device that addresses the problems of existing technologies.

[0005] To solve the problems of the prior art, the technical solution adopted by the present invention is as follows:

[0006] A magnetic pump shaft stability testing device includes a fixed base with a horizontal worktable on it. A rotor fixing bracket is mounted on the worktable to stabilize the rotor's axis in a horizontal direction. A rotary driver is also mounted on the worktable, connected to the rotor via a universal coupling, and drives the rotor to rotate. Four offset detection units are fixedly mounted on the fixed base. Each offset detection unit includes a dial indicator and a sliding seat. The dial indicator is slidably mounted on the sliding seat. One dial indicator on the sliding seat moves along the axial direction of the rotor fixed by the rotor fixing bracket, while the dial indicators on the other sliding seats move radially along the rotor. The working end of the dial indicator passes through clearance holes on the fixed base and worktable to contact the surface of the rotor. The dial indicator is used to detect the axial and radial offset of the rotor during operation. A vibration simulation unit is also mounted on the fixed base to drive the worktable and the rotor fixed by the rotor fixing bracket on the worktable to vibrate.

[0007] Preferably, a slide plate is slidably mounted on the sliding seat, the slide plate moves along the length of the sliding seat, and the dial indicator is fixedly connected to the slide plate; an adjusting screw is screwed onto the sliding seat, one end of the adjusting screw is connected to the slide plate, and the adjusting screw drives the slide plate and the dial indicator to move.

[0008] Preferably, the sliding seat is slidably mounted in a slide rail provided on the fixed seat, the horizontal section of the slide rail extends along the axis of the rotor part, and the vertical section of the slide rail extends in a vertical direction perpendicular to the axis of the rotor part.

[0009] Preferably, the sliding seat has protruding positioning screws on both sides, the positioning screws are inserted into the waist-shaped holes of the slide rail, the waist-shaped holes extend along the moving direction of the sliding seat, and positioning nuts are screwed on the positioning screws to fix the position of the sliding seat on the slide rail.

[0010] Preferably, the rotor fixing bracket includes at least one base slidably mounted on the workbench. The base is provided with a "V"-shaped lower clamping plate and an upper clamping plate. The openings of the lower clamping plate and the upper clamping plate are arranged opposite each other, and the lower clamping plate and the upper clamping plate are staggered to clamp the outer wall of the rotor part. A rotating wheel is installed on the inner wall of the lower clamping plate and the upper clamping plate, and the rotation axis of the rotating wheel is parallel to the rotation axis of the rotor part.

[0011] Preferably, the base has vertically upward-extending threaded rods on both sides, which are helically inserted into both sides of the lower clamping plate. Each threaded rod is helically fitted with a locking nut, which is located on the upper and lower sides of the lower clamping plate to fix the lower clamping plate.

[0012] Preferably, a guide rod extending vertically upward is provided on the lower clamping plate, and a guide hole is provided on the upper clamping plate that is in the same straight line as the axis of the guide rod. The guide rod is inserted into the guide hole. A spring is sleeved on the guide rod, and the spring elastically connects the lower clamping plate and the upper clamping plate. The spring applies a spring force to move the upper clamping plate downward.

[0013] Preferably, a plurality of vertically extending guide rods are provided below the worktable, the guide rods are inserted into guide sleeves provided at the bottom of the fixed base, and a first linear actuator is fixedly installed on the guide sleeves. The working end of the first linear actuator moves along the axis of the guide rod. The vibration simulation unit includes a vibration generator fixedly installed on one side of the fixed base. A horizontal vibration connecting plate is fixedly installed on the working end of the vibration generator. The first linear actuator drives the worktable to move upward and connect with the vibration connecting plate to vibrate synchronously in the vertical direction.

[0014] Preferably, the vibrating connecting plate is provided with a second linear actuator at both ends, the working end of the second linear actuator moves along the length direction of the vibrating connecting plate, and the working end of the second linear actuator is provided with a plug rod; the worktable is provided with insert sleeves at both ends, and the plug rod is inserted into the insert sleeve to connect the vibrating connecting plate and the worktable.

[0015] Preferably, a shock-absorbing pad is provided at the mounting point of the vibration generator and the fixed base.

[0016] The advantages of this invention compared to the prior art are:

[0017] Firstly, the offset detection unit of the present invention generates a value by having the working end of the dial indicator attached to the outer wall of the rotor part. Thus, when the rotary driver drives the rotor part to rotate, the movement of the working end of the dial indicator is used to detect whether the rotor part has axial and radial offset during rotation. The position of the dial indicator on the sliding seat is adjustable, thereby ensuring that the initial value of the dial indicator is negative, and ensuring that the offset of the rotor part in any direction can be effectively detected.

[0018] Secondly, in this invention, the lower clamping plate of the rotor fixing bracket can move vertically to change its own height position and the axial position of the rotor part placed on the lower clamping plate, so that when different models of rotor parts are tested, they can all fall within the detection range of the offset detection unit. The lower clamping plate is provided with a vertical guide rod, and the upper clamping plate is inserted into the guide rod and elastically connected to the lower clamping plate through a spring. The spring applies a spring force to move the upper clamping plate downward, so that the upper clamping plate of the rotor fixing bracket holds the rotor part by the spring force. When the rotary driver drives the rotor part to rotate, the rotor offset can drive the upper clamping plate to stretch the spring and move, thereby ensuring that the offset of the rotor part can be detected by the offset detection unit.

[0019] Thirdly, when the vibration simulation unit in this invention vibrates the workbench and the rotor part fixed by the rotor fixing bracket on the workbench, the working end of the workbench and the offset detection unit are separated to avoid affecting the working end of the offset detection unit during vibration, and also to avoid secondary adjustment of the offset detection unit. The vibration generator and the fixed base are provided with shock-absorbing pads to avoid the vibration generator having a large impact on the fixed base, thereby affecting the position of the dial indicator and sliding seat of the offset detection unit installed on the fixed base, and ensuring the detection accuracy of the offset detection unit after the rotor part vibrates. Attached Figure Description

[0020] Figure 1 This is a front view of a magnetic pump shaft core stability performance testing device under testing conditions.

[0021] Figure 2 This is a front view of a magnetic pump shaft core stability performance testing device under vibration conditions.

[0022] Figure 3 A three-dimensional magnetic pump shaft core stability testing device Figure 1 ;

[0023] Figure 4 A three-dimensional magnetic pump shaft core stability testing device Figure 2 ;

[0024] Figure 5 yes Figure 4 A magnified view of part A;

[0025] Figure 6 This is an exploded three-dimensional structural diagram of a magnetic pump shaft core stability performance testing device.

[0026] Figure 7 This is a three-dimensional view of a rotor fixing bracket for a magnetic pump shaft core stability performance testing device;

[0027] Figure 8 This is a three-dimensional view of the offset detection unit of a magnetic pump shaft core stability performance testing device.

[0028] The diagram is labeled as follows: 1. Fixed seat; 11. Clearance hole; 12. Slide rail; 121. Waist-shaped hole; 13. Guide sleeve; 14. First linear actuator; 15. Shock-absorbing pad; 2. Worktable; 21. Guide rod; 22. Insert sleeve; 3. Rotor fixing bracket; 31. Base; 311. Threaded rod; 312. Locking nut; 32. Lower clamping plate; 321. Rotary wheel; 322. Guide rod; 323. Spring; 33. Upper clamping plate; 331. Guide hole; 4. Rotary actuator; 41. Universal coupling; 5. Offset detection unit; 51. Dial indicator; 52. Sliding seat; 521. Slide plate; 522. Adjusting screw; 523. Positioning screw; 524. Positioning nut; 6. Vibration simulation unit; 61. Vibration generator; 62. Vibration connecting plate; 621. Second linear actuator; 622. Insert rod. Detailed Implementation

[0029] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0030] Reference Figures 1 to 8 As shown:

[0031] A magnetic pump shaft stability testing device includes a fixed base 1, a horizontal worktable 2 mounted on the fixed base 1, a rotor fixing bracket 3 mounted on the worktable 2 to stabilize the axis of the rotor in a horizontal direction, a rotary driver 4 mounted on the worktable 2, the rotary driver 4 being connected to the rotor via a universal coupling 41 and used to drive the rotor to rotate; four offset detection units 5 are fixedly mounted on the fixed base 1, each offset detection unit 5 including a dial indicator 51 and a sliding seat 52, the dial indicator 51 being slidably mounted on the sliding seat 52. On the movable seat 52, a dial indicator 51 on one of the sliding seats 52 moves along the axial direction of the rotor part fixed by the rotor fixing bracket 3, and dial indicators 51 on the other sliding seats 52 move radially along the rotor part. The working end of the dial indicator 51 passes through the clearance hole 11 provided on the fixed seat 1 and the worktable 2 and fits against the surface of the rotor part. The dial indicator 51 is used to detect the axial and radial offset of the rotor part when it is working. A vibration simulation unit 6 is also provided on the fixed seat 1. The vibration simulation unit 6 is used to drive the worktable 2 and the rotor part fixed by the rotor fixing bracket 3 on the worktable 2 to vibrate.

[0032] The testing equipment described in this application is used to test the rotor of a magnetic pump. The operator mounts the outer magnetic rotor, inner magnetic rotor, and shaft of the rotor onto a rotor mounting bracket 3 on a workbench 2. The rotor mounting bracket 3 fixes the axis of the rotor, keeping it horizontal. A rotary drive 4 is rotatably connected to the rotor via a universal coupling 41 and a coupling. The rotary drive 4 can be a servo motor. The universal coupling 41 ensures that the axis of the rotor is not fixed, thus allowing detection when a deviation occurs during rotation. A deviation detection unit 5 is installed on the mounting base 1. The deviation detection unit 5 generates a value by having the working end of a dial indicator 51 contact the outer wall of the rotor. Therefore, when the rotary drive 4 drives the rotor to rotate, the movement of the working end of the dial indicator 51 is used to detect whether the rotor is rotating horizontally. When rotation occurs, a deflection occurs. The dial indicator 51 is slidably mounted on the sliding seat 52. The dial indicator 51 can slide on the sliding seat 52 so that its working end is in contact with the rotor part, ensuring that the initial value of the dial indicator 51 is negative, and ensuring that the deflection of the rotor part in any direction can be effectively detected. At least one of the dial indicators 51 is mounted on the top of the rotor part. The dial indicator 51 moves on the sliding seat 52 in a direction parallel to the axis of the rotor part, so that the working end of the dial indicator 51 abuts against the top of the rotor part, and detects the deflection in the axial direction when the transfer part is working. The other dial indicators 51 are in contact with the rotor part radially. The multiple dial indicators 51 can separately detect the outer magnetic rotor, the inner magnetic rotor and the circumference of the rotating shaft, improving the accuracy of the detection. This embodiment also includes a vibration simulation unit 6, which can vibrate the workbench 2 and the rotor fixing bracket 3 on the workbench 2 to simulate the bumps in daily use. After the vibration simulation unit 6 vibrates the rotor part, it re-detects the offset of the rotor part during rotation, thereby improving the accuracy of the detection data. The presence of the universal coupling 41 ensures that the transmission connection between the rotary drive 4 and the rotor is stable when the offset detection unit 5 vibrates the rotor fixing bracket 3 and the rotor part fixed by the rotor fixing bracket 3.

[0033] To address the issue of adjusting the distance between the dial indicator 51 and the rotor, the following features were specifically implemented:

[0034] A slide plate 521 is slidably mounted on the sliding seat 52. The slide plate 521 moves along the length of the sliding seat 52. The dial indicator 51 is fixedly connected to the slide plate 521. An adjusting screw 522 is screwed onto the sliding seat 52. One end of the adjusting screw 522 is connected to the slide plate 521. The adjusting screw 522 drives the slide plate 521 and the dial indicator 51 to move.

[0035] In this embodiment, the dial indicator 51 is fixedly installed on the slide plate 521 of the sliding seat 52. The operator can change the position of the slide plate 521 on the sliding seat 52 by rotating the adjusting screw 522 screwed on the bottom of the sliding seat 52, thereby adjusting the value generated after the working end of the dial indicator 51 is in contact with the rotor part, so as to ensure that the value on the dial indicator 51 can reach a uniform starting position for any position of the rotor part.

[0036] To address the issue of adjusting the detection position of the dial indicator 51, the following features were specifically designed:

[0037] The sliding seat 52 is slidably installed in the slide rail 12 provided on the fixed seat 1. The horizontal section of the slide rail 12 extends along the axis of the rotor part, and the vertical section of the slide rail 12 extends in a vertical direction perpendicular to the axis of the rotor part.

[0038] In this embodiment, the sliding seat 52 of the offset detection unit 5 is slidably mounted in the slide rail 12 provided on the fixed seat 1. The horizontal section of the slide rail 12 extends along the axis of the rotor part, which can ensure that the dial indicator 51 used for radial offset detection of the rotor part can move along the axis of the rotor part to adjust the contact position between the working end of the dial indicator 51 and the rotor part. The vertical section of the slide rail 12 extends in a vertical direction perpendicular to the axis of the rotor part, which can ensure that the working end of the dial indicator 51 used for axial offset detection of the rotor part can move radially along the rotor part to adjust the contact position with the rotor part. The position of the sliding seat 52 can be adjusted to ensure that the equipment can perform offset detection on rotor parts of different models and sizes.

[0039] To address the issue of fixing the position of the sliding block 52 on the slide rail 12, the following features were specifically designed:

[0040] The sliding seat 52 has protruding positioning screws 523 on both sides. The positioning screws 523 are inserted into the waist-shaped holes 121 of the slide rail 12. The waist-shaped holes 121 extend along the moving direction of the sliding seat 52. Positioning nuts 524 are screwed on the positioning screws 523. The positioning nuts 524 are used to fix the position of the sliding seat 52 on the slide rail 12.

[0041] In this embodiment, when the sliding seat 52 moves on the slide rail 12, the positioning screw 523 on the sliding seat 52 also moves in the waist-shaped hole 121 of the slide rail 12. After the position of the sliding seat 52 is fixed, the operator can screw the positioning nut 524 on the positioning screw 523 to fix the position of the sliding seat 52 on the slide rail 12, so as to ensure that the detection position of the dial indicator 51 is fixed.

[0042] To address the challenge of fixing the axial position of the rotor section without affecting its rotation, the following features were specifically designed:

[0043] The rotor fixing bracket 3 includes at least one base 31 that is slidably mounted on the worktable 2. The base 31 is provided with a "V"-shaped lower clamping plate 32 and an upper clamping plate 33. The openings of the lower clamping plate 32 and the upper clamping plate 33 are arranged opposite each other, and the lower clamping plate 32 and the upper clamping plate 33 are staggered to clamp the outer wall of the rotor part. The inner wall of the lower clamping plate 32 and the upper clamping plate 33 is equipped with a rotating wheel 321, and the rotation axis of the rotating wheel 321 is parallel to the rotation axis of the rotor part.

[0044] The rotor fixing bracket 3 in this embodiment includes at least one base 31 slidably mounted on the worktable 2. Each base 31 is provided with a lower clamping plate 32 and an upper clamping plate 33 to clamp and fix the rotor part. The base 31 has multiple clamping points that can clamp the rotor part, making the rotor part axis more stable. Both the lower clamping plate 32 and the upper clamping plate 33 have V-shaped openings. When the openings of the lower clamping plate 32 and the upper clamping plate 33 move relative to each other, they can effectively clamp rotor parts of different diameters. The rotating wheel 321 provided on the opposite side of the lower clamping plate 32 and the upper clamping plate 33 fits against the outer wall of the rotor part, ensuring that when the rotary driver 4 drives the rotor part to rotate, the friction between the rotor fixing bracket 3 and the rotor part is rolling friction, ensuring the smoothness of rotor rotation.

[0045] To address the challenge of maintaining the same axial height for rotor sections of different sizes, the following features were specifically designed:

[0046] The base 31 has vertically upward-extending threaded rods 311 on both sides. The threaded rods 311 are screwed into both sides of the lower clamping plate 32. Locking nuts 312 are screwed onto each threaded rod 311. The locking nuts 312 are located on the upper and lower sides of the lower clamping plate 32 to fix the lower clamping plate 32.

[0047] In this embodiment, a threaded rod 311 is provided on the base 31 and inserted into the lower clamping plate 32. The lower clamping plate 32 can move vertically along the axis of the threaded rod 311 to change its own height position and the axial position of the rotor part placed on the lower clamping plate 32, so that when different models of rotor parts are tested, they can all fall within the detection range of the offset detection unit 5. The locking nut 312 on the threaded rod 311 locks the position of the lower clamping plate 32, keeping the axial position of the lower clamping plate 32 and the rotor part placed on the lower clamping plate 32 stable during the test.

[0048] To address the issue of how to prevent the rotor clamping and fixing of the rotor section by the rotor fixing bracket 3 from affecting rotor offset, the following features are specifically designed:

[0049] A guide rod 322 extending vertically upward is provided on the lower clamping plate 32, and a guide hole 331 is provided on the upper clamping plate 33, which is in line with the axis of the guide rod 322. The guide rod 322 is inserted into the guide hole 331. A spring 323 is sleeved on the guide rod 322. The spring 323 elastically connects the lower clamping plate 32 and the upper clamping plate 33. The spring 323 applies a spring force to move the upper clamping plate 33 downward.

[0050] In this embodiment, a vertical guide rod 322 is provided on the lower clamping plate 32, and the upper clamping plate 33 is inserted into the guide rod 322 and elastically connected to the lower clamping plate 32 through a spring 323. The spring 323 applies a spring force to move the upper clamping plate 33 downward, so that the upper clamping plate 33 of the rotor fixing bracket 3 holds the rotor part by the spring force. When the rotary driver 4 drives the rotor part to rotate, the rotor offset can drive the upper clamping plate 33 to stretch the spring 323 to move, thereby ensuring that the offset of the rotor part can be detected by the offset detection unit 5.

[0051] To address the issue of how to prevent the vibration simulation unit 6 from affecting the vibration of the rotor and the position of the dial indicator 51 at the working end of the offset detection unit 5, the following features were specifically designed:

[0052] Several vertically extending guide rods 21 are arranged below the workbench 2. The guide rods 21 are inserted into the guide sleeves 13 arranged at the bottom of the fixed base 1. A first linear actuator 14 is fixedly installed on the guide sleeves 13. The working end of the first linear actuator 14 moves along the axis of the guide rods 21. The vibration simulation unit 6 includes a vibration generator 61 fixedly installed on one side of the fixed base 1. A horizontal vibration connecting plate 62 is fixedly installed on the working end of the vibration generator 61. The first linear actuator 14 drives the workbench 2 to move upward and connect with the vibration connecting plate 62 to vibrate synchronously in the vertical direction.

[0053] The vibration connecting plate 62 is provided with a second linear actuator 621 at both ends. The working end of the second linear actuator 621 moves along the length of the vibration connecting plate 62. The working end of the second linear actuator 621 is provided with an insert rod 622. The worktable 2 is provided with an insert sleeve 22 at both ends. The 622 is inserted into the insert sleeve 22 to connect the vibration connecting plate 62 and the worktable 2.

[0054] In this embodiment, the vibration simulation unit 6 includes a vibration generator 61, which can be a vibration motor or other reciprocating moving structure. A vibration connecting plate 62 is provided on the working end of the vibration generator 61. The vibration generator 61 can drive the vibration connecting plate 62 to vibrate in the vertical direction. When vibration of the rotor part is required, the first linear actuator 14 on the fixed base 1 drives the worktable 2 to move upward, causing the worktable 2 to detach from the fixed base 1 and the rotor part to move away from the working end of the offset detection unit 5. This avoids affecting the working end of the offset detection unit 5 during vibration and also avoids secondary adjustments to the offset detection unit 5. The first linear actuator 14 can be a linear cylinder or an electric push rod, etc. The driver 14 moves the worktable 2 to the designated position. The second linear driver 621 on the vibration connecting plate 62 starts and drives 622 to insert into the insert sleeves 22 on both sides of the worktable 2, so that the worktable 2 is connected to the vibration connecting plate 62. Then the first linear driver 14 is reset, and the vibration generator 61 starts and drives the worktable 2 and the vibration connecting plate 62 to vibrate synchronously. During the subsequent reset of the worktable 2, the guiding effect of the guide rod 21 and the guide sleeve 13 ensures that the worktable 2 returns to its original position. The worktable 2 fits against the upper side of the clearance hole 11, and the rotor part refits with the dial indicator 51 of the offset detection unit 5 for subsequent detection. The second linear driver 621 can be a linear cylinder or an electric push rod, etc.

[0055] To address the issue of preventing vibration of the fixed base 1 during operation of the vibration generator 61, the following features are specifically designed:

[0056] A shock-absorbing pad 15 is provided at the mounting point of the vibration generator 61 and the fixed base 1.

[0057] In this embodiment, a shock-absorbing pad 15 is provided at the bottom of the vibration generator 61. When the vibration generator 61 is started, the shock-absorbing pad 15 filters the vibration of the vibration generator 61, so as to avoid the vibration generator 61 having a large impact on the fixed base 1, thereby affecting the position of the dial indicator 51 and the sliding seat 52 of the offset detection unit 5 installed on the fixed base 1, and ensuring the detection accuracy of the offset detection unit 5 after the rotor part vibrates.

[0058] Working principle: The operator installs the outer magnetic rotor, inner magnetic rotor, and shaft of the rotor part into the rotor fixing bracket 3 on the workbench 2. The rotary drive 4 is rotatably connected to the rotor part through the universal coupling 41 and the coupling. The offset detection unit 5 generates a value by having the working end of the dial indicator 51 attached to the outer wall of the rotor part. Thus, when the rotary drive 4 drives the rotor part to rotate, the movement of the working end of the dial indicator 51 is used to detect whether the rotor part has an offset during rotation. At least one of the dial indicators 51 detects the offset in the axial direction when the transfer part is working, and the other dial indicators 51 are attached to the rotor part radially. Vibration simulation unit... Unit 6 can vibrate the workbench 2 and the rotor fixing bracket 3 on the workbench 2 to simulate the bumps in daily use. When the rotor needs to be vibrated, the first linear driver 14 on the fixing seat 1 drives the workbench 2 to move upward, so that the workbench 2 is separated from the fixing seat 1 and the rotor is away from the working end of the offset detection unit 5. The second linear driver 621 on the vibration connecting plate 62 starts and drives 622 to insert into the insert sleeves 22 on both sides of the workbench 2, so that the workbench 2 is connected to the vibration connecting plate 62 and vibrates synchronously. Then the first linear driver 14 and the workbench 2 are reset, and the offset of the rotor is detected again when it rotates.

[0059] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A device for testing the stability performance of a magnetic pump shaft core, characterized in that, Includes a fixed base (1), a horizontal worktable (2) is provided on the fixed base (1), a rotor fixing bracket (3) is provided on the worktable (2), the rotor fixing bracket (3) is used to stabilize the axis of the rotor part in the horizontal direction, and a rotary driver (4) is also provided on the worktable (2), the rotary driver (4) is connected to the rotor part through a universal coupling (41), and the rotary driver (4) is used to drive the rotor part to rotate; Four offset detection units (5) are fixedly installed on the fixed base (1). The offset detection unit (5) includes a dial indicator (51) and a sliding base (52). The dial indicator (51) is slidably installed on the sliding base (52). The dial indicator (51) on one of the sliding bases (52) moves along the axis of the rotor part fixed by the rotor fixed bracket (3). The dial indicators (51) on the other sliding bases (52) move radially along the rotor part. The working end of the dial indicator (51) passes through the clearance hole (11) provided on the fixed base (1) and the worktable (2) and fits against the surface of the rotor part. The dial indicator (51) is used to detect the axial and radial offset of the rotor part when it is working. A vibration simulation unit (6) is also provided on the fixed base (1). The vibration simulation unit (6) is used to drive the rotor part fixed by the rotor fixing bracket (3) on the workbench (2) to vibrate. Several vertically extending guide rods (21) are provided below the workbench (2). The guide rods (21) are inserted into the guide sleeves (13) provided at the bottom of the fixed base (1). A first linear driver (14) is fixedly installed on the guide sleeves (13). The working end of the first linear driver (14) moves along the axis of the guide rods (21). The vibration simulation unit (6) includes a vibration generator (61) fixedly installed on one side of the fixed base (1). A horizontal vibration connection plate (62) is fixedly installed at the working end of the vibration generator (61). The first linear driver (14) drives the worktable (2) to move upward and connect with the vibration connection plate (62) to vibrate synchronously in the vertical direction.

2. The magnetic pump shaft core stability testing device according to claim 1, characterized in that, A slide plate (521) is slidably mounted on the sliding seat (52). The slide plate (521) moves along the length of the sliding seat (52). The dial indicator (51) is fixedly connected to the slide plate (521). An adjusting screw (522) is screwed onto the sliding seat (52). One end of the adjusting screw (522) is connected to the slide plate (521). The adjusting screw (522) drives the slide plate (521) and the dial indicator (51) to move.

3. The magnetic pump shaft core stability testing device according to claim 2, characterized in that, The sliding seat (52) is slidably installed in the slide rail (12) provided on the fixed seat (1). The horizontal section of the slide rail (12) extends along the axis of the rotor part, and the vertical section of the slide rail (12) extends in the vertical direction perpendicular to the axis of the rotor part.

4. The magnetic pump shaft core stability testing device according to claim 3, characterized in that, The sliding seat (52) has protruding positioning screws (523) on both sides. The positioning screws (523) are inserted into the waist-shaped hole (121) of the slide rail (12). The waist-shaped hole (121) extends along the moving direction of the sliding seat (52). A positioning nut (524) is screwed on the positioning screw (523). The positioning nut (524) is used to fix the position of the sliding seat (52) on the slide rail (12).

5. The magnetic pump shaft core stability testing device according to claim 1, characterized in that, The rotor fixing bracket (3) includes at least one base (31) that is slidably mounted on the workbench (2). The base (31) is provided with a "V"-shaped lower clamping plate (32) and an upper clamping plate (33). The lower clamping plate (32) and the upper clamping plate (33) are arranged with their openings facing each other. The lower clamping plate (32) and the upper clamping plate (33) are arranged alternately to clamp the outer wall of the rotor part. The inner walls of the lower clamping plate (32) and the upper clamping plate (33) are equipped with rotating wheels (321), and the rotation axis of the rotating wheels (321) is parallel to the rotation axis of the rotor part.

6. The magnetic pump shaft core stability testing device according to claim 5, characterized in that, The base (31) has vertically upward threaded rods (311) on both sides. The threaded rods (311) are screwed into both sides of the lower clamping plate (32). Locking nuts (312) are screwed on the threaded rods (311). The locking nuts (312) are located on the upper and lower sides of the lower clamping plate (32) to fix the lower clamping plate (32).

7. The magnetic pump shaft core stability testing device according to claim 5, characterized in that, A guide rod (322) extending vertically upward is provided on the lower clamping plate (32), and a guide hole (331) is provided on the upper clamping plate (33) that is on the same straight line as the axis of the guide rod (322). The guide rod (322) is inserted into the guide hole (331). A spring (323) is fitted on the guide rod (322). The spring (323) elastically connects the lower clamping plate (32) and the upper clamping plate (33). The spring (323) applies a spring force to move the upper clamping plate (33) downward.

8. The magnetic pump shaft core stability testing device according to claim 1, characterized in that, The vibration connecting plate (62) is provided with a second linear actuator (621) at both ends. The working end of the second linear actuator (621) moves along the length direction of the vibration connecting plate (62). A plug rod (622) is provided on the working end of the second linear actuator (621). The workbench (2) has insert sleeves (22) at both ends, and the insert rod (622) is inserted into the insert sleeves (22) to connect the vibration connecting plate (62) and the workbench (2).

9. The magnetic pump shaft core stability testing device according to claim 1, characterized in that, The vibration generator (61) and the mounting base (1) are provided with shock-absorbing pads (15).

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